CN107042632A - A kind of variable-diameter spray head and extrusion device for being used to build 3D printing - Google Patents
A kind of variable-diameter spray head and extrusion device for being used to build 3D printing Download PDFInfo
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- CN107042632A CN107042632A CN201710457592.3A CN201710457592A CN107042632A CN 107042632 A CN107042632 A CN 107042632A CN 201710457592 A CN201710457592 A CN 201710457592A CN 107042632 A CN107042632 A CN 107042632A
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- turnbarrel
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a kind of variable-diameter spray head for being used to build 3D printing, including：Revolving dial, bottom plate, four line slideways, four sliding blocks and four right angle moving plates；When revolving dial and bottom plate relatively rotate, revolving dial drives four drive division synchronous axial systems by four driver slots, and then four sliding blocks are driven along four line slideway synchronous slides, four sliding blocks drive four right angle moving plates synchronously to produce relative movement, so as to change the size of square nozzle diameter by changing the relative position of four right angle moving plates in print procedure.When the larger region of print area, square nozzle diameter can be expanded, discharging speed is improved, printing need not be both repeated several times, be also not required to extend the residence time of shower nozzle in this place, so as to improve printing effect.
Description
Technical field
The present invention relates to building 3D printing field, more particularly, to a kind of variable-diameter spray head for being used to build 3D printing and
Extrusion device, the cement mortar masonry 3D printing for extruding solidification.
Background technology
3D printing technique is a kind of increases material manufacturing technology that three-dimensional structure is directly manufactured from mathematical model, and it originates from 20 generation
Record the eighties, merged the cutting edge technology of the subjects such as information technology, Electromechanical Control technology, material science and technology, at present
Through Successful utilization in industries such as Aero-Space, automobile, biological medicines.3D printing technique brings for the development of construction industry with change
Brand-new thinking, has in terms of the problems such as environmental pollution, the wasting of resources, human resources for solving puzzlement traditional architecture industry are short
Powerful application potential, specifically from the point of view of, mainly include：
1) without template, manual labor's demand is reduced, so as to reduce construction cost；
2) greatly shorten on-site construction time by Machine automated construction means, improve efficiency of construction；
3) increasing material manufacturing mode reduces waste of material and building waste discharge, effective environmental protection；
4) Design of digital breaks through the existing design free degree, realizes more complicated building and structure design.
In modern construction, cement mortar (concrete) is the most widely used class composite building material, will
Cement mortar, as the raw material of 3D printing, is the main flow selection for the building 3D printing technique for being currently based on extrusion curing process.
This kind of building 3D printing hardware system mainly includes control device, telecontrol equipment, drawing-in device and extrusion device, wherein, extrusion
Device is directly connected to the Forming Quality of printing building products component, most important.However, existing such building 3D printing is squeezed
Go out device generally existing some shortcomings in actual applications, mainly including the following aspects：
(1) jet size of existing extrusion device is fixed in print procedure, when with a constant small-bore spray
During the big figure of mouth processed complex, generally require to carry out multiple tracks processing, or when stopping longer printing in the larger region of area
Between could complete printing manufacture, directly result in printing effect low.
(2) nozzle of existing extrusion device is circle, and there is the obvious layering with radian the component product outer surface of printing
Texture, is even more that can not meet intrinsic Forming Quality requirement especially in edges and corners, Curvature varying visibility point.
(3) existing extrusion device considers not enough to the demand that equipment after printing is cleaned, particularly the dismounting of spray nozzle device and
Cleaning is very inconvenient, due to using tubular nozzle, usually causes partial material residual because can not clean up nozzle interior completely
Alluvial is stayed, the Forming Quality during follow-up use is gently then influenceed, it is heavy then directly result in device damage.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the present invention is intended to provide a kind of shower nozzle, variable by setting
The constructing of footpath, the nozzle and easy-to-mount part of square, solve in the prior art that printing effect is low, be difficult to meet into
Type quality requirement, the technical problem of dismounting cleaning inconvenience.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of reducing spray for being used to build 3D printing
Head, including：Revolving dial, bottom plate, four line slideways, four sliding blocks and four right angle moving plates；
Revolving dial circumferentially offers four driver slots；
Bottom plate is located at below revolving dial；The square distribution of four line slideways, is installed on bottom plate；
Four sliding blocks, which are corresponded, to be slidably mounted on four line slideways, also, a drive is respectively provided with four sliding blocks
Dynamic portion, totally four drive divisions, are corresponded in four driver slots of insertion；
Four right angle moving plates are located at below bottom plate, and one-to-one corresponding is installed on four sliding blocks, also, four right angle moving plates
Right-angle side is fitted two-by-two, and square nozzle is surrounded in centre；Wherein,
Bottom plate and revolving dial offer the through hole of the square nozzle of correspondence, for blanking；
When revolving dial and bottom plate relatively rotate, revolving dial drives four drive divisions same by four driver slots
Step is rotated, and then drives four sliding blocks along four line slideway synchronous slides, and four sliding blocks drive four right angle moving plates synchronously to produce
Raw relative movement, so as to change the bore of square nozzle.
Further, including limiting plate；Limiting plate has a plane, and the plane is close to four right angle moving plates, to ensure four
Individual right angle moving plate is in the same plane all the time in motion process；The through hole of the square nozzle of correspondence is offered on limiting plate.
Further, including four bearings, one-to-one corresponding is arranged in four driver slots；Four drive divisions are shaft-like knot
Structure, is corresponded in four bearings of insertion.
On the other hand, to achieve these goals, present invention also offers a kind of extrusion device for being used to build 3D printing,
It includes foregoing variable-diameter spray head.
Further, variable-diameter spray head includes the first turnbarrel and the first motor, and the first motor is used to drive first to rotate
Sleeve is rotated；Revolving dial is on the first turnbarrel, with the first turnbarrel synchronous axial system.
Further, the extrusion device includes rotary module, and the rotary module includes the second turnbarrel and the second motor；
Second motor is used to drive the second turnbarrel to rotate, and bottom plate is on the second turnbarrel；
Revolving dial, bottom plate, the first turnbarrel and the second turnbarrel are coaxially arranged, and the first turnbarrel is enclosed on
Outside second turnbarrel.
Further, the extrusion device includes stirring module and conveying module；Stir module, conveying module, rotary module
And variable-diameter spray head is sequentially arranged from top to bottom；
Stirring module includes the 3rd motor, agitator arm and hopper；3rd motor connection agitator arm, agitator arm is placed in
In hopper, hopper bottom is material outlet；
Conveying module includes the 4th motor, screw rod, screw pump stator；4th motor connection screw rod, screw pump is installed on material
Struggle against at the material outlet of bottom, screw rod top is located in screw pump；
Second turnbarrel upper end connecting screw rod pump of rotary module, screw rod bottom is located in the second turnbarrel.
Further, the 3rd motor is connected with agitator arm by the 3rd turnbarrel, the connection of the 4th motor and screw rod
Axle is coaxially disposed with the 3rd turnbarrel, and inside the 3rd turnbarrel.
Further, rotary module also includes the first motor mount, and the first motor mount is fixed on the second rotary sleeve
Cylinder is outside；First motor, the first turnbarrel are mounted on the first motor mount, are synchronized with the movement with the second turnbarrel；
First turnbarrel can be rotated relative to the first motor mount.
Further, limiting plate is installed on the first motor mount, is synchronized with the movement with the first motor mount, bottom plate position
Between limiting plate and the first motor mount.
In general, the contemplated above technical scheme of the present invention compared with prior art, has the advantages that：
1st, the present invention is combined by four right angle moving plates forms nozzle, can be dynamic by changing four right angles in print procedure
The relative position of piece changes the size of nozzle diameter, when the larger region of print area, can be improved with enlarged nozzle bore
Discharging speed, need not both be repeated several times printing, also be not required to extend the residence time of shower nozzle in this place, so as to improve printing effect；
2nd, the present invention can be relieved or even eliminate the band arc of the component product outer surface of printing using square nozzle
The layering texture of degree, especially in edges and corners, Curvature varying visibility point, substantially, Forming Quality is significantly improved improvement；
3rd, the square nozzle in the present invention is put together by four right angle moving plates, is easy to dismounting, compared to traditional
Tubular nozzle is difficult to clean inside, and the present invention can be cleaned directly to the surface of the right angle moving plate after dismounting, easy to clean,
Thoroughly；
4th, device of the invention uses modularized design, and four functional modules can be dismounted, and is easy to safeguard and cleaning.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the preferred embodiment of the extrusion device of the present invention；
Fig. 2 is Fig. 1 exploded and perspective diagram；
Fig. 3 is Fig. 1 explosive view；
Fig. 4 is the overall package figure of rotary module and variable-diameter spray head；
Fig. 5 is the assembling mode schematic diagram of rotary module and variable-diameter spray head；
Fig. 6 is one of Fig. 5 explosive view for looking up visual angle；
Fig. 7 is the explosive view at a Fig. 5 vertical view visual angle；
Fig. 8 is the schematic cross-sectional view after variable-diameter spray head and the assembling of the second turnbarrel；
Fig. 9 is the bore change procedure schematic diagram of square nozzle；
Figure 10 is the schematic diagram for stirring module；
Figure 11 is the schematic diagram of conveying module；
Figure 12 is the schematic diagram of ancillary structural member；
Figure 13 is the operation principle block diagram of the extrusion device of the present invention.
In all of the figs, identical reference is used for representing identical element or structure, wherein：
1- variable-diameter spray heads
The baffle plate of 11- revolving dial 111- driver slots 112
113- bearing 114- spacing ring 12- bottom plates
13- line slideway 14- sliding block 141- drive divisions
15- right angles moving plate 151- square nozzle 16- limiting plates
17- the first motor 18- the first turnbarrel the first motor mounts of 19-
2- rotary modules
21- the second motor 22- the second turnbarrel the first fasteners of 23-
24- the second motor mount the second fasteners of 25-
3- stirs module
The motor 32- agitator arm 33- hoppers of 31- the 3rd
The turnbarrel 35- chain-wheel mechanisms of 34- the 3rd
4- conveying modules
The motor 42- shaft coupling 43- screw rods of 41- the 4th
44- screw pump stator 45- universal driving shafts
5- ancillary structural members
The motor mounts of the 3rd motor mount 53- of 51- main body rack 52- the 4th
54- hopper mounting seat 55- the first protective cover the second protective covers of 56-
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
In order to overcome, the existing building 3D printing molded appearance based on extrusion solidification is second-rate, printing effect is relatively low, set
The problems such as standby dismounting clean and maintenance inconvenience, the present invention proposes a kind of extrusion device for being used to build 3D printing.
Fig. 1-3 is the schematic perspective view and explosive view of the extrusion device.The extrusion device is installed on whole 3D printing system
Telecontrol equipment --- on the hoisting cross beam of gantry frame type triaxial coordinate machine (not shown), by variable-diameter spray head 1, rotary module 2, stir
Module 3,4 four modules of conveying module and other ancillary structural members 5 are mixed to constitute.Stir module 3, conveying module 4, rotary module 2
And variable-diameter spray head 1 is sequentially arranged from top to bottom.Make the extrusion device that there is preferably dismounting performance using modularized design, just
In clean and maintenance.
In the present invention, the collaborative work of variable-diameter spray head and rotary module is that material realizes intelligence extrusion, improves processing effect
The key of rate, refer to Fig. 4-8, be the variable-diameter spray head 1 of the present invention and the assembling of rotary module 2 and decomposing schematic representation.Tie below
Operation principle, process and the specific configuration for closing Fig. 4-8 pairs of the two modules are illustrated.
Variable-diameter spray head 1 includes revolving dial 11, bottom plate 12, four line slideways 13, four sliding blocks 14 and four right angles
Moving plate 15.Revolving dial 11 is circumferential to offer four driver slots 111.Bottom plate 12 is located at the lower section of revolving dial 11, and four straight lines are led
The square distribution of rail 13, is installed on bottom plate 12.Four sliding blocks 14, which are corresponded, to be slidably mounted on four line slideways 13,
Also, a drive division 141 is respectively provided with four sliding blocks 14, totally four drive divisions 141, corresponds four driver slots of insertion
In 111.Four right angle moving plates 15 are located at the lower section of bottom plate 12, and one-to-one corresponding is installed on four sliding blocks 14, also, four right angles are moved
The right-angle side of piece 15 is fitted two-by-two, and square nozzle 151 (such as Fig. 9) is surrounded in centre.
