Professional air shaft for Laminating machine

Professional air shaft for Laminating machine

Air shaft is widely used in printing, packaging, plastic, paper making, spinning industries for all the machines with the winding, rewinding unit and slitting unit for the operation of material in roll.

Classification:

According to the structure

The shaft can be divided into key type air shaft and lath type air shaft. Most are using the key type air shaft and lath type air shaft is usually used on rewinding part of slitting machine or thin paper core. Because thin paper core is easy to be out of shape. The key type air shaft is possible to make the paper core broken. The tile type air shaft is three pieces of tiles after inflation. The roundness is good. But compared with key type air shaft, the strength and load is smaller and the price is higher. So most customer will choose key type air shaft. We need to choose suitable not expensive product.

According to the diameter

We have the following normal type but other dimensions can be customized.

 

Advantage of our product:

 

Now I will introduce the advantages of our air shafts:

 

1.Air shaft body Material

We adopt hi-precision cold-drawn steel tube as the shaft body . The thickness of this kind of tube is uniform so after inflation , all key strips will stick out at the same height  which will realize minimum eccentricity of the paper core. And it will greatly weaken centrifugal force of the whole air shaft when it is rotating and will keep a dynamic balance.This kind of material is 460 dollars more expensive per ton than normal materials.

 

2. Key bar structure for our key type air shaft

Our exported key type is the following structure, it used the whole long key bar forming a good protective ring around the air chamber ,and we adopt the pagoda springs. It can bear 300000 compression without broken and the quality guarantee period is one year.

The key bar is made of aluminum alloy. It is light in weight and is suitable for ordinary tubes such as paper tubes.

 As shown in the following figure:

Our air shaft is distributed by 6 pieces key bar around the circumference, surrounding the air chamber to protect it.

our key bar

 

3. From the analysis of future maintenance costs
Those two structures of the expansion shaft, if need to repair ,you must replace all the keys,springs and air bags, but our structure is different. Even if need to repair after a few years later, because the spring can be directly take away, for dozens of springs, the cost of a few dollars.Plus a new airbag, the general maintenance and cost, one meter about at 24 dollars, plus a labor costs, even if a two-meter shaft, all the maintenance costs are around 63 dollars. And after the repair,  also to continue the year warranty!

Expansion shaft airbag and shaft head connection is also a very important process, our company is using special equipment, the outside directly with the iron ring buckle, good sealing, and stable. Many other factory products are iron wire tie at both ends, which will lead to easy to leak. Sealing performance is not stable.

Below is a comparison of the structural images of our airbag seal with other supplier: