Automobile frame welding tool

Abstract

The utility model relates to the technical field of frame welding discloses an automobile frame welding tool, including work table, the top fixed connection of work table has stainless steel sheet, the top of stainless steel sheet is provided with pneumatic clamping mechanism, pneumatic clamping mechanism is used for the pneumatic clamping of frame, the top rear side of stainless steel sheet is provided with cleaning mechanism, cleaning mechanism is used for the cleaning of waste residue, the top left and right sides of stainless steel sheet all are fixedly connected with auxiliary support mechanism, the inside front side of work table is provided with transmission mechanism. In the utility model, stainless steel support base and positioning pin realize tool quick positioning installation, the rubber buffer pad in spacing groove and telescopic support rod endow mechanism support and height fine adjustment function, through the synchronous clamping of multiple groups of mechanisms two frames, realize double station parallel welding, effectively solve the time -consuming problem of traditional tool dismounting one by one, adapt to the efficient production demand.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frame welding technology, and in particular to a welding fixture for automobile frames. Background Technology

[0002] In the automotive manufacturing industry, the chassis, as a load-bearing component of a car, directly affects the safety and reliability of the entire vehicle through its welding quality. In the early days, automotive chassis welding relied heavily on manual operation, with welders using their experience for positioning and welding. While this method offered some flexibility, it was inefficient, and the welding quality was greatly affected by human factors. As the automotive industry expanded and market demand grew, traditional welding methods could no longer meet the demands for efficient and high-quality production. As a result, automotive chassis welding fixtures emerged, which can accurately position and stably clamp workpieces, reduce welding deformation, and improve welding quality and efficiency, playing a crucial role in modern automotive production.

[0003] A search revealed Chinese patent publication number CN118544023B. This invention relates to the field of automotive crossbeam welding technology, specifically proposing a welding fixture for an assembled automotive rear subframe crossbeam. The fixture includes a tooling table, with a positioning and securing mechanism and a welding mechanism mounted on its top. This welding fixture, through the cooperation of the positioning and securing mechanism and the welding mechanism, not only positions and aligns the two pipe components and the triangular connecting strip within the crossbeam, but also, when the welding mechanism moves downwards to weld the crossbeam, uses two moving guide groups that cooperate with two guide grooves to guide the welding machine's welding trajectory. The guide and the moving guide group are mutually locked and limited to ensure that the welding machine accurately welds the connection between the pipe fitting and the triangular connecting strip, which greatly improves the welding accuracy and welding quality. However, in actual use, the automotive frame welding fixture has insufficient disassembly and assembly efficiency. The positioning and clamping structure of ordinary welding fixtures mostly adopts manual bolts, nuts or single mechanical clamps. The workpiece clamping at each station needs to be operated one by one, and multiple positioning points need to be tightened and fixed in sequence. The time spent on clamping at the front and rear stations causes a rhythm imbalance, forming a production bottleneck and greatly slowing down the overall welding speed, making it difficult to meet the needs of high-efficiency production. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an automotive frame welding fixture, which aims to improve the insufficient disassembly and assembly efficiency of automotive frame welding fixtures. The positioning and clamping structure of ordinary welding fixtures mostly adopts manual bolts, nuts or single mechanical clamps, which greatly slows down the overall welding speed and makes it difficult to meet the needs of high-efficiency production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding fixture for automobile frames, including a workbench, a stainless steel plate fixedly connected to the top of the workbench, a pneumatic clamping mechanism provided on the top of the stainless steel plate for pneumatically clamping the frame, a cleaning mechanism provided on the rear side of the top of the stainless steel plate for cleaning waste residue, auxiliary support mechanisms fixedly connected to the left and right sides of the top of the stainless steel plate, a transmission mechanism provided on the front side of the interior of the workbench, and a collection mechanism provided on the right side of the interior of the workbench.

[0006] The pneumatic clamping mechanism includes multiple stainless steel support bases. The bottom of each stainless steel support base is fixedly connected to the top perimeter of a stainless steel plate. Positioning pins are fixedly connected to the four corners of the outer side of the top front stainless steel support base. A limit groove is formed on the top of the stainless steel support base. A rubber buffer pad is fixedly connected to the top of the inner side of the limit groove. A telescopic support rod is fixedly connected to the top of the rubber buffer pad. An alloy clamping plate is fixedly connected to the top of the telescopic support rod. A concave clamping block is fixedly connected to the front side of the alloy clamping plate. Two pneumatic duckbill clamping plates are fixedly connected to the upper and lower ends of the front side of the concave clamping block.

[0007] Through the above technical solution: the stainless steel support base of the pneumatic clamping mechanism is fixed around the top of the stainless steel plate to form a stable load-bearing structure. The positioning pins at the corners of the base are connected to the corresponding holes to achieve quick and accurate positioning of the tooling, reducing debugging time. The rubber buffer pads in the limiting groove and the telescopic support rods constitute a buffer adjustment system, which can adapt to differences in part size, avoid rigid collisions and finely adjust the height to ensure accurate welding position. The alloy clamping plate, concave clamping block and pneumatic duckbill clamping plate are combined to evenly distribute the clamping force through contour design to prevent indentation of parts. Multiple sets of mechanisms work together to simultaneously clamp dual-station frames, realize parallel welding, and significantly improve work efficiency and quality.

[0008] As a further description of the above technical solution:

[0009] The cleaning mechanism includes a mounting plate, the bottom of which is fixedly connected to the top rear left end of a stainless steel plate. A geared motor is fixedly connected to the top of the mounting plate, and a ball screw is fixedly connected to the output end of the geared motor. A limit block is fixedly connected to the right end of the ball screw, and a sliding hole plate is slidably connected to the outside of the ball screw. A protective mounting frame is fixedly connected to the front side of the sliding hole plate, and a small fan is fixedly connected to the inner side of the protective mounting frame.

[0010] Through the above technical solution: the mounting plate of the cleaning mechanism is fixed to the left rear side of the stainless steel plate, the geared motor outputs stable power, and drives the ball screw to convert the rotational motion into the linear reciprocating motion of the sliding plate. The right end limit block precisely controls the stroke, and the mounting protective frame on the front side of the sliding plate firmly protects the small fan. As the sliding plate moves, the fan forms a dynamic blowing area above the welding station. During welding, the fan runs continuously to generate airflow, which, in conjunction with the movement of the sliding plate, quickly covers the welding area, removes welding slag and debris in a timely manner, avoids the tediousness of manual operation, ensures the continuity of the production line operation, and improves production and cleaning efficiency.

[0011] As a further description of the above technical solution:

[0012] The auxiliary support mechanism includes two concave support plates. The bottom of each of the two concave support plates is fixedly connected to the top left and right sides of the stainless steel plate. A hydraulic rod is fixedly connected to the bottom of each adjacent side inside the two concave support plates. An electromagnetic clamping assembly is fixedly connected to the output end of each of the two hydraulic rods.

[0013] The above technical solution involves two concave support plates of the auxiliary support mechanism symmetrically fixed on both sides of the top of the stainless steel plate, which not only enhances the load-bearing strength but also provides a regular installation space. The hydraulic rods inside the concave support plates can be precisely adjusted and extended according to the frame size and welding requirements, flexibly supporting frames of different specifications.

[0014] As a further description of the above technical solution:

[0015] The two electromagnetic clamping assemblies include sliding blocks, the bottoms of which are fixedly connected to the output ends of two hydraulic rods, and electromagnetic clamps are fixedly connected to adjacent sides of the two sliding blocks.

[0016] Through the above technical solution: the electromagnetic clamping component at the output end of the hydraulic rod further stabilizes the support, the sliding block ensures precise movement, and the electromagnetic clamp uses suction to quickly adsorb the frame, avoiding wear and loosening of traditional clamps. After the frame is in place, the hydraulic rod extends, and the electromagnetic clamp is energized to generate a strong magnetic force, which counteracts welding thermal stress and deformation force.

[0017] As a further description of the above technical solution:

[0018] The transmission mechanism includes an air pump, the bottom of which is fixedly connected to the front side of the inside of the workbench. An air pipe groove is provided at the top center of the front side of the workbench. An air supply pipe is fixedly connected to the output end of the air pump. A control component is fixedly connected to the front end of the air supply pipe through the air pipe groove.

[0019] The above technical solution involves installing the air pump of the transmission mechanism inside the front of the workbench, and supplying stable air to the pneumatic clamping mechanism through the air pipe groove and air supply pipe, thereby improving the automation level of the tooling and production efficiency.

[0020] As a further description of the above technical solution:

[0021] The control component includes a console, the rear of which is fixedly connected to the front end of the gas supply pipe, and the top of the console is fixedly connected to multiple control buttons.

[0022] Through the above technical solution: the control console of the control component is connected to the gas supply pipe, forming the core of power transmission and control. The control buttons on the top are connected to various mechanisms through circuits. Operators can operate the pneumatic clamping function with one button, accurately control the welding process, and improve the convenience of operation and production safety.

[0023] As a further description of the above technical solution:

[0024] Metal pads are fixedly connected to the four corners of the top of the stainless steel plate, and metal rings are fixedly connected to the top of each of the metal pads.

[0025] The above technical solution uses metal pads and metal rings at the four corners of the top of the stainless steel plate to enhance the connection strength of the tooling, facilitate hoisting and fixing, and ensure stable operation of the tooling under complex working conditions.

[0026] As a further description of the above technical solution:

[0027] The collection mechanism includes a handle collection box, which is slidably connected to the inside right side of the workbench. Cleaning grooves are provided on the top right side of both the workbench and the stainless steel plate.

[0028] Through the above technical solution: the collection mechanism focuses on waste slag treatment, and the cleaning groove on the right side of the workbench and stainless steel plate guides the welding slag blown out by the cleaning mechanism into the drawer-type handle collection box, which is convenient for operators to pull out and clean, avoids the accumulation of welding slag, and ensures efficient and continuous operation of the welding production line.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the stainless steel support base and positioning pin enable quick positioning and installation of the tooling. The rubber buffer pad and telescopic support rod in the limiting groove provide the mechanism with support and height fine adjustment functions. The adjustment ensures the accurate position of the weld. The alloy clamping plate, combined with the concave clamping block and the pneumatic duckbill clamping plate, evenly fits the irregular parts of the frame, avoiding the indentation of traditional clamps. By using multiple sets of mechanisms to clamp two frames simultaneously, parallel welding at two workstations can be achieved, effectively solving the time-consuming problem of disassembling and assembling traditional tooling one by one, and adapting to the needs of high-efficiency production.

[0031] 2. In this utility model, the fixed connection between the mounting plate and the stainless steel plate ensures structural stability. The geared motor drives the ball screw to drive the sliding plate to reciprocate, so that the small fan in the mounting protective frame forms a dynamic blowing area, which quickly covers the slag accumulation area of ​​the welding station. The continuous operation of the fan, combined with the linear movement of the sliding plate, can promptly remove welding slag, debris and other impurities generated during the welding process, effectively optimize the production process, and meet the high-efficiency requirements of industrial welding scenarios. Attached Figure Description

[0032] Figure 1 This is a perspective view of a welding fixture for an automobile frame proposed in this utility model;

[0033] Figure 2 This is a front view of a welding fixture for an automobile frame proposed in this utility model;

[0034] Figure 3 This is a structural exploded view of the transmission mechanism in an automotive frame welding fixture proposed in this utility model;

[0035] Figure 4 This is a structural exploded view of a pneumatic clamping mechanism in an automotive frame welding fixture proposed in this utility model;

[0036] Figure 5 This is a structural exploded view of an auxiliary support mechanism in an automotive frame welding fixture proposed in this utility model;

[0037] Figure 6 This is a structural breakdown diagram of the cleaning mechanism in an automotive frame welding fixture proposed in this utility model.

