JPH075820Y2 - Bead sewing machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead sewing machine for forming a bead on a pocket mouth or the like of clothes.

[0002]

9 to 11 show a conventional bead sewing machine. The conventional bead sewing machine is used as follows. In this prior art example, a T-type ruler is used as a ruler so that both bead edges can be formed. However, when forming a bead edge, an L-type ruler can be used. Good. Air cylinders are used as the drive devices 11, 21 and 41 for operating the large pressers 1 and 2 and the T-type ruler 4, respectively.

First, as shown in FIG. 10, body cloth M
Is set at a predetermined position on the sewing machine table 10. At this time, the large pressers 1 and 2 and the T-type ruler 4 are the sewing machine table 1
It stands by at a position considerably above the upper surface of 0.

Next, the switch (usually a foot switch) 8 is operated in the first stage. Then, the drive device 11 is extended by the signal S ₁ from the controller 9 and the first clamp foot 1 located on the right side is moved downward as shown by the chain line 1 ′ (FIG. 10), and the body is held by the first clamp foot 1. A predetermined position of the cloth M is pressed and fixed on the sewing machine table 10. In this state, the body cloth M is wavy, and the body cloth M has wrinkles Ma.

While the body cloth M is pressed and fixed by the first clamp foot 1, the body cloth M is manually extended in the left direction (direction of arrow C) to remove the wrinkles Ma.

With the wrinkle Ma stretched (the body cloth M is stretched and held down by hand), the switch 8 is operated in the second stage. Then, the drive device 21 is expanded by the signal S ₂ from the controller 9, and the second large presser foot 2 on the left side presses the body cloth M at a predetermined position as shown in FIG. In this state, the cloth portion Mb between the large pressers 1 and 2 is maintained in a tension state.

Next, the tops of the two large pressers 1 and 2 are covered with a bedding N, and the switch 8 is operated in the third stage in this state. Then, the signal S from the controller 9
_The driving device 41 is extended by ₃ and the T-type ruler 4 is moved downward,
Then, the left and right folding plates 5 and 5 are advanced to fold the padding N along the shape of the T-shaped ruler 4 (state shown by a chain line in FIG. 11).

Then, when the switch 8 is operated in the fourth stage, both the large pressers 1 and 2 are moved to the sewing machine sewing portion 6 side while holding the body cloth M and the cloth cloth N (at this time, the cloth cloth N is T Removed from the ruler 4), and the sewing needle 6 there
After the two perforations are made by 1 (FIG. 9), the perforations are sent to the opening / incision part 7 where the center knife 71 and the corner knife (not shown) cut the opening between both perforations ( Both beads are formed).

After that, the respective operating parts are respectively returned to the initial positions and stand by for the next bead forming operation.

By the way, in the state where the body cloth M is pressed and fixed by the first large presser 1 as described above, wrinkles Ma of various sizes are formed on the body cloth M, and the portion Mb for forming the bead is formed.
With the wrinkle, move down the second clamp foot 2
If is pressed and fixed, it becomes impossible to sew or cut the sewing machine at an accurate position in the sewing machine sewing process and the opening cutting process (a defective product is generated). Therefore, in this kind of bead sewing machine, the body material M is sewn with the first large presser foot 1.
It is necessary to perform the wrinkle-rolling work of the portion to be formed with the bead Mb before the second presser foot 2 is pressed down and fixed.

[0011]

However, in the above-mentioned conventional bead sewing machine, after the body cloth is fixed by the first clamp foot 1, the wrinkles Ma of the bead forming scheduled portion Mb of the cloth can be automatically removed. This is not possible, and in the past, the wrinkles were extended manually. Therefore, the wrinkle spreading work is troublesome, and moreover, the work is time-consuming and requires skill to spread the wrinkle cleanly. Further, until the body cloth M is pressed by the second large presser 2, it is necessary to keep the wrinkle in a stretched state, that is, to tension the cloth and hold the cloth by hand on the sewing machine table. When the hand holding the material is in the up and down position of the second clamp foot 2, there is a problem that the hand is hit by the second clamp foot 2.

