Controlled cutting of multiple webs to produce roofing shingles

Details Controlled cutting of multiple webs to produce roofing shingles Controlled cutting of multiple webs to produce roofing shingles

B - Operations, Transporting

65

H

B65H 23/188 (2006.01)

Patent

CA 2388631

In a method of cutting roofing shingles, multiple webs (50, 52) of roofing material are moved to a cutter (54). The webs are positioned in stacked relationship prior to the cutter. The webs have distinct portions (46) such as tabs. The locations of the distinct portions of the moving webs are sensed by sensors (60, 62). End cuts are simultaneously cut through the multiple stacked webs with the cutter to produce separate roofing shingles from the webs. The movements of the webs are controlled (82), based on the sensed locations of the distinct portions, so that the end cuts of the roofing shingles are positioned at predetermined locations relative to the distinct portions.

Dans un procédé de découpe de bardeaux de toiture, plusieurs bandes (50, 52) de matériau de couverture sont déplacées jusqu'à un dispositif de découpe (54). Les bandes sont positionnées de manière empilée avant d'arriver au dispositif de découpe. Les bandes comportent des parties distinctes (46) telles que des languettes. L'emplacement des parties distinctes des bandes mobiles sont détectées par des capteurs (60, 62). Les coupes terminales sont simultanément effectuées sur les nombreuses bandes empilées pour produire, à partir des bandes, des bardeaux de toiture séparés. Les mouvements des bandes sont commandés (82), sur la base des positions détectées des parties distinctes, pour que les coupes terminales des bardeaux de toiture soient positionnées à des endroits prédéfinis par rapport aux parties distinctes.

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