CN114798916A - Locking structure for mold material pressing plate to bottom - Google Patents
Locking structure for mold material pressing plate to bottom Download PDFInfo
- Publication number
- CN114798916A CN114798916A CN202210239100.4A CN202210239100A CN114798916A CN 114798916 A CN114798916 A CN 114798916A CN 202210239100 A CN202210239100 A CN 202210239100A CN 114798916 A CN114798916 A CN 114798916A
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- side pin
- groove
- die
- plate
- pressing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a bottom locking structure of a die pressing plate, which comprises a side pin baffle, a side pin and a side pin stroke groove processed on the side wall of the pressing plate, wherein the side pin baffle is fixedly connected with the side pin; the side pin penetrates through a side pin hole in the upper die bottom plate and then is inserted into the side pin stroke groove; the side pin baffle is clamped on the periphery of the side pin and is fixed with the side wall of the upper die bottom plate through screw fixation; the lower end of the side pin stroke groove is provided with a circular counter bore in the depth direction towards the inner side of the side wall of the pressure plate, and the circular counter bore is used for containing the side pin when the upper die bottom plate falls to the bottom so as to lock the upper die bottom plate and the pressure plate to the bottom. The side pin is a double-groove side pin, and two annular grooves I and two annular grooves II with the same specification and size are sequentially machined at the tail of the double-groove side pin. According to the invention, on the premise of not changing the original functions of the side pin and the side pin travel groove, the function of locking the pressure plate to the bottom is added, and the function can expose the insert with problems.
Description
Technical Field
The invention belongs to the technical field of cold stamping dies, relates to a die pressing plate structure, and particularly relates to a bottom locking structure of a die pressing plate.
Background
In the long-term use process of the cold stamping die for the outer cover part of the automobile, the problems of galling, edge breakage and the like often occur to the shaping insert, the cutting edge insert and the flanging insert of the die, and then the extruded part has product defects and is even scrapped. Fig. 1 is a front view of an upper die of a cold stamping die, fig. 2 is a schematic view of an assembly structure of a material pressing plate and an upper die bottom plate in the upper die in the prior art, a side pin stroke groove is formed in the side wall of the material pressing plate, and the upper die bottom plate and the side pin stroke groove can be assembled through a side pin. Due to the obstruction of the die pressing plate, the die repair personnel can hardly maintain the insert on line. Therefore, production can only be interrupted, the die is transferred to a maintenance area to be disassembled and maintained, a large amount of time is wasted, maintenance efficiency and production efficiency are seriously reduced, and maintenance cost and production cost are increased.
Therefore, the side pin stroke groove and the side pin structure of the pressure plate are improved, the bottom locking function of the pressure plate is added on the premise of not changing the original functions of the side pin and the side pin stroke groove, the defective insert can be exposed by the function, the online maintenance and treatment of mold repair personnel are facilitated, a large amount of time for transferring the mold to a maintenance area for maintenance in interrupted production is saved, the maintenance efficiency and the production efficiency are greatly improved, and the maintenance cost and the production cost are reduced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a bottom-to-bottom locking structure of a die pressing plate, which increases the bottom-to-bottom locking function of the pressing plate on the premise of not changing the original functions of a side pin and a side pin travel groove, can expose the problem insert, is convenient for on-line maintenance and treatment of die maintenance personnel, can complete maintenance on an automatic line under the condition of transferring the die to a maintenance area without interrupting production, saves a large amount of maintenance time, greatly improves the maintenance efficiency and the production efficiency, and reduces the maintenance cost and the production cost.
The purpose of the invention is realized by the following technical scheme:
a bottom locking structure of a die pressing plate comprises a side pin baffle, a side pin and a side pin stroke groove machined in the side wall of the pressing plate; the side pin penetrates through a side pin hole in the upper die bottom plate and then is inserted into the side pin stroke groove; the side pin baffle is clamped on the periphery of the side pin and is fixed with the side wall of the upper die bottom plate through screw fixation; the lower end of the side pin stroke groove is provided with a circular counter bore in the depth direction towards the inner side of the side wall of the pressure plate, and the circular counter bore is used for containing the side pin when the upper die bottom plate falls to the bottom so as to lock the upper die bottom plate and the pressure plate to the bottom.
Furthermore, the side pin is a double-groove side pin, and two annular grooves I and two annular grooves II with the same specification and size are sequentially machined at the tail of the double-groove side pin.
Furthermore, the side pin baffle is clamped with the first annular groove, and when the upper die base plate and the material pressing plate are locked to the bottom, the side pin baffle is clamped with the second annular groove.
Preferably, the distance between the first annular groove and the second annular groove of the double-groove side pin is L3132, and L3132 is more than 10 mm.
Preferably, the double slot side pin to side pin travel slot bottom clearance is e34 and (L3132-10mm) > e34> 0.
Further, the upper end of the side pin stroke groove is provided with a section of circular arc section with the radius of R4; the side pin diameter is D3, then D3<2 × R4.
Preferably, the radius of the circular counter bore at the lower end of the side pin stroke groove is R41, D3< 2R 41.
Preferably, the width of the side pin stroke groove is L4, D3< L4, and L4 is more than or equal to 2R 41.
Preferably, the distance between the upper end of the circular counter bore and the upper end of the side pin stroke groove is L441, L441 is greater than 0, and L441 is smaller than the working stroke of the pressure plate.
Preferably, the clearance between the side pin and the bottom surface of the circular counter bore of the side pin stroke groove is e341, and e341> 0.
The working principle of the invention is as follows:
when the upper die base plate descends along with a press sliding block and a lower die conical balance block convex part is contacted with the upper die conical balance block concave part, the upper die conical balance block concave part is fixed on the pressure plate, so that the pressure plate is supported, at the moment, the upper die base plate continues to descend, the pressure plate can be static, meanwhile, the head part of the double-groove side pin slides downwards in the stroke groove of the pressure plate side pin, the nitrogen cylinder at the bottom of the pressure plate is gradually compressed, when the upper die base plate descends to a die bottom dead center, the side pin baffle is inserted into the second groove of the double-groove side pin ring and then pushed inwards together, and when the side pin baffle is attached to the side wall of the upper die base plate, the side pin baffle is fixed on the side wall of the upper die base plate by using the hexagon socket head cap screw. And then, the press sliding block is lifted, the upper die bottom plate is lifted along with the press sliding block, and when the press sliding block is lifted to the upper dead center of the press, the head of the double-groove side pin is contacted with the upper end of the circular counter bore in the stroke groove of the pressure plate side pin, so that the jacking force of the nitrogen cylinder is counteracted. At the moment, the pressure plate is in a bottom locking state, the shaping insert working profile and the cutting edge insert (or flanging insert) working profile are completely exposed, and a mold maintenance worker can quickly maintain the shaping insert working profile and the cutting edge insert (or flanging insert).
After maintenance is finished, the press sliding block moves downwards to the bottom dead center of the die, the inner hexagon screw and the side pin baffle plate are loosened in the same mode, then the double-groove side pin is pulled outwards, the side pin baffle plate is inserted into the double-groove side pin annular groove I when the double-groove side pin annular groove is just completely exposed, and then the inner hexagon screw is used for fixing the side pin baffle plate on the side wall of the upper die bottom plate. Therefore, the maintenance of the insert is completed and the normal production and use state of the die is restored.
The invention has the following beneficial effects:
the invention provides a bottom-to-bottom locking structure of a die pressing plate, which increases the bottom-to-bottom locking function of the pressing plate on the premise of not changing the original functions of a side pin and a side pin stroke groove by improving the side pin stroke groove and the structure of the side pin, can expose a defective insert, is convenient for on-line maintenance and treatment of die maintenance personnel, can complete maintenance on an automatic line under the condition of transferring a die to a maintenance area without interrupting production, saves a large amount of maintenance time, greatly improves the maintenance efficiency and the production efficiency, and reduces the maintenance cost and the production cost.
The invention is suitable for most cold stamping dies, has low processing and manufacturing cost and can be popularized in a large range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a front view of an upper die of a cold stamping die;
FIG. 2 is a prior art assembly structure of a material pressing plate and an upper mold bottom plate in an upper mold at A-A in FIG. 1;
FIG. 3 is a schematic view of the bottom locking structure of the die holder at A-A of FIG. 1 according to the present invention;
FIG. 4 is a left 20 view of the side pin travel slot and side pin of the present invention;
FIG. 5 is a schematic diagram of a partially enlarged upper die of the cold stamping die according to an embodiment of the present invention;
FIG. 6 is a schematic view of a lower die of the cold stamping die according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a bottom-to-bottom locking structure of a die pressing plate in a bottom-to-bottom locking state of the pressing plate;
in the figure:
i-the assembly structure of a material pressing plate and an upper die bottom plate in an upper die in the prior art; II, a mold pressing plate bottom locking structure;
1-socket head cap screw; 2-side pin baffle 2; 3-double-groove side pin; 31-a first annular groove; 32-ring groove II; 4-side pin travel slot; 41-circular counter bore; p41-counterbore Upper end; 5-upper die bottom plate; 51-side pin hole; 6-a shaping insert; 61-shaping insert working profile; 7-a material pressing plate; 8-cutting edge insert block; 81-cutting edge insert working profile; a 9-nitrogen cylinder; 10-upper die conical balance block concave part; 11-lower mold conical balance weight convex part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
A bottom locking structure of a die pressing plate comprises a side pin baffle 2, a side pin and a side pin stroke groove 4 machined in the side wall of the pressing plate 7; the side pin passes through a side pin hole 51 on the upper die bottom plate 5 and then is inserted into the side pin stroke slot 4; the side pin baffle 2 is clamped on the periphery of the side pin and is fixed with the side wall of the upper die bottom plate 5 through screw fixation; the lower end of the side pin stroke groove 4 is provided with a circular counter bore 41 towards the inner side of the side wall of the pressure plate 7 in a deep manner, and the circular counter bore 41 is used for accommodating the side pin when the upper die bottom plate 5 falls to the bottom and locking the upper die bottom plate 5 and the pressure plate 7 to the bottom.
Furthermore, the side pin is a double-groove side pin 3, and two annular grooves I and two annular grooves II with the same specification and size are sequentially machined at the tail of the double-groove side pin 3.
Furthermore, the side pin baffle 2 is clamped with the first annular groove 31, and when the upper die base plate 5 and the material pressing plate 7 are locked to the bottom, the side pin baffle 2 is clamped with the second annular groove 32.
Furthermore, the distance between the first annular groove and the second annular groove of the double-groove side pin 3 is L3132, L3132>10 mm.
Further, the clearance between the double-groove side pin 3 and the bottom surface of the side pin stroke groove 4 is e34, and (L3132-10mm) > e34> 0.
Further, a section of circular arc section is processed at the upper end of the side pin stroke groove 4, and the radius of the circular arc section is R4; the diameter of the side pin 3 is D3, then D3< 2R 4.
Further, the radius of the circular counter bore 41 at the lower end of the side pin stroke groove 4 is R41, D3< 2R 41.
Furthermore, the width of the side pin stroke slot 4 is L4, D3< L4, and L4 is more than or equal to 2R 41.
Furthermore, the distance between the upper end of the circular counter bore 41 and the upper end of the side pin stroke groove 4 is L441, L441>0, and L441 is smaller than the working stroke of the pressure plate 7.
Further, the side pin has a clearance e341 with the bottom surface of the circular counterbore 41 of the side pin stroke groove 4, and e341> 0.
Examples
As shown in fig. 1, 5 and 6, the cold stamping die comprises an upper die and a lower die, wherein the upper die comprises an upper die base plate 5, a pressure plate 7 and a cutting edge insert 8, an upper die conical balance block concave part 10 is arranged at the bottom of the pressure plate, a lower die conical balance block convex part 11 is arranged at the top of the lower die, and the lower die conical balance block convex part 11 is used for being in butt joint fit with the upper die conical balance block concave part 10.
The top of the side wall of the pressure plate 7 is provided with a nitrogen cylinder 9, and the nitrogen cylinder 9 is used for tightly pushing the upper die bottom plate 5.
The bottom locking structure of the die pressing plate in the embodiment comprises a hexagon socket head cap screw 1, a side pin baffle 2, a double-groove side pin 3 and a side pin stroke groove 4 machined in the side wall of the pressing plate 7.
As shown in fig. 5 and 3, two annular grooves with the same specification and size, namely an annular groove one 31 and an annular groove two 32, are machined on the double-groove side pin 3 near the tail part thereof; the distance between the two annular grooves is L3132, and L3132 is more than 10 mm; the double-slotted side pin 3 has a diameter D3.
The side pin stroke groove 4 is processed on the side wall of the pressure plate 7, and the upper end of the side pin stroke groove 4 is processed with an arc section with the radius of R4; the lower end of the side pin stroke groove 4 is deeply processed with a circular counter bore 41 towards the inner side of the side wall of the pressure plate 7, and the radius of the circular counter bore 41 is R41. The distance between the upper end of the circular counter bore 41 and the upper end of the side pin stroke groove 4 is L441; the side pin travel slot 4 has a width L4. D3< 2R 4, D3< 2R 41, D3< L4, L4 is more than or equal to 2R 41, L441 is more than 0, and L441 is less than the working stroke of the pressure plate 7.
As shown in fig. 5, the side pin baffle 2 is sleeved on the double-groove side pin 3 and clamped with the first annular groove 31, then the double-groove side pin 3 is inserted through the side pin hole 51 on the upper die base plate 5, and when the side pin baffle 2 is attached to the side wall of the upper die base plate 5, the side pin baffle 2 is fixed on the side wall of the upper die base plate 5 by the hexagon socket head cap screw 1, so that the double-groove side pin 3 can be prevented from falling off in the working process. In the normal use process of the die, the head of the double-groove side pin 3 is clamped in the upper end of the side pin stroke groove 4, so that the pressure plate 7 is prevented from falling.
As shown in FIG. 5, the clearance between the double-slot side pin 3 and the bottom surface of the side pin travel slot 4 is e34, and (L3132-10mm) > e34> 0.
As shown in fig. 7, the clearance between the double-groove side pin 3 and the bottom surface of the circular counterbore 41 of the side pin stroke groove 4 is e341, and e341> 0.
The working principle and the using process of the invention are as follows:
when the upper die base plate 5 moves downwards along with the press slider, and the lower die conical balance weight convex part 11 is in contact with the upper die conical balance weight concave part 10, because the upper die conical balance weight concave part 10 is fixed on the pressure plate 7, the pressure plate 7 is supported, at the moment, the upper die base plate 5 moves downwards continuously, and the pressure plate 7 is static, as shown in fig. 5 and 6, at the same time, the head of the double-groove side pin 3 slides downwards in the side pin stroke groove 4 of the pressure plate 7, and the nitrogen cylinder 9 at the top of the pressure plate 7 is gradually compressed, when the upper die base plate 5 moves downwards to the bottom dead center of the die, the inner hexagon screw 1 and the side pin baffle 2 are loosened, then the side pin baffle 2 is inserted into the two annular grooves 32 of the double-groove side pin 3, then the double-groove side pin 3 is pushed inwards together, and when the side pin baffle 2 is attached to the side wall of the upper die base plate 5, and fixing the side pin baffle 2 on the side wall of the upper die bottom plate 5 by using the inner hexagon screws 1.
Then, the press slide block is lifted, the upper die base plate 5 is lifted, and when the press slide block is lifted to the top dead center of the press, as shown in fig. 7, the head of the double-groove side pin 3 is contacted with the counterbore upper end P41 of the circular counterbore 41 in the side pin stroke groove 4 of the pressure plate 7, and the jacking force of the nitrogen cylinder 9 is counteracted. At this time, the pressure plate 7 is locked at the bottom, the shaping insert working profile 61 of the shaping insert 6 and the cutting edge insert working profile 81 of the cutting edge insert 8 (or the flanging insert) are completely exposed, and the mold maintenance personnel can quickly maintain the pressure plate. After the maintenance is finished, moving a press sliding block downwards to a bottom dead center of a die, loosening the inner hexagon screw 1 and the side pin baffle 2 in the same way, then drawing the double-groove side pin 3 outwards, inserting the side pin baffle 2 into the annular groove one 31 of the double-groove side pin 3 when the annular groove one 31 of the double-groove side pin 3 is just completely exposed, and then fixing the side pin baffle 2 on the side wall of the upper die base plate 5 by using the inner hexagon screw 1.
Therefore, the maintenance of the insert is completed and the normal production and use state of the die is restored.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A bottom locking structure of a die pressing plate is characterized by comprising a side pin baffle, a side pin and a side pin stroke groove machined in the side wall of the pressing plate; the side pin penetrates through a side pin hole in the upper die bottom plate and then is inserted into the side pin stroke groove; the side pin baffle is clamped on the periphery of the side pin and is fixed with the side wall of the upper die bottom plate through screw fixation; the lower end of the side pin stroke groove is provided with a circular counter bore in the depth direction towards the inner side of the side wall of the pressure plate, and the circular counter bore is used for containing the side pin when the upper die bottom plate falls to the bottom so as to lock the upper die bottom plate and the pressure plate to the bottom.
2. The bottom locking structure of a die pressing plate as claimed in claim 1, wherein the side pin is a double-groove side pin, and two annular grooves I and II with the same specification and size are sequentially machined at the tail of the double-groove side pin.
3. The bottom-of-die locking structure for the die pressing plate as claimed in claim 2, wherein the side pin baffle is engaged with the first annular groove, and when the upper die base plate and the pressing plate are locked to the bottom, the side pin baffle is engaged with the second annular groove.
4. A die presser plate bottom locking structure as claimed in claim 2, wherein said double-groove side pin has a first annular groove and a second annular groove spaced apart by L3132, L3132>10 mm.
5. The bottom die clamp locking arrangement of claim 4, wherein said double-slot side pin has a clearance e34 with said side pin travel slot bottom surface, and (L3132-10mm) > e34> 0.
6. The bottom locking structure of a die material pressing plate as claimed in claim 1, wherein a circular arc section is machined at the upper end of the side pin stroke groove, and the radius of the circular arc section is R4; the side pin diameter is D3, then D3<2 × R4.
7. The bottom die lock of claim 6, wherein the circular counterbore at the lower end of the side pin travel groove has a radius of R41, D3<2 × R41.
8. The bottom-of-mold material pressing plate locking structure as claimed in claim 7, wherein the width of the side pin stroke groove is L4, D3< L4, and L4 ≧ 2R 41.
9. The bottom-of-die lock structure as claimed in claim 8, wherein the distance between the upper end of the circular counter bore and the upper end of the side pin stroke groove is L441, L441>0, and L441 is smaller than the working stroke of the pressure plate.
10. The bottom-of-die lock structure as claimed in claim 1, wherein the clearance between the side pin and the circular counterbore bottom surface of the side pin travel groove is e341, and e341> 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239100.4A CN114798916A (en) | 2022-03-11 | 2022-03-11 | Locking structure for mold material pressing plate to bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239100.4A CN114798916A (en) | 2022-03-11 | 2022-03-11 | Locking structure for mold material pressing plate to bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114798916A true CN114798916A (en) | 2022-07-29 |
Family
ID=82528288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210239100.4A Pending CN114798916A (en) | 2022-03-11 | 2022-03-11 | Locking structure for mold material pressing plate to bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114798916A (en) |
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| KR20020094549A (en) * | 2001-06-12 | 2002-12-18 | 현대자동차주식회사 | Structure of locking retainer pin for press |
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| CN201613311U (en) * | 2009-12-18 | 2010-10-27 | 四川集成天元模具制造有限公司 | Material pressing device with side-pin vibration and noise reducing device |
| CN202021277U (en) * | 2011-02-23 | 2011-11-02 | 即墨市吉泰模具制作公司 | Die for side pin center pillar reinforcing plate |
| CN102806271A (en) * | 2011-05-30 | 2012-12-05 | 江苏振世达汽车模具有限公司 | Pressing core guide plate and side pin coincidence structure for automobile stamping die |
| CN203253808U (en) * | 2013-03-30 | 2013-10-30 | 长城汽车股份有限公司 | Connection structure of pressure core of vehicle covering part |
| CN206065206U (en) * | 2016-07-01 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | Sell position-limit mechanism in a kind of side |
| CN206153367U (en) * | 2016-10-27 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | Material core direction stop device presses and stamping die thereof |
| CN110722060A (en) * | 2019-11-18 | 2020-01-24 | 江铃汽车股份有限公司 | Cold stamping die structure with clamping plate |
| CN110883219A (en) * | 2019-11-04 | 2020-03-17 | 一汽轿车股份有限公司 | Make things convenient for locking means of quick assembly disassembly mould side round pin |
| CN112077209A (en) * | 2020-08-13 | 2020-12-15 | 安徽科正模具有限公司 | Prevent pressure flitch of thermoforming spare unloading in-process deformation |
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2022
- 2022-03-11 CN CN202210239100.4A patent/CN114798916A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020094549A (en) * | 2001-06-12 | 2002-12-18 | 현대자동차주식회사 | Structure of locking retainer pin for press |
| KR20030005636A (en) * | 2001-07-09 | 2003-01-23 | 현대자동차주식회사 | Structure of locking retainer pin for press |
| CN201613311U (en) * | 2009-12-18 | 2010-10-27 | 四川集成天元模具制造有限公司 | Material pressing device with side-pin vibration and noise reducing device |
| CN202021277U (en) * | 2011-02-23 | 2011-11-02 | 即墨市吉泰模具制作公司 | Die for side pin center pillar reinforcing plate |
| CN102806271A (en) * | 2011-05-30 | 2012-12-05 | 江苏振世达汽车模具有限公司 | Pressing core guide plate and side pin coincidence structure for automobile stamping die |
| CN203253808U (en) * | 2013-03-30 | 2013-10-30 | 长城汽车股份有限公司 | Connection structure of pressure core of vehicle covering part |
| CN206065206U (en) * | 2016-07-01 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | Sell position-limit mechanism in a kind of side |
| CN206153367U (en) * | 2016-10-27 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | Material core direction stop device presses and stamping die thereof |
| CN110883219A (en) * | 2019-11-04 | 2020-03-17 | 一汽轿车股份有限公司 | Make things convenient for locking means of quick assembly disassembly mould side round pin |
| CN110722060A (en) * | 2019-11-18 | 2020-01-24 | 江铃汽车股份有限公司 | Cold stamping die structure with clamping plate |
| CN112077209A (en) * | 2020-08-13 | 2020-12-15 | 安徽科正模具有限公司 | Prevent pressure flitch of thermoforming spare unloading in-process deformation |
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