Mold for injection molding and injection molding system
AssigneeSeiko Epson Corporation
InventorsHiroki Takano, Seijun Horie
Life of this patent
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Abstract
A mold for injection molding includes a first mold where a gate opening is formed and a second mold moving due to mold opening in a mold opening direction, wherein the second mold includes a third mold, a fourth mold arranged between the third mold and the first mold in the mold opening direction, and a fifth mold arranged between the fourth mold and the first mold in the mold opening direction, the third mold and the fourth mold forming the cavity, the fourth mold having a passage, the fifth mold having a first penetration hole, the first mold has a recess at a surface facing the second mold, the fifth mold is arranged in the recess when mold closing is performed, and a groove penetrating the mold downward in the vertical direction is formed.
Claims8
A mold for injection molding which has a plurality of molds and in which a cavity prescribing a shape of a product is formed, the mold for injection molding comprising:
- a first mold where a gate opening through which a molding material flows in is formed;
- and
- a second mold that moves due to mold opening in a mold opening direction which is a direction away from the first mold and perpendicular to a vertical direction, wherein the second mold includes
- a third mold,
- a fourth mold arranged between the third mold and the first mold in the mold opening direction, and
- a fifth mold arranged between the fourth mold and the first mold in the mold opening direction,
- the third mold and the fourth mold forming the cavity, the fourth mold having a passage through which the molding material passes from the gate opening toward the cavity,
- the fifth mold having a first penetration hole through which the molding material passes from the gate opening toward the passage,
- the first mold has a recess at a surface facing the second mold, the fifth mold is arranged in the recess when mold closing is performed,
- a space is formed between the third mold and the fourth mold, between the fourth mold and the fifth mold, between the fifth mold and the first mold, and between the fourth mold and the first mold in the mold opening direction by the mold opening, and a groove penetrating the mold downward in the vertical direction is formed at least at one of an opposite surface of at least one of the third mold and the fourth mold, an opposite surface of at least one of the fourth mold and the fifth mold, an opposite surface of at least one of the fifth mold and the first mold, and an opposite surface of at least one of the fourth mold and the first mold,
- wherein the groove has a shape increasing in width in a direction perpendicular to the vertical direction and the mold opening direction as it goes downward in the vertical direction, and the groove has
- a first part, and
- a second part located below the first part, and a depth of the first part in the mold opening direction is shallower than a depth of the second part in the mold opening direction.
Dependencies are inferred from the claim text.