Welding head angle adjusting device for chemical machinery

Abstract

The invention provides a welding head angle adjusting device for chemical machinery, and relates to the technical field of mechanical welding, the welding head angle adjusting device comprises an electric arc welding console, a ground wire clamp, an electric wire and a welding gun, the ground wire clamp and the electric wire are both fixedly installed at the side end part of the electric arc welding console, and the welding gun is fixedly installed at the lower end part of the electric wire; an adjusting mechanism for adjusting the angle of the welding gun is arranged on the electric wire, a locking mechanism for locking the adjusting mechanism is arranged on the electric wire, the adjusting mechanism comprises a handheld handle, a C-shaped mounting piece, a gear, a rack and a damping pad, the locking mechanism comprises a lug plate, a pulling plate and a disc, the handheld handle is fixedly mounted at the circumferential end of the electric wire, and the C-shaped mounting piece is fixedly mounted on the lug plate. And a mounting circular groove is formed in the upper end part of the C-shaped mounting piece in a penetrating manner. According to the device, two modes of positioning and limiting the welding gun and unlocking and limiting the welding gun are set, when the welding gun needs to conduct stable welding, the positioning and limiting modes can be selected, and the device can adapt to various welding working conditions and welding requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical welding, and more specifically, relates to a welding head angle adjustment device for chemical machinery. Background Art

[0002] Mechanical arc welding head equipment is a device used in mechanical manufacturing, metal processing and other fields. It uses the high temperature generated by arc discharge to melt the welding rod and the weldment, connecting the two together to achieve the welding function. The equipment is usually composed of a welding power supply, a welding gun (including a welding head), a control system and a cooling system. It is widely used in industries such as automobile manufacturing, shipbuilding, bridge construction, and mechanical processing. It is one of the indispensable important equipment in mechanical manufacturing.

[0003] The Chinese patent publication number is: CN114453713A, an automated arc welding device for plates, which can complete uniform welding of plates while conveying the plates, and has a roller brush cleaning function.

[0004] Existing chemical arc welding equipment has the following disadvantages: 1. Existing arc welding guns cannot adjust the welding gun angle or limit the position after adjustment. The fixed angle leads to uneven arc energy distribution and cannot dynamically adjust the penetration depth and width according to the material thickness and welding position. This easily causes defects such as burn-through, lack of fusion, and undercut, reducing the consistency of weld quality. When facing special-shaped workpieces, multi-position welding (such as vertical welding, overhead welding), or complex welds, the angle fixation requires manual compensation based on the operator's experience, making it difficult to stably match the welding requirements, resulting in poor welding. 2. The angle of the existing arc welding gun is not easy to adjust. When welding in some limited spaces or small spaces, it is mostly dependent on manual adjustment of the gun's own position and the posture of holding the gun. During the welding process, manual control of the welding gun to change its position is also required, which makes welding difficult and easily fatigued, and may affect the welding effect. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a welding head angle adjustment device for chemical machinery to solve the above problems.

[0006] A welding head angle adjustment device for chemical machinery, comprising an arc welding console, a ground wire clamp, an electric wire and a welding gun, wherein the ground wire clamp and the electric wire are fixedly mounted on the side end of the arc welding console, the welding gun is fixedly mounted on the lower end of the electric wire, an adjustment mechanism for adjusting the welding gun angle is provided on the electric wire, and a locking mechanism for locking the adjustment mechanism is provided on the electric wire, the adjustment mechanism comprises a hand-held handle, a C-shaped mounting piece, a gear, a rack and a damping pad, the locking mechanism comprises an ear plate, a pull plate and a disc, the hand-held handle is fixedly mounted on the circumferential end of the electric wire, and a mounting circular groove is penetrated through the upper end of the C-shaped mounting piece. The wire passes through the inner side wall of the mounting circular groove, and the two side ends of the C-shaped mounting piece are respectively penetrated by a first circular groove and a third circular groove, and the side ends of the C-shaped mounting piece are provided with a buckle plate. The ear plate is fixedly mounted on the side end of the C-shaped mounting piece, and the pull plate is located at the upper end of the ear plate. The disc is located at the side end of the first circular groove. One side end of the C-shaped mounting piece is provided with an embedded groove and a second circular groove, the gear is located on the inner side wall of the embedded groove, and the rack sliding is located on the inner side wall of the embedded groove. The number of the damping pads is three, and the damping pad array is located on the inner side wall of the second circular groove. The one side end of the wire is fixedly mounted with the third circular groove. The second rotating shaft is fixedly installed on the other end of the wire, and the two side ends of the hand handle are fixedly installed with an L-shaped fixing rod, and the C-shaped mounting piece is fixedly installed on the lower end of the L-shaped fixing rod. The side end array of the C-shaped mounting piece is provided with at least two limiting grooves, and the upper end of the inner side wall of the embedded groove is provided with a rectangular slide groove, and the two side ends of the inner side wall of the rectangular slide groove are penetrated by a cylindrical groove, and the upper end of the ear plate is penetrated by a movable groove, and the lower end of the pull plate is fixedly installed with an insertion rod, and the insertion rod is slidably installed on the inner side wall of the movable groove, and two third springs are fixedly installed between the pull plate and the ear plate. Spring, the first rotating shaft is rotatably installed on the inner wall of the first circular groove, the second rotating shaft is rotatably installed on the inner wall of the third circular groove, a first telescopic rod and a first spring are fixedly installed between the disk and the first rotating shaft, the first telescopic rod is located on the inner wall of the first spring, two limit columns are fixedly installed on the side end of the disk, and the two limit columns are slidably installed on the inner wall of the limit groove, a pull rod is fixedly installed on the other side end of the disk, three arc blocks are fixedly installed on the side end array of the gear, and a rotating ring is fixedly installed on the side end of the three arc blocks, and the rotating ring is rotatably installed on the inner wall of the second circular groove.

[0007] Preferably, a sliding rod is fixedly installed on the upper end of the rack, a threaded groove is opened through the side end of the rack, the inner walls of the two cylindrical grooves are rotatably installed with the same threaded rod, the threaded rod is threadedly rotatably installed on the inner wall of the threaded groove, and the rack and gear are meshed.

[0008] Preferably, a second spring and a second telescopic rod are fixedly installed between each of the damping pads and the second circular groove, and each of the second telescopic rods is respectively located on the inner side wall of each second spring.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a welding gun with an adjustable angle is provided. When welding is actually performed, there are some restricted spaces, and the workers need to adjust the angle or the gun holding posture. The welding gun also needs to be manipulated to change its position during the welding process, which makes welding difficult and easily fatigues the workers. However, with a non-adjustable welding gun, the angle of the welding gun can be changed according to the shape, space and welding requirements of the workpiece during welding. The worker does not need to adjust the gun holding position and posture, which reduces the operator's fatigue and ensures the quality and stability of welding. Fine-tuning the angle can avoid physical interference and ensure welding accessibility.

[0010] In the present invention, a welding gun is provided with an angle that can be adjusted according to the shape of the welding workpiece, so that different welding methods such as flat welding, vertical welding, push welding and pull welding can be formed during welding. By adjusting the angle of the welding gun, the fluidity of the molten pool can be improved, defects such as undercut and lack of fusion can be reduced, the consistency of the weld geometry can be improved, different welding materials and welding conditions can be adapted, the welding process can be guaranteed, and the difficulty of operating different welding methods can be reduced.

[0011] In the present invention, by providing a dynamically adjustable welding gun, the process of adjusting the welding gun can be simplified during actual welding, so that the welding gun can dynamically change with the curvature of the workpiece during welding, ensuring that the arc always contacts the surface vertically or at the optimal angle, thereby ensuring the welding effect, and there is no need to manually adjust the angle of the welding gun or adjust the gun holding posture repeatedly, which reduces the dependence on the operator's experience and reduces fatigue errors. The amount of deposited material can be accurately controlled through dynamic adjustment, thereby reducing welding material waste.

[0012] In the present invention, a damping pad with adjustable clamping force is matched with an arc block. When the welding gun is in an unlocked state, the clamping effect of the damping pad on the welding gun can be changed by adjusting the clamping effect of the arc block on the damping pad. The clamping force of the damping pad on the welding gun can be changed by rotating the threaded rod according to the needs of dynamic adjustment and stability during welding. The welding gun can switch between different resistance modes during use. In the low damping mode, the welding gun position can be quickly adjusted (coarse positioning stage), reducing operating resistance and improving efficiency. In the high damping mode, the molten pool trajectory can be finely controlled (such as when welding curved surfaces), suppressing hand shaking, avoiding arc offset or molten pool out of control, and facilitating use.

[0013] In the present invention, by providing two methods of positioning limit and unlocking limit for the welding gun, when the welding gun needs to perform stable welding, the positioning limit method can be selected; when the welding gun needs to be dynamically adjusted, the unlocking limit method can be selected to use the welding gun for welding. It can adapt to a variety of welding conditions and welding requirements, and improves the adaptability of the equipment during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the arc welding console of the present invention; Figure 2 It is a structural schematic diagram of the electric wire of the present invention; Figure 3 It is a structural schematic diagram of the handheld handle of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the handheld handle of the present invention; Figure 5 It is a structural schematic diagram of the disc of the present invention; Figure 6 It is a structural schematic diagram of the ear plate of the present invention; Figure 7 It is a structural schematic diagram of the gear of the present invention; Figure 8 It is a schematic diagram of the exploded structure of the gear of the present invention; Figure 9 It is a schematic structural diagram of the rack of the present invention.

[0015] In the figure, the corresponding relationship between the component names and the figure numbers is as follows: 1. Arc welding console; 11. Grounding clamp; 12. Electric wire; 13. Welding gun; 14. First rotating shaft; 15. Second rotating shaft; 2. Handle; 21. L-shaped fixing rod; 3. C-shaped mounting piece; 31. Mounting circular groove; 32. First circular groove; 33. Limiting groove; 34. Embedded groove; 35. Second circular groove; 36. Third circular groove; 37. Rectangular slide; 38. Cylindrical slot; 39, buckle plate; 4, ear plate; 41, movable slot; 5, pull plate; 51, third spring; 52, insert rod; 6, disc; 61, first telescopic rod; 62, first spring; 63, pull rod; 64, limit column; 7, gear; 71, arc block; 72, rotating ring; 8, rack; 81, slide rod; 82, threaded groove; 83, threaded rod; 9, damping pad; 91, second spring; 92, second telescopic rod. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0017] See also Figures 1-9The present invention provides a welding head angle adjustment device for chemical machinery, comprising an arc welding console 1, a ground wire clamp 11, an electric wire 12 and a welding gun 13. The ground wire clamp 11 and the electric wire 12 are fixedly mounted on the side end of the arc welding console 1, and the welding gun 13 is fixedly mounted on the lower end of the electric wire 12. An adjustment mechanism for adjusting the angle of the welding gun 13 is provided on the electric wire 12. When welding a metal workpiece, the arc welding console 1 is first started. The user can adjust the output parameters of the welding power supply, such as welding current and voltage, according to factors such as the material and thickness of the welding workpiece. At the same time, a suitable welding rod or welding wire is selected and installed on the welding gun 13. The user can clamp the ground wire clamp 11 on the metal welding workpiece, and the user can hold the handle 2 to adjust the welding head angle. The welding gun 13 is aimed at the part to be welded, and then the welding power supply is triggered to output high voltage and high current by triggering the switch, so that an arc is formed between the welding rod or welding wire and the workpiece. The high temperature of the arc causes the end of the welding rod or welding wire and the surface of the workpiece to melt rapidly, forming a molten pool. After the arc is successfully struck, the arc is kept burning stably. At the same time, according to a certain welding speed and welding path, the welding gun 13 on the handheld handle 2 is moved to make the welding rod or welding wire continuously melt and fill the molten pool. As the welding gun 13 moves, the molten pool gradually cools and solidifies to form a weld seam. After the weld seam cools, the welding of the workpiece is completed. During the welding process, the moving path of the welding gun 13 should be adjusted in real time according to the shape and size of the weld seam, and the angle of the welding gun 13 should be adjusted according to the shape of the workpiece. The wire 12 is provided with a locking mechanism for locking the adjustment mechanism, the adjustment mechanism includes a hand-held handle 2, a C-shaped mounting member 3, a gear 7, a rack 8 and a damping pad 9, the locking mechanism includes an ear plate 4, a pull plate 5 and a disc 6, the hand-held handle 2 is fixedly mounted on the circumferential end of the wire 12, the upper end of the C-shaped mounting member 3 is penetrated with a mounting circular groove 31, the wire 12 passes through the inner side wall of the mounting circular groove 31, the two side ends of the C-shaped mounting member 3 are respectively penetrated with a first circular groove 32 and a third circular groove 36, the side end of the C-shaped mounting member 3 is provided with a buckle plate 39, the ear plate 4 is fixedly mounted on the C-shaped mounting The side end of the mounting member 3, the pull plate 5 is located at the upper end of the ear plate 4, the disc 6 is located at the side end of the first circular groove 32, and an embedded groove 34 and a second circular groove 35 are opened on one side end of the C-shaped mounting member 3. The gear 7 is located on the inner side wall of the embedded groove 34, and the rack 8 is slidably located on the inner side wall of the embedded groove 34. There are three damping pads 9, and the damping pad 9 array is located on the inner side wall of the second circular groove 35. The first rotating shaft 14 is fixedly installed on one side end of the wire 12, and the second rotating shaft 15 is fixedly installed on the other side end of the wire 12. L-shaped fixing rods 21 are fixedly installed on both side ends of the handle 2. The C-shaped mounting piece 3 is fixedly mounted on the lower end of the L-shaped fixing rod 21. The side end array of the C-shaped mounting piece 3 is provided with at least two limiting grooves 33. The upper end of the inner wall of the embedded groove 34 is provided with a rectangular slide 37. The two side ends of the inner wall of the rectangular slide 37 are penetrated with a columnar groove 38. The upper end of the ear plate 4 is penetrated with a movable groove 41. The lower end of the pull plate 5 is fixedly mounted with an insertion rod 52. The insertion rod 52 is slidably mounted on the inner wall of the movable groove 41. Two third springs 51 are fixedly mounted between the pull plate 5 and the ear plate 4. For some special-shaped workpieces that are difficult to weld, the user The angle of the welding gun 13 may need to be adjusted frequently. In this case, the user can release the locked state of the welding gun 13. The user can first pull the pull plate 5 to drive the insertion rod 52 to move upward. At this time, the user can pull the pull rod 63 to drive the disc 6 to move. At this time, the limit column 64 will leave the limit groove 33, and the welding gun 13 will be unlocked. The user can pull the disc 6 until it moves to one side of the insertion rod 52. The user can release the pull plate 5, and the third spring 51 will reset and drive the pull plate 5 and the insertion rod 52 to move downward. At this time, when the pull rod 63 is released again, the insertion rod 52 will limit the reset of the disc 6. The first rotating shaft 14 is rotatably mounted on the inner wall of the first circular groove 32, and the second rotating shaft 15 is rotatably mounted on the inner wall of the third circular groove 36. A first telescopic rod 61 and a first spring 62 are fixedly mounted between the disc 6 and the first rotating shaft 14. The first telescopic rod 61 is located on the inner wall of the first spring 62. Two limiting columns 64 are fixedly mounted on the side end of the disc 6. The two limiting columns 64 are both slidably mounted on the inner wall of the limiting groove 33. A pull rod 63 is fixedly mounted on the other side end of the disc 6. In the actual welding of the workpiece, the user can adjust the angle of the welding gun 13 according to the shape of the workpiece and the welding requirements. When adjusting the angle of the welding gun 13, the user can pull the pull rod 63, and the movement of the pull rod 63 drives the disc 6 to move. At this time, the first telescopic rod 61 and the first The springs 62 are all stretched, and the limiting posts 64 on the disc 6 will be driven to leave the inner side wall of the limiting groove 33. The user can rotate the disc 6. The rotation of the disc 6 drives the first rotating shaft 14 to rotate through the first spring 62 and the first telescopic rod 61. The rotation of the first rotating shaft 14 drives the welding gun 13 to rotate, thereby changing the angle of the welding gun 13. The user can adjust the angle of the welding gun 13 to a suitable position according to the welding requirements to adapt it to the angle requirements of the welding workpiece. After completing the angle adjustment of the welding gun 13, the user can release the pull rod 63, and the first spring 62 will rebound to drive the disc 6 to move and reset. The limiting posts 64 on the disc 6 will be inserted into the inner side wall of the limiting groove 33 again, thereby locking the angle of the welding gun 13 to ensure the stability of the angle of the welding gun 13 during welding. The side end array of the gear 7 is fixedly installed with three arc blocks 71, and the side ends of the three arc blocks 71 are fixedly installed with a rotating ring 72, which is rotatably installed on the inner wall of the second circular groove 35. The upper end of the rack 8 is fixedly installed with a sliding rod 81, and the side end of the rack 8 is penetrated by a threaded groove 82. The inner wall of the two cylindrical grooves 38 is rotatably installed with the same threaded rod 83, and the threaded rod 83 is threadedly rotatably installed on the inner wall of the threaded groove 82. The rack 8 and the gear 7 are meshed, and each damping pad 9 is between the second circular groove 35. A second spring 91 and a second telescopic rod 92 are fixedly installed. Each second telescopic rod 92 is located on the inner side wall of each second spring 91. When it is necessary to ensure the stability of the welding gun 13 during welding, the clamping force of each damping pad 9 on the second rotating shaft 15 can be adjusted. The threaded rod 83 can be rotated. The threaded rod 83 rotates through the thread groove 82 to drive the slide bar 81 to slide in the rectangular slide groove 37. The movement of the slide bar 81 drives the rack 8 to move. The movement of the rack 8 drives the gear 7 to rotate. The rotation of the gear 7 drives each arc block 71 to rotate, as shown in the attached figure. Figure 9 As shown, when each arc block 71 rotates counterclockwise, it drives each damping pad 9 to move closer to each other, thereby increasing the clamping force applied to the second rotating shaft 15, while when the arc block 71 rotates clockwise, it reduces the clamping force on the second rotating shaft 15, thereby changing the limiting effect on the welding gun 13.

[0018] Working principle: The first step is to start the arc welding console 1 when welding a metal workpiece. The user can adjust the output parameters of the welding power supply, such as welding current and voltage, according to factors such as the material and thickness of the welding workpiece. At the same time, the user can select a suitable welding rod or welding wire and install it on the welding gun 13. The user can clamp the ground clamp 11 on the metal welding workpiece, and the user can hold the handheld handle 2 so that the welding gun 13 is aimed at the part to be welded. Then, by triggering the switch, the welding power supply is triggered to output high voltage and high current, and an arc is formed between the welding rod or welding wire and the workpiece. The high temperature causes the end of the welding rod or welding wire and the surface of the weld to melt rapidly, forming a molten pool. After the arc is successfully struck, the arc is kept burning stably. At the same time, the welding gun 13 on the handheld handle 2 is moved according to a certain welding speed and welding path, so that the welding rod or welding wire is continuously melted and filled into the molten pool. As the welding gun 13 moves, the molten pool gradually cools and solidifies to form a weld. After the weld cools, the welding of the workpiece is completed. During the welding process, the moving path of the welding gun 13 should be adjusted in real time according to the shape and size of the weld, and the angle of the welding gun 13 should be adjusted according to the shape of the workpiece.

[0019] In the second step, during the actual welding of the workpiece, the user can adjust the angle of the welding gun 13 according to the shape of the workpiece and the welding requirements. When adjusting the angle of the welding gun 13, the user can pull the pull rod 63. The movement of the pull rod 63 drives the disc 6 to move. At this time, the first telescopic rod 61 and the first spring 62 are both stretched, and the limiting column 64 on the disc 6 will be driven away from the inner side wall of the limiting groove 33. The user can rotate the disc 6. The rotation of the disc 6 drives the first rotating shaft 14 to rotate through the first spring 62 and the first telescopic rod 61. The rotation of the first rotating shaft 14 drives the welding gun 13 to rotate, thereby changing the angle of the welding gun 13. The user can adjust the angle of the welding gun 13 to a suitable position according to the welding requirements to adapt it to the angle requirements of the welding workpiece. After completing the angle adjustment of the welding gun 13, the user can release the pull rod 63, and the first spring 62 will rebound and drive the disc 6 to move and reset. The limiting post 64 on the disc 6 will be inserted into the inner side wall of the limiting groove 33 again, thereby locking the angle of the welding gun 13 and ensuring the stability of the angle of the welding gun 13 during welding. The device is provided with a welding gun 13 with adjustable angle. When welding, there are some restricted spaces. The workers need to adjust the angle or the gun holding posture. The welding process also requires the workers to manipulate the welding gun 13 to change its position, which makes welding difficult and easily fatigues the workers. However, with the non-adjustable welding gun 13, the angle of the welding gun 13 can be changed according to the shape of the workpiece, the space and the welding requirements. The workers do not need to adjust the gun holding position and posture, which reduces the fatigue of the operator and ensures the quality and stability of the welding. The fine adjustment of the angle can avoid physical interference and ensure the accessibility of welding. The device is provided with a welding gun 13 whose angle can be adjusted according to the shape of the welding workpiece, thereby forming different welding methods such as flat welding, vertical welding, push welding and pull welding during welding. By adjusting the angle of the welding gun 13, the fluidity of the molten pool can be improved, defects such as undercut and lack of fusion can be reduced, the consistency of the weld geometry can be improved, and it can adapt to different welding materials and welding conditions, ensure welding quality, and reduce the difficulty of operating different welding methods. In the third step, for some special-shaped workpieces that are difficult to weld, the user may need to frequently adjust the angle of the welding gun 13. At this time, the user can release the locked state of the welding gun 13. The user can first pull the pull plate 5 to drive the insertion rod 52 to move upward. At this time, the user can pull the pull rod 63 to drive the disc 6 to move. At this time, the limit column 64 will leave the limit groove 33, and the welding gun 13 will be unlocked. The user can pull the disc 6 until it moves to the side of the insertion rod 52. The user can release the pull plate 5, and the third spring 51 will reset to drive the pull plate 5 and the insertion rod 52 to move downward. At this time, When the pull rod 63 is released, the insert rod 52 will limit the reset of the disc 6, that is, at this moment the limit column 64 can no longer return to the inner wall of the limit groove 33, that is, the welding gun 13 is no longer locked. When it is necessary to ensure the stability of the welding gun 13 during welding, the clamping force of each damping pad 9 on the second rotating shaft 15 can be adjusted. In fact, the threaded rod 83 can be rotated. The threaded rod 83 rotates through the threaded groove 82 to drive the slide bar 81 to slide in the rectangular slide groove 37. The movement of the slide bar 81 drives the rack 8 to move. The movement of the rack 8 drives the gear 7 to rotate. The rotation of the gear 7 drives each arc block 71 to rotate, as shown in the attached figure. Figure 9 As shown, when each arc block 71 rotates counterclockwise, it drives each damping pad 9 to move closer to each other, thereby increasing the clamping force applied to the second rotating shaft 15. When the arc block 71 rotates clockwise, it reduces the clamping force on the second rotating shaft 15, thereby changing the limiting effect on the welding gun 13. The device is provided with a dynamically adjustable welding gun 13. During actual welding, the process of adjusting the welding gun 13 can be simplified. The welding gun 13 can dynamically change with the curvature of the workpiece during welding, ensuring that the arc always contacts the surface vertically or at the optimal angle, thereby ensuring the welding effect. There is no need to manually adjust the angle of the welding gun 13 or adjust the gun holding posture, which reduces the dependence on the operator's experience and fatigue errors. The dynamic adjustment can accurately control the amount of weld deposition and reduce welding material waste. The present device cooperates with a damping pad 9 and an arc block 71 with adjustable clamping force. When the welding gun 13 is in the unlocked state, the clamping effect of the arc block 71 on the damping pad 9 can be adjusted to change the clamping effect of the damping pad 9 on the welding gun 13. The clamping force of the damping pad 9 on the welding gun 13 can be changed by rotating the threaded rod 83 according to the needs of dynamic adjustment and stability during welding. The welding gun 13 can switch between different resistance modes during use. In the low damping mode, the position of the welding gun 13 can be quickly adjusted (coarse positioning stage), reducing operational resistance and improving efficiency. In the high damping mode, the trajectory of the molten pool can be finely controlled (such as when welding curved surfaces), suppressing hand shaking, avoiding arc deviation or loss of control of the molten pool, and facilitating use. This device is provided with two modes of positioning limit and unlocking limit for the welding gun 13. When the welding gun 13 needs to be stably welded, the positioning limit mode can be selected. When the welding gun 13 needs to be dynamically adjusted, the unlocking limit mode can be selected to use the welding gun 13 for welding. It can adapt to a variety of welding conditions and welding requirements, thereby improving the adaptability of the equipment during welding.

[0020] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A welding head angle adjustment device for chemical machinery, comprising an arc welding console (1), a ground wire clamp (11), an electric wire (12) and a welding gun (13), wherein the ground wire clamp (11) and the electric wire (12) are fixedly mounted on the side end of the arc welding console (1), and the welding gun (13) is fixedly mounted on the lower end of the electric wire (12), characterized in that: An adjusting mechanism for adjusting the angle of the welding gun (13) is provided on the electric wire (12), and a locking mechanism for locking the adjusting mechanism is provided on the electric wire (12); The adjusting mechanism comprises a hand-held handle (2), a C-shaped mounting member (3), a gear (7), a rack (8) and a damping pad (9); the locking mechanism comprises an ear plate (4), a pull plate (5) and a disc (6); the hand-held handle (2) is fixedly mounted on the circumferential end of the electric wire (12); the upper end of the C-shaped mounting member (3) is penetrated by a mounting circular groove (31); the electric wire (12) penetrates the inner side wall of the mounting circular groove (31); the two side ends of the C-shaped mounting member (3) are penetrated by a first circular groove (32) and a third circular groove (36); the C-shaped mounting member ( 3) is provided with a buckle plate (39) at the side end portion, the ear plate (4) is fixedly mounted on the side end portion of the C-shaped mounting member (3), the pull plate (5) is located at the upper end portion of the ear plate (4), the disc (6) is located at the side end portion of the first circular groove (32), one side end portion of the C-shaped mounting member (3) is provided with an embedded groove (34) and a second circular groove (35), the gear (7) is located on the inner side wall of the embedded groove (34), the rack (8) is slidably located on the inner side wall of the embedded groove (34), the number of the damping pads (9) is three, and the array of the damping pads (9) is located on the inner side wall of the second circular groove (35).

2. A welding head angle adjustment device for chemical machinery according to claim 1, characterized in that: A first rotating shaft (14) is fixedly mounted on one end of the electric wire (12), a second rotating shaft (15) is fixedly mounted on the other end of the electric wire (12), an L-shaped fixing rod (21) is fixedly mounted on both end portions of the handheld handle (2), and the C-shaped mounting member (3) is fixedly mounted on the lower end portion of the L-shaped fixing rod (21).

3. A welding head angle adjustment device for chemical machinery as claimed in claim 2, characterized in that: The side end array of the C-shaped mounting member (3) is provided with at least two limiting grooves (33), the upper end of the inner side wall of the embedded groove (34) is provided with a rectangular sliding groove (37), and both side ends of the inner side wall of the rectangular sliding groove (37) are penetrated by cylindrical grooves (38).

4. A welding head angle adjustment device for chemical machinery as claimed in claim 3, characterized in that: A movable groove (41) is provided through the upper end of the ear plate (4), and an inserting rod (52) is fixedly mounted on the lower end of the pull plate (5).

5. A welding head angle adjustment device for chemical machinery as claimed in claim 4, characterized in that: The insertion rod (52) is slidably mounted on the inner side wall of the movable groove (41), and two third springs (51) are fixedly mounted between the pull plate (5) and the ear plate (4).

6. A welding head angle adjustment device for chemical machinery as claimed in claim 5, characterized in that: The first rotating shaft (14) is rotatably mounted on the inner side wall of the first circular groove (32), and the second rotating shaft (15) is rotatably mounted on the inner side wall of the third circular groove (36). A first telescopic rod (61) and a first spring (62) are fixedly mounted between the disc (6) and the first rotating shaft (14), and the first telescopic rod (61) is located on the inner side wall of the first spring (62).

7. A welding head angle adjustment device for chemical machinery as claimed in claim 6, characterized in that: Two limiting columns (64) are fixedly mounted on the side end of the disc (6), and both limiting columns (64) are slidably mounted on the inner side wall of the limiting groove (33). A pull rod (63) is fixedly mounted on the other side end of the disc (6).

8. A welding head angle adjustment device for chemical machinery as claimed in claim 7, characterized in that: Three arc blocks (71) are fixedly mounted in an array on the side ends of the gear (7), and rotating rings (72) are fixedly mounted on the side ends of the three arc blocks (71). The rotating rings (72) are rotatably mounted on the inner side wall of the second circular groove (35).

9. A welding head angle adjustment device for chemical machinery as claimed in claim 8, characterized in that: A sliding rod (81) is fixedly mounted on the upper end of the rack (8), a threaded groove (82) is penetrated through the side end of the rack (8), and the inner side walls of the two cylindrical grooves (38) are rotatably mounted with the same threaded rod (83); The threaded rod (83) is threadably mounted on the inner side wall of the threaded groove (82), and the rack (8) and the gear (7) are meshed.

10. A welding head angle adjustment device for chemical machinery according to claim 9, characterized in that: A second spring (91) and a second telescopic rod (92) are fixedly installed between each damping pad (9) and the second circular groove (35), and each second telescopic rod (92) is located on the inner side wall of each second spring (91).

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