CN220146699U - Plasticizing extrusion device of desktop grade granule 3D printer - Google Patents
Plasticizing extrusion device of desktop grade granule 3D printer Download PDFInfo
- Publication number
- CN220146699U CN220146699U CN202320072402.7U CN202320072402U CN220146699U CN 220146699 U CN220146699 U CN 220146699U CN 202320072402 U CN202320072402 U CN 202320072402U CN 220146699 U CN220146699 U CN 220146699U
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- fixed
- heating cylinder
- printer
- motor
- plasticizing extrusion
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- 238000001125 extrusion Methods 0.000 title claims abstract description 28
- 239000008187 granular material Substances 0.000 title claims description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 40
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 abstract description 25
- 238000007639 printing Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a plasticizing extrusion device of a variety of desktop-level particle 3D printers, which comprises a bracket, wherein one side of the bracket is fixedly provided with a motor fixing plate and a material box fixing plate, a motor is fixedly arranged on the motor fixing plate, a material storage box is fixedly arranged between the motor fixing plate and the material box fixing plate, a heating cylinder is fixedly arranged at the bottom of the material box fixing plate, a nozzle is arranged at the bottom of the heating cylinder, an output shaft of the motor downwards penetrates through the motor fixing plate and is connected with a screw rod, the middle lower section of the screw rod penetrates through the material box fixing plate and stretches into the heating cylinder, a feed hopper is fixedly arranged above the side of the material storage box, and the feed hopper is communicated with the material storage box.
Description
Technical Field
The utility model relates to the field of small 3D printing equipment, in particular to a plasticizing extrusion device of a desktop grade particle 3D printer.
Background
Particle 3D printers belong to the emerging technical field at home and abroad, and industry development is still in the experimental test and technical exploration stages. The plasticizing component of the large-sized particle 3D printer is directly based on the technical development of an extruder, and the extruding screw and the charging barrel of the plasticizing system are parts with the diameter specification D30 or more, through the equipment, particles are fed into the plasticizing system from one end, the screw rotates, the fluid extrusion is realized at the other end through the cooperation of a three-section area of the screw and a heating system, and the die head structure is matched, so that the processing of materials such as pipes, plates, sheets, wires and the like is realized.
The small 3D printer lacks practical application experience, and only the extruder is simulated and reduced according to the 3D printer, so that the following problems exist: an elongated screw rod with the diameter below 20mm (the length of a thread groove is more than 25 times of the diameter) is difficult to process and realize, and is extremely easy to bend, break and discard in machining; the screw groove depth of the screw rod with small specification is smaller, raw material particles are more difficult to enter the screw groove space, extrusion flow break occurs, and stable plasticization and extrusion are difficult to realize. Therefore, the conventional desktop-level 3D printer generally uses plastic linear consumables as raw materials for processing, and the printing capability and the printing speed are severely limited, which is a problem in the prior art.
Disclosure of Invention
In order to make up for the defects of the prior art, the utility model provides a plasticizing extrusion device of a desktop grade particle 3D printer, which ensures that a plasticizing system of the desktop grade 3D printer meets the smooth feeding, melting and extrusion of plastic and modified particles thereof under the condition of a minimum space structure, and ensures that the desktop grade 3D printer realizes the function of 3D printing of the particles so as to improve the problems in the prior art.
The utility model is realized by the following technical scheme:
the utility model provides a plasticizing extrusion device of desktop level granule 3D printer, includes the support, one side of support is fixed with motor fixed plate and magazine fixed plate, be fixed with the motor on the motor fixed plate, be fixed with the storage box between motor fixed plate and the magazine fixed plate, the bottom of magazine fixed plate is fixed with the heating cylinder, the bottom of heating cylinder is equipped with the nozzle, the output shaft of motor passes motor fixed plate downwards to be connected with the hob, the lower middle segment of hob passes the magazine fixed plate and stretches into in the heating cylinder, the side top of storage box is fixed with the feeder hopper, the feeder hopper with the storage box is linked together.
Further preferably, the middle position of the material box fixing plate is provided with a feed opening, the top of the heating cylinder is provided with a feed opening, and the material storage box is communicated with the heating cylinder through the feed opening and the feed opening.
Further optimally, 1-6 inclined slots are formed in the side wall of the feed inlet.
Further preferably, a fixing ring is arranged at the upper end of the heating cylinder, a heat insulation pad is arranged on the fixing ring, the heating cylinder is fixed with the material box fixing plate through the fixing ring, and the heat insulation pad is fixed between the fixing ring and the material box fixing plate.
Further preferably, the bottom section of the heating cylinder is fixed with heating plates, the upper section of the heating cylinder is fixed with 2 cooling plates, and the cooling plates are positioned below the fixing ring.
Further preferably, a coupling is arranged between the output shaft of the motor and the screw rod, and the output shaft of the motor is detachably and fixedly connected with the screw rod through the coupling.
Further optimally, the screw rod is provided with equal-depth screw grooves, the outer diameter size of the screw rod is 8-16 mm, and the length of the screw groove section is 8-15 times of the outer diameter of the screw rod.
