A special fixture for automobile painting assembly line frame

Abstract

The utility model relates to the technical field of automobile processing, especially a special fixture for automobile coating assembly line frame, including the placement board, the top middle fixed mounting of placement board has the bottom plate, the top of placement board and be located the both sides fixed mounting of bottom plate has displacement detector, the utility model discloses when needing to clamp the car body, through the displacement mechanism and drive the car body that places down to move left and right, and through displacement detector real -time monitoring the moving position of car body, and then realize accurate positioning to car body, and then in through the clamping mechanism of all around to the car body after positioning and stable clamping, clamping before accurate positioning to car body, can ensure that the car body is clamped after the position accurate and accurate, when the subsequent spray operation, the paint can be evenly sprayed on the car body surface, in this way, the coating thickness of different parts of car body is uniform, this can powerfully guarantee the anticorrosive property of coating, also can improve the overall decorative effect, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of automotive processing technology, and in particular to a special fixture for vehicle frames in an automotive painting production line. Background Technology

[0002] Automotive painting production lines typically utilize painting trolleys arranged sequentially on a high-altitude cantilever beam track, along with gripping robotic arms to hold and hold the cars. During painting, the robotic arms grip the car, and the painting trolleys move it to designated workstations to complete predetermined process steps. In this process, the smoothness of the painting trolleys' movement and the tightness of the grippers on the cars directly determine the smoothness of car transportation and the accuracy of painting positioning.

[0003] For example, the Chinese patent with authorization announcement number CN209423990U discloses a special fixture for vehicle frames in an automotive painting production line. Its working principle is as follows: "Connecting to an external controller, the vehicle body is placed on the pressure block. The vehicle body causes the movable column to move downwards under pressure. The movable column compresses the spring, causing the limiting block to move inside the limiting groove. The spring applies pressure to the pressure sensor. After reaching the set pressure value, the pressure sensor converts the received force into a signal and sends it to the external controller. The external controller controls the hydraulic pump, which in turn controls the retraction of the hydraulic telescopic rod." The retraction of the hydraulic telescopic rod can drive the movement of the connecting column, which in turn drives the rotation of the L-shaped fixed column. The L-shaped fixed column and the second fixed column can clamp the vehicle body. Although the above document can achieve a firm clamping of the vehicle body, it lacks a mechanism for positioning the vehicle body before clamping. This will result in an inaccurate position of the vehicle body after clamping. During subsequent painting operations, the paint cannot be evenly sprayed on the surface of the vehicle body. As a result, there will be a large difference in coating thickness in different parts of the vehicle body, which will seriously affect the anti-corrosion performance of the coating, damage the overall decorative effect, and reduce product quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides the following technical solution: a special fixture for vehicle frames in an automotive painting production line, comprising a placement plate, a base plate fixedly installed at the top center of the placement plate, and displacement detectors fixedly installed on the top of the placement plate and on both sides of the base plate.

[0005] The top of the base plate is symmetrically and slidingly equipped with a displacement mechanism for accurately positioning the vehicle body before clamping.

[0006] The top perimeter of the placement plate is fixedly equipped with clamping mechanisms for securing the vehicle body.

[0007] As an improvement to the above technical solution, the displacement mechanism includes a drive motor, a ball screw, a horizontal locking block, a hydraulic telescopic rod, a limiting locking block, a connecting block, support legs, and a stabilizing locking block. A horizontal locking groove is provided on the top of the base plate. The drive motor is fixedly installed on the right side of the base plate. The left end of the drive motor penetrates the inner right wall of the horizontal locking groove and extends into the groove. The ball screw is fixedly installed at the output end of the drive motor that extends into the horizontal locking groove. The horizontal locking block is threaded to the outside of the ball screw and slidably engages with the horizontal locking groove. The hydraulic telescopic rod is symmetrically fixedly installed on the top of the horizontal locking block, close to both ends. The limiting locking block is fixedly installed at the telescopic end of the hydraulic telescopic rod. The connecting block is fixedly installed on the outside of the telescopic end of the hydraulic telescopic rod. The support legs are symmetrically fixedly installed on the left and right sides of the connecting block. The stabilizing locking block is fixedly installed at the end of the support leg away from the connecting block.

[0008] As an improvement to the above technical solution, the clamping mechanism includes a clamping base, a pneumatic telescopic rod, and a clamping plate. The clamping base is rectangular and fixedly installed on the top of the placement plate with four sides. A clamping groove is opened in the middle of the top of the clamping base. The pneumatic telescopic rod is embedded in the top of the clamping base close to the front side. The telescopic end of the pneumatic telescopic rod extends into the clamping groove. The clamping plate is fixedly installed on the telescopic end of the pneumatic telescopic rod.

[0009] As an improvement to the above technical solution, both sides of the top slot of the limiting block are designed to be inclined.

[0010] As an improvement to the above technical solution, rubber pads are fixedly installed on both the rear inner wall of the clamping groove and the rear side of the clamping plate.

[0011] As an improvement to the above technical solution, a limiting slot is provided on the bottom inner wall of the clamping groove, and a limiting block is fixedly installed on the bottom of the clamping plate, and the limiting slot and the limiting block are slidably engaged.

[0012] The beneficial effects of this utility model are as follows: Before clamping the vehicle body, the displacement mechanism drives the downward-placed vehicle body to move forward, backward, left, and right, and the displacement detector monitors the movement position of the vehicle body in real time, thereby achieving precise positioning of the vehicle body. Then, the clamping mechanism around the vehicle body stably clamps the positioned vehicle body. Precise positioning of the vehicle body before clamping ensures that the vehicle body is accurately positioned after being clamped. During subsequent painting operations, the paint can be evenly sprayed on the surface of the vehicle body. In this way, the coating thickness of different parts of the vehicle body is uniform, which can effectively guarantee the anti-corrosion performance of the coating, improve the overall decorative effect, and improve product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the clamping base and clamping plate structure of this utility model;

[0015] Figure 3 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0016] Reference numerals: 1. Placement plate; 2. Base plate; 21. Displacement detector; 3. Horizontal slot; 31. Drive motor; 32. Ball screw; 33. Horizontal block; 34. Hydraulic telescopic rod; 35. Limiting block; 36. Connecting block; 37. Support leg; 38. Stabilizing block; 4. Clamping base; 41. Clamping groove; 42. Pneumatic telescopic rod; 43. Clamping plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0018] Reference Appendix Figure 1 ,exist Figure 1 In the diagram, 'a' points to the front view and 'b' points to the right-side view. These views are only used to understand the scheme.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a special fixture for vehicle frame in an automotive painting production line, including a placement plate 1, a base plate 2 fixedly installed at the top center of the placement plate 1, and displacement detectors 21 fixedly installed on the top of the placement plate 1 and on both sides of the base plate 2.

[0020] The top of the base plate 2 is symmetrically and slidingly equipped with a displacement mechanism for accurately positioning the vehicle body before clamping;

[0021] The top perimeter of the placement plate 1 is fixedly equipped with clamping mechanisms for securing the vehicle body.

[0022] In this implementation scheme, before clamping the vehicle body, the displacement mechanism drives the downward-placed vehicle body to move forward, backward, left, and right, and the displacement detector 21 monitors the movement position of the vehicle body in real time, thereby achieving precise positioning of the vehicle body. Then, the clamping mechanism around the vehicle body stably clamps the positioned vehicle body. Precise positioning of the vehicle body before clamping ensures that the vehicle body is accurately positioned after being clamped. During subsequent painting operations, the paint can be evenly sprayed on the surface of the vehicle body, so that the coating thickness of different parts of the vehicle body is uniform.

[0023] Specifically, the displacement mechanism includes a drive motor 31, a ball screw 32, a horizontal locking block 33, a hydraulic telescopic rod 34, a limit locking block 35, a connecting block 36, a support leg 37, and a stabilizing locking block 38. A horizontal locking groove 3 is provided on the top of the base plate 2. The drive motor 31 is fixedly installed on the right side of the base plate 2. The left end of the drive motor 31 penetrates the inner wall of the right side of the horizontal locking groove 3 and extends into the horizontal locking groove 3. The ball screw 32 is fixedly installed on the output end of the drive motor 31 that extends into the horizontal locking groove 3. The horizontal locking block 3... 3 is connected to the outside of the ball screw 32 by a thread. The horizontal locking block 33 slides and engages with the horizontal locking groove 3. The hydraulic telescopic rod 34 is symmetrically fixedly installed on the top of the horizontal locking block 33 close to both ends. The limiting locking block 35 is fixedly installed on the telescopic end of the hydraulic telescopic rod 34. The connecting block 36 is fixedly installed on the outside of the telescopic end of the hydraulic telescopic rod 34. The outrigger 37 is symmetrically fixedly installed on the left and right sides of the connecting block 36. The stabilizing locking block 38 is fixedly installed on the end of the outrigger 37 away from the connecting block 36.

[0024] In this embodiment, the precise positioning of the vehicle body before it is clamped is achieved through the cooperation of the internal structure of the displacement mechanism.

[0025] Specifically, the clamping mechanism includes a clamping base 4, a pneumatic telescopic rod 42, and a clamping plate 43. The clamping base 4 is rectangular and fixedly installed on the top of the placement plate 1 with four sides. A clamping groove 41 is opened in the middle of the top of the clamping base 4. The pneumatic telescopic rod 42 is embedded in the top of the clamping base 4 close to the front side. The telescopic end of the pneumatic telescopic rod 42 extends into the clamping groove 41. The clamping plate 43 is fixedly installed on the telescopic end of the pneumatic telescopic rod 42.

[0026] In this embodiment, the vehicle body is stably clamped by the cooperation of the internal structure of the clamping mechanism.

[0027] Specifically, both sides of the top slot of the limit block 35 are designed to be inclined.

[0028] In this embodiment, the positioning of the front and rear sides of the vehicle body is achieved by the inclination design inside the slot of the limiting block 35 and the cooperation of the limiting blocks 35 on both sides.

[0029] Specifically, rubber pads are fixedly installed on the rear inner wall of the clamping groove 41 and the rear side of the clamping plate 43.

[0030] In this embodiment, the stability of the vehicle body after being clamped is increased by rubber pads on both sides.

[0031] Specifically, a limiting slot is provided on the bottom inner wall of the clamping groove 41, and a limiting block is fixedly installed on the bottom of the clamping plate 43. The limiting slot and the limiting block are slidably engaged.

[0032] In this embodiment, the stability of the clamping plate 43 during moving clamping is further increased.

[0033] In use, the PLC controls the displacement detector 21, drive motor 31, hydraulic telescopic rod 34, and pneumatic telescopic rod 42. Before clamping the vehicle body, the vehicle body is placed on the limit blocks 35 on both sides. Since the tops of the limit blocks 35 on both sides are inclined, they position the vehicle body front and back when lifting it. Simultaneously, when the vehicle body falls into the slots on the limit blocks 35, the stabilizing blocks 38 on both sides also lift the vehicle body, increasing its stability. Then, the drive motor 31 is activated according to the vehicle body's position. The drive motor 31 drives the ball screw 32 to rotate, which in turn moves the horizontal block 33. The horizontal block 33, through the hydraulic telescopic rods 34 and the limit blocks 35 on both sides, moves the vehicle body left and right. Meanwhile, the displacement detector 21 monitors the vehicle body's position in real time. Monitoring: When the displacement detector 21 detects that the vehicle body has moved to the appropriate position, the ball screw 32 and other structures release the conveying of the vehicle body. At this time, the hydraulic telescopic rods 34 on both sides drive their corresponding limit blocks 35 to move downward. The vehicle body also moves downward due to its own weight. When the part of the vehicle body that needs to be clamped moves into the clamping groove 41, the pneumatic telescopic rod 42 is activated. The pneumatic telescopic rod 42 drives the clamping plate 43 to move and cooperate with the clamping groove 41 to complete the clamping and fixing of the vehicle body. Due to the design of the rubber pads on both sides, the stability of clamping the vehicle body is increased. Precise positioning of the vehicle body before clamping ensures that the position of the vehicle body is accurate after being clamped. During subsequent spraying operations, the paint can be evenly sprayed on the surface of the vehicle body. In this way, the coating thickness of different parts of the vehicle body is uniform, which can effectively guarantee the anti-corrosion performance of the coating, improve the overall decorative effect, and improve product quality.

[0034] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A special fixture for vehicle frames in an automotive painting production line, comprising a placement plate (1), characterized in that: A base plate (2) is fixedly installed at the top center of the placement plate (1), and displacement detectors (21) are fixedly installed at the top of the placement plate (1) and on both sides of the base plate (2). The top of the base plate (2) is symmetrically and slidably provided with a displacement mechanism for accurately positioning the vehicle body before clamping; The top periphery of the placement plate (1) is fixedly provided with a clamping mechanism for fixing the vehicle body.

2. The special fixture for vehicle frames in an automotive painting production line according to claim 1, characterized in that: The displacement mechanism includes a drive motor (31), a ball screw (32), a horizontal locking block (33), a hydraulic telescopic rod (34), a limiting locking block (35), a connecting block (36), a support leg (37), and a stabilizing locking block (38). A horizontal locking groove (3) is provided on the top of the base plate (2). The drive motor (31) is fixedly installed on the right side of the base plate (2). The left end of the drive motor (31) penetrates the right inner wall of the horizontal locking groove (3) and extends into the horizontal locking groove (3). The ball screw (32) is fixedly installed on the output end of the drive motor (31) extending into the horizontal locking groove (3). The horizontal locking block... (33) is connected to the outside of the ball screw (32) by a thread. The horizontal locking block (33) is slidably engaged with the horizontal locking groove (3). The hydraulic telescopic rod (34) is symmetrically fixedly installed at the top of the horizontal locking block (33) close to both ends. The limiting locking block (35) is fixedly installed at the telescopic end of the hydraulic telescopic rod (34). The connecting block (36) is fixedly installed on the outside of the telescopic end of the hydraulic telescopic rod (34). The outrigger (37) is symmetrically fixedly installed on the left and right sides of the connecting block (36). The stabilizing locking block (38) is fixedly installed at the end of the outrigger (37) away from the connecting block (36).

3. The special fixture for vehicle frames in an automotive painting production line according to claim 1, characterized in that: The clamping mechanism includes a clamping base (4), a pneumatic telescopic rod (42), and a clamping plate (43). The clamping base (4) is rectangular and fixedly installed on the top of the placement plate (1) with four sides. A clamping groove (41) is opened in the middle of the top of the clamping base (4). The pneumatic telescopic rod (42) is embedded in the top of the clamping base (4) close to the front side. The telescopic end of the pneumatic telescopic rod (42) extends into the clamping groove (41). The clamping plate (43) is fixedly installed on the telescopic end of the pneumatic telescopic rod (42).

4. A special fixture for vehicle frames in an automotive painting production line according to claim 2, characterized in that: The top slot of the limiting block (35) has an inclined design on both sides.

5. A special fixture for vehicle frames in an automotive painting production line according to claim 3, characterized in that: Rubber pads are fixedly installed on the rear inner wall of the clamping groove (41) and the rear side of the clamping plate (43).

6. A special fixture for vehicle frames in an automotive painting production line according to claim 3, characterized in that: The bottom inner wall of the clamping groove (41) is provided with a limiting slot, and the bottom of the clamping plate (43) is fixedly installed with a limiting block, and the limiting slot and the limiting block are slidably engaged.

Images