A product defect detection apparatus

Abstract

The utility model discloses a product defect detection equipment belongs to product quality detection technical field, and this detection equipment includes feeding robot, clamping unit, detection unit and discharging robot, and feeding robot will detect product group to snatch, and will detect product group and move to clamping unit place, and clamping unit will detect product group and clamping fixed, be equipped with drive unit on clamping unit, and drive unit can drive clamping assembly and move, and then clamping unit clamps detect product group and moves to detection unit place, and clamping unit can rotate, and clamping unit can cooperate detection unit detection detect product group's defect through moving and rotating. The utility model has realized the full process automation from online, detection to sorting, to reduce manual intervention significantly, improves detection efficiency greatly, and through the rotation and movement of clamping unit, can present the front, back, side and even the bottom details of the detection product to the detection camera in turn, ensure 360 degree dead angle detection.

Description

Technical Field

[0001] This utility model belongs to the field of product quality inspection technology, and in particular relates to a product defect detection equipment. Background Technology

[0002] In manufacturing, product defect detection is a key step in ensuring product quality, especially for small assembly parts produced in batches, such as doll legs, which require efficient and accurate detection equipment.

[0003] As a popular consumer product, the production quality of dolls directly impacts brand image and user experience. The legs, a key component, are crucial for quality control, with their appearance integrity, symmetry, and assembly quality being important indicators. Traditionally, defect detection in doll legs relied primarily on manual visual inspection. This method is not only inefficient and labor-intensive but also prone to missed or misjudged defects due to factors such as operator fatigue, making it difficult to meet the high demands of efficiency and consistency in modern mass production.

[0004] With the development of automation technology, machine vision inspection technology has been gradually applied to the inspection of appearance defects in industrial products. However, the legs of dolls are usually not single parts, but rather components composed of multiple leg parts, and their defects may exist from various angles.

[0005] Existing automated testing equipment often has the following limitations: (1) Ordinary fixed photography is difficult to capture images of all sides of the doll's legs without blind spots, thus affecting the comprehensiveness and accuracy of the detection. (2) The automation integration of the entire feeding, testing and sorting process is not high, and the connection between each link is not smooth, making it impossible to form an efficient and continuous production line.

[0006] Therefore, there is an urgent need to design a product defect detection device to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a product defect detection equipment that has the advantages of flexible multi-angle presentation and comprehensive image acquisition of the product group being inspected, thus solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the specific technical solution of this utility model for product defect detection equipment is as follows: A product defect detection equipment includes a loading robot, a clamping unit, a detection unit, and an unloading robot arranged sequentially along a first direction. The loading robot picks up a group of products to be inspected and moves it to the clamping unit, which clamps and fixes the group of products. The clamping unit is equipped with a drive unit that can drive the clamping components to move. Subsequently, the clamping unit moves the group of products to the detection unit. The clamping unit can rotate and can cooperate with the detection unit to detect defects in the group of products by moving and rotating. Afterward, the unloading robot clamps the inspected group of products and classifies and places them according to whether the group of products is qualified.

[0009] Furthermore, the testing product group includes multiple testing products.

[0010] Furthermore, the clamping unit includes a first clamping part, a second clamping part, and a third clamping part arranged sequentially along a first direction. All three clamping parts are rotatable. A drive unit is connected to the second clamping part, enabling the second clamping part to move the inspection product group on it. The loading robot first moves the clamped inspection product group to the first clamping part, where the first clamping part clamps and fixes the inspection product group. The second clamping part moves to a first position, where the first and second clamping parts rotate towards each other, and the second clamping part clamps the inspection product group held by the first clamping part. Subsequently, the second clamping part moves the inspection product group to the inspection unit. After inspection, the second clamping part moves to a second position, whereby the second and third clamping parts rotate towards each other, and the third clamping part clamps the inspection product group held by the second clamping part. The unloading robot clamps the inspection product group that has been inspected by the third clamping part.

[0011] Furthermore, the clamping part includes a bracket, a support frame is provided on the bracket, and multiple clamping claw assemblies are provided on the support frame. The multiple clamping claw assemblies can clamp the test product assembly, and the support frame can rotate relative to the bracket, so that the multiple clamping claw assemblies drive the test product assembly to rotate.

[0012] Furthermore, a rotating shaft is fixedly connected to the support frame, and the support frame is rotatably connected to the bracket through the rotating shaft. The bracket is equipped with a driving component, which drives the support frame to rotate relative to the bracket.

[0013] Furthermore, the drive unit includes a drive motor, the output end of which is fixedly connected to a lead screw, a sleeve is fitted on the lead screw, the sleeve is fixedly connected to a sliding frame, and the sliding frame is fixedly connected to the second clamping part. When the lead screw rotates, the sleeve drives the sliding frame to slide.

[0014] Furthermore, the drive unit also includes a slide rail, and the slide frame has a slot, through which the slide frame is slidably connected to the slide rail.

[0015] Furthermore, the detection unit includes a fixed frame, on which a connecting frame is provided. The connecting frame can slide relative to the fixed frame in a third direction. A detection camera group is provided on the connecting frame. The detection camera group can slide relative to the connecting frame in a fourth direction. The detection camera group can take pictures of the detection product group on the second clamping part from multiple angles and directions.

[0016] Furthermore, the second direction end of the clamping unit is provided with a material preparation tray, which is used to place the test product group to be tested. The loading robot grabs the test product group in the material preparation tray and places it at the clamping unit.

[0017] Furthermore, the clamping unit has two receiving trays at its first direction end. The two receiving trays are for placing qualified and unqualified test product groups, respectively. The unloading robot clamps the qualified and unqualified test product groups and places them in the two receiving trays, respectively.

[0018] This invention has the following advantages: The defect detection equipment, through the sequential layout of a loading robot, a clamping unit, a detection unit, and an unloading robot, achieves full automation from loading and detection to sorting. This significantly reduces manual intervention, stabilizes production rhythm, and greatly improves detection efficiency. Furthermore, through the rotation and movement of the clamping unit, all sides of the product being inspected, including the front, back, sides, and even bottom details, can be sequentially presented to the detection camera, ensuring 360-degree inspection without blind spots. This is particularly important for products with irregular shapes. Additionally, some defects in the inspected product, such as minor scratches or color differences, may only be most noticeable under specific angles and lighting conditions. Rotation and movement allow the detection unit to find and present the most favorable angle for identification of each part to be inspected, thereby improving the accuracy of defect identification. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the defect detection equipment of this utility model; Figure 2 This is a schematic diagram of the feeding robot and the material preparation tray of this utility model; Figure 3 This is a schematic diagram of the structure of the unloading robot and the receiving tray of this utility model; Figure 4 This is a schematic diagram of the structure of the clamping unit, detection unit, and driving unit of this utility model; Figure 5 This is a schematic diagram of the structure of the drive unit and the second clamping part of this utility model; Figure 6 This is a schematic diagram of the clamping unit of this utility model; Figure 7 This is a schematic diagram of the detection unit of this utility model; The markings in the diagram are as follows: 1. Loading robot; 2. Clamping unit; 21. First clamping part; 22. Second clamping part; 23. Third clamping part; 24. Bracket; 25. Support frame; 26. Clamping claw assembly; 27. Drive component; 3. Detection unit; 31. Fixing frame; 32. Connecting frame; 33. Detection camera assembly; 4. Drive unit; 41. Drive motor; 42. Lead screw; 43. Second limit block; 44. Sleeve; 45. Slide rail; 46. First limit block; 47. Sliding frame; 5. Receiving tray; 6. Unloading robot; 7. Material preparation tray; 8. Workbench. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0022] The following is a reference to the appendix. Figure 1 To be continued Figure 7 This invention describes a product defect detection device.

[0023] Existing automated testing equipment often has the following limitations: (1) Ordinary fixed photography is difficult to capture images of all sides of the product group without blind spots, thus affecting the comprehensiveness and accuracy of the inspection. (2) The automation integration of the entire feeding, testing and sorting process is not high, and the connection between each link is not smooth, making it impossible to form an efficient and continuous production line.

[0024] The product being tested can be a doll or a doll's leg; in other embodiments of this invention, it can also be other products.

[0025] Therefore, this testing equipment includes a loading robot 1, a clamping unit 2, a testing unit 3, and a unloading robot 6 arranged sequentially along the first direction A. The loading robot 1 grabs the testing product group and moves it to the clamping unit 2. The clamping unit 2 clamps and fixes the testing product group. The clamping unit 2 is equipped with a drive unit 4, which can drive the clamping components to move. Then, the clamping unit 2 clamps the testing product group and moves it to the testing unit 3. The clamping unit 2 can rotate. The clamping unit 2 can cooperate with the testing unit 3 to detect defects in the testing product group by moving and rotating. After that, the unloading robot 6 clamps the tested product group and classifies and places it according to whether the tested product group is qualified.

[0026] Specifically, the first direction A refers to the core transmission path of the testing product group on the tooling from loading to unloading.

