CN109047501A - A kind of orthopedic synthesis mold with fine of product - Google Patents
A kind of orthopedic synthesis mold with fine of product Download PDFInfo
- Publication number
- CN109047501A CN109047501A CN201810963018.XA CN201810963018A CN109047501A CN 109047501 A CN109047501 A CN 109047501A CN 201810963018 A CN201810963018 A CN 201810963018A CN 109047501 A CN109047501 A CN 109047501A
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- China
- Prior art keywords
- orthopedic
- host
- mold
- fine
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 84
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 17
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 17
- 238000004080 punching Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 241000271510 Agkistrodon contortrix Species 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 27
- 230000008569 process Effects 0.000 abstract description 22
- 239000000047 product Substances 0.000 description 49
- 238000001816 cooling Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- 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
- B21D37/16—Heating or cooling
Abstract
The present invention relates to a kind of orthopedic synthesis molds with fine of product; it is characterized by comprising host upper molds; host lower die immediately below the host upper mold; it is set to the orthopedic component of the host upper mold; it is set to the punching upper die mechanism of the host upper mold, and is set to the punching lower die mechanism of the host lower die.Product of the present invention is orthopedic and the synthesis mold of fine have realize orthopedic and two processes of fine by one set of die complete independently, while improve orthopedic precision and avoid product excessively high temperature the advantages of.
Description
Technical field
The present invention relates to mould applications, more particularly to a kind of orthopedic synthesis mold with fine of product.
Background technique
Stamping die is that material (metal or nonmetallic) is processed into the one of part (or semi-finished product) in punch process
Kind special process equipment.Punching press is at room temperature, to apply pressure to material using the mold being mounted on press machine, make its production
It is estranged from or plastic deformation, thus obtain needed for part a kind of pressure processing method.
Fine, i.e. fine-edge blanking.Automobile fine blanking part produces based on strength flanging fine-edge blanking.The geometry of fine blanking part
Shape, dimensional tolerance and geometric tolerance and shear surface quality are all much higher than the part of common stamping, and fine blanking technology is in automobile zero
Part manufacturing field plays very big effect.
Although the structure type of all kinds of stamping dies and complexity difference, the part for forming mold is again varied, total
It is divided into upper die and lower die.Upper mold generally passes through die shank and is fixed on the sliding block of press machine, and leads with sliding block along press machine
Rail moves up and down, and lower die is fixed on the workbench of press machine.
One stamping parts generally requires to complete by multi-step forming processes.Due to stamping parts shape, dimensional accuracy, life
The differences such as batch, raw material are produced, stamping procedure is also multiplicity, but is broadly divided into separation process and molding procedure two greatly
Class.The process that separation process instigates stamping parts and plate to be separated from each other along certain contour line, such as: cutting, punching, blanking,
Notch, trimming etc..Molding procedure refers to that material generates plastic deformation under conditions of not rupturing, to obtain certain shapes, size
With the process of required precision part, such as: bending, drawing, flange, bulging, shaping etc..
Currently, sags and crests mold is beaten or taken to the well known orthopedic process of product predominantly manually to deformation of products point
It is orthopedic to product.Well known product finishing treatment process is to carry out fine to product peripheral structure using mold or beat by hand
Mill.
However, currently known orthopedic technology defect is more.It is orthopedic by hand to be unable to complete that deflection is larger, thickness is biggish
Modified product, main problem are that artificial orthopedic precision is not high, are not enough to complete the biggish process of intensity.Concave-convex point type mould
Tool pressure is limited by board and can not be adjusted, and is easy to weigh product wounded when pressure is excessive.Product higher for temperature, it is orthopedic after by
In cooling meat will cause secondary deformation the problems such as.
Also, currently known orthopedic process and fine process are independent process, can not be by one set of die complete independently, wave
Take production equipment and productivity, occupy production space and influences production efficiency.It is the orthopedic need of product that it, which can not merge main cause,
Product is bent, product shape follows mold closure to change always, but fine blanking die needs product complete under static environment
At.And fine blanking die cutter runs can generate interference to orthopedic process up and down, flatness and planarity adjustment is influenced, so two
Process can not carry out simultaneously.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of orthopedic synthesis molds with fine of product, and there is realization to rectify
Two processes of shape and fine by one set of die complete independently, while improve orthopedic precision and avoid product excessively high temperature the advantages of.
A kind of orthopedic synthesis mold with fine of product, including host upper mold, the master immediately below the host upper mold
Machine lower die is set to the orthopedic component of the host upper mold, is set to the punching upper die mechanism of the host upper mold, and setting
In the punching lower die mechanism of the host lower die；
The punching upper die mechanism includes the upper oil cylinder being set to above host upper mold, with the upper oil cylinder lower output side
Connected push plate, is connected and the upper push-rod with the orthopedic member parallel with the push plate bottom, with upper push-rod bottom phase
Cutterhead even, and it is set to the stamping knife of the cutterhead lower end；The orthopedic component passes through the cutterhead；
The punching lower die mechanism includes the lower oil cylinder for being set to host lower die bottom, defeated with the lower oil cylinder top
The connected lower push-rod of outlet, and the support stamping knife being connected with the lower push-rod upper top.
Compared with the existing technology, product of the present invention is orthopedic and the synthesis mold of fine, using cutterhead separated structure,
In the case where not interfering host main structure, cutter and its fixed structure are changed to oriented movable structure, and by separate unit
Control, so that the phenomenon that avoiding deformation of products that orthopedic and fine is caused to interfere with each other, realizes orthopedic and two processes of fine by one
Mold complete independently forms energy-efficient coherent process.Also, it ensure that two processes can be debugged individually simultaneously
Convenience.
Further, the orthopedic component includes that sequentially connected extruding copperhead, fixture nut, guide rod, spring are fixed
Bar and spring；The guide rod is hollow cylinder structure；The extruding copperhead is fixed on the guiding by the fixture nut
Bar；The spring is fixed on the guide rod by the spring fixed link, to keep orthopedic component pressure fine-tuning, solves
Artificial orthopedic precision is insufficient, and the technical problem that mechanical orthopedic intensity is excessive.
Further, the orthopedic component is multiple, and the orthopedic work to product many places can be completed in a procedure.
It further, further include the spray tube for being set to the host upper mold, for cooling down to this equipment and product,
The temperature of high-temperature product is reduced to avoid product high temperature secondary deformation.
It further, further include flow divider；The spray tube is multiple, and is connected respectively with the flow divider, so as to
Spraying cooling is carried out to this equipment and product from multiple angles, enhances cooling effect.
Further, the orthopedic component further includes the pressure sensor for being set to the spring fixed link, for sensing
The pressure size of the orthopedic component, the foundation to record and as optical force is adjusted, improves orthopedic accuracy and orthopedic matter
Amount.
Further, the host upper mold is equipped with thermometer, for sensing the temperature of this equipment and product, sprays as using
The foundation of shower pipe cooling, keeps cooling effect more accurate.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is inventive die structural schematic diagram；
Fig. 2 is the orthopedic component structure diagram of the present invention；
Fig. 3 is the orthopedic component stereogram exploded view of the present invention；
Fig. 4 is inventive die stereoscopic schematic diagram；
Fig. 5 is product of the present invention feeding inlet schematic diagram；
Fig. 6 is the partial enlarged view of A in Fig. 5.
1. host upper mold；11. fixed plate；2. host lower die；3. orthopedic component；31. squeezing copperhead；32. fixture nut；
33. guide pipe；34. spring fixed link；35. spring；41. upper oil cylinder；42. push plate；43. upper push-rod；44. cutterhead；45. stamping knife；
51. lower oil cylinder；52. lower push-rod；53. supporting stamping knife；61. spray tube；62. flow divider；7. pneumatic cleaning device.
