A steel pipe welding auxiliary device for steel furniture production

Abstract

This invention relates to the field of welding technology and proposes an auxiliary device for welding steel pipes in steel furniture production. The device includes an adjustment mechanism, a control mechanism fixedly installed on the inner left side of the adjustment mechanism, and a fixing mechanism fixedly installed on the inner upper end of the adjustment mechanism. The adjustment mechanism includes a base, a transmission rod, and a reduction motor. Installation chambers are fixedly connected to both sides of the upper end of the base. Lifting chambers are slidably connected inside each installation chamber. A threaded rod is threadedly connected to the lower end of each lifting chamber, and a bevel gear is fixedly connected to the lower end of each threaded rod. Through the cooperation of the adjustment mechanism and the control mechanism, the adjustment mechanism for different welding surfaces at the weld joint is optimized. This effectively controls the height variation at the joint, preventing significant rises and falls, ensuring the stability and quality of the welding process, reducing the worker's workload, and improving comfort and convenience during operation.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to an auxiliary device for welding steel pipes used in the production of steel furniture. Background Technology

[0002] In the production of steel furniture, the welding quality of the steel pipe outer frame directly affects the structural stability and service life of the furniture. Therefore, various welding auxiliary devices are needed to ensure welding accuracy and work efficiency. Currently, commonly used welding auxiliary devices in the industry mainly include welding positioners, steel pipe positioning fixtures, welding workbenches, and height-adjustable supports. Among them, welding positioners can realize the angle rotation and position adjustment of the steel pipe frame, making it easier for workers to work on different welding surfaces, and have become the core auxiliary equipment in the welding of the steel pipe outer frame of furniture. This type of device usually fixes the steel pipe frame through a clamping mechanism, and then drives the frame to rotate or move through a transmission system, so that the welding surface at the joint is in a position that is easy to operate, which reduces the difficulty of welding operations to a certain extent.

[0003] However, existing welding positioners still have significant drawbacks when applied to welding the outer frame of steel pipes for furniture: their adjustment mechanism lacks precise coordination control with the height of the welding surface, and noticeable height fluctuations easily occur at the joints when switching between different welding surfaces or adapting to steel pipe frames of different sizes. This forces workers to frequently squat, bend over, or raise the welding torch to adapt to height changes during the welding process, making it difficult to maintain a stable welding posture and easily causing inaccurate control of the distance between the welding torch and the joint, leading to quality problems such as uneven welds and incomplete welds. At the same time, frequent adjustments to the operating posture significantly increase the labor intensity of workers, reduce work comfort, limit welding efficiency, and long-term repeated posture changes may also increase operational safety hazards, failing to meet the comprehensive requirements of welding quality, work efficiency, and ease of operation in steel furniture production. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a steel pipe welding auxiliary device for steel furniture production, so as to solve the problems mentioned in the background art.

[0005] To solve the above problems, the present invention adopts the following technical solution: a steel pipe welding auxiliary device for steel furniture production, comprising an adjustment mechanism, a control mechanism fixedly installed on the inner left side of the adjustment mechanism, and a fixing mechanism fixedly installed on the inner upper end of the adjustment mechanism. The adjustment mechanism includes a base, a transmission rod, and a reduction motor. Installation chambers are fixedly connected to both sides of the upper end of the base. Lifting chambers are slidably connected inside each installation chamber. A threaded rod is threadedly connected to the lower end of each lifting chamber. A bevel gear is fixedly connected to the lower end of each threaded rod. Each bevel gear meshes with a bevel gear. The middle of each bevel gear is fixedly connected to both ends of the transmission rod. A rotating chamber is fixedly connected to the upper end of each lifting chamber. A rotating rod is rotatably connected to the middle of each rotating chamber. A half gear is fixedly connected to the middle of the rotating rod on the left side. The half gear meshes with a full gear. A pulley is fixedly connected to the right side of the full gear. The pulley is connected to a pulley and a double-groove pulley via a transmission belt. The middle of the double-groove pulley is fixedly connected to the left drive end of the reduction motor.

