CN103222528B - 3D printing apparatus and feed system thereof - Google Patents
3D printing apparatus and feed system thereof Download PDFInfo
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- CN103222528B CN103222528B CN201310165946.9A CN201310165946A CN103222528B CN 103222528 B CN103222528 B CN 103222528B CN 201310165946 A CN201310165946 A CN 201310165946A CN 103222528 B CN103222528 B CN 103222528B
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Abstract
The invention provides a feed system of a 3D printing apparatus. The feed system is especially suitable for chocolate feeding, and two feed modes comprising a pneumatic mode and a piston mode can be selected by the system. The feed system comprises: a material storage tank; a heater arranged on the material storage tank to heat a material (8) in the material storage tank to the molten state; a gas jet cooler arranged at the material outlet (15) of the material storage tank to cool a printing model; and a material discharge driving device connected with the material storage tank to drive the molten material to be discharged from the material storage tank. The feed system of the 3D printing apparatus widens the application field of 3D printing. The invention also provides the 3D printing apparatus.
Description
Technical field
The present invention relates to 3D printing technique, particularly relate to a kind of 3D printing device and feed system thereof.
Background technology
Along with the fast development of printing technique, simple two-dimentional printing technique cannot meet the demand of people.In order to meet the demand of people, 3D printing technique is developed rapidly, and because 3D printing technique is a kind of three-dimensional printing technology, can print three dimensional practicality model.So be more and more subject to the welcome of manufacturer.
Please refer to accompanying drawing 1, this figure is a kind of principle schematic of 3D printing technique.As shown in the figure, in the process printed, printhead 01, by conputer controlled, under the drive of belt pulley, moves along x-axis or y-axis according to the model information that computer stores, and sprays a certain amount of printing material, and then successively draw figure.Workbench 02 is subject to conputer controlled, has often printed one deck, then move setpoint distance along z-axis according to predetermined direction.By the compound of above-mentioned motion, and then realize the printing of 3D product.
In the process that 3D prints, print material usually to discharge from discharging opening under the state of melting, discharging opening moves under computer control along with printhead, and then realize successively printing, but current existing feed system uses the filamentary materials such as such as ABS plastic silk, rely on gear clamping to push forward and realize melting and solidification, gear just cannot be adopted to clamp the way pushed forward for more crisp material (such as chocolate), and then the 3D that can not realize the easy crushing materials such as chocolate print.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of feed system of 3D printing device, print with the 3D realizing jelly after jelly or melting, the present invention can provide two kinds of feeding styles, vapour-pressure type and piston type, thus expands the application of 3D printed product.
For achieving the above object, the feed system of 3D printing device provided by the invention, comprises storage tank; Also comprise: storage tank; Also comprise:
Be arranged on described storage tank, to heat in described storage tank material to the heater of molten condition; Be arranged on the discharging opening of described storage tank with the air-blowing cooling device cooled printer model; And, be connected with described storage tank, with the discharge driving arrangement driving molten condition material in described storage tank to be discharged;
Described discharge driving arrangement is the intracavity inter-connection with described storage tank, to carry setting pressure material to extrude the gas transportation facilities of gas in described inner chamber;
Or described discharge driving arrangement is piston conveying equipment, described piston conveying equipment comprises:
Be arranged on the stepper motor in described storage tank;
Be connected with the drive end of described stepper motor, screw rod flexible under described drive end promotes;
Be arranged on described screw rod, and the feed ram of fitting with the inner wall sealing of described storage tank;
The electric machine controller controlling its work is connected with described stepper motor.
Preferably, in above-mentioned feed system, described gas transportation facilities comprises: the cylinder block be communicated with described storage tank, be sealed and matched with described cylinder block, and can in the vertical direction slide cylinder piston, be arranged at described cylinder block to connect the check valve of source of the gas and to be arranged at described cylinder piston to maintain the weight that in described cylinder block, gas pressure is constant.
Preferably, in above-mentioned feed system, described gas transportation facilities is air pump or high pressure air bottle.
Preferably, in above-mentioned feed system, in described storage tank, be provided with electric mixing device.
Preferably, in above-mentioned feed system, described heater comprises:
Detect the temperature sensor of storage tank temperature;
To the electrically heated rod that described storage tank heats; And
Be connected with electrically heated rod with described temperature sensor, be less than preset temperature value to control the electrically heated rod controller of described electrically heated rod startup according to its detected temperatures.
Preferably, in above-mentioned feed system, also comprise the heat-preservation cotton layer being arranged at described storage tank outer wall.
Preferably, in above-mentioned feed system, described air-blowing cooling device is the discharging opening side being arranged at described storage tank, the cooling tracheae be communicated with dry ice source or liquid nitrogen source.
Based on 3D printing device provided by the invention, present invention also offers a kind of 3D printing device, comprise installation frame and feed system, the storage tank of described feed system is arranged on described installation frame, and described feed system is the feed system as above described in any one.
The feed system of 3D printing device provided by the invention has the following advantages:
Heater heats the material in storage tank, until material is in molten condition, discharge driving arrangement (can be vapour-pressure type convey materials mode, also can be piston type convey materials mode) drive molten condition material in storage tank to be discharged, and then realize discharging, and then carry out 3D printing.Technical scheme material provided by the invention realizes melting by heating, and by realizing solidification after the cooling of air-blowing cooling device, achieving and printing the 3D of more crisp friable material, thus has expanded the application of 3D printing.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention, below the accompanying drawing used in embodiment or description of the prior art is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other embodiment diagram can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of principle schematic of 3D printing technique.
The structural representation of the feed system of the 3D printing device that Fig. 2 provides for the embodiment of the present invention;
The another kind of structural representation of the feed system of the 3D printing device that Fig. 3 provides for the embodiment of the present invention.
In Fig. 1-Fig. 3:
Printhead 01, workbench 02;
Snap joint 1, cover 2, tank body 3, heat-preservation cotton layer 4, installation frame 5, temperature sensor 6, electrically heated rod controller 7, material 8, electrically heated rod 9, cooling tracheae 10, check valve 11, cylinder block 12, weight 13, flexible pipe 14, discharging opening 15, cylinder piston 16, lift buckle 17, screw rod 18, stepper motor 19, feed ram 20, electric machine controller 21.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 2, the figure shows the feed system structure of the 3D printing device that the embodiment of the present invention provides.
Embodiments provide a kind of feed system of 3D printing device, comprise storage tank, heater, air-blowing cooling device and discharge driving arrangement, wherein:
Storage tank holds to print the utensil of material, and material 8, within it in chamber after melting, is extruded from its discharging opening 15, and then is realized printing by conputer controlled under the drive of printhead.
Heater, be arranged on storage tank, for heating material 8 to the molten condition in storage tank, heater can be electric heater unit, also can adopt heating furnace etc., heater can be considered according to aspects such as the kind of material 8 and concrete applied environment, production efficiencys.
Air-blowing cooling device, be arranged on the discharging opening 15 of storage tank, the printer model formed for the material 8 sprayed discharging opening 15 cools fast, certainly in the course of work of reality, refrigerating gas kind, the spouting velocity of refrigerating gas and the spray volume of refrigerating gas that air-blowing cooling device is used, all can determine according to the kind of the printing material of printer model to be cooled.
Discharge driving arrangement, is connected with storage tank, and to drive molten condition material in storage tank to be discharged, discharge driving arrangement drives the material of the molten condition in storage tank to discharge.
The feed system of the 3D printing device that the embodiment of the present invention provides has the following advantages: heater heats the material in storage tank, until material is in molten condition, discharge driving arrangement (can be vapour-pressure type convey materials mode, also can be piston type convey materials mode) drive molten condition material in storage tank to be discharged, and then realize discharging, and then carry out 3D printing.Technical scheme material provided by the invention realizes melting by heating, and by realizing solidification after the cooling of air-blowing cooling device, achieving and printing the 3D of more crisp friable material, thus has expanded the application of 3D printing.
In the discharge driving arrangement that the embodiment of the present invention provides, discharge driving arrangement can be various ways, as long as the material that can realize the molten condition in storage tank is discharged, concrete, please refer to accompanying drawing 2, discharge driving arrangement can be gas transportation facilities, the intracavity inter-connection of itself and storage tank, for carrying setting pressure material to extrude gas in the inner chamber of storage tank, general gas flow conveying equipment is by the intracavity inter-connection of pipeline and storage tank, the conveniently assembling of equipment, and improve the packaging efficiency of equipment, the two ends of pipeline are all connected with gas transportation facilities with storage tank respectively by snap joint 1.Certainly, in order to improve the flexibility that equipment is settled, above-mentioned pipeline is preferably flexible pipe 14.Concrete, stainless steel flexible hose, corrugated flexible hose, rubber hose etc. can be adopted.Concrete, also can be arranged on the magnetic valve between storage tank and gas transportation facilities on tracheae and be connected with described magnetic valve, to control the solenoid valve controller that gas break-make extruded by described tracheal strips material, the break-make that gas extruded by material can be realized.
Air transporting arrangement carries setting pressure gas in the inner chamber of storage tank in the course of the work, this partial gas pressure is constant, the effect of gas extruded by the material 8 of molten condition at setting pressure material under, be extruded from the discharging opening 15 of storage tank, material speed under the effect of setting pressure gas of molten condition is extruded from discharging opening 15 comparatively consistently, and then carry out 3D printing, not only achieve and the 3D of more crisp friable material is printed, thus expanded the application of 3D printing, under also realizing the effect of setting pressure gas, speed is extruded from discharging opening 15 comparatively consistently, realize discharging more equably, and then the quality of 3D printed product can be improved.
At material 8 by the process that heats, because material is from the solid-state liquid state becoming melting, unavoidably bubble is there is in liquid material, these bubbles final can be discharged by the material of discharging opening with melting, the quality of 3D printed product can be affected, for this reason, in the feed system that the embodiment of the present invention provides, the electric mixing device be arranged in storage tank is also comprised.
In the feed system that above-described embodiment provides, the effect of gas transportation facilities is to provide the setting pressure material material 8 under molten condition can extruded and extrudes gas, this gas transportation facilities can pass through implemented in many forms, and concrete can be air pump, high pressure air bottle or similar piston pump device; Directly can extrude from discharging opening 15 by screw rod motor pushing piston and then by the material of molten condition, screw rod motor also can the control of controlled by solenoid valve device, certain gas transportation facilities also can be other gas transportation facilities, embodiments provide a kind of concrete gas transportation facilities, described gas transportation facilities comprises cylinder block 12, cylinder piston 16, check valve 11 and weight 13.Wherein: the intracavity inter-connection of cylinder block 12 and storage tank, cylinder piston 16 and cylinder block 12 are sealed and matched, and can slide by the vertical direction, check valve 11 is arranged to connect source of the gas in cylinder block 12, and weight 13 is arranged on cylinder piston constant to maintain gas pressure in cylinder block 12.The pressure of gas regulates and can change according to the weight of weight 13.Because the weight of weight 13 is certain, so once after selected weight, the gas pressure in cylinder block 12 is constant, the speed also substantially constant that under the molten condition therefore in driving storage tank, material is extruded.When stopping feeding, directly weight 13 is removed.
Conveniently to the operation of cylinder piston 16, above-mentioned cylinder piston 16 end face is also provided with lift button 17.
Carry out heating to storage tank and can ensure that storage tank inner chamber has the temperature realizing printing material melts, being mentioned to the heater realized storage tank heating above has a variety of.Introduce the heater of a kind of concrete structure that the present embodiment provides below, this heater comprises temperature sensor 6, electrically heated rod 9 and electrically heated rod controller 7, wherein: temperature sensor 6 detects the temperature of storage tank, electrically heated rod controller 7 is connected with temperature sensor 6 and receives the detected temperatures of temperature sensor 6, electrically heated rod controller 7 is also connected with electrically heated rod 9, when being less than preset temperature value according to temperature sensor 6 detected temperatures value, control the electrically heated rod controller 7 that electrically heated rod 9 starts.It is constant that this kind of heater can realize storage tank temperature, as long as the temperature of storage tank is less than preset temperature value, then heat supplement is carried out in heating.
In order to reduce the more heat loss of storage tank, preferred scheme is, arranges heat-preservation cotton layer 4 at storage tank outer wall, and concrete can adopt heat-preservation cotton.
In order to optimize technique scheme further, the sidewall of storage tank is provided with the first holding tank, electrically heated rod 9 is arranged in the first holding tank, and this kind of set-up mode not only reduces scattering and disappearing of electrically heated rod 9 heat, also can save space simultaneously.As a same reason, can also arrange the second holding tank on the sidewall that storage tank is relative with the first holding tank, temperature sensor 6 is arranged in the second holding tank, and the first holding tank, the second holding tank are the holding tank of isolating with the bore seal of storage tank.Certain heater block can have multiple, the heating that also can realize storage tank outside choice for use heating watt parcel storage tank.
In the feed system that the embodiment of the present invention provides, the cover 2 that storage tank can comprise tank body 3 and be sealed and matched with it.Concrete, both can realize being tightly connected by arranging the sealing thread cooperatively interacted.Concrete hermetically-sealed construction can have multiple, and those skilled in the art can adopt the seal means of some routines to realize, and are not limited thereto.
Preferably, the air-blowing cooling device of the feed system that the embodiment of the present invention provides is the side being arranged at storage tank discharging opening 15, the cooling tracheae 10 be communicated with dry ice source or liquid nitrogen source.This kind is arranged at the convenient quick cooling to printer model of cooling tracheae of side.Certain cooling source can also adopt other kinds, might not be limited to dry ice source or liquid nitrogen source.
In addition, the embodiment of the present invention additionally provides a kind of discharge driving arrangement, please refer to accompanying drawing 3, discharge driving arrangement is piston conveying equipment, comprise stepper motor 19, screw rod 18, feed ram 20 and electric machine controller 21, wherein: stepper motor 19 is arranged in storage tank, screw rod 18 is connected with the drive end of stepper motor 19, under the promotion of drive end, lead-screw 18 stretches, feed ram 20 is arranged on screw rod 18, fits with the inner wall sealing of storage tank, and electric machine controller 21 is connected to control its work with stepper motor 19.In the concrete course of work, electric machine controller 21 control step motor 19 works, and stepper motor 19 drives screw rod 18 to stretch and then drives feed ram 20 to move in storage tank, and then discharges the material being in molten condition in storage tank.This kind of marker method realizes printing by the material that stepper motor 19 drives feed ram 20 to discharge molten condition, and discharge is stable, reliable.Concrete, stepper motor 19 can be arranged on the installation frame 5 of storage tank, and screw rod 18 promotes feed ram 20 and can realize moving back and forth, and the speed of stepper motor and direction control by electric machine controller 21.Certainly, the present patent application also by slowing down or the drive of accelerating gear realization to screw rod, and then can realize the screw rod fltting speed different to feed ram.
Based on the feed system of the 3D printing device that foregoing invention embodiment provides, the embodiment of the present invention additionally provides a kind of 3D printing device, comprise installation frame 5 and feed system, the storage tank of described feed system is arranged at installation frame 5, wherein, feed system is the feed system in above-described embodiment described in any one.
It should be noted that, the printing material that the feed system of the 3D printing device that the embodiment of the present invention provides is carried can be the material that conventional industrial products be applicable to printing, also some food material can be adopted, such as chocolate, when 3D printing device provided by the invention is used for food processing, change chocolate traditional mode made by mold pressing, realize personalized chocolate shape fabricating, and the conventional moulded can producing shape and structure complexity makes the personalization chocolate that cannot realize.In cake shop, Chocolate Production producer, 3D printed design hobby crowd can extensively be liked.Under constantly the weeding out the old and bring forth the new of 3D fan, various chocolate model vividly can be createed.The printing material of certain this patent can be extended to other mobility raw material.
It should be noted that, in this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
- The feed system of 1.3D printing device, comprises storage tank; It is characterized in that, also comprise:Be arranged on described storage tank, to heat in described storage tank material (8) to the heater of molten condition; Be arranged on the discharging opening (15) of described storage tank with the air-blowing cooling device cooled printer model; And, be connected with described storage tank, with the discharge driving arrangement driving molten condition material in described storage tank to be discharged;Described discharge driving arrangement is the intracavity inter-connection with described storage tank, to carry setting pressure material to extrude the gas transportation facilities of gas in described inner chamber;Or described discharge driving arrangement is piston conveying equipment, described piston conveying equipment comprises:Be arranged on the stepper motor (19) in described storage tank;Be connected with the drive end of described stepper motor (19), screw rod (18) flexible under described drive end promotes;Be arranged on described screw rod (18), and the feed ram (20) of fitting with the inner wall sealing of described storage tank;The electric machine controller (21) controlling its work is connected with described stepper motor (19).
- 2. feed system according to claim 1, it is characterized in that, described gas transportation facilities comprises: the cylinder block (12) be communicated with described storage tank, be sealed and matched with described cylinder block (12), and can in the vertical direction slide cylinder piston (16), be arranged at described cylinder block (12) to connect the check valve (11) of source of the gas and to be arranged at described cylinder piston (16) to maintain the constant weight (13) of described cylinder block (12) interior gas pressure.
- 3. feed system according to claim 2, is characterized in that, described gas transportation facilities is air pump or high pressure air bottle.
- 4. feed system according to claim 1, is characterized in that, is provided with electric mixing device in described storage tank.
- 5. according to the feed system in claim 1-4 described in any one, it is characterized in that, described heater comprises:Detect the temperature sensor (6) of storage tank temperature;To the electrically heated rod (9) that described storage tank heats; AndBe connected with electrically heated rod (9) with described temperature sensor (6), be less than according to its detected temperatures the electrically heated rod controller that preset temperature value starts to control described electrically heated rod (9).
- 6. feed system according to claim 5, is characterized in that, also comprises the heat-preservation cotton layer (4) being arranged at described storage tank outer wall.
- 7. according to the feed system in claim 1-4 described in any one, it is characterized in that, described air-blowing cooling device is discharging opening (15) side being arranged at described storage tank, the cooling tracheae (10) be communicated with dry ice source or liquid nitrogen source.
- 8.3D printing device, comprise installation frame (5) and feed system, the storage tank of described feed system is arranged on described installation frame (5), it is characterized in that, described feed system is for as the feed system in claim 1-7 as described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310165946.9A CN103222528B (en) | 2013-05-06 | 2013-05-06 | 3D printing apparatus and feed system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310165946.9A CN103222528B (en) | 2013-05-06 | 2013-05-06 | 3D printing apparatus and feed system thereof |
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| CN103222528A CN103222528A (en) | 2013-07-31 |
| CN103222528B true CN103222528B (en) | 2014-12-17 |
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| CN201310165946.9A Expired - Fee Related CN103222528B (en) | 2013-05-06 | 2013-05-06 | 3D printing apparatus and feed system thereof |
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