Abstract:
The present invention discloses an apparatus for producing a pressure vessel blank (2) comprising at least one connection element (7), the apparatus having the following features: - the apparatus comprises a multi-part blow-moulding tool with at least two blow-mould halves (10), which in each case have a partial cavity (11) and between which a tubular preform (9) consisting of thermoplastic material can be positioned in an open position of the blow-mould halves (10); - the blow-mould halves (10) can be made to move between an open position, in which the blow-mould halves (10) are apart from one another, and a closed position, in which the blow-mould halves (10) are in contact with one another, the partial cavities (11) forming in the closed position a mould impression in which the preform (9) can be moulded to form the pressure vessel blank (2) by means of applying differential pressure; - the apparatus comprises at least one blowing pin (20), which has a gas outlet opening (22), arranged in an end portion (21) of the blowing pin (20), for discharging a gas and a holding device (26) for releasably holding the connection element (7), the end portion (21) of the blowing pin (20) being insertable into a through-passage (7a) of the connection element (7); and - the blowing pin (20) can be positioned between the blow-mould halves (10), so that in the closed position of the blow-mould halves (10) the preform (9) positioned between them can be moulded in the mould impression while being brought to bear against the connection element (7) by application of gas pressure by way of the gas outlet opening (22). The apparatus is characterized in that the blowing pin (20) has a fluid outlet (23), arranged in the end portion (21), for discharging a cooling fluid and a fluid inlet (24), arranged in the end portion (21), for receiving the cooling fluid, and in that the fluid outlet (23) and the fluid inlet (24) are in fluidic connection with one another, so that the through- passage (7a) of a connection element (7) held by the blowing pin (20) can be brought directly into contact with the cooling fluid and a cooling fluid circulation can be produced in the through-passage (7a) of the connection element (7).
Abstract:
Die Erfindung betrifft einen Kraftstoffbehälter (2) aus Kunststoff mit diversen in diesem enthaltenen Funktionsbauteilen zur Gewährleistung von Funktionen wie Betriebsentlüftung, Betankung, Betankungsentlüftung, Kraftstoffentnahme etc. Die Funktionsbauteile sind auf einem Träger (1) vormontiert, der mit diesen bestückt in den Behälter eingesetzt wurde oder bereits bei der Ausformung des Behälters in diesen integriert wurde. Der Kraftstoffbehälter (2) zeichnet sich dadurch aus, dass der Funktionsbauteil-Träger (1) als kraftstoffdurchflutbarer Hohlkörper ausgebildet ist.