JPH10314483A - Sewing machine driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing machine driving device for storing a specified shaft angle or the range of angles corresponding to a purpose by turning a sewing machine shaft without directly touching a sewing machine pulley with a hand concerning a sewing machine having a protection device for a sewing machine rotating part or an oscillating part. SOLUTION: This device is provided with a motor 5 for driving a sewing machine 1, control means 26 including a driving means 27 for driving the motor and an operation switching means 28 for controlling the operation of sewing machine 1 and the rotation of motor 5, and switch 29 and when the operation switching means 28 is switched to position control operation, the control means 26 commands the driving means 27 so as to drive the sewing machine 1 at low speed while rotating it forward during 1st operation and to drive the sewing machine 1 at low speed while rotating it backward during 2nd operation through the position control operation and further, its angle is stored by 3rd operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine driving device for controlling the rotation of an industrial sewing machine and the mechanism of the sewing machine.

[0002]

2. Description of the Related Art In recent years, a sewing machine driving device for driving an industrial sewing machine generally controls sewing machine operation such as rotation of a sewing machine, stop control at a fixed position, and automatic thread trimming in conjunction with rotation of a main shaft of the sewing machine. It is becoming. Also, the layout of the sewing machine and the sewing machine drive device has been developed to cover the rotating part due to consideration for worker safety, etc., and a small and high output servo motor has been developed, which is directly connected to the sewing machine shaft or directly attached to the sewing machine head. Changes have been seen because the structure has begun to be adopted.

The general arrangement of the sewing machine and the sewing machine driving device, the structure of interlocking with the main shaft of the sewing machine and the operation thereof will be described with reference to the drawings.

FIG. 2 shows a general arrangement of a sewing machine and a sewing machine driving device. FIG. 11 shows the structure of a position detector that generates a signal for the sewing machine driving device to interlock with the sewing machine spindle. FIGS. 4 and 12 show an example of a sewing machine having a structure in which an operator cannot easily turn the main shaft of the sewing machine by hand. FIG. 13 shows the arrangement of various protective covers for ensuring the safety of the worker from the rotating part.

First, in FIG. 2, the sewing machine 1 is driven by a motor 5 via a transmission mechanism including a sewing machine pulley 2, a belt 3, and a motor pulley 4. The sewing machine 1 includes a position detector 7 that detects the needle position of the sewing machine by detecting the angle of the main shaft 6 of the sewing machine, and an automatic thread trimming mechanism, a reverse stitching mechanism, and a cloth presser lifting mechanism (not shown) as sewing machine operations. Yes,
The control device 8 controls the driving of the motor 5.
The operator operates the pedal 9, and the movement of the pedal 9 is transmitted to the control device 8 by the pedal sensor 10, and drives each mechanism of the motor 5 and the sewing machine 1. For example, if the worker
When the controller is depressed, the control device 8 rotates the motor 5 at a high speed. When the pedal 9 is returned to the neutral position, the control device 8
Applies a brake to the motor 5 to rapidly reduce the speed, and accurately stops at the needle lower position or the needle upper position by the position detector 7, so-called fixed position stop control is performed. When the pedal 9 is depressed backward, a sewing machine mechanism such as reverse stitch control, automatic thread trimming control, or cloth presser control is driven.

Here, the structure of the position detector 7 serving to link the rotation of the sewing machine 1 with the control of the control device 8 will be described with reference to FIG.

In FIG. 11, a position detector 7 is connected to the main shaft 6 of the sewing machine, and detects a rotating plate A11 and a rotating plate B12 which rotate in synchronization with the main shaft, a screw C13 for fixing the rotating plate, and a needle lower position. An optical sensor A14, an optical sensor B15 for detecting the position above the stylus, and a reflecting portion A1 arranged to face the optical sensor A14 at a position corresponding to the position below the stylus of the rotating plate A11.
6, a reflecting portion B17 arranged to face the optical sensor B15 at a position corresponding to the needle position of the rotating plate B12, a cover 18, and a screw D19 for fixing the cover. Adjustment of the detection position is performed by loosening the screw D19, removing the cover 18, slightly loosening the screw C13, and shifting the rotating plate 11 or 12 by hand. After the adjustment is completed, the screw C13 is tightened and fixed. is there.

On the other hand, there is a motor mounting structure to the sewing machine head shown in FIG. 4 due to the progress of motor technology, and a sewing machine head having a long structure shown in FIG. 12 for sewing applications.

In such a sewing machine and the sewing machine driving device, as shown in FIG. 13, the upper side of the sewing machine table 22 is covered with the sewing machine pulley 2, the belt 3 and the motor pulley 4 by covers 20, 21 as shown in FIG. A structure that covers the lower side is also common. Alternatively, a finger guard 23 shown in FIG. 2 having a structure in which a finger does not approach a sewing needle or an inclination sensor 24 as shown in FIG.
There is also a structure in which the motor is stopped when the sewing machine 1 is tilted.

[0010] Further, as a technique for turning the sewing machine shaft without touching the sewing machine pulley 2 for various adjustments and confirmations, and a technique for electrically setting a stop position or a signal generation position without relying on mechanical adjustment. The following are known. As a technique for turning the sewing machine shaft for various adjustments and confirmations, there is JP-A-5-277275. This is to stop at a fixed position with a stop command from a normal sewing speed, and stop at an arbitrary position without stopping at a fixed position with a stop command from ultra-low speed rotation. As a technique for electrically setting and adjusting the stop position, there are JP-A-7-670 and JP-A-8-150279. The technique disclosed in JP-A-7-670 discloses a sewing machine shaft. Detecting the angle with respect to the reference angle, inputting the angle to be adjusted in advance, turning the sewing machine pulley by hand, and notifying at the angle to be adjusted, for the purpose of easily and accurately performing the subsequent mechanical adjustment work. is there. Also, JP-A-8-1
Japanese Patent No. 50279 discloses an apparatus that detects an angle of a sewing machine shaft with respect to a reference angle, sets an upper stop position range and a lower stop position range in advance, and generates an upper position signal or a lower position signal in the stop position range. It is configured to stop at a signal. Japanese Patent Application Laid-Open No. 6-205888 discloses a technique for generating a signal in conjunction with the rotation of a sewing machine.
There is known a technique of outputting a signal at an angle set in advance by a setting device.

[0011]

Conventionally, in the sewing machine and the sewing machine driving device having the above-described arrangement, when adjusting the sewing machine, replacing the sewing needle, or threading the needle with the sewing machine, an operator directly touches the sewing machine. In general, the pulley is turned by hand and adjusted at an angle suitable for each operation, or an adjustment at an extremely low speed as disclosed in Japanese Patent Application Laid-Open No. 5-277275 is available. However, it is difficult for an operator to operate the sewing machine pulley, or it is necessary to remove the cover each time. Further, in a sewing machine having a long head structure, when an operator attempts to operate the sewing machine pulley, the arm is extended far away, and an excessive posture is required. Alternatively, when the motor is rotated at an extremely low speed and adjusted, extra time is required, for example, when the motor is stopped past an adjustment position, the motor needs to be rotated once more at an extremely low speed. Further, the adjustment of the stop position and the adjustment of the generation angle of the signal interlocked with the sewing machine axis are performed by the position detector 7 as shown in FIG.
It is necessary to shift the rotating plate A or the rotating plate B by hand, or to set a stop position range and a signal output range in advance using a setting device.

[0012] In recent years, there has been a trend toward emphasizing the safety of workers, and it has become important to cover as much of the rotating and swinging parts as possible.

Therefore, in the conventional arrangement of the sewing machine and the sewing machine driving device and the structure of the position detector, the sewing machine needs to be replaced, the thread threaded to the needle, adjustment of the stop position, adjustment of the interlocking signal with the sewing machine shaft, adjustment of the sewing machine mechanism, etc. In such a case, there is a problem that an extra structure and labor are required or the operator is forced to take an unreasonable posture.

[0014]

In a sewing machine driving apparatus according to the present invention, a motor for driving the sewing machine, a driving means for driving the motor, and a control means including an operation switching means for controlling the operation of the sewing machine and the rotation of the motor are provided. And operating means,
When the operation switching means is switched to the position adjustment operation, the control means drives the sewing machine at a low speed in a forward rotation during a certain operation of the operation means, and rotates the sewing machine at a reverse rotation during another operation. It is configured to instruct the driving means to perform a position adjustment operation for low-speed driving.

Further, the operation means is configured to perform another operation to store the angle of the sewing machine axis.

According to the present invention, the sewing machine shaft can be safely rotated without touching the sewing machine pulley and the position detector, and further, the angle of the sewing machine shaft can be arbitrarily stored, and the linkage with the sewing machine can be optimally performed. A possible sewing machine drive device can be provided.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION
A motor that drives the sewing machine, a driving unit that drives the motor, a control unit that includes an operation switching unit that controls the operation of the sewing machine and the rotation of the motor, and a first operation unit, wherein the first operation unit includes: An operation command of a pedal depression signal and a pedal depression signal is output to the control means, and the control means switches the operation switching means to a position adjustment operation by the operation setting means, and the pedal depression signal is inputted. During this time, the sewing machine is driven at a low speed with forward rotation,
While the pedal depression signal is being input, the drive means is instructed to perform a position adjustment operation of driving the sewing machine at a low speed in the reverse direction, and in a normal sewing operation, the drive of the sewing machine is stopped. The position can be adjusted by depressing the pedal to operate the speed and turning back the pedal to operate the automatic thread trimming or the work clamp lifting mechanism.Therefore, the sewing machine shaft can be moved in both the forward and reverse directions without adding new operation means. Can be rotated arbitrarily. In addition, since it rotates at a low speed, it can be stopped accurately at an arbitrary position, and can be carried out safely for both the sewing machine mechanism and the operator.

According to a second aspect of the present invention, there is provided a motor for driving a sewing machine, a driving unit for driving the motor, a control unit including an operation switching unit for controlling the operation of the sewing machine and the rotation of the motor, and a first operation unit. Means, the sewing machine comprises a protection mechanism for covering the rotating part and the oscillating part, the protection mechanism having first detection means for emitting a signal when it is not in a predetermined position,
The first operation means outputs a pedal depression signal and an operation command of a pedal depression signal to the control means, and the operation switching means operates the sewing machine according to the operation instruction from the first operation means. When a signal from the first detecting means is issued, a command to stop the motor is issued to the driving means, and when a signal from the first detecting means is issued while the sewing machine is stopped, The operation switching means is switched to the position adjustment operation, and the sewing machine is driven at a low speed in the forward direction while the pedal depression signal is being input, and the sewing machine is rotated in the reverse direction while the pedal depression signal is being inputted. It is configured to instruct the driving means to perform the position adjustment operation for low-speed driving, and the operator consciously performs an operation to remove a protection mechanism such as a finger guard of the sewing machine. If only it enables position adjustment operation, an effect that can realize the position adjustment operation without changing the operation switching means.

According to a third aspect of the present invention, there is provided a motor for driving a sewing machine, a driving unit for driving the motor, a control unit including an operation switching unit for controlling the operation of the sewing machine and the rotation of the motor, and a first operation unit. Means, the sewing machine comprises tilt detection means, the tilt detection means emits a signal when the sewing machine is tilted more than a certain angle, the motor is directly attached to the sewing machine, the first operating means, An operation command for a pedal depression signal and a pedal depression signal is output to the control means, and the operation switching means emits a signal from the inclination detection means during operation of the sewing machine according to an operation instruction from the first operation means. When a signal is issued from the inclination detecting means while the sewing machine is stopped, a command to stop the motor is issued to the driving means.
The operation switching means is switched to a position adjusting operation, and the sewing machine is driven at a low speed in a forward rotation while the pedal depression signal is being input, and the sewing machine is rotated in a reverse rotation while the pedal depression signal is being inputted. It is configured to instruct the drive means to perform the position adjustment operation for low-speed drive.Since the motor is directly attached to the sewing machine, the motor can be turned even when the sewing machine is tilted down, and the operator can adjust the mechanism by adjusting the mechanism. Only when the sewing machine is intentionally depressed, the position adjusting operation can be performed, and the position adjusting operation can be realized without changing the operation switching means.

According to a fourth aspect of the present invention, there is provided a motor for driving a sewing machine, a driving means for driving the motor, a control means including an operation switching means for controlling the operation of the sewing machine and the rotation of the motor, and a second and a third control means. Operation switching means, wherein the operation switching means causes the drive means to rotate the motor in the forward direction at a low speed only while the second operation means is operating, and the operation switching means only when the third operation means is operating. The drive means is configured to instruct the motor to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed, and the position adjustment operation can be realized even with a sewing machine that does not perform an operation with a pedal. The position adjustment operation can be efficiently performed directly by operating only the second and third operation means without making any change.

According to a fifth aspect of the present invention, there is provided a motor for driving a sewing machine, a driving unit for driving the motor, a control unit including an operation switching unit for controlling the operation of the sewing machine and the rotation of the motor, and a fourth operation unit. The sewing machine includes second detection means for detecting a rotation angle of a sewing machine shaft, and the stop position detection means detects the rotation of the sewing machine shaft by the second detection means. A wide angle is recognized as a needle upper position, and a fairly wide angle on the needle lower dead center side is recognized as a needle lower position. If the position where the fourth operation means is operated is within the needle lower position range, the position is recognized as a needle lower position. Stop position, if the position is within the needle up position range, the position is stored as the needle up stop position, and the sewing machine operation is stopped by the control unit. Upper stop position setting and needle lower stop Easily identify setting positions in the same operation, an effect that can be stored.

According to a sixth aspect of the present invention, there is provided a motor for driving a sewing machine, a driving unit for driving the motor, a control unit including an operation switching unit for controlling the operation of the sewing machine and the rotation of the motor, and a second and a second control unit. And a stop position detecting means, wherein the sewing machine detects a rotation angle of the sewing machine shaft.
The stop position detecting means sets the considerably wide angle on the needle top dead center side of the sewing machine to the needle upper position and sets the considerably wide angle on the needle bottom dead center side to the needle lower position by the second detecting means. Recognizing and switching the operation, the second operating means causes the driving means to rotate the motor in a forward direction at a low speed while the second operating means is operating, and the driving means causes the motor to rotate in the positive direction while the third operating means is operating. Is commanded to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed, and the stop position detecting means, if the position where the second and third operating means are simultaneously operated is within the needle down position range, If the position is within the needle down stop position and the needle up position range, the position is stored as the needle up stop position,
The stop position of the sewing machine operation is set by the control means. The position can be adjusted without turning the pulley by hand, and by simultaneously operating the second and third operation means, a new memory can be stored. Without the need for operating means
There is an effect that the stop position can be easily stored.

According to a seventh aspect of the present invention, there is provided a motor for driving a sewing machine, a driving means for driving the motor, a control means for controlling the operation of the sewing machine and the rotation of the motor, a fourth operating means, and a synchronizing signal. The sewing machine includes second detection means for detecting a rotation angle of the sewing machine shaft, and the synchronization signal output means recognizes the angle of the sewing machine shaft by the second detection means, and performs the fourth operation. The range in which the means is operated is stored as a synchronization signal output angle, and the synchronization signal is output only in the range of the stored angle in accordance with an instruction from the control means, and the synchronization signal output range is set by a special setting device. There is an operation that can be easily set without requiring a.

According to the present invention, there is provided a motor for driving a sewing machine, a driving means for driving the motor, a control means including an operation switching means for controlling the operation of the sewing machine and the rotation of the motor, and a second and a third control means. 3, the sewing machine includes second detection means for detecting a rotation angle of a sewing machine shaft, and the operation switching means includes the driving means while the second operation means is operating. Commanding the drive means to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed while the third operating means is operating, and The output unit recognizes a specific angle range of the sewing machine axis as an ON section and another angle range as an OFF section by the second detection unit,
If the position where the second and third operating means are simultaneously operated is an ON section, the position is stored as an ON angle, and if the position is an OFF section, the position is stored as an OFF angle. It is configured to output a signal in the range from the ON angle to the OFF angle in synchronization with the rotation,
There is an effect that the ON angle and the OFF angle of the synchronizing signal can be set and stored by a simple operation without touching the sewing machine pulley simply by previously determining the ON section or the OFF section in a considerably wide range.

According to a ninth aspect of the present invention, the synchronization signal output means recognizes a synchronization signal on or off section when the needle bar of the sewing machine is rising and a synchronization signal off or on section when the needle bar is falling. By simply specifying the angle of the needle bar-shaped dead center or the needle bar bottom dead center, the ON section and the OFF section are determined without setting a range in advance.

According to a tenth aspect of the present invention, there is provided a motor for driving a sewing machine, a driving unit for driving the motor, a control unit including an operation switching unit for controlling the operation of the sewing machine and the rotation of the motor, and a second and a second control unit. The sewing machine further includes second detecting means for detecting a rotation angle of the sewing machine shaft, and the operation switching means includes a second operating means for controlling the operation of the second operating means. Causes the driving means to rotate the motor in the forward direction at a low speed,
During operation of the operating means, the drive means is instructed to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed,
The stop position detecting means recognizes, by the second detecting means, a considerably wide angle on the needle top dead center side of the sewing machine as a needle up position and a fairly wide angle on the needle bottom dead center side as a needle down position,
If the second and third operation means are within the needle down position range, the positions are stored as the needle down stop position, and if they are within the needle up position range, the positions are stored as the needle up stop position. The synchronization signal output means recognizes the angle of the sewing machine axis by the second detection means, and operates the second and third operation means simultaneously, and then switches the second operation means to an operation stop position. When returning to the first position, the position is stored as the on angle or off angle, and when returning to the third operating means, the position is stored as the off angle or on angle. It is configured to output a signal in the range from the ON angle to the OFF angle in synchronization with the rotation of the needle, after adjusting the angle by the position adjustment operation, the needle stop position only with the second and third operation means, Needle lower stop position, synchronous signal There is on an angle and effects can set the synchronization signal off angle.

According to an eleventh aspect of the present invention, the control means comprises:
It is configured to include a warning means, switch to the position adjustment operation, and activate the warning means when performing the position adjustment operation. In the case of the position adjustment operation, the warning means such as a buzzer is used to further alert the worker. There is an effect of promoting.

According to a twelfth aspect of the present invention, the control means comprises:
It includes a warning means and a delay means, and is switched to a position adjustment operation.
In accordance with the drive command of the operating means, the alarm means is operated and the delay means performs the position adjustment operation with a certain time delay. At the time of the position adjustment operation, the warning means such as a buzzer alerts the worker. Then, the sewing machine is rotated with a delay after the prompting of the operation, so that the operator can be given a margin for interrupting the operation, so that the operation can be performed safely.

According to a thirteenth aspect, the control means comprises:
The sequence means includes a sequence means. The sequence means has a configuration in which the motor drive of the position adjustment operation by one drive command is enabled only for a predetermined period of time. Therefore, the operation can be safely performed.

According to a fourteenth aspect of the present invention, the control means includes:
The sequence means includes a sequence means. The sequence means has a configuration in which the motor drive of the position adjustment operation by one drive command is enabled only for a predetermined rotation angle. Therefore, there is an effect that the operation can be safely performed since the operator can be given a margin of operation interruption.

According to a fifteenth aspect of the present invention, the control means includes:
Including sequence means, the sequence means is configured to repeat stopping of driving of the motor by the position adjusting operation at a predetermined time interval, thereby preventing excessive rotation due to erroneous operation and providing a worker with enough time for interruption of operation. And it is possible to operate efficiently without the need for repeated operations.

According to a sixteenth aspect of the present invention, the control means includes:
Including sequence means, the sequence means is configured to repeat the motor drive by the position adjustment operation by a constant rotation angle at a predetermined interval time, eliminate variations in the rotation angle, prevent excessive rotation due to erroneous operation, This gives the operator time to suspend operation,
There is an effect that the operation can be efficiently performed without the need to perform the operation repeatedly.

According to a seventeenth aspect of the present invention, the driving means comprises:
While the motor is stopped by the position adjustment operation, the servo lock is applied to the motor, and the shaft does not rotate freely when tightening a screw for adjusting the sewing machine mechanism, so that the operation can be performed efficiently.

According to an eighteenth aspect of the present invention, the driving means includes a current limiting means, and when the operation switching means switches to the position adjusting operation, the current limiting means limits the current to the motor. Even if foreign matter gets into the rotating or swinging part during the position adjustment operation, the current is limited and the driving force of the motor is limited, so serious damage to the sewing machine mechanism and the operator will not occur. Has the effect of preventing.

According to a nineteenth aspect of the present invention, the driving means includes a speed limiting means, and when the operation switching means switches to the position adjusting operation, the rotational speed of the motor is limited by the speed limiting means. Even if the drive command from the control means malfunctions due to noise or the like,
The speed limit function unique to the driving means has an effect of preventing serious damage to the sewing machine mechanism and the operator.

According to a twentieth aspect of the present invention, the control means includes a timer means, and when the operation is switched to the position adjustment operation by the operation of the second and third operation means, the operation of the second and third operation means is controlled. Even after the operation is completed, the position adjustment operation is continued for a certain period of time by the timer means, and the normal sewing operation is prohibited.The adjustment position is significantly reduced due to an erroneous operation such as depressing a pedal at the stop during the position adjustment. It has the effect of preventing insanity.

According to a twenty-first aspect of the present invention, there is provided a motor for driving a sewing machine, a driving means for driving the motor, a control means for controlling the operation of the sewing machine and the rotation of the motor, a synchronizing signal output means, and a frequency dividing means. The sewing machine further includes second detection means for detecting a rotation angle of a sewing machine shaft, and the synchronization signal output means recognizes the angle of the sewing machine by the second detection means, and stores a predetermined angle range, While permitted by the instruction of the control means, outputs a signal only in the range of the stored angle in synchronization with the rotation of the sewing machine, the frequency dividing means, in the range of output by the synchronization signal output means,
A signal divided for each angle obtained by dividing the stored angle range by a predetermined value is output in synchronization with the rotation of the sewing machine. Since the frequency can be divided into the same number of pulses irrespective of the width of the angle, the pulse motor can be driven by the same angle within the width of the synchronization signal.

According to a twenty-second aspect of the present invention, the frequency dividing means includes a first setting means, and the first setting means is configured to set the number of divisions for dividing the signal output range. Has the effect that the number can be set later.

According to a twenty-third aspect of the present invention, the frequency dividing means comprises:
In the range of output by the synchronization signal output means, a signal obtained by dividing the stored angle range for each predetermined angle is output in synchronization with the rotation of the sewing machine. Since the frequency can be divided into a fixed number of pulses irrespective of the width of the output angle of the synchronization signal, there is an effect that the driving of the pulse motor or the like can be changed according to the width of the synchronization signal.

According to a twenty-fourth aspect of the present invention, the frequency dividing means includes a second setting means, and the range of the stored angle is set by the second setting means in the range of the output by the synchronizing signal output means. The signal divided for each angle is output in synchronization with the rotation of the sewing machine, and the angle of the output pulse can be set later.

According to a twenty-fifth aspect of the present invention, the motor includes third detecting means for outputting a plurality of signals during one rotation of the motor, and the second detecting means detects a specific rotational position of the sewing machine shaft. The stop position detecting means or the synchronizing signal output means counts the signal from the third detecting means based on the signal from the second detecting means to know the angle of the sewing machine shaft. Is provided with a detection means having a simple structure capable of detecting only one rotation position of the sewing machine shaft,
As a detecting means, there is an effect that a speed detector for detecting a motor speed can be commonly used, so that it can be realized simply and inexpensively.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

(Embodiment 1) The first embodiment describes an embodiment corresponding to claim 1 of the claims.

FIG. 1 is a block diagram of a sewing machine driving device according to a first embodiment of the present invention, and FIG. 2 shows a general arrangement of the sewing machine and the sewing machine driving device.

The arrangement and operation of the sewing machine and the sewing machine driving device will be described with reference to FIGS. The sewing machine 1 is driven by a motor 5 via a transmission mechanism including a sewing machine pulley 2, a belt 3, and a motor pulley 4. The sewing machine 1 includes a position detector 7 that detects the needle position of the sewing machine by detecting the angle of the rotation axis of the sewing machine, and an automatic thread trimming mechanism, a reverse stitch mechanism, a cloth presser lifting mechanism, etc. (not shown) as the sewing machine operation. And is controlled by the control device 25 together with the driving of the motor 5. The control device 25 includes the pedal sensor 10 as a first operation unit, a control unit 26, and a driving unit 27. The control unit 26 includes an operation switching unit 28, and the operation switching unit 28 is connected to a switch 29. The switch 29 may be attached to the sewing machine 1 away from the control device main body. The driving means 27 supplies power to the motor 5 according to a command from the control means 26 to drive the motor 5, and
The speed of the motor 5 is monitored and controlled by the motor sensor 30. The signal of the position detector 7 is input to the control means 26.

The operation of the first embodiment configured as described above will be described below. The operator operates the pedal 9, and the movement of the pedal 9 is transmitted to the control device 25 by the pedal sensor 10 as a depression signal Pd and a depression signal Pu. When the switch 29 is turned off and the operation switching means 28 performs the normal sewing operation, the control means 26 instructs the driving means 27 to adjust the motor 5 to the driving amount of the pedal 9 by the signal Pd when the operator depresses the pedal 9. Command to rotate at proportional speed. When the pedal 9 is returned to the neutral position and the signal Pd is turned off, the control means 26 issues a command for stopping the home position to the driving means 27, brakes the motor 5 to rapidly reduce the speed, and moves the needle down by the position detector 7. It stops precisely at the position or the needle position, and performs a so-called fixed position stop. Pu when pedal 9 is depressed backward
In response to the signal, the control means 26 drives a sewing machine mechanism such as reverse stitch control, automatic thread trimming control, or cloth presser control. On the other hand, when the switch 29 is turned on and the operation switching means 28 performs the position adjusting operation, the control means 26 causes the motor 5 to rotate in the forward direction with respect to the driving means 27 by the signal Pd when the operator depresses the pedal 9. Command to rotate. When the pedal 9 is returned to the neutral position and the signal Pd is turned off, the control means 26 issues a command to the driving means 27 to stop immediately without stopping at the fixed position, and brakes and stops the motor 5. Further, the control means 26 causes the driving means 2 to respond to the Pu signal when the pedal 9 is depressed backward.
7 is instructed to rotate the motor 5 in the reverse direction at a low speed. Similarly, when the pedal 9 is returned to the neutral position, the pedal 9 immediately stops without stopping at the fixed position.

(Embodiment 2) The second embodiment describes an embodiment corresponding to claims 2 and 3 of the claims. FIG. 3 is a block diagram according to the second embodiment.

Hereinafter, the configuration of the sewing machine driving device according to the second embodiment will be described. The difference from the configuration of the first embodiment is that the control device 31 includes a control unit 32, the control unit 32 includes an operation switching unit 33, and the operation switching unit 33 replaces the switch 29 with the first unit. That is, it is connected to the guard sensor 34 as the detecting means or the tilt sensor 24 as the tilt detecting means. The guard sensor 34 outputs a signal when the finger guard 23 as a protection mechanism shown in FIG. 2 is removed by a work such as threading a needle. Further, the tilt sensor 24 is attached to the sewing machine 1. The tilt sensor 24 is generally useful for a structure in which the motor 36 is directly attached to the sewing machine 1 as shown in FIG. That is, in the case of the structure in which the motor 5 is attached to the sewing machine table 22 as shown in FIG. 2, when the sewing machine 1 is tilted, the belt 3 is loosened and the rotation of the motor 5 cannot be transmitted to the sewing machine 1, but as shown in FIG. If the sewing machine 1 is directly attached to the sewing machine 1, it can be rotated even if the sewing machine 1 is tilted, which is useful as a danger prevention.

The operation of the second embodiment configured as described above will be described below. When there is no signal from the guard sensor 34 and the inclination sensor 24, the operation switching means 33 performs the above-described normal sewing operation. The operation switching unit 33 instructs the driving unit 27 to immediately stop the motor 5 for safety when a signal is input from the guard sensor 34 or the inclination sensor 24 while the sewing machine 1 is operating in the normal sewing operation. The operation switching means 33
Indicates that there is no signal from the pedal sensor 10 and the guard sensor 34 or the tilt sensor 2
When the signal from 4 is input, the operation is switched to the above-described position adjustment operation. The position adjustment operation is the same as that described in the first embodiment.

(Embodiment 3) A third embodiment describes an embodiment corresponding to claims 4 and 11 to 20 of the present invention. FIG. 5 is a block diagram of the third embodiment, and FIG. 6 is a time chart for explaining the control of the position adjustment operation.

Hereinafter, the configuration of the sewing machine driving device according to the third embodiment will be described. The difference from the configuration of the first embodiment is that the control device 38 includes a forward rotation switch 39 as a second operation means, a reverse rotation switch 40 as a third operation means, and a forward rotation switch 39 and a reverse rotation switch. 40
Is connected to the operation switching means 41, and the control means 42
Buzzer 43 as a warning means, delay time, drive time,
Operation sequence 44 for controlling repetition interval and drive angle
The driving means 45 includes a current limiting circuit 46 and a speed limiting circuit 47.

