KR20100067910A - Blade apparatus for cleaning rolls - Google Patents

Abstract

PURPOSE: A blade device for cleaning foreign materials from a roll is provided to uniformly reduce defects in the entire film area by inhaling foreign materials which collected by blades. CONSTITUTION: A blade device for cleaning foreign materials from a roll comprises a blade(110), a suction path, and a vacuum pump(120). The blade adheres closely to the opposite side contacting a film(300) of a roll(200). The blade removes the foreign material of the roll surface. The suction path passes through the body of the blade. One side of the suction path is opened in a contact part of a roll and a blade to induce foreign material removed by the blade from the roll surface using the blades. The vacuum pump is connected through a connecting passage(130) the other side of the suction path. The vacuum pump inhales the foreign material flowing into one side of the suction path.

Description

Blade Apparatus for Cleaning Foreign Objects on Roll {Blade Apparatus for Cleaning Rolls}

The present invention relates to a blade device for removing foreign matter on a roll.

Currently, various methods are used to manufacture a polymer film, and there are largely a solution method of making a film by dissolving it in a solvent and a melting method of melting the polymer itself without a solvent into a film. In such various film manufacturing apparatus, since the polymer film is in the form of a thin film, a plurality of rolls are generally provided for smooth and stable movement of the film. Among them, a roll provided with a driving means such as a motor to directly transfer the film is called a driving roll, and a roll provided in the middle of the path for the purpose of changing the direction, guiding and supporting the film, etc. without the driving means is provided. It is called a conveyance roll.

By the way, in the case of the drive roll, in particular, when the foreign matter is deposited on the drive roll during the transfer process, the foreign matter is often transferred to the film, which often causes a defect in the finished film. In order to eliminate this problem, it is necessary to continuously clean the driving rolls during the operation of the film production apparatus.

As described above, various types of apparatuses are disclosed to continuously clean the driving roll of the polymer film manufacturing apparatus during operation.

Among these devices, the blade type device provided in the roll is most commonly used. In Japanese Patent Laid-Open No. 194-029702 (hereinafter referred to as Prior Art 1), a roll foreign matter removing device of a rolling mill is provided with a suction device in the vicinity of a blade from which foreign matter on the roll surface of a rolling mill is removed so that foreign matter removed by the blade is sucked. It is starting. In addition, US Patent Publication No. 5298953 (hereinafter referred to as Prior Art 2), one side is provided in the vicinity of the blade to remove the foreign matter on the surface of the roll and the other end is provided with an air hose provided with a blower, the foreign matter removed by the blade air Disclosed is a roll foreign matter removing apparatus of a rolling mill to be sucked and removed by a hose. In addition, FIG. 2 (D) shows that in Japanese Patent Laid-Open No. 2006-192415 (hereinafter, referred to as Prior Art 3), a dust collecting device is provided near a blade for removing foreign matter on a roll surface, and the foreign matter removed by the blade is collected by dust collecting. Disclosed is a debris removal device.

However, in the case of the prior arts 1 and 2, foreign matters removed by the blades and collected at the blade edge end are sucked only in a part of the blade, for example, a suction device (prior art 1) or an air hose (prior art 2) ( When the suction device (hereinafter referred to as a suction device) is provided at the center of the roll, foreign matters collected at the left and right end portions of the roll are difficult to be sucked into the suction device, and thus there is a problem in that defects occur on both sides of the film as in the prior art. In particular, when the film is wide, this problem is exacerbated, and even if a plurality of suction devices are provided in parallel, the same problem still occurs between the suction devices, that is, there is a problem that a defect occurrence rate varies depending on the position of the film. do.

In the case of the prior art 3 is to collect the foreign matter using the electrical properties, in this case it is impossible to remove the case of a material having a property that the foreign matter is not well charged, and also the size and weight of the foreign matter is relatively large Even if gravity becomes greater than electrostatic force, foreign matter cannot be removed effectively.

In addition, in the case of the prior art, it is necessary to additionally include a suction device or a dust collecting device as well as a blade on the surface of the roll, and as shown in the figure, the volume of each device is quite large. However, when the suction device or the dust collector is out of position as in the case where the blade is provided with the suction device or the dust collector, the vibration of the device itself or the drive of the roll, etc. occurs, the space is secured sufficiently. If not, the suction device or the dust collecting device may come into contact with the film transported along the roll, resulting in defects such as damage to the film. As described above, in the case of the prior arts, there is a problem in that the space utilization is inferior because the apparatuses additionally provided have sufficient space to be disposed.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to suck and remove the foreign matter collected by the blade through the suction passage formed throughout the blade blade, In providing a blade device for removing foreign matter.

