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US 12,097,650 B2Granted
Multi-mold systems using a runner
AssigneesCanon Virginia, Inc., Canon U.S.A., Inc.
InventorsKoki Kodaira, Yuichi Yanahara, Junko Tajima
Life of this patent
Estimating the term…
Abstract
A runner for supplying resin to a cavity includes a sprue that is supplied resin from a nozzle of an injection molding machine, a first path formed in the runner, where the resin flows in the first path from the nozzle when the nozzle connects to the sprue, a first pin that moves to a first position to increase the size of the first path before the resin is supplied to the first path and moves to a second position to decrease the size of the first path before the nozzle separates from the sprue.
Claims11
A mold comprising:
- a first mold part and a second mold part, wherein the first mold part has a first surface and a second surface, wherein the second mold part has a third surface, wherein the first surface of the first mold part has an opening, and wherein the first mold part and the second mold part form a cavity when the second surface and the third surface contact each other;
- a sprue formed in the first mold part, wherein the sprue is configured to receive, via the opening, a flow of resin from a nozzle of an injection molding machine;
- a runner formed in the first mold part, wherein the runner includes a first path, and wherein the sprue and the cavity are in fluid communication via the first path;
- a first pin configured to move to a first position to decrease a size of the first path and to move to a second position to increase the size of the first path, wherein the first pin includes a proximal portion and a distal portion, wherein the proximal portion is closer to the opening than the distal portion;
- and
- a plurality of surfaces that define a space,
- wherein the distal portion of the first pin moves within the space, and
- wherein, when the first pin moves from the second position to the first position, the first pin moves in a first direction and a first surface of the plurality of surfaces stops the movement of the first pin in the first direction.
5 more elements
A manufacturing method comprising:
- conveying a mold to a first position, wherein the mold includes
- a first mold part and a second mold part, wherein the first mold part has a first surface and a second surface, wherein the second mold part has a third surface, wherein the first surface of the first mold part has an opening, and wherein the first mold part and the second mold part form a cavity when the second surface and the third surface contact each other,
- a sprue formed in the first mold part, wherein the sprue is configured to receive, via the opening, a flow of resin from a nozzle of an injection molding machine,
- a runner formed in the first mold part, wherein the runner includes a first path, and wherein the sprue and the cavity are in fluid communication via the first path,
- a first pin configured to move to a first position to decrease a size of the first path and to move to a second position to increase the size of the first path, wherein the first pin includes a proximal portion and a distal portion, wherein the proximal portion is closer to the opening than the distal portion, and
- a plurality of surfaces that define a space,
- wherein the distal portion of the first pin moves within the space, and
- wherein, when the first pin moves from the second position to the first position, the first pin moves in a first direction and a first surface of the plurality of surfaces stops the movement of the first pin in the first direction;
- and
- injecting resin into the cavity via the opening, the sprue, and the runner.
7 more elements
Dependencies are inferred from the claim text.