Welding positioning device for thermoelectric equipment production

Abstract

The invention relates to the field of welding, in particular to a welding positioning device for thermoelectric equipment production, which comprises a positioning seat, a central column is fixedly mounted at the upper end of the positioning seat close to the middle, a distribution groove plate is fixedly mounted at the upper end of the central column, and positioning grooves are formed in the upper end of the distribution groove plate close to the front edge and the rear edge. The opposite faces of the two positioning grooves are arranged in a plane mode, the opposite faces of the two positioning grooves are arranged in an arc face mode, a frame sleeve is installed on the outer surface of the center column in a sliding mode, sliding sleeves are installed on the two sides of the frame sleeve in a sliding mode, L-shaped frames are fixedly installed on the edges of the upper ends of the sliding sleeves, and top rings are fixedly installed at the ends of the L-shaped frames. The positioning device can flexibly adapt to positioning of a square or circular mesh enclosure, the adaptability is effectively improved, the use requirement is met, meanwhile, use is convenient, and it is ensured that electric arcs cannot cause damage to a flexible sheet in the welding process.

Description

Technical Field

[0001] The present invention relates to the field of welding, and in particular to a welding positioning device for producing thermoelectric equipment. Background Art

[0002] Thermoelectric devices use the thermoelectric effect to convert heat into electricity. The screen is a crucial component, shielding and isolating hazardous areas such as those exposed to high temperatures, preventing accidental contact and minimizing safety hazards. During production, the screen is typically welded automatically using a welding robot.

[0003] When a welding robot performs automatic welding, a positioning device is required to position the mesh. However, meshes are generally shaped as either round or square, depending on the application. Existing positioning devices, however, are fixed in shape and cannot be adjusted. Therefore, they can only accommodate meshes of one shape, resulting in poor adaptability and difficulty meeting application requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a welding positioning device for thermoelectric equipment production.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a welding positioning device for the production of thermoelectric equipment, comprising a positioning seat, a center column is fixedly installed on the upper end of the positioning seat near the middle, a distribution slot plate is fixedly installed on the upper end of the center column, and a positioning slot is opened on the upper end of the distribution slot plate near the front and rear edges. The opposite surfaces of the two positioning slots are flat, and the opposite surfaces of the two positioning slots are arc-shaped. A frame sleeve is slidably installed on the outer surface of the center column, and a sliding sleeve is slidably installed on both sides of the frame sleeve. An L-shaped frame is fixedly installed at the upper end edge of the sliding sleeve, and a top ring is fixedly installed on the end of the L-shaped frame. An adjusting stud is rotatably installed between the side surface of the L-shaped frame and the upper end of the sliding sleeve, and a threaded cap is screwed on the outer surface of the adjusting stud, and a sheet seat is slidably installed above the sliding sleeve, and the threaded cap is connected to the sheet seat. A soft film is elastically installed on the inner side of the sheet seat, and an alignment clamp is installed on the rear end of the upper end of the positioning seat, and the alignment clamp is connected to the sliding sleeve.

[0006] Preferably, two sliding ears are symmetrically fixedly installed in the middle of the lower end of the sheet seat, and the two sliding ears are slidably installed on the front and rear end surfaces of the sliding sleeve respectively. The sliding ears are fixed to the threaded cap, and guide frames extend on both sides of the frame sleeve, and the sliding sleeve is slidably installed on the outer surface of the guide frame.

[0007] Preferably, the front and rear ends of the film seat are both penetrated by slotted rods that are slidably installed, the opposite ends of the two slotted rods are respectively fixed to the front and rear ends of the soft film, the opposite ends of the two slotted rods are coaxially inlaid with rod caps, and a tensioning spring is wound around the outside of the slotted rods, one end of the tensioning spring is fixed to the rod cap, and the other end of the tensioning spring is fixed to the film seat.

