Modularized reconfigurable and independently-controlled high-temperature chamber 3D printer

Abstract

The invention belongs to the field of 3D printers, and discloses a modularized, reconfigurable and independently-controlled high-temperature chamber 3D printer, a chamber and a 3D printer motion frame are separated and assembled in a building block building mode, and an independent chamber PID control module is matched. A heating pipeline is arranged in the inner wall of the detachable inner container heat preservation wall, the outer wall of the detachable inner container heat preservation wall is a heat insulation layer, and independent temperature collection and power supply power lines are led out of the outer wall of the inner container and are independent and isolated from the frame control part. A lock catch is installed at the bottom of the inner container and installed at the bottom of the printer frame. Modular design is adopted, whether an internal high-temperature cavity is provided or not is judged according to requirements, and effective cost control is achieved; maintenance is convenient, internal and external are mutually independent, and dismounting, replacement or maintenance are convenient; independent chamber temperature PID control is achieved, temperature control is more accurate, temperature rising and cooling are more efficient, and energy is effectively saved by starting according to needs; according to the printing / temperature control physical independent control system, sequential control is changed into parallel control, and temperature control failure interference is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to, but is not limited to, the technical field of 3D printers, and particularly relates to a modular and reconfigurable high-temperature chamber 3D printer with independent control. Background Art

[0002] In traditional high-temperature printers, the temperature control of the high-temperature chamber of the printer is combined with the motion control system, and a set of main control systems (software / hardware) are shared. In the structure of traditional high-temperature printers, the chamber and the motion structure are fixed together as an integrated structure.

[0003] Common closed-loop constant-temperature oven-type 3D printers in the prior art usually place the whole printer in an integral heat-insulating cavity, and maintain the constant temperature in the cavity by means of the cooperation of fan circulation and heating pipelines. For example, in a certain industrial-grade oven-type metal powder bed fusion printer, the whole machine motion components are placed in an integrated steel heat-insulating box, the heating pipes are controlled by the built-in PID temperature control system in the box, and the heat distribution is realized by using the air ducts in the box. This structure is convenient for realizing the centralized management of the temperature in the cavity, but lacks effective isolation for the external motion mechanism and measurement system.

[0004] The above-mentioned integral heat-insulating cavity has the following technical problems: First, since the heating heat must be conducted to the moving parts through the air ducts or steel bodies, the motion guide rails, lead screws and precision measuring elements are exposed to high-temperature environments for a long time, resulting in thermal expansion, lubricant failure and structural deformation, which in turn affect the printing accuracy and reliability; Second, it is not easy to realize the independent control of different zones of the temperature in the whole cavity, and the air duct circulation often causes local overheating or cold spots, making it difficult to meet the precise requirements of different materials or multi-process temperature fields. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the present invention provides a modular and reconfigurable high-temperature chamber 3D printer with independent control.

[0006] The present invention is realized as follows. A high-temperature chamber 3D printer includes:

[0007] An H-shaped gantry structure, which includes an external metering frame and an internal load-bearing frame, and the two are independently arranged;

[0008] A magnetic adsorption printing and electric heating platform, which is movably installed along the internal load-bearing frame;

[0009] A high-temperature chamber, which is arranged inside the H-shaped gantry structure and is connected to the external metering frame through a suspension structure;

[0010] A direct drive XY motion system, a Z-axis screw and a double-guide rail stable structure, which are installed on the internal load-bearing frame and are linked with the magnetic adsorption printing and electric heating platform;

[0011] An infrared or electric heating module is provided on the circumferential wall and bottom of the high-temperature chamber

[0012] A structural isolator is provided between the external metering frame and the internal load-bearing frame;

[0013] A thermal isolation component is provided between the high-temperature chamber and the H-shaped gantry structure.

[0014] Furthermore, the suspension structure includes a flexible suspension member, and the flexible suspension member is a damping metal wire, an elastic pull rod, or a high-temperature insulating fiber belt.

[0015] Furthermore, a mechanical reaction force recovery channel is provided at the bottom of the internal load-bearing frame, and the mechanical reaction force generated by the direct-drive XY motion system is conducted in a closed loop through the channel to the frame base.

[0016] Furthermore, the thermal isolation component includes a thermal insulation gap layer and a multi-layer reflector structure, and the reflector structure is provided between the high-temperature chamber and the external metering frame.

[0017] Furthermore, the high-temperature chamber is a detachable structure, installed in the inner slide rail positioning groove of the internal load-bearing frame, and quick locking components are provided at the four corners of the high-temperature chamber.

[0018] Furthermore, the magnetic adsorption printing and electric heating platform is connected to the internal load-bearing frame through a linear guide rail, and an adjustable pre-tightening member is provided between the linear guide rail and the frame.

[0019] The present invention also provides a temperature closed-loop control system for a high-temperature chamber 3D printer, including:

[0020] A PID controller;

[0021] A distributed temperature acquisition module, which is arranged at multiple positions on the inner wall of the high-temperature chamber and is independently connected to the PID controller;

[0022] A heating power drive module, which is electrically connected to the infrared or electric heating module at the bottom or circumferential wall of the high-temperature chamber respectively;

[0023] The PID controller issues adjustment instructions to each heating power drive module respectively according to the real-time temperature signals of the distributed temperature acquisition module to achieve closed-loop control of the temperature in each area.

[0024] The present invention also provides a modular and reconfigurable high-temperature chamber 3D printer, and the high-temperature chamber module and the 3D printer motion frame module are quickly assembled and disassembled through a standardized mechanical positioning structure and electrical plug-in terminals.

[0025] The present invention also provides a thermal isolation component, including:

[0026] Thermal insulation gap layer;

[0027] A multi-layer reflector structure, which is installed between the outer shell of the high-temperature chamber and the external metering frame, and is used to reflect and block thermal radiation.

[0028] The present invention also provides a mechanical reaction force recovery device, including:

[0029] A recovery groove provided on the frame base;

[0030] A guiding beam correspondingly arranged at the bottom of the internal load-bearing frame corresponding to the recovery groove;

[0031] The guiding beam conducts the mechanical reaction force generated by the direct-drive XY motion system to the recovery groove through the corresponding contact surface in a closed loop, so as to recover the mechanical reaction force to the frame base.

[0032] Combined with the above technical solutions and the solved technical problems, the advantages and positive effects of the technical solution to be protected by the present invention are as follows:

[0033] The present invention adopts a highly modular structural design, and users can flexibly choose whether to configure the internal high-temperature chamber according to the actual application scenario. This design significantly reduces the equipment cost brought by unnecessary functions, realizes differentiated configuration for different customer needs and effective cost control. At the same time, the modular architecture facilitates the serial development of products, improving the versatility and compatibility of the system.

[0034] The internal high-temperature chamber and the external frame structure in the present invention are independent of each other, avoiding the disassembly and assembly problems caused by functional coupling. During maintenance, users do not need to disassemble the equipment as a whole, and only need to replace or maintain the target module, which greatly improves the maintenance efficiency and reduces the after-sales service cost. In addition, this structure also improves the overall reliability and system stability of the equipment.

[0035] The present invention is equipped with an independent chamber temperature control module, and adopts a PID closed-loop regulation strategy to achieve high-precision dynamic regulation of the chamber temperature. The temperature control response speed is fast, and the heating and cooling processes are more efficient and stable, avoiding the energy waste caused by traditional series control. By activating the heating system as needed, the average energy consumption of the whole machine is effectively reduced, taking into account both the operating performance and the energy-saving goal.

[0036] The printing control system and the temperature control system of the present invention adopt an independent design of physical decoupling, and the control strategy is optimized from the traditional sequential control to a parallel control mode. This architecture can realize multi-task parallel processing, improve the overall operation efficiency, and effectively isolate the interference to the printing process caused by temperature control failure, enhancing the robustness and fault tolerance of the equipment operation.

[0037] After the device enables the high-temperature cavity module of the present invention, the preparation time before printing can be shortened by about 90%, and the cooling time after printing is reduced by about 30%, significantly improving the production beat while maintaining the system performance. If the cavity heating is not required in the usage scenario, the system will automatically skip the heating / cooling process, further saving about 60 watts of operating power consumption, truly realizing resource allocation on demand.

[0038] Taking the BlastX series of devices as an application example, in a typical usage scenario, by enabling or disabling the cavity temperature control module, the energy consumption savings of the device during a single-day operation exceed 140 watts. Since the cavity remains at room temperature throughout the printing process, or only the bottom plate maintains a heating state below 50°C, the technical advantages and market value of the present invention in energy efficiency optimization are further strengthened. Brief Description of the Drawings

[0039] Figure 1 It is a structural diagram of a modular, reconfigurable, and independently controlled high-temperature chamber 3D printer provided by an embodiment of the present invention;

[0040] Figure 2 It is a structural diagram of a detachable inner liner provided by an embodiment of the present invention;

[0041] Figure 3 It is an external H-shaped gantry structure diagram of a chamberless printer provided by an embodiment of the present invention;

[0042] Figure 4 It is a schematic diagram of a traditional high-temperature printer provided by an embodiment of the present invention;

[0043] In the figure: 1. H-shaped gantry structure; 2. Direct drive XY motion system; 3. Z-axis screw and double guide rail stable structure; 4. Precision platform; 5. Magnetic adsorption printing and electric heating platform; 6. Infrared or electric heating module. Detailed Embodiments

[0044] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The present invention cleverly solves the technical problem that it is difficult to balance the body stiffness and temperature control accuracy in the traditional high-temperature printing environment by completely separating the high-temperature chamber from the 3D printer motion frame. Adopting a "building block" - type modular assembly idea, the external measurement frame and the internal load-bearing frame are set independently, and the structural isolation member effectively prevents heat from being conducted to the motion mechanism, thereby realizing precise isolation and independent control of different temperature zones while maintaining the overall mechanical performance.

[0046] The external metrology frame is responsible for the motion positioning measurement of the entire body, while the internal load-bearing frame is responsible for load transfer. The two are coupled through the suspension structure, which not only ensures the absolute accuracy of positioning feedback, but also avoids measurement errors caused by thermal expansion. This design not only improves the dynamic response capability of the motion system, but also lays a reliable mechanical foundation for subsequent temperature closed-loop control.

[0047] The magnetic printing platform is movably installed on the internal load-bearing frame, and the magnetic module is used to quickly replace the printing base plate; the electric heating plate is arranged by winding precision resistance wire to achieve high uniformity heating of the base plate surface. The platform and the direct-drive XY motion system work together to ensure that the temperature field and motion trajectory are accurately matched during the printing process through real-time position feedback and resistance temperature detector (RTD) signal closed loop.

[0048] The inner tank adopts a dual structure of inner wall heating module and outer wall insulation layer. Distributed temperature acquisition signal lines are arranged on the inner wall to achieve multi-point real-time monitoring; the outer wall insulation layer is combined with vacuum partition or multi-layer reflective film to effectively suppress heat leakage. The PID controller dynamically adjusts the power output of the infrared or electric heating module according to the multi-channel temperature feedback data, forming a fast response and low overshoot temperature closed-loop control, which significantly improves the temperature uniformity and stability.

[0049] The direct drive motor is directly coupled with the high-rigidity dual-guide rail column, eliminating the intermediate transmission chain, reducing backlash and torsional vibration; the Z-axis screw is equipped with a heat-resistant support frame to achieve high-speed up and down adjustment. During the movement of the system, the torque sensor at the end of the screw and the guide displacement sensor are collaboratively sampled, and the mechanical model is used to compensate for thermal expansion errors online, so that the processing accuracy is maintained at the micron level.

[0050] Users can add or remove high-temperature chamber modules or replace different heating types according to printing process requirements to achieve multi-condition switching from normal temperature to ultra-high temperature (up to 300°C or above); and the overall system is always coordinated by the main control board with motion and temperature control signals to achieve multi-channel parallel closed loops, ultimately achieving the goal of high-precision large-size additive manufacturing in a high-temperature environment.

[0051] like Figure 1 As shown, the embodiment of the present invention provides a modular, reconfigurable and independently controlled high-temperature chamber 3D printer, in which the chamber and the 3D printer motion frame are separated and assembled in a building block manner, and cooperate with an independent chamber PID control module. It includes:

[0052] H-shaped gantry structure 1, the H-shaped gantry structure includes an external measurement frame and an internal load-bearing frame, which are independently arranged;

[0053] A magnetic printing and electric heating platform 5 is movably installed along the internal load-bearing frame;

[0054] A precision platform 4 is arranged inside the H-shaped gantry structure and connected to the external measurement frame through a suspension structure;

[0055] The direct-drive XY motion system 2, the Z-axis screw and the double-guide rail stabilization structure 3 are installed on the internal load-bearing frame and are linked to the magnetic printing and electric heating platform;

[0056] Infrared or electric heating module 6, arranged on the circumferential wall surface of the high-temperature bottom;

[0057] A structural isolation member is provided between the external metering frame and the internal load-bearing frame;

[0058] A thermal isolation component is provided between the high temperature chamber and the H-shaped gantry structure.

