JPH07140554A - Sheet like body washing device - Google Patents

Abstract

PURPOSE:To provide a sheet like body washing device having a high washing effect. CONSTITUTION:The device is provided with a tank 1 for storing washing liquid, a carrying means 8 for carrying the sheet like body to be washed 32 immersed in the washing liquid, a lifting means 13 for lifting the wet sheet like body 32 carried by the carrying means 8 above the tank 1, a squeezing means 25 for squeezing the sticking material sticking to the surface of the sheet like body 32 lifted by the lifting means 13 and a washing liquid scattering means 30 for applying the clean finishing washing liquid on the lifted sheet like body 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a used OHP.
(Over Head Projector) sheet, 2nd copy
The present invention relates to an apparatus for cleaning sheet-like bodies (plate-like bodies) such as base paper, vehicle-mounted mats, various filters, screen doors, various sheets.

[0002]

2. Description of the Related Art OHPs for enlarging and projecting images are often used in lectures and conferences. A transparent synthetic resin sheet is used for this OHP sheet, and characters, tables, figures, etc. are written with a water-based ink. The image written on the OHP sheet can be erased by wiping it with a cloth or the like soaked with water or an organic solvent, so that the OHP sheet can be used repeatedly.

[0003]

By the way, it is time-consuming to erase an image by hand in the related art, the image cannot be erased neatly, and when the OHP sheet is reused, it is difficult to see an image. ing.

In order to solve this, for example, the actual development sho 60-
No. 59245, No. 2-58771, No. 2-1
There has been proposed an OHP sheet reproducing apparatus as described in No. 17547.

However, even the conventionally proposed reproducing apparatus has problems that the image on the sheet cannot be erased cleanly and that the surface of the sheet is scratched and the transparency is lowered.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a cleaning device for a sheet-shaped body having a high cleaning effect.

[0007]

In order to achieve the above-mentioned object, the present invention provides a tank in which a cleaning liquid such as water is stored and a sheet-shaped body to be cleaned such as an OHP sheet, which is immersed in the cleaning liquid. For example, a conveyer having a conveyer belt for conveying, a raising means having a raising belt for raising the wet sheet-like body conveyed by the conveyer above the tank, and a raising means Equipped with a scraping means, such as a rotating brush, for scraping off adhered matter adhering to the surface of the sheet-like body, and for applying a clean cleaning liquid for finishing to the lifted sheet-like body, for example, a pumping belt and a water tub A cleaning liquid spraying means is provided.

[0008]

The present invention is configured as described above, and since the sheet-like body to be cleaned can be sufficiently wetted with the cleaning liquid while being conveyed by the conveying means, it can be scraped off by the scraping means later. Is effectively done. Further, since the cleaning liquid is applied by the cleaning liquid spraying means together with the scraping, the cleaning finish is beautiful and a high cleaning effect can be obtained.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a cleaning device according to an embodiment.
As shown in the figure, the cubic tank 1 is made of synthetic resin, stainless steel or the like, has a drain port 2 formed in one corner, the drain port 2 is normally closed, and the drain filter 3 is provided inside the drain port 3. Is installed.

In the tank 1, two filter boxes 4 and 4 are arranged at a predetermined interval. The opening on each side of the filter box 4 is covered with a filter, and the upper side is open. As shown in FIGS. 2 and 3, the tank 1 is filled with water 5 as a cleaning agent, but the opening of the filter box 4 projects above the water surface 6. The size of the mesh of the filter attached to the filter box 4 is such that the mass of ink particles floating in the tank 1 does not pass through.

As shown in FIGS. 3 and 4, the front side (drainage port 3 side) and the rear side (filter box 4 side) of the tank 1 are shown.
Each of them has two pulleys 7, two conveyor belts 8 are stretched over the pulleys 7, and are rotationally driven by a conveyor belt motor 9 (see FIG. 1). In this embodiment, each pulley 7 and conveyor belt 8 are immersed in water 5.

Pulley 7 on the back side (filter box 4 side)
Inside, the pair of pulleys 10 is arranged in the vertical direction, and two delivery belts 11 are stretched over the pulleys 10. Further, a pulley 12 is disposed slightly in front of and above the pulley 10 on the upper side.
Two ascending belts 13 are bridged over the No. 2.

As shown in FIG. 1, a lifting belt motor 1
The output shaft 4 is connected to the gear 15, and the gear 15 meshes with the gear 16 having the same number of teeth. The gear 15 is connected to the lower pulley 12 on one side, and the gear 16 is connected to the upper pulley 11 on one side. Therefore, the transfer belt 11 and the lifting belt 13 rotate at the same speed, but rotate in opposite directions. Is.

The length of the lifting belt 13 is an integral multiple of the length of the transfer belt 11 (four times in this embodiment).
The delivery belt 11 is provided with one projecting piece 17, while the rising belt 13 is provided with four projecting pieces 18 at equal intervals. The interval between the protrusions 18 is longer than the vertical length of the OHP sheet 32 described later.

As shown in FIG. 2, a guide plate 21 having an inclined side 20 is installed on the upper part of the delivery belt 11 so as to gradually approach the rising belt 13 side as it goes up. A pair of rail-shaped hooks 19 extending toward the front side are fixed near the upper pulley 12.

The lower parts of the pair of scooping belts 22 are inserted into the filter box 4, and a plurality of teeth 23 are formed on the inner surfaces of the four scooping belts 22 as shown in FIG. A large number of pumping boxes 24 are attached to the.

As shown in FIG. 1, left and right pumping belts 2
The cleaning brushes 25 are arranged in two rows and four stages between the two, and both ends of the shaft of the cleaning brush 25 are arranged inside the pumping belt 22 and are connected to and supported by the gear 26 meshing with the teeth 23. There is.

The output shaft of the brush driving motor 14 is the gear 2
8 and the gear 28 meshes with the gear 29 having the same number of teeth. The gears 28 and 29 are connected to the corresponding gears 16 in the pumping belt 22, so that the pumping belts 22 and the cleaning brush 25 move at the same speed, but the pumping belt 22 on the front side and the cleaning brush 25 and the back side are moved. The pumping belt 22 and the cleaning brush 25 are rotated in opposite directions. The cleaning brush 25 is made of, for example, a synthetic resin such as polyamide or polypropylene.

A water distribution gutter 30 having a V-shaped or U-shaped side surface is attached above the cleaning brush 25, and a large number of water distribution holes 31 are formed in the lower part of the water distribution gutter 30. In addition, in order to make the shape of the water distribution gutter 30 easy to understand, the drawing shows that the end surface of the water distribution gutter 30 is open, but the end surface of the water distribution gutter 30 is actually closed.

OH to be reused as shown in FIG.
The P sheet 32 is set in this cleaning device in a state where the upper end of the P sheet 32 is sandwiched by the hangers 33. The OHP sheet 32 is usually composed of a transparent synthetic resin sheet such as polyethylene terephthalate (PET) or polyimide, on which characters, tables, figures, etc. are written with a water-based ink. In the present invention, such a normal OHP sheet 32 can be used, but the OHP having the structure shown in FIG. 6 is used.
The sheet 32 is suitable.

The OHP sheet 32 is composed of a base sheet 34 made of a transparent synthetic resin sheet such as polyethylene terephthalate (PET) or polyimide, and a transparent surface layer 35 formed on one side or both sides thereof. . When the surface layer 35 gets wet, it has a property of expanding or contracting at a rate different from that of the water-based ink having characters or the like written on the OHP sheet 32, and the ink can be easily removed by utilizing this property. .

The specific example of the surface layer 35 is as follows. Polyethylene glycol (Polyethylene glycol # 1000 manufactured by Nacalai Tesque, Inc.) 10 parts by weight Polyfunctional isocyanate compound (Coronate L manufactured by Nippon Polyurethane Industry Co., Ltd.) 9.7 parts by weight Cyclohexanone 23 parts by weight Toluene 23 parts by weight This composition is placed in a flask equipped with a condenser. Put, 8
The chemical reaction is allowed to proceed with stirring at 0 ° C. until the viscosity increases.

The resin solution thus obtained was coated on a base sheet 34 made of polyethylene terephthalate (PET) having a thickness of 75 μm so as to have a thickness of 60 μm, dried and then 70
A high temperature treatment is performed at 3 ° C. for 3 days to form a surface layer 35 having a hydrophilic component. The sheet thus manufactured is transparent and can be used as the OHP sheet 32.

Next, the operation of this cleaning device will be described. The two conveyor belts 8 are conveyor belt motors 14,
The two transfer belts 11 and the two lifting belts 13 are the lifting belt motors 14 and the four pumping belts 22 and 8
The book cleaning brush 25 is rotated in the direction of the arrow by a brush driving motor 27.

The used OHP sheet 32 to be recycled is hung on a hanger 33 as shown in FIG.
As described above, the OHP sheet 32 is placed on the front side of the conveyor belt 8 and the entire OHP sheet 32 is immersed in the water 5. The work of sequentially mounting the OHP sheets 32 on the conveyor belt 8 is performed manually or by a machine.

The OHP sheet 32 placed on the conveyor belt 8 slowly advances in the water 5 while the OHP sheet 32 is transferred.
The ink adhering to the working sheet 32 comes into contact with water, is adsorbed and easily drops off. In particular, when the OHP sheet 32 shown in FIG. 6 is used, the ink is particularly easily peeled from the surface layer 35 due to the difference in swelling between the surface layer 35 and the ink. It is suitable that the OHP sheet 32 is conveyed for about 3 to 8 minutes.

As shown in FIG. 7, there is a stopper 36 in front of the delivery belt 11, and the conveyed OHP sheet 32 stops at that position and stands by. Then, as the delivery belt 11 rotates, the most advanced OHP sheet 3
When the second hanger 33 is picked up by the protruding piece 17 in the direction of the arrow and both ends of the hanger 33 come into contact with the inclined side 20, the hanger 33 slides on the protruding piece 17 by the guide of the inclined side 20 and approaches the rising belt 13. . When the hanger 33 is pushed out of the projecting piece 17 by the guide of the inclined side 20, the timing is such that the projecting piece 18 of the ascending belt 13 is at the same height as the projecting piece 17, so that the hanger 33 is not attached to the projecting piece 17. Is automatically transferred to the projecting piece 18.

The hanger 33 transferred to the projecting piece 18 rises while passing between the cleaning brushes 25 as shown in FIG. Each cleaning brush 25 rotates in a direction to scrape off the OHP sheet 32, and the swollen ink is effectively scraped off from the OHP sheet 32 by the cleaning brushes 25 in each stage.

A large number of pumping boxes 24 are attached to the pumping belt 22, and the water in the filter box 4 is sequentially pumped up by the pumping box 24 as the pumping belt 22 rotates. The water that has passed through the filter and entered the filter box 4 is clean water that does not contain suspended solids, and this purified water is pumped up by the pumping box 24, and as shown in FIGS. When making a U-turn at the top, the purified water in the pumping box 24 is automatically transferred to the distribution gutter 30.

The purified water transferred to the water distribution gutter 30 is sprayed from the water distribution hole 31 onto the cleaning brush 25, is used for cleaning the OHP sheet 32, and is transferred to the cleaning brush 25 at each stage to remove the scraped ink. Return to tank 1 with the lump. As shown in FIG. 3, since the filter box 4 is placed at a position away from the cleaning brush 25, the water falling from the cleaning brush 25 does not drop directly onto the filter box 4. FIG. 10 is a schematic diagram showing the flow of this washing water.

Hanger 33 passing between cleaning brushes 25
The (OHP sheet 32) further rises, and is carried onto the hook 19 and dried as shown in FIGS. If the hook 19 is above the tank 1 as in this embodiment,
The water dropped from the OHP sheet 32 can be received by the tank 1, and the periphery of the cleaning device will not get wet with the dropped water. Further, it is possible to save space and to take out the washed OHP sheet 32 more conveniently than a hook 19 not provided above the tank 1.
In order to arrange the hook 19 above the tank 1 as described above, the lifting belt 1 is provided between the conveyor belt 8 and the lifting belt 13.
Delivery belt 1 that rotates in a direction opposite to the rotation direction of 3
1 is interposed.

When the water 5 in the tank 1 becomes dirty, the drain port 2
Open the tank to drain it, and put new water 5 in the tank 1. At the time of drainage, the lump of ink is collected by the drainage filter 3.

FIG. 11 is a diagram showing a first modification of the cleaning device. In the case of this example, the conveyor belt 8 is not immersed in the water 5, but only the OHP sheet 32 is immersed in the water 5. In addition, a stirring means such as a propeller 40 is installed in the tank 1, and agitation of the water 5 causes convection to promote swelling and falling of the ink.

FIG. 12 is a diagram showing a second modification. In the case of this example, the ultrasonic vibrator 41 is installed on the inner surface of the tank 1, and by this, ultrasonic vibration is applied to the water 5 to promote the swelling and dropping of the ink.

FIG. 13 is a diagram showing a third modification. In the case of this example, the ultrasonic vibrator 41 is installed inside the conveyor belt 8 to apply ultrasonic vibration to the OHP sheet 32 to promote swelling and falling of the ink. Second,
Although ultrasonic vibration is used in the third modification, normal mechanical vibration may be used.

FIG. 14 is a diagram showing a fourth modification. In the case of this example, the delivery belt 11 is not provided, and the lifting belt 13 is directly connected to the conveyor belt 8. Therefore, the hook 19 is arranged at a position protruding from the tank 1, and the water drop receiver 42 is arranged below the hook 19. Has been done. Also,
A fan 43 for drying the OHP sheet 32 hung on the hook 19 is provided.

In each of these modifications, the other structure is shown in FIG.
Since they are the same as the embodiment shown in FIG. 10, their explanations are omitted.

