JPH02206496A - Sewing machine - Google Patents

Abstract

PURPOSE:To enable a tape to be sewn on cloth in a cubic state so that the respective sections of the tape on the cloth may be embossed, by setting a nipping body for nipping the sewing tape fed along a nipple for holding the cloth, between the nipping body and a needle tip, at the intermediate point of the descending track of a needle. CONSTITUTION:A nipple 1 consists of a main body 3 and a nipping body 4, and by a nipple driving member set at the head of a sewing machine via a connector 2, the nipple 1 is vertically moved and is rotationally moved synchronized with a needle 43. In a process for sewing a tape 42 on cloth 41, the nipple and the needle 43 descend, and by the holding section 11 of the nipple, the cloth 41 and the tape 42 are held, and by the descending of the needle 43, the tape 42 on the nipping body 4 is nipped between a needle tip 43a and the nipping body 4, and the needle tip 43a is hooked to the tape 42. The needle 43 descends further and the nipping body 4 is pushed to be removed. After that, the tape 42 descends up to the cloth on a needle falling position, and is sewn on the cloth 41 in a state that slackness 42a is formed on the tape 42. As the result of continuous sewing, the tape 42 is sewn on the cloth 41 in a state that a frill is fitted on an edge section.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a sewing machine for sewing a narrow strip-like tape such as a cloth ribbon or a resin ribbon to cloth.

[Conventional technology]

The above-mentioned tape is attached to the fabric and then sewn.

[Problem to be solved by the invention]

In this sewn state, the tape becomes flat and has a problem of poor decorativeness.

The present invention has been made in view of the above points, and its purpose is to be able to sew tape to cloth in a three-dimensional state with raised parts, and also to be able to sew tape to cloth in a three-dimensional state with raised parts. To provide a sewing machine which can improve the appearance of finished products by making the sizes uniform.

[Means to solve problems]

In order to achieve the above object, the present invention takes the measures as described in the claims above, and its effects are as follows.

[Effect]

In the process of the needle descending, the tape whose tip is sewn onto the fabric and whose supply side is above the fabric is caught between the clip and the needle tip at a position where the intermediate position is floating above the fabric. The needle tip gets caught on the tape. When the needle descends further, the portion of the tape caught by the needle tip is lowered to the fabric, where it is sewn. Therefore, slack is created between the part of the tape already sewn to the cloth and the part sewn to the cloth as described above, and the slack part stands out from the cloth.

〔Example〕 The drawings showing the embodiments of the present application will be described below.

In FIGS. 1 to 4, the symbol (■) indicates a nipple, which is attached via a connector 2 to a nipple drive member provided in the head of the sewing machine. As is well known, the nipple drive member is capable of vertical movement and rotation in synchronization with the needle of a sewing machine.

The nipple 1 will be explained in detail below. The nipple 1 consists of a body 3 and a clamp 4 attached to the body. First, the main body 3 will be explained below. 5 indicates the main part of the main body, and on the upper side there is a top piece 6 for the connector 2.
is integrally formed, the lower surface is a diagonal guide surface 7 for guiding the tape, and the center part is provided with a needle passage hole 8 that also passes through the top piece 6. .

The upper mounting piece 6 is inserted into the upper mounting hole 2a of the connector 2 and fixed with a set screw 2b. Reference numeral 10 denotes a hanging piece integrally formed with the lower end of the main body portion 5. Its lower surface serves as a presser portion 11 for pressing cloth or tape, and its side surface serves as an inversion wall 12. The left and right lower edges of this hanging piece 10 are cut out as shown in the figure, and these become the tape relief parts 13. Reference numerals 14 and 14 indicate a pair of left and right guide bodies, and the above-mentioned Guide walls 14a, 14 formed integrally with the main body 5 on both left and right sides of the main body 5
a and a groove width adjustment piece 17 that is attached to the guide wall 14a if necessary, and the inner wall surface of the guide walls 14a, 14a or the inner surface of the groove width adjustment piece 17 guides the tape. It functions as a guide section.

