Control methods, devices, equipment and storage media of hot press

Abstract

This invention discloses a control method, apparatus, equipment, and storage medium for a hot press. The control method is applied to a hot press, which includes thermocouple sensing wires and is connected to a preset adjustment device to regulate the temperature of the hot press. The control method includes: testing the temperature change of the processed material using the thermocouple sensing wires to obtain material temperature data; selecting adjustment parameter values ​​from candidate parameter values ​​based on the material temperature data; and adjusting the built-in preset adjustment device if the adjustment parameter value is not within a preset parameter threshold range, so that the adjustment parameter value is within the parameter threshold range. This invention can adjust the processing parameters in real time according to a pre-programmed parameter range to bring the processing parameters within the pre-programmed parameter range, thereby reducing the impact on the product.

Description

Technical Field

[0001] This invention relates to the field of material processing technology, and in particular to a control method, apparatus, equipment and storage medium for a hot press. Background Technology

[0002] During the operation of the hot press in the factory, changes in tooling and auxiliary materials, as well as changes in the processed materials, can cause variations in heat transfer. The original operating mode of the hot press is to process materials for a fixed period of time. However, sometimes the temperature and pressure of the processed materials cannot reach the pre-set processing parameters, which affects the quality of the products. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a control method for a hot press, which can adjust the processing parameters in real time according to a pre-programmed parameter range, so that the processing parameters reach the pre-programmed parameter range, thereby reducing the impact on the product.

[0004] The present invention also proposes a control device for a hot press.

[0005] The present invention also proposes a control device for a hot press.

[0006] The present invention also proposes a computer-readable storage medium.

[0007] In a first aspect, one embodiment of the present invention provides a control method for a hot press, applied to a hot press including a thermocouple sensing wire, and the hot press being connected to a preset adjustment device to adjust the temperature of the hot press via the preset adjustment device, the method comprising:

[0008] The temperature change of the processed material is measured by the thermocouple sensing wire to obtain the material temperature data;

[0009] Based on the material temperature data, the adjustment parameter values ​​are selected from the candidate parameter values;

[0010] If the adjustment parameter value is not within the preset parameter threshold range, adjust the built-in preset adjustment device to bring the adjustment parameter value within the parameter threshold range.

[0011] The control method of the hot press in this embodiment of the invention has at least the following beneficial effects: The temperature change of the processed material is tested in real time using thermocouple sensing wires to obtain real-time temperature change data. Several candidate parameter values ​​are calculated based on the material temperature data. A corresponding adjustment parameter value is selected from these candidate values, and the adjustment parameter value is compared with a preset parameter threshold range. If the adjustment parameter value is not within the parameter threshold range, a built-in preset adjustment device is adjusted to bring the adjusted parameter value within the parameter threshold range. By using thermocouple sensing to test the temperature change of the processed material in real time, obtaining material temperature data, and selecting adjustment parameter values ​​from several candidate parameter values ​​based on the material temperature data, and adjusting the preset adjustment device to bring the adjustment parameter value within the parameter threshold range if it is not within the parameter threshold range, the processing parameters can be adjusted in real time according to a pre-programmed parameter range to bring the processing parameters within the pre-programmed parameter range, thereby reducing the impact on the product.

[0012] According to other embodiments of the present invention, the method for controlling a hot press, wherein obtaining material temperature data by testing the temperature change of the processed material through the thermocouple sensing wire, includes:

[0013] The thermoelectric potential of the processed material is tested by the thermocouple sensing wire to obtain the target thermoelectric potential.

[0014] The material temperature data is obtained by searching the temperature data in a preset temperature scale table based on the target thermoelectric potential.

[0015] According to other embodiments of the present invention, a control method for a hot press includes adjusting the regulating parameter value, which includes a heating rate, and the parameter threshold range, which includes a heating rate threshold range. The preset regulating device includes a cooling tower and a heat transfer oil tank. If the regulating parameter value is not within the preset parameter threshold range, adjusting the built-in preset regulating device to bring the regulating parameter value within the parameter threshold range includes:

[0016] If the heating rate is greater than the upper limit of the heating rate threshold range, increase the cooling water flow rate of the cooling tower opening and decrease the hot oil flow rate of the heat transfer oil tank opening, so that the heating rate is reduced to the heating rate threshold range.

[0017] If the heating rate is less than the lower limit of the heating rate threshold range, the cooling water flow rate opening of the cooling tower is reduced, and the hot oil flow rate opening of the heat transfer oil tank is increased, so that the heating rate is increased to the heating rate threshold range.

[0018] According to other embodiments of the present invention, a control method for a hot press, wherein the adjustment parameter value includes a pressure at the pressure transition point, the parameter threshold range includes a pressure threshold, the preset adjustment device includes the press, and the method further includes adjusting the built-in preset adjustment device to bring the adjustment parameter value within the preset parameter threshold range if the adjustment parameter value is not within the preset parameter threshold range, the method further comprising:

[0019] If the pressure at the pressure transition point is greater than the pressure threshold, the pressure applied by the press to the processed material is reduced so that the pressure at the pressure transition point is reduced to the pressure threshold.

[0020] If the pressure at the pressure transfer point is less than the pressure threshold, the pressure applied by the press to the material being processed is increased so that the pressure at the pressure transfer point is increased to the pressure threshold.

