US 5,507,714 AGranted

Apparatus for adjusting jaw gap of jaw cylinder for folder

AssigneeMitsubishi Jukogyo Kabushiki Kaisha

InventorsEiji Furuta, Satoshi Matsushima

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Abstract

A jaw cylinder 30 includes a jaw cylinder body 31 and a folding jaw support 36 rotatably supported with respect to the jaw cylinder body 31, and two folding jaws 11 and 15 are attached to the jaw cylinder body 31 or the jaw cylinder support 36, respectively. The folding jaw 11 is rotated with respect to the folding jaw 15 so as to adjust a gap between the folding jaws 11 and 15 in accordance with the thickness of a product. At this time, a jaw cylinder driving helical gear 38 and a gap adjusting helical gear 39 are moved in an axial direction thereof by an adjusting unit 43 so that the jaw cylinder driving helical gear 38 or a folding cylinder driving helical gear 25 meshing with the helical gear 38 are rotated in a circumferential direction. On the other hand, a support rotating helical gear 37 is rotated in the circumferential direction through the gap adjusting helical gear 39 and intermediate gears 40 and 41 by an amount larger than a rotating amount of said jaw cylinder driving helical gear 38 or the folding cylinder driving helical gear 25.

Claims4

Dependent claims

An apparatus for adjusting a jaw gap of a jaw cylinder for a folder in which a folding blade of a folding cylinder is inserted between a pair of folding jaws provided in a jaw cylinder to doubly fold a folding product held on an outer peripheral surface of a folding cylinder, said apparatus comprising:

a folding jaw support (36) provided concentrically with a shaft (32) of said jaw cylinder (30), one of said pair of folding jaws (11, 15) being fitted to said folding jaw support (36), the other of said pair of folding jaws (11, 15) being fitted to a jaw cylinder body (31);
a jaw cylinder driving helical gear (38) attached to said shaft (32) of said jaw cylinder (30) to be movable in an axial direction thereof but non-rotatable;
a gap adjusting helical gear (39) fixed to said jaw cylinder driving helical gear (38) and having a helical edge with a same direction of a twist angle and the twist angle 18 larger than those of said jaw cylinder driving helical gear (38);
a support rotating helical gear (37) attached to said folding jaw support (36);
intermediate gears (40, 41) coupling said gap adjusting helical gear (39) with said support rotating helical gear (37);
and
an adjusting unit (43) provided on a fixed member of said folder for moving said jaw cylinder driving helical gear (38) in the axial direction.

4 more elements

Dependencies are inferred from the claim text.