JPH06182072A - Folding cloth guide apparatus near needle of lock sewing machine - Google Patents

Abstract

PURPOSE:To provide a folding cloth guide device which has a structure capable of performing a lock sewing of a folded end part of a cloth end such as a skirt part of a curtain cloth (curtain fabric), a lug part thereof and other parts. CONSTITUTION:This apparatus is made up of a full down wrapper 8 to fold in four cloth end C of a curtain mounted on the free end side of a sewing keep metal 4. a clearance for passage of a folded cloth A formed between the full down wrapper 8 and a sewing table, a thin part 41 provided on the rear of a keep metal 4 and on the side of a needle 7 and a pad member 9 having a guide pick 92 to be inserted into the thin part 41 and a stepped side wall 91 to guiding the folded side of the folded cloth 4. Thus, the folded cloth meeting the optimum folding relation is supplied neatly below the needle. This can prevent erratic movement, accidental bending and the like of the folded cloth, also accomplishes beautiful lock sewing handily and accurately requiring no skill and secures correct positional relation of a folded end part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folded end of a cloth end (hereinafter simply referred to as a bent end) such as a hem portion, an ear portion, and other winding and sewing portions of a curtain cloth (curtain material). The present invention relates to a folding cloth guide device in the vicinity of a sewing machine needle, which has a structure in which lock sewing can be performed easily and beautifully.

[0002]

2. Description of the Related Art Conventionally, when a bent end is sewn, from the viewpoint of quality improvement and aesthetics. The seam is not noticeable,
The so-called lock stitch is used, but as a guide device for the folding cloth near the needle of the sewing machine in this lock stitch, the presser foot of the sewing machine and the rectangular shape provided on the free end side of the presser foot are used. It is composed of a patch member (patch ruler) and a full-town wrapper for feeding a folding cloth to the presser foot and the patch member.

Therefore, the cloth (folded cloth) folded by the full town trumpet is moved to the needle position only after passing through the side wall of the padding member and relying only on the guide of the presser foot and the upper and lower feed pieces of the cloth. Lock stitched with a needle. The cloth edge after this lock sewing is sent out to the rear of the presser foot,
It is sequentially sent out of the cloth plate through a guide roll (not shown). At present, the lock sewing is sequentially performed through such sewing operations and procedures.

[0004]

Since the guide between the presser foot and the upper and lower feed pieces of the cloth is mainly guided inside the lock sewing bent end, it should be guided most correctly. It does not reach the bent end of the lock stitch. Therefore, the bent end is not properly guided (not fed), and in some cases, it is likely to be bent, and as a result, beautiful and high quality lock sewing cannot be performed. , And so on. In addition, it takes a great deal of skill and attention to manufacture a product with a constant quality and excellent commercial value with a conventional lock stitch sewing machine, which causes problems such as securing personnel and facilitating work. In terms of
This is where many challenges can be considered.

[0005]

In view of the above, the present invention provides
The folding cloth folded with the full town trumpet is sent to the lower part of the needle in an orderly manner, and the bent end can be correctly and beautifully sewn on the lock. The following configuration was adopted for the purpose of being able to guide.

That is, the folding cloth guide device in the vicinity of the lock sewing machine needle of the present invention is a full town wrapper which is attached to the free end side of the sewing machine presser foot and folds the cloth edge of the curtain into four folds. A gap for passing the folding cloth formed between the trumpet and the sewing machine table (a cloth plate may be used), a thin portion provided on the back side of the presser foot and on the needle side, and inserted into this thin portion. A guide beak and a stepped side wall that guides the folding side of the folding cloth, and a pad member attached to the insertion side of the sewing machine.

[0007]

Next, the operation of the present invention (lock stitching, comb stitching) will be described.

First, as shown in FIG. 5, the full-town wrapper main body is moved along the guide rod toward the front side (toward the sewer), and the cylinder provided in the full-town wrapper main body is operated (piston rod). Of the trumpet), and moves the trumpet lower part to the right in the drawing (advance). As a result, the full-town wrapper main body is opened, so that the flat upper part of the upper part of the wrapper, which is composed of the upper and lower sides and the middle side, has a flat shape (however, the shape of the shape is modified as shown in the drawing). ), The end of the cloth, that is, the cloth end (hereinafter, simply referred to as the cloth end) is inserted into the shape of () as shown in the drawing. That is, the cloth edge is folded into a V shape. If the full-town wrapper body has already been moved or opened to the front side, the cloth edge is inserted as it is.

After that, the cylinder is operated (the piston rod is retracted), and the trumpet lower part is moved to the left in the drawing (it is referred to as the retract). As a result, the cloth end folded in the V shape is further folded to form a desired four-fold folded cloth (hereinafter, simply referred to as a folded cloth) (see FIG. 6).

Then, subsequently, the folding cloth and the full-town wrapper main body are moved to the front side (referred to as the sewing machine side), and the full-town wrapper main body is lightly stopped against the wrapper mounting plate, and the folding cloth is attached to the wrapper. Go over the plate and reach the pad.

The form, usage (operation / procedure), etc. of the full-town wrapper main body are examples, and other configurations (mechanisms) may be used. The point is that any other full-town wrapper or full-town wrapper main body in which the folding cloth is guided to the pad member, or manual work may be used.

As described above, the folding cloth reaching the pad member has its bent end portion guided by the stepped side wall of the pad member, and as shown in FIG. Set so that the so-called lock stitch is easy to perform and is finished beautifully so that it slightly protrudes from the lower bent end (that is, the state of the upper and lower bent ends having different phases). .

After the upper and lower folding ends are formed in this way, the folding cloth is guided to the guide tongue provided on the padding member and the stepped side wall, and while maintaining this orderly state, Guided between the cloth plate of the sewing machine table and the presser foot. At this time, in the present invention, since the guide beak is formed on the contact member, the folding cloth is properly folded in four, and is in the state of the upper and lower folding end portions having different phases, Between the foot and the presser foot.

Therefore, in the present invention, in the conventional device,
Trouble in transporting the folding cloth that occurs as it is, that is,
There is almost no abnormal state such as detouring (delusion) or bending before reaching the position just below the needle. Further, in the present invention, in the conventional device, it is impossible to form a protruding relationship in which the phases of the upper and lower bent ends are different from each other, and this excellent phase relationship can be achieved even immediately below the needle. It has a structure that can be maintained.

As described above, the folding cloth guided to the cloth plate and the presser foot is fed through the upper and lower cloth feeding devices mounted on the sewing machine,
Guided just below the needle. And up to this part, the state of the upper and lower bent ends that are orderly and different in phase is maintained, but this role is performed through the guide beak, and this guide beak is used. By,
The structure is reliable and simple. After that, lock sewing is applied to this guided folding cloth, and subsequently,
Lock-sewn folding cloth (lock-sewn edge)
Is sent to the guide roll side (not shown) and then sent to the outside of the cloth plate. On the other hand, immediately below the needle, the next folding cloth is sequentially and smoothly supplied as described above.

Since the lock sewing shown in FIG. 7 is performed through the above-described operations and procedures, the sewn folding cloth is unfolded (see FIG. 8).

In the subsequent production and lock sewing of the new curtain cloth folding cloth, the forward operation and procedure are repeated. The operations and procedures described in detail above are merely examples, and it goes without saying that the operations and procedures are not limited to this description and illustration.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 is a sewing machine table, 2 is a cloth plate provided on the sewing machine table 1 (hereinafter the same), 3 is the sewing machine,
4 is the same presser foot, 5 is the upper surface (front surface) of the same cloth (folding cloth)
An upper feeding device for feeding the folds, 6 is a contact member for guiding the folded end of the folding cloth, and 7 is a needle of the sewing machine 3.

The full-town wrapper 8 of the present invention is directly fixed to the presser foot 4 and is provided so as to form a gap B between the sewing machine table 1 and the cloth plate 2 which allows the folding cloth A to pass therethrough. , Its structure is as follows.

That is, the full-town wrapper 8 has a mounting rod 81 extending from the free end side of the presser foot 4, and the mounting rod 81.
And a two guide rods 83 extending from the trumpet mounting plate 82.
And a full-town wrapper main body 84 attached to the guide rod 83.

A preferred example of the full-town trumpet main body 84 will be described. A flat-shaped trumpet upper part 84a slidably provided on the guide rod 83 and a cylinder provided at the trumpet upper part 84a. 84b
And a trumpet lower component 84c supported by the piston rod 84b 'of the cylinder 84b and overlapping the trumpet upper component 84a, and an upper side 84a1 constituting the trumpet upper component 84a. And the middle side 84a2 and the lower side 84a3 fold the cloth edge of the curtain fabric C into a V shape, and then further folds the retractable lower part 84c of the wrapper, that is, by overlapping the lower side 84a3 to the lower side, as desired. It has a structure in which a folded cloth in a folded state is formed. Of course, the configuration of the full town wrapper main body 84 and the full town wrapper 8 is an example. In short, as described above, another full-town wrapper that forms a folding cloth at the fabric edge, another full-town wrapper body, or a manual construction may be used.

