A pneumatic tooling for stud displacement welding

Abstract

The present invention discloses a pneumatic tooling for stud displacement welding, including an air path structure and a mechanical structure. The mechanical structure includes a frame, and positioner connection plates are arranged at the front and rear ends of the frame. The left part of the frame is connected with welding A assembly, welding A assembly and welding B assembly in sequence from bottom to top. The left parts of welding A assembly and welding B assembly are both connected with side pneumatic clamping structures; the upper end frame of welding B assembly is connected with end face pneumatic clamping mechanism; the rear frame of welding A assembly is connected with end face pneumatic clamping mechanism; the right side of the frame is symmetrically provided with welding A assembly, welding B assembly, end face pneumatic clamping mechanism and side face pneumatic clamping structure. The present invention has a novel and ingenious structure, and the workpiece is clamped by pneumatic tooling, with a high degree of automation, displacement welding, and convenient operation, which greatly reduces labor intensity, improves work efficiency and welding quality, and reduces production costs.

Description

Technical Field

[0001] The invention relates to the field of welding tools, and in particular to a stud displacement welding pneumatic tool. Background Art

[0002] The battery box used in the automotive industry has six battery modules. Studs need to be welded on the battery box. The studs are used to install the battery modules. Four studs are required on a single module. The existing technology for welding studs uses manual welding tooling A and tooling B. When welding, the studs are first placed on the battery box, and then the worker manually lifts the tooling to align the holes for clamping, and inserts the guide pins for welding. Tooling A weighs 8kg, and tooling B weighs 7kg. In addition, the worker must bend over during the welding process, which is labor-intensive, unstable welding quality, and low work efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a pneumatic tooling for stud displacement welding.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the present invention is:

[0005] The pneumatic tooling for stud displacement welding includes an air path structure and a mechanical structure, and is characterized in that: the mechanical structure includes a frame, and the front and rear ends of the frame are provided with positioner connection plates, and the left part of the frame is connected with welding A assembly, welding A assembly and welding B assembly in sequence from bottom to top, and the left parts of welding A assembly and welding B assembly are both connected with side pneumatic clamping structures; the upper end frame of the welding B assembly is connected with an end face pneumatic clamping mechanism; the rear frame of the rear welding A assembly is connected with an end face pneumatic clamping mechanism Mechanism; the frame is also connected to a number of nylon limit blocks for limiting the workpiece; the right side of the frame is symmetrically provided with welding A assembly, welding B assembly, end face pneumatic clamping mechanism, and side face pneumatic clamping structure; the left side of the frame is connected to a main positioning pin for positioning the workpiece, and the right side of the frame is connected to a sliding pin structure for positioning the workpiece; the welding A assembly and the welding B assembly are connected to a number of guide rods through nuts, and the lower part of the guide rods passes through the frame; the welding B assembly has the same structure as the welding A assembly but different sizes.

[0006] Preferably: the welding A assembly includes a positioning plate and a bushing, and two stud clamping mechanisms are respectively connected to the front and rear sides of the positioning plate, a round pin structure is connected to the bottom of the positioning plate at the left end of the front side of the positioning plate, and a diamond pin structure is connected to the bottom right side of the positioning plate; the stud clamping mechanism includes a base connected to the positioning plate, and the side of the base is vertically connected to a mini cylinder Qc and a push rod seat, the upper end of the mini cylinder Qc is connected to a push rod through a connecting piece A, and the push rod passes through the push rod seat to facilitate tightening the stud to be welded, and a hand valve is also connected to the base; the diamond pin structure includes a cylinder seat B connected to the positioning plate, and the top of the cylinder Qb is connected to a diamond pin through a connecting piece; the round pin structure includes a cylinder seat C connected to the positioning plate, and the top of the cylinder Qb is connected to a round pin through a connecting piece.

[0007] Preferably: the end face pneumatic clamping mechanism comprises a support seat connected to the frame, the side of the support seat is connected to a cylinder seat A, the top of the cylinder Qa is connected to a pressure claw seat, the pressure claw is connected to the pressure claw seat through a diamond pin A, and a copper block A is connected under the pressure claw.

[0008] Preferably: the side pneumatic clamping structure comprises a cylinder Qd connected to the frame, the top of the cylinder Qd is connected to a pressing plate through a connecting piece C, the other end of the pressing plate is connected to a copper pressing head through screws, and a spring is sleeved on the screws between the copper pressing head and the pressing plate;

[0009] Preferably, the copper pressure head is arranged directly above the ejector hole on the ejector seat.

