阅读说明：本技术 一种带回折多细pin插接端子高精度成型模具及方法 (High-precision forming die and method for multi-fine PIN plug-in terminal with reverse fold ) 是由 王建杭 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种带回折多细PIN插接端子高精度成型模具及方法,通过刀口剪切工站、去毛刺工站、调整PIN偏摆工站、预折工站及回折工站完成带回折多细PIN插接端子的成型,生产效率高,合格率高,通过此模具及方法实现了量产,效率及质量领先于国内同行业。(The invention discloses a high-precision forming die and method for a multi-fine PIN plug-in terminal with a reverse fold.)

1. A high-precision forming method for a multi-fine PIN plug terminal with a reverse fold is characterized by comprising the following specific steps:

s1: feeding the material belt into a die, and stamping and positioning;

s2: performing a knife edge shearing engineering on the product;

s3: the deburring engineering is carried out on the cut part of the product, so that the problem that PIN deflects to one side under the influence of burrs during subsequent material pressing in the bending engineering is solved;

s4: pre-folding the product for 60 degrees and 90 degrees in sequence;

s5: performing PIN deflection adjustment engineering at the product PIN;

s6: sequentially performing a back-folding molding process on the product, wherein the bending position of the back-folding molding process needs to be pressurized for 0.01 mm, so that the situation that the back-folding appearance is not full is improved;

s7: and shearing the product formed by folding back to make the finished product fall off.

2. A high-precision forming die with a folding multi-fine PIN plug-in terminal is characterized by comprising an upper die and a lower die and characterized by comprising a knife edge shearing station (1), a deburring station (2), an adjusting PIN deflection station (3), a pre-folding station (5) and a folding station (4) which are arranged in sequence; the knife edge shearing work station (1) comprises a four-section type shearing punch head (101) arranged on the upper die and a knife edge lower die insert (102) arranged on the lower die, the deburring work station (2) comprises a deburring and stripping insert (201) arranged on an upper die and a deburring lower die insert (202) arranged on a lower die, one end of the deburring lower die insert (202) is fixed on the lower die, the other end is provided with a plurality of deburring grooves (221), the folding work station (4) adopts a structure of slide block walking positioning, the folding work station (4) comprises a left bending slide block (401) and a right bending slide block (402) which are arranged on the lower die and a time-delay material pressing part (405) which is arranged on the upper die, the left bending slide block (401) and the right bending slide block (402) are correspondingly provided with a walking positioning slide block insert (403) and an adjusting slide block insert (404), and a product folding part is formed among the walking positioning slide block insert (403), the adjusting slide block insert (404) and the delayed pressing assembly (405).

3. The high-precision forming die according to claim 2, wherein the four-stage shearing punch (101) comprises a punch body (111) and a punch mounting seat (112), a first buffer portion (113) and a second buffer portion (114) are arranged between the punch body (111) and the punch mounting seat (112), and the burr groove (221) is a trapezoidal groove which is wide at the top and narrow at the bottom.

4. The high-precision forming die of claim 2, wherein the time-delay pressing assembly (405) comprises a time-delay pressing rod (451) and a time-delay pressing part (452) which are arranged on the upper die, and the time-delay pressing part (452) and the adjusting slide insert (404) are correspondingly arranged to be in a clearance position.

5. The high-precision forming die according to claim 2, wherein a stripper plate fixing pin (103) is provided at one side of the four-stage shearing punch (101), the stripper plate fixing pin (103) is located at the punch mounting seat (112) and the first buffer portion (113), and the stripper plate fixing pin (103) is fixed to the upper die.

6. The high precision molding die of claim 2, wherein the adjusting PIN runout station (3) comprises an adjusting runout stripper part (301) disposed on the upper die and an adjusting runout lower die part (302) disposed on the lower die, the adjusting runout stripper part (301) having a plurality of adjusting runout inserts (303) mounted thereon.

7. The high-precision forming die of claim 6, wherein a plurality of adjusting convex points (321) are arranged on the lower adjusting deflection die part (302), an adjusting insert (311) is arranged on the lower adjusting deflection stripping part (301), the adjusting insert (311) and the adjusting convex points (321) are partially overlapped in the vertical direction, and an adjusting convex point avoiding position (322) is arranged on one side of the adjusting insert (311).

8. The high-precision forming die of claim 2, wherein the folding station (4) further comprises an impact block (406) and an adjusting rod (407) which are arranged on the upper die, and stop blocks are arranged on two sides of the left bending slide block (401) and the right bending slide block (402).

9. The high-precision forming die of claim 8, wherein the stop block () comprises a left stop block (481), a right stop block (482) and a middle stop block (483), the left stop block (481), the right stop block (482) and a left bending slide block (401) and a right bending slide block (402) form a collision space correspondingly, and springs are arranged between the middle stop block (483) and the left bending slide block (401) and the right bending slide block (402).

10. The high-precision molding die according to claim 2, wherein the positioning slide insert (403) and the adjusting slide insert (404) are both of a "Z-like" structure, the bending ends of the positioning slide insert (403) and the adjusting slide insert (404) are contoured, and the adjusting slide insert (404) pressurizes the finished product by 0.01 mm.

Technical Field

The invention relates to the technical field of precision dies, in particular to a high-precision forming die and method for a multi-thin PIN plug-in terminal with a reverse fold.

Background

With the rapid development of socioeconomic and science and technology in China, the technology in the aspect of electronic products is more and more scientific and advanced, and people are more inclined to the direction of the requirements of multiple functions, centralized performance and convenience in carrying. Therefore, the development trend of the electronic products is smaller and smaller, and the electronic products are more and more precise and integrated. Therefore, the electronic components of interest in the electronic parts are also thin, small, and light, and require high precision.

At present, the precision requirement for the product with the back-folded multi-thin PIN plug-in terminal is as strict as the same, and the following problems exist in the production process: because fine PIN on the plug terminal is more, in the production shearing process, the cutting is difficult, and a large amount of burrs are easily produced at the PIN department of product, and the existence of burr then can cause product PIN to take place the beat, and turn back nonconforming and lead to the fact the unqualified scheduling problem of outward appearance.

In view of this, this patent application is specifically proposed.

Disclosure of Invention

The invention aims to provide a high-precision forming die and a method for a multi-fine PIN plug-in terminal with a reverse fold, and aims to solve the problems that the PIN plug-in terminal is not easy to cut, a product PIN is easy to deflect, and the reverse fold is unqualified in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a high-precision forming method for a multi-fine PIN plug terminal with a reverse fold comprises the following specific steps:

s1: feeding the material belt into a die, and stamping and positioning;

s2: performing a knife edge shearing engineering on the product;

s3: the deburring engineering is carried out on the cut part of the product, so that the problem that PIN deflects to one side under the influence of burrs during subsequent material pressing in the bending engineering is solved;

s4: pre-folding the product for 60 degrees and 90 degrees in sequence;

s5: performing PIN deflection adjustment engineering at the product PIN;

s6: sequentially performing a back-folding molding process on the product, wherein the bending position of the back-folding molding process needs to be pressurized for 0.01 mm, so that the situation that the back-folding appearance is not full is improved;

s7: and shearing the product formed by folding back to make the finished product fall off.

A high-precision forming die with a reverse-folding multi-fine PIN plug-in terminal comprises an upper die and a lower die, and comprises a knife edge shearing station, a deburring station, a PIN deflection adjusting station, a pre-folding station and a reverse-folding station which are sequentially arranged; the utility model discloses a material pressing device, including the mould that sets up in the four-section type of last mould, the deburring worker station is including setting up in the four-section type of last mould shearing drift and setting up in the edge of a knife of lower mould and insert the son, the deburring worker station is including setting up in the burring of last mould and take off the material and insert and set up in the burring of lower mould and insert the son, burring is inserted son one end down and is fixed at the lower mould, and the other end sets up a plurality of burring recesses, the structure of location is walked to inflection worker station adoption slider, the material part is pressed in the time delay that the left side was bent the slider that is bent the workstation including setting up in the left side of lower mould, the slider that bends right side and set up in the last mould, the slider that bends on a left side corresponds and sets up and walks location slider mold insert and adjustment slider mold insert, it forms product inflection portion to walk between location slider mold insert, adjustment slider mold insert and the material subassembly is pressed in time delay.

