JPH02205496A - Continuous paper cutting device - Google Patents

Abstract

PURPOSE:To make a device compact and to correctly cut continuous PAPER SHEET as well by disusing a transfer device in a manner to enable it to have a transfer function on an infeed roller and be controlled by the approaching operation of a high speed roller with a cutting position being set mainly. CONSTITUTION:A continuous PAPER SHEET is transferred in a right direction by being sandwiched by transfer rollers 9a(9b) and infeed roller 6b, and fed to a CPU with the transfer speed and thickness being detected. When a tip detection signal is input from a detector 16, the CPU outputs a signal to a pulse motor provided on the shaft of a driving plate 25 in proper timing based on the moving speed of the form, cut size signal and thickness detection signal which are already input. An optimum interval between infeed rollers 6a, 6b and high speed rollers 14a, 14b is attained corresponding to the form thickness when the form is transferred to a proper cutting position. Further, tension is given to the PAPER SHEET, a blade 15 is abutted against a score and the PAPER SHEET is cut.

Description

[Detailed Description of the Invention] Kou 1 Johanhadaban! The present invention relates to a continuous paper cutting device, and more particularly, the present invention relates to a continuous paper cutting device that cuts continuous paper by using a transport speed difference between a pair of upper and lower infeed rollers that rotate at a predetermined speed and a pair of upper and lower high speed bead rollers that rotate at a higher speed than the infeed rollers. This invention relates to a tearing continuous paper cutting device.

This type of conventional continuous paper cutting device can be roughly divided into:
First, there is a device in which a pair of upper and lower infeed rollers and high-speed rollers constantly hold continuous paper;
There is also a device in which a pair of upper and lower infeed rollers and a high speed bead roller hold the continuous paper only when cutting the continuous paper.

In the first device, the cutting position of the continuous paper is set by separately adjusting the distance between the infeed roller and the high speed bead roller in the transport direction according to the cutting size. Since the continuous paper is transported toward the high-speed roller by the infeed roller, it is not necessarily necessary to provide a transport device such as a tractor device.

In the second device, a device such as a tractor device for transporting continuous paper is required, but the distance between the infeed roller and the high-speed roller in the transport direction remains unchanged. The timing at which the infeed roller and the high-speed roller are moved in the approaching direction to cut the continuous paper is such that the cutting size of the continuous paper matches the amount of transport of the continuous paper by a transport device such as a tractor device. set at the time.

, n. However, in the first conventional device, it is difficult to adjust the distance between the infeed roller and the high-speed roller in the transport direction according to the cutting size of the continuous paper, and it is difficult to adjust the distance. Even if the cutting is done accurately, if the cent position at the start of continuous paper work is off, an error will occur in the cutting position, which has the disadvantage that it is difficult to cut accurately at the desired cutting position. .

Furthermore, in the conventional second device, the amount of continuous paper transported by the transport device and the amount of continuous paper transported by the infeed rollers that clamp and transport the continuous paper during cutting are slightly different. As this discrepant bone accumulates, it becomes a non-negligible amount, causing an error in the cutting position.
Therefore, this second device has a drawback in that it is difficult to accurately cut at the desired cutting position unless measures are taken to prevent the above-mentioned bone transfer amount difference from accumulating. Furthermore, this second device requires a separate transfer device, which has the disadvantage that the device configuration is complicated.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a continuous paper cutting device that can reduce the size of the device and cut continuous paper at an accurate position.

In order to achieve this objective, the present invention uses a pair of upper and lower infeed rollers that rotate at a predetermined speed and sandwich the continuous paper at least at the beginning of cutting by moving relatively close to each other. and an infeed section that transfers the continuous paper by attaching a transfer roller when the infeed roller does not clamp the continuous paper when not cutting, and an infeed part that rotates at a higher speed than the pair of upper and lower infeed rollers. , a pair of upper and lower high-speed rollers that grip the continuous paper relatively close to each other during cutting and tear the continuous paper due to the difference in transport speed with the pair of upper and lower infeed rollers; A paper leading edge detection unit for detecting, a cutting size input unit for inputting the cutting size of the continuous paper, a detection signal from the leading edge detection unit, a cutting size signal from the cutting size input unit, and continuous paper transport in the infeed unit. The apparatus further includes a control means for controlling the approaching operation of at least the high-speed roller, which is a roller that is in a separated state when not cutting, of the pair of upper and lower infeed rollers and the high-speed roller, based on the amount of the high-speed roller.

