JP2000262787A - Belt loop supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt loop supply device capable of easily forming a fullness. SOLUTION: A tape material supply means comprises a tape material delivery means 33 comprising a delivery roller rotatably driven for delivering a tape material toward a belt loop forming position located near a sewing position, and a tape material drawing-out means 34 comprising a grip arm 36 driven movably in the forward and backward directions for griping the tape material to draw out the same toward the belt loop forming position, and a fullness forming means 90 comprises a receiving plate for fullness, for supporting a longitudinal central portion of a belt loop from its lower side, and a fullness formation driving means 98 vertically moving the receiving plate for fullness, and being vertically movable by the force smaller than the tape material gripping force of the tape material delivery means 33 and the tape material drawing- out means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt loop supply device, and more particularly, to a belt loop supply device capable of forming a fullness in a belt loop.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a belt loop sewing machine which can sew a large number of belt loops through which a belt is inserted on the waist of various sewing products such as jeans, pants and skirts. The loop sewing machine is provided with a belt loop supply device that supplies a belt loop to a sewing position of the belt loop sewing machine.

FIGS. 12 and 13 show, for example, Japanese Unexamined Patent Publication No.
No. 17470 discloses an example of a belt loop supply device used for a conventional belt loop sewing machine.
Is disposed on the side of the sewing machine main body 2A of the belt loop sewing machine 2 and used.

The sewing machine main body 2A is, for example, a two-needle cycle sewing machine. A sewing machine bed 3 is provided at a lower portion, and a sewing machine arm 4 is provided at an upper portion thereof in parallel with the sewing machine bed 3.
At the desired position on the lower surface of the free end of the sewing machine arm 4 called the sewing machine head, two needles 5 and 5 are provided in parallel along the longitudinal direction of the sewing machine arm 4. Have been. Each of the needles 5 and 5 has a well-known needle bar driving mechanism (both not shown) interlocked with the rotation of an upper shaft rotatably driven by a sewing machine motor (not shown) rotatably disposed inside the sewing machine arm 4. ) Is attached to a known needle bar 28 (FIG. 13) which can be reciprocated with a predetermined stroke in the vertical direction. At a desired position of the sewing machine arm 4, there are provided two cloth pressers 7, 7 which can be moved in the vertical direction to press the sewing material S on the upper surface of the needle plate 6 on the upper surface of the sewing machine bed 3 during the sewing operation. A known cloth presser (not shown) is provided.

[0005] The belt loop supply device 1 has a tape material feeding means 8, a tape material holding means 9, a tape material cutting means 10, and a loop supply means 11.

The tape material feeding means 8 is for feeding a long tape material 12 for forming a belt loop to a belt loop forming position provided near a sewing position of the sewing machine main body 2A. As shown in FIG. 12, on the right side of the sewing machine main body 2A, there is provided a tape material delivery table 13 which is disposed substantially parallel to the sewing machine bed 3 and on which the tape material 12 is placed. A feed roller 14 for feeding the tape material 12 by a predetermined amount toward the belt loop forming position is provided above the tape material delivery table 13.
2 is provided so as to be able to contact the upper surface. The feed roller 14 is rotatable by a tape feed motor (not shown).

[0007] The tape material shifting and holding means 9 is a right end in FIGS. 12 and 13 which is one side end of a width direction perpendicular to the longitudinal direction of the tape material 12 fed to the belt loop forming position. The tape material 12 fed onto the fixedly disposed receiving plates 15, 15 is brought into contact with the piece 16,
Guide rods 17 and 17 and a contact piece 1
Compression coil springs 18 are provided for holding the tape material 12 brought to the positions 6 and 16 on the receiving plates 15 and 15, respectively. Then, the guide rods 17, 17 and the compression coil spring 1
The units 8 and 18 can be moved in the vertical direction by means of a tape material holding / driving unit 19 comprising an air cylinder.

The tape material cutting means 10 cuts the tape material 12 held on the receiving plates 15, 15 by the tape material shifting and holding means 9, 9 at the base end side, and forms a belt loop of a predetermined length. The movable blade 21 is provided above the front end of the tape material delivery table 13. The movable blade 21 can be vertically reciprocated by a cutting driving means including an air cylinder (not shown), and cooperates with a fixed blade 29 (FIGS. 14 and 15) disposed below the movable blade 21. The tape 12 is cut by the action.

The loop supply means 11 bends the both ends of the front end and the base end of the belt loop 20 cut to the predetermined length to the center in the longitudinal direction thereof to form the sewing machine main body 2.
A fork is supplied to a sewing position located below the needle of A. By arranging two pins 22a (FIG. 14) in parallel at an interval, the tip called a fork has a forked shape. And a pair of bent shafts 22, 22. As shown in FIG. 13, the base ends of the bent shafts 22 and 22 are connected to rotary cylinders provided independently at the lower ends of a seesaw guide lever 25 rotatably supported by a moving bracket 24. Connected to the folding driving means 23, 23 (FIG. 13). The moving bracket 24 is connected to a bent shaft moving driving means 26 comprising a three-stage air cylinder or the like disposed substantially horizontally above the moving bracket 24.
Is driven to move forward and backward toward the sewing position. That is, each bending shaft 22, 22
Is formed so as to be able to advance and retreat between a retracted position and a sewing position separated from the sewing machine main body 2A, and is formed so as to bend both ends of the belt loop 20 toward the center between the retracted position and the sewing position. ing.

According to the conventional belt loop feeder 1 having such a configuration, first, the tape material 12 is fed from the tape feeder 13 to the belt loop forming position by the rotation of the feed roller 14, and the respective receiving plates 15 , 15 from below. When the tape material 12 is fed onto each of the receiving plates 15, 15, the tape material shift holding driving means 19, 19 are driven to lower the guide rods 17, 17 and the compression coil springs 18, 18, and the tape After one end of the material 12 (the right end in FIG. 12) is brought into contact with the contact pieces 16, 16 by the guide rods 17, 17, the compression coil spring 1
Press and hold at 8,18. Thereby, the tape material 1
2 is positioned at a predetermined position. Next, as shown in FIG. 14, the bending shaft movement driving means 26 is driven to move the bending shafts 22 and 22 together with the movement bracket 24 toward the tape material 12 located at the belt loop forming position and to move the respective receiving plates 15. , 15 are inserted in the vicinity of both ends of the tape member 12 into the vicinity of both ends of the bent shafts 22, 22, which are referred to as bifurcated forks. That is, the bent shaft 22
The tape material 12 is located between the two pins 22a, 22a.

Next, as shown in FIG. 15, the cutting drive means (not shown) is driven to move the movable blade 21 down and cooperate with the fixed blade 29 to cut the base end side of the tape material 12. When a belt loop 20 having a predetermined length is formed, the bending driving means 23, 23 are driven, and the respective bending shafts 22, 22 are moved as shown in FIG.
5, the belt loop 20 is rotated approximately 270 degrees outwardly as shown by an arrow A, and is bent substantially 180 degrees so that both ends of the belt loop 20 are folded downward toward the center in the longitudinal direction.

Next, the tape material shift holding driving means 19,
19 is driven, and as shown in FIG.
7 and the compression coil springs 18, 18 are raised to release the holding state of the belt loop 20, which is held between the receiving plates 15, 15 and the compression coil springs 18, and held.

Next, as shown in FIG. 13, the bending shaft moving drive means 26 is driven to move the bending shafts 22 and 22 together with the moving bracket 24 before the sewing position, more specifically, the needle of the belt loop sewing machine 2. The belt loop 20, which is advanced toward the upper side of the side edge of the plate 6 and the like and is bent at both ends, stands by just before the sewing position.

