Automatic welding device for high-conductivity contact and copper electrode

Abstract

The utility model discloses an automatic welding device for a high-conductivity contact and a copper electrode, which comprises a first conveying device and a resistance welding machine, the first conveying device comprises a conveying belt and further comprises a second conveying device, the second conveying device is used for conveying the electric contact and the copper electrode on the conveying belt to preset positions, and the resistance welding machine is used for welding the electric contact and the copper electrode on the conveying belt. And the resistance welding machine is used for welding the electric contact and the copper electrode at the preset position. The first conveying device conveys accessories to be welded to the position near the resistance welding machine, the second conveying device is matched with the first conveying device to transfer the accessories near the resistance welding machine to the preset position of the station of the resistance welding machine, and an upper motor and a lower motor of the motor welding machine are clamped, electrified and pressed to complete welding of an electric contact and a copper electrode.

Description

Technical Field

[0001] The utility model relates to an automatic welding device for a high-conductivity contact and a copper electrode. Background Art

[0002] An electrical contact is an electrical contact structure widely used in electrical systems. Different alloy materials are used to process highly conductive electrical contacts, such as copper-graphite alloy materials and other copper-based highly conductive contacts. Not only does the material of the electrical contact play an important role in the performance of electrical appliances, but the welding quality of the electrical contact also has a significant impact on the performance and life of the product. Traditional methods for welding electrical contacts are mostly brazing. For example, publication number CN 117415409 A discloses a welding device and a welding method for a multi-component contact assembly. Brazing requires the use of brazing material, which is not conducive to automated welding and processing of electrical contacts. Utility Model Content

[0003] In view of the above shortcomings, the purpose of the utility model is to provide an automatic welding device for high-conductivity contacts and copper electrodes.

[0004] To this end, the utility model provides an automatic welding device for highly conductive contacts and copper electrodes, comprising a first conveying device and a resistance welding machine, wherein the first conveying device comprises a conveyor belt and also comprises a second conveying device, wherein the second conveying device is used to convey the electric contacts and copper electrodes on the conveyor belt to a predetermined position, and the resistance welding machine welds the electric contacts and copper electrodes at the predetermined position.

[0005] Furthermore, it includes a supporting base, and the second conveying device includes a pushing block arranged on the conveyor belt, and the pushing block pushes one of the electric contacts or copper electrodes to the bearing position of the supporting base under the action of the conveyor belt, and when one of the electric contacts or copper electrodes is placed at the bearing position, the upper surface of the load at the bearing position is lower than the upper surface of the conveyor belt or is flush with the upper surface of the conveyor belt.

[0006] Furthermore, the support base is provided with a positioning groove, and the width of the positioning groove matches the width of the electrical contact and the copper electrode.

[0007] Furthermore, the positioning groove is provided with a guiding inclined surface in a mirror-symmetrical manner toward one end of the conveyor belt.

[0008] Furthermore, a support column is provided below the bottom of the support base, and a spring is mounted on the support column. The upper end of the spring is connected to the bottom of the support seat, and a limit pressure plate is provided above the support base. The limit pressure plate is pressed at a specified position of the support base to push the support base to move downward so that the upper surface of the load is lower than the surface of the conveyor belt or flush with the surface of the conveyor belt.

[0009] Furthermore, it also includes a limit plate, which is arranged above the bearing position of the support base, and the bottom end of the limit plate is higher than the limit pressure plate for cooperating with the upper surface of the copper electrode or the electric contact.

[0010] Furthermore, it also includes a material storage box, and a guide plate is provided between the material storage box and the positioning groove. The movement of the conveyor belt drives the electric contacts to push the welded electric contacts to slide along the guide plate into the material storage box.

[0011] Furthermore, the support base is provided with a through hole, and the through hole is used to cooperate with the lower electrode of the resistance welding machine.

[0012] The second conveying device is a clamping part, and the clamping part and the upper electrode of the resistance welding machine are arranged on the guide rail and move along the guide rail.

[0013] Furthermore, limiting baffles are provided on both sides of the conveyor belt, and the side walls of the support base of the welding machine for carrying the copper electrodes or electrical contacts and the designated positions of the baffles are provided with openings for clamping by the clamping part.

