Automobile injection molding part hole site detection device
By designing a hole position detection device for automotive injection molded parts, and utilizing a conveyor belt assembly and a rack and pinion system to achieve stable rotation and movement of the injection molded parts, the laser detector is ensured to perform accurate measurements at multiple angles and positions, thus resolving the issue of the laser detector being susceptible to external disturbances and improving the stability and accuracy of detection.
Patent Information
- Application Number
- CN202510796676.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing laser aperture detectors are susceptible to external disturbances during the inspection of automotive injection molded parts, resulting in unstable test results. It is especially difficult to maintain the ideal distance and angle on high-speed production lines, increasing the risk of missed or false detections.
A hole position detection device for automotive injection molded parts is designed, including a support platform, an injection molded part moving assembly, and a comprehensive detection assembly. Utilizing a laser aperture detector, a conveyor belt assembly, a rack and pinion system, and a timing belt assembly, the device achieves stable clamping, rotation, and movement of the injection molded parts, ensuring accurate measurement at multiple angles and positions using the laser detector.
It improves the stability and accuracy of detection, reduces errors, adapts to the detection of complex-shaped injection molded parts, reduces manual intervention, and improves the intelligence level and quality control capabilities of the production line.
Smart Images
Figure CN120668019A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automobile injection molded parts detection, and in particular relates to a hole position detection device for automobile injection molded parts. Background Art
[0002] Injection molding is one of the most commonly used processes in automotive parts manufacturing and is widely used in multiple fields such as body, interior, and exterior. Injection molded parts are one of the key components in automobile manufacturing. Their hole accuracy directly affects subsequent assembly and overall vehicle performance. Accurate hole position detection can ensure that injection molded parts meet design requirements and avoid assembly difficulties or functional problems caused by hole position deviation, thereby ensuring the stability of vehicle quality and performance. Automated hole position detection devices can greatly improve detection efficiency and accuracy, reduce manual operation errors, and improve quality control capabilities during the production process.
[0003] Currently, when inspecting the hole positions of automotive injection-molded parts, laser aperture detectors are often used to inspect the parts in transit. However, laser detectors may be affected by external disturbances (such as vibrations, changes in moving speed, etc.) during movement, resulting in unstable detection results. Especially on high-speed production lines, the laser detector may not always maintain the ideal distance and angle from the injection-molded parts, affecting the reliability of the detection. In particular, if the angle and position of the laser beam are not kept stable when the injection-molded parts are moving, the actual position of the holes may not be accurately detected or errors may occur. In addition, the laser aperture detector may not be able to track each hole position in real time when the injection-molded parts are moving rapidly, thereby increasing the risk of missed detection or false detection. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a hole position detection device for automobile injection molded parts.
[0005] The technical solution adopted to solve the above technical problems is: a hole position detection device for automobile injection molded parts, including a support platform, four universal wheels are installed at the bottom of the support platform, an injection molded part moving component is installed in the middle of the support platform, which is used to clamp and rotate the automobile injection molded parts, and comprehensive detection components are installed on both sides of the top of the support platform, which are used to perform comprehensive hole position detection on the moving automobile injection molded parts. At the same time, a laser aperture detector is installed on the top of the comprehensive detection component.
[0006] Through the above technical solution, the stability of the laser aperture detector can be maintained, the detection path is fixed, and the conditions for each detection are relatively consistent. No matter how the injection molded part moves laterally or rotates, the detection direction of the laser detector will not change, thereby ensuring consistency and stability during the detection process.
[0007] Furthermore, the injection molded part moving assembly includes a conveyor belt assembly installed in the middle of the support platform, and the conveyor roller in the conveyor belt assembly is rotatably connected to the inner wall of the support platform. A first motor is installed on one side of the support platform, and the output end of the first motor is rotatably connected to the support platform. At the same time, the through end of the first motor is fixedly connected to one of the conveyor rollers in the conveyor belt assembly. A rack is welded on one side of the top of the support platform, and the rack is limitedly and slidably connected to the support platform with a placement plate, and the conveyor belt assembly moves the placement plate.
[0008] Through the above technical solution, during the injection molding process, hole position deviations may occur due to factors such as irregular shapes of injection molded parts and inaccurate positioning. The combination of lateral movement and rotation can maximize the detection of these deviations and defects. It can perform comprehensive inspections at different angles and positions, ensuring that problems can be discovered in a timely manner even with slight deviations in the injection molded parts.
