JPS6020997Y2 - Cloth waste transfer device for overlock sewing machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cloth scrap transfer device for conveying cut-off cloth scraps downward in an overlock sewing machine.

Conventionally, as shown in FIG. 1, an opening 2b (FIG. 2) that allows the main body of an overlock sewing machine 1 to be fitted to a table 2 is provided.
In addition, a pedestal 4 having a supporting surface parallel to the table 2 and facing below the opening 2b is provided, and this pedestal 4
The overlock stitch sewing machine 1 was placed on the support surface of the cloth base 6 with the top surface of the table 2 almost aligned with each other. Since the looper cover 7 on the front side of the overlock stitch sewing machine 1 cannot be opened or closed because it is lower than the top surface of the table 2, an opening 2b is opened in the front part of the table 2 facing the front of the looper cover 7. As shown in FIG. 2, a gap A is provided in this opening 2a between the front surface of the machine frame and the inner surface 3b of the overlock sewing machine 1, and the opening 2a is opened and closed by a screw 3a. When opening and closing the looper cover 7, open the lid 3 as shown in the two-dot chain line in Fig. A gutter body 1 facing below the cloth cutting knife 5 and having its lower end communicated with a dust box (not shown) placed on the side below the table 2
0, fit the upper part into the gap A, and use the cloth cutting knife 5.
The cloth scraps cut off by the above method were dropped into the dust box through the gutter body 10 and accumulated.

By the way, in order to facilitate pedal operation by the operator of the overlock sewing machine 1, the starting pedal 8 and the presser foot lifting pedal 9 must be placed almost directly below the cloth base 6, and this gutter body 10 is Since it is necessary to securely place the cloth cutting knife 5 on the pedestal 4 below so as not to interfere with the opening/closing operations of the lid body 3 and the looper cover 7, the position of the gutter body 10 is lowered, and the starting pedal 8 and presser foot lifting pedal 9 are lowered. A drawback has arisen in that the worker's knees come into contact with the gutter body 10 during operation, which hinders the operation.

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

Hereinafter, the same numbers as those shown in FIGS. 1 and 2 will be given the same numbers, and the explanation will be omitted. To explain the embodiment of the present invention with reference to the drawings, the gutter body 10 having a U-shaped longitudinal section has a bottom surface. An inverted-shaped hole 13 is formed at the upper end of the guide frame 10a, and the guide frame 11, which has a U-shaped vertical section and which fits into the gutter body 10 so as to be able to protrude and retract upward from the upper end of the gutter body 10, has a hole 13 formed at its bottom surface 11a. , a pair of protrusions 11b and llc that can be fitted into the hole 13 of the gutter body 10 are provided vertically apart from each other.

The guide frame 11 has an upper protrusion 11b and a bottom surface 10a of the gutter body 10.
When the protrusion 11b is fitted into the engaging portion 13a of the hole 13, the guide frame 11 is moved to the state shown in FIG. 6 by the action force of the spring 12. (raised position), and by moving the guide frame 11 to the right from the state shown in FIG.
It is configured to descend to the state shown in the figure (lowered position).

The gutter body 10 extends from one side (
3), and when the guide frame 11 is in the raised position, that is, when the protrusion 11b is fitted into the engaging part 13a of the hole 13 and locked, the upper end of the guide frame 11 is The gutter body 10 is closely opposed to the lower part of the cutting knife 5, and is inclined so that the lower end of the gutter body 10 is located to the right (Fig. 1) than its upper end, and its upper end surface is parallel to the pedestal 4 and the height thereof is the same. The gutter body 10 is fixed to the pedestal 4 in such a manner.

In this way, when the guide frame 11 moves to the lowered position, the upper end of the guide frame 11 is lowered from the position facing the front surface of the looper cover 7 (FIG. 4).

The upper end surfaces of the gutter body 10 and the guide frame 11 are respectively formed to be parallel to the lower surface of the table 2, and the side edge 11e of the guide frame 11 on the side facing the looper cover 7 moves the guide frame 11 to the raised position. It has a cutout shape that is parallel to the surface of the looper cover 7 when it is pulled up.

This invention has the above-mentioned configuration, and when sewing, the guide frame 11 is pulled up to bring the side edge lie into contact with the looper cover 7, the protrusion 11b is fitted into the engaging portion 13a, and the guide frame 11 is brought into contact with the looper cover 7.
1 in the raised position (Figure 3).

In this way, when the presser foot lifting pedal 9 is operated to place the fabric on the fabric base 6, and the starting pedal 8 is then operated to start sewing, the fabric cutting knife 5 moves up and down in conjunction with the main shaft, and the edge of the fabric is is cut off, and the cut off cloth scraps fall onto the upper end of the guide frame 11 and are transferred from the guide frame 11 to the gutter body 10.
It is housed in a dust box (not shown) located below the dust box.

Furthermore, when it is necessary to adjust the looper, pull the guide frame 11 toward you (to the right in FIG. 6) to disengage the retaining portion 13b and the protrusion 11b (FIG. 7). Guide frame 1
1 is moved to the lowered position by the tension of the spring 12 and its own weight.

Then, as shown in FIG. 3, the guide frame 11 descends below the looper cover 7, so that the looper cover 7 can be opened and closed by opening the lid 3.

As described above, according to this invention, in an overlock sewing machine in which the cloth table and the top surface of the table are almost aligned, a guide frame that communicates with the upper end of the gutter body by opening the upper and lower ends is connected to the gutter body and the cloth cutting machine. Since the support is movable between an elevated position communicating with the lower part of the knife and a position lowered from the elevated position and below the looper cover, the looper cover can be opened and closed by moving the guide frame to the lowered position when necessary. In addition, by communicating between the guide frame and the lower part of the cloth cutting knife, the gutter body can be moved and fixed to a side position where the knees do not touch when operating the pedals, improving work efficiency. There is.

In the above embodiment, a protrusion is provided on the guide frame, and the guide frame is held in the raised position by fitting this protrusion into an inverted hole formed in the gutter body. For example, the guide frame may be screwed to the raised position, or any other coupling means may be adopted, and the guide frame may be detachable from the gutter body. good.

[Brief explanation of the drawing]

Figure 1 is a diagram of an overlock stitch sewing machine equipped with a conventional cloth scrap transfer device, Figure 2 is a perspective view of the head of the overcut stitch sewing machine protruding from the table, and Figure 3 is a cloth scrap transfer device of this invention. Figure 4 shows the looper cover being opened and closed, Figure 5 shows the configuration of attaching the guide frame to the gutter body, and Figures 6 and 7 show how the guide frame is raised. It is a figure of a position and a descending position.

Claims (1)

[Claims for Utility Model Registration] A cloth table 6 having a flat surface on the same plane as the throat plate so that the cloth can be placed horizontally, and a cloth edge on one side of the cloth feeding line that moves with the main shaft and passes through the sewing point. A sewing machine having a cloth cutting knife 5 that moves up and down to cut the cloth, and a sewing mechanism that operates in conjunction with a main shaft to feed the cloth and form an overlock stitch on the cut edge while cutting. 1, a table 2 in the form of an opening 2b into which the main body of the sewing machine is fitted, and an opening 2a opening on the front side in the cloth feeding direction of the sewing machine.
and a cover body 3 supported on the table so as to be movable between one position where the opening of the table is opened and the other position where the opening is closed; A pedestal 4 fixed to the underside of the table, a pedal 8 placed below the sewing machine that can be operated by foot,
9, the upper end is located above the pedal on one side in the horizontal direction and is located substantially on the same plane as the pedestal, the lower end is arranged further away from the pedal to one side than the upper end, and the upper and lower ends are communicated. The gutter body 10 is open and fixed to a pedestal, and the upper and lower ends thereof are opened and communicated with each other, and the lower end is supported by the gutter body so as to communicate with the upper end of the gutter body, and the upper end of the gutter body is raised to face the lower part of the cloth cutting knife. Guide frame 1 that is movable along the gutter body to a lower position and a lowered position where it is lowered to approximately the same plane as the pedestal.
1; and holding means provided on the guide frame and the gutter body or the machine frame so as to be able to hold the guide frame in a raised position.