Novel lubricating and sealing structure for copper bush of press balance cylinder

Abstract

The invention discloses a novel lubricating and sealing structure for a copper bush of a press balance cylinder, and belongs to the technical field of presses. The novel lubricating and sealing structure consists of a balance cylinder block 7, a piston, a bearing block 2, the copper bush 3 and a piston rod 5, wherein the bearing block 2 is fixed on a lower cover 6 of the balance cylinder block 7; the jointed part of the bearing block 2 and the lower cover 6 is provided with a corresponding step; a sealing ring 10 is arranged in a stepped hole of the jointed part of the bearing block 2 and the lower cover 6; the bearing block 2 is connected with and fixed on the lower cover 6 of the balance cylinder through a screw; the copper bush 3 is fixed in a hole of the bearing block 2 through a set screw; the lower part of the interior of the bearing block 2 below the copper bush 3 is provided with a seal groove; an oil seal 1 is arranged in the seal groove; the bearing block 2 and the copper bush 3 are provided with an oil feed hole 8 and an oil return hole 9; and lube oil enters the copper bush 3 from the oil feed hole 8 of the bearing block 2 to be stored in an oil tank 4 and flows out from the copper bush 3 through the oil return hole 9 of the bearing block 2 after the oil tank is full to form circulating lubrication.

Description

technical field [0001] The invention relates to a lubricating and sealing structure of a copper sleeve of a press balance cylinder, in particular to a novel lubricating and sealing structure of a copper sleeve of a press balance cylinder. It belongs to the technical field of presses. Background technique [0002] The balance cylinder in the press is used to balance the weight of the slider and the upper die to avoid additional impact during the working process. The copper sleeve in the existing balance cylinder is set in the lower cover of the balance cylinder, the piston rod passes through the lower cover and the copper sleeve in the lower cover, and a sealing ring is also set in the lower cover above the copper sleeve. The original design is to let the lubricating oil It penetrates into the copper sleeve along the outer wall of the piston rod to lubricate the copper sleeve, but since the gas is sealed by the sealing ring on the copper sleeve, it is actually difficult for ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems such as short service life of the balance cylinder caused by the existing balance cylinder copper bushing caused by poor lubrication, such as seizure, abnormal sound during movement, etc., to provide a solution that is not only beneficial to processing, but also beneficial to improvement. Lubrication conditions, and easy to replace the sealing ring, which is conducive to improving the service life of the balance cylinder and the overall performance of the press A new type of copper sleeve lubrication and sealing structure for the balance cylinder of the press

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