A lifting platform for a 3D printer

Abstract

The utility model is suitable for 3D printer technical field provides a kind of lifting platform for 3D printer, including support seat, four guide rods are equipped on support seat upper surface, each guide rod is slidably fitted with the sliding sleeve, and the same lifting plate is fixedly connected between four sliding sleeves;The same printing platform is equipped on lifting plate through two fixed blocks;The upper end surface of printing platform is equipped with assembly slot, and the detachable printing substrate is embedded in assembly slot;Cooling cavity is set in printing platform;The device safeguards 3D printing operation high efficiency and stable development from multidimension: printing platform detachable embedding design gives consideration to firm and convenient, printing platform realizes smooth and accurate movement by means of, simultaneously, it has real-time all-around position monitoring function to ensure accurate position;Guide rod elastic limit block buffering impact, support seat shock pad absorbs vibration energy, anti-slip silica gel layer prevents displacement, all-around guarantee equipment safe operation, greatly improve 3D printing quality and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printer technology, and in particular relates to a lifting platform for 3D printers. Background Technology

[0002] With the rapid development of 3D printing technology, its application in many fields such as industrial manufacturing, medical care, architecture, and art design is becoming increasingly widespread. The demand for 3D printing in different fields is showing a diversified trend. For example, in industrial manufacturing, there are extremely high requirements for printing accuracy and efficiency, and it is necessary to be able to manufacture complex parts quickly and accurately.

[0003] However, existing 3D printer lifting platforms are gradually revealing many limitations in meeting these diverse needs:

[0004] Traditional 3D printers use a relatively fixed method for mounting the printing substrate, and the replacement process is cumbersome and complicated, requiring a lot of time and effort. This not only reduces printing efficiency, but also makes it easy for the substrate to be mispositioned during frequent replacements, affecting print quality.

[0005] Existing lifting platforms mostly use traditional mechanical bearings and guide rods to achieve lifting movements. This structure generates significant friction during movement, which not only consumes extra energy and leads to energy waste, but also causes wear and tear on components, reducing the lifespan of the equipment. More importantly, the presence of friction makes the lifting movement less smooth, prone to shaking and jamming, making it difficult to ensure the precise positioning of the printing platform during lifting, thus affecting the accuracy and quality of 3D printing and failing to meet the requirements of high-precision printing.

[0006] During the 3D printing process, the printing platform generates a lot of heat due to continuous operation. If heat cannot be dissipated in a timely and effective manner, the temperature of the printing platform will continue to rise, causing uneven heating of the printing material and making it prone to deformation, warping, and other problems, which seriously affect the dimensional accuracy and surface quality of the printed product. Utility Model Content

[0007] This utility model provides a lifting platform for 3D printers, aiming to solve the problems of inconvenient replacement of printing substrates, poor stability, insufficient smoothness and accuracy of lifting movement, and poor heat dissipation in existing 3D printer lifting platforms.

[0008] This utility model is implemented as follows: a lifting platform for a 3D printer includes a support base with a rectangular cross-section and a honeycomb-shaped reinforcing mesh inside.

[0009] The four corners of the upper surface of the support base are fixed with guide rods arranged in the vertical direction by positioning pins. Each guide rod is slidably fitted with a sliding sleeve, and the four sliding sleeves are fixedly connected to the same lifting plate.

[0010] A set of fixing blocks is installed on both sides of the lifting plate using countersunk screws;

[0011] The same printing platform is provided on both fixed blocks;

[0012] The upper surface of the printing platform is provided with an assembly groove with a depth of 20-30mm, and a detachable printing substrate is embedded in the assembly groove.

[0013] A cooling chamber is provided inside the printing platform;

[0014] The cooling chamber is equipped with an S-shaped cooling water channel and a K-type thermocouple;

[0015] The water channel has an inlet and an outlet at each end, which are located on both sides of the printing platform.

[0016] Preferably, drive components are symmetrically distributed on both sides of the upper surface of the support base, and each drive component includes:

[0017] The cylinder of the electric actuator is fixed to the support base by bolts;

[0018] The piston rod end of the electric push rod is connected to a disc spring, and its outer periphery is covered with a viscous damping sleeve.

