CN111823587A

CN111823587A - 3D printer head

Info

Publication number: CN111823587A
Application number: CN202010725840.XA
Authority: CN
Inventors: 耿惠贞; 陈浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-10-27

Abstract

The invention relates to the technical field of 3D printing, in particular to a 3D printer head, which comprises a material conveying pipe, wherein the lower end of the material conveying pipe is provided with a spray head mechanism, the upper end of the spray head mechanism is provided with a heating mechanism, the upper end of the heating mechanism is provided with a heat dissipation mechanism, the upper end of the heat dissipation mechanism is provided with a feeding mechanism, the screw thread surface is in threaded connection with a screw thread ring, a spring pushes a fixing piece to move, the fixing piece drives a sealing sleeve to be clamped in a conical groove, so that the spray head is tightly connected with the material conveying pipe, when a gap is generated between the spray head and the material conveying pipe due to the looseness of the screw thread ring and the screw thread surface, the spring pushes the fixing piece to move again, the fixing piece drives the sealing sleeve to be tightly clamped in the conical groove again, so that materials are prevented from permeating into the, the spray head is prevented from being fixed and inconvenient to detach.

Description

3D printer head

Technical Field

The invention relates to the technical field of 3D printing, in particular to a 3D printer head.

Background

3D printing, which is a technique of constructing an object by using an adhesive material such as powdered metal or plastic and by using a digital model file as a basis and by using an adhesive material such as powdered metal or plastic and by printing layer by layer, is a technique of 3D printing, which is generally implemented by using a digital technical material printer, is usually used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and then is gradually used for directly manufacturing some products, and there are already parts printed by using this technique.

The existing 3D printer sprays materials to form objects through a spray head, the materials are heated into paste through a heating device in a machine head, then the paste materials are sprayed out through the spray head, the requirements of different objects are met, the thickness of the sprayed materials is changed, the size of the spray hole is controlled by changing the spray head, the thickness of the sprayed materials is changed, but when the printer is used for a long time, the joint of the spray head and a material conveying pipe is loosened to generate gaps, so that the paste materials enter the gaps, and the spray head is fixed and is inconvenient to disassemble,

disclosure of Invention

The invention provides a 3D printer head, and aims to solve the problems that a 3D printer in the prior art sprays a material through a spray head to form an object, the material is heated into paste through a heating device in the printer head, then the paste material is sprayed through the spray head, the requirements of different objects are met, and the thickness of the sprayed material is changed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a 3D printer head, includes the conveying pipeline, the lower extreme of conveying pipeline is provided with shower nozzle mechanism, the upper end of shower nozzle mechanism is provided with heating mechanism, heating mechanism's upper end is provided with heat dissipation mechanism, heat dissipation mechanism's upper end is provided with feed mechanism.

Specifically, the nozzle mechanism comprises a threaded surface, a threaded ring, a nozzle, a material conveying hole, spray holes, a sealing sleeve, fixing pieces, chutes, springs, a conical surface and a conical groove, wherein the threaded surface is arranged on the outer wall of the lower end of the material conveying pipe, the threaded surface is in threaded connection with the inside of the threaded ring, the lower end of the threaded ring is fixedly connected with the nozzle, the material conveying hole is formed in the nozzle, the spray holes are formed in the lower end of the material conveying hole, the sealing sleeve is movably sleeved on the inner wall of the upper end of the material conveying hole, the fixing pieces are symmetrically and fixedly connected on the outer wall of the sealing sleeve, the two fixing pieces are respectively in sliding connection with the inside of the matched chutes, the springs are fixedly connected on the lower surfaces of the two fixing pieces, the lower ends of the two springs are respectively and fixedly connected on the side walls of the lower ends, the conical groove is formed in the inner wall of the lower end of the material conveying pipe.

Concretely, heating mechanism includes ring channel, semicircular heater, semicircle sleeve, semicircle snap ring, slot, solid fixed ring, rubber ring, the ring channel is seted up on the outer wall of conveying pipeline, the inside joint of ring channel has two corresponding semicircle heaters, cup jointed two corresponding semicircle sleeves on the outer wall of conveying pipeline, two semicircle heater joint is inside two semicircle sleeves, two all fixed semicircle snap rings that have cup jointed on the outer wall of semicircle sleeve's upper end, the top of semicircle sleeve is pegged graft inside the slot, the slot is seted up on solid fixed ring's lower surface, gu fixed ring fixes the cup joint on the outer wall of conveying pipeline, the inside fixed cup joint of slot has the rubber ring, semicircle snap ring joint is on the inner wall of rubber ring.

Specifically, heat dissipation mechanism includes a heat dissipation section of thick bamboo, fin, apical ring, drum, round hole, fan, the fixed cup joint of a heat dissipation section of thick bamboo is on the surface of conveying pipeline, a plurality of fins of fixedly connected with on the surface of a heat dissipation section of thick bamboo, the lower extreme fixed connection of a heat dissipation section of thick bamboo is on solid fixed ring's upper surface, the upper end fixedly connected with apical ring of a heat dissipation section of thick bamboo, the lower fixed surface in the apical ring outside is connected with the drum, two round holes have been seted up to the symmetry on the surface of drum, the equal fixedly connected with fan in inside of round hole.

Specifically, the feeding mechanism comprises a fixed block, a feeding hole, motors, rotating rods, rotating holes, bearings, rotary discs, clamping strips and rotating grooves, wherein the fixed block is fixedly connected to the upper surface of the top ring, the feeding hole is formed in the fixed block, the feeding hole is movably sleeved on the upper end surface of the conveying pipe, two motors are fixedly connected to the side wall of the fixed block, the output ends of the two motors are fixedly connected with the rotating rods, the two rotating rods are respectively inserted into the two rotating holes, the other ends of the two rotating holes are communicated with the two rotating grooves, the two rotating grooves are symmetrically formed in the inner wall of the feeding hole, one ends of the two rotating rods, far away from the motors, are rotatably connected to the inner wall of the rotating groove through the bearings, the surfaces of the ends of the two rotating rods, located in the rotating grooves, are fixedly sleeved with the rotary discs, and the surfaces of the two rotary discs are fixedly connected with the clamping strips at equal intervals,

specifically, the threaded ring is in close contact with the semicircular sleeve.

Specifically, the two semicircular heaters are correspondingly spliced into a circular ring.

Specifically, the two fans are arranged in the same direction.

Specifically, the distance between the two rotating discs is the same as the diameter of the material.

The invention has the beneficial effects that:

(1) according to the 3D printer head, the threaded surface is in threaded connection with the threaded ring, the spring pushes the fixing piece to move, the fixing piece drives the sealing sleeve to be clamped inside the conical groove, the sprayer is tightly connected with the conveying pipe, when the threaded ring is loosened with the threaded surface, and a gap is generated between the sprayer and the conveying pipe, the spring pushes the fixing piece to move again, the fixing piece drives the sealing sleeve to be tightly clamped inside the conical groove again, so that materials are prevented from permeating into the gap, the sprayer and the conveying pipe are prevented from being stuck by the materials, the sprayer is prevented from being incapable of being taken down when the sprayer is replaced, and the sprayer is prevented from being fixed and inconvenient to disassemble.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a 3D printer head according to the present invention;

fig. 2 is a schematic side view of a 3D printer head according to the present invention;

FIG. 3 is a top view of a feeding mechanism of a 3D printer head according to the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 1 of a 3D printer head provided in accordance with the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 1 of a 3D printer head according to the present invention;

fig. 6 is a top view of a heat dissipation mechanism of a 3D printer head according to the present invention;

fig. 7 is a cross-sectional view of a heating mechanism of a 3D printer head according to the present invention.

In the figure: 1. a delivery pipe; 2. a nozzle mechanism; 21. a thread face; 22. a threaded ring; 23. a spray head; 24. a delivery hole; 25. spraying a hole; 26. a sealing sleeve; 27. a fixing sheet; 28. a chute; 29. a spring; 210. a conical surface; 211. a conical groove; 3. a heating mechanism; 31. an annular groove; 32. a semicircular heater; 33. a semicircular sleeve; 34. a semicircular snap ring; 35. a slot; 36. a fixing ring; 37. a rubber ring; 4. a heat dissipation mechanism; 41. a heat-dissipating cylinder; 42. a heat sink; 43. a top ring; 44. a cylinder; 45. a circular hole; 46. a fan; 5. a feeding mechanism; 51. a fixed block; 52. a feed port; 53. a motor; 54. a rotating rod; 55. hole turning; 56. a bearing; 57. a turntable; 58. a clamping strip; 59. and (6) rotating the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the 3D printer head according to the present invention includes a material conveying pipe 1, a nozzle mechanism 2 is disposed at a lower end of the material conveying pipe 1, a heating mechanism 3 is disposed at an upper end of the nozzle mechanism 2, a heat dissipation mechanism 4 is disposed at an upper end of the heating mechanism 3, and a feeding mechanism 5 is disposed at an upper end of the heat dissipation mechanism 4.

Specifically, the nozzle mechanism 2 includes a threaded surface 21, a threaded ring 22, a nozzle 23, a material delivery hole 24, a nozzle hole 25, a sealing sleeve 26, a fixing plate 27, a sliding groove 28, a spring 29, a conical surface 210, and a conical groove 211, wherein the threaded surface 21 is disposed on the outer wall of the lower end of the material delivery pipe 1, the threaded surface 21 is screwed inside the threaded ring 22, the lower end of the threaded ring 22 is fixedly connected with the nozzle 23, the inside of the nozzle 23 is provided with the material delivery hole 24, the lower end of the material delivery hole 24 is provided with the nozzle hole 25, the inner wall of the upper end of the material delivery hole 24 is movably sleeved with the sealing sleeve 26, the outer wall of the sealing sleeve 26 is symmetrically and fixedly connected with the fixing plate 27, the two fixing plates 27 are respectively slidably connected inside the matched sliding grooves 28, the lower surfaces of the two fixing plates 27 are fixedly connected with the spring 29, the lower ends, the conical surface 210 is clamped in the conical groove 211, and the conical groove 211 is arranged on the inner wall of the lower end of the material conveying pipe 1.

Specifically, the heating mechanism 3 includes an annular groove 31, semicircular heaters 32, semicircular sleeves 33, semicircular snap rings 34, slots 35, fixing rings 36 and rubber rings 37, the annular groove 31 is arranged on the outer wall of the conveying pipe 1, two corresponding semicircular heaters 32 are clamped inside the annular groove 31, two corresponding semicircular sleeves 33 are sleeved on the outer wall of the conveying pipe 1, the two semicircular heaters 32 are clamped inside the two semicircular sleeves 33, the semicircular snap rings 34 are fixedly sleeved on the outer walls of the upper ends of the two semicircular sleeves 33, the top ends of the semicircular sleeves 33 are inserted inside the slots 35, the slots 35 are arranged on the lower surface of the fixing rings 36, the fixing rings 36 are fixedly sleeved on the outer wall of the conveying pipe 1, the rubber rings 37 are fixedly sleeved inside the slots 35, the semicircular snap rings 34 are clamped on the inner walls of the rubber rings 37, when the material moves between the annular grooves 31, starting the two semicircular heaters 32, heating the material in the material conveying pipe 1 by the heat emitted by the semicircular heaters 32, further melting the material, inputting the melted material into the material conveying hole 24 through the sealing sleeve 26, finally spraying the material through the spray hole 25, when the spray head 23 needs to be replaced and the diameter of the spray hole 25 needs to be changed, rotating the threaded ring 22 to separate the threaded ring 22 from the surface of the threaded surface 21, then rotating the required spray head 23 to drive the threaded ring 22 on the spray head 23 to be in threaded connection with the surface of the threaded surface 21, simultaneously pushing the fixing piece 27 to move upwards through the spring 29, driving the sealing sleeve 26 to move upwards through the fixing piece 27, further clamping the conical surface 210 in the matched conical groove 211, communicating the material conveying pipe 1 with the material conveying hole 24 through the sealing sleeve 26, and generating a gap between the spray head 25 and the material conveying pipe 1 due to the looseness of the threaded ring 22 and the threaded surface 21 after long-, spring 29 promotes stationary blade 27 once more and removes, and stationary blade 27 drives the inseparable joint of sealed sleeve 26 once more inside tapered slot 211, and then prevents inside the gap between conveying pipeline 1 and the shower nozzle 25 of material infiltration, prevents that the material from gluing shower nozzle 25 and conveying pipeline 1 after solidifying, and then prevents to take off shower nozzle 23 when changing shower nozzle 23, prevents that shower nozzle 23 from being fixed inconvenient dismantlement.

Specifically, the heat dissipation mechanism 4 includes a heat dissipation cylinder 41, heat dissipation fins 42, a top ring 43, a cylinder 44, a circular hole 45, and a fan 46, wherein the heat dissipation cylinder 41 is fixedly sleeved on the surface of the material delivery pipe 1, the outer surface of the heat dissipation cylinder 41 is fixedly connected with a plurality of heat dissipation fins 42, the lower end of the heat dissipation cylinder 41 is fixedly connected to the upper surface of the fixing ring 36, the upper end of the heat dissipation cylinder 41 is fixedly connected with the top ring 43, the lower surface of the outer side of the top ring 43 is fixedly connected with the cylinder 44, the surface of the cylinder 44 is symmetrically provided with two circular holes 45, the inside of the circular hole 45 is fixedly connected with the fan 46, when the semicircular heater 32 heats the material, the temperature is transferred upwards, the material at the upper end is softened due to the higher temperature, further, the two turntables 57 can not drive the softened material to move downwards, the heat received by the material delivery pipe 1 is absorbed by the heat dissipation cylinder 41, and starting the two fans 46, wherein one fan 46 extracts hot air in the cylinder 44, and the other fan 46 extracts outside normal-temperature air to enter the cylinder 44, so that the temperature of the delivery pipe 1 at the upper end of the semicircular heater 32 is lower, and the material is prevented from being softened by high temperature.

Specifically, the feeding mechanism 5 comprises a fixed block 51, a feeding hole 52, motors 53, rotating rods 54, rotating holes 55, bearings 56, turntables 57, clamping strips 58 and rotating grooves 59, the fixed block 51 is fixedly connected to the upper surface of the top ring 43, the feeding hole 52 is formed in the fixed block 51, the feeding hole 52 is movably sleeved on the upper end surface of the conveying pipeline 1, the two motors 53 are fixedly connected to the side wall of the fixed block 51, the rotating rods 54 are fixedly connected to the output ends of the two motors 53, the two rotating rods 54 are respectively inserted into the two rotating holes 55, the other ends of the two rotating holes 55 are communicated with the two rotating grooves 59, the two rotating grooves 59 are symmetrically formed on the inner wall of the feeding hole 52, one ends of the two rotating rods 54, which are far away from the motors 53, are rotatably connected to the inner wall of the rotating groove 59 through the bearings 56, the turntables 57 are fixedly sleeved on the surfaces of the ends of the two rotating rods 54, which are, the material of rod form is inserted into feed port 52 by a plurality of joint strips 58 with equal distance fixedly connected with on the surface of two turntables 57, so that the material is located between two turntables 57 and is inserted into the inside of conveying pipe 1 at last, then motor 53 is started, motor 53 drives rotating rod 54 to rotate, rotating rod 54 drives turntables 57 to rotate, and material is extruded through joint strips 58 on the surface when turntables 57 rotate, and then the material is driven to continuously enter into conveying pipe 1.

Specifically, the threaded ring 22 is in close contact with the semicircular sleeve 33, and the semicircular sleeve 33 is pushed by the threaded ring 22 to be clamped inside the rubber ring 37.

Specifically, two semicircular heaters 32 are correspondingly spliced to form a ring, so that the semicircular heaters 32 are convenient to replace.

Specifically, the two fans 46 are arranged in the same direction, one of the two fans 46 extracts hot air in the cylinder 44, and the other fan extracts outside normal temperature air to enter the cylinder 44.

Specifically, the distance between the two rotating discs 57 is the same as the diameter of the material, so that the material is extruded by the clamping strips 58 on the surface when the rotating discs 57 rotate, and then the material is driven to continuously enter the conveying pipe 1.

When the material feeding device is used, firstly, a rod-shaped material is inserted into the feeding hole 52, the material is positioned between the two turntables 57 and is finally inserted into the conveying pipe 1, then the motor 53 is started, the motor 53 drives the rotating rod 54 to rotate, the rotating rod 54 drives the turntables 57 to rotate, the material is extruded through the clamping strips 58 on the surface when the turntables 57 rotate, the material is further driven to continuously enter the conveying pipe 1, when the material moves to be positioned between the annular grooves 31, the two semicircular heaters 32 are started, the material in the conveying pipe 1 is heated through the heat emitted by the semicircular heaters 32, the material is further melted, the melted material is input into the conveying hole 24 through the sealing sleeve 26, finally the material is sprayed out through the spray holes 25, when the spray head 23 needs to be replaced to change the diameter of the spray holes 25, the threaded ring 22 is separated from the surface of the threaded surface 21 by rotating the threaded ring 22, then, the screw ring 22 on the nozzle 23 is driven to be in threaded connection with the surface of the threaded surface 21, meanwhile, the spring 29 is used for pushing the fixing piece 27 to move upwards, the fixing piece 27 is used for driving the sealing sleeve 26 to move upwards, so that the conical surface 210 is clamped inside the matched conical groove 211, the conveying pipe 1 is communicated with the conveying hole 24 through the sealing sleeve 26, after long-term use, the screw ring 22 and the threaded surface 21 are loosened to generate a gap between the nozzle 25 and the conveying pipe 1, the spring 29 is used for pushing the fixing piece 27 to move again, the fixing piece 27 is used for driving the sealing sleeve 26 to be tightly clamped inside the conical groove 211 again, so that materials are prevented from permeating into the gap between the conveying pipe 1 and the nozzle 25, the nozzle 25 and the conveying pipe 1 are prevented from being stuck after the materials are solidified, the nozzle 23 cannot be taken down when being replaced, the nozzle 23 is prevented from being fixed and inconvenient to be detached, and meanwhile, when the semicircular heater 32, the temperature can upwards transmit, the material at the upper end can be softened due to the higher temperature, and then the softened material can not be driven to move downwards by 57 of the two turntables, the heat received by the material conveying pipe 1 is absorbed by the heat radiating cylinder 41, the heat inside the heat radiating cylinder 41 is discharged into the cylinder 44 through the heat radiating fins 42, the two fans 46 are started, one fan 46 extracts hot air inside the cylinder 44, the other fan extracts outside normal-temperature air to enter the cylinder 44, and then the temperature of the material conveying pipe 1 at the upper end of the semicircular heater 32 is lower, so that the material softened due to the high temperature is prevented.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a 3D printer head which characterized in that: the device is characterized by comprising a conveying pipe (1), wherein a spray head mechanism (2) is arranged at the lower end of the conveying pipe (1), a heating mechanism (3) is arranged at the upper end of the spray head mechanism (2), a heat dissipation mechanism (4) is arranged at the upper end of the heating mechanism (3), and a feeding mechanism (5) is arranged at the upper end of the heat dissipation mechanism (4).

2. A 3D printer head according to claim 1, characterized in that: the spray head mechanism (2) comprises a threaded surface (21), a threaded ring (22), a spray head (23), a material conveying hole (24), spray holes (25), a sealing sleeve (26), fixing pieces (27), sliding chutes (28), springs (29), a conical surface (210) and a conical groove (211), wherein the threaded surface (21) is arranged on the outer wall of the lower end of the material conveying pipe (1), the threaded surface (21) is in threaded connection with the inside of the threaded ring (22), the lower end of the threaded ring (22) is fixedly connected with the spray head (23), the material conveying hole (24) is formed in the spray head (23), the spray holes (25) are formed in the lower end of the material conveying hole (24), the sealing sleeve (26) is movably sleeved on the inner wall of the upper end of the material conveying hole (24), the fixing pieces (27) are symmetrically and fixedly connected on the outer wall of the sealing sleeve (26), and the fixing pieces (27) are respectively in sliding connections, two fixedly connected with spring (29), two on the lower surface of stationary blade (27) the lower extreme of spring (29) is fixed connection respectively on the lower extreme lateral wall of two spout (28), conical surface (210) have been seted up to the upper end of sealing sleeve (26), conical surface (210) joint is inside awl groove (211), awl groove (211) are seted up on the lower extreme inner wall of conveying pipeline (1).

3. A 3D printer head according to claim 1, characterized in that: the heating mechanism (3) comprises an annular groove (31), semicircular heaters (32), semicircular sleeves (33), semicircular snap rings (34), slots (35), fixing rings (36) and rubber rings (37), wherein the annular groove (31) is formed in the outer wall of the conveying pipe (1), the annular groove (31) is clamped with two corresponding semicircular heaters (32), the outer wall of the conveying pipe (1) is sleeved with two corresponding semicircular sleeves (33), the two semicircular heaters (32) are clamped in the two semicircular sleeves (33), the upper outer walls of the two semicircular sleeves (33) are fixedly sleeved with the semicircular snap rings (34), the top ends of the semicircular sleeves (33) are inserted in the slots (35), the slots (35) are formed in the lower surfaces of the fixing rings (36), the fixing rings (36) are fixedly sleeved on the outer wall of the conveying pipe (1), the fixed cover in inside of slot (35) has connect rubber ring (37), semicircle snap ring (34) joint is on the inner wall of rubber ring (37).

4. A 3D printer head according to claim 1, characterized in that: radiating mechanism (4) are including heat dissipation section of thick bamboo (41), fin (42), apical ring (43), drum (44), round hole (45), fan (46), heat dissipation section of thick bamboo (41) are fixed cup joints on the surface of conveying pipeline (1), a plurality of fin (42) of fixedly connected with on the surface of heat dissipation section of thick bamboo (41), the lower extreme fixed connection of heat dissipation section of thick bamboo (41) is on the upper surface of solid fixed ring (36), the upper end fixedly connected with apical ring (43) of heat dissipation section of thick bamboo (41), the lower fixed surface in apical ring (43) outside is connected with drum (44), two round holes (45) have been seted up to the symmetry on the surface of drum (44), the equal fixedly connected with fan (46) in inside of round hole (45).

5. A 3D printer head according to claim 1, characterized in that: the feeding mechanism (5) comprises a fixed block (51), feeding holes (52), motors (53), rotating rods (54), rotating holes (55), bearings (56), a rotating disc (57), clamping strips (58) and rotating grooves (59), wherein the fixed block (51) is fixedly connected to the upper surface of the top ring (43), the feeding holes (52) are formed in the fixed block (51), the feeding holes (52) are movably sleeved on the upper end surface of the conveying pipe (1), the side wall of the fixed block (51) is fixedly connected with the two motors (53), the output ends of the two motors (53) are fixedly connected with the rotating rods (54), the two rotating rods (54) are respectively inserted into the two rotating holes (55), the other ends of the two rotating holes (55) are communicated with the two rotating grooves (59), and the two rotating grooves (59) are symmetrically formed in the inner wall of the feeding holes (52), two the one end that motor (53) were kept away from in bull stick (54) all rotates through bearing (56) and connects on the inner wall of turn trough (59), two bull stick (54) are located the one end of turn trough (59) inside and all fix the cover on the surface and have connect carousel (57), two the equal a plurality of joint strip (58) of fixedly connected with of distance on the surface of carousel (57).

6. A 3D printer head according to claim 1, characterized in that: the threaded ring (22) is in close contact with the semicircular sleeve (33).

7. A 3D printer head according to claim 1, characterized in that: the two semicircular heaters (32) are correspondingly spliced into a circular ring.

8. A 3D printer head according to claim 1, characterized in that: the two fans (46) are arranged in the same direction.

9. A 3D printer head according to claim 1, characterized in that: the distance between the two rotating discs (57) is the same as the diameter of the material.