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Sewing machine

A sewing machine and sewing thread technology, applied in sewing machine components, sewing equipment, sewing machine ferrule mechanism, etc., can solve the problems of wear, intense bobbin case opening movement, noise, etc., to avoid violent collision, avoid bobbin case vibration, reduce Effects of noise problems

Inactive Publication Date: 2007-10-17
格德・帕帕杰斯基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this forced movement, a relatively violent opening movement of the bobbin case is generated, resulting in corresponding noise and wear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The double chain stitch sewing machine represented in FIG. 1 has an upper machine arm 1, a vertical vertical chamber 2 and a shell-like base plate 3 at the bottom in a conventional manner. The machine arm shaft 4 is housed in the machine arm 1, and the needle bar 5 is with the sewing needle 6 and can be driven by the machine arm shaft to move up and down. In addition, the arm shaft also drives the thread take-up lever 7 .

[0037] The bottom plate 3 houses a vertical shuttle 8 , that is a shuttle that can be driven to rotate around a vertical axis 9 . The shuttle drive shaft 10 , which supports the shuttle 8 and can be driven in rotation about an axis 9 , is mounted rotatably in a bearing housing 11 mounted in the base plate 3 . Shuttle drive shaft is driven by transmission shaft 12 through helical gear transmission 13 . The power transmission shaft 12 is driven by the machine arm shaft 4 through the toothed belt transmission device 14 again. The gear ratio of the to...

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PUM

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Abstract

The present invention relates to a sewing machine provided with a looper(8)drivable around a vertical axis has the bobbin case(19)having a vent body cam(28). A case vent body(30)is provided with a vent body lever(29)butted against the vent body cam(28), and an operating lever(32). The operating lever(32)is butted against a cam(39)having multiple cam faces of a drive unit(33)of the case vent body. Soft and noiseless movement of the case vent body(30)and the bobbin case(19)is achieved by the multiple cam faces.

Description

technical field [0001] The invention relates to a sewing machine, which has an organic arm, a plating plate, a sewing needle that can be driven up and down in the machine arm for guiding the sewing thread, and a pendulum that is installed in the bottom plate and can be circularly driven around the vertical axis along the first rotation direction. The shuttle, the bobbin case that is installed in the shuttle and can rotate freely relative to the shuttle. The block prevents the bobbin case from rotating in the first direction of rotation, the bobbin case opener (Kapselluefter), and the bobbin case opener driver, which has a cam that can be driven in a second direction of rotation opposite to the first direction of rotation and in a Compared with the speed of the shuttle, it is only half as large as the speed of the shuttle and rotates around the axis and has some cam surfaces. Background technique [0002] This class has a bobbin case opener by the known sewing machine of DE-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B57/12D05B57/14
CPCD05B57/14D05B57/26D05B57/28D05B57/38D05B63/00D05B75/04
Inventor 格德·帕帕杰斯基
Owner 格德・帕帕杰斯基
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