JPH044707Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is attached to a sewing machine via a fixed piece,
Fold a strip of fabric, so-called belt fabric, in half, and then fold both longitudinal edges of the fabric into two.
This relates to a belt-shaped folding tool used for sewing the belt in a folded state.

``Prior Art'' As shown in FIGS. 6 to 8, a belt is bent at part A (bifold part), and the belt is folded at both longitudinal ends (longitudinal and When forming a triangular or linear (orthogonal) B part and a longitudinal straight part C to hem or stitch, first sew the A part using a normal sewing machine, so In principle, there is no problem. Furthermore, for essential or aesthetic reasons, it is necessary to hem portions B and C after each portion is bent inward.

In such cases, conventionally, the fabric is folded in half in the longitudinal direction, and then both longitudinal edges, so-called C portions, are folded inward using a device or folding tool.

The bifolded and folded fabric forming the belt prototype thus constructed is sewn into a continuous long tape shape, and the folded C portion is sewn.

Then cut out each piece of tape-shaped fabric. Then, the hemming at a portion corresponding to part B of the fabric forming the cut-out belt prototype is untied, and this untied portion is folded inward. After that, the belt was manufactured by making the border of this B part.

Another method is to iron the folded part in advance and then sew it on, but this method is quite time-consuming.

Furthermore, technical documents related to these include Jikosho
No. 55-34932 folding device for cloth, 1987-
There is a slide binder device for sewing machines etc. No. 86179.

``Problem that the invention aims to solve'' When sewing belts using conventional equipment, it is necessary to carefully fold the C part inward to avoid wrinkles in the fabric, which is a very difficult task. This is a time-consuming task.

Furthermore, in the tape-like sewing method, it is necessary to unravel part of the C part to create the B part, which results in wasted work and cannot be expected to produce a beautiful finish.

Furthermore, with the conventional double folding tool having a flap shape, it is difficult to insert the fabric for the belt into the folding operation section, and thus requires a lot of effort and skill.

On the other hand, in the method of sewing after ironing,
If the overlap of the C portions is not sufficient, misalignment will occur and the product value will be significantly degraded.

Furthermore, the conventional latspa-shaped bi-folding tool is
The bending dimension and the folding dimension cannot be easily changed, and the device lacks versatility.

"Means for Solving the Problems" In view of the above, the present invention is to allow the B portion of the belt to be bent and bordered at the same time.
In addition, in order to prevent displacement of part B, the belt-shaped belt bending tool has a fixed piece that is attached to the sewing machine table, a positioning piece that is pivotally attached to this fixed piece, and a sliding part that slides on this positioning piece. a channel piece that is movably provided; a screw that is provided between the mounting arm of the channel piece and the positioning piece and that fixes the channel piece in a sliding position; and a screw that is movable on the mounting arm of the channel piece. A piece of cloth that is inserted into the overlapped part of the fold when a long and narrow piece of cloth is folded inward in the longitudinal direction of the workpiece provided in the workpiece, and that is stopped at the folded part of the fabric a thin plate-like adjustment piece having a surface guide piece; a screw provided between the adjustment piece and the channel piece for fixing the adjustment piece in a sliding position; and a screw on the tip of the adjustment piece. The fabric is bent into an ultra-flat shape fixed to the channel piece, which is arranged opposite to the lower surface, and whose fabric introduction part is located in front of the adjustment piece, and has a bent bottom part that regulates the tip of the folded fabric. Two dial plates, each of which is arranged so that its tip faces the central bent part, and whose cloth introduction part is located in front of the adjustment piece. This is a wrapper-shaped belt bending tool consisting of two fixed, almost flat plates;

"Function" Next, the function of the present invention will be described. A long and narrow cloth to be processed (for a belt) is folded in half, and its B portion is sewn, for example, in the shape of a mountain.

If you turn it over so that the sewn outer part is on the inside, the outline of part B will be formed here.

Therefore, with the flap-shaped belt folding mechanism in the inoperative position, the double folding part A and then the B part are hemmed in this order.

Next, grasp the adjustment piece and move the positioning piece, the adjustment piece, the square plate, and the flat plate (hereinafter collectively referred to as adjustment piece, etc.) to the operating position using the fixed piece as a reference.

Then, on the folded part of both edges that were folded in half,
Insert the adjustment piece and attach the fabric guide piece to the inside of the double-folded part A.

As a result, the upper edge portion is inserted into one of the inverted U-shaped grooves formed by one of the square plates and the flat plate, and is folded back at the same time.

Further, the lower edge portion is inserted into the other inverted U-shaped groove formed by the other letter plate and the flat plate, and is folded back at the same time.

