JP2021013716A - Remaining bobbin-thread removal device and sewing machine using it - Google Patents

Abstract

To provide a sewing machine capable of shortening an operational time necessary for cleaning a bobbin by automatically removing a bobbin thread, which is wound around the bobbin.SOLUTION: A remaining bobbin-thread removal device according to the present invention is used for a sewing machine and includes a movable arm 412, a cutter 422, and a suction mechanism 43. The movable arm is coupled to the cutter, and the movable arm can be moved, thereby the cutter can move into a winding space of a bobbin via the movable arm and the cutter can cut a bobbin thread located in the winding space. The suction mechanism performs a removal operation of the bobbin thread cut by the cutter and presents an initial state in which the bobbin thread is not wound around the bobbin. Thereby, after an outer pot is removed from the sewing machine through a sewing work, the movable arm, the cutter, and the suction mechanism can work together to remove a bobbin thread remaining in the bobbin and to increase the working efficiency of the sewing machine by reducing the operational time for cleaning the bobbin.SELECTED DRAWING: Figure 12

Description

The present invention relates to a removing device used for a sewing machine bobbin, and more particularly to a residual bobbin thread removing device capable of completely separating the bobbin thread remaining on the bobbin from the bobbin.

In the case of a sewing machine that sews on the lock stitch principle, whether a full-rotation outer pot or a half-turn inner pot is used, both have a bobbin around which bobbin thread can be wound and lock. Most sewing machines that sew on the principle of stitching have a bobbin case that can accommodate the bobbin.

However, in order to improve the rotation speed of the sewing machine, the capacity of the bobbin to accommodate the bobbin thread must not be excessive, and the length of the bobbin thread is relatively limited, so that the bobbin thread is used up. It is necessary to replace the bobbin frequently to prevent the bobbin, and in the bobbin thread replacement work, not only the sewing machine sewing work must be stopped, but also the bobbin thread is manually replaced by the operator. It is necessary and the production efficiency cannot be improved relatively.

To overcome the above drawbacks, there are now automatic bobbin changers in the sewing machine industry. When it is detected that the bobbin thread wound around the bobbin is about to be exhausted, the automatic bobbin replacement device simultaneously removes the bobbin case and the bobbin from the outer pot, and the bobbin case and the bobbin are all separated from the outer pot. A set of bobbin case and a bobbin full of bobbin threads are assembled to the outer pot at the same time to achieve the effect of automatically replacing the bobbin.

Even if some bobbins are left on the bobbin that is about to run out of bobbin thread, and the bobbin that is about to run out of bobbin thread can be separated from the outer pot by the automatic bobbin changing device. , The automatic bobbin changing device cannot cooperate with the operator to remove the bobbin thread remaining on the bobbin. Therefore, it is necessary to take an extra time to remove the bobbin thread remaining on the bobbin before the operator manually winds the bobbin thread around the bobbin again.

A main object of the present invention is that the bobbin thread wound around the bobbin can be automatically removed to shorten the work time for cleaning the bobbin, and the time for the operator to prepare the bobbin can be relatively reduced.

In order to realize the above object, the present invention relates to a residual bobbin thread removing device. In a preferred embodiment, the residual bobbin thread removing device is attached to a sewing machine and has a thread cutting mechanism, a moving mechanism, and a suction mechanism. Among them, the sewing machine has a sewing machine main body and a bobbin changing device, the sewing machine main body has an outer hook, the bobbin changing device is assembled to the sewing machine main body, and the bobbin is selectively used as the outer hook. It can be assembled in or separated from the outer pot.

The thread cutting mechanism has a cutter capable of cutting bobbin thread located in the winding space. The moving mechanism changes the position in which the cutter can be moved to move into the winding space, and the cutter can be positioned at the cutting position to cut the bobbin thread located in the winding space. It has a movable arm that makes it possible. Among them, the suction mechanism can form a suction airflow in the winding space to remove the bobbin thread cut by the cutter, and can exhibit an initial state in which the bobbin does not wind the bobbin thread.

In this embodiment, the thread cutting mechanism is connected to the movable arm, and the movable arm moves the cutter to move and move the cutter to the cutting position, and the cutter can be moved to rotate the thread. It also has a drive source. Further, a thread cutting transmission member connected to the cutter is assembled to the thread cutting drive source, and the thread cutting transmission member is provided with a blow hole capable of allowing a blown air flow to flow out.

The bobbin is provided with a drilling space recessed from the surface contour of the bobbin, and when the drilling space communicates with the winding space and the cutter is positioned at the cutting position, the cutter Accommodates a part. In a preferred embodiment, the bobbin has two position regulating plates arranged at intervals and a spool shaft located between the two position regulating plates, and the two position regulating plates and the spool shaft 3 The winding space is jointly formed between the persons, one of the two position-regulating plates recesses the position-regulating groove and the shaft groove, respectively, with the bobbin shaft, and the position-regulating groove is the shaft groove. The position regulating groove and the shaft groove jointly form the drilling space.

The residual bobbin thread removing device further has an alignment mechanism connected between the bobbin and the transmission member. When the bobbin is assembled to the transmission member, the alignment mechanism may align the drilling space with the cutter located at the cutting position so that the cutter can be inserted into the drilling space. it can.

The positioning mechanism has a guide component and a positioning component. The guide component can pull the distance between the bobbin and the transmission member so that the drilling space is close to the cutter located at the cutting position. When the drilling space is close to the cutter located at the cutting position via the guide component, the positioning component is located between the bobbin and the transmission member so that the bobbin cannot rotate with respect to the transmission member. The relative angular position of can be limited.

In the present invention, the movable arm of the moving mechanism moves the cutter to move it to the inside of the winding space, the cutter cuts the bobbin thread located in the winding space, and the bobbin thread is cut by the cutter and separated from the bobbin. It is characterized in that the suction mechanism can form a suction airflow in the winding space to remove the bobbin thread cut by the cutter. As a result, the residual bobbin thread removing device according to the present invention can cleanly remove the bobbin thread remaining on the bobbin, and the operator does not need to reconfirm whether or not there is residual bobbin thread on the bobbin. The bobbin thread removing device can not only reduce the work time for cleaning the bobbin, but also reduce the time for the operator to prepare the bobbin.

FIG. 1 is a perspective view of a first preferred embodiment of an automatic bobbin winder sewing machine.
FIG. 2 is an exploded view of the automatic bobbin winder sewing machine according to the first preferred embodiment.
FIG. 3A is an exploded view of the bobbin unit.
FIG. 3B is a schematic diagram of another embodiment of the bobbin unit.
FIG. 4 is an exploded view of the bobbin changing device in FIG.
FIG. 5 is an exploded view of the bobbin thread introduction device in FIG.
FIG. 6 is an exploded view of the motion mechanism of the bobbin unit in FIG.
FIG. 7 is a cross-sectional view of the motion mechanism of the bobbin unit.
FIG. 8 is a schematic view in which the bobbin case is attached to the third transmission member.
FIG. 9 is an exploded view of the bobbin thread clamp mechanism in FIG.
FIG. 10 is an exploded view of the pinching release mechanism in FIG.
FIG. 11 is an exploded view of the bobbin thread control mechanism in FIG.
FIG. 12 is an exploded view of the residual bobbin thread removing device in FIG.
FIG. 13 is a schematic view in which the bobbin is attached to the first transmission member.
FIG. 14A is a schematic view in which the movement mechanism of the outer hook and the bobbin unit are separately assembled to the bobbin unit.
FIG. 14B is a schematic view in which the movable frame moves in the direction closer to the outer hook.
FIG. 14C is a schematic view in which the first chuck component clamps the first bobbin unit.
FIG. 14D is a schematic view in which the second chuck component clamps the second bobbin unit.
FIG. 14E is a schematic view in which the movable frame moves in the direction away from the outer hook.
FIG. 14F is a schematic view in which the movable frame rotates clockwise.
FIG. 14G is a schematic view in which the movable frame approaches the outer hook again.
FIG. 14H is a schematic view in which the second chuck component loosens the second bobbin unit.
FIG. 14I is a schematic view in which the first chuck component is located directly in front of the motion mechanism of the bobbin unit.
FIG. 14J is a schematic view in which the positioning boss is inserted into the positioning groove.
FIG. 14K is a schematic view in which the latch tightening component clamps the ring groove.
FIG. 14L is a schematic view in which the bobbin of the first bobbin unit is connected to the first transmission member via the alignment mechanism.
FIG. 15A is a schematic view in which the bobbin case and the bobbin are separated.
FIG. 15B is a schematic view in which the cutter is located at the cutting position.
FIG. 15C is a schematic view of another embodiment of the suction mechanism.
FIG. 15D is a schematic partial cross-sectional view of FIG. 15C.
FIG. 16A is a schematic view in which the bobbin thread is wound around the bobbin.
FIG. 16B is a schematic view in which the bobbin thread control mechanism controls the position of the bobbin thread.
FIG. 16C is a schematic view in which the jig component moves to the clamp position.
FIG. 16D is a schematic view in which the jig component clamps the bobbin thread.
FIG. 16E is a schematic view in which the jig component moves to the first spare position.
FIG. 16F is a schematic view in which the pinching release mechanism clamps the bobbin thread.
FIG. 16G is a schematic view in which the jig component moves to the first guide position.
FIG. 16H is a schematic view in which the blade cuts the bobbin thread.
FIG. 17A is a schematic view in which the bobbin case and the bobbin are assembled.
FIG. 17B is a schematic view in which the winding bobbin thread is introduced into the thread guide groove.
FIG. 17C is a schematic view in which the jig component moves to the second spare position.
FIG. 17D is a schematic view in which the first jig transmission member comes into contact with the roller.
FIG. 17E is a schematic view in which the jig component moves to the second guide position.
FIG. 17F is a schematic view in which the winding bobbin thread is introduced into the perforation.
FIG. 18 is a schematic view of the motion mechanism of the bobbin unit in the second preferred embodiment.
FIG. 19 is a schematic view of the motion mechanism of the bobbin unit in the third preferred embodiment.

