CN110682533A - FDM that prints towards complicated work piece 3D spouts a mechanism - Google Patents
FDM that prints towards complicated work piece 3D spouts a mechanism Download PDFInfo
- Publication number
- CN110682533A CN110682533A CN201911084728.6A CN201911084728A CN110682533A CN 110682533 A CN110682533 A CN 110682533A CN 201911084728 A CN201911084728 A CN 201911084728A CN 110682533 A CN110682533 A CN 110682533A
- Authority
- CN
- China
- Prior art keywords
- printing
- fdm
- throat
- complex
- spinning mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000010146 3D printing Methods 0.000 claims abstract description 29
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 55
- 238000003825 pressing Methods 0.000 claims description 31
- 238000007906 compression Methods 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007639 printing Methods 0.000 abstract description 28
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 239000010963 304 stainless steel Substances 0.000 description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—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
-
- 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
- B29C64/295—Heating elements
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses an FDM spinning mechanism for 3D printing of complex workpieces, which comprises a filament feeding system arranged above the filament feeding system and a filament discharging system fixed below the filament feeding system; in the wire feeding system, an L-shaped connecting piece connected with a throat is optimized, a fan speed regulator is installed on the side of a connecting frame, and a lengthened throat is designed in the wire discharging system to print complex workpieces. The spinneret mechanism can effectively solve the problem that a complex workpiece is printed by an FDM three-dimensional printer, and further solve the problem that a nozzle is blocked due to the fact that wires existing in the existing three-dimensional printing are easy to expand when heated. The invention improves the printing efficiency and the printing product precision, expands the application range of FDM three-dimensional printing and has higher economic benefit.
Description
Technical Field
The invention relates to an FDM (fused deposition modeling) spinning mechanism for 3D printing of complex workpieces, and belongs to the technical field of equipment assemblies in the field of 3D printing.
Background
Fused Deposition Modeling (FDM) 3D printing technology is one of the conventional technologies in the field of 3D printing, and is popular among many users because the fuse wire layer-by-layer stacking molding manufacturing method is easy to implement, and can be used for printing various physical models and even practical workpieces. The spinning mechanism is a core component of the printing equipment, and the traditional spinning mechanism combining a short throat pipe and a large heating block is generally adopted in the market at present. Because the spinning mechanism is easy to interfere with a workpiece, the spinning mechanism is only suitable for a 2.5-axis printing process and cannot be suitable for multi-axis unsupported 3D printing of complex workpieces. And the unsupported 3D printing of complex workpieces is one of the important development trends of the current 3D printing technology. Therefore, a spinning structure with less interference and stable performance is designed for the multi-axis unsupported 3D printing technology of complex workpieces, and the method plays an important role in the development of the FDM three-dimensional printing technology.
Disclosure of Invention
In order to solve the problems of the prior art, the invention aims to provide the FDM spinning mechanism for the 3D printing of the complex workpiece, effectively solves the problems of printing the complex workpiece and preventing yarn blockage in the multi-axis printing, provides an effective solution for the problems in the multi-axis 3D printing, and has the characteristics of low cost, high processing efficiency, strong operability and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
an FDM spinning mechanism for 3D printing of complex workpieces comprises a yarn feeding system and a yarn discharging system; the wire feeding system comprises a connecting frame, a compression screw, a compression block, a compression spring, a fastening bolt, an adjusting screw, a feeding gear, a compression wheel and a stepping motor; the wire outlet system comprises a throat pipe, a nozzle and a heating block; the wire feeding system further comprises a cooling fan for reducing the temperature of the throat pipe.
Furthermore, the device also comprises an L-shaped connecting piece, wherein the L-shaped connecting piece consists of a vertical plate and a transverse plate; a through hole is formed in the vertical plate, the outer side surface of the vertical plate is fixed to one side of the connecting frame, the stepping motor is fixed to the other side of the connecting frame, an output shaft of the stepping motor penetrates through the through hole, and a feeding gear is fixed to one end, exposed out of the through hole, of the output shaft; the geometric center of the pressing block is hinged with the inner side surface of the vertical plate, a pressing screw penetrates through the pressing block longitudinally, the fastening stud is fixed on the upper surface of the transverse plate, the adjusting screw penetrates through the transverse plate and the fastening stud longitudinally and sequentially, and a pressing spring is connected between the adjusting screw and the pressing screw; a pressing wheel is arranged below the pressing block; the transverse plate is provided with a longitudinal through hole for passing through the PLA silk material.
The stepping motor drives the feeding gear to drive, and the feeding gear, the pressing wheel, the pressing block and the pressing spring feed the wire into the wire outlet system below under the combined action so as to realize wire feeding. The compression spring is used for manually changing the wire on one hand, and can prevent the wire from jumping in the feeding process on the other hand. The compression spring is sleeved on a compression screw on the compression block and a fastening stud fixed on an adjusting screw on the L-shaped connecting piece, the effective distance between the compression block and a transverse plate of the L-shaped connecting piece can be changed by screwing/loosening the compression screw, and the tightness of the compression spring can be adjusted by screwing/loosening the adjusting screw. The geometric center of the pressing block is fixed on a vertical plate of the L-shaped connecting piece, the pressing block can be manually pressed/loosened, and the pressing wheel is fixed on the pressing block to push the wire material onto the feeding gear so as to facilitate wire feeding.
Furthermore, a front air guide cover and a rear air guide cover are respectively arranged at the front and the rear of the cooling fan, the front air guide cover is fixed on the transverse plate, the cooling fan is fixed on the front air guide cover, and the rear air guide cover is fixed on the front air guide cover.
Furthermore, the fan speed regulator is fixed on the connecting frame and is electrically connected with the radiating fan.
The fan speed regulator is connected in one side of link, and it plays the effect of lifting at the heat dissipation in-process. The complex workpiece is printed with extremely high process requirements, so that parameters such as printing speed are different in different time periods, and wire blockage can occur in any link, so that the switching regulator can regulate the temperature of the fan in each time period, and meanwhile, technicians can manually regulate the temperature according to the printing condition to ensure that the temperature of the nozzle is always in a proper range.
Furthermore, a straight-through pipeline is arranged in the longitudinal through hole, the upper end of the straight-through pipeline extends to the lower parts of the feeding gear and the pressing wheel, and the lower end of the straight-through pipeline is connected with the throat pipe.
The wire material can enter the newly connected through pipeline port downwards under the action of the feeding gear, and the wire material is plastic and is wound together when purchased, so that the wire material is often blocked in the wire feeding system when manually replaced, the through pipeline ensures that the wire material smoothly enters the L-shaped connecting piece and the wire discharging system below the L-shaped connecting piece after being extruded by the feeding gear, and the lower part of the through pipeline is in threaded connection with the throat pipe.
Further, the length of the straight-through pipeline below the longitudinal through hole is 1/5 of the length of the throat pipe.
Because the throat is the lengthened throat, the strength is ensured due to the manufacturing of 304 stainless steel, but the rigidity is not enough due to overlong, the straight-through pipeline always extends downwards for 1/5 throat lengths, and the rigidity of the lengthened throat is improved without reducing the printing range.
Furthermore, the upper part of the throat pipe is connected with the straight-through pipeline, and the lower part of the throat pipe is connected with the heating block. The length of the throat pipe is suitable for printing of complex workpieces, such as cladding and the like. On the basis of the existing base material, the printing is easy to generate the bad phenomena of interference and the like, especially as a complex workpiece, the printing of a single base body takes a long time, and the working efficiency is greatly reduced if accidents occur due to later-stage cladding. Therefore, the length of the lengthened choke pipe is 3-5 times of the length of the choke pipe on the market, the lengthened choke pipe is processed by 304 stainless steel, and the upper part of the joint of the lengthened choke pipe and the heating block is provided with four heat blocking grooves, so that the upward transfer of heat of the heating block can be blocked rapidly, and the blockage of a spray head is prevented. Two symmetrical rectangular planes are milled above the heat retardation groove by using a milling cutter, and the throat pipe is conveniently fixed on the heating block and the L-shaped connecting piece by using a wrench, so that the connection of the throat pipe is more stable. A Teflon tube is arranged in the elongated throat tube in a penetrating mode, the lower portion of the Teflon tube is communicated with the nozzle, printing wires are smoothly guided to the nozzle, and the printing wires are melted in the nozzle.
Furthermore, the heating block is externally provided with a rectangular solid, the volume of the heating block is half of that of the existing heating block, the interference can be effectively reduced, the upper surface of the heating block is provided with two hollow round tables, and one of the round tables is internally provided with an internal thread matched with the external thread of the throat pipe and used for being in threaded connection with the throat pipe; the heating block under the other circular truncated cone is provided with a heating hole on the surface, the heating rod is inserted into the heating block from top to bottom through the circular truncated cone and the heating hole, the circular truncated cone can ensure that the heat goes upward and slows down, the choke is prevented, and the overall thickness of the heating block can be reduced. The heating block is made of an aluminum alloy material, and the temperature sensor and the heating block are fixed through an inner hexagon screw; the heating rod is locked by a tip fastening screw, the temperature sensor and the heating rod are respectively connected to the temperature controller and the relay through leads, and the temperature of the heating block is heated to a certain temperature by setting given temperature.
The invention achieves the following beneficial effects: the spinning system is comprehensively optimized in structure from top to bottom, effectively solves the problems of printing complex workpieces and preventing yarn blockage in multi-axis printing, improves the printing efficiency, improves the manufacturing precision and the processable range of three-dimensional printing, and has higher economic benefit.
Drawings
FIG. 1 is an isometric view of a spinning system; FIG. 2 is a front view of a spinning system; FIG. 3 is a top view of the spinning system; FIG. 4 is a front view of the wire feed system; FIG. 5 is a side view of a wire feed system; FIG. 6 is an isometric view of an L-shaped connector; FIG. 7 is a front view of the L-shaped connector; FIG. 8 is a cross-sectional view of an L-shaped connector; FIG. 9 is a front view of the wire feed system; FIG. 10 is a cross-sectional view of a wire feed system; FIG. 11 is a cross-sectional view of a heated portion; FIG. 12 is an isometric view of a heat block;
notation and meaning in the figures:
1-connecting frame, 2-compression screw, 3-compression block, 4-compression spring, 5-fastening stud, 6-radiator fan, 7-fan speed regulator, 8-feeding gear, 9-compression wheel, 10-stepping motor, 11-L type connecting piece, 12-adjusting screw, 13-rear wind scooper, 14-front wind scooper, 15-PLA wire, 16-Teflon conduit, 17-elongated throat, 18-nozzle, 19-heating block, 20-tip fastening screw, 21-heating rod, 22-temperature sensor, 23-inner hexagon screw, 24-first hollow circular truncated cone, 25-second hollow circular truncated cone, 26-heat retarding groove and 27-rectangular plane.
Detailed Description
The technical solution of the present invention will now be fully described with reference to fig. 1-12. The following description is merely exemplary of some, but not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art without any inventive step are within the scope of the present invention.
As shown in fig. 1-12, the invention discloses a FDM spinning mechanism design for 3D printing of complex workpieces. The mechanism comprises a wire feeding system and a wire discharging system, wherein the wire feeding system is connected with a control system, the lower end of the wire feeding system is connected with the wire discharging system, a transmission shaft of a stepping motor drives a feeding gear to rotate in the printing process, a PLA wire material is forced to move downwards under the combined action of a pressing wheel and the feeding gear, and the continuous supply of printing raw materials is realized in the process.
As shown in fig. 4-8, the wire feeding system comprises a stepping motor 10, a pressing block 3, a pressing wheel 9, a pressing screw 2, a pressing spring 4, an L-shaped connector 11, an adjusting screw 12, a fan governor 7, front and rear wind scoopers 13-14 and a cooling fan 6 which are connected to the connecting frame 1 in sequence; the output end of the stepping motor 10 is fixed with the feeding gear 8 through a set screw to drive the feeding gear to rotate, the other end of the feeding gear is sequentially connected with the pressing wheel 9 and the pressing block 3, and wire feeding action is realized under the pressure of the feeding gear 8, the pressing wheel 9 and the pressing block 3;
meanwhile, the compression spring 4 is respectively wound on the compression screw 2 of the compression block 3 and the fastening stud 5 of the L-shaped connecting piece, the fastening stud 5 of the L-shaped connecting piece is locked by the adjusting screw 12, the pre-tightening force can be adjusted by screwing/loosening the compression screw 2 of the compression block 3, and the moving length of the compression block can be adjusted by screwing/loosening the adjusting screw 12 so as to control the gap between the compression wheel 9 and the feeding gear 8.
For printing complex workpieces, the problem of heat dissipation in the printing process is particularly important. In order to maximize the heat dissipation efficiency, the invention adds a fan speed regulator 7 in the wire feeding system, which is fixed at one side of the connecting frame 1 and outputs signals in real time through a control system to control the output voltage, and the wind speed is changed in real time at any time in the printing process. Meanwhile, the wind scooper of the fan is also structurally designed, so that the heat at the throat above the heating block can be rapidly reduced under the structure, and wire blockage in the printing process is avoided.
One side of the L-shaped connecting piece is fixed with the adjusting stud, one side of the L-shaped connecting piece is connected with the lengthened throat pipe, and the heat radiation fan and the wind guide cover are also fixed on the L-shaped connecting piece. PLA silk material can enter into the straight-through pipeline mouth of new connection downwards by the effect of feeding gear, enters into the system of going out smoothly through straight-through pipeline mouth.
The lower end of the wire feeding system is connected with the wire discharging system.
With reference to fig. 9 to 12, the filament discharging system specifically includes: the nozzle 18 is connected to the heating block 19, heat is conducted to the nozzle through the heating block to complete melting wires of the PLA wire material 15, the heating rod 21 and the temperature sensor 22 are fixed on the heating block 19 through the hexagon socket head cap screws 23, and the heating rod and the temperature sensor are connected to the relay and the temperature controller through wires respectively to achieve heating and achieve constant temperature control of the heating block. The four heat retardation grooves of the elongated throat 17 at the nozzle 18 can effectively block the heat from being uploaded. Two symmetrical rectangular planes are milled above the heat retardation groove by using a milling cutter, so that the throat pipe can be conveniently fixed on the heating block and the connecting piece by using a wrench. Add elongated choke 17 inside have the teflon pipe 16 can stop the heat to the PLA silk material of transferring to that adds elongated choke inside, prevent effectively that the silk material from blocking up the silk because of the thermal expansion in adding elongated choke inside, temperature sensor 22 detects the temperature, and heating rod 21 accomplishes the constancy of temperature at printing in-process nozzle position to heating block 19 heating, and the combined action of spare part has realized the completion of printing work and has gone on.
The embodiment provides two heat dissipation methods and a heating method, one is that the elongated throat is made of 304 stainless steel, and four heat blocking grooves with equal distance and equal width are formed at the joint of the elongated throat and the heating block, so that heat transfer can be blocked fundamentally, and the blockage of the spray head is further prevented.
The other type is that a speed-adjustable radiating fan is added into the wire feeding system, and the wind scooper has the best radiating effect above the heating block through system analysis, so that the problem that the temperature of the heating block rises too slowly due to too fast radiating is avoided. The fan speed regulator is connected with the control system, the wind speed is regulated by the control board card in real time, and the manufacturing precision of a workpiece can be ensured in the printing process.
