CN109366996B - A kind of extra quality extrusion system of V-type switching print head - Google Patents
A kind of extra quality extrusion system of V-type switching print head Download PDFInfo
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- CN109366996B CN109366996B CN201811452130.3A CN201811452130A CN109366996B CN 109366996 B CN109366996 B CN 109366996B CN 201811452130 A CN201811452130 A CN 201811452130A CN 109366996 B CN109366996 B CN 109366996B
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- Prior art keywords
- print head
- switching
- changer lever
- active
- guide rail
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Common Mechanisms (AREA)
Abstract
The invention discloses a kind of extra quality extrusion systems of V-type switching print head, including pedestal, active-feeding wheel, two miniature guide rail sliding blocks, two print head assemblies, two switching and booting components and changeover module, two miniature guide rail sliding blocks are symmetrically arranged in a manner of in vertical angle in active-feeding wheel two sides, two print head assemblies are vertically installed at respectively on two miniature guide rail sliding blocks, and changeover module drives switching and booting component that print head assembly is driven alternately to switch at an angle along miniature guide rail center line direction.The innovative design of the present invention movement angle structure of two print heads, two print head designs are installed at symmetrical angle structure, realize the synchronism switching that feeding material component working condition is completed while switching print head difference in height, overall structure is simple and reliable, it is easily achieved, two print heads are whole when switching alternately switches at an angle, ensure that charging, the concentricity of discharging are constant, improves the stability of switching.
Description
Technical field
The present invention relates to the three-dimensional printers based on melting fused deposition rapid moulding technique, and in particular to a kind of switching of V-type is beaten
Print the extra quality extrusion system of head.
Background technique
Three-dimensional printer based on melting fused deposition rapid moulding technique is the plastics silk for the use of diameter being 1~2mm or so,
Plastics silk melt extruded is printed at the filament of 0.2~0.4mm or so and successively by the printing extruder head that computer controls
It is piled into three-dimension object.In general, melting fused deposition rapid moulding technique needs to add support when manufacture has the object of cantilever design.
If three-dimensional printer, which prints extruder head, only has single melting Channel design structure, the object of printing and support can only use same material
To construct.Although support section can be made to become more loose by controlling the method for operation of print head in print procedure
To achieve the purpose that convenient for removing, but due to being difficult to after the completion of printing on the boundary of object and support using same material
Identification causes removing difficult, and support also be easy to cause object fine structure to damage when removing.In order to solve this problem, currently, base
Dual channel structure is mostly used in the three-dimensional printer printing extruder head of melting fused deposition rapid moulding technique, one of runner is used for
The model formings material such as melting extrusion ABS plastic, another runner can be easy physics removing or chemical stripping for melting extrusion
Backing material, when removing will not damage molded model；When needing to squeeze out which kind of material in print procedure, system control
Corresponding print head is switched to working condition by switching mechanism, realizes the printing alternate of two print heads.
The double print head automatic switching control equipments of published three-dimensional printer can be divided into two classes: one kind is that two print heads begin
It is in sustained height eventually, the switching of double print heads is only realized by the working condition of two feeding material components of switching；Another kind of is two
A print head not only has switched the working condition of two feeding material components when automatically switching, but also the difference in height of print head also achieves
Switching.
One, two print heads are fixed, and the working condition for only switching two feeding material components realizes the switching of double print heads,
It avoids issuable altitude location error during switching print head and influences the dimensional accuracies of printing objects.But this knot
Two print heads of structure level difficulty, are easy to scratch molded part in print procedure, and the salivation of nozzle can serious shadow
The surface quality of model is rung, while the working condition switching of feeding material component is needed by the mechanical mechanism of a set of complexity and by outer
Power is just able to achieve switching, increases the weight of extrusion system, constrains the raising of print speed significantly.
