Pulse type deviation-rectifying cloth feeding device of lockstitch sewing machine

Abstract

A pulse type deviation-rectifying cloth feeding device of a lockstitch sewing machine comprises a cloth feeding platform (1) and is characterized in that a front installation notch (2) is formed in the front portion of the cloth feeding platform (1) in the cloth feeding direction, a rear installation notch (3) is formed in the rear portion of the cloth feeding platform (1) in the cloth feeding direction, and cloth feeding driving devices are installed at the bottom of the front installation notch (2) and the bottom of the rear installation notch (3) respectively. A front cloth feeding frame (5) is installed at the position, making contact with the cloth, of the outer end of the cloth feeding driving device located in the front installation notch (2), and a rear cloth feeding frame (6) is installed at the position, making contact with the cloth, of the outer end of the cloth feeding driving device located in the rear installation notch (3). Sliding friction between the feed dog and cloth is avoided to the maximum extent, damage to the cloth is effectively avoided, the feeding stability of the cloth is good, meanwhile, the cloth feeding deviation rectifying function is achieved, and the automation degree is high.

Description

technical field [0001] The invention relates to a cloth feeding device, in particular to a pulsating deviation-correctable cloth feeding device for a lockstitch sewing machine, which belongs to the technical field of cloth processing equipment. Background technique [0002] In the garment sewing process, feeding a large area of ​​long strips of cloth is an important step in the pre-processing part of the program, and the efficiency of cloth feeding will directly affect the processing efficiency. The traditional cloth feeding device adopts belt-type uninterrupted feeding and cloth-feeding dog device for intermittent feeding. The belt-type uninterrupted feeding method cannot meet the feeding requirements, because it needs to be fed after the cloth is fed during the processing and production process. Pause, and there are many disadvantages in adopting the cloth feed dog device. The cloth feed dog will feed the sewing cloth forward while doing circular motion, and the cloth will...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the existing cloth feed dog device with simple structure, the friction contact area between the cloth feed dog and the cloth is small, and the friction contact time is short, The feeding stability of the cloth is not good, the smoothness is not high, and it is easy to be biased during the feeding process. It does not have the function of correcting the cloth feeding, and there are certain defects and deficiencies in the damage to the cloth. Now we provide a reasonable structure. , Changed the working mode and running track of the traditional feed dog, adopted the pulsating feed mode, the friction contact area between the feed dog and the fabric is larger, and the sliding friction between the feed dog and the fabric is avoided to the greatest extent. It effectively avoids damage to the fabric, has good stability in feeding the fabric, and has the function of correcting the deviation of the fabric in the feeding process. There will be no deviation during the feeding process. A lockstitch sewing machine with a high degree of automation. device

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