Punch

Abstract

The present invention relates to a punch comprising a base; at least two holes are equipped above the base and at least two fixing bases are fixed on the top of the base and aligned to the holes; an upper cover which is equipped on every fixing base by a pivot; a first force application arm of pressing part and a linked first force resistant arm are formed at both ends of the pivot connection points; a linked group which is equipped on every fixing base by linked base between the upper cover and the base; a secondary force application arm with a corresponding guided groove and a secondary force resistant arm with a slot are formed at both ends of the pivot connection points; the guided groove and the first force resistant arm are equipped by pivot; a punching piece which is equipped with a knife; the knife is extended to every fixing base and the base hole for displacement and connected with the secondary force resistant arm by pivot by a link lever; the first force application arm equipped on the upper cover is longer than the first force resistant arm and the secondary force application arm equipped on the linked base is longer than the secondary force application arm; in this way, the punching piece can punch faster and neatly; the pressing can save labor and the structure is simple.

Description

technical field [0001] The invention relates to a punching machine, in particular to a pressing structure of the punching machine. Background technique [0002] The hole punching machine is a cutting stationery. It uses its punch to punch holes and cut the paper below, so that the whole stack of paper forms neat and aligned holes, which is convenient for threading binders or ropes. Binding, to avoid fragmented documents that cannot be archived. [0003] Since the punching machine uses a pressing method to make a punch with a blade to punch holes in the paper, the industry's structural design of the punching machine focuses on how to save labor and cut quickly, so as to improve the punching of the paper. The speed and quality of the hole can play the maximum function of "doing more with less". [0004] It can be seen from Fig. 6 and Fig. 7 that the punching machine 50 includes: a hollow base 51 on which two perforations 52 are formed, and two fixing frames 53 respectively a...

AI Technical Summary

Problems solved by technology

[0005] This kind of punching machine structure mainly uses the upper cover pressing part to pivot with the second pivot as the fulcrum, and then links the lower arm with the upper arm of the moment arm assembly, so that the lower arm also uses the second The pivot is used as the fulcrum to pivot downward, and then the punch that is linked with the pivot of the lower arm produces a displacement punching action; however, the upper arm of the moment arm assembly is pivoted with the upper cover, and the upper cover acts When pivoting, the power is only transmitted to the lower arm through the upper arm, and then the lower arm is linked with the punch to punch holes. This actuation technical means does not see a significant change in the torque, so its The labor-saving effect of the action is limited, and the overall components are cumbersome to make

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