Method and manufacturing a rotary die cutting machine, and...

B - Operations – Transporting – 23 – P

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B23P 15/40 (2006.01) B26F 1/44 (2006.01)

Patent

CA 2169658

A drum half of wood destined to form part of a wooden drum for a ro- tary die cutting machine is disclosed. The cutting pattern (3) of the drum half (1) is produced by means of laser beam cutting, and the laser-beam-cut grooves (6) extending in the circumferential di- rection of the drum half is formed of chain bridges (8) adjacent to the edges of the drum half. In a method of man- ufacturing a rotary die cutting machine laser beam cutting is used to produce the chain bridges in which 4-mm-long wooden bridges (9) alternate with 4- mm-long cuts (10).

Demi-tambour en bois destiné à former une partie d'un tambour en bois utilisé dans une machine de découpage à l'emporte-pièce. La matrice de découpage (3) du demi-tambour (1) est obtenue par découpage au laser, et les rainures (6) découpées au laser s'étendent dans le sens circonférentiel du demi-tambour et comprennent une suite discontinue de parties pleines (8) à proximité des bords du demi-tambour. Selon le procédé de fabrication d'une machine de découpage à l'emporte-pièce, on réalise un découpage au laser afin de produire la suite discontinue de parties pleines dans laquelle des parties pleines en bois (9) longues de 4 mm environ sont alternées avec des parties évidées (10) longues de 4 mm environ.

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