JPH0561107B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing base paper attached to a plate of a mimeographing machine.

Mimeograph paper is attached to a plate made of a cylindrical body with many small holes perforated in a metal plate, etc., wrapped around a cloth screen, etc., and ink is supplied from inside the plate and leached out from the plate-making perforations of the base paper. In so-called mimeograph machines, which print on paper fed between a printing plate and a press roller that presses it onto the printing plate, it is necessary to remove the printed base paper from the printing plate. This is the most troublesome work as it is easy to get your hands dirty with ink.

In recent years, this removal work has been automated, and mimeograph machines have become well-known that are equipped with a removal device that automatically strips the base paper from the plate and throws it into the waste box without having to touch the base paper directly. Publication No. 52-94222,
(Refer to Utility Model Application Publication No. 56-95868).

This device generally uses a claw-like member to lift the front edge of the base paper, guide it to a meshing section with vertically opposed feed gears, and feed it into the device by gripping it, but due to the structural arrangement, the plate Generally, the paper is fed with the surface on which the ink is completely adhered to facing downward.

However, after printing, the base paper is in the form of a thin film that has deteriorated in durability and is easily torn, so even if it is grasped by the feed gear and sent into the device, the surface of the thin film, which is completely coated with ink, will not be able to guide the device downward. Not only does it stick or tear when it comes into contact with the board, it does not reach the disposal box, but it also gets in the way of the paper that is fed later and gets stuck, causing a thin film to catch on the tips of the teeth of the feed gear and become tangled as it rotates. is likely to occur.

In other words, the ink adheres to the base paper, and when this adhered surface comes into surface contact with the flat part of the device guide plate, the sliding resistance of the contact part becomes extremely large.
The raw paper cannot slide on the device guide plate and cannot reach the waste box.

Therefore, the base paper becomes jammed in the middle of its conveyance path, which also obstructs the forward movement of the following base paper, making it difficult for the subsequent base paper to be sent out from the gear, and causing it to adhere to and become entangled in the gear. It turns out.

In order to remove this, the device (gear) must be rotated forward and backward repeatedly and carefully pulled out by hand, so a device that was designed to keep your hands clean will end up having the opposite effect.

This failure to feed the waste bin in a predictable manner also renders the device virtually ineffective.

Also, in the past, the removed base paper was wrapped in paper,
It used to be discarded each time, but once this device is installed, the removed base paper will be stored in the disposal box for the time being, and exam questions, management materials, etc. may be undesirable due to confidentiality leakage. .

In view of this problem, conventional mimeograph machines equipped with a paper removal device are equipped with a manual operation button, so that the paper removal device cannot be turned off after printing a confidential document. The base paper was peeled off from the plate by manual operation without being operated. Therefore, even though schools and companies that handle a large number of confidential documents are equipped with original paper removal equipment, they are rarely able to use this equipment, resulting in extremely low investment efficiency.

It is an object of the present invention to eliminate such drawbacks and provide a reliable base paper removal device.

The gist of the present invention is that a shredding cutter 50 is disposed in the path of the base paper 1 in an apparatus for removing base paper attached to a printing plate.

Note that the shredding cutter 50 refers to the entire shredding device including a rotary blade and its shaft, which will be described later.

The base paper introduced into the apparatus inlet 67 comes into contact with the overlapping part of the shredding cutter 50, and is conveyed into the apparatus by its rotation, and is continuously shredded at the same time.

In the present invention, as described above, since the base paper to be removed is sequentially shredded, the base paper is folded due to feeding, and
It does not form a dense and strong string in the direction perpendicular to the feeding direction, so the rotating parts will not get tangled and wrap around, and will not obstruct the path of the base paper that is fed later. The shredded base paper has appropriate undulations and twists, and unlike when it is fed flat, the surface on which a large amount of ink is deposited does not adhere to the guide plate or other parts of the device.

That is, according to the present invention, the base paper is appropriately undulated,
Since the base paper is shredded with a twist and sent onto the device guide plate, the ink-applied surface of the base paper does not come into contact with the device guide plate over its entire surface.
In addition, since the ink adhesion area of a piece of paper is small, the base paper does not come into surface contact with the device guide plate over a wide area as in the conventional example, so the base paper does not get jammed in the middle of its conveyance path. There is no interference with the advance of the subsequent base paper.

Therefore, the subsequent base paper will not adhere to the gear and become entangled.

Further, since the raw paper is sent out while being shredded by the shredding cutters 50 arranged in a row, the discharging force is very strong, and the conveyance and stuffing from the shredding cutters 50 to the waste box 61 can be performed reliably. Furthermore, since the base paper selvage 1-1, which has rigidity in the direction perpendicular to the feeding direction, is shredded, there is no fear that it may get caught in the width direction during transportation.

Furthermore, since the base paper is cut in a direction parallel to the feeding direction, the strong fibers are also cut in the same direction.
Not tangled.

Furthermore, since the base paper is always shredded, there is no need for manual operation, and the operator's fingertips are not stained with printing ink. Therefore, even in schools, companies, etc. that handle a large number of confidential documents, the original paper removal device can be operated with peace of mind, and investment efficiency can be increased.

Furthermore, since the base paper is also shredded, every corner of the waste box is fully packed, increasing storage efficiency.

Therefore, the device can be used with peace of mind because troubles with the device will not cause the hands to become dirty or troublesome to restore the device. In addition, the transportation within the device and the packing into the disposal box are extremely reliable.
Furthermore, since the removed base paper is shredded and discarded, it is convenient for security reasons, and all of the above-mentioned drawbacks can be overcome.

The present invention will be described with reference to a first embodiment shown in FIGS. 1 and 2. In the printing plate 2, a selvage paper 1 has a selvage hole 1-2 arranged in a row in the selvage portion 1-1 of the selvage paper. It is inserted into the stop pin 3 and fixedly wound.

The edge portion of the base paper edge portion 1-1 rests on pillows 4 appropriately arranged in the direction of the outer circumferential generatrix of the plate body 2 and is held slightly raised from the outer circumferential surface of the plate cylinder.

The paper 5 is passed through a paper clipping roller 6 and a synchronous roller 7-
1 and 7-2, is printed by press roller 8, and is discharged to the right in FIG.

The rotation of the electric motor 9 is appropriately decelerated and transmitted to the intermediate shaft 1.
0 is transmitted to the intermediate gear 11 loosely fitted.

The intermediate gear 11 is constantly meshed with the plate gear 12 and rotates the plate 2.

An intermediate gear 11, a clutch mechanism 13, and an intermediate shaft sprocket 14 are fitted on the axis of the intermediate shaft 10, and the clutch mechanism 13 is connected to the intermediate shaft 13 by electrical or mechanical means.
The rotation transmission from the intermediate gear 11 to the intermediate shaft sprocket 14 is interrupted.

Reference numeral 50 and subsequent parts to be explained next are portions of the base paper removing device.

A sprocket 53 is fixed to the upper blade shaft 52-1 of the shredding cutter 50, and an intermediate shaft sprocket 14
and are connected by a roller chain 15 to transmit rotation. Gears 54-1 and 54-2 are fixed to and mesh with the upper blade shaft 52-1 and the lower blade shaft 52-2, respectively.
The rotation of the upper blade shaft 52-1 is reversed and transmitted to the lower blade shaft.

50-1, 50-1... are the upper blades of the shredding cutter 50, and 50-2, 50-2... are the lower blades of the shredding cutter, which are aligned with the upper blade axis 52-1 and the lower blade axis 52-2, respectively. The gears 54-1 and 54 are fixedly arranged and alternately have minute gaps on the side surfaces at the outer periphery or form overlapping portions in a state of light contact.
-2, it is driven to move leftward in FIG. 2 at the overlapping portion.

55 is a peeling claw for the base paper; when the solenoid 56 is energized and pulled downward, the bell crank 57 rotates to the left, the connecting pin 58 moves to the right, and the peeling claw body 5
The peeling claws 55 arranged in a row at 9 are brought close to the plate.
Reference numerals 60-1 and 60-2 are guide plates for smoothing the feeding of the base paper 1 and for preventing the blades of the shredding cutter 50 from clogging, and the shredding cutter 50 is formed into a punched window that fits perfectly.

By the guide plates 60-1 and 60-2, the base paper 1
A passage is formed, and this passage communicates with a waste box 61, which will be described later. Therefore, the base paper 1 separated from the printing plate 2 is always shredded by the shredding cutter 50 and then sent to a disposal box 61, which will be described later, and is not taken out before being shredded.

Reference numeral 61 denotes a waste box for storing the removed base paper that has passed through the shredding cutter 50 and been shredded and discharged, and the side facing the shredding cutter 50 is open.

Since the present invention is configured as described above,
When removing the base paper 1 after printing, press the base paper removal command button (not shown), the plate 2 slowly rotates to the left as shown in FIG. , the upper blade shaft 52-1 rotates clockwise. Although the outer circumferential speed of the plate 2 and the circumferential speed of the overlapping part of the shredding cutter 50 are approximately similar,
For convenience of peeling the base paper 1 from the base paper 1, some deviation may be applied.

When the printing plate 2 comes to a predetermined position, this is sensed and the solenoid 56 is energized to absorb it.
Bell crank 57, connecting pin 58, peeling claw body 59
, the peeling claw 55 is moved to the right. The peeling claw 55 enters between the edges 1-1 of the base paper slightly raised from the outer periphery of the plate 2 by the pillow 4 into the space B, and removes the edge holes 1-2 of the base paper from the base paper fixing pins 3.

The base paper edge portion 1-1 rides on the upper surface of the peeling claw 55, reaches the engagement point of the shredding cutter 50, is bitten and moves to the left, and is sequentially shredded from the edge portion and discharged.

The peeling claw 55 has the base paper edge portion 1-1 as the shredding cutter 5.
After reaching the meshing part of 0, it is pulled to the left in FIG. 2 at an appropriate time.

The base paper is completely shredded to the end and pushed into the waste box 61 by the pushing force of the shredding cutter 50.
When the cutting is finished, the clutch mechanism 13 is disengaged and the rotation of the shredding cutter 50 is stopped. Subsequently, the printing plate 2 also comes to a fixed position and stops.

The effects of this embodiment are as described above.

Furthermore, a second embodiment shown in FIGS. 3 and 4 will be described.

The second embodiment corresponds to the case where, in the first embodiment, feed gears are appropriately inserted coaxially with the upper and lower blades of the shredding cutters arranged in a row and meshing as a pair of upper and lower blades. Shaft 52-1, and lower blade shaft 52-2
The configuration is completely the same as that of the first embodiment except for the parts assembled coaxially with each other.

The gears 54-1 and 54-2 fixed to the upper blade shaft 52-1 and the lower blade shaft 52-2, respectively, mesh with each other and move the upper blade shaft 52-1 and the lower blade shaft 52-2 in opposite directions. Rotate.

The upper blade shaft 52-1 has upper blades 50-1, 50-1...
and feed drive gears 51-1, 51-1... are arranged and fixed in a row, and lower blades 50-2, 50 are fixed to the lower blade shaft 52-2.
-2... are arranged and fixed in a row, and the feed driven gear 51-2 is loosely fitted so as to be freely rotatable. The overlapping meshing state of the upper and lower blades is the same as in the first embodiment, and the feed driven gear 51
-2 meshes with the feed drive gear 51-1 and rotates as a result.

In the case of the second embodiment, since a feed gear is additionally provided compared to the first embodiment, there is an advantage that the front edge of the base paper edge portion 1-1 that reaches the entrance of the base paper removal device is first gripped. .

Of course, since the blades of the shredding cutter are lined up on both sides of the feed gear, the base paper 1 that is held in its mouth is immediately shredded, and the base paper 1 is folded by the feed.
Since it does not form a dense and strong string in the direction perpendicular to the feeding direction, there is no fear that it will get caught on the tips of the teeth or become entangled, unlike in conventional devices that only have a feeding gear.

This embodiment also exhibits the same effects as described above.

Here, the first and second embodiments have been described using cylindrical plates, but the present invention can also be applied to a known double-barrel rotary copying machine with exactly the same device configuration.

Even if the printing plate is flat, the same effect can be obtained by guiding the edge of the base paper to the inlet of the device and operating it.

Although the removing device was driven by a sprocket and a roller chain in the embodiment, it goes without saying that the same driving method is also possible by a gear train or the like.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment with the guide plate removed, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a plan view of the second embodiment, and Fig. 4 is the FIG. 2 is a partial perspective view of a shredding cutter according to a second embodiment. 1: Base paper, 1-1: Base paper edge, 2: Plate, 1
3: Clutch mechanism, 50: Shredding cutter, 50-
1: Upper blade, 50-2: Lower blade, 51: Feed gear, 5
1-1: Feed drive gear, 51-2: Feed driven gear, 55: Peeling claw, 56: Solenoid, 57: Bell crank, 60-1: Guide plate, 60-2: Guide plate.

Claims (1)

[Scope of Claims] 1. In a device for removing base paper attached to a printing plate and storing it in a waste box, a passage for the base paper to be removed communicates with the waste box from an entrance, and a shredding cutter is arranged at the entrance of this passage. However, this shredding cutter is provided with a plurality of pairs of rotating blades so as to sandwich the base paper,
A base paper removal device mounted on a mimeograph printing machine, characterized in that the rotary blade rotates in a direction in which the base paper is conveyed. 2. A base paper removal device mounted on a mimeograph printing machine according to claim 1, wherein a feed gear is attached to the shaft of the shredding cutter.