A quick-detachable 3D printer nozzle structure

Abstract

This utility model discloses a quick-disassembly 3D printer nozzle structure, relating to the field of 3D printer technology. It includes a nozzle seat, a connector, a connecting sleeve, a heater, and a nozzle head. Mounting rings are installed at both the upper and lower ends of the heater, and guide clips embedded within the mounting rings are installed on the connecting tube and the nozzle head. The mounting rings are rotatably connected to the heater via a connector. A locking block is integrally formed on the inner side of the mounting ring, and the lower end of the guide clip abuts against the connector. This utility model, through the design of the mounting rings, guide clips, and limiting wedges, allows for quick and convenient disassembly and enables bidirectional limiting of the guide clips, greatly reducing the probability of the mounting rings detaching from the guide clips due to external forces. Specifically, disassembly can only be achieved when an external force simultaneously operates the lever and rotates the mounting rings. This not only improves disassembly efficiency but also ensures stability during installation, making the overall structure more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, and in particular to a 3D printer nozzle structure that can be quickly disassembled. Background Technology

[0002] During the 3D printing process, impurities often get mixed in during production or feeding, causing nozzle clogging. Or, when printing high-hardness materials such as carbon fiber, the nozzle is worn by high-hardness particles in the material, and the printer needs to replace the nozzle frequently.

[0003] A search revealed a patent document with publication number "CN206983282U" that discloses an easily detachable 3D printer nozzle. The nozzle includes a nozzle holder, a connector, a connecting sleeve, a heater, and a nozzle head, which are sequentially connected and form a material delivery channel. The connector is attached to the nozzle holder, and the heater is connected between the connecting sleeve and the nozzle head, heating and melting the wire at the outlet of the material delivery channel. The connector and the connecting sleeve are snap-fitted together. The nozzle holder incorporates a structure that facilitates quick replacement; when the nozzle malfunctions, the entire heater can be quickly disassembled and replaced, saving replacement time.

[0004] Based on the above search and combined with existing technology, it was found that the existing heater and nozzle structure, as well as the heater and connecting tube, still use threaded connections. This connection structure requires multiple rotations during assembly and disassembly, resulting in low disassembly efficiency and some inconvenience in use. Therefore, a 3D printer nozzle structure that can be quickly disassembled is needed. Utility Model Content

[0005] The purpose of this application is to provide a quick-detachable 3D printer nozzle structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a quick-detachable 3D printer nozzle structure, including a nozzle seat, a connector, a connecting sleeve, a heater, and a nozzle head. The nozzle seat and the connector are detachably connected, and the connector and the connecting sleeve are detachably connected. The connecting sleeve includes a connecting tube body whose lower end is detachably connected to the heater. The upper end of the nozzle head is detachably connected to the heater, and the nozzle head communicates with the connector through the connecting tube body.

[0007] The heater is equipped with mounting rings at both the top and bottom ends, and guide clips are installed in the mounting rings on both the connecting pipe and the nozzle.

[0008] The mounting ring is rotatably connected to the heater via a connector. The inner side of the mounting ring has an integrally formed locking block. The lower end of the guide locking part abuts against the connector. A limit wedge is elastically installed on the top of the guide locking part. The limit wedge is used to limit the locking block, so that the locking block rotates in one direction and the bottom of the locking block abuts against the top of the guide locking part.

[0009] The guide card is also equipped with an operating component for retracting the limit wedge.

[0010] Preferably, the guide clip has a chamfered portion on the side facing the clip block that movably abuts against the lower end of the clip block, and the top of the guide clip has an installation groove, in which the limiting wedge is slidably embedded. The lower end of the limiting wedge is slidably connected to the bottom wall of the installation groove through a reset spring.

[0011] Preferably, the operating component includes a connecting rod and a paddle, the upper end of the connecting rod is fixed to the lower end of the limiting wedge, the lower end of the connecting rod slides through the guide clip, and the paddle is fixed to the lower end of the connecting rod.

