A back of weld argon protection device

Abstract

The application discloses a welding seam back argon protection device and relates to the technical field of welding. The device comprises a workbench, a plurality of supports are symmetrically arranged on the workbench, rotating round plates are arranged on the top of the supports, rotating round plates are arranged on the side of each two adjacent supports, rotating mechanisms are arranged in the rotating round plates, a handle one is arranged on the outer side of one of the supports and connected with the rotating mechanism, the rotating mechanism comprises a rotating frame in the shape of U and a bevel gear two rotatingly arranged in the rotating round plate, the bevel gear drives the negative pressure pipe to make a circular motion synchronously with the rotating frame, the composition of the waste gas generated during welding is collected while welding, and the waste gas is prevented from diffusing to the surroundings and causing adverse effects on the environment and the operators.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an argon gas protection device for the back of a weld. Background Technology

[0002] Argon protection on the back of the weld is a key process to prevent oxidation of the back of the high-temperature weld and ensure welding quality, especially suitable for welding easily oxidized materials such as stainless steel, aluminum alloy, and titanium alloy.

[0003] While direct blowing can provide sufficient protection during actual welding, it generates a lot of waste gas, mainly in the welding arc zone. This waste gas includes metal vapor (such as iron and manganese), ozone, and nitrogen oxides. The temperature is high, and the metal scraps contained in the waste gas tend to stick to various parts of the surface after cooling, making them difficult to clean. Furthermore, traditional methods for collecting these waste gases involve placing the gas collection equipment in a fixed direction, which cannot collect and treat the waste gas generated immediately after welding, thus limiting the effectiveness of the treatment. Summary of the Invention

[0004] To address the problem that traditional waste gas treatment methods cannot collect and treat waste gas generated immediately after welding, the purpose of this invention is to provide an argon gas protection device for the back of the weld.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an argon gas protection device for the back side of a weld, comprising a worktable:

[0006] Multiple supports are symmetrically arranged on the workbench. A rotating circular plate is provided on the top of each support. A rotating circular plate is provided on the side of each pair of adjacent supports that are close to each other. A rotating mechanism is provided inside the rotating circular plate. A handle is provided on the outside of one of the supports and is connected to the rotating mechanism. The rotating mechanism includes a U-shaped rotating frame and a helical gear II that is rotatably disposed in the rotating circular plate. The rotating frame is connected to the helical gear II. A rotating groove is provided on the side of each pair of adjacent rotating frames that are far apart from each other, and a rotating rod that can rotate circumferentially with the rotating groove is provided. A welding pipe is provided between each pair of adjacent rotating frames. A placement cylinder for placing a welding torch is provided between each pair of adjacent rotating rods. A negative pressure pump is also provided inside the rotating frame. The suction end of the negative pressure pump is connected to a collection mechanism. A negative pressure pipe is connected to the collection mechanism and is fixed to the rotating frame by a connecting bracket.

[0007] Preferably, a rotating bracket is rotatably mounted on the inner wall of the collection box, and activated carbon blocks for adsorbing waste gas are installed inside the collection box. A connecting rod is rotatably mounted at the center of the rotating bracket, and a collection cover plate is mounted on the connecting rod. The collection cover plate is one-third spherical, and multiple cooling grooves are circumferentially distributed on the inner wall of the collection cover plate. Multiple drainage holes are provided on the inner wall of the collection cover plate between two adjacent cooling grooves. A drive fan blade connected to the connecting rod is located at the center of the inner wall of the collection cover plate opposite to the suction end of the negative pressure pump. A second handle is slidably mounted on the outer side of the collection box, and a collection pull plate is provided on one side of the second handle plate.

[0008] Preferably, the collection box is equipped with activated carbon blocks for adsorbing waste gas.

[0009] Preferably, the airflow output end of the negative pressure pump is connected to an air blowing pipe, and the air blowing pipe is fixed to the rotating rod by a connecting bracket.

[0010] Preferably, the rotating frame has multiple slots symmetrically arranged in the middle, and a helical gear 1 that can mesh with the helical gear 2 is arranged in the slot. A driven wheel 1 is connected to the side of two adjacent helical gears 1 that are far apart from each other. The driven wheel 1 is connected to a driven wheel 2 through a transmission belt. A lifting screw rod located inside the rotating frame is connected to the driven wheel 2. A lifting insert rod is threaded on the lifting screw rod. A grinding plate is connected to the top of the lifting insert rod. A plurality of fixing pins are arranged on the grinding plate.

[0011] Preferably, multiple central rods are arranged between two adjacent rotating circular plates, one of which is connected to a handle. Multiple threaded rods are symmetrically arranged on the central rod, which are respectively rotatably connected to the helical gear and the rotating circular plate. An adjusting ring I and an adjusting ring II that can be threadedly connected to the threaded rods are arranged on the central rod. The adjusting ring I is slidably connected to the central rod. A limit rod I and a limit rod II are rotatably arranged on the adjusting ring I and the adjusting ring II, respectively. An arc-shaped limit plate is rotatably arranged on both the limit rod I and the limit rod II.

[0012] Preferably, the center of the central rod is provided with an outlet circular plate and an inlet circular plate that are magnetically attracted to each other. The outlet circular plate is provided with a number of vent holes for gas flow in the air chamber. A number of connecting wires are provided between the inlet and outlet circular plates. A receiving rod is slidably provided on both the inlet and outlet circular plates. A limiting plate is provided at the end of each pair of adjacent receiving rods that are close to each other. The two adjacent limiting plates are magnetically attracted to each other. One limiting plate is provided with a limiting pin, and the other limiting plate is provided with a socket that can be inserted into the limiting pin one by one.

[0013] Preferably, a waste trough for collecting welding waste is provided at the center of the workbench.

[0014] Preferably, an argon gas cylinder is provided on one side of the workbench.

[0015] Preferably, the output end of the argon cylinder passes through the inlet circular plate, the rotating circular plate, and the threaded rod, and the output end port of the argon cylinder is located between the inlet circular plate and the outlet circular plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By setting helical gears, the helical gears drive the negative pressure pipe to make a circular motion synchronized with the rotating frame, thereby realizing the function of collecting the components of welding exhaust gas while welding, avoiding the spread of welding exhaust gas to the surroundings and causing adverse effects on the environment and operators.

[0018] 2. By setting an arc-shaped limiting plate, the extension of limiting rod one and limiting rod two causes the arc-shaped limiting plate to be close to or away from the workpiece to be welded, thereby completing the fixing and disassembly of the workpiece. The operation is simple and convenient, and the limiting rod one and limiting rod two can also be used to fix and weld workpieces of different pipe diameters.

[0019] 3. Argon gas is released from an argon gas tank to form a flowing argon gas chamber between the inlet and outlet discs. Before this, the distance between the inlet and outlet discs is controlled to a suitable distance to ensure that the argon gas chamber can prevent oxygen contamination of the welding back side while minimizing waste caused by continuous argon gas supply. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a side view of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the welded pipe of the present invention.

[0024] Figure 4 This is a schematic diagram of the negative pressure pipe structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the welded pipe connection structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the limiting insert structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the central rod structure of the present invention.

[0028] Figure 8 This is a schematic diagram of the internal structure of the collection box of the present invention.

[0029] Figure 9 This is a schematic diagram of the connection between the air blowing tube and the connecting bracket of the present invention.

[0030] In the diagram: 1. Workbench; 2. Argon cylinder; 3. Waste trough; 4. Support; 5. Handle 1; 6. Rotating circular plate; 61. Rotating groove; 610. Arc-shaped limiting plate; 611. Adjusting ring 2; 612. Limiting rod 1; 613. Adjusting ring 1; 614. Limiting rod 2; 616. Slot; 62. Rotating rod; 63. Rotating frame; 64. Driven wheel 1; 65. Helical gear 1; 66. Driven wheel 2; 661. Lifting screw rod; 662. Lifting insert rod; 663. Grinding plate; 664. Fixing pin. 67. Helical gear II; 68. Threaded rod; 69. Center rod; 691. Inlet circular plate; 692. Outlet circular plate; 693. Connecting wire; 694. Limiting insert plate; 695. Limiting pin; 7. Negative pressure pump; 71. Collection box; 711. Rotating bracket; 712. Collection cover plate; 713. Cooling tank; 714. Leakage hole; 715. Collection pull plate; 72. Handle II; 73. Negative pressure pipe; 8. Welded pipe; 9. Placement cylinder; 91. Connecting bracket I; 92. Connecting bracket II; 93. Air blowing pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Figure 1-8 As shown, the present invention provides an argon gas protection device for the back side of a weld, including a worktable 1.

[0033] according to Figure 1 , Figure 7 and Figure 9As shown, multiple supports 4 are symmetrically arranged on the workbench 1. A rotating circular plate 6 is provided on the top of each support 4. Rotating circular plates 6 are also provided on the sides of adjacent supports 4 that are close to each other. A rotating mechanism is provided inside each rotating circular plate 6. A handle 5 is provided on the outer side of one of the supports 4, and the handle 5 is connected to the rotating mechanism. The rotating mechanism includes a U-shaped rotating frame 63 and a helical gear 67 rotatably disposed within the rotating circular plate 6. The rotating frame 63 is connected to the helical gear 67. Adjacent supports 4... The rotating frame 63 has a rotating groove 61 on one side away from each other, and a rotating rod 62 that can be connected to the rotating groove 61 for circumferential rotation. A welding pipe 8 is provided between two adjacent rotating frames 63, and a placement cylinder 9 for placing a welding torch is provided between two adjacent rotating rods 62. A negative pressure pump 7 is also provided inside the rotating frame 63. The suction end of the negative pressure pump 7 is connected to a collection mechanism. A negative pressure pipe 73 is connected to the collection mechanism, and the negative pressure pipe 73 is fixed to the rotating frame 63 by a connecting bracket 91.

[0034] The airflow output end of the negative pressure pump 7 is connected to an air blowing pipe 93, which is fixed to the rotating rod 62 by a connecting bracket 92.

[0035] A rotating bracket 711 is rotatably mounted on the inner wall of the collection box 71. Activated carbon blocks are placed inside the collection box 71. A connecting rod is rotatably mounted at the center of the rotating bracket 711. A collection cover plate 712 is mounted on the connecting rod. The collection cover plate 712 is one-third spherical, and multiple cooling grooves 713 are circumferentially distributed on its inner wall. Multiple drainage holes 714 are provided on the inner wall of the collection cover plate 712 between two adjacent cooling grooves 713. A drive fan blade connected to the connecting rod is located at the center of the inner wall of the collection cover plate 712 opposite to the suction end of the negative pressure pump 7. A second handle 72 is slidably mounted on the outer side of the collection box 71. A collection pull plate 715 is provided on one side of the handle 72 and attached to the collection box 71. The negative pressure generated by the negative pressure pump 7 draws welding exhaust gas into the collection box 71. When the exhaust gas enters the collection box 71, it drives the drive fan blades to rotate, which in turn drives the collection cover 712 to rotate. During the rotation, the collection cover 712 continuously comes into contact with the high-temperature substances in the exhaust gas. By setting up cooling grooves 713, the contact area of ​​the high-temperature substances is increased, thereby rapidly cooling them. The continuous rotation of the collection cover 712 causes the position of the high-temperature substances on the collection cover 712 to constantly change, thereby ensuring that the high-temperature substances do not accumulate and accelerating the cooling rate during continuous rotation. By setting up multiple collection covers 712, the high-temperature substances are cooled and screened in multiple layers. The cooled welding waste falls into the collection pull plate 715 and is collected by pulling the handle 72, preventing small fragments in the waste from being dispersed into the air with the airflow and causing damage to precision machinery.

[0036] In actual use, the welding torch is placed on the placement cylinder 9. After selecting the welding point, the welding torch is aimed at the weld seam between the two welding pipes. During the continuous welding process, the welding torch performs circumferential welding on the surface of the two welding pipes. As the welding torch and placement cylinder 9 continuously rotate in a circular motion, they drive the rotating rod 62 and the helical gear 67 connected to the rotating rod 62 to move. In turn, the helical gear 67 drives the entire rotating frame 63. During the rotation of the rotating frame 63, it drives the negative pressure pipe 73 to make a circular motion synchronous with the rotating frame 63. When the welding torch makes a slow circular rotation to ensure the stability of the welding, it also drives the negative pressure pipe 73 to rotate synchronously with it. On the one hand, it ensures that the pipe of the negative pressure pipe 73 will not be entangled due to rapid rotation. On the other hand, it can also realize the function of collecting the components of welding exhaust gas while welding, avoiding the spread of welding exhaust gas to the surroundings and causing adverse effects on the environment and operators.

[0037] according to Figure 1 , Figure 2 and Figure 4 As shown, the rotating frame 63 has multiple symmetrical slots 616 in the middle. Each slot 616 contains a helical gear 65 that meshes with a second helical gear 67. A driven wheel 64 is connected to the side of two adjacent helical gears 65 that are far apart from each other. The driven wheel 64 is connected to a driven wheel 66 via a transmission belt. A lifting screw rod 661 located inside the rotating frame 63 is connected to the driven wheel 66. A lifting rod 662 is threaded onto the lifting screw rod 661. A grinding plate 663 is connected to the top of the lifting rod 662. The grinding plate 663 has multiple fixing pins 664 for securing the rod. During use, the rod is first raised and lowered by rotation. The length of the lifting rod 662 is adjusted by inserting rod 662 until the grinding paper set on the grinding plate 663 is gently pressed against the surface of the part to be welded. The circumferential rotation of the rotating frame 63 drives the helical gear 2 67 and helical gear 1 65 to rotate. During the rotation of helical gear 1 65, the driven wheel 1 64 and driven wheel 2 66 are further driven to rotate. This ensures that the welding gun drives the grinding paper to grind along the surface of the welded part while rotating in a circular motion. This allows for preliminary grinding of the welding waste before it is completely cooled and adheres to the surface of the welded part, reducing the difficulty of grinding after the debris has completely cooled and solidified. At the same time, the air pipe 93 blows away the larger particles generated by the grinding into the corresponding collection tank.

[0038] according to Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, multiple central rods 69 are arranged between two adjacent rotating circular plates 6. One of the central rods 69 is connected to the handle 5. Multiple threaded rods 68 are symmetrically arranged on the central rod 69, which are respectively rotatably connected to the helical gear 67 and the rotating circular plate 6. An adjusting ring 613 and an adjusting ring 611 that can be threadedly connected to the threaded rods 68 are provided on the central rod 69. The adjusting ring 613 is slidably connected to the central rod 69. A limiting rod 612 and a limiting rod 614 are rotatably arranged on the adjusting ring 611 and the adjusting ring 613, respectively. An arc-shaped limiting plate 610 is rotatably arranged on both the limiting rod 612 and the limiting rod 614.

[0039] At the center of the central rod 69, there are two mutually magnetically attracted circular plates: an outlet plate 692 and an inlet plate 691. The outlet plate 692 has several vents for gas flow within the air chamber. Several connecting wires 693 connect the inlet plate 691 and the outlet plate 692. Each of the inlet plate 691 and the outlet plate 692 has a sliding support rod. A limiting plate 694 is located at the end of each adjacent supporting rod. Adjacent limiting plates 694 are magnetically attracted to each other. One limiting plate 694 has a limiting pin 695, and the other has a corresponding insertion port for each limiting pin 695. In actual operation… In the process, the two pipes to be welded are first inserted into the center rod 69. After controlling the distance between the air inlet plate 691 and the air outlet plate 692 to a suitable distance, the two adjacent limiting plates 694 are inserted together. At this time, while rotating the handle 5, the adjusting ring 611 is fixed by hand. The adjusting ring 611 and the adjusting ring 613 move closer or further away from each other as the direction of rotation of the handle 5 changes. This drives the extension or contraction of the limiting rod 612 and the limiting rod 614, and finally drives the arc-shaped limiting plate 610 to be close to or away from the part to be welded, thus completing the fixing and disassembly of the part to be welded. At the same time, the extension distance of the limiting rod 612 and the limiting rod 614 can be adjusted to weld parts of different pipe diameters.

[0040] according to Figure 1 and Figure 2 As shown, a waste trough 3 for collecting welding waste is provided at the center of the workbench 1, and an argon gas tank 2 is provided on one side of the workbench 1. The output end of the argon gas tank 2 passes through the inlet circular plate 691, the rotating circular plate 6, and the threaded rod 68, and the output end port of the argon gas tank 2 is located between the inlet circular plate 691 and the outlet circular plate 692. In this way, argon gas is released through the argon gas tank 2 to form a flowing argon gas chamber between the inlet circular plate 691 and the outlet circular plate 692.

[0041] Working principle: First, argon gas is released through argon tank 2 to form a flowing argon gas chamber between inlet circular plate 691 and outlet circular plate 692. Before this, the distance between inlet circular plate 691 and outlet circular plate 692 is controlled to a suitable distance to ensure that the argon gas chamber can avoid oxygen contamination of the welding back side while minimizing the waste caused by the continuous introduction of argon gas.

[0042] While rotating handle 5, adjust ring 611 is fixed by hand. At this time, adjust ring 611 and adjust ring 613 move closer to each other in the direction of rotation of handle 5, thereby causing limit rod 612 and limit rod 614 to extend. This causes the arc-shaped limit plate 610 to fit tightly against the workpiece to be welded, thus fixing the workpiece. At the same time, the extension distance of limit rod 612 and limit rod 614 can be adjusted to weld workpieces of different diameters.

[0043] Place the welding torch on the placement cylinder 9, select the welding point, and aim the welding torch at the weld seam between the two welding pipes. During the continuous welding process, the welding torch performs circumferential welding on the surface of the two welding pipes. As the welding torch and placement cylinder 9 move in a continuous circular motion, they drive the negative pressure pipe 73 to make a circular motion synchronized with the rotating frame 63. This achieves the function of collecting the components of welding exhaust gas while welding, avoiding the spread of welding exhaust gas to the surroundings and causing adverse effects on the environment and operators.

