Pressing type quick release mechanism for 3D printing spray head

Abstract

The utility model relates to the technical field of 3D printing, in particular to a 3D printing spray head pressing type quick release mechanism which comprises a heating module, a spray head, a heat dissipation block and a pressing type locking device. The heating module is provided with a through hole, the nozzle is movably inserted into the through hole, an annular clamping groove is formed in the top of the nozzle, and the heat dissipation block is installed at the top of the heating module and internally provided with a sliding groove hole and a through hole. The pressing type locking device is installed in the sliding groove hole and comprises a fixing base, a U-shaped sliding block, a locking block and a reset spring, and rapid disassembly and assembly of the spray head are achieved by pressing the locking block. The top of the nozzle is of a conical structure, the locking block is of an up-down split structure, the nozzle is sleeved with a silica gel protective sleeve, the side face of the heat dissipation block is provided with a heat dissipation fan, the top of the heat dissipation block is provided with a wire feeding device and a separable protective cover assembly, the protective cover assembly is composed of a rear cover shell, a front cover shell and a permanent magnet, and a radial flow type heat dissipation fan is installed in the front cover shell. According to the utility model, the nozzle can be efficiently and quickly disassembled and assembled, and the operation process is simplified.

Description

Technical Field

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

[0002] With the rapid development of 3D printing technology, 3D printing equipment, as the core carrier of this technology, is widely used in many fields, such as industrial manufacturing, medical, construction, artistic creation, and education and scientific research. The 3D printing nozzle, as one of the key components of the equipment, directly affects printing efficiency and cost due to its performance and ease of replacement.

[0003] Currently, most 3D printing nozzles on the market are connected to the heating module through relatively complex methods such as threaded connections, snap-fit ​​fixing, or welding. On the one hand, under prolonged high-temperature operating conditions, these connection methods are prone to causing the nozzle to loosen due to thermal expansion and contraction, affecting printing accuracy. On the other hand, when the nozzle needs to be replaced due to wear, clogging, or other issues, the operation is often cumbersome, requiring specialized tools and consuming a lot of time and manpower, reducing the efficiency of equipment use. This inconvenience is especially pronounced in mass production or urgent printing tasks.

[0004] Therefore, there is an urgent need to develop a mechanism that enables rapid disassembly and assembly of 3D printing nozzles, in order to optimize the maintenance and use process of 3D printing equipment, improve the smoothness and reliability of the overall printing operation, and meet the growing demand for efficient 3D printing. Utility Model Content

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

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

[0007] A 3D printing nozzle press-type 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; the heating module is provided with an opening at the position corresponding to the annular groove.

[0010] A heat sink is installed on the top of the heating module, and a sliding groove hole is provided near the bottom of the heat sink; the heat sink is provided with a through hole corresponding to the through hole of the heating module, which allows the top of the nozzle to pass through, and the through hole passes through the sliding groove hole.

[0011] A press-type locking device is installed in the sliding groove hole of the heat sink; used for quick assembly and disassembly of the nozzle.

[0012] The push-lock device includes:

[0013] A fixed base is located at one end of the sliding groove hole of the heat sink; an arc-shaped groove is provided on the side corresponding to the nozzle.

[0014] The U-shaped slider has a sliding fit with both the slide groove and the fixed seat; the open end of the U-shaped slider extends out of the slide groove, and the closed end of the U-shaped slider is provided with an arc-shaped groove; the arc-shaped groove of the U-shaped slider and the arc-shaped groove of the fixed seat engage with the annular groove of the nozzle to lock the nozzle together.

[0015] Locking block, installed at the open end of the U-shaped slider.

[0016] A reset spring, installed between the fixed base and the locking block, is used to drive the U-shaped slider to engage with the annular groove of the nozzle.

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

[0018] Preferably, the locking block has a split structure, with the two components locked together by screws and fixed to the open end of the U-shaped slider.

[0019] Preferably, the nozzle outer sleeve is provided with a silicone protective cover.

[0020] Preferably, a cooling fan is installed on one side of the heat sink.

