JPH11226899A - Sheet material cutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a paper jam caught by an edge point at the time of cutting in. SOLUTION: A circumferential surface of a rolling roller-shaped member 11 is brought into press contact with a cutter edge point 1a having a cut-in blade to be reciprocated in a cut-in line direction, and a perforation is cut in a sheet material inserted between the circumferential surface of the roller- shaped member 11 and the cutter edge point 1a. After the perforation is cut in, the roller-shaped member 11 is made to run on a stepped part 3b of a protrusive member 3 to move the edge point 1a and the sheet material is separated from the cutter edge point piercing the sheet material for preventing to be caught by the edge point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material cutting apparatus for partially cutting a sheet material such as full width cutting or perforation.

[0002]

2. Description of the Related Art A conventional cutting apparatus of this type is disclosed in, for example, JP-A-62-70170 and JP-A-63-22701.
No. 9298 discloses an apparatus and the like. Some of these devices provide a perforation between both cutting edges by intersecting a straight blade having a notch blade corresponding to a perforation and a smooth straight blade, or a notch corresponding to a perforation. There is a technique in which a roller member having an outer periphery pressed against a straight blade having a blade is rolled to perforate a sheet material inserted between a blade edge and a roller.

In the above-described apparatus in which the straight blades intersect with each other to add a discontinuous cut to the sheet material, if the cut portion is long and the uncut portion is short, the uncut portion is not cut when cutting. Since there is a case where it is not possible to cut the perforation neatly due to the tearing, there is a restriction on the dimension setting of the cut portion and the uncut portion.

[0004] On the other hand, an apparatus using the above roller member cuts a perforation by pressing and rolling the roller member against a blade having a notch blade corresponding to the perforation, and piercing the cutting edge into a sheet material. Therefore, there is no defect as in the case of the straight blades, and the size of the cut portion and the uncut portion can be freely set.

[0005]

However, in the sheet material cutting apparatus using the above-described roller, the cutting edge of the blade is cut into the perforated sheet by pushing the cutting edge of the blade into the sheet material to be processed. The drawback is that the blade remains stuck in the sheet material, and when the cut sheet material is fed, the blade edge is caught and the sheet material to be processed may be torn, or a paper jam may occur, resulting in a functional obstacle. There is. This poses a serious problem especially when used for a line that performs high-speed processing.

In view of the above-mentioned problems, the present invention does not cause functional obstacles such as damage to a sheet to be processed and paper jams even when it is applied to high-speed processing. It is an object of the present invention to provide a sheet material cutting device that operates in a timely manner. That is, a main object of the present invention is to prevent the occurrence of paper jams or the like due to the sheet material being caught on the blade edge after cutting.

As a result of various studies on the above-mentioned problems, the present inventor has found that by providing separation means for forcibly separating the blade tip line of the blade from the sheet material to be processed after the perforation cutting process, the blade edge can be prevented from being caught. Attention was paid to the fact that damage to the sheet material to be processed, paper jams, and the like can be reliably avoided.

The separating means includes a method of moving the blade from the pass line after cutting the sheet material to separate the blade from the sheet material, a method of moving the sheet material from the pass line and separating the sheet material from the blade edge, Alternatively, the cutting edge is separated from the pass line from the beginning, the cutting tool is arranged, the cutting is performed by placing the sheet material at the cutting edge position at the time of cutting, and the sheet material is separated from the cutting edge by returning the sheet material to the pass line after cutting. Focusing on the three methods,
The following invention has been made.

[0009]

According to the present invention, there is provided a sheet material cutting apparatus, comprising: a blade having a cutting edge extending in a cutting line direction; and a roller-like member which rolls by pressing a circumferential surface against the blade edge of the cutting edge. A sheet material cutting device for moving the roller-like member on a blade edge line and cutting the blade edge into a sheet material inserted between the circumferential surface of the roller-like member and the blade edge. When the cutting is completed, there is provided a separating means for separating the cut sheet material from the cutting edge of the blade.

That is, according to the sheet material cutting apparatus of the present invention, for example, in the case of perforation cutting or the like, the sheet material inserted between the perforated blade edge and the rolling roller member is used. Since the cutting is performed by piercing the cutting edge of the perforation, the length of the perforation can be freely selected without disadvantages such as cutting due to the intersection of the straight blades.

Further, since the blade edge and the sheet material to be cut are forcibly separated from each other after the cutting by providing a separating means, the sheet edge does not remain stuck in the sheet material after the cutting and the sheet material is not caught. Paper feeding after cutting can be performed smoothly.

The separating means of the sheet material cutting apparatus according to the present invention may further comprise a step formed in a convex shape at at least one end of the extension of the cutting edge, and wherein the roller-shaped member is provided at the edge. When rolling by pressing, the blade is in the pass line, and when the roller-shaped member rides on the step, the blade is movably supported so that the blade is separated from the pass line; and the blade and the step And a roller-like member that rolls and moves in a substantially straight line while pressing against it, since a reliable effect can be obtained with a simple structure.

In other words, when the separating means is constituted as described above, the roller member is pressed and rolled to the cutting edge in the pass line to cut the sheet material into perforations, and after the cutting is completed, the roller member is further moved. The member rides on a convex step provided on the extension of the cutting edge. Here, since the blade is movably supported so that its blade is separated from the pass line, when the roller member rides on the step, the blade is pushed by the step and the blade is relatively pushed away from the pass line. To move. Thereby, the cutting edge pierced into the sheet material by the cut is separated from the sheet material. The pressure contact between the roller member and the blade can be easily obtained by a spring or the like. Note that the "pass line" of the present invention refers to a pass line through which a sheet material is conveyed, but the "cut edge is in the pass line" does not need to be strictly in the pass line. When the member is pressed and rolled, the cutting edge position may be slightly shifted above or below the pass line.

Further, the roller member is placed at the position where the roller member rides on the step portion during the cutting standby, and when the cutting starts, the roller member moves at a low speed from the step portion to the cutting edge line, and moves at a high speed at the cutting edge line. It is desirable to provide a movement control means for driving the movement in order to perform stable cutting.

That is, in the above configuration, when the roller member at the standby position and on the stepped portion moves to the cutting edge line for cutting, the cutting edge at a position separated from the pass line returns to the pass line. The knife moves. When the roller-shaped member is moved at a high speed in order to shorten the processing time, the cutting process is completed, the roller-shaped member is located at the position above the stepped portion, and the cutting edge of the blade is retreated from the pass line of the sheet material to be processed. When the next cutting process is performed at once, vibration occurs when the cutting edge of the blade returns to the pass line, and when cutting starts before the vibration has converged yet, pressure contact between the cutting edge and the peripheral surface of the roller-shaped member May not be stable, and unevenness may occur at the perforations of the sheet material to be processed.

On the other hand, if the roller member is driven to move at a low speed from the step portion to the cutting edge line and to move at a high speed at the cutting edge line as in the present invention, the cutting edge separated from the pass line can be moved. Since the blade moves so as to gradually return to the pass line, a stable cutting can be performed without vibration of the blade edge as described above. In addition, since the roller member moves at a high speed on the cutting edge line, high-speed cutting is possible.

[0017] Further, the blade having an extension portion of the cutting blade provided with a guide portion substantially flush with the cutting blade, and moving the roller member so that the roller member returns to the guide portion at the time of cutting standby. It is desirable to provide a moving control means for driving for stable cutting.

That is, as described above, when the cutting process is performed at once from the standby state in which the roller-like member is at the position above the step,
In some cases, stable cutting cannot be performed due to vibration of the blade. On the other hand, in this configuration, a guide portion is provided in the extension of the cutting blade, and the roller member that has finished cutting by the movement control means and climbs up to the step portion is returned to the guide portion before the cutting operation by moving. When the cutting is started, the roller edge member starts moving while the cutting edge is stationary on the pass line, so that the blade does not vibrate at the time of starting the cutting, and a stable cutting can be performed.

In order to prevent uneven cutting due to the vibration, it is preferable that the step formed into a convex shape is connected by a curve that is continuous with the cutting blade tip line. If it is made of a material, the impact is easily absorbed. In addition, by providing a means for buffering an impact between the rotating shaft of the roller-shaped member and the peripheral surface, the impact is further buffered, so that a cut can be made quietly and evenly.

According to the above configuration, for example, a width of 500 mm
Even at a cutting speed that gives a high-speed perforation such as 4 widths or more per second to the sheet material, it is possible to reliably dissociate the blade that pierces the sheet material to be processed.
The occurrence of unevenness due to vibration can be prevented.

A detecting means for detecting the end of perforation cutting of the sheet material, and at least one of the front and rear sides of the blade in the sheet feeding direction, the sheet material to be cut when the detecting means detects the end. The same effect as described above can be obtained by providing a separating means for separating from the cutting edge. As this separating means, a sheet material jumping member provided on at least one side before and after in the sheet material feeding direction of the blade, and a sheet to be cut by jumping up the jumping member when the detecting means detects the end. The separating means may be constituted by a flip-up driving means for separating the material from the cutting blade.

According to the present invention, instead of moving the blade, the sheet material is moved so as to be separated from the blade edge. As the sheet material jumping-up member, a movable sheet guide may be provided, and the sheet material may be separated from the cutting blade by jumping up the movable sheet guide according to an end signal of the detection means or mechanical end detection, or Similarly, this can be achieved by providing a movable guide roller and driving the guide roller in the same manner.

A method of cutting the sheet material from the cutting edge by cutting the sheet material at the cutting edge position away from the pass line and returning the sheet material to the pass line after the cutting is performed before and after the cutting tool in the sheet material feeding direction. A pair of sheet material feeding pinch rollers, a cutting tool provided with a cutting edge spaced a predetermined distance from a pass line between the pinch rollers, and a sheet material between the pinch rollers at the time of cutting. Alternatively, the cutting may be performed by providing a rotation control device that drives the pinch roller so as to feed the sheet material by applying tension to the sheet material between the pinch rollers.

That is, in this case, since the sheet material between the pinch rollers is slackened at the time of cutting, the sheet material comes into contact with the blade edge to make a normal cutting, and when the cutting is completed, the sheet material between the pinch rollers is removed. Since the sheet material is returned to the pass line by applying tension, the cut sheet material is separated from the cutting edge.

[0025] Further, the blade is supported so as to be able to press and separate from the roller member by swinging the cutting edge, an urging means for urging the cutting edge in a pressing direction, and a pressing device for adjusting the pressing force. By providing the force adjusting means, it is possible to easily adjust the pressure contact force between the blade edge and the roller-shaped member, and it is possible to widely cope with changes in the thickness and the material of the sheet material to be processed.

The cutting edge angle of the cutting blade is 45 degrees to 9 degrees.
Desirably, it is 0 degrees. If the angle is smaller than 45 degrees, the cutting edge is easily chipped during cutting, and if it is larger than 90 degrees, the sharpness deteriorates. Therefore, 45 to 90 degrees is desirable. Furthermore, if the cutting edge of the blade is made of cemented carbide, and the peripheral surface of the roller member is made of JIS SKD11 or equivalent steel, a durable sheet material cutting device without chipping can be obtained.

[0027] The blade of the sheet material cutting apparatus of the present invention is particularly desirable for perforation cutting having a discontinuous cutting edge having one or more notches. That is, the sheet material cutting device of the present invention can perform continuous cutting, but as described above, the cutting edge such as a perforation is particularly effective because the cutting edge easily penetrates the sheet material and hinders the movement of the sheet material. There is.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting device according to the present invention will be described below with reference to the drawings. FIG. 8 is a perspective view showing a basic form of the cutting device of the present invention. 8, the roller member 11 is rotatably supported by a shaft 12a of a slider 13, and the slider 13 moves along a rail 14.

A blade 1 having a blade edge 1a extending in the cutting width direction is provided with a convex member 3 having a convex step adjacent to both ends. The convex member 3 integral with the blade 1 is supported by a bracket 6, pivotally supported on a support shaft 6 b as a fulcrum, and urged by a spring 8 to press against a roller member 11.

Since the following embodiments are based on this basic type, the operation of the basic type cutting device will be described in a more detailed embodiment described below.

First, a cutting device according to a first embodiment of the present invention will be described. FIG. 1 is a perspective view of a cutting device according to a first embodiment of the present invention, FIG. 2 is a diagram illustrating the operation thereof, and FIG. 3 is a cross-sectional view showing one example of a roller-like member provided in the sheet material cutting device of the present invention. is there.