In view of the problems of the above-mentioned conventional bead sewing machine, the present invention makes it possible to automatically perform the wrinkle spreading work performed after the body cloth is pressed by the first large presser foot, and thus the wrinkle spreading work is performed. It is an object of the present invention to provide a bead sewing machine that can be easily, efficiently and safely performed.

[0013]

According to the present invention, the body cloth set on the sewing machine table is clamped by a first clamp foot and a second clamp foot, which are arranged side by side at predetermined intervals on the right and left sides, and then the presser foot is pressed. After superimposing a bead cloth at a predetermined position on the body cloth and then folding the bead cloth along a T-shaped or L-shaped ruler, the body cloth and the bead cloth are removed from the ruler and the sewing process is performed. In a bead sewing machine configured to form a bead by sequentially moving to an opening incision step side, a wrinkle spreading device having a telescopic cylinder and a pressing member that is moved forward and backward by the telescopic cylinder is provided, and the wrinkle rolling device is provided. Means that the telescopic cylinder expands and contracts in the left-right direction, and when the telescopic cylinder is contracted, the pressing member is located outside the elevating position of the first clamp foot and when the telescopic cylinder is extended. The pressing member can press the upper surface between the large pressers of the body cloth set on the sewing machine table toward the second large presser side to a position immediately below the inner edge of the second large presser. It is characterized by being installed.

[0014]

In the bead stitch sewing machine of the present invention, when the telescopic cylinder of the wrinkle stretching device is contracted, the pressing member is outside the ascending / descending position of the first large presser and the wrinkle stretching device is the first large. It does not interfere with the lifting operation of the work clamp.
Further, when the telescopic cylinder of the wrinkle stretching device is extended while the predetermined position of the body cloth is pressed and fixed by the first large presser, the pressing member advances and the body cloth located between the two large pressers is pushed by the pressing member. It acts so as to push and extend the upper surface to a position immediately below the inner edge of the second clamp foot. Then, in that state, the second clamp foot is moved downward to press the body cloth at the position closest to the pressing member with the second clamp foot, and then the telescopic cylinder is contracted, so that the body cloth is provided between the two pressers. It will be maintained in the extended state. After that, a ball cloth is placed on the upper parts of both the large pressers, the ball cloth is folded along a ruler, and the body cloth and the ball cloth are sequentially moved to the sewing machine sewing process and the opening incision process side, whereby the ball edges can be formed automatically. .

[0015]

As described above, in the bead sewing machine of the present invention, the body material located between the two large pressers can be automatically extended by the wrinkle extending device. The unrolling work becomes extremely easy, and since it is not necessary to put a hand on the wrinkle unrolling work, there is an effect that the wrinkle unrolling work can be performed safely without the hand being hit by the second clamp foot.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 8. In a bead sewing machine of this embodiment, a T-type ruler is used as a ruler 4, and a bead on each side of the opening. It is used for forming both bead edges. In addition, when forming a bead only on one side of the opening,
An L-shaped ruler 4 may be used.

The bead sewing machine of this embodiment has a sewing machine table 10 and a sewing machine table 10 which is individually elevated and lowered on the sewing machine table 10 at the same time in the front-back direction (arrows AB in FIG. 1).
Direction 1) first clamp foot 1 and second clamp foot 2
And a wrinkle spreading device 3 for extending wrinkles between the large pressers 1 and 2, a ruler (hereinafter, referred to as a T-type ruler) 4 that serves as a guide for folding the woven cloth N, and a woven cloth N as a T-type ruler. A pair of left and right folding plates 5 and 5 for folding along 4, a pair of sewing needles 61 for sewing the body cloth M and the ball cloth N, a center knife 71 for opening and incising, and various operating parts. The controller 9 for controlling has a basic configuration.

