Automobile parts size detection device and detection method

Abstract

The present invention relates to the technical field of automobile parts detection devices, and specifically to an automobile parts size detection device and detection method, comprising a base, a frame fixed on the base, a supporting frame provided on the base, the supporting frame driven to move horizontally by an electric guide rail mechanism provided on the base, a limiting inner tube for sleeve installation of pipe accessories rotatably provided on the supporting frame, a top frame fixed on the frame, a cylinder fixed on the top frame, a fixed disc fixed on the output piston rod of the cylinder, a movable disc for pressing and fixing the top of the pipe accessory provided below the fixed disc, the fixed disc and the movable disc fixedly connected by a spring, an oblique support assembly provided between the fixed disc and the movable disc, the present invention can clamp and fix the pipe accessories, calibrate their verticality, and then directly perform size measurement in conjunction with a laser measuring instrument, and can be performed continuously without the need for multi-structure coordination and distributed operation, thereby improving measurement efficiency and accuracy of size measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts detection devices, in particular to an automobile parts size detection device and a detection method. Background Art

[0002] In the automotive manufacturing sector, the dimensional accuracy of plastic and metal parts directly affects the assembly quality and safety of the entire vehicle. With the development of lightweight and intelligent vehicles, the efficiency and accuracy requirements for part dimensional inspection are increasing. However, existing technologies still have many shortcomings, which are specifically reflected in the following aspects:

[0003] Traditionally, the dimensional inspection of automotive parts relies on operators to measure each item one by one using handheld calipers, micrometers and other tools. This is not only inefficient, but also prone to measurement deviations due to human factors (such as visual errors and inconsistent operations). Manual measurement is difficult to achieve full coverage, and the risk of missed detection and false detection is significantly increased.

[0004] In order to reduce manual measurement errors, there are also automated equipment to detect the size of automobile parts. During the detection, a fixed structure is often used to clamp and fix the automobile parts. After the automobile parts are clamped and fixed by the fixed structure, the automobile parts can be measured in combination with a measuring component. For example, some devices, such as the automobile parts detection device disclosed in patent CN218787815U, are symmetrically fixedly connected to the upper surface of the detection table with a fixing plate, and the internal thread of the fixing plate is connected to a screw. One end of the screw is rotatably connected to an arc-shaped clamping plate, and the arc-shaped clamping plate is used to clamp the automobile parts from both sides to fix them. However, the verticality of the pipe parts cannot be guaranteed during fixation. When the pipe parts are tilted, the accuracy of the measurement will be affected. In addition, the fixing and measurement still rely on step-by-step operations, which limits the efficiency.

[0005] In view of the existing technical problems, it is urgent to develop an automobile parts size detection device with high integration and strong adaptability, which can achieve the purpose of adaptive clamping, verticality correction during measurement, and intelligent data processing, thereby improving detection efficiency and accuracy and reducing production costs. To this end, we provide an automobile parts size detection device and detection method to solve the above-mentioned problems. Summary of the Invention

[0006] The object of the present invention is to provide a device and method for detecting the dimensions of automobile parts to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for detecting the size of automobile parts comprises a base, a frame is fixed on the base, a supporting frame is provided on the base, the supporting frame is driven to move horizontally by an electric guide rail mechanism provided on the base, a limiting inner tube for sleeve installation of pipe accessories is rotatably provided on the supporting frame, a top frame is fixed on the frame, a cylinder is fixed on the top frame, a fixed disc is fixed on the output piston rod of the cylinder, a movable disc for pressing and fixing the top of the pipe accessories is provided below the fixed disc, the fixed disc and the movable disc are fixedly connected by a spring, an oblique support assembly is provided between the fixed disc and the movable disc, a sleeve is fixed at the center of the movable disc, and an insertion rod that penetrates and is inserted into the sleeve is fixed on the output piston rod;

[0009] The insertion rod is movably inserted into the inner limiting tube. The insertion rod and the inner limiting tube cooperate with each other through a first linkage structure. When the insertion rod moves up and down in the inner limiting tube, it can drive the inner limiting tube to rotate clockwise or counterclockwise.

[0010] A plurality of arc-shaped splints are provided on the circumferential side of the limiting inner tube. The limiting inner tube and the arc-shaped splints are coordinated through a second linkage structure. When the limiting inner tube rotates clockwise or counterclockwise, the plurality of arc-shaped splints are driven to move horizontally in a direction away from or close to the limiting inner tube at the same time.

[0011] As described above, a device for detecting the size of automobile parts: a mounting frame is fixed on the supporting frame, a ring frame is fixed on the mounting frame and is sleeved on the outer circumference of the limiting inner tube, and a plurality of laser measuring instruments for measuring the height and diameter of pipe accessories are installed on the ring frame at equal angles in a circumferential direction.

[0012] An automotive parts size detection device as described above: the electric guide rail mechanism includes a bearing seat fixed on the base, a screw is rotatably mounted on the bearing seat, a motor is fixed on the base, the output end of the motor is connected to the screw through a coupling to drive the screw to rotate, an adjustment block is fixed to the bottom of the support frame, and a first limiting rod is fixed on the bearing seat and is respectively located on both sides of the screw, the screw is inserted into a thread groove opened on the adjustment block and is threadedly engaged with the thread groove, and the first limiting rod is inserted into the inside of the limiting hole opened on the adjustment block.

[0013] In the above-mentioned device for detecting the size of automobile parts, the number of the springs is set to be multiple, and the multiple springs are circumferentially distributed at equal angles between the fixed disc and the movable disc, and the two ends of the springs are respectively fixed to the fixed disc and the movable disc.

[0014] As described above, an automobile parts size detection device: the oblique support assembly includes a plurality of rectangular cylinders fixed circumferentially at equal angles on a movable circular disc, rectangular plates are movably inserted in the rectangular cylinders, a fixing ring is sleeved and installed on the outer circumference of the insertion rod, a hinged rod is provided between the fixing ring and the rectangular plate, and the two ends of the hinged rod are hinged to the rectangular plate and the fixing ring respectively.

[0015] In the above-mentioned automobile parts size detection device, two second limiting rods are vertically fixed on the movable disc, and the second limiting rods respectively pass through the fixed disc and the top frame to limit the movable disc when it moves up and down.

[0016] As described above, the automotive parts size detection device: the first linkage structure includes a spiral groove opened on the insertion rod and a ball movably embedded and clamped on the inner wall of the limiting inner tube, the ball movably embedded and clamped in the spiral groove and can roll along the track where the spiral groove is located.

[0017] As described above, the second linkage structure includes a fixed ring seat fixed on the supporting frame, the limiting inner tube is rotatably installed on the inner side of the fixed ring seat, a turntable is fixed on the limiting inner tube, a plurality of arc grooves with equal angles and circumferential distribution are opened on the turntable, a clamping column is movably clamped in the arc groove, a connecting rod arranged through the fixed ring seat is fixed on the clamping column, and one end of the connecting rod is fixed to the arc splint.

[0018] In the above-mentioned device for detecting the size of automobile parts, a soft rubber layer is fixedly adhered to the surface of the arc-shaped clamping plate.

[0019] A detection method for an automobile parts size detection device comprises the following steps:

[0020] S1, first put the pipe fitting to be tested on the limit inner pipe;

[0021] S2, start the motor to drive the screw to rotate, and use the screw and the thread of the thread groove to drive the adjustment block to move, thereby driving the support frame to move so that the pipe fittings mounted on the limit inner pipe are moved to the bottom of the movable disc;

[0022] S3, start the cylinder to drive the fixed disc to move downward, drive the movable disc to move downward and contact the top of the pipe fitting to press the pipe fitting downward, and cooperate with the supporting frame to clamp and limit the upper and lower ends of the pipe fitting;

[0023] S4, the cylinder drives the fixed disc to continue to move downward to compress the spring between the fixed disc and the movable disc. The movable disc stops and the fixed disc continues to move downward, that is, the insertion rod continues to move downward in the sleeve and is inserted into the inner cavity of the limiting inner tube. The ball rolls in the spiral groove track to drive the limiting inner tube to rotate counterclockwise, thereby driving multiple arc-shaped clamping plates to move toward the side close to the limiting inner tube at the same time. The multiple arc-shaped clamping plates are synchronously gathered toward the limiting inner tube to clamp the outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube to correct the verticality of the pipe fittings.

[0024] S5, starting the laser measuring instrument, and measuring the height and diameter of the pipe fittings simultaneously by using multiple laser measuring instruments to obtain the height and diameter dimension values of the pipe fittings.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the supporting frame is driven to move horizontally by the electric guide rail mechanism arranged on the base, and a limiting inner tube for sleeve installation of pipe accessories is rotatably arranged on the supporting frame, so that the pipe accessories sleeved on the limiting inner tube can be transported by the horizontal movement of the supporting frame, a top frame is fixed on the frame, a cylinder is fixed on the top frame, a fixed disc is fixed on the output piston rod of the cylinder, and a movable disc for pressing and fixing the top of the pipe accessories is arranged below the fixed disc. The starting cylinder can drive the fixed disc to move downward and drive the movable disc to move downward, thereby pressing and limiting the top of the pipe fittings. A plug rod that penetrates and is inserted into the sleeve is fixed on the output piston rod. The plug rod is movably inserted into the limiting inner tube. The plug rod and the limiting inner tube cooperate through a first linkage structure. When the plug rod moves up and down in the limiting inner tube, it can drive the limiting inner tube to rotate clockwise or counterclockwise. When the limiting inner tube rotates clockwise or counterclockwise, it will drive multiple arc-shaped splints to move horizontally in the direction away from or close to the limiting inner tube at the same time;

[0026] When the present invention is in use, firstly, the pipe fitting to be tested is sleeved on the limiting inner pipe, and the electric guide rail mechanism is used to drive the supporting frame to move so that the pipe fitting sleeved on the limiting inner pipe is moved to just below the movable disc; then the cylinder is started to drive the fixed disc to move downward, driving the movable disc to move downward and contact the top of the pipe fitting to press the pipe fitting downward, and the supporting frame clamps and limits its upper and lower ends, so that the pipe fitting is initially limited in the vertical direction, and then the cylinder drives the fixed disc to continue to move downward to compress the spring between the fixed disc and the movable disc, and the movable disc stops while the fixed disc continues to move downward, that is, the insertion rod continues to move downward in the sleeve. Move and cooperate to insert into the inner cavity of the limiting inner tube, and the ball rolls in the spiral groove track to drive the limiting inner tube to rotate counterclockwise to drive multiple arc-shaped clamping plates to move simultaneously to the side close to the limiting inner tube, and the multiple arc-shaped clamping plates are synchronously gathered toward the limiting inner tube to clamp the outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube to correct the verticality of the pipe fittings, so that the verticality of the pipe fittings is corrected after the pipe fittings are limited and fixed to ensure that they are in a vertical state during measurement, and then start the laser measuring instrument, and use multiple laser measuring instruments to measure the height and diameter of the pipe fittings at the same time to obtain the height and diameter size values of the pipe fittings;

[0027] Therefore, the present invention can clamp and fix pipe accessories, calibrate their verticality, and then directly measure their dimensions in conjunction with a laser measuring instrument. The clamping, verticality correction, and dimension measurement of the accessories can be performed continuously without the need for multi-structure coordination and distributed operations, thereby improving measurement efficiency and ensuring the verticality of pipe parts during measurement, thereby improving the accuracy of dimension measurement of pipe automobile accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an automobile parts size detection device from a first perspective.

[0029] Figure 2 This is a schematic diagram of the overall structure of an automobile parts size detection device from a second perspective.

[0030] Figure 3 for Figure 1 Schematic diagram of the decomposed local structure.

[0031] Figure 4 for Figure 3 Schematic diagram of the structure from another perspective.

[0032] Figure 5 For Figure 3 Schematic diagram of the local structure after decomposition based on .

[0033] Figure 6 The diagram is a structural diagram of a top frame, a fixed disc, a movable disc, and a spring connection in a device for detecting the size of automobile parts.

[0034] Figure 7 for Figure 6 Schematic diagram of the structure from another perspective.

[0035] Figure 8 for Figure 6 Schematic diagram of the explosion structure.

[0036] Figure 9 For Figure 8 Schematic diagram of the local structure after further decomposition based on .

[0037] Figure 10 This is a partial structural diagram of a device for detecting the size of automotive parts.

[0038] In the figure: 1. base; 2. frame; 3. supporting frame; 4. limiting inner tube; 5. top frame; 6. cylinder; 7. fixed disc; 8. movable disc; 9. spring; 10. sleeve; 11. plug rod; 12. rectangular cylinder; 13. fixing ring; 14. hinged rod; 15. rectangular plate; 16. spiral groove; 17. ball; 18. mounting frame; 19. ring frame; 20. laser measuring instrument; 21. fixed ring seat; 22. turntable; 23. arc groove; 24. connecting rod; 25. clamping column; 26. arc splint; 27. bearing seat; 28. screw rod; 29. motor; 30. first limiting rod; 31. adjusting block; 32. threaded groove; 33. limiting hole; 34. second limiting rod. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] See also Figures 1 to 10 As an embodiment of the present invention, a device and method for detecting the size of automobile parts include a base 1, a frame 2 is fixed on the base 1, a supporting frame 3 is provided on the base 1, the supporting frame 3 is driven to move horizontally by an electric guide rail mechanism provided on the base 1, a limiting inner tube 4 for sleeve installation of pipe accessories is rotatably provided on the supporting frame 3, a top frame 5 is fixed on the frame 2, a cylinder 6 is fixed on the top frame 5, a fixed disc 7 is fixed on the output piston rod of the cylinder 6, a movable disc 8 for pressing and fixing the top of the pipe accessory is provided below the fixed disc 7, the fixed disc 7 and the movable disc 8 are fixedly connected by a spring 9, an oblique support assembly is provided between the fixed disc 7 and the movable disc 8, a sleeve 10 is fixed at the center of the movable disc 8, and an insertion rod 11 that penetrates and is inserted into the sleeve 10 is fixed on the output piston rod;

[0041] The insertion rod 11 is movably inserted into the inner limit tube 4. The insertion rod 11 and the inner limit tube 4 cooperate with each other through a first linkage structure. When the insertion rod 11 moves up and down in the inner limit tube 4, it can drive the inner limit tube 4 to rotate clockwise or counterclockwise.

[0042] A plurality of arc-shaped splints 26 are provided on the circumferential side of the limiting inner tube 4. The limiting inner tube 4 and the arc-shaped splints 26 are coordinated through a second linkage structure. When the limiting inner tube 4 rotates clockwise or counterclockwise, the plurality of arc-shaped splints 26 will be driven to move horizontally in a direction away from or close to the limiting inner tube 4 at the same time.

[0043] After the cam 11 is in the closed position, the piston rod 11 is rotated to move upwards, and the piston rod 11 is rotated downward ... When the inner tube 4 moves up and down, it can drive the limiting inner tube 4 to rotate clockwise or counterclockwise. The limiting inner tube 4 and the arc-shaped clamping plate 26 cooperate with each other through a second linkage structure. When the limiting inner tube 4 rotates clockwise or counterclockwise, it will drive multiple arc-shaped clamping plates 26 to move horizontally in the direction away from or close to the limiting inner tube 4 at the same time, so as to drive multiple arc-shaped clamping plates 26 to move toward the side close to the limiting inner tube 4 at the same time. The multiple arc-shaped clamping plates 26 are synchronously gathered toward the limiting inner tube 4 to clamp the outer periphery of the bottom end of the pipe fitting mounted on the limiting inner tube 4 to correct the verticality of the pipe fitting, so that the verticality of the pipe fitting is corrected after the pipe fitting is limited and fixed, ensuring that it is in a vertical state during measurement, and then starting the laser measuring instrument 20. The height and diameter of the pipe fitting are measured simultaneously by multiple laser measuring instruments 20 to obtain the height and diameter size values of the pipe fitting.

[0044] As a further solution of the present invention, a mounting frame 18 is fixed to the support frame 3, and a ring frame 19 is fixed to the mounting frame 18 and is mounted on the outer circumference of the limiting inner tube 4. A plurality of laser measuring instruments 20 for measuring the height and diameter of pipe fittings are mounted at equal angles in a circular direction on the ring frame 19. The model is an IMPULSE 200XL laser rangefinder / altimeter.

