KR100643416B1 - Control device of buttonhole sewing machine - Google Patents

Abstract

In the sewing machine control apparatus according to the present invention, data representing the seam sewing pattern is stored in the RAM 33 in advance as control data. In addition to the pattern data, the control data stores pre-incision or post-incision data indicating whether the button hole is formed before the seam sewing or the button hole is formed later. The RAM 33 stores a plurality of different control data. By selecting one control data from these control data, the seam sewing pattern data and the pre-incision or post-incision data are simultaneously set. Therefore, setting of data can be made easy. The control data can be changed, and the data can be optimized according to the situation.

Description

CONTROL DEVICE OF BUTTONHOLE SEWING MACHINE}

1 is a partially broken side view showing a sewing machine having a sewing machine control apparatus according to the present invention;

2 is a block diagram for explaining a sewing machine control apparatus.

3 is a table showing the contents of control data used in the sewing machine control apparatus of the above example.

Fig. 4 is a diagram showing a memory area of control data stored in a ROM of the sewing machine control apparatus of the above example.

5 is a buttonhole seam sewing diagram for explaining the control data of the sewing machine control apparatus of the above example.

Fig. 6 is a front view showing the sewing machine operating panel of the above example.

7 is a flowchart for explaining processing of the sewing machine control apparatus of the above example.

Fig. 8 is a buttonhole seam sewing diagram for explaining the creation of seam sewing data in the sewing machine control apparatus of the above example.

Fig. 9 is a diagram showing a data table of seam sewing data in the sewing machine control apparatus of the above example.

10 is a flowchart for explaining data setting processing of the sewing machine control apparatus of the above example.

* Explanation of symbols for main parts of drawings *

6. Needle (part of sewing means)

7. Control panel (selection means, change means)

8. Control

10. Needle bar (part of sewing means)

11. Loop former base (part of sewing means)

11a. Loop forming part (part of sewing means)

15. Cloth (seeds)

16. Buttonhole (all buttonholes)

17. Button opening (circular part not button straight part)

18. Transfer die (part of sewing means)

19. Cloth pressing part (part of sewing means)

26. Movable scalpel (part of hole cutting means)

31.ROM (memory means)

32. CPU (control means, display control means)

33.RAM

44. Incision display part after line incision (display means)

The present invention relates to a control device for a seam-forming sewing machine that forms a hole or an incision in a to-be-sealed object by hole-forming means such as a cloth cutting scalpel, and performs seam sewing on the periphery of the hole of the sewing material.

Conventionally, a button hole consisting of a droplet-shaped opening and a straight incision successive to the cloth to be sealed is formed, and a series of flat sewing, ie, seam sewing, is automatically performed around the button hole so that a seam button hole is formed. Forming seam forming (also known as "broken") sewing is already known.

Although not shown, this buttonhole seaming machine cooperates with a needle rod supported by a sewing arm on the upper side of the sewing bed and moved up and down by a driving mechanism, and a needle disposed below the sewing bed and fixed to the needle bar. And a loop forming portion for forming a seam, a transfer die moving on the sewing bed by the XY transfer mechanism with the cloth disposed on the upper surface, and a clamp for pressing the cloth on the upper surface of the transfer die.

Further, a scalpel mechanism having a scalpel having a shape corresponding to the button hole shape and a scalpel accommodation portion disposed opposite to the scalpel is disposed up and down in a form of sandwiching the transfer die, and the scalpel or the scalpel accommodation portion is lowered or raised to form a transfer die. Form a buttonhole for the fabric.

In the sewing machine, each of the mechanisms is controlled by a microcomputer control device, and a button hole is formed in the cloth by a scalpel mechanism, so that the transfer die is moved so that the needle rod moves along the circumference of the button hole of the cloth. The rod and loop forming unit is driven to perform a predetermined sewing sewing, that is, seam formation.

Further, when seam forming sewing is performed on the button opening of the button hole (that is, the water droplet-shaped opening portion), a loop mechanism and a rotating mechanism for rotating the loop forming machine and the needle bar about the vertical rotation axis are provided to make the button hole radial. Moreover, a seam is formed in the left and right sides of a straight cut part of a buttonhole by this.

And the operation which cuts a buttonhole by a scalpel before forming a seam by this is called "line cutting".

On the other hand, in the case of cloth such as knits, there is a problem in that a good appearance cannot be formed by pre-incision, and the buttonhole is cut in the fabric after seam formation. In this case, the needle drop position is set so that there is a clearance gap between the buttonhole and the seam so that the seam thread is not cut when the buttonhole is cut. The incision of the buttonhole after forming the buttonhole seam in this manner is referred to as "resection".

Conventionally, in such a buttonhole seam forming machine, various numerical values and patterns are set for the number of buttonholes and seam sewing stitches, and at the same time, a post cut or line cut is set. In the case of line cutting, the gap between the buttonhole and the seam is set to be minimum, and in the case of post-incision, the distance between the buttonhole and the seam is set large.

In recent years, in a sewing machine, a series of sewing patterns and their respective setting values are stored in advance in a memory or the like in a plurality of types, and various setting values and pattern data accompanying by selecting one type of sewing pattern can be set. Done.

In addition, a selection switch for selecting a pre-incision and a post-incision is provided to selectively set either one of the pre-incision and the post-incision.

According to the selection of pre-incision and post-incision by the selection switch, the distance value is automatically set so that the distance between the edge and the seam around the button hole of the fabric is short for the first cut. A sewing machine is known which automatically sets the distance value so that the distance between the edge of the buttonhole and the seam is long.

By the way, in the conventional sewing machine which sets various values such as the length of the buttonhole and the number of seam stitchings, and sets the number of cuts and cuts, the operation of selecting one from a plurality of sewing patterns stored in advance is performed. At the same time, it is necessary to operate the selector switch to select one of the first or second incisions.

Also, in the conventional sewing machine in which the distance between the buttonhole of the fabric and the seam is set by the selection of the pre-incision or the post-incision as described above, the distance between the buttonhole of the fabric and the seam is simply selected by simply selecting a sewing pattern. Since it is not determined, it is necessary to input two kinds of selection of sewing patterns, selection of post-incision and pre-incision to determine the moving path of the cloth by the transfer die, which makes the setting complicated.

In the latter sewing machine, two types of distances, which are determined by the selection of the line cutting or the cutting line, can be individually set and changed in the distance between the straight portion of the button hole and the seam. In the distance between the buttonhole and the seam, there are only two types uniquely determined by the selection of the selection means, and the setting cannot be changed individually. Therefore, the distance between the button opening of the fabric and the seam cannot be set to an appropriate distance depending on the material difference such as the fabric (sewn material) or the yarn. That is, the distance between the edge of the button opening of the cloth and the seam cannot be properly adjusted in response to the change of the material such as cloth or thread, so that there is a problem in that an optimum sewing shape cannot be formed.

SUMMARY OF THE INVENTION The present invention is based on the above problem, and provides a sewing machine control device that can easily select a sewing pattern including selection of a pre-incision and a post-incision, and can simplify a control process based on a sewing pattern. It aims to do it.

The control device for a sewing machine according to claim 1 according to the present invention is a sewing means for sewing a seam of a buttonhole or the like (for example, a buttonhole-16-) with respect to a sewing object (for example, cloth -15-). For example, needle-6-, needle rod-10-, loop forming portion 11a-, loop forming base 11-11-, and hole forming means (e.g. movable scalpel 26-) for forming a hole in the object to be sealed. A pattern data for forming a post seam data and a predetermined seam sewing pattern instructing that the hole formation to the object to be sewn by the hole forming means is performed before or after the seam sewing by the sewing means; And storage means (e.g., RAM-33-) for storing a plurality of types of control data including distance data indicating a distance between the hole formed by the hole forming means and the seam, and a plurality of types of control stored in the storage means. From data The selection means (for example, the operation panel-7-) for selecting the control data of the control unit, and which of the seam sewing and the hole formation are first determined based on the control data selected by the selection means. Control means (e.g., CPU-32-) for seam sewing to the object to be sewn by the sewing means and hole formation to the object to be sewn by the hole forming means while maintaining the distance.

According to the above configuration, by selecting one control data from a plurality of types of control data, the preliminary or post-incision is determined based on the posterior data indicating whether the posterior incision is included in the control data and the pattern data representing the sewing pattern. By determining the sewing pattern, the operation of the sewing machine can be facilitated.

In addition, the pattern data representing the seam sewing pattern included in the control data determines the pre-incision or post-incision based on the posterior data included in the same control data. You can decide which one. Therefore, the seam sewing data is determined only by selecting the control data, thereby facilitating the control process.

In addition, it is assumed that data (including post-production data) other than the distance between the button hole circumferential edge of the object to be sealed and the seam sewing portion store the same control data (for example, the same shape of the button hole by post-incision), In these control data, if the distance between the hole circumferential edge of the object to be sealed and the seam sewing portion is different, the material to be sealed is made corresponding to the difference in material properties (such as thickness, thickness, size, flexibility, and the like) of the object and the material to be sealed. The distance between the edge of the hole and the seam seam can be determined appropriately.

In addition, the control apparatus of the sewing machine according to claim 2 of the present invention comprises changing means (for example, operation panel-7-) for changing the contents of the control data selected by the selection means on the premise of claim 1. And the distance data is changeable by the changing means, and wherein the control means controls the sewing means and the hole forming means based on the changed control data when the control data is changed by the changing means. It features.

