DE102015012907A1 - 3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables - Google Patents
3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables Download PDFInfo
- Publication number
- DE102015012907A1 DE102015012907A1 DE102015012907.4A DE102015012907A DE102015012907A1 DE 102015012907 A1 DE102015012907 A1 DE 102015012907A1 DE 102015012907 A DE102015012907 A DE 102015012907A DE 102015012907 A1 DE102015012907 A1 DE 102015012907A1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- delivery channel
- unit
- dfk
- channel
- Prior art date
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
3D-Druckkopf mit extra-langer Kombination aus Düse und Förderkanal für amorphe und kristalline Verbrauchsmaterialien mit variierbarem Erweichungsbereich zur Vermeidung von Filament-Blockaden im Förderkanal und vereinfachtem Düsentausch.3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables with variable softening range to avoid filament blockages in the delivery channel and simplified nozzle exchange.
Description
3D-Druckköpfe fördern Verbrauchs-Materialien durch einen Förderkanal zu einer Austritts-Öffnung (Düse). Druckköpfe (auch hotend) des FDM-Verfahrens variieren in ihrer Bauform. Breit durchgesetzt haben sich mittlerweile Druckköpfe vollständig aus Stahl, Messing und Aluminium aufgebaut (fulmetal hotend). Diese fulmetal Bauformen haben aber noch Mängel, welche sich darin zeitigen, daß ein hotend besonders
- • gut für amorphe als auch kristalline Materialien geeignet ist, die Bauform jedoch
- • keinen schnellen Düsenwechsel zulässt. Der Verwender muss erheblichen Aufwand betreiben, um die Düse zu wechseln.
- • good for amorphous as well as crystalline materials, but the design
- • does not allow quick nozzle change. The user must spend considerable effort to change the nozzle.
Eine andere Bauform ermöglicht zwar das
- • schnelle Wechseln von Düsen, zeigt aber
- • Schwierigkeiten beim Drucken von amorphen Materialien insbesondere von PLA-Filament oder anderen über ein breites Temperatur-Spektrum erweichenden Materialien (z. B. „Layceramic”, ein sinterbares FDM-Filament mit hohem keramischen Füllstoffgehalt) Das liegt am ausgedehnten Erweichungsbereich innerhalb des Förderkanales durch mangelhafte Trennung von heißen und abgekühlten Zonen entlang der Ausdehnung des Förderkanales.
- • Diese Bauform ist unter Umständen auch nicht dicht gegenüber geschmolzenem Material. Dieses rinnt bei nicht perfekt ausgeführter Dichtfläche aus der Pressfläche zwischen Förderkanal und Düse aus.
- • quick change of nozzles, but shows
- Difficulty in printing amorphous materials, particularly PLA filament or other materials that soften across a broad temperature spectrum (eg layceramic, a sinterable FDM filament with a high ceramic filler content), which is due to the extensive softening range within the delivery channel poor separation of hot and cooled zones along the extension of the delivery channel.
- • This design may not be sealed against molten material. This runs out of the pressing surface between the delivery channel and the nozzle when the sealing surface is not perfectly executed.
Die vorliegende Erfindung macht sich zur Aufgabe, ein hotend zu kreieren, welches unter anderem
- • amorphe als auch kristalline Thermoplaste, ohne die Neigung im Förderkanal zu blockieren (wegen zu hoher Reibung zwischem erweichtem Material und der Innen-Wandung), fördert,
- • den Wechsel von Düsen (zwecks Durchmesser-Wechsel der Austrittsöffnung) sehr vereinfacht,
- • die Aufheizzeiten erheblich zu reduziert,
- • die Leckage-Neigung baulich völlig ausschließt,
- • die eingesetzte Wärmeenergie zum Aufschmelzen des Filamentes nur zu einem geringeren Teil über die Kühlvorrichtung ableitet,
- • weiterhin sind keine hotends bekannt, welche über die Möglichkeit verfügen, den Innen-Durchmesser des Förderkanales, welcher bei bisherigen Bauformen im Kühlkörper verläuft, durch einfaches Austauschen einer preiswerten Einheit (FDK) auszutauschen, dies ist wichtig bei der Verwendung unterschiedlicher Filament-Durchmesser, etwa auch bei übergroßen Filamenten, die nicht in einen beispielsweise für 3,0 mm ausgelegten Förderkanal hineinpassen. Hier müssten der Kanal und die ganze Kühleinheit gewechselt werden.
- • amorphous as well as crystalline thermoplastics, without blocking the inclination in the conveying channel (due to excessive friction between the softened material and the inner wall),
- • the change of nozzles (for the purpose of changing the diameter of the outlet opening) is greatly simplified,
- • significantly reduces the heating times,
- • structurally excludes the leakage inclination,
- Dissipates the heat energy used to melt the filament only to a lesser extent via the cooling device,
- Furthermore, no hotends are known which have the possibility of exchanging the inner diameter of the delivery channel, which runs in the heat sink in previous designs, by simply exchanging a low-cost unit (FDK), this is important when using different filament diameters. even with oversized filaments, which do not fit into a, for example designed for 3.0 mm conveyor channel. Here, the channel and the whole cooling unit would have to be changed.
Die Aufgabe wird gelöst durch eine Düsen-Förderkanal-Kombination (Einheit) welche dem hotend dient, Heizkörper, als auch Kühlkörper, sowie Sensoren daran zu befestigen. Diese erfindungsgemäße Einheit dient als zentrales Verbindungs-Bauteil. An ihr werden per Klemmung (in der Art einer Schelle) die anderen Bauteile angeklemmt, eingespannt oder per Schraubung befestigt. Hierfür muß die Montage-Platte M nicht vom Druckkopf-Schlitten entfernt werden, welches als weiterer erheblicher Vorteil angesehen wird. Ein solches hotend ist zusätzlich in der Lage, auch solche Verbrauchsmaterialien zu fördern, die keine Thermoplaste für das FDM-Verfahren sind. Etwa Pasten, Silikone, Teige mineralische Massen, aktinisch oder durch chemische Reaktionen aushärtbare Polymere, also generell Materialien, welche bei zu Beginn der Förderung sich nicht im festen Aggregat-Zustand befinden. Weitere Teile der Beschreibung sind den Erläuterungen der jeweiligen Figuren angefügt. Beschreibung/Legende The object is achieved by a nozzle-conveying channel combination (unit) which serves the hotend, radiator, as well as heat sink, and to attach sensors thereto. This unit according to the invention serves as a central connection component. At her by clamping (in the manner of a clamp), the other components are clamped, clamped or fastened by screwing. For this purpose, the mounting plate M does not have to be removed from the printhead carriage, which is regarded as a further significant advantage. Such a hotend is additionally able to promote such consumables that are not thermoplastics for the FDM process. For example, pastes, silicones, doughs, mineral compounds, actinic or chemically curable polymers, ie generally materials which are not in the solid aggregate state at the beginning of the production. Further parts of the description are added to the explanations of the respective figures. Description / Legend
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012907.4A DE102015012907A1 (en) | 2015-10-07 | 2015-10-07 | 3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012907.4A DE102015012907A1 (en) | 2015-10-07 | 2015-10-07 | 3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables |
Publications (1)
Publication Number | Publication Date |
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DE102015012907A1 true DE102015012907A1 (en) | 2017-04-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102015012907.4A Withdrawn DE102015012907A1 (en) | 2015-10-07 | 2015-10-07 | 3D printhead with extra-long combination of nozzle and delivery channel for amorphous and crystalline consumables |
Country Status (1)
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DE (1) | DE102015012907A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107244074A (en) * | 2017-07-27 | 2017-10-13 | 张玲玲 | A kind of flow automatic diameter changing 3D printing extrusion method |
WO2018213559A1 (en) * | 2017-05-17 | 2018-11-22 | Slice Engineering LLC | Adaptable high-performance extrusion head for fused filament fabrication systems |
CN111958972A (en) * | 2020-09-22 | 2020-11-20 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
-
2015
- 2015-10-07 DE DE102015012907.4A patent/DE102015012907A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018213559A1 (en) * | 2017-05-17 | 2018-11-22 | Slice Engineering LLC | Adaptable high-performance extrusion head for fused filament fabrication systems |
US10875244B2 (en) | 2017-05-17 | 2020-12-29 | Slice Engineering LLC | Adaptable high-performance extrusion head for fused filament fabrication systems |
CN107244074A (en) * | 2017-07-27 | 2017-10-13 | 张玲玲 | A kind of flow automatic diameter changing 3D printing extrusion method |
CN107244074B (en) * | 2017-07-27 | 2019-08-02 | 严红飞 | A kind of flow automatic diameter changing 3D printing extrusion method |
CN111958972A (en) * | 2020-09-22 | 2020-11-20 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
CN111958972B (en) * | 2020-09-22 | 2022-03-18 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
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Legal Events
Date | Code | Title | Description |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: B29C0067000000 Ipc: B29C0064106000 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |