JPH0148545B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film cut end holding device when winding up a flexible strip such as film or paper (hereinafter simply referred to as "film"). In particular, the present invention is applicable to a film winding device configured to cut the film being wound and simultaneously release the drive of the winding reel in a camera processor for microfilm, etc. The present invention relates to a film cut end holding device during winding, in which the film is held close to a cut position without being wound up on a take-up reel.

2. Description of the Related Art Conventionally, for example, in a camera processor for producing microfilm, a camera processor is known in which a photographing section and a developing section are combined to perform photographing and developing in an integrated manner. In this case, since the traveling speed of the film in the photographing section and the traveling speed of the film in the developing section are different, various methods have been adopted and proposed to maintain a balance between the two.

As one of these methods, one of the applicants proposed a method in which the photographed film is wound onto a take-up reel, and then the wound film is sent to a developing section connected to the photographing section. proposed (for example, Japanese Patent Application No. 1983-206090). In other words, this method uses two take-up reels, and the take-up reels are alternately moved back and forth between the photographing section and the developing section by appropriate means, and the photographed material is transferred from one take-up reel to the developing section. By winding the photographed film onto the other take-up reel while the film is being fed, photographing and development can be performed simultaneously.

By the way, in this method, the photographed film is wound onto a take-up reel, and when the wound film reaches a predetermined amount, the film is cut with a cutter, and at the same time the rotation of the take-up reel is stopped. However, at this time, due to the inertia of the take-up reel, the cut end of the film is caught up in the take-up reel. In other words, in such a system, when the film wound on the take-up reel is transferred to the developing section, rewound and sent to the developing section, the end of the film is Once wound up on the reel, a special device is required to unwind the leading edge of the film, especially if such operations need to be performed automatically in the dark. This is because more complicated means are required. Therefore, after cutting the film, it is desired that the cut end of the film be at or near the cut position without being wound up on the take-up reel.

As a result of various studies, the present inventor has discovered that by adopting a simple device, the cut end of the film can be positioned at or near the cut position without being caught in the take-up reel after cutting the film. The present invention was successfully achieved.

That is, the present invention comprises a film take-up reel and a cutter driven by a driving means, and is configured such that the drive of the take-up reel is released when the film being wound is cut. In the film winding device, a pair of film feed rollers is provided between the take-up reel and the cutter, and the take-up reel and one roller of the pair of film feed rollers are frictionally transmitted by an elastic belt. , when the drive of the take-up reel is released with the operation of the cutter, the recovery of the elongated displacement of the elastic belt gives reverse rotation to the take-up reel, and the cut end of the film is removed from the take-up reel. This is a film cut end holding device during film winding, characterized in that it prevents the film from being caught in the film.

The present invention will be described below with reference to the drawings.

In the following explanation, for convenience, a case will be described using as an example a case in which a photographed micro photographic film is wound in the camera processor. Of course, the present invention can also be applied to other films.

FIG. 1 is an explanatory diagram showing one embodiment of the apparatus of the present invention. In the figure, reference numeral 1 denotes a film winding reel that is frictionally driven by a suitable transmission means such as a drive belt 2, and is composed of a pair of film drive rollers 3, a contact roller _4A , and a drive roller _4B . A film 5 sent through a pair of film feed rollers 4 is wound up.
A pulley connected to the shaft of the drive roller _4B and a pulley 9 connected to the shaft of the take-up reel 1 are friction-transmitted by a stretchable elastic belt 8 such as a coil spring or a rubber belt. As the reel 1 rotates, the feed roller 4 is rotated. In this case, the diameter of the pulley of the drive roller 4 _B is made smaller than the pulley 9 of the take-up reel 1, and the rotation speed υ ₁ of the drive roller 3 and the rotation speed υ ₂ of the take-up reel 1 are set such that υ ₁ < It is set so that υ ₂ . Therefore, the driving roller 4 _B is the elastic belt 8
The film 5 is fed to the take-up reel 1 while slipping. Therefore, the film 5 is always maintained in a tense state. Film drive roller 3
A cutter 6 is provided between the feed roller 4 and the feed roller 4. Reference numeral 7 denotes a guide provided on the downstream side of the cutter 6, which serves to feed the film 5 to the feed roller 4, and to hold the end of the film 5 at the position of the cutter 6 and move it to another position when the film 5 is cut. It has the function of a guide.

Note that 10 comes into contact with the drive belt 2 when the drive belt 2 is released from the take-up reel 1 as described later (the position indicated by the dotted line in FIG. 1), and as the cantering belt 2 rotates, It is a disc that rotates around a shaft 11 to which a take-up reel 1 is fixed. Further, by utilizing the rotation of the disc 10, the take-up reel 1 is moved to another position, that is, to the film delivery side, via a shaft 12 attached at right angles to the shaft 11.

In this apparatus, the cutter 6 and the drive belt 2 are operated simultaneously, and when the cutter 6 cuts the film 5, the drive of the drive belt 2 to the take-up reel 1 is released. Thereafter, the disk 10 is rotated by the cantering belt 2, and when the take-up reel 1 moves to a predetermined position on the film feeding side, a stopper 15 is provided on the edge of the disk 10, which is activated by a solenoid 14. It is configured to be stopped by engaging with a notch or the like (not shown) provided in the drawing.

Next, the operation of this device configured as above will be explained.

The take-up reel 1 is rotated to take up the film 5, and when a known detection means detects that a predetermined amount of the film 5 has been taken up, the drive roller 3 stops, and therefore the film 5 stops running. do. However, power is still transmitted to the drive belt 2,
Therefore, since the take-up reel 1 is rotated by friction, the film 5 is under tension. In this state, when the cutter 6 is operated to cut the film 5 and the drive belt 2 is separated from the take-up reel 1, the take-up reel 1 becomes free.

As mentioned above, this device is configured so that the cutter 6 and the drive belt 2 operate simultaneously,
Since the drive belt 2 is released at the start of cutting, the elastic belt 8 is rotated in the opposite direction by the elongated displacement during cutting. In this way, the elastic belt 8 recovers from the elongated displacement, and its recovery force causes the take-up reel 1 to
is rotated in the opposite direction, so that the cut end of the film 5 is returned to the cutting position or near the cutting position.

Therefore, the cut end of the film 5 is the winding reel 1.
It is held in the cut position without being wound up. If the film 5 is sent to the next process such as a developing section while maintaining this state, the film 5 can be easily rewound using a simple mechanism.

Although the present invention has been explained above using the operation of microfilm in a camera processor as an example, the present invention is not limited thereto, and can be applied to all other systems that require winding and cutting of film. can do.

Note that it is also possible to use a method in which the cutter and the drive belt are not operated at the same time; in this case, it is preferable to give priority to releasing the drive belt and then operate the cutter.

As described above, the present invention utilizes the slip and elastic force of the elastic belt to prevent the cut end of the film from being rolled up. Therefore, when sending the wound film to the next process, special The desired purpose can be achieved without the need for extensive tip delivery equipment.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. In the figure, 1...take-up reel, 2...drive belt,
3... Film drive roller, 4 _A , 4 _B ... Film feed roller, 5... Film, 6... Cutter, 8...
elastic belt.

Claims (1)

[Claims] 1. A film winding device comprising a film winding reel and a cutter driven by a driving means, and configured to release the drive of the winding reel when the film being wound is cut. , a pair of film feed rollers is provided between the take-up reel and the cutter, the take-up reel and one roller of the pair of film feed rollers are frictionally transmitted by an elastic belt, and the cutter is operated. At the same time, when the drive of the take-up reel is released, the recovery of the elongated displacement of the elastic belt gives reverse rotation to the take-up reel, and winds the cut end of the film onto the take-up reel. A device for holding a cut end of a film during film winding, characterized in that the device prevents the film from being cut.