JP4084443B2 - Multi-needle sewing machine thread path device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a yarn path device that is provided above a sewing head of a multi-needle sewing machine and applies tension to an upper thread.
[0002]
[Prior art]
As shown in FIG. 3, a yarn path device 51 is provided above the head 59 of the multi-needle embroidery sewing machine, and a large number of tensions corresponding to the number of needles of the head 59 are provided on the front surface of the mounting base 52 of the yarn path device 51. The yarn guide with attached mechanism 53, the thread tension 54, and the yarn guide hole member 55 are arranged in a state of being close to each other. The yarn path device 51 corresponds to a nine-needle head 59, and in order from the top, nine thread guides 53 with tension applying mechanisms are arranged in a horizontal row, and nine thread tensions 54 are arranged in three rows and three columns. The three thread guide hole members 55 are attached below the thread tension 54 in each row. Then, the upper thread T is manually wound around the thread guide 53 with a tension applying mechanism, then wound around the thread tension 54, and then inserted into the guide hole of the thread guide hole member 55 from above. Passed through.
[0003]
[Problems to be solved by the invention]
However, since the nine thread guides 53 are arranged close to each other, it is difficult to wind the upper thread T around the thread guide 53 when the upper thread T is passed. Further, for the same reason, adjacent upper threads are entangled in the vicinity of the thread guide 53 during embroidery processing, and thread breakage may occur.
[0004]
If the number of needles of the embroidery head is to be increased, the lateral width of the yarn path device 51 must be increased in order to provide the thread guides 53 corresponding thereto. For this reason, the interval between the embroidery heads 59 must be increased according to the lateral width of the yarn path device 51. In particular, in the case of a multi-needle multi-head embroidery sewing machine, an increase in the size of the embroidery sewing machine becomes a problem.
[0005]
Further, since the interval between the thread guide 53 and the thread tension 54 corresponding to each needle is different for each needle, the tension varies among the needles, thereby varying the quality of the embroidery.
[0006]
The object of the present invention is to solve the above-mentioned problems, easy threading, and even if the lateral width is narrow, entanglement between adjacent threads hardly occurs during embroidery processing, and multi-needle that can improve the quality of embroidery It is to provide a threading device for a sewing machine.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a yarn path device for a multi-needle sewing machine according to the present invention is a yarn path device that is provided above a sewing head of a multi-needle sewing machine and applies tension to an upper thread. A large number of sets corresponding to the number of needles of the sewing head at the front of the path device, a thread insertion hole at the upper part of the mounting base of the thread path device, a tension member below the thread insertion hole, and a first member below the tension member In the thread passage device of the multi-needle sewing machine provided with a two-tension member, a number of thread insertion holes at the top of the mounting base for first passing the upper thread through the thread passage device are divided into two rows vertically, The lower row of thread insertion holes are relatively positioned between the upper row of thread insertion holes as viewed from above, and the plurality of tension members are vertically arranged in two rows. The tension members in the upper row are separated from each other and viewed from the plane. The lower row tension members are disposed so that the lower row tension members are positioned relatively to each other, and the lower row thread insertion holes are located between the upper row tension members when viewed from the front. It is formed so as to pass through the mounting base of the yarn path device from the front side to the back side so as to be located on the upper side, and the mutual spacing between the plurality of thread insertion holes and the plurality of tension members is substantially the same in all sets. The plurality of second tension members are divided into two rows in the upper and lower directions, and the second tension members in the lower row are relatively between the second tension members in the upper row as viewed from the plane. The two tension members are disposed so that the plurality of tension members and the plurality of second tension members are substantially equal in all groups .
[0013]
In the above, the “many” is not particularly limited as long as it is 3 or more, but if it is 8 or more, the effect is particularly great.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a thread passage device 1 for a multi-needle embroidery sewing machine according to an embodiment. The yarn passage device 1 is provided above an embroidery head 3 of a multi-needle embroidery sewing machine 2 and tensions an upper thread T. It is given. The yarn path device 1 includes 15 sets of thread insertion holes 5 corresponding to 15 needles of the embroidery head 3, a thread guide 6 with a small knob as a first tension member, and a thread tension 7 with a knob as a second tension member. And a large number of yarn guide hole members 8.
[0015]
The fifteen yarn insertion holes 5 are divided into two upper and lower rows (eight in the upper row and seven in the lower row) on the upper part of the mounting base 4 of the yarn path device 1, and relatively viewed from the plane. The lower row of thread insertion holes 5 are disposed relatively between the upper row of thread insertion holes 5. The thread insertion hole 5 is a hole penetrating from the front surface to the back surface of the mounting base 4 in the upper part of the mounting base 4, and a thread insertion member 9 is press-fitted and fixed to the front surface of the hole. A joint pipe 10 is press-fitted and fixed to the thread insertion hole 5 on the back surface side of the mounting base 4, and a flexible pipe 11 is press-fitted and fixed to the opening on the side opposite to the mounting base of the joint pipe 10. The flexible tube 11 is for guiding the upper thread T unwound from a bobbin (not shown) standing on a yarn stand (not shown) to the yarn path device 1.
[0016]
The fifteen yarn guides 6 are divided into two rows (8 in the upper row and seven in the lower row) on the mounting base 4, and the yarn guides 6 in the upper row relative to the plane. The yarn guides 6 in the lower row are disposed so as to be relatively located between the two. As described above, since the distance between the thread guides 6 in the lateral direction is large although the number is large, the upper thread T is easy to pass through and the upper thread T is difficult to get entangled with the nearby thread guide 6.
[0017]
Here, the lower row of the thread insertion holes 5 is arranged between the rows of the thread guides 6 so that the thread insertion holes 5 are provided close to the corresponding thread guides 6. For this reason, since the upper thread T pulled out from the thread insertion hole 5 is immediately guided by the thread guide 6, the upper thread T between the thread insertion hole 5 and the thread guide 6. There is little entanglement.
[0018]
The fifteen thread tensions 7 are divided into two upper and lower rows (eight in the upper row and seven in the lower row) on the lower side of the thread guide 6 of the mounting base 4 and relatively viewed from the plane. The thread tension 7 in the lower row is disposed relatively between the thread tensions 7 in the upper row. As described above, since the distance between the thread tensions 7 in the lateral direction is large although the number is large, the upper thread T is easy to pass through and the upper thread T is difficult to get entangled with the nearby thread tension 7. In addition, a thread guide hole member 8 is appropriately disposed directly below or obliquely below each thread tension 7, and the upper thread T heading to the embroidery head 3 via the thread tension 7 is transferred to other thread tensions 7 and other thread tensions. The guide is designed so as not to get entangled with the upper thread T or the like.
[0019]
As described above, the mutual interval between the 15 thread insertion holes 5 and the 15 thread guides 6 is substantially the same in all sets. Further, the mutual interval between the 15 thread guides 6 and the 15 thread tensions 7 is also made substantially the same in all sets. For this reason, there is little dispersion | variation in the tension | tensile_strength provided to each upper thread T, and the quality of embroidery can be improved.
[0020]
In order to pass the upper thread T through the yarn path device 1, first, the upper thread T unwound from the bobbin and inserted into the flexible tube 11 is pulled out from the thread insertion hole 5 to the front side of the yarn path device 1. Then, after passing through the thread guide 6, the thread tension 7 and the thread guide hole member 8 in order, the thread is supplied to the needle of the embroidery head 3.
[0021]
In addition, this invention is not limited to the structure of the said embodiment, For example, as follows, it can also be changed and embodied suitably in the range which does not deviate from the meaning of invention.
(1) The thread insertion hole 5, the thread guide 6, and the thread tension 7 are arranged in three or more rows in the vertical direction.
[0022]
(2) Without using the flexible tube 11, the upper thread T unwound from the bobbin is once hooked on a thread guide provided at a position higher than the bobbin between the thread stand device and the yarn path device 1. And applied to a multi-needle sewing machine having an upper thread supply structure that is stretched in the air from there to the yarn path device 1 and guided to the yarn path device 1. In this case, the upper thread T guided by the upper thread supply structure is inserted into the thread insertion hole 5 from the back surface side of the yarn path device 1, and from there to the needle is passed in the same manner as in the above embodiment.
(3) Apply to a yarn path device that does not include the thread insertion hole 5. In this case, the upper thread T unwound from the bobbin and guided to the yarn path device is directly passed through the thread guide 6.
[0023]
【The invention's effect】
As described above in detail, according to the yarn path device for a multi-needle sewing machine according to the first aspect of the present invention, it is possible to obtain an excellent effect that the upper thread is easy to pass and the upper thread is difficult to be entangled with nearby members . In addition, there is little variation in the tension applied to each upper thread, and the quality of the embroidery can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing a thread passage device of a multi-needle embroidery sewing machine according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a front view showing a thread passage device of a conventional multi-needle embroidery sewing machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thread path device 2 Multi-needle embroidery sewing machine 3 Embroidery head 5 Thread insertion hole 6 Thread guide 7 as first tension member Thread tension as second tension member

Claims (1)

A yarn path device provided above a sewing head of a multi-needle sewing machine for applying tension to an upper thread, and a plurality of sets of the yarn paths corresponding to the number of needles of the sewing machine head on the front side of the yarn path device In a thread passage device of a multi-needle sewing machine comprising a thread insertion hole at the upper part of a mounting base of the apparatus, a tension member below the thread insertion hole, and a second tension member below the tension member ,
A number of thread insertion holes in the upper part of the mounting base for first passing the upper thread through the yarn path device are divided into two rows in the upper and lower directions, and the thread insertion holes in the upper row relative to the plane. The lower row of thread insertion holes are positioned relative to each other,
The plurality of tension members are vertically divided into two rows, and are arranged so that the lower row tension members are positioned between the upper row tension members when viewed from above. And
The lower thread insertion hole is positioned above the lower edge level of the tension member between the tension members in the upper row when viewed from the front, and the thread guide device mounting base is disposed from the front to the rear. Formed to penetrate,
The mutual intervals between the multiple thread insertion holes and the multiple tension members are substantially the same in all sets,
The plurality of second tension members are vertically divided into two rows, and the second tension members in the lower row are relatively between the second tension members in the upper row relative to the plane. Arranged to be located,
The multi-needle sewing machine thread passage device, wherein the plurality of tension members and the plurality of second tension members have substantially the same distance between all the sets .

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