珍珠岩吸音板成型机液压系统设计与仿真研究.pdf

机床与液压
Sep.2014
Hydromechatronics Engineering
42No.18
DOL:10.3969/j.jssn.1001-3881.2014.18.014
Design and simulation of hydraulic system of perlite sound
absorption plate forming machine
Yan-jun XIAO Jia-yu ZHU, Li-hu HE
Hebei University of Technology, Tianjin 300130, China
Abstract A hydraulic system of bi-directional hydraulic press is designed according to the press-
ing process of perlite sound absorption plate, and the simulation model of the hydraulic system is
built based on AMESIM software to analyze dynamic characteristics of the working cylinders. The
results of the flow-time graphs and pressure-time graphs show that the design of this system
which is feasible, can meet the production needs and provide theoretical basis for the practical
design and parameter optimization of the hydraulic system
Key words: Hydraulic forming machine, AMESIM, Simulation
upper and the lower cylinder at the same time
I, ntroduction
2. The pressing process of perlite sound ab-
With the aggregate of expanded perlite, con-
sorption plate
figured with inorganic adhesive as well as curing a
gents, perlite sound absorption plate is a kind of new
According to the production needs of perlite
building material by extrusion molding and drying sound absorption plate, this forming machine has two
processes. Combining the functions of sound absorp-types of manual and automatic operation. The manual
tion, fire prevention, thermal insulation heat insula-operation is mainly for the installation and adjustment
tion, ete, it effectively solves the technical problems of the mould, setting initial state under automatic
of various kinds of external walls and roofing materi
mode an
d debugging the system, etc [3]. The pro
als, and has a broad market prospect [1]
duction process under automatic mode contains nine
Generally the frame of hydraulic forming ma-steps as follows
chine is three-beam-four-column type that the upper
1)The famale mold rises to form a cuboid
and lower beams form a rigid closed frame and the
cylinder piston rod connects with the movable beam
2) Fill the famale mold to the same height (u-
rigidly with a guide pillar [2 J Based on the existing sing artificial, semi-automatic or automatic ways ac
hydraulic machine technology structure, this paper cording to the production automation)
designs a perlite sound absorption plate hydraulic
3) Clean the extra powder
forming machine which uses the composited frame
4 ) In order to prevent the escape of the powder
with acing cylinder. In order to better meet the needs when pressing, the famale mold rises a bit to be
of production, the hydraulic system of this forming higher than the powder surface
designed to be double-loop and double
5) The upper mold falls slowly to contact with
pump which can actualize the extrusion of both the the powder
6) The upper mold and the lower mold
Received. 2014-04-21
slowly at the same time until the powder reaches the
Yan-jun XTAO, Associate professor. E-mail: xxyyzz1976 thickness of the finished product
126. com
7) The famale mold falls and finishes the ejec