CN105665531A - Inclined wedge stamping mechanism, stamping die and stamping method for vehicle door hinge reinforcing plate - Google Patents
Inclined wedge stamping mechanism, stamping die and stamping method for vehicle door hinge reinforcing plate Download PDFInfo
- Publication number
- CN105665531A CN105665531A CN201610016117.8A CN201610016117A CN105665531A CN 105665531 A CN105665531 A CN 105665531A CN 201610016117 A CN201610016117 A CN 201610016117A CN 105665531 A CN105665531 A CN 105665531A
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- Prior art keywords
- sliding block
- inclined wedge
- slide block
- block
- wedge
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Classifications
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses an inclined wedge stamping mechanism. The inclined wedge stamping mechanism comprises an inclined wedge sliding block and upper pressing plates slidably installed on the two sides of the inclined wedge sliding block. One side of the inclined wedge sliding block is matched with a lower driving base so that the vertical movement of the inclined wedge sliding block can be converted into horizontal movement. A trimming knife block is fixed to the other side of the inclined wedge sliding block. A V-shaped protrusion is vertically arranged in the middle of an installation surface, located on the same side of the trimming knife block, of the inclined wedge sliding block. The inclined wedge stamping mechanism further comprises a lower sliding block. A punching assembly is installed on the back portion of the lower sliding block. The two sides of the lower sliding block are each slidably connected with a lower pressing plate which is placed horizontally. The top surface of the lower sliding block is arranged obliquely, and a V-shaped groove matched with the V-shaped protrusion is vertically formed in the top surface of the lower sliding block. The V-shaped protrusion of the inclined wedge sliding block presses the V-shaped groove of the lower sliding block, so that the lower sliding block moves horizontally along the lower pressing plates. According to the scheme, the lower sliding block is arranged on the lower side of the inclined wedge stamping mechanism, the lower sliding block is driven to move in the horizontal direction while the inclined wedge sliding block conducts inclined wedge movement, and accordingly stamping at different angles can be completed at the same time.
Description
Technical field
The present invention relates to diel field, the processing method being specifically related to a kind of punching press Wedge mechanism, diel and door hinge reinforcing plate.
Background technology
When trimming and piercing die technological design, require trimming and piercing die angle less than 5 degree to reduce the generation of Pressing Deformation or burr, improve part quality, and Automobile Parts surface curvature consecutive variations and moulding complexity are different, therefore on part, profile normal orientation differs bigger trimming and piercing die and requires over the Wedge mechanism realization of different angles.
When stamping parts is formed in guarantee part quality, presser's ordinal number is more few, and part accumulation position error is more few, and frock development cost is more low.
Prior art Wedge mechanism specifically includes that driving pedestal 11, drives guide plate 12, forces backhaul hook 13, wedge slide block 21, slide plate 22, upper flipper guide 23, top board 24, breaker bolt 25, back-moving spring 26, upper cushion block 27, edge iron block 28.
As shown in Figure 1, pedestal 11 is driven to be fixedly mounted on die shoe, drive guide plate 12, force backhaul hook 13 to be fixedly mounted on driving pedestal 11, contact slide guide effect of playing when driving guide plate 12 to work with wedge slide block 21, force backhaul hook 13, for wedge slide block 21, pressure rollback during stuck situation occurs.
Wedge slide block 21 is movably arranged in upper bolster by top board 24, and slide plate 22 is fixedly mounted on upper bolster, and upper flipper guide 23 is fixedly mounted on the both sides of wedge slide block 21, guiding during for wedge slide block movement; Breaker bolt 25 is fixedly mounted on wedge slide block 21 after upper bolster bottom via, plays safe spacing effect; Top board 24 is fixedly mounted on upper bolster, contacts with upper flipper guide 23 slide guide of wedge slide block 21 and is limited in inside upper bolster by wedge slide block 21; Wedge slide block back-moving spring 26 is fixed on upper bolster, and upper cushion block 27 is fixedly mounted on upper bolster, spacing during for wedge slide block 21 backhaul.Edge iron block 28 is fixedly mounted on the upper of wedge slide block 21, plate flanging and restriking during for work. During work, wedge slide block 21 is descending, and moves along the driving pedestal inclined-plane being fixed on die shoe, wedge slider top is along the horizontal inward of pressing plate simultaneously, and now, edge iron block 28 moves along driving pedestal direction, contact with outside stamping parts, complete the deburring to stamping parts with this and process.
