CN115041579A - Precision terminal PIN wide and narrow blanking die and blanking method - Google Patents

Abstract

The invention discloses a precision terminal PIN wide and extremely narrow blanking die and a blanking method, comprising a lower die and an upper die; the lower die comprises a lower die holder and a lower die cutter arranged on the lower die holder, the lower die The cutter is provided with an unloading chute that penetrates the upper and lower end surfaces of the lower die cutter, and a knife-edge rib protrudes upward from the side of the upper opening of the unloading chute; Adaptation; the punch is arranged on the upper die base and moves up and down with the upper die base, and the punch is adapted to the punching and lowering chute. There is a knife-edge rib protruding upward from the upper opening side of the upper and lower feed slots of the lower die cutter, so that when the terminal is punched, the knife-edge rib can cooperate with the stripping block to press the material up and down to prevent the material from being subjected to punching stress. At the same time, the lateral force is formed by strongly pressing the material, which prevents the material from being pulled into the inside of the blanking trough during the blanking process, and improves the flatness, contour, and blanking accuracy of the product.

Description

Precision terminal PIN width and extremely narrow blanking die and blanking method

technical field

The invention relates to the technology in the field of terminal processing, in particular to a precision terminal PIN wide and extremely narrow blanking die and a blanking method.

Background technique

Connectors are now widely used in various fields, and terminals are the main components in connectors used to transmit signals. Terminals are usually formed by metal strips processed by stamping dies. The main processing contents include punching and bending. Among them, the common structure of the punching die is as follows: it includes a matching punch and a knife seat, and the shape of the upper side of the knife seat is the same as the shape that needs to be formed after the terminal is punched. When the punch is pressed down, the excess waste material on the tape is cut off to complete the punching. At the same time, it is necessary to punch out terminals of various widths according to functional requirements.

When the existing terminal punching die assembly is used for punching the terminal with extremely narrow terminal PIN, it only adds the tube position and the pressing rib on the stripping block to press the material, so that the end face of the product obtained after the material is separated The quality is prone to problems such as slump, poor brightness, fracture and burr area, and the size is also prone to inconsistency, the punching accuracy and contour are not enough, the overall result is not ideal, and it is easy to cause material waste and increase processing costs; Therefore, it is necessary to further improve the structure of the existing terminal blanking die assembly with extremely narrow PIN width.

SUMMARY OF THE INVENTION

In view of this, the present invention is aimed at the deficiencies in the prior art, and its main purpose is to provide a precision terminal PIN wide and extremely narrow blanking die and a blanking method, which protrude upward through the side of the upper end opening of the upper and lower die cutting troughs. There is a knife-edge rib, so that the material can be crushed to death during punching with the stripping block, so that the material can form a lateral lateral force, and avoid the phenomenon of slump, end face, burr and trapezoid during the punching process.

To achieve the above object, the present invention adopts the following technical scheme:

A precision terminal PIN wide and extremely narrow blanking die, including a lower die and an upper die;

The lower die includes a lower die holder and a lower die cutter set on the lower die holder. The lower die cutter is provided with an unloading chute penetrating the upper and lower end surfaces of the lower die cutter, and a side of the upper end of the opening of the unloading chute is protruded upward. Knife edge ribs;

The upper mold can be moved up and down just above the lower mold, and the upper mold includes a stripping plate, an upper mold base, a stripping block and a punch; the stripping plate is located directly above the lower mold base and is opposite to the lower mold. The seat can be moved up and down; the upper die seat is located right above the stripping plate and can be set up and down relative to the stripping plate; the stripping feeding block is set on the stripping plate to move up and down with the stripping plate, The block is located just above the lower die cutter and is matched with the lower die cutter, and the stripping block has a punching slot matched with the lowering slot; the punch is arranged on the upper die base and moves up and down with the upper die base, and The punch is matched with the punching trough.

As a preferred solution, the knife-edge protruding rib is integrally protruded upward from the lower die cutter, and the knife-edge protruding rib is arranged around the left side and the front side of the discharge chute.

As a preferred solution, a limiting portion is integrally protruded downward on the lower end surface of the stripping and feeding block, the limiting portion is located on the right side of the opening of the lower end of the punching groove, and the lateral distance between the limiting portion and the punching groove is the same as that of the punching groove. The terminal PIN width is the same.

As a preferred solution, the lower die cutter is provided with two first limit holes arranged on the left and right, two second limit holes that cooperate with the first limit holes penetrate through the stripping block, and two fixing pins The position is limited by passing through the corresponding second limit hole and the first limit hole in sequence from top to bottom.

As a preferred solution, the upper end side of the stripping block is integrally provided with a first fixing portion that is fixed to the stripping plate.

As a preferred solution, the punching groove includes a first punching groove and a second punching groove that are connected up and down. The bottom surface of the punching groove integrally extends downward and penetrates the lower end surface of the stripping block; correspondingly, the punch includes a main body and a punch integrally formed at the lower end of the main body.

As a preferred solution, an upper end side of the main body portion is integrally provided with a second fixing portion that is fixed to the upper die and protrudes outward.

A method for blanking precision terminal PIN width and extremely narrow, using the precision terminal PIN width and extremely narrow blanking die according to any one of claims 1-7, comprising the following steps:

(1) Raise the upper die holder and the stripper plate upward, and then place the material belt on the upper surface of the lower die cutter;

(2) Press down the stripping plate so that the stripping block is in semi-contact with the material belt;

(3) Press the upper die seat down to make the material unloaded into the block to compress the material, and punch the material belt through the punch;

(4) Raise the upper die holder and the stripping plate, move the material belt to the right position, and then repeat steps 2 and 3.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

There is a knife-edge rib protruding upward from the upper opening side of the upper and lower feed slots of the lower die tool, so that when the terminal is punched, the knife-edge rib can cooperate with the stripping block to press the material up and down to prevent the material from being subjected to punching stress. At the same time, the lateral force is formed by strongly pressing the material, so as to avoid the material being pulled into the inside of the feeding trough during the punching process, so that there will be no slump, end face, burr, trapezoid and other undesirable phenomena after the material is punched. The flatness, contour and blanking accuracy of the product reduce the waste of materials and reduce the processing cost.

In order to illustrate the structural features and effects of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the preferred embodiment of the present invention;

Fig. 2 is the schematic diagram of the use state of the preferred embodiment of the present invention;

3 is a schematic diagram of a disassembled state of a preferred embodiment of the present invention;

4 is a schematic cross-sectional view of a preferred embodiment of the present invention;

FIG. 5 is an enlarged schematic view of A in FIG. 4 .

Description of drawings:

10. Lower die 101. Feeding chute

102. The first limit hole 11. Lower die seat

12. Lower die cutter 13. Knife edge ribs

20. Upper die 201. Punching

202, the second limit hole 203, the first punch

204. The second punching groove 21. Stripping plate

22. Upper die base 23. Stripping into the block

231, limiting part 232, first fixing part

24. Punch 241. Main body

242, the punch 243, the second fixing part.

Detailed ways

Please refer to FIG. 1 to FIG. 5 , which show the specific structure of the preferred embodiment of the present invention, which includes a lower mold 10 and an upper mold 20 .

The lower die 10 includes a lower die holder 11 and a lower die cutter 12 arranged on the lower die holder 11 . A knife-edge protruding rib 13 protrudes upwardly beside the open side of the upper end; in this embodiment, the knife-edge protruding rib 13 is integrally protruded upward from the lower die cutter 12 , and the knife-edge protruding rib 13 surrounds the left side of the feeding chute 101 and the front side is provided; the lower die cutter 12 is provided with two first limiting holes 102 arranged left and right.

The upper die 20 can be moved up and down just above the lower die 10. The upper die 20 includes a stripping plate 21, an upper die base 22, a stripping block 23 and a punch 24; the stripping plate 21 is located in the lower die The upper mold seat 22 is located directly above the stripping plate 21 and can be moved up and down relative to the stripping plate 22; The stripping plate 21 moves up and down with the stripping plate 21. The stripping and feeding block 23 is located directly above the lower die cutter 12 and is matched with the lower die cutter 12. Punching groove 201; the punch 24 is arranged on the upper die base 22 and moves up and down with the upper die base 22, and the punch 24 is matched with the punching groove 201 and the lower trough 101, and the punch 24 passes along with the upper die base 22. It moves downward and passes through the punching slot 201 and the discharging slot 101 in sequence to complete the punching of the terminal.

In this embodiment, the lower end surface of the stripping and feeding block 23 integrally protrudes downward with a limiting portion 231 . The lateral distance between them is the same as the width of the terminal PIN, and the limiting part 231 is used to limit the distance that the material tape moves to the right after each punching, so as to ensure the accuracy of the width of the terminal PIN; The two second limit holes 202 matched with the first limit holes 102, and the two fixing pins (not shown in the figure) pass through the corresponding second limit holes 202 and the first limit holes 102 in order from top to bottom for limiting. position, in order to prevent the dislocation between the stripping block 23 and the lower die cutter 12, and ensure the precision of blanking; the upper end of the stripping block 23 is integrally protruded outward with a stripping plate 21 to be fixed. The first fixing part 232 of the notch 201; the punching groove 201 includes a first punching groove 203 and a second punching groove 204 which are connected up and down. The second punching groove 204 integrally extends downward from the bottom surface of the first punching groove 203 and penetrates the lower end surface of the stripping block 23 ; correspondingly, the punch 24 includes a main body portion 241 and a punch 242 integrally formed at the lower end of the main body portion 241 . so that when the punch 24 is punched, only the punch 242 is punched downward to prevent the punch 24 from punching down too much distance, causing the punch 24 to be bent and deformed; the upper end side of the main body portion 241 is integrated A second fixing portion 243 that is fixed to the upper die 22 is protruded outward.

