JPS6312132Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a collator as an end device for copying machines, printing machines, etc.

Generally speaking, in this type of collator, the distributor moves sequentially along the tray rows to collate and feed the paper, and the other type collates and feeds the paper by switching the conveyance path using a distributor fixedly placed on each tray. The present invention relates to a type in which the above-mentioned distributor moves step by step.

In order to have a structure in which such a distributor is moved step by step in a row of trays, the distributor is suspended and supported by a winding pulley using a suspension member such as a belt or wire, and the winding pulley is given a winding habit by a spring. It is widely known that the suspension member moves forward by a predetermined amount.

On the other hand, a method of feeding paper to a distributor is to stretch a conveyor belt along the tray rows, insert the paper into the distributor from the inlet end of this belt, and tension the belt to sandwich the paper between both belts. It is also known that it is fed by

Conventionally, the above-mentioned suspension member and clamping belt have been widely used to be wound around separate pulleys. Needless to say, winding paper onto individual pulleys increases the size of the device, and if the winding amounts differ from each other, reliable conveyance or accurate step-by-step movement cannot be achieved, leading to collation errors and paper jams. There are some drawbacks.

Therefore, a system has been proposed, for example, in Japanese Patent Publication No. 46-14204, in which the suspension member and the clamping belt are made of the same material, and the belt is crimped to the conveyor belt and the distributor is suspended. In order to suspend the paper, it must be a strong belt with little expansion and contraction, and in order to sandwich the paper between the conveyor belt and convey it, it must be extremely soft. It can be said that there are no materials that satisfy this requirement. Therefore, in the publication of the same issue, a vacuum suction device is installed inside the conveyor belt, and when paper is attracted to the conveyor belt and conveyed, the excess suction area is simply shielded by the above-mentioned suspension member. In this case, the suspension member can be made of a relatively strong material such as steel.

In view of the above points, the present invention provides a simple structure for suspending the distributor and conveying paper, and provides reliable suspension and reliable conveyance, and also ensures that the suspension and conveyance are not disturbed as the distributor moves. Its main purpose is to provide collators that never occur.

The configuration will be described in detail below based on one embodiment shown in the drawings.

8 is the main unit of a copying machine, printing machine, etc., and 8'
The collator that sequentially collates and feeds paper from the discharge port 8' to multiple tray rows is a rigid type in which multiple tray rows 1 are arranged vertically in parallel, and a horizontal type in which multiple tray rows 1 are arranged in parallel in the horizontal and horizontal directions. etc. are known, but to explain the present invention regarding a rigid collator, the tray row 1 is composed of multiple stages (the illustrated one is 10 stages) arranged vertically in parallel, and a conveyor belt 2 is installed along the inlet end of the tray row 1. is stretched between a pair of upper and lower pulleys.

The paper from the discharge port 8' of the main unit 8 passes through the entrance guide 9 and reaches the conveyor belt 2, but a gate 10 is provided between this gate and the paper is stored in a non-collating stacker 11 when the collator is not in use. This gate consists of branch claws like this 10
is an electromagnetic solenoid (not shown), which is linked to the mode setting operation.

Therefore, the conveyor belt 2 has a pair of upper and lower pulleys 1.
An appropriate number of rollers 2 and 12' (three shown in the figure) are stretched, and an inlet roller 12'' that receives the paper from the inlet guide 9 is placed in pressure contact with the conveyor belt 2. The entrance roller 12'' is driven from the upper pulley 12 via the universal joint 13. This universal joint 13 is for opening and closing the conveyance section, which will be described later.

The paper from this entrance roller 12'' reaches the conveyor belt 2, but it is necessary to bring the paper into close contact with this belt and apply a conveying force.For this purpose, a sandwiching belt 5 is pressed against the conveyor belt 2. .

This clamping belt 5 has its proximal end fixed to a pulley 6 which is pivoted on the inlet end of the conveyor belt 2, and its tip end is attached to the distributor 3.

Therefore, the paper conveyance path 4 reaches the distributor 3 formed between the conveyor belt 2 and the nipping belt 5.

The distributor 3 is composed of a finger claw 14 for stripping the paper from the conveyance path 4 and a paper discharge roller 15.
It is supported by a stem 16 of the machine frame so as to be movable up and down along the tray row 1.

Therefore, the clamping belt 5 is preferably a flexible sheet made of a material with a small coefficient of friction with the paper, and is preferably a synthetic resin sheet such as Mylar or Teflon, and is installed at a position where it comes into pressure contact with the plurality of conveyor belts 2. There is.

Along with this, a spring member 7 consisting of a constant load leaf spring is fixed to the pulley 6 at its base end, and the other end is attached to the distributor 3. This spring member 7 is formed so as to have a tendency to wind around the pulley 6, so that the distributor 3 is always biased upward in FIG.

17 is an adjuster spring provided at the fixed end of the clamping belt 5, and 18 is a pressing roller.

The one shown has a winding pulley 6 and a distributor 3.
Although it is provided on the fixed machine frame side separate from the fixing machine frame, it may be provided on the distributor 3 on the contrary.

Therefore, the winding drum 19 that pulls down the distributor 3, which is always biased upward, to a predetermined tray row 1 is connected to the pulley 6.
A wire 20 fixed to the winding drum 19 is attached to the distributor 3.

Therefore, if the winding drum 19 is intermittently rotated in the winding direction, the distributor 3 will step down, and if the amount of descent is equal to the interval between the tray rows, the distributor 3 will step forward to a predetermined tray position. It happens. At this time, the spring member 7 and the clamping belt 5 are stretched contrary to their spring properties, but the spring member 7, which has a clamping habit, always keeps the clamping belt 5 under tension, and the conveyor belt 2 Enables reliable paper conveyance between

Next, when the winding drum 19 is released so as to be rotatable in the loosening direction, the distributor 3 returns to the upper side of the device due to the winding behavior of the spring member 7. At this time, the spring member 7 integrally pinches and winds up the sandwiching belt 5.
The spring member 7 and the clamping belt 5 are wound and stored in the same state.

To explain the drive system of the winding drum 19, the power of the drive motor 21 is applied to the pulley 1 of the conveyor belt 2.
2' via a universal joint 22 and to the winding drum 19 via a clutch and lock mechanism 23.

When a paper jam occurs in the paper conveyance path 4 between the conveyance belt 2 and the winding belt 5, it is necessary to open the conveyance path 4 to remove it, but only the conveyance belt 2 and its carrier are shown. It is designed so that it can be opened and closed.

For this purpose, the machine frame 24 of the conveyor belt 2 is hinged to the side frame of the apparatus, and the universal joint 13 of the aforementioned inlet roller 12 and the universal joint 22 of the pulley 12' of the conveyor belt 2 are connected to this rotation axis. It has been placed.

Therefore, when the paper is jammed in the paper conveyance path 4, the carrier of the conveyor belt 2 can be rotated around the hinge part and the universal joint 1, which has the same axis as the conveyor belt 2, can be rotated.
3 and 22 are bent and the pulley 12 of the conveyor belt 2,
It can be opened regardless of the power input/output transmission mechanism to 12', and the minimum necessary portion is opened and closed.

The present invention is composed of the above-mentioned configuration, and is a pulley 6
A spring member 7 having one end fixed to the
The distributor 3 is suspended by the pulley 6, and the base end of the clamping belt 5 which forms the paper transport path 4 between the distributor 3 and the transport belt 2 is fixed to this pulley 6. Therefore, the amount of expansion and contraction of the spring member 7 and the clamping belt 5 which expand and contract as the distributor 3 reciprocates along the tray row 1 is unlikely to differ from each other, preventing paper not being transported when the clamping belt 5 becomes loose and preventing collating errors when the amount of expansion and contraction of the spring member 7 becomes incorrect, and the device can be made small and inexpensive.

In particular, if the spring member 7 and the clamping belt 5 are superimposed and wound around the pulley 6 as in the illustrated embodiment, the winding state of both pulleys 6 will be exactly the same, and the amount of expansion and contraction will be the same. They are not different from each other.

As described above, the present invention has an extremely simple structure that can eliminate the fear of misalignment in the amount of expansion and contraction when the suspension member (spring member of the present invention) of the conventional distributor 3 and the clamping belt are wound around separate pulleys. There is.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the main part thereof, and FIG. 2 is a longitudinal cross-sectional view of the main part thereof. 1... Tray row, 2... Conveyor belt, 3... Distributor, 4... Paper conveyance path, 5... Sandwiching belt, 6... Pulley.

Claims (1)

[Scope of utility model registration request] A distributor 3 is installed between the conveyor belt 2 installed along the inlet side of the tray rows 1 arranged in several rows as appropriate, and the tray rows 1.
is supported in a reciprocating manner and has one end attached to the distributor 3 to form a paper conveyance path 4 with the conveyor belt 2, and the distributor 3 is moved to sequentially convey the sheets. In the collator to be delivered, a pulley 6 is attached to either the paper inlet end or the distributor 3, one end is fixed to the pulley 6, and a spring member 7 having a winding habit is used to connect the distributor 3 to the conveyor belt. The collator is characterized in that the pinching belt 5 is pulled from the paper entrance end of the paper sheet 2, and the pinching belt 5 is wound around the pulley 6 by the winding behavior of the spring member 7.