U.S. patent application number 13/738474 was filed with the patent office on 2013-07-25 for press die for simultaneous forming of bending and curling.
This patent application is currently assigned to SAMSUNG ELECTRONICS CO., LTD.. The applicant listed for this patent is SAMSUNG ELECTRONICS CO., LTD.. Invention is credited to Cheol Young Han, Tae Hun Kang, Jun Beom Lee, Ki Ju Nam.
Application Number | 20130186167 13/738474 |
Document ID | / |
Family ID | 48796112 |
Filed Date | 2013-07-25 |
United States Patent
Application |
20130186167 |
Kind Code |
A1 |
Nam; Ki Ju ; et al. |
July 25, 2013 |
PRESS DIE FOR SIMULTANEOUS FORMING OF BENDING AND CURLING
Abstract
A press die for combination forming, capable of simultaneously
performing a bending process and a curling process, the press die
including a first die installed so as to perform a vertical
movement, a second die configured to support a workpiece from a
lower side of the first die, a moving apparatus configured to move
the workpiece being supported by the second die, a stripper
configured to hold the workpiece being moved by the moving
apparatus such that the workpiece is mounted on the second die, a
third die provided on the first die to bend the workpiece being
mounted on the second die, and a fourth die provided on the second
die to curl the workpiece being completed with the bending.
Inventors: |
Nam; Ki Ju; (Suwon-si,
KR) ; Lee; Jun Beom; (Suwon-si, KR) ; Kang;
Tae Hun; (Suwon-si, KR) ; Han; Cheol Young;
(Yongin-si, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SAMSUNG ELECTRONICS CO., LTD.; |
Suwon-si |
|
KR |
|
|
Assignee: |
SAMSUNG ELECTRONICS CO.,
LTD.
Suwon-si
KR
|
Family ID: |
48796112 |
Appl. No.: |
13/738474 |
Filed: |
January 10, 2013 |
Current U.S.
Class: |
72/397 |
Current CPC
Class: |
B21D 37/08 20130101;
B21D 19/12 20130101; B21D 11/00 20130101; B21D 19/08 20130101 |
Class at
Publication: |
72/397 |
International
Class: |
B21D 11/00 20060101
B21D011/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 19, 2012 |
KR |
10-2012-0005990 |
Claims
1. A press die for simultaneous combination forming of a bending
and a curling, the press die comprising: a first die installed so
as to perform a vertical movement; a second die configured to
support a workpiece from a lower side of the first die; a moving
apparatus configured to move the workpiece being supported by the
second die; a stripper configured to hold the workpiece being moved
by the moving apparatus such that the workpiece is mounted on the
second die; a third die provided on the first die to bend the
workpiece being mounted on the second die; and a fourth die
provided on the second die to curl the workpiece being completed
with the bending.
2. The press die of claim 1, wherein the moving apparatus
comprises: a cam driver fixed to the first die and configured to
move vertically according to the vertical movement of the first
die; a cam support portion provided to correspond to the cam driver
and slidably installed at the second die; a cam slider provided so
as to perform a sliding movement in linkage with the cam support
portion; a bending punch fixed to the cam slider and configured to
support the workpiece such that the workpiece is mounted on the
bending punch.
3. The press die of claim 2, wherein the moving apparatus comprises
a moving plate movably connecting the cam support portion to the
cam slider.
4. The press die of claim 2, wherein the moving apparatus further
comprises a stopper configured to limit the movement of the cam
slider.
5. The press die of claim 2, wherein the moving apparatus further
comprises a punch holder configured to move the fourth die
vertically.
6. The press die of claim 5, further comprising a gas spring
configured to transmit a power to move the punch holder
vertically.
7. The press die of claim 2, wherein the moving apparatus comprises
a returning member configured to return the cam slider to an
original position of the cam slider when the workpiece is completed
with processing.
8. The press die of claim 2, wherein: the cam driver is provided at
a lower surface thereof with a first inclination portion, and the
cam support portion is provided with a second inclination portion
corresponding to the first inclination portion.
