Sewing jig

Abstract

To provide a sewing jig that can effectively suppress fabric shifting during sewing. [Solution] The sewing jig 1 used to sew two pieces of fabric W1 and W2 together includes a plate-shaped fabric holding plate 2 on which the two pieces of fabric W1 and W2 are set so that they overlap on top of each other and which is moved along the sewing machine table during sewing; a plurality of presser feet P3 to P6 provided on the fabric holding plate 2 that individually press down on multiple points along the sewing line S of the two pieces of fabric W1 and W2 from above; and a release unit 5 that operates to release each presser foot P3 to P6 in order from the one closest to the sewing needle 11A as the sewing needle 11A approaches during sewing.

Description

[[Technical Field]]

[0001] The present invention relates to a sewing jig. More specifically, the present invention relates to a sewing jig used for sewing two pieces of fabric together. [[Background Art]]

[0002] Patent Document 1 discloses a sewing jig used for sewing the edges of two pieces of fabric together. The sewing jig has a pressing member that fixes the edges of the two pieces of fabric in an aligned state. The pressing member is configured to press the vicinity of the sewing line of the two pieces of fabric from the upper side. This pressing member prevents displacement of the edges of the two pieces of fabric relative to each other during sewing. [[Prior Art Documents]] [[Patent Documents]]

[0003] [[Patent Document 1]] Japanese Unexamined Patent Publication No. 9-220390 [[Summary of the Invention]] [[Problems to be Solved by the Invention]]

[0004] In the configuration described in Patent Document 1, the pressing member is configured to press a region inside the sewing line of the two pieces of fabric so that the pressing member does not interfere with the sewing needle during sewing. As a result, the pressing member is spaced apart from the sewing line, making it impossible to appropriately suppress displacement during sewing. Accordingly, the present invention provides a sewing jig capable of appropriately suppressing displacement of fabric during sewing. [[Means for Solving the Problems]]

[0005] As a means for solving the above problems, the sewing jig of the present invention adopts the following means.

[0006] In other words, the first invention of the present invention is a sewing jig used for sewing two pieces of fabric together, comprising: a plate-shaped fabric holding plate on which the two pieces of fabric are set so as to overlap on the upper surface and which is moved along the sewing machine table during sewing; a plurality of presser feet provided on the fabric holding plate which individually press down on a plurality of locations along the sewing line of the two pieces of fabric from above; and a release unit which operates to release the plurality of presser feet in order from the one closest to the sewing needle as the sewing needle approaches during sewing.

[0007] According to the first invention, multiple presser feet are sequentially released by a release unit during sewing, preventing them from interfering with the sewing needle. Therefore, each presser foot can be positioned close to the sewing line to appropriately suppress fabric shifting during sewing.

[0008] The second invention of the present invention is a sewing jig in which, in the first invention described above, a plurality of presser feet are positioned along the sewing line of the lower of two pieces of fabric that are set to be sewn together, and the shapes of the fabric edges of the two pieces of fabric are different.

[0009] According to the second invention, the upper fabric can be properly fixed in a bent shape to match the sewing line of the lower fabric by using presser feet that can hold the two pieces of fabric close to the sewing line. Therefore, even if the two pieces of fabric have different edge shapes, their misalignment during sewing can be properly suppressed.

[0010] The third invention of the present invention is a sewing jig in which, in the first or second invention described above, a plurality of presser feet press down on the two pieces of fabric so as to step on the sewing line.

[0011] According to the third invention, each presser foot can effectively suppress misalignment of the two pieces of fabric during sewing.

[0012] The fourth invention of the present invention is a sewing jig in which, in the third invention described above, a plurality of pressers press down on the locations where alignment V-notches are formed on the edges of the two pieces of fabric.

[0013] According to the fourth invention, even if the upper fabric is bent to match the seam of the lower fabric, each presser foot can fix them in a properly aligned state.

[0014] The fifth invention of the present invention is a sewing jig in which, in the first or second invention described above, a plurality of presser feet are positioned outside the sewing line.

[0015] According to the fifth invention, each presser foot can be positioned close to the seam between the two pieces of fabric. As a result, the length of each presser foot extending from the fabric holding plate can be kept short.

[0016] The sixth invention of the present invention is a sewing jig in which, in the first or second invention described above, a plurality of pressers have arms extending from the fabric holding plate and pressing parts attached to the ends of the arms for pressing down on two pieces of fabric, and the pressing part has a pressing shape that extends significantly downstream from the mounting position on the arm, rather than upstream of the sewing.

