What is a tension clutch?
These tension brakes clutches are used in constant tension applications for various kinds of machinery. They are also suited for a variety of temperature conditions. These products are able to quickly dissipate heat through air or water cooling.
What is a tension brake?
Several different types of brakes have been specifically designed for unwind/rewind/tension applications to provide consistent tension, even during flying splices and emergency stops. …
How does tension control work?
In both closed loop and open loop, tension is managed by the torque applied to the center of the roll from a brake, clutch, or drive. Tension Controllers automatically regulate this torque, making any necessary correction or adjustments, throughout the process, allowing for continuous production.
What is the upper thread tension?
By thread tension, we mean the amount of thread that can pass through the machine to create the stitch. Top thread tension is controlled by a dial on the machine’s thread path. So make sure the thread sits correctly between the tension discs when you’re threading your machine.
What is closed loop tension control?
Closed Loop Tension Control Systems Closed Loop or “Feedback” Tension Control systems operate by continuously monitoring the Web Tension and continuously adjusting the torque applied to the material roll to achieve the desired tension in the material web.
When should you increase thread tension?
Needle thread tension is too loose The needle thread needs to be tightened if the stitching thread shows loops on the underside. On the other hand if the needle thread is too tight, it will pull up the bobbin thread and also show it on the topside.
How do you fix thread tension?
If the tension isn’t perfect, fix it by adjusting the bobbin spring; tighter if the bobbin thread shows on the upper layer, and looser if the needle thread shows on the underlayer. Make another test seam, and examine the stitches, repeating until the stitch is balanced.
What is difference in between close vs open loop tension control?
Conceptually, the difference between the two control systems is really just the element of feedback. So, the basic advantage of a closed-loop (feedback) vs open-loop (non-feedback) tension control system is its higher accuracy, and ability to react immediately to process disturbances and system noise.
How do tc bolts work?
A tension control bolt (TC bolt) is a heavy duty bolt used in steel frame construction. The end of the shank has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened. When the appropriate tension is reached the spline shears off.
What is a dancer roller?
A type of roller, also known as a floating roller, used in the infeed section of a web press to regulate the speed at which the web of substrate unwinds into the press and to maintain web tension. The dancer roller is free to move up or down, forward or backward, as the press runs.