A kind of improved colored 3D printer
Technical field
The present invention relates to 3D printing technique field, especially a kind of improved colored 3D printer.
Background technique
3D printing is the raw material using molten condition, the control by high-pressure nozzle for material spray amount and material spray position,
It is successively sprayed on substrate, finally obtains a kind of rapid shaping technique of physical model.Common spraying raw material color is single,
It if necessary to make color model, needs while spraying basic material, using other spray heads to each layer for generating model
Carry out color spraying.This mode manufacturing speed is slow, and the device is complicated, at high cost.103753817 disclosure of Chinese invention patent CN
A kind of 3D printer head device, realizes the chromatic spray painting of single spray head.But the nozzle structure of this pre- colour mixture exists
It is not good enough for the mixed effect of pigment and print substrate during high-velocity spray, it is unable to reach the colouring essence of existing more nozzle systems
Exactness.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of improved colored 3D printers, are able to solve the prior art
Deficiency improves the colouring accuracy of single spraying head system.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of improved colored 3D printer, including rack are provided with spray head in rack, pigment preheating are provided in spray head
Room and mixing chamber are connected between pigment preheating chamber and mixing chamber by injection line, are equipped with solenoid valve, pigment in injection line
It is connected with pigment feed pipe and compressed air inlet pipe on preheating chamber, print substrate feed pipe and exhaust are connected on mixing chamber
It manages, agitator is installed in mixing chamber, agitator bottom is connected with discharge nozzle, and the outlet of injection line is located inside agitator,
The top side wall of agitator is evenly arranged with the first blade, and the sidewall bottom of agitator is evenly arranged with the second blade, works as stirring
Bucket rotation when, the first blade by mixture from the outer side of agitator to the inside of agitator drive, the second blade by mixture from
The outside of the interior lateral agitator of agitator drives.
Preferably, being provided with toroidal cavity, the bottom of toroidal cavity and mixing chamber on the outside of the outlet of the injection line
It is connected, several through slots is provided between toroidal cavity and injection line;Curved baffle, arc are provided at the top of discharge nozzle
Baffle and discharge nozzle clearance fit.
Preferably, being connected with pyramid blocks, the tip of pyramid blocks by bracket on the inside of the outlet of the injection line
Towards the inside of injection line, the inner wall of injection line is provided with sliding slot, and bracket is connected in sliding slot.
Preferably, first blade surface is provided with spiral groove.
Preferably, the spiral groove side wall is provided with several through-holes, the interface of through-hole and the first blade surface
It is provided with flat mouth, flat mouth is interior to be connected with several deflectors by rotary shaft, and rotary shaft is positioned by lock-nut.
Preferably, the both ends of second blade are connect by torsional spring with agitator.
Preferably, being provided with the first friction plate, the second friction plate for selecting a contact with the second blade on the agitator
With third friction plate, as the opening angle of the second blade and agitator gradually increases, the second blade successively with the first friction plate,
Second friction plate and third friction plate are in contact, and the first friction plate, the second friction plate and third friction plate rub with the second blade
Coefficient is wiped to be sequentially reduced.
Brought beneficial effect is by adopting the above technical scheme: the present invention utilizes between pigment preheating chamber and mixing chamber
Pressure difference, the pigment preheated in pigment preheating chamber is sprayed to mixing chamber, realize pigment mixed with the preliminary of print substrate.Benefit
With the quick folding of solenoid valve, the gradation injection of pigment may be implemented.Then it by the rotation of agitator, is realized in mixing chamber
Pigment and print substrate are sufficiently mixed.By the way that toroidal cavity is arranged, range of scatter when pigment sprays, taper gear can be improved
Block can improve the amount that pigment enters toroidal cavity by reflecting to the fluid of injection.By adjusting the position of pyramid blocks
It sets, the amount of pigment for entering toroidal cavity can further be adjusted.The spiral groove of first blade surface can be effective
The stirring for improving fluid drives effect, and the second blade is realized by torsional spring and is flexibly connected, and by rubbing with the first friction plate, second
The contact of pad and third friction plate realizes that stirring angle with the variation of stirring resistance, improves pigment and print substrate in agitator
Mixed effect.
Detailed description of the invention
Fig. 1 is the structure chart of a specific embodiment of the invention.
Fig. 2 is the structure chart of injection line in a specific embodiment of the invention.
Fig. 3 is the structure chart of the first blade in a specific embodiment of the invention.
Fig. 4 is the structure chart of spiral groove in a specific embodiment of the invention.
Fig. 5 is the structure chart of the second blade connecting portion in a specific embodiment of the invention.
In figure: 1, rack;2, spray head;3, pigment preheating chamber;4, mixing chamber;5, injection line;6, solenoid valve;7, pigment into
Expects pipe;8, compressed air inlet pipe;9, print substrate feed pipe;10, exhaust pipe;11, agitator;12, the first blade;13,
Two blades;14, toroidal cavity;15, through slot;16, curved baffle;17, bracket;18, pyramid blocks;19, sliding slot;20, spiral is recessed
Slot;21, through-hole;22, flat mouth;23, rotary shaft;24, deflector;25, lock-nut;26, torsional spring;27, the first friction plate;28,
Second friction plate;29, third friction plate;30, oven wire mesh blanket;31, discharge nozzle.
Specific embodiment
The standardized element used in the present invention can commercially, and shaped piece is according to specification and attached drawing
Record can carry out customized, and the specific connection type of each part is all made of in the prior art mature bolt, rivet, weldering
The conventional means such as connect, paste, this will not be detailed here.
Referring to Fig.1-5, a specific embodiment of the invention includes rack 1, is provided with spray head 2 in rack 1, in spray head 2
It is provided with pigment preheating chamber 3 and mixing chamber 4, is connected between pigment preheating chamber 3 and mixing chamber 4 by injection line 5, injection line
Solenoid valve 6 is installed on 5, pigment feed pipe 7 and compressed air inlet pipe 8 are connected on pigment preheating chamber 3, is connected on mixing chamber 4
It is connected to print substrate feed pipe 9 and exhaust pipe 10, agitator 11 is installed in mixing chamber 4,11 bottom of agitator is connected with discharging
The outlet of pipe 31, injection line 5 is located inside agitator 11, and the top side wall of agitator 11 is evenly arranged with the first blade 12,
The sidewall bottom of agitator 11 is evenly arranged with the second blade 13, and when agitator 11 rotates, (agitator 11 passes through motor driven
Rotation, motor are not shown in the figure), the first blade 12 drives mixture from the outer side of agitator 11 to the inside of agitator 11,
Second blade 13 drives mixture from the interior side of agitator 11 to the outside of agitator 11.It is set on the outside of the outlet of injection line 5
It is equipped with toroidal cavity 14, the bottom of toroidal cavity 14 is connected with mixing chamber 4, is arranged between toroidal cavity 14 and injection line 5
There are several through slots 15;The top of discharge nozzle 31 is provided with curved baffle 16, curved baffle 16 and 31 clearance fit of discharge nozzle.Spray
It penetrates on the inside of the outlet of pipeline 5 and pyramid blocks 18 is connected with by bracket 17, the tips of pyramid blocks 18 is towards in injection line 5
Portion, the inner wall of injection line 5 are provided with sliding slot 19, and bracket 17 is connected in sliding slot 19.First blade, 12 surface is provided with spiral
Groove 20.20 side wall of spiral groove is provided with several through-holes 21, and through-hole 21 and the interface on 12 surface of the first blade are provided with
Flat mouth 22, flat mouth 22 is interior to be connected with several deflectors 24 by rotary shaft 23, and rotary shaft 23 is determined by lock-nut 25
Position.The both ends of second blade 13 are connect by torsional spring 26 with agitator 11.It is provided on agitator 11 and selects one with the second blade 13
The first friction plate 27, the second friction plate 28 and the third friction plate 29 of contact, with the opening of the second blade 13 and agitator 11
Angle gradually increases, and the second blade 13 is successively in contact with the first friction plate 27, the second friction plate 28 and third friction plate 29, the
One friction plate 27, the second friction plate 28 and third friction plate 29 and the coefficient of friction of the second blade 13 are sequentially reduced.
Oven wire mesh blanket 30 is provided in toroidal cavity 14, oven wire mesh blanket 30 can slow down pigment and flow from toroidal cavity 14
Speed out, so that there is the position for continuing to add pigment into agitator 11 in the outside of injection line 5, to avoid
The problem of pigment distribution unevenness caused by the disposable addition of pigment.
The quick mixing of pigment in single spraying head system may be implemented in the present invention, improves the colouring of single nozzle 3D colour print
Quality.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.