Electrode holder balance mechanism
By designing the balance mechanism of the welding pliers, the automatic compensation of the static electrode is achieved by using the balance cylinder and spring, the problem of inconsistent position between the static electrode and the workpiece during welding is solved, and the stability and working efficiency of welding are improved.
Patent Information
- Application Number
- CN202421029449.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When used, existing pneumatic welding pliers cannot compensate for the wear amount of welding pliers through the robot's own calculations, resulting in inconsistent position of the static electrode and the workpiece during welding, and the inability to weld or poor welding.
A welding clamp balance mechanism is designed to allow the static electrode to automatically compensate for position differences by coordinating the cylinder and spring, and ensure that the static electrode and the workpiece position are relatively consistent.
The absolute consistency between the position of the static electrode and the workpiece during welding is achieved, which avoids the welding failure and the increase in the failure rate, reduces the cost of maintenance and maintenance of butt welding pliers, and improves the welding work efficiency and applicability.
Smart Images
Figure CN222643482U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding technology, in particular to a welding clamp balancing mechanism. Background Art
[0002] Resistance welding refers to a method of using the resistance heat generated by the current passing through the weldment and the contact point as a heat source to locally heat the weldment and pressurize it for welding. No metal filler is required during welding, and the productivity is high, the weldment deformation is small, and it is easy to realize automation. The welding clamp is an essential tool for welding. The welding clamp is divided into two types according to the design structure: X-type and C-type. The X-type welding clamp is mainly used for welding flat surfaces, and the current is arc-shaped. This is because the X-type welding clamp has a longer throat depth and can penetrate a longer welding area. The C-type welding clamp is mainly used for vertical welding. The spot welding position is a vertical or nearly vertical area. The throat width of the C-type welding clamp has requirements on the size of the processed parts.
[0003] In the prior art, pneumatic welding tongs cannot compensate for the wear of the welding tongs through the robot's own calculations like servo robot welding tongs, so a floating mechanism of the welding tongs itself is required to compensate for the wear. To achieve this purpose, the welding tongs move relative to the welding tongs bracket connected to the robot. However, during welding, in order to ensure that the relative position of the electrode and the workpiece is fixed and to meet the welding requirements, a mechanism is needed to ensure that the posture required for welding is relatively fixed. Therefore, in order to solve the above problem, the utility model proposes a welding tongs balancing mechanism. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a welding clamp balancing mechanism, through which the relative position of the welding static electrode and the workpiece will be limited by the balancing mechanism. Before each welding, the static electrode will reach the designed position to ensure the relative consistency of the positions of the static electrode and the workpiece, avoiding the inability to weld or poor welding due to the inconsistency between the positions of the static electrode and the workpiece, and improving the stability required for industrial production.
[0005] The utility model provides the following technical solutions: a welding clamp balancing mechanism comprises a bracket, an insulating pad is fixedly connected to the bottom of the bracket, a balancing cylinder is fixedly installed in the middle of the bracket, an integrated piston rod is movably sleeved in the inner cavity of the balancing cylinder, an air guide hole is provided inside the integrated piston rod, a double-stroke connecting frame is movably sleeved on the upper part of the balancing cylinder, the double-stroke connecting frame is fixedly connected to the bracket, a spring is fixedly installed on both sides of the middle of the double-stroke connecting frame, the number of the springs is two and they are symmetrically distributed up and down, a screw is fixedly installed in the middle of the bracket, the number of the screws is two and they are symmetrically distributed up and down, the screw is located directly to the right of the integrated piston rod, a limiting block is fixedly connected to the screw, and a gas distribution tee is fixedly installed on the right end of the integrated piston rod.
[0006] Preferably, a clamp arm is fixedly mounted on the left portion of the bracket, the clamp arm is located directly to the left of the balancing cylinder, an electrode arm is fixedly mounted on the left end of the clamp arm, and a static electrode cap is fixedly mounted on the bottom end of the electrode arm.
[0007] Preferably, a welding clamp cylinder is fixedly installed in the middle part of the bracket, and the welding clamp cylinder is located directly below the balancing cylinder. A piston is movably sleeved in the inner cavity of the welding clamp cylinder, the right part of the inner cavity of the piston is air chamber one, and the left part of the inner cavity of the piston is air chamber two. Air pipe two is movably sleeved in the middle part of the piston, and a gas separator is fixedly installed on the right end of air pipe two. A pneumatic rod is movably sleeved on the left part of the welding clamp cylinder, a clamp is fixedly installed on the left end of the pneumatic rod, an electrode connecting rod is fixedly installed on the left end of the clamp, a moving electrode cap is fixedly installed on the left end of the electrode connecting rod, and the moving electrode cap is located directly to the right of the static electrode cap.
[0008] Preferably, a transformer is fixedly installed on the upper part of the bracket, and the transformer is located directly above the balancing cylinder. A junction box is fixedly installed on the right part of the transformer, and a long conductive plate is fixedly installed on the left part of the transformer. A conductive plate guard groove is fixedly installed on the bottom of the long conductive plate. There are two conductive plate guard grooves and they are symmetrically distributed up and down, and a conductive belt is fixedly installed between the two conductive plate guard grooves.
[0009] Preferably, a clamp is fixedly installed at the bottom of the conductive plate guard groove, a guide rod is fixedly connected to the middle of the clamp, two guide rods are symmetrically distributed up and down, the right end of the guide rod is movably sleeved on the welding clamp cylinder, a sliding rod is fixedly installed in the middle of the welding clamp cylinder, two slide rods are symmetrically distributed up and down, and the right part of the slide rod is fixedly installed on the limit block.
[0010] Preferably, a solenoid valve fixing block is fixedly installed on the front side of the bracket, a solenoid valve fixing transition block is fixedly installed on the front side of the solenoid valve fixing block, mounting holes are respectively provided on the solenoid valve fixing block and the solenoid valve fixing transition block, a solenoid valve is fixedly installed on the front side of the solenoid valve fixing transition block through the mounting hole, and a water distribution block is fixedly installed on the rear side of the bracket.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. When using the welding device, the air intake of the welding clamp cylinder pushes the piston, so that the moving electrode cap moves to the left and supports the plate. At the same time, the gas in the balance cylinder is discharged to unload the balance cylinder. Under the action of the elastic potential energy of the spring, the static electrode cap moves toward the workpiece to a position close to the workpiece for welding, so that the relative position between the welding clamp electrode and the welded plate can be absolutely consistent. Compared with traditional welding clamps, it avoids the inability to weld or poor welding during the welding process, improves the stability required for industrial production, and improves the welding work efficiency.
[0013] 2. Through the two cylinder systems of the static electrode and the moving electrode in the device, the welding clamp has self-balancing, which solves the problem of the static electrode and the welding workpiece being in the same position. At the same time, due to the setting of the spring, the static electrode of the welding clamp has an automatic compensation function, which ultimately greatly reduces the failure rate of the welding clamp and reduces the manpower cost of the maintenance of the welding clamp, which has good economic benefits. In this way, the welding clamp can be used in more occasions, which improves the applicability of the welding clamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the exterior structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the balance spring of the utility model;
[0017] Figure 4 This is a schematic diagram of the installation structure of the solenoid valve of the utility model.
[0018] In the figure: 1. bracket; 2. insulating pad; 3. balancing cylinder; 41. integrated piston rod; 42. double-stroke connecting frame; 5. air guide hole; 6. spring one; 7. screw one; 8. limit block; 9. gas distribution tee; 10. clamp arm; 11. electrode arm; 12. static electrode cap; 13. welding clamp cylinder; 14. piston; 15. air pipe two; 16. gas distributor; 17. pneumatic rod; 18. clamp; 19. electrode connecting rod; 20. moving electrode cap; 21. transformer; 22. junction box; 23. long conductive plate; 24. conductive belt protection groove; 25. conductive belt; 26. air chamber one; 27. guide rod; 28. air chamber two; 29. slide rod; 30. solenoid valve fixing block; 31. solenoid valve fixing transition block; 32. mounting hole; 33. solenoid valve; 34. water distribution block. DETAILED DESCRIPTION
[0019] 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.
[0020] See also Figure 1-Figure 4A welding clamp balancing mechanism comprises a bracket 1, an insulating pad 2 is fixedly connected to the bottom of the bracket 1, a balancing cylinder 3 is fixedly installed in the middle of the bracket 1, an integrated piston rod 41 is movably sleeved in the inner cavity of the balancing cylinder 3, and an air guide hole 5 is arranged inside the integrated piston rod 41, a double-stroke connecting frame 42 is movably sleeved on the upper part of the balancing cylinder 3, the double-stroke connecting frame 42 is fixedly connected to the bracket 1, and springs 6 are fixedly installed on both sides of the middle of the double-stroke connecting frame 42, the number of springs is two and they are symmetrically distributed up and down, a screw 7 is fixedly installed in the middle of the bracket 1, the number of screws is two and they are symmetrically distributed up and down, the screw 7 is located on the right side of the integrated piston rod 41, a limiting block 8 is fixedly connected to the screw 7, an air dividing tee 9 is fixedly installed on the right end of the integrated piston rod 41, a clamp arm 10 is fixedly installed on the left part of the bracket 1, the clamp arm 10 is located on the left side of the balancing cylinder 3, an electrode arm 11 is fixedly installed on the left end of the clamp arm 10, and a static electrode cap 12 is fixedly installed on the bottom end of the electrode arm 11. When the welding clamp is in an open state, the balance The inner cavity of the cylinder 3 is in a long air intake state through the air guide hole 5, pushing the balancing cylinder 3 to move to the left, and the spring 6 is stretched to generate elastic potential energy. The position of the limit block 8 on the screw 7 is adjusted to adjust the elastic force of the spring 6. The balancing cylinder 3 pushes the clamp arm 10, the clamp arm 10 drives the electrode arm 11, and the electrode arm 11 drives the static electrode cap 12 to move to the left, so that the relative position between the welding clamp electrode and the welded plate can be absolutely consistent. During welding, under the control of the solenoid valve 33, the balancing cylinder 3 is in an exhaust state, and the elastic potential energy in the spring 6 is released. The elastic force pushes the balancing cylinder 3 to slide to the right, and the balancing cylinder 3 drives the clamp arm 10, the clamp arm 10 drives the electrode arm 11, and the electrode arm 11 drives the static electrode cap 12 to move to the right, so that the floating and compensation of the whole gun and the static arm electrode can be realized. Compared with the traditional welding clamp, it avoids the inability to weld or poor welding during the welding process, so that the stability required for industrial production is improved, and the welding work efficiency is improved;
[0021] A welding clamp cylinder 13 is fixedly installed in the middle of the bracket 1. The welding clamp cylinder 13 is located directly below the balancing cylinder 3. A piston 14 is movably sleeved in the inner cavity of the welding clamp cylinder 13. The right part of the inner cavity of the piston 14 is an air chamber 1 26, and the left part of the inner cavity of the piston 14 is an air chamber 2 28. An air pipe 2 15 is movably sleeved in the middle of the piston 14, and a gas distributor 16 is fixedly installed on the right end of the air pipe 2 15. A pneumatic rod 17 is movably sleeved on the left part of the welding clamp cylinder 13, and a clamp 18 is fixedly installed on the left end of the pneumatic rod 17. An electrode connecting rod 19 is fixedly installed on the left end of the clamp 18. The left end of the electrode connecting rod 19 is fixed A moving electrode cap 20 is installed, and the moving electrode cap 20 is located just to the right of the static electrode cap 12. A transformer 21 is fixedly installed on the upper part of the bracket 1, and the transformer 21 is located just above the balancing cylinder 3. A junction box 22 is fixedly installed on the right part of the transformer 21. A long conductive plate 23 is fixedly installed on the left part of the transformer 21. A conductive plate protection groove 24 is fixedly installed at the bottom of the long conductive plate 23. There are two conductive plate protection grooves 24 and they are symmetrically distributed up and down. A conductive belt 25 is fixedly installed between the two conductive plate protection grooves 24. A clamp 18 is fixedly installed at the bottom of the conductive plate protection groove 24. The clamp 1 8 is fixedly connected with a guide rod 27 in the middle, the number of guide rods 27 is two and they are symmetrically distributed up and down, the right end of the guide rod 27 is movably sleeved on the welding clamp cylinder 13, the middle of the welding clamp cylinder 13 is fixedly installed with a slide rod 29, the number of slide rods 29 is two and they are symmetrically distributed up and down, the right part of the slide rod 29 is fixedly installed on the limit block 8, the front side of the bracket 1 is fixedly installed with a solenoid valve fixing block 30, the front side of the solenoid valve fixing block 30 is fixedly installed with a solenoid valve fixing transition block 31, the solenoid valve fixing block 30 and the solenoid valve fixing transition block 31 are respectively provided with mounting holes 32, and the solenoid valve fixing block 30 and the solenoid valve fixing transition block 31 are respectively provided with mounting holes 32. An electromagnetic valve 33 is fixedly installed on the front side of the fixed transition block 31 through the mounting hole 32, and a water distribution block 34 is fixedly installed on the rear side of the bracket 1. Under the control of the electromagnetic valve 33, the gas distribution tee 9 is opened, and gas is filled into the gas chamber 1 in the welding clamp cylinder 13 from the gas pipe 2 15, and the piston 2 14 is pushed. The piston 2 14 pushes the pneumatic rod 17, the pneumatic rod 17 pushes the clamp 18, the clamp 18 pushes the electrode connecting rod 19, and the electrode connecting rod 19 pushes the moving electrode cap 20 to move to the left. At the same time, due to the action of the spring, the static electrode cap 12 and the moving electrode cap 20 move toward each other to contact the workpiece for welding.
[0022] Working principle: When the welding clamp is in the open state, the inner cavity of the balancing cylinder 3 is in a long air intake state through the air guide hole 5, pushing the balancing cylinder 3 to move to the left, and the spring 6 is stretched to generate elastic potential energy. The elastic force of the spring 6 is adjusted by adjusting the position of the limit block 8 on the screw 7. The balancing cylinder 3 pushes the clamp arm 10, the clamp arm 10 drives the electrode arm 11, and the electrode arm 11 drives the static electrode cap 12 to move to the left, so that the relative position between the welding clamp electrode and the welded plate can be absolutely consistent. During welding, under the control of the solenoid valve 33, the balancing cylinder 3 is in the exhaust state, and the elastic potential energy in the spring 6 is released. The elastic force pushes the balancing cylinder 3 to slide to the right, and the balancing cylinder 3 drives the clamp arm 10, the clamp arm 10 drives the electrode arm 11, and the electrode arm 11 drives the static electrode cap 12 to move to the right, so that the whole gun can be realized. The floating and compensation of the static arm electrode, at the same time, the gas dividing tee 9 is opened under the control of the solenoid valve 33, and the gas is filled into the air chamber 26 in the inner cavity of the welding clamp cylinder 13 from the air pipe 2 15, and the piston 2 14 is pushed, the piston 2 14 pushes the pneumatic rod 17, the pneumatic rod 17 pushes the clamp 18, the clamp 18 pushes the electrode connecting rod 19, and the electrode connecting rod 19 pushes the moving electrode cap 20 to move to the left. At this time, the static electrode cap 12 and the moving electrode cap 20 move toward each other and contact the workpiece for welding. After the welding is completed, the static electrode cap 12 returns to its original position, and the internal gas of the air chamber 26 in the inner cavity of the welding clamp cylinder 13 is discharged through the solenoid valve 33, and the gas source switches the gas path through the solenoid valve 33 to enter the air chamber 2 28, so that the clamp 18 moves to the right, and the clamp 18 drives the guide rod 27 and the conductive belt 25 to move to the right, so that the moving electrode cap 20 returns to its original position.
