JPH051472U - Overlock sewing machine thread take-up indicator - Google Patents

Abstract

(57) [Abstract] [Purpose] In this invention, a position indicator is provided on the thread take-up portion of an overlock sewing machine capable of sewing multiple types of sewing machines so that the thread can be attached to an appropriate thread balance. It is a thing. According to the present invention, in an overlock sewing machine capable of sewing a plurality of types of sewing machines, a stitch switching dial, a thread take-up hook portion, and a position display portion provided at the thread take-up thread portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thread take-up instruction device for an overlock sewing machine.

[0002]

[Prior Art]

 Conventionally, the stitch switching dial 1 is used to connect and disconnect the looper to the swing shaft, change the sewing machine movement, and other types of sewing such as two-needle, four-thread overlock sewing and double chain stitching. In a sewing machine in which one machine can be selected, the loosening amount and the picked-up amount of the needle thread differ depending on the types of stitches, so this type of sewing machine is equipped with multiple types of balances and selected. An appropriate seam cannot be formed unless the needle thread is hung on the balance adapted to the seam.

Therefore, in this type of conventional sewing machine, the thread hooking path corresponding to the selected stitch is colored on a part of the thread take-up cover 2 or the thread path is drawn on the back side of the looper cover 7. I used to stick stickers to recognize the thread route.

[0004]

[Problems to be solved by the device]

 When you change the type of seam and hang the thread on the balance that corresponds to the seam, the thread is hung on the part of the balance that is colored or on the back of the looper cover with the sticker that depicts the thread path. Was aware. However, since there are several types of thread paths on the sticker, it is easy to make a mistake in the thread path.Therefore, if you use the wrong thread balance, you will not be able to form the desired seams, and the sewing operation will be interrupted, resulting in increased work efficiency. There was a problem of lowering.

[0005]

[Means for Solving the Problems]

 In the sewing machine in which multiple types of sewing such as two-needle, four-thread overlock sewing and double chain stitch can be selected by one machine with the stitch switching dial, a balance thread hooking instruction device is provided near the thread hook , In response to the seam changeover dial operation, instruct the balance corresponding to the seam selected by the changeover dial.

[0006]

[Action]

 When a specific stitch is selected by turning the stitch switching dial, the thread take-up instruction device provided near the thread take-up thread corresponding to the stitch indicates the thread take-up thread.

[0007]

【Example】

 Fig. 1 is an external view of an overlock sewing machine. This overlock sewing machine performs multiple types of sewing such as 2-needle 4-thread overlock sewing, 1-needle 2-thread overlock sewing, and double chain stitch. be able to. In the figure, 1 is a stitch switching dial for changing the type of sewing. 2 is a thread take-up hook for hanging a thread supplied from a thread supply source (not shown).

FIG. 2 shows the seam switching dial 1 and the front cover 4 of the overlock sewing machine. Letters indicating the type of sewing are drawn on the front cover 4 and a lamp 7 is attached. FIG. 3 shows the thread take-up portion of the overlock sewing machine. In the figure, 2 is a thread take-up thread and 2a is a thread take-up balance for double chain stitches that also serves as a cover for a double chain stitch balance (not shown). The thread hook 2b is an overlock thread hook which also serves as a cover for an overlock sewing thread balance (not shown). 3 is a thread take-up instruction device provided on the sewing machine frame, 3a is a lamp provided at the tip of the thread take-up thread hook 2a for double chain stitch, which lights up when double chain stitch is selected, Reference numeral 3b is a lamp provided at the tip of the overlock thread take-up hook 2b, which lights up when overlock sewing is selected.

When changing the type of sewing, for example, when performing overlock sewing, the stitch switching dial 1 is turned so that the arrow 1a indicates the overlock character drawn on the front cover 4. Then, the transmitter 5 provided in the stitch switching dial 1 emits a signal. This is received by the control device 6 provided inside the sewing machine, the type of sewing is discriminated by the signal at this time, and the lamp 3b indicating overlock sewing is turned on.

From this, it can be understood that the operator can hang the thread on the overlock thread take-up hook 2b shown in FIG. When hooking the thread, thread the thread from the bobbin (not shown) along the outer circumference from the tip of the protruding portion of the double-stitching balance thread hook 2a or the overlock balance thread hook 2b. The thread is wound on a balance (not shown) arranged inside the double loop sewing thread take-up 2a or the overlock thread take-up 2b.

[0011]

【effect】

 With this device, the operator can recognize at a glance which scale to hang the thread on, the thread can be hooked correctly, and the selected seam can always be reliably formed. Since it is good, work time is reduced and work efficiency is improved.

[Brief description of drawings]

Fig. 1 External view of overlock sewing machine

[Fig.2] Detailed view of the stitch switching dial

[Fig. 3] Detailed view of the balance

FIG. 4 Block diagram

[Simple explanation of symbols]

 1 stitch switching dial 2 thread take-up hook 3 thread take-up thread position indicator 4 front cover 5 transmitter 6 controller 7 lamp

Claims (1)

[Claims for utility model registration] [Claim 1] A balance in a sewing machine in which a plurality of types of sewing such as two-needle, four-thread overlock sewing and double chain stitch can be selected by one machine by a stitch switching dial. A thread take-up instruction device for an overlock sewing machine, which is provided in the vicinity of a thread hook or the like, and instructs a balance corresponding to a stitch selected by the change dial in response to a stitch change dial operation.