{"id":23264,"date":"2022-04-28T11:12:51","date_gmt":"2022-04-28T09:12:51","guid":{"rendered":"https:\/\/www.renova-srl.cn\/?p=23264"},"modified":"2022-07-29T17:31:45","modified_gmt":"2022-07-29T15:31:45","slug":"converting-load-cell-selection-guide-for-a-correct-detection-of-the-web-tension","status":"publish","type":"post","link":"https:\/\/www.renova-srl.cn\/en\/articles-and-case-studies\/converting-load-cell-selection-guide-for-a-correct-detection-of-the-web-tension\/","title":{"rendered":"Converting – load cell selection guide for a correct detection of the web tension"},"content":{"rendered":"
[vc_row][vc_column][vc_column_text animation_delay=”0″]The Converting industry includes diverse specializations in the processing of materials:<\/p>\n
    \n
  1. Printing<\/li>\n
  2. Die cutting and Roll slitting<\/li>\n
  3. Coating<\/li>\n
  4. Flexible packaging<\/li>\n<\/ol>\n[\/vc_column_text][vc_column_text animation_delay=”0″]\"\"<\/p>\n

    The Converting processes involve the unwinding or winding of a reel<\/strong> of different material also called web (web handling).<\/p>\n

    The web is moved along a system of rollers that must guarantee the right tension<\/strong> to prevent the material from tearing or wrinkling and to ensure that the final product therefore complies with the quality standards desired and required by the increasingly demanding market.<\/p>\n

    The main problems deriving from inadequate web tension regulation are productive waste and expensive new work.<\/p>\n

    To prevent this from happening, it is necessary to equip your machine with high quality integrated control systems<\/a><\/strong>.
    \nThere are open loop or closed loop regulation systems depending on the technology used for detecting the web tension (load cells, dancer roller, ultrasonic sensor, potentiometer, etc.).[\/vc_column_text]<\/span>[vc_single_image image=”27525″ img_size=”full”]<\/span>[vc_column_text animation_delay=”0″]    Load cells<\/strong><\/a> represent one of the most precise technologies and are used within closed loop regulation:<\/p>\n

      \n
    1. Load cells detect the web tension<\/strong> and send an input signal to the control panel.<\/li>\n
    2. Control panel compares the web tension<\/strong> detected with the \u2018set point\u2019 and send the input to the brake (or motor).<\/li>\n
    3. Brake (or motor) \u2013 adjust the torque (or rpm if a motor) in order to obtain the web tension required.<\/strong><\/li>\n<\/ol>\n

      Load cells are applied on rollers to precisely detect the tension of a web. Here’s how to select them:[\/vc_column_text]

      1. Model selection<\/span><\/span><\/h2>[vc_column_text animation_delay=”0″]Select the load cell type according to the specifications of your machine:<\/p>\n