CN113119219A - Punching device for flexible punching and welding system of automobile bumper - Google Patents
Punching device for flexible punching and welding system of automobile bumper Download PDFInfo
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- CN113119219A CN113119219A CN202110317877.3A CN202110317877A CN113119219A CN 113119219 A CN113119219 A CN 113119219A CN 202110317877 A CN202110317877 A CN 202110317877A CN 113119219 A CN113119219 A CN 113119219A
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- 238000004080 punching Methods 0.000 title claims abstract description 87
- 238000003466 welding Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 230000033001 locomotion Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a punching device for a flexible punching and welding system of an automobile bumper, which relates to the field of automobile part processing and comprises a punching device, wherein the punching device is rotatably connected with a sliding block through an angle adjusting mechanism and comprises an L-shaped frame, a top plate is fixedly connected to the L-shaped frame, a gas-liquid pressure cylinder is fixedly connected to the top plate, an upper punching die is fixedly connected to an output shaft of the gas-liquid pressure cylinder, a lower punching die is fixedly connected to the L-shaped frame, and the punching device can easily realize movement in a vertical plane through a transverse moving motor and a lifting motor; an angle adjusting mechanism is additionally arranged for the punching device, so that the punching device can conveniently adjust the punching angle, and the worm and gear transmission can realize self-locking on the adjusted angle; the laser range finder is additionally arranged, the position of the sliding seat can be accurately measured, the position information is recorded through the controller, the correct position of the sliding seat is quickly determined when the bumper is conveniently replaced, the punching device is symmetrically arranged and moves synchronously, the symmetric punching can be realized, and the working hours are reduced.
Description
Technical Field
The invention relates to the field of automobile part machining, in particular to a punching device for an automobile bumper flexible punching and welding system.
Background
The automobile front and rear bumpers are automobile parts which are arranged at the front and rear positions of an automobile and used for protecting an automobile body, the front and rear bumpers of the existing automobile are mostly made of plastics, and the automobile bumpers need to be punched after being molded.
Most of current bumper punching equipment, the punching device position is fixed relatively, when punching a hole to the bumper, need pass through the calculation, thereby with the punching device adjustment installation suitable position, after the installation, the position adjustment of punching a hole is inconvenient, the flexibility is relatively poor, especially to some factories that the bumper kind is more, different bumpers, the position of punching a hole is different, this just leads to fixed mounting's punching device, it is difficult to adapt to the work of punching a hole of multiple bumper, if adopt the robot workstation to punch a hole, although can satisfy the requirement of adaptability, but the robot punches a hole, can only punch a hole at every turn, the required man-hour of punching a hole is longer, and the robot cost is higher.
Disclosure of Invention
The invention aims to provide a punching device for a flexible punching and welding system of an automobile bumper, which solves the problems in the background technology.
The utility model provides a flexible punching device for punching press system of car bumper, includes base plate and punching device, sliding connection has two slides on the base plate, fixedly connected with backplate on the slide, sliding connection has the slider on the backplate, be equipped with angle adjustment mechanism on the slider, punching device passes through angle adjustment mechanism and is connected with the slider rotation, punching device includes L shape frame, fixedly connected with roof on the L shape frame, fixedly connected with gas-liquid pressure cylinder on the roof, the output shaft fixedly connected with of gas-liquid pressure cylinder goes up the mould that punches a hole, fixedly connected with lower mould that punches a hole on the L shape frame, all be equipped with laser range finder on the top of backplate and the base plate.
Preferably, the angle adjusting mechanism comprises a driving motor, a turntable bearing and a rotating seat, the driving motor is fixedly connected to the side wall of the sliding block, an output shaft of the driving motor is fixedly connected with a driving bevel gear, the driving bevel gear is meshed with a driven bevel gear, the driven bevel gear is fixedly connected to one end of a worm, the worm is rotatably connected to the front wall of the sliding block, the worm is meshed with a worm wheel, the worm wheel is fixedly connected with the rotating seat, the rotating seat is rotatably connected to the front wall of the sliding block through the turntable bearing, the L-shaped frame is fixedly connected with the rotating seat, and an angle sensor is further arranged between the rotating seat and the sliding block.
Preferably, the top of the back plate is fixedly connected with a lifting motor, an output shaft of the lifting motor is fixedly connected with a vertical lead screw, the vertical lead screw is rotatably connected with the back plate, and the vertical lead screw is connected with the sliding block through a lead screw nut.
