Gas welding equipment

Abstract

This utility model discloses an inflatable welding device, including an operating table, a fixture mechanism, and an inflatable welding mechanism. In this solution, the lower pressing mechanism cooperates with the upper lifting mechanism to clamp and fix the core. The first shifting mechanism moves the slide to make the clamped core abut against the end of the inflatable welding mechanism. The air inlet valve is opened to inflate through the end. The second shifting mechanism moves the second copper rod to abut against the welding stud at the core. Welding can be completed after power is applied. The entire welding operation process is simplified, making it convenient to operate. The automation level of the equipment is improved, which helps to improve work efficiency and welding consistency.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to an gas-filled welding device. Background Technology

[0002] In the repair and manufacturing process of watch movements, gas-filled welding is a crucial step. This step involves filling the rear barrel of the movement with high-pressure gas and then welding the gas inlet shut after filling. The quality of this process directly affects the safety of the movement. If the welding quality is substandard, there will be a risk of gas leakage, which will affect the overall performance and lifespan of the movement.

[0003] However, current equipment and operating methods used in gas welding of movement components have several shortcomings. For example, some equipment is overly cumbersome to operate, requiring manual intervention in multiple areas, resulting in low efficiency. Some equipment can only handle a limited number of movement sizes, exhibiting poor adaptability and requiring improvement. Utility Model Content

[0004] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution: This application discloses an inflatable welding apparatus, including an operating table, a fixture mechanism, and an inflatable welding mechanism. The fixture mechanism includes a slide, a first shifting mechanism, an upper lifting mechanism, and a lower pressing mechanism. The first shifting mechanism drives the slide to move toward the inflatable welding mechanism. The slide is provided with a slot for insertion and mating with the tail end of the movement. The upper lifting mechanism and the lower pressing mechanism are provided on the slide in front of the slot. The upper lifting mechanism includes a top seat, an elastic element, a first copper rod, and a guide cylinder. The guide cylinder is sleeved on the first copper rod and is fixed to the top seat. The first copper rod is elastically extended and retracted to the slide in the longitudinal direction through the elastic element, and the end of the first copper rod protrudes outward from the bottom wall of the groove at the top seat for inserting the movement. The lower pressing mechanism is provided above the top seat, and the lower pressing mechanism cooperates with the upper lifting mechanism to clamp the movement between them. The gas-filled welding mechanism includes an end head, a second copper rod, a guide tube, an air inlet valve, and a second shifting mechanism. The guide tube and the end head are both sleeved on the second copper rod, and the guide tube is connected to the operating table. An end head is provided at the end of the guide tube, and an air inlet valve communicating with its cavity is provided on the guide tube. The second shifting mechanism drives the second copper rod to move relative to the guide tube. The first shifting mechanism drives the slide to make the core held by the upper pushing mechanism and the lower pressing mechanism abut against the end head. The second shifting mechanism drives the second copper rod to move so that its end protrudes outward from the end head.

[0005] This solution uses a lower pressing mechanism in conjunction with an upper lifting mechanism to clamp and fix the mechanism. A shifting mechanism moves the slide to bring the clamped mechanism into contact with the end of the inflatable welding mechanism. The air inlet valve is opened to inflate the mechanism through the end. A second shifting mechanism moves a copper rod to contact the welding stud at the mechanism. Welding is completed after power is applied. The entire welding process is simplified, making it easier to operate. The automation level of the equipment is improved, which helps to increase work efficiency and welding consistency.

[0006] Furthermore, the pressing mechanism includes a handle, a pressure rod, a pressure column, and a mounting base. The middle position of the handle is hinged to the mounting base to rotate in the longitudinal plane. The tail end of the handle is hinged to the tail end of the pressure rod to rotate in the longitudinal plane. The tail end of the pressure rod is hinged to the mounting base to rotate in the longitudinal plane. A pressure column is longitudinally arranged at the head end of the pressure rod. Rotating the handle causes the pressure rod to swing up and down, simultaneously moving the pressure column up and down. Rotating the handle completes the up and down movement of the pressure column, which is convenient for operation.

[0007] Furthermore, a waist hole is provided at the first end of the pressure rod along the length direction, and the first end of the pressure column passes through the waist hole and the two slide together. Pressure plates are slidably connected to the pressure column at the upper and lower openings of the waist hole and threaded nuts are connected. Tightening the nuts causes the two pressure plates to clamp the pressure rod in the middle to fix the pressure column, which facilitates the adjustment of the position of the pressure column to adapt to the pressing of movements of different diameters.

[0008] Furthermore, the shifting mechanism includes a telescopic cylinder, a connecting plate, a stamping end, a support tube, and a connecting end. The moving end of the telescopic cylinder is connected to the longitudinally arranged connecting plate. The connecting plate is provided with a connecting end. The stamping end is embedded in the opening of the first end of the support tube, and the tail end of the support tube is fixed on the connecting end. With this structure, the support tube can be replaced according to the different movement types. In use, the stamping end transmits the stamping force, thereby causing the slide portion carrying the movement to move.

[0009] Furthermore, the slide includes a linear guide rod, a guide rod support, a first connecting plate, a second connecting plate, and a third connecting plate. The guide rod support is provided on the operating table, and the two guide rod supports are connected by a linear guide rod. The first connecting plate, the second connecting plate, and the third connecting plate are all slidably connected to the linear guide rod. The first connecting plate is provided with an upper lifting mechanism and a lower pressing mechanism. The second connecting plate, located behind the first connecting plate, is provided with a positioning block and a slot. The third connecting plate is connected to the moving end of the first shifting mechanism. In this solution, the slide adopts a split structure to better connect to movements of different lengths and improve flexibility.

[0010] Furthermore, the second displacement mechanism includes a second telescopic cylinder and a contact stamping head. The contact stamping head is provided at the moving end of the second telescopic cylinder and is connected to the second copper rod, which simplifies the connection structure and facilitates assembly.

[0011] Furthermore, a support base is provided on the operating platform, and a guide tube is provided on the support base. A sealing ring 1 is provided on the cavity wall of the guide tube to seal the gap between the copper rod 2 and the cavity wall of the guide tube. A sealing ring 2 is provided on the first end face of the end, and a sealing ring 3 is provided on the first end cavity wall of the guide tube to seal the gap between the cavity wall and the peripheral wall of the end. The addition of sealing rings helps to improve the sealing performance during the inflation process.

[0012] Furthermore, it also includes a fixed seat. The fixed seat is provided on the operating table, and an elastic element is provided inside the fixed seat. The copper rod is slidably connected to the fixed seat and the two are connected by the elastic element. Under the elastic force of the elastic element, the copper rod forms an elastic telescopic connection with the fixed seat in the longitudinal direction. The fixed seat is added to facilitate docking with the elastic element and facilitate assembly.

[0013] Furthermore, an adjusting nut is provided on the guide cylinder. The adjusting nut is threadedly connected to the copper rod. The adjusting nut is located between the fixed seat and the top seat. The upper and lower positions of the top seat can be adjusted by turning the adjusting nut, thereby adjusting the upper and lower positions of the mechanism supported by the top seat. This facilitates the connection between the welding pins at different types of mechanisms and the copper rods at the gas-filling welding mechanism, improving adaptability.

[0014] Furthermore, it also includes a control terminal and a foot pedal mechanism. The control terminal is connected to both the first and second shifting mechanisms to control them to perform predetermined actions. The foot pedal mechanism is connected to the air intake valve to control the on / off state. The addition of the control terminal and foot pedal mechanism facilitates operation.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The structural composition of this utility model for gas-filled welding helps to simplify the operation process, improve work efficiency, and facilitate operation. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the gas-filled welding device in Example 1; Figure 2 This is a schematic diagram of the gas-filled welding device after the protective cover is installed in Example 1; Figure 3 This is a schematic diagram of the gas-filled welding device after the protective cover is installed in Example 1; Figure 4 This is a schematic diagram of the cross-sectional structure of the gas-filled welding device in Example 1; Figure 5This is a schematic diagram of the installation structure of telescopic cylinder one; Figure 6 This is a schematic diagram of the pressing mechanism; The attached figures are labeled as follows: 1. Operating platform; 2. Fuma wheel; 3. Support plate; 4. Cylinder connecting block; 5. Telescopic cylinder one; 6. Guide rod support; 7. Linear guide rod; 8. Linear bearing; 9. Connecting plate one; 10. Guide slide rod; 11. Guide cylinder; 12. Adjusting nut; 13. Top seat; 14. Fixed seat; 15. Elastic element; 16. Spring disc; 17. Copper rod one; 18. Mounting seat; 19. Pressing mechanism; 20. Height measuring block; 21. Connecting plate two; 22. Positioning block; 23. Connecting plate three; 24. Connecting plate; 25. Triangular support rib; 26. Connecting end; 27. Support tube; 28. 190. Stamping end; 29. ​​Triangular support plate; 30. Cylinder connecting plate; 31. Support connecting plate; 32. Telescopic cylinder two; 33. Contact stamping head; 34. Support seat; 35. Guide tube; 36. Intake valve; 37. End; 38. Copper rod two; 39. Sealing ring three; 40. Set screw; 41. Protective sleeve; 42. Welding trigger button; 43. Trigger button one; 44. Trigger button two; 45. Foot pedal mechanism; 46. Mechanism; 190. Mounting base; 191. Handle; 192. Pressure rod; 193. Waist hole; 194. Nut; 195. Pressure plate; 196. Pressure column. Detailed Implementation

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

[0018] Example 1 like Figures 1-5 As shown, in this example, the gas welding device includes an operating table 1, a jig mechanism, and a gas welding mechanism. The operating table has a common configuration, specifically including a frame, a support plate 3, and a cabinet door. The support plate 3 is installed at the top of the frame, and the cabinet door is hinged to the side of the frame to facilitate the installation or maintenance of components inside the cavity. Casters can be installed at the four corners of the frame for easy movement.

[0019] In this example, a jig mechanism and an inflatable welding mechanism are installed at intervals on the support plate 3. The jig mechanism includes a slide, a first shifting mechanism, an upper lifting mechanism, and a lower pressing mechanism. The first shifting mechanism drives the slide to move toward the inflatable welding mechanism. A slot is formed on the slide to fit into the tail end of the mechanism, and the upper lifting mechanism and the lower pressing mechanism are installed on the slide in front of the slot. For the slide structure, common slide configurations can be selected from the market according to requirements. The structure shown in this example is preferred. Specifically, the slide includes a linear guide rod 7, a guide rod support 6, a first connecting plate 9, a second connecting plate 21, and a third connecting plate 23. The guide rod support 6 is installed on the support plate 3 in the operating table 1. A common configuration can be selected for the guide rod support. It is fixed with bolts to form a clamp. The two guide rod supports 6 are connected by a linear guide rod 7, and the end of the linear guide rod is clamped by the guide rod support. Connecting plate 1 (9), connecting plate 2 (21), and connecting plate 3 (23) are all slidably connected to linear guide rod 7 via linear bearing 8. Connecting plate 1 (9) is equipped with an upper lifting mechanism and a lower pressing mechanism. Connecting plate 2 (21), located behind connecting plate 1 (9), has a fixed positioning block 22 with a formed groove. The groove opening faces upward to facilitate insertion of the movement tail end. Connecting plate 3 (23) is connected to the moving end of shifting mechanism 1, and the distance between connecting plate 1 and connecting plate 2 can be adjusted to better accommodate movements of different lengths.

[0020] In this example, the upper lifting mechanism includes a top seat 13, an elastic element 15, a copper rod 17, and a guide cylinder 11. The top seat is V-shaped. A guide slide rod 10 is installed longitudinally on the support plate 3. The guide slide rod 10 extends into the guide hole formed on the top seat 13 to guide the movement of the top seat 13. The guide cylinder 11 is sleeved on the copper rod 17, and the end of the guide cylinder 11 extends into the longitudinally formed cavity of the top seat 13 and is fixed. The head end of the copper rod 17 extends out from the end of the guide cylinder 11 and protrudes outward at the bottom wall of the V-shaped groove of the top seat 13. The tail end of the copper rod 17 extends from the guide cylinder 11 and is elastically connected to the connecting plate 9 in the slide block in the longitudinal direction through the elastic element 15. Specifically, a fixed seat 14 is added, and the elastic element 15 is installed in the cavity of the fixed seat 14. For example, a spring is used as the elastic element. The copper rod 17 is slidably connected to the fixed seat 14 and the spring is sleeved on the copper rod 17. The spring head end abuts against the spring disc 16 installed at the tail end of the copper rod and the spring tail end abuts against the cavity wall of the fixed seat. Under the elastic force of the elastic element, the copper rod 17 forms an elastic telescopic connection with the fixed seat in the longitudinal direction.

[0021] An adjusting nut 12 can also be added to the guide cylinder 11. For example, the adjusting nut 12 can be fixed in the middle of the guide cylinder 11, and it is threadedly connected to the copper rod 17. The adjusting nut 12 is located between the fixed seat 14 and the top seat 13. During use, the adjusting nut can be turned to adjust the vertical position of the top seat, thereby adjusting the vertical position of the mechanism supported by the top seat, facilitating the connection between the welding pins of different types of mechanisms and the copper rods of the gas-filling welding mechanism. For easier adjustment, a height-measuring block 20 can also be installed on one side of the top seat 13, with dimensions marked on it.