Further preferably, a heat dissipation protection shell is arranged around the heating cylinder, and the heat dissipation protection shell is fixed at the bottom of the material box fixing plate.
Further preferably, the bottom of the feed hopper is provided with an oblique stripper plate, the stripper plate is detachably connected with the feed hopper, and a feed pipe is arranged above the feed hopper.
The beneficial effects of the utility model are as follows:
1. the device has compact and attractive integral structure, realizes the miniaturized design of the plasticizing system of the desktop-level 3D printer, can realize the process from plastic particles to plasticizing extrusion in the minimum space, ensures that the desktop-level 3D printer realizes the function of particle 3D printing, realizes the upgrading and reconstruction from the extrusion of traditional wires to the extrusion of particle consumable materials, and greatly improves the printing capacity and the printing speed of the desktop-level 3D printer.
2. The chute is arranged on the feeding hole of the device, the space of the feeding hole of the heating cylinder is expanded, the plastic particle raw material with the conventional particle size (3-5 mm) can smoothly enter the heating cylinder, the conveying capacity of the extrusion device is improved, the spiral grooves with equal depth are matched, and the extrusion of the nozzle is smoother.
3. The heat dissipation protective shell is arranged around the heating cylinder of the device, so that heat dissipation is facilitated and scalding is prevented; the bottom of feeder hopper is equipped with the stripper that the pull was dismantled, takes out residual material fast when conveniently changing the printing raw materials.
Drawings
Fig. 1 is a schematic perspective view of a part of the structure of the present utility model.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a schematic cross-sectional structure of fig. 1.
Fig. 4 is a schematic perspective view of the whole structure of the present utility model.
Fig. 5 is a schematic perspective view of a cartridge holder and a heater cartridge according to the present utility model.
In the figure: 1. a bracket; 2. a motor fixing plate; 3. a magazine fixing plate; 31. a feed opening; 4. a motor; 5. a storage box; 6. a heating cylinder; 61. a heat sink, 62, a retaining ring; 63. a heat insulating mat; 64. a heating sheet; 65. a feed inlet; 651. a chute; 66. a heat dissipation protective shell; 7. a feed hopper; 71. a feed pipe; 72. a stripper plate; 8. a screw rod; 81. a coupling; 82. a spiral groove; 9. a nozzle;
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "left", "right", "front", "rear", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1-5, the utility model provides a plasticizing extrusion device of a desktop grade particle 3D printer, which comprises a bracket 1, wherein a motor fixing plate 2 and a material box fixing plate 3 are fixed on one side of the bracket 1, a motor 4 is fixed on the motor fixing plate 2, a material box 5 is fixed between the motor fixing plate 2 and the material box fixing plate 3, a heating cylinder 6 is fixed at the bottom of the material box fixing plate 3, a nozzle 9 is arranged at the bottom of the heating cylinder, an output shaft of the motor 4 downwards penetrates through the motor fixing plate 2 and is connected with a screw rod 8, a middle lower section of the screw rod 8 penetrates through the material box fixing plate 3 and stretches into the heating cylinder 6, a feed hopper 7 is fixed above the side of the material box 5, the feed hopper is communicated with the material box 5, plastic particles enter the material box from the feed hopper, the motor drives the screw rod to rotate, the plastic particles are pressed into the heating cylinder by the screw rod and are gradually melted by the heating cylinder, and are extruded from the nozzle.
As a preferred embodiment, the middle position of the material box fixing 3 is provided with a material discharging opening 31, the top of the heating cylinder 6 is provided with a material feeding opening 65, and plastic particles in the material storage box 5 enter the heating cylinder 6 through the material discharging opening 31 and the material feeding opening 65. Wherein, 1-6 chute 651 are arranged on the side wall of the feed inlet 65, the chute expands the feed space of the feed inlet, so that the plastic particle raw material with the conventional particle size (3-5 mm) can smoothly enter the heating cylinder, and the conveying capacity of the device to the plastic particles is improved.
As a preferred embodiment, the upper end of the heating cylinder 6 is provided with a fixed ring 62, the fixed ring is provided with a heat insulation pad 63, the heating cylinder 6 is fixed with the material box fixing plate 3 through the fixed ring 62, the heat insulation pad 63 is fixed between the fixed ring 62 and the material box fixing plate 3, the fixed ring is of a metal structure integrated with the heating cylinder 6, the metal conducts heat quickly when the lower end of the heating cylinder heats, and the heat insulation pad arranged between the fixed ring and the fixed ring can prevent heat from being uploaded to other mechanical parts such as a material storage box, namely, the energy consumption of the heating cylinder is reduced, too much heat uploading can be reduced, and blanking faults caused by early melting of plastic particles can be caused.
As a preferred embodiment, the bottom section of the heating cylinder 6 is fixed with a heating plate 64, the middle section of the heating cylinder 6 adopts a clearance structure, the upper section of the heating cylinder 6 is fixed with 2 cooling fins 61, the cooling fins 61 are positioned below the fixed ring 62, the bottom section of the heating cylinder 6 is heated, the middle section reduces heat uploading, the upper section dissipates heat, the temperature is controlled in a multi-position auxiliary manner, the temperature of the heating cylinder is gradually increased from top to bottom, the inaccuracy of temperature control is reduced, and extrusion faults caused by early melting of plastic particles due to overheating of the upper section of the heating cylinder are reduced.
As a preferred embodiment, a coupling 81 is provided between the output shaft of the motor 4 and the screw rod 8, and the output shaft of the motor 4 and the screw rod 8 are detachably and fixedly connected through the coupling 81. As shown in fig. 3, the length of the screw 8 extending into the heating cylinder 6 can be changed by changing or adjusting the screw 8, so that the distance between the bottom of the screw 8 and the nozzle 9 can be changed. According to the reaction characteristic conditions of the types, viscosity, temperature and pressure of the plastic particles, the purpose of controlling the flow resistance and flow rate of the melt can be achieved by changing the distance, so that the plastic extrusion can be realized by plasticizing and stably extruding a plurality of different plastic particles by using the same plasticizing system.
As a preferred embodiment, the screw rod 8 is provided with a screw groove 82 with equal depth, the outer diameter of the screw rod is 8-16 mm, the length of the screw groove section is 8-15 times of the outer diameter of the screw rod, and the screw grooves are all of an R groove structure, so that the screw rod has the advantages of small volume, light weight, small resistance, smooth conveying and feeding and the like, and the extrusion control is stable without flow interruption.
As a preferred embodiment, the heat dissipation protective shell 66 is disposed around the heating cylinder 6, and the heat dissipation protective shell 66 is fixed at the bottom of the magazine fixing plate 3, and has the anti-scald safety protection functions of local air temperature control and heating cylinder high temperature area.
As a preferred embodiment, the bottom of the feed hopper 7 is provided with an inclined stripper plate 72, and the stripper plate is detachably connected with the feed hopper 7, so that the residual materials can be quickly taken out when the printing materials are conveniently replaced. The feeding pipe 71 is arranged above the feeding hopper 7 and can be used for installing and fixing an automatic feeding hose, and a small-sized feeding machine is matched to realize the automatic feeding function of material shortage.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art. Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (9)
1. Plasticizing extrusion device of desktop level granule 3D printer, including the support, its characterized in that: one side of support is fixed with motor fixed plate and magazine fixed plate, be fixed with the motor on the motor fixed plate, be fixed with the storage box between motor fixed plate and the magazine fixed plate, the bottom of magazine fixed plate is fixed with the heating cylinder, the bottom of heating cylinder is equipped with the nozzle, the output shaft of motor passes motor fixed plate downwards to be connected with the hob, the lower middle section of hob passes the magazine fixed plate and stretches into in the heating cylinder, the side top of storage box is fixed with the feeder hopper, the feeder hopper with the storage box is linked together.
2. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 1, wherein: the middle position of the material box fixing plate is provided with a feed opening, the top of the heating cylinder is provided with a feed opening, and the material storage box is communicated with the heating cylinder through the feed opening and the feed opening.
3. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 2, wherein: and 1-6 inclined slots are formed in the side wall of the feed inlet.
4. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 2, wherein: the upper end of the heating cylinder is provided with a fixed ring, the fixed ring is provided with a heat insulation pad, the heating cylinder is fixed with the material box fixed plate through the fixed ring, and the heat insulation pad is fixed between the fixed ring and the material box fixed plate.
5. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 4, wherein: the bottom section of the heating cylinder is fixed with a heating plate, the upper section of the heating cylinder is fixed with 2 cooling plates, and the cooling plates are positioned below the fixing ring.
6. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 1, wherein: the output shaft of the motor and the screw rod are fixedly connected through the detachable shaft coupling.
7. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 1, wherein: the screw rod is provided with a screw groove with equal depth, the outer diameter of the screw rod is 8-16 mm, and the length of the screw groove section is 8-15 times of the outer diameter of the screw rod.
8. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 1, wherein: the heating cylinder is provided with a heat dissipation protective shell around, and the heat dissipation protective shell is fixed at the bottom of the material box fixing plate.
9. The plasticizing extrusion apparatus of a desktop grade granule 3D printer of claim 1, wherein: the bottom of feeder hopper is equipped with the stripper of slant, the stripper can be dismantled with the feeder hopper and be connected, the inlet pipe has been seted up to the top of feeder hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320072402.7U CN220146699U (en) | 2023-01-10 | 2023-01-10 | Plasticizing extrusion device of desktop grade granule 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320072402.7U CN220146699U (en) | 2023-01-10 | 2023-01-10 | Plasticizing extrusion device of desktop grade granule 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220146699U true CN220146699U (en) | 2023-12-08 |
Family
ID=89021664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320072402.7U Active CN220146699U (en) | 2023-01-10 | 2023-01-10 | Plasticizing extrusion device of desktop grade granule 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220146699U (en) |
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2023
- 2023-01-10 CN CN202320072402.7U patent/CN220146699U/en active Active
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