A bellows intelligent processing argon arc welding device and welding process thereof

Abstract

The present invention provides a bellows intelligent processing argon arc welding device and a welding process thereof, belonging to the technical field of bellows argon arc welding. The invention includes an operating table and a bellows fitting, and a welding mechanism for welding the bellows fitting is arranged on the top of the mounting frame, and also includes: a clamping and grinding assembly, a knocking stress removal assembly, and an adaptive counterweight assembly; through the rotation of the bellows fitting and the intermittent contact between the first and second guide wheels, the intermittent knocking on the surface of the bellows fitting is realized, the internal stress generated during the welding process is eliminated, and the deformation, cracks and other defects that may occur after welding are reduced; by utilizing the deformation of the telescopic cylinder and the balance adjustment mechanism of the air pressure and the spring force, the device can automatically adjust the knocking force of the knocking block on the bellows fitting. For bellows fittings with smaller diameters, a smaller knocking force is used to avoid overheating and deformation; for bellows fittings with larger diameters, the knocking force is increased to ensure the full fusion of the welding joint and the stability of the quality.

Description

Technical Field

[0001] The present invention relates to the technical field of bellows argon arc welding, and in particular to a bellows intelligent processing argon arc welding device and a welding process thereof. Background Art

[0002] The bellows is a metal hose with sufficient elasticity, high pressure resistance and corrosion resistance, and is widely used in the fields of conveying liquids, gases and steam. Its overall softness may cause displacement or distortion during use, so it has high requirements for the connection method. In order to meet this demand, the joints of the bellows are usually connected by welding. Among the many welding methods, argon arc welding stands out with its unique advantages and becomes the first choice for bellows joint welding. Argon arc welding uses argon as a shielding gas to form a protective layer during the welding process, which effectively isolates the oxygen and other impurities in the air from the weld, thereby avoiding oxidation and contamination of the weld, ensuring the high quality of the weld, and is very suitable for welding thin-walled stainless steel pipes such as bellows.

[0003] The current bellows argon arc welding device has the following shortcomings in actual use: First, there is a lack of targeted stress release mechanism. During the welding process, due to temperature changes and phase changes of metal structure, certain stresses will be generated inside the bellows. If these stresses are not released in time, they may cause deformation, cracking and other problems of the welded parts during subsequent use; second, the magnetic field generated during the welding process may absorb impurities such as rust and oxides near the molten pool into the molten pool, resulting in defects such as weld inclusions and pores.

[0004] How to invent an intelligent bellows processing argon arc welding device to solve these problems has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a bellows intelligent processing argon arc welding device, aiming to solve the problems mentioned in the above background.

[0006] The present invention is achieved in that:

[0007] The present invention provides a bellows intelligent processing argon arc welding device, comprising an operating table and a bellows fitting, wherein a mounting frame and a support seat are arranged on the operating table, a reducer is arranged on the support seat, and an output end of the reducer is fixedly connected to a support plate, the support plate is hinged to the support seat, a welding mechanism for welding the bellows fitting is arranged on the top of the mounting frame, and further comprising:

[0008] Clamping and grinding assembly: The clamping and grinding assembly is arranged on the support plate, and the clamping and grinding assembly is used to rotate and clamp the corrugated pipe fittings and to grind the welding parts of the corrugated pipe fittings;

[0009] Stress-relieving knocking component: The stress-relieving knocking component is arranged on one side of the clamping and grinding component. When the bellows is welded, the stress-relieving knocking component eliminates the stress at the welding point through relative movement with the clamping and grinding component.

[0010] Adaptive counterweight assembly: The adaptive counterweight assembly is arranged inside the stress relief assembly, and the adaptive counterweight assembly controls the knocking force of the stress relief assembly according to the specifications of the bellows fitting.

[0011] Preferably, the clamping and grinding assembly includes a bracket and a limit shell fixedly arranged on a support plate, the top of the bracket is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a conical cylinder, a gear ring and two gears are rotatably arranged inside the limit shell, the gear ring is meshed with the gears, a motor, a driving wheel and a positioning rod are installed on the side of the limit shell away from the conical cylinder, and a cover plate is installed on the side of the limit shell facing the conical cylinder, a connecting rod is fixedly connected to the inside of the gear, and the end of the connecting rod passes through the side walls of the limit shell and the cover plate.

[0012] Preferably, the output end of the motor is fixedly connected to one of the driving wheels, one end of the connecting rod away from the conical cylinder is fixedly connected to the other driving wheels, the other end of the connecting rod is fixedly connected to a pulley, and the multiple driving wheels are transmission connected.

[0013] Preferably, a limiting groove is symmetrically installed on one side of the cover plate facing the conical cylinder, a movable rod is slidably arranged inside the limiting groove, the movable rod is fixed to the limiting groove by a nut, and a grinding belt for grinding the corrugated pipe fittings is sleeved on the pulley and the movable rod.

[0014] Preferably, a plurality of slide grooves are arranged in an annular shape on the gear ring, an electromagnet is fixedly installed on the top of the slide groove, a clamp block is slidably arranged inside the slide groove, the electromagnet and the top of the clamp block are elastically connected by a first spring, an elastic clamp is arranged at the bottom of the clamp block, and when the electromagnet is energized, the opposite surface of the electromagnet and the clamp block has the same polarity magnetism, and the clamp block in the initial state is located outside the inner ring of the gear ring.

[0015] Preferably, the knocking stress relief assembly includes an adjustment groove arranged on the side wall of the limiting shell away from the conical cylinder and a connecting cylinder fixedly connected to one side of the clamping block, a positioning plate is movably installed inside the adjusting groove, the positioning plate is fixed to the limiting shell by bolts, one end of the positioning plate located outside the adjusting groove is rotatably connected to the first guide wheel, and a second guide wheel is rotatably arranged on the connecting cylinder, one side of the second guide wheel is in contact with the side wall of the clamping block, and the other side is fixedly connected to the knocking block.

[0016] Preferably, when the bottom of the clamping block abuts against the surface of the bellows, the outer end face of the second guide wheel and the inner end face of the first guide wheel are on concentric circles, when the bottom of the clamping block abuts against the surface of the bellows, there is a gap between the second guide wheel and the surface of the bellows, and when the second guide wheel rotates, the end of the knocking block abuts against the surface of the bellows.

[0017] Preferably, the adaptive counterweight assembly includes a telescopic cylinder, an air guide channel and an active cavity arranged inside the knocking block, the upper end of the telescopic cylinder is fixedly connected to the electromagnet, the lower end of the telescopic cylinder is fixedly connected to the clamping block, an air vent is penetrated through the lower end of the telescopic cylinder, the air guide channel is located inside the connecting cylinder and the clamping block, and the end of the air guide channel penetrates the side walls of the second guide wheel and the knocking block.

[0018] Preferably, the first spring is located inside the telescopic cylinder, the top of the movable chamber is fixedly connected to the second spring, the lower end of the second spring is fixedly connected to a counterweight block, the movable chamber is divided into an upper and lower part by the counterweight block, the air vent and the air guide channel are connected to the upper part of the movable chamber, the counterweight block is sealed and slidably connected to the inner cavity of the movable chamber, the gap between the counterweight block and the bottom of the movable chamber is large when the telescopic cylinder is relatively extended, and the distance between the counterweight block and the bottom of the movable chamber is small when the telescopic cylinder is relatively compressed.

[0019] A welding process of a bellows intelligent processing argon arc welding device comprises the following steps:

[0020] S1: The electromagnet is powered off, one end of the bellows is inserted from the inner side of the gear ring and is pressed against the conical cylinder. The position of the conical cylinder is properly adjusted by the cylinder so that the welding area is directly above the pulley. Then the electromagnet is powered on, and the clamp moves downward to fix the bellows.

[0021] S2: Adjust the position of the movable rod in the limit groove to adapt to the bellows fittings of different specifications, start the motor, drive the gear ring and the pulley to rotate through the driving wheel and the connecting rod, thereby driving the bellows fittings and the grinding belt to rotate, and realize the grinding treatment of the welding area of ​​the bellows fittings;

[0022] S3: After grinding, adjust the position of the positioning plate appropriately, remove the grinding belt, move the welding mechanism to weld the ground area, start the motor, and drive the bellows to rotate through the gear ring and the clamping block. During this process, the second guide wheel will intermittently contact and rotate with the first guide wheel. The rotation of the second guide wheel will drive the knocking block to intermittently knock on the surface of the bellows to eliminate the stress generated during the welding of the bellows.

[0023] S4: For bellows fittings of different specifications, the stress generated during welding will also change. The relative position of the counterweight block in the striking block can be directly controlled by the relative extension and contraction state of the telescopic tube, and then the striking force of the striking block on the bellows fitting can be controlled to ensure the welding quality.

[0024] The beneficial effects of the present invention are:

[0025] Through the rotation of the bellows and the intermittent contact between the first and second guide wheels, intermittent knocking on the surface of the bellows is achieved. This knocking action effectively eliminates the internal stress generated during welding, reduces deformation, cracks and other defects that may occur after welding, and improves the stability of the welded joint and the service life of the product; utilizing the deformation of the telescopic cylinder and the balance adjustment mechanism of air pressure and spring force, the device can automatically adjust the knocking force of the knocking block on the bellows. For bellows with smaller diameters, a smaller knocking force is used to avoid overheating and deformation; for bellows with larger diameters, the knocking force is increased to ensure full fusion of the welded joint and stability of quality.

[0026] When the electromagnet is energized, the clamping block will be pushed to the outside of the slide due to the repulsive effect of the same-polar magnetism, thereby clamping the bellows fitting placed in the center of the gear ring. By cooperating with the tapered cylinder, the welding clamping stability of the bellows fitting is improved; through the synchronous rotation of the bellows fitting and the grinding belt, the welding area of ​​the bellows fitting is evenly polished to remove surface burrs, oxides, etc., providing a clean and flat welding surface for subsequent welding operations, which helps to reduce the possibility of impurities being sucked into the molten pool by the arc during welding. After welding, the weld can also be polished to eliminate potential defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of a bellows intelligent processing argon arc welding device provided by an embodiment of the present invention;

[0029] Figure 2 It is a front structural schematic diagram of a bellows intelligent processing argon arc welding device provided by an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the distribution structure of a positioning plate of a bellows intelligent processing argon arc welding device provided in an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the motion trajectory structure of the second guide wheel of a bellows intelligent processing argon arc welding device provided in an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of a bellows intelligent processing argon arc welding device during grinding provided by an embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of a bellows intelligent processing argon arc welding device during welding provided by an embodiment of the present invention;

[0034] Figure 7 It is a partial structural schematic diagram of a bellows intelligent processing argon arc welding device provided by an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the cross-sectional structure of a gear ring of a bellows intelligent processing argon arc welding device provided in an embodiment of the present invention;

[0036] Fig. 9 The invention provides a bellows intelligent processing argon arc welding device. Figure 8 The enlarged structural diagram at A in the middle;

[0037] Fig.10 It is a schematic diagram of the front cross-sectional structure of a bellows intelligent processing argon arc welding device provided by an embodiment of the present invention;

[0038] Fig.11 The invention provides a bellows intelligent processing argon arc welding device. Fig.10 The enlarged structural diagram at B in the middle;

[0039] Fig.12 It is a schematic diagram of the cross-sectional structure of a striking block of a bellows intelligent processing argon arc welding device provided in an embodiment of the present invention.

[0040] In the figure: 1. operating table; 2. mounting frame; 3. support plate; 4. motor; 5. adjusting groove; 6. gear ring; 7. telescopic cylinder; 8. electromagnet; 9. knocking block; 10. bellows; 11. support seat; 12. reducer; 21. welding mechanism; 31. bracket; 32. cylinder; 33. conical cylinder; 34. limiting shell; 35. cover plate; 36. limiting groove; 37. movable rod; 41. driving wheel; 42. positioning rod; 43. gear; 44. connecting rod; 45. pulley; 46. grinding belt; 51. positioning plate; 52. first guide wheel; 61. slide groove; 62. clamping block; 63. second guide wheel; 64. connecting cylinder; 65. air guide channel; 71. first spring; 72. vent; 91. counterweight block; 92. second spring; 93. movable cavity. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1, refer to Figure 1-Figure 9 A bellows intelligent processing argon arc welding device comprises an operating table 1 and a bellows fitting 10, wherein a mounting frame 2 and a support seat 11 are arranged on the operating table 1, a reducer 12 is arranged on the support seat 11, and a support plate 3 is fixedly connected to the output end of the reducer 12, the support plate 3 is hinged to the support seat 11, and the inclination of the support plate 3 can be controlled by the reducer 12, and a welding mechanism 21 for welding the bellows fitting 10 is arranged on the top of the mounting frame 2, and further comprises:

[0043] Clamping and grinding assembly: The clamping and grinding assembly is arranged on the support plate 3, and is used to rotate and clamp the corrugated pipe fitting 10 and to grind the welding part of the corrugated pipe fitting 10;

[0044] Stress-relieving knocking assembly: The stress-relieving knocking assembly is arranged on one side of the clamping and grinding assembly. When the bellows 10 is welded, the stress-relieving knocking assembly eliminates the stress at the welding point through relative movement with the clamping and grinding assembly.

[0045] Adaptive counterweight assembly: The adaptive counterweight assembly is arranged inside the stress relief assembly, and the adaptive counterweight assembly controls the knocking force of the stress relief assembly according to the specifications of the bellows 10.

[0046] Furthermore, the clamping and grinding assembly includes a bracket 31 and a limiting shell 34 fixedly arranged on the support plate 3, the top of the bracket 31 is fixedly connected to a cylinder 32, the output end of the cylinder 32 is fixedly connected to a conical tube 33, and the bellows fitting 10 can be effectively supported by the cooperation of the cylinder 32 and the conical tube 33. The internal rotation of the limiting shell 34 is provided with a ring gear 6 and two gears 43, the ring gear 6 is meshed with the gear 43, the side of the limiting shell 34 away from the conical tube 33 is installed with a motor 4, a driving wheel 41 and a positioning rod 42, and the side of the limiting shell 34 facing the conical tube 33 is installed with a cover plate 35, the inside of the gear 43 is fixedly connected with a connecting rod 44, and the end of the connecting rod 44 passes through the side walls of the limiting shell 34 and the cover plate 35.

[0047] The output end of the motor 4 is fixedly connected to one of the driving wheels 41, one end of the connecting rod 44 away from the conical cylinder 33 is fixedly connected to the other driving wheels 41, and the other end of the connecting rod 44 is fixedly connected to a pulley 45. The multiple driving wheels 41 are connected in transmission. By starting the motor 4, the driving wheel 41 and the connecting rod 44 can be controlled to rotate.

[0048] A limiting groove 36 is symmetrically installed on one side of the cover plate 35 facing the conical cylinder 33, and a movable rod 37 is slidably arranged inside the limiting groove 36. The movable rod 37 is fixed to the limiting groove 36 by a nut, and a grinding belt 46 for grinding the corrugated pipe fitting 10 is sleeved on the pulley 45 and the movable rod 37. The relative position of the grinding belt 46 can be controlled by adjusting the position of the movable rod 37 in the limiting groove 36.

[0049] It should be noted that a plurality of slide grooves 61 are arranged in an annular shape on the gear ring 6, an electromagnet 8 is fixedly installed on the top of the slide groove 61, a clamping block 62 is slidably arranged inside the slide groove 61, and the electromagnet 8 is elastically connected to the top of the clamping block 62 through a first spring 71, so that the clamping force can be buffered and adjusted to a certain extent, and an elastic clamp is arranged at the bottom of the clamping block 62, which helps to better fix the corrugated pipe 10 and prevent sliding or deviation during processing (such as grinding, welding), and when the electromagnet 8 is energized, the opposite surface of the clamping block 62 is the same polarity magnetic In the initial state, the clamping block 62 is located outside the inner ring of the gear ring 6. By arranging a plurality of slide grooves 61 on the gear ring 6 and installing an electromagnet 8 and a slidable clamping block 62 in each slide groove 61, the design allows the clamping mechanism to be adaptively adjusted according to the different diameters of the bellows 10. When the electromagnet 8 is energized, the clamping block 62 will be pushed to the outside of the slide groove 61 due to the repulsive effect of the same-polar magnetism, thereby clamping the bellows 10 placed in the center of the gear ring 6. By cooperating with the tapered cylinder 33, the clamping stability of the bellows 10 is improved.

[0050] In this embodiment, in the initial state, the electromagnet 8 is in a power-off state, and the clamping block 62 is kept outside the inner circle of the slide groove 61 due to the elastic force of the first spring 71. At this time, the internal space of the gear ring 6 is open, allowing the bellows 10 to be inserted.

[0051] Insertion of the bellows 10: Insert one end of the bellows 10 from the inner side of the gear ring 6 and make it abut against the bottom of the tapered tube 33. The design of the tapered tube 33 helps to guide the accurate insertion of the bellows 10 and perform preliminary positioning.

[0052] Adjust the position of the conical cylinder 33: By operating the cylinder 32, adjust the relative position of the conical cylinder 33 to ensure that the welding area of ​​the corrugated pipe 10 is located just above the pulley 45. This step is for the accuracy of subsequent grinding and welding operations.

[0053] The electromagnet 8 is energized for clamping: after the electromagnet 8 is energized, the clamping block 62 moves downward due to the repulsive force due to the same-polarity magnetic setting. Through the buffering effect of the first spring 71, the bottom elastic clamp of the clamping block 62 fits tightly against the outer wall of the bellows 10 to achieve a firm clamping of the bellows 10. This design allows the clamping mechanism to be adaptively adjusted according to the diameter of the bellows 10 to ensure the stability and reliability of the clamping.

[0054] Adjust the position of the grinding belt 46: adjust the position of the movable rod 37 in the limit groove 36 and fix it with a nut to adapt to corrugated pipe fittings 10 of different specifications. This step is to ensure that the grinding belt 46 can fit tightly in the welding area of ​​the corrugated pipe fitting 10 to achieve an effective grinding effect.

[0055] Start the motor 4, and the output end of the motor 4 drives one of the driving wheels 41 to rotate. Since the multiple driving wheels 41 are connected by transmission (such as chains, belts, etc.), all the driving wheels 41 will rotate synchronously. The driving wheel 41 drives the gear 43 and the pulley 45 to rotate through the connecting rod 44. Since the ring gear 6 is engaged with the gear 43, the ring gear 6 will also rotate accordingly.

[0056] The bellows 10 and the grinding belt 46 rotate synchronously: since the bellows 10 is clamped in the gear ring 6, as the gear ring 6 rotates, the bellows 10 will also rotate synchronously. At the same time, the grinding belt 46 is sleeved on the pulley 45 and the movable rod 37. As the pulley 45 rotates, the grinding belt 46 will also be close to the welding area of ​​the bellows 10 for grinding. Through the synchronous rotation of the bellows 10 and the grinding belt 46, the welding area of ​​the bellows 10 is evenly ground, and surface burrs, oxides, etc. are removed, providing a clean and flat welding surface for subsequent welding operations, which helps to reduce the possibility of impurities being sucked into the molten pool by the arc during welding. After welding is completed, the weld can also be ground to eliminate potential defects.

[0057] Example 2, refer to Figure 4-Figure 10 The knocking stress relief component includes an adjusting groove 5 arranged on the side wall of the limiting shell 34 away from the conical cylinder 33 and a connecting cylinder 64 fixedly connected to one side of the clamping block 62. A positioning plate 51 is movably installed inside the adjusting groove 5. The positioning plate 51 is fixed to the limiting shell 34 by bolts. One end of the positioning plate 51 located outside the adjusting groove 5 is rotatably connected to the first guide wheel 52. A second guide wheel 63 is rotatably arranged on the connecting cylinder 64. One side of the second guide wheel 63 is in contact with the side wall of the clamping block 62, and the other side is fixedly connected to the knocking block 9.

[0058] It should be noted that when the bottom of the clamp block 62 abuts against the surface of the bellows 10, the outer end face of the second guide wheel 63 and the inner end face of the first guide wheel 52 are on a concentric circle, ensuring that when the second guide wheel 63 rotates with the ring gear 6, it will contact the first guide wheel 52, thereby driving it to rotate. When the bottom of the clamp block 62 abuts against the surface of the bellows 10, there is a gap between the second guide wheel 63 and the surface of the bellows 10. When the second guide wheel 63 rotates, the end of the knocking block 9 abuts against the surface of the bellows 10, ensuring that the knocking block 9 can effectively knock on the bellows 10 at this time, and this knocking will be transmitted to the welding area of ​​the bellows 10 to eliminate welding stress.

[0059] In this embodiment, after the grinding operation is completed, the relative position between the first guide wheel 52 and the second guide wheel 63 can be fine-tuned by adjusting the position of the positioning plate 51 in the adjustment groove 5 to adapt to the subsequent tapping operation, and the grinding belt 46 is removed to prepare for the welding operation, and the welding mechanism 21 is moved to the grinding area to prepare for welding.

[0060] Start the motor 4, which drives the gear ring 6 and the clamp 62 to rotate through the transmission mechanism, thereby driving the bellows 10 to rotate synchronously. As the bellows 10 rotates, the second guide wheel 63 will periodically contact and rotate relative to the first guide wheel 52. This intermittent contact is determined by the rotation of the bellows 10 and the relative position relationship between the first and second guide wheels 63.

[0061] When the second guide wheel 63 contacts and rotates with the first guide wheel 52, the second guide wheel 63 will drive the knocking block 9 to rotate together. Since the end of the knocking block 9 is against the surface of the bellows 10, the knocking block 9 will intermittently knock on the surface of the bellows 10. Such intermittent knocking helps to eliminate the internal stress that may be generated in the bellows 10 during the welding process, thereby improving the quality and stability of the welded joint.

[0062] By utilizing the rotation of the bellows 10 and the intermittent contact between the first and second guide wheels 63, intermittent tapping of the surface of the bellows 10 is achieved. This tapping action effectively eliminates the internal stress generated during the welding process and improves the quality and stability of the welded joint. Through continuous rotation and tapping, the stress on the surface of the bellows 10 is gradually released and eliminated, which helps to reduce defects such as deformation and cracks that may occur after welding and improve the overall performance of the product.

[0063] Example 3, refer to Figure 8-Figure 12The adaptive counterweight assembly includes a telescopic cylinder 7, an air guide channel 65 and an active cavity 93 arranged inside the knocking block 9. The upper end of the telescopic cylinder 7 is fixedly connected to the electromagnet 8, and the lower end of the telescopic cylinder 7 is fixedly connected to the clamping block 62. The space inside the telescopic cylinder 7 changes with the degree of deformation. A vent 72 is penetrated at the lower end of the telescopic cylinder 7. The air guide channel 65 is located inside the connecting cylinder 64 and the clamping block 62. The end of the air guide channel 65 penetrates the side wall of the second guide wheel 63 and the knocking block 9.

[0064] Furthermore, the first spring 71 is located inside the telescopic cylinder 7, the top of the active cavity 93 is fixedly connected to the second spring 92, the lower end of the second spring 92 is fixedly connected to the counterweight 91, the active cavity 93 is divided into an upper and a lower part by the counterweight 91, the air vent 72 and the air guide channel 65 are connected to the upper part of the active cavity 93, when the telescopic cylinder 7 is relatively extended, the internal space of the telescopic cylinder 7 is increased, and the gas in the upper part of the active cavity 93 is drawn into the internal space of the telescopic cylinder 7 through the air guide channel 65 and the air vent 72; when the telescopic cylinder 7 is relatively compressed, the internal space of the telescopic cylinder 7 is reduced, and the gas inside the telescopic cylinder 7 is discharged into the upper part of the active cavity 93 through the air vent 72 and the air guide channel 65, under the action of the air pressure, the counterweight 91 is pressed downward, thereby increasing the knocking force of the knocking block 9.

[0065] It should be noted that the sealed sliding connection between the counterweight 91 and the inner cavity of the active cavity 93 ensures that the air pressure can directly act on the counterweight 91. When the telescopic tube 7 is relatively extended, the gap between the counterweight 91 and the bottom of the active cavity 93 is large. At this time, it means that the diameter of the bellows 10 is small, and the knocking force is correspondingly reduced. When the telescopic tube 7 is relatively compressed, the distance between the counterweight 91 and the bottom of the active cavity 93 is small. At this time, it means that the diameter of the bellows 10 is large, and the knocking force is correspondingly increased.

[0066] In this embodiment, when the clamping block 62 clamps the bellows 10, the telescopic tube 7 will be deformed accordingly according to the diameter of the bellows 10. In the initial state, the air pressure in the active chamber 93 and the elastic force of the second spring 92 are in a balanced state, so that the counterweight 91 remains in a relatively stable position. However, when the telescopic tube 7 is deformed, this balance will be broken.

[0067] When the diameter of the bellows 10 is small, the telescopic tube 7 will be relatively extended. At this time, the space inside the telescopic tube 7 increases, and the gas in the upper part of the active cavity 93 will be drawn into the telescopic tube 7 through the air guide channel 65 and the air vent 72, causing the air pressure in the upper part of the active cavity 93 to decrease. Due to the decrease in air pressure, the position of the counterweight 91 originally maintained by the air pressure and spring force will change. When the spring force is relatively strong, the counterweight 91 will move slightly upward to maintain a new equilibrium state. At this time, the gap between the counterweight 91 and the bottom of the active cavity 93 is large, indicating that the knocking force is relatively small, which is suitable for bellows 10 with a smaller diameter.

[0068] If the diameter of the corrugated pipe fitting 10 is small and the area of ​​the welding joint is small, the required heat input is also reduced accordingly. Too strong knocking may cause the weld to overheat, burn through or produce excessive welding deformation, which will affect the welding quality. Therefore, a smaller knocking force can better control the welding process and ensure the integrity and stability of the weld. In addition, it also avoids the situation where excessive knocking may introduce unnecessary stress and deformation, thereby improving the mechanical properties and appearance quality of the pipe fittings.

[0069] When the diameter of the bellows fitting 10 is larger, the telescopic cylinder 7 will be relatively compressed. At this time, the space inside the telescopic cylinder 7 is reduced. The gas inside the telescopic cylinder 7 will be discharged into the upper part of the active chamber 93 through the vent 72 and the air guide channel 65 during the compression process. As the gas enters the upper part of the active chamber 93, the air pressure increases, pushing the counterweight block 91 to move downward and stretching the second spring 92. The downward movement of the counterweight block 91 increases the knocking force of the knocking block 9 on the bellows fitting 10. When the counterweight block 91 is closer to the bottom end of the knocking block 9, during the knocking process, the gravity of the counterweight block 91 will be more converted into kinetic energy of the bottom end of the knocking block 9, because at this time the angle between the gravity line and the knocking action line is smaller, and the force arm is shorter, so that the component of gravity in the knocking direction is larger. Since the component of gravity in the knocking direction increases, the force that the knocking block 9 can provide when knocking is also greater. In this way, the counterweight block 91 can provide greater force when knocking to meet the welding requirements of bellows fittings 10 with larger diameters.

