A device for detecting appearance defects of a precision injection molded part

Abstract

The utility model relates to the field of precision injection molding parts, concretely relates to a precision injection molding part appearance defect detection device, including detection stage, the main part for precision injection molding part detection, drive display controller, the outside fixed setting in detection stage is used for detecting data observation, and the top fixed mounting of detection stage has appearance detection frame. The utility model is provided with appearance detection frame, fixing frame, prism frame, reflecting prism, spectral enhancement industry camera, photon counting sensor and exposure lamp, when using the precision injection molding part appearance defect detection device, can first let exposure lamp expose the workpiece below, when the appearance of precision injection molding part appears tiny defect, the halo of defect place is synchronously reflected by prism frame and reflecting prism before and after precision injection molding part, the photon counting sensor on the both sides of spectral enhancement industry camera receives and captures the halo, and passes data to drive display controller.

Description

Technical Field

[0001] This utility model relates to the field of precision injection molded parts, and specifically to a device for detecting appearance defects in precision injection molded parts. Background Technology

[0002] Precision injection molded parts are plastic products manufactured using high-precision injection molding technology. They must simultaneously meet the triple standards of extreme dimensional accuracy, excellent surface quality, and complex structural design. Precision injection molded part appearance defect detection devices are intelligent inspection equipment specifically developed for high-precision injection molded products. Through optical imaging, image processing algorithms, and artificial intelligence analysis technology, they perform non-contact, high-efficiency, and high-precision defect detection on the surface of injection molded parts. Their core objective is to replace manual visual inspection and achieve automatic identification and classification of appearance defects such as bubbles, cracks, scratches, burrs, deformation, and color differences, ensuring product quality stability and production process controllability.

[0003] A search revealed an instrument appearance defect detection device (CN221303165U). This device includes a vision inspection machine and a conveyor. The conveyor passes through the vision inspection machine. Multiple sets of second cameras are fixedly installed on the upper part of the inner walls on both sides of the vision inspection machine. A first camera is fixedly installed on the inner wall of the right front and back sides of the vision inspection machine. A mounting plate is fixedly installed on the top inner wall of the vision inspection machine. A gear ring is fixedly installed on the bottom surface of the mounting plate. A movable work box and a movable storage box are slidably connected to both sides of the bottom surface of the mounting plate. This instrument appearance defect detection device, by setting up movable cameras, a vision inspection machine, and a conveyor, allows the movable work box to move the movable storage box via gears, a gear ring, and a connecting ring when the hub motor is started. The movable cameras on the movable work box and the movable storage box will also start working, thus enabling comprehensive imaging of the instrument appearance on the conveyor.

[0004] Existing precision injection molded parts appearance defect detection devices only scan the appearance of precision injection molded parts using a visual inspection camera. This detection method is too simple and lacks precision, making it difficult to distinguish small defects. Moreover, the re-inspection rate is high. Furthermore, the precision injection molded parts appearance defect detection devices in the aforementioned comparative cases also lack means to improve detection accuracy and efficiency. This long-term use also delays the overall precision injection molded parts appearance defect detection time and affects the subsequent use of precision injection molded parts.

[0005] Therefore, it is necessary to invent a precision injection molded part appearance defect detection device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a precision injection molded part appearance defect detection device. By using an appearance inspection frame, a fixing frame, a prism frame, a reflecting prism, a spectral enhancement industrial camera, a photon counting sensor, and an exposure lamp, this device improves detection accuracy and efficiency. This avoids the problems of traditional devices relying on manual visual inspection or the insufficient accuracy of ordinary industrial cameras, which can lead to missed detections. It can also accurately identify minute defects in precision injection molded parts. Furthermore, this detection method has a low re-inspection rate, increasing the detection speed of appearance defects in precision injection molded parts and ensuring the precision of the parts themselves. This addresses the problem in existing precision injection molded part appearance defect detection devices that only scan the appearance of the parts using a visual inspection camera. Such detection methods are too simplistic and lack accuracy, making it difficult to distinguish small defects, and the re-inspection rate is high. Moreover, the precision injection molded part appearance defect detection devices in the aforementioned comparative cases also lack means to improve detection accuracy and efficiency, which, in the long run, delays the overall precision injection molded part appearance defect detection time and affects the subsequent use of the precision injection molded parts.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a precision injection molded part appearance defect detection device, including a detection table and a main body for precision injection molded part detection;

[0008] A drive display controller is fixedly installed on the outside of the testing station for observing testing data. An appearance inspection frame is fixedly installed on the top of the testing station. Fixing frames are fixedly installed on the front and rear of the appearance inspection frame. A prism frame is threadedly connected to the outside of the fixing frame. A reflecting prism is fixedly installed inside the prism frame.

