JPH0672579U - Cylinder overlock sewing machine - Google Patents

Abstract

(57) [Summary] [Purpose] Cylinder overlock The inside of the cylinder part of the sewing machine is kept free from dust. [Structure] A suction port 3a is opened in a cylinder bed portion S so that air is sucked from a duct 3 arranged in the machine frame of the sewing machine main body or in the casing 1 of the cylinder bed portion S.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cylinder overlock sewing machine that supports a tubular sewn object such as a sleeve on a cylinder bed portion on the left side and bends an end of the cylindrical overlock sewing machine.

[0002]

[Prior art]

 Cylinder overlock sewing machines have been widely known.

[0003]

[Problems to be solved by the device]

 Generally, in overlock, a large amount of dust is generated because the cloth edge is cut in the process of edging the tubular sewing object at a high speed. By the way, the cylinder overlock sewing machine is designed to have the outer diameter of the cylinder bed portion as small as possible in order to hang over a tubular sewn object with a small diameter such as the cuffs. The opening on the right side is also narrowed by the lower knife, its retainer, and the feed dog, and dust easily collects. If the dust accumulates below the needle plate, the loop of the needle thread may collapse, causing stitching defects such as stitch skipping, or interfering with the moving part, and in the worst case, breaking the parts. Therefore, it was necessary to blow air with an air gun and clean it every few hours.

An object of the present invention is to provide a cylinder overlock sewing machine capable of keeping the inside of the cylinder bed part free from dust and the like.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the cylinder overlock sewing machine of the present invention has a suction port opened in the cylinder bed portion and sucks air from a duct arranged in the machine frame of the sewing machine main body or the casing of the cylinder bed portion. It was done.

[0006]

[Work]

 In the cylinder overlock sewing machine configured as described above, air is sucked from the suction port that is opened near the lower knife, which is the source of dust, and the dust and debris are removed by the air flow toward the cylinder. It is discharged from the bed.

[0007]

【Example】

 A cylinder overlock sewing machine of the present invention will be described with reference to FIGS. 1 to 4.

A casing 1 provided with a cylinder bed portion S is fixed to a flat left end surface A1 of a machine frame A of this cylinder overlock sewing machine, and the casing 1 has a main feed dog 4, an auxiliary feed dog 5, and an immovable feed dog. The lower knife 6 and the like are accommodated in an accommodating portion 1a and an attaching portion 1b for attaching to the main body. A groove 2 extending upward and downward is formed at the center of the mounting portion 1b on the main body side. Then, the main feed dog 4, the sub feed dog 5, the stationary lower knife 6 and the like are housed in the housing portion 1a, the needle plate 7 is fixed on the upper portion thereof, and the lid 8 is attached to the side portion of the cylinder bed. Section S is constructed.

Above the cylinder bed S, an upper knife 9 is provided so as to be vertically swingable in cooperation with the immovable lower knife 6 to cut the cloth edge being overedged. In addition, 10 and 11 in FIG. 1 are a sewing needle and a lower looper, respectively.

A duct 3 is embedded in the groove 2 of the casing 1, and a suction port 3a at the upper end of the duct 3 is open in the housing portion 1a. On the other hand, an air tube 12 connected to an air suction device is connected to the lower end of the duct 3.

When the duct 3 is embedded in the groove 2 of the casing 1 in this way, the suction port 3a opens close to the lower knife 6, which is the source of dust, and sucks air from there. As a result, an airflow toward the airflow is generated, and the dust and cloth debris are discharged from the inside of the cylinder bed S by riding on the airflow.

In this cylinder overlock sewing machine, the obstacle is not exposed around the cylinder bed S and the duct 3 and the like do not interfere with other members, so that there is no problem in sewing. In addition, the opening position of the suction port 3a of the duct 3 is best below the root of the cylinder bed S, but in addition to this, the root of the cylinder bed S may be rearward in the cloth feeding direction as seen from the operator. Good. In this embodiment, the duct 3 is embedded in the groove 2 of the casing 1. However, the duct 3 may be embedded in the left end surface A 1 of the main machine frame A.

[0013]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

That is, it is possible to keep the inside of the cylinder bed portion free from dust and the like. Therefore, there is no possibility of causing defective stitching such as skipped stitches and breaking of parts as in the conventional case. In addition, since no obstacle is exposed around the cylinder bed and the duct does not interfere with other members, there is no problem in sewing.

[Brief description of drawings]

FIG. 1 is a front view of a cylinder overlock sewing machine of the present invention.

FIG. 2 is a left side view of the cylinder overlock sewing machine of the present invention.

FIG. 3 is a perspective view of a cylinder portion of a cylinder overlock sewing machine.

FIG. 4 is a perspective view of a cylinder bed portion of the cylinder overlock sewing machine of the present invention with a needle plate, a lid and the like removed.

[Explanation of symbols]

 S Cylinder bed part 1 Casing 1a Housing part 1b Mounting part 2 Groove 3 Duct 6 Lower female

Claims (3)

[Scope of utility model registration request] 1. A cylinder over having a cylinder bed portion projecting from a sewing machine main body, a duct having an upper end opened to the cylinder bed portion and a lower end connected to an intake source, the duct being disposed inside a machine frame. Lock sewing machine. 2. A sewing machine main body machine frame having a flat left end surface,
A casing having a cylinder bed portion protruding from the left end surface thereof and fixed to the main body frame, and a duct having an upper end opened to the cylinder bed portion and a lower end connected to an intake source are provided inside the casing or the main body machine. Cylinder overlock sewing machine arranged inside the frame. 3. The cylinder overlock sewing machine according to claim 2, wherein the groove in which the duct is disposed is formed in the casing or the main body frame.