Although water was used as the solvent in the above-mentioned examples, an organic solvent such as alcohol, toluene, benzine, thinner or the like, or a mixture of the organic solvent and water may be used. It is also possible to add an appropriate amount of a surface active agent such as an active agent, a cationic surface active agent, a nonionic surface active agent or an amphoteric surface active agent.

Although the pumping belt is used in the above-mentioned embodiment, it is also possible to pump the purified water to the water tub by using the pumping pump and the hose.

In the above embodiment, the case of cleaning the OHP sheet has been described, but the present invention is not limited to this. For example, the copied second base paper, the on-vehicle mat, various filters,
It can also be applied to cleaning other sheet-like bodies (plate-like bodies) such as screen doors and various sheets.

[0041]

EFFECTS OF THE INVENTION The present invention is configured as described above, and since the sheet-like material to be cleaned can be sufficiently wetted with the cleaning liquid while being conveyed by the conveying means, it can be removed by the scraping means later. The scraping is done effectively. Also,
Since the cleaning liquid is applied by the cleaning liquid spraying means along with the scraping, the cleaning finish is beautiful and a high cleaning effect can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cleaning device according to an embodiment of the present invention.

FIG. 2 is a side view in which a part of the cleaning device is cut away.

FIG. 3 is a front view in which a part of the cleaning device is removed.

FIG. 4 is a top view of the cleaning device.

FIG. 5 is a perspective view of an OHP sheet hung on a hanger.

FIG. 6 is an enlarged cross-sectional view of the OHP sheet.

FIG. 7 is a partial side view for explaining the delivery of hangers.

FIG. 8 is a view for explaining the operation of the pumping belt.

FIG. 9 is a view for explaining the operation of the pumping belt.

FIG. 10 is a schematic view showing the flow of water in the cleaning device.

FIG. 11 is a sectional view showing a first modification of the present invention.

FIG. 12 is a sectional view showing a second modification of the present invention.

FIG. 13 is a sectional view showing a third modified example of the present invention.

FIG. 14 is a sectional view showing a fourth modified example of the present invention.

[Explanation of symbols]

 1 Tank 4 Filter Box 5 Water 8 Conveyor Belt 11 Delivery Belt 13 Ascending Belt 17, 18 Projecting Piece 19 Hook 21 Guide Plate 22 Pumping Belt 24 Pumping Box 25 Cleaning Brush 30 Water Vat 31 Water Distribution Hole 32 OHP Sheet 33 Hanger 34 Base Sheet 35 surface layer 40 propeller 41 ultrasonic transducer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location G03G 21/00 578

Claims (10)

[Claims] 1. A tank in which a cleaning liquid is stored, a conveying means for immersing a sheet-like body to be cleaned in the cleaning liquid, and conveying the same.
Ascending means for lifting the wet sheet-like body conveyed by the conveying means above the tank, and a scraping-off means for scraping off the adhered matter adhering to the surface of the sheet-like body lifted by the ascending means. A cleaning device for a sheet-shaped body, comprising: a cleaning liquid-spraying means for applying a clean cleaning liquid for finishing to the lifted sheet-shaped body. 2. The apparatus for cleaning a sheet according to claim 1, wherein the sheet is an OHP sheet. 3. The filter box according to claim 1, wherein a filter box is arranged in the tank, and a clean cleaning liquid containing no suspended matter that has passed through the filter box is pumped up by the solvent spraying means. An apparatus for cleaning a sheet-shaped body, characterized by: 4. The conveying means according to claim 1, wherein the conveying means has a conveying belt, and the raising means has a raising belt. Between the conveying belt and the raising belt, a direction opposite to a rotating direction of the raising belt. An apparatus for cleaning a sheet-like body, characterized in that a delivery belt that rotates around is interposed. 5. The apparatus for cleaning a sheet-shaped body according to claim 4, wherein a hook for suspending the washed sheet-shaped body is provided near the upper end of the rising belt and above the tank. 6. The sheet according to claim 1, wherein the scraping means has at least a pair of rotating brushes, and the wet sheet-like body is configured to pass between the rotating brushes. Equipment for cleaning objects. 7. The apparatus for cleaning a sheet according to claim 6, wherein a plurality of pairs of the rotating brushes are provided in a vertical direction. 8. The cleaning device for a sheet according to claim 1, further comprising convection forming means for forming convection in the cleaning liquid in the tank. 9. The sheet-like cleaning device according to claim 1, further comprising vibration applying means for applying vibration to the cleaning liquid in the tank. 10. The apparatus for cleaning a sheet-like body according to claim 1, further comprising a vibration imparting means for imparting vibration to the sheet-like body conveyed by the conveying means.