[0006] Preferably, the lower end of the geared motor is fixedly connected to the upper left rear part of the base, both ends of the transmission rod are rotatably connected to the middle of the lower two sides of the base, and the middle part of the full gear is rotatably connected to the middle of the lower end of the left lifting chamber.

[0007] Preferably, the control mechanism includes a mounting frame, a transmission component is fixedly mounted on the lower end of the mounting frame, and an adjustment component is provided on the upper end of the mounting frame. The adjustment component includes a threaded rod II, a drive block is threadedly connected to the outer circumference of the threaded rod II, a drive shaft is fixedly connected to the right end of the drive block, the right end of the drive shaft is fixedly connected to the middle of the pulley II, and a pulley V is fixedly connected to the rear end of the threaded rod II. The pulley V is connected to a pulley IV via a transmission belt III.

[0008] Preferably, the lower end of the drive block is slidably connected to the upper end of the mounting bracket, and the middle part of the drive shaft is slidably connected to the middle opening at the right end of the left side of the mounting compartment.

[0009] Preferably, the transmission assembly includes a micro motor, a speed increaser, a sliding rod, and two continuously variable speed (CVT) wheels. A threaded rod three is fixedly connected to the rear drive end of the micro motor. A drive seat is threadedly connected to the outer circumference of the threaded rod three. A transmission wheel is disposed in the lower inner part of the drive seat. The middle part of the transmission wheel is slidably connected to the outer circumference of the sliding rod. The front end of the left CVT wheel is fixedly connected to the rear input end of the speed increaser. A bevel gear five is fixedly connected to the front output end of the speed increaser. A bevel gear six meshes with the bevel gear five. The middle part of the bevel gear six is ​​fixedly connected to the lower middle part of the left threaded rod one. A bevel gear three is fixedly connected to the rear end of the right CVT wheel. A bevel gear four meshes with the bevel gear three. A drive rod is fixedly connected to the middle of the bevel gear four. A pulley three is fixedly connected to the right end of the drive rod. The pulley three is connected to a double-groove pulley via a transmission belt two.

[0010] Preferably, the front and rear ends of the continuously variable speed wheel are rotatably connected to the four corner openings at the lower end of the mounting frame, the front and rear ends of the sliding rod are fixedly connected to the middle of the lower end of the front and rear sides of the mounting frame, and both sides of the transmission wheel are in contact with the continuously variable speed wheels on both sides.

[0011] Preferably, the middle part of the fourth pulley is fixedly connected to the rear end of the continuously variable speed wheel on the right side, and the middle part of the drive rod is rotatably connected to the lower opening at the right rear end of the left mounting compartment.

[0012] Preferably, the fixing mechanism includes a mounting base, a motor, and a bevel gear seven. A rotating seat is rotatably connected to the upper middle part of the mounting base. A rotating disk is fixedly connected to the upper end of the rotating seat. Sliding chambers are evenly distributed at the lower end of the rotating disk. A threaded rod four is rotatably connected inside each sliding chamber. A sliding block is threadedly connected to the outer circumference of each threaded rod four. A fixed seat is fixedly connected to the upper end of each sliding block. A bevel gear eight is fixedly connected to the end of each threaded rod four near the motor. Each bevel gear eight meshes with a bevel gear seven. The middle part of the bevel gear seven is fixedly connected to the upper drive end of the motor.

[0013] Preferably, the outer periphery of the sliding block is slidably connected to the inside of the sliding chamber, and the outer periphery of the fixed seat is slidably connected to the upper opening of the rotating disk.

[0014] Preferably, the ends of the rotating rods near the motor are fixedly connected to the middle of both sides of the mounting base, and the upper end of the motor is fixedly connected to the middle of the lower end of the rotating base.

[0015] The steel pipe welding auxiliary device for steel furniture production provided by this invention has the following advantages:

[0016] 1. By coordinating the adjustment and control mechanisms, the adjustment mechanism for different welding surfaces at the weld joint is optimized, effectively controlling the height variation at the joint and preventing significant rises and falls. As a result, workers do not need to frequently squat or raise the welding torch due to large fluctuations in the height of the joint during welding operations. The welding posture can remain stable and consistent. On the one hand, this effectively avoids the problem of difficulty in accurately controlling the distance between the welding torch and the joint caused by frequent adjustments to the welding posture, ensuring the stability of the welding process and the welding quality. On the other hand, it significantly reduces the operational intensity of workers, improves the comfort and convenience of the operation, and thus improves the overall efficiency and safety of the welding operation.

[0017] 2. During the adjustment of the fixed mechanism, the continuously variable speed wheel on the right side drives the pulley five to rotate through the pulley four and the transmission belt three. This allows the threaded rod two to synchronously drive the position of the drive block during the height adjustment of the fixed mechanism. As the pulley one rises with the lifting chamber, the pulley two can always keep the transmission belt one taut, achieving stable transmission.

[0018] 3. By synchronously starting the micro motor during the initial adjustment of the fixed seat position, the drive seat moves synchronously via the threaded rod, thereby adjusting the position of the transmission wheel on the sliding rod and changing the transmission ratio. This results in a smaller rise as the size of the furniture steel tube outer frame increases, achieving a precise match between the size of the furniture steel tube outer frame and the rise. This effectively avoids problems such as misalignment of joints and height differences caused by excessive rise in large-sized frames, ensuring the flatness of welded joints and the stability of welding quality. It eliminates the need for separate equipment adjustments or component replacements for different frame sizes, significantly improving equipment versatility and production line flexibility, reducing debugging costs and changeover time. It also reduces repeated calibration operations caused by height fluctuations, improving operational continuity and production efficiency, lowering the operational threshold and reducing human error, and effectively solving the height matching problem when welding furniture steel tube outer frames of different sizes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A front-view perspective three-dimensional schematic diagram of a steel pipe welding auxiliary device for steel furniture production provided in this application;

[0021] Figure 2A second front-view perspective view of a steel pipe welding auxiliary device for steel furniture production provided for this application;

[0022] Figure 3 A front perspective perspective view of the fixing mechanism of a steel pipe welding auxiliary device for steel furniture production provided in this application;

[0023] Figure 4 A front sectional perspective view of the fixing mechanism of a steel pipe welding auxiliary device for steel furniture production provided in this application;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 A side sectional perspective view of a steel pipe welding auxiliary device for steel furniture production provided in this application;

[0026] Figure 7 A partial three-dimensional schematic diagram of the adjustment mechanism and control mechanism of a steel pipe welding auxiliary device for steel furniture production provided in this application;

[0027] Figure 8 A partially exploded three-dimensional schematic diagram of the adjustment mechanism and control mechanism of an auxiliary device for welding steel pipes in steel furniture production, provided in this application;

[0028] Figure 9 Partial exploded three-dimensional schematic diagram of the adjustment mechanism and control mechanism of the steel pipe welding auxiliary device for steel furniture production provided in this application;

[0029] Figure 10 for Figure 9 Enlarged view of section B in the middle.

