Rolling-type tightener

Abstract

The invention relates to a rolling-type tightener, comprising a roller, a pin, a piston telescoping rod, an oil nozzle, a spacer pin, a dustproof loop, a spring, a tightener piston barrel, a rear end cap and a pedestal. The rolling-type tightener is characterized in that the roller and the pin are arranged on a front end of the piston telescoping rod; the piston telescoping rod is provided with a spacing groove; the dustproof loop is fixed on a front end of the tightener piston barrel; a spring is arranged in the tightener piston barrel; the rear end cap is arranged at a rear portion and is processed with a steam vent; the spacer pin is fixed on the piston telescoping rod; the oil nozzle is arranged at a front end of the tightener piston barrel and parallel with the spacer pin; and the tightener piston barrel and the pedestal are fixedly connected on a side surface of a stand of a sand box roller. The rolling-type tightener has characteristics of flexible movement, energy saving, environmental protection, reliable positioning and low failure rate.

Description

technical field [0001] The invention relates to a rolling tensioner, in particular to a rolling tensioner which ensures accurate positioning and no slippage of a sand box when it moves and stops, and belongs to the technical field of casting and molding sand box positioning. Background technique [0002] In the foundry industry, the sand box of automatic molding equipment is the main tooling for containing sand molds. After the mold is finished, it needs to be moved out of the main machine by the push mechanism and contact with the wheels of the molding track, resulting in sliding and mutual interference between equipment. For this reason, many manufacturers The manufacturer adopts the method of oil cylinder positioning or cylinder positioning, and there are as many as several positions, and both the oil cylinder and the cylinder are prone to leaking, leaking, and then there are problems of energy waste and environmental pollution caused by noise caused by valve reversing...

AI Technical Summary

Problems solved by technology

[0002] In the foundry industry, the sand box of automatic molding equipment is the main tool for containing sand molds. After the mold is finished, it needs to be moved out of the main machine by the push mechanism and contact with the wheels of the molding track, resulting in sliding and mutual interference between equipment. For this reason, many manufacturers The manufacturer adopts the method of oil cylinder positioning or cylinder positioning, and there are as many as several positions, and both the oil cylinder and the cylinder are prone to leakage, emission, and leakage, which leads to energy waste and environmental pollution caused by noise caused by valve reversing.

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