Welding machine and welding method for multiple layers of foil

Abstract

The invention discloses welding machine for multiple layers of foil. The welding machine for the multiple layers of foil comprises an upper punch which vertically moves up and down, an upper heating assembly fixedly connected with the upper punch, a lower heating assembly fixedly arranged under the upper heating assembly, a bottom plate located at the lower portion of the lower heating assembly tosupport the lower heating assembly, a protective atmosphere box arranged at the outer portions of the upper heating assembly and the lower heating assembly in a sleeving manner and the upper portionof the bottom plate, the bottom of the protective atmosphere box is closed through the bottom plate, and the upper punch stretch into the protective atmosphere box from the top of the protective atmosphere box. Above all, protective gas with the pressure being larger than the atmosphere pressure is led into the protective atmosphere box, and the phenomenon that air enters the protective atmospherebox, and an oxidation reaction is generated when the multiple layers of foil is heated is prevented; and the multiple layers of foil is put on the lower heating assembly, when the upper heating assembly and the lower heating assembly are combined, the multiple layers of foil between the upper heating assembly and the lower heating assembly is heated and pressurized, and the multiple layers of foil can be welded into composite foil.

Description

technical field [0001] The invention belongs to the technical field of mechanical heating equipment, in particular to a multilayer foil welding machine and a welding method. Background technique [0002] The common preparation method of single-layer metal foil is flat roll strip rolling. Softer metals such as aluminum foil and tin foil are usually rolled by four or two rolls; for metals with high deformation resistance such as copper, nickel, titanium and tungsten, Foils such as molybdenum are rolled by rolling mills with high rigidity and thin roll diameters, and foils with a single layer thickness of 0.001mm can be rolled. In addition to the rolling method, the industry also uses the electrolytic deposition method to manufacture copper foil for printed circuits and the vacuum evaporation method to manufacture aluminum foil for packaging. [0003] By fusing foils of different materials together, a composite foil with better comprehensive performance can be obtained. To pr...

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Problems solved by technology

[0004] However, the device and rolling method for producing single-layer metal foil are not suitable for the welding of multi-layer foil because they cannot maintain heat for a long time and maintain pressure.

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