JP2002273083A - Folding tape feeder for sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding tape feeder for a sewing machine that uniformly sews a tape to a body fabric, shorten working time and reduce burden on a worker. SOLUTION: A guide plate 15 is provided between a tape delivery section 11 and a tape rest 10, and a cutting edge section 12 and a tape folding cylinder 23 are installed in the tape rest 10 so as to simultaneously implement fixed size cutting and double folding of a tape 8. A folding tape 18 pushed down to the lower side of a groove hole 7 by a penetration rod 27 is moved to the sewing machine 1 side by an insertion cylinder 32 and inserted into below a pressing metal 5, after pinched by a tape clamp 30 and the clamp 30 is rotated 90 degrees by a rotating cylinder 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding tape feeding device for a sewing machine which is used for folding a sewing tape at a predetermined position and automatically inserting the sewing tape below a presser foot of the sewing machine.

[0002]

2. Description of the Related Art Conventionally, in the sewing process of clothes, there is a work process in which a belt-shaped tape is bent and the tape is sewn to a body cloth with a sewing machine. For example, as shown in FIG. 10, when the sewn product is a swimsuit 34, rubber tape hooks 8 are sewn at four edges on both sides of the chest, and a hook 35 a of the pad 35 is hooked on this. ing. Then, when such a tape is bent and sewn to the body cloth with a sewing machine, it is usually performed in the following work process. That is, first, a rubber tape is sent out to a tape cutting section by a pulse motor, and a large number of the rubber tapes are cut into a predetermined size, for example, 18 mm in length by a tape cutter device. A large number of cut tapes are continuously collected at a predetermined location. Next, the tape is folded in two in the vertical direction one by one with the horizontal line as a fold. In this case, 2
Since the folded tape is so small that it is difficult to grasp it by hand, after bending the tape by hand, an operator handles the folded tape with tweezers. Then, with the bending tape sandwiched between tweezers, the body cloth is carried by hand and inserted under the presser foot of the sewing machine in which the body cloth is set in advance. When the tape is conveyed to the lower side of the presser foot, the tape is moved with tweezers so that the direction of the tape matches a predetermined direction, and the tape is set at the sewing position of the body cloth. After setting, sew the tape on the body fabric with a sewing machine.

[0003]

However, the manual folding and insertion setting of the tape as described above has the following problems. (1) Folding and insertion of tapes Since the setting work is performed based on the intuition and experience of a skilled worker, the position and size of the bent portion of the tape, and the insertion position and direction of the tape into the body cloth are determined. It becomes inaccurate or non-uniform, causing variations in quality and reducing the commercial value. (2) A long cycle time of 30 seconds or more is required to perform a series of operations from the tape bending process to the insertion setting process, and the work efficiency of the entire process is poor. (3) The task of manually bending the tape into two small pieces, inserting and setting the folded tape with tweezers, and positioning it requires careful attention and imposes mental fatigue on the worker. The present invention has been made in view of the above problems, and an object of the present invention is to automate the operation of bending and inserting a tape, make the tape sewing finish on the body fabric uniform, and reduce the process time. It is an object of the present invention to provide a bending tape supply device for a sewing machine which can perform the above.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a tape mounting portion on which a tape is mounted and which has a tape bending slot, and a tape sending-out device for feeding the tape to the tape mounting portion via a guide plate. A tape cutting portion for cutting the tape to a fixed size, and a tape bending portion for fitting the groove into the slot and bending the tape. The first feature is that a tape insertion portion for inserting a bending tape below the presser foot of the sewing machine is provided below. A second feature is that a tape pressing portion for pressing and holding the tape is provided on the guide plate side of the tape mounting portion. In addition, the tape insertion part is a tape clamp that clamps the bending tape,
A third feature is that it comprises a rotary cylinder for rotating the tape clamp, and an insertion cylinder for moving the rotated tape clamp to the presser side of the sewing machine.

The tape feeding section has a rotatable bobbin around which the tape is wound, and intermittently feeds the tape to the tape mounting section. A tape guide plate is provided between the tape sending section and the tape placing section, the tape guide plate extending to near the presser foot of the sewing machine.On the upper side of the guide plate, a tape holding cylinder and a tape holding cylinder for holding the tape on the guide plate are provided. Provide a non-return cylinder. The non-return cylinder suppresses reverse movement of the tape during tape feeding. In addition, the tape holding cylinder prevents tape displacement during tape cutting and bending.
An elongated plate-shaped tape pressing plate is attached to the rod portion of the tape pressing cylinder.

The slot extends in the width direction of the tape,
It is formed at a predetermined position on the tape mounting portion near the presser foot.
The tape placement section is provided with a tape cutting section and a tape bending section. The tape cutting section cuts the leading end of the tape to a predetermined size, and the tape bending section bends the tape at a predetermined position. This tape bending part,
An elevating rod that fits through the slot is provided. The tape placed and set in the slot of the tape placement section is pushed down by the lifting rod and bent at the center of the tape. A tape insertion portion is provided below the tape bending portion so that the bent tape can be inserted below the presser foot of the sewing machine. The tape insertion unit includes a tape clamp, a rotary cylinder, and an insertion cylinder. The tape clamp holds the bent tape below the slot, and the rotary cylinder turns the tape clamp by a predetermined angle to change the direction of the bent tape in the horizontal direction. Further, the insertion cylinder inserts and sets the bending tape below the presser foot by moving the tape clamp toward the sewing machine.

In the folding tape feeding device for a sewing machine according to the present invention, the following series of operations are performed automatically. First,
The leading end of the tape sent from the tape sending section is placed near the slot of the tape placing section. Next, the tape is cut to a fixed size by the tape cutting portion, and at the same time, the tape is bent by the tape bending portion. In this case, the tape bent portion is fitted into the slot from above while the tape is held and fixed by the tape pressing portion. As a result, the tape set in the slot is depressed at the center in the longitudinal direction, and the tape is bent into a U-shape with the center as a fold.

The obtained bent tape is transported forward to the sewing machine side by the tape insertion portion, and is inserted and set below the presser foot. Specifically, the bending tape is pushed down below the slot by the lifting rod of the tape bending portion, and the lower portion of the bending tape is clamped by the tape clamp.
Then, the tape is clamped 90 degrees by the rotating cylinder so that the bending tape is changed from the vertical state to the horizontal state.
Rotate degrees. Thereafter, the tape clamp is advanced by the insertion cylinder to the sewing machine side, whereby the folding tape in the horizontal state is inserted and set below the presser foot, and after setting, the folding tape is sewn to the body fabric by the sewing machine. .

If this folding tape supply device is used,
Since a series of operations from the tape bending step to the tape insertion and setting step are automated by a machine, the bent portions and dimensions of the tape and the sewing finish of the tape on the body fabric can be reliably and uniformly performed. In addition, the operation from the bending of the tape to the setting of the insertion of the tape can be completed within one cycle of 5 seconds, and the operation time can be reduced to one-fifth as compared with the conventional manual operation. Further, since a series of work steps are labor-saving or automated, fine manual work by the operator is not required, and the worker is released from severe manual work.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. In the present embodiment, FIG.
Is bent, and then the folded rubber tape is automatically inserted below the presser foot of the sewing machine.

FIG. 1 is a perspective view showing an outline of a folding tape supply device for a sewing machine according to the present invention, FIG. 2 is a side sectional view of a main part of the folding tape supply device, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a perspective view of a main part showing the vicinity of a pressing cylinder of the bending tape supply device, FIG. FIG. 8 is a perspective view of a main part showing a relationship between the bending cylinder and the tape clamp of FIG. 6, FIG. 8 is a perspective view of a main part showing a state where the tape clamp of FIG. 7 is rotated half a turn, and FIG. FIG. 10 is a perspective view of a main part showing a state of sewing with a sewing machine.
FIG. 2 is a perspective view illustrating a folding tape and a swimsuit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a sewing machine having a main body upper part 2 and a main body lower part (material placing part) 3 which are elongated in the front-back direction FB in the figure. A sewing needle 4 and a presser foot 5 are attached to a lower portion of the front end of the main body 2.
A start switch 9 is provided.

Reference numeral 6 denotes a folding tape supply device arranged in parallel on one side of the sewing machine 1. Bending tape supply device 6
As shown in FIG. 2, a tape mounting table (tape mounting section) 10 on which a rubber tape 8 is mounted is provided.
At 0, a groove 7 for bending the tape perpendicular to the longitudinal direction of the rubber tape 8 is formed. In addition, the folding tape supply device 6 includes a tape feeding unit 11 that feeds the front end portion of the rubber tape 8 to the tape mounting table 10, and a guide plate 15 is laid between the tape feeding unit 11 and the tape mounting table 10. ing.

