Bottom line introduction machine for automatic bobbin winding

Abstract

The present invention relates to a bobbin thread introduction machine for automatically winding bobbin threads, comprising a bobbin case fixing mechanism, a bobbin core rotating mechanism, a thread hook swinging mechanism, and a horizontal rotation mechanism. The bobbin core rotating mechanism can drive a bobbin core to rotate along an X-axis direction to wind a bobbin thread, thereby allowing the bobbin core to automatically wind the bobbin thread. In addition, the horizontal rotation mechanism can drive the bobbin core and a bobbin case to rotate along a Z-axis direction, and cooperate with the thread hook swinging mechanism to swing along a Y-axis direction, so that the thread can be introduced into the thread hanger of the bobbin case in accordance with multiple swing strokes and multiple rotation strokes, thereby completing the thread replenishment operation of the bobbin assembly.

Description

Technical Field

[0001] The present invention relates to a bobbin bottom thread replenishing device for winding a bobbin bottom thread on a bobbin assembly, and in particular to a bobbin bottom thread introducing machine which can simultaneously drive a bobbin case and a bobbin to rotate along the Z-axis direction. Background Art

[0002] When a sewing machine using the lockstitch principle is used to sew fabric, whether it is a full-rotation hook or a semi-rotation shuttle, there will be a bobbin that needs to be wound with the bottom thread, and most sewing machines using the lockstitch principle have a bobbin case that can accommodate the bobbin.

[0003] However, in order to increase the speed of the sewing machine, the diameter of the bobbin cannot be too large, which will relatively limit the length of the bobbin thread. As a result, the bobbin must be replaced frequently to prevent the bobbin thread from running out. Moreover, when replacing the bobbin thread, not only must the sewing machine be stopped, but the operator must also manually replace the bobbin thread, which does not improve production efficiency.

[0004] To overcome the aforementioned drawbacks, the current sewing machine industry has an automatic bobbin exchange device. When it detects that the bobbin thread wound on the bobbin is about to run out, the automatic bobbin exchange device simultaneously removes the bobbin case and the bobbin from the rotary hook, separating the bobbin case and the bobbin from the rotary hook. Another bobbin case and a bobbin with a full bobbin thread are then simultaneously installed in the rotary hook to achieve the effect of automatically replacing the bobbin. However, even though the automatic bobbin exchange device can separate the bobbin that is about to run out of bobbin thread from the rotary hook, it cannot assist the operator in winding the bobbin thread onto the bobbin and guiding the bobbin thread into the guide groove of the bobbin case. Consequently, the operator needs to manually guide the bobbin thread into the guide groove of the bobbin case, which wastes the operator's working time.

[0005] In order to save the operator the time of manually introducing the bobbin thread into the bobbin case, the sewing machine industry has developed a bobbin thread introducing device to automatically wind the bobbin thread onto the bobbin core and automatically introduce the bobbin thread into the guide groove of the bobbin case. In order to introduce the bobbin thread into the guide groove of the bobbin case, the bobbin thread introducing device must be clamped to the bobbin thread during the process of introducing the bobbin thread into the guide groove, so that the bobbin thread cannot slide relative to the bobbin thread introducing device. Furthermore, during the process of introducing the bobbin thread into the guide groove, the bobbin thread introducing device pulls the bobbin thread wound on the bobbin core out of the bobbin case, causing the bobbin thread between the bobbin thread introducing device and the bobbin case to be too long and loose, resulting in the bobbin thread between the bobbin thread introducing device and the bobbin case being easily knotted or entangled with other parts of the bobbin case. Summary of the Invention

[0006] The main purpose of the present invention is to provide a bobbin thread introduction machine for automatically winding bobbin thread, wherein the bobbin thread introduction machine can automatically wind the bobbin thread on the bobbin, and can install the bobbin case on the bobbin after the winding operation is completed to form a bobbin set together, and the bobbin case and the bobbin will be driven by the same driving source to rotate around an axis perpendicular to the bobbin axis direction, so that the bobbin thread can be pulled by the thread hook and enter the thread hook of the bobbin case, thereby completing the bobbin thread replenishment operation of the bobbin set.

[0007] A secondary object of the present invention is to enable the bobbin to selectively move to a combined position for engagement with the interior of the bobbin case, a loose position for partial removal from the bobbin case, or a winding position for complete removal from the bobbin case, thereby preventing the bobbin from being clamped by the bobbin case and the bobbin during the winding, hooking, and threading processes.

[0008] Another object of the present invention is to use friction contact transmission for part of the driving source of the bottom thread introduction machine, so that the mechanisms can be separated from each other, reducing the number of mechanisms to be driven when the bobbin case and the bobbin core rotate synchronously, and reducing the overall volume requirement of the bottom thread introduction machine.

[0009] Another object of the present invention is to coaxially arrange a movable cutter and a fixed cutter for cutting the bobbin thread on a drive wheel, so that a single drive source can selectively push the movable cutter to multiple different positions according to needs, thereby cutting the bobbin thread or releasing the clamped bobbin thread.

[0010] To achieve the aforementioned objectives, the present invention provides a bobbin introduction machine for automatically winding bobbin threads, comprising: a bobbin case fixing mechanism, a bobbin core rotating mechanism, a thread hook swinging mechanism, and a horizontal rotating mechanism, thereby allowing a bobbin of a bobbin assembly to automatically wind a bobbin thread and introduce the bobbin thread into a bobbin case of the bobbin assembly.

[0011] The bobbin case fixing mechanism comprises a movable base and a support shaft assembled to the movable base, with the bobbin case assembled to the support shaft. The bobbin core rotating mechanism comprises a drive wheel, a transmission assembly, and a first drive source. The drive wheel is sleeved on the support shaft, and the bobbin core is assembled to the drive wheel; the transmission assembly is connected to the drive wheel, and the first drive source can drive the transmission assembly, so that the drive wheel can be rotated by the first drive source along an X-axis direction, allowing the bobbin thread to be wound inside the bobbin core.

[0012] The thread hook swing mechanism has a second driving source to drive a wire hook that hooks the bottom thread, so that the wire hook can be swung along a Y-axis direction to generate multiple swing strokes. The wire hook has a thread hook portion that can contact the bottom thread, and the thread hook portion faces an annular wall portion of the bobbin case.

[0013] The horizontal rotation mechanism has a fixed base supporting the bobbin case fixing mechanism and a rotation driving source. The rotation driving source can simultaneously drive the bobbin case fixing mechanism, the driving wheel and the transmission assembly, so that the bobbin core group can be rotated along a Z-axis direction to generate multiple rotation strokes, allowing the bobbin case to change from the annular wall portion to a top cover portion facing the thread hooking portion.

[0014] The multiple swing strokes generated by the thread hook swing mechanism can cooperate with the multiple rotation strokes generated by the horizontal rotation mechanism, so that the bottom thread can be introduced into a spiral thread hook of the bobbin case.

[0015] The transmission assembly includes: a transmission shaft, a transmission wheel and a rubber wheel. The transmission shaft is rotatably assembled on the movable base and has a first end and a second end. The transmission wheel is connected to the first end and meshes with a gear portion of the drive wheel. The rubber wheel is connected to the second end and can contact a friction wheel of the first drive source.

[0016] In a feasible embodiment, the bobbin core rotating mechanism includes a driving source lifting device, an adsorption device, a linear sensing device and a stop positioning device, wherein the driving source lifting device can drive the first driving source to rise and fall along the Z-axis direction, so that the friction wheel can selectively contact or separate from the rubber wheel.

[0017] The adsorption device includes a vacuum pump and an air extraction pipeline connected between the vacuum pump and the support shaft, so that the air extraction pipeline, the driving wheel and the support shaft together form an air extraction path, so that the bobbin can be vacuum-adsorbed on a positioning portion of the driving wheel.

[0018] The thread quantity sensing device includes a first movable component, a second movable component and an interrupting light sensor. The first movable component is installed on the movable base and can move relative to the movable base along the Z-axis direction, so that a contact rod of the first movable component can enter the interior of the bobbin to contact the bottom line; the second movable component is placed below the first movable component to assemble the horizontal rotation mechanism, and the second movable component can be pushed along the Z-axis direction by the first movable component, so that a blocking member of the second movable component blocks a sensing area of ​​the interrupting light sensor; the first movable component can be rotated along the Z-axis direction by the horizontal rotation mechanism, while the second movable component and the interrupting light sensor are not driven to rotate by the horizontal rotation mechanism.

[0019] The stop positioning device includes a positioning component and a positioning drive source; the positioning component has a stop pin, a lever and an elastic member, the stop pin can be inserted into a stop groove of the driving wheel, the two ends of the lever are respectively connected to the stop pin and the elastic member, the elastic member can generate an elastic force to push the stop pin; the positioning drive source can push a contact member to disengage from the lever, allowing the stop pin to be inserted into the stop groove.

[0020] The fixed base has a substrate and a support column arranged between the substrate and the movable base; and the rotation drive source has a drive motor assembled under the substrate and a rotating shaft passing through the inside of the support column, and the two ends of the rotating shaft are respectively connected to the movable base and the drive motor.

[0021] In addition, the bobbin thread introduction machine may further include a bobbin set separation mechanism, a thread tension control mechanism and a cutting mechanism.

[0022] The bobbin assembly separation mechanism includes a sleeve, a connecting rod assembly, a displacement driving source and a return spring; the sleeve is movably mounted on the support shaft, and the driving wheel is rotatably mounted on the sleeve; the connecting rod assembly is connected to the sleeve and the movable base, so that the connecting rod assembly, the sleeve and the bobbin case fixing mechanism can all be rotated together by the horizontal rotation mechanism; the displacement driving source is assembled to the fixed base and does not rotate with the movable base, and can selectively push the connecting rod assembly, so that the sleeve and the driving wheel can move backward along the X-axis direction, so that the bobbin can be moved to a winding position separated from the bobbin case; the return spring is installed between the movable base and the connecting rod assembly, and can drive the sleeve and the driving wheel to move forward along the X-axis direction, so that the bobbin can be moved from the winding position to a combined position entering the bobbin case.

[0023] In order to increase the intermediate stop position of the movement between the bobbin and the bobbin case, the bobbin assembly separation mechanism further includes a stop drive source and a stop member. The stop member can be moved to a first position by the stop drive source to block a pneumatic cylinder rod of the displacement drive source, so that the bobbin can be moved to a loose position between the winding position and the combined position by the return spring. The stop member can also be moved to a second position to release the pneumatic cylinder rod.

[0024] The line tension control mechanism includes: a line tension adjustment component and a line tension sensing component; wherein the line tension adjustment component has a fixed line hanging plate, a movable line hanging plate and an actuator, the bottom thread passes through the fixed line hanging plate and the movable line hanging plate to form a first length, and the actuator can rotate the movable line hanging plate so that the first length of the bottom thread is changed to a second length; the line tension sensing component has a sensor, a contact detection plate and a torsion spring, the sensor detects whether the bottom thread is being transported, the contact detection plate is electrically connected to a resistance detector, and the resistance detector is triggered when the torsion spring contacts the contact detection plate; the torsion spring has a line hanging portion to grab the bottom thread, so that the torsion spring can be pulled by the bottom thread and leave the contact detection plate.

[0025] The cutter mechanism includes a movable cutter, a fixed cutter, a thread clamping spring and a cutter pushing device. The movable cutter is rotatably sleeved on the driving wheel and has a first pushing portion and a second pushing portion. The fixed cutter is connected to the driving wheel and can cooperate with the movable cutter to cut the bottom thread. The thread clamping spring is connected to the driving wheel to press against the movable cutter and clamp the bottom thread. The cutter pushing device can push the first pushing portion so that the movable cutter can enter between the fixed cutter and the thread clamping spring in a counterclockwise direction. The cutter pushing device can also push the second pushing portion so that the movable cutter can leave the fixed cutter in a clockwise direction.

[0026] However, this is only used for the convenience of illustration and is not intended to limit the bobbin rotating mechanism and the bottom thread introduction machine, and the bobbin rotating mechanism can adopt one or more combinations of the driving source lifting device, the adsorption device, the thread amount sensing device and the stop positioning device; the bottom thread introduction machine can also adopt one or more combinations of the bobbin group separation mechanism, the thread tension control mechanism and the cutter mechanism.

[0027] The present invention is characterized in that the bobbin assembly can separate the bobbin case from the bobbin along the X-axis direction, and the bobbin can also be rotated along the X-axis direction by the bobbin rotating mechanism to complete a winding stroke of the bottom thread; in addition, the thread hook swinging mechanism that swings along the Y-axis direction can cooperate with the thread tension control mechanism and the horizontal rotation mechanism that rotates along the Z-axis direction, so that the multiple swinging strokes of the wire hook can cooperate with the multiple rotation strokes of the bobbin assembly, thereby allowing the bottom thread to be introduced into the thread path of the bobbin case and the bottom thread to be wound into the spiral thread hook of the bobbin case to complete a bottom thread introduction stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1A perspective view of the automated bottom thread replenishing device in conjunction with the present invention;

[0029] Figure 2 This is an exploded view of the bobbin assembly;

[0030] Figure 3 A perspective view of a bottom thread introduction machine according to the present invention;

[0031] Figures 4A to 4C This is an exploded view of various parts of the bottom thread introduction machine of the present invention;

[0032] Figure 5 It is a first cross-sectional view of the bobbin case fixing mechanism combined with the bobbin core rotating mechanism;

[0033] Figure 6 This is an exploded view of the horizontal rotation mechanism;

[0034] Figure 7 is an enlarged schematic diagram of the driving wheel;

[0035] Figure 8 A second cross-sectional view of the bobbin case fixing mechanism combined with the bobbin core rotating mechanism;

[0036] Figure 9 is a schematic diagram of the first driving source being moved to an operating position by the driving source lifting device;

[0037] Figure 10 is a schematic diagram of the first driving source being moved to a standby position by the driving source lifting device;

[0038] Figure 11 It is a cross-sectional view of the suction gas path of the adsorption device;

[0039] Figure 12 is a schematic diagram of a linear quantity sensing device;

[0040] Figure 13A This is a schematic diagram of the thread sensor detecting that the bobbin is fully wound;

[0041] Figure 13B This is a schematic diagram of the thread amount sensing device detecting that the bobbin is not fully wound;

[0042] Figure 14 A schematic diagram of inserting the stop positioning device into the driving wheel;

[0043] Figure 15 A schematic diagram of the stop positioning device leaving the driving wheel;

[0044] Figure 16 is a schematic diagram of the bobbin assembly separation mechanism;

[0045] Figure 17 A schematic diagram of the bobbin group separation mechanism rotating through the horizontal rotation mechanism;

[0046] Figure 18 is a schematic diagram of the bobbin being moved to a winding position;

[0047] Figure 19 A schematic diagram of a bobbin being moved from a winding position to an assembled position;

[0048] Figure 20 A schematic diagram of a bobbin being moved from a winding position to a loosening position;

[0049] Figure 21 A schematic diagram of the bobbin being moved from a release position to a combined position;

[0050] Figure 22 This is an exploded view of the line hook swing mechanism;

[0051] Figure 23 is a front view of the line tension control mechanism;

[0052] Figure 24A and Figure 24B A schematic diagram of a wire tension adjustment assembly performing wire tension sensing and adjustment;

[0053] Figure 25 It is a schematic diagram of the cutter mechanism cooperating with the bobbin rotating mechanism;

[0054] Figure 26A and Figure 26B It is a schematic diagram of the action of the cutter pushing device;

[0055] Figure 27A and Figure 27B This is a schematic diagram of the cutter mechanism cutting the bottom thread and clamping the thread;

[0056] Figure 28A and Figure 28B Schematic diagram of the cutter mechanism releasing the bottom thread;

[0057] Figures 29A to 29M It is a schematic diagram of the winding process;

[0058] Figures 30A to 30C It is a schematic diagram of the process of drawing the line;

[0059] Figures 31A to 31N It is a schematic diagram of the wire process.

[0060] Explanation of reference numerals: 1-bottom thread replenishing device; 10-bottom thread; 11-bobbin set replacing machine; 12-bottom thread removing machine; 13-bottom thread introducing machine; 14-sewing machine base; 2-bobbin set; 20-bobbin; 201-winding tube; 202-disc; 21-bobbin case; 211-housing; 212-thread pressing spring; 212a-installation area; 212b-covering area; 212c-guiding area; 213-spiral thread hanger; 213a-connecting section; 213b-spiral section; 214-latch assembly; 215-annular wall portion; 215a-wire groove; 215b-wire hole; 215c-first inclined area; 215d-second inclined area; 216-sleeve portion; 217-top cover portion; 218-accommodating space; 3-shuttle Shell fixing mechanism; 30- movable base; 31- support shaft; 31a- connecting section; 31b- first abutting section; 31c- second abutting section; 31d- positioning end; 311- first channel; 32- bottom plate; 33- wall plate; 331- second channel; 34- first axial hole; 35- second axial hole; 4- horizontal rotation mechanism; 40- fixed base; 401- base plate; 402- support column; 41- rotation drive source; 411- driving motor; 412- rotating shaft; 5- bobbin rotating mechanism; 50- driving wheel; 501- gear portion; 502- positioning portion; 503- sliding portion; 504- stop groove; 505- reflecting surface; 506- third channel; 51- transmission assembly; 511- transmission shaft; 512- transmission Wheel; 513-rubber wheel; 52-first driving source; 521-first driving motor; 522-friction wheel; 53-driving source lifting device; 531-first pneumatic cylinder; 532-lifting plate; 533-pressing portion; 54-adsorption device; 541-vacuum pump; 542-exhaust pipe; 55-linear sensing device; 551-first moving assembly; 551a-contact rod; 551b-first spring; 551c-second spring; 551d-lifting sleeve; 552-second moving assembly; 552a-shielding member; 552b-third spring; 553-blocking light sensor; 56-stop positioning device; 561-positioning assembly; 561a-stop pin; 561b-lever bracket; 561c lever; 5 61d elastic member; 562-positioning drive source; 562a-electromagnet; 562b contact member; 562c fourth spring; 563-reflective light sensor; 6-bobbin assembly separation mechanism; 60-sleeve; 61-connecting rod assembly; 62-displacement drive source; 621-pneumatic cylinder rod; 622-second pneumatic cylinder; 63-return spring; 64-stop drive source; 641 connecting bracket; 642-third pneumatic cylinder; 65-stop member; 7-thread hook swing mechanism; 70-first support frame; 71-second drive source; 72-wire hook; 721-thread hook portion; 722-first hook groove; 723-second hook groove; 8-thread tension control mechanism; 80-second support frame; 81-thread tension adjustment assembly; 811-fixed thread hanging plate;812 - Movable wire hanging plate; 813 - Actuator; 82 - Wire tension sensing assembly; 821 - Sensor; 822 - Contact detection plate; 823 - Torsion spring; 824 - Wire hanging unit; 83 - Wire clamp; 9 - Cutter mechanism; 90 - Third support frame; 91 - Movable cutter; 92 - Fixed cutter; 93 - Wire clamping spring; 94 - Cutter pushing mechanism; 941 - Fourth pneumatic cylinder; 942 - First connecting rod; 943 - Second connecting rod; 944 - Pushing member; 945 - First pushing block; 946 - Second pushing block. DETAILED DESCRIPTION

[0061] The present invention will be further described below with reference to specific embodiments and accompanying drawings, and the advantages and features of the present invention will become clearer as the description proceeds.

[0062] See also Figure 1 As shown, the present invention provides an automated bobbin thread replenishing device 1 for use with two bobbin groups 2, so that a bobbin thread 10 with too little stock inside the bobbin group 2 will be cleared by the bobbin thread replenishing device 1, and then the bobbin thread replenishing device 1 will replenish the new bobbin thread 10 into the bobbin group 2. When the bobbin group 2 completes replenishing the bobbin thread 10, it will be moved by the bobbin thread replenishing device 1 to a rotary hook position on a sewing machine base 14.

[0063] See also Figure 2 As shown, the bobbin assembly 2 includes a bobbin 20 capable of winding the bottom thread 10 and a bobbin case 21 disposed outside the bobbin 20, wherein the bobbin 20 is provided with a bobbin 201 and two discs 202, and the two discs 202 are respectively connected to opposite ends of the bobbin 201, so that a winding space 203 is formed between the bobbin 201 and the two discs 202.

[0064] The bobbin case 21 includes a housing 211, a thread pressing spring 212, a spiral thread hanger 213, and a latch assembly 214. The housing 211 includes an annular wall 215, a sleeve 216, and a top cover 217 connected to the annular wall 215 and the sleeve 216, so that a receiving space 218 is formed between the annular wall 215, the sleeve 216, and the top cover 217. The annular wall 215 includes a wire groove 215a and a wire hole 215b. The thread pressing spring 212 is assembled on the outer side of the annular wall 215 to cover the wire hole 215b and the wire groove 215a. The spiral thread hanger 213 is assembled on an edge area of ​​the top cover 217. The latch assembly 214 is mounted on a central area of ​​the top cover 217, so that a latch mechanism is formed above the sleeve 216.

[0065] In which, the wire groove 215a has a first inclined area 215c and a second inclined area 215d, and the wire hole 215b is arranged at the end of the second inclined area 215d; the wire pressing spring 212 has an installation area 212a, a covering area 212b and a guide area 212c in sequence, the installation area 212a is locked to the annular wall portion 215, the covering area 212b is blocked on the outside of the second inclined area 215d, and the guide area 212c is bent to form a local area that can be away from the surface of the annular wall portion 215; the spiral wire hanger 213 has a connecting section 213a and a spiral section 213b.

[0066] Please refer to Figure 1 As shown, the bobbin thread replenishing device 1 includes a bobbin group changing machine 11, a bobbin thread cleaning machine 12 and a bobbin thread introducing machine 13, wherein the bobbin group changing machine 11 can move the bobbin group 2 from the above-mentioned rotary hook position to a replenishing position of the bobbin thread introducing machine 13, and allow the bobbin thread cleaning machine 12 to move close to the bobbin group 2 and clear the residual bobbin thread in the bobbin group 2. Subsequently, the bobbin thread introducing machine 13 replenishes the new bobbin thread into the bobbin group 2 and waits for the next time the bobbin group changing machine 11 exchanges the bobbin group 2 at the rotary hook position and the replenishing position.

[0067] See also Figure 3 、 Figures 4A to 4C As shown, the bottom thread introduction machine 13 includes a bobbin case fixing mechanism 3, a horizontal rotation mechanism 4, a bobbin core rotating mechanism 5, a bobbin core group separation mechanism 6, a thread hook swinging mechanism 7, a thread tension control mechanism 8 and a cutting mechanism 9.

[0068] Please refer to and Figure 5 As shown, the bobbin case fixing mechanism 3 has a movable base 30 and a support shaft 31 assembled on the movable base 30, wherein the movable base 30 has a bottom plate 32 and a wall plate 33, and the wall plate 33 has a first shaft hole 34 and a second shaft hole 35 extending along an X-axis direction (see FIG. Figure 4A ); the support shaft 31 is provided with a connecting section 31a, a first locking section 31b, a second locking section 31c and a positioning end 31d in descending order according to the rod diameter, the connecting section 31a is fixed to the first shaft hole 34, and the positioning end 31d is provided with a positioning ring groove that cooperates with the latch assembly 214, so that the bobbin case 21 can be assembled on the support shaft 31.

[0069] See also Figure 6As shown, the horizontal rotation mechanism 4 has a fixed base 40 supporting the movable base 30 and a rotation drive source 41, wherein the fixed base 40 has a substrate 401 and a support column 402 arranged between the substrate 401 and the movable base 30; and the rotation drive source 41 has a drive motor 411 assembled under the substrate 401 and a rotation shaft 412 passing through the inside of the support column 402, one end of the rotation shaft 412 is connected to the movable base 30, and the rotation shaft 412 is driven by the drive motor 411.

[0070] See also Figure 4A As shown, the bobbin rotating mechanism 5 includes a driving wheel 50 , a transmission assembly 51 , a first driving source 52 , a driving source lifting device 53 , a suction device 54 , a linear sensor 55 and a stop positioning device 56 .

[0071] See also Figure 7 As shown, the driving wheel 50 is rotatably connected to the support shaft 31, and has a gear portion 501 close to the wall panel 33, a positioning portion 502 away from the wall panel 33, and a sliding portion 503 located between the gear portion 501 and the positioning portion 502, wherein the sliding portion 503 has a stop groove 504 and a reflective surface 505; when the bobbin group 2 is installed on the support shaft 31, the bobbin 20 of the bobbin group 2 will be able to contact the positioning portion 502.

[0072] See also Figure 8 As shown, the transmission assembly 51 includes a transmission shaft 511, a transmission wheel 512 and a rubber wheel 513. The transmission shaft 511 is rotatably assembled in the second shaft hole 35 of the movable base 30; the transmission wheel 512 is assembled at a first end of the transmission shaft 511 to engage with the gear portion 501 of the driving wheel 50, wherein the length of the transmission wheel 512 is greater than the length of the gear portion 501; the rubber wheel 513 is assembled at a second end of the transmission shaft 511.

[0073] See also Figure 9 As shown, the first driving source 52 has a first driving motor 521 and a friction wheel 522 connected to the first driving motor 521, and the friction wheel 522 contacts the rubber wheel 513. When the first driving motor 521 rotates the friction wheel 522, the driving wheel 50 will be driven by the transmission assembly 51 and can rotate along the X-axis direction.

[0074] The driving source lifting device 53 comprises a first pneumatic cylinder 531 capable of lifting along a Z-axis direction and a lifting plate 532 mounted on the first pneumatic cylinder 531, wherein the first pneumatic cylinder 531 is mounted below the substrate 401, and the lifting plate 532 is located above the substrate 401; the lifting plate 532 is provided with a pressing portion 533 (see Figure 4A ), and the first driving source 52 is assembled on the lifting plate 532. When the lifting plate 532 is raised along the Z-axis by the first pneumatic cylinder 531, the friction wheel 522 connected to the first driving source 52 is synchronously moved to an operating position contacting the rubber wheel 513.

[0075] See also Figure 10 As shown, when the lifting plate 532 is lowered along the Z-axis direction by the first pneumatic cylinder 531 , the friction wheel 522 connected to the first driving source 52 can be synchronously moved to a standby position separated from the rubber wheel 513 .

[0076] See also Figure 11 As shown, the suction device 54 is equipped with a vacuum pump 541 and an exhaust pipe 542 connecting the vacuum pump 541 and the support shaft 31. The vacuum pump 541 is located below the fixed base 40, and the exhaust pipe 542 has a first section extending along the rotating shaft 412 and a second section extending along the movable base 30. As shown, the support shaft 31, the wall plate 33, and the drive wheel 50 are respectively formed with a first channel 311, a second channel 331, and a third channel 506. The exhaust pipe 542, the first channel 311, the second channel 331, and the third channel 506 collectively form an exhaust path. When the vacuum pump 541 draws air along the exhaust path, the bobbin 20 is vacuum-adsorbed onto the positioning portion 502 of the drive wheel 50.

[0077] See also Figure 12 As shown, the linear quantity sensing device 55 includes a first moving component 551, a second moving component 552 and an interrupting light sensor 553, wherein the first moving component 551 is provided with a contact rod 551a, a first spring 551b, a second spring 551c, and a lifting sleeve 551d, and the contact rod 551a is movably inserted into the lifting sleeve 551d, and the two ends of the first spring 551b respectively press against the contact rod 551a and the top surface of the lifting sleeve 551d, and the two ends of the second spring 551c respectively press against the lifting sleeve 551d and the bottom surface of the countersunk hole of the bottom plate 32, so that the contact rod 551a can move relative to the movable base 30 along the Z-axis direction.

[0078] The second moving assembly 552 includes a shielding member 552a movably assembled on the support column 402 and a third spring 552b disposed between the shielding member 552a and the base plate 401, wherein the shielding member 552a is located below the contact rod 551a and the pressing portion 533, so that the shielding member 552a can be pushed along the Z-axis by one of the contact rod 551a, the third spring 552b and the pressing portion 533. Figure 12 As shown, the lifting plate 532 is in a lowered state, and the shielding member 552a is pressed downward by the pressing portion 533, so that the third spring 552b is compressed to the shortest position.

[0079] The blocking light sensor 553 is mounted on the substrate 401 and forms a sensing area on a movement path of the blocking member 552a. Figure 13A and Figure 13B As shown in FIG. 5 , the lifting plate 532 is in an ascending state, and the pressing portion 533 rises to contact the lower end of the lifting sleeve 551 d, so that the second spring 551 c is compressed, and the pressing portion 533 moves away from the shielding member 552 a, so that the shielding member 552 a is pushed by the third spring 552 b and contacts the lower end of the contact rod 551 a. Figure 13A As shown, when the sensing area is shielded by the shielding member 552a, the blocking optical sensor 553 will generate a sensing signal indicating that the bobbin thread 10 has been wound sufficiently. The sensing signal will be received by a controller to stop the rotation of the first driving source 52. Figure 13B As shown, on the contrary, when the sensing area is not shielded by the shielding member 552 a , the first driving source 52 can continue to rotate the bobbin 20 to wind the bobbin thread 10 .

[0080] See also Figure 4A and Figure 14As shown, the stop positioning device 56 includes a positioning component 561, a positioning drive source 562 and a reflective light sensor 563, wherein the positioning component 561 has a stop pin 561a, a lever bracket 561b, a lever 561c and an elastic member 561d; the stop pin 561a is movably passed through the base plate 32, and the lever bracket 561b is connected to the bottom of the base plate 32; the center of the lever 561c is pivotally connected to the lever bracket 561b, and one end of the lever 561c is pressed against the bottom of the stop pin 561a with a fork; and the elastic member 561d is arranged between the base plate 32 and the other end of the lever 561c, and the elastic member 561d can generate an elastic force to push the stop pin 561a, so that the stop pin 561a will be moved up to insert into the stop groove 504 of the driving wheel 50.

[0081] The positioning drive source 562 is installed on the lifting plate 532 and can be lifted and lowered synchronously by the first pneumatic cylinder 531. The positioning drive source 562 has an electromagnet 562a, a contact piece 562b and a fourth spring 562c. The contact piece 562b is connected to the iron core of the electromagnet 562a, and the fourth spring 562c is arranged between the contact piece 562b and the electromagnet 562a; when the lifting plate 532 rises to the operating position and the electromagnet 562a is in the energized state, the contact piece 562b will be magnetically attracted by the electromagnet 562a and leave the lever 561c. At the same time, the stop pin 561a will be retained in the stop groove 504 of the sliding part 503 by the elastic piece 561d. Subsequently, the lifting plate 532 descends to the standby position, and the electromagnet 562a changes from the energized state to the de-energized state, so that the contact member 562b is pushed out by the fourth spring 562c.

[0082] See also Figure 15 As shown, when the lifting plate 532 rises and the battery iron 562 is still in the power-off state, the contact member 562b will push the lever 561c, so that the stop pin 561a is pulled away from the stop slot 504 of the sliding portion 503 by the lever 561c.

[0083] Please refer to Figure 14As shown, the reflective light sensor 563 is mounted on the base plate 401 and projects a light beam toward the sliding portion 503 of the drive wheel 50. The light beam is then reflected back to the reflective light sensor 563 by the reflective surface 505 of the sliding portion 503. When the bobbin 20 has wound a sufficient amount of bobbin thread 10, the reflective light sensor 563 helps determine the approximate rotation angle of the drive wheel 50. This allows the controller to generate a control signal to control the timing of energizing the electromagnet 562a and simultaneously stop the rotational power of the first drive source 52, thereby appropriately decelerating the drive wheel 50 and mitigating the impact force of the stop pin 561a when it is inserted into the stop slot 504.

[0084] See also Figure 16 As shown, the bobbin assembly separation mechanism 6 includes a sleeve 60, a connecting rod assembly 61, a displacement drive source 62, a return spring 63, a stop drive source 64, and a stop member 65. The drive wheel 50 is rotatably sleeved on the sleeve 60, and the sleeve 60 is movably sleeved on the support shaft 31, allowing the drive wheel 50 and the sleeve 60 to move axially relative to the support shaft 31. The connecting rod assembly 61 is swingably connected to the movable base 30. One end of the connecting rod assembly 61 is connected to the sleeve 60, and the other end of the connecting rod assembly 61 can be pushed by the displacement drive source 62 and the return spring 63. The displacement drive source 62 is assembled below the fixed base 40 and is equipped with a second pneumatic cylinder 622 including a pneumatic cylinder rod 621. The return spring 63 is assembled between the movable base 30 and the connecting rod assembly 61; the stop drive source 64 is installed below the displacement drive source 62, and has a connecting bracket 641 and a third pneumatic cylinder 642; and the stop member 65 can be selectively moved to a first position or a second position by the third pneumatic cylinder 642.

[0085] See also Figure 17 As shown, when the horizontal rotation mechanism 4 rotates, the connecting rod group 61, the sleeve 60, the return spring 63 and the bobbin case fixing mechanism 3 are all rotated together with the horizontal rotation mechanism 4; while the displacement drive source 62, the stop drive source 64 and the stop member 65 do not rotate together with the horizontal rotation mechanism 4.

[0086] See also Figure 18 As shown, when the pneumatic cylinder rod 621 of the second pneumatic cylinder 622 rises and pushes the connecting rod assembly 61, the connecting rod assembly 61 will compress the return spring 63 and pull the sleeve 60 at the same time, so that the sleeve 60 and the driving wheel 50 move backward along the X-axis direction. At this time, the bobbin core 20 will be moved to a winding position separated from the bobbin case 21.

[0087] See also Figure 19 As shown, when the pneumatic cylinder rod 621 of the second pneumatic cylinder 622 descends and leaves the connecting rod assembly 61, the connecting rod assembly 61 can be pushed by the return spring 63 to move the sleeve 60, so that the sleeve 60 and the driving wheel 50 can move forward together along the X-axis direction. At this time, the bobbin core 20 can be moved from the winding position to a combined position entering the interior of the bobbin case 21.

[0088] See also Figure 20 As shown, in order to increase the intermediate stop position of the movement between the bobbin core 20 and the bobbin case 21, during the descending process of the pneumatic cylinder rod 621 of the second pneumatic cylinder 622, the stopper 65 can be pushed from the second position to the first position by the third pneumatic cylinder 642, so that the pneumatic cylinder rod 621 is blocked by the stopper 65. At this time, the pneumatic cylinder rod 621 has not yet separated from the connecting rod assembly 61, so that the bobbin core 20 is moved by the return spring 63 to a loose position located between the winding position and the combined position.

[0089] See also Figure 21 As shown, when the stop member 65 is pulled back from the first position to the second position by the stop drive source 64, the pneumatic cylinder rod 621 of the second pneumatic cylinder 622 is released and moves downward again, so that the pneumatic cylinder rod 621 completely separates the connecting rod group 61. At this time, the bobbin 20 will be moved from the loose position to the combined position by the return spring 63.

[0090] See also Figure 22 As shown, the thread hook swing mechanism 7 includes a first support frame 70, a second driving source 71 and a wire hook 72, the first support frame 70 is connected to the fixed base 40, and the bottom line cleaning machine 12 is installed on the first support frame 70; the second driving source 71 is installed on one side of the first support frame 70, and the wire hook 72 is located on the other side of the first support frame 70 to connect to the second driving source 71, the wire hook 72 can be swung along a Y-axis direction by the second driving source 71, so that a wire hooking portion 721 of the wire hook 72 can contact the bottom line 10, wherein the wire hooking portion 721 faces the annular wall portion 215 of the bobbin case 21, and is respectively provided with a first hooking groove 722 and a second hooking groove 723 on both sides, so that the first hooking groove 722 of the wire hooking portion 721 can hook the bottom line 10 when swinging forward, and the second hooking groove 723 of the wire hooking portion 721 can hook the bottom line 10 when swinging backward.

[0091] See also Figure 23As shown, the line tension control mechanism 8 includes: a second support frame 80, a line tension adjustment component 81, a line tension sensing component 82 and a plurality of line clamps 83, wherein the second support frame 80 is connected to the fixed base 40, and the line tension adjustment component 81, the line tension sensing component 82 and the line clamps 83 are all arranged on the second support frame 80.

[0092] See also Figure 24A and Figure 24B As shown, the thread tension adjustment assembly 81 has a fixed thread hanging plate 811, a movable thread hanging plate 812, and an actuator 813. The bobbin thread 10 passes between the fixed thread hanging plate 811 and the movable thread hanging plate 812 to form a first length, and the actuator 813 can rotate the movable thread hanging plate 812 so that the first length of the bobbin thread 10 is changed to a second length. The thread tension sensing assembly 82 has a sensor 821 (see Figure 23 ), a contact detection plate 822, and a torsion spring 823. The sensor 821 detects whether the bobbin thread 10 is being fed. The contact detection plate 822 is electrically connected to a resistance detector (not shown) and triggers the resistance detector when the torsion spring 823 contacts the contact detection plate 822. The torsion spring 823 has a thread-hanging portion 824 for hanging the bobbin thread 10, allowing the torsion spring 823 to be pulled away from the contact detection plate 822 by the bobbin thread 10. The thread clamp 83 can be selected from at least one of a mechanical thread clamp and an electromagnetic thread clamp.

[0093] See also Figure 25 As shown, the cutter mechanism 9 includes a third support frame 90, a movable cutter 91, a fixed cutter 92, a thread clamping spring 93, and a cutter-pushing device 94. The third support frame 90 is connected to the fixed base 40. The movable cutter 91 is rotatably mounted on the drive wheel 50 and has a first pushing portion 911 and a second pushing portion 912. The fixed cutter 92 is connected to the drive wheel 50 and can cooperate with the movable cutter 91 to cut the bobbin thread 10. The thread clamping spring 93 is connected to the drive wheel 50 to press against the movable cutter 91 and clamp the bobbin thread 10.

[0094] The cutter pushing device 94 has a fourth pneumatic cylinder 941, a first connecting rod 942, a second connecting rod 943 and a push member 944, wherein the fourth pneumatic cylinder 941 is assembled on the fixed base 40; the center of the first connecting rod 942 is pivoted to the third support frame 90, and one side of the first connecting rod 942 is pivoted to the push member 944, and the other end of the first connecting rod 942 is pivoted to the fourth pneumatic cylinder 941; one end of the second connecting rod 943 is pivoted to the third support frame 90, and the other end of the second connecting rod 943 is pivoted to the push member 944.

[0095] See also Figure 26A As shown, when the fourth pneumatic cylinder 941 is in a contracted state, the push member 944 is lifted by the first connecting rod 942, and the push member 944 is swung by the second connecting rod 943 to present a tilted state; see Figure 26B As shown, on the contrary, when the fourth pneumatic cylinder 941 is in an extended state, the push member 944 is lowered by the first connecting rod 942, and the push member 944 is swung by the second connecting rod 943 to present a vertical state.

[0096] See also Figure 27A and Figure 27B As shown, the pushing member 944 has a first pushing block 945 and a second pushing block 946. When the pushing member 944 is actuated into the vertical state by the fourth pneumatic cylinder 941, the first pushing portion 911 of the movable cutter 91 can be pushed by the first pushing block 945 of the pushing member 944, so that the movable cutter 91 can leave between the fixed cutter 92 and the wire clamping spring 93 in a clockwise direction.

[0097] See also Figure 28A and Figure 28B As shown, in addition, after the driving wheel 50 and the movable cutter 91 are rotated by a set angle by the horizontal rotation mechanism 4, when the pushing member 944 is actuated by the fourth pneumatic cylinder 941 to the vertical state, the second pushing portion 912 of the movable cutter 91 can be pushed by the second pushing block 946 of the pushing member 944, so that the movable cutter 91 can enter the fixed cutter 92 in a counterclockwise direction.

[0098] See also Figures 29A to 29L The winding process of the lower thread introduction machine 13 of the present invention is shown.

[0099] First, see Figure 29AAs shown, the bobbin group changing machine 11 will move the bobbin group 2 to the bottom thread introducing machine 13, so that the bobbin case 21 of the bobbin group 2 is positioned at the positioning end 31d of the support shaft 31 (not shown in the figure), and then turn on the vacuum pump 541 so that the bobbin case 21 of the bobbin group 2 is vacuum adsorbed on the positioning portion 502 of the driving wheel 50. At this time, the thread end of the bottom thread 10 is clamped between the movable cutter 91 and the thread clamping spring 93.

[0100] See also Figure 29B As shown, the second pneumatic cylinder 622 will be activated to push the connecting rod assembly 61, so that the sleeve 60, the driving wheel 50 and the bobbin 20 will move backward to the winding position. Figure 29C As shown, the lifting plate 532 is lifted by the first pneumatic cylinder 531, so that the first driving source 52 and the positioning driving source 562 are moved to the operating position. At this time, the friction wheel 522 contacts the rubber wheel 513, and the contact member 562b presses against the lever 561c, so that the stop pin 561a is disengaged from the stop groove 504 of the sliding portion 503 (see FIG. Figure 15 ), and at the same time, the first moving component 551 of the thread amount sensing device 55 will be pushed upward by the pressing portion 533, so that the contact member 551a can enter the winding space 203 of the bobbin core 20.

[0101] See also Figure 29D As shown, the first driving source 52 will be activated, so that the bobbin 20 will be rotated to reel in the bottom thread 10. Figure 29E As shown, after winding the bottom thread 10 for dozens of turns, the first driving source 52 is stopped and the electromagnet 562a is energized, so that the contact member 562b moves to the right and disengages from the lever 561c. The stop pin 561a will be pushed upward by the elastic member 561d and inserted into the stop groove 504 of the sliding part 503, so that the driving wheel 50 stops rotating.

[0102] See also Figure 29F As shown, after the driving wheel 50 stops, the lifting plate 532 will be lowered by the first pneumatic cylinder 531, so that the first moving component 551 of the linear quantity sensing device 55 is moved downward by the second spring 551c. Figure 29G As shown, the displacement drive source 62 then drives the pneumatic cylinder rod 621 to descend, and the stop drive source 64 pushes the stop member 65 to move to the second position, so that the sleeve 60, the drive wheel 50 and the bobbin 20 are moved forward to the combined position by the return spring 63.

[0103] See also Figure 29HAs shown, the fourth pneumatic cylinder 941 will be activated, so that the first push block 945 of the push member 944 pushes the first push portion 911 of the movable cutter 91, and the movable cutter 91 will leave between the fixed cutter 92 and the thread clamping spring 93, so that the thread end of the bottom thread 10 is released.

[0104] See also Figure 29I As shown, the second pneumatic cylinder 622 will be activated again to push the connecting rod assembly 61, so that the sleeve 60, the driving wheel 50 and the bobbin 20 move backward to the winding position again. Figure 29J As shown, the first driving source 52 and the positioning driving source 562 move the driven source lifting device 53 to the operating position. At the same time, the contact rod 551a is pushed by the second spring 551c and inserted into the inside of the bobbin 20.

[0105] See also Figure 29K As shown, the first driving source 52 will be started, so that the bobbin 20 is fully wound with the bottom thread 10, wherein the thread end will be covered by the bottom thread 10 during the winding process, and the contact rod 551a is pushed downward by the bottom thread 10; at this time, the blocking member 552a will be synchronously pushed downward by the contact rod 551a, so that the sensing area of ​​the blocking light sensor 553 is blocked.

