CN112810144A - 3D print head auto-change over device - Google Patents
3D print head auto-change over device Download PDFInfo
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- CN112810144A CN112810144A CN202011529012.5A CN202011529012A CN112810144A CN 112810144 A CN112810144 A CN 112810144A CN 202011529012 A CN202011529012 A CN 202011529012A CN 112810144 A CN112810144 A CN 112810144A
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- fixing block
- cavity
- limiting
- assembly
- seat
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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
- 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
- B29C64/10—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]
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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
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Ink Jet (AREA)
Abstract
The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printer nozzle switching device. The device comprises a mounting seat, a throat pipe, a heating assembly, a clamping assembly, a rotating seat, a limiting assembly and a driving assembly; a cavity is arranged in the mounting seat, the lower end of the mounting seat is of an open structure, and one end of the throat pipe penetrates through the upper end of the mounting seat and is positioned in the cavity; the heating assembly is fixedly arranged in the cavity, the upper end and the lower end of the heating assembly are respectively provided with a feeding hole and a discharging hole, and the feeding hole is communicated with one end of the throat pipe, which is positioned in the cavity; the clamping component is fixedly arranged at the lower end of the mounting seat; the rotating seat is rotatably installed in the clamping assembly through a rotating bearing. The spray head switching device is matched with the mounting seat, the throat pipe, the heating assembly, the clamping assembly and the rotating seat, the spray head switching device is high in integrity and small in occupied space, and the spray head switching device is arranged in the mounting seat in a uniformly distributed mode and is safer to use.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printer nozzle switching device.
Background
3D printing is a technique for building objects by layer-by-layer printing using bondable materials such as powdered metals or plastics based on digital model files.
The existing 3D printing equipment is provided with a plurality of groups of spray heads in order to realize the mixed printing of multicolor and multiple materials, and the plurality of groups of spray heads are installed through a spray head switching device.
For example, in the multi-nozzle switching device of the 3d printer disclosed in patent number "CN 201922274474.6", a plurality of groups of driving mechanisms are adopted to drive each group of nozzle assemblies, so that the occupied space is large and the manufacturing cost is high; and its each group shower nozzle need use a set of connecting pipe respectively to be connected with the feedway of 3D printer, and the structure is complicated, and the connecting pipe of connecting shower nozzle and feed mechanism exposes outside shower nozzle auto-change over device, and the overall arrangement is mixed and disorderly, has the potential safety hazard.
Disclosure of Invention
Aiming at the problems, the invention provides a 3D printer nozzle switching device which comprises a mounting seat, a throat pipe, a heating assembly, a clamping assembly, a rotating seat, a limiting assembly and a driving assembly, wherein the throat pipe is arranged on the mounting seat;
a cavity is arranged in the mounting seat, the lower end of the mounting seat is of an open structure, and one end of the throat pipe penetrates through the upper end of the mounting seat and is positioned in the cavity;
the heating assembly is fixedly arranged in the cavity, the upper end and the lower end of the heating assembly are respectively provided with a feeding hole and a discharging hole, and the feeding hole is communicated with one end of the throat pipe, which is positioned in the cavity;
the clamping component is fixedly arranged at the lower end of the mounting seat;
the rotary seat is rotatably installed in the clamping assembly through a rotating bearing, the upper end of the rotary seat can be movably attached to the end part of the heating assembly, and the attachment part of the rotary seat and the heating assembly is sealed;
the upper end of the rotating seat is provided with a plurality of groups of second through holes and a plurality of groups of second mounting grooves, and the plurality of groups of second through holes and the plurality of groups of second mounting grooves are arranged in an annular array; the lower end of the rotating seat is provided with a plurality of groups of first mounting grooves, and the central axis of each group of first mounting grooves is superposed with the central axis of one group of second through holes respectively; each group of the second through holes can be respectively communicated with a discharge hole;
the driving assembly is arranged on the clamping assembly and is in transmission connection with the rotating seat;
each group the spacing subassembly sets up respectively in a set of second mounting groove, and the one end joint that the second mounting groove was kept away from to spacing subassembly can be at the heating element tip.
Furthermore, two groups of mounting holes are symmetrically and parallelly formed in the side wall of the mounting seat, a first through hole is formed in the upper end of the mounting seat, and the first through hole is communicated with the cavity;
a plurality of groups of heat dissipation holes are formed in the side wall of the cavity and are arranged in an annular array; and an internal thread is arranged on the inner wall of the cavity close to the lower end of the mounting seat.
Further, the bottom of cavity is provided with first stopper, first stopper sets up to the loop configuration, be provided with the joint interface on the first stopper.
Furthermore, the throat pipe is arranged in the first through hole, two ends of the throat pipe are respectively located at the upper end of the mounting seat and inside the cavity, a group of fixing bolts are respectively installed on two sides of the throat pipe, and the throat pipe is fixed in the first through hole through the fixing bolts at the end part.
Further, the heating assembly comprises a heating device, a first fixing block and a second fixing block;
the heating device is arranged in the cavity, and the end part of the heating device can be attached to the first limiting block; the first fixing block is arranged at the upper end of the heating device and is of an annular columnar structure, and the central axis of the first fixing block is superposed with the central axis of the feeding hole of the heating device; the end part of the throat pipe can be clamped in the first fixing block, and the throat pipe can be communicated with the feeding hole;
the second fixed block is arranged at the upper end of the heating device and connected with the side wall of the first fixed block, and the second fixed block can be clamped and fixed in the clamping port.
Furthermore, a plurality of groups of first limiting grooves are arranged at the lower end of the heating device, and are arranged in an annular array;
the discharge hole is not overlapped with the central axis of the heating device.
Furthermore, the heating assembly further comprises a third fixed block, the third fixed block is of an annular structure, the side wall of the third fixed block is provided with an external thread, the external thread can be matched with the internal thread, the third fixed block can be installed in the cavity, and one end of the third fixed block can be abutted against the heating device;
a plurality of groups of second limiting grooves are formed in one surface, far away from the heating device, of the third fixing block, and the second limiting grooves are arranged in an annular array.
Furthermore, the clamping assembly comprises a fourth fixing block and a fifth fixing block;
the fourth fixed block is arranged to be of an annular columnar structure, and the fifth fixed block is sleeved on the outer wall of one end of the fourth fixed block; the inner wall of the fourth fixed block is also provided with a rotating bearing;
the side wall of the rotating seat is connected with the inner wall of the rotating bearing;
one end of the fourth fixing block can be inserted into the end part of the cavity, the fifth fixing block can be attached to the lower end of the mounting seat, and the fourth fixing block and the fifth fixing block can be fixedly connected through a fixing bolt;
and a third mounting groove is formed in one end, far away from the cavity, of the fourth fixing block.
Further, the driving assembly comprises a motor and a driving wheel;
the motor is installed in the third mounting groove, the drive wheel is sleeved on the motor output shaft, and the drive wheel is in transmission connection with the rotary seat through a transmission belt.
Further, the limiting assembly comprises a second limiting block and a spring;
the second limiting block is arranged in a spherical structure, movably clamped in the second mounting groove and elastically connected with the bottom of the second mounting groove through a spring;
the second limiting block can be clamped in the first limiting groove.
The invention has the beneficial effects that:
1. the spray head switching device is matched with the mounting seat, the throat pipe, the heating assembly, the clamping assembly and the rotating seat, the spray head switching device is high in integrity and small in occupied space, and the spray head switching device is arranged in the mounting seat in a uniformly distributed mode and is safer to use;
2. the limiting assembly is arranged between the rotating seat and the heating assembly and used for limiting the rotating seat rotating to a preset position, so that the spray head switching device is safer and more stable to use;
3. the turntable bearing is concentrically arranged on one surface, close to the heating device, of the third fixed block, so that the third fixed block can be directly arranged at an optimal preset position during installation, the optimal fixing effect on the heating device is achieved, and the using effect is better;
4. through the second through-hole and the first mounting groove that the city annular array set up mutual intercommunication on the roating seat, the melting of export in the follow heating device discharge gate is printed the raw materials and can be followed second through-hole and first mounting groove directly and get into the shower nozzle, and the melting raw materials flow is short, and output speed is fast, and follow-up clearance is more convenient.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a side view of a spray head switching device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a switching device of a shower head according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first perspective of a mount according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram illustrating a second perspective of a mount according to an embodiment of the invention;
FIG. 5 shows a schematic structural view of a throat according to an embodiment of the present invention;
FIG. 6 shows a schematic structural view of a heating assembly according to an embodiment of the present invention;
FIG. 7 is a schematic view showing the structure of a heating apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a third fixing block according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a latch assembly according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a rotary base according to an embodiment of the present invention.
