CN205889894U - Conical screw extrusion equipment suitable for FDM printer - Google Patents
Conical screw extrusion equipment suitable for FDM printer Download PDFInfo
- Publication number
- CN205889894U CN205889894U CN201620058778.2U CN201620058778U CN205889894U CN 205889894 U CN205889894 U CN 205889894U CN 201620058778 U CN201620058778 U CN 201620058778U CN 205889894 U CN205889894 U CN 205889894U
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- China
- Prior art keywords
- conical
- screw
- extrusion equipment
- conical screw
- extrusion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a conical screw extrusion equipment who is applicable to FDM ( fused deposition modeling ) printer comprises driving motor, drive mechanism and the screw extruder who connects gradually, and the screw rod during screw extruder constructs is conical screw, and conical screw's the threaded portion comprises the peaceful straight section of toper section, and the length of the two than is 4 at least: 1, the inner chamber of feed cylinder also comprises the peaceful straight section of toper section to match with the conical screw external diameter, extruding a pretext connector and hot melt shower nozzle and constituting, the cross sectional shape of connector is " T " shape, is fixed in the lower terminal surface of feed cylinder, and its first edge axial is opened has an infundibulate through -hole to it communicates with each other to open the female coaxial through -hole with the lower half, the hot melt shower nozzle links to each other with the connector through the screw thread of opening on its surface. The utility model discloses can guarantee under the sufficient helix length condition, reduce whole extrusion equipment's overall structure size and weight by a wide margin, not only make this device driver operation more light easy, just can also reduce the preparation cost.
Description
Technical field
This utility model belongs to 3d printing equipment technical field, and and in particular to one kind is applied to fdm, (fusion sediment becomes
Type) printer conical screw extrusion equipment.
Background technology
It is one kind of rapid shaping technique that 3d prints, and develops swift and violent in recent years.Its principle is: first passes through three-dimensional and builds
Mould software carries out solid modelling, then carries out step section by Slice Software to model.During work, 3d printer leads to
Cross the information reading every layer of cross section, with powdery metal or plastics etc. can jointing material successively printed thus
Produce 3D solid.This technology obtains in numerous areas such as industrial design, automobile, Aero-Space, Making mold
To being widely applied.
Fdm technology is that current 3d prints one of mainstream technology, and it is mainly with the hot-melt plastic silk such as abs, pla
As printing consumables, silk sends into thermal treatment zone heating and melting by wire feeder to material, by not melting the one of silk itself
Individual plunger thrust is extruded, then coordinates extrusion the moving thus being printed of shower nozzle.But this technology exist with
Lower shortcoming: to the mobility of material, shrinkage factor, intensity etc., there is higher requirement, lead to currently used for fdm skill
The material of art is very limited；The silk end of the close thermal treatment zone is often due to conducting heat and softening so that wire feeder is in spray
The pressure producing in head is not enough, lead to block and cannot normal print；Shredding process process increased printing cost.
The problems existing for fdm technology, the patent application of application number 201410441995.5, disclose a kind of suitable
For the extruder of fdm printer, this fdm printer extruder employs Screw Extrusion principle, though can be real
Now steadily extrude effect, but still have following deficiency: because its extrusion screw rod uses commonly straight screw-rod structure, such as
When fruit will plastify to the big compression ratio of needs, fluffy plastic granule or powder, its plasticizing effect is poor；
In order to ensure conveying, melting and the homogenizing of material, screw rod is accomplished by larger draw ratio (usually 25～30), this
Spiro rod length will be led to increase, so that extrusion equipment overall dimension is increased, weight penalty, and then drive difficult；Material
When directly being extruded after plasticizing in this extruder screw, material meeting inertia is maintained at the screw in barrel,
Thus easily causing printing product deformation, reduce the precision printing product shape and size.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of fdm printer that is applied to
Conical screw extrusion equipment, to be applied to wider material, and improves stability and the reliability of the printing of fdm technology
Property.
For achieving the above object, the technical solution adopted in the utility model is a kind of taper being applied to fdm printer
Screw extruder, this extrusion equipment is made up of the motor being sequentially connected, drive mechanism and Screw Extrusion mechanism,
It is characterized in that screw rod in Screw Extrusion mechanism is conical screw, the threaded portion of conical screw be by conical section and
Flat segments are constituted, and the length of conical section and flat segments is than at least 4:1；The inner chamber of barrel is also by conical section peace
Straight section is constituted, and mates with conical screw external diameter；Extruder head is made up of a connector and hot melt shower nozzle, adapter
Cross sectional shape is in " t " shape, is fixed on the lower surface of barrel, its first half has a funnel-shaped hole vertically, and
Open female coaxial through-hole with lower half to communicate；Hot melt shower nozzle passes through screw thread and the adapter opened on its outer surface
It is connected.
It is also provided with one block of porous plate, this porous plate is installed in the Screw Extrusion mechanism of above conical screw extrusion equipment
Between barrel and adapter.
The length of conical screw conical section described in above conical screw extrusion equipment and flat segments is than for 4～6:1.
