A mould and method for the injection-moulding of an assembly for creating a closable fluid connection, and an assembly. The assembly comprises a female element (20) and a stopper (30) which is used to close off a bore (27) in the female element (20). The mould comprises a core with a core (2) with a
A mould and method for the injection-moulding of an assembly for creating a closable fluid connection, and an assembly. The assembly comprises a female element (20) and a stopper (30) which is used to close off a bore (27) in the female element (20). The mould comprises a core with a core (2) with a core body (3) and a head (4). Furthermore, the mould comprises a mould ring which is composed of a plurality of mould parts (10, 11) are designed in such a manner that the mould cavity for the stopper (30), is located at a distance from the mould cavity for the female element (20). The mould parts (10, 11) of the mould ring which lie around the core (2) together delimit an annular sealing surface (15), by means of which the mould ring, in a zone between the mould cavity for the stopper (30) and the mould cavity for the female element (20), bears in a sealing manner against the core (2) during the injection moulding, so that the mould cavities are completely separated from one another.
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The invention claimed is: 1. An assembly for creating a closable fluid connection to be used in combination with a male element, which assembly comprises a female element and a stopper, the female element having a body with a bore which extends through the body and with a seat, which extends around
The invention claimed is: 1. An assembly for creating a closable fluid connection to be used in combination with a male element, which assembly comprises a female element and a stopper, the female element having a body with a bore which extends through the body and with a seat, which extends around the bore, for the stopper, which stopper is located in the seat and is used to close off the bore, the stopper having a side which faces the female element and a circumference, the stopper being provided on the side which faces the female element and distributed around the circumference with first hook members each having only an outwardly directed hook surface and second hook members each having only an inwardly directed hook surface, the bore of the female element forming a shoulder, behind which the outwardly directed hook surfaces of said first hook members engage when the stopper is in its seat, and the inwardly directed hook surfaces of said second hook members being engageable on a shoulder of a male element which is to be fitted into the bore of the female element. 2. An assembly according to claim 1, in which the first and second hook members are arranged alternately around the circumference of the stopper. 3. A mould for the injection-moulding of an assembly according to claim 1 for creating a closable fluid connection, which assembly comprises a female element and a stopper, the female element having a body with a bore which extends through the body and with a seat, which extends around the bore, for the stopper, which is used to close off the bore, the mould comprising a core with a core body and a head which forms a free end of the core, the head of the core defining a part of the stopper, and the core body defining the bore in the female body, which mould furthermore comprises a mould ring composed of a plurality of mould parts, which mould parts can be moved apart in order for the assembly to be ejected after injection-moulding, the mould ring extending around the core and, together with the core, delimiting a mould cavity for the stopper and a mould cavity, which lies in line with the mould cavity for the stopper, for the female element, one or more first runners being provided in the mould for supplying plastic to the mould cavity for the stopper, wherein the core and the mould parts are designed in such a manner that the mould cavity for the stopper is situated at a distance from the mould cavity for the female element, and wherein the mould parts of the mould ring which lie around the core together delimit an annular sealing surface, by means of which the mould ring, in a zone between the mould cavity for the stopper and the mould cavity for the female element, bears in a sealing manner against the core during injection moulding, so that the mould cavities are completely separate from one another, and wherein one or more second runners are provided, which open out in the mould cavity for the female element. 4. Mould according to claim 3, in which the stopper has a cavity which is open on the side of the female element, substantially in line with the bore in the female element, and in which the head of the core defines the cavity in the stopper. 5. Mould according to claim 3, in which the mould ring comprises a first mould part and a second mould part, which each extend over 180° around the core and which together delimit the annular sealing surface by means of which the mould ring bears in a sealing manner against the core in a zone between the mould cavities during the injection moulding. 6. Mould according to claim 3, which comprises a mould part which delimits that wall of the mould cavity for the stopper which lies opposite the head of the core and also an adjoining annular mould-cavity wall, in accordance with an annular sealing surface of the stopper, which sealing surface, in the closed position of the assembly, bears against the annular seat of the female element. 7. Mould according to claim 3, in which the head of the core is designed in such a manner that, after the injection moulding, the stopper clamps onto the core, in such a manner that after the mould parts surrounding the core have been moved apart, the stopper can be pulled into the bore in the female element with the aid of the core. 8. Mould according to claim 3, in which the mould cavity for the stopper, on that side of the stopper which faces the female element, defines elastic hook members with inwardly and outwardly directed hook surfaces, the mould cavity for the female element forming a shoulder in the bore of the female element, behind which shoulder the outwardly directed hook surfaces engage when the stopper is in its seat, and in which the inwardly directed hook surfaces can engage on a shoulder of a male element which is to be fitted into the bore, the mould cavity for the stopper being such that one or more first hook members and one or more second hook members are formed on the stopper, distributed around the circumference, the first hook members each having an outwardly directed hook surface and the second hook members each having an inwardly directed hook surface. 9. A method for injection-moulding an assembly for creating a closable fluid connection, using a mould according to claim 3. 10. A method according to claim 9, in which a first plastics material is injected into the mould cavity for the stopper, and a second plastics material is injected into the mould cavity for the female element. 11. A method according to claim 10, in which the first plastics material, used for the stopper, after cooling has a different hardness from the second plastics material, used for the female element. 12. A method according to claim 9, in which the injection-moulding of the first and second plastics materials takes place substantially simultaneously. 13. A method for injection-moulding an assembly for creating a closable fluid connection using a mould according to claim 3, in which plastics material is only injected into one of the mould cavities, and no plastics material is injected into the other mould cavity. 14. Assembly for creating a fluid connection which is produced by injection-moulding using a mould according to claim 3. 15. An assembly for creating a closable fluid connection to be used in combination with a male element, which assembly comprises a female element and a stopper, the female element having a body with a bore which extends through the body and with a seat, which extends around the bore, for the stopper, which stopper is used to close off the bore, the stopper having a side which faces the female element and a circumference, the stopper being provided on the side which faces the female element and distributed around the circumference with first hook members each having only an outwardly directed hook surface and second hook members each having only an inwardly directed hook surface, the bore of the female element forming a shoulder, behind which the outwardly directed hook surfaces of said first hook members engage when the stopper is in its seat, and the inwardly directed hook surfaces of said second hook members being engageable on a shoulder of a male element which is to be fitted into the bore of the female element, further comprising a male element having a tube-shaped part which fits into the bore in the female element and is provided with an internal passage for the fluid, the male element having a head and a shoulder which lies behind the head, and the male element having a recess for accommodating the inwardly directed hook surfaces of the second hook members of the stopper. 16. An assembly according to claim 15, the assembly being designed in such a manner that the stopper is clear of the bore when the male element is fitted completely into the bore. 17. An assembly according to claim 15, in which the stopper projects part way into the bore when the male element has been fitted completely into the bore. 18. The assembly of claim 15, in which said first and second hook members are arranged alternately around the circumference of said stopper. 19. The assembly of claim 15, wherein said stopper comprises a cavity which is adapted to receive the head of the male element. 20. An assembly for creating a closable fluid connection to be used in combination with a male element, which assembly comprises a female element and a stopper, the female element having a body with a bore which extends through the body and with a seat, which extends around the bore, for the stopper, which stopper is used to close off the bore, the stopper having a side which faces the female element and a circumference, the stopper being provided on the side which faces the female element and distributed around the circumference with first hook members each having only an outwardly directed hook surface and second hook members each having only an inwardly directed hook surface, the bore of the female element forming a shoulder, behind which the outwardly directed hook surfaces of said first hook members engage when the stopper is in its seat, and the inwardly directed hook surfaces of said second hook members being engageable on a shoulder of a male element which is to be fitted into the bore of the female element, wherein the stopper is injection-moulded from a first plastic material, and wherein the female element is injection-moulded from a second plastic material, and wherein said first plastic material has a different hardness than said second plastic material.
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