A smart welding equipment for fire extinguisher tanks

Abstract

This invention relates to the field of welding positioning technology, specifically an intelligent welding device for fire extinguisher cylinders. The device includes a welding module, an alignment and adjustment component, an expansion component, a closing component, and auxiliary components. One side of the welding module has a horizontally opened welding cavity. When the fire extinguisher cylinder is fitted onto the welding cantilever seat, regardless of the orientation of the joint, the expansion component, closing component, and alignment and adjustment component work together to quickly orient the joint of the fire extinguisher cylinder toward the welding mounting groove, improving the adjustment efficiency and convenience after welding. The auxiliary components further enhance the mechanical positioning of the adjustment ring, thus improving the alignment accuracy between the joint and the welding device. Additionally, the power gas driving the positioning rod can treat, drain, and collect the dust and fumes generated during welding within the welding cavity, improving welding safety and quality.

Description

Technical Field

[0001] This invention relates to the field of welding positioning technology, specifically to an intelligent welding device for fire extinguisher tanks. Background Technology

[0002] Welding of fire extinguisher tanks refers to the metal welding of components such as the cylinder, head, and valve seat. After welding, it is necessary to ensure that the weld has sufficient strength, sealing and corrosion resistance to ensure that the tank can withstand the specified working pressure after being filled with extinguishing agent. At the same time, it is necessary to avoid the risk of leakage or explosion due to welding defects (such as porosity, cracks, lack of fusion, etc.). It is a key manufacturing link to ensure the safety and reliability of fire extinguishers.

[0003] The utility model disclosed in publication number CN204771250U is a straight seam welding machine for fire extinguisher cylinders, including a frame, a welding trolley, a welding torch adjustment frame, a welding torch, and a positioning cylinder. A track is laid on the upper part of the frame, and the welding trolley slides along the track. The welding torch adjustment frame is fixed on the welding trolley and holds the welding torch. A welding positioning plate is provided in the middle of the frame, and the positioning cylinder is located at the bottom of the welding positioning plate. This solution improves welding quality and efficiency by positioning and fixing the fire extinguisher cylinder through a moving welding mechanism and a positioning cylinder. Since the fire extinguisher cylinder for seam welding is made by rolling metal sheets during processing, manual labor or a robotic arm is required to place the rolled, unwelded fire extinguisher cylinder into the straight seam welding equipment. Because the moving stroke of the moving welding equipment is relatively fixed, the relative position of the cylinder seam and the welding torch affects the alignment quality and the quality of the finished weld. During alignment operations, the accuracy is often poor or the efficiency is low, making it inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent welding device for fire extinguisher tanks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent welding device for fire extinguisher tanks, comprising:

[0006] A welding module has a horizontally opened welding cavity groove on one side. A movable welding installation groove is opened above the welding cavity groove. A fixed installation seat is inserted and fixed on one side of the welding module. A welding cantilever seat is provided at the center of one side of the fixed installation seat. The welding cantilever seat is located in the center of the welding cavity groove. A fire extinguisher cylinder is sleeved on the welding cantilever seat through an expansion assembly and a retraction assembly. The expansion assembly includes eight support rollers, and the retraction assembly includes three cylinder retraction clamps.

[0007] The alignment adjustment component is rotatably sleeved and welded to a cantilever seat. The alignment adjustment component includes an adjustment ring, a lifting box, and a T-shaped actuating plate. The T-shaped actuating plate is inserted into the unwelded joint of the fire extinguisher cylinder.

[0008] The auxiliary component includes a push plug ring and three positioning rods, one side of each of the three positioning rods being inserted into one side of an adjusting ring, and the push plug ring being movably inserted into a fixed mounting base.

[0009] Preferably, the welded cantilever seat has an adjustment rotation groove at its center, and four clearance grooves are symmetrically provided on both sides of the adjustment rotation groove. A support frame is movably inserted into each clearance groove, and eight support rollers are respectively rotatably located on one side of the support frame. One side of each support roller extends out of the clearance groove and contacts the inner circumference of the fire extinguisher cylinder.

[0010] Preferably, the center of the welding cantilever seat is provided with a first air inlet groove through the fixed mounting seat. The first air inlet groove is connected to the clearance groove and has a plurality of first piston grooves. The support frame is provided with a first piston rod on one side of the first piston groove. The first piston rod is movably inserted into the first piston groove. The first piston rod is sleeved with a first spring on one side of the first piston rod in the first piston groove. The three cylinder retracting clamps are respectively provided on the three sides of the welding cavity groove, and the three cylinder retracting clamps are far away from the movable welding mounting groove.

[0011] Preferably, the adjusting ring is rotatably inserted into the adjusting rotating groove via a sealed bearing. An annular air groove is provided on the inner circumference of the adjusting ring. A connecting groove is provided in the first air inlet groove, which is connected to the annular air groove. An internal gear ring is provided on the inner circumference of the adjusting ring near the fixed mounting base. A gear groove is provided on one side of the adjusting rotating groove in the welded cantilever base. A rotating gear is rotatably provided in the gear groove. One side of the rotating gear extends out of the gear groove and meshes with the internal gear ring.

[0012] Preferably, one side of the adjusting ring is provided with a boss, and the upper end of the boss is provided with a lifting groove. The lifting box is horizontally inserted into the lifting groove. The boss is provided with a second piston groove that connects the lifting groove and the annular air groove. The lower end of the lifting box located in the second piston groove is provided with a second piston rod. The upper end of the second piston rod near the lifting box is provided with a constraint groove. A constraint plate is horizontally provided through the constraint groove in the second piston groove. The lower end of the constraint plate located in the constraint groove is provided with a second spring.

[0013] Preferably, the lifting box has a telescopic groove, and a T-shaped actuating piece is vertically inserted through the upper end of the telescopic groove. The upper end of the T-shaped actuating piece extends out of the lifting box and is located in the unwelded joint of the fire extinguisher cylinder. The side of the T-shaped actuating piece located in the telescopic groove is movably connected by a guide rod, and several third springs are provided at the lower end of the T-shaped actuating piece located in the telescopic groove.

[0014] Preferably, the welding cantilever seat has two horizontally arranged bottom support strips near the upper end of the movable welding installation groove. The upper center of the bottom support strip has a welding clearance groove, and the two bottom support strips are located on both sides of the adjustment rotation groove.

[0015] Preferably, the fixed mounting base has an annular piston groove, which pushes the plug ring to move within the annular piston groove. A second air inlet groove is provided at the end of the annular piston groove away from the welded cantilever seat, and a return spring is provided at the end of the plug ring away from the second air inlet groove.

[0016] Preferably, an annular transition groove is provided on one side of the annular piston groove, and a push-pull ring is provided on one side of the push-pull ring located in the annular transition groove. One side of each of the three positioning rods is connected to one side of the push-pull ring. One side of each of the three positioning rods passes through the welded cantilever seat and is inserted into the adjustment rotation groove. One side of the adjustment rotation ring is provided with three conical positioning grooves. The end of each of the three positioning rods away from the push-pull ring is a conical structure, and the conical end of each of the three positioning rods is inserted into the three conical positioning grooves.

