KR0178464B1 - Device for preventing sewing slippage of object to be sewn on sewing machine - Google Patents

Abstract

Means for preventing the sewing slip of the sewing object of the conventional sewing machine have not been satisfied. Thus, the needle plate 5 having the needle hole 0 through which the needle 4 penetrates the sewing machine, and on the needle plate 5 on the square and both sides of the needle hole 0 with respect to the advancing direction of the object P, Q. The sewing machine of the sewing machine provided with the sending and receiving gear 16 which presses out and the pressing tool 7 which presses the to-be-sealed object at the time of sewing, are located in the upper part of the needle hole 0, and are formed. In the sewing slip prevention device of the object, the other two racks (16a) of the sending teeth (16) corresponding to the rack (16b) located in front of the needle hole (0) in the forward direction of the sending teeth (16) While setting higher than the sending values 16a and 16c corresponding to (16c), the convex portion 5d is formed in the portion immediately after the needle hole 0 with respect to the advancing direction of the needle plate 5. It is characterized by being installed.

Description

Sewing slippage prevention device of the sewing material of the sewing machine

1 is a front view illustrating a part of a sewing machine including a sewing slip prevention device of a sewing object of a sewing machine of an embodiment of the present invention.

2 is a plan view illustrating a part of a sewing machine including a sewing slip prevention device of a sewing object of an embodiment of the present invention.

3 is a plan view of the needle plate used in the sewing slip prevention device of the sewing machine of one embodiment of the present invention.

4 is a cross-sectional view taken along line S-S of FIG. 3 as a needle plate.

Figure 5 is a sender for use in the sewing slip prevention device of the sewing material of the sewing machine of one embodiment of the present invention (a) is a plan view, (b) is a side view.

6 is a conventional sending value, (a) is a plan view, (b) is a side view.

7 is an enlarged cross-sectional view of S-S of FIG. 2 for explaining the papermaking action of the sewing slip prevention device of the sewing material of the sewing machine of one embodiment of the present invention.

8, 9 and 10 are enlarged cross-sectional views for explaining the papermaking action of FIG.

* Explanation of symbols for main parts of the drawings

0: needle hole 4: needle

5: needle plate 5D: convex portion

6: pressing the cloth 7: pressing bracket

16: Sending Value 16a, 16c: Rack (Sending Value)

16b: Rack (Send) P, Q: Fabric (Sewn)

The present invention relates to a sewing slip prevention device of a sewing object of a sewing machine for sewing a cloth. Conventionally, various means have been studied in order to prevent the sewing slip of the sewing object of the sewing machine, but various defects occur depending on the material of the sewing cloth, the braiding method, etc., and no satisfactory one has been developed.

In recent years, shape memory materials have been developed and are being used as materials for shirts and the like. Since this material must be shaped by hand and ironed after sewing, it is impossible to correct sewing slip by the conventional method. Thus, a more useful anti-slip device for sewing the sewing object of the sewing machine was expected.

In view of the above circumstances, the present invention eliminates the hassle in the type and braiding method according to the material and thickness of the forge, and provides a simple sewing slip preventing means that does not affect the stretching of the forge. The purpose of this invention is to provide a sewing slip prevention device of the sewing material of the sewing machine that can be usefully applied to new materials that are newly developed.

In the sewing slip prevention apparatus of the to-be-sealed object of the sewing machine of Claim 1, the needle board in which the needle hole which a needle penetrates in a sewing machine is formed, and the front and both sides of the said needle hole with respect to the advancing direction of a to-be-sealed object. In the sewing slip prevention device of the sewing machine of the sewing machine equipped with a cloth pressing device which is placed on the tip end and the pressing bracket which presses the object to be sewing when sewing on the needle plate in the room and is positioned at the top of the needle hole. In the sending value, the sending value located just in front of the needle hole with respect to the advancing direction is set higher than other sending values, and a convex portion is formed at a portion immediately after the needle hole with respect to the advancing direction of the needle plate. A back part is provided, It is characterized by the above-mentioned.

In this sewing anti-slip device, a sewing object is sandwiched between the sending hole where the needle hole is located immediately in front of the screen of the pressing bracket, and the convex portion formed on the lower surface of the pressing bracket and the needle plate is to be sealed. Because of the fitting, the tension is pushed in the front and back directions of the object to be sealed and the needle hole by the movement of the pressing tooth.

In the stitch anti-slip device according to claim 2, the pressing tool of the cloth pressing restricts the rotational position so that the lower surface thereof becomes the horizontal horizontal position, and at the center of the horizontal axis perpendicular to the traveling direction. And rotationally supporting the forward line or the upward direction with respect to the advancing direction, simultaneously with the first elastic member so as to be in the substantially horizontal position, and tipping the tip of the pressing bracket. And a second elastic member that is tensioned upward in response to the elastic force of the first elastic member, and a elastic force adjusting mechanism for adjusting the elastic force of the second elastic member is installed.

The sewing object is sandwiched between the rear end of the pressing tool and the convex portion formed in the needle plate by the second elastic member.

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 are diagrams showing embodiments of the present invention. In FIG. 1 and FIG. 2, the code | symbol 1 is a part of sewing machine, and comprises the arm 2 and the table 3. As shown in FIG. The needle 4 is formed in the lower part of the arm 2, and the table 3 is provided with the needle plate 5 in which the needle hole 0 through which the needle 4 penetrates is formed horizontally. The needle 4 is configured to reciprocate on the elevating center line XX perpendicular to the needle plate 5.

As shown in Figs. 3 and 4, the needle plate 5 has a needle hole 0 in the front and on both sides of the direction of travel of the workpiece (arrow A in the figure). do. Three guides 5a, 5b, and 5c are formed outside the inner side and the center portion is short. Moreover, 5 d of convex parts protrude at the upper surface 5e of the needle board 5, for example by 1 millimeter behind the said advancing direction back of the needle board 5. The convex portion 5d has a length of about 6 millimeters in the direction of the firing table A, and the front part of the advancing direction rises, and has a sloping cross-sectional shape that is gently sag toward the rear from the front end.

As shown in FIG. 1, the upper side of the needle plate 5 is comprised of the cloth press 6 which elevates parallel to the lifting center line XX, and the pressing bracket 7 is provided at the tip of the cloth press 6. Consists of. The pressing bracket 7 is configured to restrict the rotational position so that the lower surface 7b of the pressing bracket 7 becomes a substantially horizontal position, and is configured to rotate around the shaft 8. Between the cloth press 6 and the press fitting 7, a spring 9 which exerts a resilient force around the shaft 8 so that the tip 7a of the press fitting 7 can be forced downward. 1 elastic member) is provided.

A spring 10 (second elastic member) is connected to a screw 11 securely fixed to a part of the arm 2 at the tip end 7a of the pressing tool 7. As for the spring 10, the tip of the pressing tool 7 is tensioned upward in response to the spring force of the spring 9. That is, the rear end 7c side is connected by giving a shot so as to receive a force at the bottom. The screw 11 is rotated to adjust the spring force of the spring 10. The spring 10 constitutes a spring force adjusting mechanism.

Below the needle plate 5, a drum 12, a transfer rod 13, an upper and lower regulating plate 14, and a sending bar 15 are provided. Inside the book 12, a bobbin (not shown) is provided to rotate freely. In addition, the transfer rod 13 and the upper and lower control plates 14 are installed so as to rotate left and right, respectively up and down. One end of the cradle 15 is connected to the transfer rod 13, and the other end of the cradle 15 is connected to the upper and lower adjustment arms 14. On the upper surface of the cradle 15, the cradle 16 is formed in such a manner as to hold one side.

As shown in FIG. 5, the sending tooth 16 has three racks 16a, 16b, and 16c having different lengths of guides 5a, 5b, and 5c provided on the needle plate 5 so as to protrude on the upper surface. It is installed. Among the three racks, the center rack 16b is set to be 0.2 mm higher than the other two racks 16a and 16b.

When sewing the fabrics P and Q by the above-described sewing machine, as shown in FIG. 7, the fabric PQ is placed on the needle plate 5 and the pressing bracket 7 is lowered to make the fabrics P and Q be the needle plate ( It becomes in the state inhibited between the upper surface 5e of 5). At this time, the lower surface 7b of the pressing tool 7 is sandwiched between the upper surface 5e of the needle plate 5 and the fabrics P and Q so as to be substantially parallel.

In addition, the sewing machine needle is in a state of starting to descend from the most elevated position of the lifting stroke. Then, the sending tooth 16 laid on the upper surface of the sending bar 15 is located below the surface 5e of the needle plate 5, and transversely in the direction opposite to the arrow A with respect to the lifting center line XX of the needle 4 (橫行) to the starting position.

After that, the needle 4 descends to the lifting center line XX, and starts sewing while rising after passing through the fabrics P and Q. In the meantime, the sending tooth 16 moves laterally in the opposite direction to the arrow A with respect to the lifting center line XX of the needle 4. And, as shown in FIG. 8, the sending tooth 16 is in the position where the rack 16b exists below the shaft 8. As shown in FIG. Thereafter, as shown in FIG. 9, after the needle 4 is pulled out of the fabrics P and Q, the sending tooth 16 is raised to form a guide hole formed in the needle plate 5 of the racks 16a, 16b, and 16c. In 5a, 5b, and 5c, it will be in the state which appeared on the upper surface 5e of the needle plate 5. FIG. At this time, the pressing bracket 7 is pushed up by the racks 16a, 16b, and 16c through the fabrics P and Q on the lower surface 7b, and protrudes from the upper surface 5e of the needle plate 5 of the rack 16b. Move upward by one length.

At this time, the pressing bracket 7 is pushed upward by the sender 16, but since the rack 16b in the center is set 0.2 mm higher than the racks 16a and 16b on both sides, the rack 16b is used. Mainly from Therefore, it is mainly pinched by the lower surface 7b and the rack 16b of the pressing tool 7.

