CN109822884A - Print head and three-dimensional printer - Google Patents
Print head and three-dimensional printer Download PDFInfo
- Publication number
- CN109822884A CN109822884A CN201711179387.1A CN201711179387A CN109822884A CN 109822884 A CN109822884 A CN 109822884A CN 201711179387 A CN201711179387 A CN 201711179387A CN 109822884 A CN109822884 A CN 109822884A
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- Prior art keywords
- heater
- print head
- dimensional printer
- printing nozzle
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Abstract
The present invention relates to a kind of print heads for fusion sediment type rapid molding device, including printing nozzle, heater and feeding device；The discharge port of feeding device is connected to the feed inlet of heater；Wherein, printing nozzle is installed on the print car of three-dimensional printer；Heater is installed in the rack of three-dimensional printer；The discharge port of heater is connected to the feed inlet of printing nozzle by hose, i.e., moulding material in the heating melting room of heater in molten condition is delivered in printing nozzle by hose resistant to high temperature；Feeding pressure device, for providing feeding pressure to the heating melting room of heater.Purpose is to reduce vibration of the printing nozzle of print head in print procedure, raising printer quality.In addition, the present invention also provides a kind of three-dimensional printers comprising above-mentioned print head.
Description
Technical field
The present invention relates to a kind of component of rapid molding device and include the rapid molding device of the component, in particular to one
Three-dimensional printer of the kind for the print head of fusion sediment type rapid molding device and comprising the print head.
Background technique
Three-dimensional printer is a kind of based on mathematical model, using materials such as powdery metal or plastics, by successively printing
The mode equipment that constructs three-dimension object.One of three-dimensional printer is to supply forming material to print head in the form of filament
Material, moulding material are heated to molten condition in print head in a manner of electrically heated, and print head will be according to three-dimensional printer
Three-dimension object is printed in a manner of in layer in the mobile path of the print head opposed substrate that controller generates.
Notification number be the patent document of CN1216726C background technique in describe it is a kind of with filament form to print head
The three-dimensional printer of supply moulding material is wound with filament 013 referring to Fig. 1 on reel 011, by the reel 011 installation to three
In the shaft 012 for tieing up the reel mounting rack of printer, so that the print head that filament 013 is supplied to three-dimensional printer can be realized
015.In use, filament 013 is pulled out from reel 011, passes through the filament being straightened lesser by frictional resistance
Conduit 014 made of material, until filament is supplied to a pair of of the feed roller 0152 driven on print head 015 by motor 0154
And 0153, under the driving of feed roller 0152 and 0153, filament 013 enter heater 0151, filament in heater 0151,
The heated moulding material at molten condition sprays under the action of subsequent filament thrust from the printing for being set to 0151 end of heater
Mouth 01511 is squeezed out and is removably deposited on objective table；The controller of the three-dimensional printer is by control print head 015 in water
Movement in flat X-Y plane, while controlling objective table and being moved in vertical Z-direction, thus in layer print three-dimension object；
In addition, the controller of the three-dimensional printer also controls the speed that feed roller 0152 and 0153 supplies filament to heater 0151
Rate.Since print head 015 is moveable with respect to shaft 012, so conduit 014 is a hose；It is installed on beating on print car
It is integrated with heater 0151, printing nozzle 01511, motor 0154, feed roller 0152 and feed roller 0153 on print head 015,
So the quality of print head is very big and possesses very big inertia, lead to the reduction of its response sensitivity, and hold in speed-change process
Easily cause to shake, leads to printing nozzle continuous earthquake motion in print procedure, ripple, shadow occurs in the surface of the molded part printed
Ring print quality；The rotation of motor 0154 and speed change can also cause the vibration of print head；In addition, the increase of quality can also accelerate to beat
Print the abrasion of contact surface between head and guide rail.
A kind of beating in fusion sediment moulding system is disclosed in the patent document that notification number is CN203381196U
Head assembly is printed, which includes cooling unit, which is a unit comprising fan, and air is generated in fan
Air-flow guidance under, pass through in liquifier pump component and barrel component, the internal component of cooling print head forced, to prevent
Separate and material is made and prematurely melts.Fan is installed on print head, is not merely compriseed the vibroseis of print head vibration, also can
Increase the inertia of print head, to reduce print quality.
