A resistance welding machine for welding thin plates

Abstract

The invention discloses a resistance welding machine for welding thin plates, and relates to the technical field of welding machines, comprising a fuselage, wherein a moving platform and a carrier are arranged inside the fuselage, a substrate is arranged above the carrier, a thin sheet is arranged above the substrate, and a welding head is arranged below the moving platform; an extrusion plate 1 and an extrusion plate 2 are respectively arranged on both sides of the substrate, and the outer sides of the extrusion plate 1 and the extrusion plate 2 are both provided with a U-shaped tube and a sliding plug, a transfer tube is arranged at the end of the U-shaped tube, a fixed cylinder is arranged on the outer wall of the transfer tube, and a connecting frame is arranged on the outer wall of the fixed cylinder. In this resistance welding machine, after the substrate and the thin sheet after welding enter the interior of the correction plate, the horizontality and thickness of the correction plate itself, the air pressure inside the vertical cylinder 1 will drive the rack and the gear ring to transmit, thereby causing the friction pad to have a self-rotation effect, effectively grinding the welding burn marks at the welding position, and improving the final welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, in particular to a resistance welding machine for welding thin plates. Background Art

[0002] Welding equipment can be classified into spot welders, seam welders, projection welders, butt welders, etc. based on the welding method; and can be classified into lever type, electric cam type, pneumatic type, hydraulic type, and pneumatic and hydraulic combined type based on the electrode pressure form. Resistance welding machine is a common welding machine. It uses the resistance heat generated inside the weldment to conduct from the high temperature area to the low temperature area to heat and melt the metal to achieve welding. It is mainly used for welding thin plate products.

[0003] In the actual welding process of thin plates, resistance welding machines are usually carried out in the form of spot welding, so contact spot welding is required in local areas of the thin plates. Since the thin plates for this type of welding are mostly metal materials with low hardness, the heated contact parts are prone to local deformation during the local welding process. If the deformed area is not treated in time before cooling, it is easy to harden. Slight deformation may cause the welding of the thin plate and the substrate to be not on the same horizontal plane, which will have an adverse effect on subsequent processing procedures and reduce the final welding quality.

[0004] To this end, the present invention provides a resistance welding machine for thin plate welding. Summary of the invention

[0005] The object of the present invention is to provide a resistance welding machine for thin plate welding to solve the problems raised in the above background technology. To achieve the above object, the present invention provides the following technical solutions: a resistance welding machine for thin plate welding, comprising a body, a moving platform and a carrier are arranged inside the body, a substrate is arranged above the carrier, a thin sheet is arranged above the substrate, and a welding head is arranged below the moving platform;

[0006] An extrusion plate 1 and an extrusion plate 2 are respectively provided on both sides of the base plate, and the outer sides of the extrusion plate 1 and the extrusion plate 2 are both provided with a U-shaped tube and a sliding plug, a transfer tube is provided at the end of the U-shaped tube, a fixed tube is provided on the outer wall of the transfer tube, a connecting frame is provided on the outer wall of the fixed tube, and the end of the connecting frame is fixedly connected to the carrier, an air pipe 1 connected to the fixed tube is provided at the end of the air pipe 1, a vertical tube 1 is provided at the end of the air pipe 1, a plug body 1 is provided inside the vertical tube 1, a connecting rod is provided at the end of the plug body 1, a bending rod is provided above the connecting rod, and the end of the bending rod is fixedly connected to the moving platform, and the interiors of the vertical tube 1, the air pipe 1, the transfer tube and the U-shaped tube are all in a negative pressure state;

[0007] A correction plate is provided above the carrier, the inner wall height of the correction plate is equal to the total thickness of the substrate and the thin sheet, a friction pad is provided inside the correction plate, and a grinding unit for driving the friction pad to rotate inside the correction plate is provided on one side of the carrier, and the bottom surface of the friction pad is in contact with the surface of the welding part.

[0008] Preferably, the grinding unit includes a gear ring on the outer wall of the friction pad, one side of the gear ring is provided with a rack meshing with the gear ring, the end of the rack is provided with a plug body 2, the outer wall of the plug body 2 is provided with a fixing box, the end of the fixing box is provided with an air pipe 2 connected with the plug body, the other end of the air pipe 2 is connected with a vertical cylinder 1, and the interiors of the air pipe 2, the fixing box and the vertical cylinder 1 are all in a negative pressure state.

