What Is An Lug Type Air Shaft

The key air expaned shaft is a special winding and unwinding shaft, that is, the shaft that can protrude on the surface after high-pressure inflation, and the shaft that quickly retracts the surface part after deflation is called an inflatable shaft. The key inflatable shaft is also called the convex key inflatable shaft, the key bar inflatable shaft, the convex claw inflatable shaft, the claw key inflatable shaft and other names, but the working principle is the same.

Structure and material of key inflatable shaft:
The shaft body of the inflatable shaft is made of high-quality steel tubes, with hard chrome plating on the surface, aluminum convex keys, free expansion and contraction, and is equipped with high-quality rubber liners and fast filling and exhaust nozzles. The expansion part is a key bar, usually the unilateral expansion height can reach 5mm to 6mm, such as the diameter before expansion is 74mm to 75mm, and the diameter after expansion can reach 79mm to 82mm. In practical application, different materials adapt to different coils and working steps, 1) steel inflatable shaft - can withstand large weight of paper rewinding and unwinding without damage, 2) aluminum - light and convenient loading and unloading to reduce the amount of labor.

Inflatable and deflating process of key inflatable shaft:
The inflatable shaft is convenient and quick to use, only need to bring its 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, only the inflatable handle is inflated against the air nozzle on the air expansion shaft can be completed, 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 nozzle by hand to deflate, the key bar will return to the original appearance, and the external parts (such as the round paper tube) can be taken out.

Frequent problems and maintenance methods of key inflatable shafts:
1) Rubber hose leakage: This phenomenon is that the quality of the hose itself is not enough. After installation, it will leak when inflated.
2) There is a notch in the sealing ring: install the sealing ring and spray a circle of sealant.
3) Air nozzle leakage: The inflatable nozzle is not installed correctly, so just replace another inflatable nozzle and install it.
4) Hose is broken: If so, then it is troublesome and it is necessary to remove the shaft head and replace it with a new hose.

Precautions for the installation and use of lug type inflatable shafts:
1) Ensure that the compressor that controls the air pressure is in a stable state, and install the filter directly on the compressor and the inflatable shaft to avoid impurities blocking the air pipe and causing air leakage;
2) The direction of air entry should be perpendicular to prevent damage to the valve;
3) When exhausting, the standard exhaust port must be used, and it is forbidden to use sharp hammers and other tools to avoid air leakage;
4) Install pressure gauge and pressure control device, and the air pressure is controlled at 3-8kg/cm;
5) Handle with care to avoid hurting the air valve;
6) When replacing the nozzle, use a socket wrench.

Uses of key inflatable shafts:
The key inflatable shaft has a wide range of uses, and all machines with winding, unwinding, and slitting can be applied to the inflatable shaft, even including the light metal industry. For example, the inflatable shaft is mainly suitable for printing equipment: drying machine, flexo printing machine, gravure machine, trademark printing machine, etc.; Other machinery includes: coating machine, leather machine, setting machine, embossing machine, slitting machine, die-cutting machine, rewinding machine, paper tube machine, bag making machine, laminating machine, laminating machine, film blowing machine, foaming machine, laminating machine, embossing machine, paper machine, non-woven machine, cloth inspection machine, hot stamping machine, battery equipment and other related machinery supporting the use.

Custom key type Inflatable Shaft:
The convex key inflatable shaft (key pneumatic shaft) is not in stock, and is customized according to the size or drawings provided by the customer, and the user needs to provide the overall dimensions, the position of the air valve and the important dimensional tolerance of the shaft head when customizing this product.

Contact factory in Guangdong, China

(Over 20 years experience in air shaft production )