KR101242231B1 - Apparaus for supplying the fpcb adhesion sheet for back light unit - Google Patents

Abstract

PURPOSE: An apparatus for supplying an FPCB adhesion sheet for a back light unit is provided to quickly and accurately adhere an adhesive sheet to the edge of a frame mold. CONSTITUTION: A sheet supply unit(110) supplies an adhesion sheet(13b) formed on an upper table(114) to an absorption block(131). A sheet alignment unit(120) arranges the position of the adhesion sheet. An operating unit(130) supplies the adhesion sheet to attach the adhesion sheet absorbed to the adsorption block to the edge of a frame mold.

Description

 FPCB adhesive sheet attachment device for backlight unit {Apparaus For Supplying the FPCB Adhesion Sheet for Back Light Unit}

The present invention relates to an apparatus for attaching a flexible printed circuit board (FPCB) adhesive sheet for a backlight unit, and more particularly, to attach an adhesive sheet to one side edge of a frame mold disposed in a receiving groove of a main rotating plate. The present invention relates to an FPCB adhesive sheet attaching device for a backlight unit that prevents product defects by accurately performing work, and automates adhesive sheet attaching work as well as assembly of other parts.

In general, a liquid crystal display (LCD) employed in a mobile phone is equipped with a backlight unit (Back Light Unit) for diffusing light to emit light, such a backlight unit is a frame assembly 10 and an optical film 20 It consists of a combination of these.

As shown in (a) and (b) of FIG. 8, the frame assembly 10 includes a transparent light guide plate 11 mounted on the inside of the frame mold 12 having a rectangular frame, and is provided on one side of the light guide plate 11. The light emitted from the LED 13 fixed to the flexible substrate 13a is refracted into the light guide plate 11 and irradiated upward to the surface light source by the reflective film 14 attached to the bottom of the light guide plate 11. It is a system.

In addition, the upper surface of the light guide plate 11 includes a primary diffusion film 21a, a primary prism film 22a, a secondary prism film 22b, a secondary diffusion film 21b, a light shielding film 23, and the like. The optical films 20 are sequentially laminated and assembled to diffuse light emitted through the light guide plate 11 to be irradiated to the liquid crystal display (LCD).

The order of assembling the backlight unit is a frame assembly 10 consisting of a frame mold 12, a light guide plate 11, a flexible substrate 13a, a reflective film 14, and the like, and then assembled to an optical film 20 assembly line. When the workers are transported, the optical film 20 including the primary diffusion film 21a, the primary prism film 22a, the secondary prism film 22b, the secondary diffusion film 21b, and the light shielding film 23, etc. It is a system of stacking and assembling these in turn.

In addition, the flexible substrate 13a is bonded and assembled to the frame mold 12 through an adhesive sheet 13b having an adhesive layer on one side thereof, so that the operator stacks the optical films 20 sequentially. One side edge of the mold 10 must be attached to the adhesive sheet 13b before the flexible substrate 13a is adhered and assembled.

Korean Patent Publication No. 2006-0013614 (published on Feb. 3, 2006) discloses spraying anionized air on dust or dust remaining on a light guide plate before assembling by stacking optical films on a backlight primary assembly supplied to a receiving groove of a rotating plate. The present invention discloses an apparatus for realizing the automation of the assembly process by automatically removing the suction force of the air and minimizing the defect rate and then rotating the process to the next process.

However, the optical film 20 together with the light guide plate 11 is laminated on the frame mold 12 and then the adhesive sheet 13b is attached to the flexible mold 13a on one side of the frame mold before assembly. The manual work performed by the operator did not significantly increase the efficiency of the overall work, increasing productivity, but also resulted in significant labor costs, which could not increase the competitiveness of the backlight manufacturer.

In addition, when the attachment position of the adhesive sheet 13b attached to one side edge of the frame mold 12 is changed according to the skill of the operator, it not only acts as a factor in generating a product defect of the backlight unit but also in a product assembly line. There was a problem of lowering the yield.

The present invention is to solve the problems as described above, the purpose is to accurately adhere the adhesive sheet to one side of the frame mold disposed in the receiving groove of the main rotating plate to prevent the product defects, In addition to the assembly work, the present invention provides an FPCB adhesive sheet attaching device for a backlight unit that automates the adhesive sheet attaching operation.