[0014] The beneficial technical effects of the utility model are:

[0015] (1) The utility model discloses an automatic welding device for a high-conductivity contact and a copper electrode, comprising a first conveying device and a second conveying device. The first conveying device comprises a conveyor belt to convey the accessories to be welded to the vicinity of a resistance welding machine. The second conveying device cooperates with the first conveying device to transfer the accessories near the resistance welding machine to a predetermined position of the resistance welding machine station. The upper and lower motors of the resistance welding machine clamp, energize, and press to complete the welding of the electric contact and the copper electrode.

[0016] (2) In a specific embodiment of the present invention, the second conveying device adopts a push block connected to the conveyor belt to cooperate with a liftable support base. The end of the conveyor belt is a predetermined distance away from the support base. The push block pushes the first accessory to move toward the support base until most of the accessory (i.e., the center of gravity is transferred to the support base). The second accessory is placed on the conveyor belt position behind the first accessory. The second accessory continues to move forward and pushes the first accessory to continue to move forward along the positioning groove of the support base until it moves to the specified position. The limit pressure plate is pressed down, and the support base moves downward. The lower surface of the first accessory is lower than or flush with the upper surface of the second accessory. The second accessory moves along the first accessory. The surface of the component moves forward to the specified position, the upper electrode of the electric welder is pressed down, the upper and lower motors clamp the first component and the second component (i.e., the electric contact and the copper electrode), power is turned on and the top pressure is pressed to complete the welding, the limit pressure plate rises, and the push block continues to push the welded combined component forward, and then the next first component to be welded continues to push the welded combined component forward until it enters the material box along the guide plate. Compared with directly clamping and putting it into the material storage box after welding is completed, this technical solution has sufficient time for the welded combined component to cool down, and can avoid the problem of poor welding position when putting it into the material box due to incomplete solidification of the molten core and softening of the material due to the high temperature of the component.

[0017] (3) The specific embodiment of the utility model also provides a method of transferring the accessories transported by the conveyor belt to the vicinity of the resistance welding machine to a predetermined position by clamping. After welding is completed, the workpiece can be placed in a storage box by setting the clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a specific embodiment 1 of the utility model;

[0019] Figure 2 A top view schematic diagram of a support base;

[0020] Figure 3 This is a schematic diagram of Example 2.

[0021] Explanation of the reference numerals: 1. conveyor belt; 101. limit baffle; 2. resistance welding machine; 3. accessories; 4. push block; 5. support base; 501. positioning groove; 502. guide slope; 503. through hole; 6. clamping part; 7. opening; 8. support column; 9. spring; 10. limit pressure plate; 11. limit plate; 12. storage box. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Reference Figures 1 to 3 As shown, the utility model is an automatic welding device for high-conductivity contacts and copper electrodes, comprising a first conveying device, a second conveying device and a resistance welding machine 2, wherein the first conveying device comprises a conveyor belt 1, and the second conveying device is used to convey the electric contacts and copper electrodes on the conveyor belt 1 to a predetermined position, and the resistance welding machine 2 welds the electric contacts and copper electrodes at the predetermined position. The first conveying device conveys the two accessories 3 (electric contacts and copper electrodes) to be welded to the end of the conveyor belt 1, and the two sides of the conveyor belt 1 are provided with limit baffles 101 to prevent the accessories 3 from shifting in the width direction, and the conveyor belt 1 can be operated intermittently, and the second conveying device transfers the two accessories 3 at the end of the conveyor belt 1 to the predetermined position between the upper and lower electrodes of the resistance welding machine 2, at which time one end of the copper electrode and one end of the electric contact are partially overlapped together, and the upper and lower electrodes of the resistance welding machine 2 clamp the position (welding position) where the two accessories 3 are overlapped, and apply pre-pressure, and the welding part is heated by electricity and lasts for a certain period of time to complete the welding work, and the workpiece after welding is put into the storage box 12 by clamping or pushing.

