CN101670402A - Pre-bending device of pressing die - Google Patents
Pre-bending device of pressing die Download PDFInfo
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- CN101670402A CN101670402A CN200910018392A CN200910018392A CN101670402A CN 101670402 A CN101670402 A CN 101670402A CN 200910018392 A CN200910018392 A CN 200910018392A CN 200910018392 A CN200910018392 A CN 200910018392A CN 101670402 A CN101670402 A CN 101670402A
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- bearing pin
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Abstract
The invention discloses a pre-bending device of a pressing die, belonging a pre-tapping device and mainly comprising a driving mechanism, an executing mechanism and a pre-bending die. The driving mechanism comprises a first driving arm and a second driving arm; the executing mechanism comprises a four-link mechanism; the pre-bending die is fixedly arranged on the executing mechanism; and under theaction of the driving mechanism, the pre-bending die sequentially realizes feeding process step, pre-bending process step, pre-bending return and feeding return. The invention solves the technical problems that the pre-bending die in a pressing die intervenes with a working part of a lower die, and internal and external plates cannot realize the pre-tapping, has reasonable structural design and is widely applied in a pressing die of a vehicle covering piece.
Description
Technical field
The present invention relates to a kind of pre-Wrapping apparatus, relate in particular to a kind of pre-Wrapping apparatus that is applied in the vehicle cladding member pressing mold.
Background technology
The pre-bending mechanism that often sees is peace row pre-bending mechanism of rotation pre-bending mechanism.Rotation pre-bending mechanism is the mechanical device around an axle rotation, and is relatively simple for structure, realizes rotatablely moving of die for fisrt forming; Parallel pre-bending mechanism then is a kind of quadric chain, and this kind device uses more in pressing mold, realizes the parallel motion of die for fisrt forming.
The pre-bound edge of vehicle cladding member, for example when carrying out to the inside and outside plate bound edge of car door, run into crooked king-sized car door sometimes, such as tailgate, its top circular arc is precipitous especially, and to be exactly the outside plate product edge be bent to the processes of 40 degree from 90 degree to the process of pre-bending, if with the pre-bending mechanism of routine, die for fisrt forming can be interfered with the counterdie working portion in motion process, can't realize the pre-bound edge of car door.
Summary of the invention
Technical problem to be solved by this invention is: a kind of pre-bending device of pressing die is provided, and to solve die for fisrt forming meeting and the interference of counterdie working portion in motion process in the pressing mold, inside and outside plate can't be realized the technical problem of pre-bound edge.
For solving the problems of the technologies described above, technical scheme of the present invention is: pre-bending device of pressing die, comprise driving mechanism, and described driving mechanism is fixedly installed on the upper bolster of pressing mold; Executing agency, described executing agency are fixedly installed on the die shoe of pressing mold; Die for fisrt forming, described die for fisrt forming are fixedly installed in the described executing agency;
Described executing agency comprises a quadric chain and a connecting rod base, described quadric chain comprises first connecting rod, second connecting rod, third connecting rod and the 4th connecting rod, described first connecting rod and connecting rod base are hinged by first bearing pin, and described second connecting rod and first connecting rod are hinged by second bearing pin; Described third connecting rod and second connecting rod are hinged by the 3rd bearing pin, described the 4th connecting rod and third connecting rod are hinged by the 4th bearing pin, described first connecting rod and the 4th connecting rod are hinged by the 5th bearing pin, be respectively equipped with a protuberance on described first connecting rod and the second connecting rod, when described two protuberances are fitted, be used to limit the swing in opposite directions of first connecting rod and second connecting rod; Described die for fisrt forming is fixed on the second connecting rod; Be provided with extension spring between described quadric chain and the connecting rod base; Described connecting rod base is provided with first connecting rod forward swing locating part, is used to limit first connecting rod around the extreme position of first bearing pin to the workpiece swing;
Described driving mechanism comprises the driving seat that is used to connect described upper bolster; First actuating arm, described first actuating arm is fixedly installed on the described driving seat, described first actuating arm is provided with first drive block, described first drive block is provided with first chain of command of the described first connecting rod of control around described first bearing pin swing, and described first chain of command is used for fitting with second bearing pin; Second actuating arm, described second actuating arm is fixedly installed on the described driving seat, described second actuating arm is provided with second drive block, described second drive block is provided with second chain of command of the described second connecting rod of control around described second bearing pin swing, and described second chain of command is used for fitting with the 4th bearing pin.
Wherein, also be provided with first connecting rod backswing locating part on the described connecting rod base, be used to limit first connecting rod leaves the workpiece swing around first bearing pin extreme position.
Wherein, also be provided with second connecting rod forward swing locating part on the described connecting rod base, be used to limit second connecting rod around the extreme position of second bearing pin to the workpiece swing.
Wherein, described first chain of command comprises up section of first chain of command, first chain of command keep straight on descending section of section and first chain of command.
Wherein, be arranged with first roller that is used for described first chain of command applying on described second bearing pin.
Wherein, described second chain of command comprises up section of second chain of command, second chain of command keep straight on descending section of section and second chain of command.
Wherein, be arranged with second roller that is used for described second chain of command applying on described the 4th bearing pin.
Wherein, described driving mechanism also comprises the 3rd actuating arm; described the 3rd actuating arm is fixedly installed on the described driving seat, and described the 3rd actuating arm is provided with the 3rd chain of command that is used to force described die for fisrt forming backhaul, and described the 3rd chain of command and described the 4th bearing pin are fitted.
Owing to adopted technique scheme, the invention has the beneficial effects as follows: because driving mechanism is provided with two actuating arms, two actuating arms are taken up in order of priority in the course of the work and are contacted two rollers, make die for fisrt forming under the drive of executing agency, successively rotate along two axles, in in pressing mold, just can well realizing like this, the pre-bending of outside plate bound edge, because there is the rotation of leaving workpiece in executing agency, make die for fisrt forming that the spinning movement of " new line " be arranged after pre-bending, and be provided with stopping means, in whole pressing process, die for fisrt forming can not interfered with the counterdie working portion.Connect because executing agency is provided with spring, make executing agency after finishing pre-bending, can lean on the active force of extension spring to make the die for fisrt forming backhaul, leave the working region, do not interfere subsequent processing.Owing to designed the 3rd actuating arm of forcing the backhaul effect, can make die for fisrt forming after finishing pre-bending, force backhaul, avoided making die for fisrt forming backhaul to cause equipment fault, improved the security performance that pre-bending device of pressing die uses owing to extension spring loses efficacy.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the initial station schematic diagram of the embodiment of the invention;
Fig. 2 is the carry work step schematic diagram of the embodiment of the invention;
Fig. 3 is that the carry work step of the embodiment of the invention finishes schematic diagram;
Fig. 4 is that the pre-bending work step of the embodiment of the invention finishes schematic diagram;
Fig. 5 is that the pre-bending return of the embodiment of the invention finishes schematic diagram;
Fig. 6 is that the carry return of the embodiment of the invention finishes schematic diagram;
Among the figure: 1, inner panel, 2, die for fisrt forming, 3, second bearing pin, 4, first roller, 5, second connecting rod, 6, first drive block, 7, first actuating arm, 8, drive seat, 9, the 3rd actuating arm, 10, second actuating arm, 11, second drive block, 12, the 3rd bearing pin, 13, protuberance, 14, first connecting rod, 15, third connecting rod, 16, the 4th bearing pin, 17, second roller, 18, extension spring, 19, the 4th connecting rod, 20, the 5th bearing pin, 21, first connecting rod backswing locating part, 22, connecting rod base, 23, first bearing pin, 24, outside plate, 25, counterdie, 26, second connecting rod forward swing locating part, 27, first connecting rod forward swing locating part.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of pre-bending device of pressing die comprises driving mechanism, and described driving mechanism is fixedly installed on the upper bolster of pressing mold; Executing agency, described executing agency are fixedly installed on the die shoe of pressing mold; Die for fisrt forming 2, described die for fisrt forming 2 is fixedly installed in the described executing agency;