According to the above configuration, the contents of the control data can be changed by the changing means, and in particular, the distance data indicating the distance between the edge of the hole formed by the hole forming means and the seam sewing portion can be changed. Even if the distance data is set differently to correspond to the material such as thread or thread, the distance data is changed by the changing means, so that the difference in material characteristics (characteristics such as size, thickness, flexibility, etc.) of the object to be sewn or thread can be changed. Correspondingly, the distance between the edge of the hole of the object to be sealed and the seam sewing portion can be properly adjusted.

The sewing machine control apparatus according to claim 3 of the present invention is based on the premise of claim 1 or claim 2, and is provided with display means (for example, after pre-cutting) on the basis of the preceding data of the control data selected by the selecting means. And a display control means (e.g., CPU-32-) for indicating whether the hole is formed before the seam sewing or after the seam in the incision display section 44-.

According to the above configuration, as in the configuration of claim 1 or 2, the post-incision or pre-incision is determined by selecting the control data, and when there is no selection switch for selecting the post-incision, the operator is currently looking at the appearance of the sewing machine. Although it is not possible to judge whether the setting of the cutoff or the cutoff is set, the operator sets the cutoff or the cutoff on the display means of the sewing machine based on the selected control data. Just by looking at the display means, it is possible to determine whether the current setting is individual or segmented.

In other words, if there is a selection switch for selecting the post-cutting, it is possible to determine whether the current setting is the single cutting or the cutting-off by looking at the selection switch. However, in the sewing machine of the present invention, after selecting the cutting data, only the selection of the control data is performed. It is not necessary to install the selection switch because the cutoff value is determined, and it is not possible to determine whether the current job is pre-cutting or cutting-off by the selection switch, but display means for displaying the current setting state is provided. By doing this, such a current setting can be easily recognized.

In addition, by displaying the current setting on the display means to indicate whether it is cutting off or cutting off, it is possible to prevent the setting of the cutting line or the cutting off during the selection of the control data. You can prevent misunderstandings about whether you are working with the setting of working or cutting off.

Next, a sewing machine control apparatus according to an embodiment of the present invention will be described with reference to the drawings.

As shown in Fig. 1 and Fig. 2, the sewing machine 1 equipped with a control device according to an embodiment of the present invention has a basic configuration as a sewing machine for making a seam in a buttonhole.

And the sewing machine 1 is a sewing machine provided with a rectangular bed part 2, the pillar part 3 provided in the back part of this bed part 2, and the arm part 4 extended forward from this pillar part. The main body 5 and the sewing machine table in which this sewing body 5 is arrange | positioned are provided. The sewing machine 1 is provided with an operation panel 7 and a control device 8 to be described later, but these may be provided on the sewing machine body 5 side or on the sewing table side.

The sewing table is provided with, for example, a pedal start switch 9 (shown in Fig. 2). A needle bar 10 having a needle 6 at a lower end thereof is installed at the distal end of the arm part 4 so as to extend downward. In addition, the bed portion 2 has a loop forming portion 11a having a loop forming portion (not shown) facing the needle bar 10 and a spreader for supporting the loop forming portion. The base 11 is installed. In the sewing machine body 5, each driving mechanism for moving the needle bar 10 up and down and left and right, and simultaneously driving the loop former and the spreader is provided as follows.

That is, in the bed part 2, the main shaft servomotor 12 is connected to the lower shaft (not shown) for driving a loop former and a spreader, and the lower shaft is rotationally driven. The loop former and the spreader are connected to the lower shaft via a loop former driving mechanism and a spreader driving mechanism (not shown). In addition, the lower shaft is connected to the upper shaft via the transmission mechanism provided with a timing belt in the arm portion 4, and the upper shaft is driven by driving from the lower shaft.

The upper shaft is connected to the needle rod 10 via a needle rod up and down drive mechanism and a needle rod vibration mechanism (not shown) to drive the needle rod 10 up and down and to oscillate from side to side.

In addition, the needle bar 10 and the loop former base 11 are connected to a rotating mechanism having a Z-axis pulse motor 14 (shown in FIG. 2) and a transmission means provided with a timing belt. The loop former base 11 is synchronously rotated about a vertical axis of rotation. As shown in Fig. 5, the button opening 17 of the button hole 16 of the fabric 15 (to be described later) (semi-circular portion of the droplet hole 16a among the button holes 16, that is, the straight cutout 16b of the droplet hole 16a). It is a mechanism for making a seam radially when forming a seam, i.e. forming a seam. In addition, as described above, the needle bar 10 and the loop former base 11 that are rotated by the rotating mechanism are detected by the Z-axis origin sensor 24 (shown in FIG. 2) as to the home position.

Then, a transfer die 18 (shown in cross section in FIG. 1) in which the cloth 15 is disposed is provided on the upper surface portion of the bed portion 2, and a cloth 15 is placed on the upper surface portion of the transfer die 18. A pair of cloth pressing portions 19 (shown in an elevated state) for pressurizing are provided. The transfer die 18 is a thin rectangular box-shaped with an open lower surface as a whole, and is provided between the pair of cloth pressing portions 19 and is provided with an elongated opening in the front-rear direction. The transfer die 18 is provided by a transfer mechanism made of an X-axis pulse motor 20 (shown in FIG. 2), a Y-axis pulse motor 21 (shown in FIG. 2), or the like, provided in the bed portion 2. FIG. It is horizontally moved in the X direction (left and right directions) and Y direction (front and rear directions).

As described above, the transfer die 18 moved by the transfer mechanism is moved to the home position by the X-axis origin sensor 22 (shown in FIG. 2) and the Y-axis origin sensor 23 (shown in FIG. 2). Detect if there is any.

In the sewing machine 1, a scalpel mechanism, which is a hole forming means for cutting the button hole 16 into the cloth 15, is provided. The scalpel mechanism includes a scalpel receiving die (not shown) provided on the bed part 2 side, a movable scalpel 26 installed so as to be movable upward and downward on the scalpel receiving die (not shown), and the movable scalpel 26 is placed up and down. A scalpel drive mechanism including a cloth cutting cylinder 27 (shown in FIG. 2, an air cylinder) to be moved is provided. In addition, in the scalpel mechanism of this example, the movable scalpel 26 does not move along a circular arc but moves in a straight line.

In addition, a cylinder driving solenoid valve 28 for operating the cloth cutting cylinder 27 is connected to the cloth cutting cylinder 27. Then, the scalpel mechanism is lowered by directing the movable scalpel 26 toward the scalpel receiving die while the cloth 15 is disposed between the scalpel receiving die and the movable scalpel 26.

In addition, although description and illustration are abbreviate | omitted in the sewing machine 1, the actuator which drives the cloth press part 19, the actuator which drives this thread cutter, the sensor which detects the operation | movement, such as these actuators, etc. It is provided. In the sewing machine 1, the movement of the transfer die is in the X direction and the Y direction, but the movement of the transfer die may be in the arc direction (θ direction) determined by the radial direction (r direction) and the angle.

Moreover, in the structure of the sewing machine 1 mentioned above, the needle bar 10 provided with the needle 6, the mechanism which drives this, the loop forming machine and the spreader, the mechanism which supports and drives this, and the transfer die ( 18), the mechanism for driving the same, the cloth pressing portion 19, and the mechanisms attached to these other devices serve as sewing means for cutting down, i.e., forming seams. In addition, the scalpel mechanism is a hole forming means for cutting the button hole 16.

Next, the configuration and function of the sewing machine control apparatus will be described with reference to the flowchart of FIG.

First, the control device 8 has, as its basic configuration, a ROM 31 in which a program for controlling the sewing machine and data used for the program are stored in advance, data read out from the ROM 31, and an operation panel 7. RAM 33, which stores data calculated by the CPU 32 described later based on input or set data, a program, and the like, and the CPU 32 that performs various processes based on the program.

The ROM 31 stores a program for performing processing to the CPU 32 from the setting of the sewing pattern described later to the hole cutting and seam formation. In the RAM 33, control data consisting of six data shown in Table 1 of FIG. 3 is stored in the nine types of patterns No. 1 to No. 9 as shown in Table 2 of FIG.

Referring to Fig. 5 showing the basic pattern of buttonhole seam formation, the control data is the length of the buttonhole 16 corresponding to the portion indicated by the arrow a, and the buttonhole straight line corresponding to the portion indicated by the arrow b. The number of negative needles, the number of needle stitches corresponding to the portion indicated by the arrow c, the posterior data indicating whether the cut individual or the cut off the individual, and the edges of the button hole 16 of the cloth 15 in the straight portion indicated by the arrow b. The distance from the edge of the button hole 16 of the cloth 15 to the sewing position in the button opening 17 corresponding to the portion indicated by the arrow c and the straight portion cutting space d indicating the distance to the seam position. It becomes the button opening part incision space "e". In other words, one group of the data of these six items becomes one control data.

Moreover, the said straight part is a part except the water droplet-shaped semicircle part among the edges of a button hole, and is formed by the several straight line which periphered this part. In practice, the vicinity of the opening 17 is an arc. In addition, the data except seam data of control data is a parameter of a seam pattern. The data item No. is given to each data, where 1 is the buttonhole length, 2 is the number of stitches on the straight line, 3 is the number of stitches on the button opening, 4 is the back and forth data (pre-incision or post-incision data), and 5 is straight. The sub incision space, 6, becomes the opening incision space. At least some other data of these data are stored in the RAM 33, and numbers of patterns No. 1 to No. 9 are assigned to each control data.

When the selected control data is changed as described later among the control data stored in the RAM 33 as described later, the changed control data is stored again. The RAM 33 stores seam data including data such as needle drop point coordinates calculated to be described later from the control data. The program stored in the ROM 31 can also be read out and executed by the RAM 33.

