One-way conveying type yarn conveyor

Abstract

The utility model relates to the field of yarn conveying devices of knitting machines, in particular to a one-way conveying type yarn conveyor. Comprising a shell, a first conveying roller and a second conveying roller which are arranged in parallel are rotationally arranged on the shell, and the first conveying roller and the second conveying roller extend out of the shell in the same direction; the first conveying roller is rotatably sleeved with the pair of transmission discs, the input shaft is used for inputting driving rotation torque, a transmission assembly is connected between the input shaft and the pair of transmission discs, and the transmission assembly is used for transmitting the rotation torque of the input shaft to the pair of transmission discs to rotate reversely. The first transmission wheel is slidably mounted on the first conveying roller, the second transmission wheel is mounted on the second conveying roller, the first transmission wheel and the second transmission wheel are in transmission connection to drive the first conveying roller and the second conveying roller to rotate in the same direction, and the first transmission wheel is arranged between a pair of transmission discs; transmission teeth are oppositely arranged at the close ends between the first transmission wheel and the transmission disc respectively. And the knitting machine can automatically adapt to different steering directions.

Description

Technical Field

[0001] The utility model relates to the field of yarn feeding devices of knitting machines, in particular to a unidirectional conveying type yarn feeding device. Background Art

[0002] The spandex yarn feeder is mainly used to transport spandex yarn. Its working principle is as shown in the Chinese utility model patent publication number CN206188994U, in which a yarn tube is set on a yarn feed roller, and a pair of yarn feed rollers are driven to rotate through a transmission wheel and a transmission device to drive the yarn tube to rotate, thereby realizing yarn transportation.

[0003] In actual applications, different textile manufacturers will adjust the circular knitting machines to different rotation directions according to process requirements. Before the existing spandex yarn feeders leave the factory, the direction of the input shaft needs to be confirmed and the steering direction needs to be adjusted in advance to ensure that the rotation direction of the yarn feed roller remains unchanged. Therefore, the existing yarn feeders will be provided with a steering adjustment component. Specifically, a pair of adjustable reversing gears are provided on the transmission shaft that is transmission-connected to the input shaft in the yarn feeder. The driving gear on the input shaft meshes with different reversing gears to achieve the switching of the transmission shaft's steering direction. When adjusting the steering direction, it is necessary to insert a wrench into the interior of the yarn feeder to achieve the switching of the meshing of a pair of reversing gears with the driving gear. Therefore, the existing spandex yarn feeders need to adjust the steering direction before use to adapt to knitting machines with different steering directions, which makes the operation complicated and affects the installation efficiency of the yarn feeder. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a one-way conveying type yarn feeder which can automatically adapt to knitting machines with different steering directions.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A unidirectional conveying type yarn feeder, comprising:

[0007] A housing, on which a first conveying roller and a second conveying roller arranged in parallel are rotatably disposed, the first conveying roller and the second conveying roller extend out of the housing in the same direction and are used to support the yarn bobbin;

[0008] A pair of transmission discs are rotatably sleeved on the first conveying roller.

[0009] An input shaft is used to input a driving torque. A transmission assembly is connected between the input shaft and a pair of transmission discs. The transmission assembly is used to transmit the torque of the input shaft to the pair of transmission discs for counter-rotation.

[0010] A first drive wheel slidably mounted on the first conveying roller and a second drive wheel mounted on the second conveying roller, the first drive wheel and the second drive wheel being drivingly connected to drive the first conveying roller and the second conveying roller to rotate in the same direction. The first drive wheel is disposed between a pair of drive discs, and drive teeth are respectively provided opposite to each other on the adjacent ends between the first drive wheel and the drive discs.

[0011] When the drive disc rotates in the rotational direction A, the drive teeth opposite to each other between the drive disc and the first drive wheel are circumferentially engaged to transmit the rotational torque.

[0012] When the drive disc rotates in the reverse direction of the rotational direction A, the drive teeth opposite to each other between the drive disc and the first drive wheel transmit an axial thrust to the first drive wheel, so that the first drive wheel moves to be circumferentially engaged with the drive disc on the opposite side through the drive teeth.

[0013] When the drive teeth between one side's drive disc and the first drive wheel are circumferentially engaged, the drive teeth between the drive disc on the other side and the first drive wheel are axially separated.

[0014] Further, in a one-way conveying type yarn feeder of the present application, the drive teeth include first drive teeth provided on the end faces between a pair of drive discs.

[0015] On one side of the first drive teeth facing the rotational direction A, there is a first drive tooth surface for transmitting the rotational torque.

[0016] On the side of the first drive teeth facing the reverse direction of the rotational direction A, there is a first helical tooth surface for converting the circumferential rotational thrust into an axial thrust.

[0017] Further, in a one-way conveying type yarn feeder of the present application, the drive teeth include second drive teeth provided on the end faces on both sides of the first drive wheel.

[0018] On the side of the second drive teeth facing the reverse direction of the rotational direction A, there is a second drive tooth surface for transmitting the rotational torque.

[0019] On the side of the first drive teeth facing the rotational direction A, there is a second helical tooth surface for converting the circumferential rotational thrust into an axial thrust.

[0020] Further, in a one-way conveying type yarn feeder of the present application, the drive assembly includes a third drive wheel rotatably mounted on the housing. The rotation axis core of the third drive wheel is perpendicular to the first conveying roller. A pair of drive discs are symmetrically disposed on both sides of the third drive wheel. The third drive wheel is respectively drivingly connected to the pair of drive discs through bevel gears. The third drive wheel is drivingly connected to the input shaft. As a preferred solution of the present application, in the present application, the third drive wheel is drivingly engaged with the drive discs on both sides through bevel gears, so that the pair of drive discs rotate in opposite directions.

[0021] Further, in a one-way conveying type yarn feeder of the present application, the input shaft is vertically rotatably installed on the housing, the first conveying roller and the second conveying roller are horizontally arranged, and the input shaft is arranged on the side of the first conveying roller away from the second conveying roller.

[0022] Further, in a one-way conveying type yarn feeder of the present application, a one-way locking device is provided on the first conveying roller and / or the second conveying roller to prevent the first conveying roller and the second conveying roller from rotating in the reverse direction of the working rotation direction. As a preferred solution of the present application, the function of the one-way locking device is also to provide a reaction force when the transmission teeth between the transmission disk and the first transmission wheel transmit an axial thrust to the first transmission wheel, preventing the first conveying roller and the second conveying roller from reversing during this process.

[0023] Further, in a one-way conveying type yarn feeder of the present application, a sliding sleeve is sleeved and installed on the first conveying roller. The sliding sleeve is arranged between a pair of transmission disks. The first transmission wheel is slidably sleeved on the sliding sleeve. The sliding sleeve is connected to the first conveying roller through a locking member, and a circumferential locking structure is provided between the sliding sleeve and the first transmission wheel. As a preferred solution of the present application, the sliding sleeve is used to axially isolate and limit a pair of [3=]. The sliding sleeve and the first conveying roller are connected through a locking member, which can reduce the structural complexity of the first conveying roller. A circumferential locking structure is provided between the sliding sleeve and the first transmission wheel for transmitting the rotational torque.

[0024] Further, in a one-way conveying type yarn feeder of the present application, the locking member is a bead screw. The front end of the bead screw is provided with a top bead that axially elastically moves. The bead screw radially penetrates through the first conveying roller and the sliding sleeve, and the top bead extends out of the side surface of the sliding sleeve;

[0025] A pair of locking grooves adapted to the shape of the top bead are provided on the side wall of the sleeve hole of the first transmission wheel. The pair of locking grooves are arranged at intervals along the moving direction of the first transmission wheel;

[0026] When the first transmission wheel moves to the position where the top bead enters one side of the locking groove, the first transmission wheel is circumferentially engaged with the transmission disk on the same side through the transmission teeth. As a preferred solution of the present application, the cooperation between the top bead and the locking groove can axially limit the first transmission wheel and the transmission disk during circumferential engagement. When the transmission disk transmits an axial thrust to the first transmission wheel, the top bead is pressed out of the locking groove, and the first transmission wheel can axially move.

[0027] Further, in a one-way conveying type yarn feeder of the present application, the second transmission teeth are arranged evenly in the circumferential direction, and a tooth groove is provided between a pair of adjacent second transmission teeth. The tooth groove is used to accommodate the transmission teeth on the transmission disk. As a preferred solution of the present application, to ensure that after the first transmission wheel is axially pushed in place, the transmission teeth on the transmission disk can directly enter the tooth groove and engage with the second transmission teeth.

[0028] Further, in a unidirectional conveying type yarn feeder of the present application, an input pulley is provided on the input shaft. As a preferred solution of the present application, the input shaft inputs a rotational torque through the input pulley.

[0029] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects:

[0030] The present utility model provides a unidirectional conveying type yarn feeder, and its principle is: the input shaft inputs a rotational torque, which drives a pair of transmission disks to rotate on the first conveying roller through a transmission component, and the pair of transmission disks rotate in opposite directions. Therefore, regardless of the rotation direction input by the input shaft, there is always one transmission disk rotating in the rotation direction A, and the other transmission disk rotates in the reverse direction of the rotation direction A. Therefore, the transmission disk rotating in the rotation direction A is circumferentially engaged with the first transmission wheel through transmission teeth to transmit the rotational torque to the first transmission wheel and the first conveying roller, while the transmission disk on the other side is disengaged from the first transmission wheel and cannot input the rotational torque. At this time, the first conveying roller only receives the rotational torque corresponding to the rotation direction A. When the rotational torque input by the input shaft changes, the transmission disk that originally rotated in the rotation direction A rotates in the reverse direction, and the transmission teeth between the transmission disk and the first transmission wheel transmit an axial thrust to the first transmission wheel, so that the first transmission wheel moves to be circumferentially engaged with the transmission disk on the opposite side through the transmission teeth, and the transmission disk on the opposite side is rotating in the rotation direction A at this time. Therefore, by arbitrarily switching the rotation direction of the input shaft, the first transmission wheel always receives the rotational torque corresponding to the rotation direction A. During this process, no manual adjustment is required, and the function of the first conveying roller and the second conveying roller always rotating unidirectionally is realized to automatically adapt to knitting machines with different rotation directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of a unidirectional conveying type yarn feeder in an embodiment of the present application;

[0032] Figure 2 Internal structure schematic diagram of a unidirectional conveying type yarn feeder in an embodiment of the present application;

[0033] Figure 3 For Figure 2 Partial enlarged view of area A in the circle;

[0034] Figure 4 Cross-sectional view of the corresponding component of the first conveying roller in an embodiment of the present application;

[0035] Figure 5 Exploded schematic diagram of the corresponding component of the first conveying roller in an embodiment of the present application;

[0036] Figure 6 For Figure 5 Schematic diagram of the first transmission wheel and the transmission disk in.

[0037] In the figure: 1 - housing;

[0038] 21 - First conveying roller; 211 - Sliding sleeve; 212 - Glass bead screw; 2121 - Top bead; 22 - Second conveying roller; 221 - One - way bearing;

[0039] 3 - Driving disc; 31 - First driving tooth; 311 - First driving tooth surface; 312 - First helical tooth surface;

[0040] 40 - Second driving tooth; 400 - Tooth groove; 401 - Second driving tooth surface; 402 - Second helical tooth surface; 41 - First driving wheel; 411 - Lock groove; 42 - Second driving wheel;

[0041] 5 - Input shaft; 51 - Synchronous belt pulley; 52 - Input belt pulley;

[0042] 6 - Third driving wheel. Detailed implementation mode

[0043] Combined with Figures 1 to 6 A one - way conveying type yarn feeder shown as follows, including:

[0044] A housing 1, on which a first conveying roller 21 and a second conveying roller 22 which are arranged in parallel are rotatably provided. The first conveying roller 21 and the second conveying roller 22 extend out of the housing 1 in the same direction and are used for supporting the yarn bobbin. In this embodiment, both ends of the first conveying roller 21 and the second conveying roller 22 extend out of both sides of the housing 1.

