The new generation of digital servo multi-axis drive cotton comber, the CJ40S, developed independently by Shanghai Textile Machinery General Factory, has been successfully tested in real-world environments at the trial base. This breakthrough has captured significant attention from both domestic and international industry experts and partners, marking a key highlight in the product lineup of the Pacific Electromechanical Group. The machine stands out for its advanced digitalization, featuring a unique electronic cam system, multi-axis synchronization, and bus control technology, which place it at the forefront of modern textile automation.
Currently, most combing machines on the market are driven by a main motor that relies on mechanical systems to operate various components. These systems often use complex mechanisms such as cam linkages combined with differential gear trains, making them difficult to adjust. The motion curves of the separating roller and the effective output length cannot be easily modified based on different yarn types or fiber conditions. Additionally, the interaction between the nipper plate and the separating roller is not always optimal due to variations in fiber properties and gear ratios.
Under the leadership of the Pacific Electromechanical Group, Shanghai Textile Machinery General Factory has spent nearly half a century refining its cotton combing technology through continuous market research and collaboration with universities and spinning enterprises. By embracing computer technology, digitization, and networking, the company has successfully developed a next-generation servo multi-axis drive cotton comber that is highly automated, intelligent, and digitalized.
This new model replaces traditional mechanical cam and planetary gear systems with high-precision servo controllers and motors, enabling direct and efficient operation of the separating roller at high speeds. The virtual electronic cam offers high accuracy, no wear, and can store thousands of data points per cycle, allowing multiple pre-set motion curves to be switched quickly. Through the use of a PCC controller, human-machine interface, main frequency converter, one servo controller, two closed-loop inverters, and encoders, the machine achieves four-axis synchronous operation with precise tracking and stable start/stop performance.
Additionally, the CJ40S incorporates industrial bus control technology, significantly improving data exchange speed between the control and drive units. This allows even untrained operators to adjust the separation curve and modify the speed ratio between master and slave axes within seconds via the user interface. The device also features an Ethernet interface for seamless communication with higher-level systems, supporting centralized production line management.
The new servo multi-axis drive cotton comber represents the latest innovation from Shanghai Textile Machinery General Factory, combining a simplified structure with low energy consumption. It produces an even cotton web without broken edges or gaps, reducing raw material waste and improving product quality—increasing CV% by approximately 20%. Its ability to handle different fiber lengths enables cotton spinning companies to respond more swiftly to market demands.
The product has already received a utility model patent and an invention patent announcement. It has also been submitted to the national "Eleventh Five-Year Plan" 863 Program Major Project Proposal, signaling its potential to shape the future of textile automation.
Alloy Steel Pipe
Alloy pipe is a kind of seamless Steel Pipe, its performance is much higher than that of general seamless steel pipe, because this type of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance performance is much better than other Steel pipe, so the alloy pipe is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.
Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%.Most commonly, the phrase "alloy steel" refers to low-alloy steels.
Strictly speaking, every steel is an alloy, but not all steels are called "alloy steels". The simplest steels are iron (Fe) alloyed with carbon (C) (about 0.1% to 1%, depending on type). However, the term "alloy steel" is the standard term referring to steels with other alloying elements added deliberately in addition to the carbon. Common alloyants include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common alloyants include aluminum, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead and zirconium.
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