JPS623110Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to ensure and facilitate the positioning of separate pieces of fabric when sewing separate pieces of fabric onto the target fabric, thereby achieving efficient sewing work. related to what was done.

As is well known, when sewing shirts and other secondary processed sewn products, cycle sewing machines, etc. are used to sew required marking fabric pieces and fabric pieces for quality and other indications to the sewn product body fabric, etc. During this operation, the presser foot on the sewing section of the sewing machine is raised, the piece of fabric is placed at the desired position on the body fabric, and the presser foot that has been raised is raised. Sewing is performed by lowering the metal to press and support the pieces of fabric and the body fabric, and the positioning and placement of these items is all done by hand, which takes time and effort, and is extremely difficult when processing large quantities. This method is inefficient and may cause problems such as the pieces of fabric, once positioned, moving accidentally.

The present invention was developed to solve these problems, and its feature is that a pair of presser feet, each of which is split into two parts, each forming a U-shape, is placed on the sewing section of the sewing machine. The U-shaped opening sides face each other, and each spring rod is slidably engaged with each guide slot of the holder, and the spring rods are simultaneously raised via each lifting rod that operates separately. A fabric piece box is arranged in parallel so that it can be lowered independently, and has an inlet and an outlet corresponding to each other at the lower end on one side of the presser foot. A slider is provided so as to be movable back and forth, and a U-shaped dough piece supplying member that holds the dough piece in a partially protruding manner is provided on the exit side so as to be movable back and forth toward the presser foot.

The present invention will be described in detail below with reference to the illustrated embodiment. In FIG. 1, the presser feet 1 and 2 are a pair of symmetrically divided U-shaped pieces,
The rear ends of the presser feet 1 and 2 are used as lifting rods 1a and 2a, and are held in a common holder 4 provided at the front end of a suitable support member 3 so as to be able to rise and fall vertically.
A spring rod 5 engaged with a part of the lifting rods 1a and 2a,
6 are slidably engaged with elongated guide holes 7 and 8 provided in the holder 4, and the presser feet 1 and 2 can be raised simultaneously and lowered independently by a drive mechanism that will be described later in FIG. It will be done. These presser feet 1 and 2 are supported by the supporting member 3 on a sewing table 9 in a sewing machine such as a known cycle sewing machine.
In the above, it is arranged at a position corresponding to the sewing machine needle 10 on the sewing machine head side, and although not shown on the sewing table 9 side, there is a known fabric feed dog mechanism,
Needless to say, sewing machine pots and the like exist. In the figure, reference numeral 11 indicates a piece of fabric that is pressed and supported by presser feet 1 and 2, and the piece of fabric 11 will be positioned and sewn onto the target body fabric 12. As a means for supplying the fabric piece 11 onto the body fabric 12,
In the illustrated example, as illustrated in Figure 2, there is an inlet 1 at the bottom.
A piece of fabric 11 is placed in a box 15 with three outlets 14.
are stored in a stacked manner, and an extrusion slider 17 is disposed on the inlet 13 side via an air cylinder 16 etc. so as to be able to move forward and backward, so that when the slider 17 moves forward, the lowest fabric piece in the box 15 is removed. 11 is pushed out one sheet from the box 15 from the outlet 14 side, and on the other hand, a U-shaped supply member 19 is directed toward the presser feet 1 and 2 through an air cylinder 18 or the like on the outlet 14 side. By disposing it so that it can move forward and backward, one piece of dough 11 extruded from the outlet 14 is clamped on the supply member 19 side, and as the supply member 19 moves forward, the same piece of dough 11 is supplied to the presser feet 1 and 2 side. It's like this.

According to the pair of split presser feet 1 and 2 which can be raised simultaneously and lowered independently according to the present invention, positioning and sewing of the piece of fabric 11 to the body fabric 12 is carried out as follows. That is, as shown sequentially in FIGS. 3A, 3B, and 3C, presser feet 1 and 2 are simultaneously raised upward, and body fabric 12 is placed on sewing table 9. After that, as shown in FIGS. 1 and 2, Through the dough piece feeding means including the illustrated box 15, slider 17, and feeding member 19, the dough piece 11 clamped by the U-shaped feeding member 19 is transferred to the presser foot 1,
2 onto the lower body material 12 as shown in FIG. 3A, and then, as shown in FIG. 3B, by lowering only one presser foot 1, While supporting the body fabric 1 on the half side of
2, the fabric piece 11 is positioned and fixed. After this positioning operation, by retracting the supply member 19, the remaining half of the dough piece 11 will also come into contact with the body material 12, so by lowering the other presser foot 2, the presser foot can be placed here. Fabric piece 11 made by both Kim 1 and 2
Since the complete positioning and fixing of the fabric piece 11 through the sewing machine needle 10 is carried out, the body fabric 12 of the fabric piece 11 is
After sewing is completed, both presser feet 1 and 2 are raised at the same time, and the body fabric 1
2, the sewing operation of the fabric piece 11 to the body fabric 12 is completed once.

Various mechanisms are conceivable as a drive mechanism for simultaneously raising and independently lowering the split presser feet 1 and 2, and the mechanism shown in FIG. 4 is used as one example thereof in the illustrated example. That is, the spring rods 5, which are respectively engaged with the lifting rods 1a and 2a of the divided presser feet 1 and 2;
6 has one end wound around and fixed to a common fixed boss 20, and is always pushed downward, thereby pressing down on the presser feet 1 and 2. In the middle of the mating spring rod 5, there is an actuation rod 21 rotatably supported on the fixed boss 20.
One end of the rod 21 is engaged with the piston rod 22a of the drive cylinder 22, and the piston rod 22a of the drive cylinder 22 is engaged with the other end of the rod 21 so as to be able to move up and down. The lower end of the actuating rod 24, which is provided so as to be able to rise and fall via the portion 25, is engaged, and the upper end of the rod 24 is connected to the drive cylinder 2.
An arm 29 of a rotating rod 29 in a link 28 whose lower end is connected to the piston rod 25a of No.
One end of the arm 29a is engaged with the arm 29.
A spring 30 is elastically supported at the other end of a. Of course, the drive mechanism is not limited to the illustrated example, and can be designed as appropriate by utilizing the space between the sewing machine heads. According to this example, on the presser foot 1 side,
As the piston rod 22a of the drive cylinder 22 rises, the actuating rod 21 rotates upward about the fixed boss 20, and the spring rod 5 rotates upward about the fixed boss 20, thereby causing If the presser foot 1 is raised and the rod 21 is lowered, the presser foot 1 will descend through the spring of the spring rod 5 and press against the piece of fabric 11.
Further, on the presser foot 2 side, by pulling down the piston rod 25a of the drive cylinder 25, the link 28 is lowered and the rotation rod 29 is rotated upward about the rotation support shaft 27, and the operation rod is rotated through the accompanying arm 29a. By raising 24, the spring rod 6 rotates upward about the fixed boss 20,
If the presser foot 2 is similarly raised and the piston rod 25a is also raised, the presser foot 2 will be lowered to press against the piece of fabric 11. Therefore, by driving both drive cylinders 22, 25 synchronously or independently, the pair of presser feet 1, 2 can be easily raised simultaneously and lowered separately.

According to the present invention, as illustrated in FIG. It is advantageous in that the entire process of feeding, positioning and fixing and sewing can be reliably and easily automated. That is, split presser feet 1 and 2
Since both are U-shaped and their U-shaped opening sides face each other, it is possible to reliably press only the outer periphery of the fabric piece 1, and the inside edge of the U-shape serves as a guide surface for the sewing machine needle during sewing. It can also act as a restraining surface to prevent stitches from coming off. Furthermore, when simultaneously raising and lowering the presser feet 1 and 2, the spring rods 5 and 6 of the present invention are individually actuated by separate lifting rods 22a and 28. The required structure is simpler and the operation is easier and more reliable. Furthermore, in the present invention, when supplying the dough piece 11 to the lower part of the presser feet 1 and 2, the dough piece box 15 is
By using a slider 17 for extruding one piece of dough 11, and a U-shaped supply member 19 that holds the same piece of dough 11 in a partially protruding manner on the exit side, automatic extrusion of one piece of dough 11 is performed. In addition to being easy to feed and saving the labor of manual feeding, this piece of fabric 11 is generally made of a stiff fabric material with a denser and harder structure than the body fabric. The feeding member 19 grips the front end of the dough piece 11 so that it is protruding, and moves it to the presser foot position, so that this bare piece of dough protrudes as a movement stroke that brings the tip of the protrusion to the fixed position. The preceding presser foot 1 can be pressed down onto the part, and even if the U-shaped opening portion of the U-shaped presser foot 11 partially overlaps with the supply member 19 side, the spring rod 5
Due to the pressure state caused by the U-shaped closed side, the protruding portion of the dough piece is securely clamped, and the supply member 19
As a result, smooth pulling and retraction of the material 19 can be achieved, and there is no fear of bringing back the fabric pieces, and smooth automatic feeding, positioning and fixing of the fabric pieces 11, and retraction of the member 19 can be achieved, eliminating manual work. Automatic feeding of dough piece 1 without any problem and with a simple structure,
It has a great advantage in that it can be sewn together.

[Brief explanation of the drawing]

Fig. 1 is a slope view of an embodiment of the present invention, Fig. 2 is a side sectional view of an example of automatic dough supply means, Fig. 3 is an explanatory diagram of the positioning state according to the invention, and Fig. 4 is simultaneous raising and independent lowering. FIG. 5 is an explanatory diagram of an example of an article to which the present invention is applied. 1, 2...Presser foot, 9...Sewing table, 10...Sewing machine needle, 11...Fabric piece, 12...Body fabric.

Claims (1)

[Scope of utility model registration request] A pair of presser feet, which are divided into two parts and each shaped like a U, are placed on the sewing section of the sewing machine, and are slidably engaged with each of the guide elongated holes of the holder, with the U-shaped opening sides facing each other. The spring rods are arranged side by side so that they can be simultaneously raised and lowered independently through individually operated lifting rods, and an inlet and an outlet are provided at the lower end of one side of the presser foot in a corresponding manner. A dough piece box is provided, and a slider for extruding a dough piece is provided on the inlet side of the box so as to be movable forward and backward, and a U-shaped dough piece is provided on the outlet side to sandwich the dough piece in a partially protruding manner. A sewing device for sewing pieces of fabric, characterized in that a supply member is provided so as to be movable toward and away from the presser foot.