The CPU 32 reads out one control data from the control data stored in the RAM 33 on the basis of the input from the operation panel 7 at the time of seam formation of the button hole 16 and from the operation panel 7. When there is a data input for changing the control data, a process of rewriting the control data stored in the RAM 33 is performed.

Next, a seam sewing data creation process is performed from the control data stored in the RAM 33.

When a signal for instructing sewing start is input from the start switch 9 connected to the CPU 32 via the interface 35, driving of the needle bar 10, the loop forming machine, the spreader, and the like up, down, left, right, and rotation are performed. Various drive mechanisms for controlling seams are controlled to perform seam sewing.

In the above processing, the CPU 32, although not described in detail, confirms the operation of the various members by the various sensors provided in the sewing machine, drives the pressurizing portion accompanying the seam sewing, drives the thread cutter, and the like. The process of controlling the drive of other members is performed.

And the CPU 32 of the control apparatus 8 which performs the process as mentioned above is connected to the operation panel 7 via the interface 35 shown in FIG. 2, and is based on the data input from the operation panel 7 Select and change the control data. In addition, the CPU 32 is connected to the servomotor drive circuit 36 for driving the main shaft servomotor 12 through the interface 35, and controls the rotation of the main shaft servomotor 12 to control the upper and lower shafts. The operation of the needle bar 10, the loop former and the spreader is controlled through a driving mechanism of the needle rod, the loop former and the spreader.

In addition, the CPU 32 drives the pulse motor drive circuit 37 for driving the X-axis pulse motor 20 and the Y-axis pulse motor 21 provided in the transfer mechanism of the transfer die 18 via the interface 35, respectively. It is connected to 38, and controls the operation of the transfer die 18 in the X-axis direction and the Y-axis direction. The CPU 32 also drives the Z-axis pulse motor 14 which rotates the needle bar 10 and the loop former 11 to make the seam radial at the button opening 17 via the interface 35. It is connected to the pulse motor drive circuit 39 to control the rotation of the needle bar 10 and the loop former base 11. In addition, the CPU 32 is connected to the X-axis origin sensor 22 and the Y-axis origin sensor 23 for detecting the home position of the transfer die 18 through the interface 35, and the transfer die 18 is A signal indicating whether to return to the home position is input and control is performed based on this signal.

In addition, the CPU 32 is connected to the Z-axis origin sensor 24 which detects whether or not the rotation angles of the needle bar 10 and the loop former base 11 are at the home position through the interface 35. A signal indicating whether or not the rotation angles of the needle bar 10 and the loop former base 11 return to their original state is input and control is performed based on this signal. In addition, the CPU 32 is connected to the cylinder driving solenoid valve 28 for driving the cloth cutting cylinder 27 for driving the movable scalpel of the scalpel mechanism via the interface 35, and the button hole 16 by the scalpel mechanism. Control the formation of a.

Next, with reference to the drawing showing the operation panel 7 of FIG. 6 in the operation panel 7 for an operator to select and change control data, it demonstrates.

The operation panel 7 includes a control data selecting section 41 for selecting one control data from a plurality of control data, a control data changing section 42 for changing data of each item of the selected control data, and a control. When data is set When the above-mentioned sewing data is calculated based on the set control data, that is, when the preparation switch 43 for operating when the sewing preparation operation is performed by the CPU 32 and one control data are selected A posterior incision display section 44 which displays whether the posterior data of the control data is a segmented segment or a segmented segment.

Then, the control data selection section 41 assigns 1 to the control data display section 41a, which indicates the currently selected control data as the pattern No. described above, and the control data No. displayed on the control data display section 41a each time it is pressed. The pattern plus switch 41b for changing the selected control data by adding and the pattern minus switch 41c for changing the selected control data by subtracting 1 from the control data No. displayed on the control data display every time it is pressed. Equipped.

In addition, the control data changing section 42 includes a data item display section 42a for displaying in the data item No. which data items of the plurality of data items in the control data are changed, and a data item display section 42a each time it is pressed. By subtracting 1 from the data item plus switch 42b for changing the selected data item by adding 1 to the data item No. displayed in the " 1 " and the data item No. displayed on the data item display 42a each time it is pressed. And a data item minus switch 42c for changing the selected data item.

The control data changing section 42 is a data display section for displaying data of a data item corresponding to the data item No. displayed on the data item display section 42a of the control data of the pattern No. displayed on the control data display section 41a ( 42d), a data plus switch 42e for changing the value of the data by adding 1 to the lowest row of data displayed on the data display section 42d each time it is pressed, and on the data display section 42d each time it is pressed. And a data minus switch 42f for changing the value of the data by subtracting 1 from the lowest row of the data, and a data setting switch 42g for instructing the change and update of the selected control data.

Next, the process in the CPU 32 from setting of control data to cutting of buttonholes and seam formation will be described with reference to the flowchart in FIG. 7.

First, it is judged whether or not a signal indicating that the pattern plus switch 41b and the pattern minus switch 41c of the operation panel 7 are pressed is input (step A1), and if the signal is input, the pattern plus switch The pattern No. is updated in response to the operation of the 41b and the pattern negative switch 41c, and the updated pattern No. is displayed on the control data display section 41a (step A2). In addition, before the pattern No. is updated and when the pattern No. is updated, the control data display section 41a displays the pattern No. selected in the previous seam sewing. Or the default pattern No. is displayed. The changed pattern No. Alternatively, the unchanged pattern No. is stored in the RAM 33.

Next, it is determined whether or not the data setting switch 42g is pressed when the pattern plus switch 41b and the pattern minus switch 41c are pressed or when the pattern No. is changed as described above (step A3), When the data setting switch 42g is pressed, data setting processing (data change processing) described later is performed (step A4). That is, a process of changing data of one or a plurality of data items among a plurality of data items included in one control data selected from the plurality of control data stored in the RAM 33 is performed.

Next, it is judged whether or not the ready switch 43 is pressed when the data setting switch 42g is not pressed or when the data setting process is finished (step A5). When the ready switch 43 is pressed, Proceeds to the next processing and returns to step A1 when not pressurized.

That is, until the ready switch 43 is pressed, the pattern plus switch 41b and the pattern minus switch 41c are pressed to always change the pattern number, and at the same time, the data setting switch is pressed to press one of the patterns indicated by the pattern number. It is possible to change data of any data item in the control data. By pressing the preparation switch 43, the process of selecting one control data from the plurality of control data stored in advance and the process of changing the data in the selected control data are terminated.

When the ready switch 43 is pressed as described above, the control data is confirmed, and the determined control data is stored in the RAM 33.

Then, seam sewing data is created based on the determined control data (step A6). At this time, the seam sewing shape (indicated by the broken line) is calculated with respect to the pre-registered incision shape (solid line display) of the button hole 16 shown in FIG. 8 by the data set values of the straight incision space and the button opening incision space. . 8, the point O is the origin position of the XY coordinates, the point A is the starting point of the seam sewing path of the portion of the straight cut 16b of the buttonhole 16, and the point B is the straight cut 16b. End point of the seam sewing, that is, the seam sewing around the perimeter of the button hole 16, the boundary between the straight cutout 16b and the water droplet hole 16a, and point C is the water droplet hole 16a. It is the boundary between the arcuate part and the straight part of the outer seam. In addition, points D and E indicate the starting point and the end point of the seam sewing corresponding to the button opening 17 described above. The point C is obtained by obtaining a tangent line passing through the B point of the circle including the outer semicircular seam sewing of the button opening 17, and obtaining the intersection point between the tangent line and the circle. In addition, the F point corresponding to the C point between the E point and the H point (seams sewing end point) is also obtained in the same manner. Therefore, points A, B, G, and H are offset by the incision of the straight line corresponding to the incision, and C, D, E, and F are offset by the button opening in the corresponding incision. It becomes a point. In addition, the incision space between point B and C is determined by the seam line connecting B and C points, and similarly, the incision space between point F and G points is a straight seam line connecting F and G points. Is determined.

Then, the movement amount in the Y direction from the A point to the D point is obtained for the seam path indicated by the broken line. Here, from the point A to the point D, the Y-axis (position in the Y-axis direction from the origin) of each needle falling point is divided equally by the number of straight-line stitching for the amount of movement in the Y-axis direction, and A is obtained from the Y-coordinate. The X coordinate (the position in the X-axis direction from the origin O) on the straight seam indicated by the broken line from the point B to the point B and the point C to the point C is calculated. Moreover, the X coordinate on the arc-shaped seam shown by the broken line from C point to D point is computed with respect to the Y coordinate calculated | required as mentioned above.

Further, at the point E from the point D on the semicircular seam corresponding to the button opening 17, the semicircular seam is equally divided by the number of stitches of the button opening to calculate the XY coordinates.

Further, from the point E to the point F, the XY coordinates are obtained in the same manner as in the case of the point A to the point D (in the reverse direction). In addition, the rotation angle (Z rotation amount) at each position of the needle bar 10 and the loop forming base 11 is 0 degrees from A to D, 180 degrees from E to H. At the point D from the point D corresponding to the opening 17, the angle obtained by dividing 180 degrees evenly by the number of stitches of the button opening is defined as the rotation angle. Each needle drop is calculated by calculating the difference between the XY coordinates of each needle drop point and the Z rotation angle based on the XY coordinates of the needle drop points obtained in this way, and the rotation angles of the needle rod 10 and the loop former base 11. The XY movement amount and the Z rotation amount between the points are obtained, which are listed in the data table T as the X movement amount, the Y movement amount, and the Z rotation amount as shown in FIG. 9 and stored in the RAM 33.

Next, the transfer die 18 moves to the home position, and the needle bar 10 and the loop former base 11 are rotated to the home position (home angle) (step A7). Then, it is judged whether or not the start switch 9 is turned on (step A8). In other words, the standby state is maintained until the start switch 9 is pressed. Then, when the start switch 9 is pressed, it is determined whether or not the preceding and following data of the set control data is to be pre-cut (step A9). If the post-post data is to be pre-cut, the scalpel mechanism is driven to form the buttonhole 16 before seam sewing (step A10).

Then, in the case where the post-post data is post-cutting or when the formation of the button hole 16 is completed, the transfer die 18 is moved to the seam sewing start position (step A11). Then, the needle bar 10, the loop forming machine, the spreader, the transfer die 18, and the like are driven to perform the seam sewing operation (step A12). Next, after the seam sewing is finished, the transfer die 18 is returned to the home position, and the rotation angles of the needle bar 10 and the loop former base 11 are returned to the home position (step A13).

Next, it is determined whether or not the preceding and following data of the set control data are to be post cut off (step A14). When the post-post data is post-incision, the scalpel mechanism is driven to form the buttonhole 16 after seam sewing (step A15). When the post-post data is lost, or when the formation of the button hole 16 is finished, the process returns to step A8, and the standby state is pressed until the start switch 9 is pressed, and the start switch 9 is pressed. If so, the above-described operation is repeated to perform seam sewing for the next buttonhole.

Next, the above-described data setting processing will be described with reference to the flowchart of FIG. In step A3 of the flowchart of Fig. 7, in the step where the data setting switch 42g is pressed, control data corresponding to the pattern No. displayed on the control data display section 41a at this time is stored from the ROM 31 to the RAM 33. Will be read. In the data setting process, the data item No. becomes 1 as a default value (step B1), and the data item No. is displayed on the data item display section 42a. The data of data item No. 1 is read out and displayed on the data display section 42d.

In this state, it is determined whether the data plus switch 42e or the data minus switch 42f has been operated (step B2), and if operated, the data stored in the RAM 33 based on the operation of the switch. It is rewritten (step B3). At this time, the display of the data display section 42d is also changed. In the data rewriting, each lower one row of data is added or subtracted by one each time the data plus switch 42e or the data minus switch 42f is pressed as described above. In addition, when changing a pre-incision and a post-incision, 1 and 2 are exchanged by adding or subtracting 1 as a pre-incision as 1 and a post-incision as 2, for example.

Next, whether or not the data plus switch 42e or the data minus switch 42f is not operated, or whether the data item plus switch 42b or the data item minus switch 42c is operated when data is rewritten. It judges (step B4), and if it operated, the data item is updated (step B5).

Then, it is determined whether the data item plus switch 42b or the data item minus switch 42c has not been operated, or whether the data setting switch 42g is pressed after the data item number is changed (step B6), When data setting switch 42g is pressed, data update is complete | finished and it is set as the state which confirmed the data (step B7), and it progresses to the process of step A5 of the process mentioned above.

When the data setting switch 42g is not pressed, the flow returns to step B2. When the data item No. is updated, the data of the updated data item No. can be changed, and the data item No. is updated. If not, the data of the data item No. can be changed as before.

In other words, in the data setting process, the data item No. can be arbitrarily changed until the data setting switch 42g is pressed again to change the data of the arbitrary data item No.

In the sewing machine control apparatus as described above, it is decided to form the seam sewing pattern and the button hole 16 before or after seam formation only by selecting one control data from a plurality of previously stored control data. Therefore, the operation of the sewing machine can be facilitated, and the setting processing of the control data in the control device can be facilitated.

In addition, according to the sewing machine control apparatus of the present embodiment, as described above, the data included in the control data can be completely changed, including the cutout space of the straight portion and the cutout portion of the button opening, which can be individually set. More precise control data can be set according to the type (material, thickness, thickness, etc.), and buttonhole seam sewing can be performed in a more desirable sewing shape by optimizing the setting of the incision space and the like.

Further, in the present embodiment, since the post-incision or the pre-incision can be determined by selecting one control data from the plurality of control data, there is no replacement switch for replacing the pre-incision and the post-incision. That is, it is not possible for the operator to see the replacement switch and determine whether the data setting is performed by pre-incision or post-incision, and whether the sewing machine operates in the present pre-incision state or in the post-incision state. However, in this example, since there is a pre-incision display section 44, it can be judged whether the present setting is a single line or a second line.

Therefore, even if line cutting or post cutting is determined by selecting one type of control data from a plurality of types of data, if the line cutting and post cutting are set incorrectly at the time of data setting, the line cutting and post cutting are judged during the sewing operation. It can prevent the work miss.

