Wheelchair manufacturing and forming processing automation welding equipment

Abstract

This invention discloses an automated welding equipment for wheelchair manufacturing and forming, belonging to the field of wheelchair welding technology. It includes a mounting frame with a welding mechanism at its top. The welding mechanism includes a welding equipment body rotatably mounted in the middle of the mounting frame. A rotating wheel is fixedly mounted on the outer surface of the welding equipment body, and multiple telescopic welding pipes are arranged on the outer surface of the rotating wheel. A contact sensor is installed on the surface of the welding equipment body near the telescopic welding pipes. A limit mechanism is provided at the top of the mounting frame. This invention, by setting a rotatable rotating wheel and a circumferentially distributed array of telescopic welding pipes, combined with a gear meshing drive structure, can complete multi-point synchronous spot welding around the circumference of the wheelchair components. Simultaneously, a hydraulically driven moving plate enables automatic workpiece alignment. Combined with the sensing linkage between the contact sensor and the electrical connection point, the welding process is automated and coordinated, significantly shortening the wheelchair frame welding cycle and improving processing accuracy.

Description

Technical Field

[0001] This invention relates to the field of wheelchair welding technology, and in particular to an automated welding equipment for wheelchair manufacturing and forming. Background Technology

[0002] Wheelchairs, as an important assistive mobility device for people with mobility impairments, are mostly constructed from spliced ​​metal tubing. The welding of the wheelchair leg supports and supporting tubing is a critical process in the overall manufacturing of wheelchairs, directly determining the structural strength, stability, and appearance of the finished product. Existing welding equipment lacks specific workpiece limiting and clamping structures. During the simultaneous welding of wheelchair tubing at multiple points around the circumference, it is susceptible to displacement and wobbling due to welding vibration and thermal stress, easily leading to welding defects such as misaligned welds, incomplete welds, and missed welds, reducing the strength of the tubing connections. Furthermore, the thin-walled tubing of wheelchairs is highly susceptible to stress deformation during welding due to heat. Summary of the Invention

[0003] The purpose of this invention is to provide an automated welding equipment for wheelchair manufacturing and forming, in order to solve the problems mentioned in the background art, where wheelchair tubes are easily affected by welding vibration and welding thermal stress during multi-point synchronous welding of the circumference, resulting in displacement and shaking, which can easily cause misalignment, incomplete welding, and missing welding.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automated welding equipment for wheelchair manufacturing and forming, comprising a mounting frame, a welding mechanism at the top of the mounting frame, the welding mechanism comprising a welding equipment body rotatably mounted in the middle of the mounting frame, a rotating wheel fixedly mounted on the outer surface of the welding equipment body, a plurality of telescopic welding pipes disposed on the outer surface of the rotating wheel, and a contact sensor mounted on the surface of the welding equipment body near the telescopic welding pipes, a limiting mechanism at the top of the mounting frame, the limiting mechanism comprising a movable plate slidably mounted on the top of the mounting frame, a hydraulic cylinder fixedly mounted on the top of the mounting frame, the output end of the hydraulic cylinder being fixedly connected to the movable plate, a support plate fixedly mounted on the surface of the movable plate, a spring fixedly mounted on the surface of the support plate, a pressure plate assembly disposed at the free end of the spring, and a welding workpiece inserted between the pressure plate assembly and the support plate, and a plurality of electrical connection points disposed circumferentially on the surface of the pressure plate assembly near the contact sensor.

[0005] As a preferred embodiment of the present invention, a second gear is fixedly mounted on the outer surface of the rotating wheel, a rotating rod is rotatably mounted on the surface of the mounting frame, a first gear is fixedly mounted on the outer surface of the rotating rod and the first gear meshes with the second gear, a first motor is fixedly mounted on the surface of the mounting frame, and the output shaft of the first motor is fixedly connected to the rotating rod.

[0006] As a preferred embodiment of the present invention, the telescopic welding pipe includes an electric telescopic component disposed at the output end of the welding equipment body. The output end of the electric telescopic component is provided with a spot welding pipe for welding the workpiece. A servo control box is disposed on the surface of the electric telescopic component. A protective plate for shielding welding debris is fixedly installed on the surface of the telescopic welding pipe near the workpiece.

