TWM614282U - Sand mixer control system - Google Patents

Abstract

A sand mixer system, which includes a sand mixer machine, a feeding mechanic, a flowmeter and a controller. The sand mixer machine mixes a first material, a second material and a third material to form a sand mold. The feeding mechanic provides the second material and the third material to the sand mixer machine for mixture. The flowmeter monitors flows of the second material and the third material to generate a signal of flow. The controller is coupled to the feeding mechanic and the flowmeter. The controller adjusts flows of the first material, the second material or the third material according to the signal of flow.

Description

Sand mixing control system

This new creation is about a system, and especially about a sand mixing control system.

In the existing sand mixing operation, the process of the sand mixing operation often requires manual monitoring of the mixing process of various raw materials. Manual monitoring will result in the ratio of raw materials being put in or the quality of mixing cannot be taken into account at the same time. For example, if various raw materials in a fixed ratio are mixed at the same time, it is difficult to uniformly mix the various raw materials, which will result in different hardening rates when the sand mold is mixed. In addition, if the raw materials are added in stages to perform the sand mixing operation, it is difficult to quickly determine the quality of the sand mixing operation at each stage through manual monitoring, resulting in a longer time for the sand mixing operation.

This new creation provides a sand mixing control system, which can automatically monitor the proportions of various raw materials in the sand mixing operation for immediate adjustment.

The sand mixing control system created by the new model includes a sand mixer, a feeding mechanism, a flow meter and a controller. The sand mixer can be used to mix the first raw material, the second raw material and the third Raw materials to form a sand mold. The feeding mechanism can be used to provide the second raw material and the third raw material to the sand mixer for mixing. The flow meter can be used to monitor the flow of the second raw material and the third raw material to generate a flow signal. The controller is coupled to the feeding mechanism and the flow meter. The controller can adjust the flow rate of the first raw material, the second raw material or the third raw material provided by the feeding mechanism according to the flow signal.

Based on the above, the sand mixing control system created by the present invention can monitor the ratio of each raw material in the sand mixing operation in real time, and accordingly effectively control the time course of the sand mixing operation and the quality of the formed sand mold.

1, 2: Sand mixing control system

10: Sand mixer

11: Feeding organization

12: Flow meter

13: Controller

24: Temperature sensor

25: Management device

26: Human-Machine Interface

110: Inverter

111: Servo motor

Figure 1 is a schematic diagram of a sand mixing control system according to an embodiment of the new creation.

Figure 2 is a schematic diagram of a sand mixing control system according to another embodiment of the new creation.

Fig. 1 is a schematic diagram of a sand mixing control system 1 according to a new creative embodiment. The sand mixing control system 1 includes a sand mixer 10, a feeding mechanism 11, a flow meter 12 and a controller 13. The sand mixer 10 can receive raw materials to be mixed to form a sand mold. The feeding mechanism 11 can be used to provide raw materials required by the sand mixer 10 for mixing. The flow meter 12 can be used to monitor the flow of raw materials provided by the feeding mechanism 11 to the sand mixer. The controller 13 is coupled to the feeding mechanism 11 and the flow meter 12. The controller 13 can adjust the raw material flow rate from the feeding mechanism 11 to the sand mixer 10 according to the raw material flow rate provided by the flow meter 12. in accordance with The overall structure of the sand mixing control system 1 mentioned above, the sand mixing control system 1 achieves functions such as intelligent management, automatic control, and equipment perception of the sand mold making process.

In detail, the sand mixer 10 can be used to receive the first raw material, the second raw material, and the third raw material for mixing to form a sand mold. In an embodiment, the first raw material, the second raw material, and the third raw material may be raw sand, resin, and hardener, respectively. In one embodiment, the resin includes furan resin. In one embodiment, the hardening agent includes an A hardening agent and a B hardening agent, and the B hardening agent may also be replaced with water. The following description will be exemplified by raw sand, resin and hardener, but should not be used to limit the scope of the creation of the new model. In detail, the main raw material of the sand mold can be raw sand. The strength or hardness of the sand mold may depend on the amount of resin added. The hardening time required for the sand mold to mix depends on the amount of hardener added. For example, raw sand can be injected into the sand mixing part of the sand mixer 10 through a sand gate provided above the sand mixer 10, and resin and hardener can be injected into the sand mixing part through an injection port. The sand mixer 10 can mix raw sand, resin, hardener and other raw materials in the sand mixing section, and then discharge the mixed raw materials through the outlet to form a sand mold.

The feeding mechanism 11 can be used to supply resin and hardener to the sand mixer 10 at a preset flow rate.

The flow meter 12 can be used to monitor the flow rate of the resin and hardener provided by the feeding mechanism 11 to the sand mixer 10 to generate a flow rate signal.

The controller 13 is coupled to the feeding mechanism 11 and the flow meter 12. The controller 13 can determine the mixing ratio of raw sand, resin and hardener according to the flow signal provided by the flow meter 12, and accordingly control the flow rate of the raw materials provided by the feeding mechanism 11, and then Adjust the mixing ratio of raw sand, resin and hardener. The controller 13 can be, for example (but not limited to) a programmable logic controller (Programmable Logic Controller, PLC), a central processing unit (CPU), or other programmable general-purpose or special-purpose micro-controllers Micro Control Unit (MCU), Microprocessor, Digital Signal Processor (DSP), Programmable Controller, Application Specific Integrated Circuit (ASIC), Graphics Processing (Graphics Processing Unit, GPU), Arithmetic Logic Unit (ALU), Complex Programmable Logic Device (CPLD), Field Programmable Gate Array (FPGA), Any other types of integrated circuits, state machines, processors based on Advanced RISC Machine (ARM), or other similar components or combinations of the above components.

In detail, the controller 13 can control the feeding mechanism 11 to provide raw sand, resin, and hardener to the sand mixer 10 in a preset ratio. The preset ratio can be a weight percentage, and the ratio of raw sand, resin, and hardener in the preset ratio is the weight of sand (KG): resin ratio (0.1%~5%) to sand weight: hardener ratio ( 0.1%~100%) For the weight of the resin, if the sand weighs 100 kg, the resin is added 1%, and the hardener is added 43%, the gravity ratio is 100:1:0.43. Among them, the ratio of A hardener and B hardener or A hardener and water in the hardener can be 0-100:100-0. Further, the controller 13 can receive the flow signal provided by the flow meter 12 to determine the flow of each raw material in the raw sand, resin and hardener. The controller 13 can be infused into the sand mixer 10 based on the feeding mechanism 11 The flow rate of sand, resin, and hardener is used to calculate the weight of each of the raw sand, resin, and hardener, and the ratio of raw sand, resin, and hardener in the sand mold can be judged. In this way, the controller 13 can instantly adjust the flow rate of the raw sand, resin, and hardener provided by the feeding mechanism 11 according to the flow signal provided by the flow meter 12, so that the raw sand, resin, and hardener in the sand mold It can be formed by better mixing according to a preset ratio. Through the monitoring of the flow meter, the casting sand mixing control system can correct mechanical errors, and effectively improve the accuracy of the sand mixing control system 1.

In another embodiment, the controller 13 may further include a timer (not shown in FIG. 1) for calculating the time of the overall sand mixing operation. In this embodiment, the controller 13 can schedule the sand mixing operation of the sand mixing control system 1 according to a preset time. For example, the preset time may be 25 minutes, and the controller 13 may calculate the corresponding flow rates of the raw sand, resin, and hardener according to the preset time, so as to control the feeding mechanism 11 to linearly operate at 25 minutes of the preset time. The raw sand, resin, and hardener are provided to the sand mixer 10 for mixing, so as to accurately complete the feeding and sand mixing operations within a preset time. Of course, in addition to judging the proportion of each raw material based on the flow signal provided by the flow meter 12, the controller 13 can also increase or decrease the flow rate of each raw material based on the flow signal to avoid too early or late. Complete the sand mixing operation. Therefore, the sand mixing control system 1 can also be programmed according to the preset time to linearly feed the sand mixer 10 for sand mixing operation, and automatically correct the operation of the feeding mechanism 11 through flow monitoring to accurately control the sand mixing The operation time is completed in the preset time.

