Three major breakthroughs promote the development

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Three major breakthroughs have promoted the development of injection molding machine technology

injection molding technology has made a huge leap in the past 25 years, from the original basic injection molding to making full use of plastic machines to make as much processing as possible. It includes taking out parts and components and assembling them with automatic technology, double injection molding, and even assembling parts and components in the mold

now, in many injection molding factories, it is no longer seen that the inspection department often removes parts from the production line for testing. Instead, an operator is responsible for all this and installs in mold sensors to assist in testing, so that we can know whether the parts are qualified before the mold is opened

the injection molding machine has become the control center of the production workshop, and auxiliary equipment, material processing equipment and other equipment are connected to the machine controller. This is a revolution that has been evolving since 1989

in the past 25 years, three landmark changes have taken place in the field of injection molding: all electric technology, double plate plastic machine and pull rod free plastic machine. It has been 25 years since the birth of the pull rod free injection molding machine. This year is also the 25th anniversary of the founding of plastics

these three technologies are not as revolutionary as the reciprocating screw invented by William H. Willert in 1952, but the long-term impact of all electric injection molding machine is better known. Reciprocating screw is an epic change with wide influence. It removes the plunger and can create a marbling effect in cosmetics packaging and other applications. Decades later, the plunger found new uses in some large tonnage plastic machines. The injection cylinder can be filled with screws, and then the plunger will push it into the mold, which is later

let's take a look at the development of these three technologies:

all electric plastic machine

all electric injection molding machine saves energy, because its servo motor only uses electricity to drive the machine on demand. When the machine is not working, electricity will not be used. Precision and reliable repeatability can also be achieved through electric drive

hydraulic presses rely on constantly running pumps to provide the oil pressure required to drive the machine, but manufacturers have developed the so-called "intelligent hydraulic press", which uses servo valves, variable speed motors and positive displacement pumps

all electric technology was born in Japan, and Japan's environmental regulations strictly restrict the disposal of hydraulic waste liquid. The whole industry began to try to improve energy efficiency to combat high energy costs. The utilization rate of all electric plastic machines in the Japanese market has exceeded 75%

industry observers say that about half of all electric injection molding machines in the U.S. plastic machine market. Now, most small tonnage plastic machines are all electric. There are also some large tonnage all electric plasticizers, but most machinery manufacturers supply mixers, which use hydraulic pressure to control some functions, while others are controlled by electricity

at the time of milak's development, dragon company took the lead in promoting the all electric plastic machine in North America. In 1990, it launched the all electric plastic machine, which was manufactured by FANUC in Japan. Before that, most American injection molding enterprises knew little about servo driven plastic machines. Milacron launched its all electric plastic machine produced in the United States at the 1994 NPE exhibition

the 2001 German K exhibition marked a big step forward in all electric technology, and molding enterprises all over the world have launched all electric plastic machines. Yes, Milacron and Japanese machinery manufacturers have provided all electric plastic machines before. However, at the K exhibition in 2001, more European enterprises launched their own all electric plastic machines. K exhibition in 2001 showed that all electric injection molding machines are not just a flash in the pan

k 2001 started the dispute between hydraulic and all electric plastic machines that lasted for many years. Such arguments may not be heard now, because these two technologies are more closely combined

the cost of all electric machines is higher than that of hydraulic machines, but the premium is reduced to a certain extent due to the economies of scale brought about by the high output of motors, ball screws and other parts. Even so, many molding enterprises in Germany and other European countries still love continuously improved hydraulic presses

in another 25 years, the all electric plastic machine is expected to be valued in Europe. Europeans attach great importance to energy efficiency. The driving factors include the relatively high energy cost in Germany, so Germany is actively developing renewable energy. In addition, the machinery industry association EUROMAP has put forward higher energy standards and labeling systems

double plate technology

in the mid-1990s, injection molding machine buyers found that the market was full of double plate molding machines

most traditional injection molding machines use three heavy steel plates to support the mold component AC foaming agent 0.3~0.5, of which two steel plates each support half of the mold, which is called the moving and fixed plate, and the third steel plate is mainly responsible for: transmitting the clamping force to the pull rod and the moving plate

the manufacturer launched several double plate plastic machines at the 1995 K exhibition held in Dusseldorf, Germany. Two years later, at the 1997 Chicago NPE exhibition, the machinery industry announced the launch of double plate molding machines to the North American market

the Ministry of environmental protection issued the technical policy for pollution prevention and control of titanium dioxide industry by using double boards instead of three boards, which greatly reduced the total length of the plastic machine. This is more important for large tonnage plastic machines with large clamping force. In addition, the production cost of the double plate plastic machine is also slightly lower

it is interesting that in the early stage of the development of plastic machinery, many injection molding machines only used double plates. Since then, manufacturers have added a third board to increase stability and make the plastic machine more stable

twenty years ago, to remove the third plate, mechanical engineers needed to install a clamping system, using locknuts, special pressing plates and cylinders, and flat arms. The key challenge is to solve the problem of plate deflection, that is, the large steel plate will bend after applying the clamping force

the double plate revolution also promoted the great progress of injection molding plate design. Injection molding plate is no longer just a big steel plate

pull rod free

Engel, headquartered in Austria, pioneered the pull rod free injection molding machine, which was first introduced at the 1989 K exhibition. The pull rod is a thick metal rod that connects the main use plates. They absorb the clamping force and keep the plates parallel

the production of railless plastic machine is a major breakthrough. The invention of Engel company has overcome a major obstacle to entering the surrounding area of the mold. In this way, it is more convenient to use automatic machinery to deal with parts. Larger molds can also be used in the plastic machine without being blocked by the pull rod. It is also more convenient to replace the mold

engineers of Engel company make use of physical knowledge and mechanical engineering principles. In the past 25 years, the company has sold thousands of rod less injection molding machines

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