Fixed spot welding machine capable of improving welding performance

Abstract

A fixed spot welding machine capable of improving welding performance comprises a machine shell, a vertical guide rod is installed on the lower portion of a first installation base of the machine shell in a sliding mode, a first electrode base is fixed to the lower portion of the guide rod, a first electrode cover is fixed to the lower portion of the first electrode base, and a first clamping device is clamped between the first electrode base and the first electrode cover in the axial direction. The first electrode bar is clamped on the right portion of the first clamping device in the radial direction, a second electrode base is fixedly arranged on the upper portion of a second installation base of the machine shell, a second electrode cover is fixed on the upper portion of the second electrode base, and the second clamping device is clamped between the second electrode base and the second electrode cover in the axial direction. The second electrode bar is clamped on the right portion of the second clamping device in the radial direction, and a servo driver is further fixed to the upper portion of the second installation base and used for shortening the distance between the first electrode and the second electrode. According to the utility model, the servo driving controller is adopted, so that the equipment is more flexible and safer to use, and the welding effect is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed spot welding machines, in particular to a fixed spot welding machine capable of improving welding performance. Background Art

[0002] Spot welding machine is a mechanical device that adopts the principle of double-sided double-point overcurrent welding. During operation, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other, an instantaneous thermal weld is formed at the two contact resistance points. The welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop without damaging the internal structure of the workpiece being welded.

[0003] Existing spot welding machines all use cylinders to control the up and down movement of electrode rods. During the working process, pneumatic spot welding machines have low flexibility, their movement stroke is fixed, and the electrode opening is also fixed. When changing the welding product, interference is easy to occur when placing large products due to the opening problem. In addition, pneumatic fixed spot welding machines rely on time and a stable working gas source to trigger welding conditions, and have high requirements for the on-site working environment. When a fault occurs, the electrode clamp will not be tight and the time is up, the welding quality will be affected, and in severe cases, the gun will explode. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a fixed spot welding machine which is more flexible and safer to use, has a stable welding effect and can improve the welding performance to a limited extent.

[0005] The utility model solves its technical problem by adopting a technical solution that is a fixed spot welding machine capable of improving welding performance, comprising a casing, a first mounting seat being provided on the upper portion of the casing, a second mounting seat being provided on the middle portion of the casing, a vertical guide rod being slidably mounted on the lower portion of the first mounting seat, a first electrode seat being fixed to the lower portion of the guide rod, a first electrode cover being fixed to the lower portion of the first electrode seat, a first clamper being clamped axially between the first electrode seat and the first electrode cover, a first electrode rod being clamped radially on the right portion of the first clamper, a second electrode seat being fixed on the upper portion of the second mounting seat, a second electrode cover being fixed to the upper portion of the second electrode seat, a second clamper being clamped axially between the second electrode seat and the second electrode cover, a second electrode rod being clamped radially on the right portion of the second clamper so that the second electrode of the second electrode rod is opposite to the first electrode of the first electrode rod, and a servo driver being further fixed on the upper portion of the second mounting seat, a driving rod of the servo driver being connected and cooperated with the first electrode rod, and the servo driver being used to shorten the distance between the first electrode and the second electrode.

[0006] The advantages of adopting the above technical solution are: changing from traditional pneumatic control to servo control, the servo drive can change the working opening through multiple forms such as communication and pulse. On the one hand, it can effectively improve the working efficiency of the spot welder, and on the other hand, it can effectively avoid the small opening interference problem caused by replacing the welding product. The servo drive can easily reach the set pressure in the torque mode through closed-loop control to ensure the welding quality of the spot welder. It can also achieve the purpose of triggering the welding conditions of the spot welder by setting the pressure by realizing torque control, thereby effectively avoiding the gun explosion phenomenon caused by various common spot welding faults such as electrode misalignment of the welding clamp. Moreover, the servo drive is driven by electric energy and can withstand harsh working environments compared to pneumatic control. Therefore, the use of servo control makes the spot welder more flexible and safer, and the welding effect is stable.