[0017] Preferably, an annular drainage groove is provided on one side of the annular transition groove through the fixed mounting base, and a plurality of suction grooves are provided on one side of the fixed mounting base located in the welding cavity groove. The plurality of suction grooves are respectively connected to the annular drainage groove, and a collection cover is provided on one side of the fixed mounting base located in the annular drainage groove by a threaded connection.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When this device attaches the fire extinguisher cylinder to the welded cantilever seat, regardless of the orientation of the joint, the expansion, retraction, and alignment components work together to quickly orient the fire extinguisher cylinder's joint toward the moving welded mounting slot. This improves the efficiency and convenience of adjustment after the fire extinguisher cylinder is welded and placed. Furthermore, with the assistance of auxiliary components, the position of the adjustment ring can be further mechanically reinforced, thus enhancing the alignment accuracy between the joint and the welding device. In addition, the power gas driving the positioning rod can treat, guide, and collect the dust and fumes generated during welding within the welding chamber, improving welding safety and quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the side-cut structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of part A;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 This is a side sectional view of the rotating gear connection of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of part C;

[0026] Figure 7 This is a side-cut schematic diagram of the support roller connection of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of part D;

[0028] Figure 9 This is a side sectional view of the push-ring connection of the present invention;

[0029] Figure 10 For the present invention Figure 9 Schematic diagram of part E;

[0030] Figure 11 For the present invention Figure 9 Schematic diagram of part F;

[0031] Figure 12 This is a schematic diagram of the adjusted internal structure of the rotating groove in this invention;

[0032] Figure 13 For the present invention Figure 12 Schematic diagram of part G;

[0033] Figure 14 This is a schematic diagram illustrating the positional relationship between the rotating ring and the positioning rod in this invention.

[0034] Figure 15 For the present invention Figure 14 A schematic diagram of part H.

[0035] In the diagram: 1. Welding module; 2. Welding cavity groove; 3. Moving welding mounting groove; 4. Fixed mounting base; 5. Welding cantilever base; 6. First air inlet groove; 7. Clearance groove; 8. First piston groove; 9. Support frame; 10. Support roller; 11. First piston rod; 12. First spring; 13. Adjusting rotation groove; 14. Adjusting rotating ring; 15. Annular air groove; 16. Connecting groove; 17. Boss; 18. Lifting groove; 19. Lifting box; 20. Second piston groove; 21. Second piston rod; 22. Constraint groove; 23. Constraint horizontal plate; 24. Second spring; 25. T-shaped actuating piece; 26. Third spring; 27. Fire extinguisher cylinder; 28. Rotating gear; 29. ​​Internal gear ring; 30. Annular piston groove; 31. Push plug ring; 32. Reset spring; 33. Positioning rod; 34. Conical positioning groove; 35. Annular drainage groove; 36. Suction groove; 37. Collection cover; 38. Second air inlet groove; 39. Cylinder retracting clamp; 40. Bottom support placement strip; 41. Welding clearance groove. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see the appendix Figure 1-15 This application provides the following technical solutions.

[0038] Example 1: An intelligent welding device for fire extinguisher tanks includes a welding module 1. A welding cavity 2 is horizontally formed on one side of the welding module 1. A movable welding mounting slot 3 is connected above the welding cavity 2. A fixed mounting base 4 is inserted and fixedly mounted on one side of the welding module 1 within the welding cavity 2. A welding cantilever seat 5 is located at the center of one side of the fixed mounting base 4. The welding cantilever seat 5 is located at the center of the welding cavity 2. A fire extinguisher tank 27 is fitted onto the welding cantilever seat 5 via an expansion assembly and a retraction assembly. The expansion assembly includes eight support rollers 10, and the retraction assembly includes three cylinder retraction clamps. Plate 39, the center of the welded cantilever seat 5 is provided with an adjustment rotation groove 13, and four relief grooves 7 are symmetrically provided on both sides of the adjustment rotation groove 13. A support frame 9 is movably inserted into each relief groove 7. Eight support rollers 10 are respectively rotatably provided on one side of the support frame 9. One side of each support roller 10 extends out of the relief groove 7 and contacts the inner circumference of the fire extinguisher cylinder 27. When the fire extinguisher cylinder 27 is sleeved on the welded cantilever seat 5 by the eight support rollers 10, the three cylinders retract the clamping plate 39 away from the fire extinguisher cylinder 27, so as to provide horizontal rotation support for the fire extinguisher cylinder 27.

[0039] The center of the welded cantilever seat 5 is provided with a first air inlet groove 6 through the fixed mounting seat 4. The first air inlet groove 6 is connected to the clearance groove 7 and has several first piston grooves 8. The support frame 9 is provided with a first piston rod 11 on one side of the first piston groove 8. The first piston rod 11 is movably inserted into the first piston groove 8. The first piston rod 11 is sleeved with a first spring 12 on one side of the first piston rod 11 in the first piston groove 8. The three cylinder closing clamps 39 are respectively provided on three sides of the welding cavity groove 2, and the three cylinder closing clamps 39 are far away from the movable welding mounting groove 3. When high-pressure airflow is introduced into the first air inlet groove 6, the high-pressure gas supports several first piston rods 11 of the eight support frames 9. At this time, the eight support rollers 10 push the four sides of the welded cantilever seat 5, causing the inner diameter of the fire extinguisher cylinder 27 to expand and change, thereby opening the unwelded joint of the fire extinguisher cylinder 27 by a certain width.

[0040] The alignment and adjustment assembly is configured so that the unwelded seam of the fire extinguisher cylinder 27 faces directly upwards and corresponds to the movable welding mounting groove 3. The alignment and adjustment assembly is rotatably sleeved onto the welded cantilever seat 5. The alignment and adjustment assembly includes an adjustment ring 14, a lifting box 19, and a T-shaped actuating piece 25. The T-shaped actuating piece 25 is inserted into the unwelded seam of the fire extinguisher cylinder 27. The adjustment ring 14 is rotatably inserted into the adjustment rotation groove 13 via a sealed bearing. An annular air groove 15 is provided on the inner circumference of the adjustment ring 14. A connecting groove 16 is provided in the first air inlet groove 6 to connect with the annular air groove 15. An internal gear ring 29 is provided on the inner circumference side of the adjusting ring 14 near the fixed mounting base 4. A gear groove is provided on one side of the adjusting rotation groove 13 in the welded cantilever base 5. A rotating gear 28 is rotatably provided in the gear groove. One side of the rotating gear 28 extends out of the gear groove and meshes with the internal gear ring 29. The adjusting ring 14 can rotate in the adjusting rotation groove 13 through the bearing. The rotation is controlled by the meshing of the rotating gear 28 and the internal gear ring 29. When the rotating gear 28 is driven to rotate by the PLC servo stepper motor, the adjusting ring 14 can be rotated.

[0041] A boss 17 is provided on one side of the adjusting ring 14. A lifting groove 18 is provided at the upper end of the boss 17. A lifting box 19 is horizontally inserted into the lifting groove 18. A second piston groove 20 is provided in the boss 17, connecting the lifting groove 18 and the annular air groove 15. A second piston rod 21 is provided at the lower end of the lifting box 19 located in the second piston groove 20. A constraint groove 22 is provided at the upper end of the second piston rod 21 near the lifting box 19. A constraint plate 23 is horizontally provided through the constraint groove 22 in the second piston groove 20. A second constraint plate 23 is provided at the lower end of the constraint plate 23 located in the constraint groove 22. Spring 24, the lifting box 19 has a telescopic groove, and a T-shaped actuating piece 25 is vertically inserted through the upper end of the telescopic groove. The upper end of the T-shaped actuating piece 25 extends out of the lifting box 19 and is located in the unwelded joint of the fire extinguisher cylinder 27. The side of the T-shaped actuating piece 25 located in the telescopic groove is movably connected by a guide rod. Several third springs 26 are provided at the lower end of the T-shaped actuating piece 25 located in the telescopic groove. When high-pressure gas is introduced into the first air inlet groove 6, the support roller 10 provides normal inner diameter support for the fire extinguisher cylinder 27. At this time, regardless of the unwelded joint of the fire extinguisher cylinder 27... Regardless of the seam location, the lifting box 19 descends and is placed within the lifting groove 18 under the action of the second spring 24. The end of the T-shaped actuating piece 25 will not contact the fire extinguisher cylinder 27. When high-pressure gas is introduced into the first air inlet groove 6, the support roller 10 extends, and the lifting box 19 also rises, causing the T-shaped actuating pieces 25 to rotate together. At this time, several T-shaped actuating pieces 25 are not aligned with the unwelded seam of the fire extinguisher cylinder 27, and the end of the T-shaped actuating piece 25 will abut against the inner wall of the fire extinguisher cylinder 27, thus the T-shaped actuating piece 25 rotates. The moving piece 25 will compress the third spring 26 to retract into the lifting box 19. When the adjusting ring 14 rotates to control the T-shaped actuating piece 25 to reach the unwelded joint position of the fire extinguisher cylinder 27, the T-shaped actuating piece 25 is inserted into the joint. Then the adjusting ring 14 continues to drive the T-shaped actuating piece 25 to rotate. The T-shaped actuating piece 25 can actuate the fire extinguisher cylinder 27 to rotate along the support roller 10. Finally, the T-shaped actuating piece 25 is vertically facing the movable welding mounting groove 3, so that the unwelded joint of the fire extinguisher cylinder 27 is also below the position of the movable welding mounting groove 3.

