JPH07114866B2 - Method and apparatus for sewing edging tape to the inner peripheral edge of the upper of a shoe using a straight stitch machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention uses a sewing machine with a straight stitch.
For sewing edging tape around the inner peripheral edge of the upper of a shoe
It concerns law and equipment .

[0002]

In the manufacturing process of the Related Art Shoes, work for sewing the border tape inside periphery of the carapace it is done using a sewing machine. Referring to FIG. 1 illustrating the structure and the sewing work carapace shoes. Jia skin 5 is formed the overall shape substantially "U" shaped. The inner peripheral portion 50 of the upper skin 5
Is a straight line portion 51 and a curved line portion 52 and a straight line portion 51 and a curved line portion 5
It has a transition part 53 located between the two. The edging tape 6 is sewn to the inner peripheral edge portion 50. Edging tape
The sewing machine used in the sewing work of No. 6 is a straight stitch. Therefore, there is no particular problem when the edging tape 6 is sewn to the straight line portion 51 of the inner peripheral edge portion 50. However, if the sewing edging tape 6 from transition portion 53 toward the curved portion 52 is directly sewing the sewing machine straight stitch
You can not wear, need to work to move the carapace 5 in the "U" shaped by hand
, And the thereby border tape 6 along an inner peripheral edge 50 is sewn. The task of sewing the border tape 6 to the carapace 5, including such work is, it is possible to some extent even if there is no enough experience by multiplying the time. However, the work efficiency is poor, and it is necessary to perform the work in a short time. In this case, some skill is required. By the way, in recent years, it has become difficult to secure young workers. On the other hand, the number of skilled workers tends to decrease due to retirement.
Therefore, the efficiency of the sewing work as sewing products sufficient quality even unskilled workers can be obtained is desired.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to use a straight stitch sewing machine to easily trim a edging tape on the inner peripheral edge of the upper of a shoe.
It is to provide a method and a device for sewing .

[0004]

The structure of the present invention, which was devised to achieve the above object, is as follows. In the first invention, direction
There is a curved portion between the intersecting straight portions and the straight portions, and the curved portion is approximately U.
The inner circumference of the upper of a shoe having an inner peripheral edge formed in a shape
Sew the edging tape on the edge using a straight stitch machine
A method of this method, while holding the carapace during increase a pressing force is applied to the carapace during presser and <br/> lowered to press the instep between the pressing roller to release the person pressing force instep Straight part of
Step of sewing the edging tape to the upper part, raising the presser roller
Allow the upper to rotate freely around the sewing needle
This bordered step, the curved portion to the seam allowance guide gauge to
To maintain the seam allowance, and also the seam allowance guide gauge and sewing supplement
While controlling the movement of the upper with auxiliary equipment, the edging tape is attached to the curved portion.
Using a straight stitch machine, including the
For sewing edging tape around the inner peripheral edge of the upper of a shoe
Is the law . In the second invention, a sewing machine with a straight stitch is used.
Sew the edging tape around the inner edge of the upper of the shoe using
An apparatus, the apparatus comprising a retainer for pressing the instep, and the lifting means of the pressing roller is provided on the sewing machine, the are elevated by raising <br/> descending means, a pressing force to carapace during descent in addition, a pressing roller for releasing an equivalent pressing force at the time of rising, Jia
A sensing mechanism that senses contact or non-contact with the skin and operates the elevating means accordingly, and a seam allowance guide gauge that is provided in the vicinity of the up and down sewing needle and determines the seam allowance by contacting the inner peripheral edge of the instep. and sewing aids to control the movement of the carapace in cooperation with the seam allowance guide gauge when sewing the curved portion of the inner peripheral edge of the carapace, is provided with a table, the edges
Includes an escape prevention plate that prevents the tape from escaping.
Use a straight stitch sewing machine on the inner peripheral edge of the shoe upper.
This is a device for sewing the edging tape . Examples of the lifting / lowering means for the pressing roller include a device using fluid such as an air cylinder, or a device using electric equipment such as a solenoid. Work When sewing the edging tape on the straight part, hold the upper with the presser foot and the presser roller. Edging on the upper
If the sewn part of the brow covers the straight part to the curved part,
The end surface of the edge portion is in contact with the sensing mechanism. This activates the lifting means, the pressing roller is increased, carapace will so that can be freely rotated about the needle. Then the curved portion of the carapace is brought into contact with the seam allowance guide gauge, it is sewn to keep the seam allowance is guided by the seam allowance guide gauge. It should be noted that, when sewn edging tape to the curved portion of the carapace, but the carapace is to try complex movement, such as interfering with the sewing, seam allowance Gaidoge
It is controlled by a sewing aid that controls the movement of the upper in cooperation with the cage . When the sewn part of the edging tape moves from the curved part to the straight part, the upper separates from the sensing mechanism, which lowers the presser roller, and while pressing the upper with the presser tool and the presser roller, sew the edging tape on the linear part. To wear .

[0005]

The present invention will be described in more detail based on the embodiments shown in the drawings. Figure 1 is a perspective view showing a preferred equipment for Ru <br/> be sewn edging tape carapace shoes, linear portion sewn
It represents the wearing state. In FIG. 1, reference numeral 100 indicates a sewing machine body of straight stitch. Sewing machine body 100 includes a lift rod 101 which moves up and down in the table T, and sewing. The lift rod 101, the needle 102 to the uppers 5 and border tape 6 sewn is attached. The sewing machine main body 100 has a retainer 103 for pressing the upper . A notch 104 is formed inside the presser foot 103. The seam allowance guide gauge 3 facing the notch 104
Is erected on the table T. The seam allowance guide gauge 3 sets the seam allowance of the upper 5. Reference numeral 105 denotes an escape prevention plate that prevents the edging tape 6 from escaping. Sewing machine body 10
An elevating means 1 for the pressing roller is provided at the tip of the head 0. The elevating means 1 includes an air cylinder 10, a piston rod 11, and an air hose 12 for sending compressed air to the air cylinder 10, and the air cylinder 10 is arranged so that the piston rod 11 is on the lower side.
An elevating body 20 is attached to the rod head of the piston rod 11. A pressing roller 2 is attached to the lower end of the lifting body 20 by a shaft 21. The presser roller 2 is moved up and down by the piston rod 11, and when it is lowered, the upper
A pressing force is applied to the upper skin 5 is, to release the pressing force at the time of rising. To further the inside of the seam allowance guide gauge 3, the carapace 5
A sensing mechanism 4 is provided for sensing contact with or non-contact with and operating the elevating means 1 accordingly. The sensing mechanism 4 includes a limit switch 40 and a limit switch 40.
It has a fixed shaft 41 standing upright in the vicinity of, and a strip-shaped swinging body 42 attached to the fixed shaft 41 so as to swing. A spring (not shown) is interposed between the oscillating body 42 and the fixed shaft 41, and the oscillating body 42 is normally urged in a direction away from the limit switch 40. Further on the inner side of the sensing mechanism 4, sewing aids 7 are disposed. Sewing aid 7, an attachment substrate 70, attachment substrate 70
Auxiliary tool body 71 in the shape of a cylinder standing upright at one end of the
And a stopper 72 extending horizontally from the tip of the auxiliary device body 71. An adjustment groove 73 is formed in the attachment substrate 70 in the length direction, and a screw 74 is formed in the adjustment groove 73.
And is fixed to the table T by penetrating therethrough. In addition, 106 is
A sensor for sensing the presence or absence of carapace, we use phototube, the sewing work carapace finished is removed from the upper reflector stretched over the table T (not shown) senses this The operation of the sewing machine is stopped. Operation The operation will be described with reference to FIGS. 2 and 3. Figure 2 is shifted to the curve section from the sewing <br/> portion is straight portion, perspective representation of the sewing condition of the curved portion, and FIG. 3 shifts to the linear portion from the sewing portion is curved portions, straight it is a perspective view showing a sewing condition of the parts. (1) As shown in FIG. 1, the task of sewing edging tape to the generally "U" shape is formed in the linear portion of the carapace 5, performed while pressing the carapace 5 presser 103 and the presser roller 2 . (2) transition portions 53 sewn portion of upper skin 5 from the straight portion 51
When such a curved portion 52 through the inner peripheral edge 50 of the carapace 5
Comes into contact with the tip end portion 43 of the rocking body 42, and the rocking body 42 moves to the limit switch 40 side. This sends a signal to the control solenoid valve (not shown), and the air cylinder 10
To the piston rod 11 to raise the presser roller 2. This carapace 5 becomes so that can be freely rotated about the needle 102 that is raised and lowered continuously. Then curved portion 52 of the carapace 5 contacts the seam guide gauge 3, is sewn by keeping the seam allowance while being guided by the seam allowances guide gauge 3. Jia skin 5 is generally "U" shaped, the sewing machine main body 100 is operated to perform the straight stitch, to the curved portion 52 of the carapace 5 stitching, not yet sewn part complex movements the to be trying to obstruct the sewing work. However, the table T Ri Thea fixed sewing aid 7, in cooperation with the seam allowance guide gauge 3
The movement of the upper 5 is controlled. (3) sewn curved portion 52 as shown in FIG. 3 is completed,
When sewing position moves from the curved section 52 in the straight portion 51, the carapace 5
The inner peripheral edge portion 50 of is separated from the tip end portion 43 of the rocking body 42. As a result, the oscillating body 42 moves in a direction away from the limit switch 40, sends a signal to a control solenoid valve (not shown), sends air to the air cylinder 10, lowers the piston rod 11, and lowers the presser roller 2. .
This stitching straight portion 51 of the carapace 5, retainer 10
3 and the pressing roller 2 is performed while pressing the carapace 5. The present invention is intended to be limited to the illustrated embodiment rather than,
And it can be modified variously within the scope of the patent claims.