[0038] Legend:

[0039] 1. Workbench; 2. Stainless steel plate; 3. Pneumatic clamping mechanism; 301. Stainless steel support base; 302. Positioning pin; 303. Rubber buffer pad; 304. Limiting groove; 305. Telescopic support rod; 306. Alloy clamping plate; 307. Concave clamping block; 308. Pneumatic duckbill clamping plate; 4. Cleaning mechanism; 401. Mounting plate; 402. Gear motor; 403. Ball screw; 404. Sliding plate; 405. Mounting protective frame; 406. Small fan; 4 7. Limiting block; 5. Auxiliary support mechanism; 501. Concave support plate; 502. Hydraulic rod; 503. Electromagnetic clamping assembly; 5031. Sliding block; 5032. Electromagnetic clamp; 6. Transmission mechanism; 601. Air pump; 602. Air pipe groove; 603. Air supply pipe; 604. Control assembly; 6041. Control console; 6042. Control button; 7. Metal pad; 8. Metal ring; 9. Collection mechanism; 901. Cleaning groove; 902. Handle collection box. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model provides: a welding fixture for automobile frames, including a workbench 1, a stainless steel plate 2 fixedly connected to the top of the workbench 1, a pneumatic clamping mechanism 3 provided on the top of the stainless steel plate 2 for pneumatic clamping of the frame, a cleaning mechanism 4 provided on the rear side of the top of the stainless steel plate 2 for cleaning waste residue, auxiliary support mechanisms 5 fixedly connected to the left and right sides of the top of the stainless steel plate 2 for auxiliary support, a transmission mechanism 6 provided on the front side of the interior of the workbench 1 for providing driving force, and a collection mechanism 9 provided on the right side of the interior of the workbench 1 for collecting waste residue;

[0042] The pneumatic clamping mechanism 3 includes multiple stainless steel support bases 301. The bottoms of the multiple stainless steel support bases 301 are fixedly connected to the top perimeter of the stainless steel plate 2. Positioning pins 302 are fixedly connected to the four corners of the outer surface of the top front stainless steel support base 301. The stainless steel support bases 301 and the positioning pins 302 enable quick positioning and installation of the tooling. A limiting groove 304 is formed on the top of the stainless steel support base 301. A rubber buffer pad 303 is fixedly connected to the top inner side of the limiting groove 304. A telescopic support rod 305 is fixedly connected to the top of the rubber buffer pad 303. 4. The inner rubber buffer pad 303 and the telescopic support rod 305 provide the mechanism with support and height fine adjustment functions. The adjustment ensures the precise position of the weld. The top of the telescopic support rod 305 is fixedly connected to the alloy clamping plate 306. The front side of the alloy clamping plate 306 is fixedly connected to the concave clamping block 307. The upper and lower ends of the front side of the concave clamping block 307 are fixedly connected to two pneumatic duckbill clamping plates 308. The alloy clamping plate 306, combined with the concave clamping block 307 and the pneumatic duckbill clamping plate 308, evenly fits the irregular parts of the frame, avoiding the indentation of traditional clamps. Furthermore, the two frames are clamped simultaneously by multiple sets of mechanisms to achieve parallel welding at two workstations.