In the present invention, the back side 4a of the presser foot 4 on the sewing machine needle side (referred to in FIG. 3 is the right side of the presser foot. A thin portion 41 into which the beak is inserted is formed.

In the figure, reference numeral 9 denotes a backing member (a backing ruler) whose base end is attached to the hand surface side of the sewing machine 3, and the longitudinal end of the backing member 9 reaches the sewing machine needle side of the presser foot 4. In addition, a stepped side wall 91 is provided at this tip. Further, a guide beak 92 extending along the side surface of the stepped side wall 91 is provided, and the guide beak 92 reaches the thin portion 41 of the presser foot 4 as described above.

Therefore, the upper step 91 of this stepped side wall 91
a is the lower end 9 of the folding end A1 of the folding cloth A.
The lower folding ends A2 of the folding cloth A are attached to 1b, respectively, and as shown in FIG. 4, the upper folding end A1 projects slightly from the lower folding end A2 and is used for lock sewing. The structure is such that an optimal folding relationship is formed.

The optimum folding relationship is structured such that the optimum folding relationship is carried in order under the needle 7 via the guide beak 92 and the presser foot 4.

Reference numeral 93 in the drawing denotes a stepped side wall 91 of the contact member 9.
The guide tongue extended further is inserted between the upper and lower folding ends A1 and A2 as shown in FIG. 4, and serves for the above-mentioned optimum folding relation type, and is provided as necessary.

In the figure, 10 is a lock sewing thread, C is a curtain fabric, and D is a developed curtain.

[0029]

As described in detail above, according to the present invention, the full-town wrapper is provided on the free end side of the presser foot, and the guide beak of the contact member having the stepped side wall is inserted into the thin portion on the back surface of the presser foot. However, since the folding cloth having the optimum folding relationship formed through the stepped side wall of the padding member is surely guided below the sewing machine needle through the guide beak, it has the following effects.

(1) Optimal folding-related folding cloth is neatly supplied below the needle.

(2) It is possible to prevent delusion and bending of the folding cloth.

(3) Beautiful lock sewing can be performed simply and surely without requiring skill.

(4) The correct positional relationship of the bent ends can be ensured.

(5) A conventional sewing machine can be installed with a slight modification, which is very practical.

(6) The structure is simple, no failure occurs, and its operation is simple.

[Brief description of drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is an enlarged perspective view showing an example of a presser foot.

FIG. 3 is an enlarged plan view of a main part.

FIG. 4 is an enlarged front view showing the relationship between the contact member and the folded end portion of the folding cloth.

FIG. 5 is an enlarged front view illustrating a folding process of the full-town wrapper.

FIG. 6 is an enlarged front view illustrating the completion of folding of the full town wrapper.

FIG. 7 is an enlarged perspective view showing a state where lock sewing is completed.

FIG. 8 is a schematic view showing a developed state of the curtain.

[Explanation of symbols]

 1 sewing machine table 2 cloth plate 3 sewing machine 4 presser foot 5 upper feed device 6 contact member 7 needle 8 full town wrapper 81 mounting rod 82 wrapper mounting plate 83 guide rod 84 full town wrapper main body 84a upper part of wrapper 84b cylinder piston rod 84c Lower part of trumpet 9 Resting member 91 Stepped side wall 92 Guide beak 93 Guide tongue A Folding cloth A1 Upper folding end A2 Lower folding end B Gap C Fabric D Curtain

Claims (2)

[Claims] 1. A full-town wrapper attached to the free end side of the sewing machine presser foot and folding the cloth edge of the curtain in four, and a gap for passing the folding cloth formed between the full-town wrapper and the sewing machine table. And a thin-walled portion provided on the back side of the presser foot and on the needle side, a guide beak inserted into the thin-walled portion, and a stepped side wall for guiding the folding side of the folding cloth. Folding cloth guide device in the vicinity of the needle of a lock stitch sewing machine, which is composed of a pad member attached to the side of the lock sewing machine. 2. A full-town wrapper main body constituting the full-town wrapper according to claim 1, a mounting rod extending from the free end side of the presser foot, and a wrapper mounting plate mounted horizontally on the mounting rod. A guide rod extending from the free end side of the trumpet mounting plate, a flat-shaped trumpet upper part that is slidably attached to the guide rod, and a lower side of the trumpet upper part that overlaps with each other. In the vicinity of the needle of the lock stitch sewing machine, which is composed of a plate-shaped lower part of the trumpet forming a folded cloth in four-fold with the upper part of the trumpet, and a cylinder for horizontally moving the lower part of the trumpet. Foldable cloth guide device.