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Lower feeding mechanism

A feeding mechanism and feeding technology, applied in the direction of cloth feeding mechanism, sewing machine components, textiles and papermaking, etc., can solve the problems of small lifting force and inability to sew perfect stitch length.

Active Publication Date: 2015-05-06
WUJIANG XILI MACHINERY FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bottom feeding mechanism is an important part of the lockstitch sewing machine. The existing bottom feeding mechanism has a small lifting force and cannot sew various small pieces such as shoes and purses with perfect stitch length.

Method used

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Embodiment Construction

[0016] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0017] Such as figure 1 , figure 2 As shown, a lower feeding mechanism includes a feeding shaft 1, a tooth lifting shaft 2, a tooth frame 3, and a feeding tooth 4 fixed to the tooth frame 3. The two ends of the feeding shaft 1 are respectively connected with a crank 5 before feeding and a crank after feeding. 6. Before feeding, the crank 5 is connected to the tooth frame 3. After feeding, the free end of the crank 6 is connected to the feeding connecting rod 7. The tooth lifting shaft 2 is sequentially set with the tooth lifting shaft gear 8, the tooth lifting crank 9, and the tooth lifting cam 10. , the tooth lifting shaft gear 8 is fixed ...

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Abstract

The invention relates to a lower feeding mechanism which comprises a feeding shaft, a feed lifting rock shaft, a tooth rack, and a feed dog fixed with the tooth rack, wherein the two ends of the feeding shaft are respectively connected with a front feeding crank and a rear feeding crank; the front feeding crank is connected with the tooth rack, and the free end of the rear feeding crank is connected with a feeding connecting rod; a feed lifting rock shaft gear, a feed lifting rock shaft crank and a feed lifting rock shaft cam are arranged on the feed lifting rock shaft sequentially in a sleeving way; the feed lifting rock shaft crank is connected with a feed lifting rock shaft lever; the feed lifting rock shaft lever is connected with the tooth rack. The lower feeding mechanism drives the feeding shaft to swing through the feeding connecting shaft, and the feeding shaft drives the feed dog on the tooth rack to move back and forth through the front feeding crank, drives the feed lifting rock shaft cam, the feed lifting rock shaft crank and the feed lifting rock shaft lever through the feed lifting rock shaft and further drives the feed dog fixed onto the tooth rack to move up and down so as to realize composite motion. The lower feeding mechanism is used for a drum-type sewing machine for sewing of various small pieces such as shoes and handbags.

Description

technical field [0001] The invention relates to a feeding mechanism, in particular to a lower feeding mechanism for a cylinder-type comprehensive single-needle sewing machine. Background technique [0002] With the rapid development of the garment industry, the quality requirements for luggage and leather goods processing machinery in the market are also getting higher and higher. Lockstitch sewing machines use a sewing thread to form a stitch on the sewing material, making one or more layers The sewing materials are interwoven or stitched together, the stitches are neat and beautiful, the stitches are uniform, the sewing speed is fast, and the operation is easy, and it is widely used in the processing of bags and leather goods. The bottom feeding mechanism is an important part of the lockstitch sewing machine. The existing bottom feeding mechanism has a small lifting force and cannot sew various small pieces such as shoes and purses with perfect stitch length. Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B27/02
Inventor 蔡福伟
Owner WUJIANG XILI MACHINERY FACTORY
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