JP2001088227A - Paper folder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper folder simply adjusting the tip position of an edge guide and reduced in its space for attaching a paper drawing-in preventing mechanism to a buckle. SOLUTION: A paper folder 1 has a plurality of folding rollers 4a, 7a, 7b, and plural stages of buckles in which the leading end of paper is drawn to impart a predetermined folding shape to the paper by a combination of the folding rollers and the buckles. When a folding shape called to be a double- leafed fold is applied to paper, an edge guide 9 is provided in order to prevent the drawing of the leading end of the paper (leaf) to which the folding shape is applied in the buckle 8 of a final stage. The tip of the edge guide 9 receives the power transmitted by a motor 20, a belt 21 and a crank shaft 22 to move linearly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for easily adjusting the position of the tip of a wing guide, preventing damage to the wing guide, and preventing a folded sheet from entering a buckle. The present invention relates to a paper folding machine with reduced paper feed.

[0002]

2. Description of the Related Art There is a case in which a sheet on which characters, figures, and the like are written is folded into a predetermined size, bound to a file, or put in an envelope. FIGS. 6 and 7 are schematic perspective views showing examples of such sheet folding. In the example of FIG. 6, the paper P is folded inward at the position of X in the center to form Pa and Pb.

FIG. 7 shows an example in which the sheet P is folded inward once at the position X, and the surface of Pa is folded outward at the position Y to form a three-fold (single-sleeve fold). As described above, a sheet folding machine is used when various folding shapes such as folding in two at a predetermined position are continuously applied to a large number of sheets. In this paper folding machine, a folding shape is given to a paper using a folding roller and a plurality of buckles.

Next, the operation of the paper folding machine will be described with reference to FIGS.
This will be described with reference to a side view of FIG. In this example, the paper P is folded in one sleeve. In the figure, the folding roller is composed of a fixed roller Tb and movable rollers Ta, Tc and Td. Each movable roller Ta, Tc, Td is a folding roller.
In accordance with the thickness of the sheets passing between the rollers, the rollers are moved up and down or left and right in the directions indicated by the arrows in the rollers to adjust the interval between the folding rollers. Va and Vb are feed rollers.

[0005] T2 and T3 are buckles into which the leading edge of the paper P is drawn, and are provided with stoppers Qa and Qb, respectively.
Moves in the length direction.

[0006] The positions of the first and second buckle stoppers Qa and Qb are set, and the distance between the folding rollers is adjusted.
The sheet P is fed and passed between the folding rollers Ta and Tb.
The sheet P is pulled into the first buckle T2, and the leading end is stopped at the position of the first buckle stopper Qa. Even if the leading end is pressed by the first buckle stopper Qa, the sheet P is folded by the folding roller T.
a and Tb, so that the folding rollers Tb,
Deflection gradually occurs between Tc.

The bent sheet P is then drawn into the second buckle T3 while being folded between the folding rollers Tb and Tc as shown in FIG.
It stops at the position of the buckle stopper Qb. Even if the leading end is pressed by the second buckle stopper Qb, the paper P is folded
Since the paper is further fed by the rollers Ta and Tb and the folding rollers Tb and Tc, bending is gradually generated between the folding rollers Tc and Td.

The warped paper P is then carried out from the feed rollers Va and Vb to the next step while being folded between the folding rollers Tc and Td as shown in FIG. You. In this way, the paper P is given a single-sleeve fold.

By the way, when a document such as a communication message or a report is put in an envelope or the like, a folded shape called a double fold as shown in a perspective view of FIG. In the folded shape, as shown in FIG. 11A, the paper P is folded inward at a position Za which is a quarter from one end when viewed in the longitudinal direction of the paper P.

Next, as shown in FIG.
Is folded inward at a position Zb which is a quarter from the other end of the sheet P. Subsequently, as shown in FIG. 11C, the sheet P is folded inward at the position of the center line Zc of the sheet P.

FIG. 12 is a schematic side view showing an example of a sheet folding machine used to give a folding form of double-folding as shown in FIG. 11 to a sheet. In FIG. 12, a sheet folding machine 1 includes a pair of folding rollers 1a and 1b, 4a and 4b, 7a.
And 7b are arranged. In addition, four-stage buckle 2,
3, 5, and 8 are provided. Buckle 3 is not used in this example. The other buckles are provided with buckle stoppers 2a, 5a and 8a, respectively.

Next, the operation of the sheet folding machine shown in FIG. 12 will be described. The leading end of the fed paper is drawn into the buckle 2, and the bent portion generated in the paper is fed toward the buckle 5 while being drawn between the folding rollers 1b and 4a.
A folded shape is provided at the position of Za. The leading end of the paper is located at the Za position where the folded shape is given, and this leading end is
The bent portion generated after being drawn into the folding roller 4b,
7a, a folding shape is given to the position of Zb in FIG.

Subsequently, the leading end of the sheet is provided with a folded Z
b, and this tip is pulled into the buckle 8,
The bent portion generated thereafter is drawn between the folding rollers 7a and 7b, and a folding shape is given to the position Zc in FIG. In this way, when the folded shape of the paper is drawn between the folding rollers 7a and 7b in the final stage when the folded shape of the double-fold is given to the paper, as shown in the perspective view of FIG. The leading end portion Pa of the sheet (peller) folded inward at the position may enter the buckle 8, and there is a problem that the folded shape cannot be accurately given to the sheet.

To cope with such a problem, a wing guide 9 as shown in the side view of FIG. 14 is provided. The blade guide 9 is urged by an electromagnetic solenoid 10. When the electromagnetic solenoid 10 is operated, the rod 10a moves to move the connecting portion 9a of the wing guide 9, thereby causing the wing guide 9 to protrude from the entrance of the buckle 8.

A sensor 6 is attached to the buckle 5 in front of the buckle 8.
When the leading edge of the sheet is pulled into the buckle 5 and the leading edge of the sheet is detected by the sensor 6, the electromagnetic solenoid 10 operates at a predetermined timing to protrude the wing guide 9 to close the entrance of the buckle 8. , So that the tip end Pa of the propeller does not enter the buckle 8.

[0016]

It is necessary to adjust the position of the tip of the wing guide according to the type of paper to be fed and the folded shape. However, in the conventional paper folding machine, since the blade guide is moved by the electromagnetic solenoid, the stopper is provided to adjust the stroke of the electromagnetic solenoid, or to adjust the mounting position of the blade guide. In addition, the position of the tip of the wing guide has been adjusted.
For this reason, there has been a problem that the operation of adjusting the tip position of the blade guide becomes complicated.

Further, when the electromagnetic solenoid is operated, a mechanical shock applied to the wing guide is large, and the wing guide is easily damaged. In addition, heat generated during operation of the electromagnetic solenoid adversely affects peripheral devices. There has been a problem that the number of operations of the electromagnetic solenoid is limited in order to avoid a rise in temperature. Further, the width Wa between the surface of the buckle and the surface of the electromagnetic solenoid is increased, and there is a problem that the space for mounting a mechanism for preventing the insertion of a prop (folded sheet) into the buckle increases.

The present invention has been made in view of such a problem, and has a mechanism for easily adjusting the tip position of the wing guide, preventing damage to the wing guide, and preventing a folded sheet from entering the buckle. An object of the present invention is to provide a paper folding machine that reduces space.

[0019]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper folding machine, comprising: a plurality of folding rollers; and a plurality of buckles into which the leading edge of the paper is drawn. A paper folding machine for imparting a predetermined folding shape to a paper by a combination of the folding roller and a buckle, wherein a wing guide is provided at a specific buckle entrance, and the wing guide is driven by a motor. This can be achieved by using a configuration in which movement is performed by force.

According to a second aspect of the present invention, in the paper folding machine according to the first aspect, the paper is given a double-folded folding shape, and the wing guide is attached to the last buckle of the double-folded buckle. It is characterized by having been provided.

According to the first aspect of the present invention, a blade guide is provided for preventing the leading end of the folded paper from being fed, and the blade guide is moved by the driving force of the motor. For this reason, when moving the wing guide, the mechanical impact given to the wing guide is small, and damage to the wing guide can be prevented. The tip position of the blade guide can be easily and precisely adjusted by controlling the rotation angle of the motor. In addition, by appropriately selecting the reduction ratio of the motor,
The wing guide can be operated at high speed.

Further, the wing guide can be operated without restriction due to heat generated by the driving source unlike the electromagnetic solenoid. Further, it is possible to reduce the mounting space of the mechanism for preventing the paper with the folded shape from being inserted into the buckle.

According to a second aspect of the present invention, the wing guide is provided on the buckle at the last stage of the double fold buckle to give the paper a double fold shape. For this reason, in particular, in the case of a double-folding in which the folded shape is easily disturbed due to the leading end of the folded paper being drawn into the buckle in the final stage, the folded shape can be accurately given.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a paper folding machine according to an embodiment of the present invention will be described. 3 to 5 are side views of the sheet folding machine of the present invention. The same parts or corresponding parts as those in the paper folding machine of FIG. 12 are denoted by the same reference numerals. The clockwise rotation of each folding roller is indicated by an arrow R, and the counterclockwise rotation is indicated by an arrow L.

As shown in FIGS. 3 to 5, the folding rollers whose thickness is adjusted by the thickness of the number of sheets to be fed rotate in the opposite directions, and are held between the folding rollers. The paper is fed forward while giving the folded paper a folding shape.

In the paper folding machine of the present invention, the motor 20 and the motor 20 are provided to prevent the leading end of the paper folded at the Za position from being fed to the buckle 8.
The belt 21 stretched between the pulley connected to the output shaft of the buckle 8 and the pulley mounted above the buckle 8 converts the rotational motion of the belt 21 into linear motion and converts the rotational motion to linear motion.
Is provided.

Buckle stopper 2a provided on buckle 2
Is fixed at a position corresponding to a quarter length in the longitudinal direction of the paper P. Further, a buckle stopper 5a provided on the buckle 5 is fixed at a position corresponding to a half length in the longitudinal direction of the paper P, and a buckle stopper 8a provided on the buckle 8 is provided on the opposite side of the paper P. It is fixed at a position corresponding to a quarter length in the longitudinal direction.

Next, the operation of the paper folding machine shown in FIGS. 3 to 5 will be described with reference to an example in which a paper is given a double-folded form. In FIG. 3, when the leading end of the fed sheet P is pulled into the buckle 2 and the quarter length in the longitudinal direction is pulled, it comes into contact with the buckle stopper 2a and stops. The tip of the wing guide 9 is a pair of folding rollers 4a, 7a.
To prevent paper from being fed.

Here, the sheet P is made up of a pair of folding rollers 1a,
1b are rotated in opposite directions, so that the paper is further fed to form a bent portion, and the bent portions are folded rollers 1b, 4b.
The paper is fed toward the buckle 5 while being drawn between the a.
For this reason, the paper P is given a folded shape at the position Za in FIG.

Here, as shown in FIG. 4, the leading end of the paper P is located at the position of Za with the folded shape, and this leading end Za is pulled into the buckle 5, and the length in the longitudinal direction is pulled in half. And comes into contact with the buckle stopper 5a and stops.
When the sensor 6 detects the leading end of the sheet P, the leading end of the wing guide 9 separates from the surfaces of the pair of folding rollers 4a and 7a, and is changed to a state in which the sheet can be fed.

The sheet P is further fed by the pair of folding rollers 4a and 4b rotating in opposite directions to form a bent portion, and the bent portion is drawn between the folding rollers 4b and 7a. A folded shape is given to the position of Zb in FIG.

Next, when a predetermined time elapses after the sensor 6 detects the leading end of the sheet P, as shown in FIG.
Approaches the surfaces of the pair of folding rollers 4a and 7a,
The leading end of the sheet folded at the position Za is prevented from entering the buckle 8.

The leading end of the sheet P is located at the position of Zb to which the folded shape is given, and this leading end is pulled into the buckle 8 and the sheet P
When a quarter length in the longitudinal direction on the opposite side is retracted, it comes into contact with the buckle stopper 8a and stops. When the pair of folding rollers 4b and 7a rotate in opposite directions, the sheet P is further fed and forms a bent portion, and the bent portion is drawn between the folding rollers 7a and 7b. Zc
A folding shape is given to the position.

FIG. 1 is a side view partially showing a paper folding machine of the present invention, and FIG. 2 is an enlarged side view showing a main part of FIG. As described above, when the motor 20 is driven, the belt 21 is driven.
Rotates, and the crankshaft 22 moves in a linear direction to move the wing guide 9 in the arrow S direction. For this reason, as shown in FIG. 2, the tip of the wing guide 9 has a pair of folding rollers 4a,
Approach the surface of 7a.

Therefore, after the sensor 6 detects the leading end of the sheet drawn into the buckle 5 as described above, the timing at which the leading end of the wing guide 9 approaches the surfaces of the pair of folding rollers 4a and 7a is determined. By appropriate selection, Za
In this position, it is possible to prevent the leading end of the folded paper from being drawn into the buckle 8 and disturbing the folded shape. Motor 20
Is driven in the reverse direction, the tip of the wing guide 9 returns to the original position.

In the present invention, the tip guide 9 is driven by a motor. Therefore, the mechanical impact given to the wing guide 9 is small, and damage to the wing guide 9 can be prevented. The tip position of the wing guide 9 can be easily and precisely adjusted by controlling the rotation angle of the motor.

By appropriately selecting the reduction ratio between the motor 20 and the belt 21, the operating speed of the wing guide 9 can be increased without being restricted by the heat generated by the driving source as in the electromagnetic solenoid. Further, since the width Wb from the surface of the buckle 8 to the surface on which the belt 21 is stretched can be reduced, the mounting space of a mechanism for preventing the insertion of a prop (folded sheet) into the buckle can be reduced. it can.

In the examples of FIGS. 3 to 5, the wing tip guide is provided at the last stage of a paper folding machine provided with four buckles. However, the present invention is not limited to a paper folding machine provided with a four-stage buckle. In a paper folding machine provided with a multi-stage buckle, a wing tip guide is provided at the last stage of a double buckle. It can also be.

[0039]

As described above, according to the first aspect of the present invention, a blade guide is provided for preventing the leading edge of folded paper from entering the paper, and the blade guide is driven by a motor. It is configured to move by force. For this reason, when moving the wing guide, the mechanical impact given to the wing guide is small, and damage to the wing guide can be prevented. The tip position of the blade guide can be easily and precisely adjusted by controlling the rotation angle of the motor. By appropriately selecting the speed reduction ratio of the motor, the tip guide can be operated at high speed.

Further, the blade guide can be operated without restriction due to heat generated by the driving source unlike the electromagnetic solenoid. Further, it is possible to reduce the mounting space of the mechanism for preventing the paper with the folded shape from being inserted into the buckle.

According to a second aspect of the present invention, a wing guide is provided on a buckle at the last stage to impart a folding shape to the paper in a double-folded manner. In the case of a Kannon fold that is easily drawn into the fold, the fold can be accurately given.

[Brief description of the drawings]

FIG. 1 is a partial side view of a paper folding machine according to an embodiment of the present invention.

FIG. 2 is an enlarged side view showing a main part of FIG. 1;

FIG. 3 is a side view of the paper folding machine.

FIG. 4 is a side view of the paper folding machine.

FIG. 5 is a side view of the paper folding machine.

FIG. 6 is a perspective view showing a folded shape of two.

FIG. 7 is a perspective view showing a folded shape of one sleeve folding.

FIG. 8 is a side view showing an example of the arrangement of a folding roller and a buckle of the paper folding machine.

FIG. 9 is a side view showing an example of the arrangement of a folding roller and a buckle of the paper folding machine.

FIG. 10 is a side view showing an arrangement example of a folding roller and a buckle of the sheet folding machine.

FIG. 11 is a perspective view showing a folding form of a double folding.

FIG. 12 is a side view showing an example of the arrangement of a folding roller and a buckle in a conventional paper folding machine that performs double folding.

FIG. 13 is a perspective view showing a partially enlarged paper having a double-folded folding shape.

FIG. 14 is a side view showing a main part of FIG. 12 in a partially enlarged manner.

[Explanation of symbols]

 1, 1x Paper folding machine 1a, 1b Folding roller 2, 3, 5, 8 Buckle 4a, 4b Folding roller 6 Sensor 7a, 7b Folding roller 9 Blade guide 20 Drive motor 21 Belt 22 Connection Department

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaru Nakajima 1601 Asahi Jonoshita, Shin-Asahi-cho, Takashima-gun, Shiga Prefecture Horizon International Co., Ltd. In-house F-term (reference) 3E078 AA01 BB51 DD12

Claims (2)

[Claims] 1. A paper folding machine comprising a plurality of folding rollers and a plurality of buckles into which the leading end of a sheet is drawn, wherein a combination of the folding roller and the buckle imparts a predetermined folding shape to the sheet. A paper folding machine, wherein a blade guide is provided at a specific buckle entrance, and the blade guide is moved by a driving force of a motor. 2. The paper folding machine according to claim 1, wherein the paper is given a double-fold shape, and a wing guide is provided on a buckle at the last stage of the double-fold buckle.