The first embodiment has a structure in which the blade is moved after the cutting to separate the cutting edge from the cut sheet material. The cutting device shown in FIG. 1 is configured to partially perforate a sheet material having a width equal to or less than a total length including a blade 1 and a guide member 2.

In FIG. 1, a cutting tool 1 having a perforated cutting edge 1a extending in the cutting width direction has at least the cutting edge formed of a cemented carbide, and a guide member 2 continuously adjacent to both ends thereof together with a frame. 4 is fixed. The frame 4 to which the blade 1 and the guide member 2 are fixed is fixed to the base 5 together with the convex member 3 having the convex steps provided on both sides of the frame 4 continuously adjacent to the guide member 2. In addition, the convex member 3 is configured by a curved slope 3a and a step 3b which are continuous with the cutting edge 1a.

The base 5 is swingably supported by a panel 9 by a support shaft 6b of a bracket 6 attached to both ends.
The blade 1, the guide member 2, and the convex member 3 attached to the frame 4 and the base 5 are integrated so as to be able to swing about the support shaft 6b as a fulcrum.

The base 5 is oscillated by a spring 8 suspended between the studs 6a and 7a so that the cutting edge 1a of the blade 1 and the guide surface 2a of the guide member 2 are pressed against the roller member 11. ing. The adjustment plate 7 having a stud 7a implanted at one end is supported by a support shaft 7b at the other end so as to be tiltable to the panel 9, and the support shaft 7b is supported by an adjustment bolt 10 penetrating the panel 9 in contact with the side surface thereof. As a result, the tilting posture can be changed to constitute the pressing force adjusting means. As described above, by adjusting the tension of the spring 8 by tightening and loosening the adjustment bolt 10, the blade 1 a and the roller (roller-like member) 1 are adjusted.
1 can be changed.

The roller 11 is a shaft 1 mounted on a holder 12.
2a rotatably supported. The holder 12 is connected to a timing belt 15 via a clamp member 12b, and a slider 13 fixed to the holder 12 is
It is movably supported. The timing belt 15 is driven by a pulse motor 17 via a pulley 16,
While pressing the roller 11 supported on the shaft 12 a of the holder 12 against the convex member 3, the guide member 2, and the blade 1, the rail 14 is pressed.
, A roller moving means for driving to move in the cutting width direction.

As described above, when the roller 11 running on the cutting edge 1a and finishing the perforation cuts on the step 3b of the convex member 3, the blade 1 tilts and separates from the cut sheet material. This constitutes the separating means.

At the end point of the movement of the roller 11 near both ends of the rail 14, a detection switch (detection means) 20 is provided.
When the cutting is completed and the roller 11 rides on the step 3b of the convex member 3, this is detected and the motor 17 is stopped via the movement control means 21. The end point of the movement of the roller 11 can be determined not by the detection switch but by the number of pulses of the pulse motor 17 by the movement control means 21.

The movement control means 21 can select two types of drive control. First, when the cutting is completed, the roller 11 is stopped at a position where the roller 11 rides on the step portion 3b of the convex member 3 and stands by. When cutting is started, the roller 11 is moved to the guide section 2 at a low speed, and the motor 17 is driven and controlled so as to move on the cutting edge 1a at a high speed from the guide section 2 to cut the sheet material. As a result, it is possible to prevent the blade from vibrating at the time of starting the cutting, perform the stable cutting, and perform the high-speed cutting.

Secondly, the motor 11 is arranged so that the roller 11 stopped at the position where the cutting has been completed and rides on the step 3b of the convex member 3 is further moved to the guide portion 2 so as to wait for the next cutting operation. 17 is driven and controlled. Roller 1
Since 1 moves from the guide portion 2 on the same plane as the cutting edge line, there is no vibration of the cutting edge at the start of cutting, and stable cutting can be performed.

FIG. 3 is a sectional view showing one embodiment of the roller 11. As shown in FIG. 3, the peripheral member 11a forming the peripheral surface of the roller 11 is made of quenched steel corresponding to JIS SKD11, and is formed through a cushion rubber ring 11d fitted in the outer diameter groove of the hub 11b. The inner diameter portion is supported, and the hub 11b is rotatably supported on the shaft 12a via a bearing 11c. One end of the shaft 12a is implanted in the holder 12, and the movement of the bearing 11c in the thrust direction is fixed by the collar 18 and the set screw 18a at the other end.

