CN111589659A

CN111589659A - Glue laminating device and glue laminating control method

Info

Publication number: CN111589659A
Application number: CN202010407175.XA
Authority: CN
Inventors: 郭向茹; 余龙江; 毛林山; 周忠伟; 常伟; 方荣虎
Original assignee: Skyworth LCD Shenzhen Co Ltd
Current assignee: Skyworth LCD Shenzhen Co Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-08-28
Anticipated expiration: 2040-05-14
Also published as: CN111589659B

Abstract

The invention relates to the technical field of touch screen display and discloses a glue laminating device and a glue laminating control method. The water gel laminating device comprises a driving base; the fixture is connected to the driving base, a product is placed on the fixture, and the driving base can drive the fixture to rotate so as to uniformly spread glue in a joint gap of the product; the vacuum suction nozzle is arranged on the clamp and is arranged around the periphery of the product, and the vacuum suction nozzle is used for positioning the product on the clamp and can adsorb the water adhesive overflowing from the joint gap. The glue laminating device is used for improving the spreading speed of the glue, reducing the probability of generating bubbles, avoiding manually wiping the glue overflowing from the edge and realizing the recovery of the glue.

Description

Glue laminating device and glue laminating control method

Technical Field

The invention relates to the technical field of touch screen display, in particular to a glue laminating device and a glue laminating control method.

Background

At present, almost all small and medium-sized displays and partial large-sized displays have a touch function, and the displays with the touch function can be of a built-in type and an external hanging type, wherein the built-in type is that the touch function is integrated in a liquid crystal display screen or an OLED display screen, and a glass cover plate needs to be attached to the outside of the display screen to play a role in protecting the display screen. The plug-in type touch control function is realized through a touch screen (TP), namely a transparent circuit is designed on the glass cover plate, and meanwhile, the display screen has no touch control function.

In either configuration, as shown in fig. 1 and 2, the display device needs to complete the bonding process (including bonding the display panel 1 'to the cover plate 2' 2 'or bonding the display panel 1' to the TP). At present, mainly utilize glue 3 'to realize the laminating, traditional glue 3' laminating technology is at display screen 1 'surface coating glue 3', generally coats two and is Y type glue 3 'on display screen 1', the afterbody of two Y type glue 3 'meets, later paste apron 2'/touch-sensitive screen on display screen 1 'according to certain mode to exert certain holding down force to apron 2'/TP, glue 3 'receives extrusion diffusion and evenly distributed between apron 2'/TP and display screen 1 ', with overall structure precuring, the deaeration, this solidification again, accomplish glue 3' laminating process.

This method has two disadvantages: 1. the natural flow of the water gel 3 'between the cover 2'/TP and the display panel may generate bubbles and a partial area flow non-uniformity phenomenon, and the natural flow speed is relatively slow. 2. The amount of the glue 3 ' is not easy to control, and in order to ensure that the glue 3 ' can be fully paved on a display area, the glue 3 ' generally overflows, an operator is required to clean the glue 3 ' at the edge by using a dust-free cloth, so that the waste of personnel and the glue 3 ' material is caused.

Disclosure of Invention

The invention aims to provide a glue laminating device which is used for improving the glue spreading speed, reducing the probability of bubble generation, avoiding the glue overflowing from the edge of manual wiping and realizing the recovery of the glue.

Another objective of the present invention is to provide a control method for controlling the operation of the glue applying device, so as to improve the glue applying process of the liquid crystal touch display screen and the OLED touch display screen, and improve the quality of the applied product.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a water glue laminating device includes: a drive base; the fixture is connected to the driving base, a product is placed on the fixture, and the driving base can drive the fixture to rotate so as to uniformly spread glue in a joint gap of the product; the vacuum suction nozzle is arranged on the clamp and is arranged around the periphery of the product, and the vacuum suction nozzle is used for positioning the product on the clamp and can adsorb the water adhesive overflowing from the joint gap.

Preferably, a vacuum cavity is arranged inside the clamp, and the vacuum suction nozzle is communicated with the vacuum cavity of the clamp.

Preferably, a vacuum pump connected to the vacuum chamber is further included.

Preferably, a barrier is arranged in the vacuum cavity and used for preventing the water gel from directly entering the vacuum pump.

Preferably, the vacuum nozzle is located at a fitting slit of the product, and an opening of the vacuum nozzle covers the fitting slit.

