Visual inspection device for inner wall of rotary body

Abstract

The invention discloses a visual inspection device for the inner wall of a rotary body, and relates to the technical field of visual inspection, the device can perform high-precision imaging on the inner walls of the rotary body such as a cavity and a round hole, and the device can adapt to different space sizes by utilizing a modular replaceable design, and has high imaging precision and high adaptability. Meanwhile, the equipment safety is improved, high-precision imaging can be carried out on the inner wall of a small space, and the device is suitable for occasions with limited space and high detection requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of visual detection, in particular to a visual detection device for inner wall of a rotary body. BACKGROUND

[0002] In the process of manufacturing, the surface of the workpiece needs to be visually detected. However, for the cavity and hole features of the workpiece, the conventional industrial lens cannot be inserted to capture the image, the existing inner hole probe is only suitable for small size cylindrical inner cavity and does not have the function of explosion-proof, and the existing endoscope needs to be manually operated and has poor imaging quality.

[0003] Referring to patent application CN201711054639, a 360° inner hole side wall detection lens. The lens is inserted into the inner cavity, a curved mirror is used to reflect the image in the annular area on the side to the center optical axis of the lens, and the imaging of the inner hole side wall is completed.

[0004] This method uses a mirror to reflect and image the entire side wall of the inner hole at the same time, which has good effect on annular inner holes, otherwise it is limited by the depth of field of the lens and cannot be clearly imaged; at the same time, the device itself is limited, especially the volume of the mirror, the adaptable camera and lens are limited, and cannot support ultra-high resolution; in addition, this scheme does not realize the explosion-proof function.

[0005] There are mainly two forms of industrial endoscopes, one is to integrate a small size optical module at the front end of the probe to capture and image, and to transmit the image signal to the rear end through a data line; the other is to use an optical fiber to conduct the image at the front end of the probe to the rear end, and to capture and image at the rear end.

[0006] However, the industrial endoscope often needs to be manually operated to make the flexible front end probe inserted into the appropriate position for imaging, and at the same time, the imaging quality is very low due to the small size of the probe. SUMMARY

[0007] In view of the above problems, the present application provides a visual detection device for inner wall of a rotary body to overcome the above problems or at least partially solve the above problems. The existing visual detection technology is widely used in the production and manufacturing process, but the visual detection equipment usually involves a large volume, cannot well image the inner wall of the cavity and hole, and involves many electrical equipment, which is not convenient to realize the explosion-proof function and other problems.

[0008] The present application provides the following solutions: A visual detection device for inner wall of a rotary body, comprising: A mounting bracket for carrying various components, a hollow structure is formed on the mounting bracket; An imaging unit, comprising a camera and a light source, both of which are connected to the upper part of the mounting bracket, and the lens of the camera and the light source are opposite to the hollow structure; A reflecting unit, comprising a mirror bracket and a plane mirror, the mirror bracket has a hollow cylindrical structure, one end of the mirror bracket is connected to the mounting bracket; the plane mirror is inclined at a target angle and connected to the lower end of the mirror bracket, and the plane mirror is used to reflect the inner wall picture to a direction parallel to the camera optical axis; A driving unit connected to the mounting bracket, the driving unit is used to drive the mirror bracket to rotate.

[0009] Preferably: further comprising a cylindrical explosion-proof box, one end of the cylindrical explosion-proof box is connected to the mounting bracket, so that the imaging unit is sealed inside the cylindrical explosion-proof box.

[0010] Preferably: one end of the mirror bracket is connected to the mounting bracket through a bearing.

[0011] Preferably: the driving unit comprises a motor connected to the mounting bracket, and the output shaft of the motor is connected to the mirror bracket through a transmission mechanism.

[0012] Preferably: the transmission mechanism comprises a synchronous wheel and a synchronous belt; the synchronous wheel is fixedly connected to the mirror bracket, and the synchronous wheel is connected to the output shaft of the motor through the synchronous belt.

[0013] According to the specific embodiments of the present application, the following technical effects are disclosed: The rotary inner wall visual detection device provided by the embodiment of the present application can perform high-precision imaging on the inner wall of a cavity, a circular hole and other rotary bodies, and adapt to different space sizes by using modular and replaceable design, and has high imaging precision and high adaptability. At the same time, the device safety is improved, and the inner wall of a small space can be imaged with high precision, and is suitable for occasions with limited space and high detection requirements.

[0014] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 is a structural schematic view of a rotary inner wall visual detection device provided by an embodiment of the present application; Figure 2 is an axonometric view of a rotary inner wall visual detection device provided by an embodiment of the present application.

[0017] In the figure: mounting bracket 1, camera 2, light source 3, mirror bracket 4, plane mirror 5, cylindrical explosion-proof box 6, motor 7, synchronous wheel 8, synchronous belt 9. DETAILED DESCRIPTION

[0018] 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 of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0019] Reference is made to Figure 1 , Figure 2 A rotary inner wall visual detection device provided by an embodiment of the present application is shown in FIG. 1, which can include: Figure 1 , Figure 2 A mounting bracket 1 is used to carry various components, and a hollow structure is formed in the mounting bracket 1. An imaging unit includes a camera 2 and a light source 3, both of which are connected to the upper part of the mounting bracket 1, and the lens of the camera 2 and the light source 3 are opposite to the hollow structure. A reflection unit includes a mirror bracket 4 and a plane mirror 5. The mirror bracket 4 has a hollow cylindrical structure, and one end of the mirror bracket 4 is connected to the mounting bracket 1. The plane mirror 5 is inclined at a target angle and is connected to the lower end of the mirror bracket 4. The plane mirror 5 is used to reflect the inner wall picture to a direction parallel to the optical axis of the camera 2. A driving unit is connected to the mounting bracket 1, and is used to drive the mirror bracket 4 to rotate. In a specific implementation, one end of the mirror bracket 4 is connected to the mounting bracket 1 through a bearing.

[0020] ​The driver of the driving unit provided by the embodiment of the present application can adopt various forms. For example, in one implementation, the embodiment of the present application can provide that the driving unit comprises a motor 7 connected with the mounting bracket 1, and an output shaft of the motor 7 is connected with the mirror bracket 4 through a transmission mechanism. Further, the transmission mechanism comprises a synchronous wheel 8 and a synchronous belt 9; the synchronous wheel 8 is fixedly connected with the mirror bracket 4, and the synchronous wheel 8 is connected with the output shaft of the motor 7 through the synchronous belt 9.

[0021] In order to further improve the explosion-proof performance of the device, the embodiment of the present application can also provide a cylindrical explosion-proof box 6, one end of the cylindrical explosion-proof box 6 is connected with the mounting bracket 1, so that the imaging unit is sealed inside the cylindrical explosion-proof box 6.

[0022] The rotary body inner wall visual detection device provided by the embodiment of the present application adopts a rotary reflection mechanism, reflects the inner wall picture to the vertical direction through the plane mirror 5, and obtains the complete inner wall image by rotating and scanning the mirror through the mechanical structure. The mirror bracket 4 and the mounting bracket 1 are both hollow structures, the mirror bracket 4 has an opening on the side for light to pass through, and does not block the light path. The mirror and its bracket size can be replaced to adapt to different sizes of inner cavity space and shooting picture frame.

[0023] The imaging unit comprises replaceable camera 2, lens and light source 3 components, which realize lighting and shooting imaging. The imaging mechanism is closed in the explosion-proof box to realize the explosion-proof function. The driving unit connects the imaging mechanism and the rotary reflection mechanism, and drives the rotary reflection mechanism to rotate. The driving mechanism uses an explosion-proof motor 7 to realize the explosion-proof function.

[0024] The device provided by the embodiment of the present application comprises a mounting bracket 1, a camera 2 (including a lens), a light source 3, a mirror bracket 4, a plane mirror 5, a cylindrical explosion-proof box 6, a motor 7, a synchronous wheel 8, and a synchronous belt 9.

[0025] The connection relationship is that the camera 2 (including the lens) and the light source 3 are installed in the cylindrical explosion-proof box 6, the cylindrical explosion-proof box 6 and the motor 7 are installed on the mounting bracket 1, the mirror bracket 4 and the synchronous wheel 8 are connected to the mounting bracket 1 through bearings, the synchronous wheel 8 and the mirror bracket 4 are connected, and the synchronous wheel 8 is connected to the synchronous wheel 8 at the shaft end of the motor 7 through the synchronous belt 9.

[0026] The working process of the visual detection device provided by the embodiment of the present application is as follows: The power mechanism such as robot or module etc. partially inserts the mirror support 4 into the cavity or hole to be measured; the camera 2 takes a picture, the motor 7 drives the plane mirror 5 to rotate through a certain angle, the camera 2 takes another picture, and so on, until the plane mirror 5 rotates through a circle, and the inner wall of the cavity is completely imaged.

[0027] It can be understood that, in order to adapt to different sizes of cavities or holes, the mirror support and the mirror can be replaced as a whole, and the camera and the lens can be selected according to actual imaging requirements.

[0028] The mirror can also be rotated by a mechanical structure to realize the scanning function. The power system can also be placed outside and connected to the mirror support through a transmission mechanism to rotate the mirror. A separate rotating mirror mechanism can also be used with the camera part and the driving mechanism, and a large explosion-proof box and explosion-proof motor can be installed to realize the explosion-proof function. The replaceable mirror and mirror support can adapt to different sizes of cavities and holes.

[0029] In summary, the inner wall visual detection device for a rotary body provided in the present application can image the inner wall of a cavity, a hole or other rotary body with high precision, and can adapt to different space sizes by using the modular replaceable design, and has high imaging precision and high adaptability. At the same time, the safety of the equipment is improved, and the inner wall of a small space can be imaged with high precision, and the device is suitable for occasions with limited space and high detection requirements.

[0030] It should be noted that, in the present text, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0031] The various embodiments described in this specification are presented as examples of the application. Each example is provided by way of best mode, and variations of or additions to these examples can be possible. For example, the various embodiments described in this specification can be combined in different combinations. Further, other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. For example, to implement a system embodiment, one can implement a corresponding method embodiment. To implement a system embodiment, one can implement one or more of the corresponding method embodiments. To implement a system embodiment, one can implement one or more of the corresponding method embodiments. To implement a system embodiment, one can implement one or more of the corresponding method embodiments. One of ordinary skill in the art will be able to practice the application with the disclosed elements and variations thereto without undue experimentation. Therefore, it will be understood that within the scope of the appended claims, the application can be practiced otherwise than is specifically enumerated.

[0032] The above description is embodied in the form of preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A visual inspection device for the inner wall of a rotating body, characterized in that, include: The mounting bracket is used to support various components, and the mounting bracket has a hollow structure. An imaging unit, comprising a camera and a light source, wherein the camera and the light source are both connected to the upper part of the mounting bracket, and the lens of the camera and the light source are both opposite to the hollow structure; The reflection unit includes a mirror bracket and a plane mirror. The mirror bracket has a hollow cylindrical structure, and one end of the mirror bracket is connected to the mounting bracket. The plane mirror is tilted at a target angle and connected to the lower end of the mirror bracket. The plane mirror is used to reflect the image of the inner wall in a direction parallel to the optical axis of the camera. A drive unit is connected to the mounting bracket and is used to drive the reflector bracket to rotate.

2. The visual inspection device for the inner wall of a rotating body according to claim 1, characterized in that, It also includes a cylindrical explosion-proof enclosure, one end of which is connected to the mounting bracket so that the imaging unit is sealed inside the cylindrical explosion-proof enclosure.

3. The visual inspection device for the inner wall of a rotating body according to claim 1, characterized in that, One end of the reflector bracket is connected to the mounting bracket via a bearing.

4. The visual inspection device for the inner wall of a rotating body according to claim 1, characterized in that, The drive unit includes a motor connected to the mounting bracket, and the output shaft of the motor is connected to the reflector bracket through a transmission mechanism.

5. The visual inspection device for the inner wall of a rotating body according to claim 4, characterized in that, The transmission mechanism includes a synchronous pulley and a synchronous belt; the synchronous pulley is fixedly connected to the reflector bracket, and the synchronous pulley is connected to the output shaft of the motor through the synchronous belt.

Images