Anti-shaking mechanism and visual inspection equipment

Abstract

The utility model provides an anti-shake mechanism and visual inspection equipment, the anti-shake mechanism comprises pinch roller components rotatably arranged on two sides of a conveyor belt for conveying tools, a base plate fixedly arranged below the conveyor belt, and a gap between the pinch roller components and the base plate for the conveyor belt to pass through, the projection of the connecting line of the pressing wheel assemblies on the two sides on the horizontal plane is located in the projection of the visual camera on the horizontal plane, or the projection of the visual camera on the horizontal plane is located in the projection of a graph defined by the pressing wheel assemblies on the two sides on the horizontal plane. The problem of shaking generated when the conveying belt conveys workpieces is solved, and then the detection precision is guaranteed.

Description

Technical Field

[0001] This application relates to the field of visual inspection, and more specifically, to a shake-resistant mechanism and a visual inspection device. Background Technology

[0002] With the continuous development of society, visual inspection has gradually replaced the original manual inspection. It is not only highly automated, greatly freeing up labor, but also has a lower error rate and higher inspection efficiency compared to manual inspection. However, current visual inspection has also encountered a research and development bottleneck. In most current visual inspection, the workpiece is usually transported using conveyor rollers. When using conveyor rollers, which consist of multiple rollers with certain intervals between them, when the workpiece is transferred from one roller to another, the workpiece may experience brief pauses or vibrations during transport due to issues such as the rotation synchronization of the rollers and the contact between the workpiece and the roller. This affects the continuity of transport and the accuracy of visual inspection. In addition, the speed of the conveyor rollers may be affected by various factors, such as the drive characteristics of the motor, the wear of the rollers, and the interaction between the workpiece and the roller, resulting in certain speed fluctuations. While using conveyor belts can effectively solve the problems of continuity and speed stability, the conveyor belt will vibrate when transporting the workpiece, especially at the inspection station. This slight vibration can affect the inspection accuracy of the visual camera.

[0003] Therefore, existing visual inspection equipment needs to be improved to overcome the above-mentioned shortcomings. Utility Model Content

[0004] The main purpose of this application is to provide an anti-vibration mechanism and a visual inspection device. By setting up an anti-vibration mechanism, the vibration generated by the conveyor belt transporting the workpiece is solved, thereby ensuring the accuracy of the inspection.

[0005] To achieve the above objectives, in a first aspect, this application provides an anti-vibration mechanism, including pressure roller assemblies rotatably disposed on both sides of a conveyor belt for a conveying tool, and a pad fixedly disposed below the conveyor belt. There is a gap between the pressure roller assemblies and the pad for the conveyor belt to pass through. The projection of the line connecting the two pressure roller assemblies on the horizontal plane is located within the projection of a vision camera on the horizontal plane, or the projection of the vision camera on the horizontal plane is located within the projection of the pattern formed by the two pressure roller assemblies on the horizontal plane.

[0006] Optionally, the pressure roller assembly includes a mounting bracket fixedly mounted on the frame and a pressure roller rotatably mounted on the mounting bracket.

[0007] Optionally, two sets of pressure roller assemblies are provided on each side of the conveyor belt.

[0008] Optionally, the distance between the two sets of pressure roller assemblies is greater than the width of the workpiece.

[0009] To achieve the above objectives, in a second aspect, this application provides a visual inspection device, including a frame, a conveyor belt disposed on the frame for transporting workpieces, a visual camera disposed on the frame, the visual camera being located directly above the conveyor belt, and the frame also being provided with the aforementioned anti-shake mechanism.

[0010] Optionally, the frame is also equipped with a sensor for detecting products. The sensor is electrically connected to the controller of the vision camera, and the sensor and the vision camera are distributed sequentially along the conveying direction of the conveyor belt.

[0011] Optionally, the frame is further provided with a material guiding mechanism, which is located at the feed end of the conveyor belt.

[0012] Optionally, the material guiding mechanism includes a first guide rod and a second guide rod, both of which include a straight section and an inclined section.

[0013] Optionally, sliding frames are slidably arranged on both sides of the frame along the width direction of the conveyor belt, and the first guide rod and the second guide rod are respectively fixedly arranged on the corresponding sliding frames on both sides.

[0014] Optionally, a waste recycling bin is provided on one side of the frame, and a pushing mechanism is provided on the opposite side of the frame to push the waste on the conveyor belt into the waste recycling bin.

[0015] The present invention provides an anti-vibration mechanism and a visual inspection device. Compared with the prior art, its advantages are as follows: by setting the anti-vibration mechanism at the inspection station, that is, by using the pressure roller assembly and the pad, the conveyor belt passing through the inspection station will not vibrate, thereby ensuring that the workpiece will not vibrate during inspection, thus ensuring the inspection accuracy. Moreover, the conveyor belt has good conveying continuity and speed stability when transporting workpieces. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0017] Figure 1 This is a diagram of a visual inspection device. Figure 1 ;

[0018] Figure 2This is a diagram of a visual inspection device. Figure 2 .

[0019] The components include: 1. Frame; 2. Pressure roller assembly; 3. Pad plate; 4. Conveyor belt; 5. First guide rod; 6. Second guide rod; 7. Sliding frame; 8. Sensor; 9. Material counting sensor; 10. Waste recycling bin; 11. Vision camera. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] In addition, the term "multiple" should mean two or more.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-2 As shown, an anti-vibration mechanism includes pressure roller assemblies 2 rotatably disposed on both sides of a conveyor belt 4 used for conveying tools, and a pad 3 fixedly disposed below the conveyor belt 4. There is a gap between the pressure roller assemblies 2 and the pad 3 for the conveyor belt 4 to pass through. The projection of the line connecting the two pressure roller assemblies 2 on the horizontal plane is located within the projection of the vision camera 11 on the horizontal plane, or the projection of the vision camera 11 on the horizontal plane is located within the projection of the pattern formed by the two pressure roller assemblies 2 on the horizontal plane.

[0027] It should be noted that the purpose of limiting the position of the pressure roller assembly 2 and the vision camera 11 is to ensure that the conveyor belt 4 will not vibrate at the inspection station by utilizing the cooperation of the pressure roller assembly 2 and the pad 3. This ensures that the workpiece will not vibrate when being inspected. Therefore, when there is only one set of pressure rollers on each side, the line connecting the pressure rollers is located directly below the vision camera 11. When there are two or more sets of pressure rollers on each side, it can be ensured that the conveyor belt 4 will not vibrate within a certain area, and the vision camera 11 can precisely inspect the workpiece within that area, thereby ensuring the inspection accuracy. This overcomes the disadvantages of conveyor belt 4 in conveying workpieces, making it superior to conveyor rollers in conveying workpieces.

[0028] Preferably, the pressure roller assembly 2 includes a mounting bracket fixedly mounted on the frame 1 and a pressure roller rotatably mounted on the mounting bracket.

[0029] In order to ensure that the conveyor belt 4 does not vibrate within the detection area, two sets of pressure roller assemblies 2 are provided on each side of the conveyor belt 4, and the distance between the two sets of pressure roller assemblies 2 is greater than the width of the workpiece.

[0030] like Figure 1 , Figure 2 As shown, a visual inspection device includes a frame 1, a conveyor belt 4 disposed on the frame 1 for transporting workpieces, and a visual camera 11 disposed on the frame 1. The visual camera 11 is located directly above the conveyor belt 4, and the frame 1 is also provided with the aforementioned anti-shake mechanism.

[0031] To improve automation efficiency, the frame 1 is also equipped with a sensor 8 for detecting products. The sensor 8 is electrically connected to the controller of the vision camera 11. The sensor 8 and the vision camera 11 are distributed sequentially along the conveying direction of the conveyor belt 4. When the workpiece is conveyed on the conveyor belt 4 and detected by the sensor 8, the sensor 8 sends a control signal to the controller of the vision camera 11. The controller controls the vision camera 11 to take pictures of the workpiece. Thus, the vision camera 11 does not need to take pictures manually, thereby ensuring that the workpiece can be continuously detected and greatly improving efficiency.

[0032] In order to enable the workpiece to be automatically positioned in the middle of the conveyor belt 4, a guiding mechanism is also provided on the frame 1. The guiding mechanism is located at the feed end of the conveyor belt 4. The guiding mechanism includes a first guide rod 5 and a second guide rod 6. Both the first guide rod 5 and the second guide rod 6 include a straight section and an inclined section. After the workpiece passes through the guiding mechanism, it is automatically positioned in the middle of the conveyor belt 4 and is conveyed by the conveyor belt 4 to the area below the vision camera 11 for inspection. This ensures that the product can be completely detected by the vision camera 11 and avoids the situation where defects are missed.

[0033] In order to guide workpieces of different sizes, sliding frames 7 are slidably arranged on both sides of the frame 1 along the width direction of the conveyor belt 4. The first guide rod 5 and the second guide rod 6 are respectively fixedly arranged on the corresponding sliding frames 7 on both sides. By adjusting the sliding frames 7, the distance between the first guide rod 5 and the second guide rod 6 can be adjusted, thereby adapting to workpieces of different sizes.

[0034] In order to automatically count the workpieces being inspected and thus improve the level of automation, a material counting sensor 9 is also provided on the frame 1, which is located at the discharge end of the conveyor belt 4.

[0035] In order to automatically distinguish between defective and qualified workpieces, a waste recycling bin 10 is provided on one side of the frame 1, and a pushing mechanism is provided on the opposite side of the frame 1 to push the waste on the conveyor belt 4 into the waste recycling bin 10. The specific structure of the pushing mechanism is not an innovation of this application. The pushing mechanisms in the prior art can all be used here, and the specific structure will not be described in detail.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-shake mechanism, characterized in that, It includes pressure roller assemblies rotatably disposed on both sides of a conveyor belt used for conveying tools, and a pad fixedly disposed below the conveyor belt. There is a gap between the pressure roller assemblies and the pad for the conveyor belt to pass through. The projection of the line connecting the two pressure roller assemblies on the horizontal plane is located within the projection of the vision camera on the horizontal plane, or the projection of the vision camera on the horizontal plane is located within the projection of the pattern formed by the two pressure roller assemblies on the horizontal plane.

2. A de-jittering mechanism as claimed in claim 1, characterized in that: The pressure roller assembly includes a mounting bracket fixedly mounted on the frame and a pressure roller rotatably mounted on the mounting bracket.

3. A de-jittering mechanism as claimed in claim 1, characterized in that: Two sets of pressure roller assemblies are provided on each side of the conveyor belt.

4. A de-jittering mechanism as claimed in claim 3, characterized in that: The distance between the two sets of pressure roller assemblies is greater than the width of the workpiece.

5. A vision inspection apparatus characterized by: The device includes a frame, a conveyor belt mounted on the frame for transporting workpieces, and a vision camera mounted on the frame, the vision camera being located directly above the conveyor belt. The frame is also provided with an anti-vibration mechanism as described in any one of claims 1-4.

6. The visual inspection device as described in claim 5, characterized in that: The frame is also equipped with sensors for detecting products. The sensors are electrically connected to the controller of the vision camera. The sensors and the vision camera are distributed sequentially along the conveyor belt's conveying direction.

7. A vision inspection apparatus as claimed in claim 5, characterized in that: The frame is also equipped with a material guiding mechanism, which is located at the feed end of the conveyor belt.

8. A vision inspection apparatus as claimed in claim 7, characterised in that: The material guiding mechanism includes a first guide rod and a second guide rod, both of which include a straight section and an inclined section.

9. A vision inspection apparatus as claimed in claim 8, characterised in that: The frame has sliding frames on both sides that slide along the width of the conveyor belt, and the first guide rod and the second guide rod are fixedly mounted on the corresponding sliding frames on both sides.

10. A vision inspection apparatus as claimed in claim 5, characterized in that: A waste recycling bin is provided on one side of the frame, and a pushing mechanism is provided on the opposite side of the frame to push the waste on the conveyor belt into the waste recycling bin.

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