Cold extrusion processing device for electric connector joint

Abstract

The utility model discloses a cold extrusion processing device for an electric connector joint. The cold extrusion processing device comprises a loading assembly and a template box, wherein a cavity is formed in the template box; the loading assembly comprises a connecting seat fixedly connected with an external power mechanism, and the lower surface of the connecting seat is fixedly connected with a cold extrusion head through a fixing block; a forming part is arranged inside the template box, the forming part is a solid body with a cavity formed inside, the upper cavity of the forming part is an extrusion channel allowing a cold extrusion head to enter, a forming block detachably connected with the inner wall of the cavity is arranged in the lower cavity of the forming part, and a first forming cavity matched with an electric connector in shape is formed inside the forming block; and the extrusion channel communicates with the first forming cavity. The forming block can be detached and replaced after being abraded, the whole set of die does not need to be replaced, and production cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, in particular to a cold extrusion processing device for an electric connector joint. Background Art

[0002] As a basic electrical component, electrical connectors are widely used in electrical circuits in various industries such as aviation, aerospace, hydropower, electronic communications, transportation, and oil drilling. They connect or disconnect circuits, realize the transmission of electrical signals, and connect various electronic equipment. Some electrical connectors have complex shapes and are usually processed and formed using machining centers. They have the advantages of high machining accuracy, automatic control, and high efficiency. However, the purchase price of machining centers is expensive, which leads to an increase in machining costs. Although ordinary machine tools have lower costs, their machining efficiency is also lower.

[0003] Cold extrusion technology can not only quickly produce parts with complex shapes, but also greatly reduce costs compared to machining centers. However, cold extrusion dies are prone to wear and deformation after long-term use, resulting in reduced machining accuracy of the workpiece. After wear, the entire set of dies often needs to be replaced, which in turn affects the service life of the entire set of cold extrusion technology and increases production costs. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a cold extrusion processing device for an electrical connector joint, which solves the problem in the prior art that the cold extrusion die is easily worn and deformed, resulting in a short service life and increased production costs.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provided is a cold extrusion processing device for an electric connector joint, comprising a loading component and a template box with a cavity inside; the loading component comprises a connecting seat fixedly connected to an external power mechanism, and the lower surface of the connecting seat is fixedly connected to a cold extrusion head via a fixing block; a forming part is arranged inside the template box, the forming part is a solid with a cavity inside, the upper cavity of the forming part is an extrusion channel allowing the cold extrusion head to enter, a forming block detachably connected to the inner wall of the cavity is arranged in the lower cavity, a first forming cavity matching the shape of the electric connector is arranged inside the forming block; the extrusion channel is connected to the first forming cavity.

[0007] The beneficial effects of the utility model are as follows: in this solution, since the first molding cavity is subjected to a large load repeatedly for a long time, it is easy to wear or deform. At this time, the molding block can be disassembled from the molding part, and taken out from the template box and replaced with a new molding block, thereby avoiding replacing the entire set of molds and reducing production costs.

[0008] Furthermore, a fixing part is also provided inside the template box, the fixing part and the bottom of the template box are both fixedly connected to the lower mold base, and the forming part is placed above the fixing part;

[0009] The top end of the template box is an open end, and a cover plate bolted thereto is arranged on the top end, and a through hole communicating with the extrusion channel is arranged on the cover plate.

[0010] The beneficial effects of the above technical solution are: the cover plate can press the forming part onto the fixing part to prevent it from moving; after removing the cover plate, the forming part can be taken out of the template box to facilitate replacement of the forming block.

[0011] Furthermore, the cold extrusion processing device for the electrical connector joint also includes a push rod, a through hole connected to the first molding cavity is formed through the center of the fixed part, and the push rod extends into the first molding cavity from the through hole of the fixed part; one end of the push rod extending into the fixed part is fixedly connected to a movable plate, and the other end is connected to an external power mechanism. After molding is completed, when the cold extrusion head exits the template box, the external power mechanism can drive the push rod to move upward and push the molded electrical connector out of the template box to facilitate demolding of the workpiece.

[0012] Furthermore, a pad fixed to the lower die base is provided below the fixing portion, and both the lower die base and the pad are provided with through holes for allowing the ejector rod to pass through; the ejector rod is externally fixedly connected to a limit block;

[0013] The diameter of the through hole of the pad is smaller than the diameter of the limiting block; the diameter of the through hole of the fixing portion is larger than the diameter of the limiting block.

