JP4027477B2 - Paper dust removal device for printing paper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper dust removing device for printing paper, and more specifically, an uncontaminated cloth winding roll around which an uncontaminated cleaning cloth is wound, and a cleaning cloth fed out from the uncontaminated cloth winding roll to a running printing paper. A watering roller for pressing, and a dirty cloth winding roll for winding the cleaning cloth after coming into contact with the printing paper. The cleaning cloth is supplied with water and humidified through the watering roller, and the printing paper is used by the cleaning cloth. The present invention relates to a paper dust removing device for printing paper that wipes off paper dust.
[0002]
[Prior art]
Conventionally, an uncontaminated cloth winding roll wound with an uncontaminated cleaning cloth, a watering roller that presses the cleaning cloth fed out from the uncontaminated cloth winding roll against the running printing paper, and the printing paper contacted There is a paper dust removing device for printing paper provided with a contaminated cloth take-up roll for taking up a subsequent cleaning cloth (see JP-A-6-320711 and JP-A-5-183112).
[0003]
In the paper dust removing device, the cleaning cloth is supplied with moisture through a watering roller, and the paper dust on the printing paper is wiped off with the cleaning cloth. The watering roller is positioned with respect to the printing paper. In addition, as the cleaning cloth, a non-woven fabric having water retention property is used in order to increase the amount of other contaminant particles such as paper dust attached to the surface of the printing paper per unit area.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional paper dust removing device described above, the nonwoven fabric used as the cleaning cloth generally stretches when given water, and the elasticity is remarkably lowered, and between the surface of the watering roller. Due to the generated adhesive force due to water, there was a problem that the water-rolling roller was pulled in the rotating direction and locally stretched. The amount of elongation is not uniform in the width direction of the cleaning cloth, but is particularly large near the center, so that a flat and uniform contact surface cannot be formed on the cleaning cloth over the entire width direction of the printing paper. It was.
[0005]
Further, due to insufficient cleaning cloth feeding amount with respect to the amount of foreign matters such as paper dust and contamination particles on the surface of the printing paper, and other factors, these foreign matters cannot be sufficiently taken into the cleaning cloth, and these foreign matters are Sometimes it slipped out to the back of the cleaning cloth. In such a case, foreign matter adhered to the surface of the watering roller, and the water in the water boat supplying water to the watering roller was contaminated. Further, in the conventional paper dust removing device described above, since the watering roller and the like are fixedly disposed, the cleaning cloth is pressed against the printing paper by the watering roller according to the quality of the printing paper and the amount of paper dust. The amount of application could not be adjusted.
[0006]
The present invention has been made in view of the above circumstances, and a flat and uniform contact surface (cleaning surface) can be constantly formed on the cleaning cloth over the entire width direction of the printing paper. A paper dust removing device for printing paper that can prevent the water in the watercraft from being contaminated by the foreign matter that has come out, and that can adjust the pressing amount of the cleaning cloth against the printing paper by the watering roller. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object, an uncontaminated cloth winding roll wound with an uncontaminated cleaning cloth, and watering that presses the cleaning cloth fed from the uncontaminated cloth winding roll against the running printing paper. A roller and a dirty cloth winding roll for winding the cleaning cloth after coming into contact with the printing paper. The cleaning cloth is supplied with moisture through the watering roller, and the paper dust on the printing paper is removed by the cleaning cloth. In a paper dust removing device for printing paper that is wiped off, a swinging arm that rotatably supports the watering roller, a water source roller that contacts the watering roller and supplies water, and the swinging arm is swung. e Bei an actuator for positioning the dampening roller to the printing paper is moving, the swing shaft of the swing arm and the axis of rotation of the water fountain roller device body Is supported concentrically frame Rutotomoni is stretched to the swing arm further comprises a woven fabric interposed between the water application rollers and the cleaning cloth, the water with the roller surface via a woven Water was supplied to the cleaning cloth and humidified .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a paper dust removing device for printing paper according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an embodiment of a paper dust removing device for printing paper according to the present invention. A pair of paper dust removing devices 10 according to the present embodiment are disposed on both sides of the printing paper 11. The paper dust removing device 10 includes a watering roller 13 that presses the cleaning cloth 12 against the running printing paper 11, a woven cloth 14 for water transmission interposed between the watering roller and the cleaning cloth 12, A water source roller 16 that supplies the water 15a in the water boat 15 to the watering roller, a pair of arms 17 and 17 that support the water source roller and the watering roller 13, and the like, A positioning means 18 is provided for positioning the watering roller while moving the attaching roller 13 to the printing paper 11 side.
[0009]
The watering roller 13 is rotatably supported between the pair of arms 17, 17, is always in contact with the water source roller 16, and is rotated at a low speed in the direction of the arrow. By this rotation, a water film is formed on the surface of the watering roller 13. This water film humidifies the cleaning cloth 12 through the woven cloth 14. The rotation speed of the watering roller 13 is variable, and the amount of water supplied to the cleaning cloth 12 is adjusted by changing the rotation speed of the watering roller.
[0010]
The water source roller 16 is a so-called sponge roller formed of a porous elastic material, and is attached to a shaft 16 a that is interposed between the pair of arms 17 and 17. The lower part of the water source roller 16 is always immersed in the water 15 a in the water boat 15 and is in contact with the watering roller 13. The water source roller 16 rotates in the opposite direction to the watering roller 13 and forms a water film on the surface of the watering roller 13 while absorbing water in the water boat 15.
[0011]
The positioning means 18 is configured to swing concentrically with the rotating shaft of the water source roller by an actuator 19 disposed below the arm 17. The actuator 19 is connected to one end of an arm 17 whose end of the rod 19a is displaced from the watering roller 13 and the water source roller 16, whereby the rod is extended and contracted, whereby the watering roller 13 is moved to the printing paper. The cleaning cloth 12 and the printing paper 11 can be brought into contact with each other by moving to the side 11 (from the side indicated by the two-dot chain line to the side indicated by the solid line).
[0012]
The arm 17 is concentric with the water source roller 16 and is supported by a device main body frame (not shown) so as to be rotatable. A projecting piece 20 is formed from the lower end of the arm 17 downward. Corresponding to the projecting piece 20, a stopper 21 is disposed on the apparatus main body frame side that supports the water boat 14 and the like. The stopper 21 can change the protrusion amount of the tip of the bolt 21b by rotating the nut 21a. When the watering roller 13 has moved to the printing paper 11 side by a desired amount, the protruding piece 20 of the arm 17 comes into contact with the tip of the bolt 21b of the stopper 21 so that the stopper 21 does not tilt the arm 17 any further. While restricting, the arm is held in an appropriately tilted state. Thereby, the maximum protrusion amount of the watering roller 13 with respect to the printing paper 11 can be adjusted using the stopper 21.
[0013]
The paper dust removing device 10 further includes an uncontaminated cloth winding roll 22 around which the uncontaminated cleaning cloth 12 is wound, a feeding roller 23 for feeding the cleaning cloth 12 from the uncontaminated cloth winding roll, and the cleaning cloth 12. A pressing roller 24 that is in contact with the feeding roller 23 in a sandwiching manner, a contaminated cloth winding roll 25 that winds the cleaning cloth 12 after contacting the printing paper 11, and a guide roller 26 that guides the cleaning cloth to the contaminated cloth winding roll 25. And.
[0014]
The woven fabric 14 is stretched between fixing bars 27 and 28 disposed on the arm 17. The fixing bar 27 is located above the watering roller 13, and the fixing bar 28 is located below the watering roller 13. One surface of the woven fabric 14 is in light contact with the watering roller 13, and the other surface is in contact with the cleaning fabric 12. The fixing of the woven fabric 14 to the fixing bars 27 and 28 can be performed using various conventionally known methods, and is not particularly limited.
[0015]
The cleaning cloth 12 is in the form of a long band whose width is wider than the width of the printing paper 11, and in particular, the amount of other contaminant particles such as paper dust adhering to the surface of the printing paper 11 per unit area. In order to increase the amount of water, a non-woven fabric suitable for water retention is used. The feeding roller 23 rotates intermittently and feeds the cleaning cloth 12 little by little toward the contaminated cloth winding roll 25. The contaminated cloth winding roll 25 is constantly given a winding force by a motor (not shown) through a torque limiter (not shown). The woven fabric 14 is preferably a canvas sheet, but is not limited to this, and any fabric may be used as long as it is resistant to friction with the watering roller 13 and penetrates water.
[0016]
Next, the operation of the paper dust removing device 10 will be described and the configuration will be clarified. In the present embodiment, by operating the actuator 19 to expand and contract the rod 19a, the arm 17 can be inclined by an appropriate angle, and the amount of protrusion of the watering roller 13 toward the printing paper 11 can be changed. Thereby, in the paper dust removing apparatus 10, the pressing amount of the cleaning cloth 12 against the printing paper 11 by the watering roller 13 can be adjusted according to the quality of the paper dust of the printing paper 11.
[0017]
In this embodiment, since the arm 17 is tilted about the axis of the water source roller 16, the water contact roller 13 does not change the amount of contact between the water roller 13 and the water source roller 16. The amount of pressing against the cleaning cloth 12 can be changed. Furthermore, in this embodiment, by rotating the water source roller 16 and the watering roller 13 in the direction of the arrow, the water 15a in the water boat 15 is transferred to the watering roller 13 via the water source roller 16, A water film is formed on the surface of the watering roller and transferred to the woven fabric 14. As a result, the woven cloth 14 sucks (penetrates) the water transferred from the watering roller 13 and humidifies the cleaning cloth 12 in contact with the other surface with water supply. By bringing the cleaning cloth 12 in a state in which water is supplied and humidified into contact with the printing paper 11, foreign matters such as paper dust and contaminants on the running printing paper 11 can be removed while being wiped off.
[0018]
The contact portion between the cleaning cloth 12 and the printing paper 11 is sequentially humidified with water via the woven cloth 14 as the watering roller 13 rotates, whereby foreign matter on the surface of the printing paper 11 is removed from the cleaning cloth. 12 is effectively removed. Further, the cleaning cloth is sequentially sent from the uncontaminated cloth roll 22 to the contaminated cloth winding roll 25 so that the uncontaminated portion of the cleaning cloth 12 always contacts the printing paper 11.
[0019]
Furthermore, in this embodiment, since the woven cloth 14 is interposed between the watering roller 13 and the cleaning cloth 12, the cleaning cloth 12 is not directly pulled by the watering roller 13. Moreover, even if a water film is uneven on the surface of the watering roller 13 (for example, in the case of a water droplet), the water transferred to the woven fabric is diffused in the woven fabric by capillary action. For this reason, since water is uniformly supplied from the woven cloth 14 to the cleaning cloth 12, a flat and uniform cleaning surface is formed on the cleaning cloth, and the foreign matter on the printing paper 11 can be sufficiently wiped at all times.
[0020]
Furthermore, if the cleaning cloth 12 is torn, or if foreign matter on the printing paper 11 comes out of the cleaning cloth, the foreign matter that has come out is received by the woven cloth 14, When the cleaning cloth is fed to the contaminated cloth winding roll, the foreign matter is wiped off on the back surface of the cleaning cloth and sent to the contaminated cloth winding roll, so that the water 15a in the water boat 15 is contaminated. There is nothing. The above-described effects are exhibited by the respective paper dust removing devices 10 on both sides of the printing paper 11.
[0021]
In the above embodiment, a pair of paper dust removing devices 10 are arranged on both sides of the printing paper 11, but of course, they may be arranged on one side of the printing paper 11. In the above embodiment, the actuator 19 of the positioning means 18 is disposed below the arm 17. However, the present invention is not limited to this, and is appropriate in consideration of the position and size of the water source roller 13 and the surrounding roller group. What is necessary is just to arrange | position in the position. The actuator for positioning, for example, those obtained by interposing a rack and pinion mechanism or the like, short, as long as linearly can be forward, may be constituted by using a conventionally known any technique .
[0022]
【The invention's effect】
As described above, according to the paper dust removing device for printing paper according to the present invention, a woven cloth is interposed between the watering roller and the cleaning cloth, and water on the surface of the watering roller is discharged through the woven cloth. Since the cleaning cloth is supplied with water and humidified, the cleaning cloth is not pulled by the watering roller due to the adhesive force of water generated between the cleaning cloth and the surface of the watering roller. Moreover, even if a water film is uneven on the surface of the watering roller, the water transferred to the woven fabric is diffused in the woven fabric by capillary action. For this reason, since water is uniformly supplied from the woven cloth to the cleaning cloth, a flat and uniform cleaning surface is formed on the cleaning cloth, and the foreign matter on the printing paper can be sufficiently wiped at all times.
[0023]
Furthermore, if the cleaning cloth is torn or if foreign matter on the printing paper comes out of the cleaning cloth, the foreign matter that has come out is received by the woven cloth, and the foreign matter on the woven cloth is As the cleaning cloth is fed to the contaminated cloth winding roll, the cleaning cloth is wiped off on the back surface and sent to the contaminated cloth winding roll, so that the water in the water boat is not contaminated.
[0024]
In addition, since the watering roller is provided with positioning means for moving the watering roller toward the printing paper and positioning the printing paper, the cleaning cloth and the printing paper are brought into contact with each other by the positioning means. Depending on the amount of paper dust, the amount of pressing of the cleaning cloth against the printing paper by the watering roller can be adjusted.
[Brief description of the drawings]
FIG. 1 is a diagram conceptually illustrating an embodiment of a paper dust removing device for printing paper according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Paper dust removal apparatus 11 Printing paper 12 Cleaning cloth 13 Watering roller 14 Woven cloth 15 Water boat 15a Water 16 Sponge roller (water source roller)
17 Arm 18 Positioning means 19 Actuator 20 Protruding piece 21 Stopper 22 Uncontaminated cloth winding roll 23 Feeding roller 24 Pressing roller 25 Contaminated cloth winding roll 26 Guide rollers 27 and 28 Fixing bar

Claims (1)

An uncontaminated cloth winding roll wound with an uncontaminated cleaning cloth, a watering roller that presses the cleaning cloth fed from the uncontaminated cloth winding roll against the running printing paper, and cleaning after contacting the printing paper In a paper dust removing device for printing paper, comprising a contaminated fabric winding roll for winding the fabric, supplying and humidifying the cleaning fabric via the watering roller, and wiping the paper dust of the printing paper with the cleaning fabric. ,
A swing arm that rotatably supports the water roller, a water source roller that contacts the water roller and supplies water, and swings the swing arm to position the water roller with respect to the printing paper. Bei example an actuator for the pivot shaft of the swing arm and the rotation shaft of the dip roller is supported concentrically to the apparatus body frame Rutotomoni is stretched to the swing arm, and the water application rollers A paper powder for printing paper, further comprising a woven cloth interposed between the cleaning cloth and water supplied from the surface of the watering roller to the cleaning cloth through the woven cloth for humidification. Removal device.

Images