JPH0679631B2 - Sewing machine controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a sewing machine control device for program-controlling a sewing operation.

(Prior Art) Conventionally, in this type of sewing machine, data such as the number of stitches is stored,
It is designed to program sewing patterns such as pocketing and naming. Then, by reproducing the program, it is possible to sew easily and with a uniform finish.

On the other hand, for example, as shown in FIGS. 6 and 7, in the actual sewing, such as a series of sewing steps performed in the order from the collar sewing to the collar stand attachment (hereinafter referred to as “programming sewing”). In some cases, it may not be possible to deal with it alone. In this case, in the conventional sewing machine, the mode switching between the programming sewing and the optional normal sewing must be performed by operating the switch. Therefore, it is necessary to interrupt the sewing work for the switch operation, which hinders the smooth sewing work.

(Problems to be Solved by the Invention) The present invention has been made in view of the above-described circumstances, in which each sewing pattern in the programming sewing mode and the normal sewing mode is stored separately, and each sewing pattern is reproduced at the time of reproduction. An object of the present invention is to provide a sewing machine control device that can freely combine patterns and execute a series of sewing processes without operating a mode switching switch.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention includes a needle that is vertically moved through a work cloth on a work cloth support surface and is sewn on the work cloth. A stitch forming device for forming a stitch, a work cloth feeding device for feeding a work cloth on the work cloth supporting surface, and a stitch number or a work cloth end portion corresponding to the length when sewing a predetermined length. The first setting means for setting the programming sewing mode as a pattern based on the variables set in connection with the sewing such as the stitch width, and the arbitrary normal sewing mode that continues until the release signal is input as a pattern. Second setting means for setting, and third setting means for setting free combination data of each pattern of the programming sewing mode and the normal sewing mode,
The control means for controlling the operations of the stitch forming device and the work cloth feeding device is adopted so that the work cloth is sewn based on the combination data set in the third setting means. ing.

(Function) Therefore, the data of the programming sewing mode related to the sewing such as the number of stitches and the stitch width is set as the pattern in the first setting means, and the data of the arbitrary normal sewing mode is set as the pattern in the second setting means. It

Further, the sewing patterns of both modes set as described above are freely combined and set in the third setting means to start the sewing machine. Then, the stitch forming device and the work cloth feeding device are controlled by the control means in accordance with the order of the respective sewing patterns set in the third setting means. At this time, the sewing of each pattern is performed on the work cloth, and the sewing pattern in the normal sewing mode is ended when the cancellation signal is input to the control device.

(Embodiment) An embodiment of a sewing machine embodying the present invention will be described in detail below with reference to FIGS. 1 to 7.

As shown in FIG. 1, a sewing machine main shaft (not shown) is rotatably supported in the arm portion 2 of the sewing machine frame 1,
The driven pulley 3 is attached to the right end thereof. Further, a needle bar 4 is supported on the arm portion 2 so as to be vertically movable, and a needle 5 is attached to the lower end thereof. Then, when the rotation of the motor 7 arranged below the bed portion 6 of the sewing machine frame 1 is transmitted to the sewing machine main shaft through the belt 8 and the driven pulley 3, the needle 5 is placed on the work cloth supporting surface 9 of the bed portion 6. The work cloth (not shown) is moved up and down, and a stitch is formed on the work cloth in cooperation with the thread catcher 10 provided in the bed portion 6. Thus, the needle bar 4, the needle 5 and the thread catcher 10 constitute a stitch forming device.

Further, in the arm portion 2 facing the driven pulley 3 on the main shaft of the sewing machine, a synchronizing signal (timing pulse) is output in accordance with the rotation of the pulley 3, and the needle up position and the needle down position are detected. The needle position detector 11 is attached.

At the rear of the needle bar 4, a presser bar 12 is supported on the arm portion 2 so as to be movable up and down, and at the lower end of the presser bar 12, a presser foot for pressing the work cloth on the work cloth support surface 9 downward. 13 are attached. Further, a part of the work cloth supporting surface 9 is provided with a feed dog 14 which is arranged so as to face the presser foot 13 and is fed in synchronization with the vertical movement of the needle bar 4. And
The presser foot 13 and the feed dog 14 constitute a work cloth feed device for intermittently moving the work cloth on the work cloth support surface 9. The feed pitch of the feed dog 14 is detected by a feed pitch detection sensor 15 (shown in FIG. 3) mounted in the sewing machine frame 1.

Further, on the arm portion 2 and the bed portion 6 near the needle 4, a light projecting device 16 for light emission and a light receiving device 17 for sensing a light amount from the light projecting device 16 and outputting a signal are arranged oppositely.
Then, when the end of the work cloth passes between the both 16 and 17 during the sewing operation by the projector 16 and the light receiver 17, a cloth edge detection sensor that senses a change in light amount at that time and outputs a cloth edge detection signal Is configured. Also, the above 16, 16
The section 7 constitutes a cloth thickness sensor that senses the cloth thickness by sensing the amount of light transmitted through the work cloth.

A pedal 19 is provided below the bed 6 for instructing the start / stop of the motor 7 and the operation of a thread trimming device (not shown) provided near the needle bar 4.

As shown in FIG. 1, an operation panel is provided on the front surface of the arm portion 2.
Twenty are arranged. As shown in FIG. 2, on the operation panel 20, a memory key 21, a cloth thickness sensing key 22, a memory key 23, a reproduction key 24, and a plurality of (four in this embodiment) pattern designating keys 25a to 25a. 25d, number of stitches key 26, stitch width key
27, a thread cutting number key 28, a clear key 29, addition keys 30 and 31, a subtraction key 32 and the like are provided. Further, a light emitting diode D for monitoring which is blinked at the time of the operation is arranged on each of the keys 21 to 29 except the addition and subtraction keys 30 to 32. Further, on the operation panel 20, a display section for displaying the number of stitches, stitch width, the number of times of thread trimming, etc.
33 are provided.

Next, the electrical configuration of the sewing machine of this embodiment will be described.

As shown in FIG. 3, the optical receiver 1 is provided in the input interface 35 of the central processing unit (CPU) 34 which constitutes the control means.
7, various keys 21 to 32 in the operation panel 20, the feed pitch detection sensor 15, the needle position detector 11 and the pedal
19 connected. Further, the output interface 36 is connected to the motor 7, the display section 33, a thread cutting solenoid 37 for operating the thread cutting device, and the projector 16. Further, the CPU 34 has a read-only memory (R
OM) 38 and a random access memory (RAM) 39 are connected to each other, and the RAM 39 includes a working area 39a and pattern areas 39d to 39e corresponding to the pattern designating keys 25a to 25d, respectively, and the ROM 38 includes the entire sewing machine. A program for controlling the operation of is stored.

The memory key 21, the cloth thickness detection key 22, the memory key 23, the pattern designation keys 25a to 25d, the stitch number key 26, the stitch width key 27 and the RAM 39 correspond to the length when sewing a predetermined length. A first setting means is provided for setting a programming sewing mode as a sewing pattern for setting variables related to sewing such as the number of stitches to be stitched or the stitch width from the end of the work cloth. Also, the memory key 21,
By using the memory key 23, the thread trimming number key 28, the clear key 29, the addition and subtraction keys 30 to 32, and the RAM 39, an arbitrary normal sewing mode which is released when the thread trimming device is operated the set number of times is sewn. The second setting means for setting as. Further, the reproduction key 24, the pattern designating keys 25a to 25d, and the RAM 39 constitute a third setting means for setting free combination data of each sewing pattern in the programming sewing mode and the normal sewing mode.