Preferably, the both sides fixedly connected with vertical guide rail of backplate, slider and vertical guide rail sliding connection, fixedly connected with transverse guide rail on the base plate, slide and transverse guide rail sliding connection, still fixedly connected with frame on the base plate, fixedly connected with auxiliary rail in the frame, backplate and auxiliary rail sliding connection.
Preferably, a transverse moving motor is fixedly connected to the substrate, a bidirectional screw is fixedly connected to an output shaft of the transverse moving motor, two sections of threads with opposite rotation directions are arranged on the bidirectional screw, the two sliding seats are connected to the threads with different rotation directions of the bidirectional screw through screw nuts, and the bidirectional screw is rotatably connected with the substrate.
Preferably, the punching upper die comprises a die holder, side plates are fixedly connected to two sides of the die holder, the side plates are connected with an L-shaped frame in a sliding mode, a punch is fixedly connected to the bottom of the die holder, a pressing plate is further arranged below the die holder, four sliding rods are fixedly connected to the pressing plate, the sliding rods penetrate through the die holder and are connected with the die holder in a sliding mode, a blocking piece is arranged at the top ends of the sliding rods, springs are sleeved on the sliding rods between the die holder and the pressing plate, and through holes are formed in the pressing plate.
Preferably, still fixedly connected with vertical board on the base plate, fixedly connected with indulges on the vertical board and moves motor and sliding connection has the slide, indulge the vertical lead screw of output shaft fixedly connected with of motor, vertical lead screw passes through screw nut and is connected with the slide, fixedly connected with lift cylinder on the slide, the output shaft fixedly connected with backup pad of lift cylinder, be equipped with a plurality of shape pieces down in the backup pad, still fixedly connected with a plurality of telescopic links in the backup pad, shape piece on the output fixedly connected with of telescopic link.
The invention has the advantages that:
the punching device can easily realize the movement in a vertical plane through a transverse moving motor and a lifting motor;
an angle adjusting mechanism is additionally arranged for the punching device, so that the punching device can conveniently adjust the punching angle, and the worm and gear transmission can realize self-locking on the adjusted angle;
the laser range finder is additionally arranged, the position of the sliding seat can be accurately measured, the position information is recorded through the controller, the correct position of the sliding seat is quickly determined when the bumper is conveniently replaced, the punching device is symmetrically arranged and moves synchronously, the symmetric punching can be realized, and the working hours are reduced.
Drawings
Fig. 1 is a schematic structural diagram of the invention.
Fig. 2 is a schematic structural diagram of the punching device and the angle adjusting mechanism.
Fig. 3 is a partially enlarged view of the punch upper die.
Fig. 4 is a schematic structural diagram of the jacking cylinder.
In the figure: 1-base plate, 2-punching device, 20-L-shaped frame, 21-top plate, 22-gas-liquid pressure cylinder, 23-punching upper die, 231-die holder, 232-side plate, 233-punch, 234-press plate, 235-slide bar, 236-spring and 24-punching lower die;
3-a sliding seat, 4-a back plate, 41-a vertical guide rail and 5-a sliding block;
6-angle adjusting mechanism, 61-driving motor, 63-rotating seat, 64-driving bevel gear, 65-driven bevel gear, 66-worm and 67-worm gear;
7-laser range finder, 8-lifting motor, 81-vertical screw, 11-transverse guide rail, 12-frame, 121-auxiliary guide rail, 13-transverse moving motor, 131-bidirectional screw, 14-longitudinal plate, 15-longitudinal moving motor, 16-sliding plate, 17-longitudinal screw, 18-lifting cylinder, 182-lower contour block, 181-supporting plate and 19-telescopic rod.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, a punching device for flexible punching and welding system of automobile bumper comprises a substrate 1 and a punching device 2, sliding connection is carried out on the substrate 1 to two sliding seats 3, fixedly connected with backplate 4 is carried out on the sliding seats 3, sliding connection is carried out on the backplate 4 to slider 5, angle adjusting mechanism 6 is arranged on the slider 5, the punching device 2 is rotationally connected with the slider 5 through angle adjusting mechanism 6, the punching device 2 comprises an L-shaped frame 20, a top plate 21 is fixedly connected with the L-shaped frame 20, a gas-liquid pressure cylinder 22 is fixedly connected with the top plate 21, an upper die 23 is fixedly connected with an output shaft of the gas-liquid pressure cylinder 22, a lower die 24 is fixedly connected with the L-shaped frame 20 to punch a hole, and laser range finders 7 are arranged on the top of the backplate 4 and the substrate 1. The laser range finder 7 is used for measuring the position of the sliding seat 3, and the position of the punching device 2 is convenient to switch.