[0009] Preferably, a conveyor belt is provided above the carrier, a connecting shaft is provided on the inner wall of the roller shaft of the conveyor belt, a box body is provided on the outer wall of the connecting shaft, fan blades are provided inside the box body, the fan blades are located on the outer wall of the connecting shaft and are fixedly connected thereto, an air pipe three is provided on the outer wall of the box body, a vertical cylinder two connected thereto is provided at the end of the air pipe three, a sliding pad is provided inside the vertical cylinder two, a vertical rod is provided on one side of the sliding pad, and the end of the vertical rod is fixedly connected to the connecting rod.

[0010] Preferably, a plug body three is provided below the connecting rod, a vertical cylinder three is provided on the outer wall of the plug body three, a one-way valve is provided inside the vertical cylinder three, an air pipe four connected to the vertical cylinder three is provided at the bottom of the outer wall, an outer cylinder is provided at the other end of the air pipe four, the outer cylinder is located outside the welding head, and the end of the outer cylinder is fixedly connected to the moving platform.

[0011] Preferably, a rod body is provided inside between the extrusion plate 1 and the extrusion plate 2, a spring is provided outside the rod body, and two ends of the spring are fixedly connected to the extrusion plate 1 and the extrusion plate 2 respectively.

[0012] Preferably, an elastic sheet is provided above the correction plate, and the elastic sheet is located above the friction pad and is rotatably connected thereto, and the elastic force of the elastic sheet, under normal conditions, squeezes the bottom surface of the friction pad and the welding surface into contact with each other.

[0013] Preferably, the end of the air pipe three is aligned with the rotating part of the fan blade.

[0014] Preferably, the surface of the conveyor belt has a magnetic force that attracts the thin film, and there is damping between the conveyor belt and its roller. After the substrate and the thin film are welded, the substrate is laterally displaced and the conveyor belt will not produce a conveying effect.

[0015] Preferably, the bottom edge of the friction pad is shaped like an arc, and the protruding end of the correction plate and the carrier are parallel to each other.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. In the present invention, the moving platform that moves up and down will drive the bending rod and the connecting rod to move together. During the descending process, the connecting rod will drive the plug body 1 to descend inside the vertical cylinder 1, and then the gas inside the vertical cylinder 1 will enter the interior of the U-shaped tube, so that the extrusion plate 1 and the extrusion plate 2 will squeeze the two sides of the substrate at the same time. On the other hand, the gas will also push the transfer tube to move laterally in the fixed tube, so that the welded substrate and the thin sheet are pushed laterally on the inner wall of the correction plate, and the deformed parts of the substrate and the thin sheet are effectively straightened. At the same time, the welding surface will resist each other with the bottom area of ​​the friction pad, and under the continuous movement of the substrate, the welding burn marks on the welding surface are effectively polished, thereby improving the final welding quality.

[0018] 2. In the present invention, during the descending process of the plug body 1, a part of the gas in the vertical cylinder 1 will also enter the interior of the fixed box through the air pipe 2, thereby pushing the plug body 2 and the rack to move, allowing the rack and the gear ring to transmit to each other, and finally driving the friction pad to rotate inside the correction plate, cooperating with the continuously moving base plate and the thin sheet. While the two are correcting, the degree of polishing of the friction pad on the welding surface is further enhanced, so that the beauty and straightness of the welding area are effectively improved, and the final welding quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a side view of the overall structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 A magnified view of the structure of the middle A area;

[0022] Figure 4 This is a cross-sectional view of the grinding unit structure of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the grinding unit of the present invention from another angle;

[0024] Figure 6 It is a structural schematic diagram of another angle of the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified view of the structure of the middle B area;

[0026] Figure 8 It is a structural cross-sectional view from another angle of the present invention;

[0027] Fig. 9 For the present invention Figure 8 A magnified view of the structure of the middle C region;

[0028] Fig.10 For the present invention Figure 8 A magnified view of the structure of the middle D region;

[0029] Fig.11 It is a schematic diagram of the local structure of the present invention.

[0030] In the figure: 1-body; 2-moving platform; 3-carrying platform; 4-substrate; 5-sheet; 6-welding head; 7-extrusion plate 1; 8-extrusion plate 2; 9-U-shaped tube; 10-sliding plug; 11-transfer tube; 12-fixed tube; 13-connecting frame; 14-air pipe 1; 15-vertical tube 1; 16-plug body 1; 17-connecting rod; 18-bending rod; 19-correction plate; 20-friction pad; 21-grinding unit; 2101- Gear ring; 2102-rack; 2103-plug body 2; 2104-fixed box; 2105-trachea 2; 22-conveyor belt; 23-connecting shaft; 24-box body; 25-fan blades; 26-trachea 3; 27-vertical cylinder 2; 28-sliding pad; 29-vertical rod; 30-plug body 3; 31-vertical cylinder 3; 32-check valve; 33-trachea 4; 34-outer cylinder; 35-rod body; 36-spring; 37-elastic sheet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-11 The present invention provides a technical solution: a resistance welding machine for thin plate welding, comprising:

[0033] Embodiment 1,

[0034] The fuselage 1 has a movable platform 2 and a carrier 3 disposed inside the fuselage 1. The bottom of the carrier 3 is fixedly connected to the fuselage 1. A substrate 4 is disposed above the carrier 3. A thin sheet 5 is disposed above the substrate 4. The substrate 4 and the thin sheet 5 are two materials used for welding. This scheme is described by taking the two as examples. A welding head 6 is disposed below the movable platform 2 and is fixedly connected thereto. The movable platform 2 and the welding head 6 are driven by a control device inside the fuselage 1 to automatically perform reciprocating welding work up and down. The above are all prior arts and are traceable in related fields.

[0035] Extrusion plates 1 7 and 2 8 are provided on both sides of the base plate 4, respectively. A rod body 35 is provided inside between the extrusion plates 1 7 and 2 8 and is slidably connected thereto. A spring 36 is provided outside the rod body 35. Both ends of the spring 36 are fixedly connected to the extrusion plates 1 7 and 2 8, respectively. Under normal conditions, the elastic force of the spring 36 can make the inner walls of the extrusion plates 1 7 and 2 8 respectively contact and squeeze the two sides of the base plate 4. The outer sides of the extrusion plates 1 7 and 2 8 are provided with U-shaped tubes 9 and sliding plugs 10. The sliding plugs 10 slide freely inside the U-shaped tubes 9. The ends of the U-shaped tubes 9 are provided with transfer tubes 11 and are fixedly connected thereto. The outer wall of the transfer tube 11 is provided with a fixed cylinder 12 and is slidably connected thereto. The fixed cylinder 12 is provided on the outer wall of the transfer tube 11 and is slidably connected thereto. The outer wall of 12 is provided with a connecting frame 13 and fixedly connected thereto, the end of the connecting frame 13 is fixedly connected to the carrier 3, the end of the fixed cylinder 12 is provided with an air pipe 14 connected thereto, the end of the air pipe 14 is provided with a vertical cylinder 15, the two ends of the air pipe 14 are respectively fixedly connected to the fixed cylinder 12 and the vertical cylinder 15, the interior of the vertical cylinder 15 is provided with a plug body 16 and slidably connected thereto, the end of the plug body 16 is provided with a connecting rod 17 and fixedly connected thereto, a bending rod 18 is provided above the connecting rod 17 and fixedly connected thereto, the overall shape of the bending rod 18 is L-shaped, the end of the bending rod 18 is fixedly connected to the moving platform 2, the interiors of the vertical cylinder 15, the air pipe 14, the transfer tube 11 and the U-shaped tube 9 are all in a negative pressure state;

[0036] When the plug body 16 is in a downward trend inside the vertical cylinder 15, the gas enters the fixed cylinder 12 through the gas pipe 14, and pushes the transfer tube 11 and the two U-shaped tubes 9 to move. At the same time, the extrusion plate 17 and the extrusion plate 28 are in an extrusion state on the base plate 4, so the base plate 4 will move with the displacement of the U-shaped tube 9; conversely, when the plug body 16 rises, the gas re-enters the interior of the vertical cylinder 15 from the U-shaped tube 9, and drives the extrusion plate 17 and the extrusion plate 28 to open each other, so that the transfer tube 11 is reset, making the welding work of the equipment more automated and more convenient to operate.

[0037] A correction plate 19 is provided above the carrier 3 and is fixedly connected thereto. The inner wall height of the correction plate 19 is equal to the total thickness of the substrate 4 and the thin sheet 5. A friction pad 20 is provided inside the correction plate 19. The friction pad 20 can slide and rotate freely inside the correction plate 19. A grinding unit 21 for driving the friction pad 20 to rotate inside the correction plate 19 is provided on one side of the carrier 3. The grinding unit 21 includes a toothed ring 2101 on the outer wall of the friction pad 20. The friction pad 20 can slide freely on the inner wall of the toothed ring 2101. The toothed ring 2101 can drive the friction pad 20 to rotate. The toothed ring 2101 is rotatably connected to the correction plate 19. A rack 2102 meshing with the rack 2102 is provided on one side of the toothed ring 2101. A plug body 2103 is provided at the end of the rack 2102 and is fixedly connected thereto. A fixed box 2104 is provided on the outer wall of the plug body 2103 and is slidably connected thereto. Then, the bottom of the fixed box 2104 is fixedly connected to the correction plate 19, and the end of the fixed box 2104 is provided with an air pipe 2105 connected thereto, and the other end of the air pipe 2105 is connected to and fixedly connected with the vertical cylinder 15. The interiors of the air pipe 2105, the fixed box 2104 and the vertical cylinder 15 are all in a negative pressure state. An elastic sheet 37 is provided above the correction plate 19 and is fixedly connected thereto. The elastic sheet 37 is located above the friction pad 20 and is rotatably connected thereto. Under normal conditions, the elastic force of the elastic sheet 37 squeezes the bottom surface of the friction pad 20 to contact the welding surface. The shape of the bottom edge of the friction pad 20 is an arc surface, which makes it easier for the welding surface of the thin sheet 5 to resist the friction pad 20, thereby increasing the friction force of the friction pad 20 on the welding surface. The protruding end of the correction plate 19 is parallel to the carrier 3.

[0038] After the welding is completed, the substrate 4 and the thin sheet 5 enter the interior of the correction plate 19, and the horizontality and thickness of the correction plate 19 itself will make a preliminary correction to the flatness of the two. At the same time, the air pressure inside the vertical cylinder 15 will drive the rack 2102 and the gear ring 2101 to transmit, thereby causing the friction pad 20 to rotate, effectively grinding the welding marks at the welding point and improving the final welding quality.

[0039] A conveyor belt 22 is provided above the carrier 3. The conveyor belt 22 is fixed to the side of the carrier 3 through its own roller shaft. A connecting shaft 23 is provided on the inner wall of the roller shaft of the conveyor belt 22 and is fixedly connected thereto. A box body 24 is provided on the outer wall of the connecting shaft 23 and is rotatably connected thereto. The outer wall of the box body 24 is fixedly connected to the carrier through a connecting strip. A fan blade 25 is provided inside the box body 24. The fan blade 25 is located on the outer wall of the connecting shaft 23 and is fixedly connected thereto. An air pipe 3 26 is provided on the outer wall of the box body 24 and is connected thereto. An air pipe 3 26 is provided at the end of the air pipe 3 26 and is connected thereto. The bottoms of the vertical cylinder 15 and the vertical cylinder 27 are both connected to the carrier. The platform 3 is fixedly connected, and a sliding pad 28 is provided inside the vertical cylinder 27. The sliding pad 28 slides freely inside the vertical cylinder 27. A vertical rod 29 is provided on one side of the sliding pad 28 and is fixedly connected thereto. The end of the vertical rod 29 is fixedly connected to the connecting rod 17. The end of the air pipe 3 26 is aligned with the rotating part of the fan blade 25, which makes it easier for the flowing gas to push the fan blade 25 to rotate. The surface of the conveyor belt 22 has a magnetic force that attracts the thin film 5. There is damping between the conveyor belt 22 and its roller shaft. In the process of moving the substrate 4 after the substrate 4 and the thin film 5 are welded, the conveyor belt 22 will not have a conveying effect.

[0040] When in use, the moving platform 2 moving up and down will drive the bending rod 18 and the connecting rod 17 to move together. During the descending process, the connecting rod 17 will drive the plug body 16 to descend inside the vertical cylinder 15, and then the gas inside the vertical cylinder 15 will enter the interior of the fixed cylinder 12 and the interior of the U-shaped tube 9, so that the extrusion plate 17 and the extrusion plate 28 squeeze the two sides of the substrate 4 at the same time. On the other hand, the gas will also push the transfer tube 11 to move laterally in the fixed cylinder 12, so that the welded substrate 4 and the thin sheet 5 are pushed laterally on the inner wall of the correction plate 19, and the deformed parts of the substrate 4 and the thin sheet 5 are effectively straightened. The welding surface will resist each other with the bottom area of ​​the friction pad 20, and the welding marks on the welding surface will be effectively polished under the continuous movement of the substrate 4, thereby improving the final welding quality; in the process of the connecting rod 17 rising, the vertical rod 29 will drive the sliding pad 28 to rise in the vertical cylinder 27, so that the gas inside the vertical cylinder 27 enters the interior of the box body 24 through the air pipe 3 26, and blows the fan blade 25 to rotate, thereby driving the connecting shaft 23 and the roller shaft of the conveyor belt 22 to rotate, so that the conveyor belt 22 drives the thin sheet 5 above it to automatically move until it stops at the position directly below the welding head 6, which is more convenient for the secondary welding work of the welding head 6;

[0041] It is worth noting that during the descent of the plug body 16, a portion of the gas in the vertical cylinder 15 will also enter the interior of the fixed box 2104 through the air pipe 2105, thereby pushing the plug body 2103 and the rack 2102 to move, allowing the rack 2102 and the gear ring 2101 to transmit information to each other, and finally driving the friction pad 20 to rotate inside the correction plate 19, cooperating with the continuously moving base plate 4 and the thin sheet 5. While the two are being corrected, the degree of polishing of the welding surface by the friction pad 20 is further strengthened, so that the beauty and straightness of the welding area are effectively improved, thereby improving the final welding quality.

[0042] According to the above embodiment, embodiment 2,

[0043] A plug body 30 is provided below the connecting rod 17 and is fixedly connected thereto, a vertical cylinder 31 is provided on the outer wall of the plug body 30 and is slidably connected thereto, the bottom of the vertical cylinder 31 is fixedly connected to the carrier 3, a one-way valve 32 is installed inside the vertical cylinder 31, and the flow direction of the one-way valve 32 is from the inside of the vertical cylinder 31 to the outside, but not vice versa, an air pipe 4 33 is provided at the bottom of the outer wall of the vertical cylinder 31 and is connected thereto, an outer cylinder 34 is provided at the other end of the air pipe 4 33 and is connected thereto, the outer cylinder 34 is located outside the welding head 6, and the end of the outer cylinder 34 is fixedly connected to the moving platform 2;

[0044] When the welding head 6 is welding the thin sheet 5, the instantaneous welding of the thin sheet 5 will produce smoke and metal debris, and some of these substances will enter the interior of the outer cylinder 34; at the same time, during the rising process of the connecting rod 17, the plug body three 30 will drive the air pipe four 33 to exhaust the interior of the outer cylinder 34, and then these harmful substances will be sucked into the interior of the vertical cylinder three 31 for storage, which is beneficial to maintaining the cleanliness of the welding environment and ensuring the health of the staff. During the descending process of the plug body three 30, the gas inside the vertical cylinder three 31 will be discharged to the outside through the one-way valve 32, so that the vertical cylinder three 31 will resume its suction function to the interior of the outer cylinder 34.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistance welding machine for thin plate welding, comprising a body (1), wherein a movable platform (2) and a carrier (3) are arranged inside the body (1), a substrate (4) is arranged above the carrier (3), a thin sheet (5) is arranged above the substrate (4), and a welding head (6) is arranged below the movable platform (2); Features: The base plate (4) is provided with an extrusion plate 1 (7) and an extrusion plate 2 (8) on both sides, and the outer sides of the extrusion plate 1 (7) and the extrusion plate 2 (8) are provided with a U-shaped tube (9) and a sliding plug (10). The end of the U-shaped tube (9) is provided with a transfer tube (11), and the outer wall of the transfer tube (11) is provided with a fixed tube (12). The outer wall of the fixed tube (12) is provided with a connecting frame (13), and the end of the connecting frame (13) is fixedly connected to the carrier (3), and the end of the fixed tube (12) is fixedly connected to the carrier (3). A trachea (14) connected thereto is provided, a vertical tube (15) is provided at the end of the trachea (14), a plug body (16) is provided inside the vertical tube (15), a connecting rod (17) is provided at the end of the plug body (16), a bending rod (18) is provided above the connecting rod (17), the end of the bending rod (18) is fixedly connected to the moving platform (2), and the interiors of the vertical tube (15), the trachea (14), the transfer tube (11) and the U-shaped tube (9) are all in a negative pressure state; A correction plate (19) is provided above the carrier (3), the inner wall height of the correction plate (19) is equal to the total thickness of the substrate (4) and the thin sheet (5), a friction pad (20) is provided inside the correction plate (19), and a grinding unit (21) for driving the friction pad (20) to rotate inside the correction plate (19) is provided on one side of the carrier (3), the bottom surface of the friction pad (20) is in contact with the surface of the welding part, and the grinding unit (21) includes a toothed ring (2101) on the outer wall of the friction pad (20), and the toothed ring ( A rack (2102) meshing with the vertical tube (15) is provided on one side of the vertical tube (2101), a plug body (2103) is provided at the end of the rack (2102), a fixing box (2104) is provided on the outer wall of the plug body (2103), an air pipe (2105) connected to the plug body is provided at the end of the fixing box (2104), and the other end of the air pipe (2105) is connected to the vertical tube (15), and the interiors of the air pipe (2105), the fixing box (2104) and the vertical tube (15) are all in a negative pressure state.

