JPS6339795A - Drill - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a punching machine for punching small holes in paper for binding, and more particularly to a punching machine that can punch a large number of sheets of paper at once.

[Conventional technology]

Conventional punching machines of this type drill holes by rotating a hollow punching rod, which creates holes through friction with the paper.

The sharpness of the cutting edge deteriorated in a short period of time, and a mechanism for rotation was also required.

[Purpose of the invention]

An object of the present invention is to provide a punching machine that can punch a large number of sheets of paper in one operation using an extremely simple mechanism without rotating the punching rod.

[Structure of the invention]

The present invention provides a mounting table on the front end of the machine body on which a stack of paper is placed, and supports a perforated waste tray with a perforated rod suspended above the hollow perforated rod receiving member exposed on the mounting table so as to be able to descend and rise; In addition, the perforated waste tray and the paper holding plate placed in front of it are connected through a pin and a vertical slot into which the pin is inserted, and a downwardly acting spring is hooked to the paper holding plate, and the lower end of the paper holding plate is connected to the perforated rod. It is located close to.

[Embodiment] To explain the illustrated embodiment, reference numeral 1 denotes a machine body, a mounting table 2 for placing a bundle of paper is provided on the front surface of the machine body, and a perforated rod receiving member 4 is fitted into a long hole 3 formed in the mounting table 2.

Reference numeral 5 denotes a hollow perforation rod suspended on the receiving member 4, and is fixed to the perforation waste receptacle 7 by a retaining pin 16. The drilling debris receiver 7 is fixed by screws 12 at the tips of the pair of actuating arms 11.11' whose rear ends are engaged with the free fulcrum shaft 10, and the rear surface of the drilling debris receiver 7 is attached to the tip edge of the frame 13. The paper presser plate 14 is placed on the tip surface of the perforated waste receiver 7 so as to move vertically in contact with the paper presser plate 14, and the receiving pin 1 is inserted into the vertical groove hole 15 formed in the paper presser plate 14.
6 is fixed to the perforated waste receiver 7, and the upper end bent piece 1 of the paper press plate 14 is fixed.
Both ends of the coil spring 25 are hooked onto the support pin 17 attached to the lower end of the frame 13 and the paper presser plate 14 is pulled downward, and is received by the pin 17. Moves together with 25 forces, and paper press plate 1
Inclined bent portion 1 so that the lower edge of 4 is lined up with the center of the perforated rod 5.
8 will be provided. 19 is a paper press plate] - 4 is a guide plate and two sheets are attached to the frame 13. 2o is a forward and reverse rotating motor that moves the operating arm 11.11' up and down, and is built into the fuselage 1, and the V pulley 22 and motor shaft 2 fixed to the 4i 11121.
Put the V-belt 26 around the ■ pulley 24 of the a-swivel shaft 23, which is set up in parallel with 1, and! ! ! The A pivot shaft 23 is the operating arm 11.11'
Screw the helical shaft 2 into the female thread 27 of the horizontal plate 24
With the forward rotation of 3, the operating arm descends around the fulcrum shaft, and after drilling, although it is not shown in the figure, the helical shaft is reversely rotated by an electric device to raise the operating arm.

[Operation of the invention]

When a stack of paper is placed on the loading table and the switch is operated, the perforating rod lowers and the retaining pin 16 also lowers, so that the spring 25
The paper presser plate 14 also descends to press the paper, and then the perforating rod punches a hole in the paper stack and returns to the upper position.

〔Effect of the invention〕

Since the present invention presses and perforates the paper stack near the perforating rod with one paper presser plate, in other words, it presses it in a linear manner, the clamping effect works effectively, increasing the clamping pressure and improving the perforating ability. be able to.

[Brief explanation of drawings]

The drawing shows an embodiment of the drilling machine according to the present invention.
Figure 1 is a side view, Figure 2 is a plan view, and Figure 3 is a front view. Patent applicant: Newcon Industrial Co., Ltd., -zu \ Agent: Hidefu Dohashi
. , Nodo Tsuyoshi Eto 1
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Claims (1)

[Claims] A mounting table is provided at the front end of the machine for placing a stack of paper, and a perforated waste tray with a perforated rod suspended above the hollow perforated rod receiving member exposed on the mounting table is supported so as to be able to descend and rise. The receiver and the paper presser plate placed on the front side are connected through a pin and a vertical groove hole into which the pin is inserted, and a downwardly acting spring is hooked to the paper presser plate, and the lower end of the paper presser plate is placed close to the perforation rod. Drilling machine located at