Hot-chamber diecasting machine
AssigneeOskar Frech GmbH + Co. KG
InventorRoland Fink
Life of this patent
Estimating the term…
Abstract
In order to improve the compression operation and to produce better products with thin-walled castings, the invention calls for the compression operation to be divided into three phases and controlled by high-dynamic continuous-operation valves which have very short switching times and are actuated by a control device. Fitted in the hot-chamber die-casting machine for this purpose is a metal sensor which is disposed in a die relief leading from the rising bore in the casting container into the mould.
Claims7
In a hot-chamber diecasting machine in which an injection process is influenced by an electronic control device to which input signals from an injection assembly are supplied, said diecasting machine having a casting container which dips into a melt and has a riser with a mouthpiece body mounted thereon, the mouthpiece body being guided with a nozzle tip up to a mold, the improvement comprising:
- a metal sensor operatively arranged in a vicinity of a tip of the mouthpiece body, said metal sensor being connected with the electronic control device for feeding input signals to said electronic control device;
- and
- high-dynamic continuous valves having switching times between 1 and 5 ms arranged to influence the injection process, said high-dynamic continuous valves being actuated by said electronic control device and permitting speed and pressure regulation which is suitable for a product to be cast.
In a hot-chamber diecasting machine, the improvement comprising:
- a metal sensor operatively arranged in a vicinity of a tip of a mouthpiece body, said metal sensor providing signals indicating a presence of a metal front;
- high-dynamic continuous valves having switching times between 1 and 5 ms operatively arranged so as to influence an injection process for the hot-chamber diecasting machine;
- and
- an electronic control device which receives the signals from said metal sensor and which actuates said high-dynamic continuous valves permitting desired speed and pressure regulation for a product being diecast.
Dependencies are inferred from the claim text.