U.S. patent application number 14/141816 was filed with the patent office on 2014-04-24 for drug-packaging device.
This patent application is currently assigned to PANASONIC HEALTHCARE CO., LTD.. The applicant listed for this patent is PANASONIC HEALTHCARE CO., LTD.. Invention is credited to Hiroshi Hama, Akinori Hatsuno.
Application Number | 20140109528 14/141816 |
Document ID | / |
Family ID | 47424285 |
Filed Date | 2014-04-24 |
United States Patent
Application |
20140109528 |
Kind Code |
A1 |
Hama; Hiroshi ; et
al. |
April 24, 2014 |
DRUG-PACKAGING DEVICE
Abstract
A drug-packaging device is provided that can reduce the number
of steps executed by a worker with suppressing waste of a sheet
which is caused by sheet exchange. A detection sensor for detecting
the connection site between a packaging sheet remaining at a drug
filling unit side and a new package sheet is provided, and drug
filling processing at the connection site is skipped.
Inventors: |
Hama; Hiroshi; (Toon-shi,
JP) ; Hatsuno; Akinori; (Toon-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
PANASONIC HEALTHCARE CO., LTD. |
Toon-shi |
|
JP |
|
|
Assignee: |
PANASONIC HEALTHCARE CO.,
LTD.
Toon-shi
JP
|
Family ID: |
47424285 |
Appl. No.: |
14/141816 |
Filed: |
December 27, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/JP2012/066800 |
Jun 29, 2012 |
|
|
|
14141816 |
|
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Current U.S.
Class: |
53/505 |
Current CPC
Class: |
B65B 1/30 20130101; B65B
57/06 20130101; B65H 45/28 20130101; B65B 57/08 20130101; B65B 9/06
20130101; B65B 41/18 20130101; G07F 11/44 20130101; B65H 2553/412
20130101; B65H 2511/512 20130101; B65H 2801/81 20130101; B65H
2301/5111 20130101; B65H 20/24 20130101; B65H 2301/5151 20130101;
B65H 2301/45 20130101; G07F 17/0092 20130101; B65H 2301/51432
20130101 |
Class at
Publication: |
53/505 |
International
Class: |
B65B 1/30 20060101
B65B001/30 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 30, 2011 |
JP |
2011-146414 |
Claims
1. A drug-packaging device configured to mount a roll sheet
therein, the drug-packaging device comprising: a feeding mechanism
that feeds the roll sheet to a drug filling unit to fill drugs in
the sheet; a detector that detects a connection site between the
roll sheet remaining at the drug filling unit side and a new roll
sheet; and a controller that skips drug filling processing at the
connection site on the basis of a detection result of the
detector.
2. The drug-packaging device according to claim 1, wherein the
controller skips the drug filling processing and subsequent drug
filling processing when the connection site passes over the drug
filling unit.
3. The drug-packaging device according to claim 1, further
comprising a packaging unit that packages the roll sheet at an
indicated size, wherein the controller skips the drug filling
processing at the connection site, and continues packaging based on
the packaging unit to generate a blank package.
4. The drug-packaging device according to claim 3, further
comprising a print unit that prints on the roll sheet, wherein the
controller skips printing on an area corresponding to the blank
package.
5. The drug-packaging device according to claim 3, further
comprising a print unit that prints on the roll sheet, wherein the
roll sheet is printed on an area corresponding to the blank package
by the print unit.
6. The drug-packaging device according to claim 4, wherein the roll
sheet is successively fed through the print unit, the drug filling
unit and the packaging unit in this order, and the detector is
disposed upstream of the print unit.
7. The drug-packaging device according to claim 1, wherein a mark
is provided to a connection portion between the respective sheets,
and the detector detects the presence or absence of the mark.
8. The drug-packaging device according to claim 5, wherein the roll
sheet is printed characters that means the blank package on an area
corresponding to the blank package by the print unit.
Description
TECHNICAL FIELD
[0001] The present invention relates to a drug-packaging device
that is loaded with a rolled sheet and configured to package the
sheet while drugs are filled in the sheet.
BACKGROUND ART
[0002] There is known a drug packaging device that is loaded with a
rolled sheet and configured to package the sheet while drugs are
filled in the sheet. When the loaded sheet is used up, this device
needs a work of exchanging a new sheet.
[0003] The drug packaging device has a long and complicated feeding
path because filling of drugs, packaging, etc. are performed in a
limited space. Therefore, a work of removing all the loaded sheet
remaining on the feeding path and perfectly setting a new sheet
when the loaded sheet is exchanged by the new sheet is troublesome.
In order to simplify this sheet exchange work, a method of
connecting an end portion of the sheet remaining in the device and
an end portion of the new sheet has been proposed, and a method of
manually connecting both the end portions with a double-sided
adhesive tape or a structure having a construction of positioning
both the sheets, setting an adhesive tape on a center stage
provided between the sheets and connecting both the sheets by this
adhesive tape have been proposed (see Patent Documents 1 and 2, for
example).
PRIOR ART DOCUMENTS
Patent Document
[0004] Patent Document 1: JP-A-2010-23999 [0005] Patent Document 2:
JP-A-2001-72003
SUMMARY OF THE INVENTION
[0006] Filling of drugs is difficult at the connection site between
both the sheets. Therefore, a conventional device is provided with
a FEED button for feeding sheets, and a user is required to operate
the FEED button until the connection site between both the sheets
has passed over a drug filling position.
[0007] However, an unused sheet is wasted by the amount
corresponding to this feeding amount of the sheet, resulting in
waste of the resources. Furthermore, the user must perform the
operation of feeding the sheet by a predetermined amount, which
induces a working load.
[0008] The present invention has been implemented in view of the
foregoing situation, and has an object to provide a drug-packaging
device that can reduce the number of steps to be executed by a
worker with suppressing waste of a sheet which is caused by
exchange of the sheet.
[0009] This specification contains all the content of Japanese
Patent Application No. 2011-146414 filed on Jun. 30, 2011 in
Japanese Patent Office.
[0010] According to the present invention, a drug-packaging device
having a roll type sheet mounted therein and a feeding mechanism
for feeding the sheet to a drug filling unit to fill drugs in the
sheet is characterized by comprising: a detector that detects a
connection site between a sheet remaining at the drug filling unit
side and a new sheet; and a controller that skips drug filling
processing at the connection site on the basis of a detection
result of the detector.
[0011] In the above construction, the controller may skip the drug
filling processing when the connection site passes over the drug
filling unit, and next drug filling processing.
[0012] Furthermore, in the above construction, a packaging unit
that packages the sheet at an indicated size may be provided, and
the controller may skip the drug filling processing at the
connection site, and continue packaging based on the packaging unit
to generate a blank package.
[0013] In the above construction, a print unit that prints the
sheet may be provided, and the controller may skip printing on an
area corresponding to the blank package.
[0014] In the above construction, a print unit that prints the
sheet may be provided, and it may be printed on an area
corresponding to the blank package by the controller that the area
is a blank package.
[0015] In the above construction, the sheet may be successively fed
through the print unit, the drug filling unit and the packaging
unit in this order, and the detector may be disposed upstream of
the print unit.
[0016] In the above construction, a mark may be provided to a
connection portion between the respective sheets, and the detector
may detect the presence or absence of the mark.
[0017] According to the present invention, the detector can be
provided for detecting the connection site between the sheet
remaining at the drug filling unit side and the new sheet, and the
controller for skipping the drug filling processing at the
connection site on the basis of the detection result of the
detector. Therefore, the worker's operation of feeding the
packaging sheet can be eliminated, and the number of steps to be
executed by the worker can be reduced with suppressing waste of
sheets caused by sheet exchange.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 is a perspective view showing a drug packaging device
according to an embodiment of the present invention;
[0019] FIG. 2 is a diagram showing the internal structure of the
drug packaging device;
[0020] FIG. 3 is a perspective view showing a packaging unit when
the packaging unit is viewed obliquely from a front upper right
side;
[0021] FIG. 4 is a perspective view showing the drug packaging
device when the drug packaging device is viewed obliquely from a
front upper left side;
[0022] FIG. 5 is a block diagram showing the functional
construction of the drug packaging device;
[0023] FIG. 6 is a diagram showing the peripheral construction of a
working plate;
[0024] FIGS. 7A to 7D are diagrams showing a connecting work of
packaging sheets which accompanies exchange of a roll sheet;
[0025] FIGS. 8A to 8C are side views of a temporarily fixing work
of the packaging sheets;
[0026] FIG. 9 schematically shows the construction of a detection
sensor;
[0027] FIG. 10 is a flowchart showing connection site skip
processing;
[0028] FIG. 11 schematically shows a packaging sheet in a time
series manner; and
[0029] FIG. 12 is a perspective view showing a packaging unit
according to a modification.
DETAILED DESCRIPTION
[0030] An embodiment of the present invention will be hereunder
described with reference to the drawings.
[0031] FIG. 1 is a perspective view showing a drug packaging device
1 according to an embodiment of the present invention, and FIG. 2
shows the internal construction of the drug packaging device. In
FIG. 1, the front surface (front side) of the drug packaging device
1 is represented by reference character FR, the back surface
thereof is represented by reference character BK, the right surface
thereof is represented by reference character RP and the left
surface is represented by reference character LP.
[0032] The drug packaging device 1 is disposed in a hospital or a
dispensing pharmacy. All the steps from extraction of tablets till
packaging, in which drugs (tablets, capsules or the like) of kinds
and numbers described on a prescription are discharged from tablet
cases 6 one by one, passed through a chute 15 (see FIG. 2) serving
as a passage for naturally dropping the drugs by using the weight
of the drugs, collected at one place by a hopper 17 (see FIG. 2)
and then packaged in a packaging sheet (sheet) S, are automated and
performed in a series of mechanisms.
[0033] As shown in FIG. 1, the drug packaging device 1 has a
vertically long rectangular main body (housing) 2, and a personal
computer 101 described later for controlling the drug packaging
device 1. The main body 2 has an upper structure 3 and a lower
structure 4 which are mutually separable from each other, and
configured so that the upper structure 3 is joined onto the lower
structure 4. The upper structure 3 functions as a drug
accommodating unit for accommodating plural tablet cases in which
drugs are put, and the upper surface thereof is covered by a
detachable top plate 3A.