[0024] Reference Figure 1 and Figure 2 As shown, it is the embodiment 1 of the utility model, which also includes a support base 5, and the second conveying device includes a push block 4 arranged on the conveyor belt 1. The push block 4 pushes a part of the electric contact or copper electrode away from the conveyor belt 1 and moves to the bearing position of the support base 5 under the action of the conveyor belt 1. The distance between the conveyor belt 1 and the support base 5 is such that when the accessory 3 completely leaves the conveyor belt 1, the center of gravity of the accessory 3 is transferred to the support base 5, and the upper surface of the load (i.e., the accessory 3) at the bearing position is lower than the upper surface of the conveyor belt 1 or flush with the upper surface of the conveyor belt 1. The conveyor belt 1 continues to run and drives the second accessory to the top of the first accessory, so that the end parts are partially overlapped. The upper and lower electrodes of the resistance welding machine 2 clamp and perform welding work.

[0025] In the above embodiment 1, referring to Figure 2 As shown, the support base 5 is provided with a positioning groove 501, the width of which matches the width of the electric contact and the copper electrode, and the positioning groove 501 can prevent the electric contact and the copper electrode from being stacked and causing a width deviation that affects the welding quality. Preferably, the positioning groove 501 is provided with a guide slope 502 in a mirror-symmetrical manner toward one end of the conveyor belt 1, and when the push block 4 pushes the first accessory or the second accessory to cause a width deviation, the guide slope 502 can correct the width deviation.

[0026] In the above embodiment 1, since the upper surface of the load (i.e., accessory 3) at the load-bearing position is lower than the upper surface of the conveyor belt 1 or flush with the upper surface of the conveyor belt 1, the second accessory can be smoothly pushed above the upper surface of the first accessory. However, there is a certain height difference in the process of the first accessory being transferred from the conveyor belt 1 to the support base 5. Both ends of the first accessory have a falling process, which easily leads to position deviation. Figure 1 As shown, a support column 8 is provided below the bottom of the support base 5, and a spring 9 is sleeved on the support column 8 (the number of support columns 8 and springs 9 is several), and the upper end of the spring 9 is connected to the bottom of the support base. A limit pressing plate 10 is provided above the support base 5, and the limit pressing plate 10 is pressed at a specified position of the support base 5 to push the support base 5 to move downward, so that the upper surface of the load (i.e., the first accessory) is lower than the surface of the conveyor belt 1 or flush with the surface of the conveyor belt 1. In this embodiment, when the first accessory leaves the conveyor belt 1, the limit pressing plate 10 presses down so that one end of the second accessory can be smoothly stacked on the top of the first accessory. When the first accessory has not reached the predetermined position, the second accessory can push the first accessory to the predetermined position, and the limit pressing plate 10 moves down again. At this time, the conveyor belt 1 can be paused first. After the limit pressing plate 10 is pressed in place, the conveyor belt 1 continues to drive the second accessory to move to the top of the first accessory. At this time, the limit pressing plate 10 not only makes the support base 5 move downward, but also can limit the position of the first accessory in the length direction, so as to avoid the friction between the second accessory and the first accessory causing the second accessory to produce displacement deviation.

[0027] In the above embodiment, referring to Figure 1 As shown, it also includes a limit plate 11, which is arranged above the bearing position of the support base 5. In this embodiment, the limit plate 11 is connected to the limit pressure plate 10 by a connecting rod, and is vertically lifted and lowered under the drive of the same driving device. The driving device can adopt air pressure, hydraulic device or servo motor. The bottom end of the limit plate 11 is higher than the limit pressure plate 10 and is used to cooperate with the upper surface of the copper electrode or electric contact (first accessory). The limit plate 11 can keep the first accessory stable during the pressing process, and the position of the limit plate 11 can also be set as a baffle of the electric contact to prevent the second accessory from being positioned in the length direction, so that the stacking position of the first accessory and the second accessory is accurate.

[0028] In the above embodiment, referring to Figure 1 As shown, a material storage box 12 is also included, and a guide plate is provided between the material storage box 12 and the positioning groove 501. The conveyor belt 1 drives the first accessory to push the welded electric contact to slide along the guide plate into the material storage box 12. In this embodiment, a push device can be separately provided to push the welded assembly accessories to move into the material storage box 12, or the subsequent accessories can be continuously moved forward to push the welded accessories to fall into the material storage box 12 one after another.