Next, regarding the action of the sewing machine configured as described above,
An example of a series of sewing steps performed in the order from the collar sewing as shown in FIG. 6 to the collar mounting as shown in FIG. 7 will be described. The programs shown in the flowcharts of FIGS. 4 and 5 proceed under the control of the CPU 34.

Now, in order to set the collar sewing pattern as shown in FIG. 6, first, the power source (not shown) of the sewing machine is turned on. As a result, the CPU 34 waits for the memory key 21 to be turned on in step S1 shown in FIG. 4, and when the key 21 is turned on, the memory mode is set. In the next step S2, one of the pattern designation keys 25a to 25d is selected. Waits for ON, and the pattern area 39b corresponding to the key 25a is designated by the ON operation of one of the keys (in this case, the pattern designation key 25a), and the process proceeds to step S3 and step S17. In steps S3 and S17, waiting for the cloth thickness sensing key 22 or the thread cutting number key 28 to be turned on, and when the cloth thickness sensing key 22 is turned on, the programming sewing mode is selected. At this time, the CPU 34 causes the light projector 16 to emit light, the light is transmitted through the cloth (illustrated in FIG. 6) of the collar 40 placed on the work cloth supporting surface 9 and detected by the light receiver 17, and the CPU 34 The cloth thickness data is written in the working area 39a of the RAM 39 according to the amount of transmitted light, and the data is displayed on the display unit 33. Then, in step S4, the stitch width key 27 is operated to wait for the input of the stitch width, and when the stitch width is input, the value is written in the working area 39a and the process proceeds to step S5.

In step S5, the front depression of the pedal 19 is waited, and when the front depression of the pedal 19 is performed, the CPU 34 causes the motor 7 to operate.
To start. As a result, the sewing machine is operated in step S6, the stitch forming device and the cloth feeding device are operated, and the sewing from the sewing start position B to the collar position P1 shown in FIG. 6 is performed. At this time, in step S7, the CPU 34 stores the feed pitch data in the RAM 39 based on the signal from the feed pitch detection sensor 15.
Write in. In step S8, the CPU 34 waits for the cloth edge detection signal from the light receiver 17, and if detected, moves to step S9. In step S9, the CPU 34 detects the feed amount from the time of detecting the cloth edge to the time of the first needle drop after the detection of the cloth edge based on the periodic signal from the needle position detector 11. Further, step S10
Then, the CPU 34 calculates the end sewing length excluding the feed amount and the stitch width, and sets the number of stitches for sewing the end sewing length. Thereafter, the CPU 34 waits for the end of the set number of stitches in step S11, and upon completion, that is, the stitch is at the neck position P1.
When step S12 is reached, the process proceeds to step S12, after which the motor 7 is stopped and the sewing machine is stopped at the collar position P1.

Next, the CPU 34 waits for the memory key 23 to be turned on in step S13, and when the key 23 is turned on, the sewing data is RA
From the M39 working area 39a to the pattern designation key 25
Transfer to the pattern area 39b designated by a.

After that, the CPU 34 proceeds to step S14 for the pedal 19 for thread trimming.
It is determined whether or not the rearward depression is performed, but since thread trimming is not performed up to the sewing end position E where sewing ends, the program returns to step S3, and sewing is performed again in steps S3 to S14. , That data is RAM39
Is written in the pattern area 39b.

When the pedal 19 is depressed backward at the sewing end position E, the CPU 34 operates the thread cutting solenoid 37 to perform thread cutting in step S15. Subsequently, in step S16, when the key 23 is turned on, the CPU 34 writes the operation data of the thread trimming device in the pattern area 39b of the RAM 39 when the key 23 is turned on.

Subsequently, the setting of the sewing pattern based on the normal sewing mode for sewing the collar stand attachment as shown in FIG. 7 will be described. In this case, in step S2, waiting for one of the other pattern designating keys 25b to 25d other than the pattern designating key 25a operated at the time of setting the collar sewing pattern to be turned on, and one of the keys (in this case, the pattern Specified key
25b) and the pattern area 39c is designated to the key 25b, and the process proceeds to step S3 and step S17.

When the thread trimming number key 28 is turned on in step S17, the addition and subtraction keys 30 to 3 are executed in the routine of step S18.
The number of times of thread trimming is set by the pressing operation of 2. In this collar stand attachment, as shown in FIG. 7, it is assumed that the upper portion L1 and the lower side portion L2 of the collar stand 41 are sewn at two positions, and the number of thread trimming operations is performed by the addition and subtraction keys 30 to 32. Set to 2 times. Then, in step S19, wait for the memory key 23 to be turned on, and when the key 23 is turned on, the CPU 34 attaches the neckband based on the normal sewing mode as a sewing pattern that is released after the second thread trimming, and The data is written in the pattern area 39c of the RAM 39.

As described above, two types of sewing pattern data are set, that is, a collar sewing pattern based on the programming sewing mode and a sewing pattern released after the second thread trimming based on any normal sewing mode.

Therefore, the reproduction sewing work based on these data will be described with reference to FIG. When the reproduction key 24 is operated in step S19, the reproduction mode is set. Then CPU34
In step S20, waits for a combination operation of the two keys 25a, 25b for designating the sewing pattern of the already set collar sewing and collar stand of the pattern designating keys 25a-25d, and both keys 25a, 25b are the keys 25a, 25a, When pressed in the order of 25b, the pattern areas 39b and 39c corresponding to the keys 25a and 25b are designated.

Succeedingly, in a step S21, the CPU 34 determines whether or not the first sewing pattern is the pattern in the normal sewing mode set by the number of times of thread trimming, out of the data of the series of sewing processes.
Since the first pattern is the programming sewing mode pattern, the determination result is NO and the process proceeds to step S22. In step S22, a determination is made as to whether or not the control is performed by each sensor, the determination result is YES, and in the following step S23, the CPU 34 reads the stitch width data.
Then, the collar 40 is placed on the work cloth supporting surface 9 of the sewing machine,
In step S24, the forward depression of the pedal 19 is waited, and when the pedal 19 is depressed forward, the next step S25
The sewing machine is driven by. As a result, sewing is performed from the sewing start position B in FIG. 6 and the feed pitch is detected in step S26.

Subsequently, in step S27, waiting for the cloth edge to be detected, and when the cloth edge is detected, the feed amount from the cloth edge detection to the first needle drop is detected in step S28, and further in step S29. The number of stitches at the end sewing length (the length obtained by subtracting the feed amount and the stitch width from the distance between the needle 5 and the light receiver 17) is set. In the subsequent step S30, the end of the end sewing length is waited for, and the end position P is determined in step S31 by the end.
If the result of the determination is NO, that is, before the sewing end position E is reached, the process proceeds to step S32, the operation of the sewing machine is stopped, and the process proceeds to step S33. . In step S33, it is determined whether or not it is the final stage of the collar sewing pattern, and if the determination result is NO, the process returns to step S22. Therefore, the sewing of the next portion is restarted.

Then, when the sewing end position E is reached, the determination result in step S31 becomes YES, the process proceeds to step S36, the thread trimming device is operated to perform thread trimming, and then step S3.
At 7, the sewing machine is stopped, the pattern for sewing the collar is finished, and the process proceeds to step S35.

Then, in step S35, it is determined whether or not it is the final stage of the program of the series of sewing processes, and in this case, the collar 41 is sewn next, so the determination result is NO and the process returns to step S21. . In step S21, since the sewing pattern is a sewing pattern set by the number of times of thread trimming, the determination result is YES and the process proceeds to step S38. In step S38, the CPU 34 waits for the front depression of the pedal 19, and when the front depression of the pedal 19 is performed, the sewing machine is operated in step S39, and the upper portion L1 is sewn. After that, when the front depression of the pedal 19 is released at the sewing end position of the upper side portion L1,
The CPU 34 stops the operation of the sewing machine and proceeds to step S40. In step S40, the rearward depression of the pedal 19 is waited, and when the pedal 19 is rearwardly depressed, the first thread trimming is performed in step S41.

Next, the CPU 34 proceeds to step S42, where the CPU 34 determines whether or not the number of times of thread trimming has reached the set value, and in this case, the determination result is NO and the process returns to step S38. And
Shift to sewing of the lower part L2, repeat steps S38 to S42, and at the sewing end position of the lower part L2, pedal
When 19 is depressed backward for the second time, thread trimming is performed and the result of the determination in step S42 is YES.
Proceed to S43. In step S43, the CPU 34 determines whether or not it is the final stage of the program for the series of sewing processes. In this case, the determination result is YES, and all the series of sewing processes from collar sewing to neck stand attachment are completed.

As described above, in this embodiment, each of four sewing patterns in the normal sewing mode, which is released after the preset number of times of thread trimming by programming sewing by operating the pattern designating keys 25a to 25d, are separately provided. You can set the memory. Also, at the time of reproduction sewing work, each pattern designation key
The sewing patterns can be freely combined by the operations of 25a to 25d, and the respective sewing patterns can be continuously reproduced based on the combination order. Therefore, regardless of the programming sewing mode or the normal sewing mode, a series of sewing processes in which each sewing pattern is combined can be continuously reproduced without a switch operation for mode switching, so that a smooth sewing operation can be performed.

EFFECTS OF THE INVENTION As described in detail above, according to the present invention, the sewing patterns in the programming sewing mode or the sewing patterns in the arbitrary normal sewing mode are stored, respectively, and the stored sewing patterns can be freely combined with each other. There is an excellent effect that the combined sewing patterns can be continuously reproduced and sewn without a switch operation for mode switching.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a sewing machine embodying the present invention, FIG. 2 is a cutaway front view showing an operation panel, FIG. 3 is an electric block circuit diagram, and FIG. 4 is a memory setting. A flow chart, FIG. 5 is a reproduction flow chart, FIG. 6 is a plan view showing an example of neck sewing, and FIG. 7 is a plan view showing an example of attaching a collar stand. 4 ... Needle bar, 5 ... Needle, 9 ... Work cloth support surface, 10 ... Thread ring catcher, 13 ... Presser foot, 14 ... Feed dog, 21 ... Memory key, 22 ... Fabric thickness Sensing key, 23 …… Remember key, 24 ……
Play key, 25a to 25d …… Pattern designation key, 26 …… Stitch number key, 27 …… Stitch width key, 28 …… Thread trimming number key, 29
...... Clear key, 30, 31 …… Addition key, 32 …… Subtraction key, 34 …… CPU, 39 …… RAM.

Claims (1)

[Claims] 1. A stitch forming device (4,5,10) for forming stitches on the work cloth, the needle (5) being moved up and down through the work cloth on the work cloth support surface (9). Etc.), a work cloth feeding device (13, 14 etc.) for feeding the work cloth on the work cloth supporting surface (9), and the number of stitches or work cloth corresponding to the length when sewing a predetermined length. First setting means (21-23, 25a-) for setting as a pattern a programming sewing mode based on variables set in connection with sewing such as stitch width from the end
25d, 26, 27, 39 etc.) and a second setting means (2) for setting an arbitrary normal sewing mode that continues until a release signal is input as a pattern.
1,23,25a to 25d, 28 to 32,39, etc.) and a third setting means (24,25a to 25d, for setting free combination data of each pattern of the programming sewing mode and the normal sewing mode). 39 etc.) and the stitch forming device (4,5, 10 etc.) so that the work cloth is sewn based on the combination data set in the third setting means (24, 25a to 25d, 39 etc.). ) And a control means (34) for controlling the operation of the work cloth feeding device (13, 14 etc.).