[0030] In the diagram: 1. Adjustment mechanism; 11. Installation chamber; 12. Lifting chamber; 13. Threaded rod one; 14. Bevel gear one; 15. Bevel gear two; 16. Transmission rod; 17. Rotating chamber; 18. Rotating rod; 19. Half gear; 110. Full gear; 111. Belt pulley one; 112. Transmission belt one; 113. Belt pulley two; 114. Double groove belt pulley; 115. Gear motor; 116. Base; 2. Control mechanism; 21. Mounting bracket; 22. Threaded rod two; 23. Drive block; 24. Drive shaft; 25. Stepless speed regulating wheel; 26. Micro motor; 27. Threaded rod three; 2 8. Sliding rod; 29. ​​Transmission wheel; 210. Drive seat; 211. Bevel gear three; 212. Bevel gear four; 213. Drive rod; 214. Belt pulley three; 215. Transmission belt two; 216. Belt pulley four; 217. Transmission belt three; 218. Belt pulley five; 219. Speed ​​increaser; 220. Bevel gear five; 221. Bevel gear six; 3. Fixing mechanism; 31. Mounting seat; 32. Rotating seat; 33. Rotating disk; 34. Sliding chamber; 35. Threaded rod four; 36. Sliding block; 37. Fixed seat; 38. Motor; 39. Bevel gear seven; 310. Bevel gear eight. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0032] like Figures 1-10 As shown, this embodiment proposes a steel pipe welding auxiliary device for steel furniture production, including an adjustment mechanism 1. A control mechanism 2 is fixedly installed on the inner left side of the adjustment mechanism 1, and a fixing mechanism 3 is fixedly installed on the inner upper end of the adjustment mechanism 1. The adjustment mechanism 1 includes a base 116, a transmission rod 16, and a reduction motor 115. Installation chambers 11 are fixedly connected to both sides of the upper end of the base 116. Lifting chambers 12 are slidably connected inside the installation chambers 11. Threaded rods 13 are threadedly connected to the lower ends of the lifting chambers 12. Bevel gears 14 are fixedly connected to the lower ends of the threaded rods 13. The bevel gears 14 are meshed and connected... A second bevel gear 15 is connected to the upper end of the lifting chamber 12. The middle part of the second bevel gear 15 is fixedly connected to both ends of the transmission rod 16. A rotating chamber 17 is fixedly connected to the upper end of the lifting chamber 12. A rotating rod 18 is rotatably connected to the middle part of the rotating chamber 17. A half gear 19 is fixedly connected to the middle part of the left rotating rod 18. The half gear 19 is meshed with a full gear 110. A pulley 111 is fixedly connected to the right side of the full gear 110. The pulley 111 is connected to a second pulley 113 and a double groove pulley 114 through a transmission belt 112. The middle part of the double groove pulley 114 is fixedly connected to the left drive end of the reduction motor 115.

[0033] In this embodiment, the lower end of the geared motor 115 is fixedly connected to the upper left rear part of the base 116, both ends of the transmission rod 16 are rotatably connected to the middle of the lower sides of the base 116, and the middle part of the full gear 110 is rotatably connected to the middle of the lower end of the left lifting chamber 12.

[0034] In this embodiment, the transmission assembly includes a micro motor 26, a speed increaser 219, a sliding rod 28, and two continuously variable speed wheels 25. A threaded rod 27 is fixedly connected to the rear drive end of the micro motor 26. A drive seat 210 is threadedly connected to the outer periphery of the threaded rod 27. A transmission wheel 29 is disposed in the lower inner part of the drive seat 210. The middle part of the transmission wheel 29 is slidably connected to the outer periphery of the sliding rod 28. The front end of the left continuously variable speed wheel 25 is fixedly connected to the rear input end of the speed increaser 219, and the front output end of the speed increaser 219 is fixedly connected to... There is a bevel gear 5 220, which meshes with a bevel gear 6 221. The middle part of the bevel gear 6 221 is fixedly connected to the lower middle part of the left threaded rod 13. The rear end of the right continuously variable speed wheel 25 is fixedly connected with a bevel gear 3 211, which meshes with a bevel gear 4 212. The middle part of the bevel gear 4 212 is fixedly connected with a drive rod 213. The right end of the drive rod 213 is fixedly connected with a pulley 3 214. The pulley 3 214 is connected to the double groove pulley 114 through a transmission belt 215.

[0035] In this embodiment, the front and rear ends of the continuously variable speed wheel 25 are rotatably connected to the four corner openings at the lower end of the mounting bracket 21, the front and rear ends of the sliding rod 28 are fixedly connected to the middle of the lower end of the front and rear sides of the mounting bracket 21, and both sides of the transmission wheel 29 are in contact with the continuously variable speed wheels 25 on both sides.

[0036] In this embodiment, the middle part of the pulley 216 is fixedly connected to the rear end of the right continuously variable speed wheel 25, and the middle part of the drive rod 213 is rotatably connected to the lower opening at the right rear end of the left mounting compartment 11.

