Anti-jamming additive assisted feeding mechanism

Abstract

The utility model discloses a kind of anti-clogging additive auxiliary feeding mechanism, belong to 3D printing technical field;A kind of anti-clogging additive auxiliary feeding mechanism, including spray head body, spray head body includes the conical portion, hexagonal portion and connecting portion connected in turn, conical portion is wrapped with heating mechanism;Heating mechanism includes the heating sleeve of the conical portion, heating sleeve is inlaid with heating piece, heating sleeve is detachably connected at the bottom of hexagonal portion.The utility model is through setting heating mechanism, utilize heating mechanism to the hardened material in the conical portion of spray head body and heat melting, make heating mechanism and the heater of 3D printer mutually cooperate, make spray head body internal hardened material rapidly melt, not only can prevent normal printing when molten material solidifies and hardens in spray head bottom and causes blockage, still can prevent when long time stop printing and reprint, the blockage caused by material remaining in spray head.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to an anti-clogging additive manufacturing auxiliary feeding mechanism. Background Technology

[0002] When a 3D printer is not used for a long time, the molten material inside the nozzle gradually hardens. When the printer is used again, the heater is activated, and it melts the molten material. During the melting process, unmelted filament continuously enters the heater, causing the molten material to be ejected from the bottom of the nozzle. However, in actual melting, the bottom of the nozzle is far from the heater, resulting in poor heating at the bottom. This leads to poor melting of the hardened material at the bottom of the nozzle. Initially, a smaller diameter material is ejected from the bottom of the nozzle. As heating time increases, the diameter of the material ejected from the bottom of the nozzle gradually increases until it reaches a normal diameter, at which point 3D printing can begin. However, the transition from ejecting a smaller diameter material to a normal diameter material takes a long time, during which the ejected material is waste, easily leading to a waste of 3D printing raw materials. Utility Model Content

[0003] The purpose of this invention is to provide an additive auxiliary feeding mechanism to prevent clogging, so as to solve the problem that when a 3D printer is used again after being unused for a long time, the time it takes for the bottom of the nozzle to change from spraying material with a small diameter to spraying material with a normal diameter is long. During this long period of time, the material sprayed out is all waste material, which easily leads to the waste of 3D printing raw materials.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A clog-resistant additive manufacturing auxiliary feeding mechanism includes a nozzle body, which includes a conical part, a hexagonal part, and a connecting part connected in sequence. A heating mechanism is wrapped around the conical part. The heating mechanism includes a heating sleeve fitted onto the conical part, with a heating element embedded inside the heating sleeve. The heating sleeve is detachably connected to the bottom of the hexagonal part.

[0006] Furthermore, a second ring is fixed to the top of the heating sleeve, a first ring is fixed to the bottom of the hexagonal part, the first ring is fixedly sleeved on the outer wall of the conical part, the second ring is attached to the bottom of the first ring, a screw is fixed to the bottom of the first ring, the bottom of the screw moves through the second ring and is threaded with a nut, and the nut is pressed against the bottom of the second ring.

[0007] Furthermore, the heating element mentioned above is an electric heating wire.

[0008] Furthermore, a heat-conducting component is provided inside the heating sleeve. The heat-conducting component includes multiple protrusions fixed to the outer wall of the conical part. A groove is provided on the inner wall of the heating sleeve corresponding to the position of the protrusions, and the protrusions fit into the inner wall of the groove.

[0009] Furthermore, each of the aforementioned protrusions has an inclined surface on its opposite side, and the inner wall of the groove fits against the inclined surface.

[0010] Furthermore, a notch is provided on the side of the aforementioned protrusion away from the conical part, and a protrusion is fixed to the inner wall of the groove, with the protrusion fitting against the inner wall of the notch.

[0011] Furthermore, the inner wall of the aforementioned notch is inclined, and the shape of the protrusion matches the shape of the inner wall of the notch.

