CN215003449U

CN215003449U - LOCA glue detection device

Info

Publication number: CN215003449U
Application number: CN202121199360.0U
Authority: CN
Inventors: 刁仁华; 陈克文; 刘翀
Original assignee: Suzhou Industrial Park Xinlong Electric Heating Instrument Co ltd
Current assignee: Suzhou Industrial Park Xinlong Electric Heating Instrument Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-03
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a LOCA glues detection device, include: the three-dimensional motion module comprises a left-right motion assembly, a front-back motion assembly and an up-down motion assembly; the visual camera is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction; the height measuring instrument is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction; the clamp is horizontally arranged below the vision camera and the altimeter and can be turned back and forth around an axis parallel to the left and right directions; and the computer is connected with the vision camera and the altimeter. With machine automated inspection LOCA glue film, have the rate of accuracy height, detect fast advantage.

Description

LOCA glue detection device

Technical Field

The utility model relates to a touch-sensitive screen detection area, in particular to LOCA glues detection device.

Background

Liquid Optical Clear Adhesive, also known as LOCA and known by the English name of Liquid Optical Clear Adhesive, is a special Adhesive mainly used for bonding transparent Optical elements. From the structure of the touch screen, the screen can be roughly divided into 3 parts, namely a protective layer, the touch screen and a display screen from top to bottom. The three parts are required to be attached, and can be divided into a full-attachment part and a frame-attachment part according to the attaching mode. The frame sticker is also called as a Chinese character 'kou' sticker, namely the touch screen and the four sides of the display screen are simply fixed by the double faced adhesive tape, and an air layer exists between the display screen and the touch screen. The full-lamination technology is to completely laminate the display screen and the touch screen together by optical glue without a gap.

For the touch screen pasted with the frame, the width and the thickness of the LOCA glue cannot exceed the tolerance required by a product, so that the LOCA glue of the touch screen needs to be detected one by one.

SUMMERY OF THE UTILITY MODEL

The utility model provides a LOCA glues detection device utilizes computer vision technique to detect LOCA and glues width and altimeter detection LOCA and glues thickness.

LOCA glues detection device includes:

the three-dimensional motion module comprises a left-right motion assembly, a front-back motion assembly and an up-down motion assembly;

the vision camera is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction respectively;

the height measuring instrument is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction respectively;

the clamp is horizontally arranged below the vision camera and the altimeter;

the test board is arranged below the clamp; and

and the computer is connected with the vision camera and the altimeter.

The beneficial effects of the embodiment are as follows: with machine automated inspection LOCA glue film, have the rate of accuracy height, detect fast advantage.

In some embodiments, the fixture includes a left frame strip, a right frame strip, a front frame strip and a rear frame strip, wherein the left frame strip is opposite to the right frame strip, the front frame strip is opposite to the rear frame strip, the front frame strip and the rear frame strip respectively connect the left frame strip and the right frame strip from two ends, a middle frame strip connecting the front frame strip and the rear frame strip is further disposed in the middle of the fixture, and vacuum suction nozzles are disposed on the front frame strip, the rear frame strip, the left frame strip, the right frame strip and the middle frame strip.

In some embodiments, the four corners of the upper surface of the fixture are provided with L-shaped positioning members, the four L-shaped positioning members define a rectangular area for placing the detection object, and the vacuum suction nozzles are all arranged in the rectangular area.

In some embodiments, two first supporting seats and two second supporting seats are arranged below the clamp, the four supporting seats are distributed at four corners of a rectangle, the front edge of the clamp is rotatably connected with the first supporting seat, and the rear edge of the clamp is lapped on the second supporting seat.

In some embodiments, the side of the second support seat is provided with a buffer.

In some embodiments, the two ends of the front edge of the fixture are provided with hinge seats, the hinge seats are hinged to the first support seat, a positioning block is fixed to the side face of one hinge seat, the positioning block can rotate around an axis along with the turning of the fixture, the positioning block is provided with a positioning hole with the central axis parallel to the left-right direction, the first support seat is provided with a positioning pin with the central axis parallel to the left-right direction, and the relative positions of the positioning hole and the positioning pin are configured to be exactly aligned with the positioning pin when the fixture is turned over to 45 °.

In some embodiments, a first plane alpha defined by the central line of the positioning hole and the axis and a second plane beta defined by the clamp form an angle of 45 degrees, and the plane defined by the central line of the positioning pin and the axis is a vertical plane.

In some embodiments, the first support seat comprises a first portion and a second portion arranged at intervals in the left-right direction; a shaft penetrates through the positioning block and the hinge seat connected with the positioning block along the left-right direction, and two ends of the shaft are connected with the first part and the second part through ball bearings respectively.

In some embodiments, a material placing plate is further arranged in front of the clamp, and the upper surface of the material placing plate is provided with an anti-static felt.

Drawings

Fig. 1 is a perspective view of the LOCA adhesive detection device according to an embodiment of the present invention.

Fig. 2 is a perspective view of a clamp of the LOCA adhesive detection device according to an embodiment of the present invention.

Fig. 3 is a top view of the fixture of fig. 2.

Fig. 4 is a right side view of the fixture of fig. 2.

Fig. 5 is a rear view of the clamp of fig. 2.

Description of the symbols:

the vision camera comprises a vision camera 1, a height indicator 2, a clamp 3, a test board 4, a left-right movement component 5, a front-back movement component 6, an up-down movement component 7, a left frame strip 8, a right frame strip 9, a front frame strip 10, a rear frame strip 11, a middle frame strip 12, a vacuum suction nozzle 13, an L-shaped positioning piece 14, a rectangular area 15, a first supporting seat 16, a second supporting seat 17, an axis 18, a hinged seat 19, a buffer 20, a positioning block 21, a positioning hole 22, a positioning pin 23, a first part 24, a second part 25, a shaft 26, a material placing plate 27 and a side groove 28

Detailed Description

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

When operating the device, the operator faces the device. For convenience of explanation, the direction toward the front of the operator is the front, the direction away from the operator is the rear, the left hand side of the operator is the left, and the right hand side of the operator is the right, with reference to the operator.

Referring to fig. 1, the LOCA adhesive detection apparatus includes a three-dimensional motion module, a vision camera 1, a height indicator 2, a fixture 3, and a test board 4. The vision camera 1 and the altimeter 2 are provided on the three-dimensional motion module, and are configured to be capable of moving left and right, back and forth, and up and down in spatial coordinates. For example, the three-dimensional motion module comprises a left-right motion assembly 5, a front-back motion assembly 6 and an up-down motion assembly 7, wherein the up-down motion assembly 7 is arranged on the left-right motion assembly 5, and the front-back motion assembly 7 is slidably arranged on the up-down motion assembly 6. Specifically, the left-right movement assembly 5 and the front-back movement assembly 6 are linear modules driven by a motor and a belt, and the up-down movement assembly 7 is a linear module driven by a servo motor and a precise screw rod. The left-right movement assembly 5 and the front-back movement assembly 6 mainly drive the vision camera 1 and the height indicator 2 to scan along the left-right direction and the front-back direction, and the scanning speed is high due to the belt transmission. The up-and-down movement assembly 7 is mainly used for adjusting the distance from the vision camera 1 to the touch screen, namely, the focus of the vision camera 1 is adjusted to just fall on the surface of the touch screen, the transmission precision of the precision lead screw is high, and the focusing is accurate. The vision camera 1 and the altimeter 2 are both arranged on the front and rear motion assembly 6. Under the drive of the three-dimensional motion module, the vision camera 1 and the altimeter 2 can move left and right, back and forth and lift.

The jig 3 is disposed below the vision camera 1 and the altimeter 2. The clamp 3 is used for bearing and fixing the display panel to be detected. Specifically, referring to fig. 2, the fixture 3 includes a left frame strip 8, a right frame strip 9, a front frame strip 10 and a rear frame strip 11, wherein the left frame strip 8 is opposite to the right frame strip 9, the front frame strip 10 is opposite to the rear frame strip 11, and the front frame strip 10 and the rear frame strip 11 connect the left frame strip 8 and the right frame strip 9 from two ends, respectively. In the middle of the clamp 3, a middle frame strip 12 connecting the front frame strip 10 and the rear frame strip 11 is further provided. A suitable number of vacuum nozzles 13 are arranged on the front frame strip 10, the rear frame strip 11, the left frame strip 8, the right frame strip 9 and the middle frame strip 12. The vacuum suction nozzle 13 functions to firmly attract the inspection object to the jig 3.

With continued reference to fig. 2, the four corners of the upper surface of the fixture 3 are provided with L-shaped positioning members 14, the four L-shaped positioning members 14 define a rectangular area 15 for placing the detection object, and the vacuum suction nozzles 13 are all arranged in the rectangular area 15.

With continued reference to fig. 2, two first supporting seats 16 and two second supporting seats 17 are disposed below the clamp 3, and the first supporting seats 16 and the second supporting seats 17 are used for supporting the clamp 3. Specifically, the four supporting seats are distributed at four corners of a rectangle, wherein the first supporting seat 16 is closer to the operator, and the second supporting seat 17 is farther from the operator.

The gripper 3 is arranged to be reversible. Specifically, referring to fig. 2, the jig 3 can be turned back and forth about an axis 18 parallel to the left-right direction as a rotation center. Hinge seats 19 are provided at both ends of the front edge of the clamp 3, the hinge seats 19 are hinge-jointed to the first support seat 16, and the rear edge of the clamp 3 is lapped on the second support seat 17, in which state the clamp 3 is kept horizontal. Specifically, a part of the hinge base 19 is fastened to the bottom of the clamp 3 by bolts, and another part of the hinge base 19 protrudes from the front edge of the clamp 3, and the protruding part is hinged to the first support base 16. Referring to fig. 5, a buffer 20 is disposed on the side of the two rear supporting seats, i.e., the second supporting seat 17. When the damper 20 is not subjected to a force, the upper end of the damper 20 is higher than the top end of the second support seat 17. When the clamp 3 is put down, the clamp 3 is firstly dropped on the buffer 20 and slowly rotated under the action of the buffer 20 until the rear edge of the clamp 3 is dropped on the second support seat 17.

Referring to fig. 2 and 3, a positioning block 21 is fixed to a side of one of the hinge seats 19, and the positioning block 21 can rotate around the axis 18 with the turning of the clamp 3. Referring to fig. 4, the positioning block 21 is provided with a positioning hole 22, and the first supporting seat 16 is provided with a positioning pin 23. When the jig 3 is turned over to 45 °, the positioning hole 22 is aligned with the positioning pin 23, and the positioning pin 23 is inserted into the positioning hole 22 by rotating the positioning pin 23, thereby holding the jig 3 in a state of being inclined at 45 °. Specifically, referring to fig. 2, the first supporting seat 16 includes a first portion 24 and a second portion 25 spaced apart from each other in the left-right direction; referring to fig. 4, a positioning block 21 is fixed to a side surface of a hinge base 19, a shaft 26 penetrates the hinge base 19 and the positioning block 21 in the left-right direction, and two ends of the shaft 26 are connected to the first portion 24 and the second portion 25 through ball bearings, respectively. The positioning block 21 is provided with a positioning hole 22, and a side surface of the first support base 16 is provided with a positioning pin 23, for example, the positioning pin 23 penetrates through the first portion 24 or the second portion 25. The central line of the positioning hole 22 and the central axis of the positioning pin 23 are both parallel to the left-right direction, and the positioning pin 23 is in threaded connection with the first support base 16. The relative positions of the positioning holes 22 and the positioning pins 23 are set such that when the jig 3 is turned 45 ° from horizontal, the positioning holes 22 are exactly aligned with the positioning pins 23. When the positioning pin 23 is rotated, the positioning pin 23 can enter the positioning hole 22, thereby locking the jig 3 at the 45 ° position. Further, referring to fig. 4, an angle of 45 ° is formed between a first plane α defined by a center line of the positioning hole 22 and the axis 18 and a second plane β defined by the fixture 3, and the positioning pin 23 is disposed right below the axis 18, that is, a plane defined by a central axis of the positioning pin 23 and the axis 18 is a vertical plane, so that a machining reference can be conveniently found when machining a corresponding component.

The other hinge seat 19 and the first support seat 16 are also connected by ball bearings, but the side of the other hinge seat 19 may not be provided with the positioning block 21.

Referring to fig. 2, the inner edges of the front frame strip 10, the rear frame strip 11, the left frame strip 8 and the right frame strip 9 are further respectively provided with a side groove 28, and each side groove 28 extends out of the rectangular area 15. After the detection is finished, the touch screen is convenient to take down through the side groove 28.

Referring to fig. 1, a plurality of touch screen test boards 4 are disposed under the jigs 3. During detection, the touch screen is electrically connected with the test board 4, and the touch screen is lightened so as to facilitate detection.

Referring to fig. 1, a material placing plate 27 is further disposed in front of the plate of the fixture 3, and an antistatic felt is disposed on the upper surface of the material placing plate 27. The material placing plate 27 is used for temporarily placing the touch screen.

The LOCA glue detection device of this embodiment still includes the computer, and vision camera 1 and altimeter 2 all are connected with the computer. Before detecting a batch of products, the height of the vision camera 1 is adjusted to enable the focus of the vision camera 1 to fall on the touch screen on the clamp 3, the reference distance from the height indicator 2 to the surface of the clamp 3 is measured through the height indicator 2, and meanwhile, the detection point positions of the vision camera 1 and the height indicator 2 are set in a computer. During the actual detection, the distances between the vision camera 1 and the height indicator 2 and the surface of the clamp 3 are kept unchanged, and only horizontal movement is performed. In operation, the touch screen is attached to the fixture 3 and attached to the test board 4, and then the fixture 3 is turned over by 45 ° and held. An operator visually observes the touch screen, and if the touch screen is observed to have obvious defects, the touch screen is directly judged to be unqualified, and subsequent detection is not performed; if the visual inspection is qualified, the clamp 3 is adjusted to be horizontal, the vision camera 1 is automatically controlled by the computer to move to a preset detection point position, the vision camera 1 shoots an image of the LOCA glue layer, and the height measuring instrument 2 detects the actual measurement distance from the LOCA glue layer to the touch screen. And the computer identifies the boundary of the LOCA glue layer by utilizing a computer vision technology, measures the width of the glue layer and judges whether the width of the LOCA glue layer exceeds a tolerance or not. And the computer calculates the thickness of the touch screen through the measured distance and the reference distance and judges whether the LOCA glue layer exceeds the tolerance range. The result of the determination is displayed on the screen of the computer.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

LOCA glues detection device, characterized in that includes:

the three-dimensional motion module comprises a left-right motion assembly, a front-back motion assembly and an up-down motion assembly;

the visual camera is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction respectively;

the height measuring instrument is arranged on the three-dimensional motion module and can move along the left-right direction, the front-back direction and the up-down direction respectively;

the clamp is horizontally arranged below the vision camera and the altimeter;

the test board is arranged below the clamp; and

and the computer is connected with the vision camera and the altimeter.
2. The LOCA adhesive detection device according to claim 1, wherein a vacuum suction nozzle is provided on said jig, said jig being arranged to be capable of being turned to an angle and held around an axis located at a front edge of said jig and parallel to a left-right direction.
3. The LOCA adhesive detection device according to claim 1 or 2, wherein the fixture comprises a left frame strip, a right frame strip, a front frame strip and a rear frame strip, wherein the left frame strip is opposite to the right frame strip, the front frame strip is opposite to the rear frame strip, the front frame strip and the rear frame strip are respectively connected with the left frame strip and the right frame strip from two ends, a middle frame strip for connecting the front frame strip and the rear frame strip is further arranged in the middle of the fixture, and vacuum suction nozzles are respectively arranged on the front frame strip, the rear frame strip, the left frame strip, the right frame strip and the middle frame strip.
4. The LOCA adhesive detection device according to claim 3, wherein four corners of the upper surface of said clamp are provided with L-shaped positioning members, said four L-shaped positioning members define a rectangular area for placing the detection object, and said vacuum suction nozzles are all arranged in said rectangular area.
5. The LOCA adhesive detection device according to claim 1 or 2, wherein two first supporting seats and two second supporting seats are arranged below the clamp, the four supporting seats are distributed at four corners of a rectangle, the front edge of the clamp is rotatably connected with the first supporting seat, and the rear edge of the clamp is lapped on the second supporting seat.
6. The LOCA adhesive detection device according to claim 5, wherein a buffer is arranged on the side surface of the second support seat.
7. The LOCA adhesive detection device according to claim 5, wherein hinged seats are arranged at two ends of the front edge of the clamp, the hinged seats are hinged to the first support seat, a positioning block is fixed to one side surface of one hinged seat, the positioning block can rotate around an axis along with the turning of the clamp, a positioning hole with a central axis parallel to the left-right direction is formed in the positioning block, a positioning pin with a central axis parallel to the left-right direction is formed in the first support seat, and the positioning hole and the positioning pin are arranged in a relative position so that when the clamp is turned over to 45 degrees, the positioning hole is just aligned with the positioning pin.
8. The LOCA adhesive detection device according to claim 7, wherein an angle of 45 ° is formed between a first plane α defined by a center line of the positioning hole and the axis and a second plane β defined by the clamp, and the plane defined by the central axis of the positioning pin and the axis is a vertical plane.
9. The LOCA adhesive detection device according to claim 7, wherein said first support seat comprises a first portion and a second portion arranged at an interval in a left-right direction; and a shaft penetrates through the positioning block and the hinge seat connected with the positioning block along the left-right direction, and two ends of the shaft are respectively connected with the first part and the second part through ball bearings.
10. The LOCA glue detection device according to claim 1, wherein a material placing plate is further arranged in front of the clamp, and an anti-static felt is arranged on the upper surface of the material placing plate.