Abstract

A diecasting mold, comprising a first mold plate which is hot in operation and comprising at least one diecasting nozzle with an outlet point for a melt, and a second mold plate which forms a cold side. A mold cavity is formed between the first and second mold plates in a closed state of the diecasting mold, in which mold cavity a molded part can be produced from solidified melt introduced into the mold cavity via at least one melt channel, at least one diecasting nozzle and the at least one gate. The diecasting mold further comprises a demolding system, the demolding system comprising an ejector assembly, a drive device, and a force transmission device. A hot chamber system for diecasting metal melt according to the hot chamber method is also taught, a method for diecasting metal, and a use of a diecasting mold.

IPC Classes  ?

• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B22D 17/02 - Hot chamber machines, i.e. with heated press chamber in which metal is melted
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B22D 27/00 - Treating the metal in the mould while it is molten or ductile

Abstract

The invention relates to a diecasting method and a diecasting nozzle system (10) for use in a hot-chamber system (1) for the diecasting of metal melt (4), comprising a hot-chamber diecasting machine (2) with a casting vessel (3) and a melt distributor (20), which distributes the melt (4) from a machine nozzle (7) among uniformly heated diecasting nozzles (40). Arranged between a sprue region (42) of the diecasting nozzles (40) and the casting vessel (3) is at least one nonreturn valve (48), which prevents the melt (4) from flowing back from the sprue region (42) in the direction of the casting vessel (3). According to the invention, the nonreturn valve (48) is respectively arranged between the sprue region (42) of at least the upper diecasting nozzles (40) and a final branch of melt runners (22) in the melt distributor (20) to each of the diecasting nozzles (40).

IPC Classes  ?

• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B22D 17/04 - Plunger machines
• B22D 17/02 - Hot chamber machines, i.e. with heated press chamber in which metal is melted

Abstract

The invention relates to a diecasting method and a diecasting die system (10) for use in a hot-chamber system (1) for the diecasting of metal melt (4), comprising a hot-chamber diecasting machine (2) with a gooseneck (3) and a melt distributor (20), which distributes the melt (4) from a machine die (7) among uniformly heated diecasting dies (40). Arranged between a gating region (42) of the diecasting dies (40) and the gooseneck (3) is at least one nonreturn valve (48), which prevents the melt (4) from flowing back from the gating region (42) in the direction of the gooseneck (3). According to the invention, the nonreturn valve (48) is respectively arranged between the gating region (42) of at least the upper diecasting dies (40) and a final branch of melt runners (22) in the melt distributor (20) to each of the diecasting dies (40).

IPC Classes  ?

• B22D 17/04 - Plunger machines
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details

Goods & Services

Moulds for die-casting [parts of machines]; Injection moulding machines; Injection moulds. Research relating to technology; Professional consultancy relating to technology; Development of industrial processes; Product research & development; Design of instruments; Engineering project management services.

Abstract

The invention relates to a diecasting die, in particular in a diecasting hot-runner system, wherein the diecasting die is provided in a feeding region for forming a plug of solidified molten material that interrupts a flow of the molten material and can be completely remelted. A diecasting die is provided according to the preamble of the invention that is suitable for different molten materials, in which a heating acts directly on the molten material with high power and largely without delay. Cooling is not required and the injection-molding method can be carried out at a high operating machine speed and under feeding conditions that can be monitored and reproduced well. A feeding region is provided comprising direct resistance heating that produces a melting heat and is in direct thermal contact with the molten material.

IPC Classes  ?

• B22D 17/02 - Hot chamber machines, i.e. with heated press chamber in which metal is melted
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details

Abstract

Die cast nozzle for use in a die casting hot chamber system for molten metal with at least melting channel (4) in a channel carrier (3) that can be connected to a melt distributor (21), wherein the melting channel (4) passes over into a heating zone (6) and a nozzle tip (8), to which a sprue area (10) is attached, in which a plug of solidified melting can be formed that interrupts the melting flow, wherein the heating zone (6) comprises a heating cartridge (2) and/or a heatable nozzle shaft (33′) and/or the nozzle tip (8) is comprised as heatable nozzle tip (8′) and comprises at least one heating cartridge (2), the heatable nozzle shaft (33), or the heatable nozzle tip (8′) as heating element with electric heating, which comprises high power density in at least one section and low thermal inertia, comprised in a way that a temperature change gradient of 20 to 250 K/s, preferably 150 K/s, can be achieved on the surface of the heating element. A method for operating the die cast nozzle is also the subject matter of the invention.

IPC Classes  ?

• B22D 41/08 - Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies

Abstract

The invention relates to a diecasting die (7) and a diecasting method for sprueless diecasting, in particular in a diecasting hot-runner system (1), wherein the diecasting die (7) is provided in a feeding region (8) for forming a plug of solidified molten material (22) that interrupts a flow of the molten material and can be completely remelted. The problem addressed by the present invention is therefore that of providing a diecasting die and a diecasting method according to the preamble of the invention that are suitable for different molten materials, in which a heating acts directly on the molten material with high power and largely without delay, a cooling is not required and the injection-molding method can be carried out at a high operating machine speed and under feeding conditions that can be monitored and reproduced well. The problem is solved by the feeding region (8) comprising direct resistance heating that produces a melting heat and is in direct thermal contact with the molten material (22). The problem is also solved by a diecasting method with the method steps of closing the casting mold, heating the diecasting die (7), melting the plug in the feeding region (8), stopping the heating, injecting the molten material (22) into the casting mold, maintaining the pressure of the molten material (22), solidifying the molten material (22) in the casting mold and in the feeding region (8) of the diecasting die (7), opening the casting mold (43, 44) and removing a cast part from the casting mold.

