JP3169668B2 - Paper folding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper folding machine for folding sheets (paper) of various sizes into a predetermined folding shape.

[0002]

2. Description of the Related Art Conventionally, in this type of paper folding machine, a folding plate provided with a stopper for preventing sheet movement,
A sheet feed roller for conveying the sheet toward the folded plate; and a sheet that is disposed near the sheet feed roller and that is prevented from moving by the stopper and that bends, and rotates while nipping the sheet at the bent portion. A folding roller pair for folding the sheet, a discharge belt for transporting the sheet discharged from the pair of folding rollers, and a relatively large-diameter discharge roller that is driven to rotate in contact with the discharge belt. Have.

In this paper folding machine, the discharge belt moves at a relatively low speed, and the sheet folded in a predetermined fold by the pair of folding rollers is discharged onto the discharge belt at a high speed. Since the sheet discharged onto the discharge belt comes into contact with the discharge roller and is subjected to braking, the sheets are conveyed at regular intervals on the downstream side of the discharge roller in the sheet flow direction.

In this type of paper folding machine,
It is necessary to adjust the position of the discharge rollers according to the final size of the folded sheet. In other words, if the distance between the discharge roller and the pair of folding rollers is shorter than the final dimension of the sheet, the leading end of the sheet contacts the discharge roller and is braked before the sheet is completely discharged from the pair of folding rollers. , The sheet gets wrinkled. On the other hand, if the distance between the discharge roller and the pair of folding rollers is excessively large relative to the final dimension of the sheet, the sheets cannot be aligned at regular intervals.

Therefore, when the final size of the sheet is large, it is necessary to move the paper discharge roller away from the pair of folding rollers, and when the final size is small, it is necessary to bring the paper discharge roller closer to the pair of folding rollers. In the conventional paper folding machine, it is necessary to individually adjust the position of the stopper on the folding plate and the position of the paper discharge roller on the paper discharge belt, which is disadvantageous in that it is complicated and requires skill. is there.

In order to solve such a drawback, there has been proposed an apparatus in which a stopper and a paper discharge roller are mechanically connected by a flexible tension member (Japanese Patent Laid-Open No. 61-334).
No. 68). In this device, when the stopper is moved, the paper discharge roller automatically moves to a predetermined position corresponding to the position of the stopper.

[0007]

SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open
The apparatus disclosed in JP-A-61-33468 has the following problems. That is, as shown in FIG. 5, the folding form of the sheet includes two folds, three folds inside, three folds outside, four folds, double folds, and one sleeve folds. In the above-described apparatus, in the case of single-sleeve folding, the stopper position of the last-stage folding plate does not correspond to the position of the discharge roller, and the folded sheet is discharged before the folding roller pair is sufficiently discharged. Wrinkles occur due to braking by paper rollers. That is, the above-described conventional apparatus has a drawback that the foldable shape that can be handled is limited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is not only easy to operate, but also appropriately controls the position of a paper discharge roller in accordance with various folding shapes, thereby forming a folded sheet. It is an object of the present invention to provide a paper folding machine that can always be aligned and carried out.

[0009]

According to the present invention, there is provided a paper folding machine which takes out sheets one by one from a sheet bundle placed on a paper feed table and folds the sheets into a predetermined folding shape.
Transport means for transporting the sheet, a folded plate provided with a stopper which abuts against an end of the sheet transported by the transport means to prevent the movement of the sheet, A pair of folding rollers for sandwiching the generated sheet between the end portions of the folding plate to fold the sheet, a sheet discharging belt for receiving and transporting the sheet discharged from the pair of folding rollers, and attaching to the sheet discharging belt .
Rollers and a shaft for supporting the roller, the shaft long hole provided at the distal end portion into the fitting of the elongated hole which is braked against the driven rotating sheet discharged from the pair of folding rollers by
Can move the shaft in the major axis direction of the slot.
And a lever for rotatably supporting the lever, a lever shaft for fixing the lever, a motor for rotating the lever shaft, and moving the stopper to a predetermined position based on paper folding information given in advance, and the motor Control means for operating the roller to move it to a predetermined position.

[0010] Another folding machine according to the present invention is provided on a paper feed table.
Take out sheets one by one from the placed sheet bundle, and
Transporting the sheet in a paper folding machine
Transport means for transporting, and a sheet transported by the transport means.
A stop that abuts the end of the
Movement is prevented by the folding plate provided with
The bent sheet is stopped and the end portion of the folded plate is
A pair of folding rollers that fold the sheet in between
Receives and conveys the sheet discharged from the folding roller pair
Paper discharge belt, and the paper discharge belt provided on the paper discharge belt
The sheet discharged from the folding roller pair together with the belt is
A plate member that applies braking to this sheet
A supporting member for supporting the plate member, and the supporting member
Driving means for moving along the paper belt;
Move the stopper to a predetermined position based on the folded sheet information
And moving the support member to a predetermined position.
And control means.

[0011]

In the folding machine according to the present invention, the control means is controlled in advance.
Giving paper fold information such as sheet size and fold shape,
The control means moves the stopper to a predetermined position based on the paper folding information.
Position and move the motor to move the lever shaft and
And rotate the lever to a predetermined angle. At this time, the axis is
The length of the long hole provided at the end of the lever is
Because the roller moves in the radial direction, the roller
From the paper discharge belt to a predetermined position. In other words,
In the lighting device, sheet size and folding
Just give the paper folding information such as
The position is automatically set according to the sheet size and folded shape, etc.
Operation is easy and the stopper and
(B) can always be arranged at the optimum position. This
And wrinkles can be avoided, and
The folded sheets can be aligned in a fold
You. Further, in another paper folding machine of the present invention, the control means
Give the sheet folding information such as the sheet size and folding shape in advance
Then, the control means removes the stopper, the support member and the plate member.
Move to a predetermined position based on the paper folding information and
The sheet that has been rarely discharged onto the paper discharge belt is
You can apply braking by pinching it with a belt
it can. This allows the output bell to be used without using rollers.
Brakes on the seats on the
Trouble due to poor rotation can be prevented. What
In addition, for the plate member, for example, a plate spring can be used.
You.

[0012]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side view showing a paper folding machine according to an embodiment of the present invention, FIG. 2 is a plan view showing the paper discharge belt part, and FIG. 3 is a side view showing the paper discharge belt part. .

A bundle of sheets to be folded is placed on a paper feed table 1. The auxiliary paper feed table 2 is rotatable in a predetermined range (about 回 転 rotation) around a rotation shaft 2 a provided on the rear end of the paper feed table 1. When processing a large-sized sheet, the auxiliary sheet feeding table 2 is disposed behind the sheet feeding table 1. A plate-shaped paper feed guide 3 is provided on a side portion of the paper feed table 1 so as to restrict the movement of the sheet bundle in the width direction.

At the front end of the paper feed table 1, a paper feed roller 4 and a separating plate 5 are provided. The sheet feeding roller 4 and the separating plate 5 are used to simultaneously feed a plurality of sheets.
Utilizing the fact that the frictional force between the sheets is smaller than the frictional force between the sheet feeding roller 4 and the sheet and the frictional force between the separating plate 5 and the sheet when the sheet enters the space between the sheets. Only the uppermost sheet is surely separated into one sheet and fed to the next stage.

A plurality of rollers are arranged near the outlet of the separating section formed by the sheet feeding roller 4 and the separating plate 5 with their central axes parallel to the central axis of the sheet feeding roller 4. In addition, the folding plates 9 and 10 constitute a paper folding section. That is, the drive roller 6 is driven and rotated by a drive device (not shown). The driven roller 7 is disposed on the driving roller 6, and rotates following the driving roller 6. The driven rollers 8a and 8 are disposed on the side and the lower part of the driving roller 6 , respectively, and both rotate following the driving roller 6 .

The first folded plate 9 has one end disposed above the driven roller 8a and the other end disposed obliquely upward. The first folded plate 9 is provided with a stopper 9a movable in the length direction.
The second folded plate 10 is arranged such that one end is located below the driven roller 8a and the other end is located diagonally below. This second folded plate 10 also has
A stopper 10a movable in the length direction is provided.

The sheet that has passed through the paper folding section is guided by a paper discharge guide 25 and discharged onto the paper discharge belt 12.

The discharge belt 12 is stretched between pulleys 11a and 11b fixed to a drive shaft 19 and a driven shaft 23 rotatably supported by a frame 30, respectively. Note that a rotational force is applied to the drive shaft 19 from a drive device (not shown) via the drive gear 18. Also, drive shaft 1
A guide plate 24 is provided slightly below the position of the upper surface of the belt 12 between the belt 9 and the driven shaft 23, and supports the widthwise end of the sheet conveyed by the belt 12. ing.

Further, a lever shaft 20 is disposed below the substantially central portion between the drive shaft 19 and the driven shaft 23 in parallel with the drive shaft 19. The lever shaft 20 is also rotatably supported by the frame 30. A long plate-shaped lever 14 is fixed to one end of the lever shaft 20, and the lever 14 and the gear 17b are fixed to the other end. Have been.

A stacker roller 13 is arranged on the belt 12. The stacker roller 13 is supported by a stacker roller shaft 21, and the stacker roller shaft 21 is fitted into an elongated hole 26 provided at the tip of the lever 14. Therefore, even if the lever 14 rotates, the roller 13 always rotates along with the belt 12 while being in contact therewith.

On the extension of the belt 12, a paper receiving plate 15 is arranged. The paper receiving plate 15 is swingable about a shaft 15a.

The gear 17b fixed to the end of the lever shaft 20 is a gear 17a fixed to the shaft of the motor 22.
Is engaged. Therefore, by driving the motor 22, the lever 14 rotates in a limited range around the lever shaft 20. When the motor 14 moves the lever 14 to a specific position, the lever 14 presses the microswitch 16 and a signal is output from the microswitch 16.

This signal is given to a control unit (not shown). In this control unit, sheet folding information such as a sheet size and a folding shape is set in advance. The control unit drives and controls the stoppers 9a and 10a and the lever shaft 20 and the like, and controls the stoppers 9a and 10a and the roller. 13 is moved to a predetermined position based on the paper folding information.

Next, the operation of the paper folding machine according to the present embodiment thus configured will be described.

First, information (sheet folding information) on the sheet size, folding shape, and the like is given to the control unit. Then,
The control unit determines the stoppers 9a, 10 based on the information.
a is moved to a predetermined position. At the same time, the control unit drives the motor 22 to rotate the lever shaft 20 until the lever 14 presses the microswitch 16 (that is, to the home position). Then, when the lever 14 moves to the home position, the motor 22 is rotated in the reverse direction, and the lever 14 is rotated from this position by an angle corresponding to the information described above. Roller 13
With the rotation of the lever 14, the lever 14 moves on the belt 12 and stops at a predetermined position. For example, when the final size of the folded sheet is small, the rotation angle of the lever 14 from the home position described above is small, and the roller 13 is arranged at a position close to the rollers 6 and 8. When the final dimension is large, the rotation angle of the lever 14 from the home position is large, and the roller 13 is arranged at a position distant from the rollers 6 and 8.

When the stoppers 9a and 10a and the rollers 13 are arranged at predetermined positions in this way, sheet feeding starts. Sheets fed from a sheet bundle placed on the sheet feeding table 1 are separated into one sheet at a separating section constituted by a sheet feeding roller 4 and a separating plate 5, and the sheet is separated between a driving roller 6 and a driven roller 7. After passing, it advances along the surface of the first folded plate 9. When the front end of the sheet contacts the stopper 9a, the sheet is prevented from advancing and the driving roller 6
And the driven roller 7, bending occurs at the end of the folded plate 9. The bent portion of the sheet is sandwiched between the rollers 6, 8a (folding roller pair), and the sheet is folded as the rollers 6, 8a rotate. Next, the sheet that has passed between the rollers 6 and 8a is
Advancing along the plane of. When the leading end of the folding plate 10 contacts the stopper 10a, the sheet is bent at the end of the folding plate 10 on the roller 8a side. This bent portion is the roller 6, 8
(Folding roller pair). Then, the sheet is folded as the rollers 6 and 8 rotate.

The sheet folded in a predetermined fold as described above is then guided by the paper discharge guide 25 and discharged onto the belt 12 at a high speed. Then, the leading end of the sheet comes into contact with the roller 13 and is subjected to braking.
It is sandwiched between 2. At this time, since the speed of the belt 12 is lower than the speed of the sheet discharged from between the rollers 6 and 8, the sheets are sequentially overlapped and aligned as shown in FIG.

In this embodiment, as described above, when information such as the size and folding shape of the sheet to be folded is given to the control section in advance, the control section sets the stoppers 9a, 10a and the roller 13 in a predetermined manner based on the information. To the position of. For this reason, while being able to respond to various folding forms,
The device can be easily operated even by non-experts.

In this embodiment, the case where the braking member is a roller driven and rotated by the discharge belt 12 has been described. However, the shape of the braking member is not limited by this. For example, a sheet-like member (a leaf spring or the like) that sandwiches the sheet discharged from between the rollers 6 and 8 between the leading end and the belt 12 and urges the sheet against the belt 12 may be used.

[0031]

As described above, according to the present invention, the control means moves the stopper and the braking member to the predetermined positions based on the paper folding information such as the sheet size and the folding shape given in advance. Can be easily operated, and can cope with various folding shapes.

[Brief description of the drawings]

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

FIG. 2 is a plan view showing the paper discharge belt unit.

FIG. 3 is a side view showing the paper discharge belt unit.

FIG. 4 is a schematic diagram illustrating a state of a sheet moving on a discharge belt of the paper folding machine according to the embodiment of the present invention.

FIG. 5 is a schematic view showing various folded shapes.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1; paper feed table 2; auxiliary paper feed table 3; paper feed guide 4; paper feed roller 5; 13; paper discharge roller 14; lever 15; paper receiving plate 16; micro switch 22; motor

Claims (2)

(57) [Claims] 1. A sheet folding machine for taking out one sheet at a time from a sheet bundle placed on a sheet feeding table and folding the sheet into a predetermined folding shape, a conveying means for conveying the sheet, and a sheet conveyed by the conveying means. A folded plate provided with a stopper that abuts on an end of the sheet to prevent movement of the sheet, and a sheet that is prevented from moving by the stopper and is bent, is sandwiched between end portions of the folded plate. Roller pair that folds the sheet, a paper discharge belt that receives and conveys the sheet discharged from the pair of folding rollers, and is driven by the paper discharge belt to rotate following the paper discharge belt and brakes the sheet discharged from the pair of folding rollers. a roller applying a shaft for supporting the roller, the elongated hole of the shaft long hole provided at the distal end portion
The shaft in the major axis direction of the slot.
A lever that is movable and rotatably supported, a lever shaft that fixes the lever, a motor that rotates the lever shaft, and that the stopper is moved to a predetermined position based on paper folding information given in advance, and Control means for moving the roller to a predetermined position by operating a motor. 2. A sheet bundle from a sheet bundle placed on a sheet feeding table.
Paper folding machine that takes out sheets one by one and folds them into a predetermined fold
A conveying means for conveying the sheet;
The sheet conveyed by the
Folded plate provided with a stopper to prevent
The sheet whose movement has been blocked by the stopper and
The sheet is sandwiched between the end portions of the folding plate and the sheet is folded.
Folding roller pair to be folded and discharged from this folding roller pair
An output belt that receives and transports sheets, and this output belt
The folding roller provided on the
Insert the sheet discharged from the pair and
A plate member for braking and a support member for supporting the plate member
And moving the support member along the discharge belt.
A drive unit and the switch based on paper folding information given in advance.
Move the topper to a predetermined position and remove the support member.
Control means for moving to a predetermined position.
And a paper folding machine.