Shanghai Textile Machinery Factory, formerly known as Shanghai No.1 Machinery Factory, has long been a key player in the textile machinery industry. The factory specializes in producing a wide range of pre-spinning equipment, including draw frames, strip machines, combing machines, and other semi-combed wool and spinning machinery. Over the years, it has continuously evolved to meet the changing demands of the textile sector.
Recently, the factory introduced a groundbreaking product: the CJ40S digital servo multi-axis drive cotton comber, independently developed by the Shanghai Textile Machinery General Factory. This advanced machine has already been successfully tested at a field base and has drawn significant attention from domestic and international experts and industry peers. As part of the Pacific Electromechanical Group, this innovation marks a major milestone in the company's journey toward greater automation and digitalization.
Traditional combing machines on the market typically rely on a main motor to drive mechanical movements, with complex systems such as cam four-link mechanisms or multi-link gear trains controlling the motion of components like the detaching roller. These systems are not only complicated but also limited in their ability to adapt to different fiber types or yarn conditions. The movement between the nipper plate and the detaching roller often lacks precision, leading to inefficiencies and quality issues.
Under the leadership of the Pacific Electromechanical Group, the Shanghai Textile Machinery General Factory has spent nearly five decades researching and improving cotton combing technology. Through collaboration with universities and spinning enterprises, the team has embraced cutting-edge technologies such as computer systems, digitization, and networking. Their efforts have resulted in the development of a new generation of high-automation, intelligent, and digitally-driven cotton comber.
This innovative model replaces traditional mechanical cam and planetary wheel systems with electronic cam functions using servo controllers and motors. The servo motor directly drives the high-speed operation of the separation roller, offering high precision, no wear, and the ability to store thousands of points and multiple curves in the controller for easy switching. The system includes a PCC controller, man-machine interface, mainframe frequency converter, one servo controller, two closed-loop inverters, and encoders, enabling four-axis synchronous operation with accurate tracking and stable start/stop performance.
The new model also integrates industrial bus control technology, allowing fast data exchange between control and drive devices. This makes it possible for operators to quickly adjust the separation curve and speed ratio between master and slave axes through the user interface—often within just a few seconds. Additionally, an Ethernet interface supports centralized control and management of the entire production line.
The servo multi-axis drive cotton comber represents the culmination of the latest design concepts from the Shanghai Textile Machinery General Factory. It features a simplified structure, low energy consumption, and produces even cotton web without broken edges or netting. This not only reduces raw material waste but also improves product quality, increasing CV% by approximately 20%. The machine can effectively combine different lengths of cotton fibers, helping spinning enterprises respond more swiftly to market demands.
Currently, the utility model patent has been approved, and the invention patent has been announced. The product has also been submitted as part of the national “Eleventh Five-Year Plan†863 Program Major Project Proposal, highlighting its significance in the industry’s digital transformation.
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