9. The press die of claim 8, wherein the cam slider moves when the
first inclination portion presses the second inclination portion
when the first die is lowered, and as the cam slider moves, the
workpiece is fixed to the bending punch and the stripper.
10. The press die of claim 1, wherein the third die comprises a
bending portion to perform a bending process on the workpiece.
11. The press die of claim 10, wherein the third die is lowered as
the first die is lowered, so as to bend the workpiece fixed to the
bending punch and the striper, thereby performing the bending
process.
12. The press die of claim 1, wherein the fourth die comprises a
curling portion to perform a curling process on the workpiece.
13. The press die of claim 12, wherein the fourth die is lowered as
the first die is lowered, so as to curl the workpiece completed
with the bending process in a state of being fixed to the bending
punch and the stripper, thereby performing the curling process.
14. The press die of claim 1, wherein the press die is provided in
a rectangular shape, and the bending process and the curling
process are performed at eight forming portions comprising four
plane forming portions and four edge forming portions.
15. The press die of claim 1, wherein an ejection is performed at
the four edge forming portions after an ejection is performed at
the four plane forming units among the eight forming units.
16. A press die for simultaneous combination forming of a bending
and a curling, the press die comprising a first die installed so as
to perform a vertical movement; a cam driver fixed to the first
die, and configured to move vertically according to the vertical
movement of the first die; a second die configured to support a
workpiece from a lower side of the first die; a cam support portion
provided so as to correspond to the cam driver, and slidably
installed at the second die; a cam slider provided so as to perform
a sliding movement in linkage with the cam support portion; a
bending punch fixed to the cam slider, and configured to support
the workpiece such that the workpiece is mounted on the bending
punch; a stripper configured to hold the workpiece being moved by
the cam slider such that the workpiece is mounted on the bending
punch; a third die mounted on the first die, and having a bending
portion to bend the workpiece being mounted on the bending punch;
and a fourth die provided on the second die, and having a curling
portion to curl the workpiece being completed with the bending.
17. The press die of claim 16, further comprising a moving plate
movably connecting the cam support portion to the cam slider.
18. The press die of claim 16, further comprising a stopper
configured to limit the movement of the cam slider.
19. The press die of claim 16, further comprising a punch holder
configured to move the fourth die vertically.
20. The press die of claim 19, further comprising a gas spring
configured to transmit a power to move the punch holder
vertically.
21. The press die of claim 16, further comprising a returning
member configured to return the cam slider to an original position
of the cam slider when the workpiece is completed with
processing.
22. The press die of claim 16, wherein the press die is provided in
a rectangular shape, and the bending process and the curling
process are performed at eight forming portions comprising four
plane forming portions and four edge forming portions.
23. The press of claim 22, wherein an ejection is performed at the
four edge forming portions after an ejection is performed at the
four plane forming units among the eight forming units.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of Korean Patent
Application No. 10-2012-0005990, filed on Jan. 19, 2012 in the
Korean Intellectual Property Office, the disclosure of which is
incorporated herein by reference.
BACKGROUND
[0002] 1. Field
[0003] Embodiments of the present disclosure relate to a press die,
and more particularly, to a press die for combination forming
capable of performing a bending process and a curling process.
[0004] 2. Description of the Related Art
[0005] In general, a press die is an apparatus to conduct a forming
by disposing a material strip at an upper side of the die having a
groove, and applying a force to the material strip such that the
material strip is deformed in a shape corresponding to the groove,
thereby manufacturing a product corresponding to the groove.
[0006] For a bending process of the press die, first a press is
lowered such that a workpiece is held by an upper pad, hereinafter,
referred to as a stripper, and then a bending punch is lowered to
complete the bending forming. In order to prevent the product bent
downward from being stuck, a lower pad is additionally used.
[0007] For a curling process of the press die, first, a press is
lowered such that a workpiece is held by a stripper, and then the
press is lowered such that a curling is formed by a curling die
provided at a lower side.
[0008] As a separate press die is manufactured for each of the
bending process and the curling process, the number of sets of die
is increased and thus the working time is increased.
[0009] In addition, with the increase of the working time, the
manufacturing cost is increased.
SUMMARY
[0010] Therefore, it is an aspect of the present disclosure to
provide a press die for combination forming, capable of
simultaneously performing a bending process and a curling
process.
[0011] It is another aspect of the present disclosure to provide a
press die for combination forming, capable of reducing the
manufacturing cost with a simpler and smaller structure
thereof.
[0012] Additional aspects of the disclosure will be set forth in
part in the description which follows and, in part, will be
apparent from the description, or may be learned by practice of the
disclosure.
[0013] In accordance with one aspect of the present disclosure, a
press die for simultaneous combination forming of a bending and a
curling includes a first die, a second die, a moving apparatus, a
stripper, a third die, and a fourth die. The first die may be
installed so as to perform a vertical movement. The second die may
be configured to support a workpiece from a lower side of the first
die. The moving apparatus may be configured to move the workpiece
being supported by the second die. The stripper may be configured
to hold the workpiece being moved by the moving apparatus such that
the workpiece is mounted on the second die. The third die may be
provided on the first die to bend the workpiece being mounted on
the second die. The fourth die may be provided on the second die to
curl the workpiece being completed with the bending.
[0014] The moving apparatus may include a cam driver, a cam support
portion, a cam slider, and a bending punch. The cam driver may be
fixed to the first die and configured to move vertically according
to the vertical movement of the first die. The cam support portion
may be provided to correspond to the cam driver and slidably
installed at the second die. The cam slider may be provided so as
to perform a sliding movement in linkage with the cam support
portion. The bending punch may be fixed to the cam slider and
configured to support the workpiece such that the workpiece is
mounted on the bending punch.
[0015] The moving apparatus may include a moving plate movably
connecting the cam support portion to the cam slider.
[0016] The moving apparatus may further include a stopper
configured to limit the movement of the cam slider.
[0017] The moving apparatus may further include a punch holder
configured to move the fourth die vertically.
[0018] The press die may further include a gas spring configured to
transmit a power to move the punch holder vertically.
[0019] The moving apparatus may further include a returning member
configured to return the cam slider to an original position of the
cam slider when the workpiece is completed with processing.
[0020] The cam driver may be provided at a lower surface thereof
with a first inclination portion. The cam support portion may be
provided with a second inclination portion corresponding to the
first inclination portion.
[0021] The cam slider may move when the first inclination portion
presses the second inclination portion when the first die is
lowered, and as the cam slider moves, the workpiece may be fixed to
the bending punch and the stripper.
[0022] The third die may include a bending portion to perform a
bending process on the workpiece.
[0023] The third die may be lowered as the first die is lowered, so
as to bend the workpiece fixed to the bending punch and the
striper, thereby performing the bending process.
[0024] The fourth die may include a curling portion to perform a
curling process on the workpiece.
[0025] The fourth die may be lowered as the first die is lowered,
so as to curl the workpiece completed with the bending process in a
state of being fixed to the bending punch and the stripper, thereby
performing the curling process.
[0026] The press die may be provided in a rectangular shape, and
the bending process and the curling process may be performed at
eight forming portions including four plane forming portions and
four edge forming portions.
[0027] An ejection may be performed at the four edge forming
portions after an ejection is performed at the four plane forming
units among the eight forming units.
[0028] In accordance with another aspect of the present disclosure,
a press die for simultaneous combination forming of a bending and a
curling includes a first die, a cam driver, a second die, a cam
support portion, a cam slider, a bending punch, a stripper, a third
die, and a fourth die. The first die may be installed so as to
perform a vertical movement. The cam driver may be fixed to the
first die and configured to move vertically according to the
vertical movement of the first die. The second die may be
configured to support a workpiece from a lower side of the first
die. The cam support portion may be provided so as to correspond to
the cam driver, and may be slidably installed at the second die.
The cam slider may be provided so as to perform a sliding movement
in linkage with the cam support portion. The bending punch may be
fixed to the cam slider and may be configured to support the
workpiece such that the workpiece is mounted on the bending punch.
The stripper may be configured to hold the workpiece being moved by
the cam slider such that the workpiece is mounted on the bending
punch. The third die may be mounted on the first die, and may have
a bending portion to bend the workpiece being mounted on the
bending punch. The fourth die may be provided on the second die and
have a curling portion to curl the workpiece being completed with
the bending.
[0029] The press die may further include a moving plate movably
connecting the cam support portion to the cam slider.
[0030] The press die may further include a stopper configured to
limit the movement of the cam slider.
[0031] The press die may further include a punch holder configured
to move the fourth die vertically.
[0032] The press die may further include a gas spring configured to
transmit a power to move the punch holder vertically.
[0033] The press die may further include a returning member
configured to return the cam slider to an original position of the
cam slider when the workpiece is completed with processing.
[0034] The press die may be provided in a rectangular shape, and
the bending process and the curling process may be performed at
eight forming portions including four plane forming portions and
four edge forming portions.
[0035] An ejection may be performed at the four edge forming
portions after an ejection is performed at the four plane forming
units among the eight forming units.
[0036] As described above, a die capable of simultaneously
performing a bending process and a curling process is provided, the
number of forming steps is reduced, thereby enhancing the spatial
efficiency of the press equipment and the plant.
[0037] In addition, with a simplified and smaller structured, the
manufacturing cost is reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] These and/or other aspects of the disclosure will become
apparent and more readily appreciated from the following
description of the embodiments, taken in conjunction with the
accompanying drawings of which:
[0039] FIG. 1 is a view schematically illustrating a press die for
bending-curling simultaneous combination forming in accordance with
one embodiment of the present disclosure.
[0040] FIG. 2 is an enlarged view showing a portion "A" of FIG.
1.
[0041] FIGS. 3-8 are views schematically illustrating the operation
of the press die for bending-curling simultaneous combination
forming in accordance with the embodiment of the present
disclosure.
[0042] FIG. 9 is a plan view schematically illustrating the press
die for bending-curling simultaneous combination forming in
accordance with the embodiment of the present disclosure.
DETAILED DESCRIPTION
[0043] Reference will now be made in detail to the embodiments of
the present disclosure, examples of which are illustrated in the
accompanying drawings, wherein like reference numerals refer to
like elements throughout.
[0044] FIG. 1 is a view schematically illustrating a press die for
bending-curling simultaneous combination forming in accordance with
one embodiment of the present disclosure.
[0045] Referring to FIG. 1, a press die 1 for bending-curling
simultaneous forming includes a first die 10 installed so as to
perform a vertical movement, a second die 20 configured to support
a workpiece 60 while being disposed at a lower side of the first
die 10, and a moving apparatus 30 configured to slidably move the
workpiece 60 being supported by the second die 20.
[0046] The first die 10 is provided so as to perform a vertical
movement by an operating cylinder (not shown). A stripper 11 to
support and hold the workpiece 60 and a cam driver 31 configured to
move vertically according to the vertical movement of the first die
10 are fixedly installed to a lower surface of the first die 10 at
a predetermined position.
[0047] The stripper 11 may include a gas spring (not shown) or an
operating cylinder (not shown) that are elastically moved with
respect to the first die 10.
[0048] In addition, a third die 40 having a bending portion 41 is
fixedly installed on the first die 10 to bend the workpiece 60.
[0049] The third die 40 may be disposed between the cam driver 31
and the stripper 11 of the first die 10.
[0050] The second die 20 is installed opposite to the first die 10.
A bending punch 34 and the moving apparatus 30 are installed at the
second die 20. The bending punch 34 may be configured to support
the workpiece 60, which is held by the stripper 11, from a lower
side of the workpiece 60. The moving apparatus 30 may be configured
to slide the workpiece 60 fixed by the bending punch 34 to a
processing position.
[0051] The moving apparatus 30 includes the cam driver 31 fixed to
the first die 10 and configured to move vertically according to the
vertical movement of the first die 10, a cam support portion 32
installed at the second die 20 so as to correspond to the cam
driver 31, a cam slider 33 provided so as to be slidable in linkage
with the cam support portion 32, and a moving plate 30a movably
connecting the cam support portion 32 to the cam slider 33.
[0052] The bending punch 34 may be fixed to the cam slider 33 and
configured to be slidable along with the slide movement of the cam
slider 33.
[0053] The cam driver 31 is provided at a lower surface thereof
with a first inclination portion 31a that is inclined at a
predetermined angle, and the cam support portion 32 is provided
with a second inclination portion 32a corresponding to the first
inclination portion 31a of the cam driver 31.
[0054] As the first die 10 moves downward, the first inclination
portion 31a of the cam driver 31 makes contact with the second
inclination portion 32a of the cam driver 31 to press the cam
support portion 32 toward a front, and accordingly, the cam support
portion 32 moves forward so that the cam slider 33 connected to the
cam support portion 32 through the moving plate 30a is moved.
[0055] The bending punch 34 which is configured to have the
workpiece 60 mounted thereon is fixed to the cam slider 33.
[0056] As the cam slider 33 moves, the bending punch 34 moves
forward together with the cam slider 33, and the workpiece 60
mounted on the bending punch 34 is moved to a processing
position.
[0057] A fourth die 50 having a curling portion 51 is fixedly
installed on the second die 20 to curl the workpiece 60.
[0058] The fourth die 50 may be provided at a lower side of the
bending punch 34.
[0059] In addition, a guide block 39 is fixedly installed at the
second die 20 to guide the vertical movement of the cam driver 31
and the third die 40. The guide block 39 is disposed between the
cam driver 31 and the third die 40, so as to stably support the
vertical movement of the cam driver 31 and the third die 40.
[0060] The moving apparatus 30 may further include a punch holder
37 such that the fourth die 50 moves vertically.
[0061] The punch holder 37 is installed so as to move vertically by
the gas spring 38.
[0062] The moving apparatus 30 is provided at a rear side thereof
with a stopper 35 configured to limit the movement of the cam
slider 33.
[0063] A returning member 36 is provided at a front of the cam side
33 while being spaced apart from the cam slider 33 by a
predetermined interval, to return the cam slider 33 to its original
position when the workpiece 60 is completed with processing.
[0064] The returning member 36 is configured to restore the
original positions of the cam support portion 32 and the cam slider
33 that are moved by the cam driver 31, and may include a fixed
block fixed to the second die 20 and a retuning spring (not shown)
configured to return the cam slider 33 and the moving plate
30a.
[0065] Referring to FIG. 2, with reference to the press die 1 for
bending-curling simultaneous forming, the workpiece 60 is mounted
at a bending punch upper surface 34a of the bending punch 34, and
is fixed while being held by a stripper lower surface 11a of the
stripper 11 fixed to the first die 10.
[0066] The workpiece 60 fixed by the stripper 11 is subject to a
bending process by the third die 40 that is lowered.
[0067] The third die 40 is a bending die that is provided at one
end portion, which makes contact with the stripper 11, with the
bending portion 41.
[0068] At the same time of when the bending process is completed,
the workpiece 60 is subject to a curling process by the fourth
process 50 that is provided at a lower surface of the bending punch
34.
[0069] The fourth die 50 is a curling die that is provided at one
end portion, which makes contact with the stripper 11, with the
curling portion 51.
[0070] Accordingly, the workpiece 60 fixed between the stripper 11
and the bending punch 34 is sequentially subject to the bending
process and the curling process by the third die 40 and the fourth
die 50.
[0071] FIGS. 3 and 8 are views schematically illustrating the
operation of the press die for bending-curling simultaneous
combination forming in accordance with the embodiment of the
present disclosure.
[0072] Referring to FIGS. 3 to 8, the operation of the press die
for bending-curling simultaneous forming is as follows.
[0073] The stripper 11, the third die 40 and the cam driver 31 are
installed at the lower surface of the first die 10 that is provided
so as to move vertically.
[0074] The second die 20 is provided at the lower side of the first
die 10.
[0075] The cam support portion 32, the guide block 39 and the
bending punch 34 are provided on the second die 20. The cam support
portion 32 corresponds to the cam driver 31 of the first die 10.
The guide block 39 may be configured to guide the vertical movement
of the cam driver 31 and the third die 40 while being located at a
position spaced apart from the cam support portion 32 by a
predetermined interval. The bending punch 34 may be configured to
support the workpiece 60 such that the workpiece 60 is mounted on
the bending punch 34.
[0076] As the first die 10 moves downward, the workpiece 60 is held
by the lower surface 11a of the stripper 11 of the first die
10.
[0077] Referring to FIG. 5, in the state as above, as the first die
10 moves downward further, the first inclination portion 31a of the
cam driver 31 makes contact with the second inclination portion 32a
of the cam support portion 32.
[0078] As the first inclination portion 31 of the cam driver 31
moves downward further, the second inclination portion 32a making
contact with the first inclination portion 31a is pushed, and thus
the cam support portion 32 is slid forward.
[0079] As the cam support portion 32 is moved forward, the cam
slider 33 connected to the cam support portion 32 through the
moving plate 30a is moved forward, and the bending punch 34 fixed
to the cam slider 33 is moved forward.
[0080] The bending punch 34 moves the workpiece to the processing
position, and the workpiece 60 is mounted on the bending punching
upper surface 34a and fixed between the bending punch upper surface
34a and the stripper lower surface 11a.
[0081] If the workpiece 60 is disposed at the processing position,
the cam driver 31 and the third die 40 move downward by being
guided by the guide block 39, and the bending portion 41 of the
third die 40 bends the workpiece 60 being fixed between the
stripper 11 and the bending punch 34.
[0082] At the same time of the bending process, the gas spring 38
of the second die 20 operates so that the punch holder 37 moves
upward and thus the fourth die 50 moves upward.
[0083] Accordingly, a lower portion of the workpiece 60 is curled
by the curling portion 51 of the fourth die 50.
[0084] If the bending process and the curling process are performed
on the workpiece 60, the first die 10 is moved upward.
[0085] As the pressing force by the cam driver 31 is removed from
the cam support portion 32, the cam slider 33 returns to the
original state by the restoring force of the returning member
36.
[0086] At this time, the movement of the cam slider 33 is stopped
by the stopper 35.
[0087] As the cam slider 33 returns to the original position, the
bending punch 34 fixed to the cam slider 33 returns to the original
position.
[0088] As the stripper 11 fixed to the first die 10 and the third
die 40 move upward, the fixing of the workpiece 60 is released,
thereby enabling a product finished with the bending and the
curling to be ejected.
[0089] In this manner, the bending and the curling are
simultaneously performed on the workpiece 60, so that the number of
forming steps is reduced, thereby improving the productivity.
[0090] In addition, when an undercut shape is formed at the
workpiece 60 by the curling process, an additional eject apparatus
is not required, so that the number of forming steps is
reduced.
[0091] FIG. 9 is a plan view schematically illustrating the press
die for bending-curling simultaneous combination forming in
accordance with the embodiment of the present disclosure.
[0092] Referring to FIG. 9, the press die 1 for bending-curling
simultaneous forming is provided in a rectangular shape.
[0093] The press die 1 for bending-curling simultaneous forming
includes four plane forming units 21a, 21b, 21c and 21d, and four
edge forming units 22a, 22b, 22c and 22d.
[0094] The press die 1 for bending-curling simultaneous forming
enables the finished product to be ejected in a single cycle. To
this end, the ejection of the product is performed at the four
plane forming units 21a, 21b, 21c and 21d, and then performed at
the four edge forming units 22a, 22b, 22c and 22d.
[0095] That is because the moving apparatus 30 with respect to the
four edge forming units 22a, 22b, 22c and 22d may be able to move
after the movement of the moving apparatus 30 with respect to the
four plane forming units 21a, 21b, 21c and 21d.
[0096] Although a few embodiments of the present disclosure have
been shown and described, it would be appreciated by those skilled
in the art that changes may be made in these embodiments without
departing from the principles and spirit of the disclosure, the
scope of which is defined in the claims and their equivalents.
* * * * *