AOI automatic detection equipment

Abstract

The utility model relates to the field of automatic detection, in particular to AOI automatic detection equipment which comprises a base. A bearing box is rotationally arranged on the base, first U-shaped mounting frames are fixedly connected to the outer walls of the four sides of the bearing box, a placement groove is formed in the outer wall of each first U-shaped mounting frame, a second motor is fixedly connected to the inner wall of each placement groove, and the rotating assembly is arranged at the end, away from the bearing box, of each second motor. The PCB is placed on the clamping assembly on the left side of the base, then the PCB is placed at the position of the detection camera in front of the base to be shot through rotation of the bearing box, the PCB is illuminated through the LED irradiation lamp, and then the PCB on the clamping assembly is driven to turn over through the rotating assembly. According to the AOI detection equipment, the detection camera is used for shooting and detecting the back surface of the board, and the PCB which is checked to be qualified or not is put through rotation of the bearing box, so that the problems that the AOI detection equipment has a detection blind area and is relatively low in detection efficiency during detection are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to automatic detection device field, concretely relates to an AOI automatic detection equipment. BACKGROUND

[0002] The AOI automatic detection equipment utilizes the high-definition camera to automatically scan the product to be detected (such as printed circuit board PCB or other electronic components), collects the image, and carries out real-time analysis on the image through the advanced algorithm, compares the detected image with the standard digital image stored in the database, and judges whether the product to be detected has defects, and the basic principle of the equipment is to compare the differences between the standard image and the image to be detected by using the image technology, so as to judge whether the image to be detected meets the standard.

[0003] The AOI detection equipment in the prior art can only detect one side of the PCB when detecting the PCB, and there is a detection blind area on the other side, which may cause some defects hidden on the back of the PCB to be missed, thereby affecting the overall quality of the product, and the traditional equipment may need to manually turn over the PCB or use a complex mechanical structure to realize the turning over, which not only increases the operation difficulty, but also limits the improvement of the detection efficiency.

[0004] Therefore, an AOI automatic detection equipment is proposed, which has an automatic turning structure and a detection automatic unloading and feeding structure, and solves the problems of detection blind area and low detection efficiency of the existing AOI detection equipment during detection. UTILITY MODEL CONTENTS

[0005] In order to overcome the problems of detection blind area and low detection efficiency of the existing AOI detection equipment during detection, an AOI automatic detection equipment is proposed.

[0006] The technical scheme of the utility model is as follows: an AOI automatic detection equipment, comprising a base; further comprising a rotating assembly and a clamping assembly, a bearing box is rotatably arranged on the base, a first U-shaped mounting bracket is fixedly connected to the four outer walls of the bearing box, a mounting groove is formed in the outer wall of the first U-shaped mounting bracket, a second motor is fixedly connected to the inner wall of the mounting groove, the rotating assembly is arranged at the end of the second motor away from the bearing box, a second U-shaped mounting bracket is fixedly connected to the end of the first U-shaped mounting bracket away from the bearing box, a second limiting groove is formed in the end of the second U-shaped mounting bracket away from the bearing box, the clamping assembly is arranged on the rotating assembly, a support is fixedly connected to the front end of the base, an LED irradiation lamp is arranged on the support, a detection camera is arranged at the upper end of the support, and the camera end of the detection camera faces downward.

[0007] Preferably, a first motor is fixedly connected to the upper end of the inner wall of the base, and the upper end of the output shaft of the first motor passes through the base and is fixedly connected to a carrier box. A support base is fixedly connected to the upper end of the base, and a rotating ball with a uniform circular distribution is rotatably arranged on the upper end of the support base. The outer wall of the rotating ball is in contact with the lower end of the carrier box.

[0008] Preferably, the rotating assembly includes a rotating disk, a first limiting groove, an extension plate, a fixed plate, a limiting rod, a double-threaded screw, and a third motor; the output shaft of the second motor is fixedly connected to the rotating disk at the end away from the carrier box, the outer wall of the rotating disk has a first limiting groove, the outer wall of the first limiting groove and the inner wall of the second limiting groove are in contact with each other, two extension plates are fixedly connected to the arc-shaped outer wall of the rotating disk, the end of the extension plate away from the carrier box is fixedly connected to a fixed plate, and a baffle is fixedly connected to the center of the rotating disk away from the carrier box, with a limiting rod fixedly connected to each baffle in the direction of the two fixed plates.