The heating mode is that the designed heating block is made of aluminum alloy, the heating rod is inserted from the right side instead of the upper side, the mass and the volume of the heating block are reduced, the interference can be effectively reduced in work, and the work efficiency is improved. Meanwhile, the heat insulation glue is pasted outside the heating block, so that the heat loss is reduced, and the service life of the heating block is prolonged.
Two kinds of heat dissipation modes and heating methods combine to use, have solved to present can not print complicated work piece or print the precision and hang down the scheduling problem excessively towards among the multiaxis three-dimensional printing to thereby further solved the heat dissipation inequality of choke and shower nozzle that exists and lead to the problem of stifled silk easily. The invention improves the printing efficiency, improves the manufacturing precision and the processing range of three-dimensional printing and has higher economic benefit.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An FDM spinning mechanism for 3D printing of complex workpieces comprises a yarn feeding system and a yarn discharging system; the wire feeding system comprises a connecting frame, a compression screw, a compression block, a compression spring, a fastening bolt, an adjusting screw, a feeding gear, a compression wheel and a stepping motor; the wire outlet system comprises a throat pipe, a nozzle and a heating block; the filament feeding system is characterized by further comprising a cooling fan and a fan speed regulator, and the cooling fan and the fan speed regulator are used for reducing the temperature of the throat pipe.
2. The FDM spinning mechanism for 3D printing of complex workpieces as claimed in claim 1 further comprising L-shaped connectors, wherein the L-shaped connectors are composed of vertical plates and horizontal plates; a through hole is formed in the vertical plate, the vertical plate is fixed to one side of the connecting frame, the stepping motor is fixed to the other side of the connecting frame, the output shaft of the stepping motor penetrates through the through hole, and a feeding gear is fixed to one end, exposed out of the through hole, of the output shaft; the geometric center of the pressing block is hinged with the inner side surface of the vertical plate, a pressing screw penetrates through the pressing block longitudinally, the fastening stud is fixed on the upper surface of the transverse plate, the adjusting screw penetrates through the transverse plate and the fastening stud longitudinally and sequentially, and a pressing spring is connected between the adjusting screw and the pressing screw; a pressing wheel is arranged below the pressing block; the transverse plate is provided with a longitudinal through hole for passing through the PLA silk material.
3. An FDM spinning mechanism for 3D printing of complex workpiece as claimed in claim 2 wherein, front and back of the heat dissipation fan are set with front wind guiding cover and back wind guiding cover respectively, the front wind guiding cover is fixed on the cross plate of the L-shaped connecting piece, the heat dissipation fan is fixed on the front wind guiding cover, the back wind guiding cover is fixed on the front wind guiding cover.
4. An FDM spinning mechanism for 3D printing of complex workpiece as claimed in claim 2 wherein the longitudinal through hole is installed with a straight through pipe, the upper end of the straight through pipe extends to below the feeding gear and the pinch roller, the lower end is connected with the throat.
5. An FDM spinning mechanism for 3D printing of complex workpiece as claimed in claim 4 wherein the length of the straight through pipe under the longitudinal through hole is 1/5 of throat length.
6. An FDM spinneret mechanism facing to 3D printing of a complex workpiece according to claim 1 wherein the throat is elongated and has a length of 120-180 mm.
7. An FDM spinning mechanism for 3D printing of complex work piece according to claim 1 wherein the throat has heat blocking slots above the junction with the heating block.
8. The FDM spinning mechanism for 3D printing of complex workpieces as claimed in claim 1, wherein the heating block has heating holes on its top surface for inserting heating rods into the heating block from top to bottom.
9. The FDM spinning mechanism for 3D printing of complex workpieces according to claim 8, wherein a first hollow circular truncated cone and a second hollow circular truncated cone are arranged on the upper surface of the heating block, the first hollow circular truncated cone is located above the heating hole, and an internal thread matched with an external thread of the throat pipe is arranged in the second hollow circular truncated cone.