[0059] In terms of the overall structure, the external metrology frame and the internal load-bearing frame are in a "nested" relationship, and the two are separated by structural isolation parts. The external metrology frame is responsible for positioning and measurement feedback, and is located at the outermost layer of the structure; the internal load-bearing frame is located inside it, directly bearing the weight of the moving parts and the printing platform. The two are nested in space but not directly thermally coupled, which not only ensures the temperature stability of the measurement system when the high-temperature chamber is heated, but also maintains the overall rigidity and accuracy of the machine body.

[0060] The magnetic printing and electric heating platform is installed on the linear guide rails of the internal load-bearing frame and can slide freely along the X and Y axes. The platform is rigidly connected to the direct-drive XY motion system, the Z-axis screw and the dual-guide rail stability structure through the guide rails. The driving force generated by the motion system directly acts on the platform to achieve high-acceleration, high-responsive positioning and feeding. The electric heating component and the magnetic module are placed under the platform, and the replaceable base plate is quickly adsorbed by magnetic force to complete the efficient heat transfer between the heating and printing base plates.

[0061] The high temperature chamber is connected to the external metering frame by a suspension structure. The four-corner flexible suspension components not only support the position of the chamber, but also absorb the thermal expansion deformation caused by heating. The inner wall of the chamber is equipped with infrared or resistance heating modules, and the outer wall is a multi-layer reflective plate and a thermal insulation gap layer, which constitutes a thermal isolation component and forms a multiple thermal insulation barrier with the external metering frame. This assembly relationship ensures the effective separation of the internal temperature of the chamber from the external moving parts, and the heat mainly circulates in the chamber without diffusing to other parts of the body.

[0062] Functionally, the distributed temperature sensor collects multi-point temperature signals inside the cavity in real time, and sends power commands to each heating unit through an independent PID control module respectively, realizing rapid heating, precise temperature control and uniformity control. At the same time, the direct-drive XY motion system and the Z-axis screw system receive the motion commands from the main control board, and the linkage platform executes the printing path in the high-temperature environment. Through the multi-signal coupling of position feedback and temperature closed-loop, the system can complete large-size additive manufacturing with micron-level accuracy in the high-temperature chamber.

[0063] Such as Figure 2 The inner liner is detachable. A heating module is arranged in the inner wall of the heat-insulating wall of the inner liner, and the outer wall is a heat-insulating layer. Independent and dispersed temperature acquisition signal lines and power lines are led out from the outer wall of the inner liner, which are independent and isolated from the XYZ main control motion system.

[0064] The embodiment of the present invention provides a modular and reconfigurable high-temperature chamber 3D printer, which is integrally constructed by a frame structure. This structure is composed of an external metering frame and an internal load-bearing frame, which are respectively set independently, and the rapid docking and disassembly of the chamber module and the motion platform module are realized through a building-block type splicing and assembly method. This design takes into account both the system rigidity and flexibility, facilitating users to adjust the configuration as needed to adapt to various printing working conditions and environmental requirements.

[0065] The internal XYZ multi-axis motion platform is installed in an independent outer frame, forming a self-contained system. The top bellows plate and the detachable heat-insulating cavity avoid the loss of printing accuracy caused by temperature conduction or vibration transmission. The maintenance and calibration of the motion system are also made more convenient.

[0066] The high-temperature chamber is arranged inside the H-shaped gantry structure and is effectively thermally insulated from the overall frame through a thermal isolation component, minimizing the structural deformation or thermal interference caused by heat leakage. The inside of the chamber adopts a detachable heat-insulating inner liner, and the inner wall of the inner liner is evenly embedded with heating modules, which can achieve a working environment of up to more than 250 °C. The outer wall is coated with a high-efficiency heat-insulating layer, forming a closed thermal circulation space, improving the thermal efficiency and ensuring operation safety.

[0067] To achieve independent and precise control of the cavity temperature, the chamber heating module is equipped with a separate PID temperature control module. This module is physically isolated from the 3D printing main control board, and the electrical signal path is also completely independent. The heating control circuit performs closed-loop regulation according to the preset temperature target and reads the temperature sensing signals arranged at different positions of the inner liner in real time to achieve regional temperature uniformity control and ensure the thermal stability of the printing process.