[0010] Preferably: the cylinder Qd in the front side pneumatic clamping structure on the left side of the frame is set as a right-handed clamping cylinder, and the cylinder Qd in the other five side pneumatic clamping structures are set as left-handed clamping cylinders; the cylinder Qd in the front side pneumatic clamping structure on the right side of the frame is set as a left-handed clamping cylinder, and the cylinder Qd in the other five side pneumatic clamping structures are set as right-handed clamping cylinders.

[0011] Preferably: the gas path structure includes an air source processing unit, a first pipeline, the first pipeline is connected to an end surface pressing workpiece gas path structure, a side surface pressing workpiece gas path structure, a diamond pin, a round pin pressing workpiece gas path structure, and a pressing stud gas path structure.

[0012] Preferably: the end face pressing workpiece gas path structure includes a pressure reducing valve whose inlet is connected to the first pipeline, the pressure reducing valve outlet is connected to the inlet of a three-position five-way solenoid valve, the three-position five-way solenoid valve outlet is connected to the second pipeline and the third pipeline, the second pipeline is connected to the A cavity of several cylinders Qa through an air pipe, and a throttling exhaust valve is also connected to the air pipe; the third pipeline is connected to the B cavity of several cylinders Qa through an air pipe, and a throttling exhaust valve is also connected to the air pipe; the side face pressing workpiece gas path structure is the same as the end face pressing workpiece gas path structure.

[0013] Preferably: the diamond pin and round pin press the workpiece gas path structure, including a three-position five-way solenoid valve connected to the first pipeline at the inlet end, the three-position five-way solenoid valve outlet is connected to the sixth pipeline and the seventh pipeline, the sixth pipeline is connected to the A cavity of several cylinders Qb through an air pipe, and the air pipe is also connected to a throttling exhaust valve; the seventh pipeline is connected to the B cavity of several cylinders Qb through an air pipe, and the air pipe is also connected to a throttling exhaust valve.

[0014] Preferably: the tightening stud air circuit structure includes a three-position five-way solenoid valve whose inlet end is connected to the first pipeline, and the outlet of the three-position five-way solenoid valve is connected to the eighth pipeline and the ninth pipeline. The eighth pipeline is connected to the A cavity of several mini cylinders Qc through an air pipe, and a manual valve is also connected to the air pipe; the ninth pipeline is connected to the B cavity of several mini cylinders Qc through an air pipe, and a manual valve is also connected to the air pipe.

[0015] Preferably: the first pipeline (15), the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline, the ninth pipeline and the air pipe are sleeved with a high temperature resistant sleeve;

[0016] The air source processing unit, the pressure reducing valve, the three-position five-way solenoid valve, the manual valve, the throttling exhaust valve and the program controller are connected by wires.

[0017] Compared with the traditional structure, the beneficial effects of the present invention are: novel and ingenious structure, compacting the workpiece by pneumatic tooling, high degree of automation, displacement welding, easy operation, greatly reducing labor intensity, improving work efficiency and welding quality, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 1 Middle AA section view;

[0020] Figure 3 It is a schematic diagram of the structure of the end surface pneumatic pressing machine in the present invention;

[0021] Figure 4 It is a schematic diagram of the welding A assembly structure in the present invention;

[0022] Figure 5 It is a schematic diagram of the side pneumatic pressing structure in the present invention;

[0023] Figure 6 It is a schematic diagram of the gas path structure of the present invention;

[0024] Figure 7 The end surface of the present invention is pressed against the workpiece gas path structure;

[0025] Figure 8 The gas path structure of the side-pressing workpiece of the present invention;

[0026] Fig. 9 The diamond pin and round pin of the present invention are used to tighten the gas path structure of the workpiece;

[0027] Fig.10 The present invention provides a tightening stud gas path structure;

[0028] In the figure: 1. Frame, 2. Positioner connecting plate, 3. Eyebolt, 4. End face pneumatic clamping mechanism, 41. Cylinder Qa, 42. Support seat, 43. Claw seat, 44. Claw, 45. Pressing plate, 46. Copper block A, 47. Diamond pin A, 48. Cylinder seat A, 5. Welding A assembly, 51. Positioning plate, 52. Bushing, 53. Stud clamping mechanism, 531. Base, 532. Ejector seat, 533. Ejector, 534. Connector A, 535. Mini cylinder Qc, 536. Hand valve, 54. Diamond pin structure, 541. Limit pin, 542. Cylinder seat B, 543. Cylinder Qb, 544. Diamond pin structure, 55. Round pin structure, 552. Connector B, 553. Guide sleeve B, 554. Round pin, 555. Cylinder seat C, 6. Side pneumatic clamping structure, 61. Cylinder Qd, 62. Connector C, 63. Copper pressure head, 64. Nut, 65. Spring, 66. Pressure plate, 67. Screw, 7. Welding B assembly, 8. Main positioning pin, 9. Cylindrical pin, 10. Sliding pin structure, 11. Guide rod, 12. Nylon limit block, 14. Air source processing unit, 141. Air filter, 142. Pressure reducer, 143. Oil mist collector, 15. First pipeline, 16. End face clamping workpiece gas path structure, 161. Pressure reducing valve, 162. Three-position five-way solenoid valve, 163. Second pipeline, 164. Third pipeline, 165. Throttle exhaust valve, 17. Side-pressing workpiece gas circuit structure, 171. Fourth pipeline, 172. Fifth pipeline, 18. Diamond pin and round pin to tighten workpiece gas circuit structure, 181. Sixth pipeline, 182. Seventh pipeline, 19. Tightening stud gas circuit structure, 191. Eighth pipeline, 192. Ninth pipeline. DETAILED DESCRIPTION

[0029] The present invention is further described below.

[0030] Referring to the accompanying drawings, a stud displacement welding pneumatic tooling includes an air path structure and a mechanical structure, characterized in that: the mechanical structure includes a frame 1, and the front and rear ends of the frame 1 are provided with positioner connecting plates 2, and the left part of the frame 1 is connected with welding A assembly 5, welding A assembly 5 and welding B assembly 7 in sequence from bottom to top, and the left parts of the welding A assembly 5 and welding B assembly 7 are both connected with a side pneumatic clamping structure 6; the upper end frame 1 of the welding B assembly 7 is connected with an end face pneumatic clamping mechanism 4; the rear frame 1 of the rear welding A assembly 5 is connected with an end face pneumatic clamping mechanism 6 Structure 4; the frame 1 is also connected to a plurality of nylon limit blocks 12 for limiting the workpiece; the right side of the frame 1 is symmetrically provided with a welding A assembly 5, a welding B assembly 7, an end face pneumatic clamping mechanism 4, and a side face pneumatic clamping structure 6; the left side of the frame 1 is connected to a main positioning pin 8 for positioning the workpiece, and the right side of the frame 1 is connected to a sliding pin structure 10 for positioning the workpiece; the welding A assembly 5 and the welding B assembly 7 are connected to a plurality of guide rods 11 through nuts, and the lower part of the guide rods 11 passes through the frame 1; the welding B assembly 7 has the same structure as the welding A assembly 5 but different sizes.

[0031] In this preferred embodiment, the welding A assembly 5 includes a positioning plate 51 and a bushing 52. Two stud clamping mechanisms 53 are respectively connected to the front and rear sides of the positioning plate 51. A round pin structure 55 is connected to the bottom of the positioning plate 51 at the left end of the front side of the positioning plate 51, and a diamond pin structure 54 is connected to the bottom right side of the positioning plate 51. The stud clamping mechanism 53 includes a base 531 connected to the positioning plate 51, and a mini cylinder Qc535 and a push rod seat 532 are vertically connected to the side of the base 531. The mini cylinder Qc The upper end of 535 is connected to a push rod 533 through a connecting piece A534, and the push rod 533 passes through a push rod seat 532 to facilitate tightening the studs that need to be welded. A hand valve 536 is also connected to the base 531; the diamond pin structure 54 includes a cylinder seat B542 connected to the positioning plate 51, and the top of the cylinder Qb543 is connected to the diamond pin 544 through a connecting piece; the round pin structure 55 includes a cylinder seat C555 connected to the positioning plate 51, and the top of the cylinder Qb543 is connected to the round pin 554 through a connecting piece.

[0032] In this preferred embodiment, the end face pneumatic clamping mechanism 4 includes a support seat 42 connected to the frame 1, the side of the support seat 42 is connected to a cylinder seat A48, the top of the cylinder Qa41 is connected to a pressure claw seat 43, the pressure claw 44 is connected to the pressure claw seat 43 through a diamond pin A47, and a copper block A46 is connected to the bottom of the pressure claw 44.

[0033] In this preferred embodiment, the side pneumatic clamping structure 6 includes a cylinder Qd61 connected to the frame 1, the top of the cylinder Qd61 is connected to a pressing plate 66 through a connecting piece C62, the other end of the pressing plate 66 is connected to a copper pressing head 63 through a screw 67, and a spring 65 is sleeved on the screw 67 between the copper pressing head 63 and the pressing plate 66;

[0034] In this preferred embodiment, the copper pressure head 63 is arranged just above the ejector hole on the ejector seat 532 .

[0035] In this preferred embodiment, the cylinder Qd61 in the front side pneumatic clamping structure 6 on the left side of the frame 1 is set as a right-handed clamping cylinder, and the cylinder Qd61 in the other five side pneumatic clamping structures 6 is set as a left-handed clamping cylinder; the cylinder Qd61 in the front side pneumatic clamping structure 6 on the right side of the frame 1 is set as a left-handed clamping cylinder, and the cylinder Qd61 in the other five side pneumatic clamping structures 6 is set as a right-handed clamping cylinder.

[0036] In this preferred embodiment, the gas path structure includes an air source processing unit 14, a first pipeline 15, the first pipeline 15 is connected to an end face pressing workpiece gas path structure 16, a side face pressing workpiece gas path structure 17, a diamond pin, a round pin pressing workpiece gas path structure 18, and a pressing stud gas path structure 19.

[0037] In the preferred embodiment, the end face pressing workpiece gas path structure 16 includes a pressure reducing valve 161 whose inlet end is connected to the first pipeline 15, and the outlet of the pressure reducing valve 161 is connected to the inlet of a three-position five-way solenoid valve 162, and the outlet of the three-position five-way solenoid valve 162 is connected to a second pipeline 163 and a third pipeline 164, and the second pipeline 163 is connected to the A cavity of several cylinders Qa41 through an air pipe, and a throttle exhaust valve 165 is also connected to the air pipe; the third pipeline 164 is connected to the B cavity of several cylinders Qa41 through an air pipe, and a throttle exhaust valve 165 is also connected to the air pipe; the side face pressing workpiece gas path structure 17 is the same as the end face pressing workpiece gas path structure 16.

[0038] In this preferred embodiment, the diamond pin and round pin press the workpiece air path structure 18, including a three-position five-way solenoid valve 162 whose inlet end is connected to the first pipeline 15, and the outlet of the three-position five-way solenoid valve 162 is connected to the sixth pipeline 181 and the seventh pipeline 182. The sixth pipeline 18 is connected to the A cavity of several cylinders Qb543 through an air pipe, and a throttle exhaust valve 165 is also connected to the air pipe; the seventh pipeline 182 is connected to the B cavity of several cylinders Qb543 through an air pipe, and a throttle exhaust valve 165 is also connected to the air pipe.

[0039] In this preferred embodiment, the tightening stud air circuit structure 19 includes a three-position five-way solenoid valve 162 whose inlet end is connected to the first pipeline 15, and the outlet of the three-position five-way solenoid valve 162 is connected to the eighth pipeline 191 and the ninth pipeline 192. The eighth pipeline 191 is connected to the A cavity of several mini cylinders Qc535 through an air pipe, and a manual valve 193 is also connected to the air pipe; the ninth pipeline 192 is connected to the B cavity of several mini cylinders Qc535 through an air pipe, and a manual valve 193 is also connected to the air pipe.

[0040] In the preferred embodiment, the first pipeline 15, the second pipeline 163, the third pipeline 164, the fourth pipeline 171, the fifth pipeline 172, the sixth pipeline 181, the seventh pipeline 182, the eighth pipeline 191, the ninth pipeline 192 and the air pipe are sleeved with a high temperature resistant sleeve;

[0041] The air source processing unit 14, the pressure reducing valve 161, the three-position five-way solenoid valve 162, the manual valve 193, the throttling exhaust valve 165 and the program controller are connected by wires.

