JPS5851863B2 - Paper collation method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper collating device, and more specifically, the present invention relates to a paper collating device, and more specifically, it perfects pressure contact between paper and rollers in a paper conveyance path, provides smooth and reliable paper feeding, and prevents paper jams. It is an object of the present invention to provide a paper collating device that is unlikely to cause malfunctions.

Page alignment, or so-called collation, is one of the post-processing tasks for copying, printing, etc., but when done manually, it is a labor-intensive and simple task that not only requires a large space and time, but also often makes mistakes. It had the disadvantage of committing a crime.

Therefore, various paper collating devices have been developed and put into practical use in order to mechanically process this collating work.

There are various forms of these paper collating devices, but their height can be adjusted depending on the height of the paper outlet of the printing machine, copying machine, etc. used in combination with the collating device. A bridge is used to guide the paper to the bottom of the device, and then the paper is conveyed upward through an upward paper conveyance path, and multiple paper trays arranged above and below feed the paper into the shelves one after another. It is widely used.

In this type of paper collating device, the most difficult technical challenge is to smoothly and reliably transport the paper upward in the upward paper transport path.

Conventionally, in a paper collating device having such an upward paper transport path, each paper tray forms a paper transport path with a paper feed roller provided for each shelf and an endless paper transport belt, and A common configuration is to dispose a press roller, which is biased by a spring or the like, at a position facing the paper feed roller.

However, such a configuration requires rollers with a large number of spring bearings, which not only complicates the structure but also increases manufacturing costs.Furthermore, it is prone to malfunctions such as paper jams during use. there were.

In addition, with this type of device, when a paper jam occurs in the paper conveyance path during use, the rear door housing the endless paper conveyance belt is opened and the jammed paper is removed. If there were a large number of press rollers inside, the door would be heavier to open and close, and the structure of the door would have to be strong.

On the other hand, the endless paper conveyance belt is made of breathable porous material, and multiple large exhaust fans are installed inside the machine.
Japanese Patent Application Laid-Open No. 106636/1983 proposes a means for conveying paper by adsorbing it to the surface of an endless belt.

Although this method allows paper to be conveyed smoothly, it requires a complicated and large device, and the noise emitted by the exhaust fan adds to the operating noise of the device, making it impossible to use it in an office. .

It is an object of the present invention to provide a paper collating device which does not have the above-mentioned drawbacks. A permanent magnet and a yoke integrally fixed on a non-magnetic band are disposed behind the endless paper conveying belt that cooperates with the rollers to form a paper conveying path and facing the paper feeding roller. This effectively makes them distant relatives.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a paper collating device to which the present invention is applied will be explained with reference to the accompanying drawings, and the specific configuration of one embodiment of the present invention will be clarified.

1 to 5 show a paper collating device having an upward paper conveyance path, which is convenient for applying the present invention, and FIG. 1 is a front perspective view of the device, and FIG. Figure 3 is a sectional view of the same, Figure 4 is a sectional view taken along the line I-I in Figure 3, and Figure 5 shows how the paper passes from the paper conveyance path to the paper tray and into the shelf. FIG. 2 is an explanatory diagram showing a state in which the device is fed.

First, a general explanation of the paper collating device will be given based on these drawings.

The base 15 of the device is made into a box shape to give it individuality.
In addition to this, a gate-shaped pillar 16 and side plates 17, 18 shown in FIG.
The upper part of the side plate is connected by a channel-shaped beam 19 and a triangular-shaped beam 20.

On the side plates 17 and 18, feed rollers 9 corresponding to the number of paper trays 1 are supported by bearings, and furthermore, weir plates 6 are fixed respectively.

As for the paper tray shelf 1, the projections 1a at both ends of the rear edge are inserted into the notches 6a at both ends of the weir plate 6, and the notches 1b at the front edge are integrated into the notches 3a of the front support 3 and the crosspieces of the shoji screen. 1 has been written.

The bridge 21 is mounted on a shaft 22 above the front end of the base 15, and its own weight is balanced by a torsion spring (not shown), so that the tip height can be stopped at an arbitrary position.

Further, in order to adjust the angle, that is, the height above the floor of the tip of the bridge, a link 23 whose length is adjustable is provided between the bridge and the gate-shaped pillar 16.

The main shaft 24 is decelerated by a belt and pulley from a drive motor housed in a box of the base 15 (not shown).
The driving pulley 25 drives the horizontal conveyance section endless cloth belt 26.

The other end of the belt is applied to a driven pulley 27 provided on the same axis as the bridge fulcrum shaft 22, and its tension is applied by a tension pulley 28.

A driving pulley 29, a driven pulley 30, and a belt 3L tension pulley 32 are mounted on the bridge part, and the driving pulley 30 and the gear 33 are connected from the shaft of the driven pulley 27 of the horizontal conveyance part.
, 34, 35, the power is transmitted.

The height of the bridge and the angle of the guide plate 38 are adjusted and adapted according to the height and discharge angle of the paper discharge rollers 36, 37 of the copying machine a.

The guide plate 38 is pivoted to brackets 39 on the left and right sides of the bridge with appropriate friction.

A paper presser 41 is mounted on the upper surface of the bridge belt, and is mounted on a shaft 40 exposed by cutting out a part of the guide plate 38.
It is pressed against the belt by its own weight of 1,000 yen to ensure smooth conveyance.

In the horizontal conveyance section, a guide plate 43 that also serves as an auxiliary stand for the base 15 is attached to the lower surface of the upper part of the belt 26, and one end of the guide plate 43 is shaped like a comb and has an upwardly arched shape to guide the upward paper conveyance path. This is a guide.

Further, on the top thereof, there is a box-shaped guide plate 44 with sufficient margin against the curling of the paper, and left and right side plates 17 .
It is removably attached between 18.

This box houses a roller 46 for feeding paper into the upward paper transport path, a light source lamp 2 for detecting paper storage, a switch 4 for detecting a paper jam, and the like.

Also, on the upper surface of the belt 26, a paper presser 48 similar to the bridge portion is swingably hung on the box 45 and serves as a paper presser.

The upward paper conveyance path is formed by a belt 63 provided in the rear door 49 and a group of 9 delivery rollers mounted between side plates 17 and 18 driven by the belt.

The rear door 49 can be opened and closed using the main shaft 24 at the bottom as a fulcrum, and has a shaft 52 connected from the main shaft 24 with a helical gear 5051 (Fig. 6). The gear 53 meshes with the upper helical gear 54.

The frame to which the drive shaft 55 with the helical gear 54 is attached is
It can move integrally with the rear door 49 when opening and closing the rear door 49.

The frame is defined by an angle 56 that passes vertically on the left and right sides of the rear door, and angles 57 and 58 that connect these vertically, and a driven roller is attached to the lower angle 58 as shown in FIG. A bracket 61 is attached to which a bearing 60 of 59 can slide vertically, and a spring 62 causes a belt 63
It is designed to give tension to.

In the upward paper conveyance path, each paper feed roller 9 has a
Deflection claws 5 are respectively attached to the operating shaft T3, and when the deflection claws 5 are in the non-operating position as shown in FIG. .

The paper 11 sent into the upward paper conveyance path is discharged onto the shelf 1 along the deflection surface of the deflection claw 5 by tilting the deflection claw 5 onto the shelf 1 .

The ejected paper 11 slides toward the weir plate 6 on the paper feed roller 9 side due to its own weight because the paper receiver is inclined upward on the shelf 1, and the paper receiver 10 and 1 are placed on the shelf 1.
As shown in Figure 4, they are piled up and collated.

In the paper collating device having the upward paper conveyance path described above, the details of the configuration of the 7 This will be explained with reference to the drawings and FIG.

FIG. 6 is a partially omitted vertical cross-sectional view showing the structure inside the rear door 49 corresponding to the uppermost and lowermost paper feed rollers 9 in the third cross-sectional view, and the portions already explained. The explanation will be omitted.

Further, FIG. 7 is an enlarged cross-sectional view of the vicinity of the paper feed roller 9.

In the figure, the paper feed roller 9 is made of a magnetic material such as soft iron, and inside the belt 63 in contact with it, there is a sixth roller at a position opposite to the paper feed roller 9.
As shown in FIG. 7 and FIG. 7, a permanent magnet 64 and a yoke 65 are provided, which are fixed to a flexible non-magnetic strip (for example, a thin stainless steel ribbon) 66 with non-magnetic studs (for example, aluminum rivets) 67. , this non-magnetic band 66
is screwed to the frame 68 at the top and bottom.

In addition, the front side where the magnet 64 and the yoke 65 contact the belt is a flexible non-magnetic band 6 with low friction and wear resistance.
6' (eg the stainless steel ribbon) is also attached to the frame 68.

The frame 68 is screwed to the angles 57, 58 at the top and bottom of the frame by means of its feet.

The concentration of magnetic flux obtained by the combination of the permanent magnet 64 and the yoke 65 efficiently generates magnetic attraction between the paper feed roller 9 made of a magnetic material (for example, soft iron), and the belt 63 and the paper interposed between them. An appropriate pressing force is generated between the belt 63 and the feed roller 9, and due to the friction between the two, the paper feed roller 9 is smoothly rotated as the belt 63 runs, and the paper 11 fed therebetween is conveyed.

Since the configuration of the present invention is as described above, it provides the following effects that have not been achieved in the past.

That is, (1) in conventional devices that use a large number of press rollers to obtain pressing force between the paper feed roller and the belt, if the rollers are eccentric, the pressing force will be uneven at that location; Furthermore, if the parallelism of the many rollers in the axial direction is poor, a uniform pressing force cannot be obtained as a whole, resulting in frequent failures due to paper jams in the conveyance path.

On the other hand, the magnetic attraction force applied to the magnetic roller by the magnetic flux of the present invention follows the rotation of the roller and always applies a uniform magnetic attraction force (pressure force) to the roller even if the roller is eccentric.

In addition, even if there is a slight deviation in the parallelism of each paper feed roller in the axial direction, the magnetic attraction force generated by the permanent magnet attached to the flexible non-magnetic band will result in a uniform pressing force as a whole. It does not act on each roller and cause malfunctions such as paper jams.

(2) Conventional equipment that uses a large number of press rolls requires a complicated structure inside the rear door, which increases manufacturing costs.In addition, the opening and closing of the rear door becomes heavy, and the opening and closing structure of the door must also be made sturdy. Ta.

According to the present invention, the structure inside the rear door is extremely simple as there is no need for any rotating parts for the large number of press rollers, and the overall weight is light, making it easy to open and close the door. In particular, there is no need for the rear door to have a sturdy structure, and therefore manufacturing costs can be significantly reduced.

(3) Unlike conventional devices that use a large fan to attract paper to a belt and convey it, there are no rotating parts inside the rear door that can cause noise other than the gear and pulley for driving the belt. The apparatus of the present invention does not produce any noise caused by the rotation of a large fan, and its operation is extremely quiet, making it suitable for collating work in combination with a copying machine, a small printing machine, etc. in an office.

[Brief explanation of the drawing]

1 to 5 show a paper collating device having an upward paper conveyance path to which the present invention is applied; FIG. 1 is a front perspective view of the device, FIG. 2 is a rear perspective view of the device, and FIG. Figure 3 is a sectional view of the same, Figure 4 is a sectional view taken along line I-■ in Figure 3, and Figure 5 is a sectional view of the same.
The figure is an explanatory diagram showing the state in which the paper tray is fed into the shelf, and FIG. 6 is a partially omitted vertical cross-sectional view showing the first embodiment of the present invention.
FIG. 1 is a cross-sectional view of the same. In the drawings, reference numeral 9 indicates a paper feed roller, reference numerals 51 and 58 indicate branches within the endless belt 63, 64 a permanent magnet, 65 a yoke, and 66 a non-magnetic band.

Claims (1)

[Claims] 1. A plurality of paper trays arranged vertically at predetermined intervals and tilted upward toward the front are connected to a shelf, and each paper tray cooperates with a paper feed roller provided for each shelf and the paper feed roller. In the paper collating device, each paper feeding roller 9 is made of a magnetic material, and behind the endless belt 63, each paper feeding roller 9 is provided. A permanent magnet 64 and a yoke 65 are located at opposite positions, and these are integrally fixed on a flexible non-magnetic band 66, and the non-magnetic band 66 is attached to the branches 57, 5B in the endless belt 63. A paper collating device characterized by being fixed at the top and bottom. 2. The paper collating device according to claim 1, wherein the front surfaces of the permanent magnet 64 and the yoke 65 fixed on the non-magnetic band 66 are further covered with a flexible non-magnetic band. 3. The paper collating device according to claims 1 and 2, wherein the non-magnetic band is a thin stainless steel ribbon.