Digital Die Casting Machine with Mold Temperature Control

Abstract

The present disclosure relates to the technical field of die casting machine devices, in particular to a digital die casting machine with mold temperature control, including: a die casting machine configured to die-cast a casting through a mold, a cooling flow control apparatus configured to control a mold temperature by controlling a cooling medium flow, a temperature collection apparatus configured to collect the mold temperature, a control cabinet configured to acquire and store data collected by the temperature collection apparatus and control operation of the die casting machine, the cooling flow control apparatus and an automatic control apparatus, an edge computer configured to execute a die casting temperature optimization strategy according to the collected data stored in the control cabinet, and the automatic control apparatus. The present disclosure improves the molding quality of castings by adjusting the mold temperature in a casting process.

What is claimed is: 
     
         1 . A digital die casting machine with mold temperature control, comprising:
 a die casting machine, configured to die-cast a casting through a mold;   a cooling flow control apparatus, connected with the die casting machine and configured to control a mold temperature by controlling a cooling medium flow;   a temperature collection apparatus, connected with the die casting machine and configured to collect the mold temperature using a preset collection strategy in a die-casting process;   an automatic control apparatus, connected with the die casting machine, and comprising a filter screen automatic placing unit configured to place a filter screen and a casting automatic transferring unit configured to transfer the casting;   a control cabinet, connected with the die casting machine, the cooling flow control apparatus, the temperature collection apparatus and the automatic control apparatus respectively, and configured to acquire and store data collected by the temperature collection apparatus and control operation of the die casting machine, the cooling flow control apparatus and the automatic control apparatus; and   an edge computer, connected with the control cabinet, and comprising a mold temperature control program and a cooling flow control program, wherein the mold temperature control program is used for executing a die casting temperature optimization strategy according to the collected data stored in the control cabinet; wherein   the preset collection strategy is to acquire a die casting key position of the casting and perform temperature acquisition on an inner wall and an outer wall of the mold corresponding to the die casting key position respectively; and   the die casting temperature optimization strategy is to adjust a temperature of the die casting key position and/or an overall temperature of the mold according to the collected data, or adjust a temperature of the outer wall of the mold according to a temperature difference between the inner wall and the outer wall of the mold.   
     
     
         2 . The digital die casting machine with mold temperature control according to  claim 1 , wherein the temperature collection apparatus is composed of a temperature collection unit, temperature collection connecting lines and a die casting material temperature sensor configured to collect a temperature of the inner wall of the mold and a temperature of a die casting material, a shell of the temperature collection unit is a cuboid, the shell comprises a connection surface, a line outlet surface, a covering surface and three socket installation surfaces, the connection surface is connected with the die casting machine, the covering surface is a covering structure and used for optimizing an installation process of a shell of the temperature collection unit and a thermocouple female socket, a plurality of thermocouples are installed on the socket installation surfaces, and the temperature collection connecting lines are centrally exported from the line outlet surface and are connected to the control cabinet; wherein
 the temperature collection unit is installed on a vertical column of the die casting machine and/or installed on a top plate according to a mold action mode, the thermocouples are respectively installed on the inner wall and the outer wall of the mold according to the die casting key position, and the die casting material temperature sensor is installed on the vertical column or the top plate.   
     
     
         3 . The digital die casting machine with mold temperature control according to  claim 2 , wherein the die casting key position is determined by historical fault positions of the same casting, or by performing finite element analysis on application scenarios of the casting. 
     
     
         4 . The digital die casting machine with mold temperature control according to  claim 1 , wherein the cooling flow control apparatus is composed of a cooling flow control cabinet and cooling pipelines, the cooling flow control cabinet comprises an angle seat proportional valve configured to control the cooling medium flow in the cooling pipelines and a flow sensor configured to measure the cooling medium flow in real time, and the cooling pipelines are uniformly distributed on the outer wall of the mold and cover the die casting key position; wherein
 the flow sensor measures a flow value of the cooling pipelines in real time and feeds back the flow value to the cooling flow control program in the edge computer for feedback calculation, and the control cabinet controls the angle seat proportional valve to adjust the cooling medium flow according to a feedback calculation result, so as to correct a control error.   
     
     
         5 . The digital die casting machine with mold temperature control according to  claim 1 , wherein the die casting temperature optimization strategy comprises establishing a standard temperature curve corresponding to a single thermocouple, and setting a control temperature and a control slope according to the standard temperature curve, wherein in a die casting process, the temperature collection unit collects a temperature of a thermocouple at a preset collection frequency, and the edge computer compares the control temperature and the control slope with a temperature and a slope at a current moment to adjust a working mode of the cooling flow control apparatus; wherein
 an abscissa of the standard temperature curve is a die casting time, and an ordinate is a control temperature; and   the temperature at the current moment is a temperature corresponding to a collection moment closest to the current moment, and the slope at the current moment is an average value of collection slopes of a preset quantity of collection moments closest to the current moment.   
     
     
         6 . The digital die casting machine with mold temperature control according to  claim 5 , wherein the edge computer compares the control temperature and the control slope with the temperature and the slope at the current moment;
 in a case that a result is a preset comparison result, the control cabinet controls the cooling pipeline corresponding to the thermocouple to execute a switching action; wherein   the preset comparison result meets that the control slope is greater than 0, the slope at the current moment is greater than 0, the temperature at the current moment is greater than or equal to a set temperature at the current moment, and a minimum value in the temperatures corresponding to the preset quantity of collection moments is smaller than the control temperature; or the control slope is smaller than 0, the slope at the current moment is smaller than 0, the temperature at the current moment is smaller than or equal to the set temperature at the current moment, and a maximum value in the temperatures corresponding to the preset quantity of collection moments is greater than the control temperature; and   the switching action is that in a case of the cooling pipeline being in an open state, the cooling flow control cabinet closes the cooling pipeline, and in a case of the cooling pipeline being in a closed state, the cooling flow control cabinet opens the cooling pipeline.   
     
     
         7 . The digital die casting machine with mold temperature control according to  claim 6 , wherein in a case that the edge computer determines that a comparison result of the control temperature and the control slope with the temperature and the slope at the current moment is another comparison result except the preset comparison result, the cooling flow control cabinet adjusts the cooling medium flow according to the control temperature and the temperature at the current moment in the standard temperature curve. 
     
     
         8 . The digital die casting machine with mold temperature control according to  claim 7 , wherein after the die casting process is performed for a preset time, in a case that an average value of difference values between the temperature of the inner wall of the mold and the temperature of the outer wall of the mold is smaller than a preset difference value, and a temperature of a die casting material measured by a die casting material temperature sensor is smaller than a preset temperature, the casting automatic transferring unit transfers a molded casting out of the die casting machine. 
     
     
         9 . The digital die casting machine with mold temperature control according to  claim 2 , wherein the thermocouple female socket is a K-type thermocouple female socket. 
     
     
         10 . The digital die casting machine with mold temperature control according to  claim 1 , wherein a single temperature collection unit outputs the temperature of a single thermocouple, and meanwhile outputs a temperature average value and a temperature standard deviation of detected temperatures of all thermocouples installed in the temperature collection unit, so as to determine a detection ability and rationality of arrangement positions of the temperature collection unit.