VS Sewing Machine: November 2020

Monday, November 30, 2020

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Industrie 4.0, proposed by DFKI , is defined as the 4th industrial revolution based on Internet-of-Things (IoT) , cyber-physical systems (CPS) , and Internet-of-Services (IoS) . One of the characteristics of Industrie 4.0 is that it includes smart factories capable of generating customized products for customers. One of the important issues to implement a smart factory is to complete and deliver customized products to customers within specified time. For this, we need an efficient scheduling algorithm.

It becomes more and more sophisticated work to validate a production schedule in factories. Simulation is a tool for validating a production schedule and changing it if needed. For using simulation, we need appropriate simulation models. In this paper, we propose a sewing machine model for simulating sewing process. The proposed sewing machine model includes sensing, sewing, forwarding and control functions as submodels. Also, we propose a modeling tool that includes the proposed model. The proposed modeling tool manages a model library that can be continuously extended for sewing process simulation. Further, it can automatically generate and build source codes for simulation models. Therefore, users can easily develop their own models and simulate them

A set of sewing stations are aligned along the sides of alarge table where the pieces to be sewn are laid out. Each ofthe stations moves in parallel along the table over a pair ofsteel rails. Each sewing station is operated and propelled by ahuman collaborator. This production method presents severalproblems. One of them is the dependence of the seams spacingwith the speed of the sewing station which, on the other hand,is strongly dependent on the human operator. It is desirablethat the station linear speed to be synchronized with the sewingmachine operation speed. This will lead to a more uniform,and operator independent, seams juki sewing machine price in chennai

In the course of the following sections, the various decisionstaken to circumvent the problem of seam spacing will bedocumented. Additional issues, like the improvement of thesewing station ergonomics ,needle issues andseams accuracy , are outside the scope of the currentarticle. Section II describes the mechanical, electrical andinstrumentation solutions that will be transferred to the currentindustrial sewing stations. Section III presents the mathemat-ical model of the actual prototype.

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This paper presents a permanent magnet synchronous motor (PMSM) servo drive system for high speed flat industrial sewing machine. In order to satisfy the special function of sewing machine, several approaches are applied in this servo system: Using voltage feed-forward decoupling control in current loop to improve speed and position control performance; Variable gain control is adopted in system to compensate incomplete decoupling caused by disturbance and inaccuracy of parameter; PMSM used in system is specially designed with concentrated winding and lean charge magnetism barrel-drain rotor, which can effectually improve motor operating and reduce torque harmonics. The experimental curves of sewing procedure show that: the speed feedback can accurately track speed reference under different sewing conditions, which proof the servo control system meet purpose of industrial sewing machines well.

The “Factoryplay” company, which operates in the Bragançaindustrial area, in the northeast region of Portugal, designsand produces inflatable structures for recreational activities andtheme parks. Its economical activity extends well beyond theborders of the national territory. As a matter of fact, nowadays“Factoryplay” is a company whose large array of certifiedproducts are available in several countries

As a company that is currently expanding, it requires thereplacement and updating of many of its production paradigmsin order to become more efficient. Namely, regarding the waythe inflatables sewing process occurs.

The robotic handling of non-rigid objects, such as fabrics, is a very complicated problem since it is very difficult to model and predict the behavior of the fabric. The non-linearity, the large deformations and the very low bending resistance of the fabrics increase the complexity and difficulty of the robotic handling. In this paper, the robotized sewing is examined, where the fabric must be held taut and unwrinkled. Actually, a constant tensional force, which must be applied to the fabric throughout the feeding to the sewing machine, affects the seam’s quality to a great extent . Gershon clearly justified the need for force feedback control, in order to obtain a fabric’s constant tensional force in the sewing task. jack sewing machine price in chennai

