JP3159337B2 - Sewing equipment - Google Patents

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 sewing both upper and lower work cloths, and more particularly to a sewing apparatus in which the upper work cloth and the lower work cloth are aligned with each other and one work cloth is processed into the other work cloth. The present invention relates to a method in which both upper and lower work cloths are sewn to a cloth edge while squatting the cloth.

[0002]

2. Description of the Related Art Generally, when an athletic shoe made of a work cloth is produced, as an initial sewing operation, there is an overlap sewing in which an insole cloth and an upper cloth are overlapped and sewn. In order to sew the upper garment three-dimensionally on the insole, especially at the toe, the feed amount of the upper garment must be greater than that of the inner sole and the upper garment must be sewn. There is.

[0003] Conventionally, a sewing machine as shown in FIG. 39 has been put to practical use as a sewing apparatus for sewing such an insole cloth and an upper cloth. To briefly explain this sewing machine, an operation lever 203 is rotatably supported on a bed portion 201 by a stepped screw 204, and a middle plate 205 is fixed to a distal end portion of the operation lever 203. The tip of the intermediate plate 205 is moved between the presser foot 206 and the feed dog 207 during sewing, as shown in the figure. Then, on the needle plate 208, the insole cloth U of the athletic shoes is placed.
Bearing 20 for regulating the position of the cloth edge between W and the upper cloth DW
9 is rotatably supported. On the other hand, a cylinder 211 for operating the reverse rotation lever 210 is provided on the pillar 202.
Is installed.

[0004] When these two cloths UW and DW are superimposed and the toe portion is sewn to the cloth edge, first, the upper cloth D
W is set on the needle plate 208, the tip of the middle plate 205 is placed on the upper side thereof, the middle sole fabric UW is set on the upper side thereof, and a switch (not shown) is operated to operate the cylinder 21.
By the operation of 1, the reverse rotation lever 210 is pushed down. Then, the presser foot 206 is lowered to start sewing. Therefore, during the sewing operation, the operator holds the upper cloth DW and the insole cloth UW by hand and strongly in the forward direction (the direction opposite to the feed direction) so as not to loosen only the upper insole cloth UW. By pulling, only the upper DW is impregnated,
The toe portions of these cloths UW and DW can be three-dimensionally overlapped and sewn.

Japanese Utility Model Publication No. Sho 53-13532 discloses a differential cloth feed mechanism having a main feed dog and a sub feed dog.
A garment change mechanism is provided, and the upper fabric is set on the upper surface of the needle plate with the upper fabric on the lower side and the inner bottom fabric on the upper side, and a pressing piece is inserted between the upper fabric and the inner bottom fabric. ,
There is described a sewing apparatus in which only the insole cloth is soaked by strongly pulling only the insole cloth toward the front while grasping the upper cloth and the insole cloth by hand.

[0006]

However, FIG.
In any of the sewing machines shown in FIG. 9 and the sewing apparatus described in Japanese Utility Model Publication No. 53-13532, sewing is performed so that only the upper cloth is sewn while matching the cloth ends of the upper cloth and the inner bottom cloth. During the work, while grasping the upper cloth and the insole cloth by hand, pulling only the insole cloth in the forward direction and sewing the cloth along the edge of the cloth, it is highly skilled in this lap sewing work. In addition to the need, the operator has problems such as suffering from muscle pain in the hands, fingers and wrists.

Further, in order to make it easy to follow the cloth edge when performing overlap sewing, these sewing devices are provided with Japanese Patent Publication No. 54-32389 and Japanese Patent Publication No. 58-4.
It is conceivable to apply the cloth edge control device described in JP-A-8199. These cloth edge control devices are configured to set only one reference position for determining a deviation of the cloth edge position, and the cloth edge shape at the toe portion or the heel portion of the upper cloth or the insole cloth is Since it is composed of straight lines and a plurality of types of curves, a desired seam allowance can be obtained only when sewing an optimum straight line portion or a curved portion having a specific curvature radius at the reference position. However, when sewing a curved portion having a radius of curvature other than the above, the sewing margin varies according to the magnitude of the radius of curvature.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make one of the upper and lower work cloths coincide with the other work cloth while matching the cloth ends. It is an object of the present invention to provide a sewing apparatus which is adapted to automate overlapping stitching.

[0009]

In order to achieve the above object, a sewing apparatus according to claim 1 includes an upper work cloth and a lower work cloth which are sewn in an overlapping manner as shown in a functional block diagram of FIG. Upper feed means and lower feed means capable of feeding cloth independently, and upper work cloth moving means and lower work cloth capable of independently moving the upper work cloth and the lower work cloth in a direction orthogonal to the cloth feed direction. Moving means, the cloth end of the upper work cloth and the cloth end of the lower work cloth, the upper cloth end detection means and the lower cloth end detection means capable of detecting each independently, and data related to the relative feed of the upper and lower work cloths,
A feed storage means having stored in advance in association with the sewing position of the work cloth, the reference fabric edge position fabric edge should position the Oite <br/> both work cloth on the detection position for detecting at both fabric end detecting means The both working cloths
Cloth edge position data storage means stored in advance in association with the plurality of sewing positions above, sewing position detection means for detecting current sewing positions of both work cloths, output of the sewing position detection means,
First control means for controlling the upper feed means and the lower feed means based on the data of the feed storage means, the output of the sewing position detecting means, and the upper work cloth based on the data of the cloth end position data storage means; A moving means and a second control means for controlling the lower work cloth moving means are provided. In addition, the sending storage means,
As the data related to the relative feed, the data of the cloth feed ratio of the feed amount of the lower work cloth to the feed amount of the upper work cloth may be stored.

[0010]

In the sewing apparatus according to the first aspect having the above-described configuration, data relating to the relative feed of the upper and lower work cloths is stored in advance in the feed storage unit in association with the sewing position of the work cloth. the fabric edge position data storage means, reference fabric edge position fabric edge should position the Oite upper and lower workpiece cloth to the detection position for detecting at upper and lower fabric end detecting means, double on both the fabric
Since the first control means is stored in advance in association with the number of sewing positions, the first control means determines whether the upper feed means and the lower feed means are present based on the output of the current sewing position from the sewing position detection means and the data of the feed storage means. Control the feeding means. Furthermore, at the same time, the second
The control means, based on the output from the sewing position detecting means, the output from the upper and lower cloth edge detecting means, and the data in the cloth edge position data storage means, sets a reference value corresponding to the sewing position of the work cloth to the sewing position. The upper work cloth moving means and the lower work cloth moving means are controlled so as to match the cloth end position, and the cloth end position is moved in a direction orthogonal to the cloth feed direction.

[0011] Thus, the upper and lower work cloth, for the fabric edge position deviation of the cloth end position such that the reference cloth end position is eliminated, respectively, yet one work cloth other work cloth,
Since the cloth is fed according to the value related to the relative feed corresponding to the current sewing position, automation of the overlap sewing that matches the ends of the upper and lower work cloths and irrigates one of the work cloths Can be achieved. Further, for both upper and lower work cloths, the reference cloth end position corresponding to the current sewing position according to the progress of the sewing process is sequentially changed and set, and the deviation of the cloth end position is determined based on the changed set reference cloth end position. Since it is moved so as to eliminate, even if the cloth edge shape is a complex shape including multiple types of curves and straight lines with different radii of curvature,
A predetermined sewing allowance can always be secured, and profile sewing can be performed with good appearance.

