A paint booth turntable with an automatic locking mechanism and method of use

Abstract

The present application belongs to the technical field of turnover frame, especially an automobile paint spraying turnover frame with automatic locking mechanism and its using method. In view of the problems that the clamping part cannot be sprayed, the clamping effect is poor, the positioning is inconvenient when placing the door plate, and the door plate is easy to fall during clamping operation in the existing turnover frame, the following scheme is proposed. Two supporting frames are provided, a first rotating shaft is rotatably arranged between the two supporting frames, three positioning rods for supporting the door body are fixed on one side of the first rotating shaft, a reducer and a motor are fixed on one side of one of the supporting frames, the setting of the pedal and the transmission part enables the staff to easily realize the rising of the supporting strip and the unlocking of the clamping mechanism by stepping, the operation is simple, the locking mechanism ensures the stability of the door body during the turnover process, effectively prevents the falling, and the supporting strip can be rotatably arranged to avoid the direct contact between the remaining paint and the door body.

Description

Technical Field

[0001] The present invention relates to the technical field of rollover racks, and in particular to an automobile spray painting rollover rack with an automatic locking mechanism and a use method thereof. Background Art

[0002] After welding and stamping, car doors need to enter the painting process. A paint rack is a common tool used in the painting process, allowing the door to be hung or fixed on the rack for spraying. However, due to the large contact area between the fixings and the door, some areas cannot be fully sprayed.

[0003] A search revealed a utility model with publication number CN221360700U, which discloses a paint spraying tilting stand. However, this tilting stand has the following drawbacks: During use, the door panel is secured by a clamping plate and a stop block. This fixation method prevents spraying at the clamping area and results in poor clamping performance. Furthermore, the door panel is difficult to position and is prone to falling during the clamping process. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art, such as the fact that the clamping parts cannot be sprayed during the fixing process, the clamping effect is poor, it is inconvenient to position the door panel during placement, and it is easy to fall during the clamping operation. A car paint flip rack with an automatic locking mechanism and a method of using the same are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A car paint turning stand with an automatic locking mechanism includes two support frames, a first rotating shaft is rotatably provided between the two support frames, three positioning rods for supporting a door body are fixedly provided on one side of the first rotating shaft, a power source is used to drive the first rotating shaft to rotate, and the door body is turned by the rotation of the first rotating shaft, a support rod is fixedly provided on the top of the positioning rod, and a support seat is fixedly provided on the top of the support rod to abut against the door body flange;

[0007] Two fixing seats, with a support bar for supporting the door body provided between the two fixing seats;

[0008] The clamping mechanism is arranged in the positioning rod and cooperates with the flange in the door body to fix the door panel on the positioning rod;

[0009] A pedal is rotatably mounted on one side of one of the support frames, the pedal being connected to the support bar and the clamping mechanism via a transmission member, and utilizing the pedaling force of the foot to drive the support bar to move upward to support the door panel while releasing the clamping mechanism from fixing the door panel;

[0010] The locking mechanism is arranged on the first rotating shaft and used for locking the clamping mechanism to avoid falling during the overturning.

[0011] In a possible design, two fixing bases are respectively arranged at the top of the support frames, and a rectangular slot is arranged on the side of each of the two fixing bases close to each other, a sliding block is slidably arranged in the rectangular slot, a third rotating shaft is rotatably arranged between the two support frames, a pedal is fixed to one end of the third rotating shaft, a second rotating shaft is rotatably arranged between the two support frames, the outer wall of the third rotating shaft and the outer wall of the second rotating shaft are both fixedly sleeved with first gears that are engaged with each other, and the sliding block is connected with the second rotating shaft through a connecting piece.

[0012] In a possible design, the connecting piece comprises a rotating base fixed to one side of the sliding block, a second sliding rod is rotatably arranged on one side of the rotating base, a second sleeve rod is slidably sleeved on the outer wall of the second sliding rod, and the other end of the second sleeve rod is fixed to the outer wall of the second rotating shaft.

[0013] In a possible design, a guide rod is fixed in the rectangular slot, a tension spring is sleeved on the outer wall of the guide rod, the sliding block is slidably sleeved on the guide rod, and the two ends of the tension spring are fixedly connected with the bottom wall of the rectangular slot and the bottom of the sliding block, so as to drive the sliding block to move downward and reset.

[0014] In a possible design, a connecting rod is fixed between the two sliding blocks, the support strip is rotatably sleeved on the connecting rod, the outer wall of the connecting rod is rotatably sleeved with two second gears, the two second gears are respectively fixed to the two ends of the support strip, and one side of the fixing base is fixedly provided with a rack engaged with the second gears, so as to drive the support strip to overturn and effectively reduce the adhesion of paint on the bottom surface of the support strip.

[0015] In a possible design, the clamping mechanism comprises a second sliding ring slidably sleeved on the outer wall of the positioning rod, a first rectangular opening is arranged on the outer wall of the positioning rod, a first rectangular block is slidably arranged in the first rectangular opening, the first rectangular block is fixed in the second sliding ring, a limiting rod used in cooperation with the door body flange is fixed to the top of the second sliding ring, a pull rope is arranged in the positioning rod, one end of the pull rope is fixedly connected with the first rectangular block, and the other end of the pull rope is fixedly wound on the outer wall of the second rotating shaft.

[0016] In a possible design, the outer wall of the first rotating shaft is sleeved with an adjusting ring corresponding to the positioning rod, the outer wall of the first rotating shaft is provided with a sliding groove, the sliding groove is slidably provided with a sliding block corresponding to the adjusting ring, the sliding block is fixedly arranged in the adjusting ring, the top of the adjusting ring is fixedly provided with a fixed block, the positioning rod penetrates through one side of the fixed block, and the adjusting ring and the sliding block are threadedly provided with the same bolt on one side.

[0017] In a possible design, the locking mechanism comprises a first sleeve rod fixedly arranged on one side of the first rotating shaft, the outer wall of the first sleeve rod is slidably sleeved with a first sliding ring corresponding to the adjusting ring, the outer wall of the first sleeve rod is slidably sleeved with a limiting ring corresponding to the fixed block, the pull rope is located between the corresponding first sliding ring and the limiting ring, the limiting ring is fixedly connected with the corresponding adjusting ring, and the outer wall of the first rotating shaft is fixedly provided with an electric push rod, which is used to push the first sliding ring to the limiting ring to clamp and fix the pull rope.

[0018] In a possible design, the power source is a reducer and a motor fixedly arranged on one side of one of the support frames, the output end of the reducer is fixedly connected with the first rotating shaft, the output end of the motor is fixedly connected with the input end of the reducer, the first sleeve rod is slidably provided with a first sliding rod, the outer wall of the first sleeve rod is provided with a second rectangular opening, the second rectangular opening is slidably provided with a second rectangular block, the second rectangular block is fixedly arranged between the corresponding first sliding ring and the first sliding rod, the output end of the electric push rod is fixedly connected with the first sliding rod, and the hydraulic cylinder is detachably and rotatably arranged between the support frame and the pedal.

[0019] A use method of an automobile paint spraying turnover frame with an automatic locking mechanism, comprising the following steps:

[0020] S1, first, the foot steps on the pedal to drive the support strip to move upwards, and the door plate is placed on the support strip and pushed inward until the positioning rod abuts against the door plate;

[0021] S2, then the foot is loosened, at this time, the support strip can move downwards under the action of the two guide rods and drive the limiting rod to abut against the turned edge in the door body, and the door body is fixed on the three positioning rods by using the pulling force;

[0022] S3, secondly, the electric push rod is started to drive the first sliding rod to move, and the first sliding ring and the limiting ring are used to clamp and fix the pull rope;

[0023] S4, finally, the motor is started to drive the reducer to rotate, drive the first rotating shaft to rotate, and thus drive the door body to turn over.

[0024] Beneficial effects: In the present invention, the automobile spray painting turning stand with an automatic locking mechanism, through the provision of a pedal, allows the operator to simultaneously achieve the raising of the support bar and the unlocking of the clamping mechanism by a simple stepping action, further simplifying the operation process and improving convenience. In addition, during the loosening process, the support bar can automatically descend and drive the clamping mechanism to pre-fix the door panel.

[0025] In the present invention, the automobile paint reversing stand with an automatic locking mechanism can fix the pull rope through the setting of the locking mechanism, ensuring that the door body will not fall off during the reversing process, effectively preventing the occurrence of accidents, and the clamping part of the clamping component is clamped at the flange inside the door body, greatly reducing the contact area with the outside of the door body;

[0026] In the present invention, the automobile painting turning stand with an automatic locking mechanism allows the position of the positioning rod to be adjusted as needed by setting an adjustment ring and a slider, thereby adapting to doors of the same size and having different positions of the inner holes of the door bodies. This not only improves the versatility of the turning stand, but also enables it to meet more diverse painting needs.

