JP2002159770A - Curtain for which pleat sewing line positions of width joint and pleat base of curtain are made the same, sewing method therefor and sewing device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sew pleats by making the positions of the root of a pleat base and a width joint the same in a curtain provided with obliquely sewn pleats in the length direction with equal intervals in a top part. SOLUTION: The invention is constituted of a calculation formula of pleat position allocation for making the base of the pleat at the top part and the width joint of curtain cloth be the same, and the curtain pleat sewing device to be operated along the calculation formula. The curtain pleat sewing device is constituted of a turning plate 10, a first moving plate 20 and a second moving plate 30 bidirectionally moved in an X direction on the turning plate 10, an first clamping member 11 for clamping and holding the curtain cloth A provided on the edge part of the X direction of the turning plate 10, a second clamping member 12 for clamping and holding the curtain cloth A provided on the second moving plate 30, spatulas 13a and 13b for pleat bottoms arranged parallelly to a Y direction provided on the first moving plate 20, the spatulas 14a, 14b and 14c for pleat peak formation arranged parallelly so as to be engaged with the spatulas 13a and 13b for the peak bottoms and moved in the Y direction, a means for turning the turning plate 10 and 90 degrees around a part near the first clamping member 11 and a means for moving the turned turning plate 10 to a sewing machine side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the field of manufacturing curtains having oblique folds at equal intervals on the top of a curtain having a gusset.

[0002]

2. Description of the Related Art After a curtain fabric is spliced, it is generally practiced to provide a fold in the top portion at equal intervals over the entire width. After the curtain fabric is spliced, sewing folds are provided at equal intervals over the entire width of the top portion, but the positional relationship between the spliced position and the folds varies. The gusset may be between the folds, or may enter the fold set as shown in FIG.

[0003]

However, if there is a gusset in the fold, the gusset protrudes toward the room side so that the line of the gusset is conspicuous and extends over the entire length. The appearance is not good. In addition, it is said that the fold is not good in appearance because the fold has a width joint position as compared with other folds and thus has a large thickness. In addition, when the gusset is located between the folds, the gusset is conspicuous, and the beauty of the curtain is impaired despite the provision of the diagonally sewn folds to give a sense of quality. It has become necessary to make the drawstring as invisible as possible.

[0004] In order to meet the above-mentioned demand, it is necessary to provide a curtain fabric at a place where the width of the curtain fabric is hard to see.
The purpose of this is to cover the perforated line of the curtain fabric with the perforation of the fold by aligning the purse of the curtain fabric with the base of the fold, and to arrange the line of the purse from the curtain top to the hem in the drape convex state. It is. When the person in the center of the room heads for the curtain, the curtain on the left is at the left root of the fold in the curtain on the left, and the right curtain is at the root of the fold on the fold, and the top of the curtain is completely on the fold. The lower part is hidden behind a fold that is convex toward the room, and the lower part is not visible. Further, in the above method, when the fabric length is adjusted by the fold height, the fold height is different for each of the cloths that have been joined, and the design is not good, so the fold height may be the same in any fabric. good. As a technical issue, the drapery is provided on both the left and right sides of the base of the sewing fold, and on the premise that the fold spacing and the ridge height are all the same, a beautifully finished curtain, and furthermore, the It is an object of the present invention to provide a method and a device capable of laying and sewing a fold.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 is to provide a curtain having a sloping fold on a top portion by changing the width of the curtain fabric to the root of the fold in the length direction. This is to provide a curtain positioned at the same position as the above.

According to a second aspect of the present invention, there is provided a curtain in which a sloping fold in the length direction is provided on the top portion, in order to make the root of the sloping fold and the joining position of the curtain fabric the same, the positions of the folds and the folds are set. It provides a calculation method for determining the specifications such as the interval of the valleys and the depth of the valleys in the folds.

According to a third aspect of the present invention, if the curtain sewing manufacturer inputs only the numbers of predetermined items in the above complicated calculation, the allocation of the sewing fold positions and the specifications of the folds can be obtained, and the numerical values can be obtained according to the numerical values. An object of the present invention is to provide an automatic curtain fold sewing apparatus which can sew a sewing fold of a curtain and make the position of a base of the curtain equal to a width of the curtain.

[0008] After the splicing of the curtain fabric, the oblique stitching folds in the length direction are provided at equal intervals on the top portion so that the roots of the stitching folds coincide with the joining position of the first width, the second width, and the third width. It is necessary to adjust the depth of the valley folds in the fold to different amounts while keeping the ridge depth of the folds the same.

According to a fourth aspect of the present invention, there is provided a curtain finished by automatically changing the depth of a valley fold in each width of the fold at each width, and a method capable of finishing the curtain. An apparatus is provided.

[0010]

FIG. 6 shows a curtain according to the present invention.
That is, in a curtain having oblique stitching folds at equal intervals in the top portion in the length direction, the width position of the curtain fabric is matched with the base of the fold. Note that the gusset can be arranged on any desired side of the fold base.

As an embodiment of the present invention, a description will be given of a formula for calculating a fold position allocation for matching a position of the gusset with a root of a sewing fold in a curtain having a width of three widths. FIG. 1 shows the allocation of the folds in the case of three cloth widths, the relationship between the width joining position and the fold position, the cross-sectional view of the folds, and the like. Now, the overall finishing width is P, the ear widths at both ends are B, the number of folds for each width is A1, A2, A3, and the width dimensions are L1, L2, L3.
Specifying whether the width joint is to the left or right of the base of the fold gives the following formulas.

The actual cloth width of the first width: L1-B, the actual cloth width of the middle: L2, the actual cloth width of the last width: L3-B, the total number of folds: A = A1 + A2 + A3, the mountain interval: C = the finishing width P / (A-1), Finishing width of the first width: P1 = peak interval C * (A1-1) when the width joint is the right root of the fold, P1 = peak interval C when the width joint is the left root of the fold. * A1, finishing width of center width: P2 = C * A2 when width joint is right root of fold, P2 = C * A2 also when width joint is left root of fold: Finishing width of last width: ridge is fold P3 = C * A3 when the width joint is the left root of the fold, P3 = C * (A3-1)

Regarding the fold length at each width, the fold length at the first width G1 = {original width (L1-B) -finished width P1} / the number of folds A1 The fold length at the middle width G2 = (Original width L2-finished width P2) /
The number of folds A2 The required fold length G3 at the last width G3 = {original width (L3-B) -finished width P3} / the number of folds A3.

As for the fold valley depth d, if the fold height is D and the number of peaks is three, then d = (the required fold G1-D * 2) / 4 at the center width d at the center width = (Folding measure G2-D * 2) / 4 at the last width d = (folding measure G3-D * 2) / 4

As shown in FIG. 2, a device for forming a fold at a pre-allocated position includes a rotating plate 10 and a rotating plate 1.
0 in the X direction and X on the rotating plate 10.
Moving plate 30, a fixed rack 34 attached to the rotating plate 10, and a pin 3 attached to the first moving plate 20 to move both moving plates relative to each other.
There is provided a mechanism including a pinion 33 having an axis 2 as a shaft and a movable rack 31 coupled to a second movable plate 30. The rotating plate 10 is configured to be able to rotate 90 degrees counterclockwise on a center line in the X direction and around a portion near the first holding member 11 as an axis.

The fixed plate 1 is located substantially at the center of the edge of the rotating plate 10.
1a and a first holding member 11 for holding a curtain cloth A composed of a movable plate 11b moving in the Y direction is provided, and the second moving plate 30 is also provided with fixed plates 12a and Y
A second holding member 12 is provided to hold the curtain fabric A made of a movable plate 12b that moves in the direction.

The first movable plate 20 has two fold-valley-forming spatulaes 13a and 13b arranged in parallel in the Y direction, and the two fold-valley-forming spatula 13a and 13b, and has a peak height in advance. Three fold crest forming spatulas 14 which are arranged in parallel and move in the Y direction so as to mesh with each other at a fixed amount.
A spatula device consisting of a, 14b, and 14c is provided.

As shown in FIG. 4A, a spatula 1 for forming a mountain
4a, an air cylinder 18 is fixed to a support 17a, and a piston rod 18a of the air cylinder 18 is attached to each support 17a, 14a, 14b, 14c of the mountain forming spatula 14a, 14b, 14c.
Insert the holes provided in 17b and 17c,
It is fixed to. There is also a penetrating piece 18b so that the piston rod 18a can slide inside, and this penetrating piece 18b can also slide through a hole provided in 17b.

Slide guides 15a are provided on both sides of the spatula air cylinder 18, and guide rods 15 are inserted through the slide guides 15a.
Through a slide guide 15b fixedly inscribed in a hole provided at the front end thereof, and a distal end thereof is connected to 17c.

As shown in FIG. 4B, a set screw 19 is provided at the end of the side 17b opposite to the spatula support 12 and the guide plate 1 is rotatable around the set screw 19 in a limited manner.
6 is attached. On the other hand, spatula 14a, 14
Guide pins 19a, 19b are provided on the respective support members 17a, 17c of b. Guide plate 16
A long hole is provided near the opposite ends of each of the holes so that the guide pins 19a and 19b can slide at equidistant positions with the set screw 19 as a symmetric axis.

With the above construction, when the piston rod 18a of the air cylinder 18 for spatula protrudes, the guide rod 15 also expands at the same time, and the spatula 1 for forming the folds is formed.
Supporting device 17a for 4a and supporting device 1 for spatula 14c for forming folds
When the guide piece 16 rotates in the clockwise direction in FIG. 4 (b) in parallel with this, the guide piece 16 is opened about the support 17b of the fold crest forming spatula 14b. Moving. As a result, the three folds forming spatulas 14a, 14b, 14 open at substantially equal intervals.

When the piston rod 18a is retracted, the guide rod 15 also contracts, and the support 17a
And the support 17c come closer to the support 17b,
When the guide piece 16 rotates in the counterclockwise direction in FIG. By this operation, the three fold crest forming spatulas 14a, 14b, and 14c are configured to be narrowed at equal intervals.

The inverted L-shaped spatula device supporter 12 is formed by air cylinders 40 with spatula forming spatula 14a, 14b,
14c is driven in the Y direction to reciprocate between the positions shown in FIGS. In the position shown in FIG. 3, the spatula forming spatula 14a, 14b, 14c is a spatula forming spatula 13
a, 13b, and the top of the curtain fabric A is folded.

The air cylinders 13a and 13b provided on the first moving plate 20 are arranged between the spatula-forming spatula 14a, 14b and 14c in a state where the space is widened. The space between the spatula-forming spatula 14a, 14b, and 14c is reduced so that the space can be changed correspondingly.
Further, the spatula forming spatula 13a, 13b moves in the vertical direction with respect to the first moving plate 20, and the first moving plate 20
It is configured to be able to enter and exit the surface of the.

A process of forming a fold on the curtain A by the apparatus having the above-described configuration will be described.

(1) As shown in FIG. 2 and FIG. 5A, the first holding member 11 and the second holding member 12 are opened at a predetermined interval, and the fixed plate 11a and the movable plate 11 are opened.
b, and between the fixed plate 11a and the movable plate 11b, the curtain cloth A is inserted, and the left end of the first holding member 11 and the left end of the curtain cloth A (generally, the left end of the ear) are aligned. The curtain material A is held between the first holding member 11 and the second holding member 12.

(2) As shown in FIGS. 3 and 5B, the air cylinder 17 is operated while the first moving plate 20 and the second moving plate 30 are moved toward the edge of the rotating plate 10. The spatula forming spatula 14a, 14b, 14c is raised by a preset distance, and the spatula forming spatula 13a, 13b is raised.
The curtain cloth A is folded in cooperation with (3) the spatula air cylinder 18 is operated, and the spatula forming spatula 14 is operated.
a, 14b, 14c and folds forming spatula 13a, 13
(4) After the interval of b is narrowed, (4) as shown in FIG.
Of the b and 14c, the rotation plate 10 is rotated 90 degrees counterclockwise about the intersection of the left spatula 14a and the X axis as the rotation center as shown in FIG. In the folded state, the rotating plate 10 is supplied to the sewing position of the sewing machine M as shown in FIG.

(6) After inserting the waiting pin of the sewing machine M into the base of the supplied fold and temporarily fixing it, (7) the first moving plate 20
Then, the spatula forming spatula 13a, 13b is moved in the vertical direction (perpendicular to the paper surface), and is extracted from the fold, (8)
The rotating plate 10, the first holding member 11 and the second holding member 12, and the spatula forming spats 14a, 14b, and 14c are retracted, and (9) the suture lines 8b, 8c, and 8d as shown in FIG. Sutures along to secure the folds. (10) During the sewing of the sewing machine, the rotating plate 10, the first holding member 11, and the second
Holding member 12, spatula forming spatula 14a, 14b, 14
The c and the fold valley forming spatulas 13a and 13b can be returned to the original preparation positions shown in FIG. 2 to form the next fold. (11) When the sewing by the sewing machine is completed, the completed curtain fold is pulled out to the right.

By repeating the above steps, folds are formed at equal intervals. For example, when the width of the fold is 25 mm and the width of the fold is brought to the right of the base of the fold, the inside of the holding member 12 (in FIG. Member 1
A left side (in FIG. 2) of the curtain is applied with a diagonal gauge 40 having a width of 15 mm and a length inclination of 5/100 in the length direction along the left side (in FIG. 2) of the curtain. Align joints. (See FIG. 8) After the holding member 12 is moved so that the width joint comes to the above position, the holding member 12 is held. Similarly, when the width joint is made to coincide with the left side of the base of the fold, before the curtain fabric A is held by the holding member 11, the inside of the holding member 11 (in FIG.
After the curtain cloth A is moved so that the right edge of the oblique gauge 40 is aligned with the width joint line, the clamping member 11 is clamped.

The operation of such a series of devices is performed by a control device using a microcomputer except for the operation of manually adjusting the positional relationship between the joining line and the chuck. This is done automatically according to the program.

[0031]

As is clear from the description based on the above embodiments, the present invention provides a method for calculating the fold position allocation of a curtain and an apparatus for automatically forming a diagonal stitch fold of a curtain according to the calculation method. According to the present invention, it is possible to manufacture a curtain in which the width of the curtain fabric and the stitching position of the fold base are the same. This eliminates the need for the operator to perform complicated calculations, greatly reducing the labor required, and obtaining a high-grade curtain with sloping folds desired by the customer. By adopting the diagonal stitching folds, the ridges between the folds are narrow, the skirts are wide, and the trapezoids are horizontally connected. Therefore, the line seen from the front of the top part draws a gentle arc, which is hung on the curtain rail, causing a force to lift each stitch fold part, and thereby the drape falling from each stitch fold to the hem The line (shape of the cross-sectional waveform) falls perpendicular to the floor, giving a good-looking finish, and a curtain with uniform fold height and fold spacing can be obtained. In addition, by adopting the method described above, by changing the valley depth d of the fold by aligning the height of the fold, it is possible to absorb some of the dimensions generated by the fabric, such as sewing, with high accuracy and stability. The production of curtains became possible.

[Brief description of the drawings]

FIG. 1 (a) is a diagram showing the relationship between the fold position allocation and the width joint position according to the present invention; FIG. 1 (b) is a diagram illustrating the shape of the fold

FIG. 2 is a front view of an apparatus for forming folds on a curtain according to the present invention.

FIG. 3 is a front view showing a state where curtain fabric is folded into folds by the apparatus of the present invention.

FIG. 4 is a plan view (a) and a front view (b) showing a structure for driving a fold forming spatula portion.

FIG. 5 is an explanatory diagram showing a process of forming a fold and supplying the fold to a sewing machine.

FIG. 6 is a perspective view showing a positional relationship between a curtain fold and a drawstring according to the present invention.

FIG. 7 is a perspective view showing a positional relationship between a fold and a drawstring of a conventional curtain.

FIG. 8 is a work procedure diagram for making the width joint and the oblique fold stitch line position of the curtain of the present invention the same.

[Description of Signs] A Curtain B Splice line 10 Rotating plate 11 First holding member 12 Second holding member 13a, 13b Spatula for fold valleys 14a, 14b, 14c Spatula for forming fold mountain 20 First moving plate 30 second moving plate 31 moving rack 33 pinion 34 fixed rack 40 oblique gauge

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuki Chiba 190, Hikami, Tatsuno-cho, Tatsuno-cho, Hyogo Prefecture Inside the Far East Industrial Machinery Company (72) Inventor Yoshikazu Suzuki 3-25-3 Yoyogi, Shibuya-ku, Tokyo (72) Inventor Yasuaki Matsui 190 Tatsuno-cho, Tatsuno-cho, Tatsuno-shi, Hyogo Pref.East-Earth Machinery Co., Ltd. BB01 CC01 FF02 FF07 3B150 BA00 CE27 EG01 EG04 EG06 JA31

Claims (4)

[Claims] 1. A curtain having a plurality of equally spaced stitching folds in a top portion, a width joining line of the curtain fabric, and stitching at the base of the fold in which the height of the fold changes between the top side and the hem side by diagonal stitching. Curtain characterized by the same position of the line. 2. A curtain fold position allocating method for a curtain having a plurality of equally-spaced diagonal stitches at a top portion, wherein the width joint of the curtain fabric and the stitch line at the root of the fold are set at the same position. 3. In a curtain having a plurality of diagonally sewn folds at the top portion at equal intervals, it is possible to sew the base of the fold by setting the width joint of the curtain fabric and the sewing line at the base of the fold at the same position. A sewing machine for sewing curtain folds. 4. The curtain according to claim 1, wherein the height of all the folds is the same by adjusting the valley depth of the folds for each width. Curtain fold sewing device.