JPS6113539Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to leather having a stitch pattern. To explain in more detail, the leather is cut into a product shape, and the upper threads are inserted through multiple sewing machine needles arranged in parallel. Therefore, the present invention relates to leather having a stitch pattern in which a desired stitch pattern is continuously formed in the sewing direction.

Leather is used for bags and bags such as handbags and shoulder bags. The added value of the product is increased by engraving patterns, etc. on the surface of this leather by embossing, or by adding color and luster to it, and stitch patterns are also often used as a means to increase the added value of this type of leather. has been done. However, in conventional stitch patterns, at most two needle threads and one bobbin thread are used to sew at the same time using a sewing machine, and the distance between the two sewing machine needles with two needle threads respectively attached is limited. Because of the relationship with the bobbin thread, it is not possible to make the stitch pattern wider, and when forming a stitch pattern with two or more needle threads, the needle threads must be sewn one by one or two at a time, and multiple The needle threads were misaligned or bent, making it impossible to obtain accurate and beautiful stitch patterns. Furthermore, conventional stitch patterns are flat band-like patterns, which have limitations in increasing the added value of leather. Furthermore, Japanese Utility Model Publication No. 56-811 discloses a handbag in which two needle threads are used and an embossed pattern is formed by polymerizing a resilient material such as a sponge on the back side of a flexible material. The pattern is bulged out by a resilient material such as a sponge, and is noticeably soft, so it is easily crushed and deformed from the outside, and cannot be applied to relatively hard leather at all. In addition, since a soft material is used on the front side and elastic material is polymerized on the back side, the work is complicated, and there is a risk that the fabric may be twisted or distorted due to misalignment or tensile force between the front and back sides, giving it a solid and luxurious feel. It was something that could not be obtained.

The purpose of the present invention is to easily and quickly obtain stitch patterns with accurate and beautiful spacing using at least two or more preferably four needle threads, and to reduce the spacing between both ends of a plurality of needle threads in a stitch pattern. The purpose of this invention is to provide leather with a thick and luxurious stitch pattern in which relatively hard ridges are formed on the leather part where the stitch pattern is widely formed, and this will become clear from the detailed description below with reference to the drawings. Will.

1 to 3 each schematically show an embodiment of the leather having a stitch pattern according to the present invention, in which the leather body 1 is cut into the surface shape of a bag such as a shoulder bag or a handbag. It is not necessary to use a soft leather body 1. For example, four stitch patterns 2, 3, 4, and 5 are sewn on this leather body 1, and these stitch patterns 2, 3, 4, and 5 draw flowing curves with large and small curvatures. It is formed by

Since stitch patterns 2 to 5 have the same configuration, stitch pattern 2 will be explained below. As shown in FIGS. 2 and 3, this stitch pattern 2 is about 2
It is composed of four upper threads 6, 7, 8, and 9 sewn in parallel at intervals of mm, and one lower thread 10. Of the needle threads 6, 7, 8, and 9 inserted through the plurality of sewing machine needles, in this embodiment, the needle threads 6, 9 located on both sides are threaded by the bobbin thread 10 on the back side of the leather body 1. A raised portion 11 is formed in a portion of the leather body 1 where the stitch pattern 2 is formed by being pulled inward. That is, as shown in FIG. 3, when sewing is carried out from the front side (lower part) of the leather body 1 toward the center, the bobbin thread 10 is entangled in the loop formed by each needle thread 6 to 9. However, the lower thread 10 is the upper thread 6~
9, the upper threads 6, 7, 8, 9 are entwined in this order, and the upper threads 6, 9 at both ends are strongly pulled inward by the lower thread 10, so that the part of the leather body 1 between the upper threads 6, 9, That is, the raised portion 11 is formed in the area where the stitch pattern 2 is formed.
is formed.

4 and 5 each show an outline of the manufacturing process of the stitch pattern according to the present invention, and reference numerals 12 in the figures indicate the positions on the leather body 1 where the stitch pattern 2 is to be formed. This is a pedestal, and this pedestal 1
The leather body 1 is placed on the leather body 1, and the front side of the leather body 1 is pressed down by a pair of pressers 13 and 14, and the stitch pattern 2 is
A curved surface is formed in advance at the position where the curved surface is to be formed. Depending on the material of the leather body 1, the pedestal 12 and presser part 1 may be
3 and 14, but if the leather main body 1 is relatively hard, if a curved surface is formed by the pressing parts 13 and 14, the raised part 11 can be easily formed, and the leather main body 1 There is no risk of damaging the
A detailed explanation of the sewing machine body, the needle cover for fixing the sewing machine needle, etc. will be omitted. Furthermore, the pedestal 12 is naturally not disposed at a position where the sewing machine needle operates.

Upper threads 6, 7,
Insert 8 and 9. The tips of the sewing machine needles 16 to 19 are attached to the needle cover so as to draw a curved surface, and in this embodiment, the lower ends of the sewing machine needles 16, 19, 17, and 18 protrude downward in this order, and the tips are arranged so as to draw an arc shape. ing. These sewing machine needles 16 to 19 are configured to repeatedly move up and down by a drive mechanism (not shown).

Therefore, the sewing machine needles 16 to 19 descend in the order of sewing machine needles 16, 19, 17, and 18 with respect to the horizontal plane with a time lag, and pierce the leather body 1 at the same time or with a time lag. The bobbin thread 10 is passed through the upper thread 6 by the hook 20 provided on the back side of the leather body 1.
-9 to upper threads 6, 7, 8, and 9 in this order.
At this time, the upper threads 6 and 9 at both ends are sufficiently pulled inward, and are shown in FIG. 3 as larger loops than the upper threads 7 and 8.

In this way, the upper threads 6 and 9 located at both ends are pulled inward by the lower thread 10, and the seams are sequentially tightened along the curved surface of the leather body 1 formed in advance, so that the raised portion 11 are sequentially formed along with the formation of stitch pattern 2. In addition, in the case of a relatively soft leather body 1 even if the leather body 1 is not pressed by the pressing members 13 and 14 to form a curved surface, the upper threads 6 to 9 are
If it is pulled by the bobbin thread 10 in the manner described above, the raised portion 11 can be easily formed by the tensile force. Furthermore, although four needle threads were used in this embodiment, three or more needle threads may be used.

After forming the stitch pattern 2, if surface treatment is further performed, a product with excellent gloss, depth, and a luxurious feel can be obtained.

The above is the structure of one embodiment of the leather having a stitch pattern according to the present invention. According to this structure, a stitch pattern can be formed accurately and beautifully using at least three needle threads, Moreover, it is possible to form large ridges in the area where the stitch pattern is formed, making it possible to easily obtain a three-dimensional, wide band-like pattern.
To obtain leather products with high commercial value that have a profound and luxurious feel that is incomparable to patterns formed using soft materials and elastic materials such as sponge, and that provide a new decorative feeling. I can do it.

[Brief explanation of the drawing]

1 to 3 schematically show an embodiment of the leather having a stitch pattern according to the present invention, in which FIG. 1 is a front view, FIG. 2 is an enlarged front explanatory view of the stitch pattern, and FIG. Figures 4 and 5 show an example of the manufacturing process of the stitch pattern, Figure 4 is a cross-sectional view of the leather body with a curved surface formed, and Figure 5 is a cross-sectional view of the leather body with a curved surface formed. FIG. 3 is an explanatory cross-sectional view showing the position and attachment state of a sewing machine needle. In the figure, 1... Leather body, 2, 3, 4, 5... Stitch pattern, 6, 7, 8, 9... Upper thread, 10... Lower thread, 11... Raised portion, 16, 17, 18 ,19...
...Sewing machine needle, 20...scythe.

Claims (1)

[Claims for Utility Model Registration] (1) A desired stitch pattern is created continuously in the sewing direction on the surface of the leather cut into the shape of the product by needle threads inserted through multiple sewing machine needles arranged in parallel. In leather having a stitch pattern formed on the leather, the stitch pattern is formed when at least the upper threads located on both sides of the upper threads inserted through at least three or more sewing machine needles are connected to the lower thread on the back side of the leather. 1. Leather having a stitch pattern, characterized in that the leather is pulled inward and a raised portion is formed in the portion of the leather on which the stitch pattern is formed. (2) The leather having a stitch pattern according to claim 1, wherein the stitch pattern is formed by four needle threads.