JP3774254B2 - Continuous paper cutting device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a continuous paper cutting apparatus for cutting continuous paper into a desired length, and more particularly to a continuous paper cutting apparatus suitable for use with a laser irradiation device as a cutting mechanism.
[0002]
[Prior art]
Conventionally, continuous paper cutting devices have used a rotary cutter blade or a guillotine-type cutter blade when cutting each unit. However, these cutter blades cause blade spills, and the cutter blades must be replaced each time. In addition, in order to arbitrarily change the cutting size, in the case of a rotary cutter, the rotary cylinder itself must be replaced and the cutter blade must be replaced. Or, in this case, to change the cut size in the driving, the rotary cylinder and the differential mechanism and variable speed mechanism require integration complex control, apparatus is enlarged. Further, in the case of a guillotine cutter, the mechanical control unit of the cutter blade drive mechanism is still complicated. In this way, any device using a cutter blade becomes large in any case, and these conventional devices have a problem that the mechanical load is high and noise cannot be reduced. It was.
[0003]
[Problems to be solved by the invention]
Therefore, the inventor tried to adopt a laser irradiation device that does not require replacement of the cutter blade as a cutting mechanism. However, when cutting continuous paper, processing while transferring the continuous paper may cause distortion of the paper. Since it causes slack, it is extremely difficult to irradiate the laser at the exact position of the paper to be cut. The present invention provides a continuous paper cutting apparatus that employs a laser irradiation device as a cutting mechanism and can irradiate a laser to an accurate position of the paper to be cut while transferring the continuous paper, thereby speeding up the processing. It is intended to do.
[0004]
[Means for Solving the Problems]
In order to solve the above-described object, the continuous paper cutting apparatus of the present invention includes:
Continuous paper supply means for transferring continuous paper; and laser light irradiation means for cutting the continuous paper into a desired size by irradiating laser light in the width direction of the continuous paper transferred by the continuous paper supply means. In the continuous paper cutting device,
The continuous paper supplying means along the transfer direction of the continuous paper, and a pair of feed rollers, driven at a higher speed than fed-feed roller, nipping the continuous paper when the continuous paper cutting, driving torque, the A pair of high-speed rollers set smaller than the feed roller so as not to tear the continuous paper only by the tension applied to the continuous paper due to the speed difference with the feed roller ;
The laser light irradiation means has an optical means for irradiating a continuous paper with a laser light between a feeding roller and a high speed roller,
Control means for irradiating the continuous paper with laser light from the laser light irradiating means in a state where a predetermined tension is applied to the continuous paper when the continuous paper is sandwiched by the high speed roller.
[0005]
[Action]
Fast roller nip the continuous paper to the verge to irradiate the laser beam, the cutting operation while applying a tension to the continuous paper by the speed difference between the feed roller and the high speed roller takes place resulting Runode, distortion or slackness of the paper Can be cut accurately.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on preferred embodiments. 1 is an overall explanatory view of the continuous paper cutting apparatus of the present invention, and FIG. 2 is an enlarged perspective explanatory view of a laser irradiation portion in the continuous paper cutting apparatus shown in FIG. These are cutting process flow explanatory drawings of the continuous paper cutting apparatus of FIG.
[0007]
In the cutting apparatus 1 of the continuous paper in FIG. 1, successive continuous paper P having a feed on both sides holes are pulled out from the roll 2, is set to the pin tractor 3 to be engaged with the feed holes of the marginal portion of the continuous paper P The paper P is supplied to the cutting unit. When the marginal part is not required for the continuous paper P that has passed through the pin tractor 3, the marginal part is slit by the marginal slitter 4 provided at the rear end of the pin tractor 3, and the continuous paper P is cut.
[0008]
The continuous paper P cutting apparatus 1 basically includes a laser light irradiation device 20 and a continuous paper supply device 10, and irradiates laser light in the width direction of the paper while transporting the continuous paper P. The continuous sheet P cutting apparatus for cutting the continuous sheet P to a desired size . Continuous paper feeding device 10, along the transfer direction of the continuous paper P, a pair of feed rollers 5a, and 5b, the feed roller 5a, faster than 5b, a pair of high speed for pinching the continuous paper P during the cutting Rollers 6a and 6b are arranged . The laser beam irradiation device 20 includes a total reflection mirror 23 that irradiates a cutting point S of the continuous paper P provided between the feeding rollers 5a and 5b and the high speed rollers 6a and 6b with a laser beam, and a concave cylindrical lens. 24 has an optical device comprising a convex cylindrical lens 25. after the predetermined tension is applied to the continuous paper P with high speed roller 6a for cutting the continuous paper P, 6b to sandwich the continuous paper P, Under the control of the control unit 11, the laser controller 21 and the laser transmitter 22 are driven to emit laser light.
[0009]
On the other hand, the belts 16 and 14 are stretched so that the continuous paper P can pass smoothly while the continuous paper P passes from the pin tractor 3 through the feed rollers 5a and 5b and the high speed rollers 6a and 6b . 2). In addition, below the cutting point S of the continuous paper P, a metal cradle 26 for receiving laser light is provided. In addition , a stacker device 13 for stacking cut sheets is provided, and the stacker device 13 is lowered according to the amount of stacked sheets. The high-speed rollers 6a and 6b are configured to be moved toward and away from each other, and configured to be able to change the holding timing of the supplied paper by the control of the control unit 11 according to the cutting size of the paper. Yes.
[0010]
Further, the driving for transferring the continuous paper is linked to the roll 2, the pin tractor 3, the feeding rollers 5a and 5b, and the high-speed rollers 6a and 6b from the driving unit 8 provided with the main motor. The high-speed rollers 6a and 6b are set to transfer the paper at a speed about 1.2 to 1.5 times faster than the feeding rollers 5a and 5b. The driving torque of the high-speed rollers 6a and 6b is feeding roller 5a, it is set much smaller than 5b, feeding rollers 5a, 5b and fast roller 6a, so as not to tear the continuous paper only by tension applied to the more continuous paper in the paper transport speed difference 6b Is set to Further, the cutting size of the continuous paper or a storage unit 12 for storing information of the drive control and the like by the cutting size, or type a disconnection control data of cutting apparatus 1 of the continuous paper, an operation for operating the cutting process A unit 15 and a display unit 9 for displaying a cutting size and a driving state are provided . In addition, an encoder 7 that feeds back the rotation amount of the pin tractor 3 to detect the paper feed amount and a paper leading edge detection device 17 for performing initial setting of paper cutting timing are provided .
[0011]
The control unit 11 controls the drive unit 8 and the drive of the laser controller 21 to control the laser beam irradiation timing based on the signal of the encoder 7 for the transfer amount of the continuous paper P.
[0012]
Next, the cutting processing operation will be described based on the flow of FIG. The driving unit 8 drives the roll 2, the pin tractor 3, and the feed rollers 5 a and 5 b to start the sheet transfer (step 101). When the leading edge of the sheet reaches the sheet leading edge detection device 17, a leading edge detection signal is generated. (Step 102), the paper feed amount from the paper leading edge detection device 17 to the cutting point S is counted (Step 103). Then, the sheet feed amount of the cutting size −α is counted from the cutting point S (step 104). As a result, the high-speed roller pinches the paper before reaching the cutting size (step 105) to apply tension to the paper to absorb the distortion and meandering of the paper. Then, when the paper feed amount of the cutting size is counted substantially from the cutting point S, the laser beam is irradiated (step 106). If the cutting is repeated (step 107) , the process returns to step 104 and the same processing is performed.
[0013]
【The invention's effect】
As described above, in the continuous paper cutting apparatus of the present invention, the high speed roller sandwiches the continuous paper immediately before the laser beam is irradiated, and tension is applied to the continuous paper due to the difference in paper transfer speed between the feed roller and the high speed roller. It is cutting operation while applying the done because, with enabling accurate cutting processing without causing a distortion or slackness of the paper, the effect due to the high speed roller sandwiching the sheet distortion and slack and meandering of the paper In addition to the tension on the paper for absorption, it works to quickly discharge the paper cut by the laser light irradiation to the subsequent stacker device, and has excellent effects such as efficient cutting processing. .
[Brief description of the drawings]
FIG. 1 is an overall explanatory view schematically showing an embodiment of a continuous sheet cutting apparatus according to the present invention.
FIG. 2 is an enlarged perspective explanatory view of a laser irradiation portion in FIG. 1;
FIG. 3 is an explanatory diagram of a cutting process flow of the continuous sheet cutting apparatus according to the present invention.
[Explanation of symbols]
1 ... Continuous paper cutting device
5a, 5b ... Feed roller
6a, 6b ... high speed roller 10 ... continuous paper supply device 11 ... control unit 20 ... laser light irradiation device 22 ... laser transmitter S ... cutting point P ... continuous paper

Claims (1)

Continuous paper supply means for transferring continuous paper; and laser light irradiation means for cutting the continuous paper into a desired size by irradiating laser light in the width direction of the continuous paper transferred by the continuous paper supply means. In the continuous paper cutting device,
The continuous paper supplying means along the transfer direction of the continuous paper, and a pair of feed rollers, driven at a higher speed than fed-feed roller, nipping the continuous paper when the continuous paper cutting, driving torque, the A pair of high-speed rollers set smaller than the feed roller so as not to tear the continuous paper only by the tension applied to the continuous paper due to the speed difference with the feed roller ;
The laser light irradiation means has an optical means for irradiating a continuous paper with a laser light between a feeding roller and a high speed roller,
The continuous paper is characterized by having control means for irradiating the continuous paper with laser light from the laser light irradiating means in a state where a predetermined tension is applied to the continuous paper when the continuous paper is sandwiched by the high speed roller. Paper cutting device.

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