In the figure: 1. a mounting seat; 101. a cavity; 102. a first through hole; 103. mounting holes; 104. heat dissipation holes; 105. an internal thread; 2. a throat; 3. a heating assembly; 4. a clamping assembly; 5. a rotating base; 501. a second through hole; 502. a first mounting groove; 503. a second mounting groove; 6. a limiting component; 7. a drive assembly; 8. a first stopper; 801. a card interface; 9. fixing the bolt; 10. a heating device; 1001. a feed port; 1002. a discharge hole; 1003. a first limit groove; 11. a first fixed block; 12. a second fixed block; 13. a third fixed block; 1301. a second limit groove; 1302. an external thread; 15. a fourth fixed block; 1501. a third mounting groove; 16. a fifth fixed block; 17. a rotating bearing; 18. a motor; 19. a driving wheel; 20. a transmission belt; 21. a second limiting block; 22. a spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a 3D printer nozzle switching device, which comprises an installation seat 1, a throat pipe 2, a heating assembly 3, a clamping assembly 4, a rotating seat 5, a limiting assembly 6 and a driving assembly 7, and is exemplarily shown in fig. 1 and fig. 2.
A cavity 101 is formed in the mounting seat 1, the lower end of the mounting seat 1 is of an open structure, and one end of the throat pipe 2 penetrates through the upper end of the mounting seat 1 and is located in the cavity 101; the mounting seat 1 can be mounted on a three-dimensional transmission mechanism of a 3D printer, and the three-dimensional transmission mechanism is used for driving the mounting seat 1 to do three-dimensional motion in the direction of an X, Y, Z axis; the end of the throat 2 away from the cavity 101 may be connected to a feeding device of a 3D printer, the feeding device being configured to provide powder material required for molding to the nozzle.
The heating component 3 is fixedly arranged in the cavity 101, and one end of the heating component 3 is communicated with one end of the throat pipe 2 positioned in the cavity 101; the heating component 3 is used for heating and melting the printing raw material which is conveyed by the feeding device and enters the interior of the feeding device through the throat pipe 2 so as to be conveniently processed by the subsequent process.
The clamping assembly 4 is fixedly arranged at the lower end of the mounting seat 1, the rotating seat 5 is rotatably arranged in the clamping assembly 4, one end of the rotating seat 5 is attached to one end of the heating assembly 3, and the interior of the rotating seat 5 can be communicated with the interior of the heating assembly 3; joint subassembly 4 is used for installing roating seat 5, roating seat 5 is used for installing the shower nozzle, the printing raw materials after 3 inside heating melts of heating element can enter into the shower nozzle through roating seat 5 in to print on print platform through the shower nozzle.
The driving assembly 7 is arranged on the clamping assembly 4, and the driving assembly 7 is in transmission connection with the rotating seat 5; the driving assembly 7 is used for driving the rotating base 5 to rotate, so that the communication position between the heating assembly 3 and the inside of the rotating base 5 is changed, and the use state of the printing nozzle is changed.
A limiting assembly 6 is arranged at one end of the rotating seat 5 communicated with the heating assembly 3, the limiting assembly 6 is installed on the rotating seat 5, and one end of the limiting assembly 6, far away from the rotating seat 5, can be in clamping fit with the heating assembly 3; spacing subassembly 6 is used for spacing the rotational position of roating seat 5, improves roating seat 5 and heating element 3 position cooperation precision.