[0021] According to other embodiments of the present invention, a control method for a hot press includes the following: the adjustment parameter value includes a temperature duration, the parameter threshold range includes a duration threshold range, the preset adjustment device includes a cooling tower and a heat transfer oil tank, and if the adjustment parameter value is not within the preset parameter threshold range, the built-in preset adjustment device is adjusted to bring the adjustment parameter value within the parameter threshold range.

[0022] If the duration of the temperature exceeds the upper limit of the duration threshold range, increase the opening time of the cooling tower and decrease the opening time of the heat transfer oil tank to reduce the duration of the temperature to within the duration threshold range.

[0023] If the duration of the temperature is less than the lower limit of the duration threshold range, the time for opening the cooling tower and the heat transfer oil tank is reduced to increase the duration of the temperature to within the duration threshold range.

[0024] According to other embodiments of the present invention, a control method for a hot press, wherein the preset adjustment device includes a programming device, and the step of adjusting the built-in preset adjustment device to bring the adjustment parameter value within the preset parameter threshold range if the adjustment parameter value is not within the preset parameter threshold range, further includes:

[0025] If the duration of the temperature exceeds the upper limit of the duration threshold range, the execution time of the program by the program device is reduced so that the duration of the temperature is reduced to the duration threshold range.

[0026] If the duration of the temperature is less than the lower limit of the duration threshold range, the execution time of the program by the program device is increased so that the duration of the temperature is reduced to within the duration threshold range.

[0027] According to other embodiments of the present invention, a control method for a hot press includes a cooling rate as the adjustment parameter value, a cooling rate threshold range as the parameter threshold range, a preset adjustment device including a cooling tower and a heat transfer oil tank, and adjusting the built-in preset adjustment device to bring the adjustment parameter value within the preset parameter threshold range if the adjustment parameter value is not within the preset parameter threshold range. The method further includes:

[0028] If the cooling rate is greater than the upper limit of the cooling rate threshold range, reduce the cooling water flow of the cooling tower opening and increase the hot oil flow of the heat transfer oil tank opening, so that the cooling rate is reduced to the cooling rate threshold range.

[0029] If the cooling rate is less than the lower limit of the cooling rate threshold range, increase the cooling water flow rate of the cooling tower opening and decrease the hot oil flow rate of the heat transfer oil tank opening, so that the cooling rate is increased to the cooling rate threshold range.

[0030] Secondly, one embodiment of the present invention provides a control device for a hot press, applied to a hot press, the hot press including a thermocouple sensing wire, and the hot press being connected to a preset adjustment device to adjust the temperature of the hot press through the preset adjustment device, the device comprising:

[0031] The material temperature acquisition module is used to test the temperature change of the processed material through the thermocouple sensing wire to obtain material temperature data.

[0032] The adjustment parameter filtering module is used to filter adjustment parameter values ​​from candidate parameter values ​​based on the material temperature data.

[0033] The parameter adjustment module, if the adjustment parameter value is not within the preset parameter threshold range, is used to adjust the built-in preset adjustment device so that the adjustment parameter value is within the parameter threshold range.

[0034] The control device of the hot press in this embodiment of the invention has at least the following beneficial effects: The material temperature acquisition module tests the temperature change of the processed material in real time using thermocouple sensing wires to obtain real-time temperature change data. The adjustment parameter screening module calculates several candidate parameter values ​​based on the material temperature data and selects the corresponding adjustment parameter value from these candidate values. The parameter adjustment module compares the adjustment parameter value with a preset parameter threshold range. If the adjustment parameter value is not within the parameter threshold range, the built-in preset adjustment device is adjusted to adjust the parameter value so that the adjusted parameter value is within the parameter threshold range. By testing the temperature change data of the processed material in real time using thermocouple sensing, obtaining material temperature data, and selecting adjustment parameter values ​​from several candidate parameter values ​​based on the material temperature data, and adjusting the preset adjustment device to bring the adjustment parameter value within the parameter threshold range if the adjustment parameter value is not within the parameter threshold range, the processing parameters can be adjusted in real time according to the predetermined parameter range to bring the processing parameters to the predetermined parameter range, thereby reducing the impact on the product.

[0035] Thirdly, one embodiment of the present invention provides a control device for a hot press, comprising:

[0036] At least one processor, and,

[0037] A memory communicatively connected to the at least one processor; wherein,

[0038] The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the control method for the hot press as described in the first aspect.

[0039] Fourthly, one embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method for the hot press as described in the first aspect.

[0040] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description and the accompanying drawings. Attached Figure Description

[0041] Figure 1 This is a schematic flowchart of a specific embodiment of the control method for the hot press in this invention.

[0042] Figure 2 yes Figure 1A schematic flowchart of a specific embodiment of step S101;

[0043] Figure 3 yes Figure 1 A schematic diagram of a specific embodiment of step S103;

[0044] Figure 4 yes Figure 1 A schematic diagram of another specific embodiment of step S103;

[0045] Figure 5 yes Figure 1 A schematic diagram of another specific embodiment of step S103;

[0046] Figure 6 yes Figure 1 A schematic diagram of another specific embodiment of step S103;

[0047] Figure 7 yes Figure 1 A schematic diagram of another specific embodiment of step S103;

[0048] Figure 8 This is a module block diagram of a specific embodiment of the control device for the hot press in this invention.

