Light guide plate surface film pasting device

Abstract

The utility model discloses a light guide plate surface film pasting device which comprises a supporting roller, a first roller, a second roller, a third roller and a fourth roller, a pasting assembly is arranged above the supporting roller and comprises a base plate, the first roller and the second roller are arranged at one end of the supporting roller in the moving direction and used for clamping a pasting film, and the third roller and the fourth roller are used for conveying a light guide plate. The supporting roller is matched with a guide rail of a base plate, a silica gel piece is arranged below the base plate, the lower edge of the silica gel piece is attached to the upper surface of the light guide plate, and guiding assemblies are further arranged on the two sides of the supporting roller and comprise a first guiding wheel arranged above the light guide plate, a second guiding wheel arranged on the side face of the light guide plate and a third guiding wheel arranged below the light guide plate. Auxiliary wheels are arranged on the two sides of the second guide wheel and used for solving the problem of uneven force application of the guide wheels; cutting assemblies can be further arranged on the two sides of the supporting roller to cut off burrs of the pasted film; the base plate can also be arranged in the guide rail and connected with the electric telescopic rod, and reciprocating motion is achieved so that the pressing function can be better achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automation production, especially to a light guide plate surface laminating device. BACKGROUND

[0002] In the production process of the light guide plate, since the liquid crystal panel itself does not emit light, the light source provided by the backlight module and the uniform brightness distribution can make the display display the image, therefore, the brightness enhancement film, the reflection film, the brightness enhancement film and the like are important components of the backlight module. In order to avoid the problems of film deviation and air bubbles between the film layer and the light guide plate, it is necessary to provide a light guide plate surface laminating device to solve the above problems.

[0003] The Chinese utility model patent with the publication number CN215641927U discloses a light guide plate laminating device, but it only positions the light guide plate, and the vacuum adsorption cannot solve the problem of film deviation. UTILITY MODEL CONTENT

[0004] The utility model discloses a purpose at, solve the film deviation problem of prior art to light guide plate.

[0005] In order to solve the above problems, the technical scheme provided by the utility model is as follows:

[0006] A light guide plate surface laminating device, comprising a first roller, a second roller and a supporting roller, the first roller and the second roller are arranged on one side of the supporting roller, the first roller and the second roller are tangent to each other, and one side of the first roller and the second roller is further connected through a gear, characterized in that: a laminating assembly is further arranged above the supporting roller, the laminating assembly comprises a base plate, a silica gel piece is arranged below the base plate, the lower edge of the silica gel piece is laminated with the film on the upper surface of the light guide plate, a third roller and a fourth roller are further arranged on one side of the supporting roller in the movement direction, the third roller and the fourth roller are arranged apart from each other, at least one of the first roller and the second roller is connected with a motor main shaft, and at least one of the third roller and the fourth roller is connected with the motor main shaft.

[0007] In order to improve the laminating precision and prevent the film from deviating, the technical scheme provided by the utility model further comprises: a guide assembly is further arranged in the conveying direction of the supporting roller, the guide assembly comprises a first guide wheel, the first guide wheel is arranged above the light guide plate and is tangent to the upper surface of the film, the first guide wheel is connected with the motor main shaft, the linear speed of the first guide wheel is the same as that of the first roller, and the rotation will give the light guide plate and the film a traction force, preventing the silica gel piece from moving too fast and causing the film to be raised.

[0008] Preferably, the guide assembly further comprises a second guide wheel, and the second guide wheel is arranged on the side surface of the light guide plate and is tangent to the side surface of the light guide plate.

[0009] To improve the uneven stress generated between the first guide wheel and the light guide plate, resulting in wrinkles on the film, the utility model provides technical schemes further comprising: a third guide wheel is further arranged symmetrically with the first guide wheel along the light guide plate.

[0010] Preferably, the second guide wheel is further provided with an auxiliary wheel on both sides, the diameter of the auxiliary wheel is slightly larger than that of the second guide wheel, and the second guide wheel and the auxiliary wheel actually form a butterfly-shaped wheel which not only relieves the downward pressure generated by the first guide wheel and the silica gel piece but also generates a transverse limiting effect on the light guide plate.

[0011] To reduce the burr generated by the film deviation, the utility model provides technical schemes further comprising: a cutting assembly is further arranged on both sides of the supporting roller, the cutting assembly comprises a cutting knife and a rotating seat, the cutting knife is hinged to the rotating seat, and the cutting edge of the cutting knife is attached to both sides of the light guide plate and opposite to the conveying direction of the supporting roller.

[0012] To ensure that the film is more meticulous and the film is more closely combined with the light guide plate, the utility model provides technical schemes comprising: the fitting assembly further comprises a guide rail, the guide rail is adapted to the substrate, the substrate is further connected to a motor-driven electric telescopic rod, and the extension direction of the electric telescopic rod is the same as the setting direction of the guide rail. When the electric telescopic rod reciprocates, the substrate and the silica gel piece arranged below the substrate will compact the film.

[0013] To make the silica gel piece reciprocate with the light guide plate more easily while also generating a certain compacting effect, the utility model provides technical schemes further comprising: the silica gel piece is provided with two arc surfaces.

[0014] The utility model has the advantages and beneficial effects that:

[0015] 1. The positioning function of the guide device and the baffle ensures the precision of the light guide plate film, and avoids film deviation;

[0016] 2. The silica gel piece is connected to the guide rail and the electric telescopic rod, the silica gel piece can reciprocate along the guide rail, and then the film is closely attached to the surface of the light guide plate, the reciprocating compression can also discharge the air between the light guide plate and the film compared with direct compression, thereby reducing the bubble and reducing the scrap rate. DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the utility model embodiment;

[0018] Figure 2 is a partial structure along the A-A sectional view of the utility model embodiment;

[0019] Figure 3is a sectional view of the guiding assembly along B-B of the embodiment of the utility model;

[0020] Figure 4 is a schematic view of the case that the film appears wrinkle;

[0021] Reference Signs: 10-supporting roller, 11-first roller, 12-second roller, 13-third roller, 14-fourth roller, 15-gear, 20-laminating assembly, 21-substrate, 22-silica gel piece, 23-guide rail, 24-electric telescopic rod, 30-guiding assembly, 31-first guiding wheel, 32-second guiding wheel, 33-third guiding wheel, 34 auxiliary wheel, 40-cutting assembly, 41-cutting knife, 42-rotating seat, 50-limiting baffle, 60-light guide plate, 70-film. DETAILED DESCRIPTION

[0022] The specific embodiment of the utility model is further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0023] Embodiment

[0024] Please refer to Figures 1-2 A light guide plate surface film device, including first roller 11, second roller 12 and supporting roller 10, first roller 11 and second roller 12 are set up in the one side of supporting roller 10 feed, first roller 11 and second roller 12 are tangent contact, one side of first roller 11 and second roller 12 still is engaged through gear 15, still be provided with laminating assembly 20 above supporting roller 10, the laminating assembly 20 includes substrate 21, is provided with silica gel piece 22 below substrate 21, the lower edge of silica gel piece 22 is laminated with the film 70 of light guide plate 60 upper surface, still be provided with third roller 13 and fourth roller 14 in the one side of supporting roller 10 feed, third roller 13 and fourth roller 14 are apart from each other, first roller 11 is connected with motor spindle, third roller 13 is connected with motor spindle. First roller 11 and second roller 12 are driven through gear 15, ensure that the linear velocity of both is same, tangent setting is used for pressing and transmitting film 70, third roller 13 and fourth roller 14 are apart from each other and are used for conveying light guide plate 60 with certain thickness. Still be provided with limiting baffle 50 in the both sides of supporting roller 10, limiting baffle 50 can first correct the relative position of left and right of light guide plate 60 conveyed by roller, prevent light guide plate 60 from running deviation. The function of silica gel piece 22 is mainly to make light guide plate 60 and film 70 conveyed by roller press tightly.

[0025] Please refer to Figure 3A guide assembly 30 is also provided in the conveying direction of the support roller 10. The guide assembly 30 includes a first guide wheel 31 disposed above the light guide plate 60 and tangentially contacting the upper surface of the film 70; a second guide wheel 32 disposed on the side of the light guide plate 60 and tangentially contacting the light guide plate 60; a third guide wheel 33 symmetrically disposed below the light guide plate 60 along the same direction as the first guide wheel 31; and auxiliary wheels 34 disposed on both sides of the second guide wheel 32. The first guide wheel 31 is driven by a motor, and the diameter of the auxiliary wheels 34 is slightly larger than that of the second guide wheel 32. The main function of the guide assembly 30 is to provide a traction force to the film 70 and the light guide plate 60, preventing the silicone part 22 from moving faster than the first roller 11 when moving towards the electric telescopic rod 24. Figure 4 As shown, the film 70 is raised, and its secondary function is to guide the film 70 to be located on the surface of the light guide plate 60. In addition, it can also limit the position of the light guide plate 60 and the film 70, which is suitable for continuous production.

[0026] Please see Figure 1 A cutting assembly 40 is also provided on both sides of the support roller 10. The cutting assembly 40 includes a cutting blade 41 and a rotating seat 42. The cutting blade 41 is hinged to the rotating seat 42, and the blade of the cutting blade 41 is attached to both sides of the light guide plate 60 and faces the conveying direction of the support roller 10. After the film application is completed, the film 70 still has burrs. Normally, during the film application process, the film 70 will extend burrs. Since the light guide plate 60 is pre-cut before this step, the cutting assembly works for the film 70. During use, the hinge angle of the cutting blade 41 on the rotating seat 42 can be adjusted to determine a more suitable cutting angle for different films 70.

[0027] Please see Figure 1 The bonding assembly 20 also includes a guide rail 23, which is adapted to the substrate 21. The substrate 21 is also connected to a motor-driven electric telescopic rod 24, the extension and retraction direction of which is the same as the setting direction of the guide rail 23. When the electric telescopic rod 24 reciprocates, it will drive the substrate 21 and the silicone part 22 set under the substrate 21 to press the film 70 firmly. The reciprocating movement of the electric telescopic rod 24 driving the substrate 21 can repeatedly press the film 70 onto the upper surface of the light guide plate 60. The reciprocating movement not only improves the bonding effect, but also, to a certain extent, can repeatedly squeeze out the air between the film 70 and the light guide plate 60, thus improving the bonding quality.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A film-coating device for a light guide plate surface, comprising a first roller, a second roller, and a support roller, wherein the first roller and the second roller are disposed on the feeding side of the support roller, the first roller and the second roller are in tangential contact, and one side of the first roller and the second roller are also meshed by gears, characterized in that: A bonding assembly is also provided above the support roller. The bonding assembly includes a substrate, and a silicone part is provided below the substrate. The lower edge of the silicone part is bonded to the film on the upper surface of the light guide plate. A third roller and a fourth roller are also provided on one side of the movement direction of the support roller. The third roller and the fourth roller are separated. The first roller or the second roller is connected to the motor spindle, and the third roller and / or the fourth roller is connected to the motor spindle. The first roller or the second roller, the third roller and / or the fourth roller connected to the motor spindle have the same linear velocity. Limiting baffles are also provided on both sides of the support roller.

2. The light guide plate surface film application device according to claim 1, characterized in that: A first guide wheel is also provided above the light guide plate. The first guide wheel is in tangential contact with the upper surface of the film and is connected to the motor spindle.

3. The light guide plate surface coating device according to claim 2, characterized in that: A third guide wheel is also provided below the light guide plate. The third guide wheel is symmetrically arranged along the light guide plate and the first guide wheel, and is in tangential contact with the lower surface of the light guide plate.

4. The light guide plate surface coating device according to claim 1, characterized in that: A second guide wheel is also provided on the side of the light guide plate, and the second guide wheel is in tangential contact with the side of the light guide plate.

5. The light guide plate surface coating device according to claim 4, characterized in that: The second guide wheel is further provided with auxiliary wheels on both sides, and the diameter of the auxiliary wheels is larger than that of the second guide wheel.

6. The light guide plate surface coating device according to claim 1, characterized in that: Cutting assemblies are also provided on both sides of the support roller. The cutting assembly includes a cutting blade and a rotating seat, and the cutting blade is hinged to the rotating seat.

7. The light guide plate surface coating device according to claim 1, characterized in that: The bonding assembly also includes a guide rail adapted to the substrate. The substrate is also connected to a motor-driven telescopic rod, the telescopic direction of which is the same as the direction of the guide rail.

8. The light guide plate surface coating device according to claim 7, characterized in that: The silicone component has two curved surfaces.

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