Fig. 2 is a schematic diagram of a sand mixing control system 2 according to a new creative embodiment. Sand mixing control system 2 includes sand mixer 10, feeding mechanism 11, flow meter 12, control The device 13, the temperature sensor 24, the management device 25, and the man-machine interface 26. For some related descriptions of the sand mixer 10, the feeding mechanism 11, the flow meter 12, and the controller 13, please refer to the paragraph above, which will not be repeated here.

In this embodiment, the feeding mechanism 11 may include a frequency converter 110 and a servo motor 111. The inverter 110 is coupled to the servo motor 111, and the servo motor 111 can adjust the flow rate of each raw material according to the frequency of the signal provided by the inverter 110. Therefore, through the inverter 110 and the servo motor 111, the controller 13 can accurately adjust the flow rate of each raw material.

Furthermore, the sand mixing control system 2 may also include a temperature sensor 24. The temperature sensor 24 can be used to sense the temperature when the raw sand is mixed and provide a temperature signal to the controller 13 so that the controller 13 can determine the temperature when the raw material is mixed according to the temperature signal. In one embodiment, when the controller 13 determines that the temperature of the raw sand is greater than a preset temperature (for example, 40°C), it means that the hardening speed of the sand mold may be too fast, and the controller 13 can control accordingly to reduce the hardening. The mixing ratio of the agent to reduce the hardening speed of the sand mold in a timely manner. Therefore, the sand mixing control system 2 can modify the mixing ratio of the raw materials according to the overall mixing situation to improve the quality of the mixed sand mold.

The management device 25 is communicatively connected to the controller 13. The management device 25 may include (but is not limited to) mobile stations, advanced mobile stations (Advanced Mobile Station, AMS), servers, clients, desktop computers, notebook computers, network computers, workstations, personal digital assistants ( Personal digital assistant (PDA), personal computer (PC), tablet computer, smart phone, smart TV, etc. The management device 25 can be connected to the controller 13 in a wired or wireless manner. Wired connection The connection method can be, for example, but not limited to, a local area network (LAN) interface, a universal serial bus (Universal Serial Bus, USB) interface, the Internet, and/or other wired communication interfaces. of. The wireless connection method can be, for example, but not limited to, wireless fidelity (WiFi) communication interface, Bluetooth (Bluetooth) communication interface, infrared (Infrared Radiation, IR) communication interface, ZigBee communication interface and/or other wireless communication interfaces. The communication interface is connected.

In another embodiment, although not shown in FIG. 2, the management device 25 includes an input interface for receiving user input and setting parameters required by the controller 13. For example, the management device 25 may receive user operations to set the preset ratio, preset time, and/or preset temperature required by the sand mixing control system 2, and provide the set data to the controller 13. On the other hand, the controller 13 can also provide the relevant data of the current sand mixing operation to the management device 25, so that the management device 25 can obtain the real-time sand mixing operation of the sand mixing control system 2 through the network transmission with the controller 13 News.

The man-machine interface 26 is coupled to the controller 13, and the man-machine interface 26 can issue a warning signal according to the instructions of the controller 13. In one embodiment, the controller 13 can instruct the man-machine interface 26 to issue a warning signal when it senses that an abnormal situation occurs in the sand mixing control system 2 during the sand mixing operation. For example, when the temperature of the sand mixing operation reaches a preset temperature (for example, 45° C.), even if the controller 13 reduces the flow rate of the hardener, the temperature of the sand mixing operation continues to rise. Then, the controller 13 can instruct the man-machine interface 26 to issue a warning signal accordingly when determining that the temperature of the sand mixing operation has risen to a warning temperature (for example, 50 °C) greater than a preset temperature (for example, 45 °C). For another example, when the controller 13 After adjusting the flow rate of raw sand, resin and hardener provided by the feeding mechanism 11, but the controller 13 still judges that the flow rate has not changed, the controller 13 can instruct the man-machine interface 26 accordingly to issue a warning signal. Therefore, the sand mixing control system 2 can effectively improve the connection between the sand mixing control system 2 and the human machine interface 26 and the warning signal through the man-machine interface 26, which can effectively improve the safety of the sand mixing operation and ensure that the sand mixing control system 2 is manufactured. The quality of sand molds.

Generally speaking, the sand mixing control system of the present invention can achieve equipment sensing through flow meters and temperature sensors, and the controller can automatically adjust the feeding mechanism according to the preset ratio, preset time and/or preset temperature. , And achieve networked transmission based on the connection between the controller and the management device and the man-machine interface. Finally, through the overall structure and operation of the sand mixing control system, intelligent management can be achieved.

In summary, the sand mixing control system can detect the mixing of raw materials in real time through the flow meter and/or temperature sensor, so as to grasp the variation caused by the mechanical error or different mixing conditions in the sand mixing operation. The controller calculates to adjust the feeding rate, and then can accurately control the sand mixing operation time, so as to provide the raw material linearly during the operation time for sand mixing, so as to avoid the excessively fast or slow hardening caused by the uneven raw material rate. problem. Furthermore, the information of the overall sand mixing operation can be provided to the management device for monitoring in real time, and a warning signal will be issued through the human-machine interface when the sand mixing operation information is abnormal, effectively preventing the occurrence of errors.

1: Sand mixing control system

10: Sand mixer

11: Feeding organization

12: Flow meter

13: Controller

Claims (10)

A sand mixing control system includes: a sand mixer for mixing a first raw material, a second raw material, and a third raw material to form a sand mold; and a feeding mechanism for providing the second raw material and the first raw material Three raw materials are sent to the sand mixer for mixing; a flow meter for monitoring the flow of the second raw material and the third raw material to generate a flow signal; and a controller coupled to the feeding mechanism and the flow meter, The controller adjusts the flow rate of the first raw material, the second raw material or the third raw material provided by the feeding mechanism according to the flow signal. The sand mixing control system according to claim 1, wherein the controller controls the feeding mechanism to provide the first raw material, the second raw material, and the third raw material according to a preset ratio, wherein the preset ratio is a weight percentage For example, and the preset ratio of the first raw material, the second raw material, and the third raw material is 100:1:0.43. The sand mixing control system according to claim 1, wherein the controller controls the feeding mechanism so that the feeding mechanism linearly provides the first raw material, the second raw material, and the third raw material to the Sand mixer for mixing. The sand mixing control system according to claim 1, further comprising: a temperature sensor coupled to the controller, and the temperature sensor is used to sense a temperature of the first raw material, The controller adjusts the mixing ratio of the third raw material according to the temperature. The sand mixing control system according to claim 4, wherein when the controller determines that the temperature of the first raw material is greater than or equal to a preset temperature, the controller controls the feeding mechanism to reduce the third raw material in the sand mold proportion. The sand mixing control system according to claim 1, further comprising: a management device communicatively connected to the controller, and the management device is used to provide a preset ratio, a preset time or a preset temperature to the controller. The sand mixing control system according to claim 1, further comprising: a man-machine interface, which is communicatively connected to the controller, so as to provide a warning signal according to the instructions of the controller. The sand mixing control system according to claim 1, wherein the first raw material, the second raw material, and the third raw material are a raw sand, a resin, and a hardener, respectively. The sand mixing control system according to claim 8, wherein the hardening agent further includes an A hardening agent and a B hardening agent, and the mixing ratio of the A hardening agent and the B hardening agent is 4: 1. The sand mixing control system according to claim 1, wherein the feeding mechanism includes a frequency converter and a servo motor.

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