In Fig. 6, the pre-incision display section 44 is fixedly indicated by "line incision" and the light emitters 44a (44b) such as LEDs under the part which is fixedly indicated by "resection". ) Is placed. If the setting is line cut, the light emitting body under "line cutting" is made to emit light, and if the setting is post cutting, the light emitting body under "back cutting" is made to emit light. However, the display of the post-incision section 44 is not limited to this, and for example, the post-incision section display section 44 is displayed on the LCD display as "post-incision" or "line-incision" directly in character. It is desirable to.

Incidentally, in the preparation of the seam sewing data in the above example, the transfer die 18 is moved by moving in the X-axis direction and the Y-axis direction, but the movement of the transfer die 18 is performed by linear movement in the radial direction (r direction). By combining the movements in the circular arc direction by the angle θ, the seam sewing data which is about the same can be created.

When changing any data item of the control data, each time the data plus switch 42e and the data minus switch 42f are pressed, the lower one row of the numerical value to be data is added or subtracted by one, but is to be set in advance, for example. In the case where a plurality of possible data are determined and the data plus switch 42e is pressurized by giving a sequence number to each data, the data is changed by 1 in accordance with the above-described sequence, and when the data minus switch 42f is pressed. The data may be changed by 1 in the reverse order of the above-described order.

For example, the data in the incision space can be:

                        -2 -1 0 1 2

Case of incision

Straight incision space -0.2 -0.1 0.0 0.1 0.2

Button Opening Incision Space -0.4 -0.3 -0.2 -0.1 0.0

After incision

Straight incision space 0.0 0.1 0.2 0.3 0.4

Incision space for button opening 0.0 0.1 0.2 0.3 0.4

The central data is standard data, that is, control data stored in advance, and the left and right sides are candidates for changeable data, respectively. Therefore, before changing data, the third standard data from the left is set. Then, by operating the data plus switch 42e and the data minus switch 42f, one data can be selected from five data. In addition, although there is a negative value as the data of the incision space, this is offset in a direction closer to the buttonhole 16 with respect to the predetermined seam sewing reference position, and plus data is offset in a direction away from the buttonhole 16. .

In addition, in this embodiment, although the buttonhole seam sewing which forms the seam of the buttonhole which consists of a round part and a straight part was demonstrated, it is applicable also to forming the seam of the buttonhole which consists only of a straight part.

According to the sewing machine control device according to claim 1 of the present invention, by selecting one control data from a plurality of types of control data, the front and rear data representing the pre-incision or the post-incision included in the control data and the pattern data representing the sewing pattern are selected. At the same time, the seam sewing pattern is determined at the same time as the pre-incision or the post-incision is determined, which facilitates the sewing operation.

In addition, the pre-incision or the post-incision is determined by the posterior data included in the control data, such as the pattern data representing the pattern of the seam sewing included in the control data. Either for post-incision can be determined. Therefore, the seam sewing pattern is determined as much as the control data is selected, thereby facilitating the control process.

According to the sewing machine control apparatus according to claim 2 of the present invention, the distance data is changed by means of changing means even if the distance data does not have a different setting corresponding to the material such as the object to be sewn or the thread in the control data. The distance between the periphery of the hole of the object to be sewn and the sewing seam can be appropriately adjusted in response to differences in characteristics such as the thickness and thickness of the material such as thread and the degree of flexibility.

According to the sewing machine control apparatus according to claim 3 of the present invention, the operator can determine whether the current setting is a single line or a second line by simply looking at the display means of the sewing machine.

In this way, by displaying the current setting on the display means of cutting off or cutting off, it is possible to prevent a selection error in which the setting of the post-cutting and the pre-cutting is wrong when the control data is selected. You can prevent misunderstandings about whether you are working or whether you are working with the setting of the cutting line.

Claims (3)

Sewing means for sewing a buttonhole seam to the object to be sewn; In the sewing machine control device having a hole forming means for forming a hole in the object to be sealed, Pattern data for forming a predetermined seam sewing pattern and post data indicating that the hole formation to the to-be-sealed object by the hole forming means is performed before or after the seam sewing by the sewing means, and the hole forming means. Storage means for storing a plurality of types of control data including distance data indicating a distance between the formed hole and the seam; Selection means for selecting one control data from a plurality of types of control data stored in the storage means; On the basis of the control data selected by the selection means, it is determined which seam sewing or hole forming is to be performed first, and based on the determination, seam sewing to the sewing material by the sewing means and the sewing material by the hole forming means. And a control means for performing hole formation in the furnace while maintaining the distance. The method of claim 1, Changing means for changing the contents of the control data selected by said selecting means, The distance data becomes changeable by the changing means, And the control means controls the sewing means and the hole forming means based on the changed control data when the control data is changed by the changing means. The method of claim 1, A buttonhole seam, characterized in that the display means provided for displaying the hole is formed before or after the seam sewing on the display means provided in the sewing machine on the basis of the preceding and following data of the selected control data. Control of sewing sewing machine.

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