[0012] Preferably, the bottom of the guide clip has a notch for accommodating the paddle, and the side wall of the paddle slides against the inner wall of the notch.

[0013] Preferably, the mounting ring has an opening for inserting the paddle, and a limiting groove is provided on one side of the opening. When one side of the locking block abuts against the vertical wall of the limiting wedge, the paddle is located in the limiting groove, and one side of the paddle abuts against the inner wall of the limiting groove.

[0014] Preferably, the connector includes a rotating ring, with the inner side of the mounting ring fixed to the outer side of the rotating ring, and the rotating ring being rotatably connected to the heater.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. In this utility model, by setting up a retaining ring, a guide clip, and a limiting wedge, when it is necessary to disassemble the spray head, the operator only needs to use the operating component to drive the limiting wedge to retract, so that the retaining block can rotate in the opposite direction, thereby separating the retaining block from the guide clip, and then pulling the spray head downwards. Disassembly is quick and convenient, and it can achieve bidirectional limiting of the guide clip, greatly reducing the probability of the retaining ring separating from the guide clip due to external force. That is, the purpose of disassembly can only be achieved when an external force simultaneously operates the operating component and rotates the retaining ring. This not only improves the disassembly efficiency, but also takes into account the stability during installation, making the overall structure more stable and reliable.

[0017] 2. In this utility model, the operator can press down on the lever to make the lever move vertically downward along the notch, and through the connecting rod, drive the limiting wedge to overcome the elastic force of the return spring and descend, thereby releasing the limiting wedge from limiting the block.

[0018] 3. In this utility model, the opening and the limiting groove facilitate the rotation of the retaining ring relative to the guide clip. The cooperation between the paddle and the limiting groove, together with the limiting wedge, forms a double limiting effect on the retaining block, preventing the retaining block from separating from the vertical wall of the limiting wedge. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0021] Figure 2 This is a schematic diagram of the heater, mounting ring, guide clip, and rotating ring structure in this embodiment;

[0022] Figure 3 This is a schematic diagram of the heater, mounting ring, and rotating ring structure in this embodiment;

[0023] Figure 4 This is a schematic diagram of the connecting tube and guide card structure in a partial cross-section of the guide card in this embodiment;

[0024] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0025] In the diagram: 1. Nozzle seat; 2. Connector; 3. Connecting sleeve; 31. Connecting tube; 4. Heater; 5. Nozzle; 6. Mounting retaining ring; 61. Opening; 611. Limiting groove; 62. Locking block; 7. Guide clip; 71. Notch; 72. Mounting groove; 8. Rotating ring; 9. Limiting wedge; 91. Return spring; 92. Connecting rod; 93. Paddle. Detailed Implementation

[0026] 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.

[0027] Example: Reference Figures 1-5 The illustrated 3D printer nozzle structure includes a nozzle seat 1, a connector 2, a connecting sleeve 3, a heater 4, and a nozzle head 5. The nozzle seat 1 is detachably connected to the connector 2, and the connector 2 is detachably connected to the connecting sleeve 3. The connecting sleeve 3 includes a connecting tube 31 whose lower end is detachably connected to the heater 4. The upper end of the nozzle head 5 is detachably connected to the heater 4, and the nozzle head 5 communicates with the connector 2 through the connecting tube 31.

[0028] The heater 4 is equipped with mounting rings 6 at both the upper and lower ends. The connecting pipe 31 and the nozzle 5 are equipped with guide clips 7 embedded in the mounting rings 6. The guide clips 7 are arc-shaped strips that fit the inner side of the mounting rings 6.

[0029] The mounting ring 6 is rotatably connected to the heater 4 via a connector. The connector includes a rotating ring 8. The inner side of the mounting ring 6 is fixed to the outer side of the rotating ring 8. The rotating ring 8 is rotatably connected to the heater 4. The inner side of the mounting ring 6 is integrally formed with a locking block 62. The lower end of the guide locking member 7 abuts against the connector. The top of the guide locking member 7 is elastically installed with a limiting wedge 9. The limiting wedge 9 is used to limit the locking block 62, so that the locking block 62 rotates in one direction. The bottom of the locking block 62 abuts against the top of the guide locking member 7.

