JPH0214415Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper mounting device for winding and fixing mimeograph paper around a rotating drum of a mimeograph paper making machine.

A mimeograph machine prints the manuscript on one side of a rotating drum.
This is a device that rotates a drum to make the mimeograph paper by electrical discharge perforation based on optical scanning, with a mimeograph paper wrapped and fixed on the other side, a photoelectric scanning device on the base paper side, and a recorder on the base paper side. . In such an apparatus, base paper and mimeograph paper must be loaded onto a drum for each plate making process, and various base paper loading devices have been proposed.

First, an example of a conventional paper loading device for a mimeograph plate making machine will be explained, and its problems will also be mentioned.

FIG. 1 is a partially cutaway front view of an example of a base paper loading device for a mimeograph plate making machine, and FIG. 2 is a sectional view showing an enlarged main part thereof. As shown in FIG.
are provided, and support pin holders 8 are provided at both ends of the groove 1a. The presser bar 2 is fixed to the upper end of a support pin 3, and the support pin 3 is inserted into a support pin holder 8 and moves up and down. Second
As shown in the figure, the support pin 3 and the support pin holder 8
A coil spring 6 is inserted between them via a washer 9, and constantly urges the support pin 3 upward. A circumferential groove 3a is provided in the middle of the support pin 3. The leaf spring 5 is fixed to the rotating drum 1 together with a support pin holder 8, and is always attached to the support pin 3.
is pressed against. A bent portion is provided at the upper part of the leaf spring 5, and an engagement groove 5a is provided at the tip thereof. The width of the engagement groove 5a is narrower than the diameter of the support pin 3 and wider than the diameter of the circumferential groove 3a (FIG. 2c). An operating piece 4 is fixed to the leaf spring 5, and both ears of the operating piece 4 protrude from the outer periphery of the rotating drum 1.

When fixing the base paper to the surface of the rotating drum 1, insert both ends of the base paper between the rotary drum 1 and the presser bar 2, and then press the presser bar 2, and the support pin 3 will resist the biasing force of the spring 6. Move downward and press support pin 3
When the circumferential groove 3a reaches the position of the bent portion of the leaf spring 5, the engagement groove 5a engages with the circumferential groove 3a and the support pin 3 is held. This is carried out by holding the base paper on the rotating drum 1 using a presser bar 2 which is attached to the rotating drum 1. When removing the base paper from the rotating drum 1, by moving the operating piece 4 in the axial direction of the rotating drum 1 against the biasing force of the leaf spring 5, the engaging groove 5a and the circumferential groove 3a can be engaged with each other. When it is released, the support pin 3 is urged by the spring 6 and flies upward, the presser bar 2 is separated from the rotating drum 1, and the base paper is taken out. According to such a device, the base paper can be quickly attached to and removed from the rotating drum 1.

However, since the shape of the engaging part is weak against the force acting in the disengagement direction, it is difficult to adjust the engagement depth between the engaging groove 5a and the circumferential groove 3a, and a measuring device is used for checking after assembly. was necessary. For this reason, if the adjustment is incomplete, there is a possibility that even if the engaging portions are completely engaged, the depth of engagement will deviate over time as the rotating drum 1 rotates, resulting in disengagement. Furthermore, even if the presser bar 2 is pressed during fixation, the engaging portion 5a and the circumferential groove 3a may not be completely engaged due to the relationship with the operating piece 4, and there is a possibility that the presser bar 2 will come off when the rotating drum 1 is rotated. It was hot.

Therefore, the purpose of the present invention is to provide a mimeograph paper making machine that has a structure that can stably maintain the attached state as the rotating drum rotates, that can be easily attached, and that allows the condition of the engaging portion to be visually checked from the outside. An object of the present invention is to provide a base paper mounting device.

In order to achieve the above object, the present invention provides a base paper loading device for a mimeograph paper making machine, which is arranged in a long groove provided in the longitudinal direction of a rotating drum, facing the long groove, and at the end of the long groove, the base paper loading device of the mimeograph paper plate making machine A base paper loading device for a mimeograph paper plate-making machine that inserts a presser bar that can freely come out and go in a direction and is biased in a protruding direction, and that attaches and holds the presser bar at the end of the long groove to load the mimeograph paper onto the rotating drum. , an engagement hole provided at the end of the presser bar with an inner width larger than an outer width, a head and an outer width smaller than the inner width of the engagement hole and larger than the outer width. and a leaf spring having a neck smaller than the width and biased outward and having a base supported within the rotating drum, and pushing the leaf spring inward against the biasing force to the inside of the engagement hole. When the head of the leaf spring is brought to a width of , the presser bar protrudes in a radial direction to create a gap between the presser bar and the drum,
After inserting the starting and ending ends of the mimeograph paper into the gap, the pressing bar is pressed to bring the engaging hole up to the neck of the leaf spring, so that the neck of the leaf spring is moved to the outside width of the engaging hole. The presser bar is engaged with the presser bar so that the mimeograph paper is mounted on the rotating drum.

According to the above structure, the object of the present invention can be completely achieved.

Hereinafter, the present invention will be explained in more detail with reference to the drawings and the like.

FIGS. 3 and 4 are cross-sectional views showing an embodiment of a paper loading device for a mimeograph paper plate-making machine according to the present invention. Note that the same reference numerals are given to parts exhibiting the same functions as those of the conventional example described above.

Support pin holders 8 are provided at both ends of the groove of the rotating drum 1.
is provided. The support pin 3 is provided on the support pin holder 8 so as to be movable up and down, and the washer 9 provided on the support pin 3 and the support pin holder 8
A spring 6 is inserted between them to constantly bias the support pin 3 in the projecting direction. A press bar 2 is fixed to the upper end of the support pin 3 via an engagement member 10.
The engagement member 10 is provided with an engagement hole 10a consisting of a wide portion and a narrow portion. The base of the leaf spring 5 is screwed to the support pin holder 8, and a biasing force acts on the support pin holder 8 in the pressure direction. A head portion 5a and a neck portion 5b are formed at the tip of the leaf spring 5, and the head portion 5a faces the engagement hole 10a of the engagement member 10. The lower end of the operating piece 4 has an L-shaped leg 4.
a and arm portions 4b extending above the support pin holder 8 are provided, and the leg portions 4a are inserted into square holes in the middle plate 8a of the support pin holder 8. The spring 11 is screwed to the leaf spring 5, and its tip abuts the operating piece 4 through a small hole 5c in the leaf spring 5.

Next, the operation of attaching and detaching the device according to the present invention will be explained.

Before the base paper is fixed to the surface of the drum 1, the head 5a of the leaf spring 5 faces the wide part of the engagement hole 10a, and the support pin 3 protrudes upward due to the spring 6 (as shown in Fig. 3). situation). To fix the paper, insert both ends of the paper between the presser bar 2 and the drum, and then press the presser bar 2 from above. The support pin 3 and the engaging member 10 will be pushed downward against the biasing force of the spring 6. Move to. The engagement member 10 is the neck portion 5 of the leaf spring 5
When reaching point b, the neck portion 5b engages with the narrow portion of the engagement hole 10a due to the biasing force of the leaf spring 5, and holds the engagement member 10, that is, the presser bar 2 (the state shown in FIG. 4). Conversely, when removing, when the arm portion 4b of the operating piece 4 is moved in the direction away from the support pin holder 8 against the urging force of the leaf spring 5, the neck portion 5b of the leaf spring 5 is moved to the narrow width of the engagement hole 10a. The engaging member 10
is projected upward by the biasing force of the spring 6 of the support pin 3, the presser bar 2 is separated from the drum, and the original paper can be taken out (the state shown in FIG. 3). At this time,
Since the head 5a of the leaf spring 5 is engaged with the wide part of the engagement hole 10a, the leaf spring 5 is separated from the support pin holder 8, but the operating piece 4 is moved toward the support pin holder 8 by the spring 11. Being forced. This is to ensure the next engagement between the leaf spring 5 and the engaging member 10.

As explained in detail above, according to the present invention, the structure is simple, so it is easy to assemble, and the attachment/detachment operation is reliable.Moreover, since the engaged state can be visually confirmed from the outside, it is possible to prevent operation errors and No more problems with it coming off.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an example of a base paper mounting device of a mimeograph plate making machine, and FIG. 2 is a sectional view showing an enlarged main part thereof. FIGS. 3 and 4 are cross-sectional views showing an embodiment of a paper loading device for a mimeograph paper plate-making machine according to the present invention. 1...Rotating drum, 1a...Long groove, 2...Press bar, 3...Support pin, 4...Operation piece, 4a...
Leg, 4b...arm, 5...leaf spring, 5a...head, 5b...neck, 5c...small hole, 6...spring,
8... Support pin holder, 8a... Middle plate, 9... Washer, 10... Engaging member, 10a... Engaging hole,
11...Spring.

Claims (1)

[Scope of utility model registration request] A presser bar is inserted into a long groove provided in the longitudinal direction of the rotating drum, and is disposed opposite to the long groove and is movable in the radial direction of the rotating drum at the end of the long groove and is biased in the projecting direction. In a base paper mounting device of a mimeograph paper making machine that mounts a mimeograph paper onto the rotating drum by engaging and holding the presser bar at the end of the groove, the presser bar end has a shape in which the inner width is larger than the outer width. An engagement hole provided;
a leaf spring having a head portion smaller than the inner width of the engagement hole and larger than the outer width thereof, and a neck portion smaller than the outer width, the leaf spring being biased outwardly and having a base supported within the rotating drum; and when the leaf spring is pushed inward against the biasing force and the head of the leaf spring is brought to the inner width portion of the engagement hole, the presser bar protrudes in a radial direction and connects with the presser bar. After providing a gap between the drums and inserting the starting and ending ends of the mimeograph paper into the gap, pressing the presser bar brings the engagement hole up to the neck of the leaf spring, thereby tightening the neck of the leaf spring. A base paper mounting device for a mimeograph paper plate-making machine, characterized in that the base paper is mounted on the rotating drum by engaging with the outer width portion of the engagement hole to hold the presser bar.