JP2003113599A - Method for producing component of game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing components of a game machine, efficiently and sufficiently removing water when pressing to dehydrate, wherein a product having sufficient strength for the component for the game machine is produced by using the method. SOLUTION: This method for producing components of a game machine comprises a material mixing step in which paper fibers 41, chemical fibers 43 and binder materials 42 are mixed to obtain a mixed fiber dispersion, a first dehydration step in which the mixed fiber dispersion filled in a mold is pressed to obtain a first dehydrated and pressed product and a second dehydration step in which the paper fibers and the chemical fibers are bonded by the binders and simultaneously or successively dehydrating again, wherein the binder materials combine each of the fibers to remain through holes as drain holes H among the fibers and water is removed through the drain holes at least in the second dehydration step.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a constituent member of a gaming machine, and more particularly to a manufacturing method for manufacturing a constituent member of a gaming machine formed by binding paper fibers and chemical fibers.

[0002]

2. Description of the Related Art Conventionally, in a gaming machine such as a pachinko gaming machine, constituent members such as a gaming board and a gaming machine frame, which are a part of the gaming machine, are formed by a member formed by paper fibers and chemical fibers. There are things that have been done. As a method for manufacturing the constituent members of this gaming machine, for example, a paper fiber mainly made of waste paper, a chemical fiber for obtaining strength, and a bond made of powdery or granular thermosetting resin or thermoplastic resin, etc. A material and a material are mixed and dispersed in water to prepare a mixed fiber dispersion liquid, then, the mixed fiber dispersion liquid is filled in a molding die, and the filled mixed fiber dispersion liquid is pressed to dehydrate the paper. There is a method of manufacturing a constituent 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-mentioned manufacturing method, paper fibers, chemical fibers,
Alternatively, there is a problem that the space between the paper fiber and the chemical fiber is blocked by the bonding material made of the thermosetting resin or the thermoplastic resin, so that the moisture is not drained. In particular, if the location where the moisture is poorly generated partially occurs, there is a risk of manufacturing adverse effects such as bursting of the molded product at the location where the moisture is poorly removed during the dewatering press step, There was a risk that the strength would decrease.

When a thermoplastic resin is added as a binding material for binding the paper fiber and the chemical fiber, 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 distributed in a mixed fiber dispersion liquid so that the thermoplastic resin is widely distributed and bonded so as to close the fibers, so that the loss of water during the dehydration press becomes particularly bad. There was a possibility.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to efficiently and sufficiently remove water during dewatering press, which causes adverse effects on manufacturing such as bursting of a molded product. A method for manufacturing a component member of a gaming machine, which can be prevented as much as possible, and a product having a strength required as a component member of the gaming device is obtained.

[0006]

That is, the invention of claim 1 is a manufacturing method for manufacturing a constituent member of a gaming machine, which is composed of at least a paper fiber and a chemical fiber bonded together,
A material mixing step of mixing and dispersing paper fibers, chemical fibers, and a binding material in water to obtain a mixed fiber dispersion liquid, filling the mixed fiber dispersion liquid into a molding die, and pressing the filled mixed fiber dispersion liquid. A primary dewatering press step of obtaining a primary dewatering press molded article by the method, and a secondary dewatering pressing step of dehydrating again after the primary dewatering pressing step while binding the paper fiber and the chemical fiber with a binding material, or after binding. ,
The bonding material bonds each fiber so as to leave a communication space as a drainage hole between the fibers, and at least in the secondary dehydration press step, dehydrates from the drainage hole. .

According to a second aspect of the present invention, in the first aspect, the binding material is a binding chemical fiber different from the chemical fiber, and is used after the primary dewatering press step and before the secondary dewatering press step or after the secondary dewatering press step. It is characterized in that heat treatment is applied during the dehydration pressing step, and the chemical fibers for bonding are fused by the heat treatment to bond the respective fibers.

According to a third aspect of the invention, in the second aspect, the melting point of the bonding chemical fiber is lower than that of the chemical fiber, and the bonding chemical fiber is melted in the heat treatment. It is characterized in that the temperature is set so as not to melt.

According to a fourth aspect of the present invention, in the second or third aspect, the binding of the fibers with the binding material is performed by the entangled portions of the fibers containing the binding chemical fibers, and the non-binding portions form drain holes. It is characterized by doing.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION 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 constituent members manufactured by the manufacturing method of the present invention, and FIG. 2 is a rear view of the gaming board of FIG. Further, FIG. 3 is a block diagram showing a manufacturing process in a method for manufacturing a component member of a gaming machine according to an 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. 6 is a partially enlarged schematic view of the primary dewatering press molded product after completion of the primary dewatering press step, FIG. 7 is a schematic view of a drying step, FIG. 8 is a schematic view of a secondary dewatering press step, and FIG. 9 is a schematic 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 completion of the secondary dewatering press step, FIG. 11 is a schematic view of a cutting step, and FIG. 12 is a view showing an outline of a wastewater treatment device. Furthermore, FIG. 13 is a schematic perspective view of a core-sheath type fiber used as a chemical fiber in a production method of another example, and FIG. 14 is a schematic perspective view of a side-by-side composite fiber used as a chemical fiber in a production method of yet another example. Perspective view, also FIG.
13 is a partially enlarged schematic view of the primary dewatering press molded product after the completion of the primary dewatering press process of the example using the core-sheath type fiber of FIG. 13, and FIG. 16 is the secondary dewatering press after the completion of the secondary dewatering press process of the example. It is a partially enlarged schematic view of a molded product.

A gaming machine 10 shown in FIG. 1 has constituent members obtained by an embodiment of the manufacturing method of the present invention. Some constituent members are at least paper fibers and chemical fibers mixed and dispersed in water. The mixed fiber dispersion thus prepared is subjected to dehydration press molding (a primary dehydration press step and a secondary dehydration press step described later),
It consists of dried mixed fiber moldings. The paper fiber and the chemical fiber are bonded by the fusion of the bonding chemical fiber by the heat treatment in the secondary dehydration pressing step in a state where the fibers are intertwined with each other, and the adhesiveness by the water-soluble adhesive. The constituent member of the gaming machine 10 is a strength retaining constituent member that is conventionally formed of wood, resin, or the like, and particularly, the gaming board 11, the gaming machine frame 12, the ball tray 13
It is preferable that at least one member selected from the above. In this embodiment, the game board 11 and the game machine frame 12
Is composed of a molded product of the mixed fiber. Figure 2
The back surface of the game board 11 is shown.

The paper fiber may be either a new paper fiber obtained from a new paper, a paper once on the market, that is, a used paper fiber obtained from a used paper, or a fiber containing both of them. It is preferable to use only paper fibers including fibers, preferably used paper fibers, because not only a cheaper game machine can be obtained but also recycling and effective utilization of waste can be achieved. Used paper fibers are disaggregated by immersing old magazines such as old newspapers and magazines, advertisements, discarded copy paper, etc. in water (including hot water), as described in detail in the method of manufacturing components for gaming machines described below. Composed of fibers.

The chemical fiber is a regenerated fiber, a semi-synthetic fiber, a synthetic fiber, or an inorganic fiber, which is easily compatible with water, has high strength, is excellent in abrasion resistance, chemical resistance, weather resistance, and when wet. Also, multiple types of chemical fibers that are easy to dry are selected and used. In addition, at least one type of chemical fiber among the plurality of types of chemical fibers has a lower melting point than other types of chemical fibers, and the chemical fiber having a low melting point acts as a binding material. It is said that. As a result, when the paper fibers and the chemical fibers (including the binding chemical fibers) are entangled with each other, when heat treatment is performed at a temperature at which the binding chemical fibers melt, the binding chemical fibers melt. The fibers can be bonded to each other by the attachment.

Examples of the chemical fiber include polyethylene fiber, polyester fiber, polypropylene fiber, polyamide fiber, poly-meta-phenylene terephthalamide fiber and the like. When considering the reuse of the constituent members of the gaming machine 10 made of these chemical fibers and paper fibers,
As the binding chemical fiber, the thermoplastic chemical fiber such as the polyethylene fiber, which is capable of being remelted by heat treatment to re-disintegrate each fiber, is most suitable. Further, the chemical fiber having heat resistance, flame resistance, and insulation is suitable for a gaming machine that uses electricity, such as a pachinko gaming machine.

As the chemical fiber (including the binding chemical fiber), a chemical fiber having a plurality of layers having different melting points may be used. As shown in FIG. 13, for example, the chemical fiber composed of a plurality of layers includes a core portion 51 corresponding to the inner layer of the chemical fiber and a sheath portion 52 corresponding to the outer layer thereof, and the core portion 51 is the sheath portion. There is a core-sheath fiber 50 covered by 52. In this 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 together.

Concretely, as an example of the core-sheath type fiber 50, there is one in which a polyester fiber is used for the core portion 51 and a polyethylene fiber is used for the sheath portion 52. As described above, the use of the polyester fibers and the polyethylene fibers, which are the thermoplastic chemical fibers, facilitates the reuse of the constituent members (molded articles) as described above. In the above description, the inner layer portion of the chemical fiber composed of a plurality of layers is composed of one layer, but not limited to this, the inner layer portion is two or more layers,
The total number of layers may be three or more.

Further, as the chemical fiber composed of the plurality of layers, as shown in FIG. 14, two kinds of chemical fiber layers 56 and 57 having different melting points are formed so that the bonding surfaces thereof are substantially straight lines (generally flat surfaces). The side-by-side composite fiber 55 laminated on the above can also be mentioned. In the illustrated side-by-side 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 bonds the fibers to each other. It functions as a chemical fiber (bonding material).

Concretely, as an example of the side-by-side type composite fiber 55, there is one 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 fibers and the polyethylene fibers, which are the thermoplastic chemical fibers, facilitates the reuse of the constituent members (molded articles) as described above. In the above side-by-side composite fiber,
Although it has a two-layer structure in which two types of chemical fiber layers are bonded together, 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 constituent members of the gaming machine 10 are subjected to dewatering press treatment, as described in detail later, of a mixed fiber dispersion liquid in which the paper fibers (including the case of waste paper fibers) and the chemical fibers are mixed and dispersed in water. It is molded by performing a primary dewatering press step and a secondary dewatering press step). In addition, after the dehydration press treatment, it may be appropriately cut into a desired shape if necessary. Further, in the case where the surface of the game board 11 is required to be decorated with a pattern or the like, on the surface of the molded product made of the mixed fiber of the paper fiber and the chemical fiber,
The decorative sheet material is attached.

In the gaming machine 10 having the above-mentioned structure, it is useful for the reuse and effective use of paper products such as old magazines, and the paper fibers and the chemical fibers forming the above-mentioned constituent members are the respective fibers. Are entangled with each other, and are bonded by melting and cooling solidification of the bonding chemical fiber by heat treatment,
The strength is the same as that of a member made of wood or resin. In addition, in the process of obtaining the product (constituent member), if necessary, a water-soluble adhesive described below is added to further strengthen the bond between the fibers,
The strength of the product may be increased.

Next, an embodiment of the method for manufacturing the constituent members of the gaming machine according to the present invention will be described. The manufacturing method of the present invention relates to a method for manufacturing the constituent members of the 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 pressing step, a drying step, and a secondary dewatering pressing step, and further includes a cutting step in this embodiment.

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

First, the preparation of the paper fiber dispersion will be described.
As a raw material of the paper fiber, a new paper or a used paper is used. However, it is preferable to include the used paper or use only the used paper as described above from the viewpoint of recycling of waste and economical efficiency. Hereinafter, a case will be described in which used paper mainly composed of old magazines such as comic books, telephone books, and weekly magazines is used as a raw material for paper fibers. The page sticking part located on the back part of the old magazines is cut and separated from the page part by a cutting machine to remove glue, staples and the like, and the paper part corresponding to the page part is selected (S1). The glue and staples not only hinder the production of good molded products from waste paper fibers, but also make cleaning of the production equipment troublesome, so they are selected in advance from the page section. At that time, in order to surely remove the glue and the needle, it is preferable to cut from the back portion of the old magazine at a predetermined width, usually about 1 cm. In the cutting and separating, the magazines are arranged on an automatic feeding device such as a conveyor so that the page sticking (bonding) sides are in the same direction, and the magazines on the automatic feeding device reach the cutting device and the blade of the cutting machine is cut. It is carried out continuously by passing through the section, so that the page pasting section with glue or needles is separated from the page section (paper section) and automatically sent to the garbage storage section. It is preferable in terms of efficiency. The cut pieces of waste paper with glue or needles can also be used as fuel in the subsequent drying step.

When new paper is used as the raw material for the paper fiber, the cutting and sorting (S1) becomes unnecessary. Further, when using new paper and old magazines, the following weighing is performed after performing the cutting selection (S1) for old magazines, and the cutting selection (S1) is performed for new paper. Without it, the next weighing is done.

A required amount of the paper portion is weighed (S2), and the paper portion is put into a mixer called a pulper together with a required amount of water to be mixed and disaggregated (S3). Water is supplied from the water tank (S4). The ratio of paper and water is determined so that the paper fibers can be easily disintegrated, but usually the total of water and paper is 100.
It is preferable that the weight% of the paper is about 0.5 to 15% by weight with respect to the weight%. As an example, a case of manufacturing four pachinko game boards will be described.
Inject 10508 liters of water for 5 kg. Of course, the proportion of paper is not limited to the above range. By mixing in the pulper, the paper is loosened into a fibrous form and becomes a porridge-like paper fiber dispersion liquid. The paper fiber dispersion liquid is temporarily stored in the paper fiber dispersion liquid storage tank (S5). The water used for the disaggregation of the paper fibers may be room temperature, but if the water is about 30 ° C to 100 ° C, the paper will be smoothly disentangled into fibers. However, when hot water is used, the printing ink on the waste paper is more likely to bleed out as the temperature of the hot water becomes higher.

Further, since the paper fiber dispersion liquid contains unnecessary substances such as glue, needles, dust, etc., which are erroneously mixed in in the cutting and selection, it is stored in the paper fiber dispersion liquid storage tank (S5). Before, it is preferable that unnecessary substances are removed by passing through a separator, a cleaner, or a screen (S3a). In particular, in the case of reusing a constituent member made of a molded article of paper fiber and chemical fiber once used in the gaming machine, for example, the gaming board 11 of the gaming machine 10 in the present invention,
The game board has many members such as decorative sheets, nails, plastics, etc., and it is not easy to completely remove these members in advance, so there is a possibility that they may get mixed into the paper fiber dispersion liquid. Removal of unnecessary substances (S3a) using a separator or the like becomes more important.

The chemical fibers are also weighed (S6),
It is thrown into another pulper (mixer) together with the required amount of water supplied from the water tank (S4) and mixed, whereby it is soaked in water and disaggregated (S7) to form a chemical fiber dispersion. The chemical fiber dispersion liquid is temporarily stored in the chemical fiber dispersion liquid storage tank (S8). One pulper may be used for waste paper fibers and chemical fibers, and the target fibers may be alternately used. The thickness of the chemical fiber is 2-5
The denier and the length are preferably about 3 to 6 mm. In this example, there are two types of chemical fibers to be charged, and one chemical fiber (bonding chemical fiber) has a thickness of 2 denier and a length of 5 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. When the length of the chemical fiber exceeds 6 mm, the fiber becomes entangled too easily and becomes a dumpling state, which makes it difficult to disperse the fiber. Further, if the ratio of the chemical fibers obtained by adding the above two types is 0.1 to 5% by weight with respect to the total 100% by weight of the two types of chemical fibers and water, these chemical fibers become water. Disperses well into. For example, in the example of molding four game boards, the two types of chemical fibers 8 described above 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 described above.

Further, instead of introducing the two kinds of chemical fibers, only one kind of the core-sheath type fiber 50 or the side-by-side type composite fiber 55 having a plurality of layers may be introduced. Even when the core-sheath fiber 50 is added, it is preferable that the core-sheath fiber 50 has a thickness of 2 to 5 denier and a length of 3 to 6 mm. As a specific example of the core-sheath fiber 50, the inner layer (core portion) 51 is formed of polyester fiber having a melting point of 130 ° C., and the outer layer (sheath portion) 52 is formed of polyethylene fiber having a melting point of 110 ° C. The thickness is 2 denier and the length is 5 mm.
Regarding the mixing ratio of the core-sheath fiber 50 and water, if the ratio of the core-sheath fiber 50 to the total 100% by weight of the core-sheath fiber 50 and water is 0.1 to 5% by weight,
The core-sheath fiber 50 is well dispersed in water.

Further, side-by-side type composite fiber 55
Also in the case of adding, the thickness is preferably 2 to 5 denier and the length is preferably 3 to 6 mm. A specific example of the side-by-side type composite fiber 55 has a melting point of 130.
It has a thickness of 2
Examples include denier and length of 5 mm. As for the mixing ratio of the side-by-side type composite fiber 55 and water, the side-by-side type composite fiber 55 is added to the total amount of the side-by-side type composite fiber 55 and water of 100 as in the core-sheath type fiber 50.
If it is set to 0.1 to 5% by weight with respect to% by weight,
The side-by-side type composite fiber 55 is well dispersed in water.

The paper fiber dispersion and the chemical fiber dispersion are introduced from the respective storage tanks into the mixing device by a predetermined amount (S9) and mixed therein, and the waste paper fibers and the chemical fibers are uniformly dispersed in water. A fiber dispersion is produced. At that time, since the paper fibers are already dispersed in the paper fiber dispersion and the chemical fibers are dispersed in the chemical fiber dispersion, and the mixed fiber dispersion is produced by mixing the dispersions, the paper fiber dispersion The compounding ratio of the chemical fiber dispersion liquid can be freely set, and the strength of the obtained molded product can be set to a desired value. Generally, the strength of recycled paper fibers decreases, so by changing the blending ratio of the above paper fiber dispersion and chemical fiber dispersion to increase the ratio of chemical fibers, the uniformity of strength of molded products is maintained. It becomes easy to do.

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 weight ratio of paper fiber and chemical fiber is 9: 1.
~ 7: 3 is preferred. If the chemical fiber content is less than 10%, a product having a sufficient strength (final molded product) cannot be obtained. In this example, 81 kg of chemical fibers to 325 kg of paper fibers, the total amount of water is 23927 liters, and the weight concentration of the fiber components is about 1.
It is 7%.

Further, if the ratio (weight ratio) of the bonding chemical fibers to be melted (including the layer having a low melting point of the chemical fibers composed of a plurality of layers) is set to 30% or less, the distance between the fibers will be described later. A sufficient drain hole (communication space or gap) can be secured, and at least the dewatering property during the secondary dewatering press becomes good. In addition, since the product once used in the game machine is reused, when the product is put into the pulper and mixed, the fusion bond by the melted and solidified chemical fiber (bonding chemical fiber) is relatively easily released. It becomes possible to (disaggregate). Of course, the ratio of the fiber component, the paper fiber and the chemical fiber is not necessarily limited to the above range.

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 fibers and the chemical fibers that are well dispersed in water is different. Generally, chemical fibers are more difficult to disperse in water than paper fibers. Therefore, lowering the fiber concentration with respect to water allows better fiber dispersion. Therefore, it is possible to obtain a mixed fiber dispersion liquid in which the paper fiber and the chemical fiber are well dispersed by mixing the paper fiber and the chemical fiber separately with water to prepare a dispersion liquid and then mixing both dispersion liquids at a predetermined ratio. .

In the mixed fiber dispersion of the mixing device, a papermaking sticky agent, a fixing agent, a water-proofing agent, a defoaming agent and a water-soluble agent for improving the dehydration property in the primary dehydration press step and the secondary dehydration press step. An appropriate amount of a paper strength enhancing agent (hereinafter referred to as a water-soluble adhesive) or the like is appropriately added. For example,
By adding polyethylene oxide as a sticky agent for papermaking to the mixed fiber dispersion liquid, the fibers (paper fiber and chemical fiber) are uniformly dispersed in water, and the mixed fiber dispersion liquid in the primary dewatering press step and the secondary dewatering press step is obtained. It is possible to improve the dehydration property from the product, and to obtain a product with a good texture in which the fiber distribution in the product is uniform. Further, by adding the water-soluble adhesive, the bond between the chemical fiber and the paper fiber, the paper fibers, or the chemical fibers can be further strengthened to enhance the strength of the product, and the water-soluble adhesive can be added. Since the agent is easy to decompose, the reusability of the product does not deteriorate. Examples of water-soluble adhesives include water-soluble special high molecular weight polymers, polyacrylamides, and chaotic starch.

The fixing agent serves to facilitate the fixing of the water-soluble adhesive to the paper fiber. Examples of this fixing agent include aluminum sulfate and polyacrylamide. The water resistant agent is for imparting water repellency (water repellent property) to the molded product, and allows the game board 11 and the like to be washed with water. Examples of the waterproofing agent include polyamine resins and polyamide resins. The defoaming agent makes it difficult to generate bubbles when the fibers are mixed with a mixing device or the like. When bubbles are generated when the fibers are stirred, the bubbles are attached to the fibers, the fibers float on the water surface together with the bubbles, and it becomes difficult to uniformly disperse the fibers. Examples of the antifoaming agent include nonionic activators.
The chemicals added to the mixed fiber dispersion are not limited to those mentioned above. Further, the paper fiber dispersion liquid and the chemical fiber dispersion liquid are mixed without adding the above-mentioned chemicals, and the mixed fiber dispersion liquid is temporarily stored in one or two or more separate storage tanks, and only the necessary amount from the storage tank is stored. The drug may be sent to the next step, or a mixing device for mixing with the drug may be provided during the sending to the next step to add the drug.

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 is performed until the residual water content is 13127 liters, and the fiber content is 4
Since it does not change from 06 kg, the fiber concentration is 3.0% by weight.

Next, a primary dewatering press process is performed. In this primary dewatering press step, as shown in FIG. 5, the mixed fiber dispersion liquid is subjected to a cold press machine (dewatering molding press machine) S.
The required amount is filled in the molding die S12 of No. 11, and the filled mixed fiber dispersion liquid is pressed from above to squeeze out water. By this primary dewatering press step, most of the water content in the mixed fiber dispersion liquid is removed. In this example, the water content is reduced to about 40%. The pressing pressure is preferably 10t to 1000t. 10
This is because if it is less than t, the water does not drain well. In this example, it is 300t.

The molding die S12 is provided with a net on the bottom surface of an appropriately shaped frame body, and the water content of the mixed fiber dispersion liquid filled in the molding die S12 is squeezed downward through the net by a press to form a net. Fiber is deposited on the upper surface.
Further, in this embodiment, the lower vacuum S14a is provided 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 the press. Moisture that has overflowed on or around the press plate S14 is sucked by the upper vacuum S14b, whereby water droplets around the molding die S12 are removed, and the once squeezed water is prevented from returning to the inside of the press molded product. . The pressing may start at a time when the lower vacuum S14a has sucked out water to some extent, but in that case, the production efficiency is slightly reduced.

The mesh size of the molding die S12 is 60-8.
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 it is less than 60 mesh, the mesh is too coarse and the fibers easily come out together with water. On the other hand, if it is larger than 80 mesh, the fibers press the mesh and block it, resulting in a longer time for the moisture to escape, resulting in higher production efficiency. Is reduced. The frame shape and size 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 those of the product, and the size of a plurality of products obtained by subsequent cutting. In this example, a frame body that can form a panel having a size of four game boards is used. Reference numeral S13 is a mixed fiber dispersion injection nozzle, S15 is a conveyor device,
S15a is a cleaning nozzle for cleaning the fibers and the like adhering to the conveyor.

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

As shown in FIG. 6, the primary dewatering press-formed product 21 flattened by the above-mentioned primary dewatering pressing process is removed to remove most of the water remaining with a certain amount of water 40, so that it is evenly distributed in water. Paper fibers that were mixed and dispersed in 4
The polyethylene fibers (bonding chemical fibers) 42 and the polypropylene fibers 43, which are one or two kinds of chemical fibers, 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 dewatering press molding is flattened by the primary dewatering press step. Item 21A is shown in FIG.
(In this figure, the case where the core-sheath type fiber 50 is used is shown.) As will be understood, the paper fiber 41 that has been uniformly mixed and dispersed in water while leaving a certain amount of water 40 is used. Chemical fiber 50 (55) consisting of multiple layers (polyester fiber layer 51 (56) and polyethylene fiber layer 52 (57))
The fibers of each are intertwined with each other.

The primary dehydration press-formed product 21 (21A)
Is sucked and transported by the suction transfer device S16 to the next drying step, and water is further removed. The drying process is performed by the primary dehydration press molded product 21 obtained by the primary dehydration press process.
It is a step of drying (21A). In the drying step,
As shown in FIG. 7, the primary dewatering press-formed product 21 (21
Drying of A) is performed. Wicket dryer S17
Is provided with a rotary belt-shaped member S19 whose upper side rotates forward of the production line and whose lower side rotates rearward of the production line in the drying furnace S18, and the surface of the rotary belt-shaped member S19 is supported rearwardly inclined. The members S20 are erected at predetermined intervals. Then, the primary dewatering press-formed product 21 (21A) conveyed from the primary dewatering press process is received by the support member S20, and is erected so as to lean on the front surface of the support member S20.
While supporting A), the inside of the drying furnace S18 is moved forward,
During the movement, the primary dewatering press-formed product 21 (21A) is dried with hot air by 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 of standing up at a predetermined interval, and thus are efficiently dried. It can be performed. Further, if the supporting member S20 is formed of a plurality of parallel bar members, lattice members, mesh members, or the like, hot air also hits the back surface of the primary dewatering press-molded product conveyed by the wicket dryer S17, thereby improving efficiency. It can be dried well. Further, in the drying process of this example, in order to improve the drying efficiency, the vapor generated in the wicket dryer S17 is sucked by the suction device and sent to the wastewater treatment device.

The temperature in the drying furnace S18 does not lower the drying efficiency of the primary dewatering press-formed product 21 (21A) and prevents the primary dewatering press-formed product 21 (21A) from burning. The temperature is preferably 100 to 200 ° C., and further appropriately determined according to the melting point of the chemical fiber in the primary dewatering press-formed product. 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., which is a temperature at which both chemical fibers do not melt. To 80% to 90% of the water content contained in the primary dewatering press-molded product. By doing so, it is possible to solve the problems that the drying efficiency of the primary dewatering press-molded product is reduced and the primary dewatering press-molded product burns. Further, since none of the chemical fibers melt, 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 entangled with each other, and the communication space between the fibers (mesh portion). Is not crushed, and in the subsequent secondary dewatering press step, the communication space between the fibers acts as a drain hole H (see FIGS. 6 and 10), and the water content contained in the primary dewatering press molded product 21 remains. Can be easily removed through the drain hole.

Even when two or more types of chemical fibers are used instead of the two types of chemical fibers, one type of core-sheath type fiber 50 or side-by-side type composite fiber 55 is used for the same reason as above. The temperature in the furnace S18 is controlled by both layers of the chemical fibers 50, 55 (polyester fiber layers 51, 5
6. It is preferable to set the temperature (for example, 105 ° C.) at which the polyethylene fiber layers 52 and 57 do not melt.

The primary dewatering press-formed product 21 (2
The time for 1A) to pass through the drying furnace S18 varies depending on the thickness of the primary dewatering press-molded product and the like. Adjust speed. Generally, when the temperature in the drying oven S18 is constant, if the primary dewatering press-formed product has a large thickness, the passage time in the oven is lengthened, and the primary dewatering press-formed product may have a small thickness. If this is the case, shorten the passage time in the furnace. 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 and the molding efficiency can be increased.

The dried product (first dehydration press molded product 21 or 21A subjected to the drying treatment) 22 that has undergone the drying process is conveyed to the secondary dehydration press process by the conveyor S21. In this example, FIG. 8 showing the secondary dewatering press process.
Further, as shown in FIG. 9 which is a plan view thereof, the dried product 22 is supplied to the vertically movable transfer device S22. The dry processing product receiving rack S22a of the transfer device S22 moves up and down to receive the dry processing products 22 by the number of stages of the multi-stage heating press S24 (S25). Of course, the number of the dry processing product receiving shelves S22a and the dry processing 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 press machines S24 and S25,
The transfer device S22 is movable. In this example, FIG.
As can be seen from the two multi-stage heating presses S2
4, S25 are arranged in parallel on the left and right sides orthogonal to the direction of the manufacturing line, and the transfer device S22 is mounted on the floor on a rail S22b on which wheels S22c (see FIG. 8) are provided.
By means of this movement, the left and right multi-stage heating press machines S24, S25 and the transfer device S22 are brought into corresponding positions.

The transfer device S22 includes the conveyor S2.
After receiving the dried product 22 from No. 1, it is moved to the left (or the right) orthogonal to the manufacturing line direction and moved to a position facing the left (right) multi-stage heating press S24 (S25). Then, when the dried product receiving shelf S22a starts to move up and down and reaches an appropriate position, the transfer device S22
The dry processing product 22 is placed on the hot plate S26 of each stage of the multi-stage heating press S24 (S25) by the extrusion device S23 provided in the multi-stage heating press S24 (S25). Next dewatering press (heating press) starts. In this secondary dewatering press, by melting the bonding chemical fiber having a low melting point out of the two types of chemical fibers having different melting points constituting the dried product (primary dewatering press molded product that has been dried to some extent) 22, The chemical fibers and the paper fibers, the paper fibers are bonded to each other, or the chemical fibers are bonded to each other.

The multi-stage heating press machine S24 (S25)
Between the hot plates S26 are close to and away from each other, and when the hot plates S2 are close to each other,
The dried product 22 is pressed between 6 times.
The temperature of the hot plate S26 is preferably 100 to 200 ° C., which 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, the press pressure of the multi-stage heating press S24 (S25) is preferably 1000t to 3000t. 100
If it is 0 t or less, the dried product 22 may not be pressed until the required strength is achieved.

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

The transfer device S22 returning 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 on the right side (left side) on the opposite side to the above. ) Side,
In the same manner as described above, another multi-stage heating press S25 (S2
After the dried product 22 is placed on the hot plate S26 of 4), it returns to the front position of the conveyor S21 again. The right (left) multi-stage heating press machine S25 (S24) on which the dried product 22 is placed on the hot plate S26 performs a secondary dewatering press (heating press).

This right (left) multi-stage heating press machine S25
While the dried product 22 is placed on (S24), the secondary dehydration press of the dried product 22 is completed by the left (right) multi-stage heating press machine S24 (S25), and the multi-stage heating is performed. The secondary dewatering press-molded product 23 is dropped onto the lifter S28 by the extrusion device S27 provided in each stage of the pressing machine S24 (S25). Further, the dry-processed product 22 is placed again on each stage of the multi-stage heating press S24 (S25) in which all the secondary dehydration press-formed products 23 are dropped on the lifter S28, and other dry-processed products 22 are placed between them as described above. The secondary dehydration press-formed product 23 is dropped onto the lifter S28 from the multi-stage heating press S25 (S24).

The lifter S28 of this example can be moved to the front positions of the left and right multi-stage heating presses S24, S25 on the rail S28a laid on the floor by wheels S28b. 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 dehydration press-formed product 23 to the next step.

The multi-stage heating press machines S24, S
The number 25 is not limited to the two or more units as described above, but may be one unit of the multi-stage heating press machine. Further, although the molding cycle is inferior to that of the multi-stage heating press machine, a type in which dry-processed products are heated and pressed individually may be used. Further, the multi-stage heating press machines S24, S25 are provided with suction devices S24a, S25a for sucking the vapor and sending it to the wastewater treatment device so that the vaporized vapor does not return to the dried product again. The transfer device S22 is not limited to the one having the above structure.

In the case of using two kinds of chemical fibers 42 and 43 having different melting points as in this example during the secondary dehydration pressing step, as shown in FIG. Due to the fusing action of the melting portion 42F in which the polyethylene fibers 42 which are low bonding chemical fibers are melted, the fibers are bonded at the entangled portion of the polyethylene fibers 42 which are the bonding chemical fibers and the paper fibers 41 and the polypropylene fibers 43. To do. Furthermore, each of the fibers 41,
Since only the bonding chemical fibers (polyethylene fibers) 42 are melted and the other chemical fibers (polypropylene fibers) 43 are not melted at the time of bonding 43, as can be understood from the figure, the paper fibers 41 and the chemical fibers that do not melt. The water drain holes (mesh-shaped communication spaces) H between the fibers, such as between 43, are less likely to be crushed, and the water contained in the dried product can be drained sufficiently and efficiently through the water drain holes H. A secondary dehydration press-molded product 23 that is well drained can be obtained. The bonding chemical fiber 42 may be melted by melting only the surface portion of the bonding chemical fiber 42. In that case, it becomes more difficult for the fibers to be closed more reliably and the drainage hole is well 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 dewatering press time in this example). In addition, 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 fiber 42.

Similarly, when a chemical fiber 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 is used, the secondary dewatering press step shown in FIG. An example using the core-sheath type fiber 50 is shown.) As shown in FIG. 2), one of the chemical fiber layers, that is, the polyethylene fiber layer 52 (57) which is a bonding chemical fiber layer having a low melting point is melted by heating. Part 52F
The fibers 41, 50 intertwined with each other by the fusion action of
(55) (specifically, the paper fibers 41 and the polyester fiber layers 51 (56) that do not melt, the paper fibers 41, and the polyester fiber layers 51 (56) are bonded to each other. Further, at the time of bonding the respective fibers, the bonding chemical fiber layer 52
Since only (57) is melted and the other chemical fiber layers 51 (56) are not melted, the paper fiber 41 is
The water drainage holes (mesh-like communication spaces) HA between the respective fibers, such as between the chemical fiber layers 51 (56) that do not melt with each other, are difficult to be crushed, and the water contained in the dried product is removed through the water drainage holes HA. The secondary dehydration press-molded product 23A can be obtained which can be sufficiently and efficiently drained and drained well. In the illustrated example, in addition to fusion bonding of the bonding chemical fiber layer 52 by fusion, the bonding force between the fibers is further enhanced by the adhesive force of the water-soluble adhesive 45.

In addition, in the case of using the chemical fiber composed of a plurality of layers, the fusion portion 52F in which the binding chemical fiber layer 52 (57) is melted is the non-melting chemical fiber layer 51.
Since it is easily held around by (56), the fibers are easily bonded to each other at the entangled portions (intersections) of the fibers, and a kind of point-bonded state is likely to occur. 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 pressing can be further improved.

Further, as described above, if the drying / dehydration of the primary dewatering press-formed product 21 by heating is performed in two steps of the drying process and the secondary dewatering press process, the primary dewatering press-formed product can be efficiently produced. The water contained in 21 can be removed.

After the completion of the secondary dewatering press step, the secondary dewatering press molded products 23, 23A are conveyed to the cutting step shown in FIG. In this cutting step, the secondary dewatering press-molded products 23, 23A are larger than a desired product (final molded product) by a plurality of sizes, or other than the secondary dewatering press-molded products 23, 23A. This is performed when the product has a different shape, and may not be necessary depending on the shape and size of the mold during the primary dewatering press step and the secondary dewatering press step, the type and shape of the product, and the like. When such a cutting step is unnecessary, the secondary dewatering press-formed product 2
The product is 3,23A.

In the cutting step in this embodiment, the secondary dehydration press molded product 2 conveyed by the conveyor S29 is used.
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 both edges and the central portion at a total of three places, and then the secondary dewatering press-formed products 23, 23A are rotated by 90 ° by the turntable S30a, and the cutting line is cut. Cut in parallel with both edges orthogonal to the central part to cut into unnecessary edges and four products, or simply a secondary dewatering press molded product 23,
For example, the periphery of 23A is cut and removed to a product with a predetermined size. S30b of FIG. 11 is a secondary dewatering press molded product positioning member at the time of cutting.

Unwanted scraps produced during the cutting are collected and weighed, and then disintegrated in water together with the waste paper in the material mixing step and reused. Further, dust generated during cutting is sent to a dust collector S31 by a suction device, where fibers are collected and weighed together with the scraps and disintegrated in water,
Be reused. At that time, scraps and dust are calculated assuming that the ratio of paper fibers and chemical fibers is the same as the product, and are recycled as raw materials of the product. The product after cutting,
Alternatively, the secondary dewatering press-molded product that does not require cutting may be provided with a decorative sheet on its surface or a necessary member attached depending on the application.

FIG. 12 is a schematic view of the wastewater treatment equipment. The wastewater treatment equipment of this embodiment comprises a coagulation tank S32, a settling tank S33 and a storage tank S34. The coagulation tank S32 is supplied with the 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, the acidic coagulant is put into the coagulation tank S32, whereby the fiber components coagulate and collect at the bottom of the coagulation tank S32. Further, an alkaline neutralizer is added to the coagulation tank S32 to neutralize the water, and then clean supernatant water is sent to the storage tank S34, and once stored, is supplied to the material mixing step. On the other hand, the fiber precipitation water accumulated at the bottom of the coagulation tank S32 is sent to the settling tank S33, where the fiber component is filtered off, 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-mentioned embodiments, but within the scope of the invention.
A part of the configuration can be appropriately changed and implemented. For example, in the above embodiment, in the secondary dewatering press step, the press treatment and the heat treatment (heating press) are performed together, and the dehydration is performed while binding each fiber with the binding material, but the present invention is not limited to this. After the fibers are bound by the treatment, a pressing treatment for the purpose of dehydration, that is, a secondary dehydration pressing step may be performed.

[0065]

As shown and described above, according to the manufacturing method of the invention according to claim 1, the binding material for binding the paper fiber and the chemical fiber communicates between the fibers as drain holes. Since each fiber is bonded so as to leave a space, and at least the water is drained from the water draining hole in the secondary dehydration pressing step, water can be drained sufficiently and efficiently during pressing, and the molded product bursts during pressing. It is possible to prevent the manufacturing adverse effects such as the above as much as possible and to obtain a product having higher strength.

According to the second and third aspects of the invention, the binding material is a binding chemical fiber different from the chemical fiber, and the fibers are entangled by pressing in the primary dewatering press step or the secondary dewatering press step. In addition to binding
Since the fibers are bonded by the fusion of the bonding chemical fibers, the function of holding the bond between the fibers of the product can be enhanced. Further, the water drain holes (communication spaces) between the fibers can be easily left at the time of pressing, and water can be sufficiently and efficiently drained at the time of pressing.

In particular, in the invention according to claim 3, the melting point of the bonding chemical fiber is lower than that of the chemical fiber, and
In the heat treatment, the binding chemical fiber is melted,
Since the temperature is set so as not to melt the chemical fibers, it is possible to reduce the bonding portion (range) due to the fusion of the chemical fibers among the bonds between the fibers, so that the water drain holes between the fibers during pressing are more crushed. Difficulty and better drainage of water during the pressing. In addition, the chemical fiber that does not melt can be expected to have the effect of maintaining the strength of the product required as a constituent member of the gaming machine.

Further, as in the invention according to claim 4, the binding of the respective fibers by the binding material is made at the entangled portions of the fibers containing the binding chemical fibers, and the non-bonded portions form drain holes. By doing so, it is possible to further reduce the number of joints due to fusion bonding between the fibers, to ensure sufficient water drainage holes between the fibers during pressing, and to improve water drainage during pressing.

[Brief description of drawings]

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

2 is a rear view of the game board shown in FIG. 1. FIG.

FIG. 3 is a block diagram showing manufacturing steps in a method for manufacturing the constituent members of the gaming machine according to the embodiment of the present invention.

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

FIG. 5 is a schematic view of a primary dewatering press process.

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

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

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

9 is a schematic plan view of FIG.

FIG. 10 is a partially enlarged schematic view of a secondary dewatering press-formed product after the completion of the secondary dewatering press step.

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

FIG. 12 is a diagram showing an outline of a wastewater treatment device.

FIG. 13 is a schematic perspective view of a core-sheath fiber used as a chemical fiber in a manufacturing method of another example.

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

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

FIG. 16 is a partially enlarged schematic view of the secondary dewatering press-formed product after the completion of the secondary dewatering press step in the same example.

[Explanation of symbols]

10 game machines 11 game board 12 game machine frame 13 ball saucer 21,21A Primary dewatering press molded product 23,23A Secondary dewatering press molded product 41 Paper fiber 42 Chemical fiber for bonding (bonding material) 43 Chemical Fiber 50 core-sheath fiber 55 Side-by-side type composite fiber

Claims (4)

[Claims] 1. A manufacturing method for manufacturing a component of a gaming machine, which comprises at least a bond between 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 obtain a mixed fiber dispersion liquid. A material mixing step of obtaining, a primary dewatering press step of filling the mixed fiber dispersion into a molding die and obtaining a primary dewatering press-molded article by pressing the filled mixed fiber dispersion, and after the primary dewatering press step And a secondary dehydration pressing step of dehydrating again while bonding the paper fiber and the chemical fiber with the bonding material, or after bonding the bonding material, the bonding material leaves a communication space as a drain hole between each fiber. A method for manufacturing a component member of a gaming machine, characterized in that the fibers are bonded together as described above, and in the secondary dewatering press step, dewatering is performed through at least the drain hole. 2. The binding material is a binding chemical fiber different from the chemical fiber, and is subjected to heat treatment after the primary dewatering press step and before the secondary dewatering press step or during the secondary dewatering press step, The method for manufacturing a component member of a gaming machine according to claim 1, wherein the bonding chemical fibers are fused by the heat treatment to bond the respective fibers. 3. The melting point of the bonding chemical fiber is lower than the melting point of the chemical fiber, and in the heat treatment, the temperature is set such that the bonding chemical fiber is melted but the chemical fiber is not melted. The method for manufacturing a component member of a gaming machine according to claim 2, wherein 4. The binding of each fiber by a binding material is performed at an entangled portion of fibers including the binding chemical fiber,
The method for manufacturing a component member of a gaming machine according to claim 2 or 3, wherein the non-bonded portion constitutes a drain hole.