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Motor control device for driving sliding frame of flat-knitting machine

A technology of triangular seat carriage and control device, which is applied in the direction of AC motor control, control system, optimized efficiency control at low load, etc., can solve problems such as shortened service life, achieve the effect of reducing load and avoiding deterioration of appearance

Inactive Publication Date: 2012-05-30
SHIMA SEIKI MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the load monitoring of the servo motor in this prior art is not for protection against shortened service life of the servo motor itself, but for protection of the grinding wheel driven by the servo motor

Method used

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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  • Motor control device for driving sliding frame of flat-knitting machine
  • Motor control device for driving sliding frame of flat-knitting machine
  • Motor control device for driving sliding frame of flat-knitting machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] figure 1 A schematic appearance configuration of a flat knitting machine 1 according to an embodiment of the present invention is shown. The flat knitting machine 1 has needle beds 2 at the front and back, and the needle beds 3 in the middle face each other. A carriage 4 is provided on the front and rear needle beds 2 respectively, and the carriage 4 is connected to the carriage 4 by a bridge 5 at the tooth gap 3 . The carriage 4 is driven to reciprocate in the left-right direction in the figure, that is, the longitudinal direction of the needle bed 2 . A plurality of yarn guide rails 6 are erected above the crest 3 . A yarn guide (not shown) serving as a yarn supplying member for supplying the knitting yarn to the needle bed 3 is movably supported on the yarn guide rail 6 . The bridge portion 5 is straddled on the yarn guide rail 6, and can be driven by selecting one yarn guide among a plurality of yarn guides. When performing plating knitting, etc., sometimes a pl...

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PUM

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Abstract

The invention provides a control device of an electric motor of the transverse machine tripod base sliding frame which can avoid reduced waving efficiency and the short service life caused by the heat even using the cheap electric motor with the load balance rating value by the usual motor under the maximum load weaving situation. In the stated time period, a torque monitor (14) monitors the loadtorque as the man electric motor (10). A temperature deducing circuit (16) calculates the temperature of the electric motor based on the average load torque of the monitoring result of the torque monitor (14). A protecting circuit (15) compares the virtual temperature to the predetermined allowed temperature. When the virtual temperature excesses the allowed temperature, the invention reduces thespeed coefficient to 0.9 for the speed limitation. Under the condition that the virtual temperature is restored, the invention restores the speed coefficient to the original value 1.0.

Description

technical field [0001] The present invention relates to a control device for a carriage driving motor used in a flat knitting machine for driving a carriage that moves knitting needles while moving along a needle bed. Background technique [0002] At present, for example, the general flat knitting machine technology described in the prior art column of Patent Document 1, the carriage with the knitting cam for knitting can reciprocate along the needle bed on which the knitting needles are arranged. . Such a carriage driving motor uses a servo motor, called a main motor, as a driving force for the knitting operation of the knitted fabric. [0003] On the flat knitting machine, the rated value of the motor for driving the carriage is selected so that it has a sufficient output for the knitting pattern that uses the knitting needles at the maximum load. Motors are generally rated continuously for continuous use and intermittently for short periods of time. When the motor is e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04B15/36H02P23/00H02P23/02D04B15/96D04B15/99
Inventor 南方胜次
Owner SHIMA SEIKI MFG LTD
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