A set of sewing stations are aligned along the sides of alarge table where the pieces to be sewn are laid out. Each ofthe stations moves in parallel along the table over a pair ofsteel rails. Each sewing station is operated and propelled by ahuman collaborator. This production method presents severalproblems. One of them is the dependence of the seams spacingwith the speed of the sewing station which, on the other hand,is strongly dependent on the human operator. It is desirablethat the station linear speed to be synchronized with the sewingmachine operation speed. This will lead to a more uniform,and operator independent, seams

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This work focuses on photovoltaic array fed sewing machine. Main focus is on utilizing non conventional energy resources i.e. solar energy because now-a-days the entire world is facing crises of energy. System consists of an arrangement of several components, including solar panels to absorb and convert sunlight to electricity. In this research work a photovoltaic array is used to run a motor i.e. dc motor that drives the sewing machine. Dc motor will be fed by charge controller and the duty cycle of charge controller is controlled by using MPPT (P&O) algorithm. The simulink model of the research work is done using MATLAB software.

During the actual operation of the expert system for motor selection, some kinds of functions must be showed, such as outputting the following motor parameters according to the input data: the motor model, the protection and structure form, the rated power and cooling ventilation, the rated speed. Of course, these contents can be outputted individually or in combination. And finally the users determine the required motor according to these dates. System functions as follows: 1) Motor selection function: The users input the data according to various motor parameters into the system. The system chooses the relative rules based on the data from the rule base. Then it uses the rules to reason the results. At last the results of the rule inference are given and displayed to the users.

2) Add, Modify and Delete the rules: The user can add some rules through the system. In practical use, the users may find that there are some discrepancies between the rules and the actual situations. So adding, modifying, or deleting the rules according to the actual situations can expand the system and provide better service for the users. jack sewing machine price in chennai

The precise mathematical model of the object will be not required if fuzzy PID control algorithm is adopted. Instead, the fuzzy control rules, which would be used to determine the control volume, are built mainly based on the experience of the developers and experts. However, if the developer is not enough familiar with ISM, the application of fuzzy control will cost huge time on making the fuzzy control rules for ISM’s motor servo system, and the fuzzy control rules may be half-baked or even incorrect. Consequently, the effect of fuzzy control will be much worse than classic PID control [9]. An algorithm is needed when the developers just have a few knowledge of the ISM, which will spend much less time to realize the motor control.

The differentiator in classic PID control improves the system’s fast response characteristic, but it amplifies the external disturbance, which has a bad impact on the reliability of the system. Hence, the differentiator is deleted in the application of increment-PI control considering the complex industry environment for the ISM’s well working. This method is simple and practical, but the dynamic response, speed smooth and reliability of the system needs improving if this method is applied in ISM .

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Presently, classic PID control theory is mainly adopted in the research on speed control of the motor servo system of ISM. Based on the classic PID control theory, increment-PI control algorithm or fuzzy PID control theory are also adopted in this research field

The system function is the selection of small and medium electric motors. When the users input the certain known motor parameters, one or more motor models selected in the system will be showed. This kind of problem that has data-driven feature is suitable for the rule based language with forward inference. The typical case is reading in one group of motor parameter the each program cycle and deducting until obtaining all the possible conclusions according to input data. jack sewing machine dealers in chennai

The unification of data is a very important step in this system. That means at the stage of setting up the knowledgebase, some motor parameters have been systematically standardized and can be recognized by the system. Taking the speed control for example, each user may have their specific requirements of speed. To be exhaustive, some fuzzy selection functions will be lost and the user's choice will be limited. Therefore this paper will categorize the speed range to high, low and none ((speed range high), (speed range low), (speed range zero)).This not only facilitates the establishment of the system, but also makes the selection of speed easier. When the users choose the speed, they don’t need to consider the actual data and all they need to know is the scope of the speed range. After the data standardization is finished, the rule is needed to control the data. The rule verifies the match degree of the input data and the knowledgebase by pattern matching .

