JP2578847Y2 - Thread wrap prevention cover for multi-needle sewing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread wrap prevention cover for a multi-needle sewing machine.

[0002]

2. Description of the Related Art Generally, a multi-needle embroidery sewing machine 1 is shown in FIG.
As shown in FIG. 1, a sewing machine arm 4 is disposed on a sewing machine table 3, and a needle bar support case 5 is attached to a front end thereof so as to be movable in the left-right direction. The needle bar support case 5 supports five needle bars 6 so as to be vertically movable, and a sewing needle 7 is attached to a lower end of each needle bar 6. Each sewing needle 7 has
Through the thread tensioner 8 and the balance 9 on the needle bar support case 5, different types of yarns, for example, yarns of different colors are supplied from a yarn supply source (not shown). The needle bar support case 5 is driven and moved by a needle selection motor 10 attached to the sewing machine arm 4, and positions one of the five needle bars 6 and the sewing needle 7 at the use position.

[0003] The needle bar 6 positioned at the use position is connected to a sewing machine motor 11 via a power transmission mechanism (not shown), and the sewing machine motor 11 reciprocates up and down. At a position facing the needle bar 6 in the use position,
A sewing bed 12 protrudes from the sewing machine table 3, and a thread catcher (not shown) for forming a stitch on the work cloth W to be sewn on the sewing bed 12 in cooperation with the sewing needle 7. ) Is provided.

[0004] On both sides of the sewing machine table 3, two Y
A direction moving frame 13 (only one is shown in FIG. 3) is provided so as to be movable in the direction of arrow Y, and is moved by an arbitrary distance in both the forward and reverse directions by a Y-axis drive motor (not shown). A support frame 14 extends between the two Y-direction moving frames 13, and the X-direction moving frame 15 is supported by the support frame 14 so as to be movable in the arrow X direction.

[0005] The X-direction moving frame 15 is moved by an X-axis drive motor (not shown) by an arbitrary distance in both the forward and reverse directions, and a work cloth holding frame 16 for detachably holding the work cloth W is attached thereto. The work cloth holding frame 16 is moved in the X-direction by the movement of the X-direction moving frame 15 and the Y-direction moving frame 13.
It can be moved to any position on the Y plane. Y-direction moving frame 13, Y-axis drive motor, X-direction moving frame 1 described above
5. The work cloth feeder 17 is constituted by the X-axis drive motor, the work cloth holding frame 16, and the like.

In the embroidery sewing machine 1 described above, a cover 50 as shown in FIG. As shown in FIG. 4, the cover 50 has a substantially U-shape, and an insertion hole 52 for fitting into the engaging portion 20 provided on the side surface of the needle bar support case 5 is provided. It is provided at the upper and lower ends of both ends.

In the cover 50 having such a configuration, when the cover 50 is attached to the needle bar support case 5, each of the insertion holes 52 is fitted into the locking portion 20. Then, the balance 9 exposed from the front surface of the needle bar support case 5 and the thread hung on the balance 9 are covered with the cover 50.
Covered by This prevents the operator from touching the operating balance 9.

[0008]

However, in the cover 50 as described above, since the cover 50 has a substantially U-shape, one of the five needle bars 6 has
When the sewing machine motor 11 reciprocates in the vertical direction, the thread on the balance 9 interlocked with the vertical movement of the needle bar 6 interferes with the thread on the next balance 9 and becomes entangled. There was a case. In other words, when the balance 9 is moved up and down in conjunction with the vertical movement of the needle bar 6 and the balance 9 is lowered, the thread hanging on the balance 9 is slackened.

In an embroidery sewing machine, the balance 9 repeatedly moves up and down at a high speed, and the thread hanging on the balance 9 is slackened or stretched, so that the thread may be entangled with an adjacent thread. If the thread of the balance 9 moving up and down is entangled with the next thread, the tension of the thread of the balance 9 will increase and affect the upper thread tension, so that sewing cannot be performed correctly. was there. Furthermore, if sewing is continued while the thread is entangled with the next thread, the thread may be broken. Further, when the balance 9 moves up and down and the thread comes into contact with an adjacent balance 9, the balance 9 moves up and down at a high speed, so that there is a problem that the thread is broken.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a thread wrap prevention cover for preventing interference between threads hanging on a plurality of balances.

[0011]

SUMMARY OF THE INVENTION In order to achieve this object, a thread wrap prevention cover according to the present invention moves up and down to sew an object to be sewn, and corresponds to the up and down movement of each needle. A cover attached to a multi-needle sewing machine having a plurality of balances supported so as to be vertically movable, the cover being formed by an outer frame, a plurality of partitions provided on the outer frame, an outer frame and the partitions. When the cover is attached to the multi-needle sewing machine, the divisions are formed such that each of the balances is accommodated in each division.

[0012]

In the present invention having the above structure, when a cover is attached to a multi-needle sewing machine having a plurality of needles and a plurality of balances, a plurality of divisions formed by an outer frame and a plurality of partition walls are provided. Within each of the sections, each of the balances fits, preventing interference between the threads hanging on the balance.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The embroidery sewing machine to which the thread wrap prevention cover of this embodiment is attached is the same as the sewing machine described in the related art, and the same members are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 1, the outer frame 24 of the thread wrap prevention cover 22 of this embodiment has a substantially U-shape. An insertion hole 26 that fits into the provided locking portion 20 is provided. The outer frame 24 is provided with a partition wall 28 so that the inside of the outer frame 24 is divided into the number of needle bars 6 provided on the embroidery sewing machine. When the thread wrap prevention cover 22 is attached to the front surface of the needle bar support case 5, each balance 9 is accommodated in each of the divided portions 30 divided by the partition wall.

When the thread wrap prevention cover 22 is attached to the needle bar support case 5 as described above, as shown in FIG. Fit into. Then, the balance 9 is accommodated in each of the divided portions 30 together with the thread. Therefore, it is possible to prevent interference between the threads hung on the respective balances 9, so that the thread tension is not affected, the sewing tension is not affected, and the thread is tangled and cut, or the thread is broken. It will not be cut off by hitting the balance 9 next to it.

[0017]

[Effects of the Invention] As is apparent from the above description, the yarn entanglement prevention cover of the present invention prevents interference between the yarns hanging on a plurality of balances, thereby affecting the upper thread tension and the yarn. Prevent cutting.

[Brief description of the drawings]

FIG. 1 is a perspective view of a yarn entanglement prevention cover of the present embodiment.

FIG. 2 is an explanatory view when the thread wrap prevention cover of the present embodiment is attached to an embroidery sewing machine.

FIG. 3 is an explanatory view when a conventional cover is attached to an embroidery sewing machine.

FIG. 4 is a perspective view of a conventional cover.

[Explanation of symbols]

 7 Needle 9 Balance 22 Thread prevention cover 24 Outer frame 26 Insertion hole 28 Partition wall 30 Dividing part

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Claims (2)

(57) [Scope of request for utility model registration] 1. A multi-needle sewing machine having a plurality of needles for sewing a workpiece by moving up and down, and a plurality of balances supported to be able to move up and down corresponding to the up and down movement of each of the needles. An outer frame, a plurality of partitions provided on the outer frame, and a plurality of divided portions formed by the outer frame and the partitions, wherein the cover is attached to the multi-needle sewing machine. In this case, the anti-winding cover for a multi-needle sewing machine is characterized in that the divisions are formed in the respective divisions so that each of the balances fits therein. 2. The apparatus according to claim 1, wherein the outer frame and the partition have a length within a range in which the balance can move up and down.
The thread anti-cover for the multi-needle sewing machine described in the above.