JP3309007B2 - Plate discharging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing machine and the like, which relates to a stencil printing machine which compresses and discards used stencil paper.

[0002]

2. Description of the Related Art A rotary stencil printing apparatus having a cylindrical plate cylinder is known. In such a stencil printing apparatus, an ink supply means is generally provided inside the plate cylinder, and a stencil sheet can be wound around the outer peripheral surface of the ink-permeable peripheral wall. Then, printing is performed by rotating the plate cylinder and transporting the printing paper between the press roller and the press roller.

In order to discard the used stencil sheet after printing, the above-mentioned conventional stencil printing apparatus is generally provided with a stencil discharging means including a peeling claw, a take-up roller and a stencil discharging box near the plate cylinder. Had been. That is, the end of the stencil sheet is peeled off from the surface of the rotating plate cylinder by a peeling claw, and is further pushed directly into the plate discharge box to be discarded.

[0004]

According to the conventional stencil discharging means, the stencil paper is pushed into the stencil box by a take-up roller for peeling off the stencil paper from the plate cylinder. There was a problem of being weak. When the stencil sheet is almost full in the stencil box, the stencil sheet once discarded may be wound around the winding roller.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and increases the storage capacity in a stencil box. Even if the stencil discarded in the stencil box is almost full, the stencil sheet is discarded once in the stencil box. An object of the present invention is to provide a stencil discharging device in which a stencil sheet is not wound around a winding roller.

[0006]

According to a first aspect of the present invention, there is provided a stencil discharging device, comprising: conveying means for conveying a stencil sheet peeled from an outer peripheral surface of a plate cylinder by a peeling means to a waste accommodating section; An elastic plate that is fixedly provided at one end in a transport path between the sets, and that can be deformed in the transport direction of the stencil that compresses the stencil paper while preventing the transport of the stencil paper transported by the transport means. If, provided with pushing means for discarding the stencil sheet by deforming the elastic plate by extruding the stencil sheet from the conveying means side of the stencil sheet which has been compressed by the elastic plate to the waste storage portion It is characterized by:

[0007] A plate discharging device according to a second aspect of the present invention is a plate discharging device.
Discard the stencil paper stripped from the outer peripheral surface of the plate cylinder by the step
Transport means for transporting the paper to the storage section;
One end is rotatably supported in the transport path between the
It is urged to the conveying means side, and is
The stencil sheet that has been conveyed is prevented from being conveyed and the stencil sheet is
A rigid plate that can be opened and closed in the conveying direction of the base paper to be compressed;
From the conveying means side of the stencil sheet compressed by the body plate
The rigid plate is opened by extruding the stencil paper
An extruder for discarding the stencil sheet in the discard storage section
A step is provided .

According to a third aspect of the present invention, there is provided a stencil discharging device, wherein the stencil sheet peeled from the outer peripheral surface of the plate cylinder by the peeling means is transported to a detachable waste storage unit, and the stencil paper receiving port side of the waste storage unit. A compression member that can be opened and closed in a stencil conveyance direction for preventing conveyance of the stencil sheet conveyed by the conveyance means and compressing the stencil sheet, and the stencil sheet compressed by the compression member. An extruding means is provided for extruding the stencil sheet from the conveying means side to open the compression member to dispose the stencil sheet in the waste storage section.

[0009]

The stencil sheet peeled off from the peeling means is conveyed by the conveying means toward the waste storage section. Since the compression member is arranged in the middle of the conveyance path, the conveyance of the stencil paper is prevented and compressed. You. Thereafter, when the stencil paper is extruded from behind the compressed stencil paper by the extrusion means,
The compression member is in an open state, and allows the compressed stencil sheet to be discarded to the discard storage section. After the stencil paper is discarded to the waste storage unit, the compression member returns to the original position,
Since there is also a compression member between the transporting means and the waste storage unit, the stencil paper in the waste storage box is almost full, and the force of returning the stencil paper once discarded to the waste storage unit to the transport means side. Is prevented by the compressing member even if acts, so that it does not wrap around the conveying means.

Also, even if a compression member is provided in the stencil receiving section of the waste storage section, the stencil paper is similarly prevented from being discarded in the waste storage section and compressed. Thereafter, when the stencil sheet is extruded from the back of the stencil sheet by the pushing means, the compression member is opened, and the compressed stencil sheet is allowed to be discarded to the waste storage portion. Further, if the disposal storage section is configured to be detachable from the apparatus, the disposal storage section becomes full and can be removed from the apparatus. In this case, since the stencil sheet receiving portion of the waste storage section is already closed, the stencil paper does not spill out of the waste storage section into the apparatus, and the inside of the apparatus is not stained with ink.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a plate discharging device according to the present invention will be described.
FIG. 1 is a side view showing a plate discharging device. The rotationally driven plate cylinder 1 has an ink-permeable peripheral wall, and an ink supply unit is provided inside.
A stencil sheet is wound. A peeling claw 3 as a peeling means and a pair of winding rollers 4 are provided close to the outer peripheral surface of the plate cylinder 1.

The peeling claw 3 is driven by a solenoid 6, and its tip approaches the plate cylinder 1, peels off the end of the stencil sheet from the outer peripheral surface of the plate cylinder 1, and guides it to the winding roller 4. I have. The take-up roller 4 is configured to pinch and convey the stencil sheet and peel it off from the plate cylinder 1.

A rotating unit 7 of the plate discharging device is provided next to the winding roller 4. The rotating section 7 is configured such that a plurality of rotating members 9 are fixedly mounted on a common rotating shaft 10 at the same phase with an interval therebetween. The rotating member 9 has cantilevered arms 12 projecting from four sides of a substantially square base 11, respectively, and is formed in a substantially swastika shape. The rotating member 9 can accommodate a stencil sheet between the arm 12 and the base 11.

That is, each rotating member 9 is a storage section 13 of the stencil sheet from which the inside of each arm 12 is peeled off, and this storage section 13 is opened to the delay side in the rotation direction, and the winding roller 4 is configured to receive the stencil sheet conveyed from No. 4. The rotating shaft 10 is connected to rotating means such as a motor (not shown).
Is rotated at a predetermined timing with the open side of the storage unit 13 being rearward.

Next to the rotating section 7, a plate discharge box (disposal storage section) 17 shown in a perspective view of FIG. 2 is detachably provided on a mounting table 17a. The plate discharging box 17 used in this plate discharging device has an opening 18 for receiving the plate, and a lid (compression member) 19 which can be opened and closed is provided above the opening.

When the stencil discharge box 17 is made of paper, the cover 19 can be formed by cutting a part of the cover and bending it. Is released,
What is necessary is just to have elasticity enough to return to the original bending position. Further, the lid 19 may be formed of an elastic body such as a thin resin plate.

The rotating section 7 is provided with a lower discharging guide 20 and an upper discharging guide 21 between the rotating member 9 and the lid 19 of the discharging box 17. The plate discharging lower guide 20
It is provided facing horizontally, and the end 20 a
Is provided at a predetermined angle in the angle direction of. As a result, the stencil lower guide 20 guides the stencil sheet accommodated in the accommodating portion 13 of the rotating member 9 toward the stencil ejection box 17. Also, the upper plate discharging guide 21 is provided at a predetermined angle in the direction of inclination of the lid 19, and the stencil sheet of the accommodating portion 13 is covered with the lid 19.
Compress in the direction.

The lower plate discharging guide 20 and the upper plate discharging guide 21 are provided on the front surface of the plate discharging box 17, but are located in the gaps between the rotating members 9 so as not to contact the rotating members 9. I have. That is, the rotating member 9, the lower plate discharging guide 20, and the upper plate discharging guide 21 are nested and do not interfere with each other.

An extruding piece 22a of the extruding means 22 is freely protrudable between the upper plate discharging guide 21 and the lid 19.
The pushing piece 22a is formed in a predetermined arc shape centered on the shaft 22b, and is actuated by driving means such as a motor (not shown). As a result, the pushing means 22 pushes the stencil sheet compressed between the upper guide 21 and the cover 19 toward the inside of the stencil box 17. Also, the extruded piece 22a
Abuts on the lid 19 to rotate the lid 19 into the plate discharging box 17.

Next, the plate discharging operation according to the above configuration will be described with reference to the operation diagrams of FIGS. When the stencil sheet P wound around the plate cylinder 1 becomes used, the stencil sheet P is subjected to a plate discharging process. For this reason, the clamped state of the stencil sheet P by the clamping means (not shown) provided on the outer peripheral surface of the plate cylinder 1 is released, and thereafter, as shown in FIG. When 1 rotates, the stencil sheet P on the outer peripheral surface of the plate cylinder 1 is peeled off. Then, as shown in FIG.
The storage unit 1 of the rotating member 9 is rotated by the rotation of the take-up roller 4.
3 and stored.

Next, as shown in FIG. 5, when the rotating member 9 rotates, the stencil sheet P accommodated in the accommodating portion 13 is guided by the lower plate discharging guide 20 and the upper plate discharging guide 21 to move in the direction of the plate discharging box 17. Moving. Subsequently, as shown in FIG. 6, the stencil sheet P is about to be sent to the stencil discharge box 17 side. However, the conveyance is prevented by the lid 19 and the stencil sheet P is packed between the stencil lower guide 20 and the lid 19. It is further compressed.

Next, as shown in FIG. 7, the extruding means 22 is operated, and the stencil sheet P is extruded toward the stencil discharge box 17 while being further compressed by the extruding pieces 22a. At this time,
Since the lid is pushed into the stencil box 17 together with the stencil sheet P, the stencil sheet P is completely discarded in the stencil box 17 as shown in FIG.

When the pushing by the pushing means 22 is released, the lid 19 returns to its original position as shown in FIG.
That is, it returns to the position where the movement of the stencil sheet P conveyed from the rotating member 9 is prevented. The operation of the pushing means 22 may be performed not only once, but also twice, three times, or plural times.

After the stencil sheet P has been discarded in the stencil discharge box 17, the cover 19 returns to its original position. Therefore, the cover 19 is provided between the rotating member 9 and the stencil discharge box 17. Stencil paper P in the stencil discharge box 17
Is almost full, and the stencil sheet P once discarded to the stencil discharge box 17 is blocked by the lid 19 even if a force acts to return the stencil sheet P to the rotating member 9 side.
It does not wrap around.

The stencil sheet P discarded in the stencil discharge box 17 is placed on the mounting table 17.
By taking out from above a and opening the receiving port 18, it can be dumped outside. At this time, even when the stencil discharge box 17 is turned upside down and the receiving port 18 faces downward, the cover 19 has elasticity. Therefore, the stencil sheet P inside falls off carelessly, and the inside of the apparatus is stained with ink. Nothing.

Next, FIG. 10 is a side view showing a second embodiment of the plate discharging device of the present invention. In the second embodiment, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, the stencil sheet P peeled off from the plate cylinder 1 by the separation claw 3 is conveyed by the winding roller 4 to a plate discharge box 17 fixed to the apparatus. Accordingly, the arm 12, the lower plate discharging guide 20, and the upper plate discharging guide 21 are not provided. An elastic plate (compression member) 30 having one end fixed is provided in the middle of the base paper transport path between the take-up roller 4 and the plate discharge box 17. This elastic plate 30
Is formed of a rubber plate, a thin resin plate or the like, and compresses the stencil sheet P as shown in FIG.

Therefore, as shown in FIG.
The stencil sheet P compressed in step (1) is extruded from the take-up roller 4 by the pushing means 22. At this time, the elastic plate 30 is deformed, and the stencil sheet P is discarded in the stencil discharge box 17.
When the pushing by the pushing means 22 is released, the elastic plate 30 returns to the original position.

FIG. 12 is a side view showing a third embodiment of the present invention, which is a modification of the second embodiment. In this embodiment, instead of the elastic plate 30, a rigid plate (compression means) 35 whose one end 35a is rotatably supported is provided.
The rigid body 35 may be configured so that a predetermined urging force is applied by a spring 36 in a direction in which the rigid body 35 closes the opening. As a result, the stencil sheet P is compressed by the rigid plate 35 by the conveying force of the winding roller 4, and is discarded in the stencil discharge box 17 by the pushing means 22.

[0029]

According to the first aspect of the present invention, a compression member is provided between the conveyance means and the waste storage section in the conveyance path of the used stencil sheet, and the stencil sheet is conveyed by the compression member. , And the compression member is opened by the pushing means to be discarded in the waste accommodating portion, so that the stencil sheet once discarded can be prevented from returning from the waste accommodating portion. Thus, an accident such as the discarded stencil paper being wound around the take-up roller does not occur.

According to the fourth aspect of the present invention, the compression member is provided in the waste accommodating portion, so that the configuration can be simplified. Further, when the waste accommodating portion is full, the waste accommodating portion is detached from the device and is disposed at the dumping position. Can be transported. Further, in this case, since the stencil receiving portion of the waste accommodating section is in a closed state, the stencil paper is not spilled from the waste accommodating section into the apparatus and the inside of the apparatus is not stained with ink.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a plate discharging device of the present invention.

FIG. 2 is a perspective view showing a plate discharging box of the embodiment.

FIG. 3 is an operation diagram of the apparatus of the embodiment.

FIG. 4 is an operation diagram.

FIG. 5 is an operation diagram of the same.

FIG. 6 is an operation diagram.

FIG. 7 is an operation diagram.

FIG. 8 is an operation diagram.

FIG. 9 is an operation diagram.

FIG. 10 is a side view showing a second embodiment of the present invention.

FIG. 11 is an operation diagram of the embodiment.

FIG. 12 is a side view showing a third embodiment of the present invention.

FIG. 13 is an operation diagram of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... plate cylinder, 3 ... peeling claw, 4 ... take-up roller, 7 ... rotating part, 9 ... rotating member, 12 ... arm, 13 ... accommodation part, 17
... plate discharging box, 19 ... lid, 20 ... plate discharging lower guide, 2
1 ... Plate ejection guide, 22 ... Extruding means, 22a ... Extruded piece,
30 ... elastic plate, 35 ... rigid plate, 36 ... spring.

Claims (3)

(57) [Claims] 1. A conveying means for conveying a stencil sheet peeled from an outer peripheral surface of a plate cylinder by a peeling means to a waste accommodating section, and one end in a conveying path between the conveying means and the waste accommodating section.
An elastic plate, which is fixedly provided and is deformable in a stencil conveyance direction for preventing conveyance of the stencil sheet conveyed by the conveyance means and compressing the stencil sheet, and the stencil sheet compressed by the elastic plate The elastic plate by extruding the stencil sheet from
A plate discharging device provided with an extruding means for deforming and discarding the stencil sheet in the discarding storage section. 2. The peeling means peels off from the outer peripheral surface of the plate cylinder.
Transport means for transporting the stencil sheet to the waste storage section , one end of which is provided in a transport path between the transport means and the waste storage section.
It is rotatably supported and is always urged toward the conveying means.
Transport of the stencil sheet conveyed by the conveying means.
The stencil sheet is opened in the direction
A rigid plate which can be closed, and the conveying means for the stencil sheet compressed by the rigid plate;
By extruding the stencil paper from the side, the rigid plate is
Discard the stencil sheet in the waste storage section in the open state
A plate discharging device provided with a pushing means. 3. Peeling off from the outer peripheral surface of the plate cylinder by a peeling means.
That transports stencil paper to a removable waste storage unit
A step and a stencil sheet receiving port side of the waste storage section,
Prevent the transfer of the stencil paper conveyed by the conveyance means
Compression that can be opened and closed in the direction of transport of the stencil paper to compress the stencil paper
Member and the transporter of the stencil sheet compressed by the compression member
By extruding the stencil paper from the step side, the compression unit
With the material open, discard the stencil sheet into the waste storage section
Plate discharging device provided with an extruding means for performing the pressing.