JP4871847B2 - How to sew flat tape with petal-shaped overhangs on both sides - Google Patents

Description

  The present invention relates to a method for sewing a flat tape to the surface of a cloth, and more particularly to a method for sewing a tape capable of three-dimensionally sewing a flat tape to the surface of a cloth.

Conventionally, a tape sewing method capable of three-dimensionally sewing a flat tape with respect to the surface of a cloth has been widely known including, for example, a tape sewing method disclosed in Patent Document 1.
For example, the tape sewing method disclosed in Patent Document 1 is as follows.
As the embroidery sewing machine, a bed having a needle drop hole, an embroidery frame that can move laterally with respect to the upper surface of the bed, a sewing needle that can move up and down toward the needle drop hole in the bed, and a flat tape An embroidery sewing machine having a guide portion for guiding the needle piercing hole toward the needle drop hole, and in sewing work, intermittently moving the embroidery frame one after another with respect to the needle drop hole; The step of supplying the flat tape one after another toward the needle drop hole in relation to the movement of the embroidery frame and the vertical movement of the sewing needle in relation to the movement of the embroidery frame to remove the flat tape at the needle drop hole position. A step of sewing the cloth provided in the embroidery frame and supplying the flat tape one after another toward the needle drop hole. Each tangle formed one after another in the process of sewing flat tape on cloth Between each other, after forming each front entanglement part and before forming the next stage entanglement part, supply the flat tape more than the movement dimension of the embroidery frame, and connect each front stage entanglement part to the next stage entanglement part. By performing the process of forming the slack portion of the flat tape in a state where it swells three-dimensionally, the flat tape is swelled three-dimensionally one after another on the surface of the cloth as shown in FIG. The sewing method is performed while forming three-dimensionally.

JP-A-8-246323

  In this conventional flat tape sewing method, as is apparent from FIG. 6, in the process of sewing the flat tape 50 to the cloth 4, the tangled portions 53 are formed one after another. Both ends 51 of the three-dimensional bulging portions 47... 47 are parallel to the sewing direction of the flat tape 50 to form a linear pattern, and there is a problem that a stiff and sharp image is created.

The purpose of this application is to round the ends of the three-dimensional bulges that are formed between the entangled portions that are formed one after another in the process of sewing flat tape to the fabric, and to create a soft pattern. It is intended to provide a sewing method for tape that is brewed.
Other objects and advantages will be readily apparent from the drawings and the following description associated therewith.

  The tape sewing method according to the present invention includes a bed B having a needle drop hole 2, an embroidery frame 3 that can move laterally with respect to the upper surface 1 of the bed B, and the needle drop hole 2 in the bed. An embroidery sewing machine having a sewing needle 11 that can be moved up and down and a guide portion 26 for guiding the flat tape 50 toward the needle drop hole 2 is prepared, and the embroidery frame 3 is attached to the needle drop hole 2. The step of moving intermittently one after another, the step of supplying the flat tape 50 one after another toward the needle drop hole 2 in relation to the movement of the embroidery frame 3, and the step of moving the embroidery frame 3 The sewing needle 11 is moved up and down to sew the flat tape 50 at the needle drop hole position on the cloth 4 provided in the embroidery frame 3, and the flat tape 50 is supplied one after another toward the needle drop hole 2. In this process, the above-mentioned sewing needle 11 is moved up and down, and the flat tape at the needle drop hole position For each of the entangled portions 53 formed one after another in the process of sewing 0 to the cloth 4, the flat tape 50 is moved to move the embroidery frame after the former entangled portion 53 is formed and before the next entangled portion 53 is formed. In a method of sewing a flat tape to supply more excessively and to perform a step of forming a slack portion 54 of the flat tape 50 between each of the previous entangled portion 53 and the next entangled portion 53, In the step of supplying the flat tape 50 in excess of the moving dimension of the embroidery frame and forming a flat tape slack portion 54 between each preceding entanglement portion 53 and the next entanglement portion 53, the flat tape The direction of the guide portion 26 for guiding 50 toward the needle drop hole 2 is changed so that the direction of the flat tape is inclined more to the left side with respect to the sewing advance direction line 59 and to the right side with respect to the sewing advance direction line 59. Compare the right end side 51b of the flat tape with the left end side 51a. The direction of the flat tape 50 is changed by further changing the direction of the guide portion 26 for guiding the flat tape 50 toward the needle drop hole 2 and the step of forming the slack portion 54 in a state where the flat tape 50 is projected in a large arc shape. A slack portion 54 in a state in which the left end side 51a of the flat tape is extended in a larger arc shape than the right end side 51b on the left side of the sewing advance direction line 59 in a diagonal direction to the right with respect to the sewing advance direction line 59. The flat tape is sewed while alternately repeating the steps of forming the step S, so that large petal-like roundness is alternately formed on the left and right of the sewing progress line 59 of the flat tape.

