JPH10118979A - Rotary cutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a full cut and a stub cut, and to realize a stub cut generating no cutting error. SOLUTION: A fixed cutter having a straight edge 20a; and a movable cutter 21 having the first edge 37 journaled turnably, and the second edge 38 positioned at the rear side of the first edge 37; are provided. When a full cut turning amount is set to a turning amount setting means, the movable cutter 21 is turned until both the first edge 37 and the second edge 38 cooperate, according to the turning amount of the full cut, so as to full cut a band form paper 32. And when a sub cut turning amount is set, the movable cutter 21 is rotated until only the first edge 37 cooperates with the edge 20a of the fixed cutter, so as to stub cut the band form paper 32, and an accurate stub cut can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cutter device capable of performing full cut and stub cut of a print medium such as paper.

[0002]

2. Description of the Related Art FIG. 5 shows a rotary cutter incorporated in a printer (referred to as a receipt printer) for printing a receipt used in a conventional electronic cash register or the like.
This will be described with reference to FIGS. In the receipt printer 1, as illustrated in FIG. 5, a pair of paper guides 3 and 4 arranged toward a paper insertion slot 2 into which a receipt paper is inserted.
Are fixedly attached to a main frame (not shown), and a paper transport path 5 formed by these opposed paper guides 3 and 4 communicates with the printer unit 6.
The printer unit 6 includes a thermal head 8 attached to a bracket 7 pivotally supported on a main frame and a platen provided downstream of a paper transport path 5 formed by the paper guides 3 and 4. Roller 9, push plate 1 rotatably supported on main frame
And a spring 11 for pressing the thermal head 8 against the platen roller 9. The platen roller 9 is driven by a transport motor 13 via a platen roller gear 9a and an idler gear 12.

In the receipt printer 1, a paper transport path 15 for guiding the receipt paper printed by the printer unit 6 to a paper cutter unit 14 and further leading to a receipt discharge port (not shown) includes a pair of opposed paper sheets. Guide 16,
17 and a paper guide 18 disposed downstream of the paper cutter unit 14. Here, the lower paper guide 16 is fixedly attached to the main frame, but the upper paper guide 1
Numeral 7 is rotatably mounted on the bracket 7 via a mounting portion 17a projecting upward from the rear end thereof, and forms a jam detecting portion together with the microswitch 19 for detecting this rotation.

The paper cutter 14 comprises a flat rectangular fixed blade 20 and a movable blade 21 having blades 20a and 21a formed on one side edge, respectively, as shown in FIG. The blade 20 and the movable blade 21 are arranged so that the blade portions 20a and 21a face each other with the paper transport path 15 interposed therebetween. As shown in FIGS. 6 and 7, the movable blade 21 has shafts 22 provided on one side on both sides in the longitudinal direction.
The other end is a swing end that swings around the shaft 22 at the upper corner in FIG. 6. A blade portion 21a is formed on the ridge, and a shaft 24 is attached to the surface of the swinging end on which the shaft 22 is provided.
The surface 21b on which the paper is provided is shown in FIG.
Are arranged along the lower surface. One end 23b of the frame 23 allows the shaft 24 to move when the swinging end swings, and has a shaft 2
A long hole 23c that regulates the swing range of the swing end by making the 4 abut is formed. As shown in FIG. 6, the blade 21 a of the movable blade 21 is configured such that the movable blade 21
2, the fixed blade 2 is sequentially rotated from the shaft 24 side.
It is attached with a slight inclination so as to be in sliding contact with the zero blade portion 20a.

[0005] The movable blade 21 is connected to the shaft 22,
A cutter lever 25 as a rotating means is disposed on one side of both sides provided with 24. The cutter lever 25 is formed in a substantially L-shape including a short rod 25a and a long rod 25b. In addition, a part of a connecting corner portion of the short rod 25a with the long rod 25b is formed with a bent piece 25c bent in a U-shape. A through-hole 26b is formed at the tip of the short rod 25a, and through-holes 26a and 26c formed as the same axis are formed at the corners and the bent pieces 25c. A long rod 25b is formed at an end of the long rod 25b. A hole 27 is formed. An eccentric shaft 30 provided on a gear 29 driven by a cutter motor 28 is loosely fitted in the long hole 27. The eccentric shaft 30 is movable in the through hole 26b and the through holes 26a and 26c. The shafts 22 and 24 provided on the blade 21 are inserted therethrough.

The fixed blade 20 is fixed to and attached to the frame 23 by a shaft 31 erected on one side on both sides in the longitudinal direction. As shown in FIG. 6, the fixed blade 20 has the above-mentioned blade portion 20a formed on the side opposite to the side where the shaft 31 is erected and on the corner ridge on the movable blade 21 side. The surface provided with the portion 20a is referred to as a guide surface 20b, and the movable blade 2 is provided on the blade portion 20a.
One blade 21a is in sliding contact with the blade 20a, and the movable blade 21 rotates to cooperate with the blade 21a to cut or cut the receipt paper 32 interposed between the two blades 20a, 21a. It is supposed to.

The rotation amount setting means 33 is controlled by a control device 34 comprising a CPU, a ROM and the like, and rotates by a set amount about the shaft 22 of the movable blade 21. 35, a cutter motor 28 and a cutter lever 25. The cutter motor 28 uses a stepping motor.

In such a configuration, the receipt paper 3
When performing a full cut of 2, a full cut button is pressed as a selection means (not shown), and a full cut is instructed. In this state, in the receipt printer 1, when the receipt paper 32 is inserted into the paper transport path 5 from the paper insertion slot 2, the receipt paper 32 is sequentially transported under the thermal head 8 according to the rotation of the platen roller 9. Predetermined printing is performed, passing between the blade portions 20a and 21a formed by the fixed blade 20 and the movable blade 21,
The paper 21 is guided by the surface 21b which also serves as a guide for the movable blade 21 and the paper guide 18, and is guided to a receipt issuing port of an electronic cash register (not shown).

When the printed portion, that is, the receipt is exposed at the receipt issuing port, the cutter motor 2
8, the gear 29 rotates in the direction of the arrow shown in FIG. 5, and the eccentric shaft 30 attached to the gear 29
7, the short rod 25a of the cutter lever 25 attached to the movable blade 21 which rotates in the direction of the arrow about the shaft 22 as a fulcrum rotates about the shaft 22 as a fulcrum, and is movable. The blade 21 also rotates together with the cutter lever 25. At this time, since the blade portion 21a is attached to be inclined as described above, the blade portion 21a is attached to the blade portion 20 of the fixed blade 20.
a is sequentially slid against the shaft 24 from the shaft 24 side, and the receipt paper 32 is simultaneously cut from the shaft 24 side toward the frame 23a side, and finally cut, that is, full cut, and a receipt is issued.

[0010] Further, for example, a receipt printer 1 for issuing a meal ticket composed of a customer's service part and a kitchen order part.
In many cases, the meal ticket is a stub cut that cuts only a part of both the part for the customer's use and the part for ordering to the kitchen, and the part is often cut off. Therefore, when stub cutting is performed, the control device 34 controls the movable blade 2
The motor driver 35 so that the movable blade 21 is tilted and rotated by a preset angle such that the cutting travel distance of the movable blade 21 is smaller by the uncut dimension W1 than the width dimension W of the receipt paper 32 shown in FIG. Control. As a result, a receipt in which the receipt paper 32 is stub-cut leaving the uncut dimension W1 is issued.

That is, when the user wants to perform a stub cut, the user presses a stub cut button (not shown), which is a selection means, and instructs a stub cut. A cutter lever 25 having a long hole 27 in which an eccentric shaft 30 provided in a gear 29 rotated by the cutter motor 28 rotates by a predetermined amount of stub cutting, and the cutter lever 25 rotates and is movable. The blade 21 rotates about a shaft 22. On this occasion,
As described above, the blade portion 21a is sequentially fixed blade 2 from the shaft 24 side.
By slidably contacting the zero blade portion 20a, stub cutting can be performed.

[0012]

The rotary cutter device constructed as described above has the following problems. In other words, the stub cut of the receipt paper 32 is performed by controlling the cut width, the rotation angle of the rotary cutting blade, and the rotation amount of the cutter motor 28 by the control device 34, Cutter lever 2
There is a problem that the uncut width of the cut when stub cutting is varied due to the rotation error of 5, the variation of component dimensions, the play between the components, and the like. For this reason, the uncut portion 32a of the receipt paper 32 at the time of stub cutting is different every time. Either the customer's service part or the kitchen part is peeled off, and in some cases, the printed part is torn, resulting in a problem that the printed content cannot be determined.

In other words, when the stub cut is performed, the amount of sliding of the movable blade 21 with the blade portion 20a of the fixed blade 20 varies depending on the component error and assembly error of each component, and it is difficult to make this constant. It is. Therefore, the motor driver 3
No matter how precisely the amount of rotation of the fifth lever 5 is controlled, the long hole 27, the short rod 25a, the long rod 2
If the dimensional error occurs in the sheet 5b and the bent piece 25c, the uncut portion 32a of the receipt paper 32 may be too long, or may be too short and fall on the paper transport path 15 to easily cause a jam. Further, there is the above-mentioned problem that the printed content printed on the receipt paper 32 cannot be determined due to variation in the length of the uncut portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a rotary cutter device which can solve the problem of variation in uncut dimensions when a stub is cut on a strip of paper.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the invention according to claim 1 is arranged on a paper transport path and in a direction orthogonal to the transport direction of the band-shaped paper in the paper transport path. The movable blade is provided with a fixed blade provided with a blade portion provided on one side and a linear blade portion for cutting a band-shaped sheet in cooperation with the fixed blade on one side edge and rotatably supported on the other side. A rotary cutter device, comprising: a blade; and rotating means for rotating the movable blade, wherein the fixed blade and the movable blade perform full cut or stub cut of the band-shaped paper. A first blade portion formed over a length, and a second blade portion formed adjacent to the first blade portion and formed rearward by a predetermined distance from the first blade portion with respect to the cutting rotation direction. And the amount of rotation of the movable blade is determined by the full cut or the stub cut. It has a rotation amount setting means for setting, and a selection means for selecting either full cut or stub cut, and when the full cut is selected by the selection means, the rotation means sets the rotation amount setting means. When the stub cut is selected, the movable blade is rotated until the first blade and the second blade cooperate with the blade of the fixed blade in accordance with the rotation amount of the full cut. This is a rotary cutter device that rotates the movable blade according to the amount of rotation of the cut until only the first blade cooperates with the blade of the fixed blade.

According to a second aspect of the present invention, in the first aspect of the present invention, the movable blade is formed to have a rectangular blade surface, and a step portion is formed while leaving one end of the corner ridge to a predetermined length. This is a rotary cutter device in which the first blade portion and the second blade portion are formed at the corners of the corners and the corners of the steps.

According to a third aspect of the present invention, there is provided a rotary cutter device according to the second aspect of the present invention, wherein the step portion is formed by cutting off a ridge of a corner into an inclined surface or a curved surface.

According to the first aspect of the present invention, since the strip-shaped paper cut by the rotary cutter device can be selected from the full cut and the stub cut by the selection means, the full cut is selected by the selection means. When the movable blade is moved, the first blade and the second blade cooperate with the fixed blade in accordance with the full-cut rotation amount set in the rotation amount setting means by the rotation means. The paper is fully cut by rotating it until it works,
When the stub cut is selected, the movable blade is rotated according to the amount of rotation of the stub cut until only the first blade cooperates with the blade of the fixed blade so that the uncut portion of a predetermined length can be accurately positioned. And has the effect of reliably stub-cutting the strip of paper.

According to a second aspect of the present invention, in the first aspect of the present invention, a step portion is formed by leaving a predetermined length of one end of a corner ridge on which the blade portion of the movable blade is formed. Since the first blade portion and the second blade portion are formed, when the stub is cut, only the first blade portion of the movable blade is slidably brought into contact with the blade portion of the fixed blade, thereby causing variation. It is capable of issuing stub-cut strips of paper without stubs.

According to a third aspect of the present invention, in the invention of the second aspect, the cut portion is formed by cutting a corner portion into an inclined surface or a curved surface so that the second blade portion of the movable blade is formed. This has the effect of increasing the strength of the portion where the second blade portion is formed, since the cutout notch can be reduced.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The same parts as the parts shown in the conventional example are denoted by the same reference numerals, and detailed description will be omitted.
The rotary cutter device according to the present embodiment is incorporated in the receipt printer 1 of an electronic cash register in the same manner as the conventional example.

First, the paper cutter section 14 is a flat fixed blade 20 having blade sections 20a and 36 formed at one edge.
The fixed blade 20 and the movable blade 21 are sandwiched by the paper transport path 15, that is, the blade portions 20a and 36 extend in a direction orthogonal to the transport direction.
Are formed so as to face each other. The blade portion 36 of the movable blade 21 cuts the receipt paper 32, which is an example of a band-shaped sheet, by cooperating with the first blade portion 37 used at the time of stub cutting and the first blade portion 37 at the time of full cutting. A second blade portion 38 is formed. The first blade portion 37 is formed as a predetermined length from one side of one end of the movable blade 21, that is, the shaft 24 side, that is, a cutting length in a stub cut, and the second blade portion 38 is movable. Blade 21
The blade portion 36 is provided so as to be divided into two stages by forming a step portion 39 at the bottom.

As a result, the second blade portion 38 is attached to the shaft 22
The movable blade 21 is rotated in the cutting rotational direction around the fixed blade 2
The first blade portion 37 with respect to the rotation direction of the zero blade portion 20a.
It is formed so as to be located rearward by a predetermined distance.

The receipt paper 32 is guided between the platen roller 9 and the thermal head 8 through the paper guides 3 and 4 inserted through the paper insertion slot 2, and further transmitted to the idler gear 12 directly connected to the transport motor 13 to receive the thermal head. 8
The receipt paper 32 is printed while being conveyed downstream (in the direction of the paper guide 18) by the frictional force between the paper receipt unit 32 and the platen roller 9.
Is a mechanism for cutting.

A shaft 22 provided on the movable blade 21
Is a distance R1 from the center point P of the shaft 22 to the first blade portion 37 of the movable blade 21 as shown in FIGS. 2 and 3A and 3B.
And a distance R2 connecting the center point P of the shaft 22 to the second blade portion 38 at a predetermined distance θ (for example, 2
0 °), that is, located at a predetermined distance rearward from the first blade portion 37 in the cutting rotation direction as described above.

Next, the operation of this embodiment will be described. When cutting the receipt paper 32 that has been transported along the paper transport path 15 and inserted between the fixed blade 20 and the movable blade 21, the cutting distance of the movable blade 21 (the length of the first blade portion 37) is as shown in FIG. Is reduced by the step 39 so as to be smaller by the uncut dimension W1 than the width dimension W of the receipt paper 32 shown in FIG.
Only the first blade portion 37 of the movable blade 21 is the blade portion 2 of the fixed blade 20.
By rotating the movable blade 21 via the cutter lever 25 by driving of the motor driver 34 so as to make sliding contact with the receipt paper 0a, the receipt paper 32 is uncut in the width direction.
The stub is cut leaving a.

Since the first blade portion 37 and the second blade portion 38 of the movable blade 21 are provided with a step portion 39,
Even if the swing angle of the movable blade 21 is loose or the size of each part is not correct, the step portion 39 can absorb it. Therefore, the length of the uncut portion 32a having the predetermined length can be always formed to a constant length on the receipt paper 32, and the stub can be cut reliably.

When performing a full cut, the movable blade 2
1 is driven by the control device 34 of the cutter motor 28, the first blade portion 37 and the second blade portion 38 are continuously in sliding contact with the blade portion 20a of the fixed blade 20, so that the receipt paper 32 is fully cut. Is done.

As described above, since the step portion 39 is formed on the movable blade 21 and the first blade portion 37 and the second blade portion 38 are formed, a reliable stub cut can be performed. Variations in the cutting dimension W1 are eliminated, so that a jam due to the receipt paper 32 falling onto the paper transport path 15 can be prevented.

As shown in FIG. 4, the first blade 3 is attached to the movable blade 21 of the paper cutter 14 of the rotary cutter device.
It is also possible to form an inclined surface 40 in which a corner edge of a step portion 39 for forming the 7 and the second blade portion 38 is curved. There is an advantage that the strength of the portion where the blade portion 38 is provided can be reinforced.

In the present embodiment, the blade surfaces of the fixed blade 20 and the movable blade 21 are formed in a rectangular flat shape. However, the present invention is not limited to this. The movable blade may be formed such that the second blade portion of the movable blade is positioned a predetermined distance behind the first blade portion in the cutting rotation direction. It may be formed on the peripheral surface. It goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0032]

As described above, according to the first aspect of the present invention, the strip-shaped paper cut by the rotary cutter device can be selected from either full cut or stub cut by the selection means. When selected, the movable blade and the first blade and the second blade are both fixed blades in accordance with the full-cut rotation amount set in the rotation amount setting unit by the rotation unit. By rotating the paper until it cooperates, the paper is fully cut. When stub cut is selected, only the first blade cooperates with the blade of the fixed blade according to the amount of rotation of the stub cut. By rotating the sheet, the uncut portion having a predetermined length is accurately formed, and the belt-shaped sheet can be stub-cut reliably.

[0033] According to the invention of claim 2, according to claim 1 of the present invention.
In addition to the described invention, the first blade portion and the second blade portion are formed by forming a cut portion while leaving a predetermined length of one end side of the corner ridge on which the blade portion of the movable blade is formed. Therefore, when the stub is cut, only the first blade portion of the movable blade is surely brought into sliding contact with the blade portion of the fixed blade, so that there is an effect that a stub-cut band-shaped sheet having no variation can be issued. .

According to a third aspect of the present invention, in the second aspect of the present invention, the cut portion of the movable blade is formed by cutting a corner portion into an inclined surface or a curved surface, so that the second portion of the movable blade is formed.
Since the cut-out notch of the blade portion can be reduced, the effect of increasing the strength of the formation portion of the second blade portion can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotary cutter device according to an embodiment of the present invention as viewed from an upstream side of a sheet conveying path.

FIG. 2 is a diagram showing a part of a movable blade and a fixed blade in the embodiment.

FIG. 3 is a diagram showing a relationship between a movable blade and a fixed blade according to the embodiment.

FIG. 4 is a perspective view of another embodiment of the rotary cutter device of the above embodiment.

FIG. 5 is a sectional view of a main part of a printing device using a conventional rotary cutter device.

FIG. 6 is a perspective view of a conventional rotary cutter device as viewed from an upstream side of a sheet conveying path.

FIG. 7 is a view of a movable blade of a conventional rotary cutter device as viewed from above.

FIG. 8 is a diagram illustrating a stub cut state of a receipt sheet.

DESCRIPTION OF SYMBOLS 1 Receipt printer 5 Paper transport path 14 Paper cutter section 20 Fixed blade 20a Blade section 21 Movable blade 21a Blade section 25 Cutter lever (rotation means) 28 Cutter motor 32 Rotation amount setting means 33 Control means 34 Motor Driver 32 Receipt paper (band-shaped paper) 36 Blade part 37 First blade part 38 Second blade part 39 Step part 40 Inclined surface

Claims (3)

[Claims] 1. A fixed blade provided on a paper transport path and having a blade portion provided in a direction perpendicular to the paper transport direction in the paper transport path, and a fixed edge on one side edge cooperating with the fixed blade. A movable blade rotatably supported rotatably on the other side while providing a linear blade portion for cutting the band-shaped paper; and a rotating means for rotating the movable blade, wherein the fixed blade and the movable blade A rotary cutter device for full-cutting or stub-cutting a strip of paper, comprising: a first blade portion having a blade portion of the movable blade formed over a predetermined length from one side; and cutting and rotating adjacent to the first blade portion. A second blade portion formed at a predetermined distance behind the first blade portion with respect to the direction, and a rotation amount setting means for setting the rotation amount of the movable blade to the full cut or the stub cut; , A choice between full cut and stub cut Has, at this time the full cut has been selected by the selection means, the rotation means by the rotation amount setting means movable blade and the first blade section according to amount of rotation of the full-cut set in the second
Rotate until both blades cooperate with the blade of the fixed blade,
When the stub cut is selected, the movable blade is rotated according to the amount of rotation of the stub cut until only the first blade cooperates with the blade of the fixed blade. 2. The method according to claim 1, wherein the blade surface of the movable blade is formed in a square shape and a step is formed while leaving one end of the corner ridge at a predetermined length, and the step is formed at the corner ridge and the corner of the step. The rotary cutter device according to claim 1, wherein the first blade portion and the second blade portion are formed. 3. The rotary cutter device according to claim 2, wherein the step portion is formed by cutting a ridge of a corner into an inclined surface or a curved surface.