CN219602872U - Attaching jig for Mylar adhesive tape - Google Patents

Abstract

The utility model relates to the technical field of display and discloses an attaching jig for a Mylar adhesive tape, which comprises an attaching mechanism, a first smoothing mechanism, a second smoothing mechanism and a supporting mechanism, wherein a rotating mechanism is arranged on the attaching mechanism and can drive the attaching mechanism to rotate; the first smoothing mechanism is arranged on one side of the attaching mechanism and is provided with a smoothing part for smoothing the Mylar adhesive tape attached to the side surface of the display device; the second is smooth the mechanism and is set up in first smooth one side that mechanism kept away from attached mechanism, and the second is smooth the mechanism and is provided with first gyro wheel and second gyro wheel, and the clearance between first gyro wheel and the second gyro wheel that are parallel to each other is used for smooth the first face of display device and the attached Mylar tape of third face. The attaching jig of the Mylar adhesive tape provided by the utility model is used for solving the problem of poor attaching of the Mylar adhesive tape of the existing display device.

Description

Attaching jig for Mylar adhesive tape

Technical Field

The utility model relates to the technical field of display, in particular to an attaching jig for a Mylar tape.

Background

The liquid crystal display panel consists of an array substrate, a color filter substrate and a liquid crystal layer between the array substrate and the color filter substrate, and the liquid crystal display panel can not emit light, so that a backlight module is required to be mounted for normal display.

With the demands of the market for thinning and narrowing the frame of the display device, generally, after the liquid crystal display panel and the backlight module are assembled, a mylar adhesive tape is attached to fix and shade the light, and the mylar adhesive tape is attached around four sides of the display device. Fig. 1 is a cross-sectional view of a conventional display device to which a mylar tape is attached, fig. 1 shows only one side of the display device to which the mylar tape is attached, referring to fig. 1, a liquid crystal layer (not shown) is disposed between a color filter substrate 20 and an array substrate 10, a first polarizer 31 is disposed on an upper surface of the color filter substrate 20, a second polarizer 32 is disposed on a lower surface of the array substrate 10, a backlight module 40 is disposed on the other side of the second polarizer 32 away from the array substrate 10, and the mylar tape 50 includes a first portion 51, a second portion 52, and a third portion 53, which are respectively attached to a partial region of the first side of the display device, a second side of the display device, and a partial region of the third side of the display device. The first surface of the display device is positioned on the upper surface of the color filter substrate, the second surface of the display device is positioned on the side surface of the display device, and the third surface of the display device is positioned on the lower surface of the backlight module.

Because the backlight module of some models is thicker, when attaching the second part of mylar sticky tape, need smooth with two hands, when the action of two hands is asynchronous, can appear display device's side uneven problem, and then lead to other positions's unevenness. The existing solution is to intercept the product with poor adhesion through appearance inspection, the mode needs to increase manpower to inspect, the manpower cost is higher, the risk of product missing inspection exists, in addition, when the adhesion is poor, the display device is reworked and material waste can be caused.

Disclosure of Invention

In view of this, the embodiment of the utility model provides a jig for attaching a mylar adhesive tape, which is used for solving the problem of poor adhesion of the mylar adhesive tape of the existing display device.

The embodiment of the utility model provides an attaching jig for a Mylar tape, which comprises the following components:

the attaching mechanism is provided with a rotating mechanism which can drive the attaching mechanism to rotate;

the first smoothing mechanism is arranged on one side of the attaching mechanism and is provided with a smoothing part, and the smoothing part is provided with an arc surface for smoothing a Mylar tape attached to the side surface of the display device;

the second is smooth the mechanism, is in the first mechanism of smoothing is kept away from one side of attaching the mechanism, the second is smooth the mechanism and is provided with first gyro wheel and second gyro wheel, and is parallel to each other the clearance between first gyro wheel with the second gyro wheel is used for smoothing the attached Mylar tape of display device first face and third face.

Further, the attaching mechanism further comprises a base, a supporting table and a bearing plate, a fixing seat is arranged on the base, one end of the rotating mechanism is connected with the fixing seat, the other end of the rotating mechanism is connected with the supporting table, and the bearing plate is arranged on the supporting table.

Further, the bearing plate comprises a first bearing plate and a second bearing plate, and the first bearing plate and the second bearing plate are arranged in parallel.

Further, the first smoothing mechanism comprises a base, and the smoothing part is arranged on the base.

Further, the smoothing part is an arc-shaped groove which is bent downwards.

Further, the smoothing part is an arc-shaped bulge which is bent upwards.

Further, the second is smooth mechanism still includes the link, the link includes horizontal pole, first montant and second montant, first montant with the second montant sets up perpendicularly respectively the both ends of horizontal pole, first gyro wheel the second gyro wheel and horizontal pole parallel arrangement each other, first gyro wheel with the one end setting of second gyro wheel is on first montant, first gyro wheel with the other end setting of second gyro wheel is on the second montant.

Further, a first cylinder and a second cylinder are respectively arranged at two ends of the first cavity of the first vertical rod, a third cylinder and a fourth cylinder are respectively arranged at two ends of the second cavity of the second vertical rod, the first cylinder and the third cylinder control the first roller to move towards the second roller along a first direction, and the second cylinder and the fourth cylinder control the second roller to move towards the first roller along the first direction.

Further, the attaching jig of the mylar tape further comprises:

the support mechanism comprises a first support rod, a second support rod and a fixing plate, wherein the first support rod is arranged on one side of a base of the first leveling mechanism, the second support rod is arranged on the other side of the base, and the fixing plate is arranged between the first support rod and the second support rod.

Further, the upper surface of the fixing plate is provided with a plurality of air holes, the lower surface of the fixing plate is provided with a vent pipe connected with a plurality of the air holes, and negative pressure in the air holes adsorbs the display device on the fixing plate.

In summary, according to the attaching jig for the mylar adhesive tape provided by the embodiment of the utility model, the rotating part is arranged on the attaching mechanism, so that a person can rotate the attaching mechanism to realize the rotation of the display device when attaching the mylar adhesive tape; by arranging the first smoothing mechanism, smoothing of the side surface of the display device can be better realized; by arranging the second smoothing mechanism, the Mylar adhesive tape on the first surface and the third surface of the display device can be smoothed; the embodiment of the utility model is also provided with the supporting mechanism which can adsorb the display device, so that the display device can be moved to the position above the first smoothing mechanism or the second smoothing mechanism more conveniently to finish the attachment of the Mylar adhesive tape.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

FIG. 1 is a cross-sectional view of a conventional display device to which Mylar tape is attached;

fig. 2 is an overall diagram of a mylar adhesive tape attaching jig according to an embodiment of the utility model;

FIG. 3 is a side view of a support mechanism of a Mylar tape attachment jig according to an embodiment of the utility model above a first smoothing mechanism;

FIG. 4 is a side view of a support mechanism of a Mylar tape attachment jig provided in an embodiment of the utility model above a second smoothing mechanism;

FIG. 5 is a top view of an attaching mechanism according to a first embodiment of the present utility model;

FIG. 6 is a side view of an attachment mechanism according to a first embodiment of the present utility model;

FIG. 7 is a top view of a second smoothing mechanism provided in accordance with a first embodiment of the present utility model;

FIG. 8 is a cross-sectional view taken along AA' of FIG. 7;

FIG. 9 is a flowchart of a Mylar attachment provided in accordance with an embodiment of the present utility model;

fig. 10 is a side view of a mylar adhesive tape attaching jig according to a second embodiment of the present utility model;

fig. 11 is a flowchart of mylar tape attachment according to the second embodiment of the present utility model.

Reference numerals illustrate:

10, an array substrate; 20, a color filter substrate; 31, a first polarizer; 32, a second polarizer; 40, a backlight module; 50/61, mylar tape; 51, a first portion; 52, a second portion; 53, a third portion; 60, a display device; d1, a first direction; d2, second direction;

1, an attaching mechanism; 11, a base; 12, a rotating mechanism; 13, a supporting table; 14; a carrying plate; 141, a first carrier plate; 142, a second carrier plate; 110, fixing base; 130, limiting nails;

2, a first smoothing mechanism; 21, a base; 22/22', a pacifying portion;

3, a second smoothing mechanism; 30, a connecting frame; 301, a cross bar; 302, a first vertical rod; 3021, a first cavity; 30211, a first cylinder; 30212, a second cylinder; 303, a second vertical rod; 3031, a second cavity; 30311, a third cylinder; 30312, fourth cylinder; 31, a first roller; 310, a first bearing; 32, a second roller; 320, a second bearing;

4, a supporting mechanism; 41, a first support bar; 410, a first U-shaped groove; 411, a first screw; 42, a second support bar; 43, a fixing plate; 430, air holes.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Fig. 2 is an overall view of a mylar adhesive tape attaching jig according to an embodiment of the present utility model, fig. 3 is a side view of a supporting mechanism of the mylar adhesive tape attaching jig according to an embodiment of the present utility model above a first leveling mechanism, please refer to fig. 2 and 3, in which the mylar adhesive tape attaching jig includes an attaching mechanism 1, a first leveling mechanism 2 and a second leveling mechanism 3, the first leveling mechanism 2 is disposed at one side of the attaching mechanism 1, and the second leveling mechanism 3 is disposed at one side of the first leveling mechanism 2 away from the attaching mechanism 1.

Fig. 5 is a top view of an attaching mechanism according to an embodiment of the present utility model, fig. 6 is a side view of the attaching mechanism according to the embodiment of the present utility model, and referring to fig. 5 and 6, the attaching mechanism 1 includes a base 11, a rotating mechanism 12, a supporting table 13 and a carrying board 14, the rotating mechanism 12 is disposed on the base 11, the supporting table 13 is disposed on the rotating mechanism 12, and the carrying board 14 is disposed on the supporting table.

Further, the base 11 is disposed at the bottom of the attachment mechanism 1, a fixing seat 110 is disposed at the center of the base 11, the bottom of the fixing seat 110 is fixedly connected with the base 11, and a connecting piece of the fixing seat 110 and the base 11 can be a screw and a threaded hole or can be an integrated design. Preferably, the base 11 is rectangular, and the fixing base 110 is cylindrical.

Further, the rotating mechanism 12 is disposed above the fixed seat 110, a bearing is disposed in the fixed seat 110, one end of the bearing is fixedly connected with the fixed seat 110, the other end extends into the rotating mechanism 12, and the rotating mechanism 12 can rotate 360 degrees around the bearing. The rotating mechanism 12 is further provided with an angle bayonet (not shown) and a baffle (not shown), when the rotating mechanism 12 rotates to a certain angle, the baffle is positioned in the angle bayonet, so that the rotating mechanism 12 and the fixing seat 110 are relatively fixed, and personnel can attach the Mylar tape conveniently.

Further, the supporting table 13 is fixedly connected above the rotating mechanism 12, that is, the rotating mechanism 12 can drive the supporting table 13 to rotate at different angles, and fix the supporting table 13 at a certain angle. A plurality of protruding limit nails 130 are distributed on the upper surface of the supporting table 13 in an array manner and are used for being matched and fixed with the bearing plate 14. Preferably, the support table 13 is rectangular.

Further, the carrying plate 14 is disposed above the supporting table 13, the carrying plate 14 is also rectangular, and the carrying plate 14 and the supporting table 13 are connected vertically. In the embodiment of the present utility model, the carrier plate 14 includes a first carrier plate 141 and a second carrier plate 142 disposed parallel to each other, and the first carrier plate 141 and the second carrier plate 142 form a horizontal plane for carrying the display device. The lower surfaces of the first and second loading plates 141 and 142 are provided with a plurality of blind holes (not shown) which cooperate with the limit pins 130 on the support table 13 to limit. Specifically, the blind holes and the stop pins 130 are sized and shaped to fit. Because the supporting table 13 is provided with the plurality of limit nails 130, the lower surface of the bearing plate 14 is provided with the plurality of blind holes, and the distance between the first bearing plate 141 and the second bearing plate 142 can be adjusted, so that the attaching mechanism 1 is suitable for Mylar attachment of a plurality of display devices with different sizes. In the embodiment of the present utility model, only the first and second carrier plates 141 and 142 are shown, but of course, in other embodiments, a third carrier plate, or a fourth carrier plate may be provided for more firmly supporting a larger-sized display device.

The attaching mechanism of the Mylar adhesive tape attaching jig provided by the utility model is provided with the rotating mechanism, so that personnel can attach Mylar adhesive tapes on all edges of a display device conveniently by rotating the attaching mechanism. The attaching mechanism of the Mylar tape attaching jig provided by the embodiment of the utility model can realize the rotation of the display device by rotating the attaching mechanism, saves labor hour and avoids the quality problem of products.

Referring to fig. 2 and 3, the first smoothing mechanism 2 is disposed on one side of the attaching mechanism 1, the first smoothing mechanism 2 includes a base 21 and a smoothing portion 22, the smoothing portion 22 is disposed on the base 21, and a cambered surface is disposed on the smoothing portion for smoothing a mylar adhesive tape attached to a side surface of the display device; specifically, the pacifier 22 is a downwardly curved arcuate slot. When the display device is placed on the leveling part 22 after the mylar tape is attached to the upper surface of the display device, the mylar tape is flatly attached to the side surface of the display device due to the arc surface of the leveling part 22 along with the continuous movement of the display device on the leveling part 22.

Further, the inner wall of the pacifying portion 22 is provided with a flexible material such as silica gel, which has an advantage of preventing the side of the display device from causing abnormal products when pacifying.

Fig. 7 is a top view of a second leveling mechanism according to an embodiment of the present utility model, and fig. 8 is a cross-sectional view taken along AA' of fig. 7. Referring to fig. 7 and 8, the second leveling mechanism 3 includes a connecting frame 30, a first roller 31, and a second roller 32, and the first roller 31 and the second roller 32 are disposed in parallel with each other in the connecting frame 30.

Further, the connecting frame 30 includes a cross bar 301, a first vertical bar 302 and a second vertical bar 303, one end of the cross bar 301 is vertically connected with the first vertical bar 302, and the other end of the cross bar 301 is vertically connected with the second vertical bar 303, that is, the first vertical bar 302 and the second vertical bar 303 are respectively vertically disposed at two ends of the cross bar 301.

Further, the extending directions of the first roller 31 and the second roller 32 are parallel to the cross bar 301, the first cavity 3021 is provided in the first vertical rod 302, the second cavity 3031 is provided in the second vertical rod 303, one end of the first bearing 310 in the first roller 31 is disposed on the first vertical rod 302, the other end is disposed on the second vertical rod 303, the first roller 31 can rotate around the first bearing 310, one end of the second bearing 320 in the second roller 32 is disposed on the first vertical rod 302, the other end is disposed on the second vertical rod 303, and the second roller 32 can rotate around the second bearing 320.

Further, the first cylinder 30211 and the second cylinder 30212 are disposed at two ends of the first cavity 3021 of the first vertical rod 302, the third cylinder 30311 and the fourth cylinder 30312 are disposed at two ends of the second cavity 3031 of the second vertical rod 303, the first cylinder 30211 and the third cylinder 30311 are used for controlling the first roller 31 to move toward the second roller 32 along the first direction D1, and the second cylinder 30212 and the fourth cylinder 30312 are used for controlling the second roller 32 to move toward the first roller 31 along the first direction D1. The first direction D1 refers to a direction along the first vertical rod 302 and the second vertical rod 303, and the second direction D2 refers to a direction along the cross rod 301, where the first direction D1 and the second direction D2 are perpendicular to each other. That is, the interval between the first roller 31 and the second roller 32 can be adjusted by the air cylinder, thereby adapting to the smoothing of the Mylar tapes of display devices with different thicknesses. The gap between the first roller 31 and the second roller 32 serves to smooth the mylar tape attached to the first and third sides of the display device. Preferably, the first roller 31 and the second roller 32 are flexible silicone wheels, so that damage to the surface of the display device caused by the rollers can be prevented.

The interval between the first roller 31 and the second roller 32 of the second leveling mechanism 3 of the mylar adhesive tape attaching jig provided by the embodiment of the utility model can be controlled and regulated by the air cylinder, so that the mylar adhesive tape attaching jig can adapt to leveling of mylar adhesive tapes of display devices with different thicknesses.

Referring to fig. 2-3, the attaching jig of the mylar tape further includes a supporting mechanism 4, where the supporting mechanism 4 includes a first supporting rod 41, a second supporting rod 42 and a fixing plate 43, the first supporting rod 41 is disposed on one side of the base 21 of the first leveling mechanism 2, the second supporting rod 42 is disposed on the other side of the base 21, and the fixing plate 43 is disposed between the first supporting rod 41 and the second supporting rod 42.

Further, a plurality of air holes 430 are formed in the upper surface of the fixing plate 43, a vent pipe connected to the plurality of air holes 430 is formed in the lower surface of the fixing plate 43, and negative pressure is applied to the vent pipe, so that the display device can be adsorbed to the fixing plate 43 through the plurality of air holes 430.

Further, the first support bar 41 is provided with a first U-shaped groove 410, and the first screw 411 may connect the first support bar 41 with one side of the fixing plate 43 through the first U-shaped groove 410; the second support bar 42 is provided with a second U-shaped groove (not shown) through which a second screw (not shown) may connect the second support bar 42 with the other side of the fixing plate 43. Preferably, graduation marks are provided in the first and second U-shaped grooves 410 and 42 to assist the first and second screws 411 and 42 to set the first and second support bars 41 and 42 at the same horizontal position of the side plate of the fixing plate 43. The first screw and the second screw may be of a bolt structure.

Further, fig. 4 is a side view of the support mechanism of the mylar adhesive tape attaching jig provided in the first embodiment of the present utility model above the second leveling mechanism, please refer to fig. 4, the included angle between the first support bar 41 and the fixing plate 43 may be adjusted, the included angle between the second support bar 42 and the fixing plate 43 may be adjusted, and the included angle between the first support bar 41 and the base 21 may be adjusted, so that the support mechanism 4 may not only set the display device on the first leveling mechanism 2 for operation (please refer to fig. 2 and 3), but also set the display device on the second leveling mechanism 3 for operation (please refer to fig. 4).

Fig. 9 is a flowchart of mylar attachment provided in the first embodiment of the present utility model, please refer to fig. 9, when a mylar tape 61 is attached to a part of the first surface of the display device 60, the display device 60 is moved to the upper side of the first leveling mechanism 2, and the display device 60 is moved along one side of the leveling portion 22 (please refer to a in fig. 9); when the display device 60 moves to the bottom of the pacifier 22, the pacifier 22 and the sides of the display device 60 are parallel (see b in fig. 9); continuing to move the display device 60 toward the other side of the pacifying portion 22, when the display device 60 moves to the top end of the other side of the pacifying portion 22 (see c in fig. 9), the mylar tape of the side of the display device 60 can be pacified. When the side surface of the display device 60 is completely smoothed, the display device 60 is moved above the second smoothing mechanism 3, and the display device 60 is moved vertically from the gap between the first roller 31 and the second roller 32 (see d in fig. 9), whereby smoothing of the mylar tape on the first and third surfaces of the display device 60 can be completed.

Fig. 10 is a side view of a mylar adhesive tape attaching jig according to a second embodiment of the present utility model, referring to fig. 10, in which the mylar adhesive tape attaching jig according to the second embodiment is different from the mylar adhesive tape attaching jig according to the first embodiment in that the leveling portion 22' of the first leveling mechanism 2 of the mylar adhesive tape attaching jig is an arc-shaped protrusion that is curved upward. When the display device is placed on the leveling part 22 'after the Mylar tape is attached to the upper surface of the display device, the Mylar tape can be flatly attached to the side surface of the display device along with the continuous movement of the display device on the leveling part 22'.

Further, the outer wall of the pacifying portion 22' is provided with a flexible material such as silica gel, which has an advantage of preventing the side of the display device from causing abnormal products when pacifying.

Fig. 11 is a flowchart of the mylar tape attaching according to the second embodiment of the present utility model, please refer to fig. 11, when the mylar tape 61 is attached to a part of the first surface of the display device 60, the display device 60 is moved to the upper side of the first leveling mechanism 2, and the display device 60 is moved along one side of the leveling portion 22' (please refer to a in fig. 11); when the display device 60 is moved to the top of the pacifier 22', the pacifier 22' and the sides of the display device 60 are parallel (see b in fig. 11); continuing to move the display device 60 toward the other side of the pacifier 22', the mylar tape on the side and third face of the display device 60 may be pacified as the display device 60 moves to the other side of the pacifier 22' (see c in fig. 11). When the side surface of the display device 60 is completely smoothed, the display device 60 is moved above the second smoothing mechanism 3, and the display device 60 is moved vertically from the gap between the first roller 31 and the second roller 32 (see d in fig. 11), whereby smoothing of the mylar tape on the first and third surfaces of the display device 60 can be completed. The smoothing portion 22' of the first smoothing mechanism 2 to which the mylar tape is attached provided in the present embodiment is an arc-shaped protrusion curved upward, and when the mylar tape of the display device is smoothed, smoothing of the mylar tape other than the side is more advantageous to smoothing of the mylar tape of the third side.

According to the attaching jig for the Mylar adhesive tape, provided by the embodiment of the utility model, the rotating part is arranged on the attaching mechanism, so that a person can conveniently rotate the attaching mechanism when attaching the Mylar adhesive tape, and the rotation of a display device can be realized; by arranging the first smoothing mechanism, smoothing of the side surface of the display device can be better realized; by arranging the second smoothing mechanism, the Mylar adhesive tape on the first surface and the third surface of the display device can be smoothed; the embodiment of the utility model is also provided with the supporting mechanism which can adsorb the display device, so that the display device can be moved to the position above the first smoothing mechanism or the second smoothing mechanism more conveniently to finish the attachment of the Mylar adhesive tape.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. An attaching jig of mylar adhesive tape, which is characterized by comprising:

the device comprises an attaching mechanism (1), wherein a rotating mechanism (12) is arranged on the attaching mechanism (1), and the rotating mechanism (12) can drive the attaching mechanism (1) to rotate;

the first smoothing mechanism (2) is arranged on one side of the attaching mechanism (1), the first smoothing mechanism (2) is provided with smoothing parts (22, 22 '), and cambered surfaces are arranged on the smoothing parts (22, 22') and are used for smoothing Mylar tapes attached to the side surfaces of the display device;

the second is smooth mechanism (3) set up first smooth mechanism (2) keep away from one side of attaching mechanism (1), second is smooth mechanism (3) are provided with first gyro wheel (31) and second gyro wheel (32), and is parallel each other clearance between first gyro wheel (31) with second gyro wheel (32) is used for smooth the attached mylar tape of display device first face and third face.

2. The attaching jig of a mylar tape according to claim 1, wherein the attaching mechanism (1) further comprises a base (11), a supporting table (13) and a carrying plate (14), a fixing seat (110) is arranged on the base (11), one end of the rotating mechanism (12) is connected with the fixing seat (110), the other end of the rotating mechanism (12) is connected with the supporting table (13), and the carrying plate (14) is arranged on the supporting table (13).

3. The attaching jig of a mylar tape according to claim 2, wherein the carrier plate (14) comprises a first carrier plate (141) and a second carrier plate (142), and the first carrier plate (141) and the second carrier plate (142) are arranged in parallel.

4. The attachment jig of mylar tape according to claim 1, characterized in that the first smoothing mechanism (2) comprises a base (21), the smoothing portion (22, 22') being provided on the base (21).

5. The attachment jig for a mylar tape according to claim 4, wherein the smoothing portion (22) is an arc-shaped groove curved downward.

6. The jig for attaching a mylar tape as defined in claim 4, wherein said smoothing portion (22') is an arc-shaped protrusion curved upward.

7. The attaching jig of mylar tape according to claim 1, wherein the second smoothing mechanism (3) further comprises a connecting frame (30), the connecting frame (30) comprises a cross bar (301), a first vertical bar (302) and a second vertical bar (303), the first vertical bar (302) and the second vertical bar (303) are respectively and vertically arranged at two ends of the cross bar (301), the first roller (31), the second roller (32) and the cross bar (301) are arranged in parallel, one ends of the first roller (31) and the second roller (32) are arranged on the first vertical bar (302), and the other ends of the first roller (31) and the second roller (32) are arranged on the second vertical bar (303).

8. The attaching jig of mylar tape according to claim 7, wherein a first cylinder (30211) and a second cylinder (30212) are respectively provided at both ends of a first cavity (3021) of the first vertical rod (302), a third cylinder (30311) and a fourth cylinder (30312) are respectively provided at both ends of a second cavity (3031) of the second vertical rod (303), the first cylinder (30211) and the third cylinder (30311) control the first roller (31) to be displaced toward the second roller (32) in a first direction, and the second cylinder (30212) and the fourth cylinder (30312) control the second roller (32) to be displaced toward the first roller (31) in the first direction.

9. The mylar tape attachment jig of claim 1, further comprising:

supporting mechanism (4), including first bracing piece (41), second bracing piece (42) and fixed plate (43), first bracing piece (41) set up one side of base (21) of first smooth mechanism (2), second bracing piece (42) set up the opposite side of base (21), fixed plate (43) set up first bracing piece (41) with between second bracing piece (42).

10. The attaching jig for a mylar tape according to claim 9, wherein a plurality of air holes are provided on an upper surface of the fixing plate (43), a vent pipe connecting the plurality of air holes is provided on a lower surface of the fixing plate (43), and negative pressure in the plurality of air holes adsorbs the display device on the fixing plate (43).