[0012] Furthermore, an anti-slip ring is fixedly fitted onto the outer wall of the heating sleeve, and an anti-slip groove is provided on the outer wall of the anti-slip ring.

[0013] This utility model has the following beneficial effects:

[0014] (1) By setting up a heating mechanism, the hardened material inside the conical part of the nozzle body is heated and melted. The heating mechanism and the heater of the 3D printer work together to quickly melt the hardened material inside the nozzle body. This not only prevents the molten material from solidifying and hardening at the bottom of the nozzle during normal printing and causing blockage, but also prevents the material remaining in the nozzle from causing blockage when printing is stopped for a long time and then restarted.

[0015] (2) The protrusions provided in this utility model are used to increase the contact area between the heating sleeve and the conical part, improve the heat conduction capacity between the heating sleeve and the conical part, thereby further shortening the melting time of the hardened material inside the nozzle body and greatly improving the melting efficiency of the hardened material inside the nozzle body.

[0016] (3) The present invention is provided with a bevel and a notch. The bevel is opened on the convex strip to increase the contact area between the convex strip and the heating sleeve, thereby further improving the heat conduction capacity between the heating sleeve and the conical part. The notch is opened on the side of the convex strip. The convex block inside the heating sleeve fits against the inner wall of the notch, further increasing the contact area between the convex strip and the heating sleeve, improving the heat conduction efficiency of both, and greatly shortening the melting time of the hardened material inside the nozzle body.

[0017] (4) The anti-slip ring provided in this utility model is used to provide a stable and non-slip force point when installing the heating sleeve. The heating sleeve is put on the conical part by pinching the anti-slip ring and fixed by the screw and nut. The anti-slip ring prevents slipping when pinching the nozzle, thereby improving the convenience and stability of the operation during the nozzle installation process. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the anti-clogging additive manufacturing auxiliary feeding mechanism of this utility model.

[0019] Figure 2 This is a schematic diagram of the anti-clogging additive auxiliary feeding mechanism of this utility model from another direction.

[0020] Figure 3 This is a cross-sectional view of the anti-clogging additive manufacturing auxiliary feeding mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation of the protruding strip of this utility model;

[0022] Figure 5 This is a schematic diagram of the groove structure of this utility model.

[0023] Reference numerals: 1. Nozzle body; 2. Conical part; 3. Hexagonal part; 4. Connecting part; 5. Heating mechanism; 6. Heating sleeve; 7. Heating element; 8. Raised strip; 9. Bevel; 10. Notch; 11. Groove; 12. Protrusion; 13. Ring 1; 14. Ring 2; 15. Anti-slip ring. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] like Figures 1-5 As shown, an embodiment of the present invention provides an anti-clogging additive manufacturing auxiliary feeding mechanism, including a nozzle body 1. The nozzle body 1 includes a conical part 2, a hexagonal part 3 and a connecting part 4 connected in sequence. A heating mechanism 5 is wrapped around the conical part 2.

[0026] During operation, the heating mechanism 5 heats and melts the hardened material inside the conical part 2. The nozzle body 1 is the core channel for material conveying and ejection. By clamping the wrench onto the hexagonal part 3, the connecting part 4 can be tightened onto the bottom of the heater of the 3D printer, thus achieving the connection and fixation between the nozzle body 1 and the heater. The heating mechanism 5 heats the hardened material inside the conical part 2, which on the one hand can prevent blockage inside the nozzle body 1, and on the other hand can shorten the time for the nozzle body 1 to resume normal material output, reduce material waste, and thus achieve auxiliary feeding in the 3D printing process.

[0027] like Figure 2 and Figure 3As shown, the heating mechanism 5 includes a heating sleeve 6 fitted onto the conical part 2. A heating element 7, which is an electric heating wire, is embedded inside the heating sleeve 6. When the electric heating wire is energized, it can quickly generate heat and rapidly transfer heat to the heating sleeve 6, thereby accelerating the melting of the hardened material inside the conical part 2, shortening the preparation time of the nozzle body 1, and reducing material waste. A wire hole is opened on the outer wall of the heating sleeve 6 for the wire to pass through. One end of the wire is connected to the heating element 7, and the other end is connected to an external power source, thereby enabling power supply to the heating element 7. At the same time, a switch can be installed on the wire to control the start and stop of the heating element 7. The heating sleeve 6 is detachably connected to the bottom of the hexagonal part 3. The heating sleeve 6 wraps around the conical part 2, providing a mounting carrier for the heating element 7 and transferring heat. When the heating element 7 is energized and generates heat, the heat is transferred to the conical part 2 through the heating sleeve 6, realizing the melting of the hardened material inside the conical part 2.

[0028] like Figure 2 and Figure 3 As shown, a second ring 14 is fixed to the top of the heating jacket 6, and a first ring 13 is fixed to the bottom of the hexagonal part 3. The first ring 13 is fixedly fitted onto the outer wall of the conical part 2. The second ring 14 fits against the bottom of the first ring 13. A screw is fixed to the bottom of the first ring 13. The bottom of the screw passes through the second ring 14 and is threaded with a nut. The nut presses against the bottom of the second ring 14. The fit between the first ring 13 and the second ring 14 provides dehumidification positioning for the heating jacket 6. The screw and the nut cooperate to fix the heating jacket 6 to the bottom of the hexagonal part 3 to prevent the heating jacket 6 from shifting. The heating jacket 6 can be removed by unscrewing the nut, making the operation convenient.

[0029] like Figures 3-5 As shown, a heat-conducting component is provided inside the heating sleeve 6. The heat-conducting component includes multiple protrusions 8 fixed to the outer wall of the conical part 2. A groove 11 is provided on the inner wall of the heating sleeve 6 corresponding to the position of the protrusions 8. The protrusions 8 fit into the inner wall of the groove 11. The fit between the protrusions 8 and the groove 11 increases the contact area between the heating sleeve 6 and the conical part 2, improves the heat conduction efficiency, and allows the material in the conical part 2 to melt faster, further shortening the time for the nozzle body 1 to resume normal material output. An inclined surface 9 is provided on the opposite side of the protrusions 8. The inner wall of the groove 11 fits into the inclined surface 9. The fit between the inclined surface 9 and the inner wall of the groove 11 further expands the contact area between the protrusions 8 and the heating sleeve 6, improves the heat conduction efficiency, accelerates the melting of the hardened material in the conical part 2, and further reduces the waste of printing material.

[0030] like Figures 3-5 As shown, a notch 10 is provided on the side of the protrusion 8 away from the conical part 2, and a protrusion 12 is fixed on the inner wall of the groove 11. The protrusion 12 fits against the inner wall of the notch 10. The fit between the protrusion 12 and the notch 10 further increases the contact area between the protrusion 8 and the heating sleeve 6, further improving the heat conduction efficiency, accelerating the melting speed of the material, and shortening the nozzle preparation time.

[0031] like Figure 4and Figure 5 As shown, the inner wall of the notch 10 is inclined, and the shape of the protrusion 12 is adapted to the shape of the inner wall of the notch 10. The inclined notch 10 and the adapted protrusion 12 fit together to ensure that the two are in close contact, avoid gaps that affect heat conduction, and facilitate the quick insertion of the protrusion 12 into the notch 10 when the heating sleeve 6 is installed, thus improving installation efficiency.

[0032] like Figure 2 As shown, an anti-slip ring 15 is fixedly fitted onto the outer wall of the heating sleeve 6. The outer wall of the anti-slip ring 15 has an anti-slip groove. The anti-slip ring 15 and the anti-slip groove increase the friction between the hand and the heating sleeve 6, preventing slippage when disassembling or installing the heating sleeve 6, and improving the stability and convenience of operation.

[0033] When the 3D printer needs to be used again after a long period of inactivity, the heating element 7 of the heating mechanism 5 is activated. The heating element 7 is powered on and heats up. The heat is transferred to the conical part 2 of the nozzle body 1 through the heating sleeve 6. At the same time, in order to improve the heat conduction efficiency between the heating sleeve 6 and the conical part 2, the convex strip 8 on the outer wall of the conical part 2 is closely fitted with the groove 11 on the inner wall of the heating sleeve 6, increasing the contact area between the two. The inclined surface 9 on the opposite side of the convex strip 8 is fitted with the inner wall of the groove 11, further expanding the heat conduction contact range. In addition, the notch 10 on the side of the convex strip 8 away from the conical part 2 is fitted with the protrusion 12 on the inner wall of the groove 11, further increasing the contact area between the convex strip 8 and the heating sleeve 6. Through multiple combinations, the heat conduction capacity of the heating sleeve 6 to the conical part 2 is greatly increased, so that the hardened material in the conical part 2 is quickly heated and melted, shortening the time for the bottom of the nozzle body 1 to change from ejecting material with a smaller diameter to material with a normal diameter, thereby greatly reducing the waste of 3D printing raw materials.

[0034] When the heating element 7 inside the heating sleeve 6 is damaged and needs to be replaced, the nut is unscrewed from the screw, and then the anti-slip ring 15 is pinched to remove the heating sleeve 6 from the conical part 2. Then, the anti-slip ring 15 on the new heating sleeve 6 is pinched to put the heating sleeve 6 on the conical part 2, so that the second ring 14 is put on the screw. Then, the nut is tightened so that the nut is pressed against the bottom of the second ring 14, which can fix the heating sleeve 6 and complete the replacement of the heating element 7.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clog-resistant additive manufacturing auxiliary feeding mechanism, comprising a nozzle body (1), characterized in that, The nozzle body (1) includes a conical part (2), a hexagonal part (3) and a connecting part (4) connected in sequence. A heating mechanism (5) is wrapped around the conical part (2). The heating mechanism (5) includes a heating sleeve (6) fitted onto the conical part (2). A heating element (7) is embedded inside the heating sleeve (6). The heating sleeve (6) is detachably connected to the bottom of the hexagonal part (3).

2. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 1, characterized in that, The top of the heating sleeve (6) is fixed with a second ring (14), and the bottom of the hexagonal part (3) is fixed with a first ring (13). The first ring (13) is fixedly sleeved on the outer wall of the conical part (2). The second ring (14) is attached to the bottom of the first ring (13). The bottom of the first ring (13) is fixed with a screw. The bottom of the screw moves through the second ring (14) and is threaded with a nut. The nut is pressed on the bottom of the second ring (14).

3. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 1, characterized in that, The heating element (7) is an electric heating wire.

4. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 1, characterized in that, The heating sleeve (6) is provided with a heat-conducting component, which includes multiple protrusions (8) fixed on the outer wall of the conical part (2). The inner wall of the heating sleeve (6) is provided with a groove (11) corresponding to the position of the protrusions (8), and the protrusions (8) are in contact with the inner wall of the groove (11).

5. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 4, characterized in that, The opposite sides of the protrusion (8) are provided with inclined surfaces (9), and the inner wall of the groove (11) fits against the inclined surfaces (9).

6. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 5, characterized in that, The protrusion (8) has a notch (10) on the side away from the conical part (2), and a protrusion (12) is fixed on the inner wall of the groove (11), with the protrusion (12) fitting against the inner wall of the notch (10).

7. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 6, characterized in that, The inner wall of the notch (10) is inclined, and the shape of the protrusion (12) is adapted to the shape of the inner wall of the notch (10).

8. The anti-clogging additive manufacturing auxiliary feeding mechanism according to claim 1, characterized in that, The outer wall of the heating sleeve (6) is fixedly fitted with an anti-slip ring (15), and the outer wall of the anti-slip ring (15) is provided with an anti-slip groove.

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