Automobile frame welding device

Abstract

The invention relates to the technical field of frame welding, and discloses an automobile frame welding device which comprises a shell, a round shell is fixedly connected to the middle of the inner wall of the shell, rotating discs are rotatably connected to the two ends of the shell correspondingly, a welding table is fixedly connected to one side of the rotating disc at the front end, and side plates are arranged on the two sides of the welding table correspondingly; and a plurality of clamping plates are arranged on one side of the side plate. According to the automobile frame welding device, through cooperation of multiple mechanisms, the overturning mechanism drives the frame to be automatically overturned and welded, manual intervention is not needed, the machining period is shortened, positioning deviation is avoided, the frame is driven to be conveyed and transferred, the clamping mechanism is in linkage with overturning, automatic clamping and releasing do not need extra power, and it is guaranteed that clamping is accurate and stable; fixing, welding and transferring of the frame are integrated, production continuity is improved, and energy consumption and the failure rate are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of frame welding, in particular to an automobile frame welding device. BACKGROUND

[0002] The automobile frame is a core bearing component in the overall structure of an automobile, and bears important functions such as supporting the vehicle body, transmitting power and absorbing impact. The welding quality of the automobile frame directly determines the structural strength and driving safety of the vehicle. High-quality welding can ensure the stability and durability of the frame under various complex road conditions and extreme conditions, thereby effectively protecting the life safety of the driver and passengers. Therefore, the frame welding equipment occupies a crucial position in the automobile manufacturing field, and the performance of the frame welding equipment directly affects the overall quality and market competitiveness of the automobile product. Advanced welding equipment can not only improve the production efficiency, but also ensure the accuracy and consistency of the welding process, thereby providing a solid technical guarantee for automobile manufacturing enterprises.

[0003] In the prior art, most frame welding devices cannot realize integrated automatic overturning mechanism. After completing the welding of one side of the frame, the clamps need to be manually released, the frame needs to be manually overturned and clamped again for welding, the manual operation steps are complicated, usually a plurality of workers need to cooperate, which directly leads to a substantial extension of the processing cycle of a single frame. During the manual overturning process, it is difficult to ensure the consistency of the positioning of the frame each time, so that the alignment deviation of the welding joint is often high, which increases the risk of welding defects. In addition, the limiting mechanism needs to be operated twice to fix the frame each time, which not only increases the workload of the frame welding, but also makes it difficult to effectively guarantee the welding quality and efficiency. After the welding is completed, the frame stays on the welding platform, and then needs to be transferred to a transfer line by using external equipment such as a crane and a forklift. In this process, not only time and labor are wasted, but also the transfer difficulty of the frame is increased. Even if some equipment is equipped with a special transfer assembly, the transfer assembly and the welding clamping mechanism operate independently, cannot realize seamless connection of "welding completion and transfer", and seriously affect the production continuity. SUMMARY

[0004] The technical problem to be solved by the present application is that the welding process is disconnected, stable clamping and positioning are lacking, manual or additional equipment is needed for secondary transfer, and efficient, stable and integrated transfer of the frame after welding cannot be realized. Therefore, the present application provides an automobile frame welding device.

[0005] In order to achieve the above-mentioned purpose, the following technical scheme is adopted in the present application: an automobile frame welding device, comprising a shell, a circular shell is fixedly connected to the middle part of the inner wall of the shell, rotating discs are rotatably connected to both ends of the shell, a welding table is fixedly connected to one side of the front rotating disc, side plates are arranged on both sides of the welding table, a plurality of clamping plates are arranged on one side of the side plate, and a conveying belt is further included.

[0006] The inside of the shell is provided with a turnover mechanism, so that the frame clamped by the clamping plate is moved backward into the inside of the round shell and is turned over by 180 degrees, and then is moved linearly backward to the welding area to realize the welding of the frame from the other side, and then is moved backward again to deliver the frame to the top of the conveying belt;

[0007] A clamping mechanism is in transmission connection with the turnover mechanism, so that the clamping plate can be relatively close or far away when the side plate is moved to the front end and the rear end, so that the clamping plate can clamp the frame from both sides;

[0008] An adjusting mechanism is installed on one side of the clamping mechanism to adjust the initial distance between the left and right clamping plates, so that the clamping plate can clamp frames of different sizes;

[0009] A cleaning mechanism is in transmission connection with the turnover mechanism to clean the surface of the welding table when the side plate is moved backward, so as to avoid the influence of the residual debris on the surface of the welding table on the flatness of the frame placed next time after welding.

