A closed-loop control system for flow collection and monitoring

Abstract

The invention discloses a flow collection monitoring closed-loop control system, comprising a frame, a mold, a push-pull mechanism, an extension mechanism and a circulating cooling device, the mold comprising a movable mold and a fixed mold, the fixed mold being arranged on the frame, and the fixed mold being provided with a first cavity, the movable mold being located above the fixed mold, the movable mold being provided with a second cavity corresponding to the first cavity, and the second cavity being provided with a liquid injection hole; the push-pull mechanism being arranged on the frame, and the push-pull mechanism being able to drive the movable mold to move; the extension mechanism comprising a guide groove, an extension part, a connecting rod, a turntable and a servo motor, the guide groove being arranged at the bottom of the first cavity, the extension part being arranged in the guide groove, the servo motor being arranged on the frame, the turntable being arranged on the rotating shaft of the motor, one end of the connecting rod being rotatably connected to the extension part, and the other end of the connecting rod being rotatably connected to the eccentric position of the turntable; the circulating cooling device being connected to the mold, and the circulating cooling device being used to reduce the temperature of the mold, and compared with the prior art, the circulating cooling device has a better thermal balance effect on the mold.

Description

Technical Field

[0001] The invention relates to the technical field of heat balance of die casting moulds, and in particular to a flow acquisition monitoring closed-loop control system. Background Art

[0002] At present, die casting is a commonly used technology in the field of metal forming. It is a method of obtaining castings by filling the mold cavity with liquid metal at a very high speed and cooling and solidifying it under pressure. Since the metal solution is filled into the cavity in a high-speed spray state, the original air in the cavity has no time to be discharged and inevitably stays inside the workpiece, resulting in pores in the casting, which affects the quality of the casting.

[0003] At present, the mold cooling methods commonly used in China are direct cooling or centralized point cooling. The mold thermal balance effect is poor, the mold temperature cannot be well balanced, and it is not easy to control the mold temperature within the process requirements, resulting in poor internal and external quality of the product, product size deviation, and reduced mold life. Summary of the invention

[0004] The purpose of the present invention is to provide a flow collection monitoring closed-loop control system with better mold thermal balance effect.

[0005] In order to achieve the above object, the technical solution of the present invention provides a flow acquisition monitoring closed-loop control system, the control system comprising:

[0006] frame;

[0007] A mold, wherein the mold comprises a movable mold and a fixed mold, wherein the fixed mold is arranged on the frame, and the fixed mold is provided with a first cavity, the movable mold is located above the fixed mold, and the movable mold is provided with a second cavity corresponding to the first cavity, and the second cavity is provided with a liquid injection hole;

[0008] A push-pull mechanism, which is disposed on the frame and can drive the movable mold to move;

[0009] A lifting and extending mechanism, the lifting and extending mechanism comprises a guide groove, a lifting and extending part, a connecting rod, a turntable and a servo motor, wherein the guide groove is arranged at the bottom of the first cavity, the lifting and extending part is arranged in the guide groove, the servo motor is arranged on the frame, the turntable is arranged on the rotating shaft of the servo motor, one end of the connecting rod is rotatably connected to the lifting and extending part, and the other end of the connecting rod is rotatably connected to the eccentric position of the turntable;

[0010] A circulating cooling device is connected to the mold and is used to reduce the temperature of the mold.

[0011] Further, the control system also includes a die-casting control box, which is arranged on the frame, the movable mold is provided with a first intermittent water flow channel, a first point cooling pipe hole and a first normally flowing water flow channel, the fixed mold is provided with a second intermittent water flow channel, a second point cooling pipe hole and a second normally flowing water flow channel, the circulating cooling device includes a water supply main line, an air supply main line, a water return main line, a first intermittent water supply device, a first normally flowing water device, a first water return station, a second intermittent water supply device, a second normally flowing water device, a second water return station and a PLC control module, and the PLC control module is used to control the circulating cooling device to cool the mold;

[0012] Wherein, the first intermittent water supply device comprises a first distribution box, a first diverter box and a first point cold head, the two inlet ends of the first distribution box are respectively connected to the water main line and the gas main line, the outlet end of the first distribution box is connected to the inlet end of the first diverter box, one outlet end of the first diverter box is connected to the inlet end of the first point cold head, the other outlet end of the first diverter box is connected to the inlet end of the first intermittent water flow channel, the outlet end of the first intermittent water flow channel is connected to the first water return station through a return pipe, the outlet end of the first point cold head is connected to the first water return station through a return pipe, the first point cold head extends into the first point cooling pipe hole, the inlet end of the first regular water device is connected to the water main line, the outlet end of the first regular water device is connected to the inlet end of the first regular water flow channel, the outlet end of the first regular water flow channel is connected to the first water return station through a return pipe, and the first water return station is connected to the water return main line;

[0013] Wherein, the second intermittent water supply device includes a second distribution box, a second diverter box and a second point cold head, the two inlet ends of the second distribution box are respectively connected to the water supply main line and the gas supply main line, the outlet end of the second distribution box is connected to the inlet end of the second diverter box, one outlet end of the second diverter box is connected to the inlet end of the second point cold head, the other outlet end of the second diverter box is connected to the inlet end of the second intermittent water flow channel, the outlet end of the second intermittent water flow channel is connected to the second water return station through a return pipe, the outlet end of the second point cold head is connected to the second water return station through a return pipe, the second point cold head extends into the second point cooling pipe hole, the inlet end of the second regular water device is connected to the water supply main line, the outlet end of the second regular water device is connected to the inlet end of the second regular water flow channel, the outlet end of the second regular water flow channel is connected to the second water return station through a return pipe, and the second water return station is connected to the water return main line.

[0014] Furthermore, the first constant water flow device and the second constant water flow device are both provided with a proportional regulating valve, and the proportional regulating valve is used to control the water flow rate.

[0015] Furthermore, the first distribution box and the second distribution box are both provided with solenoid valves, and the solenoid valves are used to control the water flow.

[0016] Furthermore, the push-pull mechanism includes a plurality of guide rails, a plurality of sliding members, a base plate and a telescopic cylinder, wherein the plurality of guide rails are horizontally and evenly arranged on the frame, the plurality of sliding members are respectively arranged on the plurality of guide rails, the movable mold is arranged on the plurality of sliding members, the base plate is arranged at the upper end of the plurality of guide rails, the telescopic cylinder is arranged on the base plate, and the piston rod of the telescopic cylinder is connected to the movable mold.

[0017] Furthermore, the mold is provided with a thermal imager, and the thermal imager is used to monitor the temperature change of the mold.

[0018] Furthermore, the first distribution box and the second distribution box are both provided with a water inlet flow meter, and the first water return station and the second water return station are both provided with a water return flow meter.

[0019] Furthermore, the number of the plurality of guide rails is four, and they are arranged in a rectangular array on the rack. The number of the plurality of sliding members is four, and the four sliding members are respectively arranged on the four guide rails in a one-to-one correspondence.

[0020] Furthermore, the PLC control module controls the circulating cooling device to cool the mold based on the relationship between the mold temperature collected by the imager, the water inlet flow collected by the water inlet flowmeter, and the return water flow collected by the return water flowmeter.

[0021] Further, the telescopic cylinder drives the movable mold to move rightward along the guide rail, so that the second cavity and the first cavity are correspondingly covered, and the telescopic cylinder drives the movable mold to move leftward along the guide rail, so that the second cavity opens the first cavity.

[0022] In summary, the technical solution of the flow acquisition monitoring closed-loop control system of the present invention has at least the following beneficial effects: the flow acquisition monitoring closed-loop control reduces the temperature inside the mold through the circulating cooling device, thereby achieving the thermal balance effect of the mold. For the movable mold, the circulating cooling device divides the water source in the water supply main line into multiple branches through the first distribution box and the first diversion box of the first intermittent water supply device. The water flow in one of the branches is passed through the first point cold head to perform spot cooling on the first point cooling pipe hole in the movable mold. The point cooling method has the advantages of concentrated point cooling position, fast cooling speed and good effect. The water flow in another branch flows into the first intermittent water flow channel in the movable mold for circulating cooling. After the circulating water flows out of the first intermittent water flow channel, it flows back to the first water return station through the return pipe, thereby performing circulating intermittent water supply cooling on the inside of the movable mold. In addition, a part of the water source in the water supply main line is continuously passed into the first constant water flow channel in the movable mold through the first constant water device for circulating cooling. The water after circulating cooling is returned through the return pipe The water flows to the first water return station, and the water source after cooling in the first water return station flows into the water storage tank in the workshop through the water return main line again, thereby completing intermittent water supply circulation cooling, continuous water supply circulation cooling and point cooling of the movable mold; wherein, the PLC control module receives the water inlet flow signal collected by the water inlet flow meter of the first distribution box, the return water flow signal collected by the return water flow meter of the first water return station and the mold cooling effect change signal detected by the thermal imager, processes and outputs the control signal to control the circulating cooling device to cool the mold, controls the water flow time of each branch by the solenoid valve in the first distribution box, controls the water flow rate of each branch by controlling the opening size of the proportional regulating valve of the first constant water flow device, collects and compares the relationship between the water inlet flow rate, the return water flow rate and the mold temperature, and automatically controls the water flow time and the water flow rate through calculation and real-time communication with the die-casting control box, thereby forming a closed-loop control. Compared with the prior art, the thermal balance effect of the mold is better.