[0068] The power and data cables required for the heating and temperature sensing units of the chamber are independently led out from the outer wall of the inner tank and exported outside the equipment frame through specific wiring channels, avoiding any electromagnetic or thermal interference with the control lines of the main control motion system. In addition, this wiring structure also facilitates the quick replacement of the cavity module or the maintenance of the electrical unit, further enhancing the modular property and system safety of the equipment.

[0069] During operation, the user selects whether to enable the high-temperature chamber module according to the type of printing material and the complexity of the model. If enabled, the PID control module starts the inner tank heating unit to quickly heat the chamber to the set temperature; during the heating process, the motion system can parallelly complete the preheating and initial positioning of the print head without waiting for the chamber to reach the set temperature before starting the motion, improving the overall operation efficiency. After printing is completed, if the heating chamber is enabled, according to the characteristics of the corresponding printing material, gradient cooling is performed to increase the crystallization rate of the printed part, achieving the goals of increasing strength, releasing stress, and reducing the risk of warping.

[0070] Such as Figure 3 The outer frame of the chamberless printer can be installed at the bottom of the printer frame by installing a latch at the bottom of the inner tank.

[0071] The device adopts an independent chamber temperature PID control, with more accurate temperature control, more efficient temperature rise and fall, and effective energy saving by enabling as needed. The printing / temperature control physical independent control system adopts parallel control, effectively avoiding interference caused by temperature control failure.

[0072] 1. Thermal field control and structural frame response mechanism under high-temperature environment

[0073] Traditional high-temperature 3D printers ( Figure 4 ) adopt a single-layer H-shaped gantry structure, and its thermal field directly acts on the whole machine structure, resulting in a significant cumulative error of frame thermal deformation. While the present invention ( Figure 1 ) adopts a modular separated chamber structure, with the external metal frame undertaking rigid positioning and the internal high-temperature chamber being independently suspended, effectively improving the timing consistency and structural stability of printing accuracy.

[0074] 2. Maintenance optimization of the detachable high-temperature inner tank and multitasking switching ability

[0075] Such as Figure 2 As shown, the printer is internally provided with a detachable high-temperature inner tank structure, which adopts a nested plug-in positioning + quick-release latch mechanism to realize the replacement of printing chambers with different materials or different temperature grades, improving the environmental control flexibility inside the chamber. Through the modular management of the inner tank, rapid reset of the thermal field and pollution prevention and control between printing tasks can be realized, which is especially suitable for the printing requirements of functionally graded materials or composite materials.

[0076] 3. Quick maintenance in chamberless mode and low-temperature printing expansion mode

[0077] Figure 3 The H-type gantry structure in the chamberless mode is shown. This configuration is mainly used for cryogenic printing or component repair and test mode. The external frame has an all-round open structural expansion interface for subsequent embedding of other sensing devices (such as laser scanning and vision calibration systems). In this mode, the inner liner is cancelled and open-platform printing is achieved by relying on external environmental control, which is suitable for material parameter testing and debugging.

[0078] 4. Synergistic optimization mechanism of thermal management and structural coupling design

[0079] The whole machine system sets the inside of the high-temperature chamber as a local thermally enclosed environment, and controls the heat distribution with the assistance of electric heating or radiative heating components; the outer frame maintains room temperature to achieve thermal field isolation. Through the multi-physical field optimization layout of the three-layer coupling of "inner liner - outer shell - frame", the synergistic control of thermal gradient stabilization, structural load balancing and dynamic accuracy optimization is realized to meet the precision requirements of high-performance 3D printing.

[0080] In the present invention, the high-temperature chamber is independently arranged at the central position of the H-type gantry structure, and is kept at a certain gap from the external metal frame by a vertical suspension method, so that it is in the area with the most concentrated heat source without directly contacting the support structure. This spatial position isolation design makes it difficult for the radiative heat and convective heat generated by the high-temperature chamber during operation to conduct to the outer frame, reduces the influence of structural thermal expansion, and effectively suppresses the system deformation amount and precision drift caused by the temperature gradient.