[0007] As a preferred embodiment of the present invention, right-angled guide plates are fixedly installed on the surfaces of the pressure plate assembly and the support plate that are close to each other, and the welded workpiece is arranged between multiple guide plates.

[0008] As a preferred embodiment of the present invention, the surface of the mounting frame is provided with a cooling assembly, the cooling assembly includes an air pump fixedly installed at the bottom of the mounting frame, a refrigeration box connected to the output end of the air pump is fixedly installed at the bottom of the mounting frame, the cold air source output by the refrigeration box is connected to an air inlet pipe, an air collecting ring is fixedly installed on the surface of the movable plate, and the air inlet pipe is connected to the interior of the support plate through the air collecting ring.

[0009] As a preferred embodiment of the present invention, the pressure plate assembly includes a circular plate fixedly installed at the free end of the spring. The outer surface of the circular plate is connected to the output end of the refrigeration box through an air outlet pipe for receiving low-temperature cold air. A long pipe is installed on the surface of the circular plate, and the long pipe slides through the support plate, with the support plate and the surface of the long pipe in communication.

[0010] As a preferred embodiment of the present invention, a jet ring is rotatably mounted on the surface of the long tube near the welding area, and a plurality of arc-shaped nozzles are connected on the surface of the jet ring for driving the jet ring to rotate by airflow.

[0011] As a preferred embodiment of the present invention, a plurality of arc-shaped tubes are fixedly installed inside the circular plate, and the arc-shaped tubes are connected to the air outlet pipe. An agitator is rotatably installed inside the circular plate, and the agitator rotates and agitates the cold air ejected from the arc-shaped tubes. A plurality of cooling nozzles are provided on the surface of the circular plate near the welding area, and a thin film for air permeability is provided on the surface of the circular plate near the cooling nozzles.

[0012] As a preferred embodiment of the present invention, the surface of the air outlet pipe is provided with an auxiliary component, the auxiliary component including a fixed plate fixedly installed on the surface of the mounting bracket, and the air outlet pipe slidably passes through the fixed plate. Guide wires are slidably passed through the air outlet pipes at both ends of the fixed plate. Rolling wheels for driving the guide wires to rotate are rotatably installed inside the fixed plate. A second motor is fixedly installed on the outer surface of the fixed plate, and the output shaft of the second motor is fixedly connected to the rolling wheels.

[0013] As a preferred embodiment of the present invention, a filter box for filtering the inside of the air outlet pipe is fixedly installed on the surface of the mounting bracket, a cleaning box is fixedly installed inside the fixing plate, and the guide wire slides through the cleaning box. A cleaning wheel for cleaning and drying the guide wire is rotatably installed inside the cleaning box, and the cleaning wheel is connected to the rolling wheel by a belt drive.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a rotatable wheel and a telescopic welded pipe distributed in a circumferential array, combined with a gear meshing drive structure, can complete multi-point synchronous spot welding operations around the circumference of the wheelchair pipe; at the same time, it is equipped with a hydraulically driven moving plate to realize automatic workpiece alignment, and combined with the sensing linkage of contact sensors and electrical connection points, realizes automated and coordinated operation of the welding process, which greatly shortens the cycle time of wheelchair frame welding and improves processing accuracy.

[0015] 2. This invention forms an elastic clamping structure by setting a support plate and spring in conjunction with a pressure plate assembly. Combined with a right-angled guide plate, it provides multi-directional limiting and guiding for wheelchair fittings, which can flexibly clamp and fix the welded workpiece, effectively preventing the workpiece from shifting, shaking, and misaligning due to vibration and thermal stress during the welding process; effectively reducing the defect rate of incomplete welds and ensuring the consistency of multiple welding points.

[0016] 3. This invention uses an integrated cooling assembly consisting of an air pump, a cooling box, an air collecting ring, an air jet ring, and a cooling nozzle to continuously deliver low-temperature airflow to the welding area. Combined with an arc-shaped pipe and agitator bars, the cold air is mixed and disturbed, achieving uniform heat dissipation at the welding point from all directions. It can quickly dissipate the concentrated heat generated by multi-point synchronous welding, effectively solve the problems of high-temperature bending, warping, and deformation of thin-walled tubing for wheelchairs, reduce the range of the heat-affected zone during welding, and reduce high-temperature oxidation of metal.

[0017] 4. The present invention uses a protective plate on the outside of the telescopic welded pipe to directly block welding sparks and slag splashes, avoiding scratches and burns on the pipe surface; at the same time, the arc-shaped nozzle drives the air jet ring to rotate, forming a surrounding airflow protection, which promptly blows away welding fumes and residual debris, and works with the cooling nozzle to uniformly control the temperature and shape the weld, making the weld joints regular and the surface flat, reducing weld joint unevenness and burning defects.

[0018] 5. This invention, by setting a filter box inside the pipeline and matching it with a guide wire, a rolling wheel, a cleaning box and a cleaning wheel to form an automatic auxiliary cleaning structure, can clean the welding slag, dust and impurities inside the gas pipe in real time, prevent pipeline blockage and airflow obstruction, and ensure that the cooling of the welding area can operate stably for a long time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the telescopic welded pipe structure of the present invention; Figure 4 This is a schematic diagram of the welding equipment body structure of the present invention; Figure 5 This is a schematic diagram of the limiting mechanism of the present invention; Figure 6 This is a schematic diagram of the cooling assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the fixing plate of the present invention; Figure 8 This is a schematic diagram of the pressure plate assembly of the present invention; Figure 9 This is a schematic diagram of the internal structure of the circular plate of the present invention.

[0020] In the diagram: 1. Mounting frame; 2. Welding mechanism; 21. First motor; 22. Rotating rod; 23. First gear; 24. Second gear; 25. Rotary wheel; 26. Welding equipment body; 27. Servo control box; 28. Telescopic welded pipe; 29. ​​Protective plate; 210. Contact sensor; 211. Electrical connection point; 3. Limiting mechanism; 31. Moving plate; 32. Support plate; 33. Hydraulic cylinder; 34. Pressure plate assembly; 341. Circular plate; 342. Arc-shaped tube; 343. Stirring bar; 3 44. Membrane; 345. Cooling nozzle; 35. Guide plate; 36. Cooling assembly; 361. Air pump; 362. Filter box; 363. Refrigeration box; 364. Auxiliary components; 3641. Feed guide wire; 3642. Rolling wheel; 3643. Belt; 3644. Cleaning box; 3645. Fixing plate; 3646. Second motor; 365. Air outlet pipe; 366. Air inlet pipe; 367. Air jet ring; 368. Air collection ring; 369. Long pipe; 37. Spring; 4. Welded workpiece. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-9This invention provides an automated welding equipment for wheelchair manufacturing and forming, including a mounting frame 1. A welding mechanism 2 is provided at the top of the mounting frame 1. The welding mechanism 2 includes a welding equipment body 26 rotatably mounted in the middle of the mounting frame 1. A rotating wheel 25 is fixedly mounted on the outer surface of the welding equipment body 26. A plurality of telescopic welding pipes 28 are provided on the outer surface of the rotating wheel 25. A contact sensor 210 is installed on the surface of the welding equipment body 26 near the telescopic welding pipes 28. A limiting mechanism 3 is provided at the top of the mounting frame 1. The limiting mechanism 3 includes a movable plate 31 slidably mounted on the top of the mounting frame 1. A hydraulic cylinder 33 is fixedly mounted at the top of the mounting frame 1. The output end of the hydraulic cylinder 33 is fixedly connected to the movable plate 31. A support plate 32 is fixedly mounted on the surface of the movable plate 31. A spring 37 is fixedly mounted on the surface of the support plate 32. A pressure plate assembly 34 is provided at the free end of the spring 37. The welding workpiece 4 is inserted between the pressure plate assembly 34 and the support plate 32. A plurality of electrical connection points 211 are provided on the circumference of the surface of the pressure plate assembly 34 near the contact sensor 210.

[0023] In this process, the output end of the hydraulic cylinder 33 pushes the movable plate 31, which is slidably mounted on the top of the mounting frame 1, causing the support plate 32 fixed on the surface of the movable plate 31 to move synchronously. This causes the support plate 32 and the pressure plate assembly 34 to gradually approach the workpiece. As the distance between them decreases, the spring 37 is compressed, generating an elastic force that causes the pressure plate assembly 34 to flexibly press the workpiece 4, completing the clamping and limiting of the workpiece. At this time, the contact sensor 210 mounted on the surface of the welding equipment body 26 contacts the electrical connection point 211 arranged circumferentially on the surface of the pressure plate assembly 34, triggering a sensing signal. After the contact sensor 210 detects the closing signal of the electrical connection point 211, the PLC or controller instructs the first motor 21 to start rotating and synchronously controls the electric telescopic component to extend according to a preset stroke. The welding equipment body 26 begins to rotate, and the rotating wheel 25 fixed on its outer surface rotates synchronously, causing multiple telescopic welding pipes 28 arranged on the outer surface of the rotating wheel 25 to move in a circle around the workpiece 4. At the same time, the telescopic welding pipes 28 extend to the welding station to perform synchronous spot welding operations on multiple welding points of multiple wheelchair workpieces.

[0024] In some embodiments, a second gear 24 is fixedly mounted on the outer surface of the rotating wheel 25, a rotating rod 22 is rotatably mounted on the surface of the mounting bracket 1, a first gear 23 is fixedly mounted on the outer surface of the rotating rod 22 and the first gear 23 meshes with the second gear 24, a first motor 21 is fixedly mounted on the surface of the mounting bracket 1, and the output shaft of the first motor 21 is fixedly connected to the rotating rod 22.

[0025] In this process, the first motor 21 drives the rotating rod 22, which is fixedly connected to it, to rotate at a constant speed. The rotating rod 22 drives the first gear 23 to rotate, and the rotation of the first gear 23 drives the second gear 24 to rotate synchronously, which in turn drives the rotating wheel 25 to rotate. The rotating wheel 25 drives the welding equipment body 26 and multiple telescopic welding pipes 28 on the outer surface of the rotating wheel 25 to perform uniform circular motion around the workpiece 4. During the welding process, the first motor 21 continuously and stably outputs power, and the gear meshing transmission ensures that the rotation speed of the rotating wheel 25 is uniform, so that the telescopic welding pipes 28 can move smoothly along the circumference of the workpiece, realizing all-round, dead-angle-free welding of the annular welding area of ​​the workpiece.

[0026] In some embodiments, the telescopic welding pipe 28 includes an electric telescopic component disposed at the output end of the welding equipment body 26. The output end of the electric telescopic component is provided with a spot welding pipe for welding the workpiece 4. A servo control box 27 is disposed on the surface of the electric telescopic component. A protective plate 29 for shielding welding debris is fixedly installed on the surface of the telescopic welding pipe 28 near the workpiece 4.

[0027] In this process, the electric telescopic component in the telescopic welded pipe 28 receives control signals and adjusts its telescopic stroke according to the specifications of the workpiece 4 and the distance between the welding points, driving the spot welded pipe at its output end to move to the appropriate welding position. During this process, the servo control box 27 mounted on the surface of the electric telescopic component realizes real-time and precise closed-loop control of the telescopic speed of the electric telescopic component through the internally integrated servo drive circuit. The servo control box 27 first receives the command signal transmitted by the external control unit, and at the same time collects the actual telescopic speed and current telescopic position data of the electric telescopic component in real time. Then, it compares and analyzes the collected actual data with the preset command parameters, automatically outputs adjustment signals, dynamically corrects the driving current and driving frequency of the electric telescopic component, and then precisely controls the telescopic speed of the electric telescopic component to ensure that the telescopic process is smooth and uniform, and avoids the positioning deviation of the spot welded pipe due to excessive speed. It should be noted that this is a conventional method in the prior art and will not be elaborated further. This ensures that the welding parameters match the workpiece specifications. When the spot welding pipe arrives at the welding station, it begins to perform spot welding on the workpiece 4. The welding slag, sparks and debris generated during the welding process are blocked by the protective plate 29 fixedly installed on the side of the telescopic welding pipe 28 near the workpiece 4, so as to prevent debris from splashing onto the surface of the workpiece 4 or other parts of the equipment.

[0028] In some embodiments, right-angled guide plates 35 are fixedly installed on the surfaces of the pressure plate assembly 34 and the support plate 32 that are close to each other, and the welding workpiece 4 is disposed between a plurality of guide plates 35.

[0029] In this process, the wheelchair fitting is aligned between multiple right-angled guide plates 35 that are fixed close to each other on the pressure plate assembly 34 and the support plate 32. The right-angled guide plates 35 play a preliminary guiding role for the welding workpiece 4, guiding the welding workpiece 4 to be placed quickly and accurately in the preset clamping position, and avoiding the welding workpiece 4 from being misplaced.

[0030] In some embodiments, a cooling assembly 36 is provided on the surface of the mounting frame 1. The cooling assembly 36 includes an air pump 361 fixedly installed at the bottom of the mounting frame 1. A refrigeration box 363 connected to the output end of the air pump 361 is fixedly installed at the bottom of the mounting frame 1. The cold air source output by the refrigeration box 363 is connected to an air inlet pipe 366. An air collecting ring 368 is fixedly installed on the surface of the moving plate 31. The air inlet pipe 366 is connected to the interior of the support plate 32 through the air collecting ring 368.

[0031] The system comprises an air pump 361 that draws in external air and generates airflow, which is then delivered to a cooling box 363 connected to the output of the air pump 361. The cooling box 363 cools the airflow, creating low-temperature cold air. This low-temperature cold air is then delivered to a collecting ring 368 fixed to the surface of the moving plate 31 via an air inlet pipe 366 connected to the output of the cooling box 363. The collecting ring 368 distributes the low-temperature cold air evenly before guiding it into the interior of the support plate 32. The cold air flows within the support plate 32, gradually penetrating the contact area between the support plate 32 and the workpiece 4 being welded, while simultaneously diffusing outwards to the periphery of the welding area. This provides real-time cooling to the workpiece 4 and the welding points, dissipating the concentrated heat generated during welding.

[0032] In some embodiments, the pressure plate assembly 34 includes a circular plate 341 fixedly mounted on the free end of the spring 37. The outer surface of the circular plate 341 is connected to the output end of the refrigeration box 363 through the air outlet pipe 365 for receiving low-temperature cold air. A long pipe 369 is installed on the surface of the circular plate 341. The long pipe 369 slides through the support plate 32, and the support plate 32 is connected to the surface of the long pipe 369.

[0033] In this process, a portion of the low-temperature cold air produced by the refrigeration box 363 is continuously pumped into the interior of the circular plate 341 through the air outlet pipe 365, forming a positive pressure chamber inside the circular plate 341. This causes the cooling airflow to be evenly sprayed out from the cooling nozzles set on the surface of the circular plate 341 and penetrate into the workpiece clamping surface. At the same time, the long pipe 369 connected to the surface of the circular plate 341 synchronously transports cold air. The long pipe 369 slides through the support plate 32, allowing the cold air to be transported to the vicinity of the welding area through the long pipe 369, further expanding the cooling range. After welding is completed, the air pump 361 continues to work, realizing airflow circulation through the air outlet pipe 365 and the long pipe 369 until the welded workpiece 4 is cooled down, maintaining welding stability.

[0034] In some embodiments, a jet ring 367 is rotatably mounted on the surface of the long tube 369 near the welding area. The surface of the jet ring 367 is connected to a plurality of arc-shaped nozzles for driving the jet ring 367 to rotate by jetting out airflow.

