JP3332371B1 - Method for manufacturing component members of gaming machines - Google Patents

Abstract

The present invention provides a method for manufacturing a component of a gaming machine, which can efficiently and sufficiently remove water during a dehydrating press and obtains a product having a necessary strength as a component of the gaming machine. SOLUTION: In a method for manufacturing a component member of a gaming machine, a material mixing step of mixing and dispersing paper fiber 41, chemical fiber 43, and binding material 42 in water to obtain a mixed fiber dispersion liquid, and filling a molding die. A primary dehydration press step of obtaining a primary dehydration press molded product by pressing the mixed fiber dispersion,
A secondary dewatering press step of dewatering the paper fiber and the chemical fiber with or after bonding with the bonding material, so that the bonding material leaves a communication space as a drain hole H between the fibers. At the same time as bonding the fibers, the fibers are dewatered from at least the drain holes in the secondary dewatering press step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a component of a game machine, and more particularly to a method of manufacturing a component of a game machine formed by combining paper fibers and chemical fibers.

[0002]

2. Description of the Related Art Conventionally, in a game machine such as a pachinko game machine, components such as a game board and a game machine frame which are a part of the game machine are formed by members formed of paper fiber and chemical fiber. There are things that are. As a method of manufacturing the components of this gaming machine, for example, a paper fiber mainly composed of waste paper, a chemical fiber for obtaining strength, and a bonding made of powdery or granular thermosetting resin or thermoplastic resin, etc. The mixed fiber dispersion is prepared by mixing and dispersing the materials in water to prepare a mixed fiber dispersion, and then the mixed fiber dispersion is filled in a mold, and the filled mixed fiber dispersion is dewatered by pressing, and the paper There is a method of manufacturing a component member of the gaming machine by performing a dehydration pressing step in which fibers and chemical fibers are bonded by a bonding material a plurality of times.

However, in the above-described production method, paper fibers, chemical fibers,
Alternatively, there is a problem that the space between the paper fiber and the chemical fiber is closed by the binding material made of the thermosetting resin, the thermoplastic resin, or the like, so that the moisture is not easily removed. In particular, in the case where a portion where moisture is poorly leaked partially occurs, there is a possibility that a molded product may burst at the portion where the moisture is not well leaked during the dehydration pressing process, or there may be a problem in production, There was a possibility that the strength was reduced.

When a thermoplastic resin is added as a bonding material for bonding the paper fiber and the chemical fiber, a powdery or granular thermoplastic resin is excessively added in order to enhance the function of holding the fibers together. In many cases, the thermoplastic resin is bonded to the mixed fiber dispersion so that the thermoplastic resin is widely distributed in the mixed fiber dispersion and closes the fibers. There was a possibility.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and makes it possible to efficiently and sufficiently remove water at the time of dewatering press, and to reduce adverse effects on production such as bursting of molded products. It is an object of the present invention to provide a method of manufacturing a component of a gaming machine, which can prevent a product as much as possible and obtains a product having a necessary strength as a component of the gaming machine.

[0006]

That is, a first aspect of the present invention relates to a method of manufacturing a component of a gaming machine constituted by combining at least paper fiber and chemical fiber.
A material mixing step of mixing and dispersing the paper fiber, the chemical fiber, and the binding material in water to obtain a mixed fiber dispersion, filling the mixed fiber dispersion in a mold, and pressing the filled mixed fiber dispersion. A primary dehydration press step of obtaining a primary dehydration press molded article, and after the primary dehydration press step, a secondary dehydration press step of dehydrating again while bonding the paper fiber and the chemical fiber with a bonding material or after bonding. ,
The bonding material is a chemical fiber for bonding different from the chemical fiber, and is subjected to a heat treatment after the primary dehydration press step, before the secondary dehydration press step or during the secondary dehydration press step, and is bonded by the heat treatment. The fibers are bonded by fusing the chemical fibers for use, and the fibers are bonded so as to leave a communication space as a drain hole between the fibers. The present invention relates to a method for manufacturing a component member of a gaming machine, wherein the component is dewatered from a hole.

According to a second aspect of the present invention, the bonding of the fibers by the bonding material is performed at the entangled portions of the fibers including the chemical fibers for bonding, and the non-bonded portions constitute drain holes. A method of manufacturing a component of a gaming machine according to claim 1.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing an embodiment of a gaming machine having a component manufactured by the manufacturing method of the present invention, and FIG. 2 is a rear view of the gaming board of FIG. FIG. 3 is a block diagram showing a manufacturing process in a method of manufacturing a component of a gaming machine according to one embodiment of the present invention, FIG. 4 is a schematic diagram showing a material mixing process, and FIG. 5 is a schematic diagram of a primary dewatering press process. , FIG. 6 is a partially enlarged schematic view of a primary dewatering press molded product after the primary dehydrating press step, FIG. 7 is a schematic view of a drying step, FIG. 8 is a schematic view of a secondary dehydrating press step, and FIG. 9 is a schematic view of FIG. FIG. 10 is a plan view, FIG. 10 is a partially enlarged schematic view of a secondary dewatering press molded product after the secondary dehydrating press step is completed, FIG. 11 is a schematic view of a cutting step, and FIG. 12 is a view schematically showing a wastewater treatment apparatus. Further, FIG. 13 is a schematic perspective view of a core-sheath fiber used as a chemical fiber in the production method of another embodiment, and FIG. 14 is a schematic view of a side-by-side composite fiber used as a chemical fiber in the production method of another embodiment. Perspective view and FIG.
FIG. 16 is a partially enlarged schematic view of a primary dewatering press molded product after completion of the primary dehydration press step of the example using the core-sheath type fiber of FIG. 13, and FIG. 16 is a secondary dehydration press after completion of the secondary dehydration press step of the example. It is the elements on larger scale schematic diagram of a molded article.

A gaming machine 10 shown in FIG. 1 has constituent members obtained by one embodiment of the manufacturing method of the present invention, and at least some of the constituent members are obtained by mixing and dispersing at least paper fibers and chemical fibers in water. The mixed fiber dispersion liquid is subjected to dehydration press molding (primary dehydration press step and secondary dehydration press step described later),
It consists of a molded product of the dried mixed fiber. The paper fiber and the chemical fiber are bonded by fusion bonding of the bonding chemical fiber by a heat treatment in a secondary dehydration pressing step in a state where the fibers are entangled with each other, and adhesion by a water-soluble adhesive. The components of the gaming machine 10 are conventionally strength holding components formed of wood, resin, or the like. In particular, the gaming board 11, the gaming machine frame 12, the ball tray 13
It is preferable to use at least one member selected from the following. In this embodiment, the game board 11 and the game machine frame 12
Are formed of a molded product of the mixed fiber. FIG.
The rear surface of the game board 11 is shown.

[0010] The paper fiber may be either new paper fiber obtained from new paper alone, or paper once on the market, that is, only paper fiber obtained from waste paper, or fiber containing both of them. It is preferable to use only paper fibers containing fibers, preferably used paper fibers, because not only can a less expensive game machine be obtained, but also the recycling and effective use of waste can be facilitated. Waste paper fibers are disintegrated by immersing old magazines such as old newspapers, old magazines, advertisements, waste copy paper, etc. in water (including hot water), as described in detail in the manufacturing method of gaming machine components described later. It is made up of fibers.

[0011] Among the recycled fibers, semi-synthetic fibers, synthetic fibers, and inorganic fibers, the chemical fibers are easily compatible with water, have high strength, are excellent in abrasion resistance, chemical resistance, weather resistance, and when wet. Also, a plurality of types of chemical fibers that are easy to dry are selected and used. Further, in the plurality of types of chemical fibers, at least one type of chemical fiber has a lower melting point than other types of chemical fibers, and the chemical fiber for binding in which the low-melting chemical fiber acts as a bonding material. It has been. Thereby, when the paper fiber and the chemical fiber (including the chemical fiber for binding) are entangled with each other and the heat treatment is performed at a temperature at which the chemical fiber for binding is melted, the melting of the chemical fiber for binding is performed. Each fiber can be bonded together by wearing.

Examples of the chemical fibers include polyethylene fibers, polyester fibers, polypropylene fibers, polyamide fibers, and poly-meta-phenylene terephthalamide fibers. In addition, when considering the reuse of the constituent members of the gaming machine 10 composed of these chemical fibers and paper fibers,
As the bonding chemical fiber, a thermoplastic chemical fiber such as the polyethylene fiber, which can be melted again by the heat treatment and re-disintegrate each other, is most suitable. Further, the chemical fiber having heat resistance, flame resistance and insulation properties is suitable for a game machine using electricity such as a pachinko game machine.

The chemical fiber (including the chemical fiber for bonding) may be a chemical fiber composed of a plurality of layers having different melting points from each other. As shown in FIG. 13, the chemical fiber composed of a plurality of layers includes, for example, a core portion 51 corresponding to the inner layer of the chemical fiber and a sheath portion 52 corresponding to the outer layer thereof. There is a core-sheath fiber 50 covered by 52. In the core-sheath fiber 50, the core portion 51 and the sheath portion 52 have different melting points. Here, the sheath portion 5
The melting point of 2 is lower than the melting point of the core portion 51, and the sheath portion 52 functions as a bonding chemical fiber (bonding material) for bonding the fibers.

Specifically, as an example of the core-sheath type fiber 50, a fiber having a core portion 51 made of polyester fiber and a sheath portion 52 made of polyethylene fiber can be given. As described above, the use of the polyester fiber and the polyethylene fiber, which are thermoplastic chemical fibers, facilitates the reuse of the constituent members (molded products) as described above. In the above description, the inner layer portion of the chemical fiber composed of a plurality of layers is constituted by one layer. However, the present invention is not limited to this, and the inner layer portion includes two or more layers.
A total of three or more layers may be used.

Further, as shown in FIG. 14, two types of chemical fiber layers 56 and 57 having different melting points are used as the chemical fibers composed of a plurality of layers so that their joining surfaces are substantially straight (substantially flat). Side-by-side type composite fiber 55 laminated on the substrate. In the illustrated side-by-side type composite fiber 55, the melting point of the chemical fiber layer 57 on the right side of the figure is lower than the melting point of the chemical fiber layer 56 on the left side, and the chemical fiber layer 57 is bonded to bond the fibers. Function as chemical fiber (bonding material).

Specifically, as an example of the side-by-side type composite fiber 55, there is a layer in which polyester fiber is used for the layer 56 having a high melting point and polyethylene fiber is used for the layer 57 having a low melting point. As described above, the use of the polyester fiber and the polyethylene fiber, which are thermoplastic chemical fibers, facilitates the reuse of the constituent members (molded products) as described above. In the above side-by-side type composite fiber,
Although it has a two-layer structure in which two types of chemical fiber layers are bonded, the present invention is not limited to this, and a structure of three or more layers in which three or more types of chemical fiber layers are laminated may be used.

The components of the gaming machine 10 are subjected to a dewatering press treatment of the mixed fiber dispersion obtained by mixing and dispersing the paper fibers (including waste paper fibers) and the chemical fibers in water, as described in detail below. (A primary dehydration press step and a secondary dehydration press step are performed). Further, after the dehydration press treatment, it may be cut as needed to obtain a desired shape. Further, in the case where decoration such as a pattern is required on the surface, such as the game board 11, the surface of a molded product made of a mixed fiber of the paper fiber and the chemical fiber is provided.
The decorative sheet material is stuck.

In the gaming machine 10 having the above-described structure, the paper and chemical fibers forming the constituent members are useful for reusing and effectively using paper products such as old magazines. The entanglement of the chemical fibers for bonding by heat treatment are combined by cooling and solidification by cooling,
Strength equivalent to that of a member made of wood, resin, or the like is obtained. In addition, in the process of obtaining the product (constituent member), by adding a water-soluble adhesive described below as needed, the bonding between the fibers is further strengthened,
The strength of the product may be increased.

Next, an embodiment of a method for manufacturing a component of a gaming machine according to the present invention will be described. The manufacturing method according to the present invention relates to a method for manufacturing components of a gaming machine such as the gaming board 11, the gaming machine frame 12, the ball tray 13, and the like. As shown in FIG. 3, the manufacturing method includes a material mixing step, a primary dewatering press step, a drying step, and a secondary dewatering press step, and further includes a cutting step in this embodiment.

In the material mixing step (raw material preparation step), FIG.
As shown in (1), a mixed fiber dispersion liquid in which at least chemical fibers are mixed and dispersed in water with paper fibers is prepared. In this example, as described in detail below, a paper fiber dispersion and a chemical fiber dispersion were separately prepared, temporarily stored in their respective storage tanks, introduced into a mixing device at a required ratio, and mixed. To obtain a mixed fiber dispersion.

First, the preparation of the paper fiber dispersion will be described.
As a raw material of the paper fiber, new paper or used paper is used. However, it is preferable to use the used paper including the used paper or only the used paper in terms of the reuse of waste and the economic efficiency. Hereinafter, a case will be described in which mainly used paper made of old magazines such as comic books, telephone directories, and weekly magazines is used as a raw material of paper fibers. The page sticking portion located on the back portion of the old magazines is cut and separated from the page portion by a cutting machine to remove glue, stapler needles and the like, and a paper portion corresponding to the page portion is selected (S1). The glue and stapler needle are not only a hindrance to producing a good molded product from waste paper fiber, but also make cleaning of the production apparatus cumbersome, so that they are selected in advance from the page portion. At that time, in order to remove the glue and the needle reliably, it is preferable to cut the old magazines at a predetermined width, usually about 1 cm, from the back portion. The cutting and separating are performed by arranging magazines on an automatic feeder such as a conveyor so that a page sticking (adhering) side is in the same direction. This operation is performed continuously by passing through the paper section, whereby the page sticking section with glue or needle is separated from the page section (paper section) and automatically sent to the garbage storage section. It is preferable from the viewpoint of efficiency. The cut pieces of waste paper with glue or needles can also be used as fuel in a subsequent drying step.

When new paper is used as a raw material of the paper fiber, the cutting and sorting (S1) is not required. When new paper and old magazines are used, the following weighing is performed after the cutting and sorting (S1) is performed on old magazines, and the cutting and sorting (S1) is performed on new paper. Without being performed, the next weighing is performed.

The paper section is weighed in a required amount (S2), put into a mixer called a pulper together with a required amount of water, mixed, and defibrated (S3). Water is supplied from a water tank (S4). The ratio of paper and water is determined so that the paper fibers are easily disintegrated.
It is preferable that the weight percent of the paper is about 0.5 to 15 weight percent based on the weight percent. As an example, a case where four pachinko game boards are manufactured is shown.
Inject 10508 liters of water for 5 kg. Of course, the proportion of paper is not limited to the above range. Due to the mixing in the pulper, the paper is loosened into a fibrous form and becomes a porridge (porridge) -like paper fiber dispersion. The paper fiber dispersion is temporarily stored in the paper fiber dispersion storage tank (S5). The water for disintegrating the paper fibers may be room temperature, but if it is hot water of about 30 ° C. to 100 ° C., the paper will be loosened smoothly into fibers. However, in the case of using hot water, the higher the temperature of the hot water, the more easily the printing ink on the used paper oozes out.

Since the paper fiber dispersion contains unnecessary substances such as glue, needles, dust and the like mixed in by the cutting and sorting, the paper fiber dispersion is stored in the paper fiber dispersion storage tank (S5). Before that, it is preferable that unnecessary substances are removed by passing through a separator, a cleaner, a screen, or the like (S3a). In particular, in the case of reusing a component made of a molded product of paper fiber and chemical fiber once used in a gaming machine, for example, when reusing the gaming board 11 of the gaming machine 10 in the present invention,
The game board has a large number of members such as decorative sheets, nails, and plastics, and it is not easy to completely remove those members in advance. Unnecessary matter removal (S3a) by a separator or the like becomes more important.

The chemical fibers are also measured (S6).
The required amount of water supplied from the water tank (S4) is charged into another pulper (mixer) together with the required amount of water and mixed therewith, whereby the mixture is mixed with water and disintegrated and dispersed (S7) to form a chemical fiber dispersion. The chemical fiber dispersion is temporarily stored in the chemical fiber dispersion storage tank (S8). One pulper may be used alternately for waste paper fiber and chemical fiber, alternately with the target fiber. The thickness of the chemical fiber is 2-5.
The denier and length are preferably about 3 to 6 mm. In this example, two types of chemical fibers are used, and one of the chemical fibers (chemical fibers for bonding) has a thickness of 2 denier and a length of 5 m.
m, polyethylene fiber having a melting point of 110 ° C. is used, and the other chemical fiber has a thickness of 2 denier and a length of 5 m.
m, a polypropylene fiber having a melting point of 130 ° C. was used. If the length of the chemical fiber exceeds 6 mm, the fiber is liable to be entangled too much, and becomes a dumpling state, so that the fiber cannot be easily dispersed. If the ratio of the chemical fibers obtained by adding the two types is 0.1 to 5% by weight with respect to 100% by weight of the total of the two types of chemical fibers and water, these chemical fibers become water. Well dispersed. For example, in an example in which four game boards are formed, the two types of chemical fibers 8 are used.
1 kg is dispersed in 13419 liters of water. Of course, the types and ratios of the chemical fibers are not limited to the types and the ranges.

Instead of the two types of chemical fibers, only one type of the core-sheath type fiber 50 or the side-by-side type composite fiber 55 composed of the plurality of layers may be input. Even when the core-sheath type fiber 50 is charged, the core-sheath type fiber 50 preferably has a thickness of 2 to 5 denier and a length of about 3 to 6 mm. As a specific example of the core-sheath type fiber 50, the inner layer (core portion) 51 is formed of a polyester fiber having a melting point of 130 ° C., and the outer layer (sheath portion) 52 is formed of a polyethylene fiber having a melting point of 110 ° C. And a denier of 2 deniers and a length of 5 mm.
As for the mixing ratio of the core-sheath type fiber 50 and water, the ratio of the core-sheath type fiber 50 to the total 100% by weight of the core-sheath type fiber 50 and water becomes 0.1 to 5% by weight.
The core-sheath fiber 50 is well dispersed in water.

Further, the side-by-side type composite fiber 55
Is preferably 2 to 5 denier and 3 to 6 mm in length. As a specific example of the side-by-side type composite fiber 55, the melting point is 130.
And a polyethylene fiber having a melting point of 110 ° C. and a thickness of 2 mm.
Denier and those having a length of 5 mm can be mentioned. As for the mixing ratio of the side-by-side type composite fiber 55 and water, similarly to the core-sheath type fiber 50, the side-by-side type composite fiber 55 is converted into the total of the composite fiber 55 and water by 100%.
If it is 0.1 to 5% by weight with respect to the weight%,
The side-by-side type composite fibers 55 are well dispersed in water.

The paper fiber dispersion liquid and the chemical fiber dispersion liquid are introduced into the mixing device from the respective storage tanks in a required amount (S9), and are mixed there, where the used paper fiber and the chemical fiber are uniformly dispersed in water. A fiber dispersion is produced. At that time, paper fibers are already dispersed in the paper fiber dispersion, and chemical fibers are dispersed in the chemical fiber dispersion, and a mixed fiber dispersion is produced by mixing the dispersions. And the chemical fiber dispersion can be freely set, and the resulting molded article can have a desired strength. In general, paper fibers that have been recycled many times cause a decrease in strength. Therefore, by changing the mixing ratio of the paper fiber dispersion and the chemical fiber dispersion to increase the ratio of the chemical fibers, the strength uniformity of the molded article is maintained. Can be easily performed.

When the concentration of the fiber component (paper fiber and chemical fiber) in the mixed fiber dispersion is 0.5 to 7% by weight, both fibers are easily dispersed well in water, which is more preferable. The ratio of paper fiber to chemical fiber is 9: 1 by weight.
~ 7: 3 is preferred. If the content of the chemical fiber is less than 10%, a product having a sufficient strength (final molded product) cannot be obtained. In this example, 325 kg of paper fiber, 81 kg of chemical fiber, the total amount of water is 23927 liters, and the weight concentration of the fiber component is about 1.
It is 7%.

Furthermore, if the ratio (weight ratio) of the binding chemical fibers to be melted (including a layer having a low melting point of a plurality of chemical fibers) is set to be 30% or less, a description will be given later between the fibers. A drain hole (communication space or gap) can be sufficiently secured, and at least the dewatering property at the time of the secondary dewatering press is improved. Also, in order to reuse the product once used in the amusement machine, when the product is put into the pulper and mixed, the fusion bonding by the melt-solidified chemical fiber (bonding chemical fiber) is released relatively easily. (Disintegration). Of course, the proportions of fiber, paper fiber and chemical fiber are not necessarily limited to the above ranges.

The reason why the paper fiber dispersion liquid and the chemical fiber dispersion liquid are separately prepared and temporarily stored in the storage tank as described above is that the ratio of the paper fiber and the chemical fiber dispersed well in water is different. In general, chemical fibers are harder to disperse in water than paper fibers. Therefore, a lower fiber concentration in water than in the case of paper fibers results in better fiber dispersion. Therefore, a paper fiber and a chemical fiber are separately mixed with water to prepare a dispersion, and then a mixture of the two dispersions at a predetermined ratio can obtain a mixed fiber dispersion in which the paper fiber and the chemical fiber are well dispersed. .

Further, the mixed fiber dispersion of the mixing device may contain a papermaking adhesive, a fixing agent, a water-proofing agent, a defoaming agent, and a water-soluble agent for improving the dewatering property in the primary dewatering press step and the secondary dewatering press step. An appropriate amount of an agent such as a paper strength enhancer (hereinafter referred to as a water-soluble adhesive) is appropriately added. For example,
If polyethylene oxide is added to the mixed fiber dispersion as a papermaking adhesive, the fibers (paper fiber and chemical fiber) can be uniformly dispersed in water, and the mixed fiber dispersion in the primary dewatering press step and the secondary dewatering press step can be used. The dewatering property of the product can be improved, and a good-form product having a uniform fiber distribution in the product can be obtained. Further, by adding the water-soluble adhesive, the bonding between the chemical fiber and the paper fiber, between the paper fibers, or between the chemical fibers can be further strengthened, and the strength of the product can be increased. Since the agent is easily decomposed, the reusability of the product does not deteriorate. In addition, as a water-soluble adhesive, a water-soluble special high-molecular polymer, polyacrylamide, a cationized starch and the like can be mentioned.

The fixing agent functions to facilitate fixing of the water-soluble adhesive to paper fibers. Examples of the fixing agent include aluminum sulfate and polyacrylamide. The waterproofing agent is for imparting water repellency (the property of repelling water) to the molded article, and enables the game board 11 and the like to be washed with water. In addition, as this water resistance agent, a polyamine resin, a polyamide resin, etc. can be mentioned. The defoaming agent makes it difficult to generate bubbles when stirring the fibers with a mixing device or the like. When bubbles are generated during stirring of the fibers, the bubbles adhere to the fibers and float on the water surface together with the bubbles, making it difficult to uniformly disperse the fibers. Non-ionic activators can be mentioned as the antifoaming agent.
In addition, the medicine added to the mixed fiber dispersion is not limited to the above. Further, the paper fiber dispersion and the chemical fiber dispersion are mixed without adding the above-mentioned chemicals, and the mixed fiber dispersion is temporarily stored in one or more other storage tanks. The medicine may be sent to the next step, or a mixing device for mixing with the medicine may be provided on the way to the next step to add the medicine.

The mixed fiber dispersion is filtered to a required fiber concentration and condensed (S10). The final fiber concentration at that time is preferably 0.5 to 7% by weight. In this example, filtration was performed until the residual moisture reached 13127 liters, and the fiber content was 4
The fiber concentration was 3.0% by weight because it was unchanged at 06 kg.

Next, a primary dewatering press step is performed. In this primary dewatering press step, as shown in FIG. 5, the mixed fiber dispersion is subjected to a cold press (dehydration press) S
A required amount is filled in the mold S12 of No. 11, and the filled mixed fiber dispersion is pressed from above to squeeze out moisture. This primary dewatering press step removes most of the water in the mixed fiber dispersion. In this example, the water is reduced by about 40%. The pressing pressure is preferably from 10 t to 1000 t. 10
This is because if it is less than t, moisture cannot be sufficiently removed. In this example, it is 300t.

The molding die S12 is provided with a mesh on the bottom surface of an appropriately shaped frame, and the water content of the mixed fiber dispersion filled in the molding die S12 is squeezed downward through the mesh by a press. Fibers are deposited on the upper surface.
In this embodiment, the lower vacuum S14a is placed under the net.
Is provided, and at the time of the press, first the lower vacuum S
The water is sucked out by operating 14a, and at the same time, the water is squeezed out by a press. The water overflowing on and around the press plate S14 is sucked by the upper vacuum S14b, thereby removing water droplets around the mold S12 and preventing the water once squeezed from returning to the inside of the press-formed product. . Note that the press may be started at a time when the lower vacuum S14a has sucked water to some extent, but in this case, the production efficiency is slightly reduced.

The mesh size of the mold S12 is 60 to 8
0 mesh is preferred. Here, the mesh is a unit representing a mesh and refers to the number of meshes on one side of 25.4 mm. If the mesh size is less than 60 mesh, the mesh is too coarse, and the fiber easily comes out together with water. If the mesh size is larger than 80 mesh, the fiber presses and closes the mesh, so that the time required for moisture to escape increases, and production efficiency increases. Decrease. The shape and size of the frame of the molding die S12 are determined according to the type, size and number of products. For example, the size and shape are the same as the product, and the size is determined to be a plurality of products by subsequent cutting. In this example, a frame body capable of forming a panel having a size of four game boards is used. Reference symbol S13 is a mixed fiber dispersion liquid injection nozzle, S15 is a conveyor device,
S15a is a cleaning nozzle for cleaning fibers and the like attached to the conveyor.

Further, the water squeezed out of the mixed fiber dispersion by the cold press machine S11 passes through the lower vacuum S14a, is sent to a wastewater treatment apparatus shown in FIG. 12, and is processed so that it can be reused. . Further, the water sucked by the upper vacuum S14b is also sent to the wastewater treatment device and processed so that it can be reused.

As shown in FIG. 6, the primary dewatering press-formed product 21 formed into a flat plate by the primary dehydrating pressing step is uniformly mixed with water by removing most of the water leaving a certain amount of water 40. Paper fiber 4 mixed and dispersed
1, two types of chemical fibers, polyethylene fiber (binding chemical fiber) 42 and polypropylene fiber 43, are intertwined with each other.

On the other hand, when a chemical fiber composed of a plurality of layers such as the core-sheath type fiber 50 and the side-by-side type composite fiber 55 is used, the primary dehydration press molding formed into a flat plate by the primary dehydration press step is performed. Product 21A is shown in FIG.
(In this figure, the case where the core-sheath fiber 50 is used is shown.) As can be understood, the paper fiber 41 uniformly mixed and dispersed in water with a certain amount of water 40 remaining. Chemical fiber 50 (55) composed of a plurality of layers (polyester fiber layer 51 (56) and polyethylene fiber layer 52 (57))
Are intertwined with each other.

The above-mentioned primary dewatering press molded product 21 (21A)
Is sucked and carried to the next drying step by the suction moving device S16, and the water is further removed. The drying step is the primary dewatering press molded article 21 obtained in the primary dehydrating press step.
This is a step of drying (21A). In the drying step,
As shown in FIG. 7, the primary dewatering press molded product 21 (21) is dried by a drying device called a wicket dryer S17.
The drying of A) is performed. Wicket dryer S17
Is provided with a rotating belt-shaped member S19 whose upper side rotates forward of the production line and whose lower side rotates rearward of the manufacturing line in the drying furnace S18, and a support inclined rearward on the surface of the rotating belt-shaped member S19. The members S20 are erected at predetermined intervals. The primary dehydration press molded product 21 (21A) conveyed from the primary dehydration press process is received by the support member S20, and is set up so as to lean against the front surface of the support member S20.
While moving forward in the drying furnace S18 while supporting A),
During the movement, the primary dewatering press-formed product 21 (21A) is dried by hot air from a hot air device (not shown) of the drying furnace S18.

In the wicket dryer S17, a plurality of primary dewatering press-formed products 21 (21A) are dried while being continuously conveyed forward in a state where they are erected at predetermined intervals. It can be performed. Furthermore, if the support member S20 is formed of a plurality of parallel rod members, lattice members, mesh members, or the like, the back surface of the primary dewatering press-formed product conveyed by the wicket dryer S17 also hits the hot air, thereby improving efficiency. Drying can be performed well. Further, in the drying step of this example, in order to increase the drying efficiency, the steam generated by the wicket dryer S17 is suctioned by the suction device and sent to the wastewater treatment device.

The temperature in the drying furnace S18 is set so as not to lower the drying efficiency of the primary dewatering press molded product 21 (21A) and to prevent the primary dehydration press molded product 21 (21A) from burning. The temperature is preferably set to 100 to 200 ° C., and further determined as appropriate according to the melting point of the chemical fiber in the primary dewatering press molded article. In this example, since the melting points of the two types of chemical fibers, polyethylene fiber and polypropylene fiber, are 110 ° C. and 130 ° C., respectively, the temperature in the drying furnace S18 is set to 105 ° C. To remove 80% to 90% of the moisture contained in the primary dewatering press-formed product. By doing so, it is possible to solve the problems that the drying efficiency of the primary dewatered press molded product is reduced and the primary dewatered press molded product is burned. Further, since none of the chemical fibers is melted, the primary dewatering press-formed product 21 has a mesh structure in which the paper fibers 41 and the chemical fibers 42 and 43 are intertwined, and a communication space (mesh portion) between the fibers. Is not crushed, and in the next secondary dewatering press step, the communication space between the fibers acts as a drainage hole H (see FIGS. 6, 10 and the like), and the moisture contained in the primary dewatering press molded article 21 remains unchanged. Can be easily removed through the drain hole.

When two types of chemical fibers are used instead of the two types of chemical fibers, a single type of the above-mentioned core-sheath type fiber 50 or side-by-side type composite fiber 55 is used for the same reason as described above. The temperature in the furnace S18 is controlled by adjusting the temperature of both layers of the chemical fibers 50 and 55 (the polyester fiber layers 51 and 5).
6, the polyethylene fiber layer 52, 57) is preferably set to a temperature at which it does not melt (for example, 105 ° C.).

The primary dewatering press molded product 21 (2
The time required for 1A) to pass through the drying furnace S18 varies depending on the thickness of the primary dewatering press-formed product and the like, so that the optimal time for the conveyor depends on the thickness of the primary dewatering press-formed product and the molding efficiency. Adjust the speed. In general, when the temperature in the drying furnace S18 is constant, if the primary dewatering press molded product has a large thickness, the passage time in the furnace is lengthened, and the primary dewatering press molded product is thin. If so, the passage time in the furnace is shortened. Further, if the thickness of the primary dewatering press-formed product is constant, if the temperature in the furnace is increased, the passage time in the furnace can be shortened to increase the molding efficiency.

The dried product (the primary dewatered press molded product 21 or 21A which has been subjected to the drying process) 22 that has passed through the drying process is conveyed to the secondary dewatering press process by the conveyor S21. In this example, FIG.
As shown in FIG. 9 which is a plan view thereof, the dried product 22 is supplied to a vertically movable transfer device S22. The dried product receiving shelf S22a of the transfer device S22 moves up and down to receive the dried product 22 by the number of stages of the multi-stage heating press S24 (S25). Of course, the number of the dried processed product receiving shelf S22a and the number of the dried processed products 22 to be received is not limited to this. In addition, as in this example, when there are a plurality of multi-stage heating presses S24 and S25,
The transfer device S22 is movable. In this example, FIG.
As can be understood from FIG. 2, two multi-stage heating presses S2
4, S25 are arranged in parallel on both right and left sides orthogonal to the direction of the production line, and the transfer device S22 is mounted on a rail S22b laid on the floor by wheels S22c (see FIG. 8).
, So that the left and right multi-stage heating presses S24 and S25 and the transfer device S22 are located at corresponding positions.

The transfer device S22 is connected to the conveyor S2.
After receiving the dried product 22 from 1, it moves to the left (or right) orthogonal to the production line direction and moves to a position facing the left (right) multi-stage heating press S24 (S25). Then, when the dried product receiving shelf S22a starts moving up and down and reaches an appropriate position, the transfer device S22
The dried product 22 is placed on the hot plate S26 of each stage of the multi-stage heating press S24 (S25) by the extruder S23 provided in the multi-stage heating press S24 (S25). The next dewatering press (heating press) starts. In this secondary dewatering press, the binding chemical fiber having a low melting point is melted out of the two types of chemical fibers having different melting points which constitute the dried product (primarily dehydrated press molded product dried to some extent). Chemical fibers are combined with paper fibers, paper fibers, or chemical fibers.

The multi-stage heating press S24 (S25)
Is that the hot plates S26 approach and separate from each other, and when approaching, the hot plates S2
The dried product 22 is pressed between the six spaces.
The temperature of the hot plate S26 is preferably 100 to 200 ° C, and is appropriately determined according to the melting point of the chemical fibers contained in the dried product 22, and is set to 120 ° C in this example. Further, it is preferable that the press pressure of the multi-stage heating press S24 (S25) be 1000 t to 3000 t. 100
If it is 0t or less, there is a possibility that the dried product 22 cannot be pressed until it has the required strength.

As described above, the dried product 2 is placed on the hot plate S26 of the left (right) multistage heating press S24 (S25).
After the loading device S22 has finished loading, the conveyor S22
Return to the front position 21. The transfer device S22 is a multi-stage heating press S24 left (right) from the position of the conveyor S21.
After the movement to (S25) is started, the driving of the conveyor S21 is stopped so that the dried product 22 does not fall from the tip of the conveyor S21 until returning to the position of the conveyor S21 again.

The transfer device S22, which has returned to the front of the conveyor S21, receives the dried product 22 again on the dried product receiving shelf S22a by restarting the driving of the conveyor S21, and then moves the right (left) on the opposite side to the above. ) Side,
In the same manner as described above, another multi-stage heating press S25 (S2
After placing the dried product 22 on the hot plate S26 in 4), the process returns to the front position of the conveyor S21 again. The right (left) multi-stage heating press S25 (S24) on which the dried product 22 is placed on the hot plate S26 performs a secondary dewatering press (heating press).

The right (left) multistage heating press S25
While the dried product 22 is placed in (S24), the secondary dehydration press of the dried product 22 is completed in the left (right) multi-stage heating press S24 (S25), and the multi-stage heating is performed. The secondary dewatering press-formed product 23 is dropped onto a lifter S28 by an extruder S27 provided at each stage of the press S24 (S25). Further, on each stage of the multi-stage heating press S24 (S25) in which all the secondary dewatering press-formed products 23 have been dropped onto the lifter S28, the dried product 22 is placed again as described above, while other The secondary dewatering press molded product 23 is dropped on the lifter S28 from the multi-stage heating press S25 (S24).

The lifter S28 in this example can be moved to the front position of the left and right multi-stage heating presses S24 and S25 by wheels S28b on a rail S28a laid on the floor. After receiving the molded product 23 from the multi-stage heating press S24 (S25),
It moves to the position of the conveyor S29 for sending the secondary dewatering press-formed product 23 to the next step.

The multi-stage heating press S24, S
25 is not limited to two or more as described above, and may be a single multi-stage heating press. Further, although the molding cycle is inferior to that of the multi-stage heating press machine, a type in which the dried products are heated and pressed one by one may be used. Further, the multi-stage heating presses S24 and S25 are provided with suction devices S24a and S25a that suck the steam and send it to the wastewater treatment device so that the evaporated steam does not return to the dried product. Further, the transfer device S22 is not limited to the above-described structure.

In the case of using two types of chemical fibers 42 and 43 having different melting points, as shown in FIG. 10, in the secondary dewatering press step, as shown in FIG. Due to the fusion action of the fused portion 42F in which the polyethylene fiber 42 as the low chemical fiber for fusion is fused, the respective fibers are bonded to each other at the entangled portion of the polyethylene fiber 42 as the chemical fiber for binding and the paper fiber 41 and the polypropylene fiber 43. I do. Further, each of the fibers 41,
At the time of bonding of 43, only the chemical fiber (polyethylene fiber) 42 for bonding is melted and the other chemical fiber (polypropylene fiber) 43 is not melted. Drain holes (mesh-like communication space) H between fibers, such as between 43, are hard to be crushed, and moisture existing in the dried product can be sufficiently and efficiently drained through the drain holes H. Thus, the secondary dewatering press-formed product 23 with good drainage is obtained. The melting of the binding chemical fiber 42 may be performed by melting only the surface portion of the binding chemical fiber 42. In this case, the gap between the fibers is harder to be reliably blocked, and the drain hole is preferably formed. Can be formed. Such melting of only the surface portion of the bonding chemical fiber 42 can be easily performed by adjusting the time of the heat treatment (secondary dehydration press time in this example). In the illustrated example, the bonding force between the fibers 41 and 43 is further enhanced by the adhesive force of the water-soluble adhesive 45 in addition to the fusion bonding of the bonding chemical fibers 42 by melting.

Similarly, in the case where chemical fibers composed of a plurality of layers having different melting points, such as the core-sheath type fiber 50 and the side-by-side type composite fiber 55, are used, during the secondary dewatering press step, FIG. An example in which the core-sheath type fiber 50 is used is shown.) As shown in FIG. 5, one of the chemical fiber layers, that is, the polyethylene fiber layer 52 (57), which is the bonding chemical fiber layer having a low melting point, is melted by heating. Part 52F
The fibers 41 and 50 entangled with each other due to the fusion action of
(55) (specifically, the polyester fiber layer 51 (56) that does not melt with the paper fiber 41, the paper fiber 41, and the polyester fiber layer 51 (56)) are combined. Further, at the time of bonding the respective fibers, the bonding chemical fiber layer 52 is used.
(57) is melted, and the other chemical fiber layers 51 (56) are not melted.
The drain holes (mesh-like communication space) HA between the fibers, such as between the non-melting chemical fiber layer 51 (56) and the like, are hard to be crushed, and the moisture existing in the dried product is drained through the drain holes HA. The secondary dewatering press-formed product 23A can be sufficiently and efficiently drained and drained well. In the illustrated example, the bonding force between the fibers is further increased by the adhesive force of the water-soluble adhesive 45 in addition to the fusion of the bonding chemical fiber layer 52 by melting.

In addition, when the chemical fiber having the plurality of layers is used, the molten portion 52F in which the bonding chemical fiber layer 52 (57) is melted becomes the non-melted chemical fiber layer 51.
Since the fibers are easily held at the periphery by (56), the fibers are easily bonded to each other at the entangled portions (intersections) of the fibers, and a kind of point bonding state is easily generated. As a result, it is considered that the bonding portion due to fusion between the fibers can be reduced, the water drainage holes HA formed between the fibers at the time of pressing can be sufficiently secured, and the water drainage at the time of the pressing can be further improved.

Further, as described above, if the drying and dewatering of the primary dewatering press molded product 21 by heating is performed in two stages of a drying step and a secondary dehydration pressing process, the primary dehydration press molded product can be efficiently produced. 21 can be drained.

After the completion of the secondary dewatering press step, the secondary dewatering press molded products 23, 23A are transported to a cutting step shown in FIG. In this cutting step, the size of the secondary dewatering press-formed products 23, 23A is equal to the size of a plurality of desired products (final molded products) or the size of the secondary dehydration press-formed products 23, 23A. This is performed when the product has a different shape or the like, and may not be necessary depending on the shape and dimensions of the molding die, the type and shape of the product in the primary dehydration press step or the secondary dehydration press step, and the like. If such a cutting step is not required, the secondary dewatering press molded article 2
3, 23A is a product.

The cutting step in this embodiment is performed by using the secondary dewatering press-formed product 2 conveyed by the conveyor S29.
3, 23A is cut by a cutter S30 into a desired size. For example, the secondary dewatering press-formed products 23, 23A are cut in parallel at a total of three places at both edges and a central part, and then the secondary dehydration press-formed products 23, 23A are rotated 90 ° by a turntable S30a to obtain the cutting line. Are cut in parallel at both edges and the center part perpendicular to the edge, and are cut into unnecessary edges and four products.
For example, the periphery of 23A is cut and removed at a predetermined size to obtain a product. S30b in FIG. 11 is a secondary dewatering press molded product positioning member at the time of cutting.

Unnecessary chips generated at the time of the cutting are collected, weighed, and then disintegrated with water together with the used paper in the material mixing step and reused. Further, dust generated at the time of cutting is sent to a dust collecting device S31 by a suction device, where fibers are collected, weighed together with the cut pieces and disintegrated into water,
Reused. At that time, the chips and dust are calculated assuming that the ratio of paper fiber and chemical fiber is the same as that of the product, and is recycled as a raw material of the product. In addition, products after cutting,
Alternatively, a secondary dewatering press-formed product that does not require cutting is then provided with a decorative sheet or a necessary member attached to the surface, depending on the application.

FIG. 12 is a schematic diagram of a wastewater treatment apparatus. The wastewater treatment apparatus of this embodiment includes a settling tank S32, a settling tank S33, and a storage tank S34. The coagulation tank S32 is supplied with water (white water) mixed with the fibers squeezed out in the primary dewatering press step, the drying step, and the secondary dewatering press step. Then, an acidic coagulant is charged into the coagulation tank S32, whereby the fiber components coagulate and accumulate at the bottom of the coagulation tank S32. Further, after neutralizing the water by introducing an alkali neutralizer into the coagulation tank S32, clean supernatant water is sent to the storage tank S34, and once stored, supplied to the material mixing step. On the other hand, the fiber sedimentation water accumulated at the bottom of the coagulation settling tank S32 is sent to the settling tank S33, where the fiber content is filtered out, and clean water is sent to the material mixing step.
Further, if the fiber settling water (white water) supplied to the settling tank S33 is reused in the material mixing step, the recycling rate is further improved.

The present invention is not limited to the above-described embodiment, but may be modified without departing from the spirit of the invention.
A part of the configuration can be appropriately changed and implemented. For example, in the above-described embodiment, in the secondary dewatering press step, press processing and heat treatment (heat press) are performed in combination, and dehydration is performed while bonding each fiber with a bonding material. After the fibers are combined by the treatment, a press treatment for the purpose of dehydration, that is, a secondary dehydration press step may be performed.

[0063]

According to the manufacturing method of the first aspect of the present invention as shown and described above, the bonding material for bonding the paper fiber and the chemical fiber is a bonding chemical fiber different from the chemical fiber. Since the fibers are bonded by fusion of the bonding chemical fibers in addition to the entangled bonding of the fibers by the press in the primary dewatering press process or the secondary dewatering press process, the function of holding the bundle between the fibers of the product is achieved. The fibers can be combined so as to increase the height and easily leave a drain hole (communication space) between the fibers at the time of pressing. In addition, since at least the dewatering hole is dewatered in the secondary dewatering press step, water can be drained sufficiently and efficiently at the time of pressing, and adverse effects on production such as rupture of a molded product at the time of pressing can be minimized. And a stronger product is obtained.

Also, as in the invention according to claim 2, the fibers are bonded by the bonding material at the entangled portions of the fibers including the chemical fibers for bonding, and the non-bonded portions constitute drain holes. By so doing, the number of bonded portions due to fusion between the fibers can be further reduced, and a water drainage hole between the fibers can be sufficiently secured at the time of pressing, and the water drainage at the time of pressing can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing one embodiment of a gaming machine having a component manufactured by a manufacturing method of the present invention.

FIG. 2 is a rear view of the gaming board of FIG.

FIG. 3 is a block diagram showing a manufacturing process in a method of manufacturing a component member of the gaming machine according to one embodiment of the present invention.

FIG. 4 is a schematic view showing a material mixing step.

FIG. 5 is a schematic diagram of a primary dewatering press step.

FIG. 6 is a partially enlarged schematic view of a primary dewatering press molded product after a primary dehydration pressing step is completed.

FIG. 7 is a schematic view of a drying step.

FIG. 8 is a schematic view of a secondary dewatering press step.

FIG. 9 is a schematic plan view of FIG.

FIG. 10 is a partially enlarged schematic view of a secondary dewatering press molded product after a secondary dehydrating press step is completed.

FIG. 11 is a schematic view of a cutting step.

FIG. 12 is a diagram schematically showing a wastewater treatment device.

FIG. 13 is a schematic perspective view of a core-sheath fiber used as a chemical fiber in the production method of another embodiment.

FIG. 14 is a schematic perspective view of a side-by-side type conjugate fiber used as a chemical fiber in the production method of still another example.

FIG. 15 is a partially enlarged schematic view of a primary dewatering press molded product after completion of the primary dehydrating press step using the core-sheath type fiber of FIG.

FIG. 16 is a partially enlarged schematic view of a secondary dewatering press molded product after the secondary dehydrating press step of the embodiment is completed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 gaming machine 11 gaming board 12 gaming machine frame 13 ball tray 21, 21A primary dehydration press molded product 23, 23A secondary dehydration press molded product 41 paper fiber 42 chemical fiber for bonding (bonding material) 43 chemical fiber 50 core-sheath fiber 55 Side-by-side composite fiber

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2001-303496 (JP, A) JP-A-2000-220099 (JP, A) JP-A-10-8394 (JP, A) JP-A-9-239918 ( JP, A) JP-A 9-155013 (JP, A) JP-A 8-291488 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A63F 7/02 D21J 3/00

Claims (2)

(57) [Claims] 1. A manufacturing method for manufacturing a component of a gaming machine comprising at least a combination of a paper fiber and a chemical fiber, wherein the paper fiber, the chemical fiber and the binding material are mixed and dispersed in water to form a mixed fiber dispersion. A material mixing step to obtain, a primary dehydration press step of filling the mixed fiber dispersion into a molding die, and pressing the filled mixed fiber dispersion to obtain a primary dehydration press molded article, after the primary dehydration press step A secondary dehydration press step of dewatering the paper fiber and the chemical fiber with a bonding material or dehydrating again after the bonding, the bonding material is a bonding chemical fiber different from the chemical fiber, Heat treatment is performed after the primary dehydration press step and before the secondary dehydration press step or during the secondary dehydration press step, and each fiber is fused by fusing the bonding chemical fibers by the heat treatment. While the connection is made, each fiber is connected so as to leave a communication space as a drain hole between the fibers, and in the secondary dewatering press step, dewatering is performed at least from the drain hole. A method for manufacturing a component member of a gaming machine. 2. Bonding of each fiber by a bonding material is performed at an entangled portion of the fibers including the bonding chemical fiber,
The method according to claim 1, wherein the non-joined portion forms a drain hole.