Precise continuous blanking structure for multiple PIN terminals

Abstract

The utility model relates to a multi-PIN terminal precise continuous blanking structure. The multi-PIN terminal precise continuous blanking structure comprises an upper die, a lower die, a punch assembly and a knife edge assembly. The upper die is located above the lower die, the punch assembly is connected into the upper die, and the knife edge assembly is connected into the lower die. The upper die comprises an upper connecting plate, an upper die base, an upper base plate, an upper die plate, a discharging base plate and a discharging plate. The lower end face of the upper connecting plate is connected with the upper die base, the lower end face of the upper die base is connected with the upper padding plate, the lower end face of the upper padding plate is connected with the upper die plate, the lower end face of the upper die plate is connected with the discharging padding plate, and the lower end face of the discharging padding plate is connected with the discharging plate. The punch assembly comprises a blanking punch, an upper die plate insert and a discharging plate insert. The multi-PIN terminal precise continuous blanking structure aims to overcome existing defects, achieves continuous punching production of products, and has the advantages of being stable in operation and high in production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of multi-PIN terminal precision continuous blanking structure. BACKGROUND

[0002] With the rapid development of new energy automobile industry, automobile accelerates transformation electrification, intelligentization, and the use proportion and range of automobile printed circuit board connector are continuously improved. It also puts forward more requirements for the connection stability, reliability, high integration and high precision of connector. Printed circuit board connector is a component that connects one or more terminals through plastic shell and auxiliary parts to complete the function of electrical connection. As the main body of the connector, the quality state of the terminal is also crucial. The inlay injection molding of multi-PIN terminal requires high precision for the position, flatness, thickness and width tolerance of PIN end. The positioning is simple during high-precision terminal injection molding, and there is no glue overflow and good sealing. The male and female end matching pull force is stable, and the electrical characteristics are good. Therefore, a stamping die structure capable of punching out high-precision sections with ideal section quality and no tool joint burr is developed.

[0003] The existing die structure adopts single-side punching for multi-PIN (pin) blanking, and the other side is punched in the lower station. The separate blanking internal stress is not balanced, and it is not easy to position. The product size fluctuates greatly during continuous stamping production, which easily causes batch defects. Therefore, a multi-PIN terminal precision continuous blanking structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims to overcome the defects of the prior art and provide a multi-PIN terminal precision continuous blanking structure, which realizes continuous stamping production of products and has the advantages of stable operation and high production efficiency.

[0005] The technical scheme to achieve the above-mentioned purpose is as follows:

[0006] The multi-PIN terminal precision continuous blanking structure comprises an upper die, a lower die, a punch assembly and a knife edge assembly. The upper die is located above the lower die. The punch assembly is connected in the upper die. The knife edge assembly is connected in the lower die.

[0007] Preferably, the upper die comprises an upper connecting plate, an upper die seat, an upper pad, an upper die plate, a stripper pad and a stripper plate. The lower end surface of the upper connecting plate is connected to the upper die seat. The lower end surface of the upper die seat is connected to the upper pad. The lower end surface of the upper pad is connected to the upper die plate. The stripper pad is arranged below the upper die plate. The lower end surface of the stripper pad is connected to the stripper plate.

[0008] Preferably, the lower die comprises a lower die plate, a lower pad and a lower die seat. The upper end surface of the lower die seat is connected to the lower pad. The upper end surface of the lower pad is connected to the lower die plate.

[0009] Preferably, the punch assembly comprises a punching punch, an upper die plate block and a stripper plate block; the upper die plate block is arranged in the upper die plate, the stripper plate block is arranged in the stripper plate, and the punching punch is arranged in the stripper plate block and penetrates the stripper plate to the upper die plate block upward.

[0010] Preferably, the knife edge assembly comprises a lower die stripper block, a lower knife fixed block, a lower knife, a ejector rod, a spring and a stop screw; the lower die stripper block and the lower knife fixed block are arranged in the lower die plate, and the lower die stripper block is above the lower knife fixed block; the lower knife is arranged in the inner side of the lower knife fixed block, the ejector rod is slidably connected in the lower pad plate, the upper end of the ejector rod is connected with the lower knife, the lower end of the ejector rod is connected with the spring arranged in the lower die seat, and the lower end of the spring is connected with the stop screw.

[0011] Preferably, a threaded hole is arranged in the lower die seat, and the stop screw is connected in the threaded hole.