[0027] In the present invention, the automobile paint spraying flip stand with an automatic locking mechanism flips during the lifting process by means of a flipping arrangement of the support bars, thereby reducing the amount of paint contacting the door body on the contact surface after the lifting, thereby reducing paint contamination on the door body.

[0028] In the present invention, through the setting of pedals and transmission parts, the staff can easily raise the support bar and unlock the clamping mechanism by stepping on it. The operation is simple. The locking mechanism ensures the stability of the door body during the flipping process and effectively prevents it from falling off. At the same time, the flippable setting of the support bar avoids direct contact between the remaining paint and the door body, reducing paint pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of a car paint reversing stand with an automatic locking mechanism proposed by the present invention when the pedal is not depressed;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of a car paint reversing stand with an automatic locking mechanism proposed by the present invention after the pedal is stepped on;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the automobile spray painting flip stand with an automatic locking mechanism proposed by the present invention after the pedal is stepped on from another perspective;

[0032] Figure 4 This is a schematic diagram of the installation structure of the sliding ring and the positioning ring of the automobile paint turning frame with an automatic locking mechanism proposed by the present invention;

[0033] Figure 5 The adjusting ring and rotating shaft mounting structure of the automobile paint spraying turnover frame with the automatic locking mechanism is shown in the schematic view.

[0034] Figure 6 The positioning rod and door plate cooperation structure of the automobile paint spraying turnover frame with the automatic locking mechanism after the pedal is stepped on is shown in the schematic view.

[0035] Figure 7 The connecting rod mounting structure of the automobile paint spraying turnover frame with the automatic locking mechanism after the pedal is stepped on is shown in the schematic view.

[0036] Figure 8 The stretched spring structure of the automobile paint spraying turnover frame with the automatic locking mechanism after the pedal is stepped on is shown in the schematic view.

[0037] Figure 9 The enlarged structure of the A part in the schematic view. Figure 4

[0038] Figure 10 The schematic view of the automobile paint spraying turnover frame with the automatic locking mechanism when the hydraulic cylinder is mounted.

[0039] In the figure: 1, support frame; 2, first rotating shaft; 3, speed reducer; 4, motor; 5, fixed seat; 6, support strip; 7, pedal; 8, positioning rod; 9, second rotating shaft; 10, third rotating shaft; 11, fixed block; 12, first sleeve rod; 13, limiting ring; 14, pull rope; 15, first sliding rod; 16, electric push rod; 17, first sliding ring; 18, adjusting ring; 19, sliding groove; 20, sliding block; 21, bolt; 22, support rod; 23, support seat; 24, second sliding ring; 25, first rectangular port; 26, first rectangular block; 27, limiting rod; 28, second rectangular port; 29, second rectangular block; 30, first gear; 31, second sleeve rod; 32, second sliding rod; 34, rectangular groove; 35, sliding block; 36, rotating seat; 37, connecting rod; 38, guide rod; 39, tension spring; 40, second gear; 41, rack; 42, hydraulic cylinder. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0041] Embodiment 1: refer to Figures 1-9 ​The utility model provides an automobile paint spraying turnover frame with automatic locking mechanism, which is applied in the field of turnover frame, and comprises two support frames 1, a first rotating shaft 2 is rotatably arranged between the two support frames 1, three positioning rods 8 are fixedly arranged on one side of the first rotating shaft 2, and the positioning rods 8 are used for supporting the door body. In particular, a reducer 3 and a motor 4 (power source) are fixedly arranged on one side of one of the support frames 1. The output end of the reducer 3 is fixedly connected with the first rotating shaft 2, and the output end of the motor 4 is fixedly connected with the input end of the reducer 3. Such arrangement enables the motor 4 to drive the reducer 3 and then the first rotating shaft 2 to rotate when the motor 4 is started, so that the turnover of the door body is realized, and the reducer 3 adopts a worm gear reducer, which has a self-locking function when the machine is stopped.

[0042] Support rods 22 are fixedly arranged on the top of the positioning rods 8, and support seats 23 are fixedly arranged on the top of the support rods 22, which abut against the turned-up edges of the door body to provide additional support and positioning.

[0043] In addition, two fixed seats 5 are fixedly arranged on the top of the support frames 1. Rectangular grooves 34 are formed on the mutually close sides of the two fixed seats 5, and sliding blocks 35 are slidably arranged in the rectangular grooves 34. A support strip 6 for supporting the door body is arranged between the two sliding blocks 35.

[0044] In order to fix the door body, clamping mechanisms are arranged in the positioning rods 8 and used in cooperation with the turned-up edges in the door body, so that the door plate can be fixed on the positioning rods 8.

[0045] In order to provide a convenient operation mode, a pedal 7 is further included, which is rotatably arranged on one side of one of the support frames 1. The pedal 7 is connected with the support strip 6 and the clamping mechanisms through transmission members. When a worker steps on the pedal 7, the stepping force will drive the transmission members to work, so that the support strip 6 moves upward to support the door plate, and the clamping mechanisms are released from the fixation of the door plate. In order to save labor, a hydraulic cylinder 42 (which can be detachably rotatably installed by using a pin shaft, a bearing and a clasp spring) is detachably rotatably installed between the support frame 1 and the pedal 7, and the pedal 7 is driven to rotate by the hydraulic cylinder 42, so that the worker does not need to step on the pedal 7 (as shown in the figure). Figure 10

[0046] In order to ensure that the door body does not fall off during the turnover, a locking mechanism is further arranged on the first rotating shaft 2.

[0047] ​Furthermore, a third rotating shaft 10 is rotatably disposed between the two support frames 1, with the pedal 7 fixedly mounted at one end of the third rotating shaft 10. A second rotating shaft 9 is also rotatably disposed between the two support frames 1. A first gear 30 is fixedly mounted on the outer walls of both the third rotating shaft 10 and the second rotating shaft 9, meshing with each other. A sliding block 35 is connected to the second rotating shaft 9 via a connector.

[0048] The specific structure of the connecting member includes a rotating seat 36 fixedly mounted on one side of the sliding block 35, and a second sliding rod 32 is rotatably mounted on one side of the rotating seat 36. A second sleeve rod 31 is slidably mounted on the outer wall of the second sliding rod 32, and the other end of the second sleeve rod 31 is fixedly mounted on the outer wall of the second rotating shaft 9. In this way, when the pedal 7 is tilted downward, the second sleeve rod 31 and the second sliding rod 32 can be tilted upward, thereby driving the support bar 6 to move upward.

[0049] A guide rod 38 is fixedly mounted within the rectangular slot 34, with a tension spring 39 sleeved around its outer wall. A sliding block 35 slides over the guide rod 38, while the ends of the tension spring 39 are fixedly connected to the bottom wall of the rectangular slot 34 and the bottom of the sliding block 35, respectively. This arrangement ensures that when the pedal 7 is free of force, the tension spring 39 can drive the sliding block 35 downward to return to its original position and tilt the pedal 7 upward to facilitate subsequent operation.

[0050] The clamping mechanism comprises a second sliding ring 24 that slides over the outer wall of positioning rod 8. A first rectangular opening 25 is defined in the outer wall of positioning rod 8, and a first rectangular block 26 slides within this opening. The first rectangular block 26 is fixedly mounted within the second sliding ring 24, while a stopper 27 is fixedly mounted on the top of the second sliding ring 24 for use with the door flange. A pull rope 14 is provided in the positioning rod 8, one end of the pull rope 14 is fixedly connected to the first rectangular block 26, and the other end is fixedly wound around the outer wall of the second rotating shaft 9. During the resetting rotation of the second rotating shaft 9, the pull rope 14 can be stored so that the pull rope 14 is rewound around the second rotating shaft 9. Preferably, a take-up drum can be installed on the second rotating shaft 9. The diameter of the take-up drum is larger than the second rotating shaft 9, and the take-up drum will not touch the third rotating shaft 10. The pull rope 14 can be fixedly wound around the outer wall of the take-up drum, thereby driving the limit rod 27 to resist the door body flange. In order to adapt to different distances of door body flanges, the pull rope 14 and the second rotating shaft 9 are fixedly connected by another detachable connecting rope. The length of this connecting rope is cut according to the door body flange distance, so that it only needs to be adjusted once in the case of batch processing.

