JPH10291200A - Continuous paper cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press and hold the continuous paper in flat by correcting the deformation of the perforation part, even when the perforation part is deformed, for smoothly cutting the continuous paper, by forming a pair of pressing parts by the taper shaped elastic members of which the thickness is gradually increased toward a direction separating from the perforation. SOLUTION: The continuous paper P is temporarily stopped, so that the both sides of the perforation Pa are pressed and held by a pair of support means 36, 37 and a pair of pressing parts 42, 42', with the energization force by an energizing means 43, and the paper is cut on the perforation Pa, by passing a cutting means 50 from one face side of the continuous paper P to the other face side. The pair of pressing parts 42, 42' are formed by the taper shaped elastic members of which the thickness is gradually increased toward a direction separating from the perforation Pa, so that the pressing parts 42, 42' are deformed to press the continuous paper P in such manner that the perforation Pa is expanded on the center as shown in the drawings b, c, when the continuous paper P is pressed. Accordingly the deformation Pt is corrected even when the deformation is remained, and the paper can be pressed and held in flat.

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. 24 is a diagram showing the one described in the publication.

In FIG. 24A, 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. 24 (b), a blunt device 25 having a rounded tip 25a is used. With such a blunt device, the sheet starts to be pressed from the lowermost end portion 25a ', and as shown in FIG. 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]

2. Related Art The applicant of the present invention has already proposed a continuous paper cutting apparatus related to the present invention as Japanese Patent Application No. 8-248706, which will be described.

FIG. 1 is a view showing an outline of the continuous paper cutting apparatus, in which (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 disposed on the left and right, 33 denotes an upper frame, and 34 and 34, respectively.
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
As will be described later, a pair of support means is configured to guide the continuous paper when the continuous paper is transported and to support the continuous paper on both sides of the perforation at the time of cutting. The paper feed guide 36 is located on the upstream side in the continuous paper transport direction, and the paper discharge guide 37 is 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 supply port 38 between the upper frame 33 and 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 shows the upper frame 33 and the paper feed guide 3.
6, paper ejection guide 37, pressing means 40, cutting means 50,
5 is an enlarged left sectional view showing the movable guide 80, and FIG.

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 slit-shaped cutting space formed between the paper feed guide 36 and the paper discharge guide 37.

The holding means 40 includes 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.

On the movable frame 41, between the pressing means 42 'located downstream of the cutting means 50 in the continuous paper conveying direction and the cutting means 50, the continuous paper is
Guide surface 41c for guiding between 2 'and paper ejection guide 37
Are formed.

The holding plates 42, 42 'are made of an elastic material such as rubber, and have a trapezoidal cross section.

As described later, the pressing plates 42, 42 'press the continuous paper P on their lower surfaces 42a, 42'a, and 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 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 continuous paper cutting device, as shown in FIG.
There are a total of twelve, six each in 1b.

The pressing means 40 is provided by an 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, 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 perforations (the direction orthogonal to the paper surface of FIG. 4) and is formed longer than the perforations (that is, longer than the width of the continuous paper P) (FIG. 1A and FIG. 16).
(C)).

FIG. 7 (a) is a perspective view showing the vicinity of the left end of the cutting means 50, and FIG. 7 (b) is a perspective view showing the same at a different angle.

In FIG. 3, reference numeral 34a denotes an upper piece of the sub-frame 34 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. 7, 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. 7, 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 9).

FIGS. 8A and 8B are views showing the link mechanism 60 for the cutting means and the link mechanism 70 for the pressing means, wherein FIG. 8A is a front view of the left side, and FIG. 8B is a left side view. FIG. 9A is a front view of the same right part, and FIG. 9B 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 a 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. 8, 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. 8, 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. 9, the shape of the right arm 62R 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. A first pin 62R1 is provided on the projection 62Ra.
This pin 62R1 and the right end pin 53 of the cutting means 50 are connected by a connecting rod 63R. As a result, FIG.
(B) and FIG. 9 (b), the drive shaft 6
The distance RL from the center of the first arm 62 to the center of the first pin 62L1 of the left arm is different from the distance RR from the center of the first pin 62R1 of the right arm. RL <RR. The position about the drive shaft 61 is also the first arm of the right arm.
The pin 62R1 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 FIG. 8 and FIG. 9, 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, and these arms 62L and 62R. Connecting rods 71L and 71R are rotatably connected to 62R and the end of the holding means 40.

As shown in FIG. 8, 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 structure on the left and right sides (appears symmetrically in FIGS. 8 and 9). That is, as shown in FIG.
The 2R is provided with a second pin 62R2 located at the same position as the left second pin 62L2 around the drive shaft 61. The second pin 62R2 and the right end of the movable frame 41 of the holding means 40 are provided. The pin 45R provided on the hanging connecting plate 44R fixed to the connecting rod 71 is connected to the connecting rod 71.
They are connected by R. A long hole 72 is provided in the connecting rod 71R, and a second pin 62R2 is formed in the long hole 72.
Are 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. 8 and 9 (standby state described later), the urging force of the urging means 43 is applied to the connecting plates 44L, 44R, the pins 45L, 45
R, connecting rods 71L, 71R, second pins 62L2, 62
The movement is restricted by being received by the drive shaft 61 via R2 and the arms 62L and 62R. The drive shaft 61 is arranged in parallel with the slit-shaped cutting space C as shown in FIGS. 1 to 3, and is rotatably supported by the sub-frames 34 and 35.

FIG. 10 is a partially enlarged perspective view showing details of the cutting space C (see FIG. 4).

10 and 4, reference numeral 80 denotes a movable guide, which is a continuous paper P conveyed as described later.
4 is to prevent the leading end of the slit-shaped cutting space C, that is, between the paper feed guide 36 and the paper discharge guide 37, from causing a paper jam. When the drive shaft 61 rotates and the cutting means 50 cuts the continuous paper P, the movable guide 80
With the rotation of the drive shaft 61, the drive shaft 61 is retracted from the cutting space C.

The movable guide 80 is constituted by mounting a plurality of guide blocks 81 (five in this continuous paper cutting apparatus) on the drive shaft 61 as shown in FIG. 11 and FIGS. .

FIGS. 12A and 12B show the guide block unit 81, wherein FIG. 12A is a front view, FIG. 12B is a left side view, and FIG. 12C is a right side view. FIG. 13 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.
The upper surface 85a of the rib 85 formed on the guide portion 84 forms a continuous paper guide surface. 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 82a into which the drive shaft 61 is inserted.

The movable guide 80 is shown in FIG. 11 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. It is mounted on the drive shaft 61 as shown.

As shown in FIG. 10, the edges of the paper feed guide 36 and the paper discharge guide 37 facing the cutting space C are
Notches 36a and 37a are formed in a comb shape, and the movable guide 80 is mounted on the drive shaft 61, and the drive shaft 6
1 is assembled to the device, the front end portion 85b and the rear end portion 85c of the rib 85 are cut out 36a and 37c.
a.

FIG. 14 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 continuous paper cutting apparatus as described above further comprises
The apparatus is provided with paper feeding means (for example, a paper feeding roller or a pin tractor), paper discharging means (for example, a paper discharging roller or a pin tractor), and control means for controlling the entire apparatus.

Next, the operation of the continuous paper cutting apparatus as described above will be sequentially described mainly with reference to FIGS. 15 to 19 by dividing the continuous paper cutting apparatus into a standby state, a sheet feeding operation, and a cutting operation.

FIGS. 15A, 15B and 15C are left side views for explaining the operation, respectively. FIGS. 16 to 19 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. 16, that is, as shown in FIGS. It is in a state of being left.

At this time, as shown in FIG. 4 and FIG. 16 (c), the cutting means 50 is connected to the supporting surfaces 36b, 3 of the continuous paper P of the supporting means (the paper feeding guide 36 and the paper discharging guide 37).
Pressing unit for 7b (refer h ₃₎ distance of about substantially equal to the distance (see h _2, h ₅₎ of (pressing plate) 42, 42 ', the contact portion 50a supporting surfaces 36b, 37b substantially parallel state ( (Substantially horizontal state).

As described above, the urging force of the urging means 43 is applied to the pressing means 40 as described above.
0, and its movement is regulated, and FIG.
It is at the position shown in FIG.

<Paper Feeding Operation> In the above state,
The paper supply unit (not shown) is driven, and the continuous paper P is supplied from the paper supply port 38 onto the cutting space C as shown in FIG.

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

<Cutting Operation> In the cutting operation, the drive shaft 61 is driven by the motor 65 to move from the standby state shown in FIG. 16 to the state shown in FIG.
It is performed by rotating at a stretch.

Hereinafter, the main states will be sequentially described.

FIG. 17 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.

During the rotation of the drive shaft 61, the pressing plates 42 and 42 'of the pressing means 40 abut on 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.
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,
As shown in FIG. 9B, the position of the first pin 62R1 of the right arm with respect to the periphery of the drive shaft 61 is the first pin 62R1 of the left arm.
This is because the pin 62L1 is shifted by the angle α.

FIG. 17 shows a state in which the right end 50R of the cutting means 50 has been completely raised, 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 in the position shown in FIGS. 15B and 17C.
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 is clear from FIG. 17C, the state is inclined by θ with respect to the paper surface of the continuous paper P.

As shown in FIG. 17D 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 guide 80 also rotates, and as shown in FIG. 15B, the cutting means is retracted from the cutting space C in a direction orthogonal to the longitudinal direction of the cutting space C. A passage 50 described later is secured.

When the drive shaft 61 further continues to rotate from the state shown in FIG. 17, as shown in FIG. 18, the left end 5
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. 18 (c), the cutting means 50 continuously moves at an angle θ ′ substantially equal to the aforementioned angle θ. The perforation of the paper P is cut from the left side PL. As described above, since the cutting unit 50 cuts the continuous paper P in an inclined state, the cutting is performed smoothly. Here, θ = θ ′ is not satisfied in FIG.
9B, a distance RL from the center of the drive shaft 61 to the center of the first pin 62L1 of the left arm.
And the distance RR to the center of the first pin 62R1 of the right arm.
Is slightly different, and RL <RR. However, rather, since RL <RR in this way, the cutting means 50 makes a movement almost as if a person grasped the left end 50L and swung it down. It will be 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 with the same magnitude of urging force of the urging means 43 as in the state shown in FIG. As the drive shaft 61 rotates, 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. 18).

FIG. 20 is a schematic diagram showing a state in which the continuous paper P is cut (accurately, a state immediately before cutting), and corresponds to an enlarged view in XX-XX in FIG. 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.

[0072] However, according to the continuous paper cutting device, the contact portion (cut portion) is formed in an arc shape with respect to continuous paper cutting unit 50, since the winding length L ₁ obtained above, the length even if the position of the perforation Pa is deviated within a range of L _1, the continuous paper P is reliably be cut at the perforations 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. 26A, the continuous paper P is normally folded in a zigzag state with the 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. 21 shows this state.

In the same figure, P ′ is 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 continuous paper cutting device, the contact portion (cut portion) of the cutting means 50 with the continuous paper is formed in an arc shape, and the above-described winding length L ₁ is obtained. is perforation P1a within L _1, P2a, even though misaligned the P3a,
Each of the sheets P1, P2, and P3 of the continuous sheet (copying sheet) P 'is reliably cut at each perforation P1a, P2a, and P3a.

Conversely, in this continuous paper cutting apparatus, the perforation position is shifted from the center of the cutting space C due to a continuous paper conveyance error or the like, and / or the continuous paper is copy paper. even perforations of each sheet was shifted from the central portion of the cutting space C, so that its can be reliably cut with perforations, i.e. as described above winding length L ₁ can be obtained, the cutting means 50 The shape of the arc-shaped portion 50a, the paper feed guide 36 and the paper discharge guide 3
7 is 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. 18, as shown in FIG. 19, the left end 50L and the right end 50R of the cutting means 50 are further moved by the action of the cutting means link mechanism 60 as shown in FIG. 19C at approximately the same speed, and as shown in FIG. 19C, the cutting means 50 completely passes below the continuous paper P, and as a result, the continuous paper P is perforated Pa (FIG. 15C )) 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. 19A and 19B, 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 guide 80 rotates with the rotation of the drive shaft 61 as shown in FIG.
To secure the passage.

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. 19 to the state shown in FIG. 16, and each member 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. 15C) is discharged out of the machine, and the next perforated portion is cut into the cutting space C. And the above operation is repeated.

According to the continuous paper cutting apparatus described above, the continuous paper P is held by pressing the paper pressing means 40 with the biasing means 43 against the pair of supporting means 36 and 37, and the continuous paper P is cut. It can be cut by means 50.

The continuous paper cutting apparatus as described above can be incorporated in a printer as shown in FIG.
FIG. 22 is a schematic left side view of the printer.

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

Reference numeral 100 denotes a printer case, 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 conveying roller pair, 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 paper discharge roller pair 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 a paper feeding means of the continuous paper cutting device PC. The device PC itself can be further miniaturized.

[0094]

SUMMARY OF THE INVENTION The above-mentioned prior art and the continuous paper cutting device disclosed in Japanese Patent Application No. 8-248706 include the following.
The following issues were found.

That is, the continuous paper having perforations is usually folded in a zigzag shape at the perforations (see FIG. 22).

For this reason, even after being conveyed into the apparatus, some of the kinks may remain, and the perforations are deformed into a mountain shape (convex shape) or a valley shape (concave shape). There is.

In such a situation, if the continuous paper is simply pressed and held on both sides of the perforation, the deformation of the continuous paper still remains. Therefore, when cutting, the continuous paper may be loosened by the amount of the deformation. Become difficult to be cut.

[0098] An object of the present invention is to solve the above problems and to provide a continuous paper cutting apparatus capable of cutting continuous paper smoothly.

[0099]

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. A device for cutting continuous paper at a perforation at the time of stop, between a pair of support means for supporting continuous paper on both sides of the perforation when the continuous paper is temporarily stopped, and between the support means at the time of transport of the continuous paper Pressing means having a pair of pressing portions which are urged by urging means and press the continuous paper between the perforations on both sides with the supporting means when the continuous paper is cut. And cutting means disposed between the pair of pressing portions, and when the continuous paper is temporarily stopped, the continuous paper is moved from one surface side to the other surface side to cut the continuous paper at its perforations,
It is characterized in that the pair of pressing portions are formed of a tapered elastic member that becomes thicker as the distance from the perforation increases.

According to a second aspect of the present invention, in the continuous paper cutting apparatus according to the first aspect, the pair of pressing portions are located near the perforations when the continuous paper is transported as viewed from the perforation direction. When the continuous paper is pressed between the continuous paper and the support means, the continuous paper is moved away from the perforation.

[0101]

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

When the continuous paper is transported, a passage through which the continuous paper passes is formed between the supporting means and the pair of pressing portions of the pressing means, and the continuous paper having perforations is transported in a direction orthogonal to the perforations. .

At the time of cutting, the continuous paper is temporarily stopped, and on both sides of the perforation, a pair of supporting means and a pair of pressing portions of the pressing means are pressed and held by the urging force of the urging means. When the continuous paper passes from one side to the other side, the continuous paper is cut at the perforations.

According to the continuous paper cutting apparatus of the first aspect, since the pair of pressing portions are formed by the tapered elastic members that become thicker as the distance from the perforation increases, the pair of pressing portions are formed. When the pressing portion presses the continuous paper, the pressing portion deforms and presses the continuous paper so that the continuous paper is spread around the perforations.

Therefore, according to the continuous paper cutting apparatus of the first aspect, even if the deformation remains in the perforated portion of the continuous paper, the continuous paper is cut in a state where it is corrected and tightened. Will be pressed and held,
As a result, the continuous paper can be cut smoothly.

According to the continuous paper cutting device of the second aspect,
2. The continuous paper cutting device according to claim 1, wherein the pair of pressing portions are located near the perforations when the continuous paper is transported, as viewed from the perforation direction, and the continuous paper is held between the support means and the continuous paper. 3. When pressing, the continuous paper is moved away from the perforations, so even if the deformation remains in the perforations of the continuous paper, the continuous paper is corrected in a more reliable manner and stretched tight. As a result, the continuous paper can be cut more smoothly.

[0107]

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

This embodiment is described in Japanese Patent Application No. Hei.
No. 48706 is an improved continuous paper cutting device.
The configuration other than the improvement is the same as that of the continuous paper cutting device disclosed in Japanese Patent Application No. 8-248706, and the improvement will be described.

FIGS. 23 (a), 23 (b), and 23 (c) are left side views showing the main parts of this embodiment, and are also explanatory diagrams of the operation. In these figures, parts corresponding to the parts shown in FIGS. 1 to 22 are denoted by the same reference numerals.

The feature of this embodiment is that, as shown in FIG. 23 (a), the pair of pressing portions 42, 42 'are formed of a tapered elastic member which becomes thicker as the distance from the perforation Pa increases. It is in the point.

When the continuous paper P is transported, a passage T through which the continuous paper P passes is formed between the support means 36 and 37 and the pair of pressing portions 42 and 42 'of the pressing means 40, as shown in FIG. Then, the continuous paper P having the perforations Pa is transported in a direction orthogonal to the perforations Pa.

On the other hand, at the time of cutting, when the movable frame 41 moves toward the support means 36, 37 by the operation of the link mechanism 70 for the holding means (see FIG. 8 and the like), the holding section 42,
Reference numeral 42 ′ denotes a continuous paper centering on the perforation Pa as shown by arrows X and X ′ in the figure from the time when it comes into contact with the supporting means 36 and 37 via the continuous paper P as shown in FIG. The continuous paper P is pressed while being deformed so as to spread the P, and finally, the continuous paper P is deformed so as to be spread and pressed as shown in FIG. Becomes

Therefore, according to the continuous paper cutting apparatus of the above embodiment, the following operation and effect can be obtained.

At the time of transport of the continuous paper P, as shown in FIG. 23A, a passage T through which the continuous paper P passes between the support means 36, 37 and the pair of pressing portions 42, 42 'of the pressing means 40.
Is formed, and the continuous paper P having the perforations Pa is transported in a direction orthogonal to the perforations Pa.

At the time of cutting, as shown in FIGS. 23 (b) and (c), the continuous paper P is temporarily stopped, and on both sides of the perforation Pa, a pair of supporting means 36 and 37 and a pair of pressing means of pressing means are provided. The continuous paper P is pressed and held by the urging force of the urging means 43 and the cutting means 50 (see FIG. 4 and the like) passes from one side of the continuous paper P to the other side. It is cut at the perforation Pa.

According to the continuous paper cutting apparatus of this embodiment, the pair of holding portions 42, 42 '
a, a pair of holding portions 42, 4
When the 2 'presses the continuous paper P, the pressing portions 42, 42' are continuously deformed and deformed so that the continuous paper P is spread around the perforation Pa as shown in FIGS. Paper P
Will be pressed.

Therefore, if the perforation P of the continuous paper P
Even if the deformation Pt as shown in FIG. 7A remains in the portion a, the continuous paper P is pressed and held in a state where it is corrected and tightened as shown in FIG. As a result, the continuous paper P can be cut smoothly. It is evident from experience that it is easier to cut when it is taut.

As can be seen from this, when the pair of holding portions 42, 42 'are viewed from the perforation direction (the direction orthogonal to the plane of FIG. When the continuous paper P is positioned and pressed between the supporting means 36 and 37, the continuous paper P is further moved away from the perforation Pa as indicated by phantom arrows X1 and X1 'in FIG. Make sure continuous paper P
Is corrected and the continuous paper P is tightened, and as a result, the continuous paper P can be cut more smoothly.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be appropriately modified and implemented within the scope of the present invention.

For example, in the above embodiment, FIG.
As shown in (a), the lower surfaces 42a, 42a 'of the pair of pressing portions 42, 42' are linear, but may be curved. The side surfaces 42d, 42d 'of the pair of holding portions 42, 42' are inclined so as to assist the above-mentioned deformation of the holding portions 42, 42 ', but they need not be inclined.

[0121]

According to the continuous paper cutting apparatus of any of the first and second aspects, continuous paper can be cut smoothly.

Further, according to the continuous paper cutting device of the second aspect, continuous paper can be cut more smoothly.

[0123]

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of an embodiment of a continuous paper cutting apparatus related 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 perspective view showing the vicinity of the left end of the cutting means 50, and FIG. 7B is a perspective view showing the same at a different angle.

8A and 8B are views showing a link mechanism for cutting means 60 and a link mechanism for holding means 70, wherein FIG. 8A is a front view of a left portion, and FIG.

9A and 9B are diagrams 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 right side portion, and FIG. 9B is a right side view.

FIG. 10 is a partially enlarged perspective view showing details of a cutting space C.

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

FIG. 12 is a view 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. 13 is a perspective view showing a guide block unit 81;

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

FIGS. 15 (a), (b) and (c) are left side views for explaining the operation.

16A and 16B are diagrams mainly showing the operation of the cutting means 50, the link mechanism for cutting means 60, and the link mechanism for holding means 70, wherein FIG. 16A is a left side view, FIG. 16B is a right side view, and FIG.
Is a front view of the cutting means 50.

FIG. 17 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. 18 is a view showing the same 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. 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 schematic view showing a state in which the continuous paper P is cut, and is a view corresponding to a view taken along the line XX-XX in FIG. 18 (c).

FIG. 21 is a schematic view showing a state where the copy paper P ′ is cut, and is a view corresponding to a view taken along the line XX-XX in FIG. 18 (c).

FIG. 22 is a schematic left side view of a printer incorporating the continuous paper cutting device.

23 (a), (b) and (c) are left side views each showing a main part of one embodiment of the continuous paper cutting apparatus according to the present invention.

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

[Explanation of symbols]

 P Continuous paper Pa Perforation Pt Deformed portion 36 Paper feed guide (supporting means) 37 Paper discharge guide (supporting means) 40 Pressing means 42, 42 'Pressing section 50 Cutting means

Claims (2)

[Claims] An apparatus for transporting continuous paper having a perforation in a direction orthogonal to the perforation and temporarily stopping the continuous paper, and cutting the continuous paper at the perforation when the continuous paper is stopped. A pair of support means for supporting the continuous paper on both sides of the perforation; forming a passage for the continuous paper between the support means when the continuous paper is transported; and urging the urging means when the continuous paper is cut. Pressing means having a pair of pressing parts for pressing the continuous paper between the supporting means on both sides of the perforation; and being disposed between the pair of pressing parts, when the continuous paper is temporarily stopped, continuous Cutting means for cutting the continuous paper at the perforations by moving from one surface side of the paper to the other surface side, wherein the pair of pressing portions become thicker as the distance from the perforations increases. Department In the continuous paper cutting apparatus characterized by being configured. 2. The pair of pressing portions are located near the perforations when the continuous paper is conveyed, as viewed from the perforation direction, and when the continuous paper is pressed between the support means and the continuous papers, 2. The continuous paper cutting device according to claim 1, wherein the continuous paper cutting device moves away from the eyes.