JPH1119348A - Overlock sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a user be possible to clearly grasp a point to control thread tension by making only ones for displays/keys for thread tension setting to set the thread tension corresponding to devices used for a selected stitch form be in a working state and displaying the ones on a device display corresponding to the corresponding keys. SOLUTION: Before sewing work, a stitch display screen is on a display part 16 for a user to select a stitch form on the screen. When a stitch form is selected, an automatic thread tension screen is displayed to display a thread kind designating display 26 on a selected stitch form display 23, an automatic thread tension control display 24, or a device display 27, and the kind of thread and devices to be used and not used are displayed. LEDs in the vicinity of simultaneously used threads are turned ON through a CPU to indicated the thread groove to be used. When the user selected a manual thread tension setting by operating a manual thread tension selection key 25, thread tension set by operating the thread tension setting display/key is set by the thread tension control device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an overlock sewing machine.

[0002]

2. Description of the Related Art In an overlock sewing machine, one or two needles and instruments such as an upper looper and a lower looper are required to form a stitch configuration. Requires 4-5 instruments such as loopers. Usually, a thread path and a thread tensioner for guiding a thread to these instruments are provided for each instrument. All of these instruments are not always used and may or may not be used depending on the seam configuration. Therefore, it is necessary to pass a thread through an instrument used according to the form of the seam, remove the thread from an unused instrument, and adjust the thread tension of an instrument to be used.

[0003]

However, when a device to be used is determined for each stitch type, a thread is attached or detached, and a corresponding thread tensioner is set, a device to be used in a selected stitch type is used. It is necessary to accurately determine the equipment to be used and the equipment not to be used, the correspondence between the yarn path and the equipment, the correspondence between the equipment and the thread tensioner, and this point has been a greater burden on the user than before. . For this reason, the yarn path and the thread tensioner have been devised by color coding for each device, but the device used and the device not used cannot be distinguished by color coding, and the effect of reducing the burden on the user was insufficient. . Also, in recent years, those equipped with an automatic thread tension device using power are commercially available, but the relationship between the key for thread tension adjustment and the thread tension device and the relationship between the adjusted numerical values are unclear,
There was a problem that caused confusion for the user. An object of the present invention is to remedy the above-mentioned disadvantages of the prior art.

[0004]

SUMMARY OF THE INVENTION To achieve the above objects, the present invention provides a plurality of instruments for forming a stitch configuration, a plurality of thread paths for guiding the respective instruments, and each of the plurality of threads. A plurality of thread tensioners for adjusting the respective tensions applied to the thread guided to the device, a means for selecting a stitch configuration, and a thread tensioner corresponding to each device. A key for setting a thread tension, a means for driving a corresponding thread tensioner based on the thread tension set by the key, and a seam form selected by the selecting means. Means for activating only the key corresponding to the instrument, and display of the correspondence between the instrument for forming the seam form selected by the means for selecting and the key corresponding to the instrument. Means, Characterized by comprising. In the above configuration, the keys for setting the thread tension are only those corresponding to the instrument used for the selected stitch configuration,
In addition to being in the operating state, the correspondence between the key and the device is displayed, so that the user can clearly understand which device the thread tension is to be performed on. Also, a means for storing thread tension setting data corresponding to the stitch configuration and a thread tension device corresponding to the selected stitch configuration are driven based on the thread tension setting data from the storage means. Means may be configured to automatically set the standard thread tension by selecting a stitch configuration, and may be configured to manually set the standard thread tension when the automatic setting is not satisfactory. Further, there is provided means for displaying a thread tension value set by a key for setting the thread tension in association with the selected instrument, and displaying a thread tension value set by the key in association with the instrument. By doing so, the thread tension can be set more easily. The display means and keys in the preferred embodiment are constituted by a touch panel. In addition to the above, a means for indicating a thread path such as an LED near the thread path is provided, and a thread path corresponding to the selected stitch form is indicated by an LED or the like, so that the thread path to be used can be reliably determined. Can be notified to the user.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram, and FIG. 2 is an external perspective view. The CPU 50 controls the entire overlock sewing machine. For example, the CPU 50 controls the sewing machine motor drive circuit 53 in accordance with commands from the S / S key 57 and the speed controller 58, and the stitch forming mechanism 55 through the sewing machine motor 54. The sewing is performed. The stitch forming mechanism 55 is provided with two needles 1, 1, and the sewing is performed by the two or one needle 1. Reference numeral 51 denotes a storage device that stores a program for controlling basic operations. 52 is a temporary storage device. In FIG. 2, a touch panel 20 including a liquid crystal display and a transparent contact switch is provided on the front side of the arm unit, and various display and operation commands are input through the touch panel 20 as described later. Has become. Further, a plurality of thread grooves 7 are provided on the front side of the main body, and LEDs 6 are provided in the vicinity of the plurality of thread grooves 7, respectively. The thread grooves 7 corresponding to the equipment to be used are indicated by the LEDs 6.

