A stainless steel air duct welding device for auxiliary alignment and a welding method

Abstract

The present invention relates to the technical field of auxiliary welding, and specifically to an auxiliary alignment stainless steel air duct welding device and a welding method, including: a workbench, and a welding machine fixedly installed on the workbench. The workbench is also fixedly provided with symmetrically arranged fixing plates; a transverse guide rail fixedly installed on the workbench, and symmetrically arranged protective boxes are slidably installed on the transverse guide rail. A two-way translation assembly connected to the protective boxes is arranged on the fixing plates; a multi-directional clamping mechanism is arranged on the protective boxes; a follow-up rotation assembly is arranged on the multi-directional clamping mechanism; a pushing and releasing mechanism is arranged on the protective boxes and connected to the multi-directional clamping mechanism, and a tensioning assembly connected to the pushing and releasing mechanism is arranged on the multi-directional clamping mechanism. This application can control the rotation of the air duct to assist the welding machine. When the air duct welding is completed, a releasing action can also be performed to achieve the effect of auxiliary welding.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary welding, and in particular to a stainless steel air duct welding device and welding method for auxiliary alignment. Background Technique

[0002] Stainless steel air ducts are mainly used in various process exhaust systems with high airtightness requirements, such as solvent exhaust systems, organic exhaust systems, etc. It has the characteristics of beautiful appearance and smooth inner wall, is mainly made of stainless steel, with a strong material and easy to maintain integrity. In addition, stainless steel air ducts also have excellent physical and chemical properties such as good corrosion resistance, heat resistance and high strength, which enable it to maintain excellent performance in a variety of complex environments.

[0003] Welding is a key link in stainless steel air ducts, and the welding quality must be ensured. Select appropriate welding materials and processes to ensure the strength and tightness of the welded joints. During the welding process, it is necessary to ensure that the circumferential welds are all welded.

[0004] In actual operation, usually two air ducts to be welded are fixed by a clamping device, and the end faces of the two air ducts are controlled to abut against each other, and then circumferential welding is carried out by a welding machine. However, after the existing welding is completed for the air ducts, the air ducts cannot be automatically released. If the clamping device is directly controlled to reset at this time, it is very likely that the air ducts will be broken due to the pulling force, or the problem of wear of the clamping device will occur. If the machine is stopped to control the clamping device to release the air ducts, it will lead to complex operation and low welding efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a stainless steel air duct welding device and welding method for auxiliary alignment to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A stainless steel air duct welding device for auxiliary alignment, comprising:

[0008] A workbench, and a welding machine fixedly installed on the workbench. Two symmetrically arranged fixing plates are also fixedly installed on the workbench;

[0009] It further includes:

[0010] A transverse guide rail fixedly installed on the workbench. Two symmetrically arranged protective boxes are slidably installed on the transverse guide rail. A bidirectional translation assembly connected to the protective boxes is arranged on the fixing plates, and the bidirectional translation assembly is used to drive the protective boxes to move towards or away from each other;

[0011] A multi-directional clamping mechanism is arranged on the protection box. A plurality of clamping blocks are connected to the multi-directional clamping mechanism and are circumferentially and equidistantly distributed. The multi-directional clamping mechanism can clamp an air duct through the clamping blocks;

[0012] A follow-up rotation assembly is arranged on the multi-directional clamping mechanism. When the multi-directional clamping mechanism moves, the follow-up rotation assembly can control the rotation of the air duct through the clamping blocks;

[0013] A pushing and releasing mechanism is arranged on the protection box and is connected to the multi-directional clamping mechanism. A tensioning assembly connected to the pushing and releasing mechanism is arranged on the multi-directional clamping mechanism. When the protection box moves, the pushing and releasing mechanism can adjust the cooperation state between the pushing and releasing mechanism and the multi-directional clamping mechanism through the tensioning assembly to control the clamping blocks to perform a releasing action on the air duct.

[0014] As a further scheme of the present invention: The bidirectional translation assembly includes a bidirectional lead screw rotatably installed on the fixed plate. Threaded sleeves are symmetrically and movably installed on the bidirectional lead screw, and the threaded sleeves are in threaded cooperation with the bidirectional lead screw;

[0015] The bidirectional translation assembly further includes guide posts fixedly installed on the fixed plate. Guide sleeves are symmetrically and slidably installed on the guide posts, and the guide sleeves and the threaded sleeves are fixedly connected to the protection box.

[0016] As a further scheme of the present invention: The multi-directional clamping mechanism includes a support sleeve fixedly installed in the protection box. A movable rod is movably installed in the support sleeve. A chuck is fixed to the end of the movable rod, and a meshing assembly is arranged in the chuck.

[0017] As a further scheme of the present invention: The meshing assembly includes a first rotating rod rotatably installed in the chuck. A first gear is fixed to the first rotating rod. A second rotating rod is rotatably installed on the chuck. A second gear meshing with the first gear is fixed to the second rotating rod. A driven structure connected to the first rotating rod is arranged in the chuck.

[0018] As a further scheme of the present invention: The driven structure includes a spiral disk fixedly installed at the end of the first rotating rod. A plurality of chutes are circumferentially and equidistantly distributed on the chuck. The chutes are slidably connected to the clamping blocks, and a limiting post cooperating with the spiral disk is fixed to the clamping blocks.

[0019] As a further solution of the present invention: The follow-up rotation assembly includes a transverse groove and a spiral groove formed in the movable rod. A first limit block that is slidably fitted with the transverse groove and the spiral groove is fixed inside the support sleeve. A first spring is sleeved on the movable rod and the support sleeve, and two ends of the first spring are respectively abutted against the protection box and the chuck.

[0020] As a further solution of the present invention: The pushing and releasing mechanism includes a rotating sleeve rotatably installed on the side wall of the chuck. A guiding groove is formed in the rotating sleeve. A belt connected to the second rotating rod is sleeved on the rotating sleeve. A pushing ring is fixed on the protection box, and a support assembly connected to the rotating sleeve is arranged on the chuck.

[0021] As a further solution of the present invention: The support assembly includes support columns that are fixedly installed on the chuck and are symmetrically arranged. A movable plate that is slidably connected to the rotating sleeve is slidably installed on the support columns. A second limit block that is slidably connected to the guiding groove is fixed inside the movable plate. A conical column is fixed on the movable plate. A second spring that abuts against the movable plate is sleeved on the support columns;

[0022] It also includes a pushing ring that is fixedly installed on the side wall of the protection box and cooperates with the movable plate.

[0023] As a further solution of the present invention: The tensioning assembly includes a support guide rail fixedly installed on the chuck. A fixed rod is fixed inside the support guide rail. Symmetrically arranged sliding blocks are slidably installed on the fixed rod. A third spring that abuts against the sliding blocks is sleeved on the fixed rod;

[0024] It also includes a limiting groove formed in the sliding block. An arc-shaped support plate is fixed on the sliding block, and the arc-shaped support plate cooperates with the belt.

[0025] A welding method for an auxiliary alignment stainless steel air duct welding device includes the following steps:

[0026] Step 1: Place the air duct to be welded between the clamping blocks, and under the action of the multi-directional clamping mechanism, clamp the air duct through the clamping blocks;

[0027] Step 2: Under the action of the bidirectional translation assembly, control the multi-directional clamping mechanism to move through the protection box, so as to control the air duct to move in the direction of approaching each other through the clamping blocks;

[0028] Step 3: When the two air ducts are abutted against each other, weld the air ducts through a welding machine. At the same time, under the action of the follow-up rotation assembly, control the air duct to rotate through the clamping blocks;

[0029] Step 4: After welding is completed, under the action of the protective box, control the movement of the pushing and releasing mechanism, and under the action of the tensioning assembly, control the cooperation between the pushing and releasing mechanism and the multi-directional clamping mechanism to control the clamping block to perform a releasing action on the air duct.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: This application can clamp the air duct, and when the welding ends of the air ducts abut against each other, control the rotation of the air duct to ensure that the welding machine can perform a comprehensive welding on the circumferential weld. Specifically, when the multi-directional clamping mechanism operates, control the clamping block to move towards the approaching direction to clamp the air duct. After clamping is completed, the bidirectional translation assembly controls the two protective boxes to move towards the approaching direction to control the movement of the air duct through the multi-directional clamping mechanism. When the welding end faces of the two air ducts abut against each other, under the action of the follow-up rotation assembly, control the rotation of the air duct through the multi-directional clamping mechanism to ensure that the welding machine can perform a comprehensive welding on the circumferential weld.