Preferably, the glue application device further comprises a stretchable joint, the vacuum suction nozzle is connected to the stretchable joint, the stretchable joint is connected to the clamp, and the stretchable joint can adjust the position of the vacuum suction nozzle along the central axial direction of the clamp.

Preferably, the glue applying device further comprises a UV light source, and the UV light source is used for pre-curing the glue uniformly spread in the applying gap of the product.

Preferably, the glue laminating device further comprises a pressing part which is arranged above the product and can be pressed against the product.

The invention also provides a water gel laminating control method, and the water gel laminating device comprises the following steps:

s1, driving the base to drive the clamp to rotate, and uniformly diffusing the water gel in the joint gap of the product to the outside under the action of centrifugal force;

and S2, adsorbing the water gel overflowing from the joint gap by using a vacuum suction nozzle.

Preferably, step S1 further includes: when the clamp starts to rotate, a vacuum pump of the water gel laminating device is opened, and the pressure in a vacuum cavity of the clamp is lower than the external pressure.

Preferably, while the steps S1 and S2 are performed, the method further includes a step S3: and (4) irradiating the uniformly tiled water gel in the bonding gap in the step S1 by using a UV light source of the water gel bonding device to pre-cure the water gel.

The invention has the beneficial effects that: the driving base of the glue attaching device drives the clamp to rotate, so that the glue in the attaching gap of a product on the clamp is uniformly spread to the periphery through centrifugal motion. This mode has replaced the original method of standing after the laminating and placing the automatic tiling of glue of treating, can increase the tiling speed of the glue in the laminating gap on the one hand, can make the more even of glue tiling, and on the other hand, because centrifugal action, the glue has stronger mobility, can promote the air in the glue and get rid of from the laminating gap, reduces the formation of glue bubble in the glue of spreading in-process.

The circumference of fitting with a contraceptive ring at anchor clamps and establishing the product sets up vacuum nozzle, because of vacuum nozzle to the absorption of product to the effect of pressing, after the product was placed on anchor clamps, vacuum nozzle guaranteed the product location on anchor clamps to fixed product, the rotatory in-process of anchor clamps, the product can not thrown away. The water gel permeating from the joint gap is absorbed by the vacuum suction nozzle, so that the water gel is recovered, and the manual wiping work is avoided.

Drawings

FIG. 1 is a front view of a prior art display;

FIG. 2 is a top view of a prior art display;

FIG. 3 is a schematic view of the construction of the glue applicator of the present invention and the product thereon;

fig. 4 is a schematic structural view of the glue application device of the present invention.

In fig. 1 to 2:

1', a display screen; 2', a cover plate; 3', water glue;

in fig. 3 to 4:

10. a display screen; 30. a cover plate;

1. a drive base; 11. a base; 12. a rotating shaft; 13. a support platform;

2. a clamp; 20. a vacuum chamber; 21. a barrier; 22. a stretchable joint; 23. a first clamp; 231. a first L-shaped plug part; 24. a second clamp; 241. a second L-shaped plug part;

3. a vacuum nozzle.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 3 and 4, the embodiment provides a water gel attaching device, which is mainly used in the field of touch display, including but not limited to a middle-sized, a small-sized, and a large-sized liquid crystal touch display screen, and an OLED touch display screen.

Above-mentioned glue laminating device includes drive base 1, anchor clamps 2 and vacuum suction nozzle 3, and wherein, anchor clamps 2 are connected in drive base 1, are used for placing the product on anchor clamps 2, and drive base 1 can drive anchor clamps 2 rotatory in order to evenly tile the glue in the laminating gap with the product. The vacuum suction nozzle 3 is arranged on the clamp 2 and is annularly arranged in the circumferential direction of the product, and the vacuum suction nozzle 3 is used for positioning the product on the clamp 2 and can adsorb excessive glue in the joint gap.

The product in this embodiment is the aligned cover plate 30 and the aligned display screen 10, or the aligned touch screen and the aligned display screen 10. And coating water gel between the cover plate 30 and the display screen 10 or between the touch screen and the display screen 10 to ensure that the touch screen and the display screen are jointed.

When the glue laminating device works, the cover plate 30 (or the touch screen) is laminated with the display screen 10 through glue and is placed on the clamp 2, the drive base 1 drives the clamp 2 to rotate, and the glue is uniformly diffused around under the centrifugal action. Due to the centrifugal effect, the glue has a strong flowing tendency, and air in the glue can be pushed to be discharged from a joint gap between the cover plate 30 (or the touch screen) and the display screen 10, so that bubbles generated between the cover plate 30 (or the touch screen) and the display screen 10 are reduced.

