JP2003047700A - Manufacturing method of game machine component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the production efficiency in manufacturing of game machine component comprising a heat press process by use of a multistage heat pressing machine. SOLUTION: In this manufacturing method of the game machine component comprising the heat press process of filling a mixed fiber dispersed water solution of at least paper fibers and chemical fibers into a molding die; performing a dehydration by pressing the filled mixed fiber dispersed solution to provide a dehydrated press molded product; and performing a heat press by the multistage heat pressing machine, two or more multistage heat pressing machines S24 and S25 are provided, and the heat press is performed while the dehydrated press molded product is placed on the multistage heat pressing machine.

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 gaming machine component, and more particularly to a method for manufacturing a gaming machine component made of paper fiber and chemical fiber.

[0002]

2. Description of the Related Art In recent years, there has been a shortage of waste disposal sites,
Problems such as environmental pollution caused by waste increase, and reuse of waste is required from the viewpoint of resource saving.

Also in the gaming machine, there has been proposed one in which the outer frame of the gaming machine is formed by using waste paper (Japanese Patent Laid-Open No. 7-
116306). In the case of using this waste paper, the waste paper fiber is mixed with an adhesive or a synthetic resin to form an outer frame or the like.

The components constituting the game board and frame of the gaming machine are required to have a predetermined strength, and if the strength is insufficient, the gaming machine cannot be used. For example, in a pachinko game machine, nails are prepared on the game board every day, and a large amount of force is applied to the nail holes of the game board each time. There is a problem that the nail hole widens and the nail loosens or falls out. In addition, the frame parts such as the outer frame and the inner frame are required to have sufficient strength to support the game table, and not only the holding of the balls for the pachinko balls but also the player's excitement during the game, etc. It is necessary to have a strength that can withstand a certain amount of strikes.

However, in the case where the gaming machine is constituted by what is formed by pressing a dry fiber to fix the shape, that is, a so-called dry method, paper fibers are not sufficiently mixed with each other. Since the peeling strength between fibers is weak, the nails do not have the strength required for pachinko machines, such as the nails tend to loosen after repeated nail preparations. A synthetic resin had to be added and molded.

Further, a method of softening the paper fibers with high temperature and high pressure steam and press-molding is also conceivable. However, even with this method, the paper fibers are not sufficiently mixed and the insufficient bond strength of the fibers cannot be eliminated, and the high temperature and high pressure is also used. Steam can also be too hot and damage the fibers, thereby reducing strength.

Further, as in Japanese Patent Laid-Open No. 7-116305, there has been proposed a method of mixing and adhering wood chips to plant fibers to enhance the strength, but it is difficult to uniformly disperse the wood chips, and the strength and hardness are constant. Is not obtained, and the strength varies between the portion where the wood chips are present and the portion where the wood chips are not present, which makes automatic nailing and nail preparation by a machine difficult.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can be manufactured at a low cost by using paper fibers such as waste paper fibers, and has strength required for a game machine component. The present invention provides a method, and in particular, a manufacturing method capable of improving production efficiency.

[0009]

That is, the invention according to claim 1 is to fill a molding die with a mixed fiber dispersion liquid in which at least paper fibers and chemical fibers are mixed and dispersed in water, and fill the mixed fiber dispersion liquid. In a method for manufacturing a gaming machine component including a heating press step of performing a heating press with a multi-stage heating press machine after obtaining a dehydration press molded article by dehydrating by pressing, a plurality of the multi-stage heating press machine is provided, The present invention relates to a method for manufacturing a gaming machine component, characterized in that while one dehydrating press molded product is placed on one multi-stage heating press machine, another multi-stage heating press machine heat-presses it.

The invention according to claim 2 relates to the method for manufacturing a gaming machine component according to claim 1, further comprising a suction device for sucking steam generated in the multi-stage heating press machine.

[0011]

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 gaming machine component according to an embodiment of the present invention, FIG. 4 is a schematic diagram showing a raw material preparation process, FIG. 5 is a schematic diagram of a dewatering press process, and FIG. 6 is a schematic diagram of the primary drying process, FIG. 7 is a schematic diagram of the secondary drying process, FIG. 8 is a schematic plan view of FIG. 7, FIG. 9 is a schematic diagram of the cutting process, and FIG.
0 is a figure which shows the outline of a wastewater treatment apparatus.