Described executing agency comprises a quadric chain and a connecting rod base 22, described quadric chain comprises first connecting rod 14, second connecting rod 5, third connecting rod 15 and the 4th connecting rod 19, described first connecting rod 14 is hinged by first bearing pin 23 with connecting rod base 22, and described second connecting rod 5 is hinged by second bearing pin 3 with first connecting rod 14; Described third connecting rod 15 is hinged by the 3rd bearing pin 12 with second connecting rod 5, described the 4th connecting rod 19 is hinged by the 4th bearing pin 16 with third connecting rod 15, described first connecting rod 14 and the 4th connecting rod 19 are hinged by the 5th bearing pin 20, be respectively equipped with a protuberance 13 on described first connecting rod 14 and the second connecting rod 5, protuberance 13 working faces are the inclined-plane, become 4 degree angles with the plane that axis constitutes of first bearing pin, 23 axis and the 5th bearing pin 20, when described two protuberances 13 are fitted, be used to limit the swing in opposite directions of first connecting rod 14 and second connecting rod 5; Described die for fisrt forming 2 is fixed on the second connecting rod 5; Be provided with extension spring 18 between described quadric chain and the connecting rod base 22; Described connecting rod base 22 is provided with first connecting rod forward swing locating part 27, be used to limit first connecting rod 14 around the extreme position of first bearing pin 23 to the workpiece swing, the working face of first connecting rod forward swing locating part 27 is the inclined-plane, becomes 9 degree angles with the bottom surface of connecting rod base 22;
Described driving mechanism comprises the driving seat 8 that is used to connect described upper bolster; First actuating arm 7, described first actuating arm 7 is fixedly installed on the described driving seat 8, described first actuating arm 7 is provided with first drive block 6, described first drive block 6 is provided with first chain of command of the described first connecting rod 14 of control around 23 swings of described first bearing pin, and described first chain of command is used for fitting with second bearing pin 3; Second actuating arm 10, described second actuating arm 10 is fixedly installed on the described driving seat 8, described second actuating arm 10 is provided with second drive block 11, described second drive block 11 is provided with second chain of command of the described second connecting rod 5 of control around 3 swings of described second bearing pin, and described second chain of command is used for fitting with the 4th bearing pin 16.
Also be provided with first connecting rod backswing locating part 21 on the described connecting rod base 22, be used to limit first connecting rod 14 leaves the workpiece swing around first bearing pin 23 extreme position.
Also be provided with second connecting rod forward swing locating part 26 on the described connecting rod base 22, be used to limit second connecting rod 5 around the extreme position of second bearing pin 3 to the workpiece swing.
Described first chain of command comprises up section of first chain of command, first chain of command keep straight on descending section of section and first chain of command.Up section of first chain of command for first connecting rod 14 when first connecting rod backswing locating part 21 swings to first connecting rod forward swing locating part 27, first roller 4 formed track on first drive block 6; First chain of command keep straight on section be second connecting rod 5 when second bearing pin 3 is swung, first roller 4 is formed track on first drive block 6; Descending section of first chain of command for first connecting rod 14 when first connecting rod forward swing locating part 27 swings to first connecting rod backswing locating part 21, first roller 4 is formed track on first drive block 6.
Be arranged with first roller 4 that is used for described first chain of command applying on described second bearing pin 3.
Described second chain of command comprises up section of second chain of command, second chain of command keep straight on descending section of section and second chain of command.Up section of second chain of command for second connecting rod 5 when protuberance 13 swings to second connecting rod forward swing locating part 26, second roller 17 formed track on second drive block 11; First chain of command keep straight on section be die for fisrt forming 2 on workpiece during the pre-bending maintenance, second roller 17 is formed track on second drive block 11; Descending section of second chain of command for second connecting rod 5 when second connecting rod forward swing locating part 26 swings to protuberance 13, second roller 17 is formed track on second drive block 11.
Be arranged with second roller 17 that is used for described second chain of command applying on described the 4th bearing pin 16.
Described driving mechanism also comprises the 3rd actuating arm 9, described the 3rd actuating arm 9 is fixedly installed on the described driving seat 8, described the 3rd actuating arm 9 is provided with the 3rd chain of command that is used to force described die for fisrt forming 2 backhauls, and described the 3rd chain of command and described the 4th bearing pin 16 are fitted.
Its course of work is as follows:
Under the effect of described driving mechanism, make described die for fisrt forming 2 orders realize carry work step, pre-bending work step, pre-bending return and carry return.
As shown in Figure 1, initial station.Driving mechanism is fixed on the upper bolster, and executing agency is fixed on the die shoe, and counterdie 25 is fixed on the die shoe, and just the inner panel 1 and the outside plate 24 of one-step forming are placed on the counterdie 25, and the limit of outside plate 24 has become 90 degree states, and inner panel 1 is fitted in the inboard of outside plate 24.Under the effect of extension spring 18, first connecting rod backswing locating part 21 and protuberance 13 limit first connecting rod 14 and second connecting rod 5 respectively, and die for fisrt forming 2 is in " new line " state.
As shown in Figure 2, carry work step, the action of " bowing " for the first time.Mould assembling action begins, upper bolster moves downward, it is close to drive the executing agency of driving mechanism on die shoe, be installed on first actuating arm 7 first drive block 6 at first be installed in second bearing pin 3 on first roller 4 contact, along with first actuating arm 7 continues to move down, first roller 4 promotes quadric chain and rotates around first bearing pin 23 along up section rolling of first chain of command of first drive block 6, makes quadric chain move to counterdie 25 simultaneously.This moment, first connecting rod 14 left first connecting rod backswing locating part 21, and is close to first connecting rod forward swing locating part 27, die for fisrt forming 2 beginning carry work steps.
As shown in Figure 3, the carry work step finishes.Driving mechanism continues to move downward, and when first roller 4 moved to first chain of command craspedodrome section of first drive block 6, the carry work step of die for fisrt forming 2 finished, and die for fisrt forming 2 arrives counterdies 25 coboundaries, contacts with the right-angle side of outside plate 24, and pre-bending preparation is finished.At this moment, first connecting rod 14 is fitted on the working face of first connecting rod forward swing locating part 27, and quadric chain has rotated 9 degree around first bearing pin 23.
The pre-bending work step, the action of " bowing " for the second time.Driving mechanism continues to move downward, up section of second chain of command that second roller 17 is fitted and is installed in second drive block 11 on second actuating arm 10, along with the up section rolling of second chain of command of second roller 17 at second drive block 11, second connecting rod 5 begins to rotate around second bearing pin 3 under third connecting rod 15 impetuses, second connecting rod 5 leaves protuberance 13, this moment, the pre-bending work step of die for fisrt forming 2 began, and the right-angle side of outside plate 24 begins to inner panel 1 bending under the effect of die for fisrt forming 2.
As shown in Figure 4, the pre-bending work step finishes.Driving mechanism continues to move downward, and when second roller 17 moved to second chain of command craspedodrome section of second drive block 11, the pre-bending work step of die for fisrt forming 2 finished.At this moment, second connecting rod 5 is fitted on the working face of second connecting rod forward swing locating part 26, and second connecting rod 5 has rotated 4 degree around second bearing pin 3, and die for fisrt forming 2 arrives the lower boundary of counterdie 25, and the right-angle side of outside plate 24 is curved 40 degree.
As shown in Figure 5, the pre-bending return finishes, and finishes " new line " action for the first time.Driving mechanism continues to move downward, when second roller 17 moves to descending section of second chain of command of second drive block 11, first of die for fisrt forming 2 " new line " action beginning, along with the descending section rolling of second chain of command of second roller 17 at second drive block 11, under the acting in conjunction of extension spring 18 and the 3rd actuating arm 9, second connecting rod 5 begins around 3 revolutions of second bearing pin, second connecting rod 5 leaves second connecting rod forward swing locating part 26, when second connecting rod 5 is fitted on the protuberance 13, the pre-bending return of die for fisrt forming 2 finishes, second roller 17 is in descending section end of rolling of second chain of command of second drive block 11, second connecting rod 5 has rotated 4 degree around second bearing pin 3, and first roller 4 arrives descending section original position of first chain of command of first drive block 6.In this process, first roller 4 rolls on first chain of command of first drive block 6 is kept straight on section always.