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Friday, November 27, 2020

gemsy sewing machine price in chennai - VS SewingMachine

Gemsy sewing machine price in chennai - VS SewingMachine

The speed of the new product development in sewing machine industry is slow. Due to the influence of the general situation of sewing industry, time and funds, combined with the uncertainty of the development result, the enterprises find hard to make decision on how and when to develop their new products or improve old ones, though they have eager and strong desire. To meet the very demands, the article introduces the QFD, sets up the house of quality, and ensures the best group of the improvement measures and contribution under the restriction of the cost.

There are a variety of stabilizers available with a variety of purposes and uses. Some are used below the fabric you are embroidering; others are used on the top; napped fabric, such as terry cloth, needs a stabilizer on top to hold the nap down and prevent the loops of fabric from poking through the embroidery design. Water Soluble and Heat Away are commonly used as topside stabilizers. Water Soluble will dissolve in water, while Heat Away turns to ash with the heat of an iron. Either one will leave no trace of the stabilizer but will hold the fabric down to get the job done. jack f4 sewing machine price in chennai

Number and styles of stitches offered: For beginner sewers, you will need just two stitches: Straight and zig zag. More experienced sewers should look for a wider variety. For example, if you love embroidery or quilting, make sure you look for machines that provide those capabilities: If your machine doesn’t offer embroidery or free motion sewing, those features cannot be added later on. Additionally, make sure the machine has the capability to adjust stitch length, zig zag width, and tension so you have more control over your sewing.
Included accessories: Most machines include a bobbin and a presser foot, but some include much more. For the most bang for your buck, check if the machine includes a zipper foot, buttonhole foot, embroidery foot, removable extended work table, and an area for storage.
Extra features: Some machines include specific capabilities that can make sewing a whole lot easier like a thread cutter, automatic needle threader, lights, free arm, blind stitching, and buttonhole capabilities. Once you have them, sometimes you cannot imagine sewing on a machine without them. jack sewing machine dealers in chennai
Frame construction: For longevity of the machine, you want to look for a metal frame option. Plastic frames are common, but can deteriorate quicker and be more difficult to repair.

Solemnly aim of this paper is to present the model design for sewing machine which ultimately helps in energy saving by turning off the redundant tube lights. As per our subject industry, master textile, there are four hundred sewing machines present there and hundreds of stations control through single breaker. Controlling the station light can save tremendous amount of energy because most of the stations used are in idle condition and station lights are turned ON with no reason.

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A scheme has been developed to reduce the no-load losses of the industrial sewing machine motors used in Ready Made Garments (RMG) industries. The switching arrangement of the machine is such that the supply voltage of the motor is partially dropped across a reactive device which is a capacitor connected in series with the motor while the motor is running at no-load. This reduced voltage to the motor reduces the no-load loss significantly. During load condition the switching mechanism of the motor replaces the reactive component by a wire connection and allows full power to the load. The validity of this mechanism is verified by simulation programs and results are tabulated with proper comparison. It is evident that the use of this motor controller reduces no-load loss of the sewing machines substantially and under load condition the controller improves efficiency of the machines. As the loading increase, the efficiency of the machine also increases.

This isn’t a sewing and embroidery machine for those who just want something to play about with, although it gives you tonnes of options. The Craft 12000 is about as close as you can get to a professional embroidery and sewing machine for at-home use. Because of the 4 MB of memory, there is plenty of space for your new designs when uploading them via the USB but you might not need to for a while thanks to the 338 built-in designs. With all the conveniences of regular machines such as an automatic needle threader and a thread cutter it goes many steps further by offering complete speed control with the embroidery and sewing functions.gemsy sewing machine price in chennai

The touchscreen has plenty of room and is easy to navigate but you might want to make life even easier. This is possible because it can be connected to your laptop or PC and you can use the screen to choose between the options. With 425 built-in stitches and a free arm, so you can sew cylinders, it has lots for the sewer to enjoy, not to mention it comes with a huge 43 presser feet. With 4 embroidery hoops and a reputation for being one of the most advanced sewing and embroidery machines available, it is an option that everyone should consider if their budget stretches. jack f4 sewing machine price in chennai

