CN110624993B - Bottom rotary-cut structure applied to air bag diffuser - Google Patents
Bottom rotary-cut structure applied to air bag diffuser Download PDFInfo
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- CN110624993B CN110624993B CN201910974788.9A CN201910974788A CN110624993B CN 110624993 B CN110624993 B CN 110624993B CN 201910974788 A CN201910974788 A CN 201910974788A CN 110624993 B CN110624993 B CN 110624993B
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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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
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a bottom rotary cutting structure applied to an air bag diffuser, and relates to the technical field of dies formed in a metal plate or pipe, bar or section punching mode in a pressurizing and cutting mode. The device comprises an upper die base, a fixed plate, an upper die knife edge, an upper die stripper plate, a lower die stripper plate, a limiting plate, a guide rail fixed plate, a rotary cutting guide rail, a lower die base, a nitrogen spring, a female die base, a lower die knife edge and a positioning block; the positioning block comprises a body, a thimble and a positioning clamp; the upper die knife edge comprises a bulge and an annular groove; the lower die knife edge comprises a position avoiding groove. The annular groove is formed in the lower portion of the upper die cutter opening, the opening of a product after rotary cutting meets the size requirement, the service life of the cutter opening is prolonged, and the reject ratio of the product is reduced; a positioning device is added on the lower die stripper plate to fix the product during operation, so that the stability of the product is ensured, and the stamping efficiency is improved; the lower die cutter edge is provided with the position avoiding groove, so that the service life of the lower die cutter edge is prolonged, and the maintenance cost is reduced.
Description
Technical Field
The invention relates to the technical field of dies formed in a metal plate or pipe, bar or section punching mode in a pressurizing and cutting mode, in particular to a bottom rotary cutting structure applied to an air bag diffuser.
Background
With the technological progress and the improvement of living standard, automobiles have entered the lives of common people. In order to improve the driving safety performance and protect the safety of drivers and passengers, safety airbags are generally installed on vehicles and used for protecting drivers and passengers when dangers occur in the driving process. Currently, an airbag generally comprises an airbag sensor, an anti-collision airbag, an electronic control device and the like. The driver side anti-collision airbag device is arranged in a steering wheel; passenger side impact air bag devices are typically mounted on the instrument panel. The safety air bag sensors are respectively arranged on the left side, the right side and the middle part of the cab partition plate; the airbag sensor and the airbag system in the middle are installed together with the electronic control device. The air bag assembly mainly comprises an air bag, a gas generator, an igniter and the like. When the automobile has a collision accident in the driving process, firstly, the airbag sensor receives a collision signal, and as long as the specified strength is reached, the sensor acts and sends a signal to the electronic controller. The electronic controller receives the signal and compares it with its original stored signal, and if an airbag deployment condition is reached, a drive circuit sends an activation signal to a gas generator in the airbag module. The gas generator receives the signal and ignites the gas generating agent to generate a large amount of gas, the gas is filtered and cooled and then enters the air bag, so that the air bag breaks through the liner to be rapidly unfolded in a very short time, an elastic air cushion is formed in the front of a driver or a passenger, and the air cushion leaks and contracts in time to absorb impact energy, thereby effectively protecting the head and the chest of a human body and preventing the head and the chest from being injured or reducing the injury degree.
Diffuser elements are often provided in the gas generator. The diffuser guides and diffuses the gas generated in the gas generator into the airbag to inflate the airbag. After the diffuser pipe body is stretched, the bottom part of the punched and stretched pipe body needs to be trimmed and processed into the required pipe body shape and height. The bottom blank in the stamping industry at the present stage generally adopts a punching process, the general punching mouth part can deform in size and has poor plane flatness, the requirements of customers are difficult to meet, punching scraps are easy to generate and adhere to the surface of a product, the surface is crushed, the appearance is difficult to meet the requirements, the product can only be repaired or scrapped, and a large amount of resources are wasted.
The chinese utility model "horizontal rotary trimming die of air bag diffuser pipe body" with publication number CN205463841U provides a horizontal rotary trimming die of an air bag diffuser pipe body, which comprises an upper die, a lower die and a stripper plate mounted on the lower die, wherein the upper die comprises a trimming punch and a positioning block movably connected to the lower end of the trimming punch, and a gap is left between the positioning block and the trimming punch; the lower die comprises a sliding block and a sliding block guide rail arranged on the periphery of the sliding block, and the sliding block is a rotary circumferential track along the running track of the sliding block guide rail; the upper end of the sliding block is connected with a punching female die, and the lower end of the sliding block is connected with a sliding block supporting spring; and ejector rods capable of moving up and down are arranged in the sliding blocks and the punching female dies. Compared with the traditional trimming die, the trimming die has the advantages that the trimming efficiency is improved by more than 50 percent, one operator is reduced, and a smooth section and a burr-free edge can be obtained.
The chinese invention with publication number CN103264085B provides a rotary cutting die device and a rotary cutting process of a metal bottom cover, the device comprises a lower die holder and an upper die holder, the lower die holder is fixed with a lower backing plate, a lower backing plate is fixed on the lower backing plate, a rotary cutting slotting tool capable of moving horizontally is arranged on the lower backing plate, and the middle part of the rotary cutting slotting tool is provided with a cutting edge with the edge as a cutting edge; two driving devices respectively used for driving the rotary cutting slotting tool to horizontally move. The process comprises the steps of placing a pre-baked paint metal plate material which is processed by stamping on an inner template; the upper die base moves downwards to the stripper plate and the inner template to clamp the workpiece; after the rotary cutting slotting tool circularly moves for a circle, the upper die base stops moving downwards; and the upper die base moves upwards to separate the stripper plate from the workpiece, and the workpiece and the annular waste are taken out to obtain a finished workpiece product. The invention not only greatly shortens the processing procedure of the metal bottom cover, reduces the production cost, but also improves the processing quality and the processing efficiency of the whole product.
Neither of the above patents improves the knife edge and adds no horizontal fixing means to the product.
Disclosure of Invention
The invention aims to provide a bottom rotary cutting structure applied to an air bag diffuser, which can prolong the service life of upper and lower die cutting edges, increase a product positioning structure, improve the stamping efficiency, reduce the reject ratio of products and reduce the maintenance cost.
In order to solve the problems, the technical scheme of the invention is as follows:
a bottom rotary cutting structure applied to an airbag diffuser comprises an upper die base, wherein a first base plate is fixedly connected to the lower surface of the upper die base, a second base plate is fixedly connected to the lower surface of the first base plate, a fixing plate is fixedly connected to the lower surface of the second base plate, an upper die stripper plate is arranged below the fixing plate and fixedly connected to the fixing plate through a connecting rod, a circular hole is formed in the center of the upper die stripper plate, an upper die knife edge is longitudinally and fixedly arranged in the center of the fixing plate, and the upper die knife edge penetrates through the circular hole of the upper die stripper plate;
go up the mould edge of a knife for the diameter echelonment cylindrical structure that reduces in proper order, it is the biggest to go up mould edge of a knife upper portion diameter, it is provided with the arch to go up mould edge of a knife lower surface, the arch is cylindrical, protruding diameter is less than go up mould edge of a knife lower surface diameter, it is provided with the ring channel to go up mould edge of a knife lower part to lower surface outer edge, the ring channel longitudinal section is right angled triangle.
Further, still include the bottom plate, fixed surface is connected with the nitrogen spring on the bottom plate, fixed surface is connected with the die holder on the nitrogen spring, fixed surface is connected with the lower bolster on the die holder, the lower bolster cross section is the rectangle structure, fixed surface is connected with the guide rail fixed plate on the lower bolster, the guide rail fixed plate is hollow square body structure, the guide rail fixed plate with the lower bolster sets up with one heart, the hollow square body structure that is of guide rail fixed plate, guide rail fixed plate inner wall fixedly connected with rotary-cut guide rail, fixed surface is connected with the limiting plate on the guide rail fixed plate, the limiting plate top is provided with the lower mould and takes off the flitch, the lower mould take off the flitch pass through connecting rod swing joint in the limiting plate with the guide rail fixed plate, the lower mould takes off the flit.