In order to more clearly and surely understand the structure, use and features of the present invention, preferred embodiments are given and detailed as follows with reference to the drawings.

See FIGS. 1 and 2. In the first preferred embodiment, the automatic bobbin thread winding sewing machine 1 according to the present invention is used in combination with the bobbin unit 50 (as shown in FIG. 3), the sewing machine main body 10, the bobbin changing device 20, and the bobbin thread. It has an introduction device 30 and a residual bobbin thread removing device 40. See FIG. The bobbin unit 50 has a bobbin 51 around which the bobbin thread 60 can be wound (as shown in FIG. 14A) and a bobbin case 52 that can be assembled to the bobbin 51. The bobbin 51 is provided with a spool shaft 511 and two position control plates 512, a part of the spool of the spool shaft 511 is used as the first spool portion 511a, and the remaining segment of the spool shaft 511 is wound with the first spool. The second thread winding portion 511b is larger than the portion 511a. Among them, the two position restricting plates 512 are arranged at intervals, and are formed on the first thread winding portion 511a and the second thread winding portion 511b, respectively, so that the thread winding shaft 511 is positioned between the two position regulating plates 512. Further, a winding space 513 (as shown in FIG. 14A) capable of accommodating the bobbin 60 is jointly formed between the bobbin winding shaft 511 and the two position restricting plates 512. As shown in the figure, the bobbin shaft 511 is recessed with a shaft groove 511c communicating with the winding space 513, and one position regulating plate 512 is recessed with a position regulating groove 512a communicating with the winding space 513. By communicating the groove 511c with the position regulating groove 512a, the shaft groove 511c and the position regulating groove 512a jointly form a drilling space 514 formed recessed from the surface contour of the bobbin 51. However, the fact that the bobbin 51 thread winding shaft 511 has the first thread winding portion 511a and the second thread winding portion 511b is merely for convenience of explanation, and as shown in FIG. 3B, the position is located outside the thread winding shaft 511. The regulation flange 511d is extended, and the position regulation flange 511d is close to the position regulation plate 512 on which the position regulation groove 512a is formed.

As shown in FIG. 3A, the bobbin case 52 has a case 521 that is in a hollow state, a hook shaft 522 that is in a hollow state is provided inside the case 521, and a closed end 523 and an open end 524 are provided at both ends facing each other. Are formed, and a storage space 525 capable of accommodating the bobbin 51 is formed between the inner edge of the case 521 and the outer edge of the hook shaft 522. In particular, in the case 521, a thread guide hole 526 communicating with the accommodation space 525 is formed through, and a thread guide groove 527 communicating with the accommodation space 525 from the open end 524 to the closed end 523 is formed recessed. In this embodiment, the case 521 is assembled with a holding dome 528 capable of guiding the bobbin thread 60 (as shown in FIG. 17B) from the thread guide groove 527 to the thread guide hole 526, and the case 521 extends outward. The grab arm 529 is formed. Among them, a guide port 528a is provided on one side of the holding dome 528, and the grab arm 529 is recessed from the outer edge thereof to form a perforation 529a. Further, a wiper 530 capable of limiting the bobbin thread 60 (as shown in FIG. 17B) to the perforation 529a is attached to the closed end 523 of the case 521, and the wiper 530 may be elastically deformed to a position close to the perforation 529a. There is an elastic arm 530a that can be formed, and the elastic arm 530a is located on one side of the grab arm 529 to prevent the bobbin thread 60 from coming off the perforation 529a.

See FIG. 2 again. The sewing machine main body 10 has a pedestal 11 (only a part of the pedestal 11 is shown in the drawing), has a lower shaft (not shown) horizontally provided in the pedestal 11, and the lower shaft is in the pedestal 11. The outer pot 12 assembled to the above can be moved and rotated. Among them, a workbench 13 is provided above the pedestal 11, and the fixing bracket 14 and the yarn wrapper 15 connected to the fixing bracket 14 are connected.

See FIGS. 2 and 4. The bobbin changing device 20 is located in front of the outer hook 12, and has a bobbin unit moving component 21, a movable frame 22, a first chuck component 23, a second chuck component 24, and a bobbin unit rotating component 25. The bobbin unit moving component 21 is for moving the movable frame 22 to selectively approach the bobbin unit rotating component 25 or to move it away from the bobbin unit rotating component 25, and is a moving drive source 211 capable of generating moving power. It has a transmission bar 212 attached to the mobile drive source 211. In this embodiment, when the moving drive source 211 is connected to the movable frame 22 and the transmission bar 212 is fixed to the fixing bracket 14 of the sewing machine main body 10, the moving drive source 211 generates moving power. The entire 211 can be moved in the axial direction of the transmission bar 212, and the movable frame 22 can be moved closer to or away from the outer hook 12.

The movable frame 22 has a first connection end 221 and a second connection end 222 away from the first connection end 221. The movable drive source 211 is located between the first connection end 221 and the second connection end 222. It has a mounting portion 223 connected to. Among them, the first chuck component 23 has a first chuck connecting base 231 composed of two symmetrical plates, and the first chuck connecting base 231 is assembled with a fixed first fixed chuck 232. A first pivoted portion 231a is provided on the side away from the first fixed chuck 232, and the first fixed chuck 232 is fixedly connected to the first connection end 221 and can swing to the first pivoted portion 231a. 1 Movable chuck 233 is pivotally connected. Further, the first movable chuck 233 has a first clamp portion 233a (as shown in FIG. 14C), and a first chuck drive device 234 connected to the movable frame 22 at one end away from the first clamp portion 233a. Is assembled. Among them, the first clamp driving device 234 can move the first movable chuck 233 to reciprocate and swing, so that the first clamp portion 233a selectively approaches the first fixed chuck 232. Alternatively, it can be separated from the first fixed chuck 232.

The second chuck component 24 is connected to the second connection end 222 of the movable frame 22, and mainly has a second chuck connection base 241 having the same structural aspect as the first chuck connection base 231 and a first fixed chuck 232 having a structural aspect. The second fixed chuck 242, which is similar to the first movable chuck 243, the second movable chuck 243 (as shown in FIG. 14D), which has the same structural aspect as the first movable chuck 233, and the first chuck drive device 234, which has the same structural aspect as It is composed of a second chuck drive device 244. In addition to that, the connection method between the two of the second chuck connecting base 241 and the second fixed chuck 242, the second movable chuck 243 and the second chuck driving device 244 is the same as that of the first chuck component 23. The structural description of the second chuck component 24 will be omitted below.

The bobbin unit rotating component 25 has a rotation drive source 251 and a transmission unit 252. The rotary drive source 251 can generate rotational power and is fixed to the fixing bracket 14 of the sewing machine main body 10. The transmission unit 252 is located between the rotation drive source 251 and the transmission bar 212 of the bobbin unit moving component 21, and is meshed with the first transmission gear 252a and the first transmission gear 252a assembled to the rotation drive source 251. It has a second transmission gear 252b. In particular, when the rotational drive source 251 can generate rotational power by coaxially assembling the second transmission gear 252b to the transmission bar 212, the first transmission gear 252a and the second transmission gear 252b use the movable frame 22. It can be moved to rotate the transmission bar 212 around the axis. In addition, since the moving drive source 211 of the bobbin unit moving component 21, the first chuck component 23, and the second chuck component 24 are all connected to the movable frame 22, when the movable frame 22 is rotated, the first chuck component 23 And the second chuck component 24 rotates synchronously.

