CN109366997B

CN109366997B - 3d printing pen

Info

Publication number: CN109366997B
Application number: CN201811426269.0A
Authority: CN
Inventors: 朱协彬; 陈志浩; 祝夫文; 桂凯旋; 周聪
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2020-12-01
Anticipated expiration: 2038-11-27
Also published as: CN109366997A

Abstract

The invention discloses a 3d printing pen which comprises a first printing pen head, a printing pen body, a feeding pipe and a mixing barrel, wherein the feeding pipe is a four-way pipe and is arranged inside the printing pen body, one end, far away from a liquid material tank, of the feeding pipe is connected with the mixing barrel, and one end, far away from the mixing barrel, of a guide hose extends to the bottom of the printing pen body and is connected with the first printing pen head. The invention ensures the proportion of photosensitive resin liquid of each feeding pipe, ensures the purity of required color, and simultaneously modulates according to the required amount, on one hand, the photosensitive resin liquid can be stirred by the second spiral stirring shaft and the first spiral stirring shaft in the extrusion process, on the other hand, a pressure is provided for the photosensitive resin liquid until the extrusion plate is contacted with the top of the mixing barrel, so that the photosensitive resin liquid can be conveniently and completely discharged, the waste is prevented, the size of the inner aperture of the printing pen head can be conveniently adjusted, the disassembly is not needed, and the use is convenient.

Description

3d printing pen

Technical Field

The invention relates to the technical field of 3d printing pens, in particular to a 3d printing pen.

Background

Along with the development of science and technology, 3d printing technique more and more generally is applied to each field, meanwhile, 3d printing technique also appears in people's life with the form of more kinds of product, 3d printing pen is one of them, current hand-held type 3d printing pen mainly divide into hot melt formula and photocuring formula two kinds, what photocuring formula 3d printing pen extruded is liquid photosensitive resin, solidification moulding under the effect of ultraviolet irradiation, have certain advantage in its processing flexibility and the texture fineness of the final printing body, photosensitive material's optional and combination kind and scope are also very flexible.

Although current 3d print pen can utilize the principle of three primary colors to modulate different colours to it, thereby write and print, can't ensure two kinds and the proportion of three kinds of colour mixed collocation in the modulation process, thereby can't ensure the purity of required colour, simultaneously when using how much of uncontrollable quantity, cause the residue in print pen inside easily, when needs carry out other colours, can't modulate it, simultaneously present print pen's nib all is dismantled the nib through the cooperation between the screw thread, thereby change other nibs, thereby adjust the size in ejection of compact aperture, use inconveniently, it is too loaded down with trivial details to change.

Disclosure of Invention

The present invention is directed to a 3d printing pen to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a d-type printing pen comprises a first printing pen head, a printing pen body, a feeding pipe and a mixing barrel, wherein the feeding pipe is a four-way pipe and is arranged inside the printing pen body, three end parts of the feeding pipe extend to the top of the printing pen body, the tops of the printing pen body at the positions of the three feeding pipes are connected with liquid material tanks, electric extrusion cylinders are inserted at the tops of the liquid material tanks in a penetrating manner, one ends of the feeding pipes, far away from the liquid material tanks, are connected with the mixing barrel, three intermediate positions extending to one side of the feeding pipe at the top of the printing pen body are fixed with material control boxes, sliding grooves are formed in two sides of the inner parts of the material control boxes, hollow material control plates are arranged inside the material control boxes, sliding blocks matched with the sliding grooves are arranged on two sides of the material control plates, second scale marks are uniformly arranged on one side of the tops of the material control plates, one ends of the material control plates are, one end of the rack, which is far away from the material control plate, penetrates through the feeding pipe and extends to the interior of the printing pen body, the top of the rack is provided with a first scale mark corresponding to a second scale mark, the interior of the printing pen body, which is far away from one side of the material control box, of the feeding pipe is provided with a gear matched with the rack, one side of the interior of the gear is provided with a limiting groove, a rotating shaft is inserted into the gear, one side of the rotating shaft is provided with a limiting block matched with the limiting groove, one end of the rotating shaft extends to the outer side of the printing pen body and is connected with a rotating handle, one end of the rotating shaft, which is far away from the rotating handle, is provided with an auto-locking block, the interior of the printing pen body, which is at the position of the auto-locking block, is provided with an auto-locking groove matched with the auto-locking block, the top of the mixing barrel is welded with a connecting groove, the, the inner wall of a second spiral stirring shaft at one end of the second spiral stirring shaft far away from the connecting groove is provided with a second magnet, the interior of the second spiral stirring shaft is provided with a first spiral stirring shaft, the end of the first spiral stirring shaft extending to the interior of the second spiral stirring shaft is provided with a first magnet matched with the second magnet, the bottom of the mixing cylinder is welded with an electric telescopic rod, the output end of the electric telescopic rod extends to the interior of the mixing cylinder and is connected with an extrusion plate, one end of the first spiral stirring shaft far away from the second spiral stirring shaft is connected with the extrusion plate, the extrusion plate at one side of the electric telescopic rod is connected with a material guide hose, one side of the mixing cylinder is uniformly provided with a scale ruler corresponding to the first spiral stirring shaft and the second spiral stirring shaft, one end of the material guide hose far away from the mixing cylinder extends to the bottom of the printing pen body and is connected with a first printing pen head, and the printing pen body bottom in the first printing pen head outside all is provided with the photocuring light source, second printing pen head and third printing pen head have been cup jointed in proper order to the bottom of first printing pen head, the both sides of first printing pen head and second printing pen head bottom all are provided with the draw-in groove, the both sides at second printing pen head and third printing pen head top all are provided with the fixture block of mutually supporting with the draw-in groove, and the inside of fixture block all is provided with third magnet, the inside of the first printing pen head of draw-in groove position department is provided with the fourth magnet of mutually supporting with third magnet, the inside battery that all is provided with of printing pen body of first printing pen head both sides, the controller is installed to one side of printing pen body, and the controller is connected with electric telescopic handle, battery and photocuring light source all electricity.

Preferably, the top end inside the feeding pipe is provided with internal threads, and one end of the liquid material tank is provided with external threads matched with the internal threads of the feeding pipe.

Preferably, the length of the first spiral stirring shaft, the length of the hollow part inside the second spiral stirring shaft and the thickness of the top of the mixing barrel at the height inside the connecting groove are all equal.

Preferably, the aperture of the first printing pen point, the aperture of the second printing pen point and the aperture of the third printing pen point are distributed in a descending trend.

Preferably, the top of the mixing cylinder is provided with a thread groove matched with the external thread of the second spiral stirring shaft, and the diameter of one end of the second spiral stirring shaft is larger than that of the thread groove at the top of the mixing cylinder.

Preferably, one end of the hose close to the extrusion plate is provided with a control valve.

Compared with the prior art, the invention has the beneficial effects that:

1. the 3d printing pen is characterized in that the material control boxes are fixed at the middle positions of one side of the feeding pipe at the top of the printing pen body, the two sides of the inner part of each material control box are provided with sliding grooves, the inner part of each material control box is provided with a hollow material control plate, the two sides of each material control plate are provided with sliding blocks matched with the sliding grooves, one side of the top of each material control plate is uniformly provided with second scale marks, one end of each material control plate is connected with a rack, one end of each rack, far away from the material control plate, penetrates through the feeding pipe and extends into the printing pen body, the top of each rack is provided with first scale marks corresponding to the second scale marks, the inner part of the printing pen body, far away from the material control box, is provided with a gear matched with the rack, the gear is driven to rotate by rotating the rotary handle, so as to drive the rack to move towards the outer side of the feeding pipe, and the first scale marks at the top of the rack correspond to the second scale marks at the top of, thereby pulling accuse flitch and to the inside removal of inlet tube, thereby control the proportion of each inlet tube ejection of compact, because the inside pressure that gets into the inlet tube is the same, simultaneously each inlet tube internal diameter is the same, thereby guarantee that the feed volume in the same time is the same, because the inlet tube is inside to be square, and the area of feed volume is s = length x width, and the width of inlet tube internal diameter is the same, thereby the area of feed volume is directly proportional with the bore length that hollow form accuse flitch stretches out, thereby through the proportion of the ejection of compact of hollow form accuse flitch control tricolor on each inlet tube, it is spacing to it through mutually supporting of slider and spout simultaneously, thereby prevent to pull out the accuse flitch from the inside complete of accuse flitch box, be convenient for accurate modulation tricolor mixed proportion, ensure the purity of required colour.

2. This 3d printing pen, set up the spacing groove through the one side in the gear inside, and alternate the pivot in the inside of gear, and one side of pivot sets up the stopper of mutually supporting with the spacing groove, and extend to the outside of printing pen body and be connected with rotatory handle in the one end of pivot, and the one end of keeping away from rotatory handle in the pivot sets up the auto-lock piece, and be provided with the auto-lock groove of mutually supporting with the auto-lock piece in the printing pen body of auto-lock piece position department, through with changeing epaxial stopper along the spacing groove to the inside promotion of printing pen body, thereby extend to the auto-lock inslot portion from the auto-lock piece and carry out the auto-lock, prevent gear shifting, influence the accuracy of proportion.

3. The 3d printing pen is characterized in that a connecting groove is welded at the top of a mixing cylinder, a second spiral stirring shaft is arranged at the top end inside the mixing cylinder, one end of the second spiral stirring shaft extends to the inside of the connecting groove, a first spiral stirring shaft is arranged inside the second spiral stirring shaft, the second spiral stirring shaft can be driven to rotate through the mutual matching of the second spiral stirring shaft and a threaded groove at the top of the mixing cylinder, photosensitive resin liquid is stirred and mixed, the second spiral stirring shaft is driven to move towards the inside of the connecting groove, when the second spiral stirring shaft is in mutual contact with the top of the connecting groove, the inner wall of the second spiral stirring shaft is matched with the first spiral stirring shaft, so that the first spiral stirring shaft is pushed to move towards the inside of the second spiral stirring shaft through an electric telescopic rod, and photosensitive resin liquid is stirred and mixed at a second time, the mixing of the three primary colors is convenient, and the use is convenient.

4. The 3d printing pen is characterized in that an electric telescopic rod is welded at the bottom of a mixing cylinder, the output end of the electric telescopic rod extends into the mixing cylinder and is connected with an extrusion plate, one end of a first spiral stirring shaft, which is far away from a second spiral stirring shaft, is connected with the extrusion plate, a material guide hose is connected on the extrusion plate at one side of the electric telescopic rod, graduated scales corresponding to scales are arranged at the corresponding positions of the first spiral stirring shaft and the second spiral stirring shaft, the graduated scales are in a preassembly mode, the inner area of the mixing cylinder is s = long/wide, the inner area of the mixing cylinder is larger than that of the second spiral stirring shaft, the first spiral stirring shaft occupies a smaller area of the mixing cylinder, the depth of the graduated scale at the position corresponding to the first spiral stirring shaft is shorter than that of the graduated scale at the position corresponding to the second spiral stirring shaft, (1) when the discharge amount needs to be accurately evaluated, for example, when the photosensitive resin liquid that needs 10cm to dry up, can control electric telescopic handle through the controller and work to promote the stripper plate and remove to mixing barrel top, move the stripper plate to the 10cm position of cultivating that the scale shows, thereby ensure that mixing barrel inside can only store the capacity of 10cm of cultivating, be convenient for freely control how much of feed volume, prevent extravagant; (2) after photosensitive resin liquid carries out mixing barrel inside, thereby working through electric telescopic handle, make the stripper plate extrude to mixing barrel top, for mixing barrel inside provides a pressure, thereby make photosensitive resin liquid carry out first printing pen head inside through the guide hose, until stripper plate and mixing barrel top mutual contact, thereby ensure to extrude mixing barrel inside photosensitive resin liquid completely, be convenient for extrude mixing barrel's photosensitive resin liquid completely, prevent that mixing barrel from causing the residue, extravagant material.

5. The 3d printing pen is characterized in that a second printing pen head and a third printing pen head are sequentially sleeved at the bottom of a first printing pen head, clamping grooves are formed in the two sides of the bottoms of the first printing pen head and the second printing pen head, clamping blocks matched with the clamping grooves are arranged on the two sides of the tops of the second printing pen head and the third printing pen head, a third magnet is arranged inside each clamping block, a fourth magnet matched with the third magnet is arranged inside the first printing pen head at the position of the clamping groove, the clamping blocks on the two sides of the top of the third magnet can be matched with the clamping grooves in the bottom of the first printing pen head to be clamped in a matching mode in the sleeving process of the second printing pen head and the third printing pen head, meanwhile, the second printing pen is prevented from falling off due to the mutual matching between the third magnet and the fourth magnet, the third printing pen head is the same as the steps, and the printing pen heads can be conveniently replaced, the printing pen point is not required to be detached, so that time is saved, and the caliber of the printing pen point can be adjusted more conveniently.

In conclusion, in the rotation process to the gear, thereby pulling rack and accuse flitch and carry out the feeding, because the accuse flitch sets up to the cavity form, correspond each other through first scale mark and second scale mark simultaneously, thereby ensure the proportion of every inlet pipe photosensitive resin liquid, ensure the purity of required colour, modulate according to how much of required amount simultaneously, can stir photosensitive resin liquid through second screw type (mixing) shaft and first screw type (mixing) shaft on the one hand at the extruded in-process, on the other hand provides a pressure for photosensitive resin liquid, until stripper plate and mixing barrel top mutual contact, conveniently discharge photosensitive resin liquid completely, conveniently adjust the size of printing nib internal bore diameter simultaneously, need not to dismantle, high durability and convenient use.

Drawings

FIG. 1 is a schematic view of the overall internal structure of the present invention;

FIG. 2 is a schematic view of the interior of the mixing bowl according to the present invention;

FIG. 3 is a schematic view of the internal structure of the printing pen head according to the present invention;

FIG. 4 is a schematic view of the feed pipe of the present invention;

FIG. 5 is a schematic top view of the rack of the present invention;

FIG. 6 is a schematic view of the internal structure of the gear of the present invention.

In the figure: 1. a first printing pen head; 2. an electric telescopic rod; 3. a controller; 4. a print pen body; 5. rotating the handle; 6. a liquid material tank; 7. a self-locking groove; 8. a feed pipe; 9. a mixing barrel; 10. a material guiding hose; 11. a storage battery; 12. a light curing light source; 13. a graduated scale; 14. a first magnet; 15. a first helical stirring shaft; 16. connecting grooves; 17. a second helical stirring shaft; 18. a second magnet; 19. a clamping block; 20. a third magnet; 21. a second printing pen head; 22. a fourth magnet; 23. a card slot; 24. a third printing pen head; 25. a rack; 26. a gear; 27. a rotating shaft; 28. a material control box; 29. a material control plate; 30. a first scale mark; 31. a second scale mark; 32. a slider; 33. a chute; 34. a self-locking block; 35. a limiting groove; 36. a limiting block; 37. a pressing plate; 38. and (4) electrically extruding the cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: a3 d printing pen comprises a first printing pen head 1, a printing pen body 4, a feeding pipe 8 and a mixing barrel 9, wherein the feeding pipe 8 is a four-way pipe and is arranged inside the printing pen body 4, three end parts of the feeding pipe 8 all extend to the top of the printing pen body 4, the tops of the printing pen bodies 4 at the positions of the three feeding pipes 8 are all connected with a liquid material tank 6, an electric extrusion cylinder 38 is inserted at the top of the liquid material tank 6, internal threads are arranged at the top end inside the feeding pipe 8, external threads matched with the internal threads of the feeding pipe 8 are arranged at one end of the liquid material tank 6, one end, far away from the liquid material tank 6, of the feeding pipe 8 is connected with the mixing barrel 9, material control boxes 28 are fixed at the middle positions of one sides of the three feeding pipes 8 extending to the top of the printing pen body 4, sliding chutes 33 are arranged at two sides inside the material control boxes 28, and hollow material control plates 29 are arranged inside the material, and both sides of the material control plate 29 are provided with slide blocks 32 mutually matched with the slide grooves 33, one side of the top of the material control plate 29 is uniformly provided with second scale marks 31, one end of the material control plate 29 is connected with a rack 25, one end of the rack 25 far away from the material control plate 29 penetrates through the material inlet pipe 8 and extends into the printing pen body 4, the top of the rack 25 is provided with first scale marks 30 mutually corresponding to the second scale marks 31, the inside of the printing pen body 4 far away from one side of the material control box 28 of the material inlet pipe 8 is provided with a gear 26 mutually matched with the rack 25, one side of the inside of the gear 26 is provided with a limit groove 35, the inside of the gear 26 is inserted with a rotating shaft 27, one side of the rotating shaft 27 is provided with a limit block 36 mutually matched with the limit groove 35, one end of the rotating shaft 27 extends to the outer side of the printing pen body 4 and is connected with a rotating handle 5, the inside of the print pen body 4 at the position of the self-locking block 34 is provided with a self-locking groove 7 which is matched with the self-locking block 34, the top of the mixing cylinder 9 is welded with a connecting groove 16, the top of the mixing cylinder 9 is provided with a thread groove which is matched with the external thread of the second spiral stirring shaft 17, the diameter of one end of the second spiral stirring shaft 17 is larger than that of the thread groove at the top of the mixing cylinder 9, the top end of the inside of the mixing cylinder 9 is provided with the second spiral stirring shaft 17, one end of the second spiral stirring shaft 17 extends to the inside of the connecting groove 16, the inner wall of the second spiral stirring shaft 17, which is far away from one end of the connecting groove 16, of the second spiral stirring shaft 17 is provided with a second magnet 18, the inside of the second spiral stirring shaft 17 is provided with a first spiral stirring shaft 15, the length of the hollow part inside of the second spiral stirring shaft 17 and, and the end of the first spiral stirring shaft 15 extending to the interior of the second spiral stirring shaft 17 is provided with a first magnet 14 which is matched with a second magnet 18, the bottom of the mixing cylinder 9 is welded with an electric telescopic rod 2, the output end of the electric telescopic rod 2 extends to the interior of the mixing cylinder 9 and is connected with an extrusion plate 37, the end of the first spiral stirring shaft 15 far away from the second spiral stirring shaft 17 is connected with the extrusion plate 37, the extrusion plate 37 at one side of the electric telescopic rod 2 is connected with a material guiding hose 10, one end of the hose 10 close to the extrusion plate 37 is provided with a control valve, one side of the mixing cylinder 9 is uniformly provided with a scale 13 which corresponds to the first spiral stirring shaft 15 and the second spiral stirring shaft 17, one end of the material guiding hose 10 far away from the mixing cylinder 9 extends to the bottom of the printing pen body 4 and is connected with a first printing pen point 1, and the bottom of the printing pen body 4 outside the first printing pen point 1 is provided with a light curing light source 12, the bottom of the first printing pen head 1 is sequentially sleeved with a second printing pen head 21 and a third printing pen head 24, the two sides of the bottoms of the first printing pen head 1 and the second printing pen head 21 are both provided with a clamping groove 23, the two sides of the tops of the second printing pen head 21 and the third printing pen head 24 are both provided with a clamping block 19 which is matched with the clamping groove 23, the inside of the fixture block 19 is provided with a third magnet 20, the inside of the first printing pen head 1 at the position of the clamping groove 23 is provided with a fourth magnet 22 matched with the third magnet 20, the pore diameters of the first printing pen head 1, the second printing pen head 21 and the third printing pen head 24 are distributed in a descending trend, the inside of the printing pen body 4 at the two sides of the first printing pen head 1 is provided with a storage battery 11, one side of the printing pen body 4 is provided with a controller 3, and the controller 3 is electrically connected with the electric telescopic rod 2, the storage battery 11 and the light curing light source 12.

The working principle is as follows: firstly, the liquid material tank 6 with three primary colors is connected with the feeding pipes 8 through the matching of threads, so that three different colors of red, yellow and blue are respectively carried out inside three pipelines at the top of the four-way pipe feeding pipe 8, then the photosensitive resin liquid of the liquid material tank 6 is squeezed into the mixing barrel 9 through the electric squeezing cylinder 38, for example, when the three primary colors are required to be used for color mixing, the gear 26 is driven to rotate through rotating the handle 5 in positive rotation, so that the rack 25 is driven to move towards the outer side of the feeding pipe 8, as the first scale line 30 at the top of the rack 25 corresponds to the second scale line 31 at the top of the material plate 29 inside the material control box 28, the material control plate 29 is pulled to move towards the inside of the feeding pipes 8, the discharging proportion of each feeding pipe 8 is controlled, and the proportion of the three primary colors is ensured to be 1: 1, it is spacing to mutually support through slider 32 and spout 33 simultaneously, thereby prevent to pull out accuse flitch 29 from controlling inside the magazine 28 completely, after the proportion calibration, through promoting stopper 36 on the pivot 27 to print pen body 4 inside along spacing groove 35, thereby extend from locking piece 34 to self-locking inside auto-lock groove 7, prevent that gear 26 from removing, influence the accuracy of proportion, when needing to evaluate the discharge amount accurately, for example when the photosensitive resin liquid that needs 10cm year, can control electric telescopic handle 2 through controller 3 and carry out work, thereby promote stripper plate 37 and move to compounding section of thick bamboo 9 top, move stripper plate 37 to the 10cm year position that scale 13 shows, thereby control the volume of material, when photosensitive resin liquid reaches 10cm year, promote accuse flitch 29 to controlling inside the magazine 28 through the cooperation of gear 26 with rack 25 through reversal rotation handle 5, prevent through rack 25 that the tricolor from continuing to get into mixing barrel 9 inside, then extend to self-locking groove 7 inside through self-locking piece 34 and carry out the auto-lock, carry out mixing barrel 9 inside back when photosensitive resin liquid, thereby control electric telescopic handle 2 through controller 3 and work, make stripper 37 extrude to mixing barrel 9 top, photosensitive resin liquid carries out first printing pen head 1 inside through guide hose 10 simultaneously, in the in-process that gets into first printing pen head 1 inside, thereby can also drive second helical stirring shaft 17 through mutually supporting of second helical stirring shaft 17 and mixing barrel 9 top thread groove and rotate, stir and mix photosensitive resin liquid, thereby drive second helical stirring shaft 17 and move to spread groove 16 inside, when second helical stirring shaft 17 and spread groove 16 top mutual contact, thereby mutually supporting through electric telescopic handle through the inner wall of second helical stirring shaft 17 and first helical stirring shaft 15 2 pushing the first spiral stirring shaft 15 to move towards the inside of the second spiral stirring shaft 17, so as to stir and mix the photosensitive resin liquid for the second time until the extrusion plate 37 and the top of the mixing barrel 9 are contacted with each other, after the photosensitive resin liquid in the mixing barrel 9 is completely used, pulling the extrusion plate 37 to move towards the bottom of the mixing barrel 9 through the electric telescopic rod 2, so as to reset the second spiral stirring shaft 17 and the first spiral stirring shaft 15, and simultaneously, the external thread on the top of the second spiral stirring shaft 17 is larger than the thread groove on the top of the mixing barrel 9, so as to prevent the second spiral stirring shaft 17 from falling off in the rotation process, and the second magnet 18 in the second spiral stirring shaft 17 is matched with the first magnet 14 in the first spiral stirring shaft 15, so as to prevent the first spiral stirring shaft 15 from falling off from the inside of the second spiral stirring shaft 17 in the rotation process, after the photosensitive resin liquid enters the inside of the first printing pen head 1, 3d printing is performed by the first printing pen head 1, during the printing process, the sizes of the calibers can be adjusted through the second printing pen point 21 and the third printing pen point 24 with different calibers, in the process of sleeving the second printing pen head 21 and the third printing pen head 24, the clamping blocks 19 on the two sides of the top of the third magnet 20 and the clamping grooves 23 at the bottom of the first printing pen head 1 can be matched with each other for clamping, at the same time, the second pen point 21 is prevented from falling off by the cooperation between the third magnet 20 and the fourth magnet 22, and the third pen point 24 is the same as the above steps, the photosensitive resin liquid is rapidly cured by being simultaneously irradiated with light from the light-curing light source 12 during printing, during use of the printer pen body 4, the battery 11 inside the printer pen body 4 provides power support for the device.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a 3d print pen, includes first print pen head (1), print pen body (4), inlet pipe (8) and mixing cylinder (9), its characterized in that: the printing pen comprises a printing pen body (4), wherein a four-way pipe feeding pipe (8) is arranged inside the printing pen body (4), three end parts of the feeding pipe (8) all extend to the top of the printing pen body (4), the top of the printing pen body (4) at the positions of the three feeding pipes (8) is connected with a liquid material tank (6), an electric extrusion cylinder (38) is inserted into the top of the liquid material tank (6), one end, far away from the liquid material tank (6), of each feeding pipe (8) extends to the side face of a material mixing cylinder (9) and is communicated with the material mixing cylinder (9), material control boxes (28) are fixed at middle positions of one side of the top feeding pipe (8) of the printing pen body (4), sliding grooves (33) are arranged on two sides of the inner part of each material control box (28), a hollow material control plate (29) is arranged inside each material control box (28), and sliding blocks (32) matched with the sliding grooves (33) are arranged on two sides of each material control plate (29), second scale marks (31) are uniformly arranged on one side of the top of the material control plate (29), one end of the material control plate (29) is connected with a rack (25), one end, far away from the material control plate (29), of the rack (25) penetrates through the feeding pipe (8) and extends into the printing pen body (4), first scale marks (30) corresponding to the second scale marks (31) are arranged on the top of the rack (25), a gear (26) matched with the rack (25) is arranged inside the printing pen body (4) on one side, far away from the material control box (28), of the feeding pipe (8), a limiting groove (35) is formed in one side of the inside of the gear (26), a rotating shaft (27) penetrates through the inside of the gear (26), a limiting block (36) matched with the limiting groove (35) is arranged on one side of the rotating shaft (27), one end of the rotating shaft (27) extends to the outer side of the printing pen body (4) and is connected with a rotating handle (5), the automatic locking device is characterized in that a self-locking block (34) is arranged at one end, far away from a rotating handle (5), of the rotating shaft (27), a self-locking groove (7) matched with the self-locking block (34) is formed in the printing pen body (4) at the position of the self-locking block (34), a connecting groove (16) is welded at the top of the mixing barrel (9), a second spiral stirring shaft (17) is arranged at the top end of the inside of the mixing barrel (9), one end of the second spiral stirring shaft (17) extends to the inside of the connecting groove (16), a second magnet (18) is arranged on the inner wall, far away from one end of the connecting groove (16), of the second spiral stirring shaft (17), a first spiral stirring shaft (15) is arranged inside the second spiral stirring shaft (17), and a first magnet (14) matched with the second magnet (18) is arranged at one end, far away from the inside of the second spiral stirring shaft (17), of the first spiral stirring shaft (15), the bottom of the mixing cylinder (9) is welded with an electric telescopic rod (2), the output end of the electric telescopic rod (2) extends into the mixing cylinder (9) and is connected with an extrusion plate (37), one end of a first spiral stirring shaft (15), which is far away from a second spiral stirring shaft (17), is connected with the extrusion plate (37), a material guide hose (10) is connected onto the extrusion plate (37) on one side of the electric telescopic rod (2), one side of the mixing cylinder (9) is uniformly provided with a scale (13) which corresponds to the first spiral stirring shaft (15) and the second spiral stirring shaft (17), one end of the material guide hose (10), which is far away from the mixing cylinder (9), extends to the bottom of the printing pen body (4) and is connected with a first printing pen head (1), and the bottom of the printing pen body (4) outside the first printing pen head (1) is provided with a photocuring light source (12), the bottom of first printing pen head (1) has cup jointed second printing pen head (21) and third printing pen head (24) in proper order, the both sides of first printing pen head (1) and second printing pen head (21) bottom all are provided with draw-in groove (23), the both sides at second printing pen head (21) and third printing pen head (24) top all are provided with fixture block (19) of mutually supporting with draw-in groove (23), and the inside of fixture block (19) all is provided with third magnet (20), the inside of first printing pen head (1) of draw-in groove (23) position department is provided with fourth magnet (22) of mutually supporting with third magnet (20), the inside battery (11) that all is provided with of printing pen body (4) of first printing pen head (1) both sides, controller (3) are installed to one side of printing pen body (4), and controller (3) and electric telescopic handle (2), The storage battery (11) and the light curing light source (12) are electrically connected; the aperture of the first printing pen head (1), the aperture of the second printing pen head (21) and the aperture of the third printing pen head (24) are distributed in a descending trend; a thread groove matched with the external thread of the second spiral stirring shaft (17) is formed in the top of the mixing cylinder (9), and the diameter of one end of the second spiral stirring shaft (17) is larger than that of the thread groove in the top of the mixing cylinder (9); one end of the hose (10) close to the extrusion plate (37) is provided with a control valve; the top end of the inside of the feeding pipe (8) is provided with internal threads, and one end of the liquid material tank (6) is provided with external threads matched with the internal threads of the feeding pipe (8); the length of the first spiral stirring shaft (15), the length of the hollow part in the second spiral stirring shaft (17) and the thickness of the top of the mixing barrel (9) at the height in the connecting groove (16) are equal.