[0014] The beneficial effect of the above technical solution is that the mandrel can fall freely after the external force is removed, and the pad can play a buffering role to prevent the mandrel from damaging the limit block due to too much impulse when falling. The limit block can limit the falling limit position of the mandrel.

[0015] Furthermore, a top core is fixedly connected to the top of the cover plate, a first channel and a second channel are opened inside the top core, and the first channel, the second channel and the extrusion channel are connected in sequence;

[0016] The diameters of the second channel and the extrusion channel are equal, and the diameter of the first channel is larger than the second channel. The diameter of the metal blank should be larger than the diameter of the first forming cavity. The first channel is provided to facilitate the placement of the metal blank and achieve the effect of initial positioning of the metal blank.

[0017] Furthermore, the top core is in an inverted T shape, and an upper release plate is provided on the outer sleeve of the top core, and the upper release plate is fixedly connected to the cover plate to fix the top core.

[0018] Furthermore, a guide seat is provided on one side of the template box, a guide column is fixedly connected to the connection seat, and a through hole is provided inside the guide seat to allow the guide column to extend in, so as to ensure that the cold extrusion head makes vertical linear motion during the loading process and ensure the processing quality.

[0019] Furthermore, a lower limit column is provided on one side of the template box, and an upper limit column is fixedly connected to the connecting seat. The upper and lower limit columns can limit the extreme displacement of the cold extrusion head, protect the cold extrusion head, and avoid excessive extrusion of the cold extrusion head.

[0020] Furthermore, a second molding cavity is provided at the lower end of the cold extrusion head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cold extrusion processing device for the electrical connector in a working state;

[0022] Figure 2 for Figure 1 Sectional view of the middle template box;

[0023] Figure 3 It is a schematic diagram of the cold extrusion processing device for the electrical connector joint in a non-working state;

[0024] Figure 4 is a front view of an electrical connector in one embodiment;

[0025] Figure 5 is a side view of an electrical connector in one embodiment.

[0026] Among them, 1. cold extrusion head; 2. fixed block; 3. connecting seat; 4. guide column; 5. guide seat; 6. top core; 7. upper stripping plate; 8. cover plate; 9. forming block; 10. template box; 11. forming part; 12. upper limit column; 13. lower limit column; 14. lower die seat; 15. pad; 16. ejector rod; 17. limit block; 18. first channel; 19. second channel; 20. first forming cavity; 21. second forming cavity; 22. electrical connector; 23. movable plate; 24. fixed part; 25. extrusion channel. DETAILED DESCRIPTION

[0027] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0028] like Figure 1-Figure 3 As shown, the cold extrusion processing device for the electrical connector joint of the present scheme includes a loading component and a template box 10 with a hollow interior; the loading component includes a connecting seat 3 fixedly connected to an external power mechanism, and the lower surface of the connecting seat 3 is fixedly connected to a cold extrusion head 1 through a fixing block 2.

[0029] A molding part 11 is provided inside the template box 10. The molding part 11 is a solid body with a cavity inside. The upper cavity of the molding part 11 is an extrusion channel 25 allowing the cold extrusion head 1 to enter. A molding block 9 detachably connected to the inner wall of the cavity is provided in the lower cavity. A first molding cavity 20 matching the shape of the electrical connector 22 is provided inside the molding block 9; the extrusion channel 25 is connected to the first molding cavity 20.

[0030] The general principle of cold extrusion is: pressure is applied to the metal blank through a cold extrusion head 1 fixed on an external power mechanism, and the cold extrusion head 1 enters the forming part 11 from the extrusion channel 25. The pressure applied by the cold extrusion head 1 causes the metal blank to be pressed into the first forming cavity 20 and produce plastic deformation, and the shape is consistent with the shape of the first forming cavity 20, thereby producing an electrical connector 22.

[0031] Due to long-term repeated heavy loads, the first molding cavity 20 is prone to wear or deformation. At this time, the molding block 9 can be removed from the molding part 11, and taken out from the template box 10 and replaced with a new molding block 9, thereby avoiding the need to replace the entire mold and reducing production costs. The molding block 9 is preferably made of SKH-9 high-speed tool steel, which has a fine, uniform, well-distributed carbide structure and is wear-resistant and impact-resistant.

