JP2002078993A - Warning apparatus for embroidery sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warning apparatus for an embroidery sewing machine, which ensures the safety of its operator at the time of starting point-detecting movement of an embroidering apparatus in X and Y directions in order to detect a starting point thereof, when a sewing machine body is set in a embroidering mode by installing the embroidering apparatus therein and turning on the power. SOLUTION: According to the movement of the embroidering apparatus in the X and Y directions in order to carry out the starting point-detecting movement, a carriage arranged at an upper portion of a machine frame also starts its movement. Therefore, by mounting a red pilot lamp, for instance, on the carriage as the warning apparatus, and lighting on a red pilot lamp before the starting point-detecting movement is started, the operator is warned by beforehand notifying the movement of the carriage and that of the embroidering frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a warning device for an embroidery sewing machine.

[0002]

2. Description of the Related Art When an embroidery device is mounted on a sewing machine main body and the power is turned on, the sewing machine main body enters an embroidery mode, and the embroidery device moves in the X and Y directions for detecting the origin.

[0003]

At this time, if the power is turned on while forgetting that the embroidery device detects the origin, the embroidery frame may hit the operator. In the past, there was a warning display stating "Origin detection" was displayed on the embroidery pattern selection display screen provided on the sewing machine main body, but this display screen was too far away from the embroidery frame to be overlooked. there were.

[0004]

Therefore, according to the present invention, when the origin detecting operation moves the embroidery frame in the X and Y directions, the carriage arranged above the machine frame of the embroidery device also moves the embroidery frame. Since the carriage moves in association with the carriage, for example, a red indicator lamp is attached to the carriage as a warning unit, and the carriage is illuminated before the start of the origin detection operation. Warning is given in advance.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a perspective view showing the appearance of an embroidery sewing machine according to one embodiment of the present invention. In the figure, reference numeral 10 denotes a sewing machine main body. The sewing machine main body 10 includes a sewing machine bed 12 and a sewing machine head 14 having a needle 13 erected on the sewing machine bed 12 and having a needle 13 at its front end which moves up and down by rotation of a main shaft. Have. This sewing bed 1
2 has a slender free arm 15 at the center thereof so that the cuffs of the shirt can be sewn.
A hook cover 16 in which a bobbin wound with a lower thread for forming a stitch in cooperation with the upper thread passed through the needle and a horizontal shuttle (not shown) is arranged at a front end of 5; In order to feed the cloth at the time of practical sewing, there is provided a cloth feed tooth 18 which moves up and down from the needle plate 17 in four feed movements.

Reference numeral 19 denotes a liquid crystal display (LCD) as display means provided on the sewing head 14. On the front surface of the display device 19, a transparent touch switch 20 capable of detecting a pressing operation position is arranged. When the operator presses the transparent touch switch 20 while a selection switch or the like for instructing a desired operation is displayed on the display device 19, the function of the selection switch corresponding to the pressed position is displayed. Upon determination, instruction information for executing the function is generated.

On the sewing machine head 14, a speed setting volume 21, a start / stop switch 22, a reverse stitching switch 23, and a thread trimming switch 24 are arranged on the operator side. An embroidery device 25 is detachably mounted so as to surround the free arm 15 of the sewing machine bed 12.
When the sliding arm 15 is slid from the distal end side and mounted as shown in FIG. 1, the sewing machine bed 12 and the embroidery device 25 are mechanically connected by a lock mechanism (not shown). Further, the cloth feed teeth 18 are lowered downward from the surface of the needle plate 17 so that the feed operation is invalidated.

[0008] An X, which will be described later, is placed on the machine frame of the embroidery device 25.
A carriage 26 that moves while being connected to the moving member 61 is disposed. An embroidery frame holding member 27 is disposed inside the carriage 26, and the embroidery frame 28 that holds the cloth via the embroidery frame holding member 27 is detachable. It is designed to be attached to. A warning light 29 is provided on the operator side of the carriage 26 as warning means. As the warning light 29, one in which one or several red light emitting diodes (LEDs) are arranged is optimal. Sewing machine body 10 and embroidery device 2
To release the embroidery device 5, the lock is released by pressing the release button 25a of the embroidery device 25, and the embroidery device 25 can be removed from the sewing machine main body 10.

As shown in FIG. 2, an X driving pulse motor 60 and an X moving member 6 which is moved in the X direction by the X driving pulse motor 60 are provided in the machine frame of the embroidery device 25.
1 and a Y drive pulse motor 62 mounted on the X moving member 61. The upper portion of the X moving member 61 projects on the machine frame of the embroidery device 25 together with the drive shaft 62a of the Y drive pulse motor 62, and the carriage 26 is fixed to the projecting upper portion of the X moving member 61. The carriage 26 is provided with a Y-moving member 63 that moves in the Y-direction by a driving shaft of the Y-driving pulse motor 62, and the embroidery frame 28 is detachably mounted on the Y-moving member 63. The embroidery frame holding member 27 is provided. FIG. 1 shows two grooves at the center of the carriage 26 so that the upper part of the X moving member 61 protruding above the machine frame of the embroidery device 25 can move along the X direction.

The XY driving pulse motors 60 and 62
Of the embroidery frame 2 via the moving members 61 and 63
8 is moved in the X direction and the Y direction.
8, the desired embroidery pattern can be formed in cooperation with the vertical movement of the needle by the drive of 8. Further, the carriage 26 arranged above the machine frame of the embroidery device 25 also has the X moving member 61.
Move in the X direction.

[0011] For example, straight stitching, zigzag stitching,
When practical sewing other than embroidery patterns such as buttonhole sewing is performed, an auxiliary bed (not shown) for supporting a cloth is attached to the free arm 15 of the sewing machine main body 10 instead of the embroidery device 25. This auxiliary bet is placed on the embroidery device 2
The embroidery device 2 has a machine frame having substantially the same shape as the machine frame of No. 5
As in the case of No. 5, it is slid and mounted on the sewing machine main body, and has no electric parts inside. Further, in order to perform the practical sewing, the feed dog 18 provided on the free arm 15 is brought into and out of the needle plate 17 in synchronization with the vertical movement of the needle 13 to perform the cloth feeding operation.

FIG. 3 shows a control block diagram of the embroidery sewing machine according to the present embodiment. Reference numerals 30 and 31 denote connectors which are connected when the embroidery device 25 is mounted on the sewing machine main body 10 and are connected to both electric circuits. A central control unit 37 as a control means, an input interface 39 for transmitting input information to the central control unit 37, and information output from the central control unit 37 are provided in the control unit 35 of the sewing machine main body 10 to each output device. An output interface 41 for transmitting is connected. The central control unit 37 temporarily stores the embroidery pattern data, the practical pattern data, the display data to be displayed on the display device 19, the ROM 45 storing a program for controlling the present system, the CPU 47, and the data. And a RAM 49.

On the input side of the input interface 39, the input signals output from the transparent touch switch 20, the speed setting potentiometer 21, the start / stop switch 22, the reverse stitch switch 23, and the thread trimming switch 24 are attached to the main shaft of the sewing machine. The input signal from the spindle sensor 50 for detecting the upper position signal, the lower position signal of the needle 13 and the rotation angle signal of the spindle, and the position of the presser foot lifting lever for moving the work clamp up and down before and after sewing are detected. An input signal from the presser lifting lever sensor 52, an input signal from the lower thread remaining amount sensor 54 for detecting the remaining amount of the lower thread wound on the bobbin, and a thread break sensor for detecting a thread break of the upper thread during sewing. And an input signal from the device.

From the output interface 41, a main motor 58 for moving the needle up and down, the cloth feeding operation of the cloth feed dog and the rotation of the horizontal shuttle via a drive circuit, and the needle 13 is connected to the feed direction of the cloth feed tooth. An output signal for driving the display device 19 and a needle swing motor 59 that moves in the orthogonal direction are generated.

On the other hand, the drive signals output from the drive circuit of the output interface 41 are connected to the connectors 30 and 31.
The X drive pulse motor 60 of the embroidery device 25 and Y
The driving pulse motor 62 and the warning lamp 29 are supplied.

The X moving member 61 is connected to the input interface 39 via connectors 30 and 31.
And an X-axis origin sensor 64 and a Y-axis origin sensor 66 disposed at the moving end of the Y moving member 63, respectively, and an embroidery frame detection sensor 68 for identifying the size of the embroidery frame 28 mounted on the embroidery frame holding member 27. Each of the detection signals output from the embroidery device mounting sensor 70 for detecting that the embroidery device 25 is electrically connected to the sewing machine main body 10 can be input. A power supply circuit 72 includes a power switch, and supplies power to the control unit 35 of the sewing machine main body.

Next, the operation of the present invention when the power is turned on will be described with reference to FIG. Power supply circuit 7 provided in sewing machine body 10
When the power switch 2 is turned on (S1), the RAM 49 is initialized (S2), and it is determined whether or not the embroidery device 25 is mounted on the sewing machine main body 10 based on an input signal from the embroidery device mounting sensor 70 (S3).