[0021] Preferably, a wire feeding device is installed on the top of the heat sink; a detachable protective cover assembly is installed outside the wire feeding device.

[0022] Preferably, the protective shield assembly includes:

[0023] The rear cover is fastened to the rear side of the wire feeding device.

[0024] Front cover, which covers the front side of the wire feeding device;

[0025] The first permanent magnet has at least two parts, located on the left and right sides of the front cover respectively;

[0026] The second permanent magnet is provided in at least two, located on the left and right sides of the wire feeding device respectively;

[0027] When the front cover is placed on the wire feeding device, the first permanent magnet can be magnetically connected to the corresponding second permanent magnet.

[0028] Preferably, radial flow cooling fans are installed on both the front and rear sides inside the front cover, and the air outlets of the two radial flow cooling fans are aligned with the nozzles of the spray head.

[0029] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0030] (1) The ingenious design of the press-type locking device of this utility model allows for quick installation and removal of the nozzle by simply pressing the locking block. During installation, pressing the locking block causes the U-shaped slider to move aside, and after the nozzle is inserted, the locking block is released. The U-shaped slider engages with the nozzle slot under the action of the return spring, limiting the axial displacement and rotation of the nozzle. During removal, pressing the locking block separates the U-shaped slider from the slot, allowing the nozzle to be pulled out. In addition, the conical structure at the top of the nozzle further optimizes the installation process. There is no need to press the locking block; simply pushing the nozzle will cause the U-shaped slider to move backward and automatically reset and lock when aligned, greatly improving installation efficiency.

[0031] (2) The locking block of this utility model adopts an upper and lower split structure and is locked with screws, which facilitates the installation of the U-shaped slider and the locking block and enhances the stability of the structure. At the same time, the setting of the return spring ensures that the U-shaped slider and the nozzle slot are tightly engaged, effectively preventing the nozzle from loosening during operation.

[0032] (3) The design of the heat sink, the cooling fan, and the silicone protective sleeve on the outside of the printhead work together to achieve good heat insulation and heat dissipation. The through holes on the heat sink facilitate heat dissipation of the throat tube and prevent the printing consumables from melting prematurely; the cooling fan further enhances heat dissipation; the silicone protective sleeve provides heat insulation protection for the printhead, extends the life of the printhead, and reduces printing problems caused by temperature fluctuations.

[0033] (4) The protective cover assembly of this utility model is connected to the rear cover and the front cover by screws and magnetic attraction, which not only effectively protects the wire feeding device, but also facilitates disassembly and maintenance. Moreover, its separable design does not affect the overall operation of the equipment, thus improving the safety and service life of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0035] Figure 2 This is a cross-sectional view of the present invention;

[0036] Figure 3 This is a magnified view of a portion of point A.

[0037] Figure 4 This is a schematic diagram of the installation structure of the push-to-lock device and the heat sink.

[0038] Figure 5 This is a cross-sectional view of the heat sink groove.

[0039] Figure 6 This is a structural schematic diagram of the protective cover assembly;

[0040] Figure 7 This is a schematic diagram of the exploded structure of the protective shield assembly.

[0041] In the diagram: 1. Heating module; 2. Nozzle; 3. Press-type locking device; 3-1. Fixing base; 3-2. U-shaped slider; 3-3. Locking block; 3-4. Return spring; 4. Heat sink; 5. Cooling fan; 6. Silicone protective sleeve; 7. Wire feeding device; 8. Protective cover assembly; 8-1. Rear cover; 8-2. Front cover; 8-3. First permanent magnet; 8-4. Second permanent magnet; 9. Radial cooling fan. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Example 1:

[0046] Combined with appendix Figures 1-5 A 3D printing nozzle press-type quick-release mechanism includes a heating module 1, a nozzle 2, and a press-type 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 movably inserted.

[0047] It should be clarified that both the heating module 1 and the nozzle 2 are mature components already available on the market, and their specific structures and working principles will not be described in detail in this embodiment. This embodiment optimizes and improves the structure of the nozzle 2, 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.

[0048] A heat sink 4 is mounted on the top of the heating module 1. A sliding groove hole is provided on the heat sink 4 near the bottom. The heat sink 4 has a through hole corresponding to the through hole of the heating module 1, which allows the top of the nozzle 2 to pass through, and the through hole passes through the sliding groove hole. A press-type locking device 3 is installed in the sliding groove hole of the heat sink 4 to enable quick assembly and disassembly of the nozzle 2.

[0049] Regarding the press-type locking device 3, its specific structure includes a fixed base 3-1, a U-shaped slider 3-2, and a return spring 3-4. The fixed base 3-1 is located at one end of the sliding groove hole of the heat sink 4; an arc-shaped groove is provided on the side corresponding to the nozzle 2. The U-shaped slider 3-2 is slidably engaged with both the sliding groove hole and the fixed base 3-1; the open end of the U-shaped slider 3-2 extends out of the sliding groove hole, and the closed end of the U-shaped slider 3-2 is provided with an arc-shaped retaining groove; the arc-shaped retaining groove of the U-shaped slider 3-2 and the arc-shaped groove of the fixed base 3-1 engage with the annular retaining groove of the nozzle 2, together securing the nozzle 2; a locking block 3-3 is installed at the open end of the U-shaped slider 3-2. The locking block 3-3 is used to prevent the U-shaped slider 3-2 from coming out of the sliding groove hole.

[0050] A return spring 3-4 is installed between the fixed base 3-1 and the locking block 3-3. Its function is to drive the U-shaped slider 3-2 to engage with the slot of the nozzle 2.

[0051] When it is necessary to disassemble the nozzle 2, the operator can do so by pressing the locking block 3-3. At this time, the locking block 3-3 will drive the U-shaped slider 3-2 to separate from the slot of the nozzle 2, and then the nozzle 2 can be pulled out downwards, which makes it easier to replace the nozzle 2. The whole process is simple and quick.

[0052] When installing nozzle 2, the operator first presses the locking block 3-3, which drives the U-shaped slider 3-2 to move and make room. Then, nozzle 2 is inserted from the bottom of heating module 1 until the nozzle 2's slot aligns with the locking block. At this point, the locking block 3-3 is released, and the U-shaped slider 3-2 automatically slides back to its original position under the action of the return spring 3-4, causing the locking block of the U-shaped slider 3-2 to engage with the nozzle 2's slot, thus effectively limiting the axial displacement and rotation of nozzle 2.

[0053] Furthermore, the top of the nozzle 2 has a conical structure, meaning that when installing the nozzle 2, the operator does not need to press the locking block 3-3. Simply pushing the nozzle 2 upwards will cause the conical structure at the top of the nozzle 2 to automatically retract and move aside. When the annular groove of the nozzle 2 aligns with the U-shaped slider 3-2, the U-shaped slider 3-2 will automatically slide and reset under the action of the return spring 3-4, thereby locking the nozzle 2.

[0054] Example 2:

[0055] Combined with appendix Figure 3 To be continued Figure 4 As shown, the 3D printing nozzle press-type quick-release mechanism involved in this embodiment is an improvement on the first embodiment. The locking block 3-3 is a split structure, with the two components locked together by screws and fixed to the open end of the U-shaped slider 3-2. This facilitates the installation and operation of the U-shaped slider 3-2 and the locking block 3-3.

[0056] Example 3:

[0057] Combined with appendix Figure 1 , 2 As shown in Figures 6 and 7, the 3D printing nozzle press-type quick-release mechanism involved in this embodiment is further optimized based on Embodiment 1 or Embodiment 2. Specifically, a silicone protective sleeve 6 is provided on the outer side of the nozzle 2, which mainly serves to provide thermal insulation.

[0058] In addition, a cooling fan 5 is installed on one side of the heat sink 4. A throat tube is connected to the top of the nozzle 2. The heat sink 4 is designed with a through hole through which the throat tube passes, mainly for heat dissipation of the throat tube to prevent premature melting of the printing consumables. A filament feeding device 7 is installed on the top of the heat sink 4. Since the filament feeding device 7 is a commercially available device, its specific structure and working principle will not be described in detail in this embodiment. The main function of the filament feeding device 7 is to transport the printing consumables, allowing them to pass smoothly through the throat tube into the nozzle 2, and to be extruded from the nozzle 2 after melting. To protect the filament feeding device 7, a detachable protective cover assembly 8 is installed on its outer side, as shown in the attached figure. Figure 6 and 7 As shown.

