JP2000117682A - Crosswise cutter for used tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a rotating cutter which has a strong cutting edge and is rarely worn and damaged to easily and securely cut a used tire crosswise, regarding a device which cuts the used tire crosswise at the center position of a tire width. SOLUTION: This device supports a raised used tire in a state where an upper part of the tire covers thereon, and has a tire receiving roller 11 rotating about a horizontal shaft 10, and a rotating cutter 7 rotating about a horizontal shaft 6 at a tip portion of a vertical moving arm 4 supported with a horizontal shaft 3 so as to vertically turn. The used tire is put between the tire receiving roller 11 and the rotating cutter 7 to be press-cut. At a position just before the rotating cutter 7 contacts with the tire receiving roller 11, a stopper male thread 19 prevents the rotating cutter 7 from moving to the tire receiving roller 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting a used tire into a wheel at one half of the tire width.

[0002]

2. Description of the Related Art Used tires are cut into two wheels and divided into two parts.
It has been proposed to prevent runoff of soil by exposing about m from the ground. In order to use the tire in such an application, it is necessary to cut the old tire at a position that is a half of the tire width.

[0003] As described in Japanese Utility Model Publication No. Hei 6-44630, a device for cutting a wheel in such a manner that the cutting edge of the upper rotary cutter enters into a concave groove on the outer periphery of a tire receiving roller is used for different purposes. A cutting structure has been proposed.

[0004]

In such a structure, the edge of the rotary cutter does not hit the rigid body, so that the edge of the edge is little worn. However, the edge of the rotary cutter bites into an old tire supported in the space by sandwiching both sides. Because the tire is cut, it is difficult to cut, coupled with the elasticity of the tire. Therefore, it is necessary to sharpen the cutting edge.

[0005] As described above, the rotary cutter in which the cutting edge is sharpened to improve the cutting performance has a disadvantage that the cutting edge is not only worn quickly, but also easily damaged when hitting a wire embedded in the tire. There is also.

The technical problem of the present invention is to focus on such a problem and to make it possible to easily and surely cut an old tire even with a rotary cutter having a strong cutting edge and a small amount of wear and damage.

[0007]

The technical problem of the present invention is solved by the following means. The invention of claim 1 is
Tire bearing roller that rotates around a horizontal axis while supporting it with the upper part of the old tire set up, and rotation around the horizontal axis at the tip of a vertical movement arm that is supported to be able to rotate up and down on the horizontal axis And has a structure in which an old tire is sandwiched and pressed between the tire receiving roller and the rotary cutter. And, at a position just before the rotary cutter comes into contact with the tire receiving roller, there is provided stopper means for preventing the rotary cutter from moving toward the tire receiving roller.

As described above, since the rotary cutter has the stopper means for preventing the rotary cutter from moving toward the tire receiving roller at a position just before the rotary cutter comes into contact with the tire receiving roller, the rotation of the tire receiving roller and the rotary cutter is prevented. When the old tire is pushed and cut with the old tire interposed therebetween, it is possible to prevent the rotary cutter from contacting the metal tire receiving roller and damaging the cutting edge.

Further, since the rotating cutter can be brought close to each other just before coming into contact with the tire receiving roller and cut with the old tire interposed therebetween, the old tire can be pushed and cut on the hard metal tire receiving roller. it can. As a result, it is easy to cut, there is no need to use a special rotary cutter with a sharp edge, and it is possible to use a robust rotary cutter that does not have the risk of being damaged even if it hits a wire etc. in old tires, and the rotary cutter has a long life .

According to a second aspect of the present invention, the stopper means according to the first aspect includes a male screw screwed and supported on a non-movable side of the apparatus main body or the like. It has a structure in which it comes into contact with a part integral with the moving arm and prevents its downward rotation at a predetermined position.

As described above, since the tip of the male screw screwed and supported on the apparatus main body side comes into contact with the vertically moving arm which supports the rotary cutter, thereby preventing the downward rotation thereof, it is simple. The stopper means can be realized with a simple structure, and the positioning of the rotary cutter can be realized with high accuracy. Also,
Even if the outer diameter is reduced as a result of grinding the edge of the rotary cutter when the edge of the rotary cutter is worn, it can be easily coped with by adjusting the male screw.

According to a third aspect of the present invention, a pair of guide rollers for positioning the old tire are supported on the vertical arm by a horizontal shaft so as to sandwich the old tire according to the first or second aspect from both sides. It is supported by the tip of the guide arm, and when the vertical movement arm is pivoted up,
The distal end of the guide arm also has a structure that rotates and ascends.