The cone angle of conical screw conical section described in above conical screw extrusion equipment is 10～45 ° for α.
The spiral groove depth of conical screw conical section described in above conical screw extrusion equipment is gradually to become along extrusion direction
Shallow.
Also decelerator can be configured as needed, this is those skilled in the art between above-mentioned motor and drive mechanism
Known general knowledge.
This utility model compared with prior art, has the advantages that
1st, the screw rod in the extrusion equipment being provided due to this utility model is conical screw it is thus possible to ensure enough
Under conditions of helical length, significantly reduce overall structure size and the weight of whole extrusion equipment, not only make this
Device drives operating is more easily easy, and can also reduce preparation cost.
2nd, due to this utility model provide extrusion equipment in conical screw conical section length than flat segments length extremely
3 times to be grown less, its size is gradually reduced in addition, in structure again can the certain compression ratio of self-assembling formation, because
And material can not only be fully ensured that, including the plasticizing compression needing big compression ratio, fluffy plastic granule or powder
Ratio is so that plastifying fusion is better, and can also increase the intensity of conical screw, improves its service life, and one
Lift two to obtain.
3rd, because the extrusion equipment that this utility model provides devises the straight of certain length after conical screw conical section
Section, hereby it is ensured that the material form of extrusion is more stable.
4th, laid one piece of porous because the extrusion equipment that this utility model provides is arranged between barrel and extruder head
Plate, also has one section of straight melt flow channel in addition, thus the material movement after making to melt through Screw Extrusion is not in extruder head
It is rotary motion again, but is changed into moving along a straight line from rotary motion, and make discharging more uniform, it is to avoid existing skill
The deformation of material during art final discharging, greatly improves the printing precision of product and the problem of quality.
5th, the extruder head of the extrusion equipment being provided due to this utility model is to be made up of adapter and hot melt shower nozzle, and heat
Melt-blown head and adapter are thread connecting mode again, thus convenient dismounting, and the property assembling of different material can be directed to
The hot melt shower nozzle of different inner diameters, expands the scope of application.
6th, because the extrusion equipment that this utility model provides is to gradually become shallower as the spiral groove depth of conical section along extrusion direction
, thus not only can increase the compression ratio of material further, it also can increase the shearing force to material, so that material is melted
Melt evenly.
Brief description
The structural blast decomposing schematic representation of the conical screw extrusion equipment that Fig. 1 provides for this utility model；
The assembling cross-sectional view of the conical screw extrusion equipment vertical direction that Fig. 2 provides for this utility model；
The structure of conical screw and the cone angle of conical section in the conical screw extrusion equipment that Fig. 3 provides for this utility model
Schematic diagram；
Wherein, 1- motor；2- fore bearing；Bearing after 3-；4- bearing cap；5- bearing block；6- conical screw；
7- barrel；8- hopper；9- hot melt shower nozzle；10- porous plate；11- adapter；12- round nut；13- round nut is used
Pad；14- heat shield；15- temperature sensor；16- heating mantle.
Specific embodiment
Below by drawings and Examples, this utility model is specifically described it is necessary to it is pointed out here that be following
Embodiment is served only for that the utility model is described in further detail it is impossible to be interpreted as the limit to this utility model protection domain
System, the person skilled in the art in this field makes some non-intrinsically safes according to above-mentioned this utility model content to this utility model
Improvement and adjustment, still fall within this utility model protection domain.
Embodiment 1
The present embodiment provide the conical screw extrusion equipment being applied to 3d printer, its structure as shown in Figure 1, 2,
Specifically include the motor 1 being sequentially connected, drive mechanism and Screw Extrusion mechanism.
Wherein Screw Extrusion mechanism includes screw rod, barrel 7, heating mantle 16, hopper 8, extruder head and porous plate 10.
Screw rod in Screw Extrusion mechanism is conical screw 6, and its structure is as shown in figure 3, the threaded portion of conical screw 6 is
It is made up of conical section and flat segments, and conical section is 4:1 with the length of flat segments than the present embodiment, conical screw 6
Cone angle the present embodiment of conical section is shown in Fig. 3 for 10 °, and the spiral groove depth of conical section is to gradually become shallower as along extrusion direction
's；The inner chamber of barrel 7 is also made up of conical section and flat segments, and mates with conical screw 6 external diameter, and outer wall is pacified
Charging hopper 8, barrel 7 is fixedly connected by screw with hopper 8, and the feedstock direction of hopper 8 with extrusion angular separation is
30°；Heating mantle 16 is coated on outside barrel 7, which is provided with temperature sensor 15；Extruder head is by a connector 11
Constitute with hot melt shower nozzle 9, the cross sectional shape of adapter 11 is in " t " shape, is fixedly connected on barrel 7 by screw
Lower surface, its first half has a funnel-shaped hole vertically, and opens female coaxial through-hole with lower half
Communicate, the screw thread that hot melt shower nozzle 9 passes through to open on its one end outer surface is connected with adapter 11, the outer surface of the other end
It is provided with heating mantle 16；Porous plate 10 is arranged between barrel 7 and adapter 11.