[0049] Figure 9 This is a schematic diagram of a specific embodiment of the control device for the hot press in this invention;

[0050] Figure 10 This is a schematic diagram of another specific embodiment of the control device for the hot press in this invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] Material temperature acquisition module 801, parameter adjustment and screening module 802, parameter adjustment module 803. Detailed Implementation

[0053] The following will describe the concept and technical effects of the present invention clearly and completely with reference to the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0055] It should be noted that although the system diagram shows functional modules and the flowchart shows the logical order, in some cases, the steps shown or described may be executed in a different order than the module division in the system or the order in the flowchart.

[0056] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0057] In the description of the embodiments of the present invention, the term "several" means one or more, and the term "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number, while the terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features, and not as indicating or implying relative importance, the number of indicated technical features, or the order of the indicated technical features.

[0058] Hot presses primarily heat materials by transferring heat through hot oil pipes within a hot plate, while simultaneously applying pressure to the materials using hydraulic cylinders. In current production, changes in tooling and auxiliary materials, as well as variations in the materials being processed, can cause differences in the heating of these materials during heat transfer. The original operating mode involved processing within a fixed time program, which could result in the temperature and pressure of the processed materials failing to reach the predetermined parameters, thus affecting product quality. For example, with tooling and auxiliary materials, given a fixed specific heat capacity (fixed material type) and a fixed amount of absorbed heat (fixed program), increasing the volume of the tooling and auxiliary materials would reduce the heat absorbed by the processed material. Similarly, decreasing the volume of the tooling and auxiliary materials would increase the heat absorbed by the processed material; both scenarios negatively impact the quality of the processed materials.

[0059] Within a fixed time frame, when the volume of the tooling and auxiliary materials increases, the heat absorption of the processed material decreases, and the corresponding heating rate may fall below 1.5℃ / min, which is considered an abnormal region. Similarly, when the volume of the tooling and auxiliary materials decreases, the heat absorption of the processed material increases, and the corresponding heating rate may fall above 2.5℃ / min, which is also an abnormal region.

[0060] Because the program is fixed (the required temperature and time are both fixed), the flow time and flow rate of the hot oil in the hot plate pipe are also fixed values. Therefore, Q is a fixed value, and C of the tooling and auxiliary materials is a specific value. According to the formula: C = Q / m * Δt, when the volume of the tooling and auxiliary materials increases, the mass m will increase, the temperature difference Δt will decrease, and the heating rate may fall below 1.5℃ / min. Similarly, when the volume of the tooling and auxiliary materials decreases, the mass m will decrease, the temperature difference Δt will increase, and the heating rate may fall above 2.5℃ / min.

[0061] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a control method for a hot press, which can adjust the processing parameters in real time according to a pre-programmed parameter range, so that the processing parameters reach the pre-programmed parameter range, thereby reducing the impact on the product.

[0062] Please refer to Figure 1 , Figure 1 A flowchart illustrating the control method of a hot press in an embodiment of the present invention is shown. In some embodiments, the control method of the hot press is applied to a hot press, which includes a thermocouple sensing wire and is connected to a preset adjustment device to adjust the temperature of the hot press. The control method of the hot press specifically includes, but is not limited to, steps S101 to S103.

[0063] Step S101: The temperature change of the processed material is measured by a thermocouple sensing wire to obtain the material temperature data;

[0064] Step S102: Select adjustment parameter values ​​from candidate parameter values ​​based on material temperature data;

[0065] Step S103: If the adjustment parameter value is not within the preset parameter threshold range, adjust the built-in preset adjustment device to make the adjustment parameter value within the parameter threshold range.

[0066] In steps S101 to S103 of this embodiment, the temperature change of the processed material is tested in real time using a thermocouple sensing wire to obtain real-time temperature change data. Several candidate parameter values ​​are calculated based on this data. A corresponding adjustment parameter value is then selected from these candidate values ​​and compared with a preset parameter threshold range. If the adjustment parameter value is not within the threshold range, a built-in preset adjustment device is adjusted to bring the adjusted parameter value within the threshold range. By using thermocouple sensing to test the temperature change of the processed material in real time, and selecting adjustment parameter values ​​from several candidate values ​​based on this data, and adjusting the preset adjustment device to bring the adjustment parameter value within the threshold range, the processing parameters can be adjusted in real time according to a pre-defined parameter range, thereby reducing the impact on the product.

[0067] Please refer to Figure 2 , Figure 2 A flowchart illustrating the control method of a hot press in an embodiment of the present invention is shown. In some embodiments, the temperature change value of the processed material is measured by a thermocouple sensing wire to obtain material temperature data, including but not limited to steps S201 to S202.

[0068] Step S201: Measure the thermoelectric potential of the processed material using a thermocouple sensing wire to obtain the target thermoelectric potential.

[0069] Step S202: Based on the target thermoelectric potential, the material temperature data is obtained by searching the temperature data in the preset temperature scale table.

[0070] In steps S201 to S202 of this embodiment, the temperature of the processed material and the temperature of the preset reference terminal generate a thermoelectric potential (TEP). The TEP of the processed material is measured using a thermocouple sensing wire to obtain the target TEP. A preset temperature calibration table is then consulted based on the target TEP to obtain the corresponding material temperature data. By measuring the TEP between the processed material and the reference terminal using a thermocouple sensing wire to obtain the target TEP, and then consulting the temperature calibration table to obtain the material temperature data, the temperature change of the processed material can be measured in real time.

[0071] In some embodiments, refer to Figure 9 , Figure 9A schematic diagram of the control device for a hot press in an embodiment of the present invention is shown. The T-ends of two thermocouple sensing wires are connected to the material being processed, and the T0-ends are connected to two different conductors or semiconductors, forming a circuit. Since the temperatures of the T-ends and T0-ends are different, a target thermoelectric potential (TEP) is generated in the circuit. The direction and magnitude of the target TEP are related to the materials of the conductors, and the target TEP is related to the temperatures of the T-ends and T0-ends. The formula for calculating the target TEP is: E(t, t0) = f(T) - f(T0). The temperature change value, i.e., the material temperature data, is obtained by consulting the corresponding calibration table based on the target TEP.

[0072] It should be noted that the hot press has a built-in testing instrument, which is connected to two thermocouple sensing wires. The T0 end is the testing instrument end, where the two thermocouple sensing wires are wound together. Through heat transfer, the hot press causes the temperature of the processed material to rise, and simultaneously, the temperature at the T end of the thermocouple sensing wire also begins to rise. Based on the working principle of thermocouples, a target thermoelectric potential is generated at the T end relative to the T0 end. In a closed circuit, the testing instrument calculates the target thermoelectric potential using a formula, and the hot press converts this into temperature data using a calibration table, thus obtaining the material temperature data.

[0073] In step S102 of some embodiments, candidate parameter values ​​include heating rate, pressure at the transition point, temperature duration, and cooling rate. The heating rate and cooling rate are calculated based on material temperature data and time, and corresponding candidate parameter values ​​are selected for different temperature and time values ​​of the material temperature data to obtain the adjustment parameter values. For example, in the initial stage of material processing, the material needs to be heated, so the heating rate is selected; when the material reaches the temperature requiring transition pressure, the pressure at the transition point is selected; when the material reaches the temperature requiring solidification, the temperature duration is selected; and at the end of the material processing, the material needs to be cooled, so the cooling rate is selected.

[0074] Please refer to Figure 3 , Figure 3 A schematic flowchart of the control method for a hot press in an embodiment of the present invention is shown. In some embodiments, the adjustment parameter value includes the heating rate, the parameter threshold range includes the heating rate threshold range, and the preset adjustment device includes a cooling tower and a heat transfer oil tank; if the adjustment parameter value is not within the preset parameter threshold range, the built-in preset adjustment device is adjusted to make the adjustment parameter value within the parameter threshold range, including but not limited to steps S301 to S302.

[0075] Step S301: If the heating rate is greater than the upper limit of the heating rate threshold range, increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank to reduce the heating rate to the heating rate threshold range.

[0076] In step S302, if the heating rate is less than the lower limit of the heating rate threshold range, reduce the opening of the cooling tower and increase the opening of the heat transfer oil tank to increase the heating rate to the heating rate threshold range.

[0077] In steps S301 to S302 of this embodiment, the heating rate is acquired in real time and compared with a heating rate threshold range. If the heating rate is greater than the upper limit of the heating rate threshold range, the hot press is controlled to increase the opening of the cooling tower, thereby increasing the flow rate of cooling water, and the opening of the heat transfer oil tank is reduced, thereby reducing the flow rate of hot oil, so that the heating rate is reduced to within the heating rate threshold range. If the heating rate is less than the lower limit of the heating rate threshold range, the hot press is controlled to reduce the opening of the cooling tower, thereby reducing the flow rate of cooling water, and the opening of the heat transfer oil tank is increased, thereby increasing the flow rate of hot oil, so that the heating rate is increased to within the heating rate threshold range. By acquiring the heating rate in real time and comparing it with a heating rate threshold range, the system controls the hot press to increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank to reduce the heating rate, or decrease the opening of the cooling tower and increase the opening of the heat transfer oil tank to increase the heating rate. This allows the heating rate to be adjusted in real time according to a pre-defined heating rate threshold range, thereby reducing the impact on the product.

[0078] It should be noted that the heating rate of the processed material, from temperature a to temperature b within a certain time t, is calculated using the following formula: C1 = (ba) / t, where C1 is the heating rate. Both the cooling tower and the heat transfer oil tank are equipped with solenoid valves. The hot press controls the solenoid valves of the cooling tower and the heat transfer oil tank respectively by controlling the current, thereby adjusting the opening degree of the cooling tower and the heat transfer oil tank.

[0079] The working principle of a solenoid valve includes: a sealed chamber with through-holes at different positions, each connecting to a different oil pipe. A piston is located in the center of the sealed chamber, flanked by electromagnets. When the coils of the electromagnets are energized, the solenoid valve is attracted. By controlling the movement of the solenoid valve, different drain holes are opened or closed. The inlet hole is normally open, allowing hydraulic oil to enter different drain pipes. The pressure of the hydraulic oil then pushes the piston, which in turn moves the piston rod. The piston rod drives the mechanical device, thus opening and closing the solenoid valve.

[0080] The principle of adjusting the heating rate includes the following calculations: Q = C * T * M, M = ρ * V, V = S * L, resulting in: Q = C * T * ρ * V. Where Q is the heat of the processed material, C is the specific heat capacity of the heat transfer oil, T is the temperature of the heat transfer oil, M is the mass of the heat transfer oil, ρ is the density of the heat transfer oil, V is the volume of the heat transfer oil, S is the cross-sectional area of ​​the heat transfer oil, and L is the length of the heat transfer oil pipe.

[0081] The flow rates of cooling water and heat transfer oil per unit time can be controlled by adjusting the opening degree of the solenoid valves in the cooling tower and heat transfer oil tank. The cooling water lowers the temperature of the heat transfer oil, thereby regulating its temperature. When the opening degree of the heat transfer oil tank increases, V and T increase, which in turn increases Q. With the processed material and the heat transfer coefficient α remaining constant, the heat transferred to the processed material per unit time increases, thus improving the heating rate. Specifically, the heat transfer oil tank raises the temperature of the heat transfer oil through a combustion boiler. The heat transfer oil then enters the storage tank through oil pipes. After heat storage and conversion in the storage tank, the heat transfer oil enters the hot plate pipes of the hot press through oil pipes again.

[0082] For example, the program-defined heating rate threshold range is 1.5 to 2.5 °C / min. If the heating rate is lower than 1.5 °C / min, the hot press automatically reduces the opening of the solenoid valve of the cooling tower to increase the temperature of the heat transfer oil. It also automatically increases the opening of the solenoid valve of the heat transfer oil tank and increases the flow rate of the heat transfer oil, thereby increasing the heating rate and keeping it within the heating rate threshold range.

[0083] Similarly, if the heating rate is higher than 2.5℃ / min, the hot press will automatically increase the opening of the solenoid valve of the cooling tower to reduce the temperature of the heat transfer oil, and automatically reduce the opening of the solenoid valve of the heat transfer oil tank, or close the solenoid valve of the heat transfer oil tank to reduce the flow rate of the heat transfer oil, thereby reducing the heating rate and keeping the heating rate within the heating rate threshold range.

[0084] Please refer to Figure 4 , Figure 4 A flowchart illustrating the control method of a hot press in an embodiment of the present invention is shown. In some embodiments, the adjustment parameter value includes the pressure at the pressure transfer point, the parameter threshold range includes a pressure threshold, and the preset adjustment device includes the press; if the adjustment parameter value is not within the preset parameter threshold range, the built-in preset adjustment device is adjusted to make the adjustment parameter value within the parameter threshold range, which also includes, but is not limited to, steps S401 to S402.

[0085] Step S401: If the pressure at the pressure transfer point is greater than the pressure threshold, reduce the pressure applied by the press to the material being processed so that the pressure at the pressure transfer point is reduced to the pressure threshold.

[0086] Step S402: If the pressure at the switching point is less than the pressure threshold, increase the pressure applied by the press to the material being processed so that the pressure at the switching point is increased to the pressure threshold.

[0087] In steps S401 to S402 of this embodiment, the pressure at the transition point is acquired in real time and compared with a pressure threshold. If the pressure at the transition point is greater than the pressure threshold, the hot press is controlled to reduce the pressure applied to the processed material to lower the pressure at the transition point to the pressure threshold. If the pressure at the transition point is less than the pressure threshold, the hot press is controlled to increase the pressure applied to the processed material to increase the pressure at the transition point to the pressure threshold. By acquiring the pressure at the transition point in real time and comparing it with the pressure threshold, and controlling the hot press to reduce the pressure applied to the processed material to lower the pressure at the transition point, or to increase the pressure applied to the processed material to increase the pressure at the transition point, the pressure at the transition point can be adjusted in real time according to a predetermined pressure threshold, thereby reducing the impact on the product.

[0088] It should be noted that the pressure threshold is the maximum pressure value preset by the program. When the temperature of the processed material reaches the preset temperature range, the pressure is adjusted to the maximum pressure value preset by the program, so that the pressure reaches the maximum pressure value within the preset temperature range, and the pressure is maintained at the maximum pressure value for a preset time, so that the processed material is fully processed under the maximum pressure value condition.

[0089] For example, when the temperature of the processed material reaches between temperature c and d (d > c), the material needs to be pressure-reduced when it reaches the pressure reduction point. For example, if the program-defined pressure threshold range is 420 psi and the pressure reduction point is 80–100°C, when the temperature of the processed material reaches 80–100°C, the hot press sends a control signal to the press's hydraulic pump, which increases its power to raise the hydraulic oil pressure to 420 psi.

[0090] Please refer to Figure 5 , Figure 5 A schematic flowchart of the control method for a hot press in an embodiment of the present invention is shown. In some embodiments, the adjustment parameter value includes the temperature duration, the parameter threshold range includes the duration threshold range, and the preset adjustment device includes a cooling tower and a heat transfer oil tank; if the adjustment parameter value is not within the preset parameter threshold range, the built-in preset adjustment device is adjusted to make the adjustment parameter value within the parameter threshold range, which also includes, but is not limited to, steps S501 to S502.

[0091] Step S501: If the temperature duration is greater than the upper limit of the duration threshold range, increase the opening time of the cooling tower and decrease the opening time of the heat transfer oil tank to reduce the temperature duration to within the duration threshold range.

[0092] Step S502: If the temperature duration is less than the lower limit of the duration threshold range, reduce the time of opening the cooling tower and the heat transfer oil tank to increase the temperature duration to the duration threshold range.

[0093] In steps S501 to S502 of this embodiment, the temperature duration is acquired in real time and compared with a duration threshold range. If the temperature duration is greater than the upper limit of the duration threshold range, the hot press is controlled to increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank for a period of time to reduce the temperature duration to within the duration threshold range. If the temperature duration is less than the lower limit of the duration threshold range, the hot press is controlled to decrease the opening of the cooling tower and increase the opening of the heat transfer oil tank for a period of time to increase the temperature duration to within the duration threshold range. By acquiring the temperature duration in real time and comparing it with the duration threshold range, and controlling the hot press to increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank for a period of time based on the comparison result to reduce the temperature duration, or decrease the opening of the cooling tower and increase the opening of the heat transfer oil tank for a period of time to increase the temperature duration, the temperature duration can be adjusted in real time according to the predetermined duration threshold range to ensure that the temperature duration reaches the predetermined duration threshold range, thereby reducing the impact on the product.

