An adjustable curved gas shield for welding

Abstract

The utility model discloses a kind of adjustable bending welding gas protection box;Belong to welding technical field;Its technical key points include the linear array distribution of several box body units from left to right, the left side of the box body unit is fixedly connected with movable head, the right side of the box body unit is equipped with the movable slot compatible with movable head, the movable head left end is arranged in arc, the inner wall of the movable slot is equipped with the arc structure compatible with movable head left end arc surface design.The utility model is by the structure design of the cooperation of several box body units with movable head and movable slot, half-round connecting plate and connecting shaft hinged, realize the flexible adjustment of overall bending angle, can adapt to the welding demand of different diameter pipe material, different radian plate and complex curved surface workpiece, without for each kind of workpiece custom-made special protection box, effectively reduce production preparation time and material cost, significantly improve the versatility of equipment.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically an adjustable and bendable gas protection box for welding. Background Technology

[0002] In the field of metal welding, especially in the welding of special materials such as titanium and nickel, the weld area is highly susceptible to reaction with oxygen and nitrogen in the air at high temperatures, leading to defects such as oxidation and embrittlement, which seriously affect the weld quality. To avoid such problems, a gas protection device is usually required. This device continuously introduces an inert gas (such as argon) to isolate the weld from the air, providing a protective atmosphere and reducing the weld temperature. Currently, most welding protection boxes commonly used in the industry are fixed structures, with shapes and sizes matched to specific welding scenarios, which can meet the gas protection needs of conventional welding to a certain extent.

[0003] However, traditional fixed protective boxes have significant limitations: due to the large differences in weld morphology among different welded workpieces (such as pipes of different diameters and plates of different curvatures), each workpiece often requires a custom-made protective box mold, which not only increases production preparation time and material costs but also limits the versatility of the equipment. Furthermore, for welding complex curved surfaces or workpieces with varying diameters, fixed protective boxes cannot tightly fit the weld area, easily leading to gas leakage or insufficient protection, thus affecting the stability of weld quality. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an adjustable bending gas shielding box for welding. This technical solution overcomes the significant limitations of traditional fixed shielding boxes mentioned in the background art: Due to the significant differences in weld morphology among different welding workpieces (such as pipes of different diameters or plates of different curvatures), each workpiece often requires a custom-made shielding box mold, which not only increases production preparation time and material costs but also limits the versatility of the equipment. Furthermore, for welding complex curved surfaces or workpieces with varying diameters, fixed shielding boxes are difficult to fit tightly against the weld area, easily leading to gas leakage or insufficient protection, thus affecting the stability of weld quality.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable bending gas shielding box for welding includes several box units arranged in a linear array from left to right. A movable head is fixedly connected to the left side of each box unit. A movable groove adapted to the movable head is provided on the right side of each box unit. The left end of the movable head is arc-shaped. The inner wall of the movable groove has an arc-shaped structure adapted to the arc-shaped surface of the left end of the movable head. A first through groove communicating with the inner cavity of the box unit is opened on the left side of the movable head. A second through groove communicating with the inner cavity of the box unit is opened within the movable groove. Semi-circular connecting plates are fixedly connected to the front and rear sides of the right end of each box unit. Both semi-circular connecting plates are hinged to the movable head on the adjacent box unit on the right side via connecting shafts. A movable sealing assembly is provided between the movable head and the adjacent movable groove. An argon gas inlet pipe is connected to the top of one of the box units. An installation assembly is hinged to the left side of the leftmost box unit. The right side of the rightmost box unit is a sealing surface. A gas outlet is provided at the bottom of each box unit.

[0007] Preferably, the movable sealing assembly includes a first sealing gasket fixedly connected to the arc-shaped surface at the left end of the movable head, and a second sealing gasket fixedly connected in the movable groove. Both the first and second sealing gaskets are made of wear-resistant silicone rubber, and their contact surfaces are complementary arc-shaped, maintaining a tight fit during bending adjustment.

[0008] Preferably, the mounting assembly includes a mounting block hinged to the left side of the leftmost housing unit. A semi-circular clamp is hinged to the left side of the mounting block. A semi-circular groove adapted to the semi-circular clamp is provided on the left side of the mounting block. A fixing bolt is provided at the free end of the semi-circular clamp. A threaded hole adapted to the fixing bolt is provided at the corresponding position on the left side of the leftmost housing unit. A fastening screw is threadedly connected to the middle of the semi-circular clamp.

[0009] Preferably, the housing unit is made of thin copper or stainless steel sheet.

[0010] Compared with the prior art, this utility model provides an adjustable bending gas protection box for welding, which has the following advantages:

[0011] 1. This utility model achieves flexible adjustment of the overall bending angle by adopting a structural design in which several box units are matched with movable heads and movable slots, and semi-circular connecting plates and connecting shafts are hinged. It can adapt to the welding needs of pipes of different diameters, plates of different curvatures and complex curved surface workpieces. There is no need to customize special protective boxes for each workpiece, which effectively reduces production preparation time and material costs and significantly improves the versatility of the equipment.

[0012] 2. This utility model, by setting up a movable sealing component consisting of a first sealing gasket and a second sealing gasket made of wear-resistant and high-temperature resistant silicone rubber, ensures that the box unit remains tightly fitted during bending and adjustment. At the same time, combined with the vent design at the bottom of the box unit, inert gas can fully cover and tightly fit the weld area, reducing gas leakage. This solves the problem of insufficient protection for complex workpieces by traditional fixed protective boxes and ensures the stability of welding quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 In this utility model Figure 1 A magnified structural diagram at point A;

[0015] Figure 3 This is a cross-sectional view of the box unit in this utility model;

[0016] Figure 4 In this utility model Figure 3 A magnified structural diagram at point B.

[0017] The following are the labels in the diagram: 1. Box unit; 2. Movable head; 3. Movable groove; 4. First through groove; 5. Second through groove; 6. Semi-circular connecting plate; 7. Argon inlet pipe; 8. Mounting assembly; 801. Mounting block; 802. Semi-circular clamp; 803. Semi-circular groove; 804. Fixing bolt; 805. Fastening screw; 9. Vent hole; 10. First sealing gasket; 11. Second sealing gasket. Detailed Implementation

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Example 1

[0020] Please refer to Figures 1 to 4As shown, an adjustable bending gas shielding box for welding includes several box units 1 arranged in a linear array from left to right. A movable head 2 is fixedly connected to the left side of the box unit 1, and a movable groove 3 adapted to the movable head 2 is provided on the right side of the box unit 1. The left end of the movable head 2 is arc-shaped, and the inner wall of the movable groove 3 is provided with an arc-shaped structure adapted to the arc-shaped surface of the left end of the movable head 2. A first through groove 4 communicating with the inner cavity of the box unit 1 is opened on the left side of the movable head 2, and a groove 3 communicating with the inner cavity of the box unit 1 is opened in the movable groove 3. The second through slot 5 is connected to the front and rear sides of the right end of the box unit 1, and the two semi-circular connecting plates 6 are fixedly connected. The two semi-circular connecting plates 6 are hinged to the movable head 2 on the adjacent box unit 1 on the right side through the connecting shaft. A movable sealing component is provided between the movable head 2 and the adjacent movable slot 3. The top of one of the box units 1 is connected to the argon gas inlet pipe 7. The leftmost box unit 1 is hinged to the left side of the mounting component 8. The right side of the rightmost box unit 1 is the sealing surface. Each box unit 1 has an air outlet 9 at the bottom.

[0021] Those skilled in the art will understand that several box units 1 are adapted to the movable groove 3 of the adjacent box unit 1 on the right side through the movable head 2 on the left side, and are hinged with the semi-circular connecting plates 6 on the front and rear sides and the connecting shaft, so that the overall bending angle can be flexibly adjusted; the first through groove 4 of the movable head 2 and the second through groove 5 of the movable groove 3 ensure that the inner cavity of each box unit 1 is connected, and the argon gas introduced by the argon gas inlet pipe 7 is discharged from the bottom gas outlet 9 through the inner cavity to cover the weld. The leftmost mounting component 8 is used to fix the device, and the rightmost sealing surface prevents gas leakage.

[0022] The modular hinge structure enables multi-angle adjustment, adapting to pipes of different diameters, curved plates, and complex curved workpieces. It eliminates the need for customized molds, improving versatility and reducing costs.

[0023] Example 2

[0024] Furthermore, the movable sealing assembly includes a first sealing gasket 10 fixedly connected to the arc-shaped surface at the left end of the movable head 2, and a second sealing gasket 11 fixedly connected in the movable groove 3. Both the first sealing gasket 10 and the second sealing gasket 11 are made of wear-resistant and high-temperature resistant silicone rubber, and their contact surfaces are complementary arc-shaped, maintaining a tight fit when bending and adjusting.

[0025] Those skilled in the art will understand that in the movable sealing assembly, the first sealing gasket 10 on the arc-shaped surface of the left end of the movable head 2 and the second sealing gasket 11 in the movable groove 3 are made of wear-resistant and high-temperature resistant silicone rubber, and their contact surfaces are complementary arc-shaped, ensuring a tight fit during bending and adjustment of the housing unit 1 to prevent argon leakage. The dynamic sealing performance is stable, ensuring that argon gas continuously and effectively covers the weld during adjustment, preventing high-temperature oxidation and improving the stability of welding quality.

[0026] Example 3

[0027] Furthermore, the mounting assembly 8 includes a mounting block 801 hinged to the left side of the leftmost housing unit 1. A semi-circular clamp 802 is hinged to the left side of the mounting block 801. A semi-circular groove 803 adapted to the semi-circular clamp 802 is provided on the left side of the mounting block 801. A fixing bolt 804 is provided at the free end of the semi-circular clamp 802. A threaded hole adapted to the fixing bolt 804 is provided at the corresponding position on the left side of the leftmost housing unit 1. A fastening screw 805 is threadedly connected to the middle of the semi-circular clamp 802.

[0028] Those skilled in the art will understand that the mounting block 801 of the mounting assembly 8 is hinged to the leftmost box unit 1, and the relative position of the device and the nozzle can be adjusted according to the welding torch angle; the semi-circular clamp 802 on the left side of the mounting block 801 cooperates with the semi-circular groove 803, surrounds the barrel behind the argon arc welding torch nozzle, and is screwed into the threaded hole at the corresponding position of the leftmost box unit 1 by the fixing bolt 804 at the free end, so as to achieve the initial fixation of the clamp and the barrel. Then, the fastening screw 805 in the middle of the semi-circular clamp 802 is tightened so that the inner wall of the clamp fits tightly against the surface of the barrel, thus completing the rigid connection between the device and the welding torch.

[0029] The semi-circular clamp 802 and the fastening screw 805 work together to securely install the device behind the argon arc welding torch nozzle, ensuring that the device moves synchronously with the welding torch and that the argon gas protection area always accurately covers the weld.

[0030] In addition, damping pads are provided at the hinge between the mounting block 801 and the leftmost box unit 1, and at the hinge between the two semi-circular connecting plates 6 and the adjacent movable head 2, for fixing the position after adjusting the angle.

[0031] Example 4

[0032] Furthermore, the housing unit 1 is made of thin copper or stainless steel sheet.

[0033] Those skilled in the art will understand that the housing unit 1 is made of thin copper or stainless steel sheet, which combines good ductility and high temperature resistance while ensuring structural strength. The material properties are suitable for welding scenarios, extending the service life of the device, and the metal material does not easily react with argon gas, ensuring the purity of the protective gas.

