Lock-type chain stitch sewing machine

A sewing machine and stitch technology, which is applied to sewing machine components, sewing machine thread take-up devices, sewing machine ferrule mechanisms, etc., can solve problems such as obstructing thread passages and overall space problems, and achieve the effect of reliable operation and overall space saving.

Active Publication Date: 2007-10-24
DURKOPP ADLER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to the cantilever in DE 101 17 560C1, this web also leads to the above-mentioned overall space problem
Also, the receptacles of the finger holders can undesirably block the wire passage

Method used

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  • Lock-type chain stitch sewing machine
  • Lock-type chain stitch sewing machine
  • Lock-type chain stitch sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] A bartack sewing machine 1 has a base plate 2 with a post 3 extending upwardly from the base plate and an angled arm 4 . The arms terminate at the head 5 . An arm shaft 6 is rotatably installed in the arm 4 . Inside the head 5 , the arm shaft drives a crank gear 7 via a guide rod 8 . The crank gear 7 is drivingly connected to a needle bar 9 which is mounted axially displaceable in the head 5 . The needle bar has a needle 10 at its lower end. The needle 10 can be raised or lowered on the vertical axis 11 by means of the crank gear 7 . The needle 10 guides in its eye the needle thread 13 supplied by the bobbin 12 via the thread tensioner and the guide rod 8 .

[0028] The base plate 2 carries a screwed support plate 14 on which a sewing workpiece 15 is placed. The support plate 14 is configured with a recess 16 for the passage of a feeder 17 . The feeder has stitch holes 18 for the passage of needles 10 . The feeder 17 is positioned in a known manner in driving con...

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PUM

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Abstract

The lockstitcher is provided with shuttle hook, the shutter hook can revolve around the upright axial cord of the shuttle hook along the rotation direction of the needlework operation process and it composes the shutter body of the bobbin cover which is used to accommodate the supplying source of the shutter thread in the inner part. The knife blade can rotate around the pivot axis of oscillation which is parallel to the axial cord of the shuttle hook between the initial position and take-up position. In the operation process of the needlework, the first rotate-proof stop catch which cooperates with the opposite stop catch of the first bobbin cover avoids the bobbin cover rotating around the axial cord of the shutter hook in the rotation direction. In the opposite direction, the second rotate-proof stop catch which cooperates with the opposite stop catch of the second bobbin cover fixes the bobbin cover. The second rotate-proof stop catch is fixed on the wire-restoring blade. When the shuttle hook rotates along the opposite direction, the location guarantee arrangement in the chucking location fixes the wire-restoring blade on the initial position. At the initial position, the second rotate-proof stop catch cooperates with the opposite catch stop of the second bobbin cover. Therefore it forms the sewing machine which has little critical demand to the whole component room of the line access zone between the bobbin cover and the bearing plate.

Description

technical field [0001] The present invention relates to a lockstitch sewing machine, in particular to a double thread type lockstitch sewing machine comprising: a shuttle which is rotatable around a vertical shuttle axis in the rotation direction of the sewing operation and which comprises a shuttle body , the shuttle body accommodates the bobbin cover for receiving the supply source of the shuttle thread; the take-up blade that can rotate around the pivot axis parallel to the axis of the shuttle between the initial position and the thread take-up position, the bobbin cover rotates along the sewing operation process The rotation around the axis of the shuttle is limited by the first anti-rotation stopper and the first spool cover opposite stopper, and its rotation in the opposite direction is stopped by the second anti-rotation stopper and the second bobbin cover. block limit. Background technique [0002] Such a sewing machine is known from DE 101 17 560 C1. The cover bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B1/12D05B57/08D05B49/00D05B65/00
CPCD05B65/00D05B57/265D05B57/06D05B57/14
Inventor A·里弗尔
Owner DURKOPP ADLER GMBH
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