[0009] A longitudinal electric slide rail is fixedly installed above the appearance inspection frame and is used for external sliding connection of a longitudinal electric slide sleeve. A displacement plate is fixedly installed at the bottom of the longitudinal electric slide sleeve. A transverse electric slide rail is fixedly installed at the bottom of the displacement plate. A transverse electric slide sleeve is slidably connected to the outside of the transverse electric slide rail. A defect detection seat is fixedly installed at the bottom of the transverse electric slide sleeve.

[0010] A telescopic cylinder is fixedly installed at the bottom of the defect detection seat for fixing the bottom end of a two-way plate. A spectral enhancement industrial camera is fixedly installed at the bottom of the two-way plate. Photon counting sensors are fixedly installed on both sides of the external surface of the spectral enhancement industrial camera. Mounting plates are fixedly installed on both sides of the bottom of the two-way plate, and exposure lamps are fixedly installed on the bottom of each mounting plate.

[0011] Preferably, a detection electric slide rail is fixedly installed above the detection platform, a detection electric slide sleeve is slidably connected to the outside of the detection electric slide rail, a placement plate is fixedly installed above the detection electric slide sleeve, and a precision injection molded part is placed on the placement plate.

[0012] Preferably, the reflecting prism is fixedly connected to the prism frame, and the prism frame is symmetrically arranged about the central axis of the appearance inspection frame.

[0013] Preferably, both sides of the appearance inspection frame are threadedly connected to a supplementary lighting frame, and a supplementary light is fixedly installed inside the supplementary lighting frame.

[0014] Preferably, the number of fill lights is set to multiple, and the multiple fill lights are distributed at equal intervals on the fill light frame.

[0015] Preferably, the spectral enhancement industrial camera is slidably connected to the appearance inspection frame, and the exposure lamps are symmetrically arranged around the central axis of the bidirectional plate.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] This utility model includes an appearance inspection frame, a fixing frame, a prism frame, a reflecting prism, a spectral enhancement industrial camera, a photon counting sensor, and an exposure lamp. When using this precision injection molded part appearance defect detection device, the exposure lamp can first expose the workpiece below. When a small defect appears on the appearance of the precision injection molded part, the halo at the defect location will be synchronously reflected by the prism frame and reflecting prism located in front of and behind the precision injection molded part. In this way, the photon counting sensors on both sides of the spectral enhancement industrial camera receive and capture the halo and transmit the data to the drive display controller. At this time, the drive display controller can then perform detailed detection of the current position by moving the spectral enhancement industrial camera based on the reflected halo. This combination improves the detection accuracy and efficiency of the precision injection molded part appearance defect detection device. This avoids the problem of detection omissions caused by the reliance on manual visual inspection or the insufficient detection accuracy of ordinary industrial cameras in traditional devices. Moreover, it can accurately identify even small defects in precision injection molded parts. At the same time, this detection method has a low re-inspection rate, improves the detection speed of appearance defects in precision injection molded parts, and ensures the precision of the precision injection molded parts themselves.

[0018] This utility model includes a testing platform, a drive display controller, a testing electric slide rail, a testing electric slide sleeve, a placement plate, a precision injection molded part, and a visual inspection frame. When using this precision injection molded part visual defect detection device, the precision injection molded part can be fixed on the placement plate on the other side of the testing platform using external clamps. Then, the testing electric slide rail and testing electric slide sleeve drive the precision injection molded part into the visual inspection frame for inspection. After inspection, the precision injection molded part is ejected. This automatic operation of the entire inspection process improves the detection efficiency of the precision injection molded part visual defect detection device, reduces manual operation steps, and further enhances the consistency of inspection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the placement plate structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the prism frame structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the defect detection seat structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the spectral enhancement industrial camera of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Inspection table; 2. Drive display controller; 3. Inspection electric slide rail; 4. Inspection electric sliding sleeve; 5. Placement plate; 6. Precision injection molded part; 7. Appearance inspection frame; 8. Fixing frame; 9. Prism frame; 10. Reflecting prism; 11. Lighting frame; 12. Lighting lamp; 13. Longitudinal electric slide rail; 14. Longitudinal electric sliding sleeve; 15. Displacement plate; 16. Transverse electric slide rail; 17. Transverse electric sliding sleeve; 18. Defect detection seat; 19. Telescopic cylinder; 20. Two-way plate; 21. Spectral enhancement industrial camera; 22. Photon counting sensor; 23. Mounting plate; 24. Exposure lamp. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-5 The device shown is a precision injection molded part appearance defect detection device, including a detection table 1 and a main body for precision injection molded part detection;

[0029] The drive display controller 2 is fixedly installed on the outside of the test station 1 for observing test data. The appearance inspection frame 7 is fixedly installed on the top of the test station 1. The front and rear of the appearance inspection frame 7 are fixedly installed on the inside. The external thread of the fixed frame 8 is connected to the prism frame 9. The internal thread of the prism frame 9 is fixedly installed with a reflecting prism 10.

[0030] The longitudinal electric slide rail 13 is fixedly installed above the appearance inspection frame 7 and is used to externally slide the longitudinal electric slide sleeve 14. The bottom of the longitudinal electric slide sleeve 14 is fixedly installed with a displacement plate 15. The bottom of the displacement plate 15 is fixedly installed with a transverse electric slide rail 16. The transverse electric slide rail 16 is externally slidably connected with a transverse electric slide sleeve 17. The bottom of the transverse electric slide sleeve 17 is fixedly installed with a defect detection seat 18.

[0031] Telescopic cylinder 19 is fixedly installed at the bottom of defect detection seat 18 for fixed connection of bidirectional plate 20 at the bottom. Spectral enhancement industrial camera 21 is fixedly installed at the bottom of bidirectional plate 20. Photon counting sensors 22 are fixedly installed on both sides of the external exterior of spectral enhancement industrial camera 21. Mounting plates 23 are fixedly installed on both sides of the bottom of bidirectional plate 20. Exposure lamps 24 are fixedly installed at the bottom of each mounting plate 23. The exposure lamps 24 can first expose the workpiece below. When a small defect appears on the appearance of the precision injection molded part, the halo at the defect will be synchronously reflected by the prism frame 9 and the reflecting prism 10 located in front of and behind the precision injection molded part. In this way, the photon counting sensors 22 on both sides of spectral enhancement industrial camera 21 receive and capture the halo and transmit the data to drive display controller 2. At this time, drive display controller 2 can perform detailed detection of the current position by moving spectral enhancement industrial camera 21 according to the reflected halo.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, a detection electric slide rail 3 is fixedly installed above the detection table 1. A detection electric slide sleeve 4 is slidably connected to the outside of the detection electric slide rail 3. A placement plate 5 is fixedly installed above the detection electric slide sleeve 4. A precision injection molded part 6 is placed on the placement plate 5. The precision injection molded part can be fixed on the placement plate 5 on the other side of the detection table 1 by external clamps. Then, the detection electric slide rail 3 and the detection electric slide sleeve 4 can drive the precision injection molded part into the appearance inspection frame 7 for inspection. A reflecting prism 10 is fixedly connected to a prism frame 9. The prism frame 9 is symmetrically arranged about the central axis of the appearance inspection frame 7. The precision injection molded part can be fixed on the placement plate 5 on the other side of the detection table 1 by external clamps. Then, the detection electric slide rail 3 and the detection electric slide sleeve 4 can drive the precision injection molded part into the appearance inspection frame 7 for inspection.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 5As shown, both sides of the internal surface of the appearance inspection frame 7 are threadedly connected to a supplementary lighting frame 11. Supplementary lights 12 are fixedly installed inside each supplementary lighting frame 11. The supplementary lights 12 can illuminate the current inspection space according to the current inspection requirements, increasing the brightness of the current inspection space, thereby allowing the photon counting sensor 22 to better capture the reflected halo. Multiple supplementary lights 12 are set, and they are evenly distributed on the supplementary lighting frame 11. The overall structure of the supplementary lights 12 is simple and easy to operate, and it is convenient for maintenance personnel to replace them in time if a fault occurs. The spectral enhancement industrial camera 21 is slidably connected to the appearance inspection frame 7. The exposure lamps 24 are symmetrically arranged around the central axis of the bidirectional plate 20. Based on the reflected halo, the spectral enhancement industrial camera 21 can be moved to perform detailed inspection of the current position, thereby improving the accuracy of the appearance defect detection of the precision injection molded part.

[0034] The working principle of this practical application is as follows: First, connect the external power supply and take out the precision injection molded part. It can be fixed on the plate 5 on the other side of the inspection table 1 using external clamps. Then, the inspection electric slide rail 3 and inspection electric sliding sleeve 4 move the precision injection molded part into the appearance inspection frame 7 for inspection. Next, according to the current inspection needs, turn on the supplementary lights 12 on both sides. The supplementary lights 12 illuminate the current inspection space, increasing its brightness, thus allowing the photon counting sensor 22 to better capture the reflected halo. Then, turn on the switches of the longitudinal electric slide rail 13 and the transverse electric slide rail 16, driving the defect detection seat 18 above the precision injection molded part. Then, turn on the switch of the telescopic cylinder 19, lowering the bidirectional plate 20. At this time, the exposure lamp 24 can expose the workpiece below. When a small defect appears on the appearance of the precision injection molded part, the halo at the defect will be synchronously reflected by the prism frame 9 and the reflecting prism 10 located in front of and behind the precision injection molded part. Thus, the photon counting sensors 22 on both sides of the spectral enhancement industrial camera 21 capture the halo. The device receives and captures data, which is then transmitted to the drive display controller 2. The drive display controller 2 can then perform detailed inspection of the current position based on the reflected halo using the moving spectral enhancement industrial camera 21. This improves the inspection accuracy and efficiency of the precision injection molded part appearance defect detection device, avoiding the problems of missed inspections caused by manual visual inspection or insufficient inspection accuracy of ordinary industrial cameras in traditional devices. After the precision injection molded part is confirmed to have appearance defects by the spectral enhancement industrial camera 21, the external operator can mark the current precision injection molded part and push it out through the detection electric slide rail 3 to proceed to the next precision injection molded part appearance inspection. Finally, after completing the installation and use of the precision injection molded part appearance defect detection device according to the above operations, turn off the switch of the detection electric slide rail 3, turn off the switch of the supplementary light 12, turn off the switches of the longitudinal electric slide rail 13 and the transverse electric slide rail 16, and turn off the switch of the telescopic cylinder 19. If it is not used for a long time, simply disconnect the external power supply. This completes the use of the precision injection molded part appearance defect detection device.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precision injection molded part appearance defect detection device, characterized in that: include Inspection station (1), the main body used for inspection of precision injection molded parts; A drive display controller (2) is fixedly installed outside the detection platform (1) for observing detection data. An appearance inspection frame (7) is fixedly installed above the detection platform (1). Fixing frames (8) are fixedly installed inside the appearance inspection frame (7) at the front and rear. A prism frame (9) is threadedly connected to the outside of the fixing frame (8). A reflecting prism (10) is fixedly installed inside the prism frame (9). A longitudinal electric slide rail (13) is fixedly installed above the appearance inspection frame (7) for external sliding connection of a longitudinal electric slide sleeve (14). A displacement plate (15) is fixedly installed at the bottom of the longitudinal electric slide sleeve (14). A transverse electric slide rail (16) is fixedly installed at the bottom of the displacement plate (15). A transverse electric slide sleeve (17) is slidably connected to the outside of the transverse electric slide rail (16). A defect detection seat (18) is fixedly installed at the bottom of the transverse electric slide sleeve (17). A telescopic cylinder (19) is fixedly installed at the bottom of the defect detection seat (18) for fixing the bottom end of the bidirectional plate (20). A spectral enhancement industrial camera (21) is fixedly installed at the bottom of the bidirectional plate (20). Photon counting sensors (22) are fixedly installed on both sides of the external side of the spectral enhancement industrial camera (21). Mounting plates (23) are fixedly installed on both sides of the bottom of the bidirectional plate (20). Exposure lamps (24) are fixedly installed at the bottom of each mounting plate (23).

2. The precision injection molded part appearance defect detection device according to claim 1, characterized in that: A detection electric slide rail (3) is fixedly installed above the detection platform (1). A detection electric slide sleeve (4) is slidably connected to the outside of the detection electric slide rail (3). A placement plate (5) is fixedly installed above the detection electric slide sleeve (4). A precision injection molded part (6) is placed above the placement plate (5).

3. The precision injection molded part appearance defect detection device according to claim 1, characterized in that: The reflecting prism (10) is fixedly connected to the prism frame (9), and the prism frame (9) is symmetrically arranged with respect to the central axis of the appearance inspection frame (7).

4. The precision injection molded part appearance defect detection device according to claim 1, characterized in that: Both sides of the appearance inspection frame (7) are threadedly connected to a supplementary lighting frame (11), and a supplementary lighting lamp (12) is fixedly installed inside the supplementary lighting frame (11).

5. The precision injection molded part appearance defect detection device according to claim 4, characterized in that: The number of fill lights (12) is set to multiple, and the multiple fill lights (12) are distributed at equal intervals on the fill light frame (11).

6. The precision injection molded part appearance defect detection device according to claim 1, characterized in that: The spectral enhancement industrial camera (21) is slidably connected to the appearance inspection frame (7), and the exposure lamp (24) is symmetrically arranged with respect to the central axis of the bidirectional plate (20).

Images