Reference numeral 15 indicates a guide groove of the tape constituted by the lower surface 7 and side surface 5a of the main body portion 5 and the guide portion.The groove width adjustment piece 17 is attached to the inside of the guide wall 14a by an upper threaded rod 18. There is. A plurality of thin plate-like adjustment pieces 17 are prepared, and by changing the number of adjustment pieces 17 attached, the width of the guide groove 15 can be variously changed, and one guide wall 14a and the other guide wall The position of the guide groove 15 in the width direction can be changed by varying the number of guide grooves 14a. Reference numeral 19 denotes a rod for positioning the groove width adjustment pieces 17 relative to each other, and has both edges 19a.

19a is inserted into a through hole provided in the groove width adjustment piece 17. Further, the intermediate portion 19b is adapted to function as a guide piece for a second tape as described later. Adjustment pieces as shown in the above description may have different thicknesses as shown by 20 and 21. Reference numeral 23 is a threaded rod screwed into a threaded hole provided in the guide wall 14a. This is illustrated as a means for adjusting the slack dimension of the tape, and its tip 24 functions as an adjustment piece. Note that 25 is a spring for loosening the threaded rod 23.

Next, the sandwich body 4 is formed by press-molding a metal plate, and its base portion 4a is connected to a threaded rod 27 for top mounting and a pressing spring 28.
It is attached to the guide wall 14a of the main body 3 by. The mounting state is as shown in FIG. 5(D), for example, from a state in which the base portion 4a is elastically pressed by the pressing spring 28 and the tip portion 4b of the clip faces the guide surface 7 of the main body 3. It is designed so that it can be separated elastically. Nao 29
is an abutment piece formed integrally with the sandwich body 4, and is opposed to the tip portion 24 of the adjustment tool 23. The above-mentioned sandwich body has a code 30 depending on the width of the guide groove 15 and its position in the left and right direction.
Various forms as shown in ~33 are prepared.

Next, the operation of sewing a tape onto cloth using a sewing machine equipped with a nipple configured as described above will be explained.

First, by turning the adjustment tool 23 to adjust the in/out dimension of the adjustment piece 24, the tape can freely pass between the tip 4b of the sandwich body 4 and the guide surface 7, as shown in FIG. 5(A). A case will be explained in which a gap is created. In FIG. 5, 40 is the throat plate of the sewing machine, 41 is a cloth that is moved along the upper surface of the throat plate 40, and 42 is a tape to be sewn onto the cloth 41, which is attached to the upper left of the figure by a supply device not shown. It is now supplied from 43 is the throat plate 40
The well-known needle is provided in the upper position of the needle hole 4 of the needle plate 40.
It can freely descend and ascend toward 0a. 44
．． 45 indicates an upper thread and a lower thread for sewing, respectively.

First, from the state shown in FIG. 5(A), the nipple 1 and needle 43 are (
The needle 43 descends as shown in B), and the presser part 11 in the nipple 1 presses down the cloth 41 and the tape 42. Next, the needle 43 continues to descend, and as shown in FIG. and the pincer 4, and as a result, the needle tip 43a
is caught on the tape 42. The needle 43 continues to descend D
) As shown in (E), the pincer 4 is pushed away, and the needle 43 continues to descend toward the cloth 41 with the tape 42 hooked thereon, as shown in (E) (the tape 42 is lowered to the cloth 41 Then, the needle 43 pierces the cloth 41. In this state, the upper thread 44 and the lower thread 45 are untangled by the well-known action of a hook in a sewing machine.
3 rises, the clamp body returns to its original position by the biasing force of the spring 28, and then the two-socket 1 rises again to the position shown in FIG. 5(A). In this way, the tape 42 is sewn onto the cloth 41 using the upper thread 44 and the lower thread 45.

In the above process, the needle 43 is placed at the needle drop position, that is, at the needle hole 40.
At the midpoint of the descending trajectory descending to position a (C
), the needle tip 43a gets caught on the tape 42, and then (
Since the tape 42 is lowered to the fabric above the needle drop position as shown in D), the tape 42 is sewn onto the fabric 41 with a slack 42a created as shown in the figure. As a result of such sewing being performed continuously, the tape 42 is sewn to the cloth 41 with a ruffled edge as shown in FIG. 6, for example.

Next, FIGS. 7 to 10 show the state in which the pincer 4 is moved away from the guide surface 7 by a large amount by operating the adjusting tool 23. In this case, the needle 43 is lowered from the state shown in FIG. 7 (state B corresponding to FIG. 5(B)) to the state shown in FIG. 8 (state corresponding to FIG. 5(C)). Therefore, the tape 4 is formed between the needle tip 43a and the sandwich body 4.
2 is pinched, and the needle tip 43a is caught on the tape 42. Then, the needle tip 43a carries the hooked part of the tape 42 toward the cloth 41 directly below it, as shown in FIG.
In this case, as is clear from the figure, the needle tip 43a is attached to the tape 42.
Because it gets caught at a relatively low position, tape 4 on that part
2 is sewn onto the cloth 41, the slack 42a of the tape 42 is relatively small as shown in FIG. By continuing sewing in this condition, the tape 4
2, the fabric 41 is sewn in a slightly wavy state as shown in FIG.

In the case of sewing as described above, if the tape is sewn in a loop shape as shown by the reference numeral 46, the edge of the tape 42 will be in a suspended state at the outer peripheral side of the loop. However, even in such a state, the relief part 13 is formed in the main body 3 of the nipple, so the edge 42b of the tape that is in the suspended state will not enter the relief part 13 as shown in FIG. Therefore, sewing at the loop 46 as described above can be performed without any problem.

Next, FIGS. 12 to 17 show a case where the adjustment piece 24 is moved backward by operating the adjustment tool 23 so that the tip 4b of the clamp 4 is in a state where the tape 42 is clamped between it and the guide surface 7. It is shown. When sewing tape in this state,
Shape Li shown in FIG. 12 (shape M corresponding to FIG. 5(A))
When the nipple 1 descends, the clamped portion continues to descend. Then, the tape 42 between the sandwiched part and the part already sewn onto the cloth 41
cannot move to the right in the drawing due to the existence of the reversing wall 12, so when the nipple 1 further descends to the shape U shown in FIG. 13 (the shape M corresponding to FIG. 5(B)), the It is bent in the shape of a Japanese character. When the needle 43 descends in this state, its needle tip 43a hooks the tape 42 on the pincer 4 as shown in FIGS. 14 and 15.

When the needle 43 continues to descend from this state, it pushes away the pincer 4 and moves toward the cloth 41 along with the tape 42 bent in the dogleg shape, as shown in FIG. The tape 42 is sewn onto the cloth 41 in a triple folded state. By continuing sewing in this state, the tape 42 is sewn onto the cloth 41 with the tank removed, as shown in FIG.

Next, FIGS. 18 and 19 show a situation in which a second tape 47 is also sewn onto the cloth 41 in addition to the above tape. As shown in FIG. 18, the second tape 47 is attached to the tape guide 19b at a position between the left and right guide bodies and away from between the sandwich body 4 and the total 43, that is, on the underside of the sandwich body 4. It is inserted into the insertion passage formed on the upper side. In this state, the tape 42 and the second tape 4
7 is polymerized.

Then, by performing the same sewing operation as in the above case, the tape 47 is kept flat along the cloth 41.
Further, the tape 42 is sewn on the upper side of the tape 47 with slack of various dimensions removed, as in the case described above.

Next, FIG. 20 shows a state in which a wide tape 50 is sewn, in which the adjustment piece 17 is not used, and a sandwich body designated by the reference numeral 32 is used.

Next, in FIG.
The drawing shows a case in which the stitches are sewn biased toward the left (in the figure), and different numbers of adjustment pieces 17 are attached to the left and right guide walls 14a, 14a, respectively.

Next, FIG. 22 shows a state in which sewing is performed with the tape 42 being more biased than in the case of FIG. 21, and the sandwich body shown by reference numeral 33 is used.

Next, FIGS. 23 to 28 show a state in which a coarsely textured tape 53 is sewn onto the cloth 41 using the sewing machine equipped with the nipple described above.

First, FIG. 23 shows a state in which the intermediate portion of the tape 53 is sewn with a medium amount of slack (same state as shown in FIG. 5).

Moreover, FIG. 24 shows a state in which the stitches are sewn in a state similar to that shown in FIG. 23, but in a state where they are unevenly distributed in the - direction.

In this case, the relationship between the cloth and the tape is such that the edge 53a of the tape 53 is largely raised from the cloth 41, as shown in FIG.

Next, FIG. 26 shows a state in which the tape as described above is sewn with a reduced amount of slack and is unevenly distributed. In this case, the relationship between the cloth and the tape 53 is as follows.
The situation is as shown in the figure.

Next, FIG. 28 shows a state similar to that shown in FIG. 26, but with the edge of the tape sewn onto the cloth 41.

〔Effect of the invention〕

As described above, in the present invention, when the tape 42 is sewn to the cloth 41, slack is created in the tape 42 and the steps 6.10.
As shown in FIG. 17, each part can be sewn in a three-dimensionally raised state from the cloth 41, which has the effect of exhibiting three-dimensional decorative properties.

Furthermore, when creating slack in the tape 42, the point where the tape 42 is already sewn onto the fabric (see symbol A in Figure 5(C)) and the point on the supply side of the tape 42 (see Figure 5(C)) Even if the needle tip 43a is engaged with the tape 42 at an intermediate position (see symbol B), that is, at a point where the tape 42 is suspended from the cloth 41, the above-mentioned Since the needle tip 43a is hooked onto the tape 42 with the tape 42 at the point in between, even if the tape 42 is oblique to the downward direction of the needle 43 at the above point, or the surface of the tape 42 is smooth and slips easily. Even if it is a type of material, it has the advantage of being able to reliably perform the above-mentioned hooking and creating slack at an accurate pitch. This is useful in that when the tape 42 is sewn onto the cloth 41 one after another, the size of the raised tape 42 due to the above-mentioned slack is uniform, and the appearance of the finished product can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a perspective view, FIG. 2 is a view seen from the direction of arrow P, FIG. , Fig. 5 is a vertical cross-sectional view to explain how the tape is sewn to the fabric, Fig. 6 is a perspective view of the tape sewn to the fabric, and Figs. 7 to 9 show how the tape is sewn to different amounts of slack. FIG. 10 is a perspective view showing the state when the tape is sewn as shown in FIGS. 7 to 9;
Fig. 11 is a partially cutaway view to explain the function of the relief part, Figs. FIGS. 18 and 19 are perspective views showing the state when the tapes are sewn as shown in FIGS. 16 to 16. FIGS. The figure is a rear view (view from the same direction as Figure 2) showing the relationship between the wide tape and the nipple, and Figures 21 and 22 are the rear view showing the relationship between the tape and the nipple when the tape is unevenly distributed. 23 to 28 show the state in which coarsely textured tapes are sewn, and these inner cylinders 23, 24.
26.28 is a perspective view, FIG. 25 is a cross-sectional view taken along the line XXV-XXV, and FIG. 27 is a cross-sectional view taken along the line XX■-XXVI. l... Nipple, 4... Pincer, 41... Cloth, 42
...Tape, 43... Needle, 43a... Needle tip. Figure 44L Figure 8 Figure 6 Figure 11 Figure 16 Figure 19 Figure 20 Figure 21 Figure q Figure 2z

Claims (1)

[Claims] 1. At a position above the throat plate, a needle for sewing tape onto the cloth placed on the throat plate and a nipple for pressing the cloth are arranged vertically in synchronization with each other. The nipple is configured to move the sewing tape supplied along the main body of the nipple between the needle tip and the sewing tape at an intermediate point of the downward trajectory of the needle to the needle drop position. A sewing machine equipped with a pinching body. 2. The nipple is equipped with a pair of left and right guide bodies that regulate the widthwise position of the tape that is supplied along the main body of the nipple, and each guide body has a guide that faces the edge of the tape. 2. The sewing machine according to claim 1, wherein the section is movable in the width direction of the tape. 3. The sewing machine according to claim 1, wherein the nipple is provided with an adjusting means for changing the position of the nip so that the position where the tape is sandwiched between the nip and the needle tip can be changed up or down. 4. The nipple is provided with an insertion path for inserting the second tape so as to overlap the tape sandwiched between the pincher and the needle tip at a position avoiding the gap between the pincher and the needle. The sewing machine according to claim 1.