CN105690769A

CN105690769A - Mixed full-color 3D printing system

Info

Publication number: CN105690769A
Application number: CN201610155439.0A
Authority: CN
Inventors: 马强
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2016-06-22

Abstract

The invention discloses a mixed full-color 3D printer which is small, light, high in precision and low in cost so as to meet the requirement of common customers for full-color 3D printing. A mixed full-color 3D system comprises a support, material plates, consumables, a stepping motor, electromagnetic valves and a fusion system. The system is characterized in that the consumables are primary color wires and are wound on the material plates, the material plates are hollow cylinders, and the material plates in multiple colors are arranged on the support in parallel; the material plates rotate with the support as the center axis due to traction force of the consumables wound on the material plates; a program drives the stepping motor to be matched with the electromagnetic valves to control the consumables to enter the fusion system as required, and materials in required colors are precisely matched. The whole 3D printing system is novel in design; compared with traditional 3D printing, the mixed full-color 3D printing system enables the 3D printing technology to be improved from single-color printing to color 3D printing in 16,000,000 colors; all design is achieved in one set of system composed of an extrusion motor, a heating module and a nozzle, cost and the size of the whole printer are effectively controlled, and meanwhile printing precision is improved.

Description

Mixing type full color 3D print system

Technical field

The present invention relates to 3D and prints field, particularly relates to a kind of melted increasing material type full color 3D printer。

Background technology

3D prints, and is a kind of rapid shaping technique, generally use can jointing material, carried out the technology of constructed object by the mode successively printed。Wherein melt extrude molding (FDM) and be used mostly ABS, PLA as consumptive material with thread feed。Consumptive material is heated fusing in shower nozzle。Shower nozzle is along part section profile and fills orbiting motion, simultaneously will the material extrusion of fusing, material rapid solidification, and boning with the material of surrounding。Each synusia is to pile up to form on last layer, and current layer is played location and the effect supported by last layer。It is then by respectively laying a stepper motor in tri-dimensions of XYZ in 3D printer structure, by the layered position of mathematical model, computer software determines that each needs the point printed, carry out the corresponding Collaboration controlling above-mentioned 3 motors, it is achieved thereby that the three-dimensional contouring on three-dimensional。

Traditional melt extrude type 3D printer and can only print solid color。In order to meet consumer's demand to colour print, currently also there are some to pass through multiple extrusion system and multiple nozzle are installed simultaneously, realized the combination of multiple independent color lump by respective intermittent work, form a kind of pseudo-3D。Do so not only color effect is undesirable, and multiple nozzle collaborative works also lead to printing precision and are difficult to control。The more important thing is that complete machine can take very big space, cause cannot be introduced into huge numbers of families。And the increase that cost is at double, ordinary consumer cannot be born at all。

Summary of the invention

For the problems referred to above, the present invention proposes the solution that a kind of small volume and less weight, high accuracy and full color 3D with low cost print, and the full color 3D to meet ordinary consumer prints demand。

The technical scheme is that the cooperation utilizing 4 electromagnetic valves and a step-by-step movement extruder motor, control RGB three primary colors simultaneously and add the extrusion proportioning that black has the supplied materials of 4 kinds of colors altogether, merge the material there is a need to color at same fusing system follow procedure and extrude, realizing 16,000,000 color full color 3D prints with this。

We can be defined as R(0-255 at known each color except black), G(0-255) .B(0-255) the proportioning of numerical value obtain, namely utilize our each pixel of this principle can be obtained 256*256*256 by the proportioning of three kinds of colors of RGB is any one in 16777216 kinds of colors, namely so-called 1600W color。It is embodied as follows: the concrete numerical value of the mathematical model of any colour reads in each section more in a specific sequence RGB on each point after being cut into slices by software, obtain (the R/256 corresponding to each pixel, G/256, B/256) fractional value, again this fractional value is converted into etc. the electric current of numerical value, it is respectively allocated to wherein three electromagnetic valves of correspondence, owing to three kinds of colors of RGB can not join black, so needing individually to control black consumptive material with an electromagnetic valve。And the numerical value of fractional value corresponding to black and RGB has relation, and so that 256*3-(R+G+B) }/256*3。

In the technical program, each consumptive material is fixed on a driven pulley and drives in the middle of gear。Motor drives real-time the rotating clockwise or counter-clockwise thus producing the power risen or decline in real time of gear according to programme-control, controls the moving forward and backward of driven pulley in 4 directions respectively with 4 electromagnetic valves。Just by consumptive material close-fitting to driving gear, can now drive the rotation of gear just can control charging and the discharging of consumptive material when driven pulley advances。Contrary to driven pulley retreats, consumptive material will depart from driving gear thus stopping the turnover of consumptive material。

In a preferred embodiment, described motor is placed straight down, and described motor is fixed in described driving direct geared, so that power output is more accurate。Described driving gear is frustoconical bevel transverse gear, and direction is vertical with consumptive material, the active force of similar flange。The transverse rotation of gear is controlled the lengthwise movement of consumptive material。Owing to described driving gear is frustoconical bevel so that vertical consumptive material finally all can converge at a point of nozzle from all directions。

In a preferred embodiment, described electromagnetic valve is distributed in orthohexagonal on 4 directions of back, and consumptive material charging tray is hung on rear, complete machine top side by side so that thread consumptive material is vertically to nozzle as far as possible, to facilitate charging。Described motor is placed in electromagnetic valve and goes up position。Described electromagnetic valve is by electric magnet and coil two large divisions, and when coil electricity promotes electric magnet downward, electric magnet promotes consumptive material to driving gear close-fitting, so that drive the power of gear to can act on consumptive material。

The invention has the beneficial effects as follows: whole 3D printhead system is novel in design, compared with printing with tradition 3D, enable to 3D printing technique and print the colored 3D printing rising to 16,000,000 colors from monochrome, all of technology realizes in a set of extruder motor and heating module and nozzle system, it is effectively controlled cost and machine volume, improves printing precision simultaneously。

Accompanying drawing explanation

Fig. 1 is the total schematic diagram of system structure described in the embodiment of the present invention；

Fig. 2 is the structural representation of electromagnetic valve in the embodiment of the present invention；

Fig. 3 is fusing system schematic diagram in the embodiment of the present invention；

Fig. 4 is the location fix figure of extruder motor and electromagnetic valve in the embodiment of the present invention；

Description of reference numerals:

10-charging tray support, 20-charging tray, 30-consumptive material, 40-motor, 50-drives gear, 60-electromagnetic valve, 601-driven pulley, 602-axle, 603-electromagnet stent, 604-electromagnetic valve housing, 605-coil, 606-electric magnet, 70-fusing system, 701-trunnion, 702-adds heat pipe, 703-critesistor, 704-melts cavity, 80-nozzle。

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiments of the invention are described in detail。

Embodiment:

As it is shown in figure 1, the present invention includes charging tray support 10, charging tray 20, consumptive material 30, described consumptive material 30 is wound on charging tray 20 for uniformly thread, respectively red, green, blueness and black, utilize the data of RGB color value, is controlled motor and the collaborative operating of electromagnetic valve in real time by program。Due to motor 40 only one of which, it is necessary to accurately control the black four kinds of supplied materials of RGB simultaneously。The just cooperation of only reliable electromagnetic valve 60, the electric current that program converts the described fractional value obtained in real time distributes to 4 electromagnetic valves 60 of correspondence in real time, and electromagnetic valve 60 controls the time of consumptive material close-fitting according to the current values obtained。Simultaneously on-demand to enter into fusing system 70 internal thus reaching accurately to control in real time 4 color supplied materials to coordinate the accurately operating driving gear 50 controlled by motor 40。That the consumptive material of 4 kinds of colors finally goes out the color that needs in the internal proportioning of fusing system 70 and extruded by nozzle 80。

As shown in Figure 2, described driving gear 50 is fixed on the central shaft of described motor 40, motor 40 can be precisely controlled driving real-time the rotating clockwise or counterclockwise of gear 50 according to the electric current that program exports in real time, described driving gear 50 is the transverse gear of frustro-pyramidal, direction is vertical with consumptive material 30, the active force of similar flange。The transverse rotation of gear is controlled the lengthwise movement of consumptive material。Owing to described driving gear is frustoconical bevel so that vertical consumptive material finally all can converge at a point within fusing system 70 from all directions。The fractional value that program obtains by reading mathematical model is converted into corresponding electric current and is transferred to coil 605, produce corresponding electromagnetic force to promote electric magnet 606 to stretch out electromagnetic valve housing 604. driven pulley 601 be a kind of roller with U-type groove, consumptive material 30 is just stuck in U-type groove, in order to increase direction stationarity and the stress of consumptive material 30, the present invention placed two driven pulleys 601 side by side, it is fixed on electromagnet stent 603 by axle 602, described electric magnet 606 drives consumptive material 30 close-fitting in driven pulley 601U type groove to driving on gear 50 when stretching out electromagnetic valve housing 604, gear is now driven just to may act on consumptive material 30 by rotating the power obtained, consumptive material 30 will number as desired enter in fusing system 70 in real time accurately。Contrary, when the fractional value that the current drain that the fractional value that program reads converts is complete or program reads is 0, the thrust that coil 605 will no longer produce electric magnet 606, corresponding consumptive material will be tight with on driving gear 50, even if now driving gear 50 still rotating, but power really cannot act on corresponding consumptive material 30, corresponding consumptive material 30 will stop entering in fusing system 70, but does not affect the input and output material of other consumptive materials 30 corresponding to electromagnetic valve 60。Reach same motor 40 with this and accurately control the purpose of 4 kinds of consumptive material 30 input and output materials simultaneously respectively。

It is illustrated in figure 3 whole fusing system, including trunnion 701, adds heat pipe 702, critesistor 703, melted cavity 704 and shower nozzle 80。Wherein, program continues to export electric current to adding heat pipe 702 so that adding the temperature that heat pipe reaches to preset, be the fusing point of consumptive material 30, temperature can arrange in consumptive material according to the fusing point of obstructed consumptive material and change。Melted cavity 704 is designed to circle by the present invention, 4 trunnions 701 and critesistor 703 are distributed in round surrounding, add heat pipe 702 and be placed in round center, such design is conducive to the thermally equivalent of whole melted cavity 704, the temperature of the melted cavity 704 of critesistor 703 monitor in real time, in order to program is precisely controlled the caloric value adding heat pipe 702。Melted cavity 704 is that the high aluminum profile extrusion of thermal conductivity forms。4 kinds of consumptive materials 30 enter the melted cavity 704 of taper by trunnion 701 according to quantity respectively and finally converge to a point, adding the whole melted cavity 704 of heat pipe 702 and be heated to the fusing point of consumptive material 30, the consumptive material 30 of 4 kinds of colors proportioning as required is melt into the material of the pre-color of liquid at point at this。And by nozzle 80, final material become filament extrusion。

Fig. 4 is the location fix figure of extruder motor and electromagnetic valve, and in order to four kinds of consumptive materials 30 can converge at fusing system 70 inside more smoothly, described four electromagnetic valves 60 should be distributed in orthohexagonal 4 limits rearward centered by motor 40。The orientation of above-mentioned design coordinates the taper driving gear that the consumptive material 30 in three-dimensional position finally can be converged at a bit smoothly, thus advantageously in the proportioning of consumptive material 30 and melted。

Embodiment described above only have expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention。It should be noted that; designer for this area; without departing from the inventive concept of the premise; some deformation and improvement can also be made; such as RGB+ black can become the proportioning of CMYK+ white or other colours; or with the effect of other mode replacement of solenoid valve, and the change of other shapes or location fix etc., these broadly fall into protection scope of the present invention。

Claims

1. the 3D print system of a printable full color, including support, charging tray, consumptive material, motor, electromagnetic valve, fusing system, it is characterized in that: described consumptive material is that primary colors is thread is wound in charging tray, described charging tray is hollow cylindrical, polychrome charging tray is placed on described support side by side, described charging tray is subject to the pull strength of consumptive material wound on it and can rotate by axle centered by described support, and the control on-demand entrance of the described consumptive material accurate proportioning of described fusing system that coordinates of motor described in driven by program and electromagnetic valve goes out the material of required color。

2. full color 3D print system according to claim 1, described electromagnetic valve includes coil, electric magnet, driven pulley, it is characterized in that: the plurality of electromagnetic valve is distributed in around described motor, described each electromagnetic valve correspondence controls a kind of primary colors consumptive material, coordinate with described motor, real-time and precise controls the motion of described consumptive material, and can described electric magnet be driven driven pulley to advance by the thrust of coil and retreats, thus controlling the active force from described motor act on described consumptive material。

3. full color 3D print system according to claim 1, described fusing system includes melted cavity, trunnion, adds heat pipe, critesistor and nozzle, it is characterized in that: described multiple consumptive material is entered by the described described melted inside cavity adding heat pipes heat by described trunnion according to quantity, be melted proportioning simultaneously and go out the material of the color needed and by described nozzle extrusion filament。