The blade device for removing foreign matter on the roll of the present invention for achieving the object as described above is provided in close contact with the roll 200 used to transfer the film 300 is introduced from the film 300 or the outside to the roll ( In the blade device 100 for removing foreign matters on a roll for removing foreign matters attached to the 200, the roll 200 is provided on the opposite side of the contact side of the film 300 is in close contact with the surface of the roll 200 Blade 110 for removing foreign matter; Is formed through the body of the blade 110, one side of the blade 110 is in close contact with the roll 200 so that the foreign material removed from the surface of the roll 110 is introduced into the blade (110) Suction passage 111; A vacuum pump 120 connected to the other side of the suction path 111 through a connection path 130 to suck foreign substances introduced into one side of the suction path 111; And a control unit.

At this time, the suction passage 111 is characterized in that it is formed over the entire portion in close contact with the roll 200.

In addition, the blade 110 is characterized in that the blade 110 is provided in parallel with the radial direction of the roll 200.

Alternatively, the blade 110 is characterized in that the blade 110 is provided to be inclined with respect to the radial direction of the roll 200. In this case, the blade 110 is preferably provided to be inclined toward the rotation progress direction of the roll 200.

In addition, the suction passage 111 is formed in a shape in which a plurality of holes are densely arranged on the blade 110, or a rectangular hole in which a plurality of partitions 112 are provided is formed in the blade 110. Characterized in that it is formed in the form formed over the whole.

In addition, the roll 200 is characterized in that any one selected from the driving roll or the transfer roll.

According to the present invention, by effectively removing the foreign matter on the roll used for conveying the film in the polymer film production apparatus, there is a great effect of significantly reducing the defect occurrence rate of the film. In particular, according to the present invention, since the foreign matter collected by the blade is sucked away through the suction path formed throughout the blade blade, the incidence rate of defects according to the position on the film was different because the suction device is installed in several places. There is an effect that the problem is eliminated at the source and the defect occurrence rate is uniformly reduced over the entire film area.

In addition, according to the present invention, since the suction path is formed on the blade blade, it is not necessary to secure additional space at the portion provided in direct contact with the roll or provided near the roll. The possibility of film damage that the devices had is also ruled out at the source, which has the effect of maximizing space utilization.

Hereinafter, a blade device for removing foreign matter on a roll according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view of a blade device for removing foreign matter on a roll according to the present invention, and FIG. 2 schematically shows a cross-sectional view of various embodiments of a blade device for removing foreign matter on a roll according to the present invention.

As shown, the blade device for removing foreign matter on the roll of the present invention is provided in close contact with the roll 200 used to transport the film 300 to remove the foreign matter adhering from the film or the outside and attached to the roll 200. In the blade device 100 for removing foreign matter on a roll, the blade 110 is provided in close contact with the opposite side of the side of the film 300 of the roll 200 to remove the foreign matter on the surface of the roll (200); Is formed through the body of the blade 110, one side of the blade 110 is in close contact with the roll 200 so that the foreign material removed from the surface of the blade 110 is introduced into the blade (200) An inlet passage 111 to be opened; A vacuum pump 120 connected to the other side of the suction path 111 through a connection path 130 to suck foreign substances introduced into one side of the suction path 111; It is made, including.

At this time, the roll 200 may be any of a driving roll or a transfer roll in the film production apparatus. That is, the blade device of the present invention is generally preferably provided on a driving roll having a higher probability of introducing foreign matters, but is provided on a transfer roll provided in a section in which foreign matters are frequently introduced according to a situation or condition. Any roll may be provided as long as it is in the path.

As shown in FIGS. 1 and 2, the blade 110 is formed in a flat plate shape, and a part of an end portion of the blade contacting the roll 200 is inclined to form a sharp outline. A narrow plane is formed in the direction of contact with the roll 200 at the end of the blade 110 so that sufficient contact with the 200 may be made.

As shown in Fig. 1, the blade device 100 of the present invention takes up only a space of the same size as the conventional blade device (in the side in contact with the roll 200) in appearance. However, the blade device 100 of the present invention, as shown in Figure 2, the suction path 111 is provided on the blade 110. The suction passage 111 is formed to penetrate the blade 110, one side is open toward the portion in which the blade 110 is in contact with the roll 200. Therefore, foreign matters collected by scraping the surface of the roll 200 by the blade 110 may be introduced through the suction passage 111 instead of staying on the blade 110 as it is. At this time, the other side of the suction path 111 is a vacuum pump (via the connection path 130) so that foreign matter collected on the blade 110 can be easily introduced into the suction path 111. 120). Therefore, the foreign matter collected on the blade 110 can be easily sucked into the suction path 111 by the suction force from the suction path 111 can be removed.

In the past, the foreign matter is continuously collected on the blade blade, but in this case, the foreign matter accumulated on the blade blade has a high possibility of deterioration of the foreign material removal ability of the blade. There was a risk of going. In addition, the method of removing the foreign matter trapped in the blade blade, the operation of the film manufacturing apparatus (that is, stop the rotation of the roll) to remove the blade to perform the cleaning, or the foreign matter is accumulated continuously by gravity Falling to the floor allows for natural removal. However, in the former case, there is a problem in that productivity is reduced by stopping operation of the film manufacturing apparatus. In the latter case, unexpected environmental factors such as foreign substances attracted by gravity are attracted by static electricity or blown by wind. There was a great risk of being stuck to the film.

However, in the blade device 100 of the present invention, the blade 110 is provided with the suction path 111 on the blade 110 side of the blade 110 in contact with the roll 200 to collect the foreign matter, the foreign matter is collected and At the same time, since it is removed by being directly sucked through the suction passage 111, foreign matters are buried again to the surface of the roll 200 or foreign matters that are separated from the blade 110 are buried in the film 300 again. Risk is eliminated at source.

In addition, as described above, the blade device 100 of the present invention includes a blade that is not provided with an auxiliary removal device such as removing foreign matter by suction (as disclosed in the prior arts) or removing foreign matter by dust collection. It will only occupy the same space. In the case of the device according to the prior art shown in FIG. 2, the auxiliary removal device provided on the blade takes up a considerable amount of space, so it is necessary to adjust the path of the film properly or it may not be possible to control the film path. In this case, there was a problem in that the auxiliary removing device should be installed in consideration of the position of the auxiliary removing device so as not to touch the film. If the proper space was not secured, there was a risk that the auxiliary removal device would touch the film being transported, resulting in damage or defects. However, in the blade device 100 of the present invention, by minimizing the space occupied by the blade device itself, it is possible to effectively remove foreign matters while removing such risks at source.

The suction passage 111 is preferably formed over the entirety of the blade 110. As described above, one side of the suction passage 111 is formed at a portion in which the blade 110 is in close contact with the roll 200, that is, the blade edge portion to suck the collected foreign matter. At this time, when the suction passage 111 is formed only on a portion of the blade 110, as in the case of the prior art, the foreign matter is not effectively removed in the portion where the suction passage 111 is not formed, manufacturing There was a problem that the defect incidence varies depending on the position of the film. However, in the present invention, the suction path 111 is formed throughout the blade 110, so that foreign matters are removed from all regions, and thus the defect occurrence rate according to the position of the manufactured film is not changed. The overall defect occurrence rate can be significantly reduced.

2 shows two embodiments of the blade device 100 of the present invention. First, in the embodiment shown in Figure 2 (A), the blade 110 is generally parallel to the radial direction of the roll 200, that is, similar to the form in which the conventional blade is installed, that is, the blade 110 It is provided in parallel with the normal direction of the cross section of the roll 200 from the point in contact with the roll 200. When the blade 110 is provided as shown in Figure 2 (A), the foreign material removal operation in the blade 110 is made irrespective of the direction of rotation of the roll 200, and thus the roll It is possible to install in the same form anywhere without considering the rotation progress direction of 200, the convenience of installation is increased.