See FIGS. 2 and 5. The bobbin thread introduction device 30 is assembled to the fixing bracket 14 of the sewing machine main body 10, and has a bobbin unit movement mechanism 31, a bobbin thread clamp mechanism 32, a pinch release mechanism 33, and a bobbin thread control mechanism 34. See FIGS. 5-7. The motion mechanism 31 of the bobbin unit is mainly composed of a first movable part 311, a second movable part 312, a third movable part 313, and a synchronous part 314. As shown in the figure, the first movable component 311 has a first drive source 3111 and a first transmission member 3112. The first drive source 3111 is assembled to the fixing bracket 14 of the sewing machine main body 10, and can generate rotational power to move the first transmission member 3112 to rotate it. The first transmission member 3112 is provided on the motion axis L coaxially and parallel to the first transmission member 3112, and forms a connection plate 3112a at one end. Among them, the blade 3112b located under the connection plate 3112a is attached to the first transmission member 3112. The blade 3112b is made of an elastic material and has a blade portion 3112c (as shown in FIG. 10) located below the connection plate 3112a and a connection portion 3112d (as shown in FIG. 10) located behind the connection plate 3112a. And have. In this embodiment, the motion axis L overlaps the axis of the first transmission member 3112, and the first drive source 3111 is connected to the first transmission member 3112 via the first interlocking unit 3113. Among them, the first interlocking unit 3113 has a first drive pulley 3113a assembled to the first drive source 3111 and a first driven pulley 3113b assembled to the first transmission member 3112, and the first drive pulley 3113a A first belt 3113c connected to the first driven pulley 3113b is attached to the belt.

The second movable component 312 has a second drive source 3121, which can generate rotational power, and a second transmission member 3122, which is arranged on the first transmission member 3112 at intervals. The second drive source 3121 is assembled to the fixing bracket 14 of the sewing machine main body 10 and connected to the second transmission member 3122 via the second interlocking unit 3123, so that the second drive source 3121 is connected to the second interlocking unit 3123. The second transmission member 3122 can be moved and rotationally moved via the above. Since the second transmission member 3122 is coaxially provided on the first transmission member 3112, the axis of the second transmission member 3122 overlaps with the motion axis L. As shown in the figure, the second interlocking unit 3123 has a second drive pulley 3123a assembled to the second drive source 3121 and a second driven pulley 3123b assembled to the second transmission member 3122, and has a second drive. The pulley 3123a is connected to the second driven pulley 3123b via the second belt 3123c.

The third movable component 313 has a third drive source 3131 capable of generating moving power, and a third transmission member 3132 coaxially provided on the motion axis L. A third interlocking unit 3133 is attached to the third drive source 3131, and the third interlocking unit 3133 is moved away from the third transmission member 3132 or brought into contact with the third transmission member 3132 to cause the third transmission member 3132. Both ends penetrate the first transmission member 3112 and the second transmission member 3122, respectively. In addition, the third transmission member 3132 can be moved with respect to the first transmission member 3112 and the second transmission member 3122, so that the third transmission member 3132 can be movably assembled to the first transmission member 3112 and the second transmission member 3122. In this embodiment, when the third drive source 3131 releases the third interlocking unit 3133 and separates from the third transmission member 3132, the pressing block 3132a connected to the third transmission member 3132 and the second transmission member 3122 are jointly used. By pressing the reset urging member 3134 located between the second transmission member 3122 and the third transmission member 3132, the reset urging member 3134 is pressed like a spring and urges the pressing block 3132a. The reset urging force 3134a is formed. Since the reset urging force 3134a is smaller than the moving power of the third driving source 3131, the third driving source 3131 resets when it generates moving power to move the third interlocking unit 3133 and press it against the third transmission member 3132. By overcoming the reset urging force 3134a of the urging member 3134 and pushing the third transmission member 3132 to perform a linear motion along the movement axis L, the third transmission member 3132 is separated from the third drive source 3131. Become.

The synchronization component 314 is located between the second transmission member 3122 and the third transmission member 3132, and can rotate the second transmission member 3122 and the third transmission member 3132 at the same time. As shown, the synchronization component 314 has a synchronization groove 3141 formed in the second transmission member 3122 and a synchronization boss 3142 formed in the third transmission member 3132. The synchronization groove 3141 has a long shape, and the synchronization boss 3142 is bored in the synchronization groove 3141 so that when the third transmission member 3132 moves, the synchronization groove 3141 can move in the axial direction.

See FIG. The bobbin case 52 of the bobbin unit 50 is attached to the third transmission member 3132 of the third movable component 313, and the position regulating component 315 is provided between the bobbin case 52 and the third transmission member 3132. The position regulating component 315 has a movement prevention unit 3151 that can restrict the bobbin case 52 from being able to move in the axial direction with respect to the third transmission member 3132, and the bobbin case 52 cannot rotate with respect to the third transmission member 3132. It has a rotation prevention unit 3152 which can be restricted as described above. As shown in the figure, the movement prevention unit 3151 is provided with a ring groove 3151a, a latch tightening component 3151b, and a latch 3151c. The ring groove 3151a is formed in a part of the third transmission member 3132 that protrudes outward from the first transmission member 3112. The latch tightening component 3151b is pivotally attached to the latch 3151c and both are attached to the closed end 523 of the bobbin case 52. In this embodiment, the latch tightening component 3151b and the latch 3151c are components belonging to the bobbin case 52. In particular, when the bobbin case 52 is attached to the third transmission member 3132, the third transmission member 3132 penetrates the hook shaft 522 of the bobbin case 52, so that a part of the segment of the third transmission member 3132 becomes the bobbin case 52. It is possible to project outward from the closed end 523 of the bobbin case 52, and further, the latch 3151c is engaged with the ring groove 3151a so that the bobbin case 52 cannot move in the axial direction.

As shown, the rotation prevention unit 3152 has a positioning boss 3152a and a positioning groove 3152b. The positioning boss 3152a is formed in the third transmission member 3132 of the third movable component 313, and is arranged in the ring groove 3151a of the movement prevention unit 3151 at intervals. The positioning groove 3152b is formed on the hook shaft 522 of the bobbin case 52. Above all, when the bobbin case 52 is attached to the third transmission member 3132, the third transmission member 3132 penetrates the hook shaft 522 of the bobbin case 52 and moves the positioning boss 3152a into the positioning groove 3152b to move the bobbin. The case 52 is restricted so that it cannot rotate.

See FIG. The bobbin thread clamp mechanism 32 has a first moving part 321 and a second moving part 322, and a jig part 323. The first moving component 321 has a first moving jig drive source 3211 capable of carrying out a one-step moving stroke, and a first jig transmission member 3212 connected to the first moving jig driving source 3211. The first moving jig drive source 3211 and the first jig transmission member 3212 are jointly connected to the escape unit 324. The escape unit 324 can displace the first moving jig drive source 3211 and the first jig transmission member 3212 with respect to the second moving component 322. As a result, when the first moving jig drive source 3211 moves and moves the first jig transmission member 3212, the first moving jig drive source 3211 and the first jig transmission member 3212 pass through the escape unit 324. Displacement can be performed with respect to the second moving component 322.

In this embodiment, the escape unit 324 is assembled to the rocking plate 3241 assembled to the first moving jig drive source 3211, the assembling plate 3242 to be assembled to the second moving component 322, and the fixing bracket 14. It has a roller 3243 and. By pivotally connecting the swing plate 3241 to the assembly plate 3242, the rocking plate 3241 can swing with respect to the assembly plate 3242. An arch-shaped guide rail 3242a having a low center is recessed in the assembly plate 3242, and the arch-shaped guide rail 3242a comes into contact with the guide roller 3244 connected to the first jig transmission member 3212. Among them, a holder 3245 as a spring is provided between the swing plate 3241 and the assembly plate 3242. The holder 3245 can be jointly pressed by the rocking plate 3241 and the assembling plate 3242 to generate the holding urging force 3245a urged by the oscillating plate 3241, so that the oscillating plate 3241 is assembled via the holding urging force 3245a. It swings with respect to the attachment plate 3242. Further, as the guide roller 3244 moves toward the arched guide rail 3242a, the guide roller 3244 can continuously contact the arched idrail 3242a via the holding force 3245a of the holder 3245.

As shown in the figure, the second moving component 322 includes a second moving jig drive source 3221 capable of performing a two-step moving stroke and a second jig transmission member connected to the second moving jig driving source 3221. It has 3222 and. The second moving jig drive source 3221 is assembled to the fixing bracket 14 of the sewing machine main body 10, and the second jig transmission member 3222 is connected to the assembling plate 3242 of the second moving component 322. As a result, when the second moving jig drive source 3221 moves the second jig transmission member 3222, the entire first moving component 321 is moved by the second jig transmission member 3222 and moves as a whole. Further, the jig component 323 has a movable jig 3231 that is pivotally connected to the first jig transmission member 3212 and a fixing jig 3232 that is fixed to the first jig transmission member 3212. The movable jig 3231 is moved by a jig drive source 3233 attached to the first jig transmission member 3212, and the end of the movable jig 3231 is selectively close to the end of the fixing jig 3232, or the fixing jig It is possible to move away from the end of 3232 (as shown in FIG. 16A).

See FIG. The movable jig 3231 has a concave groove 3231a at the end, and the fixing jig 3232 has a clamp block 3232a at the end having a volume smaller than that of the concave groove 3231a. As shown in the figure, when the jig drive source 3233 moves and swings the movable jig 3231, the clamp block 3232a is inserted into the recessed groove 3231a by bringing the movable jig 3231 close to the fixing jig 3232. , The clamp block 3232a and the concave groove 3231a are in close contact with each other. In this embodiment, the movable jig 3231 is provided with a stop pin 3231b in the middle of the concave groove 3231a, and the fixing jig 3232 is formed with a pinhole 3232b recessed from the clamp block 3232a, and the clamp block 3232a and the concave groove are formed. When the 3231a is in close contact with the pinhole 3231b, the stop pin 3231b is inserted into the pinhole 3232b.

See FIGS. 5 and 10. The sandwiching release mechanism 33 has a release lever 331 and a release drive source 332. The release lever 331 has a pivoting portion 3311 that is pivotally connected to the fixing bracket 14, and is arranged on a connecting plate 3112a at both ends of the pivoting portion 3311 with a pushing portion 3312 and a release driving source 332. An urging portion 3313 to be connected is formed. A clamp space 3314 (as shown in FIG. 7) is provided between the blade portion 3112c of the blade 3112b and the connection plate 3112a. Among them, the release drive source 332 can generate power to move the urging portion 3313 to move the release lever 331 so that the release lever 331 swings around the pivot portion 3311 and further, the pushing portion 3312. Can selectively approach the rear side of the plate 3112a or move away from the rear side of the connection plate 3112a. Further, the pushing portion 3312 presses against the lower end of the connecting portion 3112d of the blade 3112b so that the blade portion 3112c is separated from the connecting plate 3112a and the clamp space 3314 is turned on so that the bobbin thread 60 can be inserted. See also FIGS. 5 and 11. The bobbin thread control mechanism 34 is located between the bobbin unit movement mechanism 31 and the yarn wrapper 15, and has an adjusting member 341 and an adjusting drive source 342. The adjusting member 341 has a pivoting shaft 3411 that is pivotally connected to the fixing bracket 14, and has an adjusting plate 3412 and a connecting rod 3413 at one end of the pivoting shaft 3411. Among them, a through hole 3412a is formed through a part of the adjustment plate 3412, and the connecting rod 3413 is connected to the adjustment drive source 342. Among them, the adjustment drive source 342 can generate power to move the adjustment member 341 to swing the pivot shaft 3411 around the axis.

See FIG. The residual bobbin thread removing device 40 is located on one side of the bobbin unit rotating component 25, and has a moving mechanism 41, a thread cutting mechanism 42, and a suction mechanism 43. The moving mechanism 41 has a moving drive source 411 that is assembled to the fixed bracket 14, and a movable arm 412 that is pivotally connected to the fixed bracket 14. The moving drive source 411 is connected to the movable arm 412, and the movable arm 412 can be moved to move and swing. The thread cutting mechanism 42 has a thread cutting drive source 421 assembled to the movable arm 412 and a cutter 422 that can be moved by the thread cutting drive source 421. A thread cutting transmission member 423 connected to the cutter 422 is assembled to the thread cutting drive source 421. Among them, the thread cutting drive source 421 can move and rotate the cutter 422 via the thread cutting transmission member 423, and the cutter 422 is located above the movement mechanism 31 of the bobbin unit. As shown, the suction mechanism 43 is connected to the movable arm 412, has a suction port 431, and can form a suction airflow A (as shown in FIG. 15B).

See FIG. The bobbin 51 of the bobbin unit 50 is attached to the first transmission member 3112 of the first movable component 311. An alignment mechanism 44 is provided between the bobbin 51 and the first transmission member 3112. When the bobbin 51 is assembled to the first transmission member 3112, the alignment mechanism 44 limits the position of the bobbin 51's piercing space 514 directly above the bobbin 51, and cuts the piercing space 514 by thread cutting. It can be brought close to the cutter 422 of the mechanism 42. As shown, the alignment mechanism 44 has a guide component 441 and a positioning component 442. The guide component 441 is two magnets 4411 and the positioning component 442 is a bump 4421 and a positioning groove 4422 that can be engaged with each other. As shown, the two magnets 4411 are assembled to the bobbin 51 and the first transmission member 3112, respectively, the bump 4421 is formed on the first transmission member 3112, and the positioning groove 4422 is formed on the bobbin 51. .. Above all, when the bobbin 51 is assembled to the first transmission member 3112, the bobbin 51 may exhibit a free state in which it can freely rotate. After that, the first transmission member 3112 moves and rotates the bobbin 51, the two magnets 4411 magnetically attract each other, attract the relative positions of the bobbin 51 and the first transmission member 3112, and the bump 4421 further forms a positioning groove. By engaging with the 4422 and limiting the relative angular position between the bobbin 51 and the first transmission member 3112, the bobbin 51 cannot rotate with respect to the first transmission member 3112. When the first transmission member 3112 stops rotating and positions the angle, the drilling space 514 is located directly above the bobbin 51 and can correspond to the cutter 422.

See FIG. 14A. When specifically used, the bobbin unit 50 wound by the bobbin thread 60 is assembled to each of the outer pot 12 of the sewing machine main body 10 and the bobbin unit movement mechanism 31 of the bobbin thread introduction device 30, and the outer pot 12 is used. The bobbin unit 50 assembled to the first bobbin unit 501 is referred to as a first bobbin unit 501, and the bobbin unit 50 assembled to the motion mechanism 31 of the bobbin unit is referred to as a second bobbin unit 502. In addition, the bobbin thread 60 provided in the sewing machine main body 10 is assembled to the yarn wrapper 15 of the sewing machine main body 10, and the bobbin thread 60 provided in the sewing machine main body 10 penetrates through the through hole 3412a of the bobbin thread control mechanism 34. A part of the segment of the bobbin thread 60 provided in the sewing machine main body 10 can be located inside the clamp space 3314 of the sandwiching release mechanism 33, and the blade portion 3112c of the blade 3112b and the connecting plate 3112a of the first transmission member 3112 are further formed. The bobbin thread 60 provided on the sewing machine body 10 is jointly clamped.

See FIG. 14B. When the sewing machine main body 10 performs sewing work and the remaining amount of the bobbin thread 60 of the first bobbin unit 501 is soon used up, the moving drive source 211 of the bobbin unit moving component 21 generates moving power to generate the bobbin unit moving component. The entire 21 moves along the transmission bar 212 and approaches the outer bobbin 12, and the movable frame 22 moves the first chuck component 23 and the second chuck component 24, respectively, below the outer bobbin 12 of the sewing machine main body 10. The bobbin unit of the thread introduction device 30 is brought close to the movement mechanism 31.

See FIGS. 14C and 14D. When the first chuck component 23 and the second chuck component 24 are close to the outer pot 12 of the sewing machine main body 10 and the bobbin unit motion mechanism 31 of the bobbin thread introduction device 30, respectively, the first fixed chuck 232 of the first chuck component 23 is It contacts the bobbin case 52 of the first bobbin unit 501, and the second fixed chuck 242 of the second chuck component 24 contacts the bobbin case 52 of the second bobbin unit 502. Next, the first chuck driving device 234 moves the first movable chuck 233 to swing it, so that the first clamp portion 233a of the first movable chuck 233 approaches the first fixed chuck 232, and further, the first clamp portion The 233a is engaged with the latch tightening component 3151b provided on the first bobbin unit 501. As a result, the first movable chuck 233 and the first fixed chuck 232 jointly clamp the first bobbin unit 501. At the same time, the second chuck driving device 244 moves and swings the second movable chuck 243, so that the second clamp portion 243a of the second movable chuck 243 comes close to the second fixed chuck 242, and further, the second bobbin. The second movable chuck 243 and the second fixed chuck 242 jointly clamp the second bobbin unit 502 by being engaged with the latch tightening component 3151b provided with the unit 502.

See FIGS. 14E and 14F. When the first chuck component 23 and the second chuck component 24 clamp the first bobbin unit 501 and the second bobbin unit 502, respectively, the moving drive source 211 of the bobbin unit moving component 21 generates moving power to generate the bobbin. The entire unit moving component 21 moves along the transmission bar 212 and separates from the outer hook 12. Further, the first chuck component 23 moves the first bobbin unit 501 to separate it from the outer hook 12 of the sewing machine main body 10, and at the same time, the second chuck component 24 moves the second bobbin unit 502 to move the bobbin unit of the bobbin thread introduction device 30. It is separated from the motor mechanism 31 of. As a result, the first chuck component 23 can separate the first bobbin unit 501 from the outer hook 12 via the bobbin unit moving component 21, and the second chuck component 24 also has the second chuck component 24 via the bobbin unit moving component 21. 2 The bobbin unit 502 can be separated from the bobbin unit movement mechanism 31.

After that, the rotary drive source 251 of the bobbin unit rotating component 25 generates rotational power, and the first transmission gear 252a of the transmission component 252 and the second transmission gear 252b of the transmission component 252 generate the transmission bar 212 of the bobbin unit moving component 21. The second bobbin unit 502 is located directly in front of the outer pot 12 so that the rotating transmission bar 212 can move the movable frame 22 and rotate it clockwise along the direction of the arrow in the drawing. ..

See FIGS. 14G and 14H. The moving drive source 211 of the bobbin unit moving component 21 generates moving power again, and the moving drive source 211 moves the movable frame 22 along the transmission bar 212 to bring it closer to the outer hook 12 of the sewing machine main body 10. The bobbin unit 502 is attached to the outer hook 12. After that, the second chuck drive device 244 of the second chuck component 24 moves the second clamp portion 243a of the second movable chuck 243 to separate it from the latch tightening component 3151b, so that the second bobbin unit 502 is securely attached to the outer hook 12. It can be assembled. In this case, the first chuck component 23 still clamps the first bobbin unit 501.

See FIGS. 14I, 14J and 14K. When the second bobbin unit 502 is assembled to the outer pot 12, the movable frame 22 of the bobbin changing device 20 is moved by the bobbin unit moving component 21 and the bobbin unit rotating component 25, and the first chuck component 23 is the bobbin of the introducing device. The first bobbin unit 501 can be attached to the bobbin unit's motion mechanism 31 in close proximity to the unit's motion mechanism 31. In particular, when the first bobbin unit 501 can be attached to the motion mechanism 31 of the bobbin unit, the third transmission member 3132 of the third movable part 313 is bored in the kettle shaft 522 of the first bobbin unit 501. The positioning boss 3152a of the position regulating component 315 is inserted into the positioning groove 3152b of the position regulating component 315, and the bobbin case 52 of the first bobbin unit 501 is restricted so as not to rotate about the motion axis L.

As shown, when the positioning boss 3152a of the position regulating component 315 is inserted into the positioning groove 3152b of the position regulating component 315 and engaged with each other, the first chuck driving device 234 of the first chuck component 23 is the first movable chuck. The first clamp portion 233a of the 233 is moved away from the latch tightening component 3151b provided on the first bobbin unit 501, the latch tightening component 3151b provided on the first bobbin unit 501 repels, and the latch 3151c is a position regulating component. It is clamped to the ring groove 3151a of 315 and is restricted so that the bobbin case 52 of the second bobbin unit 502 cannot move along the motion axis L.

After that, the moving drive source 211 of the bobbin unit moving component 21 generates moving power to move the movable frame 22 and separate it from the outer hook 12. In this case, the first chuck component 23 and the second chuck component 24 do not all perform the operation of sandwiching the first bobbin unit 501 and the second bobbin unit 502, respectively, so that the operation of waiting for the next bobbin unit 50 to be sandwiched is performed. To do.

See FIG. 14L. When the first bobbin unit 501 can be attached to the motion mechanism 31 of the bobbin unit, the bobbin 51 of the first bobbin unit 501 is close to the connection plate 3112a of the first transmission member 3112. In this case, the bobbin 51 may exhibit a free state in which it can rotate freely. After that, the first transmission member 3112 moves the bobbin 51 and rotates it in the clockwise direction, so that the guide parts 441 of the two magnets 4411 magnetically attract each other, and the bobbin 51 of the first bobbin unit 501 moves along the axis of motion. Rotate with L as the axis. In addition, 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 unit 501 and the first transmission member 3112. When the operation is stopped and the angle is positioned after the first transmission member 3112 has rotated a plurality of times, the piercing space 514 of the first bobbin unit 501 can be positioned directly above the spool shaft 511. When the first transmission member 3112 rotates, the bobbin 51 of the first bobbin unit 50 can rotate via the first transmission member 3112. For the subsequent thread cutting operation, the rotating bobbin 51 includes a part of the bobbin thread 60 located between the case 521 and the holding dome 528 and a part of the bobbin thread 60 exposed to the thread guide hole 526. It can be wound inside the bobbin case 52. In this embodiment, the bobbin 51 has two drilling spaces 514, the two drilling spaces 514 are spaced 180 ° apart, and the alignment mechanism 44 and the drilling space 514 are all 180 ° symmetrical. Make up. Therefore, the bobbin 51 has two angles that can be positioned.

See FIG. 15A. After neither the first chuck component 23 nor the second chuck component 24 clamps the bobbin unit 50, the bobbin thread 60 remaining in the first bobbin unit 501 begins to be removed. First, the third drive source 3131 of the third movable component 313 moves the third transmission member 3132 of the third movable component 313 to move along the motion axis L, so that the synchronous boss 3142 of the synchronous component 314 is formed in the synchronous groove 3141. The third transmission member 3132, which moves toward the end and further moves, moves the bobbin case 52 of the first bobbin unit 501 to be axially separated from the bobbin 51 of the first bobbin unit 501, and the first bobbin unit. It is possible to enter the separated state S1 in which the bobbin case 52 of 501 and the bobbin 51 of the first bobbin unit 501 are separated from each other.

See FIG. 15B. Next, the thread cutting drive source 421 of the thread cutting mechanism 42 moves and rotates the cutter 422 of the thread cutting mechanism 42, and the suction mechanism 43 starts operation so as to form a suction air flow A. After that, the moving drive source 411 of the moving mechanism 41 moves and swings the movable arm 412 of the moving mechanism 41, so that the thread cutting drive source 421, the cutter 422, and the suction mechanism 43 are synchronously directed downward. The rotating cutter 422 is moved to the cutting position C so as to swing and further cut the remaining bobbin thread 60 inside the winding space 513. When the bobbin thread 60 inside the winding space 513 is cut by the cutter 422, the suction port 431 of the suction mechanism 43 is located on the side side of the bobbin 51, so that the suction airflow A of the suction mechanism 43 is cut by the cutter 422. The cut bobbin thread 60 can be removed. As shown in the figure, the alignment mechanism 44 can be restricted so that the drilling space 514 of the first bobbin unit 501 is located directly above the spool shaft 511, and is drilled when the cutter 422 is located at the cutting position C. Since the space 514 can be aligned with the cutter 422 located at the cutting position C via the alignment mechanism 44, the cutter 422 can not only be inserted into the drilling space 514 to ensure that the bobbin thread 60 can be reliably cut. Further, it can be ensured that the thread winding shaft 511 does not interfere with the thread winding shaft 511. Next, the moving drive source 411 of the moving mechanism 41 moves the movable arm 412 of the moving mechanism 41 to swing upward, and separates the thread cutting drive source 421, the cutter 422, and the suction mechanism 43 from the bobbin 51. Among them, when the cutter 422 comes out of the bobbin 51's drilling space 514, the first transmission member 3112 of the first movable part 311 moves and rotates the bobbin 51 to remove the residual bobbin thread 60 by suction by the suction mechanism 43. The effect can be improved, and the bobbin 51 of the first bobbin unit 501 can exhibit the initial state S2 in which the bobbin thread 60 is not wound. Then, the work of removing the bobbin thread 60 is completed.

See FIG. 15C. The fact that the suction mechanism 43 is attached to the movable arm 412 of the moving mechanism 41 is for convenience of explanation only, that is, when the movable arm 412 swings, the suction mechanism 43 does not swing together with the movable arm 412. The pulling mechanism 43 can be attached to the fixing bracket 14 of the sewing machine body 10. As shown in the figure, the suction port 431 of the suction mechanism 43 is located below the bobbin 51, and the appearance of the suction port 431 has a hopper shape. As a result, when the cutter 422 is located at the cutting position C to cut the bobbin thread 60, the suction mechanism 43 can receive the bobbin thread 60 that naturally falls after being cut by the cutter 422, so that the bobbin thread 60 can be used. It is removed from the bobbin 51 by the suction airflow A.

See FIG. 15D. In a preferred embodiment, the thread cutting transmission member 423 of the thread cutting mechanism 42 is connected to an air pressure source (not shown) capable of generating airflow. Among them, the thread cutting transmission member 423 is provided with a plurality of blow holes 423a close to the cutter 422. Further, when the cutter 422 is located at the cutting position C to cut the bobbin thread 60, the air pressure source is a blow hole 423a so as to prevent the cut bobbin thread 60 from being wound around the thread cutting transmission member 423. The blowout airflow B flowing from is formed.

See FIG. 16A. After the removal of the bobbin thread 60 is completed, the work of winding the bobbin thread 60 is started. First, the first drive source 3111 of the first movable component 311 generates rotational power to move the first drive pulley 3113a of the first interlocking unit 3113 to rotate the first belt 3113c of the first interlocking unit 3113. The first transmission member 3112 is moved via the first driven pulley 3113b of the first interlocking unit 3113 to rotate the motion axis L about the axis, and the bobbin thread 60 located in the clamp space 3314 is moved together with the first transmission member 3112. Rotate. As a result, the bobbin 51 of the first bobbin unit 501 rotates synchronously and brings the bobbin thread 60 into the winding space 513 of the bobbin 51.

When the bobbin 51 of the first bobbin unit 501 starts winding the bobbin thread 60, the outer diameter of the first thread winding portion 511a of the first bobbin unit 501 is smaller than the outer diameter of the second thread winding portion 511b of the first bobbin unit 501. The bobbin thread 60 is first wound around the first thread winding portion 511a of the bobbin 51 so as to ensure that the borehole space 514 of the first bobbin unit 501 is first covered. Further, the bobbin 60 left after the bobbin 51 of the first bobbin unit 501 has passed through the sewing work also remains in the first thread winding portion 511a, so that the cutter 422 of the thread cutting mechanism 42 is lowered when it is located at the cutting position C. The thread 60 can be reliably cut. In a preferred embodiment, the adjustment drive source 342 of the bobbin control mechanism 34 is the bobbin control mechanism 34 in order to further ensure that the bobbin 60 is first wound around the first bobbin winding portion 511a when the bobbin winding operation is performed. By moving and swinging the adjusting member 341 of the above, the through hole 3412a of the adjusting member 341 is restricted so that the bobbin thread 60 is biased toward the connection plate 3112a. When the bobbin thread 60 winds around the first thread winding portion 511a and reaches a certain number of turns (for example, 10 or 20 turns), the adjustment drive source 342 moves the adjustment member 341 again, and the through hole 3412a shifts the bobbin thread 60. The bobbin thread 60 is all wound around the bobbin 51 thread winding shaft 511 without limiting. In addition, when the bobbin thread 60 winds around the first spool portion 511a and reaches a certain number of turns (for example, 10 or 20 turns), the release drive source 332 of the clamp release mechanism 33 also has the release lever 331 of the clamp release mechanism 33. By moving and swinging, the pushing portion 3312 of the release lever 331 is pressed against the lower end (as shown in FIG. 16F) of the connecting portion 3112d of the blade 3112b and released from the bobbin thread 60 into the clamp space 3314. The clues of the bobbin thread 60 located are in a relaxed state and are also involved in the winding space 513. Immediately, the release drive source 332 moves the pushing portion 3312 away from the connecting plate 3112a, and the blade 3112b brings the blade portion 3112c of the blade 3112b into contact with the connecting plate 3112a via its own elasticity. Next, when the bobbin 51 of the first bobbin unit 501 winds the bobbin thread 60 and reaches a predetermined number of turns, the bobbin thread 60 is already fully wound inside the winding space 513 of the first bobbin unit 501. In this case, the first drive source 3111 of the first movable component 311 stops rotating.

See FIG. 16B. After the winding of the bobbin thread 60 is stopped, the relative positional relationship between the bobbin thread 60 and the jig component 323 cannot be determined. Therefore, the adjustment drive source 342 of the bobbin thread control mechanism 34 adjusts the bobbin thread control mechanism 34. By moving the member 341 to swing the pivot shaft 3411 around the axis, the adjustment plate 3412 of the adjustment member 341 is brought into contact with the bobbin thread 60 located between the yarn wrapper 15 and the bobbin 51, and further, the adjustment plate The through hole 3412a of 3412 restricts the bobbin thread 60 located between the yarn wrapper 15 and the bobbin 51 from being close to the jig component 323, whereby the jig component 323 is then moved to the yarn wrapper 15 and the bobbin 51. It is necessary to be able to ensure that the bobbin thread 60 located between the and is clamped. In order to achieve the above effect, as another implementation procedure, the adjustment drive source 342 adjusts and swings the adjustment member 341 before stopping the winding of the bobbin thread 60, so that the adjustment plate 3412 is moved. The bobbin thread 60 located between the yarn wrapper 15 and the bobbin 51 is brought into contact with the bobbin thread 60, and the bobbin thread 60 located between the yarn wrapper 15 and the bobbin 51 is restricted from approaching the jig component 323. Finally, the bobbin thread 60 wound around the bobbin 51 can be positioned in the operation path of the jig component 323.

See FIG. 16C. The first moving jig drive source 3211 of the first moving part 321 moves the first jig transmission member 3212 of the first moving part 321 to extend outward, and the jig part 323 of the bobbin clamp mechanism 32 is the first. Moved by the jig transmission member 3212, it moves from the first preliminary position P1 (as shown in FIG. 16A) to the clamp position P2 along the first path D1 (as shown in FIG. 16D) which intersects the motion axis L. , The bobbin thread 60 interposed between the bobbin 51 and the yarn wrapper 15 is positioned between the movable jig 3231 and the fixing jig 3232. In this embodiment, in the process of moving the jig component 323 from the first spare position P1 to the clamp position P2, the guide roller 3244 of the relief unit 324 continuously passes the assembling plate 3242 via the holding force 3245a of the holder 3245. When the guide roller 3244 moves from one end of the arched guide rail 3242a to the other end of the arched guide rail 3242a, the rocking plate 3241 of the relief unit 324 is the first moving component 321. And the jig component 323 is moved to swing in a counterclockwise path, and further, the first moving jig drive source 3211, the first jig transmission member 3212, the jig component 323, and the first bobbin unit. The jig component 323 can escape from the bobbin 51 of the first bobbin unit 501 by changing the relative position with respect to the 501. As a result, when the jig component 323 moves to the clamp position P2 along the first path D1, it is possible that the jig component 323 does not hit the bobbin 51 of the first bobbin unit 501 via the escape unit 324. See FIG. 16D. When the jig component 323 of the bobbin thread clamp mechanism 32 is located at the clamp position P2, the stop pin 3231b of the movable jig 3231 is pressed against the bobbin thread 60 located between the bobbin 51 and the yarn wrapper 15. When the bobbin thread 60 is in a loosened state, the stop pin 3231b can limit the length of a part of the bobbin thread 60 so as to be located between the movable jig 3231 and the fixing jig 3232, and further, the jig. When the component 323 clamps the bobbin thread 60, the relative positional relationship between the bobbin thread 60 and the jig component 323 can be secured. After that, the jig drive source 3233 of the jig component 323 moves and swings the movable jig 3231 of the jig component 323 to bring the movable jig 3231 closer to the fixing jig 3232 of the jig component 323, and further. The bobbin thread 60 located between the bobbin 51 and the yarn wrapper 15 is clamped to the movable jig 3231 and the fixing jig 3232 at a position close to the adjusting member 341. In this case, the clamp block 3232a of the fixing jig 3232 is moved to the concave groove 3231a, and the concave groove 3231a and the clamp block 3232a are in close contact with each other, so that the concave groove 3231a and the clamp block 3232a clamp the bobbin thread 60. The bobbin thread 60 is prevented from coming off from the jig component 323, and the concave groove 3231a and the clamp block 3232a jointly clamp a part of the bobbin thread 60. Here, the bobbin thread 60 is sorted into a winding bobbin thread 61 located between the bobbin 51 and the jig component 323, and the other part is used as a supply source bobbin thread 62 to be assembled to the yarn wrapper 15.

See FIGS. 16E and 16F. The first moving jig drive source 3211 of the first moving part 321 moves the first jig transmission member 3212 of the first moving part 321 to contract inward, and the jig part 323 of the bobbin clamp mechanism 32 is the first. It is moved by the jig transmission member 3212 and returns from the clamp position P2 to the first spare position P1 along the first path D1, and the supply source bobbin thread 62 penetrates below the bobbin 51 of the first bobbin unit 501. In this case, the release drive source 332 of the clamp release mechanism 33 moves and swings the release lever 331 of the clamp release mechanism 33, so that the pushing portion 3312 of the release lever 331 presses against the lower end of the connecting portion 3112d of the blade 3112b. Then, the blade portion 3112c of the blade 3112b is separated from the connection plate 3112a, and the clamp space 3314 is turned on to allow the bobbin thread 60 to enter. Next, the first drive source 3111 of the first movable component 311 moves the first transmission member 3112 via the first interlocking unit 3113 to rotate the first transmission member 3112 in the clockwise direction, and the supply source bobbin thread 62 enters the inside of the clamp space 3314. Penetrate. After that, the release drive source 332 moves the release lever 331 to swing the release lever 331, so that the pushing portion 3312 of the release lever 331 is separated from the lower end of the connecting portion 3112d of the blade 3112b, and the blade 3112b is further moved through its own elasticity. , The source bobbin thread 62 (as shown in FIG. 16F) is jointly clamped to the blade portion 3112c of the blade 3112b and the connection plate 3112a, and the operation of winding the next bobbin thread 60 is awaited. After that, the second moving jig drive source 3221 of the second moving part 322 moves the second jig transmission member 3222 of the jig part 323 to execute the first moving stroke, and the first moving part 321 and the jig The component 323 is moved by the second jig transmission member 3222, and the jig component 323 is moved from the first spare position P1 to the first guide position P3 along the second path D2 where the first path D1 intersects. Moving. When the jig component 323 is located at the first guide position P3, the source bobbin thread 62 touches the blade portion 3112c of the blade 3112b. After that, as shown in FIGS. 16G and 16H, the first drive source 3111 of the first movable component 311 moves the first transmission member 3112 again via the first interlocking unit 3113 to counterclockwise the motion axis L as the axis. Rotated in the clockwise direction, the blade 3112b is moved by the first transmission member 3112 to cut the source bobbin thread 62. In this case, the clues end of the supply source bobbin thread 62 is sandwiched by the blade 3112b, and the clues end of the winding bobbin thread 61 is sandwiched by the jig component 323. As described above, in FIGS. 16A to 16H, for convenience of explanation, the bobbin case 52 moves in the axial direction and is separated from the bobbin 51, but the relative distance between the bobbin case 52 and the bobbin 51 is actually the separated state S1 in FIG. 15A. Should be like. Then, in FIG. 16G, the bobbin 51 is taken out from the connection plate 3112a in order to clearly show the angular state of the blade 3112b.

