JP2588425Y2 - Overlock sewing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overlock sewing machine, and more particularly to an overlock sewing machine having a selection switching means corresponding to a plurality of stitch types.

[0002]

2. Description of the Related Art An overlock sewing machine using a plurality of sewing threads can perform sewing in various stitch styles (eg, overlock sewing, full winding sewing, decorative sewing, etc.).

In such an overlock sewing machine, since it is necessary to adjust the tension of each thread according to the type of thread and the stitch style, a thread tension unit is provided for each thread.

In order to facilitate the adjustment of the yarn tension, for example, a tension conversion means capable of simultaneously adjusting the tension of each yarn as disclosed in Japanese Patent Application Laid-Open No. 2-255176 can be used.

[0005]

In the above-described overlock sewing machine, it is necessary to perform not only the tension of each thread but also various adjustments and settings in accordance with various stitch styles.

For example, in the case of a two-needle, four-thread overlock sewing machine, one needle may be used or two needles may be used depending on the stitch style. Furthermore, the number of yarns used varies from two to four. Therefore, it is necessary to attach and detach the needle to and from the needle bar according to the stitch style. Further, it is necessary to pass the yarn along the yarn path from the yarn supply source to the needle or the looper. In the case of the double thread stitch style, it is necessary to attach a detachable attachment to the looper support member and perform sewing. Further, it may be necessary to adjust the overhang width.

Such various adjustments and settings are performed one by one with reference to the manual of the overlock sewing machine. For this reason, not only is it complicated and requires a considerable amount of time, but also if adjustments and settings are impossible if the user loses the instructions before the user is skilled in the work.

An object of the present invention is to provide an overlock sewing machine capable of performing the above-mentioned adjustment and setting immediately without referring to a manual.

[0009]

According to the present invention, there is provided an overlock sewing machine comprising: a selection unit having a plurality of selection modes corresponding to a stitch style; a selection mode for displaying the selection mode selected by the selection unit; A setting information illustration display section for displaying the setting information of the sewing machine necessary according to the stitch style.

It is preferable that a stitch style illustration display section is provided which displays the illustrations of the plurality of stitch styles in accordance with the selection mode of the selection means and the setting information of the setting information illustration display section.

Further, it is preferable to provide a waste box which is detachably attached to the main body and accommodates thread waste generated during sewing, and the seam style illustration display section is provided in the waste box.

[0012]

In the case of the overlock sewing machine according to claim 1,
By referring to the setting information in the setting information illustration display section, you can immediately know the various setting methods of the sewing machine, such as whether or not a needle, thread and attachment to be used, and whether or not to adjust the overlock width. After performing the setting and setting the desired selection mode by the selection means, sewing is performed.

Therefore, if the correspondence between the setting information / selection mode and the stitch style is known in advance, various settings can be made quickly without a manual.

In the case of the overlock sewing machine according to the second and third aspects, the correspondence between the desired stitch style and the setting information / selection mode of the setting information illustration display section is first referred to by referring to the stitch style illustration display section. I understand the relationship. Therefore, various settings can be made more quickly.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is applied to a two-needle, four-thread overlock sewing machine. In the figure, the main body 6 of the overlock sewing machine 2 is covered by a main body case 8 and a lower cover 10. A needle bar 14 is provided on the main body 6 so as to be vertically movable, and two needles 16 </ b> A,
16B is fixed.

The overlock sewing machine 2 of this embodiment is of the type of a two-needle, four-thread type. Each of the threads is formed by a slot 18, 2 formed in a main body case 8 from a thread supply source (not shown).
It passes through the thread tension unit provided inside the main body case 8 through 0, 22, and 24. The yarn supply source and the yarn tension unit are provided for each yarn.

Reference numeral 26 denotes a stitch selection dial. By rotating the stitch selection dial 26, the tension of each thread can be changed simultaneously. This stitch selection dial 2
6 has a plurality of setting modes A to E depending on the rotation angle.

Each thread tension unit has two thread tension discs and a thread tension axis through which the thread tension discs pass, and passes a thread between the two thread tension discs. A conversion cam is slidably mounted on the thread tension shaft in the axial direction. Also, the stitch selection dial 2
Reference numeral 6 is fixed to a conversion shaft (not shown).

The shape of the cam surface of the conversion cam is such that the tension of each thread becomes an appropriate value according to the stitch style or the type of thread to be used as the stitch selection dial 26 rotates.

Each thread tension unit has a thread tension dial 28, 30, 32, 34, respectively. The thread tension dials 28 to 34 are for individually adjusting the tension of each thread.

On the front surface of the main body case 8 near the stitch selection dial 26, a selection mode display section 38 and a setting information illustration display section 42 are provided. Also, the lower cover 1
0 is a cloth waste receiving box 50 for storing waste generated during sewing.
Are provided detachably. FIG. 2 is a diagram showing the stitch selection dial 26, the selection mode display section 38, and the setting information illustration display section 42.

The selection mode display section 38 has LEDs (light emitting diodes) 38A to 38E which blink in accordance with the selection modes A to E of the stitch selection dial. Also, to the right of each LED, symbols A to E are displayed corresponding to the selection modes A to E.

The setting information illustration display section 42 is provided near the selection mode display section 38, and the setting information illustration display section 42 displays necessary setting information of the sewing machine according to the stitch style.

The setting information illustration display section 42 displays a plurality of illustrations (10 rows vertically and 5 rows each in the illustrated example) in the vertical and horizontal directions, and the five illustrations in each row are displayed. Represents a set of setting information.

A number is displayed on the left of each setting information in the setting information illustration display section 42. That is, a numeral 1 is displayed on the left side of the setting information illustration displayed on the top of the setting information illustration display section 42, and a numeral 2 is displayed on the left of the setting information displayed on the second line. Have been.

In the illustrated example, all of the setting information in the uppermost to sixth rows correspond to the LED 38A. That is, in the case of the selection mode A, any of the setting information of the uppermost to sixth rows can be set.

Also, the numbers 1-6 are displayed on the left of the illustration of the setting information corresponding to the LED 38B.
This means that even in the selection mode B, any of the setting information of the first to sixth steps can be set.

The difference between the selection mode A and the selection mode B is that
Only the type of yarn to be used is different. For example, the selection mode A uses a normal yarn, and the selection mode B uses a special yarn, so that it is necessary to change the tension of the yarn.

In the case of the selection modes C to E, the eighth to tenth rows (numbers 7 to 9 displayed to the left of the setting information)
(Corresponding to.) Is in a one-to-one correspondence.

The setting information illustration display section 42 displays, in order from the left, a left hand display section 42A indicating whether or not the left hand 16A is used.
A right needle display section 42B indicating whether the right needle 16B is used, an upper looper thread display section 42C indicating whether the upper looper thread is used, a lower looper thread display section 42D indicating whether the lower looper thread is used,
An overlock width adjustment display section 42E representing the overlock width adjustment information is provided.

When the left hand 16A is used, the left hand display section 42
A displays a rectangular illustration imitating the shape of a needle, and a small circular illustration is displayed when not used. The same applies to the case of the right hand 16B. When either the left needle 16A or the right needle 16B may be used in the single needle stitching style, a small circle is added to the lower end of the rectangular illustration of the left needle display section 42A, and the right needle display is performed. A small circle is added to the upper end of the rectangular illustration of the part 42B.

When the upper looper thread is used, a large circular illustration is displayed on the upper looper thread display section 42C. If not used, an illustration is displayed that simulates the shape of the attachment attached to the upper looper support member. Since the lower looper thread is always used, a large circular illustration is displayed on each of the upper and lower stages of the lower looper thread display section 42D.

A triangle (幅) and inverted triangle (▼) illustrations are displayed on the overlock width adjustment display section 42E. The triangular shape means that the overlock width adjustment knob (not shown) provided on the needle plate 12 is pushed in, and the inverted triangle shape means that the overlock width adjustment knob is pulled. Note that an illustration 44 of the needle plate 12 and an illustration 46 of the overlock width adjustment knob are displayed below the overlock width adjustment display section 42E together with a triangular (▲) and inverted triangular (▼) illustration 48. Easy to operate. The illustrations of the thread display sections 42A to 42D described above are given different colors.

The lower cover 10 is detachably attached to the main body 6, and when the lower cover 10 is opened, a panel having a yarn path illustration display section displaying the yarn paths is exposed.

The yarn path from the yarn supply source to the needle or the looper is displayed in a different color for each yarn in the yarn path illustration display section. The colors are applied in correspondence with the colors of the illustrations of the thread display sections 42A to 42D. Therefore, the operator operates each yarn display section 42A.
By comparing the illustrations of .about.42D with the illustrations of the yarn path illustration display section, the yarn path can be easily set. FIG. 3 is a front view of the cloth waste receiving box 50.

A stitch style illustration display section 52 for displaying a plurality of stitch style illustrations is provided on the cloth waste receiving box 50. Alphabet letters A to E are displayed below the stitch style illustrations in correspondence with the selection modes A to E of the stitch selection dial. Further, numbers 1 to 9 corresponding to the setting information of each stage of the setting information illustration display section 42 are displayed above the illustration of each stitch style. FIG.
4A is a rear view of the cloth waste receiving box 50, and FIG. 4B is a side view.

Three engaging projections 54 are provided on the back surface of the dust receiving box 50. The engaging projections 54 and the lower cover 1 are provided.
By engaging with an engaging portion (not shown) provided on the lower cover 10, it can be easily attached to the lower cover 10.

To perform sewing using the above-described embodiment, referring to the stitch style illustration display section 52 of the cloth waste receiving box 50, sewing is performed from alphabets and numerals corresponding to illustrations of a desired stitch style. The selection mode and setting information of the eye selection dial 26 are determined.

Assuming that the number corresponding to the stitch type in the stitch style illustration display section 52 is, for example, 3, the setting information in the third row of the setting information illustration display section 42 is referred to. As a result, the presence / absence of the needle, thread, and attachment to be used, and the necessity of the adjustment by the overlock width adjustment knob can be immediately determined, so necessary settings are made, and the stitch selection dial 26 is rotated to set the above selection mode. Then, sewing is performed.

Therefore, various adjustments and settings can be performed easily and quickly. In addition, even if the manual is lost, it can be quickly adjusted and set. Although the present invention has been described based on the embodiment shown in the drawings, the present invention is not limited to this embodiment and can be variously modified.

For example, an example in which various stitch styles are illustrated and displayed on the cloth waste receiving box 50 has been described. However, stitch styles can also be directly illustrated on the lower cover 10 or the main body case 8.

Further, the selection mode display section 38 is provided with a plurality of LEs.
Although the example constituted by D is shown, the invention is not limited to this, and any device that can display the selection mode may be used. For example, a sheet that moves with the rotation of the stitch selection dial 26 and a cover that covers the sheet are provided, a selection mode display window is formed on the cover, and letters or numbers indicating the selection mode are displayed on the sheet at appropriate intervals. By displaying with, the selected mode can be displayed on the display window. In addition, not only characters such as alphabets and numbers, but also selection modes can be displayed according to colors.

Further, although an example is shown in which the illustrations of the thread display portions 42A to 42D are given different colors, they may be all the same color (for example, black).

[0044]

According to the present invention, there is provided an overlock sewing machine capable of performing various settings according to a stitch style without referring to a manual.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment in which the present invention is applied to a two-needle, four-thread overlock sewing machine.

FIG. 2 is a diagram showing a stitch selection dial and a display unit.

FIG. 3 is a front view of a trash receptacle having a stitch style illustration display section.

FIG. 4A is a rear view of a waste container, and FIG. 4B is a side view of the waste container.

[Explanation of symbols]

 2 Overlock sewing machine 6 Main body 8 Main case 10 Lower cover 12 Needle plate 14 Needle bar 16A Left needle 16B Right needle 18, 20, 22, 24 Slot 26 Stitch selection dial 28-34 Thread tension dial 38 Selection mode display section 38A- 38E LED (Light Emitting Diode) 42 Setting Information Illustration Display 42A Left Hand Display 42B Right Hand Display 42C Upper Looper Thread Display 42D Lower Looper Thread Display 42E Overlock Width Adjustment Display 44 Needle Plate Illustration 46 Overlock Width Adjustment Knob Of 50 Cloth receiving box 52 Stitch style illustration display section 54 Engagement projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-67883 (JP, A) JP-A-1-139909 (JP, A) JP-A-58-1333075 (JP, U) JP-A-60- 3808 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) D05B 1/20

Claims (3)

(57) [Scope of request for utility model registration] 1. A selection means having a plurality of selection modes corresponding to a stitch style, a selection mode display section for displaying a selection mode selected by the selection means, and a sewing machine necessary for each stitch style. the setting information have a setting information illustration display unit that displays an illustration, the selection hand
There is a stitch style by selecting the selection mode by step
Or the thread tension is an appropriate value depending on the type of thread used
Overlock sewing machine characterized by being adjusted as follows. 2. A stitch style illustration display section which displays a plurality of stitch style illustrations in accordance with a selection mode of said selection means and setting information of said setting information illustration display section. Item 10. An overlock sewing machine according to item 1. 3. A sewing machine, comprising: a main body; and a waste box detachably attached to the main body, for storing lint generated during sewing, wherein the stitch style illustration display section is provided in the waste box. 3. The overlock sewing machine according to claim 2, wherein: