JPS6345258Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a device for folding and rationally sewing the edges of fabric in triple folds during pull-down or hem stitching.

(Prior Art) Conventionally, there are various devices that fold and sew the edges of the fabric in triple folds during pull-down or hem stitching, but all of them have complicated mechanisms or are difficult to sew the required folded fabric. It was difficult to sew with a stable width, and no improvement in efficiency could be expected.

(Example) 1 is a sewing machine such as an overlock sewing machine,
2 is the sewing machine needle, 3 is the presser foot, 4 is the body fabric, and when performing top stitch 5A or hem stitch 5B, usually the first
As shown in Fig. 2, the sides of the fabric are folded in three layers, and the side edges 4A of the fabric are partially cut off using a known cutter, and a top stitch 5A is applied to the cylindrical or flat body fabric 4.
Alternatively, hem hem stitching 5B is performed.

Note that a loop-shaped or long rubber string 6 may be inserted into the triple-folded portion 4B of the body fabric 4 and sewn.

In the present invention, in the above-mentioned sewing means, the fabric side edge 4A
7 is a sewing surface, and 8 is an L-shaped rotating member provided on the sewing surface 7 so as to be able to rotate vertically. are integrally fixed in a bifurcated shape, and 11 is a substantially L-shaped bending plate provided on the fixed piece 9 so as to be freely rotatable in the vertical direction. is provided so as to be located on the lower surface (back surface) of the support plate 10, and 12 and 13 are columns fixed to the fixed piece 9 and the bending plate 11, respectively, and an air cylinder 14 is rotatably provided on the column 12. , and a piston 15 is rotatably provided on the support column 13.
Numeral 16 is a support provided on the sewing surface 7. An air cylinder 17 is rotatably provided on the support 16, and a piston 18 is rotatably provided on the rotating member 8.
19, 19 are rotatable rollers provided on both sides of the sewing machine, respectively.

Therefore, for example, the case where the fabric side edge 4A of the cylindrical body fabric 4 is folded three times, and the ring-shaped rubber string 6 is inserted into the folded part 4B to apply the top stitch 5A will be explained. As shown in the figure, first, the rotating member 8 and the bending plate 11 are placed in the raised position through the operation of the air cylinders 14 and 17, respectively, and the ring-shaped rubber string 6 is attached to the supporting plate 10 and the rollers 19 and 1.
9... as shown in FIG. 9, and then insert the fabric side edge 4A of the cylindrical body fabric 4 between the fixing piece 9 and the support plate 10 and hang it over the rollers 19, 19..., and then As shown in Fig. 7, air cylinder 14
Rotate the bending plate 11 downward through the operation of
The bending plate 11 is positioned on the back surface of the support plate 10, and the fabric side edge 4A of the cylindrical body fabric 4 is folded in half.

Next, as shown in FIG. 8, the rotating member 8 is rotated down onto the sewing surface 7 through the operation of the air cylinder 17, so that the side edges of the fabric are folded into three folds.

Next, as shown in FIGS. 9 and 10, a top stitch 5A is applied with the looped rubber cord 6 inserted into the bent portion 4B of the cylindrical body material 4 by conventional means.

When the sewing is completed, the rotating member 18 returns to its original position, then the bending plate 11 returns, and the above-mentioned operations are repeated.

(Effects) Through the supporting plate 10 provided on the L-shaped rotating member 8 and the rotatable bending plate 11, the edge of the fabric can be reliably folded into three folds, and the folding width of the fabric can be reduced. Top stitching 5A or hem stitching 5B can be efficiently performed in a stable state.

In addition, the device is simplified and the fabric can be attached easily, especially when performing the top stitch 5A with the ring-shaped rubber string 6 inserted into the triple folded part 4B of the cylindrical body fabric 4. It is suitable for

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view for explaining sewing, Fig. 2 is a sectional view for explaining sewing of top stitching or hem stitching, and Fig. 3 is a cross-sectional view for explaining sewing at the edge of the fabric. A sectional view for explaining sewing in which top stitching is performed with the ring-shaped rubber string 6 inserted into the triple folded part, FIG. 4 is a perspective view for explaining the entire device, and FIG. 5 is an explanation of the operation of FIG. 4. Figure 6, Figure 7 and Figure 8 are a front sectional view, Figure 9 and Figure 1 respectively for explaining the operation when folding the edges of the fabric.
Figure 0 is a side sectional view and a front sectional view for explaining sewing of top stitching and hem stitching, respectively. 4...Body fabric, 6...Rubber string, 8...Rotating member, 10...Supporting member, 11...Bending plate.

Claims (1)

[Scope of utility model registration request] A fixing piece 9 and a support plate 10 are integrally fixed in a bifurcated manner to a rotating member 8 which is provided on the sewing surface 7 at the rear of the presser foot of the sewing machine so as to be able to rotate freely in the vertical direction. An L-shaped bending plate 11 is provided so as to be freely rotatable in the vertical direction, and is provided so that when the bending plate 11 rotates downward, the plate 11 is located on the lower surface of the support plate 10, and A fabric sewing device characterized in that the fabric edge is folded three times through a member 8 and a bending plate 11, and a top stitch or hem stitch is applied to the fabric edge.