Automobile part size detection device and detection method

Abstract

The invention relates to the technical field of automobile part detection devices, in particular to an automobile part size detection device and method, which comprises a base, a rack is fixed on the base, a bearing frame is arranged on the base, and the bearing frame is driven by an electric guide rail mechanism arranged on the base to move horizontally. A bearing frame is arranged on the rack, a limiting inner pipe used for sleeving installation of the pipe fittings is rotationally arranged on the bearing frame, a top frame is fixed to the rack, an air cylinder is fixed to the top frame, a fixed disc is fixed to an output piston rod of the air cylinder, and a movable disc used for pressing and fixing the tops of the pipe fittings is arranged below the fixed disc. According to the device, pipe fittings can be clamped and fixed, after perpendicularity calibration is conducted on the pipe fittings, size measurement can be directly conducted in cooperation with a laser measuring instrument, continuous operation can be conducted, multi-structure cooperation and distributed operation are not needed, and the device is simple in structure, convenient to operate and high in practicability. And the measurement efficiency and the size measurement accuracy are improved.

Description

Technical Field

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

[0002] In the field of automobile manufacturing, the dimensional accuracy of plastic and metal parts directly affects the assembly quality and safety of the whole vehicle. With the development of automobile lightweight and intelligent, the requirements for the efficiency and accuracy of parts size detection are increasing day by day. However, there are still many deficiencies in the existing technologies, which are specifically reflected in the following aspects: Traditionally, the detection of automobile parts size relies on operators to hold tools such as calipers and micrometers to measure item by item. This not only has low efficiency, but also is prone to measurement result deviation due to human factors (such as visual errors and inconsistent operations). Manual measurement is difficult to achieve full coverage, and the risks of missed inspection and misjudgment are significantly increased.

[0003] Currently, in order to reduce manual measurement errors, there are also automated devices for detecting the size of automobile parts. During detection, a fixed structure is mostly used to clamp and fix the automobile parts. After the automobile parts are clamped and fixed by the fixed structure, a measurement component can be combined to measure the automobile parts. For example, in some devices such as an automobile parts detection device disclosed in Patent CN218787815U, fixing plates are symmetrically and fixedly connected to the upper surface of a detection table, and screws are threadedly connected inside the fixing plates. One end of the screw is rotatably connected to an arc-shaped clamping plate, and the automobile parts are fixed by clamping them from both sides by the arc-shaped clamping plate. However, when fixing, it cannot ensure the perpendicularity of pipe-like parts. When the pipe-like parts are inclined, it will affect the accuracy of its measurement, and it still relies on step-by-step operations during fixing and measurement, resulting in limited efficiency.

[0004] Considering the problems of the existing technologies, there is an urgent need to develop an automobile parts size detection device with high integration and strong adaptability, which can achieve the purposes of adaptive clamping, correcting the perpendicularity during measurement, and intelligent data processing, so as to improve the detection efficiency and accuracy and reduce the production cost. Therefore, we provide an automobile parts size detection device and a detection method to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an automobile parts size detection device and a detection method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: An automotive parts size detection device, including a base, a frame is fixed on the base, a placement frame is arranged on the base, and the placement frame is driven to move horizontally by an electric guide rail mechanism arranged on the base. A limiting inner tube for sleeving and installing pipe-like parts is rotatably arranged on the placement 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-like parts is arranged below the fixed disc. The fixed disc and the movable disc are fixedly connected by a spring, and an inclined support assembly is arranged between the fixed disc and the movable disc. A sleeve is fixed at the center of the movable disc, and a plug rod fixedly connected to the output piston rod is inserted through and inside the sleeve. The plug rod is movably inserted inside the limiting inner tube, and the plug rod and the limiting inner tube are matched by a first linkage structure. When the plug rod moves up and down inside the limiting inner tube, it can drive the limiting inner tube to rotate clockwise or counterclockwise. A plurality of arc-shaped clamping plates are arranged on the circumferential side of the limiting inner tube, and the limiting inner tube and the arc-shaped clamping plates are matched by a second linkage structure. When the limiting inner tube rotates clockwise or counterclockwise, it will drive the plurality of arc-shaped clamping plates to horizontally move away from or close to the limiting inner tube at the same time.

[0007] An automotive parts size detection device as described above: An installation frame is fixed on the placement frame, a ring frame sleeved on the outer circumferential side of the limiting inner tube is fixed on the installation frame, and a plurality of laser measuring instruments for measuring the height and diameter of pipe-like parts are installed on the ring frame in an equiangular circumferential direction.

[0008] An automotive parts size detection device as described above: The electric guide rail mechanism includes a bearing seat fixed on the base, a lead screw is rotatably installed on the bearing seat, a motor is fixed on the base, and the output end of the motor is connected to the lead screw through a coupling to drive the lead screw to rotate. An adjustment block is fixed at the bottom of the placement frame, and first limiting rods are fixed on the bearing seat on both sides of the lead screw. The lead screw is inserted through and threadedly engaged with a threaded groove opened on the adjustment block, and the first limiting rod is inserted through a limiting hole opened on the adjustment block.

[0009] An automotive parts size detection device as described above: The number of the springs is set to be multiple, and the multiple springs are distributed in an equiangular circumferential direction between the fixed disc and the movable disc, and both ends of the spring are respectively fixed to the fixed disc and the movable disc.

[0010] An automobile parts size detection device as described above: The inclined support assembly includes a plurality of rectangular cylinders fixedly arranged circumferentially at equal angles on the movable disc. Rectangular plates are respectively movably inserted into the rectangular cylinders. A fixed ring is sleeved and installed on the outer periphery of the insertion rod. A hinge rod is arranged between the fixed ring and the rectangular plate, and both ends of the hinge rod are hinged to the rectangular plate and the fixed ring respectively.

[0011] An automobile parts size detection device as described above: Two second limit rods are vertically fixed on the movable disc. The second limit rods respectively penetrate through the fixed disc and the top frame for limiting when the movable disc moves up and down.

[0012] An automobile parts size detection device as described above: The first linkage structure includes a spiral groove formed on the insertion rod and a ball movably embedded and clamped on the inner wall of the limit inner tube. The ball is movably embedded and clamped in the spiral groove and can roll along the track where the spiral groove is located.

[0013] An automobile parts size detection device as described above: The second linkage structure includes a fixed ring seat fixed on the bearing frame. The limit inner tube is rotatably installed inside the fixed ring seat. A turntable is fixed on the limit inner tube. A plurality of arc grooves are formed on the turntable and are circumferentially distributed at equal angles. A clamping column is movably clamped in the arc groove. A connecting rod penetrating through the fixed ring seat is fixed on the clamping column, and one end of the connecting rod is fixed to the arc-shaped clamping plate.

[0014] An automobile parts size detection device as described above: A soft rubber layer is fixedly adhered to the surface of the arc-shaped clamping plate.

[0015] A detection method for an automobile parts size detection device includes the following steps: S1. First, sleeved the pipe-like parts to be detected on the limit inner tube; S2. Start the motor to drive the lead screw to rotate. Utilize the threaded cooperation between the lead screw and the threaded groove to drive the adjusting block to move, so as to drive the bearing frame to move, and move the pipe-like parts sleeved on the limit inner tube to directly below the movable disc; S3. Start the air cylinder to drive the fixed disc to move downward, drive the movable disc to move downward to contact the top end of the pipe-like parts, and press the pipe-like parts. Cooperate with the bearing frame to clamp and limit its upper and lower ends; S4. The air 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 is stationary while 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 limit inner tube. Drive the limit inner tube to rotate counterclockwise by the rolling of the ball in the spiral groove track, so as to drive a plurality of arc-shaped clamping plates to move simultaneously toward the side close to the limit inner tube. Clamp the outer periphery of the bottom end of the pipe-like parts sleeved on the limit inner tube by the synchronous gathering of a plurality of arc-shaped clamping plates toward the limit inner tube to correct the verticality of the pipe-like parts. S5. Start the laser measuring instrument, and simultaneously measure the height and diameter of the pipe fitting through multiple laser measuring instruments, and obtain the numerical values of the height and diameter dimensions of the pipe fitting.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The electric guide rail mechanism provided on the base drives the bearing frame to move horizontally. A limiting inner tube for sleeving and installing the pipe fitting is rotatably arranged on the bearing frame. By horizontally moving the bearing frame, the pipe fitting sleeved on the limiting inner tube can be conveyed. A top frame is fixed on the frame, and 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 fitting is arranged below the fixed disc. Starting the cylinder can drive the fixed disc to move downward to drive the movable disc to move downward so as to press and limit the top of the pipe fitting. An insertion rod penetrating and inserted inside the sleeve is fixed on the output piston rod. The insertion rod is movably inserted inside the limiting inner tube. The insertion rod and the limiting inner tube are matched through a first linkage structure. When the insertion rod moves up and down inside 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 a plurality of arc-shaped clamping plates to horizontally move away from or close to the limiting inner tube at the same time; When the present invention is in use, first, the pipe fitting to be detected is sleeved on the limiting inner tube, and the electric guide rail mechanism is used to drive the bearing frame to move so that the pipe fitting sleeved on the limiting inner tube moves directly below the movable disc; then start the cylinder to drive the fixed disc to move downward, drive the movable disc to move downward to contact the top of the pipe fitting to press the pipe fitting, and cooperate with the bearing frame to clamp and limit its upper and lower ends, so that the pipe fitting is preliminarily limited in the vertical direction. Then 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 is stationary while the fixed disc continues to move downward, that is, the insertion rod continues to move downward inside the sleeve and is inserted into the inner cavity of the limiting inner tube. By the rolling of the ball in the spiral groove track, the limiting inner tube is driven to rotate counterclockwise to drive a plurality of arc-shaped clamping plates to move simultaneously toward the side close to the limiting inner tube. By the synchronous gathering of the plurality of arc-shaped clamping plates toward the limiting inner tube, the outer circumference of the bottom end of the pipe fitting sleeved on the limiting inner tube is clamped to correct the verticality of the pipe fitting, so that after the pipe fitting is limited and fixed, the verticality is corrected to ensure that it is in a vertical state during measurement. Furthermore, start the laser measuring instrument, and simultaneously measure the height and diameter of the pipe fitting through multiple laser measuring instruments, and obtain the numerical values of the height and diameter dimensions of the pipe fitting; Therefore, the present invention can clamp and fix the pipe fitting, calibrate the verticality, and then directly measure the size in cooperation with the laser measuring instrument. Moreover, the clamping and fixing of the fitting, the verticality correction, and the size measurement can be carried out continuously, without the cooperation of multiple structures and distributed operations, improving the measurement efficiency, and ensuring the verticality of the pipe parts during measurement, thereby improving the accuracy of the size measurement of the pipe automotive parts. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure from the first perspective of a device for detecting the dimensions of automotive parts.

[0018] Figure 2 It is a schematic diagram of the overall structure from the second perspective of a device for detecting the dimensions of automotive parts.

[0019] Figure 3 It is Figure 1 A schematic diagram of the decomposed partial structure.

[0020] Figure 4 It is Figure 3 A schematic diagram of the structure from another perspective.

[0021] Figure 5 It is Figure 3 A schematic diagram of the decomposed partial structure based on

[0022] Figure 6 It is a schematic diagram of the structure of the top frame, fixed disc, movable disc, and spring connection in a device for detecting the dimensions of automotive parts.

[0023] Figure 7 It is Figure 6 A schematic diagram of the structure from another perspective.

[0024] Figure 8 It is Figure 6 An exploded schematic diagram of

[0025] Figure 9 It is Figure 8 A schematic diagram of the further decomposed partial structure based on

[0026] Figure 10 It is a schematic diagram of the partial structure of a device for detecting the dimensions of automotive parts.

[0027] 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. Insert rod; 12. Rectangular cylinder; 13. Fixed ring; 14. Hinge 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 post; 26. Arc-shaped clamping plate; 27. Bearing seat; 28. Lead screw; 29. Motor; 30. First limiting rod; 31. Adjusting block; 32. Thread groove; 33. Limiting hole; 34. Second limiting rod. Specific embodiments

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Please refer to Figures 1 to 10 , as an embodiment of the present invention, an automobile parts size detection device and detection method, including a base 1, a frame 2 is fixed on the base 1, a bearing frame 3 is arranged on the base 1, and the bearing frame 3 is driven to move horizontally by an electric guide rail mechanism arranged on the base 1. A limiting inner tube 4 for sleeving and installing pipe fittings is rotatably arranged on the bearing 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, and a movable disc 8 for pressing and fixing the top of the pipe fitting is arranged below the fixed disc 7. The fixed disc 7 and the movable disc 8 are fixedly connected by a spring 9, and an inclined support assembly is arranged between the fixed disc 7 and the movable disc 8. A sleeve 10 is fixed at the center of the movable disc 8, and a plug rod 11 fixedly connected to the output piston rod is inserted through and inside the sleeve 10; The plug rod 11 is movably inserted inside the limiting inner tube 4, and the plug rod 11 and the limiting inner tube 4 are matched by a first linkage structure. When the plug rod 11 moves up and down inside the limiting inner tube 4, it can drive the limiting inner tube 4 to rotate clockwise or counterclockwise; A plurality of arc-shaped clamping plates 26 are arranged on the circumferential side of the limiting inner tube 4, and the limiting inner tube 4 and the arc-shaped clamping plates 26 are matched by a second linkage structure. When the limiting inner tube 4 rotates clockwise or counterclockwise, it will drive the plurality of arc-shaped clamping plates 26 to horizontally move away from or close to the limiting inner tube 4 at the same time.

[0030] In this embodiment, during use, first, the pipe fitting to be detected is sleeved on the limiting inner pipe 4. The electric guide rail mechanism drives the bearing frame 3 to move, so that the pipe fitting sleeved on the limiting inner pipe 4 moves to directly below the movable disc 8. Then, the air cylinder 6 is started to drive the fixed disc 7 to move downward, driving the movable disc 8 to move downward to contact the top end of the pipe fitting, and pressing the pipe fitting. The bearing frame 3 clamps and limits the upper and lower ends of the pipe fitting, so that the pipe fitting is preliminarily limited in the vertical direction. Then, the air 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 remains stationary while the fixed disc 7 continues to move downward, that is, the plug rod 11 continues to move downward in the sleeve 10 and is inserted into the inner cavity of the limiting inner pipe 4 in cooperation. The plug rod 11 and the limiting inner pipe 4 are matched through a first linkage structure. When the plug rod 11 moves up and down in the limiting inner pipe 4, it can drive the limiting inner pipe 4 to rotate clockwise or counterclockwise. The limiting inner pipe 4 and the arc-shaped clamping plate 26 are matched through a second linkage structure. When the limiting inner pipe 4 rotates clockwise or counterclockwise, it will drive a plurality of arc-shaped clamping plates 26 to horizontally move away from or close to the limiting inner pipe 4 at the same time, so as to drive a plurality of arc-shaped clamping plates 26 to move toward one side close to the limiting inner pipe 4 at the same time. By the synchronous gathering of the plurality of arc-shaped clamping plates 26 toward the limiting inner pipe 4, the outer circumference of the bottom end of the pipe fitting sleeved on the limiting inner pipe 4 is clamped to correct the perpendicularity of the pipe fitting, so that after the pipe fitting is limited and fixed, the perpendicularity is corrected to ensure that it is in a vertical state during measurement. Furthermore, the laser measuring instrument 20 is started, and the height and diameter of the pipe fitting are measured simultaneously by a plurality of laser measuring instruments 20. The height and diameter dimension values of the pipe fitting are measured and obtained.

[0031] As a further solution of the present invention, an installation frame 18 is fixed on the bearing frame 3, and a ring frame 19 sleeved on the outer peripheral side of the limiting inner pipe 4 is fixed on the installation frame 18. A plurality of laser measuring instruments 20 for measuring the height and diameter of the pipe fitting are installed on the ring frame 19 at equal angles in the circumferential direction, and the model thereof is IMPULSE 200XL laser distance measuring / height measuring instrument.

[0032] In this embodiment, through the cooperation of a plurality of laser measuring instruments 20, data such as the height, horizontal distance, and pitch angle of the pipe fitting sleeved on the limiting inner pipe 4 can be directly measured. Thus, through a three-dimensional measurement system, such as being extended to X / Y / Z three-dimensional coordinate measurement by combining with the MapStar option, the data of the diameter of the pipe fitting can be indirectly measured.