Moreover, as shown in FIG. 10, the sending tooth 16 moves to the arrow A direction in the state which descended from the upper surface 5e of the needle board 5 in the lower position of the needle 4 in the middle. As a result, the fabrics P and Q are mainly restrained by the lower surface 7b and the rack 16b of the pressing tool 7, and thus are stretched in the direction of the arrow A, and sent by the moving distance of the sending tooth 16.

Here, since the pressing bracket 7 is rotated by the shaft 8 and is elasticated by the spring 10, the rack 16b moves in the direction of the arrow A, and the tip 7a is moved by the shaft 8. Receive the force in the direction of rotation from the top surface around. As a result, the pressing tool 7 is in a state where the rear end 7c is inclined downwardly by a small amount in a state where the lower surface 7b is substantially parallel to the upper surface 5e of the needle plate 5. Accordingly, the fabrics P and Q are pressed against the convex portions 5d formed on the rear end 7c and the upper surface 5e of the needle plate 5.

Herein, the fabrics P and Q are pressed most strongly by the rack 16b of the sending tooth 16, so that when the sending tooth 16 crosses, it is pressed most strongly just before the needle hole 0 to be stretched. In addition, since the fabrics P and Q are sandwiched between the concave portions 5d formed on the upper surface 5e of the needle plate 5 and the lower surface 7b of the pressing tool 7 immediately after the needle hole 0. Between these two points, the fabric P and the fabric Q move in the direction of arrow A without slipping or pulling.

As described above, in the sewing slip prevention device of the sewing object of the sewing machine, when the sending tooth 16 crosses, the fabrics P and Q are pressed more strongly just before the needle hole 0 to tension. Further, the fabrics P and Q are fitted to the convex portions 5d formed on the upper surface 5e of the needle plate 5 and the lower surface 7b of the pressing tool 7 immediately after the needle hole 0. Because of this, the fabric P and the fabric Q are moved more tightly between these two points. Therefore, the sewing machine needle 4 descends and sews without slipping or dragging.

In addition, although the rack 16b of the sending tooth 16 was set 0.2 millimeters higher than the rack 16a, 16c, it can also set to arbitrary height according to the kind and thickness of fabric P, Q.

In addition, the convex part 5d formed in the upper surface 5e of the needle plate 5 can also be made into the dimension of the same state.

Therefore, as shown in FIG. 6, although the conventional sending gear G has three racks Ga, Gb, and Gc having the same height, the racks Ga and Gc of the sending gear G have the same height. As shown in FIG. 5, the sending value 16 which set the rack 16a high may be produced.

In addition, in the above embodiment, the needle 4 is limited to a sewing slipper of the object to be sewing. You may use it for a needle sewing machine. In addition, the same effect can be obtained even when used in a variety of different sewing machines, such as a log machine for sewing a chain.

According to the sewing anti-slip device of the sewing object of the sewing machine of the present invention, the sending value located just in front of the needle hole with respect to the moving direction of the sewing object is set higher than other sending values and at the same time the needle is pressed against the moving direction of the needle plate. Since a to-be-sealed object is tensioned before and after a needle hole by providing a convex part just behind a hole, as a simple structure, it is a simple structure, a kind of material and thickness of a cloth, a braiding method, and a cloth There is the effect of the reliable slip slip effectively to a new material newly developed without affecting elongation such as), and sewing materials are sewing thin more recently as extreme-thin or shape memory materials appear recently The phenomenon easily occurs, and after finishing sewing, there is a problem of sewing iron, that is, sewing wrinkles, and ironing must be done. But. In the sewing machine equipped with this apparatus, almost no wrinkles are generated in the finished product, so that the ironing process is unnecessary, so that the sewing process is shortened and the quality of the sewing product is further enhanced.

Claims (2)

A needle plate 5 having a needle hole 0 through which the needle 4 penetrates the sewing machine, and a to-be-sealed object in front or both sides of the needle hole 0 with respect to the advancing direction. A cloth pressing device which is formed so as to be disposed on the tip portion of the sending tooth 16 appearing on the needle plate 5 and the pressing tool 7 for pressing the object to be sewn when sewing is placed on the tip portion thereof. In the sewing anti-slip of the sewing material of the sewing machine provided with, the needle hole (0) is located in front of the rack (16b) of the sending hole 16 is located in front of the forward direction of the sending tooth (16). The corresponding sending hole 16 is set higher than the sending needle 16 corresponding to the other two racks 16a and 16c, and at the same time, the needle hole (1) 5 d of convex parts are provided in the part immediately after 0), and the sewing fineness of the to-be-sealed object of the sewing machine characterized by the above-mentioned. Anti Slip Device, 2. The pressing tool 7 of the cloth pressing device according to claim 1, which regulates the rotational position so that the lower surface thereof becomes a substantially horizontal position, and centers the horizontal axis perpendicular to the traveling direction. In this case, the front end with respect to the advancing direction is rotatably supported so as to be rotatable upwards, and is pushed by the first elastic member 9 so as to be in a substantially horizontal position as described above. 7 to the tip. A second elastic member 10, which is tensioned upward in response to the elastic force of the first elastic member 9, is installed to adjust the elastic force of the second elastic member 10. Sewing slip prevention device of the sewing material of the sewing machine characterized in that the installation.