CN211594598U

CN211594598U - Variable-rigidity automatic bobbin changing and feeding device of spinning machine

Info

Publication number: CN211594598U
Application number: CN201922382547.3U
Authority: CN
Inventors: 杨铁; 刘柱; 焦念东; 董策; 刘连庆
Original assignee: Shenyang Institute of Automation of CAS
Current assignee: Shenyang Institute of Automation of CAS
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-29
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to a spinning machine mechanism, in particular to a variable-rigidity automatic creel feeding device of a spinning machine.A creel automatic creel assembly is fixed on a rear bracket through a gear shaft, and completes the automatic exchange of full creels and empty creels and the loading and unloading of the full creels and the empty creels; the groove separating device and the line pressing device are respectively arranged in front of and at the side of the active driving roller, the negative pressure adsorption cavity and the line feeding device are arranged on the upper surface of the rear support, the groove separating device and the line pressing device ensure that waste silk threads can enter the negative pressure adsorption cavity, and the line feeding device completes automatic line feeding and waste silk breakage of an empty cylinder; the self-adaptive adjusting mechanism is communicated with the lower surface of the support and fixed, and the diameter-changing self-adaptive adjustment in the winding process of the roller is completed through the engagement/disengagement action of the gear transmission mechanism and the push-pull action of the disengaged rear air cylinder and the damping air spring. The utility model discloses can prolong the unmanned on duty's of spinning machine operating time one time, improve work efficiency, reduce extravagant spinning by a wide margin, practice thrift manpower and material cost.

Description

Variable-rigidity automatic bobbin changing and feeding device of spinning machine

Technical Field

The utility model belongs to the technical field of spinning machine structure and specifically relates to a spinning machine becomes automatic line loading unit that trades of rigidity realizes functions such as the automatic cylinder changing of traditional spinning machine, automatic line feeding, automatic waste silk line recovery, the adaptive adjustment of variable rigidity.

Background

The spinning machine can produce viscose rayon products with various specifications, can produce differential viscose filament yarns such as continuous spinning colored fibers, superfine denier fibers, foreign fibers, flat yarns, slub yarns and the like, and functional viscose filament yarns such as soybean protein viscose fibers, antibacterial fibers, far infrared absorption fibers, negative ions and the like, is particularly suitable for production and application of knitting, shuttleless looms and high-speed looms, and is an ideal raw material for high-grade silk fabrics such as knitting, clothes, decoration and the like. The traditional spinning machine forms a production line according to grouping, generally 3 workers are required to cooperate, and full bobbin recovery and loading and online of empty bobbins are manually carried out once at intervals (about 8-12 hours and different); this process results in a great deal of manpower and waste of spinning materials, and improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that traditional spinning machine exists because of manually operation, an object of the utility model is to provide an automatic line feeding unit that trades of spinning machine variable rigidity. The device is applicable to marshalling and forms the production line, only needs 1 workman can accomplish the recovery of full section of thick bamboo and the loading of empty section of thick bamboo through the device, and the unmanned on duty's of spinning machine operating time can prolong one time, improves work efficiency, reduces extravagant spinning by a wide margin, practices thrift manpower and material cost.

The purpose of the utility model is realized through the following technical scheme:

the utility model discloses a support and install automatic creeling subassembly, automatic line feeding subassembly and the self-adaptation adjustment mechanism on this support respectively, wherein automatic creeling subassembly includes swing arm, swinging boom driving motor, belt pulley drive mechanism, swing arm driving motor, gear drive mechanism, full section of thick bamboo, empty section of thick bamboo and direction gag lever post, and this swinging boom driving motor and swinging boom driving motor install on the support respectively, the lower part of swinging boom rotates with the support to be connected, and passes through gear drive mechanism and swing arm driving motor's output links to each other, and the upper end of this swinging boom rotates and is connected with the swinging boom, and the upper end of swinging boom is connected with the direction gag lever post; the two ends of the rotating arm are respectively and rotatably provided with a full cylinder and an empty cylinder, and the rotating arm is connected with the output end of a rotating arm driving motor through the belt pulley transmission mechanism; the automatic wire feeding assembly comprises a wire groove separating device, a wire pressing device, a negative pressure adsorption cavity, a wire feeding device, a main driving roller and a sheet metal part, the sheet metal part is used as an installation base and fixed on the support, the wire groove separating device comprises a wire groove separating motor, a swing rod and a limiting upright post, the wire groove separating motor is fixed on the sheet metal part, the output end of the wire groove separating motor is connected with one end of the swing rod, the other end of the swing rod is a free end, and the limiting upright post which is installed on the sheet metal part and used for positioning spinning together with the swing rod is arranged on one side of; the wire pressing device comprises a wire pressing motor, a motor connecting rod and a wire pressing rod, wherein the motor connecting rod is rotatably arranged on the sheet metal part, one end of the motor connecting rod is connected with the output end of the wire pressing motor fixed on the sheet metal part, and the other end of the motor connecting rod is connected with the wire pressing rod; the wire feeding device comprises a wire feeding motor, a wire poking rod, a wire feeding cutter and a cutting cutter, wherein the wire feeding motor is fixed on the support, the output end of the wire feeding motor is connected with the wire poking rod, and the wire poking rod is respectively provided with the wire feeding cutter, a full-barrel cutting cutter and an empty-barrel cutting cutter; a negative pressure adsorption cavity is arranged on the sheet metal part between the on-line motor and the line pressing motor; the main driving roller is positioned between the wire feeding device and the wire pressing device and is rotatably arranged on the sheet metal part; one end of the guide limiting rod is connected with the upper part of the swing arm, and the other end of the guide limiting rod is connected with the sheet metal part through an adjusting bolt; the self-adaptive adjusting mechanism comprises a damping gas spring and an air cylinder, one end of the damping gas spring and one end of the air cylinder are respectively hinged to the support, the other end of the damping gas spring and the other end of the air cylinder are hinged to one end of a connecting rod, and the other end of the connecting rod is connected with the gear transmission mechanism.

Wherein: a strip-shaped hole is formed in the guide limiting rod along the length direction, an adjusting bolt connected with a sheet metal part is arranged in the strip-shaped hole, the guide limiting rod is fixedly connected with the sheet metal part through the adjusting bolt, and the position of the swing arm is limited not to move excessively.

The belt pulley transmission mechanism comprises a large belt pulley, a small belt pulley and a belt, the output end of the rotating arm driving motor is connected with the small belt pulley, the rotating arm is rotatably connected with the upper part of the swinging arm through a rotating shaft, the rotating shaft is linked with the large belt pulley, and the large belt pulley is connected with the small belt pulley through the belt.

The gear transmission mechanism comprises a small sector gear and a large sector gear, a gear shaft of the large sector gear is fixedly connected to the lower part of the swing arm, and the gear shaft of the large sector gear is rotationally connected to the bracket; the output end of the swing arm driving motor is connected with a small sector gear, and a toothed part of the large sector gear is in meshing transmission with a toothed part of the small sector gear; the other end of the connecting rod is connected to the large sector gear.

And an electronic limit switch is arranged at the lower part of the swinging arm.

The limiting upright post is vertical to the axial direction of the main driving roller, the swing rod is driven by the wire groove separating motor to rotate from a horizontal state to a vertical state, and spinning is extruded between the swing rod and the limiting upright post through the swing rod and then enters the wire groove of the empty cylinder on one side of the empty cylinder.

When the swing rod is in a horizontal state, the axial direction of the swing rod is parallel to the axial direction of the main driving roller, and the axial direction of the wire pressing rod is parallel to the axial direction of the main driving roller.

The wire groove disengaging device is located on one side of the main driving roller in the radial direction, and the wire pressing device is located on one side of the main driving roller in the axial direction.

The full-barrel cutting-off tool and the empty-barrel cutting-off tool are respectively positioned at two sides of the wire pulling rod, and the empty-barrel cutting-off tool is positioned in front of the full-barrel cutting-off tool in the length direction of the wire pulling rod.

The utility model discloses an advantage does with positive effect:

1. the automatic cylinder changing assembly is reasonable in design, the self-adaptive adjusting function of the automatic cylinder changing assembly is realized by adopting the structures of the double sector gears, the driving air cylinder, the passive damping air springs, the slide ways and the like, the self-adaptive adjustment of the main driving roller and the spinning cylinder in the diameter changing process of the winding of the roller is solved, the contact pressure of the roller and the main driving roller is kept in a reasonable range in the whole process, the mechanism complexity is simplified, and the system operation stability is improved.

