JPH10201971A - Length determining device for curtain fabric, web feeding method, and positioning device for cutting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device to manufacture a curtain fabric of a specified length to whose top edge a lining is sewn fast and establish a method for feeding a web, whereby the productivity is enhanced and automatic operation is established while the facility made good use of. SOLUTION: A web 7 is measured and cut, and to its top edge a core 27 is sewn fast, wherein the first cutter 33 to cut the top of the web 7 and a living sewing machine 22 are installed behind a feed roller 14 which feeds the web to the cutting position, and understream of the first cutter the second cutter 35 to cut to bottom is installed with possibility of positional adjustment, and farther downstream, a bottom sewing machine 36 is installed which sews the bottom edge of the material upon folding it back. The web is supplied to this device with the bottom leading. If the web 7 is supplied being upset up and down, an existing bottom sewing machine nay be used. Any web 7 having repetitive patterns in the top-to bottom direction undergoes pattern sensing or storing of the repeat length in memory, and the web feeding to the cutting position 24 is made corresponding to the dimension as integer times as large as the repeat length. Thereby the positions of the top-bottom patterns can be made constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for manufacturing a curtain, and more particularly to an apparatus (hereinafter referred to as "length") for manufacturing a curtain cloth cut to a predetermined length and sewn with an interlining on a top. And a method for feeding the raw material to the length determining device, and a positioning device for the cutting position of the raw material in the length determining device.

[0002]

2. Description of the Related Art As shown in FIG. 7, an ordinary curtain 1 has a rectangular shape in which a width T and a length R are determined to predetermined dimensions, and an upper side 2 and a lower side 3 on which interlining is sewn. , Four sides,
4 and a fold 5 is provided on the upper side 2 if necessary. Further, in the curtain 1 with the top and bottom pattern, in addition to the width T and the length R of the curtain, the first pattern 6 from the upper side 2 is used.
The distance Q to the top end 6a is determined. Pattern 6
Is formed by weaving, knitting or printing, and the pattern has a repeat length P.

FIG. 8 shows the back surface of a curtain cloth 25 having a length W after the centering sewing, and an interlining 27 having a width S is sewn along a top side 26. The curtain cloth 25 after the centering sewing is valley-folded at two chain line positions shown in the drawing, the hem side 28 is turned back by the width X, the hem stitch is performed by a lockstitch sewing machine, and the interlining material 27 is folded inward to remove the folds. To finish the curtain of FIG. As a material for the curtain, a drape ground having a high density of warp yarns and a lace ground having an openwork pattern are mainly used. A drape ground or a lace ground having the top and bottom pattern 6 (hereinafter referred to as “raw cloth”) is wound around a paper tube with the top side of the pattern as a drawer side, and is carried into a sewing factory.

As shown in FIG. 9, the conventional sewing process of a curtain includes the steps of ear sewing, inversion, measuring, cutting, centering sewing, hem sewing, and fold removal sewing. Has a support roller 8 for supporting a roll-shaped raw material 7 on the outer peripheral surface, and ear sewing machines 11 arranged on both sides of a table 9 as shown in FIG. The ear stitching work is performed by passing through the ear stitch sewing machine 11 with the pattern surface 12 of the top and bottom pattern 6 of the raw material 7 facing up and the top side as the top, sewn continuously while turning both ears back, and swinging it down onto the cart 13. . The web 7 dropped on the cart 13 is folded in a zigzag shape with the top side of the top and bottom pattern 6 facing downward.
If the curtain width T is 150 or 200 cm,
After one ear stitching, ears without ear stitches are sewn to produce a predetermined width. At this time, care must be taken to match the pattern of the raw fabric.

[0005] Next, as shown in FIG.
Is reversed and the top side of the top and bottom pattern 6 is set as the drawer side, and the carriage is moved to the length determination device 14. The length determining device 14 is a device that obtains a curtain fabric 25 having a fixed length W from a raw material in accordance with the pattern length of the pattern, and performs operations such as measuring, cutting, and core sewing.

