CN104526948B - Thermal-mechanical-magnetic multi-field coupling mold pressing forming machine - Google Patents

Abstract

The invention relates to multi-field coupling mold pressing forming equipment, and particularly relates to a thermal-mechanical-magnetic multi-field coupling mold pressing forming machine and a method for controlling the mold pressing forming condition by a control cabinet, which can be used for solving the problem that the type of equipment is lacked. The scheme is as follows: the thermal-mechanical-magnetic multi-field coupling mold pressing forming machine comprises a hydraulic machine, wherein the hydraulic machine comprises a rack and a hydraulic column head, wherein the end surface of the hydraulic column head is provided with a pressure sensor, a thermal-mechanical cooling water sleeve layer, an insulation layer, a resistor heater array and a heating withstand voltage panel; the side surface of the heating withstand voltage panel is provided with a temperature sensor connected with the control cabinet; the rack is provided with an electric coil; another temperature sensor is arranged on the surface of the electromagnetic coil; the electromagnetic coil is externally wrapped by a magnetic field cooling water sleeve layer; the surface of the inner side of the magnetic field cooling water sleeve layer is provided with a magnetic field sensor. The thermal-mechanical-magnetic multi-field coupling mold pressing forming machine has the advantages that firstly, the thermal-mechanical-magnetic field coupling mold pressing forming machine is designed; secondly, the control range is wide, the continuous operation time is long, mold pressing forming can be carried out under multi-field coupling state, single-field state or field-free state; thirdly, the fields have no interference, the reliability is high, and the control precision is high.

Description

Thermal-mechanical-magnetic multi-field coupling molding machine

technical field

The invention relates to multi-field coupling molding equipment, in particular to a thermo-mechanical-magnetic multi-field coupling molding machine.

Background technique

Magnetic functional polymer composites have excellent properties, such as electrical, optical and magnetic properties, light weight, low magnetic loss, stable at room temperature, easy processing, radiation resistance, and dielectric constant, dielectric loss, magnetic permeability, The magnetic loss basically does not change with frequency and temperature, and the molecular structure changes in a variety of ways. It is possible to make stable homogeneous fluids and components with various complex shapes, so it can be widely used in intelligent damping, isolation materials, light broadband microwave absorbers, magnetron Sensors, low magnetic loss high frequency microwave communication devices, magnetic sealing devices. If it can be combined with other functional materials, it will undoubtedly have infinitely bright application prospects. However, the application of magnetic functional polymer composites is much lower than expected, mainly because the materials always have problems such as mechanical properties and functionality that are difficult to improve at the same time. Recent studies have found that applying an external magnetic field during the molding process of magnetic functional polymer composites can effectively control the distribution of magnetic particles in the polymer matrix, which can not only effectively improve the mechanical properties of magnetic functional composite materials, but also greatly improve their functionality. This discovery laid the foundation for its wide application. Therefore, research on the processing and forming of such materials under the action of a magnetic field is being carried out extensively. As we all know, the temperature field and loading pressure are also involved in the compression molding process of magnetic functional polymer composite materials. The size of the magnetic field and loading time, temperature and heating time, loading pressure and time are the key factors controlling the structure and performance of magnetic functional polymer composites. Therefore, systematically exploring the influence of these influencing factors on the structure and properties of magnetic functional polymer composites not only plays a vital role in improving their comprehensive performance, but also has important academic and application value for the research of smart materials science.

