JP2652230B2 - Continuous paper cutting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous paper cutting device, and more particularly, to a pair of upper and lower infeed rollers rotating at a predetermined speed, and a pair of upper and lower rollers rotating at a higher speed than the infeed roller. The present invention relates to a continuous cutting device that tears a continuous sheet by a difference in transfer speed from a high-speed roller.

2. Description of the Related Art It has been known that a continuous paper cutting device of this type measures a paper size and sets a cutting position of the continuous paper based on the measurement result.

Problems to be Solved by the Invention However, when measuring the size of continuous paper, an error may occur due to a shift of the set position of the continuous paper with respect to the measuring device or a shift of a part of the folded continuous paper. In addition, when the cutting position is set based on the measurement result having such an error, there is a disadvantage that a cutting operation at an accurate position is not performed.

The present invention has been made in view of the above circumstances, and provides a continuous paper cutting apparatus that can correct a continuous paper cut at an accurate position even if an error occurs in the measurement of the paper size. The purpose is to:

Means for Solving the Problems In order to achieve this object, according to the present invention, there is provided a sheet size measuring device for measuring at least a folding width interval of a continuous sheet folded in a zigzag shape, and a standard size of the continuous sheet in advance. A standard size setting section for setting a plurality of
A size adjustment unit that corrects a size measurement value of the continuous paper by the paper size measurement device to an approximate standard size based on the standard size set in the standard size setting unit, and The cutting position of the continuous sheet by the pair of in-feed rollers and the pair of high-speed rollers is set based on the standard size of the continuous sheet.

Even if an error occurs in the measurement of the paper size, the correction is performed based on the standard size input in advance and the cutting position of the continuous paper is set, so that the continuous paper can always be cut at an accurate position. .

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Here, FIG. 1 is a schematic view of the entire continuous paper processing apparatus, FIG. 2 is a side view showing a moving mechanism for moving a pair of upper and lower infeed rollers and a high-speed roller in a contacting / separating direction, and FIG. FIGS. 4 and 5 are cross-sectional views of the mounting table showing the paper size measuring apparatus, FIG. 6 is a plan view of continuous paper, and FIG.
The figure is a flowchart showing the operation of measuring the paper size and correcting it to the standard size.

As shown in FIG. 1, a continuous sheet 1 to be cut into unit sheets 1a is folded in a zigzag shape at a folding / cutting perforation 2 serving as a cut portion thereof, and the length between the width direction and the interval between the folding widths, In other words, the sheet size measuring device for measuring the length in the width direction and the continuous direction in the unit sheet 1a size is placed at a predetermined position on the placing table 3 provided therein. As shown in FIG. 6, the continuous paper 1 is provided with marginal portions 5,5 on both sides in the width direction at the perforations 4,4 for cutting, and these marginal portions 5,5 have a large number of marginal holes. 6, 6 are provided at equal intervals.

As shown in FIG. 3, the top plate 3a of the mounting table 3 on which the continuous paper 1 is placed has a continuous length for measuring the length of the unit paper 1a in the width direction (hereinafter, appropriately referred to as upper width). An elongated light transmitting plate 7 extending in the width direction of the paper, and an elongated light transmitting plate 7 extending in a direction perpendicular to the light transmitting plate 7 for measuring the length of the unit paper 1a in the continuous direction (hereinafter, appropriately referred to as upper depth). And a light transmitting plate 8. As shown in FIG. 4, at a position corresponding to the light transmitting plate 7 in the mounting table 3, a rotation shaft 11 rotatably supported by support plates 9, 10 fixed in the mounting table 3 described above. The rotating shaft 11 is provided with a photoelectric tube 12 having a rotation stopping mechanism (not shown). A drive motor 13 is provided at one end of the rotating shaft 11, and a slit plate 14 is provided at the other end. This slit plate 14
A slit detection device 15 is provided on the support plate 10 in correspondence with the lower edge. In addition, limit switches 16 and 17 are provided on the support plate 10 and the other support plate 9 corresponding to the moving path of the photoelectric tube 12, respectively. With the above configuration, the width of the unit paper 1a is measured.

On the other hand, as shown in FIG.
A mechanism for measuring the depth of the unit paper 1a having the photoelectric tube 18 configured similarly to the configuration for measuring the width of the unit paper 1a is provided at a position corresponding to. Regarding the mechanism for measuring the depth of the unit paper 1a, the same reference numerals with "a" attached to the components corresponding to the mechanism for measuring the width described above will be used, and detailed description will be omitted. The measurement of the length of the unit paper 1a is detected as a movement amount due to the rotation of the rotation shafts 11, 11a of the photoelectric tubes 12, 18 due to the driving of the respective drive motors 13, 13a.
The slit detectors 15 and 15a are configured to convert the number of slits to pass through the slits at the same pitch due to the rotation of the slits 14 and 14a and detect the number of slits. Then, this detection signal is sent to the size adjustment unit of the CPU 19 shown in FIG.

The size adjustment unit converts the input measurement value into a CP
This is to correct the standard size closest to the standard size set in the standard size setting unit in U19. In this correction, the measurement value corresponding to the center of the two standard sizes is configured to be rounded up to the larger standard size. In the standard size setting section, the standard size of the width of the unit paper 1a is set in 1/10 inch units, and the standard size of the depth is set in 1/2 inch units as appropriate.

As shown in FIG. 1, the continuous paper 1 is pulled out upward from the mounting table 3, the marginal holes 6, 6 on both sides in the width direction are engaged with the tractor pins of the tractor 20, and the tractor 20 is moved by the main motor 21. By being driven to rotate, the first
It is configured to be transported rightward in the figure. The transfer speed is determined by a detector 23 provided in a tractor encoder 22 for detecting the amount of rotation of the tractor 20, and the speed detection signal is sent to the CPU 19. The continuous paper 1 is cut off the marginal portions 5, 5 from the cutting perforations 4, 4 by a slitter 24 disposed near the end of the tractor 20 in the transfer direction, and is further transferred in the same direction to the cutting device. Supplied. The tractor 20, together with the slitter 24, a gear to which the driving force of the motor 40 is transmitted.
The opposing interval, that is, the interval corresponding to the width of the continuous paper 1 is adjusted by the rotation of 41. Then, the motor 40 corrects the measurement result of the width of the unit paper 1a by the paper size measuring device by the size adjustment unit.
Driving is controlled by 9 control signals. Note that the facing distance of the tractor 20 corresponds to the continuous paper 1 measured by the photoelectric tube 12.
The margin is set to be 0.5 inch narrower than the width of the rim, and the marginal holes 6, 6 provided 0.25 inch inside from the edge are adjusted to correspond to the tractor pins.

In front of the cutting device, sheet thickness detectors 25a and 25b for detecting the sheet thickness based on the amount of transmitted light are provided so as to sandwich the continuous paper 1 transport path up and down, and the detection signal is CP.
It is configured to be sent to U19. Following the sheet thickness detectors 25a and 25b, a pair of upper and lower infeed rollers 26a and 26b are disposed so as to be movable in the contact and separation directions with an interval of about 1 to 1.5 mm, and these infeed rollers 26a, 26b
A pair of upper and lower high-speed rollers 27a and 27b are provided so as to be movable in the contact and separation directions at a predetermined interval in the transport direction and also opposed to each other at an interval of about 1 to 1.5 mm. Between the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b, there are provided a blade 28 and a sheet leading edge detector 29 for contacting each folding / cutting perforation 2 of the continuous sheet 1. ing.

Next, a moving mechanism for moving the in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b in the direction of contact and separation will be described with reference to FIG. The rotating shafts 30, 31 of the lower in-feed roller 26b and the upper high-speed roller 27a are eccentrically supported by bearings 32, 33, respectively, and are rotatably supported, and are provided at the centers of the bearings 32, 33, respectively. The rotating shaft not shown is rotatably supported by a machine frame (not shown). And, each of the bearings 32, 33
An endless belt 36 is stretched over a driving plate 35 fixed to an output shaft of a pulse motor 34 (see FIG. 1). The pulse motor 34 is connected to the CPU 19 as shown in FIG. 1, and the output shaft is rotated by a predetermined amount in a predetermined direction by a drive control signal corresponding to the depth standard size corrected by the size adjusting unit of the CPU 19. It is. Therefore, the driving plate 35
Also rotates by the same amount in the same direction as the output shaft, and this is transmitted to the bearings 32 and 33 by the endless belt 36. When the bearings 32 and 33 rotate about the rotation shaft (not shown), the rotation shafts 30 and 31 make circular motions in the same direction. For this reason, when the driving plate 35 is rotated clockwise in FIG.
26b rises, the roller 27a descends, and both move in the approaching direction. On the other hand, when the driving plate 35 is rotated and returned counterclockwise in FIG. 2, the roller 26b descends, and the roller 27a rises. And return to the original position. By controlling the amount of rotation of the output shaft of the pulse motor 34 by the CPU 19, the vertical distance between the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b is adjusted. The cutting position of the sheet 1 is set.

As shown in FIG. 1, following the cutting device, there is provided a stacker device for sequentially stacking the cut unit sheets 1a. The stacker device includes a vertically movable elevating table 36 on which the unit paper 1a is placed, and a transporting direction at a speed higher than the paper unloading speed by the cutting device to reliably stack the unit papers 1a on the elevating table 36 sequentially. A carry-in guide belt 37 having two parallel narrow belts rotated and rotated.
And a stopper 39 which can be positioned in the carrying direction in which the leading edge of the carried unit paper 1a is abutted, and the lifting table
It comprises a paper stack amount detector 38 which detects the position of the topmost unit paper 1a stacked on 36, and sends a detection signal for lowering the elevating table 36 to the CPU 19 when it becomes higher than a certain position. I have.

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

First, as shown in FIG. 1, the continuous paper 1 is placed at a predetermined position on the mounting table 3 in a predetermined folded state, and a paper size measurement operation is performed. This measurement operation will be described with reference to FIG. 7 together with the control operation of the CPU 19. First, each of the drive motors 13 and 13a is driven, each of the rotation shafts 11 and 11a is rotated, and each of the photoelectric tubes 12 and 18 is moved to the above-mentioned position. It is moved along the axes 11, 11a (step 101).

Here, in the case of the wize measurement, the moving amount from the time when the light of the photoelectric tube 12 is transmitted through the light transmitting plate 7 and is blocked by the continuous paper 1 to the time when the light is transmitted again corresponds to the width of the continuous paper 1, This movement amount is counted in the slit detection device 15 from the time of the above-mentioned light shielding to the time of light transmission again, and the counted number is replaced by the movement amount of the photoelectric tube 12 and the CPU 19 is used as a width detection signal. Output to the size adjustment unit (step 102). The size adjustment unit of the CPU 19 compares the width detection signal with the width standard size preset in the standard size setting unit and corrects it to an approximate width standard size (step 103). For example, if a width detection signal corresponding to 3.25 inches is output, the standard size of the standard size setting unit is 1/10
Since it is set in inches, 3.24 inches is 3.
It will be between 2 inches and 3.3 inches and will be modified to an approximate 3.2 inches. Then, the CPU 19 sends a drive control signal based on the correction value to the motor 40 (step
104), the facing interval of the tractor 20 is adjusted to the width of the continuous paper 1 via the gear 41 (step 105).

On the other hand, in the case of depth measurement, the photoelectric tube 18 is already shielded from light at the movement start position when the continuous paper 1 is placed in the predetermined state. In the detection device 15a, the number of slits is counted from the above-mentioned movement start time to the time of light transmission, and the movement amount obtained by replacing the count number and the photoelectric tube are counted.
The distance from the end of the continuous paper at the initial position of the continuous paper 18 is added, and the result is output to the size adjustment unit of the CPU 19 as a depth detection signal of the continuous paper 1 (step 102). The size adjustment unit of the CPU 19 compares this detection signal with the depth standard size preset in the standard size setting unit, and corrects it to an approximate depth standard size (step 103). For example, if a depth detection signal equivalent to 4.25 inches is output, the standard depth setting of the standard size setting unit is 1/2.
The 4.25 inch is set to 4.
It will be located between 0 inches and 4.5 inches, corresponding exactly to the middle and rounded up to 4.5 inches. Then, the CPU 19 sends a drive control signal based on the correction value to a drive motor (not shown) for adjusting the position of the stopper 39 of the stacker device (step 106) and adjusts the position of the stopper 39 to the depth of the unit paper 1a. (Step 107). Further, the corrected depth detection signal is output from the CPU 19.
Is stored in the memory. Thus, the sheet size measurement operation ends.

Subsequently, the continuous paper 1 is pulled up, the marginal holes 6, 6 are engaged with the tractor pins of the tractor 20 whose facing distance is adjusted, and the main motor 21 is driven. Thereby, the continuous paper 1 is transported rightward in FIG. 1, the marginal portions 5, 5 are cut off by the slitter 24, and further transported. The transfer speed of the continuous paper 1 is detected by the detector 23 and sent to the CPU 19. Next, the continuous paper 1
When the sheet passes through the sheet thickness detectors 25a and 25b, its thickness is detected, and this detection signal is sent to the CPU 19.

Further, when a leading edge detection signal is input from the sheet leading edge detector 29 to the CPU 19, the CPU 19 outputs a pulse at an appropriate timing based on the already input transport speed of the continuous sheet 1 and the corrected depth detection signal and thickness detection signal. Motor 34
To output a drive signal. Thereby, when the continuous paper 1 is transferred to the cutting position suitable for the corrected depth, the in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b have an appropriate interval according to the paper thickness.
The blade 28 abuts the folding / cutting perforation 2 of the continuous paper 1 to which the tension is applied by the in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b, and the continuous paper 1 is cut into unit paper 1a. You.

The cut unit papers 1a are sequentially stacked on the mounting table 3 by the carry-in guide belt 37. Here, since the position of the stopper 39 has already been adjusted to match the depth of the unit paper 1a, the carry-in operation is performed smoothly.
Further, when the position of the stacked top unit paper 1a is higher than a predetermined height position, the paper stack amount detector
The detection signal is sent to the CPU 19, and the elevating table 36 is lowered by a predetermined distance, so that a smooth stacking operation is always performed.

Note that the present invention is not limited to the above-described embodiment.For example, in adjusting the vertical distance between the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b, it is not necessary to always connect with the detection of the sheet thickness. Further, the drive source for adjusting the vertical interval is not limited to the pulse motor 34. Further, the setting of the cutting position of the continuous paper 1 is performed by adjusting the vertical distance between the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b, and the transfer direction of the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b. It is also possible to adjust the distance between the two. Further, the paper size measuring device can be variously changed in addition to the device using the photoelectric tubes 12 and 18. Furthermore, it is also possible to transfer the continuous paper 1 using a roller or the like instead of the tractor 20. Also, it is not always necessary to measure the width of the continuous paper 1.

Effect As is apparent from the above description, according to the present invention, the depth (interval of the folding width) of the continuous paper is measured,
Based on the result of correcting the measured size to the standard size, the cutting position of the continuous paper by the pair of upper and lower infeed rollers and the high-speed roller is set, so even if an error occurs in the paper measurement, There is an effect that the paper can be cut accurately at a desired position.

[Brief description of the drawings]

FIG. 1 shows a preferred embodiment of the present invention. FIG. 1 is a schematic view of the entire continuous sheet processing apparatus, and FIG. 2 is a moving mechanism for moving a pair of upper and lower in-feed rollers and a high-speed roller in a direction of contact and separation. , FIG. 3 is a plan view of a mounting table in which a paper size measuring device is installed, FIGS. 4 and 5 are cross-sectional views of the mounting table showing the paper size measuring device, and FIG. FIG. 7 is a flowchart showing the operation of measuring the paper size and correcting it to the standard size. 1 ... continuous paper, 1a ... unit paper, 2 ... perforation and cutting perforation, 3 ... mounting table, 12, 18 ... photoelectric tube, 14, 14a ...
… Slit plate, 15,15a …… Slit detector, 19 …… CP
U, 20… tractor, 21… main motor, 26a, 26b…
Infeed rollers, 27a, 27b High-speed rollers, 28 Blades, 34 pulse motors, 36 Elevating tables, 39 Stoppers

Claims (1)

(57) [Claims] 1. A continuous paper cutting device for tearing continuous paper by a difference in transport speed between a pair of upper and lower in-feed rollers rotating at a predetermined speed and a pair of upper and lower high-speed rollers rotating at a higher speed than the in-feed roller. A paper size measuring device that measures at least the interval of the folding width of the continuous paper folded in a zigzag shape; a standard size setting unit that sets a plurality of standard sizes of the continuous paper in advance; A size adjustment unit that corrects the size measurement value to an approximate standard size based on the standard size set by the standard size setting unit, and based on the standard size of the continuous paper corrected by the size adjustment unit. Continuous paper cutting for setting a continuous paper cutting position by a pair of in-feed rollers and the pair of high-speed rollers Apparatus.