Cutting of continuous paper is carried out in the same way as before by using the difference in transport speed between the upper and lower pairs of infeed rollers and high-speed rollers, but the cutting position is set using the high-speed rollers (in some cases, the infeed rollers). This is done by controlling the approach movement of the feed roller (also the feed roller), and since the infeed section has a transfer function, there is no need to separately provide a transfer device such as a tractor device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3 of the accompanying drawings.

Here, Fig. 1 is a schematic diagram of the entire continuous paper processing device, and Fig. 2 shows an infeed section having a pair of upper and lower infeed rollers and a pair of upper and lower high-speed rollers, and how these rollers are connected in the upper and lower approaching and separating directions. FIG. 3 is a side view showing the moving mechanism for moving the infeed section, and FIG. 3 is a perspective explanatory view showing the infeed section.

As shown in FIG. 1, the continuous paper 1 to be cut into unit paper 1a is folded in a zigzag shape at the folding/cutting perforations 2 which are the cutting parts, and the distance between the length in the width direction and the folding width is In other words, a predetermined position on the mounting table 3 in which a known paper size measuring device (not shown) for optically measuring the length in the width direction and the continuous direction of the unit paper 1a size using a phototube or the like is installed. will be placed on. Note that the paper size measuring device constitutes a cutting size manual section, and a light transmitting section (not shown) for measuring the paper size is provided on the upper surface of the mounting table 3. The paper size measured by this paper size measuring device is then sent to the CPU 4 as a cutting size signal. Further, the continuous paper 1 can be used either with marginal parts provided on both sides in the width direction or with the marginal parts already cut and removed, and the continuous paper 1 with the marginal parts can be used. In some cases, the material is transferred without using the marginal portion.

The continuous paper 1 is pulled upward from the mounting table 3, guided in the horizontal direction by the guide plate 5, and guided to the infeed section of the cutting device. As is clear from FIGS. 2 and 3, this infeed section is movable from 1 to 1 in the approaching and separating directions.
．． It has a pair of upper and lower infeed rollers 6a, 6b which are arranged opposite to each other with an interval of approximately 5 cranes, and these infeed rollers 6a, 6b each have an interval of 3 mm in the axial direction.
Three recesses 7a, 7b, 7c, 8a, 8b, and 8c are formed. Then, transfer rollers 9a and 9b are rotatably supported at each tip at positions corresponding to the recesses 7a and 7b of the upper infeed roller 6a, and the side surface is curved into a rocking rod. Arm 10a.

The fob is swingably supported at each base end by a support rod 11 fixed to a body (not shown). Each of the swinging arms 10a, 10b has a spring 13a disposed between a mounting plate 12 fixed to the body (not shown) and the vicinity of the base end.
, 13b, it is urged to swing clockwise in FIG. 2. As a result, each swing arm 1
Each transfer roller 9a, 9b supported at the tip of 0a, 10b
is in contact with the circumferential surface of the lower infeed roller 6b,
Each of the transfer rollers 9a, 9b and the infeed roller 6
b, the continuous paper 1 is transported when not being cut.

As is clear from FIG. 2, following the above-mentioned infeed section, an infeed roller 5a (about 1 to 1.5 cranes) is placed at a predetermined interval in the transfer direction from the infeed roller 5a (ib) and is also movable in the approaching and separating direction. A pair of upper and lower high-speed rollers 14a and 14b are provided, which are arranged opposite to each other with an interval between them.
These infeed rollers 6a, 6b and high speed roller 14a.

14b, there are provided a blade 15 for contacting each folding/cutting perforation 2 of the continuous paper 1 and a light reflective paper leading edge detector 16 serving as a paper leading edge detecting section.

When the paper leading edge detector 16 detects the leading edge of the continuous paper l, it is configured to send a detection signal to the CPU 4.

As shown in FIG. 1, the amount of transport of the continuous paper 1 in the infeed section, that is, the transport speed of the continuous paper 1 in the infeed section, is determined by an infeed roller encoder 17 that detects the amount of rotation of the infeed roller 6b. The speed detection signal is performed by the detector 18 and is configured to be sent to the CPU 4. Infeed roller 6a,
6b and the high-speed rollers 14a, 14b are rotated by transmitting the driving force of the main motor 30 via a rotational driving force transmission mechanism (not shown). Further, in the front stage of the cutting device, paper thickness detectors 19a and 19b for detecting the paper thickness in three stages, for example, "thick", "medium", and "thin" based on the amount of light transmission, are installed on the continuous paper 1. They are provided so as to sandwich the transfer path above and below, and their detection signals are sent to the CPU 4.

Next, a moving mechanism for moving the infeed rollers 6a, 6b and the high speed rollers 14a, 14b in the approaching/separating directions will be described based on FIG. 2. Lower infeed roller 6b and upper high speed roller 14
Each of the rotating shafts 20 and 21 of a is eccentrically supported by a bearing 22.23 so as to be freely rotatable, and the rotating shaft (not shown) provided at the center of each of the bearings 22.23 is connected to a machine (also not shown). It is rotatably supported by the frame. An endless belt 26 is looped around each of the bearings 22, 23 and a drive @25 fixed to the output shaft of a pulse motor 24 (see FIG. 1). The pulse motor 24
is connected to CPU4 as shown in FIG.
The output shaft is rotated by a predetermined amount in a predetermined direction in response to a drive control signal output from the output shaft. Therefore, the drive plate 25 also rotates by the same amount in the same direction as the output shaft, and this is transmitted to each bearing 22, 23 by the endless belt 26. As each of the bearings 22.23 rotates around the not-shown rotational shaft, each rotational shaft 20.21
will move in an arc in the same direction.

Therefore, the drive plate 25 is moved to the second position by the pulse motor 24.
In the figure, when rotated clockwise, the roller 6b rises,
The rollers 14a descend and move together in the approaching direction, while when the drive plate 25 is rotated back counterclockwise in FIG. 2, the rollers 6b descend and the rollers 14g rise and return to their original positions. Return.

As a result, the amount of rotation of the output shaft of the pulse motor 24 is reduced to C.
By controlling with PU4, infeed roller 6a
, 6b and high speed roller 14a.

The vertical intervals of the paper sheets 14b are adjusted, and the cutting position of the continuous paper l is set at the mvi minimum interval position. Note that the infeed roller 5a, $
Each transfer roller 9a when approaching b.

9b resists the biasing force of springs 13a, 13b and rushes into corresponding recesses 7a, 7b of infeed roller 6a.

As shown in FIG. 1, a stacker device is provided following the cutting device to sequentially stack the cut unit sheets 1a. This stacker device includes a lift table 27 that can be raised and lowered to place unit sheets 1a, and a lift table 27 that moves in the carry-in direction at a speed faster than the paper carry-out speed by the cutting device in order to reliably stack the unit sheets 1a one after another on this lift table 27. A carry-in guide belt 28 includes two parallel thin belts that are rotated in circulation, and a stopper (not shown) that can be freely positioned in the carry-in direction, where the leading edge of the unit sheet 1a that is carried in comes into contact with it.
and a paper stack amount detector which detects the position of the uppermost unit sheet 1a stacked on the lifting table 27 and sends a detection signal to the CPU 4 to lower the lifting table 27 when the position is higher than a certain position. It consists of 29.

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

First, as shown in FIG. 1, when the continuous paper 1 is placed in a predetermined folded state at a predetermined position on the mounting table 3, the paper size is measured by a paper size measuring device (not shown), and the result is measured. C as cutting size measurement signal
It is sent to the PU4 and stored in the memory of the CPU4.

Subsequently, the continuous paper 1 is pulled up and guided between the infeed rollers 6a and 6b via the guide plate 5, and transferred to the transfer rollers 9a,
The continuous paper l is held between the infeed roller 9b and the lower infeed roller 6a, and the main motor 30 is driven. As a result, the continuous paper 1 is transported in the upper right direction in FIG. 1, and the transport speed of the continuous paper 1 is detected by the detector 18 and sent to the CPU 4. During this transport process, the thickness of the continuous paper 1 is detected as it passes through paper thickness detectors 19a and 19b.
This detection signal is sent to the CPU 4.

Then, the leading edge detection signal is transmitted from the paper leading edge detector 16 to the CPU.
4, the CPU 4 outputs a drive signal to the pulse smoke 24 at an appropriate timing based on the transport speed of the continuous paper 1, cutting size signal, and thickness detection signal that have already been input.

As a result, the infeed rollers 6a, 6b and the high speed rollers 14a, 14b are spaced appropriately according to the thickness of the paper when the continuous paper 1 is transported to the proper cutting position, and the infeed rollers 6a, 6b and the high-speed rollers 14a and 14b, the blade 15 comes into contact with the folding/cutting perforation 2 of the continuous paper l held under tension, and the continuous paper l becomes the unit paper 1.
cut into a.

The cut unit sheets 1a are sequentially stacked on the lifting table 27 by the carry-in guide belt 28. When the position of the stacked highest unit sheet 1a becomes higher than a predetermined height position, the sheet stack amount detector 2
9, this detection signal is sent to the CPU 4, and the elevating table 27 is lowered by a predetermined distance.
Smooth stacking operation is achieved.

FIG. 4 shows another embodiment of the present invention, in which the tractor device 3 uses the main motor 30, which is the rotational drive source for the infeed rollers 5a and 5b, as the rotational drive source.
The continuous paper 1 used in this embodiment also has marginal portions provided on both sides in the width direction, as in the first embodiment described above. However, any continuous paper l may be used, even if the marginal portion has already been cut and removed.

Although it is not clear in the figure, when transporting without using the marginal part, the tractor equipment ff13
1 is a slitter 32 for cutting and removing the marginal portion;
At the same time, the opposing interval is widened by the rotation of the gear 34 to which the driving force of the motor 33 is transmitted, and the setting is made such that the continuous paper l can pass freely. And continuous paper 1
The transfer speed at the infeed section is not due to the rotation of the infeed roller 6b, but due to the
A detector 36 provided in a tractor encoder 35 detects the amount of rotation of the tractor device 31 which shares a rotational drive source with the tractor encoder 35, and this detection signal is sent to the CPU 4. The other configurations and operations are the same as those in the first embodiment, so their explanations will be omitted.

Note that the present invention is not limited to the above-described embodiment, and for example, the infeed roller 6a.

6b and the high-speed rollers 14a, 14b, it is not always necessary to link the paper thickness detection, and the driving source for adjusting the vertical spacing is not limited to the pulse motor 24. (i
It is also possible to configure such that a and 5b always hold the continuous paper 1, and in this case, the transport rollers 9a and 9b become unnecessary.

Furthermore, the cutting size may be manually input by button operation, etc., without using the paper size measuring device.

4-1 As is clear from the above explanation, according to the present invention, a pair of upper and lower high-speed rollers is moved closer to each other based on the cutting size of continuous paper, the amount of transport at the infeed section, and the paper leading edge detection signal. Since the continuous paper cutting position is set by operating the machine, continuous paper can be cut accurately at the desired position, and
Since the infeed section has a transfer function, there is no error in the cutting position due to the difference in the amount of transfer between the infeed section and other transfer devices for continuous paper, and it is possible to always cut at an accurate desired position. Furthermore, since there is no need to provide a separate transport device, the configuration of the continuous paper processing device can be simplified and the size can be reduced.

[Brief explanation of the drawing]

The figures show preferred embodiments of the present invention.
The figure shows the first embodiment, and FIG. 1 is a schematic diagram of the entire continuous paper processing apparatus, and FIG. FIG. 3 is a perspective view showing the infeed section, and FIG. 4 is a schematic diagram of the entire continuous paper processing apparatus according to the second embodiment. be. 1... Continuous paper 1a... Unit paper 2... Perforations for folding and cutting 3... Placement table 4...
・CPU 6a, 6b...Infeed roller
9a, 9b...Transfer roller 14a, 14b.
...High speed roller 15...Blade
16...Paper leading edge detector 17...Infeed encoder 18...Detection H24...Pulse motor 30...Main motor Patent applicant Trapan Moore Co., Ltd. Fig. Fig. C Fig. No. figure

Claims (1)

[Claims] It has a pair of upper and lower infeed rollers that rotate at a predetermined speed and sandwich the continuous paper at least during cutting, an infeed section that transports the continuous paper, and a higher speed rotation than the pair of upper and lower infeed rollers, a pair of upper and lower high-speed rollers that tear the continuous paper due to a difference in transport speed with the pair of upper and lower infeed rollers by sandwiching the continuous paper relatively close to each other during cutting;
A paper leading edge detection unit that detects the leading edge of the transported continuous paper, a cutting size input unit that inputs the cutting size of the continuous paper, a detection signal from the leading edge detection unit, and a cutting size signal from the cutting size input unit. and a control means for controlling the approaching operation of the pair of upper and lower high-speed rollers based on the continuous paper transport amount in the infeed section.