[0042] Two bottom support strips 40 are horizontally provided at the upper end of the welding cantilever seat 5 near the upper end of the movable welding installation groove 3. A welding clearance groove 41 is opened at the center of the upper end of the bottom support strip 40, and the two bottom support strips 40 are respectively located on both sides of the adjustment rotation groove 13. When the joint of the fire extinguisher cylinder 27 is below the movable welding installation groove 3, the gas in the first air inlet groove 6 is discharged, and the lifting box 19 and the support roller 10 are reset under the action of their respective springs. The T-shaped actuating piece 25 is inside the fire extinguisher cylinder 27 and is lower than the welding clearance groove 41. At this time, the fire extinguisher cylinder 27 closes the joint under its own cylindrical elastic reset action. During the closing process, the bottom support strips 40 can support the inner wall of the joint of the fire extinguisher cylinder 27, so that the joint is completely spliced. During this period, the three cylinder closing clamps 39 can complete the splicing and ensure the stability of the fire extinguisher cylinder 27.

[0043] Example 2: Based on Example 1, an auxiliary component is provided to mechanically position the adjusting ring 14 and simultaneously treat the dust and fumes generated during welding within the welding cavity 2. The auxiliary component includes a push plug ring 31 and three positioning rods 33. One side of each of the three positioning rods 33 is inserted into one side of the adjusting ring 14. The push plug ring 31 is movably inserted into the fixed mounting base 4. The fixed mounting base 4 has an annular piston groove 30. The push plug ring 31 is movably positioned within the annular piston groove 30. A second air inlet groove 38 is provided through the end of the annular piston groove 30 away from the welding cantilever seat 5. A return spring 32 is provided at the end of the push plug ring 31 away from the second air inlet groove 38. An annular transition groove is provided on one side of the annular piston groove 30. A push-pull ring is provided on the side of the push plug ring 31 located within the annular transition groove. One side of each of the three positioning rods 33 is connected to one side of the push-pull ring. One side of the positioning rod 33 passes through the welded cantilever seat 5 and is inserted into the adjustment rotation groove 13. One side of the adjustment ring 14 has three conical positioning grooves 34. The end of the three positioning rods 33 away from the push-pull ring is a conical structure, and the conical end of the three positioning rods 33 is inserted into the three conical positioning grooves 34 respectively. Before the first air inlet groove 6 stops supplying high-pressure air, in order to avoid the error that may be caused by the rotating gear 28 turning the adjustment ring 14, when high-pressure gas is supplied to the position of the second air inlet groove 38, the high-pressure gas enters the annular piston groove 30 and pushes the push-pull ring 31 and the push-pull ring to move towards the welded cantilever seat 5. At this time, the annular piston groove 30 is connected to the annular transition groove. The push-pull ring simultaneously pushes one side of the three positioning rods 33 into the conical positioning grooves 34 of the adjustment ring 14. Through the cooperation of the conical structure, the position of the adjustment ring 14 is accurately positioned.

[0044] An annular guide groove 35 is provided on one side of the fixed mounting base 4 through the annular transition groove. Several suction grooves 36 are provided on one side of the fixed mounting base 4 located in the welding cavity groove 2. The suction grooves 36 are connected to the annular guide groove 35. A collection cover 37 is provided on one side of the fixed mounting base 4 located in the annular guide groove 35 through a threaded connection. When high-pressure airflow is continuously sent into the annular piston groove 30, the positioning rod 33 can be kept inserted into the conical positioning groove 34. In addition, under the action of the annular transition groove, the high-pressure airflow is discharged horizontally from the annular guide groove 35. Then, when the airflow flows through the annular guide groove 35, it pulls the airflow at the position of the suction groove 36, so that the suction grooves 36 can guide the airflow in the welding cavity groove 2. Since the fire extinguisher cylinder 27 is welded in the welding cavity groove 2, the welding fumes and exhaust gases generated in the welding cavity groove 2 can be guided by the airflow at the position of the suction groove 36 and collected and treated uniformly.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent welding apparatus for fire extinguisher cylinders, characterized by, Include: Welding module (1), one side of the welding module (1) is horizontally provided with a welding cavity groove (2), the welding module (1) is communicated and provided with a movable welding installation groove (3) above the welding cavity groove (2), a fixed mounting seat (4) is fixedly connected to one side of the welding module (1), a welding overhanging seat (5) is provided at the center of one side of the fixed mounting seat (4), the welding overhanging seat (5) is located at the center of the welding cavity groove (2), an extinguisher cylinder (27) is sleeved on the welding overhanging seat (5) through an expansion assembly and a folding assembly, the expansion assembly includes eight supporting rollers (10), and the folding assembly includes three cylinder folding clamps (39); A swing adjustment assembly is rotatably sleeved with the welding overhanging seat (5), the swing adjustment assembly includes an adjustment rotating ring (14), a lifting box (19) and a T-shaped shifting piece (25), the T-shaped shifting piece (25) is inserted into the unwelded joint of the extinguisher cylinder (27); An auxiliary assembly includes a pushing ring (31) and three positioning rods (33), the three positioning rods (33) are respectively inserted into one side of the adjustment rotating ring (14), and the pushing ring (31) is movably inserted into the fixed mounting seat (4); The welding overhanging seat (5) is provided with an adjustment rotating groove (13) at the center, four accommodation grooves (7) are symmetrically provided on both sides of the adjustment rotating groove (13), supporting frames (9) are movably inserted into the accommodation grooves (7), and eight supporting rollers (10) are rotatably arranged on one side of the supporting frames (9), one side of the supporting rollers (10) respectively extends out of the accommodation grooves (7) and is in contact with the inner circumferential side of the extinguisher cylinder (27); A first air inlet groove (6) is formed through the center of the welding overhanging seat (5) and the fixed mounting seat (4), a plurality of first piston grooves (8) are formed in the first air inlet groove (6) and communicated with the accommodation grooves (7), each supporting frame (9) is provided with a first piston rod (11) on one side of the first piston groove (8), the first piston rod (11) is movably inserted into the first piston groove (8), and a first spring (12) is sleeved on one side of the first piston rod (11) in the first piston groove (8), the three cylinder folding clamps (39) are arranged on three sides of the welding cavity groove (2), and the three cylinder folding clamps (39) are away from the movable welding installation groove (3); The adjustment rotating ring (14) is rotatably inserted into the adjustment rotating groove (13) through a sealing bearing, an annular air groove (15) is formed in the inner circumferential side of the adjustment rotating ring (14), a communication groove (16) is formed in the first air inlet groove (6) and communicated with the annular air groove (15), an internal gear ring (29) is arranged on the inner circumferential side of the adjustment rotating ring (14) close to the fixed mounting seat (4), a gear groove is formed in one side of the adjustment rotating groove (13) in the welding overhanging seat (5), a rotating gear (28) is rotatably arranged in the gear groove, one side of the rotating gear (28) extends out of the gear groove and is connected with the internal gear ring (29) in meshing engagement; The side of the adjusting rotating ring (14) is provided with a boss (17), the upper end of the boss (17) is provided with a lifting groove (18), a lifting box (19) is horizontally inserted into the lifting groove (18), the boss (17) is provided with a second piston groove (20) which is communicated with the lifting groove (18) and the annular air groove (15), the lower end of the lifting box (19) located in the second piston groove (20) is provided with a second piston rod (21), the upper end of the second piston rod (21) close to the lifting box (19) is provided with a constraint groove (22), the second piston groove (20) is horizontally provided with a constraint transverse plate (23) which penetrates through the constraint groove (22), and the lower end of the constraint transverse plate (23) located in the constraint groove (22) is provided with a second spring (24). The lifting box (19) is provided with an expansion groove, a T-shaped toggle piece (25) is vertically and penetratingly inserted into the expansion groove, the upper end of the T-shaped toggle piece (25) extending out of the lifting box (19) is located in the un-welded joint of the fire extinguisher cylinder (27), one side of the T-shaped toggle piece (25) located in the expansion groove is movably connected through a guide rod, and the lower end of the T-shaped toggle piece (25) located in the expansion groove is provided with a plurality of third springs (26).