Furthermore, a positioning device is fixedly arranged on the upper surface of the lower die stripper plate and used for fixing a product.
Further, positioner includes the locating piece, the locating piece sets up to two, the locating piece about the lower mould takes off flitch round hole symmetry setting, the locating piece includes body, thimble, location axle and location clamp, location clamp swing joint in location axle, thimble fixed connection in the body, the thimble with the contact setting of location clamp, the location clamp includes the clamping part, the function of centre gripping is realized in the cooperation of two clamping parts.
Further, a female die base is arranged below the lower die stripper plate and is of a square structure, protruding edges matched with the rotary cutting guide rails are arranged on the lower portion of the side wall of the female die base, a supporting plate is fixedly connected to the lower portion of the female die base, a cushion block is fixedly connected to the lower portion of the supporting plate, a small inner top is fixedly connected to the center of the supporting plate in the longitudinal direction, and the lower portion of the small inner top is fixedly connected to the center of the cushion block.
Furthermore, a circular groove is longitudinally and downwardly formed in the center of the upper surface of the female die base, a lower die knife edge is arranged in the groove, a round hole is formed in the center of the lower die knife edge, and a position avoiding groove extending along the whole circumferential direction is formed in the position, close to the upper surface of the lower die knife edge, of the inner wall of the round hole.
Furthermore, the longitudinal section of the avoiding groove is of a semicircular, U-shaped or V-shaped structure.
Furthermore, the position avoiding groove is arranged to be close to the upper surface of the lower die knife edge by 1 mm.
Further, the angle of the right-angled triangle longitudinal section of the upper die knife edge annular groove far away from the lower surface of the upper die knife edge is 5 degrees.
Compared with the prior art, the invention has the following beneficial effects:
1. the annular groove is formed in the lower portion of the upper die cutter edge, the opening portion of a product after rotary cutting meets the size requirement, the service life of the cutter edge is prolonged, the length and the size of the product are stable, and the reject ratio of the product is reduced.
2. According to the invention, the positioning device is additionally arranged on the lower die stripper plate, so that the product is fixed during operation, the stability of the product is ensured, and the stamping efficiency is improved.
3. According to the invention, the clearance groove is designed on the lower die cutter edge, so that the cut scraps are avoided, the service life of the lower die cutter edge is prolonged, and the maintenance cost is reduced.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2a is a schematic view of a product of the present invention before rotary cutting;
FIG. 2b is a schematic view of a rotary-peeled product of the present invention;
FIG. 3a is a schematic top view of a lower die blade of the present invention;
FIG. 3b is a schematic view of a cross-sectional view of the lower die blade of the present invention;
FIG. 4 is a schematic top view of a stripper plate and positioning device of the lower die of the present invention;
FIG. 5 is a schematic view of an upper die edge configuration of the present invention;
wherein, 1 is an upper die holder; 2 is a fixed plate; 3 is an upper die knife edge; 4 is an upper die stripper plate; 5 is a lower die stripper plate; 6 is a limiting plate; 7 is a guide rail fixing plate; 8 is a rotary cutting guide rail; 9 is a lower die holder; 10 is a nitrogen spring; 11 is a concave die base; 12 is a lower die knife edge; 13 is a positioning block; 131 is a body; 132 is a thimble; 133 is a positioning clamp; 31 is a projection; and 32 is an annular groove.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.
