A laser scanning-based size detection device for automotive interior parts

Abstract

This invention discloses a laser scanning-based automotive interior component dimensional inspection device, relating to the field of automotive interior component inspection. It includes an inspection platform with first electric push rods fixedly mounted at both ends. The top of a negative pressure adsorption mechanism is used to adsorb and fix the smooth surface of the automotive interior component. A pneumatic roller adjustment mechanism connected to an air supply pipe is also provided on the support plate. This laser scanning-based automotive interior component dimensional inspection device achieves stable and flexible fixation of the smooth surface of the interior component using a negative pressure adsorption mechanism, and completes contactless lifting of the workpiece with the pneumatic roller adjustment mechanism. The second electric push rod drives the support plate to achieve automatic and stable workpiece displacement, eliminating the need for manual adjustment and preventing collisions or scratches between the interior component and the inspection platform, thus protecting the product's appearance integrity. It comprehensively covers the entire inspection area of ​​long interior components, ensuring accurate three-dimensional dimensional data acquisition.

Description

Technical Field

[0001] This invention relates to the field of automotive interior parts inspection technology, specifically to a laser scanning-based automotive interior parts size inspection device. Background Technology

[0002] With social development and technological progress, the automotive industry has also developed rapidly. In the process of automobile production and processing, a large number of interior parts are needed. These interior parts need to be inspected during production. In particular, laser detectors can be used to assist in the inspection of automotive interior parts. However, most automotive parts inspection tools are inefficient in the inspection process.

[0003] The prior art (Chinese patent application number CN202610141024.1, application date 2026.02.02) discloses a laser measuring instrument for automotive parts dimensions. This device, through the cooperation of a lockless motor, worm gear, worm wheel, and V-shaped rod in the angle adjustment assembly, facilitates continuous and precise fine-tuning of the laser 3D measuring instrument's angle, improving the convenience and accuracy of angle adjustment. This allows for rapid adaptation to production line product specification adjustments without disassembling bolts. Furthermore, the cooperation of the indicator rod and angle dial facilitates intuitive observation and reading of the current measured angle value, improving the visualization and calibration efficiency of angle adjustment, thereby enabling precise angle positioning and rapid calibration. Ultimately, it solves the problem that existing laser 3D measuring instruments require disassembling and reassembling bolts for angle adjustment, improving the efficiency and adaptability of the measuring instrument's angle adjustment. The prior art (Chinese patent application number CN201910824897.2, application date 2019.09.02) discloses an automatic workpiece 3D dimension detection system and method based on laser scanning. This device employs a CNC three-dimensional moving platform to achieve movement of the workpiece relative to the laser sensor in the X-axis direction, and movement of the laser line scanning sensor in the Y and Z-axis directions, realizing full-process dynamic measurement. This replaces manual movement inspection, improving inspection efficiency. Finally, one can refer to the prior art (Chinese patents with application numbers CN202122723535.X and 2021.11.08) which discloses a tooling for inspecting the dimensions of automotive interior parts. This tooling utilizes a rotating motor, a bidirectional lead screw, a first slider, and a first... The combined use of the clamping plate, laser rangefinder, and second clamping plate allows for easy inspection of the interior trim. Pulling the second clamping plate moves the trim, placing the interior trim to be inspected on the upper surface of the fixed plate, releasing the second clamping plate, and using a retraction spring to move the movable block. Starting the rotary motor then drives the bidirectional lead screw to rotate, causing the first slider to move. This, in turn, causes the first and second clamping plates to clamp the interior trim from multiple angles. The laser rangefinder measures the distance between the two first clamping plates and the two second clamping plates, making the inspection of the interior trim more convenient.