[0037] Specifically, during the welding process, the geared motor 115 is started, which drives the pulley 111 to rotate through the cooperation of the double-grooved pulley 114, pulley 113, and transmission belt 112. This, in turn, drives the left rotating rod 18 to rotate through the cooperation of the full gear 110 and the half gear 19. This, in turn, cooperates with the right rotating rod 18, causing the fixing mechanism 3 to rotate. This ensures continuous welding of different surfaces at the joint. When the fixing mechanism 3 rotates, the double-grooved pulley 114 simultaneously drives the drive rod 213 to rotate through the transmission belt 215 and pulley 214. This, in turn, drives the right continuously variable transmission through the bevel gear 212 and bevel gear 211. The speed regulating wheel 25 rotates, which in turn drives the continuously variable speed regulating wheel 25 on the left to rotate via the transmission wheel 29. This, in turn, drives the bevel gear 220 via the speed increaser 219, and finally drives the threaded rod 13 via the bevel gear 221. This causes the fixing mechanism 3 to continuously rise as the front end of the furniture steel tube outer frame tilts downwards. Through the coordination of the adjusting mechanism 1 and the control mechanism 2, the adjustment mechanism for different welding surfaces at the weld joint is optimized, effectively controlling the height variation at the joint and preventing significant rises and falls. Therefore, during welding operations, workers do not need to frequently squat or raise the welding torch due to large fluctuations in the joint height. The welding posture can remain stable and consistent, effectively avoiding the problem of inaccurate control of the distance between the welding torch and the joint caused by frequent adjustments to the welding posture, thus ensuring the stability of the welding process and the welding quality. On the other hand, it significantly reduces the operator's workload, improves the comfort and convenience of the operation, and thus improves the overall efficiency and safety of the welding operation. At the same time, when adjusting the position of the fixed seat 37, the micro motor 26 is started synchronously, which drives the drive seat 210 to move synchronously through the threaded rod 27, thereby adjusting the position of the transmission wheel 29 on the sliding rod 28, thereby changing the transmission ratio. This allows for adjustments to the size of the outer frame of the furniture steel tube. The smaller the rise, the more precise the fit between the size of the furniture steel tube outer frame and the rise, effectively avoiding problems such as misalignment of joints and height differences caused by excessive rise in large-sized frames. This ensures the flatness of the welded joints and the stability of the welding quality. There is no need to adjust the equipment or replace components separately for different frame sizes, which significantly improves the equipment's versatility and the production line's flexibility, reduces debugging costs and changeover time, and reduces repeated calibration operations caused by height fluctuations. This improves the continuity of operations and production efficiency, lowers the operating threshold and reduces human error, and effectively solves the height matching problem when welding furniture steel tube outer frames of different sizes.

[0038] In this embodiment, the control mechanism 2 includes a mounting frame 21. A transmission component is fixedly mounted on the lower end of the mounting frame 21, and an adjustment component is provided on the upper end of the mounting frame 21. The adjustment component includes a threaded rod 22. A drive block 23 is threadedly connected to the outer circumference of the threaded rod 22. A drive shaft 24 is fixedly connected to the right end of the drive block 23. The right end of the drive shaft 24 is fixedly connected to the middle of the pulley 113. A pulley 218 is fixedly connected to the rear end of the threaded rod 22. The pulley 218 is connected to a pulley 216 via a transmission belt 217.

[0039] In this embodiment, the lower end of the drive block 23 is slidably connected to the upper end of the mounting bracket 21, and the middle part of the drive shaft 24 is slidably connected to the middle opening at the right end of the left mounting compartment 11.

[0040] Specifically, during the adjustment of the fixed mechanism 3, the continuously variable speed wheel 25 on the right side drives the pulley 218 to rotate through the pulley 216 and the transmission belt 217. This allows the threaded rod 22 to synchronously drive the position of the drive block 23 during the height adjustment of the fixed mechanism 3. As a result, the pulley 111 rises with the lifting chamber 12, and the pulley 213 can always keep the transmission belt 112 taut, achieving stable transmission.

[0041] In this embodiment, the fixing mechanism 3 includes a mounting base 31, a motor 38, and a bevel gear 39. A rotating base 32 is rotatably connected to the upper middle part of the mounting base 31. A rotating disk 33 is fixedly connected to the upper end of the rotating base 32. Sliding chambers 34 are evenly distributed at the lower end of the rotating disk 33. Threaded rods 35 are rotatably connected inside each sliding chamber 34. Sliding blocks 36 are threadedly connected to the outer periphery of each threaded rod 35. A fixing base 37 is fixedly connected to the upper end of each sliding block 36. A bevel gear 310 is fixedly connected to the end of each threaded rod 35 near the motor 38. The bevel gear 310 meshes with the bevel gear 39. The middle part of the bevel gear 39 is fixedly connected to the upper drive end of the motor 38.