[0009] Furthermore, the placement plate is provided with a slot on the side facing the rack, and a first gear and a second gear are provided in the slot of the placement plate, and the first gear and the second gear are rotatably connected to the placement plate, the first gear and the second gear are meshed for transmission, and the first gear is meshed with the rack on the side away from the second gear for transmission, a placement rack is rotatably connected at the center of the top surface of the placement plate, and the placement rack connecting shaft is rotatably connected to the placement plate, and the placement rack connecting shaft is fixedly connected to the second gear at the through end, threaded rods are threadedly connected on both sides of the top of the placement rack, and the threaded rods are rotatably connected to a splint with an arc-shaped structure at one end facing the inside of the placement rack, and the splint is made of rubber non-slip material as a whole, and a knob is fixedly connected to the other end of the threaded rod.
[0010] Through the above technical solution, when the injection molded part moves laterally and rotates, the laser or other sensors can accurately measure the hole from multiple angles, which can effectively avoid measurement errors caused by the limitations of a fixed angle or position.
[0011] Furthermore, the comprehensive detection component includes two annular frames fixedly connected to the side walls of the support platform, and the two annular frames are arranged in a mirror image. A first bevel gear is fixedly connected to the middle part of the annular frame facing the support platform, and the first bevel gear connecting shaft passes through and is rotatably connected to a driven gear and a rotating frame. At the same time, the driven gear is fixedly connected to the rotating frame. The driven gear is rotatably connected to the annular frame, and the bottom of the driven gear is transmission-connected to a driving gear. The first bevel gear is transmission-connected to a second bevel gear, and the second bevel gear connecting shaft is rotationally connected to the rotating frame.
[0012] Furthermore, the annular frame is provided with a U-shaped slide rail on the side facing the support platform, the rotating frame is slidably connected to the sliding frame, and a slider is provided in the U-shaped slide rail of the annular frame, and the slider is slidably connected to the annular frame, and the end of the slider away from the annular frame is rotatably connected to the sliding frame, the sliding frame is fixedly connected to a third bevel gear on the side away from the slider, and the third bevel gear connecting shaft is rotatably connected to the sliding frame, and the third bevel gear connecting shaft is rotatably connected to the supporting frame through the end, the supporting frame is rotatably connected to the sliding frame, and the laser aperture detector is installed on the top surface of the support frame.
[0013] Through the above technical solution, automotive injection molded parts may have slight dynamic changes during the production process, such as rotation angle, position offset, etc. The laser aperture detector can better adapt to these dynamic changes through its square-shaped reciprocating motion. Regardless of how the actual movement of the injection molded parts in the production line changes, the laser detector can stably complete the detection task.
[0014] Furthermore, one side of the third bevel gear is transmission-connected to a fourth bevel gear, and the fourth bevel gear connecting shaft is rotationally connected to the sliding frame, and the through-end of the fourth bevel gear connecting shaft is fixedly connected to a sliding rod, and the sliding rod is slidingly connected to the rotating frame at one end away from the fourth bevel gear, and the through-end of the sliding rod is slidingly connected to the second bevel gear connecting shaft, and the through-end of the sliding rod is located inside the second bevel gear connecting shaft.
[0015] Furthermore, the annular frame is rotatably connected to a second synchronization component on the side away from the driving gear, and the synchronization wheel connecting shaft located at the top of the support platform in the second synchronization component is rotatably connected to the support platform. At the same time, the through end of the synchronization wheel connecting shaft located at the top of the support platform in the second synchronization component is fixedly connected to the driving gear, and a second connecting rod is fixedly connected between the other synchronization wheels in the second synchronization component located on both sides of the support platform, and the second connecting rod is rotatably connected to the support platform.
[0016] Through the above technical solution, through the U-shaped reciprocating automated motion mode, the laser aperture detector can be efficiently integrated with the automated production line without human intervention. The system can independently complete the detection task, reduce the errors caused by manual operation, and improve the intelligence level of the production line.
[0017] Furthermore, a first synchronous belt assembly is fixedly connected to the middle part of the second connecting rod, and a synchronous wheel in the first synchronous belt assembly is fixedly connected to the second connecting rod. At the same time, another synchronous wheel in the first synchronous belt assembly is fixedly connected to the first connecting rod. The first connecting rod is rotatably connected to the support platform, and a second motor is installed at the bottom of one side of the support platform. The output end of the second motor is rotatably connected to the support platform, and the through end of the second motor is fixedly connected to the first connecting rod.
[0018] The above technical solution not only improves detection accuracy and efficiency, but also reduces errors, improves equipment stability, and adapts to the geometric shapes of complex injection molded parts. In this way, efficient quality control and a reliable production process are ensured.
[0019] The beneficial effects of the present invention are as follows: (1) The present invention drives the conveyor belt assembly to transmit by rotating the first motor forward and reversely, and drives the placement plate to move back and forth on the conveyor belt assembly under the action of friction. During the movement of the placement plate, the first gear engages and rotates along the linear direction of the rack, thereby driving the second gear on the other side to rotate, prompting the placement rack on the top of the placement plate and its internal components to rotate synchronously, thereby driving the automobile injection molding parts to move back and forth and rotate in the linear direction of the conveyor belt assembly, which can adapt to these complex geometric shapes, ensure that the position and size of each hole can be accurately measured at all angles, and avoid the situation where movement in a single direction cannot fully cover all hole positions; (2) The present invention drives the first connecting rod to rotate by the operation of the second motor, thereby causing the first synchronous belt assembly to transmit, thereby driving the second connecting rod to rotate synchronously, prompting the second synchronous assemblies on both sides of the support platform to transmit, driving the driving gear to rotate synchronously, so that the second bevel gear revolves along the center of the first bevel gear while rotating, thereby prompting the support frame to move along the U-shaped trajectory of the annular frame and always maintain a horizontal state, driving the laser aperture detector to move synchronously with the driven gear, prompting the laser aperture detector to perform a cyclic U-shaped movement and maintain the same direction of movement, and to detect automobile injection molded parts that are rotating back and forth. It can adapt to automobile injection molded parts with complex shapes and ensure that the aperture and position of each hole are accurately measured. In particular, during the rotation of the injection molded part, the laser detector can effectively detect at different angles and different positions to ensure high-precision measurement. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic structural diagram of the first perspective of the present invention; Figure 2 It is a schematic structural diagram of the second viewing angle of the present invention; Figure 3 3 is a schematic structural diagram of the present invention from a third perspective; Figure 4 It is a partial structural schematic diagram of the present invention; Figure 5 is a schematic structural diagram of the fourth viewing angle of the present invention; Figure 6 yes Figure 1 A schematic diagram of the enlarged structure at point A; Figure 7 yes Figure 2 A schematic diagram of the enlarged structure at point B; Figure 8 yes Figure 3 Enlarged structural diagram at C.
[0021] Figure markings: 11. support platform; 12. universal wheel; 13. laser aperture detector; 2. injection molded part moving assembly; 21. first motor; 22. conveyor belt assembly; 23. rack; 24. placement plate; 25. first gear; 26. second gear; 27. placement frame; 28. threaded rod; 29. clamping plate; 210. knob; 3. comprehensive detection assembly; 31. second motor; 32. first connecting rod; 33. first synchronous belt assembly; 34. second connecting rod; 35. second synchronous assembly; 36. annular frame; 37. driven gear; 38. driving gear; 39. rotating frame; 310. sliding frame; 311. first bevel gear; 312. second bevel gear; 313. sliding rod; 314. third bevel gear; 315. fourth bevel gear; 316. slider; 317. support frame. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0023] like Figures 1-4As shown, a hole position detection device for automobile injection molded parts of this embodiment includes a support platform 11, four universal wheels 12 are installed at the bottom of the support platform 11, and an injection molded part moving component 2 is installed in the middle of the support platform 11 for clamping and rotating the automobile injection molded parts. The injection molded part moving component 2 includes a conveyor belt component 22 installed in the middle of the support platform 11, and the conveyor roller in the conveyor belt component 22 is rotatably connected to the inner wall of the support platform 11. A first motor 21 is installed on one side of the support platform 11, and the output end of the first motor 21 is connected to the support platform 11 through The first motor 21 is connected to the conveyor belt assembly 22 at its through end and is fixedly connected to one of the conveyor rollers in the conveyor belt assembly 22. A rack 23 is welded to one side of the top of the support platform 11, and the rack 23 is connected to the support platform 11 with a placement plate 24 in a limited sliding manner. A slot is provided on the placement plate 24 facing the rack 23, and a first gear 25 and a second gear 26 are provided in the slot of the placement plate 24, which can maintain the stability of the laser aperture detector 13 and fix the detection path, so that the conditions of each detection are relatively consistent, regardless of how the injection molded part moves laterally