JPS6130631Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sewing jig used in sewing factories and the like to perform sewing operations such as forming various pockets such as welt pockets, sewing darts, and attaching loops.

Generally, a bead pocket having one or both bead edges is formed as follows. First, position two pieces of opening cloth on the front side of the fabric, either stacking them in the same direction or facing each other with an appropriate distance between them, and attach them by sewing their edges. At this time, one or both edges of the opening cloth are folded in to form a loop when sewing. Next, make a notch in the fabric between the sewn parts of the opening cloth to form the opening for the pocket, then push the two attached opening cloths through the notch to the back of the fabric and sew the corners on both sides. to secure the opening cloth. As a result, the loop becomes a bead, so that a bead pocket can be formed.

However, even when first positioning the opening cloth, or when folding the edge of the opening cloth to form a loop that will become the beading, even if you draw a positioning line on the fabric with a tool, etc. Both of these steps had to be carried out based on the sewist's intuition, and it was extremely difficult to accurately position the opening cloth and perform the sewing process. Moreover, even when sewing, there are cases where the sewing machine cannot sew the fabric straight, making it impossible to attach the two opening fabrics parallel to each other at appropriate intervals, and because the fabric is fed at high speed by the sewing machine, the sewing machine may not be able to sew the fabric straight. There was a problem where the machine could not accurately sew just the width of the machine, causing it to sew. As a result, the opening fabric inevitably bends or shifts, making the formed pockets wrinkled and easily scratched. Therefore, it is difficult to form such beaded pockets, especially the beaded edges, unless you are a very skilled person. It was possible. In addition, similar inconveniences occur not only with beaded pockets but also with lidded pockets and box pockets.

On the other hand, sewing operations such as dart stitching and loop sewing require considerable skill to accurately and quickly sew pieces of fabric to each other at a constant width. Eliminating the inconvenience caused by the work was an important issue.

This invention allows anyone to easily and accurately attach the opening cloth to the fabric by sewing a sewing machine, making it possible to easily form various pockets such as beaded pockets, as well as sewing darts and loops. This makes it possible to perform simple straight-line stitching in a predetermined width extremely accurately and easily.

Next, this invention will be explained with reference to illustrated embodiments.

The jig according to the illustrated embodiment has two sewing elements 1 having corresponding shapes, which are arranged parallel to each other by being held at both ends by a frame member 2 having a substantially U-shaped cross section. One sewing element 1 is fixed to the frame member 2 by tightening a screw 3 and a threaded pin 4 with nuts from the back side, while the other element 1 passes through a slot 2a formed on the frame member 2. It is adjustable by tightening the screw 5 and threaded pin 6 from the back side. Each sewing element 1 consists of a base plate 7 attached to the frame member 2 and a presser plate 8 attached to the base plate 7 so as to be openable and closable. A slot 8a for receiving the attached pins 4 and 6 is formed. Each holding plate 8 is a substrate 7
The board 7 is attached to the mounting piece 9 fixed to the board 7 via the height adjustment member 10 and the hinge 11 by aligning the longitudinal edges on both sides of the holding plate 8 with the longitudinal edges of the board 7. It is attached in a polymerized manner.

As shown in FIG.
By screwing together with 1, the height of the presser plate 8 can be adjusted according to the thickness of the opening cloth or fabric sandwiched between the substrate 7 and the presser plate 8. The presser plate 8 includes two guide members 12 having a rectangular cross section formed along its longitudinal edges on both sides, and the guide members 12 are connected to a sewing machine jig 13 shown in FIGS. 4 and 6.
The jig 13 is engaged with the groove 13b of the sliding portion 13a provided in the jig 13, and the sewing machine needle is reciprocated through the hole 13c of the sliding portion 13a. has been done. Also, presser plate 8
is provided with two elongated positioning members 15 on which the two stop members 14 are adjustably mounted, which are arranged parallel to each other and set at the same height as the height of the guide member 12. The stop member 1
Reference numeral 4 is an L-shaped plate, which is provided as a stopper for the sewing machine jig 13 that slides on the guide member 12, and is designed to define the width of the sewing part when sewing the fabric. . This stop member 14 is tightened by a screw 16 so as to slide on the guide member 12 and the positioning member 15, and the screw 16 is the sixth
As can be seen from the figure, it passes through a slot 15a formed between each positioning member 15 and engages with a sliding member 17 arranged to cover the slot 15a (see Figure 2). ). This sliding member 17
is provided with longitudinal edges 17a having an L-shaped cross section on both sides and slidably fits into a groove provided in the positioning member 15, and when moving the stop member 14 to another position, the rear side of the positioning member 15 can be slid. can move.

The substrate 7 and the holding plate 8 are preferably made of transparent plastic plates such as acrylic plates, but may also be made of wood, metal plates, etc. In order to set the distances between the sewing elements 1 and between the stop members 14, each frame member 2 and the base plate 7 are provided with scales 18, 19, respectively. Further, on the back side of the base plate 7 and the presser plate 8, a knurling part consisting of a group of small protrusions or a non-slip member 20 (one of which is shown in FIG. 2) such as sandpaper is attached, and This is to prevent slipping. Note that the guide member 12 and the positioning member 15 may be provided integrally with the presser plate 8 or may be separate members.

An example of how to use the embodiment configured as described above to form a single welt pocket will be described.

First, the sewn part S ₁ of the upper cloth and the sewn part S ₂ of the lower cloth.
screw 5 fixing one adjustable sewing element 1 in order to determine the distance G (see FIG. 7) between
and the threaded pin 6 is loosened to move the element 1 against the frame member 2 against the other fixed sewing element 1.
and fix again with screws 5 and threaded pins 6 in accordance with the desired spacing between the sewn parts. Also, loosen the screws 16 and stop the stop members 14 of each sewing element 1.
along with the sliding member 17 on the back side of the positioning member 1
5, and fix it according to the width W of the sewn parts S ₁ and S ₂ of the opening cloth (Fig. 7), that is, the width of the pocket to be formed, and adjust the distance between each stop member in advance. .

Next, as shown in FIG. 2, after placing the fabric A on which the pocket is to be formed with its front side up, the jig according to this invention is placed at a desired position. Then, for example, as shown in the figure, the presser plate 8 of the fixed sewing element 1 is opened, the lower opening cloth B is placed on the substrate 7 with the front side facing up, the presser plate 8 is closed, and the lower opening cloth B is placed on the base plate 7. It is sandwiched and fixed between the substrate 7 and the holding plate 8. In this case, the front edge Ba of the lower opening cloth B is attached to the board 7 by the sewing margin.
and position it so that it slightly protrudes from the longitudinal edge of the presser plate 8.

Furthermore, as shown in FIG. 3, the upper opening cloth C is now sandwiched on the base plate 7 of the other adjustable sewing element 1 in the same direction as the aforementioned lower opening cloth B, with the back side facing up.
In this case, the front edge Ca of the upper opening cloth C is folded inward to a desired degree by the width of the bead to be formed, and the presser plate 8 is closed to form a loop in the upper opening cloth C. When closing each presser plate 8 to fix the lower opening cloth B and upper opening cloth C, the threaded pins 4 and 6 engage with the slot holes 8a provided on the opposite end of the board 7, so that the presser foot The plate 8 can be securely fixed to the substrate 7. In addition, since the anti-slip member 20 is provided on the back side of each substrate 7 and presser plate 8 as described above, the material A, opening cloth B,
C never shifts. In this way, the upper and lower opening cloths C,
B can be precisely positioned at a desired position relative to fabric A.

The operation of sewing the positioned upper and lower opening cloths C and B to the fabric A using a sewing machine begins with the upper opening cloth C first. To do this, the groove 13b of the sliding part 13a of the sewing machine jig 13 is fitted into the guide member 12 inside the presser plate 8 that fixes the upper opening cloth C, as shown in FIG. The sliding portion 13a may be slid between the stop members 14 while moving the entire sewing machine on the table of the sewing machine. As a result, the sewing machine needle is moved to the sliding portion 13.
In order to pass through the hole 13c of a and proceed along the inner guide member 12, a loop is formed at the front edge of the upper opening cloth C to form a welt, and the upper opening cloth C is sewn to the fabric A. Can be done. In this case, the sliding part 13 can be guided between the inner ends 14a of the stop members 14 from one side to the other, making it possible to perform straight sewing by a predetermined width of the pocket.

In addition, to attach the lower opening cloth B, turn over the upper opening cloth C that covers the lower opening cloth B, and
The jig can be operated in the same manner as for the above-mentioned upper cloth C by sliding it on the guide member 12 inside the presser plate 8 that fixes the lower cloth B, and in this way the lower cloth B can also be easily sewn onto fabric A.

Next, with the fabric A removed from the jig or fixed to the jig, a cut D is made along the center line between the sewing elements 1 as shown in FIG. 7 using a cutting tool such as a cutter or scissors. , forming the opening of the pocket.
Triangular pieces E are then formed on both sides of the cut D from the back side of the fabric A. Then, push the upper and lower opening cloths C and B into the back side of the fabric A through the cut D that was formed, and tie the triangular pieces E on both ends so as to tie both ends of the sewn parts S ₁ and S ₂ of the opening cloths B and C to each other. Sewing together both edges of fabrics B and C. As a result, the upper opening cloth C becomes the opposite cloth on the back side of the fabric A, the lower opening cloth B becomes the lining of the pocket, and the loop formed on the upper opening fabric C becomes a beveled edge on the front side of the fabric A, so that one side of the opening becomes the opposite fabric. You can complete the edge pocket.

In addition, to form both beaded pockets, use the bottom cloth B.
is positioned on the substrate so as to form a loop in the same manner as the upper cloth C, and then the upper cloth C is then positioned opposite this lower cloth B, forming a loop as well. .

In addition, when performing straight stitches such as dart stitches and loop stitches in addition to forming the various pockets described above, the guide member 12 provided on the outside of each presser plate 8 is used.
By using a sewing machine, anyone can easily and accurately sew with a constant width. In the embodiment described above, the stop member 14 is formed in an L-shape so as to act as a stopper only on the inner guide member 12.
For such a straight sewing operation, the stop member can be constructed in a T-shape, and the width of the sewing portion of the outer guide member can also be set arbitrarily.

In this way, when the jig of this invention is used to form a welt pocket, it is possible to accurately position the opening cloth at a desired position relative to the fabric when forming the welt, and it is also possible to sew the opening cloth. The width of the sections and the spacing between the sewn sections can be set arbitrarily, and the sewing machine needle can also be guided accurately, making it easy for anyone to perform the welt formation work, which was previously complicated and required skill. can. Furthermore, the jig according to this invention can be used for various sewing operations such as dart stitching, and therefore, the efficiency of sewing operations using a sewing machine and the quality of the product can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view of one embodiment of the jig according to this invention, and Fig. 2 is a perspective view showing the state in which the lower opening fabric is positioned on the jig placed on the fabric when forming a single welt pocket. 3 is a perspective view showing a state in which the upper opening cloth is positioned, and FIG. 4 is a side view of the sewing machine jig used in the above embodiment.
Figure 5 is a longitudinal cross-sectional view along the - line in Figure 1, Figure 6 is a cross-sectional view along the - line in Figure 1, and Figure 7 is a view of the opening of the pocket from the back side. It is an explanatory diagram showing a state. 1: Sewing element, 7: Substrate, 8: Presser plate, 10:
Height adjustment member, 12: guide member, 14: stop member.

Claims (1)

[Scope of utility model registration request] The sewing element includes a base plate and a presser plate attached to the base plate so as to be openable and adjustable in height, and a sewing machine needle is guided to longitudinal edges on both sides of the presser plate. A sewing jig characterized in that a guide member is provided, and a stop member for determining the width of the sewn portion is slidably provided on the guide member.