  As described above, according to the present invention, when flat tape is sewed on a cloth, the sewing needles are moved up and down to sew the flat tape at the needle drop hole position on the cloth one after another. On the other hand, after forming each front entanglement part and before forming the next stage entanglement part, supply the flat tape more than the movement dimension of the embroidery frame, and between each front entanglement part and the next stage entanglement part. In the process of forming the slack portions of the flat tape respectively, the direction of the guide portion for guiding the flat tape toward the needle drop hole is set to the left oblique direction with respect to the flat tape stitching direction line. On the right side of the advancing direction line 59, a three-dimensional slack portion that protrudes in a large arc shape is formed. Next, the direction of the guide portion is sewn with a flat tape to the right side of the advancing direction line 59. Make a circle on the left side of the sewing advance direction line 59 in an oblique direction. A slack portion that protrudes in the shape of a tape is formed, and these steps are alternately repeated one after the other, while forming a large three-dimensional petal-like roundness alternately with respect to the right and left in the sewing advance direction of the flat tape. Since the tape is sewn, the petal pattern embroidery that is rounded and the soft petal pattern is continuous from side to side and full of three-dimensionality when you look at the tape as a whole. There is an epoch-making effect that a product can be easily sewn and formed on a cloth using a flat tape.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 (A) is for explaining the embroidery sewing machine A, and is a schematic side view showing the machine frame C and a part of the sewing machine head D, and (B) is a sewing machine head D shown in (A). The partial expanded sectional view for demonstrating the guide member 20 in (C) is a front view of the I arrow direction in (B).
FIG. 2 is an exploded perspective enlarged view for explaining the guide member 20 of FIG.
FIG. 3 is a diagram for explaining the relationship among the sewing needle, the presser foot, the embroidery frame, the vertical movement of the guide portion, the rotation of the guide portion, and the flat tape supply operation when the guide portion is lowered in the embroidery sewing machine. , It shows the operation of each part during the main shaft rotation 3 times.
FIG. 4 shows a process of sewing a flat tape on a cloth, in particular, supplying the flat tape 50 in excess of the embroidery frame moving dimension, and a flat tape between each preceding entangled portion and the next entangled portion. (A), (B), (C), (D) shows the time during which the entanglement portion 53e to the entanglement portion 53f are formed, and FIG. A, (B), (C), and (D) indicate states corresponding to the reference numerals (A), (B), (C), and (D) in FIG. 3, respectively. (In addition, in order to explain the inclination of the flat tape with respect to the cloth surface, a large number of lines 70 attached to the flat tape surface indicate lines orthogonal to both ends of the flat tape.)
FIG. 5 is a plan view for explaining an implementation state in which a flat tape is sewed three-dimensionally on the cloth in the procedure shown in FIG.
FIG. 6 is a view for explaining a sewing state by a conventional flat tape sewing method.

  In the flat tape sewing method in which the petal-like overhang portions 58 are provided on both sides of the present case, as shown in FIGS. 1 and 2, the bed B having the needle drop holes 2 and the upper surface 1 of the bed B are shown. An embroidery frame 3 that is laterally movable, a sewing needle 11 that is vertically movable toward the needle drop hole 2 in the bed, and a guide for guiding the flat tape 50 toward the needle drop hole 2. An embroidery sewing machine A provided with a section 26 is prepared.

The embroidery sewing machine A will be specifically described with reference to FIGS.
In the embroidery sewing machine A shown in FIG. 1, B is a well-known bed, C is a machine frame erected on the bed B as is well known, and D is a sewing machine head attached to the machine frame C.
Reference numeral 4 denotes a cloth mounted on the embroidery frame 3 as is well known. Reference numeral 5 denotes a main shaft for driving the needle bar 10, which is rotatable by a motor (not shown). Reference numeral 6 denotes the existence of a known control device including a computer including a CPU for controlling the operation of the embroidery sewing machine A.

  In the sewing head D, 9 indicates a cylindrical guide bracket (also referred to as a guide sleeve) fixed to the sewing machine arm 8. Reference numeral 10 denotes a known needle bar which is provided inside the guide bracket 9 so as to be movable up and down, and is connected to the main shaft 5 via a known drive mechanism. A sewing needle 11 is attached to the lower end of the needle bar 10 (the sewing needle 11 may be used for main sewing or a lock needle) and moves up and down toward the needle drop hole 2 as the main shaft 5 rotates. .

  Reference numeral 16 denotes a bobbin that is stored in a state where the flat tape 50 is wound as is well known. Reference numeral 17 denotes a bobbin support that rotatably supports the bobbin 16 and is integrally attached to the outer periphery of a rotating cylinder 38 to be described later.

Next, the guide member 20 including a guide portion for guiding the flat tape 50 toward the needle drop hole 2 will be described.
21 is a known nipple pipe that moves up and down at the outer peripheral position of the needle bar 10 and is reciprocally rotatable around the needle drop hole 2, and 22 is a support that is integrally attached to the lower end of the nipple pipe 21. Showing the body. Reference numeral 23 denotes a first guide member, and the base portion 23 a is attached to the outer periphery of the support body 22 with screws 30 and 31 so that it can reciprocate together with the support body 22. Reference numeral 23c denotes a guide portion for guiding the flat tape at a position above the flat tape 50 guided to the needle drop hole 2 position, and 23d denotes a needle through hole through which the sewing needle 11 passes. Reference numeral 25 denotes a second guide member. As shown in the figure, the base portion 25a is attached to the outer periphery of the support 22 with screws 31 and 32 together with the first guide member 23 so that it can reciprocate together with the support 22. . Reference numeral 26 denotes a guide portion provided at the lower portion of the second guide member 25, and 26 a denotes a guide hole through which the flat tape 50 fed out from the bobbin 16 is inserted. Reference numeral 27 denotes a guide piece provided at the lower end of the second guide member 25, facing the lower surface side of the guide portion 23 c of the first guide member 23 with a slight gap, and guiding the flat tape 50 onto the needle drop hole 2. I can do it. Reference numeral 27a denotes a notch for passing the sewing needle 11. The guide piece 27 is also used as a cloth presser that holds the cloth 4 at the bottom dead center.
Reference numeral 28 denotes a pressing member (spring plate) mounted on the outside of the second guide member 25. The tip portion 28a is inserted into the guide hole 26a of the second guide member 25, the tip is in contact with the inner wall surface of the guide hole 26a by elastic force, and the flat tape 50 located in the guide hole 26a is directed in the supply direction 61. The movement is allowed, and the movement in the opposite direction (the direction opposite to the direction of the arrow 61 shown in FIG. 1B) can be prevented.

Next, a mechanism for moving the guide member 20 up and down will be described.
Reference numeral 37 denotes a nipple ring attached to the upper end of the nipple pipe 21. Reference numeral 36 denotes a base portion connected to a drive shaft of a pulse motor 35 via a known drive mechanism (not shown), and is moved up and down by the drive of the motor 35. The stroke arm is shown. The arm portion 36a of the stroke arm 36 is engaged with the engagement groove 37a of the nipple ring 37 so that power can be transmitted in the vertical direction.
As the pulse motor 35 is driven, the stroke arm 36 moves up and down, and the guide member 20 also moves up and down as the nipple ring 37, the nipple pipe 21 connected thereto, and the support 22 move up and down. As the guide member 20 moves up and down, the guide portion 26 also moves up and down. As the guide portion moves downward (in the direction of arrow 63 in FIG. 1B), the flat tape 50 is unwound from the bobbin 16 and the needle drop. It is supplied toward the hole 2.

Next, a mechanism for reciprocatingly rotating the guide member 20 will be described.
Reference numeral 38 denotes a rotating cylinder that is reciprocally rotatable around the needle drop hole 2 on the outer periphery of the guide bracket 9. Denoted at 43 is a linkage piece fixed to the lower end of the rotating cylinder 38, and the engagement portion 43a at the tip thereof is engaged with an engagement groove 22a formed along the vertical direction with respect to the outer periphery of the support body 22. It is. 39 is a known pulse motor, 40 is a pulley linked to the drive shaft 39a of the motor 39, 42 is a pulley linked to the rotating cylinder 38, and 41 is a timing wound around the pulleys 40 and 42. Indicates belt. As the motor shaft 39a rotates, the pulley 40, the timing belt 41, the pulley 42, and the rotating cylinder 38 are rotated, and the guide member 20 reciprocates as the motor shaft 39a rotates. By the reciprocating rotation of the guide member 20, the guide portion 26 also reciprocates around the needle drop hole 2, and the direction of the guide portion 26 is set to the left or right side of the sewing advance direction line 59 as shown in FIG. In other words, the flat tape 50 can be supplied toward the needle drop hole 2 from the left diagonal direction or right diagonal direction from the sewing advance direction line 59.
The rotation angle of the guide portion 26 may be arbitrarily set depending on the width dimension and material of the flat tape. In many cases, for example, 60 degrees (30 degrees each from the center position T around the needle drop hole 2). ).
Next, FIG. 3 shows the state of related operations such as the supply of flat tape as the sewing needle 11, the embroidery frame 3, the guide member 20 and the guide portion are lowered. These operations may be performed by computer control by the control device 6 as is well known.

A method of sewing a flat tape on a cloth using the above structure will be described.
The flat tape sewing method including the petal-like overhang portions 58 on both sides of the present case is a step of intermittently moving the embroidery frame 3 with respect to the needle drop hole 2 one after another as is normally done. A step of successively feeding the flat tape 50 toward the needle drop hole 2 in relation to the movement of the embroidery frame 3, and a vertical movement of the sewing needle 11 in relation to the movement of the embroidery frame 3. A step of sewing the flat tape 50 at the pit hole position on the cloth 4 provided on the embroidery frame 3 is performed. In the process of successively feeding the flat tape 50 toward the needle drop hole 2, the sewing needle 11 is moved up and down to form the flat tape 50 at the needle drop hole position in the process of sewing the cloth 4 one after another. After the former entanglement portions 53 are formed and before the next entanglement portions 53 are formed, the flat tape 50 is supplied in excess of the embroidery frame movement dimension between the entanglement portions 53 to be formed. A step of forming a slack portion 54 of the flat tape 50 between the portion 53 and the next entanglement portion 53 is performed.

  In the step of supplying the flat tape 50 in excess of the moving dimension of the embroidery frame and forming a flat tape slack 54 between each preceding entangled portion 53 and the next entangled portion 53, the flat tape The direction of the guide portion 26 for guiding the guide 50 toward the needle drop hole 2 is changed, the direction of the flat tape is directed diagonally to the left side from the sewing advance direction line 59, and the flat tape is provided to the right side from the sewing advance direction line 59. The step of forming the slack portion 54 in a state where the right end side 51b of the right end side 51b is projected in a larger arc than the left end side 51a, and the guide portion 26 for guiding the flat tape 50 toward the needle drop hole 2 Further changing the direction, the direction of the flat tape 50 is directed obliquely to the right with respect to the sewing advance direction line 59, and on the left side of the sewing advance direction line 59, the left end side 51a of the flat tape is larger than the right end side 51b. The slack portion 54 in the state of being projected in an arc shape Repeating the step of forming alternating the left and right portions of the flat tape sewing leading direction lines, while allowing large petals rounded are alternately formed, so add a tape sewing.

This point will be specifically described with reference to FIGS. FIG. 4 shows a process in which the sewing needle 11 is moved up and down as usual, and the flat tape 50 at the needle drop hole position is sewn on the cloth 4, and the entangled portions 53a to 53d are already formed. Indicates. Therefore, an example of the operation from the formation of the entanglement portion 53d to the formation of the entanglement portions 53e and 53f will be described. The sewing needle 11, the embroidery frame 3, the guide member 20, the flat tape 50, and the like are assumed to be in a state indicated by reference numeral IV in FIG.
As the guide portion 26 rotates to the left side from the sewing advance direction line 59 and descends to the bottom dead center, the flat tape 50 is directed from the diagonally left side toward the needle drop hole 2 from the sewing advance direction line 59 ( In the direction of arrow 64 in FIG. 4 (A), the amount is supplied in excess of the embroidery frame movement dimension. As shown in FIG. 4A, the excessively supplied flat tape 50 is slackened between the entangled portion 53d and the next entangled portion planned position e, and a slackened portion 54e is formed. In the slack portion 54e, an arcuate bulging portion 55 is formed on the right side R of the sewing advance direction line 59, with the right end side 51b of the flat tape projecting in a larger arc shape than the left end side 51a. The left end 51a is formed with a pointed ridge 57 that is smaller than the right end 51b and has a mountain-like shape.
Subsequently, as normally performed, the sewing needle 11 passes through the needle drop hole 2 to reach the bottom dead center, and the sewing thread 48 is entangled with the lower thread and then lifted. As shown in FIG. Form. Then, the slack portion 54e is tightened by the sewing thread (holding thread) 48, and the ridges 57 shown in FIG. 4 (A) are pressed down on the cloth surface so that the ridges 56 are formed as shown in FIG. 4 (B). A large petal-shaped rounded overhang 58 is formed on the right side of the flat tape sewing advance direction line 59.

Subsequently, as the guide member 26 rotates to the right side from the sewing advance direction line 59 and descends to the bottom dead center, the flat tape 50 moves from the sewing advance direction line 59 to the needle drop hole 2 from the diagonally right side. In the direction (in the direction of arrow 65 in FIG. 4C), it is supplied in excess of the embroidery frame movement dimension. As shown in FIG. 4C, the excessively supplied flat tape 50 is slackened between the entangled portion 53e and the next-stage entangled portion planned position f, and a slackened portion 54f is formed. In the slack portion 54f, an arcuate bulging portion 55 is formed on the left side L of the sewing advance direction line 59. The arcuate bulging portion 55 is formed such that the left end side 51a of the flat tape is larger in the arc than the right end side 51b. The right end side 51b has a small peak as compared with the left end side 51a, and a pointed ridge 57 is formed.
In the same manner as described above, the sewing needle 11 passes through the needle drop hole 2 and reaches the bottom dead center, and the sewing thread 48 is entangled with the lower thread and ascends to form an entangled portion 53f as shown in FIG. 4 (D). To do. Then, the slack portion 54f is tightened with a sewing thread (presser thread) 48 as shown in the figure, and the pointed raised portion 57 shown in FIG. 4C is pressed down on the cloth surface and raised as shown in FIG. 4D. A portion 56 is formed, and a large petal-shaped rounded overhang 58 is formed on the left side of the flat tape sewing advance direction line 59.
By repeating the operation as described with reference to FIGS. 4A to 4D, the flat tape 50 can be applied to the left and right sides of the flat tape sewing advance direction line 59 as shown in FIG. The tape is sewed while alternately forming large petal-shaped rounds.

In the above description, the flat tape 50 is supplied in excess of the moving dimension of the embroidery frame, and the flat tape slack portion 54 is formed between the front entanglement portion 53 and the next entanglement portion 53. In the process, the example of the means for moving the guide portion 26 up and down and supplying the flat tape 50 as it descends has been described. However, as means for supplying the flat tape 50, the embroidery frame may be advanced and retracted in the sewing advance direction in addition to or instead of the above means.
In that case, after each entanglement portion 53 is formed and before the next entanglement portion 53 is formed, the embroidery frame is advanced by an excess dimension from the dimension between the previous and next entanglement portions, and then the next entanglement portion 53 is formed. What is necessary is just to make it retreat to the entanglement part formation plan position, and to supply a flat tape excessively with the movement.
In this case, the guide portion 26 is described as moving up and down in this specification. However, it is understood that the guide portion 26 is moved forward and backward relative to the embroidery frame. In this case, the guide portion is moved upward (see FIG. The movement in the direction of the arrow 62 shown) may be interpreted as the backward movement, and the downward movement (movement in the direction of the arrow 63 shown in FIG. 1B) may be interpreted as the forward movement.

(A) is a schematic side view for explaining the embroidery sewing machine A, (B) is a partially enlarged sectional view of the sewing head D shown in (A), and (C) is a front view in the direction of arrow I in (B). . The disassembled perspective enlarged view of a guide member. The figure for demonstrating the relationship of the sewing needle in a embroidery sewing machine, a cloth presser, an embroidery frame, the vertical movement of a guide part, the rotation of a guide part, the supply operation | movement of the flat tape accompanying a guide part fall, etc. The schematic diagram for demonstrating the process of sewing a flat tape with respect to cloth. The top view of the implementation state which sewed the flat tape three-dimensionally with respect to cloth in the procedure shown in FIG. It is a figure for demonstrating the sewing state by the sewing method of the conventional flat tape, (B) is VI-VI sectional view taken on the line of (A).

Explanation of symbols

A ... Embroidery sewing machine, B ... Bed, C ... Machine frame, D ... Head, 1 ... Upper surface, 2 ... Needle drop hole, 3 ... Embroidery frame, 4 ... · Cloth, 5 · · · spindle, 6 · · · Control device, 8 · · · sewing machine arm, 9 · · · guide bracket, 10 · · · needle bar, 11 · · · sewing needle, 16 · · · bobbin, 17 ...... Supporting tool, 20 ... guide member, 21 ... nipple pipe, 22a ... engagement groove, 23 ... first guide member, 25 ... second guide member, 26 ... Guide part, 28 ... Holding member (spring plate), 35 ... Motor, 36 ... Stroke arm, 37 ... Nipple ring, 38 ... Rotating cylinder, 39 ... Motor, 40 ... Pulley, 41 ... Timing belt, 42 ... Pulley, 43 ... Linking piece, 50 ... Flat tape, 51 -Edge part, 51a ... left end side, 51b ... right end side, 53 ... entanglement part, 54 ... slack part, 55 ... arc-shaped bulge part, 56 ... bulge part, 57・ ・ ・ Pointed ridge, 58 ・ ・ ・ Overhang, 59 ・ ・ ・ Sewing advance direction line, 60 ・ ・ ・ Sewing advance direction, 61 ・ ・ ・ Supply direction

Claims (1)

A bed with needle holes,
An embroidery frame that can move laterally with respect to the upper surface of the bed;
A sewing needle that is movable up and down toward the needle hole in the bed;
Prepare an embroidery sewing machine with a guide part for guiding the flat tape toward the needle drop hole,
A step of intermittently moving the embroidery frame one after another with respect to the needle drop hole;
Supplying the flat tape one after another toward the needle drop hole in relation to the movement of the embroidery frame;
The sewing needle is moved up and down in relation to the movement of the embroidery frame, and a flat tape at the needle drop hole position is sewn on the cloth provided on the embroidery frame,
In the process of supplying the flat tape one after another toward the needle drop hole,
Move the sewing needle up and down and sew the flat tape at the needle drop hole position on the cloth. After each entanglement part is formed one after another, before the next entanglement part is formed. In addition, the flat tape is supplied in excess of the moving dimension of the embroidery frame, and the flat tape is subjected to a process of forming a slack portion of the flat tape between each preceding entanglement portion and the next entanglement portion. In the sewing method,
In the step of supplying the flat tape in excess of the embroidery frame moving dimension and forming a slack portion of the flat tape between the entangled portion of each previous stage and the entangled portion of the next stage,
Change the direction of the guide part for guiding the flat tape toward the needle drop hole, and turn the flat tape toward the left diagonal direction with respect to the sewing advance direction line.
A step of forming a slack portion in a state where the right end side of the flat tape is projected in a large arc shape compared to the left end side on the right side of the sewing advance direction line;
Change the direction of the guide part for guiding the flat tape toward the needle drop hole, and turn the direction of the flat tape diagonally to the right with respect to the sewing advance direction line.
The process of forming a slack portion in a state where the left end side of the flat tape is projected in a large arc shape compared to the right end side on the left side of the sewing advance direction line is alternately repeated,
Featuring petal-shaped overhangs on both sides, which are designed to sew the tape while alternately forming large petal-shaped rounds to the left and right of the line of sewing direction of flat tape How to sew flat tape.

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