[0009] Preferably, a double-threaded screw is rotatably mounted on one end of the two fixed plates that are close to each other. The double-threaded screw passes through the baffle. A third motor is fixedly connected to the fixed plate at one end of the rotating disk in the direction away from the baffle. The output shaft of the third motor passes through the fixed plate and is fixedly connected to the straight outer wall of the double-threaded screw. Two threads in opposite directions are provided on the double-threaded screw.

[0010] Preferably, the clamping assembly includes a Z-shaped clamping plate, a first groove, a second groove, a clamping groove, and a placement plate; the Z-shaped clamping plate is threaded on each of the two opposite thread lines on the double-threaded screw, the first groove is formed on the Z-shaped clamping plate, the first groove is adapted to the double-threaded screw, and the second groove is formed through the Z-shaped clamping plate.

[0011] Preferably, the inner wall of the second groove is in contact with the outer wall of the limiting rod, and a placement plate is fixed to one end of the two Z-shaped clamping plates that are close to each other. A clamping groove is opened at one end of the two Z-shaped clamping plates that are close to each other.

[0012] Preferably, the LED illumination lamp is directed toward the center of the two Z-shaped clamping plates at the front of the base.

[0013] The beneficial effects of this utility model are as follows: When automatic inspection of PCB boards is required, the PCB board is placed on the clamping assembly on the left side of the base. Then, by rotating the carrier box, the PCB board is placed in front of the base for inspection by the inspection camera. The PCB board is illuminated by LED lights. Then, the rotating assembly drives the PCB board on the clamping assembly to flip over. Then, the inspection camera takes pictures of the back of the board for inspection. Finally, by rotating the carrier box, the PCB board that has passed the inspection is put into operation. Attached Figure Description

[0014] Figure 1The diagram shown is a three-dimensional structural schematic of an AOI automatic inspection device according to this utility model.

[0015] Figure 2 The diagram shown is a cross-sectional perspective view of an AOI automatic inspection device according to this utility model.

[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the first U-shaped mounting bracket of an AOI automatic inspection device according to this utility model.

[0017] Figure 4 The diagram shown is a three-dimensional structural schematic of the rotating component and clamping component of an AOI automatic inspection device according to this utility model.

[0018] The markings in the attached diagram are as follows: 1. Base; 101. Rotating disk; 102. First limiting groove; 103. Extension plate; 104. Fixing plate; 105. Limiting rod; 106. Double-threaded screw; 107. Third motor; 108. Baffle; 2. Bracket; 201. Z-shaped clamping plate; 202. First groove; 203. Second groove; 204. Clamping groove; 205. Placement plate; 3. LED illumination light; 4. Detection camera; 5. First motor; 6. Support chassis; 7. Rotating ball; 8. Carrier box; 9. First U-shaped mounting bracket; 10. Placement groove; 11. Second motor; 12. Second U-shaped mounting bracket; 13. Second limiting groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-4This utility model provides an embodiment of an AOI (Automated Inspection and Testing) device, including a base 1; it also includes a rotating assembly and a clamping assembly. A carrier box 8 is rotatably mounted on the base 1. First U-shaped mounting brackets 9 are fixedly connected to the four outer walls of the carrier box 8. The outer wall of the first U-shaped mounting bracket 9 has a mounting groove 10. A second motor 11 is fixedly connected to the inner wall of the mounting groove 10. A rotating assembly is provided at the end of the second motor 11 away from the carrier box 8. A second U-shaped mounting bracket 12 is fixedly connected to the end of the first U-shaped mounting bracket 9 away from the carrier box 8. A second limiting groove 13 is provided through the end of the second U-shaped mounting bracket 12 away from the carrier box 8. A clamping assembly is provided on the rotating assembly. The front end of the base 1 is fixedly... A bracket 2 is attached, and an LED illumination lamp 3 is installed on the bracket 2. A detection camera 4 is installed at the upper end of the bracket 2, with the camera end of the detection camera 4 facing downwards. When automatic detection of the PCB board is required, the PCB board is placed on the clamping assembly on the left side of the base 1. Then, by rotating the carrier box 8, the PCB board is placed in front of the detection camera 4 of the base 1 for shooting. The LED illumination lamp 3 illuminates the PCB board. Then, the rotating assembly drives the PCB board on the clamping assembly to flip. Then, the detection camera 4 shoots the back of the board for detection. Finally, by rotating the carrier box 8, the PCB board that has passed the inspection is released.

[0021] Please see Figures 1-3 In this embodiment, a first motor 5 is fixedly connected to the upper end of the inner wall of the base 1. The upper end of the output shaft of the first motor 5 passes through the base 1 and is fixedly connected to a carrier box 8. A support base 6 is fixedly connected to the upper end of the base 1. Rotating beads 7 are rotatably arranged in a circular and uniform distribution on the upper end of the support base 6. The outer wall of the rotating beads 7 is in contact with the lower end of the carrier box 8. By turning on the first motor 5, the carrier box 8 above can be driven to rotate, thereby performing the work of loading and unloading rotating conveying. The illumination direction of the LED irradiation lamp 3 is towards the center of the two Z-shaped clamping plates 201 at the front position of the base 1.

[0022] Please see Figure 4In this embodiment, the rotating assembly includes a rotating disk 101, a first limiting groove 102, an extension plate 103, a fixing plate 104, a limiting rod 105, a double-threaded screw 106, and a third motor 107. The output shaft of the second motor 11 is fixedly connected to the rotating disk 101 at one end away from the carrier box 8. The outer wall of the rotating disk 101 has a first limiting groove 102, and the outer wall of the first limiting groove 102 is in contact with the inner wall of the second limiting groove 13. Two extension plates 103 are fixedly connected to the arc-shaped outer wall of the rotating disk 101, and a fixing plate 104 is fixedly connected to the end of the extension plate 103 away from the carrier box 8. A baffle 108 is fixedly connected to the end of the center of the rotating disk 101 away from the carrier box 8. Each of the baffle 108, facing the two fixed plates 104, has a limit rod 105 fixedly connected to it. The rotating disk 101 is limited by the extension plate 103 to the first limit groove 102, which improves the stability of the rotating disk 101 during rotation. The second motor 11 is activated, causing the rotating disk 101 to rotate, thereby flipping the PCB board on the clamping assembly. A double-threaded screw 106 is rotatably installed at the end of the two fixed plates 104 that are close to each other. The double-threaded screw 106 passes through the baffle 108 and is located at one end of the rotating disk 101. A third motor 107 is fixedly connected to the plate 104 away from the baffle 108. The output shaft of the third motor 107 passes through the fixed plate 104 and is fixed to the straight outer wall of the double-threaded screw 106. The double-threaded screw 106 has two threads in opposite directions. By turning on the third motor 107, the two clamping components can move closer and further apart. The clamping components include a Z-shaped clamping plate 201, a first groove 202, a second groove 203, a clamping groove 204, and a placement plate 205. Z-shaped clamping plates 201 are threaded onto each of the two opposite threads on the double-threaded screw 106. The Z-shaped clamping plate 201 has a first groove 202 that is compatible with the double-threaded screw 106. The Z-shaped clamping plate 201 has a second groove 203 that runs through it. The inner wall of the second groove 203 is in contact with the outer wall of the limiting rod 105. The two Z-shaped clamping plates 201 are fixed to a placement plate 205 at their close ends. The two Z-shaped clamping plates 201 have a clamping groove 204 at their close ends. By placing the PCB board on the two placement plates 205, the two Z-shaped clamping plates 201 are brought close together to place the PCB board into the clamping groove 204 for limiting and clamping.

[0023] During the PCB board inspection and photography process, the PCB board is manually placed on the placement plates 205 of the two Z-shaped clamping plates 201 on the left side of the base 1. The third motor 107 is then activated, causing the double-threaded screw 106 to rotate. The limiting rods 105 of the two Z-shaped clamping plates 201 and the rotation of the double-threaded screw 106 allow the two Z-shaped clamping plates 201 to move closer to each other along the double-threaded screw 106, thereby clamping the PCB board through the clamping slots 204. Then, the first motor 5 is activated, causing the output shaft of the first motor 5 to rotate the carrier box 8 by 90 degrees. During rotation, the rotating beads 7 on the support chassis 6 reduce friction when the carrier box 8 rotates. When the Z-shaped clamping plate 201 with the PCB board rotates to the front of the base 1, the LED illumination light 3 is turned on to illuminate the PCB board on the Z-shaped clamping plate 201. Then, the inspection camera 4 is activated to inspect the PCB board. The PCB board is inspected by taking pictures. After the pictures are taken, the second motor 11 is turned on, and the output shaft of the second motor 11 drives the rotating disk 101 to rotate. The rotating disk 101 is limited by the first limiting groove 102 through the extension plate 103, which can improve the stability of the rotating disk 101 when it rotates. When the rotating disk 101 rotates, it drives the two Z-shaped clamping plates 201 to rotate 180 degrees, so that the back of the PCB board is inspected by taking pictures by the detection camera 4. After the inspection is completed, the PCB board that has passed the inspection is then rotated 90 degrees by turning on the first motor 5 and placed on the right side of the base 1. Then, the PCB board on the two Z-shaped clamping plates 201 is unloaded by turning on the third motor 107. When a defect is detected, the first motor 5 is turned on, and the PCB board is rotated 180 degrees along the center position of the first motor 5, so that the unqualified PCB board is unloaded in the above manner.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An AOI (Automated Inspection) device, comprising a base (1); characterized in that: It also includes a rotating component and a clamping component. A carrier box (8) is rotatably mounted on the base (1). A first U-shaped mounting bracket (9) is fixed to the four outer walls of the carrier box (8). A placement groove (10) is opened on the outer wall of the first U-shaped mounting bracket (9). A second motor (11) is fixed to the inner wall of the placement groove (10). A rotating component is provided at the end of the second motor (11) away from the carrier box (8). A second U-shaped mounting bracket (12) is fixed to the end of the first U-shaped mounting bracket (9) away from the carrier box (8). A second limiting groove (13) is opened through the end of the second U-shaped mounting bracket (12) away from the carrier box (8). A clamping component is provided on the rotating component. A bracket (2) is fixed to the front end of the base (1). An LED illuminator (3) is provided on the bracket (2). A detection camera (4) is provided at the upper end of the bracket (2). The camera end of the detection camera (4) faces downward.

2. The AOI automatic inspection device according to claim 1, characterized in that: The upper end of the inner wall of the base (1) is fixedly connected to the first motor (5). The upper end of the output shaft of the first motor (5) passes through the base (1) and is fixedly connected to the bearing box (8). The upper end of the base (1) is fixedly connected to the support chassis (6). The upper end of the support chassis (6) is rotatably provided with rotating beads (7) that are evenly distributed in a circle. The outer wall of the rotating beads (7) is in contact with the lower end of the bearing box (8).

3. The AOI automatic inspection device according to claim 1, characterized in that: The rotating assembly includes a rotating disk (101), a first limiting groove (102), an extension plate (103), a fixed plate (104), a limiting rod (105), a double-threaded screw (106), and a third motor (107). The output shaft of the second motor (11) is fixed to the rotating disk (101) at one end away from the carrier box (8). The outer wall of the rotating disk (101) is provided with the first limiting groove (102). The outer wall of the first limiting groove (102) is in contact with the inner wall of the second limiting groove (13). The arc-shaped outer wall of the rotating disk (101) is fixed to two extension plates (103). The end of the extension plate (103) away from the carrier box (8) is fixed to the fixed plate (104). The center of the rotating disk (101) is fixed to the end away from the carrier box (8). The end of the center of the rotating disk (101) away from the carrier box (8) is fixed to a baffle (108). The baffle (108) is fixed to the two fixed plates (104) with a limiting rod (105) in each direction.

4. The AOI automatic inspection device according to claim 3, characterized in that: Two fixed plates (104) are rotatably mounted on one end of each other. The double threaded rod (106) passes through the baffle (108). A third motor (107) is fixedly connected to the fixed plate (104) at one end of the rotating disk (101) in a direction away from the baffle (108). The output shaft of the third motor (107) passes through the fixed plate (104) and is fixedly connected to the straight outer wall of the double threaded rod (106). Two threads in opposite directions are provided on the double threaded rod (106).

5. An AOI automatic inspection device according to claim 4, characterized in that: The clamping assembly includes a Z-shaped clamping plate (201), a first groove (202), a second groove (203), a clamping groove (204), and a placement plate (205); the Z-shaped clamping plate (201) is threaded on each of the two opposite thread lines on the double-threaded screw (106), the first groove (202) is opened on the Z-shaped clamping plate (201), the first groove (202) is adapted to the double-threaded screw (106), and the second groove (203) is opened through the Z-shaped clamping plate (201).

6. An AOI automatic inspection device according to claim 5, characterized in that: The inner wall of the second groove (203) is in contact with the outer wall of the limiting rod (105). The two Z-shaped clamping plates (201) are fixed with a placement plate (205) at one end close to each other, and a clamping groove (204) is opened at one end close to each other.

7. An AOI automatic inspection device according to claim 1, characterized in that: The LED illuminator (3) is directed toward the center of the two Z-shaped clamping plates (201) at the front position of the base (1).

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