CN219405446U

CN219405446U - Printing head heat abstractor for 3D printing engraving machine

Info

Publication number: CN219405446U
Application number: CN202223522691.0U
Authority: CN
Inventors: 史志仁
Original assignee: Henan Weiheng Technology Co ltd
Current assignee: Henan Weiheng Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-25
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of printhead heat dissipation, in particular to a printhead heat dissipation device for a 3D printing engraving machine, which comprises a printhead main body, wherein a heat dissipation structure is arranged on the outer side of the printhead main body, the heat dissipation structure comprises a shell, the shell is fixedly arranged on the outer surface of the printhead main body, a heat dissipation cavity is formed in the lower end of the inner part of the shell, a buffer groove is formed in the upper end of the inner part of the shell, an air inlet pipe is arranged at the upper end and the lower end of the right side wall of the shell, a heat conducting plate is fixedly arranged on the inner side of the heat dissipation cavity, heat dissipation fins are arranged on the surface of the heat conducting plate, cooling pipes are wound on the outer side of the heat dissipation fins, and a buffer cushion is arranged on the bottom surface of the heat dissipation cavity. The heat radiator can guide the exhausted air flow through the first guide plate and the second guide plate, so that the air flow is obliquely upwards sprayed out, the influence of air flow on the spraying of the adhesive material can be reduced, and the heat radiator is simple in structure and high in practicability.

Description

Printing head heat abstractor for 3D printing engraving machine

Technical Field

The utility model relates to the technical field of heat dissipation of printheads, in particular to a printhead heat dissipation device for a 3D printing engraving machine.

Background

A 3D printing engraving machine is one type of 3D printer, which is a machine that performs printing using additive manufacturing technology, and a 3D print head is generally provided with a heat dissipation member for dissipating heat from a heating member.

For this, chinese application number: CN202121516356.2 discloses a 3D printing head with heat dissipating component, comprising, a heating unit with a printing nozzle for ejecting printing material, a heat dissipating device arranged on the heating unit, a conveying pipe arranged on the heat dissipating device, and coaxial line between the conveying pipe and the printing nozzle, a heat insulating gasket arranged between the heating unit and the conveying pipe, the heat dissipating device comprising: the utility model discloses a heat dissipation frame and a heat dissipation block, wherein the heat dissipation frame is used for dissipating heat of a conveying pipe to keep proper temperature, and comprises a bottom plate, heat dissipation fins arranged on the bottom plate, a temperature sensor and a blowing mechanism arranged at the bottom of the heat dissipation block.

The printing head radiates heat to the conveying pipe through the fan, but the adhesive material is sprayed out from the bottom of the printing head, the blowing direction of the fan is downward, and the adhesive material which is just sprayed out is softer due to higher temperature and is easily influenced by upper side blowing to shift in position, so that the adhesive material cannot accurately reach the preset position and the printing quality of a finished product is easily influenced.

Therefore, a printhead heat dissipation device for a 3D printing engraving machine is needed to solve the above-mentioned problems.

Disclosure of Invention

In order to overcome the above-mentioned problems, an object of the present utility model is to provide a heat dissipating device for a printhead of a 3D printing engraving machine, which is capable of solving the problems that the printhead dissipates heat from a conveying pipe by a fan, but the adhesive material is ejected from the bottom of the printhead, the blowing direction of the fan is downward, and the adhesive material just ejected is soft due to higher temperature, and is easily affected by the upper side blowing to shift the position, so that the adhesive material cannot accurately reach a predetermined position, and the quality of printing of a finished product is easily affected.

The utility model adopts the following technical scheme for realizing the purposes: the utility model provides a printer head heat abstractor is used to 3D printing engraving machine, includes the printer head main part, heat radiation structure is installed in the outside of printer head main part, heat radiation structure includes the shell, shell fixed mounting is at the surface of printer head main part, the radiating cavity has been seted up to the inside lower extreme of shell, the constant flow groove has been seted up to the inside upper end of shell, the upper and lower end of shell right side wall is provided with the intake pipe, the inboard fixed mounting in radiating cavity has the heat-conducting plate.

Preferably, the surface of the heat-conducting plate is provided with radiating fins, cooling pipes are wound on the outer sides of the radiating fins, a buffer pad is arranged on the bottom surface of the radiating cavity, a ring canal is fixedly arranged on the top surface of the buffer pad, and a spray head is fixedly connected to the top surface of the ring canal.

Preferably, the top surface of heat radiation structure installs the guide structure, the guide structure includes first guide plate, the top surface welding of shell has first guide plate, the upper end welding of printing head main part surface has the second guide plate, the centre fixed mounting of first guide plate and second guide plate has the dust screen.

Preferably, the bottom end of the print head main body exposes the bottom surface of the heat dissipation structure.

Preferably, the slow flow groove is of a funnel-shaped structure, the air inlet pipe is fixedly connected with the circular pipe, and the air inlet pipe is communicated with the inside of the circular pipe.

Preferably, the cooling pipe is attached to the surface of the heat conducting plate, and two ends of the cooling pipe are exposed out of the right side wall of the shell respectively.

Preferably, the spray head is mounted obliquely.

Preferably, the first guide plate and the second guide plate are both in funnel-shaped structures, and the first guide plate is arranged on the outer side of the second guide plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the printing head is provided with the heat dissipation structure, when liquid flows in the cooling pipe, the temperature of the surface of the heat conducting plate can be taken away, the heat dissipation fins can guide out the heat in the printing head main body, the air inlet pipe is connected with the air pipe, after the air enters the annular pipe, the air is sprayed out through the spray nozzle, the air flows upwards in the heat dissipation cavity, the high temperature of the heat conducting plate, the heat dissipation fins and the surface of the cooling pipe can be taken away, the cooling of the printing head main body is realized, the shape of the slow flow groove is in a funnel shape, and the trend of the air flowing can be slowed down when the air flows in the slow flow groove;

2. the printing head is provided with the flow guide structure, air can enter between the first flow guide plate and the second flow guide plate and pass through the dust screen to be sprayed out, the air is sprayed out upwards from the upper end of the shell, the spraying direction of the air is opposite to that of the adhesive material, the influence of air flow on the spraying of the adhesive material can be reduced, and the adhesive material can be accurately paved at a preset position.

Drawings

FIG. 1 is a schematic front view of a heat dissipating structure according to the present utility model;

FIG. 2 is a schematic elevational cross-sectional view of the housing of the present utility model;

FIG. 3 is a schematic exploded view of a heat dissipating structure according to the present utility model;

FIG. 4 is a schematic exploded view of the structure of the heat-conducting plate of the present utility model;

fig. 5 is a schematic cross-sectional elevation view of the dust screen of the present utility model.

In the figure: 1. a printhead body; 2. a heat dissipation structure; 21. a housing; 22. a heat dissipation cavity; 23. a slow flow groove; 24. an air inlet pipe; 25. a heat conductive plate; 26. a heat radiation fin; 27. a cooling tube; 28. a cushion pad; 29. a grommet; 210. a spray head; 3. a flow guiding structure; 31. a first deflector; 32. a second deflector; 33. a dust-proof net.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided:

the printhead body 1, the heat conducting plate 25, the heat dissipating fins 26, the cooling pipes 27 and the nozzle 210 used in the present application are commercially available products, and the principle and the connection manner are all well known to those skilled in the art, so that they will not be described herein.

The utility model provides a printer head heat abstractor is used to 3D prints engraver, including printing head main part 1, the heat radiation structure 2 is installed in the outside of printing head main part 1, heat radiation structure 2 includes shell 21, shell 21 fixed mounting is at the surface of printing head main part 1, the radiating cavity 22 has been seted up to the inside lower extreme of shell 21, the buffer tank 23 has been seted up to the inside upper end of shell 21, the upper and lower end of shell 21 right side wall is provided with intake pipe 24, the fixed mounting of the inboard of radiating cavity 22 has heat-conducting plate 25, heat-conducting plate 25 can be with the inside high Wen Daochu of printing head main part 1, make the temperature on printing head main part 1 surface reduce.

Further, the surface of the heat conducting plate 25 is provided with the radiating fins 26, the cooling pipes 27 are wound on the outer sides of the radiating fins 26, the buffer cushion 28 is arranged on the bottom surface of the heat radiating cavity 22, the annular pipe 29 is fixedly arranged on the top surface of the buffer cushion 28, the spray head 210 is fixedly connected with the top surface of the annular pipe 29, the radiating area of the radiating fins 26 can be enlarged, liquid for cooling can flow in the cooling pipes 27, and the heat conducting plate 25 and the radiating fins 26 can be cooled.

Further, the top surface of heat radiation structure 2 installs guide structure 3, and guide structure 3 includes first guide plate 31, and the top surface welding of shell 21 has first guide plate 31, and the upper end welding of printing head main part 1 surface has second guide plate 32, and the centre fixed mounting of first guide plate 31 and second guide plate 32 has dust screen 33, and dust screen 33's setting can avoid the dust to fly to the heat dissipation intracavity 22 inside.

Further, the bottom end of the printhead body 1 exposes the bottom surface of the heat dissipation structure 2, and the heat dissipation structure 2 can cool the surface of the printhead body 1.

Further, the slow flow groove 23 is in a funnel-shaped structure, the air inlet pipe 24 is fixedly connected with the annular pipe 29, the air inlet pipe 24 is communicated with the interior of the annular pipe 29, and the inner diameter of the upper end of the slow flow groove 23 is larger than the inner diameter of the heat dissipation cavity 22, so that the air flowing trend can be slowed down when the air flows in the slow flow groove 23.

Further, the cooling tube 27 is attached to the surface of the heat conducting plate 25, both ends of the cooling tube 27 are exposed to the right side wall of the housing 21, and the cooling tube 27 can cool the heat conducting plate 25.

Further, the nozzle 210 is installed in an inclined manner, and the air sprayed from the nozzle 210 can directly blow on the surfaces of the heat conducting plate 25, the heat radiating fins 26 and the cooling pipes 27 to carry away the high temperature of the surfaces.

Further, the first deflector 31 and the second deflector 32 are both in funnel-shaped structures, the first deflector 31 is installed on the outer side of the second deflector 32, the second deflector 32 cooperates with the second deflector 32 to guide the air flow discharged from the top end of the housing 21, so that the air flow is inclined and sprayed upwards, and the influence of air flow on the spraying of the adhesive material can be reduced.

Working principle: through connecting feed liquor pipe and drain pipe respectively with the both ends of cooling tube 27, liquid can take away the temperature on heat-conducting plate 25 surface when cooling tube 27 flows in the inside, and radiating fin 26 can export the inside heat of printing head main part 1 simultaneously, put through the gas-supply pipe with intake pipe 24, after the air gets into the ring canal 29 inside, can spout through shower nozzle 210, and the air flows upwards in the heat dissipation chamber 22 inboard, can take away the high temperature on heat-conducting plate 25, radiating fin 26 and cooling tube 27 surface, realizes cooling down to printing head main part 1.

Air enters the slow flow groove 23 from the inside of the heat dissipation cavity 22, the slow flow groove 23 is in a funnel shape, when the air flows in the slow flow groove 23, the trend of air flow can be slowed down, then the air can enter between the first guide plate 31 and the second guide plate 32 and is sprayed out through the dust screen 33, the air is sprayed out upwards from the upper end of the shell 21, the spraying direction of the air is opposite to the spraying direction of the bonding material, the influence of air flow on the spraying of the bonding material can be reduced, the bonding material can be accurately paved at a preset position, the loop 29 is installed in the heat dissipation cavity 22 through the cushion pad 28, the influence of the air on the stability of the printing head main body 1 caused by vibration of the loop 29 is reduced when the air flows at the loop 29 part, and the structure is simple, and the practicability is strong.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 printer head heat abstractor for 3D prints engraver, includes printer head main part (1), its characterized in that: the utility model discloses a printer head, including printer head main part (1), printer head main part (1) is installed in the outside, heat radiation structure (2) are including shell (21), shell (21) fixed mounting is at the surface of printer head main part (1), radiating cavity (22) have been seted up to the inside lower extreme of shell (21), buffer groove (23) have been seted up to the inside upper end of shell (21), the upper and lower extreme of shell (21) right side wall is provided with intake pipe (24), the fixed mounting of the inboard in radiating cavity (22) has heat-conducting plate (25).

2. The printhead heat sink for a 3D printing engraving machine of claim 1, wherein: the surface of heat conduction board (25) is provided with fin (26), the outside winding of fin (26) has cooling tube (27), the bottom surface of heat dissipation chamber (22) is provided with blotter (28), the top surface fixed mounting of blotter (28) has ring canal (29), the top surface fixedly connected with shower nozzle (210) of ring canal (29).

3. The printhead heat sink for a 3D printing engraving machine of claim 1, wherein: the top surface of heat radiation structure (2) is installed guide structure (3), guide structure (3) are including first guide plate (31), the top surface welding of shell (21) has first guide plate (31), the upper end welding of printing head main part (1) surface has second guide plate (32), the centre fixed mounting of first guide plate (31) and second guide plate (32) has dust screen (33).

4. The printhead heat sink for a 3D printing engraving machine of claim 1, wherein: the bottom end of the printing head main body (1) is exposed out of the bottom surface of the heat dissipation structure (2).

5. The printhead heat sink for a 3D printing engraving machine of claim 1, wherein: the slow flow groove (23) is of a funnel-shaped structure, the air inlet pipe (24) is fixedly connected with the circular pipe (29), and the air inlet pipe (24) is communicated with the inside of the circular pipe (29).

6. The printhead heat sink for a 3D printing engraving machine of claim 2, wherein: the cooling pipe (27) is attached to the surface of the heat conducting plate (25), and the right side wall of the shell (21) is exposed from both ends of the cooling pipe (27).

7. The printhead heat sink for a 3D printing engraving machine of claim 2, wherein: the spray head (210) is installed in an inclined mode.

8. The printhead heat sink for a 3D printing engraving machine of claim 3, wherein: the first guide plate (31) and the second guide plate (32) are of funnel-shaped structures, and the first guide plate (31) is arranged on the outer side of the second guide plate (32).