2. The intelligent welding apparatus for fire extinguisher tank body according to claim 1, characterized in that: The upper end of the welding cantilever seat (5) close to the moving welding installation groove (3) is horizontally provided with two bottom supporting strips (40), the upper end of the bottom supporting strip (40) is provided with a welding accommodation groove (41), and the two bottom supporting strips (40) are located on the two sides of the adjusting rotating groove (13) respectively.

3. A smart welding apparatus for fire extinguisher cylinders as claimed in claim 2, wherein: The fixing mounting seat (4) is provided with an annular piston groove (30), a push plug ring (31) is movably arranged in the annular piston groove (30), one end of the annular piston groove (30) away from the welding cantilever seat (5) is provided with a second air inlet groove (38), and one end of the push plug ring (31) away from the second air inlet groove (38) is provided with a reset spring (32).

4. The intelligent welding apparatus for fire extinguisher tank body of claim 3, wherein: One side of the annular piston groove (30) is provided with an annular adapter groove, the push plug ring (31) located in one side of the annular adapter groove is provided with a push-pull ring, one side of three positioning insertion rods (33) is connected with one side of the push-pull ring, one side of the three positioning insertion rods (33) penetrates through the welding cantilever seat (5) and is inserted into the adjusting rotating groove (13), one side of the adjusting rotating ring (14) is provided with three tapered positioning grooves (34), one end of the three positioning insertion rods (33) away from the push-pull ring is in a tapered structure, and the tapered structure of one end of the three positioning insertion rods (33) is inserted into the three tapered positioning grooves (34) respectively.

5. A smart welding apparatus for fire extinguisher cylinders as claimed in claim 4, wherein: One side of the annular adapter groove penetrates through the fixing mounting seat (4) to form an annular drainage groove (35), one side of the fixing mounting seat (4) located in the welding cavity groove (2) is provided with a plurality of suction grooves (36), the plurality of suction grooves (36) are communicated with the annular drainage groove (35), and the fixing mounting seat (4) located in one side of the annular drainage groove (35) is provided with a collection cover (37) through threaded connection.

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