US20070199490A1 - Sewing machine with sequin sewing device - Google Patents

Sewing machine with sequin sewing device Download PDF

Info

Publication number
US20070199490A1
US20070199490A1 US11/678,701 US67870107A US2007199490A1 US 20070199490 A1 US20070199490 A1 US 20070199490A1 US 67870107 A US67870107 A US 67870107A US 2007199490 A1 US2007199490 A1 US 2007199490A1
Authority
US
United States
Prior art keywords
sequin
sewing
needle bar
embroidery
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/678,701
Other languages
English (en)
Inventor
Kenji Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Kogyo Sewing Machine Co Ltd
Original Assignee
Tokai Kogyo Sewing Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokai Kogyo Sewing Machine Co Ltd filed Critical Tokai Kogyo Sewing Machine Co Ltd
Assigned to TOKAI KOGYO MISHIN KABUSHIKI KAISHA reassignment TOKAI KOGYO MISHIN KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUZUKI, KENJI
Publication of US20070199490A1 publication Critical patent/US20070199490A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/02—Machine needles
    • D05C11/06—Needle-driving or control mechanisms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C5/00—Embroidering machines with arrangements for automatic control of a series of individual steps
    • D05C5/04—Embroidering machines with arrangements for automatic control of a series of individual steps by input of recorded information, e.g. on perforated tape
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00—Applied objects or articles
    • D05D2303/12—Rigid objects
    • D05D2303/18—Sequins

Definitions

  • the present invention relates generally to sewing machines equipped with a sequin sewing device for sewing a sequin onto a sewing workpiece, and more particularly an improved sewing machine capable of moving a sequin sewing device between an operative position where the sewing device can sew a sequin and an evacuated position where the sewing device can not sew a sequin.
  • Patent Literature 1 discloses a multi-head embroidery sewing machine equipped with a sequin sewing device and capable of performing sequin sewing and embroidery sewing in combination.
  • the sequin sewing device is provided on the left side surface of a needle bar case having a plurality of needle bars supported therein, and the leftmost one of the needle bars in the needle bar case is used as a sequin-sewing needle bar (hereinafter “sequin needle bar”).
  • the sequin sewing device is vertically movable (i.e., ascendable and descendable) relative to the needle bar case; namely, when a sequin is to be sewn, the sequin sewing device is moved to a lowered position, while, when a sequin is not to be sewn, the sequin sewing device is evacuated upward to a raised position so as not to hinder ordinary embroidery sewing.
  • the sequin sewing device includes a sequin feed mechanism for feeding a strip of a multiplicity of continuously-connected sequins (hereinafter also referred to as “continuous sequin strip”) at a predetermined pitch. More specifically, the continuous sequin strip is played out or let out from a reel and then placed on the upper surface of a support plate, after which the continuous sequin strip is fed out at the predetermined pitch, corresponding to a size of one sequin, through feeding operation of the sequin feed mechanism.
  • a sequin feed mechanism for feeding a strip of a multiplicity of continuously-connected sequins (hereinafter also referred to as “continuous sequin strip”) at a predetermined pitch.
  • the sequin needle bar is moved downward, the movable blade is rotated by abutting against a needle clamp provided at the lower end of the sequin needle bar, to thereby sever the leading sequin from the strip in conjunction with the fixed knife.
  • sequin sewing and embroidery sewing are performed on a sewing workpiece with a same color thread.
  • the disclosed multi-head embroidery sewing machine is arranged to keep the sequin sewing device in the lowered position throughout the successive sewing operations; this is for the purpose of successively perform the sequin sewing and embroidery sewing operations, without the sewing machine being deactivated, to thereby reduce the necessary working time.
  • Patent Literature 1 can reduce the necessary working time by performing ordinary embroidery sewing, which uses with the same colored thread as in sequin sewing, by means of the sequin needle bar with the sequin sewing device kept in the lowered position, the needle clamp would undesirably abut against the sequin needle bar as the sequin needle bar descends because the embroidery sewing with the sequin needle bar is performed with the sequin sewing device kept in the lowered position. Namely, the movable blade would be unnecessarily hit by the needle clamp and thus tends to be broken easily. In addition, the unnecessary abutment between the needle clamp and the movable blade would result in greater noise sound of the sewing machine.
  • the present invention provides an improved sewing machine, which comprises: a machine head including a needle bar mechanism usable for both sequin sewing and ordinary sewing, said needle bar mechanism having a vertically-movable needle bar for sewing; a sequin sewing device provided in correspondence with the needle bar mechanism and movable between an operative position where said sequin sewing device can perform sequin sewing and an evacuated position where said sewing device can not perform sequin sewing; a needle bar control section that, in a first shifting operation for shifting said sequin sewing device from the operative position to the evacuated position or in a second shifting operation for shifting said sequin sewing device from the evacuated position to the operative position, inhibits or delays descending movement of the needle bar of the needle bar mechanism while maintaining said sewing machine in an operating condition; and a movement mechanism that moves said sequin sewing device to the evacuated position in said first shifting operation but moves said sequin sewing device to the operative position in said second shifting operation while said needle bar control section inhibits or delays descending
  • the descending movement of the needle bar of the needle mechanism is inhibited or delayed with the sewing machine maintained in the operating condition (e.g., rotation of a main machine shaft maintained).
  • the needle bar can be held in an upper position away from the operative position, or the time for which the needle bar is held in the upper position, can be increased, without the sewing machine being deactivated, and the sequin sewing device can be safely moved from the operative position to the evacuated position or from the evacuated position to the operative position while the needle bar is held in the upper position.
  • Such arrangements can not only prevent unwanted hitting or abutment between the needle clamp and the movable blade, but also permits the vertical movement of the sequin sewing device and thus achieves a significant reduction of the necessary working time.
  • the needle bar control section is a needle jump mechanism, which inhibits the descending movement of the needle bar by placing the needle bar in a jump state.
  • the needle bar control section is a main machine shaft speed control device (i.e., device for controlling the operating speed of the main machine shaft), which inhibits the descending movement of the needle bar by reducing the operating speed of the main machine shaft.
  • a main machine shaft speed control device i.e., device for controlling the operating speed of the main machine shaft
  • the needle bar control section when an embroidery pattern comprising a mixture of a sequin-sewn portion and an ordinary embroidery portion is to be sewn, not only the needle bar control section is caused to inhibit the descending movement of the needle bar (i.e., jump the needle bar) or delays the descending movement (reduces the operating speed of the main machine shaft), but also the movement mechanism is caused to move the sequin sewing device, in correspondence with an embroidery pattern position where the first shifting operation is to be performed.
  • the movable blade attached to the sequin sewing device located in the evacuated position is no longer hittable by the needle clamp of the vertically-moved needle bar.
  • the movable blade is unnecessarily hit by the needle clamp of the needle bar and thereby prevent the movable blade from being easily broken.
  • no hitting sound is produced between the movable blade and the needle bar, so that the present invention can prevent noise sound, produced by the sequin needle bar during the ordinary embroidery sewing, from becoming great.
  • the present invention can significantly reduce a waste of the working time as compared to the conventional counterpart in which the positional shifting of the sequin sewing device is effected with the sewing machine deactivated.
  • the sewing machine of the present invention further comprises: an embroidery data supply section that supplies embroidery data of an embroidery pattern comprising a mixture of a sequin-sewn portion and an ordinary embroidery portion; and a data generation section that determines, on the basis of supplied embroidery data, an embroidery pattern position where the first shifting operation or the second shifting operation is to be performed and inserts a jump code instructing a needle bar jump (or main-machine-shaft speed reduction instruction instructing reduction of the operating speed of the main machine shaft) into the embroidery data in correspondence with the determined embroidery pattern position.
  • an embroidery data supply section that supplies embroidery data of an embroidery pattern comprising a mixture of a sequin-sewn portion and an ordinary embroidery portion
  • a data generation section that determines, on the basis of supplied embroidery data, an embroidery pattern position where the first shifting operation or the second shifting operation is to be performed and inserts a jump code instructing a needle bar jump (or main-machine-shaft speed reduction instruction instructing reduction of the operating speed of the main machine shaft) into the embroidery data in correspondence with
  • the needle bar control section and the movement mechanism jump the needle bar (or reduce the operating speed of the main machine shaft) and move the sequin sewing device from the operative position to the evacuated position or from the evacuated position to the operative position.
  • the embroidery data have a jump code instructing a needle bar jump (or main-machine-shaft speed reduction instruction instructing reduction of the operating speed of the main machine shaft) inserted therein in advance in correspondence with an embroidery pattern position where the first shifting operation or the second shifting operation is to be performed, and, in accordance with the jump code (or main-machine-shaft speed reduction instruction) inserted in the embroidery data, the needle bar control section and the movement mechanism jump the needle bar (or reduce the operating speed of the main machine shaft) and move the sequin sewing device from the operative position to the evacuated position or from the evacuated position to the operative position.
  • a jump code instructing a needle bar jump or main-machine-shaft speed reduction instruction instructing reduction of the operating speed of the main machine shaft
  • FIG. 1 is a perspective view showing a general outer appearance of a multi-head sewing machine in accordance with a first embodiment of the present invention
  • FIG. 2 is a left side view showing in enlarged scale a part of an example sequin sewing device attached to one of the machine heads in the embodiment of the present invention, which particularly shows the sequin sewing device lowered to its operative position;
  • FIG. 3 is a left side view of the sequin sewing device, which shows the sequin sewing device raised to its evacuated position;
  • FIG. 4 is a right side view showing in enlarged scale a part of a sequin feed mechanism in the embodiment of the present invention
  • FIG. 5 is a block diagram showing an example control system of the embroidery sewing machine according to the embodiment of the present invention.
  • FIG. 6 is a flow chart showing an embodiment of processing performed in the embodiment for automatically creating needle bar jump data on the basis of embroidery data and then inserting the created needle bar jump data in the embroidery data;
  • FIG. 7 is a diagram showing an embroidery pattern that comprising a mixture of sequin-sewn portions and ordinary embroidery portions.
  • FIG. 8 is a schematic diagram showing example formats of embroidery data corresponding to the embroidery pattern of FIG. 7 , of which (a) shows original embroidery data before insertion of jump codes and (b) shows embroidery data after insertion of jump codes.
  • FIG. 1 shows a four-head embroidery sewing machine equipped with four sewing machine heads and constructed in accordance with an embodiment of the present invention.
  • Needle bar cases 2 are provided in corresponding relation to the sewing machine heads, and a needle plate 30 is disposed under each of the needle bar cases 2 .
  • Sequin sewing device 1 is attached to the left side and/or right side of each of the needle bar cases 2 ; in the illustrated example, the sequin sewing device 1 is attached to only the left side of the associated needle bar case 2 .
  • Each of the needle bar cases 2 comprises a multi-needle structure, and, in the case where the sequin sewing device 1 is attached to only the left side of the associated needle bar case 2 as in the illustrated example, the leftmost needle in the needle bar case 2 is used as a sequin-sewing needle bar (i.e., sequin needle bar).
  • an embroidery frame 31 is driven in left-right (X) and front-rear (Y) directions in accordance with predetermined sewing data.
  • FIG. 2 is a left side view showing in enlarged scale one of the sequin sewing devices 1
  • the sequin sewing device 1 includes a mounting base 4 , on which are supported a reel 5 having a continuous sequin strip 3 wound thereon and a sequin feed mechanism 6 .
  • the mounting base 4 is mounted, via two connecting arms 8 , on a base 7 that is in turn fixed to the left side surface of the needle bar case 2 .
  • Each of the connecting arms 8 is pivotably connected at its opposite ends to the mounting base 4 and fixed base 7 , and the mounting base 4 is vertically movable (i.e., ascendable and descendable) relative to the fixed base 7 (and hence the needle bar case 2 ).
  • Air cylinder 9 is provided on the mounting base 4 and fixed to a bracket 10 that is pivotably connected to the mounting base 4 .
  • Rod of the air cylinder 9 has a distal end fixed to a bracket 11 that is pivotably connected to the fixed base 7 .
  • the mounting base 4 vertically moves relative to the fixed base 7 , so that the entire sequin sewing device 1 vertically moves between a lowered position (i.e., operative position) where the sewing device can sew a sequin and a predetermined evacuated position (i.e., upper position shown in FIG. 3 ) where the sewing device is evacuated above and away from the lowered position.
  • a lowered position i.e., operative position
  • a predetermined evacuated position i.e., upper position shown in FIG. 3
  • FIG. 4 is a right side view showing in enlarged scale a part of the sequin feed mechanism 6 .
  • the sequin feed mechanism 6 is attached to a supporting plate 12 that is in turn mounted on a lower portion of the mounting base 4 .
  • Support plate 13 for supporting thereon sequins is horizontally attached to the lower end of the supporting plate 12 , and a continuous sequin strip 3 let out from the reel 5 is led onto the upper surface of the support plate 13 .
  • Pivot arm 15 pivotable by a motor 14 fixed to the mounting base 4 , is supported on the supporting plate 12 .
  • Feed lever 16 is pivotably connected to a free end portion of the pivot lever 15 .
  • the feed lever 16 is driven in a forward-rearward direction, by means of the motor 14 , so as to sequentially feed the continuous sequin strip 3 at a predetermined pitch.
  • Movable blade 17 is rotatably supported on a lower portion of the supporting plate 12 , and a fixed blade 18 is formed on an end edge portion of the support plate 13 adjacent to the movable blade 17 .
  • the movable blade 17 is normally retained, by means of a torsion spring 19 , in an evacuated position spaced upward from the fixed blade 18 .
  • the movable blade 17 is pressed by a needle clamp 21 provided at the lower end of a needle bar 20 as the needle bar 20 descends.
  • the sequin feed mechanism 6 is of the well-known type and has a construction as disclosed in Patent Literature 1 discussed above, and thus a detailed description of the sequin feed mechanism 6 is omitted here.
  • FIG. 5 is a block diagram showing an example control system of the embroidery sewing machine according to the instant embodiment of the present invention.
  • Various operations performed by the embroidery sewing machine are controlled by a microcomputer that includes a CPU (Central Processing Unit) 41 , ROM (Read-Only Memory) 42 and RAM (Random Access Memory) 43 .
  • Panel section 44 comprises switches and various other operators operable by a user to make various settings, selections, instructions, etc., a display and various other components.
  • Storage section 45 which may comprise a hard disk, removable storage medium, etc., stores various control programs for carrying out the present invention, various operation control programs, embroidery-pattern sewing data corresponding to various embroidery patterns, etc.
  • drivers e.g., a motor, solenoid, cylinder and the like
  • FIG. 5 shows only the drivers 47 - 51 .
  • Main machine shaft driver 47 includes a main machine shaft motor. As well known in the art, a main machine shaft is rotated in accordance with a machine operation instruction, in response to which the needle bars selected in the individual machine heads are driven vertically. The rotation of the main machine shaft is stopped in accordance with a machine stop instruction.
