Product defect detection device

Abstract

The utility model discloses a product defect detection device which comprises a portal frame, a CCD camera installed at the bottom of a top plate of the portal frame and a clamping mechanism located on one side of the CCD camera and used for clamping products, one side of the portal frame is provided with a switching mechanism used for switching product detection faces, and the top of the portal frame is further provided with a lifting cylinder. A piston rod of the lifting cylinder is connected with a movable support, the bottom of the movable support is connected with a movable plate, and one side of the clamping mechanism is provided with a suction assembly used for sucking products. The switching mechanism is composed of a double-shaft motor, a power assembly and a switching rod. The double-shaft motor is installed on the top of the moving plate. Through cooperative use of the switching mechanism, the clamping mechanism and the suction assembly, the detection surface of a product can be changed, the detection device can be suitable for the product with multiple surfaces needing to be detected, the use number of CCD cameras can be reduced, and the detection device is more flexible to use and wider in application range.

Description

Technical Field

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

[0002] The basic principle of visual imaging of CCD cameras is that when light shines on the CCD chip, photons will stimulate a certain number of electrons. The pixel unit on the CCD chip is composed of a photosensitive unit and a charge transfer unit. The photosensitive unit is responsible for converting light into electrons, and the charge transfer unit is responsible for transferring electrons from the photosensitive unit to the output end. The CCD chip has charge amplification and reading functions. After the charge transfer unit transfers the electrons to the output end, the charge amplifier will amplify the electrons, and then the analog-to-digital converter will convert the amplified charge into a digital signal. The image processing circuit in the CCD camera will process the digital signal, including denoising, enhancement, color correction, etc. Finally, the processed image signal will be output to the display device or storage device through the output interface for users to view or store.

[0003] At present, in terms of defect detection before products leave the factory, most of the methods used are to detect product defects by processing and comparing the collected images using visual inspection devices based on CCD cameras and computers. However, a CCD camera generally only captures one side of the product to detect surface defects. For products that need to be inspected on multiple sides, multiple CCD cameras need to be set up for inspection, which can easily lead to waste. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a product defect detection device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a product defect detection device, comprising a gantry, a CCD camera installed at the bottom of the gantry top plate, and a clamping mechanism for clamping products located at one side of the CCD camera, one side of the gantry is provided with a switching mechanism for switching the product detection surface, the top of the gantry is also provided with a lifting cylinder, the piston rod of the lifting cylinder is connected with a moving bracket, the bottom of the moving bracket is connected with a moving plate, and one side of the clamping mechanism is provided with a suction component for sucking products;

[0007] The switching mechanism is composed of a double-axis motor, a power assembly and a switching rod, and the double-axis motor is installed on the top of the moving plate.

[0008] As a preferred technical solution of the utility model, the power assembly includes two power rods connected to the output shafts of the dual-axis motor, two mutually meshing transmission gears, a transmission rod rotatably arranged on the upper vertical plate of the movable plate, and an intermediate rod. The two transmission gears are respectively sleeved and fixed on the transmission rod and the intermediate rod. A fan gear meshing with the transmission gear on the intermediate rod is sleeved and fixed on the outer wall of one of the power rods.

[0009] As an optimal technical solution of the present utility model, the switching mechanism also includes a linkage rod rotatably arranged on the lower vertical plate of the movable plate and a switching cylinder installed at the bottom of the top plate of the movable bracket. One end of the linkage rod is transmission-connected to the transmission rod through a transmission belt, and the other end is installed with a telescopic rod. The piston rod of the telescopic rod is connected with a clamping block, and the piston rod of the switching cylinder is connected with a U-shaped mounting bracket. A movable rod is penetrated on the U-shaped mounting bracket, and a bearing is provided at the connection between the movable rod and the U-shaped mounting bracket. A clamping groove which is clamped with the clamping block is opened at one end of the movable rod.

[0010] As a preferred technical solution of the utility model, two symmetrically distributed L-shaped mounting plates are provided on the outer side of the movable plate, and the two ends of the switching rod pass through the L-shaped mounting plates and extend outside the L-shaped mounting plates. A bearing is provided at the connection between the switching rod and the L-shaped mounting plate. The switching rod is connected to the power rod through a transmission belt. Two threaded interfaces are provided on the outer wall of the switching rod, and a connecting rod is screwed to one end of the threaded interface.

[0011] As a preferred technical solution of the utility model, the clamping mechanism includes a clamping bracket, a bidirectional screw rotatably arranged on the inner side of the clamping bracket, and a clamping motor installed at one end of the clamping bracket, one end of the bidirectional screw is fixedly connected to the output shaft of the clamping motor, and nut slides are sleeved on the two opposite threaded parts of the bidirectional screw. One side of the nut slide is connected to a clamp for clamping the product through a connecting bracket, and two symmetrically distributed mounting through holes are opened on the top of the clamping bracket and the lower end of the connecting rod is fixedly connected to the clamping bracket through a nut.

[0012] As a preferred technical solution of the utility model, the suction assembly consists of a vacuum suction cup and a connecting block installed on the top of the vacuum suction cup. The connecting block is located on the inner side of the U-shaped mounting bracket and is rotatably connected to the U-shaped mounting bracket via a movable rod.

[0013] The beneficial effects of the utility model are:

[0014] 1. This product defect detection device can change the detection surface of the product through the coordinated use of the switching mechanism, the clamping mechanism and the suction component. It can be applied to products that need to be detected on multiple surfaces. It can not only reduce the number of CCD cameras used, but also be more flexible in use and have a wider range of applications.

[0015] 2. This product defect detection device controls the rotation of the bidirectional lead screw through the clamping motor, so that the nut slide moves with the clamp through the connecting bracket, and the product is clamped by the clamp. There is no need to manually fix the product, which can save manpower and is suitable for assembly line production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a first-view structural diagram of a product defect detection device of the utility model;

[0018] Figure 2 This is a second perspective structural schematic diagram of a product defect detection device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a clamping mechanism of a product defect detection device of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the connection structure of a gantry and a switching mechanism of a product defect detection device.

[0021] In the figure: 1. gantry; 2. lifting cylinder; 3. moving bracket; 4. CCD camera; 5. clamping mechanism; 51. bidirectional lead screw; 52. nut slide; 53. clamping motor; 54. clamp; 55. connecting bracket; 56. clamping bracket; 561. mounting through hole; 6. switching mechanism; 61. dual-axis motor; 62. power assembly; 621. sector gear; 622. transmission rod; 623. power rod; 624. transmission gear; 625. intermediate rod; 63. linkage rod; 64. telescopic rod; 65. switching rod; 66. U-shaped mounting bracket; 67. switching cylinder; 68. movable rod; 69. connecting rod; 7. moving plate; 71. L-shaped mounting plate; 8. vacuum suction cup; 81. connecting block. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1 , Figure 2 , pictures and Figure 4As shown, the utility model is a product defect detection device, comprising a gantry 1, a CCD camera 4 installed at the bottom of the top plate of the gantry 1, and a clamping mechanism 5 located at one side of the CCD camera 4 for clamping the product, one side of the gantry 1 is provided with a switching mechanism 6 for switching the product detection surface, the top of the gantry 1 is also provided with a lifting cylinder 2, the piston rod of the lifting cylinder 2 is connected to a moving bracket 3, the bottom of the moving bracket 3 is connected to a moving plate 7, and one side of the clamping mechanism 5 is provided with a suction component for sucking the product;

[0024] The switching mechanism 6 is composed of a dual-axis motor 61 , a power assembly 62 and a switching rod 65 . The dual-axis motor 61 is installed on the top of the moving plate 7 .

[0025] In addition, the detection device also requires a computer electrically connected to the CCD camera 4. The specific structure of the computer is not limited in this embodiment and is therefore not marked in the drawings.

[0026] Among them, the power assembly 62 includes two power rods 623 connected to the output shaft of the dual-axis motor 61, two mutually meshing transmission gears 624, a transmission rod 622 rotatably arranged on the upper vertical plate of the movable plate 7, and an intermediate rod 625. The two transmission gears 624 are respectively sleeved and fixed on the transmission rod 622 and the intermediate rod 625. A fan gear 621 meshing with the transmission gear 624 on the intermediate rod 625 is sleeved and fixed on the outer wall of one of the power rods 623. The power rod 623 is driven by the dual-axis motor 61, and the transmission rod 622 is intermittently rotated by utilizing the meshing transmission of the fan gear 621 and the transmission gear 624.

[0027] The switching mechanism 6 further comprises a linkage rod 63 rotatably arranged on the lower vertical plate of the moving plate 7 and a switching cylinder 67 installed at the bottom of the top plate of the moving bracket 3. One end of the linkage rod 63 is connected to the transmission rod 622 through a transmission belt, and the other end is installed with a telescopic rod 64. The piston rod of the telescopic rod 64 is connected with a block, and the piston rod of the switching cylinder 67 is connected with a U-shaped mounting bracket 66. A movable rod 68 is provided through the U-shaped mounting bracket 66. A bearing is provided at the connection between the movable rod 68 and the U-shaped mounting bracket 66. A slot is provided at one end of 68 for engaging with a block. The height of the suction assembly is changed by driving the U-shaped mounting bracket 66 through the switching cylinder 67. After the vacuum suction cup 8 sucks the product, the clamping mechanism 5 releases the product. Then the switching cylinder 67 brings the U-shaped mounting bracket 66 to a suitable height, so that the slot on the movable rod 68 faces the block on the telescopic rod 64. Then the telescopic rod 64 drives the block to engage with the slot. When the transmission rod 622 rotates, the telescopic rod 64 rotates with the movable rod 68 to change the angle of the vacuum suction cup 8, thereby changing the detection surface of the product.

[0028] Among them, two symmetrically distributed L-shaped mounting plates 71 are provided on the outer side of the movable plate 7, and the two ends of the switching rod 65 pass through the L-shaped mounting plate 71 and extend to the outside of the L-shaped mounting plate 71. A bearing is provided at the connection between the switching rod 65 and the L-shaped mounting plate 71. The switching rod 65 is connected to the power rod 623 through a transmission belt. Two threaded interfaces are provided on the outer wall of the switching rod 65, and a connecting rod 69 is screwed at one end of the threaded interface. When the power rod 623 rotates, the transmission belt is used to drive the switching rod 65 to rotate, and the switching rod 65 drives the clamping mechanism 5 to rotate, thereby changing the detection surface of the product clamped by the clamping mechanism 5.

[0029] Among them, the clamping mechanism 5 includes a clamping bracket 56, a bidirectional lead screw 51 rotatably arranged on the inner side of the clamping bracket 56, and a clamping motor 53 installed at one end of the clamping bracket 56, one end of the bidirectional lead screw 51 is fixedly connected to the output shaft of the clamping motor 53, and nut slides 52 are sleeved on the two opposite threaded parts of the bidirectional lead screw 51. One side of the nut slide 52 is connected to a clamp 54 for clamping the product through a connecting bracket 55, and two symmetrically distributed mounting through holes 561 are provided on the top of the clamping bracket 56, which can accommodate the lower end of the connecting rod 69 to pass through. The lower end of the connecting rod 69 is fixedly connected to the clamping bracket 56 through a nut, and the rotation of the bidirectional lead screw 51 is controlled by the clamping motor 53, so that the nut slide 52 moves with the clamp 54 through the connecting bracket 55, and the product is clamped by the clamp 54.

[0030] The suction assembly consists of a vacuum suction cup 8 and a connecting block 81 installed on the top of the vacuum suction cup 8. The connecting block 81 is located on the inner side of the U-shaped mounting bracket 66 and is rotatably connected to the U-shaped mounting bracket 66 via a movable rod 68. The vacuum suction cup 8 is used to suck the product.

[0031] During operation, the gantry 1 is used to fix the detection device, the conveyor is used to transport the product, the CCD camera 4 is used to take pictures, and the computer is used to analyze and compare the pictures to complete the defect detection of the product. After the detection of one side of the product is completed, the product continues to move forward, and the lifting cylinder 2 drives the moving bracket 3 to move the moving plate 7 with the clamping mechanism 5 to the appropriate position, and the clamping motor 53 controls the rotation of the bidirectional lead screw 51 to move the nut slide 52 with the clamp 54 through the connecting bracket 55, and the clamp 54 is used to clamp the product, and the lifting cylinder 2 moves the product to the appropriate position, and the dual-axis motor 61 drives the power rod 623, and the meshing transmission of the fan gear 621 and the transmission gear 624 is used. The power rod 623 drives the switching rod 65 to rotate by the transmission belt, and the switching rod 65 drives the clamping mechanism 5 to rotate to flip the product, so that the detection surface of the product changes. The U-shaped mounting bracket 66 is driven by the switching cylinder 67 to change the height of the suction component. After the vacuum suction cup 8 sucks the product, the clamping mechanism 5 releases the product, and then the switching cylinder 67 brings the U-shaped mounting bracket 66 to a suitable height, so that the slot on the movable rod 68 faces the block on the telescopic rod 64, and then the telescopic rod 64 drives the block to engage with the slot. When the transmission rod 622 rotates, the telescopic rod 64 rotates with the movable rod 68, changing the angle of the vacuum suction cup 8, thereby changing the detection surface of the product.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A product defect detection device, comprising a gantry (1), a CCD camera (4) mounted on the bottom of the top plate of the gantry (1), and a clamping mechanism (5) located on one side of the CCD camera (4) for clamping a product, characterized in that: A switching mechanism (6) for switching the product detection surface is provided on one side of the gantry (1), a lifting cylinder (2) is also provided on the top of the gantry (1), the piston rod of the lifting cylinder (2) is connected to a movable bracket (3), the bottom of the movable bracket (3) is connected to a movable plate (7), and a suction component for sucking the product is provided on one side of the clamping mechanism (5); The switching mechanism (6) is composed of a double-axis motor (61), a power assembly (62) and a switching rod (65), and the double-axis motor (61) is installed on the top of the moving plate (7).

2. A product defect detection device according to claim 1, characterized in that: The power assembly (62) comprises two power rods (623) connected to the output shafts of the dual-axis motor (61), two mutually meshing transmission gears (624), a transmission rod (622) rotatably arranged on the upper vertical plate of the movable plate (7), and an intermediate rod (625), the two transmission gears (624) being respectively sleeved and fixed on the transmission rod (622) and the intermediate rod (625), and a sector gear (621) meshing with the transmission gear (624) on the intermediate rod (625) being sleeved and fixed on the outer wall of one of the power rods (623).

3. A product defect detection device according to claim 2, characterized in that: The switching mechanism (6) also includes a linkage rod (63) rotatably arranged on a lower vertical plate of the movable plate (7) and a switching cylinder (67) installed at the bottom of the top plate of the movable bracket (3); one end of the linkage rod (63) is connected to the transmission rod (622) through a transmission belt, and the other end is installed with a telescopic rod (64); the piston rod of the telescopic rod (64) is connected to a clamping block, and the piston rod of the switching cylinder (67) is connected to a U-shaped mounting bracket (66); a movable rod (68) is provided through the U-shaped mounting bracket (66); a bearing is provided at the connection between the movable rod (68) and the U-shaped mounting bracket (66); and a clamping groove for clamping with the clamping block is provided at one end of the movable rod (68).

4. A product defect detection device according to claim 2, characterized in that: Two symmetrically distributed L-shaped mounting plates (71) are provided on the outer side of the movable plate (7); two ends of the switching rod (65) penetrate the L-shaped mounting plates (71) and extend outside the L-shaped mounting plates (71); a bearing is provided at the connection between the switching rod (65) and the L-shaped mounting plates (71); the switching rod (65) is transmission-connected to the power rod (623) via a transmission belt; two threaded interfaces are provided on the outer wall of the switching rod (65); a connecting rod (69) is screwed to one end of the threaded interface.

5. A product defect detection device according to claim 4, characterized in that: The clamping mechanism (5) comprises a clamping bracket (56), a bidirectional lead screw (51) rotatably arranged on the inner side of the clamping bracket (56), and a clamping motor (53) installed at one end of the clamping bracket (56); one end of the bidirectional lead screw (51) is fixedly connected to the output shaft of the clamping motor (53); two opposite threaded portions of the bidirectional lead screw (51) are sleeved with nut slides (52); one side of the nut slide (52) is connected to a clamp (54) for clamping products via a connecting bracket (55); and two symmetrically distributed mounting through holes (561) are provided on the top of the clamping bracket (56) and can accommodate the lower end of a connecting rod (69) to pass through; the lower end of the connecting rod (69) is fixedly connected to the clamping bracket (56) via a nut.

6. A product defect detection device according to claim 3, characterized in that: The suction assembly is composed of a vacuum suction cup (8) and a connecting block (81) installed on the top of the vacuum suction cup (8); the connecting block (81) is located inside the U-shaped mounting bracket (66) and is rotatably connected to the U-shaped mounting bracket (66) via a movable rod (68).

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