[0042] In this embodiment, the outer periphery of the sliding block 36 is slidably connected to the inside of the sliding chamber 34, and the outer periphery of the fixed seat 37 is slidably connected to the upper opening of the rotating disk 33.

[0043] In this embodiment, the ends of the rotating rod 18 near the motor 38 are fixedly connected to the middle of both sides of the mounting base 31, and the upper end of the motor 38 is fixedly connected to the middle of the lower end of the rotating base 32.

[0044] Specifically, when welding the outer frame of the furniture steel pipe is required, the motor 38 and the micro motor 26 are started simultaneously according to the size of the outer frame of the furniture steel pipe to be welded. The motor 38 drives all the bevel gears 310 to rotate through the bevel gear 7 39, thereby driving the sliding block 36 to slide in the sliding chamber 34 through the rotation of the threaded rod 4 35. After moving the fixed seat 37 to a suitable position, the clamp is installed in the corresponding threaded hole at the upper end of the fixed seat 37 to fix the multiple sections of the furniture steel pipe outer frame. The rotating disk 33 is manually rotated to move one of the welding points to the front end of the mounting base 31. The worker stands at the joint of the fixing mechanism 3 with a welding gun in hand to perform welding.

[0045] It should be noted that manually adjusting the joint of the furniture steel tube outer frame to face forward is only for some smaller furniture steel tube outer frames. This type of welding auxiliary positioner is small in size, and the rotating disk 33 is easy to rotate. For larger furniture steel tube outer frames, a large welding auxiliary positioner body is used. The thickness of the rotating disk 33 is generally more than three centimeters. It has a toothed ring on the outer circumference of the lower end of the rotating seat 32, and a set of motors and gears are added in the mounting base 31. It can electrically drive the rotating disk 33 and the furniture steel tube outer frame at the upper end to rotate and adjust the position of the joint. In addition, the front end of the mounting base 31 is also equipped with a carbon brush for connecting electricity, and the outside of the mounting compartment 11 on one side is equipped with an electrical control box, controller, and automatic limit power-off structure. Since this is a conventional structure of welding auxiliary positioners and is existing technology, its working process and principle will not be described in detail here.

