KR20010107705A - Cloth opening device for buttonholing sewing machine - Google Patents

Abstract

It is an object of the present invention to provide a cloth opening device for a sewing machine, which can convert a cloth opening operation performed at a predetermined time to be valid or invalid.

As a means for solving the problem, a pair of fabric fixing members are arranged to be movable in left and right directions so as to be able to fix the to-be-sealed material so as to approach or separate the shandong route between the shank routes of the cloth cutting blades 7. (11) and a pair of cloth opening means 21 for enabling a cloth opening operation in which the pair of cloth fixing members are approached or spaced apart from each other in a moving path, and the cloth opening operation is performed by electrical control. Cloth opening of a knitting machine having drive means 36 and 98 and control means 70 for driving a drive means at a predetermined time while forming a predetermined seam seam on the sewing object based on the set data. In the apparatus, the selection means 114 which can convert the cloth opening operation performed by the driving means at a predetermined time into valid or invalid is arranged.

Description

Cloth opening device of knitting machine {CLOTH OPENING DEVICE FOR BUTTONHOLING SEWING MACHINE}

According to the present invention, the cloth opening of the sewing machine for fixing the to-be-sealed material by a pair of cloth fixing members and then pulling the fabric to the left or right by the movement of the cloth fixing members in the mutual space direction and then opening the groove of the sewing material to be pulled out. Relates to a device.

For example, in an eyelet sewing machine, a pair of left and right cloth fixing members for placing a sewing object are placed on a transfer table that is movable to the bed, and the cloth fixing member fixes the to-be-sealed material. The cloth opening device makes it possible to move to approach or separate the shandong route of the cloth cutting blade.

In the case of a prior knife, a groove is formed in the object to be sewn with a cloth cutting knife, and then the cloth fixing member is separated by a cloth opening device to perform cutting while the groove is opened. In the case of not using a cloth cutting blade, the cloth fixing member is separated by a cloth opening device, and the sewing is carried out while the sewing object is pulled out, and in the case of a later blade, the sewing blade is sewn with a cloth cutting blade after sewing. Put a groove in the water. Sunmes are usually done when weaving on soft items such as knit paper or thin cloth, and Hummes is important or preferentially when we are cutting on items such as clothes and jeans or weaving grooves. It is done during sewing.

In the cloth opening device of the conventional knitting machine, the cloth fixing device is operated after the cloth fixing member fixes the object to be sewn before the sewing operation is performed, and the cloth fixing member is separated. However, there is a case where the cloth opening device does not operate when the sewing cycle is completed after sewing cycles are completed due to, for example, thread cutting or rod control deviation. Particularly, when this sewing work is performed in the post-sew setting state where the sewing is performed before the groove is formed, the sewing is performed while the groove of the sewing material having already been cut is opened. When the opened object is shifted, the seam width is narrowed, so that the seam width cannot be matched with the seam width of other sewing eyelets, thereby significantly lowering the commodity value.

For this reason, if an adjusting device for mechanically adjusting the cloth opening amount is arranged, the cloth opening amount is set to zero by the adjusting device or mechanically fixed so that the cloth opening device is not forcibly operated by using a part such as a stopper. The groove was sewn again so that the grooves did not open. However, it takes time to attach such parts and adjust the amount of cloth opening, which lowers the work efficiency.

In addition, the adjustment of the cloth opening amount requires a fine adjustment according to the attachment state or sewing conditions of the individual sewing machine, so once the machine adjustment is changed, it is very difficult to return to the original state. Therefore, it is not desirable to make this adjustment for temporary use such as sewing work again.

Accordingly, an object of the present invention is to provide a cloth opening apparatus for a sewing machine, which can be easily and effectively converted into a cloth opening operation performed at a predetermined time, which is performed to solve the above problems.

1 is a side view of a sewing machine to which the cloth opening device of the present embodiment is applied.

Figure 2 is a side view showing the cloth pressing operation mechanism of Figure 1 sewing machine.

3 is a plan view of the sewing machine of FIG.

4 is a plan view omitting the base plate of the right side of the sewing machine of FIG.

FIG. 5 is a plan view showing a cloth opening mechanism on the right side of the sewing machine in FIG. 3; FIG.

FIG. 6 is a Y perspective view of FIG. 5. FIG.

FIG. 7 is an X-view of FIG. 5. FIG.

8 is a control block diagram of a sewing machine of the present embodiment.

9 shows the operation panel of this embodiment.

Fig. 10 is a flowchart showing the operation of the cloth opening device of the sewing machine according to the present embodiment.

Fig. 11 is a flowchart showing the operation of the cloth opening device of the sewing machine according to the present embodiment.

Fig. 12 is a flowchart showing the operation of the cloth opening device of the sewing machine according to the present embodiment.