A gaming machine 10 shown in FIG. 1 has constituent members obtained by the method for manufacturing a constituent member of the gaming machine of the present invention, and at least some of the constituent members are paper fibers mixed with at least chemical fibers. The mixed fiber dispersion liquid is formed by dehydration press molding and dried to obtain a mixed fiber molded product. As a constituent member composed of a molded product of the mixed fiber, conventionally,
It is a strength maintaining component made of wood, resin, or the like, and in particular, the game board 11, the game machine frame 12, and the ball tray 1
It is preferable to use at least one member selected from the above. In this embodiment, the game board 11 and the game machine frame 12 are formed by molding the mixed fibers. FIG. 2 shows the back surface of the game board 11.

The paper fiber may be either a new paper fiber obtained from a new paper, a paper once on the market, that is, a recovered paper fiber obtained from a recovered 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 the recycling rate of waste increases. The used paper fibers were disaggregated 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 method for manufacturing game machine constituent members described below. Composed of fibers.

The chemical fiber is used for increasing the strength of the molded product, and is made of recycled fiber, semi-synthetic fiber, synthetic fiber,
From the inorganic fibers, a chemical fiber that is easily compatible with water, has high strength, is excellent in abrasion resistance, chemical resistance, weather resistance, and is easy to dry even when wet is selected. Examples include polyester fibers, polypropylene fibers, polyamide fibers, poly-meta-phenylene terephthalamide fibers, glass fibers, ceramic fibers and the like. 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.

The corresponding constituent members of the game machine are dehydrated and pressed, as will be described later in detail, a mixed fiber dispersion liquid in which the paper fibers (including used paper fibers) and the chemical fibers are dispersed in water. It is formed by drying. After drying, it may be cut into a desired shape if necessary. Further, in the case of a game board that requires decoration such as a pattern on the surface, a decorative sheet material is attached to the surface of the mixed fiber molded product to form a game machine.

Next, an embodiment of a method for manufacturing a gaming machine component 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, an embodiment of the manufacturing method includes a raw material preparation step, a dehydration pressing step, and a drying step,
Further, in this embodiment, a cutting process is provided.

In the raw material preparation step, as shown in FIG. 4, a mixed fiber dispersion liquid in which at least chemical fibers are mixed and dispersed in water 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 the raw material of the paper fiber, a new paper or a used paper is used. However, it is preferable to include the used paper as described above or to use only the used paper from the viewpoint of reuse of waste and economical efficiency.
The following mainly describes the case of using old paper such as comic books, telephone books, and old magazines such as weekly magazines. 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 the back portion of the old magazine at a predetermined width, usually about 2 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 done continuously by passing through the section, so that the page pasting section with glue or needles is separated from the page section and automatically sent to the garbage storage section, which is the work efficiency. It is preferable from the point.
The cut pieces of waste paper with glue or needles can also be used as fuel in the subsequent drying step.

If new paper is used, the cutting and sorting (S1) is not necessary. 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.

The 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 higher the hot water temperature, the more easily the printing ink on the waste paper oozes out, and there is the troublesome need for subsequent water treatment.

Further, since the paper fiber dispersion liquid contains unnecessary substances such as glue, needles, and dust, which are erroneously mixed in the cutting and sorting, before being stored in the paper fiber storage tank (S5). It is preferable that unnecessary substances are removed by passing through a separator, a cleaner, a screen, or the like (S3a).

The chemical fibers are also weighed (S6),
Along with the required amount of water supplied from the water tank (S4), it is put into another pulper (mixer) and mixed, whereby it becomes compatible with water, disaggregates and disperses (S7), and becomes a chemical fiber dispersion liquid. 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
It is preferably 5 denier and the length is about 3 to 6 mm. In this example, a polyester fiber having a thickness of 3 denier and a length of 5 mm was used. If the length exceeds 6 mm, the fibers are easily entangled,
It becomes a dumpling and it becomes difficult to disperse the fibers. Further, when the ratio of the chemical fiber is set to 0.1 to 5% by weight based on 100% by weight of the total of the chemical fiber and water, the chemical fiber is well dispersed in water. For example, in the case of molding four game boards, 81 kg of chemical fiber is used for water 13419.
Disperse in liters. Of course, the ratio of the chemical fiber is not limited to the above range.

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 mixing ratio of the chemical fiber dispersion liquid can be freely set, and the strength of the obtained product can be set to a desired value. Generally, the strength of recycled paper fibers decreases, so the uniformity of the product strength is maintained by changing the blending ratio of the paper fiber dispersion and the chemical fiber dispersion to increase the ratio of chemical fibers. It will be 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 sufficient strength cannot be obtained. In this example, the paper fiber 32
81 kg of chemical fiber, 5392 kg of total water
It has a weight concentration of 7 liters and a fiber content of about 1.7%. Of course, the ratio of fiber, paper fiber and chemical fiber is
It 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. .

Further, the mixed fiber dispersion liquid of the mixing device has a paper strength enhancer, a fixing agent, and a water resistance which improve the dehydration property in the subsequent dehydration press step to increase the hardness and strength (paper strength) of the product. An appropriate amount of an agent for improving moldability such as an agent and an antifoaming agent is added. For example, if a paper strengthening agent such as polyethylene oxide or a synthetic paste is selected, the fibers can be dispersed in water to prevent sedimentation, and the viscosity of the mixed fiber dispersion liquid increases, so that in the next dehydration press step. Dewatering from the mesh portion of the mold becomes slow, fibers are evenly deposited on the mesh to obtain a product having uniform strength, and strength and hardness can be increased. Other examples of such a paper strengthening agent include corn starch and carboxymethyl cellulose.

The fixing agent functions to facilitate the fixing of the paper strengthening agent to the paper fiber. Examples of the fixing agent include ammonium sulfate and polyacrylamide. The water resistance agent is for imparting water repellency (water repelling property) to the product, and can be washed with water on a game board or the like. Examples of the waterproofing agent include polyamine resins and polyamide resins. The defoaming agent prevents bubbles from being generated 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. In addition, the paper fiber dispersion liquid and the chemical fiber dispersion liquid are mixed without adding the above-mentioned agent, 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 on the way 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 dewatering press process is performed. In this dewatering press step, as shown in FIG. 5, the required amount of the mixed fiber dispersion liquid is filled in a molding die S12 of a cold press machine (dehydration molding press machine) S11 and pressed from above to squeeze out water. By this 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. This is because if the amount is less than 10 ton, moisture will not be removed well. In this example, it is 300t.

The molding die S12 is provided with a net on the bottom surface of a frame having an appropriate shape, and the water content of the mixed fiber dispersion liquid filled in the molding die is squeezed downward through the net by a press to form the net upper surface. Fibers are deposited on the. Further, in this embodiment, the lower vacuum S14a is provided under the net, and at the time of the pressing, the lower vacuum S1 is first provided.
4a is actuated to suck out the water, 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 preferably 60 mesh to 80 mesh / in ² . 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 same size and shape as the product,
The size and the like are made into a plurality of products 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 an injection nozzle for the mixed fiber dispersion liquid, S15 is a conveyor device, and S
Reference numeral 15a is a cleaning nozzle for cleaning the fibers and the like attached to the conveyor.

Further, the water squeezed out of 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 equipment shown in FIG. . 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.

In the dewatering press-molded product 21 flattened by the dewatering press step, most of the water is removed by pressing in that state the paper fibers and the chemical fibers mixed and dispersed in the water. Have become intertwined with each other. The dewatering press-formed product 21 is a suction moving device S.
At 16, it is adsorbed and transported to the next drying step for further moisture removal.

The drying process comprises a primary drying process and a secondary drying process. In the primary drying step, as shown in FIG. 6, the dehydration press-formed product 21 is dried by a drying device called a wicket dryer S17. The wicket dryer S17 is provided with a rotary belt-shaped member S19 whose upper side rotates in the front of the production line and whose lower side rotates in the rear side of the production line in the drying furnace S18. The inclined support members S20 are erected at predetermined intervals. Then, the dewatering press-formed product 21 conveyed from the dewatering press step is received by the supporting member S20, and is moved forward in the drying furnace S18 while standing upright so as to lean against the front surface of the supporting member S20 and being supported. Inside the drying oven S18 hot air device (not shown)
Dry with hot air.

In the wicket dryer S17, a plurality of dewatering press-molded products 21 are dried while being continuously conveyed forward in a state of standing up at a predetermined interval with a space therebetween. it can. further,
If the supporting member S20 is formed of a plurality of parallel bar members, a lattice member, a mesh member, or the like, hot air also hits the back surface of the dewatering press-molded product 21 conveyed by the wicket dryer S17 to efficiently dry it. It can be performed.
Further, in the primary drying step 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 furnace is preferably 100 to 200 ° C. This is because if the temperature is less than 100 ° C, the drying efficiency is poor, and if the temperature exceeds 200 ° C, the dehydrated press-formed product 21 may burn during drying. The passing time in the furnace varies depending on the thickness of the dewatering press-molded product 21 and the like. Therefore, the conveyor speed is adjusted so as to be the optimum time according to the thickness of the dewatering press-molded product, molding efficiency, and the like. Generally, when the temperature in the furnace is constant, if the dehydration press-formed product 21 has a large thickness, the passage time is lengthened, and if the press-formed product 21 is thin, the passage time in the furnace is short. To do. If the thickness of the press-formed product 21 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 improved.

The primary dried product 22 obtained in the primary drying step is conveyed to the secondary drying step by the conveyor S21. In this example, FIG. 7 showing the secondary drying step and FIG. 8 which is a plan view thereof.
As described above, the transfer device S2 capable of vertically moving the primary dry product 22
2 is supplied. The primary dry product receiving shelf S22a of the transfer device S22 moves up and down, and the multi-stage heating press S
The primary dried product 22 is received by the number of steps of 24 (S25). Of course, the number of the primary dry product receiving shelves S22a and the number of primary dry products received is not limited to this. In addition, as in this example, the multi-stage heating press S2
When there are a plurality of S4 and S25, the transfer device S22 can be moved. In this example, as understood from FIG. 8, two multi-stage heating press machines S24 and S25 are arranged in parallel on both left and right sides orthogonal to the direction of the manufacturing line, and
The transfer device S22 can be moved to the left and right sides by wheels S22c (shown in FIG. 7) on a rail S22b laid on the floor, and by the movement, it is transferred to the left and right multi-stage heating press machines S24 and S25. The device S22 is arranged at the corresponding position.

The transfer device S22 includes the conveyor S2.
After receiving the primary dry product 22 from No. 1, it moves to the left side (or right side) orthogonal to the manufacturing line direction, and moves to the position facing the left (right) multi-stage heating press S24 (S25). Then, when the primary dry product receiving shelf S22a starts moving up and down and reaches an appropriate position, the transfer device S22
The primary dry product 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 S2 after completion of the placement.
The heating press starts at 4 (S25).

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 primary dry product 22 is pressed between 6 times.
The temperature of the hot plate S26 is preferably 100 to 200 ° C, and the pressing pressure is preferably 1000t to 3000t. 1000t
In the following, there is a possibility that the primary dried product cannot be pressed until the required strength is achieved.

As described above, the primary dried product 2 is placed on the hot plate S26 of the left (right) multistage 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 start of the movement to (S25), the drive of the conveyor S21 is stopped until it returns to the position of the conveyor S21 so that the primary dried product 22 does not drop from the tip of the conveyor S21.

The transfer device S22 returning to the front of the conveyor S21 receives the primary dry product 22 again on the primary dry product receiving shelf S22a by restarting the driving of the conveyor S21, and then on the right side (left side) opposite to the above. ) Side,
In the same manner as described above, another multi-stage heating press S25 (S2
After the primary dry 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 primary dried product 22 is placed on the hot plate S26 performs hot pressing.

This right (left) multi-stage heating press machine S25
While the primary dried product 22 is placed on (S24), the heating press is completed in the left (right) multi-stage heating press machine S24 (S25), and the multi-stage heating press machine S24 (S2).
By the extrusion device S27 provided in each stage of 5),
The dried product (secondary dried product) 23 is dropped on the lifter S28. Further, the primary dried product 22 is placed again on each stage of the multi-stage heating press S24 (S25) in which all the dried products 23 have been dropped on the lifter S28, and other multi-stage heating devices are placed between them in the same manner as described above. Press machine S25 (S24)
The dried product 23 is dropped onto the lifter S28.

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 being received from the multi-stage heating press S24 (S25), it is moved to the position of the conveyor S29 for sending the dried product 23 to the next step.

The multi-stage heating press machine S24, S25
As described above, it is desirable that the group consists of two or more groups. Although the molding cycle is inferior to that of the multi-stage heating press machine, it is also possible to use a type in which primary dry products are heated and pressed one by one. Further, the multi-stage heating press machines S24, S25 are provided with suction devices S24a, S25a for sucking the steam and sending it to the waste water treatment device so that the evaporated steam does not return to the dried product.
The transfer device S22 is not limited to the one having the above structure.

The dried product 23 is in a state where most of the water is removed, and is a molded product having high strength. The dried product is conveyed to the cutting process shown in FIG. This cutting step is performed when the dried product 23 has a size corresponding to a plurality of desired final products, or when the dried product 23 and the final product have different shapes. In some cases, it may not be necessary depending on the shape and size of the mold during the dewatering press step and the type and shape of the final product. When such a cutting step is unnecessary, the dried product 23 becomes a product.

The cutting step in this embodiment is carried out by cutting the dried product 23 conveyed by the conveyor S29 into a desired size by the cutter S30. For example, the dry-finished product 23 is cut in parallel at both edges and the central portion at a total of three places, and then the dry-finished product 23 is rotated by 90 ° by the turntable S30a so as to be parallel at both edges and the central portion orthogonal to the cutting line. For example, the product is cut into unnecessary edges and four products, or the periphery of the dry finished product 23 is simply cut and removed to a predetermined size. S30b in FIG. 9 is a dry-finished product positioning member at the time of cutting.

Unwanted scraps produced during the cutting are collected and weighed, and then disintegrated with water in the raw material preparing step and reused together with the waste paper. 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 cut product or the dried product that does not need to be cut may have a decorative sheet attached to the surface or necessary members attached thereto depending on the application.

FIG. 10 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 in the dehydration pressing 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. Furthermore, an alkaline neutralizer is added to the coagulation tank S32.
Water to neutralize the water, and then clear supernatant water is sent to the storage tank S34, and once stored, is supplied to the raw material preparation step. On the other hand, the fiber settling water accumulated at the bottom of the settling tank S32 is sent to the settling tank S33, where the fiber content is filtered off, and clean water is sent to the raw material preparation step. Also, the set ring tank S
If the fiber precipitation water (white water) supplied to 33 is reused in the raw material preparation step, the recycling rate is further improved.

[0049]

According to the invention of claim 1, a mixed fiber dispersion liquid of paper fibers and chemical fibers is filled in a molding die, and the filled mixed fiber dispersion liquid is pressed to be dehydrated for dehydration press molding. In a method for manufacturing a gaming machine component including a heating press step in which a heating press is performed with a multi-stage heating press machine after obtaining, a multi-stage heating press machine is provided in plural, and one multi-stage heating press machine is dehydrated and press-molded. Since the heating press is performed by another multi-stage heating press machine while the product is placed, the molding cycle can be shortened and the production efficiency can be improved.

Further, according to the invention of claim 2, since the multi-stage heating press machine is provided with the suction device for sucking the generated steam, the steam generated in the pressing step returns to the dried product. The press work can be performed effectively and efficiently.

[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 according to the embodiment of FIG. 1. FIG.

FIG. 3 is a block diagram showing steps of a manufacturing method according to the present invention.

FIG. 4 is a schematic view showing a raw material preparation step.

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

FIG. 6 is a schematic view of a primary drying step.

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

FIG. 8 is a schematic plan view of FIG.

FIG. 9 is a schematic view of a cutting process.

FIG. 10 is a diagram showing an outline of a wastewater treatment device.

[Explanation of symbols]

10 game machines 11 game board 12 game machine frame 13 ball saucer 21 Dewatering press-molded product 22 Primary dried products 23 Final dry product S9 mixing device S11 cold press machine S17 wicket dryer S24,25 Multi-stage heating press machine

Claims (2)

[Claims] 1. A dehydrated press-molded product is obtained by filling a mixed fiber dispersion liquid in which at least paper fibers and chemical fibers are mixed and dispersed in water into a molding die, and pressing the filled mixed fiber dispersion liquid for dehydration. In a method for manufacturing a gaming machine component member, which comprises a heating press step of performing a heating press with a multi-stage heating press machine later, a plurality of the multi-stage heating press machines are provided, and a dehydration press molded product is mounted on one multi-stage heating press machine. A method for manufacturing a gaming machine constituent member, wherein hot pressing is performed with another multi-stage heating press while being placed. 2. The method for manufacturing a gaming machine component according to claim 1, further comprising a suction device for sucking steam generated in the multi-stage heating press machine.