[0035] The cryogenic cold air is delivered to the inside of the jet ring 367 through the long pipe 369. Because the surface of the jet ring 367 is connected to multiple arc-shaped nozzles, the cold air is ejected at high speed from these nozzles under pressure. The arc-shaped structure of the nozzles generates a reaction force when the cold air is ejected, causing the jet ring 367 to rotate autonomously around the long pipe 369. During the rotation of the jet ring 367, the arc-shaped nozzles continuously spray cryogenic cold air into the welding area, forming a ring-shaped rotating airflow that surrounds and envelops the entire welding point. This ensures that the cold air evenly covers all parts of the welding area, avoiding cooling blind spots. Simultaneously, the rotating airflow blows away fumes and slag generated during the welding process from the welding point, reducing impurity adhesion.

[0036] In some embodiments, a plurality of arc-shaped tubes 342 are fixedly installed inside the circular plate 341, and the arc-shaped tubes 342 are connected to the air outlet pipe 365. An agitator 343 is rotatably installed inside the circular plate 341, and the agitator 343 rotates and agitates the cold air ejected by the arc-shaped tubes 342. A plurality of cooling nozzles 345 are provided on the surface of the circular plate 341 near the welding area, and a thin film 344 for air permeability is provided on the surface of the circular plate 341 near the cooling nozzles 345.

[0037] The low-temperature cold air enters the circular plate 341 through the outlet pipe 365. It first flows into multiple arc-shaped pipes 342 fixedly installed inside the circular plate 341. These arc-shaped pipes guide the cold air, causing it to be sprayed directionally along an arc. The sprayed cold air impacts a rotating agitator 343 inside the circular plate 341, causing the agitator 343 to rotate around a central axis inside the circular plate 341. During rotation, the agitator 343 thoroughly agitates the cold air inside the circular plate 341, ensuring a uniform temperature distribution and preventing localized excessively high or low temperatures. The mixed low-temperature cold air then passes through a breathable membrane 344 installed near the welding area of ​​the circular plate 341. The membrane 344 intercepts welding slag and dust from the air, preventing impurities from entering the circular plate 341 and clogging the pipes, while allowing the cold air to pass through. Finally, uniform low-temperature cold air is dispersed through multiple cooling nozzles 345 set on the surface of the circular plate 341 to gently cool the welding area and the workpiece clamping surface, avoiding strong airflow from disturbing the workpiece and affecting the welding accuracy.

[0038] In some embodiments, an auxiliary component 364 is provided on the surface of the air outlet pipe 365. The auxiliary component 364 includes a fixing plate 3645 fixedly installed on the surface of the mounting bracket 1, and the air outlet pipe 365 slides through the fixing plate 3645. Guide wires 3641 slide through the air outlet pipes 365 at both ends of the fixing plate 3645. The working end of the guide wire 3641 located inside the air outlet pipe 365 is provided with a flexible scraper that fits against the inner wall of the air outlet pipe 365. A rolling wheel 3642 for driving the guide wire 3641 to rotate is rotatably installed inside the fixing plate 3645. A second motor 3646 is fixedly installed on the outer surface of the fixing plate 3645. The output shaft of the second motor 3646 is fixedly connected to the rolling wheel 3642.

[0039] The output shaft of the second motor 3646 drives the rolling wheel 3642, which is rotatably mounted inside the fixed plate 3645, to rotate at a constant speed. The rolling wheel 3642 is in contact with the guide wire 3641. The rotation of the rolling wheel 3642 causes the guide wire 3641 to slide back and forth along the inside of the vent pipe 365. The guide wire 3641 slides through the vent pipes 365 at both ends of the fixed plate 3645, covering the entire pipeline of the vent pipe 365. During the reciprocating sliding process, the surface of the guide wire 3641 is in close contact with the inner wall of the vent pipe 365, scraping off welding slag, dust and other impurities attached to the inner wall of the pipeline, preventing the accumulation of impurities and the blockage of the pipeline.

[0040] In some embodiments, a filter box 362 for filtering the inside of the air outlet pipe 365 is fixedly installed on the surface of the mounting bracket 1, a cleaning box 3644 is fixedly installed inside the fixing plate 3645, and a guide wire 3641 slides through the cleaning box 3644. A cleaning wheel for cleaning and drying the guide wire 3641 is rotatably installed inside the cleaning box 3644, and the cleaning wheel is connected to the rolling wheel 3642 via a belt 3643.

[0041] The filter box 362, fixed to the surface of the mounting bracket 1, first pre-filters the airflow entering the outlet pipe 365, intercepting large particles of welding slag and dust impurities carried in the airflow to prevent large particles from entering the pipe and causing blockage, thus ensuring smooth airflow. Simultaneously, when the second motor 3646 drives the rolling wheel 3642 to rotate, the rolling wheel 3642 drives the cleaning wheel inside the cleaning box 3644 to rotate synchronously via the belt 3643. After the guide wire 3641 slides back and forth inside the outlet pipe 365, scraping away impurities, it enters the cleaning box 3644. At this time, the rotating cleaning wheel is in close contact with the surface of the guide wire 3641, scraping and cleaning the impurities attached to the surface of the guide wire 3641, and simultaneously drying the guide wire 3641 to prevent it from carrying impurities back into the outlet pipe 365 and causing secondary pollution.

[0042] Working principle: The output end of the hydraulic cylinder 33 pushes the movable plate 31, which is slidably mounted on the top of the mounting frame 1, causing the support plate 32 fixed on the surface of the movable plate 31 to move synchronously. This causes the support plate 32 and the pressure plate assembly 34 to gradually approach the workpiece. As the distance between them decreases, the spring 37 is compressed, generating an elastic force that drives the pressure plate assembly 34 to flexibly press the workpiece 4, completing the clamping and limiting of the workpiece. At this time, the contact sensor 210 mounted on the surface of the welding equipment body 26 contacts the electrical connection point 211 arranged around the circumference of the pressure plate assembly 34, triggering a sensing signal and starting the welding mechanism 2. The welding equipment body 26 starts to rotate, and the rotating wheel 25 fixed on its outer surface rotates synchronously, driving multiple telescopic welding pipes 28 set on the outer surface of the rotating wheel 25 to make a circular motion around the welding workpiece 4. The electric telescopic component in the telescopic welding pipe 28 receives the control signal and adjusts its own telescopic stroke according to the specifications of the welding workpiece 4 and the distance of the welding point, driving the spot welding pipe set at its output end to move to the appropriate welding position. When the spot welding pipe reaches the welding position, it begins to perform spot welding on the welding workpiece 4.

[0043] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. An automated welding equipment for wheelchair manufacturing and forming, comprising a mounting frame (1), characterized in that: The top of the mounting frame (1) is provided with a welding mechanism (2), which includes a welding equipment body (26) rotatably mounted in the middle of the mounting frame (1). A rotating wheel (25) is fixedly mounted on the outer surface of the welding equipment body (26), and a plurality of telescopic welding pipes (28) are provided on the outer surface of the rotating wheel (25). A contact sensor (210) is installed on the surface of the welding equipment body (26) near the telescopic welding pipes (28). The top of the mounting frame (1) is provided with a limiting mechanism (3), which includes a movable plate slidably mounted on the top of the mounting frame (1). (31) A hydraulic cylinder (33) is fixedly installed at the top of the mounting bracket (1). The output end of the hydraulic cylinder (33) is fixedly connected to the moving plate (31). A support plate (32) is fixedly installed on the surface of the moving plate (31). A spring (37) is fixedly installed on the surface of the support plate (32). A pressure plate assembly (34) is provided at the free end of the spring (37). The welded workpiece (4) is inserted between the pressure plate assembly (34) and the support plate (32). Multiple electrical connection points (211) are provided on the circumference of the surface of the pressure plate assembly (34) near the contact sensor (210).

2. The automated welding equipment for wheelchair manufacturing and forming according to claim 1, characterized in that: The outer surface of the rotating wheel (25) is fixedly mounted with a second gear (24), the surface of the mounting bracket (1) is rotatably mounted with a rotating rod (22), the outer surface of the rotating rod (22) is fixedly mounted with a first gear (23), and the first gear (23) meshes with the second gear (24). The surface of the mounting bracket (1) is fixedly mounted with a first motor (21), and the output shaft of the first motor (21) is fixedly connected to the rotating rod (22).

3. The automated welding equipment for wheelchair manufacturing and forming according to claim 1, characterized in that: The telescopic welding pipe (28) includes an electric telescopic component installed at the output end of the welding equipment body (26). The output end of the electric telescopic component is provided with a spot welding pipe for welding the workpiece (4). A servo control box (27) is provided on the surface of the electric telescopic component. A protective plate (29) for shielding welding debris is fixedly installed on the surface of the telescopic welding pipe (28) near the workpiece (4).

4. The automated welding equipment for wheelchair manufacturing and forming according to claim 1, characterized in that: The surfaces of the pressure plate assembly (34) and the support plate (32) that are close to each other are fixedly equipped with right-angled guide plates (35), and the welding workpiece (4) is arranged between multiple guide plates (35).

5. The automated welding equipment for wheelchair manufacturing and forming according to claim 1, characterized in that: The mounting bracket (1) is provided with a cooling component (36), which includes an air pump (361) fixedly installed at the bottom of the mounting bracket (1). A refrigeration box (363) connected to the output end of the air pump (361) is fixedly installed at the bottom of the mounting bracket (1). The cold air source output by the refrigeration box (363) is connected to an air inlet pipe (366). An air collecting ring (368) is fixedly installed on the surface of the moving plate (31). The air inlet pipe (366) is connected to the interior of the support plate (32) through the air collecting ring (368).

6. The automated welding equipment for wheelchair manufacturing and forming according to claim 1, characterized in that: The pressure plate assembly (34) includes a circular plate (341) fixedly installed at the free end of the spring (37). The outer surface of the circular plate (341) is connected to the output end of the refrigeration box (363) through the air outlet pipe (365) for receiving low-temperature cold air. A long pipe (369) is installed on the surface of the circular plate (341). The long pipe (369) slides through the support plate (32), and the support plate (32) is connected to the surface of the long pipe (369).

7. The automated welding equipment for wheelchair manufacturing and forming according to claim 6, characterized in that: A jet ring (367) is rotatably mounted on the surface of the long tube (369) near the welding area. Multiple arc-shaped nozzles are connected to the surface of the jet ring (367) for rotating the jet ring (367) by jetting out airflow.

8. The automated welding equipment for wheelchair manufacturing and forming according to claim 6, characterized in that: The circular plate (341) has multiple arc-shaped tubes (342) fixedly installed inside, and the arc-shaped tubes (342) are connected to the air outlet pipe (365). The circular plate (341) has a stirring bar (343) rotatably installed inside, and the stirring bar (343) rotates and stirs the cold air sprayed out by the arc-shaped tubes (342). The circular plate (341) has multiple cooling nozzles (345) on the surface near the welding area, and the circular plate (341) has a thin film (344) for air permeability on the surface near the cooling nozzles (345).

9. The automated welding equipment for wheelchair manufacturing and forming according to claim 6, characterized in that: The surface of the air outlet pipe (365) is provided with an auxiliary component (364). The auxiliary component (364) includes a fixed plate (3645) fixedly installed on the surface of the mounting bracket (1), and the air outlet pipe (365) slides through the fixed plate (3645). The air outlet pipe (365) at both ends of the fixed plate (3645) is slidably connected with a guide wire (3641). The working end of the guide wire (3641) located inside the air outlet pipe (365) is provided with a flexible scraper that fits against the inner wall of the air outlet pipe (365). The fixed plate (3645) is rotatably installed with a rolling wheel (3642) for driving the guide wire (3641) to rotate. The outer surface of the fixed plate (3645) is fixedly installed with a second motor (3646), and the output shaft of the second motor (3646) is fixedly connected to the rolling wheel (3642).

10. The automated welding equipment for wheelchair manufacturing and forming according to claim 9, characterized in that: A filter box (362) for filtering the inside of the air outlet pipe (365) is fixedly installed on the surface of the mounting bracket (1). A cleaning box (3644) is fixedly installed inside the fixing plate (3645), and a guide wire (3641) slides through the cleaning box (3644). A cleaning wheel for cleaning and drying the guide wire (3641) is rotatably installed inside the cleaning box (3644), and the cleaning wheel is connected to the rolling wheel (3642) via a belt (3643).

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