JPH0716551B2 - Method of cutting partition tape for forming block of futon and sewing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a tape sewn in a lattice pattern to be formed on a cloth for partitioning a batting to be filled inside the cloth of a futon so as to stand up for each block. The present invention relates to a method of cutting a partition tape for forming a block of a futon, which is formed by cutting a predetermined length in a width direction, and a sewing machine suitable for carrying out the method.

[0002]

2. Description of the Related Art In recent years, duvets have become widespread as bedclothes for bedding. In this duvet, a predetermined amount of feathers is filled in a plurality of blocks formed by stitching the front and back futon fabrics in a grid pattern or the like, and the unevenness of the feathers is prevented.
In addition, a form in which a floating pattern such as a lattice pattern is formed is common.

FIG. 4 shows a cross section of a duvet in which such a block 1 is formed. In forming the block 1, the feathers (filling pad) 2 are directly sewn on the rectangular front and back cloths 3 and 3 filled between them, but in this case, the sewn portion becomes thin and heat retention is impaired. I will end up. To prevent this, as shown in FIG. 5, each block 1
A partition tape 4 made of nylon or the like is sewn on the front and back cloths 3 and 3 which are the boundaries between the cloths 3 and 3 so that the cloths 3 and 3 are separated from each other.

In order to sew the tape 4 onto the cloths 3 and 3, respectively, first, the cloth 1 is sewn in a grid pattern at the boundary of the block 1, and then the other cloth 3 is sewn into the block 1 with the feather 2 And the tape 4 is rolled up and erected and sewn to its end. The seams for the tape 4 are at both ends in the width direction so that the front and back fabrics 3, 3 are spaced apart from each other.

Now, in order to sew the tape 4 on one of the cloths 3 in a grid pattern, first, a plurality of tapes 4 are sewn in parallel to each other at equal intervals in the width direction of the cloth 3, and then in the longitudinal direction.
A plurality of tapes 4 are sewn at equal intervals in parallel with each other. That is, on the widthwise tape 4 sewn first,
The tapes 4 in the vertical direction cross each other in an overlapping state.

However, in this state, the tape 4 in the width direction is sewn to the tape 4 in the longitudinal direction,
The tape 4 in the width direction cannot be rolled up to stand up. Therefore, as shown in FIG.
In the upright side, the portion corresponding to the seam of the tape 4 in the vertical direction is cut in the width direction to form a cut 5, so that the tape 4 in the width direction can stand. Then, in order to form the cut line 5, conventionally, scissors or the like is used by a human hand.

[0007]

Thus, in the method of cutting the tape 4 by the hand of the person to form the cut line 5,
It is troublesome, the labor required for mass production increases, and the amount of production per unit time is small.

The present invention has been made in view of the above circumstances, and it is possible to form cuts on a tape without human hand, and to shorten the time required for the work to improve mass productivity. An object of the present invention is to provide a method of cutting a partition tape for forming a block of a futon and a sewing machine suitable for carrying out the method.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and as claimed in claim 1, sewn a cloth into a lattice to partition the batting filled inside the cloth of the futon into blocks. A method of cutting a partition tape for forming a block of a futon, in which a tape is cut by a predetermined length in the width direction of the tape so that it can stand up in blocks After the first tape to be sewn is sewn by the sewing machine, when the second tape is sewn to the cloth by the sewing machine while intersecting with the first tape, the first tape is sewn by the cutter means attached to the sewing machine. It is characterized in that the second tape is sewn on the cloth while the seam is cut along the width formed in the first tape while forming a cut by cutting a predetermined length in the width direction.

Further, according to a second aspect of the present invention, a tape sewn in a lattice pattern on the cloth for partitioning the batting to be filled inside the cloth of the futon into blocks can be erected for each block. A device for sewing a partition tape for forming a block of a futon, which is formed by cutting a predetermined length in a direction to form a cut, and sewing the tape to the fabric, the sewing machine head including a sewing needle and a sewing needle drive device. Cutter means for cutting the tape in the width direction for a predetermined length to form the cut is provided in front of the sewing needle in the relative sewing direction with respect to.

[0011]

According to the method of the present invention, a slit is formed in the first partition tape sewn on the cloth first by the cutter means attached to the sewing machine, while the second tape to be sewn later is formed on the cloth almost at the same time. Since it is sewn, compared to the conventional method of forming a cut with human hands,
The cuts can be formed very easily without labor, and since it is not necessary to separately set a time for forming the cuts, the production amount per unit time is significantly increased, and mass productivity is improved. Is planned.

The sewing machine of the present invention is extremely suitable for carrying out the above method.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As described above, FIG. 1 shows an overall outline of a sewing device for sewing a partition tape (hereinafter simply referred to as tape) 4 for forming a block 1 on a cloth 3 of a futon in a lattice shape from above. In this device, basically, the dough 3 is placed on the start table 11 in a rectangular frame 12
After supporting the end portion of the frame body horizontally and stretching it horizontally, the frame body 12 is transferred to the side stitching device 13, and by the side stitching device 13,
A plurality of (four in this case) tapes (first tapes) 4a are sewn on the material 3 and then transferred to the vertical stitching device 14, and a plurality of (three in this case) are fed by the vertical stitching device 14.
The tape (second tape) 4b is sewn to the cloth 3 and, at the same time, a cut 5 is formed in the laterally sewn tape 4a, and then the tape 4a is transferred to the end table 15.

The start table 11 comprises a frame (not shown) on which a substantially square table body 16 is horizontally fixed, and a rectangular shape corresponding to the size of the cloth 3 placed on the table body 16. Tape 4 on the frame 12
The ends of the cloth 3 to which (4a, 4b) are sewn are clamped by clips or the like and horizontally supported.

The side stitching device 13 is arranged on the upper side in FIG. 1, and is a frame-shaped fixing base (which is hidden under the frame 12 and the cloth 3 and cannot be seen in the figure) for fixing the frame 12. The sewing machine device 17 is provided.

The sewing machine device 17 includes a beam portion 19 of a gate type sewing machine base 20 composed of legs 18, 18 and a beam portion 19.
Sewing machine heads 2 according to the number of tapes 4a to be sewn on
1 is lined up. That is, in this case, there are four sewing machine heads 21.

In this sewing machine device 17, the beam portion 19 is placed on the base frame 22, and the transfer direction of the frame 12 from the start table 11 to the sewing machine device 17 (indicated by an arrow P: hereinafter, this is the first transfer direction). It is installed so as to be movable along.

The base frame 22 is composed of a pair of main frames 23 extending in the first transfer direction and a sub-frame 24 laid between both ends of the main frames 23. A guide is provided on each main frame 23. A rod 25 is provided. The guide rods 25 are horizontally supported at both ends of the main frame 23 along the main frame 23, and the leg portions 18, 18 of the sewing machine base 20 are supported.
Respectively, and the sewing machine base 20, that is, the sewing machine device 17, moves along the guide rod 25 along the first transfer direction.

The sewing machine heads 21 are arranged at equal intervals on the beam portion 19 of the sewing machine base 20 at positions where the tape 4a is sewn onto the cloth 3, and are installed so as to be able to move up and down integrally with each other. ing. Further, the beam portion 19 is provided with a sewing machine bed (not shown) which is arranged below the cloth 3 and has a hook built therein.

Between the centers of the two sub-frames 24, a screw rod 26 which passes under the fixing base and is screwed to the leg portion 18 is horizontally bridged. This screw rod 26
Is immovable in the axial direction and is rotatably installed around the axis, and is rotated about the axis by a motor 27 attached to one of the sub-frames 24,
The sewing machine 17 is adapted to move as described above.

The vertical stitching device 14 is arranged on the right side of the horizontal stitching device 13 in FIG. 1, and its basic structure is as follows.
Similar to the horizontal stitching device 13, the moving direction of the sewing machine 28 provided is from the horizontal stitching device 13 to the vertical stitching device 14.
Along the transfer direction of the dough 3 (second transfer direction: arrow Q). That is, the moving direction is orthogonal to that of the lateral stitching device 13. In the vertical stitching device 14, the same components as those of the horizontal stitching device 13 are designated by the same reference numerals to simplify the description.

That is, the vertical stitching device 14 is provided with a frame-shaped fixing base (which is hidden under the frame 12 and the cloth 3 and cannot be seen in the figure) for fixing the frame 12 and a sewing machine 28. The device 28 includes a gate type sewing machine base 20 composed of legs 18, 18 and a beam portion 19, and the sewing machine heads 29 are arranged on the beam portion 19 according to the number of tapes 4b to be sewn. The sewing machine device 28 includes a motor 27
When the screw rod 26 is rotated by, the screw rod 26 is moved along the guide rod 25 installed on the base frame 22 including the main frame 23 and the sub frame 24.

That is, in the vertical sewing device 14,
The guide rod 25 is arranged so as to be orthogonal to the guide rod 25 of the lateral sewing machine 13.

In this case, three sewing machine heads 29 of the sewing machine 17 in the vertical sewing machine 14 are provided.

The sewing machine head 29 is used for the side stitching device 13.
The sewing machine head 21 has the same structure as that of the sewing machine head 21 of FIG.
It is attached to the beam portion 19 so as to be able to move up and down through the ball screw mechanism 30 and is operated by a drive mechanism (not shown).

The sewing machine head 29 has a conventionally well-known structure including a sewing needle 32, a sewing needle driving device 33, a thread winding case 34, a thread tightening portion 35, a balance 36 and a pressing plate 37, and is drawn out from the thread winding case 34. Sewing thread 38
After passing through the thread tightening portion 35 and the balance 36, the thread is passed through the sewing needle 32. In addition, the beam portion 19 is provided with a sewing machine bed (not shown) which is arranged below the cloth 3 and has a hook built therein.

In this case, the sewing machine head 29 is installed such that the side on which the thread tightening portion 35, the balance 36 and the like are arranged is directed to the beam portion 19 on the side opposite to the side stitching device 13. The direction is the sewing direction of the sewing machine 28 (rightward in FIG. 1).

A roll 4A wound with a tape 4b is rotatably attached to the sewing machine head 29 via a stay 39 extending in the sewing direction. The tape 4b pulled out from the roll 4A is used by the sewing machine head 2
9, a guide 41 attached via a stay 40, a lower surface of the pressing plate 37, and is guided below the sewing needle 32.
One end in the width direction is sewn to the cloth 3 by the sewing needle 32. The sewing machine head 29
After the tape 4b is sewn on the cloth 3, the tape 4b
There is provided a cutting mechanism (not shown) for cutting.

Cutter means 42 is attached to the front side of the pressing plate 37 in the sewing direction. The cutter means 42 is composed of two crescent-shaped cutters 42a having a blade portion at the upper end edge, which are arranged as a pair of left and right sides in the sewing direction. These cutters 42a
The tip of is the material 3 and the tape 4 of the holding plate 37.
Horizontal pressing plate 37a for pressing b to the sewing machine bed
It is located slightly above the back of the. The pressing plate 37 is one in which the pressing plate portion 37a and a swash plate portion 37b extending obliquely forward and upward from the pressing plate portion 37a are integrated.
2a is attached to the front end of the swash plate portion 37b.

A distance between the cutters 42a is, for example, about 3 times the thickness of the sewing needle 32, and this space is located just in front of the sewing needle 32.

On both sides of the cutter means 42 (only one side can be seen in FIG. 2), nozzles 43 for blowing air toward the front are arranged supported by a holding plate 37. A tube (not shown) connected to a compressor that supplies air is connected.

The sewing machine head 21 in the horizontal stitching device 13 is not provided with the cutter means 42 and the nozzle 43, but the other structure is exactly the same as that of the sewing machine head 29 of the vertical stitching device 14. The sewing direction is as shown in Figure 1.
Is set from bottom to top.

The end table 15 is arranged below the vertical sewing device 14 in FIG. 1 and to the right of the start table 11. A substantially square table body 44 is horizontally fixed on a frame (not shown). Then, the cloth 3 which has been sewn by the vertical sewing device 14 is transferred together with the frame 12 onto the table body 44.

Next, the operation of the above-mentioned device including the start table 11, the side stitching device 13, the vertical stitching device 14 and the end table 15 will be described.

On the start table 11, put the dough 3 into
The frame body 12 with its width direction aligned with the first transfer direction.
After being horizontally stretched and supported by, the frame body 12 is fixed on the fixing base of the lateral stitching device 13. At this time, the sewing machine device 17 of the side stitching device 13 is retracted to the start table 11 side.

While pulling out the tape 4a and advancing the sewing machine 17, the tape 4a is sewn onto the cloth 3 by each sewing machine head 21. in this case,
The end portion of the tape 4a on the right side in the width direction in FIG. 1 is sewn. As a result, the four tapes 4a are sewn in parallel with each other at equal intervals in the width direction of the cloth 3.

Next, after the tape 4a is cut by the cutting mechanism, the cloth 3 having the four tapes 4a sewn in its width direction is transferred together with the frame 12 onto the fixed base of the longitudinal sewing device 14. To fix. At this time, the sewing machine device 17 of the side stitching device 13 is retracted to the side stitching device 13 side.

In the longitudinal sewing device 14, while pulling out the tape 4b and advancing the sewing device 28,
Further, while blowing air from the nozzle 43, the tape 4b is sewn onto the cloth 3 by each sewing machine head 29. In this case, the end of the tape 4b on the left side in the width direction in FIG. 1 is sewn.

In this process, first, each tape 4a sewn on the cloth 3 is curled up by the air blown from the nozzle 43 from the end opposite to the seam, and the curled up part is , Each of the cutters 42a of the cutter means 42 moving forward, as shown in FIG.
Two cuts 5 and 5 are formed by cutting in two width directions. Then, the sewing machine head 21 sewes the portion between the cuts 5 and 5 to the cloth 3.

The above operation is performed every time the sewing machine device 28 passes over the tape 4a along the width direction of the cloth 3 previously sewn, whereby three tapes 4b are formed.
Are sewn in parallel with each other at equal intervals in the vertical direction of the cloth 3, and cuts 5 and 5 are formed at the portions of the tape 4a in the width direction where the tape 4a in the vertical direction intersects.

The tape 4b in the vertical direction by the vertical sewing device 14
Sewn on and cuts 5 and 5 to the tape 4a in the width direction
When the formation of the tape is completed, the tape 4b is cut by the cutting device, and then the cloth 3 is put together with the frame 12 on the end table
It is transferred onto the table body 16 of.

The above is one cycle. By repeating this, the tapes 4 (4a, 4b) are sewn in a lattice pattern,
A large number of fabrics 3 are manufactured in which cuts 5 are formed at the intersecting portions of the tapes 4 (4a, 4b), and the respective tapes 4 (4a, 4b) forming the block 1 can stand upright.

According to the vertical stitching device 14, the tape 4a is sewn in the width direction of the cloth 3 in advance, while the cut 5 is formed in the tape 4a, and the tape 4b is sewn substantially simultaneously in the vertical direction. As in the past, a human cut 5
Compared with the method of forming the cut, the cut 5 can be formed very easily without labor. Moreover, since the work of forming the cut 5 is performed at the same time as the sewing of the tape 4b, it is not necessary to separately provide a time for forming the cut 5, and therefore, the production amount per unit time is significantly increased and the mass productivity is improved. Is planned.

Further, in the case of the present embodiment, air is blown out from the nozzle 43 to roll up the tape 4a, so that each cutter 42a of the cutter means 42 smoothly enters under the tape 4a, and each of the cutters 42a cuts the tape 4a. The cutting is done without fail.

Furthermore, since two cuts 5 are formed, for example, even if the tape 4a sewn in the width direction is slightly distorted, if the sewing needle 32 passes between the cuts 5 and 5. The tape 4a in the width direction can stand upright, which is extremely effective.

In the above embodiment, the cutter means 42
Is composed of two cutters 42a arranged side by side.
Of course, one is enough. Further, as a cutter means for forming the cut line 5, for example, if the tape 4b is a chemical fiber such as nylon and can be cut by heat,
Various means such as a heated thin metal rod can be applied.

[0047]

As described above, according to the method of cutting the partition tape for forming the block of the futon according to the present invention, the first partition tape sewn on the cloth first is cut by the cutter means attached to the sewing machine. Since the second partition tape to be sewn later is sewn on the cloth at substantially the same time while forming the cut, it is extremely easy and labor-free compared to the conventional method of making the cut manually. Since it is possible to form the cut in the above, and it is not necessary to separately provide a time for forming the cut,
The production amount per unit time is significantly increased, and mass productivity is improved. Further, the sewing machine device of the present invention is extremely suitable for carrying out the above method.

[Brief description of drawings]

FIG. 1 is an overall plan view of a tape sewing device including a sewing machine according to an embodiment.

FIG. 2 is a perspective view of a sewing machine head in the vertical sewing machine according to the embodiment.

FIG. 3 is a partial plan view of a partition tape in which a cut is formed according to the embodiment.

FIG. 4 is a cross-sectional view of a duvet without a partition tape.

FIG. 5 is a cross-sectional view of a duvet having a partition tape.

FIG. 6 is a plan view showing an example of a cut formed on the partition tape.

[Explanation of symbols]

 1 Block 2 Feather (Batting) 3 Fabric 4a First Partition Tape 4b Second Partition Tape 5 Cut 28 Sewing Machine 29 Sewing Head 32 Sewing Needle 33 Sewing Needle Drive 38 Sewing Thread 42 Cutter Means

Claims (2)

[Claims] 1. A tape, which is sewn in a lattice pattern on the cloth for partitioning the batting filled in the cloth of the futon into blocks, can be erected for each block and has a predetermined length in the width direction of the tape. A method of cutting a partition tape for forming a block of a futon, which is formed by cutting and cutting a cut, wherein a first tape to be cut on a cloth is sewn by a sewing machine and then crossed with the first tape. When the second tape is sewn on the cloth by the sewing machine, the first tape is cut by a predetermined length in the width direction by the cutter means attached to the sewing machine to form the cut line, and the seam is made to be the first line. A method of cutting a partition tape for forming a block of a futon, which comprises sewing a second tape on a cloth along a gap formed in the tape. 2. A tape which is sewn in a grid pattern on the cloth for partitioning the batting filling the inside of the cloth of the futon into blocks so that each block can stand upright for a predetermined length in the width direction of the tape. A sewing machine for a partition tape for forming a block of a futon, which is cut by cutting, to sew the tape to the cloth, the sewing machine head including a sewing needle and a needle driving device is sewn relative to the cloth. 2. A sewing machine for a partition tape for forming a block of a futon, comprising cutter means for cutting the tape in a width direction of a predetermined length to form the cut in front of the sewing needle in the direction.