CN108790174A - Waste recycling device for 3D printer - Google Patents
Waste recycling device for 3D printer Download PDFInfo
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- CN108790174A CN108790174A CN201810719866.6A CN201810719866A CN108790174A CN 108790174 A CN108790174 A CN 108790174A CN 201810719866 A CN201810719866 A CN 201810719866A CN 108790174 A CN108790174 A CN 108790174A
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- recovery
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- 239000002699 waste material Substances 0.000 title claims abstract description 78
- 238000004064 recycling Methods 0.000 title claims abstract description 49
- 238000001125 extrusion Methods 0.000 claims abstract description 81
- 238000011084 recovery Methods 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 53
- 239000002775 capsule Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 30
- 239000002826 coolant Substances 0.000 claims description 24
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 238000010146 3D printing Methods 0.000 abstract description 7
- 239000004626 polylactic acid Substances 0.000 description 18
- 229920000747 poly(lactic acid) Polymers 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000002994 raw material Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
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- 230000008569 process Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- -1 that is Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
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- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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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
- 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
- B29C64/30—Auxiliary operations or equipment
- B29C64/357—Recycling
-
- 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
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
The present invention relates to a kind of waste recycling device for 3D printer, the driving unit is arranged in the top in the shell of the device, the middle part setting recovery unit in shell and extrusion unit, and cooling unit is arranged in the lower part in shell；Unit is squeezed out, including：Cone is squeezed out, there is butt inverted cone-shaped structure, be set to inside recovery unit；And extrusion nozzle, it is set to recovery unit exit；Driving unit is bored with the extrusion for squeezing out unit by drive shaft and is connected；Recovery unit, including：Recovery capsule, for holding 3D printer waste material, the lower part of recovery capsule is inverted cone-shaped structure, can be squeezed the waste material in recovery capsule with cone cooperation is squeezed out with realizing；Cooling unit, the material for being squeezed out from the extrusion nozzle.The waste material that the device can generate 3D printing carries out recycling, and materials recycling is converted into silk material, can optimize the extruded velocity and extrusion pressure of silk material, compact-sized, simple, waste recovery is at low cost, efficient.
Description
Technical field
The present invention relates to the waste recycling devices for 3D printer, belong to the field of 3D printing equipment.
Background technology
3D printing is the rapid shaping technique of a kind of " increasing material manufacturing ".In 3D printing, according to computer digit model text
Part constructs various true three dimensional practicalities with successively printing type.
In recent years, desktop grade (or consumer level) 3D printer is also increasingly favored by people, is especially suitble in family, school
Or used in laboratory, this is because desktop grade 3D printer is easy to operate, cost is relatively low.
Currently, the mostly FDM technology that desktop grade 3D printer in the market uses, used material is mainly propylene
Nitrile-butadiene-styrene plastics (ABS) and polylactic acid (PLA).ABS and PLA is generally provided in the form of silk is rolled up.Due to desktop
The print temperature limitation of grade 3D printer, so more with PLA lower than ABS fusing point and more environmentally friendly.But PLA is outstanding
The disadvantage is that cost is higher.
It will produce waste material in 3D printing, such as have printed product and modelling mismatch, raw material surplus, raw material old
Change etc., more commonly printing failure or printing is dissatisfied.There is investigation result to show, the backing material weight that 3D printing is wasted
Account for 10% or so of finished product model weight.Furthermore, it is contemplated that yields and human factor, 15% or more PLA Modeling Materials will
It is wasted.Such serious wasting phenomenon was both uneconomical, also not environmentally, therefore, how efficiently to recycle the waste material of generation
As one of the hot spot studied at present.
About solving the problems, such as the recycling of above-mentioned waste material, it has been proposed that a variety of solutions.
A solution is liquid nitrogen pulverizer.Easy tod produce when common grinder at normal temperatures crushes material compared with
High operating temperature is unfavorable for the crushing and processing of temperature sensitive material.It perfect can be realized to this kind of using liquid nitrogen pulverizer
The pulverization process of material.Moreover, the process that liquid nitrogen crushes material is also relatively more safe and reliable, some are not easy the material crushed
It also becomes prone to crush after liquid nitrogen is added.But manufacture liquid nitrogen is not environmentally and cost is high；Meanwhile this scheme offer
Regeneration feed can only be powder type.Therefore, for especially for desktop grade 3D printer, the poor feasibility of this scheme.
Another solution is single screw rod consumptive material recycle machine.The raw material that the single screw rod consumptive material recycle machine uses is plastics
Grain, by heating and can convert pellet to silk material by screw rod to squeeze.But this recycling machine is expensive, and again
Amount is bigger than normal with volume.
Therefore, it is badly in need of a kind of waste recycling device used suitable for desktop grade 3D printer.
Invention content
For problems of the prior art, the object of the present invention is to provide a kind of waste recoveries for 3D printer
Regenerating unit is provided in particular in a kind of waste recycling device used suitable for desktop grade 3D printer, above-mentioned to solve
The problems such as poor feasibility, the recycling machine mentioned are expensive, weight and volume are bigger than normal.Structure of the invention is compact, simple, convenient for behaviour
Make, waste recovery is at low cost, efficient.Waste recycling device provided by the invention can convert waste material Direct Regeneration
The extruded velocity and extrusion pressure of silk material can be optimized for the structure of silk material form, and apparatus of the present invention.
To achieve the goals above, the present invention is to realize by the following technical solutions：
A kind of waste recycling device for 3D printer, the waste recycling device include：Shell, driving are single
Member, squeezes out unit and cooling unit at recovery unit；Wherein,
The driving unit is arranged in top in the shell, and the recovery unit and institute is arranged in the middle part in the shell
Extrusion unit is stated, the cooling unit is arranged in the lower part in the shell；
The extrusion unit, including：Cone is squeezed out, there is butt inverted cone-shaped structure, be set to inside the recovery unit；With
And extrusion nozzle, it is set to the recovery unit exit；
The driving unit is bored with the extrusion for squeezing out unit by drive shaft and is connected, to drive the extrusion unit
Extrusion cone pump；
The recovery unit, including：Recovery capsule, for holding 3D printer waste material, the lower part of the recovery capsule is back taper
Shape structure can bore cooperation with the extrusion and be squeezed the waste material in the recovery capsule with realizing；
In the operating condition, the driving unit drives the extrusions cone to run down, when the outer wall for squeezing out cone and
When the lower inner wall contact of the recovery capsule, the extrusion cone squeezes the waste material positioned at the recovery capsule lower part, to
The waste material of fusing is squeezed out from the extrusion nozzle；
The cooling unit, for the cooling material squeezed out from the extrusion nozzle, so that the material is frozen into silk material.
In the above-mentioned waste recycling device for 3D printer, the recycling as a preferred implementation manner,
Cabin includes integrally formed two parts up and down, and the top of the recovery capsule is divided into cuboid, the lower part tool of the recovery capsule
There is butt back taper identical with extrusion cone shape.
In the above-mentioned waste recycling device for 3D printer, the recycling as a preferred implementation manner,
The lower part in cabin is divided into butt reverse pyramid, triangular pyramid or conical butt are fallen in butt, and correspondingly, the extrusion cone is butt
Reverse pyramid, butt fall triangular pyramid or conical butt.
In the above-mentioned waste recycling device for 3D printer, the driving as a preferred implementation manner,
The drive shaft of unit and it is described squeeze out cone longitudinal center axis it is coaxial, and it is described squeeze out cone longitudinal center axis with it is described
Extrusion nozzle is coaxial.
In the above-mentioned waste recycling device for 3D printer, the recycling as a preferred implementation manner,
Cabin is provided with heating element, to ensure that the recovery capsule and the extrusion nozzle reach required temperature.
In the above-mentioned waste recycling device for 3D printer, the extrusion as a preferred implementation manner,
Nozzle is cube, and the cube is internally provided with multiple back taper through-holes, and the ejection end aperture of the back taper through-hole is excellent
It is selected as 1.75mm, 2.85mm or 3mm.
In the above-mentioned waste recycling device for 3D printer, as a preferred implementation manner, in the machine
The middle part of shell side wall is equipped with the first heat-sink unit, only starts in overheat.
In the above-mentioned waste recycling device for 3D printer, the cooling as a preferred implementation manner,
Unit includes：Water-cooling head is set to the lower section of the extrusion nozzle, is squeezed out from the extrusion nozzle for receiving and cooling down
Material；And coolant liquid provides equipment, is connect with the water-cooling head, water supply cold head supplies coolant liquid.
In the above-mentioned waste recycling device for 3D printer, the water cooling as a preferred implementation manner,
Head include：The aluminum cube of tape channel and on the aluminum cube bottom surface capillary, wherein the channel is passed through
The cubical two sides of the aluminum are worn, coolant liquid is flowed through from the channel, and the capillary is perpendicular to the channel and from institute
Channel is stated to pass through；
In the above-mentioned waste recycling device for 3D printer, the cooling as a preferred implementation manner,
Liquid provides equipment：Water pump；And arranged with the water for the cooling coolant liquid from the water-cooling head, with entering for the water pump
The mouth of a river connects；It is highly preferred that the water outlet of the water pump is connect by the first hose with the one end in the channel of the water-cooling head, institute
The other end for stating channel is connect by the second hose with the water inlet that the water is arranged, and the water outlet of the water row passes through third hose
It is connect with the water inlet of the water pump.
In the above-mentioned waste recycling device for 3D printer, as a preferred implementation manner, in the machine
The lower part of shell is additionally provided with the second heat-sink unit, radiates for the coolant liquid in being arranged to the water；Preferably, under the casing
Portion is additionally provided with spool, the silk material for squeezing out and solidifying for retracting.
Compared with prior art, the present invention has the advantages that：
The waste material that device provided by the invention can generate 3D printing carries out recycling, can be waste material directly again
Life is converted into silk material form, and the structure of apparatus of the present invention can optimize the extruded velocity and extrusion pressure of silk material, solves
The problems such as poor feasibility, recycling machine are expensive in the prior art, weight and volume are bigger than normal.Apparatus of the present invention are compact-sized, simple
Single, easy to operation, waste recovery is at low cost, efficient.
Description of the drawings
In order to which the feature of the present invention is better shown, the embodiment of the present invention will hereinafter be described in reference to the drawings.Under
Each constituent element in the attached drawing that face is discussed must be drawn in stringent ratio.Each composition member in attached drawing
The size of part can be expanded or shunk, to more clearly illustrate the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is structural schematic diagram of the present invention for water-cooling head in the waste recycling device of 3D printer；
Fig. 2 is the partial perspective stereogram for the waste recycling device of 3D printer according to the present invention, wherein dress
The side plate set has removed, to more clearly illustrate the critical piece on the device top and middle part；
Fig. 3 is the partial perspective stereogram for the waste recycling device of 3D printer according to the present invention, wherein should
The upper part component of device has removed, mainly to show the critical piece of lower part.
Reference numeral is as follows：1- recovery capsules；2- squeezes out cone；3- extrusion nozzles；4- driving units；The first heat-sink units of 5-；
6- water-cooling heads；61- capillaries；The channels 62-；7- water pumps；8- water is arranged；The second heat-sink units of 9-.
Specific implementation mode
Below by conjunction with accompanying drawings and embodiments, technical scheme of the present invention is described in further detail.Illustrating
In book and attached drawing, each system, structure and component are only symbolically described and shown, but might not describe and show practical system
All features of system, structure and component, such as well known function or structure is described in detail, to avoid unnecessary details meeting
Keep the present invention smudgy.It, can many modifications may be made as needed and increase and decrease it should be understood that in practical applications.
Terms used herein should be understood and interpreted that well known to a person skilled in the art meanings to have.For having
The term of particular meaning, will clearly be provided with definition mode in the description it is specifically defined, so as to directly and have no ambiguity
Ground understands.In the whole instruction and claim, word " comprising " should be explained with open meaning, that is, " packet
It includes but is not limited to ".
Here, the principle of the FDM technology used first to desktop grade 3D printer is summarized as follows.Under the control of the computer,
Heating nozzle makees X-Y plane movement according to predetermined prod section profile information, and thermoplasticity silk material is fused into fluidised form in the showerhead, so
After be extruded, selectively coating on the table, thin layer is formed after being quickly cooled down, often molding complete a layer cross section, work
Platform declines along Z axis, then carries out next layer of coating, so moves in circles, ultimately forms three-dimensional objects.
Modeling Material is generally thermoplastic material, and backing material is strippable water-soluble material.Although in such as air pressure
Raw material can be powder type in formula FDM3D printer, but the raw material used in desktop grade 3D printer are mainly with the shape of silk
Formula provides.
As previously mentioned, the most common raw material of desktop grade 3D printer have two kinds of PLA and ABS under FDM technology.ABS is one
There is pungent bad smell after the thermoplastic of kind high intensity, burning or melting.PLA, that is, polylactic acid is that one kind biological can drop
The environment-friendly type plastic of solution, it decomposes to obtain glucose through enzyme, then through lactic acid bacteria using the starch of the extractions such as corn, wheat as raw material
Become lactic acid after equal strain fermentations, then chemical synthesis obtains high-purity PLA.Since PLA is non-toxic and tasteless and renewable, so in table
Utilization rate highest in the grade printer of face.On the other hand, exactly because PLA is easy to degrade, especially ultraviolet light and temperature are compared
Sensitivity, so reclaiming is also more difficult.
Waste recycling device exemplary embodiment of the present invention is described in detail in conjunction with attached drawing, it can be more fully
Understand more aspects, features and advantages of the present invention.
As shown in Figure 1, the waste recycling device of the present invention, including：Frame-type casing, and be set in casing
Driving unit, squeezes out unit and cooling unit at recovery unit.Wherein, the driving unit, institute is arranged in the top in the shell
It states the middle part in shell and the recovery unit and the extrusion unit is set, the lower part setting in the shell is described cooling single
Member；The extrusion unit, including：Cone is squeezed out, there is butt inverted cone-shaped structure, be set to inside the recovery unit；And it squeezes
Delivery nozzle is set to the recovery unit exit；The driving unit is bored by drive shaft and the extrusion for squeezing out unit
Connection, to drive the extrusion cone for squeezing out unit to pump；The recovery unit, including：Recovery capsule, for holding
The lower part of 3D printer waste material, the recovery capsule is inverted cone-shaped structure, and cooperation can be bored with the extrusion to realize to described time
The waste material received in cabin is squeezed；In the operating condition, the driving unit drives the extrusion cone to run down, and is squeezed when described
When the lower inner wall of the outer wall and the recovery capsule that go out cone contacts, extrusion cone to the waste material positioned at the recovery capsule lower part into
Row squeezes, and the waste material to melt is squeezed out from the extrusion nozzle；The cooling unit, for cooling from the extrusion nozzle
The material of extrusion, so that the material is frozen into silk material.
The casing includes the column played a supporting role and the side plate positioned at surrounding.In the casing, upper, middle and lower can be divided
Three parts space, wherein top is driving unit, and unit is squeezed out for driving；Recovery unit is in middle part and is set to recycling
Extrusion unit in unit, recovery unit for containing waste material, squeeze out unit and recovery unit cooperating by converting waste material at
Filamentary material；Lower part is cooling unit (for example being cooled down using recirculated water), for the material that cooling extruded unit squeezes out, is made
The waste material of extrusion is solidified as silk material.It should be noted that it can also be opaque that the side plate of the casing, which can be transparent,.It is shown
Casing substantially rectangular shape, but may be designed in other shapes, such as polyhedron shape.Casing is by heat resistant plastice system
At, such as polyurethane.
Recovery unit comprising recovery capsule 1, the recovered cabin entrance of waste material are put into recovery capsule 1.As shown in Fig. 2, casing
Recovery unit is equipped in central space, recovery capsule 1 is made of integrally formed two parts up and down, and first part (i.e. upper part) is
Cuboid, second part (i.e. lower part) are butt back taper.Although second part as shown in the figure is butt reverse pyramid,
But butt can also be selected to fall triangular pyramid or conical butt.1 entrance of recovery capsule is set in first part, is put into through entrance
Waste material be in second part.The recovery capsule is made of metal, such as stainless steel.1 inner wall of recovery capsule can also coat wear-resisting
Coating, such as ceramic coating.1 capacity of recovery capsule can accommodate at least material of 1kg.Printing waste material can pass through after chopping or crushing
Recovery capsule entrance is put into recovery capsule, or also directly ready-made PLA particles can be put into recovery capsule.In addition, if user thinks
If oneself mixes colours, the waste material of different colours can be put into recovery capsule 1, or colorant can be added.PLA regenerative processes pair
Water content is very sensitive, generally requires moisture to be less than 50PPM, therefore waste material is put into recovery capsule 1 before preferably fully
It is dry.
In addition, PLA regenerative processes are particularly sensitive to temperature, therefore requirement is proposed to the temperature control system of device.The present invention
In, recovery capsule 1 is provided with heating element, to make recovery capsule 1 keep constant temperature.Thermistor, form may be used in heating element
Can be the forms such as silk, pipe, plate, band.For PLA, during the work time temperature can remain at 190-220 DEG C so as to
Fusing.For ABS, temperature can remain at 230-250 DEG C to melt during the work time.Temperature control mode uses
PID controller can have multiple optional temperature-control ranges according to the difference of waste material type.
Extrusion unit is additionally provided in recovery capsule 1.The extrusion unit includes：Cone 2 is squeezed out, in a non-operative state, is squeezed out
Cone 2 is located in the first part of recovery capsule.Extrusion cone 2 is butt inverted cone-shaped structure, is butt reverse pyramid as shown in the figure,
But butt can also be selected to fall triangular pyramid or conical butt.Cone 2 is squeezed out to connect with the motor output shaft of driving unit 4,
It can be moved under the action of driving unit 4 in 1 second part of recovery capsule vertically downwards, and finally and second part
Butt back taper tight fit, with by squeeze will be squeezed out from extrusion nozzle 3 positioned at the waste material of 1 second part of recovery capsule, squeeze out
Cone 2 can pump under the action of driving unit 4；Squeeze out cone 2 this shape and with 1 second part of recovery capsule
The correspondence of tight fit, which can be formed, can optimize extrusion pressure and extruded velocity.Squeezing out cone 2 can be made of metal, such as firmly
Change stainless steel, surface can be smoothed.It is preferably solid to squeeze out cone.
The extrusion unit further includes extrusion nozzle 3, and extrusion nozzle 3 is provided at the outlet of recovery capsule second part bottom end
Place.Driving unit 4 is equipped in the upper space of casing, driving unit 4 can be motor.Cone 2 is squeezed out with motor output shaft to be connected,
Output shaft and the longitudinal center axis for squeezing out cone 2 are coaxial；Also, longitudinal center axis and the extrusion nozzle for squeezing out cone are coaxial, with
Just the conehead of extrusion cone 2 is made to be aligned with extrusion nozzle 3.Extrusion cone 2 is set to move downward by motor, in continuous extrusion recovery capsule
Waste material, waste material in recovery capsule 1 is squeezed to extrusion nozzle.Motor can stepless speed regulation, so as to control as needed squeeze out cone
The speed moved downward.
The ejection end aperture of extrusion nozzle 3 is arranged as required to, and can be 1.75mm, 2.85mm or 3mm.By replacing not
With the extrusion nozzle in ejection end aperture, so that it may the needs of string diameter needed for reaching final.The integral outer structure of extrusion nozzle 3 can be with
For cylinder, square or cuboid etc., the through-hole structure in extrusion nozzle 3 can be thin cylindrical hole, back taper etc., be
It is conveniently adjusted extrusion pressure and avoids the problem that blocking ejection end as possible, the through-hole structure in extrusion nozzle 3 is back taper.Separately
Outside, the through-hole number in extrusion nozzle 3 could be provided as multiple, preferably 2-3.In an embodiment of the present invention, spray is squeezed out
The overall structure of mouth 3 is cube, is made of aluminum or aluminum alloy, is internally provided with two through-holes, the structure of each through-hole is down
The aperture of cone, the tip mouthful of inverted cone is 2.85mm, and through-hole is made of direct punching press.Pass through adding for recovery capsule 1
Thermal element can make extrusion nozzle 3 keep constant temperature during the work time, be higher than the fusing point of waste material used, smoothly to squeeze
Go out the waste material of molten condition.For example, due to needing to solidify immediately after extrusion, the heating temperature of extrusion nozzle can be controlled in molten
Or more 1 DEG C to 2 DEG C.
In addition, in the central space of casing, on casing back side panel with the position of recovery capsule second part face (or
The position with extrusion nozzle face) at be equipped with the first heat-sink unit 5.Turbofan or axis may be used in first heat-sink unit
Flow fan.Unless in the case of system overheat, this heat-sink unit will not generally be opened.
In addition, in regenerative process, if unsuitable crystallizer, the recycling of waste material is also a great problem.For this purpose, this hair
Further include circulating water unit in bright comprising water-cooling head and the coolant liquid being connect with water-cooling head provide equipment, water-cooling head 6
Close to 3 lower section of extrusion nozzle.The water-cooling head 6 includes the aluminum cube of tape channel 62 and on the aluminum cube
The capillary 61 (capillary can be fixed on aluminum cube by welding manner) of bottom surface, wherein channel 62 run through the aluminium
Cubical two sides are made, coolant liquid is flowed through from the channel 62, and capillary 61 is passed through perpendicular to channel 62 and from channel 62.It is described
The material of capillary is fine copper.When the waste material of molten condition enters in capillary 61 and flowed through from after extrusion in extrusion nozzle 3
The coolant liquid in channel 62 cools, and it is solid filament to make its fast cooling immediately, this final thread can be from the capillary 61 of water-cooling head
In pass through.Molten plastics are isolated with coolant liquid while ensureing thermal conductive resin for capillary, to prevent melting dress plastics
Into water-cooling circulating system.
As shown in figure 3, being equipped with coolant liquid in the lower space of casing provides equipment, the channel 62 of water supply cold head supplies
To coolant liquid.It includes water pump 7, the water being connect with 7 water inlet of water pump row 8 and the pipe for realizing water cycle that the coolant liquid, which provides equipment,
Road.Specifically, the water outlet of water pump 7 is connected by the one end in the channel 62 of the first hose and water-cooling head, is carried for water circulation system
For power, increase hydraulic pressure, to supply coolant liquid to water-cooling head.This water pump supports pwm power adjustment, can be automatic according to system load
Adjust system flow rate and hydraulic pressure.The other end in channel 62 is connect by the second hose with the water inlet of water row 8, the water outlet of water row 8
Mouth is connect by third hose with the water inlet of water pump 7, and water row 8 is equivalent to a water cooling equipment, and 8 water coolings after cooling are arranged through water
Liquid is supplied to water-cooling head again through water pump 7.Water row 8 comprising be set to the water nozzle of water inlet, the water pipe being connect with water nozzle (such as
Coil pipe), the condenser (such as cooling fin) etc. that is arranged on the outside of water pipe, can effectively reduce the temperature of the coolant liquid from water-cooling head
Degree supplies coolant liquid with cycle to water-cooling head.The circulating water unit of the present invention is " water-cooling circulating system ", therefore in system
Coolant liquid will not be discharged, without other addition when equipment uses.Water cooling follow the coolant liquid in bad system can be water or
Aqueous solution, aqueous solution have boiling point more higher than water, can absorb more heats, such as brine.
In the lower space of casing, on casing front side board be additionally provided with the second heat dissipation list at the position of 8 face of sink
Member 9.Second heat-sink unit 9 can also use turbofan or aerofoil fan, by accelerating the air circulation speed nearby of water row 8
Degree reduces the coolant temperature in the water row 8 of circulating water unit to accelerate to radiate.This fan supports PWM to adjust, can root
It is realized according to temperature change according to system load adjust automatically rate of heat dispation so as to accurately control rotating speed in adjustable extent
PID control reaches the balance between temperature control and noise.
The present invention can also be equipped with spool (not shown), the silk material squeezed out for retracting in the lower space of casing.
The present invention can also realize the operation and control to waste recycling device by the touch screen being located at outside casing.
The present invention, the PLA regenerated compared with original PLA, in terms of mechanical property (such as tensile yield strength, draw
Stretch modulus, shear yield strength, hardness etc.) decline excessively, some indexs can be even improved, so as to preferably
It reuses.
In the above description, mainly for the waste recycling device suitable for desktop grade 3D printer to the present invention into
Description is gone.But by suitably retrofiting, the present invention may also apply to technical grade 3D printers.
In addition, in the above description, being described mainly for PLA material.But by extrusion nozzle temperature into
Row is appropriate to be adjusted, the present invention may also apply to various engineering plastics, such as ABS, PA, PC, PPSF, PEEK etc., and can also fit
For the other biological plastics in addition to PLA, such as PETG, PCL etc..
It should be noted that in the present specification, specific features, structure, material in each embodiment etc. can be any one
It can be combined in any suitable manner in a or multiple embodiments.
Although describing the present invention with reference to exemplary embodiment, it should be understood that it is public that the present invention is not limited to institutes
The exemplary embodiment opened.The scope of the following claims should be endowed broadest explanation, to cover all modifications and wait
Same structure and function.
Claims (10)
1. a kind of waste recycling device for 3D printer, which is characterized in that the waste recycling device includes：Shell
Body, recovery unit, squeezes out unit and cooling unit at driving unit；Wherein,
The driving unit is arranged in top in the shell, and the middle part in the shell is arranged the recovery unit and described squeezes
Go out unit, the cooling unit is arranged in the lower part in the shell；
The extrusion unit, including：Cone is squeezed out, there is butt inverted cone-shaped structure, be set to inside the recovery unit；And it squeezes
Delivery nozzle is set to the recovery unit exit；
The driving unit is bored with the extrusion for squeezing out unit by drive shaft and is connected, to drive squeezing for the extrusion unit
Go out cone to pump；
The recovery unit, including：Recovery capsule, for holding 3D printer waste material, the lower part of the recovery capsule is back taper knot
Structure can bore cooperation with the extrusion and be squeezed the waste material in the recovery capsule with realizing；
In the operating condition, the driving unit drives the extrusions cone to run down, when it is described squeeze out the outer wall bored with it is described
When the lower inner wall contact of recovery capsule, the extrusion cone squeezes the waste material positioned at the recovery capsule lower part, to melt
The waste material of change is squeezed out from the extrusion nozzle；
The cooling unit, for the cooling material squeezed out from the extrusion nozzle, so that the material is frozen into silk material.
2. the waste recycling device according to claim 1 for 3D printer, which is characterized in that the recovery capsule
It is divided into cuboid including integrally formed two parts, the top of the recovery capsule up and down, the lower part of the recovery capsule has
Butt back taper identical with extrusion cone shape.
3. the waste recycling device according to claim 2 for 3D printer, which is characterized in that the recovery capsule
Lower part be divided into butt reverse pyramid, triangular pyramid or conical butt are fallen in butt, correspondingly, the extrusion cone falls for butt
Pyramid, butt fall triangular pyramid or conical butt.
4. the waste recycling device according to claim 1 for 3D printer, which is characterized in that the driving is single
The drive shaft of member and the longitudinal center axis for squeezing out cone are coaxial, and the longitudinal center axis for squeezing out cone is squeezed with described
Delivery nozzle is coaxial.
5. the waste recycling device according to claim 1 for 3D printer, which is characterized in that the recovery capsule
It is provided with heating element, to ensure that the recovery capsule and the extrusion nozzle reach required temperature.
6. the waste recycling device according to claim 1 for 3D printer, which is characterized in that the extrusion spray
Mouth is cube, and the cube is internally provided with multiple back taper through-holes, and the ejection end aperture of the back taper through-hole is preferred
For 1.75mm, 2.85mm or 3mm.
7. the waste recycling device according to claim 1 for 3D printer, which is characterized in that in the casing
The middle part of side wall is equipped with the first heat-sink unit, only starts in overheat.
8. the waste recycling device according to claim 1 for 3D printer, which is characterized in that described cooling single
Member includes：
Water-cooling head is set to the lower section of the extrusion nozzle, for receiving and cooling down the material squeezed out from the extrusion nozzle；
And
Coolant liquid provides equipment, is connect with the water-cooling head, and water supply cold head supplies coolant liquid.
9. the waste recycling device according to claim 8 for 3D printer, which is characterized in that the water-cooling head
Including：The aluminum cube of tape channel and on the aluminum cube bottom surface capillary, wherein the channel is run through
The cubical two sides of aluminum, coolant liquid are flowed through from the channel, and the capillary is perpendicular to the channel and described in
Channel passes through；
Preferably, the coolant liquid offer equipment includes：Water pump；And with for the cooling coolant liquid from the water-cooling head
Water is arranged, and is connect with the water inlet of the water pump；
It is highly preferred that the water outlet of the water pump is connect by the first hose with the one end in the channel of the water-cooling head, it is described logical
The other end in road is connect by the second hose with the water inlet that the water is arranged, and the water outlet of the water row passes through third hose and institute
State the water inlet connection of water pump.
10. the waste recycling device according to claim 9 for 3D printer, which is characterized in that in the machine
The lower part of shell is additionally provided with the second heat-sink unit, for radiating to the coolant liquid in the sink；
Preferably, it is additionally provided with spool in the lower part of the casing, the silk material for squeezing out and solidifying for retracting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018105508795 | 2018-05-31 | ||
| CN201810550879 | 2018-05-31 |
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| Publication Number | Publication Date |
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| CN108790174A true CN108790174A (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810719866.6A Pending CN108790174A (en) | 2018-05-31 | 2018-07-03 | Waste recycling device for 3D printer |
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| CN111791493A (en) * | 2020-06-29 | 2020-10-20 | 共享智能铸造产业创新中心有限公司 | Liquid material cyclic utilization system for 3D printing apparatus |
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Application publication date: 20181113 |