B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 17/00 (2006.01) B29B 17/04 (2006.01) B29C 47/58 (2006.01)
Patent
CA 2217228
Disclosed is an apparatus for reprocessing thermoplastic synthetic plastic material, the apparatus comprising a receptacle for the synthetic plastic material to be processed, the receptacle having at least one rotating tool which conveys the synthetic plastic material through a discharge opening of the receptacle such that a component of a stuffing force is exerted on the synthetic plastic material in the axial direction of this discharging opening and transmitted thereto always by synthetic plastic material subsequently being pressed in, the discharge opening leading to an inlet opening for the synthetic plastic material arranged in a side wall of a screw housing of a screw, wherein the interior surface of the screw housing of the screw in the area of the inlet opening has a pocket-like enlargement, which provides an additional space to accommodate synthetic plastic material and which is confined by an adjustable wall piece on that edge of the inlet opening on which the direction of rotation of the screw is directed towards the receptacle, the wall piece allowing the enlargement to be at least partially closed off from the receptacle, wherein the enlargement gives way to several grooves at least in the area of the screw housing adjoining it in the transport direction of the screw, and wherein the grooves are of a depth which decreases to the screw diameter in this area, and in which the grooves are separated from each other in this area by rigid ribs projecting toward the screw relative to the wall of the enlargement of the screw housing, each of these grooves providing a space for the synthetic plastic material, the longitudinal direction of which space having a substantial component extending in the axial direction of the screw.
L'invention concerne un dispositif de préparation de matières thermoplastiques comportant un récipient (1) contenant la matière plastique, qui abrite un outil tournant (4), lequel presse la matière plastique du récipient (1) vers l'orifice d'entrée ménagé dans la paroi latérale du carter (12) d'une vis sans fin (13). Le carter (12) de la vis (13) présente dans la zone de l'orifice d'entrée (11) un élargissement en forme de poche (22) qui constitue un espace supplémentaire pour la matière plastique compressée. A chaque bord de l'orifice d'entrée (11) où la vitesse de rotation de la vis (13) est orientée vers le récipient (1), l'élargissement (22) est limité par une paroi (23). Dans la région adjacente du carter de la vis (12), l'élargissement (22) aboutit à des rainures (28) dont la profondeur se réduit jusqu'à atteindre le diamètre de la vis et qui sont séparées par des nervures (29) rigides présentes depuis la paroi de l'élargissement (22) jusqu'à la vis (13). Chacune de ces rainures (28) constitue un espace pour la matière plastique, dont le sens longitudinal est sensiblement dans l'axe de la vis (13).
Bacher Helmut
Schulz Helmuth
Wendelin Georg
Bacher Helmut
Marks & Clerk
Schulz Helmuth
Wendelin Georg
LandOfFree
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