[0004] While existing laser scanning inspection devices can improve the inspection efficiency of automotive interior parts to some extent, they still have significant drawbacks. When inspecting the dimensions of long automotive interior parts, a conveyor belt can be used to transport the parts for measurement. However, this method has its drawbacks. The conveyor belt is prone to vibration during operation, which can cause the interior parts to slip and shift, resulting in misalignment of the workpiece positioning reference and severely affecting the dimensional inspection accuracy of laser scanning. In addition, traditional inspection platforms have single and fixed compatibility specifications and inspection ranges, making them incompatible with interior parts of different lengths. The placement of the interior parts can only be adjusted manually. Manual adjustment is not only tedious, time-consuming, and labor-intensive, but it also easily causes the interior parts to collide and scratch with the inspection platform, which can damage the appearance of the interior parts and affect product quality.

[0005] Therefore, we propose a laser scanning-based device for detecting the dimensions of automotive interior parts to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a laser scanning-based automotive interior component dimensional inspection device to address the shortcomings of existing market inspection devices that use conveyor belts to transport long automotive interior components for dimensional inspection. These devices often suffer from drawbacks, such as vibrations during conveyor belt operation that can cause slippage and positional shifts in the interior components, leading to misalignment of the workpiece positioning reference and severely impacting the accuracy of laser scanning. Furthermore, traditional inspection platforms have limited and fixed specifications and inspection ranges, making them incompatible with interior components of varying lengths. This necessitates manual adjustment of the components' placement, which is cumbersome, time-consuming, and labor-intensive. Manual adjustment also increases the risk of collisions and scratches between the interior components and the inspection platform, potentially damaging the appearance and affecting product quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a laser scanning-based automotive interior component size detection device, comprising a detection platform, wherein first electric push rods are fixedly installed at both ends of the detection platform, and a support detection frame is fixedly connected to the output end of the first electric push rods, the support detection frame being slidably disposed on the outside of the detection platform; an adjustment component is installed on the top of the support detection frame, and a laser scanning component is connected to the actuating end of the adjustment component; a second electric push rod is fixedly installed on the back of the detection platform, the output end of the second electric push rod being fixedly connected to a support plate, the support plate being slidably disposed in a movable groove opened in the detection platform; an air supply connection pipe is connected to the bottom of the support plate, and a negative pressure adsorption mechanism is provided on the top of the support plate, the top end of the negative pressure adsorption mechanism being used to adsorb and fix the smooth surface of the automotive interior component; a pneumatic roller adjustment mechanism connected to the air supply connection pipe is also provided on the support plate.

[0008] Preferably, the adjusting component includes a drive motor and a threaded rod. The drive motor is fixedly installed on the side wall of the support detection frame. The output end of the drive motor is coaxially and fixedly connected to the threaded rod. The threaded rod is threadedly connected to the outer shell of the laser scanning component to drive the laser scanning component to move longitudinally along the support detection frame.

[0009] Preferably, the gas supply connection pipe is used to connect to an external air pump, and the outer end of the gas supply connection pipe is connected to a first gas supply pipe, a second gas supply pipe and a third gas supply pipe respectively; the first gas supply pipe is connected to a negative pressure adsorption mechanism, and the second gas supply pipe and the third gas supply pipe are both connected to a pneumatic roller adjustment mechanism.

[0010] Preferably, the negative pressure adsorption mechanism includes a first receiving cylinder connected to the top end of the first air supply pipe, a piston rod is slidably disposed inside the first receiving cylinder, and an adsorption plate is fixedly disposed on the top of the piston rod. The top surface of the adsorption plate is used to adhere to and adsorb the smooth surface of the automotive interior parts.

[0011] Preferably, the piston rod has an internal air passage, the first air supply pipe is connected to the adsorption chamber of the adsorption plate through the air passage, and a return spring is provided between the outer side of the piston rod and the first receiving cylinder.

