JP2548258Y2 - Automatic lip stitching device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic flap sewing apparatus for folding a cloth edge into an S shape in front of a presser foot and sewing the bent end to the cloth edge.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 44-3392 discloses this type of apparatus.
Such devices are known. This device has a guide ruler in front of the presser foot, two upper and lower horizontal guide plates with their edges along the cloth feed direction before this, and the edge between the two guide plates intersects the edge of the guide plate. The intermediate guide plate fitted in such a manner is arranged, and the fabric is conveyed by a belt conveyor installed on a sewing machine table and passed between the three guide plates, and the fabric edge is gradually bent deeply into an S-shape to lower the fabric. The outer surface of the side bent portion is brought into contact with the guide ruler and the inner surface is brought into contact with the edge of the lower guide plate. It is sewn to the edge.

[0003]

In the above-mentioned conventional apparatus, since the upper and lower guide plates are integrally fixed and provided on a table, when the thickness of the supplied cloth is large, the cloth may be clogged. When the material cannot be smoothly fed into the sewing machine, and when it is thin, the curvature of the bent portion of the fabric that is bent into an S-shape becomes large, and the material is sent under the presser foot of the sewing machine and rapidly flattened. And the position of the bent portion is shifted, or the fabric is wrinkled. Furthermore, it curls on thin fabrics,
There is such a problem that the sewing may come off and the appearance of the finished sewing may be deteriorated.

The present invention has been made to solve the above-mentioned problem, and is intended to adjust the distance between a table or a belt conveyor, a guide plate, and a guide plate in accordance with the thickness of the cloth.

[0005]

According to the present invention, a guide ruler is provided in front of a presser foot of a sewing machine, and two upper and lower horizontal guide plates are provided in front of the guide ruler. And an intermediate guide plate whose edge intersects with the edge of the upper and lower guide plates so as to fit gradually toward the presser foot between the two guide plates, and a belt installed on the sewing machine table. The fabric is conveyed by the conveyor and passed between the upper and lower three guide plates, and the fabric edge is gradually bent deeply into an S shape so that the outer surface of the lower bent portion abuts on the guide ruler, and the inner surface is the lower guide plate. The lower guide plate is placed on the sewing machine table in an automatic blind sew sewing machine in which the bent portion is guided on the cloth feed direction line passing through the needle drop of the sewing machine and sewn to the fabric edge. high by a pair of the first hanger tool attached to exist an appropriate interval Together but is adjustably supported horizontally, to allow adjusting the height by the pair of upper guide plate was Ke attached <br/> to exist an appropriate interval on the lower guide plate second hanger device horizontally
On the sewing machine table as appropriate.
Height and left by a pair of supports mounted with an interval of
Adjustably horizontally to support the right position, the second hanging
Bracket is attached to the lower guide plate beside the upper guide plate
And vertically above the upper guide plate, and sideways on the upper guide plate
A screw shaft loosely fitted to the above-mentioned extending bracket, and an upper guide plate;
Coil spring mounted on the above screw shaft between the bracket
And a screw that is screwed to the screw shaft protruding from the bracket.
It is composed of a set.

According to the present invention, the height of the lower guide plate is adjusted according to the thickness of the cloth, and thereby the distance between the table or belt conveyor and the lower guide plate is adjusted. When the height of the lower guide plate is adjusted, the height of the upper guide plate also changes, and the distance between the upper and lower guide plates does not change. When adjusting the distance between the upper and lower guide plates, the height of the upper guide plate is changed by the second suspension tool. Before or after adjusting the height of the guide plate, the height of the intermediate guide plate is also changed so that it is located between the two guide plates.

[0007] The cloth guide by the guide plate is performed more accurately,
In order to correctly position the bent portion, a provision may be provided at the tip of the lower guide plate for guiding the outer bent end of the fabric bent by the intermediate guide plate by the presser foot side.

The fabric coming out of the guide plate expands due to its restoring force and becomes rounded. In particular, at the start of sewing, unless the presser foot is raised, it is supported by the presser foot. Therefore, usually, the presser foot is raised, the fabric is advanced under the presser foot, then the presser foot is lowered, and sewing is started.However, when the presser foot is lowered, the bent portion of the fabric is crushed and the bent end is bent. Is protruded from the cloth feed line, and the sewing start end is deeply sewn. In order to solve this problem, it is preferable to provide an air outlet between the presser foot and the guide plate, and to blow air out of the fabric coming out of the guide plate to suppress the swelling of the fabric.

