Take-up reel, veneer reeling apparatus, tape feeding unit...

B - Operations – Transporting – 27 – D

Patent

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Details

B27D 1/00 (2006.01) B27D 5/00 (2006.01) B27L 5/00 (2006.01) B65H 16/10 (2006.01) B65H 18/16 (2006.01) B65H 18/22 (2006.01) B65H 27/00 (2006.01) B65H 29/00 (2006.01) B65H 75/04 (2006.01) B65H 75/08 (2006.01)

Patent

CA 2330146

A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel. A veneer reeling apparatus comprises: a take-up reel disposed in a veneer sheet reeling position in a rotatable manner; a drive roller disposed on the lower surface of the take-up reel, transmitting a driving force with a variable speed; a veneer dryer disposed upstream from the veneer sheet reeling position; a conveyor provided between the terminal end of the veneer dryer and the drive roller in the veneer sheet reeling position; and a plurality of thread feeding mechanisms disposed at arbitrary spatial intervals along a length direction of the take-up reel for a veneer sheet, wherein a continuous dried veneer sheet or dried veneer sheets whose sizes are of a constant length or of a length at random are wound on the take-up reel to form a veneer roll with threads as guide by a frictional force of the drive roller. Further, pairs of two overlapping veneer sheets or sets of a pair of two overlapping veneer sheets and a single veneer sheet can be wound on the take-up reel in a composite form.

L'invention concerne une bobine d'enroulement dont le diamètre est au moins 85 fois supérieur à l'épaisseur du placage, lequel a une longueur égale ou supérieure à 300 mm, de manière à présenter une courbure capable de réduire les fissurations d'une partie parallèle aux fibres produites lorsque le placage est enroulé sur une bobine après séchage. Il existe une bobine d'enroulement rotative, un cylindre d'entraînement à vitesse variable situé sur le côté inférieur de la bobine d'enroulement, une sécheuse de placage située en amont de la position d'enroulement, un transporteur situé entre l'extrémité de la sécheuse et le cylindre d'entraînement, et plusieurs mécanismes fournisseurs d'élément fileté disposés selon des intervalles préétablis dans le sens longitudinal de la bobine d'enroulement. Le placage séché par la sécheuse de placage est enroulé sur la bobine d'enroulement par le frottement exercé via le cylindre d'entraînement, en utilisant l'élément fileté comme guide pour former un rouleau.

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