TWI814036B - Backlight visual orientation system - Google Patents

Abstract

A backlight visual orientation system includes at least one backlight source, a conveying roller set, and a platform. The backlight source is disposed under the conveying roller set. The conveying roller set is disposed under the platform or the conveying roller set overlaps the platform. The conveying roller set has a plurality of conveying rollers. These conveying rollers protrude from a bearing surface of the platform. The platform can provide uniform lighting as well as support effects, so that the light is uniform and there is no shadow. These conveying rollers can convey boards to the platform, so that a Charge-coupled Device (CCD) which is disposed above the platform can capture an image of the boards to accurately identify the position of each board, and the boards can be picked up by a pick-and-place device and be placed in a predetermined position. Therefore, the boards can be accurately positioned, and the boards have no abrasions.

Description

Backlight vision positioning system

The present invention relates to a backlight visual positioning system, and in particular to a backlight visual positioning system that can enhance features through auxiliary lighting so that an image capture device can capture a panel image.

The conveying mechanism can be used to transport panels. However, when the panels are transported to a predetermined position, the entire panel needs to be consolidated. During the positioning of the entire panel, it is easy to produce grinding plates, which will also lead to an increase in costs. Existing machine vision systems used for panel positioning need to use an image capture device (CCD) to capture images of the panel, and a light source must be set up to fill in the light and enhance features through auxiliary lighting. The light source (positive light source) is usually placed above the panel, and a platform needs to be set up next to the conveying mechanism. When the conveying mechanism delivers the panel, the panel needs to be moved to the platform before image capture can be performed. work, and the supplementary light method of the positive light source will also limit the types of plates. In addition, if you want to use a backlight to fill in the light, the backlight will shine on the conveying mechanism, and the light will not shine evenly on the board, and light and shadow will be produced.

The technical problem to be solved by the present invention is to provide a backlight visual positioning system in view of the shortcomings of the existing technology, which can simplify the process of positioning the board, does not require the whole board, is not easy to produce grinding boards, can reduce costs, and can make the light uniform. When illuminated on the board, no light or shadow will be produced, resulting in better image capture effects.

In order to solve the above technical problems, the present invention provides a backlight visual positioning system, which includes: at least one backlight source that can generate light and illuminate upward; a conveying roller group, and the backlight source is arranged below the conveying roller group. The conveying roller set has a plurality of conveying rollers; and a platform, the platform is translucent, the platform is disposed above or overlapping the conveying roller set, the platform has a bearing surface, and the conveying rollers protrude from the platform The conveying roller group can transport the plate to the bearing surface of the platform, and the light generated by the backlight can illuminate the platform and evenly illuminate the plate through the platform.

Preferably, the platform is close to the backlight source, and the distance between the backlight source and the platform is less than 10 cm.

Preferably, the distance between the backlight and the platform is 3 to 5 cm.

Preferably, the conveying rollers are translucent.

[Beneficial effects of the embodiment]

The beneficial effect of the present invention is that the backlight visual positioning system provided by the present invention includes a backlight source, a conveying roller set and a platform. The backlight source is arranged below the conveying roller set. The conveying roller set has multiple conveying rollers, and the platform is light-transmissive. , the platform is arranged above or overlapping the conveying roller set. The conveying rollers protrude from the bearing surface of the platform. The conveying roller set can convey the panels to the bearing surface of the platform. The light generated by the backlight can illuminate the platform, and Through the platform, the plate is uniformly irradiated. When the image capture device captures the image of the plate, the position of the plate can be accurately identified.

The present invention can use the conveying roller group to directly transport the plate to the platform, so that the image capture operation can be performed, and the process of positioning the plate can be simplified. There is no need to complete the whole plate, it is not easy to produce grinding plates, and the cost can be reduced. The present invention adopts a backlight supplementary light method. The types of boards are less limited and easier to use. Moreover, the platform of the present invention can provide support and light uniformity effects, so that light can be uniformly irradiated on the board without any light or shadow. , can have better image capture effect.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and illustration and are not used to limit the present invention.

The following is a description of the relevant implementation modes disclosed in the present invention through specific specific examples. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depictions based on actual dimensions, as is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of the present invention. In addition, the term "or" used in this article shall include any one or combination of more of the associated listed items depending on the actual situation.

[Example]

Referring to FIGS. 1 to 4 , the present invention provides a backlight visual positioning system, which includes at least one backlight source 1 , a conveyor roller group 2 and a platform 3 . The backlight sources 1 may be provided with one or more. In this embodiment, there are multiple backlight sources 1 . The backlight sources 1 may be spaced apart or closely adjacent to each other. The number and arrangement of the backlight sources 1 are not limited. , these backlight sources 1 can generate light and illuminate upward. In this embodiment, the backlight sources 1 are all in the shape of square plates, the backlight sources 1 are arranged at intervals, and the backlight sources 1 are located at the same horizontal height. In addition, in another embodiment of the present invention, an adjustable backlight source 1 can also be used. When the captured image is unclear, the light can be automatically adjusted to make the captured image clearer.

The conveying roller group 2 is located above the backlight sources 1, so that the backlight sources 1 are arranged below the conveying roller group 2, and the conveying roller group 2 is arranged below the platform 3. The backlight source 1 can brighten the backlight type. light source. The conveying roller set 2 has a plurality of conveying rollers 21. The conveying rollers 21 protrude from the top surface (bearing surface 31) of the platform 3. The height of the conveying rollers 21 protruding from the platform 3 is not limited, as long as it can be used. Just touch the board. Specifically, the conveying roller set 2 can have a plurality of transmission shafts 22, the transmission shafts 22 are arranged at intervals, and the transmission shafts 22 can be parallel to each other, and the conveying rollers 21 are respectively arranged on the transmission shafts 22. , the conveying rollers 21 can rotate synchronously with the transmission shafts 22 . Both ends of the transmission shafts 22 can be pivoted on two support rods 23 respectively. The two support rods 23 are arranged at intervals, and the two support rods 23 can be parallel to each other. The conveying roller set 2 can also have a power source 24, which can be a motor, etc. The power source 24 can be connected to the transmission shafts 22 through a transmission mechanism 25 (such as a belt set), so the power source can be used 24 drives the transmission mechanism 25 to operate, thereby driving the transmission shafts 22 and the conveying rollers 21 to rotate to convey the movement of the plate.

The conveying rollers 21 can be made of light-transmitting material, so that the conveying rollers 21 have light-transmitting properties. In this embodiment, each conveying roller 21 may include a roller body 211, an outer ring body 212 and two side plates 213 (as shown in Figure 5). The roller body 211 is a circular wheel body, and the roller body 211 is The outer ring body 212 is fixed on the transmission shaft 22. The outer ring body 212 is a circular ring body. The outer ring body 212 is sleeved outside the roller body 211. The two side plates 213 are sleeved and fixed on the transmission shaft 22, and the two side plates 213 are respectively located on Both sides of the roller body 211, the roller body 211, the outer ring body 212 and the side plates 213 can be made of light-transmitting materials.

The platform 3 can be made of light-guiding material. The platform 3 has light transmittance. The platform 3 is in the form of a plate. In this embodiment, the platform 3 is in the form of a square plate. Preferably, the platform 3 is a Plate of equal thickness. The platform 3 can be disposed above the conveying roller group 2, and can also overlap with the conveying roller group 2. The platform 3 has a bearing surface 31, and the bearing surface 31 is located on the top surface of the platform 3. The bearing surface 31 is relatively Preferably, it is a flat surface, and the bearing surface 31 can be used to place boards. When the light from the backlight 1 shines on the platform 3, the light can be evenly transmitted to the bearing surface 31 of the platform 3, so that the bearing surface 31 placed on the platform 3 can The panels on the surface 31 receive light uniformly, so that the platform 3 can provide light uniformity and support effects, and the platform 3 can also block the high temperature generated by the backlight 1 to prevent the high temperature from affecting the panels. Preferably, the platform 3 is close to the backlight source 1 so that the light can be more uniform. Preferably, the distance between the backlight source 1 and the platform 3 is less than 10cm. The optimal distance between the backlight source 1 and the platform 3 is 3 to 5cm. By moving the backlight 1 closer to the platform 3, a better light uniformity effect can be achieved.

In this embodiment, the platform 3 is provided with a plurality of through holes 32 at intervals, and the through holes 32 penetrate through both sides of the platform 3 , that is, the through holes 32 penetrate through the bearing surface 31 (top surface) and the bottom surface of the platform 3 . The through holes 32 may be square holes, but are not limited thereto. The through holes 32 respectively correspond to the conveying rollers 21, so that the conveying rollers 21 can respectively protrude from the bearing surface 31 of the platform 3 through the through holes 32. top surface), so when the conveying rollers 21 rotate, the plate can be conveyed and moved. In this embodiment, the area of the bearing surface 31 of the platform 3 is smaller than the distribution area of the conveying rollers 21 , that is, only part of the conveying rollers 21 corresponds to the platform 3 , and other parts of the conveying rollers 21 are One end (front end) of the platform 3 is exposed. However, the area of the bearing surface 31 of the platform 3 is not limited and can be increased or decreased according to needs. The area of the bearing surface 31 of the platform 3 can be changed according to the area of the plate it carries. .

In this embodiment, a support frame 6 can be provided below the platform 3, and the support frame 6 can be fixed in an appropriate position. The support frame 6 can have a plurality of support portions 61, and the support portions 61 are spaced apart. The support portions 61 extend upward to form an upright shape. The upper ends of the support portions 61 can resist or penetrate the platform 3 to support the platform 3 so that the platform 3 is positioned stably.

These conveying rollers 21 can transport the board to the platform 3, and then an image capturing device 4 (shown in Figure 6) disposed above the platform 3 can be used to capture the image of the board, and be used with image recognition software for detection. The image capturing device 4 can be CCD or CMOS, etc., and at least one image capturing device 4 is provided. The number of image capturing devices 4 is not limited. For example, two or more image capturing devices 4 can be provided. To photograph the diagonal position of the board, etc. A pick-and-place device 5 can also be provided on one side of the platform 3. The pick-and-place device 5 can be a robotic arm. When the image capture of the plate is completed, the pick-and-place device 5 can be used to take out the plate placed on the platform 3. pieces.

The conveying roller set 2 of the present invention can transport the plate to a predetermined position on the bearing surface 31 of the platform 3 so that the platform 3 can be used to support the plate, and the backlight 1 can illuminate light upward, so that the light can illuminate the platform 3 and pass through it. The platform 3 evenly illuminates the panel to enhance the features through auxiliary lighting, and then the image capture device 4 installed above the platform 3 can be used to capture the image of the panel to accurately identify the position of the panel, and then the The pick-and-place device 5 grabs the board and places it in a predetermined position. The image capture device 4 captures the image of the panel and uses image recognition software for detection, which can perform positioning, inspection, measurement and identification in a timely manner during the production process.

[Beneficial effects of the embodiment]

The beneficial effect of the present invention is that the backlight visual positioning system provided by the present invention includes a backlight source, a conveying roller set and a platform. The backlight source is arranged below the conveying roller set. The conveying roller set has multiple conveying rollers, and the platform has a light-transmitting property, the platform is set above or overlapping the conveying roller set. The conveying rollers protrude from the bearing surface of the platform. The conveying roller set can convey the panels to the bearing surface of the platform, and the light generated by the backlight can illuminate the platform. The platform evenly illuminates the plate. When the image capture device captures the image of the plate, the position of the plate can be accurately identified.

The present invention can use the conveying roller group to directly transport the plate to the platform, so that the image capture operation can be performed, and the process of positioning the plate can be simplified. There is no need to complete the whole plate, it is not easy to produce grinding plates, and the cost can be reduced. The present invention adopts a backlight supplementary light method. The types of boards are less limited and easier to use. Moreover, the platform of the present invention can provide support and light uniformity effects, so that light can be uniformly irradiated on the board without any light or shadow. , can have better image capture effect.

The contents disclosed above are only preferred and feasible embodiments of the present invention, and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

1: Backlight 2: Conveying roller group 21: Conveying roller 211:Roller body 212: Outer ring body 213:Side panel 22: Drive shaft 23:Support rod 24:Power source 25: Transmission mechanism 3: Platform 31: Bearing surface 32:Perforation 4:Image capture device 5: Pick and place device 6: Support frame 61: Support part

Figure 1 is a perspective view of the backlight visual positioning system of the present invention.

Figure 2 is a perspective view of the backlight visual positioning system of the present invention from another angle.

Figure 3 is a three-dimensional exploded view of the backlight visual positioning system of the present invention.

Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 1 .

Figure 5 is an exploded perspective view of the conveying roller of the present invention.

Figure 6 is a schematic diagram of the backlight visual positioning system equipped with an image capture device and a pick and place device according to the present invention.

1: Backlight

2: Conveying roller group

21: Conveying roller

211:Roller body

212: Outer ring body

213:Side panel

22: Drive shaft

23: Support frame

3: Platform

31: Bearing surface

32:Perforation

6: Support frame

61: Support part

Claims (10)

A backlight visual positioning system, including: at least one backlight source, which can generate light and illuminate upward; a conveying roller group, the backlight source is arranged below the conveying roller group, and the conveying roller group has a plurality of conveying rollers; And a platform, the platform is translucent, the platform is arranged above or overlaps the conveying roller group, the platform has a bearing surface, and the conveying rollers protrude from the bearing surface of the platform; wherein the conveying roller group can The panel is transported to the bearing surface of the platform, and the light generated by the backlight can illuminate the platform and evenly illuminate the panel through the platform. The backlight visual positioning system as described in claim 1, wherein the platform is close to the backlight source, and the distance between the backlight source and the platform is less than 10cm. The backlight visual positioning system as described in claim 2, wherein the distance between the backlight source and the platform is 3 to 5 cm. The backlight visual positioning system as claimed in claim 1, wherein the conveying rollers are light-transmissive. The backlight visual positioning system of claim 1, wherein each conveying roller includes a roller body, an outer ring body and two side plates, the roller body is fixed on a transmission shaft, and the outer ring body is sleeved on the Outside the roller body, the two side plates are fixed on the transmission shaft, and the two side plates are located on both sides of the roller body. The roller body, outer ring body and two side plates of each conveying roller are all made of light-transmitting materials. The backlight visual positioning system as claimed in claim 1, wherein a plurality of backlight sources are provided, the backlight sources are spaced apart or closely adjacent to each other, and the backlight sources are located at the same horizontal height. The backlight visual positioning system as described in claim 1, wherein the platform is provided with A support frame is provided. The support frame has a plurality of support parts. The upper ends of the support parts are in contact with or penetrate the platform to support the platform. The backlight visual positioning system as claimed in claim 1, wherein the platform is provided with a plurality of perforations at intervals, and the perforations respectively correspond to the conveying rollers, so that the conveying rollers protrude from the through-holes respectively. The bearing surface of the platform. The backlight visual positioning system as described in claim 1, wherein the platform is in the form of a plate, the platform is a plate of equal thickness, and the area of the bearing surface of the platform is smaller than the area where the conveying rollers are distributed. The backlight visual positioning system as described in claim 1, wherein at least one image capture device is provided above the platform. The image capture device can capture the image of the panel to identify the position of the panel. The platform A pick-and-place device is provided on one side of the platform. When the image capture of the plate is completed, the pick-and-place device can be used to take out the plate placed on the bearing surface of the platform.

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