JPS6215032Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rubber insertion ruler for a sewing machine, and more specifically to a rubber insertion ruler for a flat sewing machine equipped with an auxiliary feeding rear puller for pulling out rubber-containing fabric.

When sewing an elastic band into the folded part of body fabric, such as the waist band of pants for jogging wear, conventionally, an elastic ruler 1 as shown in Figures 1A and B is used, and the elastic band is sewn into the flat groove 2 of the ruler. The band 3 was inserted and guided along the feeding direction, but when using this ruler to insert the elastic, the folded width H ₁ of the body fabric 4 becomes unnecessarily larger than the elastic width H ₂ as shown in Figure 1C. As shown in Figure 2, the folded part of the body fabric was loose, giving an unsightly appearance and detracting from the product's value. If the ruler 5 that guides the folded part of the body fabric 4 is moved closer to the elastic ruler 1, the folded width will become smaller and the looseness of the folded part can be eliminated, but on the other hand, The gap C between the rubber insert and the tip of the ruler becomes smaller, making it difficult for the body fabric to move smoothly and making it more likely that the fabric will get jammed.

The present invention is configured so that the rubber band can be guided in a bent or bent state by using a rubber band ruler.The rubber band guided in a bent or bent state by the rubber band ruler is It has been restored so that it can be sewn into the folded part of the body fabric, thereby eliminating looseness at the folded part of the body fabric, increasing the product value, and making it possible to feed the body fabric without any trouble as before. It is something.

To explain this using a drawing, the rubber-filled ruler 11 is mounted on a bracket 12 so that it can be manually moved laterally (in the direction of the arrow in Figures 2 and 3), and the lower part of one side is removed and the lower part is moved. A main body 13 having stepped sections, a ruler plate 15 fixed on the main body so as to be adjustable in position in the direction of the arrow, and guiding the end surface of one side of the rubber band 14, and a ruler plate 15 on the lower part of the one side of the main body. The guide plate 16 is fixed to the main body and has a protrusion from the main body bent upward so as to form a groove in which one side edge of the rubber band is inserted between the guide plate 16 and the end face of the main body. It is desirable that the ends of the plate 16 be bent further to the sides as shown in the figure, and formed into a hook shape so as not to interfere with the feeding of the body fabric. In addition, the ruler plate 15 is also provided with a presser portion 17 as shown in the figure so that the end of the rubber band side is reliably guided without floating.
It is desirable to protrude so that the rubber band side end can be inserted. In addition, in the figure, 19 is a fabric edge guide interposed between one side of the rubber-filled ruler and the bracket, and 20 is a ruler that guides the folded part of the fabric 21, both of which can be positioned on the bracket. The rubber-filled ruler is attached to a cross plate 22 that extends from the lower side of one side toward the front in the feeding direction, and the latter ruler changes its mounting position to adjust the gap with the guide plate that is bent upward. I'm starting to be able to do it. Here, the cross plate 22 is inclined or curved downward on the near side in the feeding direction, and forms an inclined edge or a curved edge cut in a straight line or a curved shape up to the fabric edge guide 19. Due to the former configuration of the cross plate, the resistance of the plate edge of the cloth fed from below onto the cross plate is reduced, and the movement becomes smooth. In addition, with the latter configuration, the folded portion hangs down from the sloped edge or curved edge of the cross plate, so that the curl at the edge of the fabric is squeezed and gradually straightened (see Figure 5), and the presser is pressed immediately after straightening. If the material is fed under a metal (not shown), a good product can be obtained without causing any unstitching.

Before sewing, first tighten the rubber band 14.
In addition to positioning the ruler plate 15 according to the width of the fabric, the mounting position of the fabric edge guide 19 is adjusted in accordance with the needle drop position in order to position the folded edge of the fabric. Adjust the mounting position of 20. Next, put the rubber band 1 on the rubber ruler with it stretched in the feeding direction.
One side of 4 is inserted into the gap between the end surface of the main body and the upwardly bent guide plate and bent, and the front end thereof is positioned under the presser foot. A rubber band bent by a rubber-filled ruler returns to its original state due to its elasticity before and after the ruler (see Figure 3). Next, pass the side edge of the body fabric placed over the elastic ruler between the guide plate and the ruler, wrap it around the end of the elastic ruler, join the end to the fabric guide 19, and fold it back. Insert the front end of the fabric under the presser foot. As mentioned above, in order to make it easier to pass the fabric through, it is desirable to manually move the rubber ruler by an appropriate amount to the left in the figure to widen the gap between it and the ruler.

After setting the rubber band and body fabric on the elastic ruler and lowering the presser foot, the fabric and elastic band are fed out as sewing begins, with the hand in front of the ruler placed on the fabric and elastic band. The rubber band fed through the rubber holder ruler is bent once by the ruler before being sewn, but immediately after passing it returns to its original shape due to its elasticity.
It fully expands within the folded part (see Figure 4).

Note that if the body fabric is cylindrical and the elastic band is endless, both are normally hung on rollers, and the elastic band is hung in a taut state, so there is no need to apply your hands as described above, and the fabric is All you need to do is give your hand a little. In the case of such a cylindrical item, the elastic ruler must be manually moved back from at least the seam forming line before the seam goes around and hits the elastic ruler, which may impede the progress of the seam. You will be prevented from doing so.

In the above embodiment, the rubber band is bent into an angular shape by the rubber ruler, but it may also be bent into a curved shape or folded back. Furthermore, even if a gap is formed between the main body and the guide plate and one side of the rubber band inserted into the gap is bent upward, the other edge side of the rubber band on the opposite side to the above embodiment may be bent upward. It may be configured to be bent.

According to the rubber-filled ruler of the present invention, as described above,
By bending or bending the rubber band once, it is possible to secure a normal gap between it and the ruler so that it does not interfere with the feeding of the body fabric, and the rubber band can be restored before sewing. Since the fabric is sewn into the folded part of the body fabric, it is possible to obtain a sewn product with high commercial value without looseness in the folded part of the body fabric.

[Brief explanation of the drawing]

Figure 1A is a plan view of the main parts of a conventional rubber-filled ruler.
Figure 1B is a sectional view taken along the line A-A in Figure 1A, Figure 1C is a sectional view of a conventional product, Figure 2 is a front view of the rubber-filled ruler according to the present invention, and Figure 3 is the main part of the ruler. A plan view, FIG. 4 is a cross-sectional view of the product obtained by the I-jitsu, and FIG. 5 is a state diagram of the body fabric attached to the I-jitsu. 11...Rubber ruler, 12...Bracket,
13... Body, 14... Rubber band, 15... Ruler plate, 16... Guide plate, 19... Fabric edge guide,
20...Guess ruler, 21...Dough, 22...Cross plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In the rubber band ruler used in sewing machines that sew rubber bands into the folded part of body fabric, the ruler is provided just before the seam forming area and has a constant width in the feeding direction. and a rubber band guide surface having the same width as the rubber band in a direction perpendicular to the feeding direction is bent or bent in a direction perpendicular to the feeding direction, and the rubber band is temporarily bent or bent before being sewn. ruler. (2) The rubber-inserted ruler according to claim 1, wherein the guide surface includes a flat surface and a refracting surface or a curved surface following the flat surface. (3) The rubber-filled ruler according to claim 1, wherein the end of the guide surface is one side of the groove into which the side end of the rubber band is inserted.