Relay shell mold

Abstract

The invention relates to the technical field of relay production, and particularly discloses a relay shell mold which comprises an upper mold and a lower mold, the lower mold is arranged at the bottomof the upper mold, an upper mold base is arranged at the top of the upper mold, the top of the upper mold base is connected with one ends of piston rods of multiple pressing air cylinders, and the pressing air cylinders are arranged on a top plate. The bottom of the top plate is connected with one ends of piston rods of a plurality of lifting cylinders which are symmetrically distributed on the left and right sides of a base; a lower mold base is arranged at the bottom of the lower mold, a supporting table is arranged at the bottom of the lower mold base, the bottom of the supporting table isarranged on the base, an upper buffer plate is arranged in the supporting table, the upper buffer plate is arranged at the bottom of the lower mold base, and a plurality of vertically-arranged buffersprings are evenly distributed at the bottom of the upper buffer plate. The supporting table is mounted at the bottom of the lower mold, the upper buffer plate, the buffer springs and a lower bufferplate in the supporting table play a role in buffering impact borne by the lower mold and the lower mold base, and mold displacement is avoided.

Description

technical field [0001] The invention relates to the technical field of relay production, in particular to a relay shell mold. Background technique [0002] The relay is an electric control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity (excitation quantity) meets the specified requirements. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). Usually used in automatic control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. [0003] Most of the relay casings are made of injection molding material such as PBT. The production of the casing needs to use an injecti...

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Problems solved by technology

[0003] Most of the relay casings are made of injection molding material such as PBT. The production of the casing requires the use of injection molds for production. However, when the current mold is clamped, the pressure generated is relatively high, which will easily cause the mold to shift, affecting the processing of the casing. If the mold is not closed tightly enough, it will cause inconvenience to the processing

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