Claims
1. A welding clamp balancing mechanism, comprising a bracket (1), characterized in that: An insulating pad (2) is fixedly connected to the bottom of the bracket (1); a balancing cylinder (3) is fixedly installed in the middle of the bracket (1); an integrated piston rod (41) is movably sleeved in the inner cavity of the balancing cylinder (3); an air guide hole (5) is provided inside the integrated piston rod (41); a double-stroke connecting frame (42) is movably sleeved on the upper part of the balancing cylinder (3); the double-stroke connecting frame (42) is fixedly connected to the bracket (1); springs (6) are fixedly installed on both sides of the middle of the double-stroke connecting frame (42); the number of the springs is two and they are symmetrically distributed up and down; a screw rod (7) is fixedly installed in the middle of the bracket (1); the number of the screw rods is two and they are symmetrically distributed up and down; the screw rod (7) is located directly to the right of the integrated piston rod (41); a limiting block (8) is fixedly connected to the screw rod (7); and a gas distribution tee (9) is fixedly installed at the right end of the integrated piston rod (41).
2. A welding clamp balancing mechanism according to claim 1, characterized in that: A clamp arm (10) is fixedly mounted on the left side of the bracket (1), and the clamp arm (10) is located directly to the left of the balancing cylinder (3). An electrode arm (11) is fixedly mounted on the left end of the clamp arm (10), and a static electrode cap (12) is fixedly mounted on the bottom end of the electrode arm (11).
3. A welding clamp balancing mechanism according to claim 2, characterized in that: A welding clamp cylinder (13) is fixedly mounted in the middle of the bracket (1), and the welding clamp cylinder (13) is located directly below the balancing cylinder (3). A piston (14) is movably sleeved in the inner cavity of the welding clamp cylinder (13), and the right part of the inner cavity of the piston (14) is an air chamber 1 (26), and the left part of the inner cavity of the piston (14) is an air chamber 2 (28). A second air pipe (15) is movably sleeved in the middle of the piston (14), and a gas distributor (16) is fixedly mounted on the right end of the second air pipe (15). A pneumatic rod (17) is movably sleeved in the left part of the welding clamp cylinder (13), and a clamp (18) is fixedly mounted on the left end of the pneumatic rod (17). An electrode connecting rod (19) is fixedly mounted on the left end of the clamp (18), and a moving electrode cap (20) is fixedly mounted on the left end of the electrode connecting rod (19). The moving electrode cap (20) is located directly to the right of the static electrode cap (12).
4. A welding clamp balancing mechanism according to claim 1, characterized in that: A transformer (21) is fixedly mounted on the upper part of the bracket (1), and the transformer (21) is located directly above the balancing cylinder (3). A junction box (22) is fixedly mounted on the right part of the transformer (21), and a long conductive plate (23) is fixedly mounted on the left part of the transformer (21). A conductive plate protection groove (24) is fixedly mounted on the bottom of the long conductive plate (23). The number of the conductive plate protection grooves (24) is two and they are symmetrically distributed up and down, and a conductive belt (25) is fixedly mounted between the two conductive plate protection grooves (24).
5. A welding clamp balancing mechanism according to claim 4, characterized in that: A clamp (18) is fixedly installed at the bottom of the conductive plate protection groove (24), and a guide rod (27) is fixedly connected to the middle of the clamp (18). The number of the guide rods (27) is two and they are symmetrically distributed up and down. The right end of the guide rod (27) is movably sleeved on the welding clamp cylinder (13). A slide rod (29) is fixedly installed in the middle of the welding clamp cylinder (13). The number of the slide rods (29) is two and they are symmetrically distributed up and down. The right part of the slide rod (29) is fixedly installed on the limit block (8).
6. A welding clamp balancing mechanism according to claim 1, characterized in that: A solenoid valve fixing block (30) is fixedly mounted on the front side of the bracket (1), a solenoid valve fixing transition block (31) is fixedly mounted on the front side of the solenoid valve fixing block (30), mounting holes (32) are respectively provided on the solenoid valve fixing block (30) and the solenoid valve fixing transition block (31), a solenoid valve (33) is fixedly mounted on the front side of the solenoid valve fixing transition block (31) through the mounting hole (32), and a water distribution block (34) is fixedly mounted on the rear side of the bracket (1).