Then, when the operator operates the loop supply switch 27 (FIG. 13) after positioning the sewing product S at a predetermined position on the needle plate 6, the bending shaft movement driving means 26 is driven to move the movement bracket 24. With bent shaft 2
The belt loops 20, 22 are advanced to the sewing position, and the belt loop 20 having both ends bent is fed to the sewing position, specifically, below the presser foot 7,7.

Next, when the work clamps 7, 7 are lowered to hold the both bent portions of the belt loop 20, the bending shaft moving driving means 26 is driven to move the bending shafts 22, 22 together with the moving bracket 24 backward. And belt loop 20
After the distal ends of the bifurcated bent shafts 22 and 22 are pulled out from both bent portions of the belt loop 20, the belt loop 20 is sewn with a predetermined sewing pattern, for example, by sewing both sides of the belt loop 20 in the longitudinal direction. S is sewn at a predetermined position.

When the bending shafts 22, 22 are retracted, the bending driving means 23, 23 are driven to rotate the bending shafts 22, 22 in the reverse direction.
Is returned to the initial state, and thereafter, the same operation as described above is performed to form a belt loop 20 used for the next sewing, and to stand by just before the sewing position.

As the tape feeding means 8, there has been proposed a tape feeding means (not shown) provided with a tape material pulling-out means for nipping and pulling the leading end of the tape material 12 in place of the feeding roller 14. .

[0018]

However, at present,
There is a need for high quality sewing products with excellent sewing product quality.
In order to improve the quality of the sewn product of the belt loop 20 sewn to the waist of the sewn product S by the belt loop sewing machine, and to improve the appearance quality of the sewn product and the belt insertability, the belt on the receiving plates 15 and 15 is used. A belt loop supply having a fullness forming means capable of sewing a belt loop 20 to a sewn product S while lifting the central portion of the loop 20 into a substantially mountain shape to form a fullness in which the central portion is slackened and maintaining this shape. A device is needed.

In the belt loop supply device having such a fullness forming means, the belt loop 20
When fullness is formed, it is easily conceivable that the amount by which the fullness receiving plate rises in accordance with a change in the fullness amount needs to be adjusted with labor and time.

The present invention has been made in view of these points, and has as its object to provide a belt loop supply device capable of easily forming fullness.

[0021]

According to a first aspect of the present invention, there is provided a belt loop supply apparatus comprising: A tape feeding unit in which a feeding roller is rotatably driven to feed a long tape material toward a belt loop forming position provided near the sewing position, and the tape material is drawn toward the belt loop forming position. A full-length forming means for supporting a central portion in the longitudinal direction of the belt loop from below; and Full that can move the receiving plate up and down and move up with a smaller force than the force of gripping the tape material by the tape material feeding means and the tape material drawing means. In that it has a scan for forming the drive means.

By adopting such a configuration, when forming the fullness in the belt loop, the tape material feeding means and the tape material drawing means of the tape material feeding means feed the belt material to the belt loop forming position. The both ends of the tape material that becomes the belt loop can be fixed, and in this state, the central portion in the longitudinal direction of the tape material that becomes the belt loop is
When lifted by a fullness receiving plate driven by a fullness forming driving means capable of ascending and moving with a force smaller than the force of gripping the tape material of the tape material feeding means and the tape material drawing means, the fullness is changed according to the change in the fullness amount. By controlling the amount of tape material fed by the tape material feeding means without adjusting the amount of rise of the receiving plate, the center of the tape material that becomes the belt loop fed to the belt loop forming position in the longitudinal direction of the tape material is controlled. A fullness of a predetermined fullness amount can be easily formed.

A second aspect of the present invention is a belt loop supply device according to the first aspect of the present invention, wherein the fullness forming driving means is provided with a tape material feeding means and a tape material pulling means for gripping a tape material. It is constituted by a single-acting cylinder with a built-in spring with a smaller force, and when forming fullness in the belt loop, the fullness receiving plate is driven by the biasing force of the spring of the fullness forming drive means. is there.

By adopting such a configuration, when forming the fullness in the belt loop, a force for lifting the central portion in the longitudinal direction of the tape material forming the belt loop can be easily obtained by the spring. As a result, the configuration can be simplified.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. The same or corresponding components as those of the above-described conventional device are denoted by the same reference numerals in the drawings.

FIGS. 1 to 5 show a main part of an embodiment of a belt loop supply device according to the present invention. FIG. 1 is a front view, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. FIG. 4 is an enlarged plan view showing the main part of the receiving plate of FIG. 1 as viewed from above, and FIG. 5 is a block diagram of the main part of the control means.

As shown in FIGS. 1 to 3, the belt loop supply device 31 of the present embodiment is provided with a long tape material 12 for forming a belt loop in the vicinity of a sewing position of a sewing machine body (not shown). It has a tape material feeding means 32 for feeding the belt material to the belt loop forming position. As shown in FIG. 1, the tape feeding means 32 is provided with tape feeding means 3 disposed so as to face each other at an appropriate interval.
3 and a tape material withdrawing means 34 so that the tape material 12 (FIG. 4) serving as the belt loop 20 can be withdrawn while being withdrawn.

The tape material feeding means 34 moves the tape material 12 from the right to the left in FIG. 1 so as to extend along the longitudinal direction of the sewing machine body on the right side of the sewing machine body (not shown). It is provided on the base end side BS on the right side in FIG. 1 located on the upstream side in the sending direction of the tape material 12. The tape feeding means 33 has a feeding roller 14 driven to rotate by a tape feeding motor 64 (FIG. 5) such as a stepping motor.
Is a tape material 1 placed on the upper surface of the tape material delivery table 13.
2 is provided so as to be able to contact the upper surface. The tape feeding motor 64 is electrically connected to a control means 68 (FIG. 5) described later, and is driven at a predetermined timing based on a control command sent from the control means 68. I have.

In the vicinity of the leading end of the feeding roller 14 located downstream of the feeding direction of the tape material 12, after the tape material 12 is fed toward the belt loop forming position,
Base end side B located on the upstream side in the feeding direction of tape material 12
Tape material cutting means 39 for cutting S at a predetermined position near the tip of the tape material delivery table 13 to form a belt loop 20 of a predetermined length is provided. This tape material cutting means 39 is always located above the traveling path of the tape material 12 and is movable in the vertical direction by a cutting drive means 35 such as a reciprocating air cylinder.
1 and a fixed blade 29 disposed substantially below the traveling path of the tape material 12 so as to face the traveling path of the tape material 12 so as to be substantially opposed to the movable blade 21. The cutting driving unit 35 is connected to a control unit 68 described later.
(FIG. 5) can be driven by a cutting drive means operating solenoid valve 65 connected to the cutting drive means operating solenoid valve 65. It is driven at the timing.

The tape material withdrawing means 34 is for withdrawing the tape material 12 from the right side to the left side in FIG. 1 is located on the leftmost tip side FS in FIG. The tape pulling-out means 34 has a pair of gripping arms 36 for holding the leading end of the tape 12, and one of the gripping arms 36 shown in the lower part of FIG. 1 is a fixed arm 36 a, The other shown in the upper part of FIG. 1 is a movable arm 36b called a beak or the like. The fixed arm 36a and the movable arm 36b are driven by opening and closing drive means 37 including a reciprocating air cylinder so that the distal end of the movable arm 36b comes into contact with and separates from the distal end of the fixed arm 36a. The movable arm 3
By contacting the tip of the fixed arm 36a with the tip of the fixed arm 36a via the tape 12, the tape 12 can be sandwiched from both sides in the thickness direction. The gripping arm 36 is attached to the distal end of a drive rod 38 (only part of which is shown in FIG. 1) for moving the gripping arm 36 substantially horizontally toward and from the distal end of the tape material 12. The drive rod 38 reciprocates by driving a tape material pulling motor 66 (FIG. 5), so that the pair of gripping arms 36 advance and retreat toward the leading edge of the tape material 12. . The tape pulling motor 66 is electrically connected to a control means 68 (FIG. 5) described later, and is driven at a predetermined timing based on a control command sent from the control means 68. I have.

