JPS624309Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a pleat cloth guide device in a sewing machine that guides two pieces of pleated cloth to the sewing machine sewing section so that they are overlapped vertically and sewn along the pleat lines. Regarding.

Conventionally, when sewing pleated skirts, etc., it was necessary to sew two pieces of cloth with pleats and overlap them vertically while aligning the pleat lines. Jitsugan Showa 56
104772 (specification and drawings) is known, and as shown in FIG. 1, this device is installed on the sewing machine bed surface ( A base plate (lower cloth guide) 1 fixed to a base plate (not shown), a lower cloth guide provided on one side edge of the base plate 1 and formed in a V-shaped groove opening upward along the cloth feed line passing through the sewing machine seam part 2. A first frame 3 whose proximal end is supported on the base plate 1 so as to be rotatable about an axis along the cloth feeding direction; a lower end supported on the free end of the first frame 3 and placed within the V-groove of the lower cloth guide 2; a plate 4 whose edges can be fitted;
A second frame 5 is disposed above the first frame 3 and has its proximal end supported on the base plate 1 so as to be rotatable about an axis along the cloth feeding direction; The lower cloth guide 2 has an upper cloth guide 6 formed in the shape of an inverted V-shaped groove opening downward along the cloth feed line so as to fit the upper edge.
The pleat lines of the upper and lower fabrics are inserted between the and plate 4 and between the plate 4 and the upper fabric guide 6 so as to match, and the pleat lines are aligned by interlocking the lower fabric guide 2, the plate 4, and the upper fabric guide 6. The upper and lower fabrics were held together so that they remained aligned while being guided to the sewing machine seam section. However, with conventional methods like this,
As shown in FIG. 6, when inserting the upper and lower fabrics W1 and W2, the pleat lines (creases) l ₁ and l ₂ of the pleats are on the top,
Instead of following the V-shaped or inverted V-shaped grooves of the lower fabric guides 2 and 6, it becomes L-shaped, and the folds l ₁ and l ₂ are shifted from the needle drop point between the upper and lower fabric guides 2 and 6 and the plate 4. If the pleat lines of the upper and lower fabrics do not match and are sewn in this state, the pleat lines of the upper and lower fabrics will not match and become irregular, resulting in a defect that significantly impairs the quality of the product.

This invention aims to eliminate the above-mentioned conventional drawbacks.

An embodiment of this invention will be described with reference to the drawings, and the same reference numerals will be used to denote the same components as in the prior art, and the explanation will be omitted.

Reference numeral 7 designates an engaging portion that protrudes from the first frame (partition body) 3 toward the front side of the cloth feed, and 8 designates a second frame (upper This is an engaging portion that protrudes from the cloth guide 5 toward the front in the cloth feeding direction. Control bodies 9 and 10 are respectively supported on the sewing machine bed so as to be horizontally movable along the direction crossing the cloth feeding direction.
is opposite to the lower end of the engaging part 7, and on its upper surface,
A lower part 9a that holds the first frame 3 so that the lower edge of the plate 4 is in a lower position (lowered position) that fits into the groove of the lower cloth guide 2, and a plate 4 provided ahead of the lower part 9a.
The other control body 10 forms a high part 9b that rotates and holds the first frame 3 upward so that it is at an upper position (raised position) spaced apart above the groove of the lower cloth guide 2, and the other control body 10 forms an engaging part. 8, and on its upper surface there is a plate 4 when the first frame 3 is in the downward position.
A lower part 10 that holds the second frame 5 in a lower position where the groove of the upper cloth guide 6 fits into the upper edge.
a, a high part provided ahead of it and rotatably holds the second frame 5 so that the groove of the upper cloth guide 6 is in an upper position above the upper edge of the plate 4 when the first frame 3 is in the upper position; 10b. A guide plate portion 4a is fixed to the front end of the plate 4 on the front side in the cloth feeding direction, protruding between the guides 2 and 6 from an intermediate portion in the vertical direction and parallel to the cloth feeding surface. As shown in FIG. 6, when the plate part 4a is not present, for example, the pleat fold _l2 of the upper fabric W2 becomes L-shaped, and the fold lines _l1 and _l2 of the upper and lower fabrics are shifted from the needle drop point, and the plate part 4a is to prevent this, so that the folds l ₁ and l ₂ of the pleats of the upper and lower fabrics W ₁ and W ₂ enter along the grooves of the upper and lower fabric guides 2 and 6, that is, the lower fabric W ₁ is V-shaped,
Guide the upper cloth W ₂ so that it forms an inverted V shape (7th
figure).

11 and 12 are electromagnets, and connecting rods 13 and 14
are connected to the control bodies 9 and 10 separately through the energizing means, and when each is energized, the connecting rods 13 and 14 are pulled to move the control bodies 9 and 10 to the right in FIG. The engaging portions 7 and 8 are engaged with each other. The first and second frames 3 and 5 each have a leaf spring 15 that engages with the upper end surface and applies elastic force to the downward position.
15 (only one is shown).

In FIG. 5, the electromagnets 11 and 12 can be independently energized and deenergized by separate manual switches SW ₁ and SW ₂ (for example, operable by pedals, knees, etc.). In particular, when the electromagnet 11 that operates the first frame 3 is energized, the diode D is connected so that the other electromagnet 12 is also energized at the same time.

This invention has the above-mentioned configuration, and when both electromagnets 11 and 12 are de-energized, the control bodies 9 and 10 cause the engaging parts 7 and 8 to engage with the lower parts 9a and 10a as shown in FIG. 4A. As a result, the first and second frames 3 and 5 are in the lower position as shown in FIG. 3A, and in this case, the circuit state shown in FIG. 5 is achieved. When switches SW ₁ and SW ₂ are switched to side a to insert cloth, both electromagnets 11 and 12 are energized, and both control bodies 9 and 10 are energized.
is pulled to the right in FIG. Rotated. After arranging the pleat wires to face each other between the lower cloth guide 2 and the plate 4, when the switch SW ₁ is switched to the b side, the electromagnet 11 is deenergized and the control body 9
returns and the engaging portion 7 engages with the lower portion 9a (fourth
In FIG. B), only the first frame 3 is in the lower position (FIG. 3B), and the lower cloth is held between the V groove of the lower cloth guide 2 and the plate 4. The upper cloth is placed on the lowered plate 4 of the first frame 3 with the pleat lines aligned, and the switch SW ₂ is switched to the b side to deenergize the electromagnet 12 and return the control body 10 (the fourth In FIG. A), the second frame 5 is in the lower position and clamps the upper cloth between the plate 4 and the inverted V groove of the upper cloth guide 6.
Leaf springs 15, 15 that engage the upper end surfaces of both sides separately.
Accordingly, the first by the extinguishing force of the electromagnets 11 and 12,
This prevents vibrations when the second frames 3 and 5 rotate (open and close), and also ensures that the upper and lower cloths are held at the lower positions of both frames 3 and 5.

Further, when the sewing machine is driven and the upper and lower cloths are sewn and sent forward in the cloth feeding direction, when the upper and lower cloths enter between this guide device, the plate portion 4a is shown in FIG.
The folds l 1 and l 2 are guided outward by the folds l ₃ , l' ₃ , l ₄ , and l' ₄ of the pleats, and the folds l ₁ and l ₂ are opposed to the upper and lower edges of the plate 4 .

Note that in this embodiment, both electromagnets 11 and 12
In this circuit, in connection with the operation of the manual switch that controls the electromagnet for moving the presser foot up and down, both frames 3 and 5 are connected when lifting the presser foot. A circuit is added to control the electromagnets 11 and 12 so that they are in the upper position and in the lower position when the presser foot is lowered, and both switches are set to the lower position.
It is also possible to configure SW ₁ and SW ₂ to have priority over the presser foot lifting switch.

Furthermore, in this embodiment, the control bodies 9 and 10 are moved along the direction crossing the cloth feeding direction, but
The control bodies 9 and 10 may be formed in a circular shape, and a high portion may be formed along the circumferential direction of the control bodies 9 and 10, and the rotation may be controlled by a rotary solenoid or the like.

Further, in this embodiment, the control body 9,
10 is shown in which the movement is controlled, but it may also be moved by hand.

As described above, according to this invention, a guide plate part 4a is provided at the tip of the partition plate in the cloth feeding direction and protrudes parallel to the cloth feeding surface between the upper and lower cloth guides from the middle part in the vertical direction. As a result, the pleat lines of the upper and lower fabrics are always inserted along the grooves of the upper and lower fabric guides (upper and lower fabric guides), so the pleat lines and needle drop points are always aligned and the stitches are neatly sewn, improving the quality of the product. The effect of

[Brief description of the drawings]

Fig. 1 is a perspective view of a conventional pleat sewing cloth guide device, Fig. 2 is an opening/closing mechanism of this embodiment, and Figs. 3 A to C.
is an explanatory diagram showing the opening and closing states of the first and second frames 3 and 5, FIGS. 4A to 4C are explanatory diagrams of the operation of both control bodies 9 and 10 corresponding to FIGS. The circuit diagram, FIG. 6 is an explanatory diagram showing the folds of the pleats of the upper and lower cloths when the plate part 4a is not provided, and FIG. 7 is an explanatory diagram showing the folds of the pleats of the upper and lower cloths when the plate part 4a is provided. be.

Claims (1)

[Scope of Claim for Utility Model Registration] A lower cloth guide 1 disposed close to the front side of the sewing machine seam in the cloth feed direction and having a V-shaped groove 2 along the cloth feed line passing through the seam, and disposed above the lower cloth guide, The upper fabric guide 5 has an inverted V-shaped groove 6 facing upwardly facing the V-shaped groove at its tip, and the base end is supported on the machine frame so as to be rotatable about an axis along the fabric feeding direction, the lower fabric guide and the upper fabric guide. A plate 4 is disposed between the cloth guide and can be fitted and stands up with the upper and lower edges facing the grooves of the upper and lower cloth guides, and the base end is centered on an axis parallel to the cloth feeding direction. The partition body 3 is rotatably supported on the machine frame, and the guide plate portion 4a is provided in front of the plate of the partition body in the cloth feeding direction and projects parallel to the cloth feeding surface between the upper and lower intermediate portions and the lower cloth guide. , A pleat cloth guide device in a sewing machine equipped with.