[0031] After the air duct welding is completed and the air duct stops rotating, under the action of the pushing and releasing mechanism, the second rotating rod can be controlled to reverse, so as to control the clamping block to move towards the separating direction, thereby realizing the automatic release of the air duct after welding is completed. This not only effectively solves the problem of cumbersome operation caused by the need to stop the machine for release in the prior art, but also effectively avoids the problem of high breakage rate of welded products caused by the breakage of the welded part of the air duct due to untimely release of the air duct or the problem of reduced service life of the equipment caused by wear between the air duct and the clamping block.

[0032] By controlling the tension and relaxation of the belt, it is possible to achieve the effect of transmission when releasing the air duct and no transmission when there is no need to clamp the air duct, so as to realize that after welding is completed, there is no need to stop the machine to release the air duct, optimizing the overall welding process and ensuring the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Structural schematic diagram of an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0034] Figure 2 Structural schematic diagram of another angle in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0035] Figure 3 Structural schematic diagram of the bidirectional translation assembly and part of the multi-directional clamping mechanism in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0036] Figure 4 Schematic diagram of the connection relationship of part of the multi-directional clamping mechanism, part of the pushing and releasing mechanism, and part of the tensioning assembly in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0037] Figure 5 is Figure 4 An enlarged schematic view of the structure at position A in

[0038] Figure 6 A half-sectional structural schematic diagram of a chuck in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0039] Figure 7 An exploded structural schematic diagram of a part of the multi-directional clamping mechanism in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0040] Figure 8 A schematic diagram of the connection relationship between a part of the pushing and releasing mechanism, a tensioning component, and a part of the multi-directional clamping mechanism in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0041] Figure 9 A partial half-sectional structural schematic diagram in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0042] Figure 10 An exploded structural schematic diagram of a part of the multi-directional clamping mechanism and a part of the pushing and releasing mechanism in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0043] Figure 11 An exploded structural schematic diagram of a tensioning component in an embodiment of a stainless steel air duct welding device for auxiliary alignment.

[0044] In the figure: 1, workbench; 2, welding machine; 3, fixing plate; 4, transverse guide rail; 5, protection box; 6, bidirectional lead screw; 7, threaded sleeve; 8, guide post; 9, guide sleeve; 10, support sleeve; 1001, first limit block; 11, movable rod; 1101, spiral groove; 1102, transverse groove; 12, chuck; 1201, chute; 13, first rotating rod; 14, first gear; 15, spiral disk; 16, clamping block; 17, limit post; 18, second rotating rod; 19, second gear; 20, first spring; 21, rotating sleeve; 2101, first vertical groove; 2102, first inclined groove; 2103, second vertical groove; 2104, second inclined groove; 22, support column; 23, movable plate; 2301, second limit block; 24, second spring; 25, push ring; 26, tapered column; 27, belt; 28, support guide rail; 29, fixed rod; 30, third spring; 31, sliding block; 3101, limit groove; 32, arc-shaped support plate. Detailed implementation mode

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In addition, the elements in the present invention are referred to as "fixed to" or "disposed on" another element, and it can be directly on another element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0047] Please refer to Figures 1 to 11 , in the embodiment of the present invention, a stainless steel air duct welding device for auxiliary alignment includes:

[0048] A workbench 1, and a welding machine 2 fixedly installed on the workbench 1. There are also symmetrically arranged fixing plates 3 fixedly installed on the workbench 1;

[0049] It also includes:

[0050] Please refer to Figures 1 - 3 , a transverse guide rail 4, fixedly installed on the workbench 1. There are symmetrically arranged protective boxes 5 slidably installed on the transverse guide rail 4. A bidirectional translation component for connecting with the protective box 5 is arranged on the fixing plate 3. The bidirectional translation component is used to drive the protective box 5 to move towards or away from each other. The bidirectional translation component includes a bidirectional lead screw 6 rotatably installed on the fixing plate 3. There are symmetrically arranged thread sleeves 7 movably installed on the bidirectional lead screw 6. The thread sleeve 7 is in threaded cooperation with the bidirectional lead screw 6; it also includes a guide post 8 fixedly installed on the fixing plate 3. There are symmetrically arranged guide sleeves 9 slidably installed on the guide post 8. The guide sleeve 9 and the thread sleeve 7 are fixedly connected to the protective box 5.

[0051] Specifically, the welding machine 2 is used to weld the air ducts. During welding, it is necessary to control the end faces of the two air ducts to abut against each other. Therefore, in the initial state, the distance between the two threaded sleeves 7 is the largest, so that the distance between the protective boxes 5 is the largest. Under the action of the multi-directional clamping mechanism and the clamping block 16, the air ducts are fixed. The distance between the two air ducts is the largest. At this time, the bidirectional lead screw 6 rotates and drives the two threaded sleeves 7 to move, thereby driving the protective box 5 to move, so that the guide sleeve 9 moves along the length direction of the guide post 8. The guide sleeve 9 and the guide post 8 play a guiding role to ensure that the threaded sleeve 7 moves along the length direction of the bidirectional lead screw 6 and does not rotate with the bidirectional lead screw 6. The protective box 5 will also control the two air ducts to move in the direction of approaching each other through the multi-directional clamping mechanism and the clamping block 16 until the two air ducts abut against each other. At this time, the air ducts can be welded by the welding machine 2.

[0052] Please refer to Figures 1 - 4 , Figure 6 , Figure 7 , the multi-directional clamping mechanism is arranged on the protective box 5. A plurality of clamping blocks 16 are connected to the multi-directional clamping mechanism and are circumferentially and equidistantly distributed. The multi-directional clamping mechanism can clamp the air ducts through the clamping blocks 16. The multi-directional clamping mechanism includes a support sleeve 10 fixedly installed in the protective box 5. A movable rod 11 is movably installed in the support sleeve 10. A chuck 12 is fixed at the end of the movable rod 11. A meshing component is arranged in the chuck 12. Among them, the meshing component includes a first rotating rod 13 rotatably installed in the chuck 12. A first gear 14 is fixed on the first rotating rod 13. A second rotating rod 18 is rotatably installed on the chuck 12. A second gear 19 meshing with the first gear 14 is fixed on the second rotating rod 18. A driven structure connected to the first rotating rod 13 is arranged in the chuck 12. The above-mentioned driven structure includes a spiral disk 15 fixedly installed at the end of the first rotating rod 13. A plurality of sliding grooves 1201 are arranged on the chuck 12 and are circumferentially and equidistantly distributed. The sliding grooves 1201 are slidably connected with the clamping blocks 16. A limiting post 17 cooperating with the spiral disk 15 is fixed on the clamping block 16.

[0053] It should be noted that before the air duct is welded, the air duct to be welded needs to be clamped. There is a protruding ring arranged in a spiral shape on the spiral disk 15. The limiting column 17 is stuck in the spiral disk 15. In the initial state, under the action of the spiral disk 15, through the limiting column 17, the three clamping blocks 16 are controlled to be at the end of the stroke in the direction away from each other. At the same time, under the action of the follow-up rotation assembly, the movable rod 11 is at the end of the stroke in the direction away from the support sleeve 10, so that the distance between the chuck 12 and the protection box 5 is the largest. When the air duct needs to be clamped, the air duct can be placed between the clamping blocks 16, and the second rotating rod 18 is controlled to rotate. The specific control method includes driving the rotation through the handwheel installed at the end of the second rotating rod 18, thereby driving the second gear 19 to rotate. Since the second gear 19 meshes with the first gear 14, the first rotating rod 13 can be controlled to rotate through the first gear 14. Under the action of the first rotating rod 13, the spiral disk 15 is driven to rotate, so as to control the clamping blocks 16 to move along the length direction of the chute 1201 through the limiting column 17 and move towards the direction of approaching each other. When the three clamping blocks 16 all abut against the air duct, the air duct is fixed. At this time, under the action of the bidirectional translation assembly, the protection box 5 is controlled to move towards the direction of approaching each other, so as to control the chuck 12 to move towards the direction of approaching each other through the support sleeve 10 and the movable rod 11, so as to control the air duct to move through the clamping blocks 16. When the two air ducts abut against each other, the position of the chuck 12 no longer changes, and the protection box 5 continues to move, so that the size of the sleeve fit between the support sleeve 10 and the movable rod 11 increases. At the same time, under the action of the follow-up rotation assembly, the movable rod 11 is controlled to rotate, so as to control the clamping blocks 16 to move through the chuck 12, thereby controlling the rotation of the two abutting air ducts to ensure that the welding machine 2 can comprehensively weld the circumferential welds.

[0054] Preferably, the spiral disk 15 has a self-locking function, which can prevent the position of the clamping block 16 from shaking, resulting in the problem of reduced clamping force on the air duct. After the clamping block 16 clamps the air duct, it can also play an auxiliary positioning effect to ensure that the two air ducts are aligned with each other and are on the same central axis position to ensure the welding quality.

[0055] Please refer to Figure 4 、 Figure 6 、 Figures 8 - 10 The follow-up rotation assembly is arranged on the multi-directional clamping mechanism. The follow-up rotation assembly can control the rotation of the air duct through the clamping block 16 when the multi-directional clamping mechanism moves. The follow-up rotation assembly includes a transverse groove 1102 and a spiral groove 1101 opened on the movable rod 11. A first limiting block 1001 that is slidably fitted with the transverse groove 1102 and the spiral groove 1101 is fixed in the support sleeve 10. A first spring 20 is sleeved on the movable rod 11 and the support sleeve 10. The two ends of the first spring 20 respectively abut against the protection box 5 and the chuck 12.

[0056] Furthermore, when circumferentially welding the air duct, after the welding machine 2 is aligned with the weld seam, it is necessary to control the rotation of the air duct. Therefore, in the initial state, the first spring 20 is in a compressed state, so that the movable rod 11 is at the end of the stroke in the direction away from the support sleeve 10. At this time, the first limit block 1001 is at the end of the stroke on the side of the spiral groove 1101 away from the transverse groove 1102. When the two air ducts approach each other and before they abut, under the action of the first spring 20, the movable rod 11 is always at the end of the stroke in the direction away from the support sleeve 10. When the two air ducts are in contact with each other, the movable rod 11 stops moving. At this time, the support sleeve 10 continues to move, so that the first limit block 1001 slides along the spiral groove 1101 to drive the movable rod 11 to rotate. The movable rod 11 will drive the chuck 12 to rotate, so as to control the rotation of the air duct through the clamping block 16 to ensure that the air duct is fully welded.

[0057] Preferably, when the first limit block 1001 disengages from the spiral groove 1101 and enters the transverse groove 1102, the air duct rotates several circles and the welding of the air duct is completed. At this time, the air duct stops rotating. Under the action of the pushing and releasing mechanism, the second rotating rod 18 can be controlled to reverse, so as to control the clamping block 16 to move in the direction away from each other, so as to realize the automatic release of the air duct after welding is completed.

[0058] Please refer to Figures 1 - 6 、 Figures 8 - 10 The pushing and releasing mechanism is arranged on the protective box 5 and connected to the multi-directional clamping mechanism. The pushing and releasing mechanism includes a rotating sleeve 21 rotatably installed on the side wall of the chuck 12. A guiding groove is formed on the rotating sleeve 21. A belt 27 connected to the second rotating rod 18 is sleeved on the rotating sleeve 21. A pushing ring 25 is fixed on the protective box 5. A supporting component connected to the rotating sleeve 21 is arranged on the chuck 12. Among them, the supporting component includes supporting columns 22 fixedly installed on the chuck 12 and arranged symmetrically. A movable plate 23 slidably connected to the rotating sleeve 21 is slidably installed on the supporting columns 22. A second limit block 2301 slidably connected to the guiding groove is fixed in the movable plate 23. A conical column 26 is fixed on the movable plate 23. A second spring 24 abutting against the movable plate 23 is sleeved on the supporting columns 22; It also includes a pushing ring 25 fixedly installed on the side wall of the protective box 5 and cooperating with the movable plate 23.

[0059] Furthermore, the guiding groove can be divided into four sections, namely the first vertical groove 2101, the first inclined groove 2102, the second vertical groove 2103, and the second inclined groove 2104. The head and tail of the first vertical groove 2101, the first inclined groove 2102, the second vertical groove 2103, and the second inclined groove 2104 are connected to each other in sequence. In the initial state, the second spring 24 is in a compressed state, so that the movable plate 23 is located at the end of the stroke in the direction away from the chuck 12, so that the second limiting block 2301 is located at the connecting position of the first vertical groove 2101 and the second inclined groove 2104. Before the two air ducts are in contact with each other, under the action of the first spring 20, the distance between the protective box 5 and the chuck 12 is maximized, so that the push ring 25 and the movable plate 23 are located at the end of the stroke in the direction away from each other. When the two air ducts are in contact with each other, the movement of the chuck 12 is controlled to stop. At this time, the protective box 5 continues to move, so that the size of the sleeve joint between the support sleeve 10 and the movable rod 11 increases. At the same time, under the action of the spiral groove 1101 and the first limiting block 1001, the rotation of the chuck 12 is controlled to drive the air duct to rotate, ensuring that the welding machine 2 welds along the circumferential direction of the air duct. After the welding is completed, the protective box 5 will also drive the push ring 25 to move. After the welding is completed, the first limiting block 1001 will disengage from the spiral groove 1101 and enter the transverse groove 1102. At this time, the chuck 12 stops rotating, and the push ring 25 will move to the position where it abuts against the movable plate 23 and drive the second limiting block 2301 to move along the length direction of the first vertical groove 2101. The movable plate 23 will also compress the second spring 24. The movable plate 23 will also drive the tensioning assembly to move through the conical column 26. When the tensioning assembly moves to the position where it cooperates with the belt 27, the belt 27 will be tightened. At this time, the second limiting block 2301 disengages from the first vertical groove 2101 and enters the first inclined groove 2102, causing the rotating sleeve 21 to rotate, so as to drive the second rotating rod 18 to rotate through the belt 27. The second rotating rod 18 will control the second gear 19 to move in the opposite direction to the locked air duct, so as to control the clamping blocks 16 to move in the direction away from each other, so that the air duct is released. When the second limiting block 2301 enters the connecting position of the first inclined groove 2102 and the second vertical groove 2103, the air duct completes the release action.

[0060] Preferably, after the air duct is released, the protection box 5 can be controlled to reset. At this time, the first spring 20 elastically releases, so that the position of the chuck 12 remains unchanged, the two air ducts always maintain the abutting position, and the two protection boxes 5 will move away from each other. The protection box 5 will also drive the push ring 25 to move, so that the second spring 24 elastically releases to push the movable plate 23 to always be in a fitting state with the push ring 25. The movable plate 23 will also drive the second limiting block 2301 to move along the length direction of the second vertical groove 2103 and control the movement of the conical column 26. When the conical column 26 is separated from the tensioning assembly, the tensioning assembly resets and is separated from the belt 27 again. At this time, the second limiting block 2301 disengages from the second vertical groove 2103 and enters the second inclined groove 2104, causing the rotating sleeve 21 to rotate towards the initial angle. When the second limiting block 2301 returns to the connection position of the second inclined groove 2104 and the first vertical groove 2101, the push ring 25 is separated from the movable plate 23. At this time, the first limiting block 1001 will disengage from the transverse groove 1102 and enter the spiral groove 1101, causing the chuck 12 to reverse to the initial angle. When the first limiting block 1001 returns to the initial position in the spiral groove 1101, the protection box 5 will drive the chuck 12 to move synchronously through the support sleeve 10 and the movable rod 11. Since the clamping block 16 is separated from the air duct, the air duct will automatically disengage to reduce subsequent operations. It can be seen that after welding, the present application can automatically release the air duct in the clamped state, which not only effectively solves the problem of cumbersome operation caused by the need to stop the machine for release in the prior art, but also effectively avoids the problem of high breakage rate of welded products caused by the breakage of the welded part of the air duct due to untimely release of the air duct or the problem of reduced service life of the equipment caused by wear between the air duct and the clamping block 16.

[0061] Please refer to Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 、 Figure 11 A tensioning assembly connected to the pushing and releasing mechanism is provided on the multi-directional clamping mechanism. When the protection box 5 moves, the pushing and releasing mechanism can adjust the cooperation state between the pushing and releasing mechanism and the multi-directional clamping mechanism through the tensioning assembly to control the clamping block 16 to perform a releasing action on the air duct. The tensioning assembly includes a support guide rail 28 fixedly installed on the chuck 12. A fixed rod 29 is fixed in the support guide rail 28. Symmetrically arranged sliding blocks 31 are slidably installed on the fixed rod 29. A third spring 30 that abuts against the sliding blocks 31 is sleeved on the fixed rod 29. The tensioning assembly further includes a limiting groove 3101 formed in the sliding block 31, and an arc-shaped support plate 32 is fixed on the sliding block 31. The arc-shaped support plate 32 cooperates with the belt 27.

[0062] Specifically, in the initial state, the third spring 30 is in a compressed state, causing the two sliding blocks 31 to be in a state of being in contact with each other. Since the limiting grooves 3101 are provided on both of the two sliding blocks 31, the two limiting grooves 3101 will combine with each other to form a hole. At this time, the arc-shaped support plate 32 is separated from the belt 27, and the belt 27 is in a relaxed state and will not transmit power between the second rotating rod 18 and the rotating sleeve 21. After welding is completed, the pushing ring 25 will drive the movable plate 23 to move, causing the tapered column 26 to move in the direction of the limiting groove 3101. The tapered column 26 is arranged in a conical column shape, with the smallest circumferential radius at the end and the largest circumferential radius in the middle section. When the tapered column 26 is inserted into the limiting groove 3101, the sliding block 31 will give way and compress the third spring 30. The sliding block 31 will also drive the arc-shaped support plate 32 to move. When the sliding block 31 moves to the end of its stroke, the arc-shaped support plate 32 abuts against the belt 27 and makes the belt 27 in a taut state. At this time, the belt 27 can transmit power between the second rotating rod 18 and the rotating sleeve 21. During this process, the second limiting block 2301 is always in the first vertical groove 2101. When the second limiting block 2301 enters the first inclined groove 2102, the rotating sleeve 21 will drive the second rotating rod 18 to rotate through the belt 27 to control the separation of the clamping block 16 from the air duct. When the second limiting block 2301 moves to the connection position of the first inclined groove 2102 and the second vertical groove 2103, the protective box 5 can move towards the initial position. At this time, the tapered column 26 will move in the direction away from the limiting groove 3101, and the third spring 30 will elastically release and drive the two sliding blocks 31 to move towards the initial position to control the arc-shaped support plate 32 to be separated from the belt 27 again, thereby ensuring that when the rotating sleeve 21 rotates in the reverse direction, the belt 27 cannot transmit power. By controlling the tension and relaxation of the belt 27, it is possible to achieve the effect of transmitting power when releasing the air duct and not transmitting power when the air duct does not need to be clamped, so that after welding is completed, there is no need to stop the machine to release the air duct, optimizing the overall welding process and ensuring the welding efficiency.

[0063] A welding method for an auxiliary alignment stainless steel air duct welding device includes the following steps:

[0064] Step 1: Place the air duct to be welded between the clamping blocks 16, and under the action of the multi-directional clamping mechanism, clamp the air duct through the clamping blocks 16;

[0065] Step 2: Under the action of the bidirectional translation assembly, control the multi-directional clamping mechanism to move through the protective box 5, so as to control the air duct to move in the direction of approaching each other through the clamping blocks 16;

[0066] Step 3: When the two air ducts are in contact with each other, weld the air ducts through the welding machine 2. At the same time, under the action of the follow-up rotation assembly, control the air duct to rotate through the clamping blocks 16;

[0067] Step 4: After welding is completed, under the action of the protection box 5, control the movement of the pushing and releasing mechanism, and under the action of the tensioning assembly, control the cooperation between the pushing and releasing mechanism and the multi-directional clamping mechanism, so as to control the clamping block 16 to perform a releasing action on the air duct.

[0068] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0069] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stainless steel duct welding device with auxiliary alignment, comprising: A workbench and a welding machine fixedly mounted on the workbench, wherein a symmetrically arranged fixing plate is also fixed on the workbench; It is characterized by further comprising: A transverse guide rail is fixedly mounted on the workbench, and symmetrically arranged protection boxes are slidably mounted on the transverse guide rail. A bidirectional translation assembly connected to the protection boxes is arranged on the fixed plate, and is used to drive the protection boxes to move toward or away from each other; A multi-directional clamping mechanism is arranged on the protection box, and a plurality of clamping blocks equidistantly distributed in a circle are connected to the multi-directional clamping mechanism, and is used to clamp the air duct; The follow-up rotating assembly is arranged on the multi-directional clamping mechanism, and the follow-up rotating assembly can control the rotation of the air duct through the clamping block when the multi-directional clamping mechanism moves; The push-release mechanism is arranged on the protection box and connected to the multi-directional clamping mechanism. The multi-directional clamping mechanism is provided with a tensioning assembly connected to the push-release mechanism. When the protection box moves, the push-release mechanism can adjust the matching state of the push-release mechanism and the multi-directional clamping mechanism through the tensioning assembly to control the clamping block to release the air duct. The multi-directional clamping mechanism includes a support sleeve fixedly installed in the protective box, a movable rod movably installed in the support sleeve, a chuck fixed at the end of the movable rod, a toothed assembly arranged in the chuck, and a second rotating rod rotatably installed on the chuck; The follow-up rotating assembly includes a transverse groove and a spiral groove provided on the movable rod, a first limit block slidably engaged with the transverse groove and the spiral groove is fixed in the supporting sleeve, a first spring is sleeved on the movable rod and the supporting sleeve, and two ends of the first spring are respectively in contact with the protective box and the chuck; The push release mechanism includes a rotating sleeve rotatably mounted on the side wall of the chuck, a guide groove is opened on the rotating sleeve, a belt connected to the second rotating rod is sleeved on the rotating sleeve, a push ring is fixed on the protective box, and a supporting assembly connected to the rotating sleeve is arranged on the chuck.

2. A stainless steel duct welding device with auxiliary alignment according to claim 1, characterized in that: The bidirectional translation assembly comprises a bidirectional screw rod rotatably mounted on a fixed plate, a symmetrically arranged threaded sleeve is movably mounted on the bidirectional screw rod, and the threaded sleeve is matched with the thread of the bidirectional screw rod; It also includes a guide column fixedly installed on the fixed plate, on which a symmetrically arranged guide sleeve is slidably installed, and the guide sleeve and the threaded sleeve are fixedly connected to the protection box.

3. A stainless steel duct welding device with auxiliary alignment according to claim 2, characterized in that: The gearing assembly also includes a first rotating rod rotatably mounted in the chuck, a first gear is fixed on the first rotating rod, a second gear meshing with the first gear is fixed on the second rotating rod, and a driven structure connected to the first rotating rod is arranged in the chuck.

4. A stainless steel duct welding device with auxiliary alignment according to claim 3, characterized in that: The driven structure includes a vortex disk fixedly mounted on the end of the first rotating rod. The chuck is provided with a plurality of circumferentially equidistantly distributed sliding grooves, the sliding grooves are slidably connected to the clamping block, and a limiting column cooperating with the vortex disk is fixed on the clamping block.

5. A stainless steel duct welding device for auxiliary alignment according to claim 4, characterized in that: The support assembly includes a support column fixedly mounted on the chuck and symmetrically arranged, a movable plate slidably connected to the rotating sleeve is slidably mounted on the support column, a second limit block slidably connected to the guide groove is fixed in the movable plate, a conical column is fixed on the movable plate, and a second spring abutting against the movable plate is sleeved on the support column; It also includes a push ring which is fixedly mounted on the side wall of the protection box and cooperates with the movable plate.

6. A stainless steel duct welding device with auxiliary alignment according to claim 5, characterized in that: The tensioning assembly comprises a support rail fixedly mounted on the chuck, a fixed rod is fixed in the support rail, a symmetrically arranged sliding block is slidably mounted on the fixed rod, and a third spring abutting against the sliding block is sleeved on the fixed rod; It also includes a limiting groove arranged on the sliding block, an arc-shaped supporting plate is fixed on the sliding block, and the arc-shaped supporting plate cooperates with the belt.

7. A welding method for a stainless steel duct welding device with auxiliary alignment, using the stainless steel duct welding device with auxiliary alignment as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Place the air duct to be welded between the clamping blocks, and clamp the air duct through the clamping blocks under the action of the multi-directional clamping mechanism; Step 2: Under the action of the bidirectional translation assembly, the multi-directional clamping mechanism is controlled to move through the protection box, so as to control the air ducts to move in a direction close to each other through the clamping blocks; Step 3: When the two air ducts are in contact with each other, the air ducts are welded by a welding machine, and at the same time, under the action of the follow-up rotating assembly, the rotation of the air duct is controlled by the clamping block; Step 4: After welding is completed, under the action of the protective box, the push-release mechanism is controlled to move, and under the action of the tensioning assembly, the push-release mechanism is controlled to cooperate with the multi-directional clamping mechanism to control the clamping block to release the air duct.

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