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US 9,573,309 B2Granted
System for feeding molten resin and method of feeding molten resin
AssigneeToyo Seikan Group Holdings, Ltd.
InventorsNorihisa Hirota, Yutaka Asano, Toshifusa Azuma
Life of this patent
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Abstract
To efficiently feed a molten resin to the resin holders. An intermittently feeding device works to intermittently feed a transfer unit equipped with resin holders, and has a cam supported by a motor via a support. The cam is rotated by the motor. A cam follower of a moving block meshes with the screw of the cam, and the moving block moves along a support rail accompanying the turn of the cam. The motor rotates at a constant speed, and the transfer unit 3 is fed intermittently depending on the shapes of the cam and of the cam follower.
Claims2
A system for feeding a molten resin, comprising:
- an extruder for extruding the molten resin through an extrusion port;
- resin holders for receiving the molten resin from said extrusion port;
- transfer units equipped with a plurality of said resin holders;
- and
- compression forming apparatuses having a plurality of metal molds;
- intermittently feeding devices which vary the moving speed of said transfer units at a moment when said resin holder receives the molten resin;
- said intermittently feeding devices configured to feed said transfer units at a feed speed which is zero or is slowed down at a position where said resin holder receives the molten resin so that the molten resin is continually and successively fed into said resin holders from said extrusion port;
- the metal molds are disposed in a plurality of rows in said compression forming apparatuses;
- said transfer units include a file-off mechanism for filing off said resin holders from a state of one row to a plurality of rows, the file-off mechanism aligning said resin holders in one row at the molten resin extrusion port and filing off said resin holders to a plurality of rows to meet the positions of the metal molds at the time of feeding the molten resin to the metal molds;
- conveyer devices for moving said transfer units straight to said metal molds;
- and
- change-over devices for changing over said intermittently feeding devices and said conveyer devices for said transfer units.
9 more elements
Dependencies are inferred from the claim text.