JPS6020993Y2 - Empty ring presser for overlock sewing machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an empty ring presser for overlock sewing machines.

Conventionally, as shown in FIG. 1, the ring presser foot R of an overlock sewing machine has a ring feed dog 4 which is rotatably supported at the rear of the presser foot 1 and moves in a feed hole 3 opened in the throat plate 2. The empty ring 5 is sent out to the rear of the empty ring presser R in cooperation with the empty ring presser R.

However, since the back surface of this ring presser R that is in contact with the ring 5 is a smooth surface, the ring 5 easily comes off from below the ring presser R, and the ring 5 is moved between the ring feed dog 4 and the feed hole. If the ring gets stuck between the
Furthermore, there was a risk that the empty ring would be cut.

The purpose of this invention is to eliminate the above-mentioned conventional drawbacks with a simple configuration.

An embodiment of this invention will be described below with reference to FIG.

Note that the same components as in the conventional example are denoted by the same reference numerals, so detailed explanations will be omitted.

FIG. 2 shows the bottom of the ring presser 6 of this invention, which is rotatably supported behind the presser foot 1.

Several guide grooves 7, 7, . . . are formed along the cloth feeding direction on the bottom surface of the empty ring presser 6 that is in contact with the empty ring 5, so that the empty ring 5 can be held securely along the cloth feeding direction. It is designed to guide you.

Next, the operation of this invention will be explained.

When the sewing machine is started, an empty ring 5 is formed from the needle hole 8, and this empty ring 5 is sent out to the rear of the empty ring presser 6 by the cooperation of the feed dog 4 and the empty ring presser 6.

Since a guide groove 7 is formed in the empty ring presser 6 along the cloth feeding direction, a part of the empty ring enters into this guide groove 7, so that the empty ring 5 can move while being regulated by the guide groove 7. As a result, the cloth is reliably fed out along the cloth feeding direction.

As described above, according to this invention, a plurality of guide grooves along the cloth feeding direction are formed on the bottom surface of the hollow ring presser, so that the hollow ring can move along the cloth feeding direction without coming off from below the hollow ring presser. The effect is that the empty ring presser can be reliably fed to the rear.

[Brief explanation of the drawing]

FIG. 1 is a front view of a cloth presser to which a conventional ring presser is attached, and FIG. 2 is a perspective view of the ring presser of this invention. 4...Feed dog, 5...Empty ring, 6...
... Empty ring presser, 7... Guide groove.

Claims (1)

[Scope of Claim for Utility Model Registration] A presser foot that is vertically movably supported on the machine frame so that it can come into contact with and separate from the upper surface of the throat plate, and a feed hole that is opened in the throat plate opposite to the presser foot that cooperates with the presser foot. The empty ring feed dog that moves the empty ring along the cloth feeding direction, and the empty ring presser supported on the presser foot opposite to the empty ring feed dog, and the empty ring of the empty ring presser. An empty ring press for an overlock sewing machine, characterized in that a plurality of guide grooves parallel to the cloth feeding direction are formed on a surface facing the feed dog.