JPH0314142Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a presser foot device for a cycle sewing machine, in particular,
This invention relates to a presser foot device for attaching a patch to the back of the crotch cross section of trousers.

[Prior art] Conventionally, in order to sew a thick to the back of the crotch of pants, the stitch is sewn to the body fabric using a lockstitch sewing machine so as to cover the cross stitched part of the back of the crotch of the body fabric. Ta.

[Problems to be solved] In order to sew the stitch to the back of the crotch cross of pants using a lockstitch sewing machine, position a long and thin stitch with both ends bent in an uneven place like the back of the crotch cross of pants. This is time consuming and has low productivity, and the problem is that the fabric of the pants has to be turned and sewn into a rectangular shape, and the worker needs to be highly skilled to sew. It was hot.

In addition, since the stitches are applied to the back of the crotch of the pants and stitched together, there is a problem in that the back of the seam appears on the surface of the crotch of the pants, making it difficult to see.

[Means for solving the problem] The present invention forms a notch that fits snugly in the center of the lower support plate, and also attaches a rotary plate to the center of the rotary plate whose base is rotatably pivoted on the lower support plate. When the free end overlaps the lower receiving plate, a notch is provided that roughly matches the notch in the lower receiving plate, and an elastic plate with a claw that protrudes into the notch in the lower receiving plate is inserted into the notch in the rotary plate. Provided at both ends of the notch.

Further, the upper holding plate is provided with a notch that substantially matches the notch of the rotary plate, and a pressing plate that projects downward is vertically provided around the notch.

Then, set a regular-sized chic in the notch of the lower receiving plate, cover it with a rotating plate, press both ends of the chic with the claws of the elastic plate, and place the pants on top of it with the back of the crotch cross section facing downward. The problem was solved by covering the rotating plate, lowering the upper presser plate, pressing the tip of the presser plate of the upper presser plate onto the throat plate so that the crotch cross of the pants and the thigh were in close contact with each other, and suturing. .

[Example] The present invention will be explained below based on examples.

FIG. 1 is a perspective view of a cycle sewing machine having a cloth presser according to the present invention, in which 1 is a sewing machine head, 2 is an upper presser plate, and a notch 2a extending in the cloth feeding direction is provided in the center. In addition, the notch 2a
As shown in FIG. 2, a downwardly protruding press plate 2b is screwed around the upper press plate 2, and a window 2c parallel to the notch 2a is provided near the base of the upper press plate 2.

Reference numeral 3 designates a lower support plate, which is provided with a notch 3a so that the tip of the press plate 2b of the upper support plate 2 is inserted when the upper support plate 2 is lowered, and a hinge 4 whose base is placed on the lower support plate 3. The rotary plate 5, which is rotatably pivotally connected by the rotary plate 5, has a notch that substantially coincides with the notch 3a of the lower receiving plate 3 when the free end of the rotating plate 5 overlaps the lower receiving plate 3, as shown in FIG. forming a notch 5a;
Elastic plates 6, 6 having claws 6a, 6a projecting into the notch 3a of the lower receiving plate 3 are provided on the lower surfaces of both ends of the notch 5a.

A magnet 7 is fixed to a recess 5b on the upper surface of the free end of the rotating plate 5.

In order to sew a stitch to the crotch cross section of pants using the presser foot device for attaching a stitch of a cycle sewing machine having the above configuration, first, the free end of the rotary plate 5 is rotated upward and the magnet 7 is attached to the upper presser plate 2. The rotary plate 5 is placed in an open state by adsorption to the lower surface of the rotary plate 5. Then, set a fixed-sized stick _S1 with both ends bent in the notch 3a of the lower support plate 3 with the bent part facing upward, and close the free end of the rotary plate 5 by rotating it, as shown in FIG. As shown, the claws 6a, 6a of the elastic plates 6, 6 press the bent portion of the chic _S1 . And the crotch cross of the pants
Place S ₂ with the back side facing down, cover the rotary plate 5, lower the upper presser plate 2, overlap the crotch cross section S ₂ of the pants and the chic S ₁ , and place them on the throat plate 8, as shown in Fig. 5. By pressing and sewing in a rectangular shape along the pressing plate 2b of the upper pressing plate 2, the chic _S1 is sewn to the crotch cross section _S2 of the pants. At this time, the base of the hinge 4 protrudes from the window 2c of the upper holding plate 2.

When sewing, the surface of the seam should be the crotch cross of the pants S ₂
Since it is formed on the surface, the stitch can be sewn to the crotch of the pants with a clean seam.

When the stitching is completed, the upper presser plate 2 is raised and the pants are taken out.

[Other Embodiments] As an embodiment of the present invention, the notch 2 of the upper holding plate 2
In the above example, the pressing plate 2b protruding downward is screwed to the upper surface of the periphery of the upper pressing plate 2, but the notch 2 of the upper pressing plate 2
A pressing plate may be fixed to the lower surface of the periphery of a, or a linear pressing member protruding downward may be used instead of the pressing plate.

As an embodiment of the present invention, the notch 5a of the rotating plate 5
In this example, elastic plates 6, 6 are fixed to the lower surface of the periphery of the rotary plate 5.
A recess may be provided on the upper surface of the periphery of a, and the elastic plates 6, 6 may be provided so as to protrude from the recess below the notch 5a.

Furthermore, although the present invention has been shown as being applied to a cycle sewing machine, it may also be applied to a zigzag sewing machine having stitch information for forming the stitch shape of this embodiment.

[Effect of the invention] As described above, according to the invention, a fixed-sized chic with both ends bent is set in a predetermined position with the bent part facing up, and the crotch cross is placed on top of it with the back side facing up. Since the stitches are sewn together on the bottom side, it is easy to sew the trousers together, improving work efficiency. Also, since the stitches are sewn from the back of the crotch cross, the front side of the seam is exposed to the surface of the crotch of the pants, creating a clean and neat seam. The product is made.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a sewing machine equipped with the sewing machine of the present invention, FIG. 2 is a sectional view of the upper presser plate shown in FIG. 1, and FIG. FIG. 4 is a perspective view of the main parts of the present invention, and FIG. 5 is an explanatory view of the operation of the present invention. In the figure, 2... Upper holding plate, 2a... Notch in upper holding plate, 3... Lower receiving plate, 3a... Notch in lower receiving plate, 5... Rotating plate, 5a... Cutting in rotating plate. Missing, 6
...Elastic board.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A lower receiving plate having a notch in the center that matches the shape of the object to be sewn, and a base pivotably mounted on the lower receiving plate so as to be rotatable;
An elastic material with a notch that almost matches the notch of the lower receiving plate when the free end is rotated and overlapped with the lower receiving plate, and has claws at both ends of the notch that protrude into the notches of the lower receiving plate. It consists of a rotary plate provided with a plate, and a vertically movable upper holding plate, which has a notch in the center opposite to the notch in the lower receiving plate, and has a pressing member protruding downward from the periphery of the notch, When the upper holding plate is lowered and the pressing member of the upper holding plate is inserted into the notch of the rotating plate and the notch of the lower receiving plate, the cloth held between the upper holding plate and the rotating plate and the notch of the lower receiving plate are removed. The tip of the pressing member of the upper presser plate is located inside the tip of the elastic plate of the rotating plate so that the sewing material placed on the rotating plate and pressed by the tip of the elastic plate of the rotating plate is pressed onto the throat plate in close contact with the workpiece. Sewing machine presser foot device. 2. A practical use characterized in that a magnet is disposed in a recess on the upper surface of the free end of the rotary plate, and when the free end of the rotary plate is rotated upward, the magnet of the rotary plate is attracted to the lower surface of the upper holding plate located at the upper position. A presser foot device for a sewing machine as described in item 1 of the patent application.