[0043] Specifically, multiple stainless steel support bases 301 in the pneumatic clamping mechanism 3 are securely fixed around the top of the stainless steel plate 2, forming a solid load-bearing foundation. The positioning pins 302 at the four corners of the top front stainless steel support base 301 can be quickly aligned with the corresponding holes during tooling installation, achieving precise tooling positioning and greatly reducing installation and debugging time, thus improving assembly efficiency. Within the limiting groove 304 at the top of the stainless steel support base 301, rubber buffer pads 303 and telescopic support rods 305 form a buffer adjustment structure. When there are slight dimensional differences in the frame parts, the rubber buffer pads 303 absorb excess pressure due to their elasticity, preventing rigid collisions from damaging the parts. The telescopic support rods 305... The height can be finely adjusted according to actual needs to ensure that each component of the frame is in a precise position during welding. The alloy clamping plate 306 at the top of the telescopic support rod 305 is connected to the concave clamping block 307 on the front side, and is equipped with pneumatic duckbill clamping plates 308 at the upper and lower ends. The combination of the concave clamping block 307 and the pneumatic duckbill clamping plate 308 can closely fit the irregular parts of the frame. By utilizing the contour-following characteristics of the duckbill clamping plate, the clamping force is evenly distributed, eliminating the indentation problem caused by excessive local pressure in traditional clamps. At the same time, multiple sets of pneumatic clamping mechanisms 3 work together to stably clamp two frames at the same time, realizing parallel welding of dual stations, which greatly improves the efficiency of welding operations and powerfully promotes the welding of automobile frames towards high efficiency and high quality.

[0044] Reference Figure 1 , Figure 2 and Figure 6 The cleaning mechanism 4 includes a mounting plate 401. The bottom of the mounting plate 401 is fixedly connected to the top rear left end of the stainless steel plate 2. A reduction motor 402 is fixedly connected to the top of the mounting plate 401. A ball screw 403 is fixedly connected to the output end of the reduction motor 402. A limit block 407 is fixedly connected to the right end of the ball screw 403. A sliding hole plate 404 is slidably connected to the outside of the ball screw 403. A mounting protective frame 405 is fixedly connected to the front side of the sliding hole plate 404. A small fan 406 is fixedly connected to the inner side of the mounting protective frame 405. The reduction motor 402 drives the ball screw 403 to drive the sliding hole plate 404 to reciprocate, so that the small fan 406 inside the mounting protective frame 405 forms a dynamic blowing area.

[0045] Specifically, the mounting plate 401 in the cleaning mechanism 4 is securely fixed to the top rear left end of the stainless steel plate 2. The geared motor 402, equipped with it, outputs power at a stable and controllable speed, driving the connected ball screw 403 to rotate. The ball screw 403 converts the rotational motion of the motor 402 into the linear reciprocating motion of the sliding plate 404. The limit block 407 at the right end plays a precise stroke control role, preventing the sliding plate 404 from excessive displacement. The mounting protective bracket 405 on the front side of the sliding plate 404 not only provides a reliable protective shell for the small fan 406, but also ensures the stability of the installation position. As the sliding plate 404 moves along the ball screw 403... As the plate slides back and forth, the small fan 406 inside the protective frame 405 also moves accordingly, forming a dynamic blowing area above the welding station. During the welding process, the small fan 406 continuously operates to generate a strong airflow, which, together with the linear movement of the sliding plate 404, quickly covers the entire welding area and promptly blows away the generated welding slag, debris, and other impurities. Compared with the traditional static cleaning method, this dynamic blowing mode achieves automated and full-coverage slag cleaning, avoids the tediousness and omissions of manual cleaning, effectively prevents slag accumulation from affecting the positioning and welding quality of subsequent workpieces, ensures the continuity of the production line operation, and significantly improves production efficiency and cleaning effect.

[0046] Reference Figure 3 and Figure 5 The auxiliary support mechanism 5 includes two concave support plates 501. The bottom of the two concave support plates 501 is fixedly connected to the top left and right sides of the stainless steel plate 2 for auxiliary support. The bottom of the two concave support plates 501 is fixedly connected to a hydraulic rod 502 on an adjacent side inside. The output end of the two hydraulic rods 502 is fixedly connected to an electromagnetic clamping assembly 503. The two electromagnetic clamping assemblies 503 include sliding blocks 5031. The bottom of the two sliding blocks 5031 is fixedly connected to the output end of the two hydraulic rods 502 respectively. The adjacent side of the two sliding blocks 5031 is fixedly connected to an electromagnetic clamping mouth 5032. The transmission mechanism 6 includes an air pump 601. The bottom of the air pump 601 is fixedly connected to the front side inside the workbench 1. An air pipe groove 602 is opened at the top of the middle part of the front side of the workbench 1. The output end of the air pump 601 is fixedly connected to an air supply pipe 603 for outputting power. The front end of the air supply pipe 603 passes through the air pipe groove 602 and is fixedly connected to a control assembly 604.

[0047] Specifically, the two concave support plates 501 in the auxiliary support mechanism 5 are symmetrically fixed on both sides of the top of the stainless steel plate 2. Their unique concave structure enhances their load-bearing capacity and provides a regular installation space for internal components. The hydraulic rods 502 within the concave support plates 501 can precisely adjust their extension length according to the frame size and welding requirements, achieving flexible support for frames of different specifications. The electromagnetic clamping assembly 503 connected to the output end of the hydraulic rod 502 further strengthens the support stability. The sliding block 5031 is rigidly connected to the hydraulic rod 502, ensuring precise linear movement during extension and retraction. The magnetic clamp 5032 uses electromagnetic attraction to quickly adsorb metal parts of the frame, avoiding the wear and loosening problems caused by frequent opening and closing of traditional mechanical clamps. When the frame is placed in place, the hydraulic rod 502 extends, and the electromagnetic clamp 5032 is energized to generate a strong magnetic force, which firmly clamps the frame and effectively counteracts the thermal stress and deformation force generated during welding. The air pump 601 in the transmission mechanism 6 serves as the power output and is installed on the front side inside the workbench 1. The air supply pipes 603 are arranged in an orderly manner through the air pipe groove 602 to stably supply compressed air to the pneumatic clamping mechanism 3 components, which greatly improves the automation level and production cycle of the tooling system.

[0048] Reference Figure 1 and Figure 3 The control component 604 includes a control console 6041, the rear of which is fixedly connected to the front end of the gas supply pipe 603. Multiple control buttons 6042 are fixedly connected to the top of the control console 6041. Metal pads 7 are fixedly connected to the four corners of the top of the stainless steel plate 2. Metal rings 8 are fixedly connected to the top of the multiple metal pads 7. The collection mechanism 9 includes a handle collection box 902. The handle collection box 902 is slidably connected to the right side of the inside of the workbench 1. Cleaning grooves 901 are opened on the top right side of both the workbench 1 and the stainless steel plate 2, which can be used to collect waste residue.

[0049] Specifically, the control console 6041 in the control component 604 is directly connected to the air supply pipe 603, forming an efficient power transmission and control hub. The multiple control buttons 6042 arranged on the top are connected to various mechanisms through circuits. Operators can start or stop the pneumatic clamping function with one button, realizing precise control of the welding process and greatly improving the convenience of operation and production safety. The metal pads 7 and metal rings 8 at the four corners of the top of the stainless steel plate 2 provide additional hoisting and fixing convenience for the tooling. The metal pads 7 enhance the compressive strength of the connection parts, and the metal rings 8 can be used for hoisting and moving the tooling or in conjunction with external fixing devices to ensure the stability of the tooling in high-speed operation and strong vibration environment. The collection mechanism 9 focuses on the efficiency of waste slag treatment. The cleaning groove 901 opened on the right side of the workbench 1 and the stainless steel plate 2 allows the welding slag and debris blown out by the cleaning mechanism 4 to fall into the handle collection box 902 below. The handle collection box 902 adopts a drawer-type sliding structure, which can be easily pulled out by the handle for cleaning by the operator, avoiding the accumulation of welding slag from affecting the working environment and equipment operation, and ensuring the continuous and efficient operation of the welding production line.

[0050] Working principle: In the initial stage of operation, the operator places the frame to be welded in the working area of ​​the pneumatic clamping mechanism 3. At this time, multiple stainless steel support bases 301 distributed around the top of the stainless steel plate 2 and the positioning pins 302 at the four corners of the top front stainless steel support base 301 are quickly positioned and connected, shortening the tooling installation and debugging time. Subsequently, the rubber buffer pads 303 and telescopic support rods 305 in the limiting grooves 304 are adjusted according to the actual size of the frame. The rubber buffer pads 303 absorb excess pressure to avoid damage to the frame from rigid contact, while the telescopic support rods 305 are finely adjusted in height to ensure that the frame is in a precise welding position. The alloy clamping plate 306, concave clamping block 307, and pneumatic duckbill clamping plate 308 at the top of the telescopic support rods 305 are tightly fitted together. The pneumatic duckbill clamp 308 conforms to the irregular shape of the frame, evenly distributing the clamping force to prevent indentation problems caused by traditional clamps. Furthermore, the simultaneous operation of multiple pneumatic clamping mechanisms 3 achieves stable parallel clamping of two frames. The auxiliary support mechanism 5 is activated simultaneously. Two concave support plates 501, symmetrically distributed on the top left and right sides of the stainless steel plate 2, enhance their own load-bearing strength while providing stable installation space for internal components. The hydraulic rods 502 within the concave support plates 501 flexibly adjust their extension length according to the specific specifications and welding requirements of the frame, achieving adaptable support for frames of different sizes. When the hydraulic rods 502 extend to their full position, the electromagnetic clamping component 503 connected to the output end takes effect, and the sliding block 5031 ensures stable clamping. The electromagnetic clamp 5032 generates a strong magnetic force when energized, firmly adhering to the metal components of the frame, further enhancing support stability and effectively offsetting the thermal stress and deformation force generated during welding, ensuring the positional accuracy of the frame during welding. The transmission mechanism 6, with the air pump 601 installed on the front side inside the workbench 1, operates continuously and stably. Compressed air is precisely delivered to the pneumatic clamping mechanism 3 to the components requiring power through the orderly arranged air supply pipes 603 in the air pipe slots 602, providing sufficient power to the pneumatic components of the pneumatic duckbill chuck 308. The control component 604 is connected to the front end of the air supply pipe 603, forming an efficient power transmission and control hub. Multiple control buttons 6042 arranged on the top are closely connected to each mechanism through circuitry, allowing operators to start the machine with a single button. Alternatively, the pneumatic clamping function can be turned off. During welding operations, the cleaning mechanism 4 is activated simultaneously. The mounting plate 401 is fixed to the left rear end of the top of the stainless steel plate 2. The top geared motor 402 outputs power at a stable and controllable speed, driving the ball screw 403 to rotate, thereby converting the rotational motion into the linear reciprocating motion of the sliding plate 404. The limit block 407 at the right end precisely controls the movement stroke of the sliding plate 404 to prevent excessive displacement. The mounting protective frame 405 on the front side of the sliding plate 404 firmly protects the small fan 406 inside. As the sliding plate 404 slides back and forth, the small fan 406 forms a dynamic blowing area above the welding station. The strong airflow generated by its continuous operation, combined with the linear movement of the sliding plate 404, quickly covers the entire welding area.The generated welding slag, debris, and other impurities are promptly blown away and cleaned. The cleaned waste falls through the cleaning groove 901 on the top right side of the workbench 1 and stainless steel plate 2 into the handle collection box 902 of the collection mechanism 9. The drawer-type handle collection box 902 allows operators to easily pull it out for cleaning after it is full, effectively preventing welding slag accumulation from affecting the working environment and equipment operation, and ensuring the continuous and smooth operation of the welding production line. In addition, the metal pads 7 and metal rings 8 at the four corners of the top of the stainless steel plate 2 provide additional convenience for lifting and fixing the tooling. The metal pads 7 enhance the compressive strength of the connection parts, and the metal rings 8 facilitate the lifting and handling of the tooling and its coordination with external fixing devices, ensuring that the tooling remains stable even under high-speed operation and strong vibration environments, thereby improving the production efficiency and quality level of automotive frame welding.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for automobile frames, comprising a worktable (1), characterized in that: A stainless steel plate (2) is fixedly connected to the top of the workbench (1). A pneumatic clamping mechanism (3) is provided on the top of the stainless steel plate (2). The pneumatic clamping mechanism (3) is used to pneumatically clamp the frame. A cleaning mechanism (4) is provided on the rear side of the top of the stainless steel plate (2). The cleaning mechanism (4) is used to clean the waste residue. Auxiliary support mechanisms (5) are fixedly connected to the left and right sides of the top of the stainless steel plate (2). A transmission mechanism (6) is provided on the front side of the interior of the workbench (1). A collection mechanism (9) is provided on the right side of the interior of the workbench (1). The pneumatic clamping mechanism (3) includes multiple stainless steel support bases (301). The bottom of each of the multiple stainless steel support bases (301) is fixedly connected to the top of the stainless steel plate (2). Positioning pins (302) are fixedly connected to the four corners of the stainless steel support base (301) on the front side of the top. A limiting groove (304) is opened on the top of the stainless steel support base (301). A rubber buffer pad (303) is fixedly connected to the top of the inner side of the limiting groove (304). A telescopic support rod (305) is fixedly connected to the top of the rubber buffer pad (303). An alloy card plate (306) is fixedly connected to the top of the telescopic support rod (305). A concave card block (307) is fixedly connected to the front side of the alloy card plate (306). Two pneumatic duckbill card plates (308) are fixedly connected to the upper and lower ends of the front side of the concave card block (307).