[0012]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, the present invention is applied to a sewing apparatus provided with an industrial lockstitch sewing machine. This sewing device SM is used to create athletic shoes made of work cloth.
The cloth bottom is used as the upper cloth and the upper cloth is used as the lower cloth, and the cloth ends are sewn while being sewn, and basically comprise a lockstitch sewing machine M and a cloth end control device 15. First, the lockstitch sewing machine M will be described first. Since the sewing machine M is the same as a general industrial lockstitch sewing machine, it will be briefly described. As shown in FIG. 2, the lockstitch sewing machine M is mounted on a work table T, and has a sewing machine bed portion 1, a pillar portion 2 erected from the right end of the bed portion 1, and a pillar portion thereof. 2 and an arm 3 extending leftward so as to face the bed 1. The bed section 1 is provided with a feed dog vertical movement mechanism (not shown) for vertically moving the lower feed tooth 8, a feed dog forward / backward movement mechanism (not shown) for moving the lower feed tooth 8 back and forth, a thread wheel catcher (not shown), and the like. ing.

The arm 3 has a needle bar drive mechanism for vertically moving a needle bar (not shown) on which a sewing needle 4 (see FIG. 17) can be attached at the lower end, and a balance (not shown) for moving the needle bar up and down. A balance driving mechanism (not shown) that moves up and down in synchronization with movement is provided. A presser bar is supported on the sewing machine frame F on the rear side of the needle bar so as to be vertically movable, and a presser foot 6 (see FIG. 3) is attached to a lower end of the presser bar. by the way,
This presser bar and the upper feed dog 7 for feeding the inner bottom cloth UW by the cloth
(See FIG. 4) is a solenoid 159 for driving a presser foot described below.
(See FIG. 20). The presser bar and the upper feed dog 7 are switched to the retracted position raised by driving the presser foot driving solenoid 159 (see FIG. 20), and the solenoid 159 is driven. Is stopped, the position is switched to the lowered operation position.

Accordingly, the feed dog vertical movement mechanism of the lower feed dog 8 and the upper feed dog 7, the needle bar drive mechanism and the balance drive mechanism are driven by the sewing machine motor 140. In addition, lower feed dog 8
Is driven forward and backward via a feed dog longitudinal movement mechanism at a feed amount corresponding to the inclination of the feed controller which is changed by the drive amount of the linear solenoid 161 (see FIG. 20). Furthermore, the upper feed dog 7
Is an upper feed dog motor 16 composed of a stepping motor.
It is driven back and forth via the feed dog longitudinal movement mechanism at a feed amount corresponding to the inclination of the feed controller which is changed by the rotation amount of 0 (see FIG. 20). A sewing machine motor 140 is disposed immediately below the work table T, and is attached to the work table 9 that supports the work table T. An operation panel 10 is attached to the lockstitch sewing machine M, and the operation panel 10 is provided with a plurality of operation switches required for a sewing operation.

The cloth end control device 15 basically includes a cloth receiving plate driving device 16 and an upper cloth moving device 17 provided between the bed portion 1 and the arm portion 3 and a lower portion of the bed portion 1. A lower cloth moving device 18 provided on the side and an auxiliary upper cloth moving device 19 for controlling the position of the insole cloth UW in an auxiliary manner are provided. First, the lower cloth moving device 18 is provided between the insole cloth UW and the upper cloth DW. The cloth receiving plate driving device 16 for driving the cloth receiving plate 32 for supporting both the cloths UW and DW will be described with reference to FIGS. A substantially rectangular base plate 25 is fixed on the bed portion 1, and a band-shaped linear cross bearing 26 extending in the left-right direction is attached to the front end of the upper surface of the base plate 25.
A cloth receiving table 27 made of a substantially rectangular plate material is mounted on 6 so as to be movable in the left-right direction.

A cloth receiving table switching cylinder 143 disposed in front of the cloth receiving table 27 in the left-right direction.
Is fixed to the base plate 25 by a bracket 28, and the tip of the piston rod 143 a of the cylinder 143 is connected to a drive lever 29 fixed to the cloth receiving base 27. Therefore, the cloth receiving table 27 is moved to the left by the forward movement of the cloth receiving table switching cylinder 143 to the left sewing position shown by the solid line in FIG. 3, and is moved right by the retreat driving to the right by the two-dot chain line. The position is switched to the position.

On the other hand, on the cloth receiving table 27, a substantially inverted L
The lower end of the V-shaped mounting plate 30 is screwed. A twin rod type cloth receiving plate vertical drive cylinder 144 is mounted on the mounting plate 30 in a downward direction.
4, a cloth receiving plate mounting plate 31 is fixed to the lower end portions of the pair of piston rods 144a. The lower surface of the cloth receiving plate mounting plate 31, as shown in FIG. The base end of the cloth receiving plate 32 is screwed. As shown in FIG. 7, the tip of the cloth receiving plate 32 extends to the left through the sliding plate 12 via the semicircular needle plate 11. Here, the bolt 33 (see FIG. 5) attached to the lower side of the cylinder 144 is for height adjustment for restricting the rising position of the cloth receiving plate attaching plate 31. Therefore, the cloth receiving plate 32 is provided with a cloth receiving plate vertical drive cylinder 144.
The position is switched between a lower sewing position shown by a solid line in FIG. 5 by the downward advance drive and an upper retract position shown by the two-dot chain line by the upward retreat drive. Further, as described above, the cloth receiving plate 32 is moved to the right retreat position at the same time when the cloth receiving table 27 moves to the retreat position.

Next, the upper cloth moving device 17 will be described with reference to FIG.
This will be described with reference to FIGS. The base plate 25
A strip-shaped linear cross bearing 40 extending in the left-right direction is mounted on the upper surface of the rear side of the cloth receiving table 27. A movable table 41 made of a substantially rectangular plate material is movable on the linear cross bearing 40 in the left-right direction. It is placed. The base end of the carriage switching cylinder 145 disposed in the left-right direction immediately behind the carriage 41 is connected to the base plate 2.
5, pivotally supported by a support bracket 42 via a support bracket 42,
The distal end of the piston rod 145 a of the cylinder 145 is connected to a drive lever 43 fixed to the moving table 41. Accordingly, the movable platform 41 is moved to the left sewing position shown by the solid line in FIG. 3 by the advance driving of the movable platform switching cylinder 145 to the left, and to the right retracted position shown by the two-dot chain line by the retracting drive to the right. Is switched.

As shown in FIGS. 4 and 6, an L-shaped block member 44 in side view is fixed on the movable table 41.
It consists of a stepping motor and moves the midsole cloth UW in the cloth feeding direction Q.
An upper cloth moving motor 141 for moving the upper cloth moving motor 141 in a direction (horizontal direction) orthogonal to the above is attached to the vertical wall portion 44a of the block member 44 from the rear side, and a timing pulley is attached to the drive shaft 141a of the upper cloth moving motor 141. 45 is fixed. A cylindrical bush 46 is fixed to the vertical wall portion 44a, and a cylindrical first pivotal support member 47 having a flange portion is fitted into the bush 46. The front end surface of the flange portion is The first pivotal support member 4 is brought into contact with the rear end face.
7 is retained.

A first swing arm 49 made of a plate-like plate material disposed immediately behind the flange of the first pivotal support member 47 is screwed to the flange and a spacer 48 is provided.
The bush 46 is in contact with the bush 46. Then, the first swing arm 49 has a mounting portion 4 in which a part thereof projects upward.
A distal end of a piston rod 146a of an arm rotation cylinder 146 rotatably supported by a support member 50 attached to the moving table 41 is rotatably connected to 9a.
Further, a second pivoting member 51 which is disposed on the front side of the timing pulley 45 and has a flange portion is externally fitted to the drive shaft 141 a and pivots around a pivoting member 53 fixed to the moving table 41. It is pivoted as much as possible. The second pivotal support member 51 is formed of a plate-shaped plate material disposed immediately in front of the flange portion.
The swing arm 54 is screwed to the flange, and is in contact with the pivot support member 53 via the spacer 52.

The first swing arm 49 and the second swing arm 54 are integrally connected by a pair of connecting members 55, and a screw 5 is attached to the tip of the first and second swing arms 49 and 54.
The timing pulley 58 is rotatably supported by a pair of pivot members 57 fixed at 6 respectively, and a timing belt 59 is stretched between the timing pulleys 45. Also, the first and second swing arms 49 and 54
In the first embodiment, a pair of bolts 60 fixed to the block member 44 are brought into contact with the upper and lower sides of the connecting member 55 to restrict the rotation range. As shown in FIG. 6, a pair of tension pulleys 61 for applying a tension to the timing belt 59 are pivotally mounted inside the swing arms 49 and 54.

Accordingly, the timing pulleys 45 and 58 are driven by the forward rotation drive or the reverse rotation drive of the upper cloth moving motor 141.
, The timing belt 59 is rotated forward or backward, and the insole cloth UW disposed below the timing belt 59 is moved leftward or rightward. Furthermore, both swing arms 49.5
The position 4 is switched between a sewing rotation position indicated by a solid line in FIG. 6 by driving the arm rotation cylinder 146 to the left and a retracting rotation position indicated by a two-dot chain line by retreating to the right. . Here, both swing arms 49 and 54 are switched to the retracted rotation position and the left sewing position, and the cloth receiving plate 32
The upper cloth DW can be placed on the upper side of the needle plate 11 when the position is switched to the upper retreat position and the left sewing position.

Next, the insole cloth U
A separation plate driving mechanism 65 for driving the separation plate 66 for accurately and independently performing the W cloth feeding and the upper cloth DW cloth feeding will be described with reference to FIGS. 4 and 8 to 10.
The separating plate 66 is plate-shaped and has a crank shape in a plan view. The separating plate 66 is located between the needle plate 11 and the cloth receiving plate 32, and has a tip portion between the lower feed dog 8 and the upper feed dog 7. The mounting member 67 is screwed to the left end of the mounting member 67. On the other hand, FIG.
As shown in FIG. 10, the cloth receiving plate mounting plate 31 has L
The L-shaped mounting member 68 is fixed.
The front and rear drive cylinder 147 of the separation plate is attached to an L-shaped attachment 69 fixed to the tip of a piston rod 147 a of the cylinder 147. That is, the separation plate 66 is connected to the piston rod 147a via the attachment member 67 and the L-shaped attachment 69.

Therefore, the separation plate 66 is moved to a rear sewing position shown by a solid line in FIG. 8 by driving the separation plate front / rear drive cylinder 147 backward, and to a forward retreat position shown by a two-dot chain line by a forward retreat driving. Is switched. Moreover, since the separating plate 66 is attached to the cloth receiving plate attaching plate 31 via the separating plate front / rear drive cylinder 147 and the L-shaped attaching member 68, the separating plate 66 is simultaneously moved to the raised retracted position. It is moved to the upper evacuation position.

Next, the lower cloth moving device 18 for moving the upper cloth DW in the left-right direction will be described with reference to FIGS. A lower shaft 13 (see FIG. 2) extending in the left-right direction is provided in the bed portion 1.
A rotary hook 75 is connected to the left end of the rotary hook 75, and a bobbin case 76 is housed in the rotary hook 75. An oil pan 77 is provided below the work table T so as to cover the rotary hook 75. A plate-like support frame 78 extending downward is attached to the lower side of the oil pan 77,
The cylinder 148 for driving the lower cloth moving mechanism 80 up and down, which is a rodless type lower cloth driving cylinder 148 of a magnet type, is attached to the support frame 78 with its upper end inclined rightward. . Therefore, the lower cloth moving mechanism 8
The position 0 is switched between an upper sewing position indicated by a solid line in FIG. 11 by the upward advance driving of the lower cloth driving cylinder 148 and a lower retracted position indicated by a two-dot chain line by the downward retreat driving.

Next, the lower cloth moving mechanism 80 connected to the movable portion 148a of the lower cloth driving cylinder 148 will be described. A lower cloth moving motor 142 composed of a stepping motor for moving the upper cloth DW in the left-right direction is fixed to the movable portion 148a, and a lower end of a substantially trapezoidal support plate 81 in front view is screwed. ing. Further, a spacer 82 is provided at an upper end portion of the support plate 81.
The lower end of the support lever 83 is connected to the upper end of the support lever 83, and a pair of pivot members 85 and 86 are screwed to the upper end of the support lever 83 via a spacer 84. Further, the pair of pivot members 85 A lower cloth feed roller 87 which is partially tapered is rotatably supported by a pin 88 at the upper end of the 86.

The pulley 8 fixed to the lower cloth feed roller 87 and the drive shaft 142a of the lower cloth moving motor 142.
9, a timing belt 90 is stretched. Accordingly, the lower cloth feed roller 87 is rotated forward or reverse through the pulley 89 and the timing belt 90 by the normal rotation drive or the reverse rotation drive of the lower cloth moving motor 142, and the upper cloth arranged above the timing belt 90 is rotated. DW is moved left or right. Here, as shown in FIG. 13, when the lower cloth moving mechanism 80 is switched to the upper sewing position,
The lower cloth feed roller 87 rises through the rectangular notch 11a formed in the slide plate 11 until it is exposed directly below the cloth receiving plate 32, so that the bobbin outlet 77a formed in the oil pan 77 is The lower cloth moving mechanism 80 covers the lower cloth. However, when the position of the lower cloth moving mechanism 80 is switched to the lower retreat position, the lower cloth feed roller 87 moves down to the lower side of the oil pan 77, and in this state, the operator operates the bobbin ejection port. The bobbin case 76 can be taken out via 77a.

Next, an upper cloth edge detecting mechanism (corresponding to the upper cloth edge detecting means of the present invention) for detecting the cloth edge position of the insole cloth UW 9
5 will be described with reference to FIGS. 8 to 10, 17 and 18. Above the cloth receiving plate 32 corresponding to the needle plate 11, a sensor mounting block 96 having a substantially rectangular shape in a plan view is disposed, and is screwed to the cloth receiving plate 32. At the left end portion of the sensor mounting block 96, as shown in FIGS. 17 and 18, a sensor housing portion 96a is formed in which a lower half portion is cut out to set the insole fabric UW. An upper cloth edge detection sensor 97 formed of a prism is housed in the housing portion 96a such that a lower portion thereof faces the lower side of the sensor housing portion 96a. That is, the upper cloth edge detection sensor 97 is provided upstream of the sewing needle 4 in the cloth feeding direction Q.

As shown in FIG. 18, the upper cloth edge detection sensor 97 is a right angle prism having a vertical angle of 90 °.
It is composed of a combination of a prism 98 and a second prism 99, and one end face of the first prism 98 and the second prism 99
And the second prism 99 is disposed orthogonal to the cloth edge. Then, the first prism 9
8 has a fiber diameter of about 0.
The distal end surfaces of an upper fabric fiber group FA including ten optical fibers A1 to A10 each having a length of 5 mm are connected in a row. Further, at the base end of the optical fibers A1 to A10, ten light emitting elements OSU1 to OSU10 such as light emitting diodes are provided in association with each other via half mirrors HM1 to HM10, and ten light emitting elements such as phototransistors are provided. Of light receiving elements ISU1 to ISU10 are provided.

Accordingly, each of the detection lights such as the laser light projected from each of the light emitting elements OSU1 to OSU10 passes through the half mirrors HM1 to HM10 and passes through these optical fibers A1 to A10.
The light enters the first prism 98 via A10, is totally reflected at right angles to the second prism 99 side, is further totally reflected at right angles downward by the second prism 99, and is located at the lower side from the second prism 99. The light is projected from a direction substantially orthogonal to the cloth UW or the cloth receiving plate 32. Then, the reflected light reflected by the midsole cloth UW or the cloth receiving plate 32 is transmitted to the second prism 99 and the first prism 9.
8 and are reflected by the half mirrors HM1 to HM10 via the same optical fibers A1 to A10 at the time of projection, respectively, and the reflected lights are received by the light receiving elements ISU1 to ISU10, respectively. That is, the detection light is projected from the front end side of the ten optical fibers A1 to A10 in a dot array crossing the cloth end of the midsole cloth UW via the prisms 98 and 99, and the midsole cloth UW is reflected from the reflected light. Can be detected. Here, the amount of light received by the light receiving elements ISU1 to ISU10 is larger when the light is reflected by the cloth receiving plate 32 than when the light is reflected by the midsole cloth UW.

Next, a lower cloth edge detecting mechanism (corresponding to lower cloth edge detecting means) 100 for detecting the cloth edge position of the upper cloth DW will be described with reference to FIGS. 4, 7, 14, 15, 15, 17, and 17. This will be described with reference to FIG. On the base plate 25 corresponding to the lower side of the upper cloth moving motor 141, the sensor support plate 10
1, a connecting plate 102 is attached below the left end of the sensor supporting plate 101. Needle plate 1
1, a substantially U-shaped notch 11b is formed in a plan view, and a sensor mounting block 103 having a substantially crank shape in a plan view and a side view is fixed to a front end portion of the connecting plate 102. The stepped portion 103 is located in the notch 11b.

A lower cloth edge detection sensor 104 composed of a prism is accommodated in a sensor accommodation section 103a long in the left-right direction at the front end of the sensor mounting block 103 so that the upper part thereof faces the upper side of the sensor accommodation section 103a. I have. That is, the lower cloth edge detection sensor 104 is provided substantially opposite to the upper cloth edge detection sensor 97 and on the upstream side of the sewing needle 4 in the cloth feeding direction Q. This lower cloth edge detection sensor 104
As shown in FIG. 19, the first prism 105 and the second prism 106 are a combination of a first prism 105 and a second prism 106, each of which is a right-angle prism having a vertical angle of 90 °. One end face is stuck,
The second prism 106 is arranged orthogonal to the cloth edge.
On the right end face (light ray input face) of the first prism 105, the tip end faces of a lower cloth fiber group FB composed of ten optical fibers B1 to B10 having a fiber diameter of about 0.5 mm are arranged in a line. It is connected. Further, half mirrors HM11 to HM11 are provided at the base ends of the optical fibers B1 to B10.
Ten light emitting elements OSD1 to OSD10 such as light emitting diodes are provided in association with each other via M20,
10 light receiving elements ISD1 consisting of phototransistors
~ ISD10.

Accordingly, each of the detection lights such as the laser light projected from each of the light-emitting elements OSD1 to OSD10 passes through the half mirrors HM11 to HM20 and passes through the optical fibers B1 to B2.
10, the light enters the first prism 105, is totally reflected at right angles to the second prism 106, and is further reflected by the second prism 106.
And is totally reflected upward at right angles, and is projected from the second prism 106 from a direction substantially orthogonal to the upper cloth DW or the cloth receiving plate 32 located above. Then, the reflected light reflected by the upper cloth DW or the cloth receiving plate 32 is totally reflected by the second prism 106 and the first prism 105, respectively, and passes through the same optical fibers B1 to B10 at the time of the projection, and the half mirrors HM11 to HM.
The reflected light is received by the light receiving elements ISD1 to ISD10. That is, the detection light is projected in the form of a row of dots intersecting the cloth end of the upper cloth DW from the distal ends of the ten optical fibers B1 to B10 via both prisms 105 and 106,
The cloth edge position of the upper cloth DW can be detected from the reflected light. Here, the amount of light received by the light receiving elements ISD1 to ISD10 is larger when the light is reflected by the cloth receiving plate 32 than when the light is reflected by the upper cloth DW.

By the way, as shown in FIGS. 7, 14, and 15, immediately on the right side of the needle hole 11c formed in the needle plate 11, the cloth end positions of the insole cloth UW and the upper cloth DW are regulated respectively. The control wheel 110 for arranging is provided.
A base end portion is fixed to the connection plate 102 and is rotatably pivotally attached to a front end portion of a holding member 111 extending leftward. Next, the auxiliary upper cloth moving device 19 will be described with reference to FIGS. At the left end of the work table T, a pivotal support member 115 is erected, and a pivoting plate 116 is pivotally supported by the pivotal support member 115 with a bolt 117. A twin rod type auxiliary upper cloth support cylinder 149 is attached to the portion in a state of lowering to the right.

A cylinder mounting member 1 is attached to the tip of the piston rod 149a of the auxiliary upper cloth support cylinder 149.
An auxiliary upper cloth pressing cylinder 150 is mounted on the cylinder mounting member 118 to the right.
Further, an auxiliary cloth receiving member 119 having an L-shape in a front view is attached to a distal end portion of the piston rod 150a of the auxiliary upper cloth pressing cylinder 150. Therefore, as shown in FIG. 16, the auxiliary cloth receiving member 119 is
The right side sewing position shown by the solid line in FIG. 16 by the rightward drive of 49, and the two-dot chain line in FIG. 16 by the retreat driving of the auxiliary upper cloth support cylinder 149 to the left (in FIG. 2 by the solid line). (Shown) to the left retreat position. Further, when the position of the auxiliary cloth receiving member 119 is switched to the right sewing position and the positions of both the swing arms 49 and 54 are switched to the evacuation rotation positions, the auxiliary upper cloth pressing cylinder 150 is driven to advance. In some cases, the timing belt 59 and the right end of the auxiliary cloth receiving member 119 can support the insole cloth UW disposed in the vertical direction in an auxiliary manner. Here, the bolt support member 1 screwed to the pivot member 115
The bolt 121 screwed to 20 adjusts the inclination of the auxiliary upper cloth support cylinder 149.

Next, the control system of the sewing apparatus SM is configured as shown in the block diagram of FIG. The input / output interface 185 of the control device C includes a program switch 130, a program correction switch 131, a sewing preparation switch 132, a sewing start switch 133, an operation switch 134, and a release switch 13 provided on the operation panel 10.
5, a numeric keypad 136, a set switch 137, and a needle position signal generator 138 for detecting the rotational phase of the main shaft of the sewing machine provided in the arm unit 3 and outputting a needle position signal corresponding to the movement position of the needle bar, respectively. It is connected.

The input / output interface 185 further includes a driving circuit 170 for the sewing machine motor 140, a driving circuit 171 for the upper cloth moving motor 141, a driving circuit 172 for the lower cloth moving motor 142, and a cloth receiver. A driving circuit 173 for an electromagnetic switching valve 151 for driving the table switching cylinder 143, a driving circuit 174 for an electromagnetic switching valve 152 for driving the cloth receiving plate vertical driving cylinder 144, and an electromagnetic switching valve for driving the moving table switching cylinder 145. A drive circuit 175 for the solenoid valve 153, a drive circuit 176 for the electromagnetic switching valve 154 for driving the arm rotation cylinder 146, a drive circuit 177 for the electromagnetic switching valve 155 for driving the front and rear drive cylinder 147 for the separation plate, and a lower cloth drive Circuit 178 for the electromagnetic switching valve 156 for driving the cylinder 148 for use, the auxiliary upper cloth support cylinder 14 Circuit 179 for an electromagnetic switching valve 157 for driving the actuator, a driving circuit 180 for an electromagnetic switching valve 158 for driving the auxiliary upper cloth pressing cylinder 150, a driving circuit 181 for a solenoid 159 for driving the presser foot, and an upper feed dog. A drive circuit 182 for the motor 160 and a drive circuit 183 for the linear solenoid 161 are connected to each other.

The control device C includes a controller 165 for the upper cloth.
, Lower cloth controller 166 and main CPU 187
And a bus 1 such as a data bus
Input / output interface 18 connected via
5, a ROM 188 and a RAM 189. The upper cloth controller 165 is for controlling the detection of the cloth edge position of the midsole cloth UW, and is connected to the input / output interface 185 and the light emitting elements OSU1 to OSU10 for detecting the cloth edge of the midsole cloth UW. And light receiving elements ISU1 to ISU10
Is connected. Also, the lower cloth controller 166 is used.
Is for controlling the detection of the cloth edge position and the notch of the upper cloth DW.
The light emitting elements OSD1 to OSD10 and the light receiving elements ISD1 to ISD10 for detecting the cloth edge of the upper cloth DW are connected. Various switches 130 to 13 are stored in the ROM 188.
7, a drive control program for driving the motors 140 to 142 and the electromagnetic switching valves 151 to 158, respectively, and a control program for cloth end alignment and garment sewing control, which will be described later, are stored. RAM 189 contains C
Various memories such as a buffer, a counter, and a pointer for temporarily storing the calculation result calculated by the PU 187 are provided.

Next, the routine of the cloth edge alignment and garment sewing control executed by the controller C of the sewing apparatus SM will be described.
A description will be given based on the flowcharts of FIGS.
Note that reference numerals Si (i = 10, 11, 12,...) In the figure indicate each step. When the sewing machine SM is turned on, this control is started. First, each memory of the RAM 189 is cleared and each of the electromagnetic switching valves 151 to 158 is cleared.
, Each of the cylinders 143 to 150 is switched to the retracted position in a predetermined order and driven. In addition, since the presser foot driving solenoid 159 is driven, a series of initial setting processes such as the presser bar and the upper feed dog 7 being moved to the raised retreat position are executed (S10). That is, as a result of the execution of the initial setting processing, the upper cloth DW and the middle sole cloth UW can be placed on the needle plate 11.

Next, when the program switch 130 of the operation panel 10 is operated (S11 / S12: Ye)
s) Sewing parameter setting processing control (see FIG. 22) for the insole cloth UW and upper cloth DW to be sewn is executed (S13). When this control is started, first, the ten key 1
The desired program number is input and set by operating the key 36 (S25), and the number D of sewing sections from the sewing start position to the sewing end position is input and set for the insole cloth UW (S26). Here, in the sewing section, a sewing range in which the radius of curvature is the same in the cloth edge shape of the insole cloth UW is defined as a sewing section. For example, as shown in FIG. 27, in the cloth edge shape from the sewing start position to the sewing end position of the insole cloth UW, the sewing ranges having the same curvature radius are sequentially sewn in the sewing sections 1, 2.
Sewing section 2, sewing section 3,... Are set, and the number D of the sewing sections is input by operating the ten keys 136.

Next, an initial value "1" is set as the counter value Dn of the sewing section counter provided in the RAM 189 (S27), and the number of stitches Pn to be sewn and the cloth edge position at that time are set for this sewing section Dn. The reference optical fiber number As of the corresponding upper cloth fiber group FA is input, and by operating the set key 137, the number of stitches Pn and the reference optical fiber number As are associated with the sewing section Dn in the RAM 189.
(S28). Next, the sewing section count value Dn is incremented by one (S2).
9) When this counter value Dn is equal to or less than the number of sewing sections D (S30: No), S28 to S30 are repeated.

When the counter value Dn is greater than the number of sewing sections D (S30: Yes), the number of sewing sections E of the set upper cloth DW is set to the upper cloth DW in the same manner as the above-mentioned middle sole cloth UW. , The number of stitches Pn to be sewn and the reference optical fiber number Bs of the lower fabric fiber group FB corresponding to the cloth end position at that time are input, and each time the set key 137 is operated, the number of stitches Pn
And the reference optical fiber number Bs are stored in the work memory of the RAM 189 in association with the sewing section En (S31).
~ S35). The number of stitches P for all sewing sections E
n and the reference optical fiber number Bs are set (S3
5: Yes) Then, regarding the upper cloth DW, the notch number and the shirring section are input in correspondence with the sewing section En (S36), and the shirring ratio α to the feed amount of the insole cloth UW is further changed to the notch number. (S37), and
After ending this control, the process returns to S11 of the cloth edge alignment / garment sewing control shown in FIG.

[0043] Thus, the table memory of the RAM189, for example, as shown in FIG. 29, with respect to the insole cloth UW, for each sewing section Dn, detection position for the cloth edge detection
The upper cloth parameter table PTU in which the reference optical fiber number As corresponding to the reference cloth end position where the cloth end should be located and the number of stitches Pn are stored. FIG. 28
Similarly, for the upper cloth DW shown in FIG. 30, as shown in FIG. 30, for each sewing section En, the notch number, the shirring section, the shirring ratio α, and the detection position where the cloth edge detection is performed.
The lower cloth parameter table PTD in which the reference optical fiber number Bs corresponding to the reference cloth end position where the cloth end should be located and the number of stitches Pn are stored. In the upper cloth DW shown in FIG. 28, the seaming is performed from the first notch sewing section to the third notch sewing section. here,
The squatting is to give fine gathers to one work cloth by making the cloth feed amount of one work cloth (upper cloth DW) larger than the feed amount of the other (middle bottom cloth UW). By the stitching, both of these work cloths can be sewn three-dimensionally.

Next, when the program correction switch is operated (S11: Yes, S12: No, S14:
Yes), the number of the program to be corrected is numeric keypad 136
Is operated (S15), and for the contents of the program number, a correction process for sequentially correcting the number of stitches Pn and the reference optical fiber numbers As and Bs corresponding to the cloth edge positions is executed (S16), and the process returns to S11. .

Next, when the sewing preparation switch 132 is operated (S11: Yes, S12 / S14: No,
S17: Yes), sewing preparation process control (see FIG. 23) is executed (S18). This control is started, and when the operation switch 134 is operated first (S40 / S41:
Yes), based on the flag data of the flag memory provided in the RAM 189, when the first operation flag 1MF is not set, that is, when each of the cylinders 143 to 150 is driven to the retreat position (S42: N
o) First, the cloth receiving table switching cylinder 143 is driven forward (S43), and further, the movable table switching cylinder 145 is driven forward (S44), the first operation flag 1MF is set (S45), and the process returns to S40. Accordingly, the position is switched to the left sewing position while both swing arms 49 and 54 are held at the retracted rotation position, and the position is switched to the left sewing position while the cloth receiving plate 32 is held at the upper retracted position. . At this time, as shown in FIG. 9, the cloth end position of the upper cloth DW is brought into contact with the regulating wheel 110 from the left side, and the sewing start position is matched with the needle drop position. It is set on the upper side and below the cloth receiving plate 32.

Next, when the operation switch 134 is operated again (S40 / S41: Yes), the first operation flag 1MF is set (S42: Yes), but the second operation flag 1MF is set.
If the operation flag 2MF has been reset (S4
6: No), first, the cloth receiving plate vertical drive cylinder 144 is driven forward (S47), and then the separation plate longitudinal drive cylinder 1
47 is driven to advance (S48). Further, the lower cloth driving cylinder 148 is advanced (S49), the second operation flag 2MF is set (S50), and the process returns to S40.
Therefore, the cloth receiving plate 32 is switched to the lower sewing position while the cloth receiving plate 32 is held at the left sewing position, the separation plate 66 is switched to the rear sewing position, and the lower cloth moving mechanism 80 is switched to the upper sewing position. The upper cloth DW is pressed and held by the cloth receiving plate 32 by the upper end of the belt 90 and the lower cloth feed roller 87.

At this time, as shown in FIG. 9, the fabric edge of the insole fabric UW is brought into contact with the regulation wheel 110 from the left while the fabric edge is matched with the fabric edge of the upper fabric DW, and The sewing start position is set on the cloth receiving plate 32 so as to match the needle drop position. Thereafter, when the operation switch 134 is operated again (S40 / S41: Yes), the first operation flag 1MF and the second operation flag 2MF are set (S42 / S46: Yes), but the third operation flag is set. If 3MF is not set (S55: N
o), the arm rotation cylinder 146 is driven to advance (S
56), the third operation flag 3MF is set (S5).
7) Return to S40. Therefore, both swing arms 49
54 is switched to the sewing rotation position, and the timing belt 5
At the lower end of 9, the midsole cloth UW is pressed and held by the cloth receiving plate 32.

Further, when the operation switch 134 is operated again (S40 / S41: Yes), if the first, second and third operation flags 1MF, 2MF and 3MF are set respectively (S42 / S41). S46 / S55: Yes),
The driving of the presser foot driving solenoid 150 is stopped (S5).
8) Then, the position of the presser foot 6 and the upper feed dog 7 is switched to the presser position, and this control is ended. Then, the process returns to S11 of the cloth edge alignment / garment sewing control shown in FIG. However, when the release switch 135 is operated before the driving of the presser foot driving solenoid 150 is stopped (S40: Ye
s, S41: No, S51: Yes), when the second operation flag 2MF or the third operation flag 3MF is set (S52: Yes), the cylinders 144. 146-14
8 are sequentially driven in a predetermined order (S53).
The two operation flags 2MF and 3MF are respectively reset (S5
4) Return to S40. As a result, resetting from the upper cloth DW becomes possible.

Next, when the sewing start switch 133 is operated (S11: Yes, S12, S14, S1)
7: No, S19: Yes), sewing process control (see FIG. 24) is executed (S20). When this control is started, first, a count value p for counting the number of stitches P and a notch count value q for counting the number of notches are respectively reset (S60), and the sewing machine motor 140 is driven (S60).
61). Therefore, the cloth feed operation is performed so that the upper feed tooth 7 and the lower feed tooth 8 have the cloth feed amount set in advance, and the cloth edge alignment sewing of the middle bottom cloth UW and the upper cloth DW is started. You.

Next, the shirring ratio α corresponding to the current sewing position is read out based on the notch count value q and the lower cloth parameter table PTD (S62), and based on the shirring ratio α, the linear solenoid 161 is read. Is driven (S63). The driving amount at this time is the upper feed dog motor 1
The lower feed amount is calculated by multiplying the upper feed amount obtained from the rotation amount of 60 by the shirring ratio α, and is determined corresponding to the lower feed amount. As a result, this linear solenoid 161
Is changed, and the lower feed dog 8 is driven back and forth by a feed amount corresponding to the tilt of the feed controller. That is, the feed amount of the upper cloth DW becomes larger than the feed amount of the midsole cloth UW based on the shirring ratio α. However, the upper feed dog 7 is moved by a cloth feed amount set in advance. Next, based on the needle position signal from the needle position signal generator 138, at the time of the cloth feeding start timing (S64: Y
es) The upper cloth controller 165 and the lower cloth controller 166 are instructed to execute cloth edge position / notch detection processing control (S65).

Next, based on the needle number count value p, the upper cloth parameter table PTU and the lower cloth parameter table PTD, the current sewing position, that is, the current sewing section number D
n · En are obtained (S66), the reference optical fiber number As corresponding to the sewing section number Dn is read from the upper cloth parameter table PTU, and the sewing section number En corresponding to the lower cloth parameter table PTD is read. The reference optical fiber number Bs is read (S6
7) The standby state is continued until the cloth edge position / notch detection processing in both controllers 165 and 166 is completed (S68: No).

Here, a routine of the cloth edge position / notch detection control of the insole cloth UW executed by the upper cloth controller 165 based on the execution instruction of the cloth edge position / notch detection processing control will be described with reference to FIG. This will be described with reference to a flowchart. When this control is started, first, an initial value “1” is set as the count value s of the detection cycle counter and the count value f of the optical fiber counter (S85), respectively.
The upper fabric light emitting element OSUn indicated by the optical fiber count value f is turned on (S86). As a result, as described above, the detection light projected from the light-emitting element OSUn passes through the first prism 98 and the second prism 99 via the optical fiber An corresponding to the light-emitting element OSUn, and passes through the inner bottom cloth UW or cloth. The light reflected by the receiving plate 32 is reflected by the half mirror HMn through the same optical fiber An, and is received by the light receiving element ISUn corresponding to the light emitting element OSUn. Then, a light receiving value r (digital value) based on the amount of light received by the upper cloth light receiving element ISUn indicated by the optical fiber count value f is obtained (S87).

Next, when the received light value r is larger than the predetermined threshold value K (S88: Yes), it is determined that there is no midsole cloth UW corresponding to the optical fiber An, and the optical fiber count value f is reduced. A fiber flag FF [f] as a parameter is set (S89). On the other hand, when the received light value r is equal to or smaller than the threshold value K (S8).
8: No), the midsole cloth U corresponding to the optical fiber An.
W exists, and the fiber flag FF [f]
Is reset (S90).

Next, the upper fabric light emitting element OSUn indicated by the optical fiber count value f is turned off (S91), the count value f is incremented by one (S92), and the count value f is set to the optical fiber of the upper fabric fiber group FA. When the number is equal to or smaller than A (S93: No), S86 to S93 are repeated. Then, for all the optical fibers An, the detection light in the form of dot rows intersecting the cloth edge of the midsole cloth UW is sequentially projected, and when the light reception values r are obtained (S9).
3: Yes), based on the flag data of the A fiber flags FF [f] corresponding to the number A of optical fibers, the optical fiber number Ax corresponding to the temporary cloth end position of the midsole cloth UW is obtained and stored (FIG. 3). S94).

For example, as shown in FIG. 31, when the detection cycle count value s is "1", the fiber flag FF [f] is set or reset for each of the optical fiber count values f. The optical fiber number A4 when the flag data changes from "1" to "0" is stored in the temporary cloth end position memory of the RAM 189 as corresponding to the temporary cloth end position. Next, during the cloth feeding period (S95: No), the detection cycle count value s
And the optical fiber count value f are each incremented by one (S96), and S86 to S96 are continuously repeated during the cloth feeding period. At the cloth feed end timing (S95: Yes), a cloth end position change pattern table based on the plurality of temporary cloth end position optical fiber numbers Ax is created in the pattern memory of the RAM 189, and the cloth end position change pattern is used for fuzzy operation. By inference, the determination of the presence or absence of the notch H and the optical fiber number Am corresponding to the cloth edge position are finally determined (S97), and the main CPU 18
7, the presence / absence of the notch H and the determined optical fiber number Am are output, and the completion of the cloth end position / notch detection processing is instructed (S98), and this control ends.

Here, the fuzzy inference will be described. If the cloth edge shape of the insole cloth UW has a smooth curve in the cloth feeding period of the feeding pitch t as shown in FIG. As shown in the end position change pattern, a plurality of detection cycle count values s (s = 1, 2, 3,...)
The plurality of temporary cloth end position optical fiber numbers Ax corresponding to each of the items (1) and (2) do not suddenly change. However, when the cloth edge has a notch H in the cloth feeding period of the feeding pitch t as shown in FIG. 36, as shown in the cloth end position change pattern of FIG.
A plurality of temporary cloth end positions corresponding to each of the optical fiber numbers A
x decreases rapidly and returns rapidly. Further, when the cloth edge has a fluff I in the cloth feeding period of the feeding pitch t as shown in FIG. 37, as shown in the cloth end position change pattern of FIG. A plurality of temporary cloth end positions corresponding to each optical fiber number Ax
Rapidly increases and returns rapidly.

