CN201272015Y - Miniature extrusion system for melting fused deposition rapid moulding - Google Patents
Miniature extrusion system for melting fused deposition rapid moulding Download PDFInfo
- Publication number
- CN201272015Y CN201272015Y CNU2008200518006U CN200820051800U CN201272015Y CN 201272015 Y CN201272015 Y CN 201272015Y CN U2008200518006 U CNU2008200518006 U CN U2008200518006U CN 200820051800 U CN200820051800 U CN 200820051800U CN 201272015 Y CN201272015 Y CN 201272015Y
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- Prior art keywords
- nozzle
- screw
- fused deposition
- extrusion system
- rapid shaping
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Abstract
The utility model discloses a micro extrusion system used for rapid fused deposition molding. which comprises a pedestal and two spray-heads arranged on the pedestal; at least one spray-head comprises a screw, a plunger piston charging barrel, a screw charging barrel and a nozzle; the screw is arranged on a bearing hole on the pedestal; heating elements are arranged on the plunger piston charging barrel and the screw charging barrel; a nozzle is arranged at the front end of the screw charging barrel; a wire feeding device faces to the back end of the plunger piston charging barrel; both the wire feeding device and the screw are all driven by a drive mechanism. The system can use a lower wire feeding thrust to feed wire materials into the charging barrel simultaneously when ensuring the wire materials to be continuously and stably fed and plasticized, and can realize the pressurizing extrusion on the fused mass by a micro bolt; a working spray head and a non-working spray head can automatically realize lifting conversion, thus leading the double spray heads to work stably and reliably, thereby greatly reducing the complex degree after the processing of quick molding and improving the surface quality of products.
Description
Technical field
The utility model patent relates to a kind of extrusion system that is used for the fused deposition rapid shaping.
Background technology
At present, the raw material that is used for the fused deposition quick shaping process is mainly plastics silk material (diameter is about 1.8mm), promptly adopts silk material feeding manner.The fused deposition quick shaping process need add support when making cantilever part.Support can be built with commaterial, and only need a shower nozzle this moment, promptly in forming process, can control the speed of service of shower nozzle by control system, makes that supporting the material part becomes comparatively loose, thereby reaches the purpose of being convenient to peel off and accelerate shaping speed.But adopt single shower nozzle to have following shortcoming, that is: because cast material and backing material all are commaterials, and color is identical, even the density difference is difficult to recognize and be difficult to peel off at boundary; In addition, when backing material is peeled off, easily profiled member is caused damage.
Summary of the invention
The miniature extrusion system that the purpose of this utility model is to provide a kind of rapid shaping that to be applicable to two kinds of silk material be raw material to use, this miniature extrusion system can make cast material and backing material be easy to peel off, and melt is extruded continuously steadily.
The technical scheme that the utility model patent is adopted is:
A kind of miniature extrusion system that is used for the fused deposition rapid shaping, this system comprises pedestal and is located at shower nozzle on the pedestal that described shower nozzle is two.One of them described shower nozzle comprises screw rod, plunger type barrel, screw barrel and nozzle, and screw rod is installed on the dead eye of pedestal, is provided with heating element heater on plunger type barrel and screw barrel; Be provided with nozzle at screw barrel front end; Wire feeder is towards the rear end of plunger type barrel; Wire feeder and screw rod are by drive mechanism.
First is used for the extrusion molding material two sprays of this system, and one is used to extrude backing material.The shower nozzle that is melt extruding material is called the work shower nozzle, otherwise the shower nozzle of extruded material does not claim the inoperative shower nozzle.Its course of work is that the feed mechanism of work shower nozzle correspondence is at first expected silk that as moulding silk material, be sent to a plunger type barrel, because the plunger type barrel has heating element heater outward, its heating-up temperature is gathered and controlled by temperature sensor.The silk material of sending into is become melt state by high temperature melt, and the piston progradation of the silk material by not plasticizing itself makes the silk material melt of plasticizing enter the screw barrel, passes through the screw rod turning effort again, extruding from nozzle of melt continous-stable.Melt extrusion pressure and flow can be controlled by motor speed.When using another material instead, during as the supporting wire material, can realize by the conversion work shower nozzle, repeat thawing extrusion recited above equally and can finish.
The beneficial effect of the utility model patent is: can adopt the silk material of two kinds of different in kinds to carry out rapid shaping, one is used for fused deposition cast material finished parts, and another is used for the fused deposition backing material.Utilize two kinds of properties of materials differences, make and to adopt the method for physics or chemistry to remove support after finishing.This system architecture compactness, guarantee the silk material can the continous-stable charging with plasticizing in, can the silk material be sent into barrel with lower wire feed thrust, and can extrude the supercharging of melt by miniature screw rod realization.
Further improvement of the utility model is:
Described nozzle is that glade plane space cooperates with the front end of described screw cylinder.Make described nozzle can realize sliding relatively with described screw cylinder.Be provided with rotating shaft on described pedestal, connect lever and be located on the described pedestal by this rotating shaft activity, described two nozzle both sides are provided with positive stop lug boss, and this positive stop lug boss flexibly connects with the described boss that is provided with on the lever that is connected.Owing to connect the connection effect of lever, can utilize the screw rod of work shower nozzle to extrude the automatic lifting conversion that supercharging realizes main jet and inoperative nozzle, promptly two nozzles work alone respectively, another nozzle lifts automatically when a nozzle operation, avoid the nozzle of inoperative shower nozzle that working sections is produced interference, the nozzle of also avoiding the inoperative shower nozzle influences the surface of shaped parts quality because of the material that touching has applied forms wire drawing.Like this, make that the working stability of system is reliable, reduce the complexity of rapid shaping post processing greatly and improve surface quality of products.Because the heat transfer effect of lever can also realize that heat energy is shared, reduces energy consumption.
Perhaps be provided with deep groove ball bearing on described dead eye, described screw rod is installed on the described dead eye by this deep groove ball bearing.In order to screw rod is carried out radial location accurately, avoid occurring the situation that screw rod scrapes material tube inner wall.
Perhaps described dead eye is a stepped hole, is provided with thrust ball bearing on this stepped hole, and described screw rod is installed on the described dead eye and by this thrust ball bearing by this thrust ball bearing and pushes to described nozzle direction.When extruding, (be generally 0.1～1.0mm), the powerful reaction force that melt produced in the nozzle because the nozzle bore diameter is very little to bear screw rod.
Perhaps upwards have 360 ° endless groove in described screw rod week, described screw barrel cooperates with described screw rod and forms the spiral extrusion manifold betwixt, and the rear end of this spiral extrusion manifold communicates by the front end of this endless groove with the plunger type barrel.This is in order to make molten plastic can guarantee that when the plunger type barrel enters the screw barrel molten plastic can not interfered by the spiral shell rib.
Perhaps between described dead eye and/or wire feeder and described heating member, thermal insulation board is set, adopt thermal insulation board to carry out heat insulation, dry in the space that does not need to heat more than thermal insulation board, can guarantee that silk material can keep certain rigidity before entering the plunger type barrel, and guarantee that bearing can at high temperature not burnt or stuck.
Description of drawings
Below in conjunction with drawings and Examples the utility model patent is further specified.
Fig. 1 is a kind of structural representation that is used for the miniature extrusion system of fused deposition rapid shaping;
Fig. 2 is the side view of this system;
Fig. 3 is among Fig. 2, and A is to partial view;
Fig. 4 is the B-B cutaway view of Fig. 3;
Description of reference numerals:
1. base plate; 2. nozzle; 3. check ring; 4. spring heater; 5. positioning sleeve; 6. pedestal; 7. spring heater; 8. barrel; 9. bearing positioning sleeve; 10. deep groove ball bearing; 11. spring heater; 12. thrust ball bearing; 13. thermal insulation board; 14. screw rod; 15. driven gear spacer; 16. motor; 17. driven gear; 18. driving gear; 19. lever; 20. rotating shaft; 100. screw barrel; 200. plunger type barrel; 300,301. wire feeders; 400,401. material; 500,501. nozzle positive stop lug boss; 600,601. lever boss.
The specific embodiment
As shown in Figure 1, 2, a kind of miniature extrusion system that is used for the fused deposition rapid shaping, this system comprises that pedestal reaches
Be located at the shower nozzle on the pedestal, described shower nozzle is two, comprises screw rod 14, plunger type barrel 200, screw barrel 100 and nozzle 2, and screw rod 14 is installed on the dead eye of pedestal 6, be provided with heating element heater on plunger type barrel 200 and screw barrel 100, promptly the spring heater 4,7 and 11; Each heating element heater is separate, and its heating-up temperature is gathered and controlled by temperature sensor.Be provided with nozzle 2 at screw barrel 100 front ends; Wire feeder 300 is towards the rear end of plunger type barrel 200.
Wherein, screw barrel 100 is fixed on the pedestal 6 by positioning sleeve 5, and screw rod 14 by driven gear 17, driving gear 18 and motor 16 in succession.The length of screw cylinder and screw rod can change its length according to the performance of silk material, with the thermal history that guarantees melt within tolerance band.Also use a pair of deep groove ball bearing 10, screw rod 14 is carried out radial location, and be provided with a thrust ball bearing 12.Also have 360 ° endless groove in addition on screw rod, this endless groove communicates with the plunger type barrel.Adopted carry out between 13 pairs of described dead eyes of thermal insulation board and wire feeder and the described heating member heat insulation.
In the present embodiment, nozzle 2 is that glade plane space cooperates with the front end of screw cylinder 100.Make described nozzle 2 can realize sliding relatively with described screw cylinder 100.Be provided with rotating shaft 20 on described base plate 1, lever 19 is located on the described base plate 1 by this rotating shaft 20, and described two nozzles 2 are connected with the two ends of this lever 19.Wherein, described nozzle 2 is provided with positive stop lug boss 500 and 501 respectively at both sides, and this positive stop lug boss 500,501 flexibly connects with described lever 19 two ends lever boss 600,601 respectively.Can utilize the screw rod 14 of work shower nozzle to extrude the automatic lifting conversion that supercharging realizes main jet and inoperative nozzle like this, promptly two nozzles work alone respectively, and another nozzle lifts automatically when a nozzle operation.Can avoid the inoperative nozzle because of the material that touching has applied forms wire drawing, influence the surface of shaped parts quality.Lever 19 can make the nozzle of the thermal energy transfer of the nozzle of work shower nozzle to the inoperative shower nozzle the interior melting charge of nozzle of inoperative shower nozzle also can obtain certain heat energy in addition, can reduce both temperature differences.In the duty of two shower nozzles of needs conversion, preheating time can be reduced.
When shower nozzle was worked, the shower nozzle of supposing accompanying drawing 1 left side was the work shower nozzle, and under the driving of driving mechanism, wire feeder 300 is sent silk material 400 into the plunger type barrel; Silk material 400 becomes molten condition via outer spring heater 7,11 heating of plunger type barrel.The silk material continues to advance, and does not have the part of fusion to play the effect that is equivalent to plunger, and melting charge is clamp-oned screw barrel 100.This screw barrel 100 is independent temperature controls, and the spring heater 4 that the screw barrel is outer provides to keep plastics to be in the required heat of molten condition.Motor 16 drives screw rod 14 rotations by driving gear 18, driven gear 17, and what screw rod 14 played is the effect of melt conveying and supercharging, at last the molten plastic that enters screw barrel part is extruded from nozzle 2.The silk material 401 of the inoperative shower nozzle of this moment is not pushed into, and the wire feeder 301 of inoperative shower nozzle correspondence is not driven.
In the work shower nozzle, the molten plastic supercharging under the effect of screw rod 14 that enters screw barrel 100, because screw cylinder 100 is connected and fixed by positioning sleeve 5 with pedestal 6, melt pressure can make nozzle 2 slide straight down.The motor of inoperative shower nozzle is suitably counter-rotating simultaneously, with the pressure of the melting charge pumpback part in this nozzle with melt in the nozzle in the reduction inoperative shower nozzle.Shown in Fig. 3,4, nozzle positive stop lug boss frame is on the lever boss, the nozzle positive stop lug boss 500 of left side work shower nozzle is lever boss 600 past pressing down, melt pressure reduces in the nozzle of inoperative shower nozzle, the pressure of 501 pairs of lever boss 601 of the positive stop lug boss pressure more suffered than lever boss 600 is little, and the nozzle of inoperative shower nozzle is by lever 19 liftings.Because the nozzle of work shower nozzle withstands on the base plate 1 under pressure promotes and is positioned, the nozzle of inoperative shower nozzle has also been located by lever 19, has so just realized the automatic lifting of shower nozzle.
Because it is heat insulation to have adopted thermal insulation board 13 to carry out, the space of thermal insulation board more than 13 dried make the cooling of bearing, motor, make temperature remain on below 70 ℃, can also add the enclosure, make this space realize the closed loop temperature control, guarantee that the silk material can keep certain rigidity before entering the plunger type barrel, and guarantee that bearing can at high temperature not burnt or stuck.In order to shorten the preheating time of two shower nozzle conversion work states, the heating element heater of inoperative shower nozzle also needs to keep the heat energy that provides certain.Since at thermal insulation board 13 with the lower area wind that is not cooled, though the barrel bringing-up section of work shower nozzle is to the not contact of barrel bringing-up section of inoperative shower nozzle, but have certain heat radiation, two other shower nozzle is fixed by same positioning sleeve, and positioning sleeve also plays the effect that strengthens area of dissipation; Therefore can suitably reduce the spring heater 4 of inoperative shower nozzle screw barrel required add heat;
When the duty of two shower nozzles of needs conversion, can move to specific zone to system, the spring heater of work shower nozzle begins energising and heats up, and the spring heater of inoperative shower nozzle begins cooling and keeps thermostatic control.Wait to extrude and just can move to the work of model boundary layer after stable, shower nozzle can move along the model cross-sectional layers according to minute layer parameter, control the volume flow of melt simultaneously, melt extrusion pressure and flow can be controlled by motor speed, realize the technology of fused deposition rapid shaping.
The utility model adopts two shower nozzles independently to heat in terms of existing technologies, can realize using the silk material of two kinds of different in kinds, finishes the rapid shaping part.One is used for jet mould section bar material finished parts, and another is used for spraying backing material.This system guarantee the silk material can the continous-stable charging with plasticizing in, can the silk material be sent into barrel with lower wire feed thrust, and can extrude the supercharging of melt by miniature screw rod realization; The work shower nozzle can be realized the lifting conversion automatically with the inoperative shower nozzle, makes that the working stability of two shower nozzles is reliable, reduces the complexity of rapid shaping post processing greatly and improves surface quality of products.
Present embodiment has two shower nozzles, and one is used for jet mould section bar material finished parts, and another is used for spraying backing material, and the shower nozzle more than three or three also can be set in actual applications as required, and some have the colored article of multiple material or color moulding.
Claims (10)
1. miniature extrusion system that is used for the fused deposition rapid shaping, this system comprises pedestal and is located at shower nozzle on the pedestal, it is characterized in that described shower nozzle is two.
2. a kind of according to claim 1 miniature extrusion system that is used for the fused deposition rapid shaping, it is characterized in that: one of them described shower nozzle comprises screw rod, plunger type barrel, screw barrel and nozzle, screw rod is installed on the dead eye of pedestal, is provided with heating element heater on plunger type barrel and screw barrel; Be provided with nozzle at screw barrel front end; Wire feeder is towards the rear end of plunger type barrel; Wire feeder and screw rod are by drive mechanism.
3. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 2, it is characterized in that: be provided with deep groove ball bearing on described dead eye, described screw rod is installed on the described dead eye by this deep groove ball bearing.
4. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 2, it is characterized in that: at described dead eye is stepped hole, be provided with thrust ball bearing on this stepped hole, described screw rod is installed on the described dead eye by this thrust ball bearing.
5. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 2, it is characterized in that: the endless groove that circumferentially has 360 ° at described screw rod, described screw barrel cooperates with described screw rod and forms the spiral extrusion manifold betwixt, and the rear end of this spiral extrusion manifold communicates by the front end of this endless groove with the plunger type barrel.
6. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 2, it is characterized in that: described nozzle is that glade plane space cooperates with the front end of described screw cylinder.
7. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 6, it is characterized in that: on described pedestal, be provided with rotating shaft, connect lever and be located on the described pedestal by this rotating shaft activity, described two nozzles are connected lever with this two ends connect.
8. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 7, it is characterized in that: described nozzle both sides are provided with positive stop lug boss, and this positive stop lug boss flexibly connects with the described lever that is connected.
9. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in the claim 2, it is characterized in that: the described heating element heater on described each shower nozzle is separate.
10. as a kind of miniature extrusion system that is used for the fused deposition rapid shaping as described in each in the claim 2 to 9, it is characterized in that: be provided with thermal insulation board between described dead eye and wire feeder and the described heating element heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200518006U CN201272015Y (en) | 2008-08-05 | 2008-08-05 | Miniature extrusion system for melting fused deposition rapid moulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200518006U CN201272015Y (en) | 2008-08-05 | 2008-08-05 | Miniature extrusion system for melting fused deposition rapid moulding |
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| Publication Number | Publication Date |
|---|---|
| CN201272015Y true CN201272015Y (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200518006U Expired - Fee Related CN201272015Y (en) | 2008-08-05 | 2008-08-05 | Miniature extrusion system for melting fused deposition rapid moulding |
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| Country | Link |
|---|---|
| CN (1) | CN201272015Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331909A (en) * | 2013-06-05 | 2013-10-02 | 吴江中瑞机电科技有限公司 | Wire outlet head of three-dimensional printer |
| CN106863774A (en) * | 2017-04-12 | 2017-06-20 | 武汉科技大学 | A kind of colour mixture prints miniature extrusion shower nozzle |
| WO2020259140A1 (en) * | 2019-06-26 | 2020-12-30 | 北京矩阵空间科技有限公司 | Composite extrusion 3d printing nozzle and 3d printer |
-
2008
- 2008-08-05 CN CNU2008200518006U patent/CN201272015Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331909A (en) * | 2013-06-05 | 2013-10-02 | 吴江中瑞机电科技有限公司 | Wire outlet head of three-dimensional printer |
| CN106863774A (en) * | 2017-04-12 | 2017-06-20 | 武汉科技大学 | A kind of colour mixture prints miniature extrusion shower nozzle |
| WO2020259140A1 (en) * | 2019-06-26 | 2020-12-30 | 北京矩阵空间科技有限公司 | Composite extrusion 3d printing nozzle and 3d printer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20120805 |