[0032] In one embodiment of the present invention, a fixing portion 24 is further provided inside the template box 10 , the fixing portion 24 and the bottom of the template box 10 are both fixedly connected to the lower mold base 14 , and the molding portion 11 is placed above the fixing portion 24 .

[0033] The top of the template box 10 is an open end, and a cover plate 8 bolted thereto is provided at the top of the template box 10, and a through hole communicating with the extrusion channel 25 is provided on the cover plate 8. The cover plate 8 can press the forming part 11 against the fixing part 24 to prevent it from moving; after removing the cover plate 8, the forming part 11 can be taken out of the template box 10 to facilitate replacement of the forming block 9.

[0034] Furthermore, the utility model also includes a push rod 16, and a through hole communicating with the first molding cavity 20 is formed through the center of the fixed portion 24, and the push rod 16 extends into the first molding cavity 20 from the through hole of the fixed portion 24; one end of the push rod 16 extending into the fixed portion 24 is fixedly connected to a movable plate 23, and the other end is connected to an external power mechanism. After molding is completed, when the cold extrusion head 1 exits the template box 10, the external power mechanism can drive the push rod 16 to move upward and push the molded electrical connector 22 out of the template box 10, so as to facilitate demolding of the workpiece.

[0035] A pad 15 fixed to the lower die base 14 is provided below the fixing portion 24, and both the lower die base 14 and the pad 15 are provided with through holes allowing the ejector rod 16 to pass through; the outer part of the ejector rod 16 is fixedly connected to a limiting block 17; the diameter of the through hole of the pad 15 is smaller than the diameter of the limiting block 17; the diameter of the through hole of the fixing portion 24 is larger than the diameter of the limiting block 17.

[0036] After the workpiece is ejected from the template box 10, the external force will be removed. When the external force is removed, the ejector pin 16 can fall freely. The backing plate 15 can play a buffering role to prevent the ejector pin 16 from damaging the limit block 17 due to too much impulse when falling. The limit block 17 can limit the falling limit position of the ejector pin 16. Since the ejector pin 16 is movably connected to the forming block 9, the limit block 17 can prevent the ejector pin 16 from being squeezed out when the cold extrusion head 1 is loaded downward.

[0037] A top core 6 is fixedly connected to the top of the cover plate 8, and a first channel 18 and a second channel 19 are opened inside the top core 6. The first channel 18, the second channel 19 and the extrusion channel 25 are connected in sequence; the diameters of the second channel 19 and the extrusion channel 25 are equal, and the diameter of the first channel 18 is larger than that of the second channel 19.

[0038] The diameter of the metal blank should be greater than the diameter of the first forming cavity 20. The first channel 18 is provided to facilitate the placement of the metal blank and play the role of initial positioning of the metal blank. The first channel 18, the second channel 19 and the extrusion channel 25 are equivalent to additionally providing a variable diameter channel above the first forming cavity 20. Through the variable diameter channel, the material can be better guided to flow during the cold extrusion process, the stress concentration of the material during the deformation process can be reduced, the forming difficulty can be reduced, the forming quality and production efficiency can be improved, and the residual material and stress concentration inside the mold can be reduced to a certain extent, which can reduce the wear degree of the mold and extend the service life of the mold.

[0039] Preferably, the top core 6 is in an inverted T-shape, and an upper release plate 7 is provided on the outer sleeve of the top core 6, and the upper release plate 7 is fixedly connected to the cover plate 8 to fix the top core 6. The upper release plate 7 can not only cover the top core 6 to limit the deformation of the top core 6, but also press the top core 6 onto the cover plate 8 through the T-shaped structure of the top core 6.

[0040] During implementation, it is preferred to set a guide seat 5 on one side of the template box 10, and a guide column 4 is fixedly connected to the connecting seat 3; a through hole is provided inside the guide seat 5 to allow the guide column 4 to extend in. It is ensured that the cold extrusion head 1 makes vertical linear motion during the loading process to ensure the processing quality. A lower limit column 13 is set on one side of the template box 10, and an upper limit column 12 is fixedly connected to the connecting seat 3. The upper and lower limit columns can limit the extreme displacement of the cold extrusion head 1, protect the cold extrusion head 1, and avoid excessive extrusion of the cold extrusion head 1.

[0041] In one embodiment of the present invention, a second molding cavity 21 is provided at the lower end of the cold extrusion head 1. In some embodiments, the shape of the electrical connector 22 is as follows: Figure 4 and Figure 5 As shown, this is to facilitate the assembly of the electrical connector 22 with other components, so that the upper part of the electrical connector 22 is shaped like a plate. However, during molding, since the size of the upper part of this type of electrical connector 22 is smaller than the lower part, the first molding cavity 20 also needs to be made into a structure with a small top and a large bottom in order to match the shape. The resistance that the metal blank needs to overcome when entering the first molding cavity 20 is greatly increased, and it is difficult to obtain a high-quality finished product with uniform force. In view of the above problems, the end of the cold extrusion head 1 is directly used as the second molding cavity 21, and the upper part of the electrical connector 22 is molded in the second molding cavity 21 of the cold extrusion head 1, so as to ensure uniform force during deformation.

[0042] In summary, the forming block 9 in the present invention can be disassembled and replaced after being worn, without having to replace the entire mold, which can save production costs.

Claims

1. A cold extrusion processing device for an electrical connector, characterized in that: The invention comprises a loading component and a template box (10) with a cavity inside; the loading component comprises a connecting seat (3) fixedly connected to an external power mechanism, the lower surface of the connecting seat (3) being fixedly connected to a cold extrusion head (1) via a fixing block (2); a forming part (11) is arranged inside the template box (10), the forming part (11) is a solid body with a cavity inside, the upper cavity of the forming part (11) is an extrusion channel (25) allowing the cold extrusion head (1) to enter, the lower cavity is provided with a forming block (9) detachably connected to the inner wall of the cavity, the forming block (9) is provided with a first forming cavity (20) matching the shape of an electrical connector (22); the extrusion channel (25) is connected to the first forming cavity (20).

2. The cold extrusion processing device for electrical connector joints according to claim 1, characterized in that: The template box (10) is further provided with a fixing portion (24) inside, the fixing portion (24) and the bottom of the template box (10) are both fixedly connected to the lower mold base (14), and the molding portion (11) is placed above the fixing portion (24); The top end of the template box (10) is an open end, and a cover plate (8) bolted thereto is provided at the top end, and a through hole communicating with the extrusion channel (25) is provided on the cover plate (8).

3. The cold extrusion processing device for electrical connector joints according to claim 2, characterized in that: It also includes a push rod (16), the center of the fixed part (24) is penetrated by a through hole connected to the first molding cavity (20), and the push rod (16) extends into the first molding cavity (20) from the through hole of the fixed part (24); one end of the push rod (16) extending into the fixed part (24) is fixedly connected to the movable plate (23), and the other end is connected to an external power mechanism.

4. The cold extrusion processing device for electrical connector joints according to claim 3, characterized in that: A backing plate (15) fixed to the lower die base (14) is provided below the fixing portion (24); both the lower die base (14) and the backing plate (15) are provided with through holes for the ejector rod (16) to pass through; the ejector rod (16) is externally fixedly connected to a limiting block (17); The diameter of the through hole of the pad (15) is smaller than the diameter of the limiting block (17); and the diameter of the through hole of the fixing portion (24) is larger than the diameter of the limiting block (17).

5. The cold extrusion processing device for electrical connector joints according to claim 2, characterized in that: A top core (6) is fixedly connected to the top of the cover plate (8), a first channel (18) and a second channel (19) are provided inside the top core (6), and the first channel (18), the second channel (19) and the extrusion channel (25) are connected in sequence; The diameters of the second channel (19) and the extrusion channel (25) are equal, and the diameter of the first channel (18) is larger than that of the second channel (19).

6. The cold extrusion processing device for electrical connector joints according to claim 5, characterized in that: The top core (6) is in an inverted T-shape, and an upper release plate (7) is provided on the outer shell of the top core (6), and the upper release plate (7) is fixedly connected to the cover plate (8).

7. The cold extrusion processing device for electrical connector joints according to claim 1, characterized in that: A guide seat (5) is provided on one side of the template box (10), and a guide column (4) is fixedly connected to the connecting seat (3); a through hole is provided inside the guide seat (5) for the guide column (4) to extend into.

8. The cold extrusion processing device for electrical connector joints according to claim 1, characterized in that: A lower limit column (13) is provided on one side of the template box (10), and an upper limit column (12) is fixedly connected to the connecting seat (3).

9. The cold extrusion processing device for electrical connector joints according to claim 1, characterized in that: A second molding cavity (21) is provided at the lower end of the cold extrusion head (1).

Images