Method and equipment thereof for buckling-riveting outer sleeve of push-pull flexible shaft

Abstract

The invention discloses a method and equipment thereof for buckling-riveting an outer sleeve of a push-pull flexible shaft, which are used for automobiles or engineering machinery and the like. Through the method and the equipment, an inner hole of an inner lining tube can be effectively prevented from deformation, the tensile force bearing capacity of a pipe joint is improved, and the service life of the push-pull flexible shaft is prolonged. The method comprises the following steps of: inserting the inner lining tube of a pressure hose inserted into a sleeve joint and placing the sleeve joint onto a buckling-riveting mold; starting a hydraulic system, making an external mold axially move to force an elastic mold pressing element set, so that mold pressing elements are radically retracted to rivet and press the sleeve joint; and changing a direction, making a piston rod of an oil cylinder drive the external mold to reversely move, expanding the elastic mold pressing element set and pulling a core rod out. The buckling-riveting equipment comprises the hydraulic system, the buckling-riveting mold, a stander and the like, wherein the buckling-riveting mold is provided with the external mold with an inner taper hole and the elastic mold pressing sheet set formed into an outer conical surface; springs are arranged between every two mold sleeves; the elastic mold pressing element set is in contact with a stopper; the piston rod of the oil cylinder is connected with the external mold; and a core pulling device comprising a cylinder and the core rod is arranged axially.

Description

technical field [0001] The invention relates to a riveting method and equipment for push-pull type flexible shaft outer tube buckle and riveting used in automobiles or engineering machinery. Background technique [0002] At present, the riveting of pressure-resistant hoses and metal pipe joints for automobiles and construction machinery is done by punching and riveting technology, which is divided into upper and lower molds for riveting. The shape of the upper and lower molds is hexagonal or octagonal, and the lower mold is fixed on the static lower mold base. Upper, the upper mold is fixed on the movable upper mold base. When the pressure-resistant hose and the metal pipe joint are riveted, the upper mold base moves downward to impact the sleeve joint, causing the sleeve joint to produce plastic deformation and squeeze the pressure-resistant hose , so that the pressure-resistant hose and the metal pipe joint are tightly connected and can withstand high tension. When punchi...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of one-way punching and riveting force, short punching time, deformation of the inner hole of the lining pipe, low tensile force of the pipe joint, and short service life of the push-pull flexible shaft, the invention provides a buckle riveting method for the outer tube of the push-pull flexible shaft

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