JPS59230965A - Paper folder - Google Patents

Abstract

PURPOSE:To increase the number of sheets to be accommodated per tray or per sorter bin by lessening the swelling at the folded part of a sheet of paper. CONSTITUTION:A sheet of paper which is folded in a Z-form by means of a paper folding mechanism 11, is conveyed by means of a belt 14 stretched around between pulleys 12a and 12b rotating clockwise and by means of a belt 15 stretched around between pulleys 13a and 13b rotating counterclockwise, entering a crushing mechanism on the following stage where the folded part is crushed. The sent in sheet of Z-form folded paper is carried onto a base 18. A support block 20 which is slidably held by a guide bar 19 and a press roll 21 which is held by this support block 20 are provided in a position opposite to the base 18. The press roll 21 moves and crushes the first folding part of said sheet of Z- form folded paper and the operation is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a skin folding machine, and more particularly to a paper folding machine that further flattens the creases after folding the paper.

(Conventional technology) FIG. 1 shows a schematic diagram of a conventional paper folding mechanism.

The number of paper folds is 1st and 2nd as shown in the figure.

The third and fourth four folding rolls 1.2, 3.4 and the first
, second guide/stoppers 5 and 6.

The 1st and 3rd fold [ ] 1 and 3 are in the counterclockwise direction, and the 2nd
, the fourth folding rolls 2, 4 are rotated clockwise. The paper enters from the direction of arrow 7, is Z-folded, and passes through the direction of arrow 8.
↑j1 is sent in the direction.

Next, the operation of the paper folding mechanism constructed as described above will be explained with reference to FIG. In the figure, 9 indicates paper, and other symbols indicate the same items as in FIG.

First, as shown in FIG. 2(a), the folding roller I1 9 enters between the first and second folding rolls 1 and 2, and its tip 9a touches the first guide and stopper 5. is sent in the direction of arrow a. Finally, it hits the stopper portions of the first guide/stops 1 to 5. When the paper 9 is further fed in the direction of the arrow a by the first and second folding rolls 1 and 2, the paper 9 is bent along the second folding roll 2, and the bent portion is as shown in FIG. It is sandwiched between the second and third folding rolls 2, 3 as shown in b).

As a result, a first folded portion 9b of the paper is formed, and this folded portion 9b advances in the direction indicated by the arrow.

As the operation shown in FIG. 2(b) progresses, the first folding portion 9h becomes the second
When it hits the brim of the guide/stopper 6, the paper 9
The tip 9a of the folding roller 2.3 is pulled out from between the second and third folding rolls 2.3, and as shown in FIG. It enters between the fourth folding rolls 3 and 4. Then, the leading edge 9a of the paper 9
is the third. A fourth folding roll 3.4 sends it in the direction of exit. At this time, the paper 9 bends along the third folding roll 3, and finally, as shown in FIG. As a result, a second folded portion 9C is created.The second folded portion 9C is ejected together with the leading edge 9a of the paper 9 in the direction of arrow C.As the operation progresses further, the second folded portion 9C is The first folding portion 9b is pulled out from between the third and fourth folding rolls 3.4,
Finally, the trailing edge of the paper 9 passes between the folding rolls 3 and 4.

In the above manner, the first
A Z-folded sheet 9 having second folding portions 9h and 9c is obtained.

By the way, when the Z-folded paper is stored in a tray or sorter bin 10 or the like as shown in FIG.
There was a problem that the number of sheets per unit could not be increased.

(Purpose) The present invention was made to eliminate the above-mentioned drawbacks, and its purpose is to provide a paper folding machine that prevents paper having folds such as Z folding or double folding from bulging at the folds. It is about providing.

(Required) In order to achieve the above object, the present invention is characterized by providing a mechanism for re-squeezing the fold after folding the paper.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 5 is a side view of one embodiment of the present invention. Also, the 6th
The figure shows a plan view of the crushing mechanism of FIG. 5.

In FIG. 5, a portion surrounded by a broken line shows, for example, the paper folding mechanism 11 described in FIG. 1. Mechanisms other than those shown in FIG. 1 are conventionally known as the paper folding mechanism 11, but their explanation will be omitted here.

In the paper folding mechanism 11, the paper folded, for example, seven times, is folded between the bells 1 to 1/I stretched between the pulleys 12a and 121) rotating in the chronological direction, and the pulley 1 rotating in the counterclockwise h1 direction.
It is sent by bells 1 to 15 stretched between 3a and 13b, and enters a crushing mechanism that crushes the next stage of folds.

In addition, 16 is a light source for ze/li, 17 is a light for sensor &i16
The presence of paper is detected by these optical lenses.

The Z-folded paper sent as "Bell 1 to 14.15" is
8 carried above. A support block 20 J movably supported by a guide bar 19 and a press roll 21 supported by the support block 20 are provided in one vertical position facing the base 18 . In FIG. 6, the guide bar 19 is indicated by a broken line, and the drawing is drawn through the guide bar 19. A cable 22 has one end connected to the block 20 and the other end connected to the first pulley 23 and the second pulley 2/l.

At the base 18'' and near the first pulley 23,
A first limit switch, not shown, is provided. The first glue 1 to switch are turned on by the press roll 21 when the press roll 21 moves in the direction of the first pulley 23 and finishes crushing the first fold of the Z-folded paper. Ru. On the other hand, base 1
A second limit switch (not shown) is installed on the pulley 8 and near the second pulley 24. This second limit switch is turned on by the press roll 21 when the press roll 21 moves toward the second pulley 24 and finishes crushing the second fold of the Z-folded sheet.

A feed roll 25 is provided on the paper discharge side of the base 18.

FIG. 7 shows the guide bar 19 and support block 20.
, and a perspective view of the press roll 21. goo 1 le 2
2 is connected to blocks 1 to 20 in a place that cannot be seen in the figure. In the figure, both sides of the guide bar 19 are broken.

FIG. 8 shows a control block of this embodiment. Optical sensor 1
7. Output from the first limit switch 31 placed near the first pulley 23 on the base 18 and the second limit switch 32 placed near the second pulley 24 on the base 18. The signal is input to the microcomputer main body 34 via the I10 boat 33. On the other hand, the control signal processed by the microcomputer main body 34 is
'33, drive means 3 of pulleys 12a, 13a
5. Drive means 36 for the first and second pulleys 23.24
, and is sent to the drive means 37 of the delivery roll 25.

Next, the flow diagram in FIG. 9 showing the functions of the microcomputer main body 34 is shown.
-l-, the operation of the crushing mechanism of the paper folding machine of this embodiment will be explained.

Step S1: It is determined whether the leading edge of the sheet folded seven times has been detected by the sensor υ17.

Step S2: When the leading edge of the seven-folded paper is detected by the sensor 17, the first loaf of the Z-fold arrives at the position where the press roll 21 traces on the base 18. : A determination is made as to whether l'l (scheduled time) has elapsed.

Step S3...When the scheduled time has elapsed, pulley 1
Driving of 2a and 13a is stopped. This causes the paper to stop moving.

Step S4...The first pulley 23 is driven.

Based on this, the press roll 21 is moved to the second pulley 24
is moved from near the first pulley 23 to crush the first fold of the paper.

Step S5: It is determined whether the first limit switch 31 is turned on. When the switch 31 is turned on, it means that the first fold has been compressed.

Step S6...The driving of the first pulley 23 is stopped.

Step S7: The pulleys 12a and 13a are driven to send the paper toward the delivery roll 25.

Step S8...The second 1st loaf is press roll 2
It is determined whether the time required to reach the position of trajectory No. 1 (scheduled time) has elapsed.

Step S9...When the scheduled time comes, the pulley 12a
, 13a are stopped, and the paper is stopped.

Step SIO: Drive the second pulley 24 to move the press roll 21 toward the second pulley 24.

In response to this, the press roll 21 crushes the second fold of the paper.

Step S11: It is determined whether the second limit switch 32 protected near the second pulley 23 is turned on. When the switch 32 is turned on, the 2
This means that the pressing of the second crease has been completed.

Step S12...The pulleys 12a, 13a and the delivery roll 25 are driven, and the separated paper is discharged.

Step S13: It is determined whether the copying has been completed, and if no, the process returns to step S1. On the other hand, if it is yes, it is the end.

If J: is applied to this embodiment as shown in FIG.

Although the embodiment described in -F has been explained using Z-folded paper as an example, it is clear that it is within the scope of the present invention to crush the fold of paper folded in half with a roll moving in the direction of the fold. It is.

(Effects) As is clear from the above description, according to the present invention, it is possible to reduce the bulge of paper folds [1], so it is possible to increase the number of sheets stored per i-lay or one sorter bin. can.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a conventional paper folding mechanism, Fig. 2 is an explanatory diagram of the operation of the paper folding mechanism, Fig. 3 is an explanatory diagram of Z-folded paper, and Fig. 4 is a diagram of the Z-folded paper. 5 is a schematic diagram of an embodiment of the present invention, FIG. 6 is a plan view of the crushing mechanism of this embodiment, and FIG. 7 is a press 1- Perspective view of Le and its surroundings,
FIG. 8 is a control block diagram of this embodiment, and FIG. 9 is a flowchart 1 to 1 for explaining the functions of the microcomputer main body in FIG.
shows. 11... paper folding mechanism, 12a, 13a... pulley,
18...Base, 19...Guide bar, 20...
Support 1~Block, 21...Press roll, 22.
...Cable, 23...First pulley, 24...Second pulley, 25...Feeding roll Attorney Michito Hiraki and 1 other person Figure 1 Figure 2 (a) (b) (c) (d) Figure 5 Figure 6

Claims (2)

[Claims] (1) Set IJ7S R structure a5 and the paper fold I several times J
: A paper folding machine that is equipped with a mechanism that crushes the creases of folded paper. (2) A patent characterized in that the mechanism for crushing the folds of the paper includes a base and a press roll that moves the paste in the direction of the folds.