Tell me something you don't know about buying an injection molding machine
With the rapid development of plastic industry, injection molding machine occupies an important position in both quantity and variety. The injection molding machine has the function of forming complex shape, precise size or dense plastic products with metal insert, which is widely used in national defense, electromechanical, automobile, transportation, building materials, packaging, agriculture, culture, education, health and People's Daily life. The market is full of various types of injection molding machines, and how to choose a satisfactory injection molding machine, and the purchase of injection molding machine to pay attention to what matters, has been a troubled problem for users. Let's take a look at what you need to pay attention to when buying an injection molding machine.
1. Purchase points: injection molding machine technical parameters. Users can choose injection molding machine through longitudinal or horizontal comparison to distinguish. The so-called "longitudinal" is the main technical parameters of the injection molding machine should meet industry standards, according to industry standards. The so-called "horizontal" is based on the domestic and foreign similar injection molding machine technical parameters for comparison. So it's a very careful scientific exercise. According to the injection molding products material, shape, structure and even the application of the field and specific occasions, according to the mold structure, quality, precision, cavity number, flow type and its structure, shape, size, according to the product of the day, month, year of production capacity automation degree to choose all levels of injection molding machine parameters.
Second point of purchase: the stability, reliability, safety and service life of the machine. The stability of the machine is mainly reflected in whether the mold closing mechanism and injection molding system run smoothly in each cycle. The machine works under silent without impact and the noise shall not exceed the industry standard. These conditions are related to the manufacturing and assembly accuracy of mechanical aspects, as well as the rational design and structure of elbow linkage. Reliability and service life are mainly reflected in the system rigidity of die closing mechanism, which is related to the structure, size, material and heat treatment process of template, tie rod, connecting rod and its pin shaft. Plastic injection molding machine through the system such as barrel, screw, screw head, check ring and screw drive spindle structure and manufacturing technology, these parts are the main stress and wear parts of the injection molding machine, directly affect the service life.
Purchase points three: injection molding machine security. The reliability of low-voltage protection system is related to man-machine safety when the mould closing mechanism is open and closed. Injection molding machine must implement electrical, mechanical, hydraulic joint safety protection system, this protection mainly reflects two aspects: one is the safety protection of the mold, the other is the safety protection of the person. Before closing the die, when the safety door is not closed properly, the die should be unable to operate; During die closing, if the safety door is not closed in the correct position, the template action stops or the die is automatically opened. If a foreign body, such as an embedded part, falls into the mold cavity by mistake due to vibration or other reasons, or other foreign body, such as starting, is mistakenly placed into the mold when the mold is closed, the mold should stop the closing action, or automatically open the mold and give an alarm.
Another safety link of the injection molding machine is to prevent the cold start of the pre-plastic screw. When the screw material does not reach the specified temperature and insulation time, it is forbidden to start, otherwise an alarm will occur. Protective devices for spray from injection molding nozzle are necessary to prevent burns.
The point 4 of choose and buy: automation degree wants high, function wants complete perfect, production efficiency is high. Modern injection molding machine can achieve manual, semi-automatic, automatic operation, as long as the mold design is reasonable, it can achieve the automatic operation from injection mold to the product top out and fall, also can be equipped with a manipulator to achieve unmanned operation. Core pumping function, hydraulic nozzle control function and fast heating runner probe function can be incorporated into the automatic procedures of injection molding cycle for automatic cycle. High production efficiency is mainly reflected in that the molding cycle of each mold is shorter under normal injection molding conditions. This is a reflection of an injection molding machine mechanical, electrical, hydraulic system comprehensive performance indicators, therefore, must use high quality hydraulic, electronic components, the use of precision manufacturing technology to improve the sensitivity of the injection molding machine system and repeated precision, this is the injection molding system efficient work is reliable guarantee.
Point 5: energy conservation and environmental protection is an important indicator to judge the quality of injection molding machine. Energy saving mainly reflects the water saving and power saving capacity of injection molding machine compared with similar machines under the normal process conditions of heating system (electromagnetic heating), power drive system (frequency converter, server, etc.) and heat dissipation system. The design of injection molding machine should fully consider the theme of "environmental protection". The injection molding machine shall prevent hydraulic oil leakage or excessive noise to create a quiet, noiseless working environment. In addition, the injection molding machine itself should be more environmentally friendly materials.
Purchase points six: machine maintenance, maintenance to facilitate. All kinds of machines, such as machinery, hydraulic pressure, electronics, electrical components installation location should be conducive to the maintenance and maintenance of the machine, at the same time, the injection molding machine universal, standardized degree is also very important to users.
In addition, the production cost, production efficiency, supplier and operation of the injection molding machine are all considered when buying the injection molding machine.