Sheet-shaped electrical contact forming device

Abstract

The utility model discloses a sheet-shaped electrical contact forming device, which relates to the technical field of electrical contact production and comprises a movable die fixing seat, a pre-upsetting forming die, a pre-upsetting forming die ejector pin, a final upsetting forming die, a bottom die fixing seat, a pre-upsetting forming bottom die, a pre-upsetting forming bottom die ejector pin, a final upsetting forming die ejector pin and a final upsetting forming bottom die. A forced pushing device is arranged between the final upsetting forming die and the final upsetting forming die ejector pin, the final upsetting forming bottom die is arranged on the lower portion of the inner side of the bottom die fixing base, and after the final upsetting forming die and the final upsetting forming bottom die are combined, the sheet-shaped electrical contact can be formed finally. According to the device and the method, the final upsetting forming die ejector pin is additionally arranged in the final upsetting forming die and is driven by the forced pushing device, after the finished electrical contact is formed, the final upsetting forming die ejector pin is driven by the forced pushing device to stretch out, the formed electrical contact is ejected out, and the electrical contact is not adhered to the final upsetting forming die; in this way, the current situation that in the prior art, the formed electrical contact needs to be taken down manually is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric contact production, in particular to a sheet-shaped electric contact forming device. Background Art

[0002] The existing device for forming electric contacts is shown in a patent publication of a sheet-shaped electric contact forming device (CN112743024B). In the patent technical solution, the main deficiencies are as follows:

[0003] 1. After the electric contact is secondary molded (that is, after the final upsetting forming die 7 and the forming bottom die 5 in the technical solution are combined), the electric contact has been formed to become a finished electric contact. However, because the final upsetting forming die 7 lacks a structure for actively pushing out the finished electric contact, the finished electric contact will adhere to the final upsetting forming die 7. At this time, the finished electric contact needs to be removed manually, which is troublesome.

[0004] In summary, based on the above-mentioned patented technical solution, we have proposed a new technical solution around the above-mentioned deficiencies. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sheet-shaped electric contact forming device, which solves the problems raised by the above-mentioned background technology.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] In the first aspect, the utility model proposes a sheet electric contact forming device, including a movable die fixing seat, a pre-upsetting forming die, a pre-upsetting forming die ejector, a final upsetting forming die, a bottom die fixing seat, a pre-upsetting forming bottom die, a pre-upsetting forming bottom die ejector, and also includes:

[0008] A final upsetting forming die ejector pin, wherein a strong pushing device is provided between the final upsetting forming die and the final upsetting forming die ejector pin;

[0009] The final upsetting forming bottom die is arranged at the lower part of the inner side of the bottom die fixing seat. The sheet-shaped electrical contact can be finally formed only after the final upsetting forming die and the final upsetting forming bottom die are combined.

[0010] The forming device can perform primary forming and secondary forming actions respectively. During the secondary forming process, the strong pushing device can make the ejector pin of the final upsetting forming die actively extend so that the finished sheet electric contact does not adhere to the final upsetting forming die, thereby achieving automatic material removal.

[0011] Furthermore, the movable mold fixing seat is installed on a driving device, and the driving device can make the movable mold fixing seat reciprocate in the horizontal direction and the vertical direction. The bottom mold fixing seat is arranged on a side opposite to the movable mold fixing seat, and the bottom mold fixing seat is fixed.

[0012] Furthermore, the pre-upsetting die and the final upsetting die are respectively fixed at the upper and lower parts of the inner side of the movable die fixing seat, the pre-upsetting bottom die is fixed at the upper part of the inner side of the bottom die fixing seat, the pre-upsetting die ejector pin, the final upsetting die ejector pin, and the pre-upsetting bottom die ejector pin are respectively arranged inside the pre-upsetting die, the final upsetting die, and the pre-upsetting bottom die, and relative movement can occur between the pre-upsetting die and the ejector pin of the pre-upsetting die, between the final upsetting die and the ejector pin of the final upsetting die, and between the pre-upsetting bottom die and the ejector pin of the pre-upsetting bottom die.

[0013] Furthermore, cylindrical holes are reserved inside the pre-upsetting die, the final upsetting die, and the pre-upsetting bottom die, and a buffer device is provided inside each cylindrical hole. Each buffer device abuts against the ejector pin of the pre-upsetting die, the ejector pin of the final upsetting die, and the ejector pin of the pre-upsetting bottom die correspondingly. When the ejector pin of the pre-upsetting die, the ejector pin of the final upsetting die, and the ejector pin of the pre-upsetting bottom die retract, the buffer device can give a buffering force in the opposite direction of the displacement direction of the ejector pin of the pre-upsetting die, the ejector pin of the final upsetting die, and the ejector pin of the pre-upsetting bottom die.

[0014] Furthermore, the buffer device is a spring, and the strong push device is a rod-shaped structure connected to the outside and capable of acting independently, and the rod-shaped structure abuts against the ejector pin of the final upsetting forming die.

[0015] Furthermore, the adjacent ends of the pre-upsetting die and the pre-upsetting bottom die are both reserved with matching die cavities, and after the pre-upsetting die and the pre-upsetting bottom die are combined, the two die cavities will jointly form a frustum of a cone.

[0016] Furthermore, the pre-upsetting die, the pre-upsetting die ejector pin, the final upsetting die, the final upsetting die ejector pin, the pre-upsetting bottom die, the pre-upsetting bottom die ejector pin, and the final upsetting bottom die are all made of full tungsten steel.

[0017] The utility model provides a sheet-shaped electric contact forming device. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The sheet electric contact forming device and method, by adding a final upsetting forming die ejector pin in the final upsetting forming die, and the final upsetting forming die ejector pin is driven by a strong pushing device. After the finished electric contact is formed, the final upsetting forming die ejector pin is driven to extend by the strong pushing device to eject the formed electric contact without adhering to the final upsetting forming die. There is no need to manually remove the formed electric contact as in the prior art.

[0019] 2. The sheet electric contact forming device and method has a final upsetting forming bottom die at the inner lower part of the bottom die fixing seat, that is, below the pre-upsetting forming bottom die, so that the primary forming and the secondary forming can be carried out at the same time. When the final upsetting forming die and the final upsetting forming bottom die are combined, the pre-upsetting forming die and the pre-upsetting forming bottom die can also be combined again. In this way, the production efficiency of the electric contact will be doubled compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the sheet-shaped electric contact forming device in the utility model;

[0021] Figure 2 It is a structural schematic diagram of step 1 of the method in the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of step 2 of the method in the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of step three of the method in the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of step 4 of the method of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of step five of the method in the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of step six of the method in the utility model;

[0027] Figure 8 This is a schematic diagram of the structure of step seven of the method in the utility model;

[0028] Fig. 9 It is a structural schematic diagram of step eight of the method in the utility model.

[0029] In the figure: 1. movable die fixing seat; 2. pre-upsetting forming die; 3. pre-upsetting forming die ejector; 4. final upsetting forming die; 5. final upsetting forming die ejector; 6. bottom die fixing seat; 7. pre-upsetting forming bottom die; 8. pre-upsetting forming bottom die ejector; 9. final upsetting forming bottom die; 10. wire; 11. primary pre-upsetting body; 12. secondary pre-upsetting body; 13. finished sheet electric contact. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 The embodiment of the utility model provides a technical solution: a sheet electric contact forming device, comprising a movable die fixing seat 1, a pre-upsetting forming die 2, a pre-upsetting forming die ejector 3, a final upsetting forming die 4, a final upsetting forming die ejector 5, a bottom die fixing seat 6, a pre-upsetting forming bottom die 7, a pre-upsetting forming bottom die ejector 8, and a final upsetting forming bottom die 9, wherein the movable die fixing seat 1 is installed on a driving device, and the driving device can make the movable die fixing seat 1 reciprocate in the horizontal direction and the vertical direction, the bottom die fixing seat 6 is arranged on a side opposite to the movable die fixing seat 1, and the bottom die fixing seat 6 is fixed, the pre-upsetting forming die 2 and the final upsetting forming die 4 are respectively fixed on the movable die fixing seat 1, and the bottom die fixing seat 6 is fixed on the movable die fixing seat 1. The upper and lower parts of the inner side of the seat 1, the pre-upsetting bottom die 7 is fixed to the upper part of the inner side of the bottom die fixing seat 6, the pre-upsetting die ejector pin 3, the final upsetting die ejector pin 5, and the pre-upsetting bottom die ejector pin 8 are respectively arranged inside the pre-upsetting die 2, the final upsetting die 4, and the pre-upsetting bottom die 7, and the pre-upsetting die 2 and the pre-upsetting die ejector pin 3, the final upsetting die 4 and the final upsetting die ejector pin 5, and the pre-upsetting bottom die 7 and the pre-upsetting bottom die ejector pin 8 can all move relative to each other, the final upsetting bottom die 9 is arranged at the lower part of the inner side of the bottom die fixing seat 6, and the sheet-like electrical contact can be finally formed only after the final upsetting die 4 and the final upsetting bottom die 9 are combined;

[0032] The technical solution of this embodiment is further described as follows:

[0033] First, a strong pushing device is arranged between the final upsetting forming die 4 and the ejector pin 5 of the final upsetting forming die. The strong pushing device is a rod-shaped structure connected to the outside and capable of acting independently. The rod-shaped structure abuts against the ejector pin 5 of the final upsetting forming die. The forming device can perform primary forming and secondary forming actions respectively. During the secondary forming process, the strong pushing device can make the ejector pin 5 of the final upsetting forming die actively extend, so that the finished sheet electrical contact does not stick to the final upsetting forming die 4, thereby achieving automatic material removal.

[0034] Secondly, cylindrical holes are reserved inside the pre-upsetting die 2, the final upsetting die 4, and the pre-upsetting bottom die 7. A buffer device is provided inside each cylindrical hole. The buffer device is a spring. Each buffer device is corresponding to the pre-upsetting die ejector pin 3, the final upsetting die ejector pin 5, and the pre-upsetting bottom die ejector pin 8. When the pre-upsetting die ejector pin 3, the final upsetting die ejector pin 5, and the pre-upsetting bottom die ejector pin 8 are retracted, the buffer device can give a contact with the pre-upsetting die ejector pin 3 and the final upsetting die ejector pin 8. The needle 5 and the pre-upsetting bottom die ejector 8 have a buffering force in the opposite displacement direction. The adjacent ends of the pre-upsetting die 2 and the pre-upsetting bottom die 7 are reserved with matching die cavities, and after the pre-upsetting die 2 and the pre-upsetting bottom die 7 are combined, the two die cavities will jointly form a frustum shape. The pre-upsetting die 2, the pre-upsetting die ejector 3, the final upsetting die 4, the final upsetting die ejector 5, the pre-upsetting bottom die 7, the pre-upsetting bottom die ejector 8, and the final upsetting bottom die 9 are all made of full tungsten steel.

[0035] Also, see Figure 2-8 The method for forming the sheet-shaped electrical contact comprises the following steps:

[0036] Step 1: Align the ejector pin 3 of the pre-upsetting die with the pre-upsetting die 7, and place the cut wire material 10 between the pre-upsetting die 2 and the pre-upsetting die 7;

[0037] Step 2: The driving device drives the movable die fixing seat 1 to move toward the direction close to the bottom die fixing seat 6, and at the same time, the pre-upsetting die ejector pin 3 pushes the wire 10 to the position of the pre-upsetting bottom die 7 and then retracts. After the pre-upsetting die 2 touches the pre-upsetting bottom die 7, it retracts and extrude the wire 10, so that the wire 10 is extruded into a truncated cone shape to obtain a primary pre-upsetting body 11. At this time, the driving device drives the movable die fixing seat 1 to move toward the direction away from the bottom die fixing seat 6;

[0038] Step 3: The driving device drives the movable die fixing seat 1 to move upward, so that the final upsetting die 4 is aligned with the pre-upsetting bottom die 7;

[0039] Step 4: The driving device drives the movable die fixing seat 1 to move toward the bottom die fixing seat 6 again, until the final upsetting die 4 is combined with the pre-upsetting bottom die 7, and the primary pre-upsetting body 11 is subjected to secondary extrusion molding to obtain a secondary pre-upsetting body 12;

[0040] Step 5: The driving device drives the movable mold fixing seat 1 to move away from the bottom mold fixing seat 6 again, and moves downward at the same time. When it starts to move away from the bottom mold fixing seat 6, the pre-upsetting bottom mold ejector pin 8 moves toward the movable mold fixing seat 1, so that the secondary pre-upsetting body 12 is separated from the pre-upsetting bottom mold 7 and then retracted, so that the secondary pre-upsetting body 12 is located inside the final upsetting mold 4;

[0041] Step 6: Repeat step 1, align the ejector pin 3 of the pre-upsetting die with the pre-upsetting bottom die 7, and then set the new wire 10 between the pre-upsetting die 2 and the pre-upsetting bottom die 7, but at this time, the secondary pre-upsetting body 12 is already inside the final upsetting die 4;

[0042] Step 7: The driving module drives the movable mold fixing seat 1 to move toward the bottom mold fixing seat 6 for the third time, and extrude the new wire material 10 in step 6 into a pre-upsetting body 11. At the same time, the final upsetting forming die 4 is combined with the final upsetting forming bottom die 9 to obtain a finished sheet-shaped electrical contact 13;

[0043] Step 8: The driving module drives the movable mold fixing base 1 to move away from the bottom mold fixing base 6 for the third time. At the same time, the strong pushing device pushes out the final upsetting mold ejector 5, so that the finished sheet electric contact 13 is separated from the final upsetting mold 4 and then retracted.

Claims

1. A sheet-shaped electric contact forming device, comprising a movable die fixing seat (1), a pre-upsetting die (2), a pre-upsetting die ejector pin (3), a final upsetting die (4), a bottom die fixing seat (6), a pre-upsetting die (7), and a pre-upsetting die ejector pin (8), characterized in that: Also includes: A final upsetting forming die ejector pin (5), wherein a strong pushing device is provided between the final upsetting forming die (4) and the final upsetting forming die ejector pin (5); A final upsetting forming bottom die (9) is arranged at the lower part of the inner side of the bottom die fixing seat (6); after the final upsetting forming die (4) and the final upsetting forming bottom die (9) are combined, the sheet-shaped electric contact is formed.

2. A sheet-shaped electric contact forming device according to claim 1, characterized in that: The molding device can respectively perform primary molding and secondary molding actions. During the secondary molding process, the strong pushing device can cause the ejector pin (5) of the final upsetting molding die to actively extend, so that the finished sheet-shaped electrical contact does not adhere to the final upsetting molding die (4), thereby achieving automatic material removal.

3. A sheet-shaped electric contact forming device according to claim 1, characterized in that: The movable mold fixing seat (1) is mounted on a driving device, and the driving device can allow the movable mold fixing seat (1) to reciprocate in the horizontal direction and the vertical direction. The bottom mold fixing seat (6) is arranged on a side opposite to the movable mold fixing seat (1), and the bottom mold fixing seat (6) is fixed.

4. A sheet-shaped electric contact forming device according to claim 2, characterized in that: The pre-upsetting die (2) and the final upsetting die (4) are respectively fixed to the upper and lower parts of the inner side of the movable die fixing seat (1); the pre-upsetting die bottom die (7) is fixed to the upper part of the inner side of the bottom die fixing seat (6); the pre-upsetting die ejector pin (3), the final upsetting die ejector pin (5), and the pre-upsetting die bottom die ejector pin (8) are respectively arranged inside the pre-upsetting die (2), the final upsetting die (4), and the pre-upsetting die bottom die (7); and relative movement can occur between the pre-upsetting die (2) and the pre-upsetting die ejector pin (3), between the final upsetting die (4) and the final upsetting die ejector pin (5), and between the pre-upsetting die bottom die (7) and the pre-upsetting die ejector pin (8).

5. A sheet-shaped electric contact forming device according to claim 2, characterized in that: The pre-upsetting die (2), the final upsetting die (4), and the pre-upsetting die bottom die (7) are all provided with cylindrical holes in their interiors, and a buffer device is provided in the interior of each cylindrical hole. Each buffer device is in contact with a corresponding pre-upsetting die ejector pin (3), a final upsetting die ejector pin (5), and a pre-upsetting die bottom die ejector pin (8). When the pre-upsetting die ejector pin (3), the final upsetting die ejector pin (5), and the pre-upsetting die bottom die ejector pin (8) are retracted, the buffer device can provide a buffering force in the opposite direction to the displacement direction of the pre-upsetting die ejector pin (3), the final upsetting die ejector pin (5), and the pre-upsetting die bottom die ejector pin (8).

6. A sheet-shaped electric contact forming device according to claim 5, characterized in that: The buffer device is a spring, and the strong push device is a rod-shaped structure connected to the outside and capable of acting independently, and the rod-shaped structure abuts against the ejector pin (5) of the final upsetting forming die.

7. A sheet-shaped electric contact forming device according to claim 1, characterized in that: Adjacent ends of the pre-upsetting die (2) and the pre-upsetting bottom die (7) are both reserved with matching die cavities, and after the pre-upsetting die (2) and the pre-upsetting bottom die (7) are combined, the two die cavities will jointly form a truncated cone shape.

8. A sheet-shaped electric contact forming device according to claim 1, characterized in that: The pre-upsetting forming die (2), the pre-upsetting forming die ejector pin (3), the final upsetting forming die (4), the final upsetting forming die ejector pin (5), the pre-upsetting forming bottom die (7), the pre-upsetting forming bottom die ejector pin (8), and the final upsetting forming bottom die (9) are all made of full tungsten steel.

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