[0022] In this example, the pressing mechanism 19 is located above the top seat 13. The pressing mechanism, in conjunction with the upper pressing mechanism, clamps the movement 46 between them. Figure 6 As shown, the pressing mechanism 19 includes a handle 191, a pressing rod 192, a pressing column 196, and a mounting base 190. The mounting base 190 is fixed to the side of the top seat 13. The middle position of the rod-shaped handle 191 is hinged to the top of the mounting base 190 to rotate in the longitudinal plane. The tail end of the handle 191 is hinged to the tail end of the pressing rod 192 to rotate in the longitudinal plane. The tail end of the pressing rod 192 is hinged to the top of the mounting base 190 to rotate in the longitudinal plane, and the hinge point is located below the hinge point between the handle and the pressing rod. The pressing column 196 is longitudinally arranged at the head end of the pressing rod 192. When in use, if the handle is rotated, the pressing rod swings up and down, and the pressing column moves up and down simultaneously. Rotating the handle can complete the up and down movement of the pressing column. When the pressing column moves down, it cooperates with the top seat to clamp the middle mechanism.

[0023] A waist hole 193 can also be formed along the length direction at the first end of the pressure rod 192. The first end of the pressure column 196 passes through the waist hole 193 and the two slide together. The pressure plate 195 is slidably connected to the pressure column 196 at the upper and lower openings of the waist hole 193 and threadedly connected to the nut 194. Tightening the nut causes the two nuts to press the two pressure plates in the middle, and then the two pressure plates clamp the pressure rod in the middle to fix the pressure column. The nut can be loosened to adjust the position of the pressure column to adapt to the pressing of different diameter movements.

[0024] For the first shifting mechanism, various options such as servo screws and telescopic cylinders can be selected from the market according to requirements. In this example, the first shifting mechanism includes a telescopic cylinder 5, a connecting plate 24, a stamping end 28, a support tube 27, and a connecting end 26. The telescopic cylinder 5 is fixed to the bottom surface of the support plate 3, and its moving end is connected to the longitudinally arranged connecting plate 24. The first end of the connecting plate 24 protrudes outward from the top surface of the connecting plate 3 23 and horizontally fixes the connecting end 26. The stamping end 28 is embedded in the opening of the first end of the support tube 27, and the tail end of the support tube 27 is fitted onto the connecting end 26 and fixed. The support tube can be replaced as needed during use. In use, the telescopic cylinder drives the stamping end to move, so that the stamping end abuts against the positioning block, thereby moving the mechanism carried on the connecting plate 1 and connecting plate 2. To improve the stability of the structure, triangular support ribs can also be added, such as fixing triangular support ribs between the bottom surfaces of the connecting plate and connecting plate 3.

[0025] In this example, the gas-filled welding mechanism includes an end 37, a second copper rod 38, a guide tube 35, an air inlet valve 36, and a second shifting mechanism. The guide tube 35 and the end 37 are both fitted onto the second copper rod 38 and can be secured by tightening screws 40 radially into the guide tube to abut against the peripheral wall of the end. A support base 34 is fixed on the support plate 3 in the operating table 1. The guide tube 35 is horizontally fixed at the top of the support base 34. The end 37 is fixed at the end of the guide tube 35, and an air inlet valve 36 communicating with its cavity is installed on the guide tube. The second shifting mechanism drives the second copper rod to move relative to the guide tube. In use, if the first shifting mechanism drives the slide to make the core held by the upper push mechanism and the lower press mechanism abut against the end, the second shifting mechanism drives the second copper rod to move so that its end protrudes outward from the end to abut against the welding needle at the core. Welding can be performed after power is applied.

[0026] Preferably, a sealing ring 1 is installed on the wall of the guide tube cavity to seal the gap between the copper rod 2 and the guide tube cavity wall, such as at the end of the guide tube cavity wall. A sealing ring 2 is installed at the first end face of the end. When the end abuts against the mechanism, the sealing ring 2 improves the sealing performance. A sealing ring 39 can also be installed at the first end cavity wall of the guide tube cavity to seal the gap between the cavity wall and the end peripheral wall. Adding sealing rings helps to improve the sealing performance during inflation.

