Abstract:
The present invention relates to a molding system (100) including (but not limited to): (i) an electrically chargeable conduit (102), and (ii) an electrical-charge source (104) configured to provide an electrical charge to the electrically-chargeable conduit (102), the electrical charge hastening flow of a resin (106) along the electrically-chargeable conduit (102).
Abstract:
A hot runner system includes a having a cavity (18). Melt is fed from a source of melt into the cavity (18), and a valve (24) isolates melt in the cavity (18) from melt in the source. A plunger (34) within the cavity (18) is driven forward to inject melt in the cavity (18) into a mold cavity (26) at high pressure without significantly increasing the pressure of melt in the source. The plunger (34) optionally functions as both the plunger (34) and the valve (24) by opening and closing communication between the cavity (18) and the manifold (16) as it is rotated.
Abstract:
The invention relates to a device for encapsulating an electronic component, in particular a semiconductor, mounted on a carrier, comprising: an upper and a lower mould part, which mould parts are displaceable relative to each other between an encapsulating position in which the mould parts take a position enclosing at least one carrier between the mould parts and, connecting onto the enclosed carrier, defining at least one mould cavity, and an opened position in which the mould parts are situated at a greater mutual distance than in the encapsulating position, a holder member displaceable between the mould parts for urging at least an edge part of the carrier against one of the mould parts in the encapsulating position, and supply means for feeding liquid moulding material to the mould cavity. The invention also relates to a method for encapsulating an electronic component mounted on a carrier.
Abstract:
Disclosed is a hot runner (100), including: a first plate (102) having a first-plate alloy; a second plate (104) having a second-plate alloy, the second plate (104) being coupled with the first plate (102), and the second plate (104) and the first plate (102) defining a manifold pocket (213); a manifold (224) being supportively received in the manifold pocket (213), and the manifold (224) having a drop (225); a nozzle assembly (400) being supportively received by the second plate (104), the nozzle assembly (400) connecting with the drop (225) of the manifold (224); and a nozzle-support structure (101), including: a first load-bearing insert (207) contacting the second plate (104), the first load-bearing insert (207) contacting the nozzle assembly (400), the first load-bearing insert (207) having a first insert material being stronger than the second-plate alloy of the second plate (104), the first insert material being strong enough to withstand a first high-point load (150) to be transmitted from the nozzle assembly (400) to the second plate (104) via the first load-bearing insert (207), and the second-plate alloy of the second plate (104) withstands transmission of the first high-point load (150) once the first load-bearing insert (207) distributes the first high-point load (150) to the second plate (104).
Abstract:
Injection molding apparatus has upper and lower mold halves that split along the center line of the parison cavity and the gate passage leading thereto. Each hot melt injection nozzle is received within a tubular insert cup having a reduced diameter tip that is seated within the gate passage. The cup is supported on the lower mold half so as to remain thereon as the upper mold half opens and closes the mold. The base end of each nozzle has a swivel ball and socket relationship with the manifold block which supplies it with hot melt, while the tip end of each injection nozzle is configured to permit swivelling within the insert cup as need be to accommodate dimensional changes that arise during non-uniform thermal expansion and contraction of different parts of the tooling.
Abstract:
The invention relates to a method for preparing a polymer or copolymer composition, from at least two different mixed molten polymers and/or copolymers, wherein the molten mixture is brought into contact with a structure which is at least partly dielectric and/or magnetic (2, 5), said molten mixture being simultaneously subjected on contact with said dielectric and/or magnetic structure (2, 5) to a static electric or magnetic field and a pulsed electric or magnetic field. During said method the molten mixture flows in at least one channel (7) of a piece (6), said piece (6) and said dielectric and/or magnetic structure (2, 5), being a least partly mobile one with relation to the other to generate at least one movement relative to the channel (7) with relation to the at least partly dielectric and/or magnetic structure (2, 5).
Abstract:
An injection molding apparatus comprising a manifold (15) to direct material into a mold cavity (162,164); a valve pin (41) adapted to reciprocate through the manifold toward and away from the mold cavity, wherein valve pin contacts material injected into the mold cavity; and a controller (151,210) to control a flow rate of material injected into the first cavity during an injection cycle based on a force exerted on the valve pin by the material.
Abstract:
The present invention enables one hot runner device to be shared between a plurality of molds whose resin inlets are disposed at different positions. This hot runner device discharges supplied molten material to a resin inlet 18b of a mold 18. A hot runner body 42 comprises an inlet opening into which the molten material is supplied, an outlet opening from which the molten material is discharged, and a flow passage. The inlet opening is formed at one end, and the outlet opening is formed at the other end. The flow passage connects the inlet opening and the outlet opening. The hot runner body 42 is driven and moved by a drive mechanism 56 so that the outlet opening 52 can make contact with the resin inlet 18b of each of a plurality of molds whose resin inlets 18b are disposed at different positions. Accordingly, the hot runner device can be commonly used for the plurality of molds whose resin inlets are disposed at different positions.