JPH09217261A - Method for producing pattern in machine sewing embroidery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the effective beautiful boring of a small angled hole or a large hole. SOLUTION: Embroidery is performed by a machine having at least three needles 3a, 3b, 3c or more at the machine head 1, and the tips of two needles 3a, 3b at the machine head 1 are each formed in a cutter blade. At first, the stitch sewing of a desired pattern is performed at an appropriate position of a woven cloth in a state that one of the two needles has the cutter blade perpendicular to warps of the woven cloth and the other has the cutter blade perpendicular to wefts of the woven cloth. Subsequently, the warps and the wefts of the inside of the stitched pattern are serially cut by the vertical motions of the cutter blades to bore the hole of the stitched pattern shape. Subsequently, the edge of the bored hole is cross-stitched by the third needle 3c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern forming method in sewing and embroidery.

[0002]

2. Description of the Related Art In embroidery sewing processing by a sewing machine, a pattern is formed by punching holes in a cloth by using a thin bar-shaped cutting tool.

[0003] There are various forms of the above-mentioned thin rod-shaped cutting tools.
No. 9-36022, specifically, as shown in FIG. 8, a plurality of straight cutting blades e1 are formed on the peripheral surface of a sharp cone, and the tip of the needle bar of the sewing machine head is formed. At the time of its descent, the sharp end enters a relief hole 5b formed in a cylindrical portion near the needle hole 5a provided in connection with the lower thread shuttle. Become.

When drilling using the above-mentioned cutting tool, first, a sewing needle fixed to another needle bar of the sewing machine head is operated, and as shown in FIG.
The stitch stitch 8 is applied around the woven fabric w, and then, in the process of moving the needle bar with the fixed blade up and down, the feed moving base fixedly supporting the woven fabric w is integrated with the woven fabric w. The sharp edge of the cutting tool is pierced at a small interval over the entire area a of the fabric w to be perforated, and the cutting edge e1 is moved in a small pitch at a small pitch in an appropriate direction. As shown in FIG. 9, w is chopped to change into a cotton-like material w1. The cotton-like material w1 is suctioned and removed by a suitable vacuum suction means, and a through hole is formed in the woven fabric w.

[0005]

The above-described pattern making process utilizing the hole punching process has the following problems. That is, because the processed hole is easily frayed from its periphery and to improve the appearance as a pattern, generally,
Overlocking is performed on the same peripheral edge after drilling. However, since the cotton-like material w1 remains without being completely sucked, it is embraced in the overlock sewing, and as shown in FIG. Nine parts become enormous in the thickness direction and have a poor appearance.

Further, since the sharp end of the cutting tool is pierced at small intervals over the entire area a of the woven fabric w to be pierced, it takes a long time to perform the piercing process, which is not suitable for piercing a large hole. The hole that can be processed is at most 5mm in diameter.
It is limited to the degree.

Further, due to the shape and size of the cutting blade e1, it is impossible to form a sharp acute angled triangle or square hole. An object of the present invention is to solve such a problem.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a sewing pattern sewing method according to the present invention is provided in which a sewing head is provided with at least three or more needle bars to perform sew sewing. The two needle bars in the sewing machine head each have a needle bar tip formed on a cutter blade, and one of the other needle bars has a direction perpendicular to the warp of the woven fabric. One of them is arranged in a direction perpendicular to the weft of the woven fabric. First, stitch sewing of a desired pattern is performed on an appropriate portion of the woven fabric. By sequentially cutting the warp and the weft by the up and down operation, the stitch sewing pattern shape is perforated, and then the overlocking of the peripheral portion perforated by another needle bar is performed.

Instead of the above method, the pattern can be created as follows. That is, the sewing head is provided with at least three or more needle bars to perform embroidery sewing. The two needle bars in the sewing head each have a needle bar tip formed on a cutter blade, and One has the cutter blade in the direction perpendicular to the warp of the woven fabric, and the other has the direction perpendicular to the weft of the woven fabric. Perform stitch stitching of the shape,
Next, any one of the above-mentioned cutter blades is operated up and down to cut either the warp or the weft of the woven fabric, and the stitched inside of the stitch is sewn into the stitch stitch pattern. No stitches remain, and then another needle bar is used to perform overlock stitching at the peripheral edge of stitch stitches.

In each of the above-mentioned pattern forming methods, the cutter blade is formed so that the blade width of the flat body is about 1.5 mm to 5 mm and has a receding angle θ of about 15 to 60 degrees from the tip. I do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pattern forming method according to the present invention will be described below. As shown in FIG. 1, a conventional embroidery sewing machine has a sewing machine head 1 and a sewing machine table 2 horizontally arranged below the sewing machine head 1 and is horizontally moved in contact with the upper surface of the sewing machine table 2 by an unshown machine. It has a feed moving table, a control device for controlling the operation section of the sewing machine, and a processing information input device for inputting processing information to the control device.

Generally, a plurality of needle bars 3a to 3c are arranged in the sewing machine head 1 and cloth holders 4a to 4c are provided corresponding to the needle bars 3a to 3c.

[0013] A needle plate 5 is provided at a cylindrical position directly below the sewing head 1 on the upper surface of the sewing machine base 2, and a needle hole 5a is provided in the needle plate 5 at a specific position related to a lower thread shuttle (not shown). . Reference numeral 5b denotes an escape hole into which the sharp portion of the conventional elongated blade is inserted.

In the present invention, the cutter blades 6a and 6b are attached to the two needle bars 3a and 3b instead of attaching the sewing needles to the respective tips, and the sewing needle 7 is attached to the other needle bars 3c as in the conventional case. .

Here, the cutter blades 6a and 6b are as shown in FIG. 2, that is, the tip of a conventional sewing needle is flattened to form a flat blade surface e, and the blade width is Approximately 2 mm to 5 mm, and approximately 15 from the tip
It is formed so as to have a receding angle θ of degrees to 60 degrees.

One of the cutter blades 6a is oriented so that its flat blade e is perpendicular to the warp m of the fabric to be processed on the sewing machine stand 2, and the other cutter blade 6b has a blade surface e.
Is oriented so as to be orthogonal to the weft n of the woven fabric.

On the other hand, processing information for drilling and overcasting is recorded on a floppy disk using a personal computer or the like, and the floppy disk thus processed is set in the processing information input device described above. . Further, on the supporting surface of the feed moving table, the woven fabric is positioned in a specific direction related to the flat plate surface e of the carter blades 6a and 6b and firmly fixed.

After such preparation, the embroidery sewing machine is brought into an operating state, whereby the following processing is automatically performed. That is, first, the sewing needle 7, the cloth presser 4c, and the feed moving table are operated, and as shown in FIG. 3, stitch sewing 8 is performed along the periphery of the area a to be perforated in the woven fabric w fixed to the feed moving table. Is performed.

Next, the cutter blade 6a, the cloth presser 4a and the feed moving base are operated.
a moves up and down, and when it moves down, the cloth presser 4a presses the cloth w, and under this state, the cutter blade e
Pierces the fabric w to a suitable depth in the needle hole 5a, and when the fabric w is not interfering with the cutter blade 6a, the feed moving table is horizontally moved, so that the cutter is moved. The cutter blade is moved, for example, in a closed loop with respect to the blade 6a, and the cutter blade is moved so as to be fed at a pitch equal to or less than half of the diameter (about 1.6 mm) each time one vertical displacement of the blade 6a is completed. Will be Therefore, the cutter blade 6a moves the cloth w during the movement as shown in FIG.
Of the warp m to be cut in the triangle mark
With this, it is surely pressed down and cut.

Subsequently, the other cutter blade 6b and the cloth retainer 4b
And the feed moving table operates in the same manner as the cutter blade 6a and the like, and the fabric w is also moved in the same closed annular shape with respect to the cutter blade 6b. All of the circled portions of the cut weft n to be cut are surely held down by the cutting surface e of the own to cut.

In such a cutting process, the cutter blade 6
The slanted blade surface e of aN6b facilitates the cutting of the warp yarn m and the weft yarn n. Thus, the warp yarns m and the weft yarns n of the woven fabric w in the area a to be perforated are completely separated from the main body of the woven fabric w. h is formed.

Thereafter, the needle bar 3c and the sewing needle 7 are operated again, and as shown in FIG. 5, overlock sewing 9 for fraying prevention and aesthetic appearance is performed along the periphery of the through hole h, and one pattern is formed. A hole is made. Thereafter, the same processing as described above is performed for the fabric w.
Will be implemented at different locations.

In this embodiment, the through hole h to be processed
May have an arbitrary shape, and which one of the two cutter blades 6a and 6b is operated first in the processing of one pattern hole is arbitrary.

Next, an embodiment of another pattern forming process by the cutter blade 6a or 6b will be described. First, the fabric w is fixed on the feed moving table of the embroidery sewing machine so that the warp m and the weft n are orthogonal to the plate-like blade surfaces e of the cutter blades 6a and 6b as in the previous embodiment. The stitch sewing of the desired pattern shape is performed on the patterning portion of the fabric w by operating the needle 7 and the feed moving table, and thereafter, the stitch sewing is performed by operating the feed moving table together with one of the cutter blades 6a or 6b. Only one of the warp m and the weft n is cut along the inner circumference of the stitch stitch portion, and only the other weft n or the warp m remains in the stitch stitch.

Thus, for example, as shown in FIG.
Only the remaining cylinder place p1 and only the warp m remain p
2 will appear. Subsequently, the needle bar 3c to which the sewing needle 7 is fixed and the feed moving table are operated to operate the respective points p1,
An overlock stitch 9 for preventing fraying and aesthetic appearance is performed on the periphery of p2.

In the above embodiments, the cutter blades 6a, 6a
b is directly fixed to the needle bar, but the present invention is not necessarily limited to this. For example, as shown in FIG. Insert the cutter blade 6 into the tip of
You may make it fix and fix. At this time, a spring 15 is arranged around the cutter blade 6 as necessary, and the upper end of the spring 15 is fixed to the distal end portion of the connection tool 13, and the lower end projects downward from the cutter blade 6. Blade 6
At the time of descent, the tip is inserted into the escape hole 5b.

In this apparatus, the cutting process of the woven fabric w is performed by the needle hole 5.
There is no essential difference from the above-described one, except that the operation is performed not at the position a but at the position of the escape hole 5b.

[0028]

According to the first aspect of the present invention, the two cutter blades can accurately cut a specific portion of the warp or weft to be cut, and therefore have a small acute triangle. A hole h such as a square or a square can be clearly drilled, and a hole h having a diameter larger than, for example, 5 mm can be formed by cutting only the periphery of the area to be drilled. It can be processed efficiently. Further, since the fabric portion within the area to be perforated is completely cut and separated from the fabric main body side and is neatly removed, the cotton-like material w1 of the woven fabric is embraced in the overlock sewing at the time of the overlock sewing around the hole. The pattern hole can be beautifully finished.

According to the second aspect of the present invention, the pattern portions p1 and p2 are formed on the woven fabric only by the weft or the warp, so that a pattern having a different taste can be obtained. Further, according to the third aspect, a good cut of the woven fabric can be obtained, and a pattern hole having an excellent appearance can be formed.

[Brief description of drawings]

FIG. 1 is a diagram showing a part of a embroidery sewing machine used for carrying out the present invention.

FIG. 2 is a view showing a sewing needle-shaped cutting tool according to the present invention.

FIG. 3 is a diagram showing a woven fabric on a sewing machine table, which is stitched;

FIG. 4 is an explanatory view showing a state in which a woven fabric is cut by a sewing needle-like blade.

FIG. 5 is a diagram showing a woven fabric on which overcasting has been performed around a processed through hole;

FIG. 6 is a diagram showing a patterned textile fabric.

FIG. 7 is a view showing another mounting structure of the sewing needle blade.

FIG. 8 is a view showing a relationship between a conventional blade tool and a needle plate.

FIG. 9 is a view showing a woven fabric in which a perforated portion is cut by a conventional cutting tool.

FIG. 10 is a diagram showing a woven fabric after overlocking is performed on the periphery of a hole processed by a conventional cutting tool.

[Explanation of symbols]

 Reference Signs List 1 sewing machine head 2 sewing machine stand 3, 3a, 3b and 3c needle bar 6, 6a and 6b sewing needle-like cutting tool 7 sewing needle e cutter blade m warp n weft w fabric (fabric)

Claims (3)

[Claims] 1. A sewing machine head comprising at least three or more needle bars for performing embroidery stitching, wherein the two needle bars in the sewing machine head each have a tip of a needle bar formed on a cutter blade. And one of the cutter blades should be in the direction perpendicular to the warp of the fabric and the other should be in the direction perpendicular to the weft of the fabric. Perform stitch stitching of the desired pattern shape, then cut the warp and weft sequentially by the up and down operation of the cutter blade on the inside of the stitched stitch to perform stitch sewing pattern shape punching, and then perform other A pattern creating method in sewing sewing embroidery, wherein overlock sewing is performed on a peripheral portion punched with a needle bar. 2. A sewing machine head comprising at least three or more needle bars for performing embroidery stitching, wherein the two needle bars in the sewing machine head each have a tip of a needle bar formed on a cutter blade. One of the cutter blades should be in the direction perpendicular to the warp of the fabric, and the other should be in the direction perpendicular to the weft of the fabric. Stitch sewing of the pattern shape to be performed, and then any one of the cutter blades is vertically operated to cut either the warp or the weft of the woven fabric, and the stitched inside of the stitched pattern is formed. A method for creating a pattern in sewing sewing by sewn sewing, characterized in that either a cut weft or a warp remains, and then another needle bar performs overlock stitching on the periphery of stitch stitches. 3. The cutter blade has a blade width of about 1.5 mm to 5 mm, and is about 15 degrees from the tip.
The method for creating a pattern in a sewing machine sewing stitch according to claim 1 or 2, wherein the method is created so as to have a receding angle θ of 60 degrees.