A cut knife (tape cutter) 12 and a tape bending cylinder 13 are arranged near the slot 7 in the tape mounting table 10. Cut knife 12
As shown in FIG. 5, the tape cutting cylinder 13 cuts the front end portion of the rubber tape 8 to a set size (18 mm in the present embodiment), as shown in FIG. Almost at the same time, the cut portion of the rubber tape 8 is bent. Further, a tape insertion unit 14 is provided below the tape mounting table 10,
As shown in FIG. 4, the tape insertion section 14 moves the bent rubber tape 18 in the direction L on the side of the sewing machine 1 and inserts it into the lower surface of the presser foot 5. Hereinafter, the components described above will be described in more detail.

The tape feeding section 11 has a rotatable bobbin 16 around which a rubber tape 8 is wound. An intermediate portion on the sending side of the rubber tape 8 is a tape feeder 19.
, And is intermittently fed to the tape mounting table 10 side (the front direction F side in FIG. 1) near the presser foot 5.

As shown in FIG. 2, the rubber tape 8 sent out from the tape feeder 19 without tension is connected to the right side position corresponding to the presser foot 5 of the sewing machine 1 via the guide plate 15 extending in the front direction F, that is, as shown in FIG. The tape is supplied to the slot 7 of the tape mounting table 10. As shown in FIG. 5, a tape holding cylinder 21 is installed to be able to move up and down substantially at the center of the guide plate 15, and the tape holding cylinder 21 is supported by a support member 22. A vertically long tape pressing plate 23 that is in contact with the upper surface of the rubber tape 8 is attached to the rod portion of the tape pressing cylinder 21, and the tape pressing plate 23 can integrally press and hold the rubber tape 8.

At the right side of the tape holding cylinder 21 in FIG.
5 are juxtaposed in the front-back direction FB. The dimensioning cylinder 24 allows the support member 22 to move in the front-rear direction only by a set value, and can change and adjust the set value as appropriate. The forward cylinder 25 moves the support member 22 intermittently in the forward direction F. Accordingly, the rubber tape 8 can be intermittently moved by a predetermined value in the direction F of the tape mounting table 10 by advancing the tape pressing cylinder 21 by the advancing cylinder 25.

A tape check cylinder 26 is provided at a predetermined interval on the back side B of the tape holding cylinder 21 so as to be able to move up and down.
Presses and fixes the rubber tape 8 in a timely manner,
To suppress the reversal of. Further, a tape bending cylinder 13 is provided at a predetermined interval on the front side F side of the tape pressing cylinder 21, and a vertically long thin plate-like lifting rod 27 that moves up and down is mounted on a rod portion of the tape bending cylinder 13. Is attached. The lifting rod 27 is
The tape mounting table 10 is fitted into the slot 7 so that it can be penetrated downward. The width of the lifting rod 27 is
It is almost equal to the width dimension.

As shown in FIG. 5, a lever-type cut knife 12 is provided at the rear end side of the tape mounting table 10 corresponding to the tape bending cylinder 13, and the left-end side pivotal attachment portion of the cut knife 12 has an L-shape. Is formed. Cut knife 1
A cut cylinder 29 that reciprocates in the left-right direction is connected to the upper side of the two pivot portions. Therefore, the cut knife 12 is inclined downward in the clockwise direction in FIG. 1 by the rightward operation of the cut cylinder 29, whereby the rubber tape 8 on the tape mounting portion 10 is cut.

A tape insertion portion 14 is provided below the tape mounting table 10 corresponding to the slot 7. The tape insertion section 14 includes a tape clamp 30, a rotary cylinder 31, and an insertion cylinder 32. As shown in FIG. 6 and FIG.
Is held below the slot 7. The tape clamp 30 is disposed in the same direction as the left-right direction LR in which the slot 7 extends, and has a pair of bar-shaped grips. Tape clamp 3
A clamp cylinder 33 that operates in the clamping direction of the tape clamp 30 is attached to a right end of the tape clamp 30. By the operation of the clamp cylinder 33, the pair of rod-shaped gripping portions are opened and closed so that the bending tape 18 can be clamped.

The rotary cylinder 31 is provided with a tape clamp 30.
The tape clamp 30 is connected to the right end of the tape clamp 30 and rotates the tape clamp 30 holding the bending tape 18 around a horizontal axis, so that the direction of the bending tape 18 is changed in the horizontal direction as shown in FIG. Has become. Further, the insertion cylinder 32 supports the rotating cylinder 31 and the tape clamp 30 so as to be drivable in the left and right direction, and the tape clamp 3
0 can be moved forward and backward with respect to the sewing machine 1. Therefore, by moving the tape clamp 30 to the left side of the sewing machine 1 by the insertion cylinder 32, the bending tape 18 can be inserted below the presser foot 5 while the bending tape 18 is kept horizontal.

Next, a series of operations of this embodiment will be described in the order of steps. First, the forward cylinder 25 advances in the front direction F in FIG.
1 descends to the rubber tape 8 side. Thus, the rubber tape 8 is pressed by the tape pressing cylinder 21. At this time, the dimensioning cylinder 24 moves forward together with the tape pressing cylinder 21 by a predetermined moving amount. Thereafter, the cutting knife 12 is lowered by the extension operation of the cutting cylinder 29, whereby the rubber tape 8 is cut to a fixed size. At this time, the tape holding cylinder 2
The 1 and dimensioning cylinder 24 returns to its original position.

On the other hand, almost simultaneously with the cutting of the rubber tape 8, the tape bending cylinder 13 descends.
As a result, after the elevating rod 27 descends toward the center (fold) of the rubber tape 8, the slot 7 of the tape mounting table 10 is
It fits in and penetrates. As a result, the rubber tape 8 is bent into two by the elevating rod 27 to form a U-shape. Thereafter, the tape bending cylinder 13 moves up to the original position.

Next, by operating the clamp cylinder 33, as shown in FIG. 7, the tape clamp 30 operates in the clamping direction, and the folded rubber tape 18 is clamped in the vertical direction. In this case, the lower third portion of the rubber tape 18 is clamped by the tape clamp 30. Then, the tape clamp 30 is rotated by 90 degrees by the operation of the rotary cylinder 31 while holding the bent rubber tape 18 therebetween. Then, the bent rubber tape 18 changes its posture to a horizontal state as shown in FIG. At the same time, the forward cylinder 25 moves back to the original position. On the other hand, sewing machine 1
On the side, a body cloth 34 to which the bent rubber tape 18 is to be sewn is prepared in advance, and this is set under the presser foot 5 of the sewing machine 1.

Next, the insertion cylinder 32 is operated by pressing the start switch 9 of the sewing machine 1. Then, the tape clamp 30 moves to the sewing machine 1 side, and the folded rubber tape 18 sandwiched between the tape clamp 30 moves to a position below the presser foot 5 and is inserted. After insertion, the bent rubber tape 18 is pressed by the presser foot 5. Thereafter, the clamp cylinder 33 is operated, and the tape clamp 30 is operated in the opening direction. Then, the bent rubber tape 18 is released from the tape clamp 30 and separated therefrom. Then, when the insertion cylinder 32 returns to the original position and the rotary cylinder 31 returns to the original rotational position, the tape clamp 30 also returns to the original vertical orientation.

While the insertion cylinder 32 returns to the original position, the sewing machine 1 automatically attaches the body cloth (swimsuit) 34 and the folded rubber tape 18 to the sewing cloth 1 on the sewing machine 1 side, as shown in FIG. The sewing is performed. After finishing the sewing, the presser foot 5 of the sewing machine 1 is raised.

Thereafter, the cylinders 13, 21, 29, 31, and 32 of the folding tape supply device 6 that has returned to the original position are subjected to the first three steps described above, that is, the rubber tape 8
Automatically perform the feeding and cutting process, the bending process, and the half-turning process of the bent rubber tape 18, and wait for the next insertion operation. Then, these series of operations are automatically repeated repeatedly as one cycle. According to the experiment, the cycle time of this one process was 5 seconds on average, and the working efficiency was remarkably improved.

If the folding tape supply device 6 for a sewing machine is used, the rubber tape 8 can be sent out and cut, bent,
Since all operations such as the insertion set can be automated, manual operations can be omitted, and the operator is freed from fine manual operations. In this case, since the rubber tape 8 is cut into the set dimensions and inserted and set in a predetermined direction below the presser 5 of the sewing machine, the sewn product becomes uniform, and there is almost no variation in dimensions and the like. Also, since one cycle can be completed within 5 seconds, the work time is about 5 times less than before.
It has been shortened to less than a factor of one.

Incidentally, the present invention is not limited to the above-described embodiment, and various application modifications are possible. For example, in the above embodiment, the tape was folded into a U shape. However, the tape was formed by forming two narrow slots in parallel and using a lifting rod that fits into the two slots. It is also possible to fold it into a W shape.

[0030]

As described above, according to the present invention, the tape is cut to a fixed size by the tape cutting portion, and the tape is bent by the tape bending portion fitted into the slot, and the bent tape is held by the presser foot of the sewing machine. The following excellent effects can be obtained by automatically inserting the lower part of the frame. (1) Since the tape cutting / bending process and the insertion setting process into the sewing machine can be automated by a machine, the setting accuracy of the processing dimensions and the processing position in the tape cutting / bending and insertion processes is increased, and the tape is applied to the body cloth. Sewing can be performed reliably and uniformly, and as a result, the quality of the sewn product is significantly improved. (2) The work time of one cycle from bending the tape to inserting it into the sewing machine can be reduced to about one-fifth as compared with the conventional manual work method, and the work efficiency is greatly improved. . (3) Since all the series of work steps are automated by a machine, the operator is freed from fine manual work requiring skill.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of a bending tape supply device for a sewing machine according to the present invention.

FIG. 2 is a side sectional view of a main part of the folding tape supply device.

FIG. 3 is a view as viewed from an arrow A in FIG. 2;

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a main part perspective view showing the vicinity of a tape holding cylinder of the folding tape supply device.

FIG. 6 is a main part perspective view showing the vicinity of a bending cylinder of the bending tape supply device.

FIG. 7 is a perspective view of a main part showing a relationship between a bending cylinder and a tape clamp of FIG. 6;

8 is a perspective view of a main part showing a state in which the tape clamp of FIG. 7 is rotated half a turn.

FIG. 9 is a perspective view of an essential part showing a state in which the folding tape is sewn on the body cloth.

FIG. 10 is a perspective view illustrating a folding tape and a swimsuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sewing machine 2 Main body upper part 3 Main body lower part (material placement part) 4 Sewing needle 5 Presser foot 6 Bending tape supply device 7 Tape bending slot 8 Rubber tape 9 Start switch 10 Tape mounting base (Tape placement part) 11 Tape Feeding part 12 Cut knife (tape cutting part) 13 Tape bending cylinder (tape bending part) 14 Tape inserting part 15 Guide plate 16 Bobbin 17 Roller 18 Folding rubber tape 19 Tape feeder 21 Tape holding cylinder (tape holding part) 22 Support Member 23 Tape pressing plate 24 Dimensioning cylinder 25 Forward cylinder 26 Tape check cylinder 27 Lifting rod 29 Cut cylinder 30 Tape clamp 31 Rotary cylinder 32 Insertion cylinder 33 Clamp cylinder 34 Body cloth (swimsuit) 35 35a hanging catch

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshiji Yamaguchi 683-1, Shimanouchi, Oaza, Miyazaki-shi, Miyazaki F-term (reference) in Tomiye Co., Ltd. 3B150 AA22 BB04 CE01 CE21 CE23 CE27 EE01 EE08 EH01 EH06 EH11 EH17 JA13

Claims (3)

[Claims] A tape mounting portion on which a tape is mounted, the tape mounting portion having a tape bending groove; and a tape feeding portion for feeding the tape through a guide plate to the tape mounting portion, wherein the tape mounting portion is provided. A tape cutting section for cutting the tape to a fixed size, and a tape bending section for fitting the groove into the slot and bending the tape. Below the tape bending section, a folding tape is held by a sewing machine. A folding tape feeding device for a sewing machine, comprising a tape insertion portion inserted below gold. 2. A folding tape feeding device for a sewing machine according to claim 1, wherein a tape pressing portion for pressing and holding the tape is provided on the guide plate side of the tape mounting portion. 3. A tape insertion unit comprising: a tape clamp for holding a bent tape; a rotating cylinder for rotating the tape clamp; and an insertion cylinder for moving the rotated tape clamp to a presser foot of the sewing machine. The folding tape feeding device for a sewing machine according to claim 1 or 2, wherein: