Hot shaping method for cabinet edges in circular arc and dedicated dies

Abstract

A thermal forming method for the arc corner includes welding two edges of the adjacent members to form a right-angle corner, puttnig it in a dedicated die set, heating while compressing to become an arc corner, and cooling. Said dedicated die set is composed of two dies with electric heater, one having internal arc shape and another having external arc shape.

Description

technical field [0001] The invention relates to a thermoforming method for an arc cabinet opening in a freezer. Background technique [0002] At present, the corners formed by the butt joints of adjacent frames of extruded profiles of refrigerators (especially the cabinets of top-opening refrigerators) have two types of inner and outer corners, one of which is a right-angle method, which has the advantage of processing the cabinet mouth. The process is simple and the cost is low. The disadvantage is that the processing technology of the evaporator is complicated. Since the inner and outer corners of the four corners of the cabinet mouth are all right angles, the four corners of the cabinet inner tank must also be right angles, so the evaporator is arranged in the inner tank. It is necessary to adopt an eccentric large arc transition at the corner to prevent the serious deformation of the tube body due to the right angle transition, and at the same time cause the evaporator a...

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Problems solved by technology

[0002] At present, the corners formed by the butt joints of adjacent frames of extruded profiles of refrigerators (especially the cabinets of top-opening refrigerators) have two types of inner and outer corners, one of which is a right-angle method, which has the advantage of processing the cabinet mouth. The process is simple and the cost is low. The disadvantage is that the processing technology of the evaporator is complicated. Since the inner and outer corners of the four corners of the cabinet mouth are all right angles, the four corners of the cabinet inner tank must also be right angles, so the evaporator is arranged in the inner tank. It is necessary to adopt an eccentric large arc transition at the corner to prevent serious deformation of the tube body due to the right-angle transition, and at the same time cause the evaporator and the corner of the inner tank to have a complicated sealing process and unreliable sealing, which increases the material cost of the evaporator; another One is the arc angle method, which is formed by bonding small injection-molded arc corner pieces on the basis of the above-mentioned right angle method. Although it is beneficial to the molding process of the evaporator and the sealing process of the evaporator at the corner of the cabinet, it makes the The bonding between the evaporator and the inner tank is more effective, and the cooling capacity is guaranteed, but the processing method of the inner and outer rounded corners is complicated, the cost is high, and the overall feeling is poor

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