{"id":3654,"date":"2021-04-06T09:55:39","date_gmt":"2021-04-06T09:55:39","guid":{"rendered":"https:\/\/www.fhopepack.com\/videos\/?p=3654"},"modified":"2026-10-19T19:41:19","modified_gmt":"2026-10-19T19:41:19","slug":"panel-turnover-plywood-turner-machine","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/panel-turnover-plywood-turner-machine\/","title":{"rendered":"Panel Turnover, Plywood Turner Machine: Technology and Best Practices"},"content":{"rendered":"<blockquote>\n<p><strong>Executive summary<\/strong><\/p>\n<p>Plywood, MDF and building-board stacks often have to be turned, for inspection, a pallet swap or edge storage. Flipping a stack of panels with a forklift or by hand marks the faces and can drop the load.<\/p>\n<p>A ring-type panel turnover machine clamps the whole stack inside a steel ring, rolls the ring on drive rollers and sets the stack down in its new orientation. This page covers how it works, ring sizing and what to check before you order.<\/p>\n<\/blockquote>\n<iframe loading=\"lazy\" width=\"940\" height=\"535\" src=\"https:\/\/www.youtube.com\/embed\/Npe1oZ7Um6Q?rel=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<p>Our panel turner is a large O-shaped steel ring standing on a base frame with motor-driven support rollers. A plywood stack sits on the lower platen inside the ring, and a hydraulic top platen clamps it. The ring then rolls through 90\u00b0 to stand the stack on edge, or on to 180\u00b0 to turn it upside down. An operator runs the cycle from a separate push-button control cabinet beside the machine.<\/p>\n<h2 id=\"table-of-contents\">Table of Contents<\/h2>\n<ul>\n<li><a href=\"#why\">Why turn panel stacks by machine<\/a><\/li>\n<li><a href=\"#how\">How the ring turner works<\/a><\/li>\n<li><a href=\"#design\">Design points<\/a><\/li>\n<li><a href=\"#sizing\">Sizing the ring for your stack<\/a><\/li>\n<li><a href=\"#selection-checklist\">Selection checklist<\/a><\/li>\n<li><a href=\"#safety\">Safety<\/a><\/li>\n<li><a href=\"#engineering-faq\">Engineering FAQ<\/a><\/li>\n<li><a href=\"#next-step\">Next step<\/a><\/li>\n<li><a href=\"#related-reading\">Related reading<\/a><\/li>\n<li><a href=\"#sources\">Sources<\/a><\/li>\n<\/ul>\n<h2 id=\"why\">Why turn panel stacks by machine<\/h2>\n<p>A stack of plywood is heavy, wide and slippery between sheets. Tipping it with forks scuffs the face veneer and the sheets can slide out of square. Turning by hand is only possible sheet by sheet. A clamped ring turn keeps every sheet pressed together, so the stack arrives in the new position square and undamaged.<\/p>\n<p>Typical jobs are turning stacks to check both faces, changing a broken pallet, laying stacks flat after edge storage, and standing stacks upright for container loading.<\/p>\n<h2 id=\"how\">How the ring turner works<\/h2>\n<ol>\n<li><strong>Load:<\/strong> a forklift or roller conveyor places the stack on the lower platen inside the ring.<\/li>\n<li><strong>Clamp:<\/strong> the hydraulic top platen lowers onto the stack and holds it at a set pressure.<\/li>\n<li><strong>Roll:<\/strong> geared motors drive the support rollers under the ring, and the ring turns with the stack inside.<\/li>\n<li><strong>Stop:<\/strong> the ring stops at 90\u00b0 (stack on edge) or 180\u00b0 (stack inverted), set by limit switches.<\/li>\n<li><strong>Release:<\/strong> the platen opens and the stack is taken out on the other side or from the same side.<\/li>\n<\/ol>\n<h2 id=\"design\">Design points<\/h2>\n<ul>\n<li><strong>Ring and rollers:<\/strong> the load turns about the ring centre, so the motors only overcome the offset of the load&#8217;s centre of gravity and roller friction, not lift the whole weight.<\/li>\n<li><strong>Hydraulic clamp:<\/strong> pressure is set for the panel type; too little lets sheets slide, too much crushes soft boards or edges.<\/li>\n<li><strong>Platen pads:<\/strong> wide platens spread the force across the top sheet so no single area is marked.<\/li>\n<li><strong>Centring:<\/strong> the stack should sit close to the ring centre; an off-centre stack makes the ring want to run on by itself near the end of the turn, so drive brakes hold it.<\/li>\n<li><strong>Controls:<\/strong> separate cabinet with push buttons, so the operator stands clear of the ring.<\/li>\n<\/ul>\n<p>Ring size, rated load, turning time and motor power are matched to your stacks and confirmed at quote.<\/p>\n<h2 id=\"sizing\">Sizing the ring for your stack<\/h2>\n<p><strong>Check: the stack&#8217;s cross-section must turn inside the ring. Diagonal d = \u221a(stack width\u00b2 + stack height\u00b2) + clearance \u2264 ring inner opening.<\/strong> The panel length runs along the ring axis and sets the platen length, not the ring opening.<\/p>\n<p>Example only, for a 4 \u00d7 8 ft panel lying flat:<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left\">Item<\/th>\n<th style=\"text-align: left\">Value (example)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\">Stack width<\/td>\n<td style=\"text-align: left\">1,220 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Stack height<\/td>\n<td style=\"text-align: left\">1,000 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Panel length (along ring axis)<\/td>\n<td style=\"text-align: left\">2,440 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Diagonal \u221a(1,220\u00b2 + 1,000\u00b2)<\/td>\n<td style=\"text-align: left\">\u2248 1,577 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Clearance<\/td>\n<td style=\"text-align: left\">about 100 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Ring inner opening needed<\/td>\n<td style=\"text-align: left\">about 1,680 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Platen support length<\/td>\n<td style=\"text-align: left\">close to 2,440 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Turning angle<\/td>\n<td style=\"text-align: left\">90\u00b0 or 180\u00b0<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Rated load, turning time, motor power<\/td>\n<td style=\"text-align: left\">confirmed at quote<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The ring is open at both ends, so a long panel can pass through it; the platens must still support the stack along its length so the overhang does not sag. The final ring size is confirmed at quote.<\/p>\n<h2 id=\"selection-checklist\">Selection checklist<\/h2>\n<ol>\n<li>Panel length, width and stack height range?<\/li>\n<li>Heaviest stack weight?<\/li>\n<li>Turn to 90\u00b0, 180\u00b0, or both?<\/li>\n<li>Loaded by forklift or on a conveyor line?<\/li>\n<li>With or without a pallet under the stack?<\/li>\n<li>Surface sensitivity: raw, sanded or coated faces?<\/li>\n<li>Power supply at the site?<\/li>\n<\/ol>\n<h2 id=\"safety\">Safety<\/h2>\n<p>We design turning machines to EN ISO 12100:2010 for risk assessment, EN 415-10 for machine safety and EN 60204-1 for electrical equipment. The working zone around the ring is guarded or fenced, the clamp holds pressure if power is lost, and the E-stop is on the control cabinet.<\/p>\n<h2 id=\"engineering-faq\">Engineering FAQ<\/h2>\n<p>Q: Will the sheets slide during the turn?\nA: Not while the platen clamps the stack; pressure is set for the board type.<\/p>\n<p>Q: Can it turn stacks with a pallet?\nA: Yes, the pallet is clamped with the stack; after a 180\u00b0 turn it is on top and can be swapped.<\/p>\n<p>Q: Is it only for plywood?\nA: No. MDF, particle board, EPS panels and sheet stacks turn the same way if they fit the ring.<\/p>\n<p>Q: How long is one turn?\nA: The turning time depends on ring size and load and is confirmed at quote.<\/p>\n<h2 id=\"next-step\">Next step<\/h2>\n<ol>\n<li><strong>Send your stack sizes and weights<\/strong> to info@fhopepack.com.<\/li>\n<li><strong>We size<\/strong> the ring, clamp and drive.<\/li>\n<li><strong>We reply within 24 hours<\/strong> with a proposal and quotation.<\/li>\n<\/ol>\n<h2 id=\"related-reading\">Related reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/Mechanical\/Load-Inverter.html\">Load inverter (product)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/mdf-boards-eps-panels-pallet-changer-from-fhope-team\/\">MDF boards and EPS panels pallet changer (video)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/c-type-180-degree-pallet-turnover-and-pallet-inverter-from-fhope\/\">C-type 180\u00b0 pallet turnover and inverter (video)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/steel-sheet-flipper-and-upender-machine\/\">Steel sheet flipper and upender machine (video)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/how-180-turning-machines-work-for-precast-components-and-sheets-in-the-production-process\/\">180\u00b0 turning machines for precast components and sheets (video)<\/a><\/li>\n<\/ul>\n<h2 id=\"sources\">Sources<\/h2>\n<ul>\n<li>FHOPE panel turnover machine shown above<\/li>\n<li>EN ISO 12100:2010; EN 415-10; EN 60204-1<\/li>\n<li>Geometry: diagonal check by Pythagoras<\/li>\n<\/ul>\n<p><strong>Last reviewed:<\/strong> 2026-10-20<\/p>","protected":false},"excerpt":{"rendered":"<p>Executive summary Plywood, MDF and building-board stacks often have to be turned, for inspection, a pallet swap or edge storage. Flipping a stack of panels with a forklift or by hand marks the faces and [&hellip;]<\/p>","protected":false},"author":5,"featured_media":3648,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Panel Turnover, Plywood Turner Machine | FHOPE","_seopress_titles_desc":"How a ring-type panel turnover machine clamps a plywood stack and rolls it 90\u00b0 or 180\u00b0: working steps, ring sizing check and selection 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