CN111070678B

CN111070678B - 3D printing equipment and 3D printing method for printing photosensitive material

Info

Publication number: CN111070678B
Application number: CN201911153877.3A
Authority: CN
Inventors: 张盼
Original assignee: Wuhan Zhongtian Yundi Technology Co ltd
Current assignee: Wuhan Zhongtian Yundi Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2022-04-22
Anticipated expiration: 2039-11-22
Also published as: CN111070678A

Abstract

The invention discloses 3D printing equipment and a 3D printing method for printing photosensitive materials, and the 3D printing equipment and the 3D printing method comprise a base, wherein the left side and the right side of the top of the base are fixedly connected with side frames, the tops of the opposite sides of the two side frames are respectively connected with a driving mechanism in a sliding manner, a linear guide rail is fixedly connected between the two driving mechanisms, the front side of the linear guide rail is connected with a translation mechanism in a sliding manner, the front side of the translation mechanism is fixedly connected with a printing mechanism, the printing mechanism comprises a fixed cylinder, and the upper side and the lower side of the inner part of the fixed cylinder are respectively and fixedly connected with an upper sealing plate and a lower sealing plate. According to the 3D printing device and the 3D printing method for printing the photosensitive material, the small air pump is matched with the pipeline to discharge the redundant heat generated by the working process of the melting box into the right space inside the mixing barrel, the moisture inside the space can be dried, the redundant heat is reasonably utilized, the electric heating structure is saved, and the power loss is also saved.

Description

3D printing equipment and 3D printing method for printing photosensitive material

Technical Field

The invention relates to the technical field of 3D printing, in particular to 3D printing equipment and a 3D printing method for printing photosensitive materials.

Background

3D printing (3DP), a technique for constructing objects by layer-by-layer printing using bondable materials such as powdered metals or plastics based on digital model files, is one of the rapid prototyping techniques, also known as additive manufacturing. 3D printing is usually performed using digital technology material printers, which are often used for manufacturing models in the fields of mold manufacturing, industrial design, etc., and later gradually for direct manufacturing of some products, and there are already components printed using this technology, which have applications in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.

In the prior art, as CN109080130A discloses a 3D printing apparatus and a 3D printing method for printing photosensitive material, before changing different color pigments, a mixing tank and a pipeline are washed and dried to prevent the pigment used before from polluting the subsequent pigment, but the drying of moisture takes a long time, and the process needs to wait for a long time, so that the printing progress is delayed, and a drying device needs to be electrically heated, and extra electric power is consumed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides 3D printing equipment and a 3D printing method for printing a photosensitive material, and solves the problems that in the prior art, for example, CN109080130A discloses a 3D printing equipment and a 3D printing method for printing a photosensitive material, a long time is spent in a moisture drying process, the printing progress is delayed, and a drying device needs to be electrically heated, so that extra electric power is consumed.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: A3D printing device for printing photosensitive materials comprises a base, wherein the left side and the right side of the top of the base are fixedly connected with side frames, the tops of the opposite sides of the two side frames are respectively connected with a driving mechanism in a sliding manner, a linear guide rail is fixedly connected between the two driving mechanisms, the front of the linear guide rail is connected with a translation mechanism in a sliding manner, the front of the translation mechanism is fixedly connected with a printing mechanism, the printing mechanism comprises a fixed cylinder, the upper side and the lower side of the inside of the fixed cylinder are respectively fixedly connected with an upper sealing plate and a lower sealing plate, a mixing cylinder is rotatably connected between the upper sealing plate and the lower sealing plate, a partition plate is fixedly connected inside the mixing cylinder, a servo motor is fixedly connected with the top of the upper sealing plate and positioned right above the middle of the partition plate, and the bottom end of an output shaft of the servo motor penetrates through the upper sealing plate and is fixedly connected with the center of the partition plate, the top of upper seal plate and the right side intercommunication that is located the baffle have the air duct, the right side fixedly connected with air pump box of a fixed section of thick bamboo, and the small-size air pump of inside fixedly connected with of air pump box, the right-hand member of air duct and the gas outlet intercommunication of small-size air pump, small-size air pump air inlet intercommunication has the intake pipe, the lower right corner fixedly connected with insulation can of frame inner chamber, and the inside of insulation can is through cushion fixedly connected with melting case, the one end that small-size air pump was kept away from to the intake pipe runs through actuating mechanism, side frame and frame in proper order and communicates with the top of insulation can.

Preferably, the left side fixedly connected with electric putter at upper seal plate top, electric putter's bottom runs through upper seal plate and extends to the bottom of upper seal plate, electric putter's bottom fixedly connected with arc stirring frame, and the bottom of upper seal plate set up with the recess of arc stirring frame looks adaptation.

Preferably, the top of upper seal plate just is located and communicates between servo motor and the arc stirring frame with pigment pipe, and pigment pipe is provided with three altogether, the top of upper seal plate just is located the front and back both sides of pigment pipe and communicates respectively with gas tube and water injection pipe.

Preferably, the equal electric connection in electric putter and servo motor's top has the wire, the outside of wire, pigment pipe, gas tube, water injection pipe and intake pipe and the top cover that is located linear guide are equipped with flexible protection tube, and the outer fixed surface of flexible protection tube is connected with magnetism cover, linear guide's top and the equal fixedly connected with limiting plate in both sides around being located flexible protection tube.

Preferably, the bottom of the fixed cylinder and the right side of the partition plate are in threaded connection with a water receiving box, the top of the water receiving box is abutted to the bottom of the lower sealing plate, an air outlet nozzle penetrates through the space between the top of the right wall of the water receiving box and the bottom of the right wall of the fixed cylinder, and water absorbing sponge is arranged inside the water receiving box.

Preferably, the bottom of the lower sealing plate and the left side of the partition plate are communicated with an electromagnetic valve, the bottom of the electromagnetic valve is communicated with a hose, and the bottom end of the hose penetrates through the bottom of the fixed cylinder and is communicated with a discharge nozzle.

Preferably, a lifting push rod is fixedly connected between the front face of the translation mechanism and the left side of the fixed cylinder, and a pushing frame is fixedly connected between the bottom end of an output rod of the lifting push rod and the outer surface of the discharge nozzle.

Preferably, the top on the right side of the melting box is communicated with a feeding pipe, the right end of the feeding pipe sequentially penetrates through the right walls of the heat insulation box and the base and extends to the outside of the base, the bottom on the right side of the heat insulation box is fixedly connected with a heater, and a heating section of the heater extends to the inside of the melting box.

Preferably, the top of frame just is located sliding connection and has the slip supporter between two side frames, the centre at frame top just is located the bottom rotation of slip supporter and is connected with supporting roller.

The invention also discloses a 3D printing method of the 3D printing equipment for printing the photosensitive material, which specifically comprises the following steps:

step one, preparation work: firstly, connecting equipment with a power supply, starting operating equipment, firstly controlling a heater to work for preheating, then adding a printed main body material into a melting box from a feeding pipe, melting the material by using the heater, then pumping the melted main body material into a mixing barrel through an additionally arranged pump body, then opening a valve on a pigment pipe, and adding three pigments into the mixing barrel according to a proportion by using a pump body in a pigment adding mechanism;

step two, a printing procedure: after the main material and the pigment are added, the opened valve is closed, the electric push rod is started to work in a reciprocating mode to drive the arc-shaped stirring frame to move up and down, the pigment and the main material are stirred, after the stirring is carried out for one minute, the electric push rod is controlled to reset, then the driving mechanism and the translation mechanism are controlled to work to drive the printing mechanism to move left and right and back and forth, then the electromagnetic valve on the hose is opened, the valve on the inflation tube and an air pump connected with the valve are simultaneously opened, the inflation tube inflates air into the left space inside the fixed cylinder, and the material in the inflation tube is extruded downwards from the discharge nozzle to be printed;

step three, pigment cleaning: when the pigment needs to be replaced, the printing mechanism is controlled to move to the right side and stop, then the valve on the water injection pipe and the water pump connected with the valve are controlled to be opened, purified water is injected into the left space inside the mixing barrel through the water injection pipe to flush the inside of the mixing barrel, then water is sprayed out through the discharge nozzle, and the hose and the discharge nozzle are cleaned together;

step four, drying: close all valves of opening after the washing, then control servo motor drives mixing barrel and rotates 180, make the abluent cavity in the mixing barrel shift to the right side, the left side can add the material once more at this moment and stir and print, and the small-size air pump in right side starts, give off the melting case and store in the unnecessary heat of insulation can through intake pipe and air duct in discharging the mixing barrel right side cavity in, dry its inside, last damp and hot air is discharged through the air outlet nozzle, the water that flows down in the mixing barrel then flows in the water receiver and is absorbed by the sponge that absorbs water, regularly with the water receiver spiral down, it can to change dry sponge that absorbs water.

(III) advantageous effects

The invention provides 3D printing equipment and a 3D printing method for printing photosensitive materials. Compared with the prior art, the method has the following beneficial effects:

(1) the air guide pipe is communicated with the top of the upper sealing plate and the right side of the partition plate, the air pump box is fixedly connected to the right side of the fixed cylinder, the small air pump is fixedly connected to the inside of the air pump box, the right end of the air guide pipe is communicated with the air outlet of the small air pump, the air inlet of the small air pump is communicated with the air inlet pipe, the heat preservation box is fixedly connected to the lower right corner of the inner cavity of the machine base, the melting box is fixedly connected to the inside of the heat preservation box through the cushion block, one end, far away from the small air pump, of the air inlet pipe sequentially penetrates through the driving mechanism, the side frame and the machine base and is communicated with the top of the heat preservation box, redundant heat generated when the melting box works is discharged into the right side space inside the mixing cylinder by utilizing a small air pump matching pipeline, the moisture in the space can be dried, the redundant heat is reasonably utilized, and the electric heating structure is saved, power consumption is also saved.

(2) The 3D printing device and the 3D printing method for printing the photosensitive material are characterized in that the printing mechanism comprises a fixed cylinder, an upper sealing plate and a lower sealing plate are fixedly connected to the upper side and the lower side inside the fixed cylinder respectively, a mixing cylinder is rotatably connected between the upper sealing plate and the lower sealing plate, a partition plate is fixedly connected inside the mixing cylinder, a servo motor is fixedly connected to the top of the upper sealing plate and is positioned right above the middle of the partition plate, the bottom end of an output shaft of the servo motor penetrates through the upper sealing plate and is fixedly connected with the center of the partition plate, an electric push rod is fixedly connected to the left side of the top of the upper sealing plate, the bottom end of the electric push rod penetrates through the upper sealing plate and extends to the bottom of the upper sealing plate, an arc-shaped stirring frame is fixedly connected to the bottom of the electric push rod, a groove matched with the arc-shaped stirring frame is formed in the bottom of the upper sealing plate, a pigment tube is communicated between the servo motor and the arc-shaped stirring frame, and the pigment pipe is provided with threely altogether, and the top of upper seal plate just is located the front and back both sides of pigment pipe and communicates respectively and has gas tube and water injection pipe, divides into two parts through setting up the baffle with mixing barrel inner space, and left side space can be used to stir mixed pigment, washes and extrudes the work, and right side space is used for drying, and two parts can go on simultaneously, mutual noninterference, and utilize servo motor can make the both sides space switch back and forth, and then improved work efficiency.

(3) This a 3D printing apparatus and 3D printing method for printing photosensitive material, there is the wire through the equal electric connection in electric putter and servo motor's top, the wire, pigment pipe, the gas tube, the outside of water injection pipe and intake pipe and the top cover that is located linear guide are equipped with flexible protection tube, and the outer fixed surface of flexible protection tube is connected with the magnetism cover, linear guide's top and the equal fixedly connected with limiting plate in both sides around being located flexible protection tube, entangle the wire through setting up flexible protection tube, pigment pipe, the gas tube, water injection pipe and intake pipe, not only can play the effect of protection and receipts bundle, cooperation magnetism cover uses, can also play the effect of location, the magnetism cover can keep flexible protection tube part to adsorb at the linear guide top, avoid it to swing at will and influence work, convenient to use and with low costs.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of a printing mechanism of the present invention;

FIG. 3 is a schematic view of the connection of the printing mechanism and the thermal container of the present invention;

FIG. 4 is a top view of the upper seal plate structure of the present invention;

FIG. 5 is a top view of the mixing bowl configuration of the present invention.

In the figure, 1-machine base, 2-side machine frame, 3-driving mechanism, 4-linear guide rail, 5-translation mechanism, 6-printing mechanism, 7-fixed cylinder, 8-upper sealing plate, 9-lower sealing plate, 10-mixing cylinder, 11-clapboard, 12-servo motor, 13-air guide tube, 14-air pump box, 15-small air pump, 16-air inlet tube, 17-heat preservation box, 18-melting box, 19-electric push rod, 20-arc stirring frame, 21-pigment tube, 22-air charging tube, 23-water injection tube, 24-lead, 25-flexible protection tube, 26-magnetic sleeve, 27-limiting plate, 28-water receiving box, 29-water absorbing sponge, 30-electromagnetic valve, 31-hose, 32-a discharge nozzle, 33-a lifting push rod, 34-a pushing frame, 35-a feeding pipe, 36-a heater, 37-a sliding storage rack and 38-an air outlet nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: A3D printing device for printing photosensitive materials comprises a machine base 1, wherein a sliding rack 37 is connected to the top of the machine base 1 and positioned between two side frames 2 in a sliding manner, a supporting roller is rotatably connected to the middle of the top of the machine base 1 and positioned at the bottom of the sliding rack 37, the left side and the right side of the top of the machine base 1 are fixedly connected with the side frames 2, the tops of the opposite sides of the two side frames 2 are respectively connected with a driving mechanism 3 in a sliding manner, the top of the right side driving mechanism 3 is connected with a pigment adding mechanism, the bottom of the right side driving mechanism is connected with the top of the right side frame 2 in a sliding manner, three-primary-color pigments are contained in the pigment adding mechanism and can be mixed into different colors after being added in proportion, a linear guide rail 4 is fixedly connected between the two driving mechanisms 3, a translation mechanism 5 is connected to the front of the linear guide rail 4 in a sliding manner, and a lifting push rod 33 is fixedly connected between the front of the translation mechanism 5 and the left side of a fixed cylinder 7, a pushing frame 34 is fixedly connected between the bottom end of an output rod of a lifting push rod 33 and the outer surface of a discharge nozzle 32, a printing mechanism 6 is fixedly connected on the front surface of the translation mechanism 5, the printing mechanism 6 comprises a fixed cylinder 7, a water receiving box 28 is in threaded connection with the bottom of the fixed cylinder 7 and positioned on the right side of a partition plate 11, the top of the water receiving box 28 is abutted against the bottom of a lower sealing plate 9, an air outlet nozzle 38 penetrates through the top of the right wall of the water receiving box 28 and the bottom of the right wall of the fixed cylinder 7, a water absorbing sponge 29 is arranged inside the water receiving box 28, the water absorbing sponge 29 is arranged to prevent the water inside the water receiving box 28 from shaking, an upper sealing plate 8 and a lower sealing plate 9 are fixedly connected on the upper side and the lower side inside of the fixed cylinder 7 respectively, a mixing cylinder 10 is rotatably connected between the upper sealing plate 8 and the lower sealing plate 9, an electric push rod 19 is fixedly connected on the left side of the top of the upper sealing plate 8, the bottom end of the electric push rod 19 penetrates through the upper sealing plate 8 and extends to the bottom of the upper sealing plate 8, the bottom end of the electric push rod 19 is fixedly connected with an arc-shaped stirring frame 20, the bottom of the upper sealing plate 8 is provided with three grooves matched with the arc-shaped stirring frame 20, the top of the upper sealing plate 8 is communicated between the servo motor 12 and the arc-shaped stirring frame 20, the top of the upper sealing plate 8 is communicated with three pigment tubes 21, the top of the upper sealing plate 8 is communicated with an inflation tube 22 and a water injection tube 23 respectively at the front side and the rear side of the pigment tube 21, the inflation tube 22, the water injection tube 23 and the air inlet tube 16 are all provided with electromagnetic valves, all electric equipment is uniformly controlled by an electric control device in the machine base 1 according to a program, the space in the mixing barrel 10 is divided into two parts by arranging a partition plate 11, the space at the left side can be used for stirring and mixing pigments and flushing and extruding, the space at the right side is used for drying, the two parts can be carried out simultaneously and are not interfered with each other, and the spaces at the two sides can be switched back and forth by utilizing the servo motor 12, further, the working efficiency is improved, the top of the electric push rod 19 and the top of the servo motor 12 are electrically connected with a lead 24, the pigment tube 21, the inflation tube 22, the water injection tube 23 and the air inlet tube 16 are sleeved with a flexible protection tube 25, the outer surface of the flexible protection tube 25 is fixedly connected with a magnetic sleeve 26, the top of the linear guide rail 4 is fixedly connected with a limit plate 27 at the front side and the rear side of the flexible protection tube 25, the lead 24, the pigment tube 21, the inflation tube 22, the water injection tube 23 and the air inlet tube 16 are sleeved by the flexible protection tube 25, the magnetic sleeve 26 can play a role of protecting and bundling, is matched with the magnetic sleeve 26 for use and can play a role of positioning, the magnetic sleeve 26 can keep the flexible protection tube 25 partially adsorbed at the top of the linear guide rail 4 to avoid the influence of random swinging on the work, the use is convenient and low in cost, the bottom of the lower sealing plate 9 and the left side of the partition plate 11 are communicated with an electromagnetic valve 30, the bottom of the electromagnetic valve 30 is communicated with a hose 31, the bottom end of the hose 31 penetrates through the bottom of the fixed cylinder 7 and is communicated with a discharge nozzle 32, the interior of the mixing cylinder 10 is fixedly connected with a partition plate 11, the top of the upper sealing plate 8 is fixedly connected with a servo motor 12 right above the middle of the partition plate 11, the bottom end of an output shaft of the servo motor 12 penetrates through the upper sealing plate 8 and is fixedly connected with the center of the partition plate 11, the top of the upper sealing plate 8 and the right side of the partition plate 11 are communicated with an air guide pipe 13, the right side of the fixed cylinder 7 is fixedly connected with an air pump box 14, the interior of the air pump box 14 is fixedly connected with a small air pump 15, the right end of the air guide pipe 13 is communicated with an air outlet of the small air pump 15, an air inlet pipe 16 is communicated with an air inlet pipe 15, the lower right corner of the inner cavity of the machine base 1 is fixedly connected with an insulation box 17, the surface of the insulation box 17 is provided with small air holes for balancing the internal and external pressure difference, and the interior of the insulation box 17 is fixedly connected with a melting box 18 through a cushion block, the material in the melting box 18 is pumped into the mixing barrel 10 through an additional pump body, the top on the right side of the melting box 18 is communicated with a feeding pipe 35, the right end of the feeding pipe 35 sequentially penetrates through the right walls of the heat preservation box 17 and the base 1 and extends to the outside of the base 1, the heater 36 is fixedly connected to the bottom on the right side of the heat preservation box 17, the heating section of the heater 36 extends to the inside of the melting box 18, one end, far away from the small air pump 15, of the air inlet pipe 16 sequentially penetrates through the driving mechanism 3, the side frame 2 and the base 1 and is communicated with the top of the heat preservation box 17, redundant heat generated when the melting box 18 works is discharged into the right side space inside the mixing barrel 10 by the aid of the small air pump 15 matched pipeline, the moisture in the space can be dried by blowing, the redundant heat is reasonably utilized, an electric heating structure is saved, and electric power loss is also saved.

step one, preparation work: firstly, connecting equipment with a power supply, starting the operation equipment, firstly controlling a heater 36 to work for preheating, then adding a printed main body material into a melting box 18 from a feeding pipe 35, melting the material by using the heater 36, then pumping the melted main body material into a mixing barrel 10 by using an additionally arranged pump body, then opening a valve on a pigment pipe 21, and adding three pigments into the mixing barrel 10 in proportion by using a pump body in a pigment adding mechanism;

step two, a printing procedure: after the main material and the pigment are added, the opened valve is closed, the electric push rod 19 is started to work in a reciprocating mode to drive the arc-shaped stirring frame 20 to move up and down, the pigment and the main material are stirred, after the pigment and the main material are stirred for one minute, the electric push rod 19 is controlled to reset, then the driving mechanism 3 and the translation mechanism 5 are controlled to work to drive the printing mechanism 6 to move left and right and back and forth, then the electromagnetic valve 30 on the hose 31 is opened, the valve on the inflation tube 22 and an air pump connected with the valve are opened, the inflation tube 22 inflates air into the left space inside the fixed cylinder 7, and the material in the inflation tube is extruded downwards from the discharge nozzle 32 to be printed;

step three, pigment cleaning: when the pigment needs to be replaced, the printing mechanism 6 is controlled to move to the right side and stop, then the valve on the water injection pipe 23 and the water pump connected with the valve are controlled to be opened, purified water is injected into the left space inside the mixing barrel 10 through the water injection pipe 23 to wash the inside of the mixing barrel, then water is sprayed out through the discharging nozzle 32, and the hose 31 and the discharging nozzle 32 are cleaned together;

step four, drying: close all valves of opening after the washing, then control servo motor 12 drives mixing barrel 10 and rotates 180, make the abluent cavity in mixing barrel 10 shift to the right side, the left side can add the material once more at this moment and stir and print, and the small-size air pump 15 in right side starts, in discharging the unnecessary heat that melts case 18 and store in insulation can 17 right side cavity in mixing barrel 10 through intake pipe 16 and air duct 13, dry its inside, wet hot-air passes through air outlet 38 at last and discharges, the water that flows down in mixing barrel 10 then flows into in water receiving box 28 and is absorbed by water-absorbing sponge 29, regularly with water receiving box 28 unscrewing, change dry water-absorbing sponge 29 can.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a 3D printing apparatus for printing photosensitive material, includes frame (1), the equal fixedly connected with side frame (2) in the left and right sides at frame (1) top, and the equal sliding connection in top of two relative one sides of side frame (2) has actuating mechanism (3), two fixedly connected with linear guide (4) between actuating mechanism (3), and the positive sliding connection of linear guide (4) has translation mechanism (5), the positive fixedly connected with printing mechanism (6) of translation mechanism (5), its characterized in that: the printing mechanism (6) comprises a fixed cylinder (7), an upper sealing plate (8) and a lower sealing plate (9) are fixedly connected to the upper side and the lower side of the interior of the fixed cylinder (7) respectively, a mixing cylinder (10) is rotatably connected between the upper sealing plate (8) and the lower sealing plate (9), a partition plate (11) is fixedly connected to the interior of the mixing cylinder (10), a servo motor (12) is fixedly connected to the top of the upper sealing plate (8) and is positioned right above the middle of the partition plate (11), the bottom end of an output shaft of the servo motor (12) penetrates through the upper sealing plate (8) and is fixedly connected with the center of the partition plate (11), an air guide pipe (13) is communicated with the top of the upper sealing plate (8) and is positioned on the right side of the partition plate (11), an air pump box (14) is fixedly connected to the right side of the fixed cylinder (7), and a small air pump (15) is fixedly connected to the interior of the air pump box (14), the right-hand member of air duct (13) and the gas outlet intercommunication of small-size air pump (15), small-size air pump (15) air inlet intercommunication has intake pipe (16), lower right corner fixedly connected with insulation can (17) of frame (1) inner chamber, and insulation can (17) inside through cushion fixedly connected with melting case (18), the one end that small-size air pump (15) were kept away from in intake pipe (16) runs through actuating mechanism (3), side frame (2) and frame (1) in proper order and communicates with the top of insulation can (17).

2. A 3D printing device for printing photosensitive material according to claim 1, characterized in that: the left side fixedly connected with electric putter (19) at upper seal plate (8) top, the bottom of electric putter (19) runs through upper seal plate (8) and extends to the bottom of upper seal plate (8), the bottom fixedly connected with arc stirring frame (20) of electric putter (19), and the bottom of upper seal plate (8) seted up with the recess of arc stirring frame (20) looks adaptation.

3. A 3D printing device for printing photosensitive material according to claim 2, characterized in that: the top of the upper sealing plate (8) is located between the servo motor (12) and the arc-shaped stirring frame (20) and is communicated with three pigment tubes (21), and the top of the upper sealing plate (8) is located at the front side and the rear side of the pigment tubes (21) and is respectively communicated with an air filling tube (22) and a water injection tube (23).

4. A 3D printing device for printing photosensitive material according to claim 3, characterized in that: the equal electric connection in top of electric putter (19) and servo motor (12) has wire (24), the outside of wire (24), pigment pipe (21), gas tube (22), water injection pipe (23) and intake pipe (16) and the top cover that is located linear guide (4) are equipped with flexible protection tube (25), and the outer fixed surface of flexible protection tube (25) is connected with magnetism cover (26), the top of linear guide (4) and the equal fixedly connected with limiting plate (27) in both sides around being located flexible protection tube (25).

5. A 3D printing device for printing photosensitive material according to claim 1, characterized in that: the bottom of a fixed cylinder (7) is connected with a water receiving box (28) through threads on the right side of a partition plate (11), the top of the water receiving box (28) is abutted to the bottom of a lower sealing plate (9), an air outlet nozzle (38) penetrates through the top of the right wall of the water receiving box (28) and the bottom of the right wall of the fixed cylinder (7), and a water absorbing sponge (29) is arranged inside the water receiving box (28).

6. A 3D printing device for printing photosensitive material according to claim 1, characterized in that: the bottom of the lower sealing plate (9) is communicated with an electromagnetic valve (30) on the left side of the partition plate (11), the bottom of the electromagnetic valve (30) is communicated with a hose (31), and the bottom end of the hose (31) penetrates through the bottom of the fixed cylinder (7) and is communicated with a discharge nozzle (32).

7. A3D printing device for printing photosensitive material according to claim 6, characterized in that: fixedly connected with lift push rod (33) between the front of translation mechanism (5) and the left side of fixed cylinder (7), and fixedly connected with propelling movement frame (34) between the bottom of lift push rod (33) output rod and the surface of ejection of compact mouth (32).

8. A 3D printing device for printing photosensitive material according to claim 1, characterized in that: the top on melting case (18) right side intercommunication has inlet pipe (35), the right-hand member of inlet pipe (35) runs through the right wall of insulation can (17) and frame (1) in proper order and extends to the outside of frame (1), bottom fixedly connected with heater (36) on insulation can (17) right side, and the heating section of heater (36) extends to the inside of melting case (18).

9. A 3D printing device for printing photosensitive material according to claim 1, characterized in that: the top of frame (1) just is located sliding connection between two side frames (2) and has slip supporter (37), the middle of frame (1) top just is located the bottom rotation of slip supporter (37) and is connected with supporting roller.

10. A 3D printing device for printing photosensitive material according to any of claims 1-9, characterized in that: the 3D printing method specifically comprises the following steps:

step one, preparation work: firstly, connecting equipment with a power supply, starting the operation equipment, firstly controlling a heater (36) to work for preheating, then adding a printed main body material into a melting box (18) from a feeding pipe (35), melting the material by using the heater (36), pumping the melted main body material into a mixing barrel (10) through an additionally arranged pump body, then opening a valve on a pigment pipe (21), and adding three pigments into the mixing barrel (10) in proportion by using a pump body in a pigment adding mechanism;

step two, a printing procedure: after the main material and the pigment are added, the opened valve is closed, the electric push rod (19) is started to work in a reciprocating mode to drive the arc-shaped stirring frame (20) to move up and down, the pigment and the main material are stirred, after stirring for one minute, the electric push rod (19) is controlled to reset, then the driving mechanism (3) and the translation mechanism (5) are controlled to work to drive the printing mechanism (6) to move left and right and back and forth, then the electromagnetic valve (30) on the hose (31) is opened, and meanwhile, the valve on the inflation tube (22) and an air pump connected with the valve are opened, so that the inflation tube (22) inflates the left space inside the fixed cylinder (7), and the materials in the inflation tube are extruded downwards from the discharge nozzle (32) to be printed;

step three, pigment cleaning: when the pigment needs to be replaced, the printing mechanism (6) is controlled to move to the right side and stop, then the valve on the water injection pipe (23) and a water pump connected with the valve are controlled to be opened, purified water is injected into the left space inside the mixing barrel (10) through the water injection pipe (23) to wash the inside of the mixing barrel, then water is sprayed out through the discharging nozzle (32), and the hose (31) and the discharging nozzle (32) are cleaned together;

step four, drying: after the cleaning is finished, all opened valves are closed, then the servo motor (12) is controlled to drive the mixing cylinder (10) to rotate 180 degrees, the cleaned cavity in the mixing cylinder (10) is transferred to the right side, at the moment, the left side can be added with materials again to be stirred and printed, the right small-sized air pump (15) is started, redundant heat which is emitted by the melting box (18) and stored in the heat insulation box (17) is discharged into the right cavity in the mixing cylinder (10) through the air inlet pipe (16) and the air guide pipe (13), the interior of the mixing cylinder is dried, finally, wet hot air is discharged through the air outlet nozzle (38), water flowing down in the mixing cylinder (10) flows into the water receiving box (28) to be absorbed by the water absorbing sponge (29), the water receiving box (28) is screwed down periodically, and the dry water absorbing sponge (29) can be replaced.