JPH10225585A - Automatic curtain frill sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a texture, realize automation of work other than data input, and fold the next frill part when a frill part is sewn by automatically measuring original cloth so as to be suitable for producing an ordered curtain, and sewing the frill part by moving a sewing machine in a fixed condition. SOLUTION: An ascendable-descendable cloth pressing-down member is arranged above a needle plate on a bed of a sewing machine 1, and a pair of safety pins are arranged above it, and a frill forming machine 2 is adjacently installed on a sewing machine main body of the sewing machine 1. A front holding means 12 of the frill forming device 2 clamps and holds both sides of a necessary length of cloth for a frill on the front part side of a curtain texture, and a frill folding means 13 forms a desired frill between the necessary length of cloth for the frill of the curtain, texture held by the front holding means 12, and a frill part supply means 14 inserts a frill part formed by the frill folding means 13 into a sewing part of the sewing machine 1. The sewing machine 1 is placed on an XY stage being a sewing maching moving device, and is made freely movable in the XY direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automates operations other than cloth setting and data input so as to be suitable for order curtain production, so that two or three machines can be operated by one person at the same time. It is possible to perform hook insertion, thread pinching, etc. during automatic sewing even when holding, and it is also possible to fold the next fold during sewing of the fold, which greatly improves productivity. It is about the machine.

[0002]

2. Description of the Related Art In recent years, demand for custom-made curtains has been growing. Curtains for sewing folds made by order are required to have a high-quality and luxurious feeling. Therefore, fabrics are made of higher quality than ready-made curtains, and the number of ridges in each fold is three or two. In addition, the number of each fold set is increased, and the use of the fabric is increased. And the height of the plurality of ridges in each set of folds is constant without height irregularities, the shape is parallel to the fabric perpendicular to the fabric without falling or collapsing, and the spacing between each set of folds is constant without irregularity Is required. In particular, the finished dimensions in the width direction must exactly match the width dimensions of the window of the building of the orderer, and strict conditions such as that somewhat longer ones are allowed, but shorter ones are not allowed. is there.

FIG. 20 explains the terminology of a curtain. First, as shown in FIG. 20 (a) which is an upper front view in a fabric state, the original width refers to the width of the entire curtain fabric in which both ends of the fabric are wound and sewn three times, and the ear width is defined as The left and right widths from the fabric edge to the pleat are referred to. The pleat length is the length of the pleat to be folded, and the hook interval (also called tack interval) is the distance between the pleat and the pleat. Then, as shown in FIG. 20 (b) which is an upper front view after sewing the pleats, the finished width is a width obtained by removing the width of both ears from the width of the pleated fabric, and the number of pleats is one sheet. Means the number of folds sewn on the curtain (9 in the example shown). As shown in FIG. 20C, which is an end view showing the difference in the number of peaks, there are two or three peaks as the number of peaks, and FIG. 20 (which is an end view showing the height of the peaks. As in d), the height of the mountain is
The length from the top of the pleat to the pleat is referred to, and as shown in FIG. 20 (e) which is an end view showing the depth of the trough, the depth of the trough means the distance from the bottom of the pleat to the pleat. Say the length.

By the way, in the process of finishing an order curtain, the curtain fabric is sewn (width joint, core attachment, awning, double winding of three frames, triple winding of hem, etc.), and the length is determined by a curtain scale or the like. Various machines and semi-automatic machines have already been developed. For fold sewing, original width, finish width, number of folds,
After calculating from the width of the ears and the like, and calculating the hook interval and the tack length, there are many parts that rely on skilled work such as positioning of the device, half-folding of curtain material, and manual folding of folds. Accordingly, there has been a demand for improving the efficiency and labor saving in addition to the quality aspects such as the stable and uniform shape of the folds and the accuracy of the finishing width.

Therefore, when forming and supplying the folds in the sewing of the curtain, the interval between the folds set many times and the required dimensions for each set of the folds are measured, and the errors in both dimensions and the overall finished width caused by the cloth feeding are caused by manual operation. The present applicant has already proposed a pleat forming / supplying device for the purpose of eliminating irregularities in the dimensions and formation of the pleats and valleys that occur. As described in Japanese Patent Application Laid-Open Nos. H8-38767 and H8-155169, this crease forming / supplying device is a curtain fabric having one end horizontally arranged with a crease assembly interval outward from a sewing portion of a sewing machine. Part of the fold, the left and right sides of the length required for the formation of the crests and valleys are sandwiched from above and below, and the dough that has been sandwiched is bent horizontally approaching the middle with the left and right sides toward the middle, A plurality of peaks and valleys are formed vertically and held, and the cloth holding the peaks and valleys is put on the cloth, and counterclockwise so that the tops of the peaks are positioned horizontally toward the sewing portion of the sewing machine.
Rotate the folds 0 degrees, supply the rotated folds horizontally to the sewing part of the sewing machine, release the pinching of a part of the cloth, and sew the base of the supplied folds and part of the peaks and valleys. The sewing machine is configured to be sequentially operated as described above.

[0006] By combining the above-described fold forming and supplying device with an electronic bar-tacking sewing machine, the following effects a) and b) can be obtained. a) In forming and supplying folds in sewing of a curtain, measurement of the interval size of each set of folds and measurement of required dimensions for each set of folds and feeding of the fabric, which are performed a number of times, are performed by the input storage of the control device and the output of the output. Since the operation is performed by the operation, no error occurs between the respective dimensions and the finished dimensions, so that the quality of the curtain is improved. b) Since the formation of the folds in the sewing of the curtain is performed by the operation and operation of the input storage of the control device and the output thereof, the dimensional error of the crests and valleys of each fold and the collapse or collapse of the shape do not occur. Quality is improved.

[0007] In addition to the mechanisms disclosed in the above-mentioned JP-A-8-38767 and JP-A-8-155169, calculations are further performed by installing a microcomputer, and automation such as positioning of the apparatus is advanced. The procedure is described below. 1) Based on the input of the measured original width and finished width, the number of crests, the number of folds, the width of ears, etc., the required length of one tack, the interval between hooks, the height of creases of creases, etc. are automatically calculated. 3) Start ON with the front end fabric setting, 4) Automatic fold and insert under the sewing machine holder, 5) Folding plate and ruler escape from fold fold, 6) Automatic fold sewing, 7) Repeat the above, repeat fold sewing from one side of the curtain material, 8) Adjust the finishing width before the last 3 tacks (some manual work is necessary), 9) Stop automatically before the last fold , Set the fabric edge and restart. 10) Finish with the last pleat.

[0008] The machine according to the above-mentioned procedure has remarkably improved in quality, efficiency and de-skill compared to the conventional machine, but still requires one operator per machine. That is, an operator operation is required for the next operation. 1) Measurement of base width 2) Input (base width, finish width, number of folds, number of ridges, ear width, etc.) 3) Setting of the front end of the fabric 4) Holding of the fabric during forward / backward movement of the device (loose fabric) 5) Fabric retention before sewing machine idle feed / reverse (loose fabric, fabric tension) 6) Align upper edge of fabric just before holding front / back upper / lower clamp device 7) Last 3 tacks Operation when adjusting the finishing width of the fabric 8) Setting the fabric edge of the last fold

[0009]

SUMMARY OF THE INVENTION Incidentally, the applicant of the present invention has filed Japanese Patent Application No. 8-20366 for the purpose of further saving labor.
No. 5 proposes a curtain fold sewing machine, and the above-mentioned operations 1), 4), 5), 6), 7),
8) was automated. Therefore, after the operations 2) and 3) described above, the operation is fully automatic, and two or three vehicles can be operated by one person. Further, even in the case of one person, it is possible to perform post-process operations such as thread picking and hook insertion during the fully automatic operation, and the efficiency is dramatically improved.

However, even if one can operate a large number of machines, the productivity per machine does not improve much. To improve the efficiency per machine, it is necessary to reduce the cycle time per fold. However, the length of the fold is of various sizes such as 5 cm, 7.5 cm and 9 cm, and the number of stitches, sewing specifications and gusset specifications differ depending on the manufacturer. Equipped with a stop sewing machine. Even with such an electronic bar-tacking sewing machine, the sewing needle is fixed, and the curtain fabric is moved back and forth, left and right, and fold sewing is performed. Therefore, productivity is limited.

Here, the movement of the cloth at the fold is as follows. 1) Leave a hook interval from the fold. 2) Pass the protruding part of the curtain between the front and rear upper and lower clamps. 3) Clip the front and rear of the tack by the front and rear upper and lower clamps. 4) The folds (two ridges or three). 5) Retract 6) Rotate the fold 90 degrees 7) Insert the fold under the sewing machine retainer 8) Hold the fold 9) Escape from the fold of the ruler, folding plate and return 10) Sewing machine retainer Descending 11) Jump feed (moving the sewing part to the sewing origin) 12) Plait sewing (sewing left and right across the pleat between the sewing machine holder and lower plate blank) 13) Thread trimming 14) Jump feed (stitch stop sewing position) 15) Thread lock stitching 16) Thread trimming (may not be available) 17) Jump feed (moves backward to holding origin) 18) Sewing machine holding up

Here, at present, there is a cloth movement such as 11) forward, 12) left and right movement, 14) retreat, 15) left and right movement (two-letter sewing) or back and forth movement (reverse T-shaped sewing). In addition, the steps 1) to 6) cannot be overlapped. However, if the pleats are fixed without moving from 10) after the sewing machine holder lowers to 18) the sewing machine holder rises,
Overlap work is possible. Therefore, if the fold part is fixed after the sewing machine holder is lowered and the sewing machine (needle) is moved back and forth,
During this time, the fabric is in a stationary state, and during that time, if the steps 1) to 6) are simultaneously performed and the machine presses up, the cycle time can be greatly reduced.

Therefore, an object of the present invention is to realize automation of operations other than cloth setting and data input by automatically measuring the original width so as to be suitable for order curtain production, and to fix the fold portion in a fixed state. SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic curtain fold sewing machine that can fold the next fold during sewing of the fold by sewing the sewing machine while moving the sewing machine.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to claim 1 holds a sewing machine having a sewing needle, for example, a lockstitch thread cutting sewing machine, and the like, and sequentially holds the curtain cloth from the front end side. For example, front holding means using a pair of front and rear clamping members, etc., and folds the curtain cloth portion held by the front holding means, for example, folds using a pair of folding members that are paired up and down. A front part holding means and a fold folding means are integrally rotated to insert a fold part of the curtain cloth into a sewing part of the sewing machine. A curtain fold sewing automatic machine, comprising: a clamp member and a slide member that are movable in the front-rear direction while holding a rear end of the curtain cloth. And a rear end holding device using a door member and the like, an original width measuring device capable of measuring an original width of the curtain cloth by moving the rear end holding device backward, and the sewing machine can be moved in the front-rear and left-right directions. For example, a configuration including a sewing machine moving device using an XY stage or the like is characterized.

Here, for example, the fold forming / supplying device is assembled on the sewing machine main body side, and the rear end holding device and the original width measuring device are incorporated on the cloth placing table side on which the curtain cloth can be spread and placed. ing. The dough mounting table has a length of 2 m or more, and the dough mounting table is connected to the sewing machine main body side. A space for receiving the folding means and the fold supply means is formed. The curtain fabric is set by holding the front end by the front holding means of the fold forming and supplying device and holding the rear end by the rear holding device. The rear end holding device that holds the rear end of the curtain fabric moves the curtain fabric rearward on the fabric placing table to make the curtain fabric lightly stretched between the front holding means on the front end side. In this state, the original width of the curtain fabric is measured by the original width measuring device. The formation of the folds and the insertion into the sewing portion of the sewing machine by the fold forming and supplying device are sequentially performed in accordance with the number of folds. During this time, the forward and backward movements of the rear end holding device are sequentially performed in conjunction with each other. An XY stage is typical as a sewing machine moving device, but a moving device having another configuration may be used.