Preferably, the four-section type shearing punch comprises a punch body and a punch mounting seat, a first buffer part and a second buffer part are arranged between the punch body and the punch mounting seat, and the burr groove is a trapezoidal groove with a wide upper part and a narrow lower part.

Preferably, the time-delay material pressing assembly comprises a time-delay material pressing rod and a time-delay material pressing part, the time-delay material pressing part and the adjusting slide block insert are correspondingly provided with avoiding positions, and the lower end of the time-delay material pressing part is higher than the lower end face of the upper die.

Preferably, a stripper plate fixing pin is arranged on one side of the four-section type shearing punch and is located at the punch mounting seat and the first buffer portion, and the stripper plate fixing pin is fixed on the upper die.

Preferably, the PIN deflection adjusting work station comprises an adjustment deflection stripping part arranged on the upper die and an adjustment deflection lower die part arranged on the lower die, wherein a plurality of adjustment deflection inserts are mounted on the adjustment deflection stripping part, and the adjustment deflection inserts are 0.02 mm lower than the lower end face of the adjustment deflection stripping part.

Preferably, a plurality of adjusting salient points are arranged on the lower die part for adjusting the deflection, an adjusting insert is arranged on the material stripping part for adjusting the deflection, the adjusting insert is partially overlapped with the adjusting salient points in the vertical direction, and the adjusting salient points are arranged on one side of the adjusting insert for avoiding positions.

Preferably, the folding work station further comprises an impact block and an adjusting rod which are arranged on the upper die, and two sides of the left bending sliding block and two sides of the right bending sliding block are both provided with stop blocks.

Preferably, the stop block comprises a left stop block, a right stop block and a middle stop block, the left stop block, the right stop block, the left bending slide block and the right bending slide block are correspondingly formed into an impact space, and springs are arranged between the middle stop block and the left bending slide block and between the middle stop block and the right bending slide block.

Preferably, the walking and positioning slide block insert and the adjusting slide block insert are both of a Z-like structure, the bending end portions of the walking and positioning slide block insert and the adjusting slide block insert are profiled, and the adjusting slide block insert pressurizes the finished product for 0.01 mm.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides a high-precision forming die with a reverse-folding multi-fine PIN plug-in terminal, which changes the design mode of the conventional fine shearing punch and designs a sectional type shearing punch.

2. The invention is characterized in that a deburring work station is creatively arranged before pre-folding, the deburring work is carried out in a chamfering mode, and the phenomenon that the product deflects under the influence of burrs during subsequent bending is improved.

3. The product provided by the invention is provided with the reverse fold and a product with more fine PIN, the PIN deflection adjusting work station is arranged, a plurality of adjusting convex points are arranged on the lower die part of the deflection adjusting mould, when the mould is adjusted, the adjusting convex points are positioned at the root part of the PIN, the position of the PIN deflection is adjusted by dotting the root part of the PIN, meanwhile, the adjusting deflection insert is designed to be 0.02 mm lower than the lower end surface of the material stripping part of the deflection adjusting mould and is provided with the adjusting convex point avoiding position, at the moment, the adjusted PIN is not pressed when the mould is closed, and the phenomenon that the PIN deflection adjusting cannot be achieved due to over-tight pressing or no avoiding position is prevented.

4. The invention relates to a folding station, which comprises a left bending slide block, a right bending slide block and a time-delay material pressing part, wherein the left bending slide block and the right bending slide block are arranged on a lower die, the left bending slide block and the right bending slide block are correspondingly provided with a walking and positioning slide block insert and an adjusting slide block insert, and a product folding part is formed between the walking and positioning slide block inserts and the time-delay material pressing component. The upper die continues to press downwards to move the positioning slide block until the upper die moves to the position, then a material pressing rod in the time-delay material pressing assembly presses the time-delay material pressing part tightly, and finally the adjusting slide block also adjusts bending when the whole die is closed, so that the structure prevents the bending slide block from generating a large amount of scraps in the die assembly and bending processes to cause poor size and appearance, and meanwhile, the adjusting slide block insert is used for pressurizing a finished product for 0.01 mm; therefore, when the product is impacted and bent, the sliding block insert is adjusted to impact 0.01 more forwards, and the outer R of the product is fuller by extruding the product to be bent back and bent.