[0034] The working principle and usage procedure of this device are as follows: First, based on the weld shape of the workpiece to be welded, adjust the angle between adjacent box units 1 so that the movable head 2 of the left box unit 1 rotates within the movable groove 3 of the right adjacent box unit 1. The device is then bent as a whole using the hinge structure between the semi-circular connecting plates 6 on the front and rear sides of the right end of the box unit 1 and the connecting shaft, until it matches the weld curvature. At this point, the damping pad at the hinge will fix the angle. Next, install the device behind the argon arc welding torch nozzle using the mounting assembly 8: Wrap the semi-circular clamp 802 on the left side of the mounting block 801 around the welding torch barrel, aligning it with the semi-circular groove 803 of the mounting block 801. Then, screw the fixing bolt 804 at the free end of the semi-circular clamp 802 into the threaded hole at the corresponding position on the left side of the leftmost box unit 1 for initial fixation. Finally, tighten the middle part of the semi-circular clamp 802. Secure screw 805 to ensure a tight connection between the device and the welding torch. Then connect the argon inlet pipe 7 to the argon source. Argon gas enters the inner cavity of the corresponding housing unit 1 through the argon inlet pipe 7, and then flows through the first through groove 4 of the movable head 2 and the second through groove 5 of the movable groove 3 through the connected inner cavities of all housing units 1. During this process, the first sealing gasket 10 on the arc-shaped surface of the left end of the movable head 2 and the second sealing gasket 11 in the movable groove 3 are tightly fitted to prevent leakage. Finally, the argon gas is evenly discharged from the vent hole 9 at the bottom of each housing unit 1 and covers the weld area. The sealing surface of the rightmost housing unit 1 further prevents argon gas leakage from the right side. Welding can begin after the argon gas has fully covered the weld. During the welding process, the device moves synchronously with the welding torch to maintain effective protection of the weld. After welding is completed, turn off the argon source, loosen the fixing bolt 804 and the fastening screw 805, and remove the device from the welding torch.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable bending gas shielding box for welding, comprising a plurality of box units (1) arranged in a linear array from left to right, characterized in that, A movable head (2) is fixedly connected to the left side of the box unit (1). A movable groove (3) adapted to the movable head (2) is provided on the right side of the box unit (1). The left end of the movable head (2) is arc-shaped. The inner wall of the movable groove (3) is provided with an arc-shaped structure adapted to the arc-shaped surface of the left end of the movable head (2). A first through groove (4) communicating with the inner cavity of the box unit (1) is opened on the left side of the movable head (2). A second through groove (5) communicating with the inner cavity of the box unit (1) is opened in the movable groove (3). The right end of the box unit (1) Both the front and rear sides are fixedly connected with semi-circular connecting plates (6). Both semi-circular connecting plates (6) are hinged to the movable head (2) on the adjacent box unit (1) on the right side through connecting shafts. A movable sealing assembly is provided between the movable head (2) and the adjacent movable groove (3). The top of one of the box units (1) is connected to an argon gas inlet pipe (7). The leftmost box unit (1) is hinged to an installation assembly (8) on the left side. The rightmost box unit (1) has a sealing surface on the right side. Each box unit (1) has an air outlet (9) at the bottom.

2. The adjustable bending gas shielding box for welding according to claim 1, characterized in that, The movable sealing assembly includes a first sealing gasket (10) fixedly connected to the arc-shaped surface at the left end of the movable head (2), and a second sealing gasket (11) fixedly connected in the movable groove (3). Both the first sealing gasket (10) and the second sealing gasket (11) are made of wear-resistant and high-temperature resistant silicone rubber, and their contact surfaces are complementary arc-shaped, maintaining a tight fit when bending and adjusting.

3. The adjustable bending gas shielding box for welding according to claim 1, characterized in that, The mounting assembly (8) includes a mounting block (801) hinged to the left side of the leftmost box unit (1). A semi-circular clamp (802) is hinged to the left side of the mounting block (801). A semi-circular groove (803) adapted to the semi-circular clamp (802) is opened on the left side of the mounting block (801). A fixing bolt (804) is provided at the free end of the semi-circular clamp (802). A threaded hole adapted to the fixing bolt (804) is opened at the corresponding position on the left side of the leftmost box unit (1). A fastening screw (805) is threadedly connected to the middle of the semi-circular clamp (802).

4. The adjustable bending gas shielding box for welding according to claim 1, characterized in that, The box unit (1) is made of thin copper sheet or stainless steel sheet.

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