Sewing machine

A sewing machine and opener technology, which is applied in the direction of sewing machine components, sewing equipment, sewing machine ring mechanism, etc., can solve the problem of high construction cost

Active Publication Date: 2005-11-02
DURKOPP ADLER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of two transmissions, the ...

Method used

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  • Sewing machine
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Examples

Experimental program
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Embodiment Construction

[0013] exist figure 1 The double lockstitch sewing machine shown in generally has an upper arm 1 , a vertical frame 2 and a lower housing-like base 3 . Mounted in the arm 1 is an arm shaft 4 via which a needle bar 5 with a needle 6 can be driven up and down. In addition, the thread take-up lever 7 is also driven by this arm shaft.

[0014] Supported in the base plate 3 is a vertical shuttle 8 , that is to say a double lockstitch shuttle 8 rotatable about a vertical axis 9 . A shuttle drive shaft 10 , which carries the shuttle 8 and is drivable about an axis 9 , is rotatably mounted in a shuttle support housing 11 in the base plate 3 . The shuttle drive shaft is driven by a drive shaft 12 via a bevel gear 13 . The drive shaft 12 is in turn driven by the arm shaft 4 via a toothed belt drive 14 . The toothed belt drive 14 has a transmission ratio of 1:1. The bevel gear transmission 13 is dimensioned to achieve a transmission ratio of 1:2. That is, when the arm shaft 4 and t...

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PUM

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Abstract

The sewing machine has a looper (8) which is powered to rotate around a vertical axis, incorporating a bobbin capsule (21) with lifter cams (31). A capsule lifter (33) has a lifter lever (32) to make contact with the cams, and a feeler lever (40). The feeler lever lies against a cam disk surface (42) of an axial cam disk (39), fitted to a transmission shaft with its power taken from the looper drive shaft (10).

Description

technical field [0001] The present invention relates to a sewing machine. Background technique [0002] Such a sewing machine is known from DE 100 25 851 C1, which has an arm, a base plate and a needle mounted in the arm in a drivably movable up and down manner for guiding a needle thread. The sewing machine also has a shuttle that is supported in a shuttle support housing in the base plate and can be driven to rotate in one direction of rotation by means of a vertical shuttle drive shaft, and a drive drive that is supported in the base plate and can be driven. axis. In addition, there is also a transmission device arranged between the drive shaft and the shuttle drive shaft for driving the shuttle drive shaft at double the rotational speed of the drive shaft. A bobbin case mounted in a freely rotatable manner relative to the shuttle is provided in the shuttle. The bobbin case accommodates a bobbin and is provided with a (air gap) opener lug (Lüfter-Nocken) and has a stem...

Claims

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Application Information

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IPC IPC(8): D05B57/14D05B57/26
CPCD05B57/143D05B57/265D05B57/26
Inventor C·黑克纳M·里希特
Owner DURKOPP ADLER GMBH
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