However, there is currently no compression molding equipment that can directly perform coupling loading of force field, magnetic field and thermal field. The reason is that there are three main technical difficulties: 1. Coils are usually used to apply the variable magnetic field in the equipment. However, the heating problem caused by the thermal effect of the current in the coil will cause the temperature of the coil to rise, and the larger the magnetic field, the higher the temperature rise, which directly limits the limit value of the magnetic field and the time of continuous loading of the magnetic field. Therefore, the design and development can be continued The magnetic field generating device with high magnetic field has become one of the challenges; 2. The application of the thermal field is usually heated by a resistance wire. However, due to the fact that a magnetic field will inevitably be generated when the current passes through the resistance wire, it will affect the size and uniformity of the magnetic field to be applied in the specimen area. ; At the same time, the heat generated by the coil will affect the temperature and uniformity of the test piece area. Therefore, the second challenge is to develop a magnetic field and thermal field application method that does not interfere with the magnetic field; 3. The force field, magnetic field, and thermal field. Precision control and sensor components, as well as other parts of the instrument, often have electric and magnetic mutual interference. Often only anti-magnetic materials can be used around the magnetic field, while ensuring that the coefficient of thermal expansion is low enough, which leads to the selection of various parts of the molding equipment. Difficulty in processing, this is the third challenge. Therefore, it is of great significance to design a high-performance thermal-mechanical-magnetic multi-field coupling molding machine that can effectively realize mutual non-interference for the field of magnetic functional polymer composite materials.

Contents of the invention

The invention solves the technical problem of lack of multi-field coupling molding equipment at present, and provides a method for controlling molding conditions of a thermal-mechanical-magnetic multi-field coupling molding machine and a control box.

The present invention is achieved through the following technical proposals: The thermal-mechanical-magnetic multi-field coupling molding machine includes a hydraulic press, the hydraulic press includes a frame and an upper hydraulic column head and a lower hydraulic column head that are opposite and independently controlled to lift, and the hydraulic press The end face of the column head is sequentially provided with a pressure sensor, a thermal-mechanical cooling water jacket, an insulating layer, an array of resistance heaters, and a heating and pressure-resistant plate; the thermal-mechanical cooling water jacket is a water circulation cooling system with a water inlet and a water outlet The resistance heater array is embedded in the heating pressure-resistant plate; the side of the heating pressure-resistant plate is provided with a first temperature sensor, and the first temperature sensor is connected with a control box; the hydraulic press, resistance heater array, thermal -The force cooling water jacket layer, the pressure sensor and the control box are connected; the frame is provided with an electromagnetic coil surrounding the lower hydraulic column head, the surface of the electromagnetic coil is provided with a second temperature sensor, and the electromagnetic coil is wrapped with a magnetic field The cooling water jacket layer, the magnetic field cooling system is also a water circulation cooling system with a water inlet and a water outlet; a magnetic field sensor is provided between the inner surface of the magnetic field cooling water jacket layer, the upper hydraulic column head and the lower hydraulic column head; The magnetic field sensor, the second temperature sensor, the magnetic field cooling system and the electromagnetic coil are connected with the control box. The upper and lower hydraulic column heads of the hydraulic press apply a force field. A pressure sensor measures the magnitude of the applied force field at the head of the hydraulic column, and an insulating layer prevents electrical leakage from the resistive heater array. The thermal-mechanical cooling water jacket layer cools the insulating layer, prevents the temperature from being transmitted to the pressure sensor, and then adjusts the temperature of the resistance heater array and the pressure-resistant plate to realize precise control of the thermal field. The resistive heater array heats the pressure-resistant plate after being energized. In addition, the upper and lower hydraulic column heads and the heated pressure-resistant flat plate also play the role of a magnetic yoke, which improves the magnetic field strength and uniformity of the electromagnetic coil. The first temperature sensor measures the temperature of the heated pressure-resistant plate to precisely control the size of the heated field. The electromagnetic coil is a magnetic field generating device. The magnetic field cooling water jacket layer cools the electromagnetic coil to prevent the electromagnetic coil from being overheated due to too long energization time. The second temperature sensor measures the surface temperature of the electromagnetic coil to realize precise control of the temperature generated by the electromagnetic coil. The magnetic field sensor measures the strength of the magnetic field between the two hydraulic column heads. The control box collects the data measured by the first temperature sensor, the second temperature sensor, the magnetic field sensor, and the pressure sensor, and sends out control instructions after analysis and processing, so as to coordinate and control the current through the resistance heater array and the thermal-mechanical cooling water jacket layer Whether it works, the magnitude of the current in the electromagnetic coil, whether the magnetic field cooling water jacket layer works, and the power of the hydraulic pump of the hydraulic press, in order to achieve precise control of the molding conditions of thermal-mechanical-magnetic field coupling.

