A plasma arc welder for harness terminal processing

Abstract

The application relates to the technical field of welding machines, and discloses a plasma arc welding machine for wire harness terminal processing, which comprises a welding gun and a positioning plate, the material of the positioning plate is iron; an anti-advance gun lifting assembly is matched with the positioning plate and used for preventing the welding gun from being lifted in advance; the anti-advance gun lifting assembly comprises a support connected to the outer side of the welding gun and a sliding rod fixedly installed in the inner side of the support. The welding gun position can be locked after the switch is released when the welding is completed, so that the welding gun cannot move after the welding is completed, the situation that the protective gas cannot normally protect the molten pool due to the direct lifting of the welding gun caused by the misoperation of the staff is avoided, the water droplets on the surface of the positioning plate can be avoided through the setting of the electric heating plate, the situation that the stability of the positioning plate adsorbed and fixed by the first electromagnet through the rotating wheel is affected by the water droplets is avoided, and the stability of the welding gun position locking is ensured.

Description

Technical Field

[0001] This invention belongs to the field of welding machine technology, and specifically relates to a plasma arc welding machine for processing wire harness terminals. Background Technology

[0002] Plasma arc welding (PAW) machines are precision welding equipment that uses a high-energy plasma arc as a heat source. Due to their concentrated arc energy, fast welding speed, and high weld quality, they are widely used in high-end manufacturing fields.

[0003] When processing large wire harness terminals, a plasma arc welding machine is required to weld the terminals to the wire harness and fix them together. According to the specifications, when the switch is released after welding, the welding torch will spray a protective gas to protect the molten pool at the weld. The welding torch needs to remain at the end of the welding process, keeping it directly above the molten pool to ensure that the gas flow is concentrated on the molten pool area. However, due to employee misoperation, the welding torch may be removed directly, resulting in poor protection of the molten pool by the protective gas, which in turn affects the welding quality.

[0004] Therefore, it is necessary to invent a plasma arc welding machine for processing wire harness terminals to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a plasma arc welding machine for processing wire harness terminals, thereby solving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plasma arc welding machine for processing wire harness terminals, comprising a welding torch and a positioning plate, wherein the positioning plate is made of iron;

[0007] An anti-premature torch lifting assembly, which works in conjunction with the positioning plate, is used to prevent the welding torch from being lifted prematurely.

[0008] The anti-premature firing component includes:

[0009] A bracket is attached to the outside of the welding torch;

[0010] The sliding rods are symmetrically and fixedly installed inside the bracket;

[0011] The first spring is sleeved on the outside of the slide rod;

[0012] The slider is slidably sleeved on the outside of the slider rod;

[0013] A rotating wheel is rotatably mounted on the slider;

[0014] A fixing component for fixing the rotating wheel to the positioning plate;

[0015] A locking component is used to lock the bracket in place, preventing it from moving.

[0016] Furthermore, the fixing component includes:

[0017] A first electromagnet, which is ring-shaped, is installed inside the rotating wheel;

[0018] A storage battery is located at one end of the rotating wheel to supply power to the first electromagnet.

[0019] The controller, located inside the welding torch, can remotely control the first electromagnet to be energized and de-energized.

[0020] Furthermore, the locking component includes:

[0021] A frame is attached to the outside of the slider;

[0022] The iron block is slidably disposed inside the frame;

[0023] The second electromagnet is connected to the outside of the bracket and can attract and fix the iron block when energized.

[0024] An anti-deflection component is used to prevent deflection between the slider and the rotary wheel;

[0025] A reset assembly for resetting the iron block.

[0026] Furthermore, the anti-deflection component includes:

[0027] The connecting plate is slidably disposed on the outside of the slider;

[0028] A second spring is connected to the connecting plate and is used to drive the connecting plate to reset.

[0029] A clamping plate is attached to the bottom of the connecting plate;

[0030] A rubber pad is provided at the bottom of the clamping plate;

[0031] A pushing component is used to push the connecting plate downward.

[0032] Furthermore, the actuating component includes:

[0033] A pressure plate is attached to the outside of the iron block;

[0034] A drive block is connected to the outside of the connecting plate;

[0035] An inclined surface is provided at the bottom of the pressure plate and at the top of the drive block, with the two inclined surfaces in contact.

[0036] Furthermore, the reset component includes:

[0037] A push plate is attached to the top of the iron block;

[0038] A third spring connects the push plate to the frame on the side closest to the second electromagnet.

[0039] Furthermore, a heating plate is provided at the bottom of the positioning plate.

[0040] Furthermore, the rotating wheel is made of ceramic, and when the first electromagnet is energized, it can be attracted and fixed to the positioning plate through the rotating wheel.

[0041] The technical effects and advantages of this invention are as follows:

[0042] 1. This invention can lock the position of the welding torch after the switch is released when welding is completed, so that it cannot move after welding is completed, thereby avoiding the situation where the employee misoperates and lifts the torch directly after welding, causing the shielding gas to fail to protect the molten pool properly.

[0043] 2. The present invention, through the setting of the heating plate, can avoid the presence of water droplets on the surface of the positioning plate, thereby avoiding the situation where water droplets affect the stability of the first electromagnet adsorbing and fixing the positioning plate through the rotating wheel, and ensuring the stability of the welding gun position locking. Attached Figure Description

[0044] Figure 1 A schematic diagram of the structure of a plasma arc welding machine for processing wire harness terminals according to an embodiment of the present invention is shown. Figure 1 ;

[0045] Figure 2 An embodiment of the present invention is shown. Figure 1 Enlarged structural diagram at point A in the middle;

[0046] Figure 3 A cross-sectional view of a plasma arc welding machine for processing wire harness terminals according to an embodiment of the present invention is shown.

[0047] Figure 4 A schematic diagram of the structure of a plasma arc welding machine for processing wire harness terminals according to an embodiment of the present invention is shown. Figure 2 ;

[0048] Figure 5 An embodiment of the present invention is shown. Figure 4 Enlarged structural diagram at point B;

[0049] In the diagram: 1. Welding torch; 2. Positioning plate; 3. Bracket; 4. Slide bar; 5. First spring; 6. Slider; 7. Rotary wheel; 8. First electromagnet; 9. Battery; 10. Frame; 11. Iron block; 12. Push plate; 13. Third spring; 14. Second electromagnet; 15. Pressure plate; 16. Clamping plate; 17. Connecting plate; 18. Second spring; 19. Drive block; 20. Inclined surface; 21. Heating plate. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0051] This invention provides a plasma arc welding machine for processing wire harness terminals, such as... Figures 1 to 5 As shown, it includes a welding torch 1, a positioning plate 2, and an anti-premature torch lifting assembly;

[0052] The welding torch 1 is the welding torch on the plasma arc welding machine in the prior art. The welding torch 1 is connected to a welding machine (not shown in the figure) that cooperates with it. The positioning plate 2 is made of iron. The positioning plate 2 is symmetrically provided with screw holes. The positioning plate 2 can be fixed on the work station by the cooperation of the screw holes and screws. The anti-early lifting torch assembly cooperates with the positioning plate 2 to prevent the welding torch 1 from being lifted prematurely.

[0053] The anti-premature gun-raising assembly includes: bracket 3, slide bar 4, first spring 5, slider 6, rotating wheel 7, fixing assembly, and locking assembly;

[0054] The bracket 3 is fixedly connected to the outside of the welding torch 1. The slide rod 4 is symmetrically fixedly installed inside the bracket 3. The first spring 5 is sleeved on the outside of the slide rod 4. The slider 6 is slidably sleeved on the outside of the slide rod 4. The first spring 5 is located above the slider 6. The rotating wheel 7 is rotatably installed on the slider 6. The fixing component is used to fix the rotating wheel 7 and the positioning plate 2. The locking component is used to lock the bracket 3 so that it cannot move.

[0055] In use, fix the positioning plate 2 to the workstation with screws, hold the welding gun 1 and move it along with the bracket 3, slide bar 4, slider 6 and rotating wheel 7. Place the rotating wheel 7 on the positioning plate 2 and place the wire harness terminal and wire harness on the workstation. At this time, hold the welding gun 1 and press the switch on the welding gun 1 to weld the wire harness terminal and wire harness. As the welding proceeds, the rotating wheel 7 moves along the surface of the positioning plate 2. When the welding is completed, release the switch. The fixing component fixes the rotating wheel 7 to the positioning plate 2. Then the locking component locks the bracket 3 so that it cannot move. At this time, the welding gun 1 cannot move and is fixed.

[0056] After welding is completed and the switch is released, the welding torch 1 will spray protective gas to protect the molten pool at the weld. The welding torch 1 needs to remain at the end of the welding process, keeping the torch directly above the molten pool to ensure that the gas flow is concentrated on the molten pool area. This is a standard requirement for welding. However, it is easy for employees to misoperate and lift the torch immediately after welding. If the torch 1 is lifted and moved away immediately after welding, the distance between the nozzle of the welding torch 1 and the molten pool will increase, and the protective gas will diffuse and fail to effectively cover the molten pool, resulting in protection failure. By locking the welding torch 1 as described above, it cannot move after welding is completed, thereby avoiding misoperation and ensuring that the protective gas can properly protect the molten pool. After the protective gas is sprayed, the fixing component releases the fixation between the rotating wheel 7 and the positioning plate 2, and the locking component releases the lock on the bracket 3. At this time, the welding torch 1 can be removed.

[0057] like Figures 2 to 3 As shown, the fixed components include: a first electromagnet 8, a storage battery 9, and a controller;

[0058] The first electromagnet 8 is ring-shaped and is fixedly installed inside the rotating wheel 7. The battery 9 is fixedly installed at one end of the rotating wheel 7 to power the first electromagnet 8. The controller (not shown in the figure) is a PLC controller, which is installed inside the welding torch 1 and can remotely control the first electromagnet 8 to be energized and de-energized. The welding torch 1 is equipped with an arc status monitoring module, which can automatically identify the arc extinguishing after the switch is released. The controller is connected to the arc status monitoring module in the welding torch 1 and can receive a signal after the switch of the welding torch 1 is released, thereby controlling the first electromagnet 8 to be energized and magnetic. The welding torch 1 is equipped with a digital control module, which can be used to control the spraying time of the protective gas. When the required time is reached, the spraying of the protective gas will automatically stop. The arc status monitoring module and the digital control module are the arc status monitoring module and digital control module on the plasma arc welding machine in the prior art. The specific monitoring and control principle is the prior art and will not be described in detail here. The controller is connected to the digital control module.

[0059] When the switch is released, the controller energizes the first electromagnet 8 to make it magnetic, so that it can be attracted and fixed to the positioning plate 2 through the rotating wheel 7. When the digital control module stops spraying protective gas, the controller de-energizes the first electromagnet 8 to make it lose its magnetism, thereby canceling the fixation between it and the positioning plate 2.

[0060] like Figures 2 to 5 As shown, the locking assembly includes: frame 10, iron block 11, second electromagnet 14, anti-deflection assembly, and reset assembly;

[0061] The frame 10 is fixedly connected to the outside of the slider 6, the iron block 11 is slidably set inside the frame 10, the second electromagnet 14 is fixedly connected to the outside of the bracket 3, and can attract and fix the iron block 11 when energized. The anti-deflection component is used to prevent deflection between the slider 6 and the rotating wheel 7. The reset component is used to reset the iron block 11.

[0062] The controller can control the energization and de-energization of the second electromagnet 14. When the switch is depressed, the controller controls the second electromagnet 14 to be energized, making it magnetic, thereby attracting the iron block 11 to move towards the second electromagnet 14, so that it is attracted and fixed to the second electromagnet 14. At the same time, the anti-deflection component can prevent the slider 6 and the rotating wheel 7 from deflecting. At this time, since the rotating wheel 7 is fixed by the energized first electromagnet 8 in conjunction with the positioning plate 2, the welding torch 1, the bracket 3, and the slider 6 cannot move in the horizontal direction. The anti-deflection component prevents the slider 6 from deflecting at this time, so the bracket 3 and the welding torch 1 cannot deflect. In the vertical direction, since the rotating wheel 7 is fixed at this time, the rotating wheel 7, the slider 6, the frame 10, and the iron block 11 cannot move in the vertical direction. Therefore, the welding torch 1, the bracket 3, and the second electromagnet 14 cannot move in the vertical direction. Finally, the bracket 3 is locked, and the welding torch 1 cannot move, thus achieving a fixed position.

[0063] like Figure 2 and Figure 5 As shown, the anti-deflection assembly includes: a clamping plate 16, a connecting plate 17, a second spring 18, a rubber pad, and a pushing assembly;

[0064] The connecting plate 17 is slidably disposed on the outside of the slider 6. Specifically, a vertical groove is provided on the outside of the slider 6. One end of the connecting plate 17 is slidably disposed in the vertical groove. The second spring 18 is fixedly connected to the connecting plate 17 and is used to drive the connecting plate 17 to reset. Specifically, the second spring 18 fixes the connecting plate 17 to the bottom wall of the vertical groove. The clamping plate 16 is fixedly connected to the bottom of the connecting plate 17. A rubber pad is disposed at the bottom of the clamping plate 16. The pushing assembly is used to push the connecting plate 17 to move downward.

[0065] When the iron block 11 moves toward the second electromagnet 14, it works with the pushing assembly to push the connecting plate 17 downward, thereby moving the clamping plate 16 and the rubber pad along with it. Eventually, the rubber pad comes into contact with the surface of the rotating wheel 7. When the connecting plate 17 descends, it compresses the second spring 18, causing it to deform and generate force. Due to the friction between the rubber pad and the rotating wheel 7, the slider 6 cannot deflect, so the bracket 3 and the welding torch 1 cannot deflect.

[0066] like Figure 2 and Figure 5 As shown, the pushing component includes: pressure plate 15, driving block 19, and inclined surface 20;

[0067] The pressure plate 15 is fixedly connected to the outside of the iron block 11, the drive block 19 is fixedly connected to the outside of the connecting plate 17, the inclined surface 20 is set at the bottom of the pressure plate 15 and the top of the drive block 19, the two inclined surfaces 20 are in contact, and the top of the drive block 19 is also provided with a plane connected to the inclined surface 20.

[0068] When the iron block 11 moves toward the second electromagnet 14, it will bring the pressure plate 15 with it. The pressure plate 15, together with the inclined plane 20, squeezes the drive block 19 to make it descend, thereby bringing the connecting plate 17 down. When the connecting plate 17 can no longer descend, the pressure plate 15 slides along the plane, and finally the iron block 11 is attracted and fixed to the second electromagnet 14.

[0069] like Figure 5 As shown, the reset assembly includes: a push plate 12 and a third spring 13;

[0070] The push plate 12 is fixedly connected to the top of the iron block 11, and the third spring 13 fixes the push plate 12 to the frame 10 on the side near the second electromagnet 14.

[0071] When the iron block 11 moves toward the second electromagnet 14, it carries the push plate 12 and causes it to move accordingly, compressing the third spring 13 and causing it to deform. When the second electromagnet 14 is de-energized, the third spring 13 resets, bringing the push plate 12 and the iron block 11 back to their original positions.