The length determining device 14 shown in FIG.
It has a single-roof slide 15 and a horizontal mounting table 16 connected to the lower side of the slide. A feed roller 17 is suspended along a ridgeline of the slide 15. In the vicinity of the feed roller of the slide 15, a rotary cutter 1 traversing the slide 15 is provided.
9, a slide 15 is provided downstream of the cutter.
A sensor 21 for detecting the leading edge of the web 7
Are provided movably. The sensor 21 is movable and fixed along the slide so that the desired curtain fabric length W can be set. A cored sewing machine 22 is disposed at the far corner at the tip of the mounting table 16 (on the side opposite to the slide). With the pattern surface 12 facing up and the top side of the top and bottom pattern at the top, the slide 1 is intermittently fed by the feed roller 17.
5 and the mounting table 16. The intermittent driving operation of the feed roller 17 is controlled by the controller 23.

First, the operator drives the motor 30 to rotate the feed roller 17, and visually positions the raw material at the cutting position 24 of the slide 15. The position of the raw fabric at this time is a position where the dimension from the top and bottom pattern 6 to the cutting position 24 is a predetermined length U (= S + Q). The cutter 19 is traversed and cut, and the first excess length is removed to form the leading edge of the raw material that becomes the top side of the curtain fabric.

Next, the controller 23 fast-forwards the web 7 by a distance slightly shorter than the desired curtain fabric length W,
The speed is slowed and the sensor 21 waits until the leading edge of the web is detected. The distance between the cutting position 24 and the sensor 21 is a length R + S + X = W in consideration of the folding allowance S and the hem winding allowance X of the interlining 27 to be described later in addition to the length R of the curtain. The controller stops the rotation of the feed roller based on the detection signal from the sensor 21, and cuts the web 7 with the cutter 19. Thereby, the curtain fabric 25 having the length W is obtained. The curtain fabric 25 slides down the slide 15 and its top 26 reaches the tip of the mounting table 16, and the operator operates the centering sewing machine 22 to move the top 26 of the curtain fabric.
Is sewn to the back surface of the.

During the centering operation, the controller 23 slowly rotates the feed roller 17 to feed the original fabric by an extra length V so that the dimension from the top and bottom pattern to the cutting position becomes a predetermined length U. To stop. In this state, the cutter 19 is traversed to cut off the extra length V. When the work of centering the first curtain fabric is completed, the same operation is repeated to perform the work of measuring, cutting, and centering sewing.

[0010] Curtain cloth 25 after completion of core sewing
Are stacked on a trolley and sent to a hem stitching unit (not shown). The hem side 28 is turned inward by the dimension X, and the hem sewing operation is performed by a lockstitch sewing machine. Further, the curtain 1 is sent to a fold removing unit, and the interlining 27 is bent inward and sewn while removing the folds of a fixed width.
Is completed.

As described above, the conventional sewing process of the curtain is such that the top side of the top and bottom pattern of the raw fabric is fed to the respective steps with the top side of the pattern and the pattern surface facing the front side. It was essential to provide an inversion step between the steps of measuring, cutting, and centering and stitching (hereinafter, referred to as “length determining step”). Therefore, one worker is required for the ear stitching and reversing processes, and one worker is required for the measuring and cutting processes.
One workman was required for the core sewing process. That is, the conventional length determination process requires two workers.

As described above, since a large number of workers are required in the conventional curtain sewing process, automation has been strongly desired. Based on such a request, a curtain sewing apparatus has been proposed which performs a series of automatic operations such as ear sewing, reversing, measuring, cutting, centering sewing and hem sewing (Japanese Unexamined Patent Publication No. Hei 6-1994).
No. 210084). In this apparatus, a raw material pool is provided between each conventional process. The raw material pool enables a stable supply of the raw material by omitting the reversing work of the raw material and reducing the difference in the processing speed of each unit. The method of feeding the raw material in the above-described apparatus is the same as the conventional feeding method in which the pattern surface of the raw material is turned to the front side and the top side of the top and bottom pattern is sent to each step with the top side as the head.

[0013]

However, the apparatus described in the above publication cannot be used for a curtain having a width of 150 or 200 cm. Further, when an excessive material is placed on the material pool, the placed material exerts a tension on a drawer portion of the material pool, so that there is a problem that the material is deformed in the longitudinal direction and a pattern shift occurs. Further, in the apparatus described in the above-mentioned publication, the work speed before and after is restricted by the measuring operation having a long working time, and a new problem that the production efficiency is reduced by automation occurs.

According to the present invention, there is provided a curtain length determining apparatus which can effectively and efficiently use existing facilities and can partially achieve automation without lowering production efficiency. It is an object to provide a method of feeding a raw material.

[0015]

According to a first aspect of the present invention, there is provided a curtain length determining apparatus for measuring a raw material 7 and cutting it to produce a curtain material 25 having a predetermined length.
In the apparatus for determining the length of the curtain fabric which sew the interlining 27 along the top 26 of the curtain fabric, a hem stitch sewing machine 36 for folding and sewing the hem 28 of the cut curtain fabric is attached to the length determining device. And a second cutter 35 for cutting the hem side, and the first cutter 33 and the core are provided behind the feed roller 17 for feeding the raw material to the cutting position. The sewing machine is characterized in that an attaching sewing machine 22 is arranged, and a hem sewing machine 36 is arranged downstream of the second cutter 35.

In the cutting positioning device according to the second aspect, the raw material 7 having the top and bottom pattern 6 having the repeat length P is placed at the cutting position 24.
And a computer 23 that controls the feed roller 17 intermittently.
Is a cutting position in which the cutter provided at the cutting position 24 is traversed to cut the raw material, and the raw material 7 is positioned at the cutting position 24 so that the top and bottom pattern 6 comes at a fixed distance U from the top 26 of the curtain fabric 25. In the device, the distance B from the cutting position
A TV camera 18 that recognizes the top and bottom pattern 6 at a distance
The television camera is connected to the computer 23, and the computer 23 stores a value A obtained by subtracting the fixed distance U from the set length W of the curtain fabric 25. Means, and a calculating means for obtaining a length multiplied by a maximum multiple n which does not exceed the storage value A when the pattern repeat length P is multiplied by an integer, and the television camera 18 After the recognition, the feed roller 17 sends the raw material to the cutting position 24 by a length obtained by multiplying the repeat length P by the maximum multiple n, and further sends the same length U by adding or subtracting the distance B. It is characterized by the following.

According to a third aspect of the present invention, there is provided a cutting positioning device comprising: a feed roller 17 for intermittently feeding a raw material 7 having a top and bottom pattern 6 of a repeat length P from a hem side to a cutting position 24; A sensor 41 disposed at a position spaced downstream from the cutting position 24 by a distance corresponding to the length W
And a computer 23 for controlling the feed roller 17. The computer 23 subtracts the distance U from the top 26 of the curtain fabric to the first vertical pattern 6 from the set curtain fabric length W. Means for obtaining the value A obtained by the calculation, and arithmetic means for obtaining a length obtained by multiplying the minimum multiple value m exceeding the stored value by multiplying the pattern repeat length P by an integer. Upon receiving the detection signal, the computer calculates the extra length V obtained by subtracting the curtain fabric length W from the repeat length P multiplied by the minimum multiple m.
It is characterized by only sending.

According to a fourth aspect of the present invention, there is provided a method of feeding a raw material to a length determining device, wherein a raw material 7 having a top and bottom pattern 6 is supplied to an ear stitch sewing machine 11 from a top side, and both ears are sewn by the ear stitch sewing machine. The method of feeding the web 7 zigzag-shaped down onto a trolley after that to the length determining device 14 is characterized in that the web on the trolley is supplied to the length determining device 14 from the hem side. .

According to a fifth aspect of the present invention, there is provided a method of feeding a raw fabric to a length determining device, wherein a raw fabric 7 having a top and bottom pattern 6 is supplied to an ear stitch sewing machine 11 from the top side, and both ears are sewn by the ear stitch sewing machine. In the method of feeding the raw material 7 which has been shaken in a zigzag shape onto a bogie to the length determining device 14, the raw material is fed to the length determining device 14 with the back side of the raw material facing up and the pattern of the raw material is 6
The television camera 18 for recognizing is arranged on the back side of the supplied web.

[0020]

According to the first aspect of the present invention, a hem-sewing machine 36 is attached to the length determining device 14, and a cutting cutter for cutting the top side of the raw material 7 and a second cutter for cutting the hem side are provided. Since the first cutter 33 and the centering unit 22 are arranged behind the feed roller 17 of the measuring unit, and the hem sewing unit 36 is arranged downstream of the second cutter 35. In addition, the steps of measuring, cutting, and centering can be performed in series and automatically, and the number of workers can be reduced.

According to a second aspect of the present invention, there is provided a television camera for recognizing a top-and-bottom pattern at a position separated by a distance B from a cutting position.
8 from the length W of the curtain fabric 25 set by the computer 23 connected to the TV camera, the width S of the interlining and the distance Q from the upper side 2 of the curtain 1 after the sewing is completed to the first pattern 6 A obtained by subtracting the value U obtained by adding
And a maximum multiple n not exceeding the storage value of the storage means when the pattern repeat length P is multiplied by an integer.
After the television camera 18 recognizes the pattern, the feed roller 17 sends the raw material to the cutting position 24 by the length obtained by multiplying the repeat length P by the maximum multiple n. Since the distance B from the television camera 18 to the cutting position is added or subtracted from the above U, a positioning device for the cutting position of the raw material different from the conventional one can be provided.

According to the third aspect of the present invention, the cutting position 24 is set at a distance corresponding to the length W of the set curtain cloth 25.
The computer 23 connected to this sensor is provided with a first top-and-bottom pattern 6 from the top 26 of the curtain fabric from the set top length W of the curtain fabric. Means for obtaining a value A obtained by subtracting the distance U to the control means, and calculating means for obtaining a length obtained by multiplying a minimum multiple value m exceeding the stored value by multiplying the pattern repeat length P by an integer. After receiving the detection signal from the sensor 41, the extra length V is obtained by subtracting the curtain fabric length W from the length obtained by multiplying the repeat length P by the minimum multiple m. Accurate cutting positioning can be performed irrespective of the density and shape of the cutting. In addition, by using the invention of claim 2 and the invention of claim 3 together, it is possible to obtain a highly reliable cutting and positioning device in which the consumption of the video camera is suppressed.

According to the fourth aspect of the present invention, since the raw material 7 on the trolley is fed from the hem side to the length determining device 14, the step of reversing the raw material on the trolley can be omitted.

According to a fifth aspect of the present invention, the back side of the web is fed to the length determining device 14 with the back side facing up, and a television camera 18 for recognizing the pattern 6 of the web is arranged on the back side of the web. Therefore, the structure of the cored sewing machine can be simplified.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a sewing process of a curtain according to the present invention. After the ear stitching process, the scale measurement, cutting, centering stitching and hem stitching are performed in one step, and then fold removal sewing is performed. By using the length determining device 14 of the present invention described later and supplying the back side of the raw fabric from the front side and from the hem side, the reversal work after the ear stitching becomes unnecessary.

FIG. 2 shows the ear stitching unit 10, the length determining device 14 for performing the measuring, cutting, and centering sewing operations, and the hem stitch sewing machine 36. The ear stitching unit 10 has the same structure as the conventional one. Length determining device 1 of the present invention
4 includes a single-roof slide 15 and a horizontal mounting table 16 connected to the lower side thereof. A narrow horizontal portion 31 is connected to the ridgeline side of the slide 15, and a centering sewing machine (for example, a curtain automatic centering machine manufactured by Kyokuto Sanki Co., Ltd.) 22 is provided so as to cross over the horizontal portion 31. Have been. The centering sewing machine 22 is movably provided on a rail 32 that moves up and down on a horizontal portion, and reciprocates on the rail by a traveling motor 30 provided at a rail end. A rotary first cutter 33 is provided on the upstream side of the centering sewing machine 22, and immediately after the raw material 7 is cut by the first cutter 33, the interlining is sewn. This operation is performed by an interlock sewing machine. The traveling motor 30 and the motor of the centering sewing machine are controlled by a computer (for example, a controller CV-100 manufactured by KEYENCE CORPORATION) 23 disposed below the slide.

