JPH067920Y2 - Continuous paper cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a cutting device for continuous paper such as continuous forms in which perforations are made at regular intervals.

[Prior Art] Conventionally, this type of continuous sheet cutting device uses a pair of rollers as a feeding mechanism and a pulling mechanism, and arranges a blade as a mechanism for providing a trigger for cutting between the pair of rollers, and sends it out. It is configured such that the relative conveying speed of the side roller and the pulling side roller is set to a ratio of about 1: 2. As a cutting method, for example, as shown in FIG.
With the holes on the both edges as guides, the rollers 3
3, the distance between the rollers 4, 4'on the pulling side and the blade 5 is set to the cutting size D, and the continuous paper 1 is nipped by the pair of rollers 1 and 2, and at the moment of being pulled, the continuous paper 1 is fed to the paper conveying line. On the other hand, the perforation 6 hits the blade 5 projecting upward or downward by about 10 mm, and is cut from this, and the feeding side rollers 3, 3'and the pulling side roller 4,
4 ', at least one pair of rollers has a structure capable of contact and separation,
A method is known in which the continuous paper 1 is sandwiched at the moment when the perforation comes under the vertically moving blade 5, and the continuous paper is cut.

[Problems to be Solved by the Invention] In the prior art as shown in FIG. 3, the distance between the pulling-side rollers 4, 4'and the blade 5 is set to the cutting size D, or the blade 5 is installed at any rate. It is necessary to adjust the timing so that it coincides with the perforations 6 or acts at least in the vicinity thereof. Therefore, when performing the cutting operation, it is necessary to measure the cutting length, that is, the perforation distance in advance, and adjust the cutting device so that the blade always matches the perforation, which is troublesome.

For this reason, there has been a demand for a device that can hang continuous paper on the cutting device without any operation.

[Means for Solving the Problems] The cutting device for continuous paper of the present invention was devised to solve the above-mentioned problems of the prior art, and is a sending side for sending continuous paper that is perforated at regular intervals. In a continuous paper cutting device comprising a roller, a pulling side roller for pulling the continuous paper at a speed faster than the feeding speed, and a blade which is between the rollers and gives a trigger for cutting the continuous paper along the perforations. , The distance between the pulling side roller and the blade should be less than the minimum perforation of the continuous paper to be cut, and the above for each common maximum module (basic dimensions) of the continuous paper to be cut from when the leading edge of the continuous paper reaches the pulling roller A blade that generates tension between both rollers and triggers cutting at the same time acts on the continuous paper, and the blade presses the perforations. It is configured to cut from the perforations when a force is applied, and after that, for each tension cycle applied until the cutting with the blade first, the cutting operation of continuous paper with the blade from the next time is performed. It is configured to do.

[Operation] Since the present invention has the above-described configuration, for example, a continuous sheet having a perforation interval that is normally used, that is, a multiple of 1/2 inch or a multiple of 1/3 inch is used. In the case of cutting, tension is applied to the continuous paper 1 so that the blade comes into contact with the continuous paper every time 1/6 inch paper, which is the maximum common module (common basic size), is fed,
The blade 5, which is on the delivery roller 3, 3'side by a distance shorter than the minimum cutting length L than the pulling roll 4, 4 ', always matches the perforation 6 at any perforation spacing in any continuous paper. Or, a situation occurs in which there is contact with the vicinity.

If the perforations 6 and the blade 5 come into direct contact with each other while the tension is applied to the continuous paper 1 or in the vicinity thereof, the strength of the paper at the perforations is weak, and the continuous paper 1 is cut at the perforations 6.

Therefore, it is detected how many times the tension has been applied since the leading edge of the continuous paper arrived at the pulling side rollers 4, 4 ', and then the cutting has been performed. From the next time, the tension is applied at each cycle and the blade 5 is made to act. In this case, the blade always acts on or near the perforations and the required cutting is performed.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory side view of an embodiment of the present invention, in which a perforated continuous paper 1 is conveyed by a pin tractor 2 using the holes on both side edges as guides and fed between the rollers 3, 3 on the delivery side. The distance between the pulling side rollers 4 and 4'and the blade 5 is set to the normally used minimum cutting size L, and the continuous paper 1 as shown in FIG. 2 is sandwiched between these roller pairs 3 and 4. , At least one pair of rollers 3 and 3'on the sending side and rollers 4 and 4'on the pulling side can be brought into contact with and separated from each other, and continuous paper is formed at the moment when perforation 6 comes under blade 5 which moves up and down. 1 is sandwiched to cut continuous paper.

The movement of the blade 5 which moves up and down with respect to the sheet conveying line at the moment of pulling can be commonly used for the continuous sheet 1 having different perforation intervals 1 and m as shown in FIGS. 2 (a) and 2 (b). In order to do so, the tension is applied between the two sets of rollers each time the paper is fed by the distance corresponding to the greatest common divisor, and the blade 5 is brought into contact with the continuous paper each time.

For example, the perforation interval of the continuous paper which is normally used is a multiple of 1/2 inch or a multiple of 1/3 inch, and is the maximum common module (common basic dimension) corresponding to the greatest common divisor of the same. If tension is applied to the continuous paper 1 every time 1/6 inch paper is fed, the pulling roll 4,
The blade 5 located on the delivery side rollers 3, 3'side by the minimum cutting length L from 4'will always coincide with the perforation 6 regardless of the perforation spacing in any continuous paper.

Therefore, when the blade 5 and the perforation 6 match as described above, the cutting is performed at the perforation 6, so it is detected how many times the paper has been sent, and thereafter, the continuous paper is provided for a period corresponding to that period. If the tension is applied after sending 1 and the blade acts at the same time, the blade 5 and the perforation 6 are always aligned with each other, and the sheet cutting is surely performed.

If the distance between the blade and the pulling side roller is smaller than the minimum perforation length of the continuous paper to be cut, the perforation can be reduced by applying tension to the continuous paper to shorten the feeding cycle. Since the blade can be brought into contact with the vicinity to perform cutting along the perforations, the distance between the blade and the pulling side roller does not necessarily have to match the minimum cutting unit.

Further, as a detection mechanism for detecting that the above-described paper cutting has been performed, a light emitting element 7 and a light receiving element 8 are provided at positions facing each other with the blade and the continuous paper interposed therebetween so as to detect the time of cutting. Good. It should be noted that, instead of the optical sensor composed of the light emitting element 7 and the light receiving element 8 provided as the paper cutting detection mechanism, a pressure sensor for detecting the disappearance of the pressure between the paper and the blade due to the paper cutting, and an impact generated when the paper is cut An impact sensor or the like for sensing may be used.

[Advantage of the Invention] According to the present invention, even when continuous sheets having different perforation intervals are hung on the cutting device, it is automatically detected how long the sheet should be fed first before the tension is applied. After that, since the tension application and the blade contact may be performed based on the length, the operation can be simplified and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory side view of an embodiment of the present invention, FIG. 2 is a perspective view of continuous paper, and FIG. 3 is an explanatory side view of a conventional example. 1 ... Continuous paper, 2 ... Pin tractor, 3, 3 '... Delivery side roller, 4, 4' ... Tension side roller, 5 ... Blade, 6 ... Perforation, 7 ... Light emitting element, 8 …… Light receiving element, L …… Minimum cutting dimension, l, m …… Perforation spacing.

Claims (2)

[Scope of utility model registration request] 1. A delivery-side roller that feeds out perforated continuous paper at regular intervals, a pull-side roller that pulls the continuous paper at a speed faster than this feed-out speed, and a continuous paper that is between these rollers. In a continuous paper cutting device consisting of a blade that gives a trigger of cutting along the perforation, the distance between the tension side roller and the blade is set to be the perforation minimum distance of the continuous paper to be cut or less, and the leading end of the continuous paper is the tension side roller. From the time when the continuous paper is reached, a blade that exerts a tensile force between the rollers for each common maximum module of the continuous paper to be cut and at the same time acts as a trigger for cutting is applied to the continuous paper, and when the blade exerts a pressing force on the perforations. It is configured to cut from the perforation, and after that, the tension added until the first cutting with the blade is performed. Every period, the cutting device of the continuous paper, characterized by being configured to perform the cutting operation of the continuous paper by the blade from the next time. 2. The blade is provided with a detection mechanism for detecting that continuous paper cutting has been performed.
(1) The continuous paper cutting device.