Method for producing a filter feeder, device suitable for carrying out the method, and filter feeder

Abstract

In a method of manufacturing a filter feeder intended for insertion into a casting mold used for casting metals, the filter feeder has a feeder body comprising an inner feeder volume, consisting of an exothermic and/or insulating material, with a lateral wall region and with a bottom region comprising a feeder opening for connecting the feeder volume to a casting cavity. A filter element is fixed in the feeder body of the filter feeder. The invention also concerns a device suitable for carrying out the process.

1 - 15 : (canceled) 
     
     
         16 . A method of manufacturing a filter feeder ( 10 ) in a core shooter for insertion into a mold used in the casting of metals, the filter feeder ( 10 ) having a feeder body ( 11 ) with an inner feeder volume ( 12 ) and comprising an exothermic and/or insulating material, the feeder body ( 11 ) having a lateral wall region ( 13 ) and a bottom region ( 14 ) having a riser opening ( 15 ) for connecting the riser volume ( 12 ) to a mold cavity, and wherein a filter element ( 16 ) is fixed in the feeder body ( 11 ) of the filter feeder ( 10 ), comprising:
 positioning the filter element ( 16 ) on a king ( 21 ) that projects into a mold cavity ( 20 ) and provides the shape of the feeder body ( 11 ) in a shooting mold ( 17 ) of the core shooting machine and forms the feeder volume ( 12 ) of a finished filter feeder ( 10 ), the filter element ( 16 ) being positioned on the king ( 21 ) in such a way that the filter element ( 16 ) is surrounded by shot-in material during shooting of the filter feeder ( 10 ) and is anchored in material of the finished filter feeder ( 10 ).   
     
     
         17 . The method according to  claim 16 , further comprising:
 positioning the filter element ( 16 ) on an upper end face of the king ( 21 ) and fixing the filter element ( 16 ) to the upper end face, wherein the filter element ( 16 ) forms a cover opposite the bottom region ( 14 ) of the feeder body ( 11 ), and a wherein mold plate closing the mold cavity ( 20 ) in the shooting mold ( 17 ) holds the filter element ( 16 ) against the king ( 21 ) during shooting of the material.   
     
     
         18 . The method according to  claim 16 , wherein, to produce a filter feeder ( 10 ) with a filter element ( 16 ) forming the bottom region ( 14 ) of the feeder body ( 11 ), the filter element ( 16 ) is placed on a positioning disc ( 26 ) fixed to a base plate ( 18 ), the base plate ( 18 ) predetermining the bottom region ( 14 ) of the feeder body ( 11 ), wherein the king ( 21 ) is fitted with an end face onto the filter element ( 16 ) and the material is shot into remaining space of the mold cavity ( 20 ) of the shooting mold ( 17 ). 
     
     
         19 . A device for performing the method according to  claim 16 , comprising:
 a shooting mold ( 17 ) forming a component of a core shooting machine with a mold cavity ( 20 ) formed therein and being configured to receive a king ( 21 ), the king ( 21 ) having an end face that contacts a filter element positioned in the mold cavity ( 20 );   at least two radially projecting ribs ( 22 ) arranged on the outside of the king ( 21 ) and distributed over an outer circumference of the king ( 21 ), the ribs ( 22 ) projecting beyond the end face of the king ( 21 ) and at least partially externally surrounding the filter element ( 16 ) positioned on the king ( 21 ) and fixing the filter element ( 16 ) in the mold cavity ( 20 ) of the shooting mold ( 17 ) during the shooting of casting material.   
     
     
         20 . The device according to  claim 19 , wherein the ribs ( 22 ) have a crescent-shaped contour with an external curvature. 
     
     
         21 . The device according to  claim 19 , comprising four ribs ( 22 ) arranged on the circumference of the king ( 21 ). 
     
     
         22 . The device according to  claim 19 , wherein the king ( 21 ) is a component of a base plate ( 18 ) of the shooting mold ( 17 ), wherein the base pate ( 18 ) defines a bottom region ( 14 ) of a feeder body ( 11 ). 
     
     
         23 . The device according to  claim 19 , further comprising a positioning plate ( 26 ) enclosing the filter element ( 16 ) and having an edge ( 27 ) projecting from an outer circumference, the positioning plate ( 26 ) being arranged on a base plate ( 18 ) of the shooting mold ( 17 ), wherein the base plate defines the bottom region ( 14 ) of a feeder body ( 11 ). 
     
     
         24 . The device according to  claim 23 , wherein the king ( 21 ) is configured to be fitted onto a filter element ( 16 ) placed on the positioning plate ( 26 ), and wherein the king ( 21 ) is fastened to a shooting plate ( 31 ) externally closing the mold cavity ( 20 ) of the shooting mold ( 17 ). 
     
     
         25 . The device according to  claim 23 , wherein the king ( 21 ) is configured to be fitted onto a filter element ( 16 ) placed on the positioning plate ( 26 ) and is fastened to a holding plate ( 34 ) engaging externally over the mold cavity ( 20 ) of the shooting mold ( 17 ). 
     
     
         26 . The device according to  claim 23 , wherein the king ( 21 ) is configured to be fitted onto the filter element ( 16 ) placed on the positioning plate ( 26 ) and is a loose component that is fixed by a shooting plate ( 31 ) that externally closes the mold cavity ( 20 ) of the shooting mold ( 17 ) on the outside or is a holding plate ( 34 ) placed to cover the mold cavity ( 20 ). 
     
     
         27 . A filter feeder ( 10 ), comprising:
 a feeder body ( 11 ) having an inner feeder volume ( 12 ) and comprising an exothermic and/or insulating material, the feeder body ( 11 ) having a lateral wall region ( 13 ) and a bottom region ( 14 ) with a feeder opening ( 15 ) for connecting the feeder volume ( 12 ) to a mold cavity, wherein a filter element ( 16 ) is fixed in the feeder body ( 11 ) of the filter feeder ( 10 ), the filter element ( 16 ) being at least partially embedded on an outer circumference in the material of the feeder body ( 11 ) and is thereby directly anchored in the material of finished filter feeder ( 10 ) in a finished state.   
     
     
         28 . The filter feeder according to  claim 27 , further comprising at least one rib ( 40 ) formed on the inside of the lateral wall region ( 13 ) facing the feeder volume ( 12 ), said rib projecting into the feeder volume ( 12 ), said rib ( 40 ) bearing against the outer circumference of the filter element ( 16 ) at the end face and clamping and fixing the filter element. 
     
     
         29 . The filter feeder according to  claim 27 , wherein the filter element ( 16 ) is arranged in an upper region of the feeder body ( 11 ) opposite the bottom region ( 14 ) of the feeder body ( 11 ). 
     
     
         30 . The filter feeder according to  claim 27 , wherein the filter element ( 16 ) is arranged in the bottom region ( 14 ) of the feeder body ( 11 ).