[0030] The guide clip 7 is also equipped with an operating component for retracting the limit wedge 9.

[0031] Based on the above structure, when it is necessary to disassemble the nozzle 5, the operator only needs to use the operating component to drive the limiting wedge 9 to retract, so that the locking block 62 can rotate in the opposite direction, thereby separating the locking block 62 from the guide locking component 7, and then pulling the nozzle 5 downward. The disassembly is quick and convenient, and it can achieve bidirectional limiting of the guide locking component 7, which greatly reduces the probability of the installation ring 6 being separated from the guide locking component 7 due to external force. That is, the disassembly purpose can only be achieved when the operating component is operated and the installation ring 6 is rotated by external force. This not only improves the disassembly efficiency, but also takes into account the stability during installation, making the overall structure more stable and reliable.

[0032] Furthermore, the guide clip 7 has a chamfered part on the side facing the clip 62 that moves and abuts against the lower end of the clip 62. The top of the guide clip 7 has an installation groove 72, and the limiting wedge 9 is slidably embedded in the installation groove 72. The lower end of the limiting wedge 9 is slidably connected to the bottom wall of the installation groove 72 through a return spring 91. The return spring 91 is a compression spring.

[0033] When the locking block 62 rotates with the mounting ring 6, it first squeezes the limiting wedge block 9, causing the limiting wedge block 9 to overcome the elastic force of the return spring 91 and move downward. This allows the locking block 62 to move to the vertical wall side of the limiting wedge block 9. Then, the limiting wedge block 9 automatically resets under the elastic force of the return spring 91, which prevents the locking block 62 from rotating in the opposite direction and greatly reduces the risk of the mounting ring 6 rotating in the opposite direction and disengaging from the guide clip 7.

[0034] Furthermore, the operating components include a connecting rod 92 and a paddle 93. The upper end of the connecting rod 92 is fixed to the lower end of the limiting wedge block 9, the lower end of the connecting rod 92 slides through the guide clip 7, and the paddle 93 is fixed to the lower end of the connecting rod 92.

[0035] The bottom of the guide clip 7 has a notch 71 for accommodating the paddle 93, and the side wall of the paddle 93 slides against the inner wall of the notch 71.

[0036] The staff can press down the lever 93 to make the lever 93 move vertically down along the notch 71, and through the connecting rod 92 drive the limit wedge 9 to overcome the elastic force of the return spring 91 and descend, so as to release the limit wedge 9 from the block 62.

[0037] Furthermore, the mounting ring 6 has an opening 61 for inserting the paddle 93. A limiting groove 611 is provided on one side of the opening 61. When the side of the locking block 62 abuts against the vertical wall of the limiting wedge block 9, the paddle 93 is located in the limiting groove 611, and one side of the paddle 93 abuts against the inner wall of the limiting groove 611. The outer edge of the paddle 93 extends to the outside of the mounting ring 6.

[0038] The opening 61 and the limiting groove 611 facilitate the rotation of the retaining ring 6 relative to the guide clip 7. The cooperation between the paddle 93 and the limiting groove 611, along with the limiting wedge 9, forms a double limiting effect on the retaining block 62, preventing the retaining block 62 from separating from the vertical wall of the limiting wedge 9.

[0039] The working principle of this utility model is as follows: In daily use, when it is necessary to install the nozzle 5 or the connecting tube 31, the operator only needs to insert the nozzle 5 or the connecting tube 31 into the opening of the heater 4 and insert the lever 93 into the opening 61. Then, rotate the mounting ring 6 so that the lever 93 can be inserted into the limiting groove 611. At the same time, the lower end of the locking block 62 presses against the limiting wedge 9, so that the limiting wedge 9 overcomes the elastic force of the return spring 91 and moves downward. This allows the locking block 62 to move to the vertical wall side of the limiting wedge 9. Then, the limiting wedge 9 automatically resets under the elastic force of the return spring 91, which prevents the locking block 62 from rotating in the opposite direction. At this time, one side of the lever 93 is pressed against the inner side of the limiting groove 611, completing the connection between the nozzle 5 or the connecting tube 31 and the heater 4.

[0040] When it is necessary to disassemble the nozzle 5 or the connecting tube 31, the operator only needs to press down the lever 93, so that the lever 93 moves vertically down along the notch 71, and through the connecting rod 92, the limiting wedge 9 overcomes the elastic force of the return spring 91 and falls down, releasing the limiting wedge 9 from the limiting block 62. Then, the installation retaining ring 6 is rotated in the opposite direction, so that the retaining block 62 is separated from the guide retaining piece 7, and the lever 93 moves back to the opening 61, so that the nozzle 5 or the connecting tube 31 can be pulled out.

[0041] It should be further noted that the technical features of the nozzle seat, connector, connecting sleeve, connecting tube, heater, and spray head involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 quick-detachable 3D printer nozzle structure, comprising a nozzle seat (1), a connector (2), a connecting sleeve (3), a heater (4), and a nozzle head (5), wherein the nozzle seat (1) is detachably connected to the connector (2), the connector (2) is detachably connected to the connecting sleeve (3), the connecting sleeve (3) includes a connecting tube (31) whose lower end is detachably connected to the heater (4), the nozzle head (5) is detachably connected to the heater (4) at its upper end, and the nozzle head (5) communicates with the connector (2) through the connecting tube (31), characterized in that: The heater (4) is equipped with mounting rings (6) at both the upper and lower ends, and the connecting pipe (31) and the nozzle (5) are equipped with guide clips (7) embedded in the mounting rings (6); The mounting ring (6) is rotatably connected to the heater (4) through a connector. The mounting ring (6) has a locking block (62) integrally formed on its inner side. The lower end of the guide locking member (7) abuts against the connector. The top of the guide locking member (7) is elastically installed with a limiting wedge (9). The limiting wedge (9) is used to limit the locking block (62) so that the locking block (62) rotates in one direction. The bottom of the locking block (62) abuts against the top of the guide locking member (7). The guide clip (7) is also equipped with an operating component for driving the limit wedge (9) to retract.

2. The quick-detachable 3D printer nozzle structure according to claim 1, characterized in that: The guide clip (7) has a chamfered part on the side facing the clip (62) that moves and abuts against the lower end of the clip (62). The top of the guide clip (7) has an installation groove (72). The limiting wedge (9) is slidably embedded in the installation groove (72). The lower end of the limiting wedge (9) is slidably connected to the bottom wall of the installation groove (72) through a reset spring (91).

3. The quick-detachable 3D printer nozzle structure according to claim 2, characterized in that: The operating components include a connecting rod (92) and a paddle (93). The upper end of the connecting rod (92) is fixed to the lower end of the limiting wedge (9). The lower end of the connecting rod (92) slides through the guide clip (7). The paddle (93) is fixed to the lower end of the connecting rod (92).

4. The quick-detachable 3D printer nozzle structure according to claim 3, characterized in that: The bottom of the guide clip (7) has a notch (71) for accommodating the paddle (93), and the side wall of the paddle (93) slides against the inner wall of the notch (71).

5. The quick-detachable 3D printer nozzle structure according to claim 3, characterized in that: The mounting ring (6) has an opening (61) for inserting the paddle (93). A limiting groove (611) is provided on one side of the opening (61). When the side of the locking block (62) abuts against the vertical wall of the limiting wedge (9), the paddle (93) is located in the limiting groove (611), and one side of the paddle (93) abuts against the inner side wall of the limiting groove (611).

6. The quick-detachable 3D printer nozzle structure according to claim 1, characterized in that: The connector includes a rotating ring (8), the inner side of the mounting ring (6) is fixed to the outer side of the rotating ring (8), and the rotating ring (8) is rotatably connected to the heater (4).

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