Flaskless molding equipment for molding a mold

Abstract

This invention relates to flaskless molding equipment for molding a mold that provides support for quickly restoring the stopped equipment to a normal operation. The control circuit (sequencer 200 ) monitors the movements of the movable members (lower squeezing board 4 , lower filling frame 6 , upper flask 10 , master plate 22 , and pushing plate 32 ), the cylinders (cylinder for squeezing a set of flasks 2 , cylinder for a lower filling frame 5 , cylinder for upper flask 9 , pattern-shuttle cylinder 21 , and cylinder for pushing molds 31 ), and the mechanisms for driving a cylinder (mechanism driving a cylinder for squeezing a set of flasks 400 , etc.), and if the period of the operation of each step of the flaskless molding equipment for molding a mold from the start of the operation to the point where the operation of the flaskless molding equipment for molding a mold reaches the predetermined position exceeds the predetermined period that is set to be abnormal, then the control circuit provides support for restoring the stopped equipment to a normal operation, following the instructions displayed on the screen and following the operator's input by means of an input switch.

1 . Flaskless molding equipment for molding a mold comprising:
 a plurality of movable members that carry out work starting from molding a mold from molding sand to pushing the molds onto a transporting line;   cylinders for a movable member that move each movable member;   a mechanism for driving a cylinder that drives each cylinder, the mechanism for driving a cylinder comprising a pneumatic circuit, or a combined circuit comprising a pneumatic circuit and an oil hydraulic circuit;   a control circuit that controls the electrical current to a solenoid valve that constitutes the mechanism for driving a cylinder; and   an operation panel that has a screen and an input switch and that receives a command signal from the control circuit and sends an input signal received from the input switch to the control circuit;
 wherein the control circuit monitors the movements of the movable members, the cylinders, and the mechanisms for driving a cylinder; and 
 wherein if the period of the operation of each step of the flaskless molding equipment for molding a mold from the start of the operation to the point where the operation of the flaskless molding equipment for molding a mold reaches the predetermined position exceeds the predetermined period that is set to be abnormal, then the control circuit provides support for restoring the stopped equipment to a normal operation, following the instructions displayed on the screen of the operation panel and following the operator's input by means of the input switch. 
   
     
     
         2 . The flaskless molding equipment for molding a mold of  claim 1 , wherein the cylinders comprise a cylinder for squeezing a set of flasks and the mechanism for driving a cylinder for squeezing a set of flasks, which mechanism drives the cylinder for squeezing a set of flasks, comprises the combined circuit comprising the pneumatic circuit and the oil hydraulic circuit and the steps of the operation of the cylinder for squeezing a set of flasks are shown on the display. 
     
     
         3 . The flaskless molding equipment for molding a mold of  claim 2 , wherein the display is arranged to show whether the conditions for the upward movement of the cylinder for squeezing a set of flasks are complied with. 
     
     
         4 . The flaskless molding equipment for molding a mold of  claim 3 , wherein the display is arranged to show a screen showing support for restoring the stopped equipment to a normal operation. 
     
     
         5 . The flaskless molding equipment for molding a mold of  claim 4 , wherein the display is arranged to show the operation of an actuator in the screen showing support for restoring the stopped equipment to a normal operation. 
     
     
         6 . The flaskless molding equipment for molding a mold of  claim 4 , wherein the display is arranged to show in the screen showing support for restoring the stopped equipment to a normal operation a part showing that an electric signal is being supplied to a valve connector. 
     
     
         7 . The flaskless molding equipment for molding a mold of  claim 4 , wherein the display is arranged to show in the screen showing support for restoring the stopped equipment to a normal operation whether there is any article or obstacle that interferes or obstructs the movement of the actuator or work (product). 
     
     
         8 . The flaskless molding equipment for molding a mold of  claim 4 , wherein the display is arranged to show in the screen showing support for restoring the stopped equipment to a normal operation whether air and oil are being supplied by the valves. 
     
     
         9 . The flaskless molding equipment for molding a mold of any of  claims 6  to  8 , wherein the display is arranged to show in the screen showing support for restoring the stopped equipment to a normal operation the necessary measures for restoring the stopped equipment to a normal operation. 
     
     
         10 . The flaskless molding equipment for molding a mold of  claim 2 , wherein the cylinders comprise a pattern-shuttle cylinder. 
     
     
         11 . The flaskless molding equipment for molding a mold of  claim 10 , wherein the cylinders comprise a cylinder for a lower filling frame. 
     
     
         12 . The flaskless molding equipment for molding a mold of  claim 11 , wherein the cylinders comprise a cylinder for an upper flask. 
     
     
         13 . The flaskless molding equipment for molding a mold of  claim 12 , wherein the cylinders comprise a cylinder for pushing molds. 
     
     
         14 . Flaskless molding equipment for molding a mold comprising:
 a lower squeezing board, a lower filling frame, an upper flask, a master plate, and a pushing plate that mold molds from molding sand and push them onto the transporting line;   a cylinder for squeezing a set of flasks that moves a lower squeezing board, a cylinder for a lower filling frame that moves the lower filling frame, a cylinder for upper flask that moves the upper flask, a pattern-shuttle cylinder that moves the master plate, and a cylinder for pushing molds that moves the pushing plate;   a mechanism for driving a cylinder for squeezing a set of flasks comprising a combined circuit comprising a pneumatic circuit and an oil hydraulic circuit;   a mechanism for driving a cylinder that move a cylinder;   a control circuit that controls the electric current to solenoid valves that are the components of the mechanisms for driving a cylinder; and   an operation panel that has a screen and an input switch and that receives a command signal from the control circuit and sends an input signal received from the input switch to the control circuit,   wherein the control circuit monitors the movements of the movable members, the cylinders and the mechanisms for driving a cylinder;   wherein if the period of the operation of each step of the flaskless molding equipment for molding a mold from the start of the operation to the point where the operation of the flaskless molding equipment for molding a mold reaches the predetermined position exceeds the predetermined period that is set to be abnormal, then the control circuit provides support for restoring the stopped equipment to a normal operation, following the instructions displayed on the screen of the operation panel and following the operator's input operation by means of the input switch;   wherein the display show the screen for the steps of operation for the cylinder for squeezing a set of flasks, the screen to see whether the conditions for the upward movement of the cylinder for squeezing a set of flasks are complied with and the screen showing support for restoring the stopped equipment to a normal operation; and   wherein the screen showing support for restoring the stopped equipment to a normal operation includes parts showing the operation of an actuator, showing whether electric signal is being supplied to a valve connector, showing whether there is any article or obstacle that interferes or obstructs the movement of the actuator or work (product), showing whether air and oil are being supplied from the valves and showing the measures to restore the equipment to a normal operation.