CN111441112A

CN111441112A - Spinning device and automatic doffing and feeding method thereof

Info

Publication number: CN111441112A
Application number: CN202010384231.2A
Authority: CN
Inventors: 陈国樑; 张斌
Original assignee: Anhui Rifa Textile Machinery Co Ltd
Current assignee: Anhui Rifa Textile Machinery Co Ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-07-24

Abstract

The invention discloses a spinning device and an automatic doffing and feeding method thereof, and belongs to the technical field of textile machinery. The spinning device comprises a plurality of spinning units, each spinning unit comprises a cotton guide pipe, a drafting mechanism, a spinning device, a yarn storage mechanism and a winding mechanism which are sequentially arranged, and the winding mechanism is electrically connected with a control mechanism of the spinning unit; the winding mechanism comprises a rocker arm and a roller; one end of the rocker arm is rotatably connected with a frame of the spinning machine, and the other end of the rocker arm is provided with a chuck; the roller is rotatably connected with a frame of the spinning machine, and the periphery of the roller is tightly attached to the periphery of the bobbin clamped by the chuck; the spinning unit further comprises a yarn cutting mechanism, and the yarn cutting mechanism comprises a clamping arm; one end of the clamping arm is movably connected with a frame of the spinning machine, and the other end of the clamping arm is provided with a clamp holder; through the cooperation of the winding mechanism and the yarn cutting mechanism, the yarn can be automatically cut off under the condition that the spinning unit does not stop spinning, and the actions of automatic doffing and yarn feeding are completed.

Description

Spinning device and automatic doffing and feeding method thereof

Technical Field

The invention belongs to the technical field of textile machinery, and particularly relates to a spinning device and an automatic doffing and feeding method thereof.

Background

In the rotor spinning machine, compressed air is ejected from a rotor spinning nozzle to generate a rotating air flow in a spinning chamber, and the rotating air flow twists a fiber bundle to produce a yarn. Because the efficiency of artificial doffing is low, the joint rate and the joint quality depend on the technology of a car stop worker seriously, and the instability is large, the current spinning machine is provided with a doffing trolley which travels to a spinning unit needing doffing to perform automatic doffing.

Because the spinning machine is provided with a plurality of spinning units, when one spinning unit reaches a certain weight or reaches a certain length in the spinning process and needs to be changed, the doffing trolley moves to the front of the spinning unit to doff and change the bobbin. The automatic doffing trolley used at present is complex in structure, is provided with a supply part with bobbins, a suction pipe and a doffing system, and is relatively low in automation degree, so that the doffing time is long. In the doffing process, for a longer production line, the doffing operation needs to be realized by manually matching with a doffing trolley, and the production efficiency is influenced.

Through retrieval, relevant patents are disclosed for solving the problem that the doffing time is long due to the relatively low automation degree of the operation trolley. For example, the Chinese patent application has the application numbers: CN201810470776.8, published date: the invention patent of 2018, 9 and 28 discloses an automatic doffing trolley of a rotor spinning machine, which comprises a travelling rail and a trolley body mounted on the travelling rail, wherein the trolley body reciprocates along the travelling rail, and the trolley body is provided with a lifting device, an opening device, a pressing device, a pipe replacing device, a negative pressure air port opening device, a yarn shearing device, a yarn clamping device, a yarn poking device, a yarn feeding device and a control unit. The disadvantages of this solution are: the doffing trolley has more structures and relatively more steps needing operation, so that the installation and debugging operation and the action flow are relatively complicated, and the action flows of the whole doffing, yarn sucking, yarn guiding and tube feeding and the like are difficult to complete in a short time; and the spinning unit is required to stop spinning to complete the whole automatic doffing action flow. And the whole spinning machine only has one to two doffing trolleys, so the working efficiency is relatively low.

