US 5,306,135 AGranted

Nozzle touch mechanism for injection press composite molding machine

AssigneeKabushiki Kaisha Komatsu Seisakusho

InventorHideaki Okubo

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Abstract

An improvement in an injection press composite molding machine, provides a nozzle touch mechanism in which even when the horizontal injection unit expands or contracts due to heat, the positional relation between the injection nozzle and the mold remains unchanged, and in which initial alignment of injection nozzle with the mold is easy, and further in which the thermal expansion or contraction thereof is small. An adjusting mechanism (40) for adjusting the position of an injection nozzle (10b) is provided on an upper portion of the stand (9) which presses the injection nozzle (10b) onto a lower mold (3). A positioning stopper (21) is provided for one end of a base (14) to which a table (4) of a horizontal injection unit (10) is journaled. The adjusting mechanism has a plurality of bolts for adjusting the vertical and horizontal positions of the injection nozzle. A heat insulating member may be interposed between the tips of these bolts and the injection nozzle.

Claims20

Dependent claims

In an injection press composite molding machine including:

a vertical press unit having a movable die plate adapted to support an upper mold, having a fixed die plate adapted to support a lower mold wherein the lower mold has a resin injection passageway therein extending from a resin injection opening in a bottom surface of the lower mold to a mold cavity formed by the lower mold and the upper mold, and being adapted to move the upper mold toward the lower mold to form a mold cavity therebetween and to move the upper mold away from the lower mold, the fixed die plate having an opening therethrough corresponding to the position of the resin injection opening of the lower mold;
a horizontal injection unit positioned below said fixed die plate and having an injection nozzle through which a melted resin can be supplied to the resin injection opening in the lower mold and then to the mold cavity formed by said upper and lower molds;
said lower mold having a contact portion surrounding the resin injection opening in said lower mold for receiving said injection nozzle;
said injection nozzle having a contact surface for mating with said contact portion;
a table on which said horizontal injection unit is mounted;
said table having a first end and a second end;
a base;
said first end of said table being rotatably supported on said base;
a stand positioned on said second end of said table;
and an actuator which supports said second end of said table and which can push said injection nozzle via said stand against said lower mold;
said base being horizontally slidable;
the improvement comprising a nozzle touch mechanism which comprises:
adjusting means provided on an upper portion of said stand and positioned between said stand and said injection nozzle for adjusting the vertical position of said injection nozzle and the horizontal position of said injection nozzle so that said contact surface of said injection nozzle aligns with said contact portion of said lower mold;
and
a positioning stopper which adjustably defines the position of said base.

12 more elements

In an injection press composite molding machine including:

a vertical press unit for opening and closing an upper mold and a lower mold wherein said upper mold and said lower mold form a mold cavity therebetween, said vertical press unit having a fixed die plate for supporting said lower mold and having a movable die plate for supporting said upper mold, a lower surface of said lower mold having a nozzle contact portion containing a resin-injection opening through which molten resin can be injected into said cavity, said resin-injection opening having a centerline, said fixed die plate having an opening therethrough corresponding to the position of the resin-injection opening of said lower mold;
a horizontal injection unit positioned below said fixed die plate and having an "L" shaped injection nozzle with an outlet portion of said "L" shaped injection nozzle having a contact surface for mating with said contact portion of said lower mold such that molten resin can be supplied through said injection nozzle and said resin-injection opening into said cavity, said outlet portion of said "L" shaped injection nozzle having a centerline;
a base, said base being horizontally slidable;
a table on which said horizontal injection unit is slidably mounted, said table having a first end and a second end, said first end of said table being pivotably mounted on said base;
a stand positioned on said second end of said table;
and
an actuator which supports said second end of said table and which can push said injection nozzle via said stand against said lower mold;
the improvement comprising a nozzle touch mechanism, said nozzle touch mechanism comprising:
adjusting means provided on an upper portion of said stand and positioned between said stand and said injection nozzle for adjusting the horizontal position of said injection nozzle and the vertical position of said injection nozzle so that the center line of the output portion of said injection nozzle aligns with the center line of said resin-injection opening.

6 more elements

Dependencies are inferred from the claim text.