[0034] The upper structure 3 is provided with plural shelves 5
constituting multi-column and multi-stage drawers of four columns
in the right-and-left direction and four stages in the up-and-down
direction (totally sixteen drawers), and each shelf 5 is configured
to be drawable to the front side of the drug packaging device 1. A
door panel 11 is secured to the front end (front surface) of each
shelf 5, and the respective door panels 11 block the opening of the
front surface of the upper structure 3 under the state that all the
shelves 5 are accommodated in the upper structure 3.
[0035] Driving bases 12 in which plural tablet cases 6 can be
arranged on two rows in the right-and-left direction, and a passage
13 which is vertically opened between the tablet cases 6 on the two
rows in the right-and-left direction are provided in each shelf 5
so as to extend in the depth direction. The passages 13 constitute
chutes 15 for downwardly dropping drugs discharged from the tablet
cases 6 of the shelves 5 arranged in the up-and-down direction. In
this embodiment, the chutes 15 of four columns in the
right-and-left direction are formed.
[0036] The front surface and the upper surface of the lower
structure 4 are opened. The lower structure 4 intercommunicates
with the upper structure 3 at the upper surface thereof. As shown
in FIG. 2, a pair of right and left shutters 16, 16 provided below
the chutes 15, a single hopper 17 provided below the shutters 16,
16, a packaging unit 18 provided below the hopper 17, etc. are
accommodated and mounted in the lower structure 4. The opening of
the front surface of the lower structure 4 is configured to be
freely openable and closable by double door type front doors 8, 8
(see FIG. 1).
[0037] A take-out port 21 is formed in the front door 8 at the left
side of the front surface. The take-out port 21 is provided to take
out a package filled with predetermined kinds and numbers of drugs,
and packages filled with drugs are discharged to the take-out port
21.
[0038] As shown in FIG. 2, the right and left shutters 16, 16 have
a rectangular funnel shape which has a broadly opened upper surface
and is tapered to the lower end thereof. They are opened and closed
by shutter solenoids 123 described later, and temporarily receive
drugs dropping from the respective chutes 15 to the hopper 17. An
additional drug feeder (UTC) 23 is provided between the shutters
16, 16 so as to be freely drawn to the front side. The additional
drug feeder 23 is a feeder for arbitrarily supplying drugs to be
added, and it intercommunicates with the inside of the hopper
17.
[0039] The hopper 17 has a rectangular funnel shape which has a
broadly opened upper surface and is tapered to the lower end
thereof. The hopper 17 receives drugs dropping from the respective
chutes 15 and the additional drug feeder 23, and supplies the drugs
to a nozzle 44 below the hopper 17.
[0040] The packaging unit 18 is detachably screwed to a pair of
right and left drawing rails 31, 31 which are secured to the right
and left side of the bottom surface of the lower structure 4.
Accordingly, the packaging unit 18 is allowed to be freely drawn
from the inside of the lower structure 4 to the front side thereof
under the state that the front doors 8, 8 are opened. Furthermore,
the packaging unit 18 is attachable and detachable to and from the
drawing rails 31, 31 under the drawn state.
[0041] FIG. 3 is a perspective view of the packaging unit 18 when
the packaging unit 18 is viewed obliquely from the front upper
right side, and FIG. 4 is a perspective view showing the drug
packaging device 1 when the drug packaging device 1 is viewed
obliquely from the front upper left side. In FIG. 3, an arrow
represented by reference character F represents the drawing
direction of the packaging unit 18 when the packaging unit 18 is
drawn to the front surface side of the drug packaging device 1, and
reference numeral 19 represents a grip used to draw the packaging
unit 18.
[0042] As shown in FIGS. 3 and 4, the packaging unit 18 has a sheet
supply board 42 on which a roll 41 having a thermally-sealable
rolled packaging sheet S is detachably mounted, a printer unit 43
functioning as a print unit for printing characters and figures
such as barcodes, etc. on the packaging sheet S, a nozzle 44
functioning as a drug filling unit for filling drugs in the
packaging sheets, a thermal seal head 45 functioning as a packaging
unit for closing the packaging sheet S filled with drugs by thermal
sealing, a feeding roller 46 constituting a feeding mechanism for
feeding the packaging sheet S drawn out from the roll 41, a cutter
47 for cutting the packaging sheet S, and a conveyor unit 48 for
feeding the packaging sheet S having drugs packaged therein
(package) to the take-out port 21. The sheet supply board 42, the
printer unit 43, the nozzle 44, the thermal seal head 45, the
feeding roller 46, the cutter 47 and the conveyor unit 48 are
successively arranged from the upstream side in this order along
the feeding passage of the packaging sheet S. FIG. 4 shows a state
that the roll 41 is removed from the sheet supply board 42.
[0043] The packaging unit 18 has a box body 51 standing upwards
from the center of the bottom surface in the right-and-left
direction in the lower structure 4. Parts (a driving motor for the
thermal seal head 45, a driving mechanism for a movable roller 54
described later, etc.) which are not visually exposed to the
outside of the packaging unit 18 are arranged in the box body 51,
and members which are visually exposed to the outside of the
packaging unit 18 are arranged by using spaces at the right, left,
upper and back sides.
[0044] More specifically, at the left side of the box body 51 are
arranged the sheet supply board 42, a first feeding roller 53 for
first guiding the packaging sheet S drawn obliquely from the roll
41 of the sheet supply board 42 to the upper right side and folding
the packaging sheet S downwards, a movable roller 54 for applying
tension to the packaging sheet S downstream of the first feeding
roller 53, and a second feeding roller 55 for guiding the packaging
sheet S downstream of the movable roller 54 and folding the
packaging sheet S so that the packaging sheet S directs to the
entrance of the printer unit 43 as shown in FIG. 4. A feeding
passage for feeding the packaging sheet S to the printer unit 43
while applying tension to the packaging sheet S is constructed by
the above members.
[0045] The first feeding roller 53 is fixed at a higher position
than the roll 41 mounted on the sheet supply board 42. Therefore,
when the roll 41 is exchanged, the packaging sheet S drawn out from
the roll 41 can be easily wound by a worker (user). Furthermore,
the rotational shafts of the first feeding roller 53, the movable
roller 54 and the roll 41 mounted on the sheet supply board 42 are
parallel to one another, and extend obliquely to the upper left
side in an oblique direction which is near to a substantially
horizontal direction. On the other hand, the rotational shaft of
the second feeding roller 55 is not parallel to the above
rotational shafts. The rotational shafts of the first feeding
roller 53, the movable roller 54 and the roll 41 mounted on the
sheet supply board 42 may be properly changed insofar as they are
parallel to one another and can be arranged in the space at the
left side of the box body 51, and the second feeding roller 55 may
be also positionally properly changed.
[0046] As shown in FIG. 3, the upper surface of the box body 51 is
formed as a sloped surface which is sloped to the lower right side.
The printer unit 43 is disposed on the upper surface of the box
body 51, and the packaging sheet S is passed through the printer
unit 43, and fed to the lower right side. The lower end of the
nozzle 44, the thermal seal head 45, the feeding roller 46 and the
cutter 47 are successively arranged in this order at the lower
right side of the printer unit 43, and the upstream end 48A of the
conveyor unit 48 is located at the right side of the cutter 47. The
conveyor unit 48 extends obliquely to the upper left side behind
the box body 51, and then it bends and extends forwards at the rear
left side of the box body 51. The conveyor unit 48 is provided with
a rear end 48B at a position where the conveyor unit 48
intercommunicates with the take-out port 21 of the front door 8
(see FIG. 1).
[0047] Next, the basic operation of the drug packaging device 1
will be described.
[0048] The roll 41 is obtained by rolling an elongated packaging
sheet S while the packaging sheet S is beforehand doubled (folded
in half), and the roll 41 is mounted on the sheet supply board 42
while the axis of the roll 41 is tilted to the lower right side
with respect to the horizontal plane (see FIG. 2). The packaging
sheet S is fed by the feeding roller 46, whereby the packaging
sheet S is successively passed through the first feeding roller 53,
the movable roller 54 and the second feeding roller 55 in this
order and then fed to the printer unit 43. The surface of the
packaging sheet S is printed by the printer unit 43, and numerals
are printed in ascending order like 0, 1, 2, 3, etc. in this
embodiment.
[0049] Subsequently, the doubled packaging sheet S is spread at the
open side thereof so that the cross-sectional shape thereof is
V-shaped, filled with drugs discharged from the nozzle 44 through
the open side, pinched from both the sides thereof and thermally
sealed by the thermal seal head 45, and then packaged at a
predetermined package size while the packaging sheet S is
compartmented every package. Thereafter, the packaging sheet S is
cut into proper lengths with the cutter 47, and fed and discharged
to the take-out port 21 by the conveyor unit 48 (see FIG. 1),
whereby packages filled with desired kinds and numbers of drugs are
created one by one.
[0050] FIG. 5 is a block diagram showing the functional
construction of the drug packaging device 1.
[0051] A controller 120 centrally controls the respective parts of
the drug packaging device 1, and has CPU (Central Processing Unit)
as operation executing means, ROM (Read Only Memory) in which a
basic control program executed by CPU, data associated with the
basic control program, etc. are stored in a non-volatile fashion,
RAM (Random Access Memory) in which programs executed by CPU, data
associated with the programs, etc. are temporarily stored, other
peripheral circuits, etc. The controller 120 executes various kinds
of time counting operations and time counting of the present time
on the basis of reference clocks generated by an oscillator (not
shown).
[0052] The controller 120 is connected to the packaging unit 18, an
interface unit 121, a drug detection sensor 122, the shutter
solenoid 123, a motor driver 124, a display unit 125, an input unit
126 and a storage unit 127.
[0053] Under the control of the controller 120, the packaging unit
18 creates packages filled with predetermined drugs, and feeds the
created packages to the take-out port 21 by the conveyor unit
48.
[0054] The interface unit 121 is connected to a personal computer
101 through a signal communication cable or the like, and
receives/transmits various kinds of signals from/to the personal
computer 101 under the control of the controller 120. This
construction enables the personal computer 101 and the drug
packaging device 1 to receive and transmit various kinds of data
therebetween, and also enables a worker (user) to execute various
instructions to the drug packaging device 1 through the personal
computer 101.
[0055] The drug detection sensor 122 detects drugs discharged from
the tablet cases 6, and outputs a detection value to the controller
120. The controller 120 counts the number of drugs discharged from
the tablet cases 6 on the basis of the detection value input from
the drug detection sensor 122. The shutter solenoid 123 operates
the shutters 16, 16 under the control of the controller 120. The
motor driver 124 is connected to various kinds of motors equipped
to the packaging unit 18, and supplies driving current to these
motors to control the operation of the motors under the control of
the controller 120.
[0056] The display unit 125 displays various kinds of information
under the control of the controller 120. The input unit 126 accepts
a worker's input operation, and outputs it to the controller 120.
The storage unit 127 is constructed by EEPROM or a flash memory,
and stores various kinds of data in a rewritable fashion under the
control of the controller 120. In the storage unit 127 are stored a
control program 127A executed by the controller 120, etc.
[0057] In this embodiment, when the roll 41 is exchanged, there is
performed a work of drawing the packaging unit 18 to the front side
through the drawing rails 31, 31 and connecting a packaging sheet S
remaining at the packaging unit 18 side and a packaging sheet Sofa
new roll 41 through a tape. The method of performing this
connection work does not need to completely remove a used packaging
sheet S and set a new packaging sheet Son the complicated feeding
passage, and also has an advantage that the used packaging sheet S
can be used at the maximum level to avoid waste of resources.
However, the connection work itself is liable to be cumbersome.
[0058] Therefore, this embodiment is provided with a working plate
151 serving as a working table on which the connection work is
performed.
[0059] <Concerning the Working Plate>
[0060] As shown in FIG. 3, the working plate 151 is located to be
exposed to the front side when the front doors 8, 8 of the lower
structure 4 are opened. More specifically, the packaging unit 18 is
provided with a partitioning plate 57 through which the upper side
of the box body 51 is partitioned into the right and left parts,
and the working plate 151 is secured at the upper and front side of
the partition plate 57. The roller group 53 to 55 located on the
upstream side of the printer unit 43 and the printer unit 43 are
separated from each other through the partition plate 57.
[0061] FIG. 6 shows the working plate 151 together with the
peripheral construction thereof.
[0062] As shown in FIG. 6, the working plate 151 has one
rectangular flat plate type metal plate, and one end corner portion
thereof is secured to the partition plate 57 through a stay 152 by
a fastening member (a bolt and a nut in this embodiment) 35. The
working plate 151 is freely pivotally swingable around the
fastening member 35 in an X direction of FIG. 6, and it can be
tilted to the front side (the front surface side of the drug
packaging device 1) and the back side (the back surface side of the
drug packaging device 1).
[0063] The fastening member 35 is parallel to the shaft of the
first feeding roller 53 which first guides the packaging sheet S
drawn out from the roll 41. When the working plate 151 is tilted to
the front side, the working plate 151 can be set along a flat plane
M1 (see FIG. 4) which extends from the shaft of the first feeding
roller 53 orthogonally to the front side (front surface side).
[0064] Furthermore, by tilting the working plate 151 to the back
side (the back surface side of the drug packaging device 1), the
back surface of the working plate 151 can be exposed to the front
side or upper side.
[0065] A center line LC (see FIG. 6) representing the center
between the front side and the back side is provided to both the
surfaces of the working plate 151. A pair of upper and lower clips
CL1 are provided at the back side of the center line LC, and a pair
of upper and lower clips CL2 are provided at the front side of the
center line LC. These clips CL1 and CL2 are pivotally swingable in
a Y-direction along the surface of the working plate 151 around the
respective fastening members (bolts and nuts in this embodiment) 36
for fastening the respective clips to the working plate 151. The
center line LC is provided by attaching a plastic tape having a
conspicuous color such as a fluorescent color or the like or
printing it.
[0066] FIGS. 7(A) to (D) show the connection work of packaging
sheets S which exchange of rolls involves.
[0067] When the worker connects the packaging sheets S, the rear
end portion SA of a residual packaging sheet S (represented by a
two-dotted chain line in FIGS. 7A to 7D) of a used roll 41 is
disposed in a first portion AR1 as a back side area of the center
line LC of the working plate 151 while the clips CL1 are evacuated
(FIG. 7A), and then the clips L1 are returned, whereby the rear end
portion SA of the packaging sheet S can be temporarily fixed (FIG.
7B).
[0068] Here, FIGS. 8A to 8C are side views showing the temporarily
fixing work of the packaging sheet S. As shown in FIGS. 8A to 8C,
when the packaging sheet S is temporarily fixed, the rear end
portion SA of the doubled packaging sheet S is spread to be
V-shaped in section (FIG. 8A), and the folded portion SK as the
apex is brought into contact with one side portion 151K of the
working plate 151 (FIG. 8B). Under the above state, the rear end
portion SA is clipped from the upper and lower sides by the pair of
upper and lower clips CL1 (FIG. 8C). Since the packaging sheet S is
temporarily fixed while the folded portion SK of the packaging
sheet S is brought into contact with the one side portion 151K of
the working plate 151 as described above, the packaging sheet S can
be accurately positioned at the same position every time.
[0069] As shown in FIG. 8C, the respective tips of the clips CL1
swell to the working plate 151, so that the packaging sheet S can
be pressed by these tips.
[0070] When the temporarily fixing work of the residual packaging
sheet S of the used roll 41 is finished, the front end portion SB
(represented by a two-dotted chain line in FIGS. 7A to 7D) of a
packaging sheet S of a new roll 41 is disposed in a second portion
AR2 as a front side area of the center line LC of the working plate
151 while the clips CL2 are evacuated as shown in FIG. 7C, and then
the clips CL2 are returned, whereby the front end portion SB of the
packaging sheet S can be temporarily fixed (FIG. 7D). In this case,
as shown in FIGS. 8A to 8C, the packaging sheet S is temporarily
fixed while the folded portion SK of the packaging sheet S is
brought into contact with one side portion 151K of the working
plate 151, whereby the packaging sheet S can be accurately
positioned at the same position every time. Accordingly, the rear
end portion SA of the packaging sheet S before the exchange and the
front end portion SB of the packaging sheet S after the exchange
can be easily aligned with each other on a straight line.
[0071] Subsequently, the end portion SB (or SA) of one of the
packaging sheets S is covered on the end portion SA (or SB) of the
other packaging sheet S on the center line LC while the center line
LC is set as a mark, and both the packaging sheets are connected to
each other by using a double-sided adhesive type connection tape
(double-sided adhesive tape) or a one-sided adhesive type
connection tape (one-sided adhesive tape). When this connection
work or the temporarily fixing work is performed, the working plate
151 is properly swung to check the back surface of the packaging
sheet S, whereby it can be easily checked whether both the doubled
packaging sheets S are set under a proper state.
[0072] In this case, if the front end portion SB of the packaging
sheet S of the new roll 41 to be subsequently temporarily fixed is
covered, from outside, on the rear end portion SA of the packaging
sheet S of the used roll 41 to be previously temporarily fixed, the
superposing work can be smoothly performed. In addition, the front
end portion SB of the packaging sheet S of the new roll 41 is not
exposed to the inside of the doubled packaging sheet. Therefore,
there is an advantage that the connection site does not obstruct
the spreading work of the doubled packaging sheet S in the
neighborhood of the nozzle 44, etc.
[0073] The present invention is not limited to the above style, and
conversely, the front end portion SB of the packaging sheet S of
the new roll 41 may be put in the rear end portion SA of the
packaging sheet S of the used roll 41. In this case, the front end
portion SB of the packaging sheet S of the new roll 41 is not
exposed to the outside of the doubled packaging sheet. Therefore,
the connection site does not obstruct the feeding work of the
feeding roller 46, etc.
[0074] In the construction that the roll 41 is exchangeably
mounted, the packaging sheet S wound around the roll 41 is fed
under tension and filled with drugs, etc. as in the case of this
embodiment, the feeding passage of the packaging sheet S is liable
to be long and complicated. However, under this construction, this
embodiment is provided with the working plate 151 having the first
portion AR1 for temporarily fixing the end portion SA of the
packaging sheet remaining at the nozzle (drug filling portion) 44
side and the second portion AR2 for temporarily fixing the end
portion SB of the new packaging sheet S, and the end portions SA
and SB of the respective packaging sheets S which are temporarily
fixed to the first portion AR1 and the second portion AR2 are
connectable to each other. Therefore, a worker can easily perform
the connection work of both the packaging sheets S.
[0075] Furthermore, the first portion AR1 and the second portion
AR2 are formed in one plate. Therefore, the work can be easily
performed, and the construction is simple. Furthermore, the working
plate 151 is located so as to be exposed to the front side when the
front doors 8, 8 of the lower structure 4 are opened, which also
facilitates the connection work of the packaging sheets.
[0076] In addition, as shown in FIG. 4, the working plate 151 of
this embodiment is along the flat plane M1 extending in an
orthogonal direction from the shaft of the first feeding roller 53
for feeding the packaging sheet S. Therefore, the rear end portion
SA of the pre-exchange packaging sheet S can be easily directly
moved to the first portion AR1 of the working plate 151 without
removing the rear end portion SA from the first feeding roller 53,
and the temporarily fixing work of an existing packaging sheet S
can be easily performed.
[0077] Furthermore, the first feeding roller 53 is a feeding roller
provided on the most upstream side of the feeding passage.
Therefore, it is located on the upstream side of the movable roller
54 for applying tension to the packaging sheet S, etc. Therefore,
the connection work of the packaging sheet S can be performed
without removing the packaging sheet S from the feeding rollers 53
to 54 containing the movable roller 54, and a work of re-hanging
the packaging sheet S is unnecessary.
[0078] Furthermore, since the working plate 151 is provided at a
position where it is exposed to the front side when the front doors
8, 8 of the lower structure 4 are opened, the connection work of
the packaging sheet S can be easily performed. The working plate
151 is provided to be freely swingable so that the obverse and
reverse surfaces thereof can be exposed to the front side.
Therefore, the posture of the working plate 151 can be adjusted so
that the packaging sheet S can be easily temporarily fixed, and the
connection work can be more easily performed. Accordingly, the
connection work of the doubled rolled packaging sheet S can be
easily performed.
[0079] In addition, in this embodiment, the end portions SA, SB of
the respective packaging sheets S can be connected to each other
under the state that the packaging unit 18 is disposed in the lower
structure 4. That is, as shown in FIG. 2 and FIG. 4, the sheet
supply board 42 is disposed at the front lower side of the working
plate 151 which is disposed at the front upper side. Therefore, the
work can remove a pre-exchange roll 41 from the sheet supply board
42, attach a new roll 41, temporarily fix the end portion SA of the
packaging sheet S at the pre-exchange roll 41 side to the working
plate 151, temporarily fix the end portion SB of the packaging
sheet S of the new roll 41 to the working plate 151, and connect
both the packaging sheets S without drawing the packaging unit 18
from the inside of the lower structure 4 to the front side thereof.
Accordingly, even when the working space at the front side of the
drug packaging device 1 is narrow, the above work can be
performed.
[0080] It is needless to say that the above work can be performed
under the state that the packaging unit 18 is drawn from the lower
structure 4 to the front side thereof.
[0081] In general, it is required to avoid a situation that drugs
are filled to the connection site after the packaging sheets S are
connected to each other as described above. In this case, if a FEED
button or the like for feeding a packaging sheet is provided and
the worker is required to operate the FEED button until the
connection site has passed over the drug filling position, this
work would be cumbersome, and this is not preferable.
[0082] Therefore, in this embodiment, a detection sensor (detector)
161 (see FIG. 5) for detecting the connection site of the packaging
sheets S is provided, and connection site skipping processing of
skipping drug filling processing, etc. so that drugs are not filled
to the connection site is executed on the basis of the detection
result of the detection sensor 161.
[0083] <Detection Sensor>
[0084] FIG. 9 is a diagram showing the construction of the
detection sensor 161.
[0085] The detection sensor 161 is constructed by a transmission
type optical sensor, and has a light emitting unit 162 for emitting
inspection light to a packaging sheet S as a detection target, and
a light receiving unit 163 for receiving the inspection light
transmitted through the packaging sheet S. The connection site of
the packaging sheet S is detected by detecting the difference in
transmission light amount which is different between the connection
site of the packaging sheet S and the other place.
[0086] Furthermore, the detection sensor 161 detects the
transmission light amount in the neighborhood of the folded portion
SK of the packaging sheet S. The transmission light amount in the
neighborhood of the folded portion SK is detected because the
presence or absence of a connection tape can be surely detected by
adhesively attaching the connection tape so that the connection
tape straddles over the folded portion SK when the packaging sheets
S are connected to each other by using the working plate 151.
Furthermore, a marking tape different from the connection tape (a
tape represented by reference character TM in FIG. 11 described
later) may be attached to the folded portion SK and detected. Since
the folded portion SK is located at the open side (one side portion
151K side) of the working plate 151, the work of attaching the tape
to the folded portion SK is easily performed.
[0087] The detection sensor 161 is located on the upstream side of
the nozzle 44 for filling drugs, and more specifically, it is
disposed between the printer unit 43 and the roller group 53 to 55
located upstream of the printer unit 43.
[0088] FIG. 10 is a flowchart showing the connection site skip
processing, and FIGS. 11(A) to (F) are time-series diagrams of the
packaging sheet S. The connection site skip processing is performed
by executing a control program 127A through the controller 120.
[0089] As shown in FIG. 10, at a predetermined period (a period of
5 ms in this embodiment), the controller 120 detects on the basis
of the detection sensor 161 whether there is a connection site of
the packaging sheet S or not. When the connection site of the
packaging sheet S is detected (step S11), the controller 120
executes skip position count-down processing (step S13) until the
connection site reaches a skip position (step S12: NO).
[0090] The skip position count-down processing is the processing of
counting the time from the detection of the connection site of the
packaging sheet S until arrival of the connection site at the
printer head as a skip start position. In this embodiment, the time
concerned corresponds to the drug preparation time of one package,
and it is determined whether drug preparation for one package is
performed or not. When drug preparation for one package is
performed, the controller 120 determines the skip position (step
S12: YES), and starts skip processing of skipping predetermined
processing containing drug filling processing (step S14).
[0091] In this skip processing, the controller 120 interrupts the
print processing based on the printer unit 43 and the drug filling
processing based on the nozzle 44 and continues the packaging
processing based on the thermal seal head 45 and the feeding
processing based on the conveyor 48 out of the processing involved
by the drug preparation.
[0092] As described above, when the packaging processing and the
feeding processing are executed without executing the drug filling
processing, an empty package, that is, a blank package is
generated. The controller 120 executes the skip processing to
generate a blank package. Furthermore, the controller 120 counts
the frequency of the skip processing, finishes the skip processing
when the count value reaches a preset frequency (2 in this
embodiment) (step S15: YES), and shifts to the drug preparation
start processing. In this drug preparation start processing, the
print processing and the drug filling processing which are being
interrupted are resumed, and all the processing involved by the
drug preparation (the print processing, the drug filling
processing, the packaging processing, the feeding processing, etc.)
can be executed.
[0093] In FIG. 11, the connection site of the packaging sheet S is
represented by reference character CN, packages which are filled
with drugs without being skipped are represented by reference
character IN, and packages which are skipped and thus filled with
no drug are represented by reference character NOT. As shown in
FIG. 11, in this embodiment, a blank package is formed at a
connection site CN, another blank package is also formed so as to
be continuous with the connection site CN on the downstream side of
the connection site concerned. The area corresponding to these two
blank packages is not printed. Therefore, the packaging sheet S is
also thermally sealed at the connection site CN portion as in the
case of the other portions, and thus the connection site CN can be
fed under the same condition by the feeding roller 46 and the
conveyor 48. Furthermore, the area corresponding to a blank package
is not printed, and thus "no print" enables the area to be
externally visually recognized as being a blank package.
[0094] As described above, this embodiment is provided with the
detection sensor (detector) 161 for detecting the connection site
CN between the packaging sheet S remaining at the nozzle (drug
filling unit) 44 side and the new packaging sheet S, and the
controller 120 skips the processing of filling drugs to the
connection site CN on the basis of the detection result of the
detection sensor 161. Therefore, as compared with the conventional
construction that a worker must operate the FEED button for feeding
the packaging sheet, this embodiment can eliminate this type of
operation, and the number of steps to be executed by the worker can
be reduced with reducing waste of the sheet which is caused by
sheet exchange.
[0095] Furthermore, the controller 120 skips the drug filling
processing over plural times (twice in this embodiment) when the
connection site CN passes over the nozzle 44. Therefore, the
situation that drugs are filled into an area containing a
connection site CN can be surely prevented.
[0096] In this embodiment, the skip frequency is set to twice.
However, it may be three or more times. Furthermore, from the
viewpoint that the area containing the connection site CN is surely
prevented from being filled with drugs, it is preferable to
increase the skip frequency as the package bag size is smaller. In
this case, the skip frequency may be automatically changed in
accordance with the set package bag size. When the package bag size
is large and the area containing the connection site CN can be
surely avoided from being filled with drugs by only one skip, the
skip frequency may be set to once.
[0097] Furthermore, in this embodiment, the controller 120
continues packaging based on the thermal seal head 45 to generate
blank packages whereas the drug filling processing is skipped at
the connection site CN. Therefore, the packaging sheet S can be
closed at even the connection site CN, and the packaging sheet can
be surely and easily fed.
[0098] Furthermore, the controller 120 can skip the print
processing based on the printer unit 43 at the connection site CN
so that the area corresponding to a blank package is not printed.
Therefore, "no print" on a package makes it easy to externally
recognize that the package is a blank package, and a situation that
a blank package is misidentified as being filled with drugs can be
avoided. Furthermore, the detection sensor 161 is provided upstream
of the printer unit 43 which is provided upstream of the packaging
sheet S. Therefore, the connection site CN can be surely detected
before the print processing, the drug filling processing and the
packaging processing are executed.
[0099] Furthermore, in this embodiment, the marking tape TM (see
FIG. 11) serving as a mark is provided to the connection site CN of
the packaging sheet S, and the detection sensor 161 detects the
presence or absence of the marking tape TM. Therefore, the
connection site CN of the packaging sheet S can be surely
detected.
[0100] The above-described embodiment is merely an embodiment of
the present invention, and any modification and application can be
made without departing from the subject matter of the present
invention. For example, in the above embodiment, the working plate
151 is provided to the partition plate 57. However, the present
invention is not limited to this style, and the position and
installation method of the working plate 151 are properly
alterable. For example, as shown in FIG. 12, the working plate 151
may be provided in the neighborhood of the first feeding roller 53.
Even in the construction shown in FIG. 12, the working plate 151 is
provided at the position where it is exposed to the front side when
the front doors 8, 8 of the lower structure 4 are opened, and it is
provided freely swingably, whereby the working plate 151 can be
oriented along the flat plane extending in the orthogonal direction
from the shaft of the first feeding roller 53, and the connection
work of the packaging sheet S can be facilitated.
[0101] Still furthermore, in the above embodiment, the working
plate 151 is set along the flat plane M1 extending in the
orthogonal direction from the shaft of the first feeding roller 53,
whereby the temporarily fixing work of the packaging sheet S can be
facilitated (see FIG. 4). However, the present invention is not
limited to this style. For example, the temporarily fixing work of
the packaging sheet S can be also facilitated by setting the
working plate 151 along a flat plane extending in the orthogonal
direction from the rotating shaft of the roll 41 mounted on the
sheet supply board 42. Furthermore, the temporarily fixing work of
the packaging sheet S can be also facilitated by setting the
working plate 151 along the flat plane M1 as well as the above flat
plane. That is, in the present invention, the working plate 151 may
be set along the flat plane extending in the orthogonal direction
from at least any one of the shaft of any feeding roller and the
rotating shaft of the roll 41 within the range that the temporarily
fixing work of the packaging sheet S can be facilitated.
[0102] Still furthermore, in the above embodiment, the controller
120 skips the print processing. However, the present invention is
not limited to this style. It may be printed that the area
corresponding to a blank package is a blank package (for example,
characters of "blank package" may be printed) without skipping the
print processing. Legibility of "blank package" is enhanced by this
printing.
[0103] In the above embodiment, processing of measuring the feeding
distance of the packaging sheet S or processing of measuring the
packaging frequency of the packaging sheet S may be applied as the
skip position count-down processing. That is, there may be applied
the processing of measuring the feeding distance on the basis of
the rotation amount of the feeding roller 46 or the like and
determining whether this feeding distance reaches a distance by
which the connection site of the packaging sheet S reaches the skip
start position, or the processing of determining whether the
packaging frequency of the packaging sheet S reaches a packaging
frequency at which the connection site of the packaging sheet S
reaches the skip start position.
* * * * *