As described above, since the structure is such that the used tire is positioned between the pair of guide rollers so as to be sandwiched from both sides, the rotation of the used tire is stabilized, and as a result, the used tire is positioned at exactly one half of the tire width. Can be cut and split into two. Also,
Since the guide arm supporting the guide roller is supported on the horizontal axis with respect to the vertical movement arm, when the vertical movement arm descends, the pair of guide rollers supported by the guide arm descend first. After the old tire is sandwiched from both sides, the rotating cutter contacts the old tire. As a result, the cutting can be started in a state where the old tire is positioned with being sandwiched from both sides and is stabilized.

According to a fourth aspect of the present invention, there is provided a structure in which the pair of guide rollers according to the third aspect are urged by elastic means in a direction approaching each other. In this way, the pair of guide rollers is configured to be pushed open against the elasticity of a spring or the like, so that when the guide roller comes down and hits both sides of the old tire, the guide roller is pushed and opened by the old tire. It will look like sandwiching old tires from both sides. As a result, the old tire can be guided stably and a certain position can be cut.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a description will be given of an embodiment of how a wheel cutting device according to the present invention is actually embodied. 1 and 2 are perspective views showing the entirety of an embodiment of an old tire wheel cutting device according to the present invention. FIG. 1 is a perspective view seen from the tire attaching / detaching side, and FIG. 2 is a perspective view seen from the opposite side. .

Reference numeral 1 denotes an apparatus main body which also serves as a support, and includes a pair of left and right side plates 1a and 1b, a front plate 1c, a ceiling plate 1d, and a bottom plate 1.
e is integrated and has a U-shaped box shape in cross section. The arm 4 is supported by a horizontal shaft 3 attached to a pair of bearing plates 2a and 2b integrally fixed on the upper side of the front plate 1c so as to be vertically rotatable.

A disk-shaped rotary cutter 7 is fixed to a horizontal shaft 6 supported by a pair of bearing plates 5a and 5b at the lower end of the vertical movement arm 4. The right side plate 1b
The tire support arm 8a projects horizontally below the rotary cutter 7 from the device base 8 integrally connected to the
A tire receiving roller 11 is fixed to a horizontal shaft 10 supported by a pair of bearing plates 9a, 9b fixed to the upper surface.

A rotating shaft 14 of a gear 13 meshing with a gear 12 fixed to the horizontal shaft 10 is connected to a motor in the device base 8 via a chain shown by a broken line. On the other hand, the horizontal shaft 6 of the rotary cutter 7 is also connected to a motor in the apparatus base 8 via a chain indicated by a broken line and a chain in the apparatus main body 1 or the apparatus base 8. Moreover,
The chains are connected so that the tire receiving roller 11 and the rotary cutter 7 rotate in opposite directions.

FIG. 3 is a perspective view of the apparatus main body 1 viewed from the back. A horizontal shaft 15 fixed between the back arms 4a and 4b extending from the back of the vertically moving arm 4 through the window hole 1f on the front plate 1c of the apparatus body 1 and extending into the apparatus body 1 from the back. The upper end of the piston rod 17 of the hydraulic cylinder 16 is connected. The lower end of the hydraulic cylinder 16 is connected to the apparatus main body 1 via a horizontal shaft 18.

When the piston rod 17 is extended and the back arms 4a and 4b of the vertically movable arm 4 are pushed up, the vertically movable arm 4 is rotated down about the horizontal shaft 3 and the rotary cutter 7 is rotated by the tire receiving roller 11. By stopping just before contacting the old tire, the old tire on the tire receiving roller 11 is cut.

As described above, a male screw 19 is provided on the ceiling plate 1d as a stopper means for restricting the lowering position of the rotary cutter 7 to a constant value. A support nut 20 is fixed to the inner surface of the ceiling plate 1d by welding, and a male screw 19 is screwed to the support nut 20 to stand upright. The lock nut 21 is screwed to the lower end of the male screw 19 below the support nut 20.

Therefore, the rotary cutter 7 shown in FIGS.
The vertical movement arm 4 is pivoted down to a position where the male screw contacts or does not contact the tire receiving roller 11, and the position of the male screw 19 is adjusted so that the lower end of the male screw 19 contacts the horizontal shaft 15 at that position. Is adjusted and fixed with the lock nut 21.

FIG. 4 shows a state in which the old tire T is set on the tire receiving roller 11, wherein (1) is a longitudinal sectional view as viewed from the front, and (2) is a left side view (as viewed from the direction of arrow a1 in FIG. 1). FIG. As shown in the figure, the tire receiving roller 11 on the tire supporting arm 8a projecting sideways is supported so as to cover the upper part of the old tire T.

Then, as described above, with the tire receiving roller 11 and the rotary cutter 7 rotated in opposite directions, the piston rod 17 of the hydraulic cylinder 16 is extended, and the vertically movable arm 4 is turned down. Then, the old tire T is bitten into the old tire T so that the old tire T is sandwiched between the rotary cutter 7 and the tire receiving roller 11, and the old tire T is cut off and cut. In this way, when the old tire T is rotated once, the old tire T is cut at half the width of the old tire T and is divided into two.

As described above, even when the old tire T is cut, the stopper means including the male screw 19 can be used.
Since the rotary cutter 7 stops just before coming into contact with the tire receiving roller 11, the cutting edge of the rotary cutter 7 does not hit the rigid tire receiving roller 11 to be crushed or worn.

If the cutting edge of the rotary cutter 7 is worn while repeatedly cutting the old tire, the outer diameter of the rotary cutter 7 is reduced by grinding the cutting edge. Loosen nut 21 and screw 1
9 can be raised by increasing the lowering amount of the vertical movement arm 4.

5 and 6 are perspective views showing a state in which a means for preventing run-out when the old tire T to be cut is rotated is provided, and FIG. 7 is a perspective view of a main part thereof as viewed from the front. . 2
Reference numeral 2 denotes a guide arm, which is supported by a horizontal shaft 23 on the side of the vertical movement arm 4. Back arm 22a extending from guide arm 22 to the back and apparatus body 1
Is connected to the rod 24 by pins P1 and P2.

A horizontal support frame 22f is fixed to the distal end of the guide arm 22, and a pair of horizontal shafts 25a and 25b are provided at both ends thereof substantially parallel to the guide arm 22. Then, the rotating cylinders 27a and 27b are put on the vertical shafts at the lower ends of the downward opening / closing levers 26a and 26b rotatably supported by the two horizontal shafts 25a and 25b,
It constitutes a guide roller.

The rotary wings 30a, 3a supported by the horizontal shaft 29 on the lower support plate 28 of the support frame 22f.
0b and the opening / closing levers 26a, 26b are connected to the rods 31a, 31b by pins P1, P2.
Then, between the arm 32 connected to the bearings of the rotary wings 30a and 30b and the tip 22b of the guide arm 22,
A tension coil spring 33 is stretched.

Since the rotating blades 30a and 30b, which are long in the vertical direction, are rotated counterclockwise by the tension coil spring 33, the opening / closing levers 26a and 26b are pulled in the closing direction, and FIGS. 6 and 7 (1). As a result, both rotary cylinders 27a and 27b are closed.

The open / close levers 26a and 26b are bent in a crank shape toward the rotary shaft 10 of the tire receiving roller 11, so that the old tire T set as shown in FIG. From the spring force.

When the old tire T is mounted on the tire receiving roller 11, the piston rod 1 of the hydraulic cylinder 16 is used.
7, the vertical arm 4 is pivoted up and retracted as shown in FIG. 6, but in this state, the guide arm 22 is also pivoted up with respect to the vertical arm 4 about the horizontal shaft 23. And a pair of rotary cylinders 27
a and 27b are closed by spring force.

When the piston rod 17 of the hydraulic cylinder 16 is extended with the upper part of the old tire T set on the tire receiving roller 11 and the vertical movement arm 4 is turned down, the guide arm 22 Around the vertical movement arm 4.

As a result, the lower ends of the rotary cylinders 27a and 27b come into contact with both upper portions of the old tire T first. Vertical movement arm 4
When the rotary cylinders 27a and 27b are further lowered, FIG.
As shown in (2), the rotary cylinders 27a and 27b are pushed open on both sides of the upper portion of the tire against the spring force of the tension coil spring 33.

In this state, the rotary cutter 7 is mounted on the old tire T
Will bite into. As described above, the old tire T rotates while being sandwiched between the rotating cylinders 27a and 27b by the spring force, and thus can be rotated stably without lateral vibration. As a result, the tire is cut at exactly one half of the tire width, and the tire can be divided into two sections.

In the above embodiment, the hydraulic cylinder 16
, The back arm side of the vertical movement arm 4 is pushed up to cut, but the hydraulic cylinder 16 can be arranged so that the vertical movement arm 4 side is pulled down at the time of cutting.

The stopper means for stopping the rotary cutter 7 at a position immediately before coming into contact with the tire receiving roller 11 supports the male screw 19 upright on the apparatus base 8 side, and stops when the vertical movement arm 4 hits the upper end thereof. It is also possible to have a structure that does this. Further, instead of supporting the male screw 19 on the non-movable side such as the apparatus main body 1 and the apparatus base 8, it is also possible to attach the male screw 19 to the movable side such as the vertically moving arm 4. A cam can be used instead of the male screw 19.

[0038]

According to the structure of the first aspect, since the rotary cutter has the stopper means for preventing the rotary cutter from moving toward the tire receiving roller at a position just before the rotary cutter comes into contact with the tire receiving roller, When the old tire is pushed and cut between the roller and the rotary cutter, the rotary cutter can be prevented from contacting the metal tire receiving roller and damaging the cutting edge.

In addition, since the rotating cutter can be brought close to each other just before contacting the tire receiving roller and cut with the old tire interposed therebetween, the old tire can be pushed and cut on the hard metal tire receiving roller. it can. As a result, it is easy to cut, there is no need to use a special rotary cutter with a sharp edge, and there is no danger of being damaged even if it hits a wire in old tires. .

According to the second aspect, the vertical movement arm supporting the rotary cutter abuts against the tip of the male screw screwed and supported on the apparatus main body side, thereby preventing the downward rotation. The stopper means can be realized with a simple structure, and the positioning of the rotary cutter can be realized with high accuracy. Further, even if the outer diameter is reduced as a result of grinding the edge of the rotary cutter when the edge of the rotary cutter is worn, it can be easily coped with by adjusting the male screw.

According to the third aspect, the structure is such that the used tire is positioned by being sandwiched between the pair of guide rollers from both sides, so that the rotation of the used tire is stabilized, and as a result, the used tire has just one half of the tire width. It can be cut at the position and split into two. Also, since the guide arm supporting the guide roller is supported on the horizontal axis with respect to the vertical movement arm, when the vertical movement arm descends, the pair of guide rollers supported by the guide arm first After descending and sandwiching the old tire from both sides, the rotating cutter contacts the old tire. As a result, the cutting can be started in a state where the old tire is positioned with being sandwiched from both sides and is stabilized.

According to the structure of the fourth aspect, since the pair of guide rollers are urged in the closing direction by the elastic force of a spring or the like, when the guide rollers descend and hit both sides of the old tire, the guide is guided by the old tire. The rollers are pushed open, putting the old tire on both sides. as a result,
Old tires can be guided in a stable manner, and certain positions can be cut.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of an old tire wheel cutting device according to the present invention as viewed from a tire attaching / detaching side.

FIG. 2 is a perspective view of the embodiment of the wheel cutting device for old tires according to the present invention as viewed from the side opposite to FIG.

FIG. 3 is a perspective view of the apparatus main body side as viewed from the back.

FIG. 4 is a state in which an old tire is set on a tire receiving roller, (1) is a longitudinal sectional view seen from the front, and (2) is a left side view.

FIG. 5 is a perspective view showing an embodiment of a guide means for an old tire.

FIG. 6 is a perspective view showing a state where the guide means of FIG. 5 is retracted up and down.

7 is a perspective view of the guide means of FIG. 5 as viewed from the front side, where (1) is a closed state and (2) is an open state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apparatus main body 2a, 2b Bearing plate 3 Horizontal axis 4 Vertically moving arm 7 Rotating cutter 8 Device base 11 Tire receiving roller 15 Horizontal axis 16 Hydraulic cylinder 17 Piston rod 18 Horizontal axis 19 Male screw for stopper 20 Support nut 21 Lock nut 22 Guide Arm 22a Back arm 23 Horizontal axis 26a, 26b Open / close lever 27a, 27b Rotating cylinder (guide roller)

Claims (4)

[Claims] 1. A tire receiving roller which is supported with an upper portion of an old tire placed thereon and is rotated around a horizontal axis, and a vertical movement arm which is vertically rotatably supported by a horizontal axis. A rotary cutter that rotates around an axis, and has a structure in which an old tire is sandwiched between the tire receiving roller and the rotary cutter and pushed off, and the rotary cutter is on the verge of contact with the tire receiving roller. A wheel cutting device for an old tire, comprising stopper means for preventing the rotary cutter from moving toward the tire receiving roller at the position. 2. The stopper means comprises a male screw threadably supported on a non-movable side of the apparatus main body or the like, and a tip of the male screw contacts the vertical arm or a part integral with the vertical arm. 2. The wheel cutting device for an old tire according to claim 1, wherein the device is configured to contact and prevent the downward rotation at a predetermined position. 3. A pair of guide rollers for positioning the old tire so as to sandwich the old tire from both sides are supported at the tip of a guide arm supported on a horizontal axis with respect to the vertically moving arm, The wheel cutting device according to claim 1 or 2, wherein the tip of the guide arm also rotates and rises when the vertically moving arm rotates and rises. 4. The wheel cutting device for an old tire according to claim 3, wherein said pair of guide rollers are urged by elastic means in a direction approaching each other.