Intelligent numerically controlled pressure system platform and method of use for reciprocating extrusion

Abstract

This invention discloses an intelligent numerically controlled pressure system platform for reciprocating extrusion and a method for using the same. [Solution] The intelligent numerically controlled pressure system platform for reciprocating extrusion includes a mold clamp / temperature control system, a platform precision displacement control system, a base, a PC, and a temperature / displacement monitoring sensing control system. The PC is communicated to the mold clamp / temperature control system, the platform precision displacement control system, the mold control platform, and the temperature / displacement monitoring sensing control system. The mold control platform is provided with an auto-leveling system. The auto-leveling system is communicated to the platform precision displacement control system. According to the present invention, the operation of the pressure system can be precisely controlled, and the operating state and important parameters can be monitored online in real time, making it highly versatile.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent numerical control pressure system platforms, and specifically relates to an intelligent numerical control pressure system platform for reciprocating extrusion and a usage method.

Background Art

[0002] Since biodegradable zinc alloys require certain plastic toughness and mechanical support performance during the application process, it is necessary to enhance the toughness of biodegradable zinc alloys. By combining with severe plastic deformation technology (SPD), SPD can significantly refine crystal grains and reduce the size of the internal structure of the material to the sub-micron level or the nanometer level, thereby improving the strength of the biodegradable zinc alloy and simultaneously improving its toughness. Severe plastic deformation technology mainly includes equal-channel angular pressing, high-pressure torsion, and reciprocating extrusion (or cyclic extrusion compression, CEC), etc. Among them, reciprocating extrusion can achieve an ideal material refinement effect by conveniently adjusting parameters such as the extrusion path, extrusion temperature, and extrusion rate.

[0003] In the methods described in Chinese Patent Application Publication CN110919006A (Controllable Pressure Metal Powder and Other Channel Corner Extrusion Devices and Methods) and Chinese Patent Application Publication CN110125203A (Metal Material Die-Driven Reciprocating Extrusion Device Applicable to a Unidirectional Four-Column Hydraulic Press), although it is described that parameters such as pressure and temperature in the extrusion process can be controlled, there is still a limited die clamping operation space, die clamping and adjustment are difficult, the integration degree of the control system is low, it is difficult to monitor and control the state of the extrusion process in real time, the device structure is complex and the versatility is low, custom equipment is required, and there is a problem that it is difficult to achieve industrialization. The prior art cannot realize the coordinated matching and visualization monitoring of multi-physical parameters such as pressure, temperature, speed, and displacement, thereby making it difficult to scientifically grasp the state of the bioabsorbable zinc alloy in the extrusion process and perform precise forming control. [Overview of the Initiative]

[0004] To overcome the problems present in the prior art, the object of the present invention is to provide an intelligent numerically controlled pressure system platform and method of use for reciprocating extrusion. By providing a platform precision displacement control system, an auto-leveling system, and a temperature / displacement monitoring sensing control system, the operation of the pressure system can be accurately and precisely controlled, and the operating state and important parameters can be monitored online in real time. The present invention provides an intelligent numerically controlled pressure system that is highly versatile, easy to install in existing commercial equipment on the market, and thereby enables industrialization.

[0005] To achieve the above objectives, the present invention employs the following technical means. In a first aspect, the present invention provides an intelligent numerically controlled pressure system platform for reciprocating extrusion. It includes a mold clamp and temperature control system, a platform precision displacement control system, a base, a PC, and a temperature and displacement monitoring sensing control system, wherein the platform precision displacement control system includes a slide rod, the base is provided with a slide groove, the slide rod is mounted in the slide groove, the slide rod has an electric lifting device, the mold control platform is fixed to the electric lifting device, the mold clamp and temperature control system includes two opposing moving rods, the moving rod has an electric horizontal moving device, and the mold control platform has mounting grooves. The movable rod is provided in the mounting groove, the movable rod is provided with a chuck for fixing the mold, the chuck is provided with a temperature control device and a pressure sensor, the temperature and displacement monitoring sensing control system faces the mold (7), the PC is communicated to the mold clamp and temperature control system, the platform precision displacement control system, the mold control platform and the temperature and displacement monitoring sensing control system respectively, an auto-leveling system is provided within the mold control platform, and the auto-leveling system is communicated to the platform precision displacement control system.

[0006] A pressure monitoring system is selectively provided on the base. The pressure monitoring system is electrically connected to a pressure sensor in the chuck.

[0007] Selectively, the auto-leveling system is a gyroscope leveling system.

[0008] Selectively, the PC is equipped with a radio frequency transceiver.

[0009] Selectively, the number of slide grooves in the base and the number of slide rods in the platform precision displacement control system are both two.

[0010] Selectively, the temperature and displacement monitoring sensing control system includes an infrared distance sensor, to which a thermocouple is connected.

[0011] Selectively, the electric lifting device of the platform precision displacement control system includes a ring material fitted onto the mold control platform, the ring material having rollers and a motor drive device.

[0012] Selectively, the electric lifting device of the platform precision displacement control system includes an electric lifting rod provided on the slide rod.

[0013] In a second aspect, the present invention provides a method for using the intelligent numerically controlled pressure system platform for reciprocating extrusion. The method includes the following steps: S1: The PC sets the displacement parameters of the mold control platform, and the platform precision displacement control system raises or lowers the mold control platform to a predetermined height based on the set parameters, and then moves it forward, thereby extending the mold control platform from the base to a predetermined position. S2: The mold is placed on the top surface of the mold control platform, the mold clamp parameters are set on the PC, and the mold clamping and temperature control system (1) raises and lowers the chuck to a predetermined position and applies force to perform clamping based on the set mold clamping position and clamping force. S3: The PC sets the displacement parameters of the mold control platform, and the platform precision displacement control system adjusts the mold control platform to a predetermined position so that the indenter is directly facing the mold based on the set parameters, and the auto-leveling system levels the mold control platform. S4: The temperature and displacement monitoring sensing control system measures the extrusion reduction amount and feeds it back to the PC, which sets the reduction amount based on the feedback parameters. S5: The PC sets the extrusion speed, extrusion temperature, and extrusion pressure. The temperature control device of the chuck in the mold clamp / temperature control system heats the mold based on the set parameters, maintains the temperature at a constant power after heating to the predetermined temperature, adjusts the pressure during the extrusion process based on the set parameters, and then starts the extrusion.

[0014] Selectively, the leveling parameters of the auto-leveling system are such that the leveling time is less than 180 s, the leveling accuracy is less than 2', the stable state holding time is 24 h, the measurement accuracy of the temperature and displacement monitoring sensing control system is 0.1 mm, the heating temperature range of the mold clamp and temperature control system is 50°C-500°C, and the extrusion rate range is 0.001 mm / s-100 mm / s.

[0015] Compared to the prior art, the present invention has the following beneficial effects. The platform precision displacement control system of the present invention can accurately control the position of the mold control platform, adjust the platform height according to different usage conditions, has a wide range of applicable mold sizes, can extend the press machine by moving it horizontally, increases the operating space for mold clamping, and reduces the difficulty of mold clamping and adjustment. The auto-leveling system built into the mold control platform of the present invention ensures that the upper surface of the mold control platform is kept horizontal and can eliminate the adverse effects of non-axial pressure. The temperature and displacement monitoring sensing control system of the present invention can accurately measure the relative position of each part of the mold and automatically calculate the reduction amount, thereby simplifying the extrusion process, reducing errors due to manual measurement, and measuring the reduction speed based on the relative change in the position of each part of the mold during the extrusion process, feeding it back to a PC to monitor and control the extrusion process in real time.

[0016] Furthermore, the present invention is highly versatile, compatible with commercial equipment, applicable to commercially available single-cylinder press machines, and advantageous for the industrialization of reciprocating pressing of biodegradable zinc alloys.

[0017] Furthermore, the present invention enables smarter and more convenient human-computer interaction and cooperative matching deformation warning monitoring. By inputting predetermined parameters such as pressing speed, pressing amount, pressure, and holding time, it performs the appropriate operation and provides feedback to the user on displacement, real-time speed, and real-time pressure, enabling them to understand the pressing state.

[0018] Furthermore, the device of the present invention can achieve online monitoring and control via a PC machine, allowing terminal equipment to monitor each parameter of the intelligent pressure system online and adjust the set parameters to achieve remote monitoring and control of the intelligent pressure system. [Brief explanation of the drawing]

[0019] Furthermore, the drawings described herein do not limit the scope of the invention in any way. In addition, the shapes, proportions, and dimensions of the components shown in the drawings are schematic and are intended to aid in understanding the present invention, and do not specifically limit the shapes, proportions, and dimensions of the components of the present invention.

[0020] [Figure 1] This is a perspective view of the intelligent numerically controlled pressure system platform for reciprocating extrusion according to the present invention. [Figure 2] This is a cross-sectional view of the intelligent numerically controlled pressure system platform for reciprocating extrusion according to the present invention. Explanation of symbols: 1. Mold clamp and temperature control system; 2. Platform precision displacement control system; 3. Mold control platform; 4. Base; 5. PC; 6. Pressure monitoring system; 7. Mold; 8. Temperature and displacement monitoring sensing control system; 9. Indenter; 10. Auto-leveling system; 11. Radio frequency transceiver. [Modes for carrying out the invention]

[0021] In order for those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is clear that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor should fall within the protection scope of the present invention.

[0022] In addition, when an element is "provided on" another element, it may be directly provided on the other element or an intermediate element may be interposed. When one element is "connected to" another element, it may be directly connected to the other element or an intermediate element may exist simultaneously. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for the purpose of illustration and do not represent the only embodiment.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the art belonging to the technical field of the present invention. The terms used in this specification are for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0024] The present invention will be described in detail below with reference to the drawings.

[0025] As shown in FIGS. 1 and 2, the intelligent numerical control type pressure system platform for reciprocating extrusion of the present invention includes a mold clamping and temperature control system 1, a platform precision displacement control system 2, a pedestal 4, a PC 5, and a temperature and displacement monitoring sensing control system 8. The platform precision displacement control system 2 includes a slide rod. The pedestal 4 is provided with a slide groove, and the slide rod is provided in the slide groove. The slide rod has an electric lifting device, and a mold control platform 3 is fixed to the electric lifting device. The mold clamping and temperature control system 1 includes two moving rods provided opposite to each other. The moving rod has an electric horizontal moving device. An attachment groove is formed in the mold control platform 3, and the moving rod is provided in the attachment groove. A chuck for fixing a mold 7 is provided on the moving rod, and a temperature control device and a pressure sensor are provided on the chuck. The temperature and displacement monitoring sensing control system 8 faces the mold 7, and the PC 5 is communicatively connected to the mold clamping and temperature control system 1, the platform precision displacement control system 2, the mold control platform 3, and the temperature and displacement monitoring sensing control system 8 respectively. An auto leveling system 10 is provided in the mold control platform 3, and the auto leveling system 10 is communicatively connected to the platform precision displacement control system 2.

[0026] The usage method of the intelligent numerical control type pressure system platform for reciprocating extrusion includes the following steps. S1: Set the displacement parameters of the mold control platform 3 in the PC 5. The platform precision displacement control system 2 raises or lowers the mold control platform 3 to a predetermined height based on the set parameters, and then moves forward to extend the mold control platform 3 from the pedestal 4 to a predetermined position. S2: The mold 7 is placed on the upper surface of the mold control platform 3, the clamp parameters for the mold 7 are set in PC5, and the mold clamping and temperature control system 1 raises and lowers the chuck to a predetermined position and applies force to perform clamping based on the set clamping position and clamping force of the mold 7. S3: The displacement parameters of the mold control platform 3 are set in PC5, and the platform precision displacement control system 2 adjusts the mold control platform 3 to a predetermined position so that the indenter 9 faces the mold 7 based on the set parameters, and the auto-leveling system 10 levels the mold control platform 3. S4: The temperature and displacement monitoring sensing control system 8 measures the extrusion reduction amount and feeds it back to PC5, which sets the reduction amount based on the feedback parameters. S5: The extrusion speed, extrusion temperature, and extrusion pressure are set in PC5. The heating device of the chuck of the mold clamp / temperature control system 1 heats the mold 7 based on the set parameters, maintains the temperature at a constant power after heating to a predetermined temperature, adjusts the pressure during the extrusion process based on the set parameters, and then starts the extrusion.

[0027] Example 1 Specific embodiments of the present invention will be further described below with reference to Figures 1 and 2.

[0028] The intelligent numerically controlled pressure system platform for reciprocating extrusion according to the present invention includes a base 4, a mold control platform 3, and a PC 5.

[0029] The mold control platform 3 includes a mold clamping and temperature control system 1, a platform precision displacement control system 2, an auto-leveling system 10, and a temperature and displacement monitoring sensing control system 8.

[0030] The mold clamping and temperature control system 1 incorporates a pressure sensor, and its chuck moves vertically and horizontally, allowing it to clamp the mold 7 at a predetermined position with a predetermined force based on the set clamping parameters.

[0031] The mold clamping and temperature control system 1 incorporates a pressure sensor, and its chuck moves vertically and horizontally, allowing it to clamp the mold 7 at a predetermined position with a predetermined force based on the set clamping parameters.

[0032] The mold clamping and temperature control system 1 is mounted on the mold control platform 3 and is used for clamping and heating the mold 7.

[0033] Specifically, the mold control platform 3 is made of plate material. Two mounting grooves are formed in the mold control platform 3. The mold clamp and temperature control system 1 includes two moving rods. The two moving rods are each provided in the two mounting grooves of the mold control platform 3. Both of the mounting grooves are elongated and can accommodate the movement of the moving rods in their longitudinal direction and vertical movement. The moving rods include an electric horizontal movement device. Specifically, the electric horizontal movement device is a roller driven by a motor.

[0034] Each moving rod is equipped with a chuck. Specifically, the two moving rods are mounted on the same axis and face each other. The chucks are attached to the opposing surfaces of the two moving rods. The chucks are selectively removable and replaceable.

[0035] The base 4 is connected to the mold control platform 3 by the platform precision displacement control system 2. A pressure monitoring system 6 and a PC 5 are provided at the upper end of the base 4. A radio frequency transceiver 11 is built into the PC 5.

[0036] Specifically, the PC5 is a Smart Touch PC5.

[0037] The pressure monitoring system 6 is electrically connected to the mold clamp and temperature control system 1 and is used to monitor the pressure of the mold 7. Specifically, the mold clamp and temperature control system 1 has a built-in pressure sensor, which allows the chuck to clamp the mold 7 at a predetermined position with a predetermined force based on set clamping parameters. The pressure monitoring system 6 is a pressure display device electrically connected to the pressure sensor.

[0038] The platform precision displacement control system 2 is fixedly mounted on both sides of the mold control platform 3 and is used for moving and positioning the mold control platform 3.

[0039] Specifically, the base 4 is provided with two sliding grooves, and the sliding grooves are elongated in shape.

[0040] Specifically, the platform precision displacement control system 2 includes two slide rods. The two slide rods are each provided in two slide grooves of the base 4 and are capable of sliding along the slide grooves. Specifically, the bottom of each slide rod has a roller and a motor drive device.

[0041] Selectively, ring members are fixed to both sides of the mold control platform 3. The ring members are fitted onto the slide rod and have rollers and a motor drive device, and are capable of moving up and down along the slide rod.

[0042] Selectively, the slide rod of the platform precision displacement control system 2 is an electrically operated lifting rod.

[0043] The auto-leveling system 10 is located within the mold control platform 3 and is used to adjust and maintain the horizontality of the mold control platform 3. The auto-leveling system 10 is communicated with the platform precision displacement control system 2. Specifically, the auto-leveling system 10 is a gyroscope leveling system.

[0044] The temperature and displacement monitoring sensing control system 8 is fixed to the mold control platform 3 and faces the mold 7. Specifically, the temperature and displacement monitoring sensing control system 8 is fixed to the rear side of the mold control platform 3 and is used to determine the temperature and relative position of each part of the mold 7.

[0045] Specifically, the temperature and displacement monitoring sensing control system 8 includes an infrared distance sensor, enabling real-time monitoring of the temperature of each part of the mold 7. The infrared distance sensor is connected to a thermocouple, allowing it to monitor the internal temperature of the mold 7. The temperature and displacement monitoring sensing control system 8 can be raised and lowered. The amount of reduction is determined by monitoring the relative position of each part of the mold 7 based on the numerical changes of the infrared distance sensor during the raising and lowering process.

[0046] The mold clamping and temperature control system 1, pressure monitoring system 6, auto-leveling system 10, and temperature and displacement monitoring sensing control system 8 monitor the temperature, extrusion speed, and extrusion pressure of the mold 7 in real time during the extrusion process and provide feedback to the PC 5. The PC 5 compares the current parameters with the set parameters and performs corrections in real time.

[0047] Example 2 When using the intelligent numerically controlled pressure system platform for reciprocating extrusion according to the present invention, First, the PC5 is configured to set the displacement parameters of the mold control platform 3. Based on the set parameters, the platform precision displacement control system 2 raises or lowers the mold control platform 3 to a predetermined height, and then moves it forward to extend the mold control platform 3 from the base to a predetermined position. The displacement accuracy is set to 0.1 mm.

[0048] Subsequently, the mold 7 is placed on the top surface of the mold control platform 3, the mold clamp parameters are set on the PC 5, and the mold clamp and temperature control system 1 raises and lowers the chuck to a predetermined position and clamps it based on the set mold clamp position and clamp force.

[0049] The mold control platform 3 displacement parameters are set in PC5, and the platform precision displacement control system 2 adjusts the mold control platform 3 to a predetermined position based on the set parameters, thereby aligning the indenter 9 with the mold. Subsequently, the auto-leveling system 10 built into the mold control platform 3 levels the mold control platform 3 based on the horizontality of its surface. The leveling parameters are a leveling time of less than 180s, a leveling accuracy of less than 2', and maintaining a stable state for 24 hours.

[0050] The temperature and displacement monitoring sensing control system 8 measures the extrusion reduction amount. The measurement accuracy is 0.1 mm. This information is fed back to the PC5. The PC5 automatically sets the reduction amount based on the fed-back parameters. The extrusion speed, extrusion temperature, and extrusion pressure are set in the PC5. The mold clamp and temperature control system 1 heats the mold based on the set parameters. The heating temperature is adjusted within 50°C-500°C. After heating to the predetermined temperature, the mold is kept warm with constant power.

[0051] The pressure monitoring system 6 adjusts the pressure during the extrusion process based on the set parameters. The pressure is adjustable within the range of 0T-150T. The extrusion rate is adjustable within the range of 0.001mm / s-100mm / s. Then, extrusion is started.

[0052] Furthermore, the present invention allows for real-time monitoring and recording of extrusion pressure, extrusion reduction amount, extrusion speed, and extrusion temperature. The temperature and displacement monitoring sensing control system 8 monitors the temperature and relative position of each part of the mold in real time, returns the data to the PC 5, which automatically calculates the extrusion reduction amount and controls the mold clamp and temperature control system 1 to heat the mold 7.

[0053] During compression, the displacement monitoring sensing control system 8 measures the reduction amount in real time and outputs the reduction speed to the PC5. In this process, the PC5 compares the collected data with the set value and performs difference compensation. The PC5 integrates the collected data to draw pressure-displacement, temperature-time, and pressure-speed curves, and feeds them back in real time to the touchscreen display interface and user terminals on the local area network via the radio frequency transceiver 11. At the same time, it receives setting value correction information from the user terminals on the local area network and transmits it to the PC5, realizing online monitoring and control of the intelligent numerically controlled pressure system platform for reciprocating extrusion.

[0054] Unless otherwise specified, the equipment elements in the above embodiments are all general equipment elements, and unless otherwise specified, the structural installation methods, operating methods, or control methods are all common installation methods, operating methods, or control methods in the art.

[0055] The above embodiments are merely for illustrative purposes, and any other modifications or equivalent substitutions made by those skilled in the art to the proposed technical concept of the present invention are included within the scope of the claims of the present invention, provided they do not depart from the spirit and scope of the proposed technical concept.

Claims

1. An intelligent numerically controlled pressure system platform for reciprocating extrusion, The system includes a mold clamp and temperature control system (1), a platform precision displacement control system (2), a base (4), a PC (5), and a temperature and displacement monitoring sensing control system (8). The platform precision displacement control system (2) includes a slide rod, the base (4) is provided with a slide groove, the slide rod is mounted in the slide groove, the slide rod has an electric lifting device, the mold control platform (3) is fixed to the electric lifting device, the mold clamp and temperature control system (1) includes two opposing moving rods, the moving rods have an electric horizontal moving device, and the mold control platform (3) has mounting grooves formed in front The moving rod is provided in the mounting groove, and the moving rod is provided with a chuck for fixing the mold (7), and the chuck is provided with a temperature control device and a pressure sensor, and the temperature / displacement monitoring sensing control system (8) faces the mold (7), and the PC (5) is communicated to the mold clamp / temperature control system (1), the platform precision displacement control system (2), the mold control platform (3), and the temperature / displacement monitoring sensing control system (8), respectively, and an auto-leveling system (10) is provided within the mold control platform (3), and the auto-leveling system (10) is communicated to the platform precision displacement control system (2), The method of using the intelligent numerically controlled pressure system platform for reciprocating extrusion includes the following steps S1 to S5: S1: The PC (5) sets the displacement parameters of the mold control platform (3), and the platform precision displacement control system (2) raises or lowers the mold control platform (3) to a predetermined height based on the set parameters, and then moves it forward, thereby extending the mold control platform (3) from the base (4) to a predetermined position. S2: The mold (7) is placed on the upper surface of the mold control platform (3), the clamp parameters of the mold (7) are set in the PC (5), and the mold clamping and temperature control system (1) raises and lowers the chuck to a predetermined position and applies force to perform clamping based on the set clamping position and clamping force of the mold (7). S3: The PC (5) sets the displacement parameters of the mold control platform (3), and the platform precision displacement control system (2) adjusts the mold control platform (3) to a predetermined position based on the set parameters so that the indenter (9) faces the mold (7), and the auto-leveling system (10) levels the mold control platform (3). S4: The temperature and displacement monitoring sensing control system (8) measures the extrusion reduction amount and feeds it back to the PC (5). The PC (5) sets the reduction amount based on the feedback parameters. S5: An intelligent numerically controlled pressure system platform for reciprocating extrusion, characterized in that the extrusion speed, extrusion temperature, and extrusion pressure are set in the PC (5), the temperature control device of the chuck of the mold clamp / temperature control system (1) heats the mold (7) based on the set parameters, maintains the temperature at a constant power after heating to a predetermined temperature, adjusts the pressure during the extrusion process based on the set parameters, and then starts the extrusion.

2. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that a pressure monitoring system (6) is provided on the base (4), and the pressure monitoring system (6) is electrically connected to the pressure sensor of the chuck.

3. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the auto-leveling system (10) is a gyroscope leveling system.

4. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the PC (5) is provided with a radio frequency transceiver (11).

5. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the number of slide grooves in the base (4) and the number of slide rods in the platform precision displacement control system (2) are both two.

6. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the temperature and displacement monitoring sensing control system (8) includes an infrared distance sensor, and a thermocouple is connected to the infrared distance sensor.

7. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the electric lifting device of the platform precision displacement control system (2) includes a ring material fitted onto the mold control platform (3), and the ring material includes a roller and a motor drive device.

8. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the electric lifting device of the platform precision displacement control system (2) includes an electric lifting rod provided on the slide rod.

9. The intelligent numerically controlled pressure system platform for reciprocating extrusion according to claim 1, characterized in that the leveling parameters of the auto-leveling system (10) are: leveling time is less than 180 s, leveling accuracy is less than 2', stable state holding time is 24 h, the heating temperature range of the mold clamp / temperature control system (1) is 50°C to 500°C, and the extrusion rate range is 0.001 mm / s to 100 mm / s.

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