[0023] In addition, the push-pull mechanism drives the movable mold to translate along the guide rail through the telescopic cylinder, so that the second cavity and the first cavity are correspondingly covered or opened. The extension mechanism drives the turntable to rotate through the servo motor, and drives the extension part to move upward along the guide groove through the connecting rod, thereby pushing the product formed in the first cavity to be demolded. The structural design is simple, safe and reliable.

[0024] In order to make the concept and other objects, advantages, features and functions of the present invention more clearly understood, preferred embodiments will be specifically cited in the following specific implementation manner and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of a flow collection and monitoring closed-loop control system provided by an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of a circulating cooling device provided by an embodiment of the present invention.

[0028] Explanation of reference numerals: 1. control system; 2. rack; 3. fixed mold; 301. second point cooling pipe hole; 302. second intermittent water flow channel; 303. second normally-flowing water flow channel; 304. first cavity; 305. guide groove; 4. movable mold; 401. first point cooling pipe hole; 402. first intermittent water flow channel; 403. first normally-flowing water flow channel; 404. second cavity; 5. die-casting control box; 6. circulating cooling device; 601. PLC control module; 602. first water return station; 603. first Distribution box; 604, first diversion box; 605, first point cold head; 606, first constant water flow device; 607, gas supply main line; 608, water supply main line; 609, water return main line; 610, second water return station; 611, second constant water flow device; 612, second distribution box; 613, second diversion box; 614, second point cold head; 7, extension mechanism; 701, turntable; 702, connecting rod; 703, extension part; 8, telescopic cylinder; 9, base plate; 10, guide rail; 11, sliding part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the present invention, for a clearer description, the following explanation is made: the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "horizontal", "horizontal", "top", "bottom", "inside", "outside", etc. in the text is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0031] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the terms “first” and “second” are only used for the purpose of clarity or simplicity of description and should not be understood as indicating or implying relative importance or quantity.

[0033] Please also see Figure 1 and Figure 2, this embodiment provides a flow collection monitoring closed-loop control system 1, the control system 1 includes a frame 2, a mold, a push-pull mechanism, an extension mechanism 7 and a circulating cooling device 6, wherein the mold includes a movable mold 4 and a fixed mold 3, wherein the fixed mold 3 is arranged on the frame 2, and the fixed mold 3 is provided with a first cavity 304, the movable mold 4 is located above the fixed mold 3, and the movable mold 4 is provided with a second cavity 404 corresponding to the first cavity 304, the second cavity 404 is provided with a liquid injection hole, and the metal liquid is injected into the second cavity 404 and the first cavity 304 through the liquid injection hole, the push-pull mechanism is arranged on the frame 2, and the push-pull mechanism can drive the movable mold 4 to move; the extension mechanism 7 includes a guide groove 305, an extension part 703, a connecting rod 702, a turntable 701 and a servo motor, wherein the guide groove 305 is arranged at the bottom of the first cavity 304, the top extension part 703 is arranged in the guide groove 305, the servo motor is arranged on the frame 2, the turntable 701 is arranged on the rotating shaft of the servo motor, one end of the connecting rod 702 is rotatably connected to the top extension part 703, and the other end of the connecting rod 702 is rotatably connected to the eccentric position of the turntable 701; the circulating cooling device 6 is arranged in the fixed mold 3, and is used to reduce the temperature in the mold. The PLC control module 601 collects the detected water flow signal and the mold temperature, and accurately controls the circulating cooling device 6 to cool the mold to obtain a temperature that is more suitable for cooling the mold, thereby improving the thermal balance effect of the mold, thereby ensuring the quality of the die-casting product.

[0034] In one embodiment, the control device also includes a die-casting control box 5, which is arranged on the frame 2, and the die-casting control box 5 is used to control the die-casting molding. The movable mold 4 is provided with a first intermittent water flow channel 402, a first point cooling pipe hole 401 and a first normally-conducting water flow channel 403, and the fixed mold 3 is provided with a second intermittent water flow channel 302, a second point cooling pipe hole 301 and a second normally-conducting water flow channel 303. The circulating cooling device 6 includes a water supply main line 608, an air supply main line 607, a water return main line 609, a first intermittent water supply device, a first normally-conducting water device 606, a first water return station 602, a second intermittent water supply device, a second normally-conducting water device 611, a second water return station 610 and a PLC control module 601, and the PLC control module 601 is used to control the circulating cooling device 6 to cool the mold.

[0035] The first intermittent water supply device includes a first distribution box 603, a first diverter box 604 and a first point cold head 605. The two inlet ends of the first distribution box 603 are respectively connected to the water main line 608 and the gas main line 607. The outlet end of the first distribution box 603 is connected to the inlet end of the first diverter box 604. One outlet end of the first diverter box 604 is connected to the inlet end of the first point cold head 605. The other outlet end of the first diverter box 604 is connected to the inlet end of the first intermittent water flow channel 402. The outlet end of the first intermittent water flow channel 402 is connected through The return pipe is connected to the first water return station 602, the outlet end of the first point cold head 605 is connected to the first water return station 602 through the return pipe, the first point cold head 605 extends into the first point cooling pipe hole 401, the inlet end of the first constant water device 606 is connected to the water supply main line 608, the outlet end of the first constant water device 606 is connected to the inlet end of the first constant water flow channel 403, the outlet end of the first constant water flow channel 403 is connected to the first water return station 602 through the return pipe, and the first water return station 602 is connected to the water return main line 609.

[0036] For the movable mold 4, the circulating cooling device 6 divides the water source in the water supply main line 608 into multiple branches through the first distribution box 603 and the first diversion box 604 of the first intermittent water supply device. The water flow of one branch passes through the first point cooling head 605 to perform spot cooling on the first point cooling pipe hole 401 in the movable mold 4. The point cooling method has the advantages of concentrated point cooling position, fast cooling speed, and good effect. The water flow of another branch flows into the first intermittent water flow channel 402 in the movable mold 4 for circulation cooling. The flowing water flows out of the first intermittent water flow channel 402 and flows back to the first water return station 602 through the return pipe, so as to circulate and intermittently supply water to cool the inside of the movable mold 4. In addition, a part of the water source in the water supply main line 608 is continuously passed into the first constant water flow channel 403 in the movable mold 4 through the first constant water device 606 for circulation and cooling. The water flow after circulation and cooling flows back to the first water return station 602 through the return pipe. The water source after cooling in the first water return station 602 flows again through the water return main line 608. Pipeline 609 flows into the water tank in the workshop, thereby completing intermittent water supply circulation cooling, continuous water supply circulation cooling and spot cooling of the movable mold 4; wherein, the PLC control module 601 receives the water inlet flow signal detected and collected by the water inlet flow meter of the first distribution box 603, the return water flow signal detected and collected by the return water flow meter of the first water return station 602, and the mold cooling effect change signal detected by the thermal imager, processes and outputs the control signal to control the circulating cooling device 6 to cool the mold, and controls the water flow time of each branch by the solenoid valve in the first distribution box 603, and controls the water flow rate of each branch by controlling the opening size of the proportional control valve of the first constant water flow device 606. The PLC control module 601 collects and compares and analyzes the relationship between the water inlet flow rate, the return water flow rate and the mold temperature, and automatically controls the water flow time and the water flow rate through calculation and real-time communication with the die-casting control box 5, thereby forming a closed-loop control. Compared with the prior art, the thermal balance effect of the mold is better.

[0037] The second intermittent water supply device includes a second distribution box 612, a second diverter box 613 and a second point cold head 614. The two inlet ends of the second distribution box 612 are respectively connected to the water main line 608 and the gas main line 607. The outlet end of the second distribution box 612 is connected to the inlet end of the second diverter box 613. One outlet end of the second diverter box 613 is connected to the inlet end of the second point cold head 614. The other outlet end of the second diverter box 613 is connected to the inlet end of the second intermittent water flow channel 302. The outlet end of the second intermittent water flow channel 302 is connected through The return pipe is connected to the second water return station 610, the outlet end of the second point cold head 614 is connected to the second water return station 610 through the return pipe, the second point cold head 614 extends into the second point cooling pipe hole 301, the inlet end of the second constant water device 611 is connected to the water supply main line 608, the outlet end of the second constant water device 611 is connected to the inlet end of the second constant water flow channel 303, the outlet end of the second constant water flow channel 303 is connected to the second water return station 610 through the return pipe, and the second water return station 610 is connected to the water return main line 609.

[0038] Specifically, the first constant water flow device 606 and the second constant water flow device 611 are both provided with proportional regulating valves for controlling the water flow rate. The first distribution box 603 and the second distribution box 612 are both provided with solenoid valves for controlling the water flow. Compared with the prior art, the embodiment of the present invention automatically controls the connection and disconnection of the water path through the solenoid valve, with a high degree of automation, thus avoiding the inability to control the water flow through the mold, resulting in a normally open or normally closed state. The present invention provides an effective cooling period and cooling water volume according to the process requirements, thereby automatically controlling the temperature balance of the mold.

[0039] Furthermore, the mold is provided with a thermal imager, which is used to monitor the temperature change of the mold to show the cooling effect of the mold; the first distribution box 603 and the second distribution box 612 are both provided with a water inlet flow meter, and the first water return station 602 and the second water return station 610 are both provided with a return water flow meter, wherein the PLC control module 601 controls the circulating cooling device 6 to cool the mold based on the relationship between the mold temperature collected by the imager, the water inlet flow collected by the water inlet flow meter and the return water flow collected by the return water flow meter.

[0040] For the fixed mold 3, the circulating cooling device 6 divides the water source in the water supply main line 608 into multiple branches through the second distribution box 612 and the second diversion box 613 of the second intermittent water supply device. The water flow in one branch passes through the second point cold head 614 to perform spot cooling on the second point cooling pipe hole 301 in the movable mold 4. The point cooling method has the advantages of concentrated point cooling position, fast cooling speed and good effect. The water flow in another branch flows into the second intermittent water flow channel 302 in the fixed mold 3 for circulating cooling. After the circulating water flows out of the second intermittent water flow channel 302, it flows back to the second water return station 610 through the return pipe, thereby performing circulating intermittent water supply cooling on the inside of the fixed mold 3. In addition, a part of the water source in the water supply main line 608 is continuously passed into the second constant water flow channel 303 in the movable mold 4 through the second constant water device 611 for circulating cooling. The water after circulating cooling flows back to the second water return station 610 through the return pipe. The water cooled in the second water return station 610 The source flows into the water storage tank in the workshop again through the water return main line 609, thereby completing intermittent water supply circulation cooling, continuous water supply circulation cooling and point cooling of the fixed mold 3; wherein, the PLC control module 601 receives the water inlet flow signal collected by the water inlet flow meter of the second distribution box 612, the return water flow signal collected by the return water flow meter of the second water return station 610, and the mold cooling effect change signal detected by the thermal imager, processes and outputs the control signal to control the circulating cooling device 6 to cool the mold, controls the water flow time of each branch by the solenoid valve in the second distribution box 612, controls the water flow rate of each branch by controlling the opening size of the proportional regulating valve of the second constant water flow device 611, collects and compares the relationship between the water inlet flow rate, the return water flow rate and the mold temperature, and automatically controls the water flow time and the water flow rate through calculation and establishes real-time communication with the die-casting control box 5, thereby forming a closed-loop control.

[0041] In addition, after the control device intermittently passes water to cool the mold water channel, the air supply main line 607 then passes compressed air to the first intermittent water flow channel 402 of the movable mold 4 and the second intermittent water flow channel 302 of the fixed mold 3, respectively, to clean the water, impurities and pollutants retained in the mold water channel. On the one hand, by cleaning the impurities and pollutants in the mold water channel with compressed air, scaling and blockage in the mold water channel can be effectively prevented to improve the uniformity of water flow in the mold water channel; on the other hand, by cleaning the residual water in the mold water channel with compressed air, the residual water can be avoided from causing the mold to be in a cooling state all the time, so as to prevent the residual water from affecting the thermal balance effect of the mold.

