CN104275382A - High-precision stamping method for anti-tripping waster material stamping die - Google Patents

High-precision stamping method for anti-tripping waster material stamping die Download PDF

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Publication number
CN104275382A
CN104275382A CN201410457373.1A CN201410457373A CN104275382A CN 104275382 A CN104275382 A CN 104275382A CN 201410457373 A CN201410457373 A CN 201410457373A CN 104275382 A CN104275382 A CN 104275382A
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CN
China
Prior art keywords
stamping
knife
stamping parts
punching pin
waste material
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Granted
Application number
CN201410457373.1A
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Chinese (zh)
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CN104275382B (en
Inventor
王娟
姚和中
其他发明人请求不公开姓名
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Shenzhen giant precision mould Co., Ltd.
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CHUZHOU YALI MOULD EQUIPMENT Co Ltd
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Priority to CN201410457373.1A priority Critical patent/CN104275382B/en
Publication of CN104275382A publication Critical patent/CN104275382A/en
Application granted granted Critical
Publication of CN104275382B publication Critical patent/CN104275382B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003Positioning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14Dies

Abstract

The invention relates to a high-precision stamping method for an anti-tripping waster material stamping die. A stamping cutter edge is provided with an inverse frustum-shaped stamping section. The method is characterized in that a stamping component compressing and limiting mechanism (A) which acts on a stamping component (10) is arranged at each of an inlet and an outlet of the anti-tripping waster material stamping die. Due to the fact that one stamping component compressing and limiting mechanism is arranged at each of the inlet and the outlet of the anti-tripping waster material stamping die and can act on the stamping component in both the horizontal direction and the vertical direction, the stamping component can be well limited and fixed, and a stamped product is higher in precision and quality.

Description

A kind of high accuracy anti-tripping waste diel process for stamping
Technical field
The present invention relates to a kind of anti-tripping waste diel process for stamping, especially a kind of anti-tripping waste diel process for stamping that can improve punching precision.
Background technology
Diel is a kind of conventional manufacturing equipment, may be used for the punch forming etc. of metalwork.But existing diel exists the situation of jump-scrap, also namely waste material is jumped out above counterdie.When continuous punching, jump-scrap easily causes burn failure.
The diel of Chinese patent anti-tripping waste; patent application publication CN104028616A; although solve the problem that jump-scrap easily causes burn failure; but himself also comprises guide post 9 due to patrix; guide post 9 is fixedly connected with upper bolster 1; and coordinate with de-material component slippage, counterdie is also provided with the guide pillar hole 19 of matching with guide post 9.Particularly, the lower end of guide post 9 stretches out in outside de-material assembly, and lower bolster 14, die shoe 12, lower bolster 13 are run through in guide pillar hole 19, and during punching press, guide post 9 is first inserted in guide pillar hole 19, plays correcting effect, as shown in Figure 1 to patrix.
Thus, arranging of lead can on the impact of stamping parts generation, and need stamping parts to exist corresponding current hole, this current bore dia is greater than the diameter of lead usually, and stamping parts can be subjected to displacement at punching course, has influence on punching precision.If lead is not through stamping parts, the skew in stamping parts very easily occurred level direction especially in punching course, and produce error, cannot punching precision be reached.
Inventor thinks, the guide effect of this lead is its secondary role, because the technical problem of centering can be solved by other more simple modes between existing diel upper/lower die, and at mould inside without the need to arranging lead.In the diel of above-mentioned Chinese patent anti-tripping waste, the Main Function of lead still carries out spacing and fixing in fact to stamping parts, and avoid in punching course, stamping parts is subjected to displacement and occurs error.
Summary of the invention
The present invention devises a kind of high accuracy anti-tripping waste diel process for stamping, its technical problem solved is that arranging of lead can on the impact of stamping parts generation, need stamping parts to exist corresponding current hole, this current bore dia is greater than the diameter of lead usually, stamping parts can be subjected to displacement at punching course, has influence on punching precision.If lead is not through stamping parts, the skew in stamping parts very easily occurred level direction especially in punching course, and produce error, cannot punching precision be reached.
In order to solve the technical problem of above-mentioned existence, present invention employs following scheme:
The diel of a kind of high accuracy anti-tripping waste, it is characterized in that: comprising can the upper die and lower die of relative movement up and down, described patrix comprises upper bolster (1), de-material assembly, flexible member, installing plate and punching pin, connected by Connection Element between described upper bolster (1) and described de-material assembly, and can relative movement up and down between described upper bolster and de-material assembly, described installing plate is arranged between described upper bolster and described de-material assembly, and be fixedly connected with described upper bolster, described flexible member is connected with described upper bolster and can compresses described de-material assembly along the vertical direction, described punching pin can pass described de-material assembly up or down, and be connected with described installing plate, described counterdie is provided with the stamping-out edge of a knife matched with described punching pin and the waste channel be communicated with the described stamping-out edge of a knife, the described stamping-out edge of a knife has the stamping-out section in inversed taper platform shape, described counterdie comprises lower bolster (14), die shoe (12), lower bolster (13) and the counterdie edge of a knife enter block (15), described lower bolster (13) is fixedly mounted on the top of described die shoe (12), described lower bolster (14) is fixedly mounted on the top of described lower bolster (13), the described counterdie edge of a knife enters block (15) and is arranged in described lower bolster (14), the described stamping-out edge of a knife (11) is opened in the described counterdie edge of a knife and enters on block (15), the described stamping-out edge of a knife (11) also comprises the waste material section be positioned at below described stamping-out section, described waste material section is taper type, and be communicated with described waste channel (17), described waste channel (17) is opened on described die shoe (12) and lower bolster (13), it is characterized in that: one stamping parts compression position-limit mechanism (A) is set respectively in anti-tripping waste diel import and outlet and acts on stamping parts (10).
Further, described stamping parts compresses position-limit mechanism (A) and comprises cylinder (33), stamping parts clamping lever (35), backstay (39) and lever dolly (37), cylinder (33) one end is fixed on die shoe (12) lateral wall by cylinder stiff end (32), cylinder (33) other end is connected with one end of stamping parts clamping lever (35) by cylinder connecting screw rod (34), stamping parts clamping lever (35) is connected with lever dolly (37) by pivot bolt (36), lever dolly (37) is fixed on die shoe (12) end face, the other end of stamping parts clamping lever (35) is stamping parts compressed part and has U-shaped current groove (351), backstay (39) one end is fixed on die shoe (31) end face, backstay (39) other end inserts in described U-shaped current groove (351), backstay (39) is through the locating hole on stamping parts (10).
Further, described stamping parts compresses the both sides that position-limit mechanism lays respectively at stamping parts (10).
Further, in order to adapt to the height of stamping parts (B), the upper cover of backstay (39) has a pad bit slice (31), and the stamping parts (B) of differing heights is placed on the pad bit slice (31) of different-thickness.
A kind of high accuracy anti-tripping waste diel process for stamping, comprises the following steps:
Step 1, first stamping parts (10) to be placed between upper die and lower die and to compress position-limit mechanism (A) by stamping parts and stamping parts front and back end is carried out spacing and fixing;
Step 2, upper bolster (1) press down under the effect of punch press, and de-material assembly presses down thereupon; Along with upper bolster (1) continue press down, stamping parts (10) is pressed on lower bolster (14) by stripper plate 6;
Step 3, upper bolster (1) continue to press down, and flexible member (8) starts compression, and punching pin (6) stretches out in stripper plate (6) outward, and matches with the stamping-out edge of a knife (11), carries out stamping-out to stamping parts (10), and the shape of stamping-out is the shape of punching pin (7); Punching pin (7), in the process moved downward, first to stamping parts (10) stamping-out, by the effect of the stamping-out edge of a knife (11), forms waste material (16); In this process, because the stamping-out edge of a knife (11) is inversed taper platform shape, so when punching pin (7) drives waste material (16) to move downward, the stamping-out edge of a knife (11) can extrude the periphery of waste material (16), make it produce deformation, its shape then can change with the stamping-out edge of a knife (11);
Step 4, when patrix completely closed, namely when clamping plate (4) and sub-baffle plate (5) are fitted completely, patrix moves downward end, meanwhile punching pin (7) motion terminates, the waste material (16) that stamping-out stamping parts (10) is formed by punching pin (7) drives the end portion of the stamping-out section of the stamping-out edge of a knife (11), the narrowest part that the waste material (16) that stamping-out stamping parts (10) is formed is punched the edge of a knife (11) is blocked, allow waste material (16) the stamping-out edge of a knife (11) cannot be popped up by the effect of self, so can prevent its jump-scrap;
Step 5, patrix moves upward under the drive of punch press, first be punching pin (7), upper bolster (1), upper padding plate (3) and clamping plate (4) move upward, flexible member (8) resets, when punching pin (7) returns to position suitable in stripper plate 6, under the drive of Connection Element (2), sub-baffle plate (5) and stripper plate (6) also start to move upward, when punch press drives patrix to move to upper prescribing a time limit, stamping parts (10) is compressed position-limit mechanism (A) dismounting from stamping parts, thus a stamping-out work step completes, so motion makes mould continuous operation repeatedly.
This high accuracy anti-tripping waste diel process for stamping has following beneficial effect:
(1) the present invention compresses position-limit mechanism owing to arranging a stamping parts respectively in anti-tripping waste diel import and outlet, this stamping parts compresses position-limit mechanism all can act on stamping parts with vertical direction in the horizontal direction, stamping parts is obtained well spacing and fixing, thus the precision quality of punching press products obtained therefrom is higher.
(2) anti-tripping waste diel provided by the invention, by the stamping-out section of stamping-out otch is set to inversed taper platform shape, effectively can prevents waste material from jumping material, thus prevent burn failure.
Accompanying drawing explanation
Fig. 1: the structural representation of existing anti-tripping waste diel;
Fig. 2: the structural representation of high accuracy anti-tripping waste of the present invention diel;
Fig. 3: the counterdie edge of a knife of high accuracy anti-tripping waste of the present invention diel enters block structure schematic diagram;
Fig. 4: the stamping parts of high accuracy anti-tripping waste of the present invention diel compresses position-limit mechanism structural representation;
The partial top view of Fig. 5: Fig. 4.
Description of reference numerals:
1-upper bolster; 2-Connection Element; 3-upper padding plate; 4-clamping plate; 5-sub-baffle plate; 6-stripper plate; 7-punching pin; 8-flexible member; 10-stamping parts; 11-stamping-out edge of a knife; 12-die shoe; 13-lower bolster; 14-lower bolster; 15-counterdie edge of a knife enters block; 16-waste material; 17-waste channel.
A-stamping parts compresses position-limit mechanism; 31-pad bit slice; 32-cylinder stiff end; 33-cylinder; 34-cylinder connecting screw rod; 35-stamping parts clamping lever; 351-U-shaped current groove; 36-pivot bolt; 37-lever dolly; 38-resilient protection part; 39-backstay.
Detailed description of the invention
Below in conjunction with Fig. 2 to Fig. 5, the present invention will be further described:
As shown in Figure 2, the invention provides the diel of a kind of high accuracy anti-tripping waste, it comprises can the upper die and lower die of relative movement up and down.
Patrix comprises upper bolster 1, de-material assembly, flexible member 8, installing plate and punching pin 7.Connected by Connection Element 2 between upper bolster 1 and de-material assembly, and can relative movement up and down between upper bolster 1 and de-material assembly.De-material assembly comprises stripper plate 6 and sub-baffle plate 5, and stripper plate 6 is fixedly connected on the below of sub-baffle plate 5 for binder.Connection Element 2 is bolt, and its one end is connected with upper bolster 1, and the other end is connected with sub-baffle plate 5 through installing plate.
Installing plate is arranged on upper bolster 1 and takes off expects between assembly, and is fixedly connected with upper bolster 1.Particularly, installing plate comprises upper padding plate 3 and clamping plate 4, and the upside of upper padding plate 3 is fixedly connected with upper bolster 1, and downside is fixedly connected with clamping plate 4.
Flexible member 8 is connected with upper bolster 1 and can compresses along the vertical direction to take off expects assembly.Particularly, flexible member 8 is through installing plate, and its one end is fixedly connected with upper bolster 1, and the other end is pressed on the top of sub-baffle plate 5.Flexible member 8 can be compressive state always.
Punching pin 7 up or down through de-material assembly, and can be connected with installing plate, for rushing material.Specifically, the upper end of punching pin 7, through clamping plate 4, is fixedly connected with upper padding plate 3.The lower end of punching pin 7 then through stripper plate 6 and sub-baffle plate 5, and can be stretched out downwards from stripper plate 6.
Counterdie is provided with the stamping-out edge of a knife 11 matched with punching pin 7 and the waste channel 17 be communicated with the stamping-out edge of a knife 11.The stamping-out edge of a knife 11 for matching incompatible shaped article with punching pin 7, the waste material 16 that waste channel 17 is formed for discharging stamping-out.Please refer to Fig. 3, the stamping-out edge of a knife 11 has the stamping-out section in inversed taper platform shape, and also namely the lateral dimension (such as radius) of the bottom of stamping-out section is less than the lateral dimension on top.Stamping-out section can be rounding taper type, also can be the platform of falling polygonal pyramid shape.In the present embodiment, stamping-out section is rounding taper type.When stamping-out, the waste material 16 of formation is stuck in the minimum position of the lateral dimension of stamping-out section, can not jump out, this anti-tripping waste diel therefore can be prevented damaged when continuous stamping above counterdie.