Also, the distance between the double-folded part A of the fabric and the upper and lower edges is the same as that of the fabric guide piece and each folded U.
It has the characteristic that the width of the fabric, for example, the width in the longitudinal direction of the belt, is kept constant.

The upper and lower edge portions are respectively inserted into the double U-shaped groove, and a double folded portion is formed therein.

In this state, when the sewing machine is operated and the fabric is fed in a direction perpendicular to the adjustment piece etc., the fabric is simultaneously folded back and the hemming of the C section is sequentially done.

By repeating such operations, the operations of sequentially conveying, folding, hemming, etc. of the fabric are completed in a very short time and easily, and ultimately the hemming operation of the belt C portion is completed.

Thereafter, the user grasps the adjustment piece and moves it to the operating position using the fixed piece as a reference, and begins the next sewing operation.

"Embodiment" An embodiment of the present invention will be specifically described below with reference to the drawings.

1 is the sewing machine body, 2 is the sewing machine table,
A fixing piece 3 is attached to this sewing machine table 2.

A positioning piece 5, which is hook-shaped in plan view, is pivotally attached to the fixed piece 3 via a pivot 4. Through the swinging of this positioning piece 5, a flap-like belt bending mechanism, which will be described later, is established. , from an inactive position to an active position, or vice versa.

In the figure, 5a is a scale provided on the positioning piece 5, and a belt-shaped belt bending mechanism described later is moved based on this scale 5a.

This flap-shaped belt bending mechanism (hereinafter simply referred to as mechanism) is constructed as follows.

That is, first, there is a chevron-shaped channel piece 6 which is slidably provided and spans over the positioning piece 5 constituting this, and this channel piece 6 is inserted into the elongated hole 6a via the presser metal 8. The positioning piece 5 is fixed to the positioning piece 5 via a screw 7.

Therefore, this channel piece 6 has a screw 6a.
By screwing in or screwing back, the positioning piece 5 can be moved within the size range of the elongated hole 6a with the positioning piece 5 as a reference.

This makes it possible to accommodate several types of belt bending dimensions and folding dimensions, ensuring the versatility of this mechanism.

Further, the thin plate-like adjustment piece 10 that constitutes this mechanism and is inserted between the two folded pieces of fabric 20 in order to fold and sew the long and narrow fabric 20 folded in two is In the example shown in FIG. 1, it is slidably provided on the mounting arm 9 extending from the channel piece 6 via a screw 11, and specifically, the long hole 10a
It can be moved within the range of dimensions. Further, in the example shown in FIG. 4, the mounting arm 9 is slidably provided via a screw 7 for fixing the channel piece 6 to a mounting arm 9 provided so as to span the channel piece 6. Specifically, the mounting arm 9
It can be moved within the range of the dimensions of the elongated hole 9a.

Further, the tip portion 10c of the adjustment piece 10 is provided with a protrusion 101 and a cloth surface guide piece 102, so that smooth insertion of the bi-folded cloth 20 and accurate hemming of the folded portion can be expected.

In the figure, 10b is a scale provided on the adjustment piece 10.

Therefore, this adjusting piece 10 can be moved simultaneously with the channel piece 6 using the positioning piece 5 as a reference and within the range of the dimensions of the elongated hole 6a by adjusting the screw 7 to be screwed in or out.

Moreover, by adjusting the screws 7 and 11 by screwing in or screwing them back, the adjustment piece 10 can be adjusted simultaneously with the positioning piece 5 and the channel piece 6 through the long hole 6a + the long hole 10.
It can move within the length dimension a (within the total dimension range).

Furthermore, the adjustment piece 10 can be moved independently within the range of the dimensions of the elongated hole 10a with the channel piece 6 as a reference by adjusting the screw 11 to be screwed in or screwed back.

In this way, the adjustment piece 10 is formed to be movable in three stages.

This allows bending dimensions of several types of belts,
Alternatively, the mechanism can be adapted to different sizes of folding dimensions, ensuring the versatility of this mechanism.

The cloth surface guide piece 102 provided at the tip end 10c of the adjustment piece 10 is to be stopped at the double-folded part A of the cloth 20 folded in half, and the cloth face guide piece 102 provided at the tip end 10c of the adjustment piece 10 is to be stopped at the double-folded part A of the double-folded cloth 20. 12, 12a inverted U-shaped groove X,
Y and is configured to regulate the width of the belt in the longitudinal direction.

Further, the adjustment piece 10 described above may be moved simultaneously with or separately from the dial plate and the flat plate, as will be described later.

Note that they are arranged oppositely with the adjustment piece 10 sandwiched therebetween,
and two letter plates 12 bent into ultra-flat letter plates provided at the tip of the channel piece 6,
12a has its cloth introducing portions 112, 112a protruding from the front surface of the adjustment piece 10, and the ultra-flat opening of its dial plate facing toward the cloth surface guide piece 102 of the adjustment piece 10. .

Further, as described above, the dial plates 12, 12a move forward and backward through the movement of the channel piece 6, and thereby the bending dimension and the folding dimension can be changed. Note that the lower dial plate 12a is longer.

The cloth introducing portions 113, 1 are provided at the center bent portions 212, 21a of the dial plates 12, 12a.
The guide plate 13, 13a, which has a portion 13a integrated and has other open portions 213, 213a, is fixed. As a result, the center bent portions 212, 212a of the dial plates 12, 12a are held in a predetermined position, and the inverted U-shaped grooves
The inverted U-shaped grooves Y are arranged opposite each other.

Therefore, C of the fabric 20 is placed in this inverted U-shaped groove
The upper edge part C' of the
By inserting the lower edge portions C'' of the C section 0, both longitudinal edge portions of the fabric 20 are folded back.

Further, as described above, through the movement of the channel piece 6, the flat plates 13, 13a are
It moves forward and backward together with 2a, thereby allowing the bending dimension and folding dimension to be changed.

Furthermore, the front part of the adjustment piece 10 is inserted into the open parts 213, 213a, and is configured to be slidable between the flat plates 13, 13a.

Further, the dial plates 12, 12a have bent bottom portions 31.
2,312a is provided, and this bent bottom 3
12, 312a is configured to restrict the tip portions 1C', 1C'' of the C section of the folded cloth 20.

In the figure, 17 is a projection provided at the corner of the flat plates 13, 13a.

``Effects of the invention'' As detailed above, the present invention has an inverted U-shape that is vertically symmetrical by arranging a letter plate with a bent bottom and a flat plate with an adjustment piece in between. This is a configuration in which a groove is provided.

Therefore, there is an effect that the folded edges of the belt in the longitudinal direction can be quickly and easily edged with substantially the same folded dimensions without requiring any preparation.

Further, the belt folding and sewing work can be performed extremely efficiently, and the dimensional accuracy can be made uniform.

Furthermore, the length of both folded edges of the belt is always kept constant and has the effect of being sewn.
It is also very useful for improving the efficiency of sewing work, saving labor, and reducing costs.

Further, the present invention has a configuration in which a channel piece and/or an adjusting piece plate having a square plate and a flat plate are slidably provided with respect to the positioning piece.

Therefore, the bifold dimension (width in the longitudinal direction) of the belt, that is, the width dimension of the belt, can be changed in three stages, which is an effective and versatile device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is an enlarged front view of Fig. 1 seen from the A direction, and Fig. 3 is an enlarged view of Fig. 1 seen from the B direction. 4 is a front view, FIG. 4 is a perspective view showing the relationship between the other channel pieces and the mounting arm, FIG. 5 is a perspective view showing the belt installed on a sewing machine, FIG. 7 is a sectional view of FIG. 6, and FIG. 8 is an enlarged plan view with some of the other belts omitted. 1... Sewing machine body, 2... Sewing machine table, 3
...Fixing piece, 4...Pivot, 5...Positioning piece, 5
b, 10b...Scale, 6...Channel piece, 6
a, 9a, 10a...long hole, 7, 11...screw,
8...Pushing metal, 10...Adjustment piece, 10c...Tip, 12, 12a... dial, 13, 13a...
Flat plate, 17... Protrusion, 20... Fabric, 112, 1
12a, 113, 113a...cloth introduction part, 21
2,212a...Central bent part, 213,213
a...open part, 312, 312a...bent bottom, C'...upper edge part, C''...lower edge part, 1
C', 1C''...Tip, X, Y...Inverted U-shaped groove.

Claims (1)

[Claims for Utility Model Registration] A fixed piece attached to the sewing machine table, a positioning piece pivotally attached to this fixed piece, a channel piece slidably provided on this positioning piece, this channel piece and the positioning piece and a screw provided between the channel piece and fixing the channel piece in a sliding position; a thin plate-shaped adjustment piece including a cloth surface guide piece that is inserted into the folded overlapped portion and is stopped at the double-folded portion of the fabric when the fabric is folded inward in the direction; A screw is provided between the channel piece and fixes the adjustment piece in a sliding position, and a screw is provided opposite to the upper and lower surfaces of the tip of the adjustment piece, and the cloth introduction part thereof is located in front of the adjustment piece. , and two letter plates bent into an ultra-flat letter shape fixed to the channel piece, each having a bent bottom portion for regulating the tip of the folded fabric, and a center bend of each letter plate. two substantially flat plates fixed to the dial plate, the cloth introduction part of which is arranged so that its tip faces the adjustment piece, and which is located in front of the adjustment piece; shaped belt bending tool.