[0044] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An argon gas protection device for the back side of a weld, comprising a workbench (1), characterized in that: Multiple supports (4) are symmetrically arranged on the workbench (1). A rotating circular plate (6) is provided on the top of each support (4). A rotating circular plate (6) is provided on the side of each pair of adjacent supports (4). A rotating mechanism is provided inside the rotating circular plate (6). A handle (5) is provided on the outside of one of the supports (4), and the handle (5) is connected to the rotating mechanism. The rotating mechanism includes a U-shaped rotating frame (63) and a helical gear (67) rotatably arranged inside the rotating circular plate (6). The rotating frame (63) is connected to the helical gear (67). A rotating groove (61) and a rotating rod (62) that can rotate circumferentially in cooperation with the rotating groove (61) are provided on the side of the rotating frame (63) that are far apart from each other. A welding pipe (8) is provided between two adjacent rotating frames (63), and a placement cylinder (9) for placing a welding gun is provided between two adjacent rotating rods (62). A negative pressure pump (7) is also provided on the inner side of the rotating frame (63). The suction end of the negative pressure pump (7) is connected to a collection mechanism. A negative pressure pipe (73) is connected to the collection mechanism, and the negative pressure pipe (73) is fixed on the rotating frame (63) by a connecting bracket (91). Multiple central rods (69) are arranged between two adjacent rotating circular plates (6). One of the central rods (69) is connected to the handle (5). Multiple threaded rods (68) are symmetrically arranged on the central rod (69) and are respectively connected to the helical gear (67) and the rotating circular plate (6). An adjusting ring (613) and an adjusting ring (611) that can be threadedly connected to the threaded rod (68) are arranged on the central rod (69). The adjusting ring (613) is slidably connected to the central rod (69). Limiting rods (612) and (614) are respectively rotatably arranged on the adjusting ring (611) and the adjusting ring (613). Arc-shaped limiting plates (610) are rotatably arranged on both the limiting rod (612) and the limiting rod (614). At the center of the rod (69) are an exhaust plate (692) and an intake plate (691) that are magnetically attracted to each other. The exhaust plate (692) has several vent holes for gas flow in the air chamber. Several connecting wires (693) are provided between the intake plate (691) and the exhaust plate (692). A receiving rod is slidably provided on both the intake plate (691) and the exhaust plate (692). A limiting plate (694) is provided at the end of each of the two adjacent receiving rods that are close to each other. The two adjacent limiting plates (694) can be magnetically attracted to each other. A limiting pin (695) is provided on one of the limiting plates (694), and a socket that can be inserted into the limiting pin (695) one by one.

2. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, A rotating bracket (711) is rotatably mounted on the inner wall of the collection box (71). A connecting rod is rotatably mounted at the center of the rotating bracket (711). A collection cover plate (712) is mounted on the connecting rod. The collection cover plate (712) is one-third spherical, and multiple cooling grooves (713) are circumferentially distributed on the inner wall of the collection cover plate (712). Multiple leakage holes (714) are provided on the inner wall of the collection cover plate (712) between two adjacent cooling grooves (713). A drive fan blade connected to the connecting rod is provided at the center of the inner wall of the collection cover plate (712) opposite to the suction end of the negative pressure pump (7). A handle two (72) is slidably mounted on the outer side of the collection box (71). A collection pull plate (715) is provided on one side of the handle two (72) on the collection box (71).

3. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, The collection box (71) is equipped with activated carbon blocks for adsorbing waste gas.

4. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, The airflow output end of the negative pressure pump (7) is connected to an air blowing pipe (93), and the air blowing pipe (93) is fixed on the rotating rod (62) by a connecting bracket (92).

5. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, The rotating frame (63) has a plurality of slots (616) symmetrically arranged in the middle. The slots (616) are provided with helical gears (65) that can mesh with helical gears (67). The side of two adjacent helical gears (65) that are far apart from each other is connected to driven wheel (64). Driven wheel (64) is connected to driven wheel (66) via a transmission belt. Driven wheel (66) is connected to a lifting screw rod (661) located inside the rotating frame (63). A lifting rod (662) is threaded onto the lifting screw rod (661). A grinding plate (663) is connected to the top of the lifting rod (662). The grinding plate (663) is provided with a plurality of fixing pins (664) for fixing.

6. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, The workbench (1) is provided with a waste trough (3) for collecting welding waste at its center.

7. The argon gas protection device for the back side of a weld as described in claim 1, characterized in that, An argon cylinder (2) is provided on one side of the workbench (1).

8. The argon gas protection device for the back side of a weld as described in claim 7, characterized in that, The output end of the argon tank (2) passes through the inlet circular plate (691), the rotating circular plate (6) and the threaded rod (68), and the output port of the argon tank (2) is located between the inlet circular plate (691) and the outlet circular plate (692).

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