Display screen attaching back glue bubble removing clamp

Abstract

The utility model relates to a display screen attaching back glue bubble removing clamp which comprises a base, a positioning groove is formed in the base, the positioning groove comprises four sections distributed in the circumferential direction, the groove bottom face of each section of the positioning groove is an inclined face, and a plurality of small rollers are arranged on the groove bottom face. A roller is arranged in each section of positioning groove, is in rolling fit with the small roller and can roll from an initial position to an ending position along the positioning groove under the action of downward pressure; an elastic piece is arranged between the roller and the base and used for providing pre-tightening force after the downward pressing force is relieved so that the roller can return to the initial position. The problem of bubbles between the double-sided adhesive tape and the screen cover plate is solved, and the flatness and the attractiveness of the back face of the screen cover plate are improved after the double-sided adhesive tape is attached to the back face of the screen cover plate.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen adhesive backing attachment, in particular to a display screen adhesive backing attachment bubble removal clamp. Background Art

[0002] During the assembly process of the display module, it is necessary to apply double-sided adhesive to the cover plate on the back of the display. Usually, a special clamp is used to apply double-sided adhesive to the edges of the cover plate. During the attachment process, since the cover plate is rigid and the double-sided adhesive is soft and easily deformed, bubbles will inevitably be generated on the contact surface of the two during attachment. At present, when conventional clamps are used to attach double-sided adhesive to the display cover plate, more and larger bubbles are generated. This does not meet the current customer demand for small and few bubbles or even zero bubbles. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a bubble removal fixture for attaching adhesive backing to a display screen, aiming to improve the bubble problem between the double-sided adhesive and the screen cover.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A display screen adhesive backing bubble removal fixture comprises a base, wherein the base is provided with a positioning groove, wherein the positioning groove comprises four sections distributed along the circumferential direction, the bottom surface of each section of the positioning groove is an inclined surface, and a plurality of small rollers are provided on the bottom surface of the groove;

[0006] A roller is provided in each positioning groove, and the roller and the small roller are in rolling cooperation, and can roll along the positioning groove from the initial position to the end position under the action of downward pressure;

[0007] An elastic member is provided between the roller and the base, and is used to provide a pre-tightening force to return the roller to an initial position after the downward pressure is released.

[0008] Further technical solutions are:

[0009] The inclined surface is inclined downward or downwardly along the direction from the inside to the outside of the base.

[0010] The inclination angle and direction of the inclined surface of each section of the positioning groove are the same.

[0011] The small rollers are arranged in multiple groups along the rolling direction of the drum, and the small rollers in each group are closely distributed along the axial direction thereof.

[0012] The axial direction of the roller is parallel to the length direction of the positioning groove in which the roller is located.

[0013] The inclination angle of the inclined surface is 5 to 20 degrees.

[0014] The structure of the roller comprises an inner roller and an outer cylinder arranged outside the inner roller, and a rolling bearing is arranged between the inner wall of the outer cylinder and the outer wall of the inner roller.

[0015] The two ends of the inner roller are respectively provided with connecting parts, which are used to connect one end of the elastic member, and the other end of the elastic member is connected to the bottom surface of the positioning groove or the bottom surface of the base.

[0016] The rolling bearing components are at least two groups of balls evenly arranged along the axial direction of the drum, and the balls in each group are evenly distributed along the circumference.

[0017] The elastic member is a spring or an elastic band.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model adopts a structure in which a roller is arranged in the positioning groove, so that when the roller is subjected to downward pressure during the pasting process and moves along the positioning groove, the bubbles between the double-sided adhesive and the screen cover can be gradually discharged outwards, thereby meeting the requirement of small, few or even zero bubbles after the screen cover is attached with the double-sided adhesive, and improving the flatness and aesthetics of the appearance of the back of the screen cover after attachment.

[0020] The utility model arranges a small roller on the bottom surface of the positioning groove, which reduces the rolling friction between the roller and the drum, and ensures that the drum moves smoothly along the positioning groove under the action of downward pressure.

[0021] Other features and advantages of the present invention will be described in the following description or will be understood by implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of an embodiment of the utility model.

[0023] Figure 2 for Figure 1 Sectional view of section AA.

[0024] Figure 3 The figure is a schematic diagram of the matching structure of a roller and a positioning groove in which the roller is located according to an embodiment of the utility model.

[0025] Figure 4 This is a cross-sectional view of the structure of a roller in cooperation with a positioning groove when subjected to downward pressure in an embodiment of the utility model.

[0026] Figure 5 This is a schematic diagram of the initial state when the embodiment of the utility model is used.

[0027] Figure 6 This is a schematic diagram of the first state of the movement process of the drum when the embodiment of the utility model is used.

[0028] Figure 7This is a schematic diagram of the second state of the roller movement process when the embodiment of the utility model is used.

[0029] Figure 8 It is a partial enlarged schematic diagram of the rollers in two positioning grooves on opposite sides contacting the display screen in the initial state when the embodiment of the utility model is used.

[0030] In the figure: 1. base; 2. positioning groove; 3. roller; 4. small roller; 5. elastic member; 6. release film; 7. double-sided adhesive; 8. display screen cover; 9. display screen sensor; 31. outer cylinder; 32. rolling bearing member; 33. inner roller. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0032] See also Figures 1 to 3 The display screen adhesive bubble removal fixture of this embodiment includes a base 1, a positioning groove 2 is provided in the base 1, and the positioning groove 2 includes four sections distributed along the circumferential direction. The bottom surface of each section of the positioning groove 2 is an inclined surface, and a plurality of small rollers 4 are provided on the bottom surface of the groove;

[0033] A roller 3 is provided in each positioning groove 2. The roller 3 and the small roller 4 are in rolling cooperation and can roll from the initial position to the final position along the positioning groove 2 under the action of downward pressure. An elastic member 5 is provided between the roller 3 and the base 1, which is used to provide pre-tightening force after the downward pressure is released, so that the roller 3 returns to the initial position.

[0034] Specifically, the inclined surface is downward or inclined downward from the inner side to the outer side of the base 1. The drawings of this embodiment show that the inclined surface is inclined downward from the inner side to the outer side of the base 1. The inclined angle and direction of the inclined surface of each segment of the positioning groove 2 are the same. That is, the rollers 3 in each segment of the positioning groove 2 move synchronously to the outer side of the base 1 when subjected to downward pressure.

[0035] See also Figure 3 and Figure 4 , there are multiple groups of small rollers 4 along the rolling direction of the drum 3, and the small rollers 4 in each group are closely distributed along its axial direction. The structure of the drum 3 includes an inner roller 33 and an outer cylinder 31 arranged outside the inner roller 33, and a rolling bearing 32 is arranged between the inner wall of the outer cylinder 31 and the outer wall of the inner roller 33. When the drum 3 moves under the action of downward pressure, the rotation direction of the outer cylinder 31 of the drum 3 is opposite to the rotation direction of the small rollers 4. Figure 4 shown.

[0036] Specifically, two ends of the inner roller 33 are respectively provided with connecting parts, which are used to connect one end of the elastic member 5, and the other end of the elastic member 5 is connected to the bottom surface of the positioning groove 2 or the bottom surface of the base 1.

[0037] The rolling bearing member 32 is at least two groups of balls evenly arranged along the axial direction of the drum 3, and the balls in each group are evenly distributed along the circumference.

[0038] Specifically, the inclination angle of the inclined surface is 5 to 20 degrees.

[0039] Specifically, the elastic member 5 is a spring or an elastic band.

[0040] Specifically, the axial direction of the roller 3 is parallel to the length direction of the positioning groove 2 in which it is located. Among them, two of the four sections of positioning grooves 2 distributed along the circumferential direction extend along the length direction of the base 1, and the other two sections extend along the width direction of the base 1, that is, the axial directions of the rollers 3 in two adjacent sections of positioning grooves 2 are perpendicular to each other, and the axial directions of the rollers 3 in two opposite sections of positioning grooves 2 are parallel to each other.

[0041] See also Figures 5 to 7 , which are the three states of the clamp during use. In each figure, (a) is a top view, and (b) is a central cross-section of (a) (with Figure 1 The working process of this embodiment is as follows:

[0042] like Figure 5 As described above, the display screen is placed in the base 1 so that the four sides of the display screen are placed in the four positioning grooves 2 respectively. The positioning grooves 2 are pre-laid with double-sided adhesive 7 with a release film 6 on one side. At this time, the positioning grooves 2 are respectively filled with the display screen cover 8, the display screen sensor 9, the double-sided adhesive 7 and the release film 6 from top to bottom. In the initial state, the roller 3 in each positioning groove 2 is initially located near the inner side of the base 1. At this time, the roller 3 is applied to the display screen as shown in the following example. Figure 5 The downward pressure indicated by the arrow direction in (b) causes the rollers 3 in each segment of the positioning groove 2 to move synchronously toward the outside of the base 1 along the inclined groove bottom surface of each positioning groove 2 under the downward pressure, that is, Figure 6 The roller 3 moves in the direction indicated by the arrow in (a). The roller 3 cooperates with the small roller 4 to continuously move outward, and finally moves to the end of the positioning groove 2 close to the outside of the base. Figure 7 See Figure 8 Since the double-sided adhesive 7 is soft, the part in contact with the supporting surface of the roller 3 is lifted up by the roller 3, while the part not in direct contact with the roller 3 is bent downward. The rigid display screen cover plate 8 is located on the upper side of the double-sided adhesive 7. During the downward pressure process, the roller 3 lifts the double-sided adhesive 7 upward from the bottom to make it adhere to the lower surface of the display screen cover plate 8. At the same time, during the rolling process of the roller 3, the bubbles between the display screen cover plate 8 and the double-sided adhesive 7 are gradually squeezed outward until they are squeezed out from the outermost edge to achieve exhaust. When the attachment is completed, the downward pressure is released, and the roller 3 returns to the initial position under the restoring force of the elastic member 5 so as to carry out the next work.

[0043] As another embodiment, the bottom surface of the positioning groove 2 can be set to be inclined downward from the outside to the inside of the base 1. That is, the rollers 3 in each segment of the positioning groove 2 move synchronously to the inside of the base 1 when subjected to downward pressure, that is, the initial position of the roller is on the outside, and the final position is on the inside, which can also achieve the purpose of rolling and exhausting under the action of downward pressure.

[0044] A baffle or other limiting member may be provided at the end position of the positioning groove to prevent the roller from exceeding the maximum stroke.

[0045] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display screen adhesive backing bubble removal fixture, comprising a base (1), wherein the base (1) is provided with a positioning groove (2), wherein the positioning groove (2) comprises four sections distributed along the circumferential direction, and wherein: The bottom surface of each positioning groove (2) is an inclined surface, and a plurality of small rollers (4) are arranged on the bottom surface of the groove; A roller (3) is provided in each section of the positioning groove (2), and the roller (3) and the small roller (4) are in rolling cooperation and can roll along the positioning groove (2) from an initial position to a terminal position under the action of downward pressure; An elastic member (5) is provided between the roller (3) and the base (1), and is used to provide a pre-tightening force to return the roller (3) to its initial position after the downward pressure is released.

2. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The inclined surface is downward or inclined downward in a direction from the inside to the outside of the base (1).

3. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The inclination angle and direction of the inclined surface of each section of the positioning groove (2) are the same.

4. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The small rollers (4) are arranged in multiple groups along the rolling direction of the drum (3), and the small rollers (4) in each group are closely distributed along the axial direction thereof.

5. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The axial direction of the roller (3) is parallel to the length direction of the positioning groove (2) in which it is located.

6. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The inclination angle of the inclined surface is 5 to 20 degrees.

7. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The structure of the roller (3) comprises an inner roller (33) and an outer cylinder (31) arranged outside the inner roller (33), and a rolling bearing (32) is arranged between the inner wall of the outer cylinder (31) and the outer wall of the inner roller (33).

8. The bubble removal fixture for attaching adhesive to a display screen according to claim 7, characterized in that: The inner roller (33) has connecting parts at both ends, which are used to connect to one end of the elastic member (5); the other end of the elastic member (5) is connected to the bottom surface of the positioning groove (2) or the bottom surface of the base (1).

9. The bubble removal fixture for attaching adhesive to a display screen according to claim 7, characterized in that: The rolling bearing member (32) comprises at least two groups of balls evenly arranged along the axial direction of the roller (3), and the balls in each group are evenly distributed along the circumference.

10. The bubble removal fixture for attaching adhesive to a display screen according to claim 1, characterized in that: The elastic member (5) is a spring or an elastic band.

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