In the steps of FIGS. 16A to 16E, when the jig component 323 moves along the first path D1, the first movable component is prevented from interfering with the connection plate 3112a and the blade 3112b. The 311 can be rotated by moving the connection plate 3112a and the blade 3112b. As a result, the blade 3112b is rotated to an angle at which the jig component 323 can be avoided, but the angle is not limited to the one shown.

See FIG. 17A. After the cutting of the bobbin thread 60 is completed, the winding bobbin thread 61 is started to be attached to the bobbin case 52 of the first bobbin unit 501. First, the third drive source 3131 of the third movable component 313 moves the third interlocking unit 3133 to separate it from the third transmission member 3132, and the reset urging force 3134a of the reset urging member 3134 urges the pressing block 3132a. The third transmission member 3132 moves toward the third drive source 3131. Further, the moving third transmission member 3132 moves the bobbin case 52 of the first bobbin unit 501 and is assembled to the bobbin 51 of the first bobbin unit 501, so that the bobbin case 52 and the first bobbin unit of the first bobbin unit 501 are assembled. The bobbin 51 of 501 can be switched from the separated state S1 to the assembled state S3 which is assembled with each other. In this case, the winding bobbin thread 61 comes into contact with the open end 524 of the bobbin case 52 and becomes taut.

See FIG. 17B. When the winding bobbin thread 61 comes into contact with the open end 524 of the bobbin case 52, the second drive source 3121 of the second movable component 312 generates rotational power to move the second drive pulley 3123a of the second interlocking unit 3123. The second belt 3123c of the second interlocking unit 3123 moves the second transmission member 3122 via the second driven pulley 3123b of the second interlocking unit 3123 to rotate the motion axis L about the axis. When the second transmission member 3122 rotates, the synchronization boss 3142 of the synchronization component 314 is restricted to the synchronization groove 3141 and cannot move, so that the second transmission member 3122 is the third transmission of the third movable component 313 via the synchronization component 314. The member 3132 is moved and rotated, and the bobbin case 52 of the first bobbin unit 501 is synchronously rotated. As shown in the figure, the second drive source 3121 first moves the bobbin case 52 of the first bobbin unit 501 via the second transmission member 3122 to rotate the bobbin case 52 in the clockwise direction. After that, the second drive source 3121 moves the bobbin case 52 of the first bobbin unit 501 again to rotate it in the counterclockwise direction, so that the rotating bobbin case 52 uses the winding bobbin thread 61 as the thread guide groove of the bobbin case 52. Introduced in 527, a part of the winding bobbin thread 61 can be located between the case 521 of the bobbin case 52 and the holding dome 528 of the bobbin case 52.

See FIG. 17C. Next, the second moving jig drive source 3221 of the second moving part 322 moves the second jig transmission member 3222 of the jig part 323 to perform the second moving stroke, and cures with the first moving part 321. A third path in which the tool component 323 is moved by the second jig transmission member 3222 and moves away from the connection plate 3112a, and the jig component 323 is parallel to the second path D2 from the first guide position P3. Move along D3 to the second reserve position P4. As shown in FIG. 17D, in the process of moving the jig component 323 to the second spare position P4, the first jig transmission member 3212 of the first moving component 321 touches the roller 3243 of the escape unit 324, and the relief unit 324 touches the roller 3243. The rocking plate 3241 of the above is swung, and the guide roller 3244 of the escape unit 324 is separated from the arched guide rail 3242a. As a result, the jig component 323 of the bobbin thread clamp mechanism 32 pulls the winding bobbin thread 61, the winding bobbin thread 61 is introduced into the guide port 528a of the holding dome 528, and the holding dome 528 further pulls the winding bobbin thread 61. Can be guided from the thread guide groove 527 to the thread guide hole 526.

See FIG. 17E. When the jig component 323 is located at the second spare position P4, the first moving jig drive source 3211 of the first moving component 321 moves the first jig transmission member 3212 of the first moving component 321 again and extends outward. The first jig transmission member 3212 moves the jig component 323 to move from the second preliminary position P4 to the second guide position P5 along the fourth path D4 parallel to the first path D1. In particular, in the process of moving the jig component 323 to the second guide position P5, the winding bobbin thread 61 hits the grab arm 529 of the bobbin case 52, and then presses the elastic arm 530a of the wiper 530 against the elastic arm 530a. By generating the strain, the winding bobbin thread 61 is guided to the inside of the perforation 529a of the grab arm 529. This completes the work of attaching the winding bobbin thread 61 to the bobbin case 52. In particular, when the winding bobbin thread 61 is located inside the perforation 529a, the elastic arm 530a is not pressed against the winding bobbin thread 61 and therefore overlaps with the perforation 529a, so that the winding bobbin thread 61 is elastic. It can be blocked by the arm 530a and prevented from coming off the perforation 519a.

See FIG. 17F. The winding bobbin thread 61 is guided to the inside of the perforation 529a of the grab arm 529, and the jig drive source 3233 of the jig component 323 moves and swings the movable jig 3231 of the jig component 323 to move it. The tool 3231 is separated from the fixing jig 3232 of the jig component 323, and the jig component 323 further releases the clue of the winding bobbin thread 61. Finally, the jig component 323 returns from the second guide position P5 to the first spare position P1 via the first moving component 321 and the second moving component 322, and waits for the bobbin thread 60 to be attached to the bobbin case 52.

See FIG. In the second preferred embodiment, the difference from the first preferred embodiment lies in the four-way assembly method of the first movable part 311, the second movable part 312, the third movable part 313, and the synchronous part 314. .. As shown in the figure, the second transmission member 3122 of the second movable component 312 is movably bored in the first transmission member 3112 of the first movable component 311, and the second interlocking unit 3123 of the second movable component 312 is a single unit. The third transmission member 3132 is movably assembled to the outer periphery of the second interlocking unit 3123, and is assembled to the second transmission member 3122 via the synchronization boss 3142 of the synchronization component 314. Among them, the first transmission member 3112 and the third transmission member 3132 are located on both opposite sides of the second transmission member 3122, respectively. The third interlocking unit 3133 of the third movable component 313 has an interlocking rack 3133a that can be moved and displaced in the axial direction of the third transmission member 3132, and an interlocking gear 3133b that is assembled to the third drive source 3131. And are provided, and the interlocking rack 3133a is meshed with the interlocking gear 3133b. Among them, the synchronization groove 3141 of the synchronization component 314 is formed in the second interlocking unit 3123, and by exhibiting a long shape, the synchronization boss 3142 simultaneously causes the third transmission member 3132, the second interlocking unit 3123, and the second transmission. It is bored in the member 3122.

In this embodiment, the second drive source 3121 of the second movable component 312 generates rotational power to move the second transmission member 3122 to rotate it with respect to the first transmission member 3112. In this case, the synchronization boss 3142 of the synchronization component 314 rotates without being affected by the first transmission member 3112, and the synchronization groove 3141 of the synchronization component 314 rotates in synchronization with the second transmission member 3122. The third drive source 3131 of the third movable component 313 generates rotational power, and the interlocking gear 3133b of the third interlocking unit 3133 moves the interlocking rack 3133a of the third interlocking unit 3133 to move the third. The transmission member 3132 moves along the movement axis L. When the third transmission member 3132 moves, the synchronization boss 3142 of the synchronization component 314 moves along the synchronization groove 3141 of the synchronization component 314, so that the third transmission member 3132 moves the entire second transmission member 3122 through the synchronization component 314. Move to move in the axial direction.

See FIG. In the third preferred embodiment, the difference from the second preferred embodiment is that the motion mechanism 31 of the bobbin unit does not have the synchronization component 314 and the third transmission member 3132 of the third movable component 313 is a plate. There is. Since the plate is assembled to the second drive source 3121 of the second movable component 312, the third transmission member 3132 is coaxially not provided on the motion axis L. Among them, when the third drive source 3131 of the third movable component 313 moves the third transmission member 3132 to move it in the axial direction of the motion axis L, the entire second movable component 312 (second drive source 3121, second transmission). The member 3122 and the second interlocking unit 3123) move along the motion axis L at the same time, so that the bobbin case 52 moves and is separated from the bobbin 51. In this embodiment, the third transmission member 3132 may be directly connected to the third drive source 3131, but may be connected to the third drive source 3131 via the third interlocking unit 3133.

However, the fact that the third transmission member 3132 is assembled to the second drive source 3121 is only for convenience of explanation, that is, the third transmission member 3132 is assembled to the first drive source 3111 of the first movable component 311. It may be attached. Further, when the third transmission member 3132 moves in the axial direction of the motion axis L via the third drive source 3131, the entire first movable component 311 (first drive source 3111, first transmission member 3112, and first interlocking unit 3113) (Including) can move along the motion axis L at the same time, so that the bobbin 51 moves and is separated from the bobbin case 52.

Further, in this embodiment, the jig component 323 of the bobbin thread clamping mechanism 32 may first temporarily clamp the source bobbin thread 62 before the bobbin thread 60 is wound around the bobbin 51. After that, the release drive source 332 of the clamp release mechanism 33 moves and swings the release lever 331 of the clamp release mechanism 33, so that the pushing portion 3312 of the release lever 331 presses the lower end of the connecting portion 3112d of the blade 3112b. Further, the blade portion 3112c of the blade 3112b is separated from the connection plate 3112a, and the clamp space 3314 is turned on. Next, the jig component 323 can be moved by the first moving component 321 and the second moving component 322 to temporarily disengage the supply source bobbin thread 62 from the clamp space 3314. As a result, in the process of removing the bobbin thread 60, the source bobbin thread 62 is temporarily disengaged from the clamp space 3314 and the extra bobbin thread 60 is pulled out from the yarn wrapper 15 in the process of rotating the first transmission member 3112. Can be prevented. Then, after the removal of the bobbin thread 60 is completed, the first moving part 321 and the second moving part 322 are moved by moving the jig part 323, and the source bobbin thread 62 returns to the inside of the clamp space 3314. After that, the release drive source 332 moves the release lever 331 to swing it, so that the pushing portion 3312 of the release lever 331 is separated from the lower end of the connecting portion 3112d of the blade 3112b, and the blade 3112b is further moved through its own elasticity. , The blade portion 3112c of the blade 3112b and the connection plate 3112a jointly clamp the source bobbin thread 62.

The embodiments listed above are merely for convenience of explanation of the present invention and do not limit them. All of the various simple modifications and modifications made by those skilled in the art based on the claims of the present invention and the description of the invention without departing from the spirit of the present invention should be included in the following claims. Is.

1 Automatic bobbin winding sewing machine 10 Sewing machine body 11 Pedestal 12 Outer hook 13 Worktable 14 Fixed bracket 15 Jig wrapper 20 Bobbin exchange device 21 Bobbin unit Moving parts 211 Moving drive source 212 Transmission bar 22 Movable frame 221 1st connection end 222 2nd Connection end 223 Mounting part 23 1st chuck part 231 1st chuck connection base 231a 1st pivot part 232 1st fixed chuck 233 1st movable chuck 233a 1st clamp part 234 1st chuck drive device 24 2nd chuck part 241 2 chuck connection base 242 2nd fixed chuck 243 2nd movable chuck 243a 2nd clamp part 244 2nd chuck drive device 25 bobbin unit rotating parts 251 rotary drive source 252 transmission unit 252a 1st transmission gear 252b 2nd transmission gear 30 bobbin thread Introduction device 31 Movement mechanism of bobbin unit 311 1st movable part 3111 1st drive source 3112 1st transmission member 3112a Connection plate 3112b Blade 3112c Blade part 3112d Connection part 3113 1st interlocking unit 3113a 1st drive pulley 3113b 1st driven pulley 3113c 1st belt 312 2nd movable part 3121 2nd drive source 3122 2nd transmission member 3123 2nd interlocking unit 3123a 2nd drive pulley 3123b 2nd driven pulley 3123c 2nd belt 313 3rd movable part 3131 3rd drive source 3132 3rd Transmission member 3132a Pushing block 3133 3rd interlocking unit 3133a Interlocking rack 3133b Interlocking gear 3134 Reset urging member 3134a Reset urging force 314 Synchronous part 3141 Synchronous groove 3142 Synchronous boss 315 Position regulation part 3151 Movement prevention unit 3151a Ring groove 3151b 3151c Latch 3152 Rotation prevention unit 3152a Positioning boss 3152b Positioning groove 32 Bobb thread clamp mechanism 321 First moving part 3211 First moving jig drive source 3212 First jig transmission member 322 Second moving part 3221 Second moving jig drive source 3222 2nd jig transmission member 323 Jig parts 3231 Movable jig 3231a Concave groove 3231b Stop pin 323 2 Fixing jig 3232a Clamp block 3232b Pin hole 3233 Jig drive source 324 Escape unit 3241 Swing plate 3242 Assembly plate 3242a Arched guide rail 3243 Roller 3244 Guide roller 3245 Holder 3245a Holding force 33 Holding release mechanism 331 Release lever Bobbin 3312 Pushing part 3313 Bounce part 3314 Clamp space 332 Release drive source 34 Bobbin thread control mechanism 341 Adjusting member 3411 Spinning shaft 3412 Adjusting plate 3412a Through hole 3413 Connecting rod 342 Adjusting drive source 40 Residual bobbin thread removing device 41 Moving mechanism 411 Moving drive source 412 Movable arm 42 Thread cutting mechanism 421 Thread cutting drive source 422 Cutter 423 Thread cutting transmission member 423a Blow hole 43 Suction mechanism 431 Suction port 44 Alignment mechanism 441 Guide part 4411 Magnet 442 Positioning part 442 1 Groove 50 Bobbin unit 501 1st bobbin unit 502 2nd bobbin unit 51 Bobbin 511 Thread winding shaft 511a 1st thread winding part 511b 2nd thread winding part 511c Shaft groove 511d Position regulation flange 512 Position regulation plate 512a Position regulation groove 513 Winding space 514 Installation space 52 Bobbin case 521 Case 522 Kama shaft 523 Closed end 524 Opening end 525 Storage space 526 Thread guide hole 527 Thread guide groove 528 Holding dome 528a Guide port 259 Grab arm 528a Perforation 530 Wiper 530a Elastic arm 60 Bobbin 62 Supply source Bobbin A Suction airflow B Blowout airflow C Cutting position D1 1st path D2 2nd path D3 3rd path D4 4th path L Motion axis S1 Separation state S2 Initial state S3 Assembly state P1 1st preliminary position P2 Clamp position P3 1st guide position P4 2nd spare position P5 2nd guide position

Claims (11)

A residual bobbin thread removing device used in combination with a bobbin provided with a winding space.
A thread cutting mechanism having a cutter capable of cutting bobbin thread located in the winding space,
The cutter can be moved to the inside of the winding space, the cutter can be positioned at the cutting position, and the bobbin thread located in the winding space can be cut, and the position can be changed. A residual bobbin thread removing device comprising a moving mechanism having a movable arm. The thread cutting mechanism provides a suction mechanism capable of forming a suction airflow in the winding space to remove the bobbin thread cut by the cutter and exhibiting an initial state in which the bobbin does not wind the bobbin thread. The residual bobbin thread removing device according to claim 1, further comprising. The thread cutting mechanism further includes a thread cutting drive source capable of moving and rotating the cutter, which is connected to the movable arm and the movable arm moves the cutter to move and move to the cutting position. The residual bobbin thread removing device according to claim 1, characterized in that. A thread cutting transmission member connected to the cutter is assembled to the thread cutting drive source, and the thread cutting transmission member is provided with a blow hole through which a blown airflow can flow out. The residual bobbin thread removing device according to claim 3. The bobbin is provided with a drilling space recessed from the surface contour of the bobbin, and when the drilling space communicates with the winding space and the cutter is positioned at the cutting position, the cutter The residual bobbin thread removing device according to claim 1, wherein a part of the bobbin thread is accommodated. The bobbin has two position regulating plates arranged at intervals and a thread winding shaft located between the two position regulating plates, and the winding is between the two position regulating plates and the thread winding shaft. The attachment space is jointly formed, one of the two position regulating plates recesses the position regulating groove and the shaft groove, respectively, with the thread winding shaft, and the position regulating groove communicates with the shaft groove. The residual bobbin thread removing device according to claim 5, wherein the position regulating groove and the shaft groove jointly form the drilling space. When the bobbin is assembled to the transmission member, the drilling space can be aligned with the cutter located at the cutting position so that the cutter can be inserted into the drilling space, and the bobbin and the transmission can be aligned with the cutter. The residual bobbin thread removing device according to claim 5, further comprising an alignment mechanism connected to the member. The alignment mechanism is characterized by having a guide component capable of changing the relative position between the bobbin and the transmission member so that the drilling space can be close to the cutter located at the cutting position. The residual bobbin thread removing device according to claim 7. The alignment mechanism is such that when the drilling space is close to the cutter located at the cutting position via the guide component, the bobbin and the transmission member are prevented from being displaced with respect to the transmission member. The residual bobbin thread removing device according to claim 8, further comprising a positioning component capable of limiting the relative position between the two. The bobbin is assembled to the bobbin case, the bobbin case can be driven to rotate, has a holding dome, and the rotating bobbin has a bobbin thread located between the bobbin case and the holding dome. The residual bobbin thread removing device according to claim 1, wherein the bobbin case can be wound around the inside of the bobbin case. A sewing machine used in combination with a bobbin that has a winding space.
The sewing machine body with the outer hook and
Claims 1 to 10 include a bobbin changing device that is assembled to the sewing machine main body and can selectively assemble the bobbin to or separate from the outer hook. A sewing machine having the residual bobbin thread removing device according to any one of the above items.

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