The working principle of this embodiment is described in detail as follows:

(1) Lift the upper die holder 22 and the stripper plate 21 upward, and then place the material tape on the upper surface of the lower die cutter 12;

(2) Press down the stripping plate 21 so that the stripping block 23 is in half contact with the material belt;

(3) Press down the upper die seat 22, so that the unloading block 23 presses the material, and punches the material belt through the punch 24;

(4) Raise the upper die holder 22 and the stripper plate 21, move the material strip to the right to an appropriate position, and then repeat steps 2 and 3.

The key point of the design of the present invention is that a knife-edge rib is protruded upward from the side of the upper end opening of the upper and lower feed chute of the lower die cutter, so that when the terminal is punched, the knife-edge rib can cooperate with the ejection block to press the material up and down. In order to prevent the material from being deformed by the punching stress, at the same time, a lateral lateral force is formed by strongly pressing the material, so as to avoid the material being pulled into the blanking chute during the punching process, so that there will be no slump, end face, burr, etc. Trapezoid and other undesirable phenomena improve the flatness, contour and punching accuracy of the product, reduce the waste of materials and reduce the processing cost.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still It belongs to the scope of the technical solution of the present invention.

Claims (6)

1. A precision terminal PIN wide and extremely narrow blanking die is characterized in that: it comprises a lower die and an upper die; The lower die includes a lower die holder and a lower die cutter set on the lower die holder. The lower die cutter is provided with an unloading chute penetrating the upper and lower end surfaces of the lower die cutter, and a side of the upper end of the opening of the unloading chute is protruded upward. Knife-edge rib; the knife-edge rib is integrally protruded upward from the lower die cutter, and the knife-edge rib is arranged around the left side and the front side of the discharge chute; The upper mold can be moved up and down just above the lower mold, and the upper mold includes a stripping plate, an upper mold base, a stripping block and a punch; the stripping plate is located directly above the lower mold base and is opposite to the lower mold. The seat can be moved up and down; the upper die seat is located right above the stripping plate and can be set up and down relative to the stripping plate; the stripping feeding block is set on the stripping plate to move up and down with the stripping plate, The block is located just above the lower die cutter and is matched with the lower die cutter. The stripping and feeding block has a punching groove matched with the feeding chute. The limiting portion is located on the right side of the opening of the lower end of the punching slot, and the lateral distance between the limiting portion and the punching slot is the same as the width of the terminal PIN; the punch is arranged on the upper die seat and moves up and down with the upper die seat, and punches The sub is matched with the punching and discharging chute. 2. The precision terminal PIN wide and extremely narrow blanking die according to claim 1, characterized in that: the lower die cutter is provided with two first limit holes arranged on the left and right, and the stripping block is penetrated with The first limiting holes are matched with the two second limiting holes, and the two fixing pins pass through the corresponding second limiting holes and the first limiting holes sequentially from top to bottom for limiting. 3 . The precision terminal PIN wide and extremely narrow blanking die according to claim 1 , wherein the upper end side of the stripping block is integrally protruded outward with a first fixing portion fixed to the stripping plate. 4 . 4. The precision terminal PIN wide and extremely narrow blanking die according to claim 1, wherein the punching groove comprises a first punching groove and a second punching groove which are connected up and down, and the first punching groove is fed by the unloading material. The upper end face of the block extends downward as a whole, and the second punch groove extends downward as a whole from the bottom surface of the first punch groove and penetrates the lower end face of the stripping block; correspondingly, the punch includes a main body part and is integrated with the lower end of the main body part. Formed punch. 5 . The precision terminal PIN wide and extremely narrow blanking die according to claim 4 , wherein the upper end side of the main body portion is integrally protruded outward with a second fixing portion fixed to the upper die. 6 . 6. A precision terminal PIN wide and extremely narrow blanking method is characterized in that: adopting the precision terminal PIN wide and extremely narrow blanking die as described in any one of claims 1-7, comprising the following steps: (1) Raise the upper die holder and the stripper plate upward, and then place the material belt on the upper surface of the lower die cutter; (2) Press down the stripping plate so that the stripping block is in semi-contact with the material belt; (3) Press the upper die seat down to make the material unloaded into the block to compress the material, and punch the material belt through the punch; (4) Raise the upper die holder and the stripping plate, move the material belt to the right position, and then repeat steps 2 and 3.

Images