The first large presser foot 1 and the second large presser foot 2 each have an appropriate length in the front-rear direction and are separated by a predetermined distance (for example, about 4 to 7 cm) between the inner edges 1a and 2a. They are juxtaposed. The first clamp foot 1 is located on the right side (arrow D side), and the second clamp foot 2 is located on the left side (arrow C side). Further, both of the large pressers 1 and 2 are supported by a moving body (not shown), and can be moved forward and backward together with the moving body on the sewing machine table 10 in the front-back direction (arrow AB direction) at the same time. There is. Further, each of the large pressers 1 and 2
Can be individually raised and lowered by the drive devices 11 and 21. In this embodiment, air cylinders are used as the drive devices 11 and 21, respectively.

When the drive units 11 and 21 are in the contracted state, the large pressers 1 and 2 are located considerably above the upper surface of the sewing machine table 10 as shown in FIG. When the driving devices 11 and 21 are extended, the body cloth M can be pressed onto the sewing machine table 10 as shown in FIG.

Further, rubber plates 15 and 25 for increasing the frictional force with the body cloth M are attached to the lower surfaces of the large pressers 1 and 2, respectively. The upper surface of the sewing machine table 10 is processed to make the body cloth M slippery with respect to the surface of the sewing machine table, and the body cloth M pressed by both the large pressers 1 and 2 is the large presser 1 , 2 can be smoothly slid on the table surface of the sewing machine.

The wrinkle spreading device 3 has a telescopic cylinder 31 and a pressing member 32 that can be moved forward and backward by the telescopic cylinder 31. An air cylinder is used as the telescopic cylinder 31. In addition, the pressing member 32 has a considerable length (for example, 20 to 30) in the front-rear direction (arrow AB direction).
about cm).

The wrinkle spreading device 3 has a telescopic cylinder 31.
Is installed in such a manner that the telescopic cylinder 31 is supported by a bracket 62 fixed to the sewing machine head 60 in a state in which the telescopic cylinder 31 extends and contracts in the left-right direction (direction of arrow CD) and slightly obliquely downward (angle of about 15 to 20 °). ing. Further, in the wrinkle spreading device 3, in the contracted state of the telescopic cylinder 31, the pressing member 32 is retracted to the outside (right side) from the elevating position of the first clamp foot 1, as shown in FIG. Does not interfere with the lifting operation of the first clamp foot 1, while
In the extended state of the telescopic cylinder 31, as shown in FIGS. 5 and 6, the pressing member 32 is installed so that it can press the body cloth M located immediately below the inner edge 2a of the second clamp foot 2. ing.

The T-type ruler 4 can be moved up and down by a drive unit 41 between the large pressers 1 and 2 at the forward position (arrow A side). In this embodiment, an air cylinder is also used as the driving device 41 for the T-type ruler.

The drive device 11 for the first clamp foot 1, the drive device 21 for the second clamp foot 2, the telescopic cylinder 31 of the wrinkle spreading device 3, and the drive device 41 for the T-type ruler 4 are respectively electromagnetic valves 13. , 23, 33, 43.
These electromagnetic valves 13, 23, 33 and 43 are switched and operated by signals T _{1 to} T ₄ issued from the controller 9, respectively. In addition, these electromagnetic valves 13, 23,
In the illustrated example, the three-position switching valves 33 and 43 use a three-position switching valve, and when the actuator moves downward from the neutral position, the drive device is operated toward the extension side, and when the valve is moved upward from the neutral position, the drive device moves toward the contraction side. It can be operated. The signal input to the controller 9 is performed by a switch (foot switch) 8.

The folding plates 5 are provided on the first large presser foot 1 and the second large presser foot 2, respectively, and can be moved back and forth in the left-right direction (direction of arrow CD) by a driving device (not shown). .

In this embodiment, a guide plate 64 made of an elongated leaf spring material is provided directly below the second large presser foot 2 on the sewing machine table 10. This guide plate 64
Is used when setting the body cloth M with darts, and has a curved shape that bulges upward as shown in FIG. 2 in a natural state. Then, when the body cloth M with darts (the vicinity of the dart base is convex due to the formation of the darts) is set, the convex portion (the lower surface is concave) of the body cloth M. ) Is supported from below by a guide plate 64 so that small wrinkles are less likely to occur in the portion. The guide plate 64
When the second clamp foot 2 moves downward, it is pressed by the lower surface of the second clamp foot 2 and extended in a plane shape as shown in FIG. It does not become an obstacle.

The sewing needle 61 is provided on the sewing portion 6 of the sewing machine which is located on the extension line on the rear side (arrow B side) of the downward movement position of the T-type ruler 4, and is removed from the T-type ruler 4 as described later. The two fabrics (ball cloth N and body fabric M) that can be moved rearward are sewn in two rows at predetermined positions with a predetermined space between them.

The center knife 71 is provided in the opening incision portion 7 which is located on the extension line further rearward of the position where the sewing needle 61 is installed, and cuts between the two perforations stitched by the sewing needle 61. is there. In addition, this center female 7
1 A corner knife (not shown) further behind the installation position
Is installed so that both ends of the opening formed by the center knife 71 can be cut out in a wedge shape.

In the illustrated embodiment, the wrinkle spreading device 3
Other constituent elements except for can be replaced with those having a conventionally widely used structure, and are not limited to the structures of the illustrated embodiments.

The method of use and the operation of the bead sewing machine of this embodiment will be described.

(1) First, as shown in FIG. 4, the body cloth M is set at a predetermined position on the sewing machine table 10. At this time, the large pressers 1 and 2 and the T-type ruler 4 are sewn on the sewing machine table 10.
Standing at a position quite above the upper surface of the. Also, while the large pressers 1 and 2 are in the retracted position (arrow B side), the body cloth M
By setting each, the large pressers do not get in the way, and the setting work becomes easy. Further, when the body cloth M with darts is used, the darts root portion is convex upward, but the convex portion is placed on the guide plate 64 and maintained in the convex state ( Small wrinkles are less likely to occur).

(2) Next, when the switch (foot switch) 8 is operated in the first stage from the state shown in FIG. 4, the electromagnetic valve 13 is operated downward by the signal T ₁ from the controller 9 for the first clamp foot 1. The drive device 11 of is expanded. Then, the first large presser foot 1 moves downward as shown by the chain line 1'in FIG. 4, and the predetermined position of the body cloth M is pressed and fixed on the sewing machine table 10 by the first large presser foot 1. In this state, the body cloth M is wavy, and the body cloth M has wrinkles Ma.

(3) When the switch 8 is operated in the second stage while the body cloth M is pressed and fixed by the first clamp foot 1, the electromagnetic valve 33 is operated downward by the signal T ₂ from the controller 9 and wrinkles are spread. The telescopic cylinder 31 of the device 3 is extended. Then, as shown in FIG. 5, the pressing member 32 is moved to the second position.
The upper surface of the body cloth located immediately below the inner edge 2a of the large presser 2 is pressed diagonally downward, and the material Mb located between the two large pressers is extended in the left direction (arrow C direction), and the wrinkle Ma between them is provided. (FIG. 4) is removed.

(4) Next, using the pressing member 32, both the large pressers 1 and 2
When the switch 8 is operated in the third stage with the wrinkles just below the surface, the electromagnetic valve 23 is operated downward by the signal T ₃ from the controller 9 and the drive device 21 for the second clamp foot 2 is operated.
Is stretched. Then, as shown in FIG. 6, the second clamp foot 2 moves downward, and the second clamp foot 2 presses the body cloth M at a predetermined position. At this time, the telescopic cylinder 31 of the wrinkle spreading device 3 is still in the expanded state, and the material Mb between the large pressers 1 and 2 is pressed and fixed by the large pressers 1 and 2 in the expanded state. Immediately after the second clamp foot 2 is moved downward (after the timer is set), the electromagnetic valve 33 for the wrinkle spreading device 3 is operated to be moved upward, and the telescopic cylinder 31 is immediately contracted. At this time, the pressing member 32 retreats, but the pressing member 32 crosses above the first clamp foot 1 in the downward movement position to the arrow D side, and the press member 32 collides with the first clamp foot 1. There is no such thing.

(5) Next, as shown in FIG.
When the upper surface of the two large pressers is covered with the bead cloth N over two, and the switch 8 is operated in the fourth stage in that state, the electromagnetic valve 43 is operated downward by the signal T ₄ from the controller 9 and T
The drive device 41 of the ruler 4 is extended. Then,
As shown in FIG. 8, the T-type ruler 4 moves downward to press the pad cloth N,
Subsequently (after setting the timer), both folding plates 5 and 5 move forward to fold the padding N along the outer surface of the T-type ruler 4.

(6) When the switch 8 is operated in the fifth step, both the large pressers 1 and 2 are moved to the sewing machine sewing section 6 side while holding the body cloth M and the woven cloth N (at this time, the woven cloth). N is removed from the T-type ruler 4), and there the sewing needle 6
After the double perforation is made by 1 (FIG. 1), the perforation is sent to the opening / incision part 7 where the center knife 71 and a corner knife (not shown) cut the opening between the perforations (FIG. 1). Both beads are formed).

(7) After that, the respective operating parts are returned to the respective initial positions and stand by for the next bead forming operation.

As described above, in the bead sewing machine of the illustrated embodiment, the material of the bead forming portion Mb of the body material M can be automatically stretched by the wrinkling device 3, so that the wrinkling is performed. Eliminates the need for manual work. Therefore, the wrinkle spreading work can be easily performed without requiring skill, and the work can be performed safely (there is no need to hit the hand with the second clamp foot as in the conventional case).

[Brief description of drawings]

FIG. 1 is a partial plan view of a bead sewing machine according to an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view of the bead sewing machine of FIG.

FIG. 3 is a flowchart showing an operation sequence of the bead sewing machine of FIG.

4 is an enlarged sectional view taken along the line IV-IV in FIG.

5 is a first state change diagram of FIG. 4. FIG.

6 is a second state change diagram of FIG. 4. FIG.

FIG. 7 is a third state change diagram of FIG. 4;

FIG. 8 is a fourth state change diagram of FIG. 4;

FIG. 9 is a partial plan view of a conventional bead sewing machine.

10 is an enlarged cross-sectional view taken along line XX of FIG.

11 is a state change diagram of FIG.

[Explanation of symbols]

1, 1 is the first clamp foot, 2 is the second clamp foot, 3 is a wrinkle spreading device,
4 is a ruler (T-type ruler), 5 is a folding plate, 6 is a sewing part for sewing, 7 is an opening incision part, 10 is a sewing table, 31 is a telescopic cylinder, 32 is a pressing member, M is a body cloth, and N is a pad cloth. Is.

Claims (1)

[Scope of utility model registration request] 1. A presser foot with a first presser foot (1) and a second presser foot (2), which are juxtaposed at predetermined positions on the left and right of a body cloth (M) set on a sewing machine table (10). Then, after superimposing a bead cloth (N) at a predetermined position on the body cloth (M), and then folding the bead cloth (N) along a T-shaped or L-shaped ruler (4), A bead sewing machine in which a bead is formed by removing the body cloth (M) and the bead cloth (N) from a ruler (4) and sequentially moving them to a sewing machine sewing process and an opening incision process side. A wrinkle spreading device (3) having a telescopic cylinder (31) and a pressing member (32) that is moved forward and backward by the telescopic cylinder (31), the wrinkle spreading device (3) comprising the telescopic cylinder (31) Expands and contracts in the left-right direction, and the expansion cylinder (3 The pressing member during reduction) (32) is positioned outside the vertical position of the first Daiosae (1), and the telescopic cylinder (3
When the pressing member (32) is set on the sewing machine table (10) during extension of 1), the upper surface between the two large pressers (1, 2) of the body cloth (M) is set to the second large presser (2). A bead sewing machine, which is installed so that it can be pressed toward the second large presser (2) side to a position immediately below the inner edge of the sewing machine.