Two, the working condition of two feeding material components is not only had switched when two print head switchings, while relying on silk convection current
The thrust in road or the driving mechanism added realize the switching of two print head differences in height, avoid in print procedure and print
Head, which scrapes, arrives molded part, reduces influence of the nozzle salivation to model surface quality.But runner is pushed away by silk
The switching of print head difference in height is realized in power effect, be easy to be influenced to cause by material itself thermal property thrust size variation to
The reliability of print head work is reduced, and realizes the reset after print head switching by spring mechanism, mechanical part is added
Work and assembly precision have higher requirements, and quality is difficult to control, and certainly will influence the precision of two print head switching height；Pass through driving
Mechanism realizes the switching of two print head differences in height, and the machine driving by a set of complexity, positioning mechanism is needed even to increase drive
Dynamic motor is just able to achieve, and is increased cost, the volume and weight of extrusion system, is greatly constrained the raising of print speed.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention provides a kind of extra quality extrusion system of V-type switching print head, only makes
With a driving motor and not by any external force except device, two print heads simple, accurate, reliable can be realized
It is automatic alternately to switch, and then realize the printing alternate of two kinds of silks.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of extra quality extrusion system of V-type switching print head, including pedestal, material extrusion motor, active-feeding wheel, miniature guide rail
Sliding block, print head assembly, switching and booting component and changeover module, material extrusion motor are mounted on the pedestal back side, the installation of active-feeding wheel
It is stretched out in the positive shaft of pedestal in material extrusion motor, miniature guide rail sliding block includes mutually matched guide rail and sliding block, two guide rails
It is symmetrically arranged in a manner of in vertical angle in active-feeding wheel two sides, two print head assemblies are vertically installed at two respectively
On a sliding block, changeover module includes the changer lever that is mounted on the pedestal back side and can horizontally slip between second point at first point,
Changer lever is equipped with the low track groove in intermediate high two sides, and one end of two switching and booting components connects with two print head assemblies respectively
It connects, the other end is set in track groove, and as the switching of changer lever is alternately located in the top surface or bottom surface of track groove, with driving
Two print head assemblies do reversed elevating movement along two guide rails respectively.
As an improvement of the present invention, the print head assembly include small substrate, guide component, driven wheel assembly and
Wire vent component is melted, small substrate is fixed on sliding block, and guide component is vertically installed at small substrate top, driven wheel assembly activity peace
In the middle part of small substrate, melting wire vent component is vertically installed at small substrate lower part.
As an improvement of the present invention, the active-feeding wheel is equipped with the serrate slot for constraining, being oriented to silk.
The design of serrate slot also plays the role of guiding to silk other than providing enough frictional force for feeding, and silk is made to move rail
Mark is accurate.
As an improvement of the present invention, the guide component includes guide fixed block, connector and passage, and guide is solid
Determine block to be fixed on small substrate, connector is fixed on guide fixed block top surface vertically, and passage upper end is through guide fixed block and connector
Connection, the adjacent active-feeding wheel setting in passage lower end, and when print head assembly is in print state, guide tube hub and master
The tooth form groove center of dynamic drawing-inroller is concentric.
As an improvement of the present invention, the melting wire vent component includes flow-path tube, melting device and nozzle, melting device
It is fixed on small substrate, nozzle is fixed on melting device bottom surface vertically, and flow-path tube lower end is connected to through melting device with nozzle, on flow-path tube
Adjacent active-feeding wheel is held to be arranged, and when print head assembly is in print state, the tooth of runner tube hub and active-feeding wheel
Shape groove center is concentric.
As an improvement of the present invention, the driven wheel assembly include adjust screw, pressure spring, driven wheel mounting rack and
Driven wheel, small substrate are equipped with the boss with sliding slot far from the side of active-feeding wheel, and driven wheel mounting rack is slidably mounted on boss
Sliding slot in, adjust screw and pass through boss, be spirally connected after pressure spring with driven wheel mounting rack, driven wheel is rotatably installed in driven wheel installation
On frame.
As an improvement of the present invention, the switching and booting component includes elevating lever and is rotatably installed in elevating lever
The bearing in portion, the pedestal are equipped with the waist-shaped hole coaxial or parallel with center line of guide rail, elevating lever one end and printhead cluster
Part is fixedly connected, and the other end is set in the track groove of changer lever after passing through waist-shaped hole, and bearing element is assemblied in waist-shaped hole.
As an improvement of the present invention, the changeover module further includes changer lever leading truck and spring-loaded plunger, switching
Bar leading truck is fixed on the pedestal back side, and changer lever is slidedly assemblied on changer lever leading truck, and spring-loaded plunger is fixed on changer lever and leads
To on frame, spring-loaded plunger is equipped with an elastic steel ball, is arranged at intervals with the left lock hole to match with steel ball on changer lever
With right lock hole, when changer lever is moved at first, steel ball is caught in left lock hole；When changer lever is moved to second point, steel
Pearl is caught in right lock hole.
The innovative design of the present invention movement angle structure of two print heads, be used only a driving motor and not by
Any external force except device simple, accurate, reliable can realize that the automatic of two print heads alternately switches, realize two kinds
The printing alternate of silk.Compared with prior art, it has the advantages that
One, two print head designs are installed at symmetrical angle structure, is realized complete while switching print head difference in height
At the synchronism switching of feeding material component working condition, overall structure is simple and reliable, it is easy to accomplish；
Two, two print heads are whole when switching alternately switches at an angle, ensure that charging, discharging concentricity not
Become, improves the stability of switching；
As soon as a feeding driving motor three, is used only, rotation direction and corresponding feeding material component position by change motor
It is able to achieve the alternating switching feeding of two kinds of silks, greatly reduces the weight and cost of extrusion system；
Four, print head switching precision depends on the precision of track groove on changer lever, Conventional machining methods
The precision for guaranteeing track groove is guaranteeing to also reduce processing cost while switching precision.
Five, active print head is provided with the measures such as positioning, locking after switching in place, and switching and booting component and miniature guide rail are sliding
Block provides a reliable and stable guide support for the switching of print head, when guaranteeing to realize work while switching precision
Reliability.
Detailed description of the invention
Fig. 1 is the overall structure axonometric drawing of extrusion system forward direction；
Fig. 2 is the overall structure axonometric drawing of extrusion system backwards；
Fig. 3 is the decomposition texture schematic diagram of extrusion system, due to the left and right print head assembly symmetrical configuration of system, therefore is illustrated
Right print head assembly is only decomposed in figure；
Fig. 4 is extrusion system forward direction partial sectional view；
Fig. 5 is driven wheel assembly and active-feeding wheel matching relationship enlarged view；
Fig. 6 is the axial sectional view of print head assembly；
Fig. 7 is switching and booting component and changeover module matching relationship enlarged view；
Fig. 8 is positive partial sectional view when right print head assembly is in print state；
Fig. 9 is the R-R of changeover module in Fig. 8 to sectional view；
Figure 10 is positive partial sectional view when left print head assembly is in print state；
Figure 11 is the R '-R ' of changeover module in Figure 10 to sectional view.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figures 1 to 9, a kind of extra quality extrusion system of V-type switching print head, including pedestal 1, material extrusion motor 2, master
Dynamic drawing-inroller 3, two miniature guide rail sliding blocks symmetrically arranged on the left and the right, 4, two print head assemblies 5 and two switching and booting components 6,
And the changeover module being mainly made of changer lever 7, changer lever leading truck 8 and spring-loaded plunger 9.Material extrusion motor 2 is mounted on pedestal 1
The back side, machine shaft stretches to the front of pedestal 1, and active-feeding wheel 3 is fixedly mounted on machine shaft, which is provided with for about
Beam, the serrate slot for being oriented to silk 10；Miniature guide rail sliding block 4 includes being fixed on the positive guide rail 401 of pedestal 1 and along guide rail 401
The sliding block 402 of heart line sliding, two guide rails 401 are symmetrically arranged in a manner of in vertical angle in 3 two sides of active-feeding wheel,
Preferably, two V-shaped arrangements of guide rail 401；Two print head assemblies 5 are vertically-mounted respectively to be fixed on two sliding blocks 402, by
The mobile driving switching and booting component 6 drive print head assembly 5 of changer lever 7 is in along 401 centerline direction of guide rail in changeover module
Certain angle alternately switches, and is determined by the spring-loaded plunger 9 being fixed on changer lever leading truck 8 changer lever 7 after switching in place
The accurate switching to print head assembly 5 is realized in position.Switching mechanism structure is simple, passes through the symmetrical folder to left and right print head assembly
The completion left and right while switching of print head assembly difference in height is realized in the design that track is gone up and down when corner structure mounting design and switching
The synchronism switching of driven wheel assembly, reliable in action are easily achieved.
Print head assembly 5 is mainly by small substrate 501, guide component 502, driven wheel assembly 503 and melting wire vent component
504 compositions.Small 501 back side of substrate, which is adjacent to, to be fixed on sliding block 402, can do straight line along 401 centerline direction of guide rail with sliding block 402
Movement.Guide component 502 is vertically installed at small 501 top of substrate, including guide fixed block 5021, connector 5022 and passage
5023, guide fixed block 5021 is fixed on small 501 front of substrate, and connector 5022 is fixed on 5021 top surface of guide fixed block vertically,
5023 upper end of passage is connected to through guide fixed block 5021 with connector 5022, and the adjacent active-feeding wheel 3 in lower end is arranged, and pair
When the print head assembly 5 answered is in print state, center and the tooth form groove center of active-feeding wheel 3 are concentric.Driven wheel assembly
503 are arranged in small 501 middle part of substrate, when corresponding print head assembly 5 is in print state, with 3 axle center of active-feeding wheel
It is in the same horizontal position, main includes adjusting screw 5031, pressure spring 5032, driven wheel mounting rack 5033,5034 and of driven wheel
Circlip 1；Small substrate 501 is equipped with the boss 5011 with sliding slot far from the side of active-feeding wheel 3, adjusts screw 5031 and wears
It is spirally connected after the through-hole crossed on boss 5011, pressure spring 5032 with driven wheel mounting rack 5033, while driven wheel mounting rack 5033 is spirally connected
End limit can horizontally slip along the chute in the sliding slot of boss 5011, and the compression of pressure spring 5032 is adjusted by adjusting screw 5031
Length adjusts the center of driven wheel 5034 and active-feeding wheel 3 away to reach adjusting driven wheel 5034 to 10 pretightning force of silk
Effect, also improve printing different-diameter deviation material adaptability.Melting wire vent component 504 is vertically installed at small substrate
501 lower parts, including flow-path tube 5041, melting device 5042 and nozzle 5043, melting device 5042 are fixed on small 501 front of substrate, spray
Mouth 5043 is fixed on 5042 bottom surface of melting device vertically, and 5041 lower end of flow-path tube is connected to through melting device 5042 with nozzle 5043, runner
The adjacent active-feeding wheel 3 in 5041 upper end of pipe is arranged, and when corresponding print head assembly 5 be in print state, center and
The tooth form groove center of active-feeding wheel 3 is concentric, and the flow-path tube 5041 of big L/D ratio and the split-type design of nozzle 5043 reduce
Whole difficulty of processing, improves the machining accuracy of part.
Switching and booting component 6 includes elevating lever 601, bearing 602, axle sleeve 603 and circlip 2 604.601 one end of elevating lever with
Small substrate 501 is fixedly connected, and other end slide fit after corresponding waist-shaped hole 101 on pedestal 1 is inserted in the track on changer lever 7
In slot 701, bearing 602 is limited by axle sleeve 603 and circlip 2 604 at 601 middle part of elevating lever, and is embedded just below in pedestal 1
In waist-shaped hole 101；101 central axis of waist-shaped hole and 401 center line of guide rail are coaxial or parallel, and bearing 602 and waist-shaped hole 101 are sliding
Dynamic cooperation, when switching, elevating lever 601 is rolled along waist-shaped hole 101 with dynamic bearing 602 and is gone up and down, and is reduced print head assembly 5 and was switched
The torsion that changer lever 7, elevating lever 601 are subject in journey improves switching positioning accuracy and reliability.
Changeover module includes changer lever 7, changer lever leading truck 8 and spring-loaded plunger 9.Changer lever leading truck 8 is mounted on pedestal 1
The back side, 7 slide fit of changer lever is mounted in changer lever leading truck 8 and is bonded with pedestal 1, so that changer lever 7 can only do left and right directions
Horizontal movement；Spring-loaded plunger 9 includes column sleeve, steel ball 901 and spring 902, and column sleeve one end is fixed on changer lever leading truck 8,
The other end is equipped with the aperture that stretches out for 901 part of steel ball, and steel ball 901 passes through spring 902 and is mounted in column sleeve, and when stress can be in column
Set and the lower inside and outside movement of the constraint of spring 902；Be arranged at intervals with left lock hole 703 and right lock hole 702 on changer lever 7, and with bullet
Spring plunger 9 is in same level, and when changer lever 7 completes switching action every time, the steel ball 901 on spring-loaded plunger 9 is in spring
In the lower insertion lock hole of 902 elastic force effect, realizes the locking of changer lever 7, prevent changer lever 7 from transporting due to vibrating
It is dynamic, to influence printing precision.The low track groove 701 in intermediate high two sides is additionally provided on changer lever 7, track groove 701 is designed to rank
Ladder type ramp shape, so that being respectively at the top of track groove 701 positioned at two elevating levers 601 of pedestal 1 or so after switching every time
Face or bottom surface, to realize the switching for 5 difference in height of left and right print head assembly being attached thereto.
When print head assembly 5 switches, as the horizontal orientation of changer lever 7 moves, the track groove 701 of changer lever 7, which drives, to be risen
Drop bar 601 is moved along 101 central axial direction of waist-shaped hole on pedestal 1, to drive the small substrate 501 of connection fixed thereto
And entire print head assembly 5 is along 401 centerline direction synchronizing moving of guide rail.After changer lever 7 switches in place, on changer lever 7
Lock hole and 9 center of spring-loaded plunger be on same axis, the steel ball 901 on spring-loaded plunger 9 902 elastic force of spring act under
It is embedded in lock hole, by 7 reliable location of changer lever, left and right elevating lever 601 is respectively at the top surface and bottom of track groove 701 at this time
Face, the print head assembly 5 of left and right two are stablized a maximum difference in height position.Two miniature guide rail sliding blocks 4 are symmetrical at angle α
Arrangement, so that print head assembly 5 not only has the componental movement up and down in vertical direction in handoff procedure, but also in the horizontal direction
There is also left and right componental movement, while reaching the switching of upper-lower height difference, also complete silk 10 and the contact of active-feeding wheel 3 or
Person is detached from, and realizes the switching of 503 working condition of left and right driven wheel assembly, it is ensured that active-feeding wheel 3 will not scrape non-print shape
Silk 10 under state.As can be seen that in 5 handoff procedure of print head assembly, connector 5022, flow-path tube 5041, melts passage 5023
It is in a vertical state always to melt the silk circulation passage that device 5042 and nozzle 5043 are constituted, will not deflect, printing angle begins
Vertical eventually, compared in such a way that spinwriter carries out height switching, switching precision is easily guaranteed that.
It is illustrated below with reference to specific handoff procedure of the Fig. 8 to Figure 11 to print head assembly 5, (R) after being marked in figure
(L) only refers only to right side and left side:
Referring to Fig. 8 and Fig. 9, when extrusion system is fixed except extrusion system with direction A movement and by being mounted on
When changer lever 7 is switched to position shown in Fig. 8 by right block 11 (R), right side print head assembly 5 along right rail 401 to left down
Side is moved to lower limit and active-feeding wheel 3 cooperates, while left side print head assembly 5 is moved along left rail 401 to upper left side
Supreme spacing place generates difference in height Δ h, right side print head assembly 5 at this time between right nozzle 5043 (R) and left nozzle 5043 (L)
In running order (print state), (R) the wire vent axis of right nozzle 5043 are less than with 3 axle center normal distance L of active-feeding wheel
(L) the wire vent axis of left nozzle 5043 and 3 axle center normal distance L ' of active-feeding wheel.In handoff procedure, changer lever 7 is negative side
To movement, right elevating lever 601 (R) slides into right side bottom surface, while left lifting from 701 middle top surface of track groove of changer lever 7
Bar 601 (L) slides into middle top surface (Fig. 8 state) from 701 left side bottom surface of track groove of changer lever 7, drives left and right printhead cluster
Part moves up and down the switching for realizing print head.At the same time, the right lock hole 702 on changer lever 7 moves at spring-loaded plunger 9,
Steel ball 901 in spring-loaded plunger 9 is closely pressed into right lock hole 702 under the elastic force effect of spring 902, is completed to changer lever 7
Locking, ensure that left and right print head assembly switching accuracy and work reliability.
Referring to Figure 10 to Figure 11, when extrusion system is fixed except extrusion system with direction A ' movement and by being mounted on
Left block 11 (L) when changer lever 7 is switched to position shown in Figure 10, left side print head assembly 5 along left rail 401 to the right
Lower section is moved to lower limit and active-feeding wheel 3 cooperates, while right side print head assembly 5 is moved along right rail 401 to upper right side
Supreme spacing place is moved, generates difference in height Δ h ', left side printhead cluster between left nozzle 5043 (L) and right nozzle 5043 (R) at this time
Part 5 is in running order, and (L) the wire vent axis of left nozzle 5043 is less than right nozzle with 3 axle center normal distance L ' of active-feeding wheel
5043 (R) wire vent axis and 3 axle center normal distance L of active-feeding wheel.In handoff procedure, left elevating lever 601 (L) is from switching
701 middle top surface of track groove of bar 7 slides into left side bottom surface, while right elevating lever 601 is on the right side of the track groove 701 of changer lever 7
Bottom surface slides into middle top surface (Figure 10 state), and driving left and right print head assembly moves up and down the switching for realizing print head.With this
Meanwhile the left lock hole 703 on changer lever 7 moves at spring-loaded plunger 9, the steel ball 901 in spring-loaded plunger 9 is in spring 902
It is closely pressed into left lock hole 703 under elastic force effect, completes the locking to changer lever 7, ensure that left and right print head assembly switches
Accuracy and work reliability.
Changeover module of the invention is in such a way that external block pushes changer lever 7 to translate, two print heads in driving left and right
5 synchronous backward of component moves up and down, to realize the difference in height switching and driven wheel assembly of the print head assembly 5 of left and right two
The switching of 503 working conditions；Meanwhile 5 entirety of the print head assembly of left and right two switches over, and ensure that the precision and stabilization of switching
Property.
It is to be appreciated that term " on ", "lower" in the present embodiment, "front", "rear", "left", "right", "vertical", " water
It is flat ", "inner", "outside", "top", the instructions such as "bottom" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description embodiments of the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to embodiments of the present invention
System.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (8)
1. a kind of extra quality extrusion system of V-type switching print head, it is characterised in that: including pedestal (1), material extrusion motor (2), active
Drawing-inroller (3), miniature guide rail sliding block (4), print head assembly (5), switching and booting component (6) and changeover module, material extrusion motor (2)
It is mounted on pedestal (1) back side, active-feeding wheel (3) is mounted on material extrusion motor (2) and stretches out in pedestal (1) positive shaft, miniature
Guide rail slide block (4), print head assembly (5) and switching and booting component (6) are two, and miniature guide rail sliding block (4) includes phase interworking
The guide rail (401) and sliding block (402) of conjunction, two guide rails (401) are symmetrically arranged in a manner of in vertical angle and are actively sending
Material wheel (3) two sides, two print head assemblies (5) are vertically installed at respectively on two sliding blocks (4), and changeover module includes being mounted on base
Seat (1) back side and can be in first point of changer lever to horizontally slip between second point (7), changer lever (7) is by being mounted on extrusion
Fixed block except system pushes realization to horizontally slip, and changer lever (7) is equipped with the low track groove in intermediate high two sides
(701), one end of two switching and booting components (6) is connect with two print head assemblies (5) respectively, and the other end is set in track
In slot (701), and as the switching of changer lever (7) is alternately located in the top surface or bottom surface of track groove (701), with two printings of driving
Head assembly (5) does reversed elevating movement along two guide rails (401) respectively.
2. a kind of extra quality extrusion system of V-type switching print head according to claim 1, it is characterised in that: described beats
Print head assembly (5) includes small substrate (501), guide component (502), driven wheel assembly (503) and melts wire vent component (504),
Small substrate (501) is fixed on sliding block (402), and guide component (502) is vertically installed at small substrate (501) top, driven wheel group
Part (503) is movably arranged in the middle part of small substrate (501), and melting wire vent component (504) is vertically installed at small substrate (501) lower part.
3. a kind of extra quality extrusion system of V-type switching print head according to claim 2, it is characterised in that: the master
Dynamic drawing-inroller (3) are equipped with the serrate slot for constraining, being oriented to silk (10).
4. a kind of extra quality extrusion system of V-type switching print head according to claim 3, it is characterised in that: described leads
Material component (502) includes guide fixed block (5021), connector (5022) and passage (5023), and guide fixed block (5021) is fixed
On small substrate (501), connector (5022) is fixed on guide fixed block (5021) top surface vertically, and passage (5023) upper end is through leading
Material fixed block (5021) is connected to connector (5022), adjacent active-feeding wheel (3) setting in passage (5023) lower end, and is being printed
When head assembly (5) is in print state, passage (5023) center and the tooth form groove center of active-feeding wheel (3) are concentric.
5. a kind of extra quality extrusion system of V-type switching print head according to claim 3, it is characterised in that: described is molten
Blend-out silk component (504) includes flow-path tube (5041), melting device (5042) and nozzle (5043), and melting device (5042) is fixed on small
On substrate (501), nozzle (5043) is fixed on melting device (5042) bottom surface vertically, and flow-path tube (5041) lower end is through melting device
(5042) it is connected to nozzle (5043), adjacent active-feeding wheel (3) setting in flow-path tube (5041) upper end, and in print head assembly
(5) when being in print state, flow-path tube (5041) center and the tooth form groove center of active-feeding wheel (3) are concentric.
6. a kind of extra quality extrusion system of V-type switching print head according to claim 2, it is characterised in that: it is described from
Drive wheel assemblies (503) include adjusting screw (5031), pressure spring (5032), driven wheel mounting rack (5033) and driven wheel (5034),
Small substrate (501) is equipped with the boss (5011) with sliding slot far from the side of active-feeding wheel (3), and driven wheel mounting rack (5033) is sliding
It is dynamic to be mounted in the sliding slot of boss (5011), it adjusts screw (5031) and passes through boss (5011), pressure spring (5032) afterwards and driven wheel
Mounting rack (5033) is spirally connected, and driven wheel (5034) is rotatably installed on driven wheel mounting rack (5033).
7. a kind of extra quality extrusion system of V-type switching print head according to claim 1, it is characterised in that: described cuts
Changing guide assembly (6) includes elevating lever (601) and the bearing (602) being rotatably installed in the middle part of elevating lever (601), the pedestal
(1) waist-shaped hole (101) coaxial or parallel with guide rail (401) center line, elevating lever (601) one end and print head assembly are equipped with
(5) it is fixedly connected, the other end is set in the track groove (701) of changer lever (7) after passing through waist-shaped hole (101), bearing (602) rolling
It is dynamic to be assemblied in waist-shaped hole (101).
8. a kind of extra quality extrusion system of V-type switching print head according to claim 1, it is characterised in that: described cuts
Changing component further includes changer lever leading truck (8) and spring-loaded plunger (9), and changer lever leading truck (8) is fixed on pedestal (1) back side, cuts
It changes bar (7) to be slidedly assemblied on changer lever leading truck (8), spring-loaded plunger (9) is fixed on changer lever leading truck (8), spring stack
It fills in (9) and is equipped with an elastic steel ball (901), the left locking to match with steel ball (901) is arranged at intervals on changer lever (7)
Hole (703) and right lock hole (702), when changer lever (7) is moved at first, steel ball (901) is caught in left lock hole (703)；
When changer lever (7) is moved to second point, steel ball (901) is caught in right lock hole (702).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110884128B (en) * | 2019-10-18 | 2024-05-03 | 深圳市捷泰技术有限公司 | Double-head feeding automatic switching printing device |
| CN111633985B (en) * | 2020-06-05 | 2022-03-15 | 中科院广州电子技术有限公司 | Automatic switch 3D printer extrusion system who prints |
| CN112606386B (en) * | 2020-11-30 | 2022-07-08 | 深圳市创想三维科技股份有限公司 | Feeding mechanism and 3D printer |
| CN112757636A (en) * | 2020-12-30 | 2021-05-07 | 深圳市纵维立方科技有限公司 | Printing head switching assembly and printer |
| CN112776331A (en) * | 2021-01-20 | 2021-05-11 | 浙江嘉兴智叠智能科技有限公司 | Small-sized spray head folding and unfolding device for 3D printer |
| CN113001974B (en) * | 2021-03-15 | 2023-02-28 | 深圳市创想三维科技股份有限公司 | Push type double-nozzle assembly of 3D printer and 3D printer |
| CN114734632B (en) * | 2022-03-14 | 2024-01-05 | 深圳市纵维立方科技有限公司 | Printing head and three-dimensional printer |
| CN114589924B (en) * | 2022-03-14 | 2024-01-05 | 深圳市纵维立方科技有限公司 | Control method of three-dimensional printer, three-dimensional printer and readable storage medium |
| CN115091750B (en) * | 2022-07-13 | 2024-01-05 | 深圳市创想三维科技股份有限公司 | Double-spray-head device and 3D printing equipment |
| CN115214137B (en) * | 2022-07-13 | 2023-08-01 | 深圳市创想三维科技股份有限公司 | Switching device and 3D printing equipment |
| CN117922006A (en) * | 2024-02-26 | 2024-04-26 | 深圳云疆智造科技有限公司 | 3D prints shower nozzle and 3D printing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102922745B (en) * | 2012-11-06 | 2015-03-11 | 中科院广州电子技术有限公司 | Three-dimensional printer extrusion head capable of feeding in switching mode |
| RU2609179C1 (en) * | 2015-09-04 | 2017-01-30 | Виктор Владимирович ИСУПОВ | Method of printing on three-dimensional jet printer |
| PL227049B1 (en) * | 2015-09-28 | 2017-10-31 | 3D Gence Spółka Z Ograniczoną Odpowiedzialnością | Mechanism for switching heads in the two-head spatial printer |
| CN105291436B (en) * | 2015-11-18 | 2017-08-25 | 青岛尤尼科技有限公司 | The mariages printhead and its method for handover control of a kind of 3D printer |
| CN106626388A (en) * | 2017-02-10 | 2017-05-10 | 昆山市奇迹三维科技有限公司 | Double-spray-head device of 3D (three-dimensional) printer |
| CN106985391A (en) * | 2017-04-24 | 2017-07-28 | 安徽机电职业技术学院 | A kind of double nozzle components of 3D printer |
| CN108582780B (en) * | 2018-07-26 | 2019-03-22 | 中科院广州电子技术有限公司 | A kind of three-dimensional printer extrusion system automatically switching print head |
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