JPH10291198A - Continuous paper cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly cut the continuous paper, and to reduce the size, particularly the height, of a device, by setting a contact angle of a contact part with a cut starting edge part of the continuous paper, of a cutting means, larger than a contact angle with the cut terminal edge part. SOLUTION: A cutting means 50 is mounted between a pair of pressing plates 42, 42', that is, between two recessed parts (compression spring storing parts) of an operation frame 41. An abutting 50a with the continuous paper P, of the cutting means 50 is circular when observed from a direction of the perforation (direction rectangular to the paper face) of the continuous paper to be cut, is extended in the direction same as the perforation (direction rectangular to the paper face), and is longer than the perforation (longer than a width of the continuous paper P). An abutting angle θ1 of an abutting part 50a to the cut starting edge part PL of the continuous paper P, is larger than an abutting angle θ to the cut terminal edge part PR. That is, the abutting part 50a is formed into the shape of dog's leg in a front view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous paper cutting apparatus for cutting continuous paper having perforations at the perforations.

[0002]

2. Description of the Related Art As a conventional continuous paper cutting apparatus, for example, the apparatus described in Japanese Patent Application Laid-Open No. 50-96136 is known.

FIG. 27 is a diagram showing the one described in the publication.

In FIG. 27A, reference numerals 21 and 22 denote paper receiving trays arranged in a paper discharging path of a line printer.
The continuous paper 2 discharged from the line printer is guided to this receiving tray.

[0005] Reference numerals 23 and 24 denote vertically movable paper pressers having a flat friction surface. These perforations 2a of the continuous paper 2 are located substantially at the center of the gap between the paper receiving tables 21 and 22 as necessary. In this state, the continuous paper 2 is pressed down, and both sides of the perforations 2a of the continuous paper 2 are pressed against the respective receiving surfaces over the entire width of the paper. This holding tool 2
3 and 24 have rubber pieces 23a and 24a as members for providing a flat friction surface at the tips.

Numeral 25 is a plate-shaped blunt device having a rounded tip portion 25a and capable of moving up and down.

In order to cut the sheet 2 from the perforations 2 a, the holding members 23, 2 hold both sides of the perforations 2 a of the continuous paper 2.
In a state in which the plate-shaped blunting device 25 is sandwiched between the sheet 4 and the receiving tables 21 and 22, the plate-shaped blunt device 25 may be dropped down to the center of the sheet over the entire width of the sheet.

As shown in FIG. 27B, a blunt unit 25 having a rounded tip 25a is used. With such a blunt device, the sheet starts to be pressed from the lowermost end 25a ', and as shown in FIG. 27 (d), the paper is cut from one end of the paper perforation 2a hitting the lowermost end 25a'. Will begin to do so. Accordingly, when the sheet is manually cut off from the perforation, the cutting of the sheet proceeds from one end to the other end of the perforation, so that a smooth sheet cutting is realized.

[0009] In this publication, FIG.
As shown in (c), there is also disclosed a rod 26 that rotates so as to swing down with one point 26c as a fulcrum.

[0010]

According to the continuous paper cutting apparatus as described above, the continuous paper is formed at one end of the perforation 2a (the left end (that is, the cutting start end) in FIG. 27C).
Since the cutting is started from the other end and the cutting proceeds toward the other end (the right end (that is, the cutting end) in FIG. 27C), the cutting is relatively difficult at the cutting start end, but once the cutting is started. Experience has shown that cutting proceeds relatively smoothly.

On the other hand, the continuous paper 2 has a perforation 2a extending to the side edge 2b of the paper as shown in FIG. 28 (a), and the continuous paper 2 has a side edge 2b as shown in FIG. Some continuous paper does not enter the edge 2b, and continuous paper having no perforation at the side edge 2b as shown in FIG. 2B is particularly difficult to be cut (cutting start) at the cutting start end. . In the continuous paper having perforations 2a as shown in FIG. 28 (a) extending to the side edge 2b of the paper, no perforations are formed in the side edge 2b as shown in FIG. 28 (b). Compared to continuous paper, cutting (cutting start) at the cutting start end is easier, but cutting at the cutting start end is more difficult to cut than subsequent cutting.

[0012] Japanese Patent Application Laid-Open No. 50-96136 describes that
No measures are disclosed for such a problem.

An object of the present invention is to solve the above-mentioned problem and to provide a continuous paper cutting device capable of cutting continuous paper smoothly.

[0014]

According to a first aspect of the present invention, there is provided a continuous paper cutting apparatus which transports continuous paper having perforations in a direction perpendicular to the perforations and temporarily stops the continuous paper. An apparatus for cutting continuous paper at a perforation at the time of stop, comprising a pair of support means for supporting continuous paper on both sides of the perforation when the continuous paper is temporarily stopped, and a support means on both sides of the perforation. Pressing means having a pair of pressing portions capable of pressing the continuous paper therebetween, and a contact portion to be disposed between the pair of pressing portions and the continuous paper to be cut is formed in an arc shape as viewed from the perforation direction. And a cutting means that is formed longer than the perforations, and the contact portion moves toward the perforations in a state of being inclined with respect to the continuous paper at the time of cutting. Front to cutting start Towards the abutment angle of the contact portion, characterized in that it is largely constituted as compared with the contact angle with respect to the cutting end of the continuous paper.

[0015]

According to the first aspect of the present invention, the continuous paper cutting device operates as follows since it has the above-described configuration.

The continuous paper having perforations is conveyed in a direction perpendicular to the perforations, and once stopped, the continuous paper is provided on both sides of the perforations with a pair of support means,
The pressing means is pressed and supported by the pair of pressing parts.

At the time of cutting, the cutting means which is arranged between the pair of pressing portions and whose contact portion with the continuous paper to be cut is formed in an arc shape as viewed from the perforation direction and which is longer than the perforation, cuts the continuous paper. By moving toward the perforation while being inclined with respect to the continuous paper, the continuous paper is cut at the perforation.

According to the continuous paper cutting apparatus of the first aspect, the cutting means is arranged such that the contact angle of the contact portion with respect to the cutting start end of the continuous paper is greater than the contact angle with respect to the cutting end of the continuous paper. Since it is configured to be larger than the contact angle, the cutting start end can be cut relatively easily.

Therefore, according to the continuous paper cutting device of the first aspect, continuous paper can be cut smoothly.

In addition, it is possible to reduce the size of the device, especially the height of the device.

More specifically, smooth cutting of the continuous paper is achieved by setting the contact angle of the abutting portion of the cutting means to the continuous paper from the cutting start end to the cutting end as a whole. It is also possible to achieve.

However, if the contact angle of the contact portion is set to be generally large from the cutting start end to the cutting end,
The height of the cutting means increases by that much, and as a result,
The device becomes large.

On the other hand, according to the continuous paper cutting apparatus of the first aspect, the cutting means is arranged such that the contact angle of the contact portion with respect to the cutting start end of the continuous paper is greater than the cutting end of the continuous paper. Since the contact angle with respect to the cutting end is set relatively small, the height of the cutting means can be reduced accordingly, and as a result, As a result, the size of the apparatus can be reduced.

That is, according to the continuous paper cutting apparatus of the first aspect, the continuous paper can be cut smoothly from the cutting start end to the cutting end, and the size can be reduced. .

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing an outline of an embodiment of a continuous paper cutting apparatus according to the present invention, wherein (a) is a plan view, (b) is a front view, (c) is a left side view, and (d). ) Is a right side view.
2 is an enlarged view of the left side in FIG. 1, (a) is a partial plan view, (b) is a partial front view, and (c) is a left side view. 3 is an enlarged view of the right side in FIG. 1, (a) is a partial plan view, (b) is a partial front view, and (c) is a right side view.

1 to 3, reference numerals 31 and 32 denote side frames arranged on the right and left, 33 denotes an upper frame, and 34 and
Reference numeral 35 denotes a subframe disposed slightly inside the side frames 31 and 32, 36 denotes a paper feed guide disposed on the front side of the apparatus, and 37 denotes a paper discharge guide disposed on the back side of the apparatus. Each of these frames 31 to 35, paper feed guide 36,
The paper discharge guide 37 is connected at an appropriate position and integrated, and constitutes a frame of the apparatus as a whole.

The paper feed guide 36 and the paper discharge guide 37
It constitutes a pair of support means for supporting the continuous paper to be cut on both sides of the perforation. The paper feed guide 36 is
The support means is located on the upstream side in the continuous paper transport direction, and the paper discharge guide 37 is a support means located on the downstream side.

As shown in FIGS. 2 and 3, the upper frame 33 has a front lower end 33 a bent to form a slit-shaped paper feed port 38 between the upper frame 33 and the paper feed guide 36. The rear lower end 33 b is also bent so as to form a slit-shaped discharge port 39 with the discharge guide 37.

FIG. 4 is an enlarged left sectional view mainly showing the upper frame 33, the paper feed guide 36, the paper discharge guide 37, the holding means 40, and the cutting means 50. FIG.
It is a partial perspective view which shows the movable frame of No. 0.

In FIG. 4, P is continuous paper to be cut, and Pa indicates a perforated portion. Continuous paper P
Is transported from the paper feed port 38 to the paper discharge port 39. C
Is a cutting space formed between the paper feed guide 36 and the paper discharge guide 37.

The holding means 40 has a movable frame 41 (see FIG. 5) having a substantially inverted concave shape as a whole, and holding plates 42 and 42 'provided at the lower end of the movable frame 41. The holding plates 42, 42 'constitute a pair of holding portions.

The movable frame 41 has a pair of holding portions 4.
2, 42 ′, between the pressing unit 42 ′ located downstream of the cutting unit 50 in the continuous paper transport direction and the cutting unit 50, the pressing unit 4 locating the continuous paper on the downstream side.
A guide surface 41c is formed between the support member 2 'and the support member 37 located on the downstream side of the pair of support members.

The holding plates 42 and 42 'are made of an elastic material such as rubber, and have a trapezoidal cross section.
As a result, at least the upstream side in the transport direction of the continuous paper (FIG. 4)
(Right side in FIG. 3) becomes inclined surfaces 42f and 42'f, and the inclined surfaces 42f and 42'f constitute a guide surface of the continuous paper P.

The pressing plates 42, 42 'press the continuous paper P on the lower surfaces 42a, 42'a, as described later, so that the lower surfaces 42a, 42'a have the lower surfaces 42a, 42'a as shown in FIG. A plurality of grooves 42b are provided, or fine irregularities 42c are formed as shown in FIG. 3B (so-called graining is performed), or the grooves 4b are formed as shown in FIG.
It is desirable to provide 2b and to perform graining 42c. With such a configuration, the lower surface 4
2a, 42'a, continuous paper P generated by the adhesion of paper powder
Of the pressing force or frictional force against the tire can be prevented.

In this embodiment, the holding plate 42,
42 'is divided into short pieces as shown in FIG. 7 (c), and engagement projections 42e, 42e are provided on the upper surface (mounting surface to the movable frame 41) of the single piece 42d, and as shown in FIG. 7 (b). As described above, the movable frame 41 is provided with a plurality of bar-shaped engagement holes 41e, and the holes 41e are provided with the protrusions 4e.
7e, the single piece 42d is fixed to the movable frame 41 by engaging as shown in FIG. 7 (a), and a plurality of the single pieces 42d are attached in a row as shown in FIG. 7 (d). The pressing plates 42, 42 'constitute the whole.

In FIG. 4, reference numerals 43, 43 denote urging means for constantly urging the pressing means 40 toward the supporting means, ie, the paper feeding guide 36 and the paper discharging guide 37, and the movable frame of the pressing means 40. It is constituted by a compression spring arranged between 41 and the upper frame 33. The compression spring 43 has two recesses 41 a and 41 of the movable frame 41.
In b, a plurality of each are provided. In this embodiment, as shown in FIG. 1A, the recesses 41a, 41b
There are a total of 12 in each of which 6 are provided. It is desirable that the pressing force of the urging means 43 on the continuous paper is set so that the pressing force at the cutting start end by the cutting means 50 described later is larger than the pressing force at the cutting end part. Specifically, for example, as shown in FIG. 1A, of the twelve compression springs 43, the compression spring 43 (W1) closest to the cutting start end (located on the leftmost side in FIG. 1A). ), 43 (W1) are strong springs, and the other springs 43 are relatively weak. Alternatively, the compression springs 43 (W1) and 43 (W1) closest to the cutting start end and the compression springs 43 (W2) and 43 (W2) closest to the cutting end (located on the rightmost side in FIG. 1A). ). Alternatively, the six springs located on the left side in FIG.
The six springs located on the right side are relatively weak springs,
It is desirable to configure it appropriately. In this case, the pressing force W1 (see FIG. 18C) of the continuous paper obtained by the compression spring 43 (W1) closest to the cutting start end is the same as FIG.
As shown in FIG. 8 (b), the size of the continuous paper having no perforation at the side edge 2b is set to a size that can reliably cut one side end of the continuous paper. Also, the compression spring 4 closest to the cutting end portion
3 (W2), the pressing force W2 (see FIG.
8 (c)), as shown in FIG. 28 (b), it is sufficient if the size is such that the other side end of the continuous paper having no perforation at the side edge 2b can be reliably cut.

The pressing means 40 is constantly urged by the urging means 43 toward the paper feed guide 36 and the paper discharge guide 37.
The movement is regulated by 0.

In FIG. 4, reference numeral 50 denotes a cutting means, which is provided between the pair of pressing plates 42 and 42 ', that is, the movable frame 4;
One of the two recesses (compression spring accommodating portions) 41a and 41b is disposed. The cutting means 50 is configured to cut the continuous paper P to be cut from a perforation direction (a direction perpendicular to the paper surface of FIG. 4).
The contact portion 50a with the continuous paper P is formed in an arc shape,
It extends in the same direction as the perforation (the direction orthogonal to the paper surface of FIG. 4) and is formed longer than the perforation (that is, longer than the width of the continuous paper P) (FIG. 1A and FIG. 17).
(C)).

The cutting means 50 will be described later with reference to FIG.
As described with reference to FIG.
Is larger than the contact angle θ of the continuous paper P with respect to the cutting end PR. That is, the abutting portion 50a is “he” in front view.
It is configured in the shape of a letter.

FIG. 8 (a) is a perspective view showing the vicinity of the left end of the cutting means 50, and FIG. 8 (b) is a perspective view showing the same at a different angle.

