KR101777091B1 - Optional guide apparatus for sewing shirt and sewing machine having the same - Google Patents

Abstract

The present invention relates to a sewing machine comprising: a guide plate; a folding guide unit; a length variable fixed unit; a rotation combined fixing unit; and a compression guide. The guide plate is installed on a bed. The folding guide unit is formed by bending three steps in the same direction on a side unit of the guide plate. The length variable fixed unit adheres to a side unit of the folding guide unit. The rotation combined fixing unit is combined with an end part of the length variable fixed unit to be rotated. An upper tension bracket and a lower tension bracket in which each fold line from the folding guide unit and the guide plate is projected in a direction which is discharged for sewing each fold line include: restitution force for bending up and down directions. When an upper roller and a lower roller, which are combined with each roller combining unit which is positioned in the upper tension bracket and the lower tension bracket to be rotated, are arranged in parallel to each other, the compression guide compresses the fold line, which is discharged from the folding guide unit while passing the upper roller and the lower roller, by receiving tension of the upper tension bracket and the lower tension bracket. The present invention is provided to roll an end unit of a fabric material of a dress shirt in a sewing process for a bottom fold line when the dress shirt is manufactured, thereby minimizing influences depending on a skill level of a worker without a high degree of the skill level. The present invention reduces sewing defects and improves quality by sewing the fold line in a compression state.

Description

TECHNICAL FIELD [0001] The present invention relates to a sewing machine having an optional guide apparatus for sewing a shirt,

The present invention relates to a sewing machine having an optional guide device for sewing a shirt, and more particularly, to a sewing machine having an optional guide device for sewing a short shirt, To a sewing machine having a selective guide device for sewing a shirt, which improves the productivity of the dress shirt by contributing to the improvement of quality by reducing sewing defects.

Generally, a shirt is a top suit to wear in a suit, a collar and sleeves to tie the necktie, and a man's suits with a tie.

A "shirt" of Korean Registered Patent No. 10-0792477 has been disclosed as a technology related to a conventional shirt, which is a shirt composed of a front plate, a back plate, a sleeve and a collar, And an inner folding portion formed from the upper portion of the backboard to the lower end portion by the upper and lower corrugated ends and forming a lower corrugation end through a seam on both sides of the lower end of the backboard, And wrinkles are formed through the outer folds.

Such a shirt will use a sewing machine to sew the front and back plates, and sleeves and collar. A sewing machine is used to sew objects such as cloth or leather, and sewing objects arranged so that the lower thread and the upper thread are mutually intertwined.

However, in the conventional sewing process for manufacturing a shirt, the bottom line of the bottom of the shirt is folded in many folds. At this time, depending on the proficiency, it is highly dependent on the occurrence of defects and productivity, The sewing machine has a problem that productivity is improved.

In order to solve such a problem, Japanese Utility Model Application No. 1991-73522 and Chinese Utility Model Application No. 201020695639 have been proposed. Although these conventional techniques serve to guide the cloth to be folded, It is inconvenient for the sewing, and it is difficult to contribute to the improvement of the productivity and the sewing quality is greatly lowered.

In order to solve the problems of the prior art, the present invention minimizes the influence of the skill of a worker in the sewing process for the bottom line at the lower end in manufacturing a shirt, does not require a high degree of proficiency, To thereby improve the quality of the shirt, to improve the productivity of the shirt, and to easily switch between use and non-use so that various sewing operations can be performed.

According to an aspect of the present invention, there is provided a sewing machine comprising: a bed having a wide flat plate shape on which a fabric of a shirt is placed on an upper surface; An arm extending laterally from one side of the bed; A needle extending vertically downward from a distal end of the arm and lifted by a driving means to be lifted up on the bed; An upper thread supply means provided on the arm for supplying an upper thread to the needle; A drum provided to be embedded in a lower side of the bed and having a bobbin wound around the lower thread; And a selective guide device for sewing a shirt, which is provided on the bed and guides curling of the fabric of the shirt, wherein the selective guide device for sewing the shirt is provided on the bed, A guide plate which is mounted and slidably guided; And the end portion of the tailgate of the dress shirt is folded in two stages so as to form a tangent line while the end of the tailgate of the tailgate is inserted along the upper surface of the guide plate, A folding guide portion for guiding the needle to the needle side of the sewing machine; A length variable fixed unit attached to a side of the folding guide unit and positioned in a direction orthogonal to a sewing direction of the tangent line to adjust the length of the folding guide unit so as to position the folding guide unit along the orthogonal direction; The length of the variable-length fixing unit being rotatably coupled to the end of the length-variable fixing unit, so that the use of the folding-back guide unit can be selected by the rotation of the variable-length fixing unit, A rotation coupling and fixing unit for changing the position of the folding guide part along the sewing direction by being rotated; And an upper tension bracket and a lower tension bracket projecting from the folding guide portion and the guide plate in a direction in which the tangent line is drawn out for sewing, are provided to have a restoring force against vertical bending, The upper roller and the lower roller that are rotatably coupled to the roller engaging portions provided on the lower tension brackets are disposed in close contact with each other so that a tangent line drawn out from the folding guide portion passes between the upper roller and the lower roller, And a pressing guide which receives the tension of the upper tension bracket and the lower tension bracket and presses them together.

