The control mechanism of synchronous high-precision control 3D printer nozzle exitIt is on 07 01st, 2017 the applying date that the present invention, which is, application No. is：2017105289257, entitled " printingThe divisional application of the patent of invention of the whole 3D printer nozzle of variable area ".
Technical field
The present invention relates to a kind of 3D printer, more particularly to a kind of 3D printer of adjust automatically shower nozzle caliber size.
Background technology
Existing 3D printer carries out the printing of object module, the shape of various object modules using single nozzle working methodThe difference of shape and size, since the cross sectional shape fixation of single nozzle can not be adjusted, it is impossible to according to the shape of object moduleOr size is adaptively adjusted；For example, during printing flat sheet, printing can significantly be improved by the bore for increasing nozzleEfficiency, the melting consumable quantity that existing fixed bore nozzle sprays is relatively fewer, such as can be notable according to the nozzle of larger caliberThe reduction time-write interval；When printing delicate part or size small parts, the bore of nozzle crosses conference and seriously affects target mouldThe precision of type can only use the smaller nozzle of sectional dimension.
Invention content
To solve the deficiencies in the prior art, the object of the present invention is to provide it is a kind of can be according to the shape and ruler of object moduleThe 3D printer of little progress row nozzle sectional dimension adjustment, while improving printing effect, shorten the time-write interval, it can also be ensured that 3DThe printing precision of printer.
To realize above-mentioned technical purpose, the technical solution adopted in the present invention is as follows.
The control mechanism of synchronous high-precision control 3D printer nozzle exit, including head body, supporter, stirs machineStructure, head body are fixedly installed on supporter, power supply device are also equipped on supporter, and control mechanism further includes two pointsIt is not slideably positioned in the slide plate of head body side, two slide plates are arranged to flex outward relative to head body center lineAnd narrowed relative to nozzle center line to center, it, can when two slide plates switch between extended configuration and contraction stateAdjust the material spray end section shape or size of head body；The power output end of toggle mechanism is connected to slide plate, and provides cunningThe power that piece switches between extended configuration and contraction state；
The toggle mechanism includes being installed on supporter and can respectively cutting with scissors around the plectrum of own axis, the both ends of plectrumIt connects there are one driving lever, the other end of two driving levers is hingedly connected to be installed on supporter and can be around the guiding of own axisOne end of piece, plectrum, guide pin, two driving levers form four-bar mechanism, and two driving levers are mutually parallel；Plectrum is connected to powerThe power output end of feeding mechanism, guide pin are socketed on the outside of head body, the power that power supply device is provided to plectrumFor driving plectrum that beat occurs along clockwise direction and in the counterclockwise direction；
The end side that slide plate deviates head body center line is provided with the reversed column arranged in vertical direction, and the both sides of guide pin are set respectivelyThe circular arc guide groove to match with reversed column is equipped with, and a pair of of circular arc guide groove can push guide direction of a pair of of slide plate along open slotThe synchronous direction towards head body center line or deviation head body center line moves.
Above-mentioned technical proposal is further improved.
The poly- material chamber for assembling molten condition consumptive material is provided in head body, slide plate includes the level being connected with each otherSection, vertical section, the opening direction formed between horizontal segment and vertical section deviate from the center line of head body, two slide plates it is perpendicularStraight section forms spray material port, the horizontal segment and head body of two slide plates towards the interval between the end face of the center line of head bodyInner wall sliding contact, the consumptive material of molten condition is injected into poly- material chamber and squeezed out by spray material port；
Slide plate further includes inclination linkage section, tilt linkage section be set between horizontal segment, vertical section and for connect horizontal segment,Vertical section, two slide plates tilt linkage section towards between the end face of the center line of head body interval, head body inner wallBetween enclose the remittance material chamber connected with spray material port, the consumptive material of molten condition is injected into remittance material intracavitary and is squeezed out by spray material port；
When two slide plates are in contraction state, the side of vertical section towards the head body center line of two slide plates fits closely,And spray material port is caused to be in closed state, and converge and expect that chamber forms closed space.
Above-mentioned technical proposal is further improved.
The annular groove a for installing plectrum is provided on above-mentioned supporter, is additionally provided on supporter and is oriented to for installingThe annular groove b of piece, annular groove a are conllinear with the rotation center of plectrum, and annular groove b is conllinear with the rotation center of guide pin, and above-mentioned power suppliesAnswer device power output end be connected to it is at the center of plectrum and conllinear with the rotation center of plectrum；
Above-mentioned technical proposal is further improved.
