JPH10201972A - Curtain fold removal sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain fold removing sewing device capable of transferring a formed curtain fold to a sewing position of a sewing machine at a stretch and shortening a cycle time related to curtain fold sewing to improve productivity. . SOLUTION: A guard air cylinder 146 is inclinedly attached to an attachment plate 147 attached to the left side surface of the lockstitch sewing machine 2, and the piston rod 1 of the air cylinder 146 is provided.
An upper end of a thin plate-like guard member 148 having a substantially inverted U-shape in side view is attached to the tip end of the guard member 146. When the guard member 148 is switched to the guard position shown by the solid line, the lower end of the guard member 148 Projecting lower than the lower end of the sewing needle 14 near the lower end of the sewing needle 14 at the needle upper position,
The curtain fold 6 which is turned upside down and is in the horizontal posture is
When it is transferred to the sewing position in synchronism with 58, the curtain fold 6 immediately to the left of the cloth holding plates 55 to 58 passes below the guard member 148, so that the curtain fold 6 is attached to the sewing needle 14. It can be smoothly and immediately transferred to the sewing position without being caught.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing apparatus for removing curtain folds, and more particularly to a curtain fold sewing apparatus in which a plurality of parallel cloth holding plates spaced at regular intervals approach a curtain cloth while maintaining the curtain cloth in a pressed state. And moving the curtain fold to a sewing position for sewing.

[0002]

2. Description of the Related Art Curtain crease removing machines in which curtain creases are sequentially formed at appropriate intervals on an upper end portion of various curtain fabrics including laces have been proposed and put to practical use. I have. For example,
No. 20715, Japanese Patent Publication No. 6-9638, Japanese Patent Application Laid-Open No. 7-275544, and Japanese Patent Publication No. 7-79887.
In the publication, basically, three ridge-forming spats provided horizontally or vertically are provided in parallel with each other at a predetermined interval, and two ridges that face the ridge-forming spatula are provided. After the folds of the curtain fabric are set so as to cover the three folds of the folds, the two folds of the folds are set between the folds of the folds. The curtain cloth is folded in a zigzag manner by these five spatulaes by pressing each of them to form a curtain fold consisting of three peaks, and the curtain fold is supplied to a sewing device. And a curtain fold forming apparatus have been proposed.

[0003] By the way, as the curtain folds formed on the curtain fabric, three peaks are usually formed in many cases, and the curtain folds are given a volume so that the curtains have a high-class feel. In this case, when the curtain fabric is stacked on six sheets and the curtain fold is moved to the lower sewing position of the sewing needle of the sewing device, the curtain fabric on the upper side of the curtain fold is caught on the tip of the sewing needle.
In the above-described curtain fold remover and curtain fold forming apparatus, the formed curtain fold is moved to the feed plate just before the sewing position and stopped, and while the curtain fold is pressed from above by the presser foot, the feed plate and the presser are pressed. By moving the curtain fold to the sewing position in cooperation with the foot, the curtain fold is prevented from being caught on the sewing needle. Also, when the sewn curtain folds are discharged, they are similarly moved to the outside of the sewing position while pressing the curtain folds with the presser foot so as not to be caught by the sewing needle.

On the other hand, with these curtain fold removing machines,
When multiple curtain folds are formed on the curtain fabric, the finished dimensions of the curtain at the time of order, the number of curtain folds, the pitch between folds, the number of folds on each curtain fold, the fold height, and the curtain fabric The curtain fabric is cut at a predetermined cutting width based on the dimensions such as the width of the end of the outer edge and the outermost curtain fold, and the cutting width or the entire width is input, and these dimensions are input and set. By doing so, it is possible to manufacture curtains of any size ordered.

For example, Japanese Patent Application Laid-Open No. H8-38767 discloses a curtain fold formation in which the dimensions required for manufacturing an ordered curtain are input and set from an operation panel connected to a control device of the curtain fold remover. A device has been proposed. Here, when curtain folds are sequentially formed on the curtain fabric based on the dimensions set by the curtain fold forming device, errors occur in the pitch between the folds of the curtain folds, the fold height, and the like. The degree of occurrence of the error varies depending on the type and thickness of the cloth.

Therefore, recently, when the remaining number of curtain folds to be formed becomes "3", the fold formation operation is temporarily stopped, the measure provided on the curtain fold removing machine is pulled out, and the tip of the measure is pulled out. By operating the button while matching the sewing end of the curtain cloth, the error between the calculated remaining width and the actual remaining width of the remaining three curtain folds is obtained, and the error is calculated by using the remaining three curtain folds. The height of the fold is newly requested to correct with
A curtain fold forming apparatus in which two curtain folds are formed at the corrected fold height has been put to practical use.

[0007]

As described above, in a curtain fold removing machine and a curtain fold forming apparatus described in Japanese Patent Publication No. 55-20715 and Japanese Patent Publication No. 6-9638, the formed curtain fold is sewn. When the device is moved to the sewing position, a two-stage configuration is used in which the movement is temporarily stopped before the sewing position, transferred to the presser foot, and then moved to the sewing position. However, there is a problem that the cycle time for sewing the curtain folds is prolonged and the productivity is reduced.

Further, while inputting and setting various dimensions relating to the sewing of the curtain fold, the remaining number of the curtain fold is "3".
In the curtain fold forming apparatus, the remaining length of the curtain cloth is determined by the measure when the number of the curtain folds becomes one, and the remaining error is corrected by the three curtain folds. It is unavoidable that a residual error will occur when the sewing is performed. In particular, the width dimension of the outer end curtain portion of the sewing start end side curtain fold and the outer end curtain of the sewing end end side curtain fold As a result, the width dimension of the portion is different, and there is a problem that the appearance is poor and the quality is reduced.

[0009] An object of the present invention is to improve productivity by shortening the cycle time for curtain fold sewing.
Moreover, it is an object of the present invention to provide a curtain fold removal sewing apparatus capable of sewing a high-quality curtain having a good appearance.

[0010]

According to a first aspect of the present invention, there is provided a curtain fold removing and sewing apparatus for forming curtain folds sequentially at a plurality of positions at appropriate intervals on one end of a curtain fabric in a horizontal position. A sewing machine for sewing the curtain folds supplied from the curtain folder, and a sewing machine for sewing the curtain folds.The curtain folder is a plurality of parallel cloth holding plates orthogonal to one end of the curtain fabric. It is provided with a plurality of cloth holding plates that can be moved to a separated position spaced at equal intervals and an approaching position approached at equal intervals, and the cloth holding plates are set to the separated positions and pressed against the curtain fabric, A curtain fold is formed by switching to the approach position while maintaining the pressed state, and the curtain fold is transferred to the sewing position of the sewing machine in a state where the curtain fold is turned 90 degrees. The sewing machine includes a feed plate for feeding the material to be sewn, a pressing member for pressing the material to be sewn on the feed plate, and a pressing member for pressing the curtain fold transferred from the curtain fold remover onto the feed plate with the pressing member. The sewing machine is provided with a plurality of relay needles which can be lifted and lowered, and switches the sewing machine between a guard position protruding below the lower end of the sewing needle near the lower end of the sewing needle at the needle upper position and a retracted position retracted upward from the guard position. A possible guard member is provided.

In a curtain fold remover, a plurality of parallel cloth holding plates orthogonal to one end of the curtain cloth are pressed to the curtain cloth after being separated from each other, and then switched to the approaching position while maintaining the pressed state. A curtain fold is formed, and the curtain fold is turned 90 degrees. At this time, in the sewing machine, the guard member is switched to the guard position, the curtain fold is transferred to the sewing position on the feed plate of the sewing machine, and is restrained by the lowering of the plurality of relay needles. At this time, since the guard member projects lower than the lower end of the sewing needle near the lower end of the sewing needle at the needle position, the transferred curtain fold passes under the guard member, so that the curtain fold is caught by the sewing needle. Can be smoothly transferred to the sewing position. That is, since the formed curtain folds can be transferred at a stroke to the sewing position, the productivity can be improved by shortening the cycle time related to curtain fold sewing.

The sewing machine for removing curtain folds according to claim 2 is
According to the first aspect of the present invention, an actuator for driving the guard member up and down over a guard position and a retreat position is provided. In this case, the guard member can be easily moved up and down over the guard position and the retracted position by driving the actuator at the timing of transferring the curtain fold in synchronization with the curtain fold remover. In addition, the same operation as the first aspect is achieved.

According to a third aspect of the present invention, there is provided a sewing machine for removing curtain folds.
The invention according to claim 1, further comprising a cloth end detector integrally connected to a cloth holding plate farthest from the sewing machine among the plurality of cloth holding plates, and detecting an end of the curtain cloth at the time of forming a final curtain fold. It is a thing. In this case, when forming the final curtain fold, a plurality of cloth holding plates are used until the end of the curtain cloth is detected by the cloth end detector integrally connected to the cloth holding plate farthest from the sewing machine among the plurality of cloth holding plates. Is continuously separated to the separated position. Then, based on the distance from the position of the cloth edge detector to the cloth holding plate to which it is attached when the end of the curtain cloth is detected, the plurality of cloth holding plates are further moved and adjusted to the separated position or the approach position. By doing so, at the end of the curtain fabric, the end curtain part of the same size as the end curtain part provided at the start end part can be securely provided to form the final curtain fold, and high quality with good appearance Curtains can be sewn.
In addition, the same operation as the first aspect is achieved.

According to a fourth aspect of the present invention, there is provided a sewing machine for removing curtain folds.
4. An apparatus according to claim 3, further comprising an actuator for driving said plurality of cloth holding plates over a separation position and an approaching position, and control means for controlling said actuator, wherein said cloth edge detector is used when a final curtain fold is formed. The actuator is controlled by the control means so that the dimension from the final curtain fold to the end of the curtain cloth becomes the set dimension by using the cloth edge position detected in (1).
In this case, the plurality of cloth holding plates can be accurately driven over the separated position and the approach position by the actuator controlled by the control means, and the cloth end position can be detected by the cloth end detector and the final curtain can be controlled. The dimension from the fold to the end of the curtain fabric can be set with high accuracy. In addition, the same operation as the third aspect is achieved.

According to a fifth aspect of the present invention, there is provided a sewing machine for removing curtain folds.
In the invention according to any one of claims 1 to 4, each of the cloth holding plates has an upper holding plate and a lower holding plate capable of holding the curtain cloth when the cloth holding plate can be opened and closed vertically and can be opened and closed in a closed position. Things. In this case, each of the cloth holding plates has an upper holding plate and a lower holding plate that can face the fabric up and down and can be opened and closed up and down and can hold the curtain fabric when in the closed position. When the shutter cloth is in the closed position, the curtain cloth can be reliably pressed and clamped, and the formation of curtain folds can be simplified and ensured regardless of the type of curtain cloth.

The sewing machine for removing curtain folds according to claim 6 is
A curtain fold remover for sequentially forming curtain folds at a plurality of places at appropriate intervals at one end of the curtain fabric in a horizontal position, and a sewing machine for sewing the curtain folds supplied from the curtain fold remover. In the curtain fold removing and sewing apparatus provided, the curtain fold remover includes a plurality of parallel cloth holding plates orthogonal to one end of the curtain fabric, and a separation position at an equal interval and an approach position at an equal interval. With a plurality of cloth holding plates that can be moved to, the cloth holding plate is pressed to the curtain fabric in the separated position,
By switching to the approach position while maintaining the pressed state, a curtain fold is formed, and the curtain fold is configured to be transferred to a sewing position of a sewing machine in a state where the curtain fold is inverted by 90 degrees. Among them, a cloth end detector is provided which is integrally connected to a cloth holding plate farthest from the sewing machine and detects the end of the curtain cloth when forming a final curtain fold.

In the formation of the final curtain fold, a plurality of cloth holding plates are connected until the end of the curtain cloth is detected by the cloth end detector integrally connected to the cloth holding plate farthest from the sewing machine. Is continuously separated to the separated position. Then, based on the distance from the position of the cloth edge detector to the cloth holding plate to which it is attached when the end of the curtain cloth is detected, the plurality of cloth holding plates are further moved and adjusted to the separated position or the approach position. By doing so, at the end of the curtain fabric, the end curtain part of the same size as the end curtain part provided at the start end part can be securely provided to form the final curtain fold, and high quality with good appearance Curtains can be sewn.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a curtain fold remover 3 that sequentially forms three ridges of curtain folds at predetermined intervals at an upper end portion of a curtain fabric, and a curtain fold supplied from the curtain fold remover 3 are sequentially arranged. This is a case where the present invention is applied to a curtain fold removing sewing apparatus 1 provided with a lockstitch sewing machine (corresponding to a sewing machine) 2 for sewing. First, the lockstitch sewing machine 2 will be described. As shown in FIGS. 1 and 2 and FIGS. 8 and 9, a lockstitch sewing machine 2 is provided on a movable support table 10. The lockstitch machine 2 includes a bed 11 provided with a rotary hook and a lower shaft (not shown), a pillar 12 erected from the bed 11, and an arm 13 extending forward from the pillar 12. It is composed of

In the arm portion 13, a needle bar vertical movement mechanism for vertically moving a needle bar having a sewing needle 14 attached to a lower end thereof via an upper shaft driven by a sewing machine motor (not shown) and a balance for vertically moving the balance. A balance vertical movement mechanism and the like are provided. Further, a plurality of relay needles 16 attached to a needle support 15 (see FIG. 3) are supported on the head of the arm portion 13 in proximity to the sewing needle 14 so as to be able to move up and down. The needle air cylinder 17 that is driven up and down at the timing described above is fixed downward.

On the other hand, the bed 11 is provided with the curtain cloth 5.
A presser foot drive mechanism 19 is provided for switching and driving a presser foot (corresponding to a presser member) 18 pressing the curtain fold 6 formed at the position between the press position and the retracted position above the press position. Further, in order to sew the curtain folds 6, an X-direction feed plate 20 for moving in the X direction (left-right direction) and a Y-direction feed plate (not shown) for moving in the Y direction (front-rear direction) are provided. The directional feed plate 20 and the Y-direction feed plate are independently driven by a feed drive mechanism (not shown) based on the sewing data. Furthermore, on the bed part 11, FIG.
As shown in FIG. 8 and FIG.
A bent discharge plate 21 is provided to push the discharge plate 21 to the front end of the bed 11 and discharge the same, and a discharge air cylinder 22 is provided to push the discharge plate 21 forward to drive.

Next, a curtain fold removing machine 3 for sequentially forming curtain folds 6 at a plurality of locations at predetermined intervals on the upper end portion of the curtain cloth 5 will be described with reference to FIGS.
8 will be described. The curtain fold removing machine 3 includes a curtain fold forming mechanism 25 that forms the curtain folds 6 on the curtain fabric 5 sequentially in a vertical posture by moving the plurality of cloth holding plates 55 to 58 at equal intervals, and a curtain fold forming mechanism. 2
Rotating mechanism 6 for erecting and rotating 5 from a horizontal state to a vertical state
5, the curtain fold forming mechanism 25 and the rotating mechanism 65
And a left-right moving mechanism 90 for moving the curtain fold forming mechanism 25, the rotating mechanism 65, and the front-rear moving mechanism 75 in the left-right direction. I have.

First, the curtain fold forming mechanism 25 will be described. A substantially rectangular substrate 26 in plan view is horizontally disposed in the front-rear direction, and the vertical wall portions 26a, A pair of guide shafts 27 are provided on the left and right sides in parallel and horizontally in the front-rear direction over 26b,
The guide shaft 27 has four support blocks 26b and 28 to 30 with the vertical wall 26b as a support block.
Except for the support block 26b, each is supported so as to be able to move back and forth. Each of the support blocks 28 to 30 is formed by integrally connecting a pair of blocks 28a, 29a, 30a externally fitted to the guide shaft 27 by connecting plates 28b, 29b, 30b. Each of the support blocks 26b and 28 to 30 can move back and forth in conjunction with each other by pivotally connecting the link mechanism 31 in which the four link plates 32 to 35 are sequentially connected to the connection plates 28b, 29b and 30b. Is configured.

That is, the rear end of the link plate 32 is pivotally attached to the motor mounting plate 36 attached to the support block 26b, the center of the link plate 33 is pivotally attached to the support block 28, and the link plate 34 is attached to the support block 29b. And the front end of the link plate 35 to the support block 30. A driving pulley 38 fixed to a motor shaft of a fold forming driving motor 37 mounted on a motor mounting plate 36, and a driven pulley rotatably supported by a support bracket 39 mounted on a front end of the substrate 26. A timing belt 41 is stretched over the support block 40, and the timing belt 41 is fixed to the support block pair 30 by a fixing bracket 42.

When the fold forming drive motor 37 is driven to rotate, the support block 30 moves forward or backward via the pulleys 38 and 40 and the timing belt 41, and at the same time, the support block 30 moves via the link mechanism 31. Support block 28,
28 also moves forward or backward simultaneously in synchronization. The base end of a vertical reference upper holding plate 45 is attached to the support block 26b, and the base end of a similar upper holding plate 46 is attached to the support block 28. A base end of a similar upper holding plate 47 is attached to 29, and a base end of a similar upper holding plate 48 is attached to the support block 30.

That is, each of the support blocks 28 to 30 is simultaneously moved forward or backward through the link mechanism 31 in synchronization with each other, so that the horizontal position of the reference upper holding plate 45 closest to the lockstitch sewing machine 2 can be adjusted. In the fixed state, the other upper holding plates 46 to 48 are separated while moving forward at regular intervals, while approaching while moving backward at regular intervals. By the way, as shown in FIG.
b, 28 to 30, a downwardly opening / closing air cylinder 61 is fixed via a mounting member 60, respectively, and at the lower end of the piston rod of the opening / closing air cylinder 61,
The base ends of the vertical lower holding plates 51 to 53 are respectively attached to the left direction, and the same reference lower holding plate 50 is attached to the lower end of the piston rod of the opening / closing air cylinder 61 which is attached downward to the support block 26b. Is mounted at the base end.

At this time, the lower holding plates 50 to 53 and the upper holding plates 45 to 48 are vertically opposed to each other, and the lower end surfaces of the upper holding plates 45 to 48 and the lower holding plates 50 to 53 When the opening / closing air cylinder 61 is driven forward, the lower holding plates 50 to 53 are connected to the upper holding plates 4.
The curtain cloth 5 is set between the upper holding plates 45 to 48 and the lower holding plates 50 to 53, and the opening / closing air cylinders 61 are retracted. When driven in, each lower holding plate 50-
53 is driven upward with respect to each of the upper holding plates 45 to 48, that is, is closed, and the fold formation portion of the curtain fabric 5 is vertically moved by the upper holding plates 45 to 48 and the lower holding plates 50 to 53 facing each other. From the same time. Here, the upper holding plates 45 to 48 and the lower holding plates 50 to 53 facing each other constitute cloth holding plates 55 to 58.

As shown in FIG. 7A, when the curtain cloth 5 is maintained in a pressed state by the cloth holding plates 55 to 58, the fold forming drive motor 37 is driven in a predetermined rotation direction. In this case, as described above, the support blocks 28 to 30 move rearward in synchronization with each other,
When each of the cloth holding plates 56 to 58 moves rearward at equal intervals, a curtain fold 6 having three folds having the same height is provided on the curtain fabric portion located between the cloth holding plates 55 to 58. It is formed in an upward vertical posture.
By the way, as shown in FIG. 7 (b), only the foremost opening / closing air cylinder 61 is not driven, and only the foremost lower holding plate 53 is lowered, so that the curtain composed of two folds is formed. The fold 6A can be formed.

Here, the origin position sensor 62 for detecting the position of each of the support blocks 26b and 28 to 30 when the curtain fold 6 is formed, that is, the origin position of the support block 30.
(See FIG. 5) is provided on the substrate 26. By the way, as shown in FIG. 7A, the lower end portions of the upper holding plates 45 to 48 are tapered so that the plate thickness becomes smaller toward the lower end side. This makes it easy for the curtain fabric portion to bend upwards, so that the formation of upward curtain folds can be ensured.

Next, a description will be given of a rotating mechanism 65 that raises the curtain fold forming mechanism 25 by rotating it 90 ° from a horizontal state. As shown in FIGS. 1, 2, and 10 to 13, a support member 66 is fixed to the back end of the substrate 26 in the front-rear direction, and the front end of the support member 66 is connected to a horizontal support plate 79 described later. Is rotatably supported by a support member 73 attached to the rear end of the support member 66 via a pivot pin 67 oriented in the left-right direction.
8 is fixed at the upper end. Further, the lower end of the pivoting lever 68 is connected to the distal end of a piston rod of a pivoting air cylinder 69 disposed rearward through a coupling 70, and the rear end of the pivoting air cylinder 69 Is connected to the front end of the support plate 79 via a pivot bracket 71.

