{"id":6161,"date":"2026-10-12T13:33:25","date_gmt":"2026-10-12T05:33:25","guid":{"rendered":"https:\/\/www.raxdoors.com\/blog\/how-high-speed-stacking-door-works\/"},"modified":"2026-10-30T23:49:38","modified_gmt":"2026-10-30T15:49:38","slug":"how-high-speed-stacking-door-works","status":"publish","type":"post","link":"https:\/\/www.raxdoors.com\/es\/blog\/how-high-speed-stacking-door-works\/","title":{"rendered":"C\u00f3mo funcionan las puertas apilables de alta velocidad: un vistazo pieza por pieza"},"content":{"rendered":"

The lifting belt lets go without drama. A nylon strap that has quietly carried an eight-meter curtain twice a day finally frays through. One corner of the curtain drops, and the door locks out on its safety chain. The site crew reports it as a broken roller shutter, a spare arrives that fits nothing, and the opening sits sealed for three days. Nobody on site is at fault; nobody ever explained the machine.<\/p>\n

RAX has tooled and built high speed doors in Hebei since 1999 \u2014 21 models today, spanning 0.8 to 2.5 m\/s of curtain speed. Coiling, folding and stacking lines share one factory floor, so our published stacking data is specific: openings beyond 10 meters wide, up to 1.5 m\/s, rated Class 3 for wind. This page unpacks how a high speed stacking door works, part by part, so the next work order names the right component.<\/p>\n

What a High Speed Stacking Door Is<\/h2>\n

A high speed stacking door is a flexible-curtain door that solves big openings by folding rather than coiling. The curtain is built in sections, each stiffened by a horizontal wind bar and hinged to the section above it. When it opens, a high speed stacking door<\/a> lifts the whole curtain from the bottom edge and folds those sections into a compact pack above the header.<\/p>\n

That storage choice is the identity of the machine. Because the pack height follows the number of folds rather than the door height, the design reaches widths and heights that defeat a coiling curtain. Our own builds serve hangars, shipyards and wide warehouse walls where a standard fast door cannot span the opening.<\/p>\n

\n\"Worker
A stacking door is built from sections, and the sections are what fold \u2014 which is why panel stock and spare sections matter on day one.<\/figcaption><\/figure>\n

The Opening Cycle Step by Step<\/h2>\n

Six steps take the door from closed to fully open, and every service decision later hangs on them. Watch how a high speed stacking door works in sequence and the part names follow on their own. None of the six steps needs a crane or a second pair of hands, which is part of why the mechanism suits high-cycle openings.<\/p>\n

    \n
  1. A signal arrives: a radar detects the approaching forklift, an induction loop fires, or a driver presses a push button or remote.<\/li>\n
  2. The controller checks the drive is healthy and energizes the servo motor.<\/li>\n
  3. The motor, fed by a frequency converter, turns the top shaft and winds the lifting belts around the belt pulleys.<\/li>\n
  4. The belts pull the bottom beam upward, and the curtain rises with it.<\/li>\n
  5. Each section hinges upward at its wind bar joint and folds flat onto the section above it.<\/li>\n
  6. The stack seats above the header and the drive stops; closing replays the sequence in reverse, with the motor paying the belts out under control.<\/li>\n<\/ol>\n

    Timing matters as much as order. Our stacking line tops out at 1.5 m\/s opening and 1.0 m\/s closing, with both values set in the PLC controller. Ramps, not raw motor power, keep a curtain weighing several hundred kilograms from jerking as each fold turns over. Buyers comparing fabric layouts can see how PVC stacking doors<\/a> differ in curtain build and wind bar spacing.<\/p>\n

    Closing has its own discipline. The controller lowers the curtain at the set closing speed while the motor resists the curtain’s weight, so the stack unfurls in order instead of free-falling. The bottom beam meets its floor seal first, which compresses to close the gap, and only then does the controller cut torque. A door that slams instead of seating is telling you the closing profile was never tuned.<\/p>\n

    The Parts That Make the Fold Possible<\/h2>\n

    Five component groups turn that sequence from drawing into hardware. Each one owns a specific job in the cycle and, later in this page, a specific symptom when it wears.<\/p>\n