[0029] In the above embodiment, referring to Figure 2 As shown, the support base 5 is provided with a through hole 503 , and the through hole 503 is used to cooperate with the lower electrode of the resistance welding machine 2 .

[0030] Reference Figure 3 As shown, the specific embodiment 2 of the utility model is basically the same as the embodiment 1, except that the second conveying device includes a clamping part 6, and the clamping part 6 and the upper electrode of the resistance welding machine 2 are arranged on the guide rail and move along the guide rail. Figure 3 One side of the device is shown, and the other side is also provided with a clamping portion 6 for clamping one of the accessories respectively. The side wall of the support base 5 of the welding machine for carrying the copper electrode or electrical contact and the designated position of the baffle are provided with openings 7 for clamping by the clamping portion 6. The rear end of the resistance welding machine 2 can be provided with a pushing device or another clamping portion 6 for conveying the welded combined accessories 3 to the storage box 12.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic welding device for a high-conductivity contact and a copper electrode, comprising a first conveying device and a resistance welding machine, characterized in that: The first conveying device includes a conveyor belt, and also includes a second conveying device, the second conveying device is used to convey the electric contact and the copper electrode on the conveyor belt to a predetermined position, and the resistance welding machine welds the electric contact and the copper electrode at the predetermined position; The second conveying device comprises a push block arranged on the conveyor belt, and the push block pushes one of the electric contacts or copper electrodes to a bearing position of the support base under the action of the conveyor belt, and when one of the electric contacts or copper electrodes is placed at the bearing position, the upper surface of the bearing at the bearing position is lower than the upper surface of the conveyor belt or is flush with the upper surface of the conveyor belt; The support base is provided with a positioning groove, and the width of the positioning groove matches the width of the electrical contact and the copper electrode; A support column is provided below the bottom of the support base, and a spring is sleeved on the support column. The upper end of the spring is connected to the bottom of the support seat. A limit pressing plate is provided above the support base. The limit pressing plate is pressed at a specified position of the support base to push the support base to move downward, so that the upper surface of the load is lower than the surface of the conveyor belt or flush with the surface of the conveyor belt. It also includes a limiting plate, which is arranged above the bearing position of the support base, and the bottom end of the limiting plate is higher than the limiting pressure plate for matching with the upper surface of the copper electrode or the electric contact.

2. The automatic welding device for high-conductivity contacts and copper electrodes according to claim 1, characterized in that: The positioning groove is provided with a guiding inclined surface in a mirror-symmetrical manner toward one end of the conveyor belt.

3. The automatic welding device for high-conductivity contacts and copper electrodes according to claim 1, characterized in that: It also includes a material storage box, and a guide plate is arranged between the material storage box and the positioning groove. The movement of the conveyor belt drives the electric contacts to push the welded electric contacts to slide along the guide plate into the material storage box.

4. The automatic welding device for high-conductivity contacts and copper electrodes according to claim 1, characterized in that: The support base is provided with a through hole, and the through hole is used to cooperate with the lower electrode of the resistance welding machine.

5. An automatic welding device for a high-conductivity contact and a copper electrode, comprising a first conveying device and a resistance welding machine, characterized in that: The first conveying device includes a conveyor belt and a second conveying device, wherein the second conveying device is used to convey the electric contacts and copper electrodes on the conveyor belt to a predetermined position, and the resistance welding machine welds the electric contacts and copper electrodes at the predetermined position; the second conveying device is a clamping part, and the clamping part and the upper electrode of the resistance welding machine are arranged on a guide rail and move along the guide rail.

6. The automatic welding device for high-conductivity contacts and copper electrodes according to claim 5, characterized in that: Limit baffles are arranged on both sides of the conveyor belt, and openings are arranged at designated positions of the side walls of the support base of the welding machine for carrying copper electrodes or electrical contacts and the baffles for clamping by the clamping part.

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