[0081] The inner liner structure is assembled inside the outer frame through positioning pins, chutes and quick locking mechanisms to form a stable thermally enclosed space. It can be disassembled, replaced or upgraded separately, and is suitable for printing materials and processes with different thermal field requirements. The external frame is provided with multi-station interfaces and guiding structures to ensure the attitude maintenance and alignment accuracy of the inner liner during installation, improving the modular maintenance efficiency of the equipment and the reliability of long-term operation.

[0082] The temperature uniformity of the high-temperature environment during the printing process is controlled by the heat source system located in the chamber and the peripheral wall, while the cooling system is arranged in the cavity between the outer frame and the inner liner to form a convective heat insulation buffer zone. Since the motion control system and the measurement system are located in different functional partitions respectively, their functional positions do not interfere with each other. This functional structure separation design enables the thermal control system and the motion system to operate in an independent environment, realizing the dual precision guarantee of temperature control and positioning accuracy during the printing of semi-crystalline high-performance materials.

[0083] Figure 4 For the structure of the traditional high-temperature printer, the chamber and the motion structure are fixed together and are an integral structure.

[0084] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A high temperature chamber 3D printer, characterized in that: include: H-shaped gantry structure, the H-shaped gantry structure includes an external measurement frame and an internal load-bearing frame, which are independently arranged; A magnetic printing and electric heating platform is movably installed along the internal load-bearing frame; A high temperature chamber is disposed inside the H-shaped gantry structure and connected to the external metering frame via a suspension structure; The direct-drive XY motion system, Z-axis screw and dual-guide rail stabilization structure are installed on the internal load-bearing frame and are linked to the magnetic printing and electric heating platform; An infrared or electric heating module is arranged on the top or circumferential wall of the high temperature chamber; A structural isolation member is provided between the external metering frame and the internal load-bearing frame; A thermal isolation component is provided between the high temperature chamber and the H-shaped gantry structure.

2. The high temperature chamber 3D printer according to claim 1, characterized in that: The suspension structure comprises a flexible suspension member, and the flexible suspension member is a damping metal wire or an elastic pull rod or a high-temperature insulating fiber belt.

3. The high temperature chamber 3D printer according to claim 1, characterized in that: A mechanical reaction force recovery channel is provided at the bottom of the internal load-bearing frame, and the mechanical reaction force generated by the direct-drive XY motion system is transmitted to the frame base through the channel closed loop.

4. The high temperature chamber 3D printer according to claim 1, characterized in that: The thermal isolation assembly includes a thermal insulation gap layer and a multi-layer reflector structure, and the reflector structure is arranged between the high temperature chamber and the external metrology frame.

5. The high temperature chamber 3D printer according to claim 1, characterized in that: The high temperature chamber is a detachable structure, which is installed in the slide rail positioning groove inside the internal load-bearing frame, and quick locking components are provided at the four corners of the high temperature chamber.

6. The high temperature chamber 3D printer according to claim 1, characterized in that: The magnetic printing and electric heating platform is connected to the internal load-bearing frame through a linear guide rail, and an adjustable pre-tightening member is arranged between the linear guide rail and the frame.

7. A temperature closed-loop control system for a high-temperature chamber 3D printer, characterized in that: include: PID controller; Distributed temperature acquisition modules are arranged at multiple locations on the inner wall of the high-temperature chamber and are independently connected to the PID controller; A heating power driving module, wherein the heating power driving module is electrically connected to an infrared or electric heating module on the top or circumferential wall of the high temperature chamber; The PID controller sends adjustment instructions to each heating power driving module according to the real-time temperature signal of the distributed temperature acquisition module to achieve closed-loop control of the temperature of each area.

8. A modular reconfigurable high temperature chamber 3D printer, characterized in that: The high temperature chamber module and the 3D printer motion frame module can be quickly assembled and disassembled through standardized mechanical positioning structure and electrical plug-in terminals.

9. A thermal isolation assembly, characterized in that: include: Thermal insulation gap layer; A multi-layer reflective plate structure is installed between the high-temperature chamber shell and the external measurement frame to reflect and isolate heat radiation.

10. A mechanical reaction force recovery device, characterized in that: include: A recovery tank provided on the base of the frame; A guide beam arranged at the bottom of the internal load-bearing frame corresponding to the recovery groove; The guide beam transmits the mechanical reaction force generated by the direct-drive XY motion system to the recovery groove through the corresponding contact surface closed loop, thereby recovering the mechanical reaction force to the frame base.

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