JPS635898A - Press roller - Google Patents

Abstract

PURPOSE:To improve the liquid elimination efficiency by forming a roller by laminating a thin disk on which plural hole parts and groove parts have been worked, in the axial direction, forming the hole part to a communicating hole, and also, forming the groove part to a minute hole for communicating with the surface of the roller. CONSTITUTION:A thin disk 1 is prepared by a stainless steel plate material or a plastic material, a hole part 1c, a center shaft hole 1d, and a key groove part 1e are punched, and also, by a chemical etching method or a forming work, plural groove parts 1b are formed. Subsequently, a roller having a communicating hole part 2 is formed by laminating the thin disk 1, the groove part 1b is formed so as to communicate with the communicating hole 2 from the surface of the roller, and a liquid which is pressed and separated by the roller through a sliding lead part 4 is discharged to the outside. In this way, a liquid portion of a liquid contained substance which is being pressed is discharged efficiently from many minute holes which have been formed on the surface of the roller.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for squeezing a liquid-containing substance (hereinafter abbreviated as liquid-containing substance) such as a liquid-containing fibrous substance, a sponge, or a slurry-like substance. It relates to a roll that squeezes out liquid.

[Conventional technology] Conventional - common press rolls include: ■ A roll made of steel such as stainless steel on the lower side and a rubber roll on the upper side; ■ A roll made of rubber on both the upper and lower sides; ■ A roll made of rubber on both the upper and lower sides; In both cases, steel rolls have been used.

Also, as a special one, ■The upper roll is made of rubber and the lower roll is made of steel, and 3
- A method that has a large number of holes of ~6 φ and uses vacuum suction during compression through these holes, and another special method,
Either the upper or lower roll is a roll made of laminated nonwoven fabric,
The mating roll is also made of steel or rubber.

[Problems to be Solved by the Invention] - Generally, a method for reducing the liquid content by squeezing a liquid-containing substance is a method of reducing the volume of the liquid-containing substance by squeezing and squeezing out the liquid. In the general methods shown in [Prior art] ■, ■, and ■, the liquid is squeezed out by sandwiching the liquid-containing substance between rolls, but in this case, even if the liquid is squeezed, the solid content remains in the squeezed area. The liquid present in the gap cannot be removed, and the liquid content after squeezing increases accordingly.

The methods that have been proposed so far to improve this are [
Prior art] Methods ① and ②. This [prior art]
The method shown in (2) is a method in which a relatively large number of holes are provided on the surface of the pressing part of the pressing roll part, and the liquid is sucked by applying negative pressure to the holes during pressing. However, in this method, the size of the holes cannot be made much smaller than the actual mechanical processing point, and the intervals between the holes are relatively wide. For this reason, this method is effective for deliquifying raw materials such as cotton and wool by pressing with a wide gap between the rolls, but it is a negative method for relatively thin materials such as woven and knitted fabrics of textile products. Since the suction effect of the liquid due to pressure only affects the area around the hole, the effect of reducing the liquid content by this method is reduced, and the suction effect of the liquid is applied only to the area around the hole and other parts of the product to be squeezed. It had the drawback of causing unevenness.

[Prior art] Method (2) involves laminating disk-shaped nonwoven fabric sheets 9 in the axial direction to form a roll as shown in Fig. 4, so that the liquid-containing material recovers its shape after passing through the most pressing section. This is a method of sucking liquid through nonwoven fabric, and it has a corresponding effect. However, in this method, the above-mentioned effect does not occur at the time of maximum compression, but the liquid is absorbed into the nonwoven fabric during the process of relaxing the compression, and the effect is small.

Furthermore, when the liquid contains a small amount of solid content or a high viscosity content, it has the disadvantage that the solid content or high viscosity content clogs the inside of the nonwoven fabric, gradually reducing its effectiveness.

The present invention proposes a squeezing roll that improves the drawbacks of the prior art and efficiently squeezes out liquid from a liquid-containing substance.

[Means to solve the problem] This invention will be explained with reference to the drawings.

At least one of the pair of compression rolls is constituted by a roll having thin disks 1 laminated in the axial direction on the main part that performs compression as shown in FIG.

As shown in FIG. 2, the thin disk l has a plurality of holes 1c in a portion thereof, and a plurality of grooves 1b extending from the outer edge 1a of the thin disk to each of the plurality of holes 1c. The thickness t of the thin disk 1 is usually 0.2 to 1011I11, and 0
．． 5 to 3 mra is more preferable. The pitch of the grooves 1b with respect to the thickness t of the thin disk l is as follows at the outer edge 1a:
It is usually 0.2 to 5 times t, more preferably 0.5 to 2 times. The width of the groove tb is usually 0.1 to 1.5 times t, more preferably 0.2 to 0.5 times. Further, the depth of the groove portion 1b is usually 0.05 to 0, g times t, and 0.1 to 0.
5 times is more preferable. This thin disk l is laminated to form a side disk 3.
When tightened, a communication hole 2 passing through the laminated thin disk I and the side disk 3 is formed, and a groove 1b is formed on the roll surface as shown in the enlarged view A° of part A, which leads to a large number of communication holes 2. A fixed guiding pressure is formed to form micro holes in the side disk 2 on the side surface of the roll, and is sequentially slid and firmly connected to a portion of the plurality of communication holes 2 in the side disk 2 on the side surface of the roll as the roll rotates. Section 4 is provided.

The laminated thin disk plate 1 can be manufactured by using a metal or plastic material and processing a plurality of grooves 1b using a chemical etching method.

Alternatively, the laminated thin disk l may be made of plastic, and the outer peripheral portion 1a, hole portion 1c, and groove portion 1b may all be manufactured by a plastic processing method such as injection molding or compression molding. can.

[Function] When the roll shown in Fig. 1 and a simple rubber roll constitute a pressing roll, and the pressure guiding part 4 is connected to a vacuum device and the pressing device is operated, the volume of the liquid-containing substance is reduced by pressing. The amount of liquid is squeezed out, and during the squeezing process, the liquid is efficiently removed from the micro holes on the surface of the laminated thin disk l created by the grooves 1b in Figure 2, so that after passing through the squeezing device. The liquid content of the liquid-containing substance can be lowered.

Also, two rolls shown in Fig. 1 are used, and they are rolled as roll R.
1. Roll R2 is paired with roll R2 to form a compression roll, and the pressure guiding part 4 of each roll is connected to the compressed air source for roll R1.The roll R2 is exposed to the atmosphere. Release: +
By connecting in any combination of //-1, the effect can be further enhanced.

Furthermore, if you want to prevent clogging of the roll surface on the vacuum suction or atmospheric release side, you can install another pressure guide part at an angular position away from the roll's squeezing angle position and connect it to a pressurized air source. It can also be washed.

[Example 1] This example describes an embodiment in which the thin disk plate shown in FIG. 2 is manufactured by a chemical etching method.

A stainless steel plate material (5US-304 or 5O3-316) with a thickness of 0.5 to 1.6 ff1 m is punched out to have an outer diameter 0.5 to 1.0 mm larger than the required outer size. After that, the hole 1c, the center shaft fitting hole 1d, and the key groove 1e are punched out. After coating the entire surface of this thin disk l with a photosensitive resin liquid in a dark room and drying it,
A photographic film with a pattern of light-shielding parts and light-transmitting parts is stacked on one or both sides of the stainless steel plate, and light is irradiated from above. As the photosensitive resin liquid, one generally used for etching printed wiring boards is used. By doing this, the applied photosensitive resin changes into a material that is insoluble in a specific organic solvent by irradiation with light at locations other than those that should become grooves. However, since light is not irradiated to the groove portions, the photosensitive resin does not undergo a photochemical reaction and is dissolved and removed by a specific organic solvent. When the stainless steel plate pretreated in this way is immersed in a chemical etching solution such as ferric chloride, hydrochloric acid, or sulfuric acid, the portion where the photosensitive resin has been dissolved will come into direct contact with the chemical etching solution and dissolve, forming the groove 1b. Ru.

This groove portion 1b is formed to gradually become thicker from the outer edge portion 1a to the hole portion 1c according to the light-shielding film pattern, so that foreign matter will not become clogged in the middle of the R portion ib.

The thus processed thin disks 1 are stacked and fixed to the shaft 6 by pressure contact with the side disks 3 and fasteners 5, and then finished by cutting and polishing the outer diameter to a predetermined size. By doing so, a roll having a smooth surface and an extremely large number of micropores can be produced.

[Example 2] In this example, the thin disk I shown in Fig. 2 is made of plastic.
An embodiment of manufacturing by injection molding or compression molding will be described. As in the previous Example I, the shape of the thin disk 1 in FIG. 2 is reversed to form a plastic plate with dimensions 0.5 to 1.0 mm larger than the required outer diameter of the roll, as shown in FIG. 3. The mold 7.8 is manufactured by machining into a shape that can be divided into two parts and taken out. At this time, the reversed portion tbb of the groove portion 1b is processed using a metal engraving machine, but in this example! As described above, the grooves are machined so that the convergence and depth of the grooves gradually increase from the inverted portions 1a, a of the outer edge 1a to the inverted portion Ice of the hole 1c. The pitch, width and depth of the grooves are almost the same as in the previous example - (2). After such a plastic mold is manufactured in advance, injection molding or compression molding of plastic is performed using the mold to obtain the required number of thin plastic discs l. After this, a roll is manufactured by the same method as in Example 1.

Plastic materials include thermoplastic resins such as polyamide, polyester, polycarbonate, polyacetal, and polyvinyl chloride, or thermosetting resins such as epoxy resins and phenolic resins, and the mechanical and chemical properties of the liquid-containing material are compressed. , temperature, etc., as appropriate.

"Effects of the Invention" The squeezing roll of the present invention has an extremely large number of micropores on the roll surface, which allows the liquid-containing material being squeezed to be treated by vacuum suction, air pressure, or a combination of both. Since the liquid content of the liquid-containing material during squeezing can be efficiently removed by the micropores, the residual liquid content in the liquid-containing material after the treatment of the present invention can be extremely reduced.

In addition, in the manufacturing method of the thin disk l, by adopting a chemical etching method, a plastic injection molding method, or a compression molding method, a large number of micro grooves can be uniformly manufactured and processed, and the groove structure can be guided from the outer edge. By sequentially increasing the width and depth of the grooves as they reach the pressure side holes, clogging in the roll micropores can be made less likely to occur.

Furthermore, in order to prevent clogging on the roll surface on the vacuum suction or atmospheric release exhaust side, provide another pressure guiding part at an angular position separate from the pressure guiding part at the roll compression angle position and connect this to the pressurized air source. By doing so, backwashing can also be removed.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram illustrating the function of the press roll of the present invention. FIG. 2 is a structural diagram of the thin disk I explained in FIG. 1. Third
The figure is a structural diagram of a plastic mold explained in the manufacturing method of the present invention. FIG. 4 is a structural diagram of a conventionally used nonwoven fabric roll. ■ Thin disk 1a... Outer edge tb of thin disk 1...
・Groove portion 1c of thin disk 1... Hole portion laa of thin disk 1・
... la inversion part Ibb of plastic mold...
--"--tb inversion part Ice... --//
--1c Inversion part 2...Communication hole part 3...Side disk 4
...Pressure part 5...Fastener 6...Shaft 7.8...
Plastic mold 9...non-woven fabric sheet

Claims (1)

[Claims] At least one roll of a pair of pressing rolls (
(b) A plurality of holes are provided in a portion of the thin disk, and a plurality of holes extend from the outer edge of the thin disk to each of the plurality of holes. Provide a book groove,
(c) By stacking the thin discs, the holes inside the thin discs are made into communication holes, and the grooves are made into a large number of micro holes that communicate with the communication holes from the roll surface, and (d) the plurality of holes are formed on the side surface of the roll. A fixed pressure guiding part is provided that slides and joins a part of the communicating holes as the roll rotates, and )
A press roll characterized in that it is configured according to the requirements.