Core shooting method and core shooting apparatus for the production of cores with simultaneous curing process

Abstract

A core shooting method includes:a. Inserting a first core shooting tool into a core shooting machine;b. Injecting core molding material and a binder into the first core shooting tool;c. Ejecting the first core shooting tool from the core shooting machine;d. Curing of the core in the first core shooting tool;e. Repeating the previous steps with at least one further core shooting tool, wherein the insertion of the further core shooting tool into the core shooting machine is carried out simultaneously with the ejection of the previous core shooting tool from the core shooting machine or simultaneously with the curing of the core in the previous core shooting tool.A corresponding core shooting tool is further described.

1 - 16 . (canceled) 
     
     
         17 . A core shooting method using a plurality of core shooting tools, each of which is adjustable between an open position and a closed position, wherein in the closed position the core shooting tools each form a hollow chamber geometrically adapted to a core to be shot, the method comprising the sequence of steps:
 a. Inserting a first core shooting tool into a core shooting machine;   b. Injecting core molding material and a binder into the first core shooting tool;   c. Ejecting the first core shooting tool from the core shooting machine;   d. Curing of the core in the first core shooting tool;   Repeating the previous steps with at least one further core shooting tool, wherein insertion of the further core shooting tool into the core shooting machine is carried out simultaneously with ejection of the previous core shooting tool from the core shooting machine or simultaneously with curing of the core in the previous core shooting tool,   wherein inserting a first core shooting tool into a core shooting machine comprises inserting two tool contour shells having a wall thickness of less than 20 mm, and in that for curing the core in the first core shooting tool the core shooting tool is transferred into an infrared furnace.   
     
     
         18 . The core shooting method of  claim 17 , wherein prior to shooting core molding material and a binder into the first core shooting tool, preloading of binder onto the interior surfaces of the hollow chamber occurs. 
     
     
         19 . The core shooting method of  claim 17 , wherein step b. comprises:
 Injecting core molding material into the first core shooting tool and injecting binder into the injected core molding material.   
     
     
         20 . The core shooting method of  claim 17 , wherein step b. comprises:
 Injecting a core molding material and binder mixture into the core shooting tool.   
     
     
         21 . The core shooting method according to  claim 17 , wherein the process is a cold box process. 
     
     
         22 . The core shooting method according to  claim 17 , wherein the binder is an inorganic binder. 
     
     
         23 . The core shooting method according to  claim 17 , wherein the curing temperature when the core is cured is less than or equal to 110° C., preferably less than or equal to 100°, more preferably less than or equal to 90° C. 
     
     
         24 . The core shooting method according to  claim 17 , wherein, after the core has cured, the core shooting tool is opened and the cured core is removed. 
     
     
         25 . The core shooting method according to  claim 24 , wherein the core shooting tool is cleaned after removal of the core, reset to a shootable state, and subsequently reintroduced into the core shooting machine. 
     
     
         26 . The core shooting method according to  claim 17 , wherein the same geometrically adapted hollow chamber is formed in each of the plurality of core shooting tools. 
     
     
         27 . A core shooting device for carrying out the core shooting method according to  claim 17 , having a core shooting machine, a plurality of core shooting tools, and a curing furnace, wherein the core shooting tools each have a first tool contour shell and a second tool contour shell which can be moved back and forth between a closed position and an open position, wherein in the closed position a hollow chamber geometrically adapted to a core to be shot is formed in the core shooting tool, with at least one shot hole for shooting core molding material and/or binder into the hollow chamber, and with in each case at least one frame for moving the core shooting tools into and out of the core shooting machine, the frame having at least one horizontally and/or vertically supporting support element for absorbing forces acting on the tool contour shells, wherein the curing furnace is an infrared furnace, and wherein the tool contour shells each have a wall thickness of less than 20 mm. 
     
     
         28 . The core shooting device of  claim 27 , wherein the core shooting tool further comprises at least one closing element for automated closure, in particular at least two closing clamps, which holds the tool contour shells in the closed position. 
     
     
         29 . The core shooting device of  claim 27 , wherein the tool contour shells each have a wall thickness of less than 10 mm, more preferably less than 5 mm. 
     
     
         30 . The core shooting device of  claim 27 , wherein the tool contour shells are formed substantially of plastic. 
     
     
         31 . The core shooting device according to  claim 27 , wherein a vent nozzle is provided on at least one of the tool contour shells.