Unipres Corporation

Katsuhisa Endoh

Masato Usami

Takafumi Endo

A strip-shape softened resin sheet (S) which is continuously extruded from a molten resin extruder is cut to a unit resin sheet and a press molded product is manufactured by press-molding the unit resin sheet in a press-molding machine. Prior to cutting the continuously extruded strip-shape softened resin sheet (S) to the unit resin sheet (U) , the slits C, C, C, Cand Cwhich promote the molding to the press molded part from the unit resin sheet (U) (improve an inflow property of the material) are formed by a cutter which is upwardly and downwardly driven by an air cylinder at a portion Pin which the material therein is out of a range of the press molded products Pand Pobtained by press-molding the press molded product by using the press molding machine and becomes a scrap. The inflow property of the resin material for vertical walls and embossment portions when press-molding is improved and the defects of the product can be prevented.

Continuous molding method and continuous molding apparatus of press molded product

A strip-shape softened resin sheet (S) which is continuously extruded from a molten resin extruder is cut to a unit resin sheet and a press molded product is manufactured by press-molding the unit resin sheet in a press-molding machine. Prior to press-molding the unit resin sheet (U) by the press-molding machine, the unit resin sheet (U) is heated by a heating machine. The heating machinecomprises a first heating furnaceand a second heating furnace. The first heating furnaceincludes a series of heaters-and-whose heat source is infrared ray in a far-infrared region and the second heating furnaceincludes a series of heaters-and-whose heat source is the infrared ray in a middle-infrared region. In the first furnace, the unit resin sheet (U) is continuously conveyed with a low velocity and is gradually heated by the far-infrared ray up to temperature which is slightly lower than the temperature which is suitable for press-molding the unit resin sheet (U). In the second furnace, the unit resin sheet (U) is stopped and is rapidly heated by the middle-infrared ray. By efficiently heating the unit resin sheet (U), a cycle time can be shortened and the production speed can be improved.

Continuous press-molding method and heating machine therefor

An undercover () for rectifying airflow under a floor of a vehicle while driving the vehicle includes screw pedestals () for fixing screws () or nut pedestals for nuts, which are served as fastening points to a vehicle body (). Interference caps () which are a molded product made from an elastic resin material are fitted between the adjacent pedestals. Under a state that the undercover () is engaged with and is attached to the vehicle body by the screws, a top portion () of the interference caps () is elastically deformed and is abutted to the opposite vehicle body surface, and the above abutment is maintained. Small clearance between the undercover and the vehicle body are maintained, and interference between the undercover and the vehicle due to vibration while driving is prevented, without changing the number of fastening points of the undercover to the vehicle body.

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Fuji, Japan

Katsuhisa Endoh