The roller-shaped member provided with the buffer means having the above-described structure has a cutting edge 1a formed discontinuously corresponding to the perforation.
Can be alleviated when the roller 11 passes through, so that in addition to suppressing unevenness of sharpness, wear and chipping of the cutting edge 1a of the blade 1 and engraving of the peripheral surface 11a of the roller 11 can be reduced. it can. Further, if at least the peripheral surface of the peripheral member 11a of the roller 11 is made of an elastic body such as plastic or rubber, it is effective to suppress the impact generated during the cutting process. If the peripheral surface of the roller 11 is pressed and rolled with the blade edge at a position deviated from the center in the roller width direction, when the peripheral surface is worn, the direction of the roller 11 is changed and replaced with the shaft 12a. Thus, the life of the roller 11 can be doubled, and if the roller 11 is arranged so as to be shifted in the roller width direction, the number of times of use can be further increased.

It is effective that the pressing force between the blade edge 1a and the roller 11 is set to 2 kg or more during cutting to ensure that a predetermined cut is made in the sheet material. Further, setting the blade edge angle of the blade to be larger than 45 ° is effective in preventing chipping of the blade edge due to high-pressure contact during cutting, and it is preferable that the upper limit be 90 ° or less in terms of sharpness.

Hereinafter, the operation of the cutting apparatus having the above configuration will be described with reference to FIG. FIG. 2A shows a cutting standby position,
FIG. 2B shows a cutting start, and FIG. 2C shows a cutting operation.
FIG. 2D is a diagram showing a state in which the cutting is completed and the blade edge is separated from the pass line.

In the standby position shown in FIG.
Reference numeral 1 denotes a step 3b of the convex member 3. As described above, the blade 1, the guide member 2, and the convex member 3 are pivotally supported by the support shaft 6 b and urged by the spring 8 so as to press against the roller 11. It is located away from the line. In this state, the sheet material 19 to be processed is transferred onto the blade 1 and the guide member 2.

When the motor is driven by the movement control means 21 to start cutting, the roller 11 is moved by the timing belt 15 while rotating in the X1 direction in FIG. Then, as shown in FIG. 2B, a sheet material 19 is sandwiched between the blade 1 and the roller 11, and the peripheral surface thereof is
It rotates and moves while being pressed against. At this time, the movement control means 21 controls the roller 11 to move at a low speed from the position of FIG. 2A to the position of FIG. 2B, and to move at a high speed from the position of FIG. You. As a result, the operation of returning the cutting edge to the pass line is performed quietly, so that the cutting edge can be stably cut at high speed without vibration of the cutting edge.

In the above description, the standby position of the roller 11 is set on the step 3b of the convex member 3. However, the roller 11 moved on the step 3b is lowered to the slope 3a of the convex member 3 so as to stand by. It can also be controlled by the movement control means 21.
In this case, since the cutting blade is stationary at the start of cutting, stable cutting can be performed even if the roller 11 moves at high speed.

When the roller 11 is moved while being pressed against the cutting edge as shown in FIG. 2C, the cutting edge 1a having the perforated cutting edge pierces the sheet material to perform the perforation cutting process. Since there is no cutting edge on the guide surface 2a of the guide member 2,
The portion of the sheet material at this position is left uncut without being cut by the roller 11 being pressed and passed.

When the perforations are provided over the entire width of the sheet material, the length of the blade 1 may be set to the entire width and the guide member 2 and the convex member 3 may be arranged. The sheet material to be cut 1
When the pressure contact force between the cutting edge 1a and the roller 11 is changed depending on the thickness and material of the blade 9, the tension of the spring 8 can be changed by tightening and loosening the adjustment bolt 10.

When the roller 11 moves to the position of the left guide surface 2a, the cutting ends. The roller 11 further proceeds to the left slope surface 3a, and is located at the step 3b. Then, the blade 1, the guide member 2, and the convex member 3 are supported by the support shaft 6b via the base 5 so as to be tiltable.
It is tilted downward in the figure, and as shown in FIG.
Moves down from the pass line. As a result, the cutting edge 1a pierced into the sheet material 19 comes off the sheet material 19, so that the transfer of the sheet material becomes free. Sheet material 19
Are sent in a direction perpendicular to the drawing.

When the roller 11 that has been moved to the stepped portion 3b after the perforation is applied to the sheet material is moved in the opposite direction by the movement control means 21, the same operation as described above is performed and the cutting in the return direction is performed. be able to. 2A to 2D are repeated to perforate the sheet material.

As described above, the roller 11 is not moved at a low speed to the guide portion 2a, nor is the roller 11 moved from the position of the step portion 3b to the position of the cutting edge 1a at a stretch without returning to the position of the guide portion 2a and waiting. When the cutting edge is cut, the blade 1 and the like are tilted depending on the moving speed of the roller 1 and vibration is generated when the blade 1a returns to the pass line due to the urging force of the spring 8, and the vibration of the blade 1a is still converged. The cut may start before it is done. For this reason, the cutting edge of the blade and the peripheral surface of the roller-shaped member are not stably pressed against each other,
Non-uniformity may occur in the perforations. In the present invention, this is prevented by the above-described method, and the perforation is reliably provided.

Further, at least the slope portion 3a of the convex member 3
The step portion 3b is preferably made of a material capable of buffering an impact, for example, an elastic material such as plastic or rubber, wood, or the like, in order to prevent the above-mentioned problem due to vibration.

Further, if the roller is rolled to a discontinuous cutting edge corresponding to the perforation during the cutting process, the blade that is tiltably supported may vibrate and uneven cutting may occur. The vibration of the apparatus of the present invention can be reduced by adjusting the adjustment bolt of FIG. 1 to make the pressure between the cutting edge and the roller appropriate. Since the member 11 is used, in addition to suppressing perforation unevenness, wear and chipping of the cutting edge 1a are prevented, and engraving of the peripheral surface 11a of the roller-shaped member 11 is reduced.

Next, the cutting apparatus according to the second and third embodiments of the present invention will be described. In the first embodiment, the blade is moved to separate the cutting edge from the pass line after cutting, whereas in the second and third embodiments, the sheet material is moved and separated from the cutting edge. FIG. 4 shows the second embodiment, and FIG.
Is a perspective view showing the configuration of the cutting apparatus according to the third embodiment, FIG.
FIG. 7 is a diagram for explaining the operation of the cutting devices of the second and third embodiments. The operations of the second and third embodiments are the same and will be described together. Also, the same parts as those in the first embodiment use the same symbols as those in FIG.

In FIGS. 4 and 5, a blade 1 having a perforated blade edge 1a extending in the cutting width direction is integrated with a guide member 2 continuously adjacent to both ends thereof, and is shown by a biasing means (not shown). And the blade edge 1a is
It is designed to be pressed against. This urging means is omitted because the blade may be tilted and urged by a spring as in the first embodiment. The roller 11 rotatably supported by the holder 12 is moved by a timing belt 15 driven by a pulse motor 17 via a pulley 16 and rolls in the cutting width direction while being pressed against the guide member 2 and the blade 1. Is the same as in the first embodiment. A detection switch 20 for detecting the end point of the movement of the roller 11 near both ends of the rail 14.
Is provided.

In the second embodiment shown in FIG. 4, the movable guide plate 23 is provided with a shaft 24 on the side of the blade 1 on which the front sheet material is fed.
Is pivotally supported on a fulcrum, and the tip is flipped up by a flip-up driving means (not shown). In the third embodiment shown in FIG. 5, a movable roller 25 pivotally supported by an arm 26 that can be tilted about a shaft 27 is used instead of the movable guide plate. Conventional equipment driven by electric, mechanical, pneumatic, or the like can be used as the flip-up driving means, and a detailed description thereof will be omitted.

Next, the operation of the cutting devices of the second and third embodiments will be described with reference to FIG. The sheet material fed from the roll paper holder 30 by the pinch roller 32 passes over the fixed guide roller 31 and is sent out in contact with the cutting edge 1a. Then, it stops at the designated location and a cut command is issued. Then, the roller 11 located at the guide position at one end rolls by pressing against the guide member 2 and the cutting edge 1a with the sheet material 19 interposed therebetween, and travels, and partially cuts a perforation at a portion contacting the cutting edge 1a. When the roller 11 reaches the other end after the cutting is completed, the detection switch 20 is operated to generate a signal to a not-shown flip-up driving means. In response to this signal, the flip-up driving means flips up the movable guide plate as shown by a chain line in FIG. As a result, the sheet material pierced into the blade edge by the perforation cut is removed from the blade edge, and can be transported without any obstacle. If the jumping-up section is a movable guide roller as in the cutting device according to the third embodiment shown in FIG. 5, the sheet material feeding resistance in the jumped-up state can be reduced.

FIG. 7 is an explanatory view of a cutting device according to a fourth embodiment. In the fourth embodiment, the cutting edge is disposed at a position away from the pass line, and after cutting, the sheet material is returned to the pass line, thereby separating the cut sheet material from the cutting edge.

In the fourth embodiment, pinch rollers 28 and 29 are provided before and after the cutting tool 1, and the cutting tool 1 has a cutting edge 1a separated from a sheet material feeding pass line. The sheet material 19 is sent out under tension between the pinch rollers 28 and 29 before and after the blade. Then, when the cutting position is reached, the pinch roller 28 after the previous pinch roller 29 stops
Stops. As a result, the sheet material 19 sent along the pass line away from the cutting edge 1a hangs down and comes into contact with the cutting edge. In this state, the roller 11 is made to travel on the sheet material to perform perforation cutting. When the cutting is completed, the sheet material is sent out by driving the pinch roller 28 after driving the pinch roller 29 before. Then, tension is applied to the sheet material between the pinch rollers 28 and 29, so that the sheet material pierced by the cutting edge 1a comes off from the cutting edge and can move freely, as shown by the chain line in FIG. This operation is controlled by the rotation control device input to the movement control means 21.

As described above, a main object of the present invention is to prevent the occurrence of paper jams or the like due to the sheet material being caught on the blade edge after cutting. On the other hand, according to the cutting device of the present invention, the circumferential surface of the roller-shaped member is pressed against the perforated cutting edge and rolled to cut the perforation into the sheet material. Since the separating means for separating the blade edge of the pierced blade is provided, it is possible to prevent the blade edge from being caught and to reliably avoid damage to the sheet material to be cut, paper jam, and the like.

According to the present invention, as the separation means, in the first embodiment, the blade is moved from the pass line to separate the sheet material from the cutting edge, and in the second and third embodiments, the sheet material is moved from the pass line. In the fourth embodiment, the cutting edge is separated from the pass line, and the cutting tool is disposed at the cutting edge position away from the pass line, and the sheet material is cut into the pass line after cutting. By returning the sheet material, the sheet material is separated from the cutting edge, and in any case, the main object of the present invention can be reliably achieved.

Although the above embodiment has been described with reference to the cutting device for making a discontinuous perforation, the present invention can also be applied to a cutting device for making a continuous cut partially instead of at the perforation.

[0064]

The sheet material cutting apparatus according to the present invention described above cuts the sheet material inserted between the cutting edge of the blade and the roller-shaped member which rolls by pressing against the cutting edge. In the sheet material cutting device, the cutting edge of the blade can be reliably released from a state in which the blade edge of the blade is slammed into the sheet material at the time of cutting, so that the sheet material to be cut can be damaged and the function of paper jam can be improved. It is possible to prevent the occurrence of a target failure and to operate stably and reliably even in the processing of perforating at high speed, so that excellent processing performance can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sheet material cutting device according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation of the sheet material cutting device according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing one embodiment of a roller-shaped member of the sheet material cutting device of the present invention.

FIG. 4 is a perspective view of a sheet material cutting device according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a sheet material cutting device according to a third embodiment of the present invention.

FIG. 6 is a diagram illustrating an operation of the sheet material cutting device according to the second embodiment of the present invention.

FIG. 7 is a diagram illustrating the operation of a sheet material cutting device according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a basic form of the sheet material cutting device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 blade 1a blade 2 guide member 2a guide surface 3 convex member (separating means) 3a sloped portion 3b stepped portion 4 frame 5 base 6 bracket 6a stud 6b support shaft 7 adjusting plate 7a stud 7b support shaft 8 spring (biasing device) 9 Panel 10 Adjustment Bolt (Pressing Force Adjusting Means) 11 Roller (Roller Member) 11a Peripheral Member 11b Hub 11c Bearing 11d Buffer Rubber (Buffer Means) 12 Holder 12a Shaft 12b Clamping Member 13 Slider 14 Rail 15 Timing Belt 16 Pulley 17 Pulse motor 18 collar 18a set screw 19 sheet material 20 detection switch 21 movement control means (rotation control device) 23 movable guide plate 24 axis 25 movable guide roller 26 arm 27 axis 28 pinch roller 29 pinch roller 30 roll paper holder 31 Fixed guide roller 32 Pinch roller

Claims (14)

[Claims] 1. A cutting tool having a cutting edge extending in a cutting line direction, and a roller-shaped member that rolls by pressing a circumferential surface against the cutting edge of the cutting edge, and moves the roller-shaped member on the cutting edge line. In the sheet material cutting device for cutting the blade edge into the sheet material inserted between the circumferential surface of the roller-shaped member and the blade edge, when the cutting is completed, the cut sheet material and the blade edge of the blade are cut. And a separating means for separating the sheet material. 2. The method according to claim 1, wherein the separating means has a step formed in a convex shape at at least one end of the extension of the cutting edge, and when the roller-shaped member rolls by pressing against the cutting edge. The cutting edge is in the pass line, and when the roller-shaped member rides on the step portion, the cutting edge is movably supported so as to be separated from the pass line, and substantially straight while being pressed against the cutting edge and the step portion. The sheet material cutting device according to claim 1, wherein the sheet material cutting device is configured by a roller-shaped member that rolls and moves. 3. The roller member is placed at a position where the roller member rides on the step during standby for cutting, and when cutting starts, the roller member moves at a low speed from the step to the cutting edge line, and moves at a high speed at the cutting edge line. 3. The sheet material cutting device according to claim 2, further comprising a movement control unit that moves and drives. 4. A blade provided with a guide portion substantially on the same plane as the cutting blade at an extension of the cutting blade, and moving the roller member so as to return the roller member to the guide portion during cutting standby. 3. The sheet material cutting device according to claim 2, further comprising a movement control means for driving. 5. The sheet material cutting apparatus according to claim 2, wherein the step formed in the convex shape is connected by a curve that is continuous with the cutting edge. 6. The sheet material cutting apparatus according to claim 2, wherein the step formed into a convex shape is made of a plastic material. 7. A cutting device comprising: detecting means for detecting the end of cutting; and separating means for separating the sheet to be cut from the cutting edge when the detecting means detects the end of cutting. 2. The sheet material cutting device according to 1. 8. A sheet material jumping member provided on at least one side before and after the blade in the sheet material feeding direction, and a sheet material to be cut by jumping up the member when the detecting means detects the end. The sheet material cutting apparatus according to claim 7, wherein the separating means is constituted by a flip-up driving means for separating the sheet from the cutting blade. 9. A pair of sheet material feeding pinch rollers provided before and after the blade in the sheet material feeding direction, and a cutting edge provided at a predetermined distance from a path line between the pinch rollers. A knife, and a rotation control device that drives the pinch roller so that the sheet material between the pinch rollers is slackened at the time of cutting, and tension is applied to the sheet material between the pinch rollers when the cutting is completed to feed the sheet material. The sheet material cutting device according to claim 1, wherein: 10. A blade that is swingably supported so as to be able to press and separate the blade tip and the roller-like member, biasing means for biasing the blade tip in a direction of pressing, and adjusting the pressing force. The sheet material cutting device according to any one of claims 1 to 9, further comprising a pressing force adjusting unit that performs the pressing operation. 11. The blade edge angle of the blade is 45 to 9 degrees.
The sheet material cutting device according to any one of claims 1 to 10, wherein the angle is 0 degree. 12. The sheet material cutting apparatus according to claim 1, wherein said roller-shaped member includes means for buffering an impact between a rotation shaft thereof and a peripheral surface thereof. 13. The cutting edge of the cutting tool is made of cemented carbide,
13. The sheet material cutting device according to claim 1, wherein a peripheral surface of the roller member is made of JIS SKD11 equivalent steel. 14. The sheet material cutting apparatus according to claim 1, wherein the cutting tool has a discontinuous cutting edge having one or more notches.