DOOR FRAME MOULD Russian patent published in 2011 - IPC B27N3/20 E06B3/70 

FIELD: process engineering.

SUBSTANCE: invention relates to mould for producing door frames with openings intended for paneling or glassing. Frames are made from conglomerate of wood particles and glue arranged in layers to produce sandwich structure with its outer layers made from smaller-size particles with higher density relative to inner layer that features greater thickness and is made from larger particles. Material is fed from moulding machine to fill moulds and compacted between two heating plates of the mould. Mould comprises stationary perimetric frame that follows the door frame outline or that of its several surfaces to produce simultaneously several door frames and separated them by cutting. Note here that perimetric frame height exceeds thickness of door frame before compaction. Mould bottom horizontal platform may move vertically and be driven hydraulically. First rectangular frame made integral with said platform rests thereon. Frame sizes comply with those of perimetric frame opening. Said frame may slide in perimetric frame inner part like a plunger. Mould first rectangular frame surface incorporates so many openings as many door frames may be moulded at a time. Besides, mould is made up of one or more independent second rectangular frame arranged to perform telescopic displacement inside every opening of first rectangular fame and make remaining surface of door frame with its relevant openings. Note also that they may be driven by hydraulic cylinders and feature the height of the first rectangular door frame. Mould top plate may move vertically and doubles as heating plate driven by hydraulic drive in mould closing on placing in contact with stationary peripheral plate.

EFFECT: reduced wastes, ruling out machining and higher rigidity of peripheral zone.

28 cl, 30 dwg