IPC Classes  ?

• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B22D 17/02 - Hot chamber machines, i.e. with heated press chamber in which metal is melted
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B29C 45/27 - Sprue channels

Abstract

Diecasting nozzle for use in a diecasting hot chamber system for metal melts, comprising at least one melt channel (4) in a channel carrier (3) that can be connected to a melt distributor (21), wherein the melt channel (4) goes over into a heating zone (6) and a nozzle tip (8), which is adjoined by a sprue region (10), in which there can form a plug of solidified melt that interrupts a melt flow, wherein the heating zone (6) has a heating cartridge (2) and/or a heatable nozzle shaft (33') and/or the nozzle tip (8) is configured as a heatable nozzle tip (8') and at least the heating cartridge (2), the heatable nozzle shaft (33') or the heatable nozzle tip (8') is configured as a heating element with electrical heating, which has a high power density in at least one subregion and low thermal inertia, configured in such a way that a temperature variation gradient of 20 to 250 K/s, preferably 150 K/s, can be achieved at the surface of the heating element. The invention similarly relates to a method for operating the diecasting nozzle.

IPC Classes  ?

• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details

Abstract

The invention relates to a diecasting die (7) and a diecasting method for sprueless diecasting, in particular in a diecasting hot-runner system (1), wherein the diecasting die (7) is provided in a feeding region (8) for forming a plug of solidified molten material (22) that interrupts a flow of the molten material and can be completely remelted. The problem addressed by the present invention is therefore that of providing a diecasting die and a diecasting method according to the preamble of the invention that are suitable for different molten materials, in which a heating acts directly on the molten material with high power and largely without delay, a cooling is not required and the injection-moulding method can be carried out at a high operating machine speed and under feeding conditions that can be monitored and reproduced well. The problem is solved by the feeding region (8) comprising direct resistance heating that produces a melting heat and is in direct thermal contact with the molten material (22). The problem is also solved by a diecasting method with the method steps of closing the casting mould, heating the diecasting die (7), melting the plug in the feeding region (8), stopping the heating, injecting the molten material (22) into the casting mould, maintaining the pressure of the molten material (22), solidifying the molten material (22) in the casting mould and in the feeding region (8) of the diecasting die (7), opening the casting mould (43, 44) and removing a cast part from the casting mould.

IPC Classes  ?

• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B29C 45/27 - Sprue channels
• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B29C 33/02 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means

Abstract

The invention relates to a diecasting method and a diecasting die system (10) for use in a hot-chamber system (1) for the diecasting of metal melt (4), comprising a hot-chamber diecasting machine (2) with a gooseneck (3) and a melt distributor (20), which distributes the melt (4) from a machine die (7) among uniformly heated diecasting dies (40). Arranged between a gating region (42) of the diecasting dies (40) and the gooseneck (3) is at least one nonreturn valve (48), which prevents the melt (4) from flowing back from the gating region (42) in the direction of the gooseneck (3). According to the invention, the nonreturn valve (48) is respectively arranged between the gating region (42) of at least the upper diecasting dies (40) and a final branch of melt runners (22) in the melt distributor (20) to each of the diecasting dies (40).

IPC Classes  ?

• B22D 17/04 - Plunger machines
• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies

Abstract

Die cast nozzle for use in a die casting hot chamber system for molten metal with at least melting channel (4) in a channel carrier (3) that can be connected to a melt distributor (21), wherein the melting channel (4) passes over into a heating zone (6) and a nozzle tip (8), to which a sprue area (10) is attached, in which a plug of solidified melting can be formed that interrupts the melting flow, wherein the heating zone (6) comprises a heating cartridge (2) and / or a heatable nozzle shaft (33') and / or the nozzle tip (8) is comprised as heatable nozzle tip (8') and comprises at least one heating cartridge (2), the heatable nozzle shaft (33'), or the heatable nozzle tip (8') as heating element with electric heating, which comprises high power density in at least one section and low thermal inertia, comprised in a way that a temperature change gradient of 20 to 250 K/s, preferably 150 K/s, can be achieved on the surface of the heating element A method for operating the die cast nozzle is also the subject matter of the invention.

IPC Classes  ?

• B22D 17/02 - Hot chamber machines, i.e. with heated press chamber in which metal is melted
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies

Abstract

Described herein is a diecasting die and a diecasting method for sprueless diecasting, wherein, in a diecasting hot-runner system, the diecasting die is provided in a feeding region for forming a plug of solidified molten material that interrupts a flow of the molten material and can be completely remelted. A heating acts directly on the molten material with high power and largely without delay, so that a cooling is not required and the injection-moulding method can be carried out at a high operating machine speed and under feeding conditions that can be monitored and reproduced. Direct resistance heating produces a melting heat and is in direct thermal contact with the molten material.

IPC Classes  ?

• B22D 17/20 - AccessoriesPressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure Details
• B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B29C 33/02 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means
• B29C 45/27 - Sprue channels