A multi-station all-around visual inspection device and system for automobile injection molded parts

Abstract

This invention relates to the field of visual inspection technology for automotive injection molded parts, specifically a multi-station, omnidirectional visual inspection device and system for automotive injection molded parts. The device includes a conveyor frame structure with an intermittent drive mechanism mounted on it. A synchronization mechanism is mounted on one side of the conveyor frame structure, and multiple central shafts are mounted on the synchronization mechanism, one of which is connected to the intermittent drive mechanism. The system includes a PLC control module connected to the device. The PLC control module is connected to a 3D molding device, a comparison module, and an alarm device. The 3D molding device is equipped with an input device. This invention, through the combination of the device and system, forms an efficient injection molded part inspection solution, allowing the injection molded parts to move smoothly on the device while rapidly generating 3D scan data for comparison with qualified data, ensuring inspection quality.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology for automotive injection molded parts, and in particular to a multi-station, all-around visual inspection device and system for automotive injection molded parts. Background Technology

[0002] In the automotive manufacturing industry, burrs on injection-molded parts are a crucial quality control indicator. Burrs are unwanted flakes that form at the mold joint during the injection molding process, potentially affecting the product's appearance, performance, and assembly accuracy. Given the high-quality requirements of automotive injection-molded parts, effectively identifying and controlling burrs has become an unavoidable challenge in the manufacturing process.

[0003] To achieve automated inspection of injection molded parts, Chinese invention patent CN121661589A discloses a machine vision-assisted method for monitoring the dimensional accuracy of automotive injection molded parts. This method uses a combination of visible and near-infrared light sources for illumination, acquires and fuses multi-view images, extracts the contour information of preset key dimension areas, and compares it with a CAD model to calculate key dimensional parameters. This method improves the accuracy of dimensional inspection to a certain extent.

[0004] However, this method inherently relies on sparse reconstruction of limited, pre-defined regions of interest (ROIs) and edge points of two-dimensional images, aiming to solve dimensional measurement problems. It cannot acquire complete and continuous three-dimensional surface topography data of injection molded parts, especially for those with complex curved surfaces, deep cavities, reinforcing ribs, or undercuts. This method has inherent visual blind spots, making it difficult to achieve full surface coverage detection. Consequently, minute surface defects such as burrs distributed in non-pre-defined areas or complex geometries are easily missed, failing to meet the increasingly stringent zero-defect quality control requirements for automotive injection molded parts.

[0005] Therefore, how to overcome the limitations of existing detection methods based on sparse two-dimensional features, achieve three-dimensional morphological perception of the entire surface of automotive injection molded parts without blind spots, and accurately and completely identify burr defects on this basis, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a multi-station omnidirectional visual inspection device and system for automotive injection molded parts.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multi-station omnidirectional visual inspection device for automotive injection molded parts includes a conveyor frame structure, an intermittent drive mechanism mounted on the conveyor frame structure, a synchronization mechanism mounted on one side of the conveyor frame structure, and multiple central shafts mounted on the synchronization mechanism, one of which is connected to the intermittent drive mechanism. An installation and transport mechanism is mounted on multiple central shaft components. A deflection mechanism is installed inside the conveyor frame structure. A tilting frame is provided on the deflection mechanism. Multiple conveying rollers are installed at equal intervals at both ends of the tilting frame. The tilting frame is connected to the installation and transport mechanism. Two surround detection mechanisms are installed on one side of the conveyor frame structure, and two vision detection devices are provided on the surround detection mechanisms. The two surround inspection mechanisms are respectively connected to the two installation and transportation mechanisms; The visual inspection device located at the upper end of the surrounding inspection mechanism is installed at the upper end of the installation and transportation mechanism; the visual inspection device located on one side of the surrounding inspection mechanism is installed on one side of the installation and transportation mechanism.

[0008] Compared with existing technologies, this invention can form an efficient injection molded part inspection solution by combining the device and the system, so that the injection molded part can move smoothly on the device, and at the same time, 3D scanning data can be quickly generated for comparison with qualified data to ensure the quality of inspection.

