Nitrogen gas spring is a component with elastic function. It seals high-pressure nitrogen in a certain container. The external force compresses the nitrogen through the plunger rod. When the external force is removed, the high-pressure nitrogen expands to obtain a certain elastic pressure. This component is called a nitrogen cylinder or gas spring, or nitrogen spring for short. Nitrogen Cylinder; Gas Spring)
At present, conventional elastic elements include springs, rubbers, and air cushions. These elastic elements have been widely used in the industrial field to solve the needs of various elastic energy storage. In the mold industry, it is widely used. In recent years, the mold technology and mold manufacturing level have been greatly developed and improved, and the demand for molds for industrial products is also increasing. The molds are developing rapidly in the direction of precision, complexity, efficiency and long life. However, the original conventional elastic elements have certain shortcomings, which cannot meet the needs of this situation and cannot ideally solve the requirements in the stamping process. This situation often affects the quality of the stamping parts, makes the mold structure design more complicated, and affects the mold replacement time on the press; at the same time, the conventional elastic elements occupy too much mold space, which is large, and increases the cost of mold manufacturing. . For example, springs and rubbers both need to be preloaded to achieve the elastic pressure required by the design, and their elastic pressure increases significantly with the increase of the stroke. This non-constant performance in the elastic pressure may cause the parts to fail. Forming is not ideal for drawing force. For complex drawn parts, this contradiction is particularly prominent, and sometimes we have to increase the process to solve this type of problem. Another example is that the initial forces of springs and rubbers are not large, which is not ideal for processes such as bending and flanging that require relatively large initial forces. The resulting result is that the quality of the stamped parts is unstable, and it takes time and effort to adjust the mold. For the blanking process of dense punches, such as spring and rubber discharge, the discharge space of the mold is often not enough to place the spring or rubber, so it is necessary to increase the mold space to solve such problems. There are many examples of this kind. Current stamping designers can only use air cushions to make up for these shortcomings. However, when using a press air cushion, the design and adjustment of the mold make it inconvenient for the user; due to the fluctuation of air pressure and the loss of pipe throttling, the force provided by the air cushion is not very accurate; it occupies a relatively large space; it needs to be equipped with special Of compressed air stations, and not all presses are equipped with air cushions. When using the air cushion, the mold design is restricted by the position of the air cushion ejector, and the mold installation and debugging are not convenient. For this reason, people have worked hard to develop a new type of elastic functional component to replace the conventional elastic element. This new type of elastic element has more perfect performance, can replace the conventional elastic element, and complete the work that the conventional elastic element is difficult to complete. The nitrogen spring is a new type Elastic tool parts came into being. It can make up for the above shortcomings, simplify mold design, manufacturing, and facilitate mold adjustment; it can be used as an independent part to be installed in the mold, or it can be designed as a tube spring, which can be used as a part of the mold to work in the system. It is convenient to realize constant elastic pressure and delayed action, and it is an elastic component with flexibility. Nitrogen gas springs can be widely used not only in the mold industry, but also in other industrial fields, such as automobiles, electronics, instrumentation and other industries. From this point of view, the use of nitrogen gas springs is quite extensive, and its appearance meets the requirements of the times and meets the needs of industrial development. Obviously, the development of this technology is now in the ascendant.