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Cantilever expanded shaft is a special winding and unwinding shaft, that is, the shaft that can be protruded on the surface (finger key bar) after high-pressure inflation, and the shaft that the surface part (finger key bar) quickly retracts after deflation is called cantilever inflatable shaft. The structure of cantilever inflatable shaft is widely used in many machinery industries, especially in the film industry.
Definition and principle of cantilever inflatable shaft:
First, let's take a look at the definition and principle of a cantilever shaft. A cantilever inflatable shaft is a shaft that supports the material outside the shaft. The air cushion inside creates a supporting force, so that the material outside the axis remains stable and does not deform due to the movement of the center. The cantilever design makes its bearing capacity more excellent and can adapt to the use environment of high loads.
Advantages of cantilever inflatable shaft:
The cantilever inflatable shaft is better than the general inflatable shaft, but it is good that the whole shaft does not need to be removed for the next discharge. After directly deflating, the material can be taken away, because its width is not large, so it is more convenient to operate naturally. This is also the inflatable shaft chosen for many machines with light weight and small width. The inflatable shaft and inflatable sleeve are extremely convenient and fast to use, only need to provide their own air source, the air pressure is controlled in the range of 6-8kg/cm2, when the external parts (such as the round paper tube) need to be locked, as long as the inflatable handle is inflated against the air nozzle on the inflatable shaft, the key bar will protrude against the external parts (such as the round paper tube), when the paper needs to be relaxed, press the sliding air core on the air valve by hand to deflate, the key bar will return to its original appearance, and the external parts (such as the round paper tube) can be taken out.
Advantages of cantilever inflatable shaft:
1) Efficient and economical
Cantilever inflatable shaft products use advanced metal materials and process technology, which makes it have the durability and reliability of GAO. And thanks to the principle of air cushion fluid mechanics, friction and heat loss can be reduced during operation, thus ensuring efficient and economical operation.
2) Easy to install and maintain
The design of the cantilever inflatable shaft is simple and straightforward, allowing it to be easily installed and removed. It is also very convenient in terms of maintenance, and only need to check the shaft body and bearings regularly to ensure the normal operation of the shaft.
3) Wide range of application
Cantilever inflatable shafts have a wide range of applications and can be used in many industries such as printing, packaging, adsorption, and coating. It can adapt to different materials and working environments to meet different needs.
4) Stable and reliable
The cantilever shaft remains stable during operation without deflection or shaking. At the same time, it also has a very good bearing capacity and can withstand the operation of materials stably.
5) Environmental protection and energy saving
The cantilever inflatable shaft adopts an air cushion design, which does not require the use of lubricating oil or other chemical media, and will not pollute or harm the environment during use. At the same time, the use of air cushion also enables it to reduce energy consumption, and is an environmentally friendly and energy-saving shaft product.
6) Customizable
The cantilever inflatable shaft is highly customizable and can be designed and manufactured according to the different needs and special requirements of users. This feature enables users to better cope with different working environments and material types, and improve work efficiency and accuracy.
Technical features of the cantilever inflatable shaft:
The integral metal frame digs out a box-shaped window at the fixed end of the cantilever mandrel operation side to ensure the structural rigidity of the printing platform, the bearing seat is installed on the inside of the movable steel block, the steel block is driven by a high-precision ball screw, the moving position of the screw rod is on the center line of the plate roller mandrel, and the linear guide rail is installed at the upper and lower ends of the box-type window respectively to fix the mobile steel block, so as to ensure the stability of the printing platform in high-speed operation. Here, because the screw moves on the center line of the plate roller mandrel, the thrust force of the center impression cylinder on the plate roller and the driving force along the direction of the ball screw act on the center of the plate roller mandrel, and there is no torque on the support frame.
Problems to be paid attention to when installing cantilever inflatable shafts:
1) When installing the inflatable shaft, the first thing to determine is that the compressor that controls the air pressure is in a stable state, and the filter is directly installed between the compressor and the inflatable shaft to prevent impurities from blocking the air pipe, thus causing air leakage;
2) The direction of air entry should be vertical to prevent damage to the valve;
3) When exhausting, the standard supporting exhaust port must be used, and it is forbidden to use sharp hammers and other tools to avoid the leakage of the inflatable shaft of the T machine transmission;
4) To install pressure gauge and pressure control device, and the air pressure must be controlled in the range of 3-8kg/cm;
5) When replacing the nozzle, you must use a socket wrench, if there is an internal failure, when you need to disassemble and repair, please ask the maintenance personnel, do not disassemble by yourself, so as not to cause unnecessary losses;
6) Be careful not to hurt the valve.
Application scenarios of cantilever inflatable shaft:
It can be applied to printing, packaging, adsorption, coating and other industries. Let's take the printing industry as an example to analyze its application scenarios.
In the printing industry, cantilever air shafts are widely used in equipment such as offset and flexo presses. Its excellent load-bearing capacity and stability enable it to carry printed materials stably without deformation or deviation during high-speed rotation. At the same time, its quick disassembly and installation also make the equipment in the printing industry more convenient and efficient.
In short, the cantilever inflatable shaft is an excellent shaft product with many advantages and characteristics. If you need to improve work efficiency and precision in the textile, printing, packaging, coating and other industries, then the cantilever inflatable shaft will be a good choice.


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