[0009] Preferably, the intermittent drive mechanism includes a drive motor assembly fixed to one side of the conveyor frame structure, a disc fixed on the output shaft of the drive motor assembly, a connecting rod fixed on one side of the disc, a mounting shaft rotatably sleeved on one side of the conveyor frame structure, a turntable fixed on the mounting shaft, three stop rods fixed at equal intervals on the turntable, and a drive belt assembly jointly mounted on the mounting shaft and one of the central shafts. The connecting rod and one of the stop rods are in contact.

[0010] Furthermore, the connecting rod rotates stably, but due to the eccentric setting, the connecting rod will collide with the stop rod in the lower right position of the figure when it rotates, thereby driving the turntable and the mounting shaft to rotate. As the connecting rod rotates, the connecting rod and the collided stop rod separate, the turntable stops rotating, and the injection molded part also stops moving.

[0011] Preferably, the disc component is eccentrically positioned on one side of the turntable component, and the drive motor assembly, output shaft, and mounting shaft are misaligned.

[0012] Furthermore, intermittent contact can be achieved through eccentric settings, thereby enabling intermittent transport of injection molded parts.

[0013] Preferably, the disc component and the drive belt assembly are respectively disposed on both sides of the turntable component.

[0014] Preferably, the synchronization mechanism includes a horizontal shaft that is rotatably sleeved on the other side of the conveyor frame structure. Multiple worm gears are fixed at equal intervals on the horizontal shaft. One end of multiple central shafts extends to the other side of the conveyor frame structure. A turbine is fixed to one end of the multiple central shafts that extends to the other side of the conveyor frame structure. The multiple worm gears mesh with the multiple turbines respectively.

[0015] Furthermore, through the cooperation of the horizontal shaft component, the worm gear component, and the turbine component, multiple central shaft components can be synchronously and stably rotated at the same speed, thereby enabling the directional delivery of injection molded parts.

[0016] Preferably, the installation and transportation mechanism includes four roller shafts, which are respectively fixedly mounted on four central shafts. The remaining central shafts are fixed with linkage shafts at both ends. The remaining central shafts are arranged in pairs, with two groups of central shafts located in the middle. The deflection mechanism is located in the middle of the two groups of central shafts in the middle. The remaining two sets of central shaft components are respectively located at both ends; Two of the four roller shaft components are respectively located at both ends of multiple central shaft components; The remaining two roller shafts are respectively located on both sides of the two sets of central shafts in the middle; Two lifting hydraulic cylinder assemblies are fixed at the bottom of the conveyor frame structure, and trays are fixed at both output ends of the two lifting hydraulic cylinder assemblies.

[0017] Furthermore, the central shaft can drive the roller shaft and the linkage shaft to rotate. That is, through the contact between the roller shaft and the linkage shaft and the injection molded part, the injection molded part can be stably conveyed. At the same time, through intermittent motion, ample time is provided for flipping and visual scanning. Meanwhile, the installation of the linkage shaft also fully considers the sequence of visual shooting, flipping and re-visual shooting, ensuring that the part flows out of the corresponding range for flipping, avoiding mutual interference during visual shooting, and improving the quality of visual scanning.

[0018] Preferably, the deflection mechanism includes a support shaft fixed within the conveyor frame structure, the support shaft being located in the middle of a plurality of central shaft members, a connecting frame being rotatably sleeved on the support shaft, and the tilting frame being fixed on the connecting frame at the end away from the support shaft; A hydraulic cylinder assembly is rotatably connected to one side of the connecting frame, and the lower end of the hydraulic cylinder assembly is rotatably connected to the bottom of the conveyor frame structure.

[0019] Furthermore, the extension and retraction of the hydraulic cylinder assembly can drive the connecting frame to rotate around the support shaft. That is, the connecting frame is the power source for the tilting frame to tilt. In actual operation, the extension and retraction time of the hydraulic cylinder assembly needs to be fully considered. The speed of the control equipment of the hydraulic cylinder assembly and the drive motor assembly, as well as the dimensions of related components such as the turntable, drive belt assembly, disc assembly and connecting rod are input in order to calculate the corresponding movement clearance. The above is the prior art and there is no need to disclose the calculation. Alternatively, a detection component can be added to the device. When the central shaft stops rotating, the hydraulic cylinder assembly moves, and the movement interval of the central shaft is detected. This controls the extension and retraction time of the hydraulic cylinder assembly. That is, after the hydraulic cylinder assembly has extended, the central shaft operates, and when the central shaft stops operating, the hydraulic cylinder assembly completes its retraction operation.

[0020] Preferably, the surround detection mechanism includes two support frames fixed to one side of the conveyor frame structure. A motor assembly is installed at the upper end of the support frame. The output shaft of the motor assembly passes through the upper end of the support frame and extends into the support frame. A bent piece is fixed to the end of the output shaft of the motor assembly. A sliding sleeve is slidably installed on the output end of the bent piece. A support shaft is threaded onto one side of the sliding sleeve. One side of the support shaft abuts against the vertical end of the bent piece. The horizontal ends of the sliding sleeve and the bent piece are respectively fixedly connected to two vision inspection devices.

[0021] Furthermore, the motor assembly can drive the bending component to rotate, so as to take a 3D picture of the injection molded part on the tray and transmit the captured information to the system to achieve comparison operation. In actual operation, the 3D model of the qualified injection molded part can be transmitted to the system first, or a qualified part can be scanned first, and the 3D model generated by the qualified part can be used as the basis for comparison.

[0022] Preferably, the distance between the connecting rod and the mounting shaft is greater than the distance from the stop rod to the mounting shaft.

[0023] Furthermore, by setting the distance, the connecting rod will intermittently collide with one of the stop rods when rotating, so as to push the stop rod to move, and the stop rod can drive the mounting shaft to rotate.

[0024] This invention also proposes a multi-station omnidirectional visual inspection system for automotive injection molded parts, applicable to any of the aforementioned multi-station omnidirectional visual inspection devices for automotive injection molded parts; the inspection system includes a PLC control module, which is connected to the aforementioned device; the PLC control module is connected to a 3D molding device, a comparison module, and an alarm device; the 3D molding device is equipped with an input device, which is connected to the aforementioned device; the system operation includes the following steps: S1. Component transportation: The drive motor assembly outputs power to make the disc drive the connecting rod to rotate. The rotation of the connecting rod will intermittently collide with one of the stop rods, which will cause the turntable to drive the drive belt assembly to rotate. The drive belt assembly can intermittently drive one of the central shafts to rotate. That is, through the cooperation of the horizontal shaft, worm gear and turbine, multiple central shafts can rotate synchronously and intermittently, which can intermittently and directionally transport automotive injection molded parts. S2. Preliminary visual imaging: When the central shaft stops rotating, when an automotive injection molded part is transported to a pallet, the lifting hydraulic cylinder assembly can push the pallet, so that the automotive injection molded part is captured by two visual inspection devices on one of the bending parts in a surround-view imaging manner. S3, Flip and re-visualize: The hydraulic cylinder assembly is reset, allowing the automotive injection molded part to continue moving to the flipping frame. The hydraulic cylinder assembly can flip the flipping frame, which in turn flips the automotive injection molded part, exposing its bottom. With the intermittent rotation of the central shaft, it can move to the next tray so that the next hydraulic cylinder assembly can rise, allowing the two visual inspection devices inside the next bent part to take pictures. S4. System Inspection: Set up 3D molding equipment that can receive data captured by four vision inspection devices to generate 3D data of automotive injection molded parts, and input qualified 3D data of automotive injection molded parts for comparative inspection. S5. Error Handling: When a mismatch is detected in the scan, an alarm can be issued so that staff can handle the situation.

[0025] The beneficial effects of this invention are: 1. The operation of the intermittent drive mechanism and the synchronization mechanism enables multiple central shafts to rotate synchronously in the same direction, allowing the injection molded parts placed on them to move intermittently in the direction of rotation. This provides a sufficient time interval for two vision scans and one flip. At the same time, the system settings can ensure the coordination effect and improve work efficiency. 2. The top vision inspection device scans the top of the injection molded part; the two vision inspection devices on the previous bending part cannot scan the bottom of the injection molded part, but through the operation of the flip frame, the two vision inspection devices on the next bending part can complete the scan of the bottom of the injection molded part in order to ensure the quality of the final 3D model. 3. By setting up 3D molding equipment and comparison modules, the injection molded parts can be compared with qualified data to complete the inspection of the injection molded parts. Attached Figure Description

[0026] Figure 1 This is a structural diagram of a multi-station omnidirectional visual inspection device for automotive injection molded parts proposed in this invention; Figure 2This is a diagram of the gap drive structure in a multi-station omnidirectional visual inspection device for automotive injection molded parts proposed in this invention. Figure 3 This is a diagram showing the installation structure of the conveyor roller on the flipping frame in a multi-station omnidirectional visual inspection device for automotive injection molded parts, as proposed in this invention. Figure 4 Appendix to this invention Figure 1 Enlarged view of point A; Figure 5 This is a structural diagram of a bent part in a multi-station omnidirectional visual inspection device for automotive injection molded parts proposed in this invention; Figure 6 Appendix to this invention Figure 1 Enlarged view of point B; In the diagram: 1. Conveyor frame structure, 2. Roller shaft, 3. Support frame, 4. Motor assembly, 5. Horizontal shaft, 6. Worm rod, 7. Turbine rod, 8. Linkage shaft, 9. Mounting shaft, 10. Tilting frame, 11. Stop bar, 12. Turntable, 13. Disc, 14. Connecting rod, 15. Drive belt assembly, 16. Connecting frame, 17. Hydraulic cylinder assembly, 18. Central shaft, 19. Lifting hydraulic cylinder assembly, 20. Bending component, 21. Vision inspection equipment, 22. Drive motor assembly, 23. Sliding kit, 24. Bolt, 25. Support shaft, 26. Conveyor roller, 27. Pallet. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1-6 A multi-station omnidirectional visual inspection device for automotive injection molded parts includes a conveyor frame structure 1, an intermittent drive mechanism mounted on the conveyor frame structure 1, a synchronization mechanism mounted on one side of the conveyor frame structure 1, and multiple central shafts 18 mounted on the synchronization mechanism, one of which is connected to the intermittent drive mechanism. The operation of the intermittent drive mechanism and the synchronization mechanism enables the multiple central shafts 18 to rotate synchronously in the same direction, causing the injection molded parts placed on them to move intermittently in a directional manner. This provides sufficient time intervals for two visual scans and one flip, and the system settings ensure effective coordination and improve work efficiency. Multiple central shaft components 18 are jointly equipped with an installation and transportation mechanism. A deflection mechanism is installed inside the conveyor frame structure 1. The deflection mechanism is equipped with a tilting frame 10. Multiple conveying rollers 26 are installed at equal intervals at both ends of the tilting frame 10. The tilting frame 10 is connected to the installation and transportation mechanism. The multiple conveying rollers 26 can lift the injection molded part. At the same time, when the roller component 2 and the linkage shaft component 8 abut against the injection molded part, it can ensure the smooth movement of the injection molded part and improve work efficiency. Two surround inspection mechanisms are installed on one side of the conveyor frame structure 1, and two vision inspection devices 21 are provided on the surround inspection mechanisms. The two surround inspection mechanisms are respectively connected to two installation and transportation mechanisms. The vision inspection device 21 located at the upper end of the surround inspection mechanism is set at the upper end of the installation and transportation mechanism. The vision inspection device 21 located on one side of the surround inspection mechanism is set on one side of the installation and transportation mechanism. The top vision inspection device 21 is used to scan the top of the injection molded part. The two vision inspection devices 21 on the previous bending part 20 cannot scan the bottom of the injection molded part, but through the operation of the flipping frame 10, the two vision inspection devices 21 on the next bending part 20 can complete the scanning of the bottom of the injection molded part in order to ensure the quality of the final 3D model.

[0029] In this invention, the intermittent drive mechanism includes a drive motor assembly 22 fixed to one side of the conveyor frame structure 1. The drive motor assembly 22 can drive the disc component 13 to rotate stably. The disc component 13 is fixed on the output shaft of the drive motor assembly 22. A connecting rod 14 is fixed to one side of the disc component 13. A mounting shaft 9 is rotatably sleeved on one side of the conveyor frame structure 1. A turntable component 12 is fixed on the mounting shaft 9. Three stop rods 11 are fixed at equal intervals on the turntable component 12. A drive belt assembly 15 is jointly mounted on the mounting shaft 9 and one of the central shafts 18. The connecting rod 14 and one of the stop rods 11 abut against each other. The connecting rod 14 rotates stably, but due to the eccentric setting, the connecting rod 14 will abut against the stop rod 11 when rotating. Figure 2 The stop bar 11 in the lower right position abuts, thereby driving the turntable 12 and the mounting shaft 9 to rotate. As the connecting rod 14 rotates, the connecting rod 14 and the abutting stop bar 11 separate, the turntable 12 stops rotating, and the injection molded part also stops moving.

[0030] In this invention, by setting the distance between the above-mentioned components, the connecting rod 14 can contact one of the stop rods 11 when rotating, and in turn drive the rotating disk 12 to rotate. At the same time, in actual operation, it is important to note that the rotating disk 12 or the mounting shaft 9 should be equipped with corresponding components so that the rotating disk 12 can stop operating when there is no external force. That is, the rotating disk 12 can only rotate when the connecting rod 14 contacts the stop rod 11. After the second connecting rod 14 and the stop rod 11 separate, the rotating disk 12 stops rotating.

[0031] In this invention, the disc component 13 is eccentrically positioned on one side of the turntable component 12, and the drive motor assembly 22, output shaft, and mounting shaft component 9 are misaligned; the eccentric positioning achieves intermittent contact, thereby enabling intermittent transport of the injection molded parts.

[0032] In this invention, the disc component 13 and the drive belt assembly 15 are respectively disposed on both sides of the turntable component 12; this avoids mutual interference during operation.

[0033] In this invention, the synchronization mechanism includes a horizontal shaft 5 rotatably sleeved on the other side of the conveyor frame structure 1. Multiple worm gears 6 are fixed at equal intervals on the horizontal shaft 5. One end of multiple central shafts 18 extends to the other side of the conveyor frame structure 1. A turbine 7 is fixed to one end of the multiple central shafts 18 extending to the other side of the conveyor frame structure 1. The multiple worm gears 6 mesh with the multiple turbine 7 respectively. Through the cooperation of the horizontal shaft 5, the worm gears 6 and the turbine 7, the multiple central shafts 18 can be synchronously and stably rotated at the same speed, thereby enabling the directional conveying of injection molded parts.

[0034] In this invention, the installation and transportation mechanism includes four roller shafts 2, which are respectively fixedly mounted on four central shafts 18. The remaining central shafts 18 are each fixed to two ends with a linkage shaft 8. The remaining central shafts 18 are arranged in pairs, with two pairs of central shafts 18 positioned in the middle. A deflection mechanism is located in the middle of the two pairs of central shafts 18. The central shafts 18 can drive the roller shafts 2 and linkage shafts 8 to rotate. Through the contact between the roller shafts 2 and linkage shafts 8 and the injection molded part, the injection molded part can be stably transported. Simultaneously, the intermittent motion provides ample time for flipping and visual scanning. Furthermore, the installation of the linkage shafts 8 fully considers the sequence of visual imaging, flipping, and subsequent visual imaging, ensuring that the part flows out of the appropriate range during flipping, avoiding mutual interference during visual imaging, and improving the quality of visual scanning. The remaining two sets of central shaft components 18 are respectively set at both ends; two of the four roller shaft components 2 are respectively set at both ends of the multiple central shaft components 18; the remaining two roller shaft components 2 are respectively set on both sides of the two sets of central shaft components 18 located in the middle; two lifting hydraulic cylinder assemblies 19 are fixed at the bottom inside the conveyor frame structure 1, and trays 27 are fixed at both output ends of the two lifting hydraulic cylinder assemblies 19. The lifting hydraulic cylinder assemblies 19 can push and retract the trays 27 so that the injection molded parts can be lifted, which can avoid the injection molded parts being blocked by the linkage shaft component 8, and ensure that the injection molded parts can be fully inspected, thereby adapting to injection molded parts of various specifications.

[0035] In this invention, the deflection mechanism includes a support shaft 25 fixed inside the conveyor frame structure 1. The support shaft 25 is located in the middle of a plurality of central shafts 18. A connecting frame 16 is rotatably sleeved on the support shaft 25. The tilting frame 10 is fixed on the connecting frame 16 at one end away from the support shaft 25. This ensures that the tilting frame 10 can rotate stably, while avoiding the rotation of the tilting frame 10 from affecting other components. A hydraulic cylinder assembly 17 is rotatably connected to one side of the connecting frame 16, and the lower end of the hydraulic cylinder assembly 17 is rotatably connected to the bottom of the conveyor frame structure 1. The extension and retraction of the hydraulic cylinder assembly 17 can drive the connecting frame 16 to rotate around the support shaft 25. That is, the connecting frame 16 is the power source for the tilting frame 10 to tilt. In actual operation, the extension and retraction time of the hydraulic cylinder assembly 17 needs to be fully considered. The control equipment of the hydraulic cylinder assembly 17 and the speed of the drive motor assembly 22, as well as the dimensions of the turntable 12, drive belt assembly 15, disc 13 and connecting rod 14 and other related components are input in order to calculate the corresponding movement clearance. The above is the prior art and there is no need to disclose the calculation. Alternatively, a detection component can be added to the device. When the central shaft 18 stops rotating, the hydraulic cylinder assembly 17 moves. At the same time, the movement interval of the central shaft 18 is detected, thereby controlling the extension and retraction time of the hydraulic cylinder assembly 17. That is, after the hydraulic cylinder assembly 17 has extended, the central shaft 18 operates. When the central shaft 18 stops operating, the hydraulic cylinder assembly 17 completes the retraction operation.

[0036] In this invention, the surround detection mechanism includes two support frames 3 fixed to one side of the conveyor frame structure 1. A motor assembly 4 is mounted on the upper end of each support frame 3. The motor assembly 4 can drive the bending component 20 to rotate, enabling surround imaging of the injection molded parts on the tray 27 and transmitting the captured information to the system for comparison. Specifically, in actual operation, a 3D model of a qualified injection molded part can be transmitted to the system first, or a qualified part can be scanned first, and the comparison can be based on the 3D model generated from the qualified part. The output shaft of the motor assembly 4 passes through the upper end of the support frame 3 and extends into the support frame 3. A bent part 20 is fixed to the end of the output shaft of component 4. A sliding part 23 is slidably installed on the output end of the bent part 20. A support shaft 24 is threaded onto one side of the sliding part 23. One side of the support shaft 24 abuts against the vertical end of the bent part 20. The horizontal ends of the sliding part 23 and the bent part 20 are respectively fixedly connected to two vision inspection devices 21. By rotating the support shaft 24, the distance between the support shaft 24 and the bent part 20 can be controlled, thereby adjusting the position of the side vision inspection device 21. This can accommodate injection molded parts of various specifications and ensure the quality of scanning. At the same time, the top vision inspection device 21 scans the top of the injection molded part. The two vision inspection devices 21 on the previous bending part 20 cannot scan the bottom of the injection molded part, but through the operation of the flip frame 10, the two vision inspection devices 21 on the next bending part 20 can complete the scanning of the bottom of the injection molded part in order to ensure the quality of the final 3D model.

[0037] This invention also proposes a multi-station omnidirectional visual inspection system for automotive injection molded parts, applicable to the multi-station omnidirectional visual inspection device for automotive injection molded parts as described above; the inspection system includes a PLC control module, which is connected to the aforementioned device; the PLC control module is connected to a 3D molding device, a comparison module, and an alarm device; the 3D molding device is equipped with an input device, which is connected to the aforementioned device; the system operation includes the following steps: S1. Component transportation: The drive motor assembly 22 can output power to make the disc 13 drive the connecting rod 14 to rotate. The rotation of the connecting rod 14 will intermittently collide with one of the stop rods 11, which can make the turntable 12 drive the drive belt assembly 15 to rotate. The drive belt assembly 15 can intermittently drive one of the central shafts 18 to rotate. That is, through the cooperation of the horizontal shaft 5, the worm gear 6 and the turbine 7, multiple central shafts 18 can rotate synchronously and intermittently, which can intermittently and directionally transport automotive injection molded parts. S2, Preliminary visual imaging: When the central shaft 18 stops rotating, when an automotive injection molded part is transported to a tray 27, the lifting hydraulic cylinder assembly 19 can push the tray 27, so that the automotive injection molded part is captured by two visual inspection devices 21 on one of the bending parts 20 in a surround-view imaging manner. S3, Flip and take another visual image: The hydraulic cylinder assembly 19 is reset so that the car injection molded part can continue to move to the flipping frame 10. The hydraulic cylinder assembly 17 can flip the flipping frame 10, so that the car injection molded part can be flipped so that its bottom is exposed. With the intermittent rotation of the central shaft 18, it can be moved to the next tray 27 so that the next hydraulic cylinder assembly 19 can rise and the two visual inspection devices 21 in the next bent part 20 can take pictures. S4. System Inspection: Set up a 3D molding equipment that can receive image data from four vision inspection devices 21 to generate 3D data of automotive injection molded parts, and input qualified 3D data of automotive injection molded parts for comparative inspection. S5. Error Handling: When a mismatch is detected in the scan, an alarm can be issued so that staff can handle the situation.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-station all-around visual inspection device for automotive injection molded parts, characterized in that: The system includes a conveyor frame structure (1), on which an intermittent drive mechanism is installed. A synchronization mechanism is installed on one side of the conveyor frame structure (1), and multiple central shafts (18) are installed on the synchronization mechanism, one of which is connected to the intermittent drive mechanism. Multiple central shafts (18) are jointly equipped with an installation and transportation mechanism. A deflection mechanism is installed inside the conveyor frame structure (1). A tilting frame (10) is provided on the deflection mechanism. Multiple conveying rollers (26) are installed at equal intervals at both ends of the tilting frame (10). The tilting frame (10) is connected to the installation and transportation mechanism. Two surround detection mechanisms are installed on one side of the conveyor frame structure (1), and two vision detection devices (21) are provided on the surround detection mechanism. The two surround inspection mechanisms are respectively connected to the two installation and transportation mechanisms; The visual inspection device (21) located at the upper end of the surrounding inspection mechanism is installed at the upper end of the installation and transportation mechanism; the visual inspection device (21) located on one side of the surrounding inspection mechanism is installed on one side of the installation and transportation mechanism.

2. The multi-station all-around visual inspection device for automobile injection molded parts according to claim 1, characterized in that: The intermittent drive mechanism includes a drive motor assembly (22) fixed on one side of the conveyor frame structure (1). A disc component (13) is fixed on the output shaft of the drive motor assembly (22). A connecting rod component (14) is fixed on one side of the disc component (13). A mounting shaft component (9) is rotatably sleeved on one side of the conveyor frame structure (1). A turntable component (12) is fixed on the mounting shaft component (9). Three stop rod components (11) are fixed at equal intervals on the turntable component (12). A drive belt assembly (15) is jointly installed on the mounting shaft component (9) and one of the central shaft components (18). The connecting rod (14) and one of the stop rods (11) are in contact.

3. The multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 2, characterized in that: The disc component (13) is eccentrically positioned on one side of the turntable component (12), and the drive motor assembly (22), output shaft, and mounting shaft component (9) are misaligned.

4. The multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 3, characterized in that: The disc component (13) and the drive belt assembly (15) are respectively disposed on both sides of the turntable component (12).

5. A multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 4, characterized in that: The synchronization mechanism includes a horizontal shaft (5) rotatably sleeved on the other side of the conveyor frame structure (1), a plurality of worm gears (6) are fixed at equal intervals on the horizontal shaft (5), one end of a plurality of central shafts (18) extends to the other side of the conveyor frame structure (1), and a turbine (7) is fixed to one end of the plurality of central shafts (18) extending to the other side of the conveyor frame structure (1), and the plurality of worm gears (6) mesh with the plurality of turbines (7) respectively.

6. A multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 5, characterized in that: The installation and transportation mechanism includes four roller shafts (2), which are respectively fixedly mounted on four central shafts (18); The remaining central shafts (18) are fixed with linkage shafts (8) at both ends. The remaining central shafts (18) are in pairs, with two sets of central shafts (18) located in the middle. The deflection mechanism is located in the middle of the two sets of central shafts (18) in the middle. The remaining two sets of central shaft components (18) are respectively located at both ends; Two of the four roller shafts (2) are respectively set at both ends of multiple central shafts (18); The other two roller shafts (2) are respectively set on both sides of the two sets of central shafts (18) located in the middle; Two lifting hydraulic cylinder assemblies (19) are fixed at the bottom inside the conveyor frame structure (1), and trays (27) are fixed at both output ends of the two lifting hydraulic cylinder assemblies (19).

7. A multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 6, characterized in that: The deflection mechanism includes a support shaft (25) fixed in the conveyor frame structure (1), the support shaft (25) being located in the middle of a plurality of central shafts (18), a connecting frame (16) being rotatably sleeved on the support shaft (25), and the flipping frame (10) being fixed on the connecting frame (16) at one end away from the support shaft (25); A hydraulic cylinder assembly (17) is rotatably connected to one side of the connecting frame (16), and the lower end of the hydraulic cylinder assembly (17) is rotatably connected to the bottom of the conveyor frame structure (1).

8. A multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 7, characterized in that: The surround detection mechanism includes two support frames (3) fixed on one side of the conveyor frame structure (1). A motor assembly (4) is installed on the upper end of the support frame (3). The output shaft of the motor assembly (4) passes through the upper end of the support frame (3) and extends into the support frame (3). A bending piece (20) is fixed at the end of the output shaft of the motor assembly (4). A sliding piece (23) is slidably installed on the output end of the bending piece (20). A support shaft (24) is threaded onto one side of the sliding piece (23). One side of the support shaft (24) abuts against the vertical end of the bending piece (20). The horizontal ends of the sliding piece (23) and the bending piece (20) are respectively fixedly connected to two vision inspection devices (21).

9. A multi-station omnidirectional visual inspection device for automotive injection molded parts according to claim 8, characterized in that: The distance between the connecting rod (14) and the mounting shaft (9) is greater than the distance between the stop rod (11) and the mounting shaft (9).

10. A multi-station omnidirectional vision inspection system for automotive injection molded parts, characterized in that, This invention relates to a multi-station omnidirectional visual inspection device for automotive injection molded parts as described in any one of claims 1-9; the inspection system includes a PLC control module connected to the aforementioned device; the PLC control module is connected to a 3D molding device, a comparison module, and an alarm device; the 3D molding device is equipped with an input device connected to the aforementioned device; the system operation includes the following steps: S1. Component transportation: The drive motor assembly (22) can output power to make the disc (13) drive the connecting rod (14) to rotate. The rotation of the connecting rod (14) will intermittently collide with one of the stop rods (11), which can make the turntable (12) drive the drive belt assembly (15) to rotate. The drive belt assembly (15) can intermittently drive one of the central shafts (18) to rotate. That is, through the cooperation of the horizontal shaft (5), the worm gear (6) and the turbine (7), multiple central shafts (18) can rotate synchronously and intermittently, which can intermittently and directionally transport automotive injection molded parts. S2, Preliminary visual imaging: When the central shaft (18) stops rotating, when an automotive injection molded part is transported to a tray (27), the lifting hydraulic cylinder assembly (19) can lift the tray (27), so that the automotive injection molded part is captured by two visual inspection devices (21) on one of the bending parts (20) in a surround-view imaging manner. S3, Flip and take another visual picture: The hydraulic cylinder assembly (19) is reset so that the car injection molded part can continue to move to the flipping frame (10). The hydraulic cylinder assembly (17) can flip the flipping frame (10), so that the car injection molded part can be flipped so that its bottom is exposed. With the intermittent rotation of the central shaft (18), it can be moved to the next tray (27) so that the next hydraulic cylinder assembly (19) can rise and the two visual inspection devices (21) in the next bending part (20) can take pictures. S4. System Inspection: Set up a 3D molding equipment that can receive shooting data from four vision inspection devices (21) so as to form 3D data of automotive injection molded parts and input qualified automotive injection molded parts 3D data for comparative inspection. S5. Error Handling: When a mismatch is detected in the scan, an alarm can be issued so that staff can handle the situation.

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