JPH04240477A - Holder for cycle sewing machine - Google Patents

Abstract

PURPOSE:To easily set holders by disposing two holders on both sides of a zigzag seam forming line, providing the holders contiguously to a holder driving means to be individually vertically moved and moving independently vertically the holders respectively by the operation of two holder switches. CONSTITUTION:In sewing a zigzag seam 9, an arm part 21 of a sewing machine is put into a bag section between left surface cloths of a left lower fold 1B and set to an intended zigzag seam 9 sewing part to fold back the end 4a of rear cloth 4 to the left with the seam as a center. Also the left lower fold 1B, the left side fold 1A and a lower plate 22 are located relative to each other and a left holder switch is turned on to shift downward a left holder 23b. Next, the rear cloth 4 placed on the left lower fold 1B and left side fold 1A is located and a right holder switch is turned on to shift downward a right holder 23a for holding the rear cloth 4. A sewing machine starting switch 29 is turned on so that a feeding means is shifted at every stitch in the direction of X-Y according to sewing data to form the zigzag seam 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cycle sewing machine for sewing zigzag stitches on slits in skirts and the like.

0002

2. Description of the Related Art FIG. 10 shows the back side of a slit formed at the lower end of a skirt. This slit sewing procedure is to stack the right outer material 2 on the left outer material 1, sew seam 3 at the upper end of the slit of the left side fold 1A, right outer material 2, and right side fold 2A, and then sew the seam 3 on the left outer material 1.
and the right outer material 2 are sewn together to form a slit. Next,
Layer the lining 4, fold 1A on the left side, stitch 5 on the lining 4, fold 1A on the left side, right outer fabric 2, fold the right side 2A, and stitch 6 on the lining 4.
, sew a seam 7 on the right side fold 2A and the lining 4, and sew the lining 4 into the slit. Next, stitch 8 on the lower left fold 1B and left side fold 1A, stitch 9 on the lining 4, lower left fold 1B and left side fold 1A, stitch 10 on the lower right fold 2B and right side fold 2A, lining 4, lower right fold 2B and right side fold. 2A seam 1
1 was used to stop each edge of the cloth.

[0003] However, when sewing seams 8 to 11 so that no seams appear on the surface of outer fabrics 1 and 2, the fabric is bag-shaped and the fold length of the left and right outer fabrics is short. It was difficult to align the ends and set it on the presser foot of the sewing machine. For this reason, in the past, the production was carried out by hand, resulting in extremely poor production efficiency.

0004

[Problem to be solved by the invention] The problem to be solved is that even if the fabric is bag-shaped and the left and right outer fabrics have a short folded length, the edge of the fabric should be aligned with the sewing machine and the presser foot of the sewing machine should be used. The point is to make it easier to set up.

[0005]

[Means for Solving the Problems] The present invention provides a cycle sewing machine in which two presser feet are arranged on both sides of a zigzag stitch forming line, and are connected to a presser foot drive means to be able to move up and down exceptionally. The presser foot can be moved up and down independently using a switch.

[0006]

[Operation] Even if the sewing product is bag-shaped and has a short folding length,
Since one of the two pressers can be aligned and supported, it is easier to set it on the presser foot.

[0007]

Embodiment FIG. 1 is a perspective view of an embodiment of the apparatus of the present invention, in which a cycle sewing machine 20 has a cylindrical arm portion 21, and a lower plate on which a sewing material is placed is placed on the arm portion 21. 22
A presser foot 23 that presses the dough placed on the lower plate 22
Place. The lower plate 22 and the presser foot 23 are connected to the feed support section 24.
This feed support portion 24 is integrally supported by
It can be moved in X-Y directions by a motor, a Y motor (feeding means) 27.

This cycle sewing machine 20 rotates the lower plate 22 and the presser foot 23 for each stitch formed by a stitch forming mechanism including a needle 25 according to pre-stored sewing data.
-Y movement forms a predetermined seam. As the sewing data, zigzag stitch data consisting of a predetermined number of stitches and zigzag feed data is stored. The presser foot 23 is
Two presser feet 23a are arranged in a straight line and are longer than the zigzag stitch length so as to press both sides of the zigzag stitch formation line, and each presser foot 23a,
23b is supported by the feed support part 24 so as to be able to move up and down independently (FIG. 9), and connecting links 26c, It is possible to move up and down exceptionally through 26d. A presser drive means 26 is formed by the left and right cylinders 26a, 26b and the connecting links 26c, 26d.

FIG. 2 shows a foot switch, 28a is a right presser switch, 28b is a left presser switch, and the left and right presser switches 28a and 28b form a presser switch. 29 is a start switch for commanding the start of the sewing machine. FIG. 3 shows a block diagram of this embodiment, and 3
0a is a right solenoid valve, 30b is a left solenoid valve, 31 is a sewing machine motor, 33 is a CPU, 34 is a ROM that stores control data for the sewing machine and presser foot, and 35 is an RA that stores sewing data.
M, and a control means is formed by the control data shown in FIG. 4 stored in the CPU 33 and ROM 34.

FIG. 4 shows an operation flowchart of this embodiment, and the case where the zigzag stitch 8 shown in FIG. 5 is sewn will be explained. Note that the symbols 1 to 11 given in FIGS. 5 to 8 are the same as the names of the symbols given in FIG. 10, and the explanation thereof will be omitted. Furthermore, the cloth edge of the lining 4 is indicated by a dashed line for convenience. First, figure 1 for left outer material 1, right outer material 2, and lining material 4.
As shown in 0, sew seam 3 and seams 5 to 7,
Form a slit. The arm part 21 of the sewing machine is put into the bag part between the lower left fold 1B and the left outer material 1, aligned with the part to be sewn with the zigzag stitch 8, and the end 4a of the lining 4 is folded back to the right around the seam 5.

When the left lower fold 1B is aligned with the lower plate 22 and the left presser switch 28b is turned on (step 1
), the left presser foot 23b in the upper position is moved downward by the left cylinder 25b and holds the lower left fold 1B (FIG. 9) (steps 2 and 3). To correct the position of the lower left fold 1B, turn on the left presser switch 28b again, and turn it off again to turn the left presser switch 28b on.
3b rises and falls (step 4).

When the left fold 1A stacked on the lower left fold 1B is aligned with the lower plate 22 and the right presser switch 28a is turned on (step 5), the right presser 23a in the upper position is
is moved downward by the right cylinder 25a and folds to the left 1A.
(Steps 6 and 7). If the position of the left fold 1A is to be corrected, the right presser switch 28a is turned on and off again, and the left presser 23a is raised and lowered (step 8).

When the sewing machine start switch 29 is turned on (step 9), the upper position of the presser foot 23 is the initial position, and the left and right presser feet 23a, 2 are determined from the vertical movement of the presser foot.
3b is in the lower position (step 10), the sewing machine starts, and the feeding means is driven in the X-Y direction for each stitch according to the stitch data to form the zigzag stitch 8. Even if the sewing machine start switch 29 is turned on by mistake when the left and right presser feet 23a and 23b are not in the lower position, the sewing machine will not start.

Next, the case of sewing the zigzag stitch 9 shown in FIG. 6 will be explained. The arm part 21 of the sewing machine is put into the bag part between the lower left fold 1B and the left outer material 1, and it is aligned with the part where the zigzag stitch 9 is to be sewn, and the end 4a of the lining material 4 is folded back to the left around the seam 5. Lower left fold 1B and left fold 1A
to the lower plate 22, and press the left presser switch 28.
When b is turned on (step 1), the left presser foot 23b moves downward (steps 2 and 3).

When the lining 4 to be stacked on the lower left fold 1B and the left fold 1A is aligned and the right presser switch 28a is turned on (step 5), the right presser 23a moves downward and holds the lining 4. (Steps 6 and 7). When the sewing machine start switch 29 is turned on (step 9), if the left and right presser feet 23a, 23b are in the lower position (step 10)
The sewing machine is started, and the feeding means is driven in the X-Y direction for each stitch according to the stitch data to form the zigzag stitch 9.

Next, the case of sewing the zigzag stitch 10 shown in FIG. 7 will be explained. The arm part 21 of the sewing machine is put into the bag part between the lower right fold 2B and the right outer material 2, and is aligned with the part to be sewn with the zigzag stitch 10, and the end 4b of the lining material 4 is folded back to the right around the seam 7. Since the lower right fold 2B is lower than the right fold 2A, the right presser switch 2 is moved so that the right presser 23a is lowered first, contrary to the case of the seam 8.
Turn on 8a (steps 5-8). Thereafter, the right side fold 2A is positioned, the left presser switch 28b is turned on, and the left presser 23b is lowered (steps 1 to 4). When the sewing machine start switch 29 is turned on, the left and right presser feet 23a, 2
The sewing machine starts when 3b is in the lower position (step 9,
10) A staggered seam 10 is formed.

Next, the case of sewing the zigzag stitch 11 shown in FIG. 8 will be explained. The arm part 21 of the sewing machine is put into the bag part between the lower right fold 2B and the right outer material 2, and is aligned with the part where the zigzag stitch 11 is to be sewn, and the end 4b of the lining 4 is returned to the left with the seam 7 as the center. Bottom right fold 2B and right side fold 2
Since A is below the lining 4, turn on the right presser switch 28a to lower the right presser 23a first, contrary to the case of the seam 9, to support the lower right fold 2B and the right fold 2A ( Steps 5-8). After that, the lining 4 is positioned, the left presser switch 28b is turned on, and the left presser 23b is lowered to support the lining 4 (steps 1 to 4).
. When the sewing machine start switch 29 is turned on, the sewing machine starts (steps 9 and 10) and the zigzag stitch 11 is formed when the left and right presser feet 23a and 23b are in the lower position.

[0018]

[Effects of the Invention] In the present invention, two presser feet are arranged on both sides of the zigzag stitch forming line, and are connected to a presser foot driving means so that they can be moved up and down, and two presser foot switches are used to independently move the presser foot. Since it can move up and down, even if the fabric is bag-shaped and has a short folding length, the lower fabric of the two pressers can be aligned and held first, and the upper fabric can be held by the other. This has the effect of making it easier to set it on the presser foot because it can be aligned and held later with the presser foot.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a cycle sewing machine showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a foot switch.

FIG. 3 is a block diagram of this embodiment.

FIG. 4 is an operation flowchart of this embodiment.

FIG. 5 is a diagram showing that a zigzag seam 8 is formed in the slit portion.

FIG. 6 is a diagram showing how a zigzag seam 9 is formed in the slit portion.

FIG. 7 is a diagram showing how a zigzag seam 10 is formed in the slit portion.

FIG. 8 is a diagram showing how a zigzag seam 11 is formed in the slit portion.

FIG. 9 is a diagram showing the left presser being lowered to form a zigzag stitch 8.

FIG. 10 is a diagram showing the sewing of the slit portion on the back of the skirt.

[Explanation of symbols]

1 Left outer material 2 Right outer material 4 Lining 21 Arm part 22 Lower plate 23 Presser foot 23a Right presser foot 23b Left presser foot 27 Feeding means

Claims (1)

[Claims] 1. A cycle sewing machine in which a lower plate placed on a cylindrical arm and a presser foot that moves up and down on the lower plate are moved in X-Y direction for each stitch by a feeding means to form a zigzag stitch. , two presser feet arranged on both sides of the zigzag seam forming line and connected to a presser foot drive means to be able to move up and down exceptionally, and two presser switches corresponding to the presser feet;
A presser foot device for a cycle sewing machine, comprising: a start switch for instructing the start of the sewing machine; and a control means for moving the presser foot up and down, respectively, relative to the presser foot drive means according to commands from the two presser foot switches. .