Air inlet leakage-proof structure of shielding gas device for 3D printer
By designing the connection components and limit components at the connection between the 3D printer's intake pipeline and the protective gas pipeline, the problem of loose air leakage at the connection is solved, and the effect of air leakage is achieved.
Patent Information
- Application Number
- CN202422076315.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The connection between the air intake pipeline and the protective gas pipeline of the existing 3D printer lacks a limit structure, which is prone to loosening when pulled and causing air leakage.
A leak-proof structure including a connecting assembly and a limiting assembly is designed. The extension plate and the trapezoidal block are moved by rotating the locking nut, and the connection is limited by the cooperation of the barrier plate and the threaded rod to prevent loosening and air leakage.
It effectively prevents loosening and leaking at the connection between the intake pipeline and the protective gas pipeline, improves the practicality of the structure, and ensures that the gas does not leak.
Smart Images
Figure CN223043670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air inlet leakage prevention of a protective gas device for a 3D printer, in particular to an air inlet leakage prevention structure of a protective gas device for a 3D printer. Background Technique
[0002] 3D printing is a process of manufacturing parts or physical objects by material accumulation based on three-dimensional model data. The metal parts formed by SLM in 3D printing technology have a high density, up to more than 90%, and at the same time, mechanical property indexes such as tensile strength are superior to those of castings, and even can reach the level of forgings. The protective gas system is an important part of SLM forming in 3D printing technology.
[0003] At present, the intake pipeline of a 3D printer and the pipeline of the protective gas are generally connected by a quick-insert structure or a locknut structure. When the pipeline is pulled, due to the lack of a limiting structure at its connection, it is easy to loosen, and then air leakage will occur, affecting the use. Therefore, an air inlet leakage prevention structure of a protective gas device for a 3D printer is proposed to solve the above-mentioned technical problems. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides an air inlet leakage prevention structure of a protective gas device for a 3D printer, which has the advantages of being able to limit the connection of the pipeline, etc., and solves the problem that the intake pipeline of the current 3D printer and the pipeline of the protective gas are generally connected by a quick-insert structure or a locknut structure. When the pipeline is pulled, due to the lack of a limiting structure at its connection, it is easy to loosen, and then air leakage will occur, affecting the use.
[0006] (2) Technical Solutions
[0007] To achieve the purpose of being able to limit the connection of the pipeline, the utility model provides the following technical solution: an air inlet leakage prevention structure of a protective gas device for a 3D printer, including an intake pipe and a pipeline. The pipeline is located on the right side of the intake pipe. A locking nut is provided on the left side wall of the pipeline. A connecting plate is provided outside the pipeline. A fixing ring is provided outside the intake pipe. Connecting components extending to the inside of the fixing ring are provided at the top and bottom of the connecting plate. Limiting components are provided on the inner top wall and inner bottom wall of the fixing ring and are externally engaged with the connecting components;
[0008] The connecting component includes a positioning block. Positioning blocks are provided at both the top and bottom of the connecting plate. An extension plate with one end extending into the interior of the fixed ring is provided on the right side wall of the positioning block. A baffle is provided on the right side wall of the extension plate. A compression spring sleeved outside the extension plate is provided between the left side wall of the baffle and the right side wall of the positioning block. Trapezoidal blocks are provided on the opposite sides of the upper and lower extension plates;
[0009] The limiting component includes a rectangular groove. Rectangular grooves are provided on both the inner top wall and the inner bottom wall of the fixed ring. A blocking partition is provided on the right side inner wall of the rectangular groove. Sliders are provided on the opposite sides of the upper and lower blocking partitions. Threaded rods are provided on the opposite sides of the upper and lower sliders. The opposite sides of the upper and lower threaded rods respectively extend to the top and bottom of the fixed ring. Both of the threaded rods are connected to the interior of the fixed ring.
[0010] Preferably, an external thread adapted to the locking nut is provided on the outside of the air inlet pipe.
[0011] Preferably, a sealing rubber pad closely attached to the left side wall of the locking nut is provided on the outside of the air inlet pipe.
[0012] Preferably, chutes adapted to the movement tracks of the sliders are provided on the opposite sides of the upper and lower blocking partitions.
[0013] Preferably, circular rotating disks are fixedly connected to the opposite sides of the upper and lower threaded rods.
[0014] (III) Beneficial Effects
[0015] Compared with the prior art, the present utility model provides an air inlet leak-proof structure for a protective gas device of a 3D printer, having the following beneficial effects:
[0016] For this air inlet leak-proof structure of the protective gas device of the 3D printer, by providing a connecting component and a limiting component, during connection, the operator rotates the locking nut to connect it to the outside of the air inlet pipe. At this time, the two extension plates drive the two trapezoidal blocks to move into the interior of the fixed ring. Then, rotate the upper and lower threaded rods to drive the sliders to move. With the cooperation of the sliders, the two blocking partitions are deflected around their joints with the rectangular grooves. Through the cooperation of the blocking partitions and the trapezoidal blocks, the connection between the locking nut and the air inlet pipe is limited, avoiding loosening and air leakage caused by pulling, improving the practicality of the structure. By providing a sealing rubber pad, it can prevent the protective gas from leaking from the connection between the air inlet pipe and the locking nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model;
[0018] Figure 2 is a schematic diagram of the air inlet pipe of the present utility model;
[0019] Figure 3 For the present utility model Figure 1 is an enlarged schematic view of part A in it.
[0020] In the figure: 1, intake pipe; 2, pipeline; 3, lock nut; 4, connecting plate; 5, fixing ring; 6, connecting component; 61, positioning block; 62, extension plate; 63, baffle; 64, compression spring; 65, trapezoidal block; 7, limiting component; 71, rectangular groove; 72, blocking plate; 73, slider; 74, threaded rod. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1-3 , a leak-proof structure for the air inlet of a protective gas device for a 3D printer, including an intake pipe 1 and a pipeline 2. The pipeline 2 is located on the right side of the intake pipe 1. The left side wall of the pipeline 2 is movably connected with a lock nut 3. A sealing rubber pad that closely fits the left side wall of the lock nut 3 is arranged outside the intake pipe 1. An external thread adapted to the lock nut 3 is provided outside the intake pipe 1. A connecting plate 4 is fixedly connected to the outside of the pipeline 2. A fixing ring 5 is fixedly connected to the outside of the intake pipe 1. Connecting components 6 with one end extending into the fixing ring 5 are movably connected to the top and bottom of the connecting plate 4. The connecting component 6 includes a positioning block 61. Positioning blocks 61 are fixedly connected to the top and bottom of the connecting plate 4. An extension plate 62 with one end extending into the fixing ring 5 is movably connected to the right side wall of the positioning block 61. A baffle 63 is fixedly connected to the right side wall of the extension plate 62. A compression spring 64 sleeved outside the extension plate 62 is fixedly connected between the left side wall of the baffle 63 and the right side wall of the positioning block 61. Trapezoidal blocks 65 are fixedly connected to the opposite sides of the upper and lower extension plates 62.
[0023] The inner top wall and inner bottom wall of the fixed ring 5 are both movably connected with a limiting component 7 outside the connecting component 6. The limiting component 7 includes a rectangular groove 71. The inner top wall and inner bottom wall of the fixed ring 5 are both provided with a rectangular groove 71. A blocking plate 72 is hinged to the right side of the inner wall of the rectangular groove 71. A sliding block 73 is slidably connected to the opposite sides of the upper and lower blocking plates 72. The opposite sides of the upper and lower blocking plates 72 are both provided with a chute adapted to the moving track of the sliding block 73. A threaded rod 74 is hinged to the opposite sides of the upper and lower sliding blocks 73. Circular rotating discs are fixedly connected to the opposite sides of the upper and lower threaded rods 74. The opposite sides of the upper and lower threaded rods 74 respectively extend to the top and bottom of the fixed ring 5. Both threaded rods 74 are threadedly connected to the inside of the fixed ring 5.
