KR101042885B1 - Pre-align apparutus for inspecting of sheet film - Google Patents

Abstract

PURPOSE: An aligning device for inspecting a sheet film is provided to lower the inspection defects of a sheet film used for a monitor by maintaining the high-quality of the sheet film. CONSTITUTION: An aligning device(11) for inspecting a sheet film comprises four clamping support plates(206), clamp rollers(202), and clamp supports(201). The clamping support plates are placed on four sides of a sheet film. The clamp rollers are formed on the top of the clamping support plates and are composed of two free rollers and two fixed rollers. The clamp rollers clamp the sheet film placed on the clamping support plates. The clamp supports are connected to the top of the clamp rollers through roller posts(205). Clamp up-down cylinders(207) are connected to both sides of the clamp supports.

Description

Aligner for sheet film inspection {PRE-ALIGN APPARUTUS FOR INSPECTING OF SHEET FILM}

The present invention relates to an alignment apparatus for inspecting sheet film, and more particularly, to an alignment apparatus for aligning the sheet film to maintain the flatness of the sheet film before inspecting whether the sheet film is defective.

LCD (Liquid Crystal Display) uses birefringence of liquid crystal, so polarizing film is used to control the vibration direction of light incident on liquid crystal molecules, and prism film, aluminum deposition film, diffusion film, electronic material protection for monitor or liquid crystal Various films such as films and coating films are used.

Various films used in such electronic products may generate minute scratches due to the frictional force of the roller in the manufacturing process of the film, and may cause kuniku due to minute deformation or damage.

As described above, when an error such as a Kunic or a scratch occurs in the film, a fatal defect that causes staining on the screen may be generated when driving a screen such as a monitor.

Therefore, the defect of the film is inspected in advance and attached to the product, but in the past, the operator checks the naked eye directly and performs the inspection. However, when the operator inspects the large polarizing film as in the prior art, Accordingly, there is a problem in that inspection accuracy and productivity are lowered.

In order to improve these problems, film inspection apparatuses for inspecting defects of films have been recently developed. As an example, Korean Patent Publication No. 10-0789659 discloses a polarizing film inspection apparatus and method.

The polarizing film inspection apparatus disclosed in Korean Patent Publication No. 10-0789659 is provided with an alignment device having a plurality of alignment members spaced at four sides of the polarizing film in order to align the polarizing film installed and placed on one side of the body. And a carrier having a plurality of grippers for adjusting tension by holding four sides of the polarizing film aligned by the aligner, and a polarizing film installed on one side of the loading part and conveyed by the polarizing film held in the carrier. A line for scanning the area scan and an area scan camera, respectively, an inspection unit, a carrier transfer for transporting the carrier to the inspection unit when the carrier is installed on the body and the carrier holds the polarizing film flat in the loading unit, and the polarizing film introduced into the loading unit The polarizing film to allow the carrier to be gripped by adsorbing the polarizing film aligned by the aligner. It is provided with a vacuum plate is formed on the side of the vacuum plate and a plurality of air holes are formed on the lower side of the aligner for lowering the lifting member for raising and lowering the vacuum plate.

The polarizing film inspection apparatus disclosed in Korean Patent Publication No. 10-0789659 uses a vacuum plate, an aligner, and a plurality of gripper devices to align the polarizing film before inspecting the inspection unit.

However, in the case of a polarizing film or a general film, the flatness of the film becomes a very important factor to inspect the defect of the film, but the gripper device grips the four sides of the film to add tension, and the gripper is held by the gripper. The film itself has a problem of being damaged, and if it is gripped in four directions and the tension is applied to the front, rear, left, and right sides, the film is stretched according to the tension force, and the film itself remains completely flat. The film does not have a problem that wrinkles occur, and the defect inspection of the film is not made properly.

KR 10-0789659 B1 (2007.12.31)

The present invention has been made to solve the above problems, in providing a film inspection apparatus that can inspect whether or not the sheet film used in the monitor, etc., to maintain the flatness of the sheet film before the defect inspection of the sheet film It is to provide an alignment device of the sheet film for.

Alignment apparatus for inspecting a sheet film according to the present invention for solving the above problems is, four clamping support plate on which the outer surface of the four sides of the inspection sheet film is placed; A clamp roller formed on an upper side of each of the four clamping support plates, comprising two free rollers free to rotate and two fixed rollers fixed to the rotation, and clamping the sheet film placed on the clamping support plate by lowering; ; A clamp up-down cylinder is connected to an upper side of each of the four clamp rollers via a roller post, and a clamp up-down cylinder for lowering the first to fourth clamp rollers is connected to both sides, and a clamp for moving the clamping support plate and the clamp roller back and forth in the center. And a clamp support on which the front and rear cylinders and the film tension cylinder for imparting tension in the clamped state of the sheet film are mounted.

Here, the sheet film inspection alignment device is further formed with a film alignment table seated in the inner space formed by the four clamping support plate, the film alignment table, to prevent the sagging of the inspection sheet film and the sheet film A table base plate connected to the film deflection prevention table, a table base plate connected to the film deflection prevention table via a support shaft, and a lower surface of the table base plate to perform up and down of the table base plate and the film deflection prevention table. It consists of a table up-down cylinder.

Here, an opening is formed on one side of the film sag prevention table, a polarization filter is disposed above the opening, a light source for film setting is formed below the polarization filter, and a film setting is formed on the vertical upper portion of the polarization filter. The camera may be implemented to be mounted.

Here, the film sagging prevention table may be made of silicon coated or amorphous acrylic material.

Here, the clamp roller and the clamping support plate may be made of silicon coated or amorphous acrylic material.

According to the configuration of the present invention described above, by the alignment device of the sheet film for maintaining the flatness of the sheet film before the defect inspection of the sheet film by reducing the defect inspection error of the sheet film used for the monitor or the like to increase the productivity of the inspection work and the sheet It is possible to maintain the high quality of the film.

1 is a perspective view of a film inspection apparatus including an alignment apparatus for inspecting a sheet film according to the present invention.
2 is a perspective view of an alignment apparatus for inspecting a sheet film according to the present invention.
Figure 3 is a perspective view of a film clamp formed with a pre-roller of the sheet film inspection alignment device according to the present invention.
Figure 4 is a perspective view of a film clamp formed with a fixed roller of the sheet film inspection alignment apparatus according to the present invention.
5 is a perspective view and a front view of a film alignment table of the sheet film inspection alignment device according to the present invention.

Hereinafter, with reference to the accompanying drawings looks at the structure and effect of the sheet film inspection alignment apparatus according to the present invention.

The sheet film in the present invention may be a prism film, an aluminum deposition film, a diffusion film, an electronic material protective film, a coating film, a polarizing film, a release film, or the like attached to a monitor and the like, without being limited.

1 is a perspective view of a film inspection apparatus including an alignment apparatus for inspecting a sheet film according to the present invention.

As shown in FIG. 1, the film inspection apparatus 10 including the alignment device for inspecting the sheet film according to the present invention includes a control unit (not shown) including a monitor, a film alignment unit 11, and a film inspection unit 12. It is made, including.

The film alignment unit 11 is a portion for aligning the sheet film before inspection, and is formed on the upper surface of the base plate 101, and a support for supporting the inspection apparatus 10 may be installed on the lower surface of the base plate 101.

The film aligning portion 11 is equipped with the aligning plate 102 on the base plate 101, the upper portion of the aligning plate 102, 4 for clamping the inspection sheet film to be mounted on each of the four surfaces without interference. Four film clamps 104 are formed, and four film clamps 104 are formed inside the film alignment table 110 to prevent the sheet film from sagging while being up and down (Z-axis direction). The film setting camera 105 which is horizontally moved (X-axis movement) by the 106 is formed.

The film alignment unit 11 is moved back and forth (Y-axis direction) by the LM guide 103 on one side. When the sheet film is aligned, it is placed at the position shown in FIG. 1, and when the alignment of the sheet film is completed, the sheet film is moved in the Y-axis direction and moved to the position of the film inspection unit 12.

In the defect inspection of the sheet film, the area scan camera 107 and the line scan camera 108 of the film inspection unit 12 are sequentially moved by the camera fixing and guide unit 109 for line scan in the X-axis direction. In conjunction with this, the film alignment unit 11 sequentially reciprocates in the Y-axis direction.

When the sheet film aligned by the film aligning unit 11 is horizontally moved, the film inspecting unit 12 inspects the defect of the sheet film by the area scan camera 107 and the line scan camera 108 to monitor the defect on the monitor side of the control unit. Display on the screen. The area scan camera 107 and the line scan camera 108 are fixed by the camera fixing and guide unit 109 and guided during movement to be implemented to be X-axis reciprocating by an X-axis cable bare (not shown).

The inspection process will be briefly described with reference to the inspection device 10 of the present invention. First, when the film alignment table 110 is lifted upwards, the sheet film is automatically or by the operator to the film alignment table 110. The four sides of the sheet film are raised and tensioned by four film clamps 104 and tensioned to achieve flatness of the sheet film. The clamping structure and flatness implementation structure of the sheet film are described again in FIG. 2.

After the four sides of the sheet film are clamped, the film alignment table 110 is lowered again, and the film alignment unit 11 is fixed to the film inspection unit 12 with the film alignment unit 11 fixing the film by the LM guide 103. The film scan is performed by the area scan camera 107 and the line scan camera 108 in the moved and moved state. For line scan of the sheet film, the cameras 107 and 108 are moved in steps in the X-axis direction, and in conjunction with this, the film alignment unit 11 is reciprocated in the Y-axis direction to scan the entire area of the sheet film.

The scan screen is displayed on the monitor through the cameras 107 and 108 and the control unit, and the inspection result of defects such as foreign matter or bubbles finely contained in the sheet film is output from the displayed image.

Here, the film setting camera 105 may be used when the film to be inspected has an incident angle of light, such as a polarizing film or a release film.

That is, when the test object film is a polarizing film or a release film, the sheet film is cross-moved before clamping by the four film clamps 104.

The film setting camera 105 displays the image of the film on a monitor by real-time shooting, in which case the polarization filter (503 of FIG. 5) formed on one side of the film alignment table 110 and the light source for film setting (see FIG. 5). The image of the film is displayed from the high luminance region to the low luminance region by 504 and clamps and tensions the polarizing film or the release film by the four film clamps 104 at the position indicated by the low luminance region to realize flatness. .

2 is a perspective view of an alignment apparatus for inspecting a sheet film according to the present invention.

As shown in FIG. 2, the alignment device 11 for inspecting the sheet film according to the present invention includes the alignment plate 102 of the first to fourth clamps 21, 22, 23, and 24 without interfering with each other on four sides. Is formed on the phase.

The first and third clamps 21 and 23 are reciprocated in the Y-axis direction by the Y-axis guide 208a and the Y-axis guide block 209a, and the second and fourth clamps 22 and 24 are X-axis. The guide 208b and the X-axis guide block 209b are reciprocated in the X-axis direction.

Each of the first to fourth clamps 21, 22, 23, and 24 includes a clamp support 201, a clamp roller 202, a clamp back and forth cylinder 203, a film tension cylinder 204, a roller post 205, And a clamping support plate 206, a clamp up-down cylinder 207, and a clamp up-down guide bar 210.

The clamp support 201 supports the clamp roller 202 via a roller post (301 of FIG. 3 and 401 of FIG. 4). The clamp support 201 is up and down by the clamp up-down cylinder 207 and the clamp up-down guide bar 210 between the clamping support plate 206 and the clamp roller 202 in conjunction with the up-down of the clamp support 201. Up.

Each of the first to fourth clamps 21, 22, 23, and 24 is horizontally moved in the X and Y axis directions by the clamp back and forth cylinder 203, and the X and Y axes by the film tension cylinder 204. Is moved horizontally in the direction.

The clamp roller 202 is fixed by the roller post 205 and clamps the sheet film while descending by the clamp up-down cylinder 207 between the clamping support plate 206.

The clamping support plate 206 is a portion in which one surface of the sheet film is raised in a fixed state, and the clamp roller 202 descends while the sheet film is raised to clamp the sheet film.

In order to inspect the defect of the sheet film, it is very important to maintain the flatness in the fixed state of the film. When the sheet film is fixed by the grip method as in the prior art and a constant tension is applied to the four rooms, the grip film is formed on the sheet film by the grip device, causing defects in the product, and by applying a constant tension to the four rooms. The film may be stretched, and in particular, when the tension is applied from four sides in a fixed state, wrinkles may occur in the film itself, thereby making it difficult to maintain flatness.

In the present invention, four sides of the sheet film are mounted on the four clamping support plates 206 in the state where the clamping support plate 206 is fixed, and then the four clamp rollers 202 are lowered to fix the sheet film.

The flatness of the sheet film is maintained by applying tension to the sheet film in the X-axis and Y-axis directions (outward four directions) by the film tension cylinder 204 while the sheet film is fixed.

At this time, two clamp rollers of the four clamp rollers 202 are free rollers rotated about the roller shaft 302, and the remaining two clamp rollers are fixed rollers which are not rotated.

In FIG. 2, it is assumed that the first and second film clamps 21 and 22 are free rollers, and the third and fourth film clamps 23 and 24 are fixed rollers. The two rollers may be free rollers or fixed rollers, and the remaining two rollers facing the two rollers may be fixed rollers or free rollers.

When the first and second film clamps 21 and 22 are free rollers and the third and fourth film clamps 23 and 24 are fixed rollers, the sheet film is tensioned with the same force on each of four sides. The film is tensioned by four sides, and at the same time, the sheet film is unfolded by two free rollers to maintain the sheet film flatness in an optimal state.

Figure 3 is a perspective view of a film clamp formed with a pre-roller of the sheet film inspection alignment device according to the present invention, Figure 4 is a perspective view of a film clamp formed with a fixing roller of the sheet film inspection alignment device according to the present invention.

The structures of the first to fourth film clamps 21, 22, 23, and 24 illustrated in FIGS. 3 and 4 are the same as those described with reference to FIG. 2.

However, in FIG. 3, the clamp roller 201 is a free roller, and the roller shaft 302 is inserted into the roller post 301 to be fastened so that the clamp roller 201 is rotatable, and in the case of FIG. 4, the clamp roller 201. The roller shaft 402 is inserted into the roller post 401 as the fixing roller, and is fastened to be fixed by the fixing bolt 403 so that the clamp roller 201 is not rotated.

5 is a perspective view (A) and a front view (B, front view seen from the arrow VIEW) of the film alignment table of the sheet film inspection alignment device according to the present invention.

As shown in FIG. 5, the table alignment table 110 has a table up-down cylinder 507 mounted at a lower portion thereof, and a table up-down cylinder 507 is connected to the table base plate 502.

A film deflection prevention table 501 is formed on the table base plate 502, and an up-down guide block 506, a space bar 508, and a guide are disposed between the film deflection prevention table 501 and the table base plate 502. Supported with each other via the bar 509 is linked up and down.

One side of the film deflection prevention table 501 is opened so that the polarization filter 503 is mounted in the opening, and the light source 504 for setting the film is installed under the polarization filter 503, and these light source fixing brackets 505 are provided. Is fixed by.

Table 501 for preventing film sag up to the height of the clamp support plate 206 by the table up-down cylinder 507 to prevent sagging of the sheet film when the sheet film is positioned in the film alignment part 11 by manual or automatic. ) Is raised and the sheet film is placed on the film deflection prevention table 501 for alignment at the raised position.

The polarizing filter 503 and the light source 504 for film setting may be used for cross-aligning the film in the case of a special film in which the sheet film has an angle of incidence with respect to the light source, such as a polarizing film or a release film, like the film setting camera 105. have.

Parts directly contacting the sheet film, i.e., the film sagging prevention table 501, the clamp roller 202, and the clamp support plate 206, are made of an amorphous material or coated with silicon to prevent static electricity. It is used.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10 film inspection device 11 film alignment unit
12: film inspection unit 21, 22, 23, 24, 104: film clamp
101: base plate 102: alignment plate
103: LM guide 105: film setting camera
106: guide bar-block 107: area scan camera
108: line scan camera 109: camera fixed and guide
110: film alignment table 201: clamp support
202: clamp roller 203: clamp back and forth cylinder
204: film tension cylinder 205, 301, 401: roller post
206: clamping base plate 207: clamp up-down cylinder
208a: Y axis guide 208b: X axis guide
209a: Y axis guide block 209b: X axis guide block
302, 402: roller shaft 403: fixing bolt
501: film sagging prevention table 502: table base plate
503: polarization filter 504: light source for film setting
505: light source fixing bracket 506: up-down guide block
507: table up-down cylinder 508: space bar
509: Guide Bar

Claims (5)

Four clamping support plates on which outer sides of four inspection sheet films are placed;
A clamp roller formed on an upper side of each of the four clamping support plates, comprising two free rollers free to rotate and two fixed rollers fixed to the rotation, and clamping the sheet film placed on the clamping support plate by lowering; ;
A clamp up-down cylinder is connected to an upper side of each of the four clamp rollers via a roller post, and a clamp up-down cylinder for lowering the first to fourth clamp rollers is connected to both sides, and a clamp for moving the clamping support plate and the clamp roller back and forth in the center. And a clamp support on which the front and rear cylinders and the film tension cylinder for imparting tension in the clamped state of the sheet film are mounted. The method of claim 1,
The sheet film inspection alignment device is further formed with a film alignment table seated in the inner space formed by the four clamping support plate,
The film alignment table may include a table for preventing the deflection of the sheet film for inspection and a film deflection prevention table on which the sheet film is placed, a table base plate connected to the film deflection prevention table via a support shaft, and a table base plate. And a table up-down cylinder which is connected to a lower surface and performs up and down of the table base plate and the film sag prevention table. The method of claim 2,
An opening is formed on one side of the film sag prevention table, and a polarizing filter is disposed on the opening.
A light source for film setting is formed under the polarization filter.
Alignment apparatus for inspecting the sheet film, the film setting camera is mounted on the vertical upper portion of the polarizing filter. The method of claim 2,
The film deflection prevention table is silicon coated, or an amorphous device for the sheet film inspection alignment device. The method of claim 1,
And the clamping roller and the clamping support plate are made of silicon coated or amorphous acrylic material.

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