3D printing nozzle elastic quick-release mechanism

Abstract

A kind of 3D printing nozzle elastic quick-release mechanism, it is related to 3D printing technical field, including heating module, nozzle and self-locking device;Heat dissipation block is installed on the top of heating module, installation hole is equipped in the corresponding position, self-locking device is installed in this, and it is cooperated with the quick disassembly and assembly of nozzle annular clamping groove.Self-locking device includes self-locking plate that is movably inserted in the installation hole of heat dissipation block, and limiting boss that is equipped in the installation hole is adapted;There are also elastic locking piece and locking spring.The utility model installs nozzle, and the top of nozzle contacts elastic locking piece and makes it deform to give way, and it is automatically reset after being in position;When disassembling, press self-locking plate to make elastic locking piece separate from clamping groove.Its advantage is that installation disassembly is simple and fast, without complex tool, improve nozzle replacement efficiency, reduce printing equipment downtime, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a flexible quick-release mechanism for a 3D printing nozzle. Background Technology

[0002] In existing technologies, the connection between the 3D printing nozzle and the heating module is mostly achieved through threaded connections or snap-fit ​​connections. While threaded connections provide a tight fixation, the disassembly and assembly process is cumbersome, requiring tools to rotate the threads, which is time-consuming and laborious. Frequent disassembly and assembly can also damage the threads, affecting the reliability of the connection. Although snap-fit ​​connections are relatively easy to assemble and disassemble, the snap-fit ​​structure is prone to a decrease in clamping force due to material fatigue or wear after long-term use. This can cause the nozzle to loosen during printing, affecting printing accuracy. Especially in high-precision printing tasks, even slight loosening can cause defects in the printed parts.

[0003] In addition, the connection between some printheads and heating modules lacks an effective elastic compensation mechanism, making it difficult to adapt to dimensional deviations caused by errors in printhead processing accuracy. This may result in uneven force distribution or poor local contact after printhead installation, which can easily affect printing accuracy.

[0004] To address the shortcomings of existing nozzle connection methods, there is an urgent need to design a new connection mechanism that allows for quick assembly and disassembly of the nozzle and heating module while ensuring a stable and reliable connection, in order to meet the application requirements of 3D printing equipment in high-precision and high-efficiency printing scenarios. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a 3D printing nozzle elastic quick-release mechanism.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] A 3D printing nozzle elastic quick-release mechanism includes:

[0008] The heating module has a through hole;

[0009] The nozzle is movably connected to the heating module; the top of the nozzle tube is provided with an annular groove, and the annular groove can extend out of the heating module.

[0010] A heat sink is installed on top of the heating module; the heat sink has mounting holes at the positions corresponding to the annular slots of the nozzles.

[0011] The self-locking device is installed at the mounting hole of the heat sink; the self-locking device corresponds to the annular groove of the nozzle and is used for quick installation and removal of the nozzle.

[0012] The self-locking device includes:

[0013] The self-locking plate is movably inserted into the mounting hole of the heat sink. The surface of the self-locking plate has a slot that allows the top of the nozzle to move through, and the mounting hole has a limiting boss that corresponds to and matches the slot of the self-locking plate. One end of the self-locking plate can protrude out of the mounting hole.

[0014] The elastic locking piece is located in the slot at one end of the self-locking plate that protrudes from the mounting hole. It is an upward-curving spring structure. When the elastic locking piece enters the annular groove of the nozzle, it locks the nozzle.

[0015] The locking spring is installed in the slot of the self-locking plate through the mounting hole, and one end of the locking spring abuts against the limiting boss. When in use, the elastic locking piece is engaged with the annular groove of the nozzle.

[0016] Preferably, the self-locking plate has a U-shaped structure and a locking block is installed at the open end.

[0017] Preferably, the open end of the self-locking plate is provided with a hook, and the self-locking plate and the locking block are engaged by the hook.

[0018] Preferably, the top of the nozzle has a conical structure.

[0019] Preferably, the raised end of the elastic locking piece is provided with an arc-shaped groove.

[0020] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0021] (1) The heating module and the printhead of this utility model adopt a movable plug-in method. With the ingenious structure of the self-locking device, when the printhead is installed, the top of the printhead contacts the elastic locking piece, and the elastic locking piece automatically deforms to make way. After the printhead is installed in place, the elastic locking piece automatically resets and enters the annular slot of the printhead to lock the printhead. When disassembling, press one end of the self-locking plate to drive the elastic locking piece to separate from the printhead slot, and the printhead can be pulled out. The whole process is simple and quick to operate, without the need for complicated tools and cumbersome steps, which greatly improves the efficiency of printhead replacement, reduces the downtime of printing equipment, and improves work efficiency.

