Decompression sprue bush and decompression machine nozzle
AssigneeMHT Mold & Hotrunner Technology AG
InventorsWolfgang Puest, Matthias Brinzing
Life of this patent
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Abstract
The present invention concerns a transfer element (1, 9) for an injection molding system comprising a flow lumen for a plasticised plastic material. To provide a transfer element for an injection molding system, which makes it possible to further increase the material throughput of the injection molding system without having to tolerate increased wear of seals and other system components, it is proposed in accordance with the invention that it has a device for degassing of the flow lumen.
Claims17
A transfer element (1, 9) for an injection molding system comprising a flow lumen (18) for a plasticised plastic material, wherein the transfer element has a device for degassing of the flow lumen (18);
- wherein, the transfer element has a substantially hollow-cylindrical main body (4, 9) having an inner peripheral surface (6) and an outer peripheral surface (5), wherein the degassing device has at least one gas-permeable passage connecting the inner peripheral surface (6) and the outer peripheral surface (5);
- wherein, the main body (4, 9) is at least of a two-part structure comprising an upper part (4a, 4a′, 4a″, 9a) and a lower part (4b, 4b′, 4b″, 9b) which are substantially hollow-cylindrical and each have at least one main face (16, 18);
- wherein, the upper part (4a) and the lower part (4b) are so arranged that there main faces (16, 18) at least partially butt against each other, wherein the main face (16) of the upper part (4a, 4a′, 4a″, 9a) and/or the lower part (4b, 4b′, 4b″, 9b) has a free-ground clearance (17, 19, 19′, 19″) so that at least one gap is formed between the main faces (16, 18) which at least as a portion of a gas-permeable passage connects the inner peripheral surface (6) and the outer peripheral surface (5) of the main body (4, 9).
Dependencies are inferred from the claim text.