[0008] Preferably, the alignment clamping member includes a threaded rod rotatably mounted on the rear upper end of the positioning seat, a threaded sleeve is screwed on the outer surface of the threaded rod, a lower frame is fixedly mounted on the front end of the threaded sleeve, an upper frame is fixedly mounted on the upper end of the lower frame, a pressure seat is elastically mounted below the upper frame, a movable sleeve is fixedly mounted on the front end of the lower frame, and the movable sleeve is slidably mounted on the outer surface of the center column, and push sleeve frames are rotatably mounted on both sides of the movable sleeve, and the ends of the push sleeve frames are rotatably connected to the sliding sleeve.

[0009] Preferably, two limiting columns are symmetrically fixedly installed on the upper end of the pressure seat, and the upper frame is slidably installed on the outer surface of the limiting columns. The upper end of the limiting column is coaxially inlaid with an anti-drop cap No. 1, and the anti-drop cap No. 1 is attached to the upper end of the upper frame. An adaptive spring is wound around the outer side of the limiting column, and the lower end of the adaptive spring is fixed to the pressure seat, and the upper end of the adaptive spring is fixed to the lower end of the upper frame.

[0010] Preferably, a connecting frame is elastically mounted on the front upper end of the positioning seat, the upper rear end of the connecting frame is fixed to the frame sleeve, a lower pressure ear is extended from the lower edge of the rear end of the connecting frame, and an upper pressure ear is extended from the front end of the movable sleeve, and the upper pressure ear is located above the lower pressure ear.

[0011] Preferably, top caps are fixedly mounted on both side ends of the connecting frame, two supporting columns are symmetrically fixedly mounted on the front upper end of the positioning seat, and the two top caps are respectively slidably mounted on the outer surfaces of the two supporting columns.

[0012] Preferably, a boss is coaxially embedded in the lower part of the outer surface of the supporting column, a tensioning spring is wound around the outer side of the supporting column, the lower end of the tensioning spring is fixed to the upper end of the boss, the upper end of the tensioning spring is fixed to the lower end of the top cap, and a No. 2 anti-drop cap is coaxially embedded in the upper end of the supporting column, and the upper end of the top cap is fitted to the lower end of the No. 2 anti-drop cap.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By means of the tensioning spring, the soft film can be tightened so that the soft film is in a straight state, that is, the soft film forms a plane to adapt to the straight edge of the square frame to position and align the ribs. At the same time, the adjusting stud can be rotated to drive the threaded cap to move, and then drive the film seat to move. At this time, the sliding ear slides on the sliding sleeve to guide the film seat so that the soft film on the film seat can move toward the top ring and support the soft film through the top ring. At this time, the tensioning spring contracts and deforms, so that the soft film can gradually adhere to the outside of the top ring, so that under the shaping of the top ring, the soft film is transformed into an arc surface to adapt to the arc edge of the circular frame to position and align the ribs. In this way, it can flexibly adapt to the positioning of square or circular mesh covers, effectively improve the adaptability, and meet the needs of use.

[0015] 2. By rotating the threaded rod, the threaded sleeve can be driven to move, and then the movable sleeve and the upper frame can be driven to move downward. At this time, the movable sleeve that moves downward slides on the center column and drives the two push sleeve frames to move, so that the soft films on the two sliding sleeves can move toward each other to push multiple ribs so that the ends of the ribs can be aligned with the edges of the frame. After alignment, the pressure seat on the upper frame is just pressed on the ribs to clamp the positioned ribs and the frame. The process simultaneously completes the alignment and clamping operations, which effectively facilitates use.

[0016] 3. When the ribs and the frame are clamped and fixed, the upper pressure ear on the movable sleeve just contacts the lower pressure ear, and then the threaded rod continues to rotate. At this time, the movable sleeve and the upper frame continue to move downward. During this process, the pressure seat remains in a compressed state to adapt to the contraction and deformation of the spring to adapt to the continued downward movement of the upper frame. At the same time, the movable sleeve that continues to move downward pushes the lower pressure ear through the upper pressure ear, so that the connecting frame moves downward, and then drives the frame sleeve to slide downward on the center column, thereby driving the soft film to move downward, so that the soft film can be lower than the ribs, that is, keep the soft film away from the welding part to ensure that the arc will not cause damage to the soft film during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a welding positioning device for thermoelectric equipment production according to the present invention;

[0018] Figure 2 A partial view of a welding positioning device for producing thermoelectric equipment according to the present invention;

[0019] Figure 3 This is a schematic diagram of a movable sleeve of a welding positioning device for thermoelectric equipment production according to the present invention;

[0020] Figure 4 This is a schematic diagram of the top ring of a welding positioning device for thermoelectric equipment production according to the present invention;

[0021] Figure 5 This is a schematic diagram of a distribution slot plate of a welding positioning device for thermoelectric equipment production according to the present invention;

[0022] Figure 6 This is a schematic diagram of a sliding sleeve of a welding positioning device for thermoelectric equipment production according to the present invention;

[0023] Figure 7 This is a view of the positioning of the circular mesh cover according to the present invention;

[0024] Figure 8 This is a view showing the positioning of the square mesh cover according to the present invention.

[0025] In the figure: 1. positioning seat; 2. film seat; 3. soft film; 4. threaded rod; 5. distribution slot plate; 6. top ring; 7. threaded sleeve; 8. pressure seat; 9. upper frame; 10. lower frame; 11. sliding sleeve; 12. push sleeve frame; 13. center column; 14. bearing column; 15. movable sleeve; 16. connecting frame; 17. frame sleeve; 18. guide frame; 19. adjusting stud; 20. threaded cap; 21. sliding ear; 22. adaptive spring; 23. No. 1 anti-drop cap; 24. limiting column; 25. positioning slot; 26. L-shaped frame; 27. slot pull rod; 28. tensioning spring; 29. ​​rod cap; 30. lower pressure ear; 31. upper pressure ear; 32. convex seat; 33. tightening spring; 34. top cap; 35. No. 2 anti-drop cap; 36. round frame; 37. square frame; 38. tendon. DETAILED DESCRIPTION

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0027] like Figures 1-8The welding positioning device for thermoelectric equipment production shown in the figure includes a positioning seat 1, and a center column 13 is fixedly installed near the middle of the upper end of the positioning seat 1, and a distribution slot plate 5 is fixedly installed on the upper end of the center column 13. The center column 13 supports the distribution slot plate 5. The distribution slots on the distribution slot plate 5 can evenly distribute multiple reinforcement wires 38. Positioning grooves 25 are provided near the front and rear edges of the upper end of the distribution slot plate 5. The opposite surfaces of the two positioning grooves 25 are flat and can adapt to the edge plane of the square frame 37 for positioning. The opposite surfaces of the two positioning grooves 25 are arc-shaped and can adapt to the edge arc of the circular frame 36 for positioning. A frame sleeve 17 is slidably installed on the outer surface of the center column 13, and sliding sleeves 11 are slidably installed on both sides of the frame sleeve 17. The sliding sleeve 11 plays a guiding role. An L-shaped frame 26 is fixedly installed at the upper edge of the sliding sleeve 11, and a top ring 6 is fixedly installed at the end of the L-shaped frame 26. The L-shaped frame 26 plays a guiding role. The top ring 6 is fixed, and an adjusting stud 19 is rotatably installed between the side of the L-shaped frame 26 and the upper end of the sliding sleeve 11. The outer surface of the adjusting stud 19 is tightened with a threaded cap 20. A sheet seat 2 is slidably installed above the sliding sleeve 11. The threaded cap 20 is connected to the sheet seat 2. A soft film 3 is elastically installed on the inner side of the sheet seat 2. The adjusting stud 19 is rotated to drive the threaded cap 20 to move, and then drive the sheet seat 2 to move. At this time, the sliding ear 21 slides on the sliding sleeve 11. The film holder 2 is guided so that the soft film 3 on the film holder 2 can move toward the top ring 6 and support the soft film 3 through the top ring 6. At this time, the tensioning spring 28 contracts and deforms, allowing the soft film 3 to gradually adhere to the outside of the top ring 6. Under the shaping of the top ring 6, the soft film 3 is transformed into an arc surface, so that it can adapt to the arc edge of the circular frame 36 to position and align the ribs 38. An alignment clamp is installed at the rear end of the upper end of the positioning seat 1, and the alignment clamp is connected to the sliding sleeve 11.

[0028] Two sliding ears 21 are symmetrically fixedly installed in the middle of the lower end of the sheet holder 2. The two sliding ears 21 are respectively slidably installed on the front and rear end surfaces of the sliding sleeve 11. The sliding ears 21 play a role in guiding the sheet holder 2. The sliding ears 21 are fixed to the threaded cap 20. Guide frames 18 extend on both sides of the frame sleeve 17. The sliding sleeve 11 is slidably installed on the outer surface of the guide frame 18. The guide frame 18 plays a role in allowing the sliding sleeve 11 to slide.

[0029] The front and rear ends of the film holder 2 are both slidably installed with slotted rods 27. The groove design on the slotted rods 27 can prevent the slotted rods 27 from rotating. The opposite ends of the two slotted rods 27 are respectively fixed to the front and rear ends of the soft film 3. The opposite ends of the two slotted rods 27 are coaxially inlaid with rod caps 29. The outer side of the slotted rods 27 is wrapped with a tensioning spring 28. The rod cap 29 plays the role of being pushed by the tensioning spring 28. One end of the tensioning spring 28 is fixed to the rod cap 29, and the other end of the tensioning spring 28 is fixed to the film holder 2. The tensioning spring 28 can tighten the soft film 3 so that the soft film 3 is in a straight state, that is, the soft film 3 forms a plane to adapt to the straight edge of the square frame 37 to position and align the ribs 38.

[0030] The cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7 and the bottom of the cam 7 is screwed onto the top of the cam 7

[0031] Two limiting columns 24 are symmetrically fixed on the upper end of the pressure seat 8, and the upper frame 9 is slidably installed on the outer surface of the limiting columns 24. The limiting columns 24 guide the pressure seat 8. The upper end of the limiting column 24 is coaxially inlaid with an anti-slip cap 23 No. 1, and the anti-slip cap 23 fits the upper end of the upper frame 9. The anti-slip cap 23 prevents the limiting column 24 from separating from the upper frame 9. An adaptive spring 22 is wrapped around the outside of the limiting column 24. The lower end of the adaptive spring 22 is fixed to the pressure seat 8, and the upper end of the adaptive spring 22 is fixed to the lower end of the upper frame 9. The adaptive spring 22 can keep the pressure seat 8 in a compressed state while ensuring that the movable sleeve 15 and the upper frame 9 continue to move downward.

[0032] A connecting frame 16 is elastically installed on the front upper end of the positioning seat 1, and the upper rear end of the connecting frame 16 is fixed to the frame sleeve 17. A lower pressing ear 30 is extended at the lower edge of the rear end of the connecting frame 16. The connecting frame 16 plays the role of supporting the lower pressing ear 30, and an upper pressing ear 31 is extended at the front end of the movable sleeve 15. The upper pressing ear 31 is located above the lower pressing ear 30. The movable sleeve 15 that continues to move downward pushes the lower pressing ear 30 through the upper pressing ear 31, so that the connecting frame 16 moves downward, and then drives the frame sleeve 17 to slide downward on the center column 13, thereby driving the soft film 3 to move downward, so that the soft film 3 can be lower than the tendon 38, that is, the soft film 3 is kept away from the welding position.

[0033] Top caps 34 are fixedly installed on both side ends of the connecting frame 16, and the top caps 34 are pushed by the tightening springs 33. Two supporting columns 14 are symmetrically fixedly installed on the front upper end of the positioning seat 1. The two top caps 34 are respectively slidably installed on the outer surfaces of the two supporting columns 14, and the supporting columns 14 serve to guide the top caps 34.

[0034] A boss 32 is coaxially embedded in the lower part of the outer surface of the supporting column 14, and a tensioning spring 33 is wound around the outer side of the supporting column 14. The boss 32 supports the tensioning spring 33, and the lower end of the tensioning spring 33 is fixed to the upper end of the boss 32, and the upper end of the tensioning spring 33 is fixed to the lower end of the top cap 34. A No. 2 anti-slip cap 35 is coaxially embedded in the upper end of the supporting column 14, and the upper end of the top cap 34 is fitted to the lower end of the No. 2 anti-slip cap 35. The No. 2 anti-slip cap 35 prevents the supporting column 14 and the top cap 34 from separating, and the tensioning spring 33 allows the soft film 3 to move up and reset.

[0035] When positioning the square mesh cover, the square frame 37 can be placed on the distribution slot plate 5. At this time, the inner edge of the square frame 37 is fitted on the plane in the positioning slot 25 to limit the position. Then, the multiple ribs 38 are placed in the multiple distribution slots on the distribution slot plate 5 in sequence to evenly distribute the multiple ribs 38. Then, the threaded rod 4 is rotated to drive the threaded sleeve 7 to move, thereby driving the movable sleeve 15 and the upper frame 9 to move downward. At this time, the movable sleeve 15 that moves downward slides on the central column 13 and drives the two push sleeve frames 12 to move, so that the soft films 3 on the two sliding sleeves 11 can move toward each other to align the multiple ribs 38. Push so that the end of the rib 38 can be aligned with the edge of the square frame 37. When aligned, the pressure seat 8 on the upper frame 9 is just pressed on the rib 38 to clamp the positioned rib 38 and the square frame 37. At this time, the upper pressing ear 31 on the movable sleeve 15 is just in contact with the lower pressing ear 30. Then continue to rotate the threaded rod 4. At this time, the movable sleeve 15 and the upper frame 9 continue to move downward. During this process, the pressure seat 8 remains in a compressed state to adapt to the contraction deformation of the spring 22 to adapt to the continued downward movement of the upper frame 9. At the same time, the movable sleeve 15 that continues to move downward pushes the lower pressing ear 30 through the upper pressing ear 31. The connecting frame 16 is moved downward, thereby driving the frame sleeve 17 to slide downward on the central column 13, thereby driving the soft film 3 to move downward, so that the soft film 3 can be lower than the tendon 38, that is, the soft film 3 is kept away from the welding position, and then the two can be welded using a welding robot. When the circular mesh cover is positioned, the adjusting stud 19 can be rotated to drive the threaded cap 20 to move, thereby driving the film seat 2 to move. At this time, the sliding ear 21 slides on the sliding sleeve 11 to guide the film seat 2, so that the soft film 3 on the film seat 2 can move toward the top ring 6 and support the soft film 3 through the top ring 6. At this time, the tensioning spring 28 is compressed. The shrinkage deformation allows the soft film 3 to gradually adhere to the outer side of the top ring 6, so that the soft film 3 is transformed into an arc surface under the shaping of the top ring 6, and then the circular frame 36 can be placed on the distribution slot plate 5. At this time, the outer edge of the circular frame 36 is fitted on the arc surface in the positioning groove 25 for limiting. Then, the multiple ribs 38 are placed in the multiple distribution grooves on the distribution slot plate 5 in turn to evenly distribute the multiple ribs 38. Then, the above steps can be repeated to rotate the threaded rod 4, align the edges of the multiple ribs 38 and the circular frame 36, and clamp the two to be welded by the welding robot.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding positioning device for thermoelectric equipment production, comprising a positioning seat (1), characterized in that: A center column (13) is fixedly installed near the middle of the upper end of the positioning seat (1), and a distribution slot plate (5) is fixedly installed on the upper end of the center column (13). Positioning grooves (25) are provided on the upper end of the distribution slot plate (5) near the front and rear edges. The opposite surfaces of the two positioning grooves (25) are arranged in a plane, and the opposite surfaces of the two positioning grooves (25) are arranged in an arc surface. A frame sleeve (17) is slidably installed on the outer surface of the center column (13). Slide sleeves (11) are slidably installed on both sides of the frame sleeve (17). L is fixedly installed on the upper edge of the slide sleeve (11). An L-shaped frame (26) is fixedly mounted with a top ring (6) at the end of the L-shaped frame (26), an adjusting stud (19) is rotatably mounted between the side surface of the L-shaped frame (26) and the upper end of the sliding sleeve (11), a threaded cap (20) is screwed onto the outer surface of the adjusting stud (19), a sheet seat (2) is slidably mounted above the sliding sleeve (11), the threaded cap (20) is connected to the sheet seat (2), a soft sheet (3) is elastically mounted on the inner side of the sheet seat (2), an alignment clamp is mounted on the rear portion of the upper end of the positioning seat (1), and the alignment clamp is connected to the sliding sleeve (11).

