JPH0480161A - Film cutting device and film processing machine - Google Patents

Abstract

PURPOSE:To reduce a cutting loss by changing a first cutter for cutting a film into two parts of a shape to be stopped at a spool, and a second cutter to cut the film into two tongue ends between each other alternately. CONSTITUTION:A non-reacted film F1 to be transferred is transferred on a transfer passage 6, and inserted into a cutting part 5 of a cutting device to be stopped at a predetermined position. The cutting part 5 has a first cutter 5a over the transfer passage 6 for the film F1, and a second cutter 5b outside the transfer passage. The first cutter 5a cuts the film F1 into two parts of a shape to be stopped at a spool, that is two protruding parts F1a. When the preceding film F1 is transferred to reach a predetermined position, the transfer is stopped, and the second cutter 5b is disposed over the transfer passage 6 instead of the first cutter 5a. A tongue-end part F1b of the preceding film F1 and a tongue-end part F2b of a subsequent film F2 are then cut simultaneously in such shapes as to cover each other's residual part of cutting. Almost no residual parts are therefore produced.

Description

Detailed Description of the Invention [Field of Industrial Application] This invention relates to a film cutting device that cuts unexposed photographic film into a predetermined length, and a film processing machine that cuts unexposed film and stores it in a cartridge. .

[Prior Art] Conventionally, a long length of unexposed film is cut by a cutting device, the cut unexposed film is guided to a spool turret, inserted into a spool slit and locked, and then the spool is rotated to cut the film. I took one, created a scroll of film, and stored it in a patrone.

By the way, one end of the photo camera film is cut into a convex shape so that it can be inserted and locked into the slit of this spool, and the other end is cut into a tongue shape so that it can be engaged with the camera sprocket. It is.

For this reason, cutters, which are conventional film cutting devices,
The teeth were designed to simultaneously create this convex shape and the edge-of-the-tongue shape.

The cutting shape of this conventional film cutting device is 1J5.
This will be explained based on the diagram. In Figure N5, an unexposed long film 31 is cut into a predetermined length and shape by a cutter 32. The shape of the teeth of this cutter 32 was such that the front part cut into a tongue-like shape and the rear part cut into a convex shape with respect to the transport direction A of the film. For this reason, the cut film was always conveyed with the convex portion 33 as the tip and the tongue end portion 34 as the rear wheel, so that the film could be inserted and locked onto the spool without changing the conveyance direction. .

[Problem to be solved by the invention] However, in this conventional film cutting device, the fifth
As shown in the figure, since both the tongue end portion 34 and the convex portion 33 include the center portion of the film width B, a tooth configuration is adopted in which these portions are wrapped and cut. Therefore, a large amount of the portion 35 was discarded after cutting the film.

By the way, the cost required for this film as a material accounts for a very high proportion of the total cost required for the photographic film as a final product, so if there is a large portion 35 of this film to be discarded, the cost of the photographic film will be reduced. This led to an increase in production costs.

The present invention solves the above-mentioned drawbacks, and an object of the present invention is to provide a film cutting device that can reduce cutting loss as much as possible when cutting an unexposed film.

Further, the invention according to claim 2 is provided with the film cutting device according to claim 1 to reduce cutting loss of unexposed film, and to lock the unexposed film cut by the film cutting device to a spool in a container. The purpose is to provide a film processing machine that can.

[Means for Solving the Problems] In order to solve the above FJ problem, the invention according to claim 1 comprises:
In a film cutting device that uses a cutter to cut a long unexposed film into a shape that locks one end on a spool and cuts the other end into a tongue shape, the unexposed film is cut into shapes that lock on the spool. The present invention is characterized in that it has a first cutter that cuts the tongue ends, a second cutter that cuts the tongue ends, and a switching means that alternately switches between the first cutter and the 's2 cutter.

Further, the invention according to claim 2 provides a film processing machine having a conveyance path for guiding the cut unexposed film to a spool turret, in which the unexposed film cut by the film cutting device according to claim 1 is removed from the spool. a first conveyance path that transports the shape to be latched to the spool in advance, and a second conveyance path that changes the direction of the unexposed film, which is conveyed first by the tongue edge shape, and conveys the shape to be latched to the spool in advance. a conveyance path;
It is characterized by having a selection means for selecting the first conveyance path and the second conveyance path.

[Function] In the film cutting device according to claim 1, the first cutter and the third
42 cutters are alternately switched to cut the long unexposed film into shapes that are locked to the spool and into tongue-like shapes, thereby reducing cutting loss when cutting the long unexposed film.

Further, in the film processing machine according to claim 2, the unexposed film cut by the cutting device according to claim 1 is transferred to the first conveyance path in which the shape to be retained on the spool is conveyed in advance by the conveyance path selection means. It is selected whether to carry it out or to carry it out to the second conveyance path where the tongue tip is conveyed first. The unexposed film conveyed in the first conveyance path is conveyed to the spool turret with the shape to be locked on the spool preceded. Further, in the second conveyance path where the tongue end is conveyed first, the conveyance direction of the cut unexposed film is changed, and then the shape to be retained on the spool is conveyed first to the spool turret.

[Example] Next, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a schematic diagram of a film processing machine including a film cutting device, and FIGS. 2 to 4 are diagrams showing the operation of the film cutting device.

In FIG. 1, an unexposed long film F, which is not shown, is taken out from a magazine and is carried into a fixed length sprocket 3 constituting a fixed length section 2 while being regulated by a guide roller 1. This fixed length sprocket 3 performs a predetermined rotation according to the film size and supplies the film F to the feed roller 4.

This feed roller 4 inserts the film F sent from the fixed length sprocket 3 into the cutting section 5 of the film cutting device and stops it at a predetermined position.

As shown in FIG. 2, in this cutting section 5, a first cutter 5a is arranged on the transport path 6 of the film F1, and a second cutter 5b is arranged outside the transport path. The first cutter 5a is designed to cut the unexposed film into shapes that are retained on the spool, and the second cutter is designed to cut the unexposed film into tongue-like shapes.

Therefore, the film Fl is cut into convex shaped portions Fla by the operation of the first cutter 5a, and as shown in FIG.
The preceding film F1 whose leading end portion has been cut is supplied to a switching gate 7 disposed subsequent to the cutting section 5 by rotation of the feed roller 4.

The switching gate 7 switches the film transport path according to the cut shape of the leading end of the film F1. When the leading film F1 whose tip end has been cut into a convex shaped part Fla is carried into this switching gate 7, this switching gate 7 is connected to the first film F1 which is on a straight line extending from the conveying surface at the time of carrying in the leading film F1. It is carried out to the conveyance path 8.

A pull-out roller 9 is disposed in the first conveyance path 8 to pull out and convey the leading film F1 that has passed through the switching gate 7, and guides the cut leading film F1 through the guide rail 10 to the forward insertion roller 11. . The preceding film F1 carried into the insertion roller 11 is inserted into an insertion guide 12 disposed subsequently, and carried out to the first spool turret 14 that supplies the spool 13 while being held by the insertion guide 12. Ru.

In this first spool turret 14, the direction of the spool 13 supplied from the spool supply rail chute 50 is adjusted, and the leading end of the preceding film F1 carried in from the insertion guide 12 is opened on the winding axis of this spool 13. It is inserted and locked into the slit 13a. When the sensor 15 detects that the leading end of the leading film F1 is locked, the insertion roller 11 and the insertion guide 12 start retracting, and the spool 13 is moved to a predetermined rotational position without interference with the leading film F1. make it possible to

On the other hand, the fixed length sprocket 3 and the feed roller 4, which have sent out the preceding film F1 whose tip end has been cut into the convex shaped part Fla, place the preceding film F1 at a predetermined cutting position.
As shown in FIG. 3, the first cutter 5a of the cutting section 5 is retracted out of the conveyance path 6 under the control of the cutter movement control device 5c, and the second cutter 5b is moved out of the conveyance path 6. position it above. Due to the operation of this second cutter 5b -
Then, the tongue end portion Fib of the leading film F1 and the tongue end portion F2b of the trailing film F2 are cut and formed.

Since the mutual tongue end portions Fib and F2b are cut in such a manner that they compensate for each other's cut remaining portions, almost no uncut portions are discarded.

In this way, the leading film F1 whose rear end has been cut by the tongue-like portion Fib is fed out to the guide rail 10 side by the rotation of the pull-out roller 9 again, and the leading end is attached to the spool 13. It becomes free when inserted and locked in the slit 13a. In this state, the first spool turret 14 is rotated, the spool 13 is moved to a predetermined position, and the preceding film F1 is wound up.

The spool 13 that has finished winding the preceding film F1 is then inspected for film winding, etc., and then sent to a transfer turret and a cartridge turret (not shown) and recovered.

