Hot runner injection molding machine
AssigneesNippondenso Co., Ltd., Chubu Sukegawa Enterprise Co., Ltd.
InventorsHiroshi Imaida, Tsujihiko Yasuda
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Abstract
A hot runner injection molding machine which injects a melt into a cavity formed by a front mold and a movable rear mold. The injection molding machine includes a runner device fixed to a fixed head, gate devices which form orifices through which the melt is injected into the cavity, and heaters for heating the gate devices and detachably attached to the runner device. The gate devices and the heaters can be changed in accordance with the type of molds to be used, without removing or dismantling the runner device, and therefore, the same runner device can be commonly used for different types of molds.
Claims20
A hot runner injection molding machine which injects a melt into a cavity formed by a front mold and a movable rear mold comprising:
- a fixed head, to which said front mold is detachably coupled;
- a runner device attached to said fixed head between said front mold and said fixed head, to provide a passage through which said melt is injected into said cavity;
- at least a gate means detachably coupled to said runner device, for providing an orifice through which said melt is injected into said cavity;
- and
- at least a heater means detachably coupled to said runner device for heating said gate means;
- wherein each of said gate means and said heater means include respective base portions fixed to said runner device, and respective end portions detachably connected to said respective base portions at a position adjacent to a face of the runner device that contacts said front mold.
- wherein at least said respective end portions protrude from said face of the runner device when said front mold is removed, whereby said respective end portions can be changed according to the type of front mold without removing said runner device from said fixed head.
Dependencies are inferred from the claim text.