[0094] It should be noted that, while adjusting the opening of the cooling tower and the heat transfer oil tank, the temperature of the processed material is maintained at the predetermined temperature, thereby accelerating the achievement of the temperature target.

[0095] For example, when the processed material reaches a predetermined temperature, the processed material needs to be cured. For example, the predetermined duration threshold range of the program is 80 to 100 minutes. When the temperature of the processed material reaches 180°C, the hot press controls the temperature of the processed material to be at 180°C and maintains the temperature for a certain duration. If the temperature duration is less than 80 minutes, the hot press controls the time for increasing the opening of the solenoid valve. If the temperature duration is greater than 100 minutes, the hot press controls the time for decreasing the opening of the solenoid valve.

[0096] Please refer to Figure 6 , Figure 6 A flowchart illustrating the control method of a hot press in an embodiment of the present invention is shown. In some embodiments, the preset adjustment device includes a program device; if the adjustment parameter value is not within a preset parameter threshold range, the built-in preset adjustment device is adjusted to bring the adjustment parameter value within the parameter threshold range, which also includes, but is not limited to, steps S601 to S602.

[0097] Step S601: If the temperature duration is greater than the upper limit of the duration threshold range, reduce the execution time of the program by the program device to reduce the temperature duration to within the duration threshold range.

[0098] Step S602: If the temperature duration is less than the lower limit of the duration threshold range, increase the execution time of the program by the program device to reduce the temperature duration to within the duration threshold range.

[0099] In steps S601 to S602 of this embodiment, the temperature duration is acquired in real time and compared with a duration threshold range. If the temperature duration is greater than the upper limit of the duration threshold range, the hot press is controlled to reduce the execution time of the program by the programming device, so that the temperature duration is reduced to within the duration threshold range. If the temperature duration is less than the lower limit of the duration threshold range, the hot press is controlled to increase the execution time of the program by the programming device, so that the temperature duration is increased to within the duration threshold range. By acquiring the temperature duration in real time and comparing it with the duration threshold range, and controlling the hot press to reduce the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by decreasing the execution time of the program by increasing ...

[0100] Please refer to Figure 7 , Figure 7 A flowchart illustrating the control method of a hot press in an embodiment of the present invention is shown. In some embodiments, the adjustment parameter value includes the cooling rate, the parameter threshold range includes the cooling rate threshold range, and the preset adjustment device includes a cooling tower and a heat transfer oil tank; if the adjustment parameter value is not within the preset parameter threshold range, the built-in preset adjustment device is adjusted to make the adjustment parameter value within the parameter threshold range, which also includes, but is not limited to, steps S701 to S702.

[0101] Step S701: If the cooling rate is greater than the upper limit of the cooling rate threshold range, reduce the opening of the cooling tower and increase the opening of the heat transfer oil tank to reduce the cooling rate to within the cooling rate threshold range.

[0102] In step S702, if the cooling rate is less than the lower limit of the cooling rate threshold range, increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank to increase the cooling rate to the cooling rate threshold range.

[0103] In steps S701 to S702 of this embodiment, the cooling rate is acquired in real time and compared with a cooling rate threshold range. If the cooling rate is greater than the upper limit of the cooling rate threshold range, the hot press is controlled to reduce the opening of the cooling tower, thereby reducing the flow rate of cooling water, and the opening of the heat transfer oil tank is increased, thereby increasing the flow rate of hot oil, so that the cooling rate is reduced to within the cooling rate threshold range. If the cooling rate is less than the lower limit of the cooling rate threshold range, the hot press is controlled to increase the opening of the cooling tower, thereby increasing the flow rate of cooling water, and the opening of the heat transfer oil tank is reduced, thereby reducing the flow rate of hot oil, so that the cooling rate is increased to within the cooling rate threshold range. By acquiring the cooling rate in real time and comparing it with a cooling rate threshold range, the system controls the hot press to reduce the opening of the cooling tower and increase the opening of the heat transfer oil tank to lower the cooling rate, or to increase the opening of the cooling tower and decrease the opening of the heat transfer oil tank to increase the cooling rate. This allows the cooling rate to be adjusted in real time according to a pre-defined cooling rate threshold range, thereby reducing the impact on the product.

[0104] For example, the program-defined cooling rate threshold range is 1.5 to 2.5℃ / min. If the cooling rate is lower than 1.5℃ / min, the hot press automatically increases the opening of the solenoid valve of the cooling tower to reduce the temperature of the heat transfer oil, and automatically reduces the opening of the solenoid valve of the heat transfer oil tank to reduce the flow rate of the heat transfer oil, thereby increasing the cooling rate and keeping the cooling rate within the cooling rate threshold range.

[0105] Similarly, if the cooling rate is higher than 2.5℃ / min, the hot press will automatically reduce the opening of the solenoid valve of the cooling tower to increase the temperature of the heat transfer oil, and automatically increase the opening of the solenoid valve of the heat transfer oil tank to increase the flow rate of the heat transfer oil, thereby reducing the cooling rate and keeping the cooling rate within the cooling rate threshold range.