[0051] The specific structure of the locking mechanism includes a first sleeve rod 12 fixedly mounted on one side of the first rotating shaft 2. A first sliding ring 17 corresponding to the adjustment ring 18 is slidably mounted on the outer wall of the first sleeve rod 12, and a limit ring 13 corresponding to the fixed block 11 is also slidably mounted. The pull rope 14 is located between the corresponding first sliding ring 17 and the limit ring 13, and the limit ring 13 is fixedly connected to the corresponding adjustment ring 18. An electric push rod 16 is fixedly mounted on the outer wall of the first rotating shaft 2. This arrangement allows the electric push rod 16 to push the first sliding ring 17 toward the limit ring 13 when it is activated, thereby clamping and securing the pull rope 14.

[0052] Example 2: Reference Figures 1-10 , an improvement on the basis of Example 1: a connecting rod 37 is fixedly set between the two sliding blocks 35, and the support bar 6 is rotatably sleeved on the connecting rod 37. Two second gears 40 are rotatably sleeved on the outer wall of the connecting rod 37, and the two second gears 40 are respectively fixed on the two ends of the support bar 6. A rack 41 that meshes with the second gear 40 is fixed on one side of the fixed seat 5. This arrangement makes it possible to drive the connecting rod 37 and the second gear 40 to move when the sliding block 35 moves, and then drive the support bar 6 to flip through the rack 41, effectively reducing the paint adhesion on the bottom surface of the support bar 6, thereby reducing the paint on the surface of the support bar 6 adhering to the door body when it contacts the door body.

[0053] In order to adjust the position of the positioning rod 8, an adjustment ring 18 corresponding to the positioning rod 8 is slidably mounted on the outer wall of the first rotating shaft 2. A slide groove 19 is provided on the outer wall of the first rotating shaft 2, and a slider 20 corresponding to the adjustment ring 18 is slidably arranged in the slide groove 19. The slider 20 is fixed in the adjustment ring 18, and a fixed block 11 is fixed on the top of the adjustment ring 18. The positioning rod 8 passes through and is fixed on one side of the fixed block 11. In order to limit the adjustment ring 18, the same bolt 21 is threaded through one side of the adjustment ring 18 and the slider 20. One end of the bolt 21 is in contact with the slide groove 19. When the position of the hole on one side of the door body changes, it can be adjusted according to the position of the hole.

[0054] To ensure that the electric push rod 16 can stably push the three first sliding rings 17 simultaneously, the first sliding rod 15 slides within the first sleeve 12. A second rectangular opening 28 is defined on the outer wall of the first sleeve 12, and a second rectangular block 29 slides within this opening. The second rectangular block 29 is fixedly positioned between the corresponding first sliding ring 17 and the first sliding rod 15, while the output end of the electric push rod 16 is fixedly connected to the first sliding rod 15.

[0055] First, the foot steps on the pedal 7, the pedal 7 can drive the third rotating shaft 10 to rotate in the process of swinging down, the third rotating shaft 10 can drive the second rotating shaft 9 to rotate reversely in the process of rotating through the two meshing first gears 30, at this time, the limiting rod 27 will be pushed to the side away from the support seat 23, the second rotating shaft 9 can drive the second sleeve rod 31 to swing up in the process of rotating reversely, the second sleeve rod 31 can drive the sliding block 35 to move up through the second sliding rod 32 and the rotating seat 36 in the process of swinging up, and the second sliding rod 32 slides in the second sleeve rod 31 and rotates on the rotating seat 36, and the sliding block 35 can drive the support bar 6 to move up through the connecting rod 37 in the process of moving up, the support bar 6 can drive the support bar 6 to rotate through the meshing second gear 40 and the rack 41 in the process of moving up, and the sliding block 35 can stretch the guide rod 38 in the process of moving up, until the support bar 6 rotates 180°, and the bottom end of the door plate is placed on the support bar 6, and the door plate is pushed inwards, until the positioning rod 8 and the door plate are in contact and the support seat 23 and the turned edge are in contact;

[0056] Then release the foot, at this time, the sliding block 35 can move down under the action of the force of the tension spring 39, the sliding block 35 can drive the second rotating shaft 9 to rotate through the rotating seat 36, the second sliding rod 32 and the second sleeve rod 31 in the process of moving down, the second rotating shaft 9 can drive the third rotating shaft 10 to rotate reversely through the meshing first gear 30 in the process of rotating, and drive the pedal 7 to swing up, and the second rotating shaft 9 can collect one end of the pull rope 14 in the process of rotating, and drive the other end of the pull rope 14 to move in the positioning rod 8, which can drive the first rectangular block 26 to move, the first rectangular block 26 can drive the second sliding ring 24 to move in the process of moving, the second sliding ring 24 can drive the limiting rod 27 to contact the turned edge in the door body, and the door body is fixed on the three positioning rods 8 by using the pulling force;

