Grasping

(Handle with Care) This article is an introduction by equipment manufacturers on mastering web offset presses and how to use hot devices to manipulate the web. Guidance Systems: Getting Started Knowledge Web-guided systems should be placed where measurement is most needed. Typically, the web guiding system is placed far away from the critical process, and the accuracy of the data provided by the system will be far from the critical value that should be reached. The web guiding system is usually in a stable state of tension, so that it is not necessary to directly adjust the nip roller or tension regulating roller and try to keep them in the upstream direction of the guiding system. Selecting a web guide system can help correct excessive web offsets. However, keep in mind that the more deviations that are corrected, the more operations that are required, and may affect the geometry of the web guiding system. Match the edge detector to the material used. The swinging of the wide web shaft when unwinding is more pronounced than on a narrow web. Sufficient spacing and web guiding system can correct the speed and adjust the error caused by the swing. The roll needs sufficient entry and exit time to prevent the paper from breaking and breaking. The unwinding speed of the paper is usually faster than the film speed, so the web guiding system must fully adjust the speed of correction. Ultrasonic sensors are a good choice for film rolls. It can be used to determine if the pulling of the paper guide roller and the moving web is sufficient when the paper guide system is being modified. Roll metal foil is very easy to wrinkle, in order to avoid wrinkles, determine whether there is sufficient entry, exit and guide spacing. The new RDG system on the hot device Coast controller replaces the paper guides to accommodate web requirements from 12 inches to 28 inches wide for a variety of paper guidance systems. It has a three-point suspension system with double outer cams and motive force support, which allows almost no moving parts and maximum reliability in dusty or even dirty production conditions. Fife: When the bus speed reaches 5 Mbaud, the Fife guide device is controlled by the bus from the central control panel through the SBPC-20-CN protocol converter. The processor information is formatted as a number and waits for operation on the protocol converter. The converter can control a single, double or triple drive CDP-01 processor via a single node. BST PRO MARK recently joined a new member in the paper guide series - ekr3000. The operator can control the function of the entire system through a control pad, and it is integrated in the Profibus interface, allowing the system to be connected to the machine control. The function of the web guiding system can thus be finely controlled by the printer's PLC, and multiple paper guides on one machine can be controlled by a single control unit. Numerous piezoelectric elements are arranged in a row and Accu Web's ultrasonic edge detector eliminates the need for the translator to move the detector to accommodate the width of the web. In addition, the piezoelectric elements are arranged in rows and it becomes possible to detect the detection range. Tension: Getting Started Narrow Web requires only a small amount of tension. The cantilever machinery is often used. It requires a single mechanical structure and a sensor to reduce operating costs. The film is made of a very soft material and stretches easily, so accuracy is important. Film rolls made from dense materials are very heavy, so the need for additional inertia compensation is necessary to ensure braking. Closed loop tension control systems or tension sensor systems can be used. Paperboard is more able to withstand tension changes than lightweight paper or thin film. When updating existing equipment, it is important to remember that the machine operator must also retrain. When the roller is out of round or the tension changes instantaneously, it is recommended to use the web tension adjustment system. The load cell control system is used in different applications and when the tension is released. Tension: Hot Device Design Dynaweb EP350 is designed to control air brakes and clutches. It is a specially designed tension adjustment tension control system. EP series controllers incorporate many PID control loops in automatic gain control. MAGPOWR's TS tension sensor uses an unobtrusive design, requires minimal space in the machine structure, and is sized to accommodate web width specifications. All TS tension sensors have a dual beam design to ensure linear output under all load conditions. In addition, the sensor is suitable for a variety of device forms and options, and is suitable for inch and metric devices. Registration: The popular device CC1 provides a CRC-610L digital register control system designed for narrow web labeling equipment. The tiny mark in the designable mark model is suitable for almost any printing work, light color and self-defining color can be detected easily by CRC-610L CCD camera. The same can be integrated with die cutting, cutting and postpress processing control. BST PRO MARK is an AR200SA closed-loop register control system designed for a flexo CI printer that directly drives the printing unit on the CMM. With the AR200SA, printing plates only need to be installed and the precision does not exceed 1/8 inch. The system allows printing to start printing almost immediately, while registration requires only a small mark.