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Summary

Unwind Stands - Shafted

The Double E Group provides completely custom shafted roll stands to suit specific winding applications. Stands and drop-in modules for unwinding are both available. High quality accessories include Double E Group shafts, safety chucks, rollers, brakes, tension controllers, and web guides; and Mario Cotta slitting equipment.

Unwind Stands from the Double E Group

Double E Group provides completely custom shafted roll stands to suit specific winding applications. Stands and drop-in modules for unwinding are both available. High quality accessories include Double E Group shafts, safety chucks, rollers, brakes, tension controllers, and web guides; and Mario Cotta slitting equipment.

Double E Group unwind roll stands are pre-configured for easy integration into any converting process to upgrade or replace old or inefficient winding stations, or to add a new unwind station to an existing machine. These stands are packaged with all accessories working together, and warrantied by a single supplier. Prices for new equipment from the Double E Group are often lower than comparable used equipment.

Product Information

Shafted Unwind Roll Stands

The Double E Group has manufactured hundreds of unwind stands to suit a wide variety of applications. Whether you need a light duty cantilevered unwind stand, or a heavy duty reinforced stand for an aggressive application, the Double E Group has the experience to design and build exactly what is needed to meet the operating specifications.

Double E Company shafted unwind stands Shafted unwind stand from the Double E Company Unwind stand from Double E Company; shown with shaft removed.
Heavy duty unwind stand for unwinding web material Heavy duty unwind stand with core shaft and large diameter bladder chucks Triple unwind stand from the Double E Company


The triple unwind stand (bottom right) is an excellent example of the Double E Group's customization expertise. This stand is a unique design that was engineered for a producer of laminated film. The customer needed a more efficient method for manufacturing a five-layered material. Since the customer already had three individual stands, the Double E Group engineered this stand to replace one of those single unwind stands to give them a total of five unwind sections. This stand consisted of a control panel with three tension controllers, safety chucks holding three DG-2000 aluminum bladder shafts and regulated with load cells and pneumatic brakes.

Drop-In Unwind Modules

Double E Group can also offer drop-in or bolt-on modules to upgrade existing machines.

As an example, this custom module was created for a supplier of plastic sheets and roll stock. The customer needed a bolt-on double unwind stand with closed loop tension controls and load cell frames for regulating tension.

This stand consisted of two DG-2000 aluminum bladder shafts held by four safety chucks and regulated by two pneumatic brakes.

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Basic Roll Stand Configurations

Solution "S" - Open Loop Tension Control

The Solution Series Simple Unwind Stand is ideal when tension control is already established, and a stand is needed only to support the shaft, safety chucks, and brake. Standard model includes A-frame, 60” - 100” web width, 40” max roll diameter, steel “Dyna–Grip” lug shaft, Double E Group EE250 pneumatic brake, SP11 safety chucks, and one exit roller.

Options/Upgrades: web guiding, “Dura–Light” carbon fiber lug shaft, 60” max roll diameter, web width < 60” or > 100”.

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Solution "OL" - Open Loop Tension Control

Suitable when simple monitoring of roll diameter is enough to adjust tension. It is especially economical if the web path will allow for the A-frame only (without the optional exit roller stand). Base price includes A-frame, 60” - 100” web width, 40” max roll diameter, steel “Dyna–Grip” lug shaft, Double E Group EE250 pneumatic brake, SP11 safety chucks, one exit roller, and an open loop tension control system.

Options/Upgrades: web guiding, “Dura–Light” carbon fiber lug shaft, 60” max roll diameter, web width < 60” or > 100”, exit roller stand and extra roller.

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Solution "CL" - Closed Loop Tension Control

Delivers advanced web tension control with direct measurement and feedback from load cells. Base price includes 60” - 100” web width, 40” max roll diameter, steel “Dyna–Grip” lug shaft, Double E Group EE250 pneumatic brake, SP11 safety chucks, load cell stand, 3 exit rollers, and a closed loop tension control system with load cells.

Options/Upgrades: web guiding, “Dura–Light” carbon fiber lug shaft, 60” max roll diameter, web width < 60” or > 100”.

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Unwind Stand Accessories

Safety Chucks

Unique sliding design makes loading and unloading easy, guarantees roll security, and prevents finger jamming. Shaft placement is effortless with square-turned-45° (standard) or patented circular jaws for high speeds. Available sidelay adjustment for alignment and pivot table for baggy edge correction.

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Core Shafts

From lightweight carbon fiber lug shafts to simple metal strip shafts, the Double E Group offers any type of core shaft that you need.

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Rollers

Low-inertia carbon fiber rollers respond to changes in web speed to minimize web scratching and stretching. The Double E Group offers a low-cost model which can be close to the cost of a traditional aluminum roller.

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Brakes

Cool-running pneumatic brakes or electromagnetic powder brakes.

Tension Control

Load cells, tension controllers, ultrasonic sensors, integrated systems

Web Guiding with Shifting Actuator

Shifting actuators are perfect for simple web guiding from a shafted unwind stand. The Double E Group also offers pivot frames and steering rolls - all featuring an easy-to-use remote controller and accurate stepper motors.

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