Production facility and process for super-low tensibility poly V-belt cord

Abstract

The invention relates to a production facility and process for a super-low tensibility poly V-belt cord. A stretching device is arranged in a drying oven, and the stretching device is characterized in that a stretching wheel group is formed by two groups of stretching wheels in left and right or front and back arrangement; each stretching wheel group is composed of 10-25 stretching wheels left and right or front and back arranged in two rows; a tensioner controlling the tension of the cord among the stretching wheels is arranged between the stretching wheel groups; the front part of one stretching wheel group is provided with a paying off wheel or a winding up wheel; the rear part of the other stretching wheel group is provided with a paying off wheel or a winding up wheel; and the winding up wheels provide power for driving the stretching wheels, the paying off wheels and the winding up wheels to rotate. The process comprises the following concrete steps: 1) preparation; 2) heating; and 3) stretching. In the invention, the measures such as forced stretching, re-stretching and the like are carried out on the cord, so that the stretching ratio is greatly reduced and the cord can be contracted after being heated at a certain temperature; and the elongation at break of the manufactured poly V-belt is controlled to be below 7% and the manufactured poly V-belt can be used for sixty thousand miles.

Description

technical field [0001] The invention belongs to the technical field of transmission belts, in particular to a production equipment and a production process of an ultra-low elongation poly-V belt cord. Background technique [0002] At present, polyester cords are used as frame materials for edge-trimmed V-belts produced at home and abroad. The elongation of general polyester cord is about 8%-11%. Trimmed V-belts are used in automobiles, and the distance is not adjusted within 20,000 kilometers. Due to the wear of the wedge surface and the elongation of the skeleton material after use, the edge-cut V-belt will be stretched and slipped even if it is used for 20,000 kilometers, or even less than 20,000 kilometers. The long and expensive aramid fibers also need to adjust the distance due to the wear of the belt body, which increases the cost of use and is inconvenient to use. Contents of the invention [0003] The object of the present invention is to provide a production pr...

AI Technical Summary

Problems solved by technology

Due to the wear of the wedge surface and the elongation of the skeleton material after use, the edge-cut V-belt will be stretched and slipped even if it is used for 20,000 kilometers, or even less than 20,000 kilometers. The long and expensive aramid fiber also needs to be adjusted due to the wear of the belt body, which increases the cost of use and is inconvenient to use

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