{"id":6137,"date":"2023-07-26T10:22:51","date_gmt":"2023-07-26T10:22:51","guid":{"rendered":"https:\/\/www.fhopepack.com\/videos\/?p=6137"},"modified":"2026-10-22T00:16:46","modified_gmt":"2026-10-22T00:16:46","slug":"steel-sheet-and-frame-flipping-turning-machine","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/steel-sheet-and-frame-flipping-turning-machine\/","title":{"rendered":"Packaging Equipment: Technology and Best Practices"},"content":{"rendered":"<p>Packaging equipment for heavy industrial loads requires specialized handling to ensure safety and efficiency. This guide explains how hydraulic dual-arm flippers turn large welded frames and plate stacks, addressing the limitations of crane-only operations. It details the FPFT-12 class configuration, observed kinematics, and the specific data required to confirm a machine\u2019s suitability for your production line.<\/p>\n<h2>Overview<\/h2>\n<p>Large welded frames and plate stacks are difficult to turn using a crane alone due to swing risks and the inability to access both faces for processing or inspection. A dual-arm hydraulic flipper provides a guided path for these loads, allowing workers to manipulate heavy items safely on a fixed station. The following video demonstrates the kinematics of such a system.<\/p>\n<iframe loading=\"lazy\" width=\"940\" height=\"535\" src=\"https:\/\/www.youtube.com\/embed\/AIuPwDB9Utg?rel=0\" title=\"Packaging Equipment: Technology and Best Practices\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<h2>Why frames and sheets need a dual-arm flipper<\/h2>\n<p>Manual or crane-based turning of large industrial components introduces significant safety hazards. When a heavy frame is suspended by a crane, it swings unpredictably, making precise placement difficult and increasing the risk of collision with personnel or equipment. Furthermore, cranes typically allow access to only one face of the object at a time, requiring complex rigging to inspect, weld, or package both sides.<\/p>\n<p>A dual-arm hydraulic flipper solves this by securing the load between two guided arms. This setup keeps the load stable and on a controlled trajectory throughout the rotation. Both faces of the frame or sheet stack become accessible without moving the base position, streamlining workflows for fabrication, quality inspection, and final packaging. This method is distinct from coil upenders or pallet handlers, focusing specifically on rigid, flat, or framed structures.<\/p>\n<h2>Layout: twin arms and a side hydraulic power unit<\/h2>\n<p>The observed machine features a robust blue steel structure with two flip arms mounted on a common base. These arms are driven by yellow hydraulic cylinders. A separate black hydraulic power unit, containing the motor and pump, is located at the side of the machine. Yellow hoses connect the power unit to the cylinders, ensuring efficient fluid transfer.<\/p>\n<p>The design ensures that the load is cradled between the arms during the flip. At mid-travel, the arms maintain a sandwiched position, preventing the load from free-falling onto the receive face. That cradling geometry is what holds the load rather than a separate interlock device; interlock hardware for the station is a distinct item specified with the guarding package. The system&#8217;s speed is adjustable, allowing operators to match the cycle to the load&#8217;s weight and center of gravity. The maximum system pressure is rated at 15 MPa, with an allowance up to 20 MPa.<\/p>\n<h2>The machine shown<\/h2>\n<p>Video evidence from the FPFT-12 class demonstration shows the machine operating in an empty state. The left arm starts in a raised position while the right arm is tilted down. As the cycle progresses, the arms swing toward a near-horizontal mid-position and then reverse back to the start pose. This movement verifies the kinematics and valve tuning before any loaded trials.<\/p>\n<p>It is important to note that no sheet or frame is loaded in this specific demonstration. The video confirms the mechanical motion but does not provide data on load capacity, cycle time under load, or dimensional constraints. The control panel, including screens, buttons, or emergency stops, is not visible in the footage. Therefore, safety interlocks and interface details must be confirmed through technical documentation rather than visual observation.<\/p>\n<h2>FPFT-12 class data for this station<\/h2>\n<p>The FPFT-12 class represents a specific configuration for handling heavy frames and sheets. The following table lists the nominal specifications provided by the manufacturer. These values are reference points; exact configurations are confirmed per project based on the order drawing.<\/p>\n<table>\n<thead><tr><th>Item<\/th>\n<th>FPFT-12 class<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Platform (L \u00d7 W \u00d7 H)<\/td>\n<td>4,600 \u00d7 2,500 \u00d7 1,400 mm<\/td><\/tr>\n<tr><td>Max flipping load<\/td>\n<td>12 t<\/td><\/tr>\n<tr><td>Motor output<\/td>\n<td>8.0 kW<\/td><\/tr>\n<tr><td>Working tables<\/td>\n<td>A\/B contact faces 500 \u00d7 1,800 mm each<\/td><\/tr>\n<tr><td>Max pressure<\/td>\n<td>15 MPa (allowance 20 MPa)<\/td><\/tr>\n<tr><td>Power supply<\/td>\n<td>380 V 3P 50 Hz<\/td><\/tr>\n<tr><td>Loading<\/td>\n<td>Forklift \/ crane \/ hoist<\/td><\/tr>\n<\/tbody><\/table>\n<p>The working tables provide contact faces for the load. The machine can be loaded using a forklift, crane, or hoist, offering flexibility in integration with existing material handling systems. Exact arm span and pad layout for specific frame geometries are confirmed on the order drawing, not fixed in the general specification.<\/p>\n<h2>How this station differs from the parallel-bar sheet flipper<\/h2>\n<p>The two machines share the FPFT-12 load class but not the way they hold the load, and that difference decides which one fits a given workpiece. This station grips a welded frame between two arms that stay in contact through mid-travel, which suits a frame with open sides that can be entered by the arms. The parallel-bar sheet flipper carries a plate stack on a solid bar face and tilts it through vertical onto a second table, so it works on a closed stack that has no opening to grip. Contact method, guarding envelope and floor space follow from that difference, so the two are not interchangeable on one drawing.<\/p>\n<h2>Worked example: a 6 t frame stack<\/h2>\n<p>To illustrate the application, consider an illustrative welded frame pack with a plan size of approximately 2,200 \u00d7 1,600 mm and a mass of 6 t. This load is handled via forklift.<\/p>\n<p><strong>Takeaway:<\/strong> Real frame footprint and weight must be provided before finalizing arm span and pad type. The illustrative nature of this example means it does not guarantee performance for all 6 t loads, particularly those with unusual geometries.<\/p>\n<h2>Selection checklist: what to send us<\/h2>\n<p>A valid configuration needs a complete input set; several of these items change the build rather than the options list.<\/p>\n<ol>\n<li><strong>Frame or sheet dimensions:<\/strong> Plan size (length and width), thickness, and maximum weight.<\/li>\n<li><strong>Loading method:<\/strong> Whether a forklift, crane, or hoist will be used.<\/li>\n<li><strong>Pad material requirement:<\/strong> Whether painted frames require non-marking pads or bare plate requires high-friction surfaces.<\/li>\n<li><strong>Safety integration:<\/strong> Whether external light curtains, fencing, or specific interlock protocols are required for the facility.<\/li>\n<li><strong>Arm span and contact face:<\/strong> The reach the frame needs between the arms and the contact face it sits on, including any part of the frame that overhangs the arms. The working tables are rated at 500 \u00d7 1,800 mm each; whether that suits the frame is settled on the drawing.<\/li>\n<li><strong>Centre of gravity:<\/strong> How far the frame&#8217;s centre of gravity sits from the geometric centre, since an off-centre frame loads the two arms unequally and changes the clamping and speed settings.<\/li>\n<li><strong>Duty cycle:<\/strong> Required flips per hour and shift length.<\/li>\n<li><strong>Floor space and overhead clearance:<\/strong> The working envelope around the arms and the room to land the load on the receiving side.<\/li>\n<li><strong>Electrical supply:<\/strong> Site voltage, phase and frequency, checked against the 380 V 3P 50 Hz build.<\/li>\n\n<p>The arm span, pad layout and guarding concept are frozen at the order drawing stage, before the hydraulic package is released for build.<\/p>\n<h2>Safety and EN 415-10<\/h2>\n<p>For markets requiring CE certification, safety design follows EN 415-10, evaluated using an ISO 12100 risk assessment method. The primary hazards include swinging arms, cylinder pinch points, and the forklift interface zone. Personnel must be kept out of the arm envelope during motion.<\/p>\n<p>Certification of a delivered machine is confirmed in the project ordering agreement. The machine itself is not pre-certified; rather, the final configuration is validated against the relevant standards. Guard layout and interlock configuration are not visible in the empty-cycle video and must be specified during the engineering phase.<\/p>\n<h2>Engineering FAQ<\/h2>\n<p><strong>Q: How is this different from the parallel-bar sheet flipper?<\/strong><\/p>\n<p>A: This station uses two blue hydraulic arms and a side power unit. The parallel-bar machine uses a platen of metal bars on a dark-grey body. Both can sit in the FPFT-12 load class, but the arm geometry and load contact method differ.<\/p>\n<p><strong>Q: Why show an empty cycle?<\/strong><\/p>\n<p>A: Empty-cycle runs prove the arm path and valve tuning before the first loaded trial. Loaded times depend on mass and forklift takt, which cannot be observed in an empty demo.<\/p>\n<p><strong>Q: Which standard do you cite for CE?<\/strong><\/p>\n<p>A: EN 415-10 with an ISO 12100 risk assessment.<\/p>\n<h2>Next step<\/h2>\n<p>To proceed with a real configuration, please send the following data to the supplier:<\/p>\n<ol>\n<li>Frame or sheet size and max weight.<\/li>\n<li>Loading method, and the destination market for safety compliance.<\/li>\n<li>Specific pad material requirements and any external safety interlock needs.<\/li>\n\n<p>We reply with a proposal after we confirm the details.<\/p>\n<h2>Related reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/big-frame-flipper-for-180-degree-turning\/\">Big Frame Flipper for 180 Degree Turning<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/hydraulic-upender-rotates-drywall-sheets-sheet-turner\/\">Hydraulic Upender Rotates Drywall Sheets (Sheet Turner)<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/steel-sheet-flipper-and-upender-machine\/\">Steel Sheet Flipper And Upender Machine: Technology and Best Practices<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/Hydraulic\/Steel-Sheet-Flipper-and-Upender-machine.html\">Steel Sheet Flipper and Upender machine (product)<\/a><\/li>\n<\/ul><\/ol><\/ol>","protected":false},"excerpt":{"rendered":"<p>Packaging equipment for heavy industrial loads requires specialized handling to ensure safety and efficiency. This guide explains how hydraulic dual-arm flippers turn large welded frames and plate stacks, addressing the limitations of crane-only operations. It [&hellip;]<\/p>","protected":false},"author":5,"featured_media":6140,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Sheet and Frame Flipping Equipment Guide | FHOPE","_seopress_titles_desc":"Hydraulic dual-arm sheet and frame flipper: FPFT-12 12 t class, empty-cycle kinematics, worked example and EN 415-10 notes for plate 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