JPH02468Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to an automatic embroidery machine that can create patterns by sewing cord-shaped embroidery material onto fabric with a sewing needle, especially knit pulls.

<<Prior Art>> FIG. 4 schematically shows a part of the head of such an automatic embroidery sewing machine. This automatic needle sewing machine is a multi-head type with a plurality of heads 1 arranged in a row, and a cylindrical nipple holder 2 is rotatably attached to the bottom of the head 1. For the nipple 3
is fixed by a set screw 4. A sewing needle 6 is disposed in a through hole 5 provided at the center of the nipple holder 2 and the nipple 3, and is driven reciprocally up and down by a computer-controlled drive section within the head 1. Further, on the upper surface of the nipple 3, an insertion hole 8 for inserting a cord-shaped pricking material 7 is provided diagonally so that its lower end communicates with the through hole 5. The stitching material 7 is passed through the head 1 from a bobbin attached to the upper part of the head 1, and pulled out from the lower part of the through hole 5 of the nipple 3 together with the upper thread 9 passed through the sewing needle 6. The nipple holder 2 and the nipple 3 are intermittently rotated by a computer-controlled drive unit in the head 1 so that the piercing material insertion hole 8 faces in the direction in which the pattern is progressing. Also, fabric 10
The embroidery frame 11 on which the embroidery is placed is also computer-controlled in the X-axis and Y-axis directions. In this way, the embroidery material 7 is attached to the fabric by the upper thread 9 and the lower thread 12.
You can sew while creating a pattern on top of 0. In addition to cord sewing, this sewing machine can also perform wrapping sewing, flat stitching, and tape attachment.

<<Problems to be solved by the invention>> As shown in FIGS. 5 and 6, the nipple 3 consists of a conical body portion 3a and a shaft portion 3b for attachment to the nipple holder 2. A through hole 5 is provided through the center of the main body 3a, and a piercing material insertion hole 8 is provided diagonally from the slope 3c of the main body 3a so that the lower end 8a communicates with the through hole 5. . The piercing material 7 is inserted into this insertion hole 8.
The nipple 3 is inserted through the hole 5 and pulled out from the lower end 5a of the through hole 5, and while stitching, the nipple 3 is pulled out so that the insertion hole 8 always faces forward in the direction of pattern movement.
The rotation is controlled by a computer.

However, when the pattern is a continuous pattern as shown in FIG. As a result, the part of the sewing material 7 that is about to be sewn is affected by the part that has already been sewn and is not located in the correct position directly below the sewing needle 6. However, as shown in FIG. 8, there was a problem in that the seam 13 was shifted from the center of the material 7, resulting in an unsightly appearance. In particularly severe cases, the seam 13 could come off the pricking material 7. For this reason, conventional automatic embroidery and embroidery machines are unable to embroidery and sew fine patterns with large turning angles.

Therefore, the purpose of this invention is to provide a nipple for an automatic embroidery machine that can always sew the center of the material to be embroidered and also embroider fine patterns.

<Means for solving the problem> The needle of the automatic needle sewing machine according to this invention has a through hole through which the sewing needle moves up and down, and a needle material insertion hole whose lower end communicates with this through hole. It is characterized in that a stabbing material guide groove is provided at a position opposite to the stabbing material insertion hole at the lower end of the hole.

《Operation》 Since the needle guide groove is provided at the opposite position of the needle material insertion hole at the lower end of the through hole, even if the nipple rotates and the direction of the needle material insertion hole changes, the needle will not be inserted easily. The material is guided by the guide groove and positioned at the correct position directly below the sewing needle, so that the sewing needle can sew the center of the material to be pierced.

<<Example>> Figures 1 and 2 show an example of the nipple according to this invention, and for convenience of explanation,
The reference numerals used in FIG. 4 and subsequent figures are used as they are. The nipple 3 consists of a conical body part 3a and a shaft part 3b for attaching to the nipple holder 2, as in the past, and a through hole 5 is provided through the center of both parts. A piercing material insertion hole 8 is provided diagonally from the slope 3c of the main body 3a so that the lower end 8a communicates with the hole 5. The stabilizing material guide groove 14, which is a characteristic part of this invention, is arranged so that it communicates with the through hole 5 at a position opposite to the stabilizing material insertion hole 8 at the lower end 5a of the through hole 5, and the center of the through hole is 5 and the center of the insertion hole 8.

By providing the guide groove 14 in the lower end portion 5a of the through hole 5 at a position opposite to the piercing material insertion hole 8, the piercing material 7 inserted from the piercing material insertion hole 8 in FIG. is sewn onto the fabric 10 with the sewing needle 6, the needle material 7 near the position to be sewn with the sewing needle 6 is positioned by the guide groove 14 so that it correctly faces the center of the through hole 5. As shown in Figure 3,
The seam 13 now passes through the center of the stitching material 7, and the appearance is extremely improved. Furthermore, since the sewing machine is correctly positioned toward the center of the through hole 5, it is possible to sew fine patterns with a large angle of change of direction.

<<Effects of the invention>> As described above, the needle of the automatic needle sewing machine according to this invention has a needle material guide groove at the lower end of the through hole through which the sewing needle moves up and down, at a position opposite to the needle material insertion hole. Because of this, the position of the pricking material near the sewing needle can be positioned at the correct position directly below the sewing needle, so that the center of the pricking material can always be sewn. This improves the appearance of the product, eliminates defective products, and allows for even finer patterns to be embroidered.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a nipple showing an embodiment of this invention, Figure 2 is a bottom view of the nipple shown in Figure 1, and Figure 3 is a pattern embroidered using the nipple of this invention. The plan view, Fig. 4, shows
A perspective view showing a part of the head of an automatic needle sewing machine in which the nipple according to this invention is used, FIG. 5 is a perspective view showing a conventional nipple, and FIG. 6 is a bottom view of the nipple shown in FIG. FIG. 7 is a plan view showing a pattern embroidered using the nipples shown in FIG. 5. 3...Nipple, 5...Through hole, 5a...Lower end, 6...Sewing needle, 7...Stitching material, 8...Stitching material insertion hole, 10...Fabric, 11...Stitching frame , 13... seams.

Claims (1)

[Scope of utility model registration request] In the nipple of an automatic sewing machine, which has a through hole through which a sewing needle moves up and down, and a sewing material insertion hole whose lower end communicates with the through hole, the sewing material insertion hole at the lower end of the through hole and the sewing material insertion hole is an automatic embroidery sewing machine characterized by having a embroidery material guide groove provided at the opposite position.