or Rotation, the detection direction of the laser detector will not change, thereby ensuring consistency and stability during the detection process, and at the same time, the first gear 25 and the second gear 26 are rotatably connected to the placement plate 24, the first gear 25 and the second gear 26 are meshed for transmission, and the first gear 25 is meshed with the rack 23 on the side away from the second gear 26 for transmission, and the center of the top surface of the placement plate 24 is rotatably connected to a placement frame 27, and the placement frame 27 connecting shaft is rotatably connected to the placement plate 24, and the placement frame 27 connecting shaft is fixed to the second gear 26 at the through end, and the placement frame 27 connecting shaft is threadedly connected to the threaded rod 28 on both sides of the top of the placement frame 27, and the threaded rod 28 is rotatably connected to a splint 29 with an arc-shaped structure at one end facing the inside of the placement frame 27, and the splint 29 is made of rubber non-slip material as a whole. When the injection molded part moves laterally and rotates, the laser or other sensors can accurately measure the hole from multiple angles, which can effectively avoid measurement errors caused by the limitations of a fixed angle or position. At the same time, the other end of the threaded rod 28 is fixedly connected to the knob 210, and the conveyor belt assembly 22 moves the placement plate 24.
[0024] like Figure 1-Figure 7As shown, comprehensive detection components 3 are installed on both sides of the top of the support platform 11, which are used to perform comprehensive hole position detection on the moving automobile injection molded parts. The comprehensive detection component 3 includes two annular frames 36 fixedly connected to the side walls of the support platform 11, and the two annular frames 36 are mirrored. The annular frame 36 is rotatably connected to the side away from the drive gear 38 of the second synchronizing component 35, and the synchronizing wheel connecting shaft located at the top of the support platform 11 in the second synchronizing component 35 is rotatably connected to the support platform 11. At the same time, the through end of the synchronizing wheel connecting shaft located at the top of the support platform 11 in the second synchronizing component 35 is connected and fixed to the drive gear 38. A second connecting rod 34 is fixedly connected between the other synchronizing wheels in the second synchronizing component 35 on both sides of the support platform 11. During the injection molding production process, hole position deviations may occur due to factors such as irregular shape of the injection molded parts and inaccurate positioning. The combination of lateral movement and rotation can maximize the discovery of these deviations and defects. It can perform comprehensive inspections at different angles and positions to ensure that even with slight deviations of the injection molded parts, Problems can also be discovered in time. The middle part of the second connecting rod 34 is fixedly connected to the first synchronous belt assembly 33, and a synchronous wheel in the first synchronous belt assembly 33 is fixedly connected to the second connecting rod 34. At the same time, another synchronous wheel in the first synchronous belt assembly 33 is fixedly connected to the first connecting rod 32. The first connecting rod 32 is rotatably connected to the support platform 11, and a second motor 31 is installed at the bottom of one side of the support platform 11. The output end of the second motor 31 is rotatably connected to the support platform 11, and the through end of the second motor 31 is fixedly connected to the first connecting rod 32, and the second connecting rod 34 is rotatably connected to the support platform 11. A square-shaped slide rail is provided on the side of the annular frame 36 facing the support platform 11, and a sliding frame 310 is slidably connected to the rotating frame 39, and a slider 316 is provided in the square-shaped slide rail of the annular frame 36. At the same time, the slider 316 is slidably connected to the annular frame 36, and the end of the slider 316 away from the annular frame 36 is rotatably connected to the sliding frame 310, and the side of the sliding frame 310 away from the slider 316 is fixedly connected to the third bevel gear 314.
[0025] like Figures 1-8The first gear 314 is connected to the first gear 315 by the transmission mechanism, and the first gear 315 is connected to the transmission mechanism 315 by the transmission mechanism. The sliding frame 310 is connected to the rotation through, and the third bevel gear 314 is connected to the support frame 317 at the end of the connecting shaft. The support frame 317 is connected to the sliding frame 310 in rotation, and the laser aperture detector 13 is installed on the top surface of the support frame 317. During the production process of automobile injection molding parts, there may be slight dynamic changes, such as rotation angle, position offset, etc. The laser aperture detector 13 can better adapt to these dynamic changes through the square-shaped reciprocating motion. No matter how the actual movement of the injection molding parts in the production line changes, the laser detector The first bevel gear 311 is connected to the second bevel gear 312 through the first bevel gear 312, and the second bevel gear 312 is connected to the second bevel gear 312.
[0026] The working principle of this embodiment is as follows: after placing the automobile injection molded part between the two clamps 29, the knobs 210 on both sides of the placement frame 27 are rotated to rotate the two threaded rods 28, thereby driving the two clamps 29 to move towards each other, clamping and fixing the automobile injection molded part, and then the first motor 21 rotates forward and reverse to drive the conveyor belt assembly 22 to transmit, and under the action of friction, drives the placement plate 24 to move back and forth on the conveyor belt assembly 22.
[0027] During the movement of the placement plate 24, the first gear 25 engages and rotates along the linear direction of the rack 23, thereby driving the second gear 26 on the other side to rotate, causing the placement rack 27 on the top of the placement plate 24 and its internal components to rotate synchronously, thereby driving the automobile injection molded parts to move back and forth and rotate in the linear direction of the conveyor belt assembly 22.
[0028] When the rotating automobile injection molded part moves past the laser aperture detector 13, the second motor 31 drives the first connecting rod 32 to rotate, thereby causing the first synchronous belt assembly 33 to transmit, thereby driving the second connecting rod 34 to rotate synchronously, prompting the second synchronous assemblies 35 on both sides of the support platform 11 to transmit, and driving the drive gear 38 to rotate synchronously.
[0029] When the driving gear 38 rotates, it can drive the driven gear 37 to rotate, and the rotating frame 39 rotates synchronously with the driven gear 37, so that the second bevel gear 312 revolves along the center of the first bevel gear 311 while rotating. In addition, the rotating frame 39 drives the sliding frame 310 and its connecting components to move along the trajectory of the annular frame 36, and the sliding frame 310 slides relatively in the rotating frame 39.
[0030] While the sliding frame 310 moves along the track of the annular frame 36, the fourth bevel gear 315 and the third bevel gear 314 rotate relative to each other. At the same time, the slide bar 313 slides relative to the second bevel gear 312 and the rotating frame 39 to adapt to the sliding movement of the sliding frame 310 in the rotating frame 39, thereby prompting the support frame 317 to move along the U-shaped track of the annular frame 36 and always maintain a horizontal state, driving the laser aperture detector 13 to move synchronously with the driven gear 37, so that the laser aperture detector 13 can cover all directions and angles of the injection molded part, ensuring that the hole position can be fully detected even if the injection molded part is moving horizontally or rotating.
[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A hole position detection device for automobile injection molded parts, comprising a support platform (11), wherein four universal wheels (12) are installed at the bottom of the support platform (11), characterized in that: An injection molded part moving assembly (2) is installed in the middle of the support platform (11) for clamping and rotating the automobile injection molded part, and comprehensive detection assemblies (3) are installed on both sides of the top of the support platform (11) for performing comprehensive hole position detection on the moving automobile injection molded part. At the same time, a laser aperture detector (13) is installed on the top of the comprehensive detection assembly (3).
2. The hole position detection device for automobile injection molded parts according to claim 1, characterized in that: The injection molded part moving assembly (2) includes a conveyor belt assembly (22) installed in the middle of the support platform (11), and the conveying roller in the conveyor belt assembly (22) is rotatably connected to the inner wall of the support platform (11), a first motor (21) is installed on one side of the support platform (11), and the output end of the first motor (21) is rotatably connected to the support platform (11), and the through end of the first motor (21) is fixedly connected to one of the conveying rollers in the conveyor belt assembly (22), a rack (23) is welded on one side of the top of the support platform (11), and the rack (23) is limitedly slidably connected to the support platform (11) with a placement plate (24), and the conveyor belt assembly (22) moves the placement plate (24).
3. The hole position detection device for automobile injection molded parts according to claim 2, characterized in that: The placement plate (24) has a slot on one side facing the rack (23), and a first gear (25) and a second gear (26) are provided in the slot of the placement plate (24). The first gear (25) and the second gear (26) are rotatably connected to the placement plate (24). The first gear (25) and the second gear (26) are meshed with each other for transmission, and the first gear (25) is meshed with the rack (23) on the side away from the second gear (26). The placement plate (24) is rotatably connected to a placement rack ( 27), and the placement frame (27) connecting shaft is connected to the placement plate (24) through rotation, and the placement frame (27) connecting shaft is fixedly connected to the second gear (26) through the end, and the top two sides of the placement frame (27) are threadedly connected with threaded rods (28), and the threaded rods (28) are rotatably connected to a clamping plate (29) with an arc structure at one end facing the inside of the placement frame (27), and the clamping plate (29) is made of rubber non-slip material as a whole, and the other end of the threaded rod (28) is fixedly connected to a knob (210).
4. The hole position detection device for automobile injection molded parts according to claim 1, characterized in that: The comprehensive detection component (3) includes two annular frames (36) fixedly connected to the side walls of the support platform (11), and the two annular frames (36) are arranged in a mirror image. A first bevel gear (311) is fixedly connected to the middle part of the annular frame (36) facing the support platform (11), and the first bevel gear (311) is connected to a connecting shaft through which a driven gear (37) and a rotating frame (39) are rotatably connected. At the same time, the driven gear (37) is fixedly connected to the rotating frame (39). The driven gear (37) is rotatably connected to the annular frame (36), and the bottom of the driven gear (37) is transmission-connected to a driving gear (38). The first bevel gear (311) is transmission-connected to a second bevel gear (312), and the connecting shaft of the second bevel gear (312) is rotationally connected to the rotating frame (39).
5. The hole position detection device for automobile injection molded parts according to claim 4, characterized in that: The annular frame (36) is provided with a square-shaped slide rail on the side facing the support platform (11), the rotating frame (39) is slidably connected to the sliding frame (310), and a slider (316) is provided in the square-shaped slide rail of the annular frame (36), and the slider (316) is slidably connected to the annular frame (36), and the end of the slider (316) away from the annular frame (36) is rotatably connected to the sliding frame (310), and the side of the sliding frame (310) away from the slider (316) is fixedly connected to the third bevel gear (314), and the connecting shaft of the third bevel gear (314) is rotatably connected to the sliding frame (310), and the connecting shaft of the third bevel gear (314) is rotatably connected to the supporting frame (317), the supporting frame (317) is rotatably connected to the sliding frame (310), and the laser aperture detector (13) is mounted on the top surface of the supporting frame (317).
6. The hole position detection device for automobile injection molded parts according to claim 5, characterized in that: One side of the third bevel gear (314) is connected to the fourth bevel gear (315) in a transmission manner, and the connecting shaft of the fourth bevel gear (315) is connected to the sliding frame (310) through rotation, and the through end of the connecting shaft of the fourth bevel gear (315) is fixedly connected to the sliding rod (313), and the end of the sliding rod (313) away from the fourth bevel gear (315) is connected to the rotating frame (39) through sliding, and the through end of the sliding rod (313) is connected to the connecting shaft of the second bevel gear (312) through sliding, and the through end of the sliding rod (313) is located inside the connecting shaft of the second bevel gear (312).
7. The hole position detection device for automobile injection molded parts according to claim 4, characterized in that: The annular frame (36) is rotatably connected to a second synchronous assembly (35) on a side away from the driving gear (38), and a synchronous wheel connecting shaft located at the top of the support platform (11) in the second synchronous assembly (35) is rotatably connected to the support platform (11), and a through end of the synchronous wheel connecting shaft located at the top of the support platform (11) in the second synchronous assembly (35) is fixedly connected to the driving gear (38), and a second connecting rod (34) is fixedly connected between the other synchronous wheels in the second synchronous assembly (35) located on both sides of the support platform (11), and the second connecting rod (34) is rotatably connected to the support platform (11).
8. The hole position detection device for automobile injection molded parts according to claim 7, characterized in that: The middle portion of the second connecting rod (34) is fixedly connected to the first synchronous belt assembly (33), and a synchronous wheel in the first synchronous belt assembly (33) is fixedly connected to the second connecting rod (34). At the same time, another synchronous wheel in the first synchronous belt assembly (33) is fixedly connected to the first connecting rod (32). The first connecting rod (32) is rotatably connected to the support platform (11), and a second motor (31) is installed at the bottom of one side of the support platform (11). The output end of the second motor (31) is rotatably connected to the support platform (11), and the through end of the second motor (31) is fixedly connected to the first connecting rod (32).