Mechanical forward and reverse wrapping spring device of all-steel giant tire forming machine

Abstract

The invention discloses a mechanical forward and reverse wrapping spring device of an all-steel giant tire forming machine. The mechanical forward and reverse wrapping spring device comprises forward and reverse wrapping rods evenly distributed circumferentially, forward and reverse wrapping springs are connected between the front ends of the adjacent forward and reverse wrapping rods, and a forward and reverse wrapping ring with the diameter changing along with synchronous expanding and contracting of the forward and reverse wrapping rods is formed among the forward and reverse wrapping springs. A large-inner-diameter shaft sleeve and a small-diameter shaft pin connected with the large-inner-diameter shaft sleeve in an inserted mode are arranged in each forward and reverse wrapping spring, wherein the large-inner-diameter shaft sleeve is fixedly installed on one side of the corresponding forward and reverse wrapping rod, and the small-diameter shaft pin is installed on the other side of the corresponding forward and reverse wrapping rod through a flexible connecting structure of a bulb and a spherical surface gland. Reset springs ejecting the bottoms of the bulbs are arranged in the forward and reverse wrapping rods. In the structure, all sections of the forward and reverse wrapping springs are supported by the large-inner-diameter shaft sleeves and the small-diameter shaft pins connected with the large-inner-diameter shaft sleeve in the inserted mode at both the maximum diameter part and the minimum diameter part of the forward and reverse wrapping ring to prevent the forward and reverse wrapping springs from bending and deforming, the overall bending strength of the forward and reverse wrapping ring is effectively ensured, and thus the quality requirement of the forward and reverse wrapping work is met.

Description

technical field [0001] The invention relates to an auxiliary device of a tire building machine, in particular to a mechanical front and back wrapping spring device of an all-steel giant tire building machine. Background technique [0002] The tire building machine is the key equipment for manufacturing tires, and the front and back wrapping device is the core component of the building machine. The shaping effect of the front and back wrapping device is related to the quality of the whole tire. [0003] The traditional positive and negative packaging devices are: [0004] 1. The capsule is wrapped in the front, and the finger shape is reversed. [0005] 2. The finger shape is positively packaged, and the capsule is reversely packaged. [0006] 3. Capsules are packaged positively and capsules are reversed. [0007] The traditional front-to-back wrapping device can meet the requirements of the thin steel wire turn-up of the tire specification below R33. The capsule is a vuln...

AI Technical Summary

Problems solved by technology

[0010] In the "Finger-shaped Front and Back Wrapping Device for Tire Building Machines", when front and back wrapping is performed, the front end of the front and back wrapping rod expands and contracts through the front and back wrapping spring to form a continuous front and back wrapping ring with variable diameter. Push the steel cord for front and back wrapping, and under the action of front and back wrapping force, the front and back wrap springs are easy to bend and deform, thus affecting the tire building quality

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