In the figure, reference numeral 34a denotes an upper piece of the sub-frame 34 also shown in FIGS. This upper piece 3
4a and 34a are upper frames 3 as shown in FIGS.
It is fixed to 3.

As shown in FIG. 8, the left end of the cutting means 50 is inserted between the upper pieces 34a, 34a, and can be moved up and down by being guided by these upper pieces 34a, 34a. The same applies to the right end of the cutting means 50, as shown in FIG.
5a, and these upper pieces 35a, 35
It can be moved up and down by being guided by a. The upper piece 35
a, 35 a are also fixed to the upper frame 33.

As shown in FIG. 8, a guide block 51 is fixed to the left end of the cutting means 50. The guide block 51 is provided with a total of four guide pieces 51a, and the upper piece 34a of the subframe is loosely inserted between the guide pieces 51a. This restricts the movement of the cutting means 50 in the axial direction (the left-right direction in FIG. 1A).

That is, the cutting means 50 can be moved up and down while being guided by the upper pieces 34a, 34a, 35a and 35a of the left and right subframes, and the guide block 51 is guided to the upper piece 34a of the left subframe. As a result, the movement in the axial direction is restricted.

At both ends of the cutting means 50, pins 52 and 53 for a cutting means link mechanism 60 to be described later are provided (for the pin 53 at the right end, see FIGS. 3 and 10).

FIGS. 9A and 9B are views showing the link mechanism 60 for the cutting means and the link mechanism 70 for the pressing means, wherein FIG. 9A is a front view of the left side, and FIG. 9B is a left side view. FIG. 10A is a front view of the same right part, and FIG. 10B is a right side view.

As shown in these figures, the link mechanism 60 for the cutting means comprises a substantially square rod-shaped drive shaft 61 and this drive shaft 6.
1 and a pair of arms 62L, 62R fixed to both ends of the
Connecting rods 63L, 6 rotatably connected to
3R.

As shown in FIG. 9, a gear 64 is fixed to the left end of the drive shaft 61, and this gear 64 is connected to the output shaft of a motor 65 mounted on the sub-frame 34 as shown in FIG. By meshing with the gear 66 fixed to 65a, the drive shaft 61 is rotationally driven by the motor 65 as described later.

As shown in FIG. 9, the left arm 62L has
A first pin 62L1 is provided.
1 and the pin 52 at the left end of the cutting means 50 are connected by a connecting rod 63L.

As shown in FIG. 10, the right arm 62R is
Its shape is slightly different from that of the left arm 62L. That is, the right arm 62R has the same shape as the left arm and the protrusion 62Ra is formed. The projection 62Ra is provided with a first pin 62R1, and the pin 62R1 and the pin 53 on the right end of the cutting means 50 are provided.
Are connected by a connecting rod 63R. As a result, FIG.
10B, the distance RL from the center of the drive shaft 61 to the center of the first pin 62L1 of the left arm and the center of the first pin 62R1 of the right arm. Is different from the distance RR. RL <RR.
Also, the position of the drive shaft 61 around the first pin 62R1 of the right arm is shifted from the first pin 62L1 of the left arm by an angle α. That is, the connecting portion between the one arm 62L and the connecting rod 63L (the pin 62L1 portion) and the connecting portion between the other arm 62R and the connecting rod 63R (the pin 62R1 portion) are shifted in phase about the drive shaft 61. Is provided.

As shown in FIGS. 9 and 10, the link mechanism 70 for the holding means includes a drive shaft 61 common to the link mechanism 60 for the cutting means, a pair of arms 62L and 62R,
A connecting rod 71L, 71R rotatably connected to the arm 62L, 62R and the end of the holding means 40 is provided.

As shown in FIG. 9, the left arm 62L has
A second pin 62L2 is provided. This second pin 6
2L2 is located at the same position as the first pin 62L1 around the drive shaft 61, and is provided to the left of the first pin 62L1. Then, the second pin 62L2
And a pin 45L provided on a hanging connecting plate 44L fixed to the left end of the movable frame 41 of the holding means 40.
Are connected by a connecting rod 71L. A long hole 72 is provided in the connecting rod 71L.
The pin 62L2 is slidably connected.

The link mechanism 70 for the holding means has basically the same configuration on the left and right (appears symmetrically in FIGS. 9 and 10). That is, as shown in FIG. 10, the right arm 62R has a second pin 62R2 located at the same position as the left second pin 62L2 around the drive shaft 61.
The second pin 62R2 is connected to a pin 45R provided on a hanging connecting plate 44R fixed to the right end of the movable frame 41 of the holding means 40 by a connecting rod 71R. . The connecting rod 71R is provided with a long hole 72, and the second pin 62 is provided in the long hole 72.
R2 is slidably connected.

As described with reference to FIG. 4, the pressing means 40 is constantly urged toward the paper feed guide 36 and the paper discharge guide 37 by the urging means 43, but the link mechanism for the pressing means is used. When 70 is in the state shown in FIGS. 9 and 10 (standby state described later), the urging force of the urging means 43 is applied to the connecting plates 44L, 44R, the pins 45L, 4
5R, connecting rods 71L, 71R, second pins 62L2, 6
The movement is restricted by being received by the drive shaft 61 via the 2R2 and the arms 62L, 62R. The drive shaft 61 is rotatably supported by the sub-frames 34 and 35 as shown in FIGS.

FIG. 11 is a partially enlarged perspective view showing details of the cutting space C (see FIG. 4).

In FIGS. 11 and 4, reference numeral 80 denotes a movable paper guide, which is a continuous paper P fed as described later.
4 is to prevent the cutting edge C from entering into the cutting space C, that is, between the paper feed guide 36 and the paper discharge guide 37, thereby causing a paper jam. As will be described later, when the drive shaft 61 rotates and the cutting means 50 cuts the continuous paper P, the movable paper guide 80
Is retracted from the cutting space C with the rotation of.

The movable paper guide 80 is shown in FIG.
As shown in FIG. 3, a plurality of (in this embodiment, five) guide blocks 81 are mounted on the drive shaft 61.

FIGS. 13A and 13B are views showing the guide block unit 81, wherein FIG. 13A is a front view, FIG. 13B is a left side view, and FIG. 13C is a right side view. FIG. 14 is a perspective view.

As shown in these figures, the guide block unit 81 includes a base 82, an arm 83, and a guide 8.
4 are integrally formed, and an upper surface 85a of a rib 85 formed on the guide portion 84 forms a guide surface of the sheet. A hole 86 is formed on one side surface of the guide portion 84, and a protrusion 87 is formed on the other side surface so as to fit into the hole 86 (a hole 86 of an adjacent guide block alone). The base 82 has a square hole 8 through which the drive shaft 61 is inserted.
2a is formed.

The movable paper guide 80 is formed by inserting the drive shaft 61 into the square holes 82a of the plurality of guide blocks 81 and fitting the projections 87 with the holes 86 of the adjacent guide blocks 81, as shown in FIG. Is mounted on the drive shaft 61 as shown in FIG.

As shown in FIG. 11, notches 36a, 36a are formed at the edges of the paper feed guide 36 and the paper discharge guide 37, respectively.
37a is formed, and the movable paper guide 80 is
1 and the drive shaft 61 is assembled to the apparatus, the front end portion 85b and the rear end portion 85c of the rib 85
Are in the notches 36a and 37a.

FIG. 15 mainly shows the left sub-frame 34.
FIG.

In the figure, reference numeral 64a denotes a detection piece integrally formed with a gear 64 (see FIG. 2) fixed to the drive shaft 61.

Reference numerals 91 and 92 denote detectors (for example, limit switches) as detecting means. The detectors 91 and 92 are
Lever 9 that swings in contact with detected piece 64a
1a and 92a.
When it oscillates in contact with the controller, a detection signal is sent to control means (not shown). One detector 9
1 is for detecting that the drive shaft 61 is at the standby position, and the other detector 92 is for detecting the rotation end position of the drive shaft 61. The detailed operation will be described later.

The embodiment has been described above.
This embodiment further includes a paper feeding means (for example, a paper feeding roller or a pin tractor), a paper discharging means (for example, a paper discharging roller or a pin tractor), and a control means for controlling the entire apparatus. Have.

Next, the operation of the continuous paper cutting apparatus as described above will be sequentially described mainly with reference to FIGS. 16 to 20 by dividing the continuous paper cutting apparatus into a standby state, a paper feeding operation, and a cutting operation. In addition,
The configuration will be additionally described as necessary.

FIGS. 16A, 16B and 16C are left side views for explaining the operation. 17 to 20 are diagrams mainly showing the operation of the cutting means 50, the link mechanism 60 for the cutting means, and the link mechanism 70 for the pressing means. In these figures, (a) is a left side view, and (b) is a left side view. Is a right side view, and (c) is a front view of the cutting means 50. FIG. 18D is a front sectional view showing the relationship between the cutting means 50 and the movable frame 41 of the pressing means 40.

<Standby state> In the standby state, the motor 65 is stopped, and the link mechanism 60 for the cutting means and the link mechanism 70 for the pressing means are in the state shown in FIG. 17, that is, as shown in FIGS. It is in a state of being left.

At this time, as shown in FIGS. 4 and 17 (c), the cutting means 50 is connected to both ends 50 of the contact portion 50a.
a1,50a1 is, the distance of the support means (paper guide 36 and the paper discharge guide 37) of the continuous paper P of the support surface 36b, the pressing portion to 37b (pressing plate) 42, 42 '(h _2,
are positioned substantially equal degree of distance (see h ₃₎ and h refer _5).

As described above, the urging force of the urging means 43 is applied to the pressing means 40.
0, and its movement is regulated, and FIG.
6 (a).

At this time, as shown in FIG. 4, the distance between the lowermost end (bent portion) of the front lower end 33a of the upper frame 33 and the support surface 36b of the paper feed guide 36, that is, the paper feed port 3
H ₁ height of 8, h ₂ the distance between the lower surface 42a and the support surface 36b of the pressing plate 42 on the upstream side, the abutting portions of the cutting means 50 5
0 a (more precisely, the lowermost end of the contact portion 50 a) and the support surfaces 36 b, 37 b (more precisely, the plane connecting the support surfaces 36 b and 37 b) is h ₃ , the guide surface of the movable frame 41. The distance between the upper end of 41c and the paper discharge guide 37 (more precisely, the plane connecting the upper surface of the paper supply guide 36 and the upper surface of the paper discharge guide 37) is h ₄ , and the lower surface 42′a of the pressing plate 42 ′ on the downstream side. Is the distance between the paper ejection guide 37 and the support surface 37b.
₅ , adjacent to the downstream side of the holding means 40,
The distance between the upper end of the inclined paper guide surface 33c of the upper frame 33 and the support surface 37b of the discharge guide 37 is h ₆ , and the lowermost end (bent portion) of the rear lower end 33b of the upper frame 33 and the discharge guide 37 the height h ₇ of the distance between the support surface 37b i.e. discharge outlet 39, and the thickness of the continuous paper P and t (not _{shown), t <h 1 ≦ h} 2 ≦ h 3 h 3 ≦ h 4 and has a _{h 5 ≦ h 6 t <h} 7 ≦ h 5.

The holding plate 4 of the movable frame 41
2, 42 ', mounting surfaces 41d, 41'd of the holding plates 42, 42' on both sides 41g, 41g, 41'g, 4
1'g protrudes from the mounting surface.

The movable paper guide 80 is shown in FIGS.
As shown in (a), it faces the cutting space C.

<Paper Feeding Operation> In the above state,
The paper feeding means (not shown) is driven, and the continuous paper P is supplied from the paper feeding port 38 onto the cutting space C as shown in FIG. At this time, as described above, t <h ₁ ≦ h ₂ ≦ h ₃ ,
h ₃ ≦ h ₄ , h ₅ ≦ h ₆ , t <h ₇ ≦ h _5, and the pressing plates 42, 42 on the mounting surfaces 41 d, 41 ′ d of the pressing plates 42, 42 ′ of the movable frame 41. ', Both side portions 41g, 41g, 41'g, 41'g protrude from the mounting surface, and the inclined surfaces 42f, 42'f of the holding plates 42, 42' constitute a guide surface of the continuous paper P. As a result, the leading edge of the sheet is smoothly guided, so that a smooth sheet feeding operation can be obtained.

The continuous paper P is supplied such that the perforations Pa are located substantially in the center of the cutting space C.

<Cutting Operation> The cutting operation is performed by driving the motor 65 so that the drive shaft 61 moves from the standby state shown in FIG. 17 to the state shown in FIG.
It is performed by rotating at a stretch.

Hereinafter, the main states will be sequentially described.

FIG. 18 shows a state in which the drive shaft 61 has rotated about 45 ° in the direction of arrow CW from the state shown in FIG.

When the drive shaft 61 starts rotating from the state shown in FIG.
The pressing means 4 is operated by the urging force of the urging means 43 by the operation of
0 starts falling. At this time, the urging force of the urging means 43 acts to assist the rotation of the drive shaft 61 via the link mechanism 70 for the pressing means.

In the course of rotation of the drive shaft 61, the pressing plates 42, 42 'of the pressing means 40 abut the paper feed guide 36 and the paper discharge guide 37 via the continuous paper P, and the continuous paper When P is pressed, the urging force of the urging means 43 is received by the paper feed guide 36 and the paper discharge guide 37.

When the drive shaft 61 further rotates, the arm 62
The second pins 62L2 and 62R2 of L and 62R slide in the elongated holes 72 of the connecting rods 71L and 71R. FIG. 18 shows the holding plates 42 and 42 ′ of the holding means 40.
Shows a state in which the drive shaft 61 is further rotated slightly after contacting with the paper feed guide 36 and the paper discharge guide 37.

On the other hand, from the state shown in FIG.
Starts rotating, the left end 50L of the cutting means 50 starts descending and the right end 50R starts ascending due to the action of the cutting means link mechanism 60 accompanying this. this is,
This is because, as shown in FIG. 10B, the position of the first pin 62R1 of the right arm about the drive shaft 61 is shifted by an angle α with respect to the first pin 62L1 of the left arm. .

FIG. 18 shows a state in which the right end 50R of the cutting means 50 has completely risen, and also shows a state immediately before the cutting of the continuous paper P is started. At this time, the left end 50L of the cutting means 50 is in the position shown in FIG.
As shown in (c), the left end (cut start end) PL of the continuous paper P
Very close to or in contact with. As a result, as shown in FIG. 18C, the cutting unit 50 is inclined by θ with respect to the paper surface of the continuous paper P.

Further, the contact angle θ1 of the bent portion 50a2 (see FIG. 17) of the contact portion 50a facing the cutting start end PL of the continuous paper with the continuous paper P is the contact angle with the cutting end of the continuous paper. The state becomes larger than θ. FIG. 25 shows a schematic diagram of this state.

As shown in FIG. 18D and FIG.
At the right end of the movable frame 41 of the holding means 40, a notch 41f for allowing the cutting means 50 to escape is provided.
Therefore, even if the right end 50R of the cutting means 50 rises,
This does not interfere with the movable frame 41 of the holding means.

The drive shaft 61 is moved from the state shown in FIG.
Starts rotating, the movable paper guide 80 also rotates, and as shown in FIG. 16B, retreats from the cutting space C to secure a passage for the cutting means 50, which will be described later.

When the drive shaft 61 continues to rotate further from the state shown in FIG. 18, as shown in FIG. 19, the operation of the link mechanism 60 for the cutting means causes the left end 5 of the cutting means 50 to move.
0L and the right end 50R descend at substantially the same speed (for example, about 8 cm / s). As a result, as shown in FIG. 19C, the cutting means 50 continuously moves at an angle θ ′ substantially equal to the angle θ described above. The perforation of the paper P is cut from the left side (the cutting start end) PL of the paper. At this time, as described above, the contact portion 50 opposing the cutting start end PL of the continuous paper.
Since the contact angle θ1 ′ of the bent portion 50a2 of “a” is larger than the contact angle θ ′ with respect to the cutting end of the continuous paper, the cutting of the cutting start end PL is performed smoothly and reliably.
Here, θ = θ ′ and θ1 = θ1 ′ are not satisfied because the first arm of the left arm from the center of the drive shaft 61 as shown in FIGS. 9B and 10B. This is because the distance RL to the center of the pin 62L1 is slightly different from the distance RR to the center of the first pin 62R1 of the right arm, and RL <RR. However, rather, since RL <RR, the cutting means 50
Makes a movement similar to a movement of a person grabbing the left end 50L and swinging it down, whereby the continuous paper P is cut smoothly from the left side PL.

The pressing means 40 keeps pressing the continuous paper P between the paper feed guide 36 and the paper discharge guide 37 by the urging force of the urging means 43, similarly to the state shown in FIG. With the rotation of the shaft 61, the arms 62L, 62
R second pins 62L2, 62R2 are connected to connecting rods 71L,
It further moves in the elongated hole 72 of the 71R (see FIG. 19).

FIG. 21 is a schematic diagram showing a state in which the continuous paper P is cut (accurately, a state immediately before cutting), and corresponds to the XXI-XXI view in FIG. 19C. FIG.

As can be seen from this figure, the continuous paper P is held on both sides of the perforation Pa by the pressing plates 42 and 4.
When the cutting means 50 is lowered in a state where the cutting means 50 is sandwiched and held between the sheet feeding guide 36 and the paper discharge guide 37, the continuous paper P is partially wound around the cutting means 50 with the lowering. In such a state, the continuous paper P is eventually cut (divided) at the perforation Pa by further lowering of the cutting means 50.

Here, the radius of the arc portion of the cutting means 50 is r ₁ , and the winding angle of the continuous paper P with respect to the arc portion is β ₁
Then, the winding length L ₁ of the continuous paper P around the cutting means 50 is L ₁ = r ₁ · β ₁ .

On the other hand, when the continuous paper P is fed, the perforation Pa is not always located exactly at the center of the cutting space C due to a transport error or the like. FIG.
In the figure, the state in which the perforation Pa is located at the center of the cutting space C is drawn by a solid line, but the virtual line Pa ′
Or, as shown by Pa ″, there is a possibility that the center part deviates.

However, according to this embodiment,
And contact to the continuous paper cutting means 50 (cut portion) is formed in an arc shape, because the length L ₁ winding described above is obtained, perforations Pa within this length L ₁
, The continuous paper P is reliably cut at the perforation Pa.

Further, as the continuous paper P, a copy paper in which a plurality of papers are stacked is often used. As shown by reference numeral 2 in FIG. 27A, the continuous paper P is normally folded in a zigzag state with a perforation as a fold, and is fed straight from the folded state. Therefore, when the continuous paper is copy paper, a shift occurs between the stacked sheets (so-called interlayer shift occurs), and as a result, a perforated portion of each sheet also shifts.

FIG. 22 shows this state.

In the figure, P ′ is a sheet of three sheets P1,
P2 and P3 are stacked copy paper. When the continuous paper to be cut is such a copy paper P ′, each paper P1, P
The perforations P1a, P2a, and P3a of P2 and P3 are shifted, for example, as shown in FIG.

However, according to this embodiment,
And contact to the continuous paper cutting means 50 (cut portion) is formed in an arc shape, because the length L ₁ winding described above is obtained, perforations within the scope of this length L ₁ P1
Even if the positions of a, P2a, and P3a are shifted, the respective sheets P1, P2, and P3 of the continuous paper (copying paper) P 'are reliably cut at the respective perforations P1a, P2a, and P3a.

Conversely, in this embodiment,
The perforation position is shifted from the center of the cutting space C due to a conveyance error of the continuous paper or the like, and / or the perforation of each paper is cut into the cutting space C because the continuous paper is copy paper.
Even it was shifted from the central part of its so as to be able to reliably cut at perforation, i.e. as described above winding length L ₁ can be obtained, arcuate portion 5 of the cutting means 50
The shape of Oa and the distance between the paper feed guide 36 and the paper discharge guide 37 are set. At least the arc-shaped portion 50a of the cutting means 50 is made of a material having a small coefficient of friction with paper (continuous paper), for example, a galvanized steel plate. This is because the one in which the cutting means 50 is slippery with respect to the sheet is surely cut at the perforation.

As the drive shaft 61 continues to rotate from the state shown in FIG. 19, as shown in FIG. 20, the operation of the link mechanism 60 for the cutting means causes the left end 50L and the right end 50R of the cutting means 50 to move further. 20C at approximately the same speed, and as shown in FIG. 20 (c), the cutting means 50 completely passes below the continuous paper P, and as a result, the continuous paper P is perforated Pa (FIG. 16 (c)). )) Will be completely cut. The reason why the inclination angle θ ″ of the cutting means 50 with respect to the continuous paper P at this time is not the same as the above-described angle θ ′ is as described above.

The pressing means 40 keeps pressing the continuous paper P between the paper feed guide 36 and the paper discharge guide 37 by the urging force of the urging means 43, similarly to the state shown in FIG.
With the rotation of the drive shaft 61, the second pins 62L2, 62R2 of the arms 62L, 62R are connected to the connecting rods 71L, 71R.
Is further moved in the long hole 72. FIG. 20 (a)
As shown in (b), even when the drive shaft 61 has been fully rotated, the second pins 62L2, 6R of the arms 62L, 62R.
The long hole 72 is configured such that a small space 72c is formed between the 2R2 and the lower end of the long hole 72 of the connecting rod 71L, 71R.

The movable paper guide 80 is shown in FIG.
As shown in (5), it rotates with the rotation of the drive shaft 61, and secures a passage for the cutting means 50.

As described above, the continuous paper P has its perforations Pa
Is completely cut by the drive shaft 61.
Is reversed from the state shown in FIG. 20 to the state shown in FIG. 17, and each member also returns to the standby state shown in FIG.

Thereafter, the paper feeding means and the paper discharging means (not shown) are driven, the cut paper CP (see FIG. 16C) is discharged out of the machine, and the next perforated portion is cut into the cutting space C. And the above operation is repeated.

FIG. 23 is a flowchart showing a specific sequence for performing the above-described cutting operation in this embodiment. The sequence of the cutting operation will be described with reference to this flowchart.

(I) In starting the cutting operation,
In step ST1, the counting of the elapsed time T is started by the timer of the control means.

(Ii) In step ST2, it is detected whether or not the drive shaft 61 is at the standby position. This detection is performed as shown in FIG.
As shown in (a), the gear 6 fixed to the drive shaft 61
The detection piece 64a formed integrally with the sensor 4 swings the lever 91a of one of the detectors 91 to make the detector 91 (HP
(Detection) is turned on (that is, a detection signal is transmitted to the control means).

(Iii) If it is determined in step ST2 that one of the detectors 91 is OFF, that is, the drive shaft 61 is not at the standby position, the steps ST3 to ST3 are performed to return the drive shaft 61 to the standby position. In step ST6, the motor 65 is reversely rotated (CCW), and the drive shaft 61 is reversely rotated to return to the standby position. If the drive shaft 61 does not return to the standby state after the lapse of the predetermined time (t1), it is determined that some abnormality has occurred, the motor 65 is stopped in step ST7, and an error is displayed on display means (not shown) in step ST8. Display a message.

More specifically, first, in step ST3, the motor 65 is reversed (CCW), and the drive shaft 61 is reversed. Next, in step ST4, the elapsed time T is equal to the predetermined time t.
It is determined whether or not 1 has been reached. This time t1 is set to be slightly longer than the time normally required for the drive shaft 61 (see FIG. 20) in the normal rotation state to reversely rotate and return to the standby position (see FIG. 17). Therefore, during normal operation, the determination in step ST4 is "No", and the process proceeds to step ST5. In step ST5, the detector 91
Is turned on. When the detector 91 is turned on, it means that the drive shaft 61 has returned to the standby position, so the motor 65 is stopped in step ST6, and the process proceeds to the next step ST9. If the detector 91 is OFF, it means that the drive shaft 61 has not yet returned to the standby position, so the process returns to step ST3 and the above operation is repeated.
If it is determined that 1 has elapsed, it is determined that some abnormality has occurred, the motor 65 is stopped in step ST7, and an error message is displayed on a display means (not shown) in step ST8.

(Iv) If it is determined in step ST2 that one of the detectors 91 is ON, that is, the drive shaft 61 is at the standby position, the cutting means 50 is lowered to cut the continuous paper. Step ST9 to Step S
At T15, the motor 65 rotates forward (C) until the other detector 92 detects the detected piece 64a (see FIG. 15C).
W) to rotate the drive shaft 61 forward. Predetermined time (t2)
If the drive shaft 61 does not move from the standby position after the lapse of time, or if the other detector 92 does not detect the detection target piece 64a after the lapse of a predetermined time (t3), it is determined that some abnormality has occurred, In step ST7, the motor 65 is stopped, and in step ST8, an error message is displayed on display means (not shown).

More specifically, first, in step ST9, the motor 65 is rotated forward (CW), and the drive shaft 61 is rotated forward.

Next, in step ST10, it is determined whether or not the elapsed time T has reached a predetermined time t2. This time t2 corresponds to the time when the drive shaft 61 (FIG. 17 and FIG.
5 (a) rotates forward, and the lever 9 of one of the detectors 91 rotates.
The time normally required for the detector 91 (HP detection) to turn off due to the oscillation of 1a (the time obtained by adding the time required for the determination in step ST5 to turn on when the detector 91 (HP detection) was OFF). ) Is set slightly longer.

Therefore, during normal operation, step S
The determination at T10 is "No", and the process proceeds to step ST11.

In step ST11, the detector 91 sets the OF
F is determined.

If the detector 91 is ON, it means that the drive shaft 61 has not yet completely departed from the standby position, so that the operation returns to step ST9 and the above operation is repeated. If it is determined in step ST10 that the predetermined time t2 has elapsed, it is determined that some abnormality has occurred, and the motor 65 is determined in step ST7.
Is stopped, and in step ST8, an error message is displayed on display means (not shown).

If the detector 91 is turned off within the predetermined time t2, it means that the drive shaft 61 is rotating normally (see FIG. 15 (b)). (CW) and step ST13
Then, it is determined whether or not the elapsed time T has reached the predetermined time t3. This time t3 corresponds to the time when the drive shaft 61 in the standby position
(See FIG. 17 and FIG. 15 (a).) Normally, the detected piece 64a swings the lever 92a of the other detector 92 to turn on the other detector 92 (RP detection). The time is set to be slightly longer than the time required (if it is OFF in step ST2, the time required for the determination in step ST5 to be turned ON) is added.

Therefore, during normal operation, step S
The determination at T13 is "No", and the process proceeds to step ST14.

In step ST14, the other detector (R
It is determined whether or not (P detection) 92 is turned ON.

If the other detector 92 is OFF, it means that the drive shaft 61 has not yet fully rotated, so the flow returns to step ST12 to repeat the above-mentioned operation. If it is determined that the predetermined time t3 has elapsed, it is determined that some abnormality has occurred, the motor 65 is stopped in step ST7, and an error message is displayed on display means (not shown) in step ST8.

If the detector 92 is turned on within the predetermined time t3, it means that the drive shaft 61 has rotated normally, that is, the continuous paper has been cut.
To stop the motor 65, and enter a return operation after step ST16.

(V) The return operation is performed by reversing (CCW) the motor 65 and reversing the drive shaft 61 to return to the standby position in steps ST16 to ST22. Even if the predetermined time (t4) has elapsed, the drive shaft 61
Does not move from the rotation end position (see FIG. 15C).
Alternatively, the standby position (FIG.
If it does not return to (a), it is determined that some abnormality has occurred, the motor 65 is stopped in step ST7, and an error message is displayed on display means (not shown) in step ST8.

More specifically, first, in step ST16, the motor 65 is reversed (CCW), and the drive shaft 61 is reversed.

Next, in step ST17, it is determined whether or not the elapsed time T has reached a predetermined time t4. The time t4 corresponds to the time when the drive shaft 61 at the rotation end position (FIG. 15C)
) Is reversed, and the time normally required until the lever 92a of the other detector 92 swings and the detector 92 (RP detection) is turned off (if it is off in step ST2,
This time is set to be slightly longer than the time required for the determination in step ST5 to be turned ON.

Therefore, during normal operation, step ST
The determination at 17 is "No", and the process proceeds to step ST18.

In step ST18, the other detector 92
It is determined whether (RP detection) has been turned off.

If the detector 92 is ON, the drive shaft 61
Means that it has not yet completely deviated from the fully rotated position (rotation end position), so that step ST1
6, the above operation is repeated. In the process, when it is determined in step ST17 that the predetermined time t4 has elapsed, it is determined that some abnormality has occurred, and the motor 65 is stopped in step ST7. In step ST8, an error message is displayed on display means (not shown).

If the detector 92 is turned off within the predetermined time t4, it means that the drive shaft 61 is normally rotating in reverse. Therefore, the motor 65 is continuously rotated backward (CCW) in step ST19, and in step ST20, It is determined whether or not the elapsed time T has reached the predetermined time t5. This time t
5 is the time normally required for the drive shaft 61 (see FIG. 15 (c)) at the rotation end position to reverse and return to the standby position (see FIG. 15 (a)) (if it is OFF in step ST2). Is set to be slightly longer than the time required for the determination in step ST5 to be turned ON).

Therefore, during normal operation, step S
The determination at T20 is "No", and the process proceeds to step ST21.

In step ST21, one of the detectors (H
It is determined whether or not (P detection) 91 is turned on.

If one of the detectors 91 is OFF, it means that the drive shaft 61 has not returned to the standby position, so the flow returns to step ST19 to repeat the above operation. If it is determined that the predetermined time t5 has elapsed, it is determined that some abnormality has occurred, the motor 65 is stopped in step ST7, and an error message is displayed on display means (not shown) in step ST8.

If the detector 91 is turned on within the predetermined time t5, it means that the drive shaft 61 has returned to the standby position normally, and the motor 65 is stopped in step ST22.

Thus, one cutting operation and one returning operation have been performed.

According to the continuous paper cutting apparatus as described above, the following operational effects can be obtained.

(A) Continuous paper P having perforations Pa
When the continuous paper P is conveyed in a direction orthogonal to the perforation Pa and once stopped, the continuous paper P is provided on both sides of the perforation Pa by a pair of supporting means 36 and 37 and a pair of pressing portions 42 and 42 'of the pressing means 40. And is pressed and supported.

At the time of cutting, a pair of holding portions 42, 42 '
And a contact portion 50a for the continuous paper P to be cut
Is formed in an arc shape as viewed from the perforation Pa direction, extends in the same direction as the perforation Pa, and the cutting means 50 longer than the perforation Pa is formed by the link mechanism 60 for cutting means.
By moving toward the perforation while being inclined with respect to the continuous paper P, the continuous paper P is cut at the perforation Pa.

According to this continuous paper cutting apparatus, the cutting means 50 determines that the contact angle θ1 of the contact portion 50a with respect to the cutting start end PL of the continuous paper P is greater than the contact angle θ1 with respect to the cutting end of the continuous paper. Since it is configured to be larger than the tangent angle θ,
The cutting start end PL is relatively easily cut.

Therefore, the continuous paper P can be cut smoothly.

In addition, it is possible to reduce the size of the device, especially the height of the device.

More specifically, the smooth cutting of the continuous paper is performed by the abutting portion 50 of the cutting means 50 with the continuous paper P.
Can be achieved by setting the contact angle of the entirety from the cutting start PL to the cutting end PR as a whole, for example, to θ1.

However, if the contact angle of the contact portion 50a is set to be generally large from the cutting start end to the cutting end, the height of the cutting means 50 will increase by that amount, and as a result, the device It becomes large.

On the other hand, according to the continuous paper cutting apparatus of this embodiment, the cutting means 50 determines that the contact angle θ1 of the contact portion with respect to the cutting start end PL of the continuous paper P is smaller than that of the continuous paper. Since the contact angle θ with respect to the cutting end portion is set relatively small as compared with the contact angle θ with respect to the terminal end portion PR, conversely, the height of the cutting means 50 is reduced accordingly. As a result, the size of the apparatus can be reduced.

That is, according to the continuous paper cutting apparatus of this embodiment, the continuous paper P can be smoothly cut from the cutting start end PL to the cutting end PR, and the size can be reduced. Can be.

(B) Regarding the pressing force of the pressing means 40 on the continuous paper P, the cutting start end PL of the cutting means 50
In the case where the pressing force W1 is set to be larger than the pressing force W2 at the cutting end PR, the continuous paper P
Can be further smoothly and reliably cut from the cutting start end PL to the cutting end PR.

(C) The cutting means 50 can reliably cut the continuous paper P at the perforation Pa because the contact portion 50a to the continuous paper P is formed in an arc shape as viewed from the perforation direction. It is possible.

Assuming that the cutting means is composed of, for example, a sharp blade, the continuous paper P is displaced from the perforation Pa unless the blade is cut properly along the perforation Pa because the sharpness is sharp. It is cut at the position.

On the other hand, according to the continuous paper cutting apparatus of this embodiment, the abutting portion 50 of the cutting means 50 to the continuous paper P
Since a is formed in an arc shape as viewed from the perforation direction, even if the cutting means 50 abuts on a position slightly deviated from the perforation Pa, the continuous paper P is torn along the perforation Pa. Will be cut off.

Therefore, according to the configuration of this embodiment, it is possible to reliably cut the continuous paper P at the perforations Pa.

(D) The cutting mechanism link mechanism 60 includes a drive shaft 61, a pair of arms 62L and 62R provided at both ends of the drive shaft 61 and rotating together with the drive shaft 61, and these arms and the cutting means. And a pair of connecting rods 63L and 63R respectively connected to both ends of the arm 50L.
(The pin 62L1) between the arm 62R and the connecting rod 63R, and the connecting part (the pin 62R1) between the other arm 62R and the connecting rod 63R.
) Is provided with the phase shifted by an angle α around the drive shaft 61, so that the link mechanism 60 for the cutting means can be simplified.

The mechanism for causing the cutting means 50 to perform the above-described movement is, for example, a mechanism using a cylinder (for example, a mechanism in which both ends of the cutting means are supported by separate cylinders),
Alternatively, it can be constituted by a mechanism using a cam.

However, a mechanism using a cylinder has a problem that the structure becomes complicated and the weight increases. Further, if a desired stroke of the cutting means is to be obtained by a mechanism using a cam, the weight of the cam itself is increased, so that the weight of the entire mechanism is also increased.

On the other hand, according to the configuration of this embodiment, the link mechanism for the cutting means can be simplified, and therefore, the weight can be reduced.

(E) The link mechanism 60 for the cutting means and the link mechanism 70 for the pressing means have a common and single drive shaft 6.
1, the structure of both mechanisms is simplified and the size of the apparatus is reduced.

(F) After the drive shaft 61 is cut by the cutting means 50, the drive shaft 61 reverses and returns to the standby position.
It is possible to further reduce the size of the device.

If the drive shaft makes one rotation and returns to the standby position, a space is required that allows at least one link constituting the link mechanism to make one rotation. The device is correspondingly increased in size.

On the other hand, according to the continuous paper cutting apparatus of this embodiment, since the drive shaft 61 rotates in the reverse direction and returns to the standby position, the space is not required, and the apparatus can be downsized accordingly. Can be achieved.

FIG. 24 is a schematic left side view of a printer incorporating the above continuous paper cutting device.

In this figure, the PC is the continuous paper cutting device described above.

Reference numeral 100 denotes a case of the printer, and 101 denotes a frame provided in the case 100.

The continuous paper cutting device PC is detachably attached to the frame 101 by using a locking portion such as a pin 101a provided on the frame 101 of the printer.

Reference numerals 102 and 103 denote frames 10 respectively.
1 is a pin tractor attached to the drive shaft 1
When the drive mechanism 04 is driven by a drive mechanism (not shown), the continuous paper P having holes formed with the pins of the pin tractor can be conveyed along both side edges. This printer has two paper feed paths, and the pin tractor 102 or 1
03 feeds the continuous paper P. As described above, the continuous paper P is usually supplied in a state of being folded in a zigzag shape. A paper guide (not shown) is provided on the continuous paper transport path.

Reference numeral 105 denotes a print head for printing on continuous paper, and 1
06 is a platen. Various types of heads can be used as the print head 105, but when the continuous paper P is copy paper, an impact dot head is used.

Reference numeral 107 denotes a pair of conveying rollers, which conveys the printed continuous paper toward the continuous paper cutting device PC. Therefore, the transport roller pair 107 constitutes a sheet feeding unit of the continuous sheet cutting device PC.

Reference numeral 108 denotes a pair of paper discharge rollers serving as paper discharge means, and discharges the paper CP cut by the continuous paper cutting device PC to the outside of the machine.

The discharged sheets are stacked and held on a discharge tray 109.

As described above, when the continuous paper cutting device PC is incorporated in a printer, at least the transport roller pair 107 of the printer can be used as the paper feeding means of the continuous paper cutting device PC. The device PC itself can be further miniaturized.

As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the present invention.

For example, (1) the cutting means is a substantially semi-cylindrical rod-shaped main body 50b like a cutting means 50 'shown in FIG. Angle imparting member 5
0c. 26B is an end view taken along line bb in FIG. 26A, and FIG. 26C is an end view taken along line cc in FIG.

(2) The link mechanism for the cutting means and the link mechanism for the holding means can also be constituted by mechanisms using cams, respectively. Further, it can also be constituted by a mechanism using a cylinder.

(3) The upper frame 33 may be openable and closable.

(4) The elongated hole 72 may be provided on the pin 45 side.

(5) The link mechanism for the cutting means and the link mechanism for the holding means may be driven by different drive shafts.

[0172]

According to the continuous paper cutting apparatus of the first aspect, the continuous paper can be cut smoothly from the cutting start end to the cutting end, and the size can be reduced.

[0173]

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of an embodiment of a continuous paper cutting device according to the present invention, wherein (a) is a plan view, (b) is a front view,
(C) is a left side view, and (d) is a right side view.

2 is an enlarged view of the left side in FIG. 1, wherein (a) is a partial plan view, (b) is a partial front view, and (c) is a left side view.

3 is an enlarged view of the right side in FIG. 1, (a) is a partial plan view, (b) is a partial front view, and (c) is a right side view.

FIG. 4 mainly shows an upper frame 33, a paper feed guide 36,
Paper ejection guide 37, holding means 40, and cutting means 50
FIG.

FIG. 5 is a partial perspective view showing a movable frame 41 of the holding means 40.

6 (a), (b), and (c) show the holding plate 4 respectively.
The perspective view which shows the example of 2,42 '.

7A is a partial perspective view showing a structure for attaching the holding plates 42 and 42 'to the movable frame 41, FIG. 7B is a partial perspective view of the movable frame, and FIG. 7C is a drawing showing the holding plates 42 and 42'. FIG. 3D is a perspective view of a single piece, and FIG. 4D is a partial front cross-sectional view showing a mounting structure of the holding plates 42 and 42 ′ to the movable frame 41.

8A is a perspective view showing the vicinity of the left end of the cutting means 50, and FIG.

9A and 9B are views showing a link mechanism for cutting means 60 and a link mechanism for holding means 70, wherein FIG. 9A is a front view of a left side portion, and FIG. 9B is a left side view.

FIGS. 10A and 10B are views showing a link mechanism for cutting means 60 and a link mechanism for holding means 70, wherein FIG. 10A is a front view of a right portion, and FIG.

FIG. 11 is a partially enlarged perspective view showing details of a cutting space C.

FIG. 12 is a front view showing a state where the movable paper guide 80 is mounted on the drive shaft 61.

13A and 13B are views showing a guide block unit 81, and FIG.
Is a front view, (b) is a left side view, and (c) is a right side view.

FIG. 14 is a perspective view showing a guide block unit 81.

15 (a), (b) and (c) are left side views mainly showing the left sub-frame 34, respectively.

16 (a), (b) and (c) are left side views for explaining the operation.

17A and 17B are diagrams mainly showing the operation of the cutting means 50, the link mechanism 60 for the cutting means, and the link mechanism 70 for the pressing means, wherein FIG. 17A is a left side view, FIG. 17B is a right side view, and FIG.
Is a front view of the cutting means 50.

FIG. 18 is a view showing the same operation, (a) is a left side view,
(B) is a right side view, (c) is a front view of the cutting means 50,
(D) is a front sectional view showing the relationship between the cutting means 50 and the movable frame 41 of the pressing means 40.

FIG. 19 is a view showing the operation, (a) is a left side view,
(B) is a right side view, and (c) is a front view of the cutting means 50.

FIG. 20 is a view showing the operation, (a) is a left side view,
(B) is a right side view, and (c) is a front view of the cutting means 50.

FIG. 21 is a schematic view showing a state where the continuous paper P is cut, and is a view corresponding to the XXI-XXI view in FIG. 19C.

FIG. 22 is a schematic diagram showing a state in which the copy paper P ′ is cut, and is a diagram corresponding to the XXI-XXI view in FIG. 19C.

FIG. 23 is a flowchart showing a specific sequence for performing a cutting operation.

FIG. 24 is a schematic left side view of a printer incorporating the continuous paper cutting device.

FIG. 25 is an operation explanatory view.

26 (a) is a front view, FIG. 26 (b) is a bb end view in FIG. 26 (a), and FIG. 26 (c) is a cc end view in FIG. .

FIGS. 27 (a) to (d) are explanatory views of a conventional technique.

FIGS. 28A and 28B are partial plan views of continuous paper.

[Explanation of symbols]

 P Continuous paper Pa Perforation PL Cutting start end PR Cutting end 36 Paper feed guide (supporting means) 37 Discharge guide (supporting means) 40 Pressing means 42, 42 'Pressing section 50 Cutting means 50a Contact section

Claims (1)

[Claims] An apparatus for transporting continuous paper having perforations in a direction perpendicular to the perforations and temporarily stopping the continuous paper, and cutting the continuous paper at the perforations when the continuous paper is stopped. A pair of supporting means for supporting the continuous paper on both sides of the perforation; a pressing means having a pair of pressing portions capable of pressing the continuous paper between the supporting means on both sides of the perforation; The abutting portion to the continuous paper to be cut is formed between the portions, and is formed in an arc shape as viewed from the perforation direction and is formed to be longer than the perforation.
Cutting means for moving toward the perforation while being inclined with respect to the continuous paper, wherein the contact angle of the contact portion with respect to the cutting start end of the continuous paper is more continuous. A continuous paper cutting apparatus characterized in that the continuous paper cutting apparatus is configured to be larger than a contact angle with respect to a paper cutting end portion.