[0042] The welding process of the present invention:

[0043] 1) Place the workpieces, insert studs into the top holes of the top rod seats 532 of the welding assembly A and the welding assembly B, and put the battery box upside down on the welding assembly A and the welding assembly B. The outer periphery of the battery box is limited by a nylon limit block 12, and the inner circle is positioned by the main positioning pin 8 and the sliding pin structure 10;

[0044] 2) The four cylinders Qa41 at both ends of the battery box drive the copper block A46 to press the battery box tightly;

[0045] 3) The 12 cylinders Qb543 in the battery box are pushed upward, and the 6 diamond pins 544 and 6 round pins 554 are positioned on the bottom of the battery box;

[0046] 4) Push 24 mini cylinders Qc535 upwards and press the studs against the battery box;

[0047] 5) The 12 cylinders Qd61 on both sides of the battery box drive the copper pressure head 63 to press the battery box tightly. The copper pressure head 63 is conducive to heat dissipation during the welding process;

[0048] 6) The robot welds the studs at one end of the battery box;

[0049] 7) The positioner rotates, and the robot welds the studs at the other end of the battery box;

[0050] 8) After welding is completed, the positioner rotates to the initial position, cylinder Qd is released, mini cylinder Qc is released, cylinder Qb is released, cylinder Qa is released, and the welding process is completed.

[0051] The present invention controls the actions of various valves and cylinders by a program, and the workpiece can be pressed and welded by simply pressing a button. The manual valves on the welding A assembly and the welding B assembly have automatic and manual functions. In case there is an error in the processing of the battery box and the stud is stuck, the manual valve is turned on, and the mini cylinder Qc connected to the manual valve is cut off, and the position of the stud can be manually adjusted and then the stud is clamped.

[0052] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A pneumatic tooling for stud displacement welding, comprising a gas path structure and a mechanical structure, characterized in that: The mechanical structure comprises a frame (1), wherein the front and rear ends of the frame (1) are provided with positioner connection plates (2); the left part of the frame (1) is connected with two welding A assemblies (5) and a welding B assembly (7) in sequence from front to back; the left parts of the welding A assembly (5) and the welding B assembly (7) are both connected with a side pneumatic clamping structure (6); the rear end frame (1) of the welding B assembly (7) is connected with an end face pneumatic clamping mechanism (4); the front end frame (1) of the front welding A assembly (5) is connected with an end face pneumatic clamping mechanism (4); the frame (1) is also connected with a plurality of pneumatic clamping mechanisms for limiting the position of the workpiece. The frame (1) is symmetrically provided with a welding A assembly (5), a welding B assembly (7), an end face pneumatic clamping mechanism (4), and a side face pneumatic clamping structure (6) on the right side; the frame (1) is connected to a main positioning pin (8) for positioning the workpiece on the left side, and is connected to a sliding pin structure (10) for positioning the workpiece on the right side; the welding A assembly (5) and the welding B assembly (7) are connected to a plurality of guide rods (11) via nuts, and the lower part of the guide rods (11) passes through the frame (1); the welding B assembly (7) and the welding A assembly (5) have the same structure but different sizes; The welding A assembly (5) comprises a positioning plate (51) and a bushing (52). Two stud pressing mechanisms (53) are respectively connected to the front and rear sides of the positioning plate (51). A round pin structure (55) is connected to the bottom of the positioning plate (51) at the left end of the front side of the positioning plate (51), and a diamond pin structure (54) is connected to the bottom right side of the rear side of the positioning plate (51). The stud pressing mechanism (53) comprises a base (531) connected to the positioning plate (51). A mini cylinder Qc (535) and a push rod seat (532) are vertically connected to the side of the base (531). The mini cylinder Qc (535) The upper end is connected to a push rod (533) via a connecting piece A (534), and the push rod (533) passes through a push rod seat (532) to facilitate tightening a stud that needs to be welded. The base (531) is also connected to a hand valve (536); the diamond pin structure (54) includes a cylinder seat B (542) connected to the positioning plate (51), and the top of the cylinder Qb (543) is connected to a diamond pin (544) via a connecting piece; the round pin structure (55) includes a cylinder seat C (555) connected to the positioning plate (51), and the top of the cylinder Qb (543) is connected to a round pin (554) via a connecting piece; The end face pneumatic clamping mechanism (4) comprises a support seat (42) connected to the frame (1), a cylinder seat A (48) being connected to the side of the support seat (42), a pressure claw seat (43) being connected to the top of the cylinder Qa (41), a pressure claw (44) being connected to the pressure claw seat (43) via a diamond pin A (47), and a copper block A (46) being connected below the pressure claw (44).

2. A pneumatic tooling for stud displacement welding according to claim 1, characterized in that: The side pneumatic pressing structure (6) comprises a cylinder Qd (61) connected to the frame (1); the top of the cylinder Qd (61) is connected to a pressing plate (66) via a connecting piece C (62); the other end of the pressing plate (66) is connected to a copper pressing head (63) via a screw (67); a spring (65) is sleeved on the screw (67) between the copper pressing head (63) and the pressing plate (66); The copper pressure head (63) is arranged just above the ejector rod hole on the ejector rod seat (532).

3. The pneumatic tooling for stud displacement welding according to claim 1 is characterized in that: The cylinder Qd (61) in the frontmost side pneumatic clamping structure (6) on the left side of the frame (1) is configured as a right-handed clamping cylinder, and the cylinders Qd (61) in the other five side pneumatic clamping structures (6) are configured as left-handed clamping cylinders; the cylinder Qd (61) in the frontmost side pneumatic clamping structure (6) on the right side of the frame (1) is configured as a left-handed clamping cylinder, and the cylinders Qd (61) in the other five side pneumatic clamping structures (6) are configured as right-handed clamping cylinders.

4. According to claim 1, a pneumatic tool for stud displacement welding, characterized in that: The gas path structure comprises an air source processing unit (14) and a first pipeline (15), wherein the first pipeline (15) is connected to an end surface pressing workpiece gas path structure (16), a side surface pressing workpiece gas path structure (17), a diamond pin and a round pin pressing workpiece gas path structure (18), and a pressing stud gas path structure (19).

5. According to claim 4, a pneumatic tooling for stud displacement welding is characterized in that: The end face pressing workpiece gas path structure (16) comprises a pressure reducing valve (161) whose inlet end is in communication with a first pipeline (15); the outlet of the pressure reducing valve (161) is in communication with the inlet of a three-position five-way solenoid valve (162); the outlet of the three-position five-way solenoid valve (162) is connected to a second pipeline (163) and a third pipeline (164); the second pipeline (163) is connected to the A chamber of a plurality of cylinders Qa (41) through an air pipe, and a throttle exhaust valve (165) is also connected to the air pipe; the third pipeline (164) is connected to the B chamber of a plurality of cylinders Qa (41) through an air pipe, and a throttle exhaust valve (165) is also connected to the air pipe; the side face pressing workpiece gas path structure (17) is the same as the end face pressing workpiece gas path structure (16).

6. The pneumatic tooling for stud displacement welding according to claim 5, characterized in that: The diamond pin and round pin workpiece-tightening gas path structure (18) comprises a three-position five-way solenoid valve (162) whose inlet end is connected to the first pipeline (15); the three-position five-way solenoid valve (162) has an outlet connected to a sixth pipeline (181) and a seventh pipeline (182); the sixth pipeline (181) is connected to the A chamber of a plurality of cylinders Qb (543) via an air pipe, and a throttle exhaust valve (165) is also connected to the air pipe; the seventh pipeline (182) is connected to the B chamber of a plurality of cylinders Qb (543) via an air pipe, and a throttle exhaust valve (165) is also connected to the air pipe.

7. A pneumatic tooling for stud displacement welding according to claim 6, characterized in that: The tightening stud gas circuit structure (19) comprises a three-position five-way solenoid valve (162) whose inlet end is connected to the first pipeline (15); the three-position five-way solenoid valve (162) has an outlet connected to an eighth pipeline (191) and a ninth pipeline (192); the eighth pipeline (191) is connected to the A chambers of a plurality of mini cylinders Qc (535) via an air pipe, and a manual valve (193) is also connected to the air pipe; the ninth pipeline (192) is connected to the B chambers of a plurality of mini cylinders Qc (535) via an air pipe, and a manual valve (193) is also connected to the air pipe.

8. The pneumatic tooling for stud displacement welding according to claim 7 is characterized in that: The first pipeline (15), the second pipeline (163), the third pipeline (164), the fourth pipeline (171), the fifth pipeline (172), the sixth pipeline (181), the seventh pipeline (182), the eighth pipeline (191), the ninth pipeline (192) and the air pipe are sleeved with high temperature resistant sleeves; The air source processing unit (14), the pressure reducing valve (161), the three-position five-way solenoid valve (162), the manual valve (193), the throttling exhaust valve (165) and the program controller are connected by wires.

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