[0042] Among them, the second distribution box 612 and the second diversion box 613 divide the water source in the main water supply line 608 into multiple pipelines, which can be used to cool multiple molds at the same time. The multiple solenoid valves in the second distribution box 612 respectively control the on-off state of water or ventilation of multiple branches to ensure the orderly progress of the thermal balance process of multiple molds. It is easy to use, has high cooling efficiency, and intelligently and automatically controls the on-off state of water and gas circuits. It has a self-diagnosis function, sets upper and lower flow limits, and monitors and compares the inlet flow and return flow. When an abnormality occurs during work, the PLC control module 601 outputs an alarm to know the circulation of the mold cooling water, detect whether there is a defect of mold water blockage or leakage, and display the cause of the fault record; when a serious fault occurs, the equipment is forced to stop running. The control device can be connected and coordinated with the die-casting machine. The working process of each cycle is consistent with the working rhythm of the die-casting machine. The die-casting machine issues a start command, and the equipment starts to circulate automatically, ends within the working cycle of the die-casting machine, and starts the next cycle of work according to the die-casting machine command.

[0043] In one embodiment, the push-pull mechanism includes a plurality of guide rails 10, a plurality of sliding members 11, a base plate 9 and a telescopic cylinder 8, wherein the plurality of guide rails 10 are horizontally and evenly arranged on the frame 2, the plurality of sliding members 11 are respectively arranged on the plurality of guide rails 10, the movable mold 4 is arranged on the plurality of sliding members 11, the base plate 9 is arranged at the upper end of the plurality of guide rails 10, the telescopic cylinder 8 is arranged on the base plate 9, and the piston rod of the telescopic cylinder 8 is connected to the movable mold 4.

[0044] In one embodiment, the number of the plurality of guide rails 10 is four, and they are arranged in a rectangular array on the frame 2 . The number of the plurality of sliding members 11 is four, and the four sliding members 11 are respectively disposed on the four guide rails 10 in a one-to-one correspondence.

[0045] Furthermore, the telescopic cylinder 8 drives the movable mold 4 to move rightward along the guide rail 10 so that the second cavity 404 and the first cavity 304 are correspondingly covered, and the telescopic cylinder 8 drives the movable mold 4 to move leftward along the guide rail 10 so that the second cavity 404 opens the first cavity 304.

[0046] The flow collection monitoring closed-loop control system 1 of the embodiment of the present invention is controlled by the die-casting control box 5 to perform die-casting, wherein the push-pull mechanism drives the movable mold 4 to move along the guide rail 10 through the telescopic cylinder 8, so that the second cavity 404 and the first cavity 304 are correspondingly covered or opened, and the extension mechanism 7 drives the turntable 701 to rotate through the servo motor, and drives the extension part 703 to move upward along the guide groove 305 through the connecting rod 702, thereby pushing the product formed in the first cavity 304 to be demolded. The structural design is simple and safe and reliable.

[0047] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A flow collection monitoring closed-loop control system, characterized in that: The control system comprises: frame; A mold, wherein the mold comprises a movable mold and a fixed mold, wherein the fixed mold is arranged on the frame, and the fixed mold is provided with a first cavity, the movable mold is located above the fixed mold, and the movable mold is provided with a second cavity corresponding to the first cavity, and the second cavity is provided with a liquid injection hole; A push-pull mechanism, which is disposed on the frame and can drive the movable mold to move; A lifting and extending mechanism, the lifting and extending mechanism comprises a guide groove, a lifting and extending part, a connecting rod, a turntable and a servo motor, wherein the guide groove is arranged at the bottom of the first cavity, the lifting and extending part is arranged in the guide groove, the servo motor is arranged on the frame, the turntable is arranged on the rotating shaft of the servo motor, one end of the connecting rod is rotatably connected to the lifting and extending part, and the other end of the connecting rod is rotatably connected to the eccentric position of the turntable; A circulating cooling device, the circulating cooling device is connected to the mold, and the circulating cooling device is used to reduce the temperature of the mold; The control system further includes a die-casting control box, which is arranged on the frame; the movable mold is provided with a first intermittent water flow channel, a first point cooling pipe hole and a first normally flowing water flow channel; the fixed mold is provided with a second intermittent water flow channel, a second point cooling pipe hole and a second normally flowing water flow channel; the circulating cooling device includes a water supply main line, an air supply main line, a water return main line, a first intermittent water supply device, a first normally flowing water device, a first water return station, a second intermittent water supply device, a second normally flowing water device, a second water return station and a PLC control module; the PLC control module is used to control the circulating cooling device to cool the mold; Wherein, the first intermittent water supply device comprises a first distribution box, a first diverter box and a first point cold head, the two inlet ends of the first distribution box are respectively connected to the water main line and the gas main line, the outlet end of the first distribution box is connected to the inlet end of the first diverter box, one outlet end of the first diverter box is connected to the inlet end of the first point cold head, the other outlet end of the first diverter box is connected to the inlet end of the first intermittent water flow channel, the outlet end of the first intermittent water flow channel is connected to the first water return station through a return pipe, the outlet end of the first point cold head is connected to the first water return station through a return pipe, the first point cold head extends into the first point cooling pipe hole, the inlet end of the first regular water device is connected to the water main line, the outlet end of the first regular water device is connected to the inlet end of the first regular water flow channel, the outlet end of the first regular water flow channel is connected to the first water return station through a return pipe, and the first water return station is connected to the water return main line; Wherein, the second intermittent water supply device comprises a second distribution box, a second diverter box and a second point cold head, the two inlet ends of the second distribution box are respectively connected to the water main line and the gas main line, the outlet end of the second distribution box is connected to the inlet end of the second diverter box, one outlet end of the second diverter box is connected to the inlet end of the second point cold head, the other outlet end of the second diverter box is connected to the inlet end of the second intermittent water flow channel, the outlet end of the second intermittent water flow channel is connected to the second water return station through a return pipe, the outlet end of the second point cold head is connected to the second water return station through a return pipe, the second point cold head extends into the second point cooling pipe hole, the inlet end of the second regular water device is connected to the water main line, the outlet end of the second regular water device is connected to the inlet end of the second regular water flow channel, the outlet end of the second regular water flow channel is connected to the second water return station through a return pipe, and the second water return station is connected to the water return main line; The second distribution box and the second diversion box divide the water source in the main water supply line into multiple pipelines, which can be used to cool multiple molds at the same time. The multiple solenoid valves in the second distribution box respectively control the on and off states of water or ventilation in multiple branches to ensure the orderly progress of the thermal balance process of multiple molds.

2. According to claim 1, a flow collection monitoring closed-loop control system is characterized in that: The first constant water flow device and the second constant water flow device are both provided with a proportional regulating valve, and the proportional regulating valve is used to control the water flow rate.

3. According to claim 2, a flow collection monitoring closed-loop control system is characterized in that: The first distribution box and the second distribution box are both provided with a solenoid valve, and the solenoid valve is used to control the water flow.

4. A flow collection monitoring closed-loop control system according to claim 3, characterized in that: The push-pull mechanism includes a plurality of guide rails, a plurality of sliding members, a base plate and a telescopic cylinder, wherein the plurality of guide rails are horizontally and evenly arranged on the frame, the plurality of sliding members are respectively arranged on the plurality of guide rails, the movable mold is arranged on the plurality of sliding members, the base plate is arranged at the upper ends of the plurality of guide rails, the telescopic cylinder is arranged on the base plate, and the piston rod of the telescopic cylinder is connected to the movable mold.

5. A flow collection monitoring closed-loop control system according to claim 4, characterized in that: The mold is provided with a thermal imager, and the thermal imager is used to monitor the temperature change of the mold.

6. A flow collection monitoring closed-loop control system according to claim 5, characterized in that: The first distribution box and the second distribution box are both provided with a water inlet flow meter, and the first water return station and the second water return station are both provided with a water return flow meter.

7. A flow collection monitoring closed-loop control system according to claim 6, characterized in that: The number of the plurality of guide rails is four, and they are arranged in a rectangular array on the rack. The number of the plurality of sliding members is four, and the four sliding members are respectively arranged on the four guide rails in a one-to-one correspondence.

8. A flow collection monitoring closed-loop control system according to claim 7, characterized in that: The PLC control module controls the circulating cooling device to cool the mold based on the relationship between the mold temperature collected by the imager, the water inlet flow collected by the water inlet flowmeter, and the return water flow collected by the return water flowmeter.

9. A flow collection monitoring closed-loop control system according to claim 8, characterized in that: The telescopic oil cylinder drives the movable mold to move rightward along the guide rail, so that the second cavity and the first cavity are correspondingly covered, and the telescopic oil cylinder drives the movable mold to move leftward along the guide rail, so that the second cavity opens the first cavity.

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