CN220146718U - Plasticizing structure of desktop grade granule 3D printer - Google Patents
Plasticizing structure of desktop grade granule 3D printer Download PDFInfo
- Publication number
- CN220146718U CN220146718U CN202320072363.0U CN202320072363U CN220146718U CN 220146718 U CN220146718 U CN 220146718U CN 202320072363 U CN202320072363 U CN 202320072363U CN 220146718 U CN220146718 U CN 220146718U
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- cylinder
- heating
- thick bamboo
- printer
- plasticizing
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- 239000008187 granular material Substances 0.000 title claims description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 22
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 22
- 241001330002 Bambuseae Species 0.000 claims description 22
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 22
- 239000011425 bamboo Substances 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 20
- 229920003023 plastic Polymers 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 5
- 229920000426 Microplastic Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a plasticizing structure of a desktop grade particle 3D printer, which comprises a motor shaft, a screw rod and a coupler for connecting the screw rod and the motor shaft, wherein a heating cylinder is arranged below the screw rod, the middle lower section of the screw rod stretches into the heating cylinder, the heating cylinder is divided into an upper cylinder, a middle cylinder and a lower cylinder, a fixed ring and a radiating fin are arranged on the upper cylinder of the heating cylinder, a heat insulation pad is arranged on the fixed ring, a funnel-shaped feeding hole is arranged above the upper cylinder, a heating fin and a temperature thermocouple are arranged on the outer wall of the lower cylinder of the heating cylinder, and a nozzle is fixed at the bottom of the lower cylinder, so that the problem of limitation of a demand space and particle diameter on a plasticizing system of the desktop grade 3D printer is solved, and plasticizing and stable output of conventional plastic and modified particles thereof are realized, thereby the desktop grade 3D printer is manufactured by using conventional plastic and modified particles thereof.
Description
Technical Field
The utility model relates to the field of small 3D printing equipment, in particular to a plasticizing structure of a desktop-level 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 core of granule 3D printing is plasticizing part, and large-scale granule 3D printer is direct on the technical development basis of extruder, consults or borrows the plasticizing system of extruder, and its plasticizing system's extrusion screw rod, feed cylinder are the spare part more than diameter specification D30, through this kind of equipment, send into plasticizing system with granule from one end, screw rod rotary motion, through the cooperation of the syllogic region and the heating system of screw rod, the extrusion of fluid is realized to other end, cooperation die head structure to realize the processing of materials such as pipe, board, piece, line.
The small 3D printer lacks practical application experience, the use condition of 3D printing of particles cannot be met in space only by reducing the unit components of the plasticizing system of the imitation extruder, the equivalent ratio of the plasticizing system of the imitation extruder is reduced, the diameter of a screw rod is too small, the strength cannot be ensured, the functions of each area of a three-section screw rod cannot be exerted, meanwhile, the depth of a screw groove is limited, the normal plastic and modified particles (with the particle size of 3-5 mm) can not normally enter the inside of the screw groove, the extrusion cutoff phenomenon can occur, stable plasticization and extrusion are difficult to realize, and therefore, the conventional desktop grade 3D printer generally uses plastic linear consumable materials 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 the defects of the prior art, the utility model provides a plasticizing structure of a desktop grade particle 3D printer, solves the problem of limitation of a required space and particle diameter to a plasticizing system of the desktop grade 3D printer, and realizes plasticizing and stable output of conventional plastic and modified particles (particle size is 3-5 mm), thereby realizing processing and manufacturing of the desktop grade 3D printer by using the conventional plastic and the modified particles thereof so as to improve the problems existing in the prior art.
The utility model is realized by the following technical scheme:
the utility model provides a plasticizing structure of desktop level granule 3D printer, includes motor shaft, hob and the shaft coupling of connecting hob and motor shaft, the hob below is equipped with the heating cylinder, and the well hypomere of hob stretches into in the heating cylinder, the heating cylinder divide into section of thick bamboo, well section of thick bamboo and a lower section of thick bamboo, be equipped with solid fixed ring and fin on the last section of thick bamboo of heating cylinder, be equipped with the heat insulating pad on the solid fixed ring, the funnel-shaped feed inlet has been seted up to the top of going up the section of thick bamboo, be equipped with heating plate and temperature thermocouple on the lower section of thick bamboo outer wall of heating cylinder, the bottom of a lower section of thick bamboo is fixed with the nozzle.
Further preferably, the top of hob has been seted up the internal thread hole, be equipped with adjusting screw on the internal thread hole, the top of hob is equipped with a plurality of annular constant head tanks, has still seted up the equidistant helicla flute on the hob, and the helicla flute is R groove structure.
Further preferably, the adjusting screw is located between the motor shaft and the screw rod, the screw rod is fixed by adjusting the adjusting screw and matching with the positioning groove and the coupler, and the distance between the bottom of the screw rod and the nozzle can be adjusted.
Further preferably, the upper cylinder and the middle cylinder of the heating cylinder adopt a clearance structure, the fixing ring is fixed at the upper end of the upper cylinder, 2 platforms are arranged on the side wall of the upper cylinder, the radiating fins are fixed on the platforms, and the radiating fins are positioned below the fixing ring.
Further optimally, 1-6 inclined slots are also arranged on the feed inlet.
Further preferably, the upper end of the lower cylinder of the heating cylinder is provided with a fixing hole and a temperature measuring hole, the temperature thermocouple is arranged inside the temperature measuring hole, and the heating plate is fixed on the outer wall of the lower cylinder below the temperature measuring hole.
The beneficial effects of the utility model are as follows:
1. the utility model provides a demand space and the restriction problem of particle diameter of desktop level 3D printer plasticizing system, make the granule get into the heating cylinder smoothly to realized the plasticization and the stable output of conventional plastic and modified granule (particle diameter 3 ~ 5 mm), and then realized using conventional plastic and modified granule of desktop level 3D printer and processed manufacturing.
2. The novel medium heating cylinder is provided with a plurality of inclined grooves on the feeding port, the spiral grooves are matched with the spiral rod to form equal depth, plastic and modified particles are smoothly fed, and the spiral grooves are of an R groove structure, so that the novel medium heating cylinder has the advantages of being quick in motion response, small in resistance, smooth in conveying and feeding and stable in extrusion control.
3. The utility model discloses in through adjusting bolt, the cooperation constant head tank and shaft coupling are fixed the hob, adjustable hob bottom with distance between the nozzle has realized the adjustable of this critical position, has very important meaning to miniaturized 3D printer's plasticizing system, according to plastic granules's kind, viscosity, temperature and pressure's reaction characteristic condition, can reach the purpose of control melt flow resistance and flow through adjusting this clearance to can realize the plasticization of using same plasticizing system to multiple different plastic granules and stably extrude.
4. The utility model discloses the heating plate heating on the lower section of thick bamboo of well heating cylinder, well section of thick bamboo and last section of thick bamboo adopt the keep away empty structure, reduce heat transfer, are equipped with fin and heat insulating mattress on the last section of thick bamboo, and the fin dispels the heat with higher speed, and the heat insulating mattress prevents the heat and uploads, and the supplementary accuse temperature of multiposition solves the unbalanced extrusion trouble that arouses of heating cylinder control by temperature change.
Drawings
Fig. 1 is a schematic perspective view of the plasticizing structure.
Fig. 2 is a side view of the present plasticizing structure.
Fig. 3 is a schematic cross-sectional structure of the plasticizing structure.
Fig. 4 is a schematic perspective view of a heating cylinder in the plasticizing structure.
Fig. 5 is a side view of a heating cartridge in the present plasticizing structure.
Fig. 6 is a top view of a heating cylinder in the present plasticizing structure.
In the figure: 1. a motor shaft; 2. a coupling; 21. a fixing hole; 3. a screw rod; 31. an adjusting screw; 32. a spiral groove; 4. a heat insulating mat; 5. a fixing ring; 6. a heat sink; 7. a heating cylinder; 71. a cylinder is arranged; 711. a feed inlet; 712. a chute; 713. a platform; 72. a middle cylinder; 73. a lower cylinder; 731. a temperature measuring hole; 732. a temperature thermocouple; 8. a heating sheet; 9. and (3) 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. 1-6, the utility model provides a plasticizing structure of a desktop-level particle 3D printer, which comprises a motor shaft 1, a screw rod 3 and a coupler 2 for connecting the screw rod with the motor shaft, wherein a fixing hole 21 is formed in the outer wall of the coupler, the upper end of the coupler is connected with the motor shaft 1 through the fixing hole and a screw, and the lower end of the coupler 2 is connected with the screw rod 3 through the fixing hole and the screw. A heating cylinder 7 is arranged below the screw rod 3, and the middle lower section of the screw rod 3 stretches into the heating cylinder 7. The heating cylinder 7 is divided into an upper cylinder 71, a middle cylinder 72 and a lower cylinder 73, the upper cylinder 71 of the heating cylinder is provided with a fixed ring 5 and a radiating fin 6, the fixed ring 5 is provided with a heat insulation pad 4, a funnel-shaped feeding port 711 is arranged above the upper cylinder 71, the outer wall of the lower cylinder 73 of the heating cylinder 7 is provided with a heating fin 8 and a temperature thermocouple 732, and the bottom of the lower cylinder 73 is fixedly provided with a nozzle 9.
The screw rod rotates, and the particle raw material is spirally pressed into the heating cylinder along with the spiral groove of the screw rod from the feeding hole 711, continuously goes deep through the spiral, and continuously heats and maintains the temperature reaching the internal raw material plasticizing requirement through the electric heating sheet by the heating cylinder, so that the particle raw material reaching the lower cylinder is completely plasticized and melted, and finally is smoothly extruded through the outlet. The heat insulation pad 4 is made of a thermosetting material and is fixed on the fixing ring to isolate the heating cylinder from mechanical parts matched with the heating cylinder in installation, and the heat insulation pad has the characteristic of preventing heat from being uploaded.
As a preferred implementation, the top of hob 3 is equipped with a plurality of annular constant head tanks, and the internal thread hole has been seted up at hob 3's top, be equipped with adjusting screw 31 on the internal thread hole, adjusting screw is located between motor shaft 1 and hob 3, through adjusting screw 31, then cooperates constant head tank and shaft coupling 2 are fixed the hob, adjustable hob 3 bottom with distance between the nozzle, according to plastic granule's kind, viscosity, temperature and pressure's reaction characteristic condition, adjust this distance can reach control melt flow resistance and flow's purpose to realize multiple different plastic granule plasticization and stable extrusion. The spiral groove 32 with equal depth is further formed in the spiral rod 3, the spiral groove 32 is of an R groove structure, and the spiral rod has the advantages of being fast in motion response, small in resistance, fast in feeding and smooth in feeding, and nozzle extrusion control is stable.
As a preferred embodiment, the upper cylinder 71 and the middle cylinder 72 of the heating cylinder 7 adopt a clearance structure, and the design can effectively reduce heat storage and transmission, and cooperate with the cooling fin 6 to accelerate heat dissipation, thereby facilitating temperature control, gradually increasing the temperature of the heating cylinder from top to bottom and preventing blanking faults caused by excessive heat convection.
As a preferred embodiment, the fixing ring 5 is fixed at the upper end of the upper cylinder 71, 2 platforms 713 are arranged on the side wall of the upper cylinder, the cooling fin 6 is fixed on the platforms, the cooling fin is located below the fixing ring 5, the platforms are convenient for fixing the cooling fin, and a plurality of through holes are further formed in the fixing ring and are convenient for being fixedly connected with other mechanical components.
As a preferred embodiment, the feeding hole 711 is further provided with 1-6 chute 712, and the purpose of the chute is to expand the feeding space of the feeding hole, meet the smooth entry of the granular raw material, and improve the conveying capability of the plasticizing structure.
As a preferred embodiment, the upper end of the lower cylinder 73 of the heating cylinder is provided with a fixing hole and a temperature measuring hole 731, the temperature thermocouple 732 is disposed inside the temperature measuring hole 731, and is near 2mm away from the inner wall of the lower cylinder of the heating cylinder, so that the internal temperature can be accurately measured, the influence of heat dissipation in the upper region on the temperature fluctuation is reduced to the maximum extent, and the heating plate 8 is fixed on the outer wall of the lower cylinder 73 below the temperature measuring hole, so as to heat the heating cylinder.
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 (6)
1. The utility model provides a plasticizing structure of desktop level granule 3D printer, includes motor shaft (1), hob (3) and coupling (2) of connecting hob and motor shaft, its characterized in that: the utility model discloses a heating device, including screw rod (3), heating section of thick bamboo (7) are equipped with heating section of thick bamboo (7) below, and the lower section of thick bamboo of stretching into in the heating section of thick bamboo, heating section of thick bamboo (7) divide into upper cylinder (71), well section of thick bamboo (72) and lower section of thick bamboo (73), be equipped with solid fixed ring (5) and fin (6) on heating section of thick bamboo upper cylinder (71), be equipped with heat insulating pad (4) on the solid fixed ring, funnel-shaped feed inlet (711) have been seted up to the top of upper cylinder (71), be equipped with heating plate (8) and thermocouple (732) on lower section of thick bamboo (73) outer wall of heating section of thick bamboo, the bottom of lower section of thick bamboo is fixed with nozzle (9).
2. The plasticizing structure of a desktop grade granule 3D printer of claim 1, wherein: the top of hob (3) has seted up the internal thread hole, be equipped with adjusting screw (31) on the internal thread hole, the top of hob (3) is equipped with a plurality of annular constant head tanks, has still seted up equidistant helicla flute (32) on the hob, and the helicla flute is R groove structure.
3. The plasticizing structure of a desktop grade granule 3D printer of claim 2, wherein: the adjusting screw (31) is located between the motor shaft (1) and the screw rod (3), the screw rod (3) is fixed by adjusting the adjusting screw (31) and matching the positioning groove and the coupler (2), and the distance between the bottom of the screw rod (3) and the nozzle (9) can be adjusted.
4. The plasticizing structure of a desktop grade granule 3D printer of claim 1, wherein: the upper cylinder (71) and the middle cylinder (72) of the heating cylinder adopt an empty-avoiding structure, the fixing ring (5) is fixed at the upper end of the upper cylinder (71), 2 platforms (713) are arranged on the side wall of the upper cylinder (71), the radiating fins (6) are fixed on the platforms, and the radiating fins (6) are located below the fixing ring (5).
5. The plasticizing structure of a desktop grade granule 3D printer of claim 1, wherein: and 1-6 inclined slots (712) are also formed in the feeding hole (711).
6. The plasticizing structure of a desktop grade granule 3D printer of claim 1, wherein: the upper end of the lower heating cylinder (73) is provided with a fixing hole and a temperature measuring hole (731), the temperature thermocouple (732) is arranged inside the temperature measuring hole, and the heating plate (8) is fixed on the outer wall of the lower heating cylinder (73) below the temperature measuring hole (731).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320072363.0U CN220146718U (en) | 2023-01-10 | 2023-01-10 | Plasticizing structure of desktop grade granule 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320072363.0U CN220146718U (en) | 2023-01-10 | 2023-01-10 | Plasticizing structure of desktop grade granule 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220146718U true CN220146718U (en) | 2023-12-08 |
Family
ID=89018101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320072363.0U Active CN220146718U (en) | 2023-01-10 | 2023-01-10 | Plasticizing structure of desktop grade granule 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220146718U (en) |
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2023
- 2023-01-10 CN CN202320072363.0U patent/CN220146718U/en active Active
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