JPH09109098A - High-power punch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the relative positions of stop plates and a punching rod every punching action so as to extend a durable period by mounting the stop plates with which the lower end edge part of the hollow punching rod comes in contact, rotatably on a base, and providing these stop plates in linkage with an operating handle for mechanism eccentrically rotated in relation to the vertical motion of the hollow punching rod. SOLUTION: An elevating body 10 provided with a rack 9 is positioned between supporting frames 2, 2, and an operating handle 3 is rotated to make the elevating body 10 descend. A base 1 is rotatably provided with stop plates 17 formed of resin or the like with ratchet teeth 16 formed at the peripheral edges. A pair of operating claws 19 to be engaged with the ratchet teeth 16 are pivotally supported between both stop plates 17 by pins 18. In the case of operating the operating handle 3 to make the elevating body 10 descend, a pape sheaf is punched by a punching rod 15, and the operating claws 19 are advanced through an oscillating rod 26 and a hook-shaped plate 23. Interlocked with the reset action of the operating handle 3 after punching, the stop plates 17 are rotated by a specified angle by the operating claws 19 to change a relative position to the punching rod 15.

Description

Detailed Description of the Invention

The present invention relates to a punch for punching holes in a large number of sheets of paper at once, and in particular solves the inconvenience that the lowest sheet of paper cannot be taken out by digging into an annular groove formed in the receiving plate of the hollow punching rod after punching. It is about the powerful punches.

An object of the present invention is to provide a strong punch capable of preventing the above-mentioned paper damage and remarkably extending the service life of the perforated rod receiving plate.

The means of the present invention are as follows. A mechanism for rotating the eccentric rotation of the receiving plate rotatably with respect to the vertical movement of the hollow piercing rod is attached to the operating plate of the hollow piercing rod. The powerful punch that was set up.

[0004]

[Operation] When the operating handle is lowered, the punching rod descends to make a hole in the paper stack laid on the base. At that time, the operating claw advances.
Next, when the operating handle is returned to its original position, the drilling rod is raised, the operating pawl is retracted, and the receiving plate is slightly rotated to change the relative position to the drilling rod.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 in the drawing is a base, 2 is a support frame standing upright on the left and right ends of the base 1, and a main shaft 4 to which an operating handle 3 is attached.
To the left and right, two left and right pinions 5 are fixed to the main shaft 4, and a circular ring 7 having a pressing piece 6 projecting at an intermediate position is fixed.
An elevating body 10 provided with a rack 9 that meshes with the pinion 5 is located between the support frames 2 and 2, and both side ends thereof are fitted into the guide vertical grooves 11 of the support frames 8 and 8 so that the rack 9 and the pinion 5 mesh with each other. Therefore, when the operation handle 3 is turned to the front, the elevating body 10 is lowered, and when it is turned upward, it is raised. Reference numeral 12 is a return spring which is wound around the guide rods 13 and 13,
A pressing plate 14 is provided at the lower end of 3. Further, 15 and 15 are hollow perforating rods, and the receiving plates (FIG. 4) 17 and 1 formed of a soft body such as resin with ratchet teeth 16 formed on the periphery of the base 1 underneath.
7 is rotatably provided. Then, the central elastic shaft 18 (FIG. 3) is fitted into the hole 19 of the base 1, and the punching rod 15
Is deviated from the center of.

A pair of operating pawls 19 that engage with the ratchet teeth 16 between the two receiving plates 17 are pivotally supported by pins 18 to operate the operating pawls 19.
Inserts the moving plate 21 on which the spring 20 engaging the ratchet teeth 16 is actuated into the recess 22 of the base so as to be slidable forward and backward, and the engaging hole 24 is formed in the hook-shaped plate 23 protruding from the moving plate 21. , A rocking rod 26 having a contact plate 25 in contact with the pressing piece 6 mounted thereon is pivotally attached to the support frame 2 by a shaft 27, and the rocking rod 2
The lower end of 6 is put in the engaging hole 24 of the hook-shaped plate 23 and the hook-shaped plate 2
When the operating handle 3 is operated by causing the spring 28 to act on 3, the elevating body 10 descends, the punching rod 15 perforates the sheet stack P laid on the base, and the operating claw 19 advances. Then, if the operating handle 3 is returned to its original position after perforation, the hook-shaped plate 23 is pulled against the spring 28 and the receiving plates 17, 17 are rotated by a certain angle by the operating pawl 19 and the relative position with respect to the perforating rod 15 is changed. .

Reference numeral 30 denotes a surface plate of the base 1, in which a perforation depth adjusting piece 31 is vertically erected at the tip and a fixing piece 32 is hung at the base end (FIG. 1), and a set screw 33 of the fixing piece 32. Is screwed into the female screw 34 in the base to adjust the fixing position of the surface plate 30 back and forth. Numerals 35 and 36 are width applying pieces of a bundle of paper and racks 37 and 3
8 is provided, and when one of the width contact pieces 35 or 36 is operated, the other width contact piece is also moved by the pinion 39. Reference numeral 40 denotes an exposed elliptical hole of the receiving plate 17 formed in the surface plate 30.

[0008]

According to the present invention, each time the operating handle is operated, the perforation rod contact position of the receiving plate, which is opposed to the lowered position of the perforation rod, changes. Therefore, the receiving plate is effectively used to damage the paper. It can be used for a long time without causing it.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a longitudinal sectional side view of a main part.

FIG. 3 is a vertical sectional front view.

FIG. 4 is a cross-sectional plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 3 Operation handle 10 Ascending / descending body 15 Hollow drilling rod 16 Ratchet teeth 17 Retaining plate 19 Actuating claw 21 Moving plate

Claims (1)

[Claims] 1. A hollow perforating rod having a mechanism for rotatably mounting a receiving plate on the base, which is in contact with the lower end edge of the hollow perforating rod, and rotating the receiving plate eccentrically with respect to the vertical movement of the hollow perforating rod. A powerful punch that is connected to the operation handle of.