Modularized additive manufacturing gas protection cover with replaceable side plates

Abstract

The utility model relates to a modularized additive manufacturing gas protection cover with replaceable side plates, and belongs to the technical field of additive manufacturing. The problem that in the metal accumulation process in the electric arc material adding process, a deposition gas hood can only protect an added material or a deposition sample in the vertical direction, and consequently the protection effect is lowered along with height rising is solved. Comprising a first annular plate, a second annular plate and a baffle structure, the first annular plate is connected with the second annular plate, and the second annular plate is connected with the horizontal slide way or the vertical slide way through the baffle structure. And through the matching design of the movable baffle plate structure, the second side plate structure and the second gas hole, the optimization of a protective gas outflow path is realized. Along with the rising of alloy accumulation, the height of a deposition sample is adapted by adjusting the matching design of a movable baffle structure, a second side plate structure and a second air hole, a deposition area can still be effectively protected, oxidation pollution is avoided, and the device is suitable for alloys of oxidizing materials such as titanium, aluminum and magnesium.

Description

Technical Field

[0001] This utility model relates to an additive manufacturing gas protective cover, belonging to the field of additive manufacturing technology. Background Technology

[0002] Arc additive manufacturing technology is an effective and rapid method for manufacturing alloy parts. Unlike traditional manufacturing methods, this technology offers flexible production and is suitable for various production needs, such as producing high-precision parts and rapid prototyping. During the additive manufacturing process, due to the active chemical properties of alloys such as magnesium, titanium, and aluminum, coupled with their low melting points and high oxidizability in the liquid state, the surface of the alloy molten pool is easily oxidized and contaminated, and oxides easily accumulate inside, affecting its mechanical properties. Patent CN109909592A, entitled "An Adjustable Trailing Gas Shield for Arc Additive Manufacturing and Its Usage Method," discloses a method that uses an outer shield outside the inner shield to maintain the active metal in a protective gas environment as the welding torch moves away from its surface. This maintains the stability of the arc and molten pool, prevents oxidation of titanium and aluminum during the additive manufacturing process, and improves the quality of the deposited metal. However, the shielding gas is supplied from top to bottom, failing to effectively protect the sides, thus affecting the mechanical properties of the alloy parts.

[0003] Therefore, there is an urgent need to propose a modular additive manufacturing gas shield with replaceable side panels to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems of conventional trailing gas shields during additive manufacturing, where the height increases due to metal accumulation, resulting in the inability to change the additive direction and an increased side contact area with air. These issues lead to a decrease in the protective effect of the gas shield and affect the forming quality. This invention provides a modular additive manufacturing gas shield with replaceable side panels. A brief overview of this invention is given below to provide a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of this invention. It is not intended to identify key or essential parts of this invention, nor is it intended to limit the scope of this invention.

[0005] The technical solution of this utility model:

[0006] A modular additively manufactured gas shield with replaceable side panels includes a first annular plate, a second annular plate, and a baffle structure. The first annular plate and the second annular plate are connected vertically. The front and rear sides of the second annular plate are machined with second air holes, horizontal slides, and vertical slides. The baffle structure is connected to the horizontal slides or the vertical slides.

[0007] Preferably, the top view of the first annular plate and the second annular plate is a rectangular annular structure. The second air hole, the horizontal slide, and the vertical slide are all set on the face (front and back) where the long side of the rectangle is located. There are two horizontal slides and two vertical slides on each side. Horizontal slides are set on the upper and lower sides of the second air hole, and vertical slides are set on the left and right sides of the second air hole. The baffle structure is located on the front and back sides of the second annular plate.

[0008] Preferably, the baffle structure includes a handle, and the handle is installed on the outer side surface of the first side plate structure.

[0009] Preferably, the baffle structure includes a first side plate structure, on the inner side of the first side plate structure, a first slider is machined, the first slider is disposed in a horizontal slide rail, so that the first side plate structure is slidably connected to the second annular plate, the first slider is separated from the horizontal slide rail, so that the first side plate structure and the second annular plate are detachably connected, and the protective gas can flow out from the side.

