Sewing machine with wire-cutting device
A sewing machine and thread cutting technology, which is applied in the direction of sewing machine components, sewing machine ring mechanism, sewing machine cutting thread mechanism, etc., can solve the problem of the sharpness of the cutting edge and the timeliness decline, the adjustment of the elastic pressing force is easy to produce deviation, and it is difficult to ensure the cutting edge Sharpness and other issues, to achieve the effect of good edge sharpness
Inactive Publication Date: 2012-12-26
YAMATO SEWING MASCH MFG CO LTD
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Problems solved by technology
Not only that, but the clamping plate also needs to be installed on the narrow part of the back of the fixed knife on which the pressing mechanism is installed. Therefore, there is a problem that the installation of so many parts is complicated and the installation (assembly) operation itself becomes very difficult.
In addition, due to the large number of parts, the manufacturing errors and assembly errors of various parts are gathered together, which easily causes deviations in the elastic pressing force on the movable knife. As a result, there is a problem that it is difficult to ensure the desired Good and uniform cutting edge sharpness, and it is easy to produce deviations when adjusting the elastic pressing force, which cannot avoid the time-sensitive decline of cutting edge sharpness
Method used
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[0021] figure 1 It is a schematic perspective view of the whole sewing machine when the sewing machine with a thread cutting device of the present invention is applied to a three-needle cylinder type sewing machine, figure 2 It is an exploded perspective view of the components of the thread cutting device. In this three-needle cylinder type sewing machine M, a built-in sewing machine main shaft, a needle drive mechanism, and a presser foot drive mechanism (because these parts are known, Therefore, the detailed structure and description thereof will be omitted) of the sewing machine housing portion 3 and the cylindrical bottom plate 1.
[0022] Such as figure 1 and figure 2 As shown, this cylindrical base plate 1 is divided into a lower base plate portion 1A facing the upper opening and an upper cover plate portion 1B covering the upper opening of the lower base plate portion 1A. Between these lower base plate portion 1A and the upper cover plate portion 1B is set as im...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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A sewing machine having a thread cutting device is provided to secure the good sharpness and to maintain the sharpness for a long time. A box shape bed is formed by a lower bed portion and an upper cover portion(1B) for covering the upper opening of the lower bed portion. An inner cover with a plate shape is installed between the lower bed portion and the upper cover portion. A needle board(5) is fixed at the free end of the lower bed portion through a screw. A looper and a lopper driving device are embedded at the lower portion of the needle board. A bed portion cover for encompassing the circumference of the looper and the looper driving device is installed to the free end of the box shape bed detachably from the top of the free end. A needle bar and a press bar are protruded downwardly and supported to the top end of an arm portion of the sewing machine. A movable mess(15), a fixing mess(16), a thread inserting plate(17) and a thread cutting device(18) are installed at the rear surface of the needle plate.
Description
technical field [0001] The present invention mainly relates to a multi-needle cylinder type sewing machine suitable for sewing tubular parts such as T-shirt collars and cuffs and drapes, and particularly relates to a multi-needle sewing machine with the following structure: Sewing machines of the cylindrical type, etc.: having a cylindrical base plate suitable for sewing in a cylindrical portion, on the free end of which a needle plate is fixed, the needle plate having a plurality of needle drop holes perpendicular to the direction of the axis of the cylinder And the slots for the cloth feeding dogs that are arranged in front of and behind the needle drop hole and feed the cloth in the direction of the cylinder axis. A looper is provided on the lower part of the needle plate, and a thread cutting device is provided on the side of the needle plate. The thread cutting device is used for sewing After sewing, pull the needle thread and looper thread between the needle plate and th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): D05B65/00
CPCD05B37/06D05B63/02D05B65/02D05B65/06
Inventor 林田高幸射场隆史
Owner YAMATO SEWING MASCH MFG CO LTD