Instant heating device, piston-type feeding mechanism and 3D printer

Abstract

The present application discloses an instant heating device, a piston-type feeding mechanism and a 3D printer. The instant heating device includes: a liquefier and a temperature controller. The liquefier is provided with a heating bladder for quickly heating the material passing through the liquefaction device to melt. The temperature controller is configured to control the heating temperature of the heating device in real time. The piston-type feeding mechanism includes: a driving mechanism, a barrel, a piston, a nozzle and the above-mentioned instant heating device. The 3D printer includes a frame, a printing platform, driving mechanisms on the X, Y, and Z axes and the above-mentioned piston-type feeding mechanism. The instant heating device disclosed in the present application has a fast heating speed, can automatically control the temperature according to pre-setting, and is easy to install. The piston-type feeding mechanism is convenient to disassemble and assemble, has a simple structure, stable working performance, and smooth material transportation. The 3D printer has a simple structure and is easy for personnel to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly to an instant heating device, a piston-type feeding mechanism and a 3D printer. Background Art

[0002] External application films are skin care products commonly used by people in modern life for skin beauty and care. Common external application films include facial masks for facial care, wrinkle films for improving and eliminating stretch marks and neck wrinkles, and care films for other parts of the body. Among them, facial masks are an important category of beauty skin care products, used to make up for the still insufficient facial cleansing work after makeup removal and facial cleansing, and based on this, cooperate with other functional ingredients to achieve other care functions, such as moisturizing, whitening, acne removal, freckle removal, anti-wrinkle, dark circle removal, etc. The shapes of facial masks are mostly designed according to the general laws of people's facial features, but the facial features of each user are different, and the sizes, shapes and relative positions of the main facial organs vary from person to person, resulting in problems such as inconsistent mask sizes, inability to closely fit the facial skin, and incorrect positions of reserved holes corresponding to organs when users use facial masks, greatly reducing the use experience and effects. There is a lack of external application films such as facial masks that can meet personalized needs in the market, and there is also a lack of methods for manufacturing external application films that can meet personalized needs.

[0003] Due to its advantages such as personalization and precision, 3D printing technology is particularly suitable for external application films, and can achieve customized external application films according to the contour features, skin types and specific needs of different areas of consumers' skin, thereby improving the care effect of external application films. However, 3D printing of external application films has different characteristics from other 3D printing. Generally, 3D printing mostly uses one of technologies such as fused deposition, selective laser sintering, and stereolithography as the forming basis, and the printing materials required in the printing process are relatively single, mostly thermoplastic polymer materials, metal powders, ceramic powders, photocurable resins, etc., and the supply of printing materials is simple. 3D printing of external application films is a multi-step and multi-material composite printing, and the materials used include prepared polymer materials and different care ingredients. These materials have completely different properties, and the material supply is relatively complex. There is still a lack of external application film 3D printing devices specifically designed for 3D printing of external application films in the prior art.

[0004] In addition, current 3D printing devices are generally set up for industrial production, mostly with large volumes, not suitable for beauty salons or home use, and many of them require heating the raw materials to melt. For traditional 3D printers using fluid materials as raw materials, their heating devices need to be preheated to a certain temperature in advance, then the fluid raw materials are transported to the heating device for heating, and then extruded through the nozzle. The 3D printing process itself is quite time-consuming, and if the heating device is preheated again, a large amount of time will be wasted. Moreover, the feeding mechanism and nozzle of existing 3D printers are fixed to the printer and cannot be disassembled. During the use of the printer, after each printing, there will inevitably be residual materials in the feeding mechanism and nozzle. Over time, it is easy to cause blockage of the feeding mechanism and nozzle, which is not conducive to the long-term use of the printer. Summary of the Invention

[0005] A brief overview of the present invention is given below to facilitate understanding of the intention of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention and is not intended to limit the scope of use of the present invention. Its purpose is only to briefly overview the present invention in a simplified form.

[0006] Another aspect of this embodiment provides an instant heating device, including a liquefier and a temperature controller. The liquefier is used to quickly heat the materials passing through the liquefier to melt, and a heating capsule is arranged inside the liquefier; the temperature controller is used to control the heating temperature of the heating device in real time, including an external temperature sensor and a control switch; the temperature sensor is installed on the liquefier, and the control switch is electrically connected to the liquefier and the temperature sensor respectively.

[0007] Another aspect of this embodiment provides a piston-type feeding mechanism, which includes the above-mentioned instant heating device, and also includes a cartridge seat, a cartridge, a driving mechanism, a piston and a nozzle; the cartridge is detachably fixed on the cartridge seat, the piston is placed inside the cartridge, and the driving mechanism is connected to the piston; the driving mechanism drives the piston to move inside the cartridge to extrude the materials inside the cartridge.

[0008] Another aspect of this embodiment provides a 3D printer, which includes the above-mentioned instant heating device and piston-type feeding mechanism, and also includes a frame, a driving mechanism on the X-axis, a driving mechanism on the Y-axis, a printing platform and a driving mechanism on the Z-axis; the piston-type feeding mechanism is connected to the Z-axis driving mechanism, the printing platform is connected to the Y-axis driving mechanism, and the Z-axis driving mechanism is connected to the X-axis driving mechanism.

[0009] The advantages of the present invention are as follows: 1) Printing operations can be carried out without preheating the heating device; 2) The print head, heating device, and piston-type cartridge can all be conveniently disassembled for cleaning. Description of the Drawings

[0010] Figure 1 It is a cross-sectional view of an instant heating device provided by an embodiment of the present invention;

[0011] Figure 2 It is a schematic structural diagram of an instant heating device provided by an embodiment of the present invention;

[0012] Figure 3 It is a schematic structural diagram of a piston-type feeding mechanism provided by another embodiment of the present invention;

[0013] Figure 4 It is a schematic structural diagram of a 3D printer provided by yet another embodiment of the present invention.

[0014] In the figure: 10 - liquefier, 101 - heating bladder, 102 - heat conductor, 103 - first through hole, 104 - second through hole, 105 - third through hole, 20 - piston-type feeding mechanism, 201 - cartridge seat, 202 - cartridge, 2021 - discharge port, 203 - drive mechanism, 2031 - through screw stepper motor, 204 - piston, 205 - print head, 206 - first counterbore, 30 - 3D printer, 301 - frame, 302 - X-axis drive mechanism, 303 - Y-axis drive mechanism, 304 - printing platform, 305 - Z-axis drive mechanism. Detailed Embodiments

[0015] The present invention will be described in detail below with reference to the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be clear that the specific structural and functional details described below are merely representative and are only for the convenience of those skilled in the art to understand certain aspects of the present invention, and are not an exhaustive list of the exemplary embodiments of the present invention. The following embodiments are implemented on the premise of the technical solution of the present invention, including further embodiments and operation procedures, but the protection scope of the present invention is not limited thereto. It should be understood that all equivalent embodiments to the embodiments of the present invention should be considered to fall within the protection scope of the present invention.

[0016] An instant heating device provided according to one aspect of the present invention, referring to Figure 1, including a liquefier 10 and a temperature controller (not shown in the figure). The liquefier 10 is used to quickly heat the material passing through the liquefier 10 to melt. A heating bladder 101 is provided inside the liquefier 10. The temperature controller is used to control the heating temperature of the heating device in real time, and it includes a temperature sensor (not shown in the figure) and a control switch (not shown in the figure). The temperature sensor is installed on the liquefier 10, and the control switch is electrically connected to the liquefier 10 and the temperature sensor respectively.

[0017] In this embodiment, as Figure 1 shown, the liquefier 10 is used to heat and melt the material transported to the liquefier 10. A heating bladder 101 is provided inside the liquefier 10. When a printing operation is required, the feeding mechanism transports the material required for printing to the liquefier 10. The heating bladder 101 inside the liquefier 10 will temporarily store a small amount of material and quickly heat the small amount of material stored in the heating bladder 101 to melt. It should be understood that since the capacity of the heating bladder 101 is small, the material inside the heating bladder 101 can be quickly heated to melt when heating the liquefier 10. The feeding of the material to the heating bladder 101 inside the liquefier 10 and the heating of the liquefier 10 can be carried out simultaneously, so that the effect of instant printing can be achieved. At the user perception level, there is no heating waiting process.

