A method for injection molding of thermoplastic pole parts utilizes a mold to fix at least one vacuum interrupter and contact terminals during a molding process. At least one injection opening or gate for injection of thermoplastic material is formed into the mold. The mold is applied with multiple injection openings at least along its long axis, for injection of hot thermoplastic material, and the injection openings or gates can be steered in such a way that they inject thermoplastic material simultaneously or with a defined time dependent injection pattern. This process alleviates the issue of a pressure gradient along the long axis of the molded pole part, shortens process times, and achieves a homogenous dissipation of material during the molding process.

The invention relates to a mold base for a system for injection molding of plastic parts, in particular for automotive body and/or structure components, preferably for baffle and/or reinforcing structures, comprising at least one, namely first, bridge manifold with at least a first and a second bridge manifold opening for feeding material to at least a first and a second sub-manifold of at least one mold insert assembly and at least a first and a second control valve, wherein the first control valve is provided and configured for controlling the material feed through the first bridge manifold opening and the second control valve is provided and configured for controlling the material feed through the second bridge manifold opening.

A runner system for a multi-cavity injection molding system, the runner system having runners of reduced size.

A runner system for a multi-cavity injection molding system, the runner system having runners of reduced size.

A low pressure injection mold includes a failsafe pressure mechanism that prevents the low pressure injection mold from being subjected to excessive injection pressures or excessive clamping tonnage that could damage the low pressure injection mold.

A pressure measurement device mountable to an injection unit that injects molding material of an injection molding machine, and an injection molding machine are provided. The pressure measurement device includes: a measurement cylinder mounted to the injection unit and through which the molding material injected by the injection unit flows; a plurality of dies mounted to the measurement cylinder and through which the molding material flows, and having different specifications; a flow path switching pin that selectively switches a discharge destination of the molding material to any one of the plurality of dies; and a pressure sensor that measures a pressure of the molding material in the measurement cylinder.