JPH06292785A - Sewing machine having automatic operation function of controller - Google Patents

Abstract

PURPOSE:To make it possible to attain efficiency and safety of the operation of a sewing machine by controlling a controller for controlling the speed especially during the operation of the controller. CONSTITUTION:A sewing machine frame 1 is provided with a controller 5 for converting the control input to an electric signal, a sewing machine motor 4, the speed of which is controlled by the controller 5 and driven, and automatic operation command means 11 for automatically operating the sewing machine motor 4 at an arbitrary speed, a starting operation means 12 for starting the automatic operation, a release means 14 for releating the automatic operation of the sewing machine motor 4 to be operated normally, a central processing unit 2 for controlling these means, and a memory card loading part. A memory card 9 including a speed storage means 10 for automatically operating the sewing machine motor 4 at an arbitrary speed is provided to be capable of being installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine controller and, more particularly, to a sewing machine having an automatic operation function of the controller which controls the speed during operation of the controller to provide efficiency and safety.

[0002]

2. Description of the Related Art Conventionally, speed control in a motor-driven sewing machine is of a type in which a specified speed is set to drive and stop, and a type in which a sewing machine motor speed is accelerated and decelerated by a foot operation called a foot type controller. Things exist.

Generally, in sewing a sewn product, not a straight line is sewn, but a curved portion or a short portion is often sewn, so that a manual operation is often required.

In this respect, in the sewing work by the controller in the stepping operation, the hands can be released and the sewing operation can be performed by both hands, and the speed can be freely changed even in a fine portion such as a complicated portion, and the sewing portion can be changed. It was adjusted by adjusting the footsteps at the optimum speed. This enabled excellent sewing work.

[0005]

The operation by the controller capable of performing such excellent sewing work also depends on the sewn product, such as a curtain or a table center, which is sewn over a relatively long distance. You have to keep stepping on. In this respect, the type in which the designated speed is determined and the hands and fingers are turned on / off is advantageous. In recent years, sewing machines that sew with a sewing machine in the automatic embroidery mode have become widespread, but these have a relatively large number of stitches, and it takes a few minutes to a dozen minutes to complete a pattern. I had to operate. Thus, when sewing at a substantially the same speed for a long time, such as when a straight line portion continues, it is necessary to continue stepping on the controller.

Further, there is a demand to operate the controller immediately again in order to sew a short portion following that distance even when sewing a long distance.

[0007]

Therefore, the inventors of the present invention have made extensive studies to solve the above-mentioned problems, and as a result, as a result of the invention, a controller for converting an operation amount into an electric signal and a speed control by the controller are provided. A sewing machine motor that is driven by
An automatic operation command means for automatically operating the sewing machine motor at an arbitrary speed, a start operation means for starting the automatic operation, and a release means for canceling the automatic operation of the sewing machine motor to normal operation. A controller provided with a central processing unit for controlling these and a memory card mounting portion in a sewing machine frame, and a memory card equipped with a speed storage means for automatically operating the sewing machine motor at an arbitrary speed By using the sewing machine or the like having the automatic driving function, the speed is controlled during the operation of the controller, the efficiency and the safety are provided, and the above problems are solved.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 3 is a schematic view of the present invention. The sewing machine has a computer program pre-installed therein and is configured to be able to perform various kinds of embroidery sewing by a control device including a central processing unit (CPU) 2. Includes possible embroidery sewing machines.

The sewing machine frame 1 is provided with pattern selection means 3 having a pattern selection key 3a for selecting various built-in patterns. A sewing machine motor 4 as a known drive motor is built in the sewing machine frame 1.

The controller 5 is constructed as a foot-operated type for controlling the speed of the sewing machine motor 4. The controller 5 includes a conversion means 5 for converting an operation amount into an electric signal.
a is built in.

The drive circuit 6 is configured to drive the sewing machine motor 4 based on the speed control signal of the controller 5.

The speed detecting means 7 is configured to detect the speed (rotation speed) of the sewing machine motor 4 or a current value (current amount) corresponding to the speed, and is connected to the central processing unit (CPU) 2. There is.

The memory card mounting portion 8 is provided at an appropriate position on the front surface of the machine frame 1 of the sewing machine, and a memory card (RAM) is provided.
9 is mountable.

Speed storage means 10 (means for storing the number of revolutions or a current amount)
Is a means for storing the automatic operation speed immediately after the automatic operation is started, and is incorporated in the sewing machine frame 1 for automatically operating the sewing machine motor 4 at an arbitrary speed.

