CN105479757A - Conical screw extrusion device suitable for FDM printer - Google Patents
Conical screw extrusion device suitable for FDM printer Download PDFInfo
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- CN105479757A CN105479757A CN201610036771.5A CN201610036771A CN105479757A CN 105479757 A CN105479757 A CN 105479757A CN 201610036771 A CN201610036771 A CN 201610036771A CN 105479757 A CN105479757 A CN 105479757A
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Abstract
The invention provides a conical screw extrusion device suitable for an FDM (Fused Deposition Modeling) printer. The conical screw extrusion device is composed of a drive motor, a transmission mechanism and a screw extrusion mechanism which are sequentially connected. A screw in the screw extrusion mechanism is a conical screw. A thread part of the conical screw is composed of a conical section and a straight section, and the length ratio of the conical section to the straight section is at least 4:1. An inner cavity of a charging barrel is composed of a conical section and a straight section and is matched with the conical screw in outer diameter. An extrusion head is composed of a connector and a hot melting sprayer. The section of the connector is in a T shape, the connector is fixed to the lower end face of the charging barrel, and a funnel-shaped through hole is formed in the upper half part of the connector in the axial direction and communicated with a coaxial through hole provided with an inner thread at the lower half part. The hot melting sprayer is connected with the connector through a thread formed on the outer surface of the hot smelting sprayer. Under the condition that the enough spiral line length can be guaranteed, the overall structural size and weight of the whole extrusion device are greatly reduced, device driving running is easier, and the manufacturing cost can be reduced.
Description
Technical field
The invention belongs to 3D printing equipment technical field, be specifically related to the conical screw extrusion equipment that one is applicable to FDM (fused glass pellet) printer.
Background technology
3D printing is the one of rapid shaping technique, and development is swift and violent in recent years.Its principle is: first carry out solid modelling by 3 d modeling software, then carries out step section by Slice Software to model.During work, 3D printer, by reading the information of every layer of cross section, uses powdery metal or plastics etc. successively can print thus produce 3D solid by jointing material.This technology is widely used at numerous areas such as industrial design, automobile, Aero-Space, Making mold.
FDM technology is the one that current 3D prints in mainstream technology, it is mainly using hot-melt plastic silk materials such as ABS, PLA as printing consumables, silk material sends into thermal treatment zone heating and melting by wire feeder, a plunger thrust by non-melting silk material self is extruded, then moving thus printing of shower nozzle is extruded in cooperation.But this technology exists following shortcoming: to the mobility, shrinkage factor, intensity etc. of material, there is higher requirement, cause very limited for the material of FDM technology at present; Often soften due to heat transfer near the silk material end of the thermal treatment zone, the pressure that wire feeder is produced in shower nozzle is not enough, causes obstruction and cannot normal print; Shredding process process adds printing cost.For the problems that FDM technology exists, the patent application of application number 201410441995.5, disclose a kind of extruder being applicable to FDM printer, this FDM printer extruder have employed Screw Extrusion principle, though can realize steadily extruding effect, but still have following deficiency: what adopt because of its extrusion screw rod is common straight screw-rod structure, if when will plastify needs large compression ratio, fluffy plastic granule or powder, its plasticizing effect is poor; In order to ensure the conveying of material, melting and homogenizing, screw rod just needs larger draw ratio (being generally 25 ~ 30), and this will cause spiro rod length to increase, extrusion equipment overall dimension be strengthened, weight penalty, and then driving is difficult; When material is directly extruded in this extruder screw after plasticizing, material meeting inertia remains on the screw in barrel, thus easily causes the distortion of printing product, reduces the precision printing product shape and size.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of conical screw extrusion equipment being applicable to FDM printer is provided, to be applicable to material widely, and improve stability and the reliability of FDM technology printing.
For achieving the above object, the technical solution used in the present invention is a kind of conical screw extrusion equipment being applicable to FDM printer, this extrusion equipment is made up of the drive motors connected successively, transmission mechanism and Screw Extrusion mechanism, it is characterized in that the screw rod in Screw Extrusion mechanism is conical screw, the threaded portion of conical screw is made up of conical section and flat segments, and conical section is at least 4:1 with the length ratio of flat segments; The inner chamber of barrel is also made up of conical section and flat segments, and mates with conical screw external diameter; Extruder head is made up of a connector and hot melt shower nozzle, and the cross sectional shape of connector is "T"-shaped, is fixed on the lower surface of barrel, and its first half has a funnel-shaped hole vertically, and opens female coaxial through-hole with Lower Half and communicate; Hot melt shower nozzle is connected with connector by the screw thread that its outer surface is opened.
Also be provided with one block of porous plate in the Screw Extrusion mechanism of above conical screw extrusion equipment, this porous plate is arranged between barrel and connector.
Conical screw conical section described in above conical screw extrusion equipment is 4 ~ 6:1 with the length ratio of flat segments.
The cone angle of conical screw conical section described in above conical screw extrusion equipment is α is 10 ~ 45 °.
The spiral groove depth of conical screw conical section described in above conical screw extrusion equipment shoals gradually along extruding direction.
Also can configure decelerator as required between above-mentioned drive motors and transmission mechanism, this well known to a person skilled in the art general knowledge.
The present invention compared with prior art, has following beneficial effect:
1, because the screw rod in extrusion equipment provided by the invention is conical screw, thus can under the sufficiently long helical length precondition of guarantee, significantly reduce overall structure size and the weight of whole extrusion equipment, not only make this device drives operate more light easy, and can also preparation cost be reduced.
2, because the length of conical screw conical section in extrusion equipment provided by the invention at least grows 3 times than the length of flat segments, in addition its size reduces gradually, structurally again can the certain compression ratio of self-assembling formation, thus fully material can not only be ensured, comprise the plasticizing compression ratio of the large compression ratio of needs, fluffy plastic granule or powder, make plastifying fusion effect better, and the intensity of conical screw can also be increased, improve its service life, kill two birds with one stone.
3, because extrusion equipment provided by the invention devises the flat segments of certain length after conical screw conical section, thus can ensure that the material form extruded is more stable.
4, one block of porous plate has been laid because extrusion equipment provided by the invention is arranged between barrel and extruder head, in addition one section of straight melt flow channel is also had in extruder head, thus the material movement after Screw Extrusion melting is made to be no longer rotary motion, but become rectilinear motion from rotary motion, and make discharging more even, avoid the distortion of material during prior art final discharging, greatly improve and print the precision of product and the problem of quality.
5, because the extruder head of extrusion equipment provided by the invention is made up of connector and hot melt shower nozzle, and hot melt shower nozzle and connector are again thread connecting mode, thus for convenience detach, and for the hot melt shower nozzle of the character assembling different inner diameters of different material, the scope of application can be expanded.
6, because extrusion equipment provided by the invention is shoaled gradually along extruding direction by the spiral groove depth of conical section, thus not only can increase the compression ratio of material further, it also can increase the shearing force to material, make material melts evenly.
Accompanying drawing explanation
Fig. 1 is the structural blast decomposing schematic representation of conical screw extrusion equipment provided by the invention;
Fig. 2 is the assembling cross-sectional view of conical screw extrusion equipment vertical direction provided by the invention;
Fig. 3 is the structure of conical screw and the cone angle schematic diagram of conical section in conical screw extrusion equipment provided by the invention;
Wherein, 1-drive motors; 2-fore bearing; 3-rear bearing; 4-bearing cap; 5-bearing block; 6-conical screw; 7-barrel; 8-hopper; 9-hot melt shower nozzle; 10-porous plate; 11-connector; 12-round nut; 13-round nut pad; 14-heat shield; 15-temperature sensor; 16-heating jacket.
Detailed description of the invention
Below by drawings and Examples, the present invention is specifically described; what be necessary to herein means out is that following examples are only for the invention will be further described; limiting the scope of the invention can not be interpreted as; the person skilled in the art in this field makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to scope.
Embodiment 1
The conical screw extrusion equipment of what the present embodiment provided be applicable to 3D printer, its structure as shown in Figure 1, 2, specifically comprise connect successively drive motors 1, transmission mechanism and Screw Extrusion mechanism.
Wherein Screw Extrusion mechanism comprises screw rod, barrel 7, heating jacket 16, hopper 8, extruder head and porous plate 10.Screw rod in Screw Extrusion mechanism is conical screw 6, its structure as shown in Figure 3, the threaded portion of conical screw 6 is made up of conical section and flat segments, and the length of conical section and flat segments is 4:1 than the present embodiment, cone angle the present embodiment of conical screw 6 conical section is 10 ° and sees Fig. 3, and the spiral groove depth of conical section shoals gradually along extruding direction; The inner chamber of barrel 7 is also made up of conical section and flat segments, and mates with conical screw 6 external diameter, outer wall is installed hopper 8, and barrel 7 and hopper 8 are fixedly connected by screw, and the feedstock direction of hopper 8 is 30 ° with extruding angular separation; Heating jacket 16 is coated on outside barrel 7, which is provided with temperature sensor 15; Extruder head is made up of a connector 11 and hot melt shower nozzle 9, the cross sectional shape of connector 11 is "T"-shaped, the lower surface of barrel 7 is fixedly connected on by screw, its first half has a funnel-shaped hole vertically, and open female coaxial through-hole with Lower Half and communicate, hot melt shower nozzle 9 is connected with connector 11 by the screw thread that its one end outer surface is opened, and the outer surface of the other end is provided with heating jacket 16; Porous plate 10 is arranged between barrel 7 and connector 11.
Transmission mechanism comprises fore bearing 2, rear bearing 3, bearing cap 4 and bearing block 5, conical screw 6 rear end of Screw Extrusion mechanism is fixed in bearing block 5 by the cooperation of fore bearing 2, rear bearing 3 and bearing cap 4, and realizing axial location by connector round nut 12 pairs of rear bearings 3, round nut 12 carries out screens anti-rotation by round nut pad 13; Heat shield 14 is also provided with between barrel 7 and bearing block 5.
Drive motors 1 is connected with conical screw 6 by output shaft, and the two connected mode is that key connects.Drive motors 1 also can configure decelerator as required.
When the present invention works, first the heating jacket 16 of conical screw extrusion equipment is opened, drive motors 1 is opened when temperature rises to the temperature of suitable extruded material, drive motors 1 drives conical screw 6 to move, then plastic granule or powder are sent into barrel 7 by loading hopper 8, plastic granule or powder are fed forward under the effect of conical screw 6, under heat and shear action, be melted to molten condition gradually simultaneously, extrude after homogenizing, the temperature sensor 15 that barrel 7 outer wall is installed can monitor plastics temperature in the molten state at any time, when temperature is higher than time temperature required, heating jacket 16 stops heating, when temperature is lower than time temperature required, heating jacket 16 starts heating work.Material finally realizes the 3 D-printing of product after melt extruding on print platform.
Embodiment 2
Its structure of conical screw extrusion equipment of the present embodiment 3D printer is substantially the same manner as Example 2, and difference is that the conical section of conical screw 6 is 6:1 with the length ratio of flat segments, and the cone angle of conical screw 6 conical section is 45 °.
Embodiment 3
Its structure of conical screw extrusion equipment of the present embodiment 3D printer is substantially the same manner as Example 1, difference is that the conical section of conical screw 6 is 5:1 with the length ratio of flat segments, and the cone angle of conical screw 6 conical section is 30 °, drive motors 1 is direct current generator, and and configures decelerator between transmission mechanism.
Claims (8)
1. one kind is applicable to the conical screw extrusion equipment of FDM printer, this extrusion equipment comprises the drive motors (1), transmission mechanism and the Screw Extrusion mechanism formation that connect successively, it is characterized in that the screw rod in Screw Extrusion mechanism is conical screw (6), the threaded portion of conical screw (6) is made up of conical section and flat segments, and conical section is at least 4:1 with the length ratio of flat segments; The inner chamber of barrel (7) is also made up of conical section and flat segments, and mates with conical screw (6) external diameter; Extruder head is made up of a connector (11) and hot melt shower nozzle (9), the cross sectional shape of connector (11) is "T"-shaped, be fixed on the lower surface of barrel (7), its first half has a funnel-shaped hole vertically, and open female coaxial through-hole with Lower Half and communicate, hot melt shower nozzle (9) is connected with connector (11) by the screw thread that its outer surface is opened.
2. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 1, it is characterized in that also being provided with one piece of porous plate (10) in the Screw Extrusion mechanism of this extrusion equipment, this porous plate (10) is arranged between barrel (7) and connector (11).
3. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 1 and 2, is characterized in that conical screw described in this extrusion equipment (6) conical section is 4 ~ 6:1 with the length ratio of flat segments.
4. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 1 and 2, is characterized in that the cone angle of conical screw described in this extrusion equipment (6) conical section is 10 ~ 45 °.
5. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 3, is characterized in that the cone angle of conical screw described in this extrusion equipment (6) conical section is 10 ~ 45 °.
6. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 1 and 2, is characterized in that the spiral groove depth of conical screw described in this extrusion equipment (6) conical section shoals gradually along extruding direction.
7. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 3, is characterized in that the spiral groove depth of conical screw described in this extrusion equipment (6) conical section shoals gradually along extruding direction.
8. a kind of conical screw extrusion equipment being applicable to 3D printer according to claim 5, is characterized in that the spiral groove depth of conical screw described in this extrusion equipment (6) conical section shoals gradually along extruding direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036771.5A CN105479757B (en) | 2016-01-20 | 2016-01-20 | A kind of conical screw extrusion equipment suitable for FDM printers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036771.5A CN105479757B (en) | 2016-01-20 | 2016-01-20 | A kind of conical screw extrusion equipment suitable for FDM printers |
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| CN105479757A true CN105479757A (en) | 2016-04-13 |
| CN105479757B CN105479757B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610036771.5A Expired - Fee Related CN105479757B (en) | 2016-01-20 | 2016-01-20 | A kind of conical screw extrusion equipment suitable for FDM printers |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106182787A (en) * | 2016-09-18 | 2016-12-07 | 四川大学 | A kind of powder bonding forming desktop type 3D printer and method thereof |
| CN106378457A (en) * | 2016-10-27 | 2017-02-08 | 上海建桥学院 | Extruding and stacking efficient forming device |
| WO2017206126A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳万为智能制造科技有限公司 | Multi-gyring extruder for 3d printing, and control system |
| CN107866566A (en) * | 2016-09-26 | 2018-04-03 | 东台精机股份有限公司 | Three-dimensional print metal function shower nozzle module and computer numerical control processing unit (plant) |
| CN109895380A (en) * | 2017-12-11 | 2019-06-18 | 立方通达实业（天津）有限公司 | A kind of feeding mechanism of test model 3D printer |
| CN109968659A (en) * | 2019-04-09 | 2019-07-05 | 天津大学 | One kind deepening equidistant screw biology 3D printing extrusion device |
| CN110126236A (en) * | 2019-06-14 | 2019-08-16 | 深圳市畅形增材科技有限公司 | Diameter progressive screw and the thermoplastic granulates material molten extrusion device for using diameter progressive screw |
| CN113142626A (en) * | 2021-04-26 | 2021-07-23 | 深圳市创想三维科技有限公司 | Quick detach formula discharging device and 3D printer |
| CN113665100A (en) * | 2021-09-16 | 2021-11-19 | 四川大学 | Co-rotating conical double-screw fused deposition modeling extrusion type 3D printing nozzle |
| CN114407346A (en) * | 2022-01-07 | 2022-04-29 | 西北工业大学 | Forming spray head and additive manufacturing equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924841A (en) * | 1972-12-07 | 1975-12-09 | Jitsumi Shinmoto | Extrusion moulding machine |
| CN2918020Y (en) * | 2006-06-15 | 2007-07-04 | 覃伟明 | Crushing material supplying type evacuation machine head plastic pelletizer |
| CN2928453Y (en) * | 2006-06-15 | 2007-08-01 | 覃伟明 | Plastic film recovery prilling machine |
| CN103317725A (en) * | 2013-05-23 | 2013-09-25 | 魏伯卿 | Air 3D printing material extruding and holding apparatus |
| CN203637175U (en) * | 2013-11-10 | 2014-06-11 | 陕西子竹电子有限公司 | Extrusion device for 3D (three-dimensional) printing pen |
| CN205889894U (en) * | 2016-01-20 | 2017-01-18 | 四川大学 | Conical screw extrusion equipment suitable for FDM printer |
-
2016
- 2016-01-20 CN CN201610036771.5A patent/CN105479757B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924841A (en) * | 1972-12-07 | 1975-12-09 | Jitsumi Shinmoto | Extrusion moulding machine |
| CN2918020Y (en) * | 2006-06-15 | 2007-07-04 | 覃伟明 | Crushing material supplying type evacuation machine head plastic pelletizer |
| CN2928453Y (en) * | 2006-06-15 | 2007-08-01 | 覃伟明 | Plastic film recovery prilling machine |
| CN103317725A (en) * | 2013-05-23 | 2013-09-25 | 魏伯卿 | Air 3D printing material extruding and holding apparatus |
| CN203637175U (en) * | 2013-11-10 | 2014-06-11 | 陕西子竹电子有限公司 | Extrusion device for 3D (three-dimensional) printing pen |
| CN205889894U (en) * | 2016-01-20 | 2017-01-18 | 四川大学 | Conical screw extrusion equipment suitable for FDM printer |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206126A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳万为智能制造科技有限公司 | Multi-gyring extruder for 3d printing, and control system |
| CN106182787A (en) * | 2016-09-18 | 2016-12-07 | 四川大学 | A kind of powder bonding forming desktop type 3D printer and method thereof |
| CN107866566A (en) * | 2016-09-26 | 2018-04-03 | 东台精机股份有限公司 | Three-dimensional print metal function shower nozzle module and computer numerical control processing unit (plant) |
| CN106378457A (en) * | 2016-10-27 | 2017-02-08 | 上海建桥学院 | Extruding and stacking efficient forming device |
| CN106378457B (en) * | 2016-10-27 | 2019-09-27 | 上海建桥学院 | A kind of extruding stacking high efficiency forming device |
| CN109895380A (en) * | 2017-12-11 | 2019-06-18 | 立方通达实业（天津）有限公司 | A kind of feeding mechanism of test model 3D printer |
| CN109968659A (en) * | 2019-04-09 | 2019-07-05 | 天津大学 | One kind deepening equidistant screw biology 3D printing extrusion device |
| CN110126236A (en) * | 2019-06-14 | 2019-08-16 | 深圳市畅形增材科技有限公司 | Diameter progressive screw and the thermoplastic granulates material molten extrusion device for using diameter progressive screw |
| CN113142626A (en) * | 2021-04-26 | 2021-07-23 | 深圳市创想三维科技有限公司 | Quick detach formula discharging device and 3D printer |
| CN113665100A (en) * | 2021-09-16 | 2021-11-19 | 四川大学 | Co-rotating conical double-screw fused deposition modeling extrusion type 3D printing nozzle |
| CN114407346A (en) * | 2022-01-07 | 2022-04-29 | 西北工业大学 | Forming spray head and additive manufacturing equipment |
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| CN105479757B (en) | 2018-02-23 |
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