US20080087206A1 - Sequin feeder apparatus and sewing machine capable of sewing sequins - Google Patents

Sequin feeder apparatus and sewing machine capable of sewing sequins Download PDF

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Publication number
US20080087206A1
US20080087206A1 US11/870,703 US87070307A US2008087206A1 US 20080087206 A1 US20080087206 A1 US 20080087206A1 US 87070307 A US87070307 A US 87070307A US 2008087206 A1 US2008087206 A1 US 2008087206A1
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Prior art keywords
sequin
feed
sewing
strip
continuous
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US11/870,703
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English (en)
Inventor
Aisuke Murase
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Tokai Kogyo Sewing Machine Co Ltd
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Tokai Kogyo Sewing Machine Co Ltd
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Assigned to TOKAI KOGYO MISHIN KABUSHIKI KAISHA reassignment TOKAI KOGYO MISHIN KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MURASE, AISUKE
Publication of US20080087206A1 publication Critical patent/US20080087206A1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/12—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing for fastening articles by sewing
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/06—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C7/00—Special-purpose or automatic embroidering machines
    • D05C7/08—Special-purpose or automatic embroidering machines for attaching cords, tapes, bands, or the like

Definitions

  • the present invention relates generally to sequin feeder apparatus for use in sewing machines which sew a sequin onto a sewing workpiece while severing the sequin from a ribbon or strip of continuously-connected sequins. More particularly, the present invention relates to a sequin feeder apparatus which is capable of changing the sequin to be sewn from one type to another in the middle of sewing, as well as a sewing machine suited to sew sequins of different pitches in combination.
  • Example of the conventional sequin feeder apparatus is known from German Utility Model Registration No. G9209764.2, U.S. Pat. No. 5,755,168 or German Patent No. DE19538084 (corresponding to U.S. Pat. No. 5,755,168 above).
  • Such a known sequin feeder apparatus includes a feed mechanism, which causes a strip of a multiplicity of continuously-connected sequins (or spangles) (hereinafter referred to as “continuous sequin strip”) to be let out or paid out from a reel, having the continuous sequin strip wound thereon, onto a support plate and then, through predetermined forward and rearward (i.e., advancing and retracting) movement of a feed lever, feeds the continuous sequin strip at a predetermined pitch corresponding to the size of each sequin of the strip.
  • One sequin is sewn at a time onto a sewing workpiece while being severed or cut off from the continuous sequin strip having been fed in interlocked relation to a sewing operation by a needle
  • Japanese Patent Application Laid-open Publication No. 2004-167097 discloses an embroidery sewing machine including a sequin feeder apparatus attached to a sewing head so that sequins can be sewn onto a sewing workpiece, such as an embroidering fabric.
  • Korean Patent Application Laid-open Publication No. 10-2006-68405 and Korean Patent Publication No. 10-614630 disclose an apparatus capable of changing or switching the sequin to be sewn to from one type to another in the middle of sewing.
  • the disclosed apparatus includes two sequin reels each having wound thereon a different strip of continuously-connected sequins of a predetermined shape and color, and feeding rods for individually feeding out the respective continuous sequin strips, paid out from the reels, to a needle entry point.
  • the disclosed apparatus can successively perform sequin sewing while switching between the continuous sequin strips to be fed toward the needle entry point.
  • the disclosed apparatus is provided with only one, common cutter section for cutting a sequin off from any one of the sequin strips; namely, a sequin of one of the continuous sequin strips, which has been fed out by the corresponding feeding rod, is cut off by the common cutter section. Therefore, although sequins can be made different in size between two continuous sequin strips to be set on the reels, the sequin sizes can no longer be changed freely once continuous sequin strips having sequins of predetermined sizes are set.
  • the common cutter section shared between the two continuous sequin strips, comprises a movable cutter blade having a predetermined stepped structure and a fixed cutter blade (or die) having a similar predetermined stepped structure, and the stepped structures of these movable and fixed cutter blades have to be mechanically fixed. Namely, if the apparatus is constructed so that continuous sequin strips of different sequin sizes are set on the two reels, the mechanically-fixed structures of the common cutter section can not deal with the different sequin sizes.
  • an object of the present invention to provide an improved sequin feeder apparatus which includes a plurality of sequin feed units such that the sequin to be sewn can be changed from one type to another in the middle of sewing and which allows a sequin feed amount of each of the sequin feed units to be changed as desired. It is another object of the present invention to provide an improved sewing machine which is suited to sew sequins of desired different feed pitches in combination using such an improved sequin feeder apparatus.
  • a sequin feeder apparatus which comprises: at least two sequin feed units each including a sequin feed mechanism for feeding a continuous sequin strip toward a predetermined cutting position and a sequin-cutting cutter section located in the predetermined cutting position; a sequin selection mechanism for selecting one of the at least two sequin feed units and positioning the selected one sequin feed unit in a predetermined sewing operation position; and a drive mechanism for engaging with the sequin feed mechanism of the one sequin feed unit, positioned in the predetermined sewing operation position, and thereby driving, in response to a sewing operation, the engaged sequin feed mechanism to feed the continuous sequin strip toward the predetermined cutting position.
  • the predetermined cutting position in each of the sequin feed units is adjustable independently of the predetermined cutting position in the other sequin feed unit, and the cutter section is driven, in response to the sewing operation, to cut a sequin off from the continuous sequin strip having been fed to the predetermined cutting position.
  • a sewing machine where the aforementioned sequin feeder apparatus of the present invention is provided in association with a sewing head.
  • Each of the sequin feed units includes its own sequin feed mechanism and sequin-cutting cutter section, and the predetermined cutting position in each of the sequin feed units is adjustable independently of the predetermined cutting position in the other sequin feed unit.
  • the cutting position where the cutter section cuts a sequin off from the sequin strip, can be adjusted as desired independently of the cutting position in the other sequin feed unit; thus, the sequin feed units can respectively handle sequins of desired feed sizes.
  • the sewing machine to which is applied the sequin feeder apparatus of the present invention, can perform sequin sewing while combining sequins of desired different feed pitches.
  • FIG. 1 is a perspective view showing a general outer appearance of an embroidery sewing machine to which is applied a sequin feeder apparatus of the present invention
  • FIG. 2 is a right side view showing a first embodiment of the sequin feeder apparatus of the present invention, which particularly shows the sequin feeder apparatus held in a lowered position;
  • FIG. 3 is a left side view of the first embodiment of the sequin feeder apparatus
  • FIG. 4 is a front view of the first embodiment of the sequin feeder apparatus
  • FIG. 5 is a right side view of the first embodiment of the sequin feeder apparatus, which particularly shows the sequin feeder apparatus held in an evacuated position;
  • FIG. 6 is a left side view of the first embodiment of the sequin feeder apparatus, which shows the sequin feeder apparatus held in the evacuated position;
  • FIG. 7 is a rear perspective view showing in enlarged scale parts of sequin feed units, sequin selection mechanism and feeding drive mechanism in the first embodiment of the sequin feeder apparatus;
  • FIG. 8 is a rear view of the first embodiment of the sequin feeder apparatus
  • FIG. 9 is a sectional view taken along the I-I line of FIG. 8 ;
  • FIG. 10 is a plan view showing a manner in which a leading sequin is cut off from a continuous sequin strip held on a support plate in one of the sequin feed units in the first embodiment;
  • FIG. 11 is a front view showing in enlarged scale parts of the sequin feed units and sequin selection mechanism when where the first sequin feed unit is selected;
  • FIG. 12 is a front view showing in enlarged scale parts of the sequin feed units and sequin selection mechanism when the second sequin feed unit is being selected;
  • FIG. 13 is a perspective view similar to FIG. 7 , which shows parts of the sequin feed units, sequin selection mechanism and feeding drive mechanism when the second sequin feed unit is selected;
  • FIG. 14 is a side view of a supporting plate of the second sequin feed unit taken from a side opposite a side where the sequin feed mechanism is disposed;
  • FIG. 15 is a sectional plan view showing a manner in which respective cutting positions of the first and second feed units are adjusted in accordance with sequin sizes of continuous sequin strips set on the feed units;
  • FIG. 16 is a right side view of a second embodiment of the sequin feeder apparatus.
  • FIG. 17 is a right side view showing in enlarged scale a detection device employed in the second embodiment
  • FIG. 18 is a view taken in a direction of arrow A of FIG. 17 ;
  • FIG. 19 is a sectional view taken along the B-B line of FIG. 17 ;
  • FIG. 20 is a view showing a state where a supply of one of continuous sequin strips has run out
  • FIG. 21 is a view showing an example of a sequin pattern to be made by alternately sewing sequins of different types to a workpiece;
  • FIG. 22 is a view showing another example of the sequin pattern to be made by alternately sewing sequins of different types to a workpiece;
  • FIG. 23 is a side view showing a state where a previous-sewn stitch position has got into under the sequin feed unit
  • FIG. 24 is a view showing an example of a sequin pattern to be by alternately sewing sequins of different types to a workpiece in overlapped relation to each other;
  • FIG. 25 is a view showing an example sequence of operations for sewing the sequin pattern, comprising two sequins of different types, to the workpiece in overlapped relation to each other;
  • FIG. 26 is an exploded rear perspective view of a sequin feeder apparatus in accordance with another embodiment of the present invention.
  • FIG. 1 shows a four-head embroidery sewing machine equipped with four sewing machine heads H.
  • Needle bar cases 2 are provided in corresponding relation to the sewing machine heads H, and a needle plate 70 is disposed under each of the needle bar cases 2 .
  • Sequin feeder apparatus 1 is attached to the left side and/or right side of each of the needle bar cases 2 ; in the instant embodiment, the sequin feeder apparatus 1 is attached to only the left side of each of the needle bar cases 2 .
  • Each of the needle bar cases 2 comprises a multi-needle structure, and, in the case where the sequin feeder apparatus 1 is attached to the left side of the associated needle bar case 2 as in the illustrated example, the leftmost needle bar in the needle bar case 2 is used as a sequin sewing needle bar (or sequin needle bar).
  • an embroidery frame 80 is driven in left-right (X) and front-rear (Y) horizontal directions in accordance with predetermined sewing data.
  • FIG. 2 is a right side view showing in enlarged scale a part of one of the sequin feeder apparatus 1
  • FIG. 3 is a left side view of the sequin feeder apparatus 1
  • FIG. 4 is a front view of the sequin feeder apparatus 1
  • the sequin feeder apparatus 1 includes a fixed base 3 fixed to the left side surface of the needle bar case 2 for attaching the feeder apparatus 1 to the machine head H, and a mounting base 4 mounted on the fixed base 3 in such a manner that it can ascend and descend relative to the fixed base 3 .
  • Two guide rods 5 are fixed to the base 3
  • a screw shaft 6 is pivotally mounted on the base 3 ; note that, in FIG.
  • FIGS. 1 and 3 only one of the guide rods 5 is shown with the other guide rod 5 located behind the screw shaft 6 and thus invisible in FIG. 3 .
  • the screw shaft 6 is connected to the shaft of a motor 7 fixed to the base 3 .
  • Moving member 8 slidably fitted on the two guide rods 5 is fixed to the mounting base 4 .
  • Nut member 9 screwed on the screw shaft 6 is fixed to the moving member 8 .
  • the mounting base 4 is vertically movable, along the guide rods 5 , between a lowered position in which the sequin feeder apparatus 1 performs a sequin sewing operation and an evacuated position in which the sequin feeder apparatus 1 does not perform a sequin sewing operation.
  • FIGS. 5 and 6 show a state of the apparatus when the sequin feeder apparatus 1 is in the evacuated position.
  • a positioning block 12 is fixed to the mounting base 4 , and, when the mounting base 4 is in the lowered position, this positioning block 12 fits between two positioning plates 11 having respective distal end portions that project along and are fixed to left and right surfaces of the base 3 . With the positioning block 12 fitting between the two positioning plates 11 , the mounting base 4 in the lowered position is positioned in the left-right horizontal direction.
  • Each of the sequin feeder apparatus 1 generally comprises: two sequin feed units 20 and 21 ; a sequin selection mechanism (composed of components 44 - 50 , 60 - 67 and the like that will be later described with reference to FIG. 7 etc.) for selecting any one of the two sequin feed units 20 and 21 and positioning the selected sequin feed unit 20 or 21 in a predetermined sewing operation position; and a feeding drive mechanism (composed of components 51 - 59 and the like that will be later described with reference to FIG. 7 etc.) for engaging with a sequin feed mechanism 19 of the one sequin feed unit 20 or 21 positioned in the predetermined sewing operation position.
  • sequin feed units 20 and 21 sequin selection mechanism ( 44 - 50 , 60 - 67 and the like) and feeding drive mechanism (composed of components 51 - 59 and the like) are mounted on the above-mentioned mounting base 4 so that they are vertically movable (ascendable and descendable) between an evacuated position for not performing sequin sewing and a lowered position for performing sequin sewing.
  • each of the sequin feed units 20 and 21 includes the sequin feed mechanism 19 for feeding a continuous sequin strip 13 toward a predetermined cutting position, and a sequin-cutting cutter section (composed of components 36 and 23 b that will be later described with reference to FIG. 7 etc.) located in the predetermined cutting position.
  • a sequin-cutting cutter section located in the predetermined cutting position.
  • two reels (sequin holder sections or sequin strip supply sources) 14 each having a desired continuous sequin strip 13 wound thereon, are provided, in corresponding relation to the sequin feed units 20 and 21 , for feeding the continuous sequin strips 13 to the corresponding sequin feed units 20 and 21 .
  • Each of the reels 14 corresponding to the sequin feed units 20 and 21 holds, i.e. has wound thereon, the continuous sequin strip 13 comprising a multiplicity of continuously-connected sequins each having a desired shape, color and size (i.e., feed size corresponding to a dimension from the needle-passing hole to the outer periphery of the sequin).
  • the instant embodiment is capable of using one sequin feeder apparatus 1 to sew a combination of two different types of sequins as sequins to be sewn to make an embroidery pattern.
  • Two reels (sequin strip supply sources) 14 holding two different types of sequins, suiting such a combined sequin-sewing design, are set in a manner as shown in FIG. 4 .
  • the left reel 14 corresponds to the left sequin feed unit 20
  • the right reel 14 corresponds to the right sequin feed unit 21 .
  • These two reels 14 are coaxially mounted side by side, or juxtaposed, on a same mounting shaft provided on the fixed base 3 . Further, pairs of first, second and third rollers 15 , 16 and 17 for guiding portions of the continuous sequin strips 13 paid out from the reels 14 are supported on the fixed base 3 , and fourth rollers 18 are supported on the mounting base 4 ; each of the pairs of the rollers 15 , 16 , 17 and 18 is also composed of two rollers coaxially mounted side by side. Further, two tension rollers 10 are provided between the first rollers 15 and the second rollers 16 , and these tension rollers 10 are supported on tension bases 72 and 73 rotatably mounted on the shafts of the first and second rollers 15 and 16 , respectively.
  • Torsion springs (not shown) are mounted on the shafts of the first and second rollers 15 and 16 , so that the tension base 72 is normally urged in a clockwise direction of FIG. 2 while the tension base 73 is normally urged in a counterclockwise direction of FIG. 2 and these bases 72 and 73 are normally held in abutting engagement with stoppers 74 secured to the fixed base 3 .
  • Portion of the continuous sequin strip 14 paid out from each of the reels 14 is directed to and supported on the first roller 15 , tension roller 10 , second roller 16 , third roller 17 and fourth roller 18 in the mentioned order as shown in FIG. 2 , and then guided to the sequin feed mechanism 19 provided on the mounting base 4 .
  • the continuous sequin strip 13 is appropriately pulled by the fourth roller 18 , so that the sequin strip 13 can be prevented from greatly slackening during the movement of the mounting base 4 to the evacuated position.
  • FIG. 7 is a rear perspective view showing in further enlarged scale parts of the sequin feed units 20 and 21 , sequin selection mechanism ( 44 - 50 , 60 - 67 , etc.) and feeding drive mechanism ( 51 - 59 , etc.),
  • FIG. 8 is a rear view of the sequin selection mechanism and feeding drive mechanism, and
  • FIG. 9 is a sectional view taken along the I-I line of FIG. 8 .
  • the two sequin feed units 20 and 21 are provided on the mounting base 4 in opposed relation to each other and horizontally slidable relative to the mounting base 4 along sliding rods 47 and 48 provided on the mounting base 4 .
  • Such sliding movement of the sequin feed units 20 and 21 is effected by the sequin selection mechanism ( 44 - 50 , 60 - 67 , etc.); more specifically, the sequin selection mechanism selects and connects any one of the feed units 20 or 21 to the feeding drive mechanism ( 51 - 59 , etc.), and thus, a sequin is fed out from the selected sequin feed unit 20 or 21 by a driving force of the feeding drive mechanism ( 51 - 59 , etc.) being transmitted to the selected sequin feed unit 20 or 21 .
  • the two sequin feed units 20 and 21 provided in opposed relation to each other are constructed of same mechanical components (i.e., mechanically constructed in the same manner), the feed units 20 and 21 are arranged and shaped in symmetrical relation to each other. Thus, details of the mechanical components of only one of the sequin feed units 20 will be described representatively with reference to FIG. 9 .
  • the sequin feed unit 20 generally comprises a supporting plate 22 ; a support plate 23 provided horizontally at the lower end of the supporting plate 22 ; the sequin feed mechanism 19 composed of various components (indicated by 24 - 35 etc.) mounted on the supporting plate 22 ; and the cutter section (including fixed cutter blade 23 b and movable cutter blade 36 ) located in the predetermined cutting position at the distal end of the support plate 23 . Portion of the continuous sequin strip paid out from the corresponding reel 14 is directed onto the support plate 23 and then sent toward the cutting position or cutter section by means of the sequin feed mechanism 19 .
  • the support plate 23 has a slit 23 a (see FIG. 10 ) having an appropriate dimension in the front-rear or Y direction. The slit 8 a is provided to allow entry therein of an engaging claw 33 a of a lock lever 33 of the sequin feed mechanism 19 as will be later described.
  • Link arm 25 is fixed to the shaft 24 supported on the supporting plate 22 , and a link pin having a slanted distal end surface is fixed to a free end portion of the link arm 25 .
  • Feed lever 29 having an engaging portion 29 a at its distal end, is pivotably supported, via a shaft 30 , on a free end portion of the pivot arm or lever 27 .
  • Torsion spring (not shown) for normally urging the feed lever 29 in the clockwise direction is fitted on the shaft 30 , by which the distal end portion of the feed lever 29 is normally urged toward the support plate 23 .
  • the pivot lever 27 With the feed lever 29 urged in the clockwise direction, the pivot lever 27 is normally urged in a direction where it abuts against a stopper 31 .
  • the stopper 31 is in the form of a threaded rod screwed to a bracket 32 secured to the supporting plate 22 , and the stopper 31 is locked by screwing up of a nut.
  • the pivot lever 27 abuts against the rear end of the stopper 31 .
  • the lock lever 33 is provided over the feed lever 29 .
  • the lock lever 33 has an engaging claw (or engaging projection) 33 a at its one end and a stopper portion 33 b at its other end. Intermediate portion of the lock lever 33 is pivotably supported, via a pin 35 , on a support block 34 that is in turn fixed to the supporting plate 22 .
  • the engaging claw 33 a of the lock lever 33 is inserted through a through-hole 29 b formed in the feed lever 29 .
  • Torsion spring (not shown) is provided on the pin 35 fixed to the support block 34 , and the lock lever 33 is normally biased, by that torsion spring, in the counterclockwise direction. With the lock lever 33 normally biased in the counterclockwise direction like this, the lock lever 33 in its free state abuts against a stopper portion 34 a of the support block 34 , and thus, the lock lever 33 is held in a posture or position where the end of the engaging claw 33 a projects into the slit 23 a of the support plate 23 .
  • the engaging claw 33 a of the lock lever 33 held in this posture engages the sewing hole Sa of one of the sequins S of the continuous sequin strip 13 led onto the support plate 23 to thereby immovably lock the continuous sequin strip 13 during sequin sewing (cutting).
  • Such movable cutter blade 36 is pivotably supported via a pin 37 on a distal end portion of the support plate 23 and is normally held, via a torsion spring 38 , in a retracted or evacuated posture or position where it is spaced upward from the fixed cutter blade 23 b .
  • the movable cutter blade 36 is depressed by a needle clamp 40 , provided at the lower end of a needle bar 39 , as the needle bar 39 descends.
  • Such depression by the needle clamp 40 causes the movable cutter blade 36 to pivot downward against the resilient biasing force of the torsion spring 38 , so that the movable cutter blade 36 cuts the continuous sequin strip 13 across a connecting portion Sb (see FIG. 10 ) of the leading sequin S in conjunction with the fixed cutter blade 23 b .
  • the needle clamp 40 ascends together with the needle bar 39 , the movable cutter blade 36 returns to its evacuated position by the restoring or resilient force of the torsion spring 38 .
  • Bracket 41 is fixed to the supporting plate 22 , and a guide section 42 for directing the continuous sequin strip 13 onto the support plate 23 is provided on the bracket 41 .
  • the guide section 42 is replaceable with another one depending on the width of the continuous sequin strip 13 to be set on the sequin feeder apparatus.
  • Holding member 43 which is in the form of a resilient plate such as a spring steel plate, is fixed to the bracket 41 .
  • the holding member 43 has its free end portion resiliently abutted against the upper surface of the support plate 23 , and the portion of the continuous sequin strip 13 , delivered via the guide section 42 onto the support plate 23 , is passed between the support plate 23 and the holding member 43 .
  • the sequin selection mechanism ( 44 - 50 , 60 - 67 and the like).
  • the sequin feed units 20 and 21 constructed in the aforementioned manner are secured to a slide plate 45 via the respective fixed brackets 44 .
  • Slide members 46 are fixed to left and right end portions of the slide plate 45 .
  • the two slide members 46 are slidably supported on a first rod 47 that is in turn fixed to the mounting base 4 .
  • Second rod 48 is secured at opposite ends to and extends between the two fixed brackets 44 ; more specifically, the second rod 48 is slidably supported on support sections 49 a of a support member 49 .
  • the support member 49 is fixed to a bracket 50 that is in turn fixed to the mounting base 4 via a bearing member 51 .
  • FIG. 7 shows a state of the apparatus when one of the sequin feed units 20 (hereinafter referred to as “first sequin feed unit 20 ”) is selected.
  • FIG. 11 is a front view showing in further enlarged scale the sequin feed units 20 and 21 and sequin selection mechanism in the state of FIG. 7 .
  • FIG. 12 is a front view similar to FIG. 11 , but shows a state of the apparatus when the other sequin feed unit 21 (hereinafter referred to as “second sequin feed unit 21 ”) is selected.
  • FIG. 13 is a perspective view similar to FIG. 7 , but shows the state of the apparatus when the other or second sequin feed unit 21 is selected.
  • a connecting arm 60 is pivotably connected at one end to the slide plate 45 and connected at the other end to one end of a pivot lever 62 that is in turn pivotably supported on a motor base 61 fixed to the mounting base 4 .
  • Drive arm 64 is fixed to the shaft of a motor 63 fixed to the motor base 61 , and the drive arm 64 is connected at its free end to the other end of the pivot lever 62 via a connecting member 65 .
  • Limiting members 66 for defining limits of a slidable range of the sequin feed units 20 and 21 are provided on the first rod 47 at left and right sides of the left slide member 46 . As shown in FIG. 11 , when the left slide member 46 is in a slide position where it abuts against the right limiting member 66 via a shock-absorbing member 67 , it means that the first sequin feed unit 20 has been selected and positioned in the predetermined sewing operation position. FIG. 8 also shows the state of the apparatus when the first sequin feed unit 20 is selected.
  • the sewing hole Sa of a sequin S to be fed out by the second sequin feed unit 21 is positioned in vertical alignment with the needle drop position (i.e., position of the needle passing hole 71 of) of the needle plate 70 .
  • the needle drop position i.e., position of the needle passing hole 71 of
  • any one of the units 20 and 21 can be selectively positioned in the predetermined sewing operation position. Then, sequin sewing is performed using the selected sequin feed unit 20 or 21 , as will be later described.
  • any one of the two sequin feed units 20 and 21 may be selectively positioned in the predetermined sewing operation position by selectively moving the one sequin feed unit 20 or 21 instead of causing the two sequin feed units 20 and 21 to slide together.
  • the sliding movement for selecting the sequin feed unit 20 or 21 in order to change the sequin to be sewn to from one type to another in the middle of a series of sequin pattern sewing operations is performed by the sequin selection mechanism ( 44 - 50 , 60 - 67 and the like) while the needle bar 39 is in a raised or upper position.
  • the sequin selection mechanism 44 - 50 , 60 - 67 and the like
  • the needle bar 39 is in a raised or upper position.
  • a pivot shaft 52 is pivotably supported on the bearing member 51 mounted on the mounting base 4 , and a driven lever 53 and the transmission lever 54 are fixed to the pivot shaft 52 .
  • the transmission lever 54 has, in its free end, an engagement portion 54 a in the form of a U-shaped recess that engages with the link pin 26 of the link arm 25 of each of the sequin feed units 20 and 21 .
  • the engagement portion 54 a in the form of a U-shaped recess allows the link pin 26 of each of the sequin feed units 20 and 21 to move horizontally relative to the engagement portion 54 a , so that only the link arm 26 of the selected one sequin feed unit 20 or 21 engages with the engagement portion 54 a .
  • Each of the link pins 26 may have a slanted distal end surface to permit smooth engagement with the engagement portion 54 a . Note that such a slanted surface may be formed on the engagement portion 54 a of the transmission lever 54 rather than on each of the link pins 26 , or on both the link pins 26 and the engagement portion 54 a.
  • the driven lever 53 has its free end portion connected to a free end portion of a driving lever 56 via a connecting link 55 , and the driving lever 56 is fixed to the shaft of a motor 57 secured to the left side surface of the mounting base 4 .
  • Torsion spring 58 is provided on the pivot shaft 52 , which normally urges the driven lever 53 and transmission lever 54 in the clockwise direction of FIG. 9 so that an abutting piece 56 a of the driving lever 56 normally abuts against a stopper 59 .
  • the motor 57 performs one reciprocative stroke driving; that is, the motor 57 is caused to pivot through a predetermined angle in the counterclockwise direction of FIG. 9 and then rotated back (returned) through a predetermined angle in the clockwise direction.
  • the driving lever 56 in response to counterclockwise rotational driving (i.e., forward driving operation) of the motor 57 , the driving lever 56 is caused to pivot through a predetermined angle in the counterclockwise direction so that a connection between the lower end of the connecting link 55 and the free end of the driven lever 53 is caused to pivot downward through a predetermined angle in the counterclockwise direction.
  • the pivot shaft 52 is caused to pivot through a predetermined angle in the counterclockwise direction, so that the engagement portion 54 a at the lower end of the transmission lever 54 is driven rearwardly (rightward or counterclockwise in FIG. 9 ).
  • the link pin 26 of the sequin feed mechanism 19 of one of the sequin feed units 20 or 21 moves rearward together with the engagement portion 54 a .
  • the link arm 25 and pivot lever 27 are caused to pivot about the shaft 24 in the counterclockwise direction of FIG. 9 in response to the movement of the link pin 26 , so that the feed lever 29 supported at the free end (lower end) of the pivot lever 27 is moved forward (leftward in FIG. 9 ).
  • each of the relevant components is moved in a direction opposite the aforementioned, so that the feed lever 29 supported at the free end (lower end) of the pivot lever 27 is moved forward (rightward in FIG. 9 , i.e. toward the predetermined cutting position).
  • One stroke length of the feed lever 29 in the forward or rearward movement generally corresponds to a one-pitch feed amount of the continuous sequin strip 13 .
  • the sequin feeding operation is carried out upon completion of sewing of the leading sequin S (and cutting of the continuous sequin strip across the connecting portion Sb immediately following the leading sequin S) shown in FIG. 10 .
  • the engaging portion 29 a at the distal end of the feed lever 29 has engaged with the sewing hole of the next sequin S 1
  • the engaging claw 33 a of the lock lever 33 has engaged with the sewing hole of some subsequent (e.g., second sequin) of the next sequin S 1 .
  • the lock lever 33 pivots in the clockwise direction of FIG. 9 against the biasing force of the torsion spring through engagement with the edge of the through-hole 29 b of the feed lever 29 , so that the engaging claw 33 a of the lock lever 33 moves upward away from the sequin out of the engagement with the sewing hole of the sequin.
  • the engaging portion 29 a of the feed lever 29 is positioned a little ahead (leftward in FIG. 9 or 10 ) of the sewing hole of another sequin immediately following the sequin S 1 (namely, the engaging portion 29 a has not yet engaged with the sewing hole of the immediately-following sequin), and the lock lever 33 is still located over the sequin strip.
  • the engaging portion 29 a of the feed lever 29 engages with the sewing hole of the sequin immediately following the sequin S 1 .
  • the feed lever 29 feeds the continuous sequin strip 13 toward the predetermined cutting position (i.e., rightward in FIG. 9 or 10 ).
  • the edge of the through-hole 29 b of the feed lever 29 gets out of the engagement with the lock lever 33 during the rearward movement of the feed lever 29 , so that the lock lever 33 is caused to pivot in the counterclockwise direction by the resiliency of the torsion spring fitted on the pin 35 .
  • the engaging claw 33 a of the lock lever 33 resiliently contacts the upper surface of the sequin strip 13 and slides along the strip's upper surface relative thereto.
  • the current leading sequin S 1 reaches the predetermined cutting position (i.e., sewing position) in a similar manner to the leading sequin S shown in FIG. 10 .
  • the engaging claw 33 a of the lock lever 33 engages with the sewing hole of a predetermined sequin of the sequin strip 13 in the manner as note above.
  • FIG. 14 is a side view of the supporting plate 22 of one of the sequin feed units 20 or 21 taken from a side opposite the side where the sequin feed mechanism 19 is provided. As shown in FIG. 14 , the supporting plate 22 is secured to a fixed bracket 44 via screws 68 passed through an elongated hole 44 a formed in the fixed bracket 44 .
  • Adjustment screw (or bolt) 69 having a distal end portion screwed to a threaded hole formed in the supporting plate 22 , is provided on the fixed bracket 44 in such a manner that it is rotatable about its axis but can not move in an axial direction thereof.
  • the screw 68 fixing the supporting plate 22 and rotating the adjustment screw 69 clockwise or counterclockwise, the supporting plate 22 is moved linearly forward or rearward relative to the fixed bracket 44 so that its position in the front-rear direction can be adjusted.
  • the screw 68 is tightened to fix the supporting plate 22 to the fixed bracket 44 .
  • the cutting position of the sequin feed unit 21 may be adjusted by measuring a distance from the center of the sewing needle 77 to the fixed cutter blade 23 b on the basis of data indicative of the distance from the sewing hole Sa to the fixed cutter blade 23 b and adjusting the measured distance to equal the distance indicated by the data.
  • such adjustment based on the measured distance data and copying adjustment may be used in combination.
  • a suitable scale may be provided in relation to the adjustment screw 69 so that correspondency between the current setting of the adjustment screw 69 and the cutting position (or distance from the center of the sewing needle 77 to the fixed cutter blade 23 b ) can be grasped on the basis of the scale.
  • the adjustment mechanism is not limited to one using the adjustment screw 69 as set forth above and may be one using another linear displacement mechanism.
  • the adjustment screw 69 may be omitted, in which case the supporting plate 22 may be adjusted in its front-rear position by the human operator holding and moving the supporting plate 22 with his or her hand with the supporting-plate adjusting screw 68 loosened in advance.
  • the cutting position may be variably adjusted by automatically linearly displacing the corresponding sequin feed unit 20 or 21 using a drive means, such as a linear motor.
  • the mechanism for adjusting the cutting position of the other sequin feed unit 20 is constructed in the same manner as the aforementioned cutting-position adjusting mechanism of the sequin feed unit 21 .
  • the cutting position i.e. position of the cutter section ( 36 and 23 b ) relative to the sewing needle 77 , of each of the sequin feed units 20 and 21 can be adjusted independently of the cutting position of the other sequin feed unit.
  • each of the sequin feed units 20 and 21 is slidable in the left-right horizontal direction integrally with the fixed bracket 44 in response to the movement of the above-mentioned slide plate 45 , the cutting positions of the sequin feed units 20 and 21 can be adjusted independently of each other because the feed units 20 and 21 are independently adjustable in position in the front-rear direction relative to the fixed bracket 44 .
  • the respective cutting positions of the sequin fced units 20 and 21 are adjusted in accordance with the sequin sizes (i.e., distances from the sewing hole Sa to the connecting portion Sb) of continuous sequin strips set on the units 20 and 21 , and if the sequin sizes are different from each other, the position, in the front-rear direction, of the support plate 23 , i.e. the position of the cutter section ( 36 and 23 b ), will differ between the units 20 and 21 .
  • the sequin feed amount (feed pitch) of the sequin feed mechanism 19 in each of the sequin feed units 20 and 21 is first adjusted in the following manner. First, the screw 28 (see FIG. 9 ) fixing the pivot lever 27 is loosened to allow the human operator to readily rotate the pivot lever 27 with a hand relative to the pivot shaft 24 .
  • pivot lever 27 and feed lever 29 are caused to follow the “one-pitch-feed-out completed position”. Then, the nut of the stopper 31 is again tightened for locking the stopper 31 , and the screw 28 is tightened to fix the pivot lever 27 relative to the pivot shaft 24 .
  • Such data indicative of a rotational range of the motor 57 may be set by human operator's manual setting operation on an operation panel 90 ( FIG. 1 ) of the sewing machine, or may be incorporated in advance in embroidery sewing data as sequin-feed-amount setting data. Needless to say, data setting for setting a one-pitch feed amount is performed independently for each of the sequin feed units 20 and 21 .
  • the driving by the motor 57 is controlled in accordance with a feeding driving amount (rotational range) set for the feed unit 20 , but, when the motor 57 should perform sequin feeding driving for the second sequin feed unit 21 , the driving by the motor 57 is controlled in accordance with a feeding driving amount (rotational range) set for the feed unit 21 .
  • the feeding may be performed using, as one feed pitch, the size (i.e., diameter) of a sequin to be fed out; in practice, however, a value slightly greater than the sequin size (i.e., diameter) is set as a one-pitch feed amount of the feed lever 29 , in order to allow feed-out of the sequin strip 13 to be effected with an increased reliability.
  • the one-pitch feed amount is set at about 7 mm, or in the case of a sequin having a 4 mm diameter, the one-pitch feed amount is set at about 5 mm.
  • the engaging portion 29 a of the feed lever 29 is positioned a little ahead (leftward in FIG. 9 or 10 ) of the sewing hole of another sequin immediately following the leading sequin S 1 (namely, the engaging portion 29 a has not yet engaged with the sewing hole of the immediately-following sequin) at the end of the forward stroke.
  • the engaging portion 29 a of the feed lever 29 enters and engages with the sewing hole of the sequin immediately following the leading sequin S 1 , so that the continuous sequin strip 13 can be fed toward the cutting position.
  • the one-pitch feed amount of the feed lever 29 may be set at the same value as the sequin size (diameter) in principle, in which case, however, the engaging portion 29 a of the feed lever 29 might stop short of the sewing hole of the sequin immediately following the leading sequin S 1 , instead of entering the sewing hole of the immediately-following sequin, due to an error at the end of the forward stroke of the feed lever 29 .
  • the engaging portion 29 a of the feed lever 29 does not engage with the sewing hole of the sequin, so that the feed lever 29 will not perform feeding of the continuous sequin strip 13 .
  • each of the sequin feed units 20 and 21 is capable of setting/changing its sequin feed pitch as desired, and thus, the “two different types of sequins” may differ in any of not only shape and color but also size (diameter).
  • sequin feeder apparatus 1 can sew sequins of any desired size (diameter), i.e. any desired feed pitch, in accordance with a desired sequin sewing design.
  • sewing control to be described below is implemented by a not-shown control device (e.g., computer) executing a sewing control program, containing a sequence of operations to be explained below, on the basis of desired sequin-design sewing pattern data related to two-sequin-combined embroidery.
  • a flow chart of the sewing-controlling operational sequence is not shown here, such a flow chart may be readily realized on the basis of the following description of the sewing-controlling operational sequence.
  • two reels 14 holding, i.e. having wound thereon, continuous sequin strips 13 differing in sequin shape, color and/or size are prepared in accordance with a two-type-sequin-combined embroidering design and then set on the base 3 side by side in correspondence with the two sequin feed units 20 and 21
  • Portions of the sequin strips 13 are paid out from the two reels 14 , then directed to and supported on the first rollers 15 , tension rollers 10 , second rollers 16 , third rollers 17 and fourth rollers 18 in the mentioned order and then guided to the feed units 20 and 21 .
  • the operation of the sewing machine is started, upon which sequin embroidery sewing is carried out under the control of the control device and on the basis of desired sequin-pattern sewing pattern data using a combination of at least two types of sequins.
  • the desired sequin sewing pattern data are embroidery sewing data of a format programmed to realize a desired sewing pattern and include data for driving the embroidery frame along the X and Y axes in accordance with the desired sewing pattern.
  • the sewing pattern data also include data for selecting sequins to be used for sewing in correspondence with an initial stitch and groups of desired one or a plurality of stitches.
  • the leading sequin S of the thus-fed continuous sequin strip 13 is sewn onto a fabric, held taut on the embroidery frame 80 , by means of the sewing needle 77 , and the movable cutter blade 36 is driven downward by the needle clamp 40 of the needle bar 39 lowered simultaneously with the sewing needle 77 .
  • the leading sequin S thus sewn is cut off from the sequin strip 13 .
  • sequins fed by the first sequin feed unit 20 can be sewn to the fabric.
  • sequin-changing slide and sequin feed-out operations may be performed while the needle bar 39 is in its raised position during one up-down movement cycle, the sequin-changing slide operation is performed first, and then the one-reciprocative-stroke driving for sequin feed-out is performed by the motor 57 .
  • sequins fed by the second sequin feed unit 21 can be sewn to the fabric.
  • the sequin feed unit to be used for the sewing can be changed or switched to the other as needed.
  • the present invention is not limited to the case where the embroidery sewing data include sequin-selecting (changing) data only in correspondence with a stitch at which a sequin change is to be effected as noted above; the embroidery sewing data may include sequin-selecting (changing) data per stitch.
  • the sequin-changing slide control may be automatically performed on the basis of a predetermined sequin changing pattern or may be manually performed as necessary in response to operation, by the human operator, of the operation panel 90 , instead of being performed on the basis of embroidery sewing data as set forth above.
  • the “predetermined sequin changing pattern” may be one in accordance with which a predetermined number n of sequins of the first sequin feed unit 20 are sewn in succession and then a predetermined number m of sequins of the second sequin feed unit 21 are sewn in succession; thus, the sequin to be sewn can be changed from one type to another through repletion of the pattern.
  • the “n” and “m” values may be manually set/changed as desired by the human operator operating the operation panel 90 .
  • a plurality of different sequin changing patterns may be prepared in advance so that the human operator can select, as necessary, any desired one of the sequin changing patterns by operating the operation panel 90 .
  • the two sequin feed units 20 and 21 symmetrically arranged and substantially identically constructed are provided in opposed relation to each other.
  • such identically-constructed sequin feed units 20 and 21 may be provided side by side in a same orientation.
  • the shape of the link arm 25 , fixing the link pin 26 is modified so that the link arm 25 can move without interfering with the transmission lever 54 during the sliding movement of the feed units 20 and 21 .
  • three or more sequin feed units, rather than the two sequin feed units 20 and 21 can be provided side by side in such a manner that any desired one of the feed units can be selected through the sliding movement.
  • switching can be made among three or more types of sequins
  • the first embodiment has been described above as constructed to adjust the cutting position of each of the sequin feed units 20 and 21 through positional adjustment of the supporting plate 22 (i.e., the whole of the sequin feed unit in question).
  • the support plate 23 may be made adjustable in position relative to the supporting plate 22 so that desired adjustment of the cutting position can be performed through positional adjustment of the support plate 23 alone.
  • the mechanism for linearly displacing the support plate 23 may employ a rotation-to-linear-displacement conversion mechanism, such as the above-mentioned adjustment screw 69 , linear motor, or the like.
  • FIG. 16 is a right side view of the sequin feeder apparatus 100 , which is provided with a detection device 101 for detecting that the entirety of a continuous sequin strip 13 has been supplied from the reel 14 .
  • the detection device 101 is provided for detecting whether the supply from any of the supply sources (reels) 14 to the respective sequin feed units 20 and 21 has stopped.
  • the sequin feeder apparatus 100 according to the second embodiment is slightly different, in installed position of the rollers for guiding the sequins strips 13 paid out from the reels 14 , from the sequin feeder apparatus 1 because of the provision of the detection device 101 , but, the two embodiments are identical to each other in the other structural features.
  • FIGS. 17-20 are views showing in enlarged scale an example construction of the detection device 101 . More specifically, FIG. 17 is a side view of the detection device 101 , FIG. 18 is a view taken in a direction of arrow A of FIG. 17 , and FIG. 19 is a sectional view taken along the B-B line of FIG. 17 .
  • Mounting bracket 102 of the detection device 101 includes a mounting section 102 a mounted on the fixed base 3 , and a first base plate 102 b bent at a right angle from the mounting section 102 a . As shown in FIG.
  • the first base plate 102 b has a projection 103 of an inverted T shape formed integrally with the lower edge thereof, and guiding portions 103 a and 103 b for guiding the respective continuous sequin strips 13 extend leftward and rightward from the projection 103 .
  • Second base plate 104 having a similar shape to the first base plate 102 b , is secured, by means of a stud 105 , to the mounting bracket 102 in parallel with the first base plate 102 b .
  • the second base plate 104 has guiding portions 104 a and 104 b similar to the guiding portions 103 a and 103 b of the first base plate 102 b .
  • the right and left levers 106 and 107 has respective arms 106 a and 107 a capable of abutting against the corresponding continuous sequin strips 13 supported by the preceding and succeeding (i.e., upper and lower) guiding portions 103 a , 104 a and 103 b , 104 b , and detecting portions (made of metal) 106 b and 107 b extending from the right and left levers 106 and 107 , respectively.
  • Knobs 108 are provided at the respective ends of the levers 106 and 107 .
  • Each of the right and left levers 106 and 107 functions as a displacement member displaceable between first and second positions.
  • the “first position” is where the displacement member (lever 106 or 107 ) is held in abutting contact with the corresponding continuous sequin strip 13
  • the “second position” is where the displacement member (lever 106 or 107 ) is located past the first position, without abutting against the corresponding continuous sequin strip 13 , due to a stoppage (i.e., runout) of the supply of the continuous sequin strip 13 .
  • FIG. 18 shows where the two continuous sequin strips 13 supported by pairs of the preceding and succeeding guiding portions 103 a , 104 a and 103 b , 104 b .
  • the arms 106 a and 107 a of the right and left levers 106 and 107 having pivoted downward by the weights of the respective knobs 108 , are in abutting contact with the corresponding continuous sequin strips 13 from above; hardly, the right and left levers 106 and 107 are each held in the first position.
  • the right lever 106 pivots in the clockwise direction by the weight of the knob 108 to pass between the guiding portions 103 a and 104 a , so that the lever 106 takes a posture where the corresponding knob 108 is oriented vertically; namely, the lever 106 takes the second position.
  • Magnetic sensor 109 is provided on the upper surface of the second base plate 104 and on pivoting trajectories of the detecting portions 106 b and 107 b , and a permanent magnet 110 is provided on the lower surface of the first base plate 102 b .
  • the magnetic sensor 109 is kept in an ON state. But, as the right lever 106 pivots, from the position of FIG. 18 , in the clockwise direction (i.e., shifts from the first position to the second position) due to a stoppage (runout) of the supply of the right (-side) continuous sequin strip 13 as shown in FIG.
  • the detecting portion 106 b passes transversely between the magnetic sensor 109 and the permanent sensor 110 and thereby temporarily blocks out the magnetism of the permanent magnet, so that the magnetic sensor 109 is shifted to an OFF state. In this way, it is possible to detect that the supply of the continuous sequin strip 13 , so far has been paid out or supplied from the reel 14 , has run out.
  • the detection device 101 in the second embodiment operates as follows at the time of sequin sewing.
  • two reels 14 holding, or having wound thereon, continuous sequin strips 13 differing in shape and/or size are set side by side on the fixed base 4 .
  • Portions of the continuous sequin strips 13 , paid out from the reels 14 are passed to and engaged with the individual rollers and detection device 101 and then directed to the corresponding sequin feed units 20 and 21 .
  • the continuous sequin strips 13 are set on the guiding portions 103 a , 104 a and 103 b , 104 b , respectively.
  • the right lever 106 is held in the first position where the arm 106 a is held horizontally with the right lever 106 supported by the upper surface of the continuous sequin strip 13 that is in turn supported at two points thereof by the preceding and succeeding guiding portions 103 a and 104 a .
  • Left-side continuous sequin strip 13 can be set relative to the left side of the detection device 101 in generally the same manner as the right-side continuous sequin strip 13 .
  • the two levers 106 and 107 are held in the first position as shown in FIG. 18 and the magnetic sensor 109 is kept in the ON state detecting the magnetism of the permanent magnet 110 , as long as there exist the sequin strips 13 on the detection device 101 . Then, once the supply of one of the continuous sequin strips (e.g., right-side continuous sequin strip) 13 runs out and the right-side continuous sequin strip 13 is no longer present at the guiding portions 103 a and 104 a , the right lever 106 pivots downward to the second position shown in FIG. 20 .
  • the continuous sequin strips e.g., right-side continuous sequin strip
  • the detecting portion 106 b of the right lever 106 passes transversely between the magnetic sensor 109 and the permanent magnet 109 , so that the magnetism of the permanent magnet 21 is temporarily blocked out and thus the magnetic sensor 109 is temporarily placed in the OFF state and then returns to the ON state.
  • Output of the magnetic sensor 109 is supplied to a not-shown control device.
  • the control device detects that the output of the magnetic sensor 109 has switched to the OFF state, it determines that the supply of the continuous sequin strip 13 has run out, so that it automatically deactivates the sewing machine and informs, via suitable visible and/or audible means, the human operator that the supply of the continuous sequin strip 13 has run out.
  • the magnetic sensor 109 is kept in the ON state while the lever 106 or 107 is held in the second position.
  • the lever 106 or 107 of the other sequin feed unit where no continuous sequin strip 13 is set, is held in such a manner that the corresponding knob 108 is oriented vertically downward by its own weight alone, the lever 106 or 107 of the other sequin feed unit might undesirably pivot if the embroidery sewing machine vibrates greatly, which tends to result in a false detection.
  • holding members such as leaf springs, may be provided to restrict movement the levers 106 and 107 such that, when any one of the levers 106 or 107 is in the second position (where the knob 108 is oriented vertically downward), the lever 106 or 107 can be reliably prevented from undesirably pivoting due to vibration.
  • biasing members such as torsion springs, for normally urging the levers 106 and 107 to the second position (i.e., position where the knob 108 is oriented vertically downward), in which case it is preferable to provide stoppers for holding the thus-urged levers 106 and 107 in the second position.
  • the detection device 101 only detects that any one of the two continuous sequin strips 13 has run out and does not specifically detect which one of the two continuous sequin strips 13 has run out. This is because the second embodiment can achieve necessary and sufficient functions by automatic deactivation of the sewing machine or information to the human operator based on the mere detection that any one of the two continuous sequin strips 13 has run out.
  • the present invention is not so limited, and two detection devices of the aforementioned construction may be provided, in correspondence with two continuous sequin strips 13 to be set, so as to specifically detect which one of the two continuous sequin strips 13 has run out.
  • the detection device 101 for detecting that a continuous sequin strip 13 has run out is also applicable to sequin feeder apparatus of the conventionally-known type where only one continuous sequin strip is set and fed, instead of being limited to the sequin feeder apparatus 1 of the type where two or more continuous sequin strips 13 are set side by side to permit sequin selection or change as desired.
  • the construction of the detection device 101 shown in FIGS. 17-20 may be used as-is, and the continuous sequin strip 13 only has to be guided by the left- or right-side guiding portions 103 a and 104 a (or 103 b and 104 b ).
  • the construction of the detection device 101 shown in FIGS. 17-20 may be modified; for example, there may be provided only the left- or right-side 103 a and 104 a (or 103 b and 104 b ) and the corresponding lever 106 (or 107 ).
  • the detection device 101 may comprise any suitable detection means, such as an optical sensor or mechanical sensor, rather than a magnetic sensor.
  • spring members for holding the two reels 14 sideways against excessive rotation are provided at positions where the reels 14 are set side by side.
  • some force would act on the two juxtaposed reels 14 such that the reels 14 tend to rotate together; consequently, as one of the reels 14 , which is currently involved in sequin sewing, rotates, the other reel 14 , which is not currently involved in the sequin sewing, may undesirably rotate together with the one reel 14 and slacken to have adverse influences on the sequin sewing.
  • a key groove may be formed in the mounting shaft supporting the reels 14 , and a washer having a key formed, on its inner periphery, for fitting engagement with the key groove may be provided between the two reels 14 .
  • a part of the mounting shaft may be formed into a substantial D sectional shape, and a washer having a hole corresponding in sectional shape to that part may be provided between the two reels 14 . In this way, the two reels 14 can be reliably prevented from rotating together, and, besides, the holding force applied sideways effectively acts on both of the reels 14 .
  • the mounting base 4 may be constructed so that it can also be stopped and held in an intermediate position between the lowered position and the evacuated position.
  • the mounting base 4 is raised from the lowered position to the intermediate position without the sewing machine being deactivated.
  • the modification can reduce the time required for ascending and descending of the mounting base 4 , and, because the sewing machine is not deactivated, it can effectively reduce the loss of the operating time as compared to the case where the switching from the sequin sewing operation to the embroidery operation is effected with by the base 4 held in the lower position.
  • the needle bar may be held in the jumping state, in which case too the loss of the operating time can be considerably reduced.
  • the “intermediate position” of the mounting base 4 may be any suitable position where the movable cutter blade 36 is not hit by the needle bar 40 .
  • the mounting base 4 may be evacuated from the intermediate position to the evacuated position upon deactivation of the sewing machine. Further, the human operator may set individually whether the mounting base 4 should be held in the lowered position or should be raised to the intermediate position or to evacuated position in various predetermined states, such as when the thread is to be cut and when a thread breakage has been detected.
  • a state or position where the right-side sequin feed unit 21 of the two sequin feed units 20 and 21 is in the sewing operation position may be set as a “reference position”; namely, when the sequin sewing operation is not to be performed, the right-side sequin feed unit 21 may be positioned in the sewing operation position.
  • the threading can be performed with ease without being interfered with by the sequin feeder apparatus 1 .
  • a state or position where the left-side sequin feed unit 20 is in the sewing operation position may be set as the “reference position”.
  • each of the sequin feeder apparatus 1 there may be provided a feeding switch operable to instruct an operation for feeding a continuous sequin strip 13 , a switching switch operable to instruct that the sequin feed unit to be used for feeding the continuous sequin strip 13 be changed or switched over to the left or right sequin feed unit 20 or 21 , an ascending/descending switch operable to instruct that the sequin feeder apparatus 1 be caused to ascend or descend, and other switches, so that any desired operation can be instructed by the human operator manually operating a corresponding one of the switches.
  • a feeding switch operable to instruct an operation for feeding a continuous sequin strip 13
  • a switching switch operable to instruct that the sequin feed unit to be used for feeding the continuous sequin strip 13 be changed or switched over to the left or right sequin feed unit 20 or 21
  • an ascending/descending switch operable to instruct that the sequin feeder apparatus 1 be caused to ascend or descend
  • other switches so that any desired operation can be instructed by the human operator manually operating a corresponding one of the
  • embroidery sewing data corresponding to several stitches may be pre-read so that sequin changing (switching) can be effected at a stitch preceding the sewing of the several stitches. More specifically, once a particular stitch at which a sequin change is to be effected is identified through pre-reading of the embroidery sewing data, a determination is made as to whether or not the sequin change is possible at a stitch preceding the particular stitch. If the preceding stitch is a stitch at which a sequin is not to be fed out, then it is determined that the sequin change is possible at the preceding stitch.
  • the preceding stitch is a stitch at which a sequin is to be fed out
  • the sequin change is impossible at the preceding stitch
  • jump stitch data is inserted for jumping the needle bar between needle stitches so that a sequin change can be effected during the jumping of the needle bar.
  • sequin patterns shown in FIGS. 21 and 22 are to be sewn.
  • the sequin patterns shown in FIGS. 21 and 22 each comprise a pattern to be made by alternately sewing sequins of different sizes, and let it be assumed here that, of the sequin patterns, the large-size sequins A are sewn via the sequin feed unit 21 while the small-size sequins B are sewn via the other sequin feed unit 20 .
  • FIGS. 21 and 22 each comprise a pattern to be made by alternately sewing sequins of different sizes
  • P 1 represents a first “sewing stitch” formed by a first “needle stitch”
  • P 2 a second sewing stitch formed by a second needle stitch
  • P 3 a third sewing stitch formed by a third needle stitch
  • P 4 a fourth sewing stitch by a fourth needle stitch, and so on.
  • the sequin pattern shown in FIG. 21 there are provided, between the large-size sequins A and the small-size sequins B, “no sequin” stitches where no sequin is sewn, while, in the sequin pattern shown in FIG. 22 , the different-size sequins A and B are sewn successively stitch by stitch, i.e. with no “no-sequin stitch”.
  • the control device e.g., computer
  • the sequin feed unit 21 is positioned in the sewing operation position in correspondence with the first large-size sequin A to be first sewn to a workpiece, and then the first sewing stitch P 1 corresponding to the first needle stitch is formed with no sequin sewn. Then, the sequin A is fed out via the sequin feed unit 21 and sewn to the workpiece by the second sewing stitch P 2 .
  • sewing of the first small-size sequin B at the fourth needle stitch is identified by pre-reading of embroidery sewing data, and a determination is made as to whether or not a sequin change is possible at the third needle stitch preceding the fourth needle stitch. Because the third needle stitch is where no sequin is to be fed out, it is determined that the sequin change is possible at the third needle stitch. Thus, the control device decides to effect the sequin change at the third needle stitch, on the basis of which the sequin feed unit 20 is positioned in the sewing operation position in correspondence with the small-size sequin B to be next sewn.
  • the third sewing stitch is formed with no sequin sewn, at which time the sequin feed unit to be positioned in the sewing operation position is switched while the needle bar is raised between the second and third needle stitches.
  • the small-size sequin B is fed out via the sequin feed unit 20 , currently positioned in the sewing operation position, and sewn to the workpiece by the fourth sewing stitch P 4 .
  • the sequin feed unit 21 corresponding to the second large-size sequin A is positioned in the sewing operation position, and thence the fifth sewing stitch P 5 is formed with no sequin sewn. After that, the aforementioned operations are repeated, so that the sequin pattern shown in FIG. 21 is sewn to the workpiece.
  • the control device e.g., computer
  • the sequin feed unit 21 is positioned in the sewing operation position in correspondence with the first large-size sequin A to be first sewn to a workpiece, and then the first sewing stitch P 1 corresponding to the first needle stitch is formed.
  • the sequin A is fed out via the sequin feed unit 21 and sewn to the workpiece by the second sewing stitch P 2 .
  • sewing of the first small-size sequin B at the third needle stitch is identified by pre-reading of embroidery sewing data, and a determination is made as to whether or not a sequin change is possible at the second needle stitch preceding the third needle stitch.
  • the second needle stitch is where the large-size sequin A is to be sewn, it is determined that the sequin change is impossible at the second needle stitch, jump stitch data is inserted for jumping the needle bar between the second and third needle stitches.
  • the needle bar is jumped with a jump stitch, and the sequin feed unit 20 is positioned in the sewing operation position in correspondence with the small-size sequin B to be next sewn.
  • the small-size sequin B is fed out via the sequin feed unit 20 and sewn to the workpiece by the third sewing stitch P 3 corresponding to the third needle stitch.
  • a change or switch from a sequin of one type to a sequin of the other type and feeding of the sequin of the other type may be performed at different stitches, by effecting the sequin change at a stitch preceding the stitch at which the sequin is to be sewn.
  • the upper thread T may enter the cutter section ( 36 , 23 b ) of the sequin feed unit 20 . If the upper thread T has entered the cutter section ( 36 , 23 b ), not only the sewing is adversely influenced, but also the upper thread T is undesirably cut by the cutter section ( 36 , 23 b ) during sewing of a sequin.
  • a further determination may be made as to whether a sequin change is possible at a further preceding stitch that precedes the aforementioned preceding stitch. If the further preceding stitch is a stitch at which no sequin is to be fed out, and if the embroidery frame 80 is to be moved rearward, the desired sequin change is effected at the further preceding stitch. If, on the other hand, no sequin change is impossible at the further preceding stitch too, thenjump stitch data is inserted.
  • the sequin feed units 20 and 21 may each be provided with a guide member for guiding the upper thread T so as not to enter the cutter section ( 36 , 23 b ). Furthermore, by pre-reading the embroidery sewing data, the sewing speed of the sewing machine may start to be lowered several stitches before a stitch at which a sequin change is to be effected; the sewing speed may be returned to a normal speed when no sequin change is to be effected between given stitches.
  • Sequin pattern comprising a heretofore-unachievable, novel pattern structure, can be created by using the sequin feeder apparatus 1 of the present invention to sew two sequins C and D of different types to a workpiece in an overlapped relation to each other as shown in FIG. 24 .
  • the control device e.g., computer
  • one of the sequin feed units 20 or 21 to be used for sewing of the sequin C to a workpiece is positioned in the sewing operation position, and then a first sewing stitch P 1 corresponding to a first needle stitch shown in (a) of FIG. 25 is formed.
  • the sequin C is fed out and sewn to the workpiece by a second sewing stitch P 2 corresponding to a second needle stitch.
  • the other sequin feed units 21 or 20 to be used for sewing of the sequin D to the workpiece is positioned in the sewing operation position, and then a third sewing stitch P 3 corresponding to a third needle stitch is formed.
  • the sequin C is fed out and sewn to the workpiece by a fourth sewing stitch P 4 corresponding to a fourth needle stitch.
  • sewing stitches P 5 , P 6 and P 7 corresponding to fifth, sixth and seventh needle stitches are sequentially formed as shown in (c) of FIG. 25 .
  • the sequin feed unit 20 or 21 to be used for sewing of the next sequin C to the workpiece is positioned in the sewing operation position, and the next sequin C is sewn to the workpiece by an eighth sewing stitch corresponding to an eighth needle stitch.
  • the aforementioned operations at the third to eighth needle stitches are repeated, so that the sequin pattern shown in FIG. 24 is sewn to the workpiece.
  • FIG. 26 is an exploded rear perspective view of a sequin feeder apparatus 120 in accordance with another embodiment of the present invention.
  • FIG. 26 shows in enlarged scale parts of a feeding drive mechanism 121 , sequin selection mechanism 122 , left-side sequin feed unit 123 and right-side sequin feed unit 124 .
  • each of the sequin feed units 123 and 124 includes an adjustment mechanism for variably adjusting a cutting position (position relative to a sewing needle 77 ) in the feed unit 123 or 124 .
  • the sequin feeder apparatus 120 is constructed in such a manner that, in each of the sequin feed units 123 and 124 , the cutting position, adjusted in each of the sequin feed units 123 and 124 in accordance with a sequin size of a continuous sequin strip set on the unit, can be maintained even after detachment of the feed unit from the apparatus 120 , and that the sequin feed units 123 and 124 can be accurately attached to the feeder apparatus 120 by being fixedly positioned at respective predetermined positions.
  • the sequin selection mechanism 122 For mounting of the sequin feed units 123 and 124 , the sequin selection mechanism 122 includes base members 125 on its left and right sides. Each of the sequin feed units 123 and 124 includes a mounting bracket 126 having a mounting groove 126 a and hole 126 b .
  • Each of the sequin feed units 123 and 124 can be detachably fixed to the corresponding bracket 125 by means of two stepped screws 132 , and the height of the groove 126 a and diameter of the hole 126 b of the mounting bracket 126 are appropriately chosen such that shaft portions 132 a of the stepped screws 132 can be fitted in the groove 126 a and hole 126 b with no wobbling or backlash. In this way, the mounting brackets 126 can always be positioned in same positions relative to the corresponding base members 125 .
  • the mounting bracket 126 is fixed to a corresponding supporting plate 127 by means of two fastening screws 128 .
  • the mounting bracket 126 includes a mounting section for each of the fastening screws 128 , which has a stepped shape having a through-hole for passage therethrough a threaded portion of the fastening screw 128 and an increased-diameter portion for fitting engagement therein of a head portion of the fastening screw 128 .
  • the through-hole and increased-diameter portion of the mounting section together constitute an elongated hole extending in the front-rear direction of the sequin feeder apparatus.
  • each of the mounting brackets 126 has a guide hole 126 c extending in the front-rear direction of the sequin feeder apparatus so that one of guide pins 129 fixed to the supporting plate 127 can be slidably fitted therein.
  • an adjustment screw 130 is supported by a support section 126 d, bent at a right angle from the body of the bracket 126 , in such a manner that the screw 130 is rotatable about its axis but immovable in the axial direction thereof, and the adjustment screw 130 has a distal end portion screwed into a threaded hole of a support member 131 that is in turn fixed to the supporting plate 127 .
  • the support member 131 having the threaded hole and the supporting plate 127 are linearly displaced without the adjustment screw 130 being linearly displaced.
  • the supporting plate 127 is linearly displaced in the forward or rearward direction so that its position in the front-rear direction can be adjusted.
  • the sequin feed unit 123 or 124 When some adjustment has to be made for at least one of the sequin feed unit 123 and 124 in the sequin feeder apparatus 120 in accordance with the size of sequins to be sewn, the sequin feed unit 123 or 124 , requiring the adjustment, is detached from the body of the sequin feeder apparatus 120 , and the sequin feed amount (i.e., positional adjustment of the pivot lever and lock lever) of the detached sequin feed unit 123 or 124 is adjusted.
  • the sequin feed amount i.e., positional adjustment of the pivot lever and lock lever
  • the sequin feed unit 123 or 124 is re-attached to the body of the sequin feeder apparatus 120 , and then the cutting position (position relative to a sewing needle 77 ) is adjusted by rotating the adjustment screw 130 clockwise or counterclockwise to move the supporting plate 127 in the front-rear direction. Then, the rotational range of the sequin-feeding drive motor is set, as necessary, to a value corresponding to a one-pitch sequin feed amount. Namely, the desired adjustment can be made with ease by detaching the sequin feed unit 123 or 124 , requiring the adjustment, from the body of the sequin feeder apparatus 120 as noted above.
  • each of the mounting brackets 126 can always be positioned in the same position relative to the corresponding base members 125 , the cutting position in the sequin feed unit 123 or 124 will not vary even though the feed unit 123 or 124 is detached and attached after the supporting plate 127 is positioned in position according to the sequin size. Therefore, if some scale means indicative of adjusted positions of the supporting plate 127 corresponding to various sequin sizes is provided, and if arrangements are made for permitting the cutting position adjustment while the feed unit 123 or 124 is detached from the body of the sequin feeder apparatus 120 , the desired adjustment can be made with ease.
  • such arrangements permit novel usage of the sequin feeder apparatus, in accordance with which sequin feed units adjusted according to various sequin sizes are prepared in advance and switching is made to one of such prepared sequin feed units, which corresponds to the size of a sequin to be used, without making various adjustments in accordance with the size of the sequin to be used.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US11/870,703 2006-10-13 2007-10-11 Sequin feeder apparatus and sewing machine capable of sewing sequins Abandoned US20080087206A1 (en)

Applications Claiming Priority (4)

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JP2006-280396 2006-10-13
JP2006280396 2006-10-13
JP2007-244083 2007-09-20
JP2007244083A JP5091601B2 (ja) 2006-10-13 2007-09-20 シークイン送り装置及びシークイン縫いが可能なミシン

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JP (1) JP5091601B2 (el)
KR (1) KR100925588B1 (el)
CN (1) CN101161900B (el)
BR (1) BRPI0801112A2 (el)
DE (1) DE102007048344A1 (el)
GR (1) GR20080100114A (el)
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US20100207945A1 (en) * 2009-02-14 2010-08-19 Kirsch Jeremy A Template for creating sequin-based designs & methods of use thereof
CH700560A1 (de) * 2009-03-10 2010-09-15 Laesser Ag Vorrichtung für Stick-, Stepp- und Kleinstickmaschinen zum Bereithalten von anzustickenden Teilen.
US20110192332A1 (en) * 2010-02-08 2011-08-11 Tokai Kogyo Mishin Kabushiki Kaisha Sequin feeder apparatus
US20130054000A1 (en) * 2011-08-26 2013-02-28 Ioannis Doukakis Attachment for embroidery and sewing machines for creating crystal/rhinestone patterns and motifs, and software functions to control the attachment
US20140109815A1 (en) * 2012-10-19 2014-04-24 Brother Kogyo Kabushiki Kaisha Sewing machine, apparatus, and non-transitory computer-readable medium storing computer-readable instructions
US9074309B1 (en) * 2014-02-18 2015-07-07 Abm International, Inc. Method, apparatus and computer-readable medium for sequin attachment
US10619296B2 (en) 2017-01-06 2020-04-14 Under Armour, Inc. Articles with embroidered sequins and methods of making
CN113445224A (zh) * 2021-07-07 2021-09-28 温州欧罗华实业有限公司 一种单色排珠机构及具有该机构的绣花机

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KR100973558B1 (ko) * 2007-08-08 2010-08-03 썬스타 특수정밀 주식회사 자수기의 세퀸 공급장치
JP5184992B2 (ja) * 2008-06-26 2013-04-17 株式会社バルダン シークイン供給装置
KR101049154B1 (ko) * 2008-08-07 2011-07-14 썬스타 특수정밀 주식회사 세퀸 봉제장치의 세퀸릴 고정장치
CH700377A1 (de) * 2009-02-11 2010-08-13 Bernina Int Ag Haltevorrichtung für ein Werkzeug zur Bearbeitung eines textilen oder nicht textilen Flächengebildes bei einer Nähmaschine.
CN102560925B (zh) * 2010-12-15 2014-03-26 北京大豪科技股份有限公司 刺绣系统的控制方法
CN102978847B (zh) * 2012-12-20 2014-12-03 温州欧罗华实业有限公司 多金片刺绣装置及包含该多金片刺绣装置的绣花机
JP5997089B2 (ja) * 2013-03-29 2016-09-28 株式会社バルダン シークイン供給装置
CN105795568B (zh) * 2016-05-09 2017-07-28 广东溢达纺织有限公司 前幅自动加工系统及前幅自动加工方法
JP7079918B2 (ja) * 2017-08-25 2022-06-03 株式会社ジャノメ ミシンの早見パネル装置
CN111575933B (zh) * 2020-05-20 2023-08-15 浙江信胜科技股份有限公司 方便换色的送片驱动总成及烫片机

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* Cited by examiner, † Cited by third party
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US20100207945A1 (en) * 2009-02-14 2010-08-19 Kirsch Jeremy A Template for creating sequin-based designs & methods of use thereof
CH700560A1 (de) * 2009-03-10 2010-09-15 Laesser Ag Vorrichtung für Stick-, Stepp- und Kleinstickmaschinen zum Bereithalten von anzustickenden Teilen.
US20110192332A1 (en) * 2010-02-08 2011-08-11 Tokai Kogyo Mishin Kabushiki Kaisha Sequin feeder apparatus
US9014837B2 (en) * 2011-08-26 2015-04-21 Ioannis Doukakis Attachment for embroidery and sewing machines for creating crystal/rhinestone patterns and motifs, and software functions to control the attachment
US20130054000A1 (en) * 2011-08-26 2013-02-28 Ioannis Doukakis Attachment for embroidery and sewing machines for creating crystal/rhinestone patterns and motifs, and software functions to control the attachment
US9014838B2 (en) * 2012-10-19 2015-04-21 Brother Kogyo Kabushiki Kaisha Sewing machine, apparatus, and non-transitory computer-readable medium storing computer-readable instructions
US20140109815A1 (en) * 2012-10-19 2014-04-24 Brother Kogyo Kabushiki Kaisha Sewing machine, apparatus, and non-transitory computer-readable medium storing computer-readable instructions
US9074309B1 (en) * 2014-02-18 2015-07-07 Abm International, Inc. Method, apparatus and computer-readable medium for sequin attachment
US10619296B2 (en) 2017-01-06 2020-04-14 Under Armour, Inc. Articles with embroidered sequins and methods of making
US11149382B2 (en) 2017-01-06 2021-10-19 Under Armour, Inc. Articles with embroidered sequins in variable patterns
US11332882B2 (en) 2017-01-06 2022-05-17 Under Armour, Inc. Articles with embroidered sequins and methods of making
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CN113445224A (zh) * 2021-07-07 2021-09-28 温州欧罗华实业有限公司 一种单色排珠机构及具有该机构的绣花机

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JP2008114049A (ja) 2008-05-22
CN101161900A (zh) 2008-04-16
CN101161900B (zh) 2012-03-07
DE102007048344A1 (de) 2008-05-15
KR100925588B1 (ko) 2009-11-06
BRPI0801112A2 (pt) 2009-01-06
JP5091601B2 (ja) 2012-12-05
TR200707023A2 (tr) 2007-12-24
GR20080100114A (el) 2008-09-04
KR20080033885A (ko) 2008-04-17

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