JP2900074B2 - 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 apparatus, and more particularly, to a pair of infeeds which are opposed to each other so as to be relatively movable in a contacting / separating direction at a predetermined interval vertically. Rollers, a pair of high-speed rollers that rotate at a higher speed than the in-feed roller, which are also arranged to be movable in the direction of contact and separation at predetermined intervals vertically, and are disposed between each pair of these rollers. Cutting auxiliary means for giving a trigger for cutting by contacting the continuous paper, moving each of the pair of rollers at the time of cutting in the approaching direction, and adjusting the tension due to the difference in the transport speed of the pair of rollers with respect to the continuous paper. The present invention relates to a so-called fixed type continuous paper cutting device for cutting the continuous paper to a predetermined length by the cutting auxiliary means.

2. Description of the Related Art Conventionally, in this type of continuous paper cutting device, continuous operation is performed by controlling the contact / separation operation between a pair of upper and lower in-feed rollers and a high-speed roller according to a previously input continuous paper cutting size. Only the paper is cut, and the processing speed and paper thickness of the continuous paper accompanying the rotation speed of each pair of rollers are not taken into consideration.

Therefore, in the related art, as the processing speed of the continuous paper increases, the timing of the contact / separation operation is delayed, and it is difficult to perform an accurate cutting operation corresponding to the processing speed. Has been inconvenient. This inconvenience becomes more remarkable as the processing speed of the continuous paper increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a continuous paper cutting apparatus capable of solving this inconvenience and performing an accurate cutting operation corresponding to the processing speed and the paper thickness of the continuous paper.

Means for Solving the Problems In order to achieve this object, the present invention moves a pair of upper and lower rollers in the approaching direction at the time of cutting, respectively, and utilizes a difference in the transport speed of the pair of rollers with respect to continuous paper to make a tension. A continuous paper cutting device that cuts the continuous paper to a predetermined length by contacting the continuous paper with a cutting auxiliary means such as a blade, automatically measuring the cut size of the continuous paper, or Paper cutting size input means for inputting by manual operation of a keyboard, etc .; and processing speed of continuous paper from the rotation speed of the pair of in-feed rollers or the pair of high speed rollers, or continuous paper by a continuous paper feeding device such as a tractor. Processing speed detecting means for detecting from the transfer speed of the sheet, the detection result of the processing speed detecting means and the input of the paper cutting size. Means for controlling the timing of moving each of the pair of rollers in the approaching direction based on the input result by the means, and automatically measuring the thickness of the continuous paper, or inputting by manual operation of a keyboard or the like. Paper thickness input means to provide, the approach timing control means, based on each input result by the paper thickness input means and the paper cut size input means and the detection result by the processing speed detection means, to each of the pair of rollers A configuration may be adopted in which the timing of moving each in the approach direction is controlled.

The timing of moving the pair of upper and lower in-feed rollers and the high-speed roller in the approaching direction is controlled based on the information of the input paper cut size, the detected processing speed and the detected paper thickness. At a timing corresponding to the processing speed, an accurate cutting operation at a desired position of the continuous paper is performed.

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 including a continuous paper cutting apparatus, and FIG. 2 is a moving mechanism for moving a pair of upper and lower infeed rollers and a high-speed roller in the approaching direction, and inputting a paper thickness. FIG. 3 is a side sectional view of the sheet thickness detecting device, and FIG. 4 is a view corresponding to the sheet thickness for the moving mechanism.
Flowchart showing the approach timing setting operation of the CPU,
FIG. 5 is a time chart showing an output state of a control signal according to the sheet thickness, FIG. 6 is a time chart showing an example of detection of the sheet processing speed, and FIG. A timing table showing correction values for the approach timing of each pair of in-feed rollers and high-speed rollers,
FIG. 8 is a time chart showing the process from the detection of the leading edge of the continuous paper to the completion of the cutting operation. FIG. 9 is a plan view of a mounting table in which a paper size measuring device serving as a paper cutting size input means is provided. FIG. 11 is a sectional view of a mounting table showing a sheet size measuring apparatus, and FIG. 12 is a plan view of a continuous sheet.

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 as the cut size in the unit sheet 1a size is placed at a predetermined position on the placing table 3 in which the sheet size measuring device is installed. The paper size measuring device constitutes a paper cut size input means. Then, as shown in FIG. 12, the continuous paper 1 is provided with marginal portions 5, 5 on both sides in the width direction at the boundaries of the cutting perforations 4, 4, and these marginal portions 5, 5 are provided.
Are provided with a number of marginal holes 6, 6 at equal intervals.

As shown in FIG. 9, the top plate 3a of the mounting table 3 on which the continuous paper 1 is placed has an elongated shape extending in the width direction of the continuous paper in order to measure the length of the unit paper 1a in the width direction. Light transmitting plate 7 and an elongated light transmitting plate 8 extending in a direction perpendicular to the light transmitting plate 7 for measuring the length of the unit paper 1a in the continuous direction.
Are provided. As shown in FIG. 10, at a position corresponding to the light transmitting plate 7 in the mounting table 3, a rotating shaft rotatably supported by supporting plates 9, 10 fixed in the mounting table 3 described above.
11 is extended, and a rotation stopping mechanism (not shown) is attached to the rotating shaft 11.
A phototube 12 provided with. The rotating shaft 11
A drive motor 13 is provided at one end, and a slit plate 14 is provided at the other end. A slit detection device 15 is provided on the support plate 10 corresponding to the lower edge of the slit plate 14. 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 length in the width direction of the unit paper 1a is measured.

On the other hand, as shown in FIG.
A mechanism for measuring the length in the continuous direction of the unit paper 1a having the photoelectric tube 18 configured similarly to the configuration for measuring the length in the width direction of the unit paper 1a is provided at the position corresponding to . Regarding the mechanism for measuring the length in the continuous direction of the unit paper 1a, the same reference numerals with "a" added to the components corresponding to the mechanism for measuring the length in the width direction are used, and detailed description is omitted. I do. The measurement of the length of the unit paper 1a is detected as the movement amount due to the rotation of the rotating shafts 11 and 11a of the photoelectric tubes 12 and 18, and the movement amount is determined by the rotation of the slit plates 14 and 14a. The slit number is converted into the number of passages and detected by the slit detection devices 15 and 15a. And
This detection signal is sent to the CPU 19 shown in FIG.

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 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 that detects the amount of rotation of the tractor 20, and the speed detection signal is sent to the CPU 19 as a processing speed detection signal. 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, is configured so that the opposing interval, that is, the interval in the width direction of the continuous paper 1 is adjusted by the rotation of the gear 41 to which the driving force of the motor 40 is transmitted. The motor 40 is controlled by the CPU 19 based on the measurement result of the length of the unit paper 1a in the width direction by the paper size measuring device.
The driving is controlled by the control signal. The spacing between the tractors 20 is set to be 0.5 inches narrower than the width in the width direction of the continuous paper 1 measured by the photoelectric tube 12, and the marginal holes 6,6 provided 0.25 inches inside from the edge are set. Are adjusted to correspond to the tractor pins.

The cutting device comprises a pair of upper and lower infeed rollers 26a, 26b opposed to each other at an interval of about 1 to 1.5 mm movably in the contact and separation directions, and a predetermined interval in the transport direction with the infeed rollers 26a, 26b. A pair of upper and lower high-speed rollers 27a and 27b, which are also arranged at an interval of about 1 to 1.5 mm so as to be freely movable in the contact and separation directions, and these in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b. And a plate-like blade 28 serving as a cutting assisting means which comes into contact with each folding / cutting perforation 2 of the continuous paper 1 and gives an opportunity for cutting. The respective drive rollers of the pair of upper and lower in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b are connected to a main motor 21 as a rotation drive unit via a rotation transmission mechanism (not shown). Therefore, the pair of upper and lower infeed rollers
The paper processing speed associated with the rotation speeds of the high speed rollers 27a and 27b and the high speed rollers 26a and 26b can be detected from the rotation amount of the tractor 20 instead of the transfer amount of the continuous paper 1 by the tractor 20, and as described above, The rotation amount is detected by a detector 23 provided on the tractor encoder 22 and sent to the CPU 19. The tractor encoder 22 and the detector 23 constitute a processing speed detecting means, and the CPU 19 constitutes an approach timing control means.The higher the detected processing speed, the more the CPU 19 detects the pair of upper and lower infeeds. The timing at which the rollers 26a, 26b and the high speed rollers 27a, 27b are moved in the approaching direction, respectively, is quickly controlled. Further, the high-speed rollers 27a, 27b of the blade 28
A paper leading edge detector 29 is provided near the side, and a paper leading edge detection signal from the paper leading edge detector 29 is also sent to the CPU 19.

Next, a moving mechanism for moving the in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b in the approaching direction and the thickness of the continuous paper 1 are set to "thick", "medium", and "thin".
The paper thickness detecting device as the paper thickness input means for detecting in three stages will be described.

As shown in FIG. 2, the lower infeed roller 26b
The rotating shafts 30 and 31 eccentrically provided on the high speed roller 27a and the upper high speed roller 27a are rotatably supported by bearings (not shown) provided on the machine frame 25 (see FIG. 3). The driven pulleys 32 and 33 are mounted concentrically. An endless belt 46 is stretched between the driven pulleys 32 and 33 and a drive pulley 35 fixed to an output shaft of a rotary solenoid 34 (see FIG. 3) attached to the machine frame 25. . As shown in FIG. 1, the rotary solenoid 34 serving as the contact / separation driving means is connected to the CPU 19 serving as the approach timing control means, and the output shaft is rotated by a predetermined amount in a predetermined direction by a drive control signal from the CPU 19. . Therefore, the driving pulley 35 also rotates by the same amount in the same direction as the output shaft, and this is the endless belt 46.
Is transmitted to the driven pulleys 32 and 33. As the driven pulleys 32 and 33 rotate about the rotary shafts 30 and 31, respectively, the rollers 26b and 27a make circular motions in the same direction. For this reason, when the drive pulley 35 is rotated clockwise in FIG. 2 by the rotary solenoid 34, the roller 26b rises, the roller 27a descends, and approaches the rollers 26a, 27b which are opposed to each other. When the drive pulley 35 is rotated and returned in the counterclockwise direction in FIG. 2 while the roller 26b moves in the direction shown in FIG.
Rises and returns to its original position. As a result, the rotation start timing and the rotation amount of the output shaft of the rotary
By controlling with U19, the in-feed rollers 26a, 26b
And the high-speed rollers 27a and 27b are set to approach each other, and the vertical interval is adjusted.

More specifically, as shown in FIG. 5, a voltage of −12 V is applied to the rotary solenoid 34 when it is not operating, and when a voltage of +45 V is applied, the output shaft moves clockwise in FIG. The roller 26b rises, the roller 27a descends, and the rollers 26a, 27b
When a voltage of -45 V is applied while the roller moves in the approaching direction, the output shaft rotates counterclockwise in FIG. 2 so that the roller 26b descends and the roller 27a rises, It is configured to move in a direction away from the rollers 26a and 27b which are both opposed to each other.

As shown in FIGS. 2 and 3, the drive pulley 35 includes:
A rotating plate 42, which is a displacement member that is rotated and displaced in accordance with the rotation of the drive pulley 35, is fixed, and a notch 43 is formed at a tip end of the rotating plate 42, and a notch 43 is formed on one side thereof. Contact 42a
Are integrally bent. The contact portion 42a contacts the stopper 45 in the standby state to determine the initial position of the rotary plate 42. On the other hand, the machine frame 25 has an optical sensor
44 is attached, and the detection part is in the center (x mark on Fig. 2)
Is located at a position corresponding to the movement path of the distal end of the rotary plate 42. The optical sensor 44 detects the amount of rotation of the rotating plate 42 in three stages based on the displacement position of the notch 43. In the first stage, the rotating plate 42 is moved from the initial state position to the position shown in FIG. When the notch 43 does not reach the detecting portion, the notch 43 reaches the detecting portion, and the notch 43 reaches the detecting portion.
At the stage (state shown in FIG. 2) after passing through the detection unit. Then, since the rotating plate 42 returns to the initial state position again from the maximum rotating position, the number of detections of the notch 43 is 0 in the first stage, and the number of detections of the notch 43 is 1 in the second stage. In the third stage, the number of times the notch 43 is detected is two. The optical sensor 44 sends the detection of the notch 43 to the CPU 19 as a detection signal, and the CPU 19 determines the sheet thickness of the continuous sheet 1 in three stages according to the number of inputs of the detection signal. If the number of inputs is 1, it is determined as "medium", and if the number of inputs is 2, it is determined as "thin". In a state where the paper thickness is not detected, the CPU 19 is configured to perform the control operation by setting the paper thickness to “medium”.

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.
The position of the uppermost unit paper 1a stacked on the elevating table 36 is detected, and when it becomes higher than a certain position, a detection signal for lowering the elevating table 36 is sent to the CPU 1.
9 is provided with a paper stack amount detector 38 to be sent.

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 measurement operation for inputting a unit paper size is performed. This measurement operation is performed in the tenth
As shown in FIG. 11 and FIG. 11, the driving is performed by driving the driving motors 13 and 13a, rotating the rotating shafts 11 and 11a, and moving the photoelectric tubes 12 and 18 along the shafts 11 and 11a. . Here, the photoelectric tube 12
The amount of movement from the time when the light 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 length of the continuous paper 1 in the width direction. apparatus
At 15, the number of slits from the point at which the light was
The counting is performed until the light is transmitted again, and this count is replaced by the amount of movement of the photoelectric tube 12 and is used as a detection signal by the CPU 19.
Output to The CPU 19 sends a drive control signal based on the detection signal to the motor 40, and the tractor
Adjust the facing interval of 20 to the width of the continuous paper 1. On the other hand, 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, and therefore, the amount of movement from the start of movement to the point of light transmission is determined by the slit detection device 15a. The number is counted from the above-described movement start time to the light transmission time, and the movement amount obtained by replacing the counted number and the distance from the end of the continuous paper at the initial position of the photoelectric tube 18 are added to obtain the continuous paper 1 And outputs it to the CPU 19 as a detection signal. Then, this detection signal is stored in the memory of the CPU 19.

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.

Next, the continuous paper 1 is transferred to a cutting device, and when the continuous paper 1 is sandwiched between the in-feed rollers 26a and 26b and the high-speed rollers 27a and 27b, the paper thickness is detected and a cutting operation is performed. Here, in the first cutting operation, the sheet thickness has not been detected, so the CPU 19 sets this to "medium". Since the sheet transfer is intermittently performed little by little by a job switch (not shown), the processing speed is set to 0. Then, the cutting operation is controlled on the basis of the already-inputted cutting size.
Generally, the detection of the processing speed is performed as shown in FIG.
Detector 2 based on the number of reference clock pulses in U19
This is detected by counting the number of tractor encoder pulses input from 3, and in the illustrated example, the processing speed is faster because the number of input pulses in the (A) input state is larger than in the (B) input state. ing.

Therefore, in the first cutting operation, the processing speed is 0, and as shown in FIG. 7, the approach timing of the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b It is set at the time when the perforation 2 passes through the blade. The second and subsequent cutting operations are controlled by the CPU 19 based on the sheet thickness detected during the first cutting and the processing speed detected immediately before. The paper cutting size does not change in the second and subsequent cutting operations.

The approach timing of the infeed rollers 26a, 26b and the high-speed rollers 27a, 27b by the CPU 19 based on the detection result of the paper thickness and the detection results of the processing speed and the paper cut size in the second and subsequent cutting operations. Will be described with reference to FIG. 4, FIG. 5, FIG. 7, and FIG.

First, the approach timing setting operation based on the sheet thickness will be described with reference to FIG. In the first cutting operation described above, the infeed rollers 26a and 26b and the high-speed rollers 27a and 27b approach each other according to the drive timing (standard timing) of the rotary solenoid 34 whose paper thickness is controlled to be "medium" by the CPU 19. In the direction, and pinches the continuous paper 1. At this time, the notch 43 of the rotating plate 42 is detected by the optical sensor 44, and a detection signal is sent to the CPU 19 (step 101). Here, if the detection signal is input twice and it is determined that the sheet thickness is "thin" (step 10).
2), the drive timing of the rotary solenoid 34 is set earlier (step 103). According to this advance timing, as is apparent from FIG. 5, after the leading edge detection signal of the continuous paper 1 by the leading edge detector 29 is input to the CPU 19, the standard (“medium”) corresponding to the paper transport speed and the cutting size is used. The predetermined time t ₁ earlier than the timing of
A drive signal is output to the rotary solenoid 34, that is, a voltage of +45 V is applied. Therefore, the interval when the continuous paper 1 reaches the rollers 26a, 26b and 27a, 27b is set to be narrower than the standard (in the case of "medium").

If it is determined in step 102 that the sheet thickness is not “thin”, it is determined in step 104 whether the sheet thickness is “medium”.
Here, if the detection signal is input once and it is determined to be "medium", the drive timing of the rotary solenoid 34 is set to the standard timing (step 105). According to this standard timing, as apparent from FIG. 5, after the leading edge detection signal of the continuous paper 1 by the paper leading edge detector 29 is input to the CPU 19, the rotary is rotated at a normal timing according to the paper transport speed and the cutting size. A drive signal is output to the solenoid 34, that is, a voltage of +45 V is applied. The interval between the rollers 26a, 26b and 27a, 27b at this time is a standard interval.

If it is determined in step 104 that the paper thickness is not “medium”, it means that no detection signal is input, and
In step 106, processing is performed as "thick", and the drive timing of the rotary solenoid 34 is set to a later timing (step 107). According to this delay timing, as is apparent from FIG. 5, after the leading edge detection signal of the continuous paper 1 by the paper leading edge detector 29 is input to the CPU 19, the standard ("medium" the predetermined time t ₂ later than the timing when) the "output of the drive signal to the rotary solenoid 34, i.e. + 45V voltage application is performed. Therefore, when the continuous paper 1 reaches the rollers 26a, 26b and 27a, 27b, the rollers 26a, 26b and 27a, 27
The interval of b is set wider than the standard ("medium").

Next, correction of the approach timing control of the pair of rollers 26a, 26b and 27a, 27b based on the transfer speed will be described with reference to FIGS. As shown in FIG. 7, a correction value according to the sheet thickness is determined in advance for each sheet transport speed at intervals of 30 FPM. This correction value is determined by the pair of rollers.
The time required for each sheet thickness from the start of the approaching operation of 26a, 26b and 27a, 27b until the continuous sheet 1 is nipped, and the folding / cutting perforation 2 reaches the blade 28 after the leading edge of the sheet is detected. Calculated based on the required time for each paper transfer speed up to
The pair of rollers 26a, 26b, 27a, and 27a, at the input time which is earlier than the pulse input at the time when the folding / cutting perforation 2 to be cut by counting the number of pulses input to the blade 28 reaches the blade 28. This determines the timing of starting the approaching operation of 27b.

Accordingly, based on the cut size signal input in advance, the CPU 19 detects the thickness of the continuous paper 1 as shown in FIG. 8 and further inputs the leading edge detection signal, as shown in FIG. Then, a drive signal is output to the rotary solenoid 34 at a timing corrected according to the transfer speed signal of the continuous paper 1 input from the detector 23 after setting the timing based on the timing. Thereby, the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b
When the continuous paper 1 is transported to a predetermined position, the upper and lower intervals are appropriate intervals according to the thickness of the paper, and the in-feed rollers 26a and 26b and the high-speed roller 27
The blade 28 abuts the folding / cutting perforation 2 of the continuous paper 1 to which the tension is applied by the a and 27b, and the continuous paper 1 is cut into the unit paper 1a.

Immediately after the cutting is completed, a voltage of -45 V is applied, and the rollers 26b and 27a are moved in the separating direction. The timing for moving the rollers 26b and 27a in the separating direction is the same regardless of the paper thickness, as shown in FIG.

Then, the cut unit paper 1a is fed into the carry-in guide belt.
By 37, they are sequentially stacked on the elevating table 36. Here, when the position of the uppermost unit sheet 1a is higher than a predetermined height position, the sheet stack amount detector 38 detects the position, and this detection signal is sent to the CUP 19, and the elevation table 36 is moved by a predetermined distance. It is lowered, and a smooth stacking operation is always performed.

Incidentally, the present invention is not limited to the above-described embodiment, for example, the drive source that closes the vertical gap between the in-feed rollers 26a, 26b and the high-speed rollers 27a, 27b is not limited to the rotary solenoid 34, A pulse motor, a servo motor, or the like may be used. When a pulse motor or a servomotor is used, the rotation can be controlled at a speed following the processing speed by sending a pulse based on the processing speed data by the processing speed detecting means. Further, as the cutting assisting means, in addition to the plate-like blade 28, a member having a shape in which the central portion in the longitudinal direction has the maximum diameter and gradually decreases in diameter toward both ends may be used, and the shape is not limited at all. Not done. Further, it is also possible to transfer the continuous paper 1 by a roller or the like instead of the tractor 20. Furthermore, the length of the continuous paper 1 in the width direction need not always be measured, and the configuration of the paper size measuring apparatus may be variously changed, for example, the measurement may be performed using elements other than the photoelectric tubes 12 and 18. . Further, the paper size input device automatically measures and inputs the interval of the folding width, which is the cut size of the continuous paper 1, like a paper size measuring device, and manually inputs the cut size value like a keyboard input. It may be. Furthermore, by providing a plurality of notches 43 of the rotating plate 42,
It is possible to detect the paper thickness in more stages. The displacement member is not limited to the rotating plate 42, of course. Further, the detection of the paper processing speed is not based on the rotation amount of the tractor 20, but on any one of the pair of rollers 26a, 26b, 27a, 27b.
May be detected from the amount of rotation of.

Effects As is apparent from the above description, according to the present invention, the cutting size and the paper thickness of the continuous paper are input, the processing speed of the continuous paper is detected, and a pair of upper and lower infeeds are detected based on these results. Since the roller and the high-speed roller are moved close to each other in the up-down direction, the continuous sheet 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 an entire continuous sheet processing apparatus including a continuous sheet cutting apparatus, and FIG. 2 shows a pair of upper and lower infeed rollers and a high-speed roller in an approaching direction. FIG. 3 is an enlarged view showing a moving mechanism for moving the sheet thickness detecting device, and FIG. 3 is a side sectional view of the sheet thickness detecting device;
FIG. 4 is a flowchart showing an operation of setting the approach timing of the CPU to the moving mechanism, FIG. 5 is a time chart showing an output state of a control signal according to a sheet thickness, FIG. 6 is a time chart showing an example of detection of a processing speed, FIG. 7 is a timing chart showing correction values for the approach timing based on the detection of the sheet thickness of each of the upper and lower infeed rollers and the high-speed roller based on the processing speed, and FIG. 8 shows the cutting operation from the detection of the leading edge of the continuous sheet. Up to the ninth time chart
The figure is a plan view of the mounting table in which the paper size measuring device is installed,
10 and 11 are cross-sectional views of a mounting table showing a paper size measuring device, and FIG. 12 is a plan view of continuous paper. 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, 22… tractor encoder, 23… detector, 26a, 26b… infeed roller, 27a, 27b… high speed roller, 28…
Blade, 34: Rotary solenoid, 35: Drive pulley, 36: Lifting table, 42: Rotating plate, 43: Notch, 44: Optical sensor

Claims (1)

(57) [Claims] 1. A pair of infeed rollers which are opposed to each other so as to be relatively movable in the direction of contact and separation at a predetermined interval vertically, and are also relatively movable in the direction of contact and separation at a predetermined interval vertically. A pair of high-speed rollers that rotate at a higher speed than the in-feed roller disposed opposite to each other, and cutting assist means that is disposed on each of the pair of rollers and abuts on the continuous paper to give a trigger for cutting. A continuous paper cutting device that moves each of the pair of rollers in the approaching direction, and cuts the continuous paper to a predetermined length by the cutting assisting unit using a difference in transport speed between the pair of rollers and the continuous paper. Rotating drive means for rotating the pair of in-feed rollers and the pair of high-speed rollers; and the pair of in-feed rollers and the pair of high-speed rollers. Along with separately providing contact and separation driving means for moving the rollers in the contact and separation directions, sheet cutting size input means for inputting the cutting size of the continuous paper, and the pair of infeed rollers by the rotation driving means or Processing speed detecting means for detecting the processing speed of the continuous paper accompanying the rotation speed of the pair of high-speed rollers; and the contact / separation drive based on the detection result by the processing speed detecting means and the input result by the paper cutting size input means. Approach timing control means for controlling the timing of moving each of the pair of rollers in the approach direction by means,
Paper thickness input means for inputting the thickness of the continuous paper,
Controlling the timing of moving each of the pair of rollers in the approaching direction by the contact / separation driving means based on the input results by the paper thickness input means and the paper size input means and the detection results by the processing speed detecting means; A continuous paper cutting device characterized by the above-mentioned.