JPS63279873A - Root winding method and apparatus of button sewing machine - 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 "Field of Industrial Application" The present invention relates to a neck wrapping method and apparatus for a button sewing machine that sews buttons onto sewn products in a sewing factory.

``Prior Art'' Conventionally, various button sewing machines of this type have been disclosed. For example, a button is first sewn using a cam,
The next step involved stacking and wrapping, which was a redundant sewing process.

``Problems to be Solved by the Invention'' As mentioned above, when mechanically attaching buttons using a cam, etc., thread unraveling and skipping occur, especially in the board winding process, and when changing the predetermined number of stitches. , it is necessary to remove the cam etc. each time, resulting in a problem that the quality of the sewn product deteriorates and unnecessary costs are incurred.

"Means for Solving the Problems" In order to solve the problems mentioned above, the present invention uses a motor to move the table mechanically in the x and y directions.
The table can be moved in the Y direction, the computer is used to change the number of stitches and button sewing patterns, the sewing machine rotation speed is automatically controlled for sewing, and preliminary stitching is performed until the sewing is stable. After stabilizing, the problem was solved by returning the sewing machine rotation to normal, sewing the button, and using two cylinders to separate deep seams (square thread) and shallow seams (normal seams). It is a means for

``Embodiments and Effects'' Now, detailed description will be given of the accompanying drawings showing an example of implementing the present invention.

1 is a button holder that clamps the button, 2
3 is a fabric holder for placing the fabric to be buttoned; 3 is a fabric presser that presses the fabric from above by the action of the cylinder 21; 4 is a fabric guide that works together with the fabric holder 2 to fix the fabric. , 5 is the table,
This is to move the tongue holder 1 in the X and Y directions. 6 is the fabric holder arm (left), which releases the fabric holder 2 after sewing the button by the action of the cylinder 8;
8 is a fabric holder arm (right) that attaches the button holder 1, and 8 is a fabric holder fixing cylinder that presses the fabric holder 2 during button sewing. 9 is a connecting rod that transmits the action of the cylinder 8 to the action of the fabric holder. Reference numeral 10 denotes a shaft, which is a rotating shaft for opening and pressing the dough holder 2 via the dough holder bracket. 11
12 is a needle plate, 12 is a stopper that determines the needle drop position of fabric holder 2, 13 is a bracket for attaching fabric holder 3, and 14 is a square thread adjustment screw, which adjusts the depth and shallowness of the stitches. Screw 15 is the force release cylinder,
- A device that releases the sewing of the stitches, 16 is a force end release adjustment screw, and a screw that determines the position of the needle entry from the second stitch, 17 is a button holder rotation cylinder, and after sewing the buttonhole, the button holder 1 is wrapped in a board. A cylinder for moving from a horizontal state to a vertical state in order to change the process; 18 is a connecting rod that transmits the action of 1 cylinder 17 to the horizontal and vertical states of button holder 1; 19 is an arm similar to 18; fulfill one's role. 2° is a stopper that determines the horizontal and vertical position of the button holder 1, and 21 is a fabric presser cylinder that operates the fabric presser 3 and presses the fabric 0. A cylinder for releasing, 22 an arm, 23 a needle, and 24 a sewing machine arm.

Next, the operation of implementing the present invention will be described.

After setting the button in the button holder 1 and setting the fabric in the fabric holder 2, push it into the fabric guide 4 to the innermost part. Next, when the pedal is depressed, the fabric holder fixing cylinder 8 acts, and the fabric holder 2 is pressed together with the fabric against the upper surface of the fabric guide 4. At the same time, the fabric presser 3 presses the fabric from above under the action of the fabric presser cylinder 21, and the sewing machine starts. When the rotation starts and the first stitch is sewn, the force release cylinder 15 starts operating and the fabric holder 2 returns to the front.

Next, the entire feeding device moves forward so that the needle falls into the buttonhole from the second stitch onwards, and the button attaching process begins. When the predetermined number of stitches is completed, the needle 23 stops at the top dead center and the thread trimming knife is activated. Finish cutting the thread. Then, the feed device moves to the left to sew the left buttonhole, starts the button sewing process for the next buttonhole, and after completing the predetermined number of stitches,
The needle 23 stops again at the top dead center, and after the thread is cut by the operation of the thread trimming knife, the button holder 1 is moved from the horizontal position by the operation of the button holder rotation cylinder 17 to perform plate wrapping sewing. The operator turns to the vertical position and sews the first stitch, but the configuration of the stitch may be incomplete, so after sewing the first stitch into the fabric, This method performs plate-wrap sewing as shown.

Note that although this embodiment is designed for attaching four-hole buttons, it is possible to sew buttonholes of various shapes.

``Effects of the Invention'' With the above-described configuration, the present invention uses a motor to move the table in the X and Y directions instead of mechanically, thereby changing the number of stitches and button sewing patterns. Using a computer, the machine automatically controls the number of rotations of the sewing machine, performs preliminary stitching until the stitching is stable, returns the sewing machine rotation to normal after the stitching is stable, and performs button sewing. Deep seam with cylinder (force point)
The effects of this are truly great, such as by separating shallow seams (normal seams) and eliminating the occurrence of defective sewn products due to removal of cams, etc.

[Brief explanation of drawings]

The attached drawings show an example of carrying out the present invention. Figure 1 is a left perspective view of the apparatus of the present invention during the button sewing process, Figure 2 is a right perspective view of the same, and Figure 3 is the sheet wrapping process after button sewing. Therefore, the button holder is a perspective view when the button holder changes from a horizontal state to a vertical state, Fig. 4 is a plan view showing the order in which the board winding is performed, and Fig. 5 is a plane view showing the needle drop position of the second stitch before the board winding is completed. It is a diagram. 1-button holder, 2-fabric holder, 3-fabric presser, 4-fabric guide, 5-table, 6-fabric holder arm (left), 7-fabric holder (right), 8-fabric holder fixing cylinder, 9 series of knots, 10-shafts,
11--throat plate, 12-stopper, 13--fabric holder bracket, 14-square thread adjustment screw, 15-square thread release cylinder, 16-tip release adjustment screw, 17
- Button holder rotating cylinder, 18 series of connecting rods, 19
- Button holder shaft arm, 20-stopper, 21-
・Fabric holding cylinder, 22--arm, 23--needle, 24--sewing machine arm, 25--button, A.
・-First stitch position during stacked stitching, B-1-needle movement position during plate stitching, J-K...Position of the last two stitches during coarse stitching. Applicant: Yamato Sewing Machine Manufacturing Co., Ltd. (and 2 others) Figure 4A Figure 5 Procedural amendment dated August 20, 1985 1. Indication of case 1988 Patent Application No. 115512 2. Name of device Button sewing machine Nemaki method and its device 3, and its relationship to the amendment case Patent applicant address: 4-4-12 Nishitenma, Kita-ku, Osaka Name:
Yamato Sewing Machine Manufacturing Co., Ltd. 4, Agent 5, Voluntary amendment 6, Contents of the amendment Drawing 7, Contents of the amendment An engraving of the drawing originally attached to the application.
As per attached sheet.

Claims (1)

[Claims] 1. Separating deep stitches and shallow stitches using two cylinders, and performing feed operation using a motor, and changing the number of stitches and patterns such as button shapes etc. using a computer. A neck wrapping method for a button sewing machine featuring: 2. A motor is provided to move the table in one direction, and another motor is provided to move the table in the other direction, and two motors are provided to change the number of stitches and button sewing patterns. A neck-wrapping device for a buttoned miten, characterized in that it is provided with a cylinder, and has a motor and a computer device for operating the cylinder.