At this time, when it is determined that the embroidery device is not mounted, the sewing machine enters a main body mode in which practical sewing is performed (S4), and a plurality of practical sewing patterns are displayed on the display device for pattern selection. Is done. Transparent touch switch 20
When the desired pattern is selected by the operation of and the start switch 22 is operated, the CPU 47 reads the sewing data of the selected pattern from the ROM 45, drives the main motor 58 and the needle swing motor 59 of the sewing machine main body 10, and drives the main shaft. By rotating the needle, a practical sewing pattern is formed on the cloth by the vertical movement of the needle, the swinging action of the needle and the feeding action of the feed dog.

When it is determined from the input signal from the embroidery device mounting sensor 70 that the embroidery device 25 is mounted on the sewing machine main body 10 as shown in FIG. Is in the up position? Is the presser foot upward by the presser foot lever sensor 54? Is the embroidery frame mounted by the embroidery frame detection sensor 68? Is determined, and if either is NO, an error message to that effect is displayed on the display device, and the process stands by until the error is resolved and each sensor is inverted to YES (S5).

If the answer is YES, the warning light 29 provided on the carriage 26 is turned on (S
6). After a predetermined number of seconds have elapsed after the lighting, the origin detection process of the embroidery device is executed (S7). That is, the XY driving pulse motors 60 and 62 are driven to drive the XY moving members 61 and 6.
3 moves in a predetermined direction, the carriage 26 moves in relation to the movement of the X moving member 61, and the embroidery frame 28 reciprocates or moves in at least one direction in relation to the movement of the X and Y moving members 61 and 63. I do. Then, the XY axis origin sensors 64 and 66 provided at the respective moving ends are turned on. When the XY axis origin sensors 64 and 66 are turned on, XY
By driving the driving pulse motors 60 and 62 in the reverse direction to drive a predetermined number of driving pulses, the embroidery frame 28
Is moved and stopped. In this way, the warning lamp 29 is turned off at the same time when the origin detection processing is completed (S8), and the processing is terminated.

Next, the operation when embroidery sewing is performed in the embroidery sewing mode will be described with reference to FIG. A plurality of embroidery patterns are displayed on the display screen of the display device 19 for selecting a pattern. The operator presses and selects a desired pattern by operating the transparent touch switch 20. Next, the display screen is changed to an edit screen, and the embroidery frame corresponding to the size of the embroidery frame 28 mounted on the sewing machine main body 10 and the selected pattern are displayed. Then, the jog key displayed on the display screen is pressed. When a desired position of the embroidery pattern with respect to the embroidery frame is designated by an operation, the embroidery pattern is moved and displayed on the display screen at the desired position (S11).

Next, when the start switch 22 is operated (S12), is the needle detected by the spindle sensor 50 in the upper position? Is the presser foot upward by the presser foot lever sensor 54? Is the embroidery frame mounted by the embroidery frame detection sensor 68? Is determined, and if either is NO, an error message to that effect is displayed on the display device, and the process stands by until the error is resolved and each sensor is inverted to YES (S13).

If the answer is YES, the warning light 29 provided on the carriage 26 is turned on (S
14). After a predetermined number of seconds elapse after the lighting, the embroidery device 25
Is executed (S15). That is, CPU4
7 determines the display pattern corresponding to the pressed position of the transparent touch switch 20, and reads the sewing data of the determined selected pattern from the ROM 45. Next, the X / Y drive pulse motors 60 and 62 of the embroidery device 25 are driven to move the embroidery frame 28 to the needle 13 to the sewing start position corresponding to the embroidery pattern arrangement position designated on the edit screen. After that, the main motor 58 of the sewing machine main body 10 and the XY driving pulse motors 60, 62 of the embroidery device 10 are driven to drive the XY moving members 61, 63 for each stitch of the needle up and down. Perform embroidery stitching. At this time, the carriage 26 moves to the X moving member 6.
Move in relation to the movement of 1. In this way, the warning light 29 is turned off at the same time when the embroidery sewing process is completed (S16).
The process ends.

As described above, the present invention is not limited to the detection of the origin, and the warning lamp 29 may be turned on every time the embroidery device operates. Further, the warning light 29 may not be turned on every time the embroidery device is operated, but may be turned on before the embroidery device is operated after the embroidery device has been stopped for a certain period of time. Further, the warning lamp 29 may be turned off at the same time as the start of the operation or earlier, without being turned on until the origin detection processing and the embroidery sewing are completed.