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Among the processes for making final products using fibers, the final process can be called a sewing process. The sewing process generally corresponds to the process that requires the most manpower in the production of textile products. The cost of sewing has gradually increased due to the recent rise in labor costs. The automation of the sewing process and the smart factory are expected to be carried out along with the fourth industrial revolution. In order to make the sewing factories smart, it is essential to apply smart sensing technology to the sewing machines. Also, sewing Process In order to grasp real-time situation, a system to monitor the status of each machine is needed. This study can be regarded as a part of technology development for automation and unmanned sewing process for final CPS(cyber-physical system) implementation. Three techniques have been developed in the sewing machine modification technology to assist the smarting and sewing process of the sewing machine. Three kinds of developed technology are a bobbin remaining amount detecting technique, stitch length control, and monitoring techniques. As a result of step-by-step technology development to realize CPS finally, it is a partial technology development of automation through some modification of sewing machine. The developed technology is expected to be used as a technology for future smart sewing automation plant construction.

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To address some of the problems stated previously, in particular the quick response to small production orders, several new production organization methods have been devised. These are based on higher flexibility and interchangeability of the operators, smaller production units and batch sizes, and higher mobility of the production equipment. But the simple reorganization of production cannot address all issues: the variables related to the production process itself are still not controlled. Set-up of the machines is empirical and thus inaccurate and time-consuming. Initial set-up is maintained during operation regardless changing sewing conditions. Quality is assessed by visual inspection, often causing defective parts to pass unnoticed or to be detected very late

The approach proposed in this work relies on the evaluation and analysis of the relevant sewing parameters and their relation to quality problems and machine set-up variables. This integrated approach has enabled the development of methods to automatically detect sewing defects and seam quality, and to propose control methods for certain machine adjustments. Best sewing machine showroom

The objectives are therefore twofold. On one hand, they are directed to the development of monitoring and control devices for the machines, enabling them to adapt to variable sewing conditions and detect defective sewing conditions automatically. On the other hand, they aim at the establishment of testing methods and equipment for pre-production analysis of fabric “sewability”

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The industrial manufacturing of sewn products has always been one of the critical processes of the textile chain concerning quality assurance. Assuring the appropriate set-up and operation of all the machines, and thus the final seam quality, is a very complex task. Traditionally, this task is accomplished by empirical methods, with machine setting and quality control relying on the skills of operators and technicians. In this work, an approach to a more knowledge-based and integrated process planning and control is presented. A system was developed to measure and analyze the most important mechanical effects occurring during high-speed sewing. A general overview over this development is given in this paper.

Textile stream smart factory CPS implementation can only be done by linking together the ordering system, design automation system, product information management system, production information integration system and production equipment automation. interlinkage of high-throughput, high-productivity production systems that minimize plant-to-plant collaboration and prototype production to accommodate small-volume and multi-stream requirements between streams, and can be instantly produced on demand. Best sewing machine showroom

The textile industry is one of the major and largest manufacturing industries in Pakistan. Pakistan is the 8th largest exporter of textile commodities in Asia. This sector contributes 8.5% to the GDP . In addition, the sector employs about 45% of the total labor force in the country, which includes the 38% of the manufacturing workers . Moreover, Pakistan is the 4th largest producer of cotton with the third largest spinning capacity in Asia after China and India and contributes 5% to the global spinning capacity . At present, there are 1,221 ginning units, 442 spinning units as well as 124 large spinning units and 425 small units which produce textile . Master textile is one of the foremost and leading textile manufacturers, based in Lahore, Pakistan that is engaged in the export of quality products such as yarns, garments and fibers. They established a name of credentials owing to the project commitments, working speed, quality practices and the overall approach of the company .Best sewing machine shops

