Intermediate-frequency inverter spot welding machine

Abstract

The utility model discloses an intermediate frequency inverter spot welding machine which comprises a machine body, the bottom of the machine body is fixedly connected with a base, one end of the inner side of the machine body is fixedly connected with a fixing frame, the upper end of the fixing frame is fixedly connected with an air cylinder, and the extending end of the air cylinder penetrates through the fixing frame and is fixedly connected with a movable frame downwards. A movable frame is fixedly connected to one end of the inner side of the machine body, a second connecting piece is fixedly connected to the outer end of the movable frame, a second mounting piece is fixedly connected to the interior of the second connecting piece, and a mounting frame is fixedly connected to the other end of the inner side of the machine body. And meanwhile, screw rods are arranged in the two connecting pieces, and positioning blocks can be matched with positioning holes in limiting columns, so that workers can conveniently and rapidly disassemble and assemble the welding head, and the applicability and the high efficiency of the whole welding machine are improved.

Description

Technical Field

[0001] This utility model relates to the field of medium frequency inverter spot welding machines, specifically a medium frequency inverter spot welding machine. Background Technology

[0002] Medium-frequency inverter DC spot welding machines offer superior performance and are suitable for welding thin metal parts with high thermal conductivity and precision workpieces. The machine rectifies and filters 50Hz AC power into a medium-frequency square wave of 800Hz to 2000Hz. This wave is then stepped down to low-voltage AC power by a medium-frequency transformer (which is only about 40% the size and weight of a traditional welding transformer), and further rectified into low-voltage DC power by a single-phase full-wave rectifier. The power is then applied to the workpiece using an integrated spot welding clamp or a fixed spot welding machine. The IGBT inverter, with a frequency of 1000kHz, allows for precise control of welding energy, making it ideal for welding thin metal parts with high thermal conductivity.

[0003] However, existing medium-frequency inverter welding machines have certain defects. The welding head and connecting parts of traditional medium-frequency inverter welding machines are fastened with bolts. The bolts are prone to rusting or jamming, which can cause the welding head to loosen during use and create safety hazards. At the same time, it is not convenient to quickly remove the welding head afterward, which increases the labor intensity of the workers. Utility Model Content

[0004] The purpose of this utility model is to provide a medium-frequency inverter spot welding machine, which solves the problem that in the prior art, the welding head and connecting parts of the medium-frequency inverter welding machine are fastened with bolts, which are prone to rusting or jamming, causing the welding head to loosen during use and creating safety hazards.

[0005] To achieve the above objectives, a medium-frequency inverter spot welding machine is provided, comprising a machine body, a base fixedly connected to the bottom of the machine body, a fixed frame fixedly connected to one inner end of the machine body, a cylinder fixedly connected to the upper end of the fixed frame, an extension end of the cylinder passing through the fixed frame and fixedly connected to a movable frame downwards, a connecting piece two fixedly connected to the outer end of the movable frame, an mounting piece two fixedly connected inside the connecting piece two, and a mounting frame fixedly connected to the other inner end of the machine body;

[0006] The outer end of the mounting bracket is fixedly connected to a connector one, and the inner end of the connector one is fixedly connected to a mounting component one. The inner ends of the mounting component two and the mounting component one are respectively provided with welding heads. The inner ends of the mounting component one and the mounting component two are provided with limit grooves. One end of the welding head is fixedly connected to a limit post, and the limit post corresponds to the limit groove.

[0007] According to the aforementioned medium-frequency inverter spot welding machine, a limiting block is fixedly connected to the inner middle of the limiting groove, and a limiting hole is opened at the outer end of the limiting column, with the limiting block corresponding to the limiting hole.

[0008] According to the medium-frequency inverter spot welding machine, the inner ends of the second mounting component and the first mounting component are provided with slots, and a screw is rotatably connected inside the slot.

[0009] According to the medium-frequency inverter spot welding machine, the outer end of the screw is threadedly connected to a positioning block, and the outer ends of the limiting post are provided with positioning holes, with the positioning block corresponding to the positioning holes.

[0010] According to the medium-frequency inverter spot welding machine, the inner two ends of the slot are provided with sliding grooves, and the two ends of the positioning block are fixedly connected with sliders, which are slidably connected inside the sliding grooves.

[0011] According to the medium-frequency inverter spot welding machine, the inner end of the machine body is provided with a sliding groove, and the inner end of the movable frame is fixedly connected with a slider, which is slidably connected inside the sliding groove.