[0106] Reference Figure 10 , Figure 10 A schematic diagram of an embodiment of the control device for a hot press is shown. Figure 10 In the diagram, A represents the heat transfer oil tank, B represents the hot platen of the hot press (on which the processed material is placed), C represents the cooling water tower, and D represents the storage tank. The heat transfer oil tank first transfers heat transfer oil to the storage tank via oil pipes. Then, the hot press controls the opening of the heat transfer oil via a solenoid valve corresponding to the heat transfer oil tank. After passing through the solenoid valve, the heat transfer oil enters the cooling water area for cooling. The cooled heat transfer oil then enters the hot platen to heat the processed material and returns to the heat transfer oil tank through the oil pipe loop. The hot press controls the opening of the cooling water via a solenoid valve corresponding to the cooling water tower. The cooling water enters the cooling water area after passing through the solenoid valve to cool the heat transfer oil and returns to the cooling water tower through the water pipe loop.

[0107] In addition, this application also discloses a control device for a hot press, please refer to... Figure 8 , Figure 8 This invention discloses a block diagram of a control device for a hot press, as shown in one embodiment. Applied to a hot press, the hot press includes thermocouple sensing wires and is connected to a preset adjustment device to regulate the temperature of the hot press. The hot press control device can implement the aforementioned control method and includes: a material temperature acquisition module 801, an adjustment parameter filtering module 802, and a parameter adjustment module 803. The material temperature acquisition module 801, the adjustment parameter filtering module 802, and the parameter adjustment module 803 are all communicatively connected.

[0108] The material temperature acquisition module 801 obtains material temperature data by measuring the temperature change of the processed material using thermocouple sensing wires. The adjustment parameter screening module 802 filters adjustment parameter values ​​from candidate parameter values ​​based on the material temperature data. If the adjustment parameter value is not within the preset parameter threshold range, the parameter adjustment module 803 adjusts the built-in preset adjustment device to bring the adjustment parameter value within the parameter threshold range.

[0109] The material temperature acquisition module 801 uses thermocouple sensing wires to test the temperature change of the processed material in real time, obtaining material temperature data. The parameter adjustment module 802 calculates several candidate parameter values ​​based on the material temperature data and selects the corresponding adjustment parameter value from these candidates. The parameter adjustment module 803 compares the adjustment parameter value with a preset parameter threshold range. If the adjustment parameter value is not within the threshold range, a built-in preset adjustment device is adjusted to bring the adjusted parameter value within the threshold range. By using thermocouple sensing to test the temperature change of the processed material in real time, and selecting adjustment parameter values ​​from several candidate values ​​based on this material temperature data, and adjusting the preset adjustment device to bring the adjustment parameter value within the threshold range if it is not within the threshold range, the processing parameters can be adjusted in real time according to a pre-programmed parameter range to reduce the impact on the product.

[0110] The operation process of the control device of the hot press in this embodiment is specifically described above. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The control method for the hot press includes steps S101 to S103, S201 and S202, S301 and S302, S401 and S402, S501 and S502, S601 and S602, and S701 and S702, which will not be described in detail here.

[0111] Another embodiment of the present invention discloses a control device for a hot press, comprising: at least one processor, and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform, for example... Figure 1 Control method steps S101 to S103 Figure 2 Control method steps S201 and S202 Figure 3 Control method steps S301 and S302 Figure 4 Control method steps S401 and S402 Figure 5 Control method steps S501 and S502 Figure 6 The control method steps S601 and S602 and Figure 7 The control method for the hot press in steps S701 and S702.

[0112] Another embodiment of the present invention discloses a storage medium, the storage medium comprising: storing computer-executable instructions for causing a computer to perform... Figure 1 Control method steps S101 to S103 Figure 2 Control method steps S201 and S202 Figure 3 Control method steps S301 and S302 Figure 4 Control method steps S401 and S402 Figure 5 Control method steps S501 and S502 Figure 6 The control method steps S601 and S602 and Figure 7 The control method for the hot press in steps S701 and S702.

[0113] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0114] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0115] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A control method of a hot press, characterized by, The method is applied to a hot press comprising a thermocouple temperature sensing wire and connected to a preset adjusting device to adjust the temperature of the hot press by the preset adjusting device, and the method comprises: testing the temperature change value of the processed material by the thermocouple temperature sensing wire to obtain material temperature data; screening an adjusting parameter value from candidate parameter values according to the material temperature data; if the adjusting parameter value is not within a preset parameter threshold range, adjusting the built-in preset adjusting device to make the adjusting parameter value within the parameter threshold range; wherein the parameter threshold range is a parameter range predetermined according to a program; the adjusting parameter value comprises a temperature rise rate, the parameter threshold range comprises a temperature rise rate threshold range, the preset adjusting device comprises a cooling water tower and a heat conducting oil tank, and if the adjusting parameter value is not within the preset parameter threshold range, adjusting the built-in preset adjusting device to make the adjusting parameter value within the parameter threshold range, which comprises: if the temperature rise rate is greater than the upper limit value of the temperature rise rate threshold range, increasing the opening degree of the cooling water tower and decreasing the opening degree of the heat conducting oil tank to reduce the temperature rise rate to within the temperature rise rate threshold range; if the temperature rise rate is less than the lower limit value of the temperature rise rate threshold range, decreasing the opening degree of the cooling water tower and increasing the opening degree of the heat conducting oil tank to increase the temperature rise rate to within the temperature rise rate threshold range; the adjusting parameter value comprises a temperature drop rate, the parameter threshold range comprises a temperature drop rate threshold range, the preset adjusting device comprises a cooling water tower and a heat conducting oil tank, and if the adjusting parameter value is not within the preset parameter threshold range, adjusting the built-in preset adjusting device to make the adjusting parameter value within the parameter threshold range, which further comprises: if the temperature drop rate is greater than the upper limit value of the temperature drop rate threshold range, decreasing the opening degree of the cooling water tower and increasing the opening degree of the heat conducting oil tank to reduce the temperature drop rate to within the temperature drop rate threshold range; if the temperature drop rate is less than the lower limit value of the temperature drop rate threshold range, increasing the opening degree of the cooling water tower and decreasing the opening degree of the heat conducting oil tank to increase the temperature drop rate to within the temperature drop rate threshold range.