As a specific means for achieving the above object, the present invention is arranged on one side of the main rotary plate divided by a predetermined angle by the rotational force of the servo motor and inserted into the receiving grooves of the main rotary plate on one side border An apparatus for attaching an adhesive sheet, comprising: a blade in contact with a release sheet to which the adhesive sheet is attached, and a first actuator for vertically reciprocating an upper table on which the adhesive sheet separated from the release sheet is dropped and raised, A sheet supply unit having a second actuator for horizontally reciprocating a lower table having a plurality of engaging bars disposed in the plurality of slit holes formed in the upper table, and drop-feeding the adhesive sheet placed on the upper table to an adsorption block; A sheet alignment unit having a third actuator for horizontally reciprocating the alignment table such that one side edge and the front end of the adhesive sheet mounted on the adsorption block are in contact with each other; It is provided with a swing motor for reciprocating the swinging arm connected to the lower surface of the adsorption block, and having a fourth actuator for vertically reciprocating the movable plate having the swinging motor, wherein the movable plate is assembled to slide vertically. An operation unit having a fifth actuator for horizontally reciprocating the movable base on which the guide plate is installed so as to attach the adhesive sheet adsorbed to the adsorption block to one side edge of the frame mold disposed in the receiving groove of the main rotating plate; It provides an FPCB adhesive sheet attachment device for a backlight comprising a.

Preferably, the alignment table has a contact member in contact with one side edge of the adhesive sheet at the front end to be replaceable by a plurality of fastening members.

Preferably, the third actuator has a first stopper having a touch bar in contact with a front end of the fixed base or a bracket installed thereon, the third actuator is fixed to control the moving length during the forward and backward horizontal reciprocating operation of the alignment table. .

Preferably, the adsorption block forms a plurality of adsorption holes connected to the air suction line through the upper surface so that the adsorption and fixation of the adhesive sheet aligned by the alignment table is attached to one edge of the frame mold.

Preferably, the moving plate includes a second stopper having a touch bar in contact with a tip of the moving base or a vertical bar installed therein to control the moving length during the vertical movement of the fourth actuator.

The present invention as described above has the following effects.

(1) The adhesive sheet peeled from the release paper and dropped on the upper table is transferred to the upper surface of the adsorption block, the attachment position is correctly aligned by the alignment table, and then the adsorption block is moved horizontally to the main rotating plate and to the frame mold side. By turning, it is possible to precisely and quickly attach the adhesive sheet adsorbed on the adsorption block to one side edge of the frame mold, thereby preventing defects caused by manual work and improving the workability. .

1 is a plan view showing an FPCB adhesive sheet attachment apparatus for a backlight unit according to a preferred embodiment of the present invention.
2 is a perspective view illustrating an FPCB adhesive sheet attaching device for a backlight unit according to an exemplary embodiment of the present invention.
3 (a) and 3 (b) are perspective views showing a sheet supply unit employed in the FPCB adhesive sheet attachment apparatus for a backlight unit according to a preferred embodiment of the present invention.
4 (a) to 4 (c) is an operation state diagram in the sheet supply unit employed in the FPCB adhesive sheet attachment apparatus for a backlight unit according to a preferred embodiment of the present invention.
6 is an operation state diagram in the sheet alignment unit employed in the FPCB adhesive sheet attachment apparatus for a backlight unit according to an embodiment of the present invention.
6 is an operation state diagram in the operating unit employed in the FPCB adhesive sheet attachment apparatus for a backlight unit according to an embodiment of the present invention.
7 illustrates a general backlight unit,
(a) is an exploded perspective view,
(b) is a state diagram of the bonding of the frame mold and the light guide plate.

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the backlight FPCB adhesive sheet attaching apparatus 100 according to an exemplary embodiment of the present invention may be divided into a main body at a predetermined angle by a rotational force of a servo motor (not shown). The adhesive sheet 13b which is disposed on one side of the rotating plate I 101 and is attached to one side edge of the frame mold 12 disposed in the plurality of receiving grooves 101a provided on the upper surface of the main rotating plate 101. It is disposed on one side of the main rotating plate 101 to supply and attach, and includes a sheet supply unit 110, a sheet alignment unit 120 and the operation unit 130.

The sheet supply unit 110 includes a blade 112, an upper table 114 and a lower table 116, as shown in Figures 1 to 3 (a) (b), the blade 112 The adhesive sheet 13b is disposed from the release sheet 104 which is disposed to contact the release sheet 104 to which the adhesive sheet 13b is attached and is turned in the opposite direction of the entry direction in contact with the end of the blade 112. To separate and supply the drop on the upper table 114 is waiting to be raised.

At this time, the adhesive sheet 13b dropped on the upper table 114 is raised so that the adhesive layer bonded to the frame mold faces the upper surface.

The blade 112 is preferably provided to be inclined at an angle to facilitate separation and detachment of the adhesive sheet 103b attached to the release paper 104, the release paper 104 is attached to the adhesive sheet 13b ) Is rolled up and unrolled in the unrolling roll, not shown, the release paper 104, the adhesive sheet 13b is separated while contacting the blade 112 is wound on the winding roll 111 is rotated in one direction by the motor member It is wound up by.

Then, the release paper 104 is provided between the release roll 104 and the blade 112 in contact with the pinch roll 113 to adjust the tension or by the winding operation of the winding roll 111 of the release paper to proceed in one direction of the adhesive sheet It may be provided with a clamping means (not shown) for controlling the movement by clamping or unclamping every fall.

The blade 112, the winding roll 111, the pinch roll 113 may be provided on the roll mounting plate 119 fixed to the bottom surface.

The upper table 114 is a table member in which the adhesive sheet 13b separated from the release paper 104 is dropped and placed on the upper surface, and formed through the plurality of slit holes 114b. ) Is the up and down reciprocating operation by the first actuator which is operated when the air supply through the air supply line not shown by being connected to the first actuator (114a) fixed to the fixed base 115.

The lower table 116 has a plurality of engaging bars 116b on the upper surface of the lower table 116 so as to be disposed in the plurality of slit holes 114b formed in the upper table 114, and is disposed directly below the upper table 114. The lower table 116 is connected to the second actuator 116a fixedly installed on the fixed base 115, so that the upper and lower reciprocations of the upper table are moved up and down by the second actuator 116a which is operated when the air is supplied through the air supply line. Horizontal reciprocating operation in a direction perpendicular to the direction.

Accordingly, as shown in FIGS. 4A to 4C, in the initial state in which the upper table 114 is raised, the engaging bar 116b of the lower table 116 is a slit hole 114b. Located without protruding from the outside, the adsorption block 131 is disposed to be close to the upper table 114.

In this state, the upper table 114 on which the adhesive sheet 13b falling from the release paper passing through the blade 112 is placed is coincident with the upper surface of the suction block 131 by the first actuator 114a. When lowered, the locking bar 116b of the lower table protrudes a predetermined height from the slit hole 114b of the upper table to be exposed.

At the same time, when the lower table is advanced to the suction block side by the second actuator 116a, the exposed locking bar 116b moves forward along the slit hole 114b along with the forward movement of the lower table 116, and the upper table. Interfering with the adhesive sheet placed on the upper surface of the 114 is to move to the upper surface of the adsorption block 131.

In addition, the upper and lower tables 114 and 116 are returned to the initial state by the return operation of the first and second actuators 114a and 116a so as to move the adhesive sheet that is subsequently dropped and then returned backward.

As shown in FIGS. 1 to 3 (a) and (b), the sheet alignment unit 120 is provided on one side of the sheet gong part 110 and attached to the upper surface of the adsorption block 131. Before the sheet 13a is attached to one side edge of the frame mold 12 pre-supplied to the receiving groove 101a of the main rotating plate 101, the alignment table 122 and the first table 13 may be properly aligned. And three actuators 126.

The alignment table 122 is a reciprocating operation member which is operated horizontally reciprocating so that one side edge of the adhesive sheet 13b mounted on the adsorption block 131 is in contact with the tip thereof, and the alignment table 122 is the first table. A horizontal reciprocation of the lower table is made by the third actuator 126 which is operated when the air is supplied through the air supply line, not shown, by being connected to the third actuator 126 installed on the fixed base 115 where the 2 actuators are fixedly installed. Forward and backward reciprocating operation in a direction perpendicular to the direction.

The front end of the alignment table 122 is provided with a contact member 124 in contact with one edge of the adhesive sheet 13b to be replaced by a plurality of fastening members.

One side of the third actuator 126 has a touch bar 128a having a tip contacting the fixed base 115 or a bracket 128b installed therein to control the moving length during the horizontal reciprocating operation of the alignment table. It is preferable to have a first stopper 128 having, and such a first stopper 128 may be provided to adjust the end position of the touch bar.

In addition, the sheet supply unit 110 and the sheet alignment unit 120 is fixedly installed on the vertical stand 129 vertically vertically from the bottom surface.

Accordingly, the adhesive sheet 13b mounted on the suction block 131 by the sheet supply unit 110 is aligned in position by the forward operation of the alignment table 122, as shown in FIG. .

That is, when the adhesive sheet 13b is placed on the suction block 131 in the initial state in which the alignment table 122 adjacent to the upper table 114 is reversed, the alignment table is operated by the operation of the third actuator 126. When the 122 is advanced, the contact member 124 mounted at the front end thereof moves in contact with one side edge of the adhesive sheet 13b, so that the position of the adhesive sheet 13b is properly attached to the frame mold. ) Is aligned on the top surface.

When the alignment of the adhesive sheet on the upper surface of the adsorption block 131 is completed, the alignment table is returned backward by the backward return operation of the third actuator and at the same time through the suction air line in the adsorption hole 131a. The adhesive sheet provided with the adsorption force may be fixed to the upper surface of the adsorption block 131 by the air absorption input during the completion of the adhesion.

The operation unit 130 is a suction block to attach the adhesive sheet 13b mounted on the suction block 131 to one side edge of the frame mold 12 disposed in the receiving groove 101a of the main rotating plate 101 ( 131, the swinging rock 132, the swinging motor 134, the fourth actuator 136, and the fifth actuator 138.

The adsorption block 131 is a block member on which the adhesive tape 13b moved from the upper table 114 is placed. The adsorption block 131 is connected to the end of the swivel arm 132 of a predetermined length and pivots together with the swivel arm 132. It works.

The adsorption block 131 is formed by passing a plurality of adsorption holes 131 connected to an air suction line (not shown) on the upper surface and moved from the upper table 114 by the air adsorption force generated through the adsorption holes. Thereafter, the adhesive sheet 13b positioned by the alignment table 122 is fixed to the suction sheet until it is attached to one side edge of the frame mold 12.

The swing motor 134 is a reciprocating swing of the swing arm 132 at a predetermined rotational angle when the power is applied by connecting the other end of the swing arm 133 of a predetermined length to which the suction block 131 is mounted at the tip. By operating the adsorption block 131 can be located in the vicinity of one side of the frame mold 12 disposed in the receiving groove 101a of the main rotating plate I (101) to be located in the vicinity of the upper table or divided rotation.

The fourth actuator 136 is a movable plate to which the swing motor 134 is fixed so as to operate the swing motor 134 up and down by a predetermined height together with the swing rock 132 and the suction block 131. Is connected to the 135, the movable plate 135 is assembled to slide up and down on the guide plate (135a) fixed to the upper surface of the movable base 137, the movable base 137 is fixed to the bottom surface A moving block 137c is slidably assembled to the rail 137a of the carriage 137b.

Here, one side of the moving plate 135 has a touch bar (139a) in contact with the front end of the moving base 137 or a vertical bar (139b) installed thereon to control the shanghai length when the up and down reciprocating operation of the moving plate Preferably, the second stopper 139 may be provided, and the second stopper 139 may be provided to adjust an end position of the touch bar.

The fifth actuator 138 may be provided as a drive motor for rotationally driving a screw that is screwed with the moving block of the movable base 137 slidably assembled to the rail of the carriage in a forward or reverse direction.

Here, the first, second, third and fourth actuators 114a, 116a, 126, 136 may be provided as an air cylinder reciprocating when the air supply.

Accordingly, the adhesive sheet 13b, which is aligned on the upper surface of the adsorption block 131 and fixed by adsorption by air absorption, is pivoted by the operation of the fifth actuator 138, as shown in FIG. The suction block 131 including the arm 132 is horizontally moved toward the main rotating plate.

That is, the suction block 131 moves the moving base 137 to the main rotating plate by the operation of the fifth actuator 138 connected to the moving block 138 slidably assembled to the rail of the carriage 137b. Move forward in the horizontal direction.

Subsequently, the pivoting arm 132 rotates to the upper part of the main rotary plate by the rotational driving of the pivoting motor 134, and the movable plate 135 including the pivoting arm 132 and the pivoting motor 134. ) Is lowered by the fourth actuator 136, the adhesive sheet adsorbed on the upper surface of the adsorption block 131 is pre-arranged in the receiving groove 101a of the main rotating plate 11. One side of the border of the adhesive layer is in contact can be attached correctly.

At the same time, the air absorption input provided to the adsorption hole 131a of the adsorption block 131 is stopped, and the movement is performed by the rising return operation of the fourth actuators 136 and 138 and the backward return operation of the fifth actuator 138. The base 137 is returned to the initial state, and the suction block 131 is also rotated to approach the upper table by the swing return operation of the swing motor 134.

Then, while the movable base 137 and the adsorption block 131 is returned to the initial position, the other adhesive sheet is dropped and supplied to the upper surface of the upper table, and the divided rotation of the main rotating plate 101 is performed. The operation of adhering the adhesive sheet to one side edge of the frame mold 12 may be continuously performed.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

110: sheet supply unit 111: winding roll
112: blade 114: upper table
114a: the first actuator 114b: slit ball
115: fixed base 116: lower table
116a: second actuator 116b: hook bar
120: sheet alignment unit 122: alignment table
124: contact member 126: third actuator
128: first stopper 130: operating part
131: adsorption block 131a: adsorption holes
132: turning rock: 134: turning motor
135: moving plate 136: the fourth actuator
137: mobile base 138: the fifth actuator
139: second stopper

Claims (5)

In the device for attaching the adhesive sheet to one side of the frame mold is arranged on one side of the main rotating plate divided rotation by a predetermined angle by the rotational force of the motor inserted into the receiving grooves of the main rotating plate,
A plurality of slit holes formed in the upper table, having a blade contacting the release paper to which the adhesive sheet is attached, and a first actuator for vertically reciprocating the upper table on which the adhesive sheet separated from the release paper is dropped. A seat supply unit having a second actuator for horizontally reciprocating a lower table having a plurality of engaging bars disposed in the drop table and drop-feeding the adhesive sheet mounted on the upper table to an adsorption block;
A sheet alignment unit having a third actuator for horizontally reciprocating the alignment table such that one side edge and the front end of the adhesive sheet mounted on the adsorption block are in contact with each other;
It is provided with a swing motor for reciprocating the swinging arm connected to the lower surface of the adsorption block, and having a fourth actuator for vertically reciprocating the movable plate having the swinging motor, wherein the movable plate is assembled to slide vertically. An operation unit having a fifth actuator for horizontally reciprocating the movable base on which the guide plate is installed so as to attach the adhesive sheet adsorbed to the adsorption block to one side edge of the frame mold disposed in the receiving groove of the main rotating plate; FPCB adhesive sheet attachment device for a backlight comprising a. The method of claim 1,
The alignment table is a FPCB adhesive sheet attachment device for a backlight, characterized in that the front end is provided with a contact member in contact with the edge of the adhesive sheet to be replaced by a plurality of fastening members. The method of claim 1,
The third actuator is characterized in that it comprises a first stopper having a touch bar in contact with the front end of the fixed base or the bracket installed thereon to the third actuator is fixed to control the movement length during the forward and backward horizontal reciprocating operation of the alignment table FPCB adhesive sheet attachment device for the backlight. The method of claim 1,
The adsorption block may be formed through a plurality of adsorption holes connected to the air suction line through the upper surface so that the adsorption and fixation of the adhesive sheet aligned by the alignment table to be attached to the one side border of the frame mold. FPCB adhesive sheet attachment device for backlight. The method of claim 1,
The movable plate is a FPCB adhesive sheet attachment device for a backlight, characterized in that it comprises a second stopper having a touch bar in contact with the front end of the movable base or a vertical bar installed thereon to control the moving length during the up and down operation by the fourth actuator.

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