[0106] See also Figure 29L As shown, when the sensing area is blocked, the first driving source 52 will be powered off and stopped, and the electromagnet 562a will be activated at the same time, so that the stop pin 561a returns to the stop groove 504 of the sliding portion 503, thereby allowing the driving wheel 50 to stop rotating and stay in a fixed position. Figure 29M As shown, finally, the driving source lifting device 53 will lower the first driving source 52 and the positioning driving source 562 to the standby position.

[0107] See also Figures 30A to 30C The following figure shows the thread hooking process of the bottom thread introduction machine 13 of the present invention.

[0108] See also Figure 30A As shown, when the stop drive source 64 is not activated, the stop member 65 will stay in the first position to prevent the pneumatic cylinder rod 621 from moving downward. At the same time, the displacement drive source 62 drives the lower end of the pneumatic cylinder rod 621 to push against the stop member 65, so that the bobbin 20 will be moved from the winding position to the loosening position instead of directly entering the combined position.

[0109] See also Figure 30BAs shown, the rotation drive source 41 and the second drive source 71 are both activated to perform the first rotation, so that the bottom thread 10 is brought into the thread guide groove 215a of the bobbin case 21. As shown in the figure, the rotation drive source 41 rotates clockwise along the Z-axis by 10 degrees to 350 degrees, while the second drive source 71 rotates counterclockwise along the Y-axis by 315 degrees to 45 degrees. Figure 30C As shown, when the bottom thread 10 enters the wire groove 215a, the stop drive source 64 pushes the stop member 65 to the right to the second position, and then the displacement drive source 62 prompts the pneumatic cylinder rod 621 to continue to move downward to the extreme position, so that the bobbin 20 moves from the loose position to the combined position.

[0110] See also Figures 31A to 31N The threading process of the lower thread introduction machine 13 of the present invention is shown.

[0111] See also Figure 31A As shown, the second drive source 71 and the rotation drive source 41 are activated to perform a second rotational motion, causing the bobbin thread 10 to be raised to contact the thread pressing spring 212 of the bobbin case 21. As shown in the figure, the second drive source 71 rotates 315 degrees clockwise along the Y-axis to 0 degrees, and the rotation drive source 41 then rotates 10 degrees clockwise along the Z-axis to 340 degrees. Finally, the second drive source 71 rotates 115 degrees clockwise along the Y-axis to 115 degrees.

[0112] See also Figure 31B As shown, the rotation drive source 41 is started to perform a third rotation action, so that the bottom thread 10 is close to the outer peripheral surface of the bobbin case 21. As shown in the figure, the rotation drive source 41 is rotated 180 degrees to 160 degrees clockwise along the Z-axis direction.

[0113] See also Figure 31C As shown, the second drive source 71 and the rotation drive source 41 are activated to perform a fourth rotation, causing the bobbin thread 10 to be hooked on the guide area 212c of the thread pressing spring 212. As shown in the figure, the second drive source 71 rotates counterclockwise along the Y-axis by 20 degrees to 95 degrees, and the rotation drive source 41 rotates counterclockwise along the Z-axis by 110 degrees to 270 degrees.

[0114] See also Figure 31D As shown in the figure, the second driving source 71 is activated to perform the fifth rotation action, so that the bottom thread 10 is pulled into the thread path under the thread pressing spring 212. As shown in the figure, the second driving source 71 is rotated counterclockwise along the Y-axis direction by 95 degrees to 0 degrees, so that the bottom thread 10 is temporarily separated from the wire hook 72, and then the thread tension adjustment component 81 (see Figure 24B) starts to increase the length of the threading path of the bobbin thread 10, thereby increasing the tension of the bobbin thread 10 and allowing the bobbin thread 10 to be pulled into the wire hole 215b covered by the wire pressing spring 212.

[0115] See also Figure 31E As shown, the rotation drive source 41 and the second drive source 71 are activated to perform a sixth rotation, thereby further raising the bobbin thread 10. As shown in the figure, the rotation drive source 41 first rotates counterclockwise along the Z-axis by 45 degrees to 315 degrees, and the second drive source 71 then rotates clockwise along the Y-axis by 115 degrees to 115 degrees.

[0116] See also Figure 31F As shown, the rotation drive source 41 and the second drive source 71 are activated to perform a seventh rotation, causing the bobbin thread 10 to fall behind the spiral bobbin hanger 213. As shown in the figure, the rotation drive source 41 first rotates clockwise along the Z-axis by 135 degrees to 180 degrees, and the second drive source 71 then rotates counterclockwise along the Y-axis by 115 degrees to 0 degrees.

[0117] See also Figure 31G As shown, the rotation drive source 41 and the second drive source 71 are activated to perform the eighth rotation, causing the bobbin thread 10 to be hung at the base of the spiral thread hanger 213. As shown in the figure, the second drive source 71 first rotates clockwise along the Y-axis by 80 degrees to 80 degrees, and the rotation drive source 41 then rotates counterclockwise along the Z-axis by 90 degrees to 270 degrees.

[0118] See also Figure 31H As shown, the rotation drive source 41 and the second drive source 71 are activated to perform a ninth rotation, further raising the bobbin thread 10. As shown in the figure, the second drive source 71 first rotates clockwise along the Y-axis by 20 degrees to 100 degrees, and the rotation drive source 41 then rotates counterclockwise along the Z-axis by 90 degrees to 0 degrees.

[0119] See also Figure 31I As shown, the rotation drive source 41 is started to perform the tenth rotation action, so that the bottom thread 10 slides out from the spiral thread hanger 213. As shown in the figure, the rotation drive source 41 rotates counterclockwise from 630 degrees to 270 degrees along the Z-axis direction.

[0120] See also Figure 31J As shown, the second drive source 71 is activated and performs the eleventh rotation, causing the bobbin thread 10 to disengage the first hooking groove 722 of the wire hook 72, and the flat surface of the wire hook portion 721 presses the bobbin thread 10. As shown in the figure, the second drive source 71 rotates counterclockwise along the Y-axis by 390 degrees to an angle of 70 degrees.

[0121] See also Figure 31K As shown, the rotation drive source 41 is activated and performs a twelfth rotation, causing the bobbin case 21 to contact the bobbin thread 10 and push the bobbin thread 10 into the second hook groove 723 of the thread hook 72. As shown in the figure, the rotation drive source 41 rotates clockwise along the Z-axis by 90 to 180 degrees.

[0122] See also Figure 31L As shown, the rotation drive source 41 is activated to perform the thirteenth rotation, so that the bottom thread 10 is brought between the movable cutter 91 and the fixed cutter 92. As shown in the figure, the rotation drive source 41 rotates counterclockwise along the Z-axis direction from 205 degrees to 25 degrees.

[0123] See also Figure 31M As shown, the fourth pneumatic cylinder 941 will be activated, so that the second push block 946 of the push member 944 pushes the second push portion 912 of the movable cutter 91, and the movable cutter 91 will enter between the fixed cutter 92 and the thread clamping spring 93, so that the bottom thread 10 will be cut off, and at the same time the thread end will be clamped by the movable cutter 91 and the thread clamping spring 93.

[0124] See also Figure 31N As shown, the second drive source 71 and the rotary drive source 41 are activated for the fourteenth rotation. As shown in the figure, the second drive source 71 rotates 290 degrees clockwise along the Y-axis to 0 degrees, and the rotary drive source 41 rotates 25 degrees clockwise along the Z-axis to 0 degrees. Finally, the vacuum pump 541 is turned off, completing the bobbin assembly 2 bottom thread replenishment process, and waiting for the bobbin assembly changer 11 to move the bobbin assembly 2 to the hook position of the sewing machine (not shown).

[0125] In summary, the rotation drive source 41 of the present invention can simultaneously drive the bobbin case fixing mechanism 3, the driving wheel 50 and the transmission assembly 51, so that the bobbin core group 2 can be rotated along the Z-axis direction to generate multiple rotation strokes, allowing the bobbin case 21 to change from the annular wall portion 215 to a top cover portion 217 to face the thread hook portion 721; at the same time, the thread hook swinging mechanism 7 can swing along the Y-axis direction to generate multiple swing strokes, so that the bottom thread 10 can be introduced into the spiral thread hanger 213 from the thread groove 215a of the bobbin case 21 under the interactive cooperation of multiple swing strokes and multiple rotation strokes.

[0126] The above description is only illustrative of the present invention, and is not restrictive. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, and all of these will fall within the scope of protection of the present invention.

Claims

1. A bobbin thread introduction machine for automatically winding a bobbin thread, which allows a bobbin of a bobbin assembly to automatically wind a bobbin thread and pull the bobbin thread into a bobbin case of the bobbin assembly, characterized in that: The bottom line introduction machine comprises: a bobbin case fixing mechanism having a movable base and a support shaft assembled on the movable base, and the bobbin case is assembled on the support shaft; A bobbin rotating mechanism comprises a drive wheel, a transmission assembly, and a first drive source, wherein the drive wheel is sleeved on the support shaft and the bobbin is assembled on the drive wheel; the transmission assembly is connected to the drive wheel, and the first drive source is capable of driving the transmission assembly so that the drive wheel can be rotated along an X-axis by the first drive source, so that the bobbin thread can be wound inside the bobbin; a thread hook swing mechanism having a second driving source for driving a thread hook for hooking the bobbin thread, so that the thread hook can be swung along a Y-axis direction to generate a plurality of swing strokes, the thread hook having a thread hook portion capable of contacting the bobbin thread, and the thread hook portion facing an annular wall portion of the bobbin case; as well as a horizontal rotation mechanism having a fixed base supporting the bobbin case fixing mechanism and a rotational drive source, the rotational drive source being capable of simultaneously driving the bobbin case fixing mechanism, the drive wheel, and the transmission assembly, so that the bobbin assembly can be rotated along a Z-axis to generate a plurality of rotational strokes, allowing the bobbin case to face the thread hooking portion from the annular wall portion to a top cover portion; The multiple swing strokes generated by the thread hook swing mechanism can cooperate with the multiple rotation strokes generated by the horizontal rotation mechanism, so that the bottom thread can be introduced into a spiral thread hook of the bobbin case.

2. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 1, characterized in that: The transmission assembly comprises: a transmission shaft rotatably assembled to the movable base, having a first end and a second end; a transmission wheel connected to the first end, wherein the transmission wheel is engaged with a gear portion of the driving wheel; and A rubber wheel is connected to the second end and can contact a friction wheel of the first driving source.

3. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 2, characterized in that: The bobbin rotating mechanism further includes a driving source lifting device, which can drive the first driving source to rise and fall along the Z-axis direction, so that the friction wheel can selectively contact or separate from the rubber wheel.

4. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 2, characterized in that: The bobbin rotating mechanism also includes an adsorption device, which includes a vacuum pump and an exhaust pipe connected between the vacuum pump and the support shaft, so that the exhaust pipe, the driving wheel and the support shaft together form an exhaust path, allowing the bobbin to be vacuum-adsorbed on a positioning portion of the driving wheel.

5. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 1, characterized in that: The bobbin rotating mechanism further includes a thread quantity sensing device, the thread quantity sensing device including a first movable component, a second movable component, and an interruption-type light sensor, the first movable component being mounted on the movable base and movable relative to the movable base along the Z-axis direction so that a contact rod of the first movable component can enter the interior of the bobbin to contact the bottom thread; The second movable component is placed below the first movable component to assemble the horizontal rotation mechanism. The second movable component can be pushed along the Z-axis direction by the first movable component, so that a blocking member of the second movable component blocks a sensing area of ​​the blocking light sensor; the first movable component can be rotated along the Z-axis direction by the horizontal rotation mechanism, while the second movable component and the blocking light sensor are not driven to rotate by the horizontal rotation mechanism.

6. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 5, characterized in that: The bobbin rotating mechanism further comprises a stop positioning device, the stop positioning device comprising: a positioning assembly comprising a stop pin, a lever, and an elastic member, wherein the stop pin is insertable into a stop groove of the driving wheel, the two ends of the lever are respectively connected to the stop pin and the elastic member, and the elastic member is capable of generating an elastic force to push the stop pin; A positioning drive source can push a contact member to disengage the lever and allow the stop pin to be inserted into the stop groove.

7. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 1, characterized in that: The fixed base has a substrate and a support column arranged between the substrate and the movable base; and the rotation drive source has a drive motor assembled under the substrate and a rotating shaft passing through the inside of the support column, and the two ends of the rotating shaft are respectively connected to the movable base and the drive motor.

8. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 1, characterized in that: The bobbin thread introduction machine further comprises a bobbin set separation mechanism, the bobbin set separation mechanism comprising: a sleeve movably sleeved on the support shaft, and the driving wheel rotatably sleeved on the sleeve; a connecting rod assembly connected to the sleeve and the movable base so that the connecting rod assembly, the sleeve and the bobbin case fixing mechanism can all be rotated together by the horizontal rotation mechanism; a displacement drive source, connected to the fixed base and not rotating with the movable base, capable of selectively pushing the connecting rod assembly to cause the sleeve and the driving wheel to move backward along the X-axis, so that the bobbin can be moved to a winding position separated from the bobbin case; as well as A return spring is installed between the movable base and the connecting rod assembly, which can drive the sleeve and the driving wheel to move forward along the X-axis direction, so that the bobbin can be moved from the winding position to an assembled position inside the bobbin case.

9. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 8, characterized in that: The bobbin assembly separation mechanism further comprises: a stop drive source; and A stopper can be moved to a first position by the stop drive source to block a pneumatic cylinder rod of the displacement drive source, so that the bobbin can be moved to a loose position between the winding position and the combined position by the return spring, and the stopper can also be moved to a second position to release the pneumatic cylinder rod.

10. The bobbin thread introducing machine for automatically winding bobbin thread according to claim 1, characterized in that: The bottom thread introduction machine also includes a cutting mechanism, which includes a movable cutter, a fixed cutter, a thread clamping spring and a cutter pushing device. The movable cutter is rotatably mounted on the driving wheel and has a first pushing portion and a second pushing portion. The fixed cutter is connected to the driving wheel and can cooperate with the movable cutter to cut the bottom thread. The thread clamping spring is connected to the driving wheel to press against the movable cutter and clamp the bottom thread. The cutter pushing device can push the first pushing portion so that the movable cutter can enter between the fixed cutter and the thread clamping spring in a counterclockwise direction. The cutter pushing device can also push the second pushing portion so that the movable cutter can leave the fixed cutter in a clockwise direction.

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