The control box includes a rectifying power supply, a programmable logic controller PLC, a data acquisition card, a signal generation module, a D/A module and a power amplifier; the programmable logic controller PLC is connected with the data acquisition card and the signal generation module; the signal The generating module is connected with the D/A module and the power amplifier; the D/A module is connected with the rectified power supply; the first temperature sensor, the second temperature sensor, the pressure sensor, the magnetic field sensor are connected with the data acquisition card of the control box; The resistance heater array and the electromagnetic coil are connected to the rectified power supply of the control box; the thermal-mechanical cooling water jacket layer, the magnetic field cooling water jacket layer and the hydraulic press are connected to the power amplifier of the control box. The programmable controller PLC is responsible for setting the molding conditions, processing, analyzing, judging and issuing control instructions to the data signals. The data acquisition card is responsible for the acquisition of each sensor data. The signal generating module is responsible for converting the control instructions issued by the programmable controller into driving signals. The D/A module converts the driving signal converted by the signal generation module into an analog signal quantity, thereby controlling the current, voltage or power output by the rectified power supply. The power amplifier amplifies the power of the driving signal converted by the signal generation module, so as to control whether the magnetic field cooling water jacket layer works, whether the thermal-mechanical cooling water jacket layer works, and the operation and power of the hydraulic pump of the hydraulic machine. A rectified power supply powers an array of electromagnetic coils and resistive heaters to generate a magnetic field or dissipate heat.

The method for the control box of the thermal-mechanical-magnetic multi-field coupling compression molding machine to control the compression molding conditions includes the following steps:

Step 101: Pre-set the compression molding conditions through the programmable controller PLC, and the compression molding conditions include magnetic field strength, thermal field, and loading pressure;

Step 102: the programmable logic controller PLC issues a command to start the magnetic field and thermal field control, and outputs the drive signal of the magnetic field and thermal field through the signal generation module;

Step 103: The D/A module performs digital-to-analog conversion on the drive signal output in step 102, and outputs an analog current or voltage signal;

Step 104: The analog current or voltage signal output by the D/A module controls the rectified power supply to supply power to the electromagnetic coil and the resistance heater array, thereby generating a magnetic field and a thermal field;

Step 105: collecting temperature and magnetic field strength data by the data acquisition card through the first temperature sensor, the second temperature sensor and the magnetic field sensor;

Step 106: The programmable controller PLC processes and analyzes the collected data, and compares it with the preset magnetic field strength and temperature conditions:

If it is greater than the preset value, the programmable controller PLC generates the driving signal of the magnetic field cooling water jacket layer and/or the thermal-mechanical cooling water jacket layer through the signal generation module, and the power amplifier amplifies the driving signal to drive the magnetic field cooling water jacket layers and/or thermo-mechanical cooling water jacket layers start to work;

If less than the preset value, then return to step 102 to restart the test;

If it is equal to the preset value, then enter step 107;

Step 107: the programmable logic controller PLC issues a force field control command, and outputs a drive signal of the force field through the signal generation module;

Step 108: The force field drive signal output in step 107 is amplified by the power amplifier to drive the hydraulic pump of the hydraulic machine, so that the upper and lower hydraulic column heads are pressed together to generate a constant pressure;

Step 109: the data acquisition card collects pressure data through the pressure sensor;

Step 110: The programmable controller PLC processes and analyzes the collected pressure data, and judges whether the preset pressure condition is reached:

If judged as no, then return to step 107 to restart the test;

If the judgment is yes, the automatic control work ends.

The present invention has the following advantages: 1. For the first time, a molding machine that can realize automatic control molding under the condition of thermal-force-magnetic field coupling loading is designed; 2. The control range of heat, force and magnetic field is wide (the maximum magnetic field intensity is greater than 1.5T, the highest The temperature is higher than 250°C, the maximum pressure is greater than 15MPa) and the continuous working time is long (the continuous working time is not less than 0.5H), not only can work continuously under the condition of multi-field coupling, but also can be molded under single field or no field state; 3. The electricity, magnetism and heat of each field do not interfere with each other, which has high reliability and high control precision.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a block diagram of the control box connection relationship of the present invention;

Fig. 3 is a flow chart of the method for controlling compression molding conditions of the present invention.

In the figure 1-upper hydraulic column head, 2-insulation layer, 3-electromagnetic coil, 4-heating and pressure-resistant plate, 5-second temperature sensor, 6-heat-force cooling water jacket layer, 7-frame, 8-bottom Hydraulic column head, 9-pressure sensor, 10-magnetic field sensor, 11-resistance heater array, 12-magnetic field cooling water jacket layer, 13-first temperature sensor.

detailed description

Thermal-force-magnetic multi-field coupling molding machine, including a hydraulic press, the hydraulic press includes a frame 7 and opposite, independently controlled lifting upper hydraulic column head 1 and lower hydraulic column head 8, the hydraulic column head end faces are provided with pressure sensors in turn 9. Thermal-mechanical cooling water jacket layer 6, insulating layer 2, resistance heater array 11, heating and pressure-resistant plate 4; the thermal-mechanical cooling water jacket layer 6 is a water circulation cooling system with a water inlet and a water outlet; The resistance heater array 11 is embedded in the heating pressure-resistant plate 4; the side of the heating pressure-resistant plate 4 is provided with a first temperature sensor 13, and the first temperature sensor 13 is connected with a control box; the hydraulic press, resistance heating The device array 11, the thermal-mechanical cooling water jacket layer 6, and the pressure sensor 9 are connected to the control box; the frame 7 is provided with an electromagnetic coil 3 surrounding the lower hydraulic column head, and the surface of the electromagnetic coil 3 is provided with a second temperature Sensor 5, the electromagnetic coil 3 is wrapped with a magnetic field cooling water jacket layer 12, and the magnetic field cooling water jacket layer 12 is also a water circulation cooling system with a water inlet and a water outlet; the inner surface of the magnetic field cooling water jacket layer 12 1. A magnetic field sensor 10 is arranged between the upper hydraulic column head 1 and the lower hydraulic column head 8; the magnetic field sensor 10, the second temperature sensor 5, the magnetic field cooling water jacket layer 12 and the electromagnetic coil 3 are connected to the control box.

When in use, the control box is used to start and control the work of the thermal-mechanical cooling water jacket layer 6 and the magnetic field cooling water jacket layer 12, and place the magnetic permeable mold on the heating and pressure-resistant flat plate 4 of the lower hydraulic column head 8, and the control box controls the hydraulic press The hydraulic pump controls the lower hydraulic column head 8 and the magnetic conduction mold to descend to the pressing position, and the upper hydraulic column head 1 descends to the heated pressure-resistant plate 4 fixed on the upper hydraulic column head 1 to contact the magnetic conduction mold. The control box controls the electric current of the resistance heater array 11 to control the resistance heater array to heat the pressure-resistant flat plate 4, so as to realize the preheating of the magnetic permeable mold. When the temperature measured by the first temperature sensor 13 reaches the set temperature, the control box controls the resistance heater array 11 to stop heating, the upper hydraulic column head 1 rises, and the lower hydraulic column head 8 lifts the magnetic permeable mold to rise to the initial position. Apply release agent on the surface of the magnetic permeable mold, and then pour the uncured magnetic functional polymer composite material into the groove of the lower plate of the mold. After the material reaches the gel point, close the upper plate of the mold and control it through the control box The lower hydraulic column head 8 is lowered to the pressing position, and the upper hydraulic column head 1 is lowered to the heated pressure-resistant flat plate 4 to be attached to the upper plate of the magnetic permeable mold. The coupled heat, force, magnetic field size and time are set through the control box, and the upper and lower hydraulic column heads exert constant pressure on the upper and lower plates of the magnetic permeable mold by heating the pressure-resistant plate 4 . The resistance heater array 11 applies a constant thermal field to the mold and the magnetic functional polymer composite material by heating the heated pressure-resistant plate 4 and measuring the temperature by the first temperature sensor 13 . Electromagnetic coil 3 generates a magnetic field after being energized. At the same time, when the upper and lower hydraulic column heads and the heated pressure-resistant plate 4 are in the pressing position, they are located in the magnetic field generated by electromagnetic coil 3, which acts as a yoke, which not only strengthens the strength of the magnetic field, but also makes the magnetic field The uniformity has been significantly improved. The second temperature sensor 5 measures the size of the thermal field generated after the electromagnetic coil 3 is energized. When the thermal field generated by the electromagnetic coil 3 exceeds the set temperature, the control box starts the magnetic field cooling water jacket layer 12 to cool the electromagnetic coil 3 . Within the set time range, the thermal-mechanical-magnetic multi-field coupling molding machine realizes the application of constant temperature, constant pressure and constant magnetic field to the magnetic functional polymer composite material. When the set time is reached, the resistance heater array 11 stops heating, the electromagnetic coil 3 stops energizing to generate a magnetic field, the upper and lower hydraulic column heads rise to the initial position respectively, the mold is taken out, the mold is opened, and the pressed magnetic functional polymer composite material is taken out, Completion of the compression molding of magnetic functional polymer composites under thermal-mechanical-magnetic multi-field coupling conditions.

During specific implementation, described control box comprises rectifier power supply 18, programmable controller PLC15, data acquisition card 14, signal generation module 16, D/A module 19 and power amplifier 17; Described programmable controller PLC15 and data acquisition card 14 is connected with the signal generation module 16; The signal generation module 16 is connected with the D/A module 19 and the power amplifier 17; The D/A module 19 is connected with the rectifier power supply 18; The first temperature sensor 13, the second temperature Sensor 5, pressure sensor 9, magnetic field sensor 10 are connected with the data acquisition card 14 of control box; Described resistance heater array 11, electromagnetic coil 3 are connected with the rectifier power supply 18 of control box; Described heat-force cooling water jacket layer 6 , the magnetic field cooling water jacket layer 12 and the hydraulic press are connected with the power amplifier 17 of the control box. The programmable controller PLC15 is responsible for setting the molding conditions, processing, analyzing, judging and issuing control instructions to the data signals. The data acquisition card 14 is responsible for the acquisition of each sensor data. The signal generating module 16 is responsible for converting the control commands issued by the programmable controller PLC15 into driving signals. The D/A module 19 converts the driving signal converted by the signal generating module 16 into an analog signal quantity, so as to control the current, voltage or power output by the rectifier power supply 18 . The power amplifier 17 amplifies the power of the driving signal converted by the signal generating module 16, thereby driving the magnetic field cooling water jacket layer 12, the thermal-mechanical cooling water jacket layer 6 to start work and the hydraulic pump of the hydraulic machine to operate. The rectified power supply 18 provides electrical energy to the electromagnetic coil 3 and the resistance heater array 11 to generate a magnetic field or dissipate heat. The upper hydraulic column head 1 and the lower hydraulic column head 8 are made of DT4 electrical pure iron, and the heating and pressure-resistant plate 4 is made of alloy cast aluminum. The hydraulic column head made of DT4 electrical pure iron has good magnetic permeability, and the heating and pressure-resistant plate made of metal cast aluminum has good thermal conductivity, magnetic conductivity and pressure resistance, which can effectively improve the magnetic field strength and magnetic field of the electric coil of uniformity. A solenoid valve is provided at the water inlet and/or water outlet of the thermal-mechanical cooling water jacket layer 6 and the magnetic field cooling water jacket layer 12, and the solenoid valve is connected to the power amplifier 17 of the control box. The power amplifier 17 of the control box controls the operation of the thermal-mechanical cooling water jacket layer 6 and the magnetic field cooling water jacket layer 12 by controlling the opening and closing of the solenoid valve. The magnetic field cooling water jacket layer 12 is made of austenitic stainless steel. Austenitic stainless steel has good high temperature resistance. The insulating layer 2 is formed by integrating mica pads, barley paper, and bandages soaked in xylene insulating varnish. Mica gasket has good insulation performance, highland barley paper has good insulation performance, flexibility, water resistance, wear resistance, grease resistance, aging resistance, and xylene-impregnated insulating varnish bandage has good insulation performance.

The method for the control box of the thermal-mechanical-magnetic multi-field coupling compression molding machine to control the compression molding conditions includes the following steps:

Step 101: Presetting the compression molding conditions through the programmable controller PLC15, the compression molding conditions include magnetic field strength, thermal field, and loading pressure;

Step 102: the programmable controller PLC15 issues a command to start the magnetic field and the thermal field control, and outputs the driving signal of the magnetic field and the thermal field through the signal generating module 16;

Step 103: D/A module 19 performs digital-to-analog conversion on the driving signal output in step 102, and outputs an analog current or voltage signal;

Step 104: The analog current or voltage signal output by the D/A module 19 controls the rectified power supply 18 to supply power to the electromagnetic coil 3 and the resistance heater array 11, thereby generating a magnetic field and a thermal field;

Step 105: collecting temperature and magnetic field strength data by the data acquisition card 14 through the first temperature sensor 13, the second temperature sensor 5 and the magnetic field sensor 10;

Step 106: The programmable controller PLC15 processes and analyzes the collected data, and compares them with the preset magnetic field strength and temperature conditions:

If it is greater than the preset value, the programmable controller PLC15 generates the driving signal of the magnetic field cooling water jacket layer 12 and/or the thermal-mechanical cooling water jacket layer 6 through the signal generation module 16, and the power amplifier 17 amplifies the driving signal to drive The magnetic field cooling water jacket layer 12 and/or the thermal-mechanical cooling water jacket layer 6 start working, and then return to step 105 to restart the test;

If less than the preset value, then return to step 102 to restart the test;

If it is equal to the preset value, then enter step 107;

Step 107: the programmable controller PLC15 issues a force field control command, and outputs a drive signal of the force field through the signal generating module 16;

Step 108: The force field drive signal output in step 107 is amplified by the power amplifier 17 to drive the hydraulic pump of the hydraulic machine, so that the upper and lower hydraulic column heads are pressed together to generate a constant pressure;

Step 109: the data acquisition card 14 collects pressure data through the pressure sensor 9;

Step 110: The programmable controller PLC15 processes and analyzes the collected pressure data, and judges whether the preset pressure condition is reached:

If judged as no, then return to step 107 to restart the test;

If the judgment is yes, the automatic control work ends.

Claims (3)

1. a kind of Re-power-magnetic multi- scenarios method compression molding forming machine, including hydraulic press, it is characterized by: described hydraulic press includes frame (7) with relative, the upper hydraulic column head (1) of independent control lifting and lower hydraulic pressure stigma (8), described upper hydraulic column head (1) and under Hydraulic pressure stigma (8) end face is sequentially provided with pressure transducer (9), Re-power cooling water jacket layer (6), insulating barrier (2), resistance heater Array (11), the resistance to locating back of heating (4)；Described Re-power cooling water jacket layer (6) is that the water circulation with water inlet and outlet is cold But system；Described resistance heater array (11) is embedded in the resistance to locating back of heating (4)；Described heating resistance to locating back (4) side It is provided with the first temperature sensor (13), described first temperature sensor (13) is connected with control chamber；Described hydraulic press, resistance heating Device array (11), Re-power cooling water jacket layer (6), pressure transducer (9) are connected with control chamber；It is provided around on described frame (7) Solenoid (3) around lower hydraulic pressure stigma, described solenoid (3) surface is provided with second temperature sensor (5), described electricity Magnetic coil (3) is wrapped with magnetic-field cooling water jacket layer (12), and described magnetic-field cooling water jacket layer (12) is also with water inlet and to go out The hydrologic cycle cooling system at the mouth of a river；Described magnetic-field cooling water jacket layer (12) inner surface, upper hydraulic column head (1) and lower hydraulic pressure stigma (8) it is provided with magnetic field sensor (10) between；Described magnetic field sensor (10), second temperature sensor (5), magnetic-field cooling water jacket layer (12) it is connected with control chamber with solenoid (3), described control chamber includes rectifier power source (18), Programmable Logic Controller plc(15), Data collecting card (14), signal generating module (16), d/a module (19) and power amplifier (17)；Described Programmable Logic Controller Plc(15) it is connected with data collecting card (14) and signal generating module (16)；Described signal generating module (16) and d/a module (19) connect with power amplifier (17)；Described d/a module (19) is connected with rectifier power source (18)；Described first temperature sensor (13), second temperature sensor (5), pressure transducer (9), magnetic field sensor (10) and the data collecting card (14) of control chamber connect Connect；Described resistance heater array (11), solenoid (3) are connected with the rectifier power source (18) of control chamber；Described Re-power cooling Water jacket layer (6), magnetic-field cooling water jacket layer (12) and hydraulic press are connected with the power amplifier (17) of control chamber.