[0010] Preferably, the turnover mechanism comprises:

[0011] Two long plates, the surface of each long plate is slidably connected with two sleeve rods, one end of the sleeve rod is fixedly connected with the two sides of the side plate, one end of the sleeve rod close to the rear end is fixedly connected with a protruding column, the top and the bottom of the side of the side plate are fixedly connected with a baffle, the front end and the rear end of the bottom of the baffle are fixedly connected with a sliding table, one side of the rotating disc is provided with two motors, two lead screws are in common rotation connection between the two rotating discs, the output end of the motor is fixedly connected with the lead screw, the two sides of the shell are provided with a straight groove, the inner wall of the round shell is provided with two arc grooves, the two ends of the arc groove are in communication with the straight groove, the protruding column is slidably connected with the inner wall of the straight groove, and the front end and the rear end of the side plate are fixedly connected with a ring plate.

[0012] Preferably, the clamping mechanism comprises:

[0013] Two moving plates are installed on one side of the side plate, one side of the moving plate is fixedly connected with the clamping plate through the adjusting mechanism, the other side of the moving plate is fixedly connected with a sliding rod, the bottom of the sliding rod is fixedly connected with a sliding block, the middle part of the long plate is provided with a long groove, the two ends of the long groove are provided with an inclined groove, one end of the sliding rod is slidably connected with the inner wall of the long groove, the bottom of the baffle is provided with a limiting groove, and the surface of the sliding block is slidably connected with the inner wall of the limiting groove.

[0014] Preferably, the adjusting mechanism comprises:

[0015] The sleeve is fixedly connected with the clamping plate at one end, three rotating rods are rotatably connected to one side of the moving plate through rotating shafts, one end of the rotating rod is threadedly connected with the inner wall of the sleeve, and the top and bottom of the sleeve are fixedly connected with limiting rods.

[0016] Preferably, the cleaning mechanism comprises:

[0017] A cleaning brush is fixedly connected to the ring plate near the front end, and a collection box is installed at the front end of the shell.

[0018] Preferably, a control computer is installed on one side of the shell, and two welding mechanical arms are installed on the top of the circular shell.

[0019] Preferably, three square grooves are formed in the top of the baffle, the three square grooves are respectively arranged on the top of the three rotating rods, and one end of the rotating rod is a hexagonal mechanism.

[0020] Preferably, the horizontal span of the arc groove is one hundred and eighty degrees, and the left straight groove is communicated with the right straight groove through the arc groove.

[0021] The technical effects and advantages of the present application are as follows:

[0022] In the present application, when running, the frame parts are fixed first by front end welding, the motor drives the side plate to move the frame into the circular shell, the protruding column slides along the one hundred and eighty degree arc groove to drive the frame to complete one hundred and eighty degree overturning, then the frame moves into the rear end welding area with the side plate to complete secondary welding, and after welding is completed, the frame falls to the conveying belt for transfer, without manual intervention during welding, and the frame is directly turned over and welded through the mechanical structure, the frame completes the coherent movement of "initial welding position -> overturning area -> secondary welding position -> finished product transfer area", the operation steps are reduced and positioning deviation is avoided, and the frame realizes multi-station coherent movement, and the processing cycle is significantly shortened.

[0023] In the present application, the clamping mechanism is automatically clamped and placed through linkage with the overturning mechanism, without the need for an additional power source, and the clamping mechanism is automatically clamped in the initial position, stably fixed during welding, and automatically released before transfer, thereby reducing equipment complexity; and the two sides are synchronously retracted and expanded, so that the clamping force is uniform and positioning is accurate, and the frame is prevented from deviating.