2. The control method of a hot press according to claim 1, characterized by, the testing of the temperature change value of the processed material by the thermocouple temperature sensing wire to obtain material temperature data, which comprises: testing the thermoelectric electromotive force of the processed material by the thermocouple temperature sensing wire to obtain a target thermoelectric electromotive force; performing temperature data lookup on a preset temperature scale according to the target thermoelectric electromotive force to obtain the material temperature data.

3. The control method of a hot press according to claim 1, characterized by, the adjusting parameter value comprises a pressure at a pressure transfer point, the parameter threshold range comprises a pressure threshold, and the preset adjusting device comprises a press, and if the adjusting parameter value is not within the preset parameter threshold range, adjusting the built-in preset adjusting device to make the adjusting parameter value within the parameter threshold range, which further comprises: if the pressure at the pressure transfer point is greater than the pressure threshold, reducing the pressure applied to the processed material by the press to reduce the pressure at the pressure transfer point to the pressure threshold; If the pressure of the pressure transfer point is less than the pressure threshold, the pressure of the press applied to the processed material is increased so that the pressure of the pressure transfer point is increased to the pressure threshold.

4. The control method of a hot press according to claim 1, characterized by, The adjustment parameter value includes temperature duration, the parameter threshold range includes duration threshold range, the preset adjustment device includes cooling water tower and heat conducting oil tank, and the preset adjustment device is adjusted if the adjustment parameter value is not in the preset parameter threshold range, so that the adjustment parameter value is in the parameter threshold range, and the preset adjustment device further includes: If the temperature duration is greater than the upper limit value of the duration threshold range, the time of increasing the cooling water tower and decreasing the heat conducting oil tank opening is increased, so that the temperature duration is reduced to the duration threshold range; If the temperature duration is less than the lower limit value of the duration threshold range, the time of decreasing the cooling water tower and increasing the heat conducting oil tank opening is decreased, so that the temperature duration is increased to the duration threshold range.

5. The control method of a hot press according to claim 4, characterized in that, The preset adjustment device includes program device, and the preset adjustment device is adjusted if the adjustment parameter value is not in the preset parameter threshold range, so that the adjustment parameter value is in the parameter threshold range, and the preset adjustment device further includes: If the temperature duration is greater than the upper limit value of the duration threshold range, the time of decreasing the program device is decreased, so that the temperature duration is reduced to the duration threshold range; If the temperature duration is less than the lower limit value of the duration threshold range, the time of increasing the program device is increased, so that the temperature duration is reduced to the duration threshold range.

6. A control device for a hot press, characterized by The device is applied to a hot press, the hot press includes a thermocouple temperature sensing line, and the hot press is connected with a preset adjustment device to adjust the temperature of the hot press through the preset adjustment device, and the device includes: A material temperature acquisition module is configured to test a temperature change value of the processed material through the thermocouple temperature sensing line to obtain material temperature data. An adjustment parameter screening module is configured to screen an adjustment parameter value from candidate parameter values according to the material temperature data. A parameter adjustment module is configured to adjust the preset adjustment device if the adjustment parameter value is not in a preset parameter threshold range, so that the adjustment parameter value is in the parameter threshold range; wherein the parameter threshold range is a parameter range predetermined according to a program; the parameter threshold range includes a temperature rising rate threshold range and a temperature falling rate threshold range; the adjustment parameter value includes a temperature rising rate and a temperature falling rate; and the preset adjustment device includes a cooling water tower and a heat conducting oil tank. The parameter adjustment module further includes: If the temperature rising rate is greater than the upper limit value of the temperature rising rate threshold range, the opening of the cooling water tower is increased, and the opening of the heat conducting oil tank is decreased, so that the temperature rising rate is reduced to the temperature rising rate threshold range; If the temperature rising rate is less than the lower limit value of the temperature rising rate threshold range, the opening of the cooling water tower is decreased, and the opening of the heat conducting oil tank is increased, so that the temperature rising rate is increased to the temperature rising rate threshold range; The parameter adjustment module further includes: if the cooling rate is greater than an upper limit value of the cooling rate threshold range, decreasing the cooling water tower opening degree and increasing the heat conducting oil tank opening degree to decrease the cooling rate to the cooling rate threshold range; if the cooling rate is less than a lower limit value of the cooling rate threshold range, increasing the cooling water tower opening degree and decreasing the heat conducting oil tank opening degree to increase the cooling rate to the cooling rate threshold range.

7. A control device of a hot press, characterized by comprising: comprising: at least one processor, and a memory connected with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method of the hot press according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, the computer readable storage medium stores computer executable instructions for causing a computer to perform the control method of the hot press according to any one of claims 1 to 5.

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