[0024] It should be noted that the standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art for connection. Moreover, the machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, the content not described in detail in the description belongs to the prior art well-known to those skilled in the art, and no specific description will be made here.
[0025] In summary, for the air inlet leak-proof structure of the protective gas device for the 3D printer, by setting the connecting component 6 and the limiting component 7, during connection, the staff rotates the locking nut 3 to connect it to the outside of the air inlet pipe 1. At this time, the two extension plates 62 drive the two trapezoidal blocks 65 to move into the fixed ring 5. Then, rotate the upper and lower threaded rods 74 to drive the sliding blocks 73 to move. With the cooperation of the sliding blocks 73, the two blocking plates 72 deflect around their connection with the rectangular groove 71. Through the cooperation of the blocking plate 72 and the trapezoidal block 65, the connection between the locking nut 3 and the air inlet pipe 1 is limited, avoiding loosening and air leakage caused by pulling, and improving the practicality of the structure. By setting the sealing rubber pad, it can prevent the protective gas from leaking from the connection between the air inlet pipe 1 and the locking nut 3, solving the problem that the connection between the air inlet pipeline of the 3D printer and the pipeline of the protective gas generally adopts a quick-insert structure or a lock nut structure. When the pipeline is pulled, due to the lack of a limiting structure at the connection, it is easy to loosen, and then air leakage will occur, affecting the use.
[0026] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.
[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A leak-proof structure for an air inlet of a protective gas device for a 3D printer, comprising an air inlet pipe (1) and a pipeline (2), characterized in that: The pipeline (2) is located on the right side of the air intake pipe (1), a locking nut (3) is provided on the left side wall of the pipeline (2), a connecting plate (4) is provided on the outside of the pipeline (2), a fixing ring (5) is provided on the outside of the air intake pipe (1), a connecting component (6) with one end extending to the inside of the fixing ring (5) is provided on the top and bottom of the connecting plate (4), and a limiting component (7) is provided on the outside of the connecting component (6); The connecting assembly (6) comprises a positioning block (61), the top and bottom of the connecting plate (4) are both provided with positioning blocks (61), the right side wall of the positioning block (61) is provided with an extension plate (62) whose one end extends into the interior of the fixing ring (5), the right side wall of the extension plate (62) is provided with a baffle plate (63), a compression spring (64) sleeved on the outside of the extension plate (62) is provided between the left side wall of the baffle plate (63) and the right side wall of the positioning block (61), and trapezoidal blocks (65) are provided on opposite sides of the upper and lower extension plates (62); The limiting assembly (7) comprises a rectangular groove (71), the inner top wall and the inner bottom wall of the fixing ring (5) are both provided with the rectangular groove (71), a blocking plate (72) is provided on the right side of the inner wall of the rectangular groove (71), the upper and lower blocking plates (72) are both provided with sliders (73) on opposite sides thereof, the upper and lower sliders (73) are both provided with threaded rods (74) on opposite sides thereof, the upper and lower threaded rods (74) are respectively extended to the top and bottom of the fixing ring (5), and the two threaded rods (74) are both connected to the inside of the fixing ring (5).
2. The air inlet anti-leakage structure of a protective gas device for a 3D printer according to claim 1, characterized in that: The outside of the air intake pipe (1) is provided with an external thread matched with the locking nut (3).
3. The anti-leakage structure of the air inlet of the protective gas device for a 3D printer according to claim 1, characterized in that: The outside of the air intake pipe (1) is provided with a sealing rubber pad which is tightly fitted to the left side wall of the locking nut (3).
4. The anti-leakage structure of the air inlet of the protective gas device for a 3D printer according to claim 1, characterized in that: The upper and lower blocking plates (72) are provided on opposite sides thereof with sliding grooves adapted to the moving track of the sliding block (73).
5. The anti-leakage structure of the air inlet of the protective gas device for a 3D printer according to claim 1, characterized in that: The opposite sides of the upper and lower threaded rods (74) are both fixedly connected with circular rotating disks.