WITELS-ALBERT
presents
MegaPower - MultiPurpose -
Straighteners
MP 7-15 3/4 PO
MP 7-15 4/3 PO
and
48 new roller guide models
The demands in terms of performance and versatility of products are constantly increasing. Customers require components for guiding, straightening, and transporting that are suitable for a wide range of process materials and cross-sectional geometries, ensure a large processing range, and can also resist high forces and moment loads over the long term.
Using our calculation, simulation, and design tools, we have managed to design a straightening unit that, like many other WITELS-ALBERT GmbH products, is unique worldwide. Seven straightening rollers, arranged in two rows with alternating offset positions, are used for the elastic-plastic deformation of the wire. In the MP 7-15 3/4 PO model, the row of 3 rollers on the operator side is assigned to the two head bars, which are equipped with mechanical position displays PO for defined and reproducible adjustment of the straightening rollers. Depending on the installation position of the straightening unit, the row of 4 rollers is located behind or below the process material. The MP 7-15 4/3 PO model uses the row of 4 rollers on the operating side for the straightening process.
The newly developed double head bar design of both models ensures precise support for the roller adjustment spindles and, with maximum stiffness, reliably withstands the forces transmitted to the spindles via the straightening rollers and sliders. The rollers are adjusted using a fine thread, which enables low-backlash and precise fine adjustment of the wire forming tools. The individual roller adjustment torque without load is preset at the factory and can be adjusted by the customer for each slider or adjustment mechanism. Specific elements in the force flow lubricate the system and prevent welding under high loads or high surface pressure. This allows the regreasable GB 80 SL high-performance straightening rollers to withstand the roller forces that arise when processing 15 mm round wire in accordance with standards EN 10270-1 (hard-drawn spring steel wire, type DH) and EN 10270-2 (oil-tempered wire, type FDC). In addition, stainless spring steel wires, which are generally available up to 10 mm in accordance with standard EN 10270-3, can be processed, e.g., austenitic steel 1.4301 (EN 10088, AISI 304). The straightening range of the MP 7-15 3/4 PO and MP 7-15 4/3 PO straightening units is specified as 4 mm to 15 mm. Alternatively to wire-shaped process materials, profile wires and tubes can be processed within the aforementioned straightening range. If necessary, the straightening range for all process materials can be exceeded or not reached, in which case a suitability test must be carried out by WITELS-ALBERT GmbH.
ONE for ALL ... Straightening range 4-15 mm ...
Maximum performance and reliability in a compact format ...
Process materials are manufactured and delivered in various forms. Guiding is one of the final steps in production and one of the first in further processing. Additionally, guiding plays a crucial role in manufacturing and processing lines when it comes to ensuring a defined position of the process material, which is necessary, for example, when using measurement technology or handling and automation. The required precision, the direction of material flow, and speed can be influential parameters in selecting suitable components for guiding. These components must fundamentally be capable of withstanding the static and dynamic forces and moments over an extended period. Wear in the tribological system is of high technical and economic significance and significantly determines the suitability of a component. Wear on the process material must be excluded. Macroscopic markings and microscopic surface changes that could adversely affect critical quality characteristics of the final product must be avoided. In this regard, components with rotating tools offer advantages over those using stationary tools for guiding process materials.
For good reason, WITELS-ALBERT GmbH offers almost exclusively components with rotating tools for the guiding process. The goal is to supply process material to upstream and downstream processes and components without collisions. Boundary conditions such as the cross-sectional geometry of the process material, the variety of geometries, and the design of upstream and downstream components determine whether guiding is required with respect to the neutral axis/zero line or with a fixed lower and/or rear edge. Due to the variety of boundary conditions, there are numerous models of guide rollers equipped with fixed, partially adjustable, or individually adjustable rollers.
Among the bestsellers of WITELS-ALBERT GmbH are the centric roller guides of the ZR series, which are manufactured in 6 sizes and in 5 different versions each. They are used in the wire, tube, cable, rope, and strip industries. Depending on the operating conditions, the roller guides can be equipped with CROMAX rollers, through-hardened rollers, or PET rollers. Sometimes specific roller groove geometries are required, which can be incorporated into the cylindrical rollers.
Due to the increasing demand for roller guides with individual roller adjustment, WITELS-ALBERT offers new standardized models in the ZR IR series. The extension IR stands for the feature of INDIVIDUAL ROLLER ADJUSTMENT. The standard models of the IR series come equipped with corresponding spindles, adjustment elements, and CROMAX rollers. As with the ZR series, alternative roller designs can be supplied upon request. The IR series models cover process materials with a maximum outer geometry of 250 mm.
The models in the new IRB series are recommended for strip handling. As with the models in the IR series, the rollers can be adjusted individually. A characteristic feature of the IRB series are the reduced-height vertical rollers, which are through-hardened at the factory to meet the high demands of strip processing. The IRB series models support the guiding of strip widths up to 250 mm.
Basically, the thickness and width range of the process material determine the required IR/IRB model. If the maximum opening of a selected IR/IRB model is too small, the model's structural width can be customized with minimal effort. This applies, subject to technical review by WITELS-ALBERT GmbH, to all models in the new IR and IRB series.
The integration of guiding and straightening, i.e., the combination of components for guiding and straightening process materials into a system, is supported by both new series of guide rollers. All versions of the IR/IRB 12 and IR/IRB 50 models serve straightening devices of the ER, RB, RT, and RTS series, supporting straightening ranges from 0.5 mm to 1.5 mm, 1.5 mm to 3.0 mm, and 3.0 mm to 7.0 mm. Customers benefit from being able to use compact, ready-to-install guiding and straightening systems.
WITELS-ALBERT GmbH, Malteserstraße 151-159, 12277 Berlin, Deutschland/Germany
Tel.: +49 30 723 988 0, FAX: +49 30 723 988 88, wire@witels-albert.com