It is additionally provided on supporter and connects annular groove a inner cavities, annular groove b inner cavities and the groove passed through for driving lever；
Above-mentioned technical proposal is further improved.
The centre bore for passing through for linkage section and matching with head body outer wall, ring are provided at the center of annular groove bIt is additionally provided on slot b and is located at centre bore both sides and the locating notch connected with centre bore respectively, two locating notches are along centerThe line of the radial distribution in hole and two locating notch center lines and annular groove a centers, the line at annular groove b centers are perpendicular, ringThe guiding notch positioned at centre bore both sides and on the outside of locating notch is additionally provided on slot b, is oriented to notch and locating notchIt connects and is oriented to the center line of notch and the centerline collineation of locating notch, head body is provided with to match with locating notchProtruding block, slide plate matches with being oriented to notch and along radial motion of the guide direction along centre bore for being oriented to notch.
Above-mentioned technical proposal is further improved.
The open slot that the both sides of head body are respectively arranged with one and poly- material chamber is connected, and two open slots aboutHead body center line is arranged symmetrically, and is respectively arranged at the slide plate of head body side and open slot shiding matching, two slide platesIt can be flexed outward in sliding process relative to head body center line in open slot and relative to nozzle center line to centerIt narrows.
Above-mentioned technical proposal is further improved.
It is provided with and is matched with slide plate and for being oriented to the guide groove that slide plate is slided in the horizontal direction, slide plate in open slotOn be provided with the guide pad to match with guide groove.
Above-mentioned technical proposal is further improved.
The shape of above-mentioned guide groove is right-angled trapezium, and the shape of guide pad is the right-angled trapezium to match with guide groove, slide plateUpper surface and open slot upper inner wall shiding matching, and the height side of right-angled trapezium is in horizontally disposed and for being oriented to slide plateMovement in the horizontal direction.
Above-mentioned technical proposal is further improved.
The pin positioned at open slot is also equipped in head body, the sliding slot to match with pin is additionally provided on slide plate,When slide plate is flexed outward relative to head body center line, and guide groove is with guide pad and disengaging, pin is matched with sliding slot,And pin can constrain slide plate and continue to flex outward when being contacted with the slot bottom of sliding slot.
The progress and the advantage is that two slide plates can phase under the driving of external force that the present invention obtains compared with prior artHead body center line is flexed outward or is shunk to head body center line, slide plate is during movementThe bore of 3D printer nozzle material spray end realizes the size adjustable in printing section, and printing section phase is fixed with existing nozzleThan, it, can be by improved efficiency several times when printing flat sheet, and technology provided by the invention can also further reduce and beatSection is printed, carries out the printing of higher precision.
Description of the drawings
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply belowIt introduces, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ordinary skill peopleFor member, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram of the present invention.
Fig. 3 is the structure diagram for melting mechanism.
The structure diagram that Fig. 4 is power supply device, nozzle component, toggle mechanism match.
Fig. 5 is the structure diagram that toggle mechanism matches with supporter.
Fig. 6 is the structure diagram of supporter.
Fig. 7 is the structure diagram of supporter.
Fig. 8 is the structure diagram that toggle mechanism matches with supporter, nozzle component.
Fig. 9 is the structure diagram of toggle mechanism.
Figure 10 is the structure diagram of toggle mechanism.
Figure 11 is the structure diagram that nozzle component is in maximum open state.
Figure 12 is the structure diagram that nozzle component is in middle opening state.
Figure 13 is the structure diagram that nozzle component is in minimal openings state.
Figure 14 is the structure diagram of head body.
Figure 15 is the structure diagram of slide plate.
It is denoted as in figure：
10th, mechanism is melted；110th, heating element；120th, relief hole；
20th, sleeve；
30th, power supply device；
40th, nozzle component；410th, head body；410a, linkage section；410b, poly- material chamber；410c, spray material port；410d, guide groove；420th, slide plate；420a, draw material groove；420b, reversed column；420c, guide pad；420d, sliding slot；430th, pin；
50th, toggle mechanism；510th, plectrum；520th, driving lever；530th, guide pin；530a, crossover port；530b, guide groove；
60th, supporter；610th, annular groove a；620th, annular groove b；630th, groove；640th, centre bore；650th, locating notch；660th, it is oriented to and lacksMouthful.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, completeGround describes, it is clear that described embodiment is only part of the embodiment rather than whole embodiments of the present invention.Based on this hairEmbodiment in bright, those of ordinary skill in the art without making creative work, the every other reality obtainedExample is applied, belongs to the scope of the present invention.
Referring to attached drawing 1-4, the adjustable 3D printer nozzle of bore including supporter 60, is equipped with molten on supporter 60Melt mechanism 10, power supply device 30, nozzle component 40, melting mechanism 10 is used to pour into molten condition into nozzle component 40Consumptive material is additionally provided with toggle mechanism 50 between power supply device 30 and nozzle component 40, power supply device 30 is with stirring machineThe power intake connection of structure 50, the power output end of toggle mechanism 50 connect with nozzle component 40 and can adjust nozzle component40 material spray end section shape or size；Nozzle component 40 is realized by the power that power supply device 30 provides in the present inventionMaterial spray end section shape or size adjust automatically, so as to adapt to the printing needs of different target model, improve the effect of printingRate shortens the time of printing.
Above-mentioned nozzle component 40, including head body 410, head body 410 is fixedly installed on supporter 60, nozzleThe poly- material chamber 410b for assembling molten condition consumptive material is provided in ontology 410, above-mentioned melting mechanism 10 can be to poly- material chamberThe consumptive material of injection molten condition in the 410b of room；Nozzle component 40 further includes the slide plate for being slideably positioned in 410 side of head body420, slide plate 420 be arranged to flex outward relative to 410 center line of head body and relative to 410 center line of nozzle toCenter is narrowed, and the power output end of toggle mechanism 50 is connected to slide plate 420, and provides slide plate 420 in extended configuration and contraction-likeThe power switched between state；When slide plate 420 switches between extended configuration and contraction state, head body can adjust410 material spray end section shape or size.It is single slide sheet type structure that this kind of scheme, which uses,（It is not shown in the drawings specificStructure）, using this kind of structure, slide plate 420 during being subjected to displacement, will cause head body 410 nozzle end center it is inclinedFrom to offset the error of center deviation, the control system of 3D printer being needed to adjust 3D printer nozzle and carries out corresponding deviate simultaneouslyThe error is offset, can be without adjustment certainly in the case where object module required precision is not high, such as carry out food modelPrinting, is simply ignored the error.
Referring to attached drawing 11-15, above-mentioned slide plate 420 is two and is slideably positioned in 410 side of head body respectively, twoA slide plate 420 is arranged to flex outward relative to 410 center line of head body and relative to 410 center line of nozzle inThe heart narrows；The power output end of toggle mechanism 50 is connected to two slide plates 420, and provide two slide plates 420 in extended configuration andThe power switched between contraction state；It is adjustable when two slide plates 420 switch between extended configuration and contraction stateThe material spray end section shape or size of whole head body 410.
More perfectly, two above-mentioned slide plates 420 are symmetrically disposed on 410 side of head body, and two 420 phases of slide plate410 center line locking of head body is flexed outward and is narrowed relative to 410 center line locking of nozzle to center.This kind of sideIt is double slide sheet type structure that case, which uses, be the advantage is that, two slide plates flex outward and synchronize what is narrowed to center synchronizingIn the process, it is always ensured that the nozzle end center of head body 410 is constant, does not need to control system adjustment 3D printer nozzleCarry out error concealment, the printing especially suitable for high-precision object module.It is divided into when between the nozzle end formed between two slide platesDuring the three times in conventional injection head section, structure using the present invention can improve the efficiency of three times, and only need consumption 1/3rdTime-write interval, the problem of overcoming current 3D printer time-consuming, and difficulty is readily accepted by customers.
Referring to attached drawing 11-15, the both sides of head body 410 are respectively arranged with an opening connected with poly- material chamber 410bSlot, and two open slots are arranged symmetrically about 410 center line of head body, are respectively arranged at the cunning of 410 side of head bodyPiece 420 and open slot shiding matching, two slide plates 420 can be relative to 410 center of head body in sliding process in open slotLine is flexed outward and is narrowed relative to 410 center line of nozzle to center；It is provided in open slot and matches and use with slide plate 420It is led in being provided on the guide groove 410d that guiding slide plate 420 is slided in the horizontal direction, slide plate 420 with what guide groove 410d matchedTo block 420c.
More perfectly, referring to attached drawing 14,15, the shape of above-mentioned guide groove 410d is right-angled trapezium, guide pad 420c'sShape is the right-angled trapezium to match with guide groove 410d, the upper surface of slide plate and the upper inner wall shiding matching of open slot, and right angleTrapezoidal height side is in horizontally disposed and for being oriented to the movement of slide plate 420 in the horizontal direction.
More perfectly, referring to attached drawing 14,15, the pin 430 positioned at open slot is also equipped in head body 410, it is slidingThe sliding slot 420d to match with pin 430 is additionally provided on piece 420, when slide plate 420 is outside relative to 410 center line of head bodyStretching, extension, and when guide groove 410d and guide pad 420c and disengaging, pin 430 is matched with sliding slot 420d, and pin 430 and sliding slotDuring the slot bottom contact of 420d, slide plate 420 can be constrained and continue to flex outward.
Referring to attached drawing 11-15, slide plate 420 includes horizontal segment, vertical section, tilts linkage section, tilts linkage section and is set to waterBetween flat section, vertical section and for connecting horizontal segment, vertical section, the opening direction formed between horizontal segment and vertical section deviatesIn the center line of head body 410, the vertical section of two slide plates 420 is towards between the end face of the center line of head body 410Interval forms spray material port 410c, and the inclination linkage section of two slide plates 420 is towards between the end face of the center line of head body 410The remittance material chamber connected with spray material port 410c is enclosed between interval, 410 inner wall of head body, melts mechanism 10 by molten conditionConsumptive material is injected into remittance material intracavitary and is squeezed out by spray material port 410c；When two slide plates 420 are stretched outward, the mouth of spray material port 410cThe increase of diameter gradually；When two slide plates 420 are to 410 central reduction of head body, the diminution of the bore of spray material port 410c gradually.
More perfectly, when two slide plates 420 are in contraction state, the vertical sections of two slide plates 420 is towards head bodyThe side of 410 center lines fits closely, and spray material port 410c is caused to be in closed state, and converges and expect that chamber forms closed space；Its purpose to be realized and the advantage is that existing 3D printer nozzle when being moved by a relatively large margin, 3D printerNozzle has the exudation of molten consumptive material, so will appear wire drawing phenomenon, chief reason or nozzle cannot be sealed effectivelyIt is stifled；The enclosed construction used in the present invention can effectively carry out the closure of 3D printer nozzle, will not generate wire drawing and showAs.
More specifically, referring to attached drawing 11-15, the vertical section of slide plate 420 is towards on the side of 410 center line of head bodyOffer and draw material groove in what vertical direction was arranged；Preferably, when two slide plates 420 are in contraction state, two are set toThe material groove that draws in 420 vertical section of slide plate encloses a section as circular spray material port 410c；Its purpose to be realized withAnd the advantage is that two to draw the sections that material groove is formed be circular spray material port 410c is minimum size, be adapted to heightThe printing of the object module of precision overcomes spray material port 410c oversized, it is impossible to the problem of adapting to the printing of high-precision object.
More perfectly, referring to attached drawing 11-13, interval between the tilting section of two slide plates 420 in the vertical direction fromIncrease on down gradually, and be provided with to extend along direction and be provided on tilting section and draw material groove 420；It is it is intended that sharpWith being spaced the infundibulate chamber of composition between two tilting sections convenient for poly- material, when spray material port 410c is when stretch larger space, leakBucket shape chamber can further ensure that molten consumptive material is filled up completely in spray material port 410c, can avoiding generating bubble or tomography.
More specifically, referring to attached drawing 11-14, be additionally provided in head body 410 connected with poly- material chamber 410b andFor injecting the linkage section 410a of molten consumptive material into poly- material chamber 410b, linkage section 410a is connected to the row of melting mechanism 10Expect end.
More preferably, above-mentioned linkage section 410a is arranged with 410 coaxial line of head body, head body 410 and linkage sectionThe junction of 410a exhaust ends be equipped with cone tank, vertical direction from bottom to top cone tank lateral separation gradually narrow；ItsPurpose is that the interval incrementally increased from bottom to top in the vertical direction between cone tank and the tilting section of two slide plates is oppositeShould, in order to preferably carry out the spray material port 410c under extended configuration the filling of molten consumptive material, avoid generating dead angle.
Referring to attached drawing 8-10, above-mentioned toggle mechanism 50 includes being installed on supporter 60 and can be around own axisPlectrum 510, the both ends of plectrum 510 are respectively articulated with there are one driving lever 520, and the other end of two driving levers 520 is hingedly connected to installIn supporter 60 and can be around one end of the guide pin 530 of own axis, 530, two plectrum 510, guide pin driving levers 520Four-bar mechanism is formed, and two driving levers 520 are mutually parallel；Plectrum 510 is connected to the power output end of power supply device 30,Guide pin 530 is socketed on the outside of head body 410, and the power that power supply device 30 is provided to plectrum 510 is dialled for drivingBeat occurs along clockwise direction and in the counterclockwise direction for piece 510；More preferably, be provided at the center of head body 410 withThe crossover port 530a that 410 outer wall of head body matches.When power supply device 30 drive plectrum 510 occur it is clockwise or inverseDuring hour hands beat, by two driving levers 520 into action edge transmission, it can be achieved that the synchronization beat of guide pin 530.
Referring to attached drawing 8-13, the end side that slide plate 420 deviates 410 center line of head body is provided with what is arranged in vertical directionReversed column 420b is provided with the circular arc guide groove 530b to match with reversed column 420b, and guide groove 530b and reversed column on guide pin 530The matching of 420b can push slide plate 420 along the guide direction of open slot towards 410 center line of head body or deviate nozzle sheetThe direction movement of 410 center line of body.
More optimally, the both sides of guide pin 530 are respectively arranged with the circular arc guide groove 530b to match with reversed column 420b,And a pair of the circular arc guide groove 530b guide directions that can push a pair of of slide plate 420 along open slot synchronize towards head body 410The direction of center line or deviation 410 center line of head body moves.When guide pin 530 occurs clockwise around own axesOr when deflecting counterclockwise, utilize the circular arc guide groove 530b's and reversed column 420b for being set to guide pin 530 to match the work providedFirmly, it can be achieved that a pair of of slide plate 420 towards 410 center line of head body or deviates spray along the guide direction synchronization of open slotThe direction of head 410 center line of ontology moves, and the opening size so as to fulfill spray material port 410c changes.
The melt flow channel melted for consumptive material is provided in above-mentioned melting mechanism 10, the feed end of melt flow channel is provided withFor the sleeve 20 of the conveying into melt channel, the exhaust end of melt channel and the linkage section for being set to head body 410410a is connected, and melts the heating being additionally provided in mechanism 10 for providing the consumptive material in melt flow channel thermal energy needed for fusingElement 110.More preferably, the sheet radiating piece for cooling is provided on sleeve 20, its purpose is that in reduction sleeve 20The temperature of consumptive material avoids the consumptive material in sleeve 20 that fusing or softening occurs.
Referring to attached drawing 4-8, the annular groove a610 for installing plectrum 510, supporter 60 are provided on above-mentioned supporter 60On be additionally provided with annular groove b620 for installing guide pin 530, annular groove a610 is conllinear with the rotation center of plectrum 510, annular grooveB620 is conllinear with the rotation center of guide pin 530, and the power output end of above-mentioned power supply device 30 is connected to plectrum 510It is at center and conllinear with the rotation center of plectrum 510.
Attached drawing 5,6 is participated in, is additionally provided on supporter 60 and is connected annular groove a610 inner cavities, annular groove b620 inner cavities and be used for driving lever520 grooves 630 passed through.
Participate in attached drawing 6,7, be provided at the center of annular groove b620 passed through for linkage section 410a and with head body 410The centre bore 640 that outer wall matches, be additionally provided on annular groove b620 be located at respectively 640 both sides of centre bore and with centre bore 640The locating notch 650 of connection, two locating notches 650 are along the radial distribution of centre bore 640 and two 650 centers of locating notchThe line of line and the line at annular groove a610 centers, annular groove b620 centers are perpendicular, are additionally provided on annular groove b620 positioned at centre bore640 both sides and positioned at the guiding notch 660 in the outside of locating notch 650, be oriented to notch 660 connected with locating notch 650 andThe center line of notch 660 and the centerline collineation of locating notch 650 are oriented to, is provided with and locating notch 650 in head body 410The protruding block to match, slide plate 420 match with being oriented to notch 660 and along being oriented to the guide direction of notch 660 along centre bore640 radial motion.Head body 410 and the cooperation of a pair of of locating notch 650, constrain position and the spray of head body 410Rotation around own axes cannot occur for head ontology 410, and the motion state of slide plate 420 can further be stablized by being oriented to notch 660.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention；A variety of modifications of these embodiments will be apparent for those skilled in the art, defined in the present inventionGeneral Principle can not depart from the present invention spirit or scope in the case of, realize in other embodiments.Therefore, originallyInvention will not be defined to the embodiments shown herein, and be to fit to and the principles and novel features disclosed hereinConsistent most wide range.