[0012] The utility model discloses a multi-PIN terminal precision continuous punching structure, through setting up the upper die and lower die, the upper die includes upper connecting plate, upper connecting plate lower end surface connects upper die seat, upper die seat lower end surface connects upper pad plate, upper pad plate lower end surface connects upper die plate, and upper die plate lower end surface connects stripper pad plate, and stripper pad plate lower end surface connects stripper plate, the lower end surface of upper die is connected with punch assembly, the lower die includes lower die seat, lower die seat upper end surface connects lower pad plate, lower pad plate upper end surface connects lower die plate, and lower die upper end surface connects knife edge assembly, for multi-PIN terminal, one punch mode is punched, ensures that every branch terminal position degree is 0.05, flatness is 0.05, width tolerance is within ± 0.015, and punch speed is above 300 dies per minute. The high quality requirement of product is met, the die structure does not need to be divided and punched, repeated positioning is avoided, high-speed continuous punching production is realized, and production efficiency is improved. ACCURATE CONTINUOUS PUNCHING STRUCTURE FOR MULTI-PIN TERMINAL

[0013] Figure 1 It is the schematic diagram of the utility model multi-PIN terminal precision continuous punching structure;

[0014] Figure 2 It is the separate schematic diagram of the utility model multi-PIN terminal precision continuous punching structure;

[0015] Figure 3 It is the front view of the utility model product;

[0016] Figure 4 It is the axonometric view of the utility model product.

[0017] In the diagram: 1. Upper die; 2. Lower die; 10. Upper connecting plate; 11. Upper die base; 12. Upper backing plate; 13. Upper template; 14. Ejector pad; 15. Ejector plate; 16. Lower template; 17. Lower backing plate; 18. Lower die base; 20. Punching punch; 21. Upper template insert block; 22. Ejector plate insert block; 23. Product; 24. Lower die ejector block; 25. Lower cutter fixing block; 26. Lower cutter; 27. Ejector rod; 28. Spring; 29. ​​Fixing screw. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, a precision continuous punching structure for multi-PIN terminals includes an upper die 1, a lower die 2, a punch assembly, and a cutting edge assembly; the upper die 1 is located above the lower die 2, the punch assembly is connected inside the upper die 1, and the cutting edge assembly is connected inside the lower die 2.

[0021] Specifically, the upper die 1 includes an upper connecting plate 10, an upper die base 11, an upper backing plate 12, an upper template 13, a stripper pad 14, and a stripper plate 15. The lower end face of the upper connecting plate 10 is connected to the upper die base 11, the lower end face of the upper die base 11 is connected to the upper backing plate 12, the lower end face of the upper backing plate 12 is connected to the upper template 13, the stripper pad 14 is disposed below the upper template 13, and the lower end face of the stripper pad 14 is connected to the stripper plate 15. The punch assembly includes a punching punch 20, an upper template insert block 21, and a stripper plate insert block 22. The upper template insert block 21 is disposed within the upper template 13, the stripper plate insert block 22 is disposed within the stripper plate 15, and the punching punch 20 is disposed within the stripper plate insert block 22, with its upper end extending upward through the stripper pad 14 into the upper template insert block 21.

[0022] Specifically, the lower die 2 comprises a lower die plate 16, a lower die cushion plate 17 and a lower die seat 18; the upper end surface of the lower die seat 18 is connected with the lower die cushion plate 17, and the upper end surface of the lower die cushion plate 17 is connected with the lower die plate 16. The knife edge assembly comprises a lower die stripper 24, a lower knife fixed block 25, a lower knife 26, a ejector rod 27, a spring 28 and a stop screw 29; the lower die stripper 24 and the lower knife fixed block 25 are both arranged in the lower die plate 16, and the lower die stripper 24 is located above the lower knife fixed block 25; the lower knife 26 is arranged inside the lower knife fixed block 25, the ejector rod 27 is slidably connected in the lower die cushion plate 17, the upper end of the ejector rod 27 is connected with the lower knife 26, the lower end of the ejector rod 27 is connected with the spring 28 located in the lower die seat 18, and the lower end of the spring 28 is connected with the stop screw 29. The lower die seat 18 is provided with a threaded hole, and the stop screw 29 is connected in the threaded hole.

[0023] Specifically, when the upper die 1 moves downward, the lower end of the stripper plate 15 drives the stripper plate entry block 22 to press the product 23 first, the upper die 1 continues to move downward, the stripper plate entry block 22 and the product 23 move downward, the lower die stripper 24 is pressed, the lower end of the lower die stripper 24 presses the ejector rod 27 to move downward, and the spring 28 at the upper end of the ejector rod 27 is compressed. The lower end of the lower die stripper 24 moves to contact the upper end of the lower knife fixed block 25, the stripper plate 15, the stripper plate entry block 22, the product 23 and the lower die stripper 24 stop moving, at this time, the upper end surface of the lower knife 26 contacts the product 23; then the blanking punch 20 is pressed downward with the upper die plate 13, when the lower end of the blanking punch 20 is exposed from the stripper plate entry block 22, the blanking punch 20 starts to blank the product along the knife edge contour of the lower knife 26. The punch 20 and the upper die plate 13 move to the upper die 1 and the lower die 2, and the blanking action is completed. The product 23 is punched out, because the knife edge surface of the lower end surface of the punch 20 contains the product contour and the bending forming surface, there is a step between the product 23 and the scrap in the blanking contour area, the product 23 and the scrap are connected together in the bending area and are not completely separated, and the scrap is discharged at the lower station. After the blanking is completed, the upper die 1 moves upward, the punch 20 moves upward with the upper die plate 13, when the upper die 1 and the punch 20 are separated from the product 23, the spring 28 releases the pressure and returns to the original position, drives the ejector rod 27 and the lower die stripper 24 to move upward, and then the product 23 moves upward with the lower die stripper and is separated from the lower knife 26, the material strip is floated and sent to the next station.

[0024] Specifically, the multi-PIN terminal precision continuous blanking structure ensures that the position degree of each terminal is 0.05, the flatness is 0.05, the width tolerance is within ±0.015, and the punching speed is above 300 times per minute. The high quality requirement of the product is met, the die structure does not need to be divided into knives for blanking, repeated positioning is avoided, high-speed continuous stamping production is realized, and the production efficiency is improved.

[0025] When the upper die 1 moves downward, the punch 20 is pressed down with the upper die plate 13, the cutting edge surface of the punch 20 lower end surface contains the product profile and the bending forming surface, the punch 20 lower end cutting area and the lower knife 26 extend the product profile, the punch 20 lower end bending forming area and the lower die stripper block 24 cooperate with each other to cut the product 23 profile area and the corner material out of the section, and the corner material is still connected to the material belt, and the material belt is sent to the next work station to punch the corner material.

[0026] The multi-PIN terminal precision continuous punching structure comprises an upper die and a lower die; the upper die comprises an upper connecting plate, the lower end surface of the upper connecting plate is connected with an upper die seat, the lower end surface of the upper die seat is connected with an upper backing plate, the lower end surface of the upper backing plate is connected with an upper die plate, the lower end surface of the upper die plate is connected with a stripper backing plate, and the lower end surface of the stripper backing plate is connected with a stripper plate; the lower end surface of the upper die is connected with a punch assembly; the lower die comprises a lower die seat, the upper end surface of the lower die seat is connected with a lower backing plate, the upper end surface of the lower backing plate is connected with a lower die plate, and the upper end surface of the lower die is connected with a cutting edge assembly; for the multi-PIN terminal, one-cut punching is adopted, the position degree of each terminal is ensured to be 0.05, the flatness is ensured to be 0.05, the width tolerance is within ±0.015, and the punching speed is above 300 dies per minute. The high quality requirement of the product is met, the die structure does not need to be divided for punching, repeated positioning is avoided, high-speed continuous punching production is realized, and the production efficiency is improved.

[0027] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or part or all of the technical features can be replaced equivalently; the modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A multi-PIN terminal precision continuous blanking structure, characterized in that, The utility model provides a cutting die, including upper die (1), lower die (2), punch subassembly and knife mouth subassembly, upper die (1) is located above lower die (2), punch subassembly is connected in upper die (1), knife mouth subassembly is connected in lower die (2), Upper die (1) includes upper connecting plate (10), upper die seat (11), upper backing plate (12), upper die plate (13), unloading backing plate (14) and unloading plate (15), upper connecting plate (10) lower end surface connects upper die seat (11), upper die seat (11) lower end surface connects upper backing plate (12), upper backing plate (12) lower end surface connects upper die plate (13), and upper die plate (13) lower is provided with unloading backing plate (14), and unloading backing plate (14) lower end surface connects unloading plate (15), Lower die (2) includes lower die plate (16), lower backing plate (17) and lower die seat (18), lower die seat (18) upper end surface connects lower backing plate (17), and lower backing plate (17) upper end surface connects lower die plate (16), Punch subassembly includes blanking punch (20), upper die plate block (21) and unloading plate block (22), upper die plate block (21) is arranged in upper die plate (13), unloading plate block (22) is arranged in unloading plate (15), and blanking punch (20) is arranged in unloading plate block (22), and upper end is upwards and penetrates unloading backing plate (14) to upper die plate block (21) inside, Knife mouth subassembly includes lower die unloading block (24), lower knife fixed block (25), lower knife (26), jack (27), spring (28) and stop screw (29), lower die unloading block (24) and lower knife fixed block (25) are all arranged in lower die plate (16), and lower die unloading block (24) is located above lower knife fixed block (25), lower knife (26) is arranged in lower knife fixed block (25) inside, lower backing plate (17) is slidably connected with jack (27), and the upper end of jack (27) is connected with lower knife (26), and the lower end is connected with spring (28) in lower die seat (18), and the lower end of spring (28) is connected with stop screw (29).

2. The multi-PIN terminal precision continuous blanking structure according to claim 1, characterized in that, Threaded hole is seted up in lower die seat (18), and stop screw (29) is connected in threaded hole.

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