CN108787896A - A kind of working method of the Bending Mould with springback compensation function - Google Patents
A kind of working method of the Bending Mould with springback compensation function Download PDFInfo
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- CN108787896A CN108787896A CN201810953996.6A CN201810953996A CN108787896A CN 108787896 A CN108787896 A CN 108787896A CN 201810953996 A CN201810953996 A CN 201810953996A CN 108787896 A CN108787896 A CN 108787896A
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- 238000005452 bending Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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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
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention relates to mould applications, the working method of specifically a kind of Bending Mould with springback compensation function, Bending Mould includes hydraulic device and lower die holder, the hydraulic device is mounted on the side of lower die holder, the hydraulic device is equipped with upper mold, the upper mold is equipped with die cavity, the upper mold is located at the surface of lower die holder and the both ends of upper mold and is equipped with deviation correction mechanism, the lower die holder is equipped with rebounding mechanism, the upper end of the rebounding mechanism is equipped with lower mold, the both ends of the lower mold are equipped with Bending Mould, the upper surface of two Bending Moulds is arc-shaped, the side of two Bending Moulds is equipped with compensation mechanism.The beneficial effects of the invention are as follows can prevent workpiece bending part overcompensation, while compensation bending angle can be adjusted according to the material of workpiece so that its scope of application is wider.
Description
Technical field
The present invention relates to mould applications, the working method of specifically a kind of Bending Mould with springback compensation function.
Background technology
In the process of workpiece, it is often necessary to carry out bending processing to workpiece, so that workpiece is formed other shapes, still
Workpiece is since the elastic force of its own has certain rebound effect after bending, and leading to many workpiece, bending angle reaches upon rebound
Less than standard, cause workpiece unqualified.
China Patent No. is that CN105396914B discloses a kind of bending springback compensation mold, and upper mold includes upper die holder and convex
Mould, punch-pin has base angle compatible with product bending angle, and compensates angle with bending；Lower die includes rotatable cavity plate, can be turned
Dynamic cavity plate installation on the lower die holder, there is bending slot compatible with punch-pin base angle, lower die holder to be equipped with to rotatable recessed
The first resetting-mechanism that mould resets.Centering block is installed on rotatable cavity plate.In mold closing course, upper mold moves from top to bottom,
Punch-pin compresses stripper plate, and stripper plate drives rotatable cavity plate rotation, is closed initial stage, centering block is rotated with cavity plate and swung, with mould
Tool, which is closed, to carry out, and the pushing block in upper mold starts to contact with centering block.When mold is closed into position, pushing block is located in centering block
Side, and its lower end is resisted against on the medial surface of centering block.The mold squeezes swinging cavity die by punch-pin and centering block makes swinging cavity die
The both ends of workpiece are squeezed with centering block so that the bending two ends of workpiece have a certain degree, but during actual processing, by
Different in the material of workpiece, the offset angle for resulting in the need for alignment bending part is different, and above-mentioned mold can not change offset angle,
The workpiece bending of unlike material can only be adapted to by replacing swinging cavity die and centering block, cause its application range smaller.
Secondly, the workpiece made of the material of the same race has certain area in terms of offset angle in use
Not, therefore identical bending angle can cause some workpiece bending part overcompensations, the workpiece of overcompensation that can also be stuck in punch-pin
On, influence the continue working of mold, and the method that workpiece of overcompensation is not handled in above-mentioned patent.
Invention content
The purpose of the present invention is to provide a kind of Bending Moulds with springback compensation function, to solve above-mentioned background technology
The problem of middle proposition.
The technical scheme is that：Including hydraulic device and lower die holder, the hydraulic device is mounted on the side of lower die holder
Side, the hydraulic device are equipped with upper mold, and the upper mold is equipped with die cavity, and the upper mold is located at the surface of lower die holder
And the both ends of upper mold are equipped with deviation correction mechanism, the lower die holder is equipped with rebounding mechanism, and the upper end of the rebounding mechanism is equipped with
The both ends of lower mold, the lower mold are equipped with Bending Mould, and the upper surface of two Bending Moulds is arc-shaped, two
The side of the Bending Mould is equipped with compensation mechanism.
In a preferred embodiment of the present invention, each deviation correction mechanism include correction block, correction bar, the first spring and
Telescopic rod, the correction block are rotatably connected in die cavity, and one end and the correction block of the correction bar are integrally formed, the upper mold
It is equipped with telescopic hole, first spring is mounted in telescopic hole, and one end of the telescopic rod is plugged in telescopic hole and with the
One end of one spring is fixedly connected, and the other end of the telescopic rod is equipped with the correction wheel being rotatablely connected with it.
In a preferred embodiment of the present invention, each deviation correction mechanism includes correction block, correction bar, telescopic rod, tooth
Wheel and correction motor, the correction block are rotatably connected in die cavity, and one end and the correction block of the correction bar are integrally formed, described
Upper mold is equipped with telescopic hole, and the telescopic rod is mounted in telescopic hole and telescopic rod is equipped with rack, on the telescopic rod
Rack and pinion engages, and correction motor is fixedly connected with upper mold and the output end for motor of rectifying a deviation is fixedly connected with gear.
In a preferred embodiment of the present invention, the rebounding mechanism includes that several spring back columns and several second springs,
The lower die holder is equipped with several rebound holes, and the lower end of several rebound columns is plugged on respectively in several rebound holes, several
A second spring is respectively sleeved on several rebound columns.
In a preferred embodiment of the present invention, the lower die holder is equipped with several limited blocks, and all limited blocks are under
Die holder is integrally formed.
In a preferred embodiment of the present invention, each compensation mechanism includes lifting platform and compensation component, the liter
Drop platform is located above one end of lower die holder, and the compensation component is mounted on the upper end of lifting platform.
In a preferred embodiment of the present invention, the compensation component includes sliding rail, compensation cylinder, sliding shoe and compensation
Block, the compensation cylinder is in being horizontally set on lifting platform, and the sliding rail is mounted on the upper end of lifting platform and sliding rail is located at compensation
The front of cylinder, the sliding shoe is fixedly connected with the output end of compensation cylinder and the lower end of sliding shoe is slidably matched with sliding rail,
One end of the compensation block and sliding shoe is hinged.
In a preferred embodiment of the present invention, the side wall of the die cavity is equipped with several notches, is set on the lower mold
There are several convex blocks, several described convex blocks are corresponded with several described notches.
In a preferred embodiment of the present invention, two Bending Moulds are fixedly connected by bolt with lower die holder.
The present invention provides a kind of Bending Mould with springback compensation function herein by improving, compared with prior art,
Have the advantages that as follows improve and：
（1）The both ends of workpiece can be squeezed by the cooperating of two correction components, so as to avoid workpiece mistake
Degree compensation, prevents workpiece card on the upper mold；
（2）The stroke of cylinder is compensated by adjusting can adjust the offset angle that compensation component drives workpiece bending, to right
When the workpiece of unlike material is processed, offset angle can be adjusted so that be in standard state after workpiece rebound so that the mould
Tool is suitable for being processed the workpiece of a variety of unlike materials；
（3）Lower die holder is connected with Bending Mould by bolt, the Bending Mould different with replacement easy to disassemble, to change work
The diameter of part bending part.
Description of the drawings
The present invention is further explained with reference to the accompanying drawings and examples:
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the vertical view of the present invention；
Fig. 3 is sectional views of the Fig. 2 along line A-A；
Fig. 4 is the enlarged drawing at B in Fig. 3；
Fig. 5 is the dimensional structure diagram of compensation mechanism in the present invention；
Fig. 6 is the vertical view of the embodiment of the present invention two；
Fig. 7 is sectional views of the Fig. 6 along line C-C；
Reference sign：Hydraulic device 1, lower die holder 2, upper mold 3, die cavity 4, deviation correction mechanism 5, rectify a deviation block 5a, correction bar 5b,
First spring 5c, telescopic rod 5d, telescopic hole 5e, correction wheel 5f, rebounding mechanism 6 spring back column 6a, second spring 6b, spring back hole 6c,
Lower mold 7, Bending Mould 8, compensation mechanism 9, lifting platform 9a, compensation component 9b, sliding rail 9b1 compensate cylinder 9b2, sliding shoe
9b3, compensation block 9b4, gear 10, motor 11 of rectifying a deviation, rack 12, limited block 13, notch 14, convex block 15.
Specific implementation mode
Below in conjunction with attached drawing 1 to Fig. 7, the present invention is described in detail, technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
The present invention provides a kind of Bending Mould with springback compensation function herein by improving；
Embodiment one：As Figure 1-Figure 5, including hydraulic device 1 and lower die holder 2, the hydraulic device 1 are mounted on lower die holder 2
Side, the hydraulic device 1 is equipped with upper mold 3, and the upper mold 3 is equipped with die cavity 4, and the upper mold 3 is located at lower die
The surface of seat 2 and the both ends of upper mold 3 are equipped with deviation correction mechanism 5, and the lower die holder 2 is equipped with rebounding mechanism 6, the rebound
The upper end of mechanism 6 is equipped with lower mold 7, and the both ends of the lower mold 7 are equipped with Bending Mould 8, two Bending Moulds 8 it is upper
End face is arc-shaped, and the side of two Bending Moulds 8 is equipped with compensation mechanism 9；Hydraulic device 1 uses existing apparatus,
It is moved down by 1 task driven upper mold 3 of hydraulic device, upper mold 3 is by the workpiece one on rebounding mechanism 6 and rebounding mechanism 6
It rises and pulls down, when workpiece is moved at two Bending Moulds 8, pass through upper mold 3, lower mold 7 and two 8 shapes of Bending Mould
At groove body workpiece is squeezed so that the both ends bending of workpiece is right by two compensation mechanisms 9 later to certain angle
The both ends of workpiece carry out further bending so that are in normal place after the both ends rebound of workpiece.
Each deviation correction mechanism 5 includes correction block 5a, correction bar 5b, the first spring 5c and telescopic rod 5d, described to entangle
Inclined block 5a is rotatably connected in die cavity 4, and one end and the correction block 5a of the correction bar 5b are integrally formed, and are set on the upper mold 3
There are telescopic hole 5e, the first spring 5c in telescopic hole 5e, one end of the telescopic rod 5d is plugged in telescopic hole 5e
And be fixedly connected with one end of the first spring 5c, the other end of the telescopic rod 5d is equipped with the correction wheel 5f being rotatablely connected with it；
At work, the both ends of workpiece are bent under the extruding of two Bending Moulds 8, while just partially dry one end is pressed on workpiece,
The block 5a that rectifies a deviation drives correction bar 5b rotations, while the side of correction bar 5b is pressed on correction wheel 5f and presses the first spring 5c
Contracting so that telescopic rod 5d enters in telescopic hole 5e, if workpiece overcompensation, can push telescopic rod 5d by the first spring 5c
It stretches out, the bending part of workpiece is pushed into normal place, while the overcompensation of workpiece both ends can be avoided to be stuck on upper mold 3.
The rebounding mechanism 6 includes several rebound column 6a and several second springs 6b, if the lower die holder 2 is equipped with
The lower end of dry rebound hole 6c, several rebound columns 6a are plugged on respectively in several rebounds hole 6c, several second springs 6b
It is respectively sleeved on several rebound columns 6a；Lower mold 7 is pushed to move down when upper mold 3 moves down, lower 7 lower end of mold
Second spring 6b shrink so that rebound bar collapses into rebound hole 6c, after Bending Processing, pass through second spring 6b's
Elastic force acts on so that the 6a risings of rebound column jack up lower mold 7, while also jacking up workpiece, and workpiece is avoided to be fastened on lower die holder 2
Upper end, be convenient for blanking.
The lower die holder 2 is equipped with several limited blocks 13, and all limited blocks 13 are integrally formed with lower die holder 2；Pass through
Limited block 13 can limit the position of lower mold 7 so that the both ends of lower mold 7 maintain an equal level with two Bending Moulds 8 respectively, avoid down
Mold 7 is excessively high or too low, leads to occur many places bending on workpiece.
Each compensation mechanism 9 includes that lifting platform 9a and compensation component 9b, the lifting platform 9a are located at lower die holder 2
Above one end, the compensation component 9b is mounted on the upper end of lifting platform 9a；It can adjust compensation component 9b's by lifting platform 9a
Level height, when the length at workpieces processing both ends is not meanwhile, it is capable to adjust the height of compensation component 9b to the both ends to workpiece
Compensate bending.
The compensation component 9b includes sliding rail 9b1, compensation cylinder 9b2, sliding shoe 9b3 and compensation block 9b4, the compensation
Cylinder 9b2 is in being horizontally set on lifting platform 9a, and the sliding rail 9b1 is mounted on the upper end of lifting platform 9a and sliding rail 9b1 is positioned at benefit
Repay the front of cylinder 9b2, the sliding shoe 9b3 be fixedly connected with the output end of compensation cylinder 9b2 and the lower end of sliding shoe 9b3 with
Sliding rail 9b1 is slidably matched, and one end of the compensation block 9b4 and sliding shoe 9b3 is hinged；It is slided by compensating cylinder 9b2 Work Promotes
Motion block 9b3 is moved forward, the sliding rail 9b1 of the lower ends sliding shoe 9b3 with its be slidably matched can either limit slippage block 9b3 sliding side
To, while sliding rail 9b1 can also drive compensation block 9b4 to move forward to work its supporting role of sliding shoe 9b3, sliding shoe 9b3
One end of the bending of part is squeezed, and bending is compensated to one end of workpiece under the action of compensation block 9b4 and correction bar 5b,
When compensation block 9b4 and correction bar 5b clamp workpiece and push workpiece bows by compensation block 9b4, due to the change of workpiece bows angle
Change so that the angle between workpiece and horizontal plane constantly changes, and therefore, the compensation block 9b4 hinged with sliding shoe 9b3 can turn
So that the side of compensation block 9b4 is bonded with workpiece always during dynamic, avoid the dog-ear of compensation block 9b4 from compressing workpiece and cause workpiece
Damage.
The side wall of the die cavity 4 is equipped with several notches 14, and the lower mold 7 is equipped with several convex blocks 15, several
A convex block 15 is corresponded with several described notches 14；All convex blocks 15 are symmetricly set on the both sides of lower mold 7, are convenient for
Workpiece is fastened on to the upper end of lower mold 7, the position of workpiece in process is also avoided to shift, processing is caused to fail,
Notch 14 on 4 side wall of die cavity is used for and convex block 15 engages, and is avoided convex block 15 from being spaced apart upper mold 3 and lower mold 7, is influenced to roll over
The progress of curved processing.
Two Bending Moulds 8 are fixedly connected by bolt with lower die holder 2；If necessary to which workpiece is bent into difference
The bending of diameter by the fast quick-detach Bending Mould 8 of bolt and can install new Bending Mould 8.
The operation principle of the present invention：The offset angle that the needs of workpiece bending part carry out is determined by calculation, later, by work
Part is placed on lower mold 7, and providing power drive upper mold 3 by hydraulic device 1 moves down, and upper mold 3 and lower mold 7 will
Therebetween, while upper mold 3 pushes workpiece and lower mold 7 to move down to Workpiece clamping, passes through upper mold 3,7 and of lower mold
Two Bending Moulds 8 bend the both ends of workpiece, later by compensating cylinder 9b2 Work Promote sliding shoes 9b3 movements, sliding shoe
9b3 drives compensation block 9b4 movements, compensation block 9b4 to push one end of tool, compensates the stroke of cylinder 9b2 by setting to limit
Compensation block 9b4 pushes the angle of tool one end bending to make lower die by the elastic force of the first spring 5c after completing Bending Processing
Tool 7, which moves up, jacks up workpiece, convenient for carrying out blanking to workpiece.
Embodiment two：As shown in Figure 6 and Figure 7, each deviation correction mechanism 5 includes correction block 5a, correction bar 5b, stretches
Bar 5d, gear 10 and correction motor 11, the correction block 5a is rotatably connected in die cavity 4, one end of the correction bar 5b with entangle
Inclined block 5a is integrally formed, and the upper mold 3 is equipped with telescopic hole 5e, and the telescopic rod 5d is mounted in telescopic hole 5e and telescopic rod
5d is equipped with rack 12, and the rack 12 on the telescopic rod 5d is engaged with gear 10, and correction motor 11 is fixedly connected with upper mold 3
And the output end for motor 11 of rectifying a deviation is fixedly connected with gear 10；In a free state, correction motor 11 does not work, and gear 10 can
It is freely rotated, to which when telescopic rod 5d thinks to move in telescopic hole 5e, gear 10 can rotate, so that gear 10 will not prevent
Rack 12 is moved into telescopic hole 5e, is rotated later by the work band moving gear 10 of motor 11 of rectifying a deviation so that telescopic rod 5d is outside
Movement jacks up forward one end of workpiece, is compressed to the workpiece excessively rectified a deviation, workpiece is avoided to be stuck on upper mold 3.
Correction component in embodiment one is worked by the elastic force of the first spring 5c, if the hardness of workpiece is larger, effect
Fruit may be poor, but for the lower workpiece of hardness, can still reach its effect, while can be energy saving, implements
Correction component in example two is worked by motor 11 of rectifying a deviation, and power is provided by correction motor 11, so as to larger to hardness
Workpiece is handled, and both there are advantage and disadvantage, can be selected according to actual conditions.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
1. a kind of working method of the Bending Mould with springback compensation function, it is characterised in that：Including hydraulic device（1）With under
Die holder（2）, the hydraulic device（1）Mounted on lower die holder（2）Side, the hydraulic device（1）It is equipped with upper mold（3）,
The upper mold（3）It is equipped with die cavity（4）, the upper mold（3）Positioned at lower die holder（2）Surface and upper mold（3）Two
End is equipped with deviation correction mechanism（5）, the lower die holder（2）It is equipped with rebounding mechanism（6）, the rebounding mechanism（6）Upper end be equipped with
Lower mold（7）, the lower mold（7）Both ends be equipped with Bending Mould（8）, two Bending Moulds（8）Upper surface it is equal
It is arc-shaped, two Bending Moulds（8）Side be equipped with compensation mechanism（9）；Working method includes the following steps：Pass through
It calculates and determines that workpiece is placed on lower mold by the offset angle that the needs of workpiece bending part carry out later（7）On, pass through hydraulic pressure
Device（1）Power drive upper mold is provided（3）It moves down, upper mold（3）With lower mold（7）By Workpiece clamping the two it
Between, while upper mold（3）Push workpiece and lower mold（7）It moves down, passes through upper mold（3）, lower mold（7）With two bendings
Mold（8）The both ends of workpiece are bent, later by compensating cylinder（9b2）Work Promote sliding shoe (9b3) is mobile, sliding shoe
(9b3) drives compensation block (9b4) mobile, and compensation block (9b4) pushes one end of tool, and the row of cylinder (9b2) is compensated by setting
Journey pushes the angle of tool one end bending to pass through the first spring (5c) after completing Bending Processing to limit compensation block (9b4)
Elastic force makes lower mold (7) moves up to jack up workpiece, convenient for carrying out blanking to workpiece.
2. the working method of the Bending Mould according to claim 1 with springback compensation function, it is characterised in that：Each
The deviation correction mechanism（5）It include correction block（5a）, correction bar（5b）, the first spring（5c）And telescopic rod（5d）, the correction
Block（5a）It is rotatably connected on die cavity（4）It is interior, the correction bar（5b）One end with correction block（5a）It is integrally formed, the upper mold
（3）It is equipped with telescopic hole（5e）, first spring（5c）Mounted on telescopic hole（5e）It is interior, the telescopic rod（5d）One end insert
It is connected on telescopic hole（5e）It is interior and with the first spring（5c）One end be fixedly connected, the telescopic rod（5d）The other end be equipped with and its
The correction wheel of rotation connection（5f）.