[0059] Specifically, the protective cover assembly 8 consists of a rear cover 8-1 and a front cover 8-2. The rear cover 8-1 is fastened to the rear side of the wire feeding device 7 by screws. The front cover 8-2 covers the front side of the wire feeding device 7. First permanent magnets 8-3 are fixedly connected to the left and right sides of the inner surface of the front cover 8-2, while second permanent magnets 8-4 are fixedly connected to the left and right sides of the wire feeding device 7. When the front cover 8-2 is placed on the wire feeding device 7, the first permanent magnets 8-3 can magnetically attract and connect with the corresponding second permanent magnets 8-4, thereby achieving stable fixation of the front cover 8-2.

[0060] 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 press-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; the heating module (1) is provided with an opening at the position corresponding to the annular groove; The heat sink (4) is installed on the top of the heating module (1), and a sliding groove hole is provided near the bottom of the heat sink (4); the heat sink (4) is provided with a through hole at the position corresponding to the through hole of the heating module (1) so that the top of the nozzle (2) can pass through, and the through hole passes through the sliding groove hole. A press-type locking device (3) is installed in the sliding groove hole of the heat sink (4); used for quick disassembly and assembly of the nozzle (2). The press-type locking device (3) includes: The fixing seat (3-1) is located at one end of the sliding groove hole of the heat sink (4); an arc-shaped groove is provided on the side corresponding to the nozzle (2); The U-shaped slider (3-2) is slidably fitted with the groove hole and the fixed seat (3-1); the open end of the U-shaped slider (3-2) extends out of the groove hole, and the closed end of the U-shaped slider (3-2) is provided with an arc-shaped groove; the arc-shaped groove of the U-shaped slider (3-2) and the arc-shaped groove of the fixed seat (3-1) engage with the annular groove of the nozzle (2) to jointly clamp the nozzle (2). Lock block (3-3) is installed at the open end of U-shaped slider (3-2); The reset spring (3-4) is installed between the fixed base (3-1) and the locking block (3-3) to drive the U-shaped slider (3-2) to engage with the annular groove of the nozzle (2).

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

3. The 3D printing nozzle press-type quick-release mechanism as described in claim 1, characterized in that: The locking block (3-3) is a split structure, with the two components locked together by screws and fixed to the open end of the U-shaped slider (3-2).

4. The 3D printing nozzle press-type quick-release mechanism as described in claim 1, characterized in that: The nozzle (2) is covered with a silicone protective sleeve (6).

5. The 3D printing nozzle press-type quick-release mechanism as described in claim 1, characterized in that: A cooling fan (5) is installed on one side of the heat sink (4).

6. The 3D printing nozzle press-type quick-release mechanism as described in claim 5, characterized in that: A wire feeding device (7) is installed on the top of the heat sink (4); a detachable protective cover assembly (8) is installed outside the wire feeding device (7).

7. The 3D printing nozzle press-type quick-release mechanism as described in claim 6, characterized in that: The protective shield assembly (8) includes: The rear cover (8-1) is fastened to the rear side of the wire feeding device (7); The front cover (8-2) is installed on the front side of the wire feeding device (7); The first permanent magnet (8-3) has at least two parts, located on the left and right sides of the front cover (8-2); The second permanent magnet (8-4) is provided in at least two parts, located on the left and right sides of the wire feeding device (7); When the front cover (8-2) is placed on the wire feeding device (7), the first permanent magnet (8-3) can be magnetically connected to the corresponding second permanent magnet (8-4).

8. The 3D printing nozzle press-type quick release mechanism of claim 7, characterized in that: Both sides of the front cover (8-2) are provided with radial flow cooling fans (9), and the outlets of the two radial flow cooling fans (9) are aligned with the nozzles of the nozzle (2).

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