JPS61130030A - Method of automatically winding tyre tread rubber and apparatus therefore - Google Patents

Abstract

PURPOSE:To make it possible to effect a winding operation efficiently, by providing a tread wind thickness sensor capable of being adjusted movably to the front or rear and right or left of an automatic winding apparatus. CONSTITUTION:An automatic winding apparatus 5a can be reciprocated on a threaded shaft 5a and guide rails 4a, 4b by driving a reversible motor 5 installed on a truck 3. The upper end of the automatic winding apparatus 2 is provided with a plurality of stitcher rollers 6 for stitching a belt-shaped tread (W) fed from an extruder to the outer circumferential surface of a tyre (T). A tread wind thickness sensor 7 for detecting the thickness of the wind of the tread (W) wound onto the tyre (T) is retractably provided below the stitcher roller 6, so that the thickness of the wind of the tread (W) during the winding operation can be measured by the tread wind thickness sensor 7 all the time, and when the thickness of the wind reaches a certain set value, a slide driving apparatus 12 and a cylinder 10 are actuated and the detecting position of the tread wind thickness sensor 7 is moved relative to the tread winding position.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and device for automatically wrapping tire tread rubber, and more particularly, the present invention relates to a method and apparatus for automatically wrapping tire tread rubber, and more specifically, for example, the invention relates to a method and an apparatus for automatically wrapping tire tread rubber. The present invention relates to a method and apparatus for continuously and automatically wrapping tire tread rubber.

[Prior art]

Conventionally, as a method for continuously wrapping tread rubber around large tires for construction vehicles, etc., for example, a tread wrapping device installed on the side of a tire support device is used to wrap a band-shaped tread supplied from a calendar into a template. along the shape of the tire, from one side of the tire width (wrapping is on the equipment side) to the other side (
The conventional method was to repeatedly wind the wire with an inclination in only one direction (toward the tail side of the winding device).

However, in the case of such a conventional tread winding method, when winding multiple layers of tread, the tread winding device is stopped every time one layer of l/red winding is completed, and one side of the tire width ( Since the worker had to move the tire to the main body side and start wrapping again, the worker was always close to the tire and had to make preparations for the tire wrapping, which led to poor work efficiency and a lot of work. There was a problem in that it required a lot of effort and time.

In addition, since the conventional band-shaped tread is always wound in a fixed direction, the tire tread tends to peel off when the vehicle is running, resulting in a problem of shortening the tire life.

[Purpose of the invention]

This invention was devised by focusing on the conventional problems, and its purpose is to wrap a strip-shaped tread while reciprocating a device in the width direction of the tire. This eliminates the need for an operator to stop the machine each time and return it to the starting position, making it possible to perform the winding work more efficiently.Also, the winding process can be performed while constantly detecting the tread thickness. Automatic wrapping of tire tread rubber is a method and method that eliminates the need for templates, etc., and also reduces the number of reciprocations as it wraps back and forth in layers according to the set shape, and at the same time effectively prevents the progression of tread peeling. The present invention provides such equipment.

[Structure of the invention]

In order to achieve the above object, the present invention reciprocates a tread automatic winding device equipped with a tread thickness sensor movable in the width direction of a rotating tire supported by a tire support device. The belt-shaped tread supplied from the extruder is always kept at the position set relative to the tread by the tread thickness sensor depending on the winding direction, and the tread thickness is detected. The gist of the tread is to wrap the tread continuously in different thicknesses, and to wrap the tread in alternately different directions for each layer.

In addition, the present invention provides a tread automatic winding device that is disposed on the side of a tire support device that rotatably supports the tire, and is capable of moving toward and away from the tire, and can reciprocate in the width direction of the tire. The gist of this automatic winding is that the device is equipped with a tread thickness sensor that can be moved and adjusted in the front and back and left and right directions to detect the thickness of the tread that is continuously wrapped around the outer circumferential surface of the tire.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

1 and 2 show a front view and a plan view of a device for automatically winding a band-shaped tread W according to the present invention, and 1 shows a tire support that rotatably supports a large tire T such as a construction vehicle. The device 2 is an automatic winding device movably mounted on a truck 3 via guide rails 4a, 4b and a screw shaft 5a.

The automatic winding device 2 is driven by a forward/reverse drive motor 5 installed on the trolley 3 to rotate a screw shaft 5a and a guide rail 4. It reciprocates on a and 4b.

Further, a plurality of stitcher rollers 6 for stitching a band-shaped tread W supplied from an extruder (not shown) onto the outer circumferential surface of the tire T are disposed at the upper end of the automatic winding device 2 .

Further, a tread thickness sensor 7 for detecting the thickness of the tread W wound around the tire T is extendably provided below the stitcher roller 6.

As shown in FIGS. 3 and 4, the tread thickness sensor 7 is automatically wound on a base 8 supported by the device 2 in two directions in the tire width direction (in the vertical direction in FIG. 4).
Book slide rails 9a and 9b are installed. On the slide rails 9a, 9b, a cylinder 10 with a sensor 7a attached thereon is slidably mounted via a support plate 11, and the support plate 11 is connected to a slide drive device 12 (air cylinder) installed on the base 8. ) so that the lateral position of the sensor 7a can be changed arbitrarily. That is, the belt-shaped tread W supplied from the extruder is always kept at a relative position between the tread W and the sensor 7a by the tread thickness sensor 7 according to the winding direction, and the tread thickness is detected. .

Next, a method for wrapping the band-shaped tread W around the outer peripheral surface of the tire T will be explained with reference to FIG.

First, with respect to the tire T supported by the tire support device 1, the automatic winding device 2 installed on the trolley 3 is moved and positioned on one side of the tire T in the width direction (device main body side). .

In this state, one end of the band-shaped tread W supplied from the extruder is pressed onto the outer peripheral surface of the tire T via the stitcher roller 6, and the tire T supported by the tire support device 1 is fixed. rotate at a speed of In this way, as the tread W is being wound, the thickness of the tread W is measured by the tread winding thickness sensor 7, and when a certain set thickness is reached, the forward/reverse drive motor 5 rotates in the forward direction. Start. As a result, the automatic winding device 2 rotates the guide rails 4a, 4. The strip-shaped tread W, which moves from one side of the tire width toward the other along the tire width direction b, and at the same time has one end crimped onto the outer circumferential surface of the tire T, is sequentially wound in a constant inclination direction while moving along the tire width. move towards the other side.

In automatic winding, when the device 2 reaches the other side of the tire width and winds the first layer of tread, it is detected by a sensor (not shown) and the forward/reverse drive motor 5, which had been rotating in the normal direction, starts rotating in the reverse direction. , Accordingly, the automatic winding device 2 is
Move from the other side of the tire width (the tail side of the device) to the one side (the device main body side). As a result, the winding direction of the band-shaped tread W is reversed, and the second layer of 1-red W is wound in the completely opposite direction.

In addition, the tread W is wound in a multi-layered manner in this way, and during the winding process, the thickness of the tread W is constantly measured by the tread thickness sensor 7 until a certain set value is reached. Then, the slide drive device 12 and the cylinder 1° operate, and the position detected by the tread thickness sensor 7 moves relative to the tread wrapping position.

As described above, if the shape, direction, and layer of winding of the tread on the tire T are arbitrarily set at the beginning of the winding of the tread W, the tread can be wound continuously from the beginning of the winding to the end without requiring any human intervention. Generally speaking, the winding of the tread W can be done easily.

〔Effect of the invention〕

As described above, the present invention includes a device for automatically wrapping a tread on the side of a tire support device that rotatably supports the tire, which is capable of moving toward and away from the tire, and can reciprocate in the width direction of the tire. This automatic winding device is equipped with a tread thickness sensor that is movable and adjustable in the front and rear and left and right directions to detect the thickness of the tread that is continuously wrapped around the outer circumferential surface of the tire, and is supported by a tire support device. Automatic tread wrapping, which is equipped with a tread thickness sensor that can move in the width direction of a rotating tire, involves reciprocating the device and using a tread thickness sensor to collect a strip of tread supplied from an extruder. The relative position between the tread and the sensor is always maintained at the position set by the winding direction, and the tread thickness is continuously wound around the outer circumferential surface of the tire at a predetermined thickness while detecting the tread thickness. Since each winding layer is wound in a different manner alternately, there is no need for a worker to stop the device each time or return it to the starting position, making the winding work more efficient. In addition, since the winding is done while constantly detecting the tread thickness, there is no need for templates, etc.Furthermore, since the winding is done by back-and-forth winding with overlapping layers that follow the set shape, the number of back-and-forth movements can be reduced, and at the same time, the progress of tread peeling can be prevented. can be effectively prevented,
It has the effect of significantly extending the life of tires.

[Brief explanation of the drawing]

Fig. 1 is a front view of a device for automatically winding a band-shaped tread according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a front view of a tread thickness sensor, and Fig. 4 is a Top view of the figure,
FIG. 5 is an explanatory diagram showing a method of winding a band-shaped tread. DESCRIPTION OF SYMBOLS 1... Tire support device, 2... Automatic tread wrapping device, 7... Tread thickness sensor, T... Tire, W... Tread.

Claims (1)

[Claims] 1. An automatic tread wrapping device equipped with a tread thickness sensor movable in the width direction of a rotating tire supported by a tire support device is reciprocated, and an extruder A tread thickness sensor constantly maintains the relative position of the tread and the sensor at the position set by the winding direction, and the belt-shaped tread supplied from the tread is continuously maintained at a predetermined thickness on the outer circumferential surface of the tire while detecting the tread thickness. An automatic tire tread rubber wrapping method characterized in that the tire tread rubber is wrapped in a uniform manner and the tread is wound in alternately different directions for each layer. 2. An automatic tread wrapping device is installed on the side of the tire support device that rotationally supports the tire, and is capable of moving toward and away from the tire, and can reciprocate in the width direction of the tire. An automatic tire tread rubber wrapping device characterized in that the wrapping device is equipped with a tread thickness sensor that can be moved and adjusted in the front and rear and left and right directions to detect the thickness of the tread that is continuously wrapped around the outer circumferential surface of the tire.