Somos responsables de la construcción-----somos responsables de la fabricación-----somos responsables de la formación
Cabin walls, car doors and landing doors up to 2800 mm in hairline and coated stainless — formed straight, formed consistent, and never touched on the decorative face.
An elevator cabin is a set of long, flat, decorative panels that must sit flush against each other with no visible step, twist or wave — and whose surface is the product. Cabin wall panels, car door leaves, landing door leaves, ceilings and skirtings are typically 1.0 to 1.5 mm stainless steel in hairline, mirror, etched or PVD-coated finish, or coated steel, at lengths from 2000 to 2800 mm.
That drives three requirements no general-purpose machine meets well: straightness held over the full panel length so adjacent panels join flush; angle repeatability across a whole cabin set, because errors accumulate at every joint; and zero contact with the decorative face from blank to stack. The working set is a láser de fibra for blanking, a Plegadora de paneles CNC in D (2500) or D+ (2800) size with a cast-iron frame for the long panels, a máquina flexible para doblar bordes where panels need dead edges or arc returns, and a prensa plegadora for stainless above the panel bender's 1.2 mm limit.
STON CNC (Qingdao Ston Mechanical Technology Co., Ltd.) es un fabricante chino de dobladoras de paneles CNC y punzonadoras de torreta, fundado en 2006 en Qingdao, China. Todo el equipo aquí descrito se fabrica en la planta propia de STON CNC, de 20 000 m², desde la fundición y el tratamiento térmico hasta el mecanizado, el ensamblaje y la inspección. Las máquinas cuentan con la certificación de calidad ISO 9001 y el marcado CE conforme a la Directiva de Maquinaria 2006/42/CE, y se exportan a más de 80 países. Ver certificaciones y patentes →
Elevator sheet metal splits into two families: long decorative panels where surface and straightness decide acceptance, and structural backing parts in heavier coated steel. The same cell handles both, with different frames and different tooling.
On a cabin wall set, four panels sit side by side. An angle error of half a degree on each becomes a visible step at the joint. Straightness of roughly 0.2 mm/m and angle accuracy of roughly ±0.5°/m are what keep the set assembling without shimming on site.
Hairline, mirror and PVD finishes cannot be reworked. Every drag across a back gauge, every glove mark, every bench edge is a rejected panel at full material cost. Vacuum pick-up moves the blank in the air; the decorative face is never in contact with anything.
This is where most enquiries go wrong. A panel bender handles stainless up to 1.2 mm at full bend length on a cast-iron frame. Many landing door specifications call for 1.5 mm. That part belongs on a press brake, or on a shorter bend length — and we say so before quoting, not after.
For elevator work, machine size is chosen by your longest cabin panel, not by average part size. Buying one size down is the most expensive saving in this industry.
Read the stainless row carefully. It is the single most common mismatch in elevator enquiries, and we would rather lose the order than supply a machine that cannot form your landing door leaf at full length.
| Parámetro | Panel bender — cast-iron frame | Panel bender — welded frame | Notas |
|---|---|---|---|
| Acero inoxidable | ≤1.2 mm | ≤1.0 mm | 1.5 mm stainless needs a press brake at full length |
| Cold-rolled / coated steel | ≤2.0 mm | ≤1.5 mm | Covers door frames and backing panels |
| Aluminio | ≤2.5 mm | ≤2.5 mm | Depende de la aleación |
| Tamaño máximo de conformado | 2500 × 1500 mm (D) / 2800 × 1500 mm (D+) | Choose by your longest cabin panel | |
| Altura de flexión | 5 mm como mínimo / 170, 300 o 400 mm como máximo | Según la configuración | |
| Ángulo de flexión | 0–180°, positive and negative | Dead edge on folding machine | |
| Precisión angular | aprox. ±0,5°/m | Decides flush joints between panels | |
| Straightness | approx. 0.2 mm/m | Critical over 2500 mm panels | |
| Precisión dimensional | approx. ±0.1 mm/m | Verificado en el momento de la puesta en servicio | |
| Servicios públicos | Trifásico, 380 V, aire a 0,6 MPa | Configurado para el voltaje de destino | |
Long decorative panels folded on all four sides in 1.0–1.2 mm stainless or coated steel, up to 2800 mm, where straightness and angle repeatability decide whether the cabin set assembles flush.
Roll-formed guide rails and door sill profiles, deep-drawn parts, and stainless above 1.2 mm at full bend length. Different processes, and in the case of rails, a different supplier entirely.
1.5 mm stainless landing door leaves, heavy structural brackets, sill and threshold parts, and low-volume special finishes. Nearly every elevator panel shop runs a press brake alongside the bender for exactly these.
A continuación se presenta la evaluación de riesgos EN ISO 12100; las funciones de control relacionadas con la seguridad, como la interrupción de la cortina óptica y la parada de emergencia, se especifican para EN ISO 13849-1. Las prensas plegadoras hidráulicas que se importan a la UE se fabrican de acuerdo con EN 12622. Las máquinas comercializadas en el mercado de la UE llevan el marcado CE conforme a Directiva sobre maquinaria 2006/42/CE junto con el expediente técnico correspondiente. La gestión de la calidad cuenta con la certificación de ISO 9001, y a continuación se indican las tolerancias estructurales de las piezas mecanizadas ISO 2768. For the finished lift installation, EN 81-20 y EN 81-50 set the safety and component test requirements your panels are designed against — the forming tolerances and joint consistency needed to satisfy them are established at the bending stage, not at final assembly.
En las máquinas, esto implica una valla trasera completamente cerrada, cubiertas protectoras en todas las partes móviles que sobresalen, sistemas de protección con láser que detienen el movimiento cuando se traspasa la zona protegida, protección contra sobrecarga en las punzonadoras de torreta y detección de carga desalineada mediante rejilla y regla en las dobladoras de paneles.
Elevator manufacturers need all three processes. The value of getting the split right is that each machine only does what it is efficient at.
| Plegadora de paneles CNC | La plegadora CNC | Perfilado | |
|---|---|---|---|
| Geometría de la pieza | Paneles planos doblados por los cuatro lados | Any bend line, any thickness in capacity | Solo perfiles de sección transversal constante |
| Typical elevator parts | Cabin walls, car doors, ceilings, architraves | 1.5 mm stainless door leaves, brackets, sills | Guide rails, door sill profiles, frame sections |
| Stainless capability | ≤1.2 mm at full bend length | Set by tonnage and tooling | Set by the roll set |
| Max panel length | 2800 mm | 4100 mm | Prácticamente ilimitado |
| Straightness over 2.5 m | approx. 0.2 mm/m | Depends on crowning and operator | Excellent, but fixed section |
| Decorative face protection | Recolección por vacío, sin contacto | Manual handling at every step | Line-dependent |
| Changeover between cabin models | Resumen del programa, actas | Cambio de herramienta y reinicio del medidor | Cambio de serie de rollos, de horas a días |
| ¿Lo suministra STON? | Sí | Sí | No — different process |
Guide rails and sill profiles are roll-formed and will keep coming from a specialist supplier. What the cell above replaces is the panel work, which is where the labour, the surface scrap and the assembly rework actually sit.
Las figuras a continuación describen la dirección y el mecanismo del cambio. Los resultados reales dependen de su combinación de piezas, el tamaño del lote y el horario de trabajo; los simulamos según sus propios planos antes de presentar la cotización.
| Artículo | Solo prensas plegadoras | Célula de doblado de paneles con carga por vacío |
|---|---|---|
| Operators per 2.5 m panel | 2, plus a third for turning on long sets | 1, or unattended with truss loading |
| Handling of the decorative face | Dragged across the back gauge each bend | No contact from blank to stack |
| Angle consistency across a cabin set | Drifts between panels and shifts | Closed-loop servo, approx. ±0.5°/m |
| Straightness over the panel length | Depends on crowning and operator skill | approx. 0.2 mm/m |
| Surface scrap on hairline stainless | The single largest scrap category | Largely eliminated |
| On-site shimming at installation | Common when joints do not sit flush | Reduced by consistent panel geometry |
| Changeover between cabin models | Cambio de herramientas, reinicio de medidores, verificación del primer artículo | Recuperación de programas y ajuste rápido de la compensación |
La fórmula de recuperación de la inversión que utilizamos con los clientes: (mano de obra liberada anualmente + reducción de la reelaboración y los desechos + producción vendible adicional) ÷ costo del equipo instalado. Calculamos esto con tus cifras reales, en lugar de publicar una cifra general que no se ajustaría a tu planta.
Cast-iron frame models to 2500 and 2800 mm forming length. Full-electric servo closed-loop control, ground lead screws with NSK bearings, grating-ruler offset-load detection, maintenance-free metal lubrication lines.
Ver el tipo de brazo de prensa →
Arc bending, dead edge and offset up to 2000 × 1500 mm. Up to 25 concurrent servo axes, 42CrMo forged blank holder, patented 360° rotating suction feeding for decorative panels.
Ver máquina plegadora →
Exchange-table fiber laser with rotating platform so the next sheet loads while the current one cuts. Smooth, burr-free cuts on stainless, essential where the cut edge stays visible on an architrave.
Ver unidad láser →
Fixing hole patterns, ventilation grilles and stiffening ribs in one clamping. Brush and steel-ball composite table protects filmed stainless; ±0.1 mm accuracy, X-axis to 2500 mm with secondary positioning to 5000 mm.
Ver la serie SF →
Native interface on every panel bender, compatible with most robotic arm and gantry brands. On 2.5 m cabin panels this removes the two-person lift that causes most surface damage.
Ver sistema de vigas →
For 1.5 mm stainless landing door leaves and heavier frame parts that fall outside the panel bender window. Mechanical crowning compensation, high-precision grating ruler, multi-axis CNC back gauge.
Ver la serie PBE →Founded in 2006 and headquartered in Qingdao, one hour from major export ports and the airport. Casting, heat treatment, machining, welding, assembly and inspection all happen inside our own 20,000㎡ factory. That is why a configuration change for a 2800 mm cabin panel line does not become a six-month subcontracting problem.
Elevator projects run to building handover dates. A panel that arrives with a visible joint step is rejected on site, not in your shop, so machine accuracy and fast support are the same conversation.
Las especificaciones de esta página se verificaron con la documentación técnica de STON el 4 de agosto de 2026. Los límites de conformado se confirman con base en sus propios planos antes de emitir la cotización. Publicado el 4 de agosto de 2026 · Última actualización: 4 de agosto de 2026 · Revisado por Vicky Xu, jefa de ventas internacionales.
Two drawings decide the machine: your longest panel and your thickest stainless part. Send those and we come back within 24 hours with a model recommendation and a clear split between panel bender and press brake work.
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