Next, after the leading film F1 passes through the switching gate 7, the trailing film F2 whose tip end is cut into a tongue-like part F2b passes through the switching gate 7 by rotating the regular sprocket 3 and the feed roller 4 again. Supplied. When the trailing film F2 whose tip end is cut by the tongue-shaped portion F2b is carried into this switching gate 7, the switching gate 7 is placed at a predetermined angle with respect to the conveying surface when the trailing film F2 is carried in. It is carried out to the intersecting second conveyance path 16.

In this second conveyance path 16, a pull-out roller 17 pulls out and conveys the trailing film F2 that has passed through the switching gate 7.
is provided, and the cut trailing film F2 is inserted into the guide rail 18. Thereafter, the following film F2 is sent to a predetermined position by the rotation of the fixed-length sprocket 3, the feed roller 4, and the pull-out roller 17, and this time, as shown in the fourth section, the trailing film F2 is cut into a convex shape by the first cutter 5a. Cut into part F2a. Then pull out roller 1 again
7, pull out the rear end of the trailing film F2 from the switching gate 7, and attach the trailing film F2 to the guide rail 18.
When most of the trailing film F2 is carried in and the tongue end F2b, which is the leading end of the trailing film F2, is detected by the sensor 19, the pull-out roller 17 is stops rotation and film transport. Next, under the control of this transport path rotation control device 20, the guide rail 18 and the pull-out roller 17 are rotated around the tongue end portion F2b of the trailing film F2, and this second!
12 to a position intersecting the feed path 16 at a predetermined angle. At this position, the pull-out roller 17 rotates in the opposite direction under the control of the conveyance path rotation control device 20, and guides the trailing film F2 to the insertion roller 22 and the insertion guide 23 with the convex-shaped portion F2a as the tip. The trailing film F2 carried into the insertion roller 22 is carried out to the second spool turret 24, which supplies the spool 13, while being held by the insertion guide 23. In this second spool turret 24 as well, similarly to the first spool turret 14, the leading end of the trailing film F2 is inserted into the slit 13 of the spool 13.
a, the spool 13 is moved to a predetermined position and wound, and then sent to a transfer turret and a cartridge turret (not shown) and recovered.

In this embodiment, the first spool turret 14 and the second spool turret 24 are arranged independently;
By changing the direction of the unexposed film, which is conveyed through the conveyance path 16 with the tongue end in advance, and conveying it to the first spool turret 14 with the shape that locks onto the spool in advance, the N2 spool turret 24 can be omitted.

[Effects of the Invention] As described above, the film cutting device according to claim 1 alternately switches the first cutter and the second cutter so that the shape of the long unexposed film is fixed to the spool, and the tongue Since the film is cut end-to-end, cutting loss when cutting a long unexposed film can be reduced, and film production costs can be significantly reduced.

Further, the film processing machine according to claim 2 is equipped with the film cutting device according to claim 1, so that cutting loss can be reduced and the portion of the film that has been cut into a tongue shape can be conveyed in advance. By providing a separate conveyance path and changing the conveyance direction, even a film cut by such a film cutting device can be easily secured to the spool.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a film processing machine including a film cutting device, FIGS. 2 to 4 are diagrams showing the operation of the film cutting device, and FIG. 5 is a schematic diagram of a conventional film cutting device. Symbols F, F1. F2 is a film, 3 is a fixed length sprocket, 5 is a cutting section, 5a is a first cutter, 5b is a second cutter, 5C is a cutter B movement control device, 7 is a switching gate, 8 is a first conveyance path, 9.17 10.18 is a guide rail, 1122 is an insertion roller, 12.23 is an insertion guide, 13 is a spool, 14 is a first spool turret, 16 is a second conveyance path, and 20 is a conveyance path rotation control. Device,
24 is a second spool turret.

Claims (1)

[Scope of Claims] 1. In a film cutting device that uses a cutter to cut a long unexposed film into a shape that locks one end on a spool and cuts the other end into a tongue-like shape, the unexposed film is A film characterized in that it has a first cutter that cuts the tongue-like shapes, a second cutter that cuts the tongue-like shapes, and a switching means that alternately switches between the first cutter and the second cutter. Cutting device. 2. In a film processing machine having a conveyance path for guiding the cut unexposed film to a spool turret, a shape of the unexposed film cut by the film cutting device according to claim 1 to be latched to the spool is first formed. a first conveyance path in which the unexposed film is conveyed in advance with the tongue edge shape, and a second conveyance path in which the unexposed film is conveyed in advance with the tongue end shape in which the unexposed film is conveyed in a shape that changes the direction and is latched to the spool; A film processing machine comprising a selection means for selecting a transport path and a second transport path.