JP2006305718A - Cutting device of tire and cutting method of tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device of a tire capable of cutting a tire with a wire in it, favorably a used tire in optional size without depending on particularity of a blade, facilitating recycling of the tire with the wire in it by shredding it and capable of reducing facility cost and driving cost for the shredding and a cutting method of the tire. <P>SOLUTION: This cutting device of the tire is furnished with a rotating tooth to cut the tire, a supporting means to support the outer peripheral side of the tire and the opposite side and a presser means for pressing both sides of a cutting point of the tire on the side of the supporting means and cuts the tire positioned in the presser means by the rotating tooth. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tire cutting device and a tire cutting method, and more particularly to a tire cutting device and a tire cutting device that can be cut into a desired size when disposing of used old tires, in particular, used wire-tired tires. It relates to a cutting method.

  In general, various techniques have been proposed for cutting old tires, in particular, old tires with wires.

  For example, a rotating drum is rotatably supported on the gantry frame, a supporting member for supporting the bead portion of the waste tire is provided on the rotating drum, and the holding drum is clamped from the inside in cooperation with the supporting member on the rotating drum. An arm is provided, an auxiliary column is provided on the side of the rotating drum, a slider is mounted on the auxiliary column so as to be movable along the axis of the auxiliary column, and the waste tire sandwiched between the support member and the holding arm is attached to the slider. On the other hand, there is known a technique in which a forward / backward slider is mounted so as to freely move back and forth, and a cutting machine is mounted on the tip of the forward / backward slider so as to be rotatable along the ring portion of the waste tire (see, for example, Patent Document 1) .

  Further, by providing a cutting blade portion on the outer peripheral portion of the round blade and providing a pair of convex blade portions extending along the circumferential direction of the round blade on both sides in the thickness direction of the outer peripheral end portion of the cutting blade portion. A technique for cutting is also known (see, for example, Patent Document 2).

JP 2003-94385 (Claim 1, FIG. 1) JP 2003-236762 (Claim 1, FIG. 1)

  According to the technique of Patent Document 1, it is possible to cut the tire in the radial direction and the circumferential direction, but there is a problem that the apparatus becomes large and cannot be cut with a simple configuration. Further, according to the technique of Patent Document 2, cutting is performed efficiently depending on the shape of the blade, but there is a disadvantage that a blade having a characteristic in the configuration of the blade must be used.

  The object of the present invention is to make it possible to cut a wire-filled tire, preferably a used old tire, to an arbitrary size without depending on the blade characteristics, and to make the wire-filled tire into small pieces for easy recycling. It is another object of the present invention to provide a tire cutting device and a tire cutting method that can reduce the equipment cost and the operation cost for the fragmentation.

  According to the tire cutting device according to claim 1, the subject is a rotating tooth that cuts a tire (including an old tire, the same applies hereinafter), a support means that supports the outer peripheral side of the tire, And a pressing means that presses both sides of the cutting portion toward the support means, and the tire is positioned between the pressing means by cutting with the rotating teeth.

  In this way, the tire is fixed by the support means and the pressing means, and this fixed portion can be cut with the rotating teeth.

  At this time, the rotation of the rotating teeth is performed by rotating at a low speed, and it is preferable that the support means is formed with a space for the cutting teeth to enter. Since the rotating teeth rotate at a low speed in this way, the rotating teeth can be cut without generating frictional heat or the like when cutting the tire. It is possible to prevent adhesion and inability to cut, and it is not necessary to use a special blade. Further, since the rubber is not melted, no bad odor is generated due to the melting of the rubber, and the cutting work environment is improved.

  Furthermore, it is preferable that a plurality of irregularities are formed on the surface of the support means that contacts the tire. When a plurality of irregularities are formed on the surface of the support means that contacts the tire, the tire moves on the support means at the time of cutting, and it becomes difficult to cut by shifting between the rotating teeth, especially the wire portion. It is possible to prevent the disconnection.

  In addition, it is more preferable that a plurality of irregularities are formed on the surface of the support means that comes into contact with the tire, and a convex portion higher than the plurality of irregularities is formed. Thus, by forming the convex part higher than several unevenness | corrugations, a tire will be lifted by a high convex part, and a rotation tooth will enter a tire from this raised part, and will be cut | disconnected. Therefore, as the cutting progresses, the cut part spreads in the direction of tearing (spreading downward) due to the high convex part, and a force that exposes the wire part from the cut rubber part works, and the wire part is caused by the rotating teeth. It will be cut directly and can be cut very easily.

  In addition, it is preferable that the pressing means has a plurality of irregularities formed on the surface in contact with the tire. When a plurality of irregularities are formed on the surface of the pressing means in contact with the tire in this way, the tire can be pinched in cooperation with the plurality of irregularities of the supporting means, and the tire can be securely fixed. Can be cut.

  And it is more preferable that the space for pressing both sides of the cut portion of the tire of the pressing means is formed larger than the space where the cutting teeth formed in the support means enter. Thus, when the space for pressing both sides of the cut portion of the tire of the pressing means is formed large, it is cut by the lifting by the high convex part on the supporting means side and the force by the pressing means pressing on the supporting means side. It becomes possible to tear the part more reliably in the tearing direction.

  Further, it is preferable that the pressing means is detachable from the fixing means having a hook on the free end side. Thus, it becomes possible to engage and fix the fixing means provided with the hook on the free end side of the pressing means, and the fixing means presses the pressing means more firmly to the supporting means side to fix the tire. Can be cut more easily.

  According to the tire cutting method according to claim 9, the subject is a tire supporting step of supporting the tire by a supporting means having a space at the tire cutting location, and the tire cutting location by the pressing means after the tire supporting step. A pressing step of pressing both sides of the tire toward the support means, and the tire is pressed against the support means by the pressing step, and the rotating tooth is rotated at a low speed to the space of the support means to cut the cut portion of the tire. This is solved by comprising a cutting step and a removing step of removing the tire after cutting.

  Thus, according to the cutting method of the present invention, it is possible to easily cut a tire (including an old tire) containing a wire into a desired size.

  According to the tire cutting device and the tire cutting method of the present invention, a tire (including an old tire) can be easily cut into a desired size with a simple configuration without depending on the peculiarities of the cutting teeth. In particular, wire-filled tires were difficult to cut, but the wire-filled tires can be made into small pieces to facilitate recycling, and the equipment costs and operating costs for making pieces into pieces can be reduced. It becomes possible.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that members, arrangements, and the like described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.

  FIGS. 1 to 6 relate to an embodiment of the present invention, FIG. 1 is a schematic perspective view of a cutting device, FIG. 2 is an explanatory view of a main part showing support means and pressing means, and FIG. 3 is a cutting process. FIG. 4 is a partially enlarged explanatory view of the cutting process, FIG. 5 is a schematic perspective view of the cutting device showing the cutting position of the rotating teeth, and FIG. 6 is a block diagram of the cutting process.

  The cutting device S of the tire T of this example has as main components a rotating tooth 10 for cutting, a tire support means 20, a tire pressing means 30, and a fixing means 40 for fixing the support means 20. These main elements are provided on a gantry 50 covered with a cover K. Note that the power of the cutting device S is turned on and off by the switch 14.

  The gantry 50 is provided with a plurality of operation pedals (P1 to P3) at a lower position. In this example, three operation pedals are provided. The first pedal P1 is for operating the pressing means 30, and when the first pedal P1 is operated, the pressing means 30 acts to press against the support means 20 against the spring 35 shown in FIG. . That is, it performs chucking opening and closing. The second pedal P2 is for operating the fixing means 40. The hook 41 provided on the front side of the fixing means 40 is engaged with the connecting portion 36 of the pressing means 30 and fixed to the support means 20 side. Is. That is, opening and closing of chucking by the hook 41 is performed.

  The third pedal P3 is for operating the rotating tooth 10, the motor M, the speed reducer (not shown), and the air cylinder 60 that rotates them in the direction of the arrow X. In this example, the motor M rotates only while the third pedal P3 is operated, and the link portion 12 described later is rotated by the air cylinder 60.

  And when the 3rd pedal P3 is operated and the rotation tooth | gear 10 cut | disconnects the tire T and reaches a predetermined position, it is comprised so that a drive stop may be automatically performed by a limit switch etc. The driving source for performing the chucking by the pedal P1 is connected to a pneumatic device (not shown). When the chucking by the pedal P2 is performed, the driving source is connected to the air cylinder 70 so as to be opened and closed. Has been.

  As shown in FIG. 2, a rotating shaft 11 is formed on the upper surface side of the gantry 50, and a link portion 12 is formed so as to be swingable through the rotating shaft 11. Teeth 10 are provided. An air cylinder 60 is disposed at the rear end of the link portion 12 of this example via a rod 61. By this air cylinder 60, the rotating tooth 10 and the motor M swing and move toward the support means 20. It is configured to be able to.

  Further, an operation lever 13 is provided on the upper end side of the link portion 12 of this example. The operation lever 13 performs an auxiliary role of the air cylinder 60. By pushing or pulling up the operation lever 13, the operation lever 13 assists when the air cylinder 60 becomes insufficient for some reason. It has become. Although it is secondary, it is possible to prevent the rotating tooth 10 from being accidentally touched by putting the hand on the operation lever 13 during the operation of the rotating tooth 10.

  The rotating tooth 10 of this example cuts a tire (including an old tire) T, and the rotating tooth 10 is connected to the output shaft of the motor M via a reduction gear (both not shown). The rotation of the rotating tooth 10 rotates slowly, and in this example, it rotates at 10 rotations / minute to 30 rotations / minute. The rotation speed is preferably about 18 to 25 rotations per minute. Moreover, the kind of tooth | gear (blade) is not ask | required and it is possible to use the well-known rotating tooth 10. FIG. The rotating tooth 10 rotates slowly and slowly, moves to the tire T side by operating the air cylinder 60 by operating the pedal P3, and moves to the support means 20 side while cutting the tire T. Yes.

  In this example, the rotating tooth 10 is connected to the output shaft of the motor M via a speed reducer so that the rotating tooth 10 and the motor M swing together. It is good also as a structure which isolate | separates, power is transmitted by a rotation transmission means, for example, a belt, a chain, etc., and the rotation tooth | gear 10 is rotated. Alternatively, the rotating teeth 10 may be directly attached to the output shaft of the motor M so that the motor M is rotated at a low speed.

  The support means 20 of this example supports the side opposite to the outer peripheral side of the tire T (that is, the inner peripheral side of the tire T). It is clamped and fixed. The support means 20 of this example is composed of protrusions 22 and 22 having two predetermined lengths on a base 21 with a narrow width interval (space) 23, and the rotating tooth 10 has a narrow width interval. It is formed so that it can enter. It is also possible to form a long hole continuously in the narrow width interval (space) 23 so that the rotating tooth 10 enters the lower side of the base 21.

  The base 21 and the fixing means 40 in this example are formed in a range smaller than the size of the inner ring of the tire T, whereby the inner ring portion of the tire T passes through the support means 20 and the fixing means 40 from the inner ring space of the tire T. Thus, the entire tire T can be supported. The two ridges 22 and 22 in this example have a height from the base 21 of about 25 to 50 mm, preferably 35 to 40 mm, and in a specific embodiment, about 38 mm.

  A plurality of irregularities are formed on the upper surface 22 a of the two ridges 22, 22, that is, the surface in contact with the tire T. The plurality of irregularities can prevent the tire T from moving during cutting. Further, convex portions 24 and 24 higher than the plurality of projections and depressions are formed on a portion where the tire T is placed at a predetermined position of the plurality of projections and depressions on the surface of the support means 20 that contacts the tire T, in this example, at a substantially central position. . The height of the convex portions 24, 24 in this example is about 5 to 20 mm, and specifically, the height is about 10 mm higher than the plurality of irregularities. It arrange | positions so that the back side (inner ring side) of the surface of the tire T may be located in these convex parts 24,24.

  The pressing means 30 of this example presses both sides of the cut portion of the tire T, and presses and fixes the tire T so as to sandwich the tire T with the support means 20. The holding means 30 of this example is composed of two rectangular rectangular bars 33 and 33 having a predetermined length via a space 34. The base sides of the rectangular square members 33 and 33 are movable by a support shaft (not shown), and the base side is always urged to the rear side in FIG. In other words, the guide and urging roller 37 is brought into contact with the base side of the rectangular square members 33 and 33 by the rotating shaft 31 and the link member 32 to urge the pressing means 30 rearward. The situation is not open).

That is, the guide and biasing roller 37 is configured to constantly bias the base side to the opposite side of the support means 20 by the compression coil spring 35, and the pressing means 30 is separated from the support means 20. In this example, the configuration is as described above. However, a known technique can be used as long as the pressing unit 30 is a unit that can always maintain an open state.
Further, on the free end side of the pressing means 30, a connecting portion 36 for connecting the two rectangular rectangular bars 33, 33 is provided. In addition, a plurality of irregularities are formed on the surface 33a of the two strips of rectangular bars 33, 33 that come into contact with the tire T. Furthermore, the holding means 30 of this example is formed so that the connecting part 36 on the free end side can be engaged with and disengaged from the fixing means 40 provided with the hook 41.

  The connecting portion 36 on the distal end side of the pressing means 30 engages with a hook 41, and the hook 41 together with the air cylinder 70 forms a fixing means 40. The air cylinder 70 is provided with an operating rod 42, and the hook 41 is connected to the air cylinder 70. As described above, the air cylinder 70 is operated by the operation of the second pedal P2, and the chucking opening / closing assistance is performed.

  In this way, since the fixing means 40 having the hook 41 and the air cylinder 70 is engaged and fixed on the free end side of the pressing means 30, the pressing means 30 is more firmly moved to the supporting means 20 side by the fixing means 40. The tire can be fixed by pressing, and cutting can be facilitated.

  In this example, the holding means 30 is configured by the rectangular square member 33. However, the present invention is not limited to this, and a round bar or plate may be used as long as the tire T can be pressed and fixed with the support means 20. However, it is preferable that the surface in contact with the old tire T is configured by means capable of preventing movement of the old tire T during cutting, including irregularities.

  Further, in this example, the space (width) for pressing both sides of the cut portion of the tire T of the pressing means 30 is formed larger than the space 23 in which the rotating teeth 10 formed in the support means 20 enter. In this way, the space (width) 34 between the two rectangular square members 33, 33 of the pressing means 30 is configured with a larger space, so that both sides of the cut portion of the tire T can be formed by the pressing means 30. When pressing to the support means 20 side, as shown in FIG. 4, the tire T is cut by the lifting by the convex portions 24, 24 on the support means 20 side and the force by the pressing means 30 pressing to the support means side. It is possible to rupture the portion more securely toward the direction of tearing, and more reliably torn.

Next, a method for cutting the tire T using the tire T cutting device S having the above-described configuration will be described with reference to FIG.
First, in the tire support step S <b> 1, the cut portion of the tire (including the old tire) T is disposed on the support means 20. In the case of the tire T that remains in a ring shape, in this example, the support means 20 is formed in a range smaller than the size of the inner ring (space) of the tire T, whereby the support means 20 and the fixing means are formed in the space of the tire T. 40 can be passed. Thereby, even if the tire is not cut, the two ridges 22 and 22 can support the entire tire T on the base 21.

  On the other hand, when the partially cut tire T is cut more finely, it is arranged directly on the two ridges 22, 22 on the base 21 with the inner ring side down. At this time, due to the plurality of projections and depressions on the upper surfaces 22a and 22a of the two ridges 22 and 22, the positional deviation is eliminated, and it is sandwiched by the supporting means 20 and the pressing means 30 by the pressing process S2 described below, Tire T does not move.

  In addition, when the tire T is supported, a convex portion 24 higher than a plurality of concaves and convexes is formed on the portion where the tire T is placed at a substantially central position of the two strips 22, 22. The tire T is arranged so that the back side (inner ring side) of the surface of the tire T is located.

After the tire support step S1, a pressing step S2 is performed. At this time, the power of the cutting device S is turned on and off by the switch 14. In this example, the power is turned on in the pressing step S2, but the power may be turned on before the tire support step S1.
In the pressing step S2, both sides of the cut portion of the tire T are pressed toward the support means 20 after the tire supporting step S1. That is, both sides of the cut portion of the tire T supported by the support means 20 are pressed by the pressing means 30, and the tire T is fixed so as to press and hold the tire T with the support means 20.

  The holding means 30 of this example is configured so as to be always separated to the side opposite to the supporting means 20 by a compression coil spring 35 that urges the guide and urging roller 37. However, the holding means 30 is pressed by the first pedal P1. Is operated and chucking is performed by a cylinder device (not shown). That is, when the first pedal P1 is operated, the pressing means 30 acts against the compression coil spring 35 urging the guide and urging roller 37 by an air cylinder (not shown) so as to press it toward the support means 20, The tire T is sandwiched between the support means 20. At this time, since the unevenness is formed on the surfaces 33a and 33a of the two rectangular rectangular bars 33 and 33 that are in contact with the tire T, the old tire T can be prevented from moving and fixed.

  Further, on the free end side of the holding means 30, a connecting portion 36 for connecting the two rectangular rectangular bars 33, 33 is provided, and this connecting portion 36 can be engaged with and disengaged from the fixing means 40 including the hook 41 and the air cylinder 70. Therefore, if the hook 41 is hooked on the connecting portion 36 with the operating rod 42 and the operation pedal P2 is operated, the hook 41 is pulled by the air cylinder 70 and the holding means 30 is moved downward (on the support means 20 side). ) Is firmly pushed down to ensure more clamping. Thus, when the hook 41 is engaged with the connecting portion 36 and the second pedal P2 is operated, the hook 41 is moved downward (to the support means 20 side) by the air cylinder 70 and pulled down to a predetermined position. Become. The fixing means 40 is released so that the second pedal P2 is operated or a limit switch (not shown) is automatically released when the rotating tooth 10 cuts the old tire T and reaches a predetermined position. Can be configured.

  Further, when the first pedal P1 is operated again, the supply of air pressure from the air cylinder (not shown) to the pressing means 30 is released, and the pressing means 30 is released by the guide and biasing roller 37 by the biasing of the compression coil spring 35, It operates so as to be spaced apart from the support means 20. That is, it performs chucking opening and closing. In addition, although the compression coil spring 35 is used in this example, it is also possible to constitute so as to perform urging by means other than this.

  And in cutting process S3, the rotation tooth | gear 10 is rotated to the space 23 of the support means 20, and the cutting location of the tire T is cut | disconnected while pressing the tire T firmly to the support means 20 by pressing process S2. In this cutting, when the operation pedal P3 is operated, the rotating teeth 10 and the like swing and the tire T is cut. At this time, the portion of the tire T located between the pressing means 30 is cut, and this portion is performed by the rotary teeth 10 entering the space 23 of the support means 20 along with the cutting.

  At this time, the convex portion 24 is present, and at the same time, the space 23 into which the rotating tooth 10 formed on the support means 20 enters, the space that presses both sides of the cut portion of the tire T of the pressing means 30 (that is, two rectangular bars 33 and 33). Space 34) is formed large, the old tire T is pushed up from the lower side, and is further firmly pressed by the holding means 30 toward the supporting means 20 side. As shown in FIG. 4, the initial cut portion is largely ruptured toward the cracking direction by the force of the pressing means 30 and can be more reliably torn. The adhesion of rubber can be further prevented, and the wire is directly cut.

  After cutting the tire T as described above, the tire T after cutting is removed in an extraction step S4. And in order to cut | disconnect the next tire T, it carries out from above-mentioned process S1, but when complete | finishing cutting | disconnection, a power supply is turned off by the switch 14. FIG.

In the above example, the ear T is cut one by one. However, it is also possible to use a plurality of these rotating teeth 10 to cut a plurality of locations at once.
Further, in the above example, the rotating tooth 10 is swung by the operation pedal to cut the tire T. However, ON / OFF control is performed by a detecting means such as a limit switch to automatically cut the tire T. You can also.

It is a schematic structure perspective view of the cutting device concerning one example of the present invention. It is principal part explanatory drawing which shows a support means and a pressing means. It is explanatory drawing which shows a cutting process. It is a partial expanded explanatory view of a cutting process. It is a schematic structure perspective view of the cutting device which shows the position at the time of cutting of a rotation tooth. It is a block diagram of a cutting process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rotating tooth 11 Rotating shaft 12 Link part 13 Operation lever 20 Support means 21 Base 22 Projection 22a Surface 23 Space 24 Protruding part 30 Pressing means 31 Rotating shaft 32 Link member 33 Rectangular square member 33a Surface 34 Space 35 Spring 36 Connection part 37 Guide and urging roller 40 Fixing means 41 Hook 50 Mounting base S Cutting device K Cover M Motor T Tires P1 to P3 Operation pedal

Claims (9)

A rotating tooth that cuts the tire; a support means that supports the opposite side of the outer periphery of the tire; and a pressing means that presses both sides of the cut portion of the tire against the supporting means side, and is positioned between the pressing means A tire cutting device, wherein the tire is cut with the rotating teeth. The tire cutting device, wherein the rotating tooth is configured to rotate at a low speed. The tire cutting device according to claim 1, wherein the support means is formed with a space into which the cutting teeth enter. A tire cutting device, wherein a surface of the support means that contacts the tire is formed with a plurality of irregularities. Cutting the tire, wherein a plurality of irregularities are formed on a surface of the support means that contacts the tire, and a convex portion higher than the plurality of irregularities is formed on a part of the surface that contacts the tire. apparatus. A tire cutting device, wherein the pressing means has a plurality of irregularities formed on a surface in contact with the tire. A tire cutting device, wherein a space for pressing both sides of a cutting portion of the tire of the pressing means is formed larger than a space into which the cutting teeth formed in the supporting means enter. The tire cutting device according to claim 1, wherein the pressing means is detachable from a fixing means having a hook on the free end side. A tire support step of supporting the tire with a support means having a space at the cut portion of the tire;
After the tire supporting step, a pressing step of pressing both sides of the tire cutting portion to the supporting means side by a pressing unit;
A cutting step of cutting the cut portion of the tire by rotating the rotating tooth at a low speed to the space of the support means while pressing the tire to the support means by the pressing step,
An extraction process to remove the tire after cutting;
A method for cutting a tire, comprising:

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