2. A welding positioning device for thermoelectric equipment production according to claim 1, characterized in that: Two sliding ears (21) are symmetrically fixedly installed in the middle of the lower end of the sheet seat (2), and the two sliding ears (21) are respectively slidably installed on the front and rear end surfaces of the sliding sleeve (11). The sliding ears (21) are fixed to the threaded cap (20). Guide frames (18) are extended on both sides of the frame sleeve (17), and the sliding sleeve (11) is slidably installed on the outer surface of the guide frame (18).

3. The welding positioning device for thermoelectric equipment production according to claim 1, characterized in that: The front and rear ends of the film seat (2) are both slidably installed with groove pull rods (27), and the opposite ends of the two groove pull rods (27) are respectively fixed to the front and rear ends of the soft film (3), and the opposite ends of the two groove pull rods (27) are coaxially inlaid with rod caps (29). A tensioning spring (28) is wound around the outer side of the groove pull rod (27), one end of the tensioning spring (28) is fixed to the rod cap (29), and the other end of the tensioning spring (28) is fixed to the film seat (2).

4. The welding positioning device for thermoelectric equipment production according to claim 1, characterized in that: The alignment clamping member comprises a threaded rod (4) rotatably mounted on the rear portion of the upper end of the positioning seat (1); a threaded sleeve (7) is screwed onto the outer surface of the threaded rod (4); a lower frame (10) is fixedly mounted on the front end of the threaded sleeve (7); an upper frame (9) is fixedly mounted on the upper end of the lower frame (10); a pressure seat (8) is elastically mounted below the upper frame (9); a movable sleeve (15) is fixedly mounted on the front end of the lower frame (10); the movable sleeve (15) is slidably mounted on the outer surface of the center column (13); push sleeve frames (12) are rotatably mounted on both sides of the movable sleeve (15); and the ends of the push sleeve frames (12) are rotatably connected to the sliding sleeve (11).

5. The welding positioning device for thermoelectric equipment production according to claim 4, characterized in that: Two limiting columns (24) are symmetrically fixedly installed on the upper end of the pressure seat (8), and the upper frame (9) is slidably installed on the outer surface of the limiting columns (24). The upper end of the limiting column (24) is coaxially inlaid with a No. 1 anti-drop cap (23), and the No. 1 anti-drop cap (23) is attached to the upper end of the upper frame (9). An adaptive spring (22) is wound around the outer side of the limiting column (24), and the lower end of the adaptive spring (22) is fixed to the pressure seat (8), and the upper end of the adaptive spring (22) is fixed to the lower end of the upper frame (9).

6. The welding positioning device for thermoelectric equipment production according to claim 4, characterized in that: A connecting frame (16) is elastically mounted on the front upper end of the positioning seat (1), the upper rear end of the connecting frame (16) is fixed to the frame sleeve (17), a lower pressing ear (30) is extended from the lower edge of the rear end of the connecting frame (16), and an upper pressing ear (31) is extended from the front end of the movable sleeve (15), and the upper pressing ear (31) is located above the lower pressing ear (30).

7. A welding positioning device for thermoelectric equipment production according to claim 6, characterized in that: Top caps (34) are fixedly mounted on both side ends of the connecting frame (16), two supporting columns (14) are symmetrically fixedly mounted on the front upper end of the positioning seat (1), and the two top caps (34) are respectively slidably mounted on the outer surfaces of the two supporting columns (14).

8. The welding positioning device for thermoelectric equipment production according to claim 7, characterized in that: A convex seat (32) is coaxially embedded in the lower part of the outer surface of the supporting column (14), a tensioning spring (33) is wound around the outer side of the supporting column (14), the lower end of the tensioning spring (33) is fixed to the upper end of the convex seat (32), the upper end of the tensioning spring (33) is fixed to the lower end of the top cap (34), and a No. 2 anti-drop cap (35) is coaxially embedded in the upper end of the supporting column (14), and the upper end of the top cap (34) is fitted to the lower end of the No. 2 anti-drop cap (35).

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