[0019] A connecting lug is fixedly installed on the disc spring;

[0020] The connecting ear is fixedly connected to the bottom side of the fixing block by a set of high-strength bolts.

[0021] Preferably, the printing platform has multiple heat sinks arranged in parallel on its side, and the connection surface between the heat sinks and the printing platform is provided with a thermally conductive silicone grease layer.

[0022] Preferably, the guide rod has an upper limit block at the top and a lower limit block at the bottom, both of which are made of elastic material.

[0023] Preferably, the printing substrate and the assembly slot are interference-fitted, the surface of the printing substrate is provided with an anti-stick coating, and a pressure sensor is provided at the bottom of the assembly slot.

[0024] Preferably, shock-absorbing pads are provided at the four corners of the bottom of the support base, and the bottom surface of the shock-absorbing pads is provided with an anti-slip silicone layer.

[0025] Preferably, laser displacement sensors are provided at the midpoints of the four sides of the support base.

[0026] Preferably, the sliding sleeve is a magnetically levitated linear bearing.

[0027] Compared with the prior art, the embodiments of this application have the following main advantages:

[0028] Firstly, the printing platform of this device uses an assembly slot to mount a detachable printing substrate, which, with interference fit and anti-stick coating, is both stable and easy to replace, ensuring printing stability and convenience. The lifting plate achieves smooth and precise lifting by means of a magnetic levitation linear bearing sleeve and guide rod sliding fit. The cooling system, position monitoring and limit protection device, as well as shock absorption and anti-slip design, ensure the smooth operation of 3D printing from multiple aspects such as heat dissipation, position control, safety protection, shock absorption and anti-slip, ensuring printing quality and efficiency.

[0029] Secondly, this device can monitor the changes in the position of the printing platform in real time and from all angles to ensure the accuracy of the printing platform position; the upper and lower limit blocks of the guide rod are made of elastic material, which effectively buffers the impact of the lifting plate at the extreme position and avoids damage to the equipment; the shock-absorbing pad at the bottom of the support base absorbs and buffers vibration energy, reducing the risk of damage to precision parts, while the anti-slip silicone layer enhances friction and prevents the printer from sliding and shifting, thus ensuring the safe operation of the equipment and the accuracy and stability of the 3D printing process in all aspects. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 3 This is a top view structural diagram of this utility model;

[0033] Figure 4 This is a front structural diagram of the present invention;

[0034] Figure 5 This is a side view of the structure of this utility model;

[0035] Figure 6 This is a side sectional view of the present invention.

[0036] In the diagram: 1. Support base; 2. Guide rod; 3. Sliding sleeve; 4. Lifting plate; 5. Fixing block; 6. Printing platform; 7. Printing substrate; 8. Cooling chamber; 9. Cooling water channel; 10. K-type thermocouple; 11. Water inlet; 12. Drain outlet; 13. Electric push rod; 14. Disc spring; 15. Connecting ear; 16. Heat sink; 18. Upper limit block; 19. Lower limit block; 20. Shock-absorbing pad; 21. Silicone layer; 22. Laser displacement sensor. Detailed Implementation

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] This utility model embodiment provides a lifting platform for a 3D printer, such as... Figure 1-6 As shown, it includes a support base 1, which has a rectangular cross-section and is equipped with a honeycomb-shaped reinforcing mesh inside;

[0040] The four corners of the upper surface of the support base 1 are fixed with guide rods 2 arranged in the vertical direction by positioning pins. Each guide rod 2 is slidably fitted with a sliding sleeve 3. The four sliding sleeves 3 are fixedly connected to the same lifting plate 4.

[0041] A set of fixing blocks 5 are installed on both sides of the lifting plate 4 using countersunk screws;

[0042] The two fixed blocks 5 are equipped with the same printing platform 6;

[0043] The upper surface of the printing platform 6 is provided with an assembly groove with a depth of 20-30mm, and a detachable printing substrate 7 is embedded in the assembly groove.

