CN210139620U - Printer for 3D printing - Google Patents

Abstract

The utility model discloses a printer for 3D prints, include XYZ three-axis platform (21), print shower nozzle (22), shaping case (23) and tray (24), XYZ three-axis platform (21) install in shaping case (23), print shower nozzle (22) through shower nozzle bracing piece (25) install in on XYZ three-axis platform (21), tray (24) through tray bracing piece (26) install in on XYZ three-axis platform (21), XYZ three-axis platform (21) drive print shower nozzle (22) with tray (24) motion. The utility model provides a printer is through the accurate motion that has realized the three direction of XYZ, and XYZ three-axis platform control is printed the shower nozzle accurate removal and is sprayed under controlgear's control, has improved the quality of 3D product.

Description

Printer for 3D printing

Technical Field

The utility model relates to a printer especially relates to a printer for 3D prints.

Background

The 3D printing technology is present in the mid-90 s of the 20 th century and is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination. The printing machine is basically the same as the common printing working principle, the printing machine is filled with liquid or powder and other printing materials, the printing materials are overlapped layer by layer under the control of a computer after being connected with the computer, and finally, a blueprint on the computer is changed into a real object.

The principle of the 3D printing technology is basically the same as the working principle of a common printer, only the printing materials are different, the printing materials of the common printer are ink and paper, the 3D printer is internally provided with different printing materials such as metal, ceramic, plastic, sand and the like, the printing materials are actual raw materials, after the printer is connected with a computer, the printing materials can be overlapped layer by layer through the control of the computer, and finally, a blueprint on the computer is changed into an actual object. The 3D printing process comprises three steps of three-dimensional design, slicing processing and printing completion, and is mainly applied to naval vessels, aerospace technology, medical fields and the like.

The printer is as one of 3D printing process important links, and the printing effect of printer is about the fashioned good of 3D product, so to be used for 3D printing in-process printer research to have important meaning.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a printer that is used for 3D to print that precision was printed.

For realizing the utility model discloses a purpose, the printer that provides here includes XYZ three-axis platform, prints shower nozzle, shaping case and tray, and XYZ three-axis platform installs in the shaping incasement, prints the shower nozzle and passes through the shower nozzle bracing piece and install on XYZ three-axis platform, and the tray passes through the tray bracing piece and installs on XYZ three-axis platform, and XYZ three-axis platform drives and prints shower nozzle and tray motion.

The utility model provides a printer is through the accurate motion that has realized the three direction of XYZ, and XYZ three-axis platform control is printed the shower nozzle accurate removal and is sprayed under controlgear's control, has improved the quality of 3D product.

Drawings

Fig. 1 is a schematic structural diagram of a printer provided by the present invention;

fig. 2 is a schematic structural diagram of an XYZ three-axis platform provided by the present invention;

fig. 3 is a schematic structural diagram of a Z-direction movement mechanism provided by the present invention;

fig. 4 is a schematic structural diagram of the X-direction movement mechanism provided by the present invention;

fig. 5 is a schematic structural view of the Y-direction operating mechanism provided by the present invention;

fig. 6 is one of schematic structural diagrams of the printing nozzle provided by the present invention;

fig. 7 is a second schematic structural view of the print head according to the present invention;

fig. 8 is one of schematic structural diagrams of the printing head with infrared LED provided by the present invention;

fig. 9 is a second schematic structural view of the printing head with infrared LED according to the present invention;

fig. 10 is a system diagram of a 3D printing system provided by the present invention;

fig. 11 is a schematic structural view of the melting and mixing device provided by the present invention;

fig. 12 is a schematic diagram of a heating device provided by the present invention;

FIG. 13 is a schematic diagram of the inert gas device according to the present invention introducing inert gas into the forming box

In the figure: 1-an upper computer, 2-a printer body, 3-a melt mixing device, 4-an auxiliary device, 5-a controller, 6-an infrared LED group, 7-a slide rail, 8-a screw, 9-a pipeline, 10-a throttle reducing valve, 11-a pressure sensor, 12-a leakage valve, 21-XYZ three-axis platform, 22-a printing nozzle, 23-a forming box, 24-a tray, 25-a nozzle supporting rod, 26-a tray supporting rod, 211-an upper supporting frame, 212-a lower supporting frame, 213-a Z-direction transmission rod, 214-a Z-direction motor, 215-a synchronous belt, 216-a front X-direction base, 217-a rear X-direction base, 218-a Y-direction base, 219-an X-direction motor, 220-an X-direction synchronous belt, 221-a first fixing piece, 222-Y motor, 223-Y synchronous belt, 224-second fixed connection piece, 225-Z guide rod, 226-left slide rail, 227-right slide rail, 228-left slide block, 229-right slide block, 231-temperature control chamber, 232-transmission chamber, 2311-heat insulation plate, 31-asymmetric rotary box, 32-heating pipe, 33-rotating shaft, 34-rotating joint, 35-installation base, 36-support rod, 37-motor, 311-heating port, 312-air inlet, 313-gear, 314-bearing, 315-inlet, 316-outlet, 411-liquid medium box, 412-first ball valve, 413-liquid level liquid thermometer, 414-air filter, 415-second ball valve, 416-driving motor, 417 pump, 418 hose, 419 safety valve, 420 filter, 421 one-way valve, 422 accumulator, 423 temperature sensor, 424 shock-proof pressure gauge, 425 radiator.

Detailed Description

The technical solution claimed in the present invention will be described in further detail with reference to the accompanying drawings and specific examples.

In order to ensure the precision of 3D printing, the technical scheme of the utility model claimed herein is a printer for 3D printing that can realize the three direction movements of XYZ under the control of controlgear, and the structure of this printer has been illustrated by 1-9.

As can be seen from the figure, the printer provided by the present application includes an XYZ three-axis platform 21, a printing nozzle 22, a forming box 23 and a tray 24 for supporting product forming, the XYZ three-axis platform 21 is installed in the forming box 22, the printing nozzle 22 is installed on the XYZ three-axis platform 21 through a nozzle support rod 25, the tray 24 is installed on the XYZ three-axis platform 21 through a tray support rod 26, and the XYZ three-axis platform 21 drives the printing nozzle 22 and the tray 24 to move, as shown in fig. 1.

The three-axis platform 21 realizes the precise motion in the three directions of XYZ, the XYZ three-axis platform 21 controls the printing nozzle 22 to move precisely to spray under the control of the control device, the precise motion can be realized by only controlling the printing nozzle 22 to move in the three directions of XYZ, and the precise motion in the three directions of XYZ can also be realized by the composite motion of the printing nozzle and the tray. The utility model discloses what adopt here is that print shower nozzle and tray combined motion realize the accurate motion of XYZ three direction, and motion mode between them can be multiple, as shown in Table 1.

TABLE 1 arrangement of movements in XYZ three directions

Serial number	Tray motion	Movement of printing head	Remarks for note
				Scheme one	In the Z direction	In the XY direction	This scheme adopts
Scheme two	In the XY direction	In the Z direction
				Scheme three	In the X direction	In Yz direction

The present application takes the first scheme as an example to explain the control principle, that is, the z-direction movement is completed by the tray 24, and the XY-direction movement is completed by the print head 22, and the specific structure is as shown in fig. 2-5:

the XYZ three-axis platform comprises a Z-direction movement mechanism, an X-direction movement mechanism and a Y-direction movement mechanism, wherein the Z-direction movement mechanism comprises an upper support frame 211, a lower support frame 212, a Z-direction movement rod 213 and a Z-direction motor 214; the two ends of the Z-direction moving rod 213 are respectively mounted on the upper support frame 211 and the lower support frame 212, the tray 24 is mounted on the Z-direction moving rod 213 through the tray support rod 26, the output end of the Z-direction motor 214 drives the Z-direction moving rod 213 to rotate through the synchronous belt 216, and the tray support rod 26 moves up and down under the driving of the Z-direction moving rod 213 to realize the movement in the Z-direction;

the X-direction movement mechanism comprises a front X-direction base 216, a rear X-direction base 217, a Y-direction base 218, an X-direction motor 219 and an X-direction synchronous belt 220; the X-direction synchronous belt 220 spans between the front X-direction base 216 and the rear X-direction base 217, the Y-direction base 218 is mounted on the X-direction synchronous belt 220 through a first fixing piece 221, and the X-direction motor 219 drives the X-direction synchronous belt 220 to move along the X direction; the print head 22 is mounted on the Y-direction base 218 through the head support rod 25, so that the print head 22 moves in the X direction;

the Y-direction running mechanism comprises a Y-direction motor 222 and a Y-direction synchronous belt 223, the nozzle support rod 25 is mounted on the Y-direction synchronous belt 223 through a second fixed connection piece 224, and the Y-direction motor 222 drives the Y-direction synchronous belt 223 to move along the Y direction, so that the movement of the printing nozzle 22 in the Y direction is realized.

In order to realize precise limit and ensure the precision of printing, the Z-direction running mechanism further comprises Z-direction guide rods 225 which are arranged on the upper support frame 211 and the lower support frame 212 at two ends and are positioned at two sides of the Z-direction moving rod 213, and the tray 24 is connected with the Z-direction guide rods 225 in a sliding manner. The synchronous belt 215 is driven by the Z-direction motor 214 to perform circular motion, so as to drive the tray 24 to move up and down, and the tray 24 realizes precise spacing in the Z direction through the Z-direction guide rod 225.

The X-direction movement mechanism further comprises a left slide rail 226, a right slide rail 227, a left slide block 228 matched with the left slide rail 226 and a right slide block 229 matched with the right slide rail 227; the two ends of the left slide rail 226 and the right slide rail 227 are respectively connected with the front X-direction base 216 and the rear X-direction base 2217, and the left slider 228 and the right slider 229 are respectively slidably mounted on the left slide rail 226 and the right slide rail 227; the top surface of the left slider 228 and the top surface of the right slider 229 are connected to the Y-direction base 218, respectively. The X-direction synchronous belt 220 is driven by the X-direction motor to circularly move along the X-direction, and the Y-direction base 218 is driven by the X-direction synchronous belt 220 to circularly move along the X-direction, so that the left slider 228 and the right slider 229 are driven to circularly move along the X-direction at the same time, and precise limiting in the X-direction is realized through the left slider 226, the right slider 227, the left slider 228 and the right slider 229.

The forming box 23 in the printer is a fusion casting forming place and comprises a temperature control chamber 231 and a transmission chamber 232, the temperature control chamber 231 and the transmission chamber 232 are separated by a heat insulation plate, two gaps are arranged on the heat insulation plate, one gap is used for a spray head supporting rod 25, and the other gap is used for a tray supporting rod 26; the XYZ three-axis platform 21 is arranged in the transmission chamber 232, and the printing nozzle 22 and the tray 24 are respectively positioned in the temperature control chamber 231 through the nozzle support rod 25 and the tray support rod 26; the shell of the forming box 23 is sealed by the heat insulation plate, and the inside of the forming box 23 is ensured to be in a negative pressure or positive pressure environment.

A heating pipeline is arranged in a temperature control chamber 231 in the forming box 23, and a heat insulation pipeline is arranged in a transmission chamber 232; the forming box 23 is provided with a heating pipe interface communicated with a heating pipeline, a heat preservation pipe interface communicated with a heat preservation pipeline, a casting material interface, a vacuumizing interface, a high-pressure inert gas interface and a power supply interface for providing a power supply for the XYZ three-axis platform 21; the fused cast material interface also communicates with the print head 22. The heating liquid for heating is introduced into the heating pipeline through the heating pipe interface, the heat preservation liquid for heat preservation is introduced into the heat preservation pipeline through the heat preservation pipe interface, and the vacuumizing interface and the high-pressure inert gas interface are respectively used for connecting the vacuumizing device and the inert gas generator to be connected, so that vacuumizing and introducing inert gas into the forming box 23 are facilitated, and positive pressure or negative pressure is formed in the forming box 23.

In addition, printing shower nozzle 22 in this application printer can also adopt the shower nozzle of taking infrared LED, as shown in fig. 8 and fig. 9, increases an infrared LED group 6 on printing shower nozzle 22's basis, and infrared LED group 6 passes through slide rail 7 to be installed beside printing shower nozzle 22, can adjust the distance between printing shower nozzle 22 and the infrared LED group 6 through slide rail 7, fixes a position with set screw 8 screws up after the distance adjustment is accomplished.

The utility model provides a printer can be used for constituting 3D printing system, provides a 3D printing system who constitutes by it here, and its systematic diagram is as shown in FIG. 10, included:

the upper computer 1 is used for man-machine interaction operation;

the printer body 2 is used for printing and molding;

the melting and mixing device 3 is used for melting and mixing raw materials and propelling the slurry;

the auxiliary device 4 is used for providing high-temperature heating, normal-temperature heat preservation, high-pressure air and vacuum environment for the printer body 1 and the melt mixing device 3; and

and the controller 5 is used for receiving the instruction of the upper computer 1 and controlling the printer body 2, the melt mixing device 3 and the auxiliary device 4 to act. Valves are arranged between the melting and mixing device 3 and the auxiliary device 4 and the printer body 2.

