Stripping knife edge puncturing structure

Abstract

The utility model discloses a stripping knife edge puncturing structure. The stripping knife edge puncturing structure comprises a lower die assembly, an upper die assembly and a stripping assembly, the lower die assembly is provided with at least one group of lower die punches, and the group of lower die punches is formed by arranging a plurality of lower die punches side by side; the upper die assembly is arranged right above the lower die assembly in an up-down movable mode, the upper die assembly is provided with at least one group of upper die punches, the group of upper die punches are formed by arranging a plurality of upper die punches side by side, and the plurality of upper die punches are located right above the plurality of lower die punches respectively; the upper die punch and the lower die punch are matched to press a material belt, the knife edge part is matched to be arranged on the lower surface of the stripping knife edge, and the stripping knife edge moves downwards to enable the knife edge part to pierce the material belt, so that the terminal PIN needle is formed, the structure strength of the knife edge part can be improved, the knife edge part is not easy to break, and the service life of the terminal PIN needle is prolonged. And meanwhile, the punching speed can be 2-3 times that of conventional puncturing, so that the production efficiency is improved by 2-3 times, and convenience is brought to production operation.

Description

Technical Field

[0001] The utility model relates to the technology in the field of terminal forming, in particular to a stripping edge piercing structure. Background Art

[0002] Terminal PIN needles, as an important part of connectors, are mainly used to complete the transmission of electrical signals or currents. Terminal PIN needles, abbreviated as PIN needles, are metal conduction parts used in connectors to conduct electricity (signals). The main function of terminal PIN needles is to serve as a transmission channel for electrical signals to ensure that current or signals can be stably and reliably transmitted between connectors. Terminal PIN needles are widely used in military, aerospace, machining, metallurgy, oil drilling, mining tools, electronic communication and other fields.

[0003] When manufacturing terminal PIN needles, they are usually formed by stamping on a metal strip using a stamping die. A number of punches are arranged side by side in the stamping die, and these punches are used to pierce and stamp the metal strip, and multiple side-by-side terminal PIN needles can be formed at one time. The distance between adjacent terminal PIN needles is called the PIN pitch. The smaller the PIN pitch, the less waste material is generated, so that the purpose of saving materials can be achieved. And the smaller the required PIN pitch, the smaller the width of the corresponding punch, which results in too weak structural strength of the punch and easy breakage. For example, when the small PIN pitch P = 0.4 mm and stamping on a thin material (T = 0.08), the punch is very easy to break, and the faster the stamping speed, the easier it is to break. Therefore, the maximum stamping speed can only be set at SPM400, resulting in relatively low production efficiency. Therefore, it is necessary to improve the current stamping die. Summary of the Utility Model

[0004] In view of this, aiming at the deficiencies existing in the prior art, the main purpose of the utility model is to provide a stripping edge piercing structure, which can effectively solve the problems of low production efficiency of the existing stamping die and easy breakage of the punch.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A stripping blade piercing structure includes a lower die assembly, an upper die assembly, and a stripping assembly. The lower die assembly has at least one set of lower die punches, and this set of lower die punches is composed of multiple lower die punches arranged side by side. The upper die assembly is arranged above the lower die assembly in a vertically movable manner. The upper die assembly has at least one set of upper die punches, and this set of upper die punches is composed of multiple upper die punches arranged side by side. The multiple upper die punches are respectively located directly above the multiple lower die punches. The stripping assembly is arranged above the lower die assembly in a vertically movable manner relative to the upper die assembly. The stripping assembly includes a stripping frame opening and a stripping blade. The stripping frame opening has at least one accommodating groove, and the stripping blade is arranged in the accommodating groove. The lower surface of the stripping blade protrudes downward with multiple blade parts, and through holes are formed through the upper and lower surfaces of the stripping blade to form multiple first through grooves. The multiple blade parts are respectively located on both sides of the corresponding first through grooves, and the multiple upper die punches are adapted to the multiple first through grooves and are respectively arranged in the corresponding first through grooves in a vertically movable manner.

[0007] As a preferred solution, the lower die punches are two sets arranged left and right. Correspondingly, the upper die punches are also two sets arranged left and right. The stripping frame opening has two accommodating grooves arranged left and right, and the stripping blades are two, and the two stripping blades are respectively arranged in the two accommodating grooves.

