JPS60301Y2 - Stencil sheet ejection promoting device for rotary stencil printing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for discharging used stencil sheets from a rotary stencil printing device.

A rotary stencil printing device has a printing drum, a stencil paper is pasted around the printing drum, the printing drum is rotated while supplying ink from inside the printing drum, and the stencil paper is pasted on the circumferential surface of the printing drum. The apparatus is configured to produce printed matter by bringing printing paper into contact with the stencil paper.

When the required printing process is completed in such a rotary stencil printing apparatus, it is necessary to remove the used stencil sheet from the printing drum.

This work has conventionally been done manually, but this is a relatively troublesome work and there is a great risk of staining hands and clothing with ink.

In order to deal with this problem, a technology has been developed that automatically peels off used stencil sheets from the printing drum, and also automatically compresses and guides the stencil sheets peeled off from the printing drum to a disposal path. A technique has been developed that makes it easier to peel off used stencil sheets by putting the used stencil sheets into a box or bag placed at the lower end of the passage.

Regarding these techniques, Utility Application No. 1795-1795 filed on December 24, Showa 5 Group by the same applicant as the present applicant.
No. 95, Utility Model Application No. 179596/1982, and Japanese Patent Application No. 17391/1983 filed on February 15, 1933 have already been filed.

According to the techniques proposed so far in each of the above applications,
The stencil sheet, which is held affixed around the printing drum by the viscosity of the ink, is rotated while the stripping pawl element is engaged with ears provided at one end of the stencil sheet. The printing drum is peeled off from the printing drum through the ears, and then bitten into the peeling gear pair from the ears and pulled in a direction away from the peripheral surface along the rotating direction around the printing drum. The tray is peeled off from the drum and conveyed, and then folded into a pan by a partition wall that blocks its movement, and compressed in the form of a folded body while being substantially perpendicular to the direction of rotation of the circumferential surface of the printing drum. is moved in the direction of
The waste is guided to a waste passage extending downward, and a receiver placed at the lower end thereof is adapted to be thrown into a box or bag.

From the viewpoint of making the entire device compact, the waste passage should be accommodated in a narrow space with as little waste as possible, and therefore the waste passage is quite narrow.

As mentioned above, the discharge stencil gage 1 is led to the waste passage, and the receiver placed below the open lower end of the waste passage falls into the box or bag. The discharge stencil sheet is a piece of highly sticky sheet with a layer of ink on one side, and as it travels down the narrow waste aisle, its tackiness often causes it to stick to the aisle wall. If the container is allowed to fall further than that, the channel may become clogged before the box or bag is full.

The present invention solves such problems and provides I,
The purpose is to provide a further improved stencil sheet D for a rotary stencil printing machine.

According to the present invention, the stencil sheet is peeled off from the printing drum l of a rotary stencil printing device and is conveyed along the direction of movement of the periphery of the printing drum as the printing drum rotates. A stencil sheet discharge promoting device for a stencil sheet discharging device which stacks and compresses the sheet and guides and discharges the stencil sheet in a direction substantially perpendicular to the conveying direction and extending downward from the conveying waist, wherein This is achieved by a stencil sheet ejection promoting device which is provided with a rotating body having a radial protrusion arranged to rotate around an axis substantially perpendicular to the longitudinal direction of the stencil sheet ejecting device. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows one embodiment of the stencil sheet ejection promoting device according to the present invention, which is incorporated into a part of the rotary stencil printing device proposed in Japanese Patent Application No. 17391/1983 mentioned in item 11. FIG. 2 is a schematic cross-sectional view taken along line II--II in FIG. 1.

As explained in the specification and drawings of Japanese Patent Application No. 55-17391, the stencil sheet 5, which is kept stuck to the circumferential surface of the printing tram 1 due to the viscosity of the ink, is used for printing [. The attached stencil sheet is peeled off from the printing tram 1 against the holding force of the bin 4 by an ear 6 or a sheet peeling claw 10 provided at the front edge in the direction of rotation of the ram, and then the gear pair 17 is driven to rotate. ,1
8, the receiver is pulled in a direction away from the circumferential surface of the printing drum 1 along the direction of rotation of the circumferential surface of the printing drum 1, and at the same time is peeled off from the printing drum. being transported to.

After the stencil sheet is conveyed into the receiving tray 24, its lug portion 6 hits the barrier wall 22 and its movement is blocked.
Further, as the stainless steel parts 8 are fed, they are sequentially folded in the vertical direction, and the receiver is received in the tray 24 as a folded body.

Next, the folded body of the stencil sheet is rotated by the rotation of the endless chain 44, so that the pawl 45 provided on a part of the chain moves downward as seen in FIG. is conveyed in a substantially perpendicular direction, sandwiched between rolls 27 and 28, compressed between these rolls, and directed to a waste passage 26 extending downwardly from the exit of said rolls. .

In the waste passage 26, there is a rotating body having several radial protrusions at a position where the folded body 5' of sudenshi-h, which is compressed by rolls 27 and 28 and dropped into the passage, comes into contact with the folded body 5' on the way of falling. 52 is provided, and a chain wheel 53,
54 and an endless chain 55 through a transmission mechanism to the roll 27.
A rotational driving force is transmitted from the shaft 29 of the roll 27, and the roll 27 is rotated in the same direction as the roll 27.

When the rotating body 52 is rotated -3 clockwise as seen in FIG.
The radial protrusions of the rotating body 52 come into contact with the lower surface of the folded stencil sheet, but since the ink layer is attached to this lower surface, the stencil sheet is folded due to its adhesiveness and the catch by the protrusions. The body 5' does not stick to the wall of the passage, but falls down inside the waste passage as if being scraped off in a manner not shown in FIGS. 3, 4, and 5. The lower end of the waste passage The receiver placed in the box is dropped into a box or bag.

It is preferable that the outer wall of the waste passage 26 is made of transparent plastic or the like so that the inside can be seen.If the inside of the waste passage 26 is clogged for some reason and the ejection of the stencil sheet is obstructed, this can be done externally. It would be nice if it could be confirmed visually.

This will help identify and eliminate the cause of the blockage.

With this configuration, a large space is created in the waste passage in the stencil sheet discharge device that automatically peels off the used stencil sheet from the printing toe of the rotary printing device and sends it to the waste passage for discharge. without spending
Even if this passage is narrow, the adhesive used stencil sheet having an ink layer can be reliably dropped downward without clogging the disposal passage.

Although the present invention has been described above in detail with respect to one embodiment, the present invention is not limited to this embodiment, and various modifications can be made to this embodiment within the scope of the present invention. It will be clear to those skilled in the art that

[Brief explanation of the drawing]

Fig. 1 is an illustrative plan view showing one embodiment of the stencil sheet ejection promoting device according to the present invention incorporated in a part of a rotary stencil printing device, and Fig. 2 shows the line of the device shown in Fig. 1. −
Illustrative sectional views by ■, Figures 3, 4, and 5 are
FIG. 3 is a schematic view showing the operating state of the rotating body shown in FIGS. 1...Print tram, 4.Pin for song/stencil sheet installation, 5...stencil sheet, 6...
...Ear part, 8...Stencil part, 10...
...Claw, 17,18...Gear, 22...
...Bullet wall, 24...The receiver is a plate, 26...
・Disposal passage, 27, 28... field, 29...
... Axis of roll 27, 44 ... Endless chain, 45
...Claw, 52 ...Rotating body, 53, 54
... Chain wheel, 55 ... Endless chain.

Claims (1)

[Scope of utility model registration request] A stencil sheet that has been peeled off from a printing drum of a rotary stencil printing device and conveyed along the direction in which its peripheral edge moves as the printing drum rotates is folded and compressed while being compressed and placed in a direction substantially perpendicular to the conveyance direction. a stencil sheet ejecting device for a stencil sheet ejecting device that conveys the stencil sheet in a direction and guides and ejects the stencil sheet into a downwardly extending waste passage, the stencil sheet ejecting device being adapted to convey the stencil sheet in a downwardly extending waste passageway and discharging the stencil sheet about an axis substantially perpendicular to the longitudinal direction of the stencil sheet ejection device; 1. A stencil sheet ejection promoting device, comprising: a rotating body having a radial protrusion arranged to rotate.