JP5210007B2 - Sheet cleaning equipment - Google Patents

Description

  The present invention relates to a sheet-like material cleaning apparatus for cleaning a sheet-like material between rolls that are paired up and down.

  Conventionally, as this type, the sheet body is sandwiched between the upper sandwiching roller and the lower sandwiching roller, washed with the upper cleaning roller and the lower cleaning roller, and then the sheet body is sandwiched with the upper and lower sandwiching rollers, and the feeding process is continuously performed There are devices to perform (for example, Patent Document 1 and Patent Document 2).

  In the above apparatus, cleaning liquid is circulated and cleaning is performed by a roller. In this method, dirt dropped from the sheet-like material adheres to the roller side, and this dirt may adhere to the sheet-like material again. In such a case, a rinsing step with a cleaning solution or the like is necessary, which is very laborious. Furthermore, the conventional apparatus cannot obtain a sufficient cleaning effect against dirt such as highly viscous grease.

  Moreover, in the washing | cleaning apparatus provided with the washing brush, like the said patent documents 1 and 2, a roll rotates in the direction which sends a sheet-like object. In this case, the rotation of the cleaning brush is set faster than that of the transport roll, and the cleaning brush forcibly feeds the sheet-like material, causing a transport failure or leaving a washing residue. It was the cause.

  By the way, there is a so-called industrial rewritable sheet (reversible heat-sensitive storage member) which is a sheet-like material of a reversible heat-sensitive storage medium. The sheet-like material is made of a resin or the like, and has a heat-sensitive layer and a protective layer on a support. It is possible to repeatedly write character information and the like by heat, and furthermore, various information can be stored by attaching an IC tag (for example, Patent Document 3 and Patent Document 4).

  The industrial rewritable sheet as described above is suitable for processing instructions in factories and the like, and is used repeatedly. Under such use conditions involving on-site work, dirt such as oil tends to adhere to the sheet-like material. For this reason, it is necessary to wash before rewriting the contents during repeated use.

However, as described above, conventional cleaning apparatuses have poor oil removal efficiency. Further, in the conventional apparatus, since the rotation direction of the cleaning brush is the same as the conveying direction, when an IC tag or the like is attached to the edge of the sheet-like material or the sheet-like material, its edge portion or its bonding step Dirt was easy to remain on the part. Although it has become possible to improve as in Patent Document 5, it has been found that cleaning with an anion or nonionic surfactant or removal of the cleaning liquid is insufficient at a high speed of 300 mm / min or more. It was also found that there was a bad influence on the conveyance. (Patent Document 5)
A cleaning solution that does not use a surfactant was also examined, but it was found that there was a problem that it was impossible to remove dirt due to lack of cleaning power. (Patent Document 6)
JP 2002-45815 A JP 7-39843 A JP-A-2005-35276 JP 2005-265247 A JP 2006-263622 A JP 2007-169320 A

  It is an object of the present invention to provide a sheet-like material cleaning apparatus that can effectively remove dirt on a sheet-like material using a surfactant under such circumstances.

As a result of intensive studies, the present inventors have found that it is effective to incline the sheet conveyance path in the cleaning device upward, and have reached the present invention.
That is, the present invention
[1] A cleaning device having the following configuration in a cleaning device having a cleaning roll for cleaning a sheet-like material using a cleaning liquid containing a surfactant.
(1) The sheet-like material is conveyed while being inclined upward by 1 to 90 ° in all or part of the conveying path.
(2) It has three or more scrapers for removing the cleaning liquid remaining on the sheet-like material.
(3) The scraper can be rinsed with water and / or alcohol.
(4) The scraper has a deformation elasticity of 0.1 to 100 g / cm and is in contact with the surface of the sheet at an angle of 30 to 90 °.
(5) The scraper has a width of 1.1 times or more the sheet width. .
(6) It has a wiping roll for removing the cleaning liquid remaining on the sheet-like material.
(7) The wiping roll has a width of 1.1 times or more the sheet width.
(8) The wiping roll has a scraper on its side surface.
[ 2 ] The cleaning apparatus according to [ 1 ], wherein the carry-in section side paper feed section of the transport path includes a cleaning liquid scattering prevention sheet .
[ 3 ] The cleaning roll according to [1] or [ 2 ], wherein the cleaning roll on the carry-out side of the cleaning roll has a reverse function with respect to the conveying direction in both the upper and lower sides and a sheet jump prevention guard is provided. Cleaning equipment.

  According to the present invention, the liquid remaining on the washed sheet can be reduced as much as possible, which can greatly contribute to energy saving in the drying process. Also, the cleaning liquid is easy to collect.

In the sheet-like material cleaning apparatus of the present invention, it is important that the sheet-like material is conveyed while being inclined upward by 1 to 90 ° in all or part of the conveying path. This makes it possible to reduce the liquid such as the cleaning liquid remaining on the sheet-like material after cleaning as much as possible, and to reduce energy required in the subsequent drying process. This angle is preferably 5 to 45 °, more preferably 10 to 30 °.
The cleaning roll used in the cleaning apparatus of the present invention is a combination of two or more pairs of rolls on the upper and lower sides of the sheet-like material. It is preferable to comprise from. The roll is preferably a brush roll or a sponge roll that efficiently removes dirt on the sheet-like material. These may be combined. These rolls are preferably rotated in the direction in which the first roll feeds the sheet-like material and the second roll in the opposite direction. By comprising in this way, the stain | pollution | contamination of a sheet-like material can be removed reliably. At this time, it is preferable to provide a bounce prevention guard that prevents the sheet-like material from bounce-up and causing a conveyance failure.
This splash prevention guard is necessary when the rotation of the cleaning brush 3 is the reverse of sheet conveyance (up and down or rotation of one of the brushes on either side), and can also be applied to the cleaning brush 2. 0 to 10 mm from the roll contact having an outer diameter of 20 to 60 mm (A in FIG. 4) (dirt is not removed if less than 1 mm, jam occurs if exceeding 10 mm), and 1 to 20 mm from the roll contact if the outer diameter exceeds 60 mm. (A in FIG. 4) However, the larger the size, the larger the cleaning device, which is not optimal. If the outer diameter is less than 20 mm, dirt accumulates immediately and there is no cleaning effect.
The roll speed is 0.1 to 100 times, preferably 1 to 10 times the transport speed.

In addition, by installing a scraper that removes the cleaning liquid remaining on the sheet-like material after cleaning, the residual cleaning liquid can be further reduced, and the sheet-like material is damaged by the dirt that has been raised from the sheet-like material by the cleaning roll. It has the effect of scraping it off.
In this case, the scraper is preferably constructed so that it can be rinsed with water, alcohol or a mixture thereof. As said alcohol, methanol, ethanol, isopropyl alcohol, etc. are preferable.
One scraper may be used as long as the processing speed is less than 300 mm / min. However, it is preferable to provide three or more scrapers for cleaning at a high speed of 300 mm / min or higher. This scraper is preferably made of a rubber-like elastic material such as NBR (acrylonitrile-butadiene copolymer rubber). More preferably, the material has a deformation elasticity of 0.1 to 100 g / cm. Since the scraper is pushed up due to the viscosity of the cleaning liquid, it is preferable to set the scraper at an angle of 30 to 90 ° with respect to the surface of the sheet-like material in order to improve the wiping ability of dirt.

In the cleaning apparatus of the present invention, it is preferable that one or more wiping rolls for removing the cleaning liquid remaining on the sheet-like material are further provided in front of the scraper. The wiping roll is preferably made of a porous material. The wiping roll is preferably in contact with a plate-like scraper on its side surface in order to prevent the squeezed residue from adhering to the sheet-like material from the side of the roll. The width of the scraper or wiping roll is preferably 1.1 times or more the sheet-like width. By doing so, it is possible to prevent the dirt from going around.
In the cleaning apparatus of the present invention, it is preferable to provide a drying section. The drying means in the drying section is not particularly limited, but for example, hot air drying is preferable.

As the surfactant used in the cleaning apparatus of the present invention, any of anionic, cationic, and nonionic surfactants can be used as long as it does not particularly adversely affect the sheet-like material.
Examples of surfactants that do not affect the sheet-like material include an anionic surfactant such as α-olefin sulfonate, alkyl ether sulfate ester, sulfosuccinic acid alkyl di-salt, alkyl benzene sulfonate, alkyl phosphate ester salt, and dialkyl. Examples include sulfosuccinate.
Examples of nonionic surfactants include ether ester type, polyhydric alcohol type, and polyether-modified silicone. One or more kinds of any of these surfactants can be used as the aqueous cleaning liquid.

The sheet-like material that can be cleaned by the cleaning device of the present invention is not limited as long as it is a sheet-like material that needs to be cleaned, and may be a continuous sheet or a discontinuous sheet, but particularly a rewritable sheet can be suitably cleaned.
After the sheet-like material is supplied to the cleaning device of the present invention from the paper feed roll, the sheet-like material is guided by the guide plate having irregularities and is conveyed on the conveyance path A to the cleaning roll. It is possible to prevent the sheet-like material from coming into line contact with the guide plate and stick to the guide plate due to the influence of the cleaning liquid, so that the conveyance stability can be improved. Further, a cleaning liquid scattering prevention sheet having no gap is provided in the conveyance path for preventing the cleaning liquid from scattering so that the paper feed roll does not come into contact with the cleaning liquid. This prevents the sheet feeding roll from slipping due to the influence of the cleaning liquid, and ensures the stability of conveying the sheet-like material. In addition, it is preferable that this washing | cleaning liquid prevention sheet shall be equivalent or less than the thickness of the sheet-like material to wash | clean. The sheet can be composed of a plastic film, but a polyester film is preferable, and the surface thereof is more preferably coated with a material having a low coefficient of friction such as silicone or fluorine resin. In addition, a sheet jump prevention guard is provided between the cleaning rolls so that the sheet can be pressed when the sheet-like material is turned up in a cleaning roll having a reverse function that rotates in a direction opposite to the conveying direction of the sheet-like material. . Thereby, conveyance failure can be prevented. The prevention guard can be formed of a wire shape such as a 1-2 mm wire mesh, or a corrugated plate material of aluminum or stainless steel. In addition, this prevention guard can be suitably installed in the required location of a conveyance path as needed.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 shows a first embodiment of the present invention. As shown in the figure, the cleaning apparatus 1 includes a paper feed unit on one side of the main body case 100 and a carry-out unit on the other side, and a conveyance path A is provided in the main body case 100 between the paper feed unit and the carry-out unit. Is provided. In this conveyance path A, a pair of upper and lower paper feed rolls 1, a pair of upper and lower first cleaning brushes 2, a pair of upper and lower second cleaning brushes 3, and a pair of upper and lower feed rolls 5 (drive rolls) from the carry-in portion side. Three scrapers and two wiping rolls 7 made of a porous material are formed and arranged toward the carry-out portion. The conveyance path A is provided with an upward inclination of 5 ° toward the carry-out portion.

In addition, the sheet feeding portion of the main body case 100 is provided with a cleaning liquid scattering prevention sheet 13 as shown in FIG. 1 after the paper feeding roll so that the cleaning liquid does not splash on the paper feeding roll. As shown in FIG.
The pair of upper and lower feed rolls 5 is formed of a sponge material roll.

Further, in the conveyance path A between the first cleaning brush roll 2 and the pair of upper and lower second cleaning brush rolls 3, the guide means 4 (see FIG. 4) that prevents the brush roll 3 from being caught and guides the sheet-like material. A sheet jump prevention guard) is provided up to the exit of the cleaning brush.
The guide means is made of a corrugated plate made of aluminum or stainless steel, or a wire mesh of 1 to 2 mm.

  The scraper 6 is NBR (nitrile rubber) and has a deformation elasticity of 0.1 to 100 g / cm and is set at 60 ° with respect to the sheet-like material.

  The cleaning brushes 2 and 3 have a cleaning liquid supply unit 8, and the scraper 6 has a water (alcohol) supply unit 9.

  The cleaning brush roll 2 is a brush roll having a brush wire group in which a plurality of brush wires are radially provided on a rotating shaft, and the cleaning brush roll 3 is a brush wire having a plurality of brush wires radially provided on a rotating shaft. A brush roll having a group, and the brush wire is a wire made of a synthetic resin such as polypropylene, which is a so-called brush hair, and in the case of the same material and substantially the same density, the brush of the second cleaning brush 3 By making the diameter of the wire rod thicker than the diameter of the first cleaning brush 2, the force applied to the surface of the sheet-like material by the tip side of the brush wire rod is changed. Alternatively, the force applied to the surface of the sheet-like material by the tip side of the brush wire can be changed by changing the material of the upper and lower brush wires at substantially the same density. In this way, the brush wire can be set differently so as to change the scraping force in accordance with the state of dirt by changing the diameter, material, density or combination of the wires.

  Further, the cleaning brush 2 paired up and down rotates, for example, in the same direction as the sheet conveying direction, and the cleaning brush 3 paired up and down is the same direction as the sheet conveying direction. Alternatively, the wiping rolls 7 and 8 that rotate in the reverse direction and are adjacent to each other in the conveyance direction rotate in the direction opposite to the conveyance direction of the sheet-like material. In this embodiment, it rotates at a speed 5 times or more that of the transport roller.

  As shown in FIG. 2 (a), the width of the scraper 6 is 330 mm and the sheet width is 297 mm.

  As shown in FIG. 2B, the width of the sheet-like material is 297 mm with respect to the width of 330 mm of the wiping roll 7.

  As shown in FIG. 2C, the side surface of the wiping roll 7 is in contact with the NBR plate-shaped scraper 12.

  In the drying section between the wiping rolls 7, upper and lower guide members (not shown) are provided substantially in parallel on the conveyance path A, and these guide members are plate-like members. Each is provided with an air outlet (not shown) so as to blow air on the front and back of the sheet-like material being conveyed. A guide plate having a wire mesh structure (not shown) is provided below the fan 10.

Next, the cleaning liquid supply unit 8 around the cleaning liquid will be described. As shown in FIG. 1, the rotation shafts of the pair of upper and lower cleaning rollers 2 and 3 are formed hollow, and a plurality of supply holes as supply portions are formed at substantially equal intervals in the length direction of the rotation shaft. Yes. Note that the rotation shaft is pivotally supported by the main body case 100.
One of the rotating shafts is closed, and the other is connected to the cleaning liquid supply pipe by a universal joint or the like. The cleaning liquid supply pipe of the first cleaning brush 2 is connected to a liquid feeding apparatus such as a pump, and the cleaning liquid supply pipe of the second cleaning brush 3 is also connected to a liquid feeding apparatus such as a pump. The cleaning liquid inside is pumped to the cleaning liquid supply pipe.

  The cleaning liquid tank has a substantially box shape in the lower part of the cleaning device, and a drop receiving hole (not shown) is formed in the upper part, and a filter means is provided in the drop receiving hole. The cleaning brushes 2 and 3 are located above the drop receiving holes.

  Therefore, the cleaning liquid sprayed from the supply hole is collected into the lower cleaning liquid tank, and then the cleaning liquid remaining on the surface of the sheet-like material is written down with the scraper 6 and water or alcohol 9, and water or The alcohol is removed, and the wiping roll 7 is also dried by drying in the drying unit 10 to increase the life.

  In the figure, a detecting means for detecting the state of the cleaning liquid in the cleaning liquid tank and water (alcohol) can be provided. For example, a liquid meter for detecting the amount of the cleaning liquid or a concentration meter for detecting the concentration of the cleaning component. Various detection means are used.

  The supply device includes a storage unit that stacks and stores sheet-like objects, and a supply drive unit that continuously supplies the sheet-like objects positioned at the top of the storage unit one by one into the sheet feeding roll 1 one by one.

