JP2000052292A - Sheet material cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet material cutting device capable of performing partial cutting (partial cutting) of at least two kinds different in residual width while dispersion in the residual width is being restrained. SOLUTION: In a device in which sheet material is cut off by letting a stationary blade be advanced in motion while knife edge line themselves are being intersected with/brought into contact with the stationary blade, or letting the knife edge line in a saw-tooth wave shape be pierced into the surface of the sheet material, a movable blade 4 has a cut-out part 4b in its knife edge lines 4c, the cut-out part 4b is formed out of a wide width portion b1, and of a narrow width portion b2 which is continued to the wide width portion, and is formed at a position opposite to the cut and advancing direction of the wide width portion b1, and the terminal position of the advancement of the movable blade 4 can be selected in such a way that either one of the wide width portion b1 or the narrow width portion b2 agrees with the surface of the sheet to be cut out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a sheet material cutting device for cutting roll paper or folded continuous paper into an arbitrary length in a recording device such as a printer.

[0002]

2. Description of the Related Art A sheet material cutting apparatus, which is frequently used in a mini printer having a sheet material width of approximately 100 mm or less, such as a ticket vending machine or a register, is capable of cutting only a full width of a sheet (hereinafter referred to as a full cut). For example, partial cutting to form uncut portions such as perforations (hereinafter referred to as partial cuts)
There are three types of cutting devices, one that can only be used, and one that can select two types of cutting, the above-described full cut and partial cut. As a cutting device capable of selecting two types of cutting, a full cut and a partial cut, the end position of a cutting forward movement of a movable blade mainly having a notch on a cutting edge line is selected, and the notch and the cutting edge line of a fixed blade are selected. In many cases, the relative position of the motor is changed, but as a method of selecting this end position, Japanese Utility Model Laid-Open No. 63-16138 converts the rotary motion of a small motor into a reciprocating motion of a movable blade via a rack and a pinion. Discloses that two types of cutting, full cut and partial cut, are selected by controlling the direction of reciprocating motion in the direction of rotation of a small motor and the end position by the amount of rotation.

Further, Japanese Patent Application Laid-Open No. 6-47696 discloses a slide type sheet material cutting apparatus in which a movable blade reciprocates to cut a sheet material. Disclosed is a method of selecting two types of cutting, a full cut and a partial cut, by converting to a reciprocating motion, transmitting the reciprocating motion to a movable blade, selecting and controlling an end position of a cutting forward movement of the movable blade in accordance with a rotation direction of a driving source, and selecting and controlling the cutting position. ing.

[0004]

In recent years, there have been many demands for sheet material cutting devices for a mini printer such as a ticket vending machine and a register which can select two types of cutting, a full cut and a partial cut. Often used outdoors (eg, gas stations).
However, when used outdoors, the cut sheet may be blown off by wind in full cut, and even in partial cut, the width is insufficient with the conventional uncut width of about 2 mm. The remaining part was sometimes torn. Further, by using a movable blade driving mechanism as described in Japanese Utility Model Laid-Open No. 63-16138 and Japanese Patent Laid-Open No.
When trying to select two types of uncut widths with a character-shaped or saw-shaped movable blade, the end of the cutting forward movement of the movable blade due to the fluctuation of the cutting reaction force due to the influence of the material, thickness, etc. of the sheet material to be cut. There is a possibility that the positions are varied, and as a result, the uncut width greatly varies.

In view of the above, the present invention provides a slide type sheet cutting apparatus in which a movable blade performs a cutting forward movement with respect to a sheet material to be cut, thereby suppressing the above-mentioned variation in the uncut width due to the thickness of the sheet material to be cut. It is another object of the present invention to provide a sheet material cutting device capable of performing two or more partial cuts having different uncut widths.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a fixed blade and a movable blade for cutting the sheet material between the two blade edges by advancing forward while cross-pressing the blade edge line with the blade edge line of the fixed blade. −
In the material cutting device, the movable blade has a notch at its cutting edge line, and the notch is continuous with the wide portion and the position opposite to the forward movement of the wide portion. And the movable blade comprises a narrow portion formed in
A sheet material cutting device, wherein the end position of the forward movement is selectable so that the wide portion or the narrow portion stops at the position of the cutting edge of the fixed blade.
In a sheet material cutting device having a movable blade that cuts the sheet material by piercing a surface of the sheet material to be cut with a saw blade-shaped blade line, the movable blade has a notch in the blade line, The notch is formed of a wide portion and a narrow portion formed at a position opposite to the forward movement of the wide portion continuously with the wide portion, and the movable blade has the wide width. A sheet material cutting apparatus characterized in that an end position of the advancing movement can be selected so that a portion or a narrow portion stops at a position on a surface of the sheet material to be cut.

In the inventions of the present application, the notch provided at the cutting edge of the movable blade is provided at a position opposite to the cutting forward movement with respect to the wide portion and the wide portion following the wide portion. When the end of the forward movement of the movable blade is selected at a position where the wide notch portion coincides with the cutting edge of the fixed blade or the surface of the sheet to be cut, the sheet material to be cut is formed. Has a wide uncut part, and
If the end of the forward movement of the movable blade is slightly extended from the above case, and the narrow notch is selected at a position corresponding to the cutting edge of the fixed blade or the surface of the sheet to be cut, the sheet material to be cut is A narrow uncut width is formed.

[0010] If the angle between each of the sides facing each other between the left and right sides of the wide and narrow portions of the cutout portion and the cutting edge of the fixed blade or the surface of the sheet to be cut is made sufficiently large, Even if the end position of the cutting forward movement of the movable blade fluctuates due to the material, thickness, and the like of the sheet material to be cut, the fluctuation of the width of the uncut portion can be suppressed.

[0009]

Next, an embodiment of the present invention will be described. FIGS. 1A and 1B are diagrams for explaining an embodiment of the apparatus of the first invention of the present application, wherein A shows the positional relationship between the planar shape of a movable blade and the cutting edge lines (6a1 and 6a2) of a fixed blade described later. FIG. 4B is a diagram showing a positional relationship and a drive system of the movable blade 4 in a cutting standby state with respect to the frame 5 and the fixed blade 6.

In FIG. 1A, the movable blade of this embodiment has a V-shaped cutting edge line 4c, and the cutting edge line 4c has a notch 4b.
The notch 4b includes a wide portion b1 and a narrow portion b2 formed at a position opposite to the forward movement of the wide portion and continuous with the wide portion. Reference numeral 4d denotes a blade edge guide portion, and 4a denotes a drive pin for driving the movable blade 4 in a vertical direction on the paper surface by making it possible to select an end position of the cutting forward movement by a drive system (not shown).

In FIG. 1B, a fixed blade 6 having a cutting edge line 6a is fixed to a frame 5 having a sheet passage window 7. The movable blade 4 is pressed perpendicularly to the paper surface (toward the blade edge line 6a of the fixed blade) by pressing means (not shown), and is slid and guided in the vertical direction in the figure. When the movable blade 4 is pushed downward in the drawing from the state of FIG. 1B via the drive pin 4a, the movable blade 4 changes its blade line 4c to the blade line 6a of the fixed blade 6.
The sheet (not shown) supplied through the sheet passage window 7 starts to be cut from both edge sides by descending (advancing) while cross-contacting the sheet. The relationship between the end position of the forward movement of the movable blade and the cutting edge line 6a of the fixed blade is shown in FIG.
If the positional relationship of 6a1 of A is established, the sheet material to be cut (not shown) will have an uncut portion having the width of the wide portion b1 of the notch 4b, whereby the sheet material is broken by wind or the like. Nothing.

Similarly, if the end position of the forward movement is set to the positional relationship of 6a2, the unremoved width of the narrow portion b2 is obtained. (Furthermore, the cutting edge line 6a is 6a3
If the movable blade 4 is moved forward until the positional relationship shown in FIG. As described above, by selecting the end position of the forward movement of the movable blade, the uncut width can be selected while suppressing the variation of the uncut width.

In FIG. 1B, the angle .theta.a formed between the opposed side of the wide portion or the narrow portion of the cutout portion 4b and the cutting edge line 6a of the fixed blade is defined by the cutting edge line 4c of the movable blade and the cutting edge line of the fixed blade. 6a, the angle θb is set so that θa> θb. Accordingly, even when the end position of the forward movement of the movable blade 4 fluctuates due to the load due to the material and thickness of the sheet material to be cut, the fluctuation of the width of the uncut portion is suppressed. If θa = 90 °, it is possible to completely eliminate the influence of the material and thickness of the sheet material to be cut on the width of the uncut portion.

Next, the driving section shown in FIG. 1B will be described. The rotation of the motor 1 is transmitted to the rotor 2 via the worm.
Now, assuming that the rotor 2 rotates counterclockwise from the state shown in the figure, the driving pin 2a implanted in the rotor 2 also revolves in the same direction. 3 moves leftward within the driving pin long hole 3b provided at 3 and eventually comes into contact with the left end of the driving pin long hole 3b,
The drive lever 3 is pressed to the left. As a result, the drive lever 3 moves to the left while the bifurcated portion provided at the right end thereof is supported by the fulcrum pin 5a. It comes into contact with the portion (a) of the formed drive pin hole 3a. Then, the drive lever 3 is revolved about 180 ° from the state shown in FIG.
(A) moves the movable blade 4 forward by pressing the drive pin 4a downward at the portion (a). (See FIG. 3A)

On the other hand, when the rotor 2 revolves clockwise approximately 180 ° from the position shown in the drawing, the driving pin 2a first moves rightward in the driving pin elongated hole 3b, and then contacts the right end of the elongated hole 3b. To move the drive lever 3 to the right. At this time,
The drive pin 4a contacts the (b) portion of the drive pin hole 3a and is pressed downward.

FIGS. 3A and 3B show the state after the rotor 2 has rotated about 180 ° in the counterclockwise and clockwise directions from the state of FIG. 1B, respectively. As can be seen by comparing A and B, the movable blade 4 contacts the (a) portion of the drive pin hole 3a in the drive pin hole 3a (the rotor rotates counterclockwise) and contacts the (b) portion. (The rotor rotates clockwise), the end positions of the forward movement for cutting the sheet are different, and the end positions of the fixed blades are defined by the narrow portions (A) of the notch, Alternatively, by matching the wide portion (B), a narrow or wide uncut portion can be formed.

Next, FIG. 2 is a diagram showing a planar shape of an embodiment of the movable blade according to the second invention of the present application. FIG. 2 shows an example in which the same notch 4b as described above has two portions 4b | It is. According to the second aspect of the present invention, the blade edge of the movable blade is formed in a saw blade shape, and the tip of the saw blade is pierced into the sheet material to be cut and cut. There is no equivalent to a fixed blade. In the second invention, a notch 4 similar to the first invention is formed in the edge line of the movable blade.
b | is provided. Although the second invention does not have a fixed blade as described above, in order to prevent escape due to the cutting reaction force of the sheet material to be cut, for example, on the back side of the sheet material to be cut,
It is preferable to provide a sheet support on at least one of the front and back sides of the extension of the movable blade on the forward movement side, and preferably on both sides.

The operation of the second invention is substantially the same as that of the second invention, and the end position of the cutting forward movement of the movable blade is selected, and the surface of the sheet to be cut, the wide portion of the notch of the movable blade, Alternatively, by matching the narrow portions, a wide or narrow uncut portion can be formed in the sheet material to be cut, respectively. The function of the angle θa of the notch in the second invention is the same as that of the first invention. In the embodiment described above, the number of cutouts is one in the first invention and two in the second invention, but the inventions are not limited to this number.

[0019]

As described above, the width of the uncut portion of the sheet material to be cut formed by the two inventions of the present application is determined by the position of the cutting edge of the fixed blade or the surface of the sheet material to be cut. In the case, like the two-dot chain lines 6a1 and 6a2 in FIG. 1A,
The wide part of the notch provided on the cutting edge of the movable blade,
Or, because it matches the crossing dimension when crossing a narrow part, by enlarging the angle θa of this notch,
It is possible to perform two or more partial cuts with different uncut widths while suppressing the influence of the change in the position of the end of the forward movement of the movable blade on the width dimension of the uncut portion.

[Brief description of the drawings]

1A and 1B are diagrams illustrating an apparatus according to an embodiment of the first invention of the present application, and FIG. 1A is a diagram illustrating a positional relationship between a planar shape of a movable blade and a fixed blade edge line 6a1 or 6a2. , FIG.
B is a diagram illustrating the entire apparatus in a cutting standby state.

FIG. 2 is a view showing a planar shape of an embodiment of a movable blade according to the second invention.

FIGS. 3A and 3B are diagrams for explaining the operation of the drive unit of the embodiment of FIG. 1; FIG. 3A shows that the rotor 2 rotates counterclockwise in FIG. 3A to form a narrow uncut width; , FIG. 3B shows a clockwise rotation to form a wide uncut width.

[Explanation of symbols]

1 motor, 2 rotors, 2a drive pin, 3 drive lever, 3a drive pin hole, 3b drive pin long hole,
4, 4 'movable blade, 4a, 4a' drive pin, 4b, 4
b 'notch, 4c movable blade edge, 4d guide, 5 frame, 5a fulcrum pin, 6 fixed blade, 6a
Fixed blade edge, 7 sheet passing window

Claims (2)

[Claims] 1. A sheet material cutting apparatus comprising: a fixed blade; and a movable blade that moves forward while cutting the edge line of the fixed blade crosswise and in pressure contact with the edge line of the fixed blade to cut a sheet material between the edge lines. The movable blade has a notch at its cutting edge line, and the notch has a wide portion and a narrow portion formed at a position opposite to the forward movement of the wide portion continuously to the wide portion. And, the movable blade is characterized in that the end position of the forward movement can be selected so that the wide portion or the narrow portion stops at the position of the cutting edge of the fixed blade. Sheet material cutting device. 2. A sheet material cutting device having a movable blade for cutting a sheet material by piercing a surface of a sheet material to be cut into a saw blade edge line, wherein the movable blade has a notch in the blade line. The notch is composed of a wide portion and a narrow portion formed at a position opposite to the forward movement of the wide portion, the movable blade being continuous with the wide portion. A sheet material cutting device, wherein a terminal position of the forward movement is selectable so that a wide portion or a narrow portion stops at a position on a surface of the sheet material to be cut.