[0027] For the second shifting mechanism, common types such as servo screws and telescopic cylinders are all acceptable. In this example, the second shifting mechanism is a telescopic cylinder, specifically including a telescopic cylinder 32 and a contact punch head 33. A support connecting plate 31 and a cylinder connecting plate 30 are fixed on the support plate in the operating table. The support connecting plate and the cylinder connecting plate are connected to form an L-shape. A triangular support plate 29 is fixed between the support connecting plate 31 and the cylinder connecting plate 30. The telescopic cylinder 32 is fixed on the cylinder connecting plate. The contact punch head 33 is fixed at the moving end of the telescopic cylinder 33 and is connected to the copper rod 38.

[0028] A control terminal and foot pedal mechanism 45 can also be added. For example, a protective sleeve 41 can be added to the gas-filling welding mechanism. The end of the protective sleeve is formed with an opening for the movement to enter. If the control terminal is installed on the protective sleeve, and the foot pedal mechanism is placed outside the operating table, the foot pedal mechanism is connected to the air intake valve to control the on / off state. The control terminal is connected to the corresponding telescopic cylinders in the first and second shift mechanisms to execute the predetermined action.

[0029] The usage process is as follows: The user first selects the corresponding length of the support tube 27 based on the type of movement 46.

[0030] When the user presses the trigger button 43 on the control end to operate the telescopic cylinder, the connecting rod of the telescopic cylinder extends, causing the stamping end 28 to move to the rightmost side of the cylinder's stamping stroke.

[0031] Place the movement 46 stably in the V-groove of the V-shaped top seat 13, with the tail end of the movement 46 in the slot of the positioning block 22. Move the positioning block to make it a suitable distance away from the stamping end.

[0032] The user operates the pressing mechanism 19 to reliably press the movement 46.

[0033] Operate the adjusting nut 12 to make the welding stud on the head of the movement 46 concentric with the end 37 of the gas-filling welding mechanism.

[0034] Press the trigger button 43 again, and the connecting rod of the telescopic cylinder 5 will retract, causing the stamping end 28 to move to the left and contact the positioning block 22, further causing the movement 46 to move to the left until the head of the movement 46 is in close contact with the end 37.

[0035] Press the pedal at position 45 of the foot pedal mechanism to open the air intake valve. The external air supply mechanism will then fill the guide tube with air through the air intake valve, simultaneously filling the mechanism head 46 with high-pressure gas. Observe the pressure gauge. Once the predetermined pressure value is reached, release the pedal to stop the inflation.

[0036] After inflation is complete, press the trigger button 44 to operate the telescopic cylinder 32. The telescopic cylinder 32 will then operate, causing the copper rod 38 to contact the welding stud on the head of the mechanism 46, forming a closed circuit. Press the welding trigger button 42 on the control end to energize the welding. After a period of time, press the welding trigger button 42 again to de-energize. After the welding stud melts and cools, it will reliably seal the compressed gas filled into the head of the mechanism 46.

[0037] After the equipment is filled with gas and the welding operation is completed, press trigger button 1 (43) and trigger button 2 (44) to reset it.

[0038] Release the pressing mechanism 19 and remove the core 46 to complete the entire gas-filled welding process.

[0039] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A gas-filled welding device comprising an operating table (1), a jig mechanism, a gas-filled welding mechanism, characterized in that, The fixture mechanism includes a slide, a shifting mechanism, an upper lifting mechanism, and a lower pressing mechanism. The shifting mechanism drives the slide to move toward the gas-filling welding mechanism. The slide is provided with a slot for insertion and engagement with the tail end of the movement. The upper lifting mechanism and the lower pressing mechanism are provided on the slide in front of the slot. The upper lifting mechanism includes a top seat (13), an elastic element (15), a copper rod (17), and a guide cylinder (11). The guide cylinder (11) is sleeved on the copper rod (17) and fixed to the top seat (13). The copper rod (17) is elastically extended and retracted to the slide in the longitudinal direction through the elastic element (15), and the end of the copper rod (17) protrudes outward from the bottom wall of the groove at the top seat (13) for inserting the movement. The lower pressing mechanism is provided above the top seat (13). The lower pressing mechanism and the upper lifting mechanism cooperate to clamp the movement (46) between them. The gas-filled welding mechanism includes an end (37), a second copper rod (38), a guide tube (35), an air inlet valve (36), and a second shifting mechanism. The guide tube (35) and the end (37) are both sleeved on the second copper rod (38), and the guide tube (35) is connected to the operating table (1). The end (37) is provided at the end of the guide tube (35), and the air inlet valve (36) is provided on the guide tube (35) and communicates with its cavity. The second shifting mechanism drives the second copper rod (38) to move relative to the guide tube (35). The first shifting mechanism drives the slide to make the core held by the upper push mechanism and the lower press mechanism abut against the end. The second shifting mechanism drives the second copper rod to move so that its end protrudes outward from the end.

