Method for controlling yarn tension produced during starting weaving machine
A technology of yarn tension and control method, which is applied in the detection and control of motor following torque, and the field of yarn tension control when loom is started, can solve the problems of time consumption, time required, and the yarn tension cannot reach the preset value, etc. To achieve the effect of ensuring quality and avoiding disturbance
Inactive Publication Date: 2012-12-05
DONGHUA UNIV
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[0007] Its shortcomings are mainly reflected in two aspects: First, when the loom is powered on and started, after the motor on the take-up shaft of the loom operates, its torque needs to be transmitted to the motor on the let-off shaft through the yarn tension detection and control device. Motor, the transmission process takes time; in addition, because the yarn itself is an elastic body, it also needs to consume corresponding time, so in actual operation, the following phenomenon is very easy to occur: that is, the signal for controlling the operation of the warp let-off shaft motor does not arrive. The motor on the warp let-off shaft has started to run, causing the motor on the warp let-off shaft to not follow the motor on the take-up shaft well, so that the tension on the yarn cannot meet the preset requirements, thereby affecting the product quality; When the yarn on the loom needs to provide a large static moment, since the motor is the driving device rather than the braking device, the let-off and take-up devices on the traditional loom cannot meet the requirements
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[0022] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0023] The invention relates to a yarn tension control method when a loom is started. The method is to add a small torque brake to the warp let-off shaft of a traditional loom. When the loom is started, its torque will not It reaches the rated value instantly, but there is a transition process of slow rise. When the tension on the yarn reaches the pre-tension, the motor on the take-up shaft will not work immediately because the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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The invention relates to a method for controlling the yarn tension produced during starting a weaving machine, and the method is characterized in that a small torque brake is additionally arranged on the yarn-feed beam of the traditional weaving machine; and when the weaving machine is started, the small torque brake brakes the yarn-feed beam, and a yarn tension detection and control device calculates the required torque of the yarn-feed beam according to a received torque of a take-up beam, and sends control signals to a yarn-feed beam motor and the brake, so that the yarn-feed beam motor and the brake are ensured to operate according to the control signals. By utilizing the method provided by the invention, the follow between the yarn-feed beam motor and a take-up beam motor is realized, and the requirements for larger static torque of yarns are met.
Description
technical field [0001] The invention relates to the detection and control technology of motor following torque in the field of loom control, in particular to a yarn tension control method when the loom is started. Background technique [0002] In the weaving industry, in order to ensure the uniform balance of the produced fabrics, the fluctuation of the yarn tension must be controlled within the specified range. If the yarn tension is too high, it is easy to cause accidental drafting, which will damage the yarn, cause fine details, and increase the number of broken ends; Generates the smoothness of the cloth. However, the traditional loom structure, in order to meet the operation of the loom in different occasions, has a variety of yarn tension detection methods and corresponding control devices, and no unified industry standard has been formed. In addition, the current research and design of the yarn tension detection and control device only detects the yarn tension durin...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): B65H59/38
Inventor 陈家新施广军修榕
Owner DONGHUA UNIV