[0027] This defect detection equipment, through the sequential arrangement of loading robot 1, clamping unit 2, detection unit 3, and unloading robot 6, achieves full automation from loading and detection to sorting, significantly reducing manual intervention, stabilizing production rhythm, and greatly improving detection efficiency. Furthermore, through the rotation and movement of clamping unit 2, all sides of the product being inspected, including the front, back, sides, and even bottom details, can be presented to the detection camera sequentially, ensuring 360-degree inspection without blind spots. This is particularly important for products with irregular shapes. Additionally, some defects in the inspected product, such as minor scratches or color differences, may only be most noticeable under specific angles and lighting conditions. Rotation and movement allow detection unit 3 to find and present the most favorable angle for identification of each part to be inspected, thereby improving the accuracy of defect identification.

[0028] Both the loading robot 1 and the unloading robot 6 are existing robotic arms. Their gripping method is preferably pneumatic adsorption gripping. In other embodiments of this utility model, they can also be gripped by mechanical clamping or other methods.

[0029] The testing product group includes multiple testing products, enabling the testing equipment to test multiple products at once. Compared with single-item testing, the testing capacity per unit time is significantly improved. Preferably, the testing product group includes five testing products. In other embodiments of this utility model, other numbers may be used, which can be set according to actual conditions.

[0030] The clamping unit 2 includes a first clamping part 21, a second clamping part 22, and a third clamping part 23 arranged sequentially along the first direction A. All three clamping parts are rotatable. The drive unit 4 is connected to the second clamping part 22, enabling it to move the inspection product group on it. The loading robot 1 first moves the clamped inspection product group to the first clamping part 21, whereby the first clamping part 21 clamps and fixes the inspection product group. Then, the second clamping part 22 moves to the first position. The first clamping part 21 and the second clamping part 22 rotate towards each other. The second clamping part 22 clamps the test product group held by the first clamping part 21. Then, the second clamping part 22 moves the test product group to the test unit 3. After the test is completed, the second clamping part 22 moves to the second position. Then, the second clamping part 22 and the third clamping part 23 rotate towards each other. The third clamping part 23 clamps the test product group held by the second clamping part 22. The unloading robot 6 clamps the test product group that has been tested by the third clamping part 23.

[0031] The arrangement of the first clamping part 21, the second clamping part 22, and the third clamping part 23 constitutes a simple production line. When the second clamping part 22 clamps the workpiece for inspection in the inspection unit 3, the first clamping part 21 can simultaneously prepare for the next loading, and the third clamping part 23 can prepare for unloading. This parallel operation mode eliminates equipment idle waiting time, makes the inspection process seamless, and further improves overall efficiency. Moreover, the drive unit 4 specifically controls the second clamping part 22 to carry the workpiece to the inspection unit 3 and makes it rotatable to cooperate with the inspection, ensuring that the workpiece can be accurately transported to the inspection position and can present the angle and position to be inspected as needed, laying the foundation for subsequent high-quality image acquisition.

[0032] The clamping part includes a bracket 24, a support frame 25 is provided on the bracket 24, and a plurality of clamping claw assemblies 26 are provided on the support frame 25. The plurality of clamping claw assemblies 26 can clamp the test product assembly. The support frame 25 can rotate relative to the bracket 24, so that the plurality of clamping claw assemblies 26 drive the test product assembly to rotate. Specifically, the number of the plurality of clamping claw assemblies 26 corresponds to the plurality of test products.

[0033] The gripper assembly 26 includes two grippers that can move towards or away from each other. When the two grippers grip the product to be tested, they move towards each other until they are gripped. When the two grippers release the product from gripping, they move away from each other. Specifically, regarding the driving method of the grippers, each gripper can be fixedly connected to a rack, and a first gear is provided between the two racks. The first gear meshes with both racks, thereby driving the gear to rotate via a motor, causing the racks to drive the grippers to move towards or away from each other. In other embodiments of this utility model, other methods can also be used to drive the two grippers.

[0034] A rotating shaft is fixedly connected to the support frame 25. The support frame 25 is rotatably connected to the bracket 24 via the rotating shaft. The bracket 24 is provided with a driving component 27, which drives the support frame 25 to rotate relative to the bracket 24. Specifically, the driving component 27 can be a motor. The output end of the motor is connected to a second gear, and a third gear is connected to the rotating shaft. The second gear and the third gear mesh to drive the support frame 25 to rotate relative to the bracket 24 when the motor is started. In other embodiments of this utility model, other driving methods can also be used.

[0035] The drive unit 4 includes a drive motor 41, the output end of which is fixedly connected to a lead screw 42. A sleeve 44 is fitted on the lead screw 42 and is fixedly connected to a sliding frame 47. The sliding frame 47 is fixedly connected to the second clamping part 22. When the lead screw 42 rotates, the sleeve 44 drives the sliding frame 47 to slide. Specifically, the drive unit 4 also includes a slide rail 45. A slot is provided on the sliding frame 47, and the sliding frame 47 is slidably connected to the slide rail 45 through the slot, thereby providing reliable guidance and support for the movement of the second clamping part 22. This can effectively prevent off-center loading or jamming during movement, ensure the stability of long-term operation, and withstand a certain radial torque.

[0036] The drive unit 4 also includes a first limiting block 46 and a second limiting block 43. When the sleeve 44 contacts the first limiting block 46, the second clamping part 22 is in the first position. When the sleeve 44 contacts the second limiting block 43, the second clamping part 22 is in the second position.

[0037] The detection unit 3 includes a fixed frame 31, on which a connecting frame 32 is provided. The connecting frame 32 can slide relative to the fixed frame 31 along a third direction C. A detection camera group 33 is provided on the connecting frame 32. The detection camera group 33 can slide relative to the connecting frame 32 along a fourth direction D. The detection camera group 33 can take pictures of the detection product group on the second clamping part from multiple angles and directions. Specifically, a first sliding groove is provided on the fixed frame 31, and the connecting frame 32 is slidably connected to the fixed frame 31 through the first sliding groove. A second sliding groove is provided on the connecting frame 32, and the detection camera group 33 is slidably connected to the connecting frame 32 through the second sliding groove, so as to facilitate the adjustment of the position of the detection camera group 33.

[0038] Specifically, the third direction C is the setting direction of the first slide groove on the fixed frame 31, and the detection camera group 33 changes its height by moving along the third direction C; the fourth direction D is the setting direction of the second slide groove on the connecting frame 32, and the detection camera group 33 changes its position by moving along the fourth direction D.

[0039] The inspection camera group 33 includes multiple inspection cameras, and the specific number of inspection cameras is the same as the specific number of inspection products in the inspection product group.

[0040] The clamping unit 2 has a material preparation tray 7 at the second direction B end. The material preparation tray 7 is used to place the test product group to be tested. The loading robot 1 grabs the test product group in the material preparation tray and places it into the clamping unit 2.

[0041] Specifically, the second direction B refers to the direction opposite to the first direction A on the horizontal plane.

[0042] The clamping unit 2 has two receiving trays 5 at its first direction A end. The two receiving trays 5 are respectively for placing qualified test product groups and unqualified test product groups. The unloading robot 6 clamps the qualified test product groups and unqualified test product groups and places them in the two receiving trays 5 respectively.

[0043] This testing equipment also includes a workbench 8, a feeding robot 1, a clamping unit 2, a drive unit 4, a testing unit 3, a receiving tray 5, a discharging robot 6, and a preparation tray 7, all of which are connected to the workbench 8.

[0044] The testing process of this testing equipment is as follows: S1. Start this tool; S2, PLC commands the feeding robot 1 to move to the preparation tray 7 to grab the inspection product group, and drives the grabbed inspection product group to move above the first clamping part 21, and notifies the PLC to prepare to release the material through I / O signal; Specifically, when the PLC is notified via I / O signal to prepare for feeding, the photoelectric sensor near the first clamping part 21 simultaneously detects that the detection product group has arrived.

[0045] S3. After receiving the sensor signal, the PLC issues a command to close the multiple gripping claw groups 26 of the first gripping part 21 to clamp the detection product group. The clamping signal is fed back to the PLC. After the PLC confirms that the first gripping part 21 has clamped, it sends a release signal to the loading robot 1. The loading robot 1 releases the detection product group and returns to the standby position. S4, the PLC commands the motor of the drive unit 4 to start, driving the second clamping part 22 to move to the first position. Then the PLC controls the drive members 27 of the first clamping part 21 and the second clamping part 22 to rotate in opposite directions, completing the handover of the inspection product group. Specifically, after the clamping claws of the second clamping part 22 close and clamp the test product group, the clamping claws of the first clamping part 21 release.

[0046] S5, PLC restarts drive unit 4, precisely moving the second clamping part 22 carrying the test product group to the test station below test unit 3; S6. The arrival sensor signal of the detection station triggers the detection process. The PLC controls the drive unit 27 and drive unit 4 of the second clamping part 22 according to the preset program, so that the support frame 25 drives the detection product group to rotate or move at a predetermined angle. S7. At each preset combination of angles and positions, the PLC sends a photo-taking command to the detection camera group 33. The detection camera group 33 simultaneously captures high-definition images. The image processing software analyzes the images in real time, detects defects such as surface scratches, color differences, and deformations, and sends the judgment results to the PLC. S8. After the test is completed, the PLC commands the drive unit 4 to move the second clamping part 22 to the second position. The PLC controls the second clamping part 22 and the third clamping part 23 to rotate towards each other, completing the transfer of the tested product group. Specifically, after the clamping claws of the third clamping part 23 close and clamp the test product group, the clamping claws of the second clamping part 22 release.

[0047] S9. The signal that the workpiece is transferred to the third clamping part 23 triggers the unloading process. The PLC sends an instruction to the unloading robot 6 according to the judgment result of the vision system and designates the target receiving tray 5. The unloading robot 6 takes the workpiece from the third clamping part 23 and accurately places it into the corresponding receiving tray 5 according to the instruction of the PLC.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A product defect detection equipment, characterized in that, The system includes a loading robot, a clamping unit, a detection unit, and an unloading robot arranged sequentially along a first direction. The loading robot picks up the product group to be inspected and moves it to the clamping unit. The clamping unit clamps and fixes the product group. The clamping unit is equipped with a drive unit that can drive the clamping components to move. Then, the clamping unit moves the product group to the detection unit. The clamping unit can rotate and can cooperate with the detection unit to detect defects in the product group by moving and rotating. Afterward, the unloading robot clamps the inspected product group and sorts and places it according to whether the product group is qualified.

2. The product defect detection equipment according to claim 1, characterized in that, The testing product group includes multiple testing products.

3. The product defect detection equipment according to claim 1, characterized in that, The clamping unit includes a first clamping part, a second clamping part, and a third clamping part arranged sequentially along a first direction. All three clamping parts are rotatable. A drive unit is connected to the second clamping part, enabling it to move the inspection product group on it. The loading robot first moves the clamped inspection product group to the first clamping part, where it clamps and fixes the inspection product group. The second clamping part moves to a first position, where it rotates towards the first clamping part, clamping the inspection product group held by the first clamping part. Subsequently, the second clamping part moves the inspection product group to the inspection unit. After inspection, the second clamping part moves to a second position, where it rotates towards the third clamping part, clamping the inspection product group held by the second clamping part. The unloading robot then clamps the inspection product group inspected by the third clamping part.

4. The product defect detection equipment according to claim 1, characterized in that, The clamping part includes a bracket, a support frame on the bracket, and multiple clamping claw assemblies on the support frame. The multiple clamping claw assemblies can clamp the test product assembly. The support frame can rotate relative to the bracket, so that the multiple clamping claw assemblies drive the test product assembly to rotate.

5. The product defect detection equipment according to claim 4, characterized in that, A rotating shaft is fixedly connected to the support frame, and the support frame is rotatably connected to the bracket through the rotating shaft. The bracket is equipped with a driving component, which drives the support frame to rotate relative to the bracket.

6. The product defect detection equipment according to claim 3, characterized in that, The drive unit includes a drive motor, the output end of which is fixedly connected to a lead screw, a sleeve is fitted on the lead screw, the sleeve is fixedly connected to a sliding frame, and the sliding frame is fixedly connected to a second clamping part. When the lead screw rotates, the sleeve drives the sliding frame to slide.

7. The product defect detection equipment according to claim 6, characterized in that, The drive unit also includes a slide rail, and the slide frame has a slot, through which the slide frame is slidably connected to the slide rail.

8. The product defect detection equipment according to claim 3, characterized in that, The detection unit includes a fixed frame, on which a connecting frame is provided. The connecting frame can slide relative to the fixed frame in a third direction. A detection camera group is provided on the connecting frame. The detection camera group can slide relative to the connecting frame in a fourth direction. The detection camera group can take pictures of the detection product group on the second clamping part from multiple angles and directions.

9. The product defect detection equipment according to claim 1, characterized in that, The second end of the clamping unit is equipped with a material preparation tray, which is used to place the test product group to be tested. The loading robot picks up the test product group in the material preparation tray and places it into the clamping unit.

10. The product defect detection equipment according to claim 1, characterized in that, The clamping unit has two receiving trays at its first direction end. The two receiving trays are for placing qualified and unqualified test product groups, respectively. The unloading robot clamps the qualified and unqualified test product groups and places them in the two receiving trays, respectively.

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