JPH03106750A - Method and device for controlling winding of thermoplastic beltform material - Google Patents

Abstract

PURPOSE:To wind a thermoplastic beltform material with high efficiency without deformation and the damage of the beltform material by a method wherein through computation of a detecting signal for detecting the winding size of the thermoplastic beltform material and the input speed of the thermoplastic beltform material, the number of revolutions of a winding shaft is controlled. CONSTITUTION:The winding size of a thermoplastic beltform material wound around a winding shaft 1a is detected by a detecting means 8, and through computation of a winding size detecting signal therefrom and the input speed of a thermoplastic beltform material W by means of a control device, the number of revolutions of the winding shaft 1a is controlled. Meanwhile, the slacking state of the thermoplastic beltform material W is detected by a slack correction detecting means 7 to detect the slack of the thermoplastic beltform material W to correct and control the guide position of an input drive roller conveyor 5 for the thermoplasti beltform material W. This method winds the thermoplastic beltform material W around the winding shaft 1a without deformation and the damage of the beltform material. The slack of the thermoplastic beltform material W between a winding device 1 and an input device 2 is effectively prevented from occurring and high-precise winding is practicable.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method and device for controlling the winding of a thermoplastic strip material, and more specifically, to a method for controlling the winding of a thermoplastic strip material, and more specifically to a method for controlling the winding of a thermoplastic strip material, and more specifically, a method for controlling the winding of a thermoplastic strip material. This invention relates to a method and device for controlling the winding of thermoplastic strip material, which enables efficient winding without breaking the material. [Conventional technology] Conventionally, in order to improve the assembly accuracy of green tires (green tires), unvulcanized extruded strip material, which is one of the constituent materials of green tires, was processed and deformed with high precision. It is known that the material must be wound up in a winding device and fed to the assembly process.

In other words, an unvulcanized thermoplastic strip material without a reinforcing layer embedded therein is soft and easily damaged, and when it is wound up with a winding device, if it is wound up under tension, it will stretch and become thicker. There is a risk that the material may be deformed in shape or width, and may also be deformed when unwinding.Therefore, when winding with the winding shaft of the winding device, it is important to wind it loosely and without losing its shape. ．． By the way, as a conventional method for winding a strip material, there is a so-called differential rotation method in which the number of revolutions of the winding shaft is sequentially controlled while controlling the loading speed of the strip material and the winding speed by the winding shaft. A contact method is used in which a swingable detection means is brought into pressure contact with the thermoplastic strip-shaped material being wound around the coil, and the feeding speed of the thermoplastic strip-shaped material and the rotational speed of the winding shaft are controlled by changing the winding diameter. There is.

[Problem that the invention seeks to solve]

However, the conventional method described above is good for strip-shaped materials that do not stretch, but it can be used for thermoplastic strip-shaped materials extruded from the extrusion process without embedded reinforcing layers in an unvulcanized state. In this case, there is a problem that it is difficult to wrap the thermoplastic strip material with tension because it is soft and easily damaged. There were problems such as loosening due to its own weight and deforming the thermoplastic strip material.

[Purpose of the invention]

This invention was devised by focusing on such conventional problems, and it is possible to deform or damage the thermoplastic strip material when unvulcanized thermoplastic strip material is wound on a winding device. A method for controlling the winding of a thermoplastic strip-shaped material, which can be wound efficiently without any problems, and which can effectively prevent the thermoplastic strip-shaped material from loosening between a winding device and a carry-in device and can be wound with high precision. The purpose is to provide equipment. [Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a method in which the tip of the thermoplastic strip material is placed between a device for carrying the thermoplastic strip material and a winding device for wrapping the thermoplastic strip material. , we installed an elevating and lowering carry-in drive roller conveyor that guides the winding shaft.
Detect the looseness of the thermoplastic strip material on this carry-in drive roller conveyor! A slack correction detecting means for correcting and controlling the guide position of the manually driven roller conveyor is provided, a detecting means for detecting the winding diameter of the thermoplastic strip material is installed on the side of the wrapping device, and a detection signal of the detecting means is provided. The gist of the present invention is to provide a control device that calculates the speed of transport of the thermoplastic strip-shaped material and the rotation speed of the winding shaft. [Operation of the Invention] The present invention is configured as described above, and detects the winding diameter of the thermoplastic strip material to be wound around the winding shaft by a detection means, and uses this winding diameter detection signal and the transport of the thermoplastic strip material. The speed is calculated by a control device to control the rotational speed of the winding shaft, while the slack correction detection means detects the slack state of the thermoplastic strip material to detect the slack state of the thermoplastic strip material. By correcting and controlling the guide position of the carry-in drive roller conveyor, it is possible to efficiently wind up the thermoplastic strip material without deforming or damaging it. It is characterized by being able to effectively prevent loosening of the winding and winding with high precision.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings. FIG. 1 shows a schematic diagram of a winding device for a thermoplastic strip material according to the present invention, in which 1 is a winding device for winding a thermoplastic strip material W around a winding shaft 1a, and 2 is not shown in the figure. A carrying device such as a belt conveyor that carries the unvulcanized thermoplastic strip material W extruded from an extrusion process into the winding device 1 side, and on this carrying device 2, the thermoplastic strip material W is A cutting device 3 for cutting to a predetermined length and a measuring roller 4 for measuring the thermoplastic strip material W cut to a predetermined length are provided. Between the winding shaft 1a of the winding device 1 and the carrying device 2, the thermoplastic strip material W carried in is placed between the winding shaft 1a of the winding device 1 and the carrying device 2.
A carry-in drive roller conveyor 5 is arranged with a predetermined curvature to guide the winding of the paper, and the carry-in drive roller conveyor 5 is installed so as to be freely raised and lowered via a lifting means (not shown). Furthermore, a winding roller 6 that can move forward and backward for winding the front end of the thermoplastic strip material W around the winding shaft 1a is installed at the tip of the carry-in drive roller conveyor 5, and this winding roller 6 is connected to a cylinder (not shown). etc., so as to approach or move away from the winding shaft 1a.

The carry-in driving roller conveyor 5 is equipped with a slack correction detection means 7 for detecting the slack state of the thermoplastic strip material W, and detects the distance from the thermoplastic strip material W when the thermoplastic strip material W is wound. to drive the lifting means of the carry-in drive roller conveyor 5, to compensate for the thermoplastic strip material W loosening due to its own weight, and to always guide the thermoplastic strip material W at a constant position. ．． Furthermore, a detection stage 8 such as an ultrasonic sensor for detecting the winding diameter of the thermoplastic strip material W is installed on the side of the winding device 1, and this detection means is controlled by a control device (not shown). The winding shaft 1a is connected to the drive motor of the winding shaft 1a.

Next, the thermoplastic strip-shaped material W extruded from the extrusion process is supplied to the winding shaft 1a of the winding device 1 via the carrying-in device 2 and the carrying-in drive roller conveyor 5, and the carrying-in speed of the thermoplastic strip-shaped material W is A method for sequentially winding the thermoplastic strip material W while controlling the rotational speed of the winding shaft 1a will be explained. First, the tip of the thermoplastic strip-shaped material W carried in is wound around the winding shaft 1a via the carrying-in drive roller conveyor 5 and the winding roller 6, and the winding shaft la is rotated at a predetermined number of rotations and then heated. Wrap the flexible strip material W. At this time, the winding diameter of the thermoplastic strip material W is detected by the detection means 8, and this winding diameter detection signal and the thermoplastic strip material W (7) are detected.
The carry-in speed, ie, the carry-in speed of the carry-in device 2, is input to a control device (not shown) and calculated, thereby controlling the rotation speed of the drive motor that rotationally drives the winding shaft 1a.

That is, in the control device, as shown in the schematic diagram of FIG. 2, the diameter of the winding device 1 is set to D. The number of rotations is N, the loading speed of the loading device 2 and the loading drive roller conveyor 5 is V, and the diameter of the driving roller 9 of the loading device 2 is d. When the number of rotations is n, the number of rotations N of the winding device 1 can be determined by the following formula. V
=NπD=nπd ■ N On the other hand, when the thermoplastic strip material W is wound, the slack state of the thermoplastic strip material W is always detected by the slack correction detection means 7, and the detected value detected by the slack correction detection means 7 is Based on this, a lifting device (not shown) is operated to correct and control the lifting position of the carry-in drive roller conveyor 5, that is, the guide position of the thermoplastic strip material W, thereby preventing the thermoplastic strip material W from loosening and deforming due to its own weight. , never,
This allows for highly accurate winding at all times. Next, FIG. 3 shows a correction control circuit that corrects the thermoplastic strip material W so that it is always in a constant slack state.
11 is a signal inverter (inverter), 12 is a proportional integrator of the slack correction circuit, and 13 is a calculator. By multiplying the line speed by a correction amount of several percent, the correction amount is always constant, and by always correctly correcting the rotational speed of the winding device 1, highly accurate winding can be performed. It has a circuit for correction.

〔Effect of the invention〕

Since the present invention has the above-described structure, when an unvulcanized thermoplastic strip material is wound onto a winding device, it can be efficiently wound without deforming or damaging the thermoplastic strip material. This also has the effect of effectively preventing the thermoplastic strip material from loosening between the winding device and the carrying device and winding it with high precision.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a winding device for thermoplastic strip material according to the present invention, FIG. 2 is a schematic diagram of the winding device, and FIG. 3 is an explanatory diagram of a control circuit. DESCRIPTION OF SYMBOLS 1... Winding device, 1a... Winding shaft, 2... Carrying-in device, 5... Carrying-in drive roller conveyor 7... Slack correction detection means, 8... Detection means, W...・Thermoplastic strip material.

Claims (1)

[Claims] 1. The thermoplastic strip material extruded from the extrusion process is supplied to a winding shaft of a winding device via a carrying device, and the feeding speed of the thermoplastic strip material and the rotational speed of the winding shaft are controlled. In a thermoplastic strip material winding control method in which a thermoplastic strip material is sequentially wound while controlling and the conveyance speed of the thermoplastic strip material by a control device to control the number of rotations of the winding shaft, while the slack correction detection means for detecting the slackness of the thermoplastic strip material detects the slack state of the thermoplastic strip material. 1. A method for controlling the winding of a thermoplastic strip material, which comprises detecting the detection and correcting and controlling the guide position of a roller conveyor for carrying in the thermoplastic strip material. 2. A swingable carry-in drive roller conveyor that guides the tip of the thermoplastic strip material to the winding shaft is installed between the device for carrying in the thermoplastic strip material and the wrapping device for wrapping the thermoplastic strip material. The carry-in driving roller conveyor is provided with slack correction detection means for detecting the slack state of the thermoplastic strip material and correcting and controlling the guide position of the carrying-in drive roller conveyor; A detection means for detecting the winding diameter of the strip material is installed, and a control device is provided for controlling the rotation speed of the winding shaft by calculating the detection signal of the detection means and the feeding speed of the thermoplastic strip material. A winding device for thermoplastic strip material, characterized by: