Fluid injecting nozzle having spaced projections
First Claim
1. A nozzle for transporting molten material to a cavity in a mold through an opening in the mold, including,a nozzle body,there being a runner in the nozzle body for the introduction of the molten material into the nozzle body,there being an orifice in the nozzle body in communication with the runner in the nozzle body,a heat insulating cap on the nozzle body, the heat insulating cap having a gate well communicating with the orifice in the nozzle body for the flow of the molten material through the orifice and the gate well,the heat insulating cap being constructed to provide a shearing of the article from the mold with a smooth surface at the shearing position after the solidification of the article in the mold,first means extending between the nozzle body and the cap for aligning the nozzle body and the cap to provide for the communication between the gate well in the cap and the orifice in the nozzle body,the heat insulating cap has a side wall and a bottom wall,second means extending from the cap to the mold at spaced positions around the periphery of the cap to position the cap relative to the mold and to provide for a maximal heat in the molten material flowing through the passage into the cavity in the mold, andmeans for heating the molten material in the passage.
1 Assignment
0 Petitions
Accused Products
Abstract
A nozzle body is provided that is equipped with a runner, passages and orifices all communicating with one another to provide a fluid delivery system to mold cavities. The nozzle body is provided with a heat insulating cap equipped with peripheral projections at spaced positions around the outside wall of the cap so that the fluid injected into the mold at the gatewell will shear with a smooth cleavage after solidifying to provide a smooth separation surface on the molded part. Each gatewell is disposed in a peripheral projection in the cap and the peripheral projection is spaced of few thousandths from the mold. The cap serves to minimize the loss of heat from the nozzle body by aligning and centering the cap and the nozzle body relative to the gatewells leading to the mold.
51 Citations
33 Claims
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1. A nozzle for transporting molten material to a cavity in a mold through an opening in the mold, including,
a nozzle body, there being a runner in the nozzle body for the introduction of the molten material into the nozzle body, there being an orifice in the nozzle body in communication with the runner in the nozzle body, a heat insulating cap on the nozzle body, the heat insulating cap having a gate well communicating with the orifice in the nozzle body for the flow of the molten material through the orifice and the gate well, the heat insulating cap being constructed to provide a shearing of the article from the mold with a smooth surface at the shearing position after the solidification of the article in the mold, first means extending between the nozzle body and the cap for aligning the nozzle body and the cap to provide for the communication between the gate well in the cap and the orifice in the nozzle body, the heat insulating cap has a side wall and a bottom wall, second means extending from the cap to the mold at spaced positions around the periphery of the cap to position the cap relative to the mold and to provide for a maximal heat in the molten material flowing through the passage into the cavity in the mold, and means for heating the molten material in the passage.
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9. A nozzle for transporting molten material to a cavity in a mold through an opening in the mold, including,
a nozzle body, a runner in the nozzle body, there being a passage in the nozzle body in communication with the runner, there being an orifice in the nozzle body in communication with the passage, first means disposed on the nozzle body for introducing heat into the nozzle body, second means disposed in the nozzle body for directing to the passage the heat introduced into the nozzle body, and heat insulating means disposed on the nozzle body and including a gate well in communication with the orifice in the nozzle body for passing the molten material from the orifice in the nozzle body to the opening in the mold, the heat insulating means being constructed and disposed relative to the mold for providing a communication of the molten material between the nozzle body and the mold substantially only through the gate well in the heat insulating means and the opening in the mold to provide for a shearing of the article in the mold from the nozzle body, after solidification of the molten material, at substantially only the gate well in the heat insulating means, the heat insulating means including at least one projection extending from the heat insulating means to a position in contiguous relationship with the mold for passing the molten material through the nozzle body and the passage into the projection in the heat insulating means and for maintaining the heat insulating means in abutting relationship with the mold when the projection becomes heated by the molten material.
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14. A nozzle for transporting molten material to a cavity in a mold through an opening in the mold, including,
a nozzle body, a runner in the nozzle body, there being a passage in the nozzle body in communication with the runner, there being in the nozzle body an orifice in communication with the passage, first means disposed on the nozzle body for introducing heat into the nozzle body, second means disposed in the nozzle body for directing to the passage the heat introduced into the nozzle body, heat insulating means disposed on the nozzle body and including a gate well in communication with the orifice in the nozzle body for passing the fluid from the nozzle body to the orifice in the mold, the heat insulating means being constructed and disposed relative to the mold for providing a communication of the fluid between the cap and the mold substantially only through the gate well in the heat insulating means and the orifice in the mold to provide for a shearing of the article in the mold, after solidification, from the nozzle body at substantially only the gate well in the heat insulating means, and a plurality of third means disposed on the heat insulating means and extending from the heat insulating means in a first particular direction for aligning the nozzle body and the heat insulating means to provide for the communication between the orifice in the nozzle body, the gate well in the heat insulating means and the opening in the mold, and fourth means disposed on the heat insulating means and extending from the heat insulating means toward the mold at spaced positions around the heat insulating means in a second particular direction transverse to the first particular direction for aligning the heat insulating means relative to the mold with the heat insulating body spaced from the mold in the second particular direction except at the positions of the fourth means.
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24. A nozzle for transporting molten material to a cavity in a mold through an opening in the mold, including,
a nozzle body, there being a runner in the nozzle body, means for applying heat to the nozzle body, there being an orifice in the nozzle body in communication with the runner in the nozzle body and in communication with the opening in the mold, a plug extending through the nozzle body to heat the molten material in the runner, the plug being made from a heat conductive material, and a cap made from a heat insulating material, the cap being disposed on the nozzle body at the end opposite the runner and being provided with a gate well in communication with the orifice, the gate well being disposed in the cap to inject into the opening in the mold the molten material flowing through the gate well, means disposed at the end of the cap opposite the runner for disposing the gate well in communication with the orifice, the cap being provided with a side wall for enveloping the nozzle body, and at least one projection extending from the cap for positioning the cap relative to the mold to provide the communication between the gate well and the orifice and to provide for the passage of heat from the plug through the passage in the nozzle body while minimizing the passage of heat from the cap.
Specification