KR100530599B1 - A sheet bonding apparatus for manufacturing of back-light - Google Patents

Abstract

The present invention is a bonding device for bonding the light guide plate and the reflective sheet for manufacturing the backlight, the present invention is a light guide plate is loaded on the upper surface, the first support for vacuum-suction the loaded light guide plate, and the sheet is continuously separated from the base film A first sheet picker for absorbing and picking up the sheet separating means and the sheet separated by the sheet separating means, transferring the picked sheet to a light guide plate loaded on the first support, and the first sheet picker A guide rail for guiding the movement of the first sheet picker when transferring the sheet, and first alignment means for aligning the sheet conveyed by the first sheet picker to a position corresponding to the light guide plate loaded on the first support. Automated bonding of the light guide plate and the reflection sheet makes it possible to perform a quick operation with almost no defect rate due to inaccurate manual work. It is possible to maximize the productivity of the backlight to step.

Description

A sheet bonding apparatus for manufacturing of back-light

The present invention relates to a sheet bonding apparatus for manufacturing a backlight, and in particular, to automate the bonding operation of the light guide plate and the reflective sheet, there is almost no defect rate due to inaccurate manual work, and is suitable for maximizing the productivity of the backlight due to quick operation. It relates to a sheet bonding apparatus.

In general, liquid crystal displays (hereinafter, referred to as LCDs) have very low power consumption and are thin and light, so they are rapidly being developed and distributed in recent years, but they are not able to emit light by themselves. In the transmissive and transflective LCDs used as a back light, a backlight is used as a light source.

1 is an assembly view showing the configuration of the backlight.

As shown, the backlight includes a light guide plate 103 for uniformly diffusing light to the LCD for a black and white LCD, and a reflective sheet 101 which reflects the lost light and supplies it back to the LCD. In addition to the light guide plate 103 and the reflection sheet 101 for the color LCD, a diffusion sheet 105 for diffusing and scattering light onto the LCD and a prism sheet for collecting light by bands 107 and prism Sheet) is further included, in addition to the curtain 109, the light source 113 and the mold frame 111 is included.

In the backlight configured as described above, the operation of bonding the light guide plate 103 and the reflection sheet 101 to the color LCD and the black and white LCD is essential.

However, in the related art, since the bonding operation is performed only by the manual operation of the operator, a tilting phenomenon in which the bonding position of the light guide plate 103 and the reflection sheet 101 does not match frequently occurs. In order to precisely join 101) by hand, there was a problem that rapid work itself was difficult.

Therefore, the defective rate of a product became very high and the productivity fell.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is to automate the bonding operation of the light guide plate and the reflective sheet, there is almost no defect rate due to inaccurate manual work for backlight manufacturing To provide a sheet bonding device.

In order to achieve the above object, a sheet bonding apparatus for manufacturing a backlight according to the technical spirit of the present invention includes: a first support for vacuum-absorbing a loaded light guide plate when the light guide plate is loaded on an upper surface thereof, and continuously separating the sheet from the base film. A first sheet picker for absorbing and picking up the sheet separating means and the sheet separated by the sheet separating means, transferring the picked sheet to a light guide plate loaded on the first support, and the first sheet picker A guide rail for guiding the movement of the first sheet picker when transferring the sheet, and first alignment means for aligning the sheet conveyed by the first sheet picker to a position corresponding to the light guide plate loaded on the first support. It is characterized by its technical configuration.

Here, when the sheet is spaced apart from the first support by a predetermined distance around the pick-up position of the sheet, and the light guide plate is loaded on the upper surface, the second support for vacuum suction of the loaded light guide plate, and the sheet separated by the sheet separating means A second sheet picker which is alternately absorbed and picked up by the first sheet picker, and which is transported while being guided by the guide rail and bonded to the light guide plate loaded on the second support, by the second sheet picker; It is preferable to further include a second alignment means for aligning the transferred sheet to a position corresponding to the light guide plate loaded on the second support.

In addition, the sheet separating means, the support plate, and the film supply roller which is installed on one side of the support plate, the base film adhered to the sheet is inserted into a wound form, and sequentially unwind the wound base film, and the A sheet separating plate installed on one side of the support plate, the sheet separating plate separating the sheet from the base film by bending the base film being unwound from the film supply roller in a downward direction by a predetermined angle, and the film supply roller on one side of the support plate. It may be installed at a predetermined distance, and may include a film collecting roller for winding and collecting the base film is separated by the sheet separating means, and a first motor for providing a rotational force to the film collecting roller.

In addition, the sheet picker may include a main body moving along the guide rail and a picker head which is lowered from the main body when the sheet is picked up and the picked sheet is bonded to the light guide plate.

In addition, it is preferable that the side end jig and the rear end jig of the light guide plate for holding the loading position on the upper surface of the support.

In addition, the alignment means is installed on the upper side of the support, the side pusher and rear end pusher for pushing the side end and the rear end of the sheet conveyed by the sheet picker, respectively, and the pneumatic cylinder for advancing the side end pusher and the rear end pusher, respectively It may be to include.

In addition, the guide track is installed in the lower portion of the support so as to move the support in a horizontal direction orthogonal to the movement direction of the sheet picker, and is inserted into the support so as to guide the movement of the support and both ends of the It is preferable to further include a slide rod that is fixed to the side wall of the guide track.

In addition, the second sheet picker is coupled to the first sheet picker at a predetermined interval, and a pneumatic cylinder coupled to the first sheet picker for horizontal movement of the first sheet picker and the second sheet picker is installed. It is preferable.

Hereinafter, embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

The present invention is configured so that the reflective sheet is separated one by one from the base film to which the reflective sheet is continuously bonded without the manual labor of the operator, and the reflective sheet thus separated can be accurately bonded to the light guide plate without tilting.

Hereinafter, the configuration of the sheet bonding apparatus for manufacturing a backlight according to the present invention will be described in detail.

2A is an elevation view of a sheet bonding apparatus for manufacturing a backlight according to the present invention, FIG. 2B is a reference elevation view for explaining the movement of the alignment means and the sheet picker of the present invention, and FIG. 3 is a sheet bonding apparatus for manufacturing a backlight according to the present invention. Front view.

As shown, the present invention provides a support frame 1, a first support 3a and a second support 3b, a sheet separating means 4, a first sheet picker 5a and a second sheet picker. And a first alignment means and a second alignment means provided with a 5b, a guide rail 8, side pushers 15a and 17a and rear pushers 15b and 17b.

Here, the support frame (1) is to support the other components that are formed and installed as a top frame connecting the upper and left pillars standing on the left and right, and the left and right pillars.

In addition, the first support 3a and the second support 3b are spaced apart from each other by a predetermined distance and installed on both left and right sides.

Here, when the light guide plate is loaded on the upper surface by the operator on the first support 3a and the second support 3b, a vacuum lake (not shown) is connected to the upper surface so that the loaded light guide plate can be vacuum-adsorbed, and the vacuum lake is connected. A plurality of small vacuum suction holes are formed on the upper surface.

In addition, side end jigs 13a and 14a and rear end jigs 13b and 14b are disposed at right angles on the upper surfaces of the first support 3a and the second support 3b to accurately position the light guide plate. Is installed.

Thus, when the operator places the light guide plate on the first support 3a and the second support 3b, the side end and the rear end of the light guide plate are placed on the side end jig 13a, 14a and the rear end jig 13b, 14b, respectively. By contacting and restraining it is possible to load the light guide plate in the correct position.

In addition, the sheet separating means (4) is installed vertically in the front and rear direction from the center of the support frame (1), continuously separating the sheet (reflective sheet) from the base film to the center portion of the support frame (1) Supply. However, the sheet separating means 4 will be described later in detail.

In addition, the first sheet picker 5a and the second sheet picker 5b are movably coupled to the guide rails 8 whose upper ends are connected across the left and right upper ends of the support frame 1. The sheet picker 5a and the second sheet picker 5b may be moved left and right while being guided by the guide rail 8.

Here, the first sheet picker 5a and the second sheet picker 5b are coupled to be spaced apart from each other by a predetermined interval, and the interval is different from the sheet picker when one sheet picker picks up the sheet. The light guide plate loaded on the sheet and the sheet picked up first should be spaced at the same time.

As such, if the distance between the first sheet picker 5a and the second sheet picker 5b is always kept the same, only the first sheet picker 5a or the second sheet picker 5b may be moved. Only one pneumatic cylinder needs to be provided.

As shown, the first pneumatic cylinder 6 is installed on the left side of the support frame 1, and the arm 7 of the first pneumatic cylinder 6 is connected to the first sheet picker 5a. In addition, it can be seen that the second sheet picker 5b is coupled to the first sheet picker 5a by a predetermined coupling rod to be maintained at a predetermined interval.

Thus, even if only one first pneumatic cylinder 6 is provided, both the first sheet picker 5a and the second sheet picker 5b can be moved.

However, in the present invention, the first sheet picker 5a and the second sheet picker 5b are not limited to move by only one pneumatic cylinder, but include the other pneumatic cylinder and include the first sheet picker 5a. And the second sheet picker 5b can be individually configured to be movable sideways.

In addition, briefly examining the configurations of the first sheet picker 5a and the second sheet picker 5b itself, the first sheet picker 5a and the second sheet picker 5b may be formed along the guide rails 8, respectively. It comprises a moving body (9a, 9b) and the picker head (11a, 11b) to move up and down in the body (9a, 9b).

Here, the picker heads 11a and 11b pick up the sheets separated from the base frame and bond the picked sheets to the light guide plate by the main body 9a and 9b by a servo motor or a pneumatic cylinder not shown. As a result, a plurality of suction holes connected to the vacuum lake are formed in the lower surface thereof to adsorb the sheet.

As a result, the first sheet picker 5a and the second sheet picker 5b suck and pick up the sheet separated from the base frame by the sheet separating means 4, and transfer the picked sheet to transfer the picked sheet. 3a) and the light guide plate loaded on the second support 3b.

As such, when the first sheet picker 5a and the second sheet picker 5b are provided at the same time, the sheet separated from the base film by the sheet separating means 4 is separated from the first sheet picker 5a and the second sheet picker 5b. The sheet picker 5b is alternately picked up and quickly bonded to the light guide plate loaded on the first support 3a and the second support 3b, respectively.

Further, the first and second alignment means are provided with both side pushers 15a and 17a and rear pushers 15b and 17b, respectively. Here, the side pushers 15a and 17a are connected to pneumatic cylinders 19a and 19b respectively installed on the left and right sides of the support frame 1, and the rear pushers 15b and 17b are also left and right of the support frame 1. In connection with the pneumatic cylinder (not shown) installed on the rear side.

Thus, when the sheet picked up by the first sheet picker 5a and the second sheet picker 5b is conveyed over the first support 3a and the second support 3b, the transferred sheet is transferred to the sheet picker. The side pushers 15a and 17a and the rear pushers 15b and 17b advance and retreat, respectively, in the state of being adsorbed by 5a and 5b to thereby hold the correct position of the sheet. Here, the accurate position means a position that can be exactly matched with the light guide plate already loaded on the first support 3a and the second support 3b.

 On the other hand, the first support (3a) and the second support (3b) is configured to move a predetermined distance back and forth for position adjustment with the sheet picker (5a, 5b).

To this end, the guide tracks 21a, which are installed below the support 3a, 3b, to move the support 3a, 3b a predetermined distance in a horizontal direction perpendicular to the moving direction of the sheet pickers 5a, 5b. 21b and slide rods 22a and 22b for guiding the movement of the supports 3a and 3b when the supports 3a and 3b move within the guide tracks 21a and 21b.

Here, the slide rods (22a, 22b) are fitted to the support (3a, 3b), both ends are fixed to the front and rear both side walls of the guide track (21a, 21b).

In addition, screws 25a and 25b for advancing and supporting the supports 3a and 3b are provided to penetrate the front side walls of the guide tracks 21a and 21b to facilitate rotation of the screws 25a and 25b. 25a and 25b are installed at the front protruding ends of the screws 25a and 25b.

Hereinafter, the sheet separating means 4 briefly mentioned above will be described.

4 is an elevation view of the sheet separating means according to the present invention.

As shown, the sheet separating means 4 of the present invention includes a support plate 41, a film feed roller 43, a sheet separating plate 45, a film collecting roller 47, and a first motor. It comprises 53.

Here, the support plate 41 is for the installation and support of the other components are installed vertically to save the installation area. In addition, a lower portion of the support plate 41 is provided with a predetermined base (not shown) for supporting the support plate 41.

In addition, the film feed roller 43 is installed on the upper side of the support plate 41, the sheet is bonded to the base film is fitted in the form wound on the film feed roller 43. As a result, the film supply roller 43 is able to sequentially release the wound base film while rotating.

Here, the film supply roller 43 is preferably provided with bearings such as ball bearings so as to smoothly rotate even by a small force. As a result, when the base film is pulled by the rotation of the film collecting roller 47 which finally collects the released base film, the film supply roller 43 smoothly rotates and the break of the base film is prevented.

In addition, the sheet separation flat plate 45 is a flat plate installed horizontally below one side of the support plate 41, and serves to bend a predetermined angle sharply downward while the base film contacts the tip.

As such, when the base film is sharply bent by the sheet separating plate 45 at the time of movement, the sheet that is weakly bonded to the upper surface of the base film does not bend together with the base film while maintaining a linear motion from the base film. Are separated.

Here, it can be seen that it is sufficient if the base film is sharply bent at a slight angle to separate the sheet weakly bonded to the base film from the base film.

However, when some sheets are more strongly adhered to the base film, the base film should be configured to be able to be bent at a larger angle in order to be separated from the base film without exception.

In addition, the first guide roller 51a, the second guide roller 51b, and the third guide roller 51c to smoothly move the base film from the film supply roller 43 to the film collection roller 47. ) And the fourth guide roller 51d is installed at one side of the support plate 41.

In addition, the fifth guide roller 51e is installed adjacent to the fourth guide roller 51d, and the second guide roller 51e is configured to provide a rotational force to any one of the fourth guide roller 51d or the fifth guide roller 51e. A motor (not shown) is further installed.

As a result, the base film moving from the third guide roller 51c is sandwiched between the adjacent fourth guide roller 51d and the fifth guide roller 51e so that both surfaces are in contact with each other. It is provided with a conveying force by the second motor to be smoothly conveyed toward.

On the other hand, the sheet separating means 4 may be further provided with a sensor 49 and a controller (not shown).

Here, a simple detector such as an infrared detector may be installed as the detection sensor 49, and the sheet may be installed at the tip of the sheet separation flat plate 45 to detect a sheet immediately after separation from the base film.

In addition, the controller is interlocked with the detection sensor 49, when the sheet is detected by the detection sensor 49 stops the operation of the first motor 53 to temporarily stop the movement of the base film, the detection sensor If the sheet is not detected at 49, the first motor 53 is operated to move the base film by one sheet distance.

As a result, the sheet separating means 4 separates the sheet from the base film at a speed of picking up the separated sheets of the first sheet picker 5a and the second sheet picker 5b.

The operation of the sheet bonding apparatus for manufacturing a backlight according to the present invention configured as described above will be described in detail with reference to the accompanying drawings including FIGS. 5A to 5D for explaining the operation of the sheet picker.

First, when the first motor 53 is operated, the film collection roller 47 connected to the rotating shaft of the first motor 53 is rotated, and at the same time to the film collection roller 47 by the base film f1. The connected film feed roller 43 is also rotated. As a result, the base film f1 wound around the film feed roller 43 is released from the film feed roller 43 to reach the sheet separation flat plate 45.

Then, the sheet (s) bonded to the upper surface of the base film (f1) while the base film f1 reached to the sheet separation plate (45) is bent sharply downward by the sheet separation plate (45). Is separated. At this time, the sheet s to be separated protrudes to the front end of the sheet separation flat plate 45 before being completely separated from the base film f1.

At this time, as shown in FIG. 5A, the first sheet picker 5a moves to the center pickup area along the guide rails 8, and then the picker head 11a is lowered and raised to vacuum the separated sheet s. Pick it up.

In this way, when the first sheet picker 5a picks up the sheet s, the first sheet picker 5a is then guided by the first pneumatic cylinder 6 as shown in FIG. 5B. Therefore, it moves above the 1st support stand 3a located on the left side.

At this time, the second sheet picker 5b moves to the center pickup area along the guide rail 8 while maintaining the same distance as the first sheet picker 5a. Meanwhile, the sheet s newly separated from the base film f1 by the sheet separating means 4 protrudes into the pickup area.

Subsequently, when the first sheet picker 5a is positioned above the first support 3a, the side pusher 15a and the rear pusher 15b are respectively positioned on the first support 3a. The sheet s adsorbed by the picker 5a is pushed while contacting the side and rear ends.

As a result, the sheet s adsorbed and transported by the first sheet picker 5a is aligned at a position where the sheet s accurately adhered to the light guide plate d loaded on the first support 3a.

Thereafter, the first sheet picker 5a and the second sheet picker 5b lower the respective picker heads 11a and 11b, whereby the light guide plate d and the sheet s are bonded.

In addition, the light guide plate d of the first support 3a is naturally picked up by the first sheet picker 5a which is bonded to the sheet s and maintains vacuum suction.

Thereafter, the first sheet picker 5a and the second sheet picker 5b are moved to the right by the first pneumatic cylinder 6 this time. As a result, the first sheet picker 5a is positioned at the center pickup area, and the second sheet picker 5b is positioned above the second support 3b.

At this time, the first sheet picker 5a drops the sheet s picked up and the light guide plate d bonded thereto to a region where an operator can collect them by vacuum suction release.

Further, on the upper side of the second support 3b, the side end pusher 17a and the rear end pusher 17b push the sheet s adsorbed to the second sheet picker 5b, respectively, while contacting the side end and the rear end.

As a result, the sheet s sucked and transported by the second sheet picker 5b is aligned at the correct position so that the sheet s accurately adhered to the light guide plate d loaded on the second support 3b.

Then, as shown in 5d, the new light guide plate d is loaded in its place, and a new sheet s separated by the sheet separating means 4 protrudes in the center pickup area.

 In addition, the first sheet picker 5a and the second sheet picker 5b lower the respective picker heads 11a and 11b, whereby a new sheet s is added by the first sheet picker 5a. The light guide plate d and the sheet s are bonded by the second sheet picker 5b.

Thereafter, although the drawings are omitted, similarly to FIG. 5C, the light guide plate d of the second support 3b is naturally picked up by the second sheet picker 5b which is bonded to the sheet s and is not released from vacuum suction. After being transferred to the center pick-up area by the second sheet picker 5b, the vacuum suction of the second sheet picker 5b is released and falls to the area where the worker can collect.

In the present invention, the sheet separating means 4 is separated from the sheet s continuously adhered to the base film f1 while the above operation is repeated, and the sheet s separated by the sheet separating means 4. ), The first sheet picker 5a and the second sheet picker 5b are alternately picked up, and are accurately bonded to the light guide plate d loaded on the first support 3a and the second support 3b.

On the other hand, when the detection sensor 49 is installed in the sheet separating means 4, when the sheet (s) is detected by the detection sensor 49, the operation of the first motor 53 is stopped and the base film f1 ) Is temporarily stopped, and if the sheet s is not detected by the detection sensor 49, the first motor 53 is operated to move the base film f1 by one sheet distance.

In this way, by the detection sensor 49, the processing speed of the first sheet picker 5a and the second sheet picker 5b and the processing speed of the sheet separating means 4 are properly matched to facilitate a smooth operation. It becomes possible.

