CN218034932U

CN218034932U - Flatness detection device

Info

Publication number: CN218034932U
Application number: CN202222234258.0U
Authority: CN
Inventors: 伍尚幸
Original assignee: LG Display Optoelectronics Technology China Co Ltd
Current assignee: LG Display Optoelectronics Technology China Co Ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-12-13
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a flatness detection equipment for detect display panel, including conveyor components and determine module. The display panel can move from one section of the conveying belt to the conveying roller and can also move from the conveying roller to the other section of the conveying belt. The detection assembly comprises a detection platform and a detection camera, a through hole is formed in the detection platform, the conveying roller is arranged in the through hole and can protrude out of the upper surface of the detection platform, the upper surface is horizontally arranged, the detection platform can move upwards to abut against the display panel, and the display panel is jacked to a detection position, so that the detection camera can avoid the conveying assembly and take pictures of the display panel at the detection position. The arrangement of the detection platform can reduce sundries in the shot images, and meanwhile, the display panel can be stably placed on a horizontal plane, so that the detection precision is effectively improved.

Description

Flatness detection device

Technical Field

The utility model relates to a display panel detects technical field, especially relates to a flatness detection equipment.

Background

The flatness detection of the display panel requires that the display panel is moved to a specified position through a conveying device, then an image of the display panel is obtained through a detection camera, and the image is analyzed and processed to judge whether the flatness of the display panel meets the standard or not. In order to avoid when shooing the side of display panel, display panel and rather than the conveyor of butt all exist in the image to increase image analysis's the degree of difficulty, prior art utilizes the air supporting platform to make display panel suspend to predetermineeing inclination, and the detection camera acquires the image with the display panel of predetermineeing inclination suspension, and rethread control system carries out the analysis to the image, in order to know whether display panel's plane degree accords with the standard. However, the prior art has the following defects: when the display panel is suspended by the air floating platform, the suspension angle of the display panel is very easily influenced by the air flow of the air floating platform, and the suspension angle of the display panel is possibly changed during photographing detection, so that the flatness judgment result of the display panel is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: provided is a flatness detection device capable of improving the detection accuracy of the flatness of a display panel.

In order to achieve the purpose, the utility model adopts the following technical proposal:

there is provided a flatness detecting apparatus for detecting a display panel, including:

the conveying assembly comprises a conveying belt and a conveying roller, the conveying belt is provided with two sections, the two sections of conveying belt are respectively arranged on two sides of the conveying roller along the conveying direction of the conveying assembly, and the display panel can move from one section of conveying belt to the conveying roller and also can move from the conveying roller to the other section of conveying belt;

the detection assembly comprises a detection platform and a detection camera, wherein a through hole is formed in the detection platform, the conveying roller is arranged in the through hole and can protrude out of the upper surface of the detection platform, the upper surface is horizontally arranged, the detection platform can move upwards to abut against the display panel and lift the display panel to a detection position, and the detection camera can avoid the conveying assembly from being positioned at the detection position and take pictures on the display panel.

As a preferable scheme of the flatness detection apparatus, the detection camera includes a first detection camera, and the first detection camera is disposed above the detection platform.

As an optimal scheme of the flatness detection device, the detection camera further comprises a second detection camera and a third detection camera, and the second detection camera and the third detection camera are perpendicular to the conveying direction and are respectively arranged on two sides of the detection platform.

As a preferable mode of the flatness detection apparatus, the second detection camera and the third detection camera are movable perpendicularly to the conveying direction.

As a preferable aspect of the flatness detecting apparatus, the second detecting camera and the third detecting camera are movable in the conveying direction.

As a preferred scheme of the flatness detection equipment, the flatness detection equipment further comprises two groups of alignment assemblies, one group of alignment assemblies comprises two alignment pieces which are arranged oppositely along the conveying direction and can move along the conveying direction, and the other group of alignment assemblies comprises two alignment pieces which are arranged oppositely perpendicular to the conveying direction and can move perpendicular to the conveying direction.

As a preferred scheme of the flatness detection device, the conveying assembly further comprises a driving part, and the driving part is used for driving the conveying roller to rotate.

As a preferable scheme of the flatness detection equipment, a plurality of conveying rollers are arranged and are in transmission connection through a transmission belt, and the driving piece is connected with one conveying roller.

As an optimal scheme of the flatness detection equipment, the detection assembly further comprises a jacking cylinder, and the output end of the jacking cylinder is connected to the lower surface of the detection platform.

As a preferable scheme of the flatness detection equipment, the width of the through hole is a, the diameter of the conveying roller is b, and a is larger than or equal to b.

The utility model has the advantages that: through set up the perforating hole on testing platform, make and carry the roller to be located the perforating hole to make testing platform can carry the roller relatively and reciprocate, can jacking to the detection position with display panel, and shoot display panel with the detection camera, and after the completion of shooing, still can put back the display panel and carry on the roller. The display panel is jacked to the detection position by the detection platform to take a picture, so that the conveying assembly is prevented from being in the shot image, and the difficulty of image processing is increased. Meanwhile, the upper surface of the detection platform is a horizontal plane, the detection platform is easier to guarantee than the levelness of the conveying roller, and the influence on the detection result caused by the fact that the display panel is not horizontally placed on the conveying roller can be avoided. In addition, the detection platform is easier to ensure than the air floatation platform in the process of jacking the display panel to move, and the display panel can be prevented from shaking in the shooting process to influence the detection result.

Drawings

The present invention will be described in further detail with reference to the drawings and examples.

Fig. 1 is a schematic view of a partial structure of a flatness detection apparatus according to an embodiment of the present invention;

fig. 2 is a partial cross-sectional view of the flatness detecting apparatus according to the embodiment of the present invention (the detecting platform is not lifted up the display panel);

fig. 3 is a partial cross-sectional view of the flatness detecting apparatus (detection platform jacking display panel) according to the embodiment of the present invention.

In fig. 1 to 3:

1. a conveyor belt; 2. a conveying roller; 21. a transmission belt; 3. a detection platform; 31. a through hole; 32. connecting holes; 4. a first detection camera; 5. a second detection camera; 6. a third detection camera; 7. jacking a cylinder; 8. a positioning piece; 9. a drive member; 10. a display panel.

Detailed Description

The advantages and features of the present invention and the methods of accomplishing the same will become apparent with reference to the following detailed description of the embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and the embodiments are provided only to accomplish the disclosure of the present invention and to enable those skilled in the art to sufficiently understand the scope of the present invention, and the present invention is limited only by the scope of the claims. Like reference numerals denote like constituent elements throughout the specification.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the utility model discloses flatness detection equipment of embodiment includes conveyor components and determine module, and wherein conveyor components includes conveyer belt 1 and transport roller 2, and conveyer belt 1 cooperatees with transport roller 2 for when carrying out the flatness detection to display panel 10, can make display panel 10 remove to the detection position of preparation on carrying roller 2 earlier, and after the detection is accomplished, then can remove display panel 10 from the detection position of preparation to conveyer belt 1 again, so that display panel 10 gets into subsequent procedure. Specifically, as shown in fig. 1, in this embodiment, the conveyor belt 1 is provided with two sections, the two sections of conveyor belts 1 are respectively disposed on two sides of the conveyor roller 2 along the conveying direction of the conveying assembly, and the display panel 10 can be moved from the conveyor belt 1 on the left side to the conveyor roller 2 in the middle, and after the detection is completed, then moved from the conveyor roller 2 to the conveyor belt 1 on the right side.

The detection assembly comprises a detection platform 3 and a detection camera, wherein the detection platform 3 is used for jacking the display panel 10 at the detection preparation position to the detection position so as to enable the detection camera to photograph the display panel 10. Specifically, as shown in fig. 2 and fig. 3, the display panel 10 is located above the conveying roller 2, the detection platform 3 is located below the display panel 10, the detection platform 3 is provided with a through hole 31, and the conveying roller 2 is disposed in the through hole 31. When the detecting platform 3 moves upwards to exceed the highest position of the conveying roller 2, the detecting platform 3 can lift the display panel 10 to leave the conveying roller 2, and when the detecting platform 3 moves downwards to be lower than the highest position of the conveying roller 2, the display panel 10 can be stopped on the conveying roller 2. It can be known that when the display panel 10 moves from the conveyer belt 1 to the conveyer roller 2 and is at the detection preparation position, the detection platform 3 can move upwards to further move the display panel 10 to the detection position. After the photographing detection is finished, the detection platform 3 can be moved downwards, so that the display panel 10 is moved to a detection preparation position, and then the conveying roller 2 is used for moving the display panel 10 back to the conveying belt 1, so as to reciprocate.

Optionally, testing platform 3 is the flat structure unanimous with display panel 10 shape, utilizes testing platform 3 to carry out the jacking to display panel 10 and can guarantee that display panel 10 keeps steady at the removal in-process, avoids display panel 10 to take place to rock at the in-process of shooing to influence the plane degree testing result. Meanwhile, the upper surface of the detection platform 3 is a horizontal plane, so that the display panel 10 placed on the detection platform 3 is photographed, compared with the method that the display panel 10 is directly placed on the conveying roller 2 to be photographed, not only can the image photographed by the detection camera be cleaner, but also the related parts on the conveying assembly can be shielded and only the image of the display panel 10 is reserved, meanwhile, the influence on the position of the display panel 10 due to the fact that a plurality of rollers for conveying the roller 2 are not located on the same horizontal plane can be avoided, the difficulty of subsequent image processing is reduced, and meanwhile, the detection precision can also be improved.

Alternatively, the width of the through hole 31 is a, the diameter of the conveying roller 2 is b, and a is larger than or equal to b. That is, the vertical movement distance of the detection platform 3 is not limited by the conveying roller 2, and the conveying roller 2 can be disassembled and assembled from the upper part or the lower part of the detection platform 3.

Optionally, the conveying assembly further comprises a driving member 9, and the driving member 9 is used for driving the conveying roller 2 to rotate. In this embodiment, the conveyor roller 2 rotates clockwise, that is, the display panel 10 moves from the left conveyor belt 1 to the conveyor roller 2, and moves to the right conveyor belt 1 after the detection is completed. In another embodiment, the conveyor roller 2 can also be rotated counterclockwise, i.e. the display panel 10 is moved from the right conveyor belt 1 to the conveyor roller 2 and then moved to the left conveyor belt 1 after the detection. The direction of rotation of the delivery drum 2 can be varied according to practical requirements. Optionally, the driving member 9 includes a driving portion and a driven portion, the driven portion is located inside the conveying roller 2 and is relatively fixed to the conveying roller 2, the driving portion is located below the detecting platform 3, and the driving portion can drive the driven portion to rotate so as to drive the conveying roller 2. Preferably, the driving part and the driven part are in gear transmission.

Specifically, referring to fig. 1 and fig. 2, in the present embodiment, the conveying rollers 2 have a plurality of conveying rollers 2, and in order to make the plurality of conveying rollers 2 rotate at the same rotation speed, the plurality of conveying rollers 2 are in transmission connection through a transmission belt 21, and the driving member 9 is connected to one conveying roller 21. Optionally, a connecting hole 32 is further provided on the detection platform 3, the connecting hole 32 extends along the conveying direction of the conveying assembly and sequentially penetrates through the plurality of through holes 31, and the transmission belt 21 is in transmission connection with the plurality of conveying rollers 2 and can penetrate through the detection platform 3 through the connecting hole 32 when the detection platform 3 moves. Alternatively, two connecting holes 32 are provided, and two transmission belts 21 are provided at intervals in the axial direction of the conveying roller 21.

In addition, in the embodiment, the detection camera includes a first detection camera 4, as shown in fig. 2, the first detection camera 4 is disposed above the detection platform 3, and can capture a top view of the display panel 10. It can be known that, the display panel 10 has a rectangular structure, and the top view of the display panel 10 is also rectangular, and the first flatness of the display panel 10 can be obtained by comparing the real-time image captured by the first detection camera 4 with the first standard image.

The inspection camera further includes a second inspection camera 5 and a third inspection camera 6, as shown in fig. 1, the second inspection camera 5 and the third inspection camera 6 are respectively disposed at two sides of the inspection platform 3 perpendicular to the conveying direction, wherein the conveying direction is a direction in which the display panel 10 moves on the conveying assembly, and in this embodiment, the conveying direction is the X direction in fig. 1. That is, both the second inspection camera 5 and the third inspection camera 6 may be used to capture a side view of the display panel 10, a second flatness of the display panel 10 may be obtained by comparing a real-time image captured by the second inspection camera 5 with a second standard image, and a third flatness of the display panel 10 may be obtained by comparing a real-time image captured by the third inspection camera 6 with a third standard image. The flatness of the display panel 10 can be obtained by comprehensively calculating the first flatness, the second flatness and the third flatness, and the flatness detection accuracy of the display panel 10 can be effectively improved by detecting the display panel 10 by a plurality of detection cameras through photographing from a plurality of positions.

Alternatively, to ensure the flatness detection accuracy of the display panel 10 by the detection cameras, the second detection camera 5 and the third detection camera 6 can be moved perpendicular to the conveying direction. Due to the difference in the size of the display panels 10, when the display panels 10 are lifted to the inspection position, the distances between the different display panels 10 and the second inspection camera 5 and the third inspection camera 6 are different in the vertical conveying direction, but the distance between the inspection camera and the object to be inspected has an optimal value to ensure accurate image processing. When the specification of the display panel 10 to be tested changes, the positions of the second detection camera 5 and the third detection camera 6 can be adjusted so that the display panel 10 and the second detection camera 5 and the third detection camera 6 always keep a first preset distance in the vertical conveying direction, and the first preset distance is the optimal value.

Further alternatively, the second and third inspection cameras 5 and 6 can also be moved in the conveying direction of the display panel 10 to adjust the relative positions of the second and third inspection cameras 5 and 6 and the display panel 10 in the conveying direction. Similarly, in the vertical direction, the display panel 10 is always kept at the second preset distance from the second detection camera 5 and the third detection camera 6, and is always kept at the third preset distance from the first detection camera 4. In the vertical direction, the distance between the display panel 10 and the inspection camera varies depending on the height at which the inspection platform 3 is raised.

Optionally, as shown in fig. 2, the detection assembly further includes a jacking cylinder 7, an output end of the jacking cylinder 7 is connected to the lower surface of the detection platform 3, and an output end of the jacking cylinder 7 moves up and down to drive the detection platform 3 to move up and down. Jacking cylinder 7 is equipped with a plurality ofly, and a plurality of jacking cylinders 7 set up in testing platform 3's lower surface interval.

Further, in this embodiment, the flatness detecting apparatus further includes a positioning component, since the display panel 10 is moved to the detection preparation position by the transmission of the conveying roller 2, but the transmission precision of the conveying roller 2 is low, that is, if the display panel 10 is moved to the conveying roller 2 but is not in the detection preparation position, if the display panel 10 is lifted up to detect the display panel, the detection precision may be affected, and therefore, the position of the display panel 10 can be corrected by the positioning component to ensure that the display panel is already in the detection preparation position. Optionally, the alignment assemblies are provided in two sets, one set of alignment assemblies includes two alignment members 8 which are disposed oppositely along the conveying direction and can move along the conveying direction, and the other set of alignment assemblies includes two alignment members 8 which are disposed oppositely along the vertical conveying direction and can move vertically along the conveying direction, so as to ensure that the position of the display panel 10 can be adjusted from multiple directions. Alternatively, in correcting the position of the display panel 10, the four aligning members 8 may be sequentially moved to predetermined positions to abut against the four side surfaces of the display panel 10.

Optionally, the flatness detecting apparatus further includes a control assembly, and the conveying assembly and the detecting assembly are electrically connected to the control assembly. Each part of the controllable conveying assembly and the detection assembly of the control assembly are matched with each other, so that the automation degree of the flatness detection equipment is improved. That is, after the display panel 10 moves onto the conveying roller 2, the alignment assembly is controlled to correct the position of the display panel 10, so as to ensure that the display panel 10 is located at the detection preparation position. Then testing platform 3 rises, and testing platform 3 is with display panel 10 jacking to the testing position, adjusts each detection camera and display panel 10's distance to the optimal value, and the detection camera carries out diversified the shooing to display panel 10, and after shooing, testing platform 3 descends, and display panel 10 falls back to the detection and prepares the position, carries roller 2 at last and removes display panel 10 to next section conveyer belt 1 on, and the flatness of a display panel 10 detects the end.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but may be manufactured in various forms, and those skilled in the art will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the invention. It should therefore be understood that the above-described embodiments are illustrative in all respects and not restrictive.

Claims

1. A flatness detecting apparatus for detecting a display panel, comprising:

detection subassembly, including testing platform and detection camera, the last perforating hole that is provided with of testing platform, carry the roller set up in the perforating hole, and can salient in testing platform's upper surface, the upper surface level sets up, testing platform can the rebound butt display panel, and the jacking display panel to detection position, so that the detection camera can avoid conveying subassembly is to being located detection position display panel shoots.

2. The flatness detection apparatus according to claim 1, wherein the detection camera includes a first detection camera disposed above the detection platform.

3. The flatness detecting apparatus according to claim 2, wherein the detecting cameras further include a second detecting camera and a third detecting camera, the second detecting camera and the third detecting camera being respectively disposed at both sides of the detecting platform perpendicular to the conveying direction.

4. The flatness detection apparatus according to claim 3, wherein the second detection camera and the third detection camera are movable perpendicular to the conveying direction.

5. The flatness detecting apparatus according to claim 3, wherein the second detecting camera and the third detecting camera are movable in the conveying direction.

6. The flatness detecting apparatus according to claim 3, further comprising two sets of aligning members, one of the aligning members including two aligning members oppositely disposed along the conveying direction and movable along the conveying direction, and the other of the aligning members including two aligning members oppositely disposed perpendicular to the conveying direction and movable perpendicular to the conveying direction.

7. The flatness detecting apparatus according to any one of claims 1 to 5, wherein the conveying assembly further includes a driving member for driving the conveying roller to rotate.

8. The flatness detecting apparatus according to claim 7, wherein a plurality of the conveying rollers are provided, the plurality of conveying rollers are connected by a transmission belt, and the driving member is connected to one of the conveying rollers.

9. The flatness detecting apparatus according to any one of claims 1 to 5, wherein the detecting assembly further includes a jacking cylinder, an output end of the jacking cylinder being connected to a lower surface of the detecting platform.

10. The flatness detecting apparatus according to any one of claims 1 to 5, wherein the width of the through hole is a, the diameter of the conveying roller is b, and a ≧ b.