CN107310153A - A kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method - Google Patents
A kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method Download PDFInfo
- Publication number
- CN107310153A CN107310153A CN201710672258.XA CN201710672258A CN107310153A CN 107310153 A CN107310153 A CN 107310153A CN 201710672258 A CN201710672258 A CN 201710672258A CN 107310153 A CN107310153 A CN 107310153A
- Authority
- CN
- China
- Prior art keywords
- string diameter
- loose collar
- gear
- rotational angle
- shower nozzle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Abstract
The invention discloses a kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method, including fixed frame, the bottoming hole for installing heating rod is provided with fixed frame, the top of fixed frame is provided with charging aperture, bottom is provided with string diameter governor motion, the bottom of string diameter governor motion is connected with nozzle, and the side of fixed frame is additionally provided with the motor mechanism for controlling string diameter governor motion.The present invention can realize that wire vent diameter is a wide range of, continuously adjust in high precision, not only meet required precision, improve printing effect but also avoid manually changing time loss, waste of material and security hidden trouble that jet size is brought.
Description
Technical field
The invention belongs to 3D printing technique field, and in particular to a kind of adjustable 3D printer shower nozzle of string diameter and its regulation side
Method.
Background technology
The wire vent diameter of the printing head of 3D printer on the market is certain at present, and the precision due to 3D printing is consolidated
It is scheduled on by the full accuracy of printing objects, causes 3D printing process efficiency to decline.With the low required precision thing of high-precision nozzle printing
Body, the time-write interval is very long；Although there is the printing head of different wire vent diameters, printing has the object of different requirements to precision
When seem helpless, it is often necessary to change.If wanting to shorten the time-write interval on the premise of precision is ensured, it must just cause nozzle
Diameter can be freely adjustable in print procedure.Pass through the wire vent diameter of adjust automatically printer head, you can change printing
Precision, to realize the purpose for shortening the time-write interval, lifting printing effect.It is straight that printer head wire vent is automatically adjusted to realization
Footpath, mainly solves following difficult point：First, pore size is changed in real time；2nd, between the control accuracy and speed and size of mechanical part
Coordination problem.
The content of the invention
It is existing to overcome it is an object of the invention to provide a kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method
The defect that technology is present, the present invention can realize that, high accuracy a wide range of to wire vent diameter is continuously adjusted, and not only meeting precision will
Ask, improve printing effect and avoid manually changing time loss, waste of material and potential safety hazard that jet size brings and ask
Topic.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
It is provided with a kind of adjustable 3D printer shower nozzle of string diameter, including fixed frame, fixed frame for installing heating
The bottoming hole of rod, the top of fixed frame is provided with charging aperture, and bottom is provided with string diameter governor motion, the bottom of string diameter governor motion
Nozzle is connected with, the side of fixed frame is additionally provided with the motor mechanism for controlling string diameter governor motion.
Further, described string diameter governor motion includes the circular groove that fixed frame bottom is set, circular groove
Center is provided with to be uniformly provided with some fixed stomidiums, circular groove around the centre bore connected with charging aperture, centre bore and set
There is loose collar, the center of loose collar, which is provided with around discharging opening corresponding with circular groove centre bore, discharging opening, to be symmetrically arranged with
Some movable slidings, are provided with some arc slide plates between loose collar and circular groove, one end top of arc slide plate is provided with consolidating
The fixed-end column that fixed end hole coordinates, other end bottom is provided with the movable newel post coordinated with movable sliding.
Further, described motor mechanism includes stepper motor, and the output shaft of stepper motor is connected by reducing gear
There is first gear；Circular groove is setting the side of motor mechanism to be provided with link slot, and loose collar outer is provided with the loose collar gear teeth,
The loose collar gear teeth pass through link slot and the gear teeth meshing of first gear.
Further, the outside of stepper motor is provided with protective cover, and protective cover is provided with heat emission hole, and fixed frame is provided with
Radiate grid.