[0057] Secondly, the electric push rod 16 is extended again, which can drive the first sliding rod 15 to move in the first sleeve rod 12, and drive the first sliding ring 17 to move through the second rectangular block 29, which can drive the first sliding ring 17 to move to the limiting ring 13, and the pull rope 14 is fixed by using the clamping of the first sliding ring 17 and the limiting ring 13;

[0058] Finally, the motor 4 is started again to drive the reducer 3 to rotate, drive the first rotating shaft 2 to rotate, and thus drive the door body to overturn (the overturning angle of the door body is less than fifty degrees), and the lower end of the door body is exposed for painting, and the door body does not need to be overturned by 360 degrees;

[0059] When the position of the positioning rod 8 needs to be adjusted, the bolt 21 is rotated in the opposite direction to move one end of the bolt 21 away from the first rotating shaft 2, and then the adjusting ring 18 is pushed to move, which can drive the slider 20 to move in the slide groove 19 and drive the fixed block 11 to move, thereby driving the positioning rod 8 to move and adjust the position of the positioning rod 8.

[0060] However, as is well known to those skilled in the art, the working principles and wiring methods of the motor 4 and the electric push rod 16 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0061] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automobile spray paint turning stand with an automatic locking mechanism, characterized in that: The invention comprises two support frames (1), a first rotating shaft (2) is provided between the two support frames (1) for rotation, three positioning rods (8) for supporting the door body are fixedly provided on one side of the first rotating shaft (2), a power source for driving the first rotating shaft (2) to rotate, and the door body is turned over by utilizing the rotation of the first rotating shaft (2), a support rod (22) is fixedly provided on the top of the positioning rod (8), and a support seat (23) is fixedly provided on the top of the support rod (22) for contacting the door body flange; Two fixing seats (5), with a support bar (6) for supporting the door body provided between the two fixing seats (5); A clamping mechanism is provided in the positioning rod (8) and is used in conjunction with the flange in the door body to fix the door panel on the positioning rod (8); A pedal (7), wherein the pedal (7) is connected to the support bar (6) and the clamping mechanism via a transmission member, and utilizes the pedaling force of the foot to drive the support bar (6) to move upward to support the door panel and release the clamping mechanism from fixing the door panel; The locking mechanism is arranged on the first rotating shaft (2) and is used to lock the clamping mechanism to prevent it from falling off during the turning process.

2. The automobile spray paint turning stand with an automatic locking mechanism according to claim 1, characterized in that: The two fixing seats (5) are respectively fixed on the top of the support frame (1), and a rectangular groove (34) is opened on the side of the two fixing seats (5) close to each other. A sliding block (35) is slidably provided in the rectangular groove (34). A third rotating shaft (10) is rotatably provided between the two support frames (1). The pedal (7) is fixed on one end of the third rotating shaft (10). A second rotating shaft (9) is rotatably provided between the two support frames (1). The outer walls of the third rotating shaft (10) and the second rotating shaft (9) are both fixedly sleeved with a meshing first gear (30), and the sliding block (35) is connected to the second rotating shaft (9) through a connecting member.

3. The automobile spray paint turning stand with an automatic locking mechanism according to claim 2, characterized in that: The connecting member comprises a rotating seat (36) fixedly arranged on one side of the sliding block (35); a second sliding rod (32) is rotatably arranged on one side of the rotating seat (36); a second sleeve rod (31) is slidably sleeved on the outer wall of the second sliding rod (32); and the other end of the second sleeve rod (31) is fixedly arranged on the outer wall of the second rotating shaft (9).

4. The automobile spray paint turning stand with an automatic locking mechanism according to claim 2, characterized in that: A guide rod (38) is fixedly provided in the rectangular groove (34), and a tension spring (39) is sleeved on the outer wall of the guide rod (38). The sliding block (35) is slidably sleeved on the guide rod (38), and the two ends of the tension spring (39) are respectively fixedly connected to the bottom wall of the rectangular groove (34) and the bottom of the sliding block (35), so as to drive the sliding block (35) to reset downward.

5. The automobile spray paint turning stand with an automatic locking mechanism according to claim 4, characterized in that: A connecting rod (37) is fixedly provided between the two sliding blocks (35), the support bar (6) is rotatably sleeved on the connecting rod (37), and two second gears (40) are rotatably sleeved on the outer wall of the connecting rod (37), and the two second gears (40) are respectively fixedly provided at both ends of the support bar (6). A rack (41) meshing with the second gear (40) is fixedly provided on one side of the fixing seat (5) for driving the support bar (6) to flip, thereby effectively reducing the paint adhered to the bottom surface of the support bar (6).

6. The automobile spray paint turning stand with an automatic locking mechanism according to claim 2, characterized in that: The clamping mechanism includes a second sliding ring (24) slidably sleeved on the outer wall of the positioning rod (8), the outer wall of the positioning rod (8) is provided with a first rectangular opening (25), a first rectangular block (26) is slidably provided in the first rectangular opening (25), the first rectangular block (26) is fixed in the second sliding ring (24), a limiting rod (27) used in conjunction with the door body flange is fixed on the top of the second sliding ring (24), a pull rope (14) is provided in the positioning rod (8), one end of the pull rope (14) is fixedly connected to the first rectangular block (26), and the other end of the pull rope (14) is fixedly wound around the outer wall of the second rotating shaft (9).

7. The automobile spray paint turning stand with an automatic locking mechanism according to claim 6, characterized in that: The outer wall of the first rotating shaft (2) is provided with an adjusting ring (18) corresponding to the positioning rod (8) and a sliding groove (19) is provided on the outer wall of the first rotating shaft (2). A slider (20) corresponding to the adjusting ring (18) is slidingly provided in the sliding groove (19). The slider (20) is fixed in the adjusting ring (18). A fixed block (11) is fixed on the top of the adjusting ring (18). The positioning rod (8) is fixedly provided on one side of the fixed block (11). The adjusting ring (18) and the slider (20) are threadedly provided with the same bolt (21). One end of the bolt (21) contacts the sliding groove (19) and is used to limit the adjusting ring (18).

8. The automobile spray paint turning stand with an automatic locking mechanism according to claim 7, characterized in that: The locking mechanism comprises a first sleeve rod (12) fixedly arranged on one side of the first rotating shaft (2); the outer wall sliding sleeve of the first sleeve rod (12) is provided with a first sliding ring (17) corresponding to the adjusting ring (18); the outer wall sliding sleeve of the first sleeve rod (12) is provided with a limiting ring (13) corresponding to the fixed block (11); the pull rope (14) is located between the corresponding first sliding ring (17) and the limiting ring (13); the limiting ring (13) is fixedly connected to the corresponding adjusting ring (18); the outer wall of the first rotating shaft (2) is fixedly provided with an electric push rod (16); the electric push rod (16) is used to push the first sliding ring (17) toward the limiting ring (13) to clamp and fix the pull rope (14).

9. The automobile spray paint turning stand with an automatic locking mechanism according to claim 8, characterized in that: The power source is a reducer (3) and a motor (4) fixedly installed on one side of one of the support frames (1), the output end of the reducer (3) is fixedly connected to the first rotating shaft (2), the output end of the motor (4) is fixedly connected to the input end of the reducer (3), a first sliding rod (15) is slidably provided in the first sleeve rod (12), a second rectangular opening (28) is opened on the outer wall of the first sleeve rod (12), a second rectangular block (29) is slidably provided in the second rectangular opening (28), the second rectangular block (29) is fixedly provided between the corresponding first sliding ring (17) and the first sliding rod (15), the output end of the electric push rod (16) is fixedly connected to the first sliding rod (15), and a hydraulic cylinder (42) is detachably and rotatably installed between the support frame (1) and the pedal (7).

10. The method for using the automobile paint spraying tilting stand with an automatic locking mechanism according to claim 9, characterized in that: The following steps are involved: S1. First, step on the pedal (7) to drive the support bar (6) to move upward, and place the door panel on the support bar (6), and push the door panel inward until the positioning rod (8) contacts the door panel; S2, then release the foot, at this time the support bar (6) can move downward under the action of the two guide rods (38), and drive the limit rod (27) to contact the flange inside the door body, and use the pulling force to fix the door body on the three positioning rods (8); S3, then restarting the electric push rod (16) to drive the first sliding rod (15) to move, and using the first sliding ring (17) and the limit ring (13) to clamp the pull rope (14); S4. Finally, the motor (4) is started to drive the reducer (3) to rotate, which drives the first rotating shaft (2) to rotate, thereby driving the door body to flip.

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