[0045] A pair of driving discs 3, which are rotatably sleeved on the first conveying roller 21;

[0046] An input shaft 5, which is used for inputting a driving torque. A transmission component is connected between the input shaft 5 and the pair of driving discs 3, and the transmission component is used for transmitting the torque of the input shaft 5 to the pair of driving discs 3 for reverse rotation;

[0047] A first driving wheel 41 slidably mounted on the first conveying roller 21 and a second driving wheel 42 mounted on the second conveying roller 22. The first driving wheel 41 and the second driving wheel 42 are in transmission connection to drive the first conveying roller 21 and the second conveying roller 22 to rotate in the same direction. The first driving wheel 41 is arranged between the pair of driving discs 3, and driving teeth are respectively provided oppositely on the adjacent ends between the first driving wheel 41 and the driving discs 3.

[0048] When the driving disc 3 rotates in the rotation direction A, the driving teeth opposite between the driving disc 3 and the first driving wheel 41 are circumferentially engaged to transmit the torque;

[0049] When the driving disc 3 rotates in the reverse direction of the rotation direction A, the driving teeth opposite between the driving disc 3 and the first driving wheel 41 transmit an axial thrust to the first driving wheel 41, so that the first driving wheel 41 moves to be circumferentially engaged with the driving disc 3 on the opposite side through the driving teeth;

[0050] When the transmission teeth between the transmission disc 3 on one side and the first transmission wheel 41 are circumferentially engaged, the transmission teeth between the transmission disc 3 on the other side and the first transmission wheel 41 are axially separated.

[0051] Based on the above structure, the principle of a unidirectional conveying type yarn feeder is as follows: The input shaft 5 inputs a rotational torque, which drives a pair of transmission discs 3 to rotate on the first conveying roller 21 through a transmission component, and the pair of transmission discs 3 rotate in opposite directions. Therefore, regardless of the rotation direction input by the input shaft 5, there is always one transmission disc 3 rotating in the rotational direction A, and the other transmission disc 3 rotating in the opposite direction of the rotational direction A. Therefore, the transmission disc 3 rotating in the rotational direction A is circumferentially engaged with the first transmission wheel 41 through transmission teeth to transmit the rotational torque to the first transmission wheel 41 and the first conveying roller 21, while the transmission disc 3 on the other side is disengaged from the first transmission wheel 41 and cannot input the rotational torque. At this time, the first conveying roller 21 only receives the rotational torque corresponding to the rotational direction A. When the rotational torque input by the input shaft 5 changes, the original transmission disc 3 rotating in the rotational direction A rotates in the reverse direction, and the relative transmission teeth between the transmission disc 3 and the first transmission wheel 41 transmit an axial thrust to the first transmission wheel 41, so that the first transmission wheel 41 moves to be circumferentially engaged with the transmission disc 3 on the opposite side through transmission teeth, and the transmission disc 3 on the opposite side is rotating in the rotational direction A at this time. Therefore, by arbitrarily switching the rotation direction of the input shaft 5, the first transmission wheel 41 always receives the rotational torque corresponding to the rotational direction A, and manual adjustment is not required during this process, realizing the function that the first conveying roller 21 and the second conveying roller 22 always rotate unidirectionally. In this embodiment, a bearing is provided between the transmission disc 3 and the first conveying roller 21 to prevent direct transmission of the rotational torque between the transmission disc 3 and the first conveying roller 21. The first transmission wheel 41 and the second transmission wheel 42 are connected by a synchronous belt transmission, and the first transmission wheel 41 is provided with a belt groove on the side surface.

[0052] In this embodiment, in combination Figures 2 to 6 As shown, the transmission teeth include first transmission teeth 31 provided on the end faces between a pair of transmission discs 3; on one side of the first transmission teeth 31 facing the rotational direction A, there is a first transmission tooth surface 311 for transmitting the rotational torque; on the side of the first transmission teeth 31 facing the opposite direction of the rotational direction A, there is a first inclined tooth surface 312 for converting the circumferential rotational thrust into an axial thrust. In this embodiment, a plurality of first transmission teeth 31 are provided on the transmission disc 3, which are circumferentially spaced apart. Specifically, the number of first transmission teeth 31 on each transmission disc 3 is 3.

[0053] In this embodiment, the transmission teeth include second transmission teeth 40 provided on the end faces on both sides of the first transmission wheel 41;

[0054] On the side of the second transmission gear 40 opposite to the reverse side of the rotation direction A, there is a second transmission tooth surface 401 for transmitting the rotational torque; on the side of the first transmission gear 31 towards the rotation direction A, there is a second helical tooth surface 402 for converting the circumferential rotational thrust into an axial thrust. In this embodiment, the second transmission gears 40 are arranged uniformly in the circumferential direction, and a tooth groove 400 is provided between adjacent pairs of the second transmission gears 40 for accommodating the transmission teeth on the transmission disc 3, so as to ensure that after the first transmission wheel 41 is axially pushed in place, the transmission teeth on the transmission disc 3 can directly enter the tooth groove 400 and mesh with the second transmission gears 40. In this embodiment, the first transmission gear 31 and the second transmission gear 40 are axially opposite to each other, and the first transmission tooth surface 311 and the first helical tooth surface 312 are respectively circumferentially opposite to the second transmission tooth surface 401 and the second helical tooth surface 402.

[0055] In other embodiments, only the second transmission gear 40 is provided on the first transmission wheel 41 or only the first transmission gear 31 is provided on the transmission disc 3. The shape of the transmission teeth on the opposite side of the second transmission gear 40 or the first transmission gear 31 can be ordinary square teeth or cylindrical teeth. When the transmission teeth on the opposite side abut against the first helical tooth surface 312 or the second helical tooth surface 402, the transmission disc 3 can transmit the axial thrust to the first transmission wheel 41 when it rotates.

[0056] Combined Figures 1 to 2 As shown, in this embodiment, the transmission assembly includes a third transmission wheel 6 rotatably mounted on the housing 1. The rotation axis of the third transmission wheel 6 is perpendicular to the first conveying roller 21. A pair of transmission discs 3 are symmetrically arranged on both sides of the third transmission wheel 6. The third transmission wheel 6 is respectively in meshing transmission connection with the pair of transmission discs 3 through bevel gears, and the third transmission wheel 6 is in transmission connection with the input shaft 5. The third transmission wheel 6 drives the pair of transmission discs 3 to rotate in opposite directions through meshing transmission with the bevel gears on both sides. In this embodiment, the input shaft 5 is in transmission connection with the third transmission wheel 6 through a synchronous belt. A synchronous belt groove is provided on the side surface of the corresponding third transmission wheel 6, and a synchronous belt pulley 51 is mounted on the input shaft 5. In other embodiments, the input shaft 5 and the third transmission wheel 6 can be in transmission connection through at least one of the forms of gears, belt-pulleys, and chain-sprockets.

[0057] In this embodiment, the input shaft 5 is vertically rotatably mounted on the housing 1. The first conveying roller 21 and the second conveying roller 22 are horizontally arranged, and the input shaft 5 is arranged on the side of the first conveying roller 21 away from the second conveying roller 22. In this embodiment, the input shaft 5 is arranged at the central position in the extending direction of the first conveying roller 21 and the second conveying roller 22, that is, the first conveying roller 21 and the second conveying roller 22 symmetrically extend in the horizontal direction on both sides of the input shaft 5.

[0058] In this embodiment, a one-way locking device is provided on the first conveying roller 21 and / or the second conveying roller 22 to prevent the first conveying roller 21 and the second conveying roller 22 from rotating in the reverse direction of the working rotation direction. The function of the one-way locking device is also to provide a reaction force when the transmission teeth between the transmission disk 3 and the first transmission wheel 41 transmit an axial thrust to the first transmission wheel 41, preventing the first conveying roller 21 and the second conveying roller 22 from reversing during this process. In this embodiment, the one-way locking device is a one-way bearing 221 installed on the second conveying roller 22, and the outer ring of the one-way bearing 221 is circumferentially locked on the housing 1.

[0059] Combined Figures 4 to 6 As shown, in this embodiment, a sliding sleeve 211 is sleeved on the first conveying roller 21. The sliding sleeve 211 is arranged between a pair of transmission disks 3. The first transmission wheel 41 is slidably sleeved on the sliding sleeve 211. The sliding sleeve 211 is connected to the first conveying roller 21 through a locking member. A circumferential locking structure is provided between the sliding sleeve 211 and the first transmission wheel 41. Among them, the function of the sliding sleeve 211 is to axially isolate and limit a pair of 3. The sliding sleeve 211 and the first conveying roller 21 are connected through a locking member, which can reduce the structural complexity of the first conveying roller 21. Therefore, in this embodiment, the first conveying roller 21 is a smooth shaft. A circumferential locking structure is provided between the sliding sleeve 211 and the first transmission wheel 41 for transmitting the rotational torque. In this embodiment, the sliding sleeve 211 is in the shape of a prism, and the first transmission wheel 41 is provided with a corresponding sleeve hole to correspond to the circumferential locking structure.

[0060] In this embodiment, the locking member is a bead screw 212. The front end of the bead screw 212 is provided with a top bead 2121 that is axially elastic and movable. The bead screw 212 is radially inserted into the first conveying roller 21 and the sliding sleeve 211, and the top bead 2121 extends out of the side surface of the sliding sleeve 211;

[0061] A pair of locking grooves 411 adapted to the shape of the top bead 2121 are provided on the side wall of the sleeve hole of the first transmission wheel 41; the pair of locking grooves 411 are arranged at intervals along the moving direction of the first transmission wheel 41;

[0062] When the first transmission wheel 41 moves to the position where the top bead 2121 enters one of the locking grooves 411, the first transmission wheel 41 is circumferentially engaged with the transmission disk 3 on the same side through the transmission teeth. The cooperation between the top bead 2121 and the locking groove 411 can axially limit the first transmission wheel 41 and the transmission disk 3 when they are circumferentially engaged. When the transmission disk 3 transmits an axial thrust to the first transmission wheel 41, the top bead 2121 is pressed out of the locking groove 411, and the first transmission wheel 41 can move axially.

[0063] In this embodiment, an input pulley 52 is provided on the input shaft 5. The input shaft 5 inputs the rotational torque through the input pulley 52.

[0064] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanation here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A unidirectional conveying type yarn feeder, characterized in that, Comprising: A housing (1), on which a first conveying roller (21) and a second conveying roller (22) that are arranged in parallel and rotate are provided, and the first conveying roller (21) and the second conveying roller (22) extend out of the housing (1) in the same direction; A pair of transmission discs (3), and the pair of transmission discs (3) are rotatably sleeved on the first conveying roller (21); An input shaft (5), and a transmission assembly is connected between the input shaft (5) and the pair of transmission discs (3), and the transmission assembly is used for transmitting the rotational torque of the input shaft (5) to the pair of transmission discs (3) to rotate in opposite directions; A first transmission wheel (41) slidably mounted on the first conveying roller (21) and a second transmission wheel (42) mounted on the second conveying roller (22), and the first transmission wheel (41) and the second transmission wheel (42) are in transmission connection to drive the first conveying roller (21) and the second conveying roller (22) to rotate in the same direction. The first transmission wheel (41) is arranged between the pair of transmission discs (3), and transmission teeth are respectively oppositely provided on the adjacent ends between the first transmission wheel (41) and the transmission discs (3); When the transmission disc (3) rotates in the rotation direction A, the transmission teeth opposite between the transmission disc (3) and the first transmission wheel (41) are circumferentially engaged to transmit the rotational torque; When the transmission disc (3) rotates in the reverse direction of the rotation direction A, the transmission teeth opposite between the transmission disc (3) and the first transmission wheel (41) transmit an axial thrust to the first transmission wheel (41), so that the first transmission wheel (41) moves to be circumferentially engaged with the transmission disc (3) on the opposite side through the transmission teeth; When the transmission teeth between one side of the transmission disc (3) and the first transmission wheel (41) are circumferentially engaged, the transmission teeth between the transmission disc (3) on the other side and the first transmission wheel (41) are axially separated.

2. The one-way conveying type yarn feeder according to claim 1, characterized in that: The transmission teeth include first transmission teeth (31) provided on the end faces between the pair of transmission discs (3); On one side of the first transmission tooth (31) facing the rotation direction A, there is a first transmission tooth surface (311), and the first transmission tooth surface (311) is used for transmitting the rotational torque; On the side of the first transmission tooth (31) facing the reverse direction of the rotation direction A, there is a first inclined tooth surface (312), and the first inclined tooth surface (312) is used for converting the circumferential rotational thrust into an axial thrust.

3. The one-way conveying type yarn feeder according to claim 2, characterized in that: The transmission teeth include second transmission teeth (40) provided on the end faces on both sides of the first transmission wheel (41); On the side of the second transmission tooth (40) facing the reverse direction of the rotation direction A, there is a second transmission tooth surface (401), and the second transmission tooth surface (401) is used for transmitting the rotational torque; On the side of the first transmission tooth (31) facing the rotation direction A, there is a second inclined tooth surface (402), and the second inclined tooth surface (402) is used for converting the circumferential rotational thrust into an axial thrust.

4. The one-way conveying type yarn feeder according to claim 1, wherein: The transmission assembly includes a third transmission wheel (6) rotatably mounted on the housing (1). The rotation axis core of the third transmission wheel (6) is perpendicular to the first conveying roller (21). A pair of transmission discs (3) are symmetrically arranged on both sides of the third transmission wheel (6). The third transmission wheel (6) is respectively connected to the pair of transmission discs (3) through bevel gear meshing transmission, and the third transmission wheel (6) is connected to the input shaft (5) through transmission.

5. The one-way conveying type yarn feeder according to claim 1, wherein: The input shaft (5) is vertically and rotatably mounted on the housing (1). The first conveying roller (21) and the second conveying roller (22) are horizontally arranged. The input shaft (5) is arranged on the side of the first conveying roller (21) away from the second conveying roller (22).

6. The one-way conveying type yarn feeder according to claim 1, wherein: A one-way locking device is provided on the first conveying roller (21) and / or the second conveying roller (22) to prevent the first conveying roller (21) and the second conveying roller (22) from rotating in the reverse direction of the working rotation direction.

7. A one-way conveying type yarn feeder according to claim 1, characterized in that: A sliding sleeve (211) is sleeved on the first conveying roller (21). The sliding sleeve (211) is arranged between the pair of transmission discs (3). The first transmission wheel (41) is slidably sleeved on the sliding sleeve (211). The sliding sleeve (211) is connected to the first conveying roller (21) through a locking member, and a circumferential locking structure is provided between the sliding sleeve (211) and the first transmission wheel (41).

8. The one-way conveying type yarn feeder according to claim 7, characterized in that: The locking member is a bead screw (212). The front end of the bead screw (212) is provided with a top bead (2121) that elastically moves axially. The bead screw (212) radially penetrates through the first conveying roller (21) and the sliding sleeve (211), and the top bead (2121) extends out of the side surface of the sliding sleeve (211). A pair of locking grooves (411) adapted to the shape of the top bead (2121) are provided on the side wall of the sleeve hole of the first transmission wheel (41). The pair of locking grooves (411) are arranged at intervals along the moving direction of the first transmission wheel (41). When the first transmission wheel (41) moves to the position where the top bead (2121) enters the locking groove (411) on one side, the first transmission wheel (41) is circumferentially meshed with the transmission disc (3) on the same side through transmission teeth.

9. The one-way conveying type yarn feeder according to claim 3, wherein: The second transmission teeth (40) are arranged evenly in the circumferential direction. A tooth groove (400) is provided between adjacent pairs of second transmission teeth (40). The tooth groove (400) is used to accommodate the transmission teeth on the transmission disc (3).

10. The one-way conveying type yarn feeder according to claim 1, characterized in that: An input pulley (52) is provided on the input shaft (5).

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