The air outlet is desirably provided in addition to the space between the presser foot and the guide plate to properly adjust the bending position and shape and to prevent the cloth edge from curling up. It is desirable. The guide plate also makes the upper guide plate transparent so that the movement of the fabric edge and the lower fold just before being sent under the presser foot can be visually confirmed through the cutout of the intermediate guide plate. Is desirable.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Rollers (not shown) provided on both ends of a sewing machine table 1 as shown in FIG.
The upper part of the belt conveyor 2 bridged in between is passed through,
The cloth on the table is conveyed at the same feed speed in synchronization with the feed of the overlock sewing machine.

On the sewing machine table 1, an overlock sewing machine 3 and a presser foot 4 of the overlock sewing machine 3 are provided, and a cloth edge of the cloth conveyed by the belt conveyor 2 is gradually bent deeply into an S-shape. A music device 5 is provided. As shown in FIGS. 1 and 2, the folding device 5 is supported on the sewing machine table 1 by a first suspending device 7 so as to be adjustable in height, and the front end is bent upward to bend. A lower guide plate 8 for facilitating entry of a cloth edge below;
The height of the lower guide plate 8 is supported by a second suspender 9 so as to be adjustable, and the transparent upper guide plate 11 whose edge is aligned with the lower guide plate 8 in the cloth feeding direction, and the sewing machine table 1. The height is adjusted by a support 12 so that the edge between the upper and lower guide plates 8 and 11 intersects with the edge of both guide plates so as to be fitted gradually toward the presser foot 4, and An intermediate guide plate 13 whose front end is bent downward, one side of the front side located within a notch 14 at the front end of the intermediate guide plate, and a front end located under a presser foot; The convex part 1 is formed on the convex part 15 formed following the concave part at the plate tip.
6 comprises a guide ruler 17 having a recess between them facing each other, and a ruler 18 provided at the end of the lower guide plate 8 and reaching the side of the presser foot, and the cloth edge of the cloth W conveyed by the belt conveyor 2. As shown in FIG. 3 to FIG. 6, the intermediate guide plate 13 which is gradually deeply fitted between the upper and lower guide plates 8 and 11 is gradually pushed between the upper and lower guide plates and is bent into an S-shape. The bent portion of the cloth W bent in the S-shape at the tip is formed by the convex portion 16 of the guide ruler 17 and the lower guide plate 8.
And the position of the bent end is corrected between the concave portion of the lower guide plate 8 and the convex portion 15. At the time of this correction, the notch 14
In addition, the concave portion at the tip of the lower guide plate functions to facilitate the correction. The notch 14 at the end of the intermediate guide plate is also
It has a function of visually confirming the position of the outer bent end immediately before being introduced into the presser foot through the transparent upper guide plate 11. The bent portion whose bent end position has been corrected is then correctly positioned and sent out by the projection 15 at the tip of the lower guide plate, and is sent under the presser foot 4 while the inner bent end is guided by the ruler 18. The bent part sent under the presser foot is guided by a ruler 18 and the cloth edge is trimmed with a scalpel (not shown), sent to a needle drop 19 and sent to a sewing machine needle and shown in the figure. Automatic blind sewn stitching is performed on the bent end with a looper that is not used. The guidance by the ruler 18 is performed until the needle drop 19 is reached (see FIG. 6).

As described above, the cloth edge is folded into an S-shape, fed under the presser foot, and the overlock sewing machine 3 performs automatic bunching sewing in which the bent end is sewn to the cloth edge. The folding device 5 shown in the figure is provided with six air outlets in order to properly adjust the folding position and shape of the cloth and to prevent the cloth from curling up. That is, before the cloth edge is bent into an S-shape, air is blown to the side, and the air outlet 21 for extending the cloth edge to prevent curling, so that the cloth edge is smoothly fed under the upper guide plate 11. The air outlet 22 for blowing air toward the front end, and the upper guide plate 11 is moved so that the cloth edge which has begun to be bent by the intermediate guide plate 13 smoothly advances between the upper guide plate 11 and the intermediate guide plate 13. 23 that blows along the outer edge of the air outlet, and blows air laterally to the upper side surface of the S-shaped bent portion to perform the operation of properly adjusting the bent position and shape. Air outlet 25 for blowing air upward to prevent the cloth from being bent at the bent portion in the notch 14, and blowing air to the cloth exiting the guide plate to suppress the swelling of the cloth and lower the presser foot. And the like.

Next, the hanging members 7, 9 and the supporting members 12 of the guide plates 8, 11, 13 will be described in detail with reference to FIGS.
The first suspenders 7 of the lower guide plate 8 are provided corresponding to the front and rear of the lower guide plate 8, and are respectively fixed to the bracket 28 erected on the sewing machine table 1 and the upper end of the bracket,
A rod 29 extending parallel to the table 1 and a block 3 holding the rod 29 and fixed to the rod end so as to be adjustable in position.
And a bracket 31 mounted on the lower guide plate 8 via a spacer 47 so as to be slidably fitted to the block 30 and displaying a scale 48 on an end surface thereof, and screwed into the block 30 and on both sides of the block 30. A bracket 31 is rotatably supported by the bracket 31 and has a screw shaft 33 provided with an image 32 at the upper end. When the screw shaft 33 is turned by the image 32, the bracket 31 is stopped from rotating by the block 30.
When the screw shaft 33 is screwed into the screw shaft 33, the block guide 30 moves up and down by one pitch for one rotation, and the lower guide plate 8 fixed to the lower end of the bracket moves up and down, thereby adjusting the height. Is done. The height can be recognized by a scale 48 divided by the block 30.

The lower guide plate 8 is used to adjust the height and
By adjusting the position of 0 along the rod 29, the left and right positions can be adjusted. The second suspenders 9 of the upper guide plate 11 are provided before and after the upper guide plate 11, and are respectively provided on the lower guide plate 8 by the spacer 47 or the spacer 49.
A screw shaft 37 vertically mounted on the upper guide plate 11 and projecting through one of a plurality of holes 36 formed in the bracket 35;
A coil spring 38 attached to a screw shaft 37 between the bracket 35 and the screw shaft 37 protruding from the bracket 35
The upper guide plate 11
Is elastically supported by a coil spring 38 on a bracket 35, and a nut 39 is screwed into the upper guide plate 1.
The height of 1 can be adjusted. By changing the position of the hole 36 through which the screw shaft 37 passes, the position of the upper guide plate 11 can be adjusted in several steps in the left-right direction.

The support 12 of the intermediate guide plate 13 is also provided in the front and rear, but the configuration is slightly different between the front and rear. That is, the front support member 12 has a screw shaft 41 vertically provided on the sewing machine table 1 and a left-right long hole 42 fitted to the screw shaft 41, and the support member 43 fixed to the intermediate guide plate 13.
Is screwed to the screw shaft 41 passing through the elongated hole 42, and the support fitting 4
3 comprises a nut 44 for supporting the support member 3 from below and a thumbscrew 45 for holding the support fitting 43 with the nut 44;
The height of the intermediate guide plate 13 is adjusted by the screwing operation of the nut 44 and the thumb screw 45, and the intermediate guide plate 13 can be adjusted left and right within the range of the long hole 42. Is supported by a bracket 51 in which a screw shaft 53 corresponding to the screw shaft 41 is fixed to the sewing machine table 1 so that the position can be adjusted in the left-right direction. Corresponding support bracket 52
Does not have a long hole like the support fitting 43 and cannot be adjusted left and right with respect to the screw shaft 53. Therefore, when the front support bracket 43 is adjusted right and left within the range of the long hole 42, the intermediate guide plate 13 rotates around the screw shaft 53 on the near side, and the tip portion is deeper between the upper and lower guide plates. Alternatively, they are fitted shallowly.

[0016]

[Effects of the Invention] The invention of the present application is configured as described above, and has the following effects. According to the automatic bunching device according to claim 1, (1) the height of the upper guide plate and the lower guide plate according to the thickness of the cloth.
Are adjusted horizontally, and the height of the intermediate guide plate and
Horizontally adjust the left and right position, table and lower guide plate and each plan
The distance between the inner plates can be maintained constant at any point and supported , and automatic blind stitching of various thicknesses of fabric can be smoothly performed. Even in the case of thin fabrics, the folded width is uniform, and a product having a good appearance after sewing can be obtained. (2) The upper guide plate uses a nut against the action of the coil spring.
The height is adjusted by the screwing operation.
Resiliently supported upward by a coil spring at a height
The thickness of the dough changes slightly due to the
Do not send the dough without supporting it
And be able to.