Counterdie comprises lower bolster 14, die shoe 12, lower bolster 13 and the counterdie edge of a knife and enters block 15, lower bolster 13 is fixedly mounted on the top of die shoe 12, lower bolster 14 is fixedly mounted on the top of lower bolster 13, and the radius of lower bolster 14 and lower bolster 13 is roughly equal, and is less than the radius of die shoe 12.The counterdie edge of a knife enters block 15 and is arranged in lower bolster 14, and the stamping-out edge of a knife 11 is opened in the counterdie edge of a knife and enters on block 15.Specifically, the counterdie edge of a knife enters block 15 and lower bolster 14 can for removably connecting, so that enter block 15 for the counterdie edge of a knife that different replacement of products is different.Waste channel 17 is opened on die shoe 12 and lower bolster 13, runs through die shoe 12 and lower bolster 13, and the radius of waste channel 17 can be greater than the radius of the stamping-out edge of a knife 11, can be easier to be discharged to make waste material 16.Waste channel 17 is just in time positioned at the below of the stamping-out edge of a knife 11, after waste material 16 is got off from stamping-out on stamping parts 10, can drop in waste channel 17, and then be discharged.
With reference to figure 2, the stamping-out edge of a knife 11 also comprises the waste material section be positioned at below stamping-out section, and waste material section is taper type, and is communicated with waste channel 17, for waste material 16 is expelled to waste channel 17.Because stamping-out section is inversed taper platform shape, and waste material section is taper type, and therefore stamping-out section and waste material section boundary part are lateral dimension (radius) minimum part, and namely waste material 16 is stuck in the boundary part of stamping-out section and waste material section.The tapering of waste material section is greater than the tapering of stamping-out section.
Please refer to Fig. 1, patrix is when free state (i.e. non-punching press state), and installing plate and de-expect to be formed with gap between assembly, the lower end of punching pin 7 is positioned at de-material assembly, is also that the lower end of punching pin 7 is not protruded from the lower surface of stripper plate 6.Patrix, when free state, is formed with gap between clamping plate 4 and sub-baffle plate 5.Flexible member 8 is air spring, such as, can be nitrogen spring.
When this anti-tripping waste diel carries out punching press to stamping parts 10, first being placed on by stamping parts 10 between upper die and lower die and compressing position-limit mechanism A by stamping parts carries out spacing and fixing to stamping parts front and back end, upper bolster 1 presses down under the effect of punch press, and de-material assembly presses down thereupon.Along with upper bolster 1 continue press down, stamping parts 10 is pressed on lower bolster 14 by stripper plate 6.Upper bolster 1 continues to press down, and flexible member 8 starts compression, and punching pin 6 stretches out in outside stripper plate 6, and matches with the stamping-out edge of a knife 11, carries out stamping-out to stamping parts 10, and the shape of stamping-out is the shape of punching pin 7.Punching pin 7, in the process moved downward, first to stamping parts 10 stamping-out, by the effect of the stamping-out edge of a knife 11, forms waste material 16.In this process, because the stamping-out edge of a knife 11 is inversed taper platform shape, so when punching pin 7 drives waste material 16 to move downward, the stamping-out edge of a knife 11 can extrude the periphery of waste material 16, and make it produce deformation, its shape then can change with the stamping-out edge of a knife 11.
When patrix is completely closed, namely when clamping plate 4 and sub-baffle plate 5 are fitted completely, patrix moves downward end, meanwhile punching pin 7 moves and terminates, the waste material 16 that stamping-out stamping parts 10 is formed by punching pin 7 drives the end portion of the stamping-out section of the stamping-out edge of a knife 11, the narrowest part that the waste material 16 that stamping-out stamping parts 10 is formed is punched the edge of a knife 11 is blocked, and allows waste material 16 cannot pop up the stamping-out edge of a knife 11 by the effect of self, so can prevent its jump-scrap.
Then, patrix moves upward under the drive of punch press, first be punching pin 7, upper bolster 1, upper padding plate 3 and clamping plate 4 move upward, flexible member 8 resets, when punching pin 7 returns to position suitable in stripper plate 6, under the drive of Connection Element 2, sub-baffle plate 5 also starts to move upward with stripper plate 6, when punch press drives patrix to move to upper prescribing a time limit, stamping parts 10 is compressed position-limit mechanism A dismounting from stamping parts, thus a stamping-out work step completes, and motion makes mould continuous operation so repeatedly.
Anti-tripping waste diel provided by the invention, by the stamping-out section of stamping-out otch is set to inversed taper platform shape, effectively can prevents waste material from jumping material, thus prevent burn failure.
As shown in Figures 4 and 5, stamping parts compresses position-limit mechanism A and comprises cylinder 33, stamping parts clamping lever 35, backstay 39 and lever dolly 37, cylinder 33 one end is fixed on die shoe 12 sidewall by cylinder stiff end 32, cylinder 33 other end is connected with one end of stamping parts clamping lever 35 by cylinder connecting screw rod 34, stamping parts clamping lever 35 is connected with lever dolly 37 by pivot bolt 36, lever dolly 37 is fixed on die shoe 31 end face, the other end of stamping parts clamping lever 35 is stamping parts compressed part and has U-shaped current groove 351, backstay 39 one end is fixed on die shoe 31 end face, backstay 39 other end inserts in described U-shaped current groove 351, backstay 39 is through the locating hole on stamping parts B.The stamping parts B compressed part outside of stamping parts clamping lever 35 other end is coated with resilient protection part 38.
In order to adapt to the height of stamping parts B, on backstay 39, cover has a pad bit slice 31.
The operation principle that stamping parts compresses position-limit mechanism is: be enclosed within backstay 39 by stamping parts by locating hole on it; Then, start cylinder 33, cylinder 33 promotes cylinder rod and moves upward, cylinder promotes stamping parts clamping lever 35 one end and moves up, stamping parts clamping lever 35 other end moves down, and stamping parts clamping lever 35 is undertaken spacing by U-shaped current groove 351 and makes the stamping parts compressed part of stamping parts clamping lever 35 finally withstand stamping parts 10.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious realization of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.