The opening / closing drive means 37 can be driven by an opening / closing drive means operating solenoid valve 67 connected to a control means 68 (FIG. 5) which will be described later. It is driven at a predetermined timing based on the control command sent from the control means 68.

As shown in FIGS. 1 to 3, the belt loop supply device 31 of the present embodiment comprises a belt loop forming long tape material 12 fed to a belt loop forming position.
A tape material that supports the belt member 20 from below and supports the vicinity of both ends in the longitudinal direction of the belt loop 20 formed to have a predetermined length by cutting the tape material 12 at the base end side shown in FIG. A pair of receiving plates 42 as supporting means
have. One of these receiving plates 42 located on the base end side BS shown on the right side of FIG. 1 is a front receiving plate 42F that supports the vicinity of the base end of the belt loop 20 from below,
1 is a rear receiving plate 4 that supports the vicinity of the front end of the belt loop 20 from below.
2B.

The front receiving plate 42F is formed in a substantially inverted U-shape (FIG. 3), and the upper surface of the lower horizontal portion 43F shown below supports the vicinity of the base end of the belt loop 20 from below. The receiving surface 44F is formed to be substantially flat. Above this receiving surface 44F, a lower end of a compression coil spring 45F for holding the vicinity of the base end portion of the belt loop 20 on the receiving surface 44F with a predetermined contact force is disposed so as to face each other. The upper end of the compression coil spring 45F is attached to the lower end surface of a mounting member 46F formed in a substantially rectangular shape. An output shaft 47Fa of a reciprocating cylinder 47F that moves the lower end of the compression coil spring 45F toward and away from the receiving surface 44F is provided on the upper end surface of the mounting member 46F.
Of the reciprocating cylinder 47F
Is attached to an upper horizontal portion 48F located above the front receiving plate 42F. The upper horizontal portion 48F is attached to the mounting portion 50F.
And is connected to the lower horizontal portion 43F via the.

The belt loop 2 is attached to the mounting member 46F.
When bending both end portions of the loop feeder 0 toward the center in the longitudinal direction, a pin 22 forming a forked tip called a fork of the bent shaft 22 of the loop supply means 11 (FIG. 1).
a and 22a of the loop supply means 11 of the bending guide 49 for regulating the movement position of both ends of the belt loop 20 so that both ends of the belt loop 20 are folded toward the center in the longitudinal direction of the belt loop 20. Figure 1 out
A front bending guide 49F that regulates the movement position of the end of the base end side BS of the belt loop 20 that is bent by the pins 22a at the tip end of the bent shaft 22 located on the base end side BS shown on the right side. Has been attached.

Front bending guide 49F in the present embodiment
Is a pair of guide pins 5 whose tips extend downward.
1 and 52, and the base end of one guide pin 51 shown on the left side of FIG.
A belt loop 20 is provided on the front side surface shown on the left (lower in FIG. 4).
Are mounted such that their positions can be adjusted in a width direction substantially orthogonal to the longitudinal direction of the horn. The base end of the other guide pin 52 shown on the right side in FIG. 3 (upper side in FIG. 4) is attached to the mounting member 46F.
4 is attached to the right side surface of the recess formed in the upper right corner of FIG. Further, both guide pins 51 and 52 are attached to the front receiving plate 4.
It has main body parts 51a and 52a (FIG. 3) that pass from the upper right to the lower right side of the lower horizontal portion 43F almost in the thickness direction of the lower horizontal portion 43F.
The main body 51a of one guide pin 51 and the main body 52a of the other guide pin 52 have a size in the width direction orthogonal to the longitudinal direction of the tape material 12 or the belt loop 20 fed to the belt loop forming position. More specifically, the width dimension WB of the tape material 12 or the belt loop 20 (FIG. 4)
Are arranged so as to extend substantially in parallel with each other at an interval WG (FIG. 3) according to the magnitude of.

That is, the interval WG between the main body portions 51a and 52a of the front bending guide 49F in the present embodiment is formed substantially the same as the width dimension WB of the belt loop 20.
The position of both ends in the width direction of the base end side BS of the belt loop 20 can be regulated.

As shown in FIG. 3, the interval between the front end portions of the front bent guide 49F below the guide pins 51 and 52 is different from the main body portions 51a and 52 of the guide pins 51 and 52, respectively.
The main body portions 51a and 52a are formed to be larger than the distance WG between the main portions 51a and 52a so that the belt loop 20 can be easily guided between the main portions 51a and 52a. In other words, the distal ends shown below the guide pins 51 and 52 are formed larger than the width dimension WB of the belt loop 20.

Further, the main body portions 51a, 52a of the guide pins 51, 52 of the front bending guide 49F are shown on the right side in FIG. 1 of the belt loop 20, which is also the tape material 12 fed to the belt loop forming position. Positioning of both ends in the width direction of the base end side BS can be performed, and the end of the base end side BS of the belt loop 20 is bent by pins 22a, 22a at the end of the bent shaft 22 shown on the right side in FIG. When the belt loop 20 is folded, the bent shaft located at the base end side BS when the belt loop 20 is bent so that both end portions of the end portion of the base end side BS of the belt loop 20 can be positioned therebetween. The pin 22 is disposed immediately near the center of the pin 22a.

Further, the main body 51a of each of the guide pins 51, 52 of the front bending guide 49F in the present embodiment,
The reference numeral 52a allows the tape material 12 fed to the belt loop forming position to be positioned in the width direction orthogonal to the longitudinal direction of the base end side BS shown on the right side in FIG.

In the lower horizontal portion 43F of the front receiving plate 42 of this embodiment, as shown by a broken line in FIG.
9F main body portions 51a and 52a of guide pins 51 and 52
A protruding portion 43Fa protruding toward the base end portion side of the belt loop 20 is formed therebetween.

The rear receiving plate 42B, like the front receiving plate 42F, is formed in a substantially inverted U-shape (FIG. 3) on the side surface. The receiving surface 44B is formed substantially flat and supports the vicinity of the portion from below. Above the receiving surface 44B, a lower end of a compression coil spring 45B for holding the vicinity of the front end portion of the belt loop 20 on the receiving surface 44B with a predetermined contact force is disposed so as to face each other. The upper end of the compression coil spring 45B is attached to the lower end surface of a mounting member 46B formed in a substantially horizontally long rectangular shape. And
The upper end surface of the mounting member 46B is connected to the distal end of an output shaft 47Ba of a reciprocating cylinder 47B that causes the lower end of the compression coil spring 45B to move toward and away from the receiving surface 44B. It is attached to an upper horizontal portion 48B located above the receiving plate 42B. The upper horizontal portion 48B is connected to the lower horizontal portion 43B via the mounting portion 50B. Further, when the both ends of the belt loop 20 are bent toward the center in the longitudinal direction, the mounting member 46B has a bifurcated tip called a fork of the bent shaft 22 of the loop supply means 11 (FIG. 1). Of the bending guide 49 that regulates the movement position of both ends of the belt loop 20 such that both ends of the belt loop 20 that is bent by the pins 22 a forming the part are folded toward the longitudinal center of the belt loop 20. The bent shaft 22 of the loop supply means 11 which is located on the tip side shown on the left side of FIG.
A rear folding guide 49B for restricting the movement position of the end of the belt loop 20 on the tip end side, which is bent by the pins 22a at the tip end of the belt loop 20, is attached.

Rear folding guide 49B in this embodiment
Is formed symmetrically with the front bending guide 49F, and the base end of the guide pin 51 is formed on the front side surface of the mounting member 46B shown in the lower part of FIG. It is attached so that the position can be adjusted in the direction. The base end of the other guide pin 52 is attached to the left side surface of a recess formed at the upper left corner of FIG. 4 of the mounting member 46B. Further, the two guide pins 51, 52 are arranged so that the main body portions 51a, 52a pass almost in the thickness direction of the lower horizontal portion 43B from the upper side to the lower side of the lower horizontal portion 43B of the rear receiving plate 42B. The main body 51a of one of the guide pins 51 and the main body 52a of the other guide pin 52 are positioned with respect to the longitudinal direction of the tape material 12 or the belt loop 20 fed to the belt loop forming position. They are arranged so as to extend substantially in parallel with each other at intervals WG according to the size in the width direction orthogonal to each other, specifically, the width dimension WB of the tape material 12 or the belt loop 20.

That is, the distance WG between the main body portions 51a and 52a of the rear bending guide 49B in this embodiment is substantially the same as or slightly larger than the width dimension WB of the belt loop 20, similarly to the front bending guide 49F. Thus, the position of both side ends, which are both end portions in the width direction on the tip end side of the belt loop 20, can be regulated.

The distal end of each of the rear bending guides 49B, which is located below each of the guide pins 51 and 52, is a front bending guide 49F.
In the same manner as described above, the main body portions 51a, 5
The main body portions 51a and 52a are formed to be larger than the distance WG between the main portions 51a and 52a so that the belt loop 20 is easily guided between the main portions 2a. In other words, the distal ends shown below the guide pins 51 and 52 are formed larger than the width dimension WB of the belt loop 20.

Further, the main body portions 51a and 52a of the guide pins 51 and 52 of the rear bending guide 49B are provided at the left end of the belt loop 20, which is also the tape material 12 fed to the belt loop forming position, as shown in FIG. When the both ends in the width direction on the side of the belt loop can be positioned, and the end on the front end side of the belt loop 20 is bent by the pins 22a and 22a at the front end of the bent shaft 22 shown in FIG. The center of the pin 22a at the distal end of the bent shaft 22 located on the distal end side when the belt loop 20 is bent so that both end portions of the end portion on the distal end side of the belt loop 20 can be positioned therebetween. It is arranged immediately near the department side.

Further, the main body 51a of each of the guide pins 51 and 52 of the rear bending guide 49B in the present embodiment,
Reference numeral 52a allows the tape material 12 fed to the belt loop forming position to be positioned in the width direction orthogonal to the longitudinal direction on the front end side shown on the left side in FIG.

In the lower horizontal portion 43B of the rear receiving plate 42B of the present embodiment, as shown by a broken line in FIG.
A projecting portion 43Ba is formed between the main body portions 51a and 52a of the guide pins 51 and 52 of FIG.

The two receiving plates 42 are provided with two mounting screws which are vertically spaced from each other with the surface of the mounting portion 50F of the front receiving plate 42F superposed on the back surface of the mounting portion 50B of the rear receiving plate 42B. 55 and 55 are attached by screwing into the surface of the movable substrate 60 from the front side of the rear receiving plate 42B. Further, by loosening the two mounting screws 55, 55, the interval between the front receiving plate 42F and the rear receiving plate 42B can be adjusted according to the length of the belt loop 20. Further, the movable substrate 60 is vertically movably attached to the fixed plate 62 by the movable substrate drive cylinder 61, and by driving the movable substrate drive cylinder 61, the movable substrate 60 is moved together with the two receiving plates 42. You can move up and down. In addition,
The fixing plate 62 is fixed to a fixed frame (not shown) and is disposed at a predetermined position of the belt loop supply device 31.

The folding guides 49F, 49F,
49B is the positioning of the tape material 12 and the belt loop 20.
The position of both ends of the belt loop 20 is bent when the both ends of the belt loop 20 are bent toward the center in the longitudinal direction. Configuration that only performs positioning, for example,
In addition to the guide rods 17, the guide pins 5
A configuration in which 1, 52 are provided may be employed. In other words, each of the folding guides 49 is formed such that when the both ends of the belt loop 20 are bent toward the center in the longitudinal direction, the belt guides are folded such that both ends of the belt loop 20 to be folded are folded on the center in the longitudinal direction of the belt loop 20. Any configuration can be used as long as the movement positions of both ends of the loop 20 can be regulated.

Further, although each receiving plate 42 of the present embodiment is configured to be vertically movable, it may be configured to be fixedly arranged similarly to the conventional receiving plate 15.

The configuration of the loop supply means 11 according to the present embodiment is the same as that of the related art, and a detailed description thereof will be omitted.

A fullness forming unit 90 as fullness forming means is attached to the back surface of the moving substrate 60 of the present embodiment. The fullness forming unit 90 is for raising a substantially central portion in the longitudinal direction of the belt loop 20 into a substantially mountain shape to form a shape in which the central portion is slackened, and has a fullness receiving plate 91. The fullness receiving plate 91 is disposed between the receiving surfaces 44F and 44B of both receiving plates 42F and 42B as tape material supporting means for supporting the vicinity of both ends in the longitudinal direction of the belt loop 20 from below. In addition, the tape material 12 or the belt loop 20 is supported from below at the belt loop forming position. The receiving plate 91 for fullness is shown in FIG.
As shown in FIG. 3 and FIG. 3, a base 92 having a vertically long flat plate shape is provided. The lower end edge of the base 92 extends in the thickness direction of the base 92 toward the left side of FIG. A bent horizontal plate portion 93 is formed. And
The upper surface of the horizontal plate portion 93 is a substantially flat fullness receiving surface 94 that supports a substantially central portion of the tape material 12 that becomes the belt loop 20 fed to the belt loop forming position from below. Note that the shape of the fullness receiving surface 94 may be a semicircular shape that is convex upward when viewed from the front in FIG.

As shown in FIG. 2, a vertically long guide groove 95 is formed in the base 92 of the fullness receiving plate 91 so as to penetrate in the plate thickness direction. Mounting screws 96, 96 to the mounting bracket 9
7, the mounting bracket 97 is attached to the mounting bracket 97 so as to be vertically movable.

The mounting bracket 97 is attached to the movable board 6.
0, two bracket mounting screws 100, 100
Is screwed into the mounting bracket 97 from the surface side of the moving board 60 through long holes 60a provided in the moving board 60. That is, the mounting bracket 9
7 and the moving board 60 are connected to two bracket mounting screws 10.
Loosen the bracket mounting screws 100, 100
Is moved along the elongated holes 60a, 60a provided in the movable substrate 60, and the bracket mounting screws 100, 100 are tightened again, so that the belt loops 20 of the fullness receiving plate 91 correspond to the length of the belt loops 20. The longitudinal position is adjustable.

The upper part of the mounting bracket 97 is shown in FIG.
As shown in detail, a single-acting cylinder 9 having a built-in spring 99 having a desired elastic force as a driving means for fullness formation capable of independently moving the fullness receiving plate 91 up and down.
8. More specifically, a retractable single-acting cylinder 98 having a spring 99 therein is mounted with its output shaft 98a facing downward, and the output shaft 98a of the single-acting cylinder 98 is mounted.
Is connected to the upper back surface of the fullness receiving plate 91. The elastic force of the spring 99 is smaller than the holding force of the tape material 12 by the gripping arm 36 and the holding force of the tape material 12 by the feeding roller 14 and the tape material delivery table 13. That is, the urging force of the spring 99 is smaller than the force of the tape material feeding means 33 and the tape material drawing means 34 for gripping the tape material 12. The single-acting cylinder 98 can be driven by a single-acting cylinder actuating solenoid valve 110 connected to a control means 68 (FIG. 5) described later. 68
It is driven at a predetermined timing based on a control command from the controller.

The fullness forming unit 90 may be independently fixed to a fixed frame (not shown).

As shown in FIG. 5, the control means 68 of this embodiment comprises at least a CPU 69 and an RO of an appropriate capacity.
M, a memory 70 formed of a RAM or the like. The control means 68 includes a moving substrate driving cylinder 6
, A movable board driving cylinder operating solenoid valve 63 for driving the motor 1, a tape material feeding motor 64, a cutting driving means operating solenoid valve 6
5. The tape material withdrawing motor 66, the opening / closing drive means operating solenoid valve 67, the single-acting cylinder operating solenoid valve 110, and the gripping arm 36 advanced and retracted by the tape material withdrawing motor 66 are provided at the tip of the tape material 12 in order to pull out the tape material 12. Forward position sensor 11 for detecting the forward position of the vehicle moving forward
9. Various illustrations such as a bending driving means (not shown) for driving the bending shaft 22 of the loop supply means 11 to rotate, and a bending shaft moving driving means (not shown) for moving and driving the bending shaft 22 No driving means or operation panel 120
Also, various sensors (not shown) such as a thickness sensor, a position detection sensor, and a tape material detection sensor, and various switches (not shown) operated by an operator are connected. The operation panel 120 includes a belt loop 2.
An input unit (not shown) such as a touch key for inputting various setting values such as a length of 0 and a fullness amount, a setting switch (not shown) for performing various settings such as presence / absence of fullness,
A variety of things are provided, such as a power switch (not shown), a start switch (not shown), a display unit (not shown) capable of displaying an error display and an operation state.

The memory 70 stores various programs such as a program for controlling the operation and operation sequence of each unit, a program for performing an initialization operation at the time of turning on the power, various data such as sewing data, and the like. .

The memory 70 of this embodiment stores at least the rotation amount of the feed roller 14 for obtaining the feed amount of the tape material 12 according to the fullness amount when forming the fullness input from the operation panel 120. And grab arm 3
6, the opening / closing timing of the gripping arm 36, the driving timing of the single-acting cylinder 98, the tape material cutting means 39
A fullness control unit 71 in which a program for controlling the operation and the operation order of each unit when forming the fullness in the belt loop 20 such as the cutting timing of the tape material 12 according to the above is stored.

Next, the operation of the present embodiment having the above-described configuration will be described.

The supply operation of the belt loop 20 by the belt loop supply device 31 of this embodiment is performed by the operation panel 120.
Turn on the power switch (both not shown) provided in such as
Start by doing When the power is turned on to the belt loop supply device 31, the memory 7 of the control means 68 is turned on.
An initialization operation called idle operation or the like is performed based on a predetermined program stored in “0”.

When the initialization operation of the belt loop supply device 31 is completed, the tape material withdrawing means 36
Opening / closing drive means 3 for opening / closing the pair of gripping arms 36
7 holds the output shaft at the retracted end, and the movable arm 36b
In an open state separated from the fixed arm 36a. The cutting driving means 35 of the tape material cutting means 39
Holds the movable blade 21 upward. Further, as shown in FIGS. 1 to 3, the output shafts 47Fa and 47Ba of the reciprocating cylinders 47F and 47B are located at the retracted ends, and the bending guides 49F and 49B and the compression coil springs 45 are provided.
F and 45B are located above each receiving plate 42F and 42B. The single-acting cylinder 98 of the fullness forming unit 90 has an output shaft 98a against the urging force of the spring 99.
Are located at the forward end, and the fullness receiving surface 94 of the fullness receiving plate 91 is, as shown in FIG.
F, 42B hold the same or slightly lower height position as the receiving surfaces 44F, 44B. Further, the output shaft of the movable substrate drive cylinder 61 is located at the forward end and descends the movable substrate 60, and the receiving plates 42F, 42B and the fullness receiving plate 9 move with respect to the moving path of the gripping arm 36.
1 holds a position where no interference occurs.

Next, the operator sets and inputs the length of the belt loop 20, the presence / absence of fullness, the amount of fullness, and the like from the operation panel 120. Then, the length of the belt loop 20, the length of the belt loop 20, the presence / absence of fullness, the fullness amount, and the like are stored in the memory 70 of the control means 68,
The amount of rotation of the feed roller 14 and the amount of movement of the gripping arm 36 for obtaining the feed amount of the tape material 12 according to the length of the belt loop 20 are calculated based on a predetermined program and stored in the memory 70. The amount of rotation of the feed roller 14 and the amount of movement of the gripping arm 36 for obtaining the feed amount of the tape material 12 according to the fullness amount when forming the fullness are stored in the fullness control unit 71 of the memory 70 in a program. Is calculated based on and stored.

Next, a start switch (not shown) provided on the operation panel 120 or the like is turned on to start the supply operation of the belt loop 20.

Here, the supply operation of the belt loop 20 will be described depending on the presence or absence of fullness.

First, the supply operation of the belt loop 20 when fullness is not formed in the belt loop 20 is shown in FIG.
This will be described with reference to the flowchart shown in FIG.

As shown in FIG. 6, the supply operation when the belt loop supply device 31 of this embodiment does not form fullness in the belt loop 20 is as follows. Is advanced toward the leading edge of the tape material 12. Then, in the next step ST02, it is determined whether or not the forward position sensor 119 has detected the gripping arm 36 (whether or not the gripping arm 36 has reached the forward position where the leading end of the tape material 12 can be clamped). NO
In the case where the advance position sensor 119 does not detect the grip arm 36, the advance of the grip arm 36 is continued until the determination in step ST02 becomes YES.

If the determination in step ST02 is YES (the forward position sensor 119 detects the gripping arm 36 and the gripping arm 36 reaches the forward position where the leading end of the tape 12 can be clamped), the next step ST03 is executed. Then, the drive of the tape material withdrawing motor 66 is stopped to stop the forward movement of the gripping arm 36, and then the opening / closing drive means operating solenoid valve 67 is operated to operate the tape material withdrawing means 36.
Opening / closing drive means 3 for opening / closing the pair of gripping arms 36
7, the tip of the movable arm 36b is fixed to the fixed arm 3.
6a, the leading end of the tape material 12 is gripped by the grip arm 36 in the closed state, and the next step ST
Proceed to 04.

Next, in step ST04, based on the amount of rotation of the feed roller 14 and the amount of movement of the gripping arm 36 for obtaining the amount of feeding of the tape material 12 according to the length of the belt loop 20 stored in the memory 70. By driving the tape material feeding motor 64 and the tape material drawing motor 66, the feeding roller 14 according to the length of the belt loop 20 is driven.
The tape material 12 is fed to the belt loop forming position by rotating the gripping arm 36 and moving the gripping arm 36 (moving backward), and pulling out the tape material 12 by the gripping arm 36 and feeding out the tape material 12 by the feeding roller 14. I do. When the feeding of the tape material 12 to the belt loop forming position is completed, the process proceeds to the next step ST05.

Next, in step ST05, the movable substrate driving cylinder operating solenoid valve 63 is operated to move the movable substrate 60.
The original position of each of the receiving plates 42F and 42B as the tape supporting means and the receiving plate 91 for fullness, which have been retracted below the moving path of the gripping arm 36, is driven by moving the moving substrate driving cylinder 61 which moves up and down. When the tape material 12 fed to the belt loop forming position is supported from below, the process proceeds to the next step ST06.

Next, in step ST06, the reciprocating cylinders 47F and 47B are driven to move forward (down) the output shafts 47Fa and 47Ba so that the mounting members 46
F, descend 46B. These mounting members 46F, 46B
Of the guide pin bending guides 49F, 49
B and the respective compression coil springs 45F, 45B are lowered, and the tape material 12 is moved to the respective guide pins 51, 5 of the respective bending guides 49.
After positioning the tape member 12 at a predetermined position by moving the tape member 12 between the two main body parts 51a and 52a (FIG. 3), the vicinity of both ends of the tape member 12 is pressed by the compression coil springs 45F and 45B, and the respective receiving surfaces 44F and 45B are pressed. Hold at a predetermined position on 44B.

Further, the tape member 12 is attached to each of the receiving plates 42F, 4F.
2B receiving surfaces 44F, 44B and each compression coil spring 45F,
45B, the loop supply means 11
, The bending shafts 22 and 22 move forward toward the tape material 12 located at the belt loop forming position and separate from the respective receiving surfaces 44F and 44B of the receiving plates 42. The two pins 22a, 22a of the bent shafts 22, 22, which are called bifurcated forks, are inserted into the vicinity of both ends of the tape material 12, respectively. That is, the two pins 22a,
The thickness direction of the tape material 12 is located between 22a. When the bending shaft 22 advances, the process proceeds to the next step ST07.

Next, in step ST07, the cutting drive means operating solenoid valve 65 is operated to operate the cutting drive means 35.
Is driven, the movable blade 21 held at a position above the tape material 12 is lowered toward the fixed blade 29, and the base end side BS of the tape material 12 is cut to form a belt loop 20 of a predetermined length. At the same time, the opening / closing drive means operating solenoid valve 67 is operated to operate the pair of gripping arms 36 of the tape material pulling means 36.
The opening / closing drive means 37 for opening / closing the movable arm 36 is driven, and the distal end of the movable arm 36 b of the gripping arm 36 is
The gripping arm 36 is opened by separating from the distal end of the tape material 12b, and the distal end of the tape material 12 is released from the gripping arm 36. Then, the leading end of the tape material 12 is grasped and the arm 3 is held.
When release from step 6, the process proceeds to the next step ST08.

Next, in step ST08, the folding driving means 23 is driven so that both end portions of each belt loop 20 are folded downward toward the center in the longitudinal direction thereof so that each bending shaft 22 of the loop supply means 11 is folded. , 22, each bent shaft 22, 22 is rotated outward approximately 270 degrees, and both ends of the belt loop 20 are bent approximately 180 degrees toward the center in the longitudinal direction. When bent, the bending operation of both ends of the belt loop 20 ends. At this time, both ends of the belt loop 20 are guided between the guide pins 51, 52 during the rotation of the bending shafts 22, 22, and then the belt loop 2 is rotated.
The guide pins 51 and 52 are bent in a state where the positions of both side ends located in the width direction of both end portions are regulated by the main body portions 51a and 52a of the guide pins 51 and 52. In other words, both ends of the belt loop 20 that is bent by the pins 22a, 22a at the distal ends of the bent shafts 22, 22 completely fold the both ends of the bent belt loop 20 toward the longitudinal center of the belt loop 20. The movement position is regulated as described above. When the bending operation of both ends of the belt loop 20 is completed, the process proceeds to the next step ST09.

Next, in step ST09, the respective reciprocating cylinders 47F, 47B are driven to retreat (rise) the respective output shafts 47Fa, 47Ba, and the respective compression coil springs 45F, 45B are raised, and the respective receiving plates 42F , 42B and the respective compression coil springs 45F, 45B
The belt loop 20 sandwiched between the front end and the end of the belt is released.

The subsequent operation is the same as in the prior art, and a detailed description thereof will be omitted.

In this embodiment, the movable substrate driving cylinder operating solenoid valve 63 is operated to move the movable substrate 60 up and down while the belt loop 20 is kept in front of the sewing position by the loop supply means 11. By driving the moving substrate drive cylinder 61, each receiving plate 4 as a tape material supporting means is driven.
2F, 42B and the fullness receiving plate 91 are lowered so as to be retracted below the movement path of the arm 36, and the tape material feeding means 32 is driven to feed the tape material 12 to the belt loop formation. Actions can be taken.

Next, the supply operation of the belt loop 20 when fullness is formed in the belt loop 20 will be described with reference to FIG.
This will be described with reference to the flowchart shown in FIG.

As shown in FIG. 7, the supply operation when the belt loop supply device 31 of the present embodiment forms fullness in the belt loop 20 is as follows:
Similarly to the step ST01, the tape material pulling motor 6
The operation is started by driving the gripping arm 36 to advance the gripping arm 36 toward the leading edge of the tape material 12. Then, in the next step ST11, similarly to the step ST02, whether or not the advance position sensor 119 has detected the grip arm 36 (whether or not the grip arm 36 has reached the advance position at which the tip end of the tape material 12 can be clamped) Judge) and NO
If the forward position sensor 119 does not detect the gripping arm 36, the gripping arm 36 continues to advance until the determination in step ST11 becomes YES.

If the determination in step ST11 is YES (the forward position sensor 119 detects the gripping arm 36 and the gripping arm 36 reaches the forward position where the leading end of the tape material 12 can be clamped), the next step ST12 is performed. Then, similarly to step ST03, the drive of the tape material withdrawing motor 66 is stopped to stop the forward movement of the gripping arm 36. Thereafter, the opening and closing drive means operating solenoid valve 67 is operated to operate the tape material withdrawing means 36. The open / close drive means 37 for opening and closing the pair of grip arms 36 is driven to move the movable arm 3
In a closed state in which the distal end of the tape material 6b abuts against the fixed arm 36a, the distal end of the tape material 12 is gripped by the grip arm 36, and the process proceeds to the next step ST13.

Next, in step ST13, the amount of rotation of the feed roller 14 and the amount of movement of the gripping arm 36 for obtaining the amount of feeding of the tape material 12 according to the length of the belt loop 20 stored in the memory 70, and The amount of rotation of the feed roller 14 and the gripping arm 36 for obtaining the feed amount of the tape material 12 according to the fullness amount when forming the fullness
The tape feed motor 64 and the tape feed motor 66 are driven based on the amount of movement of the feed roller 14 and the rotation of the feed roller 14 and the movement of the grip arm 36 according to the length of the belt loop 20 when fullness is formed. Retreat)
Is carried out, the tape material 12 is pulled out by the gripping arm 36 of the length of the tape material 12 added to the length necessary for forming the fullness to the length of the belt loop 20, and the tape material 12 is fed out by the feeding roller 14. Thus, the tape material 12 is fed to the belt loop forming position. When the feeding of the tape material 12 to the belt loop forming position is completed, the process proceeds to the next step ST14.

Next, in step ST14, the movable substrate driving cylinder operating solenoid valve 63 is operated to move the movable substrate 60.
FIG. 8 shows the receiving plates 42F, 42B and the fullness receiving plate 91 as the tape material supporting means, which have driven the moving substrate drive cylinder 61 which moves up and down, and have retreated below the moving path of the gripping arm 36. As described above, it rises so as to return to the original initial position, and proceeds to the next step ST15.