  • the embroidery frame driver 48 includes X-axis and Y-axis driving motors for driving the embroidery frame 31 in the X-axis and Y-axis directions. As well known in the art, the embroidery frame 31 is driven, in the X-axis and Y-axis directions, in accordance with a stitch-by-stitch sewing pattern (sewing widths and directions) corresponding to embroidery-pattern sewing data.
  • the color change driver 49 includes motors for sliding the needle bar cases 2 of the individual machine heads. As also well known in the art, when a colored thread change is to be effected, the needle bar cases 2 of the individual machine heads are slid to select one of the needle bars which has a desired colored thread set thereon. When sequin sewing is to be performed, the needle bar 20 corresponding to the sequin sewing device 1 is selected.
  • the needle bar jump driver 50 includes solenoids etc, for placing the needle bars 20 of the individual machine heads in a jump-sewing state. As also well known in the art, if the needle bar 20 is jumped, the needle bar 20 is held in a predetermined upper jump position and prevented from being driven vertically, even when the main machine shaft is rotating.
  • the sequin driver 51 includes a driver (i.e., the aforementioned motor 14 ) for driving the sequin feed mechanism 6 of the sequin sewing device 1 , and an elevating driver (i.e., the aforementioned air cylinder 9 ).
  • the driver (motor 14 ) for driving the sequin feed mechanism 6 is controlled, by the CPU 14 , in correspondence with each sequin sewing stitch during a sequin sewing operation.
  • the elevating driver (air cylinder 9 ) is controlled, by the CPU 14 , to move the sequin sewing device 1 to the lowered or operative position prior to the start of the sequin sewing operation and move the sequin sewing device 1 to the evacuated position after the end of the sequin sewing operation.
  • first shifting operation an operation for shifting the sequin sewing device 1 from the operative position to the evacuated position
  • second shifting operation an operation for shifting the sequin sewing device 1 from the evacuated position to the operative position
  • first shifting operation may be either automatically determined by the CPU 41 in accordance with a progression of the embroidery sewing operation or automatically instructed at predetermined timing by instruction data, inserted in embroidery data, in accordance with a progression of the embroidery sewing operation, or may be instructed at appropriate timing in response to operation by a human operator of the sewing machine.
  • the CPU 41 performs needle bar control for inhibiting or delaying the descending movement of the needle bar while keeping the sewing machine in the operating condition (i.e., without the sewing machine being deactivated).
  • First embodiment of the needle bar control comprises inhibiting the descending movement of the needle bar by means of a needle bar jump mechanism, as will be described in detail below.
  • the CPU 41 and needle bar jump driver 50 function as a needle bar control section, and the needle bar jump driver 50 is driven to cause the needle bar 20 to jump under the control of the CPU 41 .
  • the needle bar jump driver 50 is driven to cause the needle bar 20 to jump under the control of the CPU 41 .
  • the jump control of the needle bar 20 is terminated, after which the needle bar 20 is driven vertically in accordance with the rotation of the main machine shaft.
  • the needle clamp 21 of the vertically-driven (i.e., ascending and descending) needle bar 20 can be reliably prevented from hitting the movable blade 17 of the sequin sewing device 1 .
  • the aforementioned control for causing the needle bar 20 to jump at the time of the first or second shifting operation is advantageous particularly in a case where, during sewing of one embroidery pattern, switching is performed as necessary between the sequin sewing operation and the ordinary embroidery sewing operation, using the same needle bar 20 (i.e., the same colored thread) as used in the sequin sewing operation, with the sewing machine maintained in the operating condition (i.e., without the rotation of the main machine shaft being stopped).
  • the sewing machine i.e., without the rotation of the main machine shaft being stopped.
  • the human operator can position the sequin sewing device 1 in the operative position or in the evacuated position with the sewing machine maintained in the operating state (i.e., without stopping the rotation of the main machine shaft) by performing the first or second shifting operation to vertically move the sequin sewing device 1 while jumping the needle bar 20 ; in this way, it is possible to smoothly perform the sequin sewing and ordinary embroidery sewing, using the same thread needle bar 20 , while alternately switching between the sequin sewing and ordinary embroidery sewing operations.
  • the needle clamp 21 of the vertically-driven (i.e., ascending and descending) needle bar 20 can be reliably prevented from hitting the movable blade 17 of the sequin sewing device 1 , because the sequin sewing device 1 is held in the upper evacuated position away from the operative position.
  • an embroidery pattern to be sewn comprises a mixture of sequin-sewn portions and ordinary embroidery portions i.e. that requires a combination of sequin sewing and ordinary embroidery sewing in such a form that, here and there in the embroidery pattern, a partial pattern change occurs from sequin sewing to ordinary embroidery sewing or from ordinary embroidery sewing to sequin sewing with a same colored thread used.
  • original embroidery data supplied from an embroidery pattern data memory i.e., the aforementioned storage section 45
  • original embroidery data supplied from an embroidery pattern data memory are in the conventionally-known format with no needle bar jump code set in correspondence with a partial pattern change position of the embroidery pattern.
  • the instant embodiment automatically creates jump data and inserts the created jump data in the embroidery data at a necessary pattern change position.
  • step S 1 of FIG. 6 embroidery data groups, each having n stitches (“n” represents a predetermined plural number), are sequentially pre-read from among the embroidery data stored in the embroidery pattern data memory.
  • the stored embroidery data are sequentially pre-read per n-stitch group; more specifically, the embroidery data group of 1st to n-th stitches is first pre-read collectively, then the embroidery data group of (n+1)-th to 2n-th stitches is pre-read collectively, and so on.
  • the number of pre-read stitches n need not always be constant and may be varied as necessary.
  • Each pre-read embroidery data group of n stitches is stored into a working area of the RAM 43 and then used in determination operations at steps to be described below, and a “non-data jump code” etc. generated at steps to be described below are inserted in the embroidery data stored in the working area.
  • the sequin code is an instruction code for instructing feed-out of a sequin per predetermined stitch.
  • step S 3 a further determination is made, at step S 3 , as to which position of the embroidery data is an embroidery pattern position where the second shifting operation is to be performed. Then, in correspondence with the determined embroidery pattern position, a “sequin lowering instruction” for instructing that the second shifting operation be performed and a non-data jump code (i.e., a code instructing only a needle bar jump with zero stitch data) are generated, and the thus-generated non-data jump code is inserted in the embroidery data for an appropriate number of stitches.
  • a “sequin lowering instruction” for instructing that the second shifting operation be performed and a non-data jump code i.e., a code instructing only a needle bar jump with zero stitch data
  • the number of stitches for which the non-data jump code is to be inserted is set to correspond to a time required to lower the sequin sewing device 1 from the evacuated position to the operative position, and the number is varied in accordance with the number of rotations of the main machine shaft. For example, if the non-data jump code is inserted for three stitches, the embroidery frame 31 is kept unmoved (i.e., kept in the jump state) at sewing timing of these stitches (because of the zero stitch data), during which time the sequin sewing device 1 is lowered from the evacuated position to the operative position.
  • step S 3 the i-th stitch with no sequin code set therefor and (i+1)-th stitch with a sequin code set therefor are identified, and a boundary between the i-th stitch and the 1+i)-th stitch is determined to be an embroidery pattern position where the second shifting operation is to be performed. Then, a non-data jump code for an appropriate number of stitches is inserted in the embroidery data following the i-th stitch, and a sequin lowering instruction is inserted in correspondence with the first one of the appropriate number of stitches.
  • next step S 4 a determination is made, on the basis of the pre-read embroidery data group of n stitches, as to whether or not the first shifting operation is to be performed for shifting the sequin sewing device 1 from the operative position to the evacuated position.
  • the sequin sewing device 1 in the instant embodiment is moved upward from the operative position to the evacuated position only after it has been confirmed that more than a predetermined number of stitches with no sequin code have occurred in succession, rather than being moved upward immediately upon detection of a stitch with no sequin code occurring in the embroidery data.
  • step S 4 it is determined, at step S 4 , that the first shifting operation should be performed, i.e. the sequin sewing device should be caused to ascend or raised (namely, YES determination is made at step S 4 ), only when absence of the sequin code has been detected in succession for a predetermined number of stitches (e.g., 100 stitches) following detection of a stitch with no sequin code.
  • a predetermined number of stitches may be variably set as desired by the human operator of the sewing machine.
  • step S 4 whether or not the sequin code has not appeared (i.e., has not been detected) in succession for a predetermined number of stitches (e.g., 100 stitches) is determined regarding not only the current pre-read embroidery data of n stitches but also the last pre-read embroidery data of n stitches. All through the predetermined number of stitches (e.g., 100 stitches), the sequin sewing device 1 is maintained in the lowered position and thus the movable blade 17 is hit by the needle clamp 21 although the ordinary embroidery sewing is being performed; however, the instant embodiment accepts the hitting by the needle clamp 21 as inevitable, in order to give priority to minimization of the waste of the working time.
  • a predetermined number of stitches e.g. 100 stitches
  • the sequin sewing device 1 With the sequin sewing device 1 maintained in the lowered position all through the predetermined number of stitches, the ordinary embroidery sewing is carried out with no sequin feed-out, because there is no sequin code recorded for these stitches. Needless to say, the sequin sewing device 1 may be raised immediately upon detection of when a stitch with no sequin code, without a leeway being set for the ascending movement of the sequin sewing device 1 as noted above; in this case, it is possible to completely prevent the movable blade 17 from being hit by the needle clamp 21 .
  • a “sequin raising instruction” for instructing that the first shifting operation be performed is generated, at step S 5 , in correspondence with an embroidery pattern position having been determined to be a position where the first shifting operation is to be performed (i.e., an embroidery pattern position the predetermined number of stitches after the detection that the stitch with no sequin code).
  • a non-data jump code is generated and inserted in the embroidery data for an appropriate number of stitches, in a manner similar to the above-described.
  • the number of stitches for which the non-data jump code is to be inserted is set to correspond to a time required to raise the sequin sewing device 1 from the operative position to the evacuated position.
  • step S 6 a determination is made as to whether or not an “operation routine” of the sewing machine has already been started. If the “operation routine” has not yet been started as determined at step S 6 , the operation routine is started at step S 7 .
  • the “operation routine” step S 7 the main machine shaft is rotated, and the embroidery data stored in the working area of the RAM 43 are sequentially read out, stitch by stitch, so that embroidery sewing (sequin sewing or ordinary embroidery sewing) is performed in accordance with the read-out embroidery data. If, on the other hand, the “operation routine” has already been started as determined at step S 6 , a determination is made, at step S 8 , as to whether or not an embroidery data group of next n stitches should be read.
  • a pre-read instruction is generated by the “operation routine” step S 7 .
  • the processing returns from step S 8 to step S 1 in order to pre-read the embroidery data of the next n stitches.
  • steps S 2 -S 5 are repeated to generate a “sequin lowering instruction” or “sequin raising instruction” and “non-data jump code” and insert the thus-generated instruction and jump code into the embroidery data of the next n stitches in question.
  • the operation of the sewing machine is performed in a continuous manner so that the “operation routine” step S 7 is carried out continuously, unless a machine stop instruction is given.
  • the sewing machine is deactivated temporarily even during the course of embroidery pattern sewing, so as to effect cutting of the sewing thread so far used and selection of and switching to the needle bar corresponding to a new colored thread.
  • no machine stop instruction is generated and thus the operation of the sewing machine is continued without being stopped, unless a colored thread change is instructed.
  • any machine stop instruction inserted in the embroidery data is deleted as a jump code is inserted through the operation of step S 3 or S 5 .
  • an end instruction is generated, in place of a pre-read instruction, by the “operation routine” step S 7 , in response to which the processing of FIG. 6 is brought to an end.
  • an embroidery pattern to be sewn is of a type comprising a mixture of sequin-sewn portions and ordinary embroidery portions, i.e. requiring a combination of sequin sewing and ordinary embroidery sewing as illustrated in FIG. 7 .
  • a 1 -A 3 indicate ordinary embroidery sewing (ordinary embroidery portions)
  • B 1 and B 2 indicate sequin sewing (sequin-sewn portions).
  • the stored embroidery data are read out from the external memory into the sewing machine and then stored into the embroidery pattern data memory (storage section 45 ) that is, for example, in the form of a hard disk. Then, for how many switches a non-data jump code is to be generated at the time of raising/lowering the sequin sewing device 1 is set, and at which one of successive stitches of the ordinary embroidery sewing following the sequin sewing the sequin sewing device 1 is to be evacuated upward, i.e. how many stitches of the ordinary embroidery sewing have to be counted before the sequin sewing device 1 is evacuated upward (namely, the predetermined number of stitches noted above in relation to step S 4 of FIG.
  • a non-data jump code is generated for three stitches and the sequin sewing device 1 is evacuated when 100 stitches or over of the ordinary embroidery sewing have occurred following the sequin sewing.
  • these numbers of stitches may be preset or variably set by the human operator. Further, the number of stitches for which a non-data jump code is to be generated may be determined in accordance with the current number of rotations of the sewing machine, or may be set individually or separately for the upward evacuating movement and for the lowering movement.
  • a desired sequin needle bar is selected in accordance with colored thread data.
  • the sequin sewing device 1 is still kept in the upper evacuated position because no sequin code has been detected yet from the pre-read embroidery data.
  • the operation routine S 7 of FIG. 6 the ordinary embroidery sewing A 1 is performed using the sequin needle bar.
  • step S 4 of FIG. 6 a determination is made as to whether or not the ordinary embroidery sewing A 2 has lasted for 100 stitches or more following the sequin sewing B 1 .
  • a NO determination is made at step S 4 , so that the operation of step S 5 of FIG. 6 is skipped; thus, the sequin sewing device 1 is not evacuated and no non-data jump code is generated either.
  • the sequin sewing device 1 is still kept in the lowered position when the ordinary embroidery sewing A 2 is to be performed, through the operation routine, following the sequin sewing B 1 ; however, because of absence of the “sequin code”, the continuous sequin strip 3 is not fed so that the ordinary embroidery sewing A 2 can be performed safely.
  • step S 2 of FIG. 6 a determination is made, at step S 2 of FIG. 6 and on the basis of recognition of a sequin code, as to whether the second shifting operation is to be performed for shifting the sequin sewing device 1 from the evacuated position to the operative position. Because the sequin sewing device 1 is still kept in the lowered position at this stage, there is no need to perform the second shifting operation, and thus, a NO determination is made at step S 2 . Thus, generation and insertion of a “sequin lowering instruction” and “non-data jump code” is not executed at step S 3 of FIG. 6 .
  • the sequin feed mechanism 6 is operated, in accordance with the sequin codes, to feed the continuous sequin strip 3 , so that the sequin sewing B 2 is performed.
  • step S 4 of FIG. 6 a determination is made, at step S 4 of FIG. 6 and in an embroidery pattern position where a shift is made to the ordinary embroidery sewing, as to whether the first shifting operation is to be performed for shifting the sequin sewing device 1 from the operative position to the evacuated position. Because, in this case, the ordinary embroidery sewing A 3 lasts for 100 stitches or more, a YES determination is made at step S 4 of FIG. 6 , so that the processing goes to step S 5 .
  • step S 5 not only a “non-data jump code” for three stitches is generated and inserted, along with a “sequin raising instruction”, between the last stitch of the sequin sewing B 2 and the first stitch of the ordinary embroidery sewing A 3 .
  • the feeding of the continuous sequin strip 3 is stopped and the sequin needle bar is placed in the jump state for three stitches, during which time the sequin sewing device 1 is moved upward from the operative position to the evacuated position. Throughout such a period, the rotation of the main machine shaft is maintained.
  • the sewing machine is deactivated.
  • the instant embodiment is arranged in such a manner that, when embroidery sewing is to be performed using the sequin needle bar before or after sequin sewing, the raising/lowering of the sequin sewing device 1 is effected, with the sequin needle bar placed in the jump state, without the sewing machine being deactivated.
  • the instant embodiment can reliably prevent the movable blade 17 from being unnecessarily hit by the needle clamp 21 and thereby prevent the movable blade 17 from being easily broken.
  • the instant embodiment can prevent noise sound, produced by the sequin needle bar during embroidering, from becoming great.
  • the embodiment can significantly reduce a waste of the working time as compared to the conventional counterpart in which the raising/lowering of the sequin sewing device is effected with the sewing machine deactivated. Furthermore, in a case where the number of embroidering stitches is relatively small and thus the operating efficiency may be lowered if the sequin sewing device is raised and lowered, the raising/lowering of the sequin sewing device may be omitted.
  • the CPU 41 functions as a needle bar control section, which delays the descending movement of the needle bar 20 by reducing the moving speed of the needle bar 20 .
  • the speed reduction of the needle bar 20 can be achieved by reducing the rotation speed of the main machine shaft.
  • Raising/lowering of the sequin sewing device 1 similar to the aforementioned raising/lowering (i.e., the aforementioned first shifting operation or second shifting operation), is effected while the descending movement of the needle bar 20 is being delayed.
  • the raising/lowering of the sequin sewing device 1 i.e., the aforementioned first shifting operation or second shifting operation
  • the number of rotations of the main machine shaft at the time of the speed reduction may be preset or variably set as desired by the human operator of the sewing machine.
  • the raising/lowering of the sequin sewing device 1 can be effected without the sewing machine being deactivated.
  • the second embodiment can prevent the movable blade 17 from being unnecessarily hit by the needle clamp 21 and thereby prevent the movable blade 17 from being easily broken.
  • the second embodiment can prevent noise sound, produced by the sequin needle bar during embroidering, from becoming great. Further, the second embodiment can significantly reduce a waste of the working time as compared to the conventional counterpart in which the raising/lowering of the sequin sewing device is effected with the sewing machine deactivated.
  • each of the embodiments is arranged in such a manner that embroidery data are pre-read per predetermined number of stitches and the “non-data jump code” or “main-machine-shaft speed reduction instruction”, intended to shift the sequin sewing device 1 vertically between the evacuated position and the operative position, is generated and inserted substantially concurrently with (or slightly ahead of the sewing operation.
  • the present invention is not so limited and may be arranged in such a manner that, when embroidery data of a desired embroidery pattern have been read from an external memory to the sewing machine before the operation of the sewing machine is started, all of the embroidery data of the embroidery pattern are checked, then all “sequin lowering instructions”, “sequin raising instructions” and “non-data jump codes” (or “main-machine-shaft speed reduction instructions”) to be inserted are generated and inserted into the embroidery data and then the operation of the sewing machine is started.
  • “sequin lowering instructions”, “sequin raising instructions” and “non-data jump codes” may be inserted in advance in embroidery data of a desired embroidery pattern, and such embroidery data having the jump codes (or “main-machine-shaft speed reduction instructions”) inserted therein may be read from an external memory or the like into the sewing machine.
  • the sequin sewing device 1 can be held in an intermediate position (hereinafter referred to as “lower evacuated position”) between the operative position and the aforementioned evacuated position (hereinafter referred to as “upper evacuated position”). If the sequin sewing device 1 is caused to vertically move only between the operative position and the lower evacuated position at the time of switching between sequin sewing and ordinary embroidery sewing using the sequin needle bar, it is possible to reduce the time required for the vertical movement of the sequin sewing device 1 . In such a case, it is better to evacuate the sequin sewing device 1 to the upper evacuated position when the sewing machine has been deactivated.
  • the evacuated position used may be any one of two or more predetermined evacuated positions, rather than just one, as long as it is a position where the sequin sewing device 1 can not perform sequin sewing (i.e., where the movable blade 17 is not hit by the needle clamp 21 ).
  • the drive means for vertically moving the sequin sewing device 1 is not limited to the air cylinder 9 and may be an electric motor or other actuator.
  • the present invention may be applied to sewing machines of various other types equipped with a sequin sewing device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US11/678,701 2006-02-27 2007-02-26 Sewing machine with sequin sewing device Abandoned US20070199490A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-051157 2006-02-27
JP2006051157A JP2007229013A (ja) 2006-02-27 2006-02-27 シークイン縫着装置を備えたミシン

Publications (1)

Publication Number Publication Date
US20070199490A1 true US20070199490A1 (en) 2007-08-30

Family

ID=38442816

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/678,701 Abandoned US20070199490A1 (en) 2006-02-27 2007-02-26 Sewing machine with sequin sewing device

Country Status (4)

Country Link
US (1) US20070199490A1 (ko)
JP (1) JP2007229013A (ko)
KR (1) KR100790665B1 (ko)
CN (2) CN101029434A (ko)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080302287A1 (en) * 2007-06-08 2008-12-11 Tokai Kogyo Mishin Kabushiki Kaisha Embroidery sewing machine and control method therefor
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
CN110468524A (zh) * 2018-05-10 2019-11-19 天津宝盈电脑机械有限公司 一种马头式桌上型多功能单头绣花机
US10619296B2 (en) 2017-01-06 2020-04-14 Under Armour, Inc. Articles with embroidered sequins and methods of making
CN114687081A (zh) * 2020-12-30 2022-07-01 杰克科技股份有限公司 缝纫机组件的定位方法和缝纫机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009112593A (ja) * 2007-11-07 2009-05-28 Barudan Co Ltd 多頭ミシン及び刺繍方法
JP5384956B2 (ja) * 2009-01-21 2014-01-08 Ｊｕｋｉ株式会社 ミシン
JP5416608B2 (ja) * 2010-02-10 2014-02-12 株式会社バルダン シークイン供給装置を備える多針ミシン
JP5374406B2 (ja) * 2010-02-17 2013-12-25 株式会社バルダン シークイン供給装置を備える多針ミシン
CN102535023A (zh) * 2010-12-20 2012-07-04 吴江赴东纺织集团有限公司 缝纫机绣片缝合装置
CN104358035B (zh) * 2014-10-29 2017-03-15 际华三五三四制衣有限公司 一种警服袖口翻折边夹扎热熔条的缝制装置
JPWO2022065083A1 (ko) * 2020-09-24 2022-03-31

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US700305A (en) * 1901-11-07 1902-05-20 Robert Cornely Machine for fixing spangled material to textile fabrics.
US3390650A (en) * 1965-10-27 1968-07-02 Arnold G. Ochsner Decorating attachment for embroidery machine
US4765265A (en) * 1985-09-13 1988-08-23 Jakob Schlaepfer & Co., Ag. Applique machines
US4807546A (en) * 1987-12-04 1989-02-28 Sequins Of Distinction, Inc. Sequin application apparatus for shuttle embroidery machine
US4848253A (en) * 1987-08-21 1989-07-18 Tokai Industrial Sewing Machine Co., Ltd. Embroidery machine for sewing spangles on fabrics
US5562057A (en) * 1992-05-11 1996-10-08 Lenson; Harry Dish-shaped sequin application apparatus and method for shuttle embroidery machine
US5755168A (en) * 1995-10-13 1998-05-26 Zsk Stickmaschinen G.M.B.H. Sequin delivery system for embroidery and/or sewing machines
US5958535A (en) * 1996-03-07 1999-09-28 Bomei Ag Decorative element
US6971325B1 (en) * 2004-07-26 2005-12-06 Kabushikikaisha Barudan Method for mending an embroidery pattern
US7082884B2 (en) * 2002-11-21 2006-08-01 Tokai Kogyo Mishin Kabushiki Kaisha Sequin feeder

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US700305A (en) * 1901-11-07 1902-05-20 Robert Cornely Machine for fixing spangled material to textile fabrics.
US3390650A (en) * 1965-10-27 1968-07-02 Arnold G. Ochsner Decorating attachment for embroidery machine
US4765265A (en) * 1985-09-13 1988-08-23 Jakob Schlaepfer & Co., Ag. Applique machines
US4848253A (en) * 1987-08-21 1989-07-18 Tokai Industrial Sewing Machine Co., Ltd. Embroidery machine for sewing spangles on fabrics
US4807546A (en) * 1987-12-04 1989-02-28 Sequins Of Distinction, Inc. Sequin application apparatus for shuttle embroidery machine
US5562057A (en) * 1992-05-11 1996-10-08 Lenson; Harry Dish-shaped sequin application apparatus and method for shuttle embroidery machine
US5755168A (en) * 1995-10-13 1998-05-26 Zsk Stickmaschinen G.M.B.H. Sequin delivery system for embroidery and/or sewing machines
US5958535A (en) * 1996-03-07 1999-09-28 Bomei Ag Decorative element
US7082884B2 (en) * 2002-11-21 2006-08-01 Tokai Kogyo Mishin Kabushiki Kaisha Sequin feeder
US6971325B1 (en) * 2004-07-26 2005-12-06 Kabushikikaisha Barudan Method for mending an embroidery pattern

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080302287A1 (en) * 2007-06-08 2008-12-11 Tokai Kogyo Mishin Kabushiki Kaisha Embroidery sewing machine and control method therefor
US8256362B2 (en) * 2007-06-08 2012-09-04 Tokai Kogyo Mishin Kabushiki Kaisha Embroidery sewing machine and control method therefor
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
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
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
US11359333B2 (en) 2017-01-06 2022-06-14 Under Armour, Inc. Articles with structures formed from sequins
CN110468524A (zh) * 2018-05-10 2019-11-19 天津宝盈电脑机械有限公司 一种马头式桌上型多功能单头绣花机
CN114687081A (zh) * 2020-12-30 2022-07-01 杰克科技股份有限公司 缝纫机组件的定位方法和缝纫机

Also Published As

Publication number Publication date
KR100790665B1 (ko) 2008-01-02
KR20070089065A (ko) 2007-08-30
JP2007229013A (ja) 2007-09-13
CN101029434A (zh) 2007-09-05
CN201021467Y (zh) 2008-02-13

Similar Documents

Publication Publication Date Title
US20070199490A1 (en) Sewing machine with sequin sewing device
US7934461B2 (en) Sewing machine capable of sewing sequins and method for setting sequin feed amount therefor
US7500438B2 (en) Chain-stitch sewing machine
US7290493B2 (en) Sewing machine
JP2008212443A (ja) ミシン
US6971325B1 (en) Method for mending an embroidery pattern
US8844453B2 (en) Sewing machine
US5913276A (en) Multihead sewing machine with improved shuttle drive control
JP4466348B2 (ja) ミシンの糸通し装置及びミシン
JP2009095503A (ja) ミシン用の布押え具及びミシン
JP2009100991A (ja) ミシン及びフリーモーション縫製用止め縫い処理プログラム
US5881660A (en) Needle thread changing device of sewing machine
WO2020054555A1 (ja) コード材を縫着可能なミシン及びコードカット装置
WO2020054556A1 (ja) コード材を縫着可能なミシン及びコード材を供給する装置並びにコード案内体
JP2002306876A (ja) 穴かがりミシン
JP2006020757A (ja) 刺繍縫製可能なミシン
JP4362329B2 (ja) パーツ縫付方法
JP4316069B2 (ja) 穴かがり縫いミシン
JP4420704B2 (ja) 多頭式ミシン
JP3737748B2 (ja) ボタン付けミシン
JP2005205153A (ja) シークイン供給装置
JPH11333172A (ja) ミシンの糸張力制御装置
JPH08218265A (ja) 自動刺繍機
WO2020054557A1 (ja) コード材を縫着可能なミシン及びコード材の縫い出しを制御する方法
JPH11262592A (ja) 糸端保持手段を備えた多針ミシン

Legal Events

Date Code Title Description
AS Assignment

Owner name: TOKAI KOGYO MISHIN KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SUZUKI, KENJI;REEL/FRAME:018931/0902

Effective date: 20070213

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION