U.S. patent application number 10/966500 was filed with the patent office on 2005-04-21 for creel for textile machines.
This patent application is currently assigned to Saurer GmbH & Co. KG. Invention is credited to Beckmann, Markus, Schwarzer, Rainer, Tetzlaff, Georg.
Application Number | 20050082404 10/966500 |
Document ID | / |
Family ID | 34399536 |
Filed Date | 2005-04-21 |
United States Patent
Application |
20050082404 |
Kind Code |
A1 |
Beckmann, Markus ; et
al. |
April 21, 2005 |
Creel for textile machines
Abstract
A creel is provided with two insert pegs that are mounted on a
retainer secured to a machine frame that is pivotable between a
lower loading station and an upper loading position. The creel also
includes a yarn guide element with a longitudinal opening whose
length substantially corresponds to the vertical spacing between
the axes of the insert pegs such that the ends of the longitudinal
opening can be brought into a position lying substantially on the
extension of the insert peg axes. Two elongate guide organs are
mounted on the side of the yarn guide element and each has a yarn
eye opening. The creel further includes a yarn retaining organ
located between the insert pegs at a lateral spacing from the plane
defined by the insert peg axes and whose retaining force lies under
the withdrawal force by which the yarn is drawn off a feed
package.
Inventors: |
Beckmann, Markus; (Krefeld,
DE) ; Schwarzer, Rainer; (Tonisvorst, DE) ;
Tetzlaff, Georg; (Aachen, DE) |
Correspondence
Address: |
ROBERT W. BECKER & ASSOCIATES
Suite B
707 Highway 66 East
Tijeras
NM
87059
US
|
Assignee: |
Saurer GmbH & Co. KG
Krefeld
DE
|
Family ID: |
34399536 |
Appl. No.: |
10/966500 |
Filed: |
October 15, 2004 |
Current U.S.
Class: |
242/129 |
Current CPC
Class: |
D01H 1/18 20130101; D01H
13/04 20130101 |
Class at
Publication: |
242/129 |
International
Class: |
B65H 049/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 17, 2003 |
DE |
103 48 279.2 |
Claims
1. A creel with at least two insert pegs arranged one above the
other that are mounted on a retainer secured to a machine frame
that is pivotable between a lower loading station and an upper
loading position, the creel comprising: (a) insert pegs having
substantially horizontal axes extending parallel to one another;
(b) a yarn guide element with a pair of vertically spaced
longitudinal openings each of whose length substantially
corresponds to the vertical spacing between the axes of the insert
pegs such that the ends of the longitudinal opening can be brought
into a position lying substantially on the extension of the insert
peg axes; (c) a pair of elongate guide organs mounted on the side
of the yarn guide element facing the insert pegs in the region of
the ends of the longitudinal opening laterally next to the
longitudinal openings on the yarn guide element and each elongate
guide organ having, on its free end, a yarn eye opening laterally
toward the longitudinal opening that is so arranged that the yarn
guide eye is substantially outside of the maximum package diameter
of a package to be inserted on the insert pegs; and (d) a yarn
retaining organ located substantially between the insert pegs at a
lateral spacing from the plane defined by the axes of the insert
pegs and whose retaining force lies under the withdrawal force by
which the yarn is drawn off the respective feed package.
2. A creel according to claim 1, wherein each guide organ comprises
a wire having one of its ends secured to the plate, whose free end
is bent into a hook that forms a yarn eye opening laterally in the
direction toward the longitudinal opening.
3. A creel according to claim 1, wherein the yarn retaining organ
is disposed on a plane defined by the back ends of the insert pegs
and extending substantially vertically to the axes of the insert
pegs.
4. A creel according to claim 3, wherein the yarn retaining organ
is configured as a yarn clamp.
5. A creel according to claim 4, wherein the yarn retaining organ
comprises at least one clamp tongue that is resiliently biased
against a support organ.
6. A creel according to claim 1, and further comprising a separator
surface disposed between the insert pegs.
7. A creel according to claim 6, wherein the yarn retaining organ
is mounted on the separator surface.
8. A creel according to claim 1, wherein the insert pegs are
disposed obliquely at an angle relative to the horizon in the range
of 5-10.degree..
9. A creel according to claim 1, wherein the retaining element
supporting the insert pegs is adjustably positionable relative to
the yarn guide element having the longitudinal opening.
10. A creel according to claim 1, wherein the insert pegs are
pivotally mounted.
Description
BACKGROUND OF THE INVENTION
[0001] The invention relates to a creel with at least two insert
pegs arranged one above the other that are mounted on a retainer
secured to a machine frame that is pivotable between a lower
loading station and an upper loading position. A creel of this type
is described, for example, in FR-A-2 794 136.
[0002] On creels of this type, fully wound feed packages are
inserted on respective insert pegs, the feed packages having a yarn
reserve so that, after the running out of yarn from the first
package, the drawing of yarn from the second package occurs,
whereby the yarn end of a first package is connected with the
beginning portion of the yarn of a second package.
[0003] A package holder described in DE-AS 1 145 527 is so
conceived that, upon rewinding of yarn after the run out of yarn of
an unwinding package, an operational stoppage is to be avoided as a
consequence of the run out process being configured to be
continuous, in that the yarn end of the unwinding package is
connected with the beginning portion of the yarn of a reserve
package. A package holder is provided for this purpose having
several, for example two, insert pegs, the package holder being
rotatable about an axis that is centrally located between the two
insert pegs.
[0004] In addition to the relatively expensive control mechanism
associated therewith, this known package holder suffers from the
significant disadvantage that the insert pegs must be mounted on
the package holder in a linkage manner to ensure that the axes of
the insert pegs always point toward a predetermined point that is
almost exactly on a yarn guide eye that commonly serves the pair of
packages inserted onto the insert pegs.
[0005] A creel disclosed in U.S. Pat. No. 1,180,284 comprises
several insert pegs arranged adjacent one another and above one
another for receiving unwinding packages disposed thereon, whereby
respective pairs of packages are arranged relative to one another
such that the yarn end of a unwinding package is connected with the
beginning portion of the yarn of a second unwinding package that
serves as a reserve package. The individual insert pegs are secured
on a retainer with principally upwardly oriented axes, whereby, in
particular, the insertion of feed or, respectively, unwinding,
packages on the insert pegs is made more difficult, the inserts
pegs being pivotable about a horizontal axis out of a substantially
vertical position into a position oriented upwardly obliquely
relative to the front side of the machine in order to facilitate
the exchange of packages that have been fully unwound for new
reserve packages. For each pair of insert pegs supporting a
respective pair of packages that are arranged together as a run out
unit, there are provided, for the systematic drawing off of yarn,
yarn guide eyes that are, on the one hand, above the insert pegs,
and, on the other hand, below the insert pegs. With regard to the
set up for this known creel, which is not a state of the art
reference for the present invention, at least two insert pegs
arranged one over another for mutually associated unwinding
packages are mounted on a holder secured to the machine frame, the
holder being pivotable between a lower loading station and an upper
operating position.
SUMMARY OF THE INVENTION
[0006] The invention offers a solution to the challenge of
providing a creel that is configured such that the creel, relative
to the creel described in DE-AS 1 145 527, comprises a simplified
construction in order to thereby ensure, after the complete
unwinding of one unwinding package, the reliable drawing out of
yarn from a second unwinding package forming a reserve package.
[0007] In order to implement the solution to this challenge, the
creel is characterized via:
[0008] a) insert pegs having substantially horizontal axes
extending parallel to one another;
[0009] b) a yarn guide element with a longitudinal opening whose
length substantially corresponds to the vertical spacing between
the axes of the insert pegs such that the ends of the longitudinal
opening can be brought into a position lying substantially on the
extension of the insert peg axes
[0010] c) two elongate guide organs are mounted on the side of the
yarn guide element facing the insert pegs in the region of the ends
of the longitudinal opening laterally next to the longitudinal
openings on the yarn guide element and have, on their free ends,
respectively, a yarn eye opening laterally toward the longitudinal
opening that is so arranged that the yarn guide eye is
substantially outside of the maximum package diameter of one of the
packages to be inserted on the insert pegs, and
[0011] d) a yarn retaining organ that is located substantially
between the insert pegs at a lateral spacing from the plane defined
by the axes of the insert pegs.
[0012] In order that a creel of this type can fully achieve its
effectiveness, the operation is to proceed as follows after the
insertion onto insert pegs of two fully wound feed packages after
the coupling of the corresponding yarn ends:
[0013] upon the drawing out of a yarn from the upper feed package,
the yarn end in the region of the yarn reserve is, in a
conventional manner, connected with the free beginning portion of
the yarn of the fully wound lower feed package via, for example,
splicing or knotting, whereby attention is to be paid that the yarn
drawn from the upper feed package in an over the top manner travels
above the yarn guide organ associated with this feed package into
the longitudinal opening of the yarn guide element.
[0014] the yarn section located between the pair of packages is
firmly clamped by means of the yarn retaining organ;
[0015] the yarn section is then laid into the yarn eye from above
and is guided downwardly and is, from the downward position,
trained around the lower yarn eye.
[0016] In this manner, it is ensured that, after the complete
running out of the upper feed package and after the release via the
yarn retaining organ, a friction-free drawing out of the yarn from
the lower feed package follows, whereby the yarn then being drawn
from the lower feed package in an over the top manner travels
underneath the yarn guide element associated with the lower package
into the longitudinal opening.
[0017] The invention is described in more detail hereinafter with
reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 is a schematic side view of a textile machine
provided on both sides along the machine longitudinal direction
with work stations, the textile machine being, for example, a
cabling machine on whose upper side are pivotably mounted creels 3,
3' on respective oppositely disposed machine sides;
[0019] FIG. 2 is a schematic illustration of respective individual
elements of the yarn transition device, as well as the yarn travel
during the transition of the yarn drawing out from a feed package
to a second feed package;
[0020] FIG. 3 is a schematic illustration of respective individual
elements of the yarn transition device, as well as the yarn travel
during the transition of the yarn drawing out from a feed package
to a second feed package; and
[0021] FIG. 4 is a schematic illustration of respective individual
elements of the yarn transition device, as well as the yarn travel
during the transition of the yarn drawing out from a feed package
to a second feed package.
DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS
[0022] In connection with the textile machine 1 that is only
schematically illustrated in FIG. 1, the textile machine is, for
example, a cabling machine having cable spindles extending on both
sides thereof along the machine longitudinal direction. The one
creel 3 associated with an individual cable spindle 2 is pivotally
mounted on the upper side of the machine frame 5 by means, for
example, of a four piece linkage 4. The individual creel 3 can also
be configured in a conventional manner as a double creel such that
each creel is provided with four feed packages Sp or, respectively,
can be loaded with such feed packages, so that each respective pair
of neighboring cable spindles of the cabling machine can be served
by an individual package creel. In connection with the feed package
Sp, such packages are the so-called simple-feed packages for the
outer yarn of the cabling process.
[0023] The creel 3 comprises a support plate 6 on which, on each
side thereof, there is respectively mounted a retaining plate 7
extending substantially vertically, the retaining plate supporting
two vertically oriented insert pegs 8 that are disposed one above
the other and one in front of the other and are operable for the
insertion thereon of feed packages Sp. The insert pegs 8 are
disposed at an angle relative to the horizon in the range of
5-10.degree. toward the front in order to ensure a secure seating
of the inserted feed packages Sp.
[0024] A forwardly oriented arm 9 is secured to the support plate
7, the arm supporting a yarn change of direction eye 10 operable to
change the direction of the yarn F1 drawn off the individual feed
package Sp toward the lower machine region--that is, in the
direction toward the cable spindle 2. This yarn F1 is, in
correspondence with the typical cabling process, united in the
region of the yarn guide eye 11 with the yarn F2 that is drawn in
an over the top manner off the feed package located within the
cable spindle 2. A yarn delivery roller 12 as well as a yarn
winding assembly 13 are disposed outside of the cable spindle in a
conventional manner.
[0025] A plate forming a yarn guide element 21 is secured on the
arm 9, the plate being provided with a longitudinal opening or slot
21.1 whose length substantially corresponds to the vertical spacing
between the axes of the insert pegs 8. The plate 21 is so
positioned that the ends of the longitudinal opening are located in
the extensions of the axes of the insert pegs 8. The plate 21
supports two elongate guide organs 22, 23 that are secured on the
side of the plate 21 facing the insert pegs 8 in the region of the
ends of the longitudinal opening laterally adjacent the
longitudinal opening 21.1 and that are so oriented that they
traverse the longitudinal opening. The individual guide organs 22,
23 are substantially comprised of a wire having one of its ends
secured to the plate 21 and having, on its free end, a hook 22.1
or, respectively, 23.1, that forms a yarn eye opening laterally in
the direction toward the longitudinal opening 21.1. Each guide
organ 22 or, respectively, 23, has a length such that the yarn eye
configured by the respective hook 22.1 or 23.1 is substantially
outside of the maximum package diameter of the package Sp to be
inserted onto the insert peg. The guide organs 22 or, respectively,
23, are secured shortly before the ends of the longitudinal opening
21.1 on the plate 21 such that these guide organs 22, 23, together
with the ends of the longitudinal opening 21.1, delimit the yarn
draw off opening lying in the extension of the axes of the insert
pegs.
[0026] A separator surface 25 is secured on the retaining plate 7
between the insert pegs 8. A yarn retaining organ 24 is secured on
the separator surface 25 at a lateral spacing from the plane
defined by the axes of the insert pegs 8, the yarn retaining organ
preferably being configured as a yarn clamp and comprising at least
one clamp tongue 24.2 that is resiliently biased against a support
organ 24.1. The retaining force of the yarn retaining organ 24 is
adjusted such that it lies slightly under the withdrawal force by
which the yarn F is drawn off the feed package Sp such that a yarn
retained by this yarn retaining organ 24 is released if a
withdrawal force corresponding to the drawing off tension of the
yarn F is exerted on the yarn.
[0027] Reference is had to FIGS. 2-4 for the following description
of the operational manner of the inventive device during the
transition of the yarn withdrawal from an upper feed package to a
lower feed package and, consequently, in an analogous manner, the
transition of the yarn withdrawal from a lower feed package to an
upper feed package.
[0028] FIG. 2 shows an operational condition in which a yarn F is
drawn off an upper feed package Sp shortly before this package has
been completely unwound. The yarn F drawn from the package Sp in an
over the top manner is consequently drawn through the opening,
located in the region of the upper end of the longitudinal opening
21.1, that is bounded by the yarn guide organ 23. The yarn end
coming from the upper package is connected with the beginning
portion of the yarn Fn running out of the lower, fully wound
package. The yarn section located between the pair of packages is
disposed in the yarn retaining organ 24 and travels upwardly
therefrom to be trained around the hook 23.1 and is subsequently
trained around the lower hook 22.1. After the upper package has
been completely fully unwound, the yarn of the package that is
still within the upper yarn guide opening is initially drawn out of
the yarn retaining organ 24 and subsequently slid out of the hook
23.1 such that it eventually can glide along the lower yarn guide
organ 22 in the direction toward the yarn guide opening bounded
from above by this yarn guide organ associated therewith in the
region of the lower end of the longitudinal opening 21.1, until the
operational position shown in FIG. 3 is reached, and the yarn is
then drawn off again from the lower package in an over the top
manner.
[0029] It is important that the hooks 22.1 or, respectively, 23.1,
forming the yarn eyes are open in the direction toward the plate 21
and away from the yarn retaining organ 24.
[0030] In connection with a yarn exchange or, respectively, a yarn
transition, from a lower package to an upper package, a process is
then performed, in accordance with FIG. 4, by which the yarn
reserve of the lower package is connected, in an analogous manner
as described with respect to FIG. 2, with the beginning portion of
the yarn of the upper, fully wound package. The yarn section
located between the pair of packages is laid into the yarn
retaining organ 24 and is then trained around the hook 22.1 from
outside and downwardly toward the inside and above and, then,
trained into the upper hook 23.1 from below and inwardly toward the
top and outwardly.
[0031] In order to exchange a fully wound spool for a completely
unwound package during a yarn withdrawal process, the insert pegs
are preferably pivotable in a lateral direction.
[0032] The specification incorporates by reference the disclosure
of German priority document 103 48 279.2 filed Oct. 17, 2003.
[0033] The present invention is, of course, in no way restricted to
the specific disclosure of the specification and drawings, but also
encompasses any modifications within the scope of the appended
claims.
* * * * *