JPS58148139A - Feeder for sheet-shaped material - Google Patents

Abstract

PURPOSE:To make it possible to always feed sheet-shaped material at a fixed tension by pressing the material mounted around a winding frame on the outer surface of a rotor with a braking member provided on a flange of the rotor and a pressing member of the rotor opposite thereto. CONSTITUTION:In a feeder for sheet-shaped material designed to pull out a sheet-shaped material 5 wound spirally about the rotating shaft at a fixed tension or wind it off at a fixed tension, braking members 8-14 movable in parallel with the rotating shaft are provided piercing a flange 2a of a rotor 2 in a manner asymmetrical to the radial direction and the circumferential direction of the flange 2a thereof 2 turning on the rotating shaft. A winding frame 6 on which material 5 is wound is mounted on the outer surface of the rotor 2 while a pressing member 3 for pressing the braking members through one end face of the material 5 wound on the winding frame 6 is so arranged to press the other end face of the material 5 with an elastic body 4 spreading over one end of the member 3 and one end of the rotor 2. As a result, the material 5 can be supplied at a fixed tension with a small apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the drawing of sheet-like materials such as Gio tape,
The present invention relates to a sheet material feeding device in which winding is performed by a device, and in particular, the sheet material is drawn out under a constant tension, the sheet material is first wound, and the sheet material is easily attached and replaced.

The conventional sheet-like material supplying device of this type primarily supplies MlI.
The second method is to detect the radial displacement of the supplied material and adjust the braking force.The third method is to bring a roller, etc. into contact with the supplied material and use the force received from the roller on the supply side. The braking force can be roughly divided into different methods. In the first of these methods, it is impossible to maintain a constant tension against radial changes in the feed material.

tx The second method often has the disadvantage that the mating device, which requires a device for detecting displacement in the radial direction, is relatively large. Historically, the third method has had the disadvantage that the equipment becomes large and expensive due to the attachment of rollers, etc., and the storage of the supply material is troublesome to replace.

On the other hand, the technique of insulation desolation in insulating conductors for electrical equipment is
When the supply device becomes large in pinging, the shape of the conductor causes interference between the supply device and the conductor, making taping impossible. In order to solve the above drawbacks, the size of the feeding device must be made as small as the size of the material to be fed, and it must also be able to maintain constant tension against changes in the radial direction of the material. , the attachment of the feed material requires a feed device that allows for easy replacement.

The purpose of the present invention is to provide a material that can be supplied with a constant tension without requiring a detection device such as the diameter or tension of the material when the sheet-like material is drawn out from a spiral shape or wound into a spiral shape. It is an object of the present invention to provide a sheet-like material supply device that is miniaturized.

The feature of the present invention is that the flange of the rotor rotating around the rotation lIl is asymmetrically penetrated in the radial direction and the circumferential direction.
A braking member movable parallel to the rotating shaft is provided, and a winding frame wound with a 7-t-shaped material is installed on the outer circumferential surface of the #-marked rotor, and the braking member is wound around a bearing member of the rotor. The next pressing member which is rotated and pressed through one end face of the sheet-like material is stretched between one end of the pressing member and one end of the rotor with an elastic body, and presses the other end face of the sheet-like material. Mark the point where m is completed.

Hereinafter, embodiments of the present invention will be described based on the drawings. W.I.
FIG. 1 shows the structure of a main part of an embodiment of a sheet-like material supply device according to the present invention. In the figure, reference numeral 11 denotes a bearing that supports a rotor 2 that is rotationally driven by a drive device (not shown). Out. Brake bands 8, 9, 10.11 are attached to the flange 2a of the rotor 2 so as to be movable parallel to the rotation @.
It is installed asymmetrically in the radial and circumferential directions of the collar portion 2a by penetrating through it. A winding frame 6 on which a sheet material 5 is wound is attached to the outer peripheral surface of the primary rotor 2, and brake pads 8,9,10,11 are mounted on the bearing l of the rotor 2.
A push plate 3 for pressing the rolled sheet-like material through one end surface is stretched over one end of the rotor 2 by a spring 4.

Here, brake bands 8, 9, 10. ll'i rotor 2
The reason why the flange 2m is arranged asymmetrically in the radial and circumferential directions is that when the sheet-like material 5 is drawn or wound, the distance between it and the τ bearing 1 changes in the radial direction of the sheet-like material 5. This is to change the number of brake bands that generate braking force due to frictional force.

Further, a sheet material fixing bin 7 fixed to the push plate 3 is inserted into the sheet material winding frame 6 so that the rotor 2 and the sheet material 5 rotate at the same time.

The operation of pulling out the sheet-like material after it has been wound into a spiral shape will be explained below with reference to FIGS. 2 and 3.

First, Figure 2 shows the sheet material 5 and the brake pad 8°9.10.11.12.1 at the beginning of drawing out the sheet material.
3.14 is shown, and at the beginning of pulling out, the sheet material 5 presses all the brake bands against the bearing 1. A constant tension is generated in the sheet-like material 5 by balancing the diameter of the sheet-like material 5 with the torque due to the tension. Next, Fig. 3 shows the sheet-like material 5 and the brake pad 8.9°10.11.12.13.
In this state, the brake pad 10 pressed by the sheet-like material 5
. 17t1 push plate 3 is attached to rotor 2 by spring 4
The attachment of the sheet-like material 5 is facilitated by the tensioning on one end of the sheet material 5.

As explained above, the present invention requires a device that detects the amount of change in the radial direction and the tension of the sheet material when the sheet material changes in the radial direction due to drawing or winding of the sheet material. It is possible to supply a constant tension to the sheet-like material without having to do so, improve the reliability of the tension, and make it possible to reduce the size of the device body so that it approaches the size of the sheet-like material.

In addition, it has a small number of parts, is cheap and easy to manufacture, and
Since it is easy to attach and replace sheet materials, work efficiency can be improved.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the structure of a main part of an embodiment of the sheet-like material supply device according to the present invention, and Fig. 1142 is the production of the starting material for the sheet-like material supply device shown in Fig. 1. ′
The third figure is an explanatory view showing the operating state during the drawing of the sheet-like material. l...S hall, 2...roller, 3...push plate, 4...
... Spring, 5... Sheet material, 6... Winding frame, 7.
・Sheet material aiming fixing pin, 8, 9, 10. 11, 12
．． 13゜Figure 1

Claims (1)

[Claims] 1. In a sheet material supply device that draws out a sheet material wound in a spiral shape around a rotating shaft with a constant tension or winds it in a spiral shape with a constant tension, the flange of the rotor rotates around the entire center of the rotating shaft. The flange is asymmetrically radially and circumferentially parallel to the rotating axis.
b. A possible braking member is provided, and a winding frame around which a sheet-like material is wound is attached to the outer peripheral surface of the rotor, and the braking member is attached to one end surface of the sheet-like material wound around a bearing member of the rotor. A pressing member for pressing with t ji L is configured such that one end of the pressing member and the 11th period rotor are stretched with an elastic body so as to suppress the other surface of the 7-t-shaped material. A sheet-like material feeding device that takes % image.