Page 40 - 《橡塑技术与装备》英文版2025年12月

HINA R&P TECHNOLOGY AND EQUIPMENT

Working principle and common fault analysis of the

cutting system of the steel cord cutting machine's host

He Pingjun, Jiang Lilei, Wang Chen
(Aeolus Tire Co. LTD., Jiaozuo 454003, Henan, China)

Abstract: This article elaborates on the mechanical structure and working principle of the cutting system
of the steel cord cutting machine's host machine, as well as the role, mechanical structure, and working
principle of the hydraulic clutch brake in the host machine's transmission system. It analyzes common faults
and solutions encountered during equipment operation, providing a reference for equipment maintenance
personnel.
Key words: steel cord cutting machine; cutting blade; hydraulic system
Classification number: TQ334.44 Article number: 1009-797X (2025)12-0034-08
Document code: B DOI: 10.13520/j.cnki.rpte.2025.12.008

0 Preface reciprocating motion. The PLC controls the opening and
Currently, the steel cord cutting machine is one of the closing of the hydraulic clutch in the reduction gearbox through
main equipment for all-steel radial tire production enterprises. external switches and related logic algorithms, enabling the
It is divided into 15°~70° small-angle steel cord cutting blade holder to precisely rise, fall, and stop, thus achieving
machines and 90° steel cord cutting machines. Its main effective cutting of the cutting blade and realizing automated
function is to cut the steel cord into cord strips according to the cutting production of steel cord fabric. During the mechanical
set width, and then splice and roll the cord strips. The cutting transmission process, a flywheel is installed at the input shaft
system of the cutting blade of the steel cord cutting machine end of the reduction gearbox, and a plum-shaped elastic
host machine is an important part of the overall production coupling is installed between the motor and the flywheel. The
line, mainly consisting of the cutting blade mechanism, entire mechanical transmission process is as follows:
transmission mechanism, hydraulic system, etc. This article Motor → plum blossom elastic coupling → flywheel
briefly introduces the structure, working principle, common → reduction gearbox → crankshaft → C-shaped side arm →
fault analysis, and solutions of the cutting system of the cutting upper tool post
blade of the steel cord cutting machine host machine. The main function of the flywheel is to store a portion
of the energy transmitted to the crankshaft during the power
1 Cutting mechanism stroke of the motor. This energy is used to overcome resistance
The cutting mechanism is one of the core components of during the lifting process of the upper cutting blade, drive the
the entire equipment, playing a decisive role in its operation. crank rod mechanism past the upper and lower dead centers,
This cutting mechanism adopts a guillotine-style structure, ensure that the rotational angular velocity and output torque of
as shown in Figure 1. The motor rotates and mechanically the crankshaft are as uniform as possible, and enable the motor
transmits power to the crankshaft through the reduction
Biography: He Pingjun (1979-), holds a bachelor's degree and works
gearbox. The crankshaft rotates, driving the C-shaped side
as an engineer. He is primarily engaged in the daily management and
arm and causing the upper blade holder to perform linear equipment improvement of tire manufacturing equipment.

·34· Vol.51，No.12