Method and device for folding back an unvulcanised blank

Method and device for folding back an unvulcanised blank

The method involves attaching blanks (4) on an inner tool (1), which is formed as a partial hollow inner sleeve (5) and as a bolt (2) provided with a control element. An outer tool i.e. hollow cylinder (8), is processed during folding of the blanks relatively and coaxially to the inner tool in direc...

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1. Verfasser: Warthemann, Jens
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
PERFORMING OPERATIONS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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creator Warthemann, Jens
description The method involves attaching blanks (4) on an inner tool (1), which is formed as a partial hollow inner sleeve (5) and as a bolt (2) provided with a control element. An outer tool i.e. hollow cylinder (8), is processed during folding of the blanks relatively and coaxially to the inner tool in direction of non expanded ends of the blanks until the entire expanded area of the blanks is gradually folded. Folding of the blanks is produced by a discontinuity in an outer contour of the inner tool, and blanks are retained on the inner tool during the folding. An independent claim is also included for a device for folding unvulcanized blank of air spring-rolling bellow.
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language eng ; fre ; ger
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subjects PERFORMING OPERATIONS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
title Method and device for folding back an unvulcanised blank
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