The automatic operation command means 11 is for commanding a speed that is automatically operated and stored, and is connected to the central processing unit (CPU) 2.

The automatic driving speed detected by the speed detecting means 7 during the automatic driving is compared with the stored speed stored in the speed storing means 10 during the automatic driving,
Only when the two have the same speed, the automatic operation command means 11 makes a determination so that the automatic operation is continued. That is, the automatic operation speed is configured to match the storage speed. This is for holding the stored automatic operation speed even if the automatic operation speed changes for some reason, and a feedback circuit is configured.

The automatic operation is self-maintained by the speed detecting means 7, the speed storing means 10 and the automatic operation commanding means 11 which operate in this way. With this configuration, the automatic operation speed can be made accurate and safe.

In some cases, the automatic operation speed stored in the speed storage means 10 may be held as a constant output in the automatic operation command means 11 immediately after the automatic operation is started. In some cases, the storage unit 10 and the automatic operation command unit 11 may self-maintain the automatic operation.

The starting operation means 12 is for starting the sewing machine motor 4 in order to automatically operate the sewing machine motor 4 at an arbitrary predetermined speed. The starting operation means 12 is an appropriate portion of the sewing machine frame 1 (for example, the jaw portion of the sewing machine frame 1). 1a location). In this case, there is an advantage that the operation can be visually and surely performed.

The canceling means 13 is means for canceling the automatic operation of the sewing machine motor 4 and changing it to a normal operation. The canceling means 13 is an appropriate portion of the sewing machine frame 1 (for example, the jaw portion 1a of the sewing machine frame 1 or the like). ) Is provided. In the embodiment, the starting operation means 12 and the releasing means 13 are composed of the same member. In the embodiment shown in FIG. 3, the starting operation means 12 and the releasing means 13 are made of the same member. It has the advantage of being extremely easy to operate.

In the embodiment shown in FIG. 4, the jaw 1a is provided with the starting operation means 12 and the releasing means 13 separately and independently. Even in this case, it is easy to operate.

In case of emergency stop, the machine frame 1
It is operated by the stop switch 14 provided at the jaw 1a.

Next, its operation will be described with reference to the flow chart shown in FIG.
The sewing machine operation is turned on (see S1), the memory card 9 is mounted in the memory card mounting portion 8 of the sewing machine frame 1, the controller 5 is operated (see S2), and the sewing machine motor 4 is driven (see S3). . Then, it is examined whether or not the automatic operation is performed, and when it is desired to perform the automatic operation, the starting operation means 12 is operated to automatically operate the sewing machine motor 4 at an arbitrary predetermined speed (see S4). As a result, normal sewing or embroidery sewing can be automatically performed at a predetermined speed. That is, so-called automatic cruise operation can be performed.

At this time, the speed (rotation speed) of the sewing machine motor 4 during the automatic operation or the current value (current amount) corresponding to the speed is stored (see S5). Further, the speed (rotation speed) of the sewing machine motor 4 or the current value (current amount) corresponding to the speed is detected (see S6), and if the operating speed is the same as the stored speed, automatic operation is continued. (See S7).
That is, the feedback is made so that the operating speed matches the stored speed.

Next, it is examined whether or not to cancel the automatic operation (see S8), and if the automatic operation is desired to be canceled,
The canceling means 13 is operated to cancel the automatic operation of the sewing machine motor 4, and the normal operation is changed (see S9). Then, it is examined whether or not the operation is ended (see S10), and when the operation is desired to be ended, the operation is ended.

The sewing work is completed by repeating some or all of these operations. Of course, there are cases where automatic driving is not performed.

[0027]

According to the present invention, firstly, extremely efficient sewing work can be performed in the case of sewing at the same speed for a long time and various cases. Secondly, the start of automatic operation can be performed by the sewing machine frame. It is performed in one place, and it is possible to safely and surely start and release it while observing it visually, and thirdly, it is possible to provide it easily and inexpensively to computer sewing machines currently on the market.

To explain these effects in detail, in recent years, sewing machines that perform embroidery sewing with a sewing machine in an automatic embroidery mode have become widespread, but these have a relatively large number of stitches. In some cases, the controller had to be stepped on for a few minutes to a dozen minutes, or when a straight line portion continued, sewing was performed at a substantially same speed for a long time.However, in the present invention, the automatic operation is started. Since the starting operation means 10 is provided, it is possible to perform a sewing operation as an automatic operation at a constant operation speed without operating with a hand or a foot, and it is necessary to continue stepping on the controller as in the conventional case. Can be eliminated and extremely efficient sewing work can be performed. As a result, there is also an advantage that the fatigue level of the operator can be minimized.

Depending on the sewing, there is a case where even if the sewing is performed for a long distance as described above, the controller 5 may be automatically operated or a manual work may be performed immediately to sew a short portion following the distance. In the present invention, when it is desired to make the operation manual after the automatic operation is performed by the starting operation means 12, the automatic operation of the sewing machine motor 4 is canceled so that the normal operation is performed. Can be released and the short part can be sewn, and if it is long, the automatic operation can be performed again. Even in such a case, an extremely efficient sewing operation can be performed.

Further, the starting operation means 12 for starting the automatic operation and the releasing means 13 for canceling the automatic operation of the sewing machine motor 4 to make it the normal operation are respectively provided for the sewing machine frame 1.
In particular, both the start and the release are manually performed, and the controller 5 is operated by the foot. Thereby, there is an advantage that the starting and releasing can be operated safely and surely while visually observing.

Further, in the present invention, the sewing machine frame 1 is provided with the memory card mounting portion 8, and the memory card mounting portion 8 is provided with the speed storing means 10 for automatically operating the sewing machine motor 4 at an arbitrary speed. Since a memory card (RAM) 9 is provided so that it can be mounted, a part of it can be easily attached to a currently commercially available computer sewing machine without installing the entire computer control device, and it is inexpensive. There are advantages that can be provided to.

Next, if the jaw 1a is provided with the starting operation means 12 and the releasing means 13, the operation can be made extremely easy, and if the starting operation means 12 and the releasing means 13 are the same switch, the structure is further improved. It has the advantage of being simple and easy to operate.

[0033]

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is a flowchart of the present invention.

FIG. 3 is a schematic diagram of the present invention.

FIG. 4 is a schematic diagram of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sewing machine frame 1a ... Jaw 2 ... Central processing unit 4 ... Sewing machine motor 5 ... Controller 5a ... Conversion means 6 ... Drive circuit 7 ... Speed detection means 8 ... Memory card mounting part 9 ... Memory card 10 ... Speed storage means 11 ... Automatic driving command means 12 ... Starting operation means 13 ... Releasing means

Claims (6)

[Claims] 1. A controller that converts an operation amount into an electric signal, a sewing machine motor that is driven by controlling the speed of the controller, an automatic operation command means for automatically operating the sewing machine motor at an arbitrary speed, and an automatic operation. A sewing machine frame is provided with a starting operation means for starting the operation, a release means for canceling the automatic operation of the sewing machine motor to normal operation, a central processing unit for controlling these, and a memory card mounting portion. A sewing machine having an automatic operation function of a controller, wherein a memory card having a speed storage means for automatically operating the sewing machine motor at an arbitrary speed is attachable. 2. A controller having conversion means for converting an operation amount into an electric signal, a drive circuit driven by the electric signal of the controller, a sewing machine motor driven based on the drive circuit, and a speed of the sewing machine motor. , A speed detection means for detecting, an automatic operation command means for automatically operating the sewing machine motor at an arbitrary speed, a start operation means for starting the automatic operation, and a normal operation for canceling the automatic operation of the sewing machine motor. A memory card provided with a release means for operating, a central processing unit for controlling these, and a memory card mounting portion in a machine frame, and a speed memory means for automatically operating the sewing machine motor at an arbitrary speed. A sewing machine equipped with an automatic operation function of a controller, which can be installed. 3. The sewing machine having the automatic operation function of the controller according to claim 1, wherein the starting operation means and the releasing means are independently provided on the jaw portion of the machine frame of the sewing machine. 4. The sewing machine having the automatic operation function of the controller according to claim 1, wherein the starting operation means and the releasing means are provided as a same switch on a jaw portion of a sewing machine frame. 5. A sewing machine having an automatic operation function of a controller according to claim 2, wherein the starting operation means and the releasing means are independently provided on the jaw of the machine frame of the sewing machine. 6. The sewing machine having an automatic operation function of a controller according to claim 2, wherein the starting operation means and the releasing means are provided as a same switch on a jaw portion of a sewing machine frame.