Punching and bending die for rear back plate of refrigerator

Abstract

The invention relates to a punching and bending die for a rear back plate of a refrigerator. The punching and bending die for the rear back plate of the refrigerator comprises a lower die base plate, an upper die plate, an upper die base, a lower die ribbed plate, a lower die deck plate, lower blades, a male die base, upper blades, an edge folding base, edge folding strips, a pressing plate, a punch base, punch bodies and a punching column, wherein a punching base is arranged at the top of the lower die deck plate, and a punching cavity is formed in the punching base; the punch base is arranged on the upper die plate, and an injection hole punch is arranged at the bottom of the punch base and provided with a floating pin; an ejection mounting base is arranged on the edge of the top of the lower die deck plate, and an ejection air cylinder is arranged on the outer side of the ejection mounting base; and the ejection mounting base is provided with a supporting rod, and the supporting rod is connected with an ejection rod in a pivoted mode. According to the punching and bending die for the rear back plate of the refrigerator, waste is ejected out rapidly through the ejection rod, the structure is simple, production efficiency is high, and safety is high; edge folding of the rear back plate of the refrigerator is conducted during punching through the upper blades and the lower edge folding strips; the floating pin is arranged on the injection hole punch, and the bottom of the injection hole punch is an oblique surface, so that when big holes are punched, the edges of the punched holes are uniform and not prone to deformation.

Description

technical field [0001] The invention relates to a punching die for a refrigerator backboard, in particular to a punching and bending die for a refrigerator backboard. Background technique [0002] The back panel of the refrigerator is usually made of sheet metal, and the back panel of the refrigerator is usually punched with holes, so it needs to be processed by punching during processing. Existing punching dies for the back panel of refrigerators can only perform simple punching functions, and cannot be folded, and deformation of the back panel is very likely to occur when punching large holes. The existing scraps during the punching of the back panel of the refrigerator need to be blanked manually, which is highly dangerous and low in production efficiency. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a punching and bending die for the back panel of a refrigerator. [0004] The technic...

AI Technical Summary

Problems solved by technology

Existing punching dies for the back panel of refrigerators can only perform simple punching functions, and cannot be folded, and deformation of the back panel is very easy to occur when punching large holes

The existing scraps from the punching of the back panel of the refrigerator need to be blanked manually, which is highly dangerous and low in production efficiency

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