With development of product and
forming process, forming equipment is also in constant innovation and
development, focus on the development of modern injection molding machine is to
control, in order to improve the level and degree of automation of the machine,
and machine optimization design and processing technology improvement and meet
the requirements of injection molding machine quality and saving energy. The
development trend of modern injection molding machine is summed up as follows.
(1) functional specialization and low
price in the production practice, the product shape and plastic varieties,
often have some special requirements for injection machine. For example, from
the product side, there are some inserts, some without insert, there is some
monochrome, two-color; from plastic varieties, some thermoplastics, some
thermosetting plastics. Therefore, special and special injection machine
suitable for the development of user requirements, with a higher ratio of
performance to price, technology intensive and simplified structure
characteristics. For example, gas assisted injection equipment, fusible core
injection device, magnet and metal powder injection machine etc..
(2) high speed and high efficiency and
precision of the die opening and closing speed, mold opening and closing speed
from 20 30mm/min increased to 40 50mm/min, some even as high as 60mm/min. The
injection speed is increased from 100mm/s to 450mm/s, for small and medium
sized injection speed injection machine of 600mm/s is not rare, some up to
900mm/s.
In the small injection machine, at the
same time, the development of large and super large or giant and micro
injection machine. 40MN, 50MN, locking lidamycin and even large injection
machine has come out more. The injection machine made by Germany locking knife
up 50MN, 24.5kg injection volume, injection pressure of 140 - 370MPa. Large
injection machines in Japan were produced by machine manufacturing, clamping
force 120MN. At present, ordinary, precision and ultra precision injection
molding machine precision has reached 0.02 0.05mm, 0.01 0.02mm and less than
0.001mm.
(3) automation production is to ensure
product quality, improve productivity, reduce labor intensity, improve working
conditions, make full use of the equipment utilization rate, reduce the cost of
an important way. At present, with many new control devices, such as
programmable controller (PLC) to replace the traditional relay. Programmer
control. Reliable work, can easily modify the program. Microcomputers have been
used for injection machine process control and process parameter control, this
new control method for precision molding products is particularly important, it
can automatically adjust the molding conditions to ensure the size and quality
of the products. For the production of general machine products, the production
process from feeding to remove the product inspection and packaging are done
automatically. To ensure the safety of the machine by a security device, not
only can be automated, and centralized management, realize unmanned operation.
(4) other mechanical structure design
using advanced methods and ideas and means, clamping way to toggle rod and
direct pressure, improved clamping mechanism to form a series of standardized;
host appearance and shape optimization design, noise reduction, the modularity
of the injection machine and ancillary equipment standardization, serialization
and injection machine, development of environment-friendly type injection
machine and other has caused the attention of the injection molding machine
manufacturers.
没有评论:
发表评论