FFF printer water-cooled nozzle

Abstract

The utility model relates to a kind of FFF printer water-cooled spray head, belong to FFF printer technical field, including base and the fixed connection in the top of base printer body, the front of printer body is provided with moving seat, the top of base is provided with the heat dissipation mechanism that can heat dissipation cooling liquid, the heat dissipation mechanism includes fixed connection in the top of base conveying pump, the top of base is fixedly connected with heat dissipation box, the inside of heat dissipation box is fixedly connected with the heat-conducting copper pipe extending to its outside.The FFF printer water-cooled spray head, by setting heat-conducting copper pipe and radiating fin, heat-conducting copper pipe on the heat can be transferred to radiating fin among, while heat-conducting copper pipe and the contact surface of outside air can be greatly improved, and then by setting drive motor drives radiating fan rotation, the effect that heat-conducting copper pipe and radiating fin can be continuously heat-dissipated, cooling liquid inside heat-conducting copper pipe is conveniently heat-dissipated, and cooling liquid use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of FFF printer technology, specifically to a water-cooled nozzle for an FFF printer. Background Technology

[0002] FFF printers are 3D printers based on fused filament manufacturing technology. Compared to other 3D printing technologies, they are relatively affordable, require minimal maintenance (no professional personnel are needed), and have low operating costs. The device can be placed directly on a desktop or mounted on a rack; the entire printing process operates independently without additional equipment. The raw materials used are primarily supplied in spool form, commonly referred to as filament, which is easy to use and can be stored for extended periods.

[0003] Water-cooled printheads are required in the use of FFF printers. Chinese utility model patent CN211222070U discloses a water-cooled printhead for an FFF printer, including a water-cooling block, a filament extrusion mechanism, and a motor that powers the filament extrusion mechanism. A throat is located within the water-cooling block, connecting to the nozzle. A circulation channel is also located within the water-cooling block, and an inlet and outlet are provided. A heat-conducting layer is provided on the contact surface between the motor and the water-cooling block. The water-cooling block has internal threads, and the throat has external threads, which are threaded together. Heat dissipation fins are evenly distributed circumferentially along the throat. Fin slots corresponding to the positions of the heat dissipation fins are provided on the water-cooling block, and these slots are inserted into the heat dissipation fins. This utility model, through the above-mentioned design, keeps the throat and motor in a cooled state, thus preventing the throat from overheating and causing nozzle blockage. Simultaneously, the motor's operation is not affected by overheating, which would impact filament extrusion quality. This improves print quality and yield, and extends the lifespan of the throat and motor.

[0004] However, this utility model does not have a structure for dissipating heat from the coolant during use. As a result, after the coolant has been circulating for a long time, the cooling effect of the coolant itself will decrease, which will affect the working effect of the entire printhead and fail to meet production requirements. Therefore, a water-cooled printhead for an FFF printer is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a water-cooled printhead for an FFF printer, which has the advantage of facilitating the dissipation of coolant. This solves the problem that existing water-cooled printheads do not have a structure for dissipating coolant, which leads to a decrease in the cooling effect of the coolant itself after prolonged circulation, thus affecting the overall working performance of the printhead.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an FFF printer water-cooled nozzle, comprising a base and a printer body fixedly connected to the top of the base, wherein a movable seat is provided on the front of the printer body, and a heat dissipation mechanism capable of dissipating heat from the coolant is provided on the top of the base.

[0007] The heat dissipation mechanism includes a delivery pump fixedly connected to the top of the base, a heat dissipation box fixedly connected to the top of the base, a heat-conducting copper pipe fixedly connected inside the heat dissipation box extending to its outside, heat dissipation fins fixedly connected to the outside of the heat-conducting copper pipe, a drive motor fixedly connected to one side of the heat dissipation box, and a cooling fan extending into the heat dissipation box fixedly connected to the output shaft of the drive motor.

[0008] Furthermore, one end of the heat-conducting copper tube is fixedly connected to an inlet end extending to the front of the heat sink, the output end of the delivery pump is fixedly connected to the inlet end, and the other end of the heat-conducting copper tube is fixedly connected to an outlet end extending to the top of the heat sink.

[0009] Furthermore, an air inlet screen is fixedly connected to the side of the heat sink near the drive motor, and an air outlet screen is fixedly connected to the side of the heat sink away from the air inlet screen.

[0010] Furthermore, a nozzle housing is fixedly connected to the front of the movable base, a filament extrusion mechanism is provided inside the nozzle housing, a heat dissipation cover is fixedly connected to the outside of the filament extrusion mechanism, and a heat-conducting plate that contacts the filament extrusion mechanism is fixedly connected inside the heat dissipation cover.

[0011] Furthermore, a heat-absorbing pipe is fixedly connected inside the heat dissipation shroud. The heat-absorbing pipe abuts against the heat-conducting plate. At both ends of the heat-absorbing pipe, an inlet pipe and an outlet pipe extending to the top of the nozzle housing are fixedly connected, respectively.

[0012] Furthermore, the inlet pipe is fixedly connected to the input end of the delivery pump, and the outlet pipe is fixedly connected to the outlet end.

[0013] Furthermore, the bottom of the extrusion mechanism is fixedly connected to an extrusion head extending to the bottom of the nozzle housing, and the top of the extrusion mechanism is fixedly connected to a feed pipe extending to the top of the nozzle housing.

[0014] Compared with the prior art, this utility model provides a water-cooled printhead for an FFF printer, which has the following beneficial effects:

[0015] 1. This FFF printer's water-cooled printhead, by incorporating heat-conducting copper pipes and heat dissipation fins, allows heat to be transferred from the copper pipes to the fins. It also significantly increases the contact area between the copper pipes and the outside air. Furthermore, a drive motor rotates the cooling fan, continuously dissipating heat from the copper pipes and fins. This facilitates the cooling of the coolant inside the copper pipes, improving the coolant's performance.

[0016] 2. This FFF printer's water-cooled printhead, through the setting of a heat-conducting plate and heat-absorbing pipes, can fully absorb the heat generated by the extrusion mechanism. At the same time, in conjunction with the liquid inlet and outlet pipes, it can allow the coolant to circulate inside the heat-absorbing pipes, thereby further improving the heat dissipation efficiency. This solves the problem that existing water-cooled printheads do not have a structure to dissipate heat from the coolant, which causes the coolant's own cooling effect to decrease after long-term circulation, thus affecting the working performance of the entire printhead. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the heat dissipation mechanism of this utility model;

[0019] Figure 3 This is a three-dimensional structural view of the heat dissipation box of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the heat sink of this utility model.

[0021] In the diagram: 1. Base; 2. Printer body; 3. Movable base; 4. Printhead housing; 5. Delivery pump; 6. Heat sink; 7. Thermal copper pipe; 8. Heat sink fins; 9. Drive motor; 10. Cooling fan; 11. Liquid inlet; 12. Liquid outlet; 13. Air inlet grille; 14. Air outlet grille; 15. Extrusion mechanism; 16. Heat sink cover; 17. Heat-conducting plate; 18. Heat absorption pipe; 19. Liquid inlet pipe; 20. Liquid outlet pipe; 21. Extruder head. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 3This embodiment of an FFF printer water-cooled nozzle includes a base 1 and a printer body 2 fixedly connected to the top of the base 1. A movable seat 3 is provided on the front of the printer body 2. A heat dissipation mechanism for dissipating heat from the coolant is provided on the top of the base 1. The heat dissipation mechanism includes a delivery pump 5 fixedly connected to the top of the base 1. A heat dissipation box 6 is fixedly connected to the top of the base 1. A heat-conducting copper pipe 7 extending to the outside of the heat dissipation box 6 is fixedly connected inside the heat dissipation box 6. Heat dissipation fins 8 are fixedly connected to the outside of the heat-conducting copper pipe 7. A drive motor 9 is fixedly connected to one side of the heat dissipation box 6. A cooling fan 10 extending into the heat dissipation box 6 is fixedly connected to the output shaft of the drive motor 9.

[0024] Specifically, one end of the heat-conducting copper pipe 7 is fixedly connected to an inlet end 11 extending to the front of the heat sink 6, the output end of the delivery pump 5 is fixedly connected to the inlet end 11, and the other end of the heat-conducting copper pipe 7 is fixedly connected to an outlet end 12 extending to the top of the heat sink 6.

[0025] It should be noted that an air inlet mesh 13 is fixedly connected to the side of the heat sink 6 closest to the drive motor 9, and an air outlet mesh 14 is fixedly connected to the side of the heat sink 6 away from the air inlet mesh 13. Both the air inlet mesh 13 and the air outlet mesh 14 are one-way dustproof grilles, which can effectively prevent dust from entering and facilitate cleaning by staff.

[0026] Please see Figure 1 and Figure 4 In this embodiment, a nozzle housing 4 is fixedly connected to the front of the movable base 3. A filament extrusion mechanism 15 is provided inside the nozzle housing 4. A heat dissipation cover 16 is fixedly connected to the outside of the filament extrusion mechanism 15. A heat-conducting plate 17 that contacts the filament extrusion mechanism 15 is fixedly connected inside the heat dissipation cover 16. A heat absorption pipe 18 is fixedly connected inside the heat dissipation cover 16. The heat absorption pipe 18 abuts against the heat-conducting plate 17. An inlet pipe 19 and an outlet pipe 20 extending to the top of the nozzle housing 4 are fixedly connected to both ends of the heat absorption pipe 18, respectively.

[0027] Specifically, the inlet pipe 19 is fixedly connected to the input end of the delivery pump 5, and the outlet pipe 20 is fixedly connected to the outlet end 12.

[0028] It should be noted that the heat absorption pipe 18 is an annular serpentine tube, which can fully contact the heat conduction plate 17, thereby improving the overall heat conduction efficiency. Coolant is installed inside the heat absorption pipe 18. By setting up the heat conduction plate 17 and the heat absorption pipe 18, the heat generated by the extrusion mechanism 15 can be fully absorbed. At the same time, in conjunction with the liquid inlet pipe 19 and the liquid outlet pipe 20, the coolant can circulate inside the heat absorption pipe 18, thereby further improving the heat dissipation efficiency.

[0029] Please see Figure 1 and Figure 4In this embodiment, the bottom of the extrusion mechanism 15 is fixedly connected to an extrusion head 21 extending to the bottom of the nozzle housing 4, and the top of the extrusion mechanism 15 is fixedly connected to a feed pipe extending to the top of the nozzle housing 4.

[0030] The working principle of the above embodiments is as follows:

[0031] First, during the operation of the printer body 2, the operator starts the delivery pump 5 and the drive motor 9. On the one hand, the delivery pump 5 circulates the coolant inside the heat-conducting copper pipe 7 to the heat-absorbing pipe 18. On the other hand, the drive motor 9 drives the cooling fan 10 to rotate, which dissipates the coolant inside the heat-conducting copper pipe 7. At the same time, during the operation of the extrusion mechanism 15, the heat generated by it is absorbed through the heat-conducting plate 17 and the heat-absorbing pipe 18, and finally the heat is transferred to the coolant. At this time, the heat dissipation of the extrusion mechanism 15 can be achieved.

[0032] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0033] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-cooled printhead for an FFF printer, comprising a base (1) and a printer body (2) fixedly connected to the top of the base (1), characterized in that: The printer body (2) has a movable base (3) on its front side, and the base (1) has a heat dissipation mechanism on its top that can dissipate heat from the coolant. The heat dissipation mechanism includes a delivery pump (5) fixedly connected to the top of the base (1), a heat dissipation box (6) fixedly connected to the top of the base (1), a heat-conducting copper pipe (7) extending to the outside of the heat dissipation box (6) fixedly connected inside the heat dissipation box (6), heat dissipation fins (8) fixedly connected to the outside of the heat-conducting copper pipe (7), a drive motor (9) fixedly connected to one side of the heat dissipation box (6), and a cooling fan (10) extending into the heat dissipation box (6) fixedly connected to the output shaft of the drive motor (9).

2. The water-cooled printhead for an FFF printer according to claim 1, characterized in that: One end of the heat-conducting copper tube (7) is fixedly connected to an inlet end (11) extending to the front of the heat sink (6), the output end of the delivery pump (5) is fixedly connected to the inlet end (11), and the other end of the heat-conducting copper tube (7) is fixedly connected to an outlet end (12) extending to the top of the heat sink (6).

3. The water-cooled printhead for an FFF printer according to claim 1, characterized in that: An air inlet screen (13) is fixedly connected to the side of the heat sink (6) near the drive motor (9), and an air outlet screen (14) is fixedly connected to the side of the heat sink (6) away from the air inlet screen (13).

4. The water-cooled printhead for an FFF printer according to claim 1, characterized in that: The front of the movable base (3) is fixedly connected to the nozzle housing (4), the nozzle housing (4) is provided with a filament extrusion mechanism (15), the filament extrusion mechanism (15) is fixedly connected to the outside of the filament extrusion mechanism (15), and the heat dissipation cover (16) is fixedly connected to the inside of the heat dissipation cover (16) and a heat-conducting plate (17) in contact with the filament extrusion mechanism (15).

5. A water-cooled printhead for an FFF printer according to claim 4, characterized in that: The heat dissipation shroud (16) is fixedly connected to a heat absorption pipe (18), which abuts against the heat conduction plate (17). The two ends of the heat absorption pipe (18) are respectively fixedly connected to an inlet pipe (19) and an outlet pipe (20) extending to the top of the nozzle housing (4).

6. A water-cooled printhead for an FFF printer according to claim 5, characterized in that: The inlet pipe (19) is fixedly connected to the input end of the delivery pump (5), and the outlet pipe (20) is fixedly connected to the outlet end (12).

7. A water-cooled printhead for an FFF printer according to claim 4, characterized in that: The bottom of the extrusion mechanism (15) is fixedly connected to an extrusion head (21) extending to the bottom of the nozzle housing (4), and the top of the extrusion mechanism (15) is fixedly connected to a feed pipe extending to the top of the nozzle housing (4).

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