Specific embodiment
Please refer to attached drawing 1, a kind of product is orthopedic and the synthesis mold of fine, including host upper mold 1, host lower die 2, orthopedic
Component 3, punching upper die mechanism and punching lower die mechanism.Host lower die 2 is located at immediately below host upper mold 1.Orthopedic component 3 is set to
Host upper mold 1.The punching upper mold is set to host upper mold 1.The punching lower die mechanism is set to host lower die 2.On host
Mould 1, host lower die 2 and orthopedic component 3 be combined into it is a set of can independently operated orthopedic mold.The punching upper die mechanism and described
Punching lower die mechanism be combined into it is a set of can independently operated die cutting die.Product is placed in host lower die 2, first carries out orthopedic place
Reason, is then punched out processing.
Host upper mold 1 is connected with host lower die 2 by multiple guide posts.The top of host lower die 2 is equipped with and is used to support product
Supporting surface.Orthopedic component 3 is set to 1 lower end of host upper mold.
The upper die mechanism includes upper oil cylinder 41, push plate 42, upper push-rod 43, cutterhead 44 and stamping knife 45.Upper oil cylinder 41 is located at
1 top of host upper mold.Push plate 42 is connected with 41 lower output side of upper oil cylinder and is located at 1 top of host upper mold.Upper push-rod 43 with push away
42 bottom of plate is connected and is inserted among host upper mold 1, parallel with orthopedic component 3.Cutterhead 44 is connected with 43 bottom of upper push-rod, is equipped with
Multiple circular holes come round up and down and diameter and orthopedic component match, orthopedic component 3 pass through cutterhead 44 by the circular hole.Stamping knife
45 are set to 44 lower end of cutterhead.
The punching upper die mechanism includes lower oil cylinder 51, lower push-rod 52 and support stamping knife 53.Lower oil cylinder 51 is set to host
1 bottom of lower die.Lower push-rod 52 is connected with lower 51 upper output terminal of oil cylinder, and is inserted into host lower die 2.Support stamping knife and lower push-rod
52 upper tops are connected.
Please refer to attached drawing 2 and 3, orthopedic component 3 include sequentially connected extruding copperhead 31, fixture nut 32, guide rod 33,
Spring fixed link 34 and spring 35.Guide rod 33 is hollow cylinder structure, is equipped with and squeezes copperhead 31 and 34 phase of spring fixed link
Matched screw thread.The one end for squeezing copperhead 31 is threadedly coupled with guide rod 33, and the other end is used to carry out orthopedic processing to product.Gu
Determine nut 32 and be equipped with the screw thread to match with extruding copperhead 31, copperhead 31 will be squeezed and be fixed on guide rod 33.Spring fixed link 34
One end is threadedly coupled with guide rod 33, and the other end is long rod-shape, is inserted into spring 35.Spring 35 is fixed by spring fixed link
In guide rod 33.
Preferably, orthopedic component 3 has multiple, carries out orthopedic processing for the different parts of product respectively.Further preferably
Ground, orthopedic component 3 further include the pressure sensor being set in spring fixed link 34, and the pressure for sensing orthopedic component 3 is big
It is small.
Attached drawing 4 is please referred to, host upper mold 1 is equipped with fixed plate 11.Orthopedic component 3 and upper push-rod 43 both pass through fixed plate 11.
Fixed plate 11 is equipped with multiple spray tubes 61, flow divider 62 and solenoid valve.One end of spray tube 61 is connected with flow divider 62 respectively,
The other end is each passed through fixed plate 11 and is directed toward orthopedic component 3 and product.Flow divider 62 is connected with solenoid valve.Preferably, fixed
Plate 11 is additionally provided with thermometer, for sensing the temperature of this equipment and product.
Preferably, host lower die 2 is equipped with pneumatic cleaning device 7, for handling waste material.
Please refer to attached Figures 5 and 6, it is preferable that be equipped with the feeding inlet of rounded structure at 2 top support surface of host lower die, make to answer
Power centrostigma moves back, and avoids deformation of products.Right part structure refers to product in Fig. 5.
Working principle:
For orthopedic component 3, copperhead 31, fixture nut 32, guide rod 33, spring fixed link 34 and spring will be squeezed first
35 are sequentially connected, and then squeeze 31 extension elongation of copperhead control 35 shrinkage of spring by adjusting, make spring 35 according to shrinkage
Different pressure is provided, is fixed after the completion of adjusting with fixture nut 2, to control the crushing strength of orthopedic component 3.
When use when this equipment, product is put into the supporting surface at 2 top of host lower die first, then controls host upper mold 1
Downlink drives orthopedic component 3 to compress product, so that product is in orthopedic state, is close to supporting surface, forms a stable shape
State.
After being pressed to stroke control point, lower 51 uplink of oil cylinder is controlled, drives lower push-rod 52 that stamping knife 53 will be supported to push to produce
Product face is punched out support.Lower 51 pressure maintaining of oil cylinder, keeps to product support force after supporting stamping knife 53 to walk to stroke limit.
After pressure maintaining starting, 41 downlink of upper oil cylinder is controlled, driving push plate 42 to squeeze upper push-rod 43 will be under cutterhead 44 and stamping knife 45
It pushes away, fine process is carried out to product.
After fine Overstroke, 41 pressure maintaining of upper oil cylinder carries out 10 seconds orthopedic fixations.
Meanwhile by solenoid valve control water supply time, water flows to spray tube by flow divider 62, is overregulated spray tube 61
Angle to product carry out spraying cooling, reduce product temperature, avoid product in the cooling strain again of vacant environment.
After 10 seconds, upper oil cylinder 41 is retreated, and is retreated stamping knife 45 preferentially using the lasting pressure of orthopedic component 3, is avoided orthopedic
Rebound and stamping knife uplink link closely product cause deformation the problem of.Finally, lower oil cylinder 51 recycles, a whole set of process is completed, takes out and produces
Product.
Compared with the existing technology, product of the present invention is orthopedic and the synthesis mold of fine, using cutterhead separated structure,
In the case where not interfering host main structure, cutter and its fixed structure are changed to and state support surely to bascule, and by only
Vertical unit control, so that the phenomenon that avoiding deformation of products that orthopedic and fine is caused to interfere with each other, realizes orthopedic and two works of fine
Sequence forms energy-efficient coherent process by one set of die complete independently.Also, which ensure that two processes can be debugged individually
Convenience.Meanwhile orthopedic component, using elastic compression assemblies, so that it is insufficient to solve artificial orthopedic precision, and machinery is orthopedic
The excessive technical problem of intensity.Also, it forms cooling system by using spray assemblies, avoids product high temperature secondary deformation.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more, " more
Kind " it is meant that two or more.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (7)
1. a kind of orthopedic synthesis mold with fine of product, it is characterised in that: including host upper mold, be located at the host upper mold just
The host lower die of lower section is set to the orthopedic component of the host upper mold, is set to the punching upper die mechanism of the host upper mold,
And it is set to the punching lower die mechanism of the host lower die；
The punching upper die mechanism includes the upper oil cylinder being set to above host upper mold, is connected with the upper oil cylinder lower output side
Push plate, be connected with the push plate bottom and the upper push-rod with the orthopedic member parallel, be connected with the upper push-rod bottom
Cutterhead, and it is set to the stamping knife of the cutterhead lower end；The orthopedic component passes through the cutterhead；
The punching lower die mechanism includes the lower oil cylinder for being set to host lower die bottom, with the lower oil cylinder upper output terminal
Connected lower push-rod, and the support stamping knife being connected with the lower push-rod upper top.
2. product according to claim 1 is orthopedic and the synthesis mold of fine, it is characterised in that: the orthopedic component includes
Sequentially connected extruding copperhead, fixture nut, guide rod, spring fixed link and spring；The guide rod is hollow cylinder structure；
The extruding copperhead is connect with the guide rod thread, and is fixed on the guide rod by the fixture nut；The spring
The guide rod is fixed on by the spring fixed link.
3. the orthopedic synthesis mold with fine of product according to claim 2, it is characterised in that: the orthopedic component is more
It is a.
4. product according to claim 1 is orthopedic and the synthesis mold of fine, it is characterised in that: further include be set to it is described
The spray tube of host upper mold.
5. the orthopedic synthesis mold with fine of product according to claim 4, it is characterised in that: further include flow divider；Institute
It is multiple for stating spray tube, and is connected respectively with the flow divider.
6. the orthopedic synthesis mold with fine of product according to claim 3, it is characterised in that: the orthopedic component also wraps
The pressure sensor for being set to the spring fixed link is included, for sensing the pressure size of the orthopedic component.
7. the orthopedic synthesis mold with fine of product according to claim 5, it is characterised in that: the host upper mold is equipped with
Thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963018.XA CN109047501A (en) | 2018-08-22 | 2018-08-22 | A kind of orthopedic synthesis mold with fine of product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963018.XA CN109047501A (en) | 2018-08-22 | 2018-08-22 | A kind of orthopedic synthesis mold with fine of product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109047501A true CN109047501A (en) | 2018-12-21 |
Family
ID=64755836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810963018.XA Pending CN109047501A (en) | 2018-08-22 | 2018-08-22 | A kind of orthopedic synthesis mold with fine of product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109047501A (en) |
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| CN202291045U (en) * | 2011-10-26 | 2012-07-04 | 铜陵百瑞豪科技有限公司 | Compound die for trimming and punching |
| CN203972720U (en) * | 2014-07-29 | 2014-12-03 | 谢良 | Cross axle forges processing compound Die Forging device |
| CN106040849A (en) * | 2016-08-18 | 2016-10-26 | 新昌县羽林街道君博机械厂 | Compound forming die for machining circlips of automobile shock absorbers |
| CN107297420A (en) * | 2017-06-19 | 2017-10-27 | 万向钱潮股份有限公司 | A kind of trimming shaping composite die |
| CN207057434U (en) * | 2017-07-12 | 2018-03-02 | 东莞竹田金属制品有限公司 | A kind of two-sided smooth automobile metal plate work stamping modular mold of fillet |
| CN207103725U (en) * | 2017-08-24 | 2018-03-16 | 浙江跃进机械有限公司 | A kind of compound trimming die tool for producing connecting rod |
| CN207521551U (en) * | 2017-11-19 | 2018-06-22 | 扬州嵘泰精密压铸有限公司 | A kind of steering gear housing punching shaping combination unit |
| CN208825340U (en) * | 2018-08-22 | 2019-05-07 | 广东鸿特精密技术（台山）有限公司 | A kind of orthopedic synthesis mold with fine of product |
-
2018
- 2018-08-22 CN CN201810963018.XA patent/CN109047501A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3568555A (en) * | 1968-09-11 | 1971-03-09 | Porter Precision Products Co | Guidepost construction for die sets |
| CN201030405Y (en) * | 2007-04-24 | 2008-03-05 | 万向集团公司 | Trigeminal side cut punching shaping composite die |
| CN201186326Y (en) * | 2008-05-09 | 2009-01-28 | 郭永环 | Composite punching mold |
| CN202291045U (en) * | 2011-10-26 | 2012-07-04 | 铜陵百瑞豪科技有限公司 | Compound die for trimming and punching |
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| CN107297420A (en) * | 2017-06-19 | 2017-10-27 | 万向钱潮股份有限公司 | A kind of trimming shaping composite die |
| CN207057434U (en) * | 2017-07-12 | 2018-03-02 | 东莞竹田金属制品有限公司 | A kind of two-sided smooth automobile metal plate work stamping modular mold of fillet |
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