[0012] Preferably, the pneumatic roller adjustment mechanism includes a second receiving cylinder connected to the second air supply pipe, a roller bracket slidably disposed on the top of the second receiving cylinder, an upper piston disc fixed at the bottom of the roller bracket, and a rotating roller rotatably mounted on the top of the roller bracket; one end of the roller bracket extending into the second receiving cylinder is elastically connected to the interior of the second receiving cylinder via a connecting spring; the pneumatic roller adjustment mechanism also includes a telescopic air cylinder connected to the third air supply pipe, one end of the telescopic air cylinder being fixed to the inside of the detection platform, and an auxiliary roller being fixedly connected to the extended end of the telescopic air cylinder.

[0013] Preferably, the rotating roller and the auxiliary roller are at the same horizontal height and move in opposite directions; the top surface of the moving groove is lower than the top surface of the adsorption plate.

[0014] Preferably, the interior of the second receiving cylinder is divided into an upper cavity and a lower cavity, with an upper piston disc slidably disposed in the upper cavity and a lower piston disc slidably disposed in the lower cavity, the upper piston disc and the lower piston disc being coaxially arranged.

[0015] Preferably, the lower cavity is connected to a fixed cylinder via a fitting tube, and the fixed cylinder is fixedly installed on the top of the support plate; a push rod is slidably arranged inside the fixed cylinder, and the top of the push rod is elastically connected to the fixed cylinder via a fitting spring, and the top of the push rod is used to support the bottom of the automotive interior parts.

[0016] Preferably, the rotating roller moves in the opposite direction to the lifting direction of the push rod, the top end of the push rod is made of a flexible contact material, and the top end of the push rod flexibly fits against the bottom surface of the automotive interior parts.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This laser scanning-based automotive interior part size inspection device uses a negative pressure adsorption mechanism to achieve stable and flexible fixation of the smooth surface of the interior part, and a pneumatic roller adjustment mechanism to achieve non-contact lifting of the workpiece. The second electric push rod drives the support plate to achieve automatic and stable displacement of the workpiece, eliminating the need for manual adjustment and avoiding collisions or scratches between the interior part and the inspection platform, thus protecting the integrity of the product's appearance. At the same time, it eliminates the conveyor belt structure that is prone to vibration. The inspection frame and adjustment components can drive the laser scanning part to achieve horizontal and vertical dual-dimensional position adjustment, fully covering the entire inspection area of ​​long interior parts and ensuring accurate three-dimensional size data acquisition. 1. The negative pressure adsorption mechanism flexibly adsorbs and fixes the smooth surface of the interior parts, keeping the workpiece at a constant reference during the scanning stage, preventing slippage and shaking, and significantly improving the dimensional detection accuracy of laser scanning; the transfer method, which combines pneumatic lifting and roller support, ensures that the workpiece has no rigid contact with the detection platform during transfer, preventing bumps and scratches throughout the process, and protecting the appearance and structural quality of the interior parts; compared with the traditional conveyor belt method, there is no mechanical vibration interference, the workpiece transfer is smooth and stable, and there will be no deviation or off-tracking, eliminating the impact of vibration on the scanning data, and is especially suitable for high-precision inspection of precision long interior parts such as dashboards and door panels.

[0018] 2. The support frame, together with the adjustment components, enables precise multi-directional adjustment of the laser-scanned parts. The support plate drives the workpiece to automatically move and continue scanning, requiring no manual intervention throughout the process, simplifying the operation process and shortening the inspection cycle. The device adopts integrated air circuit control, with smooth linkage between negative pressure adsorption and pneumatic roller adjustment. The mechanism operates stably and reliably, adapting to the continuous and batch inspection needs of production lines, effectively reducing manual labor intensity and improving overall inspection efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the laser scanning component of the present invention; Figure 4 This is a bottom view of the support plate structure of the present invention; Figure 5 This is a schematic diagram of the main structure of the first receiving cylinder of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the first receiving cylinder of the present invention; Figure 7 For the present invention Figure 4 Enlarged cross-sectional structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the main cross-sectional structure of the second receiving cylinder of the present invention; Figure 9 This is a schematic diagram of the main cross-sectional structure of the fixed cylinder of the present invention; Figure 10 This is a side view schematic diagram of the auxiliary roller structure of the present invention.

[0020] In the diagram: 1. Detection platform; 2. First electric push rod; 3. Supporting detection frame; 4. Adjusting component; 5. Laser scanning component; 6. Second electric push rod; 7. Support plate; 8. Moving groove; 9. Gas supply connection pipe; 91. First gas supply pipe; 92. Second gas supply pipe; 93. Third gas supply pipe; 10. First receiving cylinder; 11. Piston rod; 111. Air passage; 12. Adsorption plate; 13. Return spring; 14. Second receiving cylinder; 141. Upper cavity; 142. Lower cavity; 15. Roller bracket; 151. Connecting spring; 16. Upper piston plate; 161. Lower piston plate; 17. Rotating roller; 18. Matching pipe; 19. Fixed cylinder; 20. Push rod; 201. Matching spring; 21. Telescopic air cylinder; 22. Auxiliary roller. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-10 The present invention provides the following technical solution: a laser scanning-based device for detecting the dimensions of automotive interior parts.

[0023] Example 1: To facilitate the inspection and processing of automotive interior parts, please refer to the attached document. Figure 1 - Appendix Figure 6The automotive interior parts dimensional inspection device includes an inspection platform 1. First electric push rods 2 are fixedly installed at both ends of the inspection platform 1. A support inspection frame 3 is fixedly connected to the output end of the first electric push rod 2 and slidably disposed on the outside of the inspection platform 1. An adjustment component 4 is installed on the top of the support inspection frame 3, and a laser scanning component 5 is connected to the actuating end of the adjustment component 4. A second electric push rod 6 is fixedly installed on the back of the inspection platform 1, and its output end is fixedly connected to a support plate 7. The support plate 7 slidably disposed within a moving groove 8 opened in the inspection platform 1. An air supply connection pipe 9 is connected to the bottom of the support plate 7, and a negative pressure adsorption mechanism is installed on the top of the support plate 7. The top of the negative pressure adsorption mechanism is used to adsorb and fix the smooth surface of the automotive interior parts. The adjustment component 4 includes a drive motor and a threaded rod. The drive motor is fixedly installed on the side wall of the support inspection frame 3, and its output end is coaxially fixed with the threaded rod. The connection is as follows: the threaded rod is threadedly connected to the outer shell of the laser scanning component 5 to drive the laser scanning component 5 to move longitudinally along the support detection frame 3; the air supply connection pipe 9 is used to connect to an external air pump, and the outer end of the air supply connection pipe 9 is respectively connected to a first air supply pipe 91 made of flexible hose, a second air supply pipe 92 made of flexible hose, and a third air supply pipe 93 made of flexible hose; the first air supply pipe 91 is connected to a negative pressure adsorption mechanism, which includes a first receiving cylinder 10 connected to the top end of the first air supply pipe 91, a piston rod 11 is slidably arranged inside the first receiving cylinder 10, and an adsorption plate 12 is fixedly arranged on the top of the piston rod 11. The top surface of the adsorption plate 12 is used to adhere to and adsorb the smooth surface of the automotive interior parts; an air passage 111 is opened inside the piston rod 11, and the first air supply pipe 91 is connected to the adsorption cavity of the adsorption plate 12 through the air passage 111. A return spring 13 is arranged between the outer side of the piston rod 11 and the first receiving cylinder 10.

[0024] When inspecting long automotive interior parts, the process mainly consists of initial inspection and moving inspection. The interior part is placed on top of the moving groove 8, ensuring its width is greater than the groove 8. At this point, the smooth bottom surface of the interior part contacts the top surface of the adsorption plate 12. An external air pump then operates, creating negative pressure for air intake. This allows gas to flow through the connecting pipe 9 and the first air supply pipe 91, with one end of the first air supply pipe 91 acting on the piston rod 11 and the air passage 111. Since the air passage 111 is connected to the adsorption plate 12, the adsorption plate 12 stably adsorbs and fixes the interior part. The control system then moves the first electric push rod 2 and the support inspection frame 3, causing the support inspection frame 3 to drive the laser scanning component 5 to perform laser scanning on the interior part. The laser scanning component 5 uses laser triangulation and line laser scanning principles to scan the surface of the interior part. Non-contact 3D dimensional acquisition: The laser scanning component 5 has a built-in laser emission module that projects a continuous linear laser beam onto the surface of the interior trim part to be tested. After the laser beam illuminates the curved surface, contour, and key dimensions of the interior trim part, it is reflected. The position and deformation information of the reflected laser are captured by the image acquisition unit inside the scanning component. The control system is based on a laser triangulation algorithm to convert the optical signal into 3D coordinate point cloud data of the workpiece surface. During the inspection process, the laser scanning component 5 moves laterally with the support inspection frame 3 and is driven by the adjustment component 4 to achieve longitudinal position fine adjustment, which can cover the entire inspection area of ​​long interior trim parts. The acquired point cloud data is compared with the preset standard model in real time, and the dimensional deviation and contour error are automatically calculated to complete the high-precision dimensional inspection and qualification judgment of the automotive interior trim parts, thereby facilitating the inspection process. Furthermore, the adjustment component 4 can drive the laser scanning component 5 to slide inside the support inspection frame 3, thereby facilitating the longitudinal movement of the laser scanning component 5, at which point the preliminary inspection of the automotive interior trim parts can be completed.

[0025] Example 2: To facilitate the inspection and processing of interior trim parts of different lengths and avoid issues such as collisions, misalignment, or damage, please refer to the attached document. Figure 1 Appendix Figure 2 and attached Figure 6 - Appendix Figure 10The support plate 7 is also equipped with a pneumatic roller adjustment mechanism connected to the air supply connection pipe 9; the pneumatic roller adjustment mechanism includes a second receiving cylinder 14 connected to the second air supply pipe 92, a roller bracket 15 slidably mounted on the top of the second receiving cylinder 14, an upper piston disc 16 fixed at the bottom of the roller bracket 15, and a rotating roller 17 rotatably mounted on the top of the roller bracket 15; one end of the roller bracket 15 extending into the second receiving cylinder 14 is elastically connected to the interior of the second receiving cylinder 14 through a connecting spring 151; the pneumatic roller adjustment mechanism also includes a telescopic air cylinder 21 connected to the third air supply pipe 93, one end of the telescopic air cylinder 21 is fixed to the inside of the detection platform 1, and an auxiliary roller 22 is fixedly connected to the extended end of the telescopic air cylinder 21; the rotating roller 17 and the auxiliary roller 22 are at the same horizontal height, and their movement direction is... The top surface of the moving groove 8 is lower than the top surface of the adsorption plate 12. The interior of the second receiving cylinder 14 is divided into an upper cavity 141 and a lower cavity 142. The upper piston plate 16 is slidably and sealed in the upper cavity 141, and the lower piston plate 161 is slidably and sealed in the lower cavity 142. The upper piston plate 16 and the lower piston plate 161 are coaxially arranged. The lower cavity 142 is connected to a fixed cylinder 19 through a fitting tube 18. The fixed cylinder 19 is fixedly installed on the top of the support plate 7. A push rod 20 is slidably arranged inside the fixed cylinder 19. The top of the push rod 20 is elastically connected to the fixed cylinder 19 through a fitting spring 201. The top of the push rod 20 is used to support the automotive interior parts. The rotating roller 17 moves in the opposite direction to the lifting direction of the push rod 20. The top of the push rod 20 is made of a flexible contact material and is flexibly attached to the bottom surface of the automotive interior parts.

[0026] Subsequently, when movement is required for testing, the air pump continues to operate under negative pressure, opening the solenoid valve of the second air supply pipe 92, and gas is delivered to the interior of the second receiving cylinder 14. This creates negative pressure in the upper chamber 141 of the second receiving cylinder 14. Since the upper piston plate 16 is fitted into the interior of the upper chamber 141, the roller bracket 15 and the rotating roller 17 can move downwards, preventing the rotating roller 17 from contacting the bottom surface of the automotive interior trim. Then, the lower piston plate 161, fixed at the bottom of the upper piston plate 16, moves within the lower chamber 142. The upper piston plate 16 and the lower piston plate 162 are connected by a rod, and the rod is slidably and sealingly disposed within the partition between the upper chamber 141 and the lower chamber 142, allowing the lower piston plate 16 to move downwards. The piston disc 161 delivers gas from the lower chamber 142 to the fixed cylinder 19 via the mating pipe 18. This causes the push rod 20 inside the fixed cylinder 19 to rise via the mating spring 201. At this time, the push rod 20 is in contact with the bottom of the automotive interior trim, raising the trim. Since the piston rod 11 at the bottom of the adsorption plate 12 is connected to the inner side of the first receiving cylinder 10 via the return spring 13, the adsorption plate 12 also rises. Gas is then delivered to the telescopic cylinder 21 via the third gas supply pipe 93, causing the telescopic cylinder 21 to contract. This, in turn, causes the end of the telescopic cylinder 21 to lift the auxiliary roller 22. This ensures that the bottom surface of the automotive interior parts does not directly contact the top surface of the inspection platform 1. The control system activates the second electric push rod 6, which moves the support plate 7 within the moving groove 8, shifting the automotive interior parts above the inspection platform 1. Simultaneously, the first electric push rod 2 is activated to maintain the scanning position of the laser scanning component 5 relative to the workpiece. Next, gas is supplied to the gas supply pipe 9. This releases the negative pressure on the adsorption plate 12, allowing gas to continue flowing into the upper cavity 141. This causes the upper piston plate 16 to move within the upper cavity 141, raising the rotating roller 17. At this time, the lower piston disc 161 performs negative pressure treatment inside the lower cavity 142, so that the push rod 20 does not contact the bottom surface of the car interior part. Finally, the gas will also cause the telescopic air cylinder 21 to reset, so that the auxiliary roller 22 no longer contacts the car interior part. At this time, the car interior part is placed on the top of the detection platform 1, and only the rotating roller 17 rolls in contact with the car interior part, separating the adsorption plate 12 from the car interior part. When the second electric push rod 6 drives the support plate 7 to reset, it can be easily moved stably and returned to the initial position for the negative pressure adsorption work to be carried out again. Through the above settings, it is convenient to detect and process long car interior parts.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser scanning-based automobile interior part size detection device, comprising a detection platform (1), characterized in that: The detection platform (1) is fixedly provided with a first electric push rod (2) at both ends. The output end of the first electric push rod (2) is fixedly connected to a support detection frame (3). The support detection frame (3) is slidably disposed on the outside of the detection platform (1). An adjustment component (4) is installed on the top of the support detection frame (3). The execution end of the adjustment component (4) is connected to a laser scanning component (5). The back of the detection platform (1) is fixedly provided with a second electric push rod (6). The output end of the second electric push rod (6) is fixedly connected to a support plate (7). The support plate (7) is slidably disposed in the moving slot (8) opened in the detection platform (1). The bottom of the support plate (7) is connected to an air supply connection pipe (9). The top of the support plate (7) is provided with a negative pressure adsorption mechanism. The top of the negative pressure adsorption mechanism is used to adsorb and fix the smooth surface of the automotive interior parts. The support plate (7) is also provided with a pneumatic roller adjustment mechanism connected to the air supply connection pipe (9).

2. The laser scanning based size detection device for automotive interior parts according to claim 1, characterized in that: The adjusting component (4) includes a drive motor and a threaded rod. The drive motor is fixedly installed on the side wall of the support detection frame (3). The output end of the drive motor is coaxially fixedly connected to the threaded rod. The threaded rod is threadedly connected to the outer shell of the laser scanning component (5) to drive the laser scanning component (5) to move longitudinally along the support detection frame (3).

