EP3763864A1 - Spulenmodulbewegungsmechanimus - Google Patents

Spulenmodulbewegungsmechanimus Download PDF

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Publication number
EP3763864A1
EP3763864A1 EP19219696.2A EP19219696A EP3763864A1 EP 3763864 A1 EP3763864 A1 EP 3763864A1 EP 19219696 A EP19219696 A EP 19219696A EP 3763864 A1 EP3763864 A1 EP 3763864A1
Authority
EP
European Patent Office
Prior art keywords
bobbin
transmission member
module
motion
thread
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.)
Withdrawn
Application number
EP19219696.2A
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English (en)
French (fr)
Inventor
Hsu Hui Chen
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.)
Chee Siang Industrial Co Ltd
Original Assignee
Chee Siang Industrial 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 Chee Siang Industrial Co Ltd filed Critical Chee Siang Industrial Co Ltd
Publication of EP3763864A1 publication Critical patent/EP3763864A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D05B59/04—Devices for changing the bobbin
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices

Definitions

  • the present invention relates to a bobbin module motion mechanism applied to wind bobbin thread, and more in particular, to a bobbin module motion mechanism capable of separately rotating a bobbin and a bobbin case, and capable of separating the bobbin and the bobbin case from each other.
  • the capacity of the bobbin to accommodate the bobbin thread cannot be too much, but on the other hand, the length of the bobbin thread is relatively limited, so that the bobbin must be changed frequently to avoid the bottom thread running out; besides, when the bobbin thread is replaced, not only the sewing machine must stop the sewing work, but even the operator must manually replacing the bobbin thread, which relatively does not increase the efficiency.
  • the above-mentioned automatic bobbin changing device detaches simultaneously the bobbin case and the bobbin that is about to run out of the bobbin thread from the rotary hook; after that, the bobbin that is about to run out of the bobbin thread has a part of the bobbin thread remaining therein and also located inside the bobbin case.
  • the operator after removing the residual bobbin thread in the bobbin, the operator must manually mount the bobbin to the winder to rewind the bobbin thread around the bobbin, which leads to increased manual operation time.
  • the main purpose of the present invention is to not only separate the bobbin and the bobbin case from each other, but also make the bobbin and the bobbin case rotate separately, thereby assisting the operator in completing the operation of removing the residual bobbin thread and winding the bobbin thread in a short time; so that, there is no need for manual operation by the operator.
  • the bobbin module motion mechanism of the present invention can drive a bobbin and a bobbin case in an assembled state, and comprises a first motion module, a second motion module and a third motion module.
  • the first motion module has a first transmission member coaxially capable of rotating along a motion axis, and the bobbin can be driven by the first transmission member to synchronously rotate;
  • the second motion module has a second transmission member coaxially capable of rotating along the motion axis, and the bobbin case can be driven by the second transmission member to synchronously rotate;
  • the third motion module has a third transmission member, and the third transmission member can move along the direction of the motion axis, so that both the bobbin and the bobbin case can be changed from the assembled state to a state of separation between the bobbin and the bobbin case by the third transmission member.
  • the third transmission member is coaxially disposed on the motion axis, so that the third transmission member can coaxially move along the motion axis;
  • the third transmission member is movably coupled to the first transmission member or the second transmission member, and the first transmission member and the second transmission member are respectively movably sleeved onto two ends of the third transmission member, so that the third transmission member can move relative to the first and second transmission members;
  • a synchronization module is disposed between the third transmission member and one of the first transmission member and the second transmission member, wherein the synchronization module makes the third transmission member and one of the first transmission member and the second transmission member simultaneously rotate or move linearly.
  • the synchronization module has a synchronization groove and a synchronization protruding pillar, and the synchronization groove is formed on one of the first transmission member and the second transmission member, and wherein the synchronization protruding pillar is formed on the third transmission member and passes through the synchronization groove.
  • the third transmission member is assembled to the first motion module or the second motion module, and can drive the first motion module or the second motion module as a whole to move.
  • the third motion module further has a returning member, and the returning member can generate restoring force acting on the third transmission member, so that the third transmission member makes the bobbin and the bobbin case be in the assembled state through the restoring force.
  • one of the second transmission member and the third transmission member is connected to the bobbin case; a limiting assembly is arranged between the bobbin case and the transmission member connected to the bobbin case, and the limiting assembly can restrict the bobbin case from moving or rotating relative to the transmission member connected to the bobbin case.
  • the limiting assembly has an annular groove formed on the transmission member and a latch disposed on the bobbin case, and the latch can be snapped fit into the annular groove to restrict the bobbin case from having the axial movement.
  • the bobbin case has a bobbin shaft sleeved onto the transmission member, and the limiting assembly has a positioning groove and a positioning protrusion; one of the positioning groove and the positioning protrusion is formed on the bobbin shaft, and the other is formed on the transmission member; the positioning protrusion enters the positioning groove to restrict the bobbin casing from rotating.
  • the present invention features three transmission members, wherein two transmission members are coaxially disposed on a motion axis.
  • One of the two transmission members can rotate, so that the rotating transmission member can drive the bobbin to rotate about the motion axis; the other can drive the bobbin case to rotate about the motion axis; thus the remaining transmission member moves to make the moving transmission member drive the bobbin case to move linearly along the motion axis.
  • the two rotating transmission members cooperating with a movable transmission member not only can separate the bobbin and the bobbin case from each other, but also allow the bobbin and the bobbin case to rotate separately, thereby assisting the operator in completing the operation of removing residual bobbin thread and winding the bobbin thread in a short time; so that, there is no need for manual operation by the operator.
  • the automatic bobbin winding sewing machine of the present invention is used in conjunction with a bobbin module 50 (as shown in FIG. 3 ) and comprises a sewing machine body 10, a bobbin replacing device 20, a bobbin thread introduction device 30 and a residual bobbin thread removing device 40.
  • the bobbin module 50 comprises a bobbin 51 capable of winding bobbin thread 60 (as shown in FIG.
  • the bobbin 51 has a spool member 511 and two stop plates 512; the partial section of the spool member 511 is set as a first winding portion 511a, and the remaining section of the spool member 511 is set as a second winding portion 511b having an outer diameter larger than that of the first winding portion 511a, wherein the two stop plates 512 are spaced and formed respectively at the first winding portion 511a and the second winding portion 511b, so that the spool member 511 is positioned between the two stop plates 512; further, the spool member 511 and the two stop plates 512 jointly form a winding space 513 therein capable of accommodating the bobbin thread 60 (as shown in FIG.
  • the spool member 511 is recessed to form a spool groove 511c communicating with the winding space 513, and one of the stop plates 512 is recessed to form a limiting groove 512a communicating with the winding space 513; the spool groove 511c communicates with the limiting groove 512a, so that the spool groove 511c and the limiting groove 512a together form a through space 514 formed by indentation along the surface contour of the bobbin 51.
  • the spool member 511 of the bobbin 51 has the first winding portion 511a and the second winding portion 511b is for convenience of description.
  • a limiting flange 511d extends outwardly from the spool member 511, and the limiting flange 511d is near to the stop plate 512 where the limiting groove 512a forms thereon.
  • the bobbin case 52 has a housing 521 being of a hollow structure; a bobbin shaft 522 with a hollow structure is arranged inside the housing 521.
  • a closed end 523 and an open end 524 are respectively formed at opposite ends of the housing 521; an accommodating space 525 for accommodating the bobbin 51 is formed between the inner edge of the housing 521 and the outer edge of the bobbin shaft 522.
  • a thread guiding hole 526 forms through the housing 521 and communicates with the accommodating space 525; a thread guiding slot 527 communicating with the accommodating space 525 is formed by recessing the housing 521 from the open end 524 toward the closed end 523.
  • the housing 521 is assembled with a clamping elastic piece 528 that allows the bobbin thread 60 (as shown in FIG. 17B ) to be guided from the thread guiding slot 527 to the thread guiding hole 526, and a hook arm 529 is formed by extending outward from the housing 521; wherein, one side of the clamping elastic piece 528 is provided with a guiding opening 528a, and outer edge of the hook arm 529 is recessed to form a thread hole 529a.
  • a thread blocking piece 530 assembled on the closed end 523 of the housing 521 can restrict the bobbin thread 60 (as shown in FIG.
  • the thread blocking piece 530 has an elastically deformable elastic arm 530a near the thread hole 529a, and the elastic arm 530a is located on one side of the hook arm 529 to prevent the bobbin thread 60 from leaving the thread hole 529a.
  • the sewing machine body 10 has a base 11 (the figure only shows a particular part of the base 11), and the base 11 has a horizontally disposed lower shaft (not shown in the figure), and the lower shaft can drive a rotary hook 12 installed inside the base 11 to rotate; wherein, a working table 13 is disposed above the base 11, and the base 11 connects with a fixing frame 14, and the base 11 has a thread gripper 15 attached to the fixing frame 14.
  • the bobbin replacing device 20 is located in front of the rotary hook 12 and has a bobbin module moving assembly 21, a movable frame 22, a first jaw assembly 23 and a second jaw assembly 24, and a rotary hook 12.
  • the bobbin module moving assembly 21 is configured to drive the movable frame 22 to selectively move close to or away from the bobbin module rotating assembly 25, and has a movement driving source 211 capable of generating moving power and a transmission rod 212 assembled to the movement driving source 211.
  • the movement driving source 211 is connected to the movable frame 22, and the transmission rod 212 is fixed to the fixing frame 14 of the sewing machine body 10, so that when the movement driving source 211 generates moving power, the movement driving source 211 moves integrally along the transmission rod 212 in the axial direction. Therefore, the movable frame 22 can make the movement to be close to or away from the rotary hook 12.
  • the movable frame 22 has a first connecting end 221 and a second connecting end 222 away from the first connecting end 221.
  • An assembling portion connected to the movement driving source 211 is arranged between the first connecting end 221 and the second connecting end 222; wherein, the first jaw assembly 23 has a first jaw connection base 231 formed by two symmetric plate pieces; the first jaw connection base 231 is assembled with a immovable first fixed jaw 232, and a first pivoting portion 231a is disposed on a side away from the first fixed jaw 232; the first fixed jaw 232 is fixedly coupled to the first connecting end 221, and the first pivoting portion 231a is pivotally connected to a first movable jaw 233 that can swing; furthermore, the first movable jaw 233 has a first clamping portion 233a (as shown in FIG.
  • a first jaw driver 234 coupled to the movable frame 22 is assembled to an end of the first movable jaw 233 away from the first clamping portion 233a; wherein, the first jaw driver 234 can drive the first movable jaw 233 to swing back and forth such that the first clamping portion 233a can selectively move closed to or away from the first fixed jaw 232.
  • the second jaw assembly 24 is coupled to the second connecting end 222 of the movable frame 22, and comprises a second jaw connection base 241 having the same structure as the first jaw connection base 231, a second fixed jaw 242 having the same structure as the first fixed jaw 232, a second movable jaw 243 having the same structure as the first movable jaw 233 (as shown in FIG. 14D ) and a second jaw driver 244 having the same structure as the first jaw driver 234.
  • the second jaw connection base 241, the second fixed jaw 242, the second movable jaw 243 and the second jaw driver 244 are connected to each other in the same manner as the first jaw assembly 23. Therefore, structure description of the second jaw assembly 24 is omitted later.
  • the bobbin module rotating assembly 25 has a rotation driving source 251 and a transmission module 252.
  • the rotation driving source 251 can generate rotation power and is fixed to the fixing frame 14 of the sewing machine body 10;
  • the transmission module 252 is located between the rotation driving source 251 and the transmission rod 212 of the bobbin module moving assembly 21;
  • the transmission module 252 has a first transmission gear 252a assembled to the rotation driving source 251 and a second transmission gear 252b engaged with the first transmission gear 252a; wherein, the second transmission gear is 252a assembled to the transmission rod 212 in a coaxial manner, whereby when the rotation driving source 251 can generate the rotation power, the first and second transmission gears 252a, 252b can drive the movable frame 22 to rotate around the transmission rod 212 as the axis center.
  • the movement driving source 211 of the bobbin module moving assembly 21 the first and second jaw assemblies 23, 24 are all connected to the movable frame 22, the first and second jaw assemblies 23, 24 rotate synchronously when the movable
  • the bobbin thread introduction device 30 is assembled to the fixing frame 14 of the sewing machine body 10, and has a bobbin module motion mechanism 31, a bobbin thread clamping mechanism 32, a thread releasing mechanism 33 and a bobbin thread control mechanism 34.
  • the bobbin module motion mechanism 31 comprises a first motion module 311, a second motion module 312, a third motion module 313 and a synchronization module 314.
  • the first motion module 311 has a first driving source 3111 and a first transmission member 3112; the first driving source 3111 is assembled to the fixing frame 14 of the sewing machine body 10, and can generate rotation power to drive the first transmission member 3112 to perform a rotary motion.
  • the first transmission member 3112 is coaxially disposed along a motion axis L parallel to the first transmission member 3112, and one end of the first transmission member 3112 forms a connection plate 3112a; wherein, the first transmission member 3112 is mounted with a blade 3112b below the connection plate 3112a.
  • the blade 3112b is composed of an elastic material and has a edge portion 3112c (as shown in FIG. 10 ) below the connection plate 3112a as well as a connecting portion 3112d (as shown in FIG. 10 ) on the rear side of the connection plate 3112a.
  • the motion axis L is overlapped with the axis of the first transmission member 3112, and the first driving source 3111 is connected to the first transmission member 3112 via a first interlocking module 3113, wherein the first interlocking module 3113 has a first driving belt pulley 3113a assembled to the first driving source 3111 and a first driven belt pulley 3113b assembled to the first transmission member 3112, and the first driving belt pulley 3113a is assembled with a first belt 3113c connected to the first driven belt pulley 3113b.
  • the second motion module 312 has a second driving source 3121 capable of generating rotation power and a second transmission member 3122 spaced apart from the first transmission member 3112.
  • the second driving source 3121 is assembled to the fixing frame 14 of the sewing machine body 10, and is connected to the second transmission member 3122 through a second interlocking module 3123, such that the second driving source 3121 can drive the second transmission member 3122 to perform a rotary motion through the second interlocking module 3123;
  • the second transmission member 3122 is coaxially disposed to the first transmission member 3112 such that the axis of the second transmission member 3122 overlaps the motion axis L.
  • the second interlocking module 3123 has a second driving belt pulley 3123a assembled to the second driving source 3121 and a second driven belt pulley 3123b assembled to the second transmission member 3122, and the second driving belt pulley 3123a is connected to the second driven belt pulley 3123b via a second belt 3123c.
  • the third motion module 313 has a third driving source 3131 capable of generating moving power and a third transmission member 3132 coaxially disposed on the motion axis L.
  • the third driving source 3131 is mounted with a third interlocking module 3133, and drives the third interlocking module 3133 to move away from or into contact with the third transmission member 3132; the two ends of the third transmission member 3132 respectively pass through the first transmission member 3112 and the second transmission member 3122; that the third transmission member 3132 is movable relative to the first and second transmission members 3112, 3122 makes third transmission member 3132 movably assembled to the first and second transmission members 3112, 3122.
  • a pressing block 3132a connected to the third transmission member 3132 together with the second transmission member 3122 press a returning member 3134 located between the second transmission member 3122 and the third transmission member 3132; such that, the returning member 3134, like a spring is pressed, makes restoring force 3134a acting on the pressing block 3132a, and the magnitude of the restoring force 3134a is smaller than the moving power of the third driving source 3131.
  • the third driving source 3131 when the third driving source 3131 generates moving power to drive the third interlocking module 3133 to push against the third transmission member 3132, the third driving source 3131 overcomes the restoring force 3134a of the returning member 3134 to push the third transmission member 3132 to move linearly along the motion axis L, so that the third transmission member 3132 can be away from the third driving source 3131.
  • the synchronization module 314 is located between the second transmission member 3122 and the third transmission member 3132, and can make the second transmission member 3122 and the third transmission member 3132 rotate simultaneously.
  • the synchronization module 314 has a synchronization groove 3141 formed on the second transmission member 3122 and a synchronization protruding pillar 3142 formed on the third transmission member 3132.
  • the synchronization groove 3141 shows an elongate shape; the synchronization protruding pillar 3142 passes through the synchronization groove 3141, and can move axially in the synchronization groove 3141 while the third transmission member 3132 is moving.
  • the bobbin case 52 of the bobbin module 50 is mounted on the third transmission member 3132 of the third motion module 313, and a limiting assembly 315 is disposed between the bobbin case 52 and the third transmission member 3132.
  • the limiting assembly 315 has an anti-displacement unit 3151 capable of restricting the bobbin case 52 from having the axial movement relative to the third transmission member 3132 and an anti-rotation unit 3152 capable of restricting the bobbin case 52 from rotating relative to the third transmission member 3132.
  • the anti-displacement unit 3151 is provided with an annular groove 3151a, a latch clip 3151b and a latch 3151c.
  • the annular groove 3151a is formed on a partial portion of the third transmission member 3132 sticking out of the first transmission member 3112, and the latch clip 3151b and the latch 3151c are pivotally connected to each other. Also, both the latch clip 3151b and the latch 3151c are mounted to the closed end 523 of the bobbin case 52. In this embodiment, both the latch clip 3151b and the latch 3151c belong to components of the bobbin case 52, wherein when the bobbin case 52 is mounted on the third transmission member 3132, the third transmission member 3132 passes through the bobbin shaft 522 of the bobbin case 52, so that a partial section of the third transmission member 3132 protrudes outwardly from the closed end 523 of the bobbin case 52. In turn, the latch 3151c can be snapped fit into the annular groove 3151a to restrict the bobbin case 52 from having the axial movement.
  • the anti-rotation unit 3152 has a positioning protrusion 3152a and a positioning groove 3152b.
  • the positioning protrusion 3152a is formed on the third transmission member 3132 of the third motion module 313, and is spaced apart from the annular groove 3151a of the anti-displacement unit 3151;
  • the positioning groove 3152b is formed on the bobbin shaft 522 of the bobbin case 52; wherein, when the bobbin case 52 is mounted on the third transmission member 3132, the third transmission member 3132 passes through the bobbin shaft 522 of the bobbin case 52; such that the positioning protrusion 3152a moves into the positioning groove 3152b to restrict the bobbin case 52 from rotating.
  • the bobbin thread clamping mechanism 32 has a first moving module 321, a second moving module 322 and a clamp module 323.
  • the first moving module 321 has a first movable jaw driving source 3211 capable of making a single-stage moving travel and a first jaw transmission member 3212 connected to the first movable jaw driving source 3211; the first movable jaw driving source 3211 and first jaw transmission member 3212 are commonly connected with an avoidance unit 324; the avoidance unit 324 makes both the first movable jaw driving source 3211 and the first jaw transmission member 3212 move relatively to the second moving module 322.
  • the first movable jaw driving source 3211 drives the first jaw transmission member 3212 to move
  • the first movable jaw driving source 3211 and the first jaw transmission member 3212 both can move relative to the second moving module 322 through the avoidance unit 324.
  • the avoidance unit 324 has a swinging plate 3241 assembled to the first movable jaw driving source 3211, an assembling plate 3242 assembled to the second moving module 322, and a roller 3243 assembled to the fixing frame 14, so that the swinging plate 3241 can swing relative to the assembling plate 3242.
  • the assembling plate 3242 is recessed to form a low-centered curved guide rail 3242a, and the curved guide rail 3242a is in contact with a guide wheel 3244 connected to the first jaw transmission member 3212; wherein, a holding member 3245 is arranged between the swinging plate 3241 and the assembling plate 3242.
  • the swinging plate 3241 and the assembling plate 3242 collectively press the holding member 3245 to generate holding force 3245a acting on the swinging plate 3241; so that, the swinging plate 3241 can swing relative to the assembling plate 3242 by the holding force 3245a, and thus the guide wheel 3244 moves toward the curved guide rail 3242a, so that the guide wheel 3244 can be continuously in contact the curved guide rail 3242a through the holding force 3245a of the holding member 3245.
  • the second moving module 322 has a second movable jaw driving source 3221 capable of making two-stages moving travel and a second jaw transmission member 3222 connected to the second movable jaw driving source 3221.
  • the second movable jaw driving source 3221 is assembled to the fixing frame 14 of the sewing machine body 10, and the second jaw transmission member 3222 is connected to the assembling plate 3242 of the second moving module 322.
  • the clamp module 323 has a movable clamp 3231 pivotally coupled to the first jaw transmission member 3212 and a fixed clamp 3232 fixed to the first jaw transmission member 3212.
  • the movable clamp 3231 is driven by a clamp driving source 3233 mounted on the first jaw transmission member 3212 to bring the end of the movable clamp 3231 selectively to be close to or away from the end of the fixed clamp 3232 (as shown in FIG. 16A ).
  • the end of the movable clamp 3231 has a clamping groove 3231a
  • the end of the fixed clamp 3232 has a clamping block 3232a having a smaller volume than the clamping groove 3231a.
  • the clamp driving source 3233 drives the movable clamp 3231 to swing
  • the movable clamp 3231 moves close to the fixed clamp 3232, such that the clamping block 3232a moves into the clamping groove 3231a, and the clamping block 3232a and the clamping groove 3231a are in a close contact state.
  • the movable clamp 3231 is provided with a stop pin 3231b in the middle of the clamping groove 3231a, and clamping block 3232a of the fixed clamp 3232 is recessed to form a pin hole 3232b.