[0033] As a further solution of the present invention, the electric guide rail mechanism includes a bearing seat 27 fixed on the base 1. A lead screw 28 is rotatably installed 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 lead screw 28 through a coupling to drive the lead screw 28 to rotate. A regulating block 31 is fixed at the bottom of the support frame 3. First limiting rods 30 are fixed on the bearing seat 27 and located on both sides of the lead screw 28 respectively. The lead screw 28 is inserted through a threaded groove 32 opened on the regulating block 31 and is in threaded cooperation with the threaded groove 32. The first limiting rods 30 are inserted through a limiting hole 33 opened on the regulating block 31.

[0034] In this embodiment, the motor 29 is electrically connected to an external power supply through a wire. The motor 29 is started to drive the lead screw 28 to rotate. The lead screw 28 is inserted through a threaded groove 32 opened on the regulating block 31 and is in threaded cooperation with the threaded groove 32. By using the threaded cooperation between the lead screw 28 and the threaded groove 32, the regulating block 31 is driven to move, so as to drive the support frame 3 to move, and the pipe fittings sleeved on the limiting inner pipe 4 are moved to directly below the movable disc 8.

[0035] As a further solution of the present invention, the number of the springs 9 is set to be multiple. The multiple springs 9 are circumferentially distributed at equal angles between the fixed disc 7 and the movable disc 8. Both ends of the springs 9 are respectively fixed to the fixed disc 7 and the movable disc 8.

[0036] In this embodiment, through the circumferential distribution of the multiple springs 9 at equal angles between the fixed disc 7 and the movable disc 8, the connection between the fixed disc 7 and the cylinder 6 can be realized by using the springs 9, and at the same time, the elastic telescopic characteristic of the springs 9 can ensure the mutual movement between the fixed disc 7 and the movable disc 8.

[0037] As a further solution of the present invention, the inclined support assembly includes a plurality of rectangular cylinders 12 circumferentially fixed on the movable disc 8 at equal angles. Rectangular plates 15 are respectively inserted into the rectangular cylinders 12 in a movable manner. A fixing ring 13 is sleeved on the outer periphery of the insertion rod 11. A hinge rod 14 is arranged between the fixing ring 13 and the rectangular plate 15. Both ends of the hinge rod 14 are respectively hinged to the rectangular plate 15 and the fixing ring 13.

[0038] In this embodiment, both ends of the hinge rod 14 are respectively hinged to the rectangular plate 15 and the fixing ring 13. The rectangular plate 15 can be slidably inserted into the rectangular cylinder 12. The movable disc 8 can be supported through the hinge rod 14. At the same time, the sliding of the rectangular plate 15 in the rectangular cylinder 12 can drive the hinge rod 14 to rotate, so as to prevent the movable disc 8 from shifting in position when the fixed disc 7 and the movable disc 8 are displaced relative to each other, and ensure the stability.

[0039] 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 respectively penetrate through the fixed disc 7 and the top frame 5 for limiting the up and down movement of the movable disc 8.

[0040] In this embodiment, the second limiting rod 34 is respectively arranged to penetrate the fixed disc 7 and the top frame 5. When the movable disc 8 is squeezed to move 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.

[0041] 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.

[0042] 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, 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 track of the spiral groove 16 to drive the limiting inner tube 4 to rotate counterclockwise to drive the multiple arc-shaped clamping plates 26 to move to the side close to the limiting inner tube 4 at the same time, and the multiple arc-shaped clamping plates 26 are moved to the limiting inner tube 4 through the multiple arc-shaped clamping plates 26. The outer periphery of the bottom end of the pipe fittings sleeved on the limiting inner tube 4 is synchronously gathered to be clamped 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 pulled out 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, so as 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 fixation of the pipe fittings, and restore the limiting inner tube 4 to the initial rotation angle, which is convenient for the next measurement.

[0043] 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.

[0044] 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, 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, 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.

[0045] In this embodiment, when the limiting inner tube 4 rotates, it drives the clamping post 25 to slide in the slideway where the arc-shaped groove 23 is located, thereby driving the connecting rod 24 passing through the fixed ring seat 21 to move horizontally, and further driving the arc-shaped clamping plate 26 to move horizontally. By synchronously moving and gathering multiple arc-shaped clamping plates 26, the bottom end of the pipe fitting can be clamped to correct the perpendicularity of the pipe fitting.

[0046] As a further solution of the present invention, a soft rubber layer is fixedly adhered to the surface of the arc-shaped clamping plate 26.

[0047] In this embodiment, when multiple arc-shaped clamping plates 26 synchronously move and gather to clamp the bottom end of the pipe fitting, the soft rubber layer with soft texture can reduce the structural damage to the surface of the pipe fitting during clamping.

[0048] The working principle of the invention is as follows: during use, first, the pipe fitting to be detected is sleeved on the limiting inner tube 4, and the electric guide rail mechanism is used to drive the bearing frame 3 to move, so that the pipe fitting sleeved on the limiting inner tube 4 moves directly below the movable disc 8; then, the air cylinder 6 is started to drive the fixed disc 7 to move downward, driving the movable disc 8 to move downward to contact the top end of the pipe fitting, pressing the pipe fitting, and cooperating with the bearing frame 3 to clamp and limit its upper and lower ends, so that the pipe fitting is initially limited in the vertical direction. Then, the air cylinder 6 drives the fixed disc 7 to continue moving downward to compress the spring 9 between the fixed disc 7 and the movable disc 8. The movable disc 8 remains 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 in cooperation. The insertion rod 11 and the limiting inner tube 4 are cooperated 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 clamping plate 26 are cooperated 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 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 simultaneously toward one side close to the limiting inner tube 4. By synchronously gathering multiple arc-shaped clamping plates 26 toward the limiting inner tube 4, the outer periphery of the bottom end of the pipe fitting sleeved on the limiting inner tube 4 is clamped to correct the perpendicularity of the pipe fitting, so that after the pipe fitting is limited and fixed, the perpendicularity is corrected to ensure that it is in a vertical state during measurement. Then, the laser measuring instrument 20 is started, and the height and diameter of the pipe fitting are measured simultaneously through multiple laser measuring instruments 20. The height and diameter dimension values of the pipe fitting are measured. After the measurement is completed, the air cylinder 6 drives the fixed disc 7 and the movable disc 8 to move upward to release the fixation of the upper end of the pipe fitting. The insertion rod 11 disengages from the inner tube 4, and at the same time, the limiting inner tube 4 flips and resets, and drives multiple arc-shaped clamping plates 26 to move outward from the limiting inner tube 4 to release the clamping and fixation of the pipe fitting. The electric guide rail is used to drive the bearing frame 3 to move so that the pipe fitting is removed from below the movable disc 8, thereby removing the detected pipe fitting.

[0049] The above embodiments are exemplary rather than restrictive, so all technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are encompassed within the present invention.

Claims

1. An automotive parts size detection device, comprising a base (1), and a frame (2) is fixed on the base (1), characterized in that, A bearing frame (3) is arranged on the base (1), and the bearing frame (3) is driven to move horizontally by an electric guide rail mechanism arranged on the base (1). A limiting inner tube (4) for sleeving and installing pipe fittings is rotatably arranged on the bearing frame (3). A top frame (5) is fixed on the machine frame (2), and 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 fitting is arranged below the fixed disc (7). The fixed disc (7) and the movable disc (8) are fixedly connected by a spring (9). An inclined support assembly is arranged between the fixed disc (7) and the movable disc (8). A sleeve (10) is fixed at the center of the movable disc (8), and a plug rod (11) fixedly connected to the output piston rod is inserted through and arranged inside the sleeve (10). The plug rod (11) is movably inserted inside the limiting inner tube (4), and the plug rod (11) and the limiting inner tube (4) are matched by a first linkage structure. When the plug rod (11) moves up and down inside the limiting inner tube (4), the limiting inner tube (4) can be driven to rotate clockwise or counterclockwise. A plurality of arc-shaped clamping plates (26) are arranged on the circumferential side of the limiting inner tube (4), and the limiting inner tube (4) and the arc-shaped clamping plates (26) are matched by a second linkage structure. When the limiting inner tube (4) rotates clockwise or counterclockwise, a plurality of arc-shaped clamping plates (26) are driven to horizontally move away from or close to the limiting inner tube (4) simultaneously.

2. The dimension detection device for automotive parts according to claim 1, characterized in that, An installation frame (18) is fixed on the bearing frame (3), and an annular frame (19) sleeved on the outer circumferential side of the limiting inner tube (4) is fixed on the installation frame (18). A plurality of laser measuring instruments (20) for measuring the height and diameter of pipe fittings are installed on the annular frame (19) at equal angles in the circumferential direction.

3. The dimension detection device for automotive parts according to claim 1, characterized in that, The electric guide rail mechanism includes a bearing seat (27) fixed on the base (1). A lead screw (28) is rotatably installed 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 lead screw (28) through a coupling to drive the lead screw (28) to rotate. A regulating block (31) is fixed at the bottom of the bearing frame (3). First limiting rods (30) located on both sides of the lead screw (28) are fixed on the bearing seat (27). The lead screw (28) is inserted through a threaded groove (32) opened on the regulating block (31) and is in threaded cooperation with the threaded groove (32). The first limiting rod (30) is inserted through a limiting hole (33) opened on the regulating block (31).

4. An automotive parts dimension detection device according to claim 1, characterized in that, The number of the springs (9) is set to be multiple. The multiple springs (9) are distributed at equal angles in the circumferential direction between the fixed disc (7) and the movable disc (8). Both ends of the spring (9) are respectively fixed to the fixed disc (7) and the movable disc (8).

5. The dimension detection device for an automotive part according to claim 1, wherein, The diagonal support assembly includes a plurality of rectangular cylinders (12) fixedly circumferentially arranged at equal angles on the movable disc (8). Rectangular plates (15) are respectively movably inserted into the rectangular cylinders (12). A fixing ring (13) is sleeved and installed on the outer periphery of the insertion rod (11). An articulated rod (14) is arranged between the fixing ring (13) and the rectangular plate (15). The two ends of the articulated rod (14) are respectively hinged to the rectangular plate (15) and the fixing ring (13).

6. The size detection device for an automotive part 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 through the fixed disc (7) and the top frame (5) for limiting when the movable disc (8) moves up and down.

7. An automobile parts dimension detection device according to claim 1, characterized in that, The first linkage structure includes a spiral groove (16) formed 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.

8. An automotive parts size detection device according to claim 1, characterized in that, The second linkage structure includes a fixing ring seat (21) fixed on the bearing frame (3). The limiting inner tube (4) is rotatably installed inside the fixing ring seat (21). A turntable (22) is fixed on the limiting inner tube (4). A plurality of arc grooves (23) are formed on the turntable (22) and are circumferentially distributed at equal angles. A clamping column (25) is movably clamped in the arc groove (23). A connecting rod (24) penetrating through the fixing ring seat (21) is fixed on the clamping column (25). One end of the connecting rod (24) is fixed to the arc-shaped clamping plate (26).

9. The dimension detection device for automotive parts according to claim 1, characterized in that, A soft rubber layer is fixedly adhered to the surface of the arc-shaped clamping plate (26).

10. A detection method for a detection device of automobile accessory dimensions, characterized in that, It includes the following steps: S1, sleeving the pipe fittings to be detected on the limiting inner tube (4); S2, starting the motor (29) to drive the screw rod (28) to rotate, and using the screw-threaded fit between the screw rod (28) and the threaded groove (32) to drive the adjusting block (31) to move so as to drive the bearing frame (3) to move, and moving the pipe fittings sleeved on the limiting inner tube (4) to directly below the movable disc (8); S3, starting the air cylinder (6) to drive the fixed disc (7) to move downward, driving the movable disc (8) to move downward to contact the top end of the pipe fittings, pressing the pipe fittings, and cooperating with the bearing frame (3) to clamp and limit the upper and lower ends thereof; S4, the air 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 is inserted into the inner cavity of the limiting inner tube (4) in cooperation. The ball (17) rolls in the spiral groove (16) track to drive the limiting inner tube (4) to rotate counterclockwise, so as to drive a plurality of arc-shaped clamping plates (26) to simultaneously move toward the side close to the limiting inner tube (4). The plurality of 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 fittings sleeved on the limiting inner tube (4) to correct the perpendicularity of the pipe fittings. S5. Start the laser measuring instrument (20), and simultaneously measure the height and diameter of the pipe fitting through multiple laser measuring instruments (20) to obtain the numerical values of the height and diameter dimensions of the pipe fitting.

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