That is, when the curtain fold forming mechanism 25 is in a horizontal state so that the curtain fold 6 can be formed, the rotating air cylinder 69 is driven to advance. Then, when the posture of the curtain fold 6 formed in the vertical posture is changed to the horizontal posture, the lower end portion of the rotation lever 68 is pulled forward through the piston rod by the retreat driving of the rotation air cylinder 69. Curtain fold formation mechanism 2
The pivot 5 rotates about the pivot pin 67 via the pivot lever 68 and the support member 66 and pivots 90 ° clockwise as shown in FIG. On the other hand, when the rotation air cylinder 69 is driven to advance, it returns to the original horizontal fold forming position shown in FIG. Here, the absorber 72 attached to the support plate 79 absorbs the impact when the curtain fold forming mechanism 25 returns to the rotation, and is positioned at the horizontal fold forming position.

Next, a forward / backward moving mechanism 75 for moving the curtain fold forming mechanism 25 and the rotating mechanism 65 in the forward / backward direction will be described with reference to FIGS. As shown in FIG. 11, after moving the curtain fold forming mechanism 25 backward from the fold forming position indicated by the solid line to the sewing position indicated by the two-dot chain line, the front-rear moving mechanism 75 transfers the curtain fold forming mechanism 25 to the relay needle 16.
It is retracted to the original fold formation position. A pair of guide shafts 77 are vertically arranged in parallel in the front-rear direction and horizontally across vertical wall portions 76a and 76b attached to the front and rear end portions of a rectangular front-rear movement base plate 76 long in the front-rear direction. A support block 78 is supported by these guide shafts 77 so as to be able to move back and forth. This support block 78
In this embodiment, a pair of blocks 78a externally fitted to the guide shaft 77 are integrally connected by a connecting plate 78b.

Further, a horizontal support plate 79 is attached to the upper end of the support block 78. The drive pulley 81 fixed to the motor shaft of the front / rear drive motor 80 attached to the rear end of the front / rear movement base plate 76 and the support bracket 82 attached to the front end of the front / rear movement base plate 76. A timing belt 83 is stretched over a driven pulley rotatably supported, and the timing belt 83 is fixed to a support block 78 by a fixing bracket 84. Here, the origin position sensor 85 for detecting the origin position in the front-back direction of the curtain fold forming mechanism 25 when forming the curtain fold 6 is provided by the vertical wall portions 76a and 76.
It is provided on the side plate 86 provided over the area b.

When the front / rear drive motor 80 is rotationally driven, the support block 78 moves forward or backward via the timing belt 83, and at the same time, the support plate 79 moves in the front / rear direction. The curtain fold forming mechanism 25 provided above is moved in the front-rear direction. Next, a left-right moving mechanism 90 for moving the curtain fold forming mechanism 25 and the front-rear moving mechanism 75 in the left-right direction will be described with reference to FIG.
This will be described with reference to FIG.

The left-right moving mechanism 90 transfers the curtain fold forming mechanism 25 to the relay needle 16 after forming the curtain fold 6 as shown by a solid line in FIG. Is retracted to the retreat position shown by the two-dot chain line in order to retreat to the right, and is moved in the left-right direction in synchronization with the sewing of the curtain fold 6. A pair of guide shafts 92 are parallel in the left and right direction in the front and rear direction over vertical wall portions 91a and 91b respectively attached to left and right end portions of a rectangular left and right movement base plate 91 provided on the support table 10. The guide shaft 92 is horizontally disposed, and two support blocks 93 and 94 are supported on the guide shaft 92 so as to be movable left and right.

The support block 93 is formed by integrally connecting a pair of blocks 93a externally fitted to the guide shaft 92 by a connection plate 93b. Fixed. The support block 94 includes a pair of blocks 94 that are fitted around the guide shaft 92.
a are integrally connected by a connection plate 94b.
The drive pulley 96 fixed to the motor shaft of the left and right drive motor 95 attached to the right end of the left and right base plate 91 and the support bracket 97 attached to the left end of the left and right base plate 91 rotate. A timing belt 99 is stretched over a driven pulley 98 pivotably supported, and the timing belt 99 is fixed to a support block 94 by a fixing bracket 100.

By the way, as shown in FIGS.
The distal end of the piston rod of the evacuation air cylinder 102 disposed in the left-right direction is connected to a mounting plate 101 extending downward from the left end of the connecting plate 94b of the support block 94 via a floating joint 105. The base end of the evacuation air cylinder 102 is connected to a support plate 103 attached to a connecting plate 93b of the support block 93.
Is connected to the right end. Here, an origin position sensor 104 for detecting the origin position of the support block 94 in the left-right direction when forming the curtain fold 6 is provided on the base plate 91 for left-right movement. As a result, when the left and right drive motor 95 is driven to rotate, the support block 94 is moved to the left or right via the pulleys 96 and 98 and the timing belt 99, and is moved via the evacuation air cylinder 102. Since the support block 93 is also moved to the left or right at the same time, the curtain fold forming mechanism 25 and the front and rear moving mechanism 75 are simultaneously moved in the left and right direction.

Here, a brief description will be given of the left-right movement control for moving the left-right movement mechanism 90 in the left-right direction in synchronization with the sewing of the curtain fold 6, as shown in FIGS. 1, 8, and 10. A connecting rod 110 connected to 94 extends rearward, and an elongated light-shielding plate 111 is attached upward to a distal end of the connecting rod 110. On the other hand, a pair of optical X
The direction detection sensor 112 is provided adjacent to the left and right so that the detection light is shielded by the light shielding plate 111. When the X-direction feed plate 20 moves in the left-right direction during sewing of the curtain fold 6, the left-right drive motor 95 is rotated forward so that the pair of X-direction detection sensors 112 is always shielded from light by the light-shielding plate 111. By driving or reverse driving,
The curtain fabric 5 and the curtain fold remover 3 can be moved in the left-right direction in synchronization with each other.

Next, a description will be given of the work table 115 which is moved in the left and right direction in synchronization with the curtain fold forming mechanism 25 via the support block 94 and which can move up and down and forward and backward with respect to the curtain fold forming mechanism 25. . FIG.
As shown in FIGS. 9, 12, 17 and 18, a fixing plate 116 is horizontally mounted on the support block 94, and the fixing plate 116 has a pair of support members 117 before and after extending leftward. The support member 117 has four bases 118 erected at the left end of the support member 117.
8, a lower plate 119 is mounted horizontally.
9, a table air cylinder 120 for vertically moving the work table 115 is fixed upward, and the end of a piston rod of the table air cylinder 120 is attached to the middle plate 1
21 is fixed horizontally. Here, work table 1
The pair of guide units 122 attached to the lower plate 119 are mounted on the middle plate 121 so as to be able to move up and down horizontally.
Guide pins 123 which extend downward from the bottom are respectively fitted to be vertically movable.

Further, a pair of rail members 126 oriented in the front-rear direction is attached to the middle plate 121, and a slider 124 fixed to an upper plate 125 attached to the lower surface of the work table 115 moves back and forth to these rail members 126. Engage as possible. Then, the work table 115 is set to 2
The first air cylinder 129 is supported by a support fitting 127 fixed to the middle plate 121 to move back and forth in stages.
The piston rod 129a of the first air cylinder 129
The second air cylinder 131 is supported by a support fitting 130 attached to the end of the second air cylinder 131, and the end of the piston rod 131 a of the second air cylinder 131 is connected to a vertical wall 132 fixed to the upper plate 125.

When the table air cylinder 120 is driven forward, the middle plate 121 rises, so that the work table 115 rises to a predetermined height position via the slide mechanism by the slider 124 and the rail member 126 and the upper plate 125. And air cylinder for table 1
The work table 115 is moved down for evacuation by the retraction drive 20. On the other hand, when the second air cylinder 131 is driven to retreat, the work table 115 moves forward to the position indicated by the two-dot chain line 115A in FIG.
When the air cylinder 129 is driven to retract, the work table 115 further moves forward to a position indicated by a two-dot chain line 115B.

By the way, as shown in FIGS. 4 and 17, the fold forming portion 115 formed by cutting the work table 115 is formed.
a, two left and right support pipes 133 for supporting the supplied curtain fabric 5 from below are provided in the same front-rear direction as the moving direction of the cloth holding plates 55 to 58, and the front ends thereof are respectively provided. It is fixed to the work table 115. These support pipes 133 do not interfere with the formation of folds by fitting into the notches 54 formed so as to correspond to the upper ends of the lower holding plates 50 to 53, respectively. I have. Further, a plurality of minute air blowing holes 133a are formed in a straight line on the upper surface of the support pipe 133, and as shown in FIG. Pressurized air supplied from the air outlet 133a blows upward from the air outlet holes 133a and pushes up the curtain fabric 5 from below, so that the curtain fold 6
Can be formed on the upper side as much as possible.

Here, as described above, when the curtain fold forming mechanism 25 is turned upright by 90 °, the first and second air cylinders 12 are set in accordance with the formation position of the curtain fold 6.
By moving the work table 115 forward in two steps by selectively or in combination driving the working members 131, the support pipes 133 obstructing the rotation can be reliably retreated forward simultaneously, and furthermore, the retreat is performed. Sometimes, the curtain fabric 5 connected to the curtain fold 6 does not loosen downward.

Next, a clamp mechanism 135 for clamping the curtain cloth 5 when sewing the curtain folds 6 will be described with reference to FIGS. On the rear end of the support block 94, a left and right air cylinder 136 for moving both upper and lower clamps 142 and 143 described later in the left and right direction is attached to the left direction, and the tip of the piston rod of the left and right air cylinder 136. Is connected to a slide plate 137 slidably supported by the support block 94 in the left-right direction. The support plate 138 connected to the slide plate 137 is used to move the upper and lower clamps 142 and 143 in the vertical direction. 139 are mounted upward.

An air cylinder 141 for clamping is vertically fixed to an upper end of a connecting plate 140 connected to a tip end of a piston rod 139a of the air cylinder 139 for up and down. The clamping air cylinder 141 is a double-acting type, and is capable of simultaneously driving the upper and lower piston rods 141a and 141b to advance and retract. The upper clamp 142 is fixed to the upper piston rod 141a, and the lower clamp 143 is fixed to the lower piston rod 141b. When the clamping air cylinder 141 is driven in and out, the curtain cloth 5 is clamped by the upper and lower clamps 142 and 143. On the other hand, when the clamping air cylinder 141 is driven in and out, the clamping operation is released.

On the other hand, when the upper and lower air cylinders 139 are driven to retreat, the upper and lower clamps 142 and 143 are lowered, so that the cloth holding plates 55 to 58 become obstructive when moving toward the relay needle 16. The upper and lower clamps 142 and 143 can be retracted rightward via the slide plate 137 by the retraction drive of the left and right air cylinders 136. Next, the formed curtain fold 6 is attached to the sewing needle 1.
4 when transferring to the lower sewing position.
The guard mechanism 145 that guards the needle 14 so that it does not catch on the tip of the sewing needle 14 will be described with reference to FIGS. 3 and 19 to 20.

On the left side of the lockstitch sewing machine 2, a guard air cylinder (corresponding to an actuator for driving up and down) 146 is arranged in an obliquely inclined shape from the upper left to the lower right. Mounting plate 14 mounted
7 supported. The guard air cylinder 146
The upper end of a thin plate-like guard member 148 having a substantially inverted U-shape in side view is attached to the distal end of the piston rod 146a. When the guard air cylinder 146 is driven to advance, the guard member 148 is switched to the guard position shown by a solid line in FIG. 19, while when the guard air cylinder 146 is driven to retract, the guard member 148 is indicated by a two-dot chain line. As shown, the guard position is switched to a retracted position retracted diagonally upward.

Here, when the guard member 148 is switched to the guard position, the lower end portion of the sewing needle 14 and the presser foot 1
8 corresponds to the notch 148a formed in the guard member 148, so that interference between the guard member 148 and the notch 148a is avoided, and the lower end of the guard member 148 has the lower end of the sewing needle 14 positioned above the needle. Protruding lower than the lower end of the sewing needle 14 near the lower end of the sewing needle 14. That is, as shown in FIG. 19, when the curtain fold 6 formed and turned 90 ° and transferred in the horizontal position in synchronization with the cloth holding plates 55 to 58 to the sewing position, the guard member 148 is switched to the guard position. Since the curtain folds 6 on the left side of the left ends of the cloth holding plates 55 to 58 pass below the guard member 148, the curtain folds 6 are smoothly transferred to the sewing position without being caught by the sewing needle 14. be able to.

Next, an end detecting mechanism 15 for detecting the end of the curtain cloth 5 when the final curtain fold 6 is formed.
0 will be described with reference to FIGS. The right end of a sensor support plate 152 parallel to the upper support plate 48 is fixed to a mounting plate 151 for mounting the base end of the foremost upper support plate 48 to the support block 30.
, Two rotary air cylinders 153 and 154 are attached to the lower end portion, respectively. A base end of an upper lever 155 having a substantially L shape in a front view is fixed to an output shaft of the upper rotation air cylinder 153.
A cloth end detection sensor (corresponding to a cloth end detector) 157 composed of a light receiving element is attached to the distal end of the base, and the output shaft of the lower rotation air cylinder 154 has a base end of a linear lower lever 156. Is fixed, and a light projecting element 158 is attached to the tip of the lower lever 156.

The upper lever 155 and the lower lever 156 are normally switched to the retracted positions indicated by two-dot chain lines, respectively. By driving the 154, the upper lever 155 and the lower lever 156 are respectively switched to the detection positions indicated by solid lines, and the light projected from the light projecting element 158 is detected by the cloth edge detection sensor 157 when the curtain cloth 5 is lost. By receiving light, the curtain cloth 5
Can be accurately detected.

Next, the control system of the curtain fold removing and sewing apparatus 1 will be described with reference to the block diagram of FIG.
Control unit 160 for controlling curtain fold remover 3
Is an operation panel 165 provided with a keyboard or display having numeric keys, a fold forming drive motor 37, a front and rear drive motor 80, a left and right drive motor 95, a discharge air cylinder 22, an open / close air cylinder 61, and a rotation air. .., The origin sensors 62, 85, 104 and the X-direction detection sensor 112, the lockstitch sewing machine 2, and a personal computer 166 which is an external device.

The control unit 160 includes a CPU 161.
And a stitch data supplied to the lockstitch sewing machine 2 and a ROM 16 storing a control program of curtain fold formation control for controlling the curtain fold removal machine 3 to form the curtain fold 6.
2 and a RAM 163 having various memories. Next, the routine of the curtain fold sewing control will be described with reference to FIGS.
This will be described with reference to the flowchart of FIG.

When the power is turned on to the curtain fold removing and sewing apparatus 1, this control is started, and an initial setting process is first executed (S10). That is, as shown in FIG. 28 (a), when setting the curtain cloth 5, the opening / closing air cylinder 61 and the table air cylinder 120 are driven respectively, and the lower holding plates 50 to 53, the work table 115 and Is lowered. Further, the curtain fold forming mechanism 25 drives the front and rear drive motor 80 and the left and right drive motor 95
It is located at the fold formation position, which is the origin position in the front-rear direction and the left-right direction.

Next, in this initial state, the sewing start side of the upper end portion of the curtain fabric 5 is placed on the work table 115 (S11), and by operating a foot switch (not shown), the number of folds HN and the like are obtained. Various sewing data, such as a fold size, a width size and a finished size of the curtain cloth 5, are read from the personal computer 166 (S12). Next, when the sewing start switch of the operation panel 165 is operated (S13: Yes), the curtain fold forming mechanism 25 is operated.
Is moved to a predetermined curtain fold formation position (S14), the number of folds HN is decremented by one (S15), and curtain fold formation processing (see FIG. 25) is executed (S16).

When this control is started, the number of folds HN
Is not “0” and the final curtain folds are not formed (S40: No), the cloth holding plates 55 to 58 are equally spaced apart in the front-rear direction so as to be the height of the folds of the curtain folds 6 ( 28A), the lower holding plates 50 to 53 and the work table 115 are raised, so that the curtain cloth 5 is simultaneously pressed and held by the cloth holding plates 55 to 58, and at this time, the air blows from the support pipe 133. Pressurized air blown out from the holes 133a is supplied from below the curtain fabric 5 (S41, see FIG. 28B).

Next, with the horizontal position of the reference cloth holding plate 55 fixed by the drive of the fold forming drive motor 37, the other cloth holding plates 56 to 58 approach the rear while moving backward at equal intervals. And the cloth holding plates 55 to 58
As a result, an upward curtain fold 6 consisting of three folds is formed (S42, see FIG. 28 (c)), this control is terminated, and the routine returns to the main routine. And the first
One or two of the second air cylinders 129 and 131 are driven, and the work table 115 is retracted forward until the support pipe 133 is securely separated from the cloth holding plates 55 to 58 forward (S17).

Next, the curtain fold forming mechanism 25 is turned 90 ° by the drive of the rotating air cylinder 69 until the curtain fold forming mechanism 25 stands up, and the posture of the curtain fold 6 is changed to a horizontal posture (S18). Here, at the time of the first fold formation (S19:
Yes), the guard member 148 is switched to the guard position (S21), and then the curtain fold forming mechanism 25 is advanced to a predetermined sewing position by driving the front / rear drive motor 80 (S22, see FIG. 29A). Here, the cloth holding plate 55
As described above, when the curtain folds 6 sandwiched between the ヒ -58 move to the lower side of the relay needle 16,
Curtain folds 6 on the left side of the left end of this guard member 1
48, the curtain folds 6 are
4 can be smoothly and immediately transferred to the sewing position without being caught on the sewing machine.

Next, the guard member 148 is switched to the retracted position and driven (S23), and the relay needle 16 descends and passes through the notches formed in the upper holding plates 45 to 48 to remove the entire curtain folds 6. Stab downward (S24, see FIG. 29 (b)). Then, in this state, only the lower holding plates 50 to 53 respectively descend as shown by the two-dot chain lines. That is, the upper holding plates 45 to 48 are moved backward by moving the entire curtain fold forming mechanism 25 backward by a predetermined amount, leaving the curtain folds 6 (S25, see FIG. 29C). .

Next, the presser foot 18 descends and the curtain fold 6 is pressed and held (S26), and the air cylinder 1 for clamping is pressed.
By driving the 41, the curtain cloth portion near the sewing position is clamped by the upper and lower clamps 142 and 143, and the relay needle 16 is raised (S27, see FIG. 30A). Then, it is instructed to sew the curtain fold 6 (S28), and during the sewing, the curtain fold formation mechanism 25 temporarily moves to the right retreat position and then moves to the original curtain fold formation position and reverses by 90 °. To return to the curtain fold formation state (S29). Then, S15 and the subsequent steps are repeatedly executed.

That is, in this sewing, the sewing needle 14 is driven up and down, and the X-direction feed plate 20 and the Y-direction feed plate are respectively driven to be driven based on the sewing data, as shown in FIG. First, a straight stitch 170 for sewing the base end of the curtain fold 6 in the X direction is formed from the left end to the right, and thereafter, a bar stitch seam 171 is formed. Here, when the straight seam 170 is formed, the X-direction detection sensor 1
The left and right drive motors 95 are driven based on the detection signal from 12, and the curtain fold forming mechanism 25 is moved in the left and right direction in synchronization with the movement of the curtain fold 6 in the X direction.

When forming the second and subsequent folds (S19: No), a fold discharge process (see FIG. 27) is executed (S20). When this control is started and the sewing is completed (S60: Yes), the presser foot 18 is raised (S60).
61, see FIG. 30 (b)), the guard member 148 is switched to the guard position (S62), and thereafter the discharge air cylinder 22 is driven to move the discharge plate 21 forward,
The curtain fold 6 is discharged below the front end of the bed 11 (S63, see FIG. 30 (c)). At this time, similarly, the curtain fold 6 can be smoothly discharged without being caught on the sewing needle 14. Next, the guard member 14
8 is switched to the original retreat position (S64), and when the discharged curtain fold 6 is not the final one (S65: N).
o), return.

In the curtain fold forming process control, when the final curtain fold 6 is formed (S40: Yes), the end curtain portion dimension setting process control (see FIG. 26) is executed (S43). When this control is started, the cloth end detection sensor 157 is switched to a horizontal detectable state by driving the air cylinders 153 and 154 (S50), and every time the fold forming drive motor 37 is driven by a predetermined minute amount. That is, each time each of the cloth holding plates 55 to 58 moves in the direction in which they are separated (S51), it is determined whether or not the cloth end of the curtain cloth 5 is detected (S52: No), and the cloth end is detected. When this is done (S52: Yes, see FIG. 31A), the fold forming drive motor 37 is driven so that the width of the end curtain 5a (see FIG. 33) becomes the set value (S53).

That is, when the width of the end curtain 5a is smaller than the set distance between the cloth edge detection sensor 157 and the cloth holding plate 58, as shown in FIG. When the width of the end curtain 5a is larger than the set distance, the cloth holding plates 55 to 55 are driven as shown in FIG. The fold forming drive motor 37 is driven so that the interval of 58 is reduced. Then, the cloth edge detection sensor 157 is finally switched to the vertical retreat position (S54), and this control ends and the routine returns. When the sewing of the plurality of curtain folds 6 is completed, the plurality of curtain folds 6 are formed at predetermined intervals on the upper end portion of the curtain cloth 5 as shown in FIG.

As described above, the curtain fold remover 3 sequentially forms the curtain folds 6 at a plurality of places at appropriate intervals on one end of the curtain cloth 5 in the horizontal posture.
In the curtain fold removing and sewing apparatus 1 including the lock stitch sewing machine 2 for performing sewing on the curtain fold 6 supplied from the curtain fold remover 3, the curtain fold remover 3 includes a plurality of cloth holding plates 55 to 58. , Those cloth holding plates 55-
The curtain fold 6 is formed by pressing the curtain fabric 5 at the separation position 58 and then switching to the approaching position while maintaining the pressed state.
The lockstitch sewing machine 2 is configured to be transported to the sewing position of the lockstitch sewing machine 2 in a state where the lockstitch is reversed by 0 degree. The lockstitch sewing machine 2 includes a feed plate 20, a presser foot 18, and a relay needle 16. The curtain folds 6 formed
Can be transferred at a stroke to the sewing position, thereby improving the productivity by shortening the cycle time for curtain fold sewing.

A cloth end detecting sensor integrally connected to the cloth holding plate 58 farthest from the lockstitch sewing machine 2 among the cloth holding plates 55 to 58 to detect the end of the curtain cloth 5 at the time of final curtain fold formation. Since the end of the curtain cloth 5 is detected by the cloth edge detection sensor 157, the cloth holding plate 58 is provided from the position of the cloth edge detection sensor 157.
The end curtain 5a having the same size as the end curtain 5a provided at the start end is securely provided at the end of the curtain cloth 5 based on the set distance to the final curtain fold 6
Can be formed, and a good-looking high-quality curtain can be sewn.

Further, the cloth holding plates 55 to 58 are driven by the fold forming drive motor 37 over the separation position and the approach position, and the cloth end position detected by the cloth end detection sensor 157 is used. Since the drive motor 37 for forming the folds is controlled so that the dimension of the end curtain portion 5a from the final curtain fold 6 to the end of the curtain fabric 5 becomes the set size, the cloth holding plates 55 to 58 are separated. The position and the approach position can be driven with high accuracy, and the detection of the cloth edge position by the cloth edge detection sensor 157 and the dimension setting of the end curtain portion 5a can be performed with high accuracy.

Further, a plurality of cloth holding plates are provided in a horizontal and parallel manner, and a curtain fold removing machine in which curtain folds in a horizontal position are formed by the cloth holding plates on a vertically supplied curtain fabric. The present invention may be applied to a curtain fold removing sewing machine provided with various curtain fold removing machines having the cloth holding plate.

[0067]

According to the curtain fold removing and sewing apparatus of the first aspect, a curtain fold remover for sequentially forming curtain folds at a plurality of locations at appropriate intervals on one end portion of a curtain fabric in a horizontal posture is provided. In a curtain fold removing and sewing apparatus including a sewing machine that performs sewing on a curtain fold supplied from a curtain fold remover, the curtain fold remover includes a plurality of cloth holding plates, and the cloth holding plates are separated from each other. The fabric is pressed against the curtain fabric, then switched to the approaching position while maintaining the pressed state, to form a curtain fold, and the curtain fold is transported to the sewing position of the sewing machine in a state where the curtain fold is inverted by 90 degrees. Since the sewing machine is provided with a feed plate, a holding member, and a relay needle, and a guard member is provided on the sewing machine, the formed curtain fold can be transferred to the sewing position at a stretch. From, it is possible to improve the productivity by shortening the cycle time relating to curtain pleats sewing.

According to the curtain fold removing and sewing apparatus of the second aspect, the same effect as that of the first aspect is obtained, but the actuator for driving the guard member up and down over the guard position and the retracted position is provided. By driving the actuator at the timing of transferring the curtain fold in synchronization with the curtain fold remover, the guard member can be easily driven up and down over the guard position and the retreat position.

According to the third aspect of the present invention, the same effect as in the first aspect is obtained, but the sewing apparatus is integrally connected to the cloth holding plate farthest from the sewing machine among the plurality of cloth holding plates. Since the cloth edge detector for detecting the end of the curtain cloth is provided when the final curtain fold is formed, the cloth edge detector is attached from the position of the cloth edge detector when the end of the curtain cloth is detected by the cloth edge detector. Based on the distance to the cloth holding plate, the end curtain of the same size as the end curtain provided at the start end can be reliably provided at the end of the curtain fabric to form the final curtain fold. It is possible to sew good looking and high quality curtains.

According to the curtain fold removing and sewing apparatus of the fourth aspect, the same effect as that of the third aspect is obtained, but an actuator for driving the plurality of cloth holding plates over a separation position and an approach position, and Control means for controlling the actuator, using the cloth edge position detected by the cloth edge detector at the time of the final curtain fold formation, so that the dimension from the final curtain fold to the end of the curtain cloth becomes the set dimension. Since the actuator is controlled by the control means, the separation position and the approach position of the plurality of cloth holding plates can be accurately driven, the cloth end position is detected by the cloth end detector, and the curtain cloth is cut from the final curtain fold. Can be set with high accuracy up to the end of the process.

According to the curtain fold removing and sewing apparatus of the fifth aspect, the same effect as any one of the first to fourth aspects can be obtained, but each of the cloth holding plates faces up and down and can be opened and closed up and down. Since the upper holding plate and the lower holding plate capable of holding the curtain fabric at the closed position have the upper holding plate and the lower holding plate, the curtain fabric can be reliably pressed and sandwiched when the upper holding plate and the lower holding plate are at the closed position. Regardless, the formation of curtain folds can be simplified and ensured.

According to the curtain fold removing and sewing apparatus of the sixth aspect, a curtain fold remover for sequentially forming curtain folds at a plurality of positions at appropriate intervals on one end portion of the curtain material in a horizontal position, and the curtain fold remover. A sewing machine for sewing a curtain fold supplied from the sewing machine and a sewing machine for removing the sewing machine,
A plurality of cloth holding plates are provided, the cloth holding plates are pressed to the curtain cloth with the separated positions, and then the curtain folds are formed by switching to the approach position while maintaining the pressed state, and the curtain folds are turned by 90 degrees. It is configured to be transported to a sewing position of a sewing machine in an inverted state, and is integrally connected to a cloth holding plate farthest from the sewing machine among the plurality of cloth holding plates, so that a curtain fabric is formed when a final curtain fold is formed. The end of the curtain cloth is detected by the cloth end detector, so that the cloth end detector detects the end of the curtain cloth based on the distance from the position of the cloth end detector to the cloth holding plate to which it is attached. An end curtain part having the same dimensions as the end curtain part provided at the start end part can be securely provided at the end part of the curtain fabric to form a final curtain fold, and a high quality courteous with good appearance. It is possible to sewing.

[Brief description of the drawings]

FIG. 1 is a side view of a curtain fold removal sewing apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the sewing machine for removing curtain folds.

FIG. 3 is an enlarged side view of the lockstitch sewing machine.

FIG. 4 is a perspective view of a curtain fold forming mechanism.

FIG. 5 is a plan view of a curtain fold forming mechanism.

FIG. 6 is a side view of a curtain fold forming mechanism.

FIG. 7A is an explanatory diagram of forming three-fold curtain folds with a plurality of cloth holding plates, and FIG. 7B is an explanatory diagram of forming two-fold curtain folds.

FIG. 8 is a plan view of a sewing machine for removing curtain folds.

FIG. 9 is a view corresponding to FIG. 8 showing an internal mechanism.

FIG. 10 is an enlarged side view of the curtain fold remover.

FIG. 11 is a diagram corresponding to FIG. 10 when the curtain fold forming mechanism is turned upright.

FIG. 12 is an enlarged front view of a curtain fold remover showing an internal mechanism.

FIG. 13 is a diagram corresponding to FIG. 12, schematically showing an internal mechanism.

FIG. 14 is an enlarged plan view of a left-right moving mechanism.

FIG. 15 is a vertical sectional view taken along line D-D of FIG. 14;

FIG. 16 is a vertical sectional view taken along the line EE in FIG. 14;

FIG. 17 is an enlarged plan view of a work table.

FIG. 18 is a side view of a work table and a clamp mechanism.

FIG. 19 is an enlarged front view of the lockstitch sewing machine.

FIG. 20 is an enlarged side view of a main part of the lockstitch sewing machine.

FIG. 21 is an enlarged front view of a cloth holding plate provided with an end detection mechanism.

FIG. 22 is a block diagram of a control system of the curtain fold removal sewing apparatus.

FIG. 23 is a schematic flowchart of a part of a curtain fold sewing control routine.

FIG. 24 is a schematic flowchart of a part of a curtain fold sewing control routine.

FIG. 25 is a schematic flowchart of a routine for controlling curtain fold formation processing.

FIG. 26 is a schematic flowchart of a routine for controlling a process of setting a size of an end curtain portion.

FIG. 27 is a schematic flowchart of a fold discharge control routine;

FIG. 28 is an operation explanatory view of curtain fold formation,
(A) is an initial state, (b) is a pressing and holding state of curtain cloth, and (c) is a state where curtain folds are formed.

FIGS. 29A and 29B are explanatory diagrams illustrating the operation subsequent to the formation of curtain folds, where FIG. 29A illustrates a posture changing state, FIG. 29B illustrates a retracted state of a lower holding plate, and FIG. 29C illustrates a retracted state of both upper and lower holding plates.

30A and 30B are explanatory diagrams of the operation following the curtain fold formation, where FIG. 30A is a fold sewing state and the next fold formation state, and FIG.
Shows the sewing completed state and the next fold formation completed state, and (c) shows the discharged state of the sewn curtain fold.

31A is an explanatory diagram of a detection state of the end of the curtain cloth, FIG. 31B is an explanatory diagram of setting the end curtain portion small, and FIG. 31C is an explanatory diagram of setting the end curtain portion large. FIG.

FIG. 32 is an explanatory view of sewing a curtain fold.

FIG. 33 is a perspective view of a curtain fabric on which a plurality of curtain folds are sewn.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 curtain fold removal sewing machine 2 double stitch sewing machine 3 curtain fold removal machine 5 curtain fabric 6 curtain fold 16 relay needle 18 presser foot 20 X direction feed plate 25 curtain fold formation mechanism 37 fold formation drive motor 45 to 48 upper holding plate 50 -53 Lower holding plate 55-58 Cloth holding plate 148 Guard member 146 Guard air cylinder 157 Cloth end detection sensor 160 Control unit

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tomoyuki Fujita 15-1 Naeshiro-cho, Mizuho-ku, Nagoya

Claims (6)

[Claims] 1. A curtain fold remover for sequentially forming curtain folds at a plurality of locations at appropriate intervals on one end of a curtain fabric in a horizontal posture, and sewing on a curtain fold supplied from the curtain fold remover. A sewing machine for applying a sewing machine, the sewing machine having a curtain fold remover, wherein the curtain fold remover is a plurality of parallel cloth holding plates orthogonal to one end of the curtain cloth, and is spaced apart at equal intervals. A plurality of cloth holding plates movable to an approached approach position are provided, the cloth holding plates are separated from each other, the cloth holding plate is pressed against the curtain cloth, and then switched to the approach position while the pressed state is maintained. The sewing machine is configured to transfer the curtain fold to a sewing position of a sewing machine in a state where the curtain fold is turned 90 degrees. The sewing machine includes a feed plate for feeding a material to be sewn, The sewing machine comprises: a holding member that holds an object on the feed plate; and a plurality of vertically movable relay needles that restrain the curtain fold transferred from the curtain fold remover to the feed plate until the holding member holds the curtain fold. And a guard member which can be switched between a guard position protruding lower than the lower end of the sewing needle near the lower end of the sewing needle at the needle upper position and a retracted position retracted upward from the guard position. apparatus. 2. The sewing machine according to claim 1, further comprising an actuator for driving the guard member up and down over a guard position and a retracted position. 3. A cloth end detector which is integrally connected to a cloth holding plate farthest from a sewing machine among the plurality of cloth holding plates and detects an end of a curtain cloth at the time of forming a final curtain fold. The sewing machine for removing curtain folds according to claim 1, wherein: 4. An actuator for driving the plurality of cloth holding plates over a separation position and an approach position, and control means for controlling the actuators, wherein a cloth edge detector detects the final curtain fold. 4. The actuator according to claim 3, wherein the actuator is controlled by the control means such that the dimension from the final curtain fold to the end of the curtain fabric is a set dimension using the cloth edge position to be set. Sewing device for removing curtain folds. 5. The apparatus according to claim 1, wherein each of the cloth holding plates has an upper holding plate and a lower holding plate which are vertically opposed to each other, can be opened and closed up and down, and can hold the curtain cloth when in a closed position.
5. The sewing machine for removing curtain folds according to any one of items 4. 6. A curtain fold remover for sequentially forming curtain folds at a plurality of locations at appropriate intervals on one end of a curtain fabric in a horizontal posture, and sewing is performed on a curtain fold supplied from the curtain fold remover. A sewing machine for applying a sewing machine, the sewing machine having a curtain fold remover, wherein the curtain fold remover is a plurality of parallel cloth holding plates orthogonal to one end of the curtain cloth, and is spaced apart at equal intervals. A plurality of cloth holding plates movable to an approached approach position are provided, the cloth holding plates are separated from each other, the cloth holding plate is pressed against the curtain cloth, and then switched to the approach position while the pressed state is maintained. Is formed and transferred to a sewing position of a sewing machine in a state where the curtain folds are turned 90 degrees, and the furthest away from the sewing machine among the plurality of cloth holding plates. Is integrally connected to the cloth holding plate, the final curtain folds forming a curtain pleat-up sewing apparatus characterized in that a fabric edge detector for detecting the end of curtain fabric upon.