The touch panel 20 has a display unit 16 and an operation unit 17 superposed on the display unit 16. The CPU 50 causes the display unit 16 to perform various displays via the display control device 15, Various controls are performed according to operation commands. Since the command from the operation unit 17 differs depending on the display state of the display unit 16, the operation content determination device 32 determines the content of the operation of the operation unit 17.

The display unit 16 includes a display data storage device 30
Is displayed. FIG. 3 shows an example of the display. A total of 15 types of stitch forms are displayed by the stitch form display / key 21. Reference numeral 22 denotes a next screen designation display / key. By touching the next screen designation display / key 22, the screen is switched in the order of (A), (B), and (C).

In the screen shown in FIG. 3, when the stitch form is selected by the stitch form display / key 21, the selection operation is decoded by the operation content discriminating device 32 and the CPU 5
0, and a predetermined process is performed.
The CPU 50 reads the stitch data corresponding to the selected stitch form from the stitch form data storage device 31 and temporarily stores the data in the temporary storage device 52, and the setting control device 1.
It is configured to control 0 to activate the instrument used to form the selected stitch configuration. That is, here, the upper looper 2, the lower looper 3, and the double looper 4 that correspond to the selected stitch form
Is set to the operating state.

At the same time, the CPU 50 reads out standard thread tension data corresponding to the selected stitch form from the thread tension setting data storage device 33, and according to this data, the respective devices used by the thread tension controller 12 and the actuator 13 The thread tension of the thread tension device 5 is automatically set.

In this embodiment, a thread path indicating device 35 is further provided, and the LED 6 is selectively turned on through the thread path instruction control device 14 to indicate the thread groove 7 to be used for the selected stitch form by the LED 6. It is configured to be.
Note that the LED 6 corresponds to a device guided by color coding.

In this embodiment, a thread type designating device 36 is further provided, and a thread type suitable for the selected stitch form is displayed on the display unit 16 for each appliance.

FIG. 4 shows an example of a display on the display unit 16 when the stitch form is selected. The selected stitch form display 23 is displayed, and the automatic thread tension display 24 indicates that the standard thread tension stored in the thread tension setting data storage device 33 is automatically set. On the lower side of the display unit 16, an appliance display 27 is drawn by a fixed picture. In this case, the needle 1, the needle 2, the upper looper 2, the lower looper 3, and the double ring looper 4 are divided by the picture and the color. Is displayed. Note that the appliance display 27 may be configured to be displayed as a part of the display in the display unit 16. Immediately above the appliance display 27, a yarn type designation display 26 is provided to indicate a yarn type suitable for each appliance. Instruments that do not indicate a thread type are configured to mean that they are not used in the selected stitch configuration. Here, since the double ring looper 4 is not used,
The thread type designation display 26 corresponding to the double ring looper 4 is blank.

FIG. 5 shows an example of the display section 16 when another different stitch form is selected. Here, it is shown that the needle 1 and the double ring looper 4 are not used. FIG.
In FIG. 5, reference numeral 29 denotes a feed amount display, 29 'denotes a differential amount display, and 40 denotes a sewing width switching key.

4 and 5, when the automatically set thread tension cannot be satisfied, the thread tension can be manually set by touching a manual thread tension selection key 25. The CPU 50 displays the display unit 16 based on the data from the display data storage device 30 as shown in FIG.
Is displayed. FIG. 6 is a screen that appears when the manual thread tension selection key 25 is operated on the screen of FIG. 4. The thread tension setting display / key 28 is displayed on the instrument display 27. The thread tension setting display / key 28 is used to display the used instrument 2.
7 is provided only with the plus and minus keys as shown in the drawing, and the current thread tension automatically set can be increased or decreased by operating the respective keys. Above each thread tension setting display / key 28, a thread tension numerical value display 41 is further provided. The current thread tension numerical value is sequentially displayed, and the user can display the thread tension numerical value on the appliance display 27. It is configured such that it can be easily and clearly grasped in correspondence with the above. Thread tension setting display /
When the key 28 is operated, the CPU 50 causes the thread tension setting data generation device 34 to generate thread tension data according to the operation, and controls the thread tension control device 12 based on the data to control each of the thread tension devices 5 as an actuator. 13 for adjustment.

The operation of this embodiment will be described with reference to the flowchart of FIG. First, the stitch form is displayed as shown in FIG. 3 (step S1). If the next screen is designated by the next screen designation display / key 22, the next screen is displayed (step S2). When the stitch form is selected (step S3), the automatic thread tension screen shown in FIG. 4 or 5 is displayed, and the thread type is displayed on the selected stitch form display 23, the automatic thread tension display 24, and the instrument display 27. The designation display 26 is displayed, and the equipment used together with the thread type and the equipment not used are shown (step S4). FIG.
The LED 6 near the thread groove 7 to be used is turned on as shown in (1) to indicate the thread groove 7 to be used (step S5). When the user operates the manual thread tension selection key 25 to select manual thread tension setting (step S6), a screen shown in FIG. 6 is displayed (step S7), and the user operates the thread tension setting display / key 28. The set thread tension is set by the thread tension controller 12 (step S8).

According to the embodiment described above, only the thread tension setting display / key 28 for setting the thread tension corresponding to the instrument used for the selected stitch form is activated. Since the thread tension setting display / key 28 is displayed on the corresponding instrument display 27, it is possible to clearly understand which instrument the thread tension adjustment is performed by the user. Since the set thread tension value is also displayed on the thread tension setting display / key 28, the thread tension can be set more easily and reliably. In addition, since the standard thread tension is automatically set initially by selecting the stitch form, the thread tension setting can be omitted if there is no problem in the automatic setting. Further, since the thread groove 7 corresponding to the color of the used tool is indicated by the LED 6 according to the selected stitch form, the user can surely know the thread path to be used. Further, since the thread type suitable for the device is also displayed, there is an effect that the selection of the thread can be easily performed.

As described above, according to the overlock sewing machine of the present invention, there is an effect that operations such as setting of a thread tension can be performed clearly and easily in relation to a tool to be used.

[Brief description of the drawings]

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

FIG. 2 is an external perspective view showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram of an example of a display unit 16 showing one embodiment of the present invention.

FIG. 4 is an explanatory diagram of another example of the display unit 16 showing one embodiment of the present invention.

FIG. 5 is an explanatory diagram of another example of the display unit 16 showing one embodiment of the present invention.

FIG. 6 is an explanatory diagram of still another example of the display unit 16 showing one embodiment of the present invention.

FIG. 7 is a flowchart showing an embodiment of the present invention.

[Explanation of symbols]

1: Needle, 2: Upper looper, 3: Lower looper, 4: Double looper, 5: Thread tensioner, 6: LED, 7: Thread groove, 10: Setting controller, 11: Actuator, 12: Thread tension Control device, 13: actuator, 14: yarn path instruction control device,
15: display control device, 16: display unit, 17: operation unit, 2
0: Touch panel, 21: Stitch form display / key, 2
2: next screen designation display / key, 23: selected stitch form display, 24: automatic thread tension display, 25: manual thread tension selection key, 26: thread type designation display, 27: instrument display, 2
8: thread tension setting display / key, 29: feed amount display, 2
9 ': differential amount display, 30: display data storage device, 31:
Stitch form data storage device, 32: operation content determination device,
33: Thread tension setting data storage device, 34: Thread tension setting data generation device, 35: Thread path designating device, 36: Thread type designation device, 40: Sewing width switching key, 41: Thread tension numerical value display, 5
0: CPU, 51: program storage device, 52: temporary storage device, 53: sewing machine motor drive circuit, 54: sewing machine motor, 55: seam forming mechanism, 56: rotation sensor, 5
7: S / S key, 58: speed controller.

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[Procedure amendment]

[Submission date] August 1, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (4)

[Claims] 1. A plurality of instruments for forming a seam configuration, a plurality of thread paths for threads led to the respective instruments, and a plurality of threads for adjusting respective tensions applied to the threads led to the respective instruments. A plurality of thread tensioners; and an overlock sewing machine comprising: a means for selecting a stitch configuration; a key for setting a thread tension of a thread tensioner corresponding to each device; and a key set by the key. Means for driving a corresponding thread tensioner based on the thread tension; and means for activating only the key corresponding to the instrument for forming the stitch configuration selected by the means for selecting. An overlock sewing machine comprising: a device for forming a stitch configuration selected by the selecting device; and a device for displaying a correspondence between a key corresponding to the device and the device. 2. A means for storing thread tension setting data corresponding to a stitch configuration, and a thread tensioner corresponding to a selected stitch configuration, based on the thread tension setting data from the storage means. The overlock sewing machine according to claim 1, further comprising: means for driving. 3. The overlock according to claim 1, further comprising: means for displaying a numerical value of a thread tension set by a key for setting the thread tension in association with the selected instrument. sewing machine. 4. The overlock sewing machine according to claim 1, further comprising: means for indicating a thread path corresponding to the selected stitch configuration in the vicinity of the thread path.