A visual inspection device

Abstract

The utility model discloses a visual detection device, including the frame, is equipped with the transmission mechanism that can clamp and convey work piece to the detection position at the detection station, and is used for detecting the detection mechanism of work piece to the detection position, detection mechanism includes: the inner hole measuring device is configured as the inner hole size of work piece is measured, visual detection subassembly is installed through a height adjusting frame, and includes a first visual detector for obtaining work piece top image, and a second visual detector for obtaining work piece side image, height adjusting frame is configured as can adjust the position of first visual detector and second visual detector relative to the detection position. The utility model discloses through inner hole measuring device, first visual detector, second visual detector etc. Structure cooperation, avoided the tedious process of repeatedly transfer, positioning and clamping of work piece between different detection units. Work piece can sequentially complete all detection items after positioning and clamping once, greatly shortens the total detection time of single work piece.

Description

Technical Field

[0001] This utility model particularly relates to a visual inspection device. Background Technology

[0002] In the industrial manufacturing sector, comprehensive quality inspection of precision workpieces (such as worm gears) is a crucial step in ensuring the quality and reliability of the final product. Such inspections typically cover external appearance inspections (such as surface scratches, machining stains, and component assembly status) as well as internal dimensional measurements (such as inner hole diameter, roundness, and depth).

[0003] Currently, the industry typically uses the following methods when dealing with workpieces that require multi-dimensional inspection: 1. Visual inspection and internal hole dimension measurement are performed separately at different workstations. This means that the workpiece needs to undergo multiple loading, unloading, positioning, and transfer processes, which reduces inspection efficiency. 2. In a single appearance inspection station, many existing devices are only equipped with top vision detectors, which cannot effectively capture the side features of the workpiece. In order to inspect the quality of the side, it is usually necessary to configure an additional rotating mechanism for the production line to drive the workpiece to rotate, which increases the complexity of the mechanical structure and the failure rate of the equipment. At the same time, the workpiece may affect the clarity of image acquisition during rotation. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a visual inspection device.

[0005] A visual inspection device includes a frame with an inspection station arranged along a conveying direction; the inspection station is equipped with a conveying mechanism capable of clamping and conveying a workpiece to an inspection position, and an inspection mechanism for inspecting the workpiece arriving at the inspection position; the inspection mechanism includes: an internal hole measuring device configured to measure the internal hole size of the workpiece; a visual inspection assembly mounted via a height adjustment frame, including a first visual detector for acquiring a top image of the workpiece, and a second visual detector for acquiring a side image of the workpiece; the height adjustment frame is configured to adjust the positions of the first visual detector and the second visual detector relative to the inspection position.

[0006] Preferably, the height adjustment frame includes a first adjustment structure, a second adjustment structure, and a fixed frame fixed on the machine frame. The fixed frame is provided with a first mounting frame and a second mounting frame that can be independently adjusted vertically. The first adjustment structure is connected between the fixed frame and the first mounting frame to adjust the first visual detector to be closer to or further away from the top of the workpiece. The second adjustment structure is connected between the fixed frame and the second mounting frame to adjust the height of the second visual detector, thereby aligning different heights of the workpiece side.

[0007] Preferably, the first adjustment structure includes a first mounting base movable and lockable along the fixed frame, and a first crossbar connected to the first mounting base, wherein the first mounting frame is mounted on the first crossbar.

[0008] Preferably, a first bolt is connected to the first mounting base, and the first bolt is used to lock the first mounting base onto the fixing frame.

[0009] Preferably, the second adjustment structure includes a second mounting base movable and lockable along the fixed frame, and a second crossbar connected to the second mounting base, wherein the second mounting frame is mounted on the second crossbar.

[0010] Preferably, a second bolt is connected to the second mounting base, the second bolt being used to lock the second mounting base onto the fixing frame.

[0011] Preferably, the conveying mechanism includes a conveying frame slidably disposed on the frame, and a cylinder for driving the conveying frame to move; the conveying frame is provided with a pair of grippers, the grippers are connected to a motor, and the motor is used to drive the two grippers to move closer or further apart to clamp or release the workpiece.

[0012] Preferably, a collection box is provided below the conveying end of the frame to receive and collect the workpieces that have completed the inspection.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the coordinated structure of an internal hole measuring device, a first visual detector, and a second visual detector, avoids the cumbersome process of repeatedly transferring, positioning, and clamping the workpiece between different inspection units. After a single positioning and clamping, the workpiece can sequentially complete all inspection items, significantly shortening the total inspection time for a single workpiece. Furthermore, by configuring the first and second visual detectors supported by a height-adjustable frame, this invention can simultaneously and statically acquire high-quality images of the top and sides of the workpiece at a single workstation without requiring workpiece rotation. This simplifies the equipment's mechanical structure, improves system reliability, avoids image blurring caused by workpiece movement, and fundamentally eliminates blind spots from a single viewing angle, ensuring the comprehensiveness and accuracy of appearance inspection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a visual inspection device according to this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a visual inspection device according to this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a visual inspection device according to this application. Figure 3 ; Figure 4 This application is Figure 1 A magnified view of part A in the image. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0017] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0018] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, welding, snap-fitting, or embedding to suitably replace the connection.

[0019] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0020] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0021] A visual inspection device includes a frame 1 with an inspection station arranged along a conveying direction; the inspection station is equipped with a conveying mechanism capable of clamping and conveying a workpiece 3 to the inspection position, and an inspection mechanism for inspecting the workpiece 3 upon arrival at the inspection position; the inspection mechanism includes: an internal hole measuring device 2 configured to measure the internal hole size of the workpiece 3; a visual inspection assembly mounted via a height adjustment frame, including a first visual detector 41 for acquiring a top image of the workpiece 3, and a second visual detector 42 for acquiring a side image of the workpiece 3; the height adjustment frame is configured to adjust the positions of the first visual detector 41 and the second visual detector 42 relative to the inspection position.

[0022] Furthermore, the height adjustment frame includes a first adjustment structure, a second adjustment structure, and a fixed frame 5 fixed on the frame 1. The fixed frame 5 is provided with a first mounting frame 51 and a second mounting frame 52 that can be independently adjusted vertically. The first adjustment structure is connected between the fixed frame 5 and the first mounting frame 51 to adjust the first visual detector 41 to be closer to or further away from the top of the workpiece 3. The second adjustment structure is connected between the fixed frame 5 and the second mounting frame 52 to adjust the height of the second visual detector 42, thereby aligning different heights of the side of the workpiece 3.

[0023] Furthermore, the first adjustment structure includes a first mounting base 61 that can move and lock along the fixed frame 5, and a first crossbar 62 connected to the first mounting base 61, wherein the first mounting frame 51 is mounted on the first crossbar 62.

[0024] Furthermore, a first bolt is connected to the first mounting base 61, which is used to lock the first mounting base 61 onto the fixing frame 5.

[0025] Furthermore, the second adjustment structure includes a second mounting base 71 that can move and lock along the fixed frame 5, and a second crossbar 72 connected to the second mounting base 71, with the second mounting frame 52 mounted on the second crossbar 72.

[0026] Furthermore, a second bolt is connected to the second mounting base 71, which is used to lock the second mounting base 71 onto the fixing frame 5.

[0027] Furthermore, the conveying mechanism includes a conveying frame 81 slidably disposed on the frame 1, and a cylinder 82 for driving the conveying frame 81 to move; a pair of grippers 810 are disposed on the conveying frame 81, the grippers 810 are connected to a motor, and the motor is used to drive the two grippers 810 to move closer or further away from each other to clamp or release the workpiece 3.

[0028] Furthermore, a collection box 9 is provided below the conveying end of the frame 1 to receive and collect the workpieces 3 that have completed the inspection.

[0029] The working principle of this utility model is as follows: As an embodiment 1, the visual inspection device of this application includes a frame 1, on which a linearly arranged inspection station is provided. To better illustrate the design concept of this application, the transmission mechanism of this application is illustrated using a conveyor frame 81 and a cylinder 82 as examples. The conveyor frame 81 is slidably mounted on the frame 1, and the cylinder 82 is fixed to one end of the frame 1, with its piston rod connected to the conveyor frame 81 to drive the conveyor frame 81 to reciprocate along the guide rail. A set of grippers 810 driven by a motor is installed on the conveyor frame 81. In this embodiment, the motor is preferably a synchronous belt module or a lead screw module, which can control the two grippers 810 to move synchronously towards or away from each other, thereby reliably gripping or releasing the workpiece 3. The inspection mechanism includes an internal hole measuring device 2 and a visual inspection component. The internal hole measuring device 2 is fixed to the frame 1 by a bracket and is located on one side of the inspection station, with its probe facing the internal hole of the workpiece 3. The visual inspection component is mounted via a height adjustment bracket.

[0030] The usage scenario is as follows: The operator or the feeding mechanism places the workpiece 3 to be inspected at the initial position of the conveying mechanism. The motor drives a pair of grippers 810 to move closer together to clamp and fix the workpiece 3. After the workpiece 3 is fixed, the cylinder 82 drives the conveying frame 81 to move, thereby moving the workpiece 3 to the station where the vision inspection component is located through the grippers 810. The first vision detector 41 and the second vision detector 42 respectively acquire image information of the top and side of the workpiece 3. After completion, the workpiece 3 is then transported to the station of the internal hole measuring device 2 for internal hole measurement. It should be noted that at the vision inspection station, the top vision inspection and the side vision inspection can be performed simultaneously by two vision detectors. After all the inspection items at all stations are completed, the conveying mechanism transports the workpiece 3 to the end of the frame 1, the grippers 810 are released, and the workpiece 3 can fall into the collection box 9 for collection. In this embodiment of the application, the workpiece 3 is illustrated by a worm gear component to illustrate the working principle. In this embodiment, the core of the first vision detector 41 and the second vision detector 42 is an industrial camera (such as a CMOS or CCD area array camera). Each of these devices is equipped with an industrial lens and a dedicated light source (such as a dome light for the first visual detector and a strip light for the second visual detector), together forming a complete image acquisition unit for acquiring top and side images of workpiece 4. The internal hole measuring device 2 is implemented using a pneumatic measuring instrument (also known as a pneumatic gauge).

[0031] Based on the above technical solution, the structural fit principle of the height adjustment frame is as follows: Adjustment of the first visual detector 41: A first mounting bracket 51 capable of independent vertical adjustment is provided on the fixing frame 5. Specifically, the first adjustment structure includes a first mounting base 61 that can move vertically along the fixing frame 5 and is fixed by a first locking bolt. A first crossbar 62 is connected to the first mounting base 61. The first visual detector 41 is mounted on the end of the first crossbar 62 via the first mounting bracket 51, with its lens pointing vertically downwards. By loosening the first locking bolt, the first mounting base 61 can be moved up and down as a whole. After moving to the designated position, the first locking bolt fixes the first mounting base 61 at the designated height, thereby coarsely adjusting the height of the first visual detector 41.

[0032] Adjustment of the second visual detector 42: Similarly, the mounting bracket 5 is provided with a second mounting bracket 52 that can be vertically adjusted independently of the first mounting bracket 51. The second adjustment structure includes a second mounting base 71, a second crossbar 72, and corresponding second locking bolts. The second visual detector 42 is mounted on the end of the second crossbar 72 via the second mounting bracket 52, so that its lens is horizontally aligned with the side of the workpiece 3. Its adjustment method is similar to that of the first visual detector 41. By moving the second mounting base 71 and the second crossbar 72, the lens of the second visual detector 42 can be aligned with a specific area to be detected on the side of the workpiece 3.

[0033] This invention, through the coordinated structure of the internal hole measuring device 2, the first visual detector 41, and the second visual detector 42, avoids the cumbersome process of repeatedly transferring, positioning, and clamping the workpiece 3 between different inspection units. After a single positioning and clamping, the workpiece 3 can sequentially complete all inspection items, significantly shortening the total inspection time for a single workpiece 3. Furthermore, by configuring the first visual detector 41 and the second visual detector 42 supported by a height-adjustable frame, this invention can synchronously and statically acquire high-quality images of the top and sides of the workpiece 3 at a single workstation without rotating it. This simplifies the mechanical structure of the equipment, improves system reliability, avoids image blurring caused by workpiece 3 movement, and fundamentally eliminates blind spots in single-view inspection, ensuring the comprehensiveness and accuracy of appearance inspection.

[0034] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A visual inspection device, characterized in that, The system includes a frame (1) on which a detection station is arranged along the conveying direction; the detection station is provided with a conveying mechanism capable of clamping and conveying a workpiece (3) to the detection position, and a detection mechanism for detecting the workpiece (3) arriving at the detection position; the detection mechanism includes: an inner hole measuring device (2) configured to measure the inner hole size of the workpiece (3), the inner hole measuring device (2) being a pneumatic measuring instrument; a vision inspection assembly mounted via a height adjustment frame, and including a first vision detector (41) for acquiring a top image of the workpiece (3), and a second vision detector (42) for acquiring a side image of the workpiece (3); the height adjustment frame is configured to adjust the positions of the first vision detector (41) and the second vision detector (42) relative to the detection position.

2. The visual inspection device according to claim 1, characterized in that, The height adjustment frame includes a first adjustment structure, a second adjustment structure, and a fixed frame (5) fixed on the frame (1). The fixed frame (5) is provided with a first mounting frame (51) and a second mounting frame (52) that can be independently adjusted vertically. The first adjustment structure is connected between the fixed frame (5) and the first mounting frame (51) to adjust the first vision detector (41) to be closer to or further away from the top of the workpiece (3). The second adjustment structure is connected between the fixed frame (5) and the second mounting frame (52) to adjust the height of the second vision detector (42) to align with different heights of the side of the workpiece (3).

3. The visual inspection device according to claim 2, characterized in that, The first adjustment structure includes a first mounting base (61) that can be moved and locked along the fixed frame (5), and a first crossbar (62) connected to the first mounting base (61), wherein the first mounting frame (51) is mounted on the first crossbar (62).

4. The visual inspection device according to claim 3, characterized in that, The first mounting base (61) is connected to a first bolt, which is used to lock the first mounting base (61) onto the fixing frame (5).

5. A visual inspection device according to claim 2, characterized in that, The second adjustment structure includes a second mounting base (71) movable and lockable along the fixed frame (5), and a second crossbar (72) connected to the second mounting base (71), the second mounting frame (52) being mounted on the second crossbar (72).

6. A visual inspection device according to claim 5, characterized in that, A second bolt is connected to the second mounting base (71), which is used to lock the second mounting base (71) onto the fixing frame (5).

7. A visual inspection device according to claim 1, characterized in that, The conveying mechanism includes a conveying frame (81) slidably mounted on the frame (1) and a cylinder (82) for driving the conveying frame (81) to move; a pair of grippers (810) are provided on the conveying frame (81), and the grippers (810) are connected to a motor, which is used to drive the two grippers (810) to move closer or further away from each other to clamp or release the workpiece (3).

8. A visual inspection device according to claim 1, characterized in that, A collection box (9) is provided below the conveying end of the frame (1) to receive and collect the workpieces (3) that have completed the inspection.

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