Workpiece defect detection device

Abstract

The utility model relates to the technical field of defect detection, in particular to a workpiece defect detection device which comprises a device base, a defect detection camera is arranged on the upper portion of the device base, the position of the defect detection camera is fixed, and a workpiece to be detected is arranged on one side of the detection end of the defect detection camera. A first clamping part and a second clamping part which are used for clamping the to-be-tested workpiece are arranged on the two sides of the to-be-tested workpiece respectively, the second clamping part and the first clamping part are the same in structure, parallel pneumatic claws are arranged at one end of the first clamping part and one end of the second clamping part, a connecting block is arranged at one end of the first clamping part, an inserting groove is formed in the connecting block, and a clamping groove is formed in the inserting groove. A supporting column fixed to the device base is arranged on one side of the to-be-tested workpiece, a linear servo module perpendicular to the supporting column and fixed to the supporting column is arranged at one end of the supporting column, a connecting plate is arranged on the linear servo module, an auxiliary motor is fixedly arranged on the surface of the connecting plate, and an inserting block is arranged at one end of the auxiliary motor. And the shape of the inserting block is matched with that of the slot in the connecting block.

Description

Technical Field

[0001] The utility model relates to the technical field of defect detection, in particular to a workpiece defect detection device. Background Art

[0002] In traditional industrial production, product quality inspection mainly relies on manual vision for inspection. This method is inefficient, costly and easily affected by subjective factors. With the development of machine vision technology, automated defect detection devices can provide more efficient and accurate detection solutions. At present, a Chinese patent with publication number CN219084770U discloses a multi-camera transparent object defect detection system, which includes an upper lens, a synchronous belt, a lower lens and a synchronous belt frame. The synchronous belt frame is equipped with a synchronous belt, an upper lens is arranged on the top of the synchronous belt, and a lower lens is arranged at the bottom of the synchronous belt. The upper lens and the lower lens are both arranged vertically toward one side of the synchronous belt. Several upper line light sources are arranged between the upper lens and the synchronous belt, and several lower line light sources are arranged between the synchronous belt and the lower lens.

[0003] Although this defect detection device optimizes the inspection time for large target products by using a dual-positioning overall constraint positioning method and adopts a hollow transmission synchronous belt design to reduce the interference of the support on the intermediate colloid and avoid secondary damage to the product to be inspected, ensuring high-efficiency, intelligent, and accurate visual inspection while ensuring high-speed product production, this device still has the following defects:

[0004] In order to achieve all-round detection of products without blind spots, this device is equipped with lenses at the upper and lower ends of the conveyor belt to detect surface defects of the products. However, the transmission method of the conveyor belt does not cause the workpiece to rotate. After the positions of the upper and lower lenses are fixed, only the top and bottom of the workpiece can be inspected. There are still blind spots in the detection. In addition, the device is equipped with two sets of lenses, and the cost is also relatively high. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a workpiece defect detection device, and the above technical objectives are achieved through the following technical solutions:

[0006] A workpiece defect detection device includes a device base, a defect detection camera is provided on the upper part of the device base, the position of the defect detection camera is fixed, a workpiece to be detected is provided on one side of the detection end of the defect detection camera, a first clamping part and a second clamping part are respectively provided on both sides of the workpiece to be detected for clamping the workpiece to be detected, the second clamping part has the same structure as the first clamping part, one end of the first clamping part and the second clamping part is provided with parallel air claws for controlling the movement of the two, the first clamping part and the second clamping part are controlled to perform opening and contraction actions, one end of the first clamping part is provided with a connecting block, the interior of the connecting block is provided with a slot, one side of the workpiece to be detected is provided with a support column fixed to the device base, one end of the support column is provided with a linear servo module arranged perpendicular to the support column and fixed to the support column, a connecting plate with controlled lateral movement is installed on the linear servo module, an auxiliary motor is fixed on the surface of the connecting plate, and an insert is fixed to the front end of the auxiliary motor through a coupling, the shape of the insert matches the shape of the slot inside the connecting block.

[0007] Furthermore, the structure of the first clamping part includes a clamping plate, a protrusion, a movable shaft, and a connecting rod. The clamping plate and the movable shaft are fixed to each other, the connecting rod and the protrusion are fixed to each other, the movable shaft is installed inside the protrusion through a bearing, and the connecting block and the movable shaft are fixed to each other.

[0008] Furthermore, a rotary cylinder is provided at one end of the parallel air claw, and a cylinder mounting plate is provided at one end of the rotary cylinder.

[0009] Furthermore, two groups of lifting blocks are fixed on the back of the cylinder mounting plate, and sliding base rods fixed on the device base are provided inside the lifting blocks. A lifting control cylinder fixed on the device base is also provided between the sliding base rods, and the control end of the lifting control cylinder is fixed to the bottom of the back of the cylinder mounting plate.

[0010] Furthermore, the linear servo module is composed of a servo motor, a track, a screw rod, and a slider. A track fixing is provided between the track and the support column. The slider is slidably assembled on the track. The servo motor is connected to the screw rod, and the screw rod is assembled with the slider. The linear servo module drives the screw rod to rotate through the servo motor to realize the lateral movement of the slider.

[0011] Furthermore, the outside of the defect detection camera is provided with a camera fixing frame for fixing the position of the defect detection camera, and a frame connecting piece is fixedly provided on one side of the camera fixing frame, one end of the frame connecting piece is fixed to the camera fixing frame, and the other end is a ring buckle structure, and a support rod fixed to the base of the device is provided inside the ring buckle of the frame connecting piece.

[0012] In summary, the present invention has the following beneficial effects:

[0013] This utility model uses a machine vision system to detect the size, shape, and defects of products, and can automatically identify surface defects of products. It has the advantages of high detection accuracy and high detection efficiency, making it easier to control product quality.

[0014] The utility model is designed with a set of auxiliary rotating devices that are separated from each other and can be quickly plugged in and installed. This device cooperates with the clamping part of the special structure to maintain the slow rotation of the workpiece to be tested, which facilitates the defect detection camera to perform all-round and no-dead-angle detection of the workpiece to be tested, which is beneficial to improve the detection accuracy and prevent the occurrence of missed judgments.

[0015] The utility model only needs to be equipped with one fixed detection camera to fully detect the surface conditions of various parts of the workpiece, and the economic cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application, but do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is an oblique view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a rear view of the utility model;

[0020] Figure 4 It is a side view of the present utility model.

[0021] In the figure, 1. Device base; 2. Defect detection camera; 3. Workpiece to be measured; 4. Parallel air grippers; 5. Connecting block; 6. Support column; 7. Connecting plate; 8. Auxiliary motor; 9. Insert block; 10. Clamping plate; 11. Bump; 12. Movable shaft; 13. Connecting rod; 14. Rotating cylinder; 15. Cylinder mounting plate; 16. Lifting block; 17. Sliding base rod; 18. Lifting control cylinder; 19. Servo motor; 20. Track; 21. Screw; 22. Slider; 23. Track fixing part; 24. Camera fixing frame; 25. Frame connecting part; 26. Support rod. DETAILED DESCRIPTION

[0022] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To the attached Figure 4 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0023] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0024] A workpiece defect detection device includes a device base 1, a defect detection camera 2 is provided on the upper part of the device base 1, and a camera fixing frame 24 is provided on the outside of the defect detection camera 2 to fix the position of the defect detection camera 2. The defect detection camera 2 is integrally inserted into the camera fixing frame 24, and the position of the defect detection camera 2 remains fixed as a whole. A frame connector 25 is fixed on one side of the camera fixing frame 24, one end of the frame connector 25 is fixed to the camera fixing frame 24, and the other end is a ring buckle structure, and a support rod 26 fixed to the device base 1 is provided inside the ring buckle of the frame connector 25, and the surface of the ring buckle is locked by bolts to fasten the frame connector 25 to the support rod 26.

[0025] A workpiece 3 to be measured is provided on one side of the detection end of the defect detection camera 2, and a first clamping part and a second clamping part for clamping the workpiece 3 to be measured are respectively provided on both sides of the workpiece 3 to be measured. The second clamping part has the same structure as the first clamping part, and the two are mirror-symmetrical with the workpiece 3 to be measured as the center. One end of the first clamping part and the second clamping part is provided with a parallel air gripper 4 for controlling the movement of the two. The first clamping part and the second clamping part are controlled by the parallel air gripper 4 to perform opening and contraction actions.

[0026] Preferably, the structure of the first clamping part includes a clamping plate 10, a protrusion 11, a movable shaft 12, and a connecting rod 13. The clamping plate 10 and the movable shaft 12 are fixed to each other, the connecting rod 13 and the protrusion 11 are fixed to each other, and the movable shaft 12 is installed inside the protrusion 11 through a bearing. Through the above structure, the assembly of the movable shaft 12 and the clamping plate 10 can rotate inside the protrusion 11. Then, when the clamping plates 10 in the first clamping part and the second clamping part clamp the workpiece 3 to be measured, if the movable shaft 12 rotates, the workpiece 3 to be measured will rotate synchronously.

[0027] A connecting block 5 is provided at one end of the first clamping part, and the connecting block 5 and the movable shaft 12 are fixed to each other. A slot is provided inside the connecting block 5. In addition, a support column 6 fixed to the device base 1 is provided on one side of the workpiece 3 to be measured, and a linear servo module is provided at one end of the support column 6, which is arranged perpendicular to the support column 6 and fixed on the support column 6. A connected plate 7 with controlled lateral movement is installed on the linear servo module, and an auxiliary motor 8 is fixed on the surface of the connecting plate 7. An insert block 9 is fixed to the front end of the auxiliary motor 8 through a coupling, and the shape of the insert block 9 matches the shape of the slot inside the connecting block 5.

[0028] The linear servo module consists of a servo motor 19, a track 20, a screw rod 21, and a slider 22. A track fixing part 23 is provided between the track 20 and the support column 6. The slider 22 is slidably assembled on the track 20. The servo motor 19 is connected to the screw rod 21, and the screw rod 21 is assembled with the slider 22. The linear servo module drives the screw rod 21 to rotate through the servo motor 19 to realize the lateral movement of the slider 22.

[0029] A rotating cylinder 14 is provided at one end of the parallel air claw 4, and a cylinder mounting plate 15 is provided at one end of the rotating cylinder 14. Two sets of lifting blocks 16 are fixed on the back of the cylinder mounting plate 15. The interior of the lifting block 16 is provided with a sliding base rod 17 fixed to the device base 1, and a lifting control cylinder 18 fixed to the device base 1 is also provided between the sliding base rods 17. The control end of the lifting control cylinder 18 is fixed to the bottom of the back of the cylinder mounting plate 15.

[0030] In the embodiment of the present invention, the lifting control cylinder 18 is pushed upward, and by controlling the cylinder mounting plate 15, the rotating cylinder 14, the parallel air claw 4, the first clamping part, and the second clamping part are driven to rise, and the workpiece 3 to be measured is removed from other workstations and clamped. Then the lifting control cylinder 18 controls the cylinder mounting plate 15 to descend, and drives the workpiece 3 to be measured to descend until the connecting block 5 at one end of the first clamping part and the plug block 9 at one end of the auxiliary motor 8 are in the same horizontal position. At this time, the linear servo module controls the connecting plate 7 to move horizontally, and inserts the plug block 9 into the slot of the connecting block 5. Then the auxiliary motor 8 starts to work, and drives the connecting block 5 to rotate synchronously by controlling the plug block 9 to rotate. Since the connecting block 5 is fixed to the movable shaft 12, the clamped workpiece 3 to be measured will also rotate synchronously at this time. Since the position of the workpiece 3 to be measured is facing the defect detection camera 2, the defect detection camera 2 captures the surface information of the workpiece 3 to be measured during the rotation of the workpiece 3 to be measured.

[0031] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this. For technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, any expansion and replacement of operating methods and data should fall within the scope of protection of the present invention.

Claims

1. A workpiece defect detection device, characterized in that: The invention comprises a device base (1), wherein a defect detection camera (2) is provided on the upper part of the device base (1), the position of the defect detection camera (2) is fixed, a workpiece to be detected (3) is provided on one side of the detection end of the defect detection camera (2), a first clamping part and a second clamping part are provided on both sides of the workpiece to be detected (3), respectively, the second clamping part has the same structure as the first clamping part, one end of the first clamping part and the second clamping part is provided with a parallel air claw (4) for controlling the movement of the two, the first clamping part and the second clamping part are controlled to perform opening and contraction actions, and the first clamping part is provided with a first clamping part and a second clamping part. A connecting block (5) is provided at one end, a slot is provided inside the connecting block (5), a support column (6) fixed on the device base (1) is provided on one side of the workpiece to be measured (3), a linear servo module is provided at one end of the support column (6) and is arranged perpendicular to the support column (6) and fixed on the support column (6), a connecting plate (7) with controlled transverse movement is installed on the linear servo module, an auxiliary motor (8) is fixed on the surface of the connecting plate (7), and an insert block (9) is fixed at the front end of the auxiliary motor (8) through a coupling, and the shape of the insert block (9) matches the shape of the slot inside the connecting block (5).

2. A workpiece defect detection device according to claim 1, characterized in that: The structure of the first clamping portion includes a clamping piece (10), a protrusion (11), a movable shaft (12), and a connecting rod (13); the clamping piece (10) and the movable shaft (12) are fixed to each other; the connecting rod (13) and the protrusion (11) are fixed to each other; the movable shaft (12) is installed inside the protrusion (11) through a bearing; and the connecting block (5) and the movable shaft (12) are fixed to each other.

3. The workpiece defect detection device according to claim 1, characterized in that: A rotary cylinder (14) is provided at one end of the parallel air claw (4), and a cylinder mounting plate (15) is provided at one end of the rotary cylinder (14).

4. The workpiece defect detection device according to claim 3, characterized in that: Two sets of lifting blocks (16) are fixedly provided on the back of the cylinder mounting plate (15), and sliding base rods (17) fixed on the device base (1) are provided inside the lifting blocks (16). A lifting control cylinder (18) fixed on the device base (1) is also provided between the sliding base rods (17), and the control end of the lifting control cylinder (18) is fixed to the bottom of the back of the cylinder mounting plate (15).

5. The workpiece defect detection device according to claim 1, characterized in that: The linear servo module is composed of a servo motor (19), a track (20), a screw rod (21), and a slider (22). A track fixing member (23) is provided between the track (20) and the support column (6). The slider (22) is slidably assembled on the track (20). The servo motor (19) is connected to the screw rod (21), and the screw rod (21) is assembled with the slider (22). The linear servo module drives the screw rod (21) to rotate through the servo motor (19), thereby realizing the lateral movement of the slider (22).

6. The workpiece defect detection device according to claim 1, characterized in that: The outside of the defect detection camera (2) is provided with a camera fixing frame (24) for fixing the position of the defect detection camera (2), and a frame connecting member (25) is fixedly provided on one side of the camera fixing frame (24), one end of the frame connecting member (25) is fixed to the camera fixing frame (24), and the other end is a ring buckle structure, and a support rod (26) fixed to the device base (1) is provided inside the ring buckle of the frame connecting member (25).

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