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1. Decription of differential shaft ring
The differential shaft ring consists of a plurality of slip rings, which can overcome the problem of unwinding and material damage. The slippage rings are controlled to slip at a certain slip torque (torque), and the amount of slip exactly compensate for the difference in speed, thus it can control the tension of each roll precisely, which ensure the winding quality.
2. The working principle of friction rings / differential shaft:
1). The central air pressure differential shaft is a type of shaft with tension adjustment. The differential ring on it can slip independent ly .Controlled by the tension system, let the compressed air which has a certain pressure come to axle core, so that it will produce friction torque between the friction parts and the slip ring, and realize constant tension coiling.
2). The central air pressure differential shaft can meet the requirements of high-speed, error in material thickness, multi-stage tension control, high precision requirement on tension control, ,uniformity on the winding end . It’s ideal for double shaft and Center Coiling slitter.
3). The central air pressure differential shaft can be divided into two types: pneumatic locking type and mechanical locking type.
4). Central air pressure differential shaft are made of core roll, differential ring, airbags, friction parts, sealing rings.
3.Types and Specifications of our differential shaft ring
1) Key type (central air pressure and mechanical side pressure type)
A. 3 inch
3 inch key type friction element | |
Outside diameter | Φ75.5mm |
The maximum action diameter | Φ78mm |
Standard width | 15,20,25,30,35,40,50mm |
Standard internal diamete | Φ45,Φ50,Φ55mm |
Non standard can be made according to customer requirements | |
3JT-01 | 3JT-02 |
| |
B. 6 inch
6 inch key type friction element | |
Outside diameter | Φ151mm |
The maximum action diameter | Φ156mm |
Standard width | 20,25,30,35,40,50mm |
Standard internal diamete | Φ60,Φ75,Φ80mm |
C. 120mm
2) Steel ball type
A. 8 balls
Type | Outside diameter | The maximum action diameter | Standard width | Standard internal diamete |
2 inch | Φ49mm | Φ52.5mm | 15,20,25,30mm | Φ25,Φ30,Φ35mm |
3 inch | Φ75.5 | Φ78mm | 15,20,25,30,35,40,50mm | Φ50,Φ55 |
B. 12 balls
Type | Outside diameter | The maximum action diameter | Standard width | Standard internal diamete |
3 inch | Φ75.5mm | Φ78mm | 15,20,25,30,35,40,50mm | Φ50,Φ55,Φ60mm |
6 inch | Φ75.5 | Φ78mm | 15,20,25,30,35,40,50mm | Φ50,Φ55,Φ60 |
C. 24 balls
10 inch Steel ball type friction element Double row ball (24 beads) | |
Outside diameter | Φ253mm |
The maximum action diameter | Φ258mm |
Standard width | 40,50,60,75mm |
Standard internal diamete | Φ100,Φ120,Φ140mm |
3) New design type(Double balls double keys)
3 inch double balls double keys | |
Outside diameter | Φ75.5mm |
The maximum action diameter | Φ78mm |
Standard width | 15,20,25,30,35,40,50mm |
Standard internal diamete | Φ60mm |
The advantages of using differential shaft ring
1. The use of differential shaft ring improves the speed of the slitter .
2. The accuracy of the winding and the degree of automation.At the same time,it shortens the preparation time and achieve the humanized operation. In particular for polyester thin materials which have poor tensile resistance and big difference in thickness.The use of differential shaft ring can reduce the difficulty of winding.