  • the stop pin 3231b will enter the pin hole 3232b.
  • the thread releasing mechanism 33 has a release lever 331 and a release driving source 332.
  • the release lever 331 has a pivot connection 3311 pivotally coupled to the fixing frame 14, and two ends of the pivoting portion 3311 respectively form a pushing portion 3312 spaced apart from the connection plate 3112a and an action portion 3313 connected to the release driving source 332.
  • a clamping space 3314 (shown in FIG. 7 ) is disposed between the edge portion 3112c of the blade 3112b and the connection plate 3112a.
  • the release driving source 332 can generate power to drive the action portion 3313 to move, so that release lever 331 swing about pivot connection 3311; such that, the pushing portion 3312 can selectively move closer to or away from the rear side of the connection plate 3112a, and the pushing portion 3312 pushes against the lower end of the connecting portion 3112d of the blade 3112b. Therefore, the edge portion 3112c is away from the connection plate 3112a to allow the clamping space 3314 to show an open state in which the bobbin thread 60 enters. Furthermore, please refer to FIGS. 5 and 11 .
  • the bobbin thread control mechanism 34 is located between the bobbin module motion mechanism 31 and the thread gripper 15 and has an adjustment member 341 and an adjustment driving source 342.
  • the adjustment member 341 has a pivoting shaft 3411 pivotally connected to the fixing frame 14, and one end of the pivoting shaft 3411 has an adjustment plate 3412 and a connecting post 3413; wherein a through hole 3412a forms through a partial area of the adjustment plate 3412, and the connecting post 3413 is connected to the adjustment driving source 342, and wherein the adjustment driving source 342 can generate the power to drive adjustment member 341 to swing about pivoting shaft 3411.
  • the residual bobbin thread removing device 40 is located at one side of the bobbin module rotating assembly 25 of the bobbin module, and has a movable mechanism 41, a thread cutting mechanism 42 and a suction mechanism 43.
  • the movable mechanism 41 has a movable driving source 411 assembled to the fixing frame 14 and a movable arm 412 pivotally connected to the fixing frame 14.
  • the movable driving source is connected to the movable arm 412, and can drive the movable arm 412 to move and swing.
  • the thread cutting mechanism 42 has a cutting driving source 421 assembled to the movable arm 412 and a cutter 422 which can be driven by the cutting driving source 421.
  • the cutting driving source 421 is assembled with a cutting transmission member 423, wherein cutting driving source 421 can drive the cutter 422 to rotate through the cutting transmission member 423, and the cutter 422 is located above the bobbin module motion mechanism 31.
  • the suction mechanism 43 is coupled to the movable arm 412 and has a suction port 431, and the suction mechanism 43 can generates a suction airflow A (as shown in FIG. 15B ).
  • the bobbin 51 of the bobbin module 50 is mounted on the first transmission member 3112 of the first motion module 311, and an alignment mechanism 44 is disposed between the bobbin 51 and the first transmission member 3112.
  • the alignment mechanism 44 can restrict the through space 514 of the bobbin 51 to be directly above the bobbin 51 when the bobbin 51 is assembled to the first transmission member 3112, so that the through space 514 is close to the cutter 422 of the thread cutting mechanism 42.
  • the alignment mechanism 44 has a guiding module 441 and a positioning module 442.
  • the guiding module 441 is configured as two magnets 4411.
  • the positioning module 441 is configured as a bump 4421 and a positioning groove 4422, which can be engaged with each other.
  • the two magnets 4411 are respectively assembled to the bobbin 51 and the first transmission member 3112. Further, the bump 4421 is formed on the first transmission member 3112, and the positioning groove 4422 is formed on the bobbin 51. Wherein, when the bobbin 51 is assembled to the first transmission member 3112, the bobbin 51 may be in a freely rotatable state.
  • the first transmission member 3112 drives the bobbin 51 to rotate, so that the two magnets 4411 are magnetically attracted to each other to shorten the relative distance of the bobbin 51 and the first transmission member 3112, and the bump 4421 is further engaged with the positioning groove 4422 to limit the relative angular position between the bobbin 51 and the first transmission member 3112; so that, the bobbin 51 cannot rotate relative to the first transmission member 3112, and when the first transmission member 3112 stops rotating and is angularly positioned, the through space 514 can be located directly above the bobbin 51 to correspond to the cutter 422.
  • the rotary hook 12 of the sewing machine body 10 and the bobbin module motion mechanism 31 of the bobbin thread introduction device 30 are respectively assembled with a bobbin module 50 wound by bobbin thread 60; such that, the bobbin module 50 of the rotary hook 12 is set as a first bobbin module 501, and the bobbin module 50 assembled to the bobbin module motion mechanism 31 is set as a second bobbin module 502; furthermore, arranged on the sewing machine body 10, the bobbin thread 60 is assembled to the thread gripper 15 of the sewing machine body 10; the bobbin thread 60 arranged in the sewing machine body 10 passes through the through hole 3412a of the bobbin thread control mechanism 34, so that a partial section of the bobbin thread 60 arranged in the sewing machine body 10 can be positioned inside the clamping space 3314 of the thread releasing mechanism 33, thereby making the blade the edge portion 3112c of the blade 3112b and the connection plate 3112a of the first transmission member 3112
  • the movement driving source 211 of the bobbin module moving assembly 21 generates moving power; so that, the bobbin module moving assembly 21 as a whole along the transmission rod 212 moves close to the rotary hook 12, and further the movable frame 22 drives the first and second jaw assemblies 23, 24 to respectively approach the rotary hook 12 of the sewing machine body 10 and the bobbin module motion mechanism 31 of the bobbin thread introduction device 30.
  • FIGS. 14C and 14D Please refer to FIGS. 14C and 14D .
  • the first and second jaw assemblies 23, 24 are respectively approach the rotary hook 12 of the sewing machine body 10 and the bobbin module motion mechanism 31 of the bobbin thread introduction device 30, the first fixed jaw 232 of the first jaw assembly 23 is in contact with the bobbin case 52 of the first bobbin module 501, while the second fixed jaw 242 of the second jaw assembly 24 is in contact with the bobbin case 52 of the second bobbin module 502.
  • the first jaw driver 234 drives the first movable jaw 233 to swing, so that the first clamping portion 233a of the first movable jaw 233 moves close to the first fixed jaw 232, and further the first clamping portion 233a is fastened to the latch clip 3151b arranged on the first bobbin module 501.
  • the first movable jaw 233 and the first fixed jaw 232 collectively clamp the first bobbin module 501; meanwhile, the second jaw driver 244 drives the second movable jaw 243 to swing, so that the second clamping portion 243a of the second movable jaw 243 moves close to the second fixed jaw 242, and further the second clamping portion 243a is fastened to the latch clip 3151b arranged on the second bobbin module 502.
  • the second movable jaw 243 and the second fixed jaw 242 collectively clamp the second bobbin module 502.
  • the movement driving source 211 of the bobbin module moving assembly 21 generates moving power; such that, the bobbin module moving assembly 21 as a whole moves along the transmission rod 212 to be away from the rotary hook 12, and further the first jaw assembly 23 drives the first bobbin module 501 to move away from the rotary hook 12 of the sewing machine body 10, and meanwhile the second jaw assembly 24 drives the second bobbin module 502 to move away from the bobbin module motion mechanism 31 of the bobbin thread introduction device 30.
  • the first jaw assembly 23 can separate the first bobbin module 501 from the rotary hook 12 through the bobbin module moving assembly 21, and also the second jaw assembly 24 separates the second bobbin module 502 from the bobbin module motion mechanism 31 through the bobbin module moving assembly 21.
  • the rotation driving source 251 of the bobbin module rotating assembly 25 can generate rotational power, so that the first transmission gear 252a of the transmission module 252 and the second transmission gear 252b of the transmission module 252 drive the transmission rod 212 of the bobbin module moving assembly 21 to rotate, so that the transmission rod 212 drives the movable frame 22 to rotate clockwise in the direction of the arrow in the figure, so that the second bobbin module 502 is positioned directly in front of the rotary hook 12.
  • the movement driving source 211 of the bobbin module moving assembly 21 generates the moving power, so that the movement driving source 211 drives the movable frame 22, along the transmission rod 212, to approach the rotary hook 12 of the sewing machine body 10, and the second bobbin module 502 is mounted on the rotary hook 12; then, the second jaw driver 244 of the second jaw assembly 24 drives the second clamping portion 243a of the second movable jaw 243 to move away from the latch clip 3151b, so that the second bobbin module 502 is indeed assembled to the rotary hook 12; now, the first jaw assembly 23 still clamps the first bobbin module 501.
  • FIGS. 14I , 14J and 14K Please refer to FIGS. 14I , 14J and 14K .
  • the movable frame 22 of the bobbin replacing device 20 is driven by the bobbin module moving assembly 21 and the bobbin module rotating assembly 25 to bring the first jaw assembly 23 close to the bobbin module motion mechanism 31 of the bobbin thread introduction device 30, so that the first bobbin module 501 mounted to the bobbin module motion mechanism 31; wherein, when the first bobbin module 501 can be mounted to the bobbin module motion mechanism 31, the third transmission member 3132 of the third motion module 313 passes through the bobbin shaft 522 of the first bobbin module 501, such that the positioning protrusion 3152a of the limiting assembly 315 enters positioning groove 3152b of the limiting assembly 315 to restrict the bobbin case 52 of the first bobbin module 501 from rotating about the motion axis L.
  • the first jaw driver 234 of the first jaw assembly 23 drives the first clamping portion 233a of the first movable jaw 233 to move away from the latch clip 3151b disposed in the first bobbin module 501; the latch clip 3151b disposed in the first bobbin module 501 rebounds to make the latch 3151c snapped fit into the annular groove 3151a of the limiting assembly 315 to restrict bobbin case 52 of the second bobbin module 502 having movement along the motion axis L.
  • the movement driving source 211 of the bobbin module moving assembly 21 generates moving power to drive the movable frame 22 to move away from the rotary hook 12, and now, the first jaw assembly 23 and the second jaw assembly 24 respectively do not hold the bobbin module 501 and the second module 502, so that both the first jaw assembly 23 and the second jaw assembly 24 wait for the next action of holding the bobbin module 50.
  • the bobbin 51 of the first bobbin module 501 is close to the connection plate 3112a of the first transmission member 3112. At this time, the bobbin 51 may be in a freely rotatable state.
  • the first transmission member 3112 drives the bobbin 51 to rotate clockwise, so that the guiding module 441 of the two magnets 4411 are magnetically attracted to each other to allow the bobbin 51 of the first bobbin module 501 to rotates about the motion axis L; besides, the bump 4421 of the alignment mechanism 44 is engaged with the positioning groove 4422 of the alignment mechanism 44 to limit the relative angular position between the bobbin 51 of the first bobbin module 501 and the first transmission member 3112; and when the first transmission member 3112 rotates for several turns and then stopped to being angularly positioned, the through space 514 of the first bobbin module 501 can be directly located above the spool member 511; besides, when the first transmission member 3112 rotates, the bobbin 51 of the first bobbin module 50 can rotate via the first transmission member 3112, and the partial bobbin thread 60 between the housing 521 and the clamping elastic piece 528 as well as the partial bobbin thread 60 exposed outside the thread guiding hole 526 can
  • the bobbin 51 has two through spaces 514; the two through spaces 514 are spaced by 180°; and both the alignment mechanism 44 and the through space 514 are formed symmetrically by 180°. Therefore, the bobbin 51 has two angles for positioning.
  • the third driving source 3131 of the third motion module 313 drives the third transmission member 3132 of the third motion module 313 to move along the motion axis L, so that the synchronization protruding pillar 3142 of the synchronization module 314 can move toward the end portion of the synchronization groove 3141; such that, the moving third transmission member 3132 can drive the bobbin case 52 of the first bobbin module 501 to be axially separated from the bobbin 51 of the first bobbin module 501, so that the bobbin case 52 of the first bobbin module 501 and the bobbin 51 of first bobbin module 501 show a separated state S1, where they are separated from each other.
  • the cutting driving source 421 of the thread cutting mechanism 42 drives the cutter 422 of the thread cutting mechanism 42 to rotate, and the suction mechanism 43 starts to operate for generating the suction airflow A.
  • the movable driving source 411 of the movable mechanism 41 drives the movable arm 412 of the movable mechanism 41 to swing, so that cutting driving source 421, the cutter 422, and the suction mechanism 43 simultaneously swing downward, thereby making the rotating cutter 422 move to a cutting position C to cut off the residual bobbin thread 60 inside the winding space 513.
  • the suction port 431 of the suction mechanism 43 would be located on the side of the bobbin 51, so that the suction airflow A of the suction mechanism 43 can remove the bobbin thread 60 cut off by the cutter 422.
  • the alignment mechanism 44 can restrict the through space 514 of the first bobbin module 501 to directly above the spool member 511, the through space 514 can be aligned with the cutter 422 located at the cutting position C through the alignment mechanism 44 when the cutter 422 is at the cutting position C; such that, the cutter 422 not only can enter the through space 514 to ensure that the cutter 422 can truly cut off the bobbin thread 60, but also surely not interfere with the spool member 511.
  • the movable driving source 411 of the movable mechanism 41 drives the movable arm 412 of the movable mechanism 41 to swing upward, so that the cutting driving source 421, the cutter 422 and the suction mechanism 43, three are away from the bobbin 51; wherein, when the cutter 422 just leaves the through space 514 of the bobbin 51, the first transmission member 3112 of the first motion module 311 can drive the bobbin 51 to rotate to enhance the effect of suctioning the residual bobbin thread 60 by suction mechanism 43; accordingly, the bobbin 51 of the first bobbin module 501 shows an initial state S2 of not being wound with the bobbin thread 60, that is, the work of removing the bobbin thread 60 is completed.
  • the movable arm 412 of the suction mechanism 43 assembled to the movable mechanism 41 is only for convenience of explanation, that is, the suction mechanism 43 can be assembled to the fixing frame 14 of the sewing machine body 10; accordingly, when the movable arm 412 swings, the suction mechanism 43 does not swing as the movable arm 412.
  • the suction port 431 of the suction mechanism 43 is located below the bobbin 51, and the appearance of the suction port 431 shows a funnel, whereby when the cutter 422 is at the cutting position C to cut off the bobbin thread 60, the suction mechanism 43 can receive the bobbin thread 60 that naturally falls after cut off by the cutter 422, and thus the bobbin thread 60 is taken away from the bobbin 51 by the suction airflow A.
  • the cutting transmission member 423 of the thread cutting mechanism 42 is connected to an air pressure source (not shown in the figure) capable of generating airflow, wherein the cutting transmission member 423 is provided with a plurality of air blowing holes 423a close to the cutter 422. Accordingly, when the cutter 422 is at the cutting position C to cut off the bobbin thread 60, the air pressure source generates blown airflow B flowing out of the air blowing holes 423a to prevent the cut bobbin thread 60 from being wound around the cutting transmission member 423.
  • the work of winding bobbin thread 60 starts.
  • the first driving source 3111 of the first motion module 311 generates rotational power to drive the first driving belt pulley 3113a of the first interlocking module 3113 to rotate, so that the first belt 3113c of the first interlocking module 3113 drives the first transmission member 3112 to rotate about the motion axis L through the first driven belt pulley 3113b of the first interlocking module 3113, so that the bobbin thread 60 inside the clamping space 3314 starts to rotate with the first transmission member 3112, and accordingly the bobbin 51 of the first bobbin module 501 synchronously rotates to bring the bobbin thread 60 into the winding space 513 of the bobbin 51.
  • the bobbin 51 of the first bobbin module 501 is wound with the bobbin thread 60. Since the outer diameter of the first winding portion 511a of the first bobbin module 501 is smaller than the outer diameter of the second winding portion 511b of the first bobbin module 501, the bobbin thread 60 first is wound around the first winding portion 511a of the bobbin 51 to ensure that the bobbin thread 60 first covers the through space 514 of the first bobbin module 501; accordingly, the residual bobbin thread 60 on the bobbin 51 of the first bobbin module 51 after sewing operation also remains in the first winding portion 511a, and thus the cutter 422 of the thread cutting mechanism 42 at the cutting position C can truly cut off bobbin thread 60.
  • the adjustment driving source 342 of the bobbin thread control mechanism 34 drives the adjustment member 341 of the bobbin thread control mechanism 34 to swing, so that the through hole 3412a of the adjustment member 341 restricts the bobbin thread 60 more to the connection plate 3112a.
  • the adjustment driving source 342 When the bobbin thread 60 is wound around the first winding portion 511a for up to a certain number of turns (for example, 10 turns or 20 turns), the adjustment driving source 342 then drive the adjustment member 341 to make through hole 3412a not restrict the bobbin thread 60 from shifting, and accordingly the bobbin thread 60 is evenly wound around the spool member 511 of the bobbin 51.
  • a certain number of turns for example, 10 turns or 20 turns
  • the release driving source 332 of the thread releasing mechanism 33 also drives the release lever 331 of the thread releasing mechanism 33 to swing, so that the pushing portion 3312 of the release lever 331 pushes against the lower end of the connecting portion 3112d of the blade 3112b (as shown in FIG. 16F ) to release the bobbin thread 60, so that the end of the bobbin thread 60 inside the clamping space 3314 loose and wound into the winding space 513 at the same time.
  • the release driving source 332 drives the pushing portion 3312 to move away from the connection plate 3112a, such that the blade 3112b through its own elastic force makes the edge portion 3112c be in contact with the connection plate 3112a; subsequently, when the bobbin 51 of the first bobbin module 501 is wound with the bobbin thread 60 for up to a preset number of turns, inside of the winding space 513 of the first bobbin module 501 has been fully wound with the bobbin thread 60, and at this time, the first driving source 3111 of the first motion module 311 stops rotating.
  • the adjustment driving source 342 of the bobbin thread control mechanism 34 needs to drive the adjustment member 341 of the bobbin thread control mechanism 34 to swing about the pivoting shaft 3411, so that the adjustment plate 3412 of the adjustment member 341 be in contact against the bobbin thread 60 located between the thread gripper 15 and the bobbin 51, and accordingly the through hole 3412a of the adjustment plate 3412 restricts the bobbin thread 60 located between the thread gripper 15 and the bobbin 51 to be close to the clamp module 323.
  • adjustment driving source 342 drives the adjustment member 341 to swing before stopping the winding the bobbin thread 60, so that the adjustment plate 3412 be in contact against the bobbin thread 60 between the thread gripper 15 and the bobbin 51; Accordingly, the bobbin thread 60 positioned between the wire gripper 15 and the bobbin 51 is restricted to be close to the clamp module 323, so that the bobbin thread 60 finally wound around the bobbin 51 can be on the moving path of the clamp module 323.
  • the first movable jaw driving source 3211 of the first moving module 321 drives the first jaw transmission member 3212 of the first moving module 321 to extend outward, and the clamp module 323 of the bobbin thread clamping mechanism 32 is driven by the first jaw transmission member 3212 to move to a clamping position P2 from a first preparatory position P1 (as shown in FIG. 16A ) along a first path D1 (as shown in FIG. 16D ) intersecting the motion axis L, so that the bobbin thread 60 between the bobbin 51 and the thread gripper 15 be positioned between the movable clamp 3231 and the fixed clamp 3232.
  • the guide wheel 3244 of the avoidance unit 324 is continuously in contact with the curved guide rail 3242a of the assembling plate 3242 through the holding force 3245a of the holding member 3245; such that, when the guide wheel 3244 moves from one end of the curved guide rail 3242a to the other end of the curved guide rail 3242a, the swinging plate 3241 of the avoidance unit 324 drives the first moving module 321 and the clamp module 323 to swing in a counterclockwise path, which further changes the relative position between three portions (the first moving jaw driving source 3211, the first jaw transmission member 3212 and the clamp module 323) and the first bobbin module 501 to make the clamp module 323 avoid the bobbin 51 of the first bobbin module 501.
  • the clamp module 323 when moving along the first path D1 to the clamping position P2, the clamp module 323 is not in contact with the bobbin 51 of the first bobbin module 501 through the avoidance unit 324. Please refer to FIG. 16D .
  • the stop pin 3231b of the movable clamp 3231 may be in contact against the bobbin thread 60 between the bobbin 51 and the thread gripper 15.
  • the stop pin 3231b can restrict a local length of the bobbin thread 60 to between the movable clamp 3231 and the fixed clamp 3232, thereby ensuring the relative position relationship between the bobbin thread 60 and the clamp module 323 when the clamp module 323 clamp the bobbin thread 60.
  • the clamp driving source 3233 of the clamp module 323 drives the movable clamp 3231 of the clamp module 323 to swing, so that the movable clamp 3231 can move close to the fixed clamp 3232 of the clamp module 323, and thus makes the movable clamp 3231 and the fixed clamp 3232 at a position near the adjustment member 341 clamp the bobbin thread 60 that is located between the bobbin 51 and the thread gripper 15.
  • the clamping block 3232a of the fixed clamp 3231 moves into the clamping groove 3231a, so that the clamping groove 3231a and the clamping block 3232a are in a close contact state, so that the clamping groove 3231a and the clamping block 3232a clamp bobbin thread 60 to prevent the bobbin thread 60 from being separated from the clamp module 323, and makes the clamping groove 3231a and the clamping block 3232a together clamp a local length of the bobbin thread 60.
  • the bobbin thread 60 is divided into wound bobbin thread 61 between the bobbin 51 and the clamp module 323, as well as the remaining portion of the bobbin thread 60 set as source bobbin thread 62 assembled to the thread gripper 15.
  • the first movable jaw driving source 3211 of the first moving module 321 drives the first jaw transmission member 3212 of the first moving module 321 to move backward, and the clamp module 323 of the bobbin thread clamping mechanism 32 is driven by the first jaw transmission member 3212 to back to the first preparatory position P1 from the clamping position P2 along the first path D1, so that the source bobbin thread 62 pass under the bobbin 51 of the first bobbin module 501.
  • the release driving source 332 of the thread releasing mechanism 33 drives the release lever 331 of the thread releasing mechanism 33 to swing, so that the pushing portion 3312 of the release lever 331 pushes against the lower end of the connecting portion 3112d of the blade 3112b, and thus the edge portion 3112c of the blade 3112b is away from the connection plate 3112a to allow the clamping space 3314 to show an open state in which the bobbin thread 60 enters.
  • the first driving source 3111 of the first motion module 311 drives the first transmission member 3112 to rotate clockwise through the first interlocking module 3113, so that the source bobbin thread 62 passes through the interior of the clamping space 3314.
  • the release driving source 332 drives the release lever 331 to swing, so that the pushing portion 3312 of the release lever 331 be away from the lower end of the connecting portion 3112d of the blade 3112b; accordingly the blade 3112b through its own elastic force makes the edge portion 3112c of the blade 3112b and the connection plate 3112a together clamp the source bobbin thread 62 (as shown in FIG. 16F ) to wait for the next action of winding the bobbin thread 60.
  • the second movable jaw driving source 3221 of the second moving module 322 drives the second jaw transmission member 3222 of the clamp module 323 to make a first-stage moving travel, so that both the first moving module 323 and the clamp module 323 are driven to move by the second jaw transmission member 3222, and thus the clamp module 323 moves from the first preparatory position P1, along a second path D2 intersecting the first path D1, to a first guiding position P3; and when the clamp module 323 is at the first guiding position P3, the source bobbin thread 62 would touch the edge portion 3112c of the blade 3112b. Subsequently, as shown in FIGS.
  • the first driving source 3111 of the first moving module 311 through the first interlocking module 3113 drives the first transmission member 3112 to rotate counterclockwise about the motion axis L, so that the blade 3112b is driven by the first transmission member 3112 to cut off the source bobbin thread 62.
  • the end of the source bobbin thread 62 is clamped by the blade 3112b, while the end of the wound bobbin thread 61 is clamped by the clamp module 323.
  • that the bobbin case 52 is axially separated away from bobbin 51 is for convenience of explanation.
  • the relative distance between the bobbin case 52 and the bobbin 51 should be substantially shown as the separated state S1 of FIG. 15A .
  • the bobbin 51 is moved out of the connection plate 3112a.
  • the clamp module 323 in order to prevent the clamp module 323 from moving along the first path D1, the clamp module 323 would interfere with the connection plate 3112a and the blade 3112b; the first motion module 311 can drive the connection plate 3112a and the blade 3112b to rotate, so that the blade 3112b rotate to an angle to avoid the clamp module 323, but not limited to the angle shown in the figure.
  • the wound bobbin thread 61 starts to be installed on the bobbin case 52 of the first bobbin module 501.
  • the third driving source 3131 of the third motion module 313 drives the third interlocking module 3133 move away from the third transmission member 3132; the restoring force 3134a of the returning member 3134 acts on the pressing block 3132a, so that the third transmission member 3132 can move toward the third driving source 3131, and thus the moving third transmission member 3132 can make the bobbin case 52 of the first bobbin module 501 assembled to the bobbin 51 of the first bobbin module 501; accordingly, both the bobbin case 52 of the first bobbin module 501 and the bobbin 51 of the first bobbin module 501 are transformed from the separated state S1 into an assembled state S3 of being assembled to each other.
  • the wound bobbin thread 61 is in contact with the open end 524 of the bobbin case 52, making the wound bobbin
  • the second driving source 3121 of the second motion module 312 When the wound bobbin thread 60 is in contact with the open end 524 of the bobbin case 52, the second driving source 3121 of the second motion module 312 generates rotational power to drive the second driving belt pulley 3123a of the second interlocking module 3123 to rotate, so that the second belt 3123c of the second interlocking module 3123 drives the second transmission member 3122 to rotate about the motion axis L via the second driven belt pulley 3123b of the second interlocking module 3123; when the second transmission member 3122 rotates, the synchronization protruding pillar 3142 of the synchronization module 314 cannot be moved by the limitation of the synchronization groove 3141, so that the second transmission member 3122 through the synchronization module 314 drives the third transmission member 3132 of the third motion module 313 to rotate, and thus the bobbin case 52 of the first bobbin module 501 rotates synchronously.
  • the second driving source 3121 first drives the bobbin case 52 of the first bobbin module 501 to rotate clockwise through the second transmission member 3122, and then the second driving source 3121 drives the bobbin case 52 of the first bobbin module 501 to rotate counterclockwise; accordingly, the rotating bobbin case 52 can guide the wound bobbin thread 61 into the thread guiding slot 527 of the bobbin case 52, so that a local length of the wound bobbin thread 61 located between the housing 521 of the bobbin case 52 and the clamping elastic piece 528 of the bobbin case 52.
  • the second movable jaw driving source 3221 of the second moving module 322 drives the second jaw transmission member 3222 of the clamp module 323 to make a second stage moving travel, so that both the first moving module 321 and the clamp module 323 are driven by the second transmission member 3222 to move in a direction away from the connection plate 3112a, so that the clamp module 323 moves from the first guiding position P3 to a second preparatory position P4 along a third path D3 parallel to the second path D2.
  • the second movable jaw driving source 3221 of the second moving module 322 drives the second jaw transmission member 3222 of the clamp module 323 to make a second stage moving travel, so that both the first moving module 321 and the clamp module 323 are driven by the second transmission member 3222 to move in a direction away from the connection plate 3112a, so that the clamp module 323 moves from the first guiding position P3 to a second preparatory position P4 along a third path D3 parallel to the second path D2.
  • the first jaw transmission member 3212 of the first moving module 321 touches the roller 3243 of the avoidance unit 324, so that the swing plate 3241 of the avoidance unit 324 swing, thereby the guide wheel 3244 of the avoidance unit 324 is separated from the curved guide rail 3242a.
  • the clamp module 323 of the bobbin thread clamping mechanism 32 pulls the wound bobbin thread 61, so that the wound bobbin thread 61 introduced into the guiding opening 528a of the clamping elastic piece 528, and thus the clamping elastic piece 528 can guide the wound bobbin thread 61 to the thread guiding hole 526 from the thread guiding slot 527.
  • the first movable jaw driving source 3211 of the first moving module 321 again drives the first jaw transmission member 3212 of the first moving module 321 to extend outward, so that the first jaw transmission member 3212 drives the clamp module 323 to move from the second preparatory position P4 to a second guiding position P5 along a fourth path D4 parallel to the first path D1; wherein, during the movement process of the clamp module 323 toward the second guiding position P5, the wound bobbin thread 61 first touches the hook arm 529 of the bobbin case 52, and then the wound bobbin thread 61 pushes against the elastic arm 530a of the thread blocking piece 530, so that the elastic arm 530a deform, such that the wound bobbin thread 61 is guided into the thread hole 529a of the hook arm 529.
