초록 ▼

A mould (10) for the injection moulding of hollow products (1) or products with recesses and made from a plastic which quickly expands after removal from the mould, has two mould parts (12, 14) and a one-piece core (18) surrounded thereby. The core (18) within the mould rests with an extension (20)

A mould (10) for the injection moulding of hollow products (1) or products with recesses and made from a plastic which quickly expands after removal from the mould, has two mould parts (12, 14) and a one-piece core (18) surrounded thereby. The core (18) within the mould rests with an extension (20) against both mould parts (12, 14). This extension (20) is movably supported on a guide column (22, 24) to be removed from the respective mould parts (12, 14) upon opening of the mould. A compression spring (28, 30) is provided in one of the mould parts (12, 14) which is supported against the mould part (12 or 14) and the core (18).

대표청구항 ▼

1. Mould for moulding hollow products or products with recesses and made from a material which quickly expands after removal from the mould, comprising a pair of mould parts and a one-piece core surrounded thereby, wherein the mould parts and the core define a mould cavity provided with filling chan

1. Mould for moulding hollow products or products with recesses and made from a material which quickly expands after removal from the mould, comprising a pair of mould parts and a one-piece core surrounded thereby, wherein the mould parts and the core define a mould cavity provided with filling channels for injection of the moulding material, the core having an extension for engaging both mould parts, the extension being movably mounted on a guide column for movement out of the respective mould part when the mould is opened, and a compression spring being positioned in one of the mould parts and supported on the other mould part and the core.