JP3296258B2 - 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, the apparatus described in Japanese Patent Application Laid-Open No. 50-96136 is known.

FIG. 6 is a diagram showing one described in the publication.

In FIG. 6A, reference numerals 21 and 22 denote paper receiving trays arranged in a paper discharging path of a line printer, and 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 shot down to the center of the sheet over the entire sheet width.

As shown in FIG. 6 (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 25a ', and as shown in FIG. 6D, the paper is cut from one end of the paper perforation 2a hitting the lowermost end 25a'. Will begin to do so. Accordingly, when the sheet is manually cut off from the perforation, the cutting of the sheet proceeds from one end to the other end of the perforation, so that a smooth sheet cutting is realized.

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

[0010]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No.
No. 96136 does not disclose whether the continuous paper 2 discharged from the line printer is supplied from the left side or the right side in FIG. Also, it does not describe how the cut sheet is discharged.

[0011] Continuous paper 2 discharged from the line printer
Is supplied from left to right in FIG. 6, the cut sheet 2 ′ (see FIG. 6D)
Can be considered to be discharged by a pair of paper discharge rollers arranged on the downstream side (right side in the drawing) in the transport direction.

However, with such a paper discharge structure, if the interval between the perforations 2a in the continuous paper 2 (the interval in the transport direction) is short, it may be impossible to discharge the paper. At the time of cutting, it is necessary to press both side portions of the perforation 2a of the continuous paper 2 against the receiving tables 21 and 22 with the pressing members 23 and 24.
This is because there is naturally a limit in arranging the discharge roller pair near the blunt device 25.

In order to solve such a problem, that is, to be able to discharge the cut paper 2 ′ even when the interval between the perforations 2 a in the continuous paper 2 is short, the paper must be transported in the transport direction after cutting. Continuous paper 2 located on the upstream side
When the sheet is conveyed to the downstream side, the leading end (the cut perforation 2a) is applied to the rear end (the cut perforation 2a) of the cut sheet 2 'to push out the cut sheet 2'. You can take the measure.

However, even if such a measure is taken, another problem will occur as follows.

That is, as shown in FIG. 6D, when the continuous paper 2 is cut, the continuous paper 2 may have a large crease 2c. In addition, such a habit is shown in FIG.
In particular, when the perforation deviates greatly from the center as shown by 2a ', it tends to remain particularly large.

When the cut continuous paper is to be conveyed in the downstream direction (to the right in FIG. 6D) with the crease 2c remaining largely, the leading end (2a) of the continuous paper 2 is moved downstream. The sheet may collide with the side surface 22a of the sheet tray 22 on the side, thereby causing a sheet jam. As a result, the cut sheet 2 ′ may not be able to be pushed out.

An object of the present invention is to solve such a problem and to provide a continuous paper cutting device capable of reliably extruding cut paper.

[0018]

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. At the time of stop, press and hold the continuous paper on both sides of the perforation, move the blunt-shaped cutting member from one side of the continuous paper to the other side, and cut the continuous paper to tear at the perforation, and then cut. An apparatus for transporting continuous paper again, comprising a pair of support members for supporting and guiding the continuous paper on the upstream and downstream sides of the cutting member in the transport direction of the continuous paper, and after cutting the continuous paper. Before the continuous paper located on the upstream side is transported in the downstream direction, the paper is temporarily transported in the upstream direction, and then transported in the downstream direction. paper feeding hand to push the paper Characterized in that it comprises a.

[0019]

According to the continuous paper cutting device of the first aspect,
The continuous paper having the perforations is conveyed in a direction orthogonal to the perforations and temporarily stopped, and when stopped, pressed and held on both sides of the perforations, and the blunt cutting member moves from one surface side to the other surface side. As a result, the sheet is cut so as to be torn at the perforation, and then transported again.

The continuous paper cutting device according to the first aspect of the present invention includes a pair of support members for supporting and guiding the continuous paper on the upstream side and the downstream side of the cutting member in the continuous paper transport direction. After cutting the continuous paper, the continuous paper positioned on the upstream side is once conveyed in the upstream direction before being conveyed in the downstream direction, then conveyed in the downstream direction, and conveyed to the downstream side, thereby supporting the downstream side. Since the sheet feeding means is provided for pushing out the cut sheet on the member, the cut sheet can be reliably pushed out.