[0007] Furthermore, a first conductive block is integrally formed on the left portion of the first electrode cover, and a first cooling water channel is formed by running through the first conductive block from front to back. A water inlet and a water outlet are respectively installed at both ends of the first cooling water channel.

[0008] The advantages of adopting the above technical solution are: by integrally forming the first conductive block, the first electrode cover can be more conveniently connected to the other end of the soft belt connected to the transformer. Compared with the split structure, the conductive effect of the first electrode cover will also be better. The water inlet and water outlet connected at both ends of the first cooling water channel can be connected to the circulating cooling water pipe. When cooling is required, water can flow through the first cooling water channel through the water inlet to water-cool the first conductive block, thereby taking away the heat on the first conductive block. After cooling, the heat exchange water is discharged from the water outlet, thereby achieving effective heat dissipation and improving the service life of the equipment.

[0009] Furthermore, a second cooling water channel is provided through the first electrode rod along its axial direction, a first joint is sealed and installed on the upper part of the first electrode rod, the upper part of the first joint is connected to the driving rod of the servo driver, and a third cooling water channel is provided axially on the lower part of the first joint, the third cooling water channel cooperates with the second cooling water channel, and the water inlet and the water outlet are provided on the outer wall.

[0010] Advantages of the above technical solution: by providing a first joint with a third cooling water channel, the water inlet and water outlet on the outer wall of the third cooling water channel can be connected to the circulating cooling water pipe, and a corresponding second cooling water channel is also provided on the first electrode rod. When cooling is required, water can flow through the third cooling water channel and the second cooling water channel through the water inlet, and finally cool the first electrode. After cooling is completed, the heat exchanged water is discharged from the water outlet, which has an excellent heat dissipation effect and can effectively increase the service life of the equipment.

[0011] Furthermore, a first arc-shaped groove is formed at the lower portion of the first electrode seat, and a corresponding second arc-shaped groove is formed at the upper portion of the first electrode cover. The first arc-shaped groove and the corresponding second arc-shaped groove can be spliced ​​into a circular groove, and the first clamp is axially clamped in the circular groove.

[0012] Advantages of the above technical solution: the first clamper is clamped by the annular groove formed by the first arc groove and the second arc groove, the clamping structure is reliable, and the contact with the surface of the first clamper is more sufficient, so that large current can be passed.

[0013] Furthermore, a mounting block is integrally formed on the left portion of the second electrode holder, and a reinforcing rib is connected between the right surface of the mounting block and the peripheral wall surface of the first electrode holder.

[0014] The advantages of adopting the above technical solution are: by providing an integrally formed mounting block, it is convenient to install the second electrode holder on the second mounting holder. Compared with the split structure, the overall resistance will not be too large, ensuring the good conductivity of the second electrode holder, and the formation of the reinforced rib plate, the second electrode holder and the second electrode cover have high strength, and the force generated by the spot welder during welding is not easy to cause the second electrode holder and the second electrode cover to be displaced. The second electrode rod and the first electrode rod have higher matching accuracy, are safer to use, and have a reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0017] Figure 3 It is a partial structural sectional view of the utility model;

[0018] Figure 4 This is a schematic diagram of the matching structure of the first electrode holder and the first electrode cover of the present invention;

[0019] Figure 5 This is a schematic structural diagram of the first electrode cover of the present invention;

[0020] Figure 6 This is a schematic diagram of the matching structure of the second electrode holder and the second electrode cover of the present invention;

[0021] Figure 7 This is a schematic structural diagram of the second electrode cover of the present invention;

[0022] Figure 8 This is a schematic structural diagram of the second electrode holder of the present invention.

[0023] In the figure: 1-housing, 2-first mounting seat, 3-second mounting seat, 4-guide rod, 5-first electrode seat, 6-first electrode seat, 7-first clamper, 8-first electrode rod, 9-second electrode seat, 10-second electrode cover, 11-second clamper, 12-second electrode rod, 13-second electrode, 14-first electrode, 15-servo drive, 16-first conductive block, 17-first cooling water channel, 18-water inlet, 19-water outlet, 20-second cooling water channel, 21-first joint, 22-third cooling water channel, 23-first arc groove, 24-second arc groove, 25-mounting block, 26-reinforcement rib plate. DETAILED DESCRIPTION

[0024] To more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, the following describes specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. A person skilled in the art can, without inventive effort, derive other drawings and other embodiments from these drawings. References to orientations only represent relative positional relationships between components, not absolute positional relationships.

[0025] See also Figures 1 to 8As shown, a fixed spot welding machine capable of improving welding performance includes a casing 1, a first mounting seat 2 is provided on the upper part of the casing 1, a second mounting seat 3 is provided in the middle part of the casing 1, a vertical guide rod 4 is slidably installed on the lower part of the first mounting seat 2, a first electrode seat 5 is fixed to the lower part of the guide rod 4, a first electrode cover 6 is fixed to the lower part of the first electrode seat 5, a first clamper 7 is axially clamped between the first electrode seat 5 and the first electrode cover 6, a first electrode rod 8 is radially clamped on the right part of the first clamper 7, a second electrode seat 9 is fixed on the upper part of the second mounting seat 3, a second electrode cover 10 is fixed on the upper part of the second electrode seat 9, a second clamper 11 is axially clamped between the second electrode seat 9 and the second electrode cover 10, a second electrode rod 12 is radially clamped on the right part of the second clamper 11 so that the second electrode 13 of the second electrode rod 12 is opposite to the first electrode 14 of the first electrode rod 8, and a servo driver 15 is also fixed on the upper part of the second mounting seat 3. The driving rod of the driver 15 is connected to the first electrode rod 8, and the servo driver 15 is used to shorten the distance between the first electrode 14 and the second electrode 13. In the above structure, the traditional pneumatic control is changed to servo control. The servo driver 15 can change the working opening in multiple forms such as communication and pulse. On the one hand, it can effectively improve the working efficiency of the spot welder. On the other hand, it can effectively avoid the small opening interference problem caused by replacing the welding product. The servo driver 15 can easily reach the set pressure in the torque mode to ensure the welding quality of the spot welder through closed-loop control. It can also achieve the purpose of triggering the welding conditions of the spot welder by setting the pressure by realizing torque control, thereby effectively avoiding the gun explosion phenomenon caused by various common spot welding faults such as misalignment of the welding clamp electrode. Moreover, the servo driver 15 is driven by electrical energy and can withstand harsh working environments compared to pneumatic control. Therefore, the use of servo control makes the spot welder more flexible and safer, and the welding effect is stable.

[0026] In this embodiment, a first conductive block 16 is integrally formed on the left portion of the first electrode cover 6, and a first cooling water channel 17 is formed through the front and back of the first conductive block 16. A water inlet 18 and a water outlet 19 are respectively installed at both ends of the first cooling water channel 17. By integrally forming the first conductive block 16, the first electrode cover 6 can be more conveniently connected to the other end of the soft belt connected to the transformer. Compared with the split structure, the conductive effect of the first electrode cover 6 will also be better. The water inlet 18 and the water outlet 19 connected at both ends of the first cooling water channel 17 can be connected to the circulating cooling water pipe. When cooling is required, water can flow through the first cooling water channel 17 through the water inlet 18 to water-cool the first conductive block 16, thereby taking away the heat on the first conductive block 16. After cooling, the heat exchange water is discharged from the water outlet 19, thereby achieving effective heat dissipation and improving the service life of the equipment.

[0027] In this embodiment, the first electrode rod 8 is provided with a second cooling water channel 20 along its axial direction, and a first joint 21 is sealed and installed on the upper part of the first electrode rod 8. The upper part of the first joint 21 is connected to the driving rod of the servo driver 15, and the lower part of the first joint 21 is provided with a third cooling water channel 22 along the axial direction. The third cooling water channel 22 cooperates with the second cooling water channel 20, and the outer wall is provided with the above-mentioned water inlet nozzle 18 and water outlet nozzle 19. By providing the first joint 21 with the third cooling water channel 22, the water inlet nozzle 18 and water outlet nozzle 19 on the outer wall of the third cooling water channel 22 The nozzle 19 can be connected to a circulating cooling water pipe. A corresponding second cooling water channel 20 is also provided on the first electrode rod 8. When cooling is required, water can flow through the third cooling water channel 22 and the second cooling water channel 20 through the water inlet nozzle 18, and finally cool the first electrode 14. After cooling, the heat exchanged water is discharged from the water outlet nozzle 19, which has a good heat dissipation effect and can effectively increase the service life of the equipment. It should be noted that the first electrode 14 is sealed with the first electrode rod 8, and the end of the sealed connection of the first electrode 14 can also be set to a concave structure to fully achieve water cooling.

[0028] In this embodiment, a first arc-shaped groove 23 is formed at the lower portion of the first electrode holder 5, and a corresponding second arc-shaped groove 24 is formed at the upper portion of the first electrode cover 6. The first arc-shaped groove 23 and the corresponding second arc-shaped groove 24 can be spliced ​​into a circular groove. The first clamper 7 is clamped axially in the circular groove. The first clamper 7 is clamped by the circular groove formed by the first arc-shaped groove 23 and the second arc-shaped groove 24. The clamping structure is reliable, and the surface contact with the first clamper 7 will be more sufficient, so that large current can be passed.

[0029] In this embodiment, a mounting block 25 is integrally formed on the left portion of the second electrode holder 9, and a reinforcing rib 26 is connected between the right surface of the mounting block 26 and the peripheral wall surface of the first electrode holder 9. By providing the integrally formed mounting block 25, the second electrode holder 9 is conveniently installed on the second mounting holder 3. Compared with the split structure, the overall resistance will not be too large, thereby ensuring the good conductivity of the second electrode holder 9. Moreover, due to the formation of the reinforcing rib 26, the second electrode holder 9 and the second electrode cover 10 have high strength in use, and the force generated by the spot welding machine during welding is not likely to cause the second electrode holder 9 and the second electrode cover 10 to be displaced. The second electrode rod 12 and the first electrode rod 8 have higher matching accuracy, are safer to use, and have a reasonable structural design.

[0030] In this embodiment, the structure of the second electrode cover 10 is basically the same as that of the first electrode cover 6, that is, the first conductive block 16 of the above structure is integrally formed on the left part of the second electrode cover 10. Therefore, the first conductive block 16 on the second electrode cover 10 will also penetrate front and back to form the first cooling water channel 17 of the above structure. At the same time, the water inlet nozzle 18 and the water outlet nozzle 19 of the above structure will be respectively installed at both ends of the first cooling water channel 17. In this way, the water inlet nozzle 18 and the water outlet nozzle 19 connected at both ends of the first cooling water channel 17 on the first conductive block 16 can also be connected to the circulating cooling water pipe. When cooling is required, water can flow through the first cooling water channel 17 on the first conductive block 16 through the water inlet nozzle 18 to water-cool the first conductive block 16, thereby taking away heat. After cooling, the heat exchanged water is discharged from the water outlet nozzle 19 on the first conductive block 16. Therefore, effective heat dissipation is achieved, the use of the second electrode holder 9 and the second electrode cover 10 will be safer, and the service life of the equipment will be effectively improved.

[0031] In this embodiment, the lower part of the second electrode seat 9 is also formed with the first arc groove 23 of the above structure, and the upper part of the second electrode cover 10 is formed with the second arc groove 24 of the above structure. The first arc groove 23 and the second arc groove 24 are also spliced ​​into a circular groove, and the second clamper 11 is clamped in the circular groove along the axial direction.

[0032] In this embodiment, the structure of the second electrode rod 12 is substantially the same as that of the first electrode rod 8. That is, the second electrode rod 12 is also provided with a second cooling water channel 20 of the above-described structure along its axial direction, and a first joint 21 is also provided at one end of the second electrode rod 12. However, in this case, the first joint 21 is sealed to the lower end of the second electrode rod 12, and no connecting structure is formed at the lower portion of the first joint 21. A third cooling water channel 22 is also formed axially above the first joint 21. Furthermore, the outer wall of the third cooling water channel 22 is provided with a water inlet 18 and a water outlet 19 that cooperate with the cooling water channel 22. When cooling is required, water flows through the third cooling water channel 22 and the second cooling water channel 20 through the water inlet 18 on the first joint 21, ultimately cooling the second electrode 13. After cooling is completed, the heat exchanged water is discharged from the water outlet 19 on the first joint 21. The end of the second electrode 13, to which the heat exchanger is connected, is also provided with a concave structure to fully achieve water cooling.

[0033] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A fixed spot welder capable of improving welding performance, characterized in that: The invention comprises a housing (1), wherein a first mounting seat (2) is provided on the upper part of the housing (1), a second mounting seat (3) is provided in the middle part of the housing (1), a vertical guide rod (4) is slidably mounted on the lower part of the first mounting seat (2), a first electrode seat (5) is fixed on the lower part of the guide rod (4), a first electrode cover (6) is fixed on the lower part of the first electrode seat (5), a first clamp (7) is clamped between the first electrode seat (5) and the first electrode cover (6) in the axial direction, a first electrode rod (8) is clamped on the right part of the first clamp (7) in the radial direction, a second electrode seat (9) is fixed on the upper part of the second mounting seat (3), and the second electrode seat (9) is fixed on the upper part of the second mounting seat (3). A second electrode cover (10) is fixed to the upper portion, a second clamper (11) is clamped axially between the second electrode seat (9) and the second electrode cover (10), and a second electrode rod (12) is clamped radially on the right portion of the second clamper (11) so that the second electrode (13) of the second electrode rod (12) is opposite to the first electrode (14) of the first electrode rod (8), and a servo driver (15) is also fixed to the upper portion of the second mounting seat (3), a driving rod of the servo driver (15) is connected and matched with the first electrode rod (8), and the servo driver (15) is used to shorten the distance between the first electrode (14) and the second electrode (13).

2. A fixed spot welder capable of improving welding performance according to claim 1, characterized in that: A first conductive block (16) is integrally formed on the left portion of the first electrode cover (6), and a first cooling water channel (17) is formed by penetrating the first conductive block (16) from front to back, and a water inlet nozzle (18) and a water outlet nozzle (19) are respectively installed at both ends of the first cooling water channel (17).

3. A fixed spot welder capable of improving welding performance according to claim 2, characterized in that: The first electrode rod (8) is provided with a second cooling water channel (20) along its axial direction, and a first joint (21) is sealed and installed on the upper part of the first electrode rod (8). The upper part of the first joint (21) is connected to the driving rod of the servo driver (15), and the lower part of the first joint (21) is provided with a third cooling water channel (22) along the axial direction. The third cooling water channel (22) is matched with the second cooling water channel (20), and the water inlet nozzle (18) and the water outlet nozzle (19) are provided on the outer side wall.

4. The fixed spot welder capable of improving welding performance according to claim 1, characterized in that: A first arcuate groove (23) is formed on the lower portion of the first electrode seat (5), and a corresponding second arcuate groove (24) is formed on the upper portion of the first electrode cover (6). The first arcuate groove (23) and the corresponding second arcuate groove (24) can be spliced ​​into a circular groove, and the first clamper (7) is clamped in the circular groove along the axial direction.

5. The fixed spot welder capable of improving welding performance according to claim 1, characterized in that: A mounting block (25) is integrally formed on the left portion of the second electrode seat (9), and a reinforcing rib plate (26) is connected between the right surface of the mounting block (25) and the peripheral wall surface of the first electrode seat (5).

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