CN219978116U - Automatic visual detection device for liquid crystal substrate - Google Patents

Abstract

The utility model relates to an automatic visual detection device of liquid crystal substrate, including longmen sharp module unit and visual detection unit, longmen sharp module unit includes two parallel interval setting's horizontal sharp modules and can be followed the horizontal slip ground and connect two vertical sharp module between the horizontal sharp module, visual detection unit can be followed vertical slip ground and be connected to on the vertical sharp module. The automatic visual detection device for the liquid crystal substrate has a simple and compact structure, does not occupy space and can be compatible with the accurate detection of the large-size liquid crystal substrate.

Description

Automatic visual detection device for liquid crystal substrate

Technical Field

The present disclosure relates to the field of liquid crystal panel detection, and in particular, to an automatic visual detection device for a liquid crystal substrate.

Background

With the increasing production requirements of liquid crystal devices, the requirements for detecting defects of liquid crystal panels are also increasing. At present, in the field of liquid crystal panel detection, machine vision is gradually used for replacing human eyes to detect and judge, however, the existing machine vision detection is a detection camera, and the detection camera cannot be accurately positioned and focused, so that the detection accuracy is low, the flexibility is poor, and the high-precision detection of a large-scale liquid crystal panel cannot be met.

Disclosure of Invention

The utility model aims at providing an automatic visual detection device of liquid crystal substrate, simple structure is compact does not occupy the space and can compatible large-scale liquid crystal substrate's accurate detection.

In order to achieve the above object, the present disclosure provides an automatic visual inspection device for a liquid crystal substrate, including a gantry linear module unit and a visual inspection unit, the gantry linear module unit includes two parallel spaced transverse linear modules and a longitudinal linear module capable of being connected between the two transverse linear modules in a sliding manner, and the visual inspection unit is capable of being connected to the longitudinal linear module in a sliding manner in a longitudinal direction.

Optionally, the visual inspection unit includes an inspection camera assembly and a mount slidably connected to the longitudinal linear module in a longitudinal direction, the inspection camera assembly includes an inspection camera assembly and a lifting mechanism connected to each other, and the lifting mechanism is fixed to the mount and is capable of driving the inspection camera assembly to move in an up-down direction.

Optionally, the detection camera assembly includes detection camera and camera mount, the camera mount includes fixed riser and U-shaped splint, the U-shaped splint include with fixed riser parallel arrangement's base plate and symmetrical arrangement are in the second curb plate of base plate both sides, detection camera detachably is fixed to the base plate, two second curb plates towards the one end tip of fixed riser turns over the board that forms turns over in order to install to fixed riser, fixed riser is installed elevating system.

Optionally, the mounting base is configured as an L-shape opening towards the upper surface of the longitudinal linear module and comprises a first mounting plate and a second mounting plate extending vertically downwards, the first mounting plate being longitudinally slidingly connected to the upper surface of the longitudinal linear module, the lifting mechanism being connected to the second mounting plate.

Optionally, the visual detection unit further comprises a laser focusing assembly comprising a laser sensor and a sensor mount, the sensor mount being fixed to the mount.

Optionally, the sensor fixing frame is configured in a Z shape and comprises two upper connecting plates, a lower connecting plate and a vertical plate, wherein the upper connecting plates and the lower connecting plates are arranged along an upper-lower parallel interval, the vertical plate is connected between the upper connecting plates and the lower connecting plates, the laser sensor is mounted on the lower connecting plates, and the upper connecting plates are fixed on the mounting seats.

Optionally, the longitudinal linear module is located above two transverse linear modules, the longitudinal linear module is connected with the two transverse linear modules through a bracket, and the bracket can be connected to the transverse linear modules in a sliding manner along the transverse direction.

Optionally, the support includes the U-shaped overhead and sets up two reverse T shape framves at U-shaped overhead both ends, the U-shaped overhead includes mainboard and sets up the first curb plate in this mainboard both sides perpendicularly, vertical sharp module sets up the top of U-shaped overhead, reverse T shape frame include with the bottom plate that horizontal sharp module is connected with connect the bottom plate with backup pad between the first curb plate.

Optionally, the end of each transverse linear module is provided with a transverse driving motor, and the transverse linear module is configured as a transverse screw mechanism, the transverse screw mechanism comprises a transverse screw in transmission connection with the transverse driving motor and a transverse sliding block arranged on the transverse screw, and two ends of the longitudinal linear module are connected to the transverse sliding block; likewise, the end of the longitudinal linear module is provided with a longitudinal driving motor, and the longitudinal linear module is configured as a longitudinal screw mechanism, and the longitudinal screw mechanism comprises a longitudinal screw rod in transmission connection with the longitudinal driving motor and a longitudinal sliding block arranged on the longitudinal screw rod.

Optionally, the two transverse driving motors are symmetrically arranged in opposite directions; the longitudinal driving motor is arranged below the longitudinal linear module.

The beneficial effects of this technical scheme are: firstly, the linear module of the gantry structure is designed, so that the whole device has a simple and compact structure and higher stability, and the detection of a large-size liquid crystal substrate is realized by reasonably utilizing a smaller space; and secondly, automatic opposite side positioning can be realized, repeated positioning accuracy is improved, automatic focusing detection is completed, and the whole process is convenient to operate and has higher safety.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of an automatic visual inspection device for a liquid crystal substrate according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a visual inspection unit provided in an embodiment of the present disclosure.

Description of the reference numerals

1-a gantry linear module unit, 11-a transverse linear module and 111-a transverse screw rod; 112-transverse sliding blocks, 12-longitudinal linear modules, 121-longitudinal lead screws, 122-longitudinal sliding blocks, 13-brackets, 131-U-shaped elevated frames, 1311-main boards, 1312-first side boards, 132-inverted T-shaped frames, 1321-bottom boards, 1322-supporting boards, 14-transverse driving motors, 15-longitudinal driving motors, 2-visual detection units, 21-mounting seats, 211-first mounting boards, 212-second mounting boards, 22-detection camera assemblies, 221-detection cameras, 222-camera fixing frames, 2221-fixed vertical boards, 2222-base boards, 2223-second side boards, 2224-turning boards, 23-lifting mechanisms, 24-laser focusing assemblies, 241-laser sensors, 242-sensor fixing frames, 2421-upper connecting boards, 2422-lower connecting boards, 2423-vertical boards, 2424-fixed boards, 3-first reinforcing boards, 4-second reinforcing boards, 5-liquid crystal base boards.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "upper and lower" are used to refer generally to the Z-direction shown by the arrow in FIG. 2, and "transverse and longitudinal" refer to the X-direction and Y-direction, respectively, in FIG. 1; furthermore, the terms "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not for sequential or importance. The foregoing definitions are provided for the purpose of illustrating and explaining the present disclosure and should not be construed as limiting the present disclosure.

According to the specific embodiment of the disclosure, referring to fig. 1, there is provided an automatic visual inspection device for a liquid crystal substrate, which includes a gantry linear module unit 1 and a visual inspection unit 2, wherein the gantry linear module unit 1 includes two parallel and spaced transverse linear modules 11 and a longitudinal linear module 12 slidably connected between the two transverse linear modules 11 in a transverse direction, and the visual inspection unit 2 is slidably connected to the longitudinal linear module 12 in a longitudinal direction.

Specifically, referring to fig. 1, the liquid crystal substrate 5 is disposed within the gantry linear module unit 1, wherein the gantry linear module unit 1 has both the function of position adjustment and stable support in the X-direction and the Y-direction of the vision detecting unit 2. Firstly, the visual detection unit 2 is driven to move to an accurate coordinate position through the transverse linear module 11 and the longitudinal linear module 12 so as to realize accurate positioning, and then the visual detection unit 2 is used for automatically focusing and shooting to detect defects of the liquid crystal substrate 5. Through the technical scheme, on one hand, the linear module of the gantry structure is designed, so that the whole device is simple and compact in structure and has high stability, and detection of a large-size liquid crystal substrate is realized by reasonably utilizing a small space; on the other hand, automatic opposite side positioning can be realized, repeated positioning accuracy is improved, automatic focusing detection is completed, and the whole process is convenient to operate and has higher safety.

In order to enable the position adjustment of the visual inspection unit 2 in the Z direction to further secure the positioning and inspection accuracy for the liquid crystal panel, referring to fig. 2, in a specific embodiment of the present disclosure, the visual inspection unit 2 includes an inspection camera assembly including an inspection camera assembly 22 and a lifting mechanism 23 connected to each other, and a mount 21 slidably connected to the longitudinal linear module 12 in a longitudinal direction, and the lifting mechanism 23 is fixed to the mount 21 and is capable of driving the inspection camera assembly 22 to move in an up-down direction.

In order to enable stable adjustment of the inspection camera, referring to fig. 2, in the embodiment of the present disclosure, the inspection camera assembly 22 includes an inspection camera 221 and a camera fixing frame 222, the camera fixing frame 222 includes a fixing riser 2221 and a U-shaped clamping plate, the U-shaped clamping plate includes a base plate 2222 disposed in parallel with the fixing riser 2221 and second side plates 2223 symmetrically disposed at both sides of the base plate 2222, the inspection camera 221 is detachably fixed to the base plate 2222, and both of the second side plates 2223 are folded toward one end of the fixing riser 2221 to form a flap 2224 to be mounted to the fixing riser 2221, and the fixing riser 2221 is mounted to the elevating mechanism 23.

Through adopting the cooperation of U-shaped splint and fixed riser 2221, realized the surrounding fixed to detecting camera 221, avoid detecting camera 221 to take place the skew, fixed riser 2221 has increased the area of being connected with elevating system 23 simultaneously, guarantees that elevating system 23 can stably drive the removal of detecting camera 221 along the upper and lower direction, finally improves detection precision.

In addition, in the embodiment of the present disclosure, the U-shaped clamping plates may be provided in two arranged one above the other to further secure stable connection of the detection camera 221. The detection camera 221, the U-shaped clamping plate and the fixed vertical plate 2221 are all connected in a detachable manner, and optionally, in a bolt fastening manner, the disassembly and maintenance are convenient.

It should be noted that, the lifting mechanism 23 may be of any suitable configuration, and in the embodiment of the disclosure, the lifting mechanism 23 may be a ball screw mechanism, and the nut slider drives the whole detection camera assembly 22 to move stably and accurately.

In the embodiment of the present disclosure, referring to fig. 1 and 2, the mounting base 21 is constructed in an L shape opened toward the upper surface of the longitudinal straight module 12, and includes a first mounting plate 211 and a second mounting plate 212 extending vertically downward, the first mounting plate 211 is longitudinally slidably coupled to the upper surface of the longitudinal straight module 12, and the elevating mechanism 23 is coupled to the second mounting plate 212, and in addition, in order to secure the overall structural strength of the mounting base 21 and the stability of the moving process, a second reinforcing plate 4 is provided inside the first and second mounting plates 211 and 212.

Further, in the embodiment of the present disclosure, the visual inspection unit 2 further includes a laser focusing assembly 24, and the laser focusing assembly 24 includes a laser sensor 241 and a sensor fixing frame 242, and the sensor fixing frame 242 is fixed to the mounting base 21.

Referring to fig. 1 and 2, the operation process of the automatic visual inspection device for liquid crystal substrate of the present disclosure is: after the liquid crystal substrate 5 enters the detection space set in the gantry linear module unit 1, the detection camera 221 is moved to a preliminarily positioned coordinate position through the transverse linear module 11 and the longitudinal linear module 12, then the compensation displacement of the clear image is obtained through the laser sensor 241, the detection camera 221 is controlled to move a certain compensation distance to automatically opposite sides so as to obtain the clear image, finally the Z-direction position of the detection camera 221 is adjusted through the lifting mechanism, the detection visual field of the detection camera 221 is adjusted to an optimal state, and the automatic focusing function is realized. The gantry linear module unit 1 can act according to a program, and the liquid crystal substrate is comprehensively detected from an origin; the method can also automatically search preset coordinates according to a program for the product information of the product to be detected to perform local detection, and the method is not limited.

In order to ensure that the center of the laser sensor 241 and the center of the inspection camera 221 are located on the same vertical plane, in the embodiment of the present disclosure, the sensor holder 242 is configured in a Z shape and includes two upper connection plates 2421 and lower connection plates 2422 disposed at intervals in parallel up and down, and a riser 2423 connected between the upper connection plates 2421 and the lower connection plates 2422, the laser sensor 241 is mounted to the lower connection plates 2422, and the upper connection plates 2421 are fixed to the mounting seat 21. In addition, referring to fig. 2, in order to facilitate installation and enhance connection stability, the upper connection plate 2421 is further provided with a fixing plate 2424 to form a T shape, so as to increase a connection area, and ensure stable installation of the laser sensor 241 without deviation.

Referring to fig. 1, in order to avoid mounting interference with the apparatus for fixing the liquid crystal substrate 5, in a specific embodiment of the present disclosure, the longitudinal linear module 12 is located above two of the transverse linear modules 11, the longitudinal linear module 12 and the two of the transverse linear modules 11 are connected by a bracket 13, and the bracket 13 is slidably connected to the transverse linear modules 11 in a transverse direction. That is, the longitudinal straight modules 12 are elevated by the brackets 13 to provide a certain installation space for other devices.

In order to stably support the longitudinal straight line module 12, in the embodiment of the present disclosure, referring to fig. 2, the bracket 13 includes a U-shaped elevation 131 and two inverted T-shaped brackets 132 provided at both ends of the U-shaped elevation 131, the U-shaped elevation 131 includes a main plate 1311 and first side plates 1312 vertically provided at both sides of the main plate 1311, the longitudinal straight line module 12 is provided above the U-shaped elevation 131, and the inverted T-shaped brackets 132 include a bottom plate 1321 connected with the transverse straight line module 11 and a support plate 1322 connected between the bottom plate 1321 and the first side plates 1312.

Thus, on the one hand, the U-shaped overhead 131 provides a large support area, and on the other hand, the inverted T-shaped overhead 132 is responsible for support and attachment. The upper and lower connecting surfaces of the whole bracket 13 are larger to improve stability, and the purpose of stably lifting the longitudinal linear module 12 is realized. Meanwhile, referring to fig. 1, a first reinforcing plate 3 is further provided at the inner side between the U-shaped elevated frame 131 and the inverted T-shaped frame 132 to further improve the support stability.

Alternatively, in the specific embodiment of the present disclosure, the end of each of the lateral linear modules 11 is provided with a lateral driving motor 14, and the lateral linear module 11 is configured as a lateral screw mechanism including a lateral screw 111 drivingly connected to the lateral driving motor 14 and a lateral slider 112 provided on the lateral screw 111, and both ends of the longitudinal linear module 12 are connected to the lateral slider 112; likewise, the end of the longitudinal linear module 12 is provided with a longitudinal drive motor 15, and the longitudinal linear module 12 is configured as a longitudinal spindle mechanism comprising a longitudinal spindle 121 in driving connection with the longitudinal drive motor 15 and a longitudinal slide 122 arranged on the longitudinal spindle 121. In other embodiments, a synchronous belt transmission mode may be adopted, and the driving motor may be a servo motor with higher position accuracy, which is not limited in this disclosure.

In order to further rationally utilize the effective space, in the embodiment of the present disclosure, referring to fig. 1, two of the transverse driving motors 14 are symmetrically disposed in opposition; the longitudinal driving motor 15 is disposed below the longitudinal linear module 12, so that the whole structure is compact and space-saving.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. The automatic visual detection device for the liquid crystal substrate is characterized by comprising a gantry linear module unit (1) and a visual detection unit (2), wherein the gantry linear module unit (1) comprises two parallel linear modules (11) which are arranged at intervals and a longitudinal linear module (12) which can be connected between the two transverse linear modules (11) in a sliding manner along the transverse direction, and the visual detection unit (2) can be connected onto the longitudinal linear module (12) in a sliding manner along the longitudinal direction.

2. The automatic visual inspection device for liquid crystal substrates according to claim 1, characterized in that the visual inspection unit (2) comprises an inspection camera assembly and a mounting base (21) slidingly connected to the longitudinal linear module (12) in a longitudinal direction, the inspection camera assembly comprises an inspection camera assembly (22) and a lifting mechanism (23) which are connected to each other, and the lifting mechanism (23) is fixed to the mounting base (21) and can drive the inspection camera assembly (22) to move in an up-down direction.

3. The automatic vision inspection device for a liquid crystal substrate according to claim 2, wherein the inspection camera assembly (22) includes an inspection camera (221) and a camera fixing frame (222), the camera fixing frame (222) includes a fixing vertical plate (2221) and a U-shaped clamping plate, the U-shaped clamping plate includes a substrate (2222) disposed in parallel with the fixing vertical plate (2221) and second side plates (2223) symmetrically disposed at both sides of the substrate (2222), the inspection camera (221) is detachably fixed to the substrate (2222), and two second side plates (2223) are folded toward one end of the fixing vertical plate (2221) to form a flap (2224) to be mounted to the fixing vertical plate (2221), and the fixing vertical plate (2221) is mounted to the lifting mechanism (23).

4. The automatic vision inspection device for a liquid crystal substrate according to claim 2, characterized in that the mounting base (21) is configured in an L shape opening toward an upper surface of the longitudinal straight line module (12) and includes a first mounting plate (211) and a second mounting plate (212) extending vertically downward, the first mounting plate (211) being longitudinally slidably connected to the upper surface of the longitudinal straight line module (12), the elevating mechanism (23) being connected to the second mounting plate (212).

5. The automatic visual inspection device of a liquid crystal substrate according to claim 2, wherein the visual inspection unit (2) further comprises a laser focusing assembly (24), the laser focusing assembly (24) comprising a laser sensor (241) and a sensor mount (242), the sensor mount (242) being fixed to the mount (21).

6. The automatic vision inspection device for a liquid crystal substrate according to claim 5, characterized in that the sensor holder (242) is constructed in a Z shape and includes two upper connection plates (2421) disposed in parallel and spaced up and down, a lower connection plate (2422), and a riser plate (2423) connected between the upper connection plates (2421) and the lower connection plates (2422), the laser sensor (241) is mounted to the lower connection plate (2422), and the upper connection plates (2421) are fixed to the mounting seat (21).

7. The automatic visual inspection device for liquid crystal substrates according to claim 1, characterized in that the longitudinal linear module (12) is located above two of the transverse linear modules (11), the longitudinal linear module (12) and the two transverse linear modules (11) are connected by a bracket (13), and the bracket (13) is connected to the transverse linear modules (11) in a manner of sliding along the transverse direction.

8. The automatic visual inspection device for a liquid crystal substrate according to claim 7, wherein the bracket (13) comprises a U-shaped overhead frame (131) and two inverted T-shaped frames (132) arranged at two ends of the U-shaped overhead frame (131), the U-shaped overhead frame (131) comprises a main board (1311) and first side boards (1312) vertically arranged at two sides of the main board (1311), the longitudinal linear module (12) is arranged above the U-shaped overhead frame (131), and the inverted T-shaped frames (132) comprise a bottom board (1321) connected with the transverse linear module (11) and a supporting board (1322) connected between the bottom board (1321) and the first side boards (1312).

9. The automatic visual inspection device for liquid crystal substrates according to claim 1, characterized in that an end portion of each of the lateral linear modules (11) is provided with a lateral driving motor (14), and the lateral linear modules (11) are configured as a lateral screw mechanism including a lateral screw (111) drivingly connected to the lateral driving motor (14) and a lateral slider (112) provided on the lateral screw (111), both ends of the longitudinal linear module (12) being connected to the lateral slider (112); likewise, the end of the longitudinal linear module (12) is provided with a longitudinal drive motor (15), and the longitudinal linear module (12) is configured as a longitudinal spindle mechanism comprising a longitudinal spindle (121) in driving connection with the longitudinal drive motor (15) and a longitudinal slide (122) arranged on the longitudinal spindle (121).

10. The automatic visual inspection device of a liquid crystal substrate according to claim 9, characterized in that two of the lateral drive motors (14) are symmetrically disposed in opposition; the longitudinal driving motor (15) is arranged below the longitudinal linear module (12).