JPS6125520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt-shaped material cutting device that sequentially cuts a belt-shaped material provided with cutting position information such as a cutting position mark or an image into pieces.

For example, a roll of photographic paper on which image frames are printed one after another is intermittently fed and cut by reading the image frames themselves or specially applied cutting position marks as cutting position information. In this case, in order to perform high-speed cutting, it is not preferable to unwind the photographic paper in a roll directly by intermittent feeding from the point of view of inertia, so unwind it by continuous feeding, and then unwind it by continuous feeding, before intermittent feeding for cutting. It forms a loop. The substantial speed difference between intermittent feeding and continuous feeding is eliminated by controlling the speed or time of continuous feeding so that the loop amount is always within a predetermined range.

In this way, when cutting a strip material by intermittent feeding, loop formation is essential. Conventionally, devices for cutting strip materials such as rolled photographic paper have formed a loop before feeding the strip material to the cutting position for the first time; Since this requires manpower, including confirmation, it is preferable to use an apparatus in which loop formation is performed later.

SUMMARY OF THE INVENTION The present invention aims to provide a cutting device for strip-shaped material that is extremely easy to prepare for cutting. constitutes,
With the second roller being largely separated from the first roller, the strip-like material is initially fed toward the cutting position by the transport means, and when the strip-like material reaches the cutting position, the control means is actuated to move the second roller is returned to a position where it contacts the first roller, and the strip material is sandwiched and fed between the first roller and the second roller to form a loop.

Hereinafter, the present invention will be specifically explained with reference to illustrated embodiments.

FIG. 1 is a plan view illustrating a roll of photographic paper (hereinafter simply referred to as "photographic paper") 3 on which image frames 1, 1A are printed and cutting position marks 2, 2A are applied as a strip-shaped material on which cutting position information has been applied. , and the front edge (or rear edge is also possible) of image frame 1, 1A 4
can also be used as cutting position information, but in this case, special cutting position marks 2 and 2A are applied,
This is used as cutting position information.

FIG. 2 is a side view showing an example in which the belt-shaped material cutting device according to the present invention is implemented as a cutting device for the photographic paper 3 illustrated in FIG. The supply means consists of a rotating shaft 11 which is appropriately braked to prevent over-rotation, and the core 13 of the photographic paper roll 12 is loaded onto this rotating shaft 11. The transfer means includes drive rollers 18 and 19 that are driven via a timing belt 17 by a pulse motor 16 that is controlled by a controller 15 that receives a signal from a sensor 14 that detects cutting position information. It consists of a pair of presser rollers 20 and a drive roller 19, and a pair of feed rollers 21, and the feed rollers 21 are pivotally supported by a rotating lever 24 that is attracted by a magnet 23 against the bias of a spring 22. There is. The cutting means consists of a cutter 25 controlled by a controller 15. The loop forming means includes a drive roller 30 driven by a motor 26 via belts 27, 28 and a clutch 29;
A feed roller 21 paired with this drive roller 30
It consists of lamps 31, 32 and sensors 33, 34 that detect the loop amount, and a controller 35 that turns the clutch 29 on and off based on the signals from the sensors 33, 34. When the attraction of the magnet 23 is released, the rotary lever 24 is rotated to the position shown by the dotted line by the urging of the spring 22, so that the feed roller 21 forms a pair with the drive roller 30 to form a feed means. do.

Next, the operation of the embodiment apparatus configured as described above will be described. First, the photographic paper roll 12 is loaded onto the rotating shaft 11, and the leading edge of the photographic paper 3 is moved to the drive roller 19.
and the feed roller 21. At this time, the pulse motor 16 is rotating and transports the photographic paper 3 in the direction of the cutter 25, the sensor 14 reads the first cutting position mark 2A made on the photographic paper 3, and the controller 15 controls the pulse motor 16. The photographic paper 3 is sent to the cutting position and stopped. Photographic paper 3
When the lever reaches the cutting position, the controller 15 releases the attraction of the magnet 23, and the lever 24 rotates to the position shown by the dotted line. At this time, the clutch 29 is turned on and the drive roller 30 is rotating, and the photographic paper 3 is fed between the drive roller 30 and the feed roller to form a loop 4. The controller 35 controls the clutch 30 so that the tip of the loop 4 is always between the position detected by the lamp 31 and the sensor 33 and the position detected by the lamp 32 and the sensor 34.
It is adjusted by turning it ON-OFF. When the rotary lever 24 rotates and the feed roller 21 pairs with the drive roller 30 to form the feed means of the loop forming means, the cutter 25 is activated and from then on, the sensor 1
4 detects the cutting position mark 2, the controller 15 operates the pulse motor 16 by a predetermined amount to operate the stopper cutter 25 to sequentially cut the photographic paper 3 into pieces. The operation of this embodiment of the apparatus requires manual labor. After loading the photographic paper roll 12 and returning the feed roller 21 to the position shown by the solid line, the leading edge of the photographic paper 3 is placed between the drive roller 19 and the feed roller 21. This is until you insert it, and the rest is done automatically.

Since the present invention is a belt-like material cutting apparatus as described above, loop formation can be performed after an operation that requires manual labor, thereby improving work efficiency.

Further, when the strip-shaped material is first sent to the cutting position, the loop forming means is actuated to form a loop. By using a structure in which a feed roller is displaceable from the position to the second position, which serves as the feeding means of the loop forming means, it is possible to provide a device that can be used as a dual-purpose member and that can operate reliably at a low cost.

The device of the present invention can be widely used not only for cutting rolled photographic paper as shown in the above embodiments, but also as a device for cutting strip-shaped materials having a similar structure, such as strip-shaped photographic film or printed matter, and is practical. The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a plan view illustrating photographic paper as a strip-shaped material, and FIG. 2 is a side view of a main part of an embodiment of a strip-shaped material cutting apparatus according to the present invention. 1... Image frame, 2... Cutting position mark, 3...
Photographic paper, 4...loop, 11...rotation shaft, 14...
...Sensor, 15...Controller, 16...Pulse motor, 17...Timing belt, 18,1
9, 30...drive roller, 21...feed roller,
25...Katsuta.

Claims (1)

[Claims] 1. A loop forming means and a transfer means are provided between the supply means and the cutting means, and information about the cutting positions applied to the strip-shaped material is read, and the strip-shaped material is sequentially transferred to the cutting position and cut. In the apparatus for cutting a strip-shaped material, the loop forming means is arranged at a first roller rotating at a fixed position, a first position where the strip-shaped material is sandwiched between the first roller, and a second roller separated from the first roller. and a second roller that is displaced to the second position, and a control means for controlling the displacement of the second roller is provided, and with the second roller set in the second position, the strip material is transferred by the transfer. When the leading end of the strip-shaped material reaches the cutting position, the control means is actuated to move the second roller to the first position and pinch the strip-shaped material together with the first roller. 1. A cutting device for a strip-shaped material, characterized in that the material is fed by a hand to form a loop. 2. The transporting means includes a pair of rollers that are disposed in front of the cutting means and transport the strip-shaped material between them and toward the cutting position, and a drive roller that transports the strip-shaped material toward this pair of rollers. , said second
The strip-shaped material according to claim 1, characterized in that when the roller is set at the second position, it abuts against a drive roller of the transfer means, and the strip-shaped material is sandwiched between them for initial feeding. cutting equipment. 3. The control means includes a rotating lever holding a second roller, and holding the rotating lever so that the second roller is in the second position, and when the leading end of the strip-shaped material reaches the cutting position. Claim 1 or 2, comprising a magnet that turns off, and a spring that biases a rotating lever so that the second roller returns to the first position when the magnet is turned off. A device for cutting strip-shaped materials as described in Section 1.