3. the working method of the Bending Mould according to claim 1 with springback compensation function, it is characterised in that：Each
The deviation correction mechanism（5）It include correction block（5a）, correction bar（5b）, telescopic rod（5d）, gear（10）With correction motor（11）,
The correction block（5a）It is rotatably connected on die cavity（4）It is interior, the correction bar（5b）One end with correction block（5a）It is integrally formed, institute
State upper mold（3）It is equipped with telescopic hole（5e）, the telescopic rod（5d）Mounted on telescopic hole（5e）Interior and telescopic rod（5d）On set
There is rack（12）, the telescopic rod（5d）On rack（12）With gear（10）Engagement, motor of rectifying a deviation（11）With upper mold（3）Gu
Fixed connection and correction motor（11）Output end and gear（10）It is fixedly connected.
4. the working method of the Bending Mould according to claim 1 with springback compensation function, it is characterised in that：It is described
Rebounding mechanism（6）Including several rebound columns（6a）With several second springs（6b）, the lower die holder（2）It is equipped with several
Spring back hole（6c）, several rebound columns（6a）Lower end be plugged on respectively several rebound hole（6c）It is interior, several second springs
（6b）It is respectively sleeved at several rebound columns（6a）On.
5. the working method of the Bending Mould according to claim 4 with springback compensation function, it is characterised in that：It is described
Lower die holder（2）It is equipped with several limited blocks（13）, all limited blocks（13）And lower die holder（2）It is integrally formed.
6. the working method of the Bending Mould according to claim 4 with springback compensation function, it is characterised in that：Each
The compensation mechanism（9）It include lifting platform（9a）And compensation component（9b）, the lifting platform（9a）Positioned at lower die holder（2）One
End top, the compensation component（9b）Mounted on lifting platform（9a）Upper end.
7. the working method of the Bending Mould according to claim 6 with springback compensation function, it is characterised in that：It is described
Compensation component（9b）It include sliding rail（9b1）, compensation cylinder（9b2）, sliding shoe（9b3）And compensation block（9b4）, the compensation gas
Cylinder（9b2）In being horizontally set on lifting platform（9a）On, the sliding rail（9b1）Mounted on lifting platform（9a）Upper end and sliding rail
（9b1）Positioned at compensation cylinder（9b2）Front, the sliding shoe（9b3）With compensation cylinder（9b2）Output end be fixedly connected and
Sliding shoe（9b3）Lower end and sliding rail（9b1）It is slidably matched, the compensation block（9b4）With sliding shoe（9b3）One end it is hinged.
8. the working method of the Bending Mould according to claim 1 with springback compensation function, it is characterised in that：It is described
Die cavity（4）Side wall be equipped with several notches（14）, the lower mold（7）It is equipped with several convex blocks（15）, several institute
State convex block（15）With notch described in several（14）It corresponds.
9. the working method of the Bending Mould according to claim 1 with springback compensation function, it is characterised in that：Two
The Bending Mould（8）Pass through bolt and lower die holder（2）It is fixedly connected.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545673A (en) * | 2020-05-15 | 2020-08-18 | 杨玲 | LED lamp pin bending method |
| CN111545672A (en) * | 2020-05-15 | 2020-08-18 | 杨玲 | LED lamp pin bending machine |
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| CN102327991A (en) * | 2011-10-26 | 2012-01-25 | 无锡泰立特科技有限公司 | Carrying vehicle frame vertical coaming pressing die structure |
| CN103128147A (en) * | 2011-11-25 | 2013-06-05 | 北汽福田汽车股份有限公司 | Method and system of resilience correcting and machining of beam mold |
| CN202921710U (en) * | 2012-10-31 | 2013-05-08 | 亿和精密工业（中山）有限公司 | Stamping bending device for metal plate piece |
| CN103920820A (en) * | 2013-12-31 | 2014-07-16 | 祥鑫科技股份有限公司 | Die with bending rebound angular swing compensation structure |
| CN105396914A (en) * | 2015-12-31 | 2016-03-16 | 海信（山东）空调有限公司 | Bending springback compensation mold |
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| CN111545673A (en) * | 2020-05-15 | 2020-08-18 | 杨玲 | LED lamp pin bending method |
| CN111545672A (en) * | 2020-05-15 | 2020-08-18 | 杨玲 | LED lamp pin bending machine |
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