Folder Roll Speed Setting
Having the correct folder speed when setting up a folder machine is essential, so that processes such as folding, stitching, and perforating can occur as they should. Correctly setting the speed of the folder rolls is important to achieving accurate performance from a folder machine, and to help ensure the quality of the product produced.
To begin with, the folder roll speed should be verified and adjusted according to the job specifications. Generally speaking, the folder roll should be running at least 50% faster than the machine. A folder roll that is running too slowly can cause jams or other problems in the machine. The size, length, and grade of the product being produced also need to be taken into consideration when determining the optimal folder roll speed.
Once the appropriate speed is determined, the folder roll motor should be set to the desired speed. This is usually done using a knob on the side of the folder machine, similar to the one pictured in Figure 1. The knob may be labeled in RPM (revolutions per minute) or in percentage of rated speed. Adjusting the speed of the folder roll is typically done in increments, such as 2%, 5%, or 10%.
To ensure accuracy, the folder roll speed should be checked periodically and adjusted as needed. This is typically done using a tachometer, which is a measuring device that measures the speed of rotation or the angular velocity of a rotating object. When using a tachometer, it is important to make sure that the same speed is measured at both the leading and trailing edge of the folder roll.
It is also important to remember that when setting up a folder machine, the speed of the folder rolls must be taken into consideration. The correct folder roll speed will help to ensure accurate and efficient performance from the machine, and help to reduce wear and tear on the various components of the folder machine. Properly setting the folder roll speed can help improve the quality of the product being produced and help to minimize the amount of wasted product.
