JP3261995B2 - Continuous paper cutting device - Google Patents

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, one disclosed in Japanese Patent Application Laid-Open No. Hei 6-91588 is known.

FIG. 25 is a diagram showing one described in the publication.

[0005] In FIG. 25A, reference numeral 1 denotes a continuous paper cutting device, in which a continuous paper 2 having a perforation for cutting is engaged with a pin tractor 3 and is taken into the continuous paper cutting device 1. The continuous paper 2 fed from the pin tractor 3 is conveyed by a paper feed roller 4 and a pinch roller 5, and further over a paper cutting substrate 6, 7, a discharge roller 8 and a pinch roller 9.
And transported. The continuous paper 2 is transported so that its perforations are located in the gap between the substrates 6 and 7, and cut at this position. The cut sheets are conveyed one by one by a sheet discharge roller 8 and a pinch roller 9 and stored in a stacker 10.

The paper cutting portion will be described with reference to FIG.

[0006] The shaft 11 having the flange 18 is attached to the paper presser 1.
2 (12 ') and is fixed to the cutting blade mounting member 13. The crank 15 attached to the drive shaft 14 transmits the movement obtained by the rotation of the drive shaft 14 to the cutting blade attachment 13 via the connecting rod 16. The movement obtained by the rotation of the drive shaft 14 is a reciprocating vertical movement since the shaft 17 (see FIG. 25 (e)) fixed to the housing penetrates the hole of the cutting blade mounting member 13.

The paper presser 12 is supported by the flange 18 of the shaft 11, and the cutting blade 19 and the paper presser 12 are at a sufficient distance from the substrates 6 and 7 as a paper receiving table. At this point, the perforation of the sheet is conveyed to the center of the gap between the sheet receiving tables 6 and 7 (see FIG. 25C). The rotation of the drive shaft 14 rotates the crank 15, rotates the connecting rod 16 by the crank, and the cutting blade 19 fixed to the cutting blade mounting member 13 descends. The shaft 11 also descends with this descending, so that the lower surface of the paper presser 12 reaches the paper receiving tables 6 and 7 soon.

The cutting blade 19 further descends while compressing the spring 20 even when the paper holders 12 and 12 ′ abut against the paper receiving trays 6 and 7, and eventually reach the perforated portion of the paper 2. Then, the sheet 2 is torn from the perforated portion (see FIG. 25D). A large force acts on the sheet 2 by the contact of the cutting blade 19, but since the paper presser 12 presses the paper by the repulsive force of the spring 20, the paper 2 together with the cutting blade 19 is inserted into the gap between the paper receiving tables 6 and 7. 2 is never drawn.

The rotation of the drive shaft 14 raises the cutting blade 19, and eventually pulls up the paper presser 12. Here, the paper feed roller 4 and the paper discharge roller 8 rotate to feed the cut paper 2 to the stacker 10 and convey the succeeding continuous paper 2 to a predetermined position to repeat a series of operations.

Further, as a conventional continuous paper cutting apparatus, for example, one disclosed in Japanese Patent Application Laid-Open No. 50-96136 is known.

FIG. 26 is a diagram showing one described in the publication.

In FIG. 26A, 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.

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 at substantially 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 denotes a plate-shaped blunt device having a rounded tip portion 25a which can move up and down.

In order to cut the sheet 2 from the perforations 2a, the holding members 23, 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 shot down to the center of the sheet over the entire sheet width.

As shown in FIG. 26 (b), a blunt unit 25 having a rounded tip 25a is used. With such a blunt device, the paper starts to be pressed from the lowermost end 25a ', and as shown in FIG. 26D, 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.

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.

[0018]

Among the above-described conventional continuous paper cutting apparatuses, FIG. 25 (b) shows the conventional continuous paper cutting apparatus.
As is clear from FIG.
Lower end 19a of the paper holder 12, 12 '.
It is located significantly above a).

Therefore, when the continuous paper 2 is supplied to the apparatus, the leading end of the continuous paper is likely to enter the space between the paper pressers 12 (below the cutting blade 19), so that the paper is liable to be jammed. There is.

In FIG. 26, as is clear from FIG. 26B, the surface 25a of the blunt device 25 facing the continuous paper is inclined.
As can be seen from FIG. 2A, a part of the blunt device (at least the lowermost end portion 25a ') protrudes below the lower surfaces of the holding members 23 and 24, and the other portion (at least the uppermost end portion) holds. It will be located considerably above the lower surfaces of the tools 23 and 24. Alternatively, if a part of the blunt device does not protrude below the lower surfaces of the holding members 23 and 24, the most part of the surface 25a of the blunt device 25 facing the continuous paper may be the holding member 23. , 24 are located considerably above the lower surface. Such a situation
The same applies to the blunt device 26 shown in FIG.

Accordingly, in the apparatus shown in FIG. 26, when the continuous paper 2 is supplied to the apparatus, the leading end of the continuous paper is located below the lower surfaces of the pressers 23 and 24 of the blunt device (see FIG. 26). For example, there is a drawback that the sheet is likely to hit the lower end portion 25a ') or to enter the space between the holding members 23 and 24 (below the blunt device), thereby easily causing paper jam.

That is, in any of the conventional apparatuses, there is a problem that it is difficult to obtain a smooth continuous paper feeding state.

It is an object of the present invention to provide a continuous paper cutting apparatus which solves the above-mentioned problem and can obtain a continuous paper continuous feeding state.

[0024]

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. Cutting means extending in the same direction as the perforations, and longer than the perforations, and, when the continuous paper is being conveyed, the cutting means is disposed at a distance substantially equal to the distance of the pressing portion with respect to the supporting surface of the continuous paper of the supporting means. Forward in distance A cutting mechanism link mechanism for holding the abutting portion so as to be substantially parallel to the support surface, and moving the cutting means toward the perforation in a state of being inclined with respect to the continuous paper at the time of cutting. It is characterized by having.

A continuous paper cutting device according to a second aspect of the present invention is the continuous paper cutting device according to the first aspect, wherein a pressing portion of the pair of pressing portions, which is located downstream of the cutting means in the continuous paper transporting direction, A guide surface that guides the continuous paper between the pressing unit located on the downstream side and the supporting unit located on the downstream side of the pair of supporting units is provided between the cutting unit and the cutting unit during paper conveyance. Is characterized by being formed by a part of.

According to a third aspect of the present invention, in the continuous paper cutting device according to the first or second aspect, the link mechanism for the cutting means, when the continuous paper is conveyed, switches the cutting means to the support surface with respect to the support surface. The contact portion is held so as to be substantially parallel to the support surface at a distance slightly longer than the distance of the pressing portion.

A continuous paper cutting device according to a fourth aspect of the present invention is the continuous paper cutting device according to the first, second, or third aspect, wherein the link mechanism for the cutting means is provided at a drive shaft and at both ends of the drive shaft. A pair of arms that rotate with the drive shaft,
With a pair of connecting rods respectively connected to these arms and both ends of the cutting means, a connecting portion of one arm and the connecting rod,
The connecting portion between the other arm and the connecting rod is provided so as to be out of phase with respect to the drive shaft.

[0028]

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, it is arranged between a pair of pressing portions, and the contact portion with the continuous paper to be cut is formed in an arc shape as viewed from the perforation direction, extends in the same direction as the perforation, and extends in the same direction as the perforation. The continuous paper is cut at the perforation by moving the longer cutting means toward the perforation by the cutting mechanism link mechanism while being inclined with respect to the continuous paper.

According to the continuous paper cutting apparatus of the first aspect, when the continuous paper is conveyed, the cutting mechanism uses the link mechanism for the cutting means to cause the cutting means to press the holding means against the continuous paper supporting surface of the supporting means. At a distance approximately equal to the distance of the portion, the contact portion formed in an arc shape when viewed from the perforation direction is held so as to be substantially parallel to the support surface, so that this arc-shaped contact portion Acts to guide the leading end of the continuous paper together with the pair of pressing portions.

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

According to the continuous paper cutting apparatus of the second aspect,
2. The continuous paper cutting device according to claim 1, wherein the continuous paper is cut between a pressing portion of the pair of pressing portions located downstream of the cutting device in the continuous paper transport direction and the cutting device during continuous paper transport. Since a guide surface for guiding between the holding part located on the downstream side and the supporting means located on the downstream side of the pair of supporting means is formed, continuous passing from the cutting means toward the downstream direction. The paper is reliably guided between the holding portion located on the downstream side and the supporting means.

Therefore, according to the continuous paper cutting device of the second aspect, a smoother feeding state of the continuous paper can be obtained.

In addition, since the guide surface is formed by a part of the pressing means, there is no need to provide a separate guiding means other than the pressing means.

According to the continuous paper cutting device of the third aspect,
3. The continuous paper cutting device according to claim 1, wherein the link mechanism for the cutting unit causes the cutting unit to contact the cutting unit at a distance slightly longer than a distance of the pressing unit from the support surface when the continuous paper is transported. 4. Since the portion is held so as to be substantially parallel to the support surface, the cutting means comes into contact with and guides the continuous paper only when the continuous paper attempts to enter between the pair of pressing portions.

Therefore, according to the continuous paper cutting device of the third aspect, a smoother feeding state of the continuous paper can be obtained.

According to the continuous paper cutting device of the fourth aspect,
4. A continuous paper cutting apparatus according to claim 1, wherein said link mechanism for cutting means comprises a drive shaft, and a pair of arms provided at both ends of said drive shaft and rotating together with said drive shaft. An arm and a pair of connecting rods respectively connected to both ends of the cutting means, and a connecting part between one arm and the connecting rod and a connecting part between the other arm and the connecting rod are arranged around the drive shaft. Are provided out of phase with each other, so that the cutting mechanism link mechanism can be simplified.

The link mechanism for the cutting means according to the first aspect may be constituted by, for example, a mechanism using a cylinder (for example, a mechanism in which both ends of the cutting means are supported by separate cylinders) or a mechanism using a cam. Is possible.

However, a mechanism using a cylinder has a disadvantage 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 structure of the fourth aspect, the link mechanism for the cutting means can be simplified, and therefore, the weight can be reduced.

[0042]

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

FIG. 1 is a diagram 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 left and right, 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 portion 33 a bent to form a slit-shaped paper supply port 38 with the paper supply 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 pressing 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.

As described later, the press plates 42, 42 'press the continuous paper P on their lower surfaces 42a, 42'a. Therefore, 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, that is, the paper feed guide 36 and the paper discharge 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.

The pressing means 40 is controlled by the urging means 43
Although it is constantly urged toward the paper feed guide 36 and the paper discharge guide 37, its movement is regulated by a link mechanism 70 for a pressing means described later.

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
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)).

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 is 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 sub-frames, and the guide block 51 is guided to the upper piece 34a of the left sub-frame. 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 holding 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. The 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, 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 FIGS.
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 show 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 provided 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 into a standby state, a paper feeding operation, and a cutting operation. In addition,
The configuration will be additionally described as necessary.

FIGS. 16 (a), 16 (b) and 16 (c) are left side views for explaining the operation, respectively. FIGS. 17 to 20 mainly show the cutting means 50, the link mechanism 60 for the cutting means, and the link mechanism 60 for the pressing means. 70 is a diagram showing the operation of 70, in each of these figures (a) is a left side view, (b) is a right side view,
(C) is a front view of the cutting means 50. FIG.
(D) 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 FIG. 4 and FIG. 17C, the cutting means 50 is provided with support surfaces 36b, 3 of the continuous paper P of the support means (feeding guide 36 and discharge guide 37).
At a distance (see h3) substantially equal to the distance (see h2, h5) between the holding parts (holding plates) 42, 42 'with respect to 7b, the contact part 50a is in a state substantially parallel to the support surfaces 36b, 37b (in a substantially horizontal state). ). The contact portion 50a
Is the distance (h) of the holding portion with respect to the support surfaces 36b and 37b.
At a distance slightly longer (see h3) than the support surfaces 36b and 37b, the support surfaces are substantially parallel to each other.

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
8 is h1, the distance between the lower surface 42a of the upstream holding plate 42 and the support surface 36b is h2, and the contact portion 5 of the cutting means 50
The distance between 0a (more precisely, the lowermost end of the contact portion 50a) and the support surfaces 36b, 37b (more precisely, the plane connecting the support surfaces 36b and 37b) is h3, and the guide surface 41c of the movable frame 41. The distance between the upper end of the paper discharge guide 37 (more precisely, the plane connecting the upper surface of the paper feed guide 36 and the upper surface of the paper discharge guide 37) is h4, and the lower surface 42'a of the downstream pressing plate 42 ' The distance between the paper guide 37 and the support surface 37b is h
5, adjacent to and downstream 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 h6, and the lowermost end (bent portion) of the rear lower end 33b of the upper frame 33 and the discharge guide 37 Assuming that the distance from the support surface 37b, that is, the height of the discharge port 39 is h7 and the thickness of the continuous paper P is t (not shown), t <h1≤h2≤h3 h3≤h4 h5≤h6 t <h7≤ h5.

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 <h1 ≦ h2 ≦ h3,
h3.ltoreq.h4, h5.ltoreq.h6, t <h7.ltoreq.h5, and both sides 41g of the holding plates 42, 42 'on the mounting surfaces 41d, 41'd of the holding plates 42, 42' of the movable frame 41. 41g, 41'g, and 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. The leading end is smoothly guided, so that a smooth paper 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 been 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. 17, the link mechanism 70 for the pressing means accompanying the rotation is started.
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.

During the 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. Therefore, when the drive shaft 61 further rotates, the second pins 6 of the arms 62L and 62R are rotated.
2L2 and 62R2 are long holes 72 of connecting rods 71L and 71R.
You will slide inside. FIG. 18 shows the pressing means 4
This shows a state in which the drive shaft 61 is further rotated slightly after the zero pressing plates 42 and 42 ′ come into contact 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 is started. At this time, the left end 50L of the cutting means 50 is shown in FIGS. 16 (b) and 18 (c).
As shown in the figure, the left end PL of the continuous paper P is very close to or in contact with the left end PL. As a result, the cutting means 50
As shown in FIG. 18 (c), the state is inclined by θ with respect to the paper surface of the continuous paper P.

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.

Further, 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 from the state shown in FIG. 18, as shown in FIG. 19, the action of the cutting means link mechanism 60 accompanying this 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 PL of the paper. As described above, since the cutting unit 50 cuts the continuous paper P in an inclined state, the cutting is performed smoothly. Here, the reason why θ = θ ′ is not satisfied is that FIG.
As shown in FIG. 10B and FIG.
RL from the center of the left arm to the center of the first pin 62L1 of the left arm and the distance RR from the center of the first pin 62R1 of the right arm are slightly different, and RL <RR. Because. However, rather, RL <
Due to the RR, the cutting means 50 makes a movement close to the movement of a person grabbing and swinging down the left end 50L, whereby the continuous paper P is smoothly cut from the left side PL thereof. The Rukoto.

The pressing means 40 continues to press the continuous paper P between the paper feed guide 36 and the paper discharge guide 37 with the same magnitude of urging force of the urging means 43, as in the state shown in FIG. With the rotation of the drive shaft 61, the second pins 62L2 and 62R2 of the arms 62L and 62R further move in the elongated holes 72 of the connecting rods 71L and 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 the 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-shaped portion of the cutting means 50 is r1, and the winding angle of the continuous paper P with respect to the arc-shaped portion is β1.
Then, the winding length L1 of the continuous paper P around the cutting means 50 is L1 = r1.beta.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,
The contact portion (cut portion) of the cutting means 50 with the continuous paper is formed in an arc shape, and the above-mentioned winding length L1 is obtained. Therefore, the perforation Pa within the range of this length L1 is obtained.
, The continuous paper P is reliably cut at the perforation Pa.

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. 25A, the continuous paper P is normally folded in a zigzag state with perforations as folds, and is fed straight from the folded state. Therefore, if 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,
The contact portion (cut portion) of the cutting means 50 with the continuous paper is formed in an arc shape, and the above-mentioned winding length L1 is obtained. Therefore, the perforation P1 is within the range of this length L1.
Even if the positions of a, P2a, and P3a are shifted, the sheets P1, P2, and P3 of the continuous sheet (copying sheet) P 'can be reliably cut at the perforations P1a, P2a, and P3a.

In other words, 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 if it is displaced from the central portion of the cutting means 50, the arc-shaped portion 5 of the cutting means 50 can be reliably cut at the perforation, that is, so as to obtain the above-mentioned winding length L1.
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 further 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 is the same as the state shown in FIG.
Is continuously pressed between the paper feed guide 36 and the paper discharge guide 37, and the arm 62 is rotated with the rotation of the drive shaft 61.
The second pins 62L2 and 62R2 of L and 62R move further in the elongated holes 72 of the connecting rods 71L and 71R. In addition,
As shown in FIGS. 20A and 20B, even when the drive shaft 61 is fully rotated, the second pins 62L2 and 62R2 of the arms 62L and 62R and the elongated holes 7 of the connecting rods 71L and 71R.
The long hole 72 is configured such that a small space 72c is formed between the lower hole 2 and the lower end of the second hole 2.

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 target 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 the flow returns to step ST9 to repeat the above operation. 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. 15B), and the motor 65 is continuously rotated forward in step ST12. (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 and the above operation is repeated. 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 in steps ST16 to ST22 by rotating the motor 65 in the reverse direction (CCW), rotating the drive shaft 61 in the reverse direction, and returning to the standby position. 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, if 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, so that 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 that the operation 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.

As described above, 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 is
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 on 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 the continuous paper cutting device, when the continuous paper P is transported, the link mechanism 6 for the cutting means is used.
As shown in FIG. 4, the cutting means 50 makes the cutting means 50 substantially equivalent to the distance (h2, h5) of the holding portions 42, 42 'to the supporting surfaces 36b, 37b of the continuous paper P of the supporting means 36, 37. At the distance (h3), the abutting portion 50a formed in an arc shape as viewed from the perforation direction has the support surfaces 36b, 3b.
7b, the arc-shaped abutting portion 50a, together with the pair of pressing portions 42, 42 ', is the leading end of the continuous paper P (the cut portion after cutting).
Acts to guide.

Therefore, according to this continuous paper cutting device, a smooth feeding state of the continuous paper P can be obtained.

(B) A diagram is shown between the pressing portion 42 'of the pair of pressing portions 42, 42' located downstream of the cutting means 50 in the continuous paper transport direction and the cutting means 50 during continuous paper transport. As shown in FIG. 4, the holding portion 42 ′ for positioning the continuous paper P on the downstream side and the pair of support means 36, 3
7 has a guide surface 41c for guiding between the support means 37 and the cutting means 50.
From the continuous paper P passing in the downstream direction,
The guide is guided between the holding portion 42 ′ located on the downstream side and the support means 37.

Therefore, a smoother feeding state of the continuous paper P can be obtained.

Further, since the guide surface 41c is formed by the movable frame 41 which is a part of the holding means 40, there is no need to provide any guide means other than the holding means 40.

(C) As shown in FIG. 4, when the continuous paper P is transported, the
At a distance (h3) slightly longer than the distance (h2, h5) of the pressing portions 42, 42 'to the support surfaces 36b, 37b of the support means 36, 37.
b, 37b, so as to be substantially parallel to each other.
The guide will come into contact with this only when trying to enter between.

Accordingly, the cutting means 50 does not unnecessarily interfere with the continuous paper P, and a smoother feeding state of the continuous paper P can be obtained.

(D) The link mechanism 60 for the cutting means 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 drawback 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 structure of this embodiment, the link mechanism for the cutting means can be simplified, and the weight can be reduced.

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

(F) 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 formed of, for example, a sharp blade, the continuous paper P is displaced from the perforated line Pa unless the blade is cut properly along the perforated line 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 perforation Pa.

(G) The drive shaft 61 is reversed and returns to the standby position after being cut by the cutting means 50.
It is possible to reduce the size of the device.

When the drive shaft makes one rotation and returns to the standby position as in the conventional device shown in FIG. 25, at least one link constituting the link mechanism can make one rotation. Since a certain amount of space is required, the size of the apparatus increases accordingly.

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 continuous paper cutting device as described above.

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

90 is a case of the printer, 91 is a case 9
0 is a frame provided in the frame.

The continuous paper cutting device PC is detachably attached to the frame 91 by using a locking portion such as a pin 91a provided on the frame 91 of the printer.

Reference numerals 92 and 93 denote pin tractors mounted on the frame 91, respectively. Holes for engaging the pins of the pin tractor along both side edges when the drive shaft 94 is driven by a drive mechanism (not shown). Can be conveyed. This printer has two paper feeding paths, and the continuous paper P is transported by the pin tractor 92 or 93. 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.

A print head 95 prints on continuous paper.
Is a platen. Various types of heads can be used as the print head 95, but when the continuous paper P is copy paper, an impact dot head is used.

Reference numeral 97 denotes a pair of transport rollers, which transports the printed continuous paper toward the continuous paper cutting device PC. Therefore, the transport roller pair 97 constitutes a sheet feeding unit of the continuous sheet cutting device PC.

Reference numeral 98 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 99.

As described above, when the continuous paper cutting device PC is incorporated in the printer, at least the pair of conveying rollers 97 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 link mechanism for the cutting means and the link mechanism for the pressing means can be constituted by mechanisms using cams, respectively. Further, it can also be constituted by a mechanism using a cylinder.

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

(3) The cutting means may be such that the contact portion to the continuous paper is formed in an arc shape as viewed from the perforation direction, and does not necessarily have to be an arc shape as a whole.

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

(5) Pressing plate 42 of movable frame 41,
42 ′ mounting surfaces 41d, 41′d projections 41g, 4
Although 1′g is formed before and after the pressing plate 42 in the above-described embodiment, it is sufficient to form 1′g only at least on the front side (upstream side in the sheet feeding direction).

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

[0186]

According to any of the continuous paper cutting devices described in claims 1 to 4, a continuous paper can be smoothly fed.

Further, according to the continuous paper cutting device of the second aspect, a more smooth continuous paper feeding state can be obtained.

According to the continuous paper cutting device of the third aspect,
An even smoother feeding state of the continuous paper can be obtained.

According to the continuous paper cutting device of the fourth aspect,
The link mechanism for the cutting means is simplified, and therefore,
Lightening is also achieved.

[0190]

[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.

FIGS. 25 (a) to (e) are explanatory views of a conventional technique.

26 (a) to (d) are explanatory diagrams of a conventional technique.

[Explanation of symbols]

 P Continuous paper Pa Perforation 36 Paper feed guide (supporting means) 37 Discharge guide (supporting means) 40 Pressing means 41c Guide surface 42, 42 'Pressing part 43 Urging means 50 Cutting means 60 Link mechanism for cutting means 61 Drive shaft 62L, 62R Arm 63L, 63R Connecting rod 70 Link mechanism for holding means 71L, 71R Connecting rod

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-91588 (JP, A) JP-A-50-96136 (JP, A) JP-A-6-71600 (JP, A) JP-A-3-91 92295 (JP, A) JP-A-56-144182 (JP, A) JP-A 7-8352 (JP, U) JP-A 62-165900 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) B26F 3/02 B41J 11/66-11/70

Claims (4)

(57) [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; Cutting means which is arranged between the sections and which is in contact with the continuous paper to be cut, is formed in an arc shape when viewed from the perforation direction, extends in the same direction as the perforations, and is longer than the perforations; During the conveyance, the cutting means is held such that the contact portion is substantially parallel to the support surface at a distance substantially equal to the distance of the pressing portion to the support surface of the continuous paper of the support means, When cutting, disconnect Continuous paper cutting apparatus comprising: the cutting means link mechanism for moving toward the perforations while inclining the stages relative to the continuous paper, the. 2. A continuous paper is positioned on the downstream side between a pressing part of the pair of pressing parts which is located downstream of the cutting means in the continuous paper transport direction and a cutting means at the time of continuous paper transport. 2. A continuous paper according to claim 1, wherein a guide surface for guiding between a pressing portion to be pressed and a supporting device located on the downstream side of the pair of supporting devices is formed by a part of the pressing device. Cutting device. 3. The cutting mechanism link mechanism according to claim 1, wherein, when the continuous paper is transported, the cutting means moves the cutting means at a distance slightly longer than a distance of the pressing portion with respect to the support surface so that the contact portion is substantially parallel to the support surface. The continuous paper cutting device according to claim 1, wherein the continuous paper cutting device is held such that 4. The cutting mechanism link mechanism is connected to a drive shaft, a pair of arms provided at both ends of the drive shaft and rotating with the drive shaft, and these arms and both end portions of the cutting device, respectively. And a connecting portion between one arm and the connecting rod, and a connecting portion between the other arm and the connecting rod are provided with a phase shifted with respect to the drive shaft. The continuous paper cutting device according to claim 1, 2, or 3.