A visual inspection autofocus device

Abstract

This utility model relates to the field of visual inspection technology and discloses an automatic focusing device for visual inspection, including a conveyor belt. A positioning component is provided at the lower end of the conveyor belt, and the positioning component includes a fixed rod located at the lower end of the conveyor belt. Starting a third motor drives a ball screw to rotate, and a second ball screw sleeve slides along a second groove on the upper end of a receiving plate, changing the horizontal detection orientation of the visual sensor probe. Starting a fourth motor drives the visual sensor probe to rotate around the center of a turntable, allowing detection of different positions at the same location during product rotation. Activating a second electric telescopic rod rotates the visual sensor probe along the lower end of a connecting plate by a certain angle, adjusting the detection angle of the visual sensor probe. By adjusting the position of the visual sensor probe, various positions of the product can be detected during product rotation, increasing the comprehensiveness of the inspection.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, and in particular to a visual inspection automatic focusing device. Background Technology

[0002] Visual inspection is the use of machines to replace human eyes for measurement and judgment. It involves using machine vision products to convert the captured target into image signals, which are then transmitted to a dedicated image processing system. Based on pixel distribution and information such as brightness and color, the signals are converted into digital signals. The image system performs various calculations on these signals to extract the target's features, and then controls the on-site equipment based on the judgment results. It is a valuable mechanism for production, assembly, or packaging, and it has immeasurable value in detecting defects and preventing defective products from being delivered to consumers.

[0003] However, existing visual inspection devices lack an effective positioning and focusing structure and cannot adjust the detection position as needed, which limits the detection range and results in incomplete detection. Utility Model Content

[0004] In view of the fact that existing visual inspection devices lack an effective positioning and focusing structure and cannot adjust the detection position as needed, thus limiting the detection range and resulting in incomplete detection, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a visual inspection automatic focusing device, including a conveyor belt, a positioning component at the lower end of the conveyor belt, a fixing rod at the lower end of the fixing rod, a fixing frame at the lower end of the fixing rod, a first motor on one side of the fixing frame, a bidirectional lead screw at the output end of the first motor, two sets of symmetrical first ball screw sleeves on the outer wall of the bidirectional lead screw, a first electric telescopic rod at the upper end of the first ball screw sleeve, a fixing block at the upper end of the first electric telescopic rod, a second motor on one side of the outer wall of the fixing block, and the output end of the second motor passing through... A fixed block is connected to a rotating rod. A positioning block is provided at one end of the rotating rod. A connecting frame is provided at the upper end of the conveyor belt. A detection component is provided at the upper end of the connecting frame. The detection component includes a receiving plate provided at the upper end of the connecting frame. A third motor is provided on one side of the outer wall of the receiving plate. A ball screw is provided at the output end of the third motor. A second ball sleeve is fitted on the outer wall of the ball screw. A fourth motor is provided at the lower end of the second ball sleeve. A turntable is provided at the output end of the fourth motor. A connecting plate is provided at the lower end of the turntable. A vision sensing probe is provided at the lower end of the connecting plate. A second electric telescopic rod is provided at the lower end of the connecting plate on one side of the vision sensing probe.

[0006] In a preferred embodiment of the visual inspection autofocus device of this utility model, the bidirectional lead screw is rotatably inserted into the end of the fixed frame, and the first ball screw sleeve is movably inserted into the inner cavity of the fixed frame.

[0007] As a preferred embodiment of the visual inspection automatic focusing device of this utility model, the first ball screw sleeve has connecting rods fixedly provided at both ends of its outer wall, a guide plate fixedly provided at the upper end of the connecting rod, and the end face of the positioning block away from the rotating rod and the end face of the guide plate away from the connecting rod are on the same horizontal plane.

[0008] As a preferred embodiment of the visual inspection autofocus device of this utility model, the outer wall of the fixed frame is provided with a first sliding groove that cooperates with the connecting rod.

[0009] As a preferred embodiment of the visual inspection autofocus device of this utility model, the upper end of the receiving plate is provided with a second sliding groove that cooperates with the second ball screw sleeve.

[0010] In a preferred embodiment of the visual detection autofocus device of this utility model, the upper end of the visual sensing probe and the lower end of the connecting plate are hinged together, the upper end of the second electric telescopic rod and the connecting plate are hinged together, and the extension end of the second electric telescopic rod and the outer wall of the visual sensing probe are hinged together.

[0011] In a preferred embodiment of the visual inspection automatic focusing device of this utility model, a PLC controller is provided on the outer wall of the conveyor belt, and the input ends of the first motor, the second motor, the third motor, the fourth motor, the visual sensing probe, and the second electric telescopic rod are all electrically connected to the output end of the PLC controller.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. In this utility model, starting the third motor drives the ball screw to rotate, and the second ball screw sleeve slides along the second groove opened at the upper end of the receiving plate, thereby changing the horizontal detection position of the vision sensor probe. Starting the fourth motor can drive the vision sensor probe to rotate around the center of the turntable, so that different positions of the same position can be detected during the product rotation. Furthermore, starting the second electric telescopic rod can drive the vision sensor probe to rotate a certain angle along the lower end of the connecting plate, thereby adjusting the detection angle of the vision sensor probe. By adjusting the position of the vision sensor probe, various positions of the product can be detected during the product rotation, increasing the comprehensiveness of the detection.

[0014] 2. In this utility model, during the start-up of the first motor, the two sets of positioning blocks approach each other to clamp the product, and the first electric telescopic rod is extended upward by the control of the PLC controller. The product clamped between the positioning blocks moves upward, so that the product leaves the upper end of the conveyor belt. By starting the second motor, the rotating rod is driven to rotate, and the product between the positioning blocks rotates accordingly, which facilitates the rotation detection of the product and makes the detection more comprehensive. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the visual inspection automatic focusing device of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the visual inspection automatic focusing device of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the positioning component of the visual inspection automatic focusing device of this utility model;

[0018] Figure 4 This is a three-dimensional cross-sectional view of the detection component of the visual inspection automatic focusing device of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Conveyor belt; 2. Positioning assembly; 201. Fixed rod; 202. Fixed frame; 203. First motor; 204. Bidirectional lead screw; 205. First ball screw sleeve; 206. First electric telescopic rod; 207. Fixed block; 208. Second motor; 209. Rotating rod; 210. Positioning block; 211. Connecting rod; 212. Guide plate; 3. Connecting frame; 4. PLC controller; 5. Detection assembly; 51. Receiving plate; 52. Third motor; 53. Ball screw; 54. Second ball screw sleeve; 55. Fourth motor; 56. Turntable; 57. Connecting plate; 58. Vision sensor probe; 59. Second electric telescopic rod. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] Reference Figures 1-3This is the first embodiment of the present invention, which provides a visual inspection automatic focusing device, including a conveyor belt 1. A positioning component 2 is provided at the lower end of the conveyor belt 1. The positioning component 2 includes a fixed rod 201 provided at the lower end of the conveyor belt 1. A fixed frame 202 is provided at the lower end of the fixed rod 201. A first motor 203 is provided on one side of the fixed frame 202. A bidirectional lead screw 204 is provided at the output end of the first motor 203. Two sets of first ball screw sleeves 205 are symmetrically fitted on the outer wall of the bidirectional lead screw 204. A first electric telescopic rod 206 is provided at the upper end of the first ball screw sleeve 205. A fixed block 207 is provided at the upper end of the first electric telescopic rod 206. A second motor 208 is provided on one side of the outer wall of the fixed block 207. The output end of the second motor 208 passes through the fixed block 207 and is connected to a rotating rod 209. A positioning block 210 is provided at one end of the rotating rod 209 that is close to each other.

[0024] The bidirectional lead screw 204 is rotatably inserted into the middle of the fixed frame 202, and the first ball screw sleeve 205 is movably inserted into the inner cavity of the fixed frame 202.

[0025] Connecting rods 211 are fixed at both ends of the outer wall of the first ball sleeve 205. A guide plate 212 is fixed at the upper end of the connecting rod 211. The end face of the positioning block 210 away from the rotating rod 209 and the end face of the guide plate 212 away from the connecting rod 211 are on the same horizontal plane.

[0026] The outer wall of the fixed frame 202 has a first groove that cooperates with the connecting rod 211.

[0027] The product requiring visual inspection is placed on the upper end of conveyor belt 1. Then, the first motor 203 is started by the PLC controller 4. The first motor 203 drives the bidirectional lead screw 204 to rotate. The bidirectional lead screw 204 drives the first ball screw sleeve 205 to slide along the inner wall of the fixed frame 202. The two sets of connecting rods 211 slide along the first groove opened on the outer wall of the fixed frame 202. The guide plates 212 move closer to each other until the product at the upper end of conveyor belt 1 is clamped between the two sets of guide plates 212. At this time, the first motor 203 is turned off. When the product moves between the two sets of positioning blocks 210, the first motor 203 is started again, driving the two sets of positioning blocks 210 to move closer to each other to clamp the product. The first electric telescopic rod 206 is extended upward by the PLC controller 4. The product clamped between the positioning blocks 210 moves upward, so that the product leaves the upper end of conveyor belt 1. The second motor 208 is started to drive the rotating rod 209 to rotate. The product between the positioning blocks 210 rotates accordingly, which facilitates the rotation detection of the product and makes the detection more comprehensive.

[0028] Example 2

[0029] Reference Figures 1-4This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a connecting frame 3 is provided at the upper end of the conveyor belt 1, and a detection component 5 is provided at the upper end of the connecting frame 3. The detection component 5 includes a receiving plate 51 provided at the upper end of the connecting frame 3. A third motor 52 is provided on one side of the outer wall of the receiving plate 51. A ball screw 53 is provided at the output end of the third motor 52. A second ball sleeve 54 is sleeved on the outer wall of the ball screw 53. A fourth motor 55 is provided at the lower end of the second ball sleeve 54. A turntable 56 is provided at the output end of the fourth motor 55. A connecting plate 57 is provided at the lower end of the turntable 56. A vision sensing probe 58 is provided at the lower end of the connecting plate 57. A second electric telescopic rod 59 is provided at the lower end of the connecting plate 57 on one side of the vision sensing probe 58.