[0008] As a preferred solution, the lower die assembly includes a lower die outer frame, a lower die inner frame, and a lower die insert. The lower die outer frame has a first receiving groove, the lower die inner frame is arranged in the first receiving groove, the lower die inner frame has a second receiving groove, and this set of lower die punches is arranged in the second receiving groove. The lower die insert is arranged on the top of the lower die inner frame and is located in the first receiving groove. The lower die insert has multiple second through grooves, and the multiple lower die punches respectively pass through the multiple second through grooves and extend upward.

[0009] As a preferred solution, a first cushion block is arranged at the bottom of the lower die outer frame, a second cushion block is arranged inside the first cushion block, the second cushion block is located directly below the multiple lower die punches, and a lower spring is arranged at the bottom of the first cushion block.

[0010] As a preferred solution, a lower building block is arranged between the inner wall of the first receiving groove and the outer wall of the lower die inner frame.

[0011] As a preferred solution, the first receiving grooves are two arranged left and right. Correspondingly, the lower die inner frame and the lower die insert are both two, and the two lower die inner frames and the two lower die inserts are respectively arranged in the two first receiving grooves. And a third receiving groove is arranged on the lower die outer frame, and a lower die floating block is arranged in the third receiving groove.

[0012] As a preferred solution, an upper building block is arranged between the inner wall of the accommodating groove and the inner wall of the stripping blade.

[0013] As a preferred solution, the upper die assembly includes a clamping plate insert, which is in an inverted U shape, the upper die punch is fixed on the clamping plate insert, and an upper spring is provided on the top of the clamping plate insert.

[0014] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0015] The material strip is pressed by cooperating with the upper die punch and the lower die punch, and the blade portion is set on the lower surface of the stripping blade, and the stripping blade is moved downward to pierce the material strip by the blade portion, thereby forming a terminal PIN needle. This structure can increase the structural strength of the blade portion, and the blade portion is not easy to break. At the same time, the stamping speed can be 2-3 times that of conventional puncture, thereby improving the production efficiency by 2-3 times and bringing convenience to production operations.

[0016] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an assembly perspective view of a preferred embodiment of the utility model;

[0018] Figure 2 It is an exploded view of a preferred embodiment of the utility model;

[0019] Figure 3 It is a cross-sectional view of a preferred embodiment of the utility model;

[0020] Figure 4 yes Figure 3 A magnified schematic diagram of the position A in the middle;

[0021] Figure 5 This is a structural schematic diagram of the preferred embodiment of the utility model in the mold opening state;

[0022] Figure 6 This is a structural schematic diagram of the preferred embodiment of the utility model in the pressing state;

[0023] Figure 7 It is a structural schematic diagram of a preferred embodiment of the utility model in a closed state.

[0024] Description of the accompanying drawings:

[0025] 10. Lower die assembly 11. Lower die punch

[0026] 12. Lower mold frame 121, first storage slot

[0027] 122, third storage slot 13, lower mold inner frame

[0028] 131. Second storage groove 14. Lower die insert

[0029] 141. Second through groove 15. First cushion block

[0030] 16. Second cushion block 17. Lower spring

[0031] 18. Lower block 19. Lower die floating block

[0032] 20. Upper die assembly 21. Upper die punch

[0033] 22. Clamping plate insert 23. Upper spring

[0034] 24. Square pin 25. Third cushion block

[0035] 30. Stripping assembly 31. Stripping frame opening

[0036] 311. Accommodating groove 32. Stripping cutting edge

[0037] 321. Cutting edge part 322. First through groove

[0038] 33. Upper block 40. Strip

[0039] 41. Terminal PIN needle 50. Lower die base

[0040] 60. Upper die base. Detailed implementation manner

[0041] Please refer to Figures 1 to 7 as shown, which shows the specific structure of the preferred embodiment of the present utility model, including a lower die assembly 10, an upper die assembly 20 and a stripping assembly 30.

[0042] The lower die assembly 10 has at least one set of lower die punches, and this set of lower die punches is formed by arranging a plurality of lower die punches 11 side by side; specifically, the lower die assembly 10 includes a lower die outer frame 12, a lower die inner frame 13 and a lower die insert 14. The lower die outer frame 12 has a first receiving groove 121, the lower die inner frame 13 is arranged in the first receiving groove 121, the lower die inner frame 13 has a second receiving groove 131, and this set of lower die punches is arranged in the second receiving groove 131. The lower die insert 14 is arranged on the top of the lower die inner frame 13 and is located in the first receiving groove 121. The lower die insert 14 has a plurality of second through grooves 141, and the plurality of lower die punches 11 respectively pass through the plurality of second through grooves 141 and extend upward. In this embodiment, a first cushion block 15 is arranged at the bottom of the lower die outer frame 12, a second cushion block 16 is arranged inside the first cushion block 15, the second cushion block 16 is located directly below the plurality of lower die punches 11, and a lower spring 17 is arranged at the bottom of the first cushion block 15. Also, a lower building block 18 is arranged between the inner wall of the first receiving groove 121 and the outer wall of the lower die inner frame 13 to adjust the gap. In addition, there are two first receiving grooves 121 arranged left and right. Correspondingly, there are two lower die inner frames 13 and two lower die inserts 14. The two lower die inner frames 13 and the two lower die inserts 14 are respectively arranged in the two first receiving grooves 121, and a third receiving groove 122 is arranged on the lower die outer frame 12. A lower die floating block 19 is arranged in the third receiving groove 122, and the lower die floating block 19 is used for lifting the strip 40. The lower die punches 11 are arranged in two groups left and right, and the two groups of lower die punches 11 are respectively arranged in the two lower die inner frames 13.

[0043] The upper die assembly 20 is arranged above the lower die assembly 10 in a vertically movable manner. The upper die assembly 20 has at least one set of upper die punches, and this set of upper die punches is formed by arranging a plurality of upper die punches 21 side by side. The plurality of upper die punches 21 are respectively located directly above the plurality of lower die punches 11. Specifically, the upper die assembly 20 includes a clamping plate insert 22, the clamping plate insert 22 is in an inverted U shape, the upper die punches 21 are fixed on the clamping plate insert 22, and an upper spring 23 is arranged at the top of the clamping plate insert 22. Also, the plurality of upper die punches 21 are clamped and fixed in the mounting holes of the clamping plate insert 22 through square pins 24, and a third cushion block 25 is clamped on the clamping plate insert 22, and the third cushion block 25 is located above the plurality of upper die punches 21. In addition, the upper die punches 21 are also arranged in two groups left and right.

[0044] The stripping component 30 is arranged to be movable up and down relative to the upper die component 20, and the stripping component 30 is located directly above the lower die component 10. The stripping component 30 includes a stripping frame opening 31 and a stripping blade edge 32. The stripping frame opening 31 has at least one accommodating groove 311. The stripping blade edge 32 is arranged in the accommodating groove 311. A plurality of blade parts 321 protrude downward from the lower surface of the stripping blade edge 32, and a plurality of first through grooves 322 are formed through the upper and lower surfaces of the stripping blade edge 32. The plurality of blade parts 321 are respectively located on both sides of the corresponding first through grooves 322, and a plurality of upper die punches 21 are adapted to the plurality of first through grooves 322 and are respectively arranged to be movable up and down in the corresponding first through grooves 322. In this embodiment, an upper block 33 is arranged between the inner wall of the accommodating groove 311 and the inner wall of the stripping blade edge 32 to adjust the gap. And, the stripping frame opening 31 has two accommodating grooves 311 which are arranged left and right. The stripping blade edges 32 are two, and the two stripping blade edges 32 are respectively arranged in the two accommodating grooves 311 so as to simultaneously complete the piercing forming of two groups of terminals.

[0045] The working principle of this embodiment is described in detail as follows:

[0046] During use, as Figures 5 to 7 shown, the lower die component 10 is arranged in the lower die base 50 to form a lower die, and the upper die component 20 and the stripping component 30 are both arranged in the upper die base 60 to form an upper die. As Figure 5 shown, when the upper die and the lower die are in the open die state, the strip 40 can be placed between the upper die and the lower die for conveying. Then, the upper die and the lower die are closed. During the closing process, as Figure 6 shown, the upper die component 20 and the lower die component 10 are closed, so that a plurality of upper die punches 21 and a plurality of lower die punches 11 respectively abut against the upper and lower surfaces of the strip 40, firmly pressing the strip 40 at intervals. Then, the stripping component 30 continues to move downward relative to the upper die component 20 and closes in place, so that each blade part 321 of the stripping blade edge 32 pierces the strip 40. In this way, terminal PIN needles 41 are formed between each upper die punch 21 and each lower die punch 11.

[0047] The design focus of the present utility model lies in: by cooperating with the upper die punch and the lower die punch to press the strip, and cooperating with the blade part being arranged on the lower surface of the stripping blade edge, and using the downward movement of the stripping blade edge to make the blade part pierce the strip, so as to form the terminal PIN needle. This structure can increase the structural strength of the blade part, and the blade part is not easily broken. At the same time, the stamping speed can be 2-3 times that of the conventional piercing, thus improving the production efficiency by 2-3 times, bringing convenience to the production operation.

[0048] The above are only the preferred embodiments of the present utility model, and do not impose any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A stripping knife edge piercing structure, characterized in that: The present invention comprises a lower die assembly, an upper die assembly and a stripping assembly; the lower die assembly is provided with at least one group of lower die punches, and the group of lower die punches is composed of a plurality of lower die punches arranged side by side; the upper die assembly can be movably arranged up and down directly above the lower die assembly, and the upper die assembly is provided with at least one group of upper die punches, and the group of upper die punches is composed of a plurality of upper die punches arranged side by side, and the plurality of upper die punches are respectively located directly above the plurality of lower die punches; the stripping assembly can be movably arranged up and down relative to the upper die assembly, and the stripping assembly is located directly above the lower die assembly, the stripping assembly comprises a stripping frame opening and a stripping knife edge, the stripping frame opening has at least one accommodating groove, the stripping knife edge is arranged in the accommodating groove, the lower surface of the stripping knife edge is provided with a plurality of knife edge portions protruding downward, and the upper and lower surfaces of the stripping knife edge are penetrated with a plurality of first through grooves, the plurality of knife edge portions are respectively located on both sides of the corresponding first through grooves, and the plurality of upper die punches are adapted to the plurality of first through grooves and can be movably arranged up and down in the corresponding first through grooves respectively.

2. The stripping knife edge piercing structure according to claim 1, characterized in that: The lower die punches are divided into two groups arranged on the left and right, and correspondingly, the upper die punches are also divided into two groups arranged on the left and right. The stripping frame has two accommodating grooves, which are arranged on the left and right. There are two stripping blades, which are respectively arranged in the two accommodating grooves.

3. The stripping knife edge piercing structure according to claim 1, characterized in that: The lower mold assembly includes a lower mold outer frame, a lower mold inner frame and a lower mold insert, the lower mold outer frame has a first receiving groove, the lower mold inner frame is arranged in the first receiving groove, the lower mold inner frame has a second receiving groove, the group of lower mold punches is arranged in the second receiving groove, the lower mold insert is arranged at the top of the lower mold inner frame and is located in the first receiving groove, the lower mold insert has a plurality of second through grooves, and the plurality of lower mold punches respectively pass through the plurality of second through grooves and extend upward.

4. The stripping knife edge piercing structure according to claim 3, characterized in that: A first cushion block is arranged at the bottom of the lower die outer frame, a second cushion block is arranged inside the first cushion block, the second cushion block is located directly below the plurality of lower die punches, and a lower spring is arranged at the bottom of the first cushion block.

5. The stripping knife edge piercing structure according to claim 3, characterized in that: A lower building block is arranged between the inner wall of the first receiving groove and the outer wall of the lower mold inner frame.

6. The stripping knife edge piercing structure according to claim 3, characterized in that: There are two first receiving grooves arranged on the left and right, and correspondingly, there are two lower mold inner frames and two lower mold inserts, the two lower mold inner frames and the two lower mold inserts are respectively arranged in the two first receiving grooves, and a third receiving groove is arranged on the lower mold outer frame, and a lower mold floating block is arranged in the third receiving groove.

7. The stripping knife edge piercing structure according to claim 1, characterized in that: An upper building block is arranged between the inner wall of the accommodating groove and the inner wall of the stripping knife edge.

8. The stripping knife edge piercing structure according to claim 1, characterized in that: The upper die assembly comprises a clamping plate insert which is in an inverted U shape. The upper die punch is fixed on the clamping plate insert, and an upper spring is arranged on the top of the clamping plate insert.

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