JP2003220349A - Method of recycling waste tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of recycling waste tires that, for each constituent material of the waste tire, can realize 100% recycling which is highly profitable and can facilitate commercialization. <P>SOLUTION: This method of recycling waste tires includes, in a continuous integral manner, the step 1 of removing a bead, the step 2 of cutting into a plurality of fragments, the step 3 of separating and crushing into rubber pieces and wire pieces, the step 4 of grinding into rubber pieces having a predetermined size and other contents, the step 6 of separating and recovering the ground rubber pieces having a predetermined size and the other contents, and the step of molding the separated and recovered rubber pieces having a predetermined size into a product. This construction can realize 100% recycling of waste tires and the like with high efficiency. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to steps from pretreatment of waste tires to crushing and crushing while separating wires and the like contained in tires, and production of recycled products such as mats using crushed rubber chips. The present invention relates to a method for recycling a waste tire that can be continuously performed.

[0002]

2. Description of the Related Art In today's car society, a large amount of tires are produced and consumed. Conventionally, most of these waste tires are cut into pieces and used for thermal recycling in a cement kiln for use as fuel. However, in recent years, the amount of cement produced has fallen, and the amount of waste tires used as fuel has been reduced. There are also limits to landfill disposal sites. And other means of recycling waste tires are not so advanced.

The reason why other recycling means is not advanced is that
Waste tires contain wires for reinforcement, and when used as an alternative fuel in combustion equipment such as coal, there is a problem that the wires may cause clogging of equipment and a large amount of metal residue. Because there is. Further, in material recycling in which the rubber of a waste tire is used as a material for a rubber mat or the like, there is a problem that it cannot be a product unless the wire is completely removed.

Therefore, in order to promote the recycling of waste tires, it is necessary to separate the contents of wires other than rubber contained in the waste tires, such as rubber mats by utilizing the waste tires. As a product to be molded, means for extracting a bead from a rim portion of a waste tire, etc. proposed by the present inventors in “Japanese Patent No. 3009891”, means for cutting a tire from which a bead has been cut into several pieces, the present invention Means for crushing tire fragments proposed by the inventors in, for example, Japanese Patent Application Laid-Open No. 2000-334324, and separating and selecting an intermediate size rubber piece of about 30 mm and a wire piece included in the rubber piece, and This intermediate-sized rubber piece is crushed into a mixture of a final-sized rubber piece of about 3 mm, a wire piece, short yarns, fine fibers, and rubber powder in order, and a final size of about 3 mm is obtained from this mixture. Means for recovering the rubber strip have been proposed. A product such as a rubber mat is molded from the rubber piece having a final size of about 3 mm by heat molding or the like.

However, such conventional means have the following problems. That is, first, since there is no suggestion of means for continuously integrating from the first step of extracting beads to the final step of forming a product such as a rubber mat, transportation between respective steps is not proposed. There was a problem that the labor cost and the storage cost increased. In other words, because part of the recycling process is carried out by another company, transportation costs during that period are large, and even within the same factory, part of the process is divided into different parts. , Labor costs for transportation during that period were required, which deteriorated the profitability of recycling waste tires and made it difficult to establish a business for private sector.

Secondly, in the means for collecting the rubber pieces of the final size of about 3 mm, the wire pieces, the rubber pieces of the size of 3 mm or less, and the mixture of the fine fibers and the rubber powder are separated. Since it was difficult to separate and remove the rubber pieces, only the rubber pieces having a final size of about 3 mm in which the short fibers were mixed could be selectively collected. For this reason, products such as rubber mats have a poor appearance, and their use range is limited when they are used by being laminated on the lower part of the product. Thirdly, since it was difficult to separate and remove the fine fibers from the mixture of the fine fibers and the rubber powder, only the rubber powder could not be collected and reused.

Therefore, an object of the present invention is to pulverize waste tires and the like to separate and sort each constituent material, thereby making it possible to 100% recycle each constituent material, and to make a product such as a rubber mat having a wide appearance and a wide range of use. An object of the present invention is to provide a method for recycling a waste tire that can be efficiently molded.

[0008]

[Means for Solving the Problems] In order to solve the above problems,
The first feature of the method for recycling a waste tire is a bead removing step of removing beads from the waste tire, a cutting step of cutting the waste tire after the bead removal into a plurality of pieces, and a piece of the rubber piece and a wire piece. Separation and crushing step of crushing into separate pieces, a crushing step of crushing the separated rubber pieces into a rubber piece of a smaller size, and a mixture with other contents, and a rubber piece of a predetermined size from this mixture. And a molding step of molding the selected and recovered rubber pieces of a predetermined size into a product.

By configuring the invention as described above, by continuously integrating from the first step of removing the bead to the final step of forming a product such as a rubber mat, the cargo handling during each step is carried out. Since it is possible to reduce intermediate expenses such as expenses and personnel expenses and storage expenses related thereto, profitability is greatly improved and commercialization is facilitated. In other words, the recycling cycle cannot be expanded unless it is profitable and can be established and continued as a business. Therefore, in order to promote recycling by recycling waste tires as raw materials and recycling resources, it is extremely important to secure profitability as a business.

The second characteristic of the method for recycling waste tires is that the sorting step described in the above-mentioned characteristic 1 is a step of separating the minute wire pieces from the mixture of the small-sized rubber pieces and other inclusions by magnetic force. And a step of separating a mixture composed of fine fibers and rubber powder by wind force from the residual mixture after separating the minute wire pieces, and separating the short yarn from the residual mixture after separating the mixture with a rotating brush. And a step of separating the separated fine fiber and rubber powder mixture into the rubber powder and the cotton-like lumps of the fine fiber by the vibrating first inclined sieve,
And a step of separating the mixture of rubber pieces of different sizes after separating the short yarns into a rubber piece of a predetermined size or more and a rubber piece of a smaller size by a vibrating second inclined sieve. is there.

By constructing the invention as described above, the following operational effects can be obtained. That is, first, since a rubber piece of a predetermined size in which the short yarn is not mixed can be collected, the appearance of a product such as a rubber mat molded from the rubber piece is improved and the range of use is expanded. Secondly, by separating and sorting these from a mixture of fine fibers and rubber powder, it is possible to separate and sort all the rubber, beads, wire nets, fibers, and yarns contained in waste tires, etc. This makes it possible to recycle 100% of the constituent materials, facilitates storage, transportation, or product molding of these materials, and molds high-quality products with high purity.

The third feature of the method for recycling waste tires is that instead of the means for separating the rubber powder and the cotton-like lump consisting of the fine fibers described in the above feature 2, the separated fine fibers and rubber are separated. This vibrating first mixture is obtained by once mixing the separated short yarns with a mixture made of powder.
The slanted sieve of No. 2 provides a means for separating the rubber powder into a cotton-like mass composed of fine fibers and short yarns.

That is, since the fine fibers and the short yarns are the same material, by separating them together, the same function and effect as described above can be obtained.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A method of recycling a waste tire shown in FIG. 1 includes a bead removing step 1 in which a bead is extracted from a rim portion of a tire and is collected, and a waste tire after the bead removal is cut into a plurality of pieces. Step 2, a separation and crushing step 3 in which this piece is crushed into rubber pieces and wire pieces having a size of about 30 mm and separated into pieces, and the separated rubber pieces are sequentially processed in three stages to finally obtain a size of about 3 mm. Grinding process 4a, 4b, 4c for grinding into a mixture of rubber pieces and other inclusions
And a sorting step 6a, 6b for sequentially sorting and collecting rubber pieces of a predetermined size from the mixture in two steps, and a molding step 10 for molding the sorted and collected rubber pieces of the predetermined size into a product. There is.

Incidentally, the respective crushing steps 4a, 4b, 4
c and the sorting steps 6a and 6b are provided with elevating steps 5a to 5e for introducing materials. Further, between the sorting step 6b and the molding step 10, about 3 mm collected
Mixing step 7 of mixing the rubber pieces and the binder material of the size with a mixer, a conveying step 8 of transporting the material obtained by mixing the rubber pieces and the binder material to a molding step 10, and a molding step 10 using an elevating table. And a lift step 9 to be put into.

Next, each step will be specifically described.
The bead removing step 1 shown in FIG. 2 uses the bead removing means proposed by the present inventors in “Patent No. 3009981”. An outline will be given below with reference to FIG. The bead extracting means 11 includes a rotating drum 17 rotatably mounted on a stand frame 16. Rotating drum 1
An arm 19 having a hook-shaped hook 19a formed at the tip thereof is continuously provided on the outer periphery of 7, and this rotary drum is rotationally driven by a geared motor 12 via a chain belt 14.

The process of extracting the bead wire 112 buried over the circumference of the rim portion 110a of the waste tire 110 is as follows. First, the arm 19 is set in the horizontal position, and the arm 19 is mounted through the inner hole of the waste tire 110. Then, the geared motor 12 rotates the rotary drum 17 in the direction 111 in the drawing. Then, the arm 19 lifts the waste tire 110 upward while hooking the waste tire 110 on the hook-shaped hook 19a at the tip portion, and the taper surface 16a provided on one side surface of the stand frame 16
Press this scrap tire. Then, when the rotary drum 17 is further rotated in the direction of the drawing 111, the hook-shaped hook 1
9a bites into the rim portion 110a of the waste tire 110, and the bead wire 112 embedded in the outer and inner rim portions.
Can be hooked on this hook and forcibly pulled out.

Next, with reference to FIGS. 3 to 7, the cutting step 2 for cutting the waste tire after bead extraction into a plurality of pieces will be described. The means for realizing the cutting step 2 shown in FIG. 3 are the base 21 shown at the right end in the figure, the cutting means 22 provided above the base, and the tire 23 shown on the left side of the base. Lifting means 24 for carrying to the cutting means.
The cutting means 22 includes a cutter portion 221 and a cutter receiving portion 222 that faces the cutter portion at a predetermined interval. The cutter portion 221 is made of a steel rectangular flat plate that stands upright on the upper surface of the base 21, and the first hydraulic cylinder 2
21b horizontally reciprocates toward the metal cutter receiving portion 222 to cut the tire 23.

The cutter portion 221 is bolted by a cutter support 221a and is replaceable. In addition, the cutter receiving portion 222 can be adjusted in size and attachment position to the base 21 in accordance with the difference in diameter and thickness of the tire 23, and a soft metal plate is provided in a portion in contact with the cutter portion 221. It is installed.

The lifting means 24 is, on the left side of the base 21, a lifting stand 241 made of metal, on which the standing tire 23 is placed, and a lifting stand made of metal, which is rotatably moved above the cutting means 22. And an arm 242. The lifting stand 241 is composed of a side plate 241a made of a flat plate that supports the outer peripheral bottom portion of the tire 23 in an upright state, and a bottom plate 241b welded to one end of the side plate at a substantially right angle. The bottom plate 241b supports the right side surface portion 23b of the tire 23 in the upright state. Further, the position of the side plate 241a when the tire 23 is placed is set to a position substantially close to the floor surface, and this tire can be easily placed.

One end of the lifting arm 242 is a first pin joint provided on the back surface of the bottom plate 241b at a position between the center of the tire 23 and the side plate when the tire 23 is placed on the side plate 241a. It is rotatably connected by a rotation support portion 243. Also, the bottom plate 24
1b is connected to the lifting arm 242 by a detachable hook portion 244. That is, the hook portion 24
Reference numeral 4 denotes a first hook 244a having a concave hook portion provided on the back surface of the bottom plate 241b between the first rotation support portion 243 and the side plate 241a, and the lifting arm 2.
The second hook 244b is provided in the vicinity of the first rotation support portion 243 of 42 and has a convex hook portion that is connected to the first hook. Note that this second hook 244b
Is slidably inserted into a through hole formed in the lifting arm 242, and the repulsive force of the compression spring 244d provided at the other end 244c causes the first hook 2 to move.
It has a structure in which the concave-convex shape portion is engaged with 44a.

The other end of the lifting arm 242 is rotatably supported by a second rotation support portion 245 which is a pin joint provided inside the base 21, and this rotation support portion supports this lifting arm. When the tire 23 is rotated upward to a horizontal position, the shape of the upper surface of the cutter receiving portion 222 is set to a position within the inner circumference of the tire when viewed from above. A lever 242a is connected to the other end of the lifting arm 242, and the other end of the lever is connected to a piston of a hydraulic cylinder 247 via a third rotation support portion 246 which is a pin joint. The case of the hydraulic cylinder 247 is rotatably supported by the fourth rotation support portion 248 formed of a pin joint. Therefore, the piston of the hydraulic cylinder 247 expands and contracts to rotate the lifting arm 242 up and down.

Now, as shown in FIG. 4, the second hook 24
The other end 244c of 4b is a stopper 21a provided on the upper surface of the base 21 and near the cutter receiving portion 222 at a position where the tire 23 is rotated upward until the horizontal position.
The second hook is slid to the left in the figure against the repulsive force of the compression spring 244d, and the connection with the first hook 244a is released. And the first hook 2
When 44a and the second hook 244b are disengaged, the tip end portion of the lifting stand 241 rotates downward about the first rotation support portion 243 due to the weight of the tire 23, and the circumferential end 23c of the tire is cut by the cutter. Part 221
And the cutter receiving portion 222.

In this state, when the lifting stand 241 moves to the left in FIG. 4, the tire 2
The inner periphery of 3 is caught by the cutter receiving portion 222, and the bottom plate 241b of this lifting stand is left with this tire left.
Is pulled out. In addition, as shown in FIG.
In b, when the tire 23 is dropped between the cutter portion 221 and the cutter receiving portion 222 after the tire 23 is rotationally moved to the cutting means 22 located on the upper portion of the base 21, it does not interfere with the upright cutter portion. A U-shaped vertical groove 241c
Is cut out.

As shown in FIG. 3, one side of the base 21 is provided with two return rollers 25 that sandwich the lifting arm 242 and project substantially along the upper surface of the base. The return roller 25 has a flange portion 252 made of a metal plate whose one end is welded to the base 21, and a metallic rotating roller 251 attached to the other end of the flange portion 252.
It consists of and.

Then, as shown in FIG.
1 is a process in which the lifting stand 241 returns to one side of the base 21 while leaving the tire 23 in the cutting means 22, and the back surface of the bottom plate 241b comes into contact with the rotating roller.
This bottom plate is rotated about the first rotation support portion 243 so as to return to the original position, and is set at a position where the first hook 244a and the second hook 244b are reconnected. Therefore, when the lifting stand 241 is returned to the lower position on one side of the base 21, the lifting stand and the lifting arm 242 are re-engaged by the first hook 244a and the second hook 244b. It is fixed at a right angle.

On the other hand, as shown in FIG. 3, the tire 23 left on the cutting means 22 is placed on a horizontal support base 26.
Further, as shown in FIG. 6, the horizontal support table 26 is connected to the upper surface of the base table 21 so as to surround the cutter receiving part 222 substantially in the center, and a disk-shaped substrate 262 is arranged on the substrate in a radial pattern. , And a plurality of rotatable rollers 261. Then, the tire 23 placed on the horizontal support base 26 is rotationally moved to a predetermined position by the roller 261, and the cutter portion 221 reciprocates to be sequentially cut into pieces of a predetermined length. It should be noted that the base plate 262 has a cutter receiving portion 222 of about 9 mm so that the cut pieces of the tire 23 can be easily removed.
The 0 degree portion 262a is cut out, and a groove 262b having a predetermined width is cut out so as not to interfere with the movement trajectory of the lifting arm 242.

The cutter section 221 is not limited to a standing flat plate shape that moves horizontally, but a rotating disk cutter can be easily used. Further, the lifting stand 241 is not limited to the structure in which the side plate 241a and the bottom plate 241b each made of a flat plate are welded at a right angle, and can be easily configured by bending a plurality of metal rods in an L shape. Further, the hook portion 244 is not limited to a mechanical hook, and can be easily changed to an electromagnetically attachable / detachable one.

The horizontal support table 26 is not limited to the case where the rollers 261 are arranged on the upper surface, but the substrate 262 itself can be easily rotatably connected to the upper surface of the base table 21. Further, instead of the roller 261, it is possible to easily use a rotating piece such as an abacus ball.

Another embodiment of the cutting step 2 is shown in FIG. That is, another cutting means 2 for realizing the cutting step 2
8 is equipped with rotary blade parts 281 to 284 which are connected to parallel shafts 285 to 288 which rotate in opposition to each other. The rotary blades 281 to 284 are formed by mounting six blade tips on the circumference of a rotary plate having a predetermined thickness. Then, the rotary blade portions 281 and 282, and the rotary blade portion 283.
And 284, both side surfaces of the cutting edge are connected to the parallel shafts 285 to 288 with a predetermined axial gap therebetween. Then, the rotary blade portions 281 to 284 rotate facing each other to cut the waste tire into pieces.

The following separation and crushing step 3 utilizes the means proposed by the present inventors in "Japanese Patent Laid-Open No. 13-29892" and the like. An outline will be given below with reference to FIGS. 9 to 15. As shown in FIG. 9, the means for realizing the separation and crushing step 3 are roughly classified into a crushing device 34 for crushing tire fragments, and a drum for selecting crushed pieces having a size equal to or smaller than the hole diameter from a large number of opening holes. The main body 35, a conveyor 321 that conveys the crushed pieces that have been passed and sorted, and a magnetic sorter 3300 that separates and sorts the crushed pieces that have been conveyed into wire pieces and rubber pieces.

The tire fragments input from the input port 324 are crushed into rubber pieces and wire pieces by the crushing device 34, and are discharged to the drum body 35 from the discharge port 325.
As shown in FIG. 10, the crushing device 34 has four rows of rotary crushing cutters 326 to 329 connected to parallel shafts 326a to 329a that rotate in opposition to each other. Rotary crushing cutters 326 and 327 and rotary crushing cutter 3
As shown in FIG. 11, 28 and 329 are arranged so that the side surfaces of the replacement blade bodies 334 attached to the tips of the separating and crushing blades 326b to 327b are sandwiched at predetermined intervals 330 from each other. Further, as shown in FIG. 12, the exchange blade body 334 has grooves 334a formed on both side surfaces.

The crushing device 3 will be described with reference to FIGS. 13 to 14.
The crushing mechanism of No. 4 will be described. The fragments of the tires that have been thrown in are first rotated and crushed by a rotating crushing cutter 3.
Replacement blade bodies 334, 33 mounted on the respective 26, 327
Shear crushing by No. 4. Then, as shown in FIG. 13, the rubber pieces including the wire pieces are press-fitted into the grooves 334a formed in the exchange blade 334 during the shear crushing,
As the exchange blades are separated from each other, the wire piece is pulled out and only the rubber piece is sheared and separated.
Next, as shown in FIG. 14, the rubber piece with the wire piece attached to one end is press-fitted into the groove 334a, while the other end of the wire piece is press-fitted into the opposite groove 334a together with the other rubber piece to replace it. The wire pieces are pulled out as the blade bodies 334 move away from each other. Therefore, by such a mechanism, the rubber pieces and the wire pieces are crushed and separated.

Now, returning to FIG. 9 and continuing the description, the rubber pieces and the wire pieces crushed and separated by the crushing device 34 as described above are discharged from the discharge port 325 to the drum main body 35.
Is discharged on the inner circumference of. 3 on the circumference of the drum body 35
A large number of 0 mm through holes are formed, and a rubber piece and a wire piece having a size smaller than 30 mm drop onto the conveyor 321 installed below and are conveyed to the next magnetic sorter 3300. On the other hand, the rubber piece having a size of 30 mm or more and the wire piece remain on the inner circumference of the drum body 35, and the partition plates 38 provided at two locations on the inner circumference of the drum body 35
Along with the rotation of the drum body, the drum body is moved to and put into the charging port 324, and is crushed again by the crushing device 34. In this way, the rubber pieces having a size of 30 mm or more and the wire pieces are repeatedly crushed by the crushing device 34, and finally crushed and separated into the rubber pieces having a size smaller than 30 mm and the wire pieces. By the wall plate 39 provided in a semicircular shape along the inner peripheral surface of the drum body 35, the rubber piece and the wire piece having a size of 30 mm or more, which are conveyed to the input port 324 as the drum body rotates, It does not fall from the inner surface of the drum body.

The magnetic separator 3300 shown in FIG. 15 comprises a rotating drum 3324 made of a non-magnetic member and a magnet 3321 fixedly provided along the inner peripheral surface of the rotating drum 3324. The magnet 3321 is a quadrangular prism-shaped permanent magnet, and is fixed on the support member 3322 parallel to the central axis 3325 of the rotating drum 3324 at a constant interval over the entire length of the rotating drum. Then, the magnet 3321 extends from the upper position to the lower position of the rotary drum 3324 along the rotation direction of the rotary drum 3324.
They are arranged at fixed angles. Further, the distance between the upper surface of the magnet 3321 and the inner peripheral surface of the rotary drum 3324 is configured to increase gradually toward the lower position of the rotary drum.

The rotary drum 3324 has a central shaft 332.
It is rotatably supported by bearings provided on the motor 5, and is rotated clockwise in FIG. 15 by a motor (not shown). Further, the support member 3322 fixing the magnet 3321 is fixed to the support cylindrical member 3323,
The support cylindrical member is connected to a stationary central shaft 3325.

The rotating drum 3324 is a case 3 made of cast iron.
The tire piece, the wire piece, and the remaining wire piece-attached rubber piece that have been conveyed by the conveyor 321 from the upper part of the rotary drum are put in the upper surface of the case 326. A hopper 3327 is provided. Then, below the rotating drum 3324, a wire piece discharging duct 3328 that receives and discharges the wire piece that falls from the lower position of the rotating drum, and a rubber piece that drops from the horizontal position of the rotating drum are received and discharged. A rubber piece discharge duct 3329 and a wire piece attached rubber piece discharge duct 3330 that receives and discharges the rubber piece attached with the wire piece, which falls at an intermediate position between them, are provided. In addition, at four locations on the outer circumference of the rotating drum 3324,
Protrusions 3324a having a rectangular cross section are provided in the longitudinal direction of the rotary drum at intervals of 90 degrees.

Next, the operation of the magnetic sorter 3300 will be described. The crushed pieces including the tire pieces and the wire-piece-attached rubber pieces remaining on the wire pieces, which are conveyed by the conveyor 321, are fed from the hopper 3327 to the rotary drum 332.
It is thrown on the outer circumference of No. 4. When the position on the outer circumference of the rotating drum 3324 reaches the horizontal position, the tire piece that is a non-magnetic material among the crushed pieces falls downward due to the centrifugal force of the rotating drum and its own weight, and the rubber piece discharge duct. It is discharged to 3329. Next, the rubber piece to which the wire piece has adhered does not fall by being attracted onto the outer circumference of the rotating drum 3324 by the magnetic force of the magnet 3321 even if the position on the outer circumference of the rotating drum 3324 exceeds the horizontal position, but it rotates with this magnet. Since the magnetic force becomes weaker as the distance from the drum increases, the centrifugal force and its own weight eventually win and fall down, and the wire is discharged to the rubber piece discharge duct 3330.

Now, the wire piece which is a magnetic material is the magnet 33.
It is attracted onto the outer circumference of the rotating drum 3324 by the magnetic force of 21 and does not fall until the position on the circumference reaches downward, but when this rotating drum further rotates, the distance with this magnet increases rapidly, and finally It falls down and is discharged to the wire piece discharge duct 3328. Although not shown, the rubber piece attached to the wire piece is conveyed to the hopper 3327 again, and the crushing separation step is repeated until the rubber piece and the wire piece are separated.

The upper surface of the magnet 3321 and the rotating drum 3
The distance between the inner peripheral surface of 324 and the inner peripheral surface of the rotary drum 324 is gradually increased toward the lower position of the rotary drum. When the distance is constant, the wire piece moves to the bottom dead center on the circumference of the rotary drum. Even if it exceeds, the magnetic force of this magnet is too strong and it is pulled back on the circumference of the rotating drum in a direction opposite to the rotation direction and does not fall, but gradually grows into a large lump of wire pieces and the falling position fluctuates. This is to prevent this. In addition, the protrusion 3324a is provided on the outer circumference of the rotating drum 3324 to enhance the above-described retrograde effect of the wire piece, and to more reliably drop the wire piece at the lower position on the circumference of the rotating drum. is there. As described above, the tire fragments are crushed into rubber pieces and wire pieces having a size smaller than 30 mm, and are separated and collected.

Next, with reference to FIGS. 16 to 19, means for realizing the crushing step 4 of crushing a rubber piece of a predetermined size and other contents will be described. The crushing step 4 is composed of three steps of crushing steps 4a, 4b, and 4c as shown in FIG. 1, and is about 30 mm sorted and collected in the separation and crushing step 3.
About 8 mm and about 5 m of intermediate size rubber pieces, respectively
m and crushed pieces of about 3 mm in size, which are formed by substantially the same means. The crushing step 4a described here is to crush a rubber piece 410 of an intermediate size of about 30 mm into a crushed piece 420 of a size of about 8 mm.

The crushing step 4a is provided with a rotary blade portion 41, a fixed blade 42 and a screen 43 as shown in FIGS. The rotary blade 41 has a predetermined thickness 1
One cast iron rotary plate 411 is concentrically laminated. On the outer circumference of each rotary plate 411, a cutting edge 412 parallel to the rotation axis 414 of the rotary plate 411 is provided.
Tool a made of removable high hardness steel having a
2 is attached.

The attachment of the cutting tool 412 to the rotary plate 411 will be described with reference to FIG. On the outer circumference of the rotating plate 411,
Projecting surfaces 411a for mounting six cutting tools 412 are formed at intervals of 60 degrees around the rotation axis. A screw hole 411b is formed on the protruding surface 411a. The bite 412 has a vertically long shape whose width dimension is the same as the rib width of the rotary plate 411, and by the bolt 413 screwed into the screw hole 411b formed in the projecting surface 411a,
It is attached to this protruding surface. Cutting edge 412 of cutting tool 412
a is formed in a linear shape parallel to the rotating shaft 414,
The outer peripheral surface 412b of the cutting tool is formed in a planar shape that inclines from the cutting edge toward the inside of the rotation locus surface of the cutting edge.

The bottom surface of the bite 412 is the rotary plate 41.
1. A support surface 41 perpendicular to the protruding surface 411a formed on the outer periphery of
It is in contact with 1c. Therefore, as will be described later, when the rotating plates 411 are stacked with a predetermined rotation pitch angle offset, both end faces of the cutting tool 412 are in contact with each other and movement in the rotation axis direction is restricted, and movement in the rotation direction is a protrusion. Surface 411a
Since the movement in the direction of the rotation center is restrained by the supporting surface 411c, the bite can be reliably fixed to the rotating plate.

The outer circumference of the rotary plate 411 is set to the bite 412.
Cut down from the front position to reduce the outer diameter,
A pocket portion 411d for gripping the crushed pieces of rubber is formed. However, when the size of the crushed pieces of rubber becomes small, the crushed pieces are pressed against this pocket portion and do not fall on the screen 43. This pocket should be small as it will occur.

As shown in FIG. 17, in the rotary plate 411, the cutting edges 412a of the cutting tool 412 are rotated from the rotary plates located at both ends toward the rotary plate located in the center by a predetermined rotation pitch in the direction opposite to the rotation. The layers are stacked so that they are offset by an angle θ. The reason why the rotation pitch angle is changed in this manner is to prevent the crushing efficiency from being lowered when the size of the crushed rubber piece becomes small, and the crushed rubber piece or the like should be fixed to the rotary blade portion 4.
This is to prevent leakage from the sliding surfaces of both ends of the rotary blade portion as much as possible, by collecting them in the center of 1. And this pitch angle θ is θ = “average size (mm) of tire after crushing”
It is calculated by an empirical formula of "square of 10" / 10. In the embodiment of the present invention, the average size of the crushed tire is 8 mm.
Therefore, θ = 8 ² /10=64/10=6.4 degrees, which is rounded off and set to 6 degrees. When the size is further reduced from 8 to 5 mm and then from 5 to 3 mm, θ is rounded to 3 degrees,
It will be once. However, when θ is 2.4 degrees or less, that is, when the rounded-off θ is 3 degrees or less, the influence on the pulverization processing capacity does not change, so θ is set to 3 degrees. Therefore, when reducing the size from 5 to 3 mm, θ
Will be set to 3 degrees.

The fixed blade 42 is formed of a high hardness steel material having a linear cutting edge, and the cutting edge 41 of the cutting tool 412 is formed.
Two rotation shafts 414 are installed symmetrically between the horizontal alignment surfaces of the inlet case 44 and the outlet case 45 at a predetermined interval with respect to the rotation trajectory of 2a. Therefore,
When the fixed blade 42 is replaced or re-polished, it can be easily attached / detached by separating the inlet case 44 and the outlet case 45. Although not shown, the fixed blade 42 is movable in the horizontal direction with a push screw, and the distance between the blade edge 412a of the cutting tool 412 and the blade edge of this fixed blade can be adjusted.

Below the rotary blade portion 41, a screen 43 in which a stainless steel plate is formed into a semicircular shape and through holes 43a of a predetermined size are arranged on one surface is provided on the left and right rotary blade portions 41.
Both ends are closely attached to the lower surface of the. This through hole 4
The diameter of 3a is determined according to the size of the crushed pieces 420 after crushing. Only the crushed pieces having a size equal to or smaller than this diameter pass downward, and the crushed pieces that do not pass are determined by the rotating rotary blade portion 41. It moves on the inner semicircular surface of the screen 43 and is returned to the inside of the entrance passage 44a again. It should be noted that the screen 43 may be made of a metal mesh having a predetermined mesh size.

As shown in FIG. 18, a rubber piece 41 of the tire
A bracket 441 is attached to the wall surface 44b of the inlet passage 44a of the inlet case 44 that introduces 0 into the rotary blade portion 41 and the fixed blade 42. The one side surface 441a of the bracket 441 is formed along the rotation locus surface of the blade edge 412a of the rotary blade portion 41, and the distance 44c between this one side surface and this rotation locus surface becomes narrower as it approaches the fixed blade 42. It is configured to be. Therefore, the entrance passage 44
The rubber piece 410 of the tire that has been put into a is sequentially pushed into the interval 44c by the rotating rotary blade portion 41, gradually compressed and assembled, and forcibly supplied to the fixed blade 42.
Therefore, the rotary blade portion 41 is prevented from idling without capturing the rubber piece, and the crushing processing capability is significantly improved.

The rotary blade portion 41 has the rotary plate 4 as described above.
11 are laminated concentrically. That is, as shown in FIG. 17, a female spline 411e having fine teeth is formed at the center of the rotary plate 411, and a predetermined rotational pitch angle is obtained by the rotary shaft 414 having a male spline fitted to the female spline. Just shift them and stack them concentrically. The rotary plates 411 are in contact with each other at both ends of the hub part machined in parallel, and fixed in the axial direction by tie bolts (not shown). Then, the rotary blade portion 41 laminated in this way
Both side surfaces of the slide contact closely with the inner side surfaces of the side walls 442 and 452 of the inlet case 44 and the outlet case 45 as shown in FIG.

As shown in FIG. 16, the rotary blade portion 41 is supported by ball bearings 415 and 415 provided at both ends of the rotary shaft 414, which penetrate the side walls 442 and 452 of the inlet case 44 and the outlet case 45. Entrance case 4
4 and the outer surfaces of the side walls 442 and 452 of the outlet case 45 are mounted with screws by sheet metal discharge chambers 46 and 46 having a through hole for the rotating shaft 414 at the center. At the bottom of the discharge chambers 46, 46, the discharge pipes 461, 4
61 is welded. And the discharge chambers 46, 4
The rubber powder of the tire leaking from the gap between the inner side surfaces of the side walls 442 and 452 and the both side surfaces of the rotary blade portion 41 that slides with the inner side surfaces of the side wall 6 is collected and discharged from the discharge pipes 461 and 461 to the outside. It Therefore, it is possible to prevent rubber powder of the tire leaking from the sliding surfaces of the both end surfaces of the rotary blade portion 41 and the inner side surfaces of the side walls 442 and 452 from entering the ball bearings 415 and 415.

FIG. 19 shows the overall structure of means for realizing the crushing step 4a. The rotary blade 41 is housed in an inlet case 44 and an outlet case 45. The inlet case and the outlet case have horizontal flanges 443 and 453, respectively, and a rotary joint 454 provided at one end of the horizontal flange 453. Open and close around. A hopper 47 for charging a rubber piece of a tire is connected to the upper portion of the inlet case 44 by the lifting step 5a shown in FIG.
The lower part of 5 is connected to a base 48 for collecting and carrying out crushed pieces. Note that the crushed pieces are taken out from the carry-out port 481 provided on the base 48.
Carry out from.

The rotary blade 41 is rotated by a drive system 49 provided on the base 48. That is, a pulley 493 is attached to one end of the rotary shaft 414 of the rotary blade portion 41, and this pulley is connected to the motor 49 via the belt 492.
Rotate at 1. The drive system 49 is a safety cover 49.
Covered with 4.

Now, returning to FIG. 1 and continuing the explanation, the rubber pieces having a size of about 8 mm and the other mixture crushed at the crushing step 4a are put into the next crushing step 4b by the ascending / descending step 5b to be about 5 mm. Further crushed into rubber pieces of the same size and other mixtures. Then, this rubber piece and the other mixture are put into the sorting step 6a by the elevating step 5c.
As will be described later, the rubber pieces having a size of about 5 mm, which have been sorted and collected by the sorting step 6a, are put into the crushing step 4c by the ascending / descending step 5d and further finely crushed into the rubber pieces having a size of about 3 mm and another mixture. . Then, this rubber piece and the other mixture are again subjected to the sorting step 6 in the lifting step 5e.
It is thrown into b.

The selection step 6a was introduced between the crushing steps 4b and 4c because the 5 mm size rubber piece was selected and collected once from the 5 mm size rubber piece and the other mixture. , This rubber piece is the final size 3
This is because crushing efficiency can be improved and the time required for crushing can be shortened by crushing into rubber pieces of mm.

Now, referring to FIGS. 20 to 25, about 3 m
A means for realizing the sorting step 6b for sorting and collecting rubber pieces of about 3 mm from the rubber pieces of m and other mixtures will be described. By the way, in the mixture crushed in the crushing step 4c,
Rubber pieces with a size of 3 mm or more, rubber pieces with a size smaller than 3 mm, rubber powder, and wire pieces, short yarns, and fine fibers remaining in the rubber pieces with a size of about 5 mm before crushing and crushed and separated in the crushing step 4c It is included. In the sorting step 6b, not only rubber pieces having a size of 3 mm or more are collected from these mixtures, but also other mixtures are separately collected.

The means 61 for realizing the sorting step 6b shown in FIG. 20 comprises a crushed product of rubber pieces, wire pieces, short yarns, fine fibers and rubber powder contained in the crushed material of a waste tire.
Fine wire selection means 62 for separating the wire pieces
And a fine fiber / rubber powder separating means 63 for separating fine fibers and rubber powder from the pulverized material after separating the wire pieces.
And a short yarn selecting means 64 for separating short yarns from the residual mixture after separating the fine fibers and the rubber powder, and the fine fibers and the rubber powder from the mixture of the separated fine fibers and the rubber powder. And a particle size selecting means 66 for separating rubber pieces having a predetermined particle size or smaller from the rubber pieces of various sizes obtained by separating and removing the short yarns. Here, the short yarns separated by the short yarn selecting means 64 are once mixed with the fine fibers and the rubber powder separated by the fine fiber / rubber powder separating means 63, and the fine fibers are separated by the fiber selecting means 65 as described later. And the mixture of short threads is removed.

Next, the fine wire selection means 62 is shown in FIG. The fine wire sorting means 62 is the magnetic sorting machine 3300 in the separation and crushing step 3 described above with reference to FIG.
Although it has almost the same configuration, it will be described again here. The fine wire selection unit 62 includes a rotary drum 624 made of a non-magnetic member and a magnet 621 fixedly provided along the inner peripheral surface of the rotary drum.
The magnet 621 is a permanent magnet in the shape of a quadrangular prism, and is fixed on the support member 622 parallel to the central axis 625 of the rotating drum 624 at a constant interval over the entire length of the rotating drum. And the magnet 621 is
From the upper position to the lower position of the rotary drum 624, the rotary drum 624 is arranged at a constant angle along the rotation direction of the rotary drum. Further, the distance between the upper surface of the magnet 621 and the inner peripheral surface of the rotary drum 624 is configured to gradually increase toward the lower position of the rotary drum.

The rotary drum 624 is rotatably supported by a bearing provided on the central shaft 625, and is rotated clockwise in FIG. 21 by a motor (not shown). In addition, the support member 62 that fixes the magnet 621
2 is fixed to a supporting cylindrical member 623, and this supporting cylindrical member is connected to a stationary central shaft 625.

The rotary drum 624 is a case 62 made of cast iron.
A hopper 6 for putting the crushed material of the tire into the upper surface of the case from the upper part of the rotating drum.
27 is provided. Then, below the rotary drum 624, a wire strip discharge duct 628 that receives and discharges the wire strip that drops from the lower position of the rotary drum, and a rubber strip, a short thread that drops from the horizontal position of the rotary drum,
A non-magnetic material discharge duct 629 for receiving and discharging a non-magnetic material mixture composed of fine fibers and rubber powder is provided.
Further, projections 624a having a rectangular cross-sectional shape are provided at four positions on the outer circumference of the rotary drum 624 in the longitudinal direction of the rotary drum at intervals of 90 degrees, so that reverse movement of the wire piece is more reliably prevented. is doing.

Next, the fine fiber / rubber powder sorting means 63 is shown in FIG.
2 shows. The fine fiber / rubber powder sorting means 63 includes a centrifugal blower 631 and a blower duct 632. The centrifugal blower 631 has a cast iron impeller 631a that revolves inside a cast iron case 631c, and this impeller has a motor (not shown) centering on a rotating shaft 631b.
It is driven to rotate by. And the impeller 631a
By swirling, air is sucked in from the air intake port 631d opened on the side surface of the case 631c and around the rotary shaft 631b, and the air outlet 6 opened on the circumference of this case.
Air is exhausted from 31e.

The air discharged from the centrifugal blower 631 passes through the blower duct 632 whose flow passage area becomes narrower to increase the flow velocity, and flows out from the nozzle portion 632a provided at the tip of this blower duct to the outside. Then, as shown in FIG. 20, from the rubber pieces, short yarns, fine fibers and rubber powder, which are non-magnetic substance mixtures, falling from the wire selection means 62, only the light weight fine fibers and rubber powder are laterally moved. Blow away and separate.

Next, the short yarn selecting means 64 is shown in FIG. The short yarn selection means 64 is parallel to the rotary brush 641 of the cylindrical shape, the inclined plate 642 installed so as to be substantially in contact with the outer circumference of the rotary brush, and the rotary shaft 641c of the rotary brush. And a separation plate 643 having one end contacting the outer circumference. The inclined plate 642 and the separation plate 643 are both formed of iron plates.

The rotating brush 641 is formed by implanting a thin plastic rod 641a on the outer peripheral surface of a cylindrical plastic hub 641b. The hub 641b is fixed to a rotary shaft 641c, and this rotary shaft is rotationally driven by a motor (not shown) in a direction of sweeping up a mixture of rubber pieces and short threads sliding down on the inclined plate 642. The separation plate 643 is installed substantially horizontally.

Therefore, of the mixture of the rubber pieces and the short threads sliding down on the inclined plate 642, only the short threads are the rod 641.
It is caught on the tip of a and is swept away, and the rubber piece in a block passes. Then, a part of the short yarn caught on the tip of the rod 641a is sprung up by the centrifugal force, and the remaining short yarn still caught on the rod is scraped off by the separation plate 643. As described above, the rubber piece and the short yarn can be effectively separated and sorted. The separated and sorted short yarns are mixed with the fine fibers and the rubber powder separated by the fine fiber / rubber powder sorting means 63 and fed into the fiber sorting means 65.

Next, the fiber sorting means 65 is shown in FIG. The fiber sorting means 65 is a wire mesh 651 with a fine mesh size.
A first tilted sieve 651 made of sheet metal with a stretched a and a means 653 for vibrating the tilted sieve are provided. Both ends of the first inclined sieve 651 are joints 651 made of rubber, respectively.
It is supported by the side columns of the cast iron pedestal 654 by b and 651c, and can be vibrated and moved in the horizontal direction in the drawing. In addition, below the first tilted sieve 651, a wire mesh 651 is provided.
An inclined plate 652 that receives the rubber powder sifted from a and discharges it to the left side in the drawing is connected to this first inclined screen by columns 652a and 652b. Below the lower tilted end of the first tilted sieve 651, there is a tilted plate 656 that receives the cotton-like fibers rolling down on the first tilted sieve and discharges it to the right side in the drawing. It is supported by pillars.

Means 65 for vibrating the first inclined sieve 651
3 is a circular rotary disk 653b which is eccentrically connected to a rotary shaft 653a, a vibrating rod 653c slidably connected to the circumference of this rotary disk, and the other end of the vibrating rod is a first slanted sieve. Rotation joint 653d rotatably connected to 651
It has and. The rotating shaft 653a is attached to the pedestal 65.
4 is supported by a bearing provided on a horizontal member 655 that is continuously provided, and is rotationally driven by a motor (not shown).

Next, the function and effect of the fiber sorting means 65 will be described. The mixture of the rubber powder, the fine fibers and the short yarn is fed from the hopper 657 provided on the upper part of the stand 654 to the first inclined sieve 651.
Is thrown into the upper end of the. The rubber powder passes through the mesh of the wire netting 651a of the first inclined sieve 651 that vibrates in the left-right direction in the figure, is screened on the inclined plate 652 provided below, and is discharged leftward in the figure. On the other hand, the fine fibers and short yarns remaining on the wire net 651a are entwined with each other while vibrating to the left and right to grow into cotton-like lumps, and roll down on the slanted wire net to form a lower end portion of the first tilted sieve 651. To inclined plate 656
It drops up and is discharged to the right in the figure. From the above,
Since the rubber powder and the mixture of fine fibers and short yarns are effectively separated and sorted, and the fine fibers and short yarns are also cotton-like, the subsequent collection and handling become easy.

Next, the particle size selecting means 66 is shown in FIG. The particle size selection means 66 has substantially the same configuration as the fiber selection means 65 described above, and vibrates the second tilted sieve 661 and the second tilted sieve 661 with a mesh 661a having a mesh size of 3 mm. And means 663. And
When a mixture of rubber pieces of various sizes is put into the upper end of the second tilted sieve 661 from a hopper 667 provided on the upper part of the gantry 664, only the rubber pieces having a size of less than 3 mm pass through the wire mesh 661a. And the exhaust duct 66 provided below
Emitted from 7. And does not pass through the wire mesh 661a 3
Only the rubber pieces having a size of mm or more are used for the second inclined sieve 661.
Recovered from the lower end of the.

Finally, referring to FIG. 20, the selection step 6b
The overall configuration and operation of the means 61 for realizing the above will be collectively described. The means 61 for realizing the sorting step 6b has a casing 611 made of cast iron, and the wire sorting means 62 is provided on the upper part of this case. Then, the crushed material of the tire put into the fine wire selection means 62 is composed of the wire piece which is a magnetic material, the rubber piece which is a non-magnetic material, the short yarn, the fine fiber, and the rubber powder by the wire selection means. The mixture is separated.

The separated and sorted wire pieces fall through a discharge duct 612 provided in the lower center of the fine wire sorting means 62 into a storage container 670 provided outside the left side wall of the casing 611. On the other hand, the mixture of the rubber pieces, the short threads, the fine fibers and the rubber powder, which is made of a non-magnetic material and is separated from the wire pieces, is separated from the opening of the casing 611 located at the lower right of the fine wire selection means 62 from the separation duct 61.
Drop into 3 Air is blown to the falling mixture from the nozzle portion 632a of the fine fiber / rubber powder sorting means 63 provided on the left side surface of the separation duct 613, and the fine fibers and rubber powder having a light weight are blown rightward. .

The mixture of the rubber pieces and the short yarns obtained by separating the fine fibers and the rubber powder, which are light in weight, falls on the inclined plate 642 of the short yarn selecting means 64 located below, and the rotary brush 641.
By this, only the short yarn is separated and removed. The separated and removed short yarns join the mixture of the fine fibers and the rubber powder falling from above, and are introduced into the fiber selection means 65 from the outlet provided on the right bottom surface of the separation duct 613. Then, the fiber sorting means 65 separates the rubber powder, the fine fibers, and the cotton-like lumps in which the short fibers are intertwined, and the discharge ducts 617 and 6 respectively.
It is discharged to the storage containers 673 and 674 provided at the lower part of the casing 611 via 18.

The rubber piece that has passed through the short yarn selection means 64 is discharged from the lower end of the inclined plate 642 to the duct 614 and is introduced into the particle size selection means 66. The rubber particles of less than 3 mm are sieved down by the particle size selection means 66 and discharged into the storage container 671 via the discharge duct 615.
On the other hand, a rubber piece of 3 mm or more is discharged into the storage container 672 via the discharge duct 616 located at the lower right of the particle size selection means 66. As described above, the crushed material of the tire is separated and sorted into wire pieces, rubber pieces having a size of 3 mm or more, rubber pieces having a size of less than 3 mm, rubber powder, and cotton-like lumps of short fibers and fine fibers.

The short yarns separated and removed by the short yarn selecting means 64 may be easily collected independently without being mixed with the rubber powder and the fine fibers. In such a case, the fiber sorting means 65 separates and sorts the rubber powder and the fine fibers in the form of cotton.

[0075]

EFFECT OF THE INVENTION First, by continuously integrating from the first step of removing beads to the final step of forming a product such as a rubber mat, it is possible to reduce transportation and handling costs between the steps. Intermediate costs and personnel costs and storage costs related to them can be reduced, so profitability is greatly improved and commercialization becomes easy. Secondly, since rubber pieces of a predetermined size in which short yarns are not mixed can be collected, products such as rubber mats molded from the rubber pieces look good and the range of use is expanded.

Thirdly, rubber, beads, wire nets, fibers, etc., contained in waste tires and the like are finally obtained by separating and selecting from a mixture of fine fibers and rubber powder.
All yarns can be separated and sorted. Therefore, it is possible to recycle 100% of the constituent materials such as waste tires, the storage, transportation or product molding of these are facilitated, and a high-purity and high-quality product can be molded.

[Brief description of drawings]

FIG. 1 is an overall view of a method for recycling a waste tire.

FIG. 2 is a configuration diagram of means for realizing a bead removing step.

FIG. 3 is a configuration diagram of means for realizing a tire cutting process.

FIG. 4 is an explanatory diagram of a tire cutting process.

FIG. 5 is another explanatory view of the tire cutting process.

FIG. 6 is a top view of means for realizing the tire cutting process.

FIG. 7 is a front view of a lifting stand.

FIG. 8 is a partially enlarged cross-sectional view of another means for realizing the tire cutting process.

FIG. 9 is an overall configuration diagram of means for realizing a separation and crushing step.

FIG. 10 is a side view of a rotary crushing cutter.

FIG. 11 is a top view of a rotary crushing cutter.

FIG. 12 is a cross-sectional view of a groove formed in an exchange blade body.

FIG. 13 is an explanatory view of a mechanism for separating and crushing a rubber piece and a wire piece.

FIG. 14 is an explanatory view of another mechanism for separating and crushing a rubber piece and a wire piece.

FIG. 15 is a schematic configuration diagram of a magnetic sorting machine.

FIG. 16 is a partially enlarged front view of means for realizing a crushing process.

FIG. 17 is a partially enlarged cross-sectional view of means for realizing the crushing process.

FIG. 18 is an enlarged sectional view of a rotary blade portion.

FIG. 19 is an overall external view of a means for realizing a crushing process.

FIG. 20 is an overall configuration diagram of a unit that realizes a selection process.

FIG. 21 is a configuration diagram of means for realizing the step of separating the minute wire pieces.

FIG. 22 is a configuration diagram of means for realizing a step of separating fine fibers and rubber powder by wind force.

FIG. 23 is a configuration diagram of means for realizing the step of separating the short yarns.

FIG. 24 is a configuration diagram of means for realizing the step of separating rubber powder and a cotton-like lump consisting of fine fibers.

FIG. 25 is a configuration diagram of means for realizing a step of selectively collecting rubber pieces of a predetermined size or more and rubber pieces of a smaller size.

[Explanation of symbols]

1 Bead Removal Step 10 Molding Step 2 Cutting Step 3 Separation and Crushing Steps 4a to 4c Crushing Steps 5a to 5e Elevating Steps 6a and 6b Sorting Step 62 Minute Wire Sorting Means (Step of Separating Minute Wire Pieces) 63 Fine Fiber / Rubber Powder Sorting Means (step of separating mixture of fine fibers and rubber powder) 64 Short yarn selecting means (step of separating short yarn) 65 Fiber selecting means (step of separating into cotton-like lumps of rubber powder and fine fibers) ) 66 Particle size selecting means (step of selecting and collecting rubber pieces of a predetermined size or larger and rubber pieces smaller than them)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B07B 1/28 B07B 1/28 A 4/02 4/02 9/00 9/00 A 13/00 13 / 00 B29B 17/02 B29B 17/02 B60C 19/00 B60C 19/00 L (72) Inventor Hideo Kunioku 13-12, 2-13 No. 13 cold, Nishi Ward, Sapporo-shi, Hokkaido Shou Sangyo Co., Ltd. Cold factory (72) Invention Noriaki Nitta 2-10-3 Omagari Midorigaoka, Kitahiroshima, Hokkaido (72) Inventor Hideki Akimoto 13-12-12-13 cold, Nishi Ward, Sapporo-shi, Hokkaido Kotobuki Sangyo Co., Ltd. (72) Inventor Hiroki Tokui Hokkaido, Sapporo-shi, Nishi-ku, 13-12-12-13, Kotobuki Sangyo Co., Ltd., in a cold factory (72) Inventor, Sasashima, Hokkaido Sapporo-shi, Nishi-ku, 13-12-12-13, Kotobuki Sangyo Co., Ltd., F-term ( Reference) 4D021 A A01 AB02 AC01 CA07 EA10 FA02 GA12 JA15 JB01 KA14 NA04 NA06 NA09 NA10 4D067 CF06 CF18 DD03 DD08 DD09 EE14 EE18 EE22 GA16 GA20 GB03 GB07 4F301 AA03 BF03 BF08 BF12 BF32 BG44

Claims (3)

[Claims] 1. A bead removing step (1) for removing beads from a waste tire, a cutting step (2) for cutting the waste tire after bead removal into a plurality of pieces, and the pieces are divided into rubber pieces and wire pieces. Separation and crushing process that separates each while crushing (3)
And a crushing step (4) of crushing the separated rubber pieces into a mixture of a rubber piece of a smaller size and other contents, and a sorting step (6) of sorting and collecting rubber pieces of a predetermined size from the mixture. And a molding step (10) for molding the sorted and collected rubber pieces of a predetermined size into a product, a method for recycling a waste tire. 2. The selecting step (6) according to claim 1,
Step (62) of separating the fine wire pieces by magnetic force from the mixture of the small-sized rubber pieces and other inclusions, and from the residual mixture after separating the fine wire pieces from the fine fibers and the rubber powder by the wind force. Separating the mixture consisting of (6
3), a step (64) of separating the short yarn from the residual mixture after separating the mixture with a rotating brush, and a first inclined sieve vibrating the separated fine fiber and rubber powder mixture. A step (65) of separating rubber powder and a cotton-like lump consisting of this fine fiber, and a second inclined sieve that vibrates from a mixture of rubber pieces of different sizes after separating the short yarns, and a predetermined size or more And a step (66) of separating the rubber piece into a rubber piece having a size smaller than that of the rubber piece. 3. The separating step (65) according to claim 2.
Is the mixture of the separated fine fibers and the rubber powder, and the mixed short fibers are once mixed into the first mixture.
A method for recycling a waste tire, characterized in that it is separated into rubber powder and a cotton-like lump consisting of the fine fibers and short fibers by the inclined sieve of.