JPS6135184Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an auxiliary device for a sewing machine for sewing pleated pin tucks formed on the surface of a blouse or the like.

For design and decoration considerations, a large number of fold-like pin tucks are formed in parallel to each other on the chest area of a blouse. To form this pin tuck, a part of the fabric is folded back to form an Ω-shaped folded part, and the bottom part of this folded part is sewn. Since this was done by hand, there was a problem in that the finish of the pintack was greatly influenced by the skill level of the individual worker. Also,
Usually, a large number of pin tucks are formed parallel to each other, and the height of each pin tuck and
Even for experienced users, it is often difficult to align the intervals between numerous pin tucks as specified.

This idea was made in view of the above circumstances,
To easily and quickly sew a large number of pin tucks of uniform height and uniform spacing by comprising a substrate around which the fabric is wrapped, a strap that guides the fabric, and an air nozzle that aligns the fabric with the substrate. The purpose is to provide an auxiliary device for sewing machines that can.

This invention will be explained below with reference to the drawings.

Figures 1 to 4 show an embodiment of this invention, in which 1 is a sewing machine arm, 2 is a sewing machine bed, and 3 is a sliding plate. A work plate 4, which serves as an extension of the sewing machine bed 2, is provided surrounding the sewing machine bed 2. On top of the work plate 4, there is a long plate-shaped substrate 5 whose tip side 5a is positioned on the sliding plate 3 on the front side of the sewing machine needle 6 in the fabric feeding direction A. It is supported by a base 7 in alignment with the fabric feeding direction A. The board 5 is a long board top board 5A.
and a long lower board 5B bonded to the center of the lower surface of the upper board 5A.
is thicker, has a shorter width, and has a shorter overall length than the upper board 5A. In addition, the lower board 5B
The tip of the sewing machine needle 6 side is the tip side 5 of the top board 5A.
It is located in front of point a (on the right side of Figure 2),
The rear end of the lower board 5B on the side opposite to the sewing machine needle 6 side is aligned with the rear end of the upper board 5A, and this lower board 5B
The rear end of is fixed to the base 7. On the side of the base 7 on the side of the sewing machine arm 1 is a lower board 5B.
A turnbuckle 8 is attached to support the substrate 5, and this turnbuckle 8
The substrate 5 is supported so as to be above the sewing machine bed 2. Note that the base plate 5 is provided so that the sewing machine needle 6 is located at a distance H away from the end of the front end side 5a on the side of the sewing machine arm 5.

Further, a support piece 9 is attached to the side surface of the base 7 opposite to the side on which the turnbuckle 8 is attached. A strap 10 is supported at the center of the tip side 5a of the substrate 5, slightly in front of the sewing machine needle 6 (on the right side in FIG. 2), and with its tip 10a positioned ahead of the substrate 5. This belt 10
The tip 10a of the tip 10a is tilted as shown in FIG. 4 with the sewing machine needle 6 side of the tip 10a facing upward from the opposite side, and as shown in FIG. When looking at the tip 10a of the strap 10, there is a gap L between the end of the tip 10a of the strap 10 on the opposite side to the sewing machine needle 6 and the sewing machine needle 6. Furthermore, the tip 1 of the band 10
A connecting piece 10b is formed protruding from 0a, and the tip of this connecting piece 10b is connected to a support shaft 12 that supports a pusher 11.
The tip 10a of the strap 10 moves up and down in synchronization with the up and down movement of the presser foot 11. The band 10 is arranged so that its tip 10a is separated from the long side 5c of the board top plate 5A on the side near the center in the longitudinal direction of the sewing machine arm 2 (the right side in FIG. 1), and its rear end 10c is placed away from the long side 5c. 5c on the substrate 5. Also, 13 in the figure
is a mounting shaft supported by the sewing machine arm 1 in parallel with the support shaft 12, and on this mounting shaft 13, a support portion 14a at the tip is positioned on the side opposite to the sewing machine needle 6 side of the tip 10a of the strap 10. A supporting piece 14 is movably attached along the mounting shaft 13, and the supporting part 14a can approach and move away from the tip 10a of the band 10 along the direction perpendicular to the fabric feeding direction A. .

On the other hand, on the workbench 4 on the side of the tip of the substrate 5, each injection port 15a, 16a is directed toward the tip of the long side 5c of the substrate 5, and each injection port 15a,
Air nozzles 15 and 16, with 16a positioned below the tip of the substrate 5 (lower in FIG. 2), are provided at a predetermined distance from each other.

By the way, what is shown at 17 in FIG. 4 is a fabric on which one pintuck 17a is formed. This fabric 17 is wrapped around the long side 5c of the substrate 5 with the pin tuck 17a facing upward.At this time, a folded portion 17b of the fabric 17 is formed on the long side 5c of the substrate 5, and the folded portion 17b is formed below the folded portion 17. The air nozzles 15 and 16 spray air onto the fabric 17 on the back side of the substrate 5 to cause the fabric 17 to lie along the back side of the substrate 5.

In the figure, reference numeral 20 denotes a magnet attached to the central portion of the metal band 10 in the length direction, and this magnet 20 stabilizes the metal band 10 by bringing the metal band 10 into contact with the upper surface of the substrate 5.

By the way, in order to form a plurality of pin tucks on the fabric, first, one pin tuck 17a is formed on the fabric 12 in a conventional manner. Next, the fabric 17 is wrapped around the substrate 5 so as to form a folded portion 17b of the fabric 17 on the long side 5c side of the substrate 5, and the end of the pin tuck 17a on the band tip 10a side is connected to the tip 10a of the band 10 and the support piece. The sewing machine needle 6 is actuated by ejecting air from the injection ports 15a and 16a of the air nozzles 15 and 16. When the fabric 17 is fed in the direction A in this state, the pin tuck 17a of the fabric 17 moves while being held between the tip 10a of the strap and the support piece 14, so the sewing machine needle 6 always moves the fabric 17 away from the pin tuck 17a by the distance L. Pass the thread through part of 17 and sew. Furthermore, air nozzle 1
5 and 16, the fabric 17 on the back side of the board 5 is pulled in the direction of the air jet in an attempt to align the fabric 17 with the back side of the board 5, but the pin tuck 17a of the fabric 17 is caught by the tip 10a of the strap or is caused by the movement of the fabric 17. In order to prevent
closely followed. Therefore, the folded portion 17b of the fabric 17 has a pin tuck 17a spaced apart from it by a distance L.
A new pintuck of height H can be formed parallel to pintuck 17a.

Then, when the fabric 17 passes through the sewing machine needle 6,
Move the newly formed pintack to pintack 17 above.
Set it in the same position as above and repeat the same operation as above to form a new pin tack again.

By repeating the above operations, a large number of pin tucks parallel to pin tuck 17 can be formed.

By the way, the pintack of the fabric 17 wound around the substrate 5 is guided by the strap 10, and the strap 10 moves away from the sewing machine needle 6 as it moves toward the tip on the substrate 5 as shown in FIG. Because they are tilted away from each other, when the pin tack moves from the support piece 9 side to the sewing machine needle 6 side, the strap 1 initially
Even if 0 and the pintuck are far apart, the pintuck gradually approaches the strap 10 as it moves toward the tip 10a of the strap 10, and is guided by the strap 10 on the tip side. In other words, the pin tuck 17a is connected to the strap 10.
By repeating the operation of feeding the fabric in the feeding direction A, it is possible to easily form a large number of pin tucks with uniform height and equal mutual spacing.

As explained above, this invention consists of a substrate that is supported on the sewing machine bed with the tip side positioned in front of the sewing machine needle and on which the fabric is wound, and a substrate that is positioned next to the sewing machine needle with a predetermined distance from the sewing machine needle. A band is provided to guide the fabric along the pintuck of the fabric, and a spout is provided on the side of the tip of the substrate on the side where the fabric is folded back against the substrate, with an injection port positioned below the substrate. Since the device is composed of an air nozzle that uses air to guide the fabric along the substrate, the fabric can be tightly aligned with the tip of the substrate using the air jet from the air nozzle, and the fabric can be tightened. It is possible to sew the folded portion of the fabric at a predetermined distance from the tip of the tuck, thereby forming pin tucks with uniform height and regular intervals.
Furthermore, according to this invention, pin-tucks can be formed by simply moving the fabric along the substrate and strap, so no skill is required to form pin-tucks, and moreover, pin-tucks can be formed much faster than before. It has excellent effects such as improved work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of this invention, Fig. 2 is a side view of the embodiment, Fig. 3 is a cross-sectional view of the substrate of the embodiment, and Fig. 4 is an arrow in the direction of B in Fig. 1. A schematic perspective view, and FIG. 5 is a side view of the fabric sewn according to the same embodiment. 2... Sewing machine bed, 5... Board, 5a... Tip side, 6... Sewing machine needle, 7... Base, 10... Band, 10a... Tip, 15, 16... Air nozzle, 15a, 16a ...Injection port, 17...Fabric,
17a...Pin tuck, 17b...Folding part,
A...Fabric feed direction, L...Space.

Claims (1)

[Scope of utility model registration request] A substrate on which the fabric is wound, the tip side of which is positioned in front of the sewing machine needle in the fabric feeding direction and supported by the base on the sewing machine bed and its extension surface to form a pin tuck, and A belt whose tip is positioned on the side of the sewing machine needle with a predetermined distance from the sewing machine needle, and is provided on the substrate along the fabric feeding direction, and guides the fabric in the fabric feeding direction by aligning the pintack of the fabric. Each injection port is positioned below the substrate on the side of the tip of the substrate on the folded portion side of the fabric, and the fabric below the substrate is sprayed with air blown from the injection ports. An auxiliary device for a sewing machine characterized by comprising an air nozzle that is placed along the back side of a substrate.