[0010] Preferably, the first slider is a trapezoidal protrusion, and the horizontal slide is a trapezoidal groove that mates with the first slider.

[0011] Preferably, the baffle structure includes a second side plate structure, the second side plate structure has a cavity inside, the inner wall of the second side plate structure is machined with a first air hole and an air outlet hole arranged vertically, the left and right sides of the first air hole are machined with second sliders, and a perforated mesh plate is installed at the air outlet hole by bolts, and the first air hole and the second air hole are fitted together.

[0012] Preferably, it also includes a slide structure, with two sets of slide structures provided at the front and rear. The slide structure includes a slide and a slider. The two sets of left-right symmetrical slides are bolted to the first annular plate. The slides are slidably connected to the slider. The lower part of the slider is bolted to the upper part of the second side plate structure.

[0013] Preferably, it also includes an upper mounting plate, a first perforated mesh plate, and a second perforated mesh plate. The upper mounting plate, the first annular plate, the first perforated mesh plate, the second annular plate, and the second perforated mesh plate are installed sequentially from top to bottom. Bolts pass through the vertical through holes on the upper mounting plate, the first annular plate, the first perforated mesh plate, the second annular plate, and the second perforated mesh plate in sequence and are connected to nuts. The upper mounting plate has an upper mounting hole machined in the middle and an air inlet hole machined on the upper mounting plate.

[0014] Preferably, the second perforated mesh plate and the perforated mesh plate are fine-pore perforated mesh plates, and a third perforated mesh plate is installed at the first air hole. The first perforated mesh plate and the third perforated mesh plate are coarse-pore perforated mesh plates.

[0015] This utility model has the following beneficial effects:

[0016] This invention optimizes the outflow path of the protective gas by combining the movable baffle structure, the second side plate structure, and the second vent. Even when the alloy buildup increases, it can still effectively protect the alloy, avoid oxidation and contamination, and ensure mechanical properties.

[0017] This utility model uses the first side plate structure of the baffle structure, with trapezoidal protrusions and grooves to make a secure connection and seal the second air hole.

[0018] This utility model features a detachable baffle structure, which facilitates replacement and operation. It is reasonably designed and has good applicability and versatility.

[0019] As the alloy deposition increases, this invention adapts the height of the deposited sample by adjusting the design of the movable baffle structure, the second side plate structure, and the second pore, thus effectively protecting the deposition area and preventing oxidation pollution. It is suitable for alloys of oxidizing materials such as titanium, aluminum, and magnesium. Attached Figure Description

[0020] Figure 1 This is a perspective view of a modular additive manufacturing gas shield with replaceable side panels according to a specific embodiment one.

[0021] Figure 2 This is a top view of an additively manufactured gas shield with modular, replaceable side panels;

[0022] Figure 3 yes Figure 2 Sectional view of AA;

[0023] Figure 4 This is a partial perspective view of an additively manufactured gas shield with modular, replaceable side panels.

[0024] Figure 5 yes Figure 8 BB section view;

[0025] Figure 6 This is a perspective view of a modular additive manufacturing gas shield with replaceable side panels according to a specific implementation method three.

[0026] Figure 7 This is a perspective view of a modular additive manufacturing gas shield with replaceable side panels according to specific implementation method four.

[0027] Figure 8 This is a front view of an additively manufactured gas shield with modular, replaceable side panels;

[0028] Figure 9 This is a partial exploded view of an additively manufactured gas shield with modular, replaceable side panels.

[0029] In the diagram: 1-Upper mounting plate, 2-First annular plate, 3-First perforated mesh plate, 4-Second annular plate, 5-Second perforated mesh plate, 6-Slide structure, 11-Upper mounting hole, 40-Second air hole, 41-First side plate structure, 410-Horizontal slide, 411-First slider, 412-Handle, 43-Second side plate structure, 420-Vertical slide, 431-Perforated mesh plate, 422-Second slider, 423-First air hole, 424-Air outlet, 61-Slide, 62-Slider, 621-Slider component, 622-L-shaped connector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0031] Specific implementation method one: Combining Figure 1-4 This embodiment describes a modular additive manufacturing gas shield with replaceable side panels, comprising a first annular plate 2, a second annular plate 4, and a baffle structure. The first annular plate 2 and the second annular plate 4 are connected vertically. The front and rear sides of the second annular plate 4 are machined with second air holes 40, horizontal slides 410, and vertical slides 420. The baffle structure is connected to the horizontal slides 410 or the vertical slides 420.

[0032] The top view of the first annular plate 2 and the second annular plate 4 is a rectangular annular structure. The second air hole 40, the horizontal slide 410, and the vertical slide 420 are all located on the long side of the rectangle (front and back). There are two horizontal slides 410 and two vertical slides 420 on each side. The second air hole 40 is provided with horizontal slides 410 on the upper and lower sides, and the second air hole 40 is provided with vertical slides 420 on the left and right sides. The baffle structure is located on the front and back sides of the second annular plate 4.

[0033] The baffle structure includes a handle 412, which is installed on the outer side surface of the first side plate structure 41.

[0034] The baffle structure includes a first side plate structure 41, on the inner side of the first side plate structure 41, a first slider 411 is machined, the first slider 411 is disposed in the horizontal slide rail 410, so that the first side plate structure 41 is slidably connected to the second annular plate 4, and the first slider 411 is separated from the horizontal slide rail 410, so that the first side plate structure 41 and the second annular plate 4 are detachably connected, and the protective gas can flow out from the side.

[0035] The first slider 411 is a trapezoidal protrusion, and the horizontal slide 410 is a trapezoidal groove that mates with the first slider 411.

[0036] It also includes an upper mounting plate 1, a first perforated mesh plate 3, and a second perforated mesh plate 5. The upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 are installed sequentially from top to bottom. Bolts pass through the vertical through holes on the upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 in sequence and are connected to nuts. The upper mounting plate 1 has an upper mounting hole 11 machined in the middle and an air inlet hole 12 machined on the upper mounting plate 1. The air inlet hole 12 is used to install an air nozzle and to vent air into the inner cavity. The upper mounting hole 11 is used to install a welding gun. The first perforated mesh plate 3 and the second perforated mesh plate 5 both have through holes machined in the middle for installing welding guns. It can be applied to the first stage of additive manufacturing, that is, the stage where the height is basically the same as the additive manufacturing plane.

[0037] Specific Implementation Method Two: Combining Figure 3-9 This embodiment describes a modular additive manufacturing gas shield with replaceable side panels, comprising a first annular plate 2, a second annular plate 4, and a baffle structure. The first annular plate 2 and the second annular plate 4 are connected vertically. The front and rear sides of the second annular plate 4 are machined with second air holes 40, horizontal slides 410, and vertical slides 420. The baffle structure is connected to the horizontal slides 410 or the vertical slides 420.

[0038] The top view of the first annular plate 2 and the second annular plate 4 is a rectangular annular structure. The second air hole 40, the horizontal slide 410, and the vertical slide 420 are all located on the long side of the rectangle (front and back). There are two horizontal slides 410 and two vertical slides 420 on each side. The second air hole 40 is provided with horizontal slides 410 on the upper and lower sides, and the second air hole 40 is provided with vertical slides 420 on the left and right sides. The baffle structure is located on the front and back sides of the second annular plate 4.

[0039] The baffle structure includes a second side plate structure 43, which has a cavity inside. The inner wall of the second side plate structure 43 is machined with a first air hole 421 and an air outlet 424 arranged vertically. The left and right sides of the first air hole 421 are machined with second sliders 422. A perforated mesh plate 431 is bolted to the air outlet 424. The first air hole 421 and the second air hole 40 are engaged. When the first air hole 421 and the second air hole 40 are connected, the inner cavity formed by the first annular plate 2 and the second annular plate 4 is connected to the cavity, and the protective gas flows out from the air outlet 424. When the first air hole 421 and the second air hole 40 are not connected, the baffle is used to block the second air hole 40, so that the protective gas flows out from the second perforated mesh plate 5. The air outlet 424 is always located below the second air hole 40.

[0040] It also includes a slide structure 6, with two sets of slide structures 6 arranged at the front and rear. The slide structure 6 includes a slide 61 and a slider 62. The two sets of left-right symmetrical slides 61 are bolted to the first annular plate 2. The slide 61 and the slider 62 are slidably connected. The lower part of the slider 62 is bolted to the upper part of the second side plate structure 43 for easy disassembly and replacement. The slider 62 can be manually driven. When the first air hole 421 is located between the second air hole 40 and the horizontal slide 410, the first air hole 421 is blocked by the front and / or rear of the second annular plate 4, and no air is released from the side. Alternatively, the first air hole 421 is connected to the second air hole 40, and air is released from the side through the air outlet 424. Therefore, as the additive position is raised, the second side plate structure 43 can be extended, and protective gas can be sprayed from the side to protect the additive position, greatly preventing oxidation pollution and helping to ensure the mechanical properties of the additive part.

[0041] It also includes an upper mounting plate 1, a first perforated mesh plate 3, and a second perforated mesh plate 5. The upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 are installed sequentially from top to bottom. Bolts pass through the vertical through holes on the upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 in sequence and are connected to nuts. The upper mounting plate 1 has an upper mounting hole 11 machined in the middle and an air inlet hole 12 machined on the upper mounting plate 1. The air inlet hole 12 is used to install an air nozzle and to vent air into the inner cavity. The upper mounting hole 11 is used to install a welding gun. The first perforated mesh plate 3 and the second perforated mesh plate 5 both have through holes machined in the middle for installing welding guns.

[0042] The second perforated mesh plate 5 and the perforated mesh plate 431 are fine-pore perforated mesh plates. A third perforated mesh plate is installed at the first air hole 421. The first perforated mesh plate 3 and the third perforated mesh plate are coarse-pore perforated mesh plates.

[0043] Specific implementation method three: Combining Figure 3 , 4 5 and 6 describe this embodiment. This embodiment provides a modular additive manufacturing gas shield with replaceable side panels, including a first annular plate 2, a second annular plate 4, and a baffle structure. The first annular plate 2 and the second annular plate 4 are connected vertically. The front and rear sides of the second annular plate 4 are machined with second air holes 40, horizontal slides 410, and vertical slides 420. The baffle structure is connected to the horizontal slides 410 or the vertical slides 420.

[0044] The top view of the first annular plate 2 and the second annular plate 4 is a rectangular annular structure. The second air hole 40, the horizontal slide 410, and the vertical slide 420 are all located on the long side of the rectangle (front and back). There are two horizontal slides 410 and two vertical slides 420 on each side. The second air hole 40 is provided with horizontal slides 410 on the upper and lower sides, and the second air hole 40 is provided with vertical slides 420 on the left and right sides. The baffle structure is located on the front and back sides of the second annular plate 4.

[0045] The baffle structure includes a first side plate structure 41, on the inner side of the first side plate structure 41, a first slider 411 is machined, the first slider 411 is disposed in the horizontal slide rail 410, so that the first side plate structure 41 is slidably connected to the second annular plate 4, and the first slider 411 is separated from the horizontal slide rail 410, so that the first side plate structure 41 and the second annular plate 4 are detachably connected, and the protective gas can flow out from the side.

[0046] The baffle structure also includes a handle 412, which is installed on the outer side surface of the first side plate structure 41.

[0047] The first slider 411 is a trapezoidal protrusion, and the horizontal slide 410 is a trapezoidal groove that mates with the first slider 411.

[0048] The baffle structure includes a second side plate structure 43, which has an internal cavity. The inner wall of the second side plate structure 43 is machined with first air holes 421 and air outlet holes 424, arranged vertically. Second sliders 422 are machined on the left and right sides of the first air holes 421. A perforated mesh plate 431 is bolted to the air outlet hole 424. The first air hole 421 and the second air hole 40 are engaged. When the first air hole 421 and the second air hole 40 are connected, the inner cavity formed by the first annular plate 2 and the second annular plate 4 is connected to the cavity. Protective gas flows out from the vent 424. When the first vent 421 is not connected to the second vent 40, it is used to block the second vent 40, so that the protective gas flows out from the second perforated mesh plate 5. The vent 424 is always located below the second vent 40. An L-shaped clearance groove is machined on the upper inner side of the second side plate structure 43 to avoid the slide rail 61. The height H2 of the clearance groove extends by a distance h2 when the second side plate structure 43 is at the bottom and by 0 when the second side plate structure 43 is at the top, making reasonable use of space.

[0049] It also includes a slide structure 6, with two sets of slide structures 6 arranged at the front and rear. The slide structure 6 includes a slide 61 and a slider 62. The two sets of left-right symmetrical slides 61 are bolted to the first annular plate 2. The slides 61 and sliders 62 are slidably connected. The lower part of the slider 62 is bolted to the upper part of the second side plate structure 43. The slider 62 can be manually driven. The movement of the slider 62 along the slide 61 realizes the raising and lowering of the second side plate structure 43 along the vertical slide 420. When the first air hole 421 is located between the second air hole 40 and the horizontal slide 410, the first air hole 421 is blocked by the front and / or the second annular plate 4, and no air is released from the side. Alternatively, the first air hole 421 is connected to the second air hole 40, and air is released from the side through the air outlet 424. Therefore, as the additive position is raised, the second side plate structure 43 can be extended, and protective gas is sprayed out from the side to protect the additive position, greatly preventing oxidation pollution and helping to ensure the mechanical properties of the additive part.

[0050] It also includes an upper mounting plate 1, a first perforated mesh plate 3, and a second perforated mesh plate 5. The upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 are installed sequentially from top to bottom. Bolts pass through the vertical through holes on the upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 in sequence and are connected to nuts. The upper mounting plate 1 has an upper mounting hole 11 machined in the middle and an air inlet hole 12 machined on the upper mounting plate 1. The air inlet hole 12 is used to install an air nozzle and to vent air into the inner cavity. The upper mounting hole 11 is used to install a welding gun. The first perforated mesh plate 3 and the second perforated mesh plate 5 both have through holes machined in the middle for installing welding guns.

[0051] The second perforated mesh plate 5 and the perforated mesh plate 431 are fine-pore perforated mesh plates. A third perforated mesh plate is installed at the first air hole 421. The first perforated mesh plate 3 and the third perforated mesh plate are coarse-pore perforated mesh plates, which can be used in the second stage of additive manufacturing, that is, the stage where the height is slightly higher than the additive manufacturing plane.

[0052] Specific implementation method four: Combination Figure 3 , 4 7 and 8 describe this embodiment. This embodiment provides a modular additive manufacturing gas shield with replaceable side panels, including a first annular plate 2, a second annular plate 4, and a baffle structure. The first annular plate 2 and the second annular plate 4 are connected vertically. The front and rear sides of the second annular plate 4 are machined with second air holes 40, horizontal slides 410, and vertical slides 420. The baffle structure is connected to the horizontal slides 410 or the vertical slides 420.

[0053] The top view of the first annular plate 2 and the second annular plate 4 is a rectangular annular structure. The second air hole 40, the horizontal slide 410, and the vertical slide 420 are all located on the long side of the rectangle (front and back). There are two horizontal slides 410 and two vertical slides 420 on each side. The second air hole 40 is provided with horizontal slides 410 on the upper and lower sides, and the second air hole 40 is provided with vertical slides 420 on the left and right sides. The baffle structure is located on the front and back sides of the second annular plate 4.

[0054] The baffle structure includes a first side plate structure 41, on the inner side of the first side plate structure 41, a first slider 411 is machined, the first slider 411 is disposed in the horizontal slide rail 410, so that the first side plate structure 41 is slidably connected to the second annular plate 4, and the first slider 411 is separated from the horizontal slide rail 410, so that the first side plate structure 41 and the second annular plate 4 are detachably connected, and the protective gas can flow out from the side.

[0055] The baffle structure also includes a handle 412, which is installed on the outer side surface of the first side plate structure 41.

[0056] The first slider 411 is a trapezoidal protrusion, and the horizontal slide 410 is a trapezoidal groove that mates with the first slider 411.

[0057] The baffle structure includes a second side plate structure 43, which has an internal cavity. The inner wall of the second side plate structure 43 is machined with a first air hole 421 and an air outlet 424 arranged vertically. Second sliders 422 are machined on the left and right sides of the first air hole 421. A perforated mesh plate 431 is bolted to the air outlet 424. The first air hole 421 and the second air hole 424 are fitted together. When the first air hole 421 and the second air hole 424 are connected, the inner cavity formed by the first annular plate 2 and the second annular plate 424 is connected to the cavity, ensuring… The protective air flows out from the air outlet 424. When the first air outlet 421 is not connected to the second air outlet 40, it is used to block the second air outlet 40, so that the protective air flows out from the second perforated mesh plate 5. The air outlet 424 is always located below the second air outlet 40. The upper inner side of the second side plate structure 43 is processed with an L-shaped clearance groove to avoid the slide 61. The height H1 of the clearance groove extends a distance h1 when the second side plate structure 43 is at the uppermost side. h1 is greater than 0. When there is no need for side air outlet, it can reduce the diffusion speed of the upper airflow at the accumulation point.

[0058] It also includes a slide structure 6, with two sets of slide structures 6 arranged at the front and rear. Each slide structure 6 includes a slide 61 and a slider 62. The two sets of left-right symmetrical slides 61 are bolted to the first annular plate 2. The slides 61 are slidably connected to the sliders 62. The lower part of the slider 62 is bolted to the upper part of the second side plate structure 43. The slider 62 includes a slider component 621 and an L-shaped connector 622. The vertical part of the L-shaped connector 622 is bolted to the slider 62, and the horizontal part of the L-shaped connector 622 is bolted to the second side plate structure 43. The slider 62 is located within the slide 61 and is slidably connected to it. A stop can be provided at the lower end of the slide 61 to prevent… The slider 62 can be manually driven to move along the slide rail 61, thereby raising and lowering the second side plate structure 43 along the vertical slide rail 420. When the first air hole 421 is located between the second air hole 40 and the horizontal slide rail 410, the first air hole 421 is blocked by the front and / or the second annular plate 4, and no air is released from the side. Alternatively, the first air hole 421 can be connected to the second air hole 40, and air can be released from the side through the air outlet 424. Therefore, as the additive position rises, the second side plate structure 43 can extend, and protective gas can be sprayed from the side to protect the additive position, greatly preventing oxidation pollution and ensuring the mechanical properties of the additive part.

[0059] It also includes an upper mounting plate 1, a first perforated mesh plate 3, and a second perforated mesh plate 5. The upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 are installed sequentially from top to bottom. Bolts pass through the vertical through holes on the upper mounting plate 1, the first annular plate 2, the first perforated mesh plate 3, the second annular plate 4, and the second perforated mesh plate 5 in sequence and are connected to nuts. The upper mounting plate 1 has an upper mounting hole 11 machined in the middle and an air inlet hole 12 machined on the upper mounting plate 1. The air inlet hole 12 is used to install an air nozzle and to vent air into the inner cavity. The upper mounting hole 11 is used to install a welding gun. The first perforated mesh plate 3 and the second perforated mesh plate 5 both have through holes machined in the middle for installing welding guns.

[0060] The second perforated mesh plate 5 and the perforated mesh plate 431 are fine-pore perforated mesh plates. A third perforated mesh plate is installed at the first air hole 421. The first perforated mesh plate 3 and the third perforated mesh plate are coarse-pore perforated mesh plates, which can be used in the third stage of additive manufacturing, that is, the stage where the height is higher than the additive manufacturing plane.

[0061] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, this utility model will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by this utility model.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular additively manufactured gas shield with replaceable side panels, characterized in that: It includes a first annular plate (2), a second annular plate (4) and a baffle structure. The first annular plate (2) is connected to the second annular plate (4). The side of the second annular plate (4) is processed with a second air hole (40), a horizontal slide (410) and a vertical slide (420). The baffle structure is connected to the horizontal slide (410) or the vertical slide (420).

2. The additively manufactured gas shield with modular replaceable side panels according to claim 1, characterized in that: The first annular plate (2) and the second annular plate (4) are rectangular annular structures. The second air hole (40), the horizontal slide (410), and the vertical slide (420) are all located on the long side of the rectangle. The upper and lower sides of the second air hole (40) are provided with horizontal slides (410), and the left and right sides of the second air hole (40) are provided with vertical slides (420). The baffle structure is located on the front and rear sides of the second annular plate (4).

3. A modular additive manufacturing gas shield with replaceable side panels according to claim 1 or 2, characterized in that: The baffle structure includes a handle (412), and the handle (412) is mounted on the first side plate structure (41).

4. The additive manufacturing gas shield with modular replaceable side panels according to claim 3, characterized in that: The baffle structure includes a first side plate structure (41), on which a first slider (411) is machined. The first slider (411) is disposed in a horizontal slide rail (410) so that the first side plate structure (41) is slidably connected to the second annular plate (4).

5. The additively manufactured gas shield with modular replaceable side panels according to claim 3, characterized in that: The first slider (411) is a trapezoidal protrusion, and the horizontal slide (410) is a trapezoidal groove that cooperates with the first slider (411).

6. A modular additive manufacturing gas shield with replaceable side panels according to claim 1 or 2, characterized in that: The baffle structure includes a second side plate structure (43), which has a cavity inside. The inner side wall of the second side plate structure (43) is machined with a first air hole (421) and an air outlet (424). The left and right sides of the first air hole (421) are machined with second sliders (422). A perforated mesh plate (431) is installed at the air outlet (424). The first air hole (421) and the second air hole (40) are fitted together.

7. The additively manufactured gas shield with modular replaceable side panels according to claim 6, characterized in that: It also includes a slide structure (6), which includes a slide (61) and a slider (62). The slide (61) is connected to the first annular plate (2), and the slide (61) and the slider (62) are slidably connected. The lower part of the slider (62) is connected to the upper part of the second side plate structure (43).

8. The additively manufactured gas shield with modular replaceable side panels according to claim 6, characterized in that: It also includes an upper mounting plate (1), a first perforated mesh plate (3) and a second perforated mesh plate (5). The upper mounting plate (1), the first annular plate (2), the first perforated mesh plate (3), the second annular plate (4) and the second perforated mesh plate (5) are installed sequentially from top to bottom. The upper mounting plate (1) has an upper mounting hole (11) in the middle and an air inlet hole (12) is also processed on the upper mounting plate (1).

9. A modular additive manufacturing gas shield with replaceable side panels according to claim 8, characterized in that: The second perforated mesh plate (5) and the perforated mesh plate (431) are fine-pore perforated mesh plates. A third perforated mesh plate is installed at the first air hole (421). The first perforated mesh plate (3) and the third perforated mesh plate are coarse-pore perforated mesh plates.

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