JPH0596075A - Hem winding binder device for long-sized sewing object - Google Patents

Abstract

PURPOSE:To realize the hem winding binder device which executes sewing automatically and with high accuracy by saving a manual work for winding a hem to two or three and guiding it to a sewing machine, at the time of winding the hem of a long-sized object such as a curtain, etc., and executing its sewing, and can manufacture a product of a low cost and of a good quality. CONSTITUTION:By a winding-in board 24 being a guide board 22 curved like an arch, long-sized cloth is guided to a sewing machine 1. The side end 27b of the winding-in board 24 is formed like a curve, depressed to the inside, and by these shapes, the end part of the cloth is inserted smoothly into each binder 40, 50 and 60, therefore, the wound-in cloth of the end part is guided automatically to the sewing machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing device for automatically winding a hem (end portion) of a long cloth such as a curtain, and more particularly, to a sewing machine in which the hem of the cloth is wound around a sewing machine. It relates to the structure of a guiding binder device.

[0002]

2. Description of the Related Art In a long fabric such as a curtain, the hem, that is, the end of the fabric is wound into two or three wraps and sewn such as sewn. Conventionally, such hem processing is performed by attaching a trumpet 3 to the foot portion 2 of the sewing machine 1 as shown in FIGS. 10 and 11, and fitting the hem 11 of the cloth 10 to the shape of the trumpet 3. invite. Then, the wrapping is performed by sewing a predetermined position of the hem in a state in which the wrapping member 3 is wound in a certain winding size by various methods. At this time, in order to guide the hem of the cloth to the trumpet 3, on the flat guide board 5 set at the same height as the cloth guide portion 4 of the sewing machine 1, the hem 11 is preliminarily adjusted according to the shape of the trumpet 3. It is necessary to be wound up on the fabric, and this work is generally performed manually by the sewing person along the longitudinal direction of the fabric.

[0003]

The work of winding and sewing the hem is still accompanied by the complementary manual work of the sewn person. Therefore, in order to continuously sew a long fabric, it is necessary to repeat the operation of carefully winding the fabric into a certain shape in the longitudinal direction. Also, in order to prevent misalignment and loosening of the sewing part, it is necessary to wind the hem shape uniformly and guide it to the sewing machine at a constant speed. Yes, the quality of the product depends on the skill of the sewer. Therefore, in order to produce a high quality product, it is necessary to secure an experienced sewing person. A wide hem width, especially a width of 6 cm or more, is difficult for even an experienced sewing person, and such wide hem sewing is impossible.

Therefore, various attempts have been made to automate this work and to sew a wide hem. However, in order to prevent misalignment and slack in the sewn area and to perform high-quality sewing, it is necessary to guide the hem of the cloth evenly to the trumpet and keep the winding shape constant. Is difficult to handle to guide the machine to the sewing machine. Therefore, it is difficult to realize a sewing device that produces a high quality product without requiring the assistance of the sewing person.

In view of the above problems, therefore, in the present invention, the sewing machine is configured to generate a force at the end of the cloth by the shape of the guide board so as to suppress the occurrence of displacement, looseness, etc. in the sewing operation of the hem winding. The purpose of the present invention is to realize a binder device capable of guiding the dough to the fabric.

[0006]

In order to solve the above-mentioned problems, in the present invention, the dough is supplied through an arch-shaped guide board to prevent the occurrence of misalignment and slack during winding. ing. That is, in the hem winding binder device for a long sewn product that winds the end portion of the long cloth according to the present invention and guides it to the sewing machine, a plate-shaped guide board for guiding the cloth to the sewing machine and an end in the center direction of the cloth. At least one side end of the guide board has a curved shape that gradually narrows the width of the guide board. It is characterized in that it is provided with a recessed winding area.

The binder means used in such an apparatus, which is a three-winding binder means for winding the end portion of the cloth into three turns, includes a front binder portion located at the introduction portion from the winding region to the sewing machine and a winding device. It can be constituted by a guide vane located in the middle of the region and below the curved portion, and an auxiliary binder part located in the middle of the guide vane for feeding the dough to the guide vane. As the front binder portion, it is desirable to use a plate-shaped member having a U-shaped cross section that sandwiches the guide board vertically from its side end. Further, as the guide vane portion, it is preferable to use a bending member that has an end portion having a shape along a curve in which a second fold that forms three turns is formed and that is curved along the curved portion of the guide board. It is valid. Further, it is desirable that the auxiliary binder portion is composed of a flat plate member extending from above the side end of the winding region to below the guide blade portion.

Further, it is effective that the front binder portion is provided with a sliding means which can be moved so as to be orthogonal to the guide board, and the curvature adjusting means is provided with which the curvature of the guide board can be adjusted.

[0009]

By supporting the cloth on the arched curved portion of the guide board, the cloth is handled in a state in which wrinkles are less likely to occur. In the winding area, the side edges of the bending portion are formed so as to gradually narrow the width of the bending portion.
It hangs downward from the side edge of the curved part. And because the entangled region is curved, the hanging end,
Upwards to be a curve along that curve, that is,
A force is generated to direct the edge of the fabric to the back surface side of the winding area. Therefore, in this winding area, the edges of the fabric are naturally folded back.

Further, since this side edge is recessed in a curved shape that gradually narrows the width of the guide board, the force that the end of the folded back material follows the recessed curve, that is, the cloth A force is generated that advances the end of the machine toward the sewing machine along the side edge that is recessed. Therefore, in this entrainment area,
The edges of the dough are folded in and the edges are comfortably inserted into the binder means attached to the guide board. These operations are smoothly performed by the force of the material edge generated along the curve of the side edge of the curved portion in the state where the wrinkles are stretched on the curved portion. In addition, a constant force is always applied to the edge of the cloth and the cloth is inserted into the binder means, so that the occurrence of misalignment, wrinkles, slack and the like that occur during winding can be suppressed. Therefore, high-quality sewing is performed without human intervention.

As the binder means, one having a shape suitable for two turns, three turns, etc. is adopted. As the binder means for three-winding, one composed of a front binder part, a guide blade part, and an auxiliary binder part can be adopted. In the binder part having such a configuration,
First, by the above-described operation, the end portion of the cloth folded back in the winding area of the guide board is guided to the gap between the guide blade section and the back surface of the guide board in the guide blade section. Therefore, the end portion of the cloth is folded again to have a three-fold shape. The auxiliary binder part is set so as to guide the folded back fabric at an appropriate angle from the side edge of the curved part to the lower part of the guide vane part. It is continuously and comfortably inserted in the gap between the back of the board. Then, the end portion of the cloth wound in three turns is guided to the U-shaped front binder portion and becomes parallel to the cloth body in the gap between the guide board formed by the U-shaped binder portion. So finally folded. Then, the end portion of the cloth folded in three windings so as to be in close contact with the cloth body is guided from the front binder portion to the sewing machine, and sewing is performed at a predetermined position.

Thus, by using the binder device of the present invention, three windings are automatically performed. And
The front binder part, the guide vane part, and the auxiliary binder part utilize the force in the proper traveling direction, which is generated at the end part of the cloth to be wound in itself due to the curved part of the guide board and the side edge curve of the winding area. Is inserted. Therefore, since there is no delay in the end of the material to be folded and the folding position is constant, the occurrence of misalignment, slack, etc. in the binder means is suppressed. Even with a long cloth material, accurate three-winding sewing is automatically performed.

Further, the front binder portion can be moved so as to be orthogonal to the guide board so that the initial setting of the dough is easy, and the curvature of the guide board is adjusted by the curvature adjusting means for adjusting the curvature of the guide board. By adjusting, it is possible to adjust the folding force generated by bending for each type of fabric, and three-fold hem sewing of high quality can be obtained.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire sewing device including the hem-wrapping binder device according to this embodiment, and FIGS. 2 to 4 show the hem-wrapping binder device 20 according to this embodiment set on the sewing machine 1. The situation is shown. Hem winding binder device 20
Is a flat plate introduction board 21 connected to a long fabric storage section.
And an arch-shaped guide board 22 passed between the introduction board 21 and the cloth guide portion 4 of the sewing machine 1. The introduction board 21 is a flat plate that is wider than the width of the cloth, and the cloth is guided to the sewing machine 1 from above the introduction board 21 via the guide board 22. The guide board 22 is the introduction board 21.
And a substantially rectangular main guide board 23 which is curved above the cloth guide portion 4 in an arch shape, and a winding board 24 which is curved in the same manner as the main guide board 23. 23 and reel 24 are mounted adjacent to each other to form one surface.

Further, an auxiliary guide board 5 is set around the cloth guide portion 4 of the sewing machine 1, and a roller 6 is installed above the auxiliary guide board 5. Then, the cloth is fed by the roller 6, and the cloth is guided to the sewing machine 1 through the hem winding binder device 20.

The take-up board 24 is a substantially trapezoidal plate material in which the downstream part 26 connected to the sewing machine 1 is narrower than the upstream part 25 connected to the introduction plate 21, and is made of stainless steel in order to reduce the frictional force with the cloth. A material with a low coefficient of friction such as is used. The side end 27a of the winding board 24 connected to the main guide board 23 is a straight line, and the other side end 27b extends from the upstream portion 25 slightly upward in an arch shape to the curved downstream portion 26. Is becoming narrower. The side edge 27b is formed to have a constant radius R,
The center of the radius R is set on the side opposite to the main guide board 23 with respect to the winding board 24. That is, the side end 27b is formed by a curve that is recessed toward the main guide board 23.

The main guide board 23 and the winding board 24
Are supported by the fixed arm 30 from below. The fixed arm 30 is a beam member, one end of which protrudes downward from the downstream portion 26 of the main guide board 23 and the winding board 24, and the other end of which protrudes from the upstream portion 25. Connected to 32. The length of the fixed arm 30 is set shorter than the distance between the protrusions 31 and 32 on the main guide board 23 and the winding board 24. Therefore, by fixing the main guide board 23 and the winding board 24 on the fixed arm 30 as described above, the curvature of the main guide board 23 and the winding board 24 is maintained. In addition, the fixed arm 30 and the protrusion 3
The connection point 33 with 2 is composed of an oval mounting hole 34 and a bolt 35, and the curvature of the main guide board 23 and the winding board 24 can be adjusted by changing the position of the bolt 35. ..

On the winding board 24, a front binder 40 for winding the hem of the fabric three times, guide blades 50, and
The auxiliary binder 60 is attached. The front binder 40 is installed in the downstream portion 26 of the winding board 24, that is, at a position where the winding board 24 is connected to the cloth guide portion 4 of the sewing machine 1. This front binder 4
Reference numeral 0 denotes a plate member having a U-shaped cross section as shown in FIG. 5, which is attached to the U-shaped interior 41 so that the narrowed downstream portion 26 of the winding board 24 is sandwiched. Therefore, the upper side 47 and the lower side 46 of the winding board 24 are
U-shaped gaps 72 and 73 are formed in the space, and the hem of the cloth folded in three is guided into the gap. Then, with the hem set to be parallel to the cloth, the sewing machine 1 is guided and sewing is performed. The upstream portion 42 of the front binder 40 is slightly bent toward the outside so that the resistance can be reduced when introducing the cloth. Further, also in the U-shaped tip 43, the tip of the plate material is bent outward so that the resistance to the cloth is reduced and the cloth is protected. Further, since the front binder 40 is supported by the connecting rail 45a from the slide rail 45, the front binder 40 can move in the vertical direction with respect to the winding board 24. Therefore, in the apparatus of this example, it is easy to initialize the dough into a three-wrap state.

As shown in FIG. 6, the guide blade 50 installed upstream of the front binder 40 is a plate material having a curve substantially the same as the curve of the winding board 24, and has a side end 27.
supported by b. The support portion 51 of the guide blade 50
On the other hand, on the opposite side, the fabric is wound along the side edge 27b 2
A guide end 52 is formed to guide the folded-back portion when folded again because it is folded under 4 and is further wound into three turns. The guide end 52 is a curve along the locus of the turning point, that is, the upstream part 53 of the guide end 52 is near the side end 27b of the winding board 24, and the downstream part 54 is a U-shaped part of the front binder 40. Is formed in a curved shape near the tip of the. And, its cross-section has been chamfered to reduce friction with the fabric and to avoid damage to the fabric.

As shown in FIG. 7, an auxiliary binder 60 is installed so as to be located approximately in the middle of the guide end 52. The auxiliary binder 60 is supported by the fixed arm 30 and is composed of a flat plate portion 61 which is set substantially linearly from below the guide blade 50 toward the side end 27b of the winding board 24. And this flat plate portion 6
The upper end 62 of No. 1 is bent on the upper surface of the winding board 24, and the hem of the cloth hanging from the side end 27b is smoothly guided below the guide blade 50 along the auxiliary binder 60. Further, the upstream portion 63 of the upper end 62 has its tip bent outward similarly to the upstream portion 42 of the front binder 40 to prevent friction with the cloth.

Further, in this apparatus, the winding board 2
An auxiliary guide 28 for guiding the hem of the cloth is attached to the side end of the upstream portion 25 of No. 4 so that the hem of the cloth is easily guided to the side end 27b. This auxiliary guide 28 is provided in the upstream part 2
It is composed of a substantially rectangular plate material that protrudes upward from the side end of 5.

FIGS. 8 and 9 show how the end portion 11 of the cloth 10 is guided to the sewing machine 1 in a three-fold state by the hem-wrapping binder device of this embodiment. First, dough 1
0 is an arc-shaped guide board 22 on a flat introduction board 21.
Will be guided to. And the winding board 24 of the guide board 22
Is narrowed along the side end 27b, the end portion 11 protruding from the side end 27b hangs downward. However, since the winding board 24 is curved in an arch shape,
The end portion 11 also exerts a force so as to be curved along the winding board 24. That is, as shown in FIG. 9A, the end portion 11 is folded back toward the lower surface 24 a of the winding board 24.

In the vicinity of the guide blade 50, the amount of folding back of the material end portion 11 becomes large, and as shown in FIG. 9 (b), it is bent again along the guide end 52 of the guide blade 50. Therefore, the fabric end portion 11 is folded back into three windings by the first fold line 12 formed by the side end 27b of the winding board 24 and the second fold line 13 formed by the guide end 52.
Then, the process of folding into this three-fold winding is shown in FIG.
As shown in (c), it is smoothly performed by the auxiliary binder 60. That is, the dough 10 hung from the side edge 27b by the auxiliary binder 60 is reasonably guided to the lower part of the guide blade 50, and therefore the force for bending the dough end 11 due to the curving of the winding board upward is transmitted to the end 11. The end portion 11 is attached to the lower surface 24a of the winding board and the guide board 5.
It is inserted into the gap 71 formed by 0 and.

In such a state, due to the frictional force acting between the end 11 and the guide plate 50 or the lower surface 24a,
The fabric is likely to be wrinkled, and due to this wrinkling, the problem that the positions of the folds 12 and 13 are displaced and the three windings are not formed as planned tends to occur, but in this example, as described above, The side end 27b of the winding board 24 is formed by a curved line having a concave R. Therefore, a force acts on the material end portion 11 so as to have a shape along this R.
The direction of this force is the downstream direction, that is, the direction in which the dough is inserted into each binder.
The frictional force with 4a is offset. Therefore, in the apparatus of this example, the fabric end portion 11 does not have wrinkles, and the three-winding shape as planned can be obtained.

Further, as shown in FIG. 9D, the cloth material end 11 is wound along the guide blade 50 so as to have a predetermined size. Fabric edge 1 wrapped to a specified size
1 is a front binder 4 as shown in FIG.
Inserted at 0. The front binder 40 is a plate member having a U-shaped cross section.
The ends 11a and 11b folded by the second fold line 13 are inserted into a gap 72 formed by the lower side 46 and the lower surface 24a of the winding board. Then, the fabric body is inserted into the gap 73 formed by the upper side 47 of the front binder 40 and the upper surface 24b of the winding board, and the first fold line 12 is formed along the U-shape 48 of the front binder 40.
Is formed. Therefore, in the front binder 40, three windings are formed in which the end portions 11a and 11b are in close contact with each other so as to be parallel to the fabric body 10, and are guided in the direction of the sewing machine 1.

As described above, by using the hem-wrapping binder device of the present embodiment, it is possible to continuously sew the hem of a long object such as a curtain, without involving manpower.

Further, in the present apparatus, the curved guide plate and the winding plate having the curved side end which is recessed inward are combined to smoothly insert the end of the cloth to be wound into each binder. Therefore, it is possible to supply the sewing machine to the sewing machine in a state in which wrinkles do not occur and positional deviation, distortion, and slack of the folds at the ends wound three times are suppressed. Therefore, it is possible to automatically and accurately perform the sewing process of the hem such as three-winding, which has conventionally required the manual work of the experienced sewing person.
It is possible to produce inexpensive and beautifully finished products.

Further, in the present apparatus, it is possible to adjust the curving of the winding board according to the folding back amount and the type of cloth, and it is possible to set the insertion force and the like suitable for forming the fold line. Therefore, it is possible to automatically perform sewing with a wide width of 10 cm or more, and to automatically perform wide hem sewing required for curtains, etc., and easily manufacture a product with high commercial value. ..

In this example, the description is based on the apparatus equipped with the binder for three windings.
It is of course possible to use not only for three windings but also for two windings using only the front binder. Further, by installing the winding board at both ends of the main guide board, not only one hem of the long fabric but also the other hem can be processed at the same time. Furthermore, the curved guide board of this example prevents wrinkles from occurring when guiding the cloth, and it is also possible to generate an appropriate tension on the cloth, so it is not limited to the guide board for hem winding sewing, It can also be applied to a guide board for pin tuck sewing.

[0031]

As described above, in the hem-wound binder device according to the present invention, even if the fabric is long, it is possible to use the guide board having the curved side surface and the curved surface. , It is possible to automatically and continuously perform the work of winding the hem and sewing. Since the tension of the fabric is adjusted using the curved surface, the tension does not depend on the remaining amount of the fabric, and it is possible to perform sewing with a constant quality from the beginning to the end of the long fabric. ..
As described above, labor can be saved by automating the hem winding sewing work that has conventionally required manual labor at high speed. Furthermore, by using this device, it is possible to automatically and accurately perform wide-hem hem sewing, so that it is possible to manufacture high-quality products with high added value at low cost. Become.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire sewing device equipped with a hem-wrap binder device according to an embodiment.

FIG. 2 is a perspective view showing an outline of a skirt winding binder device according to an embodiment of the present invention.

FIG. 3 is a plan view of the skirt winding binder device shown in FIG. 2 as seen from above.

FIG. 4 is a side view showing a side surface of the skirt winding binder device shown in FIG. 2.

FIG. 5 is an explanatory diagram showing a configuration of a front binder of the skirt winding binder device shown in FIG.

FIG. 6 is an explanatory diagram showing a configuration of guide vanes of the skirt-wound binder device shown in FIG.

FIG. 7 is an explanatory diagram showing a configuration of an auxiliary binder of the skirt-wound binder device shown in FIG.

FIG. 8 is an explanatory diagram showing a state in which cloth is attached to the skirt-wrapping binder device shown in FIG.

FIG. 9 is a flow chart showing the manner in which the end portion of the cloth is rolled up by the cross-sections (a) to (e) of the skirt-wrapping device shown in FIG. 8 in which the cloth is attached.

FIG. 10 is an explanatory view showing a state of conventional hem winding sewing processing.

11 is a perspective view showing an example of a three-fold wrapper used in the processing shown in FIG.

[Explanation of symbols]

 1 ・ ・ ・ Sewing machine 2 ・ ・ ・ Feet part 3 ・ ・ ・ 3 winding wrapper 4 ・ ・ ・ Cloth guide part 5 ・ ・ ・ Auxiliary guide board 6 ・ ・ ・ Cloth feed roller 10 ・ ・ ・ Fabric 11 ・ ・ ・ Fabric End (hem) 12 ... First fold 13 ... Second fold 20 ... Hem winding binder device 21 ... Introduction board 22 ... Guide board 23 ... Main guide board 24・ ・ ・ Winding board 25 ・ ・ ・ Upstream part of winding board 26 ・ ・ ・ Downstream part of winding board 27a, b ・ ・ ・ Side end of winding board 28 ・ ・ ・ Auxiliary guide 30 ・ ・ ・ Fixed arm 31, 32 ・..Projection portion 34 ... Oval hole 35 ... Bolt 40 ... Front binder 41 ... U-shaped portion 42 ... Upstream portion of front binder 43 ... U-shaped tip 45. ..Slide rails 46 ... U Lower side of the portion 47 ... upper side of the U-shaped portion 50 ... guide blade 51 ... support portion 52 ... guide end 53 ... upstream portion of guide blade 54 ... downstream portion of guide blade 60. ..Auxiliary binder 61 ... Flat plate portion 62 ... Auxiliary binder upper end 63 ... Auxiliary binder upstream portion 71, 72, 73 ... Gap M ... Sewing machine direction (direction of fabric advancement)

Claims (4)

[Claims] 1. A hem-wound binder device for a long sewn product which winds an end portion of a long cloth and guides it to a sewing machine, wherein a plate-shaped guide board for guiding the cloth to the sewing machine and a center of the cloth. At least one side end of the guide board gradually narrows the width of the guide board. A hem-wound binder device for a long sewn product, which is provided with a curving region which is curved in a concave shape. 2. The front binder portion according to claim 1, wherein the binder means is a three-winding binder means that winds the end portion of the cloth into three turns, and is located at an introduction portion from the winding area to the sewing machine. And a guide vane located in the middle of the winding area and below the curved portion, and an auxiliary binder located in the middle of the guide vane for feeding the dough to the guide vane. The front binder portion is a plate-shaped member having a U-shaped cross section that vertically sandwiches the guide board from the side end, and the guide vane portion is a second fold line that forms the three windings. Is a curved member that is curved along the curved portion, and the auxiliary binder portion has a side edge of the winding area from above the guide blade. A hem winding binder device for a long sewn product, which is a flat plate member extending below a root portion. 3. The hem-wound binder device for a long sewn article according to claim 2, further comprising a slide means capable of moving the front binder portion so as to be orthogonal to the guide board. 4. The method according to any one of claims 1 to 3,
A hem winding binder device for a long sewn product, comprising a curvature adjusting means capable of adjusting the curvature of the guide board.