※ Explanation of symbols about main part of drawing ※

7: cloth cutting blade, 8: cloth pressing part (cloth fixing member)

11: cloth support plate (cloth fixing member), 21: cloth opening means

36,98: drive means, 70: control device

75: operation panel, 114: new sewing mode selection switch

In order to achieve the above object, according to the present invention, a pair of fabric fastenings are arranged to be movable to the left and right to access or separate the shandong route between the shanghai route of the cloth-cutting scalpel by being able to fix the sewing object therebetween. A member, a pair of cloth opening means for enabling a cloth opening operation in which the pair of cloth fixing members are separated from an approaching state of the moving path, and a drive for performing the cloth opening operation by electrical control. A cloth opening device for a knitting machine, comprising a means and a control means for driving the driving means at a predetermined time while forming a predetermined seam on the sewing object based on the set data. Arranging selection means for converting the cloth opening operation performed at the predetermined time into valid or invalid; The cloth opening device of the four stitch sewing machine according to Gong, is provided.

Preferably, when the cloth opening operation is invalidated, the pair of cloth fixing members are kept in a spaced state. Alternatively, when the cloth opening operation is invalidated, the pair of cloth fixing members are kept in an approaching state.

Typically, the cloth opening operation is performed after the cloth fixing by the cloth fixing member or before the sewing operation when the cloth opening operation is effective, and the cloth is opened before the cloth fixing by the cloth fixing member when the cloth opening operation is invalidated. The opening operation is being completed.

In another aspect, the present invention is a pair of fabric fastening is arranged to be movable in the left and right directions so as to be able to secure the sewing material in cooperation with the cloth pressing portion to access or space the shandong path between the shank path of the cloth cutting blades. A member, a pair of cloth opening means for enabling a cloth opening operation in which the pair of cloth fixing members are separated from an approaching state of the moving path, and a drive for performing the cloth opening operation by electrical control. 12. A cloth opening apparatus for a knitting machine, comprising: means and a control means for driving the driving means at a predetermined time while forming a predetermined seam on the sewing object based on the set data. And selecting means for converting the folding operation of the cloth fixing member into valid or invalid.

An embodiment of a cloth opening device (abbreviated as next cloth opening device) of a sewing machine of the present invention will be described with reference to the following drawings.

First, the schematic configuration of a knitting machine will be briefly described with reference to FIGS. 1 and 2. The sewing machine base 1 has an arm portion 3 extending from the upper part to the front part of the bed part 2 forming a substantially rectangular box shape. The bottom cover 4 is attached to the lower part of the bed part 2. .

The needle bar 6 with the sewing needle 5 is disposed at the distal end of the arm 3 so as to be movable, while the bed part 2 is located just below the needle bar 6 so that the needle bar 6 By operating in synchronism with the shanghai east, the looper (not shown) which cooperates with the needle bar 5 and forms the seam in the to-be-sealed object is arrange | positioned.

In addition, a cloth cutting scalpel 7 is disposed on the arm part 3 so as to be movable, and a scalpel base (not shown) is disposed on the bed part 2. In the cloth cutting scalpel 7, grooves having an eyelet hole shape are formed in the object to be sealed.

In FIG. 1, the top and bottom plates 11 are disposed on the left and right pairs on the conveyer 10, and the top and bottom portions 8 are arranged on the left and right pairs so as to be able to move to the top and bottom plates 11, respectively. The cloth receiving plate 11 and the cloth presser 8 constitute a cloth fixing member.

Press the sewing material placed on the base plate 11 by the cloth pressing part 8, and in this state, the conveyance stand 10 is moved according to the shape of the eyelet hole, and sewing is sequentially made on the periphery of the eyelet. It is supposed to be done. In addition, the conveyer 10 is moved by the conveyer moving means 12 arrange | positioned under it and the bed part 2.

Referring to the mechanism for operating the cloth pressing portion 8, as shown in Figure 2, the arm portion 13 having the cloth pressing portion 8 at its tip has a base plate 11 through the shaft 13a. It is axially supported so as to be freely rotated, and at its proximal end, an inverted c-shaped receiving arm portion 14 extending toward the back of the cloth receiving plate 11 is formed through a hole 11a formed in the cloth receiving plate 11. do.

In addition, the transfer carriage 10 is disposed so that the link 15 freely rotates through the shaft 16 extending from side to side, and a pin 17 attached to one end thereof is connected to the receiving arm 14. In this case, the receiving arm 14 can freely slide in the left and right directions with respect to the pin 17.

In addition, the pin 18 attached to the other end of the link 15 is connected via a joint 20 to the rod 19a of the pushing drive body 19 formed of the air cylinder disposed on the carriage 10. . In the above-described mechanism, when the rod 19a is extended, the cloth pressing portion 8 rotates downward, and the to-be-sealed material is pressed by the cloth pressing plate 11 by the cloth pressing portion 8.

Next, the cloth opening apparatus will be described with reference to FIGS. 3 to 7.

The transfer table 10 has a pair of cloth plates 11 and 11 on the left and right sides of the cloth cutting scalpel 7 between the shank-dong paths and the left and right directions (arrow A). It is arrange | positioned so that the movement to B direction is possible. In addition, in FIG. 4, the right side receiving board 11 is abbreviate | omitted in order to show the cloth opening means 21. As shown in FIG.

The cloth opening means 21 are respectively disposed on the left and right sides of the cloth cutting blade 7 with the shank-dong paths interposed therebetween, and the pair of cloth receiving plates 11 and 11 are moved in the left and right directions, respectively. It is fixed to this cloth receiving plate 11 (11), and is made to open and close the said groove | channel of the to-be-sealed object by which the groove | channel was formed by the cloth cutting blade 7.

The cloth opening means 21 on the right side is a cam plate (operator) arranged to be movable in the front-rear direction (arrow C and D direction) orthogonal to the moving direction (arrow A and B directions) of the cloth receiving plate 11 ( 22), a drive link (drive member) 23 which is connected to the cam plate 22 to move the cam plate 22 in the front-rear direction, and is connected to the cloth receiving plate 11 of the cam plate 22. Rail plates (followers) 24 and 24 which move in the left-right direction in conjunction with forward and backward movement are provided.

In FIG. 5, the rail plate 24 is long left and right, and long holes 24a and 24a are formed at left and right ends thereof, respectively, and short screws 26 and 26 are formed in the long holes 24a and 24a. By inserting the single screw 26, 26 into the feeder 10 by inserting the rail plate 24, the rail plate 24 is attached to the feeder 10 so that linear movement is possible in the horizontal direction. In addition, a roller 27 is rotatably attached to the lower surface of the right end of each rail plate 24 by a single screw 28.

The cam plate 22 is long in the front and rear (arrow C and D directions), and long and long holes 22a and 22a are formed at the front and rear ends thereof, respectively, and the short screw 29 is formed in the long holes 22a and 22a. The cam plate 22 is attached to the feeder 10 so that the linear movement of the cam plate 22 is possible in the front-rear direction by inserting the 29 into the feeder 10 by twisting the short screws 29 and 29 to the feeder 10.

The cam plate 22 is disposed below the rail plates 24 and 24, and inclined surfaces 30 and 30 are formed at the front and rear ends of the cam plate 22, respectively. Since these inclined surfaces 30 and 30 incline to the left gradually toward the rear, the inclined surfaces 30 and 30 are in contact with the rollers 27 and 27.

When the cam plate 22 moves back and forth, the rollers 27 and 27 move relative to the inclined surfaces 30 and 30 to move left and right, and thus the rail plates 24 and 24. It is supposed to move left and right. That is, the rail plates 24 and 24 are moved to the left and right in association with the front and rear movement of the cam plates 24 and 24.

The drive link 23 is disposed between the rail plates 24 and 24 and on the right side of the cam plate 22, and the center portion thereof is attached to the feed table 10 by a single screw 34. The screw 34 is attached to the feed table 10 so as to rotate freely.

A long hole 23a is formed at one end of the drive link 23, and a short screw 35 is inserted into the long hole 23a to twist the short screw 35 in the center of the cam plate 22. One end of the drive link 23 is connected to the center portion of the cam plate 22 and to be free to slide.

Meanwhile, the other end of the drive link 23 is rotatably connected to the piston rod 36a of the air cylinder 36 through the knuckle 37. The air cylinder 36 is disposed forward and backward on the right edge of the carriage 10, and the rear end thereof is rotatably attached to the carriage 10 through the pin 38. The air cylinder 36 is connected to an air supply source such as a compressor (not shown) through an electromagnetic valve (not shown) and an air hose, and the piston rod 36a is operated by a control device.

Then, the drive link 23 is rotated by the piston rod 36a of the air cylinder 36 as the end screw 34 as a point, and the drive link 23 is linearly moved before and after the cam plate 22 by the rotation of the drive link 23. The rail plates 24 and 24 are linearly moved left and right through the inclined surfaces 30 and 30 and the rollers 27 and 27 by the linear movement of the cam plate 22 before and after.

Further, the movement stroke of the drive link 23, that is, the movement stroke in the front-rear direction of the end of the drive link 23 is set to be longer than the movement stroke in the left and right directions of the rail plates 24 and 24. FIG. For example, the movement stroke of the drive link 23 is set to the movement stroke in the left and right directions of the rail plate = 5: 1.

In the said rail board 24 and 24, the adjustment member 40 which adjusts the positional relationship of each rail board 24 and the said cam board 22 is arrange | positioned, respectively.

The adjusting member 40 is configured as follows.

The roll base plate 41 is attached to the lower surface of the right end of each rail plate 24 so that the attachment position can be adjusted by the fixing screws 42 and 42. That is, two long holes (not shown) are formed in each rail plate 24 so that a fixed screw 42 is inserted into each long hole, and the fixed screw 42 is twisted into the roll base 41 to roll the roll plate 41. ) Is fixed to the rail plate 42. Therefore, loosen the set screw 42 and move the roll base plate 41 slightly by the long hole relative to the rail plate 24 to adjust the position of the roll base plate 41, and then tighten the set screw 42. The adjusted roll base plate 41 may be fixed to the rail plate 24.

The roller 27 is rotatably attached to the roller plate 41 by a single screw 28. Therefore, the position of the roller 27 is adjusted by adjusting the attachment position of the roller base 41, and accordingly, the positional relationship between each rail plate 24 and the cam plate 22 is adjusted.

The adjustment position of the roll base plate 41 is parallel to the left and right cloth receiving plate 11, 11 disposed on the transfer table (10). In other words, the left and right positions of the cloth opening receiving pins 25 and 25 for connecting the rail plates 24 and 24 to the cloth receiving plate 11 are arranged on the cloth opening plate 45 to be described later. Location.

That is, the two rail plates 24 when the two front and rear rollers 27 and 27 disposed on the rail plates 24 and 24 contact the inclined surfaces 30 and 30 formed before and after the cam plate 22. By adjusting the positions of the rollers 27 and 27 to the left and right positions of the 24, it is possible to adjust the left and right positions of the cloth opening receiving pins 25 and 25 to be equal to each other. The positional relationship between the 24 and the cam plate 22 is adjusted.

The cloth opening plate (operating member) 45 is fixed to the rail plates 24 and 24 so as to connect them, and the cloth receiving plate 11 is connected to the cloth opening plate 45.

That is, the cloth opening plate 45 is formed in an approximately equilateral triangle in plan view, and the length of the bottom surface thereof is set to be approximately equal to the distance between the front and rear rail plates 24 and 24. In addition, two holes are formed in the bottom edge portion of the cloth opening plate 45, and the rail plate 24 is formed by inserting a screw 46 into the hole and twisting the end portions of the rail plates 24 and 24. The cloth opening plate 45 is fixed by connecting them to the 24).

In addition, a long hole is formed in each of the bottom edges of the cloth opening plate 45, and the head of the single screw 26 for attaching the rail plate 24 to the feed table 10 is exposed to the long hole.

In addition, cloth opening receiving pins 25 and 25 are disposed at the bottom edges of the cloth opening plate 45, and holes are formed in the cloth receiving plate 11. The base plate 11 is connected to the cloth opening plate 45 by inserting it into (11b) (11b). That is, the cloth receiving plate 11 is connected to the front and rear two rail plates 24 and 24 through the cloth opening plate 45.

In addition, one end of the spring 47 is locked to the top of the cloth opening plate 45, and the other end of the spring 47 is locked to the spring 48 attached to the feed table 10. The spring 47 is disposed in a tensioned state to bias the cloth opening plate 45 in the direction of the arrow A by the force of the spring 47, and thus, a rolling table attached to the rail plates 24 and 24. 27 and 27 are in contact with the inclined surfaces 30 and 30 in a state where the cam plate 22 is biased to the left.

In the vicinity of the drive link 23, the drive link 23 moves both the position where the base plate 11 is closest to the shank east path of the cloth cutting blade 7, and the position that is closest to the drive link 23. The regulating means 50 and 51 which regulate the range are arrange | positioned.

The restricting means 51 performs the positioning of the base plate 11 at the time of sewing and is configured as follows.

That is, the screw hole 52 is formed in the said conveyance table 10, The stopper screw 53 is screwed in this screw hole 52, and is fixed by the nut 54. As shown in FIG. The tip of the drive link 23 is in contact with the tip of the stopper screw 53 to restrict the rotation of the drive link 23 in the clockwise direction.

In the restricting means 51 as described above, the tip of the drive link 23 is in contact with the rear side of the cam plate 22 (arrow D direction), thereby restricting the movement of the rail plates 24 and 24 and the cloth opening plate. Since the movement to the right side (opening side) of the 45 is regulated, the movement to the opening side of the base plate 11 connected to the cloth opening plate 45 is regulated.

Therefore, by controlling the position of the stopper screw 53, it is possible to regulate the movement (position control) to the opening side of the base plate 11.

In addition, since the restricting means 51 is disposed in the vicinity of the drive link 23 far from the base plate 11 and also at the front end of the transfer table 10, the restricting means 51 moves to the opening side of the base plate 11. The adjustment operation of the movement regulation can be easily performed without placing the sewing object on the cloth receiving plate 11 so that the cloth cutting blade 7 and the like are not disturbed.

The restricting means 50 is configured to position the base plate 11 at an initial position and is configured as follows.

That is, the long hole 55 is formed on the side of the transfer table 10 longer than the amount of movement before and after the end of the drive link 23 near the connection portion between the drive link 23 and the air cylinder 36 and the knuckle 37. do.

In addition, a cloth opening stopper plate 56 is disposed on an inner side surface of the portion where the long hole 55 of the transfer table 10 is formed, and the cloth opening stopper plate 56 penetrates the long hole 55 to fix a screw. (57) (57) is lodged. The cloth opening stopper plate 56 is fixed to the feed table 10 by tightening the fixing screws 57 and 57 so as to be movable back and forth by loosening the fixing screws 57 and 57. In addition, a stopper cover 58 concealing the long hole 55 is inserted between the fixing screws 57 and 57 with the transfer table 10 and fixed by the fixing screws 57 and 57.

In addition, a long hole 60 is formed in the cloth opening stopper plate 56. The long hole 60 is shorter than the long hole 55 and longer than the amount of movement before and after the end of the drive link 23. The long hole 60 extends to the end of the drive link 23 in the long hole 60. The part 23a is inserted. In addition, this extension part 23a also enters the said long hole 55 in the range which does not contact the said stopper cover 58. As shown in FIG.

The front end of the cloth opening stopper plate 56 is bent into an L shape, and a screw hole 61 is formed in this portion. On the other hand, a hole 3 is formed in the front end face 62 of the side of the conveyer 10, and the adjustment screw 64 is inserted into the hole 63, and the adjustment screw 64 is the screw hole 61. Screwed in. Therefore, the cloth opening stopper plate 56 is moved back and forth by loosening the fixing screws 57 and 57 and then turning the adjusting screw 64.

In the regulating means 50 of the above configuration, the piston rod 36a of the air cylinder 36 is retracted, the drive link 23 rotates counterclockwise, and the extension portion 23a moves in the direction of arrow D. By contacting the end face of the long hole 60 of the cloth opening stopper plate 56, the movement range of the drive link 23 is regulated, and accordingly, the position of the closing side of the cloth receiving plate 11 is regulated.

That is, since the extension part 23a of the drive link 23 touches the end surface of the long hole 60, the movement of the cam plate 22 toward the front side (arrow C direction) is regulated, and thus, the rail plates 24 and 24, Since movement to the left side (closing side) of the cloth opening plate 45 is regulated, movement to the closing side of the cloth receiving plate 11 connected to the cloth opening plate 45 is regulated.

Therefore, by adjusting the position of the cloth opening stopper plate 56 by the adjustment screw 64, it is possible to regulate movement to the closing side of the cloth receiving plate 11 (position control).

The cloth opening operation by the cloth opening means 21 having the above configuration will be briefly described.

First, the piston rod 36a of the air cylinder 36 is in the inlet position, and the rail plates 24 and 24 are close to the closing side (the base plate 11 is closest to the shanghai-dong path of the cloth cutting blade). Location).

When the air cylinder 36 is operated in the initial state and the piston rod 36a is tensioned to the state shown in Figs. 4 and 5, the drive link 23 rotates in the clockwise direction. One end of 23 moves backward (arrow D direction).

When one end of the drive link 23 is moved to the rear, the cam plate 22 is linearly moved to the rear, whereby the rail plates 24 and 24 are linearly moved to the right (arrow B direction). 24 and 24, the base plate 11 connected by the cloth opening receiving pins 25 and 25 is moved to the right, so that the groove of the object to be fixed to the base plate 11 is opened. do.

When the extension portion 23a of the drive link 23 comes in contact with the tip of the stopper screw 53 of the restricting means 51, the operation of the drive link 23 stops, whereby the top plate 11 The movement also stops, and the cloth opening operation ends.

On the other hand, when the groove of the to-be-sealed object is closed, the groove of the to-be-sealed object is retracted by operating the cloth opening means 21 in the reverse direction while the extending portion 23a of the drive link 23 is in contact with the stopper screw 53. . In addition, the extension part 23a of the drive link 23 is in contact with the end of the long hole 60 of the cloth opening stopper plate 56 of the restricting means 50 so that the operation of the drive link 23 is stopped and thus the cloth The movement of the receiving plate 11 also stops, and the cloth closing operation ends.

The adjusting means 50 adjusts the amount of cloth opening as follows.

First, the piston rod 36a of the air cylinder 36 is placed in a retracted state, and the directing portion 23a of the drive link 23 is brought into contact with the end surface of the long hole 60 of the cloth opening stopper plate 56.

Next, in this state, the fixing screws 57 and 57 are loosened, and when the adjusting screw 64 is turned, the cloth opening stopper plate 56 is moved back and forth, and the driving link is in contact with the end face of the long hole 60 ( 23, the extension part 23a moves back and forth, and the drive link 23 rotates by using the single screw 34 as a point.

In this case, turning the adjusting screw 64 to the right moves the cloth opening stopper plate 56 to the front (arrow C direction), and accordingly, the drive link 23 rotates clockwise so that the cam plate 22 is to the rear (arrow D). Direction), the cloth opening plate 45 moves to the right (arrow B direction). When the cloth opening plate 45 moves to the right, the cloth receiving plate 11 connected thereto moves to the right.

At this time, since the position of the base plate 11 is a regulating position toward the closing side, the distance between this position and the regulating position on the opening side is shortened, so that the amount of movement to the opening side of the base plate 11 becomes small. The opening amount becomes small.

On the other hand, when the adjusting screw 64 is turned to the left, the cloth opening stopper plate 56 moves to the rear side (arrow D direction), and the driving link 23 rotates counterclockwise, so that the cam plate 22 moves forward ( Arrow direction C), the cloth opening plate 45 moves to the left side (arrow A direction). When the cloth opening plate 45 moves to the left side, the cloth receiving plate 11 connected thereto moves to the left side. At this time, since the position of the base plate 11 is a regulating position toward the closing side, the distance between this position and the regulating position on the opening side becomes long, so that the amount of movement to the opening side of the base plate 11 becomes large, and as a result, The opening amount increases.

When the amount of cloth opening is adjusted as described above, the fixing screws 57 and 57 are tightened to fix the cloth opening stopper plate 56 to the feed table 10. In this way, the amount of cloth opening can be easily adjusted in the regulating means 50.

The regulating means 50 is arranged in the vicinity of the drive link 23, and since the moving stroke of the drive link 23 is longer than the moving stroke of the rail plates 24 and 24, the adjusting screw 64 is removed. By rotating, fine adjustment of the movement regulation can be easily performed on the closing side of the base plate 11 (the position where the cloth fixing member is closest to the shanghai-dong path of the cloth cutting blade).

In addition, the restricting means 50 is disposed in the vicinity of the drive link 23 far from the base plate 11 and also at the right edge of the transfer table 10 to the closing side of the base plate 11. The adjustment operation of the movement regulation can be easily performed in a state where the cloth cutting blade 7 or the like is not obstructed and the object to be sealed is placed on the cloth receiving plate 11.

In addition, the restraining means 50 and 51 are all configured to control the movement range of the drive link 23 on the outside of the sewing machine frame, so that the top plate 11 in a state where the cover of the transport table 10 is mounted. Control of movement) can be performed.

8 is a control block diagram of a sewing machine of the present invention. The control device 70 is based on a program for controlling a sewing machine or a ROM 71 for storing data necessary for sewing, a CPU 72 for performing various calculations and processing, and data input or set in the operation panel 75, a program. And a RAM 73 in which data calculated by the CPU 72 and the like are stored. The operation panel 75, the start switch 76, and the push switch 77 are connected to the CPU 72 via the input / output interface 74.

The main shaft (not shown) of the sewing machine is rotatable by the servo motor 80, and the feed table 10 shown in FIG. 1 is moved in the XY direction by the X-axis pulse motor 81 and the Y-axis pulse motor 82. The needle rod 6 of FIG. 1 and the looper (not shown) are rotatable by the Z-axis pulse motor 83 for sewing the eyelet portion.

These four motors 80 to 83 are connected to the CPU 72 via the motor drive circuits 84 to 87 and the input / output interface 74, respectively. The feed table 10 can detect the origin by the X-axis origin sensor 88 and the Y-axis origin sensor 89, and the origin of the needle rod and the looper is the phase of the rotation axis of the Z-axis pulse motor 83. It is possible to detect by the Z-axis origin sensor 90 which detects. These X, Y and Z axis home sensors 88, 89 and 90 are connected to the CPU 72 via the input / output interface 74.

The cloth cutting portion 7 shown in FIG. 1 is made by the cloth cutting cylinder 92, and the cloth pressing portion 8 is pressed by a driving body (air cylinder) 19 for pressing the cloth opening means 21 by means of an air cylinder ( Each of these cylinders 92, 19, 36 is connected to the CPU 72 via the cylinder drive solenoid valves 94, 96, 98 and the input / output interface 74, respectively.

9 shows the operation panel 75. The operation panel 75 includes a ready switch 102 for converting a sewing state capable of starting a sewing machine and a ready state for setting data, a mode display unit 104 for displaying whether a sewing state or a ready state, and a pattern to be used. A selector switch 106 for selecting data, a display unit 108 for displaying the selected pattern data number, a selector switch 110 for selecting the presence or absence of an operation (dropping of a knife), and the selector switch 110 An operation display unit 112 for displaying the presence or absence of a selected drop in the selection switch, a selection switch 114 for selecting a normal mode and two kinds of sewing modes (cloth opening ON mode and cloth opening OFF mode), and the selection switch 114 And a mode display unit 116 for displaying the re-sewing mode selected in the above, and a switch group 118 for data item setting.

The preparation switch 102 is switched to the sewing state and the ready state every time it is pressed, and the selection switch 110 is switched whether or not the falling of the scalpel each time.

The mode display section 104 is constituted by LEDs, for example, lights up in a sewing state and turns off in a ready state. Similarly, the operation display unit 112 is also constituted by LEDs, for example, lights when there is an operation of the cloth cutting blade.

The pattern selection switch 106 is a switch for selecting a pattern number by increasing or decreasing the number of the display unit 108 by operating the + and-keys.

The switch group 118 includes a selection switch 120 of a data item, a display part 122 of a data item, a data selection switch 124 and a data display part 126, and a selection switch 128 of a data setting mode. .

There are several data items. For example, the number of rotations, the number of needles, etc. are assigned to each item number, and the selected item No. is displayed on the item display unit 122 by operating the + and-keys of the selection switch 120. Then, by operating the + and-keys of the selector switch 124, each data item and its data are selected by increasing or decreasing the number of the data display unit 126 and fitting the desired number of revolutions or the number of needles. It is set by the CPU 72 as selected.

The selection switch 114 in the sewing mode is switched from the normal mode to the cloth opening ON mode, from the cloth opening mode to the cloth opening OFF mode, and from the cloth opening OFF mode to the normal mode with each press.

The normal mode is a mode in which normal sewing is performed, and the cloth opening operation is also normally performed at a predetermined time. The cloth opening ON mode is a mode in which a cloth opening operation is performed before pressing the cloth onto the cloth receiving plate by the cloth pressing portion, and thereafter, the sewing operation is performed in that state without closing the cloth receiving plate. The cloth opening OFF mode is a mode for sewing work in a closed state without spreading the base plate.

In the following configuration, various operation mode settings and control operations performed by the control device 70 based on the operation of the operation panel 75 by the operator will be described based on the flowcharts of FIGS. 10 to 12. In the initial state, the base plate 11 is in a closed state.

After the power is turned on, in step 1 of the flowchart of FIG. 10, the operator waits for a pattern input to the operation panel 75. If the selector switch 106 is pressed, the pattern No. is updated in step 2, and the flow advances to step 3. FIG.

If the selection switch 106 is not pressed, the flow advances to step 3 to determine whether the selection switch 128 of the data setting mode has been pressed.

If the selection switch 128 is pressed, data setting is performed in step 4, and the procedure proceeds to step 5. If the data setting mode selection switch 128 is not pressed, the flow advances to step 5 to determine whether the selection switch 110 has been pressed.

If the selector switch 110 is pressed, the flow advances to step 6, and if it is determined whether the cloth cutting blade is in operation, the flow advances to step 9 after the setting of the blade is made in step 7. If there is no operation of the cloth cutting blade, the process proceeds to Step 9 after the setting is made that there is no blade in Step 8.

In step 9, it is determined whether or not the selection switch 114 of the sewing mode is sewn again, and if it is pressed, the process proceeds to step 10;

In step 10, it is determined again whether or not the selection switch 114 is pressed. If it is pressed, the cloth opening OFF mode is set in step 11, and the process proceeds to step 14, and in step 12, the cloth opening mode is pressed. After setting ON, go to Step 14. In step 13, the normal mode is set, and then the procedure goes to step 14.

In step 14, it is determined whether or not the ready switch 102 is pressed, and when it is pressed, various settings are finished based on the operation of various switches of the operation panel 75, and the flow proceeds to step 15 of the flowchart of FIG. If the ready switch is not pressed, return to step 1.

In step 15, seam data is created based on the set data, and in step 16, home search, transfer of needle bar and looper home search is performed.

In the next step 17, it is determined whether the cloth opening is in the ON mode, and in the case of the cloth opening ON mode, the cloth opening mechanism is operated in step 18 to bring the cloth receiving plate 11 to the opened state, and then the process proceeds to step 19.

If it is not the cloth opening ON mode (in the case of the normal mode or the cloth opening OFF mode), the flow proceeds directly to Step 19 to determine whether the ready switch 102 is pressed.

When the ready switch 102 is pressed, it is determined whether or not the cloth opening ON mode is reached in step 20. When the preparation switch 102 is in the cloth opening ON mode, the cloth receiving plate 11 is approached and closed. If it is not the cloth opening ON mode in step 20, the flow returns to step 1 as it is.

If the ready switch 102 is not pressed in step 19, the flow advances to step 22 to determine whether the push switch 77 has been pressed. If it is not pressed, the flow returns to step 19. If it is pressed, the flow advances to step 23 to lower the pressing portion, and the flow advances to step 24.

In step 24, it is determined whether the push switch 77 is pressed again. If it is pressed, the push part is raised in step 25, and the process returns to step 19.

If the push switch 77 is not pressed in step 24, the flow advances to step 26. If it is determined that the start switch 76 has been pressed, the flow returns to step 24 if it is not pressed. Proceed to step 27 of.

In step 27, it is determined whether there is a cloth cutting knife operation, and when there is no, the flow proceeds to step 29. If there is, the cloth cutting cylinder 92 is driven in step 28 to perform cloth cutting.

In step 29, it is determined whether it is the normal mode. In the case of the normal mode, the flow advances to step 30. After the cloth opening mechanism is operated, the base plate 11 is opened, and the flow advances to step 31. In a case other than the normal mode (the cloth opening ON mode or the cloth opening OFF mode), the operations of steps 31 to 34 are executed without performing the cloth opening operation.

In step 31, the feed table is moved to the sewing start position, and in step 32, the sewing machine spindle is rotated to sew. After sewing is finished, the feed bar is moved to the home position in step 33, and the needle bar and looper are moved to the home position. In step 34, the pressing part is raised to proceed to step 35.

In step 35, it is determined whether it is the normal mode, and in the normal mode, the cloth plate 11 is closed in step 36, and the flow returns to step 19, whereby the operator waits for operation of the operation panel. If it is not normal mode in step 35, it will return to step 19 as it is.

As described above, the cloth opening ON mode is selected by pressing the selection switch 114 of the sewing mode of the operation panel 75 of FIG. 9 once again, and steps 9, 10, and 12 of FIG. Is set. By this setting, step 18 is executed, and the operations of steps 30 and 36 are omitted, so that the fabric plate 11 is opened until the sewing set on the pressing portion ends sewing again.

Therefore, when sewing again, it becomes easy to match the sewing position to the sewing position already sewn. In addition, since the cloth opening is opened, the position shift of the cloth does not freeze during sewing to sew again.

In addition, the cloth opening OFF mode is selected by pressing the selection switch 114 twice, and steps 9, 10, and 11 of FIG. 10 are executed to set the cloth opening OFF mode. By this setting, step 18 is executed, and the operations of steps 30 and 36 are omitted, so that sewing of sewing the cloth plate 11 again without being opened is finished.

Therefore, when sewing again, it becomes easy to match the sewing position to the sewing position already sewn. Moreover, since the cloth opening is closed, the position shift of the cloth does not occur during sewing to sew again.

In the above flow chart, there is no sun scalpel or a scalpel drop, but in the case of the back scalpel, steps 27 and 28 are omitted, so that the straight line part is sewn in the sewing operation of step 32. Since the driving is only different in that it is performed, other steps are the same as those of the sun knife.

In the above embodiment, three modes (normal mode and two types of sewing mode) can be selected by the selection switch 114 of the sewing mode of the operation panel 75 of FIG. 9, but the sewing mode is cloth. Only the opening ON mode or the cloth opening OFF mode can be set. In this case, the mode display unit 116 is composed of a single LED similarly to the display units 104 and 112. For example, the mode display unit 116 is turned on in the sewing mode and turned off in the normal mode.

Further, a mechanical means such as a clutch may be disposed between the driving means and the cloth opening means, and when the invalidation is made effective by the selection means, the mechanical means may be operated to make the action of the cloth opening means invalid.

According to the present invention, selection means is provided which enables the driving means to convert the cloth opening operation performed at a predetermined time to be valid or invalid.

This selection means makes it possible to perform a temporary and simple use such as converting the cloth opening means into invalidity and sewing again. In particular, the sewing value of the sewing thread was prevented from narrowing when sewing the Humes sewing product again.

After sewing is finished, the normal opening can be achieved by converting the cloth opening operation to effective, and the amount of cloth opening can be readjusted as in the case of sewing again by adjusting the cloth opening amount to 0 by a conventional adjusting device. no need.

Since the fabric fixing member can be opened or closed until sewing is finished again, the sewing position can be easily matched to the sewing shape already sewn when sewing again, and the fabric is being sewn again. The position shift of does not occur.

In addition, by arranging selection means for converting the folding action of the cloth fixing member by the driving means into an effective or invalid, the cloth fixing member can be prevented from moving in the folding direction at the time of invalidation. Can be removed.

Claims (5)

A pair of fabric fixing members arranged to be movable in a lateral direction so as to fix the to-be-encapsulated object so as to approach or separate the shandong route of the cloth cutting blades between each other; A pair of cloth opening means for enabling a cloth opening operation of bringing the pair of cloth fixing members into a spaced apart state from an approach state with respect to the shandong route; Drive means for performing the cloth opening operation by electrical control; A cloth opening device for a knitting machine, comprising a control means for driving the driving means at a predetermined time while forming a predetermined knitting seam on the sewing object based on the set data. And a selection means for converting the cloth opening operation performed by said drive means at said predetermined time into valid or invalid. The method of claim 1, And the pair of cloth fixing members are held in a spaced apart state when the cloth opening operation is invalidated. The method of claim 1, And the pair of cloth fixing members are kept in an approaching state when the cloth opening operation is invalidated. The method of claim 1, When the cloth opening operation is valid, the cloth opening operation is performed after the cloth fixing by the cloth fixing member or before the sewing operation. When the cloth opening operation is invalid, the cloth opening operation is performed before the cloth fixing by the cloth fixing member. Cloth opening device of the sewing machine, characterized in that to complete. A pair of fabric fixing members arranged in such a manner as to cooperate with the cloth presser to fix the to-be-sealed material so as to be movable in the lateral direction so as to approach or separate the shandong route between the shank routes of the cloth cutting blades; A pair of cloth opening means for enabling a cloth opening operation in which the pair of cloth fixing members are separated from an approach state with respect to the shanghai east route; Drive means for performing the cloth opening operation by electrical control; A cloth opening apparatus for a knitting machine, comprising a control means for driving the driving means at a predetermined time while forming a predetermined knitting seam on the sewing object based on the set data. And a selection means for converting the folding action of the cloth fixing member by said driving means into valid or invalid.