Next, in step ST15, the single-acting cylinder operating solenoid valve 110 is operated to drive the single-acting cylinder 98, more specifically, the supply of air pressure is stopped. Then, the output shaft 98a is retracted by the urging force of the spring 99, and the fullness receiving plate 91 is raised. As shown in FIG. 9, the central portion in the longitudinal direction of the tape material 12 fed to the belt loop forming position. Is lifted by the fullness receiving surface 94.

At this time, the force of lifting the tape 12 by the spring 99 of the single-acting cylinder is smaller than the force of gripping the tape 12 by the tape feeding means 33 and the tape pulling means 34. Loop 2
The both ends of the tape material 12 which becomes 0 are tape material feeding means 33.
The central portion of the tape material 12 that becomes the belt loop 20 can be lifted upward in a state where the tape material 12 is fixed by the tape material withdrawing means 34, and the tension of the tape material 12 that becomes the belt loop 20 by the urging force of the spring 99 Since the tape material 12 is provided, the bending of the tape material 12 serving as the belt loop 20 can be easily corrected (corrected). That is, the side end perpendicular to the longitudinal direction of the tape material 12 that becomes the belt tape 20 fed to the belt loop forming position can be reliably positioned on a straight line.

When the fullness receiving plate 91 is lifted and the central portion in the longitudinal direction of the tape material 12 fed to the belt loop forming position is lifted by the fullness receiving surface 94, the process proceeds to the next step ST16.

Next, in step ST16, the reciprocating cylinders 47F and 47B are driven to advance (down) the output shafts 47Fa and 47Ba, and the mounting members 46
F, descend 46B. These mounting members 46F, 46B
Of the guide pin bending guides 49F, 49
B and the compression coil springs 45F and 45B descend, and as shown in FIG. 10, the tape material 12 is moved between the main body portions 51a and 52a (FIG. 3) of the guide pins 51 and 52 of the bending guide 49. After positioning the tape material 12 at a predetermined position, the vicinity of both ends of the tape material 12 is
5F and 45B hold it at a predetermined position on each receiving surface 44F and 44B.

At this time, each bending guide 49F, 49B is
During the descent, the raised portion of the tape material 12 is sandwiched between the main body portions 51a and 52a (FIG. 3) to ensure the positioning.

Further, the vicinity of both ends of the tape member 12 is pressed by the respective compression coil springs 45F, 45B, and the respective receiving surfaces 44F, 4B are pressed.
4B, the fullness receiving surface 94 of the fullness receiving plate 91 moves to a predetermined position in accordance with the biasing force of the spring 99, and as shown in FIG. The formation of a predetermined amount of fullness in the central portion in the longitudinal direction is completed.

At this time, the amount by which the central portion in the longitudinal direction of the tape material 12 is lifted (fullness amount) can be controlled by the position of the gripping arm 36 and the amount of the tape material 12 fed out, so that the fullness forming unit 90 according to the fullness amount is controlled. Since there is no need to make adjustments, operability can be easily improved.

That is, a stopper is provided for controlling the stroke of the air cylinder when the fullness receiving plate 91 is moved up and down by an air cylinder (same reciprocating cylinder) as fullness forming drive means in accordance with the fullness amount. Since there is no need to adjust the position of the stopper,
The configuration can be simplified, and the operability can be easily improved.

Further, the tape member 12 is connected to each of the receiving plates 42F, 4F.
2B receiving surfaces 44F, 44B and each compression coil spring 45F,
45B, the loop supply means 11
, The bending shafts 22 and 22 move forward toward the tape material 12 located at the belt loop forming position and separate from the respective receiving surfaces 44F and 44B of the receiving plates 42. The two pins 22a, 22a of the bent shafts 22, 22, which are called bifurcated forks, are inserted into the vicinity of both ends of the tape material 12, respectively. That is, the two pins 22a,
The thickness direction of the tape material 12 is located between 22a. Then, when the bending shaft 22 advances, the process proceeds to the next step ST17.

Next, in step ST17, as in step ST07, the cutting driving means operating solenoid valve 65 is operated to drive the cutting driving means 35, and the movable blade 21 held at a position above the tape material 12 is moved. Is lowered toward the fixed blade 29, the base end side BS of the tape material 12 is cut to form a belt loop 20 of a predetermined length, and the opening / closing drive means operating solenoid valve 67 is operated to draw out the tape material withdrawal means. 3
6 drives the opening / closing drive means 37 for opening and closing the pair of gripping arms 36, and moves the movable arm 36 of the gripping arm 36.
The distal end of the tape material 12 is released from the gripping arm 36 with the distal end of the tape material 12 separated from the distal end of the fixed arm 36b to open the gripping arm 36. And tape material 1
When the tip of No. 2 is released from the grip arm 36, the process proceeds to the next step ST18.

Next, in step ST18, similarly to step ST08, the folding driving means 23 is driven so that both ends of each belt loop 20 are folded downward toward the center in the longitudinal direction. By rotating each of the bent shafts 22, 22, each of the bent shafts 22, 22 rotates outwardly by approximately 270 degrees, and both ends of the belt loop 20 are folded downward toward the center in the longitudinal direction. When the bending is performed by approximately 180 degrees in this manner, the bending operation of both ends of the belt loop 20 ends as shown in FIG.

At this time, both ends of the belt loop 20 are guided between the guide pins 51, 52 during the rotation of the bending shafts 22, 22, and then the width direction of the both ends of the belt loop 20 is changed. The position of both ends located at
The first and second main bodies 51a and 52a are bent while being regulated. That is, each bent shaft 22,
The movement position of the both ends of the belt loop 20 that is bent by the pins 22a, 22a at the distal end of the belt loop 20 is regulated such that the both ends of the bent belt loop 20 completely fold over the center of the belt loop 20 in the longitudinal direction. .

When the bending operation of both ends of the belt loop 20 is completed, the process proceeds to the next step ST19.

Next, in step ST19, the single-acting cylinder operating solenoid valve 110 is operated to drive the single-acting cylinder 98, more specifically, to supply air pressure. Then, the output shaft 98a moves forward against the urging force of the spring 99,
The fullness receiving plate 91 returns to the initial position.

When the fullness receiving plate 91 returns to the initial position, the process proceeds to the next step ST20.

Next, in step ST20, as in step ST09, each of the reciprocating cylinders 47F, 47B
, The output shafts 47Fa, 47Ba are retracted (raised) to raise the respective compression coil springs 45F, 45B, and the receiving surfaces 44F, 44B of the respective receiving plates 42F, 42B and the respective compression coil springs 45F, 45B. The belt loop 20 sandwiched between the tip and the end is released.

The subsequent operation is the same as in the conventional case, and a detailed description thereof will be omitted.

In the present embodiment, the movable substrate driving cylinder operating solenoid valve 63 is operated to move the movable substrate 60 up and down while the belt loop 20 is kept in front of the sewing position by the loop supply means 11. By driving the moving substrate drive cylinder 61, each receiving plate 4 as a tape material supporting means is driven.
2F, 42B and the fullness receiving plate 91 are lowered so as to be retracted below the movement path of the arm 36, and the tape material feeding means 32 is driven to feed the tape material 12 to the belt loop formation. Actions can be taken.

As described above, according to the belt loop supply device 31 of the present embodiment, when forming the fullness in the belt loop 20, the tape material supply means 32 controls the belt loop 20 fed to the belt tape forming position. Tape material 12
In this state, the center portion in the longitudinal direction of the tape material 12 which becomes the belt loop 20 is driven by the spring 99 of the single-acting cylinder 98 as the driving means for forming the fullness. Board 91
Thus, when the belt material 20 is lifted up in a substantially mountain shape, the bending of the tape material 12 serving as the belt loop 20 can be corrected. Therefore, when the both ends of the belt loop 20 are bent toward the center in the longitudinal direction, the belt loop 20 is bent and moved. The positions of both ends of the belt loop 20 can be folded so as to be folded toward the center of the belt loop 20 in the longitudinal direction, and as a result, the occurrence of dog ears can be reliably prevented. In addition, since the occurrence of dog ears can be more reliably prevented, it is possible to more reliably prevent the quality of sewn products from deteriorating due to the occurrence of dog ears.

Further, according to the belt loop supply device 31 of the present embodiment, the amount (fullness) by which the central portion in the longitudinal direction of the tape material 12 is lifted depends on the position of the grip arm 36 from which the tape material 12 is pulled out, Since it is possible to control the fullness forming unit 90 according to the fullness amount, the operability can be easily improved.

Further, according to the belt loop supply device 31 of this embodiment, when the fullness is formed, the tape material 12
The compression coil springs 45F and 45B are always in the shape of a tape 12
, And the fullness amount can be stabilized.

Further, according to the belt loop supply device 31 of the present embodiment, regardless of the presence / absence of fullness, the tape supply means is provided in a state where the belt loop 20 is made to stand by the loop supply means 11 before the sewing position. Since the overlap operation of feeding the tape material 12 to the belt loop formation by driving the drive roller 32 can be performed, different operations can be performed in parallel, and as a result, the supply cycle time of the belt loop 20 can be shortened. Can be.

In the present embodiment, the single-acting cylinder 98 is used as the driving means for forming the fullness. However, the force acting in the direction of lifting the tape 12 is applied to the tape material feeding means 33 and the tape material pulling means 34. If the force is smaller than the gripping force of the gripper 12, a driving means such as an air cylinder or a solenoid may be applied. However, with the single-acting cylinder 98 of the present embodiment, the force for lifting the tape member 12 can be easily obtained by the spring 99, so that the configuration can be simplified (simplified).

The present invention is not limited to the above-described embodiment, but can be variously modified as needed.

[0107]

As described above, according to the belt loop supply device of the present invention, when forming the fullness in the belt loop, the tape material feeding means and the tape material feeding means of the tape material feeding means. The pull-out means can fix both ends of the tape material serving as the belt loop fed to the belt loop forming position, and in this state, the central part in the longitudinal direction of the tape material serving as the belt loop can be fixed to the tape material feeding means and the tape material. When lifted by a fullness receiving plate driven by a fullness forming driving unit that can move upward with a force smaller than the pulling unit gripping the tape material, the amount of the fullness receiving plate rising according to the change in the fullness amount The belt loop fed to the belt loop forming position is obtained only by controlling the tape material feeding amount by the tape material feeding means without adjusting the belt loop. It exhibits the excellent effects such a longitudinal central portion of the predetermined fullness amount fullness-loop material can be easily formed.

According to the belt loop supply device of the present invention as set forth in claim 2, in addition to the effect of claim 1, when forming a fullness in the belt loop, the tape material to be the belt loop is formed. A force for lifting the central portion in the longitudinal direction can be easily obtained by the spring, and as a result, an extremely excellent effect such as simplification of the configuration can be achieved.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of an embodiment of a belt loop supply device according to the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 is an enlarged right side view of a main part of FIG. 1;

FIG. 4 is an enlarged plan view showing a main part of the receiving plate of FIG. 1 as viewed from above.

FIG. 5 is a block diagram of a main part of control means of the belt loop supply device of FIG. 1;

FIG. 6 is a flowchart illustrating a supply operation in a case where fullness is not formed in a belt loop in the belt loop supply device of FIG. 1;

FIG. 7 is a flowchart for explaining a supply operation when fullness is formed in a belt loop in the belt loop supply device of FIG. 1;

FIG. 8 is an explanatory diagram showing a state in which the feeding of the tape material when forming the fullness in the belt loop in the belt loop feeding device of FIG. 1 has been completed and the tape material supporting means has been returned to the initial state;

9 is a view similar to FIG. 8, but showing a state in which a center portion of a tape material is lifted by a fullness forming unit when fullness is formed in a belt loop in the belt loop supply device of FIG. 1;

FIG. 10 is a view similar to FIG. 8, showing a fullness formation state when fullness is formed in a belt loop in the belt loop supply device of FIG. 1;

FIG. 11 is a view similar to FIG. 8, but showing a state in which the bending operation of both ends of the belt loop is completed when fullness is formed in the belt loop in the belt loop supply device of FIG. 1;

FIG. 12 is a perspective view showing a main part of an example of a belt loop supply device used in a conventional belt loop sewing machine.

FIG. 13 is a front view of FIG.

FIG. 14 is an explanatory diagram illustrating a tape material feeding state by the belt loop supply device in FIG. 12;

15 illustrates a state in which the tape material is cut by the belt loop supply device in FIG. 12 to form a belt loop, and then both ends of the belt loop are bent toward the center side.
Figure similar to 4

FIG. 16 is a view similar to FIG. 14, showing a state in which the holding state of the belt loop by the belt loop supply device in FIG. 12 is released.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Loop supply means 12 Tape material 14 Feeding roller 20 Belt loop 22 Bending shaft 31 Belt loop supply device 32 Tape material feeding means 33 Tape material feeding means 34 Tape material pulling means 36 Grab arm 39 Tape material cutting means 42 (Tape material Receiving plate (as supporting means) 64 Tape material feeding motor 66 Tape material drawing motor 68 Control means 70 Memory 71 Fullness control unit 90 Fullness forming unit (as fullness forming means) 91 Fullness receiving plate 98 (as fullness forming driving means) ) Single-acting cylinder 99 Spring 110 Single-acting cylinder-operated solenoid valve 119 Advance position sensor 120 Operation panel S Sewing material BS Base end side FS Tip end side

Claims (2)

[Claims] 1. A tape feeding means capable of feeding an elongated tape material for forming a belt loop to a belt loop forming position provided near a sewing position, and a tape material feeding means for feeding the tape material to the belt loop forming position. Tape material supporting means for supporting the tape material from below, and a tape material capable of forming a belt loop of a predetermined length by cutting the tape material fed to the belt loop forming position at a base end side. Cutting means, fullness forming means capable of forming a fullness in which a central portion of the belt loop is lifted in a substantially mountain shape by lifting the central portion in the longitudinal direction, and bending and sewing both ends of the belt loop toward the longitudinal center thereof. A belt feeding device having a loop feeding device that feeds the belt material to a position, wherein the tape material feeding device is provided with a long tape material for forming a belt loop near a sewing position. A tape feeding unit formed so that a feeding roller can be driven to rotate toward the belt loop forming position, and a gripping arm for holding the tape material for pulling the tape toward the belt loop forming position can be driven forward and backward. The fullness forming means comprises: a fullness receiving plate for supporting a central portion of the belt loop in the longitudinal direction from below; and a fullness receiving plate capable of moving the fullness receiving plate up and down and the tape material. A belt loop supply device, comprising: a fullness forming drive unit capable of ascending and moving with a force smaller than a force of gripping the tape material of the tape material withdrawing means. 2. The belt driving apparatus according to claim 1, wherein the fullness forming driving means is a single-acting cylinder including a spring having a smaller force than a force of the tape material feeding means and the tape material drawing means for gripping the tape material. 2. The belt loop supply device according to claim 1, wherein, when fullness is formed in the loop, the fullness receiving plate is driven by a biasing force of a spring of the fullness forming drive unit.