JPS6215034Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sewing and shearing presser foot that is mainly used when sewing and folding multiple pieces of fabric on an industrial sewing machine.

Normally, when shearing, a grooved shearing foot is widely used.

However, when sewing fabrics with this presser foot, the thickness of the groove is constant, so it is loose for thin fabrics and hard for thick fabrics, and because the presser foot is simply stuffed into the groove and sewn, the sewn fabric may float up. This results in an unstable situation.

The present invention is intended to eliminate this drawback, and one embodiment thereof will be described with reference to the drawings.As shown in Figs. The presser foot 30 is divided into a main body 1, a fabric presser plate 2 portion extending horizontally from the tip of the main body, and a shearing presser plate 3 portion with needle holes 50 located in contact with the upper surface of the fabric presser plate 2, The presser plate 3 can be freely swung up and down with the pin 4 to the main body 1.
hole 3 provided on the top surface of the holding plate 3.
A compression coil spring 6 is disposed in part A, and a male screw 5 is screwed into a female screw screwed at a proper place in the main body 1 so as to press the compression coil spring 6 from above. By pressing the upper fabric K' inserted between the lower surfaces of the presser plate 3 in an arbitrarily adjustable state, the sewn fabric K is pressed from the intermediate portion 7 between the fabric presser plate 2 and the shearing presser plate 3. Once inserted, the presser plate 3 is appropriately pressed by the compression coil spring 6, so that stable sewing is possible regardless of whether the fabric to be sewn is thin or thick.

In other words, the pleating space 10 is pressed against the fabric presser plate 2 and is formed on the lower surface of the presser plate 3 by the feed dog B of the sewing machine M.
The lower cloth K fed out to 0 is warped and folds easily, and this is sewn together with the upper cloth K' inserted from the middle part 7 with the sewing machine needle C, creating pleats in the lower cloth K. topstitching
Since K' is fed out by indirectly receiving the feeding force sent by the feed dog B of the lower cloth K, in this case, if the elastic force of the spring 6 is strengthened and the pressing force of the presser plate 3 is increased, the upper cloth The feeding force of K' is limited and more folds are produced in the lower cloth K. Therefore, by rotating the compression coil spring 5 and changing the pressing force of the presser plate 3 via the compression coil spring 6, Even fabrics of different thickness can be folded into the desired pleats with an appropriate pressing force.

Also, according to the presser foot 40 of the second embodiment of the present invention, the third
As shown in FIGS. 4 and 4, the groove 8 of a conventionally known normal-shaped shearing presser foot 40 is provided wide vertically, and a leaf spring 9 is fixed in the groove 8 with a screw 10. 9 is screwed into the shearing presser foot 40 in place so as to press the top surface of the leaf spring 9 with the adjustment screw 11 through which the compression coil spring 20 is inserted.
1 to adjust the force pressing down on the leaf spring 9, and this structure also has the same effect of use as described above.

That is, by inserting the upper cloth K' between the cloth presser plate 2 and the leaf spring 9, and pressing the lower cloth K with the cloth presser plate 2 and sewing it, the cloth can be pleated in the same way as in the previous embodiment.

In the above two examples, increasing the spring force increases the pressing force on the cloth, and therefore the amount of shearing. Depending on the fabric used, and by increasing or decreasing the amount of shearing, the strength of the spring force can be adjusted arbitrarily. It can be adjusted and used.

Note that the lower material K for shearing is inserted under the material holding plate 2, and it is of course possible to shear only the material for frills in the above two examples.

If the features of the sewing and shearing presser foot of the present invention are described here, it is possible to sew the seamed fabric in the same manner as in ordinary lockstitching without causing it to float up.

By increasing the force of the spring during sewing, it is possible to shear thick or hard fabrics that are difficult to gather with a regular grooved shearing foot.

The above features are the features of the present invention, and by having the above configuration, it is possible to provide a sewing and shearing presser foot that can suitably sew and shear any fabric.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the first embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a perspective view of the second embodiment of the present invention.
Fig. 4 is a side view of the same, and Fig. 5 is a perspective view of the sewing machine equipped with the present invention. 6 is a compression coil spring, 8 is a groove, 10 is a screw, 11 is an adjustment screw, 20 is a compression coil spring, 30 and 40 are the shearing press plate main bodies, 100 is a pleating space, M is a sewing machine, A is a presser bar, B is the feed dog, K′ is the upper cloth,
C indicates the sewing machine needle, and K indicates the lower fabric.

Claims (1)

[Claims for Utility Model Registration] (1) A sewing shearing presser foot that is removably attachable to the presser bar of a sewing machine and is approximately L-shaped, and is formed so as to extend horizontally at intervals on the lower side near the tip of the presser foot body. A dough pressing plate is provided, and a means for pressing the dough placed on the dough pressing plate is provided above the dough pressing plate, and the means for pressing the dough can be adjusted so that it is pressed with an appropriate pressing force. A sewn shearling presser foot with a unique structure. (2) The means for pressing the fabric is to use a compression coil spring to press the top surface of a presser plate with a needle hole, which is pivotably supported on the body of the sewing shearing presser foot so that it can swing up and down, and to apply the pressing force of the compression coil spring. The sewing and shearing presser foot according to claim 1, wherein the sewing and shearing presser foot has a structure that can be changed by a screw screwed into a proper position of the sewing and shearing presser foot body. (3) Utility model registration claim 1, characterized in that the means for pressing the dough consists of a leaf spring located above the dough holding plate, and has a structure in which the upper surface of the leaf spring is variable in pressure with a screw. Sewing shearing presser foot as described.