CN108656552A - A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer - Google Patents

A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer Download PDF

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Publication number
CN108656552A
CN108656552A CN201810777562.5A CN201810777562A CN108656552A CN 108656552 A CN108656552 A CN 108656552A CN 201810777562 A CN201810777562 A CN 201810777562A CN 108656552 A CN108656552 A CN 108656552A
Authority
CN
China
Prior art keywords
box body
lid
binder
feeding mechanism
sliding part
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
Application number
CN201810777562.5A
Other languages
Chinese (zh)
Inventor
方永忠
罗幸恩
黄有斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Orimate Exhibition Ltd By Share Ltd
Original Assignee
Wuhan Orimate Exhibition Ltd By Share Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Orimate Exhibition Ltd By Share Ltd filed Critical Wuhan Orimate Exhibition Ltd By Share Ltd
Priority to CN201810777562.5A priority Critical patent/CN108656552A/en
Publication of CN108656552A publication Critical patent/CN108656552A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive 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
    • B29C64/30Auxiliary operations or equipment
    • B29C64/307Handling of material to be used in additive manufacturing
    • B29C64/321Feeding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y40/00Auxiliary operations or equipment, e.g. for material handling

Abstract

The present invention relates to a kind of belt transmission Double-gear feeding mechanisms of FDM types 3D printer, it includes stepper motor, box body and lid, the output end of stepper motor is fixed in the bottom of box body and output end stretches into box body, cover cap is together in being equipped at intervals with two the second through-holes on the opening at the top of box body and lid, it is equipped in box body and a driving wheel being sequentially connected and two driven wheels is realized by a synchronous belt, driving wheel is fixed on output end, two driven wheels are individually fixed in the lower end of two shafts, the upper end of shaft is stretched out from corresponding second through-hole and one charging gear of connection after stretching out, lid is equipped with the binder component of adjustable binder pressure, binder component includes two binder bearings, binder bearing is corresponded with charging gear.It has the beneficial effect that, using two charging gear chargings of synchronous rotation, prevents slipping phenomenon;Binder pressure continuously adjustable, applicability are good;Reduce the influence that stepper motor generates heat to 3D printing wire rod.

