JPH08230144A - Automatic sheet feeder for rotary press - Google Patents

Abstract

PURPOSE: To smoothly feed a sheet to a free roller provided at the sheet passage route of a rotary press. CONSTITUTION: A sheet feeding roller 11 having a driving motor 12 is-mounted at a free roller 3 provided at the sheet passage route of a rotary press via an attaching and detaching mechanism in parallel with the axial center of the roller, the roller 11 is rotated and stopped by the motor 12, and the roller 11 is attached to or detached from the roller 3 via the mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic paper feeder for a rotary press.

[0002]

2. Description of the Related Art In a rotary press, prior to a printing operation, it is necessary to introduce a winding paper from a paper feed unit along a paper passing path to a cutting / folding device of a folding unit via a printing unit. A large number of rotatable free rollers for guiding the running paper to the folding portion are provided in the paper passing path.

Conventionally, this paper threading work has been carried out by hand, or an automatic paper threading device using a paper threading belt up to the drag roller at the entrance of the triangular plate of the folder. Therefore, not only in the former case, but also in the latter case, the paper threading work from the drag roller to the cutting / folding device at the folding portion requires manual labor. However, in a folding machine such as a swivel type triangular plate, in which the drag roller connected to the main drive system of the rotary press is not installed at the entrance of the triangular plate, the free roller 3 is placed on the upper edge of the triangular plate 2 as shown in FIG. It is rotatably attached.

Conventionally, when the paper 1 is passed through the triangular plate 2 of the folding machine configured as described above, it is necessary for two workers to cooperate with each other. While pulling the leading edge of the paper 1 so that it does not sag, it guides it to the free roller 3 at the entrance of the triangular plate, and hands it to another worker in front of the triangular plate. The worker slides the received paper 1 along the surface of the triangular plate 2 while pulling the front end of the paper so as not to loosen it, and inserts it between the two forming rollers 4 and 4 for forming a vertical fold. It was

Further, in a folding machine of a type in which two triangular plates arranged in parallel are used and a sheet vertically folded in two by each triangular plate is put in a set of a cutting / folding device to perform folding, FIG.
As shown in FIG. 3, nipping rollers 5, 5 for pulling the paper from the forming rollers 4, 4 at the lower ends of the triangular plates 2a, 2b are provided with a free roller 6 for guiding the vertically folded papers 1a, 1b. There is.

Conventionally, when the paper is passed through the folding machine constructed as described above, an operator on the lower surface of the folding machine loosens the vertically folded papers 1a and 1b coming down from the forming rollers 4 and 4. The paper was pulled between the nipping rollers 5 and 5 while pulling the tip of the paper so that it would not exist.

[0007]

The conventional rotary press as described above has the following problems when the paper is passed from the entrance of the triangular plate of the folding machine to the cutting / folding device. (B) In a folding machine with a free roller installed at the entrance of the triangular plate, the free roller does not have a function of holding and feeding the paper, so the worker pulls the tip of the paper to guide it onto the triangular plate, and the surface of the triangular plate. It is necessary to lower the paper along with the paper and to guide the paper that is vertically folded from the lower end of the triangular plate into the cutting and folding device, which is a work of cooperation by two people and work efficiency is not good. (B) In a folding machine that uses two triangular plates that are arranged side by side to make a fold, the operator pulls the leading edge of the paper so as not to loosen the vertically folded paper that passes through the triangular plates and descends from the forming roller. Although it has to be guided into a rotating nipping roller, this work in a narrow space is not preferable for safety. (C) In both the above (a) and (b), even if the worker pulls the tip of the paper during the paper threading work, the paper becomes loose due to its own weight. When the slackened paper enters the cutting / folding device, wrinkles may occur, paper jam may occur, a large amount of waste paper may be generated, and wasteful time may be wasted.

Therefore, the present invention is intended to solve these problems and to provide a paper feeding device which can reduce the number of manpower and can easily pass the paper.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a rotatable free roller provided in a paper passage of a rotary press is provided with a paper feed roller equipped with a drive motor, and a shaft center of the free roller via an attachment / detachment mechanism. The paper feed roller is mounted in parallel with and is rotated / stopped by the drive motor, and the paper feed roller is attached / detached to / from the surface of the free roller via the attachment / detachment mechanism.

[0010]

According to the present invention, since the above-mentioned means is taken, when the paper threading signal is received from the control device of the rotary press, the attachment / detachment mechanism of the paper feed roller is actuated in the "landing" direction to free the paper feed roller. At the same time as the roller is pressed against the surface of the roller, the drive motor attached to the paper feed roller is activated to rotate the paper feed roller in the direction of feeding the paper at a peripheral speed slightly higher than the paper threading speed of the rotary press. Then, since the free roller is pressed against the paper feed roller, the free roller rotates together with the paper feed roller in the direction of feeding the running paper. Therefore, when the leading edge of the paper sent from the paper feed section toward the folding machine is passed between the rotating free roller and the paper feed roller, the paper sandwiched between these two rollers is automatically The paper is sent downstream while being pulled.

When a signal of completion of paper threading is received from the control device, the drive motor of the paper feed roller is stopped and the attaching / detaching mechanism of the paper feed roller is actuated in the "remove" direction to separate the paper feed roller from the free roller. Will be in the “out” state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS. In FIGS. 1 and 2, 1 is a paper fed from a paper feeding unit, 2 is a triangular plate of a folding machine, 3 is a free roller provided at the entrance of the triangular plate 2, and 4 is a paper sliding down on the surface of the triangular plate 2. The forming roller is formed in a vertically folded state.

Reference numeral 10 denotes a paper feeding device applied to this embodiment,
As shown in FIG. 5, the paper feeding device 10 includes a fixed arm 15 fastened to a support shaft 16, an air cylinder 13 pinned to the tip of the fixed arm 15, and a rod of the air cylinder 13 pinned. An L-shaped movable arm 14 whose base is rotatably attached to the support shaft 16, and an adjustment shaft that adjustably connects the movable arm 14 and the fixed arm 15 and has an adjustment handle 18 at the tip. The paper feed roller 11 and its drive motor 12 are attached to the central portion of the movable arm 14 of the paper feed device 10.

In the paper feeding device constructed as described above,
When the web threading signal from the rotary press is received, the air cylinder 13 of the attachment / detachment mechanism moves the paper feed roller 1
The paper feed roller 11 is pressed against the surface of the free roller 3 by operating 1 in the "wearing" direction. Paper feed roller 1 at the same time
The drive motor 12 attached to the No. 1 is activated to rotate the paper feed roller 11 in the direction of feeding the paper 1 at a peripheral speed slightly higher than the paper passing speed of the rotary press. Then, this paper feed roller 1
The free roller 3 pressed against the sheet 1 also rotates in the direction in which the sheet 1 is sent out. Therefore, when the front end of the paper 1 sent from the paper feed unit is passed between the rotating free roller 3 and the paper feed roller 11, the running paper sandwiched between the two rollers is pulled and the paper is also pulled. The tip of 1 is automatically sent to the surface of the triangular plate 2. The pulling condition of the paper 1 can be performed by rotating the adjusting handle 18 to move the adjusting shaft 17 in the axial direction and adjusting the nip pressure between the two rollers.

The paper feed roller 11 automatically sends the paper 1 to the surface of the triangular plate 2, and the worker receives the leading edge of the paper 1 that slides down along the inclination of the triangular plate and vertically folds it in half at the center. Then, the paper is threaded between the two forming rollers 4 and 4, and is then guided to the cutting / folding device to complete the paper threading operation. At the signal of completion of paper threading, the drive motor 12 of the paper feeding roller is stopped and
As shown by the alternate long and short dash line, the air cylinder 1 of the attachment / detachment mechanism
3 is operated to separate the paper feed roller 11 from the free roller 3 to be in the "released" state.

In the paper feeding device of the present embodiment, the paper fed from the paper feeding portion is automatically fed onto the triangular plate, so that the worker receives the paper coming down from the triangular plate, and the forming roller and the cutting / folding device. It will be one person's work just to lead to, and work efficiency will be greatly improved. Second of the present invention
An example is shown in FIGS. 3 and 4.

In FIGS. 3 and 4, 2a and 2b are triangular plates of a folding machine, and 5 is a sheet of paper 1a and 1b that is vertically folded in half through a forming roller 4 while sliding down on the surfaces of the triangular plates 2a and 2b. A nipping roller 6 pulled into the folding device is a free roller provided between the forming roller 4 and the nipping roller 5. Reference numeral 20 denotes a paper feeding device applied to this embodiment. The paper feeding device 20 includes two triangular plates 2a and 2b arranged in parallel as shown in FIGS.
It is applied to a folder of a type in which a free roller 6 is rotatably provided between the forming rollers 4 and 4 and the nipping rollers 5 and 5 at the tip of the free roller 6
Then, one set of the paper feed roller 21 directly connected to the drive motor 22 is attached to the support rod 26 through the attachment / detachment mechanism in parallel with the axis of the free roller 6.

The attachment / detachment mechanism of the apparatus 20 and the structure of the paper feed roller 21 are the same as those in the first embodiment. The paper feeding device 2 of the second embodiment configured as described above
0 receives a web threading signal from the rotary press, the air cylinder 23 of the attachment / detachment mechanism operates to move the paper feed roller 21 in the "landing" direction as shown by the solid line in FIG. Is pressed against the surface of the free roller 6. At the same time, the drive motor 22 attached to the paper feed roller 21 is activated to rotate the paper feed roller 21 in the direction of feeding the paper at a peripheral speed slightly higher than the paper passing speed of the rotary press. Then, the free roller 6 is also rotated by the paper feed roller 21,
The running papers 1a and 1b are rotated in the feeding direction. Therefore, when the front ends of the papers 1a and 1b that are vertically folded from the forming rollers 4 and 4 and come down in two rows are passed between the free roller 6 and the paper feed roller 21, the two rollers are inserted. The sandwiched papers 1a and 1b are pulled and fed toward the nipping roller 5. The adjustment of the pulling condition of the papers 1a and 1b is the same as in the case of the above-described first embodiment.

An operator receives the leading ends of the papers 1a and 1b automatically fed by the paper feed roller 21,
The paper threading operation is completed when the paper is threaded between the two nipping rollers 5 and 5, and then guided to the cutting / folding device. In response to the completion signal of the paper feed, the drive motor 22 of the paper feed roller is stopped, and the air cylinder 23 of the attachment / detachment mechanism is operated as shown by the one-dot chain line in FIG. "State.

In the paper feeding device of the present embodiment, the vertically folded paper coming down from the forming roller in two rows is
Since it is automatically fed to the nipping roller while pulling it between the free roller and the paper feed roller, it is necessary for the worker to pull through the tip in a narrow space while pulling the tip so that the paper does not loosen during the paper passing operation. Without it, the paper can be safely and easily introduced into the cutting / folding device. For this reason, wrinkles and paper jams are eliminated, which also contributes to reduction of waste paper.

[0021]

As described above, according to the present invention, the paper feed roller having the drive motor is attached to the free roller provided in the paper passage of the rotary press in parallel with the axis of the free roller through the attaching / detaching mechanism. Since the paper feed roller is rotated / stopped by the drive motor and is attached / detached to / from the surface of the free roller via the attachment / detachment mechanism, the paper feed roller is rotated / stopped and attached / detached to / from the free roller. The paper sent from the paper feed unit is automatically sent out, and the paper threading work in the folding machine can be done by one person, safely and easily, and the paper sent from the paper feed unit is between the free roller and the paper feed roller. Since the paper is pulled and pulled at a speed slightly higher than the peripheral speed of the rotary press, the paper does not loosen due to its own weight during the paper threading work, and the paper is smooth to the cutting / folding device. It can be put to. For this reason, wrinkles and paper jams at the time of start-up are eliminated, and there is an effect that it contributes to reduction of waste paper.

[Brief description of drawings]

FIG. 1 is a layout view of a folding machine provided with a paper feeding device according to a first embodiment of the invention.

FIG. 2 is a side view seen from A in FIG.

FIG. 3 is a layout view of a folding machine provided with a paper feeding device according to a second embodiment of the invention.

FIG. 4 is a side view of FIG. 3 viewed from A.

FIG. 5 is an explanatory diagram of a paper feeding device of the present invention.

FIG. 6 is a layout view of a folding machine having a conventional turning triangular plate.

FIG. 7 is a layout view of a conventional folding machine having two triangular plates.

[Explanation of symbols]

 1 Paper 2, 2b, 2c Triangular Plate 3 Free Roller at Triangle Plate Entrance 6 Free Roller 10, 20 Paper Feeding Device 11, 21 Paper Feeding Roller 12, 22 Drive Motor 13, 23 Air Cylinder 14, 24 Movable Arm 15, 25 Fixed Arm

Claims (1)

[Claims] 1. A paper feed roller equipped with a drive motor is attached to a free roller provided in a paper passage of a rotary press in parallel with an axis of the free roller through an attaching / detaching mechanism, and the paper feed is performed by the drive motor. An automatic paper feeding device for a rotary press, comprising rotating and stopping a roller and attaching / detaching the paper feeding roller to / from the surface of the free roller via the attaching / detaching mechanism.