(3) The upper guide plate is supported on the lower guide plate by a second suspender, and when the height of the lower guide plate is adjusted, the upper guide plate also has a certain distance from the lower guide plate. The height changes, so when it is not necessary to change the distance between the upper and lower guide plates, it is not necessary to adjust the upper and lower guide plates individually, which reduces the number of operations and the upper and lower guide plates Among
Adjust the height of the lower guide plate even when changing the interval
The lower guide plate does not contact the upper guide plate
Lower guide plate touches upper guide plate when adjusting guide plate height
It is not necessary to move the upper guide plate in advance so as not to
The number of operations is small. (4) The bracket of the second suspension tool is located under the upper guide plate.
It is mounted on the guide plate, and between the upper and lower guide plates,
Since there are no obstacles, when folding the fabric into an S-shape,
Can be wide. (5) The intermediate guide plate is a sewing machine independent of the upper and lower guide plates.
Up and down because it is independently supported by support
And the adjustment work becomes easy. Effect
Play a fruit.

According to the first hanging device according to claim 2,
The height of the lower guide plate can be adjusted by screwing in the screw shaft, and the left and right positions of the lower guide plate can be adjusted by changing the mounting position of the block on the rod.

According to the third aspect of the present invention, a ruler for guiding the inside bent end of the cloth is provided at the tip of the lower guide plate, so that the bent end protruding from the guide plate is positioned below the presser foot. It is introduced and guided to the needle drop or the vicinity thereof, so that the automatic swaddling can be performed more reliably and accurately. In the automatic opening felled device according to claim 4 can prevent the curling of the hem it is possible to adjust the folding position and shape of the fabric correctly by blowing air.

According to the upper guide plate of the fifth aspect, the movement of the edge of the cloth can be visually confirmed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an automatic swallowing device.

FIG. 2 shows a plan view of the folding device.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a sectional view taken along line DD of FIG. 2;

FIG. 7 is a sectional view taken along line EE of FIG. 1; 1 sewing machine table 3 overlock sewing machine 4
Presser foot 5 Bending device 7 First suspender 8 Lower guide plate 9 Second suspender 11 Upper guide plate 12 Supporter 13 Intermediate guide plate 17 Guide ruler 1
8 Rulers 21, 22, 23, 24, 25, 26 Air outlets 28, 31, 35 Bracket 29 Rod 30
Blocks 33, 37, 41 Screw shaft 38 Coil spring 43
Support bracket

Claims (5)

(57) [Scope of request for utility model registration] 1. A guide ruler is provided near the presser foot of a sewing machine.
Furthermore, the upper and lower two upper and lower guide plates with the edge along the cloth feeding direction before that, and the edge between the two guide plates.
Facing the presser foot and intersects the edge of the upper and lower guide plates arranged an intermediate guide plate so as to deeply engaged gradually, Mishinte - vertically conveying the cloth by installing the belt conveyor on the table three While passing between the guide plates, the fabric edge is gradually bent deeply into an S-shape, and the outer surface of the lower bent portion is brought into contact with the guide ruler, and the inner surface is brought into contact with the edge of the lower guide plate,
In an automatic underlay sewing apparatus in which a bent portion is guided on a cloth feed direction line passing through a needle drop of a sewing machine and sewn to an edge of the cloth, a lower guide plate is provided with an appropriate interval on the sewing machine table.
With height is adjustable horizontally supported by a pair of the first hanger tool attached to a pair of the upper guide plate mounted to exist an appropriate interval on the lower guide plate <br/> first pair mounted to exist an appropriate interval on the table - is adjustably horizontally supporting the height by two-hanging device, further intermediate guide plate Mishinte
The height and the left and right positions are supported horizontally so as to be adjustable by the support tool, and the second suspension tool is moved to the lower guide plate beside the upper guide plate.
Bracket attached on top and vertically installed above upper guide plate
And is loosely fitted to the bracket extending laterally on the upper guide plate.
Screw between the upper guide plate and the bracket
A coil spring mounted on the shaft and protruding from the bracket
An automatic underlay sewing device comprising a nut screwed onto the screw shaft . 2. The first hanging device is supported horizontally.
And the left and right positions are fixed to the rod so that it can be adjusted.
Block, a screw shaft screwed into the block, and a screw
Bracket that goes up and down by screwing in the shaft and attaches the lower guide plate
2. The automatic swaddle stitching device according to claim 1 , further comprising a slot. 3. An inner bent end of the cloth is held at the tip of the lower guide plate.
2. The automatic underlay sewing apparatus according to claim 1, further comprising a ruler for guiding to a side of the gold . 4. An air blower for blowing air toward an intermediate guide plate.
2. The automatic blind stitching apparatus according to claim 1, further comprising an air outlet . 5. The automatic underlay sewing apparatus according to claim 1 , wherein the upper guide plate is a transparent plate .