Cylindrical plastic casing with wide ribs arranged inside and welding method of cylindrical plastic casing

Abstract

The invention discloses a cylindrical plastic casing with wide ribs arranged inside. The cylindrical plastic casing comprises a plastic casing body, a shape controlling mechanism and a laser device; the plastic casing body comprises a hollow cylinder, at least one wide rib and at least one groove formed in the inner wall of the cylinder; the edge of the at least one wide rib is placed inside the at least one groove; the shape controlling mechanism comprises at least one shape controlling sleeve piece; the periphery of the cylinder is sleeved with the at least one shape controlling sleeve piece; and the at least one shape controlling sleeve piece corresponds to the at least one wide rib. The invention further discloses a welding method of the cylindrical plastic casing with the wide ribs arranged inside. According to the cylindrical plastic casing and the welding method, the force bearing points of the cylinder in the axial direction are increased by the aid of the wide ribs, so that the possibility is created for increasing component or structure characteristics inside the cylinder; the requirement for the light transmittance of the cylinder material is eliminated, and deformationof the surface of the cylinder due to input heat during welding is reduced; fixture-free welding of the wide ribs can be realized; and the gaps between trapezoidal bulges and the grooves can store overflows formed by thermal expansion of the material during welding, so that deformation of the cylinder can be avoided.

Description

technical field [0001] The invention relates to the technical field of laser transmission welding, in particular to a cylindrical plastic shell with built-in wide ribs and a welding method thereof. Background technique [0002] At present, in the field of household appliances, such as air conditioners and electric water heaters, the casings of electrical appliances are mostly made of metal. The housing made of plastic has the advantages of low cost, corrosion resistance, and various surface treatments, so it has attracted much attention. However, in the actual application process, the core components of the electrical appliances, such as the inner tank of the water heater, the electrical room, and the air outlet of the air conditioner, need to be connected with the casing, and it is difficult to realize the seamless connection between the end cover and the casing. Traditional injection molding and extrusion molding processes are difficult to directly form the connection str...

AI Technical Summary

Problems solved by technology

Moreover, the arc-shaped buckles have the characteristics of circumferential distribution, which makes it difficult to ensure the sealing effect between the barrel body and the end cover

[0005] The patent for invention with the application number CN201210309223.7 discloses a vertical air conditioner, which includes an air guiding part and a casing.

[0006] Due to the lack of stress points, it is difficult to connect the shell with other components by means of mechanical connection

Adhesive bonding generally has the problems of poor stability and complicated process

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