JPH06121886A - Lateral feeder of work cloth in sewing machine - Google Patents

Abstract

PURPOSE:To provide a lateral feeder of a work cloth which can surely pinch and laterally feed a work cloth on the upper surface of a bed to facilitate a bobbin exchanging operation. CONSTITUTION:When a lower cloth feeding roller 87 in a sewing operation is changed over to an upper sewing position to be exposed to the upper surface of a bed through a bobbin taking-out port 77a below the bed, a shell cloth is pressed with a cloth receiving plate 32 and lower cloth feeding roller 87. The lower cloth feeding roller 87 is rotatably driven to shift the shell cloth in the direction orthogonal to the direction of feeding the shell cloth. Also, when the sewing operation is stopped and the lower cloth feeding roller 87 is changed over to a lower shelter position below a bobbin taking-out port 77a, nothing to hinder a bobbin exchanging operation is in the bobbin taking-out port 77a so that the bobbin exchanging operation can easily be carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work cloth lateral feed device for a sewing machine, and more particularly, a work cloth arranged on the upper surface of a bed can be laterally fed while being clamped by a cloth receiving member and a roller member. At times, this roller member is retracted to an unused position where the bobbin can be replaced.

[0002]

2. Description of the Related Art Conventionally, a work cloth lateral feed mechanism for moving a work cloth laterally so as to detect a cloth end position of a work cloth by a cloth end detection sensor and to eliminate the deviation of the cloth end position, Various cloth edge control devices for sewing machines have been proposed and put into practical use, in which the sewing position is sewn at a predetermined distance from the cloth edge. For example, in Japanese Examined Patent Publication No. 58-48199, in order to sew an upper cloth and a lower cloth in an overlapping manner while aligning the cloth end positions, the upper cloth is provided on the upstream side of the cloth feeding with respect to the sewing needle. Cloth stopper member that prevents the cloth edge of the work piece from slipping into the bite side (the side opposite to the work cloth), and an upper cloth edge detection device that detects that the work cloth edge shifts toward the escape side (work cloth side) And an upper cloth feeding control device for moving the work cloth to the biting side by the rotation of the rotary wheel, and similarly for the lower cloth, a lower cloth stopper member, a lower cloth cloth end detecting device, and a lower cloth cloth end detecting device. A cloth feeding control device is provided, and when the cloth edge of the upper cloth shifts to the escape side based on the detection signal from the upper cloth cloth end detecting device, the upper feeding control device is driven and the lower cloth cloth end detecting device is driven. The cloth edge of the lower cloth shifts to the escape side based on the detection signal from Sometimes, it has been described automatic guidance device of a sewing machine which is adapted to drive the lower infeed control device. In this automatic sewing machine guide device, when the cloth edge shape of the upper cloth and the cloth edge shape of the lower cloth are substantially the same cloth edge shape consisting of a straight line or a curved line, overlapping sewing is performed to match the both cloth edge positions. Even in this case, since the upper and lower cloths are placed on the bed surface, the overlapping sewing can be easily performed by controlling the drive of the rotating wheel.

[0003]

However, when making an athletic shoe made of a work cloth, as an initial sewing operation, there is a lap stitch in which a midsole cloth and an instep cloth are laid and sewn. Therefore, when the insole cloth is used as the upper cloth and the instep cloth is used as the lower cloth, the automatic sewing operation is performed when performing the overlap sewing in which the both cloth end positions are matched while guiding the insole cloth and the instep cloth in the lateral direction. In the guide device, since the cloth edge detecting device and the rotary wheel are arranged in a substantially straight line with respect to the cloth feed line, it is particularly difficult to sew the arcuate sewing parts such as the toe part and the heel part of these two cloths. become. Therefore, it is conceivable to bring the cloth edge detecting device and the rotary wheel close to the needle drop position. Therefore, especially regarding the lower feed control device, in order to avoid interference with the cloth feed mechanism and the rotary hook mechanism, it may be provided on the front side (the cloth feed upstream side) of the rotary hook mechanism, but the bobbin is supplemented with the lower thread. Therefore, when attaching and detaching the bobbin case inside the rotary hook,
There is a problem that the lower feeding control device makes the attachment / detachment work difficult.

The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to make it possible to clamp a work cloth on the upper surface of a bed and reliably feed it laterally, and to facilitate bobbin replacement work. It is intended to provide a work cloth lateral feed device for a sewing machine.

[0005]

In order to achieve the above object, a work cloth traverse device for a sewing machine according to a first aspect of the present invention is provided with a cloth receiving member disposed above a work cloth on a bed upper surface and a bed. A roller member that can be retracted from the upper surface from below, is pressed from below by sandwiching the work cloth between the cloth receiving members, and is capable of moving the work cloth in a direction intersecting the cloth feed direction, and a rotation driving means that rotationally drives this roller member. And the roller member can be selectively switched between a use position where the roller member is exposed to the upper surface of the bed through the bobbin replacement opening at the bottom of the bed and an unused position retracted below the bobbin replacement opening. It is composed.

It should be noted that the roller member is provided with the use position,
Roller switching means for selectively switching to the non-use position may be provided, and the roller switching means may be constituted by a fluid pressure cylinder for pressing the roller member against the cloth receiving member.

[0007]

In the work cloth lateral feed device for a sewing machine according to the first aspect of the present invention, when the roller member is switched to the use position where it is exposed to the bed upper surface through the bobbin replacement opening at the bottom of the bed during sewing work. Since the work cloth arranged on the upper surface of the bed is pressed and sandwiched between the cloth receiving member arranged above the work cloth and the roller member, the roller member is rotationally driven by the rotation driving means. The work cloth can be moved in a direction intersecting the cloth feed direction. At this time, the rotation drive means and the like are located in the bobbin exchange opening. On the other hand, when the sewing operation is stopped and the roller member is switched to the unused position retracted below the bobbin replacement opening, the bobbin replacement opening may interfere with the bobbin replacement operation. Since there is nothing, the bobbin replacement work can be easily performed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is a case where the present invention is applied to a sewing device including a work cloth lateral feed device. The sewing device SM is for sewing the cloth end portions of the upper cloth UW and the lower cloth DW while aligning the cloth ends thereof, and basically includes a lock stitch sewing machine M and a cloth end control device 15. First, the lockstitch sewing machine M will be described. Since this sewing machine M is similar to a general industrial lockstitch sewing machine, it will be briefly described. This lockstitch sewing machine M, as shown in FIG.
The sewing machine bed portion 1 mounted on the work table T, the pedestal portion 2 erected from the right end portion of the bed portion 1, and the pedestal portion 2 extending leftward so as to face the bed portion 1. It is composed of an arm portion 3. The bed 1 is provided with a feed dog up-and-down mechanism (not shown) that moves the lower feed dog 8 up and down, a feed dog forward-backward movement mechanism (not shown) that moves back and forth, and a thread catcher (not shown). ing.

Further, in the arm portion 3, a needle bar drive mechanism for vertically moving a needle bar (not shown) to which a sewing needle 4 (see FIG. 16) can be attached at the lower end, and a balance (not shown) are provided above and below the needle bar. A balance driving mechanism (not shown) that moves up and down in synchronization with the movement is provided. A presser bar is vertically movably supported on the sewing machine frame F on the rear side of the needle bar, and a presser foot 6 (see FIG. 3) is attached to the lower end of the presser bar. by the way,
The presser bar and the upper feed dog 7 (see FIG. 3) for feeding the upper cloth UW are connected to a presser foot driving solenoid 159 (see FIG. 19) described later, and the presser bar and the upper feed dog 7 are connected. Is switched to the retracted position raised by the drive of the presser foot driving solenoid 159.
When the driving of 9 is stopped, the position is switched to the lowered working position.

Therefore, the mechanism for vertically moving the feed dogs 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. Also, the lower feed dog 8
Is driven back and forth through the feed dog back and forth moving mechanism by a feed amount according to the inclination of the feed controller that is changed by the drive amount of a linear solenoid (not shown). Further, the upper feed dog 7 is driven back and forth through the feed dog forward / backward moving mechanism by a feed amount according to the inclination of the feed controller that is changed by the rotation amount of the upper feed dog pulse motor (not shown). 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 necessary for sewing work.

By the way, the cloth edge 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. It is provided with a lower cloth moving device 18 provided on the side and an auxiliary upper cloth moving device 19 for auxiliary position control of the upper cloth UW, which is first provided between the upper cloth UW and the lower cloth DW. A cloth receiving plate driving device 16 that drives the cloth receiving plate 32 that supports both cloths UW and DW will be described with reference to FIGS. A substantially rectangular base plate 2 is provided on the bed portion 1.
5, a strip-shaped linear cross bearing 26 extending in the left-right direction is attached to the front end portion of the upper surface of the base plate 25, and a cloth receiving base 27 made of a substantially rectangular plate material is attached to the left and right sides of the linear cross bearing 26. It is mounted so that it can move in any direction.

Then, a cloth receiving tray switching cylinder 143 arranged in the left-right direction immediately in front of the cloth receiving tray 27.
Is fixed to the base plate 25 by a bracket 28, and the tip end portion of the piston rod 143a of the cylinder 143 is connected to the drive lever 29 fixed to the cloth receiving base 27. Therefore, the cloth receiving table 27 is moved to the left by the cloth receiving table switching cylinder 143, and the left sewing position shown by the solid line in FIG. 2 and the rightward retreat operation shown by the two-dot chain line by the driving to the right. The position can be switched to and from.

On the other hand, on the cloth receiving table 27, a substantially inverted L is seen from the front.
The lower end of the character-shaped mounting plate 30 is fixed with a screw, and a twin rod type cloth receiving plate vertical drive cylinder 144 is mounted downward on the mounting plate 30.
4, a cloth receiving plate mounting plate 31 is fixed to the lower ends of the pair of piston rods 144a, and the lower side of the cloth receiving plate mounting plate 31 is, as shown in FIG. The base end of the cloth receiving plate 32 is fixed with screws. As shown in FIG. 6, the front end portion of the cloth receiving plate 32 extends leftward over the sliding plate 12 via the semicircular needle plate 11. Here, the bolt 33 (see FIG. 4) attached to the lower side of the cylinder 144 is for height adjustment for restricting the rising position of the cloth receiving plate attachment plate 31. Therefore, the cloth receiving plate 32 is moved up and down by the cloth receiving plate vertical drive cylinder 144.
4 is driven downward to drive the sewing machine to the lower sewing position shown by the solid line in FIG. 4, and driving upward to drive it to the upper retracted position shown by the chain double-dashed line. Further, as described above, the cloth receiving plate 32 is moved to the right retracted position at the same time as the cloth receiving base 27 is moved to the retracted position.

Next, the upper cloth moving device 17 is shown in FIG.
A description will be given based on FIGS. 3 and 5. The base plate 25
A strip-shaped linear cross bearing 40 extending in the left-right direction is attached to the rear side of the cloth receiving base 27 on the upper surface of the cloth receiving base 27, and a moving base 41 made of a substantially rectangular plate material is movable in the left-right direction. It has been placed. The base end portion of the moving table switching cylinder 145 arranged in the left-right direction immediately behind the moving table 41 has the base plate 2
5 is pivotally supported by a support bracket 42,
The tip end portion of the piston rod 145 a of the cylinder 145 is connected to the drive lever 43 fixed to the moving base 41. Therefore, the moving base 41 has a left sewing position shown by a solid line in FIG. 2 by driving the moving base switching cylinder 145 to the left and a right retracted position shown by a chain double-dash line by moving it to the right. The position is switched to.

As shown in FIGS. 3 and 5, an L-shaped block member 44 in a side view is fixedly mounted on the moving base 41.
An upper cloth moving motor 141 for moving the upper cloth UW in a direction (horizontal direction) orthogonal to the cloth feeding direction Q is attached to the vertical wall portion 44a of the block member 44 from the rear side and is composed of a stepping motor. A timing pulley 45 is fixed to the drive shaft 141a of the moving motor 141. A cylindrical bush 46 is fixed to the vertical wall portion 44a, and a cylindrical first pivotally supporting member 47 having a collar portion is fitted into the bush 46, and the front end surface of the collar portion is fixed to the timing pulley 45. The first pivot member 4 is brought into contact with the rear end face.
7 is locked out.

