METHOD AND DEVICE FOR EXREACTION OF PLASTIC PRODUCTS Russian patent published in 2009 - IPC B29C45/42 B29B11/08 B29C45/72 B29C49/42 

FIELD: technological processes.

SUBSTANCE: device and method are intended for extraction of plastic briquettes from appropriate holders in process of various moulding. Device is intended for extraction of plastic briquettes, which comprises the first part that defines briquette body having previously specified size in transverse direction, and the second part in the form of ring that is adjacent to the first one and has larger size in transverse direction compared to the first part. Device also comprises support structure, gripping facilities intended for extraction of manufactured briquettes from conditioning cavities arranged on revolver head. It comprises appropriate plate fixed to support structure and including gripping facilities that comprises multiple rectilinear slots installed parallel to one previously specified direction (D). Moreover, in each slot there are the first sections arranged, which have the first previously specified width (L1), and the second sections, in which local narrow spots are arranged, having the second previously set width (L2). The second previously set width (L2) is less than appropriate size of the second part of briquette in transverse direction, but is more than appropriate sizes of the first part of briquette. Besides, the first width (L1) provides for possibility of briquettes insertion in slot with their second part, and the second width (L2) does not make it possible to insert the briquettes with their second part in slot. Moreover, according control and working means are provided that make it possible for the plate to move in direction (D) for the previously specified distance. Briquettes are gripped by plate and are extracted from conditioning cavities by means of reciprocal motion of plate and conditioning cavities in opposite sides from each other. Each slot comprises wider sections and local narrow spots, width of which (L2) is less than diametre of ring available on briquette, which makes it possible to insert the ring into slot, passing it through wider section of slot. Plate is moved in direction "D" by a certain value until local narrow spots are located under the ring, and therefore afterwards briquettes are removed by means of plate displacement in direction, in which it is diverged away from holders.

EFFECT: production of device that is simple and reliable in operation, achievement of high efficiency levels during operation of plant for injection moulding, economic efficiency in manufacturing, control and maintenance.

11 cl, 39 dwg