JP3097706B2 - Sewing machine with embroidery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine with an embroidery device, and in particular, detects the setting position of a sewing length setting lever and the mounting state of a cloth edge cutting device at the start of embroidery sewing using the embroidery device. Alerts the user when embroidery stitching is in trouble.

[0002]

2. Description of the Related Art Conventionally, practical patterns such as straight stitches and zigzag stitches can be sewn, and detachably mounted on a free arm portion of a sewing machine so that embroidery stitching of relatively large characters, concrete and figures can be performed. Embroidery devices have been proposed.

[0003] For example, the applicant of the present invention has disclosed in
In Japanese Patent Publication No. 84-84, an embroidery table is configured to be movable in a cloth feeding direction and a counter cloth feeding direction (Y direction) and an X direction orthogonal to the Y direction, and an X direction drive signal received from the sewing machine main body is received by the embroidery table. The embroidery pattern can be formed on the work cloth by moving the embroidery table by driving the second pulse motor with the Y-direction drive signal while driving the first pulse motor in the X direction by driving the We proposed an embroidery device to be mounted on the embroidery.

In general, in a sewing machine with an embroidery device of this type, an operation lever for setting a sewing length of a work cloth in a cloth feeding direction for button button sewing or darning sewing is provided with a free arm near a presser foot. It is provided on the sewing machine head so as to be able to move up and down between a lower position near the upper part and a raised position. In addition, a cloth edge cutting device (side cutter) can be detachably mounted on the free arm portion near the needle drop position so that the cloth edge of the work cloth immediately before performing the overcast sewing can be automatically cut. It has become.

[0005]

As described above, in the conventional sewing machine with an embroidery device, the embroidery device is mounted on the free arm portion of the sewing machine main body, and the side cutter is detachably mounted. Since the operation lever is configured to be able to move up and down, when the embroidery device is mounted on the free arm portion and embroidery sewing is performed, the operation lever is at the lowered position, or the side cutter is moved to the free arm portion. When mounted, there is a problem that the support frame supporting the work cloth of the embroidery device moves during embroidery sewing and collides with these operation levers and side cutters.

SUMMARY OF THE INVENTION It is an object of the present invention to issue a warning when embroidery sewing is performed using an embroidery device, when a setting position of a sewing length setting lever and a mounted state of a cloth edge cutting device interfere with embroidery sewing. It is an object of the present invention to provide a sewing machine with an embroidery device.

[0007]

A sewing machine with an embroidery device according to the present invention, as shown in a functional block diagram of FIG. 1, has an embroidery device provided on the sewing machine main body and a vertically movable position switchable on the head of the sewing machine main body. Sewing length setting means for setting the sewing length in the work cloth feed direction, and a cloth end cutting device detachably mounted on a bed of the sewing machine main body. Detecting means for detecting a setting position of the sewing length setting means and / or a mounting state of the cloth end cutting device in a sewing machine with an embroidery device provided with at least one of a cloth end cutting device for cutting the cloth end; A display for displaying a warning indicating that the operation of the embroidery device is prohibited when the sewing length setting device is at the lowered position and / or when the cloth edge cutting device is in the mounted state based on the detection result of the detecting device. Warning means having It is those with a.

[0008]

In the sewing machine with an embroidery device according to the present invention,
The detecting means is provided on the head of the sewing machine body so as to be capable of switching a vertical position, and is set at a sewing length setting means for setting a sewing length in a work cloth feed direction and / or detachably mounted on a bed of the sewing machine body. Detects a mounted state of the cloth edge cutting device to be mounted, which cuts the cloth edge of the work cloth upstream of the sewing position. The warning means activates the embroidery device when the sewing length setting means is in the lowered position and / or when the cloth edge cutting device is in the mounted state based on the detection result of the detection means at the start of embroidery sewing. A warning to prohibit is displayed on the display.

[0009]

According to the sewing machine with the embroidery device according to the present invention, the detection means and the warning means are provided, and the setting position of the sewing length setting means and / or Alternatively, when the installation state of the cloth edge cutting device is detected, and a warning is displayed when the sewing length setting means is at the lowered position and / or when the cloth edge cutting device is in the mounting state, setting of the sewing length setting lever is performed. When the position or the mounting state of the cloth edge cutting device interferes with the embroidery sewing, a warning can be issued beforehand.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the present invention is applied to an electronic control sewing machine with an embroidery device capable of detachably mounting an embroidery device capable of sewing various embroidery patterns. As shown in FIG. 2, the electronic control sewing machine M includes a sewing machine bed 1, a pillar 2 erected from the right end of the bed 1, and a bed 2 facing the bed 1 from the pillar 2. The bed 1 is provided with a feed dog vertical movement mechanism (not shown) for moving the feed dog up and down, a feed dog longitudinal movement mechanism (not shown) for moving the feed tooth back and forth, and the like. The arm section 3 includes a needle bar driving mechanism for vertically moving a needle bar 5 on which a sewing needle 6 can be mounted at a lower end, a needle bar swinging mechanism for swinging the needle bar 5 in a direction perpendicular to the cloth feeding direction, and a balance. A balance driving mechanism (not shown) that moves up and down in synchronization with the up and down movement of the needle bar is provided. The feed dog vertical movement mechanism, the needle bar drive mechanism, and the balance drive mechanism are driven by a sewing machine motor 17, the feed dog longitudinal movement mechanism is driven by a feed dog drive stepping motor 19, and the needle bar swing mechanism is a needle It is driven by a rod swinging stepping motor 18.

A large-sized liquid crystal display 10 is provided on the front of the arm 3.
Various stitch patterns such as practical patterns and embroidery patterns and figures such as figurines and various messages are displayed. Further, on the front surface of the display 10, touch keys 11 made of transparent electrodes are provided corresponding to the display positions of a plurality of stitch patterns, respectively.
1 can be selected by pressing. Head 4
Is provided with a start / stop switch 12 for instructing start and stop of the sewing operation. Further, an operation panel 13 is provided on the front surface of the upper end portion of the pillar 2.
Has nine function keys (practical sewing key for displaying a practical pattern, character sewing key for displaying a character pattern, embroidery sewing start key 13a for starting embroidery pattern sewing, etc.).
Is provided.

Further, a switching lever 7 for automatically switching the sewing direction and setting the sewing length in the work cloth feed direction is supported on the head 4 so as to be able to move up and down during buttonhole buttonhole sewing. And a lever detection switch 1 that is closed or opened in conjunction with the vertical movement of the switching lever 7.
4 are provided. Therefore, the lever detection switch 14 is closed when the switching lever 7 is in the non-use position where it is raised, and is opened when it is in the use position where it is lowered.

A free arm 1a is formed at the left end of the bed 1, and an embroidery device 30 is detachably mounted on the free arm 1a. In the embroidery device 30, an embroidery table 31 is provided so as to be movable in a Y direction parallel to a cloth feeding direction and a counter cloth feeding direction and in an X direction orthogonal to the Y direction. A support frame 32 for supporting the camera can be detachably mounted. A first stepping motor 33 for driving the embroidery table 31 in the X direction and a second stepping motor 34 for driving the embroidery table 31 in the Y direction are arranged in the main body frame of the embroidery device 30. The stepping motors 33 and 34 are connected to the connector 27 on the minced M side.
Are respectively driven by receiving drive signals supplied through
Therefore, various embroidery patterns are formed on the work cloth supported by the support frame 32 by the cooperation of the drive of the stepping motors 33 and 34 by the drive signal supplied from the sewing machine M and the vertical movement of the needle bar 5. It has become.

Further, a side cutter (cloth end cutting device) 8 for cutting the cloth end of the work cloth upstream of the overlock stitching position in the cloth feed direction at the time of seam overlock stitching or the like is provided on the free arm portion 1a. Can be attached detachably. Further, a side cutter detection switch 15 for detecting the mounted state of the side cutter 8 is provided in the free arm portion 1a. Therefore, the side cutter detection switch 15 is closed when the side cutter 8 is mounted on the free arm 1a, and is opened when the side cutter 8 is removed from the free arm 1a.

Next, an outline of a control system of the sewing machine M is configured as shown in a block diagram of FIG. A start / stop switch 12, a touch key 11, an operation panel 13,
The timing signal generator 16 is connected to the input interface 21 of the control device C. The output interface 26 of the control device C has a sewing machine motor 1
7. Stepping motor 18 for swinging the needle bar, stepping motor 19 for driving the feed dog, display (LCD) 10
And a display controller (LCDC) 20 for each of them. Further, a first stepping motor 33 and a second stepping motor 34 of the embroidery device 30 are connected to the output interface 26 via connectors 27, respectively.

The input port P1 of the input interface 21 is connected to the input terminal of the lever detection switch 14, and the output terminal of the switch 14 is grounded. An input terminal of the side cutter detection switch 15 is connected to an input port P2 of the input interface 21, and an output terminal of the switch 15 is grounded. Further, +5 V is supplied to both of these input ports P1 and P2, respectively.
These two input ports P1 and P2 are always pulled up to "H" level. Therefore, an "L" level signal is input to the input port P1 when the switching lever 7 is in the non-use position, and an "H" level signal is input to the input port P1 when the switch lever 7 is in the use position. On the other hand, an “L” level signal is input to the input port P2 when the side cutter 8 is mounted, and an “H” level signal is input to the input port P2 when the side cutter 8 is removed.