3. The laser scanning based size detection device for automotive interior parts according to claim 1, characterized in that: The gas supply connection pipe (9) is used to connect to an external air pump. The outer end of the gas supply connection pipe (9) is connected to a first gas supply pipe (91), a second gas supply pipe (92) and a third gas supply pipe (93). The first gas supply pipe (91) is connected to a negative pressure adsorption mechanism, and the second gas supply pipe (92) and the third gas supply pipe (93) are both connected to a pneumatic roller adjustment mechanism.

4. The laser scanning based size detection device for automotive interior parts according to claim 3, characterized in that: The negative pressure adsorption mechanism includes a first receiving cylinder (10) connected to the top of the first air supply pipe (91). A piston rod (11) is slidably arranged inside the first receiving cylinder (10). An adsorption plate (12) is fixedly arranged on the top of the piston rod (11). The top surface of the adsorption plate (12) is used to adhere to and adsorb the smooth surface of the automotive interior parts.

5. The laser scanning based size detection device for automotive interior parts according to claim 4, characterized in that: The piston rod (11) has an air passage (111) inside. The first air supply pipe (91) is connected to the adsorption chamber of the adsorption plate (12) through the air passage (111). A return spring (13) is provided between the outer side of the piston rod (11) and the first receiving cylinder (10).

6. The laser scanning based size detection device for automotive interior parts according to claim 3, characterized in that: The pneumatic roller adjustment mechanism includes a second receiving cylinder (14) connected to the second air supply pipe (92), a roller bracket (15) is slidably provided on the top of the second receiving cylinder (14), an upper piston disc (16) is fixed at the bottom of the roller bracket (15), and a rotating roller (17) is rotatably installed on the top of the roller bracket (15); one end of the roller bracket (15) extending into the second receiving cylinder (14) is elastically connected to the interior of the second receiving cylinder (14) through a connecting spring (151); the pneumatic roller adjustment mechanism also includes a telescopic air cylinder (21) connected to the third air supply pipe (93), one end of the telescopic air cylinder (21) is fixed to the inside of the detection platform (1), and an auxiliary roller (22) is fixedly connected to the extended end of the telescopic air cylinder (21).

7. The laser scanning based size detection device for automotive interior parts according to claim 6, characterized in that: The rotating roller (17) is at the same horizontal level with the auxiliary roller (22), and the moving directions of the two are opposite; the top surface height of the moving groove (8) is lower than the top surface height of the adsorption disc (12).

8. The laser scanning based size detection device for automotive interior parts according to claim 6, characterized in that: The inner part of the second containing cylinder (14) is separated to form an upper cavity (141) and a lower cavity (142), an upper piston disc (16) is sealingly and slidingly arranged in the upper cavity (141), and a lower piston disc (161) is sealingly and slidingly arranged in the lower cavity (142), and the upper piston disc (16) and the lower piston disc (161) are coaxially arranged.

9. The laser scanning based size detection device for automotive interior parts according to claim 8, characterized in that: The lower cavity (142) is communicated with a fixing cylinder (19) through a matching pipe (18), the fixing cylinder (19) is fixedly installed on the top of the supporting plate (7), a top rod (20) is slidingly arranged in the fixing cylinder (19), the top of the top rod (20) is elastically connected with the fixing cylinder (19) through a matching spring (201), and the top end of the top rod (20) is used for jacking the bottom of the automotive interior part.

10. The laser scanning based size detection device for automotive interior parts according to claim 8, characterized in that: The lifting direction of the top rod (20) is opposite to that of the rotating roller (17), the top end of the top rod (20) is made of flexible contact material, and the top end of the top rod (20) is flexibly attached to the bottom surface of the automotive interior part.

Images