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1. 发明申请

WO2018167561A1 MOULDING MACHINE FOR THERMOPLASTIC SHEETS 审中-公开
公开(公告)号：WO2018167561A1
公开(公告)日：2018-09-20
申请号：PCT/IB2018/000272
申请日：2018-03-15
申请人： COMI S.P.A.
发明人： DOMENGHINI, Michelle
IPC分类号： B29C51/08 , B29C51/20 , B29C51/26 , B29C51/30 , B29C51/42 , B29K55/02 , B29K23/00 , B29K25/00 , B29L31/00
摘要： A moulding machine for thermoplastic sheets (L) comprises a pair of overlapping upper (3) and lower (5) reduction means, movable at least with respect to each other by means of respective moving means, and provided with respective upper (7) and lower (9) protruding edges having identical or almost identical respective planforms, where in a condition of maximum mutual approaching, they are assigned to tighten a perimetric portion of a sheet, thus blocking it. The machine (1) comprises a mould means (13) having a base means (15) bearing a plurality of shape means (17, 19), underlying and facing said reduction means (3, 5), and vertical moving means assigned to bring said base means (15) near to the lower reduction means (5), up to a condition of mutual matching, and to move the mould away up to a condition of maximum distance so as to allow the insertion of the sheet between the upper (3) and lower (5) reduction means, removed from each other. The mould means (13) is provided with sets of sliding means (25) and actuator means (27), respectively designed for the sliding of at least one of the two adjacent shape means (17, 19) towards the other (19, 17), and for the translating of such at least one of the shape means (17, 19) so as to draw near to, or away from, the other (19, 17). In an initial operative condition, wherein the upper (3) and lower (5) reduction means tighten the perimeter of a softened sheet, and the mould means (13) is in its condition of maximum distance, the actuator means (27) set the shape means (17, 19) at their maximum mutual distance, and the vertical moving means bring said base means (15) near to the lower reduction means (5) up to their mutual matching, resulting in the matching of the softened sheet with the surfaces of the shape means (17, 19), whereby the latter are then set at their minimum distance from each other by the actuator means (27).

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