JPS62196261A - Suction type sheet distributor - Google Patents

Abstract

PURPOSE:To guide sheets accurately up to a part of a distributor even in case these sheets are fed in a state of being overlapped with each other, by stretching a strip sheet presser across plural rollers disposed zigzag and elastically energized outward. CONSTITUTION:A strip sheet presser 25, whose one end is engaged with a separating claw 21, is being drawn out beneath along a sheet conveying part of a conveyor belt 6. In response to the drawing of this strip sheet presser, tensile force of the presser 25 goes up, whereby a tension spring 32 is extended longer, and tension rollers 27 disposed zigzag are getting closer with one another. And, when the separating claw 21 is going up reversely, the tension spring 32 is contracted so as to absorb the looseness of the strip sheet presser 25, therefore an interval between these tension rollers 27 and 27 is widened. doing like this, when the separating claw 21 comes down up to a spot proximate to a sheet housing tray 12i where copying paper should be discharged, a belt 20 stops its running at this position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a distributing device including a so-called sorter for distributing sheets such as copy paper, and particularly to a distributing device including a so-called sorter or the like for distributing sheets such as copy paper. This invention relates to a suction-type sheet distributing device that distributes sheets while conveying them.

PRIOR ART AND PROBLEMS The conventional suction-type sheet distribution device as described above generally applies negative pressure to the conveying belt to attract the sheet to the belt and then transfers the sheet to an appropriate location during the belt conveyance process. The sheet that has been sucked onto the belt is peeled off from the belt and distributed. Therefore, when two sheets are fed to the belt while overlapping each other, only the side sheet that is in contact with the conveyor belt is attracted to the belt, and the conveyance function of the belt performs normal conveyance. The suction force is not applied to the sheet on the other side, and the sheet moves away from the conveyor belt, resulting in a paper jam in an unpredictable location.

In addition, in conventional suction type sheet distribution devices, the structure of the distribution device for isolating sheets from the conveyance heald and distributing them to each sheet storage tray is complicated, resulting in a high risk of failure and high cost. There were drawbacks.

OBJECTS OF THE INVENTION Accordingly, an object of the present invention is to accurately guide the sheets to a portion of a dispensing device even when two or more sheets are fed in an overlapping state, and to prevent paper jams in the middle. To provide a suction type sheet distributing device which does not have problems such as causing problems, is structurally simple, has few failures, and is low in cost.

Structure of the Invention In order to achieve the above object, the main means adopted by the present invention is an endless conveyor belt which is wound around a succinct device to form a partially linear sheet conveyor portion. , a sagging device provided inside the conveyor belt to generate pressure in the conveyor belt, a sheet storage tray arranged in multiple stages facing the sheet conveyor, and the conveyor belt. In the suction type distributing device, the distributing device is provided with a distributing tool for distributing sheets conveyed by a sheet storage tray to each of the sheet storage trays, the distributing tool moves along the sheet conveying portion, and the sheet is conveyed by the conveying belt. The belt-shaped sheet presser is provided with a sheet peeling means for peeling the sheet from the conveyor belt, and the belt-shaped sheet presser, one end of which is attached to the distribution tool and the other end of which is attached to a predetermined location on the machine base, is moved in a staggered manner. The suction type sheet distribution is characterized in that the belt-shaped sheet presser is stretched over a plurality of rollers arranged and elastically biased outward, and pulled out along the sheet conveying portion as the distribution tool moves. It is a device.

Before a working sheet is fed into the dispensing device, sheet stripping means is moved to a position corresponding to a predetermined sheet storage tray. At the same time, one end of the belt-shaped sheet presser, whose one end is hooked to this distribution tool, is pulled in the direction along the conveyor belt, thereby creating a gap between the belt-shaped sheet presser and the sheet conveying portion of the conveyor belt. A flat gap is formed to prevent the sheets being fed from flying out.

Then, the strip-shaped sheet presser is arranged in a staggered manner by the amount by which the strip-shaped sheet presser is pulled out downward, and the distance between the plurality of rollers over which the strip-shaped sheet presser is 18) changes, and the amount of the pull-out of the strip-shaped sheet presser is absorbed.

Therefore, when two or more sheets are stacked on top of each other fed to the confluence between the conveyor belt and the belt-shaped sheet presser, the sheets on the conveyor heald side are attracted to the conveyor belt by the negative pressure from the suction device, and The outer sheet other than the sheet tries to fall downward along the gap between the belt-shaped sheet presser and the conveyor belt, but the sheet is conveyed at a position where its leading edge is further forward than the sheet that is attracted to the conveyor belt. These sheets are attracted to the belt, and are not scattered outside while being straightened, but are sent along the gap to a distribution device that is stopped at a position corresponding to a predetermined sheet storage tray, thereby transporting the sheets. peeled off from the belt,
The sheets are then discharged to the predetermined sheet storage tray.

Next, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. here the first
The figure is a schematic side sectional view of a sorter for a copying machine which is an example of a suction-type sheet distributing device according to an embodiment of the present invention, and FIG. 2 is a partial perspective view showing the structure of a band-shaped sheet holding portion of the sorter. .

Note that the following example is only one specific example of the present invention, and is not intended to limit the technical scope of the present invention.

In FIG. 1, numeral 1 denotes a sorter body which is attached to the side of a copying machine body 2. As shown in FIG. Fixing roller 3 provided in the copying machine main body 2
The fixed copy paper is carried out from the copying machine main body 2 by a paper discharge roller 4 and is supplied to a paper feed roller 5 on the sorter main body 1 side.

An upper conveyance roller 7 constituting a part of a tension device for winding the conveyance belt 6 is provided on the downstream side in the conveyance direction of the copy paper by the paper feed roller 5, and the upper conveyance roller A lower conveyance roller 8 parallel to the conveyance roller 7 is provided, and auxiliary rollers 9m and 9h parallel to the conveyance roller 7.8 are provided closer to the copying machine main body 2 than the upper conveyance roller 7 and the lower conveyance roller 8. ing. The above-mentioned conveyance belt 6 forms an endless belt as shown in the figure (from the above-mentioned upper conveyance roller 7, passing around the outer periphery of the auxiliary rollers 9i and 9b, passing through the lower conveyance roller 8, and reaching the upper conveyance roller rough again. A tension device is constituted by the upper conveyance roller 7, the lower conveyance roller 8, and the auxiliary rollers 9m and 9b.

The conveyor belt 6 may be a plurality of narrow belts wrapped around the rollers 7.8, 9.degree., 9 in an axially divided state, or a plurality of narrow belts wrapped around the rollers 7.8, 9.degree., 9. ．． 9I,
It is made up of a breathable cloth belt or the like that is wrapped around almost the entire axial length of the belt.

A straight line portion of the conveyance belt 6 from the upper conveyance roller 7 to the lower conveyance roller 8 constitutes a sheet conveyance portion.

In addition, in the internal construction of the endless conveyor belt 6, there is provided a fan motor 10, and a mechanism for applying negative pressure generated by the fan motor 10 to the surface of the sheet/till feed portion of the conveyor belt 6. A suction device consisting of a ventilation tray 11 is provided.

Also, the sorter main body 1 is opposite to the copying machine main body 2 (1'
A multi-stage sheet storage tray 12i, 12b...12n is provided on the side surface of the sheet facing the sheet conveyance section,
This seat storage tray 12. A distribution device 13, which is a main component of the present invention, is provided in the space between the sheet conveying portion.

The distributor 13 includes a sheet peeling means to be described later, and a driving means for moving the sheet peeling means along the sheet conveying portion. That is, an upper drive roller 191 and a lower drive roller 19+ are provided adjacent to the upper conveyance roller 7 and the lower conveyance roller 8, and an endless belt 20 is wound around these drive rollers 19° and 19. It is being A peeling claw 21 of 1111, which is an example of sheet peeling means, is attached to this belt 20.

The tip of the peeling claw 21 is in contact with or intersects with the seam feeding portion bone of the conveyor belt 6, so that if a relative movement occurs between the tip and the conveyor belt 6, The sheet adsorbed onto the conveyor belt is scraped off by the tip of the peeling claw 21, moves along the peeling claw 21, and is sent out by the feed roller 23 housed in the main body portion 22 of the peeling claw 21. , and are ejected to the corresponding sheet storage tray.

The main body portion 22 of the peeling claw 21 is provided with a protrusion 24 that extends to the vicinity of the sheet m feeding portion bone of the conveyor belt 6, and one end of a band-shaped sheet presser 25 is engaged with the tip of the protrusion 24.

As shown in FIG. 2, this belt-shaped sheet presser 25 is wound around a plurality of tension rollers 27, 27, etc. arranged in a staggered manner via an intermediate roller 26 provided above the projection 24, and the other end As shown in FIG. 1, it is fixed to the engaging portion 28 at the upper end of the sorter main body 1.

The tension rollers 27, 27, . . . are bars 31, 31, .
・It is rotatably attached to.

Each of the above bars 31, 31... is the sorter main body 1.
The tension spring 32 connected between the sorter body l
elastically pulled horizontally outward. Therefore,
Due to the tension of the tension spring 32, the band-shaped sheet presser 25
are kept under appropriate tension at all times, as shown in Figures 1 and 2.
As shown in the figure, it is stretched over tension rollers 27, 27, . . . in a zigzag bent state.

Next, the copy paper distribution operation in the above-described embodiment will be explained. Prior to distributing copy paper, the belt 20 is driven and driven by a command from the copying machine main body, and the peeling claw 21 attached to this belt 20 approaches the sheet storage tray 21□ from which a predetermined copy paper is to be ejected. Stop at a position. At this time, the strip-shaped sheet presser 25, one end of which is hooked to the peeling claw 21, is pulled out downward along the sheet conveyance portion of the conveyor belt 6 (in response to the pull-out of the strip-shaped sheet presser, the strip-shaped sheet presser 25 increases, the tension spring 32 is extended, and the tension rollers 27, 27, etc. arranged in a staggered manner move closer to each other.

Conversely, when the peeling claw 21 moves upward, the tension spring 32 contracts to absorb the slack in the band-shaped sheet presser 25, and the interval between the tension rollers 27 and 27 widens.

As described above, when the peeling claw 21 descends to the vicinity of the sheet storage tray 21□ where the copy paper is to be ejected,
At that position, belt zO stops running. In this state, fixing roller 3. The copy paper that has been ejected via the paper ejection roller 4 is transferred to the paper feed roller 5. After going through guide 33,
Sheet of conveyor belt 6) 11! It is inserted into the gap formed between the Ii4 portion and the band-shaped sheet presser 25. The copy paper inserted into the gap is attracted to the conveyor belt 6 by the negative pressure generated by the fan motor 10, and as the conveyor belt 6 runs, it is conveyed to the lower peeling claw 21. When two sheets of copy paper are stacked on top of each other, not only the copy paper on the conveyor belt 6 side is attracted to the conveyor belt 6, but also the negative pressure exerted by the conveyor belt 6 initially acts on the copy paper next to it. In order not to
Due to its own weight, it tries to fall downward along the gap, but when it advances further downward than the VJIII copy paper, its leading end is attracted to the conveyor belt 6.

Therefore, in the end, the two sheets of copy paper are conveyed to the conveyor belt 6 in a row without any deviation, and the two sheets of copy paper are conveyed by the peeling claw 21.
After reaching this point and being peeled off from the conveyor belt 6 by the peeling claw 21,
The sheet is discharged by the feed roller 23 to a predetermined sheet storage tray 12t.

Effects of the Invention As described above, the present invention provides an endless conveyor belt that is wound around a tension device to form a partially linear sheet feeding portion, and a sheet of the conveyor belt. a suction device provided inside the conveyor belt to generate negative pressure in the conveyance section; a multistage sheet storage tray arranged opposite to the sheet conveyance section; In a suction-type dispensing device comprising a dispensing tool for dispensing to each sheet storage tray, the dispensing tool moves along the sheet conveying portion, and the dispensing device moves along the sheet conveying portion, and the distributing device is moved by the conveying belt! A belt-shaped sheet comprising a sheet peeling means for peeling the narrowed sheet from a conveyor belt, one end of which is attached to the distribution tool, and the other end of which is attached to a predetermined calciner of a machine base. The presser foot is arranged in a staggered manner and is stretched over a plurality of rollers that are elastically biased outward, and as the distributor moves, the belt-shaped sheet presser is pulled out along the narrowing portion of the sheet. Because this is a suction-type dispensing device that is characterized by Together, the sheets are distributed to the sheet storage trays through the gap between the belt-shaped sheet presser and the conveyor belt, and there is no possibility that the sheets will deviate from the conveyance path during conveyance and cause paper jams.

Further, the sheet distribution device according to the present invention can be configured with an extremely simple structure as shown in the embodiments already described, and therefore can be configured as an inexpensive device with few failures.

[Brief explanation of drawings]

FIG. 1 is a schematic side sectional view of a sorter for a copying machine, which is an example of a suction-type sheet distributing device according to an embodiment of the present invention, and FIG. 2 is a partial perspective view showing the structure of a band-shaped sheet holding portion of the sorter. It is. (Explanation of symbols) ■... Sorter body 2... Copy machine body 3...
Fixing roller 6... Conveyance belt 7.8... Conveyance roller 9... Auxiliary roller 10... Fan motor
11... Ventilation tray 12... Sheet storage tray 13... Distribution W 19... Claw drive roller 2
0... Belt 21... Peeling claw 24... Protrusion 25... Band-shaped notebook presser 26... Intermediate roller 27... Tension roller 29... Guide plate 30... Long hole 31...・Bar 32...Tension spring.

Claims (1)

[Scope of Claims] An endless conveyor belt that is wound around a tension device to form a partially linear sheet conveyance portion; and a sheet conveyor belt that generates negative pressure in the sheet conveyance portion of the conveyor belt. a suction device provided inside the conveyor belt; a multistage sheet storage tray arranged opposite to the sheet conveyance section; and a distribution device that distributes the sheets conveyed by the conveyor belt to each of the sheet storage trays. In the suction type sheet distributing device, the distributing tool moves along the sheet conveying portion and includes sheet peeling means for peeling the sheet conveyed by the conveying belt from the conveying belt. A belt-shaped sheet presser, which has one end attached to the distribution tool and the other end attached to a predetermined location on the machine base, is hung on a plurality of rollers arranged in a staggered manner and elastically biased outward. A suction-type sheet distributing device, characterized in that the strip-shaped sheet presser is pulled out along the sheet conveying portion as the dispensing tool moves.