[0030] The upper end of the receiving plate 51 is provided with a second sliding groove that cooperates with the second ball screw sleeve 54.

[0031] The upper end of the visual sensing probe 58 is hinged to the lower end of the connecting plate 57, the upper end of the second electric telescopic rod 59 is hinged to the connecting plate 57, and the extension end of the second electric telescopic rod 59 is hinged to the outer wall of the visual sensing probe 58.

[0032] The outer wall of the conveyor belt 1 is equipped with a PLC controller 4. The input terminals of the first motor 203, the second motor 208, the third motor 52, the fourth motor 55, the vision sensor probe 58, and the second electric telescopic rod 59 are all electrically connected to the output terminal of the PLC controller 4.

[0033] When the detection orientation needs to be adjusted, the third motor 52 is activated to drive the ball screw 53 to rotate, and the second ball sleeve 54 slides along the second groove opened at the upper end of the receiving plate 51, thereby changing the horizontal detection orientation of the vision sensor probe 58. Activating the fourth motor 55 can drive the vision sensor probe 58 to rotate around the center of the turntable 56, so that different positions of the same orientation can be detected during the product rotation. Activating the second electric telescopic rod 59 can drive the vision sensor probe 58 to rotate a certain angle along the lower end of the connecting plate 57, thereby adjusting the detection angle of the vision sensor probe 58. By adjusting the position of the vision sensor probe 58, various positions of the product can be detected during the product rotation, increasing the comprehensiveness of the detection.

[0034] The remaining structure is the same as that in Example 1.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vision inspection auto-focusing device comprising a conveyor belt (1), characterized in that: The lower end of the conveyor belt (1) is provided with a positioning component (2). The positioning component (2) includes a fixed rod (201) located at the lower end of the conveyor belt (1). The lower end of the fixed rod (201) is provided with a fixed frame (202). A first motor (203) is provided on one side of the fixed frame (202). A bidirectional lead screw (204) is provided at the output end of the first motor (203). Two sets of first ball screw sleeves (205) are symmetrically fitted on the outer wall of the bidirectional lead screw (204). A first electric telescopic rod (206) is provided at the upper end of the first ball screw sleeve (205). A fixed block (207) is provided at the upper end of the first electric telescopic rod (206). A second motor (208) is provided on one side of the outer wall of the fixed block (207). The output end of the second motor (208) passes through the fixed block (207) and is connected to a rotating rod (209). The rotating rod (209) is... A positioning block (210) is provided at one end of the conveyor belt (1). A connecting frame (3) is provided at the upper end of the conveyor belt (1). A detection component (5) is provided at the upper end of the connecting frame (3). The detection component (5) includes a receiving plate (51) provided at the upper end of the connecting frame (3). A third motor (52) is provided on one side of the outer wall of the receiving plate (51). A ball screw (53) is provided at the output end of the third motor (52). A second ball sleeve (54) is sleeved on the outer wall of the ball screw (53). A fourth motor (55) is provided at the lower end of the second ball sleeve (54). A turntable (56) is provided at the output end of the fourth motor (55). A connecting plate (57) is provided at the lower end of the turntable (56). A vision sensing probe (58) is provided at the lower end of the connecting plate (57). A second electric telescopic rod (59) is provided at the lower end of the connecting plate (57) on one side of the vision sensing probe (58).

2. The visual inspection autofocus device according to claim 1, characterized in that: The bidirectional lead screw (204) is rotatably inserted into the middle of the fixed frame (202), and the first ball screw sleeve (205) is movably inserted into the inner cavity of the fixed frame (202).

3. The visual inspection autofocus apparatus of claim 1, wherein: The first ball screw sleeve (205) has connecting rods (211) fixed at both ends of its outer wall. The upper end of the connecting rod (211) is fixed with a guide plate (212). The end face of the positioning block (210) away from the rotating rod (209) and the end face of the guide plate (212) away from the connecting rod (211) are on the same horizontal plane.

4. The visual inspection autofocus apparatus of claim 3, wherein: The outer wall of the fixed frame (202) is provided with a first groove that cooperates with the connecting rod (211).

5. The visual inspection autofocus apparatus of claim 1, wherein: The upper end of the receiving plate (51) is provided with a second sliding groove that cooperates with the second ball screw sleeve (54).

6. The visual inspection autofocus apparatus of claim 1, wherein: The upper end of the visual sensing probe (58) is hinged to the lower end of the connecting plate (57), the upper end of the second electric telescopic rod (59) is hinged to the connecting plate (57), and the extension end of the second electric telescopic rod (59) is hinged to the outer wall of the visual sensing probe (58).

7. The visual inspection autofocus apparatus of claim 1, wherein: The outer wall of the conveying belt (1) is provided with a PLC controller (4), the input end of the first motor (203), the second motor (208), the third motor (52), the fourth motor (55), the visual sensing probe (58) and the second electric telescopic rod (59) are electrically connected with the output end of the PLC controller (4).

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