  • the wound bobbin thread 61 is guided to the inside of the thread hole 529a of the hook arm 529, and the clamp driving source 3233 of the clamp module 323 drives the movable clamp 3231 of the clamp module 323 to swing; so that, the movable clamp 3231 is away from the fixed clamp 3232 of the clamp module 323, and thus the clamp module 323 releases the end of the wound bobbin thread 61.
  • the clamp module 323 moves back to the first preparatory position P1 from the second guiding position P5 through the first moving module 321 and the second moving module 322, so that the clamp module 323 waits to mount the bobbin thread 60 to the bobbin case 52.
  • the difference from the first preferred embodiment is the manner of assembly among the first motion module 311, the second motion module 312, the third motion module 313, and the synchronization module 314.
  • the second transmission member 3122 of the second motion module 312 is movably disposed through the first transmission member 3112 of the first motion module 311, the second interlocking module 3123 of the second motion module 312 is configured as a single hollow shaft, and the third transmission member 3132 is movably assembled to the outer circumference of the second interlocking module 3123 and assembled to the second transmission member 3122 through the synchronization protruding pillar 3142 of the synchronization module 314; wherein, the first transmission member 3112 and the third transmission member 3132 are respectively located on opposite sides of the second transmission member 3122.
  • the third interlocking module 3133 of the third movement module 313 is arranged with an interlocking rack 3133a that can drive the axial displacement of the third transmission member 3132, and an interlocking gear 3133b assembled to the third driving source 3131; the interlocking rack 3133a is engaged with the interlocking gear 3133b.
  • the synchronization groove 3141 of the synchronization module 314 is formed in the second interlocking module 3123, so that the synchronization groove 3141 being an elongated form, and thus the synchronization protruding pillar 3142 is simultaneously disposed through the third transmission member 3132, the second interlocking module 3123, and the second transmission member 3122.
  • the second driving source 3121 of the second motion module 312 when the second driving source 3121 of the second motion module 312 generates rotational power, the second driving source 3121 drives the second transmission component 3122 to rotate relative to the first transmission component 3112. At this time, the synchronization protruding pillar 3142 of the synchronization module 314 would not be affected by the first transmission member 3112 to rotate, and the synchronization groove 3141 of the synchronization module 314 synchronously rotates with the second transmission member 3122. Furthermore, the third driving source 3131 of the third motion module 313 generates rotational power, and the interlocking gear 3133b of the third interlocking module 3133 drives the interlocking rack 3133a of the third interlocking module 3133 to move; accordingly the third transmission member 3132 moves along the motion axis L.
  • the third transmission member 3132 moves, the synchronization protruding pillar 3142 of the synchronization module 314 moves along the synchronization groove 3141 of the synchronization module 314, so that the third transmission member 3132 drives the entire second transmission module 3122 to move axially through the synchronization module 314.
  • the difference from the second preferred embodiment is that the bobbin module motion mechanism 31 has no synchronization module 314 and the third transmission member 3132 of the third motion module 313; the second driving source 3121 configured as a plate member and assembled to the second motion module 312 makes the third transmission member 3132 not coaxially disposed on the movement axis L; wherein, when the third driving source 3131 of the third motion module 313 drives the third transmission member 3132 to move along the axis direction of the motion axis L, the second motion module 312 as a whole (including the second driving source 3121, the second transmission member 3122 and the second interlocking module 3123) simultaneously moves along the motion axis L, so that the bobbin case 52 moves to be separated from the bobbin 51.
  • the third transmission member 3132 may be directly connected to the third driving source 3131. However, the third transmission member 3132 may also be connected to the third driving source 3131 via the third interlocking module 3133.
  • the third transmission member 3132 is assembled to the second driving source 3121 is for convenience of description, that is, the third transmission member 3132 can be assembled to the first driving source 3111 of the first motion module 311, and thus the entire first motion module 311 (including the first driving source 3111, the first transmission member 3112 and the first interlocking module 3113) can simultaneously move along the motion axis L when the third transmission member 3132 moves along the motion axis L through the third driving source 3131, so that the bobbin 51 can move to be separated from the bobbin case 52.
  • the clamp module 323 of the bobbin thread clamping mechanism 32 can temporarily clamp the source bobbin thread 62, and then, the release driving source 332 of the thread releasing mechanism 33 drives the release lever 331 of the thread releasing mechanism 33 to swing, so that the pushing portion 3312 of the release lever 331 pushes against the lower end of the connecting portion 3112d of the blade 3112b, and thus the edge portion 3112c of the blade 3112b is further away from the connection plate 3112a to allow the clamping space 3314 to be in an open state.
  • the clamp module 323 is driven by the first moving module 321 and the second moving module 322 to make the source bobbin thread 62 be temporarily separated from the clamping space 3314.
  • the first and second moving modules 321, 322 drive the clamp module 323 to move, so that the source bobbin thread 62 returns to the interior of the clamping space 3314.
  • the release driving source 332 drives the release lever 331 to swing, so that the pushing portion 3312 of the release lever 331 being away from the lower end of the connecting portion 3112d of the blade 3112b, and thus the blade 3112b through its own elastic force to make the edge portion 3112c of the blade 3112b and the connecting plate 3112a collectively clamp the source bobbin thread 62.

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  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP19219696.2A 2019-07-10 2019-12-24 Spulenmodulbewegungsmechanimus Withdrawn EP3763864A1 (de)

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CN113622104A (zh) * 2021-09-15 2021-11-09 深圳超诚缝纫科技有限公司 一种梭芯自动绕线装置

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JPH08155178A (ja) * 1994-12-07 1996-06-18 Juki Corp ミシンの下糸巻回装置
JPH09117580A (ja) * 1995-10-24 1997-05-06 Juki Corp ボビン、ボビンケース分離装置
CN108221203A (zh) * 2016-12-22 2018-06-29 杰克缝纫机股份有限公司 一种自动换梭芯装置及方法、缝纫机

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Publication number Priority date Publication date Assignee Title
JPH09117579A (ja) * 1995-10-24 1997-05-06 Juki Corp 糸掛け装置
JP5700609B1 (ja) * 2014-07-08 2015-04-15 木下精密工業株式会社 自動ボビン交換装置
TWI638923B (zh) * 2017-07-04 2018-10-21 啟翔股份有限公司 自動更換梭芯裝置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08155178A (ja) * 1994-12-07 1996-06-18 Juki Corp ミシンの下糸巻回装置
JPH09117580A (ja) * 1995-10-24 1997-05-06 Juki Corp ボビン、ボビンケース分離装置
CN108221203A (zh) * 2016-12-22 2018-06-29 杰克缝纫机股份有限公司 一种自动换梭芯装置及方法、缝纫机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113622104A (zh) * 2021-09-15 2021-11-09 深圳超诚缝纫科技有限公司 一种梭芯自动绕线装置

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TW202102738A (zh) 2021-01-16
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JP2021013718A (ja) 2021-02-12
TWI760627B (zh) 2022-04-11

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