 The sheet-like material is an industrial rewritable sheet described in the background art above, and a heat-sensitive layer and a protective layer are provided on one side surface of a sheet body made of resin, and display information such as characters is repeatedly described by heat. For example, when heated to a certain temperature and rapidly cooled, the portion develops color, and when heated to a temperature lower than the above certain temperature and rapidly cooled, the color disappears. An IC tag having a non-contact IC module is provided on the side surface, and the IC tag is covered with a protective layer. The protective layer covers the entire sheet body or a part thereof.

  Subsequently, the cleaning liquid remaining on the surface of the sheet is removed with water, alcohol, or a mixture thereof. As the alcohol, a mixture with methanol, ethanol, isopropyl alcohol or water which does not affect the sheet-like material can be used. These can easily rinse the remaining surfactant.

The inclination of the conveyance path A is provided to make it difficult to leave the cleaning liquid in the next process, and this angle is adjusted according to the viscosity of the cleaning liquid.

The planar guide plate 11 is preferably formed into a concavo-convex portion 11a that makes line contact since the sheet-like material sticks when the cleaning liquid is interposed.

The sheet jump prevention guide 4 is provided with a linear guide so as not to be affected by the reversing cleaning brush 3, so that the cleaning efficiency is not lowered and the sheet-like material can be prevented from being broken.

  It was found that the scraper 6 must be three or more to perform high-speed processing.

In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, in the embodiment, an example in which two pairs of cleaning brush rolls are provided is shown, but three or more pairs may be used. Four or more pairs may be used instead of three pairs of scrapers. Moreover, the brush wire can use various materials. Furthermore, the sheet-like material is not limited to that of the embodiment, and may be a resin bag or a metal plate that forms a sheet shape.
The method using a surfactant has a problem of maintenance cost, and when the sheet is wiped at a temperature of steam, the oil can be lifted from the sheet and removed.
The cleaning liquid supply unit 8 in FIG. 1 is a steam supply unit.
If necessary, 9 in FIG. 1 is also recommended, but it may be a steam supply unit.
In the present invention, the sheet-like material is preferably a sheet in which the amount of sag of the horizontal projecting portion is in the range of 0 to 10 mm when the sheet is placed on the table and projected 10 cm horizontally from the table.

It is sectional drawing of the main body case which shows Example 1 of this invention. It is a top view same as the above, (a) Scraper, (b) Wiping roll, (c) It is explanatory drawing of a side scraper. It is guide plate shape cross section explanatory drawing. It is explanatory drawing of a sheet splash prevention guard mechanism.

Explanation of symbols

A Sheet transport path B Sheet 1 Feed roll (transport roll)
2 First cleaning brush section 3 Second cleaning brush section 4 Sheet splash prevention guard 5 Drive roll 6 Scraper 7 Wiping roll 8 Cleaning liquid supply section 9 Water (alcohol) supply section
10 Drying fan
11 Uneven guide plate
12 Side scraper
13 Anti-scattering sheet
100 Washer body

Claims (3)

A cleaning apparatus having a cleaning roll for cleaning a sheet-like material using a cleaning liquid containing a surfactant has the following configuration .
(1) The sheet-like material is conveyed while being inclined upward by 1 to 90 ° in all or part of the conveying path.
(2) It has three or more scrapers for removing the cleaning liquid remaining on the sheet-like material.
(3) The scraper can be rinsed with water and / or alcohol.
(4) The scraper has a deformation elasticity of 0.1 to 100 g / cm and is in contact with the surface of the sheet at an angle of 30 to 90 °.
(5) The scraper has a width of 1.1 times or more the sheet width. .
(6) It has a wiping roll for removing the cleaning liquid remaining on the sheet-like material.
(7) The wiping roll has a width of 1.1 times or more the sheet width.
(8) The wiping roll has a scraper on its side surface. The cleaning apparatus according to claim 1, wherein the carry-in section side paper feed section of the transport path includes a cleaning liquid scattering prevention sheet . The cleaning apparatus according to claim 1, wherein the cleaning roll on the carry-out side of the cleaning roll has a function of reversing the transport direction in the upper and lower directions and is provided with a sheet jump prevention guard.

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