Drive mechanism includes fore bearing 2, rear bearing 3, bearing cap 4 and bearing block 5, the taper of Screw Extrusion mechanism
Screw rod 6 rear end is fixed in bearing block 5 with fore bearing 2, rear bearing 3 and bearing cap 4, and by even
Fitting round nut 12 realizes axially position to rear bearing 3, and round nut 12 carries out screens by round nut with pad 13 to be prevented
Turn；It is additionally provided with heat shield 14 between barrel 7 and bearing block 5.
Motor 1 is connected with conical screw 6 by output shaft, and the two connected mode is bonded.Motor 1
Decelerator also can be configured as needed.
During utility model works, first the heating mantle 16 of conical screw extrusion equipment is opened, treat that temperature rises to
Motor 1 is opened, motor 1 drives conical screw 6 to move, and then will mould during the temperature of suitable extruded material
Material pellet or powder send into barrel 7 by loading hopper 8, plastic granule or powder in the presence of conical screw 6 forward
Conveying, is gradually melted to molten condition under heat and shear action simultaneously, homogenized rear extrusion, and barrel 7 outer wall is pacified
The temperature sensor 15 of dress can monitor plastics temperature in the molten state at any time, when temperature is higher than temperature required,
Heating mantle 16 stops heating, and when temperature is less than temperature required, heating mantle 16 begins to warm up work.Material is through molten
The 3 D-printing of product is finally realized after melting extrusion 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, difference
It is the conical section of conical screw 6 and the length of flat segments than for 6:1, 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
It is the conical section of conical screw 6 and the length of flat segments than for 5:1, and the cone angle of conical screw 6 conical section is
30 °, motor 1 is direct current generator, and configures decelerator and drive mechanism between.
Claims (8)
1. a kind of conical screw extrusion equipment being applied to fdm printer, motor (1), drive mechanism and Screw Extrusion mechanism that this extrusion equipment includes being sequentially connected are constituted, it is characterized in that the screw rod in Screw Extrusion mechanism is conical screw (6), the threaded portion of conical screw (6) is to be made up of conical section and flat segments, and the length of conical section and flat segments is than at least 4:1；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 adapter (11) is in " t " shape, it is 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, the screw thread that hot melt shower nozzle (9) passes through to open on its outer surface is connected with adapter (11).
2. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 1, it is characterized in that being also 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 adapter (11).
3. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 1 and 2 is it is characterised in that the length of the conical section of conical screw (6) described in this extrusion equipment and flat segments is than for 4～6:1.
4. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 1 and 2 is it is characterised in that the cone angle of the conical section of conical screw (6) described in this extrusion equipment is 10～45 °.
5. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 3 is it is characterised in that the cone angle of the conical section of conical screw (6) described in this extrusion equipment is 10～45 °.
6. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 1 and 2 is it is characterised in that the spiral groove depth of the conical section of conical screw (6) described in this extrusion equipment gradually becomes shallower as along extrusion direction.
7. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 3 is it is characterised in that the spiral groove depth of the conical section of conical screw (6) described in this extrusion equipment gradually becomes shallower as along extrusion direction.
8. a kind of conical screw extrusion equipment being applied to fdm printer according to claim 5 is it is characterised in that the spiral groove depth of the conical section of conical screw (6) described in this extrusion equipment gradually becomes shallower as along extrusion direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620058778.2U CN205889894U (en) | 2016-01-20 | 2016-01-20 | Conical screw extrusion equipment suitable for FDM printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620058778.2U CN205889894U (en) | 2016-01-20 | 2016-01-20 | Conical screw extrusion equipment suitable for FDM printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205889894U true CN205889894U (en) | 2017-01-18 |
Family
ID=57764958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620058778.2U Withdrawn - After Issue CN205889894U (en) | 2016-01-20 | 2016-01-20 | Conical screw extrusion equipment suitable for FDM printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205889894U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479757A (en) * | 2016-01-20 | 2016-04-13 | 四川大学 | Conical screw extrusion device suitable for FDM printer |
| IT201800006331A1 (en) * | 2018-06-14 | 2019-12-14 | Extrusion head for 3D printers. | |
| US20230013514A1 (en) * | 2021-07-15 | 2023-01-19 | Hyundai Motor Company | 3D Printing Apparatus and Method |
-
2016
- 2016-01-20 CN CN201620058778.2U patent/CN205889894U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479757A (en) * | 2016-01-20 | 2016-04-13 | 四川大学 | Conical screw extrusion device suitable for FDM printer |
| IT201800006331A1 (en) * | 2018-06-14 | 2019-12-14 | Extrusion head for 3D printers. | |
| US20230013514A1 (en) * | 2021-07-15 | 2023-01-19 | Hyundai Motor Company | 3D Printing Apparatus and Method |
| US11745422B2 (en) * | 2021-07-15 | 2023-09-05 | Hyundai Motor Company | 3D printing apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20180223 |