The first swing arm 49, which is a strip-like plate member and is arranged immediately rearward of the flange portion of the first pivot member 47, is screwed to the flange portion and the spacer 48 is provided.
Is in contact with the bush 46 via. The mounting portion 4 in which a part of the first swing arm 49 projects upward
A tip end portion of a piston rod 146a of an arm rotation cylinder 146 pivotally supported by a support member 50 attached to the moving base 41 is pivotally connected to the shaft 9a.
Further, the second pivotally supporting 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 141a and is rotated by the pivotally supporting member 53 fixed to the moving base 41. Be pivoted as possible. A second belt-like member is provided immediately in front of the flange portion of the second pivot member 51 and is made of a plate-like member and is opposed to the first swing arm 49.
The swing arm 54 is screwed to the flange portion and abuts on the pivot 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 the screws 5 are attached to the tips of the first and second swing arms 49 and 54.
A timing pulley 58 is rotatably supported by a pair of pivotally supporting members 57 fixed at 6, and a timing belt 59 is stretched between the timing pulleys 45 and 58. In addition, the first and second swing arms 49 and 54
The pair of bolts 60 fixed to the block member 44 is brought into contact with the upper side and the lower side of the connecting member 55 to restrict the rotation range thereof. In addition, as shown in FIG. 5, a pair of tension pulleys 61 for applying tension to the timing belt 59 are pivotally mounted inside the swing arms 49 and 54.

Therefore, both the timing pulleys 45 and 58 are driven by the forward rotation driving or the reverse rotation driving of the upper cloth moving motor 141.
The timing belt 59 is rotated normally or reversely via the, and the upper cloth UW disposed below the timing belt 59 is moved leftward or rightward. Furthermore, both swinging arms 49 and 54
4 is switched to a sewing rotation position shown by a solid line in FIG. 4 by driving the arm rotation cylinder 146 to the left and a retracting rotation position shown by a two-dot chain line by driving it to the right. Here, when both swinging arms 49 and 54 are switched to the retracted rotation position and the left sewing position, and further, the cloth receiving plate 32 is switched to the upper retracted position and the left sewing position, the needle plate 11 is moved. The lower cloth DW can be placed on the upper side.

Next, the upper cloth UW is arranged on the upper surface of the needle plate 11.
Separation plate driving mechanism 65 for driving the separation plate 66 for accurately performing the independent cloth feeding and the lower cloth DW feeding independently.
Will be described with reference to FIGS. 3 and 7 to 9. The separation plate 66 is plate-shaped and has a crank shape in a plan view, 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. In a rearward bent shape, and the base end portion thereof is formed to be one step higher.
Is screwed to the left end of the. On the other hand, as shown in FIGS. 3 and 9, an L-shaped mounting member 68 is fixed to the cloth receiving plate mounting plate 31, and a separation plate front-rear drive cylinder 147 is mounted on the L-shaped mounting member 68.
The L-shaped attachment 69 fixed to the tip of the piston rod 147a of FIG. 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 separating plate 66 has a rear sewing position shown by a solid line in FIG. 7 when the separating plate front and rear drive cylinder 147 is driven to move backward, and a front retracted position shown by a chain double-dashed line when driving is moved forward. The position is switched to. Moreover, since the separating plate 66 is attached to the cloth receiving plate mounting plate 31 via the separating plate front / rear drive cylinder 147 and the L-shaped mounting member 68, at the same time when the cloth receiving plate 32 moves to the raised retracted position. It is moved to the upper retracted position.

Next, the lower cloth moving device 18 for moving the lower cloth DW in the left-right direction will be described with reference to FIGS. 1 and 10 to 12. A lower shaft (see FIG. 1) 13 extending in the left-right direction is arranged in the bed portion 1, a rotary hook 75 is connected to a left end portion of the lower shaft 13, and a bobbin case 76 is provided in the rotary hook 75. It is stored. Also, bed section 1
At the bottom of the oil pan 7
7 are provided. Below this oil pan 77,
A plate-shaped support frame 78 extending downward is attached to the support frame 78, which is a cylinder for driving the lower cloth moving mechanism 80 up and down. It is installed with the part tilted to the right. Therefore, the lower cloth moving mechanism 80 moves upward by the lower cloth driving cylinder 148, as shown by the solid line in FIG.
By the downward drive, the position is switched to the unused position which is moved downward as shown by the chain double-dashed line.

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 for moving the lower cloth DW in the left-right direction is fixed to the movable portion 148a, and a lower end portion of a support plate 81 having a substantially trapezoidal shape in a front view is screwed. Further, a lower end portion of a support lever 83 is connected to an upper end portion of the support plate 81 via a spacer 82, and a pair of pivot support members 85 and 86 is connected to an upper end portion of the support lever 83 via a spacer 84. A pair of lower cloth feed rollers 87, which are screwed, and are partially tapered, are rotatably supported by pins 88 at the upper ends of the pair of pivotally supporting members 85 and 86.

Then, the lower cloth feed roller 87 and the pulley 8 fixed to the drive shaft 142a of the lower cloth moving motor 142.
A timing belt 90 is stretched between 9 and the belt. Therefore, the lower cloth feed roller 87 is normally or reversely rotated through the pulley 89 and the timing belt 90 by the normal rotation driving or the reverse rotation driving of the lower cloth moving motor 142, and the lower cloth arranged on the upper side of the timing belt 90. The DW is moved to the left or right. Here, as shown in FIG. 12, when the lower cloth moving mechanism 80 is switched to the use position, the lower cloth feed roller 87 causes the cloth receiving plate via the rectangular notch 11a formed in the slide plate 12. Since it rises until it is exposed immediately below 32, the bobbin replacement opening 77a formed in the oil pan 77 is covered by this lower cloth moving mechanism 80. However, when the lower cloth moving mechanism 80 is switched to the unused position, the lower cloth feeding roller 87 causes the oil pan 7 to move.
It will descend to the bottom of 7, and in this state,
The operator can take out the bobbin case 76 through the bobbin exchange opening 77a. Here, the lower cloth moving device 18 constitutes a work cloth lateral feeding device.

Next, the upper cloth edge detecting mechanism 95 for detecting the cloth edge position of the upper cloth UW will be described with reference to FIGS. 7 to 9, 16 and 17. On the upper side of 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 arranged and 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 accommodating portion 96a is formed by cutting out a lower half portion of the upper cloth UW so that the upper cloth UW can be set. An upper cloth edge detecting sensor 97 made of a prism is housed in the portion 96a so that its lower portion faces the lower side of the sensor housing portion 96a. That is, the upper cloth edge detecting sensor 97 is provided on the upstream side of the sewing needle 4 in the cloth feeding direction Q.

As shown in FIG. 18, the upper cloth edge detecting sensor 97 is a first prism which is a right angle prism having an apex angle of 90 °.
It is configured by a combination of the prism 98 and the second prism 99, and one end surface of the first prism 98 and the second prism 99.
And the second prism 99 is arranged orthogonal to the cloth edge. Then, the first prism 9
On the right end face (beam input face) of 8, the fiber diameter is about 0.5m.
The front end faces of the upper fabric fiber group FA composed of 10 optical fibers A1 to A10 each having m are connected in a row. Further, at the base end portions of the optical fibers A1 to A10, ten light emitting elements OSU1 to OSU10, which are light emitting diodes and the like, are provided in association with each other via half mirrors HM1 to HM10, and a phototransistor and the like are provided.
Zero light receiving elements ISU1 to ISU10 are provided.

Therefore, each of the detection lights such as the laser beams projected from each of the light emitting elements OSU1 to OSU10 passes through the half mirrors HM1 to HM10 and these optical fibers A1 to
After passing through A10, it is incident on the first prism 98 and is totally reflected at a right angle to the second prism 99 side. Further, at the second prism 99, a total reflection is made at a right angle to the lower side. It is projected from a direction substantially orthogonal to the UW or the cloth receiving plate 32. The reflected light reflected by the upper cloth UW or the cloth receiving plate 32 is totally reflected by the second prism 99 and the first prism 98, respectively, and is the same as the optical fiber A1 at the time of projection.
~ A10 and then reflected by half mirrors HM1 to HM10,
The reflected light is received by each of the light receiving elements ISU1 to ISU10.
That is, the detection light is projected from the tip side of the ten optical fibers A1 to A10 through both prisms 98 and 99 in the form of a dot row intersecting the cloth edge of the upper cloth UW, and from the reflected light, the upper cloth U is detected.
The cloth edge position of W can be detected. Here, the amount of light received by the light receiving elements ISU1 to ISU10 is larger than the amount of light received by the upper cloth UW when reflected by the cloth receiving plate 32.

Next, the lower cloth edge detecting mechanism 100 for detecting the cloth edge position of the lower cloth DW will be described with reference to FIGS.
This will be described with reference to FIGS. 14, 16 and 18. Base plate 25 corresponding to the lower side of the upper cloth moving motor 141
A sensor support plate 101 is fixed on the upper side, and a connecting plate 102 is attached on the lower side of the left end portion of the sensor support plate 101. Further, the needle plate 11 is formed with a notch 11b having a substantially U shape 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-down portion of the sensor mounting block 103 is located inside the notch 11b.

A lower cloth edge detecting sensor 104 made of a prism is accommodated in a sensor accommodating portion 103a which is long in the left-right direction at the front end portion of the sensor mounting block 103 so that its upper portion faces the upper side of the sensor accommodating portion 103a. There is. That is, the lower cloth end detection sensor 104 is provided substantially opposite to the upper cloth end detection sensor 97 and upstream of the sewing needle 4 in the cloth feeding direction Q. This lower cloth edge detection sensor 104
As shown in FIG. 19, is composed of a combination of a first prism 105 and a second prism 106, which are right-angle prisms having an apex angle of 90 °, and one end face of the first prism 105 and the second prism 106 are One end face is pasted together,
The second prisms 106 are arranged orthogonally to the cloth edge.
Then, to the right end surface (light ray input surface) of the first prism 105, the front end surfaces of the lower cloth fiber group FB composed of 10 optical fibers B1 to B10 each having a fiber diameter of about 0.5 mm are connected in a row. Has been done. Further, the half mirrors HM11 to HM are attached to the base ends of the optical fibers B1 to B10.
The ten light emitting elements OSD1 to OSD10, which are light emitting diodes and the like, are provided in association with each other via 20 and the ten light receiving elements ISD1 to
ISD10 is provided.

Therefore, each of the detection lights such as the laser beams projected from each of the light emitting elements OSD1 to OSD10 passes through the half mirrors HM11 to HM20, and these optical fibers B1 to B1.
The light then enters the first prism 105 via 10 and is totally reflected at a right angle to the second prism 106 side.
Is totally reflected at a right angle to the upper side, and is projected from the second prism 106 in a direction substantially orthogonal to the lower cloth DW or the cloth receiving plate 32 located on the upper side. Then, the lower cloth DW or the cloth receiving plate 32
The reflected light reflected by is totally reflected by the second prism 106 and the first prism 105 respectively, and is reflected by the half mirrors HM11 to HM20 through the same optical fibers B1 to B10 as at the time of projection. The light is received by ISD1 to ISD10 respectively. That is, 1 through both prisms 105 and 106
From the tip side of 0 optical fibers B1 to B10, the lower cloth DW
It is possible to project the detection light in the form of a dot line that intersects with the cloth edge and detect the cloth edge position of the lower cloth DW from the reflected light.
Here, the amount of light received by the light receiving elements ISD1 to ISD10 is
The amount of light received when reflected by the cloth receiving plate 32 is larger than the amount of light received when reflected by the lower cloth DW.

By the way, as shown in FIGS. 6, 13, and 14, the cloth edge positions of the upper cloth UW and the lower cloth DW are regulated to the right of the needle hole 11c formed in the needle plate 11, respectively. A restricting wheel 110 is provided for rotatably rotatably attached to the distal end of a holding member 111 having a base end fixed to the connecting plate 102 and extending leftward. Next, the auxiliary upper cloth moving device 19 will be described with reference to FIGS. A pivot member 115 is erected on the left end of the work table T, and a pivot plate 116 is attached to the pivot member 115.
Is rotatably supported by a bolt 117, and a twin rod type auxiliary upper cloth supporting cylinder 149 is attached to the upper end of the rotating plate 116 in a state of descending to the right.

At the tip of the piston rod 149a of the auxiliary upper cloth support cylinder 149, the cylinder mounting member 1
18 is attached, and an auxiliary upper cloth pressing cylinder 150 is attached to the cylinder attaching member 118 to the right.
Further, an L-shaped auxiliary cloth receiving member 119 is attached to the tip of the piston rod 150a of the auxiliary upper cloth pressing cylinder 150. Therefore, as shown in FIG. 15, the auxiliary cloth receiving member 119 is the same as the auxiliary upper cloth supporting cylinder 1.
The rightward sewing position shown by the solid line in FIG. 15 by the drive of 49 to the right, and the two-dot chain line in FIG. 15 by the drive of the auxiliary upper cloth support cylinder 149 to the left and right (indicated by the solid line in FIG. 1). The position is switched to the left retracted position, that is, the unused position. Further, when the auxiliary cloth receiving member 119 is switched to the right sewing position and the swing arms 49 and 54 are switched to the retracted rotation positions, the auxiliary upper cloth pressing cylinder 150 is driven to advance. At some times, the auxiliary cloth receiving member 119 moves from the current right sewing position to the timing pulley 5 via the timing belt 59 as shown in FIG.
The left side peripheral surface of 8 and the right end portion of the auxiliary cloth receiving member 119 can be switched to a use position in which the upper cloth UW arranged in the vertical direction is additionally sandwiched and can be pressed from the side. . Here, the bolt 121 screwed to the bolt support member 120 screwed to the pivot member 115 is for adjusting the inclination of the auxiliary upper cloth support cylinder 149.

Next, the control system of the sewing machine SM is constructed 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, the numeric keypad 136, the set switch 137, the lowering switch 200 for lowering the lower cloth moving mechanism 80, the raising switch 201 for raising the lower cloth moving mechanism 80, the rotational phase of the sewing machine main shaft provided in the arm portion 3 is detected, and the needle bar is moved to the moving position. A needle position signal generator 138 for outputting a corresponding needle position signal, and a display controller 20 for displaying characters and symbols on the liquid crystal display 203 provided on the operation panel 10.
2 are connected respectively.

Further, the input / output interface 185 includes a drive circuit 170 for the sewing machine motor 140, a drive circuit 171 for the upper cloth moving motor 141, a drive circuit 172 for the lower cloth moving motor 142, and a cloth receiver. A drive circuit 173 for the electromagnetic switching valve 151 that drives the base switching cylinder 143, a drive circuit 174 for the electromagnetic switching valve 152 that drives the cloth receiving plate vertical drive cylinder 144, and an electromagnetic switching valve that drives the moving base switching cylinder 145. Drive circuit 175 for 153, drive circuit 176 for electromagnetic switching valve 154 that drives arm rotation cylinder 146, drive circuit 177 for electromagnetic switching valve 155 that drives separator plate front-back drive cylinder 147, bottom cloth drive Circuit 178 for the electromagnetic switching valve 156 for driving the cylinder 148, auxiliary upper cloth support cylinder 14 Drive circuit 179 for the electromagnetic switching valve 157 that drives the actuator, drive circuit 180 for the electromagnetic switching valve 158 that drives the auxiliary upper cloth pressing cylinder 150, drive circuit 181 for the presser foot driving solenoid 159, and upper feed dog. Circuit 182 for the motor 160 for driving, the drive circuit 183 for the linear solenoid 161, the light emitting elements OSU1 to OSU10 and the light receiving elements ISU1 to ISU10 for detecting the cloth edge of the upper cloth UW.
, The light emitting elements OSD1 to OSD10 and the light receiving elements ISD1 to ISD10 for detecting the cloth edge of the lower cloth DW are respectively connected.

Further, the input / output interface 185 is provided with an advancing position switch e1 that operates at the advancing position of the cloth cradle switching cylinder 143 and an withdrawal position switch e2 that operates at the withdrawing position, and in the same way as below for driving the cloth receiving plate vertically. An advance position switch e3 and a retreat position switch e4 of the cylinder 144, an advance position switch e5 and a retreat position switch e6 of the moving base switching cylinder 145, and an advance position switch e7 and a retreat position switch e8 of the arm rotation cylinder 146. , The advance position switch e9 and the retreat position switch e10 of the separating plate front and rear drive cylinder 147, the advance position switch e11 and the retreat position switch e12 of the lower cloth drive cylinder 148, and the advance position switch e13 of the auxiliary upper cloth support cylinder 149. And withdrawal position switch e14 and auxiliary upper cloth pressing cylinder 50 advanced position switches e15 and retracted position switch e16 Togaotto people are connected.

The controller C has a well-known CPU 187, an input / output interface 185 connected to the CPU 187 via a bus 186 such as a data bus, and a ROM 18.
8 and RAM 189. ROM18
8, various switches 130 to 137/200/201
Depending on the operation of the motors 140 to 142 and the electromagnetic switching valve 1
A drive control program for driving 51 to 158, a control program for the cloth edge aligning and sewing control peculiar to the present invention, which will be described later, and the like are stored. The RAM 189 is provided with various memories such as a buffer, a counter, and a pointer for temporarily storing the calculation result calculated by the CPU 187.

Next, the routine of the cloth edge aligning and sewing control executed by the controller C of the sewing machine SM will be described with reference to the flowcharts of FIGS. In the figure, reference numeral Si (i = 10, 11, 12, ...) Indicates each step. When the sewing machine SM is powered on, this control is started. First, each memory of the RAM 189 is cleared, each electromagnetic switching valve 151-158 is driven, and each cylinder 143-150 is retracted in a predetermined order. It is switched to the position and driven. In addition, the presser foot driving solenoid 159
Is driven, a series of initial setting processing is executed such that the presser bar 5 and the upper feed dog 7 are moved to the raised retracted position (S10). That is, as a result of the execution of this initial setting process, the lower cloth DW and the upper 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), the sewing parameter setting processing control (see FIG. 21) for the upper cloth UW and the lower cloth DW to be sewn is executed (S1).
3). When this control is started, first, the ten key 136 is operated to input and set a desired program number (S2
5) Further, for the upper cloth UW, the number D of sewing sections from the sewing start position to the sewing end position is input and set (S2).
6). Here, the sewing section refers to a sewing section having the same curvature radius in the cloth edge shape of the upper cloth UW. For example, as shown in FIG. 29, in the cloth end shape from the sewing start position to the sewing end position of the upper cloth UW, the sewing ranges having the same radius of curvature are sequentially sewn into the sewing section 1, the sewing section 2, the sewing section 3 ,. ... is set, and this number of sewing sections D
Is input by operating the ten keys 136.

Next, the 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 the number of stitches Pn and the reference optical fiber number As are associated with the sewing section Dn by the operation of the set key 137, and the RAM 189.
Is stored in the work memory (S28). Next, the sewing section count value Dn is incremented by 1 (S2
9) When the counter value Dn is less than or equal to the number of sewing sections D (S30: No), S28 to S30 are repeated.

When the counter value Dn becomes larger than the sewing section number D (S30: Yes), the set sewing section number E of the lower cloth DW is the same as the upper cloth UW with respect to the lower cloth DW. Number of stitches to sew Pn for each
And the lower cloth fiber group F corresponding to the cloth edge position at that time
The reference optical fiber number Bs of B is input respectively, and every time the set key 137 is operated, the number of stitches Pn and the reference optical fiber number Bs are associated with the sewing section En and RA
Stored in the work memory of M189 (S31 to S3
5). Then, when the number of stitches Pn and the reference optical fiber number Bs are set for all the sewing sections E (S35: Yes), this control is ended and the process returns to S11 of the cloth edge justification sewing control. Therefore, RAM189
In the table memory of, for example, as shown in FIG.
Regarding the upper cloth UW, for each sewing section Dn, the reference optical fiber number As corresponding to the reference cloth end position and the number of stitches Pn
An upper cloth parameter table PTU associated with and is stored. Further, a lower cloth parameter table is similarly stored for the lower cloth DW.

Next, when the program correction switch is operated (S11: Yes, S12: No, S14:
Yes), the number of the program to be modified is the numeric keypad 136
Is input (S15), and a correction process for sequentially correcting the reference optical fiber numbers As and Bs corresponding to the number of stitches P and the cloth edge position is executed for the content of the program number (S16), and the process returns to S11. Next, when the sewing preparation switch 132 is operated (S11: Yes, S12
-S14: No, S17: Yes), and sewing preparation processing control (see FIG. 22) is executed (S18).

This control is started, and first the operation switch 1
When 34 is operated (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 retracted position (S42: No), first the cloth The cradle switching cylinder 143 is driven to advance (S43),
Further, the moving table switching cylinder 145 is driven to advance (S4
4), the first operation flag 1MF is set (S45),
Return to S40. Therefore, the swinging arms 49 and 54 are switched to the left sewing position while being held at the retracted rotation position, and the position is switched to the left sewing position when the cloth receiving plate 32 is held at the upper retracted position. . At this time, as shown in FIG. 8, the cloth end position of the lower cloth DW is brought into contact with the restriction wheel 110 from the left side, and the sewing start position is made to coincide with the needle drop position, so that the lower cloth DW moves to the needle plate 11. It is set on the upper side and on the lower side of 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 is set.
When the operation flag 2MF is reset (S4
6: No), first the cloth receiving plate vertical drive cylinder 144 is driven to advance (S47), and then the separation plate longitudinal drive cylinder 1
47 is driven to advance (S48), and the lower cloth drive cylinder 148 is driven to move forward (S49).
The MF is set (S50), and the process returns to S40. Therefore,
With the cloth receiving plate 32 held at the left sewing position, the lower sewing position is switched to, the separating plate 66 is switched to the rear sewing position, and the lower cloth moving mechanism 80 is switched to the upper sewing position, so that the timing belt 90 is moved. The lower cloth DW is pressed and held on the cloth receiving plate 32 by the upper end of the lower cloth feeding roller 87.

At this time, as shown in FIG. 8, the cloth end of the upper cloth UW is brought into contact with the regulating wheel 110 from the left side while the cloth end of the upper cloth UW is made to coincide with the cloth end of the lower cloth DW and is sewn. The start position is matched with the needle drop position and set on the upper side of the cloth receiving plate 32. After that, 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. Three
When MF is not set (S55: No),
The arm rotation cylinder 146 is driven to advance (S5
6), the third operation flag 3MF is set (S57),
Return to S40. Therefore, both swing arms 49 and 54 are switched to the sewing rotation position, and the upper cloth UW is pressed and held by the cloth receiving plate 32 at the lower end portion of the timing belt 59.

Further, when the operation switch 134 is operated again (S40 / S41: Yes), when the first, second and third operation flags 1MF, 2MF and 3MF are respectively set (S42 / S46). S55: Yes),
The drive of the presser foot driving solenoid 150 is stopped (S5
8) The position of the presser foot 6 and the upper feed dog 7 is switched to the presser position, this control is ended, and the cloth edge aligning and sewing control S11 is performed.
Return to. However, the presser foot drive solenoid 15
When the release switch 135 is operated before the drive of 0 is stopped (S40: Yes, S41: No, S5
1: Yes), when the second operation flag 2MF or the third operation flag 3MF is set (S52: Yes).
s), all of the cylinders 144, 146 to 148 that are driven to advance except the cylinders 143 and 145 are sequentially driven to move in and out in a predetermined order (S53), and both operation flags 2MF,
The 3MFs are reset (S54), and the process returns to S40.
As a result, it is possible to reset from the lower cloth DW.

Next, when the sewing start switch 133 is operated (S11: Yes, S12, S14, S1).
7: No, S19: Yes), and the sewing process control (see FIG. 23) is executed (S20). When this control is started, first, an operation confirmation processing control (see FIG. 24) for confirming whether each of the cylinders 143-148 is in the operating state is executed (S60). When this control is started, first, the initial value "1" is set to the taunt value i of the operation confirmation number counter (S120). And each cylinder 143-148
Advance switch e1 ・ e3 ・ e5 ・ e7 ・ e9 ・ e11
Based on the advance position signal from all cylinders 143-
When 148 is driven to the operating state, that is, the advanced state (S121: Yes), this control is immediately ended, and the process returns to S61 of the sewing processing control shown in FIG.

However, when one or more of the cylinders 143-148 are not driven forward (S121:
No), the cylinders 143-1 which are not driven to advance
The advance drive command is output again to all 48 in a predetermined order (S122), and when the operation confirmation number count value i is smaller than the predetermined number y (S123: No), the operation confirmation number count value i is one. Is incremented (S1
24), and S121 and subsequent steps are repeated. Then, when all the cylinders 143-148 are in the operating state, this control is ended and the process returns as described above. When the cylinders 143-148 have not been activated (S123: Yes), an error message is displayed on the display 203 (S12).
5) When this control is finished, the execution of the cloth edge aligning and sewing control is stopped.

By the way, all the cylinders 143-148.
23 is in an operating state, S of the sewing processing control shown in FIG.
Count value p for returning to 61 and counting the number of stitches P
Is reset (S61), and the sewing machine motor 140 is driven (S62). Therefore, the cloth feed operation is executed so that the upper feed dog 7 and the lower feed dog 8 have the preset cloth feed amount, respectively, so that the cloth end alignment sewing of the upper cloth UW and the lower cloth DW is started. . Next, based on the needle position signal from the needle position signal generator 138, at the so-called needle cloth matching timing when the sewing needle 4 inserts the upper cloth UW (S63: Yes), the stitch number count value p is incremented by one. (S64), the stitch count value p and the upper / lower cloth parameter table P
When the sewing process is not completed based on T (S65:
No), first, the cloth edge position detection processing control (see FIG. 25) is executed for the upper cloth UW (S66).

When this control is started, the initial value "1" is first set as the count value f of the optical fiber counter (S77), and the light emitting device OSUn for top cloth designated by the optical fiber count value f is turned on ( S78). As a result, as described above, the detection light projected from the light emitting element OSUn is the optical fiber An corresponding to this light emitting element OSUn.
After passing through the first prism 98 and the second prism 99, the reflected light is reflected by the upper cloth UW or the cloth receiving plate 32, and the reflected light passes through the same optical fiber An and passes through the half mirror HMn.
And is received by the light receiving element ISUn corresponding to the light emitting element OSUn. Then, the light receiving value r (digital value) based on the light receiving amount received by the light receiving element ISUn for upper cloth, which is designated by the optical fiber count value f, is obtained (S79).

Next, when the received light value r is larger than the predetermined threshold value K (S88: Yes), it means that there is no upper cloth UW corresponding to the optical fiber An.
A fiber flag FF [f] having the optical fiber count value f as a parameter is set (S81). on the other hand,
When the received light value r is less than or equal to the threshold value K (S80: N
o), the upper cloth UW exists corresponding to the optical fiber An, and the fiber flag FF [f] is reset (S82).

Next, the light emitting device OSUn for the upper cloth, which is designated by the optical fiber count value f, is turned off (S83), the count value f is incremented by 1 (S84), and this count value f is the optical fiber of the upper cloth fiber group FA. When the number is A or less (S85: No), S78 to S85 are repeated. Then, with respect to all the optical fibers An, dot row-shaped detection light intersecting with the cloth edge of the upper cloth UW is sequentially projected, and when their received light values r are obtained (S85:
Yes), based on the flag data of A fiber flags FF [f] corresponding to the number A of optical fibers, the upper cloth UW
Of the optical fiber number Am corresponding to the cloth edge position of the cloth, that is, the optical fiber number Am when the flag data changes from "1" to "0" is determined (S86), this control is ended, and the sewing process control is performed. Returns to S67, and the upper cloth shift amount calculation processing control (see FIG. 26) is executed.

When this control is started, the current sewing position, that is, the current sewing section number Dn is obtained based on the stitch count value p and the upper cloth parameter table PTU (S
105), the reference optical fiber number As corresponding to the sewing section number Dn is read from the upper cloth parameter table PTU (S106). Then, based on the reference optical fiber number As, the cloth end optical fiber number Am, and the diameter of the optical fiber, the deviation amount of the cloth end position with respect to the reference optical fiber number As is calculated, and the deviation direction is obtained (S107). The control is ended and the process returns to S68 of the sewing process control, and the upper cloth moving motor 141 is driven based on the deviation amount and the deviation direction. As a result, even if the radius of curvature of the cloth end shape of the upper cloth UW changes, the deviation amount of the cloth end position with respect to the reference optical fiber number As of the sewing section Dn is obtained every time the sewing section Dn is changed. With respect to the upper cloth UW, a predetermined seam allowance can always be reliably retained.

Next, the cloth edge position detection processing control (see FIG. 27) of the lower cloth DW is executed (S69). This control is the same as the upper cloth end position detection processing control,
Briefly, each time the optical fiber count value f is incremented by one, the lower cloth light emitting element OSDn indicated by the optical fiber count value f is turned on, and the detection light projected from the light emitting element OSDn emits this light. After passing through the optical fiber Bn corresponding to the element OSDn, the first prism 105 and the second prism 106, it is reflected by the upper cloth UW or the cloth receiving plate 32, and this reflected light is reflected by the half mirror HMn through the same optical fiber Bn and the light emitting element. The light is received by the light receiving element ISDn corresponding to OSDn. And this light receiving element ISDn
The fiber flag FF [f] having the optical fiber count value f as a parameter is set or reset depending on the magnitude of the received light value r based on the amount of received light in S90 (S90).
~ S98).

Then, with respect to all the optical fibers Bn, detection light in the form of dot rows intersecting the cloth edge of the lower cloth DW is sequentially projected, and when the received light values r thereof are obtained (S
98: Yes), based on the flag data of the B fiber flags FF [f] corresponding to the number B of optical fibers, the optical fiber number Bm corresponding to the cloth edge position of the lower cloth DW is determined (S99), and this control is performed. After the completion, the process returns to S70 of the sewing process control, and the lower cloth shift amount calculation process control (see FIG.
8) is executed.

When this control is started, the reference optical fiber number Bs corresponding to the current sewing section number En is read out as in the above-mentioned upper cloth shift amount calculation processing control (S11).
0, S111), the shift amount of the cloth edge position with respect to the reference optical fiber number Bs is calculated, and the shift direction is obtained (S112), and this control is ended and the process returns to S71 of the sewing processing control, and this shift amount is determined. The lower cloth moving motor 142 is driven based on the shift direction, and the process returns to S63. As a result, even if the radius of curvature of the cloth end shape of the lower cloth DW changes, the sewing section E is changed every time the sewing section En is changed.
Since the shift amount of the cloth edge position with respect to the reference optical fiber number Bs of n is obtained, the predetermined seam allowance can be always reliably held for the lower cloth DW.

When the sewing is completed (S6
5: Yes), at the timing of reaching the needle up position, the driving of the sewing machine motor 140 is stopped (S72), the presser foot driving solenoid 159 is driven (S73), and all the cylinders 143-148 are arranged in a predetermined order. Are sequentially driven in and out (S74). As a result, the cloth receiving plate 32 and the separating plate 66
Since both the swing arms 49 and 54 are switched to the retracted positions, it is possible to take out the work cloth which is sewn and integrated. Then, the number of times of sewing is displayed on the display 203 (S75), the control is terminated,
The process returns to S11 of the cloth edge aligning and sewing control shown in FIG.

By the way, at the start of sewing, the operator
When it is determined that it is time to replace the bobbin thread by looking at the number of times of sewing displayed on the display 203, the lowering switch 2
00 is operated (S11: Yes, S12, S14
-S17-S19: No, S21: Yes), the lower cloth drive cylinder 148 is driven to retract (S22), and the S1
Return to 1. As a result, as described above, the lower cloth moving mechanism 8
0 is switched to the unused position as shown by the solid line in FIG. Therefore, the lower cloth feed roller 87 descends to the lower side of the oil pan 77, and in this state, the operator can take out the bobbin case 76 through the bobbin exchange opening 77a. Next, the bobbin case 76
Is taken out, the bobbin is wound on the bobbin, the bobbin case 76 in which the bobbin is mounted is set again, and then the raising switch 201 is operated (S11: Yes, S1).
2-S14-S17-S19-S21: No, S23:
Yes), the lower cloth drive cylinder 148 is driven to advance (S24), and the process returns to S11. As a result, the lower cloth moving mechanism 80 is switched to the use position as shown by the two-dot chain line in FIG. 12, and sewing can be resumed.

As described above, the lower cloth feeding roller 87 for moving the lower cloth DW in the direction orthogonal to the cloth feeding direction Q.
Can be switched between a use position exposed on the upper surface of the bed portion 1 and a non-use position retracted below the bobbin replacement opening 77a. Therefore, the lower cloth feed roller 87 is switched to the use position. DW can be sewn while moving in the direction orthogonal to the cloth feed direction Q, and the lower cloth feed roller 87 can be used.
The bobbin can be easily replaced by switching to the unused position. Further, the lower cloth feed roller 87 is selectively switched between the use position and the non-use position by the lower cloth drive cylinder 148. Therefore, the air pressure is adjusted to adjust the lower cloth feed roller 87 to the lower cloth DW. The pressing force of can be adjusted.

Here, the correspondence between each means described in the claims and the constitution in the above-mentioned embodiment will be explained. What corresponds to the cloth receiving member is the cloth receiving plate 32 and the roller member. The equivalent is the lower cloth feed roller 87.
The lower drive moving motor 142, the timing belt 90, the timing pulley 89 and the like correspond to the rotation driving means.

In the lower cloth moving device 18, the lower feed roller 87 of the lower cloth moving mechanism 80 may be moved in an arc shape so as to be switchable between a use position and a non-use position. A lockstitch sewing machine in which the oil pan 77 is not provided below the bed portion 1 may be used.

[0060]

As described above in detail, according to the work cloth lateral feed device for a sewing machine of the present invention, the roller member for moving the work cloth in the direction orthogonal to the cloth feed direction is exposed on the upper surface of the bed. Since it is possible to switch between the use position and the unused position retracted below the bobbin replacement opening,
The roller member can be switched to the use position and the work cloth can be sewn while moving in a direction intersecting the cloth feed direction, and the roller member can be switched to the unused position to facilitate bobbin exchange work. Further, there is provided a roller switching means for selectively switching the roller member between a use position and a non-use position, and the roller switching means is a fluid pressure cylinder for pressing the roller member against the cloth receiving member. When configured (Claim 2), the fluid pressure can be adjusted to adjust the pressing force of the work cloth by the roller member.

[Brief description of drawings]

FIG. 1 is a front view of a sewing device.

FIG. 2 is a plan view of a cloth edge control device.

FIG. 3 is an enlarged view of a main part and is equivalent to FIG.

FIG. 4 is a vertical sectional front view of a main part.

FIG. 5 is a partial vertical sectional front view showing an upper cloth moving device.

FIG. 6 is a partial enlarged plan view of a main part showing a lower cloth edge detection sensor.

FIG. 7 is a partial enlarged plan view of an essential part showing the upper cloth edge detection sensor.

FIG. 8 is an enlarged plan view of a main part where the insole cloth and the instep cloth are set at the sewing position.

9 is a vertical cross-sectional side view of the line LL in FIG.

FIG. 10 is a partially enlarged front view showing the lower cloth moving device.

FIG. 11 is an enlarged side view of the lower cloth moving device.

FIG. 12 is a partially enlarged perspective view of a lower cloth moving device and an oil pan.

FIG. 13 is a vertical sectional front view taken along the line G-G in FIG.

FIG. 14 is a vertical sectional front view taken along the line JJ of FIG.

FIG. 15 is an enlarged front view of the auxiliary upper cloth moving device.

FIG. 16 is a mechanism diagram of a cloth edge control device.

FIG. 17 is a configuration diagram of an upper cloth edge detection mechanism.

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

FIG. 19 is a block diagram of a control system of the sewing device.

FIG. 20 is a schematic flowchart of a cloth edge aligning and sewing control routine.

FIG. 21 is a schematic flowchart of a sewing parameter setting process control routine.

FIG. 22 is a schematic flowchart of a sewing preparation process control routine.

FIG. 23 is a schematic flowchart of a sewing processing control routine.

FIG. 24 is a schematic flowchart of a routine of operation confirmation processing control.

FIG. 25 is a schematic flowchart of upper cloth cloth edge position detection processing control.

FIG. 26 is a schematic flowchart of upper cloth shift amount calculation processing control.

FIG. 27 is a schematic flowchart of a lower cloth cloth edge position detection processing control.

FIG. 28 is a schematic flowchart of a lower cloth shift amount calculation processing control.

FIG. 29 is a partial plan view of the upper cloth for explaining the sewing section of the upper cloth.

FIG. 30 is a table for explaining the data structure in the cover cloth parameter table.

[Explanation of symbols]

 SM sewing device M industrial lockstitch sewing machine 32 cloth support plate 77 oil pan 77a bobbin replacement opening 80 lower cloth moving mechanism 87 lower cloth feed roller 87 89 timing pulley 90 timing belt 142 lower cloth moving motor 148 lower cloth driving Cylinder

Claims (2)

[Claims] 1. A cloth receiving member disposed on the upper surface of a bed on the upper side of a work cloth, and a cloth receiving member that can be retracted from the upper surface of the bed from below, and is pressed from below by sandwiching the work cloth between the cloth receiving members. A horizontal cloth feed device for a sewing machine, comprising: a roller member that is movable in a direction intersecting the cloth feed direction; and a rotation driving means that rotationally drives the roller member, wherein the roller member is formed at the bottom of the bed. The sewing machine is configured to be selectively switchable between a use position exposed on the bed upper surface through the bobbin replacement opening and an unused position retracted below the bobbin replacement opening. Processing cloth traverse device. 2. A roller switching means for selectively switching the roller member between the use position and the non-use position is provided, and the roller switching means presses the roller member against the cloth receiving member. 2. The work cloth lateral feed device for a sewing machine according to claim 1, wherein the work cloth lateral feed device comprises the fluid pressure cylinder.