That is, according to the continuous paper cutting apparatus of the first aspect, after the continuous paper is cut, the continuous paper located on the upstream side is once transported in the upstream direction before being transported in the downstream direction. Therefore, even if the continuous paper is bent at the time of cutting, the bent is corrected by abutting the upstream support member when the continuous paper is once transported in the upstream direction. The Rukoto.

For this reason, when the continuous paper is conveyed again in the downstream direction, the above-mentioned kinks become small even if they remain.

Therefore, according to this continuous paper cutting device, paper jam is less likely to occur, and as a result, the cut paper can be reliably pushed out by the continuous paper on the upstream side.

[0024]

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

FIGS. 1 to 5 are partially omitted side views showing a main part of an embodiment of a continuous paper cutting apparatus according to the present invention.
It is also an operation explanatory diagram.

In FIG. 1, reference numeral 33 denotes an upper frame, 37 denotes a frame serving as a paper feed guide, and 36 denotes a frame serving as a paper discharge guide. These frames 33, 36, and 37 are connected and integrated by a side frame (not shown), and constitute a frame of the apparatus as a whole.

The paper feed guide 37 and the paper discharge guide 36
As described later, the pair of support members guide the continuous paper P when the continuous paper P is transported, and support the continuous paper P on both sides of the perforation Pa when cutting. The paper feed guide 37
It is located on the upstream side in the continuous paper transport direction (the direction of arrow a in FIG. 1), and the paper discharge guide 36 is located on the downstream side.

The upper frame 33 has a lower end 33 on the upstream side.
a is bent to form a slit-shaped paper feed port 38 between the paper feed guide 37 and the paper feed guide 37. The downstream lower end 33 b is also bent so as to form a slit-shaped discharge port 39 with the discharge guide 36.

The continuous paper P is conveyed from a paper supply port 38 to a paper discharge port 39 by paper supply means (not shown).

C is a slit-like cutting space formed between the paper feed guide 37 and the paper discharge guide 36, and 50 is a cutting member. The continuous paper P is usually conveyed such that the perforation Pa is located at the center of the cutting space C.

Reference numeral 40 denotes a pressing means, which includes a pair of pressing portions 42, 42 that come into contact with the continuous paper P, and a pair of pressing portions 42, 42.
The movable frame 41 includes a movable frame 41 to which the movable frame 41 is attached, and elastic members 46, 46 having excellent elasticity interposed between the movable frame 41 and the pressing portions 42, 42. That is, an elastic member 46 having excellent elasticity is interposed between the pressing portions 42 and 42 and the movable frame 41.

Reference numeral 47 denotes a mounting plate. The holding portions 42 are fixed to the mounting plate 47, and the mounting plate 47 is
The elastic member 46 is fixed to the lower surface of the movable frame 41. The movable frames 41, 41 may have an integral structure or a separate structure. As the elastic member 46, as a material having excellent elasticity, for example, urethane foam, ordinary rubber (eg, EP)
DM) can be used. As the holding portions 42, 42, a material having a large friction coefficient and excellent wear resistance is used. The mounting plate 47 can be made of a synthetic resin or the like.

Numerals 43, 43 are urging means for constantly urging the pressing means 40 toward the paper feeding guide 37 and the paper discharging guide 36, and the movable frame 41 of the pressing means 40.
And an upper frame 33. The plurality of compression springs 43 are provided in the recess 41a of the movable frame 41 in a direction orthogonal to the plane of FIG.

The pressing means 40 is controlled by the urging means 43
Although it is constantly urged toward the paper feed guide 37 and the paper discharge guide 36, its movement is regulated by a link mechanism for holding means (not shown).

The cutting member 50 includes a pair of holding plates 42, 4
2 between the two. The cutting member 50 has a blunt container shape (a round bar shape in this embodiment), and has a contact portion with the continuous paper P when viewed from a perforation direction of the continuous paper P to be cut (a direction orthogonal to the paper surface of FIG. 1). 50a is formed in an arc shape. The cutting member 50 extends in the same direction as the perforations (the direction perpendicular to the paper surface of FIG. 1) and is formed longer than the perforations (that is, longer than the width of the continuous paper P).

A link mechanism for a cutting member (not shown) is connected to both ends of the cutting member 50. When cutting the continuous paper, the cutting member 50 has an inclined angle toward the continuous paper (one end descends faster than the other end). (To do so).

Reference numeral 130 denotes a movable guide which guides the continuous paper toward the cutting space C when the continuous paper P is conveyed, and retracts the cutting space C along the moving direction of the cutting member 50 when cutting by the cutting member 50. It is supposed to. The movable guide 130 is provided with an urging means (not shown). The urging means is always urged toward the guide position (the position shown in FIG. 1) by this urging means.
It can be pushed down in contact with this.

The continuous paper cutting apparatus as described above 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 control of the entire apparatus. Is provided.

Next, the operation of the continuous paper cutting apparatus as described above will be described with reference to FIGS.

In the standby state, as shown in FIG.
The abutting portion 50a of the cutting member 50 with the continuous paper P is located above the support surfaces 37b, 36b of the paper supply guide 37 and the paper discharge guide 36 for the continuous paper P.

The pressing means 40 receives the urging force of the urging means 43 by a link mechanism for the pressing means (not shown), and its movement is restricted, and is at the position shown in FIG.

The movable guide 130 is provided between the paper feed guide 37 and the paper discharge guide 36 for supporting the continuous paper P.
Located nearby.

In the above state, the paper feeding means (not shown) is driven, and the continuous paper P is fed as shown by the arrow a in FIG.
Is supplied from the paper feed port 38 onto the cutting space C.

At this time, the continuous paper P is usually
a is supplied so as to be located substantially at the center of the cutting space C.

However, in practice, the continuous paper may be fed beyond a predetermined amount for some reason (for example, a transport error). In this case, the perforation Pa is cut off as indicated by a virtual line Pa ′. It may be shifted from the central part of the working space C.

In this embodiment, the perforation P
Even when the position a is shifted, the continuous sheet P is reliably cut at the perforations Pa, and the cut sheet P2 can be pushed out by being conveyed without causing a sheet jam. Therefore, in the following description, perforation P
A case will be described as an example in which the position shift a occurs.

The cutting operation is performed by lowering the holding means 40 and the cutting member 50 by the operation of the link mechanism for the holding means and the link mechanism for the cutting member (not shown).

First, as shown in FIG. 2, the pressing means 40 is lowered by the urging force of the urging means 43. When the pressing plates 42 of the pressing means 40 abut on the paper feed guide 37 and the paper discharge guide 36 via the continuous paper P, and the continuous paper P is sandwiched between these guides, the urging means 43 is used. The urging force is received by the paper feed guide 37 and the paper discharge guide 36. Therefore, the continuous paper P is
On both sides of the perforation Pa, a state in which the pressure is held between the holding plates 42, 42, the paper feed guide 37, and the paper discharge guide 36.

At this time, the pressing means 40 comprises a pair of pressing portions 42, 42 which come into contact with the continuous paper P, and the pressing portions 4
Since there are provided a movable frame 41 to which the movable frames 2 and 42 are attached, and elastic members 46 and 46 having excellent elasticity interposed between the movable frame 41 and the pressing portions 42 and 42, the apparatus is manufactured to some extent. Even if there is an error, for example, even if the paper feed guide 37 is slightly inclined
When the elastic member 46 contracts in accordance with the inclination, the pressing part 42 also inclines, and the continuous paper P is reliably pressed between the supporting members 36 and 37.

Next, as shown in FIG. 2, the cutting member 50 descends. Then, the continuous paper P is partially wound around the cutting member 50 with the lowering, and the continuous paper P is cut (separated) at the perforation Pa by the further lowering of the cutting member 50. It will be.

In the cutting member 50, a contact portion (cut portion) 50a for the continuous paper is formed in an arc shape, and the perforation Pa is cut so that the continuous paper is partially wound around the cut portion. Even if the perforations Pa are shifted from the central portion of the cutting space C, the continuous paper P is surely cut at the perforations Pa.

The movable guide 130 is pushed down by the cutting member 50.

The continuous paper P cut in this manner includes:
Addictive. In particular, the perforation Pa is shown in FIG.
When it is shifted to the downstream side as shown by (2), a large habit Pc is formed on the continuous paper P1 on the upstream side as shown in FIG.

Thereafter, as shown in FIGS. 3 and 4, the cutting member 50 moves upward and returns to the original position. At this time, the continuous paper P1 on the upstream side has a fold Pc. Therefore, as shown in FIG. 3, in the process of moving the cutting member 50 upward, the leading end portion (Pa1) of the continuous paper P1 moves upward together with the cutting member 50, so that the bent portion (Pc) is bent more greatly. It will be in the state that was done.

In the process in which the cutting member 50 moves upward and returns to the original position as shown in FIGS. 3 and 4, the pressing means 40 also returns to the original position as shown in FIG. The clamping pressure on P (upstream continuous paper P1 and downstream cut paper P2) is released, but the kinks Pc still remain as shown in FIG.

For this reason, after that, the paper feed means (not shown) arranged on the upstream side (left side in the figure) is operated to feed the continuous paper P1 on the upstream side again (when the next perforation is performed). (It is transported so as to be located at substantially the center of the cutting space C.)
At the same time, the front end Pa1 of the upstream continuous paper P1 is applied to the rear end Pa2 of the cut paper P2 on the downstream side, and even if the downstream continuous paper P1 tries to push out the downstream paper P2, If the habit Pc of the continuous paper P1 is largely left, the leading end of the continuous paper P1 may hit the paper ejection guide 36 and become jammed (see the phantom line Pc in FIG. 4).
As a result, the cut sheet P2 may not be able to be pushed out.

Therefore, in this embodiment, the sheet feeding means is once reversed, and the cut continuous paper P1 is once conveyed in the direction of arrow b (upstream direction) as shown in FIG. Direction), and the paper P2 after cutting is extruded by the conveyance to the downstream side. Note that the continuous paper P1 is transported in the downstream direction such that the next perforation is located substantially in the center of the cutting space C.

In this way, when the continuous paper P1 is once transported in the upstream direction, the kinks Pc abut on the paper feed guide 37 and are corrected as shown by the solid line in FIG.

For this reason, when the continuous paper P1 is conveyed again in the downstream direction, even if the fold Pc remains, it becomes small as shown by a virtual line in FIG.

Therefore, paper jam is less likely to occur, and as a result, the cut paper P2 can be reliably pushed out by the continuous paper P1 on the upstream side.

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

[0062]

According to the continuous paper cutting device of the first aspect, paper jam is less likely to occur, and the continuous paper on the upstream side
The cut sheet can be reliably pushed out.

[0063]

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main part of an embodiment of a continuous paper cutting device according to the present invention, and is also an operation explanatory diagram.

FIG. 2 is an operation explanatory view of the same.

FIG. 3 is an operation explanatory view of the same.

FIG. 4 is an explanatory view of the operation.

FIG. 5 is an operation explanatory view of the same.

FIGS. 6A to 6D are explanatory views of a conventional technique.

[Explanation of symbols]

 P Continuous paper Pa Perforation P1 Continuous paper on the upstream side P2 Paper after cutting 36 Discharge guide (supporting member) 37 Paper feeding guide (supporting member) 40 Pressing means 50 Cutting member

──────────────────────────────────────────────────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-62-196263 (JP, A) JP-A-6-182690 (JP, A) Japanese Utility Model Laid-open No. 7-8352 (JP, U) Japanese Utility Model Application Showa 62-165900 (JP, U) Japanese Utility Model Application Showa 62-195495 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B26F 3/02 B26D 7/06 B41J 11/66 -11/70

Claims (1)

(57) [Claims] 1. A continuous paper having a perforation is conveyed in a direction perpendicular to the perforation and temporarily stopped, and at the time of the stop, the continuous paper is pressed and held on both sides of the perforation, and the blunt cutting member is connected to the continuous paper. A device for moving the continuous paper from one side to the other side to cut the continuous paper by tearing at the perforations, and then transporting the continuous paper again, the upstream of the cutting member in the continuous paper transport direction. It has a pair of support members that support and guide the continuous paper on the side and the downstream side.After cutting the continuous paper, the continuous paper located on the upstream side is once conveyed in the upstream direction before being conveyed in the downstream direction. Paper feed means for transporting the paper in the downstream direction and pushing out the cut paper on the downstream support member by the transport to the downstream side
Continuous paper cutting apparatus characterized in that it comprises.