he design proposed in the paper has two major subparts. The first part involves controlling the station light by knowing the presence of workers on the machine which shown their working status and performance. The second part involves sending data towards manager room and then extracting the data into the excel format. For achieving this target, various different sensing mechanisms have been tried, but most of them are not working efficiently and properly, which include Passive infrared (PIR) sensor, R.F. sensor, ultrasonic sensor etc. When other conventional sensors were failed to deliver the results then current sensing mechanism is designed which works on the sewing machine’s working status through using flux of the machine. On the other hand, monitoring and sending data towards the manager room is the real challenge because there were four hundred machines need to synchronize in addition the data need to send wirelessly. For synchronizing the machine there is thirty-one masters is made, each master connected to thirty slaves and each master link to single master, which communicate all the data towards the manager. Although the data can be transmitted through various ways such as ZigBee device, wireless super regeneration transmission module, etc., but super regenerative wireless transmission module is opted for transmission of data.

Thursday, November 26, 2020

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The design of a moderate gain embroidered antenna using the resonant cavity concept is presented. The patch as the main radiator and the partially reflective surface (PRS) structure as the superstrate are realized using an industrial embroidery machine. The PRS consists of periodic cross-slots (9 × 9 unit cells) in order to have a durable embroidered structure. The groundplane is made of a conductive woven fabric. The fabricated antenna has a relatively broad 1 dB-gain-bandwidth (10%) and a directive pattern (3 dB beam-width of 40° at the center frequency). Despite the higher losses in the conductive thread due to the resonant cavity effect, this antenna has a maximum realized gain of 6.8 dBi, which is typically 3 to 6 dB more than other embroidered single patch antennas.

Sewing Machines are arranged dependent on their usefulness, and they have likewise been ordered relying upon their highlights like sewing, knitting and weaving.

Based on stitch filling of patterns of embroidery machines, we divide images into blocks according to colours, i.e. quantify the three components of H, S and I under the HIS coloured model. There are two sorts of quantification methods at present: uniformly-spaced quantification and non-uniformly-spaced quantification. Uniformly-spaced quantification makes uniformly- spaced partition of each component in its own domain. For example, tone H (0-360) can be divided equally into 6 portions and every 60 consist of one portion which can be divided into 6 categories, i.e. six-dimensional characteristic quantity. Because people have uneven perception of tone when seeing them, capturing characteristic quantity by non-uniformly-spaced quantification is a common method.

The spark and crackle typically associated with new consumer electronics were subdued during 1975. Though the spotlight played briefly on video disks, little hardware is yet available — excitement dissipated quickly, awaiting the “big push” still scheduled for late this year when MCA/Philips and RCA start marketing players in the United States. Calculators were personal, portabl, and plentiful this past year, with new entries by Hewlett-Packard and Texas Instruments leading the pack. And jewelers, accustomed to the familiar tick of mechanical timepieces, had to adjust to the silence of the digital watch-which, as prices tumble, is showing up in chain store windows as well as posh display cases. Here, the technology tug-of-war revolves around readouts: light-emitting diodes (LEDs) vs. liquid crystal displays (LCDs).

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Sewing Machines are arranged dependent on their usefulness, and they have likewise been ordered relying upon their highlights like sewing, knitting and weaving.

While operating a machine, people tend to remain in a stationary location relative to it. Both the head motion and gaze concentrate on it and are localized compared to during walking or a searching situation.There are a cer-tain number of spatial areasthat people often pay attention, touch, or manipulate. Most of themare im-portant objects or interfaces such as buttons, levers, handles, which need to be touched for accomplishing a task.Hereafter, we consider such a spatial area as a “hotspot”. The actions of touching or manipulating hotspots and their orders can thus be considered the es-sence of the task.But there are some difficulties and challenges: hotspots on machines canbe sometimes small areas that are easily occluded by hands or human body; theymay be close to each other; the actions to hotspots can be complicated

This leads to a new applicationof computer vision;automatic hotspotdetection and action classification orrecognition.Detected hotspots and action contribute to summarize or analyze the task of machine operation

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