| 摘要 |
The present invention relates to an apparatus for lubricating a sleeve for a plunger wherein a plunger reciprocally slides inside a sleeve for inserted with an extrudable material. The apparatus for lubricating a sleeve for a plunger includes: an oil inlet which penetrates the sleeve from the top through the inside, and which injects a lubricating oil into the sleeve; and oil grooves which is formed on the inner circumference of the sleeve, and which is dent, so as for the lubricating oil injected from the oil inlet can flow along the inner circumference. Therefore, by forming ingressions on the oil groove formed on the inner circumference of the sleeve and supplying the lubricating oil to the sliding portion between the sleeve and a plunger, the performance of lubrication can be improved and the consumption of the lubricating oil can be reduced at the same time. |