The feed roller 1 extends along the leading edge of the horizontal portion 31.
7 are mounted. The drive motor of the feed roller is also controlled by the computer 23. A sheet guide 34 is provided below the feed roller, and this sheet guide regulates the sheet 7 pulled up from the carriage 13 in a vertical plane. A television camera (for example, a camera CV-C1 manufactured by KEYENCE CORPORATION) 18 for identifying the pattern of the raw material is arranged below the horizontal portion 31 toward the back side of the raw material 7, and extends from the cutting position 24 to the television camera 18. The distance is B. The output signal of the television camera 18 is given to the computer 23.

A band-shaped second cutter (band cutter) 35 is provided at the lower portion (downstream side) of the slide 15 so as to be freely changeable in position. A solenoid that moves the second cutter up and down is controlled by a computer 23. . The position of the second cutter is
It is a position away from the first cutter 33 by the length W of the curtain fabric. When it is desired to change the length W of the curtain fabric, the second cutter is moved by the changed length and fixed at the position after the movement. A hem stitch sewing machine 36 is fixed to the back side of the tip side (the side on the side opposite to the slide) of the mounting table 16. A movable hem stitch sewing machine may be used.

Next, a method of feeding the raw material to the length determining device will be described. The web is provided wound around a paper tube with the top side of the top and bottom pattern as a drawer side. The web is placed on the supporting roller 8 so that the pattern surface faces the front side and passes through the ear stitching unit. Pull out the leading edge of the web on the support roller,
The two ears of the raw fabric are wound in three turns with the ear stitch sewing machine 11 on both sides of the table 9 of the ear stitching unit 10 and sewn. The carriage is moved to the length determining device 14 as it is, and the rear end side of the zigzag original sheet is passed through the original sheet guide 34 and held by the feed roller 17. At this time, the pattern surface of the raw fabric is set to the back side.

FIG. 3 is a schematic diagram showing a cutting and positioning device for a raw material. When the start switch is turned on, the computer 23 drives the motor of the feed roller 17 and stops when the television camera 18 visually recognizes the first pattern 6 of the original web. The computer 23 calculates a value A obtained by subtracting a value U obtained by adding the width S of the interlining 27 and the distance Q from the upper side of the curtain after sewing is completed to the first pattern from the length W of the curtain cloth 25, When the repeat length P of the pattern is multiplied by an integer and multiplied by the maximum multiple n that does not exceed the value A, the original cloth 7
Send. Further, the computer 23 drives the feed roller to send the raw material by a value obtained by adding the sum value U to the distance B,
A drive command is given to the centering sewing machine 22 and the traveling motor 30. The rail 32 of the cored sewing machine 22 moves down to
On the slide 15 and the cored sewing machine 22
While cutting with the cutter 33, the cutting end is frayed and centered. During this core sewing operation, the computer 2
3 gives a drive command to the second cutter 35 to cut off an unnecessary portion. When the centering sewing is completed, the rail 32 moves upward, and the centering sewing machine 22 returns to the original position.

As the rail 32 moves upward, the curtain fabric 2
5 is released and slides down the slide 15 so that the skirt of the curtain fabric reaches the tip side of the mounting table 16. The operator performs the hem sewing with the hem sewing machine 36 by bending the hem side twice. Thereafter, the crease removing sewing is performed in the same manner as in the related art, and the sewing operation of the curtain is completed.

FIG. 4 shows another example of the length determining device. The length determining device 14 includes two conveying belts 3 in the longitudinal direction.
7 is provided. A feed roller 17 is mounted on the workbench along its rear side, and a hem sewing machine 36 is installed at one corner of the front side. The transport belt 37 and the feed roller 17 are individually driven at the same transport speed. A rectangular transparent plate 39 is mounted in the center of the back of the workbench, and the television camera 18 is disposed immediately below the transparent plate.

After the completion of the ear stitching operation, the operator makes the back side of the web 7 placed on the carriage 13 in a zigzag shape the front side, and clamps the bottom side of the top and bottom pattern with the feed roller. When the start button is pressed, the computer performs measurement and cutting.
As shown in FIG.
Then, the motor of the conveyor belt is driven, and stops when the television camera 18 visually recognizes the top end 6a of the first pattern 6 of the raw material. Then, the value A obtained by subtracting the value U obtained by subtracting the width U of the interlining 27 and the distance Q from the upper side of the curtain after the sewing is completed to the first pattern from the length W of the curtain cloth is calculated. A is obtained by multiplying the repeat length P of
Is fed by a length multiplied by the maximum multiple n not exceeding the value, and further by a length obtained by subtracting the distance B from the sum U, to position the raw material at the cutting position. Hereinafter, the operation is the same as that of the above-described embodiment except for the driving of the transport belt. Curtain fabric hem 28
The computer stops the conveyor belt automatically when the robot comes to the front of the work table. The operator uses the hem stitch machine 36
Perform hem stitching and proceed to fold removal work.

FIG. 6 shows still another embodiment of a cutting and positioning apparatus for a raw material. In this embodiment, a sensor 41 whose position can be changed is provided below a slide in place of a television camera. The position of the sensor 41 is a position separated from the cutting position 24 by the length W of the curtain cloth, that is, the second cutter 3.
5 is fixed in a certain position. The operator causes the feed roller 17 to be sandwiched by the feed roller 17 with the back side facing the back side and the bottom side of the top and bottom pattern drawn out, and drives the motor 30 to visually position the base sheet at the cutting position 24 of the slide 15. . That is, the distance from the cutting position 24 is a predetermined length U
(= S + Q). When the positioning is completed, the computer 23 sends the first cutter 33
Sewing machine (interlock sewing machine) 22 provided with
Then, the second cutter 35 is operated to obtain the curtain fabric of the length W centered on the top side and the fabric of the first extra length to be discarded.

Next, the computer confirms the completion of the centering operation and gives a drive command to the motor 30. The computer calculates a distance U from the set curtain fabric length W to the first top-and-bottom pattern 6 from the top 26 of the curtain fabric.
Is subtracted to obtain a stored value A, and a length obtained by multiplying a minimum multiple value m exceeding the stored value by multiplying the pattern repeat length P by an integer is obtained. The computer receiving the signal when the leading edge (hem) of the raw material has passed the sensor 41 calculates the length obtained by subtracting the curtain fabric length W from the length obtained by multiplying the repeat length P by the minimum multiple m ( (Extra length after the second) V is sent.
This length V can be measured by measuring the number of rotations of the feed roll, or as shown in FIG.
As shown in (1), a sensor 42 can be provided downstream of the sensor 41 at a distance V and measurement can be performed.

As described above, the arrangement in which the sensor 41 is provided instead of the television camera has a feature that the cutting position can be performed even in the case of a top and bottom pattern which cannot be read by the television camera. Also, if the TV camera and the sensor 41 are used together, the TV camera can be operated only when a detection signal from the sensor 41 is received, and the consumption of the TV camera can be prevented. Furthermore, the cutting positioning speed can be improved by the television camera, and a malfunction in the case of a pattern that is difficult to be read by the television camera can be prevented, so that a highly reliable cutting positioning device can be provided.

[Brief description of the drawings]

FIG. 1 is a view showing a manufacturing process of a curtain having a length determining process of the present invention.

FIG. 2 is a side view of the ear stitching unit and the length determining device.

FIG. 3 is a schematic diagram showing a first cutting positioning device of a raw material.

FIG. 4 is a perspective view showing another example of the length determining device.

FIG. 5 is a schematic view showing a second cutting positioning device of the raw material.

FIG. 6 is a schematic view showing a third cutting positioning device of a raw material.

FIG. 7 is a perspective view of a curtain.

FIG. 8 is a perspective view of a curtain fabric after cored.

FIG. 9 is a diagram showing a conventional curtain sewing process.

FIG. 10 is a perspective view of an ear sewing unit.

FIG. 11 is a perspective view showing a reversing step.

FIG. 12 is a perspective view of a conventional length determining device.

[Explanation of symbols]

 1 Curtain 2 Upper side 3 Lower side 6 Pattern 7 Raw material 11 Ear stitch sewing machine 14 Length determining device 17 Feed roller 18 TV camera 22 Core sewing machine 23 Computer 24 Cutting position 25 Curtain fabric 26 Top side 27 Interlining 28 Bottom side 33 First cutter 35 Second cutter 36 Hem stitch sewing machine 41 Sensor W Length of curtain fabric B Distance from TV camera to cutting position U Distance from top edge of curtain fabric to top edge of pattern P Repeat length of top and bottom pattern V Extra length

Claims (5)

[Claims] An original fabric (7) is measured and cut to produce a curtain fabric (25) having a predetermined length.
A hem stitch sewing machine (36) that folds and cuts the hem (28) of the curtain fabric cut by the length deciding device to sew the interlining (27) along the top edge (26) Then, two cutters, a first cutter (33) for cutting the top side of the web (7) and a second cutter (35) for cutting the hem side, are provided, and the web is cut at the cutting position. A first cutter (33) and a centering sewing machine (22) are arranged behind a feed roller (17) that feeds the first cutter (33), and a second cutter (35) is arranged downstream of the first cutter (33),
A curtain length determining device, wherein a hem stitch sewing machine (36) is arranged further downstream. 2. A feed roller (1) for intermittently feeding a web (7) having a top and bottom pattern (6) having a repeat length (P) to a cutting position (24).
7), a computer (23) for controlling the feed roller (17), the computer (23) cuts the raw fabric by traversing the cutter provided at the cutting position (24), curtain fabric (25) The top
In the cutting positioner that positions the raw material (7) at the cutting position (24) so that the top and bottom pattern (6) comes at a fixed distance (U) from (26), the cutting position is at a distance (B) away from the cutting position. A TV camera (18) for recognizing the top and bottom pattern (6) is arranged, and the TV camera and the computer (23) are connected,
The computer (23) has storage means for storing a value (A) obtained by subtracting the constant distance (U) from the set length (W) of the curtain fabric (25), and a pattern repeat length. Calculating means for obtaining a length multiplied by a maximum multiple (n) not exceeding the storage value (A) when the integer (P) is multiplied by an integer.
After (18) recognizes the pattern (6), the feed roller (17) sends the raw material to the cutting position (24) by the length obtained by multiplying the repeat length (P) by the maximum multiple (n). A cutting positioning device, characterized in that a length (B) is added to or subtracted from a predetermined length (U) and the length is sent. 3. A feed roller (17) for intermittently feeding a web (7) having a top and bottom pattern (6) with a repeat length (P) from a hem side to a cutting position (24), and a set curtain fabric (25) Length (W)
And a computer (23) for controlling the feed roller (17) .The sensor (41) is disposed at a position spaced downstream from the cutting position (24) by a distance corresponding to
3) is the value (A) obtained by subtracting the distance (U) from the top (26) of the curtain fabric to the first vertical pattern (6) from the set curtain fabric length (W). Means for obtaining a length obtained by multiplying a minimum multiple value (m) exceeding the stored value by multiplying the repeat length (P) of the pattern by an integer, and obtaining a length from the sensor (41). When receiving a detection signal, the computer sends only the extra length (V), which is the length obtained by multiplying the repeat length (P) by the minimum multiple (m), minus the length of the curtain fabric (W). The cutting positioning device. 4. A raw cloth (7) having a top and bottom pattern (6) is supplied to an ear stitch sewing machine (11) from the top side, and both ears are sewn by the ear stitch sewing machine, and then are zigzag-shaped on a bogie. Fallen web (7)
Feeding the raw material to the length determining device (14), wherein the raw material on the trolley is supplied to the length determining device (14) from the hem side. 5. An original fabric (7) having a top and bottom pattern (6) is supplied to an ear stitch sewing machine (11) from the top side, and after both ears are sewn by the ear stitch sewing machine, a zigzag shape is formed on a bogie. The source rolled off
(7) is supplied to the length determining device (14) by feeding the raw material to the length determining device (14) with the back side of the raw material facing up, and a television camera (18) that recognizes the pattern (6) of the raw material. ) Is arranged on the back side of the web to be fed, wherein the web is fed to the length determining device.