Example (b):
as shown in fig. 1-5, the bottom rotary cutting structure applied to the diffuser of the airbag includes an upper die base 1, a first base plate is fixedly connected to a lower surface of the upper die base 1, a second base plate is fixedly connected to a lower surface of the first base plate, a fixing plate 2 is fixedly connected to a lower surface of the second base plate, an upper die stripper plate 4 is arranged below the fixing plate 2, the upper die stripper plate 4 is fixedly connected to the fixing plate 2 through a connecting rod, a circular hole is formed in the center of the upper die stripper plate 4, an upper die edge 3 is longitudinally fixedly arranged in the center of the fixing plate 2, and the upper die edge 3 penetrates through the circular hole of the upper die stripper plate.
The device also comprises a lower supporting plate, the upper surface of the lower supporting plate is fixedly connected with a nitrogen spring 10, the upper surface of the nitrogen spring 10 is fixedly connected with a lower die holder 9, the upper surface of the lower die holder 9 is fixedly connected with a lower backing plate, the cross section of the lower backing plate is of a rectangular structure, the upper surface of the lower backing plate is fixedly connected with a guide rail fixing plate 7, the guide rail fixing plate 7 is of a hollow square structure, the guide rail fixing plate 7 and the lower backing plate are arranged concentrically, the guide rail fixing plate 7 is hollow and has a square structure, the inner wall of the guide rail fixing plate 7 is fixedly connected with a rotary cutting guide rail 8, the upper surface of the guide rail fixing plate 7 is fixedly connected with a limiting plate 6, a lower die stripper plate 5 is arranged above the limiting plate 6, the lower die stripper plate 5 is movably connected to the limiting plate 6 and the guide rail fixing plate 7 through a connecting rod, and a round hole is formed in the center of the lower die stripper plate 5.
Go up mould edge of a knife 3 for the diameter echelonment cylindrical structure that reduces in proper order, it is the biggest to go up 3 upper portions diameters of mould edge of a knife, it is provided with protruding 31 to go up 3 lower surfaces of mould edge of a knife, protruding 31 is cylindrical, protruding 31 diameter is less than go up 3 lower surfaces of mould edge of a knife diameter, it is provided with ring channel 32 to the outer edge of lower surface to go up 3 lower parts of mould edge of a knife, ring channel 32 longitudinal section is right triangle, the angle of going away from 3 lower surfaces of mould edge of a knife of going up 3 ring channel 32 right triangle longitudinal section of mould edge of a knife is 5 degrees.
The upper surface of the lower die stripper plate 5 is fixedly provided with a positioning device, and the positioning device is used for fixing a product; the positioning device comprises a positioning block 13, the positioning block 13 is arranged into two, the positioning block 13 is symmetrically arranged about the circular hole of the lower die stripper plate 5, the positioning block 13 comprises a body 131, a thimble 132, a positioning shaft and a positioning clamp 133, the positioning clamp 133 is movably connected to the positioning shaft, the thimble 132 is fixedly connected to the body 131, the thimble 132 is in contact with the positioning clamp 133, the positioning clamp 133 comprises clamping parts, and the two clamping parts are matched to realize the clamping function.
The lower mould takes off flitch 5 below and is provided with die base 11, die base 11 is the square body structure, 11 lateral wall lower parts of die base are provided with rotary-cut guide rail 8 complex bead, 11 lower part fixedly connected with backup pads of die base, backup pad lower part fixedly connected with cushion, the vertical little interior top that sets up of fixedly connected with of backup pad center department, little interior top lower part fixed connection is in cushion center department.
The die is characterized in that a circular groove is longitudinally and downwards formed in the center of the upper surface of the die base 11, a lower die knife edge 12 is arranged in the groove, and a circular hole is formed in the center of the lower die knife edge 12. The product cuts off process stress effect and produces and warp, blocks out for preventing to warp the product round hole inner wall is being close to lower mould edge of a knife 12 upper surface department and is being provided with the groove of keeping away along the extension of whole circumferencial direction, the longitudinal section of keeping away the groove is semi-circular, U-shaped or V-arrangement structure, it sets up to be close to lower mould edge of a knife 12 upper surface department 1mm department to keep away the groove, lower mould edge of a knife 12 is made for powder metallurgy steel material.
And (3) running:
the upper die moves downwards, the lower part of the upper die knife edge 3 has the same shape with the product, the upper die knife edge 3 guides the product to enter the round hole of the lower die stripper plate 5 and simultaneously enter the round hole of the lower die knife edge 12, and the product is transversely fixed by the positioning device. The upper die stripper plate 4 presses the lower die stripper plate 5 to move downwards continuously, the lower die stripper plate 5 presses the die base 11 to move downwards integrally, and when the die base 11 is tightly attached to the limiting plate 6, the limiting plate 6 limits the upper die knife edge 3 and the lower die knife edge 12 to keep a certain gap. At this time, the convex rib at the lower part of the female die base 11 is always in contact with the rotary cutting guide rail 8. In the operation process, the lower die blade 12 approximately makes a spiral circular motion, and rotary cutting of the product is completed under the action of shearing force.
And the upper die moves upwards, and the product moves upwards to the position of the lower die stripper plate 5 under the action of the elastic force of the nitrogen spring 10 to complete stamping.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A bottom rotary cutting structure applied to an airbag diffuser comprises an upper die base, wherein a first base plate is fixedly connected to the lower surface of the upper die base, a second base plate is fixedly connected to the lower surface of the first base plate, a fixing plate is fixedly connected to the lower surface of the second base plate, an upper die stripper plate is arranged below the fixing plate and fixedly connected to the fixing plate through a connecting rod, a circular hole is formed in the center of the upper die stripper plate, an upper die knife edge is longitudinally and fixedly arranged in the center of the fixing plate, and the upper die knife edge penetrates through the circular hole of the upper die stripper plate;
the method is characterized in that: the upper die edge is of a stepped cylindrical structure with the diameters being reduced in sequence, the diameter of the upper portion of the upper die edge is the largest, a protrusion is arranged on the lower surface of the upper die edge, the protrusion is cylindrical, the diameter of the protrusion is smaller than that of the lower surface of the upper die edge, an annular groove is arranged from the lower portion of the upper die edge to the outer edge of the lower surface, and the longitudinal section of the annular groove is in a right-angled triangle shape;
the guide rail fixing plate is characterized by further comprising a lower supporting plate, a nitrogen spring is fixedly connected to the upper surface of the lower supporting plate, a lower die base is fixedly connected to the upper surface of the nitrogen spring, a lower backing plate is fixedly connected to the upper surface of the lower backing plate, the cross section of the lower backing plate is of a rectangular structure, a guide rail fixing plate is fixedly connected to the upper surface of the lower backing plate, the guide rail fixing plate is of a hollow square structure, the guide rail fixing plate and the lower backing plate are concentrically arranged, the guide rail fixing plate is hollow and of a square structure, a rotary cutting guide rail is fixedly connected to the inner wall of the guide rail fixing plate, a limiting plate is fixedly connected to the upper surface of the guide rail fixing plate, a lower die stripper plate is arranged above the limiting plate, the lower die;
the upper surface of the lower die stripper plate is fixedly provided with a positioning device, and the positioning device is used for fixing a product;
the positioning device comprises two positioning blocks, the positioning blocks are symmetrically arranged about the circular holes of the lower die stripper plate, each positioning block comprises a body, a thimble, a positioning shaft and a positioning clamp, the positioning clamps are movably connected to the positioning shafts, the thimbles are fixedly connected to the bodies, the thimbles are in contact with the positioning clamps, the positioning clamps comprise clamping portions, and the two clamping portions are matched to realize the clamping function.
2. The rotary bottom cutting structure for an airbag diffuser according to claim 1, wherein: the lower die stripper plate is characterized in that a female die base is arranged below the lower die stripper plate and is of a square structure, ribs matched with rotary cutting guide rails are arranged on the lower portion of the side wall of the female die base, a supporting plate is fixedly connected to the lower portion of the female die base, a cushion block is fixedly connected to the lower portion of the supporting plate, a small inner top is fixedly connected to the center of the supporting plate in the longitudinal direction, and the lower portion of the small inner top is fixedly connected to the center of the cushion block.
3. The rotary bottom cutting structure for an airbag diffuser according to claim 2, wherein: the die base upper surface center department is provided with circular recess vertically downwards, be provided with the lower mould edge of a knife in the recess, lower mould edge of a knife center department is provided with the round hole, the round hole inner wall is provided with the groove of keeping away that extends along whole circumferencial direction near lower mould edge of a knife upper surface department.
4. The rotary bottom cutting structure for an airbag diffuser according to claim 3, wherein: the longitudinal section of the avoiding groove is of a semicircular, U-shaped or V-shaped structure.
5. The rotary bottom cutting structure for an airbag diffuser according to claim 4, wherein: the position avoiding groove is arranged to be close to the upper surface of the lower die knife edge by 1 mm.
6. The rotary bottom cutting structure for an airbag diffuser according to claim 1, wherein: the angle of the right-angled triangle longitudinal section of the upper die knife edge annular groove far away from the lower surface of the upper die knife edge is 5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974788.9A CN110624993B (en) | 2019-10-14 | 2019-10-14 | Bottom rotary-cut structure applied to air bag diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974788.9A CN110624993B (en) | 2019-10-14 | 2019-10-14 | Bottom rotary-cut structure applied to air bag diffuser |
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| Publication Number | Publication Date |
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| CN110624993A CN110624993A (en) | 2019-12-31 |
| CN110624993B true CN110624993B (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910974788.9A Active CN110624993B (en) | 2019-10-14 | 2019-10-14 | Bottom rotary-cut structure applied to air bag diffuser |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4794060B2 (en) * | 2001-03-29 | 2011-10-12 | 株式会社アマダ | Punch mold |
| CN203862800U (en) * | 2014-04-29 | 2014-10-08 | 东莞致嘉金属科技有限公司 | Rotary-cutting die device |
| CN205147015U (en) * | 2015-11-16 | 2016-04-13 | 苏州明远汽车零部件制造有限公司 | Air bag diffuser side blow drift for spot facing work |
| CN205463841U (en) * | 2016-03-28 | 2016-08-17 | 苏州明远汽车零部件制造有限公司 | Horizontal rotation side cut mould of air bag diffuser body |
| CN208288755U (en) * | 2018-05-31 | 2018-12-28 | 重庆力东机电有限公司 | A kind of rotary-cut mold device |
| CN209174684U (en) * | 2018-10-17 | 2019-07-30 | 东莞市智汇五金有限公司 | It is a kind of for being punched the formed punch of elongated hole |
-
2019
- 2019-10-14 CN CN201910974788.9A patent/CN110624993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4794060B2 (en) * | 2001-03-29 | 2011-10-12 | 株式会社アマダ | Punch mold |
| CN203862800U (en) * | 2014-04-29 | 2014-10-08 | 东莞致嘉金属科技有限公司 | Rotary-cutting die device |
| CN205147015U (en) * | 2015-11-16 | 2016-04-13 | 苏州明远汽车零部件制造有限公司 | Air bag diffuser side blow drift for spot facing work |
| CN205463841U (en) * | 2016-03-28 | 2016-08-17 | 苏州明远汽车零部件制造有限公司 | Horizontal rotation side cut mould of air bag diffuser body |
| CN208288755U (en) * | 2018-05-31 | 2018-12-28 | 重庆力东机电有限公司 | A kind of rotary-cut mold device |
| CN209174684U (en) * | 2018-10-17 | 2019-07-30 | 东莞市智汇五金有限公司 | It is a kind of for being punched the formed punch of elongated hole |
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| Publication number | Publication date |
|---|---|
| CN110624993A (en) | 2019-12-31 |
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