Referring to fig. 2, a kind of existing three-dimensional printer, including print head 03, print cartridge, objective table 04 and print cartridge mounting rack
02, print cartridge by carrying filament cassette 021,024 structure of filament cassette 022, filament cassette 023 and filament cassette of different colours filament respectively
At.
Referring to Fig. 3, print head 03 includes printing nozzle, heater, feeding device and cooling device.In order to print polychrome
Target molded part, the heater of print head 03 have heating melting room 0321,0322,0323 and 0324, accordingly with this four
The printing nozzle 0311,0312,0313 and 0314 of the discharge port connection of heating melting room, accordingly with four heating melting rooms
The feeding device 0331,0332,0333 and 0334 of feed inlet connection, is accordingly installed on the matrix of four heating melting rooms
Cooling device 0341,0342,0343 and 0344.In order to realize multi-color printing, the quality of print head is not only increased, also increases and draws
The vibroseis of print head vibration is played, such as send the fan on the driving motor and cooling device on feeding device, to reduce
Print quality.
Summary of the invention
The main object of the present invention is to provide a kind of print head for three-dimensional printer, it is intended in beating for reduction print head
Vibration of the nozzle in print procedure is printed, the print quality of three-dimensional printer is improved.
It is a further object of the present invention to provide a kind of three-dimensional printers comprising above-mentioned print head.
In order to achieve the above-mentioned main objectives, include printing nozzle the present invention is provided to the print head of three-dimensional printer, add
Hot device and feeding device；The discharge port of feeding device is connected to the feed inlet of heater；Wherein, printing nozzle is installed on three-dimensional beat
On the print car of print machine；Heater is installed in the rack of three-dimensional printer；The charging of the discharge port and printing nozzle of heater
Mouth is connected to by hose, i.e., the moulding material that will in the heating melting room of heater be in molten condition by hose resistant to high temperature is defeated
It send into printing nozzle；Feeding pressure device, for providing feeding pressure to the heating melting room of heater.
As can be seen from the above scheme, it in print procedure, is sprayed with the only printing that the print car of three-dimensional printer moves
Mouth reduces the quality of motion parts, and compared with prior art, response sensitivity is improved, and meets flying print requirement,
And the vibration of the printing nozzle due to caused by speed change is reduced, the vibroseis on print head is effectively isolated to the shadow of printing nozzle
It rings, reduces vibration of the printing nozzle in print procedure, print position is more accurate, improves the printing matter of three-dimensional printer
Amount, the three-dimensional printer printed together particularly suitable for multiple printing nozzles；Print car can also be efficiently reduced to connect with guide rail
Abrasion between contacting surface；It will be in the moulding material of molten condition from then passing through feeding pressure device to heating melting room offer pressure
Squeeze out heating melting room, the control being more convenient for extruded velocity, the mobility that can effectively cope with moulding material is different and shadow
Ring the problem of being fed to printing nozzle.In addition, feeding device is installed in the rack of three-dimensional printer, for filament form to
Print head supplies the three-dimensional printer of forming material, and the feed inlet of feeding device can be set to the feeding device of three-dimensional printer
Near discharge port, compared with prior art, it is not necessary that the filament in feeding device is guided to print head with the conduit of less friction；
Granular or powdered molding material three-dimensional printer is provided to print head for hopper, the feed inlet of feeding device can be set
Near the discharge port of hopper, compared with prior art, it is connected to without using conduit or hopper is set on print car.
One specific scheme is that the print head further includes negative pressure device, for providing to the heating melting room of heater
Negative pressure.After the printing for completing target molded part, it is molten to the heating of heater that the controller of three-dimensional printer controls negative pressure device
Melt room provide negative pressure, moulding material remaining in hose and printing nozzle is sucked back in heating melting room, prevent blocking hose and
Printing nozzle influences subsequent printing.
Another specific scheme is that the print head further includes cooling device, for regulating and controlling heater and feeding device
Temperature.The temperature for regulating and controlling heater by cooling device keeps the temperature of the moulding material squeezed out from the discharge port of heater uniform,
Guarantee the print quality of target molded part；The temperature for controlling feeding device can prevent moulding material to be heated in feeding device
Melt and block the discharge port of feeding device.
More specific scheme is that hose has one layer of heat preservation layer, it can is that one layer is wrapped up outside hose without heating function
Insulating layer, be also possible to insulating layer of one layer of the package with heating function, can also be that hose itself has heat preservation and/fever
Function.It can be effectively prevented and freeze in hose in the moulding material of molten condition, block hose；It can especially effectively
The variation of ground reply hose ambient temperature.
To realize above-mentioned another object, three-dimensional printer provided by the invention includes rack, controller, feeding device and beats
Print head；Print head includes printing nozzle, heater and feeding device, and the discharge port of feeding device and the feed inlet of heater connect
It is logical；The print car being controlled by the controller is moveably mounted in rack；Feeding device is used to provide forming material to feeding device
Material；Wherein, printing nozzle is installed on print car；Heater is installed in rack；The discharge port of heater and printing nozzle
Feed inlet is connected to by hose；Feeding pressure device, for providing feeding pressure to the heating melting room of heater.
As can be seen from the above scheme, in print procedure, the only printing nozzle moved with print car reduces movement
Partial quality, compared with prior art, response sensitivity is improved, and meets flying print demand, and reduce due to becoming
The vibration of printing nozzle caused by speed is effectively isolated influence of the vibroseis on print head to printing nozzle, reduces printing spray
Vibration of the mouth in print procedure, print position is more accurate, improves print quality；Print car can also be efficiently reduced and led
Abrasion between rail contact surface；It will be in the molding of molten condition from then passing through feeding pressure device to heating melting room offer pressure
Material squeezes out heating melting room, and the control being more convenient for extruded velocity can effectively cope with different moulding material mobility not
The problem of being fed to printing nozzle is influenced together.
One specific scheme is above-mentioned three-dimensional printer also packet negative pressure device, for the heating melting room of heater
Negative pressure is provided.
Another specific scheme is that above-mentioned three-dimensional printer further includes cooling device, for regulating and controlling heater and charging
The temperature of device.
One more specific scheme is that hose has one layer of heat preservation layer, it can is that one layer is wrapped up outside hose without fever
The insulating layer of function is also possible to insulating layer of one layer of the package with heating function, can also be hose itself have heat preservation and/
Heating function.
Another more specific scheme is that the discharge port of feeding device is set near the feed inlet of feeding device.It can be real
Existing feeding device directly provides moulding material to feeding device, both connects without using conduit, compared with prior art, can be with
More effectively moulding material is supplied to print head.
Another more specific scheme is, controller is according to the temperature of moulding material in the hose and printing nozzle detected
Regulate and control the indoor temperature of heating melting, that is, regulates and controls the temperature of the moulding material squeezed out from the discharge port of heater.Make to spray from printing
The variation that the temperature for the moulding material that mouth squeezes out keeps the quality for uniformly guaranteeing target molded part and successfully manages printing environment.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of existing three-dimensional printer；
Fig. 2 is the structure chart of another existing three-dimensional printer；
Fig. 3 is the structural schematic diagram of the print head of three-dimensional printer in Fig. 2；
Fig. 4 is the structural schematic diagram of print head first embodiment of the present invention；
Fig. 5 is the structural schematic diagram of print head second embodiment of the present invention；
Fig. 6 is A partial enlarged view in Fig. 5.
The invention will be further described with reference to the accompanying drawings and embodiments.
Specific embodiment
Print head first embodiment
Referring to fig. 4, print head is by printing nozzle 1, hose 2, heater 3, feeding device 4, cooling device 5 and feed pressure device
6 are constituted.The discharge port of heater 3 is connected to the feed inlet of printing nozzle 1 by hose 2, and hose 2 is heat-resistant light hose,
Moulding material for being heated to molten condition in the heating melting room 31 by heater 3 imports in printing nozzle 1；Charging dress
Setting 4, there is a pair of of feed roller near the feed inlet of heater 3 to be used under the control of 3 D-printing machine controller
Filament on three-dimensional printer filament cassette is sent into heating melting room 31 with given pace；Cooling device 5 has a fan 51,
The air-flow that the rotation of fan 51 generates is protected for regulating and controlling to heater 3 and heater 3 and the temperature of 4 junction of feeding device
Card enter hose 2 in moulding material temperature it is uniform, improve printing effect, can also prevent moulding material heater 3 with
4 junction melted by heating of feeding device and influence to feed；Feed pressure device 6 is used to provide certain gas for heating melting room 31
Moulding material in a molten state in heating melting room 31 is pressed into hose 2 by pressure, and is sprayed from the outlet of printing nozzle 1
And realize printing, moulding material can be efficiently controlled by the air pressure in control heating melting room 31 and sprayed in hose 2 and printing
Flowing velocity in mouth 1 can effectively cope with the different moulding material of mobility；Printing nozzle 1 is equipped with for that will print
Nozzle 1 is installed on the mounting plate 11 on the print car of three-dimensional printer.
Print head second embodiment
As the explanation to print head second embodiment of the present invention, below only to it is different from above-mentioned print head first embodiment it
Place is illustrated.
It is the printing nozzle of this example print head, hose, the heating melting room of heater, feeding device, cold referring to Fig. 5 and Fig. 6
But the quantity of device and feed pressure device is four, respectively printing nozzle 211,212,213 and 214, hose 221,
222,223 and 224, the heating melting room 231,232,233 and 234 of heater, feeding device 241,242,243 and 244, cooling
Device 251,252,253 and 254 and feed pressure device 261,262,263 and 264；Four printing nozzles pass through mounting plate
2111 are installed on the print car of three-dimensional printer, are respectively used to the moulding material of three kinds of primary colours of printing and black；Hose 221,
222,223 printing nozzle and heater are connect in the form of comb with 224.
Print head 3rd embodiment
As the explanation to third embodiment of the invention, only carried out below to the difference of above-mentioned print head first embodiment
Illustrate, be additionally provided with negative pressure device on this example print head, for providing negative pressure for the heating melting room of heater, complete target at
After the printing of type part, the moulding material in printing nozzle and hose is sucked back in heating melting room, effectively prevent remaining forming material
Material is condensed in hose and printing nozzle, hinders subsequent printing.
Print head fourth embodiment
As the explanation to fourth embodiment of the invention, only carried out below to the difference of above-mentioned print head first embodiment
Illustrate, one layer of insulating layer without heating function is also cased with outside hose, particularly suitable for the longer print head of hose length, prevents
Only moulding material in hose cooled and solidified and block hose.
The 5th embodiment of print head
As the explanation to the 5th embodiment of print head of the present invention, below only to it is different from above-mentioned print head fourth embodiment it
Place is illustrated, and insulating layer is one layer of heat preservation layer being controlled by the controller.
Three-dimensional printer first embodiment
Three-dimensional printer is made of rack, print car, feeding device, controller and print head；Print head and above-mentioned print head the
One embodiment is identical, printing nozzle is installed on print car by the mounting plate of printing nozzle, heater is installed in rack；
Print car is movably disposed on the guide rail of rack, printing nozzle with print car mobile realization with respect to objective table movement；For
Expect that device is the filament cassette being installed on the filament cassette mounting rack of rack, is provided in the form of filament to the feeding device of print head
Moulding material；The feed inlet of the feeding device of print head is set near the discharge port of filament cassette.
In print procedure, filament in filament cassette is pulled out, is driven by motor until filament is supplied on feeding device
A pair of of feed roller, controller by control motor revolving speed to control feeding device to the heating melting room of heater supply
To the rate of filament；Controller controls heater and heats to the indoor filament of heating melting, when filament is heated to molten condition
When, i.e., the temperature of moulding material is heated to the temperature higher than the freezing point of moulding material, controller controls feed pressure device
Apply certain pressure to heating melting room, hose is passed through with certain rate in the moulding material of molten condition and reaches printing spray
Mouth, and printing nozzle is sprayed with given pace under the effect of the pressure；Controller controls the movement of print car opposite rail, thus
It realizes that printing nozzle is moved with respect to objective table by predetermined design path, prints target molded part；It completes to target molded part
Printing after, controller controls the range that printing nozzle is removed target molded part by print car, and controls feed pressure device
High pressure is provided to heating melting room, the moulding material in hose and printing nozzle is squeezed out into hose and printing nozzle, prevents this
A little moulding materials are condensed in hose and printing nozzle, hinder printing next time.
Three-dimensional printer second embodiment
As the explanation to three-dimensional printer second embodiment of the present invention, below only to above-mentioned three-dimensional printer first embodiment
Difference be illustrated, wherein print head is the print head in above-mentioned print head second embodiment, rather than above-mentioned printing
Print head in head first embodiment.
In print procedure, controller controls the print head of different colours according to the design requirement of target molded part respectively
The different colours part for carrying out printing target molded part, to realize the printing of polychrome target molded part.
Three-dimensional printer 3rd embodiment
As the explanation to three-dimensional printer 3rd embodiment of the present invention, below only to above-mentioned three-dimensional printer first embodiment
Difference be illustrated.
It is additionally provided with negative pressure device on the print head of this example three-dimensional printer, is provided for the heating melting room for heater negative
Pressure, the moulding material in printing nozzle and hose is sucked back in heating melting room.
In print procedure, after the printing for completing target molded part, controller closes feed pressure device, opens negative
Moulding material remaining in hose and printing nozzle is sucked back heating melting room, remaining moulding material is prevented to be condensed in by pressure device
In hose and printing nozzle, printing next time is influenced.
Three-dimensional printer fourth embodiment
As the explanation to three-dimensional printer fourth embodiment of the present invention, below only to above-mentioned three-dimensional printer first embodiment
Difference be illustrated, one layer of insulating layer without heating function is also cased with outside hose.
The 5th embodiment of three-dimensional printer
As the explanation to the 5th embodiment of three-dimensional printer of the present invention, below only to above-mentioned three-dimensional printer fourth embodiment
Difference be illustrated, insulating layer be one layer of heat preservation layer being controlled by the controller.
Three-dimensional printer sixth embodiment
As the explanation to three-dimensional printer sixth embodiment of the present invention, below only to above-mentioned three-dimensional printer sixth embodiment
Difference be illustrated, wherein feeding device be not in the form of silk to print head provide moulding material filament cassette, and
It is to provide the hopper of moulding material to print head with granular or powder type.
Design of the invention mainly by the way that the printing nozzle of print head is installed on the print car of three-dimensional printer, with
Print car moves together, and the other parts of print head are installed in the rack of three-dimensional printer, the heater of print head and beats
It is connected between print nozzle by hose, reduces the quality of motion parts, and then improve the response sensitivity of print car, reduced printing and spray
Vibration of the mouth in print procedure improves print quality；According to this design, the structure of print head is fed mode and control mode
Also there are many obvious variations.
Claims (6)
1. print head is used for three-dimensional printer, including printing nozzle, heater and feeding device；
The discharge port of the feeding device is connected to the feed inlet of the heater；
It is characterized by:
The printing nozzle is installed on the print car of the three-dimensional printer；
The heater is installed in the rack of the three-dimensional printer；
The discharge port of the heater is connected to the feed inlet of the printing nozzle by hose；
Feeding pressure device, for providing feeding air pressure to the heating melting room of the heater.
2. print head according to claim 1, it is characterised in that: further include negative pressure device, be used for the heating melting room
Negative pressure is provided.
3. print head according to claim 1, it is characterised in that: further include cooling device, for regulate and control the heater and
The temperature of the feeding device.
4. print head according to any one of the claim 1 to 3, it is characterised in that: the hose has one layer of heat preservation layer.
5. three-dimensional printer, including rack, controller, feeding device and print head；
The print head includes printing nozzle, heater and feeding device, the discharge port of the feeding device and the heater
Feed inlet connection；
The print car controlled by the controller is moveably mounted in the rack；
The feeding device is used to provide moulding material to the feeding device；
The printing nozzle is installed on the print car；
The heater is installed in the rack.
6. three-dimensional printer according to claim 5, it is characterised in that: the controller is according to the hose and the printing
The temperature of moulding material regulates and controls the indoor temperature of heating melting in nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179387.1A CN109822884A (en) | 2017-11-23 | 2017-11-23 | Print head and three-dimensional printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179387.1A CN109822884A (en) | 2017-11-23 | 2017-11-23 | Print head and three-dimensional printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109822884A true CN109822884A (en) | 2019-05-31 |
Family
ID=66858346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711179387.1A Pending CN109822884A (en) | 2017-11-23 | 2017-11-23 | Print head and three-dimensional printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109822884A (en) |
-
2017
- 2017-11-23 CN CN201711179387.1A patent/CN109822884A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190531 |