2. Re-power according to claim 1-magnetic multi- scenarios method compression molding forming machine, it is characterized by: described upper hydraulic column head (1), lower hydraulic pressure stigma (8) is made up of dt4 electrical pure iron, and the resistance to locating back of described heating (4) is made up of alloy cast aluminium, described magnetic field Cooling water jacket layer (12) is made up of austenite stainless steel metal, and described insulating barrier (2) is mica spacer, Semen avenae nudae paper, leaching dimethylbenzene Insullac binder is integrated and is formed.

3. Re-power according to claim 2-magnetic multi- scenarios method compression molding forming machine, its control chamber controls compression molding condition Method comprise the following steps:

Step 101: by Programmable Logic Controller plc(15) compression molding condition is carried out with presetting, described compression molding condition Including magnetic field intensity, thermal field, on-load pressure size；

Step 102: Programmable Logic Controller plc(15) send startup magnetic field and thermal field control instruction, and pass through signal generating module (16) drive signal of output magnetic field and thermal field；

The drive signal of output in step 102 is carried out digital-to-analogue conversion by step 103:d/a module (19), output analog quantity electric current or Voltage signal；

The analog quantity curtage signal that step 104:d/a module (19) exports controls rectifier power source (18) to solenoid (3) power, thus producing magnetic field and thermal field with resistance heater array (11)；

Step 105: the first temperature sensor (13), second temperature sensor (5) and magnetic field are passed through by data collecting card (14) and passes Sensor (10) collecting temperature and magnetic field strength date；

Step 106: Programmable Logic Controller plc(15) to collection data carry out processing, analyze, and with presetting magnetic field intensity It is compared with temperature conditionss:

If more than presetting value, Programmable Logic Controller plc(15) magnetic-field cooling water is produced by signal generating module (16) Jacket layer (12) and/or Re-power cooling water jacket layer (6) drive signal, power amplifier (17) is amplified rear-guard to drive signal Moving field cooling water jacket layer (12) and/or Re-power cooling layer (6) are started working, and are then back to step 105 and restart to test；

If less than presetting value, return to step 102 restarts to test；

If being equal to presetting value, enter step 107；

Step 107: Programmable Logic Controller plc(15) send field of force control instruction, and pass through signal generating module (16) power output The drive signal of field；

Step 108: in step 107, the field of force drive signal of output amplifies the hydraulic pressure of rear-guard hydrodynamic press through power amplifier (17) Pump, so that the pressing of upper and lower hydraulic pressure stigma, produces constant pressure；

Step 109: data collecting card (14) gathers pressure data by pressure transducer (9)；

Step 110: Programmable Logic Controller plc(15) pressure data of collection is carried out processing, analyzes, and judge whether to reach pre- The pressure condition setting:

If being judged as NO, return to step 107 restarts to test；

If being judged as YES, automatically control end-of-job.