Wherein the folding guide portion is provided on the side of the guide plate facing the needle and the first to third bending portions are formed by bending from the end to the guide plate side in order and the inner side of the second and third bent portions May be formed to have a curvature.

The length variable fixed unit may include: a pivoting member having an end coupled to the rotationally coupled fixed unit by a coupling bolt so as to be rotatable; And a sliding groove in which the rotating member is slidably engaged is formed along the longitudinal direction and a locking hole extending along the sliding groove is formed to expose the sliding groove, And a slider for adjusting the length of the fastening bolt by changing the position of the fastening bolt in the fastening hole.

Wherein the rotary coupling and fixing unit includes a fixing hole formed to extend in a direction parallel to the sewing direction and a position of a fixing bolt threaded into the bed through the fixing hole is changed in the fixing hole, And the end of the variable length fixing unit may be rotatably coupled to the variable fixing unit by a coupling bolt.

The length variable fixed unit and the rotationally coupled fixed unit are formed such that an end portion of the length variable fixed unit and the rotationally coupled fixed unit is rotatably coupled to each other so that an end thereof is inclined with respect to the sewing direction, The degree of deviation from the position can be increased.

Wherein the upper and lower rollers are provided with receiving grooves for receiving the tangential lines between the upper roller and the lower roller, an upper curvature portion having a curvature to concave along the outer circumferential surface of the upper roller, The lower curvature portion having a curvature so as to be convex corresponding to the upper curvature portion is formed along the upper curvature portion, so that the tangent line can be pressed upward in a convex shape.

According to the sewing machine having the optional guiding device for sewing the shirt according to the present invention, in the sewing process for the bottom line at the lower end during manufacturing the shirt, by guiding the end of the tailoring portion of the tailoring shirt so as to form a tangent line, So that it is possible to reduce the influence of the skill of the sewing machine and to avoid the need for a high degree of proficiency and to sew the tangent line in a squeezed state so as to reduce the sewing defects and to contribute to quality improvement, The productivity of the shirt can be improved and the use and non-use can be easily switched between so that various sewing operations can be performed.

1 is a perspective view illustrating an optional guide device for sewing a shirt according to an embodiment of the present invention.
2 is a cross-sectional view showing a main part of a selective guide device for sewing a shirt according to an embodiment of the present invention.
3 is a perspective view for explaining the operation of the optional guide device for sewing a shirt according to an embodiment of the present invention.
FIG. 4 is a perspective view illustrating a use state of a selective guide device for sewing a pair of shirts according to an embodiment of the present invention.
5 is a front view showing a compression guide of a selective guide device for sewing a pair of shirts according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view illustrating a tangent line for explaining a pressing guide action of a selective guide device for sewing a pair of shirts according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It should be understood that the present invention is not limited to these specific embodiments but includes all changes, equivalents, and alternatives included in the technical idea of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or corresponding elements, and redundant description thereof will be omitted .

FIG. 1 is a perspective view showing an optional guide device for sewing a pair of shirts according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a main part of a selective guide device for sewing a pair of shirts according to an embodiment of the present invention.

1 and 2, a sewing machine having an optional guide device for sewing a shirt according to an embodiment of the present invention is a sewing machine having an optional guide device 100 for sewing a shirt according to an embodiment of the present invention An arm 220 extending in a lateral direction from one side of the bed 210 and a lower arm 210 extending from a front end of the arm 220 to a lower side (Not shown) provided on the arm 220 so as to extend upwardly and downwardly from the upper end of the needle 230. The upper arm (Not shown) provided to be embedded in the lower side of the bed 210 and provided with a bobbin around which a lower thread is wound, Optional for sewing tailored shirts that guide the curling of the fabric It is possible to include the guide device 100 and the configurations other than the optional guiding device 100 for sewing the shirt can be a well-known configuration, and it is needless to say that it is possible to additionally include known configurations for use as a sewing machine .

On the bed 210, an optional guide device 100 for sewing a shirt according to an embodiment of the present invention is installed. In addition, the upper thread supply means may include a thread hook provided on the arm 220, an upper thread tension adjusting device (not shown) positioned on the lower side of the thread hook, and a thread threader positioned on the upper side of the upper thread tension adjusting device, The upper thread released from the failure is sequentially passed through the needle thread tensioner, the upper thread tension adjusting device, and the thread threader, and is then inserted into the eye formed at the lower end of the needle 230.

Referring to FIGS. 1 and 2, an optional guide device 100 for sewing a pair of shirts according to an exemplary embodiment of the present invention includes a guide plate 110, a folding guide unit 120, a length variable fixing unit 130, An engaging and fixing unit 140, and a compression guide 150.

The guide plate 110 is installed on the bed 210 of the sewing machine and guides the user's tail 10 on the upper surface of the sewing machine so as to be slid and includes a folding guide unit 120, And the rotation coupling and fixing unit 140, it may be made of various materials including iron, stainless steel, etc., metal, metal alloy, synthetic resin, and the like.

The folding guide portion 120 is formed by folding the folding guide portion 120 in three directions in the same direction on the side of the guide plate 110 so as to cover the end portion of the tailoring fabric 10 inserted along the upper surface of the guide plate 110, Is folded in two stages so as to form a bottom line 11, and is guided to move toward the needle 230 side of the sewing machine. The folding guide portion 120 may be provided on the side of the guide plate 110 facing the needle 230 and is folded three times from the end to the guide plate 110 side by three folding, The inner sides of the second and third bent portions 122 and 123 may be formed to have a curvature so as to stably guide the folding of the fabric of the shirt.

The folding guide portion 120 is formed so that the third folded portion 123 forms the first folded portion 11a on the tailoring fabric 10 when the false tailored fabric 10 on the guide plate 110 is inserted inward Guiding the second folded portion 122 to form the second folded portion 11b and serving as a stopper so that the first bent portion 121 stops at the predetermined position, And the second folded portions 11a and 11b can be kept constant. Thus, the tailor 11 is formed by folding twice at the end portion of the tailor's tail 10. Here, the bottom line 11 is formed at the lower end of the shirt for the finish processing of the end portion of the tailoring of the tailored shirt, and any other portion that provides a similar folding structure may be included.

The length variable fixing unit 130 is attached to a side portion of the folding guide portion 120 and is positioned in a direction orthogonal to the sewing direction of the tangent line 11. The length of the variable fixed unit 130 is adjusted by controlling the length of the folding guide portion 120, In the direction of the arrow.

The length variable fixed unit 130 includes a tiltable member 131 whose end is rotatably coupled to the rotary coupling and fixing unit 140 by the coupling bolt 141 as in the present embodiment, A sliding groove 132a can be formed along the longitudinal direction and a locking hole 132b extending along the sliding groove 132a can be formed to expose the sliding groove 132a, And a slider 132 for adjusting the length of the fastening bolt 133 screwed to the pivoting member 131 through the fastening hole 132b by varying the position of the fastening bolt 133 in the fastening hole 132b. Here, the slider 132 may be connected or fixed to the folding guide part 120 by the connecting part 132c, and the folding guide part 120 may be fixed by welding, bolting, riveting, bonding or the like.

The rotation coupling fixed unit 140 is rotatably coupled to the end of the variable fixed unit 130 so that the use of the folded guide unit 120 can be selected by the rotation of the variable fixed unit 130 , And the folding guide unit 120 can be displaced along the sewing direction by being fixed to the bed 210 so as to be positionally variable along the sewing direction.

The rotary engaging and fixing unit 140 may have a fixing hole 142 formed to extend in the direction parallel to the sewing direction as in the present embodiment and may include a fixing bolt 142 screwed to the bed 210 through the fixing hole 142, The end portion of the fixing bracket 143 can be rotatably coupled to the variable fixing unit 130 by the coupling bolt 141. In addition,

The guide plate 110 and the folding guide unit 120 are made adjustable in the direction orthogonal to the sewing direction, that is, in the "A" direction (see FIG. 1) by adjusting the length of the variable fixed unit 130 , It is possible to change the position in the sewing direction, that is, the direction "B" (see FIG. 1) by adjusting the position of the rotationally coupled fixing unit 140. 4, the length variable fixing unit 130 can be rotated in the "C" direction (see Fig. 1) The tangent line 11 of the fabric 10 can be formed and sewed or the guide plate 110 and the folding guide 120 can be moved out of the sewing operation area on the bed 210 as shown in FIG. So that it is possible to perform a sewing operation other than the forming operation of the tangent line 11 without using them.

3, the variable length fixing unit 130 and the rotary coupling fixing unit 140 are formed with inclined portions 134 and 144 so that their ends, which are rotatably coupled to each other, are inclined with respect to the sewing direction, The degree of deviation of the folding guide portion 120 from the working area for sewing can be increased by the rotation of the tilting guide portion 130. This makes it possible to ensure the area of the sewing work other than the formation of the tangent line 11 It is easy to do.

Referring to FIGS. 1 and 4, the crimping guide 150 is formed in a direction in which the tangent line 11 is drawn out from the folding guide part 120 and the guide plate 110 for sewing, that is, in a direction toward the needle 230 The upper tension bracket 151 and the lower tension bracket 152 are provided so as to have a restoring force against vertical bending and are provided with a roller engagement portion The tangential line 11 drawn out from the folding guide portion 120 is disposed on the upper roller 153 and the lower roller 154 so that the upper roller 153 and the lower roller 154, The tension of the upper tension bracket 151 and the tension of the lower tension bracket 152 are received and compressed.

The upper tension bracket 151 and the lower tension bracket 152 are integrally formed from each of the folding guide part 120 and the guide plate 110. The upper tension bracket 151 and the lower tension bracket 152 are made of a metal material so that they have a tension Whereby the upper roller 153 and the lower roller 154 can be brought into close contact with each other by such tension.

4 to 6, the upper roller 153 and the lower roller 154 may be made of a metal material for pressing, and a receiving groove 155 for receiving the tangent line 11 is formed between the upper roller 153 and the lower roller 154 And an upper curvature portion 156 having a curvature to concave along the outer circumferential surface of the upper roller 153 can be formed and the upper curvature portion 156 corresponding to the upper curvature portion 156 along the outer circumferential surface of the lower roller 154 The lower curvature portion 157 having a convex curvature can be formed, so that the tangent line 11 can be pressed upward in a convex shape. 6, the tangent line 11 pressed by the upper roller 153 and the lower roller 154 has a convex shape upward as shown in FIG. 6, thereby minimizing the deformation when moving toward the needle 230, So that the portion of the tangent line 11 which is folded at the upper portion forms a larger arc than the portion of the tangent line 11 which is not folded at the lower portion, So that it is possible to maintain and improve the sewing quality.

When the sewing machine having the optional guiding device for sewing the shirt according to the present invention is operated, the needle 230 penetrates the tail yarn 10 in the up and down direction while the upper thread passes through the tail yarn 10, The upper and lower sleeves are mutually interlaced by the drum so that the fabric can be stitched together. At this time, as shown in FIG. 4, When the end portion, for example, a portion corresponding to the lower end of the shirt is slidably inserted on the guide plate 110 with the folding guide portion 120, the end portion of the tailoring fabric 10 is folded in two stages by the folding guide portion 120 The tangent line 11 is formed by folding and the tangent line 11 is guided by the folding guide portion 120 so that the tangent line 11 The upper roller 153 of the lower roll 150, 154 is pressed by passage between, which results in easy to occur by sewing both accurate for the tangent (11), can contribute to the improvement of the sewing quality and productivity.

The tangent line 11 thus pressed can enter the lower side of the presser foot 221 so that the tangent line 11 can be accurately sewn to a desired position. On the other hand, the length of the variable-length fixing unit 130 and the position of the rotary-coupling fixing unit 140 can be adjusted to change or align the sewing position of the tangent line 11.

3, the guide plate 110 and the folding guide unit 120 are separated from the work area for sewing on the bed 210 by rotating the variable length fixing unit 130 from the rotationally coupled fixing unit 140 The guide plate 110 and the folding guide unit 120 may be returned to the original position so that the work for forming the tangent line 11 may be made possible.

As described above, according to the present invention, by guiding the end portion of the tailoring portion of the tailoring shirt so as to form a tangent line during the sewing process for the bottom line at the lower end during the production of the tailored shirt, It is possible to reduce the sewing defects as well as to contribute to the improvement of the quality and to enable the quick production of the tangential line, so that the productivity of the shirt can be improved , It is possible to conveniently switch between use and non-use for various sewing operations.

Although the present invention has been described with reference to the accompanying drawings, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be determined by the claims and equivalents thereof.

10: Waist Shirt Fabric 11: Tangent
11a: first folded portion 11b: second folded portion
110: guide plate 120: folding guide part
121: first bent portion 122: second bent portion
123: third bent portion 130: variable length fixing unit
131: pivoting member 132: slider
132a: sliding groove 132b: fastening hole
132c: connecting portion 133: tightening bolt
134: inclined portion 140:
141: coupling bolt 142: fixing hole
143: fixing bolt 144: inclined portion
150: compression guide 151: upper tension bracket
151a: roller coupling portion 152: lower tension bracket
152a: roller coupling portion 153: upper roller
154: lower roller 155: receiving groove
156: upper curvature portion 157: lower curvature portion
210: bed 220: arm
221: presser foot 230: needle
A: Sewing position

Claims (6)

In the sewing machine,
The bed is made up of a wide flat plate and the fabric is put on the upper side;
An arm extending laterally from one side of the bed;
A needle extending vertically downward from a distal end of the arm and lifted by a driving means to be lifted up on the bed;
An upper thread supply means provided on the arm for supplying an upper thread to the needle;
A drum provided to be embedded in a lower side of the bed and having a bobbin wound around the lower thread; And
And a selective guide device for sewing a shirt, which is provided on the bed and guides the curl of the dress shirt,
In the optional guide device for sewing the shirt,
A guide plate installed on the bed, the guide plate being slidably mounted on an upper surface thereof;
And the end portion of the tailgate of the dress shirt is folded in two stages so as to form a tangent line while the end of the tailgate of the tailgate is inserted along the upper surface of the guide plate, A folding guide portion for guiding the needle to the needle side of the sewing machine;
A length variable fixed unit attached to a side of the folding guide unit and positioned in a direction orthogonal to a sewing direction of the tangent line to adjust the length of the folding guide unit so as to position the folding guide unit along the orthogonal direction;
The length of the variable-length fixing unit being rotatably coupled to the end of the length-variable fixing unit, so that the use of the folding-back guide unit can be selected by the rotation of the variable-length fixing unit, A rotation coupling and fixing unit for changing the position of the folding guide part along the sewing direction by being rotated; And
An upper tension bracket and a lower tension bracket projecting from the folding guide portion and the guide plate in a direction in which the tangent line is pulled out for sewing are provided so as to have a restoring force against vertical bending, And the upper roller and the lower roller that are rotatably coupled to the roller engaging portions provided on each of the tension brackets are disposed in close contact with each other so that a tangent line drawn out from the folding guide portion passes between the upper roller and the lower roller, A compression guide for receiving the tension of the upper tension bracket and the lower tension bracket and pressing them;
And an optional guide device for sewing a pair of shirts. The method according to claim 1,
The folding-
The first to third bending portions are formed by bending from the end to the side of the guide plate in order, and the inside of the second and third bent portions are formed so as to have a curvature Wherein the sewing machine has an optional guide device for sewing a shirt. The method according to claim 1,
The length variable fixed unit includes:
A rotatable member rotatably coupled to the rotationally coupled stationary unit by an engaging bolt; And
Wherein a sliding groove is formed along the longitudinal direction to which the tiltable member is slidably coupled and a locking hole is formed extending along the sliding groove to expose the sliding groove, A slider for adjusting the length of the fastening bolt by varying the position of the fastening bolt in the fastening hole;
And an optional guide device for sewing a pair of shirts. The method according to claim 1,
The rotary coupling and fixing unit includes:
Wherein a fixing hole is formed so as to extend in a direction parallel to the sewing direction and the position of the fixing bolt threaded into the bed through the fixing hole is varied in the fixing hole to change the position along the sewing direction, A sewing machine having an optional guide device for sewing a shirt, the end of which is rotatably engaged with a fixing bolt by a fixing bolt. The method of claim 4,
Wherein the length variable fixed unit and the rotationally coupled fixed unit comprise:
And a tilting portion is formed such that an end portion thereof rotatably coupled to the tilting portion is inclined with respect to the sewing direction so that the degree of deviation of the folding guide portion from the working position for sewing is increased by rotation of the variable- A sewing machine having an optional guide device for a sewing machine. The method according to any one of claims 1 to 5,
The press-
Wherein an upper curvature portion having a curvature to concave along the outer circumferential surface of the upper roller is formed and an upper curvature portion having a curvature along the outer circumferential surface of the upper roller is formed between the upper roller and the lower roller, And a lower curvature portion having a curvature so as to be convex corresponding to a portion of the tangent line is formed so that the tangent line is pressed upward in a convex shape.

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