Water-cooling circulation injection mold for frequency converter machining and injection molding method

Abstract

The invention relates to the technical field of injection molding production, in particular to a water-cooling circulation injection mold for frequency converter machining and an injection molding method.The injection molding method comprises the steps that materials are added into a material melting module and melted, and an injection molding module is locked for injection molding of melted materials; the acquisition module acquires temperature data in the injection molding module and pressure data in a pipeline of the cooling module in real time to obtain acquired data; the control module performs control logic transportation based on the collected data in combination with a preset temperature target value range and a cooling liquid pressure target value range, obtains a control instruction, and dynamically adjusts the output of the cooling module until the melt is cooled and shaped; according to the method, the flow and the pressure of the cooling liquid can be adjusted in real time according to actual cooling requirements, energy waste caused by constant-speed operation of a liquid pump in a traditional cooling mode is avoided, and the production efficiency and the economical efficiency are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding production, and particularly relates to a water-cooled circulating injection mold for processing frequency converters and an injection molding method. Background Art

[0002] A frequency converter is a power control device that applies frequency conversion technology and microelectronics technology to control an AC motor by changing the frequency of the motor's working power supply. During the processing of a frequency converter, its housing and many internal components are usually formed and processed using an injection mold.

[0003] During the injection molding process, after the molten plastic is injected into the mold cavity, it needs to be cooled and solidified as soon as possible so as to be quickly demolded and ensure the dimensional accuracy and quality of the product. The water-cooled circulation system plays a key role in the injection mold. It sets cooling channels inside the mold, allows the coolant to circulate therein, takes away the heat of the mold, thereby accelerating the cooling speed of the plastic, shortening the molding cycle, and improving production efficiency.

[0004] During the operation of a traditional injection molding machine, the liquid pump usually runs at a constant speed. Regardless of how the pressure and flow rate required in the actual production process change, the liquid pump keeps running at full load, resulting in a large amount of energy waste. Summary of the Invention

[0005] The purpose of the present invention is to provide a water-cooled circulating injection mold for processing frequency converters and an injection molding method, aiming to solve the problem of a large amount of energy waste caused by the constant full-load operation of the liquid pump during the operation of traditional injection molding.

[0006] To achieve the above purpose, in the first aspect, the present invention provides a water-cooled circulating injection molding method for processing frequency converters, including the following steps:

[0007] Feed and melt the material into the melting module, and lock the injection molding module to inject the molten material;

[0008] The acquisition module continuously acquires the temperature inside the injection molding module and the pressure data in the pipeline of the cooling module to obtain acquisition data;

[0009] The control module performs control logic transportation based on the acquisition data in combination with a preset temperature target value range and a coolant pressure target value range, obtains a control instruction, and dynamically adjusts the output of the cooling module until the molten material is cooled and solidified;

[0010] The injection molding module is opened, the demolding module operates and ejects the frequency converter housing, and the appearance quality of the frequency converter housing is detected.

[0011] Among them, the specific method of feeding and melting the material into the melting module and locking the injection molding module to inject the molten material:

[0012] Obtain injection molding raw materials, screen and remove impurities in the raw materials to obtain pure raw materials;

[0013] Add the pure raw materials into the melt module and perform melting treatment to obtain melt;

[0014] Detect the injection molding module, confirm no abnormal smell, lock the injection molding module and inject the melt.

[0015] Among them, the acquisition module real-time collects the temperature in the injection molding module and the pressure data in the pipeline of the cooling module to obtain the specific method of the acquisition data:

[0016] The acquisition module real-time collects the temperature in the injection molding module to obtain temperature data;

[0017] The acquisition module real-time collects the pressure data in the pipeline of the cooling module to obtain coolant pressure data;

[0018] Perform filtering and normalization processing on the temperature data and the coolant pressure data to obtain acquisition data.

[0019] Among them, the control module performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range, obtains a control instruction, and dynamically adjusts the output of the cooling module until the melt cools and solidifies. The specific method is as follows:

[0020] The control module performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range to obtain a control instruction;

[0021] The control module dynamically adjusts the output of the cooling module based on the control instruction until the melt cools and solidifies.

[0022] In a second aspect, the present invention also provides a water-cooled circulating injection mold for frequency converter processing, which is applied to the water-cooled circulating injection molding method for frequency converter processing as described in the first aspect above. It includes a melt module, an injection molding module, a cooling module, an acquisition module, a control module and a demolding module. The melt module, the injection molding module and the demolding module are connected in sequence. The cooling module is connected to the injection molding module. The acquisition module is respectively connected to the injection molding module and the cooling module. The control module is respectively connected to the melt module, the injection molding module, the cooling module, the acquisition module and the demolding module;

[0023] The melt module is used to uniformly melt the injection molding raw materials to obtain melt;

[0024] The injection molding module is used to lock and inject the melt to injection mold the frequency converter housing;

[0025] The demolding module is used to eject the injection-molded frequency converter housing from the injection molding module, realizing the self-demolding of the frequency converter housing;

[0026] The acquisition module is used to collect the temperature in the injection molding module and the pressure data in the pipeline of the cooling module in real time to obtain the acquisition data;

[0027] The cooling module is based on a liquid pump to extract the coolant in the cooling tower to realize water-cooling heat dissipation of the molten material in the injection molding module, accelerating the cooling and molding of the frequency converter housing;

[0028] The control module is used to control the operation of the other modules.

[0029] Among them, the injection molding module includes an injection mold, an injection unit, a buffer unit and a guiding unit, and the injection mold is respectively connected to the injection unit, the buffer unit and the guiding unit;

[0030] The injection mold is used for injection molding the frequency converter housing;

[0031] The injection unit is used to inject the molten material in the molten material module into the injection mold;

[0032] The buffer unit is used to buffer and protect the injection mold when the injection mold is locked;

[0033] The guiding unit is used for direction guiding when the injection mold is in operation.

[0034] Among them, the control module includes a receiving unit, an arithmetic unit and a control unit, and the receiving unit, the arithmetic unit and the control unit are connected in sequence;

[0035] The receiving unit is used to receive the acquisition data transmitted by the acquisition module;

[0036] The arithmetic unit performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range to obtain a control instruction;

[0037] The control unit dynamically adjusts the output of the cooling module based on the control instruction and controls the operation of the other modules.

[0038] A water-cooled circulating injection molding method for processing frequency converters according to the present invention includes feeding and melting materials into a melting material module, and locking an injection molding module to inject the melted materials; a collection module collects temperature data inside the injection molding module and pressure data in the pipeline of a cooling module in real time to obtain collection data; a control module performs control logic transportation based on the collection data in combination with a preset temperature target value range and a coolant pressure target value range, obtains a control instruction, and dynamically adjusts the output of the cooling module until the melted materials are cooled and solidified; the injection molding module is opened, a demolding module operates to eject the frequency converter housing, and the appearance quality of the frequency converter housing is detected. This method can combine the temperature inside the injection mold and the pressure of the coolant at the outlet of the cooling pipeline collected in real time with preset values, and perform logical operations using a PID algorithm to obtain a control instruction to dynamically adjust the rotation speed of the liquid pump of the cooling module, thereby controlling the pressure of the coolant. Therefore, the flow rate and pressure of the coolant can be adjusted in real time according to actual cooling requirements, avoiding energy waste caused by the constant-speed operation of the liquid pump in the traditional cooling method, and further improving production efficiency and economy. It solves the problem of a large amount of energy waste caused by the constant full-load operation of the liquid pump during the traditional injection molding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a flowchart of a water-cooled circulating injection molding method for processing frequency converters provided by the present invention.

[0041] Figure 2 It is a flowchart of the specific method for feeding and melting materials into the melting material module and locking the injection molding module to inject the melted materials.

[0042] Figure 3 It is a flowchart of the specific method for the collection module to collect temperature data inside the injection molding module and pressure data in the pipeline of the cooling module in real time to obtain collection data.

[0043] Figure 4 It is a flowchart of the specific method for the control module to perform control logic transportation based on the collection data in combination with a preset temperature target value range and a coolant pressure target value range, obtain a control instruction, and dynamically adjust the output of the cooling module until the melted materials are cooled and solidified.

[0044] Figure 5 It is a connection schematic diagram of a water-cooled circulating injection mold for processing frequency converters provided by the present invention.

[0045] In the figure: 1 - melt material module, 2 - injection molding module, 3 - cooling module, 4 - acquisition module, 5 - control module, 6 - demolding module, 7 - injection mold, 8 - injection unit, 9 - buffer unit, 10 - guiding unit, 11 - receiving unit, 12 - operation unit, 13 - control unit. Specific implementation mode

[0046] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0047] Please refer to Figures 1 to 4 , in the first aspect, the present invention provides a water-cooled circulating injection molding method for frequency converter processing, including the following steps:

[0048] S1 Add materials to the melt material module 1 and melt the materials, and lock the injection molding module 2 to inject the melt material;

[0049] Specific method:

[0050] S11 Obtain injection molding raw materials, and screen and remove impurities in the raw materials to obtain pure raw materials;

[0051] In the embodiment of the present invention, workers obtain injection molding raw materials, and visually inspect and screen to remove impurities (foreign objects, sand grains, differently colored plastic particles) in the raw materials to obtain pure raw materials.

[0052] S12 Add the pure raw materials into the melt material module 1 and perform melting treatment to obtain melt materials;

[0053] S13 Detect the injection molding module 2, confirm that there is no peculiar smell, lock the injection molding module 2 and inject the melt material.

[0054] S2 The acquisition module 4 continuously acquires the temperature in the injection molding module 2 and the pressure data in the pipeline of the cooling module 3 to obtain acquisition data;

[0055] Specific method:

[0056] S21 The acquisition module 4 continuously acquires the temperature in the injection molding module 2 to obtain temperature data;

[0057] In an embodiment of the present invention, temperature sensors are installed at key parts (such as cavities, cores, etc.) of the injection molding module 2 to monitor the mold temperature in real time. These temperature sensors convert the collected temperature signals into electrical signals (such as the millivolt-level voltage signals output by thermocouple sensors and the resistance value change signals output by thermal resistance sensors), and transmit them to the control module 5. The control module 5 performs A / D (analog / digital) conversion on these analog signals to convert them into digital signals for subsequent processing and analysis.

[0058] S22 The acquisition module 4 collects the pressure data in the pipeline of the cooling module 3 in real time to obtain the coolant pressure data;

[0059] In an embodiment of the present invention, pressure sensors are installed at appropriate positions (such as the pump outlet, the inlet of the mold cooling channel, etc.) in the cooling water pipeline of the cooling module 3 to monitor the pressure of the coolant. The pressure sensors convert the pressure signals into standard electrical signals (such as 4-20mA current signals or 0-10V voltage signals), and also transmit them to the control system for A / D conversion and processing.

[0060] S23 Filter and normalize the temperature data and the coolant pressure data to obtain the acquisition data.

[0061] In an embodiment of the present invention, a digital filtering algorithm, such as mean filtering, is used to perform an average calculation on the temperature data to eliminate random noise interference. For the coolant pressure data, if its signal fluctuates greatly, median filtering can be used. Sort the 5 continuously collected pressure data and take the median value as the valid data to avoid data anomalies caused by instantaneous interference. The temperature value range output by the temperature data may be 0-150°C, and the pressure value range output by the coolant pressure data is 0-10MPa. To facilitate the control system to perform data processing and analysis, the measurement data of different physical quantities are normalized to the same range, such as 0-1. For the temperature value, the formula

[0062] Tnorm = (T - Tmin) / (Tmax - Tmin)

[0063] is used for normalization, where T is the actual measured temperature, and Tmin and Tmax are the minimum and maximum values of the measurement range of the temperature sensor respectively; the pressure value is also normalized using a similar formula. After such processing, the control system can more conveniently perform comprehensive analysis and processing on the data of different types of sensors, improving the stability and versatility of the control algorithm.

[0064] S3 The control module 5 performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range, obtains the control instruction, and dynamically adjusts the output of the cooling module 3 until the molten material cools and solidifies;

[0065] Specific method:

[0066] The S31 control module 5 performs control logic transportation based on the collected data in combination with a preset temperature target value range and a coolant pressure target value range to obtain a control instruction;

[0067] In the embodiment of the present invention, the actual measured value, the preset temperature target value range, and the coolant pressure target value range are clarified. The target value is the intermediate ideal value of the upper and lower limits of the temperature of each area of the mold and the coolant pressure target value preset in the control system. The deviation value e(t) is equal to the target value r(t) minus the actual measured value y(t), that is, e(t)=r(t)-y(t).

[0068] The output P(t) of the proportional link is proportional to the deviation value e(t), and its calculation formula is

[0069] P(t)=Kp×e(t)

[0070] Among them, Kp is the proportionality coefficient. The proportionality coefficient determines the response speed of the control system to the deviation. The larger the proportionality coefficient, the more sensitive the system is to the deviation. For example, when the mold temperature is higher than the target value, the proportional link will rapidly increase the output frequency of the frequency converter according to Kp, prompting the water pump speed to increase and increasing the coolant flow rate to enhance the cooling effect.

[0071] The integral link is used to eliminate the steady-state error of the system. Its output I(t) is the integral of the deviation value e(t) over time, and the calculation formula is

[0072]

[0073] Among them, Ki is the integral coefficient. The integral link will accumulate the deviations over a period of time and continuously adjust the output frequency of the frequency converter until the deviation is eliminated. When the mold temperature is higher than the target value for a long time, even if the proportional link has reacted, the temperature may still not return to the target value due to various factors (such as the large heat capacity of the mold, etc.). At this time, the integral link comes into play. As time goes by, its output value continuously increases, further adjusting the frequency of the frequency converter, so that the water pump speed continues to rise, enhancing the cooling capacity until the temperature reaches the target value. For example, within a period of time, the mold temperature has always been higher than the target value, and the deviation always exists. The integral link continuously accumulates the deviation. After a certain period of time, the integral output value may increase from 0 to 50 (the specific value is related to Ki and the magnitude and duration of the deviation), thereby promoting the adjustment of the frequency converter frequency and making the system finally stable near the target value.

[0074] The differential link mainly adjusts the output according to the change rate of the deviation value. Its output D(t) is proportional to the change rate of the deviation value, and the calculation formula is:

[0075] D(t) = Kd × de(t) / dt

[0076] Wherein, Kd is the differential coefficient. The differential link can react to the change trend of the system in advance to prevent the physical quantities such as temperature or pressure from rising or falling excessively. For example, when the mold temperature rises rapidly, the change rate of the deviation value is large, and the differential link outputs a large value, which will cause the output frequency of the frequency converter to change rapidly, increase the water pump speed in advance, enhance the cooling effect, and avoid excessive temperature rise.

[0077] Calculate the output frequency of the frequency converter: Add the output values of the proportional link, integral link and differential link to obtain the control quantity u(t) finally used to adjust the output frequency of the frequency converter. The formula is:

[0078]

[0079] The control module 5 transmits the adjustment instruction to the frequency converter according to this calculated control quantity u(t) in combination with the communication setting with the frequency converter through a communication protocol (such as Modbus protocol). The frequency converter adjusts the frequency of the three-phase alternating current output to the cooling water pump motor according to the received instruction, thereby changing the water pump speed and realizing precise control of the coolant flow rate and pressure to meet the actual cooling requirements. For example, if P(t) = -10, I(t) = 50, D(t) = 3 are calculated, then u(t) = -10 + 50 + 3 = 43, and the control system will send the frequency adjustment instruction corresponding to this calculation result to the frequency converter, and the frequency converter adjusts the output frequency accordingly to realize the control of the water pump speed.

[0080] In S32, the control module 5 dynamically adjusts the output of the cooling module 3 based on the control instruction until the molten material is cooled and solidified.

[0081] In S4, the injection molding module 2 opens the mold, the demolding module 6 operates and ejects the frequency converter housing, and detects the appearance quality of the frequency converter housing.

[0082] Please refer to Figure 5 , Second, the present invention also provides a water-cooled circulating injection mold for frequency converter processing, which is applied to the water-cooled circulating injection molding method for frequency converter processing as described in the first aspect above. It includes a melting module 1, an injection molding module 2, a cooling module 3, a collection module 4, a control module 5 and a demolding module 6. The melting module 1, the injection molding module 2 and the demolding module 6 are connected in sequence. The cooling module 3 is connected to the injection molding module 2. The collection module 4 is respectively connected to the injection molding module 2 and the cooling module 3. The control module 5 is respectively connected to the melting module 1, the injection molding module 2, the cooling module 3, the collection module 4 and the demolding module 6;

[0083] The molten material module 1 is used to uniformly melt the injection molding raw material to obtain molten material.

[0084] The injection molding module 2 is used to lock and inject the molten material to injection mold the frequency converter housing.

[0085] The demolding module 6 is used to eject the injection-molded frequency converter housing from the injection molding module 2 to realize the self-demolding of the frequency converter housing.

[0086] The acquisition module 4 is used to collect the temperature in the injection molding module 2 and the pressure data in the pipeline of the cooling module 3 in real time to obtain the acquisition data.

[0087] The cooling module 3 is based on a liquid pump to extract the coolant in the cooling tower to realize water-cooling heat dissipation of the molten material in the injection molding module 2, and accelerate the cooling and molding of the frequency converter housing.

[0088] The control module 5 is used to control the operation of the other modules.

[0089] In the embodiment of the present invention, the control module 5 controls the molten material module 1 to uniformly melt the injection molding raw material to obtain molten material; the injection molding module 2 locks and injects the molten material to injection mold the frequency converter housing, the demolding module 6 ejects the injection-molded frequency converter housing from the injection molding module 2 to realize the self-demolding of the frequency converter housing, the acquisition module 4 collects the temperature in the injection molding module 2 and the pressure data in the pipeline of the cooling module 3 in real time to obtain the acquisition data; the cooling module 3 is further based on a liquid pump to extract the coolant in the cooling tower to realize water-cooling heat dissipation of the molten material in the injection molding module 2, and accelerate the cooling and molding of the frequency converter housing.

[0090] Further, the injection molding module 2 includes an injection mold 7, an injection unit 8, a buffer unit 9 and a guiding unit 10, and the injection mold 7 is respectively connected to the injection unit 8, the buffer unit 9 and the guiding unit 10.

[0091] The injection mold 7 is used to injection mold the frequency converter housing.

[0092] The injection unit 8 is used to inject the molten material in the molten material module 1 into the injection mold 7.

[0093] The buffer unit 9 is used to buffer and protect the injection mold 7 when the injection mold 7 is locked.

[0094] The guiding unit 10 is used to guide the direction when the injection mold 7 is in use.

[0095] In an embodiment of the present invention, the injection mold 7 locks to perform injection molding for producing a frequency converter housing. The injection unit 8 injects the molten material in the molten material module 1 into the injection mold 7. When the buffer unit 9 locks the injection mold 7, it performs pressure buffering protection on the injection mold 7 to prevent damage or deformation of the mold caused by excessive pressure when the injection mold 7 closes, improving the service life of the injection mold 7. The guiding unit 10 is used for guiding the direction when the injection mold 7 closes to prevent the injection mold 7 from shifting when it closes.

[0096] Further, the control module 5 includes a receiving unit 11, an arithmetic unit 12, and a control unit 13, and the receiving unit 11, the arithmetic unit 12, and the control unit 13 are connected in sequence;

[0097] The receiving unit 11 is used to receive the acquisition data transmitted by the acquisition module 4;

[0098] The arithmetic unit 12 performs control logic operation based on the acquisition data in combination with a preset temperature target value range and a coolant pressure target value range to obtain a control instruction;

[0099] The control unit 13 dynamically adjusts the output of the cooling module 3 based on the control instruction and controls the operation of the remaining modules.

[0100] In an embodiment of the present invention, the receiving unit 11 receives the acquisition data transmitted by the acquisition module 4. The arithmetic unit 12 performs control logic operation based on the acquisition data in combination with a preset temperature target value range and a coolant pressure target value range to obtain a control instruction. The control unit 13 dynamically adjusts the output of the cooling module 3 based on the control instruction and controls the operation of the remaining modules.

[0101] The above-disclosed is only a preferred embodiment of a water-cooled circulating injection mold and injection method for frequency converter processing according to the present invention. Of course, it cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A water-cooled circulating injection molding method for processing an inverter, characterized in that, It includes the following steps: Feed and melt the material in the melting module, and lock the injection molding module to inject the molten material; The acquisition module collects the temperature in the injection molding module and the pressure data in the pipeline of the cooling module in real time to obtain acquisition data; The control module performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range, obtains control instructions, and dynamically adjusts the output of the cooling module until the molten material cools and solidifies; The injection molding module opens the mold, the demolding module operates and ejects the inverter housing, and detects the appearance quality of the inverter housing.

2. The water-cooled circulating injection molding method for processing an inverter as described in claim 1, characterized in that; The specific method of feeding and melting the material in the melting module and locking the injection molding module to inject the molten material: Obtain injection molding raw materials, and screen and remove impurities in the raw materials to obtain pure raw materials; Add the pure raw materials into the melting module and perform melting treatment to obtain molten materials; Detect the injection molding module, confirm that there is no peculiar smell, lock the injection molding module and inject the molten material.

3. The water-cooled circulating injection molding method for processing frequency converters as described in claim 1, Characterized in that; The specific method of the acquisition module collecting the temperature in the injection molding module and the pressure data in the pipeline of the cooling module in real time to obtain acquisition data: The acquisition module collects the temperature in the injection molding module in real time to obtain temperature data; The acquisition module collects the pressure data in the pipeline of the cooling module in real time to obtain coolant pressure data; Perform filtering and normalization processing on the temperature data and the coolant pressure data to obtain acquisition data.

4. The water-cooled circulating injection molding method for processing an inverter as described in claim 1, characterized in that; The specific method of the control module performing control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range, obtaining control instructions, and dynamically adjusting the output of the cooling module until the molten material cools and solidifies: The control module performs control logic transportation based on the acquisition data in combination with the preset temperature target value range and the coolant pressure target value range to obtain control instructions; The control module dynamically adjusts the output of the cooling module based on the control instructions until the molten material cools and solidifies.

5. A water-cooled circulating injection mold for inverter processing, which is applied to the water-cooled circulating injection method for inverter processing according to any one of claims 1-4. Characterized in that; It includes a melting module, an injection molding module, a cooling module, an acquisition module, a control module and a demolding module. The melting module, the injection molding module and the demolding module are connected in sequence. The cooling module is connected to the injection molding module. The acquisition module is respectively connected to the injection molding module and the cooling module. The control module is respectively connected to the melting module, the injection molding module, the cooling module, the acquisition module and the demolding module; The melting module is used to evenly melt the injection molding raw materials and obtain molten materials; The injection molding module is used to lock and inject the molten material to injection mold the inverter housing; The demolding module is used to eject the injection-molded inverter housing from the injection molding module to realize the automatic demolding of the inverter housing; The acquisition module is used to collect the temperature in the injection molding module and the pressure data in the pipeline of the cooling module in real time to obtain acquisition data; The cooling module is based on a liquid pump to extract the coolant in the cooling tower to realize water-cooled heat dissipation of the molten material in the injection molding module, and accelerate the cooling and molding of the inverter housing; The control module is used to control the operation of the other modules.

6. The water-cooled circulating injection mold processed by the frequency converter according to claim 5, It is characterized in that; The injection molding module includes an injection mold, an injection unit, a buffer unit and a guiding unit, and the injection mold is respectively connected to the injection unit, the buffer unit and the guiding unit; The injection mold is used for injection molding the frequency converter housing; The injection unit is used to inject the molten material in the molten material module into the injection mold; The buffer unit is used to perform pressure buffer protection on the injection mold when the injection mold is locked; The guiding unit is used for direction guiding when the injection mold is in operation.

7. The water-cooled circulating injection mold processed by the frequency converter as described in claim 5, It is characterized in that; The control module includes a receiving unit, an arithmetic unit and a control unit, and the receiving unit, the arithmetic unit and the control unit are connected in sequence; The receiving unit is used to receive the collected data transmitted by the collection module; The arithmetic unit performs control logic transportation based on the collected data in combination with the preset temperature target value range and the coolant pressure target value range to obtain a control instruction; The control unit dynamically adjusts the output of the cooling module based on the control instruction and controls the operation of the other modules.

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