[0022] (2) This utility model can improve the stability and reliability of printhead installation. The elastic locking piece with its upward-curving spring structure provides an upward pushing force to the printhead, keeping it moving upward and effectively preventing loosening after installation due to printhead machining accuracy issues. The arc-shaped groove at the upturned end of the elastic locking piece can fit into the printhead's annular groove, expanding the contact area with the annular groove and further enhancing locking reliability. This ensures stable installation of the printhead during printing, reducing printing errors, material blockage, and other quality problems that may result from printhead loosening, thus improving printing quality and stability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 This is a schematic diagram of the exploded structure of a self-locking device;

[0026] Figure 4 This is a partial structural diagram of the elastic locking plate.

[0027] In the diagram: 1. Heating module; 2. Nozzle; 3. Self-locking device; 3-1. Elastic locking piece; 3-2. Self-locking plate; 3-3. Locking block; 3-4. Locking spring; 4. Heat sink. Detailed Implementation

[0028] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element 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 this utility model.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] Example 1:

[0032] Combined with appendix Figures 1-2 4. A 3D printing nozzle elastic quick-release mechanism, comprising a heating module 1, a nozzle 2, and a self-locking device 3. Specifically, the heating module 1 is designed with a through hole, and the nozzle 2 can correspond to the heating module 1 and be connected in a movable plug-in manner.

[0033] It should be noted that both the heating module 1 and the nozzle 2 are readily available and commercially mature components, and their specific structures and working principles will not be described in detail in this embodiment. This embodiment focuses on optimizing and improving the structure of the nozzle 2, by providing an annular groove at the top of the nozzle 2 tube. When the nozzle 2 is inserted into the heating module 1, the annular groove of the nozzle 2 allows the heating module 1 to protrude.

[0034] A heat sink 4 is mounted on the top of the heating module 1. The heat sink 4 has a mounting hole near its bottom. A through hole is provided on the heat sink 4 corresponding to the through hole in the heating module 1, through which the top of the nozzle 2 can pass, and the through hole extends through the mounting hole. A self-locking device 3 is installed inside the mounting hole of the heat sink 4, which enables quick assembly and disassembly of the nozzle 2.

[0035] The self-locking device 3 comprises an elastic locking piece 3-1, a self-locking plate 3-2, and a locking spring 3-4. The self-locking plate 3-2 is movably inserted into the mounting hole of the heat sink 4, and its surface has a slot, allowing the top of the nozzle 2 to pass through. The mounting hole has a limiting boss that matches the slot of the self-locking plate 3-2, and one end of the self-locking plate 3-2 can protrude from the mounting hole. When the nozzle 2 is not installed, the other end of the self-locking plate 3-2 abuts against the limiting boss, preventing it from dislodging from the mounting hole. This embodiment allows for the installation of the self-locking plate 3-2 before setting the limiting boss, or for the heat sink 4 to be split vertically at the mounting hole to form a separate structure, with the limiting boss securely connected to a part of the separate structure, and the heat sink 4 assembled after the self-locking plate 3-2 is installed. The self-locking plate 3-2 slides in accordance with the mounting hole and the elastic locking piece 3-1.

[0036] The limiting boss serves two purposes: firstly, it prevents the self-locking plate 3-2 from falling off; secondly, through the sliding cooperation between the limiting boss and the slotted self-locking plate 3-2, it can improve the installation accuracy of the self-locking plate 3-2, ensuring that it can only slide in a straight line and avoid large-scale shaking.

[0037] The elastic locking piece 3-1 is located in the slot at the end of the self-locking plate 3-2 that protrudes from the mounting hole, and it is an upward-curving spring structure. When the elastic locking piece 3-1 enters the annular groove of the nozzle 2, the nozzle 2 can be locked. When installing the nozzle 2, it only needs to be inserted from the bottom of the heating module 1. When the top of the nozzle 2 contacts the elastic locking piece 3-1, the elastic locking piece 3-1 will automatically deform and make way. After the nozzle 2 is installed in place, the elastic locking piece 3-1 will automatically reset and enter the annular groove of the nozzle 2, thereby locking the nozzle 2.

[0038] Because the elastic locking piece 3-1 is tilted upwards, it provides an upward thrust to the nozzle 2, keeping the nozzle 2 moving upwards. This prevents the nozzle 2 from becoming loose after installation due to manufacturing inaccuracies, effectively improving the stability of the nozzle 2.

[0039] Furthermore, the raised end of the elastic locking piece 3-1 is provided with an arc-shaped groove, which can be locked in the annular groove of the nozzle 2, thereby increasing the contact area between the elastic locking piece 3-1 and the annular groove of the nozzle 2 and further improving the reliability of locking.

[0040] A locking spring 3-4 is installed in the slot at one end of the self-locking plate 3-2 that protrudes from the mounting hole, with one end abutting against the limiting boss. The function of the locking spring 3-4 is to keep the elastic locking piece 3-1 engaged with the annular groove of the nozzle 2.

[0041] When it is necessary to disassemble the nozzle 2, the operator only needs to press the end of the self-locking plate 3-2 that protrudes from the mounting hole. At this time, the self-locking plate 3-2 drives the elastic locking piece 3-1 to separate from the slot of the nozzle 2, and then the nozzle 2 can be pulled out downwards for easy replacement. The whole process is simple and quick.

[0042] Furthermore, the top of the nozzle 2 is designed with a conical structure. When installing the nozzle 2, the operator does not need to press the self-locking plate 3-2, but only needs to push the nozzle 2 upwards. The conical structure at the top of the nozzle 2 will force the elastic locking piece 3-1 to automatically deform and move out of position. When the annular groove of the nozzle 2 aligns with the self-locking plate 3-2, the elastic locking piece 3-1 automatically resets, thereby locking the nozzle 2.

[0043] Example 2:

[0044] Combined with appendix Figure 3 As shown, this embodiment improves the elastic quick-release mechanism of the 3D printing nozzle based on Embodiment 1. The self-locking plate 3-2 has a U-shaped structure, and a locking block 3-3 is installed at its open end. The heat sink 4 and the limiting boss are designed as an integral structure. During installation, first insert the open end of the self-locking plate 3-2 into the mounting hole of the heat sink 4, then install the locking block 3-3 at the open end of the self-locking plate 3-2, and install a locking spring 3-4 between the locking block 3-3 and the limiting boss. This design simplifies the structure and facilitates the assembly operation of the self-locking device 3.

[0045] Furthermore, the open end of the self-locking plate 3-2 is provided with a hook, and the self-locking plate 3-2 and the locking block 3-3 are engaged by the hook. This design further improves the ease of assembly and operation of the self-locking device 3.

[0046] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A 3D printing nozzle elastic quick-release mechanism, characterized in that, include: Heating module (1), which has a through hole; The nozzle (2) is movably connected to the heating module (1); the top of the nozzle (2) is provided with an annular groove, and the annular groove can pass through the heating module (1). Heat sink (4) is installed on top of heating module (1); the heat sink (4) has mounting holes at the position of the annular slot of nozzle (2); The self-locking device (3) is installed at the mounting hole of the heat sink (4); the self-locking device (3) is matched with the annular groove of the nozzle (2) for quick disassembly and assembly of the nozzle (2). The self-locking device (3) includes: The self-locking plate (3-2) is movably inserted into the mounting hole of the heat sink (4). The surface of the self-locking plate (3-2) is provided with a slot that allows the top of the nozzle (2) to move through, and the mounting hole is provided with a limiting boss that corresponds to and matches the slot of the self-locking plate (3-2). One end of the self-locking plate (3-2) can pass through the mounting hole. The elastic locking piece (3-1) is located in the slot at one end of the self-locking plate (3-2) through the mounting hole. It is an upward-curving spring piece structure. When the elastic locking piece (3-1) enters the annular groove of the nozzle (2), it locks the nozzle (2). The locking spring (3-4) is installed in the slot at one end of the self-locking plate (3-2) through the mounting hole, and one end of the locking spring (3-4) abuts against the limiting boss. When in use, the elastic locking piece (3-1) and the annular groove of the nozzle (2) are engaged.

2. The 3D printing nozzle elastic quick-release mechanism as described in claim 1, characterized in that: The self-locking plate (3-2) has a U-shaped structure and a locking block (3-3) is installed at the open end.

3. The 3D printing nozzle elastic quick-release mechanism as described in claim 2, characterized in that: The self-locking plate (3-2) has a hook at its open end, and the self-locking plate (3-2) and the locking block (3-3) are engaged by the hook.

4. The 3D printing nozzle elastic quick-release mechanism as described in claim 1, characterized in that: The top of the nozzle (2) has a conical structure.

5. The 3D printing nozzle elastic quick-release mechanism as described in claim 1, characterized in that: The elastic locking piece (3-1) has an arc-shaped groove at one of its raised ends.

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