Although the warning light 29 is a red LED, the color may be blue, yellow or the like.
An EL lamp may be used. Further, the lighting is not limited to continuous lighting, but may be intermittent lighting. Further, by providing a device that generates a warning sound such as a speaker or a buzzer in the sewing machine main body 10 or the embroidery device 25, a warning sound such as a voice warning, a warning melody sound, or a buzzer sound is used together with a warning by the warning lamp 29. Alternatively, a warning sound may be used independently. Further, although the warning light 29 is arranged on the worker side of the carriage 26, it may be arranged on the entire carriage 26, and a light emitting diode may be arranged on the embroidery frame 28 so that the embroidery frame 28 also shines. In this case, a connector for connecting the light emitting diode mounted on the embroidery frame 28 may be mounted on the embroidery frame holding device 27. Alternatively, the embroidery frame 28 may be illuminated using an optical fiber, or the light of a warning light 29 disposed on the carriage 26 may be guided.

The carriage 26 of the above embodiment is mounted on an X moving member 61 driven by an X driving pulse motor 60 so as to move in the X direction. That is, the Y drive pulse motor 62 and the Y move member 63 are mounted on the X move member 61 driven by the X drive pulse motor 60, and the Y move member 63 is placed in the carriage 26 on the machine frame of the embroidery device 25. This is because it is configured to accommodate and move in the X direction.

Therefore, another embodiment in which the relationship between the X and Y members is reversed is conceivable. That is, when the X driving pulse motor 60 and the X moving member are mounted on the Y moving member driven by the Y driving pulse motor 62 and the X moving member is moved in the Y direction, the carriage 26 is moved to the Y direction. By attaching the embroidery frame 28 to the X moving member while attaching the embroidery frame 28 to the X moving member, the embroidery frame 28 is combined with the X direction movement by the Y moving member and the X direction moving by the X moving member.・ Y movement can be realized.

In the above embodiment, the carriage 26 is
The carriage 26 is moved in one of the embroidery frame 28 and the Y direction.
As in the case of FIG. 8, it may be moved in the X and Y directions combined by the X moving member driven by the X driving pulse motor 60 and the Y moving member driven by the Y driving pulse motor 62.

[0029]

As described above, in the warning device for an embroidery sewing machine according to the present invention, the warning light is arranged on the actually moving carriage and is turned on before the operation of the carriage.
The operator does not miss the warning display, and can perform the avoidance operation in advance, which is safe.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sewing machine showing an embodiment of the present invention.

FIG. 2 is a perspective view of an XY moving mechanism of the embroidery device according to the embodiment of the present invention.

FIG. 3 is a control block diagram of the sewing machine according to the embodiment of the present invention.

FIG. 4 is an operation flowchart at power-on according to an embodiment of the present invention.

FIG. 5 is an operation flowchart at the time of forming an embroidery pattern according to the embodiment of the present invention.

[Explanation of symbols]

10: sewing machine body, 12: sewing machine bed, 13: needle, 1
4: sewing machine head, 15: free arm, 16: hook cover, 17: needle plate, 18: cloth feed dog, 19: display means, 2
0: transparent touch switch, 21: speed setting volume,
22: start / stop switch, 23: reverse stitch switch, 24: thread trimming switch, 25: embroidery device, 2
6: carriage, 27: embroidery frame holding member, 28: embroidery frame, 29: warning light, 30, 31: connector, 35: control unit, 37: central control unit, 39: input interface,
41: output interface, 45: ROM, 47: C
PU, 49: RAM, 50: spindle sensor, 52: presser lifting lever sensor, 54: bobbin thread remaining amount sensor, 58:
Main motor, 59: Needle swing motor, 60: X driving pulse motor, 61: X moving member, 62: Y driving pulse motor, 63: Y moving member, 64: X axis origin sensor, 6
6: Y-axis origin sensor, 68: Embroidery frame detection sensor, 7
0: Embroidery device mounting sensor, 72: Power supply circuit

Claims (1)

[Claims] 1. A sewing machine body in which a main shaft is rotated by a main motor so that needles can be moved up and down, an embroidery frame for holding a cloth, and an X drive motor and a Y drive An embroidery device detachably mounted on the sewing machine main body, comprising: a moving member movable in the X and Y directions by a motor for use; and a carriage arranged above the machine frame and movable by the moving member; Means for detecting the origin of the X drive motor and the Y drive motor when the apparatus is mounted and turning on the power switch; warning means mounted on the carriage; and setting the X drive motor and the Y drive motor to the origin. A warning device for an embroidery sewing machine, comprising: control means for operating the warning means before the detection drive.