KR102615457B1 - Polarizing film surface layer foreign matter removal device using a ceramic knife - Google Patents

Abstract

The present invention relates to a device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife. More specifically, the present invention relates to a device for removing foreign substances on the surface of a polarizing film that is generated due to a chemical reaction in a polarizing film that is stretched and transported after being treated with chemicals. In this way, the first and second knife parts are arranged diagonally on both sides of the polarizing film, and the angle of the first and second knife parts can be adjusted and moved forward and backward, so that they can be changed and used according to various conditions. It relates to a device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife.

Description

Polarizing film surface layer foreign matter removal device using a ceramic knife}

The present invention relates to a device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife that allows easy and easy removal of chemical reaction foreign substances formed on both sides of a polarizing film that has been treated with chemicals and then transported.

In recent years, as society has entered a full-fledged information age, the display field that processes and displays large amounts of information has developed rapidly, and in response to this, various flat panel display devices have been developed and are in the spotlight.

Meanwhile, these flat panel displays include various types of optical films or flexible printed circuit boards in order to express high-quality displays. Optical films include, for example, a group of films used in backlights (diffusion films, There are various types of optical films, such as prism sheets, brightness enhancement films, etc.), films used in polarizers (polarizing films, polarizer protection films), and retardation films for correcting the phase difference between the liquid crystal panel and the polarizer.

Examples of the flexible circuit board include a PCB, FPC, or FPC on which a plurality of wires are formed to electrically connect a liquid crystal panel and an external driving circuit.

These optical films or flexible circuit boards (hereinafter collectively referred to as films) have recently been unrolled from roll to roll in the form of thin, long tapes so that various processing processes can be performed during transport of the film in order to save time and cost. It is manufactured using a roll to roll method, which involves manufacturing while winding.

These films undergo various mechanical or chemical treatment processes such as etching and baking processes. If foreign substances get on the film surface during each of these processes, the performance of the film deteriorates. A process to remove is involved.

Accordingly, in order to prevent such film performance deterioration, there is a need to develop a device that can easily and easily remove foreign substances.

Republic of Korea Patent Publication No. 10-1875715 (registered on July 2, 2018)

The present invention was made to solve the above problems, and the object of the present invention is to provide a polarizing film that is gradually stretched and transferred while being transferred in one direction. When the polarizing film is transferred, it is placed in a chemical tank and chemical treatment is carried out. In order to remove various chemical reaction contaminants generated due to chemical reactions on both sides of the polarizing film, it is a removal device that allows each side to be individually removed on the transfer line. The first and second knife parts that make up the removal device are angled at an angle. The aim is to provide a device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife that can be adjusted and moved left and right to enable various uses according to various polarizing films and the user's usage conditions.

Other objects and advantages of the present invention will be explained below and will be learned by practice of the present invention. Additionally, the objects and advantages of the present invention can be realized by the means and combinations indicated in the claims.

The present invention is a means to solve the above problems,

The polarizing film 30 is immersed in a preset chemical tank 10 and then transferred in one direction while being stretched. This is to remove foreign substances generated during the chemical reaction on the surface of the polarizing film 30,

A first knife part 41 is installed so that its end is in contact with the right side of the polarizing film 30, and removes foreign substances from one side of the polarizing film 30 being transported in one direction;

A device that is installed on the opposite side of the first knife part 41 so that its end contacts the left side of the polarizing film 30, and removes foreign substances on the other side of the polarizing film 30 that is transported in one direction. 2 knife part (42);

It is characterized by consisting of.

As discussed above, the present invention has the effect of easily and easily removing foreign substances generated during a chemical reaction on the surface of a polarizing film during chemical treatment.

In addition, in the present invention, the knife part for removing foreign substances from the polarizing film has a structure that allows angle adjustment and movement back and forth to the left and right, so it has the effect of being able to be used in various ways under various conditions.

1 is a diagram showing an embodiment of a device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife according to the present invention.

Before describing the various embodiments of the present invention in detail, it will be appreciated that its application is not limited to the details of the configuration and arrangement of components described in the following detailed description or shown in the drawings. The present invention may be implemented in different embodiments, for example, “front”, “back”, “up”, “down”, “top”, “bottom”. )", "left", "right", "lateral", etc., the expressions and predicates used herein are merely used to simplify the description of the invention and are related to It will be appreciated that this does not simply indicate or imply that a device or element must have a particular orientation. Additionally, terms such as “first,” “second,” and the like are used herein and in the appended claims for purposes of description and are not intended to indicate or imply relative importance or intent.

The present invention has the following features to achieve the above object.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately use the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, so at the time of filing this application, various alternatives are available to replace them. It should be understood that equivalents and variations may exist.

Hereinafter, with reference to FIG. 1, a device for removing foreign matter from the surface layer of a polarizing film using a ceramic knife according to a preferred embodiment of the present invention involves immersing the polarizing film 30 in a preset chemical tank 10 and then transferring it in one direction while stretching it. However, it is intended to remove foreign substances generated during a chemical reaction on the surface of the polarizing film 30, and includes a first knife part 41 and a second knife part 42.

In the case of the polarizing film 30, when it is immersed in the chemical tank 10 and transported in one direction, the upper roller 21 and the lower roller 22, which contact each other up and down and rotate, contact each other and rotate. It passes through a plurality of roller units (20),

The plurality of roller units 20 are installed at different rotation speeds from the first roller unit through which the polarizing film 30 passes first to the final roller unit through which the polarizing film 30 passes, and the speed gradually increases as it moves towards the final roller unit. Thus, the polarizing film 30 is gradually stretched (stretched), and in addition to the structure and method described above, various devices may be used for stretching.

After passing through a plurality of chemical tanks 10 and a plurality of roller units 20, the polarizing film 30 is vertically transported from the bottom to the top by another auxiliary roll (R) in an upright section (A). passes through, and then the path is changed and transported horizontally for another various process. In the upright section (A) of the polarizing film 30 being transported upward, the first layer below is applied to both sides of the polarizing film 30. The knife part 41 and the second knife part 42 are installed in correspondence with each other diagonally toward the lower side in the direction opposite to the transfer direction of the polarizing film 30, so that foreign matter generated by the chemical reaction generated on the surface of the polarizing film 30 is removed. is to remove.

The first knife unit 41 is a knife device that is installed so that its end is in contact with the right side of the polarizing film 30 and removes foreign substances from one side of the polarizing film 30 that is transported in one direction,

The second knife part 42 is installed on the opposite side of the above-described first knife part 41 so that its end is in contact with the left side of the polarizing film 30, so that the polarizing film is transported in one direction ( 30) This is another knife device that removes foreign substances from the other side.

The first and second knife parts (41, 42) for this purpose include a block part (43) that is installed in a square shape and can move left and right by an air cylinder (48) installed at the bottom, and the block part (43) ) A rotating body 44 rotatably installed in the center, a fixed body fixed to the outer periphery of the rotating body 44, and a mounting groove 46 into which the knife 47 can be fitted is formed. (45) and is fitted into the mounting groove 46 to correspond to the surface of the polarizing film 30, thereby creating an angle (a) with the contact surface of the polarizing film 30 by rotation of the rotating body 44. is adjustable, and is installed to be able to slide forward and backward toward the polarizing film 30 by moving the block portion 43 left and right, and the discharge length is adjusted according to the depth of engagement with the mounting groove 46. It consists of a knife 47 made of ceramic material that can be installed.

The first and second knife parts (41, 42) are

The polarizing film 30 is installed so that the first and second knife parts 41 and 42 do not face each other so that the polarizing film 30 sequentially passes through the first knife part 41 and the second knife part 42, and is made of ceramic material. to be formed. In the present invention, in the polarizing film 30 that is transported while standing vertically, the first knife part 41 on the right side of the polarizing film 30 is installed lower than the second knife part 42 on the left side.

In addition, these first and second knife parts 41 and 42 are inclined at a preset angle (a) toward the transport direction of the polarizing film 30 and have a diagonal shape (the first knife part 41 has a diagonal line of '\'). The second knife part 42 is installed in the diagonal shape of '/' so that foreign substances on the surface of the polarizing film 30 are scraped and removed.

Of course, the width of the ends of the first and second knife parts (41, 42) in contact with the polarizing film (30) (left and right lengths, length in the width direction rather than the longitudinal direction) is equal to the width of the polarizing film (30). It is formed to have the same width, so that foreign substances can be removed from the entire width of the polarizing film 30.

In addition, the first and second knife parts 41 and 42 are respectively connected to a rotating body 44 (ex: roll, etc.), and the ends come into contact with the polarizing film 30 by the rotation of the rotating body 44. By making it possible to adjust the angle (a), the type of polarizing film 30, the thickness of the polarizing film 30, the transfer speed of the polarizing film 30, the thickness of the foreign matter formed on the polarizing film 30, and the object to be removed. The angle (a) can be adjusted differently depending on one or two or more conditions of the thickness of the foreign material.