2. According to the invention, the rotary motion of the motor-driven pressing rod and the wire pulling rod is adopted to replace complex manual multidimensional space motion, so that the automatic recovery of waste spinning and the automatic on-line and off-line functions of an empty cylinder are realized, the unattended time of a production line is prolonged, the working efficiency is improved, the waste of spinning is greatly reduced, and the labor and material costs are saved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the automatic creel assembly of the present invention;

FIG. 3 is a second schematic structural view of the automatic creel assembly of the present invention;

FIG. 4 is a schematic structural view of the automatic wire feeding assembly of the present invention;

FIG. 5 shows the structure of the automatic wire feeding assembly of the present invention

Wherein: 100 is an automatic creeling assembly, 101 is a swing arm, 102 is a swing arm, 103 is a creeling clamping device, 104 is a guide limit rod, 105 is a swing arm driving motor, 106 is a belt pulley transmission mechanism, 107 is a swing arm driving motor, 108 is a gear, 109 is a sector gear, 110 is an electronic limit switch, 113 is a gear shaft, 114 is a rotating shaft, 115 is a full bobbin, 116 is an empty bobbin, 117 is a strip-shaped hole, and 118 is a connecting rod;

200 is an automatic wire feeding assembly, 201 is a wire groove separation motor, 202 is a swing rod, 203 is a limiting upright post, 204 is a wire pressing motor, 205 is a wire pressing rod, 206 is a wire feeding cutter, 207 is a negative pressure adsorption cavity, 208 is a wire feeding motor, 209 is a wire poking rod, 210 is a cutting-off cutter, and 211 is a motor connecting rod;

300 is a self-adapting adjusting mechanism, 301 is a damping gas spring, and 302 is a cylinder;

401 is a support, 402 is a sheet metal part, 403 is spinning, 404 is a main driving roller, and 405 is an empty bobbin wire groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present invention includes a bracket 401, and an automatic creeling assembly 100, an automatic feeding assembly 200 and an adaptive adjusting mechanism 300 respectively mounted on the bracket 401, wherein the automatic creeling assembly 100 is fixed on the bracket 401 through a gear shaft 113, and completes the automatic exchange between a full bobbin 115 and an empty bobbin 116, and the loading and unloading of the full bobbin 115 and the empty bobbin 116; the automatic threading assembly 200 comprises a slot disengaging device, a thread pressing device, a negative pressure adsorption cavity 207 and a threading device, wherein the slot disengaging device and the thread pressing device are respectively arranged in front of and at the side of the main driving roller 404 (namely the slot disengaging device is arranged at one side of the main driving roller 404 in the radial direction, and the thread pressing device is arranged at one side of the main driving roller 404 in the axial direction), the negative pressure adsorption cavity 207 and the threading device are arranged on the upper surface of the bracket 401, the slot disengaging device and the thread pressing device ensure that waste silk threads can enter the negative pressure adsorption cavity 207, and the threading device finishes automatic threading and waste silk breakage of the empty cylinder 116; the self-adaptive adjusting mechanism 300 is respectively fixed with the sector gear 109 and the lower surface of the bracket 401 through the air cylinder 302 and the damping gas spring 301, and the diameter-changing self-adaptive adjustment in the drum winding process is completed through the engagement/disengagement action of the sector gear 109 and the gear 108 and the push-pull power of the disengaged air cylinder 302 and the damping gas spring 301; the automatic creeling of the production line of the spinning machine is completed through a reasonable time sequence action method of the automatic creeling assembly 100, the automatic feeding assembly 200 and the self-adaptive adjusting mechanism 300.

The automatic creeling assembly 100 of this embodiment includes a swing arm 101, a swing arm 102, a swing arm driving motor 105, a belt pulley transmission mechanism 106, a swing arm driving motor 107, a gear transmission mechanism, a full cylinder 115, an empty cylinder 116 and a guiding limit rod 104, where the swing arm driving motor 105 and the swing arm driving motor 107 are respectively mounted on a support 401, the lower portion of the swing arm 101 is rotatably connected with the support 401 and is connected with the output end of the swing arm driving motor 107 through the gear transmission mechanism, the upper end of the swing arm 101 is rotatably connected with the swing arm 102, and the upper end of the swing arm 101 is connected with the guiding limit rod 104; the two ends of the rotating arm 102 are respectively rotatably provided with a full cylinder 115 and an empty cylinder 116, and the rotating arm 102 is connected with the output end of a rotating arm driving motor 105 through a belt pulley transmission mechanism 106. The belt pulley transmission mechanism 106 of this embodiment includes a large belt pulley, a small belt pulley, and a belt, the small belt pulley is connected to the output end of the rotating arm driving motor 105, the rotating arm 102 is rotatably connected to the upper portion of the swinging arm 101 through a rotating shaft 114, the large belt pulley is linked to the rotating shaft 114, and the large belt pulley is connected to the small belt pulley through the belt. The gear transmission mechanism of the present embodiment includes a small sector gear 108 and a large sector gear 109, wherein a gear shaft of the large sector gear 109 is fixedly connected to a lower portion of the swing arm 101, and the gear shaft of the large sector gear 109 is rotatably connected to the bracket 401; a small sector gear 108 is connected to the output end of the swing arm drive motor 107, and the toothed part of the large sector gear 109 is in mesh transmission with the toothed part of the small sector gear 108; the other end of link 118 is connected to large sector gear 109. The lower portion of the swing arm 101 of the present embodiment is mounted with an electronic limit switch 110. The barrel shaft of the full barrel 115 and the barrel shaft of the empty barrel 116 of the embodiment are respectively and fixedly connected to two ends of the rotating arm 102, and the barrel-changing and clamping devices 103 are mounted at two ends of the rotating arm 102 and used for manual loading and unloading of the full barrel 115 and the empty barrel 116; the tube changing clamping device 103 of the embodiment is a prior art.

The automatic wire feeding assembly 200 of the embodiment comprises a wire groove separating device, a wire pressing device, a negative pressure adsorption cavity 207, a wire feeding device, a main driving roller 404 and a sheet metal part 402, wherein the sheet metal part 402 is used as an installation base and fixed on a support 401, the wire groove separating device comprises a wire groove separating motor 201, a swing rod 202 and a limiting upright column 203, the wire groove separating motor 201 is fixed on the sheet metal part 402, the output end of the wire groove separating motor is connected with one end of the swing rod 202, the other end of the swing rod 202 is a free end, and one side of the swing rod 202 is provided with the limiting upright column 203 which is arranged on the sheet metal part 402 and used; the wire pressing device comprises a wire pressing motor 204, a motor connecting rod 211 and a wire pressing rod 205, wherein the motor connecting rod 211 is rotatably arranged on the sheet metal part 402, one end of the motor connecting rod 211 is connected with the output end of the wire pressing motor 204 fixed on the sheet metal part 402, and the other end of the motor connecting rod is connected with the wire pressing rod 205; the wire feeding device comprises a wire feeding motor 208, a wire shifting rod 209, a wire feeding cutter 206 and a cutting cutter 210, the wire feeding motor 208 is fixed on the support 401, the output end of the wire feeding motor is connected with the wire shifting rod 209, the wire shifting rod 209 is respectively provided with the wire feeding cutter 206, a full-barrel cutting cutter 210 and an empty-barrel cutting cutter 212, the full-barrel cutting cutter 210 and the empty-barrel cutting cutter 212 are respectively positioned at two sides of the wire shifting rod 209, and the empty-barrel cutting cutter 212 is positioned in front of the full-barrel cutting cutter 210 in the length direction of the wire shifting rod 209; a negative pressure adsorption cavity 112 is arranged on the sheet metal part 402 between the wire feeding motor 208 and the wire pressing motor 204; the main driving roller 404 is positioned between the wire feeding device and the wire pressing device and is rotatably arranged on the sheet metal part 402; one end of the guide limit rod 104 is connected with the upper part of the swing arm 101, and the other end is connected with the sheet metal part 402 through an adjusting bolt. The guide limiting rod 104 of this embodiment is provided with a strip-shaped hole 117 along the length direction, an adjusting bolt connected with the sheet metal part 402 is arranged in the strip-shaped hole 117, and the guide limiting rod 104 is fixedly connected with the sheet metal part 402 through the adjusting bolt to limit the position of the swing arm 101 from moving too little. The limit upright 203 of the embodiment is perpendicular to the axial direction of the main driving roller 404, the swing link 202 is driven by the thread groove disengaging motor 201 to rotate from a horizontal state to a vertical state, and the spinning thread 403 is extruded between the swing link 202 and the limit upright 203 through the swing link 202 and then enters the empty bobbin thread groove 405 on one side of the empty bobbin 116. When the swing link 202 of the present embodiment is in a horizontal state, the axial direction thereof is parallel to the axial direction of the main driving roller 404, and the axial direction of the line pressing rod 205 is parallel to the axial direction of the main driving roller 404.

The adaptive adjustment mechanism 300 of the present embodiment includes a damping gas spring 301 and a cylinder 302, wherein one end of the damping gas spring 301 and one end of the cylinder 302 are respectively hinged to the bracket 401, the other ends of the damping gas spring 301 and the cylinder 302 are both hinged to one end of the connecting rod 118, and the other end of the connecting rod 118 is connected to the gear transmission mechanism.