5. The invention provides a high-precision forming die and a process method for a multi-fine PIN plug-in terminal with a reverse fold.

Drawings

FIG. 1 is a schematic view of a mold clamping structure according to the present invention;

FIG. 2 is a schematic structural view of a four-stage shearing punch;

FIG. 3 is a schematic view of a conventional shear punch construction;

FIG. 4 is an enlarged schematic view of A in FIG. 1;

FIG. 5 is an enlarged schematic view of B of FIG. 1;

FIG. 6 is a schematic diagram of a product when PIN yaw is adjusted;

FIG. 7 is an enlarged schematic view of C of FIG. 1;

fig. 8 is an enlarged schematic view of D in fig. 7.

In the figure: 1. a knife edge shearing station; 101. a four-stage shearing punch; 111. a punch body; 112. a punch mounting seat; 113. a first buffer section; 114. a second buffer section; 102. a knife edge lower mold insert; 2. a deburring station; 201. deburring and material removing insert; 202. deburring and lower die insert; 221. deburring the grooves; 3. adjusting the PIN deflection work station; 301. adjusting the deflection stripping part; 311. adjusting the insert; 302. adjusting the deflection lower die part; 321. adjusting the salient points; 322. adjusting the convex points to avoid positions; 4. the folding station; 401. a left bending sliding block; 402. a right bending sliding block; 403. a positioning slide block insert is moved; 404. adjusting the slide block insert; 405. a time-delay material pressing component; 451. a time-delay material pressing rod; 452. a time-delay swaging part; 406. an impact block; 407. an adjusting lever; 481. a left stop block; 482. a right stopper block; 483. a middle stop block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, an embodiment of the present invention: a high-precision forming die with a reverse-folding multi-fine PIN plug-in terminal comprises an upper die and a lower die, and comprises a knife edge shearing station 1, a deburring station 2, a PIN deflection adjusting station 3 and a reverse-folding station 4 which are sequentially arranged; the knife edge shearing work station 1 comprises a four-section type shearing punch 101 arranged on an upper die and a knife edge lower die insert 102 arranged on a lower die, the deburring work station 2 comprises a deburring stripping insert 201 arranged on the upper die and a deburring lower die insert 202 arranged on the lower die, one end of the deburring lower die insert 202 is fixed on the lower die, the other end of the deburring lower die insert is provided with a plurality of deburring grooves 221, the folding work station 4 adopts a slide block walking and positioning structure, the folding work station 4 comprises a left bending slide block 401 and a right bending slide block 402 arranged on the lower die and a time-delay material pressing part 405 arranged on the upper die, the left bending slide block 401 and the right bending slide block 402 are correspondingly provided with a walking and positioning slide block insert 403 and an adjusting slide block insert 404, and a product folding part is formed between the walking and positioning slide block insert 403, the adjusting slide block insert 404 and the time-delay material pressing component 405. The four-stage shearing punch 101 comprises a punch body 111 and a punch mounting seat 112, a first buffer part 113 and a second buffer part 114 are arranged between the punch body 111 and the punch mounting seat 112, and the burr groove 221 is a trapezoidal groove with a wide upper part and a narrow lower part.

Specifically, as shown in fig. 3, the use of the conventional shearing punch reduces the use of upper die clearance, enhances the pressing strength of the upper die and the lower die, and is convenient for guiding the shearing punch by arranging the stripper plate fixing pin 103,

specifically, set up burring worker station 2, improve when follow-up engineering of bending is pressed the material, influenced the phenomenon of PIN to one side beat by the burr, burr recess 221 is the dovetail groove of narrow width down, when pressing the material, forms the form of chamfer, gets rid of the burr of PIN department through the form of chamfer, and simple structure has nevertheless solved the influence of burr, has improved production efficiency greatly, simultaneously, has improved PIN beat phenomenon.

The time-delay material pressing assembly 405 comprises a time-delay material pressing rod 451 arranged on the upper die and a time-delay material pressing part 452, and the time-delay material pressing part 452 and the adjusting slide block insert 404 are correspondingly arranged to be away from each other.

One side of the four-section type shearing punch 101 is provided with a stripper plate fixing pin 103, the stripper plate fixing pin 103 is positioned at the punch mounting seat 112 and the first buffer part 113, and the stripper plate fixing pin 103 is fixed on the upper die.

The PIN adjusting deflection work station 3 comprises an adjusting deflection stripping part 301 arranged on an upper die and an adjusting deflection lower die part 302 arranged on a lower die, and a plurality of adjusting deflection inserts 303 are mounted on the adjusting deflection stripping part 301.

The lower deflection adjusting die part 302 is provided with a plurality of adjusting salient points 321, the material stripping adjusting part 301 is provided with an adjusting insert 311, the adjusting insert 311 is partially overlapped with the adjusting salient points 321 in the vertical direction, and one side of the adjusting insert 311 is an adjusting salient point avoiding position 322.

Specifically, the adjusting convex points 321 correspond to the PIN root, the PIN root is used for dotting, the adjusting insert 311 forcibly extrudes one side of the product to push the product to the other side, the fine PIN deflection adjustment is completed, the deflection direction of the PIN is adjusted, the lower end surface of the adjusting insert 311 is lower than the lower end surface of the adjusting deflection stripping part 301 by 0.02 mm, and the PIN is not pressed when the PIN deflection is adjusted.

The folding work station 4 further comprises an impact block 406 and an adjusting rod 407 which are arranged on the upper die, and stop blocks are arranged on two sides of the left bending sliding block 401 and two sides of the right bending sliding block 402.

The stop blocks comprise a left stop block 481, a right stop block 482 and a middle stop block 483, impact spaces are correspondingly formed among the left stop block 481, the right stop block 482, the left bending slide block 401 and the right bending slide block 402, and springs are arranged among the middle stop block 483, the left bending slide block 401 and the right bending slide block 402.

The walking positioning slide block insert 403 and the adjusting slide block insert 404 are both of a Z-like structure, the bending end portions of the walking positioning slide block insert 403 and the adjusting slide block insert 404 are profiled, and the adjusting slide block insert 404 pressurizes the action position of the finished product for 0.01 mm.

Specifically, during mold closing, the adjusting rod 407 drives the impact block 406 to act, the impact block 406 is inserted into an impact space formed between the left stop block 481 and the right stop block 482 and between the left bending slide block 401 and the right bending slide block 402 to further drive the left bending slide block 401 and the right bending slide block 402 to act, the walking slide block insert 403 and the adjusting slide block insert 404 are further driven to act to complete bending, and meanwhile, the adjusting slide block insert 404 pressurizes a finished product acting position for 0.01 mm, so that the adjusting slide block insert 404 impacts forward for 0.01 mm more during impact bending, and the outer R of the product is fuller by extruding the product folding bend R.

A high-precision forming method for a multi-fine PIN plug terminal with a reverse fold comprises the following specific steps:

s1: feeding the material belt into a die, and stamping and positioning;

s2: performing a knife edge shearing engineering on the product;

s3: the deburring engineering is carried out on the cut part of the product, so that the problem that PIN deflects to one side under the influence of burrs during subsequent material pressing in the bending engineering is solved;

s4: pre-folding the product for 60 degrees and 90 degrees in sequence;

s5: performing PIN deflection adjustment engineering at the product PIN;

s6: sequentially performing a back-folding molding process on the product, wherein the bending position of the back-folding molding process needs to be pressurized for 0.01 mm, so that the situation that the back-folding appearance is not full is improved;

s7: and shearing the product formed by folding back to make the finished product fall off.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.