Further, the reducing gear includes being engaged with the sun gear for being connected to stepper motor output shaft, sun gear
Fixed wheel is engaged with the outside of planetary gear, planetary gear, planetary gear is connected with second gear, second gear by planet carrier and is engaged with
3rd gear, first gear is arranged on the output shaft of the 3rd gear, and the fixed wheel is arranged in fixed wheel mounting bracket, and fixed wheel is installed
Frame is connected on fixed frame.
Further, the radian of arc slide plate is 120 °.
Further, the outside of nozzle is provided with nozzle guard cover, and the bottom of circular groove is provided with the cylinder cap coordinated with it, cylinder
Cover to be provided with bearing mounting hole and nozzle mounting hole, bearing mounting hole and be provided with bearing, loose collar is pacified provided with loose collar
Axle is filled, and loose collar installation axle is connected with bearing fit, nozzle is connected to the center of loose collar installation axle by nozzle mounting hole
Hole.
Further, the insulation hole for installing insulation rod is additionally provided with fixed frame, fixed frame is provided with two
The trip bolt of fixed heating rod and insulation rod is respectively equipped with trip bolt hole, two trip bolt holes.
A kind of adjusting method of the adjustable 3D printer shower nozzle of string diameter, comprises the following steps：
Step one：Material is added from charging aperture, fused materials are become by the effect of heating rod, while starting step
Stepper motor, makes first gear drive loose collar to rotate；
Step 2：When loose collar is rotated, the movable sliding on loose collar stirs movable newel post, makes arc slide plate with fixing end
Swung centered on post, the aperture being now made up of the Inner arc side of arc slide plate changes with the swing of arc slide plate；
Step 3：Relation between string diameter and loose collar rotational angle is obtained by emulation, then rotated according to loose collar
Relation between angle and stepper motor rotational angle obtains relation of the string diameter with stepper motor rotational angle；
Step 4：When needing to change string diameter to the required size of 3D printer shower nozzle, turned according to string diameter with stepper motor
The relation of dynamic angle obtains the stepper motor rotational angle corresponding to string diameter size, then adjusts stepper motor to required angle of rotation
Degree.
Further, step 3 is specially：String diameter is obtained out with loose collar angle of rotation by CAD/CAE software analog simulations
Some groups of data of change are spent, is fitted using MATLAB softwares and is obtained the relational expression that string diameter changes with loose collar rotational angle and be：
Y=0.07Rh+0.1
Wherein, RhLoose collar rotational angle is represented, y represents string diameter size；
The relation of loose collar rotational angle and motor rotational angle：
Wherein, RhIt is loose collar rotational angle, RdIt is motor rotational angle, i is gearratio；
Then string diameter and the relation of motor rotational angle are expressed as：
Compared with prior art, the present invention has following beneficial technique effect：
The 3D printer nozzle printing precision continuously adjustabe of the present invention, the requirement according to model to precision is wanted to precision
Ask low part to use low precision printing speed, use fine printing speed in high-precision part, it is ensured that on the premise of required precision
Greatly shorten the time-write interval, establish regulation printing precision during 3D printing, significantly shorten the time-write interval, improve printing effect
Technical foundation, 3D printer shower nozzle of the invention utilizes the adjustable advantage of string diameter, by changing printing precision, can be greatly enhanced
Printing effect：
(1) different product：For the high product of required precision, string diameter is diminished using string diameter governor motion, thickness step-down,
Print quality can be improved.For the not high product of required precision, string diameter is become big using string diameter governor motion, thickness is uprised, can
Improve print speed.
(2) identical product：Outer surface is printed using the less fuse of string diameter, the structure such as internal layer reinforcement, Auxiliary support
Printed using the larger fuse of string diameter, presentation quality can be improved, print speed can be improved again.
Further, string diameter governor motion includes loose collar, arc slide plate and fixed stomidium, by rotating loose collar band
Dynamic arc slide plate, the string diameter for constituting the Inner arc side of arc slide plate becomes big or diminished, it is possible to achieve string diameter is a wide range of, high accuracy
The function of continuously adjusting.
The inventive method drives loose collar to rotate using stepper motor band moving gear, when loose collar is rotated, loose collar
On movable sliding stir movable newel post, arc slide plate is swung centered on fixed-end column, now arc slide plate is interior
The string diameter of arc-shaped edges composition changes with the swing of arc slide plate, and string diameter is obtained with stepper motor rotation radian by largely emulating
Relation, when need change 3D printer shower nozzle string diameter to required size when, according to string diameter with motor rotate radian relation
The motor that figure obtains corresponding to string diameter size rotates radian, and then regulation motor not only meets essence to required rotation radian
Degree requires, improve printing effect and avoid manually changing time loss, waste of material that jet size brings and safety is hidden
Suffer from problem.
Brief description of the drawings
Fig. 1 is the string diameter regulation schematic diagram of the present invention；
Fig. 2 is the string diameter adjuster figure of the present invention；
Fig. 3 is the adjustable 3D printer shower nozzle installation diagram of string diameter of the present invention；
Fig. 4 is the adjustable 3D printer shower nozzle explosive view of string diameter of the present invention；
Fig. 5 is the gear reducer mechanism schematic diagram of the present invention；
Fig. 6 is the fixed frame front schematic view of the present invention；
Fig. 7 is the fixed frame schematic rear view of the present invention；
Fig. 8 is the string diameter adjuster cylinder cap schematic diagram of the present invention；
Fig. 9 is the protective cover schematic diagram of the present invention；
Figure 10 is the slide plate schematic diagram of the present invention；
Figure 11 is the loose collar schematic diagram of the present invention；
Figure 12 is string diameter and the graph of a relation of loose collar rotational angle during string diameter regulation of the present invention；
Figure 13 is string diameter and the graph of a relation of stepper motor rotational angle during string diameter regulation of the present invention.
In figure, 1. movable slidings, 2. loose collars, the 3. loose collar gear teeth, 4. fixed-end columns, 5. arc slide plates, 6. movable ends
Post, 7. fix stomidium, 8. nozzles, 9. nozzle guard covers, 10. cylinder caps, 11. trip bolt holes, 12. fixed frames, 13. radiatings
Grid, 14. charging apertures, 15. protective covers, 16. stepper motors, 17. reducing gears, 18. bearings, 19. first screws, 20. fixed wheels,
21. planetary gear, 22. planet carriers, 23. sun gears, 24. second gears, 25. the 3rd gears, 26. first gears, 27. fixed wheels are installed
Frame, 28. motor installing holes, 29. gear shaft holes, 30. planet frame aperture, 31. insulation holes, 32. bottoming holes, 33. counter sinks, 34. axles
Hold mounting hole, 35. nozzle mounting holes, 36. heat emission holes, 37. protective cover mounting holes, 38. cylinder cap mounting holes, 39. second screws,
40. loose collar installation axle.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1 to Figure 11, a kind of adjustable 3D printer shower nozzle of string diameter, including fixed frame 12, on fixed frame 12
The bottoming hole 32 for installing heating rod and the insulation hole 31 for installing insulation rod are provided with, fixed frame 12 is provided with two
The trip bolt of fixed heating rod and insulation rod, fixed machine are respectively equipped with individual trip bolt hole 11, two trip bolt holes 11
The top of frame 12 is provided with charging aperture 14, and bottom is provided with string diameter governor motion, and the bottom of string diameter governor motion is connected with nozzle 8,
The side of fixed frame 12 is additionally provided with the motor mechanism for controlling string diameter governor motion, and string diameter governor motion includes fixed frame
The circular groove that 12 bottoms are set, the center of circular groove is provided with around the centre bore connected with charging aperture 14, centre bore
Even be provided with some fixed stomidiums 7, circular groove is provided with loose collar 2, and the center of loose collar 2 is provided with and circular groove centre bore
Some movable slidings 1 are symmetrically arranged with around corresponding discharging opening, discharging opening, if being provided between loose collar 2 and circular groove
Dry arc slide plate 5, the radian of arc slide plate 5 is 120 °, and one end top of arc slide plate 5 is provided with and consolidating that fixed stomidium 7 coordinates
Fixed end post 4, other end bottom is provided with the movable newel post 6 coordinated with movable sliding 1, and motor mechanism includes stepper motor 16, stepping
The outside of motor 16 is provided with protective cover 15, and protective cover 15 is provided with heat emission hole 36, and fixed frame 12 is prevented provided with radiating grid 13
Be provided with protective cover mounting hole 37 on shield 15, and protective cover 15 by the second screw 39 for coordinating with protective cover mounting hole 37 with
Fixed frame 12 is connected, and the output shaft of stepper motor 16 is connected with first gear 26 by reducing gear 17；Circular groove is being set
The side for putting motor mechanism is provided with link slot, and the outer of loose collar 2 is the loose collar gear teeth 3, and the loose collar gear teeth 3 pass through link slot
With the gear teeth meshing of first gear 26, reducing gear 17 includes the sun gear 23 for being connected to the output shaft of stepper motor 16, sun gear
Planetary gear 21 is engaged with 23, the outside of planetary gear 21 is engaged with fixed wheel 20, and planetary gear 21 is connected with second by planet carrier 22
The 3rd gear 25 is engaged with gear 24, second gear 24, first gear 26 is arranged on the output shaft of the 3rd gear 25, connected
Be provided with groove be provided with installing plate, installing plate for the output shaft through the 3rd gear 25 gear shaft holes 29 and be used for
The planet frame aperture 30 of fixed carrier 22, the fixed wheel 20 is arranged in fixed wheel mounting bracket 27, and fixed wheel mounting bracket 27 is connected to solid
Determine in frame 12, the motor installing hole 28 for installing stepper motor 16 is additionally provided with fixed wheel mounting bracket 27.
The outside of nozzle 8 is provided with nozzle guard cover 8, and the bottom of circular groove is provided with the cylinder cap 10 coordinated with it, circular recessed
Fixed frame 12 around groove is provided with cylinder cap mounting hole 38, cylinder cap 10 and is provided with counter sink 33, cylinder cap 10 and fixed frame
12 the first screw 19 by being interspersed in counter sink 33 and cylinder cap mounting hole 38 is connected, and bearing mounting hole is provided with cylinder cap 10
34 and nozzle mounting hole 35, bearing 18 is provided with bearing mounting hole 34, and loose collar 2 is provided with loose collar installation axle 40, and living
Rotating ring installation axle 40 is connected with bearing 18, and nozzle 8 is connected to the center of loose collar installation axle 40 by nozzle mounting hole 35
Hole.
A kind of adjusting method of the adjustable 3D printer shower nozzle of string diameter, comprises the following steps：
Step one：Material is added from charging aperture 14, fused materials are become by the effect of heating rod, is started simultaneously
Stepper motor 16, makes first gear 26 drive loose collar 2 to rotate；
Step 2：When loose collar 2 is rotated, the movable sliding 1 on loose collar 2 stirs movable newel post 6, make arc slide plate 5 with
Swung centered on fixed-end column 4, the string diameter being now made up of the Inner arc side of arc slide plate 5 with arc slide plate 5 swing
And change；
Specifically, some groups of data that string diameter changes with loose collar rotational angle are obtained out by software analog simulation, profit
It is fitted with MATLAB softwares and obtains the relational expression that string diameter changes with loose collar rotational angle and be：
Y=0.07Rh+0.1
Wherein, RhLoose collar rotational angle is represented, y represents string diameter size；
The relation of loose collar rotational angle and motor rotational angle：
Wherein, RdIt is motor rotational angle, i is gearratio；
Then string diameter and the relation of motor rotational angle are expressed as：
Step 3：Relation between string diameter and the rotational angle of loose collar 2 is obtained by emulation, then according to 2 turns of loose collar
Dynamic relation between angle and the rotational angle of stepper motor 16 obtains relation of the string diameter with the rotational angle of stepper motor 16；
Step 4：When needing to change string diameter to the required size of 3D printer shower nozzle, according to string diameter with stepper motor 16
The relation of rotational angle obtains the stepper motor rotational angle corresponding to string diameter size, then adjusts stepper motor 16 to required turn
Dynamic angle.
The implementation process to the present invention is described in further detail below：
The method that change wire vent string diameter size in a big way can be changed at present is exactly artificial replacing wire vent nozzle, to 3D printing
Process brings many unnecessary troubles.The technical solution adopted in the present invention is to adjust slide plate to change 3D by stepper motor
The wire vent pore size of printer head, so as to change its wire vent precision.
The present invention is mainly made up of hot-melting mechanism, reducing gear and the part of string diameter governor motion three.When printed material via
Charging aperture 14, which enters to melt after hot-melting mechanism, forms fused materials, and fused materials flow out via string diameter governor motion, according to model
Requirement to precision, changes the aperture size of string diameter governor motion by stepper motor 16, it is directly determined by reducing gear
Wire vent diameter, finally sprays via nozzle 8.Whole regulation will realize regulatory function, it is necessary to which the problem of overcoming maximum is exactly structure
Problem, will not only consider the size of motor, it is also contemplated that the cooperation between the gearratio of gear, size and each structure
Problem；Whole controller structure is not only compact light and handy and easy to disassemble, and whole model is all to change repeatedly, such as gear
Thickness and rotating torque between problem, the structure of also fixed frame is to ensure that quality is minimum, prevents from influenceing printing precision.
String diameter governor motion is mainly three components：Loose collar 2, arc slide plate 5 and fixed stomidium 7.String diameter governor motion
Fixation stomidium 7 is motionless during work, and the fixed-end column 6 of the fixed stomidium 7 of insertion can only be around the fixed center rotating of stomidium 7.Work as activity
When ring 2 surrounds arc 5 central rotation of slide plate, movable sliding 1 thereon stirs movable newel post 3, makes arc slide plate 5 with fixed-end column
6 centers carry out mechanical swing, then the wire vent aperture pests occurrence rule being made up of several Inner arc sides of arc slide plate 5 changes.Pass through
Motor control, gear coordinate to drive loose collar 2 to move, and thus according to control signal stepper motor can be controlled to rotate and realized
A wide range of, high accuracy to aperture are continuously adjusted.
It is used for adjusting wire vent diameter using step motor control loose collar 2.Main flow is：First gear 26 is by slowing down
Mechanism is finally connected with stepper motor output shaft, by the speed and precision for controlling stepper motor to rotate, then passes through the first tooth
The structure of 26 engaged transmissions is taken turns to control loose collar 2 to rotate, to adjust the pore size of several arc slide plates 5 formation, specifically
Precision depend on precision, the speed reducing ratio of reducing gear of stepper motor, it is possible to achieve string diameter is a wide range of, high accuracy is continuously adjusted
Function.
20 groups of data that wire vent aperture changes with loose collar rotational angle are obtained by CAD/CAE software analog simulations, adjusted
Adjusting range is 0.1mm-2.0mm.As shown in figure 12, string diameter often changes 0.1mm, and loose collar rotates 1.43 °；Utilize MATLAB softwares
Fitting obtains the relational expression that string diameter changes with loose collar rotational angle：
Y=0.07Rh+0.1 (1)
Wherein, RhLoose collar rotational angle is represented, unit degree of being, y represents string diameter size, and unit is millimeter.
The relation of loose collar rotational angle and motor rotational angle：
Wherein, RdIt is motor rotational angle, i is gearratio.Gearratio is represented by：
Wherein, I1It is the sun gear number of teeth, I2It is the planetary gear number of teeth, I3It is the fixed wheel number of gears, I4It is the number of teeth of second gear, I5
It is the number of teeth of the 3rd gear, I6It is the number of teeth of first gear, I7It is the number of teeth of loose collar.
String diameter and the relation of motor rotational angle are represented by：
Wherein, RdRepresent motor rotational angle.
Degree of regulation is represented by：
Wherein, a represents motor step angle, and p represents to drive high-subdividing number, and i represents gearratio.Explanation：Degree of regulation is every
The minimum change quantity that a pulse finally causes string diameter to adjust is sent out to motor, for example：Step
A=1.8 ° of elongation, gearratio i=10, during high-subdividing number p=8, degree of regulation is 0.001575mm.
Therefore, when needing to change the string diameter of 3D printer shower nozzle, the motor according to corresponding to formula (4) obtains string diameter size
Rotational angle, rotational angle needed for then regulation motor is turned to can obtain required string diameter size.As shown in figure 13, string diameter is every
When changing 0.1mm, stepper motor rotates 8 °；When motor rotates 112 °, string diameter size is 1.5mm.
Claims (10)
1. a kind of adjustable 3D printer shower nozzle of string diameter, it is characterised in that including fixed frame (12), fixed frame is set on (12)
The bottoming hole (32) for installing heating rod is equipped with, the top of fixed frame (12) is provided with charging aperture (14), and bottom is provided with silk
Footpath governor motion, the bottom of string diameter governor motion is connected with nozzle (8), and the side of fixed frame (12) is additionally provided with for controlling silk
The motor mechanism of footpath governor motion.
2. a kind of adjustable 3D printer shower nozzle of string diameter according to claim 1, it is characterised in that described string diameter regulation
Mechanism includes the circular groove that fixed frame (12) bottom is set, and the center of circular groove with charging aperture (14) provided with connecting
It is uniformly provided with around heart hole, centre bore in some fixed stomidiums (7), circular groove and is provided with loose collar (2), loose collar (2)
Center be provided with discharging opening corresponding with circular groove centre bore, be symmetrically arranged with some movable slidings (1) around discharging opening,
Loose collar (2) is provided with some arc slide plates (5) between circular groove, and one end top of arc slide plate (5) is provided with and fixing end
The fixed-end column (4) that hole (7) coordinates, other end bottom is provided with the movable newel post (6) coordinated with movable sliding (1).
3. a kind of adjustable 3D printer shower nozzle of string diameter according to claim 2, it is characterised in that described motor mechanism
Including stepper motor (16), the output shaft of stepper motor (16) is connected with first gear (26) by reducing gear (17)；It is circular
Groove is setting the side of motor mechanism to be provided with link slot, and loose collar (2) outer is provided with the loose collar gear teeth (3), loose collar wheel
Tooth (3) passes through link slot and the gear teeth meshing of first gear (26).
4. the adjustable 3D printer shower nozzle of a kind of string diameter according to claim 3, it is characterised in that stepper motor (16)
Outside is provided with protective cover (15), and protective cover (15) is provided with heat emission hole (36), and fixed frame (12) is provided with radiating grid (13).
5. a kind of adjustable 3D printer shower nozzle of string diameter according to claim 3, it is characterised in that the reducing gear
(17) include being engaged with planetary gear (21) on the sun gear (23) for being connected to stepper motor (16) output shaft, sun gear (23), OK
Fixed wheel (20) is engaged with the outside of star-wheel (21), planetary gear (21) is connected with second gear (24), second by planet carrier (22)
The 3rd gear (25) is engaged with gear (24), first gear (26) is arranged on the output shaft of the 3rd gear (25), described fixed
Wheel (20) is arranged in fixed wheel mounting bracket (27), and fixed wheel mounting bracket (27) is connected on fixed frame (12).
6. the adjustable 3D printer shower nozzle of a kind of string diameter according to claim 2, it is characterised in that arc slide plate (5)
Radian is 120 °.
7. a kind of adjustable 3D printer shower nozzle of string diameter according to claim 2, it is characterised in that the outside of nozzle (8)
Provided with nozzle guard cover (8), the bottom of circular groove, which is provided with the cylinder cap (10) coordinated with it, cylinder cap (10), is provided with bearing peace
Fill and bearing (18) is provided with hole (34) and nozzle mounting hole (35), bearing mounting hole (34), loose collar (2) is provided with loose collar
Installation axle (40), and loose collar installation axle (40) and bearing (18) mating connection, nozzle (8) pass through nozzle mounting hole (35) and connected
To the centre bore of loose collar installation axle (40).
8. the adjustable 3D printer shower nozzle of a kind of string diameter according to claim 1, it is characterised in that on fixed frame (12)
The insulation hole (31) for installing insulation rod is additionally provided with, fixed frame (12) is provided with two trip bolt holes (11), two
The trip bolt of fixed heating rod and insulation rod is respectively equipped with trip bolt hole (11).