The utility model discloses a theory of operation does:

the swing arm 101 can rotate around the gear shaft 113 through the cooperation of the swing arm driving motor 107, the gear 108 and the sector gear 109, and the function of separating the full drum 115 from the main driving roller 404 and separating the empty drum 116 from the main driving roller 404 is fulfilled. The rotating arm 102 can rotate around a rotating shaft 114 through a rotating arm driving motor 105 and a belt pulley transmission mechanism 106, and station exchange of a full bobbin 115 and an empty bobbin 116 is completed. The utility model has two limits, wherein the electronic limit switch 110 is used for triggering corresponding control signals; the guide limit lever 104 is used to ensure that the swing arm 101 is not over-moved in the event of a failure of the electronic switch 110.

The swing rod 202 is fixed at the front end of the sheet metal part 402 through a wire slot disengaging motor 201 and driven by the wire slot disengaging motor 201 to swing between a horizontal state and a vertical state, when the swing rod 202 is in the horizontal state, the spinning filament 403 automatically enters the empty bobbin wire slot 405 on one side of the empty bobbin 116, the swing rod 202 is lifted, and the spinning filament 403 automatically disengages from the empty bobbin wire slot 405. When the swing rod 202 is in the vertical position, the spinning filament 403 is extruded between the swing rod 202 and the limit upright column 203 for positioning. The wire pressing rod 205 is connected with the wire pressing motor 204 through the motor connecting rod 211, the function of the wire pressing rod is that the stations are exchanged after the cylinder is full, the spinning 403 is pressed into the negative pressure adsorption cavity 207, the wire pressing motor 204 is fixed at the side end of the sheet metal part 402 through the connecting plate, the negative pressure adsorption cavity 207 is installed on the upper surface of the support 401, and the spinning 403 is adsorbed. The wire poking rod 209 is connected with the wire feeding motor 208 and driven to rotate by the wire feeding motor 208, the wire feeding motor 208 is fixed on the upper surface of the support 401 through a connecting plate, when the empty cylinder 116 contacts the main driving roller 404, the wire poking rod 209 moves, the wire feeding knife 206 brings the spinning 403 into the empty cylinder, the full cylinder cutting knife 210 or the empty cylinder cutting knife 212 cuts off the spinning 403, the wire pressing rod 205 moves, the spinning 403 is limited in the empty cylinder wire groove 405 through the limiting column 203, and automatic wire feeding is completed.

The large sector gear 109 can be engaged with and disengaged from the small sector gear 108 and is driven by a swing arm drive motor 107; when the large sector gear 109 and the small sector gear 108 are in a meshed state, the swing arm 101 is in a rigid motion state; when the large sector gear 109 and the small sector gear 108 are in a disengaged state, the swing arm 101 is in an elastic movement state under the action of the damping gas spring 301, so that the variable stiffness self-adaptive adjustment is realized. The cylinder 302 is used for guiding the limiting rod 104 to provide additional driving force when the friction force is too large during movement.

Claims

1. The utility model provides a spinning machine becomes automatic line loading attachment that trades of rigidity which characterized in that: comprises a bracket (401), an automatic tube-changing component (100), an automatic wire-feeding component (200) and an adaptive adjusting mechanism (300) which are respectively arranged on the bracket (401), wherein the automatic creeling assembly (100) comprises a swing arm (101), a swing arm (102), a swing arm driving motor (105), a belt pulley transmission mechanism (106), a swing arm driving motor (107), a gear transmission mechanism, a full bobbin (115), an empty bobbin (116) and a guide limiting rod (104), the rotating arm driving motor (105) and the swinging arm driving motor (107) are respectively arranged on a bracket (401), the lower part of the swinging arm (101) is rotatably connected with the bracket (401), and is connected with the output end of a swing arm driving motor (107) through the gear transmission mechanism, the upper end of the swing arm (101) is rotatably connected with a swing arm (102), and the upper end of the swing arm (101) is connected with a guide limiting rod (104); both ends of the rotating arm (102) are respectively and rotatably provided with a full cylinder (115) and an empty cylinder (116), and the rotating arm (102) is connected with the output end of a rotating arm driving motor (105) through the belt pulley transmission mechanism (106); the automatic wire feeding assembly (200) comprises a wire groove separating device, a wire pressing device, a negative pressure adsorption cavity (207), a wire feeding device, a main driving roller (404) and a sheet metal part (402), the sheet metal part (402) is used as an installation base and is fixed on the support (401), the wire groove separating device comprises a wire groove separating motor (201), a swing rod (202) and a limiting upright post (203), the wire groove separating motor (201) is fixed on the sheet metal part (402), the output end of the wire groove separating motor is connected with one end of the swing rod (202), the other end of the swing rod (202) is a free end, and one side of the swing rod (202) is provided with the limiting upright post (203) which is arranged on the sheet metal part (402) and used for positioning a spinning thread (403) together with the swing; the wire pressing device comprises a wire pressing motor (204), a motor connecting rod (211) and a wire pressing rod (205), wherein the motor connecting rod (211) is rotatably arranged on the sheet metal part (402), one end of the motor connecting rod is connected with the output end of the wire pressing motor (204) fixed on the sheet metal part (402), and the other end of the motor connecting rod is connected with the wire pressing rod (205); the wire feeding device comprises a wire feeding motor (208), a wire shifting rod (209), a wire feeding cutter (206) and a cutting-off cutter (210), the wire feeding motor (208) is fixed on the support (401), the output end of the wire feeding motor is connected with the wire shifting rod (209), and the wire feeding cutter (206), the full-barrel cutting-off cutter (210) and the empty-barrel cutting-off cutter (212) are respectively arranged on the wire shifting rod (209); a negative pressure adsorption cavity (112) is arranged on a sheet metal part (402) between the wire feeding motor (208) and the wire pressing motor (204); the main driving roller (404) is positioned between the wire feeding device and the wire pressing device and is rotatably arranged on the sheet metal part (402); one end of the guide limiting rod (104) is connected with the upper part of the swing arm (101), and the other end of the guide limiting rod is connected with the sheet metal part (402) through an adjusting bolt; the self-adaptive adjusting mechanism (300) comprises a damping gas spring (301) and a cylinder (302), one end of the damping gas spring (301) and one end of the cylinder (302) are hinged to the support (401) respectively, the other ends of the damping gas spring (301) and the cylinder (302) are hinged to one end of a connecting rod (118), and the other end of the connecting rod (118) is connected with the gear transmission mechanism.

2. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: a strip-shaped hole (117) is formed in the guide limiting rod (104) along the length direction, an adjusting bolt connected with a sheet metal part (402) is arranged in the strip-shaped hole (117), the guide limiting rod (104) is fixedly connected with the sheet metal part (402) through the adjusting bolt, and the position of the swing arm (101) is limited from moving too little.

3. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: belt pulley drive mechanism (106) are including big belt pulley, belt lace wheel and belt, the output of swinging arm driving motor (105) is connected with the belt lace wheel, the upper portion rotation of swinging arm (101) is connected through rotation axis (114) in swinging arm (102), and the interlock has big belt pulley on this rotation axis (114), big belt pulley passes through the belt and links to each other with the belt lace wheel.

4. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: the gear transmission mechanism comprises a small sector gear (108) and a large sector gear (109), a gear shaft of the large sector gear (109) is fixedly connected to the lower part of the swing arm (101), and the gear shaft of the large sector gear (109) is rotatably connected to the bracket (401); the output end of the swing arm driving motor (107) is connected with a small sector gear (108), and the toothed part of the large sector gear (109) is in meshing transmission with the toothed part of the small sector gear (108); the other end of the connecting rod (118) is connected to the large sector gear (109).

5. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: and an electronic limit switch (110) is arranged at the lower part of the swing arm (101).

6. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: the limiting upright post (203) is vertical to the axial direction of the main driving roller (404), the swing rod (202) is driven by the wire groove disengaging motor (201) to rotate from a horizontal state to a vertical state, and the spinning yarn (403) is extruded between the swing rod (202) and the limiting upright post (203) through the swing rod (202) and then enters the wire position groove (405) of the empty drum (116) on one side.

7. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: when the swing rod (202) is in a horizontal state, the axial direction of the swing rod is parallel to the axial direction of the main driving roller (404), and the axial direction of the wire pressing rod (205) is parallel to the axial direction of the main driving roller (404).

8. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: the wire groove disengaging device is positioned on one side of the main driving roller (404) in the radial direction, and the wire pressing device is positioned on one side of the main driving roller (404) in the axial direction.

9. The variable-rigidity automatic bobbin changing threading device of the spinning machine according to claim 1, which is characterized in that: the full-cylinder cutting knife (210) and the empty-cylinder cutting knife (212) are respectively positioned on two sides of the wire poking rod (209), and the empty-cylinder cutting knife (212) is positioned in front of the full-cylinder cutting knife (210) in the length direction of the wire poking rod (209).