JPH0533138B2 - - Google Patents

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, it relates to a method and device for automatically wrapping tire tread rubber, and more particularly, it relates to a method for automatically wrapping tire tread rubber, and more specifically, for example, a method 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 such as those for construction vehicles, a band-shaped tread supplied from a calendar is used, for example, by a tread wrapping device disposed on the side of a tire support device. A method has been used in which the tire is repeatedly wound in one direction along the shape of the template from one side of the tire width (the side of the winding device) to the other side (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 tread winding is completed, and the tread winding device is stopped on one side of the tire width (body side). Since the work involved moving the tire and starting the wrapping again, the worker had to stay close to the tire and set up the wrapping process, which not only resulted in poor work efficiency but also a lot of effort and time. There was a problem that required .

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 problems of the conventional tire, and its purpose is to wrap a band-shaped tread while reciprocating a tread wrapping device in the tire width direction. According to
This eliminates the need for a worker to stop the winding device each time and return it to the starting position, making it possible to perform the winding work more efficiently.Also, since the winding is performed while constantly detecting the winding thickness of the tread, templates, etc. To provide a method and device for automatically wrapping tire lead rubber, which eliminates the need for tire red rubber, and also reduces the number of reciprocations since the tire red tape is wound back and forth in layers along the set shape, and at the same time effectively prevents the progress of peeling of the tread. be.

[Structure of the invention]

In order to achieve the above object, the present invention provides an automatic winding method that automatically wraps a belt-shaped rubber material around a rotating tire while detecting the thickness of the tread. An automatic tread wrapping device equipped with a tread winding thickness sensor movable in the width direction of the tire is reciprocated, and the band-shaped tread supplied from the extruder is connected to the tread by the tread winding thickness sensor. While keeping the relative position with the sensor at the position set by the winding direction and detecting the tread thickness, the tire is continuously wrapped around the outer circumferential surface of the tire to a predetermined thickness. The gist of this is to alternately wrap each wire in different ways.

The present invention also provides a device for continuously wrapping a band-shaped rubber material to a predetermined thickness around the outer peripheral surface of a rotating tire supported by a tire support device, comprising:
On the side of the tire support device that supports the tire in rotation,
An automatic tread wrapping device is provided that can approach and move away from the tire, and can reciprocate in the width direction of the tire. The gist of this invention is to provide a tread winding thickness sensor that can be moved and adjusted in the front and back and left and right directions to detect the thickness.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings.

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

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

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

As shown in FIGS. 3 and 4, the tread winding thickness sensor 7 is mounted on a base 8 supported by the automatic winding device 2, and has two sensors extending in the tire width direction (up and down direction in FIG. 4). slide rail 9a,
9b has been installed. This slide rail 9
A cylinder 10 with a sensor 7a mounted thereon is slidably mounted on the support plate 11, and the support plate 11 is connected to the sensor 7a by a slide drive device 12 (air cylinder) placed on the base 8. It is configured such that the lateral position of 7a can be changed arbitrarily. . That is, the belt-shaped tread W supplied from the extruder is measured by the tread winding thickness sensor 7 and the tread W and the sensor 7a.
The device always maintains the relative position with respect to the winding direction at a position set according to the winding direction, and detects the tread thickness.

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, the automatic wrapping device 2 installed on the trolley 3 is moved to the tire T supported by the tire support device 1, 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 circumferential surface of the tire T via the stitching roller 6, and the tire T supported by the tire support device 1 is held constant. 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 starts rotating in the forward direction. Start. As a result, the automatic winding device 2
As the screw shaft 5a rotates, the guide rail 4
The band-shaped tread W, which moves from one side of the tire width to the other along the widths a and 4b, and at the same time has one end crimped onto the outer peripheral surface of the tire T, is sequentially wrapped in a constant inclination direction and wraps around the tire. Move towards the other side of the width.

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

In addition, the tread W is wound in a multi-layered manner in this way, and during the winding process, the winding thickness of the tread W is constantly measured by the tread winding thickness sensor 7, and when it reaches a certain set value, The slide drive device 12 and the cylinder 10 operate to move the detection position of the tread winding thickness sensor 7 relative to the tread winding device.

As mentioned above, at the beginning of winding the tread W, the tire T
By arbitrarily setting the winding shape, winding direction, winding layer, etc. of the tread W on the tread W, the winding work of the tread W can be performed continuously from the beginning of winding to the end of winding without the need for manpower. be.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following excellent effects.

There is no need for a worker to stop the winding position each time or return it to the starting position, and therefore,
The winding work can be done efficiently, and there is no need for templates as the winding is done while constantly detecting the winding thickness of the tread.Furthermore, since the winding is done by back-and-forth winding with overlapping layers following the set shape, the number of back-and-forth trips is reduced. At the same time, it is possible to effectively prevent tread separation signals, thereby significantly extending the life of the tire.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic band-shaped tread winding device embodying the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a front view of a tread winding thickness sensor, and Fig. 4 is Fig. 3. FIG. 5 is an explanatory diagram showing a method of winding a band-shaped tread. 1... Tire support device, 2... Automatic tread winding device, 7... Tread winding thickness sensor, T...
...Tires, W...tread.

Claims (1)

[Scope of Claims] 1. An automatic winding method that automatically wraps a belt-shaped rubber material around a rotating tire while detecting the thickness of the tread, the tire being rotated while being supported by a tire support device. An automatic tread wrapping device equipped with a tread winding thickness sensor movable in the width direction of the tire is reciprocated, and the band-shaped tread supplied from the extruder is connected between the tread and the sensor by the tread winding thickness sensor. The relative position is always kept at the position set by the winding direction, and the tread thickness is detected while continuously wrapping the tire to a predetermined thickness around the outer circumferential surface of the tire, and the tread winding direction is alternated for each winding layer. An automatic tire tread rubber wrapping method characterized by wrapping tire tread rubber in different ways. 2. A device that continuously wraps a band-shaped rubber material to a predetermined thickness around the outer peripheral surface of a rotating tire supported by a tire support device, and on the side of the tire support device that rotationally supports the tire. A toread automatic wrapping device is provided that can freely approach and move away from the tire, and can freely reciprocate in the width direction of the tire.
This automatic tire tread rubber wrapping device is equipped with a tread wrapping thickness sensor that can be moved forward and backward and left and right to detect the thickness of the tread that is continuously wrapped around the outer circumferential surface of the tire. Wrapping device.