9. the adjusting method of the adjustable 3D printer shower nozzle of string diameter described in a kind of claim 3, it is characterised in that including following
Step：
Step one：Material is added from charging aperture (14), fused materials are become by the effect of heating rod, while starting step
Stepper motor (16), makes first gear (26) drive loose collar (2) to rotate；
Step 2：When loose collar (2) is rotated, the movable sliding (1) on loose collar (2) stirs movable newel post (6), makes arc slide plate
(5) swung centered on fixed-end column (4), the aperture being now made up of the Inner arc side of arc slide plate (5) is slided with arc
The swing of piece (5) and change；
Step 3：Relation between string diameter and loose collar (2) rotational angle is obtained by emulation, then turned according to loose collar (2)
Dynamic relation between angle and stepper motor (16) rotational angle obtains relation of the string diameter with stepper motor (16) rotational angle；
Step 4：When needing to change string diameter to the required size of 3D printer shower nozzle, turned according to string diameter with stepper motor (16)
The relation of dynamic angle obtains the stepper motor rotational angle corresponding to string diameter size, then adjusts stepper motor (16) and turns needed for
Dynamic angle.
10. a kind of adjusting method of the adjustable 3D printer shower nozzle of string diameter according to claim 9, it is characterised in that step
Rapid three are specially：Some groups of data that string diameter changes with loose collar rotational angle are obtained out by CAD/CAE software analog simulations,
It is fitted using MATLAB softwares and obtains the relational expression that string diameter changes with loose collar rotational angle and be：
Y=0.07Rh+0.1
Wherein, RhLoose collar rotational angle is represented, y represents string diameter size；
The relation of loose collar rotational angle and motor rotational angle：
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<msub>
<mi>R</mi>
<mi>h</mi>
</msub>
<mo>=</mo>
<mfrac>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mi>i</mi>
</mfrac>
</mrow>
Wherein, RhIt is loose collar rotational angle, RdIt is motor rotational angle, i is gearratio；
Then string diameter and the relation of motor rotational angle are expressed as：
<mrow>
<mi>y</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mn>0.07</mn>
<msub>
<mi>R</mi>
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<mi>i</mi>
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<mn>0.1.</mn>
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2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710672258.XA CN107310153A (en) | 2017-08-08 | 2017-08-08 | A kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710672258.XA CN107310153A (en) | 2017-08-08 | 2017-08-08 | A kind of adjustable 3D printer shower nozzle of string diameter and its adjusting method |
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| CN107310153A true CN107310153A (en) | 2017-11-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111761811A (en) * | 2020-06-30 | 2020-10-13 | 北京机科国创轻量化科学研究院有限公司 | Additive manufacturing method of fiber-reinforced thermoplastic resin-based composite material |
| CN112976573A (en) * | 2021-02-10 | 2021-06-18 | 宁波职业技术学院 | 3D prints with mobile control mechanism who prints shower nozzle |
| CN115230157A (en) * | 2022-07-01 | 2022-10-25 | 武汉理工大学 | Controllable 3D of adjustable line footpath of pressure prints and uses compound silk preparation facilities |
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| CN106426908A (en) * | 2016-10-14 | 2017-02-22 | 山东大学 | Variable-caliber 3D printer extrusion head and printing method thereof |
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| CN106426908A (en) * | 2016-10-14 | 2017-02-22 | 山东大学 | Variable-caliber 3D printer extrusion head and printing method thereof |
| CN206264352U (en) * | 2016-12-22 | 2017-06-20 | 东莞市皇龙电子有限公司 | The printhead adjustment structure of 3D printer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111761811A (en) * | 2020-06-30 | 2020-10-13 | 北京机科国创轻量化科学研究院有限公司 | Additive manufacturing method of fiber-reinforced thermoplastic resin-based composite material |
| CN112976573A (en) * | 2021-02-10 | 2021-06-18 | 宁波职业技术学院 | 3D prints with mobile control mechanism who prints shower nozzle |
| CN112976573B (en) * | 2021-02-10 | 2023-07-25 | 宁波职业技术学院 | 3D prints with removal control mechanism who prints shower nozzle |
| CN115230157A (en) * | 2022-07-01 | 2022-10-25 | 武汉理工大学 | Controllable 3D of adjustable line footpath of pressure prints and uses compound silk preparation facilities |
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Application publication date: 20171103 |