But in prior art, Wedge mechanism is only capable of realizing the punching press on a direction successively, i.e. edge iron block moving along inclined-plane; The job contents such as the punching of different angles, flange near adjacent position on part cannot be realized simultaneously, it is necessary to realize in different operations respectively at two secondary moulds, it is possible to die procedure number can be caused to increase, mold tooling cost increases.
Summary of the invention
It is an object of the invention to provide a kind of punching press Wedge mechanism, the demand of different angles parts punching press during to solving existing Wedge mechanism punching press, cannot be met simultaneously.
The present invention provides a kind of punching press Wedge mechanism, including wedge slide block, it is slidably mounted on the top board of described wedge slide block both sides, the side of described wedge slide block coordinates thus the up and down motion of described wedge slide block is converted into horizontal movement with lower driving pedestal, the opposite side of described wedge slide block is fixed with edge iron block, with in the middle part of the installed surface of edge iron block homonymy, vertical to be provided with a V-arrangement protruding on described wedge slide block; Also including sliding block, the back of described sliding block is provided with punching assembly, all slides with the lower platen of a horizontal positioned and be connected in described sliding block both sides; The top surface inclination of described sliding block is arranged, and described end face vertical be provided with the V-shaped groove matched with described V-arrangement projection, the V-arrangement projection of described wedge slide block presses the v-depression of described sliding block, so that described sliding block is along described lower platen horizontal movement.
Preferably, the two bottom sides of described sliding block is respectively and fixedly provided with flipper guide, and described lower platen is located at described lower flipper guide top and contacts with sliding block slide guide, and described lower flipper guide is along described lower platen transverse movement.
Preferably, also including the return spring being arranged on described sliding block back, described return spring is located at the bottom side of described punching assembly.
Preferably, described sliding block and described lower driving base into contact time initial, when described wedge slide block moves downward predeterminable range, described edge iron block and described sliding block are simultaneously to the side horizontal movement away from described lower driving pedestal.
The present invention also provides for a kind of diel, is arranged on described upper bolster including upper bolster, die shoe and above-mentioned punching press Wedge mechanism, described top board and described wedge slide block, and described driving pedestal and described lower platen are arranged on described die shoe.
The present invention also provides for the process for stamping of a kind of door hinge reinforcing plate, comprises the following steps: (1) is to door hinge reinforcing plate drawing and moulding; (2) the door hinge reinforcing plate trimming and piercing die after drawing being completed; (3) door hinge reinforcing plate after deburring being completed carries out shaping; (4) door hinge reinforcing plate after shaping being completed is repaiied punching, is cut; The side deburring of door hinge reinforcing plate and side punching are adopted above-mentioned diel by step (4).
Effect of the invention is that: the downside of the punching press Wedge mechanism in this programme is provided with a sliding block, wedge slide block is when carrying out wedge motion, simultaneously drive sliding block to move in the horizontal direction, and then simultaneously complete the punching press of different angles, the content that part a certain region profile pressing direction is different can be realized simultaneously, reduce die procedure number, improve parts ram efficiency, reduce mold tooling development cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is Wedge mechanism structure chart of the prior art;
Fig. 2 is the structure chart of punching press Wedge mechanism in the present embodiment;
Fig. 3 is the broken away view of Wedge mechanism in the present embodiment;
Fig. 4 is that in the present embodiment, Wedge mechanism other direction splits schematic diagram;
Fig. 5 is the installation diagram of wedge punching mechanism and die shoe;
Fig. 6 is the flow chart of the process for stamping of door hinge reinforcing plate;
Fig. 7 is the first sequence drawing and moulding process schematic representation;
Fig. 8 is the second sequence trimming and piercing die process schematic representation;
Fig. 9 is the 3rd positive shaping of sequence, side shaping process schematic diagram;
Figure 10 is positive punching in the 4th sequence, just cut off, the position view cut is repaiied in side punching, side;
Description of symbols in figure 1 above-5: 11-drives pedestal 12-to drive guide plate 13-to force on backhaul hook 21-wedge slide block 211-on installed surface 22-slide plate 23-on flipper guide 24-top board 25-breaker bolt 26-back-moving spring 27-under cushion block 28-edge iron block 29-bottom guide 31-sliding block 311-flipper guide 33-lower platen 34-return spring 35-lower cushion block 36-punching assembly under installed surface 32-
In Fig. 7: the 101-blank line 102-blank shrinkage front 103-right labelling 107-die parting line of labelling 104-bead 105-left labelling 106-on earth
In Fig. 8: the trimming line 202-waste knife 203-Die structure 204-punching of 201-border
In Fig. 9: 301-shaping die parting line 302-side shaping die parting line
In Figure 10: side deburring 402-termination, 401-termination side punching 403-is just cutting off the 404-positive punching of side punching 405-
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with accompanying drawing, the present invention is further detailed.
Shown in Fig. 2, Fig. 3, Fig. 4, pedestal 11 is driven to be fixedly mounted on die shoe, guide plate 12 is driven to be fixedly mounted on driving pedestal 11, backhaul hook 13 is forced to be fixedly mounted on wedge slide block 21, driving guide plate 12 contact slide guide effect of playing when working with wedge slide block 21, pressure backhaul hook 13 is used for punching press to be completed to retread the slider wedge 21 pressure rollback when there is stuck situation. Wedge slide block 21 is slidably mounted in upper bolster by top board 24, slide plate 22 is fixedly mounted on upper bolster, upper flipper guide 23 is fixedly mounted on the both sides of wedge slide block 21, top board 24 is fixedly mounted on upper bolster, contact slide guide with both sides, wedge slide block 21 top step and wedge slide block 21 is limited in inside upper bolster, wherein, slide guide guiding when upper flipper guide 23 is for wedge slide block horizontal movement; It is fixedly mounted on wedge slide block 21 after upper bolster bottom breaker bolt 25, plays safe spacing effect; Upper cushion block 27 is fixedly mounted on upper bolster, spacing during for wedge slide block 21 horizontal movement backhaul; In order to ensure that wedge slide block punching press resets after completing, wedge slide block is arranged above back-moving spring 26, and back-moving spring is fixedly mounted on upper bolster, and the other end acts on wedge slide block. The both sides of wedge slide block 21 are slidably fitted with two top boards 24, top board 24 is fixed on upper bolster, upper mould moves downward, drive wedge slide block 21 and coordinate with driving pedestal 11, along top board 24 horizontal movement while making wedge slide block 21 move downward, namely edge iron block 28 moves downward horizontal movement simultaneously.
In the present invention, adopt a sliding block 31, it is with wedge slide block 21, pedestal 11 is driven to form the punching press Wedge mechanism of this programme, wherein, punching assembly 36 is installed at the back of sliding block 31, all slide with the lower platen 33 of a horizontal positioned and be connected in the both sides of sliding block 31, the top surface inclination of sliding block 31 is arranged, on the installed surface 211 of the edge iron block 28 of wedge slide block 21, what middle part was vertical is provided with V-arrangement projection, sliding block end face is provided with the v-depression matched with V-arrangement projection, when wedge slide block 21 moves downward, V-arrangement projection coordinates with V-shaped groove, thus driving sliding block 31 along lower platen 33 horizontal movement, V-shaped groove is as shown in Figure 4, V-shaped groove and V-arrangement projection are structure commonly used in the art, therefore it is not shown specifically. wedge slide block 21, while carrying out deburring, also can realize the punching of other direction simultaneously, is arranged in diel by punching press Wedge mechanism provided by the invention, adopts same set of mould while wedge slide block effect, also can carry out the punching of other direction.
As shown in Figure 2, it is respectively and fixedly provided with flipper guide 32 in sliding block 31 two bottom sides, lower platen 33 be located at described lower flipper guide 32 top and with described sliding block 31 both sides sliding contact, described lower flipper guide 32 is along the transverse movement of described lower platen 33, lower flipper guide coordinates, with lower platen, the direction of motion that ensure that sliding block, it is ensured that the punching of punching assembly, wherein, in diel, lower platen is fixed on die shoe.
Shown in Fig. 2, Fig. 3, time initial, sliding block 31 contacts with described driving pedestal 11, location, guarantee that sliding block 31 and wedge slide block 21 are synchronized with the movement, when described wedge slide block 21 moves downward predeterminable range, edge iron block 28 and described sliding block 31 are simultaneously to the side horizontal movement away from described driving pedestal 11, by the motion of wedge slide block 21, force edge iron block 28 and punching assembly 36 to work simultaneously. In order to ensure the return of sliding block after punching 31, at lower installed surface 311 place at sliding block 31 back, being also equipped with return spring 34, wherein return spring 34 is located at the bottom side of described punching assembly 36. In diel; it can contact with die shoe; during work, it is compressed, after punching; contacted with driving pedestal 11 by elastic force sliding block 31 return of return spring 34; certainly, it is possible to add the cushion block 35 of preset thickness, to guarantee the return of return spring; also being fixed on die shoe by cushion block, return spring 34 contacts with cushion block 35.
Shown in Fig. 4, the installed surface 211 that wedge slide block V-arrangement is protruding arranges one group of bottom guide 29, bottom guide 29 and described installed surface 211 surround a V-shaped groove, and the end face of described sliding block 31 slides along described V-shaped groove, it is ensured that the relative motion of wedge slide block and sliding block.
It should be noted that, in the present embodiment, the edge iron block 28 being arranged on wedge slide block 21 can be, but not limited to edge iron block, it is arranged on the punching assembly 34 outside sliding block 31 and can be, but not limited to punching assembly, the direction of motion of sliding block 31 can be, but not limited to horizontal direction, can be from the horizontal by certain angle, above example is only for emphasizing its direction of motion, namely meet the motion of wedge slide block and the horizontal movement of sliding block simultaneously, in actually used, appointment cutter can be changed as required, it is an object of the invention to so that Wedge mechanism can realize the press work content of different directions simultaneously.
As illustrated in figures 6-10, generally, the processing method to door hinge reinforcing plate, mainly include the following steps that (1) is to door hinge reinforcing plate drawing and moulding;As shown in Figure 7, left side door hinge reinforcing plate and right side door hinge reinforcing plate symmetric arrays, draw forming is carried out by a secondary mould, blank line 101 is hinge stiffening plate end line, die parting line 107 is the cut-off rule at convex-concave place, and blank shrinkage front 102 is the edge line after draw forming after plate contraction. Labelling 103 extrudes impression after shaping on blank on earth, and design is in scrap area, and after being used for judging Guan Bi, on earth whether press. Plate stream when bead 104 is used for controlling to shape. Left labelling 105, right labelling 106 are used for distinguishing left member or right member.
(2) the door hinge reinforcing plate trimming and piercing die after drawing being completed; As shown in Figure 8, trimming and piercing die, drawing carries out trimming and piercing die in this sequence after completing, and is mainly cut off by border waste material with border trimming line 201 for border, then passes through border and arranges that border waste material is cut off by waste knife 202. Overlapping regions in the middle of the part of left and right is carried out excision waste material with punch pattern simultaneously, the aperture on part is punched out 204.
(3) door hinge reinforcing plate after deburring being completed carries out shaping; As shown in Figure 9, part is carried out shaping+side re-shaping exercise content after completing by deburring in the 3rd sequence, it is mainly and with shaping die parting line 301 for border, both sides are carried out positive shaping, for border, part end portion moulding is carried out side shaping with side shaping die parting line 302 simultaneously.
(4) door hinge reinforcing plate after shaping being completed is repaiied punching, is cut; As shown in Figure 10, shaping carries out positive punching+just cut off+side punching+side in the 4th sequence and repaiies and cut job content after completing, and mainly remaining left and right part overlap joint waste material in the second sequence is cut off (include side, termination repair cut 401, just cut off 403); Hole on the part of termination is carried out termination side punching 402; The aperture on part top is carried out positive punching 403; The hole of product both sides is carried out side punching 404.
But in the 4th sequence, as shown in Figure 10, remaining left and right part overlap joint waste material in the second sequence is cut off (include side, termination repair cut 401, just cut off 403); Hole on the part of termination is carried out termination side punching 402; The aperture on part top is carried out positive punching 405; The hole of product both sides is carried out side punching 404. But owing to product profile is irregular, ensureing that part is repaiied cut quality for reducing trimming and piercing die burr, the side of product termination repaiies that to cut 401 different from the pressing direction of side punching 402. Therefore, in a preferred embodiment, the side deburring of door hinge reinforcing plate and side punching are adopted the diel in such scheme to carry out by step (4), guarantee in step (4), the deburring of door hinge reinforcing plate side square from side punching punching press different time, adopt same mould to simultaneously complete.
Below some one exemplary embodiment of the present invention is only described by the mode of explanation, undoubtedly, for those of ordinary skill in the art, when without departing from the spirit and scope of the present invention, it is possible to by various different modes, described embodiment is modified. Therefore, above-mentioned accompanying drawing and description are inherently illustrative, should not be construed as the restriction to the claims in the present invention protection domain.
Claims (6)
1. a punching press Wedge mechanism, including wedge slide block (21), it is slidably mounted on the top board (24) of described wedge slide block (21) both sides, the side of described wedge slide block (21) coordinates thus the up and down motion of described wedge slide block (21) is converted into horizontal movement with lower driving pedestal (11), the opposite side of described wedge slide block (21) is fixed with edge iron block (28), it is characterised in that: described wedge slide block (21) upper with the installed surface of edge iron block (28) homonymy in the middle part of vertical be provided with a V-arrangement projection;
Also including sliding block (31), the back of described sliding block (31) is provided with punching assembly (36), all slides with the lower platen (33) of a horizontal positioned and be connected in described sliding block (31) both sides;
The top surface inclination of described sliding block (31) is arranged, and described end face vertical be provided with the V-shaped groove matched with described V-arrangement projection, the V-arrangement projection of described wedge slide block (21) presses the v-depression of described sliding block (31), so that described sliding block (31) is along described lower platen (33) horizontal movement.
2. Wedge mechanism as claimed in claim 1, it is characterized in that: the two bottom sides of described sliding block (31) is respectively and fixedly provided with flipper guide (32), described lower platen (33) is located at described lower flipper guide (32) top and contacts with sliding block 31 slide guide, and described lower flipper guide (32) is along described lower platen (33) transverse movement.
3. Wedge mechanism as claimed in claim 2, it is characterized in that: also including being arranged on the return spring (34) at described sliding block (31) back, described return spring (34) is located at the bottom side of described punching assembly (36).
4. Wedge mechanism as claimed in claim 3, it is characterized in that: time initial, described sliding block (31) contacts with described lower driving pedestal (11), when described wedge slide block (21) moves downward predeterminable range, described edge iron block (28) and described sliding block (31) are simultaneously to the side horizontal movement away from described lower driving pedestal (11).
5. a diel, it is characterized in that: include upper bolster, die shoe and the multidirectional compound punching Wedge mechanism as according to any one of claim 1 to 5, described top board (24) and described wedge slide block (21) are arranged on described upper bolster, and described driving pedestal (11) and described lower platen (33) are arranged on described die shoe.
6. a process for stamping for door hinge reinforcing plate, comprises the following steps: (1) is to door hinge reinforcing plate drawing and moulding; (2) the door hinge reinforcing plate trimming and piercing die after drawing being completed; (3) door hinge reinforcing plate after deburring being completed carries out shaping; (4) door hinge reinforcing plate after shaping being completed is repaiied punching, is cut; It is characterized in that: the side deburring of door hinge reinforcing plate and side punching are adopted the diel described in claim 5 by step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016117.8A CN105665531A (en) | 2016-01-07 | 2016-01-07 | Inclined wedge stamping mechanism, stamping die and stamping method for vehicle door hinge reinforcing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016117.8A CN105665531A (en) | 2016-01-07 | 2016-01-07 | Inclined wedge stamping mechanism, stamping die and stamping method for vehicle door hinge reinforcing plate |
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| CN105665531A true CN105665531A (en) | 2016-06-15 |
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| CN201610016117.8A Pending CN105665531A (en) | 2016-01-07 | 2016-01-07 | Inclined wedge stamping mechanism, stamping die and stamping method for vehicle door hinge reinforcing plate |
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| CN (1) | CN105665531A (en) |
Cited By (5)
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| CN107262603A (en) * | 2017-07-14 | 2017-10-20 | 安徽江淮汽车集团股份有限公司 | A kind of compact side reshaping device |
| CN107617675A (en) * | 2017-10-07 | 2018-01-23 | 浙江长兴和良智能装备有限公司 | A kind of tube end maching forming machine |
| CN109514646A (en) * | 2018-12-29 | 2019-03-26 | 山东力诺特种玻璃股份有限公司 | PAR lamp bottom multi-through hole perforating mechanism |
| CN112742954A (en) * | 2020-12-22 | 2021-05-04 | 重庆正格技术创新服务有限公司 | Trimming and separating die for rear-section outer connecting plates of left front longitudinal beam and right front longitudinal beam of automobile |
| CN113426879A (en) * | 2021-07-07 | 2021-09-24 | 东风汽车股份有限公司 | Trimming and punching die for light truck back panel and control method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109514646A (en) * | 2018-12-29 | 2019-03-26 | 山东力诺特种玻璃股份有限公司 | PAR lamp bottom multi-through hole perforating mechanism |
| CN109514646B (en) * | 2018-12-29 | 2024-03-29 | 山东力诺特种玻璃股份有限公司 | PAR lamp bottom multi-through hole punching mechanism |
| CN112742954A (en) * | 2020-12-22 | 2021-05-04 | 重庆正格技术创新服务有限公司 | Trimming and separating die for rear-section outer connecting plates of left front longitudinal beam and right front longitudinal beam of automobile |
| CN113426879A (en) * | 2021-07-07 | 2021-09-24 | 东风汽车股份有限公司 | Trimming and punching die for light truck back panel and control method thereof |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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Application publication date: 20160615 |