[0012] According to the aforementioned medium-frequency inverter spot welding machine, a controller is provided at one end of the outer side of the machine body, and heat dissipation vents are provided at both ends of the machine body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This patent enables two welding heads to work together to achieve stable welding of the workpiece by setting up a mounting frame, cylinder, and movable frame. At the same time, screws and positioning blocks are set inside the two connecting parts to cooperate with the positioning holes on the limiting column, thereby facilitating the quick assembly and disassembly of the welding heads by the workers and improving the practicality and efficiency of the entire welding machine.

[0015] 2. This patent enables rapid positioning of the welding head by setting positioning blocks and positioning grooves, while setting sliding grooves and sliders to ensure the stability of the limiting block during movement and improve the strength of the connection.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is an overall schematic diagram of a medium-frequency inverter spot welding machine according to the present invention;

[0019] Figure 2 This is a side view of a medium-frequency inverter spot welding machine according to the present invention;

[0020] Figure 3This is a schematic diagram of the welding head installation of a medium-frequency inverter spot welding machine according to the present invention;

[0021] Figure 4 This is a schematic diagram of the screw assembly of a medium-frequency inverter spot welding machine according to the present invention.

[0022] In the diagram: 1. Base; 2. Mounting bracket; 3. Connector 1; 4. Mounting bracket 1; 5. Welding head; 6. Mounting bracket 2; 7. Connector 2; 8. Movable frame; 9. Cylinder; 10. Fixed frame; 11. Controller; 12. Body; 13. Heat dissipation vent; 14. Slider 1; 15. Slider 2; 16. Slide groove 1; 17. Limiting post; 18. Limiting hole; 19. Screw; 20. Limiting block; 21. Limiting groove; 22. Slot; 23. Positioning block; 24. Positioning hole; 25. Slide groove 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a medium frequency inverter spot welding machine, including a body 12, a base 1 fixedly connected to the bottom of the body 12, a fixed frame 10 fixedly connected to one end of the inner side of the body 12, a cylinder 9 fixedly connected to the upper end of the fixed frame 10, a movable frame 8 fixedly connected to the extended end of the cylinder 9 through the fixed frame 10, a connecting part 2 7 fixedly connected to the outer end of the movable frame 8, an mounting part 2 6 fixedly connected inside the connecting part 2 7, and a mounting frame 2 fixedly connected to the other end of the inner side of the body 12. By starting the cylinder 9, the movable frame 8 and the welding head 5 above can be moved downward, so that the welding head 5 above can correspond with the welding head 5 below to complete the welding operation on the workpiece.

[0025] The outer end of the mounting bracket 2 is fixedly connected to the connector 3. The inner end of the connector 3 is fixedly connected to the mounting component 4. The inner ends of the mounting component 6 and the mounting component 4 are respectively provided with welding heads 5. The mounting component 4 and the mounting component 6 have limit grooves 21 inside. One end of the welding head 5 is fixedly connected to the limit post 17. The limit post 17 corresponds to the limit groove 21. The quick correspondence between the limit groove 21 and the limit post 17 makes it easy for workers to disassemble and assemble the welding head 5.

[0026] A limiting block 20 is fixedly connected to the inner middle of the limiting groove 21. A limiting hole 18 is opened at the outer end of the limiting post 17. The limiting block 20 corresponds to the limiting hole 18. The inner ends of the mounting part 2 6 and the mounting part 1 4 are provided with slots 22. The inside of the slots 22 is rotatably connected to the screw 19. The outer end of the screw 19 is threadedly connected to the positioning block 23. The outer ends of the limiting post 17 are provided with positioning holes 24. The positioning block 23 corresponds to the positioning hole 24. The limiting post 17 on the welding head 5 is aligned with the limiting groove 21 inside the two connecting parts. Then the limiting post 17 is directly inserted into the inside of the limiting groove 21. At this time, the limiting block 20 can be aligned with the limiting hole 18. The operator rotates the screw 19 at both ends. Under the restriction of the threaded connection and the sliding block 2 15 and the sliding groove 25, the positioning block 23 moves outward and enters the inside of the positioning hole 24 to complete the quick snap-fit ​​installation of the welding head 5.

[0027] The inner two ends of the slot 22 are provided with sliding grooves 25, and the two ends of the positioning block 23 are fixedly connected with sliders 15. The sliders 15 are slidably connected inside the sliding grooves 25. By setting sliders 15 and sliding grooves 25, the positioning block 23 can be restricted. At the same time, the positioning block 23 and the positioning hole 24 are both square designs, which can further improve the snap-fit ​​effect.

[0028] The inner end of the body 12 is provided with a slide groove 16, and the inner end of the movable frame 8 is fixedly connected with a slider 14. The slider 14 is slidably connected inside the slide groove 16. By setting the slide groove 16 and the slider 14, the stability of the movable frame 8 during lifting and lowering can be improved. A controller 11 is provided at one end of the outer side of the body 12, and heat dissipation vents 13 are provided at both ends of the body 12. The controller 11 can control the stable operation of the entire device, while the heat dissipation vents 13 at both ends can quickly dissipate heat from the electronic components inside the body 12.

[0029] Working principle: In use, the operator first installs the welding head 5, aligning the limiting post 17 on the welding head 5 with the limiting groove 21 inside the two connecting parts. Then, the limiting post 17 is directly inserted into the limiting groove 21. At this time, the limiting block 20 can align with the limiting hole 18. The operator rotates the screws 19 at both ends, and under the restriction of the threaded connection and the second slider 15 and the second groove 25, the positioning block 23 moves outward, thus entering the positioning hole 24 to complete the quick snap-fit ​​installation of the welding head 5. Finally, the workpiece is placed on the lower welding head 5, and the entire equipment is started. Then, under the action of the cylinder 9, the second mounting part 6 and the welding head 5 can move downward, so that the two welding heads 5 contact the two ends of the workpiece. The alternating current is converted and transformed into medium frequency direct current by the transformer, and the welding head 5 contacts the part to generate high temperature welding of the part.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A medium-frequency inverter spot welding machine, comprising a body (12), characterized in that, The bottom of the body (12) is fixedly connected to a base (1), and a fixed frame (10) is fixedly connected to one end of the inner side of the body (12). A cylinder (9) is fixedly connected to the upper end of the fixed frame (10). The extended end of the cylinder (9) passes through the fixed frame (10) and is fixedly connected to a movable frame (8) downwards. A connecting piece two (7) is fixedly connected to the outer end of the movable frame (8). An installation piece two (6) is fixedly connected inside the connecting piece two (7). An installation frame (2) is fixedly connected to the other end of the inner side of the body (12). The outer end of the mounting bracket (2) is fixedly connected to a connector (3), and the inner end of the connector (3) is fixedly connected to a mounting component (4). The inner ends of the mounting component (6) and the mounting component (4) are respectively provided with welding heads (5). The mounting component (4) and the mounting component (6) have limiting grooves (21) inside. One end of the welding head (5) is fixedly connected to a limiting post (17), and the limiting post (17) corresponds to the limiting groove (21).

2. The medium-frequency inverter spot welding machine as described in claim 1, characterized in that: A limiting block (20) is fixedly connected to the inner middle of the limiting groove (21), and a limiting hole (18) is opened at the outer end of the limiting post (17). The limiting block (20) corresponds to the limiting hole (18).

3. The medium-frequency inverter spot welding machine as described in claim 1, characterized in that: The inner ends of the second mounting component (6) and the first mounting component (4) are provided with slots (22), and a screw (19) is rotatably connected inside the slot (22).

4. The medium-frequency inverter spot welding machine as described in claim 3, characterized in that: The outer end of the screw (19) is threaded with a positioning block (23), and the outer ends of the limiting post (17) are provided with positioning holes (24), and the positioning block (23) corresponds to the positioning hole (24).

5. A medium-frequency inverter spot welding machine as described in claim 4, characterized in that: The inner two ends of the slot (22) are provided with sliding grooves (25), and the two ends of the positioning block (23) are fixedly connected with sliders (15), which are slidably connected inside the sliding grooves (25).

6. The medium-frequency inverter spot welding machine as described in claim 1, characterized in that: The inner end of the body (12) is provided with a sliding groove (16), and the inner end of the movable frame (8) is fixedly connected with a slider (14), which is slidably connected inside the sliding groove (16).

7. The medium-frequency inverter spot welding machine as described in claim 1, characterized in that: A controller (11) is provided at one end of the outer side of the body (12), and heat dissipation vents (13) are provided at both ends of the body (12).

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