Automatic regulating device for roller traction force of flat knitting machine

Abstract

The invention discloses an automatic regulating device for roller traction force of a flat knitting machine. The automatic regulating device for the roller traction force of the flat knitting machineis characterized in that the automatic regulating device comprises a flat knitting machine frame and a roller mechanism which is used for towing fabric; the flat knitting machine frame is opened withan accommodating cavity for accommodating the roller mechanism, and the flat knitting machine frame also comprises an automatic regulating traction force controller connected with a flat knitting machine control system; both sides of the roller mechanism are connected to the flat knitting machine frame via a force measuring device; the force measuring device can take samples of traction force dataof the roller mechanism and provide feedback for the automatic regulating traction force controller; the roller mechanism is in drive connection with a servo drive mechanism; the automatic regulatingtraction force controller is in control connection with the servo drive mechanism; the automatic regulating traction force controller can perform speed control of the servo drive mechanism through the feedback of the traction force data provided by the force measuring device. Compared with the prior art, the automatic regulating device for the roller traction force of the flat knitting machine has the advantages of not only adjusting the traction force of the roller mechanism in real time but also maintaining constant traction force during the weaving process, guaranteeing the pieces of clothmore complete and beautiful with the pieces of cloth pulled slowly and evenly, and improving production efficiency.

Description

【Technical field】 [0001] The invention relates to the technical field of flat knitting machine structures, in particular to an automatic adjustment device for the traction force of the rollers of the flat knitting machine. 【Background technique】 [0002] Flat knitting machine is the abbreviation of flat knitting machine, which belongs to a kind of knitting machinery, and generally refers to a flat knitting machine, that is, a machine that uses a horizontal knitting needle bed for weaving. Among them, the rollers in the flat knitting machine cooperate with the knitting action to pull down the fabric knitted by the needle bed. During the knitting process, the rollers need to maintain a constant traction force to pull down the cloth piece slowly and evenly, so that the cloth piece is more complete and beautiful, and avoids the The floating of the cloth will cause mechanical failures such as striking the needle, pulling the looper hook, squeezing the needle latch, etc. Therefore...

AI Technical Summary

Problems solved by technology

[0003] The traction force of the roller is mainly determined by the friction coefficient of the roller skin. If the friction coefficient is too small and the holding force is insufficient, the pulling process cannot be carried out normally; if the friction coefficient is too large, it is easy to cause damage to the fabric, making the fabric fibers or The end of the thread is easy to wind around the roller, affecting the normal operation of the flat knitting machine

The traction force of the rollers is not adjustable, and the traction force can only be adjusted by adjusting the angle of the rollers at the manufacturer. When there is a problem with the opening and closing sensor of the rollers, the signal from the magnetic steel cannot be sensed. During the process of the rotation of the rollers, the motor will If the brake is not good, it may jack up the needle plate; once the traction force is fixed after leaving the factory, if the change of traction force caused by the change of cloth thickness and width cannot be dealt with, the traction force is not enough, making the film look imperfect and the coil If the size is inconsistent, the knitted grains will be deformed or even broken if the traction force is too large; now the most common method in the market is to adjust the traction force of the rollers by adjusting the running speed of the rollers, but the traction force cannot be quantified by adjusting the speed. , when the hardness of the roller skin changes, the change of surface friction causes the traction force to change, so that it is impossible to maintain a constant traction force in real time

Images