Why Is It Highly Recommended To Use A Multi Bladder Type Air Shaft?

- Dec 04, 2024-

The through-key air shaft is a kind of equipment used in printing, coating, rewinding and other industrial fields, which expands the shaft core to clamp the coil by gas filling.

Structural features of custom through-key inflatable shaft:
1) The inflatable shaft with long key strips can be applied to rewinding and unwinding, and the multi-airbag design, the length of the airbag is similar to that of the main body of the inflatable shaft. When the air pressure inflates the airbag, the outer diameter of the inflatable shaft length key bar expands, and the inner diameter of the paper tube is jammed.
2) The main body material can be steel or aluminum, and the key bar material can be rubber, aluminum or polyurethane. According to the special requirements of the user, other materials are optional.
3) The steel shaft head is produced according to the customer's drawings to meet any special requirements.
4) The airbag and the long key strip can be easily replaced, the surface repair and replacement is easy, just simply loosen the pressure strip at both ends, take out the key strip, you can easily replace the airbag, high efficiency, without having to disassemble the shaft head.
5) The airbags and key bars are evenly arranged on the periphery, and the whole axis has a good balance, which is suitable for machines with high linear speed.
6) Multiple groups of airbags are evenly arranged on the shaft body, and the intake valve is shared to ensure the concentric beat.
7) The length of multiple groups of airbag glue key strips is uninterrupted from the shaft head to the end of the shaft, and it is convenient to insert the multi-roll material to any position of the shaft; All expanders are in the shaft body.

The through-button air shaft has the following advantages:
1) Simple structure: The through-key air expansion shaft is composed of an inner shell, an end cap, an airtight gasket, an expansion rubber tube, etc. The structure is simple, the parts are few, and it is easy to install and maintain.
2) Good air tightness: The air tightness gasket made of special materials is used inside the inflatable shaft to ensure that the shaft core can achieve complete expansion after gas filling, and keep the pressure stable to ensure the firm clamping of the coil.
3) Strong load capacity: The through-key inflatable shaft is made of high-strength alloy steel, which has good load capacity and tensile strength, and can adapt to the processing requirements of different coils.
4) Automatic centering function: The through-key inflatable shaft has a built-in automatic centering mechanism, which can achieve fast and accurate centering when loading and unloading the coil, and improve the production efficiency and coil quality.
5) Lightweight design: The lightweight design is adopted, so that the inflatable shaft can reduce the moment of inertia and improve the machining accuracy and production efficiency during use.
6) Strong adaptability: The through-key air shaft is suitable for a variety of coils, which can be quickly replaced and adjusted as needed, and has strong adaptability and flexibility.
7) Precision machining: The inside of the inflatable shaft is precision machined and ground to ensure the surface smoothness and roundness of the shaft core, and improve the machining accuracy and surface quality of the coil.
8) High efficiency and energy saving: the through-key inflatable shaft adopts pneumatic transmission mode, which can adjust the inflation pressure according to the needs to achieve the purpose of energy saving and consumption reduction, and improve the production efficiency at the same time.
9) Easy to operate: The operation of the through-button air shaft is simple, and the expansion and contraction can be achieved by adjusting the air pressure through the control valve, which is easy for the operator to use.

The working principle of the through-key inflatable shaft: the outer diameter of the shaft is changed by the principle of air compression, and then it is closely combined with the coiled tube, which facilitates the sending and winding of the whole coil of materials, and promotes the reasonable, simple, accurate and automatic operation on the production line; When the air is injected into the internal expansion, the parts in the shaft body are expanded and extruded, which turns into the outer diameter of the shaft body to increase, so that the coil tube is fully wide and accurately fixed on the shaft body. When the internal air is released, the expansion extruded parts are retracted, and the shaft can be easily removed.

The range of applications of the through-key inflatable shaft:
The use of inflatable shaft is very wide, and all machines with winding, unwinding and slitting can be applied to inflatable shafts, even including light metal industries. For example, the inflatable shaft is mainly suitable for printing equipment
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.

Installation steps for the through-key inflatable shaft:
1) Select special glass glue on the airbag joint at the inflatable end for modification, and put the airbag on the airbag joint.
2) Then tie the airbag to the joint with a wire with a diameter of 1-1.5mm (make sure that the bundle is firm to avoid air leakage). The airbag clamping sleeve is inserted at the tail end of the airbag, and special glass glue is applied on the tensioning head. Pump the tension head into the airbag. The airbag rests for a period of time and waits for the glass glue to cure.
3) Install the inflator nozzle to the inflatable end. Fill the airbag with compressed air by aligning it with the inflator nozzle. Note that the airbag is not bound by external pressure at the moment, and do not over-inflate; In case of damage to the airbag. Put the inflatable end and the airbag into the water phase to observe whether the inflator and the airbag are leaking. After confirming that the inflator and airbag are properly sealed, the inflatable shaft can be installed.
4) Apply anaerobic glue to the touch surface of the fixed end and the aluminum alloy roller, and then align the end with the positioning hole of the aluminum alloy roller. The fixed end and the inflatable end have steel grades at the joint of the aluminum alloy roller, be careful not to install the two ends incorrectly, and then press the fixed end into the aluminum alloy roller.
5) Install the positioning sleeve, tighten the positioning screws, and tighten the hexagon screws in the countersunk. After the anaerobic glue is coated on the contact surface of the inflatable end and the aluminum alloy guide roller, it is loaded into the aluminum alloy roller together with the air bag, the positioning sleeve and the positioning screw are installed, and the hexagon screw of the countersunk head is tightened.