Wherein, bottom plate 12 and revolving dial 11 offer the through hole of the square nozzle 151 of correspondence, for blanking.Work as rotation
When transfer disk 11 relatively rotates with bottom plate 12, revolving dial 11 drives four drive divisions 141 same by four driver slots 111
Step is rotated, and then drives four sliding blocks 14 along four synchronous slides of line slideway 13, and four sliding blocks 14 drive four right angle moving plates
15 synchronous produce relatively move, so as to change the bore of square nozzle 151.
Variable-diameter spray head also includes limiting plate 16, and limiting plate 16 has a plane, and the plane is close to four right angle moving plates 15, with
Ensure that four right angle moving plates 15 are in the same plane all the time in motion process；Correspondence square spray is offered on limiting plate 16
The through hole of mouth 151.
In order that the driving sliding block 14 of revolving dial 11 is more smooth, variable-diameter spray head also includes four bearings 113, and one-to-one corresponding is set
It is placed in four driver slots 111；Four drive divisions 141 are shaft-like structure, are corresponded in four bearings 113 of insertion.Driving
Baffle plate 112 is provided with groove 111, rotation dials driver plate outer rim and is provided with spacing ring 114, in order to ensure bearing 113 is located at driver slot 111
In.In other embodiments (not shown), driver slot 111 directly can also be set to waist type blind hole, bearing 113 is placed wherein,
Without setting spacing ring 114.
The variable-diameter spray head of the present invention is the variable-diameter structure that centers, and is designed different from the eclipsed form of camera shutter, of the invention
Variable-diameter spray head is properly termed as " the spliced variable-diameter structure that centers of translation ".The structure is identical straight by some block-shaped sizes
Angular motion piece 15 is spliced to form the Central Symmetry reducing right angle moving plate 15 groups that solid matter cloth is tightened in same level, every piece of right angle two-by-two
Moving plate 15 is rigidly connected with a sliding block 14, and each sliding block 14 can be moved along straight line guide rail 13, i.e. right angle moving plate 15, cunning
Block 14, line slideway 13 are corresponded, and line slideway 13 is located on a bottom plate 12, and bottom plate 12 passes through bolt and rotary module 2
Second turnbarrel 22 is rigidly connected.In other embodiments (not shown), four shape sizes of right angle moving plate 15 may not be used
Together, as long as ensureing that four right angles position is oppositely arranged is spliced into square nozzle 151.
Variable-diameter spray head 1 also includes the first motor 17, the first turnbarrel 18 and the first motor mount 19, the first motor
17th, the first turnbarrel 18 is mounted on the first motor mount 19, and the first turnbarrel 18 can drive in the first motor 17
Under rotated relative to the first motor mount 19.In the present embodiment, revolving dial 11 is fastened by bolts in the first rotary sleeve
On cylinder 18, in other embodiments (not shown), the mode that revolving dial 11 is arranged on the first turnbarrel 18 can also be
It is integrally formed.Limiting plate 16 is installed on the first motor mount 19, is synchronized with the movement with the first motor mount 19, bottom plate 12
Between the motor mount 19 of limiting plate 16 and first.In other embodiments (not shown), if directly rotated using first
The lower surface of sleeve 18 coordinates the position of limitation bearing 113 with sliding block 14, then can also be not provided with baffle plate 112.
When receiving rotating signal, the first motor 17 drives the first turnbarrel 18 to rotate, so as to drive revolving dial 11
Rotate, and then stir all sliding blocks 14 and be synchronized with the movement along line slideway 13, all right angle moving plates 15 are in corresponding sliding block 14
Passively centrifuged or centripetal motion under driving, the contact surface that mutually hands down dislocation, the central area surrounded in four right angle moving plates 15
The aperture of centrically symmetric shape is formed, the shape of aperture is determined that the bore of aperture is by right angle moving plate by the contact surface of right angle moving plate 15
15 dislocation distances determine that the center of aperture remains constant and do not rotated.The aperture is square nozzle 151, i.e., due to
The geometric center of square nozzle 151 is located on the rotation axis of its rotation, and the square nozzle 151 can center reducing.
Fig. 9 is refer to, is the reducing process of square nozzle 151, in fig .9, when revolving dial 11 (Fig. 9 is not shown) is inverse
When hour hands are rotated, four right angle moving plates 15 linear slide in the counterclockwise direction, the bore of square nozzle 151 is according to d1、d2、d3
Order be gradually reduced, until for 0, that is, closing.When revolving dial 11 is rotated clockwise, the bore of square nozzle 151 is pressed
According to d3、d2、d1Order gradually increase.Increase and to reduce process reversible, therefore, variable-diameter spray head of the invention can be according to being added
The geometry of work figure and the square nozzle 151 of planning scan course and control right angle moving plate in real time in print procedure
15 caliber sizes for automatically adjusting square nozzle 151 along the slip of bottom plate 12 change (such as 0mm~20mm) within a preset range,
So that different Working positions remains most effective rational jet size.
Fig. 4,5 are refer to, rotary module 2 is used to realize the rotation of square nozzle 151 in the horizontal plane, specifically, rotation
Revolving die block 2 is engaged with variable-diameter spray head, on curve printing path, and square is adjusted according to the change real time rotation of tangential direction
The angle of nozzle 151, makes it be adapted to the change of scan line route curvature of a curve all the time.
The rotary module 2 includes the second motor 21, the second turnbarrel 22, the second motor mount 24, the first fastener
23 and second fastener 25.Second motor 21 is used to drive the second turnbarrel 22 to rotate, and bottom plate 12 is located at the second rotary sleeve
On cylinder 22.Revolving dial 11, bottom plate 12, the first turnbarrel 18 and the second turnbarrel 22 are coaxially arranged, and the first rotation
Sleeve 18 is enclosed on outside the second turnbarrel 22.
Second motor mount 24 is fixed on the main body rack 51 of extrusion device, and the second motor 21 is fixed on the second motor
In mounting seat 24.In the present embodiment, the first motor mount 19 is fixed by the first fastener 23 with the second turnbarrel 22
Connection, so that variable-diameter spray head can be with the synchronous axial system of the second turnbarrel 22.In other embodiments (not shown), the first motor
The set-up mode that mounting seat 19 is arranged on the second turnbarrel 22 can also be integrally formed.Second motor 21 and a rotary shaft
Rotating module is connected and composed, the structure of the rotary shaft and identical with the first turnbarrel 18 of mounting means and variable-diameter spray head.The
Two turnbarrels 22 are rigidly connected with the rotary shaft in rotating module by the second fastener 25, when the second motor 21 receives rotation
Signal and when rotating, the second turnbarrel 22 synchronous rotary under the drive of the second fastener 25.(do not scheme in other embodiments
Show), the structures such as decelerator, sprocket wheel can also be used to be directly connected to the second motor 21 and the second turnbarrel 22.
Figure 10 is refer to, stirring module 3 is made up of parts such as the 3rd motor 31, agitator arm 32, hoppers 33.Stir module
3 include the 3rd motor 31, chain-wheel mechanism 35, the 3rd turnbarrel 34, agitator arm 32 and hopper 33.The connection of 3rd motor 31 is stirred
Impeller 32 is mixed, agitator arm 32 is placed in hopper 33, the bottom of hopper 33 is material outlet.3rd motor 31 passes through chain-wheel mechanism 35
The 3rd turnbarrel 34 is connected, the lower end of the 3rd turnbarrel 34 is fixedly connected with agitator arm 32, and impeller is located in hopper 33.Stirring
3rd motor 31 of module 3 controls the rotating speed of agitator arm 32 in suitable scope, is made by stirring action in hopper 33
Material keeps preferable mobility, and coordinates the downward extruded material of conveying module.
Figure 11 is refer to, conveying module includes the 4th motor 41, shaft coupling 42, screw rod 43, screw pump stator 44, universal driving shaft
45.4th motor 41 is by universal driving shaft 45 and the connecting screw rod 43 of shaft coupling 42, and screw pump stator 44 is installed on the bottom thing of hopper 33
Expect exit, the top of screw rod 43 is located in screw pump stator 44.The top of the second turnbarrel 22 of rotary module 2 is provided with ladder
Hole, for the bottom of connecting screw rod pump stator 44, the bottom of screw rod 43 is located in the second turnbarrel 22.3rd motor 31 and paddle
Wheel 32 is connected by the 3rd turnbarrel 34, the connecting shaft (i.e. universal driving shaft 45) and the 3rd rotary sleeve of the 4th motor 41 and screw rod 43
Cylinder 34 is coaxially disposed, and universal driving shaft 45 is located inside the 3rd turnbarrel 34.
