Electromagnetic clutch expansion sleeve and coupling composite fabric information

Electromagnetic clutch is used in the transmission system of rapier looms, air-jet looms and water-jet looms, which can realize the rapid and reliable combination, separation, power transmission, braking and positioning of active components and passive components. The clutch (picture below) is composed of four main components: brake yoke assembly 1, clutch yoke assembly 4, armature assembly 2, and rotor assembly 3.
The working principle of the clutch is that when the clutch yoke is energized and the brake yoke is deenergized, the clutch yoke generates The electromagnetic force attracts the armature through the rotor, causing a certain friction between the rotor friction plate and the armature, achieving a reliable combination of the active part and the passive part, transmitting power, and making the loom run. When the brake is energized and the clutch is de-energized, the brake yoke generates electromagnetic force and the electromagnetic potential of the clutch yoke disappears. The armature is separated from the clutch yoke and rotor by means of the elastic force of the spring leaf. The brake yoke attracts the armature, causing the armature and the brake yoke to engage. Friction plates generate friction. The clutch is a magnetic yoke that is energized to generate electromagnetic force to attract the armature. The armature and the friction plate generate friction to transmit power. Therefore, the gap between the armature and the rotor friction plate must be adjusted between 0.3 and 0.5mm. You can use the gap adjustment plate 5 (Figure 18- 1) Adjust to the best position. 1. Single-plate electromagnetic clutch The electromagnetic clutch in shuttleless looms is a special clutch within the range of single-plate electromagnetic clutch products. Its products are mainly divided into combination clutches, electromagnetic brakes, electromagnetic clutches and tooth clutches. The specifications, parameters, performance, installation dimensions, braking torque (dynamic torque), transmission torque (static torque) and other performance indicators of this type of product are all based on meeting the needs of new looms. Produced by famous professional clutch manufacturers in Germany, Japan, and the United States, they have successfully extended the effective structure theory of multi-plate electromagnetic clutches to single-plate electromagnetic clutches dedicated to looms, improved the traditional structure of single-plate electromagnetic clutches, and perfected the clutches dedicated to looms. Structural performance greatly improves the performance of this product. For example, the armature structure has developed from a single magnetic circuit and a single armature to a dual magnetic circuit and a single armature, and a dual magnetic circuit and a dual armature, thereby reducing the weight of the armature. On the basis of not changing the original structural dimensions of the clutch or brake, the torque of this type of product can be doubled, adapting to the increased speed of shuttleless looms, and promoting the development and efficiency of looms. Compared with general-purpose clutches, this type of product is not in series, is updated quickly, and will be eliminated with the update of looms. The realization of high speed, high efficiency and high reliability of modern new shuttleless looms is closely related to the development of special clutches for looms, which has become a new development category of single-chip electromagnetic clutches. Some special clutches for looms are general-purpose clutch variants, while others are specially designed for looms. No matter what type of product, they must meet the requirements of the loom for installation, debugging, maintenance, high transmission torque and high braking torque, and realize the characteristics of fast starting and fast braking of the shuttleless loom. Single-plate electromagnetic clutches and brakes, combined clutches and electrostatic actuators are all dry-type single-plate without slip rings. They have the characteristics of compact structure, fast response, long life and reliable use. They have been widely used in textile machinery products and device. The electromagnetic clutches and brakes used in these machines and devices are mainly used as automation actuators. In order to ensure the service life of clutches and brakes, the friction plates of electromagnetic clutches and brakes, combined clutches, power-off brakes and other products must use high-performance, high-temperature-resistant non-asbestos-based friction materials. 2. Classification of electromagnetic clutches (1) Electromagnetic clutches are divided into DLD5-40 type, DLD6-160A type, DLD6-160/F type, DLD6-160/E type, DLDF-350 type and DLDF-550 type. (2) Electromagnetic brakes are divided into DZD5-80/A type, DZD5-160 type, DZD5-160/A type, DZD5-160/C type, DZD5-160/D type, DZD5-160/F type, DZD5-160A Type, DZDF-350, DZDF-550, DZDF-320/C, DZDF-320/D, DZDF-320/E, DZD5-320/X and DZD5-250/B. (3) Combined clutches are divided into DLZF-350Ⅰ type, DLZF-350Ⅱ; 450Ⅰ; 500Ⅰ type, DLZF-400 type, DLZF-450Ⅱ type, DLZF-500Ⅱ type, DLZF-500Ⅲ type, DLZF-600 type, DLZF-900 type , DLZF-900A type, DLZF-1000 type, DLZF-500ⅡA type, DLZF-850 type, DLZF-350I type, DLZF-350IV type, DLZF-1100 type and DLZF-1100A type. (4) Dog clutches are divided into DLFY-200 type, DLFY-900 type, DLFY-566 slow speed type, DLFY-566 weft-finding type and DLZF-500 type, etc. 3. Teeth electromagnetic clutch Teeth electromagnetic clutch is developed on the basis of tooth mechanical clutch. The tooth shape part is basically the same as that of tooth mechanical clutch, including trapezoid, triangle, symmetrical teeth, asymmetric teeth and other forms. According to the tooth shape, it can be divided into two categories: fine teeth and coarse teeth. According to the action, it can be divided into positioning teeth (unequal spacing teeth) and non-positioning teeth (symmetrical and asymmetric equidistant teeth), power-on and power-off types. Like ordinary electromagnetic clutches, early jaw electromagnetic clutches were powered by slip ring brushes. Modern new jaw electromagnetic clutches all adopt the basic structure of a single-plate electromagnetic clutch, that is, the armature and rotor are replaced by end toothed discs, and the yoke is fixed The non-rotating power supply is convenient and improves the reliability of the product. The action of the tooth-engaged power-off positioning clutch is the same as that of the tooth-engaged power-off clutch, that is, it disengages when powered on and combines when powered off (de-energized). However, the difference is that the end teeth are unequal teeth during combination, which ensures that the relative position is correct each time the combination is performed. constantThe drum-shaped gear coupling and the middle inner gear sleeve are made of organic materials with high elasticity, high strength, oil resistance, corrosion resistance and impact resistance. In order to meet the requirements of high speed, low inertia and no gap in modern mechanical transmission, diaphragm couplings and shafts are connected using pairs of expansion rings to achieve keyless connection. The diaphragm coupling using this structure is more suitable for use in servo drive system transmission machinery to control the transmission gap, reduce the dead zone of the servo system, and improve the positioning accuracy and servo performance of the mechanical transmission. The expansion coupling sleeve is a new type of coupling piece that can achieve keyless coupling. The product structure of the new coupling has been relatively complete, and it is combined with other transmission parts such as safety clutches to form new transmission parts products. There are many types of couplings, with more varieties and specifications. Currently, the most commonly used ones are diaphragm couplings, plum blossom couplings, drum gear couplings, cross-shaft universal couplings and expansion sleeve couplings.
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