JPS58188492A - Stitching jig - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jig, and particularly to a structure for sewing a curved portion of a cut sewing member to a straight portion of a cut sewing member.

In general, when sewing trim covers, etc. that are placed over the cushioning material of automobiles, sewing parts such as the main part and side parts (hereinafter simply referred to as sewing parts) that are cut into a predetermined shape are sewn all over the sewing machine. However, during this sewing process, as shown in the first diagram, it is possible to sew a sewing member b having a curved end to a sewing member a having a straight end, as shown in the first figure. 'Et there. This is because it is necessary for the sewing member b to have a predetermined bulge relative to the sewing member a after sewing is completed.

By the way, when performing the above-mentioned sewing work, conventionally, sewing members a and b are sandwiched between the presser foot and the feed dog of the sewing machine while the sewing starting ends c and d of the sewing members a and b are overlapped with each other with the sewing start ends c and d almost aligned. After that, insert the sewing machine wire into the sewing start edges c and d. Then, the curved edge h at the end of sewing member b is aligned with the straight edge g at the end of sewing member a by a short sewing length, and after sewing the aligned portion, the curved edge is again aligned to the straight edge g. By repeating the sewing process many times while aligning the edges with a slight sewing length, sewing ends e and f of sewing members a and b are sewn. For this reason, although a high degree of skill and careful attention are required, there are many variations among workers, and the actual situation is that it is not possible to achieve a good seam yield with a good sewing profit.

Non-invention (1) In view of the conventional situation mentioned above, the object is to create a sewing machine between the presser foot and the feed dog of the sewing machine while the sewing member having a straight portion and the sewing member having a curved portion are mated together with their sewing starting ends substantially aligned. After clipping the sewing end of the sewing member having a curved part with a clip, simply driving the sewing machine will cause the sewing member having a straight part to move straight in the sewing feed direction of the sewing machine, and To provide a sewing jig that can sew a curved part of another sewing member by copying and sewing a straight part of another sewing member by swinging the entire sewing member having a section.

Hereinafter, details of embodiments of the jig in which the invention is implemented will be explained with reference to FIGS. 2 to 5.

As shown in the second figure, the jig 1 of the present invention includes a kite board 2 fixed on a table i of a sewing machine, and this guide board 2 is attached to mounting screws 3, 3, etc. seated on the table i. The guide board 2 is made up of the presser foot J and the feed dog 1 (of the sewing machine) and is removable when the sewing machine is positioned at an elevation of 10,000 yen in front of the sewing machine in the sewing feed direction (same as the direction of the arrow X). is formed into a flat plate shape, and a guide end surface 4 is provided in front of the feed dog in a straight line along the sewing feed direction of the sewing machine. A hole 5 and a second guide hole 6 are bored, and the first guide hole 5 has an elongated shape meandering in a predetermined shape along the guide end surface 4, and the second guide hole 6 is connected to the first guide hole. 5
It is located in the middle of the guide end surface 4 and is elongated in a straight line in a direction substantially orthogonal to the guide end surface 4. These first guide holes 5 and second guide holes 6 are formed so as to be separated from each other.

An actuating arm 1 is movably mounted on the guide substrate 2, and the actuating arm 7 is moved from the second guide hole 6 to the first
It is in the shape of a long and narrow strip extending to the kite hole 5. Pins 8 and 9 are installed in the parts spanning the first guide hole 5 and the second guide hole 6, respectively, and these pins 8 and 9 are shown in FIGS. 3 and 9, respectively. As shown in Figure 4, rollers 10 and I+ are rotatably fitted. That is, as shown in FIG. 3, the pin 8 is positioned in the first guide hole 5 and protrudes from the actuating arm 7, and the protruding portion of the pin 8 has a width larger than the hole width of the first guide hole 5. A row 210 with a slightly pebbled profile is installed. Moreover, as shown in FIG.
The pin 9 protrudes from the actuating arm 1 while being located within the guide hole 6, and a roller 11 having an outer diameter slightly smaller than the width of the second guide hole 6 is attached to the protruding portion of the pin 9.

As shown in the second figure, a clip 12 is integrally formed at the tip of the actuating arm 1 extending from the first guide hole 5 toward the guide end surface 4, and the gripping portion of the clip 12 is connected to the guide. It projects slightly beyond the end face 4. This clip 12 is a fixed piece 13 that is integrally extended from the operating arm 1.
and a movable piece 1 rotatably supported on this fixed piece 13.
4, this movable piece 14 is biased in the closing direction by a spring (not shown) installed between the fixed piece 13 and the movable piece 140, and a movable piece 14 located at the rear of the support shaft 15. By pressing the piece 14 toward the fixed piece 13 while resisting the elastic force of the spring, the tip of the movable piece 14 is lifted and the tip of the clip 12 is opened. Further, one end of a hanging string 16 is fixed to the operating arm 1 located near the pin 8, and this hanging string 1
6 extends in front of the guide hole 5 and is connected to a reversing roller 17 rotatably fixed on the table i. The extended end of the hanging cord 16 that is caught by this roller 11 connects the through hole 1B drilled in the table i to the table i.
This hanging cord 16. penetrates into the lower blade. A weight 19 is fixed to the other end. With this one spindle 19, as will be described later, when the sewing end f of the sewing member having a curved portion is sewn and fed in the direction of the arrow X while being held by the clip 12, the sewing member Hebari and ri are given.

In addition, a clamping member 20 is provided at the tip of the guide end face 4 located on the side of the Ail gear feed dog, and this clamping member 20 is fixed with a Cheeluminium K mounting screw 21 as shown in FIG. The clamping member 20 and the guide end surface 4 are provided with sewing members a,
The local edges g and h of the seam allowance b are arranged to be moved in the direction of the arrow X.

According to the embodiment configured as described above, the local parts of the edges g+h of the sewing member a having the straight portion and the sewing member having the full thickness of the curved portion are positioned on the clamping member 20 and the guide end surface 4, and each Sewing start ends c and d (i7) of sewing members a and b are almost aligned and are inserted between the presser foot J and the feed dog of the sewing machine, and the sewing end f of the sewing members a and b are placed in the clip 12. At this time, the straight edge g of the sewing member a is brought into contact with the guide end surface 4. In this way, by fully driving the sewing machine after setting the sewing members a and b, the sewing members a and b are The upper thread (not shown) is intermittently transferred in the direction of arrow X by the elastic pressing of the presser foot J and the feed dog in cooperation with the feed drive, and moves up and down in synchronization with the feed dog k from the needle t. and a bobbin thread from a bobbin (not shown) attached to the lower part of the feed dog 1 (not shown).

By the way, when the sewing member held by the clip 12 is sewn and fed in the direction of the arrow X, the actuating arm 7 draws a regulated locus in cooperation with the first guide hole 5 and the second guide hole 6. That is, as the clip 12 moves in the direction of arrow X while receiving resistance from the weight 19, the pin 8 moves to the first position.
Since the pin 9 follows the second guide hole 6 while following the guide hole 5, the actuating arm 7 makes a combined movement in the arrow Z direction and the arrow W direction, and the clip 12 moves in the arrow X direction while swinging in the arrow Y direction. be done. Therefore, while the sewing member is being swung in the direction of the arrow Y, the sewing member is sewn with the curved end edge g of the end of the sewing member a substantially matching the straight end edge g of the end of the sewing member a.

As explained above, according to the invention, the sewing starting ends of the sewing members to be sewn together are inserted between the presser foot and the feed dog of the sewing machine. By simply driving the sewing machine after clamping the end of the sewing material with the end metal clips of the sewing material that covers the entire curved part, the curved part of another sewing material will be sewn by copying the straight part of the sewing material, so it will always be sewn evenly. - All the required stitching is ensured, and reliable stitching makes the work more efficient. Since the mechanism has a simplified structure for swinging along the sewing machine, there is less load on the sewing feed drive of the sewing machine, and a reliable swinging motion can be provided at low cost.

Furthermore, since the guide board is disposed on the side facing the sewing machine feeder, it is possible to easily feed sewing members to the sewing machine.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a general sewing member having all straight parts and a sewing member having a curved part, FIG. Figure 3 is a sectional view taken along the ■-■ line in Figure 2, and Figure 4 is a cross-sectional view taken along the line IV-I in Figure 2.
5 is a sectional view taken along the line v--v in FIG. 2. DESCRIPTION OF SYMBOLS 1... Jig, 2... Guide board, 4... Guide end surface, 5... First guide hole, 6... Second guide hole, I
... Operating arm, 8.9... Pin, 12... Clip, a, b... Sewing member. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A straight line part of a sewing part + a curved part of another sewing part
In a sewing jig for sewing with a sewing machine, there is a guide board that is fixed on one side in the front side of the sewing machine in the sewing feed direction, and an end face of the guide board that is located in front of the feed teeth of the sewing machine. a guide end surface formed in a straight line along the sewing feed direction and guiding the straight portion of the sewing member; first and second guide holes bored in the guide substrate in a mutually intersecting state; 1. An actuating arm that draws a predetermined synthetic movement locus along the curved portion of the another sewing member while being regulated by the second guide hole, and the other sewing member at the tip of the actuating arm that protrudes from the end surface of the kite. A sewing jig comprising a clip that removably holds the sewing end of the sewing machine.