[0006]

As is apparent from the above description, the present invention
According to the sewing machine using a straight stitch, the inner peripheral edge of the upper of the shoe
The edging tape can be easily sewn on . Therefore, in terms of quality and quantity, even unskilled workers can do the same work as skilled workers.

[Brief description of drawings]

1 is a perspective view showing an apparatus suitable for you sewn edging tape carapace of the shoe, represents a sewing condition of the linear portion.

[Figure 2] sewing position is shifted to the curved portion from the straight part, is a perspective view showing a sewing condition of the curved portion.

[Figure 3] sewing position is shifted to the linear portion from the curved portion, is a perspective view showing a sewing condition of the straight line portion.

[Explanation of symbols]

1 lifting means 2 presser roller 3 seam guide gauge 4 sensing mechanism 7 sewing aids 100 sewing machine

Claims (2)

[Claims] 1. A straight line portion facing each other and between the straight line portions.
Shoe having a curved portion and a U-shaped inner peripheral edge portion
Using a straight stitch sewing machine on the inner peripheral edge of the upper
A method of sewing a tape taken up, the method, press instep with the pressing roller during descent and retainer for pressing the instep to release the pressing force at the time of increasing the pressing force added to the carapace
While sewing, sew the edging tape to the straight part of the upper
The upper and lower of the presser roller are raised and the upper is free around the sewing needle.
Step to make it possible to turn to the right direction, keep the seam allowance by bringing the curved part into contact with the seam allowance guide gauge
At the same time, move the upper with a seam allowance guide gauge and a sewing aid.
Stitching the edging tape to the curved section while controlling the
Using a straight stitch sewing machine , including
How to sew a tape. 2. A shoe sewing machine using a straight stitch sewing machine
A device for sewing edging tape on the inner peripheral edge,
Device retainer that presses the instep (103), a pressing roller of the lifting means (1) which is provided on the sewing machine body (100) is elevated by said elevating means (1), carapace during descent
A pressing force is applied to, at the time of rising and the pressing roller (2) to release the person pressing force senses contact or non-contact with the uppers, thereby sensing mechanism for actuating said lifting means (1) (4) When, it is provided with the vicinity of the needle (102) up and down, the carapace
A seam allowance guide gauge (3) that determines the seam allowance by bringing the inner peripheral edge into contact with the seam allowance guide when the curved portion of the inner peripheral edge of the upper is sewn.
A sewing supplement that controls the movement of the upper in cooperation with the gauge (3)
It is provided on the auxiliary equipment (7) and the table (T), and the edging tape (6) is released.
Using a straight stitch sewing machine, including an escape prevention plate (105) which has been prevented from shaving, and edging the inner peripheral edge of the upper of the shoe.
A device for sewing tape .