Illustratively, the mounting seat 1 is mounted on a three-dimensional transmission mechanism of a 3D printer, a feeding device of the printer is communicated with a throat 2, the feeding device conveys printing raw materials into a heating component 3 through the throat 2, the printing raw materials enter a rotating seat 5 after being heated and melted by the heating component 3, and finally the printing raw materials are printed on a printing platform through a nozzle for forming, at the moment, the heating component 3 is communicated with a group of nozzles, and a limiting component 6 between the heating component 3 and the rotating seat 5 is in an extending state and plays a role in limiting and fixing the rotating seat 5; when the printing nozzle needs to be replaced for printing, the driving assembly 7 operates to drive the rotating seat 5 to rotate by a preset angle, and the limiting assembly 6 is in a compressed state and cannot limit the rotating seat 5; when the rotating base 5 rotates to a preset angle range, the heating assembly 3 is communicated with the other group of spray heads, the limiting assembly 6 is changed into an extending state, and the rotating base 5 is limited again.
Through the cooperation use of mount pad 1, choke 2, heating element 3, joint subassembly 4, roating seat 5, this shower nozzle auto-change over device wholeness is strong, and occupation space is little, and its structure equipartition is arranged in mount pad 1, uses safelyr.
Carry out rotary drive to roating seat 5 through using drive assembly 7 to the user state of the numerous shower nozzles of change installation on roating seat 5 need not artifical adjustment, and it is convenient and safe to use.
Through set up spacing subassembly 6 between roating seat 5 and heating element 3 for it is spacing to the roating seat 5 of predetermined position to rotate, makes this shower nozzle auto-change over device use safer, stable.
Two groups of mounting holes 103 are symmetrically and parallelly formed in the side wall of the mounting seat 1, as shown in fig. 3 and 4; a first through hole 102 is formed in the upper end of the mounting seat 1, and the first through hole 102 is communicated with the cavity 101; a plurality of groups of heat dissipation holes 104 are formed in the side wall of the cavity 101, and the plurality of groups of heat dissipation holes 104 are arranged in an annular array; the inner wall of the cavity 101 is provided with an internal thread 105 near the lower end of the mounting seat 1.
The mounting seat 1 is mounted on a three-dimensional transmission mechanism of the 3D printer through a mounting hole 103; the heating component 3 is positioned in the cavity 101 and among the plurality of groups of heat dissipation holes 104; the clamping assembly 4 is mounted on the mounting block 1 by means of an internal thread 105.
The bottom of cavity 101 is provided with first stopper 8, first stopper 8 sets up to the loop configuration, be provided with joint interface 801 on the first stopper 8.
One end of the heating component 3 can be abutted against the first limiting block 8, and the end of the heating component 3 can be clamped in the clamping interface 801.
Through set up annular stopper in mount pad 1 cavity 101 bottom to set up joint interface 801 on this stopper and be used for spacing heating element 3, make heating element 3 need not to calculate the position when the installation, alright direct joint to mount pad 1 in, it is convenient, labour saving and time saving to install.
The throat pipe 2 is arranged in the first through hole 102, as shown in fig. 5, two ends of the throat pipe 2 are respectively located at the upper end of the mounting seat 1 and inside the cavity 101, a group of fixing bolts 9 are respectively installed on two sides of the throat pipe 2, and the throat pipe 2 is fixed in the first through hole 102 through the fixing bolts 9 at the end part.
The heating assembly 3 comprises a heating device 10, a first fixing block 11 and a second fixing block 12, as shown in fig. 6; the heating device 10 is arranged in the cavity 101, and the end part of the heating device 10 can be attached to the first limiting block 8; the first fixing block 11 is arranged at the upper end of the heating device 10, the first fixing block 11 is arranged to be of an annular columnar structure, and the central axis of the first fixing block 11 is overlapped with the central axis of the feeding hole 1001 of the heating device 10; the end part of the throat pipe 2 can be clamped in the first fixing block 11, and the throat pipe 2 can be communicated with the feeding hole 1001; the second fixed block 12 is arranged at the upper end of the heating device 10 and connected with the side wall of the first fixed block 11, and the second fixed block 12 can be clamped and fixed in the clamping interface 801.
The lower end of the heating device 10 is provided with a plurality of sets of first limiting grooves 1003, as shown in fig. 7 for example; the plurality of groups of first limiting grooves 1003 are arranged in an annular array, discharge holes 1002 are further formed in the lower end of the heating device 10, and the discharge holes 1002 do not coincide with the central axis of the heating device 10.
The discharge hole 1002 can be communicated with the inside of the rotating base 5, and the end parts of the limiting assemblies 6 can be respectively clamped in the first limiting grooves 1003.
Illustratively, before the driving component 7 drives the rotating base 5 to rotate, the end part of the limiting component 6 is clamped in the first limiting groove 1003; when the driving assembly 7 drives the rotating base 5 to rotate, the limiting assembly 6 is disengaged from the first limiting groove 1003 under the influence of the rotating force and is in a compressed state until the rotating base 5 rotates to a preset position, and the end part of the limiting assembly 6 can be clamped in the first limiting groove 1003 again.
The heating assembly 3 further includes a third fixing block 13, as shown in fig. 8, the third fixing block 13 is configured as an annular structure, the side wall of the third fixing block 13 is provided with an external thread 1302, the external thread 1302 can be matched with the internal thread 105, the third fixing block 13 can be installed in the cavity 101, and one end of the third fixing block 13 can be abutted against the heating device 10.
A plurality of groups of second limiting grooves 1301 are formed in one surface, far away from the heating device 10, of the third fixing block 13, and the plurality of groups of second limiting grooves 1301 are arranged in an annular array.
Preferably, a turntable bearing can be arranged at one end of the third fixing block 13 close to the heating device 10, and the central axis of the turntable bearing coincides with the central axis of the third fixing block 13.
For example, a user may mount and dismount the third fixing block 13 through several sets of second limiting grooves 1301.
Through installing third fixed block 13 in cavity 101 for fixed heating device 10 for third fixed block 13 is whole to be located shower nozzle auto-change over device, can not take place the mistake and bump the circumstances such as cause heating device not hard up, and fixed knot constructs simply, and the installation is more swift with the dismantlement.
Through set up the carousel bearing at the third fixed block 13 near one side of heating device 10 with one heart for third fixed block 13 can directly be installed best preset position when the installation, plays the best fixed effect to heating device 10, and the result of use is better.
The clamping assembly 4 comprises a fourth fixing block 15 and a fifth fixing block 16, as shown in fig. 9; the fourth fixed block 15 is arranged to be of an annular columnar structure, and the fifth fixed block 16 is sleeved on the outer wall of one end of the fourth fixed block 15; and a rotating bearing 17 is further arranged on the inner wall of the fourth fixed block 15.
One end of the fourth fixing block 15 can be inserted into the end of the cavity 101, the fifth fixing block 16 can be attached to the lower end of the mounting base 1, and the fourth fixing block and the fifth fixing block can be fixedly connected through a fixing bolt.
A third mounting groove 1501 is formed in one end of the fourth fixing block 15, which is far away from the cavity 101.
The side wall of the rotating seat 5 is connected with the inner wall of the rotating bearing 17, the upper end of the rotating seat 5 can be movably attached to the end part of the heating device 10, and the attachment part of the rotating seat 5 and the end part of the heating device 10 is sealed, as shown in fig. 10, the upper end of the rotating seat 5 is provided with a plurality of groups of second through holes 501 and a plurality of groups of second mounting grooves 503, and the plurality of groups of second through holes 501 and the plurality of groups of second mounting grooves 503 are arranged in an annular array; the lower end of the rotating seat 5 is provided with a plurality of groups of first mounting grooves 502, and the central axis of each group of first mounting grooves 502 coincides with the central axis of a group of second through holes 501.
Each group of the second through holes 501 can be respectively communicated with a discharge hole 1002; and a transmission belt groove is arranged at the lower end of the side wall of the rotating seat 5.
The driving assembly 7 comprises a motor 18 and a driving wheel 19, the motor 18 is installed in the third installation groove 1501, the driving wheel 19 is sleeved on an output shaft of the motor 18, the driving wheel 19 is in transmission connection with the rotary base 5 through a driving belt 20, and the driving belt 20 is respectively sleeved in the driving wheel 19 and the driving belt groove.
Preferably, the drive belt 20 is provided as a drive chain.
By providing the drive belt 20 as a drive chain, the drive efficiency of the drive assembly 7 is made higher.
The limiting assembly 6 comprises a second limiting block 21 and a spring 22, the second limiting block 21 is of a spherical structure, the second limiting block 21 is movably clamped in the second mounting groove 503, and the second limiting block 21 is elastically connected with the bottom of the second mounting groove 503 through the spring 22; the second limiting block 21 can be clamped in the first limiting groove 1003.
Illustratively, in a conventional state, the second limiting block 21 is clamped in the first limiting groove 1003, and the nozzle is installed in the first installation groove 502; when the spray head is replaced, the motor 18 operates to drive the rotating seat 5 to rotate, at the moment, the second limiting block 21 is gradually moved into the second mounting groove 503 under the influence of the rotation until the second limiting block is completely clamped in the second mounting groove 503, and each group of second through holes 501 are not communicated with the discharge hole 1002; when the rotating base 5 rotates to a preset position, the group of second through holes 501 is communicated with the discharging hole 1002, and the second limiting block 21 is pushed by the spring 22 to be clamped in the first limiting groove 1003 again.
Through the second through-hole 501 and the first mounting groove 502 that the city annular array set up mutual intercommunication on roating seat 5, the melting of export is printed the raw materials and can be followed second through-hole 501 and first mounting groove 502 straight entering shower nozzle in the discharge opening 1002 of heating device 10, and melting raw materials flow is short, and output speed is fast, and follow-up clearance is more convenient.
Install on roating seat 5 through with a plurality of groups shower nozzle, and roating seat 5 rotates to be installed in joint subassembly 4, and the user can select single quick replacement of shower nozzle when changing or maintaining the shower nozzle, or wholly take out so that observe and overhaul roating seat 5 and shower nozzle with joint subassembly 4, use more in a flexible way, it is more convenient to change.
Through rotating roating seat 5 to the shower nozzle is used in the change, and the shower nozzle position after the change is the same with original, makes the printer need not to change the calculation coordinate when printing, and it is more convenient to use.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a 3D print head auto-change over device which characterized in that: comprises a mounting seat (1), a throat pipe (2), a heating component (3), a clamping component (4), a rotating seat (5), a limiting component (6) and a driving component (7);
a cavity (101) is arranged in the mounting seat (1), the lower end of the mounting seat (1) is of an open structure, and one end of the throat pipe (2) penetrates through the upper end of the mounting seat (1) and is located in the cavity (101);
the heating assembly (3) is fixedly arranged in the cavity (101), the upper end and the lower end of the heating assembly (3) are respectively provided with a feeding hole (1001) and a discharging hole (1002), and the feeding hole (1001) is communicated with one end of the throat pipe (2) in the cavity (101);
the clamping component (4) is fixedly arranged at the lower end of the mounting seat (1);
the rotary seat (5) is rotatably installed in the clamping assembly (4) through a rotary bearing (17), the upper end of the rotary seat (5) can be movably attached to the end part of the heating assembly (3), and the attachment part of the rotary seat and the heating assembly is sealed;
the upper end of the rotating seat (5) is provided with a plurality of groups of second through holes (501) and a plurality of groups of second mounting grooves (503), and the plurality of groups of second through holes (501) and the plurality of groups of second mounting grooves (503) are arranged in an annular array; the lower end of the rotating seat (5) is provided with a plurality of groups of first mounting grooves (502), and the central axis of each group of first mounting grooves (502) is superposed with the central axis of one group of second through holes (501) respectively; each group of the second through holes (501) can be respectively communicated with a discharge hole (1002);
the driving assembly (7) is arranged on the clamping assembly (4), and the driving assembly (7) is in transmission connection with the rotating seat (5);
each group of the limiting component (6) is arranged in a group of second mounting grooves (503) respectively, and one end, far away from the second mounting grooves (503), of the limiting component (6) can be clamped at the end part of the heating component (3).
2. The 3D printer nozzle switching device according to claim 1, wherein: two groups of mounting holes (103) are symmetrically and parallelly formed in the side wall of the mounting seat (1), a first through hole (102) is formed in the upper end of the mounting seat (1), and the first through hole (102) is communicated with the cavity (101);
a plurality of groups of heat dissipation holes (104) are formed in the side wall of the cavity (101), and the plurality of groups of heat dissipation holes (104) are arranged in an annular array; and an internal thread (105) is arranged on the inner wall of the cavity (101) close to the lower end of the mounting seat (1).
3. The 3D printer nozzle switching device according to claim 2, wherein: the bottom of cavity (101) is provided with first stopper (8), first stopper (8) set up to annular structure, be provided with joint interface (801) on first stopper (8).
4. The 3D printer nozzle switching device according to claim 2, wherein: the throat pipe (2) is arranged in the first through hole (102), two ends of the throat pipe (2) are respectively located at the upper end of the mounting seat (1) and inside the cavity (101), a group of fixing bolts (9) are respectively mounted on two sides of the throat pipe (2), and the throat pipe (2) is fixed in the first through hole (102) through the fixing bolts (9) at the end parts.
5. The 3D printer nozzle switching device according to claim 3, wherein: the heating assembly (3) comprises a heating device (10), a first fixing block (11) and a second fixing block (12);
the heating device (10) is arranged in the cavity (101), and the end part of the heating device (10) can be attached to the first limiting block (8); the first fixing block (11) is arranged at the upper end of the heating device (10), the first fixing block (11) is arranged to be of an annular columnar structure, and the central axis of the first fixing block (11) is overlapped with the central axis of the feeding hole (1001) of the heating device (10); the end part of the throat pipe (2) can be clamped in the first fixing block (11), and the throat pipe (2) can be communicated with the feeding hole (1001);
the second fixing block (12) is arranged at the upper end of the heating device (10) and is connected with the side wall of the first fixing block (11), and the second fixing block (12) can be clamped and fixed in the clamping interface (801).
6. The 3D printer nozzle switching device according to claim 5, wherein: a plurality of groups of first limiting grooves (1003) are formed in the lower end of the heating device (10), and the plurality of groups of first limiting grooves (1003) are arranged in an annular array;
the discharge hole (1002) is not overlapped with the central axis of the heating device (10).
7. The 3D printer nozzle switching device of claim 6, wherein: the heating assembly (3) further comprises a third fixing block (13), the third fixing block (13) is arranged to be of an annular structure, an external thread (1302) is arranged on the side wall of the third fixing block (13), the external thread (1302) can be matched with the internal thread (105), the third fixing block (13) can be installed in the cavity (101), and one end of the third fixing block (13) can be abutted against the heating device (10);
one side, far away from the heating device (10), of the third fixing block (13) is provided with a plurality of groups of second limiting grooves (1301), and the plurality of groups of second limiting grooves (1301) are arranged in an annular array.
8. The 3D printer nozzle switching device according to claim 2, wherein: the clamping assembly (4) comprises a fourth fixing block (15) and a fifth fixing block (16);
the fourth fixed block (15) is arranged to be of an annular columnar structure, and the fifth fixed block (16) is sleeved on the outer wall of one end of the fourth fixed block (15); the inner wall of the fourth fixed block (15) is also provided with a rotating bearing (17);
the side wall of the rotating seat (5) is connected with the inner wall of the rotating bearing (17);
one end of the fourth fixing block (15) can be inserted into the end part of the cavity (101), the fifth fixing block (16) can be attached to the lower end of the mounting seat (1), and the fourth fixing block and the fifth fixing block can be fixedly connected through a fixing bolt;
and a third mounting groove (1501) is formed in one end, far away from the cavity (101), of the fourth fixing block (15).
9. The 3D printer nozzle switching device of claim 8, wherein: the driving component (7) comprises a motor (18) and a transmission wheel (19);
the motor (18) is arranged in the third mounting groove (1501), the driving wheel (19) is sleeved on an output shaft of the motor (18), and the driving wheel (19) is in transmission connection with the rotating seat (5) through a transmission belt (20).
10. The 3D printer nozzle switching device according to claim 1, wherein: the limiting assembly (6) comprises a second limiting block (21) and a spring (22);
the second limiting block (21) is of a spherical structure, the second limiting block (21) is movably clamped in the second mounting groove (503), and the second limiting block (21) is elastically connected with the bottom of the second mounting groove (503) through a spring (22);
the second limiting block (21) can be clamped in the first limiting groove (1003).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011529012.5A CN112810144A (en) | 2020-12-22 | 2020-12-22 | 3D print head auto-change over device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011529012.5A CN112810144A (en) | 2020-12-22 | 2020-12-22 | 3D print head auto-change over device |
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| CN112810144A true CN112810144A (en) | 2021-05-18 |
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| CN202011529012.5A Pending CN112810144A (en) | 2020-12-22 | 2020-12-22 | 3D print head auto-change over device |
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