In the embodiment shown in FIG. 2B, the blade 110 is different from the blade 110 in the embodiment shown in FIG. 2A, provided in parallel with the radial direction of the roll 200. The blade 110 is provided to be inclined with respect to the radial direction of the roll 200, that is, inclined with respect to the normal direction of the cross section of the roll 200 from the point of contact with the roll 200. The blade 110 is provided to be inclined in order to increase the foreign material suction efficiency, the blade 110 is provided to be inclined toward the rotation progress direction of the roll 200 when the blade 110 is provided to be particularly inclined. It is preferable to be.

As shown in FIG. 2B, when the blade 110 is inclined toward the rotation progress direction of the roll 200, foreign matter collected by the blade 110 may be introduced into the suction path 111 more effectively. It becomes possible. In particular, when the blade 110 is provided, as shown in Figure 2 (B), the blade 110 is sucked in the suction passage 111 foreign matter accumulated on the blade blade by scraping the surface of the roll 200. In addition, foreign matter adhering to the surface of the roll 200 which is approaching the suction path 111 as the roll 200 progresses is scratched by the blade 110 and accumulated on the blade edge. It may be previously sucked through the suction passage 111. That is, when the blade 110 is provided as shown in Figure 2 (B), the surface of the roll 200 is scratched by the blade 110, foreign matter is accumulated, the accumulated foreign matter is the suction passage 111 Each step in the foreign matter removal operation consisting of two steps sucked by) can be made at the same time to some degree, there is an advantage that the foreign matter removal efficiency can be further increased.

3 shows embodiments in the form of a suction path formed on the blade edge. The suction passage 111 may be formed in a form in which a plurality of holes are densely arranged as shown in FIG. 3 (A), or as shown in FIG. 3 (B), a rectangular hole is formed. A plurality of partitions 112 may be formed in the middle so as to be formed throughout and maintain structural rigidity of the blade 110.

Figure 4 also shows several embodiments in the form of a cross section of a suction passage formed on the blade edge. In the embodiment shown in Fig. 4A, the suction path is formed to be parallel to the side surface of the blade and penetrate the blade center, as in the embodiment shown in Fig. 2 or 3. In the embodiment shown in Figs. 4B and 4C, the passage is formed in a bent portion so that the inclined surface side of the blade edge is opened near the blade edge position. In this way it is possible to facilitate the inhalation of foreign matters.

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.

1 is a perspective view of a blade device for removing foreign matter on a roll according to the present invention.

Figure 2 is an embodiment of a blade device for removing foreign matter on a roll according to the present invention.

3 and 4 illustrate embodiments of blades.

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

100: blade device (of the present invention)

110: blade 111: suction

120: vacuum pump 130: connection

200: roll 300: film

Claims (7)

In the blade device 100 for removing foreign matter on the roll 200 is provided in close contact with the roll 200 used to transport the film 300 to remove the foreign matter adhering to the film 200 or the outside is attached to the roll 200 , A blade 110 provided on the opposite side of the side of the roll 200 in contact with the film 300 to remove foreign substances from the surface of the roll 200; Is formed through the body of the blade 110, one side of the blade 110 is in close contact with the roll 200 so that the foreign material removed from the surface of the roll 110 is introduced into the blade (110) Suction passage 111; A vacuum pump 120 connected to the other side of the suction path 111 through a connection path 130 to suck foreign substances introduced into one side of the suction path 111; Blade device for removing foreign matter on a roll comprising a. The method of claim 1, wherein the suction passage 111 Blade device for removing foreign matter on a roll, characterized in that formed over the entire portion in close contact with the roll (200). The method of claim 1, wherein the blade 110 Blade blade for removing foreign matter on a roll, characterized in that the blade 110 is provided in parallel with the radial direction of the roll (200). The method of claim 1, wherein the blade 110 Blade device for removing foreign matter on a roll, characterized in that the blade 110 is provided to be inclined with respect to the radial direction of the roll (200). The method of claim 4, wherein the blade 110 Blade device for removing foreign matter on a roll, characterized in that provided inclined toward the rotation progress direction of the roll (200). The method of claim 1, wherein the suction passage 111 A plurality of holes are formed in a form that is densely arranged on the blade 110, or a rectangular hole in which a plurality of partitions 112 are provided is formed in the form formed over the entire blade (110) Blade device for removing foreign matter on the roll, characterized in that. The method of claim 1, wherein the roll 200 Blade device for removing foreign matter on a roll, characterized in that any one of a drive roll or a transfer roll.

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