2. The gas-filled welding apparatus as described in claim 1, characterized in that: The pressing mechanism includes a handle (191), a pressure rod (192), a pressure column (196), and a mounting base (190). The middle position of the handle (191) is hinged to the mounting base (190) to rotate in the longitudinal plane. The tail end of the handle (191) is hinged to the tail end of the pressure rod (192) to rotate in the longitudinal plane. The tail end of the pressure rod (192) is hinged to the mounting base (190) to rotate in the longitudinal plane. The pressure column (196) is longitudinally arranged at the head end of the pressure rod (192). Rotating the handle causes the pressure rod to swing up and down, and simultaneously causes the pressure column to move up and down.

3. The gas-filled welding apparatus as described in claim 2, characterized in that: The pressure rod (192) has a waist hole along its length at the first end. The first end of the pressure column (196) passes through the waist hole and the two slide together. The pressure plate (195) is slidably connected to the pressure column (196) at the upper and lower openings of the waist hole and is threadedly connected to the nut (194). Tightening the nut causes the two pressure plates to clamp the pressure rod in the middle to fix the pressure column.

4. The gas-filled welding apparatus as described in claim 1, characterized in that: The displacement mechanism includes a telescopic cylinder (5), a connecting plate (24), a stamping end (28), a support tube (27), and a connecting end (26). The moving end of the telescopic cylinder (5) is connected to the longitudinally arranged connecting plate (24). The connecting end (26) is provided on the connecting plate (24). The stamping end (28) is embedded in the first end of the support tube (27), and the tail end of the support tube (27) is fixed on the connecting end (26).

5. The gas-filled welding apparatus as described in claim 1, characterized in that: The slide includes a linear guide rod (7), a guide rod support (6), a connecting plate one (9), a connecting plate two (21), and a connecting plate three (23). The operating table (1) is provided with a guide rod support (6), and the two guide rod supports (6) are connected by a linear guide rod (7). The connecting plate one (9), the connecting plate two (21), and the connecting plate three (23) are all slidably connected to the linear guide rod (7). The connecting plate one (9) is provided with an upper lifting mechanism and a lower pressing mechanism. The connecting plate two (21) located behind the connecting plate one (9) is provided with a positioning block (22), and the positioning block (22) is provided with a slot. The connecting plate three (23) is connected to the moving end of the shifting mechanism one.

6. The gas-filled welding apparatus as described in claim 1, characterized in that: The second shifting mechanism includes a second telescopic cylinder (32) and a contact punch head (33). The contact punch head (33) is provided at the moving end of the second telescopic cylinder (32) and is connected to the second copper rod (38).

7. The gas-filled welding apparatus as described in claim 1, characterized in that: The operating table (1) is provided with a support base (3) and a guide tube (35) is provided on the support base (3). A sealing ring (1) is provided on the cavity wall of the guide tube (35) to seal the gap between the copper rod (2) and the cavity wall of the guide tube. A sealing ring (2) is provided on the first end face of the end. A sealing ring (39) is provided on the first end cavity wall of the guide tube (35) to seal the gap between the cavity wall and the end peripheral wall.

8. The gas-filled welding apparatus as described in claim 1, characterized in that: It also includes a fixed seat (14), a fixed seat (14) is provided on the operating table (1), an elastic element (15) is provided in the fixed seat (14), the copper rod (17) is slidably connected to the fixed seat (14) and the two are connected by the elastic element (15), and under the elastic force of the elastic element, the copper rod (17) forms an elastic telescopic connection with the fixed seat in the longitudinal direction.

9. The gas-filled welding apparatus as described in claim 8, characterized in that: An adjusting nut (12) is provided on the guide cylinder (11). The adjusting nut (12) is threadedly connected to the copper rod (17). The adjusting nut (12) is located between the fixed seat (14) and the top seat (13).

10. The gas-filled welding apparatus as described in claim 1, characterized in that: It also includes a control terminal and a foot pedal mechanism (45). The control terminal is connected to both the first and second shifting mechanisms to control them to perform predetermined actions. The foot pedal mechanism (45) is connected to the air intake valve (36) to control the on / off state.

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