[0044] A cooling chamber 8 is provided inside the printing platform 6;

[0045] The cooling chamber 8 is equipped with an S-shaped cooling water channel 9 and a K-type thermocouple 10;

[0046] The water channel is provided with an inlet 11 and an outlet 12 at both ends, and the inlet 11 and outlet 12 are respectively located on both sides of the printing platform 6.

[0047] It should be noted that existing 3D printer lifting platforms suffer from problems such as inconvenient replacement of the printing substrate 7, poor stability, insufficient smoothness and precision of lifting movements, and inadequate heat dissipation. This solution addresses these issues by employing a detachable printing substrate 7 embedded design on the printing platform 6, along with anti-stick properties, and magnetic levitation sliding of the lifting plate 4 to achieve stable printing and convenient operation. Furthermore, cooling, position monitoring, limit protection, and shock absorption / anti-slip designs ensure efficient 3D printing operations from multiple dimensions. On the other hand, real-time, all-around position monitoring ensures precise positioning, elastic limit blocks buffer impacts on the lifting plate 4, shock-absorbing pads 20 dampen vibration energy, and an anti-slip silicone layer 21 prevents displacement. These multiple measures comprehensively guarantee the safe and stable operation of the equipment, providing a robust operating platform for high-quality, precise, and stable 3D printing.

[0048] Specifically, in this embodiment, the solution mainly includes a support base 1. When the 3D printer lifting platform is working, it relies on the support base 1 as a support foundation. Its internal honeycomb reinforcing rib mesh ensures the structural strength and stability. The four corners of the upper surface of the support base 1 are fixed with vertical guide rods 2 by positioning pins. The lifting plate 4 achieves smooth lifting and lowering by means of four sliding sleeves 3 that slide with the guide rods 2. The lifting plate 4 is fixed with countersunk screws on both sides to install fixing blocks 5, thereby supporting the printing platform 6. The mounting groove on the upper end face of the printing platform 6 is used to install a removable printing substrate 7 for replacement as needed. During printing, cooling water enters the S-shaped cooling water channel 9 from the water inlet 11 on one side of the printing platform 6. During the flow, it absorbs the heat generated by the printing platform 6 and then flows out from the drain outlet 12 on the other side to achieve heat dissipation and cooling. At the same time, the K-type thermocouple 10 (WRN-230) monitors the temperature of the printing platform 6 in real time to ensure that the printing platform 6 is always within a suitable working temperature range, ensuring the smooth and stable operation of the 3D printing process.

[0049] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, drive components are symmetrically distributed on both sides of the upper surface of the support base 1, and each drive component includes:

[0050] The cylinder of the electric push rod 13 is fixed to the support base 1 by bolts;

[0051] The piston rod end of the electric push rod 13 is connected to a disc spring 14, which is covered with a viscous damping sleeve on its outer periphery.

[0052] A connecting lug 15 is fixedly connected to the disc spring 14;

[0053] The connecting ear 15 is fixedly connected to the bottom side of the fixing block 5 by a set of high-strength bolts.

[0054] In this embodiment, during the extension and retraction of the electric push rod piston rod, the disc spring 14 plays a buffering and shock-absorbing role, while the viscous damping sleeve further absorbs vibration energy to ensure smooth movement. A connecting lug 15 is fixedly installed on the disc spring 14. When the piston rod of the electric push rod 13 extends and retracts, its power is transmitted to the fixed block 5 through the disc spring 14 and the connecting lug 15, thereby driving the lifting plate 4 to move up and down along the guide rod 2, realizing the lifting and adjustment of the entire printing platform 6.

[0055] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, the printing platform 6 has multiple heat sinks 16 arranged in parallel on its side, and the connection surface between the heat sinks 16 and the printing platform 6 is provided with a thermal grease layer.

[0056] In this embodiment, the thermally conductive silicone grease layer has excellent thermal conductivity, which can quickly conduct the heat generated by the printing platform 6 to the heat sink 16. When the outside air flows, the heat sink 16 is in full contact with the air, and the heat can be quickly dissipated into the surrounding environment, thereby effectively reducing the temperature of the printing platform 6, ensuring that the printing platform 6 works stably within a suitable temperature range, and guaranteeing the quality and efficiency of 3D printing.

[0057] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, the top of the guide rod 2 is provided with an upper limit block 18, and the bottom of the guide rod 2 is provided with a lower limit block 19. Both the upper limit block 18 and the lower limit block 19 are made of elastic material.

[0058] In this embodiment, when the lifting plate 4 moves upward to its limit position under the action of the electric push rod 13 and other driving components, it will touch the upper limit block 18. The upper limit block 18, made of elastic material, can absorb part of the impact energy of the lifting plate 4 through its own deformation, playing a buffering role and preventing the lifting plate 4 from rigidly colliding with the top of the guide rod 2 due to excessive rising, thus avoiding damage to the equipment. Similarly, when the lifting plate 4 moves downward to its limit position, it will contact the lower limit block 19. The elastic lower limit block 19 also uses deformation to buffer the impact force, preventing the lifting plate 4 from violently colliding with the bottom of the guide rod 2. Together, they ensure that the lifting plate 4 can move up and down safely and stably on the guide rod 2, extending the service life of the equipment.

[0059] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, the printing substrate 7 and the assembly groove are interference-fitted, the surface of the printing substrate 7 is provided with an anti-stick coating, and a pressure sensor (CYB-20S) is provided at the bottom of the assembly groove.

[0060] In this embodiment, the interference fit installation ensures that the printing substrate 7 is securely embedded in the assembly slot, reducing displacement caused by vibration or external force during printing and ensuring printing stability. The surface of the printing substrate 7 is coated with an anti-stick coating, preventing printing material from easily adhering to the substrate surface during 3D printing, facilitating the smooth removal of the model after printing and avoiding damage to the model or difficulty in cleaning the substrate due to adhesion. At the same time, the pressure sensor at the bottom of the assembly slot plays a monitoring role. When the printing substrate 7 is correctly installed, a certain pressure is applied to the pressure sensor, which converts the pressure signal into an electrical signal and transmits it to the control system to confirm that the printing substrate 7 is installed correctly. During the printing process, if the printing substrate 7 becomes loose or shifts due to external impact or other factors, causing a change in pressure, the pressure sensor can detect this change in time and feed it back to the control system so that timely measures can be taken to prevent printing failure or equipment damage and ensure the smooth progress of the 3D printing operation.

[0061] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, shock-absorbing pads 20 are provided at the four corners of the bottom of the support base 1, and the bottom surface of the shock-absorbing pads 20 is provided with an anti-slip silicone layer 21.

[0062] In this embodiment, when the printer is in operation, vibrations are inevitable. These vibrations may originate from motor operation, mechanical component movement, etc. The shock-absorbing pad 20 can effectively absorb and buffer these vibration energy with its good elastic deformation characteristics, preventing the vibration from being directly transmitted to the ground or other support structures. This reduces the risk of damage to the printer's internal precision components caused by vibration, ensuring the stable operation of the printer. At the same time, the bottom surface of the shock-absorbing pad 20 is also provided with an anti-slip silicone layer 21, which can significantly enhance the friction between the support base 1 and the placement surface, preventing the printer from sliding or displacing due to external impacts or its own vibration during operation. This ensures that the printer is always in a stable working position, thereby ensuring the accuracy and stability of the 3D printing process and improving print quality.

[0063] In a further preferred embodiment of this utility model, such as Figure 1-2 As shown, laser displacement sensors 22 are installed at the midpoints of the four sides of the support base 1.

[0064] In this embodiment, the laser displacement sensor 22 (STK-LD100) can monitor the position changes of the support base 1 and the lifting platform in space in real time and from all directions. Once the position deviation is detected to exceed the preset range, the sensor will quickly convert this information into an electrical signal and transmit it to the printer's control system to ensure that the printing platform 6 is always in an accurate position, thus ensuring the high precision and high quality of 3D printing.

[0065] In a further preferred embodiment of this utility model, such as Figure 1-2As shown, the sliding sleeve 3 adopts a magnetic levitation linear bearing.

[0066] In this embodiment, the magnetic levitation linear bearing uses magnetic force to create a non-contact levitation state between the sliding sleeve 3 and the guide rod 2, thereby eliminating the energy loss and wear problems caused by friction in traditional mechanical bearings.

[0067] Working principle: The support base 1 serves as the foundation of the entire lifting platform. Its internal structure adopts a honeycomb-shaped reinforcing rib mesh design, which greatly enhances the structural strength and stability, providing a reliable guarantee for the stable operation of subsequent components. The vertical guide rods 2 are precisely fixed at the four corners of the upper surface of the support base 1 by positioning pins, laying the foundation for the smooth lifting of the lifting plate 4.

[0068] The lifting plate 4 has fixing blocks 5 installed on both sides by countersunk screws, which supports the printing platform 6. The upper surface of the printing platform 6 is provided with an assembly groove for embedding a detachable printing substrate 7. This design facilitates flexible replacement of the printing substrate 7 according to different printing needs. The printing substrate 7 is installed with the assembly groove by an interference fit, which ensures that the printing substrate 7 is firmly embedded in the assembly groove, effectively reducing displacement caused by vibration or external force during printing and ensuring printing stability. At the same time, the surface of the printing substrate 7 is provided with an anti-stick coating, so that the printing material does not easily adhere to the substrate surface during 3D printing, which facilitates the smooth removal of the model after printing and avoids damage to the model or difficulty in cleaning the substrate due to adhesion.

[0069] In addition, when the printing substrate 7 is correctly installed, a certain pressure is applied to the pressure sensor. The sensor converts the pressure signal into an electrical signal and transmits it to the control system to confirm that the printing substrate 7 is installed correctly. During the printing process, if the printing substrate 7 becomes loose or shifts due to external force collision or other factors, and the pressure changes, the pressure sensor can detect this change in time and feed it back to the control system so that timely measures can be taken to prevent printing failure or equipment damage and ensure the smooth progress of 3D printing operations.

[0070] In terms of the movement of the lifting plate 4, the lifting plate 4 achieves smooth lifting and lowering by means of four sliding sleeves 3 that slide in cooperation with the guide rod 2; among them, the sliding sleeves 3 adopt magnetic levitation linear bearings, and use magnetic force to form a non-contact levitation state between the sliding sleeves 3 and the guide rod 2, thereby eliminating the energy loss and wear problems caused by friction in traditional mechanical bearings, and greatly improving the stability and accuracy of the movement.

[0071] The lifting power of the lifting plate 4 is provided by drive components such as the electric push rod 13; the cylinder of the electric push rod 13 is fixed to the support base 1 by bolts, and its piston rod is connected to the disc spring 14, the outer periphery of which is covered with a viscous damping sleeve; during the extension and retraction of the piston rod, the disc spring 14 plays a buffering and shock-absorbing role, while the viscous damping sleeve further absorbs vibration energy to ensure smooth movement; a connecting ear 15 is fixedly installed on the disc spring 14, and the connecting ear 15 is tightly fixed to the bottom side of the fixed block 5 by a high-strength bolt group; in this way, when the piston rod of the electric push rod 13 extends and retracts, its power is transmitted to the fixed block 5 through the disc spring 14 and the connecting ear 15, thereby driving the lifting plate 4 to move up and down along the guide rod 2, realizing the lifting and adjustment of the entire printing platform 6;

[0072] In terms of heat dissipation, during printing, cooling water enters the S-shaped cooling water channel 9 from the inlet 11 on one side of the printing platform 6. During its flow, it absorbs the heat generated by the printing platform 6 and then flows out from the drain 12 on the other side, achieving heat dissipation and cooling. Simultaneously, the thermally conductive silicone grease layer has excellent thermal conductivity, rapidly transferring the heat generated by the printing platform 6 to the heat sink 16. Multiple parallel heat sinks 16 increase the heat dissipation area. When the outside air flows, the heat sinks 16 are in full contact with the air, allowing heat to be quickly dissipated into the surrounding environment, effectively reducing the temperature of the printing platform 6 and ensuring stable operation within a suitable temperature range, thus guaranteeing the quality and efficiency of 3D printing. Furthermore, the K-type thermocouple 10 monitors the temperature of the printing platform 6 in real time, ensuring that the printing platform 6 remains within a suitable operating temperature range, guaranteeing a smooth and stable 3D printing process.

[0073] In terms of position monitoring and limit protection, laser displacement sensors 22 are installed at the center of each of the four sides of the support base 1, which can monitor the position changes of the support base 1 and the lifting platform in space in real time and from all directions. Once a position deviation is detected that exceeds the preset range, the sensor will quickly convert this information into an electrical signal and transmit it to the printer's control system for timely adjustment, ensuring that the printing platform 6 is always in an accurate position, thus guaranteeing the high precision and high quality of 3D printing. At the same time, the top of the guide rod 2 is equipped with an upper limit block 18, and the bottom is equipped with a lower limit block 19, both of which are made of elastic material. When the lifting plate 4 moves upward under the action of the electric push rod 13 and other drive components, it will reach the upper limit block 18. At the extreme position, it will touch the upper limit block 18. The elastic upper limit block 18 can absorb part of the impact energy of the lifting plate 4 through its own deformation, playing a buffering role and preventing the lifting plate 4 from rigidly colliding with the top of the guide rod 2 due to excessive rise, thus avoiding damage to the equipment. Similarly, when the lifting plate 4 moves downward to the extreme position, it will contact the lower limit block 19. The elastic lower limit block 19 also uses deformation to buffer the impact force, preventing the lifting plate 4 from violently colliding with the bottom of the guide rod 2. In this way, the upper limit block 18 and the lower limit block 19 together ensure that the lifting plate 4 can move up and down safely and stably on the guide rod 2, extending the service life of the equipment.

[0074] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0075] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0076] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0077] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A lifting platform for a 3D printer, characterized in that, include: The support base has a rectangular cross-section and is equipped with a honeycomb-shaped reinforcing mesh inside. The four corners of the upper surface of the support base are fixed with guide rods arranged in the vertical direction by positioning pins. Each guide rod is slidably fitted with a sliding sleeve, and the four sliding sleeves are fixedly connected to the same lifting plate. A set of fixing blocks is installed on both sides of the lifting plate using countersunk screws; The same printing platform is provided on both fixed blocks; The upper surface of the printing platform is provided with an assembly groove with a depth of 20-30mm, and a detachable printing substrate is embedded in the assembly groove. A cooling chamber is provided inside the printing platform; The cooling chamber is equipped with an S-shaped cooling water channel and a K-type thermocouple; The water channel has an inlet and an outlet at each end, which are located on both sides of the printing platform.

2. A lifting platform for a 3D printer as described in claim 1, characterized in that, The upper surface of the support base has drive components symmetrically distributed on both sides. Each drive component includes: The cylinder of the electric actuator is fixed to the support base by bolts; The piston rod end of the electric push rod is connected to a disc spring, and its outer periphery is covered with a viscous damping sleeve. A connecting lug is fixedly installed on the disc spring; The connecting ear is fixedly connected to the bottom side of the fixing block by a set of high-strength bolts.

3. A lifting platform for a 3D printer as described in claim 1, characterized in that, The printing platform has multiple heat sinks arranged in parallel on its side, and the connection surface between the heat sinks and the printing platform is covered with a layer of thermally conductive silicone grease.

4. A lifting platform for a 3D printer as described in claim 1, characterized in that, The guide rod has an upper limit block at the top and a lower limit block at the bottom, both of which are made of elastic material.

5. A lifting platform for a 3D printer as described in claim 1, characterized in that, The printing substrate and the assembly slot are interference-fitted. The surface of the printing substrate is coated with an anti-stick coating, and a pressure sensor is installed at the bottom of the assembly slot.

6. A lifting platform for a 3D printer as described in claim 2, characterized in that, Shock-absorbing pads are installed at the four corners of the bottom of the support base, and the bottom surface of the shock-absorbing pads is covered with an anti-slip silicone layer.

7. A lifting platform for a 3D printer as described in claim 6, characterized in that, Laser displacement sensors are installed at the midpoints of the four sides of the support base.

8. A lifting platform for a 3D printer as described in claim 1, characterized in that, The sliding sleeve uses a magnetically levitated linear bearing.

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