3D printing spray head clamping hook type quick release mechanism

Abstract

A clamping hook type quick release mechanism for a 3D printing nozzle relates to the technical field of 3D printing and comprises a heating module, a nozzle, a heat dissipation block and a clamping hook type locking device. The nozzle is movably inserted into the through hole, and an annular clamping groove is formed in the top of the through hole and penetrates out of the heating module. The radiating block is arranged on the top of the heating module, and one side is provided with a slot. The clamping hook type locking device comprises a clamping hook, a pin shaft and a reset spring. The bottom of the connecting part is provided with a hook head matched with the nozzle clamping groove, and the functional part is provided with a pressing handle. The pin shaft enables the clamping hook to be hinged to the heat dissipation block, and the reset spring drives the hook head to automatically reset and clamp. The nozzle can be quickly disassembled and assembled, the replacement efficiency is improved, the heat dissipation block has a heat dissipation function, and consumables are prevented from being melted in advance. Complex tools and tedious steps are not needed, the operation difficulty is reduced, the error rate is reduced, stability and reliability are high, and the service life is effectively prolonged.

Description

Technical Field

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

[0002] With the rapid development of 3D printing technology, it has been widely used in many fields such as industrial manufacturing, medical care, construction, and education. One of the core components of 3D printing equipment is the nozzle, whose performance directly affects printing quality, efficiency, and the range of applicable printing materials.

[0003] In traditional 3D printing equipment, the connection between the nozzle and the heating module is mostly a fixed structure, such as through threaded connections or interference fits. This fixed connection has several drawbacks. First, the installation and disassembly process is cumbersome, requiring tools and consuming significant time and manpower. This is especially true when the nozzle needs frequent replacement due to wear or clogging, greatly reducing the equipment's efficiency. Second, it cannot meet the needs of different printing tasks for rapid nozzle replacement. For example, when it is necessary to change to a nozzle of different diameter, material, or model to adapt to different printing materials or achieve specific printing effects, the complex disassembly and assembly process can significantly interrupt the printing process, affecting production continuity.

[0004] While some existing printheads offer some ease of installation and removal, in practice, the connection may not be secure enough, potentially causing the printhead to loosen during printing, thus affecting printing accuracy or even leading to printing failure. Furthermore, due to limitations in traditional heat dissipation designs, printing filaments are prone to premature melting as they pass through the printhead. This not only clogs the printhead and affects printing smoothness but also further reduces print quality and equipment stability.

[0005] Therefore, developing a quick-release mechanism for 3D printing nozzles that enables rapid disassembly and assembly, secure locking, effective heat dissipation, and optimized spatial layout has become a key issue that urgently needs to be addressed in the field of 3D printing technology. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model discloses a 3D printing nozzle hook-type quick-release mechanism.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] A 3D printing nozzle hook-type quick-release mechanism includes:

[0009] The heating module has a through hole;

[0010] The nozzle is movably connected to the heating module; the top of the nozzle tube is provided with an annular groove; and the top of the nozzle extends out of the heating module.

[0011] A heat sink is installed on the top of the heating module, and a slot is provided on one side;

[0012] A hook-type locking device is installed in the slot of the heat sink; used for quick installation and removal of the nozzle.

[0013] The hook-type locking device includes:

[0014] The hook has a right-angled structure, with one side being a connecting part and the other side being a functional part; the bottom of the connecting part is provided with a hook head that can be engaged with the annular groove of the nozzle; the functional part is provided with a pressing handle that extends out of the heat sink slot;

[0015] A pin is installed on the bent part of the hook so that the hook and the heat sink are hinged to each other.

[0016] A return spring is installed between the heat sink and the functional part of the hook, and is used to drive the hook head of the hook to engage with the annular groove of the nozzle.

[0017] Preferably, the top of the nozzle has a pointed conical shape.

[0018] Preferably, the hook function part is provided with a limiting boss at the position corresponding to the reset spring.

[0019] Preferably, the heating module has a T-shaped structure.

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

[0021] (1) In this utility model, an annular groove is provided on the top of the nozzle tube, which cooperates with the hook to realize the quick disassembly and assembly of the nozzle, greatly improving the replacement efficiency, saving maintenance time, and reducing downtime losses, which is crucial for improving production efficiency. The setting of the heat sink not only provides installation space for the hook-type locking device, but its through hole design can also dissipate heat from the printing consumables, preventing the consumables from melting prematurely and ensuring stable printing quality. In the hook-type locking device, the right-angle structure of the hook is ingenious, the hook head of the connecting part is precisely engaged with the annular groove of the nozzle, the pressing handle of the functional part is easy for the operator to control directly, and the hook is hinged to the heat sink with the pin to realize flexible deflection. With the help of the return spring, the hook head is automatically reset and engaged. The entire disassembly and assembly process is simple and quick, without complicated tools and cumbersome steps, reducing the difficulty of operation and the error rate. In addition, the limiting boss design of the return spring effectively prevents the spring from accidentally falling off, enhances the stability and reliability of the device, and extends its service life.

[0022] (2) This utility model makes the top of the nozzle into a pointed cone shape, which further optimizes the installation process. The operator does not need to manually turn the pressing handle. When the pointed cone structure contacts the hook head, it automatically forces the hook to deflect and move. Then the reset spring resets the hook to achieve self-locking, which greatly simplifies the nozzle installation operation, improves the user experience, and is suitable for fast-paced production environments. It brings significant convenience and efficiency to the practical application of 3D printing technology. 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 schematic diagram of the structure of this utility model;

[0025] Figure 3 This is a cross-sectional view of the present invention;

[0026] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0027] In the diagram: 1. Heating module; 2. Nozzle; 3. Hook-type locking device; 3-1. Hook; 3-2. Pin; 3-3. Return spring; 3-4. Limiting boss; 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 1-4 A 3D printing nozzle quick-release mechanism with a hook includes a heating module 1, a nozzle 2, a heat sink 4, and a hook-type locking device 3. The heating module 1 has a through hole, and the nozzle 2 can be inserted into the through hole of the heating module 1 for a movable connection. It should be noted that both the heating module 1 and the nozzle 2 are existing mature product components on the market, and their detailed structures and working principles will not be elaborated in this embodiment. It is worth mentioning that the heating module 1 has an overall T-shaped structure, which effectively reduces space occupation.

[0033] This embodiment focuses on optimizing and improving the structure of the nozzle 2. Specifically, an annular groove is provided at the top of the nozzle 2 tube, and the heating module 1 extends through the top of the nozzle 2. That is, when the nozzle 2 and the heating module 1 are inserted into place, the annular groove at the top of the nozzle 2 tube will be exposed.

[0034] A heat sink 4 is mounted on the top of the heating module 1. A slot is provided on one side of the heat sink 4, and a hook-type locking device 3 is installed inside the slot. Its main function is to quickly detach and install the printhead 2. In addition, the heat sink 4 is also designed with through holes through which printing consumables can pass. Its core function is to dissipate heat from the printing consumables to prevent them from melting prematurely.

[0035] Furthermore, the hook-type locking device 3 includes a hook 3-1, a pin 3-2, and a return spring 3-3. The hook 3-1 has a right-angled structure, with one side being the connecting part and the other the functional part. A hook head is provided at the bottom of the connecting part, which can engage with the annular groove of the nozzle 2. The functional part has a pressing handle that extends out of the slot of the heat sink 4. The pin 3-2 is installed on the bent part of the hook 3-1, meaning the hook 3-1 is hinged to the heat sink 4 via the pin 3-2. By moving the pressing handle, the hook 3-1 can be deflected around the pin 3-2.

[0036] A return spring 3-3 is installed between the heat sink 4 and the functional part of the hook 3-1. The function of the return spring 3-3 is to drive the hook head of the hook 3-1 to engage with the annular groove of the nozzle 2. When it is necessary to disassemble the nozzle 2, the operator can do so by turning the pressing handle. At this time, the pressing handle will drive the hook head of the hook 3-1 to separate from the annular groove of the nozzle 2, and then the nozzle 2 can be pulled out downwards, which facilitates the replacement of the nozzle 2. The entire disassembly and replacement process is very simple and quick.

[0037] When installing nozzle 2, the operator should first press the handle. The pressure on the handle will cause the hook of latch 3-1 to deflect, thus creating space. Next, insert nozzle 2 from the bottom of heating module 1, continuing until the annular groove of nozzle 2 aligns with the hook. At this point, release the handle. Under the action of the return spring 3-3, latch 3-1 will automatically slide back to its original position, allowing the hook of latch 3-1 to engage with the annular groove of nozzle 2, effectively limiting the axial displacement and rotation of nozzle 2.

[0038] Example 2:

[0039] Combined with appendix Figure 4 The diagram illustrates a 3D printing nozzle hook-type quick-release mechanism, an improvement upon Embodiment 1, primarily in that the top of the nozzle 2 adopts a pointed conical structure. This eliminates the need for the operator to manipulate the pressing handle during nozzle 2 installation. The specific operation is as follows: the nozzle 2 is inserted through the bottom of the heating module 1. When the pointed conical structure at the top of the nozzle 2 contacts the hook of the hook 3-1, it forces the hook 3-1 to deflect. Subsequently, the nozzle 2 continues to move upwards, at which point the hook 3-1 resets under the action of the return spring 3-3, thus achieving a self-locking function and greatly facilitating the installation of the nozzle 2.

[0040] Furthermore, a limiting boss 3-4 is provided at the position of the hook 3-1 corresponding to the return spring 3-3. That is, the limiting boss 3-4 can be inserted into the center hole of the return spring 3-3. In this way, the return spring 3-3 is limited, thereby effectively preventing the return spring 3-3 from accidentally falling off.

[0041] 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 hook type 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 top of the nozzle (2) extends out of the heating module (1). A heat sink (4) is installed on the top of the heating module (1), and a slot is provided on one side; A hook-type locking device (3) is installed in the slot of the heat sink (4); used for quick assembly and disassembly of the nozzle (2); The hook-type locking device (3) includes: The hook (3-1) has a right-angle structure, with one side being a connecting part and the other side being a functional part; the bottom of the connecting part is provided with a hook head that can be engaged with the annular groove of the nozzle (2); the functional part is provided with a pressing handle that extends out of the slot of the heat dissipation block (4); The pin (3-2) is installed on the bent part of the hook (3-1) so that the hook (3-1) and the heat sink (4) are hinged to each other. The reset spring (3-3) is installed between the heat sink (4) and the functional part of the hook (3-1) to drive the hook head of the hook (3-1) to engage with the annular groove of the nozzle (2).

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

3. The 3D printing nozzle hook-type quick-release mechanism as described in claim 1, characterized in that: The hook (3-1) functional part is provided with a limiting boss (3-4) at the position corresponding to the reset spring (3-3).

4. The 3D printing nozzle hook-type quick-release mechanism as described in claim 1, characterized in that: The heating module (1) has a T-shaped structure.

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