Blow Moulding Machine For The Moulding Of Containers
Blow Moulding Machine For The Moulding Of Containers
A blow moulding machine for the manufacture of containers based on preforms, includes at least one rotating turntable furnished with a console supporting two half-moulds that are designed to form the body of the container and a mould base that is designed to form the bottom of the container, of the type in which the mould base is driven so as to slide vertically by a cam system, characterized in that the console includes at least one return member that forces the mould base towards its top position, and in that the cam system includes a cam follower element that is slidingly connected to the mould base and that interacts with a control surface oriented downwards.
The present invention relates more particularly to a blow moulding machine for the blow moulding machinery of containers based on preforms made of thermoplastic by blow moulding machines or stretch- blow moulding, comprising at least one plate that is mounted so as to rotate about a substantially vertical axis and that supports at least one console, of the type in which the console supports two half- moulds that are designed to form the body of the container and a mould base that is designed to form the bottom of the container, of the type in which the two half- moulds are mounted so as to be movable relative to one another between a closed position suitable for moulding and an open position suitable for stripping and loading a preform, of the type in which the mould base is driven so as to slide relative to the console, in a sliding direction substantially parallel to the axis of rotation, by a cam system between a top position suitable for moulding and a bottom position suitable for stripping, and of the type in which the mould base is designed to be nested in the half- moulds when it occupies its top position and when the half- moulds occupy their closed position.
For blow moulding or stretch- blow moulding containers such as bottles based on heated preforms made of thermoplastic such as polyethylene terephthalate (PET), it is a known practice to use moulds consisting of two half- moulds that can be moved relative to one another.
The half- moulds can be moved between an open position that corresponds to an operation of loading the mould with a preform or to an operation of stripping the mould by removing the bottle obtained by the moulding operation, and a closed position that corresponds to a moulding operation.
A blow moulding machine for the manufacture of containers based on preforms, includes at least one rotating turntable furnished with a console supporting two half-moulds that are designed to form the body of the container and a mould base that is designed to form the bottom of the container, of the type in which the mould base is driven so as to slide vertically by a cam system, characterized in that the console includes at least one return member that forces the mould base towards its top position, and in that the cam system includes a cam follower element that is slidingly connected to the mould base and that interacts with a control surface oriented downwards.
The present invention relates more particularly to a blow moulding machine for the blow moulding machinery of containers based on preforms made of thermoplastic by blow moulding machines or stretch- blow moulding, comprising at least one plate that is mounted so as to rotate about a substantially vertical axis and that supports at least one console, of the type in which the console supports two half- moulds that are designed to form the body of the container and a mould base that is designed to form the bottom of the container, of the type in which the two half- moulds are mounted so as to be movable relative to one another between a closed position suitable for moulding and an open position suitable for stripping and loading a preform, of the type in which the mould base is driven so as to slide relative to the console, in a sliding direction substantially parallel to the axis of rotation, by a cam system between a top position suitable for moulding and a bottom position suitable for stripping, and of the type in which the mould base is designed to be nested in the half- moulds when it occupies its top position and when the half- moulds occupy their closed position.
For blow moulding or stretch- blow moulding containers such as bottles based on heated preforms made of thermoplastic such as polyethylene terephthalate (PET), it is a known practice to use moulds consisting of two half- moulds that can be moved relative to one another.
The half- moulds can be moved between an open position that corresponds to an operation of loading the mould with a preform or to an operation of stripping the mould by removing the bottle obtained by the moulding operation, and a closed position that corresponds to a moulding operation.