Set up vacuum nozzle 3 in the circumference of fitting with a contraceptive ring at anchor clamps and establishing the product, because of vacuum nozzle 3 supports the pressure effect to the absorption of product, after the product was placed on anchor clamps 2, vacuum nozzle 3 guaranteed that the product is fixed a position on anchor clamps 2 to the mutual pressure effect of supporting of the circumference of product to fixed product, anchor clamps 2 rotatory in-process, the product can not thrown away. The water gel permeating from the joint gap is absorbed by the vacuum suction nozzle 3, so that the water gel is recovered, and the manual wiping work is avoided.

Preferably, the jig 2 rotates on its center. Therefore, glue is only needed to be dispensed on the surface of the display screen 10, a certain amount of glue can be dispensed at the center directly in a dispensing mode, glue dispensing is not needed according to two Y-shaped modes in the prior art, then the cover plate 30 (or the touch screen) is aligned with the display screen 10 placed on the clamp 2 according to the bonding alignment line arranged on the cover plate 30 (or the touch screen), and then the product rotates along with the clamp 2.

Specifically, the rotation speed of the clamp 2 in this embodiment is set according to actual requirements and factors such as viscosity of glue.

Preferably, the driving base 1 in this embodiment includes a driving device, a base 11 and a rotating shaft 12, the base 11 is located below the fixture 2, and a mounting hole is provided on the base 11, the rotating shaft 12 penetrates through the mounting hole and can rotate relative to the base 11, the driving device is connected to the rotating shaft 12, and the rotating shaft 12 is connected to the fixture 2.

The rotating shaft 12 is inserted into the base 11, and the rotating shaft 12 is protected by the base 11. The driving device drives the rotating shaft 12 and the clamp 2 to rotate, so that the product is rotated.

Preferably, the glue laminating device further comprises a pressing part arranged above the product and capable of being pressed against the product. Anchor clamps 2 utilize the pressfitting piece to support the pressure product at rotatory in-process, and under the pushing down effect of pressfitting piece, the product closely laminates with the glue, can reduce the glue time of spreading between the gap of laminating, makes the glue more even that spreads simultaneously.

Illustratively, in the embodiment, when the display screen 10 is attached to the fixture, the pressing member abuts against the cover plate 30 (or the touch screen), so that the display screen 10 and the cover plate 30 (or the touch screen) are both tightly attached to the glue when the fixture 2 rotates, and a certain pressure is applied to the pressing member, which can shorten the spreading time of the glue between the display screen 10 and the cover plate 30 (or the touch screen) and make the glue spread more uniformly.

In other embodiments, the cover plate 30 (or the touch screen) can be placed on the fixture 2, and the display screen 10 can be placed on the cover plate 30 (or the touch screen), at this time, the pressing member is pressed against the display screen 10 during the rotation of the fixture 2. Because of set up the laminating counterpoint line on apron 30 (or the touch-sensitive screen), be convenient for apron 30 (or the touch-sensitive screen) and display screen 10 counterpoint, need be in advance with the product counterpoint and coating glue, whole place again on anchor clamps 2.

Preferably, the inside of the gripper 2 is provided with a vacuum chamber 20, and the vacuum nozzle 3 is communicated with the vacuum chamber 20 of the gripper 2. Vacuum suction nozzle 3 can adsorb the glue that overflows the laminating gap department of product to vacuum cavity 20, realizes the glue and retrieves, reduces the work of artificially wiping, reduces recruitment and time cost, can realize the recovery of glue simultaneously, reduces the cost of glue.

Preferably, the water gel application apparatus further includes a vacuum pump connected to the vacuum chamber 20. When the clamp 2 rotates, the vacuum pump is started, the vacuum pump enables the pressure in the vacuum cavity 20 to be slightly lower than the external pressure, the rapid and automatic adsorption of the water gel overflowing from the joint gap into the vacuum cavity 20 is facilitated, and the recovery of the redundant water gel is realized.

Preferably, the vacuum nozzle 3 is located at the joint gap of the product, and the opening of the vacuum nozzle 3 covers the joint gap to ensure that the glue overflowing the clamp 2 can be completely sucked into the vacuum cavity 20 by the vacuum nozzle 3.

In this embodiment, when the above-mentioned anchor clamps 2 drive apron 30 (or touch-sensitive screen) and display screen 10 on it rotatory, locate the product all around because of above-mentioned vacuum nozzle 3 ring, the opening of vacuum nozzle 3 sets up that slopes down, and the opening adsorbs the laminating gap department at apron 30 (or touch-sensitive screen) and display screen 10, has the glue position that can appear spilling over promptly to cover the laminating gap of apron 30 (or touch-sensitive screen) and display screen 10 completely, can adsorb the glue that spills over completely.

In other embodiments, when the cover plate 30 (or the touch screen) is located on the fixture 2 and the display screen 10 is located above the cover plate 30 (or the touch screen), the opening of the vacuum suction nozzle 3 is tilted upward, and the opening is sucked at the joint gap between the cover plate 30 (or the touch screen) and the display screen 10.

Preferably, a barrier 21 is arranged in the vacuum chamber 20, and the barrier 21 is used for blocking the water gel from directly entering the vacuum pump. The clamp 2 adopts the vacuum cavity 20, the glue in the joint gap can be adsorbed into the vacuum cavity 20 for recycling, and the glue adsorbed by the vacuum suction nozzle 3 is stored in the vacuum cavity 20 and collected for reuse. Because the vacuum pump is communicated with the vacuum chamber, the baffle member 21 is arranged in the vacuum chamber 20, and the phenomenon that the water gel reflows and is directly sucked into the vacuum pump to burn the vacuum pump is avoided.

Preferably, at least two barriers 21 are provided in the vacuum chamber 20 to block the glue to ensure that the glue is not sucked into the vacuum pump. Specifically, when the jig 2 has a rectangular shape to match the shape of the display, two adjacent barrier members 21 are disposed in parallel, and each barrier member 21 is located in the vacuum chamber 20 with its length direction along the length or width direction of the jig 2. Or when the jig 2 is circular, the length of the barrier member 21 extends in the radial direction of the jig 2 and penetrates the jig 2. In addition, the lower end of the barrier member 21 is connected to the lower surface of the vacuum chamber 20 of the jig 2, and the upper end is spaced from the upper surface of the vacuum chamber 20 by a predetermined distance L to ensure that the vacuum chamber 20 is communicated with the vacuum pump.

Preferably, the glue application device further comprises a stretchable joint 22, the vacuum suction nozzle 3 is connected to the stretchable joint 22, the stretchable joint 22 is connected to the fixture 2, and the stretchable joint 22 can adjust the position of the vacuum suction nozzle 3 along the central axial direction of the fixture 2. The stretchable joint 22 is provided to adjust the position of the vacuum nozzle 3 along the central axial direction of the jig 2 to accommodate products of different thickness dimensions.

Preferably, the clamp 2 includes a first clamp 23 and a second clamp 24 which are inserted into each other, the end of the first clamp 23 is provided with a first L-shaped insertion portion 231, the end of the second clamp 24 is provided with a second L-shaped insertion portion 241, the first L-shaped insertion portion 231 and the second L-shaped insertion portion 241 are inserted into each other, and the first L-shaped insertion portion 231 and the second L-shaped insertion portion 241 are both provided with a strip-shaped hole, the strip-shaped hole is arranged along the length or width direction of the clamp 2, and the fastener is inserted into the strip-shaped hole. The above arrangement enables the jig 2 to accommodate products of different lengths and widths.

Preferably, the glue applying device further comprises a UV light source, and the UV light source is used for uniformly spreading the glue in the applying gap of the pre-cured product. When the product on the clamp 2 is driven to rotate, the spread water gel is pre-cured by irradiating with the UV light source, the fluidity of the spread water gel is gradually reduced under the action of centrifugal force, and then the pre-cured product is put into a UV curing machine for primary curing, so that the water gel is finally attached.

Preferably, the glue applying device further comprises a supporting platform 13 arranged on the base 11. The glue laminating device in this embodiment can be arranged in the production line, and the glue utilizes supporting platform 13 to connect on the transfer line at the in-process of spreading, along with the synchronous forward motion of production line, and the glue laminating device is in the motion in-process, and the glue is spread the process and is gone on with the precuring process in step to save operating time, improve work efficiency.

The embodiment also provides a water gel attaching control method, and the water gel attaching device comprises the following steps:

s1, driving the base 1 to drive the clamp 2 to rotate, and uniformly diffusing the water gel in the joint gap of the product to the outside under the action of centrifugal force;

s2, the vacuum suction nozzle 3 sucks the water gel overflowing from the joint gap.

The glue attaching control method is used for controlling the work of the glue attaching device, the centrifugal force generated by the rotation of the clamp 2 is utilized to enable the glue in the attaching gap of the product to be uniformly spread, the glue overflowing from the attaching gap is absorbed by the vacuum suction nozzle 3, the manual wiping work is reduced, the glue attaching control method is utilized to improve the glue attaching process of the liquid crystal touch display screen 10 and the OLED touch display screen 10, and the quality of the attached product is improved. Preferably, step S1 further includes: when the clamp 2 starts to rotate, a vacuum pump of the water glue laminating device is opened, and the pressure in the vacuum cavity 20 is lower than the external pressure.

The vacuum suction of the vacuum chamber 20 by the vacuum pump makes the pressure in the vacuum chamber 20 slightly lower than the external pressure, so that the vacuum suction nozzle 3 can quickly suck the water gel overflowing from the joint gap, and the water gel is absorbed in the vacuum chamber 20 for recycling.

Preferably, while the steps S1 and S2 are performed, the method further includes the step S3: and (5) irradiating the uniformly spread water adhesive in the bonding gap in the step S1 by using a UV light source of the water adhesive bonding device to pre-cure the water adhesive. And (3) irradiating the spread water gel by using a UV light source while performing the steps S1 and S2 to pre-cure the water gel, so that the flowability of the water gel is reduced, and the phenomenon that the quality of the product after being bonded is influenced due to the fact that the water gel in the bonding gap is uneven again caused by the flowing of the water gel in the process of transferring the product to a UV curing machine after the water gel is completely spread is avoided.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a water gel laminating device which characterized in that includes:

a drive base (1);

the fixture (2) is connected to the driving base (1), a product is placed on the fixture (2), and the driving base (1) can drive the fixture (2) to rotate so as to uniformly tile glue in a joint gap of the product;

the vacuum suction nozzle (3) is arranged on the clamp (2) and is annularly arranged in the circumferential direction of the product, and the vacuum suction nozzle (3) is used for positioning the product on the clamp (2) and can adsorb the excessive glue in the joint gap.

2. The glue laminating device according to claim 1, characterized in that a vacuum chamber (20) is arranged inside the clamp (2), and the vacuum suction nozzle (3) is communicated with the vacuum chamber (20) of the clamp (2).

3. The glue applicator of claim 2, further comprising a vacuum pump connected to said vacuum chamber (20).

4. The glue applicator according to claim 3, wherein a barrier (21) is disposed in the vacuum chamber (20), and the barrier (21) is used for preventing the glue from directly entering the vacuum pump.

5. A glue application device according to claim 1, characterized in that the vacuum nozzle (3) is located at the application slit of the product, the opening of the vacuum nozzle (3) covering the application slit.

6. The glue applicator of claim 1, further comprising a stretchable joint (22), wherein the vacuum nozzle (3) is connected to the stretchable joint (22), wherein the stretchable joint (22) is connected to the fixture (2), and wherein the stretchable joint (22) is capable of adjusting the position of the vacuum nozzle (3) along the central axis of the fixture (2).

7. The glue applicator of claim 1 further comprising a UV light source for pre-curing glue spread evenly across the product application gap.

8. The glue laminating device of claim 1, further comprising a laminating member disposed above the product and capable of being pressed against the product.

9. A water gel application control method characterized by using the water gel application device according to any one of claims 1 to 8, comprising the steps of:

s1, driving the base (1) to drive the clamp (2) to rotate, and uniformly diffusing the water gel in the joint gap of the product to the outside under the action of centrifugal force;

s2, adsorbing the water gel overflowing from the joint gap by a vacuum suction nozzle (3).

10. The glue laminating control method of claim 9, wherein step S1 further comprises: when the clamp (2) starts to rotate, a vacuum pump of the water gel laminating device is opened, and the pressure in a vacuum cavity (20) of the clamp (2) is lower than the external pressure.

11. The glue-coating control method of claim 10, wherein, when the steps S1 and S2 are performed, the method further comprises the step S3: and (4) irradiating the uniformly tiled water gel in the bonding gap in the step S1 by using a UV light source of the water gel bonding device to pre-cure the water gel.