The operation of the third embodiment having the above configuration will be described below. The operation switching means 41 receives the signal from the pedal sensor 10 as a normal sewing operation.
Command 5 The signals from the forward rotation switch 39 and the reverse rotation switch 40 are used as a position adjustment operation by the driving means 4.
Command 5 That is, the driving unit 45 is instructed to perform the forward rotation at a low speed only while the forward rotation switch 39 is on, and only when the reverse rotation switch 40 is on.
5 is instructed to perform reverse rotation at low speed. The current limiting circuit 46 and the speed limiting circuit 47 of the driving means 45
Has commanded the position adjustment operation when a current of 10% to 20% of the maximum current of the normal sewing operation has been detected, or the motor sensor 30 has a motor speed of 500 r / mi.
When n is detected, the drive circuit of the motor is directly shut off.
This is a circuit in consideration of safety when an element such as a microcomputer that controls the entire control malfunctions due to noise or the like. The drive means 45 receives the position adjustment operation command from the operation switching means 41 and stops after performing the low-speed drive by the position adjustment operation. Keep the stop position from shifting. The operation sequence 44 is shown in FIG.
The position adjustment operation is performed by the control as shown in the operations 1 to 6 above. In operation 1, the sewing machine 1 rotates at low speed in forward or reverse rotation while the forward rotation switch 39 or the reverse rotation switch 40 is turned on, and while the switch is on, and from the position adjustment operation to the normal sewing operation. This is the operation of sounding the buzzer 43 during the time t1 until the return. Action 2
Means that the sewing machine rotates at a low speed in forward or reverse rotation while the forward rotation switch 39 or the reverse rotation switch 40 is on, and while the switch is on and until the sewing machine returns from the position adjustment operation to the normal sewing operation. During this time t1, the buzzer 43 is sounded, and the sewing machine 1 starts rotating with a delay of time t2 after the forward rotation switch 39 or the reverse rotation switch 40 is turned on. In the operation 3, the buzzer 43 is sounded while the forward rotation switch 39 or the reverse rotation switch 40 is on and for a time t1 until the operation returns from the position adjustment operation to the normal sewing operation. Sewing machine 1 starts rotating with a delay of time t2 after switch 40 is turned on.
One operation of the forward rotation switch 39 or the reverse rotation switch 40 is an operation in which the sewing machine 1 rotates at a low speed in the forward rotation or the reverse rotation for only the time t3. Operation 4 is performed while the forward switch 39 or the reverse switch 40 is on.
Further, the buzzer 43 is sounded for a time t1 until the operation returns from the position adjustment operation to the normal sewing operation, and the sewing machine 1 starts rotating with a delay of the time t2 after the forward rotation switch 39 or the reverse rotation switch 40 is turned on. Further, one operation of the forward rotation switch 39 or the reverse rotation switch 40 is an operation in which the sewing machine 1 rotates at a low speed in the forward rotation or the reverse rotation by a at the angle of the sewing machine shaft 6. In operation 5, the buzzer is sounded while the forward rotation switch 39 or the reverse rotation switch 40 is on and for a time t1 until the operation returns from the position adjustment operation to the normal sewing operation.
Alternatively, the sewing machine 1 starts rotating with a delay of time t2 after the reverse rotation switch 40 is turned on, and while the forward rotation switch 39 or the reverse rotation switch 40 is on, the sewing machine 1 is turned on at time t3 at intervals of time t4. This is an operation to rotate forward or reverse at low speed. Operation 6 is performed while the forward rotation switch 39 or the reverse rotation switch 40 is on.
Further, the buzzer is sounded for a time t1 from the position adjustment operation to the return to the normal sewing operation, and the sewing machine 1 starts rotating with a delay of time t2 after the forward rotation switch 39 or the reverse rotation switch 40 is turned on. Switch 39
Alternatively, while the reverse switch 40 is on, the time t4
At this interval, the rotation is performed at a low speed by the angle of the sewing machine axis at normal speed or reverse rotation.

In the third embodiment, the time t2 may not be required in the operations 1 to 6. In operation 4 and operation 6, the fixed angle a may be the angle of the motor shaft instead of the sewing machine axis. Furthermore, the current limit value and the speed limit value are merely examples, and other values may be used.

(Embodiment 4) The fourth embodiment describes an embodiment corresponding to claims 5, 6 and 25 of the claims. FIG. 7 shows a block diagram of the fourth embodiment. The configuration of the control device 48 in the fourth embodiment is different from the control device 38 in the third embodiment in that a stop position detection unit 49 and a position storage switch 50 as a fourth operation unit are added. The stop position detecting means 49 converts the signals from the forward rotation switch 39, the reverse rotation switch 40 and the position storage switch 50, the signal from the position detector 7 as the second detection means, and the signal from the motor sensor 30 as the third detection means. It is configured to input and output to the sewing machine control means 51 included in the control means 42. The sewing machine control means 51 performs control including stopping the sewing machine at a fixed position.

The operation of the fourth embodiment having the above configuration will be described below. The stop position detecting means 49 is based on a signal from the position detector 7 attached to the sewing machine spindle 6,
By calculating a signal from the motor sensor 30, that is, two signals of A phase and B phase, each having a phase difference of 90 degrees of 360 pulses per rotation in the embodiment, all the rotation positions of the sewing machine spindle 360 can be recognized. The stop position detecting means 49
As shown in FIG. 8 (a), when the top dead center of the needle bar is 0 degree, the rotation position of the sewing machine main shaft 6 (the sewing machine pulley 2 in the figure) is from 270 degrees to 90 degrees in the upper position range. As shown by, 90 to 270 degrees are recognized as the lower position range.
Here, as described in the third embodiment, the forward rotation switch 39
Alternatively, the sewing machine pulley 2 is turned by operating the reverse rotation switch 40 to stop the sewing machine pulley 2 at a position where the sewing machine pulley 2 is to be stopped by the fixed position stop operation, and the position storage switch 50 is turned on. Alternatively, the forward rotation switch 39 and the reverse rotation switch 40
On at the same time. At that time, if the position is in the range of 270 degrees to 90 degrees as shown in FIG. 8C, the stop position detecting means 49 stores the angle as the needle stop position. Similarly, the position storage switch 50 is turned on within a range of 90 degrees to 270 degrees as shown in FIG. Alternatively, when the forward rotation switch 39 and the reverse rotation switch 40 are simultaneously turned on, the stop position detecting means 49 stores the angle as a needle down stop position. That is the angle of the needle up stop position and the needle down stop position in the fixed position stop control of the sewing machine by the sewing machine control means 51.

(Embodiment 5) The fifth embodiment describes an embodiment corresponding to claims 7 and 21 to 24 of the claims. FIG. 9 shows a block diagram of the fifth embodiment. Hereinafter, the configuration of the fifth embodiment will be described. The control device 52 of the fifth embodiment is obtained by adding a synchronization signal generating circuit 53, a position storage switch 50, a frequency divider 54, and a setting device 55 to the control device 38 of the third embodiment. The synchronization signal generating circuit 53
9, a signal from the reverse rotation switch 40, the position memory switch 50, the position detector 7, the motor sensor 30, and the sewing machine control means 51 is inputted, and the frequency is divided by the value set by the setting device 55 via the frequency divider 54. And outputs a synchronization signal 56.

The operation of the fifth embodiment having the above configuration will be described below. The synchronizing signal generation circuit 53 in the fifth embodiment can calculate the signal of the motor sensor 30 based on the signal of the position detecting means 7 to know the angle 360 degrees of the main shaft 6 of the sewing machine. Further, while the sewing machine 1 is stopped, the synchronization signal generation circuit 53 stores a period from a stop position when the storage switch 50 is turned on to a stop position when the storage switch 50 is turned off as a synchronization signal on section. That is, while the memory switch 50 is on, the sewing machine pulley 2
Is turned by hand, or the on-range of the synchronizing signal is adjusted by the position adjustment operation by the forward rotation switch 39 or the reverse rotation switch 40, and when the storage switch 50 is turned off, the adjusted range is stored. Further, the synchronizing signal generating circuit 53 outputs a synchronizing signal 56 at each required timing of the operation of the sewing machine by the sewing machine control means 50. The frequency divider 54 outputs a pulse signal for each angle obtained by dividing the angle of the ON section by the synchronization signal generating circuit 53 by the value set by the setting unit 55.

In the fifth embodiment, the synchronizing signal generating circuit 53 outputs the synchronizing signal 56 divided by the frequency divider 54, but may output it without dividing. The setting device 55
May set the angle of the output pulse, and the frequency divider 54 may output a pulse signal having a constant angle from the on-angle to the off-angle from the synchronization signal generation circuit 53.

(Embodiment 6) The sixth embodiment describes an embodiment corresponding to claims 8 and 9 of the claims. Hereinafter, the configuration and operation of the fifth embodiment will be described. The sixth embodiment has the same configuration as the fifth embodiment, except for the operation of the synchronization signal generating circuit 53. First, when the needle bar top dead center is set to 0 degree, the sewing machine spindle 6
Alternatively, at the rotation position of the sewing machine pulley 2, an angle from about 180 degrees to 0 degrees is a section in which the needle bar of the sewing machine 1 rises, and an angle from 180 degrees to 0 degree is a section in which the needle bar descends. . Normally, when the sewing machine and the sewing machine driving device are controlled in an interlocked manner, synchronization is often performed at the timing when the needle of the sewing machine comes out on the cloth to be sewn or when the needle of the sewing machine pierces the cloth. The synchronizing signal generation circuit 53 in the sixth embodiment recognizes a section in which the needle bar of the sewing machine 1 rises as a synchronizing signal on range and a section in which the needle bar descends as a synchronizing signal off range. Here, the sewing machine pulley is turned by hand, or the forward rotation switch 3 is turned on as described in the third embodiment.
9 or reverse switch 40 to operate sewing pulley 2
Is turned to stop in the needle bar ascending range, and the position memory switch 50 is turned on, or the normal rotation switch 39 and the reverse rotation switch 40 are simultaneously turned on. Similarly, when adjusting the OFF timing, the needle is stopped in the needle bar descending range, and the position memory switch 50 is turned on, or the normal rotation switch 39 and the reverse rotation switch 40 are simultaneously turned on. With the above operation, the synchronization signal generating circuit 53 turns on the position memory switch 50 or the forward rotation switch 39 and the reverse rotation switch 4.
The angles at which 0s are simultaneously turned on are stored as the synchronization signal on angle and the off angle, respectively, and are output from the on angle to the off angle in accordance with the instruction of the sewing machine control means 51. In the sixth embodiment, the rising section is turned on, but the rising section may be turned off and the falling section may be turned on.
Further, a configuration in which the ON section and the OFF section can be separately set may be employed. Further, the needle up and needle down positions may be set as the ON position or the OFF position, and the other positions may be adjusted as the OFF position or the ON position.

(Embodiment 7) The seventh embodiment describes an embodiment corresponding to claim 10 of the claims. FIG. 10 is a block diagram of the seventh embodiment. Hereinafter, the configuration of the seventh embodiment will be described. The control device 57 of the seventh embodiment is different from the control device 5 of the fifth embodiment.
2 is obtained by adding a stop position detecting means 49 and a switch judging means 58 in the fourth embodiment.
Stop position detecting means 49 and synchronization signal generating circuit 53
Is input to The operation of the seventh embodiment having the above configuration will be described below. A characteristic component of the seventh embodiment is a switch determining means 58. The operation of the switch judging means 58 is such that when the forward rotation switch 39 or the reverse rotation switch 40 is individually operated, the operation is performed on the driving means 45 via the operation switching means 41, and the position adjustment described in the third embodiment is performed. Perform the operation. When the forward switch 39 and the reverse switch 40 are pressed at the same time, the angle is temporarily stored. When the forward switch 39 and the reverse switch 40 are simultaneously turned off, the temporarily stored angle is stored as the stop position. The determination as the needle up stop position and the needle down stop position is as described in the fourth embodiment.
Further, when the forward switch 39 and the reverse switch 40 are simultaneously turned on and the forward switch 39 is turned off first and the reverse switch 40 is turned off with a delay of one second or more, the synchronization signal generation circuit 53 changes the temporarily stored angle. When the reverse rotation switch 40 is turned off first and the normal rotation switch 39 is turned off with a delay of one second or more, the synchronization signal generation circuit 53 stores the temporarily stored angle as the synchronization signal off angle. .

In the fourth embodiment, the time difference between the forward rotation switch 39 and the reverse rotation switch 40 may be another value.

Although the on angle of the synchronizing signal is set when the forward rotation switch 39 is turned off first, it may be reversed. Further, the angles of the sewing machine axes in the fourth to seventh embodiments are determined by the position detector 7.
The signal from the motor sensor 30 was calculated on the basis of the signal of FIG. 4, but the arrangement of the sewing machine and the motor shown in FIG. 4 and the structure in which the motor is directly connected to the sewing machine shaft are based on the reference signal (Z signal) of the motor. Alternatively, the signal from the motor sensor 30 may be calculated. In the fourth to seventh embodiments, the angle of the sewing machine axis is calculated from the signal from the motor sensor 30 based on the signal of the position detector 7, but the position detector directly recognizes the angle of the sewing machine axis. May be output.

Further, in the fourth to seventh embodiments,
As the operation of storing the angle, the simultaneous ON, simultaneous OFF, or OFF with a time difference of the position storage switch, the forward rotation switch and the reverse rotation switch has been described, but other operations such as double pressing are also possible.

[0064]

As described above, claim 1 of the present invention is described below.
According to the first invention described above, the needle position can be arbitrarily adjusted without touching the rotating portion and the swinging portion of the sewing machine, and an advantageous effect that a sufficient safety structure can be realized can be obtained.

According to the second aspect of the present invention, when the protection mechanism such as the finger guard is removed, the operation is automatically switched to the position adjustment operation, and the rotation is performed only at a low speed. The effect that work can be performed safely is obtained.

According to the third aspect of the present invention, the structure is such that the motor is directly attached to the sewing machine head, so that the sewing machine can be turned down at a low speed while observing the sewing machine mechanism. The effect is obtained.

According to the fourth aspect of the present invention, since the position adjustment operation can be operated with a fingertip using a switch or the like, the position adjustment operation can be performed more precisely and the rotation unit and the swing unit can be operated more precisely. The advantageous effect that the needle position can be arbitrarily adjusted without touching is obtained.

According to the fifth aspect of the present invention, it is possible to switch between the needle upper stop position and the needle lower stop position without touching the structure of the position detector. In addition, there is an effect that the stop position can be stored.

According to the sixth aspect of the present invention, the rotating body such as the sewing machine pulley and the structure of the position detector are not touched by hand, and the needle upper stop position and the needle lower stop are not touched. There is an effect that it is possible to store the actual stop position while checking the actual stop position without switching the position.

According to the seventh aspect of the present invention, it is possible to store the generation timing of the synchronizing signal for the thread trimming and the cloth feeder without touching the structure of the position detector. This has the effect.

According to the eighth aspect of the present invention, the rotating body such as the sewing machine pulley and the structure of the position detector are not touched, and the signal on timing and the signal off timing are not changed. There is an effect that the data can be stored while checking the actual on / off position without switching.

According to the ninth aspect of the present invention, the rotating body such as the sewing machine pulley and the structure of the position detector are not touched, and the needle upper stop position and the needle lower stop position are not touched. In addition, there is an effect that the data can be stored while checking the actual stop position and the on / off position without switching the signal on timing and the signal off timing.

The tenth aspect of the present invention is the tenth aspect of the present invention.
According to the invention, since the synchronization signal can be divided into smaller pulses and output, the pulse motor between the timings of the synchronization signal output can be driven by the number of pulses.

[Brief description of the drawings]

FIG. 1 is a block diagram according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a general arrangement of a sewing machine and a sewing machine driving device;

FIG. 3 is a block diagram according to a second embodiment of the present invention.

FIG. 4 is a diagram showing an example of attachment of the sewing machine, the motor, and the tilt sensor according to the present invention.

FIG. 5 is a block diagram according to a third embodiment of the present invention.

FIG. 6 is a time chart of an operation sequence in FIG. 5;

FIG. 7 is a block diagram according to a fourth embodiment of the present invention.

8 is a diagram showing a sewing machine pulley angle at which a stop position detecting unit recognizes a stop position range in FIG. 7;

FIG. 9 is a block diagram according to a fifth embodiment of the present invention.

FIG. 10 is a block diagram according to a sixth embodiment of the present invention.

FIG. 11 is a diagram showing a structure of a conventional detector for detecting an angle of a sewing machine axis.

FIG. 12 is a diagram illustrating an example of a sewing machine in which a worker cannot reach the sewing machine pulley.

FIG. 13 is a diagram illustrating a configuration of a cover of a rotating unit of the sewing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sewing machine 2 Sewing machine pulley 3 Belt 5 Motor 7 Position detector 8, 25, 31, 38, 48, 52, 57 Control device 23 Finger guard 24 Inclination sensor 26, 32, 42 Control means 27, 45 Driving means 28, 33, 41 Operation switching means 29 Switch 30 Motor sensor 34 Guard sensor 39 Forward rotation switch 40 Reverse rotation switch 43 Buzzer 44 Operation sequence 46 Current limiting circuit 47 Speed limiting circuit 49 Stop position detecting means 53 Synchronous signal generating circuit 54 Frequency dividing circuit 58 Switch determining means

Claims (25)

