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1. 发明授权

US4522669A Combination mould portion and protective element for pipe 失效
标题翻译：组合模具部分和管道保护元件
公开(公告)号：US4522669A
公开(公告)日：1985-06-11
申请号：US413823
申请日：1982-09-01
申请人： Olof Nordin , Soren Forsberg
发明人： Olof Nordin , Soren Forsberg
IPC分类号： B28B21/56 , B28B21/76 , B29C39/10 , F16L21/03 , B29D27/00 , B28B7/20 , B29C17/02 , B65H69/02
CPC分类号： F16L21/03 , B28B21/563 , B28B21/76 , B29C39/10 , Y10S264/04 , Y10T156/1038
摘要： A mould portion and/or protective element of the type consisting of a material subjected to deformation is disclosed. A method and a device for manufacturing such a mould portion and/or protective element are also disclosed.The mould portion and/or protective element is preferably intended to be used as a mould portion in moulding an article and/or as a protective element to prevent access of soil and water to a surface portion of the article during transportation and storage thereof.Such materials subjected to dimensional changes as can be used as mould portions and/or protective elements present the advantages of being inexpensive and permitting removal of the article without difficulty. One such material is for example cellular plastics. The dimensional changes, however, have entailed so great difficulties in using mould portions and/or protective elements of such materials that they have made the use of the material impossible.To eliminate the above mentioned disadvantage the mould portion and/or protective element of a material subjected to dimensional changes is manufactured with the desired dimensions, starting from at least one blank, immediately before the mould portion and/or protective element is used to mould the article or join the mould portion and/or protective element to the article to protect the surface portion thereof. Alternatively, the mould portion and/or protective element of a material subjected to dimensional changes is manufactured with the desired dimensions, starting from at least one blank after the blank has reached dimensional stability.
摘要翻译：公开了由受到变形的材料构成的类型的模具部分和/或保护元件。还公开了一种用于制造这种模具部分和/或保护元件的方法和装置。模具部分和/或保护元件优选地用于模制制品和/或作为保护元件的模具部分，以防止在输送和储存期间将土壤和水进入制品的表面部分。作为可用作模具部分和/或保护元件的尺寸变化的这种材料具有便宜并且容易地取出制品的优点。一种这样的材料是例如细胞塑料。然而，尺寸变化在使用这些材料的模具部分和/或保护元件方面带来了如此巨大的困难，使得它们不可能使用该材料。为了消除上述缺点，在模具部分和/或保护元件用于模制之前，立即从尺寸变化的材料的模具部分和/或保护元件以至少一个坯料开始以期望的尺寸制造制品或将模具部分和/或保护元件接合到制品上以保护其表面部分。或者，经过尺寸变化的材料的模具部分和/或保护元件以所需的尺寸制造，从坯件达到尺寸稳定性之后的至少一个坯料开始。

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