CN115161817A

CN115161817A - Spinning frame

Info

Publication number: CN115161817A
Application number: CN202210723177.9A
Authority: CN
Inventors: 王条英; 方正伟; 陈国美
Original assignee: Hangzhou Fengyi Textile Co ltd
Current assignee: Hangzhou Fengyi Textile Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-10-11
Anticipated expiration: 2042-06-24
Also published as: CN115161817B

Abstract

The application discloses a spinning frame, which relates to the field of spinning and comprises a frame and a plurality of drafting frames arranged on the frame, wherein the drafting frames are provided with a feeding roller and an output roller which are rotatably connected with the plurality of drafting frames, the axes of the feeding roller and the output roller are parallel to each other, the drafting frames are also provided with two matching rollers used for abutting against the feeding roller or the output roller, the drafting frames are rotatably connected with adjusting rods of the plurality of drafting frames, the adjusting rods are positioned between the output roller and the feeding roller, and the axes of the adjusting rods are parallel to the axis of the output roller; the side wall of the adjusting rod is rotatably connected with an adjusting pulley corresponding to the drafting frame, and the axis of the adjusting pulley is parallel to the output roller; the adjusting pulley is abutted against the rough yarn; the machine body is provided with a driving motor which is used for driving the adjusting rod to rotate so as to act on the roving. The drafting device has the effects of facilitating the adjustment of the drafting device by workers and reducing the possibility of end breakage rate.

Description

Spinning frame

Technical Field

The invention relates to the field of spinning, in particular to a spinning frame.

Background

In the spinning frame, a spinning machine which draws, twists and winds a semi-finished roving or sliver into a spun yarn bobbin is called a fine sand machine. The spinning machine comprises a feeding device for feeding coarse sand, a drafting device for drawing the coarse sand Cheng Xisha, and a taking-off device for taking off the ring bobbin.

In the related technology, the breakage rate has a great relationship with the working efficiency of a spinning frame; the occurrence of the broken ends can be caused by the excessive stretching of the roving by the drafting device; however, in the process of adjusting the drafting device, a worker needs to adjust the surface rotating speed of the output roller or the feeding roller of the drafting device or other parameters, and the operation process is complicated.

Disclosure of Invention

In order to facilitate the adjustment of a drafting device by workers and reduce the possibility of the broken end rate, the application provides the spinning machine.

The application provides a spinning frame adopts following technical scheme:

a spun yarn comprises a machine body and a plurality of drafting frames arranged on the machine body, wherein the drafting frames are provided with a feeding roller and an output roller which are rotatably connected with the drafting frames, the axes of the feeding roller and the output roller are parallel to each other, the drafting frames are also provided with two matching rollers used for abutting against the feeding roller or the output roller, the drafting frames are rotatably connected with adjusting rods of the drafting frames, the adjusting rods are positioned between the output roller and the feeding roller, and the axes of the adjusting rods are parallel to the axis of the output roller; the side wall of the adjusting rod is rotatably connected with adjusting pulleys which correspond to the drafting frames one by one, and the axis of each adjusting pulley is parallel to the output roller; the adjusting pulley is abutted against the rough yarn; the machine body is provided with a driving motor which is used for driving the adjusting rod to rotate so as to act on the roving.

By adopting the technical scheme, before feeding the rough yarns, a worker can firstly judge whether the rough yarns in the same batch and the rough yarns in the previous batch have large differences in the aspects of thickness, strength and the like, then the regulation rod is rotated through the driving motor, the adjustment pulley is driven to rotate around the axis of the regulation rod by the rotation of the regulation rod, so that the distance from the rough yarns entering the feeding roller to the output roller can be prolonged or shortened by the regulation pulley, the effect that the rough yarns are dragged by the drafting device with different strengths is realized, and the regulation rod is connected with the plurality of drafting frames, so that all the rough yarns can be regulated by the rotation regulation rod; the convenience of synchronously adjusting the stretching degree of the roving is realized.

Optionally, sleeves corresponding to the draft frames one to one are sleeved on the adjusting rod, the adjusting pulleys are connected to the sleeves, and a fixing assembly for fixing the sleeves and the adjusting rod is arranged between the sleeves and the adjusting rod; the machine body is rotatably connected with a secondary rod, and the axis of the secondary rod is parallel to the axis of the adjusting rod; a first gear is fixed on the sleeve, a plurality of second gears are arranged on the secondary rod, and the first gears and the second gears are in one-to-one correspondence and are meshed with each other; the second gear can slide along the length direction of the secondary rod to realize the engagement or disengagement of the first gear.

By adopting the technical scheme, after the working personnel adjust the rotation angle of the whole adjusting pulley, the adjustment of a single or partial adjusting pulley can be realized by adjusting the secondary rod; when adjusting, the adjusting pulley which is not partially adjusted moves the corresponding second gear, so that the second gear is separated from the first gear; but keep the intermeshing of one of them first gear and second gear that need not to rotate the adjusting pulley, realize temporarily fixing secondary pole, then for the adjusting pulley that needs to adjust, it acts on corresponding fixed subassembly, realize sleeve and adjusting lever not to be connected, because secondary pole is by one of them first gear and second gear joint of intermeshing, therefore when fixed subassembly breaks away from, the sleeve that connects to needs to adjust the adjusting pulley also can not rotate, after confirming the adjusting pulley that needs to adjust that finishes, again need not to adjust first gear and the second gear on the sleeve break away from the meshing again, the hand is held secondary pole and is rotated secondary pole, realize to the rotation of part adjusting pulley, finally reconnect fixed subassembly to sleeve and adjusting lever again.

Optionally, the adjusting rod is provided with a plurality of first key slots corresponding to the sleeve, the inner wall of the sleeve is provided with a plurality of second key slots, and the second key slots are uniformly distributed along the circumferential direction of the sleeve; the fixing assembly comprises a connecting key which is arranged on the adjusting rod in a sliding mode and is positioned in the first key groove, and the connecting key is positioned in one of the second key grooves; the connecting key slides along the axis of the adjusting rod, and a rubber pad for increasing friction is arranged between the connecting key and the contact of the inner wall of the second key groove.

By adopting the technical scheme, the sleeve needs to rotate around the axis of the adjusting rod, when the adjusting rod is fixed, the position of the connecting key positioned in the first key groove is unchanged, the plurality of second key grooves move along with the rotating direction of the sleeve, and when the sleeve moves to a proper position, the fixing key slides into one of the corresponding second adjusting grooves to realize re-fixing; and the fastening is realized through the rubber pad, and the possibility that the connecting key slides out of the second key groove is reduced.

Optionally, a plurality of fixed keys corresponding to the second gear are fixed on the side wall of the secondary rod, and a third key groove for clamping the corresponding fixed key is formed in the second gear; the secondary rod is fixed with a baffle plate which is opposite to the second gear and is positioned at the same side of each fixed key, and one side surface of the baffle plate is provided with a magnet plate for adsorbing the second gear.

Through adopting above-mentioned technical scheme, the fixed of second gear is realized through the fixed key, and the third key slot joint of second gear is in the fixed key time, and magnet on the baffle holds the second gear, realizes further fixing.

Optionally, the plurality of drafting frames are arranged at intervals; the first gears are all positioned between the two drafting frames.

By adopting the technical scheme, the possibility that the roving is rolled by the first gear and the second gear is reduced.

Optionally, a connecting rod is rotatably connected to the rotating shaft of the adjusting pulley, a connecting ring is fixed to one end of the connecting rod, the connecting ring is sleeved on the sleeve and is arranged on the sleeve in a sliding manner, and the sleeve slides along the axis direction of the adjusting rod; the sleeve is provided with a limiting assembly for limiting the connecting ring.

By adopting the technical scheme, when the roving is broken between the feeding roller and the output roller, a worker can slide on the sleeve through the connecting ring to leave a gap; the worker can firstly realize the upward rotation of the adjusting pulley through the secondary rod, then the connecting ring moves along the axial direction of the adjusting rod, and the space is vacated to realize the treatment of the broken end of the roving; when the connecting ring is in a normal working state, the fixing is realized through the limiting component.

Optionally, the limiting assembly comprises a first connecting rod rotatably connected to the sleeve, and a second connecting rod rotatably connected to the first connecting rod; the second connecting rod is rotatably connected to the connecting ring so as to realize that the limiting component drives the connecting ring to move; a limit bolt penetrates through the first connecting rod and is in threaded connection with the second connecting rod.

By adopting the technical scheme, when a worker moves the connecting ring, the first connecting rod and the second connecting rod rotate relatively to drive the connecting ring to move; and the connecting ring is fixed with the first connecting rod and the second connecting rod through the limiting bolt, so that the possibility of slippage of the connecting ring in the working engineering is reduced.

Optionally, the secondary rod is provided with a hand wheel corresponding to the second gear one to one, the hand wheel is located between the adjacent drafting frames, and the hand wheel is located on one side of the baffle plate corresponding to the second gear.

Through adopting above-mentioned technical scheme, every second gear next door all is provided with the hand wheel, makes things convenient for the staff to observe the degree that the roving was stretched when adjusting.

Optionally, a magnet block for adsorbing the second gear is arranged on the hand wheel.

By adopting the technical scheme, when the second gear is separated from the connecting key, the second gear can be adsorbed on the hand wheel to realize fixation; in this way, it is clearly possible to distinguish which are not required for adjusting the adjusting pulley.

Optionally, a plurality of notch openings convenient for rotating the hand wheel are formed in the machine body, the notch openings correspond to the hand wheel one by one, and the notch openings are located under the hand wheel.

Through adopting above-mentioned technical scheme, when the staff rotated the hand wheel, can arrange the hand in the notch opening, the staff of being convenient for rotated the hand wheel.

In summary, the present application includes at least one of the following beneficial technical effects:

the driving motor drives the adjusting rod to rotate, the adjusting rod drives the adjusting pulley to rotate, the whole roving is adjusted by the tensile strength, and when the worker adjusting the roving conveniently is achieved, the roving is adjusted to the appropriate degree of being stretched, and the probability of broken ends is reduced.

Through the secondary rod, the second gear is meshed with the first gear, or the second gear is separated from the first gear, the rotation of a part of adjusting pulleys is realized, and the possibility that a single roving or a part of the roving is easy to break in the adjusting drafting frame is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the sleeve being connected to the adjustment rod.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic view of the structure in which the second gear is connected to the secondary lever.

Fig. 5 is another perspective view of the second gear connected to the secondary lever.

Fig. 6 is a schematic view of the stop assembly attached to the sleeve.

Description of the reference numerals:

1. a body; 2. a drafting frame; 3. a feed roller; 4. an output roller; 5. a mating roller; 6. adjusting a rod; 7. adjusting the pulley; 8. a drive motor; 9. a sleeve; 10. a fixing assembly; 11. a secondary lever; 12. a first gear; 13. a second gear; 14. a first keyway; 15. a second keyway; 16. a connecting key; 17. a rubber pad; 18. a fixed key; 19. a third key groove; 20. a baffle plate; 21. a magnet plate; 22. a connecting rod; 23. a connecting ring; 24. a limiting component; 25. a first link; 26. a second link; 27. a limit bolt; 28. a hand wheel; 29. a magnet block; 30. a notch opening; 31. a drafting plate; 32. rotating the block; 33. rotating the motor; 34. a guide groove; 35. and a guide block.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a spinning frame. Referring to fig. 1, the device comprises a machine body 1 and a plurality of drafting frames 2 arranged on the machine body 1, wherein each drafting frame 2 comprises two drafting plates 31 welded on the machine body 1, the drafting plates 31 are vertically arranged, and the adjacent drafting plates 31 are arranged at intervals; the drafting frames 2 are provided with feeding rollers 3 and output rollers 4 which are connected with the drafting frames 2, the feeding rollers 3 and the output rollers 4 are rotationally connected with the drafting frames 2, and the axes of the feeding rollers 3 and the axes of the output rollers 4 are parallel to each other; the drafting frame 2 is rotatably connected with a rotating block 32, the rotating block 32 is rotatably connected with two matching rollers 5, the matching rollers 5 are respectively abutted against the corresponding feeding roller 3 or the corresponding output roller 4, the rotating axis of the matching roller 5 is parallel to the axis of the feeding roller 3, and the matching rollers 5 can be far away from the feeding roller 3 and the output roller 4 through the rotating block 32; the roving enters from a position between the feeding roller 3 and the matching roller 5 which is contacted with each other and exits from the output roller 4 and the other matching roller 5 which is contacted with each other; two rotating motors 33 are fixed on the drafting plate 31 through bolts, and output shafts of the rotating motors 33 are respectively welded on one end face of the feeding roller 3 or one end face of the output roller 4, so that the driving motor 8 drives the feeding roller 3 or the output roller 4 to rotate, the rotating speed of the output roller 4 is higher than that of the feeding roller 3, and the roving is pulled; the drafting frame 2 is provided with an adjusting rod 6 connected with the drafting frames 2, the adjusting rod 6 is rotationally connected with the drafting frames 2, the adjusting rod 6 is positioned between the feeding roller 3 and the output roller 4, and the axis of the adjusting rod 6 is parallel to the axis of the feeding roller 3; after passing through the feeding roller 3 and the matching roller 5, the roving passes below the adjusting rod 6 and is output from the position between the output roller 4 and the other matching roller 5; the adjusting rod 6 is provided with adjusting pulleys 7 which are in one-to-one correspondence with the drafting frames 2, and the adjusting pulleys 7 are positioned between the two drafting plates 31 forming one drafting frame 2; the rotating shaft of the adjusting pulley 7 is parallel to the axial direction of the adjusting rod 6, the roving penetrates through the lower part of the adjusting pulley 7, and the roving is contacted with the adjusting pulley 7; a driving motor 8 is fixed on one of the drawing plates 31 through a bolt, and an output shaft of the driving motor 8 is welded on one end face of the adjusting rod 6.

The roving continuously enters the feeding roller 3 by rotating the motor 33, and the rotating speed of the output roller 4 is greater than that of the feeding roller 3, so that the roving is stretched; when the driving motor 8 drives the adjusting rod 6 to rotate, the adjusting pulley 7 can rotate along with the adjusting rod 6, the adjusting pulley 7 rotates around the axis of the adjusting rod 6 and presses the roving downwards, the effect that the roving is stretched is enhanced, or the adjusting pulley 7 rotates towards the direction far away from the roving, the effect that the roving is stretched is reduced, and the possibility of reducing broken ends is achieved; when a worker carries out a new batch of rough yarns on the spinning frame, the thickness, the quality and the like of the rough yarns are judged firstly, so that the regulation rod 6 is rotated through the driving motor 8, the adjustment rod 6 is rotated to drive the whole movement of the regulation pulley 7, so that the whole regulation is realized, and the operation of the worker is facilitated.

Referring to the same 1 and 2, the drafting frame 2 is provided with a secondary rod 11 connected with a plurality of drafting frames 2, the secondary rod 11 is rotatably connected with the drafting frames 2, the axis of the secondary rod 11 is parallel to the axis of the adjusting rod 6, and the secondary rod 11 is positioned below the roving; the adjusting rod 6 is rotatably connected with sleeves 9 which correspond to the drafting frames 2 one by one, the sleeves 9 are coaxial with the adjusting rod 6, and a fixing component 10 is arranged between the sleeves 9 and the adjusting rod 6, so that the adjusting rod 6 drives the sleeves 9 to move; the adjusting pulley 7 is connected with the adjusting rod 6 through a sleeve 9; a first gear 12 coaxial with the sleeve 9 is welded on the sleeve 9, second gears 13 corresponding to the first gears 12 one by one are welded on the secondary rod 11, and the first gears 12 are meshed with the corresponding second gears 13; and the second gear 13 can slide on the secondary rod 11 along the length direction of the secondary rod 11, so that the second gear 13 can be separated from the first gear 12, and at the moment, the rotation of the partial adjusting pulley 7 is realized, and the effect that partial rovings are stretched to different degrees is realized.

After the worker adjusts the overall stretching of the roving on the spinning machine, the worker can finely adjust part of the roving, or find that the broken ends frequently appear in the drafting frame 2 during the working period, or adjust the whole stretching by part or a single adjusting pulley 7; the worker firstly needs to disassemble the related fixing component 10 on the adjusting pulley 7 to be adjusted, so that the sleeve 9 of the adjusting pulley 7 to be adjusted is not related to the adjusting rod 6; due to the mutual engagement of the first gear 12 and the second gear 13 at this time, the secondary lever 11 will not rotate, nor will the sleeve 9 rotate; the worker disengages the first gear 12 and the corresponding second gear 13 associated with the regulating pulley 7 that does not require regulation from each other and keeps a group, achieving the effect of temporarily fixing the secondary lever 11; after confirming the adjusting pulleys 7 needing to be adjusted, a worker separates the first gear 12 and the second gear 13 which are associated with the last group of adjusting pulleys 7 needing not to be adjusted, holds the secondary rod 11 with hands, and adjusts the secondary rod; for the convenience of implementation for the staff, the last group of first gear 12 and second gear 13 of the secondary lever 11 can be fixed close to the place where the staff works.

Referring to fig. 2 and 3, a pair of first key slots 14 used with the sleeve 9 are formed in the adjusting rod 6, the fixing assembly 10 comprises a connecting key 16 which is arranged on the adjusting rod 6 and located in the first key slots 14, a plurality of second key slots 15 used for clamping the connecting key 16 are formed in the inner wall of the sleeve 9, and the plurality of second key slots 15 are uniformly distributed at intervals along the circumferential direction of the sleeve 9; the fixed key 18 can slide in the first key groove 14 along the length direction of the adjusting rod 6, and the sliding mode can be realized by a convex and a concave mode; when the adjustment rod 6 and the sleeve 9 are fixed, the connecting key 16 is slid into one of the second key slots 15, and when the adjustment rod 6 and the sleeve 9 are required to be separated, the connecting key 16 is moved out of the second key slot 15; since the sleeve 9 is rotatable relative to the adjustment rod 6, the connecting key 16 will be located in a different second key slot 15 upon rotation.

Referring to fig. 3, a rubber pad 17 is adhered to a side wall of the fixing key 18 facing away from the adjusting rod 6, so as to fasten the connecting key 16 and the second key groove 15.

Referring to fig. 2 and 4, the secondary lever 11 is welded with fixing keys 18 corresponding to the second gear 13 one to one, the second gear 13 is provided with a third key slot 19 for clamping the fixing keys 18, and when the fixing keys 18 are located in the third key slot 19, the second gear 13 is meshed with the corresponding first gear 12; baffles 20 which are in one-to-one correspondence with the second gears 13 are welded on the secondary rods 11, the baffles 20 are positioned on the same side corresponding to the second gears 13, magnet plates 21 are bonded on the side walls, contacting the gears, of the baffles 20, and the magnet plates 21 are used for adsorbing the second gears 13 to fix the second gears 13; hand wheels 28 which correspond to the second gears 13 one to one are welded on the secondary rods 11, the hand wheels 28 are positioned on one side, away from the baffle plate 20, of the second gears 13, and the effect that workers can rotate the secondary rods 11 conveniently is achieved through the hand wheels 28; and the machine body 1 is provided with a notch 30 convenient for a worker to operate, the notch 30 is positioned under the hand wheel 28, and the worker can stretch the hand into the notch 30 to realize the rotation of the hand wheel 28.

Referring to fig. 2 and 5, a magnet block 29 is adhered to a side wall of the hand wheel 28 facing the second gear 13, and the magnet block 29 is used for adsorbing the second gear 13 to fix the second gear 13 when the second gear 13 is separated from the first gear 12.

Referring to fig. 2, after the spinning frame breaks in the draft frame 2, the roving may be entangled in the first gear 12 or the second gear 13, and the sleeve 9 is extended along the side of the axis of the adjusting rod 6, so that the sleeve 9 passes through one of the draft plates 31 of the draft frame 2; the first gear 12 and the second gear 13 are located between adjacent draft frames 2.

Referring to fig. 2 and 6, a connecting ring 23 is further sleeved on the sleeve 9, and the connecting ring 23 can slide along the axial direction of the adjusting rod 6; the outer side wall of the connecting ring 23 is welded with a connecting rod 22, and one end of the connecting rod 22, which is far away from the sleeve 9, is rotatably connected with a rotating shaft of the adjusting pulley 7; the sleeve 9 is provided with a limiting assembly 24 for limiting the movement of the connecting ring 23.

Referring to fig. 2, 3 and 6, the limiting assembly 24 includes a first link 25 rotatably connected to the sleeve 9, and a second link 26 rotatably connected to the first link 25, the second link 26 being rotatably connected to the connecting ring 23, the two ends of the second link 26 being parallel to each other in rotation and perpendicular to the axis of the adjusting lever 6, the rotation axis of the first link 25 connected to the sleeve 9 being parallel to the rotation axis of the second link 26; the connecting ring 23 is pulled to move through the limiting assembly 24; the outer side wall of the sleeve 9 is provided with a plurality of guide grooves 34 for realizing the movement of the connecting ring 23 along the axis of the adjusting rod 6, and the guide grooves 34 extend along the axis direction of the adjusting rod 6; the inner wall of the connecting ring 23 is welded with a guide block 35 positioned in the guide groove 34, and the side wall of the guide block 35 abuts against the inner wall of the guide groove 34 to realize the guide of the connecting ring 23; the first link 25 is provided with a limit bolt 27, and the limit bolt 27 is screwed to the second link 26, so as to fix the second link 26 of the first link 25, and when the first link 25 is fixed to the second link 26, the connection ring 23 is in a normal working state.

When the staff takes place the broken end in discovering draft frame 2, can keep away from feeding roller 3 and output roller 4 with turning block 32, then realize the rotation to adjusting pulley 7 through secondary pole 11 for adjusting pulley 7 is located the outside of draft frame 2, and the spacing bolt 27 of pine is fast, makes go-between 23 slide on sleeve 9, leaves the space, the staff's of being convenient for restoration.

The implementation principle of the spinning frame in the embodiment of the application is as follows: rotate the rotation of motor 33 drive feeding roller 3 and output roller 4, realize the preliminary drawing of roving, then the accessible starts driving motor 8 and realizes adjusting the rotation of pole 6, realize adjusting pulley 7's rotation, intensity that the roving was dragged is adjusted and control to this, can also pass through hand wheel 28, drive the rotation of secondary pole 11, realize the motion of part or single adjusting pulley 7, intensity that the roving was stretched is realized to this, when finished spun yarn was handed over thick, can rotate adjusting pulley 7 downwards, when easily taking place the broken end in draft frame 2 inside, upwards rotate adjusting pulley 7.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a spun yarn, includes organism (1), sets up a plurality of draft frames (2) on organism (1), has on draft frame (2) to rotate to connect in feeding roller (3) and output roller (4) of a plurality of draft frames (2), and the axis of feeding roller (3) and output roller (4) is parallel to each other, still is equipped with on draft frame (2) to be used for butt feeding roller (3) or two cooperation rollers (5) on output roller (4), its characterized in that: the drafting frames (2) are rotatably connected with adjusting rods (6) of the drafting frames (2), the adjusting rods (6) are positioned between the output roller (4) and the feeding roller (3), and the axes of the adjusting rods (6) are parallel to the axis of the output roller (4); the side wall of the adjusting rod (6) is rotatably connected with adjusting pulleys (7) which are in one-to-one correspondence with the drafting frame (2), and the axis of each adjusting pulley (7) is parallel to the output roller (4); the adjusting pulley (7) is abutted against the rough yarn; the machine body (1) is provided with a driving motor (8) for driving the adjusting rod (6) to rotate to realize the effect that the roving is stretched.

2. The spun yarn of claim 1, wherein: the adjusting rod (6) is rotatably connected with sleeves (9) which correspond to the drafting frames (2) one by one, and the sleeves (9) and the adjusting rod (6) are coaxial; the adjusting pulley (7) is connected with the sleeve (9), and a fixing component (10) for fixing the sleeve (9) and the adjusting rod (6) is arranged between the sleeve (9) and the adjusting rod; a secondary rod (11) is rotatably connected to the machine body (1), and the axis of the secondary rod (11) is parallel to the axis of the adjusting rod (6); a first gear (12) is fixed on the sleeve (9), a plurality of second gears (13) are fixed on the secondary rod (11), and the first gears (12) and the second gears (13) are in one-to-one correspondence and are mutually meshed; the second gear (13) can slide along the length direction of the secondary rod (11) to realize the separation of the first gear (12).

3. The spun yarn of claim 2, wherein: the adjusting rod (6) is provided with a plurality of first key grooves (14) corresponding to the sleeve (9), the inner wall of the sleeve (9) is provided with a plurality of second key grooves (15), and the second key grooves (15) are uniformly distributed along the circumferential direction of the sleeve (9); the fixing assembly (10) comprises a connecting key (16) which is arranged on the adjusting rod (6) in a sliding mode and is positioned in the first key groove (14), and the connecting key (16) is positioned in one of the second key grooves (15); the connecting key (16) slides along the axis of the adjusting rod (6), and a rubber pad (17) for increasing friction is arranged between the connecting key (16) and the inner wall of the second key groove (15) in contact.

4. The spun yarn of claim 3, wherein: fixed keys (18) which correspond to the second gears (13) one to one are fixed on the side walls of the secondary rods (11), and third key grooves (19) used for clamping and connecting the corresponding fixed keys (18) are formed in the second gears (13); a baffle plate (20) positioned at the same side of each fixed key (18) is fixed on the secondary rod (11), and a magnet plate (21) for adsorbing the second gear (13) and realizing the meshing of the first gear (12) and the second gear (13) is fixed on one side surface of the baffle plate (20).

5. The spun yarn of claim 2, wherein: the plurality of drafting frames (2) are arranged at intervals; the first gears (12) are positioned between the two drafting frames (2).

6. The spun yarn of claim 2, wherein: a connecting rod (22) is rotatably connected to the rotating shaft of the adjusting pulley (7), a connecting ring (23) is fixed to one end of the connecting rod (22), the connecting ring (23) is sleeved on the sleeve (9) and is arranged on the sleeve (9) in a sliding mode, and the sleeve (9) slides along the axis direction of the adjusting rod (6); the sleeve (9) is provided with a limiting assembly (24) for limiting the movement of the connecting ring (23).

7. The spun yarn of claim 6, wherein: the limiting assembly (24) comprises a first connecting rod (25) rotatably connected to the sleeve (9), and a second connecting rod (26) rotatably connected to the first connecting rod (25); the second connecting rod (26) is rotatably connected to the connecting ring (23) so as to realize that the limiting component (24) drives the connecting ring (23) to move; the first connecting rod (25) is provided with a limiting bolt (27) in a penetrating way, and the limiting bolt (27) is connected to the second connecting rod (26) in a threaded way.

8. The spun yarn of claim 2, wherein: be provided with on secondary pole (11) hand wheel (28) with second gear (13) one-to-one, hand wheel (28) are located between adjacent draft frame (2), and hand wheel (28) are located and deviate from baffle (20) one side corresponding second gear (13).

9. The spun yarn of claim 8, wherein: and a magnet block (29) for adsorbing the second gear (13) is arranged on the hand wheel (28).

10. The spun yarn of claim 9 wherein: a plurality of notch openings (30) convenient for rotating the hand wheel (28) are formed in the machine body (1), the notch openings (30) correspond to the hand wheel (28) one by one, and the notch openings (30) are located under the hand wheel (28).