[Claims] A motor for driving a sewing machine; a driving means for driving the motor; a control means for controlling the operation of the sewing machine and a rotation of the motor for controlling the operation of the motor; and a first operation means; The operation means outputs a pedal depression signal and an operation command of a pedal depression signal to the control means, and the control means switches the operation switching means to a position adjustment operation, and the pedal depression signal is input. A sewing machine drive device configured to instruct the drive unit to perform a position adjustment operation of driving the sewing machine at a low speed in a forward direction while the sewing machine is driven in a reverse direction while the pedal depression signal is being input. . 2. A sewing machine comprising: a motor for driving a sewing machine; driving means for driving the motor; control means including operation switching means for controlling operation of the sewing machine and rotation of the motor; and first operating means, wherein the sewing machine is provided with: A protection mechanism for covering the rotating part and the oscillating part, the protection mechanism having first detection means for generating a signal when the protection means is not at a predetermined position, and the first operation means providing a pedal depression signal to the control means; The operation switching means outputs an operation command of a pedal depressing signal, and the operation switching means operates the sewing machine according to the operation command from the first operation means, and when the signal from the first detection means is issued, When a command to stop the motor is issued to the drive unit, and when a signal from the first detection unit is issued while the sewing machine is stopped, the operation switching unit is switched to a position adjustment operation, and the pedal is operated. The driving means performs a position adjustment operation of driving the sewing machine at a low speed in a forward direction while the insertion signal is being input, and performing a low-speed operation of the sewing machine at a low speed in the reverse direction while the pedal depression signal is being input. Sewing machine drive device with a command to the machine. 3. A sewing machine comprising: a motor for driving a sewing machine; driving means for driving the motor; control means including operation switching means for controlling the operation of the sewing machine and rotation of the motor; and first operating means, wherein the sewing machine is provided. A tilt detection unit that emits a signal when the sewing machine is tilted by a certain angle or more, the motor is directly attached to the sewing machine, and the first operation unit sends a pedal depression signal to the control unit. The operation switching means outputs the operation command of the pedal depressing signal, and the operation switching means operates the sewing machine according to the operation command from the first operation means. When a signal from the tilt detecting means is issued while the sewing machine is stopped, the operation switching means switches to the position adjusting operation. The position adjusting operation is performed such that the sewing machine is driven at a low speed in the forward rotation while the pedal depression signal is input, and the sewing machine is driven at a low speed in the reverse rotation while the pedal return signal is input. A sewing machine driving device configured to instruct the driving means. 4. A motor for driving the sewing machine, driving means for driving the motor, control means including operation switching means for controlling the operation of the sewing machine and rotation of the motor, and second and third control means.
Operation switching means, wherein the operation switching means causes the driving means to rotate the motor in the forward direction at a low speed only when the second operation means is operating, and the driving means only when the third operating means is operating. A sewing machine drive device for instructing a means to perform a position adjusting operation of rotating the motor in a reverse direction at a low speed. 5. A motor for driving the sewing machine, driving means for driving the motor, control means for controlling the operation of the sewing machine and rotation of the motor and including operation switching means, fourth operating means and stop position detecting means. The sewing machine includes second detection means for detecting a rotation angle of the sewing machine shaft, and the stop position detection means uses the second detection means to set a considerably wide angle on the needle top dead center side of the sewing machine to a needle position, Then, a considerably wide angle on the needle bottom dead center side is recognized as the needle lower position, and if the position where the fourth operation means is operated is within the needle lower position range, the position is set to the needle lower stop position, the needle upper position range. A sewing machine drive device configured to store the position as a needle stop position if the position is within the range, and use the stored position as a stop position of the sewing machine operation by the control means. 6. A motor for driving the sewing machine, driving means for driving the motor, control means including operation switching means for controlling the operation of the sewing machine and the rotation of the motor, and second and third motors.
Operating means and stop position detecting means, the sewing machine includes second detecting means for detecting the rotation angle of the sewing machine shaft, and the stop position detecting means detects the needle top dead center side of the sewing machine by the second detecting means. Recognizing a fairly wide angle as the needle-up position and a fairly wide angle on the needle bottom dead center side as the needle-down position, the operation switching means transmits the motor to the drive means at a low speed while the second operating means is operating. And instructs the drive means to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed while the third operation means is operating, and the stop position detection means If the position where the second and third operating means are simultaneously operated is within the needle down position range, the position is stored as the needle down stop position, and if it is within the needle up position range, the position is stored as the needle up stop position, Stop position of the sewing machine operation by the control means Sewing machine drive apparatus having a configuration that. 7. A sewing machine comprising: a motor for driving a sewing machine; driving means for driving the motor; control means for controlling operation of the sewing machine and rotation of the motor; fourth operating means; and synchronization signal output means. Is provided with second detection means for detecting the rotation angle of the sewing machine shaft. The synchronization signal output means recognizes the angle of the sewing machine shaft by the second detection means, and determines the range in which the fourth operation means is operated. A sewing machine driving device configured to store as a synchronization signal output angle and to output a synchronization signal only in the range of the stored angle in accordance with an instruction from the control unit. 8. A motor for driving the sewing machine, driving means for driving the motor, control means for controlling operation of the sewing machine and rotation of the motor and including operation switching means, second and third motors.
The sewing machine further includes second detection means for detecting a rotation angle of a sewing machine shaft, and the operation switching means includes a second detection means for detecting the rotation angle of the sewing machine shaft while the second operation means is operating. The motor is rotated in the forward direction at a low speed, and while the third operation means is operating, the drive means is instructed to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed, and the synchronization signal output is performed. The means recognizes, by the second detection means, a specific angle range of the sewing machine axis as an ON section and another angle range as an OFF section, and sets a position where the second and third operation means are simultaneously operated in an ON section. If so, the position is stored as an on angle, and if it is in an off section, the position is stored as an off angle, and a signal is output in a range from an on angle to an off angle in synchronization with the rotation of the sewing machine in accordance with an instruction from the control means. Sewing machine Operated device. 9. The sewing machine according to claim 8, wherein the synchronization signal output means recognizes a synchronization signal on or off section when the needle bar of the sewing machine is rising and a synchronization signal off or on section when the needle bar is falling. Drive. 10. A motor for driving the sewing machine, driving means for driving the motor, control means for controlling operation of the sewing machine and rotation of the motor and including operation switching means, second and third operating means, and a stop position. The sewing machine comprises a detecting means and a synchronizing signal output means.
Wherein the operation switching means causes the driving means to rotate the motor in a forward direction at a low speed while the second operating means is operating, and the driving means while the third operating means is operating. Command to perform a position adjustment operation of rotating the motor in the reverse direction at a low speed, the stop position detection means,
The second detecting means recognizes a fairly wide angle on the needle top dead center side of the sewing machine as a needle up position and a fairly wide angle on the needle bottom dead center side as a needle down position, and performs the second and third operations. If the position where the means is simultaneously operated is within the needle down position range, the position is stored as the needle down stop position, and if the position is within the needle up position range, the position is stored as the needle up stop position, and the control means controls the sewing machine operation. A stop position, wherein the synchronization signal output means comprises:
When the second detecting means recognizes the angle of the sewing machine axis and simultaneously operates the second and third operating means, and then returns the second operating means, the position is turned on or off. When the third operation means is returned earlier, the position is stored as an off angle or an on angle, and a range of an on angle to an off angle is synchronized with the rotation of the sewing machine in accordance with an instruction of the control means. A sewing machine drive device that outputs a signal with a. 11. The control device according to claim 1, wherein said control means includes an alarm means, and is switched to a position adjusting operation. When the position adjusting operation is performed, said alarm means is activated.
The sewing machine driving device according to any one of 5, 6, 8, and 10. 12. The control means includes an alarm means and a delay means. The control means is switched to a position adjusting operation. When the position adjusting operation is performed, the alarm means is activated by a drive command of the first, second or third operating means. The sewing machine driving device according to any one of claims 1, 2, 3, 4, 5, 6, 8, and 10, wherein the position adjusting operation is performed with a predetermined time delay by the delay means. 13. The control means includes a sequence means, wherein the sequence means enables the motor drive of the position adjustment operation by one drive command for a predetermined time. Any one of 4, 5, 6, 8, 10
A sewing machine driving device according to the above item. 14. The control device according to claim 1, wherein the control device includes a sequence device, and the sequence device enables a motor drive of a position adjustment operation by one drive command only during a predetermined rotation angle. The sewing machine driving device according to any one of 3, 4, 5, 6, 8, and 10. 15. The control device according to claim 1, wherein the control device includes a sequence device, and the sequence device repeats stopping the driving of the motor by the position adjustment operation at a predetermined interval. Any one of 5, 6, 8, and 10
A sewing machine driving device according to the above item. 16. The control means includes a sequence means, wherein the sequence means repeats motor driving by a position adjusting operation at a predetermined interval for a constant rotation angle. The sewing machine driving device according to any one of claims 6, 6, 8, and 10. 17. The apparatus according to claim 1, wherein the driving means locks the motor while the motor is stopped by the position adjustment operation. Sewing machine drive. 18. A driving device comprising a current limiting device, wherein the current limiting device limits the current to the motor when the operation switching device switches to the position adjusting operation. The sewing machine driving device according to any one of claims 5, 6, 8, and 10. 19. A drive system comprising a speed limiter, wherein the speed limiter limits the rotational speed of the motor when the operation switcher switches to a position adjusting operation. Any one of 5, 6, 8, 10
A sewing machine driving device according to the above item. 20. A control means comprising a timer means, and when the operation is switched to the position adjustment operation by the operation of the second and third operation means, the timer is maintained even after the operation of the second and third operation means is completed. The structure according to claim 4, wherein the position adjusting operation is continued for a predetermined time by the means, and the normal sewing operation is prohibited.
The sewing machine driving device according to any one of claims 6, 8, and 10. 21. A motor for driving a sewing machine, a driving means for driving the motor, a control means for controlling the operation of the sewing machine and the rotation of the motor, a synchronizing signal output means, and a frequency dividing means. A second detecting means for detecting an angle; the synchronizing signal output means recognizing an angle of the sewing machine by the second detecting means, storing a predetermined angle range, and permitting according to an instruction of the control means; During this time, the signal is output only in the range of the stored angle in synchronization with the rotation of the sewing machine, and the frequency dividing means outputs the signal of the stored angle in the range of the output by the synchronization signal output means. A sewing machine driving device configured to output a signal divided for each angle divided by a predetermined value in synchronization with rotation of the sewing machine. 22. The sewing machine driving apparatus according to claim 21, wherein the frequency dividing means includes a first setting means, and the first setting means sets a division number for dividing the signal output range. 23. A frequency dividing means for synchronizing with a rotation of a sewing machine a signal obtained by dividing a stored angle range by a predetermined angle in an output range of a synchronization signal output means. The sewing machine driving device according to claim 21. 24. A frequency dividing means comprising a second setting means, wherein a signal obtained by dividing a range of stored angles by an angle set by said second setting means within an output range of a synchronizing signal output means. 22. The sewing machine driving device according to claim 21, wherein the drive is output in synchronization with the rotation of the sewing machine. 25. A motor comprising a third detecting means for outputting a plurality of signals during one rotation of the motor, wherein the second detecting means detects a specific rotation position of the sewing machine shaft and a stop position detecting means or a synchronous position detecting means. The signal output means counts the signal from the third detection means based on the signal from the second detection means to know the angle of the sewing machine axis.
The sewing machine driving device according to any one of claims 1 to 6.