Therefore, the antecedent part is referred to as the reference optical fiber number A.
Based on each of a plurality of predetermined rules for determining the shift amount of the temporary cloth end position optical fiber number Ax with respect to s, and setting the consequent part to the state of the change of the temporary cloth end position optical fiber number Ax, the membership function is used to calculate the software. Determines the degree of matching, and finally determines whether the cloth edge has a smooth curve, a notch H, or a fluff I, based on the center of gravity obtained by superimposing the plurality of soft matching degrees. It is. However, when a notch H or a fluff I is provided at the cloth end during the cloth feeding period, the temporary cloth end position optical fiber number A immediately before the notch H or the fluff I is provided.
Let x be an optical fiber number Am corresponding to the cloth edge position.

Next, a routine of the cloth edge position / notch detection control of the upper cloth DW executed by the lower cloth controller 166 based on the execution command of the cloth edge position / notch detection processing control will be described with reference to the flowchart of FIG. However, since this control is the same as the control executed by the upper cloth controller 165, it will be briefly described. First, an initial value “1” is set as a detection cycle count value s and an optical fiber count value f (S100), and during the cloth feeding period, for each detection cycle count value s,
Light emitting element for upper cloth indicated by optical fiber count value f
OSUn lights up and the light receiving element corresponding to this light emitting element OSUn
The reflected light is received by ISUn, the fiber flag FF [f] is set or reset according to the magnitude of the received light value r, and the temporary cloth end position optical fiber number Bx based on the data of the plurality of fiber flags FF [f]. Are obtained (S101 to S111). Then, based on the plurality of temporary cloth end position optical fiber numbers Bx, the determination of the presence or absence of the notch H and the optical fiber number Bm corresponding to the cloth end position are finally determined by the above-described fuzzy inference (S112). On the other hand, the presence / absence of the notch H and the determined optical fiber number Bm are output, and the completion of the cloth edge position / notch detection processing is instructed (S113), and this control ends.

Next, in the sewing processing control, when a command to complete the cloth edge position / notch detection processing is received from both controllers 165 and 166 (S68: Yes),
First, regarding the midsole fabric UW, the reference optical fiber number As
Based on the input cloth end optical fiber number Am and the diameter of the optical fiber, the shift amount of the cloth end position with respect to the reference optical fiber number As is calculated, and the shift direction is obtained (S69). The upper cloth moving motor 141 is driven based on the deviation direction (S70).
As a result, each time the sewing section Dn is changed, even if the radius of curvature of the cloth end shape of the insole cloth UW changes, the sewing section Dn is changed.
Is determined with respect to the reference optical fiber number As, so that a predetermined sewing allowance can always be reliably maintained for the midsole fabric UW.

Next, regarding the upper cloth DW, the reference optical fiber number Bs and the inputted cloth end optical fiber number Bm
Based on the optical fiber diameter and the diameter of the optical fiber, the shift amount of the cloth end position with respect to the reference optical fiber number Bs is calculated, and the shift direction is obtained (S71), and the lower cloth is moved based on the shift amount and the shift direction. Motor 142 is driven (S72). As a result, even if the radius of curvature of the cloth end shape of the upper cloth DW changes, every time the sewing section En is changed, the deviation amount of the cloth end position of the sewing section En with respect to the reference optical fiber number Bs is obtained. With respect to the upper cloth DW, a predetermined seam allowance can always be reliably held.

Next, when the notch H is detected in the notch detection processing control (S73: Yes), the notch count value q and the stitch count value p are each incremented by one (S74 / S75). But notch H
Is not detected (S73: No), only the stitch count value p is incremented by one (S7).
5). Then, based on the stitch count p and both parameter tables PTU / PTD, when the sewing process is not completed (S76: No), S62 to S76 are repeatedly executed, and when the sewing is completed (S76: Ye)
s) At the timing of the needle up position, the drive of the sewing machine motor 140 is stopped (S77), the solenoid 159 for driving the presser foot is driven (S78), and all the cylinders 143 to 148 are sequentially in a predetermined order. It is driven to retreat (S7
9) After ending this control, the process returns to S11 of the cloth edge alignment / garment sewing control shown in FIG. As a result, the cloth receiving plate 32, the separating plate 66, the two swing arms 49 and 54, and the like are switched to the retracted positions, respectively, so that it is possible to take out the athletic shoes US that have been sewn and integrated. For example, as shown in FIG. 38, the toes of the insole cloth UW and the upper cloth DW are overlapped and sewn to obtain the athletic shoe US.

As described above, the midsole cloth UW is fed by a predetermined cloth feed amount, and the cloth end position is shifted so that the cloth end position becomes the reference position corresponding to the reference optical fiber number As. And the upper cloth DW is fed by a cloth feed amount larger than the cloth feed amount of the insole cloth UW corresponding to the current sewing section, and the cloth end position corresponds to the reference optical fiber number Bs. Since the deviation of the cloth edge position is eliminated so as to be the reference position, both work cloths UW / D
It is possible to automate the overlap sewing in which the upper edge of the upper cloth DW is buried while matching the edges of the cloth of W.
Thereby, in this overlapping sewing operation, neither a high level of skill nor a muscle pain is required. Further, in both the work cloths UW and DW, the reference position corresponding to the current sewing section according to the progress of the sewing process is sequentially changed and set, and the displacement of the cloth end position is eliminated based on the changed reference position. So that even when the cloth end shape has a complicated shape including a plurality of types of curves or straight lines having different radii of curvature, a predetermined sewing allowance can always be reliably ensured, and good-looking sewing is performed. be able to.

Here, the correspondence between the means described in the claims and the configuration in the above embodiment will be described. The upper feed means corresponds to the upper feed tooth 7 and the front and rear feed teeth. The drive mechanism and the feed dog vertical drive mechanism, which correspond to the lower feed means, are the lower feed tooth 8, the feed dog front-rear drive mechanism and the feed dog vertical drive mechanism. The upper cloth moving device 17 corresponds to the upper work cloth moving means, and the lower cloth moving apparatus 1 corresponds to the lower work cloth moving means.
8 Further, the upper cloth edge detecting means corresponds to the upper cloth fiber group FA, the first prism 98, the second prism 99, the light emitting elements OSU1 to OSU10 for the upper cloth, and the light receiving element IS for the upper cloth.
An upper cloth edge detecting mechanism 95 provided with U1 to ISU10, which corresponds to the lower cloth edge detecting means includes a lower cloth fiber group FB, a first prism 105, a second prism 106, and a lower cloth light emitting element OSD1 to OSD10. And a lower cloth edge detecting mechanism provided with lower cloth light receiving elements ISD1 to ISD10. The feed storage means corresponds to the R storing the lower cloth parameter table PTD.
The table memory of the AM 189 is equivalent to the sewing position detecting means, the control device C, the number of stitches, the parameter table and S66 of the sewing processing control program. Device C;
S63 of the sewing process control program, which corresponds to the second control means is the control device C and S69 to S72 of the sewing process control program.

In the upper cloth parameter table PTU and the lower cloth parameter table PTD, the reference optical fiber numbers As and Bs at the needle drop positions are stored in association with each number of stitches from the start of sewing. Alternatively, data of the shirring ratio α may be stored for each sewing section. In this case, the sewing allowance amount and the shirring amount can be held more accurately. Further, the upper cloth moving device 17 may be configured such that the upper feed teeth 7 can be moved in a direction orthogonal to the cloth feeding direction Q, and the lower cloth moving device 18 may be configured to move the lower feed teeth 8 in the cloth feeding direction Q. It may be configured to be movable in a direction perpendicular to the direction. And
The number of optical fibers provided in the upper fabric fiber group FA and the lower fabric fiber group FB is not limited to ten, but may be changed to an arbitrary number by changing the fiber diameter. In the above embodiment, in order to change the feed amount of the upper and lower work cloths, the feed rate of the lower work cloth is instructed with respect to the feed amount of the upper work cloth. The value itself may be indicated.

[0065]

As described above in detail, according to the sewing apparatus according to claim 1, the upper and lower feeding means, and the upper and lower work cloth moving means, upper and lower fabric end detecting means, the feed storage means, cloth
And end position data storage means, a sewing position detecting means, the first control means and second control means is provided, the upper and lower work cloth, fabric edge
The deviation of the cloth edge position is eliminated so that the cloth edge position at the detection position where the detection is performed becomes the reference cloth edge position, and one of the cloth cloths is positioned relative to the other cloth cloth at a position corresponding to the current sewing position. Since the cloth is fed in accordance with the value related to the feed, it is possible to automate the overlap sewing in which both the upper and lower work cloths are matched with each other and the one of the work cloths is sewn. Thereby, in this overlapping sewing operation, neither a high level of skill nor a muscle pain is required. Further, in the upper and lower work cloths, the reference cloth end position corresponding to the current sewing position according to the progress of the sewing processing is sequentially changed and set, and the reference cloth end position thus changed is set to the changed reference cloth end position. Since the cloth edge is moved so as to eliminate the deviation of the cloth edge position, a predetermined sewing allowance can always be secured even if the cloth edge shape is a complicated shape including multiple types of curves and straight lines having different radii of curvature. , You can make good-looking copy sewing.

In the case where the feed storage means stores, as the data related to the relative feed, data of the cloth feed ratio of the feed amount of the lower work cloth to the feed amount of the upper work cloth (claim 2), Data related to relative feed can be simplified.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a configuration of the present invention.

FIG. 2 is a front view of the sewing device according to the embodiment of the present invention .

FIG. 3 is a plan view of the cloth edge control device.

FIG. 4 is an enlarged view of a main part corresponding to FIG. 3;

FIG. 5 is a vertical sectional front view of a main part.

FIG. 6 is a vertical sectional front view of a main part showing the upper cloth moving device.

FIG. 7 is a partial enlarged plan view showing a main part of the lower cloth edge detection sensor.

FIG. 8 is an enlarged plan view of a main part showing an upper cloth edge detection sensor.

9 is a main portion enlarged plan view of the midsole cloth and Kinoehi cloth was set at the sewing position.

FIG. 10 is a vertical sectional side view taken along the line L─L of FIG. 8;

FIG. 11 is a partially enlarged front view showing the lower cloth moving device.

FIG. 12 is an enlarged side view of the lower cloth moving device.

FIG. 13 is a partially enlarged perspective view of a lower cloth moving device and an oil pan.

14 is a vertical sectional front view taken along the line G-G of FIG. 7;

FIG. 15 is a vertical sectional front view taken along the line J-J of FIG. 7;

FIG. 16 is an enlarged front view of the auxiliary upper cloth moving device.

FIG. 17 is a mechanism diagram of the cloth edge control device.

FIG. 18 is a configuration diagram of an upper cloth edge detection mechanism.

FIG. 19 is a configuration diagram of a lower cloth edge detection mechanism.

FIG. 20 is a block diagram of a control system of the sewing device.

FIG. 21 is a schematic substantially flowchart of cloth edge alignment, shirring sewing control.

FIG. 22 is a schematic substantially flowchart of sewing parameter setting process control.

Figure 23 is a schematic substantially flowchart of sewing preparation process control.

Figure 24 is a schematic substantially flowchart of sewing processing control.

Figure 25 is a of the insole cloth fabric edge position notch detection process control flow b <br/> over chart.

FIG. 26 is a schematic flowchart of control of upper end cloth end position / notch detection processing control;

FIG. 27 is a partial plan view of the insole fabric illustrating a sewing section of the insole fabric.

FIG. 28 is a partial plan view of the upper fabric illustrating a sewing section of the upper fabric.

FIG. 29 is a table illustrating a data configuration of an upper cloth parameter table.

FIG. 30 is a table illustrating a data configuration of a lower cloth parameter table.

FIG. 31 is a chart showing fiber flag data in an optical fiber count value.

FIG. 32 is a table showing temporary cloth end position fiber numbers at a plurality of detection cycle count values when the cloth edge is smooth.

FIG. 33 is a diagram corresponding to FIG. 23 when a cloth edge has a notch.

FIG. 34 is a view corresponding to FIG. 23 when a cloth edge is provided.

FIG. 35 is a partial plan view of an insole fabric having a smooth fabric edge.

FIG. 36 is a diagram corresponding to FIG. 35, having a notch at the cloth edge.

FIG. 37 is a diagram corresponding to FIG. 35, having a fluff at the cloth edge.

FIG. 38 is a partial perspective view of an athletic shoe in which a toe portion of an insole fabric and an upper fabric are overlapped and sewn;

FIG. 39 is a schematic perspective view of a sewing machine according to a conventional technique.

[Explanation of symbols]

 SM sewing machine M industrial lockstitch machine 7 upper feed dog 8 lower feed dog 15 cloth edge control device 17 upper cloth moving device 18 lower cloth moving device 95 upper cloth edge detection mechanism 97 upper cloth edge detection sensor 98 first prism 99 first 2 prism 100 lower cloth end detecting mechanism 104 lower cloth end detection sensor 105 first prism 106 second prism 141 upper cloth moving motor 142 lower cloth moving motor 161 linear solenoid 187 CPU 188 ROM 189 RAM C controller PTU upper cloth parameter Table PTD Lower cloth parameter table FA Upper cloth fiber group FB Lower cloth fiber group OSU1 to OSU10 Light emitting element for upper cloth ISU1 to ISU10 Light receiving element for upper cloth OSD1 to OSD10 Light emitting element for lower cloth ISD1 to ISD10 Light receiving element for lower cloth

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Patent 2555574 (JP, B2) JP-B-58-105048 (JP, B2) JP-B 60-42744 (JP, B2) JP-B 3-27229 (JP, B2) B2) Japanese Patent Publication No. 60-28517 (JP, B2) Japanese Patent Publication No. 3-44848 (JP, B2) Japanese Patent Publication No. 7-77595 (JP, B2) Japanese Utility Model Publication No. 53-13532 (JP, Y1) (58) Survey Field (Int.Cl. ⁷ , DB name) D05B 1/00-83/00

Claims (2)

(57) [Claims] 1. An upper feed means and a lower feed means capable of independently feeding an upper work cloth and a lower work cloth which are sewn in an overlapped manner, and the upper work cloth and the lower work cloth are independently clothed. Upper work cloth moving means and lower work cloth moving means movable in a direction orthogonal to the feed direction, and upper cloth end detecting means capable of independently detecting the cloth end of the upper work cloth and the cloth end of the lower work cloth. and the lower fabric edge detecting means, said upper and lower machining data related to the relative feeding of the cloth, detection of performing a feed storage means having stored in advance in association with the sewing position of the work cloth, the detection by the two cloth end detecting means the reference fabric edge position to be positioned cloth end of Oite both work cloth in a position, on both the fabric
Cloth end position data storage means stored in advance in association with a plurality of sewing positions; sewing position detection means for detecting current sewing positions of the two work cloths; output of the sewing position detection means; First control means for controlling the upper feed means and the lower feed means based on the data of the means; the output of the sewing position detecting means; and the data of the cloth end position data storage means, A sewing apparatus, comprising: a work cloth moving means and a second control means for controlling a lower work cloth moving means. 2. The apparatus according to claim 1, wherein said feed storage means is configured to store, as data relating to relative feed, data of a cloth feed ratio of a feed amount of the lower work cloth to a feed amount of the upper work cloth. The sewing device according to claim 1, wherein