JPH07101276B2 - Band winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for winding a strip-shaped body such as a film around a winding shaft such as a reel.

(Prior Art and Problems) In this type of device, for example, by winding the microfilm wound on one reel on another reel (winding device), the frame between the two reels is moved. It is used to select a desired frame.

As a conventional winding device, a plurality of immovable pulleys having an axis parallel to the axis of the winding shaft and one movable pulley are arranged around the winding shaft, and a winding belt is hung on these pulleys. By urging the movable pulley in the direction of the take-up opening, the winding angle of the belt with respect to the take-up shaft is increased to facilitate the winding of a belt-shaped body such as a film and increase the winding amount. The present applicant has proposed a device that can be adapted to Japanese Patent Application No. 62-18540 and Japanese Patent Application No. 62-18541.
In the issue.

However, in the device according to the above-mentioned application, the movable pulley cannot sufficiently come close to the winding shaft because of its curvature, that is, the winding angle of the belt with respect to the winding shaft can be sufficiently large. However, there was a problem that the winding of the strip was uncertain because it was not possible.

(Means and Actions for Solving Problems) The present invention solves the problems of the above-described conventional device, and enables winding regardless of the film width without lowering the winding performance. For the purpose of providing a take-up device,
In order to achieve the object, in a device for winding a band on a winding shaft, an immovable pulley arranged in an immovable position, a movable pulley having an axis parallel to the winding shaft and having a movable position, It has a stationary pulley, a movable pulley, and a belt that hangs around the take-up shaft, and a pawl that is movable with the movable pulley and points in the direction of the take-up opening. The movable pulley is urged in the increasing direction.

(Examples) Examples of the present invention will be described below with reference to the attached drawings.

In FIG. 1, reference numeral 20 denotes a take-up shaft, and immobile pulleys 21 and 22 whose center position is immovable are arranged at both lower positions of the take-up shaft 20.

A rotary shaft 29 provided in the vicinity of the winding shaft 20 is provided with a rotary arm 23 of a substantially triangular plate rotatably, and movable pulleys 24, 25 are provided at the corners of the rotary arm 23. Is installed.

The winding shaft 20, immovable pulleys 21, 22 and movable pulleys 24, 25
A belt 26 is stretched over the belt as shown.

The rotating arm 23 is biased by a spring or the like (not shown) in the direction of arrow P, that is, in the direction in which the winding angle α of the belt 26 around the winding shaft 20 increases.

Further, a claw body 31 that rotates together with the rotating arm 23 is attached to the rotating arm 23 at a position displaced in the plane of the drawing, and the tip 32 of the claw body 31 extends in the direction of the winding port for the film F or the like. Is oriented.

In the apparatus of this embodiment having such a structure, the film F is guided by the belt 26 from the immovable pulley 21 side, is sandwiched between the film F and the winding shaft 20, and is wound up. At that time, at the start of winding, the winding angle α is sufficiently secured, the film is wound around one round, and when entering the second round, the tip of the film is inwardly moved by the tip 32 of the claw 31. As the film is guided, the film is taken up by the take-up shaft 20 and enters the second lap without the tip of the film jumping out.

As the film winding progresses and the winding diameter increases, the rotating arm rotates to the right against the force of a spring (not shown) as shown by the chain double-dashed line in the figure, and the belt has the above diameter. Follow big film.

Next, FIG. 2 shows another embodiment as a modification of the urging type of the movable pulley. In Figure 1,
The movable pulley could be moved in an arc shape by the rotation of the arm to which it is attached, but in FIG. 2, the movable pulley 24A is linearly movable in the direction of arrow Q, It is urged by a spring or the like in the winding port direction. Here, the claw body 31A is the movable pulley 2
It is mounted so that it can move in the direction of arrow Q together with 4A.

(Effects of the Invention) As described above, the present invention is a device for winding a belt-shaped body by means of a belt. Since the movable pulley is urged in the direction of increasing the winding angle at the time, the winding angle can be secured sufficiently large at the start of winding the film and the second winding of the film can be performed. At the time of attaching, since the tip of the film is guided in the winding direction by the claw body, the band-shaped body such as the film is surely wound up. As a result, since the winding shaft does not limit the width of the strip, it is possible to wind a strip having any width within the range of the axial length of the winding shaft, which improves the adaptability of the device. Bring

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of an apparatus according to an embodiment of the present invention, and FIG. 2 is a front view showing a schematic configuration of another embodiment of the present invention. 20 …… Winding shaft 21,22 …… Fixed pulley 24; 24A …… Movable pulley 26 …… Belt 31 …… Claw body α …… Wrapping angle

Claims (1)

[Claims] 1. A device for winding a strip on a winding shaft, wherein a stationary pulley disposed in a stationary position, a movable pulley having a shaft parallel to the winding shaft and having a movable position, the stationary pulley, A direction that increases the winding angle of the belt on the take-up shaft, which has a movable pulley and a belt that is wound around the take-up shaft, and a pawl that is movable together with the moveable pulley and that is oriented toward the take-up opening. The belt winding device, wherein the movable pulley is biased.