Description

A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer
Technical field
The invention belongs to 3D printer and its accessories fields, and in particular to a kind of belt transmission of FDM types 3D printer is double Gear feeding mechanism.
Background technology
3D printer is also known as three-dimensional 3D printer (3DP), is a kind of cumulative manufacturing technology, i.e. one kind of rapid prototyping technology Machine, it is based on a digital model file, and with adhesive materials such as special wax material, powdery metal or plastics, leads to The jointing material of printing from level to level is crossed to manufacture three-dimensional object.Three-dimensional 3D printer is used to manufacture product at this stage.Successively The mode of printing constructs the technology of object.The principle of 3D printer is that data and raw material are put into 3D printer, machine meeting Product is created from level to level according to program.
3D printer and maximum " ink " used difference lies in it of conventional printer are raw material true, heap There are many medium wide varieties that is various, can be used for printing for the form of folded thin layer, from numerous plastics to metal, ceramics and rubber Gelatin substance.Some 3D printers can also enable that one, the object printed is hard and other end is soft in conjunction with different medium.3D Printing common used material has nylon glass, durability nylon material, gypsum material, aluminum material, titanium alloy, stainless steel, silver-plated, plating Gold, rubber type of material.Currently, 3D printing in fields such as automobile, building, aerospace and medical treatment using very extensive, such as mold Manufacture, parts machining, daily necessities mould processing and configuration design.FDM type 3D printers are clean with operating environment, safe, Simple for process, easy to operate and do not generate rubbish, dimensional accuracy is higher, and surface quality is preferable, is easily assembled and raw material types It is more, the advantages such as expense is low, core component of the feed system as FDM type 3D printers, directly influence molded part precision and Quality.Existing 3D printer feeding mechanism is gear charging, and there are following defects:When individual gears are fed, it is easy to skid With get stuck, cause printing interrupt;When individual gears feed or are directly arranged gear charging by stepper motor, stepper motor is for a long time The high temperature generated after work is easy to be transferred to printed material, causes printed material to soften or melt in fill process, finally makes Obtain feed break;For softer printed material, individual gears are only there are one propulsion point is puted forth effort, and printed material is in feeding-passage content It is flexible and get stuck.
Invention content
The present invention provides a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer, it is intended to overcome individual gears into Material mechanism, which easily gets stuck and easily leads to printed material, is fed the technological deficiencies such as unsuccessfully by thermal softening or thawing.
The technical solution that the present invention solves above-mentioned technical problem is as follows:A kind of belt transmission bidentate of FDM types 3D printer Take turns feeding mechanism comprising the output end of the stepper motor is fixed in stepper motor, box body and lid, the bottom of the box body Side and the box body bottom offer the first through hole stretched into for the output end in the box body, and the cover cap closes It is equipped at intervals with two the second through-holes in opening and the lid at the top of the box body, is equipped in the box body same by one It walks with a driving wheel being sequentially connected and two driven wheels are realized, the driving wheel is fixed on the output end, described in two Driven wheel is individually fixed in the lower end of two shafts, and the upper end of the shaft is stretched out from corresponding second through-hole and after stretching One charging gear of connection, the lid are equipped with the binder component of adjustable binder pressure, and the binder component includes two Binder bearing, the binder bearing correspond with the charging gear and form the seam passed through for 3D printing wire rod between the two Gap.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the binder component further includes fixing piece and sliding part, and the end face of one end of the sliding part is equipped with It is arranged with engaging lug on groove, two sides, the binder bearing, the fixation are rotatably connected on each engaging lug Part includes fixed seat and limiting plate, and the fixed seat is fixedly connected with the lid, the fixed seat be equipped with third through-hole and A nut is fixed in the third through-hole, the nut is connect with tail bolt thread, and one end of the tail bolt is across described Third through-hole simultaneously stretches into the groove, and spring, the slot of one end of the spring and the groove are arranged on the tail bolt Bottom surface abuts, and the other end is abutted with the nut, and one end of the limiting plate is connect with the fixed seat, and the other end stretches to described The one end of sliding part far from the groove, the limiting plate can limit the sliding part below so that the sliding Part can only be moved in the length direction of the limiting plate.
Use the above-mentioned improved benefit of further structure for, by the cooperation of sliding part and fixing piece, spring after the adjustment Compression degree, can continuous effective and equal extent two binder bearing of adjusting to the pressure of the 3D printing wire rod of process, to ensure It feeds smooth non-slip and does not damage 3D printing wire rod by pressure.It only can two binder axis of synchronous adjustment by screwing and unscrewing tail bolt The relevant pressure held, it is very convenient.
Further, the one end of the sliding part far from the groove is equipped with sliding slot, and the bottom of the limiting plate is equipped with convex block, The convex block be caught in the sliding slot and with the sliding slot clearance fit.
Use the above-mentioned improved benefit of further structure for the interval cooperation of convex block and sliding slot, it is ensured that sliding block is only along limit Position plate length direction movement, without along thickness or width direction shaking, ensureing that charging is smooth.
Further, the sliding slot runs through the sliding part in vertical direction, and one end that the limiting plate is equipped with convex block is set It is threadedly coupled with the upper surface of the lid after thering is fixing bolt, the fixing bolt to run through the convex block.
Use the above-mentioned improved benefit of further structure for fixing piece both ends are fixedly connected with lid, in structure more It is firm.
Further, the two sides of the sliding part are additionally provided with guide mouth, by running through described between two guide mouths The guide channel of sliding part is connected to.
Use the above-mentioned improved benefit of further structure that guide mouth is set for, two sides, then 3D printing wire rod is from two guides Mouth and its between guide channel pass through, enhance the ability for preventing 3D printing wire rod from bending, while in the starting stage of charging, Ensure that the 3D printing wire rod after one feeds gear can smoothly be sent to another charging gear.
Further, the lid both sides are arranged with feed nozzle and discharging gate.
The above-mentioned improved benefit of further structure is used to ensure that input and output material is smooth.
Further, the shaft is rotatablely connected with the box body and lid respectively by two bearing parts.
It for, bearing part includes pedestal and bearing to use the above-mentioned improved benefit of further structure, pedestal and lid or box body It is fixedly connected, bearing holder (housing, cover) is set in shaft(Interference fit or key connection), to preferably realize the transmission agency of shaft.
Further, it is bolted between the lid and the box body.
Use the above-mentioned improved benefit of further structure for detachably, easy access is replaced.
Further, the line of centres of the driving wheel and two driven wheels constitutes a triangle.
Use the above-mentioned improved benefit of further structure for transmission is better, and synchronous belt triangular shape is around actively Wheel and two driven wheels reduce installation space.
Further, the sliding part and fixing piece are made of rigid plastics.
Use the above-mentioned improved benefit of further structure for easy processing manufacture and advantage of lower cost.
Compared with prior art, the beneficial effects of the invention are as follows:
1)Using two charging gear chargings of synchronous rotation, 3D printing wire rod is fed gear in feeding mechanism by two Progradation is not in slipping phenomenon;For softer 3D printing wire rod, binder bearing is pressed to corresponding because there are two Gear is fed, and propulsive force is double superposition, therefore each the propulsive force of charging gear mesh 3D printing wire rod reduces, binder bearing The pressure of 3D printing wire rod can be greatly reduced, be not in the case where 3D printing wire rod is pressed down or deforms, simultaneously because often It is a charging gear mesh 3D printing wire rod propulsive force reduce, therefore two charging gears between 3D printing wire rods remain straight line and Internal stress is smaller, is less prone to bending situation, therefore can effectively reduce the abnormal conditions to get stuck by bending and occur;
2)It is connected by a toothed belt transmission between one driving wheel and two driven wheels, effectively for a long time by stepper motor The high temperature generated that works is detached with charging gear, and because there are two driven wheels, therefore has been shared driving wheel and be transferred to by synchronous belt The heat of driven wheel, ensure that work long hours will not cause 3D printing wire rod to soften or melt and get stuck in feeding mechanism;
3)Two binder bearings to by corresponding gap 3D printing wire rod pressure continuously adjustable, be suitable for different thicknesses, The 3D printing wire rod of soft or hard degree and friction coefficient is fed, and applicability is good.
Description of the drawings
Fig. 1 is a kind of schematic diagram of the belt transmission Double-gear feeding mechanism for the FDM types 3D printer of the present invention provided (Do not show that structure is shown using perspective method in charging and discharging mouth and box body);
Fig. 2 is the vertical view of the belt transmission Double-gear feeding mechanism of FDM types 3D printer shown in FIG. 1(Including charging and discharging Mouth);
Fig. 3 is that the belt transmission Double-gear feeding mechanism of FDM types 3D printer shown in FIG. 1 opens the vertical view after lid;
Fig. 4 is the schematic diagram of the sliding part of the belt transmission Double-gear feeding mechanism of FDM type 3D printers shown in Fig. 1;
Fig. 5 is the schematic diagram of the fixing piece of the belt transmission Double-gear feeding mechanism of FDM type 3D printers shown in Fig. 1.
In attached drawing, parts list represented by the reference numerals are as follows:
1. stepper motor;2. box body;3. lid;4. synchronous belt;5. driving wheel;6. driven wheel;7. feeding gear;8. binder axis It holds;9. fixing piece;10. sliding part;11. groove;12. sliding slot;13. guide mouth;14. fixed seat;15. limiting plate;16. nut; 17. tail bolt;18. spring;19. convex block;20. feed nozzle;21. discharging gate;22. bearing part;23.3D printing wire rod.
Specific implementation mode
Principles and features of the present invention are described below in conjunction with drawings and the specific embodiments, example is served only for solving The present invention is released, is not intended to limit the scope of the present invention.
As shown in Fig. 1 to 5, the present invention provides a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer, packet Include stepper motor 1, box body 2 and lid 3, the bottom of the box body 2 be fixed on the output end side of the stepper motor 1 and 2 bottom of the box body offers the first through hole stretched into for the output end in the box body 2, and the lid 3 is covered on described Two the second through-holes are equipped at intervals in the opening and the lid 3 at 2 top of box body, are equipped with by a synchronization in the box body 2 Realize that a driving wheel 5 being sequentially connected and two driven wheels 6, the driving wheel 5 are fixed on the output end, two institutes with 4 The lower end that driven wheel 6 is individually fixed in two shafts is stated, the upper end of the shaft is stretched out and stretched from corresponding second through-hole A charging gear 7 is connected after going out, the lid 3 is equipped with the binder component of adjustable binder pressure, the binder component packet Two binder bearings 8 are included, the binder bearing 8 is corresponded with the charging gear 7 and formed between the two for 3D printing line The gap that material 23 passes through.
In one embodiment of the invention, the binder component further includes fixing piece 9 and sliding part 10, the sliding part The end face of 10 one end is equipped with groove 11, is arranged with engaging lug on two sides, the upper rotation connection of each engaging lug It includes fixed seat 14 and limiting plate 15 to have the binder bearing 8, the fixing piece 9, and the fixed seat 14 is fixed with the lid 3 Connection, the fixed seat 14 are equipped in third through-hole and the third through-hole and are fixed with a nut 16, the nut 16 and tail Bolt 17 is threadedly coupled, and one end of the tail bolt 17 passes through the third through-hole and stretches into the groove 11, the tail spiral shell Spring 18 is arranged on bolt 17, one end of the spring 18 is abutted with the groove bottom of the groove 11, the other end and the nut 16 abut, and one end of the limiting plate 15 is connect with the fixed seat 14, and the other end stretches to the sliding part 10 far from described recessed One end of slot 11, the limiting plate 15 can limit the sliding part 10 below so that the sliding part 10 only can be The length direction of the limiting plate 15 moves.
Further, the one end of the sliding part 10 far from the groove 11 is equipped with sliding slot 12, the bottom of the limiting plate 15 Equipped with convex block 19, the convex block 19 be caught in the sliding slot 12 and with 12 clearance fit of the sliding slot.
In another embodiment of the present invention, limiting plate bottom does not set convex block but the gear extended downwardly is arranged in both sides Plate is to form the channel-shaped position limiting structure that Open Side Down, and the sliding part is fitted into the slot, then width of the sliding part in limiting plate And effective limit also can be obtained in thickness direction, prevents from swinging.
Further, the sliding slot 12 runs through the sliding part 10 in vertical direction, and the limiting plate 15 is equipped with convex block 19 One end be equipped with fixing bolt, the fixing bolt run through the convex block 19 after be threadedly coupled with the upper surface of the lid 3.
Further, the two sides of the sliding part 10 are additionally provided with guide mouth 13, by passing through between two guide mouths 13 Wear the guide channel connection of the sliding part 10.
Further, 3 both sides of the lid are arranged with feed nozzle 20 and discharging gate 21.
It should be noted that in order to ensure binder bearing and feed the gap continuously adjustable between gear, feed nozzle goes out Material mouth, guide mouth towards the gap side be disposed as sharp mouth shape, it is specific as shown in Figure 2.
Further, the shaft is rotatablely connected with the box body 2 and lid 3 respectively by two bearing parts 22.
Further, it is bolted between the lid 3 and the box body 2.
Further, the line of centres of the driving wheel 5 and two driven wheels 6 constitutes a triangle.
Further, the sliding part 10 and fixing piece 9 are made of rigid plastics.
The specific rigid plastics can be polypropylene, polyethylene or polytetrafluoroethylene (PTFE).
It should be noted that the model of the power of stepper motor, lid, box body, driving wheel, driven wheel, charging gear etc. The those of ordinary skill in the art such as size oneself can design as needed and selection, do not repeat in the present invention.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer, which is characterized in that including stepper motor(1), box Body(2)And lid(3), the box body(2)Bottom be fixed on the stepper motor(1)Output end side and the box Body(2)Bottom is offered stretches into the box body for the output end(2)Interior first through hole, the lid(3)It is covered on described Box body(2)The opening at top and the lid(3)On be equipped at intervals with two the second through-holes, the box body(2)It is interior to be equipped with by one Synchronous belt(4)Realize a driving wheel being sequentially connected(5)With two driven wheels(6), the driving wheel(5)It is fixed on described Output end, two driven wheels(6)It is individually fixed in the lower end of two shafts, the upper end of the shaft is from corresponding described the One charging gear of connection after two through-holes are stretched out and stretched out(7), the lid(3)It is equipped with the binder group of adjustable binder pressure Part, the binder component include two binder bearings(8), the binder bearing(8)With the charging gear(7)Correspond and It is formed between the two for 3D printing wire rod(23)The gap passed through.
2. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 1, feature exist In the binder component further includes fixing piece(9)And sliding part(10), the sliding part(10)One end end face be equipped with it is recessed Slot(11), be arranged with engaging lug on two sides, be rotatably connected to the binder bearing on each engaging lug(8), institute State fixing piece(9)Including fixed seat(14)And limiting plate(15), the fixed seat(14)With the lid(3)It is fixedly connected, institute State fixed seat(14)It is equipped in third through-hole and the third through-hole and is fixed with a nut(16), the nut(16)With tail spiral shell Bolt(17)It is threadedly coupled, the tail bolt(17)One end pass through and the third through-hole and stretch into the groove(11)It is interior, it is described Tail bolt(17)On be arranged with spring(18), the spring(18)One end and the groove(11)Groove bottom abut, it is another End and the nut(16)It abuts, the limiting plate(15)One end and the fixed seat(14)Connection, the other end stretch to described Sliding part(10)Far from the groove(11)One end, the limiting plate(15)It can be to the sliding part below(10)It carries out Limit is so that the sliding part(10)It only can be in the limiting plate(15)Length direction movement.
3. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 2, feature exist In the sliding part(10)Far from the groove(11)One end be equipped with sliding slot(12), the limiting plate(15)Bottom be equipped with Convex block(19), the convex block(19)It is caught in the sliding slot(12)It is interior and with the sliding slot(12)Clearance fit.
4. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 3, feature exist In the sliding slot(12)Run through the sliding part in vertical direction(10), the limiting plate(15)It is equipped with convex block(19)One End is equipped with fixing bolt, and the fixing bolt runs through the convex block(19)Afterwards with the lid(3)Upper surface be threadedly coupled.
5. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 2, feature exist In the sliding part(10)Two sides be additionally provided with guide mouth(13), two guide mouths(13)Between by running through described Sliding part(10)Guide channel connection.
6. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 2, feature exist In the lid(3)Both sides are arranged with feed nozzle(20)And discharging gate(21).
7. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to claim 1, feature exist In the shaft passes through two bearing parts(22)Respectively with the box body(2)And lid(3)Rotation connection.
8. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to any one of claims 1 to 7, It is characterized in that, the lid(3)With the box body(2)Between be bolted.
9. a kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer according to any one of claims 1 to 7, It is characterized in that, the driving wheel(5)With two driven wheels(6)The line of centres constitute a triangle.
10. band Double-gear feeding mechanism is passed according to a kind of belt of FDM types 3D printer of claim 2 to 5 any one of them, It is characterized in that, the sliding part(10)And fixing piece(9)It is made of rigid plastics.
CN201810777562.5A 2018-07-16 2018-07-16 A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer Pending CN108656552A (en)

Priority Applications (1)

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CN201810777562.5A CN108656552A (en) 2018-07-16 2018-07-16 A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer

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Application Number Priority Date Filing Date Title
CN201810777562.5A CN108656552A (en) 2018-07-16 2018-07-16 A kind of belt transmission Double-gear feeding mechanism of FDM types 3D printer

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Citations (9)

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Publication number Priority date Publication date Assignee Title
CN205148934U (en) * 2015-11-20 2016-04-13 余金文 Extrusion device suitable for 3D printer is piled up in melting
WO2016082723A1 (en) * 2014-11-25 2016-06-02 广州航新航空科技股份有限公司 Printer base and printer with same, and data printer for airplanes
CN206154720U (en) * 2016-10-27 2017-05-10 山东科技大学 Belt FDM type 3D printer wire drive feed unit
CN106827507A (en) * 2017-03-14 2017-06-13 东莞市君跃展示设计有限公司 The 3D printing head assembly of compatible soft or hard material
US20170190109A1 (en) * 2015-12-30 2017-07-06 Makerbot Industries, Llc Multi-filament three-dimensional printing
KR20170111686A (en) * 2016-03-29 2017-10-12 주식회사 큐비콘 Extruder having a lever
CN206812445U (en) * 2017-04-05 2017-12-29 广州城建职业学院 A kind of 3D printer synchronous feeding mechanism
CN207273881U (en) * 2017-08-30 2018-04-27 江苏三迪时空网络科技有限公司 The feed device of 3D printer
CN208428685U (en) * 2018-07-16 2019-01-25 武汉瑞美展览股份有限公司 A kind of belt transmission Double-gear feeding mechanism of FDM type 3D printer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016082723A1 (en) * 2014-11-25 2016-06-02 广州航新航空科技股份有限公司 Printer base and printer with same, and data printer for airplanes
CN205148934U (en) * 2015-11-20 2016-04-13 余金文 Extrusion device suitable for 3D printer is piled up in melting
US20170190109A1 (en) * 2015-12-30 2017-07-06 Makerbot Industries, Llc Multi-filament three-dimensional printing
KR20170111686A (en) * 2016-03-29 2017-10-12 주식회사 큐비콘 Extruder having a lever
CN206154720U (en) * 2016-10-27 2017-05-10 山东科技大学 Belt FDM type 3D printer wire drive feed unit
CN106827507A (en) * 2017-03-14 2017-06-13 东莞市君跃展示设计有限公司 The 3D printing head assembly of compatible soft or hard material
CN206812445U (en) * 2017-04-05 2017-12-29 广州城建职业学院 A kind of 3D printer synchronous feeding mechanism
CN207273881U (en) * 2017-08-30 2018-04-27 江苏三迪时空网络科技有限公司 The feed device of 3D printer
CN208428685U (en) * 2018-07-16 2019-01-25 武汉瑞美展览股份有限公司 A kind of belt transmission Double-gear feeding mechanism of FDM type 3D printer

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