[0046] Working principle: First, when welding the outer frame of the furniture steel pipe is required, the motor 38 and the micro motor 26 are started simultaneously according to the size of the outer frame to be welded. The motor 38 drives all the bevel gears 310 to rotate through the bevel gear 7 39, which in turn drives the sliding block 36 to slide in the sliding chamber 34 through the threaded rod 4 35. After moving the fixed seat 37 to the appropriate position, the clamp is installed in the corresponding threaded hole on the upper end of the fixed seat 37 to fix the multi-section furniture steel pipe outer frame. The rotating disk 33 is manually rotated to move one of the welding points to the front end of the mounting base 31. The worker stands at the joint of the fixing mechanism 3 with a welding gun to weld. During the welding process, the reduction motor 115 is started, which drives the double-groove belt to rotate the outer frame. The engagement of pulley 114, pulley 113, and transmission belt 112 drives pulley 111 to rotate. This, in turn, through the engagement of full gear 110 and half gear 19, drives the left rotating rod 18 to rotate. This, in conjunction with the right rotating rod 18, causes the fixing mechanism 3 to rotate, ensuring continuous welding of different surfaces at the joint. When the fixing mechanism 3 rotates, the double-groove pulley 114 synchronously drives the drive rod 213 to rotate via transmission belt 215 and pulley 214. This, in turn, drives the right continuously variable speed wheel 25 to rotate via bevel gear 4 212 and bevel gear 3 211. This, in turn, drives the left continuously variable speed wheel 25 to rotate via transmission wheel 29. Finally, through speed increaser 219, it drives bevel gear 5 220 to rotate, ultimately... Gear 6 221 drives threaded rod 13 to rotate, causing the fixing mechanism 3 to tilt downwards along with the front end of the furniture steel tube outer frame. Simultaneously, the entire fixing mechanism 3 rises. Through the coordination of adjusting mechanism 1 and control mechanism 2, the adjustment mechanism for different welding surfaces at the weld joint is optimized, effectively controlling the height variation at the joint and preventing significant rises and falls. Therefore, during welding operations, workers do not need to frequently squat or raise the welding torch due to large fluctuations in the joint height. The welding posture remains stable and consistent. This effectively avoids the problem of inaccurate control of the distance between the welding torch and the joint caused by frequent adjustments to the welding posture, ensuring the stability and quality of the welding process. Furthermore, it significantly reduces the worker's workload and improves operational efficiency. The comfort and convenience during the process improve the overall efficiency and safety of the welding operation. During the adjustment of the fixed mechanism 3, the continuously variable speed wheel 25 on the right side drives the pulley 218 to rotate through the pulley 216 and the transmission belt 217. This allows the threaded rod 22 to synchronously drive the position of the drive block 23 during the height adjustment of the fixed mechanism 3. As the pulley 111 rises with the lifting chamber 12, the pulley 113 can always keep the transmission belt 112 taut, achieving stable transmission. At the initial stage of adjusting the position of the fixed seat 37, the micro motor 26 is started synchronously, which drives the drive seat 210 to move synchronously through the threaded rod 27, thereby adjusting the position of the transmission wheel 29 on the sliding rod 28.This allows for a change in the transmission ratio, resulting in a smaller rise as the size of the furniture steel tube outer frame increases. This achieves a precise match between the frame size and the rise, effectively preventing misalignment and height differences at joints caused by excessive rise in large frames. It ensures the flatness of welded joints and the stability of weld quality. No separate equipment adjustments or component replacements are needed for different frame sizes, significantly improving equipment versatility and production line flexibility. This reduces debugging costs and changeover time, while also minimizing repetitive calibration operations due to height fluctuations, improving operational continuity and production efficiency. It lowers the operational threshold and reduces human error, effectively solving the height matching problem when welding furniture steel tube outer frames of different sizes.

[0047] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A steel pipe welding auxiliary device for steel furniture production, comprising an adjustment mechanism (1), characterized in that, A control mechanism (2) is fixedly installed on the inner left side of the adjustment mechanism (1), and a fixing mechanism (3) is fixedly installed on the inner upper end of the adjustment mechanism (1). The adjustment mechanism (1) includes a base (116), a transmission rod (16), and a reduction motor (115). Installation chambers (11) are fixedly connected to both sides of the upper end of the base (116). Lifting chambers (12) are slidably connected inside the installation chambers (11). Threaded rods (13) are threadedly connected to the lower end of the lifting chambers (12). Bevel gears (14) are fixedly connected to the lower end of the threaded rods (13). Bevel gears (14) are meshed with bevel gears (15). The middle part of each of the lifting chambers (12) is fixedly connected to both ends of the transmission rod (16). The upper end of each lifting chamber (12) is fixedly connected to a rotating chamber (17). The middle part of each rotating chamber (17) is rotatably connected to a rotating rod (18). The middle part of the rotating rod (18) on the left side is fixedly connected to a half gear (19). The half gear (19) meshes with a full gear (110). The right side of the full gear (110) is fixedly connected to a pulley (111). The pulley (111) is connected to a pulley (113) and a double groove pulley (114) through a transmission belt (112). The middle part of the double groove pulley (114) is fixedly connected to the left drive end of the reduction motor (115). The control mechanism (2) includes a mounting frame (21). A transmission component is fixedly installed at the lower end of the mounting frame (21). An adjustment component is provided at the upper end of the mounting frame (21). The adjustment component includes a threaded rod (22). A drive block (23) is threadedly connected to the outer circumference of the threaded rod (22). A drive shaft (24) is fixedly connected to the right end of the drive block (23). The right end of the drive shaft (24) is fixedly connected to the middle of the pulley (113). A pulley (218) is fixedly connected to the rear end of the threaded rod (22). The pulley (218) is connected to a pulley (216) via a transmission belt (217). The lower end of the drive block (23) is slidably connected to the upper end of the mounting frame (21). The middle part of the drive shaft (24) is slidably connected to the opening at the middle right end of the mounting compartment (11) on the left side. The transmission assembly includes a micro motor (26), a speed increaser (219), a sliding rod (28), and two continuously variable speed wheels (25). A threaded rod (27) is fixedly connected to the rear drive end of the micro motor (26). A drive seat (210) is threadedly connected to the outer circumference of the threaded rod (27). A transmission wheel (29) is located in the lower inner part of the drive seat (210). The middle part of the transmission wheel (29) is slidably connected to the outer circumference of the sliding rod (28). The front end of the continuously variable speed wheel (25) on the left is fixedly connected to the rear input end of the speed increaser (219). A bevel gear (220) is fixedly connected to the front output end of the speed increaser (219). The bevel gear (220) meshes with a bevel gear (221). The middle part of the sixth bevel gear (221) is fixedly connected to the lower middle part of the threaded rod (13) on the left side. The rear end of the continuously variable speed wheel (25) on the right side is fixedly connected to the third bevel gear (211). The third bevel gear (211) is meshed with the fourth bevel gear (212). The middle part of the fourth bevel gear (212) is fixedly connected to the drive rod (213). The right end of the drive rod (213) is fixedly connected to the third pulley (214). The third pulley (214) is connected to the double groove pulley (114) through the second transmission belt (215). Both sides of the transmission wheel (29) are in contact with the continuously variable speed wheels (25) on both sides. The middle part of the fourth pulley (216) is fixedly connected to the rear end of the continuously variable speed wheel (25) on the right side.

2. The steel pipe welding auxiliary device for steel furniture production according to claim 1, characterized in that, The lower end of the geared motor (115) is fixedly connected to the upper left rear part of the base (116), both ends of the transmission rod (16) are rotatably connected to the middle of the lower sides of the base (116), and the middle part of the full gear (110) is rotatably connected to the middle of the lower end of the lifting chamber (12) on the left.

3. The auxiliary device for welding steel pipes in steel furniture production according to claim 2, characterized in that, The front and rear ends of the continuously variable speed wheel (25) are rotatably connected to the four corner openings at the lower end of the mounting frame (21), and the front and rear ends of the sliding rod (28) are fixedly connected to the middle of the lower front and rear sides of the mounting frame (21).

4. The steel pipe welding auxiliary device for steel furniture production according to claim 3, characterized in that, The middle part of the drive rod (213) is rotatably connected to the lower right rear opening of the left mounting compartment (11).

5. The steel pipe welding auxiliary device for steel furniture production according to claim 1, characterized in that, The fixing mechanism (3) includes a mounting base (31), a motor (38), and a bevel gear seven (39). A rotating seat (32) is rotatably connected to the upper middle part of the mounting base (31). A rotating disk (33) is fixedly connected to the upper end of the rotating seat (32). Sliding chambers (34) are evenly distributed at the lower end of the rotating disk (33). Threaded rods four (35) are rotatably connected inside each sliding chamber (34). Sliding blocks (36) are threadedly connected to the outer periphery of each threaded rod four (35). A fixed seat (37) is fixedly connected to the upper end of each sliding block (36). A bevel gear eight (310) is fixedly connected to the end of each threaded rod four (35) near the motor (38). Each bevel gear eight (310) meshes with the bevel gear seven (39). The middle part of the bevel gear seven (39) is fixedly connected to the upper drive end of the motor (38).

6. The auxiliary device for welding steel pipes in steel furniture production according to claim 5, characterized in that, The outer periphery of the sliding block (36) is slidably connected to the inside of the sliding chamber (34), and the outer periphery of the fixed seat (37) is slidably connected to the upper opening of the rotating disk (33).

7. The auxiliary device for welding steel pipes in steel furniture production according to claim 5, characterized in that, The ends of the rotating rods (18) near the motor (38) are fixedly connected to the middle of both sides of the mounting base (31), and the upper end of the motor (38) is fixedly connected to the middle of the lower end of the rotating base (32).

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