JP3171392B2 - Electric sewing machine with embroidery device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric sewing machine with an embroidery device having an embroidery frame detachably mounted on an electric sewing machine main body. 2. Description of the Related Art A conventional embroidery-capable electric sewing machine is disclosed, for example, in Japanese Utility Model Publication No. 62-21268. [0003] This is an embroidery frame and an embroidery for moving the embroidery frame to an electric sewing machine main body capable of performing normal sewing (linear sewing, zigzag sewing, buttonhole sewing, etc., without using an embroidery frame). An embroidery device having a frame driving motor is detachable as an attachment. When performing normal sewing, the embroidery device is removed, only the electric sewing machine body is used, the cloth is placed on the sewing machine bed, and the sewing needle is fed while the cloth is fed by driving the feed dog. Straight and zigzag stitches are performed by moving up and down. When performing embroidery stitching, the embroidery device is mounted on the electric sewing machine main body, the embroidery frame is arranged below the sewing needle of the electric sewing machine main body, and the embroidery frame is moved in the orthogonal coordinates while the embroidery frame is being moved. , The embroidery pattern is sewn on the cloth mounted on the embroidery frame. [0006] Similarly, an embroidery device detachably mounted on an electric sewing machine main body is disclosed in Japanese Patent Application Laid-Open No. 55-52790. As described above, the reason why the embroidery device can be attached to and detached from the electric sewing machine main body is that when the embroidery device is mounted on a sewing machine table as shown in Japanese Patent Application Laid-Open No. 55-6528, Because of its large size, it is unsuitable as a household sewing machine.
As shown in the official gazette, if a sewing machine exclusively for embroidery sewing is used, for home use, normal sewing is often performed.
It is necessary to own two sewing machines in addition to a sewing machine that can sew normally, which is not suitable for ordinary households. In this regard, if the embroidery device is made detachable, the electric sewing machine main body can be reduced in size and embroidery sewing can be performed as needed, which is extremely useful as a household sewing machine. However, in the above-mentioned conventional example, the embroidery device transmits the embroidery pattern data and the driving timing signal of the sewing needle to the control device in the electric sewing machine main body or the electric sewing machine main body. Although a connector for inputting from a fixed dedicated control box is provided, the electric power of the motor for driving the embroidery frame is supplied separately from the electric sewing machine main body. That is, a dedicated power supply circuit is provided in the embroidery device, or a dedicated power supply circuit is provided in the dedicated control box. For this reason, when performing embroidery sewing, it is necessary to insert two power cords, a power cord on the electric sewing machine main body side and a power cord on the embroidery apparatus side, into an outlet, which is inconvenient as a household sewing machine. Was something. The power supply circuit on the side of the embroidery device has a relatively large capacity for the embroidery frame driving motor, so that the power supply circuit is large, and the size of the embroidery device and the dedicated control box is increased. This is contrary to the demand for compact sewing machines. Moreover, since the power transformer and the like are relatively heavy, the weight of the entire sewing machine also increases. According to another aspect of the present invention, there is provided an electric sewing machine with an embroidery device, comprising an embroidery frame and a motor for driving the embroidery frame. In the electric sewing machine with an embroidery device that can be attached to and detached from the electric sewing machine main body, the embroidery device and the electric sewing machine main body are provided with a connector for electrically connecting the two when the embroidery device is mounted. , a power supply line for supplying power from the power supply circuit of at least an electric sewing machine body to the embroidery unit, motor of the embroidery frame drive is constituted by the power supply line to receive power supply, and, In addition to the power supply circuit, a main motor and its
Drive power to the main motor and the motor for driving the embroidery frame.
Drive circuit for supplying power, their main motor and drive circuit
A control circuit for controlling the operation of the road;
Further provided with a pattern selecting means, and a mode switching means for automatically switching the operation of the control circuit to a control mode of the embroidery sewing in connection with the mounting of the embroidery device, and in the control mode of the embroidery sewing, The embroidery pattern can be selected by the pattern selecting means. According to the present invention, the embroidery apparatus detachably attached to the electric sewing machine main body receives power from a power supply circuit in the electric sewing machine main body via a connector, so that the embroidery apparatus has a power supply circuit therein. The embroidery device can be made compact and lightweight without the embroidery device. Also, the operation of the control circuit can be automatically switched to the embroidery sewing control mode in connection with the mounting of the embroidery device by the mode switching means. Embroidery patterns can be selected. Further, since only one power cord is required, there is no need to insert two power cords into an outlet as in the conventional example, and it is easy to handle for a household sewing machine in which the power cord is connected and disconnected each time it is used. Is significantly improved. Furthermore, a power supply circuit, a main
Motor, drive circuit, and control circuit
It is easy to assemble the thin. Moreover, the drive from the power supply circuit
The wiring to the drive circuit can be shortened, and the sewing machine can be operated at a stable voltage.
Can be driven. If an embroidery frame drive mode is
If a drive circuit that supplies drive power to the
Since the distance from the power circuit of the body to the drive circuit becomes longer,
To stabilize the voltage, electrolytic capacitors are connected to the power supply in the embroidery device.
Sensor is required. According to a second aspect of the present invention, in the electric sewing machine with the embroidery device according to the first aspect, a display is provided on the electric sewing machine main body, and a pattern selecting operation of the pattern selecting means is performed. It is characterized in that the display is made in connection with the. According to the above configuration, a display relating to the pattern selection operation of the electric sewing machine main body is output to the display in accordance with the control mode of the control circuit which is switched according to the attachment / detachment of the embroidery device. It is easy and the operability is extremely improved. FIG. 1 is a perspective view of an electric sewing machine with an embroidery device according to an embodiment of the present invention. The electric sewing machine main body 1 is an electric sewing machine capable of normal sewing, and an embroidery device 30 is detachably attached to the back of the sewing machine bed 1a using an attachment. On the front panel of the electric sewing machine main body 1, there are provided an operation panel 12 on which a selection switch for a zigzag sewing pattern and an embroidery pattern are arranged, and a pattern display 13 for displaying a graphic of the selected pattern. In addition, the electric sewing machine main body 1
A control circuit using a motor and a computer for driving a sewing needle, driving a feed dog, and swinging a sewing needle, a power supply circuit, and the like are provided therein. When the embroidery device 30 is mounted on the electric sewing machine main body 1, the embroidery frame 4 located on the sewing machine bed 1a is provided.
0 and an X pulse motor 31 and a Y pulse motor 32 for moving the embroidery frame 40 in the XY orthogonal coordinates. The X pulse motor 31 moves the embroidery frame 40 in the X axis direction, and the Y pulse motor 32 moves the embroidery frame 40 in the Y axis direction. The embroidery device 30 of the electric sewing machine body 1
The connector 20 is provided on the side surface facing the
On the other hand, the embroidery device 30 is provided with a connector 38 that can be connected to the connector 20 of the electric sewing machine main body 1. FIG. 2 is a block diagram showing an electric configuration of the electric sewing machine main body 1 and the embroidery device 30 of this embodiment.
The electric sewing machine main body 1 of the present embodiment is a computer sewing machine that performs operation control using the CPU 3. The Z pulse motor 10 is a motor for swinging the sewing needle 1b for performing zigzag sewing, and is driven by supplying a pulse current from the drive circuit 8. The rotational force of the Z pulse motor 10 drives a sewing needle swinging mechanism (not shown) via a predetermined link. The F pulse motor 11 has a feed dog (not shown).
The driving motor is driven by supplying a pulse current from the driving circuit 9. The rotational force of the F-pulse motor 11 drives a feed dog driving mechanism (not shown) via a predetermined link. A control signal is supplied from the CPU 3 to the drive circuits 8 and 9 to control the pulse current output. The main motor 7 is an AC or DC motor for moving the sewing needle 1b up and down, is driven by a drive current from a motor drive circuit 6, and is driven by a drive current from the CPU 3 in accordance with the operation of the start / stop switch 5. , Start / stop and rotation speed adjustment. In addition to the above, the CPU 3 includes a pattern selection switch 12a arranged on the operation panel 12, the pattern display 13, a timing sensor 4 for detecting the timing of the vertical movement of the sewing needle 1b, a RAM 14, , ROM15
And the mode changeover switch 65 and the X in the embroidery device 30.
The drive circuits 33 and 34 of the pulse motor 31 and the Y pulse motor 32 are connected. A power supply circuit 2 is built in the electric sewing machine body 1, and the power supply circuit 2
Supply power for operation to circuit components such as the motor, and drive motors 6, 8, 9, 33, 34, and motors 7, 10,.