[0024] In the present application, the adjusting mechanism can manually fine-tune the initial spacing of the clamping plate, and can adapt to frames of different sizes and profiles without the need for changing clamps, thereby reducing replacement costs, and the clamping plate can be independently adjusted by multiple rotating rods to fit the concave and convex surfaces of the frame, thereby enhancing the stability of complex frames, and the clamping plate can accurately clamp the frame of the adapted size under linkage of the clamping mechanism after adjustment.

[0025] In the present application, the cleaning mechanism operates synchronously with the turnover mechanism, automatically cleaning the welding table when the side plate moves backward, without occupying additional time, removing welding slag and dust in real time, avoiding uneven placement of subsequent frame, and impurities falling into the detachable collection box for easy maintenance, ensuring that the welding table is always flat and clean, and will not affect the stability of the subsequent frame parts due to long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view structural schematic diagram of the present application;

[0027] Figure 2 It is a vertical cross-section structural section view of the present application;

[0028] Figure 3 It is a horizontal cross-section structural section view of the present application;

[0029] Figure 4 It is a schematic diagram of the straight groove and arc groove connection structure of the present application;

[0030] Figure 5 It is a section view of the internal structure of the shell of the present application;

[0031] Figure 6 It is an exploded view of the turnover mechanism of the present application;

[0032] Figure 7 It is a bottom view of the turnover mechanism of the present application;

[0033] Figure 8 It is a schematic diagram of the clamping mechanism of the present application;

[0034] Figure 9 It is an exploded view of the connection structure of the slide rod and the rotating rod of the present application.

[0035] Legend: 1, shell; 2, round shell; 3, rotating disc; 4, welding table; 5, side plate; 6, clamping plate; 7, conveying belt; 8, long plate; 9, sleeve rod; 10, protruding column; 11, baffle; 12, sliding table; 13, motor; 14, screw rod; 15, straight groove; 16, arc groove; 17, ring plate; 18, moving plate; 19, slide rod; 20, slide block; 21, long groove; 22, inclined groove; 23, limiting groove; 24, sleeve; 25, rotating rod; 26, limiting rod; 27, cleaning brush; 28, collection box; 29, control computer; 30, welding robot; 31, square groove. DETAILED DESCRIPTION

[0036] The present application will now be further described in detail with reference to the accompanying drawings and preferred embodiments, which are all simplified schematic diagrams, and only illustrate the basic structure of the present application in a schematic manner, and therefore only show the components related to the present application.

[0037] REFERENCE Figure 1 -Figure 9 As shown, the present application provides a technical solution: a kind of automobile frame welding device, including shell 1, the middle part of the inner wall of shell 1 is fixedly connected with round shell 2, the both ends of shell 1 are rotatably connected with rotary table 3, the side of front rotary table 3 is fixedly connected with welding table 4, the both sides of welding table 4 are provided with side plate 5, the side of side plate 5 is provided with several clamping plates 6, further including conveying belt 7;

[0038] The inside of shell 1 is provided with turnover mechanism, clamping mechanism is drivingly connected with turnover mechanism, adjusting mechanism is installed on the side of clamping mechanism, cleaning mechanism is drivingly connected with turnover mechanism.

[0039] Referring to Figure 1 Figure 8 As shown in the embodiment: turnover mechanism includes:

[0040] Two long plates 8, the surface of each long plate 8 is slidingly connected with two sleeve rods 9, one end of sleeve rod 9 is fixedly connected with the both sides of side plate 5, one end of sleeve rod 9 close to rear end is fixedly connected with convex column 10, the top and bottom of the side of side plate 5 are fixedly connected with baffle 11, the front end and rear end of the bottom of baffle 11 are fixedly connected with sliding table 12, one side of rotary table 3 is installed with two motors 13, two rotary tables 3 are rotatably connected with two lead screws 14, the output end of motor 13 is fixedly connected with lead screw 14, the both sides of shell 1 are provided with straight slot 15, the inner wall of round shell 2 is provided with two arc grooves 16, the both ends of arc groove 16 are respectively communicated with straight slot 15, convex column 10 is slidingly connected with the inner wall of straight slot 15, the front end and rear end of side plate 5 are fixedly connected with ring plate 17, the horizontal span of arc groove 16 is one hundred and eighty degrees, left straight slot 15 is communicated with right straight slot 15 through arc groove 16, after the staff places frame parts on the top of welding table 4 and makes frame parts butt joint neatly, clamping mechanism starts to run, clamping plate 6 clamps and fixes the both sides of frame parts from both sides, at this time, welding mechanical arm 30 starts, and the frame parts are welded according to preset program;

[0041] When the welding mechanical arm 30 at front end completes welding, motor 13 starts to run, and drives lead screw 14 to rotate, which makes sliding table 12 installed on the surface of lead screw 14 advance and retreat respectively along the rotating direction of lead screw 14, when welding mechanical arm 30 completes welding on the top surface of frame part, motor 13 starts, and makes sliding table 12 and baffle 11 move backward, and then makes side plate 5 move backward, when side plate 5 moves backward, convex column 10 is sleeved on the surface of long plate 8 to slide and translate, at this time, clamping plate 6 is in clamping state of frame part, and frame is fixed between two side plates 5, when side plate 5 moves backward, it can drive frame part to move backward synchronously, when sleeve rod 9 moves backward, convex column 10 will slide backward along the inner wall of straight slot 15.

[0042] ​When the side plate 5 is completely moved backward to the rear end of the welding table 4, the side plate 5 is also completely entered into the inside of the round shell 2, at this time, the clamping plate 6 has clamped and moved the frame backward from the surface of the welding table 4 to the inside of the round shell 2, and the frame is in a suspended state, at this time, the protruding column 10 will slide out from the inside of the straight slot 15 at the front end and be ready to enter the inside of the arc slot 16, then the protruding columns 10 on both sides will slide along the two arc slots 16, since the arc slots 16 are arc-shaped and have a span of one hundred and eighty degrees, the protruding columns 10 originally on both sides will be turned one hundred and eighty degrees around the center axis of the round shell 2 when sliding along the arc slots 16, which makes the top of the frame part clamped by the clamping plate 6 turn to the bottom, so as to change the welding processing surface of the frame part;

[0043] Then, the protruding column 10 slides out from the inside of the arc slot 16, and the protruding column 10 will move into the inside of the straight slot 15 on the other side at the rear end to make the side plate 5 move linearly in a horizontal state, in this process, the sleeve rod 9 always slides along the surface of the long plate 8, when the sleeve rod 9 passes through the protruding column 10 and the arc slot 16 deflection, it will drive the long plate 8 to deflect synchronously, so that the rotating disc 3 rotates one hundred and eighty degrees, at this time, the frame part fixed by the clamping plate 6 has completed a one hundred and eighty degree deflection and retreated into the welding area of the welding mechanical arm 30 at the rear end, then the motor 13 stops running to stop the frame part on one side which has completed welding in the secondary welding area, then the welding mechanical arm 30 operates to weld the frame part after deflection, so as to weld the gap which is not welded on the bottom welding shielding surface in the first welding;

[0044] When the welding mechanical arm 30 completes the welding operation, the frame parts are all fixedly connected together to complete the processing, then the motor 13 operates again to move the side plate 5 and the clamping plate 6 backward again, when the side plate 5 is completely moved to the upper side of the conveying belt 7, the clamping plate 6 automatically releases the clamping and fixing of the frame parts, and the welded frame parts fall to the surface of the conveying belt 7, with the running of the conveying belt 7, the frame parts are conveyed backward to realize the transfer of the frame parts after welding;

[0045] Finally, the motor 13 reverses operation, the side plate 5 and the clamp plate 6 move backward, and reset and flip when entering the inside of the round shell 2, until the protruding column 10 moves to the initial position, ready for welding of subsequent frame parts, in the process, the combination of the side plate 5 and the clamp plate 6 moves smoothly along the predetermined trajectory, ensuring the accuracy of the reset and flip, with the reverse drive of the motor 13, until the side plate 5 and the clamp plate 6 accurately return to their starting positions at the beginning of the welding cycle, at this time, the protruding column 10 also returns to the initial position, fully preparing for the loading and welding of the next frame part, the operation of the whole device is smooth and efficient, reflecting advanced mechanical design and precise process control, without welding the top surface of the frame part and then releasing the clamp to flip and replace the welding surface for secondary clamping and fixing the bottom surface for welding, reducing the operation steps during welding of the frame part, making the face welding and transfer after frame welding more efficient, ensuring the high quality and stability of the automobile frame welding.