[0072] like Figure 3 As shown, a heating plate 21 is provided at the bottom of the positioning plate 2.

[0073] If the processing environment is humid, tiny water droplets are easily attached to the surface of the positioning plate 2. The presence of water droplets will affect the stability of the first electromagnet 8 adsorbing and fixing the positioning plate 2 through the rotating wheel 7.

[0074] Therefore, by activating the heating plate 21 to heat the positioning plate 2, water droplets on the surface of the positioning plate 2 can be avoided, thus preventing water droplets from affecting the stability of the first electromagnet 8 adsorbing and fixing the positioning plate 2 through the rotating wheel 7.

[0075] like Figure 3 As shown, the rotating wheel 7 is made of ceramic, and the first electromagnet 8 can be attracted and fixed to the positioning plate 2 through the rotating wheel 7 when it is energized.

[0076] The magnetic force generated by the first electromagnet 8 will not interfere with the movement of the iron block 11.

[0077] Working principle: In use, the positioning plate 2 is fixed to the workstation with screws. Holding the welding gun 1, it moves the bracket 3, slide bar 4, slider 6, and rotating wheel 7. The rotating wheel 7 is placed on the positioning plate 2, and the wire harness terminals and wire harness are placed on the workstation. Holding the welding gun 1, the switch on the welding gun 1 is pressed to weld the wire harness terminals and wire harness. As welding progresses, the rotating wheel 7 moves along the surface of the positioning plate 2. After welding is completed, the switch is released. Upon releasing the switch, the controller energizes the first electromagnet 8, making it magnetic, thus attracting and fixing it to the positioning plate 2 through the rotating wheel 7. Simultaneously, the controller energizes the second electromagnet 14, making it magnetic, thus attracting the iron block 11 towards the second electromagnet 14, causing it to attract and fix itself to the second electromagnet 14. As the iron block 11 moves towards the second electromagnet 14, it moves the push plate 12, compressing and deforming the third spring 13. When the second electromagnet 14 moves in the direction of the second electromagnet 14, it will move the pressure plate 15 along with it. The pressure plate 15, together with the inclined plane 20, will squeeze the drive block 19 to make it descend, thereby bringing the connecting plate 17 down, and then bringing the clamping plate 16 and the rubber pad along with it. Finally, the rubber pad will come into contact with the surface of the rotating wheel 7. When the connecting plate 17 descends, it will compress the second spring 18 to deform and generate force. Due to the friction between the rubber pad and the rotating wheel 7, the slider 6 cannot deflect. Therefore, the bracket 3 and the welding gun 1 cannot deflect. At this time, since the rotating wheel 7 is fixed by the energized first electromagnet 8 and the positioning plate 2, the welding gun 1, the bracket 3, and the slider 6 cannot move in the horizontal direction. In the vertical direction, since the rotating wheel 7 is fixed at this time, the rotating wheel 7, the slider 6, the frame 10, and the iron block 11 cannot move in the vertical direction. Therefore, the welding gun 1, the bracket 3, and the second electromagnet 14 cannot move in the vertical direction. Finally, the bracket 3 is locked, and the welding gun 1 cannot move and its position is fixed.

[0078] After welding is completed, when the switch is released, the welding torch 1 will spray protective gas to protect the molten pool at the weld. The welding torch 1 needs to stay at the end of the welding process and keep the welding torch directly above the molten pool to ensure that the gas flow is concentrated on the molten pool area. This is a standard requirement for welding. However, it is easy for employees to misoperate and lift the torch directly after welding. If the welding torch 1 is lifted and moved away immediately after welding, the distance between the nozzle of the welding torch 1 and the molten pool will increase. The protective gas will diffuse and cannot effectively cover the molten pool, resulting in protection failure. By locking the welding torch 1 as described above, it cannot move after welding is completed, thereby avoiding misoperation and ensuring that the protective gas can protect the molten pool normally. After the protective gas is sprayed, the controller controls the first electromagnet 8 to de-energize it and lose its magnetism, thus canceling the adsorption and fixation of the positioning plate 2. At the same time, the controller controls the second electromagnet 14 to de-energize it and make it magnetic. At this time, the third spring 13 resets, which in turn resets the push plate 12 and the iron block 11. The second spring 18 resets, which in turn resets the connecting plate 17 and the clamping plate 16.

[0079] If the processing environment is humid, tiny water droplets are easily attached to the surface of the positioning plate 2. The presence of water droplets will affect the stability of the first electromagnet 8 adsorbing and fixing the positioning plate 2 through the rotating wheel 7.

[0080] Therefore, by activating the heating plate 21 to heat the positioning plate 2, water droplets on the surface of the positioning plate 2 can be avoided, thus preventing water droplets from affecting the stability of the first electromagnet 8 adsorbing and fixing the positioning plate 2 through the rotating wheel 7.

[0081] The positioning plate 2 can be removed to facilitate the transfer of the welding gun 1 and the positioning plate 2, making it convenient for use elsewhere.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A plasma arc welding machine for processing wire harness terminals, comprising a welding torch (1), characterized in that: Positioning plate (2), the material of which is iron; The anti-early lifting gun assembly, in conjunction with the positioning plate (2), is used to prevent the welding gun (1) from being lifted prematurely. The anti-premature firing component includes: The bracket (3) is connected to the outside of the welding torch (1); The slide bar (4) is symmetrically fixed inside the bracket (3); The first spring (5) is sleeved on the outside of the slide rod (4); The slider (6) is slidably sleeved outside the slider (4); A rotating wheel (7) is rotatably mounted on the slider (6); A fixing component is used to fix the rotating wheel (7) to the positioning plate (2); A locking component is used to lock the bracket (3) so that it cannot move; The fixing component includes: The first electromagnet (8) is ring-shaped and is installed inside the rotating wheel (7); A storage battery (9) is disposed at one end of the rotating wheel (7) to supply power to the first electromagnet (8); The controller is located inside the welding torch (1) and can remotely control the first electromagnet (8) to be energized and de-energized. The locking component includes: The frame (10) is connected to the outside of the slider (6); Iron block (11) is slidably disposed inside the frame (10); The second electromagnet (14) is connected to the outside of the bracket (3) and can attract and fix the iron block (11) when energized; An anti-deflection assembly is used to prevent deflection between the slider (6) and the rotating wheel (7); A reset assembly for resetting the iron block (11); The anti-deflection component includes: The connecting plate (17) is slidably disposed on the outside of the slider (6); The second spring (18) is connected to the connecting plate (17) and is used to drive the connecting plate (17) to reset. A clamping plate (16) is attached to the bottom of the connecting plate (17); A rubber pad is provided at the bottom of the clamp (16); A pusher assembly is used to push the connecting plate (17) downward.

2. The plasma arc welding machine for processing wire harness terminals according to claim 1, characterized in that: The actuating component includes: A pressure plate (15) is attached to the outside of the iron block (11); The drive block (19) is connected to the outside of the connecting plate (17); Inclined surfaces (20) are provided at the bottom of the pressure plate (15) and the top of the drive block (19), with the two inclined surfaces (20) in contact.

3. The plasma arc welding machine for processing wire harness terminals according to claim 2, characterized in that: The reset component includes: A push plate (12) is attached to the top of the iron block (11); The third spring (13) connects the push plate (12) to the frame (10) on the side near the second electromagnet (14).

4. The plasma arc welding machine for processing wire harness terminals according to claim 3, characterized in that: The bottom of the positioning plate (2) is provided with an electric heating plate (21).

5. The plasma arc welding machine for processing wire harness terminals according to claim 4, characterized in that: The rotating wheel (7) is made of ceramic. When the first electromagnet (8) is energized, it can be attracted and fixed to the positioning plate (2) through the rotating wheel (7).

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