JPH11207068A - Presser for sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily set cloth to a presser and to satisfactorily sew a curved part by providing a guide part in the state of extending forward in a cloth feeding direction with respect to a roll-guiding piece and supporting the guide part in the state of being capable of moving backward in the cloth feeding direction with respect to a presser main body. SOLUTION: A presser 1 for a sewing machine for rolled hemming consists of the presser main body 2 and a separated body 3 and an attaching part 4 to be freely attachably and detachably fixed to a presser bar provided for a sewing machine in the state of being freely and vertically movable is provided at the rear part of the main body 2. In addition, the main body 2 is provided with a presser part 5 which presses a cloth W from its upper side and whose front part is formed to be left and right projection part 6 and 7 in the shape of a fork projecting forward from both of its left and right sides in the state of extending forward from the lower end of the part 4. Then a roll-guiding piece guiding the tip part of the cloth W so as to roll in a threefold state is arranged within the cloth feed-in space 8 of the part 5, and a guide part 19 is provided in the state of extending forward in the cloth feeding direction and in the state of being capable of moving backward in the cloth feeding direction with respect to this piece 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presser mounted on a presser bar of a sewing machine.

[0002]

2. Description of the Related Art As a presser of a sewing machine, there is a three-turn presser used for three-turn sewing in which an edge of a cloth is folded in three while being sewn thereon. The three-winding presser includes a presser body attached to a presser bar of a sewing machine, a wrapping guide piece spirally curved to guide the end of the cloth into a three wrap shape, and a wrapping guide piece. And a needle-shaped guide portion which is positioned inside the stylus and stabilizes the wound state of the fabric.

[0003] In the three-winding presser, when the winding guide piece and the guide portion are fixed and integrated with the presser main body, the cloth is set on the presser at the start of sewing (cloth). Is fed between the guide part and the guide part)
Therefore, the guide member is fixed to the presser main body, the guide portion is separated from the presser main body, and the guide portion is supported by the presser main body so as to be laterally separated from the winder guide member. The “sewing presser” that facilitated setting the dough on the presser was
No. 64.

[0004]

In the prior art, when setting the cloth on the presser, the guide part is separated from the winding guide piece in the lateral direction. It is not possible to insert the guide part deeply forward in the feed direction of the dough with respect to the winding guide piece.
Since the winding guide piece has a spiral shape, when the guide section is moved in the lateral direction, the guide section is caught in the front side in the feeding direction of the fabric of the winding guide piece, and the guide section may be separated in the horizontal direction. There is no problem when sewing straight parts, but when sewing a sharply curved part (curved part), the tri-fold part of the cloth comes off the guide part, and the end of the cloth becomes stable There is a problem that a good tri-fold may not be obtained (it may not be a tri-fold), and there is a problem that a sewing width (an interval between an edge of a fabric and a seam) is not stable.

In order to solve this problem, it is necessary to insert the guide part deeply forward in the feed direction of the cloth with respect to the winding guide piece. As described above, when the guide portion is formed in a spiral shape, as described above, when the guide portion is moved in the lateral direction, the guide portion moves forward in the feed direction of the fabric of the roll-in guide portion. This causes a problem that the guide portion cannot be separated in the lateral direction.

Accordingly, the present invention has been made in view of the above problems,
The guide section is supported on the presser body so that it can be separated from the winding guide piece in the horizontal direction, so even if it is easy to set the dough on the presser, sharply curved parts can be formed. An object of the present invention is to provide a presser for a sewing machine that can be sewn well.

[0007]

The technical means taken by the present invention to achieve the above object is to provide a presser body 2 attached to a sewing machine with a spiral for guiding the end of the cloth W into a three-turn shape. The winding guide piece 10 formed in a curved shape is fixed,
The guide portion 19 positioned inside the winding guide piece 10 and stabilizing the wound state of the cloth W is separated from the presser main body 2, and the guide portion 19 is moved to the presser main body 2 from the winding guide piece 10. In the presser of the sewing machine supported so as to be able to be separated in the lateral direction, the guide portion 19 is extended forward in the feed direction A of the cloth W with respect to the winding guide piece 10, and the guide portion 19 is moved to the presser body 2. The cloth W is supported so as to be movable in the backward direction of the feed direction A.

Further, the guide unit 1 is provided by the urging means 23.
9 is also characterized in that the movement of the cloth W in the feed direction A is restricted. In addition to restricting the guide portion 19 from separating from the winding guide piece 10 in the lateral direction, the guide portion 19 is allowed to separate from the winding guide piece 10 in the horizontal direction by being elastically deformed. It is also characterized in that a regulating means 21 is provided which allows the guide portion 19 to move back and forth in the feed direction A in a state in which the lateral separation from the winding guide piece 10 is regulated.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 to 6, reference numeral 1 denotes a presser of a sewing machine for triple winding sewing, which is mainly composed of a presser main body 2 and a separator 3 attached to the presser main body 2. The fabric W is fed in the direction indicated by the arrow A in FIG. 1 and sewn. Hereinafter, the back side of the presser 1 in the fabric feeding direction A is referred to as a front portion, and the front side of the fabric feeding direction A is referred to as a rear portion. The lateral direction orthogonal to the direction A is referred to as the left-right direction.

At the rear of the presser body 2, there is provided a vertically extending mounting portion 4 which is removably mounted on a presser bar provided on the sewing machine so as to be vertically movable via mounting screws. On the lower left side, a support wall 4a is provided to protrude leftward. Further, the holding body 2 is provided with a holding portion 5 whose bottom surface is in sliding contact with the cloth W and presses the cloth W from above, and extends forward from the lower end of the mounting section 4. The front portion of the presser portion 4 is bifurcated by left and right protruding portions 6 and 7 protruding forward from both left and right sides.
A fabric feeding space 8 is formed between the left and right protruding portions 6 and 7 and has a concave shape from the front to the rear. A needle hole 9 for inserting a sewing machine needle is formed behind the fabric feeding space 8 in the vertical direction. It is formed in a penetrating shape.

In the dough feeding space 8, the dough W
And a winding guide piece 10 for guiding the end of the fold into a three-fold shape. The winding guide piece 10 is formed spirally from a spring plate, and a mounting piece 11 is integrally formed on the base side of the winding guide piece 10.
A pair of front and rear mounting screws 12, which penetrate the mounting piece 11 and are screwed into screw holes formed in the right protruding portion 7 of the holding portion 5,
13 detachably mounted on the right protruding portion 7.

The separating body 3 is formed on the left side of the holding body 2 so as to be along the body 2, and a supporting portion 14 attached to the supporting wall 4 a of the holding body 2 is provided at the rear portion. The support portion 14 includes a front wall 14a, upper and lower walls 14b,
14c, it is formed in an open U-shape rearward.
The support portion 14 has a support shaft 15 that penetrates the upper wall 14b and is screwed into a screw hole formed in the lower wall 14c.
Is attached. On the other hand, the support wall 4a is formed with an engagement groove 16 which is penetrated in the up-down direction and opened forward, and is long in the front-rear direction.
5 is inserted from the front side between the upper and lower walls 14b and 14c, whereby the separator 3 is supported on the presser body 2 so as to be rotatable around the vertical axis and to be movable in the front-rear direction. ing.

The engaging groove 16 may have a long hole shape extending in the front-rear direction. In the above-described structure, the engaging groove 16 into which the support shaft 15 is inserted has an open front. Therefore, the separation body 3 can be easily removed from the presser main body 2, and the maintenance and replacement of the guide portion 19 described later can be easily performed. The left protruding portion 6 of the presser main body 2 is formed to have a shorter protruding length than the right protruding portion 7, and extends so as to cross the front of the left protruding portion 6 and is provided at the front end of the left protruding portion 6. Extension part 1 to contact
7 is formed at the front of the separator 3. Separator 3
A knob 18 for operating the separation body 3 is provided at the front of.

On the right side of the extension portion 17, a guide portion 19 formed in a needle shape and located inside the spiral winding guide piece 10 and an arc shape open upward (projecting downward) are formed. Further, a concave guide portion 20 which is inclined so as to move downward as it goes rearward is provided. The guide portion 19 and the concave guide portion 20
And has a function of stabilizing the wound state (roundness) of the cloth W.

The guide portion 19 is provided in the feeding direction A of the cloth W.
The fabric W is extended forward so that the material W
The feeding guide A 1 is deeply inserted forward in the feeding direction A, and especially when sewing a sharply curved portion.
The stitching of the edge of the cloth W by the stabilization of 0 is stabilized. Further, since the guide portion 19 is deeply inserted in the feed direction A of the cloth W with respect to the winding guide piece 10, the tip 10 a of the winding guide piece 10 presses the separator 3. Body 2
The separating member 3 is rotated in the direction indicated by the arrow C in FIG. 1 about the axis of the support shaft 15 so that the guide portion 19 is moved sideways. When the guide member 19 is to be moved in the direction, the guide portion 19 interferes with the leading end portion 10a of the winding guide piece 10 to hinder the lateral movement of the guide portion 19. (In the direction B), the guide portion 19 becomes
The guide portion 19 is configured to be displaced to the front side from the interference part (10a) of 0 and to allow the lateral movement of the guide portion 19 in the direction away from the presser main body 2.

Although the guide 19 is formed integrally with the separator 3 in the illustrated example, it may be formed separately from the separator 3 and fixed to the separator 3 by appropriate means. The holding body 2 is provided with a regulating means 21 for regulating the separation of the guide portion 19 from the winding guide piece 10 in the lateral direction (the direction indicated by the arrow C in FIG. 1). The restricting means 21 is made of a plate material which does not elastically deform, and is attached to and fixed to the right protruding portion 7 of the holding portion 5 by a pair of front and rear mounting screws 12 and 13 for fixing the mounting piece 11. An extension 21b extending leftward from the rear end of the base 21a to above the separator 3 and a locking portion 21c which rises upward from the left end of the extension 21b and extends forward. Mainly composed.

The front end side of the engaging portion 21c is located on the left side of the knob 18 of the separator 3, and the arrow C of the separator 3
Restricts movement in the direction. In addition, this regulating means 21
Is formed of a plate material that does not elastically deform, so that interference between the guide portion 19 and the winding guide piece 10 is reliably prevented. In the above configuration, even when the locking portion 21c restricts the separation body 3 from separating from the pressing body 2, the separation body 3 (the guide portion 19) can move in the front-rear direction. When the knob 18 is displaced artificially in the direction of arrow B and the knob 18 is disengaged from the locking portion 21c, the separation body 3 is allowed to rotate in the direction of arrow C, and at this time, the guide 19 is also involved. It is configured so as to be separated from the interference portion 10a with the guide piece 10.

A biasing means 23 for biasing the separating body 3 rearward and holding the guide portion 19 at a predetermined position is provided on the presser body.
Is provided. The biasing means 23 is formed of a spring body formed by bending a single rope, and includes a coil portion 24 wound in a coil shape and one arm portion 25 extending forward from the coil portion 24. And the other arm 26 extending leftward from the coil 24.

At the front end of one of the arms 25, a mounting portion 25a wound in a circular shape is provided.
a is fixed to the holding portion 5 by a mounting screw 12 on the front side for mounting and fixing the mounting piece 11 and the like. Further, the front part of the one arm part 25 extends rearward from the mounting part 25a and is in contact with the right side of the rear mounting screw 13,
The rotation of the urging means 23 to the left side around the mounting portion 25a is restricted. The one arm 25 is raised upward in the middle, then extends rearward, and is connected to the coil 24 located on the rear right side of the presser 5.

On the left end side of the other arm portion 26, a support portion 1 of the separation body 3 is formed so as to protrude backward.
A contact portion 26a that elastically contacts the front surface of the fourth front wall 14a is provided. In a state where the contact portion 26a is in contact with the support portion front wall 14a of the separation body 3, the urging means 23 is twisted in the winding direction of the coil portion 24 (the direction indicated by the arrow D in FIG. 1), and The body 3 is biased backward. This contact part 2
The left end of 6 is inclined so as to move forward as it goes to the left.

The urging means 23 does not need to be formed of a rope, but may be formed of a leaf spring as shown in FIG. May be fixed. Further, the urging means 23 may be constituted by a compression or tension coil spring. Further, the urging means 23 may not be particularly provided. Instead of restricting the forward movement of the separation body 3 by the urging means 23,
A positioning mechanism for restricting the forward movement of the separator 3 so as to be releasable may be provided between the separator 3 and the separator 3.

The lower rear portion of the presser body 2 is constituted by a detachable tip 28. The tip 28 is fitted into a fitting step portion 29 formed behind the needle hole 9 on the bottom surface of the holding portion 5 to form a bottom surface of the holding body 2, and a rear end of the bottom wall portion 28 a It is formed in an L-shape when viewed from the side, with a locking wall 28b that stands up and is fixed to the rear surface side of the holding portion 5 with a screw 30.

The bottom wall 28a of the chip 28 is
Is provided at a position corresponding to the feed claw of the feed claw mechanism that feeds in the feed direction A. On the bottom surface of the bottom wall portion 28a, a groove portion 32 that is continuous with the longitudinal groove portion 31 formed on the bottom surface of the pressing portion 5 is provided. Is formed. A plurality of different types of the chips 28 are prepared, and are exchanged and used according to the condition of the sewn portion of the fabric W. The chip 28 having the groove 32 is mainly used for straight stitching, and a curved flat chip having no groove 32 is used for curve stitching. In the case of locally sewing a thick portion, the presser 5 rises, and the cloth W cannot be reliably held between the tip and the feed claw. Therefore, the cloth W cannot be satisfactorily fed. A chip provided with a ridge is used in place of the portion where is formed.

To set a sewing start portion when performing triple winding sewing with the presser 1 having the above-described structure, first,
After the presser foot 1 is retracted to the upper position and the separation body 3 is moved forward against the spring force of the urging means 23,
The guide 19 is separated from the winding guide piece 10 by being rotated around in the direction of arrow C. Next, the sewing start portion of the cloth W is wound in a three-fold shape and arranged below the presser main body 2, and then the presser main body 2 is lowered to position the rolled portion of the cloth W inside the winding guide piece 10.

Thereafter, the separating member 3 is returned by an operation reverse to the previous operation, and the guide portion 19 is rolled into the guide piece 1.
0 (inside the portion where the fabric W is involved).

[0026]

As described above, according to the present invention, the guide portion 19 is wound around the guide piece 10 in the feed direction A of the cloth W.
By extending forward, the end of the fabric W can be stably wound, and even when sewing a sharply curved part, the end of the fabric W can be stably wound in a good three-turn state. And the cloth W can be neatly sewn (three-roll sewing).

Further, the guide portion 19 is
Since the cloth W is supported movably backward in the feed direction A of the cloth W, the guide 19 is extended forward in the feed direction A of the cloth W with respect to the roll-in guide piece 10, so that the guide 19 is rolled and guided. When it is moved laterally from the piece 10, the winding guide piece 10
Even if it is impossible to move in the lateral direction due to interference with the guide member 19, the guide portion 19 is moved backward in the feed direction A of the cloth W with respect to the holding body 2 so that the guide portion 19 The position can be moved so as to deviate from the interference portion, whereby the guide portion 19 can be separated from the winding guide piece 10 by lateral movement.

The guide unit 1 is provided by the urging means 23.
By restricting the movement of the cloth W in the feed direction A backward, the guide section 19 can be moved rearward in the feed direction A of the cloth W only by applying an artificial action to the guide section 19, Separately, there is no need to perform an operation of releasing the movement restriction of the guide portion 19 to the rear in the feed direction A of the cloth W, and the guide portion 19 can be easily operated.

Further, the separation of the guide portion 19 from the winding guide piece 10 in the lateral direction is restricted, and the guide portion 19 is allowed to separate from the winding guide piece 10 in the horizontal direction by being elastically deformed. Roll-in guide piece 10 of guide portion 19
The restricting means 21 is provided to allow the movement of the cloth W in the feed direction A back and forth of the guide portion 19 in a state where the separation in the lateral direction from the guide portion 19 is restricted. It can be separated from the winding guide piece 10 in the lateral direction, and the winding guide piece 1 of the guide portion 19 is separately provided.
There is no need to perform an operation to release the regulation of separation from zero in the lateral direction, and the guide portion 19 can be easily operated.

[Brief description of the drawings]

FIG. 1 is a plan view of a presser according to an embodiment of the present invention.

FIG. 2 is a left side view of the presser according to the embodiment of the present invention.

FIG. 3 is a front view of a presser according to the embodiment of the present invention.

FIG. 4 is a right side view of the presser according to the embodiment of the present invention.

FIG. 5 is a bottom view of the presser according to the embodiment of the present invention.

FIG. 6 is a rear view of the presser according to the embodiment of the present invention.

FIG. 7 is a plan view of a presser according to another embodiment of the present invention.

[Explanation of symbols]

 2 Presser body 10 Roll-in guide piece 19 Guide part W Fabric A Fabric feed direction

Claims (3)

[Claims] 1. A press body (2) attached to a sewing machine.
Then, a spirally curved winding guide piece (10) is fixed so as to guide the end of the cloth (W) in a three-turn shape, and is positioned inside the winding guide piece (10). The guide portion (19) for stabilizing the winding state of the cloth (W) is separated from the holding body (2), and the guide portion (19) is moved to the holding body (2) from the winding guide piece (10). In the presser of the sewing machine which is supported so as to be detachable in the lateral direction, the guide portion (19) is wound around
The material W extends forward in the feed direction (A), and the guide portion (19) is supported movably in the feed direction (A) rear of the material (W) with respect to the holding body (2). A unique feature of the sewing machine foot. 2. The sewing machine according to claim 1, wherein the urging means (23) regulates the movement of the guide portion (19) in the feed direction (A) rearward of the cloth (W). Presser. 3. A winding guide piece (1) of a guide portion (19).
0), and the guide portion (1) of the guide portion (19) is elastically deformed.
0) is allowed in the lateral direction and the guide portion (1
A regulating means (21) is provided which allows the guide portion (19) to move back and forth in the feed direction (A) of the cloth (W) in a state in which lateral separation from the winding guide piece (10) of 9) is regulated. 3. The presser for a sewing machine according to claim 1, wherein