JP2009066524A - Roller cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller cleaning apparatus capable of excellently washing out foreign matters adhering to rollers having dimple type recessed parts or grooves in the surfaces with a compact and simple apparatus. <P>SOLUTION: The roller cleaning apparatus is employed for cleaning rollers having dimple type recessed parts or grooves in the surfaces and has a cleaning bath installed under the rollers at a slight gap from rollers and partially covering the lower faces of the rollers and the cleaning bath is provided with at least one spraying nozzle for jetting a cleaning liquid or compressed air in the inside of the cleaning bath, a cleaning tank for storing the cleaning liquid, a transportation means for sending the cleaning liquid from the cleaning tank to the cleaning bath, a drain mechanism for recovering the cleaning liquid used for cleaning from the cleaning bath. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a roller cleaning device for a non-driving roller that cleans a roller having dimple-shaped recesses and grooves on the roller surface.

  In recent years, in the converting industry and the like, a large number of products are produced in which a coating liquid is applied to a film or the like to increase added value. As a roller of an apparatus for producing this product, a roller that rotates with a base material (hereinafter referred to as a free roller) is often used.

  When this free roller conveys a base material, it is necessary to make the surface roughness of the roller fine so as not to damage the base material. When the surface roughness of this roller is fine, it is known that when the conveyance speed of the substrate is increased, slip is likely to occur as compared with a roller having a rough roller surface.

  As a method for preventing this slip, a grooved roller is used in which glass beads or the like are blown onto the surface of the roller at a high pressure to form a dimple-like recess, or a groove is provided in the roller rotation direction.

  When such a dimple-like recess or groove is formed on the roller surface, foreign matter may enter the recess.

  Further, in the case of a flat roller having no dimple-like recesses or grooves on the roller surface, when a foreign substance adheres to the roller surface, it can be easily removed with a waste impregnated with a solvent.

  The foreign matter that has entered the concave portion of the roller having a dimple-like concave portion or groove cannot be easily removed like a flat roller.

  This foreign matter is transferred to the base material and becomes a foreign matter defect, or a dimple-like recess or groove is blocked. And the function of the roller which has a dimple-like recessed part and a groove | channel may be lost.

  As a method of cleaning such foreign matter that has entered the recesses or grooves of the roller, a roller cleaning device that immerses the roller in a cleaning tank and also cleans the roller using an ultrasonic cleaning device (see, for example, Patent Document 1). It has been known.

  This roller cleaning device cleans ink that has entered a gravure roll or the like. Further, no problem occurs even if the cleaning roll is a single roll and the apparatus is somewhat large.

Prior art documents are shown below.
JP 2001-286837 A

  However, the cleaning of the free rollers has a problem that there are a large number of them and the space of the apparatus is limited. Furthermore, since space is limited, there is a problem that a complicated apparatus cannot be used.

  The present invention has been made in view of the above-described conventional problems, and the problem is that a foreign object adhered to a roller having a dimple-like recess or groove on the surface is cleaned well with a compact and easy apparatus. An object of the present invention is to provide a roller cleaning device that can be used.

In order to solve the above problems, the invention according to claim 1 of the present invention provides:
A roller cleaning device for cleaning a roller having dimple-like recesses and grooves on the roller surface,
A cleaning tank that has a minute gap with the roller on the lower surface of the roller and covers a part of the lower surface of the roller;
At least one spray nozzle for injecting either cleaning liquid or compressed air into the cleaning tank;
A cleaning tank for storing the cleaning liquid;
Conveying means for sending the cleaning liquid from the cleaning tank to the cleaning tank;
A drain mechanism for collecting the cleaned cleaning liquid from the cleaning tank;
A roller cleaning device.

Next, the invention according to claim 2 of the present invention is as follows.
The roller cleaning apparatus according to claim 1, wherein the cleaning tank is provided with a mechanism that moves in a roller axial direction.

Next, the invention according to claim 3 of the present invention is
The roller cleaning device according to claim 1, further comprising a switching mechanism that ejects either the cleaning liquid or the compressed air from the spray nozzle.

Next, the invention according to claim 4 of the present invention is
The roller cleaning device according to any one of claims 1 to 3, wherein the cleaning tank is provided with exhaust means from the inside to the outside of the cleaning tank.

Next, the invention according to claim 5 of the present invention is
5. The roller cleaning device according to claim 1, further comprising a mechanism for contacting the roller and wiping the roller surface between the roller and the roller.

  Since the roller cleaning apparatus of the present invention has the above-described configuration, the foreign matter that has entered the dimple-like recesses and grooves can be easily scraped off with the cleaning liquid. Furthermore, it is possible to suppress the amount of the cleaned cleaning liquid that leaks to the outside of the cleaning device.

  In addition, the entire roller to be cleaned can be obtained in a short time without using an expensive and complicated device such as a cleaning ultrasonic wave generator, and an inexpensive device that does not require a large space.

  Furthermore, since a mechanism for switching between cleaning liquid and compressed air is provided, the cleaning liquid can be blown off and the roller surface can be dried by spraying compressed air from the spray nozzle onto the roller surface after cleaning the roller surface with the cleaning liquid. .

  Further, since a mechanism for wiping the roller surface is provided, the cleaning liquid remaining on the roller surface and foreign matters can be completely wiped off.

Since the cleaning liquid remaining on the roller surface is wiped off, the atmosphere in the workplace and the like is not contaminated.

  The roller cleaning apparatus of the present invention will be described in detail below along the embodiments with reference to the drawings. 1 to 7 show an embodiment of the present invention.

  FIG. 1 is a perspective view showing an outline of an embodiment of a cleaning tank of a roller cleaning apparatus of the present invention.

  As shown in FIG. 1, the shape of the washing tank of the roller washing apparatus of the present invention is formed in a V-shaped cross-sectional shape. Moreover, the drain 3 is provided in the lower part of the end surface of the cleaning tank in the longitudinal direction. Then, the cleaned cleaning liquid is discharged from the drain 3.

  By setting the shape of the cleaning tank to a V-shaped cross-sectional shape, the cleaning liquid can be easily guided to the drain 3. Further, a spray nozzle 2 is provided at the center position in the longitudinal direction of the cleaning tank 1.

  Next, FIG. 2 is a schematic cross-sectional view showing a cross-section of one embodiment of the cleaning tank of the roller cleaning device of the present invention.

  As shown in FIG. 2, the roller 8 and the cleaning tank 1 are formed so as to have a uniform gap of 1 mm. Further, the spray nozzle 2 is provided so as to face the center direction of the roller 8 and to improve the cleaning ability. Further, the cleaning tank 1 can be moved at an equal interval from the roller 8 by a slide guide 4 attached to the lower part of the cleaning tank 1.

  Next, FIG. 3 is a schematic diagram for explaining the outline of the roller cleaning device of the present invention, (a) is a schematic diagram showing a side surface of the roller cleaning device, and (b) is a schematic diagram showing also the front of the roller cleaning device. FIG. As shown in FIGS. 3 (a) and 3 (b), a guide fixing jig 6 is formed in which slide bearings 7 are provided at both ends in the longitudinal direction of the base. Further, a guide rail for guiding the slide guide 4 is provided at the center position in the lateral width direction of the base.

  The slide bearing 7 provided on the guide fixing jig 6 can be divided into an upper part and a lower part. For this reason, when the roller 8 is placed on the guide fixing jig 6, after the shaft portion of the roller 8 is placed on the lower portion of the slide bearing 7, the upper portion of the slide bearing 7 is placed on the shaft portion of the roller 8. It is placed above and fixed. By setting it as such a structure, the roller 8 can be easily rotated even if the washing | cleaning apparatus is wash | cleaning.

  Next, FIG. 4 is a perspective view showing an outline of another embodiment of the cleaning tank of the roller cleaning apparatus of the present invention.

  As shown in FIG. 4, the cleaning tank 1 is provided with an exhaust port 5 at a substantially central position on the side surface in the longitudinal direction of the cleaning tank 1. For this reason, the inside of a washing tank can be kept at a negative pressure.

  Next, FIG. 5 is a schematic sectional view showing a section of the cleaning tank of the roller cleaning device of the present invention. As shown in FIG. 5, the cleaning liquid 9 or the compressed air fed under pressure is diffused widely by the spray nozzle 2 provided in the cleaning tank. Moreover, the range to be sprayed is appropriately selected such that the distance from the roller 8 and the number of spray nozzles 2 are selected so that the width of the cleaning tank 1 can be covered.

  Next, FIG. 6 is a schematic explanatory view showing the outline of the roller cleaning apparatus of the present invention. As shown in FIG. 6, the roller cleaning device of the present invention sends compressed air 15 to the cleaning liquid tank 13 to pressurize the cleaning liquid 9. The pressurized cleaning liquid 9 passes through the switching valve 20 and is discharged toward the roller 8 from the spray nozzle 2 attached to the cleaning tank 1. The cleaned cleaning liquid is recovered from the drain 3 attached to the cleaning tank 1 and returned again to the cleaning liquid tank 13 through the filter 12.

  When the washed roller is dried, the switching valve 20 is switched, the compressed air 15 is sent to the spray nozzle 2 and sprayed onto the roller 8. Exhaust is performed from the exhaust port 5 so that the inside of the cleaning tank 1 has a positive pressure. When the cleaning liquid 9 is a solvent, the cleaning liquid 9 is connected to the VOC processing apparatus from the exhaust port 5 through the blower 10. The pressurization pressure of the cleaning liquid 9 and the compressed air pressure for drying are both about 0.5 MPa, and the cleanability is good.

  In addition, the cleaning tank 1 can be rotated or moved in the roller axis direction by sandwiching a non-dusting waste cloth in the longitudinal direction of the cleaning tank 1 or in the gap portion on the end surface, so that the cleaning with the cleaning liquid can be wiped off at the same time. It becomes possible.

It is a perspective view which shows the outline of one Example of the washing tank of the roller cleaning apparatus of this invention. It is the cross-sectional schematic which shows the cross section of one Example of the washing tank of the roller cleaning apparatus of this invention. It is the schematic explaining the outline of the roller cleaning apparatus of this invention, (a) is the schematic which shows the side of a roller cleaning apparatus, (b) is the schematic which also shows the front of a roller cleaning apparatus. It is a perspective view which shows the outline of other one Example of the washing tank of the roller washing apparatus of this invention. It is a schematic sectional drawing which shows the cross section of the washing tank of the roller cleaning apparatus of this invention. It is a schematic explanatory drawing which shows the outline of the roller cleaning apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Washing tank 2 ... Spray nozzle 3 ... Drain 4 ... Slide guide 5 ... Exhaust port 6 ... Guide fixing jig 7 ... Sliding bearing 8 ... Roller 9 ... Cleaning liquid 10 ... Blower 11 ... VOC processing device 12 ... Filter 13 ... Cleaning liquid tank DESCRIPTION OF SYMBOLS 15 ... Compressed air 17 ... Compressed air source 19 ... Compressed air long hole 20 ... Switching valve

Claims (5)

A roller cleaning device for cleaning a roller having dimple-like recesses and grooves on the roller surface,
A cleaning tank that has a minute gap with the roller on the lower surface of the roller and covers a part of the lower surface of the roller;
At least one spray nozzle for injecting either cleaning liquid or compressed air into the cleaning tank;
A cleaning tank for storing the cleaning liquid;
Conveying means for sending the cleaning liquid from the cleaning tank to the cleaning tank;
A drain mechanism for collecting the cleaned cleaning liquid from the cleaning tank;
A roller cleaning device comprising:   The roller cleaning apparatus according to claim 1, wherein the cleaning tank is provided with a mechanism that moves in a roller axial direction.   The roller cleaning apparatus according to claim 1, further comprising a switching mechanism that ejects either the cleaning liquid or the compressed air from the spray nozzle.   The roller cleaning apparatus according to any one of claims 1 to 3, wherein the cleaning tank is provided with exhaust means from the inside to the outside of the cleaning tank.   5. The roller cleaning device according to claim 1, further comprising a mechanism for contacting the roller and wiping the roller surface between the roller and the roller.

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