[0070] If the diameter of the bellows 10 is larger, the area of ​​the welded joint will also increase accordingly. In order to ensure that the joint is completely fused and avoid defects such as incomplete fusion and incomplete penetration, greater heat input and stronger welding impact force are required to ensure sufficient contact and melting between the metals. At this time, stronger knocking can help improve the flow of the molten pool and promote the diffusion and mixing of the metals, thereby improving the quality of the welded joint. In addition, due to the larger volume and mass, the thermal stress and deformation generated during the welding process are also more significant. Stronger knocking force helps to alleviate the concentration of welding stress to a certain extent and reduce welding deformation, thereby maintaining the shape and dimensional accuracy of the bellows 10.

[0071] It should be noted that, no matter relative elongation or compression deformation, the deformation of the telescopic tube 7 will break the original equilibrium between the air pressure and the spring force. However, the system will establish a new equilibrium by moving the counterweight block 91 and adjusting the elastic force of the second spring 92. This automatic adjustment mechanism ensures that corrugated pipe fittings 10 of different diameters can be properly tapped during welding.

[0072] The adaptive counterweight assembly can automatically adjust the relative position of the counterweight block 91 in the knocking block 9, thereby controlling the knocking force of the knocking block 9 on the corrugated pipe fitting 10. This automatic adjustment mechanism ensures that corrugated pipe fittings 10 of different diameters can receive proper knocking treatment during welding, effectively eliminating welding stress and improving the quality and stability of the welded joint.

[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bellows intelligent processing argon arc welding device, comprising an operating table (1) and a bellows fitting (10), wherein the operating table (1) is provided with a mounting frame (2) and a support seat (11), wherein the support seat (11) is provided with a reducer (12), and the output end of the reducer (12) is fixedly connected with a support plate (3), wherein the support plate (3) is hinged to the support seat (11), and a welding mechanism (21) for welding the bellows fitting (10) is provided at the top of the mounting frame (2), wherein the welding mechanism (21) is provided at the top of the mounting frame (2), wherein the welding mechanism (21) is provided at the top of the mounting frame (2), and the welding mechanism (21) is provided at the top of the mounting frame (2), wherein the welding mechanism (21) is provided at the top of the mounting frame (2), and the welding mechanism (21) is provided at the top of the mounting frame (2), and the welding mechanism (21) is arranged ... Also includes: Clamping and grinding assembly: the clamping and grinding assembly is arranged on the support plate (3), and is used to rotatably clamp the corrugated pipe (10) and to grind the welding part of the corrugated pipe (10); The clamping and grinding assembly comprises a bracket (31) and a limiting shell (34) fixedly arranged on a support plate (3); a cylinder (32) is fixedly connected to the top of the bracket (31); a conical cylinder (33) is fixedly connected to the output end of the cylinder (32); a gear ring (6) and two gears (43) are rotatably arranged inside the limiting shell (34); the gear ring (6) is meshed with the gears (43); a motor (4), a driving wheel (41) and a positioning rod (42) are installed on a side of the limiting shell (34) away from the conical cylinder (33); a cover plate (35) is installed on a side of the limiting shell (34) facing the conical cylinder (33); a connecting rod (44) is fixedly connected to the inside of the gear (43); the end of the connecting rod (44) passes through the side walls of the limiting shell (34) and the cover plate (35); The output end of the motor (4) is fixedly connected to one of the driving wheels (41), one end of the connecting rod (44) away from the conical cylinder (33) is fixedly connected to the other driving wheels (41), the other end of the connecting rod (44) is fixedly connected to a pulley (45), and the plurality of driving wheels (41) are transmission-connected to each other; The gear ring (6) is provided with a plurality of slide grooves (61) in an annular shape, an electromagnet (8) is fixedly mounted on the top of the slide groove (61), a clamping block (62) is slidably arranged inside the slide groove (61), the electromagnet (8) and the top of the clamping block (62) are elastically connected via a first spring (71), an elastic clamp is arranged at the bottom of the clamping block (62), when the electromagnet (8) is energized, the opposite surface of the clamping block (62) has the same polarity, and the clamping block (62) is located outside the inner ring of the gear ring (6) in an initial state; A knocking stress-relieving component: the knocking stress-relieving component is arranged on one side of the clamping and grinding component, and the knocking stress-relieving component eliminates stress at the welding point through relative movement between the knocking stress-relieving component and the clamping and grinding component when the corrugated pipe (10) is welded; The knocking stress relief component comprises an adjusting groove (5) arranged on the side wall of the limiting shell (34) away from the conical cylinder (33) and a connecting cylinder (64) fixedly connected to one side of the clamping block (62); a positioning plate (51) is movably installed inside the adjusting groove (5); the positioning plate (51) is fixed to the limiting shell (34) by bolts; one end of the positioning plate (51) located outside the adjusting groove (5) is rotatably connected to the first guide wheel (52); a second guide wheel (63) is rotatably arranged on the connecting cylinder (64); one side of the second guide wheel (63) is in contact with the side wall of the clamping block (62); and the other side is fixedly connected to the knocking block (9); An adaptive counterweight component: the adaptive counterweight component is arranged inside the stress relief component, and the adaptive counterweight component controls the knocking force of the stress relief component according to the specifications of the bellows (10); The adaptive counterweight assembly comprises a telescopic cylinder (7), an air guide channel (65) and an active chamber (93) arranged inside a knocking block (9); the upper end of the telescopic cylinder (7) is fixedly connected to the electromagnet (8); the lower end of the telescopic cylinder (7) is fixedly connected to the clamping block (62); a vent (72) is provided through the lower end of the telescopic cylinder (7); the air guide channel (65) is located inside the connecting cylinder (64) and the clamping block (62); and the end of the air guide channel (65) passes through the side walls of the second guide wheel (63) and the knocking block (9); The first spring (71) is located inside the telescopic cylinder (7); the top of the movable chamber (93) is fixedly connected to the second spring (92); the lower end of the second spring (92) is fixedly connected to the counterweight (91); the movable chamber (93) is divided into an upper part and a lower part by the counterweight (91); the vent (72) and the air guide channel (65) are connected to the upper part of the movable chamber (93); the counterweight (91) is sealed and slidably connected to the inner cavity of the movable chamber (93); when the telescopic cylinder (7) is relatively extended, the gap between the counterweight (91) and the bottom of the movable chamber (93) is large; when the telescopic cylinder (7) is relatively compressed, the gap between the counterweight (91) and the bottom of the movable chamber (93) is small.

