Bookbinding cutting apparatus for cutting edges twice

Abstract

Provided is a cutting apparatus for neatly cutting an end part of a bookbinding article without distorting the end part of the bookbinding article or tearing pages thereof. A first and second cutting position (100, 101) are set, with respect to an end part (1a) of a bookbinding article (1) laid on a table (10), extending parallel to each other provided therebetween with a very small gap (X) in a movement direction (56a), the first cutting position (100) being disposed further to the outside of the bookbinding article (1) than the second cutting position (101), and a control unit (7) controls the action of a cutting blade drive mechanism (21) and a movement mechanism (56) so that the end part (1a) of the bookbinding article (1) is cut at the first cutting position (100) whereupon a cutting blade (20) or the table (10) is moved the distance of the very small gap (X) in the movement direction (56a) and the end part (1a) of the bookbinding article (1) is cut at the second cutting position (101).

Description

technical field [0001] The present invention relates to a shearing machine used in a binding process for cutting the top, bottom and notch of a bound object in order to complete the binding. Background technique [0002] As a conventional shearer, the shearer described in patent document 1 is mentioned, for example. This shearing machine includes a single shearing blade reciprocating vertically between a non-shearing position and a shearing position, and a table for placing and positioning bound objects. In this shearing machine, the operator cuts the end of the bound matter by placing the bound matter on the table and positioning it, and moving the shearing blade from the upper non-cutting position to the lower cutting position. cut. In addition, the operator rotates the bound matter to the top cutting position, the bottom cutting position, and the notch cutting position, and makes the shearing knife reciprocate between the positions, so as to clean the top edge and botto...

AI Technical Summary

Problems solved by technology

Therefore, if Figure 7 As shown, in the case where the end portion 1a of the bound matter 1 to be cut is long, if the end portion 1a of the bound matter 1 is cut only once with the shear blade 20, the end portion 1a of the bound matter 1 may sometimes be cut. Part 1a is skewed or cover 1f of bound product 1 is damaged

Additionally, if Figure 8 As shown, in the case of cutting the folded portion 1g of the bookbinding that folds each page of the bound matter 1 in half, if the end portion 1a of the bound matter 1 is cut only once by the shear blade 20, sometimes The end 1a of the binding 1 cannot be aligned neatly

In this way, in the conventional shearing machine, the end 1a of the bound object 1 cannot be cut neatly in some cases.

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