As shown in Figure 6, the carry return finishes, and finishes " new line " action for the second time.Driving mechanism continues to move downward, under the acting in conjunction of extension spring 18 and the 3rd actuating arm 9, first roller 4 is along descending section rolling of first chain of command of first drive block 6, quadric chain begins around 23 revolutions of first bearing pin, second connecting rod 5 leaves first connecting rod forward swing locating part 27, the action beginning second time of die for fisrt forming 2 " new line ".When first connecting rod 14 is fitted on the working face of first connecting rod backswing locating part 21, second " new line " release of die for fisrt forming 2.At this moment, executing agency begins to have rotated 9 degree around first bearing pin 23, and first roller 4 arrives the descending segment boundary of first chain of command of first drive block 6, and mould assembling action finishes.
After the pre-bending release, pre-bound edge operation is finished, next in continuing to realize by other auxiliary bodies again, the bound edge of outside plate, the outside plate 24 that is pre-bent to 40 degree is fitted with inner panel 1, bound edge finishes the back die sinking, driving mechanism moves upward under the drive of upper bolster, under the pulling force effect of extension spring 18, first roller 4 and second roller 17 successively roll along first chain of command of first drive block 6 and second chain of command of second drive block 11, realize opposite with mould assembling action roll to, die for fisrt forming is realized twice " bowing " and twice " new line " action again, this twice " bowing " and twice " new line " action when difference is the driving mechanism backhaul all is an empty action, not with the contact of the workpiece on the counterdie 25.When driving mechanism leaves executing agency, under the effect of extension spring 18, executing agency returns to the initial station state before the matched moulds.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (8)
1. pre-bending device of pressing die comprises
Driving mechanism, described driving mechanism are fixedly installed on the upper bolster of pressing mold;
Executing agency, described executing agency are fixedly installed on the die shoe of pressing mold;
Die for fisrt forming, described die for fisrt forming are fixedly installed in the described executing agency; It is characterized in that:
Described executing agency comprises a quadric chain and a connecting rod base, described quadric chain comprises first connecting rod, second connecting rod, third connecting rod and the 4th connecting rod, described first connecting rod and connecting rod base are hinged by first bearing pin, and described second connecting rod and first connecting rod are hinged by second bearing pin; Described third connecting rod and second connecting rod are hinged by the 3rd bearing pin, described the 4th connecting rod and third connecting rod are hinged by the 4th bearing pin, described first connecting rod and the 4th connecting rod are hinged by the 5th bearing pin, be respectively equipped with a protuberance on described first connecting rod and the second connecting rod, when described two protuberances are fitted, be used to limit the swing in opposite directions of first connecting rod and second connecting rod; Described die for fisrt forming is fixed on the second connecting rod; Be provided with extension spring between described quadric chain and the connecting rod base; Described connecting rod base is provided with first connecting rod forward swing locating part, is used to limit first connecting rod around the extreme position of first bearing pin to the workpiece swing;
Described driving mechanism comprises
Be used to connect the driving seat of described upper bolster;
First actuating arm, described first actuating arm is fixedly installed on the described driving seat, described first actuating arm is provided with first drive block, described first drive block is provided with first chain of command of the described first connecting rod of control around described first bearing pin swing, and described first chain of command is used for fitting with second bearing pin;
Second actuating arm, described second actuating arm is fixedly installed on the described driving seat, described second actuating arm is provided with second drive block, described second drive block is provided with second chain of command of the described second connecting rod of control around described second bearing pin swing, and described second chain of command is used for fitting with the 4th bearing pin.
2. pre-bending device of pressing die as claimed in claim 1 is characterized in that: also be provided with first connecting rod backswing locating part on the described connecting rod base, be used to limit first connecting rod leaves the workpiece swing around first bearing pin extreme position.
3. pre-bending device of pressing die as claimed in claim 1 is characterized in that: also be provided with second connecting rod forward swing locating part on the described connecting rod base, be used to limit second connecting rod around the extreme position of second bearing pin to the workpiece swing.
4. as claim 1 or 2 or 3 described pre-bending device of pressing die, it is characterized in that: described first chain of command comprises up section of first chain of command, first chain of command keep straight on descending section of section and first chain of command.
5. pre-bending device of pressing die as claimed in claim 4 is characterized in that: be arranged with first roller that is used for described first chain of command applying on described second bearing pin.
6. pre-bending device of pressing die as claimed in claim 5 is characterized in that: described second chain of command comprises up section of second chain of command, second chain of command keep straight on descending section of section and second chain of command.
7. pre-bending device of pressing die as claimed in claim 6 is characterized in that: be arranged with second roller that is used for described second chain of command applying on described the 4th bearing pin.
8. pre-bending device of pressing die as claimed in claim 1 is characterized in that: described driving mechanism also comprises
The 3rd actuating arm, described the 3rd actuating arm are fixedly installed on the described driving seat, and described the 3rd actuating arm is provided with the 3rd chain of command that is used to force described die for fisrt forming backhaul, and described the 3rd chain of command and described the 4th bearing pin are fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910018392A CN101670402A (en) | 2009-09-23 | 2009-09-23 | Pre-bending device of pressing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910018392A CN101670402A (en) | 2009-09-23 | 2009-09-23 | Pre-bending device of pressing die |
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| Publication Number | Publication Date |
|---|---|
| CN101670402A true CN101670402A (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910018392A Pending CN101670402A (en) | 2009-09-23 | 2009-09-23 | Pre-bending device of pressing die |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218460A (en) * | 2011-07-29 | 2011-10-19 | 无锡洲翔重工科技有限公司 | Multifunctional plate rolling machine |
| CN102319815A (en) * | 2011-06-15 | 2012-01-18 | 山东潍坊福田模具有限责任公司 | Chain-type double-acting press-fit mechanism for press-fit die |
| CN102847826A (en) * | 2012-09-19 | 2013-01-02 | 奇瑞汽车股份有限公司 | Swing arm type press fit mechanism |
| CN104174770A (en) * | 2014-07-22 | 2014-12-03 | 奇瑞汽车股份有限公司 | Buckled rotary slanting wedge |
| CN107597988A (en) * | 2017-09-07 | 2018-01-19 | 江铃汽车股份有限公司 | A kind of pre-springing cutter and Wrapping apparatus |
| CN108687196A (en) * | 2018-05-02 | 2018-10-23 | 奇瑞汽车股份有限公司 | Integrative mechanism of borduring of preflex pressfitting |
| CN114798923A (en) * | 2022-04-11 | 2022-07-29 | 俞永富 | Stamping die for plate production and use method thereof |
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2009
- 2009-09-23 CN CN200910018392A patent/CN101670402A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319815A (en) * | 2011-06-15 | 2012-01-18 | 山东潍坊福田模具有限责任公司 | Chain-type double-acting press-fit mechanism for press-fit die |
| CN102218460A (en) * | 2011-07-29 | 2011-10-19 | 无锡洲翔重工科技有限公司 | Multifunctional plate rolling machine |
| CN102218460B (en) * | 2011-07-29 | 2013-03-13 | 无锡洲翔重工科技有限公司 | Multifunctional plate rolling machine |
| CN102847826A (en) * | 2012-09-19 | 2013-01-02 | 奇瑞汽车股份有限公司 | Swing arm type press fit mechanism |
| CN102847826B (en) * | 2012-09-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | A kind of swing arm laminating mechanism |
| CN104174770A (en) * | 2014-07-22 | 2014-12-03 | 奇瑞汽车股份有限公司 | Buckled rotary slanting wedge |
| CN107597988A (en) * | 2017-09-07 | 2018-01-19 | 江铃汽车股份有限公司 | A kind of pre-springing cutter and Wrapping apparatus |
| CN108687196A (en) * | 2018-05-02 | 2018-10-23 | 奇瑞汽车股份有限公司 | Integrative mechanism of borduring of preflex pressfitting |
| CN114798923A (en) * | 2022-04-11 | 2022-07-29 | 俞永富 | Stamping die for plate production and use method thereof |
| CN114798923B (en) * | 2022-04-11 | 2024-10-01 | 张家港市洛亚模具有限公司 | Stamping die for plate production and use method thereof |
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Open date: 20100317 |