Wherein, printer body 2 is promptly the utility model provides a printer.

The heating liquid provided by the auxiliary device is introduced into the heating pipeline through the heating pipe interface, the heat preservation liquid provided by the auxiliary device is introduced into the heat preservation pipeline through the heat preservation pipe interface, and the auxiliary device is also connected with the vacuumizing interface and the high-pressure inert gas interface to vacuumize and fill the forming box 23 with inert gas to form positive pressure or negative pressure.

The structure of the melt mixing device provided by the invention is shown in fig. 11, and comprises an asymmetric box 31, a heating pipe 32 laid on the periphery of the asymmetric box 31, a rotating shaft 33, a supporting piece 36 and a motor 37 for providing kinetic energy for the asymmetric box 31; the asymmetric rotary box 31 comprises a rotary joint 34, the rotary joint 34 is provided with a heating port 311 and an air inlet 312, and the asymmetric rotary box 31 further comprises a gear 313, a bearing 314, a feeding port 315 and a discharging port 316.

The heating port 311 and the air inlet 312 are respectively communicated with the heating pipe 32, and the feeding port 315 and the discharging port 316 are respectively communicated with the asymmetric rotating box 31; the asymmetric rotation box 31 and the motor 37 are mounted on a support 36, and the rotation shaft 33 is supported at the bottom center of the support 36.

The heating liquid flows into the heating pipe 32 wound on the surface of the rotary box through the heating port 311 on the rotary joint 34 to heat the rotary box; further, the outer periphery of the heating pipe 32 is covered with heat insulation. The rotary shaft 33 is mounted on the mounting base 35 through a rotary shaft support.

Of course, any other device capable of melt mixing solid and liquid phase materials may be used.

The method adopts the melt mixing device 3 to mix and dissolve the solid-phase particles and the liquid-phase materials, and comprises the following specific steps:

1) opening a feeding valve, allowing solid-phase particles and liquid-phase materials mixed according to a specified proportion to enter a melting and mixing device, wherein the feeding valve is respectively arranged between the melting and mixing device and a raw material storage tank, and the amount of the raw materials entering the melting and mixing device can be accurately controlled through the control of the valve;

2) heating liquid is introduced into the heating pipe to increase the temperature of the inner cavity of the melt-mixing device;

3) when the internal temperature of the melt-mixing device gradually rises and approaches to the melting temperature, the air inlet is communicated with negative pressure to vacuumize the melt-mixing device;

4) the motor starts to work to drive the rotary box to operate, and the slurry is mixed;

stirring the medicine slurry for a period of time, uniformly mixing, continuously introducing heating liquid to keep the temperature of an inner chamber of the melt-mixing device to prevent the medicine slurry from solidifying, and reducing the rotating speed of a motor to prevent solid-phase particles in the medicine slurry from depositing; so far, the medicine slurry is mixed completely.

Here, the structure of the printing nozzles 22 in the printer of the present application is as shown in fig. 6 and 7, and dual nozzles are used, one nozzle prints the molten material supplied from the melt-mixing device, and the other nozzle prints the interlayer connecting agent as shown in fig. 6; the two spray heads have independent heating pipelines and heat preservation pipelines, as shown in figure 7. Of course, the nozzle can be designed into one or more than one nozzle according to the requirements of the forming process, and the diameter of the spray hole is changed between phi 1mm and phi 5 mm.

The reason for arranging the heating pipeline and the heat preservation pipeline on the periphery of the printing nozzle 22 is to ensure that the mixed liquid in the printing nozzle 22 is in a fluid state. In order to better ensure the sealing performance of the forming box, sealing rings are arranged at the heating pipe interface, the heat preservation pipe interface, the casting material interface, the vacuumizing interface, the high-pressure inert gas interface and the power interface which are arranged on the forming box 23 for sealing.

The utility model provides a heating liquid, heat preservation liquid, vacuum extraction and positive negative pressure among printer body 2, the melt-mixing device form among the 3D printing system and realize through auxiliary device 4, and this auxiliary device 4 has included the heating device who is used for producing heating medium, has been used for producing the heat preservation device of heat preservation medium, has been used for extracting the vacuous evacuating device and has been used for providing gas and make printer body 2 and melt-mixing device 4 form the high-pressure inert gas device of positive negative pressure.

In order to guarantee the security of system, the utility model discloses a mobile medium heats and keeps warm, and heating commonly used, heat preservation medium have oil or water, because water easily forms the incrustation scale and corrodes the pipeline, so the utility model discloses adopt the oil medium to carry out heat-conduction here. The utility model provides a heating device's structure figure 12 is shown, including liquid medium case 411, first ball valve 412, liquid level liquid temperature meter 413, air cleaner 414, second ball valve 415, driving motor 416, pump 417, hose 418, relief valve 419, filter 420, check valve 421, energy storage ware 422, temperature sensor 423, shock-resistant manometer 424 and radiator 425. The liquid medium tank 411 may be a specific container selected according to the heating medium, for example, oil is selected as the heating medium, the liquid medium tank 411 may be a stainless steel oil tank, and the corresponding pump 417 is an oil pump.

The heat preservation device in the auxiliary device is used for ensuring that a servo motor and electronic elements in the transmission chamber can work normally, the environmental temperature of the transmission chamber needs to be adjusted, a feasible mode is to cool by adopting a fluid oil medium, and a schematic diagram of the heat preservation device is the same as that of a heating device.

The inert gas generated by the high-pressure inert gas device is introduced into the forming box 23 through the pipeline 9, so that positive pressure or negative pressure is formed in the forming box 23. The pipeline is provided with a throttle pressure reducing valve 10, and the on-off of the throttle pressure reducing valve is controlled by a controller. In order to monitor the pressure and ensure that the pressure in the forming box 23 is within the safe range, the utility model discloses install pressure sensor 11 and leak valve 12 through pipeline 8 and forming box 23 intercommunication on the pipeline, as shown in fig. 13, pressure sensor 11 measures the pressure in forming box 23 in real time, and transmit the pressure value measured to the controller, when pressure is not enough, the controller opens choke valve 10 and pressurizes forming box 23, stops inflating when reaching the set pressure; if the pressure is detected to be too high or the high-pressure gas in the forming box 23 needs to be exhausted, the controller controls the leakage valve 12 to be opened to exhaust the gas, so that the pressure in the forming box 23 is ensured to be in a safe range.

The vacuumizing device enables the product to be solidified and formed in a vacuum environment, and the stability of the product is guaranteed.

The described Z-direction transmission rod is of a screw nut structure, the tray 24 forms a cantilever structure through the tray support rod 26, the root part of the tray is assembled with the nut, and the Z-direction motor drives the synchronous belt 215 to rotate circularly, so that the nut is driven to move up and down on the screw, and the tray 24 moves up and down.

The utility model provides a high-pressure inert gas device among the auxiliary device can adopt any one kind of device that can produce inert gas that has now, like high-pressure nitrogen cylinder.

In addition, the bottom of the temperature control chamber 231 of the forming box 23 of the present invention is provided with a heat insulation board 2311, which is located below the tray 24, as shown in fig. 2.

The utility model provides a 3D printing system's concrete printing step as follows:

step 1: an operator calls three-dimensional modeling software in the upper computer to model the preprinted model to form an STL data file;

step 2: an operator calls slicing software in the upper computer to slice the geometric model to generate a G-code capable of guiding printing;

and step 3: printing preparation work, wherein an operator powers on the controller, the printer body, the melt mixing device and the auxiliary device, a G-code model is downloaded to the controller through main control software on the upper computer, and the controller controls the starting of the auxiliary device;

and 4, step 4: an operator adds the raw materials into the melting and mixing device, and the controller controls the melting and mixing device to start working to prepare slurry;

and 5: after the preparation of the slurry is finished, preparing the temperature of the forming box to the process set temperature;

step 6: the controller controls the printer body to start printing according to the instruction of the G-code;

and 7: after the printer body prints a layer of medicinal slurry, distributing an interlayer connecting agent on the printer body;

and 8: the controller prints the next layer according to the G-code;

and step 9: repeating the actions from the step 6 to the step 8 until the whole model is printed;

step 10: solidifying the model to be printed;

step 11: and after printing is finished, releasing the pressure of each device and powering off the devices.