As described above, according to the first aspect of the present invention, first, the sewing machine, the front holding means for sequentially holding the curtain fabric from the front end side, and the folds for folding the held curtain fabric portion. Folding means, a fold forming / supplying device having a fold supply means for rotating the two means integrally and inserting a fold portion of the curtain fabric into a sewing portion of the sewing machine; and This is a curtain fold sewing automatic machine equipped with a rear end holding device that can move in the direction and an original width measuring device that measures the curtain cloth original width by moving it backward. The original width of the curtain fabric can be measured by the original width measuring device based on the amount of backward movement of the device. Since the original width can be automatically measured in this way, automation of operations other than the cloth setting and data input excluding the original width can be realized. Therefore, it is particularly suitable for order curtain production, and the productivity can be greatly improved. Further, according to the first aspect of the present invention, since the sewing machine is moved in the front / rear and left / right directions by the sewing machine moving device, the fold can be sewn in a fixed state, so that the next fold is folded during the sewing of the fold. The waiting time can shorten the cycle time and further improve the productivity.

The invention described in claim 2 is the first invention.
The curtain fold sewing automatic machine according to the above, wherein, at the sewn portion of the sewing machine, the fold portion is in a stationary state, and the sewing machine moves the sewing machine in the front-rear and left-right directions. In parallel with performing fold sewing, two-letter sewing, reverse T-shaped sewing, etc., in the fold formation supply device, the curtain cloth is held by the front holding means, and the holding portion is held by the front holding means. The folds are folded by, for example, two ridges or three ridges, and then the folds are rotated by the fold supply unit to wait for insertion into the suture. , Is characterized.

As described above, according to the second aspect of the present invention, the folded part of the sewing machine is set to a stationary state at the sewing portion.
During sewing while moving the sewing machine one stitch at a time by the sewing machine moving device according to claim 1, in the fold forming / supplying device, the fold of the curtain fabric holding portion by the front holding means is fold-folded by the fold folding means. Since the folds can be rotated by the fold supply means to wait for insertion into the sutures, the cycle time can be shortened and the productivity can be improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic curtain fold sewing machine according to the present invention will be described below with reference to FIGS. First, FIG. 1 is an external perspective view showing an automatic curtain fold sewing machine as an example to which the present invention is applied.
Is an enlarged perspective view showing a sewing machine part, a fold part, and a front part holding device part in the curtain fold sewing automatic machine,
FIG. 3 is an enlarged perspective view of the cloth placing table, the rear and middle holding devices and the guide device in the curtain fold sewing automatic machine. 4 is an enlarged front view of an operation panel of the curtain fold sewing automatic machine shown in FIG. 1, FIG. 5 is a perspective view showing an example of a sewing machine moving device, and FIG.
1 is a schematic plan view of an automatic curtain fold sewing machine according to the present invention. 7 to 9 are flowcharts showing an example of automatic control by the automatic curtain fold sewing machine according to the embodiment of the present invention. Further, FIG. 10 to FIG.
FIG. 9 shows a sewing procedure from the front clamp state of the fabric to the last fold according to the embodiment of the present invention.

First, in FIGS. 1 to 3, 1 is a sewing machine, 2 is a fold forming / supplying device, 3 is a cloth placing table, 4 is a rear end holding device, 5 is an original width measuring device, and 6 is an intermediate portion adjusting device. , 7
Is a cloth feed guide device, 8 is a needle plate, 9 is a cloth presser, 10
Is a retaining needle, 11 is an operation panel, 12 is a front holding means, 1
3 is a fold folding means, 14 is a fold supply means, 15 is a space portion, 16 and 16 are front clamp plates, 17 and 17 are rear clamp plates, 18, 18 and 18 are lower fold plates, and 19 and 19 are upper folds. Plate, 20 is a slide plate, 21 is a lower clamp plate, 22 is an upper clamp plate, 23 is a dough auxiliary pressing means,
24 is a clamp plate, 25 is a guide case, 26 is a belt conveyor, and 27 is a motor. That is, as shown in the drawing, the curtain fold sewing automatic machine includes a sewing machine 1, a fold forming / supplying device 2, a cloth placing table 3, a rear end holding device 4, an original width measuring device 5, an intermediate portion adjusting device 6, and the like. And a fabric feeding guide device 7.

As shown in FIG. 2, the sewing machine 1 includes a needle plate 8 on a bed, a lifter 9 which can be moved up and down, and a pair of retaining needles 10, which are further disposed above the needle plate 8.
An operation panel 11 is provided on the main body of the sewing machine adjacent to the sewing machine 1. The fold forming device 2 is attached adjacent to the sewing machine main body of the sewing machine 1, and is used to clamp and hold both sides of a fold required at the front side of a curtain cloth C (see FIG. 10 and thereafter) described later. Part holding means 12; fold folding means 13 for forming a desired fold between folds of the curtain cloth C held by the front holding means 12; and fold folding means 13
The folds formed by the sewing machine are attached to the sewn portion of the sewing machine 1 (the needle plate 8).
And a fold supply unit 14 for insertion between the nip and the cloth holder 9). The cloth placing table 3 is on a table having a lateral length of about 3 to 4 m, and is tightly integrated adjacent to the main body 1 of the sewing machine 1. The fold forming device 2 as described above, that is, the front holding means 12, the fold folding means 13 and the fold supply means 14, and the intermediate adjustment device 6, which will be described later, include a space 15 formed in the cloth placing table 3.
Are located in

More specifically, as shown in FIG. 2, the front holding means 12 holds the front side of the dough, and firstly, a pair of upper and lower front clamp plates 1 for holding the front end of the dough.
6 and 16 and a pair of upper and lower rear clamp plates 17 and 1 for holding a portion separated from the holding portion by a predetermined dimension of the fold length.
7 is provided. The front clamp plates 16, 16 and the rear clamp plates 17, 17 hold the fabric in a horizontal state. The crease folding means 13 is located between the front clamp plates 16 and 16 and the rear clamp plates 17 and 17 of the front holding means 12, and includes three lower folding plates 18 arranged below.
18, 18 and two upper folding plates 1 arranged above
9, 19 are provided. These lower folding plates 18,
The 18, 18 and the upper folding plates 19, 19 move up and down together, and are arranged alternately in the front-back direction. In addition, one of the three lower folding plates 18, 18, 18 at the center is lowered in the number of mountains 2 of the liquid crystal display unit 28 in FIG. It is possible to ascend and fold three peaks, and the two upper folding plates 19 can also be in a state of being overlapped with each other. Fold supply means 14
Is the front clamp plate 1 of the front holding means 12 as described above.
6, 16; rear clamp plates 17, 17; their driving devices and lower folding plates 18, 18, 1
8. It comprises a rotatable rotating plate in which the upper folding plates 19, 19 and their driving devices are assembled, a slide member in which this rotating plate is assembled, and the driving devices for them.

The rear end holding device 4 holds the rear end of the cloth, and as shown in FIGS. 1 and 3, a slide plate 20 which can be moved in parallel on the cloth placing table 3, and this slide A lower clamp plate 21 fixed to the plate 20;
Upper clamp plate 22 assembled to be able to move up and down, and a dough auxiliary presser 23 disposed above the tip of lower clamp plate 21
And a driving device for them. A sensor is also provided for determining whether the cylinder has been lowered when the switch is used to lower the cylinder and clamp the near side of the fabric. The slide plate 20 includes a lower clamp plate 21, an upper clamp plate 22, and
The back of the fabric is clamped with 3 and the second fold is held until the second fold is released. Then, the fabric clamp is opened with the last fold and then retracted. The stop position of the slide plate 20 is as follows.
It is roughly divided into two. (1) When the base width of the dough is within the placing table, stop at the first dough clamping point, that is, zero point. (2) If the base width of the dough still remains above the mounting table, stop at the rear end Q point. (3) If the base width of the dough is larger than the mounting table, but the sewing is performed and the remaining dough is within the mounting table, stop at the end of the remaining dough.

The original width measuring device 5 is incorporated in the drive unit of the slide plate 20 of the rear end holding device 4, and can measure the original width of the curtain cloth based on the amount of movement of the slide plate 20. Things. For details, dough table 3
A servo motor is installed at the rear end (right side deeper direction). That is, a servo motor is installed in connection with a slide rail for moving back and forth in a straight line with the rear end holding device 4. A gear is attached to the servomotor shaft, and a timing belt runs up and down the back of the slide rail on the gear. The timing belt and the slide base on the slide rail are communicated.
0 is linked. The rear end holding device 4 has a base point sensor attached to the back of the slide rail so that it always stops at the same position when the dough is first set, and sensors are arranged at a total of three positions, a front limit point and a rearward movement limit point. I have. That is, three sensor light receiving portions are attached to the back of the slide rail in parallel with the rail, and the slide plate 20 has a light emitting sensor and moves forward and backward. Here, the light receiving sensor K (the point to be clamped first), the light receiving sensor L (the rear end point), and the light receiving sensor M (the front limit point).

Next, a measuring method by the above-described element width measuring device 5 will be described. First, the upper and lower plates of the front clamp plate 16 clamp the front end of the dough. The computer uses the front clamp plate 16
The current position (position) of the rear end holding device 4
The length to the set position (base point) is also recognized. Further, the trailing edge holding device 4 clips the fabric edge, recedes linearly along the slide rail by the servomotor, picks up a pulse signal until the fabric is stretched by the fabric limit and stops, and measures the fabric length. Then, the number is displayed on the liquid crystal display section 28 of the operation panel 11 as the original width (see FIG. 4).

The intermediate section adjusting device 6 is arranged in a space 15 formed in the cloth placing table 3 and, as shown in FIGS. 2 and 3, at a position slightly away from the fold forming and supplying device 2 rearward. A pair of upper and lower clamp plates 24, 24, which are intermediate holding members disposed at the end of the space portion 15 of the dough placing table 3, and a slide mechanism for sliding the clamp plates 24, 24 in a direction orthogonal to the dough feeding direction; , And their driving devices. Such an intermediate clamp plate 24, 2
The curtain cloth is held in a horizontal state by the front clamp plates 16 and 16 and the rear clamp plates 17 and 17 on the front side and the lower clamp plate 21 and the upper clamp plate 22 on the rear end. When the intermediate section adjusting device 6 is operated with the dough set on the mounting table, the dough is always adjusted to the third remaining fold. After the adjustment of the orthogonal movement to the right side, it is retracted to the right in the orthogonal direction in the fabric feeding direction while being located in the space 15. And the intermediate | middle part adjustment apparatus 6 has left a way so that the slide board 20 holding the back end of cloth | dough can advance further.

Further, a cloth feeding guide device 7 is provided on the front side of the cloth placing table 3. As shown in FIGS. 1 and 3, the cloth feeding guide device 7 includes a vertically movable guide case 25 capable of storing a curtain cloth hanging from the cloth placing table 3 toward the front side, a driving device therefor, and a guide case 2.
5 is provided with a belt conveyor 26 on the bottom surface and a motor 27 for driving the belt conveyor 26. By driving the motor 27, the cloth on the belt conveyor 26 is moved by the slide plate 21 and the clamp plate 22 of the rear end holding device 4 and the cloth auxiliary pressing means 2.
3 and can be fed in response to the feed of the back end of the fabric clamped between them. The operation panel 11 includes a liquid crystal display unit 28, an operation key unit 29,
A ten key section 31 and a main body operation key section 32 are provided. Here, the liquid crystal display unit 28 displays various dimensions in the scale setting mode in which the original width of the curtain fabric is automatically measured. In this display, when the original width is 1,865 mm, the finishing width is displayed. 930mm, 9 folds, 3 ridges, 25 ears
mm. In addition to such a rule setting mode, simple setting to be input when only the number of folds is unknown, data of frequently sewn dimensions are stored and the No. There is a setting mode such as a pattern number for calling.

In the above, as shown in FIG. 5, the sewing machine 1 is mounted on the XY stage 50 which is a sewing machine moving device, and is movable in the XY directions. That is, XY
The stage 50 has a pair of rails 52, 5 on a base 51.
2 and a saddle 55 in the orthogonal direction are assembled via a ball screw 54 which is rotationally driven by a motor 53.
A top table 59 in an orthogonal direction is movably mounted on a pair of rails 5 via a pair of rails 56 and a ball screw 58 rotated by a motor 57 so as to be movable in the XY directions (front and rear, left and right directions). And such an XY stage 50
The sewing machine 1 is fixedly mounted on a top table 59. Note that a stepping motor or a servomotor is used as the motors 53 and 57.

As described above, an automatic curtain fold sewing machine as shown in a schematic plan view in FIG. 6 is constituted. In addition,
In FIG. 6, a is a front clamp upper and lower plate (16), b is a rear clamp upper and lower plate (17), and c is an upper cloth edge aligning device (2).
4), d is a cloth end clamp (21, 22), e is an auxiliary clamp (21, 23), f is an elevating conveyor (fabric feed guide device 7, belt conveyor 26), and g is a servo motor (rear end holding device). 4 is a driving device), O is a scale setting position, P is a cloth end clamp rear limit position, and Q is 3
The m point (different depending on the hook interval and the tack length), and R indicates the cloth edge clamp front limit position, respectively.

Next, the operation and operation of the curtain fold sewing automatic machine having the above-described configuration will be described step by step with reference to the flowcharts of FIGS. In addition,
The operation is performed under the control of a control device such as a microcomputer (not shown). First, the power switch 0N is used to select whether to set a scale, a normal setting, a simple setting, or a pattern setting in the setting section of the liquid crystal display section 28 of the operation panel 11 in FIG. In step S1, it is first determined whether or not to set a scale, and in the case of setting a scale, necessary data is input and set in step S2. That is, using the operation panel 11 shown in FIG. 4, data necessary for sewing the order curtain, such as the finishing width, the number of folds, the number of ridges, and the width of the ears, is input. These inputs, that is, step S2 may be performed after the automatic measurement of the original width and the input are performed in step S6. Next, the curtain fabric is set. That is, in the next step S3, as shown in FIG. 10, the front end of the curtain cloth C is held by the front clamp 16, while in step S4, the rear end of the cloth is fixed to the lower clamp plate 21 and the upper clamp plate 2.
Hold at 2. The setting for such a clamp is performed by an operator holding the dough by hand. When the curtain cloth C is set and its front and rear ends are clamped, the cloth is passed between the front rear clamp plates 17, 17 and the intermediate clamp plates 24, 24, respectively. Keep it in a state.

When the front and rear ends of the curtain cloth C are clamped in this way, in the next step S5, the lower clamp plate 21 and the upper clamp plate 22 holding the rear end of the cloth.
Is carried out. As a result, the curtain cloth C is stretched horizontally between the front clamp plate 16 at the front end and the upper and lower clamp plates 21 and 22 at the rear end. In the subsequent step S6, the original width measuring device 5
, And the numerical value of the original width is measured. By the input setting of the original width gauge and the necessary data described above, in the next step S7, various types of information such as a hook interval, a required length of the fold, a height of the hill, and a change of the number of hills between two hills or three hills are obtained. Is automatically set. That is, the hook interval between the sewing machine presser and the front clamp plate 16, the length of one tack between the front clamp plate 16 and the rear clamp plate 17 is determined, and the height of the fold of the lower folding plates 18, 18, 18 is determined. Determination of the amount of rise and lower folding plates 18, 18, 1
Automatic setting such as determination of the number of sheets 8 and the upper folding plates 19 is performed.

When the start switch is turned on, in step S21, a movement adjustment in a direction orthogonal to the cloth feeding direction in a state where the curtain cloth C is clamped by the intermediate clamp plates 24, 24 is performed. That is, as shown in FIG. 12, the curtain cloth C clamped to the front by the front clamp plates 16 and 16 is clamped by the clamp plates 24 and 24 to perform flush adjustment of the upper end portion of the cloth. This flush adjustment is controlled by an optical detection device. Thereafter, after the rear clamp plates 17, 17 hold the material, the clamps of the clamp plates 24, 24 are released. At this time, as shown in FIG.
The cloth is held by the rear clamp plate 17 at a position away from the front clamp plate 16 holding the front end with respect to the curtain cloth C by a predetermined fold length. Following the flush adjustment of the upper end portion of the dough, the next step S22
Then, after the upper and lower clamp plates 21 and 22 holding the back end of the fabric are moved forward, a fold folding command is issued in the subsequent step S23. That is, in step S22,
The upper and lower clamp plates 21 holding the back end of the cloth for shifting the cloth at the time of folding at the subsequent step S23 and inserting the cloth into the sewing machine 1 at the step S24 following the folding. , 22 are temporarily moved forward in advance.

The amount of forward movement of the upper and lower clamp plates 21 and 22 is determined not only by the distance between the hooks and the required length of the fold, but also by the dimension of the cloth to be inserted into the sewing machine 1 (for example, the empty space between the sewing press 9 and the sewing sewing origin). It is set in advance to an amount (for example, 65 mm) obtained by adding a marginal amount to a feed amount of 50 mm. The rear end holding device is separated from the front end by interlocking with the back and forth movement of the folding device with a certain margin to keep the fabric lightly tensioned.
It is also possible to reverse.

The folding at step S23 is performed by raising the lower folding plates 18, 18, 18 from below and lowering the upper folding plates 19, 19 from above. At this time, the front clamp plate 16 moves backward, and the rear clamp plate 17 moves forward and moves synchronously. That is, in the case of three peaks, as shown in FIG. 11 (a), three lower folding plates 18, 18, 1
8 rises while two upper folding plates 1
9, 19 are lowered, and three creases are formed. In the case of two ridges, as shown in FIG. 11 (b), one central piece descends from below and the two lower folding plates 18, 18 on both sides rise with respect to the cloth. , From the top, two sheets are superimposed to form an apparent upper sheet 19
(19) is lowered, and two folds are formed. After the predetermined folds (three peaks in the setting of FIG. 4) are performed in this manner, the cloth is inserted into the sewing machine 1 in the subsequent step S24.

That is, in the next step S24, FIG.
As shown in FIG. 3, the turning plate of the fold supply unit 14 is turned 90 degrees toward the sewing machine 1 and, as shown in FIG.
The slide member of the fold supply means 14 is moved to the sewing machine 1 side, and the fold portion of the cloth formed as described above is inserted into the sewing portion of the sewing machine 1 (between the needle plate 8 and the cloth holder 9).
Then, proceeding to the next step S25, a sewing pattern is selected.

Next, as shown in FIG. 14, before the sewing machine 1 fixes the fabric folds on the needle plate 8 by the cloth holder 9, the retaining needles 10 and 10 are penetrated into the fabric folds. When the retaining needles 10, 10 penetrate through the fabric folds, the lower folding plates 18, 18, 18 and the upper folding plates 19, 19 and the cloth retainer 9 are formed with open grooves as shown. The penetration of the staples 10, 10 into the folds of the cloth is performed without any trouble. Thereafter, as shown in FIG. 15, the lower folding plates 18, 18, 18 and the upper folding plates 19, 19 are dissociated and removed from the fabric. Then, the fabric folds on the needle plate 8 are fixed by the cloth presser 9 by the sewing machine 1, and the retaining needles 10, 10 are lifted up from the fabric folds and removed. Then, the disengagement operation of the front clamp plate 16 and the rear clamp plate 17 and the removal operation from the cloth are performed.

Further, a sewing pattern is selected in step S25. This is automatically calculated in step S7 based on the input of the original width, the finished width, the number of folds, the number of ridges, the width of the ears, and the like, and the numerical value obtained as a result, namely, the hook interval, 1
The tack size and the height of Mt. Hida are determined. The height of the crest is formed by the amount of rise of the lower folding plates 18, 18, and 18, and a clog stitch pattern most suitable for the height of the crease is automatically selected. Each sewing pattern is input before sewing, and the depth of a valley is also input by default.

Next, the fold sewing at step S26 will be described. This fold sewing method is performed by the sewing needle of the sewing machine 1. As shown in FIG.
The fabric is sewn in the vertical direction along the required edge of the fold to form a fold seam 33. Subsequently, two-shape sewing or reverse T-shaped sewing is performed. In other words, the method of sewing two-shape is sewing machine 1.
As shown in FIG. 17A, a fold portion of the fabric is sewn in parallel with the fold stitch portion 33 to form a two-shaped stitch portion 34 as shown in FIG. I do. The reverse T-shaped sewing is also performed following the fold sewing section 33 using the sewing needle of the sewing machine 1 as shown in FIG.
As shown in (b), a fold portion of the cloth is sewn at right angles to the fold stitch portion 33 to form an inverted T-shaped stitch portion 35. After such sewing is performed, in the next step S27, thread trimming is performed by the automatic thread trimming device of the sewing machine 1, and the cloth presser 9 returns to the cloth presser origin.

The above steps S21 to S27
5 and 6, since the sewing machine 1 is movable in the XY directions by the XY stage 50, the fold stitches and the mountain stop stitches in Step S26 are performed by the sewing machine 1. It is performed by moving one needle at a time. That is, on the XY stage 50, the sewing machine 1 on the top table 59 is intermittently fed back and forth and right and left by stepping motors (or servo motors) 53 and 57, and
By moving the needle by needle, the fold seam 33 and the two-shape seam 34 or the reverse T-shape seam 35 are sewn. In this manner, the sewing machine 1 can be sewn while the fabric fold portion is stationary by the movement of the sewing machine 1. Therefore, the forward movement of the rear end holding member of step S22 and the subsequent folding of the fold of step S23 can be performed in parallel.

In detail, 1) a hook interval is provided from the fold portion, 2) a protruding portion of the curtain is passed between the front and rear upper and lower clamps, and 3) a front and rear upper and lower clamp is used to clip the front and rear of one tack. 4) Fold (2 or 3 folds) 5) Retract 6) Rotate the fold 90 degrees in a series of folds 11) Jump feed (moving the sewing section to the sewing origin) 12) Ply sewing ( 13) Thread trimming 14) Jump feed (moving backward to the lock-stitch position) 15) Lock-lock stitch 16) Thread trimming (May be omitted) 17) Jump feed (moves backward to the holding origin) 18) Sewing operation can be overlapped with a series of sewing operations of rising.

Further, the adjustment of the movement of the intermediate holding member in the direction perpendicular to the cloth feeding direction in step S21 for the next fold is reduced, and the work time for each fold is reduced.
Efficiency is improved. Further, at the same time as the completion of sewing by the sewing machine 1 and the raising of the cloth presser 9 of the sewing machine 1, the folding of the folds has already been completed and the sewing machine has turned 90 degrees and is in a standby state, so that the cloth is inserted into the sewing machine in step S24 immediately. Simultaneously with the lowering of the presser foot 9 of the sewing machine 1, the respective members of the fold forming and supplying device 2 return to the position described above. 3) Clip around the required length of one tack with front and rear up and down clamps. 4) Fold it into folds (two or three ridges). 5) Retract. 6) Rotate the folds 90 degrees. Is performed and the sewing is completed.

Thereafter, the retreating operation of the rear end holding member in step S28 is performed, and between the fixing of the cloth fold portion on the needle plate 8 by the sewing machine 1 by the cloth presser 9 and the rear end holding member, the curtain cloth C is removed. It is in a state of being lightly stretched horizontally.
Next, in step S29, it is determined whether or not the operation is the adjustment operation. In the case of Yes, since the computer of this machine knows the remaining number of folds to be sewn, if the remaining folds are other than 1 or 3 in the next step S32, the process returns to the step S21 to automatically repeat the operation sequentially. Will repeat the pleat sewing. As shown in FIG. 16, the fold forming / supplying device 2 returns to the initial state for the second and subsequent folds of the fold, and the cloth folds on the needle plate 8 by the sewing machine 1 are removed. The holding by the front clamp plate 16 and the rear clamp plate 17 is performed with the cloth clamp 9 fixed. As a result, the distance between the hooks, that is, the distance between the cloth holder 9 of the sewing machine 1 and the front clamp plate 16 can always be accurately measured.

In step S32, the remaining fold is reduced by 3
When it is determined that the number is individual, automatic adjustment of the finishing width is performed in step S33. That is, it is necessary to accurately finish the finishing width of the order curtain. For that purpose, the computer calculates again from the remaining dough width (recognized by the position of the rear end holding device) before the last three tacks,
The finish width is adjusted by automatically positioning each device without changing the hook interval and ear width. For example, if there is no deviation in the remaining dough, the length of one tack (the distance between the front clamp plate 16 and the rear clamp plate 17) does not change (the position does not change), and the height of the folds is the same as the conventional height. become. Also,
In many cases, deviation from the actual size occurs when the cloth is stretched or contracted during sewing, or when input is measured and input manually without using an automatic scale. In the final three-tack adjustment at this time, the length of one tack changes due to automatic calculation and automatic positioning, and a slight change occurs in the height of the fold. In the example of FIG. 4, the heights of the folds are slightly different between the up to six folds and the last three folds, but in the case of three folds, one fold has six sides, which is three times 18 sides. Since the error is dispersed, only an error that is hardly found is generated.

After the automatic finishing width adjustment is performed, the flow returns to step S21 again, and the fold sewing is sequentially repeated. In step 29, the operation is not the adjustment operation (N
When it is determined as o) (continuous operation mode or the like), it is determined in the next step S31 whether or not it is the last fold. If it is not the last fold, the flow returns to the step S21 to further perform an automatic fold sewing process. When it is determined in step S31 and step S32 that the fold is the last fold, the finishing width of the last fold is adjusted, and after the sewing is completed, the cloth hold 9
Rise and the sewing of one curtain is completed.

If it is determined in step S1 that the scale is not set (No), the above-described automatic scale and automatic width input are not performed. Therefore, in step S11, items necessary for the sewing of the order curtain, such as the original width, the finished width, the number of folds, the width of the ears, and the number of ridges, are input and set. Next, the curtain cloth front end is held in step S12, the rear end holding member is retracted in step S13, and the curtain cloth is clamped to the rear end holding member in step S14. Then, after starting, the above-mentioned work is repeated.

By the way, although omitted in the flow chart, when the remaining two folds (the folds immediately before the last fold) in the step S32, the intermediate holding member is retracted, so that the step S21 is not performed. There is no movement adjustment, and the processing shifts to the processing after step S22.

As described above, the original width of the curtain cloth C can be automatically measured by using the curtain fold sewing automatic machine of the embodiment. Therefore, each of the folded folds is based on the automatically measured original width. Dimensions can be automatically set, that is, operations other than cloth setting, data input excluding the original width, and sewing of the last fold can be automated, which is suitable for order curtain production, and productivity can be greatly improved. When forming the folded portion, the upper and lower clamp plates 21 and 22 holding the rear end of the curtain cloth C once move forward in advance, so that the upper and lower folding plates 18, 18, 18, 19, and 1 are moved.
9, the fold of the fabric is reliably performed without any trouble, and the subsequent insertion of the fold of the fabric into the sewing portion of the sewing machine 1 is smoothly performed. Further, a front clamp for forming the next fold of the fabric is formed. The holding of the cloth by the plate 16 and the rear clamp plate 17 can also be performed reliably. Also, curtain fabric C
In order to adjust the movement in the direction orthogonal to the cloth feeding direction while holding the intermediate portion of the curtain cloth C in the direction perpendicular to the cloth feeding direction, particularly, when feeding the curtain cloth C for forming the next folded part, The quality of the pleats can be improved by preventing a step from being formed on the end face.

Further, the sewing machine 1 is controlled by the XY stage 50.
Can be sewn back and forth and left and right to sew the folds in a fixed state.By folding the next fold during sewing, and making the machine stand by, the cycle time is shortened and productivity is further improved. Can be improved. That is, in the sewing portion of the sewing machine 1, the folded portion of the fabric fold is set to a stationary state, and XY
While the sewing machine 1 is being sewn while moving the sewing machine 1 by one stitch by the stage 50, the fold forming and feeding device 2 can fold the curtain fabric C and then rotate it to wait for insertion into the sewn portion. , Shorten the cycle time,
Further improvement in productivity can be achieved.

In the above embodiment, the original width is always measured automatically. However, the original width is measured in advance using the automatic curtain fold sewing machine of the embodiment. May be input. In the embodiment, the fabric having the original width of 3 m to 4 m has been described. However, the dimensions thereof are arbitrary.
The same can be applied to the doughs exceeding m if the placing table and the automatic measuring device are configured correspondingly.

In other words, the method of first inputting the original width and the like, instead of setting the measuring scale as described above, is also performed when the pleats are sewn on a curtain material having a width larger than the mounting table. For example, when sewing a 6 m fabric on a 4 m mounting table, the computer always recognizes the remaining fabric and the number of folds by inputting necessary items. Therefore, in the step S28, the sewing machine 1 is retracted to the rear end of the placing table of 4 m, and at the time of sewing for about 4 m, the cloth holding 9 of the sewing machine 1 is fixed and the rear end holding member is moved to the step S28.
Is released, and is retracted to the cloth remaining position (position of 2 m) and stopped. Therefore, at that time, the rear end holding member of step S4 is clamped at the end of the curtain base to start the operation. Thereafter, the above-described steps are performed to complete the work, and the processing and control are completed.

Further, for example, in the case of a long cloth having an original width of about 10 m, the automatic measuring is repeated a few times, for example, about 3 m to 4 m, and finally the automatic measuring is performed. Good. In this case, the fabric clamp of the rear end holding device needs to be clamped a plurality of times. That is, the rear end holding device is designed to be located rearward from the first time to immediately before the last time, and the last time is designed to stand by at the remaining fabric end point. At the time of each automatic measuring, the presence or absence of an ear width is selected as necessary. Then, barcodes may be input for input items (finish width, number of folds, number of peaks, ear width, etc.) other than the original width. By inputting a bar code in this manner, the bar code is accurate, correct, and efficient. In this case, in the normal setting, the bar width can be input with the original width.
Further, it goes without saying that other specific detailed structures can be appropriately changed.

[0052]

As described above, according to the curtain fold sewing automatic machine according to the first aspect of the present invention, the fold formation having the sewing machine, the curtain cloth front holding means, the fold folding means and the fold supply means is provided. In addition to the supply device, a rear end holding device that holds the rear end of the curtain fabric and moves in the front-rear direction, and an original width measuring device that measures the curtain fabric original width by moving backward, so that the curtain fabric The original width of the curtain fabric can be measured by the original width measuring device based on the amount of rearward movement of the rear end holding device holding the rear end.
Since the original width can be automatically measured in this way, automation of operations other than the cloth setting and data input excluding the original width can be realized. Therefore, it becomes particularly suitable for order curtain production, and a large improvement in productivity can be achieved. Further, according to the curtain fold sewing automatic machine according to the first aspect of the present invention, the sewing machine can be moved in the front-rear and left-right directions by the sewing machine moving device, and the fold can be sewn in a fixed state. By folding the next fold and waiting, the cycle time can be shortened, and the productivity can be further improved.

According to the automatic curtain fold sewing machine according to the second aspect of the present invention, while the fold portion is stationary at the sewn portion and the sewing machine is being moved while the sewing machine is being moved by one stitch at a time. , In the fold formation supply device,
Since the curtain fabric can be folded and then rotated to wait for insertion into the suturing portion, the cycle time can be shortened and the productivity can be improved, similarly to the effect obtained by the invention according to claim 1. Can be achieved.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a curtain fold sewing automatic machine as an example to which the present invention is applied.

FIG. 2 is an enlarged perspective view showing a sewing machine portion, a fold portion, and a front holding device portion in the automatic curtain fold sewing machine of FIG. 1;

FIG. 3 is an enlarged perspective view showing a cloth placing table, a holding device at a rear portion and an intermediate portion, and a guide device in the automatic curtain fold sewing machine shown in FIG. 1;

FIG. 4 is an enlarged front view showing an operation panel of the automatic curtain fold sewing machine shown in FIG. 1;

FIG. 5 is a perspective view showing an example of the sewing machine moving device.

FIG. 6 is a schematic plan view of an automatic curtain fold sewing machine according to the present invention.

FIG. 7 is a flowchart showing an example of automatic control by an automatic curtain fold sewing machine according to the embodiment of the present invention.

FIG. 8 is a flowchart showing a process subsequent to FIG. 7;

FIG. 9 is a flowchart showing a process following FIG. 8;

FIG. 10 is a perspective view showing a cloth front clamping state according to the embodiment of the present invention.

FIG. 11 shows folds of the fabric following FIG. 10;
(A) is a perspective view showing the case of three peaks, and (b) is a perspective view showing the case of two peaks.

FIG. 12 is a perspective view showing a state in which the cloth is adjusted at the intermediate portion following FIG. 11;

FIG. 13 is a perspective view showing the rotation operation of the folded part of the fabric following FIG.

FIG. 14 is a perspective view showing a state where the folded part of the fabric is inserted into the sewing machine, following FIG. 13;

FIG. 15 is a perspective view showing the retreat of the fold folding device from the fold portion of the fabric following FIG. 14;

FIG. 16 is a perspective view showing the rising of the holding pin from the folded part of the fabric, following FIG. 15;

FIG. 17 shows fold sewing following FIG. 16;
Is a plan view showing the case of fold stitching and mountain stitching, (b)
FIG. 4 is a plan view showing the case of fold stitching and reverse T-shaped stitching.

FIG. 18 is a perspective view showing a clamped state of a next fold part following thread trimming after the sewing of FIG. 17;

FIG. 19 is a perspective view showing a clamped state of a last fold.

FIGS. 20A and 20B illustrate a curtain terminology, wherein FIG. 20A is an upper front view in a fabric state, FIG. 20B is an upper front view after fold sewing, and FIG. 20C is an end view showing a difference in the number of mountains. (D) is an end view showing the height of the peak, and (e) is an end view showing the depth of the valley.

[Explanation of symbols]

 C Curtain cloth 1 Sewing machine 2 Crease forming and supplying device 3 Cloth placing table 4 Rear end holding device 5 Original width measuring device 6 Intermediate section adjusting device 7 Fabric feeding guide device 8 Needle plate 9 Cloth retainer 10 Closing needle 11 Operation panel 12 Front holding Means 13 fold folding means 14 fold supply means 15 space 16, 17 clamp plate 18, 19 fold plate 20 slide plate 21, 22 clamp plate 23 fabric holding down 24 clamp plate 25 guide case 26 belt conveyor 27 motor 33 fold sewing portion 34 Two-shape sewing part 35 Reverse T-shape sewing part 50 Sewing machine moving device

Claims (2)

[Claims] A sewing machine having sewing needles; front holding means for sequentially holding the curtain cloth from the front end side; fold folding means for folding the curtain cloth portion held by the front holding means; A crease forming / supplying device including a crease forming / supplying device having a crease supply unit for inserting the crease folded portion of the curtain fabric into the sewing portion of the sewing machine by integrally rotating the holding unit and the crease folding unit. A rear end holding device capable of holding the rear end of the curtain fabric and moving in the front-rear direction; and an original width measuring device capable of measuring the original width of the curtain fabric by moving the rear end holding device backward. And a sewing machine moving device capable of moving the sewing machine in the front-rear and left-right directions. 2. In the sewing portion of the sewing machine, the fold portion is kept stationary, and the sewing machine moves the sewing machine in the front-rear and left-right directions while performing sewing with the sewing needle. In the pleat forming / supplying device, the curtain cloth is held by the front holding means, the holding part is folded by the pleat folding means, and the folded part is rotated by the pleat supply means. 2. The curtain fold sewing automatic machine according to claim 1, wherein the machine waits for insertion into the sewn portion.