Device for supplying a gas stream to a tool for molding molded parts, tool with such a device, and method for controlling the supply of a gas stream

Abstract

A device for supplying a gas stream to a tool for molding molded parts made of a fiber-containing material. Steam generated during molding is removed from the molded parts pressed in the tool via channels in the tool. A tool with such a device and a method for controlling the supply of a gas stream into the tool are described.

1 . A device for supplying a gas stream to a tool for molding molded parts made of a fiber-containing material, wherein steam generated during molding is removed from the molded parts pressed in the tool via channels in the tool, the tool comprising first channels in a tool body of the tool in regions of molding devices for molding the molded parts and at least one second channel that is connected to the first channels and surrounds the regions in the tool body with the first channels, wherein a diameter of the at least one second channel is larger than a diameter of the first channels. 
     
     
         2 . The device according to  claim 1 , wherein the first channels are interconnected at least in the regions of molding devices. 
     
     
         3 . The device according to  claim 1 , wherein the at least one second channel jointly surrounds all the regions of the molding devices of the tool body. 
     
     
         4 . The device according to  claim 1 , wherein connection points between the first channels and the at least one second channel have a smaller diameter than the first channels. 
     
     
         5 . The device according to  claim 1 , wherein an opening width of connection points between the first channels and the at least one second channel is adjustable. 
     
     
         6 . The device according to  claim 1 , wherein the at least one second channel is subdivided into channel sections, and the supply of a gas stream into the channel sections is adjustable. 
     
     
         7 . The device according to  claim 1 , wherein the supply of a gas stream into the at least one second channel and/or the first channels is adjusted by throttle elements and/or conveying devices. 
     
     
         8 . The device according to  claim 1 , further comprising at least one device for controlling a temperature of a gas stream that is fed into the at least one second channel and/or the first channels. 
     
     
         9 . The device according to  claim 1 , wherein the first channels comprise a number of channels running orthogonally to one another. 
     
     
         10 . A tool for molding molded parts made of a fiber-containing material, wherein steam generated during molding is removed from the molded parts pressed in the tool via channels in the tool, the tool comprising first channels in a tool body of the tool in regions of molding devices for molding the molded parts and at least one device having at least one second channel that is connected to the first channels and surrounds the regions in the tool body with the first channels. 
     
     
         11 . A method for controlling a supply of a gas stream into a tool for molding molded parts made of a fiber-containing material, wherein steam generated during molding is removed from the molded parts pressed in the tool via channels in the tool, wherein the tool has first channels in a tool body of the tool in regions of molding devices for molding molded parts, and at least one device having at least one second channel that is connected to the first channels and surrounds the regions in the tool body with the first channels, wherein the supply of a gas stream into the at least one second channel and/or the first channels is controlled via at least one throttle device and/or a conveying device.