Types Of Core Adaptor

The birth of the inflatable drum:
External rubber pneumatic core chuck is also known as rubber air expansion shaft sleeve, also known as inflating drum, rubber air expansion shaft sleeve clamp has key bar type and drum skin type, drum skin inflatable sleeve is also called inflating drum. The birth of the inflatable sleeve is because of the inconvenient use of the large diameter inflatable shaft and the high manufacturing cost was born, let's imagine, if a six-inch inflatable shaft is about 1.5-2 meters long, how heavy is the weight? At least 100KG, so at this time, the weight problem has also become the pain point of our inflatable shaft use enterprises, and this gives us the inflatable shaft manufacturer to come up with a solution, if the weight of the product is not particularly heavy, then choose to put a fixed paper tube at both ends of the inflatable shaft, which also plays the effect of receiving and discharging, and the weight of the shaft itself is only about 10KG heavier than the three-inch inflatable shaft, so it is much more convenient to use.

Classification and working principle of inflatable sleeve:
The inflatable sleeve can be divided into two types: rubber inflatable sleeve and aluminum alloy inflatable sleeve, the surface of the rubber inflatable sleeve is made of rubber, which is in contact with the paper tube, which is relatively soft and has high accuracy, and the working principle is that the airbag expands to push the key strip to tighten the inner wall of the core; The main body of the aluminum alloy expansion sleeve is made of aluminum alloy, the surface has been oxidized, and the structure usually has aluminum convex keys and rubber liners, and the unilateral expansion height can reach 5-6mm after inflation, and the working principle is that the radial expansion of the convex key locks the core. The aluminum alloy expansion sleeve is characterized by light weight, corrosion resistance, and flexible expansion and contraction of the convex key, which is suitable for high-speed operation scenarios.

There is also a spring mechanical expansion sleeve called nylon inflatable sleeve:
The nylon expansion sleeve does not need to be inflated, it is made of nylon material, and there is a spring structure inside, which is directly set on the inflatable shaft when used, and automatically engages the paper tube by spring force. The common nylon expansion sleeve specifications are 3 inches to 6 inches, 3 inches to 8 inches, 3 inches to 12 inches of nylon expansion sleeve, the length can be customized according to the needs of customers, the general commonly used length nylon expansion sleeve has 150mm, 200mm, 250mm, 300mm and other conventional lengths, special lengths can also be customized, depending on the user's requirements. The advantages of nylon inflatable sleeve are non-inflationary, maintenance-free, long service life, generally up to 10-20 years, strong bearing capacity, especially suitable for wide and large roll diameter occasions. Nylon inflatable sleeves are relatively less accurate, but they are also cheaper.

Compare rubber inflatable sleeves, aluminum alloy inflatable sleeves and nylon inflatable sleeves:
In terms of main material and structure: the rubber inflatable sleeve is composed of aluminum alloy frame (surface oxidation) and rubber airbag; The aluminum alloy inflatable sleeve is composed of an all-aluminum alloy body, a rubber liner and an aluminum convex key; Nylon inflatable sleeve is composed of a composite structure of nylon and spring.
From the perspective of load capacity: because of the structure of springs and high hard nylon, the load capacity of nylon inflatable sleeves is stronger than that of rubber inflatable sleeves and aluminum alloy inflatable sleeves.
In terms of service life: the rubber inflatable sleeve is much longer than the aluminum alloy inflatable sleeve and nylon inflatable sleeve in terms of service life.
In terms of cost and cost, the cost of aluminum alloy inflatable sleeve is lower than that of rubber inflatable sleeve, the cost of nylon inflatable sleeve is the lowest, and the nylon inflatable sleeve is basically maintenance-free.
Therefore, when choosing an inflatable suit, our inflatable suit users can choose their favorite inflatable sleeve according to their actual needs or preferences.

The rubber inflatable sleeve clamp is mainly used for the winding and unwinding device of coating machine, printing machine, rewinding machine, paper machine, plastic machine, slitting machine, laminating machine, laminating machine and other related machinery.

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(Over 20 years experience in air shafts adaptors production )