[0046] Referring to Figure 6 - Figure 9 In the embodiment shown, the clamping mechanism comprises:

[0047] The moving plate 18 is provided in two numbers and is installed on one side of the side plate 5, one side of the moving plate 18 is fixedly connected with the clamp plate 6 through the adjusting mechanism, the other side of the moving plate 18 is fixedly connected with the sliding rod 19, the bottom of the sliding rod 19 is fixedly connected with the sliding block 20, the middle part of the long plate 8 is provided with a long slot 21, both ends of the long slot 21 are provided with inclined slots 22, one end of the sliding rod 19 is slidingly connected with the inner wall of the long slot 21, the bottom of the baffle 11 is provided with a limiting slot 23, the surface of the sliding block 20 is slidingly connected with the inner wall of the limiting slot 23, in the initial state, the protruding column 10 will be at the front end of the straight slot 15, at this time, the worker places the frame part on the surface of the welding table 4, then starts the motor 13 to make the protruding column 10 move backward, at this time, the protruding column 10 and the sleeve rod 9 move backward to make the moving plate 18 and the sliding rod 19 between the two baffles 11 move backward synchronously, since the sliding rod 19 slides in the long slot 21 and the inclined slot 22, at this time, the sliding rod 19 is placed at the outermost end of the inclined slot 22, as the sliding rod 19 is driven to move backward, the sliding rod 19 gradually slides into the long slot 21 along the inclined slot 22, the inclined slot 22 guides the sliding rod 19 into the long slot 21 to realize the synchronous inward movement of the two sliding rods 19, at this time, the sliding block 20 also slides inwardly with the inner wall of the limiting slot 23, thereby driving the clamp plate 6 and the adjusting mechanism to move downward synchronously, through the same setting on both sides, the synchronous inward movement of the two clamp plates 6 is realized, which clamps and fixes the frame part on both sides;

[0048] After the slide rod 19 just slides into the front end of the long groove 21 from the chute 22, the motor 13 will stop running, the turnover mechanism will stop here, and the first welding of the vehicle frame is carried out by the welding mechanical arm 30. At this time, the vehicle frame parts have been clamped and fixed on the top of the welding table 4 by the clamping plate 6. After the top of the vehicle frame parts is welded, the motor 13 will run again to drive the turnover mechanism to move backward. With the slide rod 19 following the deflection mechanism to move backward again and stay for a second time for turnover welding, the third backward movement will make the slide rod 19 move along the long groove 21 into the other end of the chute 22. At this time, the vehicle frame parts have completed the turnover and the welding of the front and back surfaces respectively, and the overall welding of the vehicle frame parts is completed.

[0049] With the slide rod 19 entering the rear chute 22, the slide rod 19 will expand outward, thereby driving the clamping plate 6 and the adjusting assembly to expand outward synchronously and release the clamping and fixing of the vehicle frame parts. This makes the vehicle frame parts fall down from between the two side plates 5 to the top of the conveyor belt 7 for transfer to complete a welding process. Then it will follow the reset of the turnover mechanism to reset to the initial position and be in the expanded state, thereby realizing the synchronous operation of clamping and turnover during welding, so that the device can automatically release the vehicle frame parts after clamping and welding. The whole process does not need manual turnover or movement of the vehicle frame parts, greatly improving the welding efficiency and automation degree.

[0050] Referring to Figure 8 With Figure 9 In the embodiment, the adjusting mechanism comprises:

[0051] The sleeve 24 is fixedly connected to one end of the clamping plate 6. One side of the moving plate 18 is rotatably connected to three rotating rods 25 through a rotating shaft. One end of the rotating rod 25 is threadedly connected to the inner wall of the sleeve 24. The top and bottom of the sleeve 24 are fixedly connected to limiting rods 26. The sleeve 24 and the limiting rods 26 pass through the inside of the side plate 5. Three square grooves 31 are formed in the top of the baffle 11. The three square grooves 31 are respectively arranged on the top of the three rotating rods 25. One end of the rotating rod 25 is a hexagonal mechanism. Through the square grooves 31 formed in the top of the baffle 11, the hands of the worker can extend between the two baffles 11 and touch the rotating rod 25. The hexagonal design of one end of the rotating rod 25 is more convenient for the worker to rotate the rotating rod 25. When the worker manually rotates the rotating rod 25, the rotating rod 25 is threadedly connected to the sleeve 24, and the sleeve 24 and the limiting rods 26 cannot rotate due to the limitation of sliding in the inside of the side plate 5. When the rotating rod 25 rotates, the distance between the rotating rod 25 and the sleeve 24 can be changed, thereby adjusting the length of the rotating rod 25 and the sleeve 24, changing the initial position of the clamping plate 6, adjusting the positions of multiple clamping plates 6, changing the clamping position after the clamping plate 6 moves inward, and adapting to different concave and convex surfaces on both sides of the vehicle frame parts to achieve the purpose of clamping and fixing vehicle frame parts of different sizes and shapes.

[0052] This adjustment method is not only flexible and convenient, but also greatly enhances the applicability of the device. Through subtle adjustment, the clamping plate 6 can closely fit the profile of the frame parts, whether it is a flat area or a concave and convex part, and can achieve stable clamping. In this way, whether it is a large SUV frame or a compact car frame, the welding device can easily cope without the need to change different clamps or make complex setting adjustments, achieving flexible clamping and fixing of frame parts of different sizes and shapes, greatly improving the efficiency and quality of welding operations.

[0053] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 , in the embodiment: the cleaning mechanism comprises:

[0054] The cleaning brush 27 is fixedly connected to the ring plate 17 near the front end, and the front end of the shell 1 is provided with a collection box 28. When the turnover mechanism moves backward, the ring plate 17 will drive the cleaning brush 27 to move backward synchronously. Since the bristles of the cleaning brush 27 are relatively long, the bottom of the cleaning brush 27 will always be in contact with the surface of the welding table 4. When the cleaning brush 27 is driven by the ring plate 17 to move backward along the surface of the welding table 4, the cleaning brush 27 will clean the surface of the welding table 4 from front to back, thereby removing the dust and slag generated during the first welding from the surface of the welding table 4. The impurities falling off during cleaning will fall into the collection box 28 at the bottom for centralized collection, so as to ensure the cleanliness of the welding table 4 when receiving frame parts for welding each time, avoid the influence of the slag after welding on the flatness of the welding table 4, prevent the frame parts from being placed unstably due to these factors when placed again, and cause the welding gap to increase. In addition, the design of the collection box 28 also takes into account the need for convenient cleaning. The bottom is designed to be detachable, which can be taken out by pulling forward. When a certain amount of slag and dust is collected, the operator can easily disassemble it for cleaning, and then reinstall it. This not only ensures the continuous and efficient operation of the equipment, but also greatly reduces the maintenance cost.

[0055] Referring to Figure 1 , Figure 2 and Figure 5As shown, in the present embodiment: one side of the shell 1 is mounted with a control computer 29, and the top of the round shell 2 is mounted with two welding mechanical arms 30; the running state of the motor 13 and the welding mechanical arm 30 is detected and preprogrammed in real time by the control computer 29; once the running state of the motor 13 or the welding mechanical arm 30 is detected to be abnormal, such as slowing down, jamming or stopping working, the control computer 29 will immediately send a signal to trigger a warning light to prompt manual intervention, and stop the running of the motor 13 of the turnover mechanism and the control computer 29; the welding mechanical arm 30 for welding adopts an intelligent multi-axis mechanical arm, which has high flexibility and accuracy, can automatically adjust the angle and position according to the pre-set welding program, ensures that each welding can achieve the best effect, and improves the production efficiency and product quality.

[0056] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features thereof, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

Claims

1. An automobile frame welding device, comprising a housing (1), characterized in that: A round shell (2) is fixedly connected to the middle of the inner wall of the shell (1). Turntables (3) are rotatably connected to both ends of the shell (1). A welding table (4) is fixedly connected to one side of the front end of the turntable (3). Side plates (5) are provided on both sides of the welding table (4). Several clamping plates (6) are provided on one side of the side plate (5). A conveyor belt (7) is also included. The housing (1) is equipped with a flipping mechanism so that the frame held by the clamp (6) moves backward into the round shell (2) and flips 180 degrees. After flipping, it moves straight backward to the welding area and moves backward again after welding is completed, so as to transport the frame to the top of the conveyor belt (7). The clamping mechanism is connected to the flipping mechanism so that when the side plate (5) moves to the front end and the rear end, the clamping plate (6) moves closer or further away from each other. An adjustment mechanism is installed on one side of the clamping mechanism to adjust the initial distance between the left and right clamping plates (6); A cleaning mechanism is connected to a flipping mechanism to clean the surface of the welding table (4) when the side plate (5) moves backward.

2. The automobile frame welding device according to claim 1, characterized in that: The flipping mechanism includes: Two long plates (8), each long plate (8) has two sleeve rods (9) slidably connected to its surface. One end of each sleeve rod (9) is fixedly connected to both sides of a side plate (5). A protruding column (10) is fixedly connected to one end of the sleeve rod (9) near the rear end. Baffles (11) are fixedly connected to the top and bottom of the side of the side plate (5). A slide table (12) is fixedly connected to the front and rear ends of the bottom of the baffle (11). Two motors (13) are installed on one side of the turntable (3). The turntables (3) are connected by two lead screws (14) for rotation. The output end of the motor (13) is fixedly connected to the lead screws (14). Straight grooves (15) are provided on both sides of the housing (1). Two arc grooves (16) are provided on the inner wall of the round shell (2). The two ends of the arc grooves (16) are connected to the straight grooves (15) respectively. The protruding column (10) is slidably connected to the inner wall of the straight groove (15). The front end and rear end of the side plate (5) are fixedly connected to the ring plate (17).

3. The automobile frame welding device according to claim 1, characterized in that: The clamping mechanism includes: There are two movable plates (18), which are respectively installed on one side of the side plate (5). One side of the movable plate (18) is fixedly connected to the clamp (6) through the adjustment mechanism. The other side of the movable plate (18) is fixedly connected to the slide rod (19). The bottom of the slide rod (19) is fixedly connected to the slider (20). The middle part of the long plate (8) is provided with a long groove (21). Both ends of the long groove (21) are provided with inclined grooves (22). One end of the slide rod (19) is slidably connected to the inner wall of the long groove (21). The bottom of the baffle (11) is provided with a limiting groove (23). The surface of the slider (20) is slidably connected to the inner wall of the limiting groove (23).

4. The automobile frame welding device according to claim 1, characterized in that: The adjustment mechanism includes: Sleeve (24), one end of which is fixedly connected to clamp plate (6), and three rotating rods (25) are rotatably connected to one side of the movable plate (18) via a rotating shaft. One end of the rotating rod (25) is threadedly connected to the inner wall of sleeve (24). Limiting rods (26) are fixedly connected to the top and bottom of sleeve (24). Sleeve (24) and limiting rods (26) pass through the interior of side plate (5).

5. The automobile frame welding device according to claim 1, characterized in that: The cleaning facility includes: A cleaning brush (27) is fixedly connected to the ring plate (17) near the front end, and a collection box (28) is installed at the bottom of the front end of the housing (1).

6. The automobile frame welding device according to claim 1, characterized in that: A control computer (29) is installed on one side of the housing (1), and two welding robotic arms (30) are installed on the top of the round shell (2).

7. The automobile frame welding device according to claim 1, characterized in that: The top of the baffle (11) is provided with three square slots (31), and the three square slots (31) are respectively placed on the top of the three rotating rods (25). One end of the rotating rod (25) is a hexagonal mechanism.

8. The automobile frame welding device according to claim 1, characterized in that: The horizontal span of the arc groove (16) is 180 degrees, and the straight groove (15) on the left side is connected to the straight groove (15) on the right side through the arc groove (16).

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