In the present embodiment, agitator arm 32, the blade of screw rod 43, motor of stirring module 3 and conveying module etc. are with bullet
Property shaft coupling 42 connect, have good resiliency and damping property, can conveniently disassembly, cleaning at any time, be conducive to plant maintenance.
Figure 12 is refer to, extrusion device of the invention also includes ancillary structural member 5, and ancillary structural member 5 includes main body rack
51st, the 3rd motor mount 52, the 4th motor mount 53, hopper mounting seat 54, the first protective cover 55, the second protective cover 56 with
And feeding mouth.Main body rack 51 is used to support each module, and each module is installed on to the gantry frame type three of 3D printing system together
On axial coordinate machine.3rd motor mount 52 is used to install the 3rd motor 31, and the 4th motor mount 53 is used to install the 4th electricity
Machine 41, hopper mounting seat 54 is used to install hopper 33, and the first protective cover 55 is used to protect chain-wheel mechanism 35, and the second protective cover 56 is used
In protection rotary module 2.Especially, in the present embodiment, the first protective cover 55 and the second protective cover 56 use transparent material,
Such as acrylic material, convenient observation internal operation situation, pinpoints the problems in time.
Each part of ancillary structural member 5 as Figure 1-3, is used with the assembled relation of other modules due to the present embodiment
It is that conventional bolt installs fastening means, therefore repeats no more.
Figure 13 is refer to, is the operation principle block diagram of the present invention.The course of work of the extrusion device of the present invention is as follows：
(1) the 3rd motor driving agitator arm 32 of stirring module 3 by drawing-in device in hopper 33 to conveying the thing fed
Material is stirred, according to material denseness match rational wheel speed make material reach extrusion needed for fluidity.
(2) servomotor of conveying module 4 is rotated by drive screws 43 such as universal driving shaft 45, shaft couplings 42, according to motion
Device X, the translational velocity of Y-axis match the rational rotating speed of screw rod 43, with thing uniformly and stably vertically downward in conveyor hopper 33
Material.
(3) the first motor driving revolving dial 11 of variable-diameter spray head 1 is rotated to an angle with certain speed, and driving right angle is moved
Piece 15 is centrifuged or centripetal slip along bottom plate 12 so that the square nozzle 151 being mutually spliced to form by several blocks of right angle moving plates 15
Change its size in real time, control the width of strip-shaped materials conveyed downwards by conveying module 4, to adapt to current square nozzle
Descriptive geometry size in 151 courses, realizes and efficiently, accurately prints.
(4) the servomotor actuating sleeve of rotary module 2 in the turnbarrel of the stator exterior of screw rod 43 according to current square
The travel path of nozzle 151 is rotated to an angle with certain speed in real time, and one side of the square nozzle 151 of control is all the time along road
The tangential direction in footpath is advanced, and coordinates variable-diameter spray head 1 to control the shaping apparent mass of graphics component.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of variable-diameter spray head for being used to build 3D printing, it is characterised in that including：Revolving dial, bottom plate, four straight lines are led
Rail, four sliding blocks and four right angle moving plates；
Revolving dial circumferentially offers four driver slots；
Bottom plate is located at below revolving dial；The square distribution of four line slideways, is installed on bottom plate；
Four sliding blocks are corresponded and are slidably mounted on four line slideways, also, are respectively provided with a drive division on four sliding blocks,
Totally four drive divisions, are corresponded in four driver slots of insertion；
Four right angle moving plates are located at below bottom plate, and one-to-one corresponding is installed on four sliding blocks, also, the right angle of four right angle moving plates
Side is fitted two-by-two, and square nozzle is surrounded in centre；Wherein,
Bottom plate and revolving dial offer the through hole of the square nozzle of correspondence, for blanking；
When revolving dial and bottom plate relatively rotate, revolving dial drives four drive divisions synchronously to turn by four driver slots
It is dynamic, and then drive four sliding blocks along four line slideway synchronous slides, four sliding blocks drive four right angle moving plates synchronously to produce phase
To movement, so as to change the bore of square nozzle.
2. a kind of variable-diameter spray head for being used to build 3D printing as claimed in claim 1, it is characterised in that including limiting plate；Limit
Position plate has a plane, and the plane is close to four right angle moving plates, to ensure that four right angle moving plates are in all the time in motion process
On same plane；The through hole of the square nozzle of correspondence is offered on limiting plate.
3. a kind of variable-diameter spray head for being used to build 3D printing as claimed in claim 1 or 2, it is characterised in that including four axles
Hold, one-to-one corresponding is arranged in four driver slots；Four drive divisions are shaft-like structure, are corresponded in four bearings of insertion.
4. a kind of extrusion device for being used to build 3D printing, it is characterised in that including as described in claim 1-3 any one
Variable-diameter spray head.
5. a kind of extrusion device for being used to build 3D printing as claimed in claim 4, it is characterised in that variable-diameter spray head includes the
One turnbarrel and the first motor, the first motor are used to drive the first turnbarrel to rotate；Revolving dial is located at the first rotary sleeve
On cylinder, with the first turnbarrel synchronous axial system.
6. a kind of extrusion device for being used to build 3D printing as claimed in claim 5, it is characterised in that including rotary module,
The rotary module includes the second turnbarrel and the second motor；Second motor is used to drive the second turnbarrel to rotate, and bottom plate is set
In on the second turnbarrel；
Revolving dial, bottom plate, the first turnbarrel and the second turnbarrel are coaxially arranged, and the first turnbarrel is enclosed on second
Outside turnbarrel.
7. a kind of extrusion device for being used to build 3D printing as described in claim 5 or 6, it is characterised in that including stirring mould
Block and conveying module；Stirring module, conveying module, rotary module and variable-diameter spray head are sequentially arranged from top to bottom；
Stirring module includes the 3rd motor, agitator arm and hopper；3rd motor connection agitator arm, agitator arm is placed in hopper
In, hopper bottom is material outlet；
Conveying module includes the 4th motor, screw rod, screw pump stator；4th motor connection screw rod, screw pump is installed under hopper
At portion's material outlet, screw rod top is located in screw pump；
Second turnbarrel upper end connecting screw rod pump of rotary module, screw rod bottom is located in the second turnbarrel.
8. a kind of extrusion device for being used to build 3D printing as claimed in claim 7, it is characterised in that the 3rd motor and stirring
Impeller is connected by the 3rd turnbarrel, and connecting shaft and the 3rd turnbarrel of the 4th motor and screw rod are coaxially disposed, and are located at
Inside 3rd turnbarrel.
9. a kind of extrusion device for being used to build 3D printing as claimed in claim 7, it is characterised in that rotary module also includes
First motor mount, the first motor mount is fixed on outside the second turnbarrel；First motor, the first turnbarrel are pacified
Loaded on the first motor mount, it is synchronized with the movement with the second turnbarrel；First turnbarrel can be installed relative to the first motor
Seat is rotated.
10. a kind of extrusion device for being used to build 3D printing as claimed in claim 7, it is characterised in that limiting plate is installed on
On first motor mount, it is synchronized with the movement with the first motor mount, bottom plate is located between limiting plate and the first motor mount.
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| CN110056192B (en) * | 2019-04-29 | 2020-10-23 | 河北工业大学 | Changeable concrete 3D print head of diameter |
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| US10967571B1 (en) | 2019-10-29 | 2021-04-06 | International Business Machines Corporation | Varying orifice cross-section for three-dimensional printing |
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| WO2021196858A1 (en) * | 2020-04-03 | 2021-10-07 | 苏州美梦机器有限公司 | Apparatus for 3d printing and control method therefor |
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| CN111391063A (en) * | 2020-06-02 | 2020-07-10 | 华创智造(天津)科技有限公司 | Print shower nozzle and use its building 3D printer |
| CN113199751A (en) * | 2021-04-12 | 2021-08-03 | 福建江夏学院 | Automatic material taking device for 3D printing |
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| CN114701039A (en) * | 2022-03-24 | 2022-07-05 | 华中科技大学 | Pen-drawing type 3D printing method and system under assistance of augmented reality |
| CN114633475A (en) * | 2022-05-20 | 2022-06-17 | 南昌大学 | Variable-caliber 3D printing extrusion head and application method thereof |
| CN115288445A (en) * | 2022-07-08 | 2022-11-04 | 山东理工大学 | Building 3D printing nozzle device with variable radian and method |
| CN115288445B (en) * | 2022-07-08 | 2024-02-02 | 山东理工大学 | Building 3D printing spray head device with variable radian and method |
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