In addition, the first and second knife parts 41 and 42 are each connected to an air cylinder 48, so that the first and second knife parts 41 and 42 simultaneously cover both sides of the polarizing film 30. It should be installed so that it can move horizontally to the left or right, narrowing towards or moving away. Of course, depending on the user's embodiment, the first and second knife parts 41 and 42 may be configured to move individually.

That is, the air cylinder 48 is connected and installed at the bottom of the first knife part 41 and the bottom of the second knife part 42, and the piston part discharged to the outside from the air cylinder 48 is the first knife part 48. , Each block part 43 of the two knife parts 41 and 42 is connected to each other by a separate connection plate 49, so that when the piston is discharged, the first and second knife parts 41 and 42 slide forward. When the piston moves backwards into the air cylinder 48, the first and second knife parts 41 and 42 slide backward.

As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and changes are possible within the scope of equivalence of the patent claims to be described.

10: Chemical tank 20: Roller unit
21: upper roller 22: lower roller
30: Polarizing film 41: First knife part
42: second knife part 43: block part
44: rotating body 45: fixed body
46: Mounting groove 47: Knife
48: air cylinder 49: connection plate
A: Upright section

Claims (9)

The polarizing film 30 is immersed in a preset chemical tank 10 and then transferred in one direction while being stretched. This is to remove foreign substances generated during the chemical reaction on the surface of the polarizing film 30,
A first knife part 41 is installed so that its end is in contact with the right side of the polarizing film 30, and removes foreign substances from one side of the polarizing film 30 being transported in one direction;
A device that is installed on the opposite side of the first knife part 41 so that its end contacts the left side of the polarizing film 30, and removes foreign substances on the other side of the polarizing film 30 that is transported in one direction. It consists of 2 knife parts (42);
The first and second knife parts (41, 42) are
The polarizing film 30 is installed so that the first and second knife parts 41 and 42 do not face each other so that the polarizing film 30 sequentially passes through the first knife part 41 and the second knife part 42, and is made of ceramic material. It is formed by
The first and second knife parts (41, 42) are
A block portion (43) installed in a square shape and movable to the left and right by the air cylinder (48) installed at the bottom;
A rotating body (44) rotatably installed at the center of the block portion (43);
A fixture 45 is fixedly installed on the outer periphery of the rotating body 44 and has a mounting groove 46 into which the knife 47 can be inserted.
By fitting and fitting into the mounting groove 46 to correspond to the surface of the polarizing film 30, the angle a with the contact surface of the polarizing film 30 can be adjusted by rotating the rotating body 44, A knife that is installed to be able to slide forward and backward toward the polarizing film 30 by moving the block portion 43 left and right, and whose discharge length is adjustable depending on the depth at which it is coupled to the mounting groove 46. (47); It consists of
The first and second knife parts (41, 42) are
By allowing the angle (a) of the end in contact with the polarizing film 30 to be adjusted, the type of polarizing film 30, the thickness of the polarizing film 30, the transfer speed of the polarizing film 30, and the polarizing film 30 are adjusted. ) The angle (a) is adjusted to be different depending on one or two or more conditions of the thickness of the foreign matter formed in,
The first and second knife parts (41, 42) are
At the same time, it is installed to be horizontally movable left and right to narrow or move away from both sides of the polarizing film 30,
The polarizing film 30 is
When submerged in the chemical tank (10) and transported in one direction, the upper roller (21) and lower roller (22) pass through a plurality of roller units (20) that contact each other and rotate,
The plurality of roller units 20 are installed at different rotation speeds from the first roller unit through which the polarizing film 30 passes first to the final roller unit through which the polarizing film 30 passes, and the speed gradually increases as it moves towards the final roller unit. Thus, the polarizing film 30 is gradually stretched,
The first and second knife parts (41, 42) are
After the polarizing film 30 passes through the chemical tank 10 and the plurality of roller units 20, the polarizing film 30 is installed in the upright section A where it is transported vertically from the bottom to the top. , the first knife part 41 and the second knife part 42 are installed diagonally on both sides of the polarizing film 30, respectively, inclined at a preset angle (α) toward the transport direction of the polarizing film 30. A device for removing foreign substances from the surface layer of a polarizing film using a ceramic knife, characterized in that foreign substances generated by a chemical reaction occurring on the surface of the polarizing film 30 are removed.
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