10. An FDM spinning mechanism for 3D printing of complex workpiece as claimed in claim 1 wherein the heating block is 15-20 mm long and wide and 5mm thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911084728.6A CN110682533A (en) | 2019-11-08 | 2019-11-08 | FDM that prints towards complicated work piece 3D spouts a mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911084728.6A CN110682533A (en) | 2019-11-08 | 2019-11-08 | FDM that prints towards complicated work piece 3D spouts a mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110682533A true CN110682533A (en) | 2020-01-14 |
Family
ID=69115757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911084728.6A Pending CN110682533A (en) | 2019-11-08 | 2019-11-08 | FDM that prints towards complicated work piece 3D spouts a mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110682533A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481822A (en) * | 2020-10-30 | 2021-03-12 | 张家港骏马无纺布有限公司 | Non-woven fabric melt-blown forming method |
| CN113001982A (en) * | 2021-03-17 | 2021-06-22 | 深圳市创想三维科技有限公司 | Extrusion device and 3D printer |
| CN113492525A (en) * | 2020-04-07 | 2021-10-12 | 瑞典邦德泰科有限公司 | Actuator mechanism with action lever for cycling between preset distances |
-
2019
- 2019-11-08 CN CN201911084728.6A patent/CN110682533A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492525A (en) * | 2020-04-07 | 2021-10-12 | 瑞典邦德泰科有限公司 | Actuator mechanism with action lever for cycling between preset distances |
| CN113492525B (en) * | 2020-04-07 | 2023-10-31 | 瑞典邦德泰科有限公司 | Actuator mechanism with an actuating lever for cycling between preset distances |
| CN112481822A (en) * | 2020-10-30 | 2021-03-12 | 张家港骏马无纺布有限公司 | Non-woven fabric melt-blown forming method |
| CN113001982A (en) * | 2021-03-17 | 2021-06-22 | 深圳市创想三维科技有限公司 | Extrusion device and 3D printer |
| CN113001982B (en) * | 2021-03-17 | 2022-12-16 | 深圳市创想三维科技股份有限公司 | Extrusion device and 3D printer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110682533A (en) | FDM that prints towards complicated work piece 3D spouts a mechanism | |
| WO2015172540A1 (en) | Extrusion type metal flow 3d printer | |
| CN210061904U (en) | Temperature control type cable extrusion device | |
| CN204687359U (en) | A kind of three-dimensional printer | |
| CN104760282A (en) | Three-dimensional printer | |
| CN207388243U (en) | Copper bar coating assembly line | |
| CN112356422A (en) | Extrusion system and method for cable insulation layer | |
| CN111739695A (en) | Cable core cladding forming device for cable processing | |
| CN110978511B (en) | Line footpath controlling means of 3D printing consumables | |
| CN211763511U (en) | FDM that prints towards complicated work piece 3D spouts a mechanism | |
| CN213618373U (en) | Anti-disturbance 3D printing nozzle | |
| CN107599341A (en) | Copper bar coating assembly line | |
| CN110509544A (en) | One kind four enters two and goes out formula composite material 3D printing head | |
| CN112123772A (en) | 3D printer is with preventing blockking up with hot type stub bar | |
| CN110815811A (en) | Novel Dragon Hotend printing head for 3D printer | |
| CN215151677U (en) | Teflon carbon fiber machine head | |
| CN213321736U (en) | Multi-stage cooling type multi-channel printing nozzle | |
| CN219486577U (en) | Shower nozzle device and powder 3D printer | |
| CN113664181A (en) | Full liquid state extrusion casting conveying pipe | |
| CN210190596U (en) | 3D print head subassembly is extruded to many business turn over list output large capacity | |
| CN209718621U (en) | A kind of wire feeder for 3D printing feeding system | |
| CN206186362U (en) | 3D prints shower nozzle suitable for parallel arm | |
| CN113927867A (en) | High-precision co-extrusion machine head with fine-adjustment skin bubble skin injection strip | |
| CN112743827A (en) | Diameter adjusting device for 3D printing wire | |
| CN219274480U (en) | Electric heating atomized aluminum powder nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |