3D printing high-temperature-resistant spray head convenient to replace

Abstract

The utility model discloses a 3D printing high-temperature-resistant spray head convenient to replace, and relates to the technical field of 3D printing spray heads. The LED lamp comprises a heat dissipation block. The two balls are pushed to move towards the outside of the connecting mechanism through the spray head mechanism, then a part of the balls enter the ball driving mechanism, at the moment, the balls do not limit movement of the spray head mechanism any more, locking of the spray head mechanism is relieved, and after an old spray head mechanism is taken down, the spray head mechanism is locked. Then a new spray head mechanism is aligned with the two guide pipes and inserted into the two guide pipes, the hand rotating mechanism is loosened, the two ball driving mechanisms reset under the self-elasticity effect, and the two ball driving mechanisms push the two balls to enter the area limiting the outer wall of the spray head mechanism; and then the two ball driving mechanisms limit the movement of the two balls in the connecting mechanism through the side walls of the two ball driving mechanisms again, so that the spray head mechanism cannot move relative to the throat pipe, and then rapid installation of a new spray head mechanism is completed.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing nozzle technology, and specifically relates to a high-temperature resistant 3D printing nozzle that is easy to replace. Background Technology

[0002] With the continuous evolution of 3D printing technology, 3D printers have become an important device for creating three-dimensional objects by printing layers of adhesive materials such as special waxes, powdered metals, or plastics based on digital model files. Among them, the print head, as a key component of the 3D printer that extrudes molten material, plays an indispensable role in the printing process.

[0003] However, in actual production scenarios, many printheads are fixed in place, such as by screws. When a printhead needs to be replaced, workers have to spend a lot of time using tools to unscrew it. The process is cumbersome and complicated. Moreover, in scenarios where printheads are frequently replaced, performing such a cumbersome operation every time greatly reduces work efficiency and seriously affects printing progress.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a high-temperature resistant 3D printing nozzle that is easy to replace, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a replaceable high-temperature resistant nozzle for 3D printing, comprising a heat sink, a feed pipe installed at one end of the heat sink, a heating block installed at the other end of the heat sink, a throat tube inside the heating block, a connecting mechanism installed at one end of the throat tube, symmetrically arranged spheres inside the connecting mechanism, a sphere driving mechanism around each of the two spheres, a hand-operated mechanism rotatably installed inside the connecting mechanism, the two sphere driving mechanisms being fixedly installed with the hand-operated mechanism respectively, guide tubes symmetrically fixedly installed inside the connecting mechanism, and a nozzle mechanism inside the heating block, the nozzle mechanism being fitted and connected to one end of the throat tube.

[0008] Furthermore, the connecting mechanism includes a fixing plate, which is fixedly installed at the bottom of the heating block. A circular tube is installed on the central axis of the fixing plate, and the circular tube has symmetrical movable grooves.

[0009] Furthermore, the two spheres are respectively located in the two movable slots, a connecting piece is fixedly installed at the other end of the circular tube, and fixed pieces are symmetrically fixedly installed on the outer wall of the circular tube.

[0010] Furthermore, the ball driving mechanism includes an elastic element, one end of which is fixedly installed inside the fixed plate, and the other end of which is fixedly installed with a slider.

[0011] Furthermore, an inlet groove is formed inside the slider, one side of the inlet groove is inclined, and a connecting strip is fixedly installed at one end of the slider.

[0012] Furthermore, the manual rotation mechanism includes a manual rotation plate, which is rotatably mounted on the fixed plate, and multiple anti-slip blocks are fixedly installed on the outer wall of the manual rotation plate.

[0013] Furthermore, the nozzle mechanism includes a connecting pipe, the inner ring at the top of the connecting pipe being chamfered, and the outer ring at the bottom of the throat being chamfered.

[0014] Furthermore, a nozzle is installed at the end of the connecting pipe, and a slot is provided inside the connecting pipe, with one end of the slot being set at a chamfer.

[0015] Furthermore, the nozzle has symmetrically fixed rods at its top, and the two fixed rods are slidably installed inside the two guide tubes respectively.

[0016] This utility model has the following beneficial effects:

[0017] When the nozzle needs to be replaced, the operator first needs to manually rotate the hand-operated mechanism. This mechanism will cause the two connected ball drive mechanisms to rotate. At this time, the side walls of the two ball drive mechanisms will no longer restrict the two balls within the nozzle mechanism, allowing them to move freely within the connecting mechanism. Then, the nozzle mechanism is pulled to separate it from the throat. Simultaneously, the nozzle mechanism will push the two balls outward from the connecting mechanism. Subsequently, part of the balls will enter the ball drive mechanism, where they will no longer restrict the movement of the nozzle mechanism, thus releasing the lock. After removing the old nozzle mechanism, the new nozzle mechanism is aligned with the two guide tubes and inserted. The hand-operated mechanism is then released, and the two ball drive mechanisms reset under their own elasticity. They will push the two balls into the area that previously restricted the outer wall of the nozzle mechanism. Then, the two ball drive mechanisms again use their side walls to limit the movement of the two balls within the connecting mechanism, preventing the nozzle mechanism from moving relative to the throat, thus completing the rapid installation of the new nozzle mechanism.

[0018] The nozzle mechanism of this utility model is made of alumina ceramic material, which gives it the characteristics of high melting point, high strength, high hardness and good chemical stability. It can effectively resist high temperature and improve the high temperature resistance and wear resistance of the nozzle.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the nozzle mechanism of this utility model.

[0023] Figure 3 This is an exploded view of the nozzle of this utility model;

[0024] Figure 4 This is a partial sectional view of the circular tube and an internal view of the manual rotating mechanism of this utility model;

[0025] Figure 5 This is an overall structural diagram of the connecting mechanism of this utility model;

[0026] Figure 6 This is an overall structural diagram of the nozzle mechanism of this utility model;

[0027] Figure 7 This is an overall structural diagram of the ball drive mechanism of this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Heat sink; 2. Feed pipe; 3. Throat; 4. Connecting mechanism; 401. Fixing plate; 402. Round tube; 403. Movable groove; 404. Connecting plate; 405. Fixed plate; 5. Sphere; 6. Sphere drive mechanism; 601. Elastic element; 602. Slider; 603. Feed groove; 604. Connecting bar; 7. Manual rotation mechanism; 701. Manual rotation plate; 702. Anti-slip block; 8. Guide tube; 9. Nozzle mechanism; 901. Connecting tube; 902. Nozzle; 903. Slot; 904. Fixing rod; 10. Heating block. Detailed Implementation

[0030] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0032] Please see Figures 1-7 As shown, this utility model is a replaceable high-temperature resistant 3D printing nozzle, including a heat sink 1, a feed pipe 2 installed at one end of the heat sink 1, a heating block 10 installed at the other end of the heat sink 1, a throat 3 provided inside the heating block 10, a connecting mechanism 4 installed at one end of the throat 3, spherical bodies 5 symmetrically arranged inside the connecting mechanism 4, spherical driving mechanisms 6 provided around the two spherical bodies 5, a hand-operated mechanism 7 rotatably installed inside the connecting mechanism 4, the two spherical driving mechanisms 6 being fixedly installed with the hand-operated mechanism 7 respectively, guide tubes 8 symmetrically fixedly installed inside the connecting mechanism 4, and a nozzle mechanism 9 provided inside the heating block 10, which is fitted and connected to one end of the throat 3.

[0033] The main function of heat sink 1 is to dissipate heat from the nozzle. The feed pipe 2 is the channel for the printing material to enter the nozzle. Inside the heating block 10, it plays the role of transitioning and guiding the printing material. This is existing technology and is not considered an innovation in this solution, but only to help to better understand this solution.

[0034] It is important to note that the nozzle mechanism 9 is made entirely of alumina ceramic, which gives it characteristics such as high melting point, high strength, high hardness, and good chemical stability. This effectively resists high temperatures and improves the nozzle's high temperature resistance and wear resistance.

[0035] When the nozzle needs to be replaced, the operator first needs to manually rotate the hand-operated mechanism 7. This mechanism 7 will then drive the two connected ball drive mechanisms 6 to rotate. The two ball drive mechanisms 6 then overcome their internal elasticity and rotate, increasing their internal elastic potential energy. As the two ball drive mechanisms 6 continue to rotate, they will be simultaneously blocked by the two guide tubes 8. At this point, the side walls of the two ball drive mechanisms 6 no longer restrict the two balls 5 within the nozzle mechanism 9, allowing the two balls 5 to move freely within the connecting mechanism 4. The nozzle mechanism 9 is pulled to separate from the throat tube 3. At the same time, the nozzle mechanism 9 will push the two balls 5 to move outwards towards the connecting mechanism 4. Then, part of the balls 5 will enter the ball drive mechanism 6. At this time, the balls 5 will no longer restrict the movement of the nozzle mechanism 9, and the locking of the nozzle mechanism 9 will be released. After the old nozzle mechanism 9 is removed, the new nozzle mechanism 9 is aligned with the two guide tubes 8 and inserted. Then the nozzle mechanism 9 will also be inserted into the connecting mechanism 4, and then inserted into the heating block 10 to contact the throat tube 3.

[0036] Next, the hand-operated mechanism 7 is released, and the two ball drive mechanisms 6 reset under their own elasticity. The two ball drive mechanisms 6 will push the two balls 5 into the area that restricts the outer wall of the nozzle mechanism 9. Then, the two ball drive mechanisms 6 will use their side walls to limit the movement of the two balls 5 in the connecting mechanism 4, so that the nozzle mechanism 9 cannot move relative to the throat 3, thereby completing the quick installation of the new nozzle mechanism 9.

[0037] More specifically: In one embodiment, the connecting mechanism 4 includes a fixing plate 401, which is fixedly installed at the bottom of the heating block 10. A round tube 402 is installed on the central axis of the fixing plate 401, and the round tube 402 is symmetrically provided with movable grooves 403.

[0038] The two spheres 5 are respectively located in the two movable slots 403, and a connecting piece 404 is fixedly installed at the other end of the circular tube 402. Fixed pieces 405 are symmetrically fixedly installed on the outer wall of the circular tube 402.

[0039] The ball driving mechanism 6 includes an elastic element 601, one end of which is fixedly installed in the fixed plate 405, and the other end of which is fixedly installed with a slider 602.

[0040] The slider 602 has an inlet groove 603, one side of which is inclined, and a connecting strip 604 is fixedly installed at one end of the slider 602.

[0041] The manual rotation mechanism 7 includes a manual rotation plate 701, which is rotatably mounted on the fixed plate 401. Multiple anti-slip blocks 702 are fixedly installed on the outer wall of the manual rotation plate 701.

[0042] The nozzle mechanism 9 includes a connecting pipe 901, the top inner ring of the connecting pipe 901 is chamfered, and the bottom outer ring of the throat pipe 3 is chamfered.

[0043] A nozzle 902 is installed at the end of the connecting pipe 901, and a slot 903 is provided inside the connecting pipe 901, with one end of the slot 903 being set at an angle.

[0044] The nozzle 902 is symmetrically fixedly mounted with fixing rods 904 at its top end, and the two fixing rods 904 are slidably installed in the two guide tubes 8 respectively.

[0045] When the printhead is working normally, the ball 5 in the movable groove 403 on the round tube 402 is pushed by the elastic element 601 (the elastic element 601 is preferably a spring) to make the slider 602 partially restrict the ball 5 in the slot 903 of the connecting tube 901. Thus, the two balls 5 limit the connecting tube 901 and the printhead 902. The two fixed rods 904 are also located in the two guide tubes 8. The two guide tubes 8 can not only guide the printhead 902 during installation, but also restrict its rotation on the horizontal plane. The chamfered outer ring at the bottom of the throat tube 3 cooperates with the chamfered inner ring at the top of the connecting tube 901 to ensure the normal delivery and extrusion of the printing material.

[0046] When the nozzle needs to be replaced, the operator rotates the hand-operated disc 701. The anti-slip block 702 on the outer wall of the hand-operated disc 701 increases friction, facilitating easy rotation. The rotation of the hand-operated disc 701 drives the connecting bar 604, which in turn drives the slider 602 to overcome the elastic force of the elastic element 601 and rotate towards the fixed plate 405. During the rotation of the slider 602, the inlet groove 603 is gradually exposed to the field of view of the sphere 5. When the connecting bar 604 rotates to the guide tube 8, the guide tube 8 restricts the continued rotation of the connecting bar 604. At this point, the inlet groove 603 is fully exposed to the field of view of the sphere 5. The sidewall of block 602 will not restrict the ball 5, so the ball 5 can move into the inlet groove 603. Then, the nozzle 902 is pulled, and the nozzle 902 will pull the connecting pipe 901 on it. Since one end of the slot 903 is set at an incline, when the connecting pipe 901 is pulled, the ball 5 slides outward along the inclined surface of the slot 903 in the movable groove 403. Then, part of the ball 5 enters the inlet groove 603. Here, the ball 5 will not completely enter the inlet groove 603, as long as it does not block the movement of the connecting pipe 901, thereby releasing the restriction on the connecting pipe 901.

[0047] At this point, the connecting pipe 901 is separated from the throat pipe 3. When installing the new nozzle 902, align the connecting pipe 901 of the new nozzle 902 with the throat pipe 3, and align the two fixing rods 904 with the two guide pipes 8 and insert them. Due to the chamfered inner ring at the top of the connecting pipe 901 and the chamfered outer ring of the throat pipe 3, it is easy for the two to be aligned and inserted. When the nozzle 902 touches the bottom of the connecting piece 404, that is, when the slot 903 of the connecting pipe 901 is on the same horizontal line as the two balls 5, release the hand-rotating piece 701, the elastic element 601 returns to its deformation, and pushes the slide. When block 602 resets, since one side of the inlet groove 603 is inclined, the inlet groove 603 will push the ball 5 to move, so that the ball 5 slides inward along the inclined surface of the inlet groove 603 in the movable groove 403, and then enters the slot 903 of the connecting pipe 901. As the slider 602 resets continuously, the side of the slider 602 will again restrict part of the ball 5 in the slot 903, thereby limiting the connecting pipe 901 and the nozzle 902 through the two balls 5, thus completing the quick installation of the new nozzle 902.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A replaceable high-temperature resistant nozzle for 3D printing, comprising a heat sink (1), a feed pipe (2) installed at one end of the heat sink (1), and a heating block (10) installed at the other end of the heat sink (1), wherein a throat (3) is provided inside the heating block (10), characterized in that: A connecting mechanism (4) is installed at one end of the throat tube (3). A ball (5) is symmetrically arranged inside the connecting mechanism (4). A ball driving mechanism (6) is provided around each of the two balls (5). A hand-operated mechanism (7) is rotatably installed inside the connecting mechanism (4). The two ball driving mechanisms (6) are fixedly installed with the hand-operated mechanism (7) respectively. A guide tube (8) is symmetrically fixedly installed inside the connecting mechanism (4). A nozzle mechanism (9) is provided inside the heating block (10). The nozzle mechanism (9) is connected to one end of the throat tube (3).

2. The easily replaceable high-temperature resistant 3D printing nozzle according to claim 1, characterized in that, The connecting mechanism (4) includes a fixing plate (401), which is fixedly installed at the bottom of the heating block (10). A round tube (402) is installed on the central axis of the fixing plate (401), and movable grooves (403) are symmetrically opened on the round tube (402).

3. The easily replaceable high-temperature resistant 3D printing nozzle according to claim 2, characterized in that, The two spheres (5) are located in the two movable slots (403) respectively. A connecting piece (404) is fixedly installed at the other end of the circular tube (402), and fixed pieces (405) are symmetrically fixedly installed on the outer wall of the circular tube (402).

4. The easily replaceable high-temperature resistant 3D printing nozzle according to claim 3, characterized in that, The ball drive mechanism (6) includes an elastic element (601), one end of which is fixedly installed in the fixed plate (405), and the other end of which is fixedly installed with a slider (602).

5. A replaceable high-temperature resistant 3D printing nozzle according to claim 4, characterized in that, The slider (602) has an inlet groove (603) inside, one side of the inlet groove (603) is inclined, and a connecting strip (604) is fixedly installed at one end of the slider (602).

6. The easily replaceable high-temperature resistant 3D printing nozzle according to claim 2, characterized in that, The hand-operated mechanism (7) includes a hand-operated plate (701), which is rotatably mounted on the fixed plate (401). Multiple anti-slip blocks (702) are fixedly installed on the outer wall of the hand-operated plate (701).

7. A replaceable high-temperature resistant 3D printing nozzle according to claim 6, characterized in that, The nozzle mechanism (9) includes a connecting pipe (901), the inner ring of the top of the connecting pipe (901) is chamfered, and the outer ring of the bottom of the throat pipe (3) is chamfered.

8. A replaceable high-temperature resistant 3D printing nozzle according to claim 7, characterized in that, A nozzle (902) is installed at the end of the connecting pipe (901), and a slot (903) is provided inside the connecting pipe (901), with one end of the slot (903) set at an inverted angle.

9. A replaceable high-temperature resistant 3D printing nozzle according to claim 8, characterized in that, The nozzle (902) is symmetrically fixed with fixing rods (904) at its top end, and the two fixing rods (904) are slidably installed in the two guide tubes (8).

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