JPH0355384B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a device for disposing of used stencil paper in a stencil printing machine, and particularly to a device for squeezing and disposing of used stencil paper. It depends.

[Prior Art] After use, the stencil paper wrapped around the plate cylinder of a rotary stencil printing device is peeled off in a tangential direction from the periphery of the plate cylinder along with the rotating circle of the plate cylinder, and the peeled stencil paper is The base paper is folded into a waveform by feeding it with a pinching roller in the peeling direction and blocking the front side of the paper with a barrier, first reducing the length of the base paper in the vertical direction, and then folding the base paper into this waveform. An original plate waste processing device that conveys the plate cylinder in a direction perpendicular to the direction in which the plate cylinder is pulled out using a pair of rollers, compresses it flat, and discharges it is disclosed in Japanese Patent Application Laid-Open No. 1983-1999 filed by the same applicant as the present applicant. It is disclosed in Publication No. 113490.

[Problems to be Solved by the Invention] According to the original plate waste processing device described above, the stencil paper, which generally has a rectangular shape and is wrapped around the printing cylinder in a direction in which its long side follows the periphery of the printing cylinder, is By bending the long side into a corrugated shape in the direction of reduction and squeezing it flat, it becomes a rectangular band-shaped waste with the short side as the long side and is discharged from the original waste disposal equipment. This waste still has a length corresponding to the length of the short side of the original base paper.

An object of the present invention is to compress the waste strip so as to further reduce the length of the waste strip, thereby further reducing the volume of the used master plate discharged from the printing machine.

[Means for Solving the Problems] According to the present invention, this problem is solved by: two rollers facing each other and at least one of which is driven by power so as to sandwich a used original; and a sandwich between the two rollers. A wedge-shaped space tapering in the direction of the feeding movement on the downstream side of the feeding movement of the section, which dams the originals fed by the two rollers, and which dams the originals fed by the rollers as the amount increases. two wall members facing each other forming a wedge-shaped space in which the accumulated originals are compressed by the driving force of the roller;
This is achieved by an original plate disposal device for a printing press, characterized in that one of the wall members is movably configured to open and close the tapered end of the wedge-shaped space.

[Operations and Effects of the Invention] According to the above configuration, a roller that sends a used original plate for discharge is used, and by combining this with a wall member that forms a wedge-shaped space on the downstream side, the roller can be moved. It is possible to further compress the discharged plate into a wave-shaped folded state in the feeding direction by using the feeding force, and to reduce the volume of the original plate to be discarded without providing a separate compressing means for compressing the discharged plate. I can do it.

[Example] The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a plate discarding device including an original plate discarding device for a printing press according to the present invention. In these figures, numeral 1 indicates a stencil paper storage box, which has a stencil paper intake port 2 on the front and a stencil paper discharge port 3 on one side.

A drive shaft 5 carrying a plurality of gears 4 and a rubber roller 6 are provided in the stencil paper intake port 2 of the stencil paper storage box 1, each parallel to the axis of a printing cylinder (not shown). 6 are engaged with each other, and the used stencil sheet S is removed from the plate cylinder by the drive shaft 5 being rotationally driven in the counterclockwise direction in the figure by an electric motor (not shown). It is designed to be carried into a stencil paper storage box 1.

The device for removing the stencil paper attached to the printing cylinder from the printing cylinder and transporting it into the stencil paper storage box 1 was developed by the same applicant as the applicant of the present application.
No. 179595 (Utility patent application No. 17959-95868) and Utility patent application No. 1983-
This device has already been proposed in Japanese Utility Model Application No. 97030 (Kokai No. 58-3266), and if a more detailed explanation of this device is required, please refer to the specification and drawings of the above-mentioned application.

A pair of metal rollers 7 and a rubber roller 8 are provided in the stencil paper outlet 3 of the stencil paper storage box 1 in a direction perpendicular to the axis of the plate cylinder, and the metal rollers 7 and the rubber rollers 8 are not engaged with each other. At the same time, the stencil paper stored in the stencil paper storage box 1 is discharged to the outside of the stencil paper storage box 1.

A metal roller 7 is provided at the bottom of the stencil paper storage box 1.
A metal driven feed roller 10 is arranged parallel to the rubber roller 8 and spaced apart from each other by a small distance.
Each of the driven feed rollers 10 is rotatably provided around its axis by a shaft 11, and the peripheral portion of each of the driven feed rollers is inserted through an opening 12 provided in the bottom plate of the storage box 1 to accommodate the stencil paper. It is exposed inside Box 1.

A driving feed roller 14 is provided at the upper part (ceiling part) of the stencil paper storage box 1 so as to be rotatable around its axis by a shaft 13 parallel to the shaft 11. It is designed to be rotationally driven in the circumferential direction. Drive feed roller 14
It has a semi-cylindrical or semi-cylindrical shape with approximately half of its circumference removed, and the remaining surface of the circumference has elasticity like a sponge or foamed synthetic resin, and the coefficient of friction on the surface is low. It is composed of a highly elastic member 15. In the illustrated embodiment, the drive feed roller 14 is divided into two parts in the axial direction, and has a gap 16 at the center thereof in the axial direction. Two openings 17 are provided in the ceiling wall of the stencil paper storage box 1 to receive each of the divided drive feed rollers 14. A bridge 18 formed by the ceiling wall left between the two openings 17 is provided to prevent the stencil paper from wrapping around the circumferential surface of the drive feed roller 14. It's summery.

When the driving feed roller 14 is in a rotational position where its peripheral portion removal portion faces the driven feed roller 10, a gap is created in the stencil paper storage box 1 between the drive feed roller 14 and the driven feed roller 10 to receive the stencil paper. On the other hand, as shown in the figure, when the remaining peripheral portion, that is, the elastic member 15 is in the rotational position facing the driven feed roller 10, the elastic member 15 moves the driven feed roller 10
It is adapted to press into engagement with the

One end of a duct 21 defining a waste passage 20 extending downward from the stencil paper outlet 3 is connected in communication. The duct 21 receives the aforementioned metal roller 7 and rubber roller 8 at one end connected to the stencil paper outlet 3, and opens downward at the other end, that is, the lower end. A suitable box or bag is disposed opposite the lower end with its opening facing the waste passage 20, and these boxes or bags are used to collect used stencil paper discharged through the waste passage 20. It is now accepted for disposal.

In the middle of the waste passage 20, there is a metal roller 23 rotatably supported by the duct 21 by a shaft 22 and driven to rotate counterclockwise in the figure by an electric motor (not shown); Therefore, the duct 21 is provided with a rubber roller 25 rotatably supported, and these both engage with each other to forcibly convey the stencil paper in the waste passage 20 toward its lower end. ing. In the illustrated embodiment, the metal roller 23 is continuous in the axial direction of the shaft 22, whereas the rubber roller 25 is continuous in the axial direction of the shaft 22.
are provided separately in the direction of the shaft 24, and in the waste passage 20 there are rubber rollers 2 adjacent to each other.
A guide plate 26 is provided to prevent the stencil paper from entering between the stencils 5 and 5 and guide it to the engagement portion between the metal roller 23 and the rubber roller 25.

A fixed gate fixed to the duct 21 is located in the waste passage 20 located below the metal roller 23 and the rubber roller 25, that is, on the downstream side of the metal roller 23 and the rubber roller 25 when viewed in the conveying direction of the stencil paper in the waste passage 20. A plate 27 and a movable gate plate 29 whose one end is rotatably supported by the duct 21 via a shaft 28 are provided. The movable gate plate 29 is
As shown in the figure, it extends diagonally across the waste passage 20, joins the lower edge of the fixed gate plate 27 at its lower edge to close the waste passage 20, and is directly below the metal roller 23 and rubber roller 2. a closed position that defines a wedge-shaped, that is, a tapered funnel-shaped space 30; and a closed position that rotates clockwise in the figure about the shaft 23 from the closed position and moves away from the fixed gate plate 27 to open the waste passage 20. is rotatable between an open position in which it opens, that is, establishes communication with the waste passage 20;
The spring 31 always urges the valve toward the closed position.

Next, the operation of the apparatus constructed as described above will be explained.

The stencil sheet S that is removed from a printing cylinder (not shown) is held between a gear 4 and a rubber roller 6, and is held on a shaft 5.
As shown in the figure, the stencil sheet is carried into the stencil storage box 1 as it rotates counterclockwise. The stencil paper S carried into the stencil paper storage box 1 is prevented from moving by the wall surface of the storage box, and is folded into a waveform in the vertical direction and stored in the storage box 1. At this time, the drive feed roller 14 faces the driven feed roller 10 at its circumference removed portion, and creates a gap between itself and the driven feed roller 10 to receive the stencil paper S. 14 into the stencil storage box 1 without being hindered, and a part of it is carried into the stencil paper storage box 1 without being hindered by the driven feed roller 10 and the driving feed roller 1.
It is inserted between 4 and 4.

When all of the stencil sheets 7 are carried into the stencil sheet storage box 1, the driving feed roller 14 is rotated clockwise in the figure by an electric motor (not shown). As a result, as shown in the figure, the elastic member 15 of the drive feed roller 14 rotates while being pressed against the driven feed roller 10, and the stencil paper S between the driven feed roller 10 and the drive feed roller 14 is rotated.
are compressed and folded in the vertical direction in a superposed state, and are conveyed within the stencil paper storage box 1 toward the stencil paper discharge port 3 by frictional resistance with the elastic member 15. The stencil paper S, which has been compressed and folded in a polymerized state, becomes relatively hard due to the folding and polymerization, and the stencil paper S conveyed to the stencil paper transport port 3 is moved by the metal roller 7 and the rubber roller 8. As the metal roller 7 is sandwiched and rotates counterclockwise in the figure, the stencil paper discharge port 3 is moved to the waste passage 20.
is discharged to.

As described above, the stencil paper S, which has been folded vertically by the driving feed roller 14 and the driven feed roller 10 and is discharged from the stencil paper discharge port 3 to the waste passage 20 by the metal roller 7 and the rubber roller 8, is placed in the middle of the waste passage 20. The metal roller 23 and rubber roller 25 provided therein further transport the waste toward the lower end of the waste passage 20 . The stencil paper S has a metal roller 23
The stencil paper passes between the fixed gate plate 27 and the movable gate plate 29 while being conveyed by the fixed gate plate 27 and the rubber roller 25, but since the fixed gate plate 27 and the movable gate plate 29 cooperate with each other to close the waste passage 20, the stencil paper passes through the fixed gate plate 27 and the movable gate plate 29 and are prevented from moving further along the waste passage 20 toward its lower end, remaining in the space 30 and being continuously conveyed by the metal roller 23 and the rubber roller 25, thereby forming the space 3.
Pushed into 0. Since the space 30 is wedge-shaped, the stencil paper S that is forcibly fed into the space 30 becomes jammed in the middle of the waste path 20 and is pushed into the tapered side of the space 30. It is then compressed in the transverse direction and folded over itself with a relatively small folding width, resulting in a small, bulky product. The space 30 includes a metal roller 23, a rubber roller 25, a fixed gate plate 27, and a movable gate plate 29.
If more than a predetermined amount of stencil paper S accumulates in the space, the movable gate plate 2
Reference numeral 9 indicates that the stencil sheet 9 rotates clockwise in the figure around the shaft 28 against the spring force of the compression coil spring 31 and is pushed out, thereby removing the stencil sheet that had accumulated in the space 30. The raw paper S passes between the fixed gate plate 27 and the movable gate plate 29 and falls from the lower end of the waste passage 20 into a suitable box or bag (not shown). As described above, this stencil paper S is pressed and folded with a relatively small fold width, making it small and not bulky.
This prevents the box or bag from filling up prematurely.

FIG. 2 shows another embodiment of a plate discarding device including an original plate disposal device for a printing press according to the present invention. In FIG. 2, parts corresponding to those in FIG. 1 are designated by the same reference numerals as in FIG. In this embodiment, the movable gate plate 29 is driven to open and close by a solenoid device 32 instead of a compression coil spring. The solenoid device 32 drives the movable gate plate 29 to the open position when a predetermined amount or more of stencil paper has accumulated in the space 30.
At other times, the movable gate plate 29 is held in the closed position. The fact that more than a predetermined amount of stencil paper has accumulated in the space 30 can be detected from the number of used stencil sheets sent to the disposal path 20, that is, the number of discarded stencil sheets. It is sufficient that the movable gate plate 29 is driven to the open position for a predetermined period of time each time a predetermined number of stencil sheets have been discharged.

In this embodiment as well, the space 30 is wedge-shaped, and until a predetermined amount or more of stencil paper is accumulated in the space 30, the space 30 is downstream of the metal roller 23 and the rubber roller 25 when viewed from the direction in which the stencil paper is conveyed in the waste path 20. Since the middle of the waste passage 20 located to the side is blocked by the fixed gate plate 30 and the movable gate plate 29, the stencil paper fed into the wedge-shaped space 30 by the metal roller 23 and the rubber roller 25 is similar to the embodiment described above. It is pressed and folded into a relatively small folding width, making it small and not bulky. space 3
When more than a predetermined amount of stencil paper is accumulated in the space 30, the movable gate plate 29 is driven to the open position by the solenoid device 32, and the stencil paper accumulated in the space 30 is moved to the fixed gate. It passes between the plate 27 and the movable gate plate 29 and falls from the lower end of the waste passage 20 into a suitable box or bag (not shown) provided opposite the lower end.

The original plate waste disposal apparatus according to the present invention is applicable not only to stencil paper but also to sheet-like original plates such as offset printing original plates.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited to these, and various other embodiments are possible within the scope of the present invention. This will be clear to those skilled in the art.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of a plate discharge device including an original plate disposal device for a printing press according to the present invention;
FIG. 2 is a perspective view showing another embodiment of a plate discharge device including an original plate disposal device for a printing press according to the present invention. 1...Digital paper storage box, 2...Digital paper intake port, 3
...Memory paper discharge port, 4...Gear, 5...Shaft, 6...Rubber roller, 7...Metal roller, 8...Rubber roller, 10
...Followed feed roller, 11...shaft, 12...opening, 1
3... shaft, 14... drive feed roller, 15... elastic member, 16... gap, 17... opening, 18... brittle, 20... waste passage, 21... duct, 22... shaft,
23... Metal roller, 24... Shaft, 25... Rubber roller, 26... Guide plate, 27... Fixed gate plate, 28...
Shaft, 29...Movable gate plate, 30...Space, 31...Spring, 32...Solenoid device, S...Memplate paper.

Claims (1)

[Claims] 1. Two rollers facing each other and at least one of which is driven by power so as to sandwich a used original, and a wedge-shaped wedge tapering in the direction of the feeding movement on the downstream side of the feeding movement of the nipping part between the two rollers. A wedge-shaped space that dams the originals fed by the two rollers, and as the amount of the originals fed by the rollers increases, a squeezing action by the driving force of the rollers is applied to the dammed and accumulated originals. An original plate for a printing press, comprising two wall members facing each other forming a space, one of the wall members being configured to be movable so as to freely open and close the tapered end of the wedge-shaped space. Waste treatment equipment.