Orthopac RVMC-15
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Modular straightening and process control system quality made in Germany teXtile nonWoVen coating & conVerting

Straightening and process control system TEXTIL NONWOVEN COATING & CONVERTING ORTHOPAC® RVMC-15 A modular designed system for fully automatic skew correction and process control Area of application Textile manufacturers and textile outfitters are fighting with increasing production and energy costs, declining profit margins, shorter production times as well as greater requirements on quality and flexibility. Cost-efficient and quality-focused textile outfitting thus becomes increasingly important. Sustained production and the trend to higher-quality, technically sophisticated textiles also...

The weft straightener Orthopac with integrated web distortion detection forms the basis of the modular design. Additional intelligent sensors can be connected to the control system via a bus connection. The following process parameters can be measured, visualized, controlled and documented by means of special software packages (Print Server). - Weft thread or course skew / skew and bow rollers of the straightener Orthopac RVMC - High moisture / squeezing pressure - Thread or course density / over-feed - Exhaust air humidity / fan speed / flap opening - Surface temperature / product web...

NONWOVEN COATING & CONVERTING ORTHOPAC FMC Bow and skew detection – simply unique Distortion detection Orthopac FMC: The scanning system is integrated in the straightening system or available as standalone device exclusively for distortion detection. Area of application Product highlights 3 ptimized optics for the O greatest possible angle resolution 3 Direct, non-delayed signal processing for fastest determination of angle distortion 3 Optimized transmitted and incident light system 3 Integrated pick or knittedcourse count 3 No product-specific adjustment required 3 High-speed scanning 3...

Principle of operation Web distortion in textiles can be determined in several ways. Distortions alter the regular bright-dark patterns in an illuminated moving fabric. The classical approach is to detect this signal modulation with an optical sensor (modulation principle). Apart from this, camera scanning can be used or both principles of function can be combined. The scanners of the weft scanner and control Orthopac must record the distortion immediately behind the straightener to be able to detect the result of the control process as quickly as possible. The industrial PC communicates...

NONWOVEN COATING & CONVERTING Optoelectronic scanning according to the modulation principle (scanner TK) Scanner TK with reflex light (integrated) and transmitted light A number of scanners and lamps are spaced evenly across the product web. The product runs between scanner and lamp. The structure of the passing weft threads and courses modulates the light intensity measured by the scanners. The structures repeat regularly creating bright-dark patterns. These patterns generate a modulated signal in the scanner’s receiver system. A centrallypivoted, cylindrical lens in the scanner oscillates...

Image scanning (scanners HTK or CTK) Several high-resolution cameras placed across the product width scan the passing material web. The angle of the weft thread is determined by FFT analysis. Interfering signals not agreeing with the frequency of weft threads, courses or rows of tufting are filtered digitally. Only signals relevant to distortion are analysed and the web distortion is calculated automatically and precisely from this. Suitable lighting versions (reflex light, transmitted light, power lights) are available also featuring automatic adjustment of the light intensity to different...

NONWOVEN COATING & CONVERTING Product highlights 3 Clearly arranged presentation of the distortion characteristic 3 Menu-controlled service settings 3 Two-part combination image for simultaneous monitoring of two scanner units 3 Distortion default as percentage, adjustable (left: skew, right: bow) 3 Direction of product flow and momentary characteristic of the weft 3 Current web distortion as percentage (left: skew, right: bow) 3 Trend diagrams (top: skew, bottom: bow) freely scalable 3 Image scale of histogram, selectable, e.g. -5...0...+5 (top: skew, bottom: bow) 3 Password protection –...

Main page for sensor selection with integrated process control (option) 3 User interface FMC full version 3 User interface FMC Base version 1. Title line: General information (including alarm bar) 2. Display area: Selectable screen pages (display forms) 3. Horizontal block: Operating buttons for basic functions and submenu 4. Selection block: Navigation within the operating software 5. Vertical block: Operating buttons for the menu selection Trend display of residual moisture when featuring integrated process control (example) The user interface consists of five areas: Orthomat simulation...

The Orthopac RVMC is the universally employable straightening system from Mahlo for the correction of web distortions for nearly all applications. It is precisely designed for the demands of the textile industry and can be adapted to the individual requirement through its modular make-up. The user obtains a sophisticated straightening system with maximum possible customer benefit with respect to versatility and operating convenience. Through interaction with the suitable scanning system web distortions are corrected exactly and without delay. All this is marked by simple operation of the...

Principle of operation The strength of the Orthopac RVMC is the combination of high straightening accuracy and progressive straightening speed. The compact straightening module is equipped with 3 skew and 2 bow rollers as standard. The product flow concept is optimized for the system to quickly respond to changing web distortions. The stepless positioning drive for the straightening rollers with the unique hydraulic unit combines the shortest positioning times with maximum precision and minimal maintenance. Two independent hydraulic units, each with servomotor and reversing pump with...