JPH11320485A - Method and device for controlling direction of cutting blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a cutting blade such that the direction of the cutting edge of the cutting blade when only the recording paper of a roll paper for a tack paper sheet is half-cut is pointed in the cutting direction. SOLUTION: The size of the mold release paper 4 of a roll 2 is more increased in size by H3 than the width size of a recording paper 3 temporarily stuck thereon, the mold release paper is extended externally of one side edge of the recording paper 3, and the part forms an adjustment part 4a by which the mold release paper 4 is exposed. The offset cutting edge 43a of the cutting blade at the lower end of a cutter shaft 40 rotatably mounted on a cutter holder is brought into contact with the upper surface position separated away from the recording paper 3 in the adjustment part 4a, and when, with this state, the cutter holder is moved in the direction to be cut, the cutter shaft 40 is rotated around a rotation central line and the cutting edge 43b is pointed in the direction to be cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade direction control method and a control apparatus applied to a tack paper manufacturing apparatus for printing while sending roll paper and cutting the tack paper into a form of tack paper such as a label. .

[0002]

2. Description of the Related Art An object to be cut such as a label sheet, a pattern sheet, or a strip coat sheet is supplied as roll paper,
As a method of controlling the direction of the cutting blade in the half-cut state in an arbitrary direction such as a substantially rectangular shape in a plan view while transporting the roll paper from the start of cutting, a conventional cutter holder is used. It has been well known that the center of rotation of a rotatable cutter shaft mounted on a shaft and the cutting edge of a cutting blade are eccentric to utilize a caster action. According to this technique, when the cutting edge of the cutting blade is directed in the moving direction of the cutter holder, even if the cutter holder is moved linearly after the cutting edge lands on the surface of the workpiece, the cutting edge is not eccentric. Since it moves linearly after drawing an arc motion with the radius as the amount, the corners cannot be cut cleanly when cutting at an acute angle, and especially the recording paper is temporarily wrapped on the top surface of the release paper with a pressure sensitive adhesive etc. In the case of the sticky object, there is a problem that the recording paper is peeled off from the release paper at the corners.

In order to solve this problem, the direction of the cutting edge is adjusted by moving the cutter shaft in the same direction as the direction to be cut in a state where the cutting edge of the cutting blade is once brought into contact with the surface of the dummy workpiece. Later, it is conceivable to perform the cutting operation by moving the cutter shaft on the true workpiece, but in this case, a dummy workpiece and a true workpiece must be prepared. Therefore, there is a problem that the whole apparatus is bulky.

As another prior art, for example, Japanese Patent Laid-Open No.
No. 269,694 discloses that a permanent magnet is fixed to one side of a cutter shaft, while a plurality of (in the embodiment, four places) are provided in a cutter holder on the outer periphery side of the cutter shaft along a circumference thereof. It has been proposed to dispose an electromagnetic coil, and to turn on one of the electromagnetic coils to rotate the cutter shaft so that the edge of the cutting blade is directed in a desired direction by the magnetism.

[0005]

However, if the number of the electromagnetic coils is small, the right and left directions cannot be minutely changed, and a permanent magnet is fixed to one side of the cutter shaft. Since an electromagnetic coil is arranged in a ring shape on the outer peripheral side and a sensor is required for detecting the direction, there is a problem that the cutter holder becomes large, the sensor becomes complicated, and the cutting device becomes expensive. There was also the problem of becoming.

An object of the present invention is to provide a method and a control device for controlling the direction of a cutting blade with a simple configuration.

[0007]

According to a first aspect of the present invention, there is provided a method for controlling the orientation of a cutting blade.
At the lower end of the cutter shaft rotatably supported around the axis with respect to the cutter holder, a cutting edge is provided with a cutting blade eccentric with respect to the rotation center line, and the cutter holder and the object to be cut are relatively positioned. A method for controlling the orientation of a cutting blade for cutting into an arbitrary shape by moving the object, wherein the object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered on the upper surface thereof, and the recording paper is cut from an edge of the recording paper. A release paper is formed as wide as appropriate, and the cutting edge of the cutting blade is brought into contact with the upper surface of the release paper without the recording paper to relatively move the cutter holder and the workpiece in a direction to be cut. It is characterized by the following.

[0008] The invention described in claim 2 is the first invention.
In the method for controlling the orientation of the cutting blade described in the above, the moving direction of the object wound in a roll paper shape and the moving direction of the cutter holder intersect each other in plan view, and either or one of the cutter holder and the object to be cut Is controlled to be moved. The direction control device of the cutting blade according to the third aspect of the present invention includes a winding support portion that supports the object to be cut wound in the form of a roll paper, and a conveying device that unwinds and transports the material from the winding support portion. A cutting section for supporting a cutter holder so as to reciprocate in a direction perpendicular to the transport direction so as to cut the object to be cut into a predetermined shape, wherein the cutter holder is rotatably supported around an axis. At the lower end of the cutter shaft, a cutting edge is provided with a cutting blade eccentric with respect to the rotation center line, and the object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered on the upper surface thereof, The edge of the recording paper in the transport direction is formed with an appropriate width of release paper as appropriate, and is an adjusting unit for adjusting the direction of the cutting edge of the cutting blade.

[0009]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a tack paper printing apparatus 1 to which the present invention is applied, FIG. 2 is a side sectional view, FIG. 3 is a side view of a lifting mechanism of a cutter holder,
FIG. 4 is a perspective view of a roll paper for tack paper, FIG. 5 is a side sectional view of a cutter holder, and FIG. 7 is an enlarged side view of a main part of a cutting blade when half cutting is performed.

As shown in FIG. 4, a roll paper 2 as an object to be cut used in a tack paper printing apparatus 1 has an adhesive such as a pressure-sensitive adhesive on the back of a band-shaped recording paper 3 printable on the front. And the adhesive layer is adhered to the surface of the strip-shaped release paper 4. Usually, the roll paper 2 is wound around a paper tube 5. The recording paper 3 may be glossy paper or synthetic resin film other than plain paper. Then, in the roll paper 2 used in the present invention, as shown in FIG. 4, the width dimension H1 of the release paper 4 is appropriately increased by the dimension H3 from the width dimension H2 of the recording paper 3,
The recording paper 3 is temporarily attached so as to protrude laterally from the left or right side edge by the dimension H3, and the width dimension H
3 is a cutting edge 43 of a cutting blade 43 to be described later.
An adjusting unit 4a for controlling the direction of 3b.

On one side of the left and right chassis frames 6 and 6 in the tack paper printing apparatus 1, the roll paper 2 together with the paper pipe 5 can be exchanged, and the paper pipe 5 of the roll paper 2 is rotatably pivoted. A pair of left and right support means 7a, 7b having a structure capable of supporting
Is arranged. In this case, the pair of left and right support means 7
a and 7b are inserted from the outside of each of the chassis frames 6 and 6 and inserted into the inner diameter portions of both ends of the paper tube 5 to rotatably support the winding portion 2a of the roll paper 2; What is necessary is just to pull out a pair of support means 7a, 7b outside each chassis frame 6,6.

A pair of left and right swing arms 10, 10 is supported by a connecting frame 8 connecting the pair of chassis frames 6, 6 via a horizontal shaft 9. A pressing drive roller 11 rotatably supported at the leading end of the roller 10 is provided with an urging spring (not shown) so as to abut the outer peripheral surface of the roll paper 2 from below the winding portion 2a. It is biased upward to rotate.
Then, the pressing drive roller 11 is rotationally driven via a gear transmission mechanism 22 to be described later, and
It is configured to be conveyed (sent out) in the direction of the printing unit 12 composed of the platen roller 14 and the like, and to be rewound for half-cut, which will be described later. In this embodiment, the print head 13 uses a horizontally long line-type thermal head substantially equal to the width of the roll paper 2, and uses thermal paper as the recording paper 3.

As other embodiments of the print head 13, an ink jet type or a type of printing by a dot pin or a thermal head via an ink ribbon may be used. Roll paper 2 rather than printing unit 12
On the downstream side of the conveyance, a cutting unit 15 including a cutting unit bed 16 on the lower surface and a cutter holder 17 that can reciprocate in the width direction of the roll paper 2 above the cutting unit bed 16 is arranged. The cutting section 15 has a driving roller 19 and a pressing pinch roller supported by the tip of a swing lever 18 urged downward by a biasing spring 21 downstream of the cutting section bed 16 in the conveyance direction. 20 are disposed.

A first drive motor 23 such as a forward / reverse rotatable step motor fixed to the inside of the one chassis frame 6 (in the embodiment, the chassis frame 6 on the right side in the transport direction in FIG. 1) is used to drive the chassis frame 6 A transmission shaft 24 is driven via a first gear transmission portion 22a composed of a plurality of gear groups arranged outside, and a second gear transmission portion 22b disposed on the one swing arm 10 is driven from the drive shaft 24. The pressing drive roller 11 is driven through this. On the other hand, the platen roller 14 and the drive roller 19 are driven to rotate in the same direction from the first drive motor 23 via the third gear transmission 22c.

When the first drive motor 23 rotates forward (counterclockwise rotation in FIG. 2), the pressing drive roller 11 rotates clockwise, and the platen roller 14 and the drive roller 19 rotate counterclockwise. By letting
The roll part 2a of the roll paper 2 is rotated counterclockwise to convey the paper in a direction in which the paper is fed. Conversely, the first drive motor 2
When the roller 3 rotates in the reverse direction (clockwise rotation in FIG. 2), the pressing drive roller 11 rotates counterclockwise, and the platen roller 14 and the drive roller 19 rotate clockwise, thereby forming the winding portion 2a of the roll paper 2. Is rotated clockwise to rewind the paper.

On the other hand, the carriage 26 to which the cutter holder 17 is fixed is mounted on the left and right chassis frames 6, 6 so that the cutter holder 17 can be reciprocated in the width direction perpendicular to the transport direction of the roll paper 2. The timing belt 28 wound around the pair of pulleys 27 and 27 is connected to the chassis frame 6.
A fourth gear transmission unit including a plurality of spur gears and bevel gears from a second drive motor 29 such as a forward / reverse rotatable step motor fixed outside the chassis frame 6 on the right side in the transport direction in FIG. The power is transmitted through the first pulley 30 to drive the one pulley 27.

Further, as shown in FIGS. 1 and 3, the base end of the carriage 26 is slidably fitted on a main guide shaft 31 fixed to the left and right chassis frames 6, 6. Both sides of the auxiliary guide shaft 32 slidably penetrating the middle part are attached to rotating arms 33, 33 provided on the left and right chassis frames 6, 6, and are connected to one end of the auxiliary guide shaft 32. It is connected to the output shaft 35a of the first electromagnetic solenoid 35 via the operation link 34, and the lower end (the side where the cutter projects) of the cutter holder 17 is pressed against the upper surface of the cutting section bed 16 by a biasing spring (not shown). Being energized. When the first electromagnetic solenoid 35 provided on the outer surface of the other chassis frame 6 is turned on (excited), the output shaft 35a protrudes to move upward in FIG.
Further, the carriage 26 is rotated upward through the auxiliary guide shaft 32 so that the lower end of the cutter holder 17 is separated from the upper surface of the roll paper 2 which is the object to be cut.

The swing arm 18 can also be vertically swung by a second electromagnetic solenoid (not shown). Next, the configuration of the lifting / lowering adjusting device for the cutting blade will be described. As a first embodiment, a cutter holder 17 shown in FIGS.
A round rod-shaped cutter shaft 40 having a diameter of 2R (R is a radius) is inserted into the lower guide cylinder portion 17a so as to be vertically movable and rotatable around an axis through bearings 41 and 42 at upper and lower positions. ing. At the lower end of the cutter shaft 40, a cutting blade 43 as shown in FIG. 7 is integrally provided. In the embodiment, the cutting edge 43a of the cutting blade 43 is displaced from the axis 40a of the cutter shaft 40 by a distance L1 on the downstream side with respect to the traveling direction of the cutter shaft 40 (indicated by an arrow). The load is applied to the center of the upper end surface (horizontal plane) of the cutter shaft 40 and pressed against the object to be cut. Therefore, when the advancing direction of the cutter shaft with respect to the roll paper 2 which is the object to be cut changes left and right due to the shift of the cutting edge 43a, the direction of the blade 43b of the cutting blade 43 can always be directed to the advancing direction. Things. As another embodiment, a separate cutter (cutting blade) may be detachably (replaceably) mounted.

As shown in FIGS. 5 and 6, the cutter shaft is housed in a chamber 44 surrounded by a hollow case portion 17b provided continuously on the guide tube portion 17a and a lid portion 17c covering the upper side thereof. The upper end face (horizontal end face) of 40 is faced. In the chamber 44, a large-diameter first steel ball 45 and a small-diameter second steel ball 45 are provided as selection means for selecting the descending amount of the cutter shaft 40.
The steel balls 46 are supported at appropriate distances L2 in the supporting recesses of the horizontal support 47 as the actuating means, with their lower ends exposed downward so that they cannot fall off. This horizontal support 47
The first steel ball 45 and the second steel ball 46 are fitted on the upper surface of the cover member 48 so as to be immovable up and down.
Fix at 9.

The horizontal support 4 as the operating means is provided.
Reference numeral 7 denotes a guide groove 50a, 50b formed in a substantially rectangular plate shape in a plan view, and formed by cutting out the opposing side surfaces of the hollow case portion 17b so that both ends of the horizontal support member 47 protrude out of the cutter holder 17. I'm facing. A convex curved portion 51 is formed on the upper surface of the cover body 48, and the lower end of the hemispherical shape of the adjusting screw 52 screwed to the lid 17 c is configured to contact the upper surface of the cover body 48. It should be noted that the horizontal support 47 as the operating means, and thus the large-diameter first steel ball 45 and the small-diameter second steel ball 46 as the selection means as the selection means, and for adjusting the vertical position (height) of the installation. A stopper screw ring 53 is disposed on the upper surface of the lid 17c so that the adjustment screw 52 does not rotate carelessly.

Further, a pair of elastic spring pieces 54, 5 extending downward and convexly curved from both left and right sides of the cover body 48.
4, 55, 55 are slidably pressed against the bottom surface of the hollow case portion 17b. In addition, a sliding contact cover 56 that is in sliding contact with the surface of the roll paper 2 that is the object to be cut is screwed to the lower end of the guide cylindrical portion 17a. Next, the operation of the tacky paper printing apparatus 1 will be described. The roll paper 2 is set at a predetermined position of the printing apparatus 1, and the leading end of the roll paper 2 is
And power is turned on (not shown).
Printing is started after image data such as characters and symbol images created in advance in the printing apparatus 1 is transmitted to an external device such as a personal computer (PC) (not shown) or a storage unit (memory) in the controller of the printing apparatus 1. When the first drive motor 23 rotates forward, the pressing drive roller 1 pressing the winding portion 2a from below toward the outer peripheral surface is driven.
1 is rotated forward to advance the roll paper 2 between the platen roller 14 and the print head 13, while developing the image data and sending character data to the print head 13 which is a thermal head in the case of characters. By driving a predetermined heating element, a character 56 (see FIG. 4) is printed on the recording paper 3 which is a thermal paper.
Etc. are printed. When the leading end of the roll paper 2 reaches the pinch roller location in the cutting section 15, the roll paper 2 sandwiched between the drive roller 19 and the pressing roller 20 is transported leftward in FIG.

As shown in FIG. 4, only the portion of the recording paper 3 on the roll paper is cut by a half-cut line 58 so as to form a tack paper 3a (see FIG. 4) having a planar shape such as a predetermined substantially rectangular or elliptical shape. To cut (half cut) the cutter 43
Is lowered to the half-cut position, and the cutter holder 17
And the roll paper 2 are relatively moved in the XY directions and cut. To this end, as described later, the cutter holder 17 may be moved closer to the chassis frames 6 and 6 to set the depth dimension of the cutting blade 43 protruding from the lower end surface of the cutter holder 17.

Next, a method for controlling the direction of the cutting edge 43b of the cutting blade 43 in advance so as to face the cutting direction will be described. First, the second drive motor 29 is operated to move the carriage 26 along the X direction (left-right direction) in FIG. 4, and the position of the adjustment section 4 a where the release paper 4 is exposed upward in the roll paper 2. So that the cutting edge 43a of the cutter 43 is positioned above the upper edge of the cutter 43. Next, the first electromagnetic solenoid 35
Is turned off, the cutter holder 17 is lowered together with the carriage 26 via the operating link 34, the rotating arm 33 and the auxiliary guide shaft 32, and the cutting edge 43a of the lower cutting blade 43 is brought into contact with the upper surface of the adjusting portion 4a. (Refer to the state shown by the two-dot chain line in FIG. 7).

In this state, the cutter holder 17 and the roll paper 2 as the object to be cut are relatively moved in the cutting direction, so that the cutting edge 43 as shown by the solid line in FIG.
Control for turning the direction of b to the cutting direction can be realized. In this case, it is preferable that the position where the cutting edge 43a first comes into contact is as far away from the edge of the recording paper 3 as possible. This is because, as described later, in order to change the direction of the cutting blade 43, the cutting blade 43 is
This is because it is necessary to horizontally move the cutter shaft 40 by a predetermined distance in a state where the cutter shaft 40 is kept in contact with the cutter shaft 40.

For example, when it is desired to make a half cut parallel to the Y direction in FIG. 4, the first drive motor 23 is rotated forward or backward to convey the roll paper 2 in the Y direction (front-back direction). When the half cut is performed obliquely or in an arc shape with respect to the transport direction of the roll paper 2, the first drive motor 23 and the second drive motor 29 are simultaneously operated. The inclination angle with respect to the direction can be adjusted arbitrarily. Further, in order to cut the roll paper 2 in a direction orthogonal to the transport direction, the first drive motor 23 is stopped, and only the second drive motor 29 is operated to move the carriage 26 in the X direction (right and left) in FIG. Direction).

In any case, the cutting edge 43a is offset by a distance L1 from the rotation center line 40a of the cutter shaft 40, and when viewed from the top, passes through the rotation center line 40a from the cutting edge 43a to one of the cutter shafts 40a. Since the cutting edge 43b is formed to extend in the circumferential direction of the cutter shaft 40, as the cutter shaft 40 (the cutter holder 17) moves relatively,
The cutting edge 43a is dragged by the frictional resistance with the surface of the object to be cut (release paper 4), and the cutter shaft 40 rotates around its rotation center, and the cutting edge 43a is located on the rear side in the relative movement direction. That is, the cutter shaft 40 rotates so that the cutting edge 43b is directed in the relative movement direction.

In this case, when the cutting edge 43b is 180 degrees opposite to the traveling direction (direction to be cut), the cutting edge 4b
In order for 3b to move in the traveling direction, the cutter shaft 4
The minimum distance required to move 0 is 2πR. Therefore, the width dimension H3 of the adjusting section 4a may be 2πR or more. Thus, the cutting edge 43b of the cutting blade 43 is
Is set in advance, and then the cutting edge 43a is applied to the cutting start position on the recording paper 3 on the roll paper 2 to relatively move the cutter holder 17 and the roll paper 2 to obtain an arbitrary shape. Can be cut at the half cut line 58 of FIG.

When the roll paper 2 is cut by full cutting, the projecting amount of the cutting blade 43 is made to protrude as required for all cutting, and the first electromagnetic solenoid 35 is turned off, as will be described later.
Then, the cutter holder 17 is lowered on the cutting section bed 16, the cutting edge 43 a is applied to the cutting start position on the recording paper 3 of the roll paper 2, and the cutter holder 17 and the roll paper 2 are relatively moved. By doing so, it is possible to perform the entire cut in any direction (the recording paper 3 and the release paper 4 are cut at the same time).

As described above, since the pressing drive roller 11 presses against the outer peripheral surface of the winding portion 2a of the roll paper 2 and is driven to rotate, if the rotation speed of the pressing driving roller 11 is constant, the winding portion 2a Can be sent out at a constant peripheral speed regardless of the size of the diameter and can be rewound and conveyed. Further, since the pressing drive roller 11 presses the winding portion 2a of the roll paper 2 from below, if the roll paper 2 is replaced from above the chassis frames 6, 6, the pressing drive roller 11 will hinder the replacement operation. There is nothing.

Further, when the first driving motor 23 is driven, the driving roller 19 in the pinch roller pair and the pressing driving roller 11 for the winding portion 2a rotate in the same direction in synchronization with each other. If the rotation peripheral speeds of the roll paper 2 are set to be the same, the roll paper 2 does not loosen during the feeding and rewinding conveyance.

Next, the operation of adjusting the height of the cutting blade 43 for half-cutting and full-cutting by moving the cutter holder 17 will be described. For example, first, as shown in FIG.
Is set at a position where the left end of the horizontal support 47 as an operating body projects greatly so that the upper end of the cutter shaft 40 is pressed. This state is the entire cutting position, in which the cutting edge 43a of the cutting blade 43 is greatly lowered so as to reach the surface of the cutting section bed 16, and the release paper 4 and the recording paper 3 can be cut at once. . In this state, the second drive motor 29 is rotated forward to move the cutter holder 17 to the left in FIGS. 5 and 6 via the timing belt 28, and to the left chassis frame 6 as shown in FIG. Press the forward end (left end) of the horizontal support 47 in the forward direction,
If the horizontal support 47 is moved to the right relative to the cutter holder 17, the large-diameter first steel ball 45 is moved to the cutter shaft 40.
The second steel ball 46 having a small diameter presses the upper end of the cutter shaft 40 instead of the upper end of the cutter shaft 40, and the cutter shaft 40 rises by a difference in radius between the first steel ball 45 and the second steel ball 46. Thus, the user can select the half-cut position.

In this case, the elastic spring pieces 54 and 55
The support 47 and the cover 48 are urged upward,
The upper surface of the cover 48 is adjusted by the adjusting screw 52 to the cutter shaft 40.
The maximum height of the cut is regulated, so that the depth of all cuts and half cuts does not vary. To change from the half cut position to the full cut position, in FIG.
The cutter holder 17 is moved rightward, and the forward end (right end) of the horizontal support 47 in the forward direction is pressed against the right chassis frame 6, and the horizontal support 47 is moved against the cutter holder 17.
Is relatively moved to the left, the small-diameter second steel ball 46 is disengaged from the upper end of the cutter shaft 40. Instead, the large-diameter first steel ball 4 is moved.
5 presses the upper end of the cutter shaft 40, and the first
The cutter shaft 4 has a radius difference between the steel ball 45 and the second steel ball 46.
The value of 0 is lowered, and all the cutting positions can be selected.

As described above, when the vertical movement of the cutter shaft 40 is selected, as the horizontal support 47 moves left and right, the lower end of the adjusting screw 52 climbs over the convex curved portion 51 on the upper surface of the cover 48. Since the horizontal support 47 does not inadvertently shift left and right due to the resistance, the selected height does not inadvertently fluctuate. Also, the horizontal support 47
As shown in FIG. 6, the front end face (rear end face) of the cover body 48 is located on the inner wall surface of the hollow case portion 17b at the maximum left and right movement positions of the horizontal support 47, as shown in FIG. You may comprise so that contact may restrict | limit a movement.

When the roll paper 2 is not cut,
The cutter holder 17 may be kept on standby at one corner of the cutting section bed 16 where the roll paper 2 does not pass.
By turning on (exciting) the electromagnetic solenoid 35, the entire cutter holder 17 may be floated so as to be largely separated from the upper surface of the cutting section bed 16. The present invention cuts not only the tacking paper printing apparatus 1 using the roll paper 2 but also the entire outer shape of a thick paper in a predetermined plan view shape, and half-cuts an appropriate position in the entire cut inside to bend. Needless to say, the present invention can also be applied to a cutting device for producing a packaging box or the like.

Instead of moving the cutter holder by the carriage, the cutting section bed on which the object to be cut is mounted may be moved in the XY directions on a horizontal plane, or the cutter holder may be moved in the XY directions in plan view. It may be.

[0036]

As described in detail above, the method for controlling the orientation of the cutting blade according to the first aspect of the present invention includes a method for controlling the orientation of the cutter blade at the lower end of the cutter shaft rotatably supported around the axis with respect to the cutter holder. A cutting edge is provided with a cutting blade eccentric with respect to the rotation center line, a cutting blade orientation control method for cutting into an arbitrary shape by relatively moving the cutter holder and the workpiece, The object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered to the upper surface thereof, the release paper is formed as wide as appropriate from the edge of the recording paper, and the cutting edge of the cutting blade is made of the recording paper. The cutter holder and the object to be cut are relatively moved in a direction in which the cutter holder and the object to be cut are brought into contact with the upper surface of the release paper.

As described above, since the position of the cutting edge of the cutting blade is eccentric with respect to the rotation center line of the cutter shaft, the cutting edge of the cutting blade is kept in contact with the upper surface of the release paper without recording paper. When the cutter blade is moved, the cutter shaft is rotated by frictional resistance between the cutting edge and the release paper, and the blade edge of the cutting blade can move in the moving direction only by moving the cutter shaft by a predetermined distance. In this case, since a part of the release paper that is eventually unnecessary is used for adjusting the direction of the cutting blade, a separate dummy paper is not required, and the cutting direction near the recording paper that is a true object to be cut is used. Therefore, there is an effect that the control of the direction becomes extremely simple.

The invention described in claim 2 is the first invention.
In the method for controlling the orientation of the cutting blade described in the above, the moving direction of the object wound in a roll paper shape and the moving direction of the cutter holder intersect each other in plan view, and either or one of the cutter holder and the object to be cut Is controlled so as to move the cutting blade, so that the direction of the cutting edge of the cutting blade becomes arbitrary in any direction of 360 degrees in plan view simply by adjusting the moving speed of the cutter holder and the workpiece. And the control becomes extremely simple.

According to a third aspect of the present invention, there is provided a cutting blade direction control device for supporting an object wound in a roll paper shape, and transporting the object while unwinding from the wound supporting portion. A cutting section for supporting the cutter holder so as to be able to reciprocate in a direction orthogonal to the transport direction in order to cut the object to be cut into a predetermined shape, wherein the cutter holder includes:
At the lower end of the cutter shaft supported rotatably around the axis,
The cutting edge is provided with a cutting blade eccentric with respect to the rotation center line, and the object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered on the upper surface thereof, along a conveying direction of the recording paper. On the edge, the release paper is formed as wide as appropriate and the adjusting portion adjusts the direction of the cutting edge of the cutting blade, so that only the object to be cut or the cutter holder is relatively moved at the position of the adjusting portion. In addition, the direction of the cutting edge of the cutting blade can be easily adjusted arbitrarily, and the recording paper, which is the true object to be cut, is arranged adjacent to the adjustment section, so that the cutting work can be done quickly and the equipment is extremely This has the effect of being compact.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a printing apparatus.

FIG. 2 is a schematic side view of the printing apparatus.

FIG. 3 is a side view of the lifting device of the entire cutter holder.

FIG. 4 is a diagram illustrating the operation of cutting the roll paper.

FIG. 5 is a side sectional view of a lifting blade raising / lowering adjusting device.

FIG. 6 is a plan sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is an enlarged side view of a main part in a state where the direction of the cutting edge of the cutting blade is controlled and a state where the object to be cut is cut in half;

[Explanation of symbols]

 2 Roll paper as cutting object 3 Recording paper 4 Release paper 4a Adjusting unit 16 Cutting unit bed 17 Cutter holder 40 Cutter shaft 40a Rotation center line 43 Cutting blade 43a Cutting edge 43b Cutting edge

Claims (3)

[Claims] 1. A cutter shaft having a cutting edge eccentric to the rotation center line at a lower end of a cutter shaft rotatably supported about an axis with respect to the cutter holder. A cutting blade orientation control method for cutting into an arbitrary shape by relatively moving the object, the object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered on the upper surface thereof, The release paper is formed as wide as appropriate from the edge of the recording paper, and the cutting edge of the cutting blade is brought into contact with the upper surface of the release paper without the recording paper so that the cutter holder and the workpiece are cut in the direction to be cut. A method for controlling the orientation of a cutting blade, characterized in that the cutting blade is relatively moved. 2. A control in which a moving direction of a workpiece wound in a roll paper shape and a moving direction of a cutter holder intersect each other in a plan view, and both or one of the cutter holder and the workpiece is moved. The method for controlling the orientation of a cutting blade according to claim 1, wherein: 3. A winding support portion for supporting an object wound in a roll paper shape, and a cutter for cutting the object into a predetermined shape while being transported while being unwound from the winding support portion. A cutting portion that supports the holder so as to be able to reciprocate in a direction orthogonal to the transport direction.The cutter holder has a cutting tip at the lower end of a cutter shaft rotatably supported around an axis. Equipped with a cutting blade eccentric to the center line,
The object to be cut is composed of a non-cutting release paper and a recording paper temporarily adhered to the upper surface thereof. On the edge along the transport direction of the recording paper, a release paper is formed as wide as appropriate, and a cutting blade is provided. A direction control device for a cutting blade, characterized in that it is an adjusting part for adjusting the direction of the cutting edge.