2. The argon arc welding device for intelligent processing of bellows according to claim 1 is characterized in that: A limiting groove (36) is symmetrically installed on one side of the cover plate (35) facing the conical cylinder (33), a movable rod (37) is slidably arranged inside the limiting groove (36), and the movable rod (37) is fixed to the limiting groove (36) by a nut, and a grinding belt (46) for grinding the corrugated pipe (10) is sleeved on the pulley (45) and the movable rod (37).

3. The argon arc welding device for intelligent processing of bellows according to claim 1 is characterized in that: When the bottom of the clamping block (62) abuts against the surface of the bellows (10), the outer end surface of the second guide wheel (63) and the inner end surface of the first guide wheel (52) are on a concentric circle, when the bottom of the clamping block (62) abuts against the surface of the bellows (10), there is a gap between the second guide wheel (63) and the surface of the bellows (10), and when the second guide wheel (63) rotates, the end of the knocking block (9) abuts against the surface of the bellows (10).

4. A welding process of the argon arc welding device for intelligent processing of bellows according to any one of claims 1 to 3, characterized in that: The steps include: S1: The electromagnet (8) is powered off, one end of the bellows (10) is inserted from the inner side of the gear ring (6) and is abutted against the conical cylinder (33), the position of the conical cylinder (33) is appropriately adjusted by the cylinder (32) so that the welding area is directly above the pulley (45), and then the electromagnet (8) is powered on, the clamping block (62) moves downward, and the bellows (10) is fixed; S2: adjusting the position of the movable rod (37) in the limiting groove (36) so as to adapt to the bellows (10) of different specifications, starting the motor (4), driving the gear ring (6) and the pulley (45) to rotate through the driving wheel (41) and the connecting rod (44), thereby driving the bellows (10) and the grinding belt (46) to rotate, thereby achieving grinding treatment of the welding area of ​​the bellows (10); S3: After the grinding is completed, the position of the positioning plate (51) is appropriately adjusted, the grinding belt (46) is removed, the welding mechanism (21) is moved to weld the ground area, the motor (4) is started, and the bellows (10) is driven to rotate through the gear ring (6) and the clamping block (62). During this process, the second guide wheel (63) will intermittently contact and rotate with the first guide wheel (52), and the rotation of the second guide wheel (63) will drive the knocking block (9) to intermittently knock on the surface of the bellows (10) to eliminate the stress generated during the welding of the bellows (10); S4: For bellows fittings (10) of different specifications, the stress generated during welding will also change. The relative position of the counterweight block (91) in the striking block (9) can be directly controlled by the relative telescopic state of the telescopic tube (7), and the striking force of the striking block (9) on the bellows fitting (10) can be controlled to ensure the welding quality.

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