Driving power is supplied to 11, 31, and 32. The embroidery device 30 includes the X pulse motor 31
, The Y pulse motor 32, the embroidery frame 40 and its driving mechanism (not shown), an X origin detector 55 and a Y origin detector 56 for detecting that the embroidery frame 40 is at the origin on the XY coordinates.
It has. The X origin detector 55 and the Y origin detector 56
Is a limit switch that is turned on when the embroidery frame 40 reaches the origin position. Then, the electric sewing machine main body 1 and the embroidery device 30
The connectors 20 and 38 provided in the drive circuit 3
Power supply lines 61a, 61b, 62a, 62b for supplying a drive current from the power supply circuit 2 to the X pulse motor 31 and the Y pulse motor 32 via the power supply circuits 3 and 34; the X origin detector 55 and the Y origin detector 56; Detection signal of CPU
3, detection signal lines 63a, 63b, 6
4a and 64b. Next, the operation of this embodiment will be described. When performing normal sewing, the connector 2
The embroidery device 30 is detached from the electric sewing machine main body 1 by removing 0 and 38. Then, the mode changeover switch 65 is turned off. In this state, the input port Ps of the CPU 3
Becomes a high level, and in this case, the CPU 3 enters the control mode of the normal sewing. That is, the main motor 7 is driven in accordance with the operation of the start / stop switch 5 to move the sewing needle 1b up and down, and, based on the output of the timing sensor 4, to synchronize with the timing of the vertical movement of the sewing needle 1b. And F pulse motor 11
Is driven to swing the sewing needle 1b and feed the cloth (in the case of linear sewing, only the F pulse motor 11 is driven to feed the cloth only). Next, when performing embroidery sewing, the embroidery device 30 is mounted on the electric sewing machine main body 1 and the connectors 20 and 3 are connected.
8 are joined. Then, the mode switch 65 is turned on. As a result, the input port Ps of the CPU 3 is changed to the low level, and the mode is switched to the control mode of the embroidery sewing. That is, in the case of embroidery sewing, the embroidery frame 4
Since the embroidery pattern is sewn by moving the sewing needle 1b, it is not necessary to swing the sewing needle 1b or feed the cloth.
And the F-pulse motor 11 is controlled to be set at a predetermined stop position and held at that position. The drive current is supplied to the main motor 7 as in the case of the normal sewing. The CPU 3 operates the pattern selection switch 12
The embroidery pattern selected in step a (the pattern pattern is stored in the ROM 14 in advance) is displayed on the pattern display unit 13, and the rotation amount and the rotation of the X pulse motor 31 and the Y pulse motor 32 according to the selected embroidery pattern pattern. By controlling the direction, the embroidery pattern is sewn on the cloth mounted on the embroidery frame 40. At this time, the embroidery frame 4 is synchronized with the vertical movement timing of the sewing needle 1b based on the output of the timing sensor 4.
The movement timing of 0 is controlled. The control of the rotation amount and the rotation direction of the X pulse motor 31 and the Y pulse motor 32 is performed by driving circuits 33 and 3.
4 is supplied with a control signal from the CPU 3 to the power supply line 61.
A pulse current corresponding to the control signal is supplied to the X pulse motor 31 and the Y pulse motor 32 via a, 61b, 62a, and 62b. Also,
The direction of rotation is switched by changing the polarity of the pulse current. When the mode changeover switch 65 is turned on, an initial setting operation for temporarily setting the embroidery frame 40 to the origin position is performed before the start of the embroidery stitching. The detection signal of the Y origin detector 56 is used. As described above, the electric sewing machine with an embroidery device according to the present embodiment has a configuration in which the embroidery device 30 is detachable from the electric sewing machine main body 1 and receives power supply from the power supply circuit 2 in the electric sewing machine main body 1. The embroidery device 30
Can be reduced in size and weight, and the entire sewing machine can be reduced in size and weight. Further, only one power cord can be inserted into the outlet at the time of use, so that complicated handling is eliminated. In the present embodiment, the embroidery sewing control is performed by the CPU 3 in the electric sewing machine main body 1, so that the configuration of the embroidery device 30 can be simplified.
Can be reduced in size and weight. In the above-described embodiment, an X origin detector 55 and a Y origin detector 56 are provided to set the embroidery frame 40 at the origin position at the start of embroidery sewing. Although an example is shown in which the frame 40 is moved, the operator may manually move and set the embroidery frame 40 to a predetermined origin position at the start of embroidery sewing. In the above-described embodiment, the computer sewing machine that controls the operation of the present invention using a CPU is shown as an electric sewing machine main body. However, the present invention is not limited to this. Regardless, the present invention can be similarly applied to an electric sewing machine driven simply by motor power. However, in this case, it is necessary to mount a device having a dedicated control circuit (not limited to the CPU) in the embroidery device. Further, in this embodiment, the mode changeover switch 65 is operated by an operator. However, the mode changeover switch 65 may be automatically changed in connection with the attachment / detachment of the embroidery device 30. Good. As described in detail above, the electric sewing machine with the embroidery device according to the first aspect of the present invention is a motor for driving the embroidery frame of the embroidery device which is detachable from the electric sewing machine main body. By receiving power from the power supply circuit in the electric sewing machine body via the connector, there is no need to provide a power supply circuit in the embroidery device, the embroidery device can be made compact and lightweight, and the cost can be reduced by reducing the number of parts. The operation of the control circuit can be automatically switched to the embroidery sewing control mode in connection with the mounting of the embroidery device by the mode switching means, and the embroidery pattern is provided by the pattern selection means provided on the electric sewing machine main body. You can select a pattern. Further, since only one power cord is required, there is no need to insert two power cords into an outlet as in the conventional case. Extremely improved. Further, a power supply circuit and a main
Motor, drive circuit, and control circuit
It is easy to assemble the thin. Moreover, the drive from the power supply circuit
The wiring to the drive circuit can be shortened, and the sewing machine can be operated at a stable voltage.
Can be driven. If an embroidery frame drive mode is
If a drive circuit that supplies drive power to the
Since the distance from the power circuit of the body to the drive circuit becomes longer,
To stabilize the voltage, electrolytic capacitors are connected to the power supply in the embroidery device.
Sensor is required. The electric sewing machine with an embroidery device according to the second aspect has the effect of the electric sewing machine with the embroidery device according to the first aspect, and also corresponds to a control mode of a control circuit that is switched according to the attachment and detachment of the embroidery device. Since the display related to the pattern selection operation of the electric sewing machine main body is output to the display, the pattern selection operation is easy and the operability is greatly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing a configuration of one embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration in the embodiment. [Description of Signs] 1 Electric sewing machine main body 2 Power supply circuit 3 CPU 20, 38 Connector 30 Embroidery device 31 X pulse motor 32 Y pulse motor 40 Embroidery frames 61a, 61b, 62a, 62b Power supply line

Continuation of front page       (56) References JP-A-61-269717 (JP, A)                 JP-A-62-33661 (JP, A)                 JP-A-55-52790 (JP, A)                 JP-A-62-144537 (JP, A)                 JP-A-57-126236 (JP, A)                 JP-A-61-52879 (JP, A)                 JP-A-58-144924 (JP, A)                 Actual opening 58-138145 (JP, U)                 62-86670 (JP, U)                 Tokiko Sho 60-16710 (JP, B2)                 Jiko 62-21268 (JP, Y2)

Claims (1)

(57) [Claims] An electric sewing machine equipped with an embroidery device having an embroidery frame and an embroidery device provided with a motor for driving the embroidery frame, the embroidery device being detachable from the electric sewing machine main body. connector for connection is provided, the said connector has a power supply line for supplying to the embroidery unit from the power supply circuit of at least an electric sewing machine body, the motor of the embroidery frame driving, the power supply It is constructed from the line to receive power, and, in addition to a main motor, the main of the power supply circuit
Drive power to the motor for driving the embroidery frame and the motor for driving the embroidery frame.
The drive circuit to be supplied and the operation of the main motor and drive circuit
A control circuit for controlling the operation is provided on the electric sewing machine main body.
Is further a pattern selecting means, the mounting on the associated embroidering device and a mode switching means for switching the control mode of the automatic embroidering operation of the control circuit, the control mode of the embroidering, the An electric sewing machine with an embroidery device, wherein an embroidery pattern can be selected by a pattern selection means. 2. The electric sewing machine with an embroidery device according to claim 1, wherein a display is provided on the electric sewing machine main body, and display is performed in association with a pattern selecting operation of the pattern selecting means.