The preferred embodiment of the present invention has been described above. The present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the sheet bonding apparatus for manufacturing a backlight according to the present invention can automate the bonding operation of the reflective sheet, so that there is almost no defect rate due to inaccurate manual work and can be performed quickly.

Therefore, the present invention has the effect that it is possible to improve the productivity of the product in the backlight manufacturing.

1 is an assembly view showing the configuration of a backlight;

2A is an elevation view of a sheet bonding apparatus for manufacturing a backlight according to the present invention.

Figure 2b is a reference elevation for explaining the movement of the alignment means and the sheet picker of the present invention.

3 is a front view of a sheet bonding apparatus for manufacturing a backlight according to the present invention.

4 is an elevation view of a sheet separating means according to the present invention.

5A to 5D are reference views for explaining the operation of the sheet picker.

* Description of the symbols for the main parts of the drawings *

1: Support frame 3a, 3b: 2 support

4: Sheet separating means 5a, 5b: Sheet picker

8: guide rail 13a, 13b, 14a, 14b: jig

15a, 15b, 17a, 17b: Pusher 6, 19a, 19b: Pneumatic cylinder

Claims (8)

When the light guide plate is loaded on the upper surface, the first support for vacuum suction the loaded light guide plate; Sheet separating means for continuously separating the sheet from the base film; A first sheet picker for absorbing and picking up the sheet separated by the sheet separating means and transferring the picked sheet to a light guide plate loaded on the first support; A guide rail for guiding movement of the first sheet picker when the first sheet picker transfers the sheet; And a first alignment means for aligning the sheet conveyed by the first sheet picker to a position corresponding to the light guide plate loaded on the first support. The method of claim 1, A second support that is spaced apart from the first support by a predetermined distance with respect to the pick-up position of the sheet, and when the light guide plate is loaded on the upper surface, vacuum-loading the loaded light guide plate; A second sheet which picks up and removes the sheet separated by the sheet separating means alternately with the first sheet picker, transfers the picked sheet while being guided by the guide rail, and bonds it to the light guide plate loaded on the second support. A picker; And a second alignment means for aligning the sheet transferred by the second sheet picker to a position corresponding to the light guide plate loaded on the second support. The method of claim 1, wherein the sheet separating means, A support plate; A film feed roller installed at one side of the support plate, the base film to which the sheet is bonded is fitted in a wound form, and sequentially releasing the wound base film; A sheet separating means installed on one side of the support plate and separating the sheet from the base film by bending the base film being unwound from the film feed roller by a predetermined angle downward; A film collection roller installed at a side of the support plate at a predetermined distance from the film supply roller, and collecting and collecting the base film from which the sheet is separated by the sheet separating means; Sheet bonding apparatus for manufacturing a backlight, characterized in that it comprises a first motor for providing a rotational force to the film collection roller. The method according to claim 1 or 2, The sheet picker may include a main body moving along the guide rail, and a picker head which is lowered from the main body when the sheet is picked up and the picked sheet is bonded to the light guide plate. The method according to claim 1 or 2, The side bonding jig and rear end jig of the light guide plate for holding the loading position on the upper surface of the support further comprises a sheet manufacturing apparatus for backlight. The method according to claim 1 or 2, The alignment means includes a side end pusher and a rear end pusher installed at an upper side of the support and push the side end and the rear end of the sheet conveyed by the sheet picker, respectively, and a pneumatic cylinder for advancing the side end pusher and the rear end pusher, respectively. Sheet bonding apparatus for manufacturing a backlight, characterized in that. The method according to claim 1 or 2, A guide track installed below the support to move the support a predetermined distance in a horizontal direction orthogonal to the movement direction of the sheet picker, and fitted to the support so as to guide the movement of the support, and both ends of the guide track. Sheet bonding apparatus for manufacturing a backlight further comprises a sliding rod is fixed to the side wall of the. The method of claim 2, The second sheet picker is coupled to the first sheet picker at a predetermined interval, and a pneumatic cylinder coupled to the first sheet picker is installed for horizontal movement of the first sheet picker and the second sheet picker. Sheet bonding apparatus for manufacturing a backlight.