JPS6348596Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a collator paper discharging device used as a terminal device of a copying machine, a printing machine, etc.

[Conventional technology]

In general, this type of collator has two types of collators: one in which a distributor moves sequentially along multiple trays to collate and feed the paper, and the other in which the distributor is fixedly placed on each tray and switches the conveyance path to collate and feed the paper. It is broadly divided into those that do.

In any of the above-mentioned types, a paper discharge roller disposed at the outlet end of the distributor discharges the paper into the tray with force to securely store the paper.

However, in a collator as disclosed in Japanese Patent Publication No. 46-14204, in which a distributor (feeding mechanism) is moved step by step along a plurality of trays, the distributor can be moved up and down by a suspension device such as a stem (not shown). This suspension device moves the distributor to an arbitrary tray, and the chain 5, which is different from the suspension device, drives the sprocket 17, and the paper ejection rollers 12, 1
3 is rotated to eject the paper into the tray.

[Problem that the invention attempts to solve]

(1) In this way, transfer the paper from the distributor to any tray 1.
In order to eject the paper to 0, in addition to a suspension device including a stem for supporting the distributor, a chain 5 for driving the paper ejection rollers 12 and 13 of the distributor is required, resulting in a complicated and expensive structure. .

(2) When the distributor moves forward and descends to the next tray, the sprocket 17 that is engaged with the chain 5 receives a rotational force in the opposite direction to the direction of rotation due to the rotation of the chain 5. As a result, the rotation speed of the sprocket 17 due to the rotation of the chain 5 becomes slow. Therefore, gear 18,1
Paper ejection roller 1 rotates via 9, 15, 16
The rotational speeds of Nos. 2 and 13 also become slower.

However, if the paper is fed into the distributor by the conveyor belt 3 while the distributor is descending,
Since the distributor is moving in the paper transport direction,
The relative velocity of the paper to the distributor becomes slower.

Therefore, when the distributor descends, the paper ejection roller 1
Even if the rotational speeds of rotation speeds 2 and 13 become slower, the relative speed of the paper becomes slower, so the paper can be ejected, but it is difficult to set the descending speed of the distributor.

In other words, if the descending speed of the distributor is increased, the rotational speed of the paper discharge rollers 12 and 13 becomes very slow, and if paper discharge is started before the distributor descends to a predetermined position, jams are likely to occur. Furthermore, if an attempt is made to reduce the decrease in the rotational speed of the paper ejection rollers 12 and 13, the descending of the distributor will be delayed, and the paper will not be ejected to the next tray in time.

Conversely, when the distributor is raised, the paper ejection rollers 12 and 13 rotate faster than normal, and when the paper is ejected before the distributor stops, the paper is ejected with force. , the alignment on the tray will be poor.

(3) By driving the chain 5 in one direction, the distributor is moved up and down while the sprocket 17 is continuously rotating in one direction. Forces in opposite directions act when the sprocket 17 is raised and lowered, and the load on the sprocket 17 is different when the sprocket 17 is raised and lowered.

[Purpose of invention]

This invention provides a collator paper ejecting device that can simplify the structure that supports the distributor and transmits the drive to the paper ejecting roller, and also allows stable rotation of the paper ejecting roller and easily controls the movement of the distributor. The purpose is to

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

As shown in FIG. 1, a collator 33 and a stacker 14 are provided at the paper discharge port 31 of a main unit 21 such as a copying machine or a printing machine, and are selectively switched by a gate 13 in FIG. It's summery.

A collator that sequentially collates and feeds paper supplied from the paper discharge port 31 to multiple trays includes one in which a plurality of trays are arranged vertically and vertically, and one in which trays are arranged horizontally and horizontally. is known, but the collator 33 has a plurality of trays 35 arranged vertically in parallel to form a tray row 1.

For example, 10 trays 35 are arranged vertically in the tray row 1, and a conveyor belt 7 is stretched between a pair of upper and lower pulleys 37 and 39, as shown in FIG.

The paper reaches the conveyor belt 7 from the paper outlet 31 of the main unit 21 via the entrance guide 8, and is sandwiched between the conveyor belt 7 and the winding belt 9.
The paper is configured to be discharged to a predetermined tray 35 via the distributor 2.

The winding belt 9 is made of a flexible sheet such as a modified polyester resin (trade name Mylar), and its tip end is attached to the distributor 2, and its base end is wound around a winding roller 12 provided at the entrance of the apparatus.

The distributor 2 includes a conveyor belt 7 and a winding belt 9.
It is equipped with a finger claw 10 for peeling off the paper from the conveyance path between the trays 1 and 2, and a pair of paper ejection rollers 4 provided in the paper ejection roller 3. It is set to be delivered.

Further, the distributor 2 is fitted and supported by a pair of left and right stems 5 so as to be vertically movable, and is suspended by a constant force spring member 16 wound around a winding roller 12.

Therefore, this distributor 2 is always urged upward in FIG. 2, but the progressive drive wire 17 is wound around the winding drum 18 so as to pull down the distributor 2 against the spring member 16. Yes, this winding drum 18
A drive motor 22 is connected to the drive motor 22 . Therefore, when the winding drum 18 is intermittently rotated via a clutch or the like, the distributor 2 moves step by step along the tray row 1 and faces the entrance of the trays 35 one after another.

Further, the stem 5 of the distributor 2 connected to one side of the paper ejection roller 4 is connected to a drive system 6 to rotate the paper ejection roller 4.

That is, a drive system 6 including a drive motor 22 is connected to one of a pair of left and right stems 5 to which the distributor 2 is vertically slidably fitted, and the stem 5 is rotated.

Further, the illustrated drive system 6 is configured to drive the conveyor belt 7 and the winding drum 18 by the rotation of the motor 22.

By the way, the stem 5 has a key groove carved into it.
It engages with a key of a bevel gear 23 provided in the fitting portion of the distributor 2.

This bevel gear 23 and a bevel gear 24 attached to one side of the paper discharge roller 4 mesh with each other.

Therefore, the distributor 2 moves up and down along the rotating stem 5, and at the same time, the discharge roller 4 rotates in response to the rotation of the stem 5.

It goes without saying that the rotational speed of the paper discharge roller 4 can be freely set by selecting the meshing of the bevel gears 23 and 24 of the stem 5, the roller diameter of the paper discharge roller 4, and the like.

<Effects of Examples> According to the examples described above, the following effects can be obtained.

(1) The distributor 2 is supported by the stem 5 so as to be movable up and down,
This stem 5 is connected to an appropriate drive system 6 and rotated, and the direction of transmission of the rotational force of the stem 5 is set to the bevel gear 2.
3 and 24 to rotate the paper ejection roller 4 by 90 degrees, as in Japanese Patent Publication No. 46-14204, a drive transmission system such as a chain is used separately from the stem 5 as a suspension device for the distributor 2. Distributor 2 is operated only by stem 5 without providing any mechanism.
The drive can be transmitted to the paper discharge roller 4 of the distributor 2.

Therefore, the structure for supporting the distributor 2 and transmitting the drive to the paper ejection roller 4 can be simplified, and it is also possible to reduce the size and weight.

(2) Even if the distributor 2 is moved up and down, the stem 5 is not affected by this up and down movement, so the rotational speed of the stem 5 does not change and the paper ejection roller rotates at a constant speed.

Therefore, when setting the descending speed of the distributor 2, it is sufficient to set the distributor 2 so that it faces the next tray 35 by the time the paper reaches the paper ejection roller 4.
Setting the descending speed of the distributor 2 is easier than before.

Furthermore, even if paper ejection is started while the distributor 2 is rising, the rotational speed of the paper ejection roller 4 is constant, so that the sheets can be ejected onto the tray 35 in good alignment.

(3) Even if the distributor 2 is moved up and down, the drive system of the paper discharge roller 4 is not affected, so the distributor 2 can be moved up and down smoothly.

[Modified example]

Although one embodiment of this invention has been described above, this invention is not limited to the above embodiment, and for example, the following modifications are possible.

What is shown in FIG. 4 is the bevel gear 2 of the above embodiment.
3 and 24, friction wheels 23M and 24M are used to transmit the rotational force of the stem 5 to the paper discharge roller 4. In the illustrated example in particular, the friction wheel 24M is changed in speed by an electromagnetic solenoid 25. Alternatively, a sensor may be used to detect when the trailing edge of the paper leaves the conveyor belt 7, and the paper discharge roller 4 is accelerated to forcefully discharge the paper.

Further, a drive motor 22 is used as a structure for accelerating the paper ejection roller 4 after the trailing edge of the paper leaves the conveyance section.
It is only necessary to interpose an appropriate speed change device between the distributor 2 and the distributor 2, and it is also possible to use a drive motor built into the distributor 2, without relying on this invention. It can be ejected quickly, reducing the risk of paper getting caught during storage.

[Effect of idea]

The invention described above is a collator sheet discharging device equipped with a distributor that sequentially moves intermittently along a plurality of trays arranged in parallel and discharges sheets onto the trays using a sheet discharging roller. At the same time, this stem is connected to an appropriate drive system and rotated, and the rotational force is transmitted to the paper ejection roller through means for changing the transmission direction of the rotational force of the stem. Since the paper ejection roller is rotationally driven, the stem can support the distributor and transmit drive to the paper ejection roller of the distributor, and the structure supports the distributor and transmits drive to the paper ejection roller. can be simplified.

Furthermore, since the intermittent movement of the distributor and the rotational operation of the stem are not linked, the discharge roller can be rotated stably, and the movement of the distributor can be easily controlled.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of this invention; Fig. 1 is a perspective view of the entire device, Figs. 2 and 3 show an example of the collator, Fig. 2 is a side view, and Fig. 3 is a schematic front view. It is an explanatory diagram. Moreover, FIG. 4 is an explanatory diagram showing a modified example. 1... Tray row, 2... Distributor, 3... Output port, 4... Output roller, 5... Stem, 6... Drive system, 32... Collator, 35... Tray.

Claims (1)

[Scope of utility model registration request] A collator paper discharging device including a distributor that sequentially moves intermittently along a plurality of trays arranged in parallel and discharges paper onto the trays by a paper discharging roller,
The distributor is slidably supported on a stem, and the stem is connected to an appropriate drive system for rotation, and the stem is rotated by means for changing the transmission direction of the rotational force of the stem to the paper ejection roller. A collator paper ejection device characterized in that the paper ejection roller is rotationally driven by transmitting force.