2. The automotive frame welding fixture according to claim 1, characterized in that: The cleaning mechanism (4) includes a mounting plate (401), the bottom of which is fixedly connected to the left rear end of the top of the stainless steel plate (2). A geared motor (402) is fixedly connected to the top of the mounting plate (401). A ball screw (403) is fixedly connected to the output end of the geared motor (402). A limit block (407) is fixedly connected to the right end of the ball screw (403). A sliding hole plate (404) is slidably connected to the outside of the ball screw (403). A mounting guard (405) is fixedly connected to the front side of the sliding hole plate (404). A small fan (406) is fixedly connected to the inner side of the mounting guard (405).

3. The automotive frame welding fixture according to claim 2, characterized in that: The auxiliary support mechanism (5) includes two concave support plates (501). The bottom of the two concave support plates (501) is fixedly connected to the top left and right sides of the stainless steel plate (2). The bottom of the two concave support plates (501) are fixedly connected to hydraulic rods (502) on adjacent sides inside. The output ends of the two hydraulic rods (502) are fixedly connected to electromagnetic clamping components (503).

4. The automotive frame welding fixture according to claim 3, characterized in that: The two electromagnetic clamping assemblies (503) include sliding blocks (5031), the bottoms of the two sliding blocks (5031) are respectively fixedly connected to the output ends of two hydraulic rods (502), and electromagnetic clamps (5032) are fixedly connected to adjacent sides of the two sliding blocks (5031).

5. The automotive frame welding fixture according to claim 1, characterized in that: The transmission mechanism (6) includes an air pump (601). The bottom of the air pump (601) is fixedly connected to the front side of the inside of the workbench (1). An air pipe groove (602) is opened at the top of the middle part of the front side of the workbench (1). An air supply pipe (603) is fixedly connected to the output end of the air pump (601). The front end of the air supply pipe (603) passes through the air pipe groove (602) and is fixedly connected to a control component (604).

6. The automotive frame welding fixture according to claim 5, characterized in that: The control component (604) includes a console (6041), the rear of which is fixedly connected to the front end of the gas supply pipe (603), and a plurality of control buttons (6042) are fixedly connected to the top of the console (6041).

7. The automotive frame welding fixture according to claim 1, characterized in that: Metal pads (7) are fixedly connected to the four corners of the top of the stainless steel plate (2), and metal rings (8) are fixedly connected to the top of the multiple metal pads (7).

8. The automotive frame welding fixture according to claim 1, characterized in that: The collection mechanism (9) includes a handle collection box (902), and the handle collection box (902) is slidably connected to the inside right side of the workbench (1). A cleaning groove (901) is provided on the top right side of both the workbench (1) and the stainless steel plate (2).

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