2. A resistance welding machine for thin plate welding according to claim 1, characterized in that: A conveyor belt (22) is provided above the carrier (3), a connecting shaft (23) is provided on the inner wall of the roller shaft of the conveyor belt (22), a box body (24) is provided on the outer wall of the connecting shaft (23), a fan blade (25) is provided inside the box body (24), the fan blade (25) is located on the outer wall of the connecting shaft (23) and is fixedly connected thereto, an air pipe three (26) is provided on the outer wall of the box body (24), a vertical cylinder two (27) connected thereto is provided at the end of the air pipe three (26), a sliding pad (28) is provided inside the vertical cylinder two (27), a vertical rod (29) is provided on one side of the sliding pad (28), and the end of the vertical rod (29) is fixedly connected to the connecting rod (17).

3. The resistance welding machine for thin plate welding according to claim 1, characterized in that: A plug body three (30) is provided below the connecting rod (17), a vertical cylinder three (31) is provided on the outer wall of the plug body three (30), a one-way valve (32) is provided inside the vertical cylinder three (31), an air pipe four (33) connected to the vertical cylinder three (31) is provided at the bottom of the outer wall, an outer cylinder (34) is provided at the other end of the air pipe four (33), the outer cylinder (34) is located outside the welding head (6), and the end of the outer cylinder (34) is fixedly connected to the moving platform (2).

4. The resistance welding machine for thin plate welding according to claim 1, characterized in that: A rod body (35) is provided inside between the extrusion plate 1 (7) and the extrusion plate 2 (8), and a spring (36) is provided outside the rod body (35). Two ends of the spring (36) are respectively fixedly connected to the extrusion plate 1 (7) and the extrusion plate 2 (8).

5. The resistance welding machine for thin plate welding according to claim 1, characterized in that: An elastic sheet (37) is provided above the correction plate (19), and the elastic sheet (37) is located above the friction pad (20) and is rotatably connected thereto. In a normal state, the elastic force of the elastic sheet (37) presses the bottom surface of the friction pad (20) and the welding surface to contact each other.

6. A resistance welding machine for thin plate welding according to claim 2, characterized in that: The end of the air pipe three (26) is aligned with the rotating part of the fan blade (25).

7. The resistance welding machine for thin plate welding according to claim 2, characterized in that: The surface of the conveyor belt (22) has a magnetic force that attracts the thin sheet (5), and there is damping between the conveyor belt (22) and its roller. After the substrate (4) and the thin sheet (5) are welded, the substrate (4) is laterally displaced, and the conveyor belt (22) will not produce a conveying effect.

8. The resistance welding machine for thin plate welding according to claim 7, characterized in that: The bottom edge of the friction pad (20) is shaped in the form of an arc surface, and the protruding end of the correction plate (19) and the carrier (3) are parallel to each other.

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