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Multi-needle sewing machine

A sewing machine and needle type technology, applied in the field of needle bar housing moving mechanism, can solve problems such as difficulty in threading operations, and achieve the effects of preventing thread interlacing, inexpensive structure, and stable action

Inactive Publication Date: 2011-08-03
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult job of threading thread in slender tube

Method used

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  • Multi-needle sewing machine
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  • Multi-needle sewing machine

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0056] Refer below Figure 1 to Figure 26 A first embodiment in which the present invention is applied to a multi-needle embroidery sewing machine (hereinafter referred to as a multi-needle sewing machine M) will be described. figure 1 It is a front view of the multi-needle sewing machine M, and the direction in which the user is located (the outside of the drawing) will be described as the front.

[0057] Such as Figure 1 to Figure 4 As shown, the multi-needle sewing machine M includes: a pair of left and right leg parts 1 supporting the whole sewing machine, a column part 2 erected from the rear end of the leg part 1, and an arm part 3 extending forward from the upper part of the column part 2. , a cylindrical base 4 extending forward from the lower end of the column part 2, a needle bar housing 5 mounted on the front end of the arm part 3 (refer to figure 2 , Figure 6 ).

[0058] The leg portion 1 , the column portion 2 , the arm portion 3 , and the cylindrical base ...

no. 2 approach

[0120] Figure 27 ~ Figure 30 The second embodiment of the present invention is shown. The second embodiment differs from the first embodiment in the structure of the support column 70, the vertical movement mechanism 71, and the like. The strut 70 is composed of, for example, a single columnar member with a U-shaped cross section, a square pipe or a circular pipe, or the like. On the mounting piece portion 40k of the wire guide member 39, the elongated holes 43A', 43B' are formed in a line in the longitudinal direction. The wire guide member 39 is vertically movably provided on the upper end of the post 70 by inserting the stepped screws 38A, 38B through the elongated holes 43A′, 43B′ and screwing them into unshown screw holes of the post 70 .

[0121] The vertical movement mechanism 71 includes a vertical movement motor 72 , a rack 73 , a pinion 74 , and a control device 75 . The vertical motion motor 72 corresponds to an actuator, and is constituted by, for example, a pe...

no. 3 approach

[0130] Figure 31 ~ Figure 34 The third embodiment of the present invention is shown. In the first embodiment, the support 24 adopts a fixed support structure in which each constituent member is finally fixed (while the sewing machine is in operation) in a fixed manner. The strut 80 of the third embodiment uses the same constituent members as the strut 24 . A detailed description of each constituent member is omitted. When the elongated holes 43A, 43B of the wire guide member 39 of the first embodiment are not formed, the wire guide member 39 is fixed to the upper end portion of the strut 80 , that is, the upper support portion mounting pieces 31A, 31B of the upper support body portion 28 .

[0131] The strut 80 has the same constituent members as the strut 24 , but its function during use is different. That is, the strut 80 has a structure in which the screws 35A and 35B of the first embodiment are removed. Therefore, the upper pillar portions 27A, 27B are swingable abou...

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Abstract

A multi-needle sewing machine includes a needle-bar case that supports needle bars; a needle-bar case transfer mechanism that transfers the needle-bar case to place a predetermined needle bar to a needle drop position; a thread guide member that is movable up and down, the thread guide member being provided with thread guide sections spaced by a predetermined distance and that guide a plurality of threads; a plurality of thread inlets that are provided at the needle-bar case, each thread inlet being uniquely associated with one of the thread guide sections and that introduces the threads guided by the thread guide sections toward the needle bars; and a lifting / lowering mechanism that moves the thread guide member up and down during transfer of the needle-bar ease and the thread inlets such that the thread guide sections and the associated thread inlets maintain a constant distance therebetween.

Description

technical field [0001] The present invention relates to a multi-needle sewing machine including a needle bar housing moving mechanism for moving a needle bar housing having a plurality of needle bars. Background technique [0002] Conventionally, there have been multi-needle sewing machines for sewing embroidery patterns of various colors. The multi-needle sewing machine includes a needle bar housing, and the needle bar housing houses a plurality of needle bars for installing machine needles on the lower ends of the needle bars. The needle bar housing is moved in the left-right direction, and the needle bar to be used among the plurality of needle bars is moved to the sewing position, that is, the needle dropping position. In such a multi-needle sewing machine, the movement of the needle bar housing may loosen and intertwine the threads drawn from the plurality of bobbins. [0003] As a technique for improving this situation, there is a technique described in Japanese Pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/14D05B55/10D05B51/00D05B47/04
CPCD05C11/10D05B3/02D05C3/02D05C11/00D05B55/00
Inventor 深尾博昭
Owner BROTHER KOGYO KK
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