In this embodiment, the angle adjusting mechanism 6 includes a driving motor 61, a turntable bearing and a rotating seat 63, the driving motor 61 is fixedly connected to a side wall of the slider 5, an output shaft of the driving motor 61 is fixedly connected with a driving bevel gear 64, the driving bevel gear 64 is engaged with a driven bevel gear 65, the driven bevel gear 65 is fixedly connected to one end of a worm 66, the worm 66 is rotatably connected to a front wall of the slider 5, the worm 66 is engaged with a worm wheel 67, the worm wheel 67 is fixedly connected with the rotating seat 63, the rotating seat 63 is rotatably connected to the front wall of the slider 5 through the turntable bearing, the L-shaped frame 20 is fixedly connected with the rotating seat 63, and an angle sensor is further disposed between the rotating seat 63 and the slider 5. The angle sensor is used for measuring the rotating angle of the rotating seat.
In this embodiment, the top of the back plate 4 is fixedly connected with a lifting motor 8, an output shaft of the lifting motor 8 is fixedly connected with a vertical lead screw 81, the vertical lead screw 81 is rotatably connected with the back plate 4, and the vertical lead screw 81 is connected with the sliding block 5 through a lead screw nut.
In this embodiment, the two sides of the back plate 4 are fixedly connected with vertical guide rails 41, the slider 5 is connected with the vertical guide rails 41 in a sliding manner, the substrate 1 is fixedly connected with transverse guide rails 11, the sliding base 3 is connected with the transverse guide rails 11 in a sliding manner, the substrate 1 is further connected with a rack 12 in a fixed manner, the rack 12 is fixedly connected with auxiliary guide rails 121, and the back plate 4 is connected with the auxiliary guide rails 121 in a sliding manner.
In this embodiment, a traverse motor 13 is fixedly connected to the substrate 1, a bidirectional screw 131 is fixedly connected to an output shaft of the traverse motor 13, two sections of threads with opposite turning directions are arranged on the bidirectional screw 131, the two sliders 3 are connected to the threads with different turning directions of the bidirectional screw 131 through screw nuts, and the bidirectional screw 131 is rotatably connected to the substrate 1.
In this embodiment, the upper punching die 23 includes a die holder 231, side plates 232 are fixedly connected to two sides of the die holder 231, the side plates 232 are slidably connected to the L-shaped frame 20, a punch 233 is fixedly connected to the bottom of the die holder 231, a pressing plate 234 is further arranged below the die holder 231, four sliding rods 235 are fixedly connected to the pressing plate 234, the sliding rods 235 penetrate through the die holder 231 and are slidably connected to the die holder 235, a blocking piece is arranged at the top end of each sliding rod 235, a spring 236 is sleeved on each sliding rod 235 between the die holder 231 and the pressing plate 234, and a through hole is formed in the pressing plate 234. The diameter of the through hole is larger than that of the punch 233, so that the punch 233 can smoothly pass through the through hole.
In this embodiment, still fixedly connected with vertical board 14 on the base plate 1, fixedly connected with indulges on vertical board 14 and moves motor 15 and sliding connection has slide 16, indulge the vertical lead screw 17 of output shaft fixedly connected with who moves motor 15, vertical lead screw 17 passes through screw nut and is connected with slide 16, fixedly connected with lift cylinder 18 on the slide 16, the output shaft fixedly connected with backup pad 181 of lift cylinder 18, be equipped with a plurality of profile modeling pieces 182 down on the backup pad 181, still fixedly connected with a plurality of telescopic links 19 on the backup pad 181, profile modeling piece 191 is gone up to the output fixedly connected with of telescopic link 19.
The working process and the principle thereof are as follows:
when the adjustment high position that punches a hole, elevator motor 8 starts the rotatory slider 5 that drives through vertical lead screw 81 and reciprocates, laser range finder 7 on backplate 4 can real-time supervision slider 5's position, when height adjustment arrives suitable position, utilize the high data that laser range finder 7 measured of controller record, use when supplying the bumper of change next time, if the bumper of changing punches a hole before, then the accessible controller reads the positional information of saving, automatic adjustment punching device 2's position.
When the punching distance is adjusted, the traversing motor 13 is started to rotate through the bidirectional screw 131 to drive the sliding seats 3 to move, two sections of threads of the bidirectional screw 131 are screwed to different directions, so that the two sliding seats 3 can synchronously and symmetrically move, and meanwhile, the laser range finder 7 on the substrate 1 can also measure the real-time position of the sliding seats 3 and record and store the real-time position for next replacement.
When the punching angle needs to be adjusted, the driving motor 61 is started, the driving bevel gear 64 drives the driven bevel gear 65 on the worm 66 to realize rotation control on the worm 66, the worm 66 rotates to drive the worm gear 67 on the rotating seat 63 to rotate, the rotating seat 63 is fixedly connected with the outer ring of the turntable bearing, and the inner ring of the turntable bearing is fixedly connected to the sliding block, so that the rotating seat rotates under the driving of the driving motor 61, and the L-shaped frame 20 is fixedly connected with the rotating seat 63, so that the punching device 2 can realize the function of adjusting the angle on the front wall of the sliding block 5.
During punching, a bumper is placed on the lower profiling block 182, the telescopic rod 19 retracts, the upper profiling block 191 presses downwards to be matched with the lower profiling block 182 to fix the bumper, the longitudinal moving motor 15 drives the sliding plate 16 to move on the longitudinal plate 14, so that the bumper is moved to a punching position, and the lifting cylinder 18 can adjust the height of the bumper, so that the bumper can lift to bypass objects which possibly interfere with the movement of the bumper.
When the bumper reaches the punching position, the lower punching die 24 at the moment is in contact with the inner wall of the bumper, the gas-liquid pressure cylinder 22 is started, the output shaft extends, the die holder 231 is pressed down along the L-shaped frame 20 under the action of the output shaft, the pressing plate 234 is firstly in contact with the front wall of the bumper, the die holder 231 continues to move downwards, the spring 236 is compressed, the pressing plate 234 and the lower die further press the bumper, the punch 233 is pressed down to realize punching, after the punching is finished, the output shaft of the gas-liquid pressure cylinder 22 retracts, the spring 236 releases pressure, the pressing plate 234 resets, the longitudinal movement motor 15 is started, the bumper returns to the feeding position, the telescopic rod 19 extends, and the bumper can be.
Based on the above: the punching device 2 can easily realize the movement in a vertical plane through the transverse moving motor 13 and the lifting motor 8; the angle adjusting mechanism 6 is additionally arranged on the punching device 2, so that the punching angle of the punching device 2 can be conveniently adjusted, and the worm wheel 67 and the worm 66 can realize self-locking on the adjusted angle; add laser range finder 7, the position of slide 3 can the accurate measurement to through controller record position information, confirm the correct position of slide 3 fast when conveniently changing the bumper, punching device 2 symmetry sets up and synchronous motion, can realize the symmetry and punch a hole, reduces man-hour.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (7)
1. The punching device for the flexible punching and welding system of the automobile bumper is characterized by comprising a substrate (1) and a punching device (2), wherein two sliding seats (3) are connected to the substrate (1) in a sliding manner, a back plate (4) is fixedly connected to the sliding seats (3), a sliding block (5) is connected to the back plate (4) in a sliding manner, an angle adjusting mechanism (6) is arranged on the sliding block (5), the punching device (2) is rotatably connected with the sliding block (5) through the angle adjusting mechanism (6), the punching device (2) comprises an L-shaped frame (20), a top plate (21) is fixedly connected to the L-shaped frame (20), a gas-liquid pressurizing cylinder (22) is fixedly connected to the top plate (21), an upper punching die (23) is fixedly connected to an output shaft of the gas-liquid pressurizing cylinder (22), a lower punching die (24) is fixedly connected to the L-shaped frame (20), and the top of the back plate (4) and the substrate (1) are provided with laser range finders (7).
2. The punching device for the flexible punching and welding system of the automobile bumper according to claim 1, wherein the angle adjusting mechanism (6) comprises a driving motor (61), a turntable bearing and a rotating seat (63), the driving motor (61) is fixedly connected to the side wall of the sliding block (5), an output shaft of the driving motor (61) is fixedly connected with a driving bevel gear (64), the driving bevel gear (64) is meshed with a driven bevel gear (65), the driven bevel gear (65) is fixedly connected to one end of a worm (66), the worm (66) is rotatably connected to the front wall of the sliding block (5), the worm (66) is meshed with a worm wheel (67), the worm wheel (67) is fixedly connected with the rotating seat (63), the rotating seat (63) is rotatably connected to the front wall of the sliding block (5) through the turntable bearing, and the L-shaped frame (20) is fixedly connected with the rotating seat (63), an angle sensor is further arranged between the rotating seat (63) and the sliding block (5).
3. The punching device for the flexible punching and welding system of the automobile bumper according to claim 1, characterized in that a lifting motor (8) is fixedly connected to the top of the back plate (4), an output shaft of the lifting motor (8) is fixedly connected with a vertical lead screw (81), the vertical lead screw (81) is rotatably connected with the back plate (4), and the vertical lead screw (81) is connected with the sliding block (5) through a lead screw nut.
4. The punching device for the flexible punching and welding system of the automobile bumper as claimed in claim 1, wherein vertical guide rails (41) are fixedly connected to two sides of the back plate (4), the sliding block (5) is slidably connected with the vertical guide rails (41), the transverse guide rails (11) are fixedly connected to the base plate (1), the sliding seat (3) is slidably connected with the transverse guide rails (11), a rack (12) is further fixedly connected to the base plate (1), the auxiliary guide rails (121) are fixedly connected to the rack (12), and the back plate (4) is slidably connected with the auxiliary guide rails (121).
5. The punching device for the flexible punching and welding system of the automobile bumper as claimed in claim 1, wherein a traverse motor (13) is fixedly connected to the base plate (1), a bidirectional screw (131) is fixedly connected to an output shaft of the traverse motor (13), two sections of threads with opposite rotation directions are arranged on the bidirectional screw (131), two sliding seats (3) are connected to the threads with different rotation directions of the bidirectional screw (131) through screw nuts, and the bidirectional screw (131) is rotatably connected with the base plate (1).
6. The punching device for the flexible punching and welding system of the automobile bumper as claimed in claim 1, wherein the upper punching die (23) comprises a die holder (231), side plates (232) are fixedly connected to two sides of the die holder (231), the side plates (232) are slidably connected with the L-shaped frame (20), a punch (233) is fixedly connected to the bottom of the die holder (231), a pressing plate (234) is further arranged below the die holder (231), four sliding rods (235) are fixedly connected to the pressing plate (234), the sliding rods (235) penetrate through the die holder (231) and are slidably connected with the die holder, a blocking piece is arranged at the top end of each sliding rod (235), a spring (236) is sleeved on each sliding rod (235) between the die holder (231) and the pressing plate (234), and a through hole is formed in the pressing plate (234).
7. The punching device for the flexible punching and welding system of the automobile bumper according to claim 1, it is characterized in that the base plate (1) is also fixedly connected with a longitudinal plate (14), a longitudinal moving motor (15) is fixedly connected on the longitudinal plate (14) and is connected with a sliding plate (16) in a sliding way, the output shaft of the longitudinal movement motor (15) is fixedly connected with a longitudinal screw rod (17), the longitudinal screw rod (17) is connected with a sliding plate (16) through a screw rod nut, a lifting cylinder (18) is fixedly connected on the sliding plate (16), an output shaft of the lifting cylinder (18) is fixedly connected with a supporting plate (181), a plurality of lower contour blocks (182) are arranged on the supporting plate (181), a plurality of telescopic rods (19) are fixedly connected to the supporting plate (181), the output end of the telescopic rod (19) is fixedly connected with an upper profiling block (191).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317877.3A CN113119219A (en) | 2021-03-25 | 2021-03-25 | Punching device for flexible punching and welding system of automobile bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317877.3A CN113119219A (en) | 2021-03-25 | 2021-03-25 | Punching device for flexible punching and welding system of automobile bumper |
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| Publication Number | Publication Date |
|---|---|
| CN113119219A true CN113119219A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110317877.3A Pending CN113119219A (en) | 2021-03-25 | 2021-03-25 | Punching device for flexible punching and welding system of automobile bumper |
Country Status (1)
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| CN (1) | CN113119219A (en) |
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| CN117301188A (en) * | 2023-11-28 | 2023-12-29 | 无锡雅士迪汽车用品有限公司 | Automobile foot pad punching die |
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| CN113790343A (en) * | 2021-09-07 | 2021-12-14 | 湖北联城通科技股份有限公司 | Thing networking label information collection station |
| CN114769426A (en) * | 2022-04-08 | 2022-07-22 | 山东鲁南精工机械有限公司 | Punching device for two ends of multi-specification pipe |
| CN117301188A (en) * | 2023-11-28 | 2023-12-29 | 无锡雅士迪汽车用品有限公司 | Automobile foot pad punching die |
| CN117301188B (en) * | 2023-11-28 | 2024-02-02 | 无锡雅士迪汽车用品有限公司 | Automobile foot pad punching die |
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Application publication date: 20210716 |
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