JPS6243755Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is a perforation system that allows punching or cutting operations to be performed by operating a handle when aligning and binding documents or thick, multi-layered papers. It relates to a paper pressing device such as a machine or a cutter.

A conventional paper presser of this type has a paper presser rod rigidly attached to a support shaft whose both ends are supported on the surface of a paper tray, a spring that acts in the paper presser direction on the support shaft, and a spring provided at one end of the support shaft. Generally, the paper presser rod was opened and closed up and down by operating the handle rod, but the strength of the spring pressure changed depending on the thickness of the paper, and the handle rod was operated in the opening direction. Since the handle must be pulled up against spring pressure, the handle is very heavy to operate and becomes tiring when operated repeatedly without interruption.

In order to deal with these conventional problems, this invention applies a predetermined spring pressure regardless of increases or decreases in the thickness of the paper, and also causes minimal discomfort even when pulling up the handle lever without feeling any spring pressure. The technical challenge is to enable easy operation.

In order to solve the above technical problems, this invention
A support shaft 4 is horizontally supported by bearings 2 and 3 with both ends rotatably supported on the paper tray 1, a handle rod 5 protruding from the end of the support shaft, and a handle rod that rotates together with the support shaft 4. The spindle 4 is rotated so that the paper is pressed by the operation in step 5.
In a device consisting of a paper presser rod 6 protruding from the support shaft 4, the support shaft 4 is attached to the end of the handle rod attachment side of the support shaft 4.
A handle rod attachment boss 7 that rotates together with the handle rod is provided, and the handle rod attachment boss 7 is freely rotatably fitted and supported by a fixed ring 8 protruding from the bearing 3, so that the handle rod 5 can be rotated by a screw. It is screwed onto the mounting boss 7 so that its tip corresponds to the circumferential surface of the fixed ring 8 so as to be movable toward and away from it.

The details will be explained below with reference to the embodiments shown in the drawings.

A support 9 is erected on the center surface of the rear part of the paper tray 1, and a punching machine main body 10 incorporating a motor and the like is installed on the pillar 9 so as to be able to move up and down, and the main body 10 can be moved up and down by operating the punching handle 11. It's becoming like that. A drill 12 consisting of a single hollow tube is provided downward in the main body 10, and this drill is used to make holes.

The support shaft 4 is formed by fitting a square rod such as a hexagonal rod into a square hole 7a formed on the inner end surface of the mounting boss 7, and attaching the screw 13.
It is fixed in place and integrated in the direction of rotation and the direction of extraction. A round hole 7b is formed on the outer end surface of the mounting boss 7 and is coaxial with the square hole 7a, into which the fixed ring 8 is fitted. As shown in FIGS. 3 and 4, the fixed ring 8 has annular flanges 8b and 8c at both ends, and a screw shaft 8d for fixing protrudes from the outer end. Insert it so that it protrudes outward from the hole and secure it firmly with the nut 14.

The handle rod 5 is made of a round metal bar with a screw 5a provided at its tip and an operating knob 5b integrally provided at its rear end, and the threaded portion 5a at the tip is screwed into the mounting boss 7 in a direction perpendicular to the axis. The knob 5b is rotated left and right so that it can move toward and away from the circumferential surface of the fixed ring 8. Reference numeral 15 denotes a stopper ring that restricts the rotation range of the handle rod 5, and a restriction pin 17 that is fixed to the rod 5 and projects forward by a stop pin 16 is inserted into a circular arc elongated hole 18 formed on the corresponding mounting boss 7 side. It is inserted. Therefore, the rotation angle of the handle rod 5 is regulated by the length of this circular arc elongated hole 18 and the handle rod 5 is operated within that range, which prevents the handle rod 5 from becoming too loose and allows one-touch operation at a small angle. .

The paper presser rod 6 is made of a steel round bar and has a U-shaped frame shape having an arm portion 6a and a presser portion 6b.
A flat presser piece 19 is swingably attached to the plate.

To set the paper using the paper presser and perforate it, proceed as follows.

When the knob 5b at the end of the handle rod 5 is turned in the loosening direction and pulled up, the paper presser rod 6 is separated from the top of the paper tray 1 and pulled upward as the support shaft 4 rotates. Align the paper a to be perforated and place it on the paper tray 1, press the tip against the contact plate 20 to determine the position, and then lower the handle lever 5. The paper presser lever 6 will also lower together with this and place the paper a on top of the paper a. comes into contact with. After that, when the handle rod 5 is further pressed down, the paper presser rod 6
Since it is formed of an elastic rod with spring properties and bending force, it bends into a concave shape when pressed as shown in Figs. In this state, when the knob 5b is rotated in the tightening direction, the end of the threaded part 5a at the tip of the handle rod 5 will be attached to the fixed ring 8.
The support shaft 4 is prevented from rotating by the fixed ring 8, and the paper presser rod 6 remains flexible and presses against the upper surface of the paper a. Press firmly.

Therefore, the paper pressing force can be freely adjusted by adjusting the pressing force of the handle rod 5.

This device consists of the above-mentioned structure, and by one-touch operation by vertically operating the handle rod and rotating the handle knob, the paper presser rod can be opened and closed vertically and pressed and locked at will. By completely eliminating the spring pressure, you can easily pull up the paper using only the weight of the paper presser rod, etc., or by adjusting the pressing force of the handle rod according to the thickness and properties of the paper, you can create a powerful paper presser that takes advantage of the spring pressure. It is light and easy to operate, so you won't get tired even when working continuously, increasing work efficiency.
It has a simple structure, is durable, and can be implemented at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a drilling machine showing an embodiment of the invention, Fig. 2 is a side view of the main parts thereof, and Fig. 3 is a plan view of the same, partly showing a cross section. FIG. 4 is an exploded perspective view of the parts. 1...Paper stand, 2, 3...Bearing, 4...Spindle,
5...Handle rod, 6...Paper presser rod, 7...Mounting boss, 8...Fixed ring, 8a...Surrounding surface.

Claims (1)

[Claims for Utility Model Registration] (1) A support shaft 4 whose both ends are rotatably supported horizontally by bearings 2 and 3 on a paper tray 1, and a handle rod 5 protruding from the end of the support shaft; and a paper presser rod 6 projecting from the support shaft 4 so as to rotate together with the support shaft 4 and press the paper by operating the handle rod 5, the handle rod attachment side end of the support shaft 4. A handle rod attachment boss 7 that rotates together with the support shaft 4 is provided in the part, and the handle rod attachment boss 7 is rotatably fitted and supported by a fixed ring 8 protruding from the bearing 3. A paper holding device for a punching machine or the like, characterized in that it is screwed into the mounting boss 7 in a screw-rotatable manner so that its tip corresponds to the circumferential surface of a fixed ring 8 so as to be able to come into contact with and separate from it. (2) A paper pressing device such as a punching machine according to claim 1 of the utility model registration claim, wherein the paper pressing rod 6 is formed of an elastic rod having a spring property and a bending force.