Claims (1)

1. a high accuracy anti-tripping waste diel process for stamping, comprises the following steps:
Step 1, first stamping parts (10) to be placed between upper die and lower die and to compress position-limit mechanism (A) by stamping parts and stamping parts front and back end is carried out spacing and fixing;
Step 2, upper bolster (1) press down under the effect of punch press, and de-material assembly presses down thereupon; Along with upper bolster (1) continue press down, stamping parts (10) is pressed on lower bolster (14) by stripper plate 6;
Step 3, upper bolster (1) continue to press down, and flexible member (8) starts compression, and punching pin (6) stretches out in stripper plate (6) outward, and matches with the stamping-out edge of a knife (11), carries out stamping-out to stamping parts (10), and the shape of stamping-out is the shape of punching pin (7); Punching pin (7), in the process moved downward, first to stamping parts (10) stamping-out, by the effect of the stamping-out edge of a knife (11), forms waste material (16); In this process, because the stamping-out edge of a knife (11) is inversed taper platform shape, so when punching pin (7) drives waste material (16) to move downward, the stamping-out edge of a knife (11) can extrude the periphery of waste material (16), make it produce deformation, its shape then can change with the stamping-out edge of a knife (11);
Step 4, when patrix completely closed, namely when clamping plate (4) and sub-baffle plate (5) are fitted completely, patrix moves downward end, meanwhile punching pin (7) motion terminates, the waste material (16) that stamping-out stamping parts (10) is formed by punching pin (7) drives the end portion of the stamping-out section of the stamping-out edge of a knife (11), the narrowest part that the waste material (16) that stamping-out stamping parts (10) is formed is punched the edge of a knife (11) is blocked, allow waste material (16) the stamping-out edge of a knife (11) cannot be popped up by the effect of self, so can prevent its jump-scrap;
Step 5, patrix moves upward under the drive of punch press, first be punching pin (7), upper bolster (1), upper padding plate (3) and clamping plate (4) move upward, flexible member (8) resets, when punching pin (7) returns to position suitable in stripper plate 6, under the drive of Connection Element (2), sub-baffle plate (5) and stripper plate (6) also start to move upward, when punch press drives patrix to move to upper prescribing a time limit, stamping parts (10) is compressed position-limit mechanism (A) dismounting from stamping parts, thus a stamping-out work step completes, so motion makes mould continuous operation repeatedly.
CN201410457373.1A 2014-09-10 2014-09-10 A kind of anti-jump-scrap press tool process for stamping of high precision Active CN104275382B (en)

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CN104275382A true CN104275382A (en) 2015-01-14
CN104275382B CN104275382B (en) 2016-06-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107442646A (en) * 2017-08-23 2017-12-08 池州市华伟模具制造有限公司 A kind of high-precision anti-tripping waste diel

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Publication number Priority date Publication date Assignee Title
JP2006102801A (en) * 2004-10-08 2006-04-20 Matsushita Electric Ind Co Ltd Press die and press apparatus
CN201432046Y (en) * 2009-04-17 2010-03-31 奕东电子(常熟)有限公司 Knife edge structure preventing scrap spattering
CN202174170U (en) * 2011-07-14 2012-03-28 惠州永利通金属制品有限公司 Punching die for microporous anti-tripping waste
CN102773334A (en) * 2012-07-24 2012-11-14 苏州吴中经济开发区搏宇模具加工厂 Stamping die for hole sites of rear covers of notebook computer
CN203459504U (en) * 2013-07-25 2014-03-05 苏州华淳精密电子有限公司 Scraps-jumping-prevention stamping die

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006102801A (en) * 2004-10-08 2006-04-20 Matsushita Electric Ind Co Ltd Press die and press apparatus
CN201432046Y (en) * 2009-04-17 2010-03-31 奕东电子(常熟)有限公司 Knife edge structure preventing scrap spattering
CN202174170U (en) * 2011-07-14 2012-03-28 惠州永利通金属制品有限公司 Punching die for microporous anti-tripping waste
CN102773334A (en) * 2012-07-24 2012-11-14 苏州吴中经济开发区搏宇模具加工厂 Stamping die for hole sites of rear covers of notebook computer
CN203459504U (en) * 2013-07-25 2014-03-05 苏州华淳精密电子有限公司 Scraps-jumping-prevention stamping die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107442646A (en) * 2017-08-23 2017-12-08 池州市华伟模具制造有限公司 A kind of high-precision anti-tripping waste diel
CN107442646B (en) * 2017-08-23 2023-12-29 惠特精密器件(上海)有限公司 High-precision scrap-jumping-prevention stamping die

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Inventor after: Peng Junkai

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