[0017] According to the sixth invention, each presser foot can be shaped to be positioned further downstream from the sewing needle without reducing the area of ​​pressure applied. This allows for a later release of each presser foot in response to the approaching sewing needle. As a result, each presser foot can be released after the sewing needle has been drawn closer. Therefore, slippage of each fabric during sewing can be more effectively suppressed. [Brief explanation of the drawing]

[0018] [Figure 1] This is a perspective view showing the schematic configuration of a sewing jig according to the first embodiment. [Figure 2] These are plan views of each fabric. [Figure 3] It is a plan view of a sewing jig. [Figure 4] It is an enlarged view of the presser. [Figure 5] It is an enlarged view showing a state where the presser is removed. [Figure 6] It is a plan view of the presser. [Figure 7] It is an enlarged view of a main part of Figure 3. [Figure 8] It is an enlarged view showing a state where a first presser is removed after sewing. [Figure 9] It is an enlarged view showing a state where a second presser is removed as sewing progresses. MODE FOR CARRYING OUT THE INVENTION

[0019] Hereinafter, modes for carrying out the present invention will be described with reference to the drawings.

[0020] <<FIRST EMBODIMENT>> (Schematic configuration of sewing jig 1) First, the configuration of a sewing jig 1 according to a first embodiment of the present invention will be described with reference to Figures 1 to 9. In the following description, when directions such as front-rear, up-down, left-right and the like are indicated, they refer to the respective directions shown in each figure. In addition, in the following description, when no specific reference figure is indicated, or there is no reference sign corresponding to the reference figure, any one of Figures 1 to 9 shall be appropriately referred to.

[0021] As shown in Figure 1, the sewing jig 1 according to the present embodiment is configured as a fixing jig used when two pieces of cloth W1 and W2 are sewn together by an automatic sewing machine 10. The sewing jig 1 includes: a rectangular plate-shaped cloth holding plate 2 on which the two pieces of cloth W1 and W2 are set so as to overlap the upper surface thereof; and a positioning guide 3 arranged around the cloth W1 laid on the lower side.

[0022] Furthermore, the sewing jig 1 has multiple presser feet 4 (P1 to P9) for pressing down and fixing the two pieces of fabric W1 and W2 on the fabric holding plate 2 from above. Each presser foot 4 consists of a toggle clamp that can be manually operated to clamp or release the two pieces of fabric W1 and W2 from above. Each presser foot 4 is positioned on the fabric holding plate 2 so as to be able to individually press down on multiple points along the sewing line S of the two pieces of fabric W1 and W2 from above.

[0023] Furthermore, the sewing jig 1 has a release unit 5 that operates to release several presser feet 4 in order from the one closest to the sewing needle 11A when sewing is performed by the automatic sewing machine 10. This release allows each presser foot 4 to be properly sewn onto each fabric W1 and W2 without interfering with the sewing needle 11A. The sewing onto each fabric W1 and W2 is performed by the sewing machine head 11 moving the sewing needle 11A up and down, and the fabric holding plate 2 moving horizontally (XY direction) on the sewing machine table 12 according to a predetermined programmed sewing pattern by a feed mechanism (not shown).

[0024] As shown in Figure 2, the two pieces of fabric W1 and W2 consist of planar members with different shapes at the edges where they are sewn together. Specifically, one piece of fabric W1, shown on the left side of the figure, is wider than the other piece of fabric W2, shown on the right side. In addition, the edge of the left piece of fabric W1 that is sewn together with the right piece of fabric W2 is cut in a convex curve shape.

[0025] The fabric on the right, W2, is cut so that the edge to be sewn to the fabric on its left, W1, has a gentler convex curve than the convex curve of the fabric on the left, W1. Therefore, in order to sew the edges of these two fabrics, W1 and W2, it is necessary to align and fix them so that their sewing lines S overlap. Multiple V-shaped notches Wn are formed along the sewing lines S of both fabrics W1 and W2 to serve as markers for aligning them.

[0026] As shown in Figure 3, the two pieces of fabric W1 and W2 are set on the fabric holding plate 2 as follows. In the initial stage before setting each piece of fabric W1 and W2, the clamps on each of the fasteners 4 are released.

[0027] First, the fabric W1 on the wider side is placed on the area enclosed by the guide 3 of the fabric holding plate 2. The guide 3 is installed on the fabric holding plate 2 so as to intermittently surround the periphery of the fabric W1 on the wider side, conforming to its shape.

[0028] Next, the other piece of fabric W2 is set on the fabric holding plate 2 so that its respective V-notches Wn (see Figure 2) align with those of fabric W1. Specifically, first, the starting end of fabric W2, which will be the starting point for sewing, is manually aligned with the corresponding starting end of fabric W1 on the fabric holding plate 2.

[0029] Then, the presser foot P1, positioned near the start of the stitching, is manually operated to switch to a state where the upper fabric W2 is pressed down from above. As a result, the starting ends of both fabrics W1 and W2 are fixed in place on the fabric holding plate 2 by the presser foot P1.

[0030] Next, the end of the seam of fabric W2 is manually aligned with the corresponding end of fabric W1 on the fabric holding plate 2. Then, the presser foot P2, positioned near the end of the seam, is manually operated to switch to a state where the upper fabric W2 is pressed down from above.

[0031] As a result, the ends of both fabrics W1 and W2 are fixed in place by the clamper P2 on the fabric holding plate 2. By clamping the start and end ends of both fabrics W1 and W2 first, misalignment between them is less likely to occur compared to clamping sequentially from the start end to the end end.

[0032] From this point onward, starting from the beginning to the end of the seam between fabrics W1 and W2, the edge of the upper fabric W2 is manually aligned sequentially with the edge of the lower fabric W1, while clamping the presser feet P3 to P9, which are positioned near each fabric, in that order. As a result, the edges of the two fabrics W1 and W2, which have different shapes, can be properly overlapped and fixed on the fabric holding plate 2.

[0033] In this embodiment, nine presser feet P1 to P9 are used as the presser foot 4. Of these, presser foot P1, which clamps the starting end, and presser foot P2, which clamps the ending end, are configured to press down on the areas outside and inside the sewing line S of each fabric W1 and W2 in a U-shape in plan view, bypassing the sewing line S. These presser feet P1 and P2 are clamped so as to press down on the areas where the V-notches Wn (Figure 2) formed on each fabric W1 and W2 meet.

[0034] Furthermore, the presser foot P3, which follows the starting presser foot P1, the two presser feet P4 and P5 that follow, and the presser foot P6, which is skipped after that, are configured to press down deeply on the areas outside and inside the sewing line S of each fabric W1 and W2, so as to step on the sewing line S. These presser feet P3 to P6 are intended to fix the convex curved edges of both fabrics W1 and W2 from the beginning to partway through the sewing.

[0035] Pressers P3 to P6, which press down deeply as if stepping on these sewing lines S, fix the edges of the two fabrics W1 and W2, which have different shapes, in a properly overlapping state. These pressers P3 to P6 also clamp down on the points where the V-notches Wn (Figure 2) formed in each fabric W1 and W2 meet.

[0036] Furthermore, the presser foot P7, which is positioned between presser feet P5 and P6, is configured to lightly press down only the area outside the sewing line S of each fabric W1 and W2. The pressing down by the presser foot P7 makes it less likely for the area of ​​the upper fabric W2 between presser feet P5 and P6 to lift up. The presser foot P7 is clamped after presser feet P5 and P6 are clamped. This allows for proper suppression of the lifting of fabric W2 without causing misalignment of the fabric edges of each fabric W1 and W2.

[0037] Guides 3 are positioned intermittently between the clamping pin P1 that clamps the starting ends of each fabric W1 and W2, and the three subsequent clamping pins P3 to P5. These guides 3 allow for proper alignment of the fabric edges of each fabric W1 and W2.

[0038] Furthermore, the two pressers P8 and P9 positioned between the aforementioned presser foot P6 and the end presser foot P2 are configured to lightly press down only the areas outside the sewing line S of each fabric W1 and W2. These presser feet P8 and P9 are designed to press down the areas that have been cut straight out from the middle of the fabric edges of both fabrics W1 and W2.

[0039] Therefore, even if each presser foot P8 and P9 is structured to only lightly press down on the area outside the sewing line S of each fabric W1 and W2, the edges of each fabric W1 and W2 can be fixed in a properly aligned state. Thus, these presser feet P1 to P9 can fix the edges of each fabric W1 and W2 in a properly aligned state on the fabric holding plate 2.

[0040] Of the presser feet 4 described above, presser feet P3 to P6 that press down deeply so as to step on the sewing line S are positioned on the trajectory of the sewing needle 11A during sewing. Therefore, these presser feet P3 to P6 are released from the clamped state by the release unit 5 in order from the one closest to the sewing needle 11A so as not to interfere with the sewing needle 11A during sewing.

[0041] Furthermore, the other presser feet P1-P2 and P7-P9 are clamped so as not to step on the sewing line S, and are therefore not released by the release unit 5 during sewing. This is because, since these presser feet P1-P2 and P7-P9 do not step on the sewing line S, they do not interfere with the sewing needle 11A even if they remain clamped during sewing.

[0042] Each presser foot 4 (P1-P9) is positioned outside the area enclosed by the guide 3 of the fabric holding plate 2. More specifically, each presser foot 4 is positioned outside the convex curve of each fabric W1, W2, rather than inside, and is aligned along the sewing line S. Each presser foot 4 is positioned with a gap between them in the direction of alignment.

[0043] (Pressure 4) As shown in Figures 4 to 6, each clamp 4 (P1 to P9) has a base 4A fixed on the fabric holding plate 2, a lever 4B and an arm 4C rotatably connected to the base 4A, and a pressing part 4D attached to the tip of the arm 4C. Each clamp 4 consists of a toggle clamp that moves to clamp or release the arm 4C using the movement of the lever 4B.

[0044] Lever 4B is connected to base 4A so that it can be manually pushed down or flipped up horizontally. Lever 4B is positioned to be pushed down relative to base 4A toward the side away from each fabric W1, W2.

[0045] Arm 4C is connected to base 4A in such a way that it is pushed down or flipped up horizontally in conjunction with the movement of lever 4B. Specifically, when lever 4B is pushed down, arm 4C is pushed down so that the pressing part 4D at its tip presses against each fabric W1, W2 from above (see Figure 4).

[0046] Furthermore, when the lever 4B is flipped up, the arm 4C is flipped up so that the pressing part 4D is moved outward from directly above each fabric W1, W2 (see Figure 5). The pressing part 4D is made of a non-slip material such as rubber or elastomer. As shown in Figure 6, as the arm 4C is pushed down, the pressing part 4D is pressed against the upper fabric W2 from above so as to make surface contact.

[0047] Of the presser feet 4, the presser feet P3 to P6 that clamp onto the sewing line S have a pressing shape in which their pressing portion 4D extends significantly downstream from the mounting position on the arm 4C, rather than upstream. As a result, the pressing portion 4D of these presser feet P3 to P6 is shaped to be further downstream from the sewing needle 11A without reducing the pressing area.

[0048] With this configuration, each presser foot P3 to P6 can delay the timing of releasing the clamp when the sewing needle 11A approaches during sewing. In other words, each presser foot P3 to P6 can release the clamp after drawing the sewing needle 11A closer. Therefore, each fabric W1 and W2 can be pressed down in a way that reduces shifting during sewing.

[0049] (Release Unit 5) As shown in Figure 3, the release unit 5 is provided on the cloth holding plate 2. Specifically, the release unit 5 includes an air supply unit 5A that receives air from the outside, and four air actuators 5C that are individually connected to the air supply unit 5A by air tubes 5B.

[0050] The four air actuators 5C are capable of individually releasing the four pressers P3 to P6 that clamp the sewing line S using air force. Specifically, as shown in Figure 4, each air actuator 5C has a main body C1 fixed on the fabric holding plate 2, a release arm C2 rotatably connected to the main body C1, and an air cylinder C3 that operates the release arm C2 by receiving air from an air tube 5B.

[0051] Each air actuator 5C is positioned one on the outside of each retainer P3 to P6. The release arm C2 extends from the main body C1 so as to tuck under the levers 4B of each retainer P3 to P6. As shown in Figure 5, when air is supplied to the corresponding air cylinder C3, the base end of the release arm C2 is pushed in from above by the air cylinder C3 and flipped up.

[0052] As a result, the levers 4B of the corresponding presser feet P3 to P6 are flipped up, releasing their respective clamps. Air is supplied to each air actuator 5C at individual timings when the sewing needle 11A approaches each corresponding presser foot P3 to P6 during sewing. Specifically, air is supplied to each air actuator 5C by an air supply device (not shown) that performs a predetermined air supply operation based on an output signal incorporated into the sewing program of the automatic sewing machine 10 (see Figure 1).

[0053] At such timings, the clamps of each presser foot P3 to P6 are released individually, allowing each fabric W1 and W2 to be properly held down by the corresponding presser foot P3 to P6 until just before the sewing needle 11A approaches. Furthermore, as the sewing needle 11A approaches, the corresponding presser foot P3 to P6 can be released from their clamps at the appropriate timing to prevent interference with the sewing needle 11A.

[0054] The supply of air to each air actuator 5C is stopped after a predetermined time has elapsed, during which the release arm C2 has finished flipping up. Therefore, after the lever 4B has finished pushing up, the release arm C2 of each air actuator 5C is returned by its own weight to the initial position before flipping up, as shown in Figure 4.

[0055] Figures 7 to 9 show schematic diagrams illustrating the movement of each presser foot 4 during sewing. As shown in Figure 7, when sewing begins and the sewing needle 11A is sewing the starting edges of each fabric W1 and W2, presser feet P3 and P4, which are away from the starting edges, remain clamped.

[0056] However, as shown in Figure 8, as sewing progresses and the sewing needle 11A approaches the second presser foot P3, air is supplied to the aforementioned air actuator 5C (see Figure 5), and the clamp on the second presser foot P3 is released. At that time, the third presser foot P4 remains clamped.

[0057] Subsequently, as shown in Figure 9, sewing continues, and the sewing needle 11A approaches the third presser foot P4, causing the clamp on the third presser foot P4 to be released by the air supply described above. Sewing continues in the same manner thereafter.

[0058] After sewing is complete, the remaining presser feet P1-P2 and P7-P9, which are not automatically released as shown in Figure 3, can be manually released to remove the sewn fabrics W1 and W2 from the fabric holding plate 2. The sewn fabrics W1 and W2 can then be turned inside out along the sewing line S and unfolded to create a bulging, three-dimensional cover (seat cover or interior trim).

[0059] In summary, the sewing jig (1) according to this embodiment has the following configuration. The reference numerals in parentheses below correspond to the respective components shown in the above embodiment.

[0060] In other words, the sewing jig (1) used to sew two pieces of fabric (W1, W2) together has a plate-shaped fabric holding plate (2) on which the two pieces of fabric (W1, W2) are set to overlap on top of each other and which is moved along the sewing machine table (12) during sewing. The sewing jig (1) also has a plurality of presser feet (P3~P6) provided on the fabric holding plate (2) that individually press down on multiple points along the sewing line (S) of the two pieces of fabric (W1, W2) from above. The sewing jig (1) also has a release unit (5) that operates to release the plurality of presser feet (P3~P6) in order from the one closest to the sewing needle (11A) as the sewing needle (11A) approaches during sewing.

[0061] In this way, the multiple presser feet (P3 to P6) are released sequentially by the release unit (5) during sewing, preventing them from interfering with the sewing needle (11A). Therefore, by positioning each presser foot (P3 to P6) close to the sewing line (S), the shifting of the fabric (W1, W2) during sewing can be appropriately suppressed.

[0062] Furthermore, multiple presser feet (P3-P6) are positioned along the sewing line (S) of the lower fabric (W1) of two pieces of fabric (W1, W2) with different shaped edges to be sewn together. With this configuration, each presser foot (P3-P6), which can hold the two pieces of fabric (W1, W2) close to the sewing line (S), can properly fix the upper fabric (W2) in a bent shape to match the sewing line (S) of the lower fabric (W1). Therefore, even if the two pieces of fabric (W1, W2) have different shaped edges, misalignment during sewing can be properly suppressed.

[0063] Furthermore, multiple presser feet (P3-P6) press down on the two pieces of fabric (W1, W2) so as to step on the sewing line (S). With the above configuration, each presser foot (P3-P6) can effectively suppress misalignment of the two pieces of fabric (W1, W2) during sewing.

[0064] Furthermore, multiple presser feet (P3 to P6) press down on the areas where the V-notches (Wn) for alignment are formed on the edges of the two pieces of fabric (W1, W2). With the above configuration, even if the upper piece of fabric (W2) is bent to match the sewing line (S) of the lower piece of fabric (W1), the presser feet (P3 to P6) can fix them in an appropriately aligned state.

[0065] Furthermore, multiple presser feet (P3-P6) are positioned outside the sewing line (S). With the above configuration, each presser foot (P3-P6) can be positioned close to the sewing line (S) of the two pieces of fabric (W1, W2). As a result, the length of each presser foot (P3-P6) extending from the fabric holding plate (2) can be kept short.

[0066] Furthermore, each presser foot (P3~P6) has an arm (4C) extending from the fabric holding plate (2), and a pressing part (4D) attached to the tip of the arm (4C) to press down on two pieces of fabric (W1, W2). The pressing part (4D) has a pressing shape that extends significantly downstream from the attachment point on the arm (4C) rather than upstream.

[0067] According to the above configuration, each presser foot (P3-P6) can be shaped to be further downstream from the sewing needle (11A) without reducing the area of ​​pressure applied. This allows for a later release of each presser foot (P3-P6) in response to the approaching sewing needle (11A). As a result, each presser foot (P3-P6) can be released after the sewing needle (11A) has been brought closer. Therefore, the shifting of each fabric (W1, W2) during sewing can be more effectively suppressed.

[0068] Regarding other embodiments: Although the embodiments of the present invention have been described above using one embodiment, the present invention can be implemented in various forms other than those described above.

[0069] 1. The sewing jig of the present invention may be used to sew together any part of two pieces of fabric. That is, the sewing jig may be used to sew together the edges of two pieces of fabric, or to sew together the edge of one piece of fabric to an intermediate part of the other piece of fabric that is away from the edge.

[0070] 2. Multiple presser feet may be used to hold two pieces of fabric with different stitching line shapes together, or to hold two pieces of fabric with identical stitching line shapes together. The edges of the two pieces of fabric to be sewn together may be cut in a convex curve, a concave curve, a straight cut, or a combination of these shapes.

[0071] Each clamp may consist of a clamping mechanism other than a toggle clamp, such as an air clamp, hydraulic clamp, electromagnetic clamp, or suction clamp. In connection with this, the release unit can also employ various release mechanisms, including an air-operated type that releases the clamps of each clamp by supplying air, as well as electric motor type, magnetic type, hydraulic type, electromagnetic type, and cam type.

[0072] The release unit may release the clamps on each presser foot by detecting the approach of the sewing needle with a sensor. Alternatively, the release unit may sequentially release the clamps on each presser foot as time elapses from the start of sewing.

[0073] Each presser foot may be designed to hold down the two pieces of fabric so as not to step on the seam between them. Furthermore, each presser foot may be positioned outside the seam, or inside the seam. The two pieces of fabric may also be sewn together with an intermediate material, such as nonwoven fabric, sandwiched between them. [Explanation of symbols]

[0074] 1 Sewing jig 2. Fabric holding plate 3 Guide 4. Press down 4A Bass 4B Lever 4C arm 4D pressing part 5. Release Unit 5A Air supply unit 5B Air Tube 5C Air Actuator C1 Main body C2 Release Arm C3 Air Cylinder P1-P9 Holder 10 Automatic Sewing Machines 11 Sewing machine heads 11A Sewing needle 12 Sewing machine table W1 Fabric W2 Fabric Wn V-Notch S stitching line H Overhang amount

Claims

1. A sewing jig used for sewing two pieces of fabric together, A plate-shaped fabric holding plate is set so that the two pieces of fabric overlap on the top surface and is moved along the sewing machine table during sewing, The fabric holding plate is provided with multiple pressers that individually press down on multiple points along the sewing lines of the two pieces of fabric from above, A sewing jig having a release unit that operates to release multiple presser feet in order from the one closest to the sewing needle as the sewing needle approaches during sewing.

2. A sewing jig according to claim 1, A sewing jig in which multiple presser feet are positioned along the sewing line of one of two pieces of fabric, the lower of which has a different shape at the edges of the fabrics to be sewn together.

3. A sewing jig according to claim 1 or claim 2, A sewing jig in which multiple presser feet press down on the sewing line to hold down two pieces of fabric.

4. A sewing jig according to claim 3, A sewing jig in which multiple pressers press down on the locations where V-notches for alignment are formed on the edges of two pieces of fabric.

5. A sewing jig according to claim 1 or claim 2, A sewing jig in which multiple presser feet are positioned outside the sewing line.

6. A sewing jig according to claim 1 or claim 2, Each of the aforementioned pressers has an arm extending from the fabric holding plate and a pressing portion attached to the end of the arm for pressing down on the two pieces of fabric. A sewing jig in which the pressing portion has a pressing shape that protrudes significantly downstream from the mounting position where it is attached to the arm, rather than upstream.

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