Tensioning belt pulley forming mould

Abstract

The invention relates to a tensioning belt pulley forming mould which comprises a working table. A lower mould is fixedly arranged on the working table; a stand column is fixedly arranged on the working table; an installation frame is slidably arranged on the stand column and is fixedly connected with the working table through an air cylinder; and when a belt pulley is forged by utilizing metal powder, a pressed shape is formed by pressing powder, and inner holes cannot be completely eliminated, so that the strength and the toughness are poor. According to the tensioning belt pulley forming mould provided by the invention, an upper mould is arranged on the installation frame through a rotary ring, a through hole is formed in the upper mould in a penetrating way, a stirring rod is slidablyarranged in the through hole and can be rotatably arranged in a fixed ring, the stirring rod is connected with an output shaft of a rotary motor, after a raw material is poured under the lower mould,the rotary ring rotates to drive the upper mould to rotate, the upper mould drives the stirring rod to rotate, and the rotary motor drives the stirring rod to self-rotate, so that the stirring rod canuniformly stir the raw material, and the occurrence of the phenomenon of non-uniformity of density of the pressed shape is prevented.

Description

technical field [0001] The invention relates to the technical field of pulleys, in particular to a molding die for tensioning pulleys. Background technique [0002] Tensioners are belt tensioning devices used in automotive drivetrains. The tensioner is mainly composed of a fixed shell, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring bushing, etc., and can automatically adjust the tension according to the different degrees of tension of the belt, making the transmission system stable, safe and reliable. [0003] When the pulley is forged with metal powder, the internal pores cannot be completely eliminated in the green compact formed by powder pressing, so the strength and toughness are poor. Therefore, we propose a tensioning pulley forming die to solve the above problems. Contents of the invention [0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a tensioning belt pu...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a tensioning belt pulley molding die, which effectively solves the problem that the internal pores of the compact formed by pressing the belt pulley due to powder pressing during forging with metal powder cannot be completely eliminated, so The problem of poor strength and toughness

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