{"id":6766,"date":"2012-07-11T06:13:18","date_gmt":"2012-07-11T11:13:18","guid":{"rendered":"https:\/\/www.insta-pro.com\/fr\/2012\/07\/11\/vibration\/"},"modified":"2017-11-14T12:48:07","modified_gmt":"2017-11-14T18:48:07","slug":"vibration","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/ingenierie-maintenance\/vibration\/","title":{"rendered":"Vibrations"},"content":{"rendered":"<p>N\u2019importe quelle personne poss\u00e9dant plus d\u2019une extrudeuse vous dira qu\u2019elle a une machine qui vibre plus que l\u2019autre. Comment \u00e7a se fait&#160;? Et que pouvez-vous faire&#160;?<\/p>\n<p>Tout d\u2019abord, vous devez r\u00e9fl\u00e9chir \u00e0 l\u2019endroit d\u2019o\u00f9 viennent les vibrations. Voici une liste des principales causes de vibrations, et ce qu\u2019il faut faire pour les \u00e9viter&#160;:<\/p>\n<p><strong>Probl\u00e8me&#160;:<\/strong> La base de l\u2019extrudeuse est install\u00e9e \u00e0 un endroit o\u00f9 le sol n\u2019est pas de niveau.<\/p>\n<p><strong>Solution&#160;:<\/strong> Essayez de placer l\u2019extrudeuse sur une partie du sol qui est de niveau.<\/p>\n<p><strong>Probl\u00e8me&#160;:<\/strong> Coussinets isolants non utilis\u00e9s.<\/p>\n<p><strong>Solution&#160;:<\/strong> Les coussinets isolants (amortisseurs de vibrations) sont simplement des coussinets en caoutchouc plac\u00e9s entre le sol et les pieds ou la base de la machine. Utilisez des coussinets isolants.<\/p>\n<p><strong>Probl\u00e8me&#160;: <\/strong>Lors de l\u2019installation, aucun ancrage au sol n\u2019a \u00e9t\u00e9 utilis\u00e9.<\/p>\n<p><strong>Solution&#160;: <\/strong>Des ancrages dans le b\u00e9ton (au plomb ou chimiques) devraient \u00eatre utilis\u00e9s. Les t\u00eates des ancrages devraient ressortir du sol \u00e0 travers les coussinets isolants et \u00e0 travers les trous pr\u00e9vus dans les pieds ou la base de l\u2019extrudeuse. Un \u00e9crou est ensuite plac\u00e9 sur le goujon d\u2019ancrage pour fixer le tout au sol.<\/p>\n<p><strong>Probl\u00e8me&#160;: <\/strong>Il arrive que des \u00e9quipements auxiliaires ou des armatures soient fix\u00e9s sur l\u2019extrudeuse, comme par exemple des convoyeurs, qui peuvent transmettre des vibrations.<\/p>\n<p><strong>Solution&#160;:<\/strong> \u00c9vitez dans la mesure du possible d\u2019ajouter des \u00e9l\u00e9ments sur l\u2019extrudeuse, ou de l\u2019utiliser comme une partie de la structure pour d\u2019autres \u00e9quipements.<\/p>\n<p><strong>Probl\u00e8me&#160;: <\/strong>Boulons de la plaque avant cass\u00e9s ou desserr\u00e9s. La plaque avant est fix\u00e9e sur le bo\u00eetier du palier, et l\u2019ensemble du bo\u00eetier arbre et palier sont \u00e0 leur tour mont\u00e9s dans le ch\u00e2ssis de l\u2019extrudeuse. La tension subie par les boulons de la plaque vient du couple sur l\u2019arbre principal, d\u00fb par exemple \u00e0 des courroies d\u2019entra\u00eenement trop tendues, \u00e0 l\u2019extrusion de produits riches en amidon, ou encore, bien souvent, au passage dans l\u2019extrudeuse de mati\u00e8res \u00e9trang\u00e8res comme des cailloux ou du m\u00e9tal.<\/p>\n<p><strong>Solution&#160;: <\/strong>\u00c9vitez les mati\u00e8res \u00e9trang\u00e8res en utilisant des ingr\u00e9dients propres et en installant des aimants dans l\u2019\u00e9quipement qui alimente l\u2019extrudeuse. Contr\u00f4lez les boulons de la plaque avant dans le cadre de l\u2019entretien, toutes les 600&#160;heures. Utilisez une cl\u00e9 dynamom\u00e9trique, r\u00e9gl\u00e9e sur 95&#160;ft.lb (128,8&#160;N.m). Remplacez les boulons cass\u00e9s, en utilisant du frein filet Loctite\u00ae (rouge, haute temp\u00e9rature).<\/p>\n<p><strong>Probl\u00e8me&#160;:<\/strong> Pi\u00e8ces excessivement us\u00e9es. Si les pi\u00e8ces internes s\u2019usent au-del\u00e0 de ce qu\u2019on peut consid\u00e9rer comme leur dur\u00e9e de vie normale, elles peuvent devenir d\u00e9s\u00e9quilibr\u00e9es. Les pi\u00e8ces d\u00e9s\u00e9quilibr\u00e9es peuvent causer une oscillation qui se transforme en vibration.<\/p>\n<p><strong>Solution&#160;: <\/strong>Intervertir et remplacer les pi\u00e8ces us\u00e9es selon le besoin.<\/p>\n<p><strong>Probl\u00e8me&#160;: <\/strong>L\u2019accumulation de salet\u00e9 sur l\u2019entra\u00eenement et ses poulies, ou sur les pales de ventilateur du moteur principal, peut causer des vibrations.<\/p>\n<p><strong>Solution&#160;: <\/strong>Maintenez l\u2019ensemble propre. Cela am\u00e9liorera en m\u00eame temps la dur\u00e9e de vie de tous les joints d\u2019\u00e9tanch\u00e9it\u00e9 \u00e0 l\u2019huile et \u00e0 la graisse.<\/p>\n<p><a href=\"http:\/\/www.insta-pro.com-content\/uploads\/2012\/07\/VibratingExtruder.png\" rel=\"attachment wp-att-7320\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-7320 aligncenter\" src=\"https:\/\/www.insta-pro.com\/wp-content\/uploads\/2012\/07\/VibratingExtruder-300x225.png\" alt=\"VibratingExtruder\" width=\"300\" height=\"225\" srcset=\"https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2012\/07\/VibratingExtruder-300x225.png 300w, https:\/\/instapro.spinuhost.com\/wp-content\/uploads\/2012\/07\/VibratingExtruder.png 328w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&#160;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>N\u2019importe quelle personne poss\u00e9dant plus d\u2019une extrudeuse vous dira qu\u2019elle a une machine qui vibre plus que l\u2019autre. Comment \u00e7a se fait&#160;? Et que pouvez-vous faire&#160;? Tout d\u2019abord, vous devez r\u00e9fl\u00e9chir \u00e0 l\u2019endroit d\u2019o\u00f9 viennent les vibrations. Voici une liste des principales causes de vibrations, et ce qu\u2019il faut faire pour les \u00e9viter&#160;: Probl\u00e8me&#160;: La [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":10560,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7177],"tags":[1280,1281,620,1282],"class_list":["post-6766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ingenierie-maintenance","tag-base-de-lextrudeuse","tag-coussinets-isolants","tag-durabilite-des-pieces-dusure-pour-lextrusion-fr","tag-vibrations"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Insta-Pro Extruders | How to Find and Mitigate Vibration<\/title>\n<meta name=\"description\" content=\"If your Insta-Pro extruder causes excessive noise or 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