CN214820923U

CN214820923U - Cooling device for 3D printer nozzle

Info

Publication number: CN214820923U
Application number: CN202120846377.4U
Authority: CN
Inventors: 雷捷
Original assignee: Hubei Biyin 3d Technology Co ltd
Current assignee: Hubei Biyin 3d Technology Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-23
Anticipated expiration: 2031-04-23

Abstract

The utility model provides a cooling device for 3D print head, including the spray tube, the nozzle is installed to the bottom of spray tube, the external fixed surface of spray tube has multiunit cooling fin, cooling fin's bottom is provided with rotatory paddle, rotatory paddle rotates the cover and establishes on the bottom outer wall of spray tube, the multiunit cooling fin's the outside is fixed with the water-stop sheet, the outside of water-stop sheet is provided with thermal-insulated dustcoat, the top of thermal-insulated dustcoat with the outer wall fixed connection of spray tube, the bottom of thermal-insulated dustcoat with the top surface fixed connection of nozzle, the top of water-stop sheet with the roof fixed connection of thermal-insulated dustcoat, the top both sides of thermal-insulated dustcoat are provided with inlet tube and outlet pipe respectively. The utility model discloses well coolant liquid promotes rotatory paddle rotatory, and rotatory paddle stirs that the coolant liquid is even respectively and enters into between the multiunit cooling fin, takes away the spray tube heat of cooling fin conduction, plays the refrigerated effect of cooling down.

Description

Cooling device for 3D printer nozzle

Technical Field

The utility model relates to a 3D print head cooling technology field especially relates to a cooling device for 3D print head.

Background

The nozzle of the 3D printer is one of the core components of the 3D printer, and the quality of molding is determined to a large extent. The smoothness of the silk material flowing out of the extrusion nozzle and the temperature of the silk material directly influence the precision of 3D printing. However, if the temperature of the nozzle is too high, other components will be dissolved and burnt, so a heat dissipation device is needed to control the temperature of the nozzle within a certain range.

At present, a heat radiation fan is usually installed at a spray head to radiate the spray head, but in the printing process, the vibration generated by the operation of the heat radiation fan can seriously affect the forming quality of the 3D printer, for example, a 3D printer spray head cooling device is disclosed as CN106541572A, a winding cooling pipe mode is adopted, but the mode has the following defects that 1, the combination area of the cooling pipe and the spray head is small, and the heat conduction effect is poor; 2. the cooling pipe surrounds the surface of the spray head and is sequentially cooled from one end to the other end, so that the heat absorption effect of the cooling tail end cooling pipe is reduced, and the temperature gradient is easily generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cooling device for a 3D printer nozzle, which overcomes the problems or at least partially solves the problems, so as to solve the problems that the combination area of a cooling pipe and the nozzle is small and the heat conduction effect is poor; the cooling pipe surrounds the surface of the spray head and is sequentially cooled from one end to the other end, so that the heat absorption effect of the cooling tail end cooling pipe is reduced, and the problem of temperature gradient is easily caused.

In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:

the utility model provides a cooling device for 3D printer nozzle, including the spray tube, the nozzle is installed to the bottom of spray tube, the surface mounting of spray tube has multiunit cooling fin, cooling fin's bottom is provided with rotatory paddle, rotatory paddle rotates the cover and establishes on the bottom outer wall of spray tube, multiunit the outside of cooling fin is fixed with the water-stop sheet, the outside of water-stop sheet is provided with thermal-insulated dustcoat, the top of thermal-insulated dustcoat with the outer wall fixed connection of spray tube, the bottom of thermal-insulated dustcoat with the top surface fixed connection of nozzle, the top of water-stop sheet with the roof fixed connection of thermal-insulated dustcoat, the top both sides of thermal-insulated dustcoat are provided with inlet tube and outlet pipe respectively, the one end of inlet tube runs through the outer wall of thermal-insulated dustcoat and communicates with inside, the one end of outlet pipe runs through respectively thermal-insulated dustcoat with the outer wall of water-stop sheet, the water outlet pipe is communicated with the inner side of the water-stop sheet.

As a further scheme of the utility model, the extension board is installed to the top outer wall of spray tube, bottom surface one side of extension board is fixed with the cooler bin, the internally mounted of cooler bin has the circulating pump, the other end of inlet tube runs through the cooler bin and with the delivery port of circulating pump is linked together, the other end of outlet pipe with the inside of cooler bin is linked together.

As a further scheme of the utility model, the bottom surface laminating of cooler bin is fixed with the refrigeration piece, the refrigeration piece adopts parallelly connected multistage refrigeration structure jointly.

As a further proposal of the utility model, the cooling fins adopt a thin-wall spiral structure and are made of copper materials.

As a further aspect of the present invention, the blades of the rotary paddle extend to the inner wall of the heat insulating cover, and the direction of rotation of the blades of the rotary paddle is the same as the direction of rotation of the cooling fins.

As a further aspect of the present invention, the water-stop sheet and the heat-insulating cover form an internal cavity structure therebetween, and the bottom end of the water-stop sheet extends to above the blades of the rotary paddle.

As a further aspect of the present invention, the refrigeration plate and the circulation pump all employ a direct current safety voltage.

The utility model provides a cooling device for 3D print head, beneficial effect lies in:

through the rotating blades and the cooling fins which are arranged, the rotating blades rotate under the pushing of cooling water, so that the cooling water uniformly contacts with the cooling fins around the outer surface of the spray pipe, the cooling uniformity is improved, the influence of temperature gradient is reduced, the cooling fins adopt spiral structures to improve the length of the cooling fins, the contact area between the cooling water and the cooling fins is increased, and the cooling effect is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view provided in an embodiment of the present invention;

fig. 2 is a perspective cross-sectional view provided by an embodiment of the present invention;

fig. 3 is a sectional view of a cooling box according to an embodiment of the present invention;

fig. 4 is a front cross-sectional view of a water-stop sheet according to an embodiment of the present invention;

fig. 5 is an enlarged view of a point a in fig. 2 according to an embodiment of the present invention.

In the figure: 1. a nozzle; 2. a nozzle; 3. cooling the fins; 4. rotating the paddle; 5. a water-stop sheet; 6. a thermally insulating enclosure; 7. a water inlet pipe; 8. a water outlet pipe; 9. a support plate; 10. a cooling tank; 11. a circulation pump; 12. a refrigeration sheet.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1 to 5, the cooling device for a 3D printer nozzle of this embodiment includes a nozzle 1, a nozzle 2 is installed at a bottom end of the nozzle 1, a plurality of groups of cooling fins 3 are fixed on an outer surface of the nozzle 1, a rotating paddle 4 is arranged at a bottom of the cooling fins 3, the rotating paddle 4 is rotatably sleeved on an outer wall of the bottom end of the nozzle 1, a water-stop plate 5 is fixed on an outer side of the plurality of groups of cooling fins 3, a heat-insulating outer cover 6 is arranged on an outer side of the water-stop plate 5, a top end of the heat-insulating outer cover 6 is fixedly connected with an outer wall of the nozzle 1, a bottom end of the heat-insulating outer cover 6 is fixedly connected with a top surface of the nozzle 2, a top end of the water-stop plate 5 is fixedly connected with a top wall of the heat-insulating outer cover 6, a water inlet pipe 7 and a water outlet pipe 8 are respectively arranged on two sides of a top of the heat-insulating outer cover 6, one end of the water inlet pipe 7 is communicated with an inner portion of the heat-insulating outer cover 6 and one end of the water-stop plate 5, outlet pipe 8 and water-stop sheet 5's inboard intercommunication, during the use, the cooling water enters into thermal-insulated dustcoat 6 by inlet tube 7 to the rotatory paddle 4 that promotes the bottom begins to rotate, rotatory paddle 4 is cut apart the even stirring of cooling water and is entered into multiunit cooling fin 3 by the bottom of water-stop sheet 5, and the cooling water takes place the heat exchange with cooling fin 3, absorbs the back with the heat on cooling fin 3 surface and is discharged by outlet pipe 8, plays the effect to 1 even coolings of spray tube.

As shown in fig. 1-4, a support plate 9 is installed on the outer wall of the top of the spray pipe 1, a cooling tank 10 is fixed on one side of the bottom surface of the support plate 9, a circulating pump 11 is installed inside the cooling tank 10, the other end of the water inlet pipe 7 penetrates through the cooling tank 10 and is communicated with a water outlet of the circulating pump 11, the other end of the water outlet pipe 8 is communicated with the inside of the cooling tank 10, the support plate 9 supports the cooling tank 10, and the circulating pump 11 conveys cooling water in the cooling tank 10 into the heat insulation outer cover 6 through the water inlet pipe 7 to provide a medium function for cooling the spray pipe 1.

As shown in fig. 1 and 3, the bottom surface of the cooling box 10 is fixedly attached with the refrigeration sheet 12, the refrigeration sheet 12 adopts a parallel multistage combined refrigeration structure, the refrigeration sheet 12 adopts a semiconductor refrigeration principle, and has vibration components with simple structure, rapid refrigeration, no noise and the like, and a parallel multistage combined refrigeration mode is used to obtain a larger refrigeration capacity, which is the prior art and is not described in detail.

As shown in fig. 2, 4 and 5, the cooling fins 3 are of thin-wall spiral structures, the cooling fins 3 are made of copper materials, the spiral structures improve the length of the cooling fins 3, the contact area between cooling water and the cooling fins 3 is increased, the cooling effect is improved, the copper materials have good thermal conductivity, the conduction speed is high, and the reduction of temperature deviation is facilitated.

As shown in fig. 2, 4 and 5, the blades of the rotating blades 4 extend to the inner wall of the heat insulation outer cover 6, and the rotating direction of the blades of the rotating blades 4 is the same as that of the cooling fins 3, so that cooling water flows along the rotating direction of the blades of the rotating blades 4 and the rotating direction of the cooling fins 3, thereby reducing the fluid resistance and saving energy.

As shown in fig. 2, 4 and 5, an internal cavity structure is formed between the water-stop sheet 5 and the heat-insulation outer cover 6, the bottom end of the water-stop sheet 5 extends to the position above the blades of the rotating paddle 4, and the cavity structure plays a role of a heat-insulation shielding layer, so that the outer wall of the heat-insulation outer cover 5 keeps a lower temperature, a protection effect is achieved, and people are prevented from being scalded when touching the heat-insulation outer cover 5.

As shown in figures 1 and 3, the refrigerating sheet 12 and the circulating pump 11 both adopt direct-current safe voltage, the circulating pump 11 is immersed in cooling water to work, the safe voltage is used, the safety of the equipment is improved, and the equipment is prevented from being damaged by electric leakage to personnel.

The utility model discloses a theory of operation and application method:

during the use, the cooling water in the cooling box 10 is carried by inlet tube 7 to the circulating pump 11 in the thermal-insulated dustcoat 6, and promote the rotatory paddle 4 of bottom to begin to rotate, rotatory paddle 4 enters into multiunit cooling fin 3 with the even stirring mixture of cooling water by the bottom of water-stop sheet 5, the cooling water takes place the heat exchange with cooling fin 3, discharge the cooling box 10 by outlet pipe 8 after absorbing the heat on cooling fin 3 surface, refrigeration piece 12 adopts the semiconductor refrigeration principle, and use the mode of parallelly connected multistage joint refrigeration, obtain great refrigerating output, cooling water in the cooling box 10 carries out cooling cyclic utilization.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The cooling device for the 3D printer nozzle is characterized by comprising a spray pipe (1), a nozzle (2) is installed at the bottom end of the spray pipe (1), a plurality of groups of cooling fins (3) are fixed on the outer surface of the spray pipe (1), a rotating paddle (4) is arranged at the bottom of each cooling fin (3), the rotating paddle (4) is rotatably sleeved on the outer wall of the bottom end of the spray pipe (1), a water-stop plate (5) is fixed on the outer side of each cooling fin (3), a heat-insulating outer cover (6) is arranged on the outer side of each water-stop plate (5), the top end of each heat-insulating outer cover (6) is fixedly connected with the outer wall of the spray pipe (1), the bottom end of each heat-insulating outer cover (6) is fixedly connected with the top surface of the nozzle (2), the top end of each water-stop plate (5) is fixedly connected with the top wall of each heat-insulating outer cover (6), the top both sides of thermal-insulated dustcoat (6) are provided with inlet tube (7) and outlet pipe (8) respectively, the one end of inlet tube (7) is run through the outer wall of thermal-insulated dustcoat (6) and with inside intercommunication, the one end of outlet pipe (8) is run through respectively thermal-insulated dustcoat (6) with the outer wall of water-stop sheet (5), outlet pipe (8) with the inboard intercommunication of water-stop sheet (5).

2. The cooling device for the 3D printer nozzle according to claim 1, wherein a support plate (9) is installed on the outer wall of the top of the spray pipe (1), a cooling tank (10) is fixed on one side of the bottom surface of the support plate (9), a circulating pump (11) is installed inside the cooling tank (10), the other end of the water inlet pipe (7) penetrates through the cooling tank (10) and is communicated with a water outlet of the circulating pump (11), and the other end of the water outlet pipe (8) is communicated with the inside of the cooling tank (10).

3. The cooling device for the 3D printer nozzle as claimed in claim 2, wherein a refrigeration sheet (12) is fixedly attached to the bottom surface of the cooling box (10), and the refrigeration sheet (12) adopts a parallel multi-stage combined refrigeration structure.

4. The cooling device for the 3D printer head according to claim 3, characterized in that the cooling fins (3) are of thin-walled helical structure, and the cooling fins (3) are made of copper material.

5. The cooling device for a 3D printer head according to claim 4, characterized in that the blades of the rotating blade (4) extend to the inner wall of the heat shield (6), and the blades of the rotating blade (4) rotate in the same direction as the cooling fins (3).

6. The cooling device for 3D printer head according to claim 5, characterized in that an internal cavity structure is formed between the water stop sheet (5) and the heat insulation cover (6), and the bottom end of the water stop sheet (5) extends above the blade of the rotating blade (4).

7. The cooling device for a 3D printer head according to claim 6, characterized in that the cooling plate (12) and the circulation pump (11) both use a direct current safety voltage.