[0018] In this embodiment, the temperature controller includes a temperature sensor (not shown in the figure) and a control switch (not shown in the figure). The temperature sensor is installed on the liquefier 10. When the liquefier 10 heats the material placed inside during a printing operation, the temperature sensor monitors the temperature of the material inside the liquefier 10 in real time and transmits the monitored temperature data to the control switch in real time. The control switch controls the heating temperature according to the real-time temperature data. The control switch is electrically connected to the liquefier 10 and the temperature sensor respectively, and controls the power on or off of the liquefier 10 according to the temperature monitored by the temperature sensor in real time to ensure that when the material is heated to a molten state, the temperature is controlled within a suitable range. In this embodiment, the temperature controller used is a temperature controller of the SWE-TB02B series. Specifically, the SWE-TB02B-B8D-155 temperature controller is used in this embodiment. In this embodiment, the temperature sensor used is a PT100 type temperature sensor, but the temperature controller and the temperature sensor are not limited to this. Other temperature controllers that can control the temperature within the temperature range suitable for heating and melting the material in this embodiment and temperature sensors that can monitor the temperature within the preset temperature range in this embodiment can be used as the temperature controller and temperature sensor of the embodiment of the present application.

[0019] In an embodiment of this embodiment, referring to Figure 1, the capacity of the heating capsule 101 can be set to 1-2 ml; in addition, the heating capsule 101 is arranged inside the liquefier 10, and the heating capsule 101 can be integrally cast with the liquefier 10. When the material is transported to the heating capsule 101, the liquefier 10 will quickly rise to the required heating temperature, quickly heat the material in the heating capsule 101 to melt and output it through the printing nozzle. Since the capacity of the heating capsule 101 is small, the time required to raise the temperature to a state where the material in the heating capsule 101 is in a molten state is very short and can be ignored. Heating the material and transporting the material by the heating capsule 101 arranged inside the liquefier 10 are carried out simultaneously. Therefore, a large amount of preheating time is saved, the printing working hours are reduced, and a technical effect of instant printing can be created at the user's perception level.

[0020] In an embodiment of this embodiment, refer to Figure 2 , the liquefier 10 includes: a heating body (not shown in the figure), which is used to provide a heat source for the heating device; and a heat conductor (102), which is used to conduct the heat provided by the heating body; the temperature sensor can also be used to monitor the heating temperature of the heating body in real time; the control switch can also be used to control the on-off of the heating body according to the temperature monitored by the temperature sensor in real time.

[0021] In this embodiment, when the heating body is powered on, the heating body can quickly rise to the required printing temperature, and transfer the heat to the heating capsule 101 through the heat conductor to heat the material in the heating capsule 101. It can be understood that both the heating body and the heat conductor 102 have high thermal conductivity and can transfer heat well, so that the heat can be quickly transferred to the heating capsule 101 for printing operations.

[0022] In this embodiment, while the heating body and the heat conductor 102 are heating and transferring heat, the temperature sensor arranged on the liquefier 10 will monitor the temperature of the liquefier 10 in real time, and transmit the real-time monitored temperature to the control switch. The control switch controls the heating body according to the preset maximum temperature. When the temperature exceeds the preset temperature, the control switch will automatically cut off the power to stop the heating body from heating; at the same time, the temperature sensor will still monitor the temperature of the heating capsule 101 in the liquefier 10 in real time and transmit the monitored temperature to the control switch in real time. When it is monitored that the temperature drops to the preset minimum temperature, the control switch will make the heating body continue to be powered on and continue to heat. In this continuous control mode, the material can be heated well, and the material can be continuously and stably input and output.

[0023] In an embodiment of this embodiment, refer to Figure 1, a first through hole 103 is formed in the heat conductor, and the heating bladder 101 is disposed inside the first through hole 103. In this embodiment, a first through hole 103 penetrating the heat conductor 102 is formed in the heat conductor 102, and the heating bladder 101 is disposed in the middle part of the first through hole 103 of the heat conductor 102. The inner diameter of the heating bladder 101 is slightly larger than the inner diameter of the first through hole 103, so as to provide a slight time buffer when the material enters the heating bladder, which just corresponds to the time required for the heating bladder to rise to the printing temperature. After the material is transmitted to the heating bladder 101 through the upper part of the first through hole 103 for heating, it is output from the lower part; in an embodiment of this embodiment, the upper and lower aperture sizes of the first through hole 103 are the same.

[0024] In an embodiment of this embodiment, with reference to Figure 2 , the temperature sensor is installed on the heat conductor 102, and the control switch is electrically connected to the heating element.

[0025] In this embodiment, the temperature sensor is installed on the heat conductor 102 in a built-in manner, and the temperature sensor is located close to the heating bladder 101. During the heat transfer process of the heat conductor 102, the temperature sensor monitors the temperature change of heating the heating bladder 101 in real time. While the temperature sensor is monitoring in real time, it also transmits the monitored temperature data to the control switch in real time. The control switch is also electrically connected to the heating element to control the heating element to heat or not to heat. In this way, the heating temperature is controlled to keep the material just in a molten state, ensuring the smooth progress of the printing process.

[0026] In an embodiment of this embodiment, the heating element includes a heating rod (not shown in the figure) or a heating wire (not shown in the figure). For example, the heating rod can be an electric heating element made of a high-temperature heating body. Specifically, it can be a silicon molybdenum rod, a silicon carbide rod or a lanthanum chromate electric heating element.

[0027] In this embodiment, when the heating element is a heating rod, the heating rod is built into the heat conductor 102 or inserted into the heat conductor 102. During operation, the heating rod transfers its own heat to the heat conductor 102, and then transfers it to the heating bladder 101 through the heat conductor 102 to heat the material. It should be understood that the part of the heating rod inserted into the heat conductor should be close to the heating bladder 101 to facilitate the rapid transfer of heat to the heating bladder 101 for heating the material; when the heating element is a heating wire, the heating wire is built into the heat conductor 102 close to the heating bladder 101. When heating the material, the temperature rises more rapidly, which is more conducive to the printing work.

[0028] In this embodiment, the heating wire is wound around the heating capsule 101. During operation, the material is heated more thoroughly, and the melting speed and state of the material are relatively more complete, which is more conducive to the printing work. More specifically, the heating wire can be wound around the periphery of the heating capsule 101 in an integrally processed manner.

[0029] In an embodiment of this embodiment, referring to Figure 2 , a second through hole 104 for installing the heating rod is further formed on the heat conductor 102. The second through hole 104 is close to the heating capsule 101 and is used for inserting the heating rod into the second through hole 104. During the printing work, the material can be heated more conveniently. After the printing work is completed, the heating rod is powered off and removed, so that the heating rod and the heat conductor 102 can be cooled more quickly.

[0030] In an embodiment of this embodiment, referring to Figure 2 , a third through hole 105 for installing the temperature sensor is further formed on the heat conductor. The third through hole 105 is arranged on the heat conductor 102 at a position close to the heating capsule 101 and far from the second through hole 104. During installation, the temperature sensor is inserted into the third through hole 105, and the temperature of the material in the heating capsule 101 can be monitored during the printing work. After the printing work is completed, the temperature sensor can be removed from the heat conductor 102. It can be understood that since the heating capsule 101 is arranged inside the heat conductor 102, when the inside of the heating capsule 101 needs to be cleaned after each work is completed, the temperature sensor can be removed to facilitate the cleaning of the inside of the heating capsule 101.

[0031] In an embodiment of this embodiment, the control switch (not shown in the figure) is configured to control the power on and off of the heating element (not shown in the figure) based on a certain threshold. For example, during the printing work, the temperature upper limit and the temperature lower limit can be preset for the control switch. When the control switch receives the temperature data transmitted by the temperature sensor and reaches the preset temperature upper limit, the control switch controls the power supply to the heating element to be cut off. When the control switch receives the temperature data transmitted by the temperature sensor and drops to the preset temperature lower limit, the control switch controls the heating to continue to be powered on, so as to ensure that the heating temperature of the heating element always remains within a certain temperature range, and the material reaches the best melting state required for printing.

[0032] In the above embodiment, an optional range of the threshold is 120°C - 150°C. Within this temperature range, the material can reach an excellent melting state required for printing. During printing, when the temperature reaches 150°C, the control switch controls the heating element to be in a power-off state. When the temperature gradually drops to 120°C, the control switch controls the heating element to switch back to the power-on state and continue to heat the material in the heating bladder 101. In this control method, not only can the melting of the material be maintained in an excellent state, but also the waste of electric energy resources can be reduced while achieving the heating purpose.

[0033] In an embodiment of this implementation manner, the heat conductor 102 can be copper or aluminum or their alloy with high thermal conductivity. In this embodiment, both copper and aluminum can achieve good heat conduction performance at a temperature of 120°C - 150°C, and the heat transfer speed is relatively fast. As the heat conductor 102, it has excellent effects, and both copper and aluminum are relatively easy to process and form, making them very suitable for use as the heat conductor 102 in printing operations.

[0034] In an embodiment of this implementation manner, the heat conductor 102 is silicon carbide ceramic or alumina ceramic. In this embodiment, silicon carbide ceramic or alumina ceramic is also a material with excellent thermal conductivity and is very suitable for use as a heat conductor for heating. The time consumed in its heat transfer process is also relatively short, and using it as a heat conductor can well improve the heating speed of the material.

[0035] In an embodiment of this implementation manner, a heat insulation pad (not shown in the figure) is further provided on the heat conductor 102. In this embodiment, the heat insulation pad wraps around the periphery of the heat conductor 102. When it is necessary to clean the inside of the heating bladder 101 and the temperature of the heat conductor 102 cannot be cooled in a short time, it is convenient for those skilled in the art to disassemble the heat conductor 102. It should be understood that in this embodiment, the heat insulation pad can also be fixedly provided on at least one side of the heat conductor to facilitate the operation of the heat conductor 102 by those skilled in the art during heating. In this embodiment, the heat insulation pad is a polytetrafluoroethylene heat insulation pad. It should be understood that the heat insulation pad described in this embodiment can also be a heat insulation pad made of other heat-resistant materials.

[0036] According to another aspect of the present invention, a piston-type feeding mechanism 20 is provided. Refer to Figure 3, including the instant heating device 10 described in the above embodiments, and the corresponding technical features will not be elaborated one by one; the piston-type feeding mechanism further includes a barrel seat 201, a barrel 202, a driving mechanism 203, a piston 204, and a nozzle 205. The barrel 202 is detachably fixed on the barrel seat 201. The piston 204 is placed inside the barrel 202, and the lower end of the driving mechanism 203 is connected to the piston 204; the driving mechanism 203 drives the piston 204 to move inside the barrel 202 to extrude the material inside the barrel 202.

[0037] In this embodiment, the driving mechanism 203 drives the piston 204 to move. The piston 204 closely adheres to the inner wall of the barrel 202 and moves along the axial direction of the barrel 202 to push and extrude the material inside the barrel 202 and convey the material to the nozzle 205.

[0038] In an embodiment of this implementation manner, the nozzle 205 is connected to the lower part of the first through hole 103 of the heat conducting body 102. In this embodiment, the nozzle 205 is provided with an external thread, and the lower part of the first through hole of the heat conducting body 102 is provided with an internal thread. The nozzle 205 is threadedly connected to the first through hole 103 so that the nozzle 205 can be effectively fixed on the heat conducting body 102. During the printing operation, it is ensured that the material will not leak and can be stably output from the nozzle 205. It should be understood that the connection manner between the nozzle 205 and the lower part of the first through hole 103 includes but is not limited to threaded connection, and it can also be connected in an embedded or rotary snap connection manner.

[0039] In an embodiment of this implementation manner, as Figure 3 shown, the upper part of the heat conducting body 102 is connected to the barrel 202. In this embodiment, the upper part of the heat conducting body 102 is connected to the discharge port 2021 of the barrel 202. During operation, the piston 204 driven by the driving mechanism 203 conveys the material inside the barrel 202 to the heating capsule 101 inside the heat conducting body 102 for heating and outputs it from the nozzle 205.

[0040] In an embodiment of this implementation manner, as Figure 3 shown, the heat conducting body 102 further includes a first counterbore 206, and the first counterbore 206 is concentrically arranged with the first through hole 103. In this embodiment, the first counterbore 206 is arranged at the upper part of the heat conducting body 102 and is concentric with the first through hole 103. During operation, the outer edge of the discharge port 2021 of the barrel 202 is in sealing contact with the first counterbore 206, and the upper part of the first through hole 103 is in contact with the inner edge of the barrel 202 to ensure that the material will not leak from the edge of the discharge port 2021 during the material conveying process.

[0041] In an embodiment of the present embodiment, the discharge port 2021 of the barrel 202 is inserted into the first counterbore 206. In this embodiment, when printing work is carried out, the discharge port 2021 is stably fixed inside the first counterbore 206, increasing the stability of the barrel 202.

[0042] In an embodiment of the present embodiment, as Figure 3 shown, the inner diameter of the discharge port 2021 of the barrel 202 is the same as the inner diameter of the first through hole 103, and the outer diameter of the discharge port 2021 is the same as the inner diameter of the first counterbore 206. When working, when the discharge port 2021 is inserted into the first counterbore 206, the outer edge of the discharge port 2021 is in sealing contact with the inner edge of the first counterbore 206, and the inner edge of the discharge port 2021 is in sealing contact with the first through hole 103, which can not only effectively fix the barrel 202, but also ensure the stable and continuous conveying of materials.

[0043] In an embodiment of the present embodiment, as Figure 3 shown, the driving mechanism 203 includes a through screw stepper motor 2031. Specifically, the through screw stepper motor 2031 includes a 28mm linear stepper motor and a screw rod that makes a reciprocating motion driven by the stepper motor. The piston 204 is connected to one end of the screw rod via a rubber plug fixing head (not shown in the figure) so that the screw rod drives the piston 204 to move; however, the specific implementation manner of the driving mechanism 203 is not limited to this, and any other driving mechanism that can achieve the purpose of the piston type feeding mechanism can be used as the driving mechanism of the present embodiment, such as a driving mechanism composed of a ball screw pair driven by a servo motor.

[0044] A 3D printer provided according to an aspect of the present invention, referring to Figure 4 , includes the above-mentioned piston type feeding mechanism 20, and corresponding technical features will not be elaborated. The 3D printer further includes a frame 301, a driving mechanism 302 for the X-axis, a driving mechanism 303 for the Y-axis, a printing platform 304, and a driving mechanism 305 for the Z-axis; the piston type feeding mechanism 20 is connected to the Z-axis driving mechanism 305, the printing platform 304 is connected to the Y-axis driving mechanism 303, and the Z-axis driving mechanism 305 is connected to the X-axis driving mechanism 302. The Z-axis driving mechanism 305 is connected to the piston type feeding mechanism 20 to ensure the reciprocating motion of the piston type feeding mechanism 20 on the Z-axis. The Z-axis driving mechanism 305 is also connected to the X-axis driving mechanism 302 to ensure the reciprocating motion of the piston type feeding mechanism 20 on the X-axis. The printing platform is fixed on the Y-axis driving mechanism 303 and makes a reciprocating motion along the Y-axis. Each mechanism and component cooperate to carry out printing work.

[0045] The instant heating device, piston-type feeding mechanism and 3D printer provided by the present invention have simple structures, are convenient to install, can be easily removed for cleaning or replacement, and can achieve excellent printing effects during operation.

[0046] The above embodiments are preferred embodiments of the present invention. However, the embodiments of the present invention are not limited to the content included in the above embodiments. Any changes, modifications, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacements and should be included within the protection scope of the present invention.

[0047] Based on the above description, it can be seen that the present application discloses the following technical solutions:

[0048] 1. An instant heating device for a 3D printer, comprising a liquefier (10) and a temperature controller. The liquefier is used to quickly heat the material passing through the liquefier (10) to a molten state, and a heating capsule (101) is arranged inside the liquefier (10);

[0049] The temperature controller is used to control the heating temperature of the heating device in real time, and includes an external temperature sensor and a control switch;

[0050] The temperature sensor is installed on the liquefier (10), and the control switch is electrically connected to the liquefier (10) and the temperature sensor respectively.

[0051] 2. The heating device according to technical solution 1, wherein the capacity of the heating capsule (101) is 1-2 ml.

[0052] 3. The heating device according to technical solution 1 or 2, wherein,

[0053] The liquefier (10) includes: a heating body for providing a heat source to the heating device; a heat conductor (102) for conducting the heat provided by the heating body;

[0054] The temperature sensor is used to monitor the heating temperature of the heating device in real time, and the control switch is used to control the on-off of the heating body according to the temperature monitored by the temperature sensor in real time.

[0055] 4. The heating device according to any one of technical solutions 1-3, wherein a first through hole (103) is formed on the heat conductor (102), and the heating capsule (101) is arranged inside the first through hole (103).

[0056] 5. The heating device according to any one of technical solutions 1-4, wherein the temperature sensor is installed on the heat conductor (102), and the control switch is electrically connected to the heating body.

[0057] 6. The heating device according to any one of Technical Solutions 1-5, wherein the heating element comprises a heating rod or a heating wire.

[0058] 7. The heating device according to any one of Technical Solutions 1-6, wherein the heating wire is wound around the periphery of the heating capsule (101) in an integrally processed manner.

[0059] 8. The heating device according to any one of Technical Solutions 1-7, wherein a second through hole (104) for installing the heating rod is further formed in the heat conducting body (102).

[0060] 9. The heating device according to any one of Technical Solutions 1-8, wherein a third through hole (105) for installing the temperature sensor is further formed in the heat conducting body (102).

[0061] 10. The heating device according to any one of Technical Solutions 1-9, wherein the temperature control switch is configured to turn the heating element on and off based on a certain threshold value.

[0062] 11. The heating device according to any one of Technical Solutions 1-10, wherein the threshold value is 120°C - 150°C.

[0063] 12. The heating device according to any one of Technical Solutions 1-11, wherein the heat conducting body (102) is copper or aluminum with high heat conductivity.

[0064] 13. The heating device according to any one of Technical Solutions 1-12, wherein the heat conducting body (102) is silicon carbide ceramic or alumina ceramic.

[0065] 14. The heating device according to any one of Technical Solutions 1-13, wherein a heat insulation pad is further provided on the heat conducting body (102).

[0066] 15. A piston type feeding mechanism, comprising the heating device according to any one of Technical Solutions 1-14, wherein the piston type feeding mechanism (20) further comprises a barrel seat (201), a barrel (202), a driving mechanism (203), a piston (204) and a nozzle (205); the barrel (202) is detachably fixed on the barrel seat (201), the piston (204) is placed in the barrel (202), and the lower end of the driving mechanism (203) is connected to the piston (204); the driving mechanism (203) drives the piston to move in the barrel (202) to extrude the material in the barrel (202).

[0067] 16. The piston type feeding mechanism according to Technical Solution 15, wherein the nozzle (205) is connected to the lower part of the first through hole (103) of the heat conducting body (102).

[0068] 17. The piston-type feeding mechanism according to technical solution 15 or 16, wherein the upper part of the heat conductor (102) is connected to the barrel (202).

[0069] 18. The piston-type feeding mechanism according to any one of technical solutions 15-17, wherein the heat conductor (102) further includes a first counterbore (206), and the first counterbore (206) is concentric with the first through hole (103).

[0070] 19. The piston-type feeding mechanism according to any one of technical solutions 15-18, wherein the discharge port (2021) of the barrel (202) is inserted into the first counterbore (206).

[0071] 20. The piston-type feeding mechanism according to any one of technical solutions 15-19, wherein the inner diameter of the discharge port (2021) of the barrel (202) is the same as the inner diameter of the first through hole (103), and the outer diameter of the discharge port (2021) is the same as the inner diameter of the first counterbore (206).

[0072] 21. The piston-type feeding mechanism according to any one of technical solutions 15-20, wherein the driving mechanism (203) includes a through screw stepper motor (2031).

[0073] 22. A 3D printer, comprising the piston-type feeding mechanism (20) according to any one of technical solutions 15-21, characterized in that it further includes a frame (301), a driving mechanism (302) for the X-axis, a driving mechanism (303) for the Y-axis, a printing platform (304) and a driving mechanism (305) for the Z-axis; the piston-type feeding mechanism (20) is connected to the Z-axis driving mechanism (305), the printing platform (304) is connected to the Y-axis driving mechanism (303), and the Z-axis driving mechanism (305) is connected to the X-axis driving mechanism (302).

Claims

1. An instant heating device, characterized in that, It includes a liquefier (10) and a temperature controller. The liquefier (10) is used to quickly heat the material passing through the liquefier (10) to melt. Inside the liquefier (10), there is a heating capsule (101) with a capacity of 1 - 2 ml. The temperature controller is used to control the heating temperature of the heating device in real time and includes an external temperature sensor and a control switch. The temperature sensor is installed on the liquefier (10), and the control switch is electrically connected to the liquefier (10) and the temperature sensor respectively. The liquefier (10) includes: a heating body for providing heat source to the heating device; a heat conductor (102) for conducting the heat provided by the heating body. A first through hole (103) is formed on the heat conductor (102), and the heating capsule (101) is arranged inside the first through hole (103). The inner diameter of the heating capsule (101) is larger than the inner diameter of the first through hole (103).

2. The heating device according to claim 1, wherein, The temperature sensor is used to monitor the heating temperature of the heating device in real time. The control switch is used to control the power on and off of the heating body according to the temperature monitored by the temperature sensor in real time.

3. The heating device according to claim 1, wherein, The temperature sensor is installed on the heat conductor (102), and the control switch is electrically connected to the heating body.

4. The heating device according to claim 3, wherein, The heating body includes a heating rod or a heating wire.

5. The heating device according to claim 4, characterized in that, The heating wire is wound around the periphery of the heating capsule in an integrally processed manner.

6. The heating device according to claim 4, characterized in that, A second through hole (104) for installing the heating rod is also formed on the heat conductor (102).

7. The heating device according to any one of claims 3-6, characterized in that, A third through hole (105) for installing the temperature sensor is also formed on the heat conductor (102).

8. The heating device according to claim 7, wherein The control switch is configured to turn the heating body on and off based on a certain threshold.

9. The heating device according to claim 8, wherein, The threshold is 120°C - 150°C.

10. The heating device according to claim 9, wherein, The heat conductor (102) is copper or aluminum with high thermal conductivity.

11. The heating device according to claim 9, wherein, The heat conductor (102) is silicon carbide ceramic or alumina ceramic.

12. The heating device according to claim 11, wherein, An insulating pad is also provided on the heat conductor (102).

13. A piston-type feeding mechanism, characterized in that, It includes the heating device according to any one of claims 1 - 12. The piston - type feeding mechanism (20) further includes a barrel seat (201), a barrel (202), a driving mechanism (203), a piston (204) and a nozzle (205). The barrel (202) is detachably fixed on the barrel seat (201). The piston (204) is placed inside the barrel (202), and the driving mechanism (203) is connected to the piston (204). The driving mechanism (203) drives the piston to move inside the barrel (202) to extrude the material inside the barrel (202). The piston (204) closely adheres to the inner wall of the barrel (202) and moves along the axis direction of the barrel (202). The heat conductor (102) further includes a first counterbore (206) disposed at the upper part of the heat conductor (102), and the first counterbore (206) is concentric with the first through hole (103); during operation, the outer edge of the discharge port (2021) of the barrel (202) is in sealed contact with the first counterbore (206), and the upper part of the first through hole (103) is in contact with the inner edge of the barrel (202).

14. The piston-type feeding mechanism according to claim 13, characterized in that, The nozzle (205) is connected to the lower part of the first through hole (103) of the heat conductor (102).

15. The piston-type feeding mechanism according to claim 13, characterized in that, The discharge port (2021) of the barrel (202) is inserted into the first counterbore (206).

16. The piston-type feeding mechanism according to claim 15, wherein, The inner diameter of the discharge port (2021) of the barrel (202) is the same as the inner diameter of the first through hole (103), and the outer diameter of the discharge port (2021) is the same as the inner diameter of the first counterbore (206).

17. The piston-type feeding mechanism according to claim 16, wherein, The driving mechanism (203) includes a through screw stepper motor (2031).

18. An external application film 3D printer, characterized in that, Comprising the piston-type feeding mechanism (20) according to any one of claims 13-17, further comprising a frame (301), a driving mechanism (302) for the X-axis, a driving mechanism (303) for the Y-axis, a printing platform (304) and a driving mechanism (305) for the Z-axis; The piston-type feeding mechanism (20) is connected to the Z-axis driving mechanism (305), the printing platform (304) is connected to the Y-axis driving mechanism (303), and the Z-axis driving mechanism (305) is connected to the X-axis driving mechanism (302).

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