Back argon filling auxiliary device for butt welding of metal plates

Abstract

A metal plate butt welding back argon filling auxiliary device comprises a long-strip-box-shaped gas collecting base (1), a splitter plate (2) installed on the top face of the middle of the gas collecting base, workpiece pressing plates (3) symmetrically installed on the surface of the gas collecting base and located on the two sides of the splitter plate, and a gas inlet guide pipe (4) arranged on the side wall of the gas collecting base. The top face of the splitter plate is flush with the top face of the gas collection base, a splitter groove (2a) is formed in the top face of the splitter plate in the length direction, and splitter holes (2b) are evenly formed in the splitter groove. Kidney-shaped holes (3a) are formed in the two ends of the workpiece pressing plate, the workpiece pressing plate is fixed to the top face of the gas collection base through bolts (6) penetrating through the kidney-shaped holes, and the bottom face of the workpiece pressing plate is flush with the top face of the gas collection base. And the inner side of the workpiece pressing plate is a groove surface. The device can ensure the back forming and quality of the welding seam of the plate-shaped workpiece, is simple and reliable in structure and convenient to operate, can improve the yield of the welding seam of the plate-shaped workpiece, and reduces the welding deformation of a weldment.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tools for welding metal plates, specifically to a back argon purging auxiliary device used for butt welding of metal plates. Background Technology

[0002] Argon arc welding is a welding method that uses argon gas as a shielding gas, which can effectively solve the problem of weld oxidation at high temperatures. However, currently, when butt welding metal plates, argon protection can only be applied to the front side of the weld. This argon protection alone cannot effectively solve the problem of weld oxidation. Therefore, there is a need for a device that can assist in applying argon protection to the back side of the weld. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide an argon back filling auxiliary device for butt welding of metal plates, which can fill the back of the weld with argon gas during butt welding to effectively isolate air, ensure that the weld pool and high-temperature weld metal are not oxidized, and thus ensure the welding quality.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] An auxiliary device for back-side argon purging during butt welding of metal plates includes a long, box-shaped gas collecting base, a flow divider plate installed on the top surface of the gas collecting base along its length, workpiece pressure plates symmetrically installed on the surface of the gas collecting base and located on both sides of the flow divider plate, and an inlet duct disposed on the side wall of the gas collecting base. A notch is formed at the middle of both ends of the gas collecting base, and the two ends of the flow divider plate are embedded in the notch and fixed to the top surface of the gas collecting base by countersunk hexagonal screws. The top surface of the flow divider plate is flush with the top surface of the gas collecting base. A flow divider groove is formed along the length of the top surface of the flow divider plate, and flow divider holes are evenly distributed on the flow divider groove. The two ends of the workpiece pressure plate have oblong holes, and the two ends of the workpiece pressure plate are fixed to the top surface of the gas collecting base by bolts passing through the oblong holes. The bottom surface of the workpiece pressure plate is flush with the top surface of the gas collecting base. The inner side of the workpiece pressure plate is a beveled surface.

[0006] Furthermore, the inner end of the air intake duct has a threaded section on the outside, and a threaded hole is provided at one end of the air collection base. The air intake duct is screwed into the threaded hole, and a flange is machined on the outer end of the air intake duct as an air intake hose interface.

[0007] Furthermore, the workpiece pressure plate has a thickness of 12mm and a bevel angle of 60°.

[0008] Using this utility model, two metal plates that need to be butt-welded can be placed under the workpiece pressure plate, with the backs of the weld seams of the two metal plates aligned and placed in the middle of the diversion plate. The steel plates are then tightened by tightening the bolts at both ends, and the amount of welding deformation is controlled. Then, argon gas is connected to the gas inlet duct, so that the gas collecting base is filled with argon gas. The argon gas evenly protects the high-temperature weld metal through the diversion holes and diversion grooves until the welding work is completed.

[0009] This invention, when performing butt welding of metal plates using argon arc welding, effectively isolates the back of the weld seam from air intrusion by filling the back of the weld with argon gas. This ensures that the weld pool and high-temperature weld metal are not oxidized by air, and reduces welding deformation, thereby improving welding quality and meeting high-standard industrial welding requirements. This invention has a simple and reliable structure, is easy to operate, and can improve the yield rate and reduce production costs when butt welding plates using argon arc welding. Attached Figure Description

[0010] Figure 1 This is a front view schematic diagram of the present invention;

[0011] Figure 2 for Figure 1 The left view;

[0012] Figure 3 for Figure 1 Top view;

[0013] Figure 4 This is a perspective view of the present utility model;

[0014] Figure 5 This is a top enlarged view of the diverter plate of this utility model. Detailed Implementation

[0015] The contents of this utility model will be further described below with reference to the accompanying drawings.

[0016] like Figures 1-4 As shown, an argon-filled back-side auxiliary device for butt welding of metal plates includes a long, box-shaped gas collecting base 1, a flow divider plate 2 installed on the top surface of the gas collecting base in the middle along the length of the gas collecting base, workpiece pressure plates 3 symmetrically installed on the surface of the gas collecting base and located on both sides of the flow divider plate, and an air inlet duct 4 disposed on the side wall of the gas collecting base. The inner end of the air inlet duct 4 has a threaded section on the outside, and a threaded hole is opened at one end of the gas collecting base. The air inlet duct is screwed into the threaded hole, and the outer end of the air inlet duct is machined with 1 to 3 flanges as an air inlet hose interface. The flanges can prevent the air inlet hose from falling off.

[0017] A notch is provided at the middle of both ends of the gas collecting base. The two ends of the diverter plate 2 are embedded in the notch and fixed to the top surface of the gas collecting base by countersunk hexagonal screws 5. The top surface of the diverter plate is flush with the top surface of the gas collecting base. Figure 5As shown, a flow-dividing groove 2a is formed along the length of the top surface of the flow-dividing plate, and flow-dividing holes 2b are evenly distributed on the flow-dividing groove. The workpiece pressure plate 3 has oblong holes 3a at both ends, and the two ends of the workpiece pressure plate are fixed to the top surface of the gas collecting base by bolts 6 passing through the oblong holes. The bottom surface of the workpiece pressure plate is flush with the top surface of the gas collecting base; the inner side of the workpiece pressure plate is a beveled surface. In this embodiment, the workpiece pressure plate 3 has a thickness of 12mm, and its bevel angle is 60°.

[0018] In this embodiment, the gas collecting base 1 is manufactured from a single piece of 6-series aluminum-magnesium alloy using a CNC machine tool. It is 350mm long, 150mm wide, and 100mm high. The workpiece pressure plate is 350mm long, 60mm wide, and 12mm thick. The diversion plate is made of copper rod, with a length of 350mm, a width of 30mm, and a thickness of 20mm. The diversion groove is 5mm deep, 300mm long, and 20mm wide, and the diversion hole diameter is 2-3mm.

[0019] When using this utility model for auxiliary argon arc welding of metal plates, two metal plates with a thickness of 0.5-50mm to be welded can be placed under the workpiece pressure plates 3 on both sides, with the backs of the weld seams of the two metal plates aligned in the middle of the diversion plate 2. Then, the metal plates to be welded are pressed and fixed with bolts 6, and argon gas is introduced through the gas inlet pipe 4 to fill the gas collecting base 1 with argon gas, and welding can then be carried out. During the welding process, the back of the weld seam is filled with argon gas, which can effectively isolate the back air intrusion, ensure that the weld pool and high-temperature weld metal are not oxidized by air, and improve the welding quality.

[0020] This utility model is mainly applicable to the welding of metal plates that require argon gas backing. It can be used in actual product production, as well as for weldability experiments, process research, welding process evaluation, etc. It is especially suitable for schools to use for welding skills teaching and training.

Claims

1. An auxiliary device for back-side argon purging during butt welding of metal plates, characterized in that, The system includes a long, box-shaped gas collecting base (1), a flow divider plate (2) installed on the top surface of the gas collecting base in the middle along the length of the gas collecting base, workpiece pressure plates (3) symmetrically installed on the surface of the gas collecting base and located on both sides of the flow divider plate, and an air inlet duct (4) set on the side wall of the gas collecting base; a notch is provided in the middle of both ends of the gas collecting base, and the two ends of the flow divider plate (2) are embedded in the notch and fixed to the top surface of the gas collecting base by countersunk hexagonal screws (5). The top surface of the flow divider plate is flush with the top surface of the gas collecting base. A flow divider groove (2a) is provided along the length of the top surface of the flow divider plate, and flow divider holes (2b) are evenly distributed on the flow divider groove; the two ends of the workpiece pressure plate (3) are provided with waist-shaped holes (3a), and the two ends of the workpiece pressure plate are fixed to the top surface of the gas collecting base by bolts (6) passing through the waist-shaped holes. The bottom surface of the workpiece pressure plate is flush with the top surface of the gas collecting base; the inner side of the workpiece pressure plate is a beveled surface.

2. The argon-filled backside auxiliary device for butt welding of metal plates according to claim 1, characterized in that, The inner end of the air intake duct (4) has a threaded section, and a screw hole is provided at one end of the air collection base. The air intake duct is screwed into the screw hole, and a flange is machined at the outer end of the air intake duct as an air intake hose interface.

3. An argon-filled backside auxiliary device for butt welding of metal plates according to claim 1 or 2, characterized in that, The thickness of the workpiece pressure plate (3) is 12mm, and the bevel angle of the bevel surface is 60°.

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