A method for finding ineffective energy consumption of magnesium alloy die-casting machine

Abstract

The present invention belongs to the field of die-casting, and specifically relates to a magnesium alloy die-casting machine and a method for finding ineffective energy consumption; it has the function of assisting in finding the source of ineffective energy consumption of the die-casting machine, and providing support for subsequent energy-saving improvements. The technical solution includes: a mold opening and closing power part, a mold opening and closing hydraulic cylinder, a hydraulic injection power part, an injection hydraulic cylinder, a demolding power part, a demolding telescopic part and a cooling source. The mold opening and closing power part is provided with the mold opening and closing power collection sensor, the hydraulic injection power part is provided with an injection power collection sensor, the demolding power part is provided with a demolding power collection sensor, the cooling source is provided with a cooling power collection sensor, the mold opening and closing hydraulic cylinder is provided with a mold opening and closing stroke sensor, and the injection hydraulic cylinder is provided with an injection stroke sensor.

Description

Technical Field

[0001] The invention belongs to the field of die casting, and in particular relates to a method for finding ineffective energy consumption of a magnesium alloy die casting machine. Background Art

[0002] Magnesium alloy die casting is an energy-intensive industry with high energy consumption. Magnesium alloy raw material melting, die casting and casting cooling all require a lot of energy. In current technology, the equipment and methods involved in key energy-consuming processes such as magnesium alloy raw material melting have been fully improved, while in processes such as die casting, there are problems such as complex equipment improvement and unclear energy-saving nodes that can be improved.

[0003] After statistical analysis, it was found that the energy consumption per unit volume of magnesium alloy die-casting fluctuated significantly during the die-casting process. The analysis showed that during the magnesium alloy die-casting process, the equipment was in standby for different periods of time, the mold was opened and closed frequently, and defective products were caused by errors, resulting in large differences in the energy consumption per unit volume of magnesium alloy die-casting. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a magnesium alloy die-casting machine, which has the function of assisting in finding the source of invalid energy consumption of the die-casting machine and providing support for subsequent energy-saving improvements.

[0005] On the one hand, some embodiments of the present invention provide a magnesium alloy die-casting machine. The magnesium alloy die-casting machine includes: a mold opening and closing power part, a mold opening and closing hydraulic cylinder, a hydraulic injection power part, an injection hydraulic cylinder, a demolding power part, a demolding telescopic part and a cooling source. The mold opening and closing power part is provided with a mold opening and closing power acquisition sensor, the hydraulic injection power part is provided with an injection power acquisition sensor, the demolding power part is provided with a demolding power acquisition sensor, the cooling source is provided with a cooling power acquisition sensor, the mold opening and closing hydraulic cylinder is provided with a mold opening and closing stroke sensor, and the injection hydraulic cylinder is provided with an injection stroke sensor.

[0006] Preferably, the magnesium alloy die-casting machine further comprises an energy consumption analysis center, and the mold opening and closing power collection sensor, the injection power collection sensor, the demolding power collection sensor, and the cooling power collection sensor are all electrically connected to the energy consumption analysis center.

[0007] The mold opening and closing stroke sensor and the injection stroke sensor are electrically connected to the energy consumption analysis center, and the energy consumption analysis center is configured to: analyze the operating status of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor and the injection stroke sensor, and analyze the operating power of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor, the injection stroke sensor, the demolding power collection sensor, and the cooling power collection sensor.

[0008] On the other hand, some embodiments of the present invention further provide a method for finding ineffective energy consumption of a magnesium alloy die-casting machine, which is applicable to the above-mentioned magnesium alloy die-casting machine.

[0009] The method for finding the ineffective energy consumption of a magnesium alloy die-casting machine includes: obtaining the operating state of the magnesium alloy die-casting machine according to the operating states of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demolding telescopic part and the cooling source, and the operating state of the magnesium alloy die-casting machine includes: a standby stage, a control stage and a working stage. Obtain the operating power of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demolding telescopic part and the cooling source, and obtain the energy consumption of the magnesium alloy die-casting machine in each operating state. The magnesium alloy die-casting machine processes a part once as an action cycle, and each action cycle includes the standby stage, the control stage and the working stage, and obtains the energy consumption of each action cycle. Compare the energy consumption of each action cycle, and analyze the ineffective energy consumption of the magnesium alloy die-casting machine based on the minimum energy consumption.

[0010] Preferably, when the magnesium alloy die-casting machine is in the standby stage, the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in a contracted state, or the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in an extended state and the cooling source stops outputting cold air to the workpiece to be processed.

[0011] Preferably, when the magnesium alloy die-casting machine is in the control stage, the mold opening and closing hydraulic cylinder performs an extension or contraction action.

[0012] Preferably, when the magnesium alloy die-casting machine is in the working stage, the mold opening and closing hydraulic cylinder is in an extended state, and the injection hydraulic cylinder performs an extension action, or the mold opening and closing hydraulic cylinder is in an extended state, the injection hydraulic cylinder is in an extended state, and the cooling source is working.

[0013] Preferably, when the magnesium alloy die-casting machine is in the standby stage, the power of the demoulding power part and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the standby stage is calculated, and the energy consumption of the magnesium alloy die-casting machine in the standby stage is invalid energy consumption.

[0014] Preferably, when the magnesium alloy die-casting machine is in the control stage, the power of the mold opening and closing power parts and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the control stage is calculated, and the energy consumption of the magnesium alloy die-casting machine in the control stage is invalid energy consumption.

[0015] Preferably, when the magnesium alloy die-casting machine is in the working stage, the power of the injection hydraulic cylinder and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the working stage is calculated, and the energy consumption of the magnesium alloy die-casting machine in the working stage is the effective energy consumption.

[0016] Preferably, the magnesium alloy die-casting machine further comprises a controller, the energy consumption of the controller in the standby stage and the control stage is ineffective energy consumption, and the energy consumption of the controller in the working stage is effective energy consumption. The ineffective energy consumption of the magnesium alloy die-casting machine in each action cycle also includes the ineffective energy consumption of the controller.

[0017] The beneficial effects of the present invention are:

[0018] The present invention collects the power of the main power components of the die-casting machine, and the structural sensor can obtain the working state of the die-casting machine, that is, the energy consumption of the die-casting machine under different working states can be known, and based on this, the proportion of ineffective energy consumption during the die-casting process of the die-casting machine can be judged. Technical and management personnel can make corresponding improvements to the structure and operation of the die-casting machine according to the source and proportion of ineffective energy consumption, thereby reducing ineffective energy consumption and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. 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 paying creative work.

[0020] Figure 1 It is a structural diagram of the present invention;

[0021] Figure 2 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 belong to the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is used.

[0025] In current technology, the energy consumption of die-casting machine operation can be divided into effective energy consumption and ineffective energy consumption. Among them, effective energy consumption refers to the energy consumption of completing the die-casting molding operation and cooling process of magnesium alloy during the operation of the die-casting machine. Ineffective energy consumption refers to the energy consumption of the die-casting machine when it is in standby mode, opening and closing the mold, and preparing defective parts. In addition, the increased energy consumption caused by equipment failure also belongs to ineffective energy consumption.

[0026] Generally speaking, technicians often reduce ineffective energy consumption by improving equipment and adjusting process technology. However, with the current level of technology, the research and cost required to further save energy on die-casting machines are high, which is not suitable for current enterprise development.

[0027] On the basis of the above, how to find the ineffective energy consumption of the die-casting machine that can be optimized is the basis for low-cost die-casting energy saving. Specifically, the normal operation of the die-casting machine must have ineffective energy consumption, such as the equipment standby process, mold opening and closing control, and inevitable defective products. When the operator operates the die-casting machine, the energy consumption increases due to operating habits, operating errors, waiting for molten alloy or equipment failure, and this part of the energy consumption belongs to the ineffective energy consumption that can be saved. In the case that the die-casting machine itself consumes a lot of energy, any ineffective energy consumption that can be saved is very objective after a long period of accumulation.

[0028] For example, in the actual operation process, operators have formed fixed operating habits, which basically meet the operating specifications of the enterprise and equipment. It is difficult for technicians to determine whether the operating habits can be optimized to make the operation meet the specifications while reducing the energy consumption of the equipment. Or, when the hydraulic cylinder and other parts of the die-casting machine are not sealed tightly, it is difficult for technicians to detect, but the equipment continues to complete the operation under the control of the inverter, resulting in the same operation with high energy consumption.

[0029] Based on this, on the one hand, Figure 1As shown, some embodiments of the present invention provide a magnesium alloy die-casting machine. The magnesium alloy die-casting machine comprises: a mold opening and closing power part 1, a mold opening and closing hydraulic cylinder 2, a hydraulic injection power part 3, an injection hydraulic cylinder 4, a demoulding power part 5, a demoulding telescopic part 6 and a cooling source 7. The mold opening and closing power part 1 is provided with the mold opening and closing power acquisition sensor 11, the hydraulic injection power part 3 is provided with an injection power acquisition sensor 31, the demoulding power part 5 is provided with a demoulding power acquisition sensor 51, the cooling source 7 is provided with a cooling power acquisition sensor, the mold opening and closing hydraulic cylinder 2 is provided with a mold opening and closing stroke sensor 12, and the injection hydraulic cylinder 4 is provided with an injection stroke sensor.

[0030] In some examples, the mold opening and closing power component 1 can adopt a hydraulic pump, which is connected to the mold opening and closing hydraulic cylinder 2. The piston end of the mold opening and closing hydraulic cylinder 2 is fixed with a mold. The mold opening and closing power collection sensor 11 can collect power parameters of the hydraulic pump. For example, the mold opening and closing power collection sensor 11 can be a first power sensor, which is used to collect the power of the motor driving the hydraulic pump. The mold opening and closing stroke sensor 12 can be a hydraulic cylinder position sensor 32, which can accurately collect the running distance of the piston end of the mold opening and closing hydraulic cylinder 2, thereby realizing accurate collection of the mold position of the die-casting machine.

[0031] The hydraulic injection power part 3 may include a hydraulic pump and / or a pressure accumulator, and the injection power acquisition sensor 31 may include a first liquid pressure sensor and a first flow sensor, both of which are arranged on the outlet pipeline of the hydraulic injection power part 3, for example, arranged on the outlet pipeline of the hydraulic pump or the outlet pipeline of the pressure accumulator, and the power of the hydraulic injection power part 3 may be calculated by collecting the hydraulic oil pressure and flow. The injection stroke sensor may be a hydraulic cylinder position sensor 32, which may accurately collect the piston end running distance of the injection hydraulic cylinder 4, thereby realizing accurate collection of the injection punch position of the die casting machine, and then judging whether the die casting machine is in the die casting molding working process.

[0032] The demoulding power part 5 may include a hydraulic pump, and the demoulding power acquisition sensor 51 may include a second liquid pressure sensor and a second flow sensor. The second liquid pressure sensor and the second flow sensor may be arranged on a pipeline connected to the demoulding telescopic part 6, wherein the demoulding telescopic part 6 may be a hydraulic cylinder.

[0033] Alternatively, the demoulding power member 5 may be an electric motor, the demoulding telescopic member 6 may be a piston rod, and the demoulding power collection sensor 51 may be a second power sensor for collecting the operating power of the demoulding power member 5 .

[0034] It can be understood that in the present application, the die-casting machine can be a cold chamber die-casting machine, and the mold opening and closing power component 1, the hydraulic injection power component 3 and the demolding power component 5 can share a hydraulic pump, and the hydraulic oil pressure adjustment is realized by frequency conversion motor control, and the hydraulic pump is connected to the corresponding actuator through the hydraulic valve, wherein the actuator can be the mold opening and closing hydraulic cylinder 2, the injection hydraulic cylinder 4 and the demolding telescopic component 6.

[0035] The cooling source 7 can adopt gas refrigeration equipment or electric refrigeration equipment. The energy consumption of the cooling source 7 per unit time can be calculated by collecting the gas consumption or electricity. The cooling source 7 can adopt mature equipment, and the power calculation method is the existing technology. The power calculation method of the cooling source 7 will not be elaborated here.

[0036] In some embodiments, the magnesium alloy die-casting machine also includes an energy consumption analysis center, and the mold opening and closing power collection sensor 11, the injection power collection sensor 31, the demolding power collection sensor 51, and the cooling power collection sensor are all electrically connected to the energy consumption analysis center.

[0037] The mold opening and closing stroke sensor 12 and the injection stroke sensor are electrically connected to the energy consumption analysis center, and the energy consumption analysis center is configured to: analyze the operating status of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor 12 and the injection stroke sensor, and analyze the operating power of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor 11, the injection power collection sensor 31, the demolding power collection sensor 51, and the cooling power collection sensor.

[0038] The energy consumption analysis center may include a computer or a single chip microcomputer, which receives data from the mold opening and closing power acquisition sensor 11, the injection power acquisition sensor 31, the demolding power acquisition sensor 51, and the cooling power acquisition sensor, and receives data from the mold opening and closing stroke sensor 12 and the injection stroke sensor. The energy consumption analysis center determines the operating state of the die-casting machine based on the received data from the mold opening and closing stroke sensor 12 and the injection stroke sensor, and calculates the energy consumption of the die-casting machine under different operating states in combination with the data from the mold opening and closing power acquisition sensor 11, the injection power acquisition sensor 31, the demolding power acquisition sensor 51, and the cooling power acquisition sensor, so as to analyze the proportion of ineffective energy consumption of the die-casting machine, so as to facilitate technical personnel and management personnel to provide data support for subsequent management and equipment improvement based on the data.

[0039] On the other hand, Figure 2 As shown, some embodiments of the present invention provide a method for finding ineffective energy consumption of a magnesium alloy die-casting machine, which is applicable to the above-mentioned magnesium alloy die-casting machine.

[0040] The method for finding the ineffective energy consumption of the magnesium alloy die-casting machine includes:

[0041] S1. Obtaining the operating state of the magnesium alloy die-casting machine according to the operating states of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demoulding telescopic member and the cooling source. The operating state of the magnesium alloy die-casting machine includes: a standby stage, a control stage and a working stage.

[0042] S2. Obtain the operating power of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demoulding telescopic member and the cooling source, and obtain the energy consumption of the magnesium alloy die-casting machine in each operating state.

[0043] S3. The magnesium alloy die-casting machine processes a part once as one action cycle, each action cycle includes the standby stage, the control stage and the working stage, and the energy consumption of each action cycle is obtained.

[0044] S4. Compare the energy consumption of each action cycle and analyze the ineffective energy consumption of the magnesium alloy die-casting machine based on the minimum energy consumption.

[0045] Preferably, when the magnesium alloy die-casting machine is in the standby stage, the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in a contracted state, or the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in an extended state and the cooling source stops outputting cold air to the workpiece to be processed.

[0046] In some examples, the working status of the parts corresponding to the die-casting machine can be judged according to the die opening and closing power acquisition sensor, the injection power acquisition sensor, the demolding power acquisition sensor, and the cooling power acquisition sensor. The state of the die-casting machine can be analyzed and judged in this way. The state of the die-casting machine can be divided into three categories, including the standby stage, the control stage, and the working stage. The standby stage refers to the stage when the die-casting machine is turned on but waiting for operation. The standby stage may include, for example, the time required to wait for the alloy solution or the time for the workpiece to be demolded due to process connection problems. The control stage refers to the process of controlling the opening and closing of the mold of the die-casting machine. The working stage refers to the process of merging the molds of the die-casting machine and performing die-casting, and also includes the process of cooling the die-cast workpiece.

[0047] It is understandable that in this process, the standby stage and the control stage are not directly involved in the casting process of the workpiece, and the energy consumption of this process can be identified as ineffective energy consumption. The working stage is the stage of actually completing the die-casting of the workpiece, and the energy consumption of this process can be identified as effective energy consumption. Although ineffective energy consumption does not participate in the actual die-casting operation, it is essential to the preparation process of the die-casting operation. In other words, ineffective energy consumption cannot be omitted, and ineffective energy consumption can be reduced as much as possible without having a direct impact on the die-casting efficiency and quality of the workpiece.

[0048] By collecting the energy consumption of the main equipment through sensors, the energy consumption of the die-casting machine at different stages can be obtained, that is, the ineffective energy consumption and effective energy consumption can be known.

[0049] A working cycle of the die-casting machine is from the time when the die-casting machine starts preparing to die-cast a workpiece to the time when the workpiece is completely demolded. Each action cycle includes the above three stages of the die-casting machine. This application can obtain the ineffective energy consumption and effective energy consumption in multiple working cycles when an operator is working. Through data analysis and comparison, a working cycle with low ineffective energy consumption can be obtained. Technicians or managers can analyze the operations of the operators in the working cycle and obtain the operation methods to reduce ineffective energy consumption, and provide data and sample support for technicians or managers.

[0050] Alternatively, multiple operators can be compared to analyze the reasons for lower ineffective energy consumption.

[0051] Alternatively, by comparing the ineffective energy consumption with the effective energy consumption in multiple working cycles, it is possible to discover abnormal energy consumption increases and analyze and determine possible equipment failures.

[0052] In some embodiments, when the magnesium alloy die-casting machine is in the control stage, the mold opening and closing hydraulic cylinder extends or contracts.

[0053] In some embodiments, when the magnesium alloy die-casting machine is in the working stage, the mold opening and closing hydraulic cylinder is in an extended state, and the injection hydraulic cylinder performs an extension action, or the mold opening and closing hydraulic cylinder is in an extended state, the injection hydraulic cylinder is in an extended state, and the cooling source is working.

[0054] In some embodiments, when the magnesium alloy die-casting machine is in the standby stage, the power of the demolding power component and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the standby stage is calculated, and the energy consumption of the magnesium alloy die-casting machine in the standby stage is invalid energy consumption.

[0055] In some embodiments, when the magnesium alloy die-casting machine is in the control stage, the power of the mold opening and closing power parts and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the control stage is calculated. The energy consumption of the magnesium alloy die-casting machine in the control stage is invalid energy consumption.

[0056] In some embodiments, when the magnesium alloy die-casting machine is in the working stage, the power of the injection hydraulic cylinder and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the working stage is calculated, and the energy consumption of the magnesium alloy die-casting machine in the working stage is the effective energy consumption.

[0057] In some embodiments, the magnesium alloy die-casting machine further comprises a controller, the energy consumption of the controller in the standby stage and the control stage is ineffective energy consumption, and the energy consumption of the controller in the working stage is effective energy consumption. The ineffective energy consumption of the magnesium alloy die-casting machine in each action cycle also includes the ineffective energy consumption of the controller.

[0058] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0059] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine, applicable to a magnesium alloy die-casting machine, wherein the magnesium alloy die-casting machine comprises: A mold opening and closing power part, a mold opening and closing hydraulic cylinder, a hydraulic injection power part, an injection hydraulic cylinder, a demoulding power part, a demoulding telescopic part and a cooling source, characterized in that the mold opening and closing power part is provided with a mold opening and closing power acquisition sensor, the hydraulic injection power part is provided with an injection power acquisition sensor, the demoulding power part is provided with a demoulding power acquisition sensor, the cooling source is provided with a cooling power acquisition sensor, the mold opening and closing hydraulic cylinder is provided with a mold opening and closing stroke sensor, and the injection hydraulic cylinder is provided with an injection stroke sensor; The method for finding the ineffective energy consumption of the magnesium alloy die-casting machine includes: The operating state of the magnesium alloy die-casting machine is obtained according to the operating states of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demoulding telescopic member and the cooling source, wherein the operating state of the magnesium alloy die-casting machine includes: a standby stage, a control stage and a working stage; Obtaining the operating power of the mold opening and closing hydraulic cylinder, the injection hydraulic cylinder, the demoulding telescopic member and the cooling source, and obtaining the energy consumption of the magnesium alloy die-casting machine in each operating state; The magnesium alloy die-casting machine processes a part once as one action cycle, each action cycle includes the standby stage, the control stage and the working stage, and the energy consumption of each action cycle is obtained; The energy consumption of each action cycle is compared, and the ineffective energy consumption of the magnesium alloy die-casting machine is analyzed based on the minimum energy consumption.

2. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: The magnesium alloy die-casting machine also includes an energy consumption analysis center, and the mold opening and closing power acquisition sensor, the injection power acquisition sensor, the demoulding power acquisition sensor, and the cooling power acquisition sensor are all electrically connected to the energy consumption analysis center; The mold opening and closing stroke sensor and the injection stroke sensor are electrically connected to the energy consumption analysis center, and the energy consumption analysis center is configured to: analyze the operating status of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor and the injection stroke sensor, and analyze the operating power of the die-casting machine at each time point according to the data uploaded by the mold opening and closing stroke sensor, the injection stroke sensor, the demolding power collection sensor, and the cooling power collection sensor.

3. The method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the standby stage, the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in a contracted state, or the mold opening and closing hydraulic cylinder and the injection hydraulic cylinder are both in an extended state and the cooling source stops outputting cold air to the workpiece to be processed.

4. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the control stage, the mold opening and closing hydraulic cylinder performs an extension or contraction action.

5. The method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the working stage, the mold opening and closing hydraulic cylinder is in an extended state, and the injection hydraulic cylinder performs an extension action, or the mold opening and closing hydraulic cylinder is in an extended state, the injection hydraulic cylinder is in an extended state, and the cooling source is working.

6. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the standby stage, the power of the demoulding power part and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the standby stage is calculated. The energy consumption of the magnesium alloy die-casting machine in the standby stage is invalid energy consumption.

7. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the control stage, the power of the mold opening and closing power parts and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the control stage is calculated. The energy consumption of the magnesium alloy die-casting machine in the control stage is invalid energy consumption.

8. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: When the magnesium alloy die-casting machine is in the working stage, the power of the injection hydraulic cylinder and the cooling source is obtained, and the energy consumption of the magnesium alloy die-casting machine in the working stage is calculated. The energy consumption of the magnesium alloy die-casting machine in the working stage is the effective energy consumption.

9. A method for finding ineffective energy consumption of a magnesium alloy die-casting machine according to claim 1, characterized in that: The magnesium alloy die-casting machine further includes a controller, wherein the energy consumption of the controller in the standby stage and the control stage is ineffective energy consumption, and the energy consumption of the controller in the working stage is effective energy consumption; The ineffective energy consumption of the magnesium alloy die-casting machine in each action cycle also includes the ineffective energy consumption of the controller.

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