[0045] In this embodiment, the height, horizontal distance, pitch angle and other data of the pipe fittings mounted on the limiting inner tube 4 can be directly measured by cooperating with multiple laser measuring instruments 20, thereby indirectly measuring the diameter of the pipe fittings through a three-dimensional measurement system, such as by combining the MapStar option to expand into X / Y / Z three-dimensional coordinate measurement.

[0046] As a further solution of the present invention, the electric guide rail mechanism includes a bearing seat 27 fixed on the base 1, a screw rod 28 is rotatably mounted on the bearing seat 27, a motor 29 is fixed on the base 1, the output end of the motor 29 is connected to the screw rod 28 through a coupling to drive the screw rod 28 to rotate, an adjusting block 31 is fixed to the bottom of the supporting frame 3, and a first limiting rod 30 is fixed on the bearing seat 27, which is respectively located on both sides of the screw rod 28. The screw rod 28 is inserted into the thread groove 32 opened on the adjusting block 31 and is threadedly matched with the thread groove 32. The first limiting rod 30 is inserted into the limiting hole 33 opened on the adjusting block 31.

[0047] In this embodiment, the motor 29 is electrically connected to the external power supply through a wire. The motor 29 is started to drive the screw rod 28 to rotate. The screw rod 28 is inserted into the thread groove 32 opened on the adjustment block 31 and is threadedly engaged with the thread groove 32. The threaded engagement between the screw rod 28 and the thread groove 32 drives the adjustment block 31 to move, thereby driving the support frame 3 to move so that the pipe accessories mounted on the limiting inner tube 4 are moved to directly below the movable disc 8.

[0048] As a further solution of the present invention, the number of springs 9 is set to be multiple, and the multiple springs 9 are distributed circumferentially at equal angles between the fixed disk 7 and the movable disk 8, and the two ends of the springs 9 are fixed to the fixed disk 7 and the movable disk 8 respectively.

[0049] In this embodiment, a plurality of springs 9 are circumferentially distributed at equal angles between the fixed disc 7 and the movable disc 8. The springs 9 can realize the connection between the fixed disc 7 and the cylinder 6, and at the same time, the elastic expansion and contraction characteristics of the springs 9 can ensure that the fixed disc 7 and the movable disc 8 can move relative to each other.

[0050] As a further solution of the present invention, the oblique support assembly includes a plurality of rectangular cylinders 12 fixed at equal angles in a circumferential direction on the movable disc 8, rectangular plates 15 are movably inserted in the rectangular cylinders 12, a fixing ring 13 is installed on the outer periphery of the insertion rod 11, and a hinged rod 14 is arranged between the fixing ring 13 and the rectangular plate 15, and the two ends of the hinged rod 14 are hinged to the rectangular plate 15 and the fixing ring 13 respectively.

[0051] In this embodiment, the two ends of the hinged rod 14 are hinged to the rectangular plate 15 and the fixed ring 13 respectively. The rectangular plate 15 can be slidably inserted in the rectangular cylinder 12. The movable disc 8 can be supported by the hinged rod 14. At the same time, the rectangular plate 15 can slide in the rectangular cylinder 12 to drive the hinged rod 14 to rotate so that the stability of the fixed disc 7 and the movable disc 8 during relative displacement can be prevented from position displacement of the movable disc 8.

[0052] As a further solution of the present invention, two second limiting rods 34 are vertically fixed on the movable disc 8. The second limiting rods 34 are respectively arranged to pass through the fixed disc 7 and the top frame 5 to limit the movable disc 8 when it moves up and down.

[0053] In this embodiment, the second limiting rod 34 is respectively provided through the fixed disc 7 and the top frame 5. When the movable disc 8 is squeezed and moves upward, the second limiting rod 34 moves up and down to limit the movable disc 8 when it moves up and down, thereby preventing the movable disc 8 from tilting when it moves up and down.

[0054] As a further solution of the present invention, the first linkage structure includes a spiral groove 16 opened on the insertion rod 11 and a ball 17 movably embedded and clamped on the inner wall of the limiting inner tube 4. The ball 17 is movably embedded and clamped in the spiral groove 16 and can roll along the track where the spiral groove 16 is located.

[0055] In this embodiment, the cylinder 6 drives the fixed disc 7 to continue to move downward to compress the spring 9 between the fixed disc 7 and the movable disc 8. The movable disc 8 is stationary while the fixed disc 7 continues to move downward, that is, the insertion rod 11 continues to move downward in the sleeve 10 and cooperates to be inserted into the inner cavity of the limiting inner tube 4. The ball 17 rolls in the spiral groove 16 track to drive the limiting inner tube 4 to rotate counterclockwise to drive the multiple arc-shaped splints 26 to move to the side close to the limiting inner tube 4 at the same time. The outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube 4 is synchronously gathered to clamp the pipe fittings to correct the verticality of the pipe fittings. At the same time, after the measurement is completed, when the fixed disc 7 moves up and the insertion rod 11 is withdrawn from the inner cavity of the limiting inner tube 4, the ball 17 rotates and rolls in the track of the spiral groove 16 to drive the limiting inner tube 4 to rotate clockwise to drive multiple arc-shaped clamping plates 26 to move to the side away from the limiting inner tube 4 at the same time to release the clamping of the pipe fittings, and restore the limiting inner tube 4 to the initial rotation angle for easy use in the next measurement.

[0056] It should be noted that when the limiting inner tube 4 is reset to the initial rotation angle, the ball 17 is aligned with the lower edge of the track where the spiral groove 16 is located, that is, when the insertion rod 11 is just inserted into the limiting inner tube 4, the ball 17 is just aligned and embedded in the track where the spiral groove 16 is located.

[0057] As a further solution of the present invention, the second linkage structure includes a fixed ring seat 21 fixed on the supporting frame 3, the limiting inner tube 4 is rotatably installed on the inner side of the fixed ring seat 21, a turntable 22 is fixed on the limiting inner tube 4, and a plurality of arc grooves 23 with equal angles and circumferential distribution are opened on the turntable 22. A clamping column 25 is movably clamped in the arc groove 23, and a connecting rod 24 arranged through the fixed ring seat 21 is fixed on the clamping column 25, and one end of the connecting rod 24 is fixed to the arc splint 26.

[0058] In this embodiment, when the limiting inner tube 4 rotates, it will drive the clamping column 25 to slide in the slideway where the arc groove 23 is located, thereby driving the connecting rod 24 set through the fixed ring seat 21 to move horizontally, and then driving the arc-shaped clamping plate 26 to move horizontally. By moving multiple arc-shaped clamping plates 26 synchronously and gathering together, the bottom end of the pipe fitting can be clamped to correct the verticality of the pipe fitting.

[0059] As a further solution of the present invention, a soft rubber layer is fixedly adhered to the surface of the arc-shaped splint 26 .

[0060] In this embodiment, the bottom end of the pipe fitting can be clamped by synchronously moving and gathering the plurality of arc-shaped clamping plates 26. The soft rubber layer can reduce structural damage to the surface of the pipe fitting when clamping.

[0061] The working principle of the invention is as follows: when in use, firstly, the pipe fitting to be tested is sleeved on the limiting inner tube 4, and the electric guide mechanism is used to drive the supporting frame 3 to move so that the pipe fitting sleeved on the limiting inner tube 4 is moved to just below the movable disc 8; then the cylinder 6 is started to drive the fixed disc 7 to move downward, driving the movable disc 8 to move downward and contact the top of the pipe fitting to press the pipe fitting downward and cooperate with the supporting frame 3 to clamp and limit its upper and lower ends, so that the pipe fitting is initially limited in the vertical direction, and then the cylinder 6 drives the fixed disc 7 to continue to move downward. The spring 9 between the fixed disc 7 and the movable disc 8 is compressed, and the movable disc 8 is stationary while the fixed disc 7 continues to move downward, that is, the insertion rod 11 continues to move downward in the sleeve 10 and is inserted into the inner cavity of the limiting inner tube 4. The insertion rod 11 and the limiting inner tube 4 are matched through a first linkage structure. When the insertion rod 11 moves up and down in the limiting inner tube 4, it can drive the limiting inner tube 4 to rotate clockwise or counterclockwise. The limiting inner tube 4 and the arc-shaped splint 26 are matched through a second linkage structure. When the limiting inner tube 4 rotates clockwise or counterclockwise, it will bring The plurality of arc splints 26 are moved horizontally in a direction away from or close to the limiting inner tube 4 at the same time, so as to drive the plurality of arc splints 26 to move toward the side close to the limiting inner tube 4 at the same time. The plurality of arc splints 26 are synchronously gathered toward the limiting inner tube 4 to clamp the outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube 4 to correct the verticality of the pipe fittings. After the pipe fittings are limited and fixed, the verticality is corrected to ensure that they are in a vertical state during measurement, and then the laser measuring instrument 20 is started. The pipe fittings are measured by the plurality of laser measuring instruments 20. The height and diameter of the pipe accessories are measured simultaneously, and the height and diameter size values of the pipe accessories are obtained by measurement. After the measurement, the cylinder 6 drives the fixed disc 7 and the movable disc 8 to move upward to release the fixation on the upper end of the pipe accessories, and the insertion rod 11 is disengaged from the limiting inner tube 4. At the same time, the limiting inner tube 4 is flipped and reset, and drives multiple arc-shaped splints 26 to move toward the outside of the limiting inner tube 4 to release the clamping fixation of the pipe accessories. The electric guide rail is used to drive the support frame 3 to move the pipe accessories to move out from under the movable disc 8, thereby removing the tested pipe accessories.

[0062] The above embodiments are exemplary rather than restrictive, so any technical solution that can be implemented in other specific forms without departing from the spirit or basic features of the present invention is included in the present invention.

Claims

1. A device for detecting the size of automobile parts, comprising a base (1), a frame (2) being fixed on the base (1), characterized in that: The base (1) is provided with a supporting frame (3), which is driven to move horizontally by an electric guide rail mechanism provided on the base (1), and a limiting inner tube (4) for sleeve installation of pipe accessories is rotatably provided on the supporting frame (3), a top frame (5) is fixed on the frame (2), a cylinder (6) is fixed on the top frame (5), a fixed disc (7) is fixed on the output piston rod of the cylinder (6), a movable disc (8) for pressing and fixing the top of the pipe accessories is provided below the fixed disc (7), the fixed disc (7) and the movable disc (8) are fixedly connected by a spring (9), an oblique support assembly is provided between the fixed disc (7) and the movable disc (8), a sleeve (10) is fixed at the center of the movable disc (8), and an insertion rod (11) that penetrates and is inserted into the sleeve (10) is fixed on the output piston rod; The insertion rod (11) is movably inserted into the inner limiting tube (4), and the insertion rod (11) and the inner limiting tube (4) are coordinated via a first linkage structure. When the insertion rod (11) moves up and down in the inner limiting tube (4), it can drive the inner limiting tube (4) to rotate clockwise or counterclockwise. A plurality of arc-shaped splints (26) are provided on the circumferential side of the position-limiting inner tube (4), and the position-limiting inner tube (4) and the arc-shaped splints (26) are coordinated via a second linkage structure. When the position-limiting inner tube (4) rotates clockwise or counterclockwise, the plurality of arc-shaped splints (26) are driven to move horizontally in a direction away from or toward the position-limiting inner tube (4) at the same time. A mounting frame (18) is fixed on the support frame (3), a ring frame (19) sleeved on the outer circumference of the limiting inner tube (4) is fixed on the mounting frame (18), and a plurality of laser measuring instruments (20) for measuring the height and diameter of pipe fittings are mounted on the ring frame (19) at equal angles in a circumferential direction.

2. The automotive parts size detection device according to claim 1, characterized in that: The electric guide rail mechanism includes a bearing seat (27) fixed on the base (1), a screw rod (28) is rotatably mounted on the bearing seat (27), a motor (29) is fixed on the base (1), an output end of the motor (29) is connected to the screw rod (28) through a coupling to drive the screw rod (28) to rotate, an adjustment block (31) is fixed to the bottom of the support frame (3), a first limiting rod (30) is fixed on the bearing seat (27) and is respectively located on both sides of the screw rod (28), the screw rod (28) is inserted into a thread groove (32) opened on the adjustment block (31) and is threadedly engaged with the thread groove (32), and the first limiting rod (30) is inserted into the inside of a limiting hole (33) opened on the adjustment block (31).

3. The automobile parts size detection device according to claim 1, characterized in that: The number of the springs (9) is set to be multiple, and the multiple springs (9) are distributed circumferentially at equal angles between the fixed disc (7) and the movable disc (8), and the two ends of the spring (9) are respectively fixed to the fixed disc (7) and the movable disc (8).

4. The automobile parts size detection device according to claim 1, characterized in that: The oblique support assembly comprises a plurality of rectangular cylinders (12) fixed on the movable disc (8) at equal angles in the circumferential direction, wherein rectangular plates (15) are movably inserted into the rectangular cylinders (12), a fixing ring (13) is sleeved and installed on the outer circumference of the insertion rod (11), a hinged rod (14) is provided between the fixing ring (13) and the rectangular plate (15), and the two ends of the hinged rod (14) are hinged to the rectangular plate (15) and the fixing ring (13) respectively.

5. The automobile parts size detection device according to claim 1, characterized in that: Two second limiting rods (34) are vertically fixed on the movable disc (8). The second limiting rods (34) respectively penetrate the fixed disc (7) and the top frame (5) and are used for limiting the position of the movable disc (8) when it moves up and down.

6. The automobile parts size detection device according to claim 1, characterized in that: The first linkage structure comprises a spiral groove (16) provided on the insertion rod (11) and a ball (17) movably embedded and clamped on the inner wall of the limiting inner tube (4); the ball (17) is movably embedded and clamped in the spiral groove (16) and can roll along the track where the spiral groove (16) is located.

7. The automobile parts size detection device according to claim 1, characterized in that: The second linkage structure includes a fixed ring seat (21) fixed on the support frame (3), the limiting inner tube (4) is rotatably mounted on the inner side of the fixed ring seat (21), a turntable (22) is fixed on the limiting inner tube (4), a plurality of arc grooves (23) with equal angles and circumferential distribution are provided on the turntable (22), a clamping column (25) is movably clamped in the arc groove (23), a connecting rod (24) arranged to pass through the fixed ring seat (21) is fixed on the clamping column (25), and one end of the connecting rod (24) is fixed to the arc clamping plate (26).

8. The automobile parts size detection device according to claim 1, characterized in that: A soft rubber layer is fixedly adhered to the surface of the arc-shaped splint (26).

9. A detection method for an automobile parts size detection device, characterized in that: The following steps are involved: S1, putting the pipe fitting to be tested on the limiting inner pipe (4); S2, start the motor (29) to drive the screw (28) to rotate, and use the screw (28) and the thread groove (32) to drive the adjustment block (31) to move, thereby driving the support frame (3) to move so that the pipe fittings mounted on the limiting inner tube (4) are moved to the bottom of the movable disc (8); S3, start the cylinder (6) to drive the fixed disc (7) to move downward, and drive the movable disc (8) to move downward to contact the top of the pipe fitting, press the pipe fitting downward to cooperate with the support frame (3) to clamp the upper and lower ends of the pipe fitting; S4, the cylinder (6) drives the fixed disc (7) to continue to move downward to compress the spring (9) between the fixed disc (7) and the movable disc (8), and the movable disc (8) is stationary while the fixed disc (7) continues to move downward, that is, the insertion rod (11) continues to move downward in the sleeve (10) and cooperates to be inserted into the inner cavity of the limiting inner tube (4), and the ball (17) rolls in the spiral groove (16) track to drive the limiting inner tube (4) to rotate counterclockwise to drive the multiple arc-shaped splints (26) to move toward the side close to the limiting inner tube (4) at the same time, and the multiple arc-shaped splints (26) are synchronously gathered toward the limiting inner tube (4) to clamp the outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube (4) to correct the verticality of the pipe fittings; S5, starting the laser measuring instrument (20), and simultaneously measuring the height and diameter of the pipe fittings by using multiple laser measuring instruments (20), and obtaining the height and diameter dimension values of the pipe fittings.

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