The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention are all covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (7)

1. A printer for 3D printing, characterized in that: including XYZ three-axis platform (21), print shower nozzle (22), shaping case (23) and tray (24), XYZ three-axis platform (21) install in shaping case (23), print shower nozzle (22) through shower nozzle bracing piece (25) install in on XYZ three-axis platform (21), tray (24) through tray bracing piece (26) install in on XYZ three-axis platform (21), XYZ three-axis platform (21) drive print shower nozzle (22) with tray (24) motion.

2. Printer for 3D printing according to claim 1, characterized in that: the XYZ three-axis platform (21) comprises a Z-direction movement mechanism, an X-direction movement mechanism and a Y-direction movement mechanism, wherein the Z-direction movement mechanism comprises an upper support frame (211), a lower support frame (212), a Z-direction movement rod (213) and a Z-direction motor (214); two ends of the Z-direction moving rod (213) are respectively arranged on the upper supporting frame (211) and the lower supporting frame (212), the tray (24) is arranged on the Z-direction moving rod (213) through the tray supporting rod (26), the output end of the Z-direction motor (214) drives the Z-direction moving rod (213) to rotate through a synchronous belt (215), and the tray supporting rod (26) moves up and down under the driving of the Z-direction moving rod (213);

the X-direction movement mechanism comprises a front X-direction base (216), a rear X-direction base (217), a Y-direction base (218), an X-direction motor (219) and an X-direction synchronous belt (220); the X-direction synchronous belt (220) stretches across between the front X-direction base (216) and the rear X-direction base (217), the Y-direction base (218) is mounted on the X-direction synchronous belt (220) through a first fixing connection piece (221), and the X-direction motor (219) drives the X-direction synchronous belt (220) to move along the X direction; the printing spray head (22) is arranged on the Y-direction base (218) through a spray head support rod (25);

y includes Y to motor (222) and Y to hold-in range (223) to running mechanism, shower nozzle bracing piece (25) install through second rigid coupling piece (224) Y is to holding-in range (223) on, Y drives to motor (222) Y is to holding-in range (223) along Y to the motion.

3. Printer for 3D printing according to claim 2, characterized in that: the Z-direction running mechanism also comprises Z-direction guide rods (225) of which two ends are arranged on the upper support frame (211) and the lower support frame (212) and are positioned at two sides of the Z-direction moving rod (213); the tray (24) and the Z-direction guide rod (225) are in sliding connection.

4. Printer for 3D printing according to claim 2, characterized in that: the X-direction movement mechanism further comprises a left slide rail (226), a right slide rail (227), a left slide block (228) matched with the left slide rail (226) and a right slide block (229) matched with the right slide rail (227); two ends of the left sliding rail (226) and the right sliding rail (227) are respectively connected with the front X-direction base (216) and the rear X-direction base (217), and the left sliding block (228) and the right sliding block (229) are respectively installed on the left sliding rail (226) and the right sliding rail (227) in a sliding manner; the top surface of the left slider (228) and the top surface of the right slider (229) are respectively connected with the Y-direction base (218).

5. Printer for 3D printing according to claim 2, characterized in that: the forming box (23) comprises a temperature control chamber (231) and a transmission chamber (232), and the temperature control chamber (231) and the transmission chamber (232) are separated by a heat insulation plate; the XYZ three-axis platform (21) is arranged in the transmission chamber (232), and the printing nozzle (22) and the tray (24) are respectively positioned in the temperature control chamber (231) through the nozzle supporting rod (25) and the tray supporting rod (26); the shell of the forming box (23) is sealed by an insulation board, a heating pipeline is arranged in the temperature control chamber (231), and an insulation pipeline is arranged in the transmission chamber (232); the forming box (23) is provided with a heating pipe interface communicated with the heating pipeline, a heat preservation pipe interface communicated with the heat preservation pipeline, a fusion casting material interface communicated with the fusion mixing device, a vacuumizing interface, a high-pressure inert gas interface and a power supply interface for supplying power to the XYZ three-axis platform (21); the fused cast material interface is also in communication with the print head (22).

6. Printer for 3D printing according to claim 1, characterized in that: the print head (22) comprises a dual head.

7. Printer for 3D printing according to claim 1, characterized in that: the printing device is characterized by further comprising an infrared LED group (6) which is arranged beside the printing spray head (22) through a slide rail (7).

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