JPS5921783B2 - tire cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire cutting device, and its purpose is to cut at least one part of a ring-shaped tire from which the wheel and tire bead have been removed, thereby cutting the used tire into strips more finely and uniformly. The object of the present invention is to provide a device that can cut to size, generates almost no chips or chips during cutting, and can perform cutting operations quickly and reliably with a small amount of power.

The configuration of the present invention will be described below with reference to the drawings shown as an embodiment of the present invention.

Reference numeral 1 denotes a vertical cutting blade shaft on which a number of circular knives 2 are fixed at regular intervals on the outer circumference, 3 is a gear fixed to the blade shaft 1, and the driving force of the motor 4 is transferred to a reducer 5 and a coupling device 6. is transmitted to the cutter shaft 1 via.

T is the tire before cutting, 8 is the tire after vertical cutting, 9 is a cutting tool shaft for cross cutting, and a large number of round knives 10 are fixed on the outer circumference at regular intervals. The knife shaft 9, like the knife shaft 1, is driven by the driving force of a motor. 11 is an extrusion cylinder that conveys the tire 8 after vertical cutting to a cross-cutting device;
2 is the tire after crossing.

Reference numeral 13 denotes a separating plate (see FIG. 5) in which a large number of narrow elongated holes 14 are provided in parallel to each other, and the round knife 2 passes through the elongated holes 14 and is attached to the support frame 15.

By providing this separation plate 13, the cut tire is prevented from falling. 16 is a concave roller having a large number of grooves IT on the entire outer periphery to fit with each round knife 2, and has a gear 18 on the end surface.

A gear 19 meshes with the gear 18, and at the same time meshes with a gear 20 that meshes with the gear 3 of the cutter shaft 1, and applies the driving force of the motor 4 to the concave roller 16 at the same time as the rotation of the cutter shaft 1. Transmit and rotate.

Reference numeral 21 denotes a toothing adjustment handle, and the round knife 2 gradually wears out from the state before the round knife 2 wears out (Fig. 4 A), resulting in concavities and
Even if the fitting position between the groove 17 of the surface roller 16 and the round knife 2 is misaligned, the fitting position of the gears 19 and 20 can be adjusted to fit the round knife 2 and the groove IT at the proper position ( Figure 4 mouth).

A water tank 22 is provided at the bottom of the knife shaft 1 so that only the upper part of the round knife 2 is exposed from the water, and is used to cool the round knife which is heated by frictional heat.

23 is a tire 8 cut into strips by the round knife 2;
The receiving stand 24 is a plate body for pushing out the strip-shaped tire 8 on the holding stand to a cutting device for cross-cutting, and the pushing cylinder 1
It is fixed to the 1 piston.

Reference numeral 25 denotes a front-back operation valve that moves the piston of the extrusion cylinder 11 forward and backward; 26 a vertical-direction operation valve 27 that moves the front part of the cylinder 11 whose rear end is rotatably supported; Adjusted by.

28 is a pneumatic compressor;

Reference numeral 29 denotes a concave roller of a cutting mechanism for cross-cutting, and the tip of the round knife 10 for cross-cutting is fitted into a number of grooves provided on the outer periphery.

The structure of the cross-cutting cutting mechanism constituted by the cross-cutting blade shaft 9, the concave roller 29, etc., and the mechanism for transmitting the driving force from the motor to the blade shaft and the concave roller are the same as those of the vertical cutting mechanism. The tire to be cut by the tire cutting device according to the present invention is prepared by cutting the bead portion A containing the wire into a circular shape in advance as shown in FIG.
, C, D, and E so that the tire can be opened into one sheet as shown in FIG. 7C. The tire may be cut at any desired position for ease of handling, such as by cutting the let part F into a ring shape. Next, the operation of the device according to the present invention will be explained.

As shown in FIG.
and the concave roller 16 (FIG. 1), the tire is cut into strips along an arc by the thin round knife 2 as shown by cutting line G in FIG. 7C. Therefore,
Due to the nature of the tire, it has a curved strip shape as shown in FIG. 8, and the cut tire 8 is received by the separation plate 13 and sent to the cradle 23 without being caught in the blade shaft 1. While the tire is being cut, the round knife 2 becomes hot due to frictional heat, but the round knife 2 rotates while being cooled in the water tank 22, and chips adhering to the knife are also removed, making the round knife 2 always sharp. It can be cut. The vertically cut strip-shaped tire 8 sent onto the pedestal 23 is removed by operating the front-back operation valve 25 to move the piston forward as shown in FIG. 6 and FIG.
By pressing, the curved tire 8 is straightened and at the same time fed between the round knife 10 for cross cutting and the concave roller 29.

On the other hand, when the plate body 24 advances close to the cross-cutting round knife 10, the piston 26 is moved upwardly by operating the vertical operation valve 27 so as not to interfere with the conveyance of the next strip-shaped tire 8 onto the pedestal 23. Rotate the cylinder 11 via the
The plate body 24 also rotates upward on the pedestal 23. Furthermore, by operating the operating valve 25, the plate 24 is moved back as shown in FIG. 6C, and by operating the operating valve 27, it is returned to its original position. The tire 8 fed to the cross-cutting round knife 10 is cut at regular intervals and sent out as uniformly uniform strips. If the cutting edge of the round knife decreases due to repeated use, it will be polished and the diameter of the round knife will become smaller.
Adjust the jaws 20 and 3 to install the round knife and the concave roller (Fig. 4).

In the above embodiment, a pneumatic compressor was used to operate the piston to push the vertically cut tire 8 to the cross cutting mechanism, but a hydraulic device or a screw gear mechanism may also be used.

Furthermore, the cutting device is provided with a thermal switch for controlling overcurrent as a safety device, so that it can be protected from impulse load when a stone or metal piece is caught between the round knife and the concave roller. Further, for example, a current indicator or a reporting buzzer may be provided between the motor section and the power switch to indicate the increase in cutting resistance due to wear of the cutting edge of the round knife, the amount of cutting, etc. The device of the present invention uses a thin circular knife as described above, so it can cut smoothly with little resistance and low power.The cut edge is smooth and the cut dimensions are uniform and free of variation, so it is easy to cut into fuel. When used as a raw material, it is easy to use as it is easy to adjust the amount of heat, and it is easy to process as a recycled rubber raw material because it can be conveyed smoothly and bucketed.

In addition, since the round knife operates while being cooled by water, it is not heated by frictional heat, hardly any chips or chips are produced, and there is no risk of backfire or ignition, making it safe. Furthermore, there are advantages such as less mechanical vibration and noise, and no foundation work is required for the equipment, making it easier to transport.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the device of the present invention, partially in section. FIG. 2 is a cross-sectional view of the conveyance section and vertical cutting blade cutting mechanism in the device of the present invention, FIG. 3 is a cross-sectional view showing the installed state of the blade shaft with a round knife and the concave roller in the same device, and FIG. 4 Figures 1 and 2 are explanatory diagrams showing the driving force transmission mechanism between the knife shaft and the concave roller in the same device.
This shows the cap-maru knife after it has been worn. Figure 5 A,
This figure shows the separation plate used in the device of the present invention, where A is a plan view and the opening is a sectional view. FIGS. 6A to 6B are side views showing the operating state of the conveying section in the apparatus of the present invention, and FIGS. 7A to 8 are explanatory views of the tire cutting state before being supplied to the apparatus of the present invention. 8 and 9 are plan views showing the operating state of the device of the present invention, with some parts omitted. 1,9...
・Knife shaft, 2, 10... Round knife, 11...
... Cylinder, 13 ... Separation plate, 16, 29
...Concave roller, 22...Water tank,
23... cradle.

Claims (1)

[Scope of Claims] 1. A number of circular knives are fixed at regular intervals on the outer periphery of a blade shaft having a gear at the end, and a separating plate is provided with a number of long holes through which each of the round knives passes. The tip of the round knife is interposed between a plurality of grooves provided on the outer periphery of the concave roller, and the blade shaft and the concave roller are rotatable by connecting each end thereof to a driving force transmission mechanism of a motor. A tire cutting mechanism consisting of a vertical cutting mechanism and a horizontal cutting mechanism are arranged so as to be perpendicular to each other, and a pedestal is provided in the direction in which the cut tire is assembled from the vertical cutting mechanism, and this pedestal is installed. A tire conveying mechanism is provided through which a piston having a plate fixed to its tip is moved forward and backward at a position corresponding to the cross-cutting tire cutting mechanism,
A tire cutting device characterized in that the transport mechanism is configured to supply the vertically cut tire to a cross tire cutting mechanism. 2. The tire cutting device according to claim 1, wherein only the upper part of the round knife is exposed above the water surface and the knife shaft is disposed within the water tank.