Abstract

The present invention provides a cold runner block (100) for use with one or more injector nozzles (120) in an injection moulding system for dispensing a flowable material, including a block (100) which has at least one injector nozzle mount (110) that extends away from the block (100) to receive at least one of the injector nozzles (120), an interior space of each mount defining an injection cavity (112) that is adapted to receive an injection nozzle (120), the block (100) having formed in it a coolant gallery (105,106,109) that passes into the injection cavity (112).

IPC Classes  ?

• B29C 45/74 - Heating or cooling of the injection unit
• B29C 45/20 - Injection nozzles

Abstract

The present invention provides an apparatus (121) for exerting a holding pressure on mould dies, the apparatus including an actuating means (149) which is located adjacent to a deformation means (146), the actuating means (149) being driven by a driving means (140), wherein during an operation of the apparatus (121) the driving means (140) exerts the holding pressure on the mould dies through the deformation means (146), and in doing so causes a deformation of the deformation means (146) so as to indicate the holding pressure being exerted onto the mould dies.

IPC Classes  ?

• B29C 45/77 - Measuring, controlling or regulating of velocity or pressure of moulding material
• B29C 45/57 - Exerting after-pressure on the moulding material
• B30B 15/02 - DiesInserts therefor or mountings thereofMoulds

Abstract

A mould 3.020 has a heating layer 3.022 formed on at least a portion of its cavity surface. The heating element is a resistive layer 4.030, preferably formed using nanotechnology techniques. An insulating layer 5.036 isolates the resistive layer from the mould surface. Electrodes 4.032, 4.034 are provided for establishing electrical connexion with an electrical power source. This device enables more precise control of heating of the mould charge than the bulk heating of the mould.

IPC Classes  ?

• B29C 33/02 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means
• B29C 45/73 - Heating or cooling of the mould

Abstract

The present invention provides an injection or dosing apparatus (10) which includes at least one first chamber and piston assembly (12) for receiving a first flowable material and at least one second chamber and piston assembly (12) for receiving a second flowable material, characterised in that the first and second chambers and piston assemblies (12) are mounted on an actuator or actuators (36) for movement of the pistons into the chambers (12). The present invention also provides a canister or pail evacuation system for use with an injection or dosing apparatus (10), which dispenses the contents of a pail or canister (200) of injection moulding material or component.

IPC Classes  ?

• B29C 45/13 - Injection moulding apparatus using two or more injection units co-operating with a single mould
• B29B 7/00 - MixingKneading
• B29C 31/04 - Feeding, e.g. into a mould cavity
• B29C 31/06 - Feeding, e.g. into a mould cavity in measured doses
• B29C 31/10 - Feeding, e.g. into a mould cavity of several materials
• B29C 45/53 - Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
• B29C 45/70 - Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
• B29C 45/74 - Heating or cooling of the injection unit
• B29C 45/76 - Measuring, controlling or regulating
• B30B 15/00 - Details of, or accessories for, pressesAuxiliary measures in connection with pressing
• B65D 83/00 - Containers or packages with special means for dispensing contents

Abstract

An injector tip (3.032) for an injection mould (1.010) includes a first and second conic sections (3.030, 3.028) intersecting in a plane and forming an undercut cavity (3.018) therebetween. The cavity (3.018) is connected by ducts to a water jacket (1.018) enclosing the cylindrical body of the injector (3.032).

IPC Classes  ?

• B29C 45/20 - Injection nozzles
• B29C 45/72 - Heating or cooling
• B29C 45/74 - Heating or cooling of the injection unit