The control device C comprises a CPU 23 and this CPU
23, an input interface 21 and an output interface 26 connected via a bus 22 such as a data bus.
It comprises a ROM 24, a RAM 25 and the like.

In the ROM 24, the stitch data of each stitch pattern for practical sewing, pattern stitching and embroidery stitching is stored for each pattern type in association with a pattern code number.
24 also stores a control program for pattern sewing control for sequentially reading and sewing the stitch data of each of the selected and set stitch patterns. Further, the ROM 24 stores the motors 17-1.
9, a display control program for displaying display data on the display 10, a control program for a warning message display control for displaying various warning messages on the display 10 when sewing an embroidery pattern, and execution of the control. The display data and the like for various messages to be displayed therein are stored. The RAM 24 is provided with a pattern memory for storing pattern numbers of a plurality of stitch patterns selected by the operation of the touch key 11, a pointer, a counter, a buffer, and the like for temporarily storing a calculation result calculated by the CPU 23. .

Next, the routine of the warning message display control performed by the control device C of the sewing machine M will be described with reference to the flowchart of FIG. Incidentally, the reference symbol Si (i
= 10, 11, 12, ...) are each step.

After the embroidery device 30 is mounted on the sewing machine M, this control is started when the embroidery sewing start key 13a of the operation panel 13 is operated to start embroidery pattern sewing.
First, the port signal of the input port P1 is read (S1
0), when this port signal is at the "L" level, that is, when the switching lever 7 is raised to the unused position (S11: Y)
es), the port signal of the input port P2 is read (S1
2) When this port signal is at "H" level, that is, when the side cutter 8 is not mounted on the sewing machine M (S1).
3: No), this control ends. However, when the read port signal of the input port P1 is at the "H" level, that is, when the switching lever 7 is lowered to the use position (S11:
No), a warning message "Please raise the switching lever used for button buttonhole sewing" is displayed on the display 10 (S14), and this control ends. On the other hand, even if the read port signal of the input port P1 is at the “L” level (S10, S11: Yes), when the port signal of the input port P2 is at the “L” level (S12, S13:
Yes), a warning message "Please remove the side cutter." Is displayed on the display 10 (S1).
5).

As described above, at the time of embroidery sewing, the up / down position of the switching lever 7 and the mounted state of the side cutter 8 are detected, and when the switching lever 7 is at the lowered position or the side cutter 8 is mounted on the sewing machine M. Is displayed, a warning is displayed on the display 10. Therefore, when the elevation position of the switching lever 7 and the mounting state of the side cutter 8 interfere with the embroidery sewing, a warning can be prompted beforehand.

The warning message display control S1 is executed.
4. In S15, instead of displaying the warning message,
A warning lamp provided on the front surface of the arm 3 may be turned on, or a warning buzzer may be sounded. In addition to the display of the warning, the drive circuit of the sewing machine motor 17 may be controlled to be cut off so that the sewing machine motor 17 is not driven by the operation of the start / stop switch 12. Incidentally, the elevation position of the switching lever 7 and the mounting state of the side cutter 8 can be detected using various sensors other than those described above. Further, the embroidery device is not limited to a detachable one,
It may be of a type permanently installed in the sewing machine main body.

Incidentally, for reference, as a factor that hinders embroidery sewing, there are mounting of presser feet other than for embroidery sewing and vertical movement of the feed dog. Therefore, while these are detected at the time of embroidery stitching, when these states interfere with the embroidery stitching, it is possible to prompt a warning by a warning message.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a configuration of the present invention.

FIG. 2 is a front view of the electronic control sewing machine on which the embroidery device is mounted.

FIG. 3 is a block diagram of a control system of the electronic control sewing machine.

FIG. 4 is a schematic flowchart of a warning message display control routine;

[Explanation of symbols]

 M electronic control sewing machine 7 switching lever 8 side cutter 10 liquid crystal display 14 lever detection switch 15 side cutter detection switch 21 input interface 23 CPU 24 ROM 25 RAM 30 embroidery device C control device P1, P2 input port

Claims (1)

(57) [Claims] 1. An embroidery device provided on a sewing machine main body, a sewing length setting means provided on a head of the sewing machine main body so as to be capable of switching a vertical position, and a sewing length setting means for setting a sewing length in a work cloth feed direction. A sewing machine equipped with an embroidery device, comprising: a cloth edge cutting device detachably mounted on a bed, and at least one of a cloth edge cutting device for cutting a cloth edge of a work cloth upstream of a sewing position. Detecting means for detecting a setting position of the sewing length setting means and / or an attached state of the cloth edge cutting device; and when the sewing length setting means is at a lowered position based on a detection result of the detecting means, And / or a warning means having a display for displaying a warning to prohibit the operation of the embroidery device when the cloth edge cutting device is in the mounted state.