JPS6226318B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary printing press having an automatic plate discharge device that automatically discharges used or used base paper.

The most troublesome task in mimeographing is to remove the base paper used after printing is completed and dispose of the base paper that has a lot of ink on it.Also, the base paper that you want to save, such as type base paper, has a lot of ink on it after printing. The task of preserving things properly is also troublesome.

Therefore, an object of the present invention is to remove the above-mentioned drawbacks of the prior art by releasing the clamps on the head of the base paper after printing in a single-cylinder type or double-acting rotary copying machine. The base paper is automatically removed from the machine together with the discharged paper without getting your hands dirty by feeding the discharged paper and engaging the leading edge of the discharged paper with the head of the base paper and applying the discharged paper to the back side of the base paper. To provide a rotary copying machine having an automatic plate discharge device which can discharge the plate, store it neatly as it is, and reuse it.

Other objects, features and advantages of the present invention will become apparent from the detailed description below, taken in conjunction with the accompanying drawings.

1 to 3 of the drawings show an embodiment of a double barrel type rotary copying machine having an automatic plate ejecting device according to the present invention. The illustrated rotary copying machine has two cylinders 3, only one of which is shown in FIG. 4 is hung and a screen 5 is stretched. On the belt 4 on which the screen 5 is stretched, there is a clamp 1 for positioning and attaching the head of the base paper, especially the head of the base paper.
0, and a paper raising member 20 is provided adjacent to this clamp 10 so as to extend in the lateral direction. In particular, as shown in FIG. 3, the clamp 10 is constructed by fixing a plurality of clamp plates 11 to a clamp shaft 12 supported by bracket parts 16 at both ends of a support plate 15 fixed to the belt 4. 17 against the support plate 15, and an arm 14 serving as a cam follower is attached to one end of the clamp shaft 12.
is set up in a bent manner. Of course, the clamp plate may not only have a short width as shown in the drawings, but may also be a single long and narrow plate-like member. Similarly, the base paper raising member 2
0 has a boss 23 on a shaft 22 supported by bracket parts 26 at both ends of a support plate 25 fixed to the belt 4.
A plurality of plate members 21 having a
It is pressed against the support plate 25 by a spring 27, and an arm 24 forming a cam follower is bent and provided at one end of the shaft 22. The base paper raising member 20 is also a single elongated plate-like member, and required bosses can be provided at intervals corresponding to the holes in the head of the base paper. Further, as shown in FIG. 3, the clamp shaft 12 and the shaft 22 of the paper raising member 20
It should be noted that the clamps 10 and the paper raising member 20 are in opposed positions, and that the rotating directions of the clamp 10 and the paper raising member 20 are opposite to each other, that is, in opposite directions.

A cam device 30 for actuating the clamp 10 and the sheet raising member 20 is provided at the master discharge operating position, that is, at the upper left position of the upper cylinder 3 as shown in FIG. The cam device 30 consists of a pin-shaped cam member 31 for clamp operation and a fan-shaped cam member 32 for the paper raising member 20, which are respectively provided at corresponding positions on the frame 2, as shown in FIG. When activated, for example, the arm 14 of the clamp 10 and the arm 24 of the paper raising member 20 can be protruded to the inner working position by the action of a magnet and engaged with the associated cam members. It is held in the retracted position to prevent friction. Further, a positioning member 35 made of an elongated plate member is provided substantially horizontally in relation to the position of the cam device 30, and below the outer edge of this positioning member 35, a pair of discharge paper feed rollers 41 and The feed roller 4 has a curved tip for guiding and feeding the discharged paper to the feed roller 41.
A discarded paper stage 42 is provided below the paper plate 1 . Discarded master paper is set on this discarded master paper stage 42 so that the discharged master paper can be sent to a paper feed roller 43 as necessary, and a cassette in which the discharged master paper is set in advance can be provided. It's summery.

Furthermore, a master discharge stage 45 and a guide cover plate 46 are provided substantially parallel to the master discharge paper stage 42, and an auxiliary roller 48 is provided in contact with the guide cover plate 46. These plate discharge paper stage 42, plate discharge stage 45, and guide cover plate 46 are arranged in an inclined parallel state as shown in the figure.

The base paper and discharge paper for use in the rotary copying machine of the present invention constructed in this manner are shown in FIGS. 4 and 5. The discharge paper 50 is preferably made of rather thick paper, and is provided with a plurality of protrusions 51 at one end, as shown in FIG. In the illustrated example, there are four protrusions 51, and the outer two are slightly smaller than the inner two, but they may all be the same size, and the spacing between these protrusions 51 is set to the top of the base paper 55. It is provided corresponding to the slot or slit 58 provided in the portion 56. The base paper 55 with a head 56 has a head 56 made of rather thick paper at one end of the base paper 55, and this head 56 has a plurality of holes 59 for positioning with respect to the screen. , an elongated slot or slit 58 for the protrusion 51 of the discharged paper 50 is provided.

In the rotary copying machine of the present invention equipped with such an automatic master ejecting device, the head 56 of the base paper 55 as shown in FIG. is fitted into the boss 23 of the base paper raising member 20, and the base paper 55 is pasted and mounted on the screen 5.

When the predetermined number of sheets have been printed and the printing is finished, the rotary copying machine is automatically stopped. Thereafter, when the master discharge switch is activated, one discharged master paper 50 is sent from the discharged master paper stage 42 to the discharged master paper feed roller 41 by the paper feed roller 43. At the same time, the cam device 30 is electrically actuated to protrude inward, and the cylinder 3, which had been stopped, begins to slowly rotate at a low speed. Arm 14 hits the end of 14
is pushed, the arm 10 is rotated counterclockwise about the clamp shaft 12, and the head of the original paper is released. Next, the end of the arm 24 of the paper raising member 20 begins to rest on the outer peripheral surface of the fan-shaped cam member 32, and the arm 24 is raised. The head of the base paper is raised, and the head of the base paper is separated from the cylinder 3. cylinder 3
continues to slowly rotate further, so that the base paper is placed in the positioning member 35 with its head still raised.
sent above. In this way, when the head of the base paper is fed to a predetermined position and the slit in the head comes to about the end position of the positioning member 35, the rotation of the cylinder 3 is stopped and the discharge paper feed roller 41
Then, the auxiliary roller 48 starts rotating, and the protrusion 51 forming the feed claw of the discharged paper 50 is inserted into the slit 58 of the head 56 of the base paper 55, and then the cylinder 3
starts rotating again. The rotation speed of cylinder 3,
Preferably, the discharge paper feed roller 41 and the auxiliary roller 48 are rotated at corresponding speeds. In this way, the base paper is peeled off from the screen by the force of the discharged master paper, so the base paper sticks to the discharged master paper, and the discharged master paper and the base paper are combined and sent to the master discharge stage. When the discharged paper is completely sent out from the discharge roller, the discharge of the original is completed, and after that, it is sent to the master discharge stage only by the auxiliary roller, and with the help of the guide cover plate, the discharged paper and the original paper are separated. is smoothly and automatically delivered to the plate discharge stage, the user can process the paper without getting his or her hands dirty, and the original paper can also be reused.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway elevational view showing an embodiment of a rotary copying machine of the present invention having an automatic plate ejecting device.
Fig. 2 is a side view thereof, Fig. 3 is an enlarged view showing the clamp, paper raising member, and positioning member slightly expanded, and Figs. 4 and 5 are the discharged paper and the head used in this invention. FIG. In the figure, 2...Frame, 3...Cylinder, 4...Belt, 5...Screen, 10...Clamp, 1
1... Clamp plate, 12... Clamp shaft, 14...
... Arm, 20 ... Paper drafting member, 21 ... Plate member, 22 ... Shaft, 24 ... Arm, 30 ... Cam device, 31, 32 ... Cam member, 35 ... Positioning member, 41 ... Discharge paper feed roller, 42...
Discharge paper stage, 43...Paper feed roller, 45...
Plate discharge stage, 46... Guide cover plate, 48...
Auxiliary roller, 50...Discharge paper, 51...Protrusion,
55...Base paper, 56...Head, 58...Slit.

Claims (1)

[Scope of Claims] 1. A pair of belts rotatably provided in a frame in an endless manner via a pair of cylinders, a screen stretched between the belts, and a screen provided between the belts that covers the head. a cam follower formed at one end of the clamp shaft of the clamp; and a cam follower rotatably provided between the belt and spaced apart from the clamp by a required distance; a cam follower formed at one end of a shaft of the base paper raising member, a cam device provided on the frame and capable of being moved in and out, and a cam follower provided on the cam device and each of the cam followers. a pair of cam members that engage with the head, a plurality of slits formed in the head, a discharge paper stage provided in the frame for feeding the discharge paper toward the base paper, and the discharge paper stage. a plate discharge stage and a positioning member provided adjacent to the plate discharge stage and a plurality of protrusions formed at one end of the plate discharge paper; and a slit of the base paper caused by the action of the cam member after printing with the base paper is completed. The rotary press is characterized in that the base paper and the discharged paper are sent together to the master discharge stage via the positioning member by engaging a protrusion of the discharged paper sent from the discharged paper feed roller. Mimeograph machine. 2. Claim No. 2, characterized in that it comprises a plate member provided on the shaft of the base paper raising member, a boss formed on the plate member, and a hole formed in the head of the base paper. The rotary copying machine described in paragraph 1.