Disclosure of Invention

1. Technical problem to be solved by the invention

Aiming at the problems that the operation of a doffing trolley is complicated, a spinning unit needs to be stopped to complete the whole automatic doffing process, and the working efficiency is low, the invention designs a spinning device and an automatic doffing and feeding method thereof, so that each spinning unit can independently operate, when a yarn drum reaches a certain weight or a specific length, the spinning unit can automatically cut off the yarn under the condition of not stopping spinning, and the actions of automatic doffing and feeding are completed, thereby effectively solving the problems that the whole spinning machine only has one to two doffing trolleys, the spinning unit needs to stop spinning, the doffing trolleys cut off the yarn and feed the yarn, the working efficiency is relatively low, and the like.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a spinning device comprises a plurality of spinning units, wherein the spinning units comprise a cotton guide pipe, a drafting mechanism, a spinning device, a yarn storage mechanism and a winding mechanism which are sequentially arranged along the traveling direction of yarns, and the winding mechanism is electrically connected with a control mechanism of the spinning units; the winding mechanism comprises a rocker arm and a roller; one end of the rocker arm is rotatably connected with a frame of the spinning machine, and the other end of the rocker arm is provided with a chuck; the roller is rotatably connected with a frame of the spinning machine, and the periphery of the roller is tightly attached to the periphery of the bobbin clamped by the chuck; the spinning unit further comprises a yarn cutting mechanism, and the yarn cutting mechanism comprises a clamping arm; one end of the clamping arm is movably connected with a frame of the spinning machine, and the other end of the clamping arm is provided with a clamp holder.

When the bobbin reaches the set weight or the set length in the spinning process, the control mechanism controls the winding mechanism to stop winding, and simultaneously controls the spinning speed of the spinning unit to delay or controls the spinning time delay, and at the moment, the yarn spun by the spinning device is stored on the yarn storage mechanism. Through the nimble use to winding mechanism and yarn cutting mechanism, accomplish the automatic doffing and the automatic function of going up of each spinning unit to each spinning unit has realized mutual noninterference, does not need to shut down when the tube change and waits, realizes continuous production, has improved work efficiency greatly.

According to a further technical scheme, the winding mechanism further comprises a transverse moving part, wherein the transverse moving part comprises a yarn guide nozzle, and the yarn guide nozzle is used for transversely moving and winding the yarn on the bobbin clamped by the clamping disc. The cross moving piece can play a certain guiding role on the yarn, and the yarn is favorably wound on the bobbin.

The technical scheme is that the spinning machine further comprises a bobbin storage, wherein the bobbin storage is movably arranged on a frame of the spinning machine and is positioned above the roller; the bobbin storage contains a plurality of bobbins, and the bobbins can be automatically replaced through the bobbin storage.

The technical scheme is that the yarn storage device further comprises a yarn feeding mechanism, wherein the yarn feeding mechanism is positioned between the spinning device and the yarn storage mechanism; the yarn feeding mechanism comprises a leather roller and an output roller, the leather roller and the output roller are installed on a frame of the spinning machine, the leather roller is in contact connection with the output roller, and the output roller is driven to convey yarns to the yarn storage mechanism for storage.

According to the technical scheme, the yarn storage mechanism comprises a yarn storage roller and a flyer, the yarn storage roller is arranged on a frame of the spinning machine, the flyer is arranged on the yarn storage roller, the flyer is favorable for yarn guide, and the rotation resistance of yarns can be reduced.

According to the further technical scheme, the drafting mechanism is sequentially provided with a rear roller pair, a third roller pair, a middle roller pair and a front roller pair in the direction of yarn walking, the drafting mechanism can regularly elongate and thin the sliver to ensure that fibers in the sliver are gradually straightened, hooks are gradually eliminated, and the sliver is gradually made to reach the preset thickness.

The technical scheme is further characterized by further comprising a detection mechanism arranged on a frame of the spinning machine; the detection mechanism is positioned between the yarn feeding mechanism and the yarn storage mechanism, comprises an electronic yarn cleaner and a tension sensor, monitors the quality of the yarn, removes yarn defects influencing the product quality, improves the quality of the yarn and reduces the waste yarn amount.

The automatic doffing and feeding method of the spinning device adopts the spinning device and comprises the following steps:

the method comprises the following steps: doffing, controlling a winding mechanism to stop winding when needing to cut the yarn, clamping the yarn by a clamp holder on a clamping arm and cutting the yarn;

step two: and (3) feeding yarn, operating the bobbin storage to move downwards, dropping the bobbin in the bobbin storage above the roller and clinging to the periphery of the roller, closing the chuck to enable the cradle arm to clamp the bobbin, clamping the yarn between the bobbin and the chuck by the clamp holder, and rotating the roller to release the yarn clamped by the clamp holder after clamping.

The method utilizes the synergistic action of a rocker arm, a chuck and a roller in the winding mechanism and a clamping arm and a clamper in the yarn shearing mechanism to jointly complete the steps of automatic doffing and automatic yarn feeding, so that the whole complicated installation and debugging operation and action flow become simple and reliable, each spinning unit realizes mutual noninterference, no shutdown waiting is needed during the bobbin replacement, continuous production is realized, the manufacturing efficiency of spinning in each spinning unit can be improved, and the integral production efficiency of the spinning device is further improved.

According to a further technical scheme, in the first step, after the yarn is cut off by the clamp holder, the cradle arm is rotated reversely to drive the bobbin after winding to rotate above the conveying belt, the chuck is opened to enable the bobbin to fall on the conveying belt, the wound package can be conveyed through the conveying belt, and the integrated processing process is completed.

According to a further technical scheme, after a bobbin falls on a conveying belt, the cradle arm rotates forwards; the clamping arm rotates to drive the clamping device to clamp the yarn and rotate together above the chuck, and the operation can directly clamp the yarn between the bobbin and the chuck without additional operation for manual alignment.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) in the spinning process, when the bobbin reaches a certain weight or a certain length, the control mechanism of the spinning unit controls the winding mechanism to stop winding, controls the spinning speed to be reduced or controls the spinning delay to be stopped, clamps and cuts off the yarn through the clamp holder, after the cradle arm rotates, the bobbin after being wound is conveyed and is completely and a new bobbin is installed, the chuck of the cradle arm is closed, the bobbin is clamped, the clamp holder clamping the yarn is rotated and drives the clamp holder clamping the yarn to rotate together above the chuck of the cradle arm, the yarn clamped by the clamp holder is released while the roller rotates, the yarn can be brought onto the bobbin through the cradle arm chuck to be wound together, the automatic doffing and feeding action procedures are completed, the doffing and feeding method can be automatically completed under the condition that the spinning unit does not stop spinning, and each spinning unit can be independently completed, the operation process is simple and convenient, the shutdown waiting is not needed, and the spinning efficiency is improved.

(2) The driving device drives the yarn guide nozzle to reciprocate, so that the yarn can be transversely moved and wound on the bobbin, and the yarn guide nozzle can play a threading and guiding role on the yarn, so that the yarn can be better wound on the bobbin.

(3) According to the spinning device, the bobbin storage can be automatically lifted, empty bobbins can be placed on the target position through the lifting bobbin storage, the next spinning round is carried out, the bobbins do not need to be manually installed and detached, and the spinning device is convenient and rapid.

(4) The invention can drive the delivery roller to deliver the spun yarn to the yarn storage roller by clamping the spun yarn delivered from the spinning unit between the delivery roller and the leather roller.

(5) The flyer in the yarn storage mechanism can guide the yarn to the peripheral surface of the yarn storage roller for storage, and can continuously guide the yarn to the winding mechanism with certain tension, the flyer is favorable for yarn guide, the rotation resistance of the yarn can be reduced, and the high winding rigidity is realized.

(6) The drafting mechanism twists the sliver into a fine fiber bundle through four roller pairs, conveys the twisted fiber bundle into a spinning device for spinning, the four roller pairs are respectively driven by four groups of motors independently, the speed of each roller pair can be set freely to control the shape, the twist and the output speed of the yarn, and the drafting mechanism has the functions of speed increase, pause, reverse rotation and the like.

(7) The detection mechanism of the invention detects the yarn generated by the spinning unit through the electronic yarn clearer and the tension sensor before being wound by the yarn storage roller, the electronic yarn clearer can monitor the thickness of the running yarn, the tension sensor monitors the tension value of the running yarn, when the defect of the yarn is detected or the tension value of the yarn is lower than a set value, a detection signal is sent to the unit controller, and the unit controller sends a signal to cut off the yarn, so that the quality of the yarn can be enhanced, and the generation rate of waste yarn is reduced.

Drawings

FIG. 1 is a schematic view of a spinning apparatus according to the present invention in a spinning process and a full bobbin process;

FIG. 2 is a schematic diagram of a swing arm rotating to a doffing during spinning of the spinning unit of the present invention;

FIG. 3 is a schematic view showing the structure of the action of the independent cartridge magazine of the spinning unit of the present invention;

FIG. 4 is a schematic view showing the structure of the operation of the gripping arm of the spinning unit according to the present invention;

FIG. 5 is a diagram of the action process of the swing arm and the clamping arm of the spinning unit of the invention;

FIG. 6 is a schematic diagram of the cradle arm of the present invention with the chuck in an open position;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a schematic view of the clamp of the rocker arm of the present invention in a closed position;

fig. 9 is a top view of fig. 8.

In the figure:

1. a cotton guide pipe; 2. a sliver; 3. a fiber bundle; 4. a spinning unit; 5. a yarn; 6. a bobbin; 7. a cartridge magazine; 8. a conveyor belt;

10. a drafting mechanism; 11. a rear roller pair; 12. a third roller pair; 13. a pair of intermediate rolls; 14. a leather collar; 15. a front roller pair;

20. a yarn feeding mechanism; 21. a leather roller; 22. an output roller;

30. a detection mechanism; 31. an electronic yarn clearer; 32. a tension sensor;

40. a yarn storage mechanism; 41. a yarn storage roller; 42. a drive motor; 43. a flyer;

50. a winding mechanism; 51. a traverse member; 52. a yarn guide nozzle; 53. a drum; 54. a rocker arm; 55. a chuck;

60. a yarn cutting mechanism; 61. a clamp arm; 62. a clamper.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings. In the present specification, "upstream" and "downstream" mean upstream and downstream in the traveling direction of the sliver, the fiber bundle, and the yarn at the time of spinning.

Examples

The spinning device is a part of a spinning machine, omits the conventional components of a frame, a motor and the like of the spinning machine, and comprises a plurality of spinning units as shown in fig. 1 to 9, wherein the spinning units comprise a cotton guide pipe 1, a drafting mechanism 10, a spinning device 4, a yarn storage mechanism 40 and a winding mechanism 50 which are arranged in sequence along the traveling direction of a yarn 5, the winding mechanism 50 is electrically connected with a control mechanism of the spinning unit, and the control mechanism of the spinning unit is used for controlling the opening and the stopping of the winding mechanism 50 and controlling the spinning speed of the whole spinning unit; the winding mechanism 50 includes a rocker arm 54 and a drum 53; one end of the rocker arm 54 is rotatably connected with a frame of the spinning machine, and the other end is provided with a chuck 55; the roller 53 is rotatably connected with a frame of the spinning machine, and the periphery of the roller is tightly attached to the periphery of the bobbin 6 clamped by the chuck 55; the spinning unit further comprises a yarn cutting mechanism 60, wherein the yarn cutting mechanism 60 comprises a clamping arm 61; one end of the clamping arm 61 is movably connected with the frame of the spinning machine, and the other end is provided with a clamp 62.

The spinning device includes a body control mechanism (not shown) for collectively managing a plurality of spinning units, and the spinning flow of the present embodiment is such that a sliver 2 is guided out from a cotton guide 1, is drawn and twisted by a drawing mechanism 10 to become a fiber bundle 3, the fiber bundle 3 after the drawing is completed is twisted by a spinning machine 4 to become a yarn 5, the yarn 5 is discharged from the spinning machine 4, is subjected to transient yarn storage by a yarn storage mechanism 40, and is fed to a winding mechanism 50 by the yarn storage mechanism 40, the winding mechanism 50 can wind the yarn 5 on an empty bobbin 6 to form a package 9, and when the package 9 reaches a certain weight or the yarn 5 reaches a certain length, the yarn 5 is cut and replaced with a new bobbin 6. At present, when a conventional spinning device needs to change a bobbin, the automatic bobbin dropping is generally carried out by adopting an operation trolley, the operation trolley needs to carry out complicated installation and debugging operations and operation flow debugging before being used, and the operation trolley is difficult to complete the complicated operation flow of the whole bobbin dropping, yarn sucking and yarn guiding upper tube in a short time, so that the whole automatic bobbin dropping flow becomes complicated. On the other hand, the operation trolley can not complete the whole automatic doffing and yarn feeding action process of the yarn guiding upper tube under the condition of not stopping spinning, the spinning unit is required to stop operation, the number of the operation trolleys is limited, the operation trolleys need to stop for waiting, and the whole working efficiency of the spinning device is reduced.

In view of the above-mentioned defects, the present application aims to provide a spinning device with a simple structure, in which each spinning unit can complete the automatic doffing and feeding functions without stopping the spinning. The spinning unit in this embodiment includes a cotton guide 1, a drafting mechanism 10, a spinning unit 4, a yarn feeding mechanism 20, a detecting mechanism 30, a yarn storing mechanism 40, a winding mechanism 50, and a yarn cutting mechanism 60.

The draft mechanism 10 is provided with a rear roller pair 11, a third roller pair 12, an intermediate roller pair 13, and a front roller pair 15 in this order along the direction in which the yarn 5 travels, and the intermediate roller pair 13 is attached with a apron 14, and each roller pair is rotationally driven at a predetermined rotational speed. The drawing is a process of regularly drawing the sliver 2 to be thin, so that the fiber in the sliver 2 is gradually straightened, the hook is gradually eliminated, and the sliver 2 gradually reaches the preset thickness. During drafting, the fibers are gradually drawn out from the surrounding fiber groups one by one, and due to mutual friction, hooks are gradually eliminated, and the fibers are gradually curled smoothly and straightly. The drafting mechanism 10 is arranged near the downstream of the spinning machine, and the sliver 2 coming out of the cotton guide pipe 1 is sent into the drafting mechanism 10 to be drafted into the fiber bundle 3.

The fiber bundle 3 drafted by the draft mechanism 10 is supplied to the spinning unit 4, and the spinning unit 4 twists the fiber bundle 3 supplied from the draft mechanism 10 to produce the yarn 5. The spinning device 4 in the present embodiment generates a whirling airflow in the spinning chamber by the compressed air discharged from the air jet spinning nozzle, and applies a twist to the fiber bundle 3 by the whirling airflow to generate the yarn 5.

The downstream of the spinning device 4 is provided with a yarn feeding mechanism 20, the yarn feeding mechanism 20 comprises a leather roller 21 and an output roller 22, the leather roller 21 and the output roller 22 are installed on a frame of the spinning machine, the leather roller 21 is in contact connection with the output roller 22, the center of the leather roller 21 is a steel roller, and leather or artificial rubber is wrapped outside the steel roller, so that the friction force is increased. The yarn 5 discharged from the spinning unit 4 is nipped between the leather roller 21 and the delivery roller 22, and the delivery roller 22 is rotationally driven by a motor (not shown), whereby the yarn 5 can be fed to the yarn accumulating mechanism 40.

The yarn storage mechanism 40 is arranged at the downstream of the yarn feeding mechanism 20 and comprises a yarn storage roller 41, a flyer 43 and a driving motor 42, wherein the yarn storage roller 41 is arranged on a frame of the spinning machine, the flyer 43 is arranged on the yarn storage roller 41, and both the yarn storage roller 41 and the flyer 43 are driven by the driving motor 42 to rotate. The flyer 43 is a twisting machine made of aluminum alloy or light metal material, and is composed of a sleeve, two flyer arms and a presser finger, the shape of the flyer arm cross section is favorable for guiding yarn and reducing rotation resistance, and has higher winding rigidity. The flyer 43 is configured to be capable of rubbing against the yarn 5 during spinning, and is capable of guiding and accumulating the yarn 5 on the outer peripheral surface of the yarn accumulating roller 41, and the flyer 43 is capable of continuously feeding the yarn 5 to the winding mechanism 50 while maintaining a constant tension of the yarn 5. Thereby, the flyer 43 guides the yarn 5 to be temporarily accumulated on the outer peripheral surface of the yarn accumulating roller 41, and the yarn 5 is guided by the flyer 43 with a constant tension to be continuously fed to the winding mechanism 50.

The detection mechanism 30 is arranged on a frame of the spinning machine, the detection mechanism 30 is positioned between the yarn feeding mechanism 20 and the yarn storage mechanism 40, and comprises an electronic yarn clearer 31 and a tension sensor 32. The yarn 5 produced by the spinning unit 4 needs to be detected by the electronic yarn clearer 31 and the tension sensor 32 before being wound by the yarn storage roller 41. The electronic clearer 31 is an electromechanical device that detects and cuts yarn defects, and the electronic clearer 31 functions as: the thickness of the running yarn 5 is monitored. The tension sensor 32 is an instrument for measuring the magnitude of tension in the tension control process, and the tension sensor 32 functions as: the tension value of the running yarn 5 is monitored.

In the spinning process, the electronic yarn clearer 31 can convert the thickness change of the yarn 5 into a corresponding electric signal, if the thickness of the yarn 5 is detected to be not in accordance with a set value, the electronic yarn clearer 31 can generate a yarn defect detection signal, the signal can control the execution mechanism to cut off the yarn defects which are not in accordance with the set thickness after being processed, and similarly, under the condition that the tension sensor 32 detects that the tension of the yarn 5 is lower than the set value, the yarn defect detection signal can also be generated to control the yarn 5 to be cut off, and the yarn defects which have influences on the product quality are removed. The electronic yarn clearer 31 and the tension sensor 32 are adopted to detect the yarn 5, the yarn 5 is not damaged, the yarn clearing effect of the electronic yarn clearer 31 is relatively good, the adjustment is also convenient, and the waste yarn amount is reduced.

The winding mechanism 50 is arranged at the downstream of the yarn storage mechanism 40, the winding mechanism 50 comprises a traverse member 51, a roller 53, a cradle arm 54 and a chuck 55, the traverse member 51 comprises a yarn guide nozzle 52, and the yarn guide nozzle 52 is used for traversing and winding the yarn 5 on the bobbin 6 clamped by the chuck 55. When the drum 53 is brought into contact with the outer peripheral surface of the bobbin 6 and the drum 53 is rotated counterclockwise, the bobbin 6 is driven to rotate clockwise, the yarn guide 52 is reciprocated by a driving mechanism (independent driving mechanism for each spinning unit) not shown, the drum 53 is driven to rotate by an independent motor not shown, and the winding mechanism 50 rotationally drives the bobbin 6 in contact with the drum 53 to traverse the yarn 5 and wind the yarn onto the drum 53. The cradle arm 54 is rotatable about the root portion as a rotation center, and rotatably supports the bobbin 6 for winding the yarn 5, and a driving machine (not shown) is connected to the cradle arm 54, and the driving machine may be an air cylinder, a torque motor, or another type, and when the bobbin 6 winds the yarn 5 to form the package 9, the diameter of the package 9 increases, and the driving machine is configured to be able to keep the surface of the package 9 in a proper contact force with the drum 53, and continue winding the yarn 5.

The spinning unit also comprises a bobbin storage 7, wherein the bobbin storage 7 is movably arranged on a frame of the spinning machine and is positioned above the roller 53; the bobbin storage 7 is internally provided with a plurality of bobbins 6, the bobbins 6 can be automatically replaced, manual operation is not needed, and time and labor are saved.

In addition, the control mechanism of the yarn spinning unit in the embodiment adopts the PCB, and the PCB can be used for realizing the miniaturization and the light weight of the system and realizing the high speed of signal transmission; and the PCB adopts modern management, and can realize standardized, large-scale and automatic production, thereby ensuring the consistency of product quality. Because the PCB is produced in a standardized design and in a large scale, once the system fails, the PCB can be replaced quickly, conveniently and flexibly, and the work of the system can be recovered quickly.

The spinning step before the yarn cutting in this embodiment is a conventional spinning step, and the flow of the doffing and the feeding operation in the spinning process is shown in fig. 5. In this embodiment, a sensor for detecting the number of rotations of the bobbin 6 is included, the sensor detects the number of rotations of the bobbin 6, the weight of the bobbin 6 or the length of the yarn 5 can be obtained by converting the number of rotations of the bobbin, when the weight of the bobbin 6 reaches a predetermined value or the length of the yarn 5 reaches a predetermined value, the sensor sends a signal to the PCB, the PCB controls the motor for driving the drum 53 of the winding mechanism 50 to rotate to stop rotating, and further controls the drum 53 to stop winding, and the bobbin 6 stops winding accordingly. At the same time, the PCB controls the spinning speed of the spinning unit to be reduced or stops the spinning delay, and the spun yarn 5 is temporarily stored on the yarn storage roller 41. At this time, the gripper 62 of the yarn cutting mechanism 60 grips the yarn 5 and cuts the yarn 5, and after the yarn cutting is completed, the gripper 62 holds the yarn 5 and waits. The driving machine drives the cradle arm 54 to rotate reversely, so as to drive the wound package 9 to rotate above the conveyer belt 8, and the chuck 55 of the cradle arm 54 is opened to drop the package 9 on the conveyer belt 8, as shown in fig. 1, so that the integrated processing and transportation process is completed. Next, the bobbin storage 7 is moved down, a new bobbin 6 is exchanged for the spinning device, the bobbin 6 is dropped onto the upper side of the drum 53 and is closely attached to the outer periphery of the drum 53, and after the new bobbin 6 is exchanged, the driver drives the cradle arm 54 to rotate back to the initial position, the chuck 55 is closed, and the new bobbin 6 is clamped, as shown in fig. 2. After the yarn is clamped, the bobbin storage 7 moves up to the original position, the clamping arm 61 is driven to rotate, the clamping device 62 is driven to clamp the yarn 5 and rotate together above the chuck 55 of the cradle arm 54, as shown in fig. 3, the control mechanism controls the roller 53 to start rotating, meanwhile, the clamping device 62 releases the clamped yarn 5, the roller 53 can drive the bobbin 6 and the yarn 5 to be wound together, therefore, the yarn 5 can be wound on the bobbin 6, and the automatic doffing and automatic winding action program is completed by combining with the diagram shown in fig. 4.

The other implementation mode is as follows: when the weight of the bobbin 6 reaches a predetermined value or the length of the yarn 5 reaches a predetermined value, the control mechanism of the spinning unit controls the roller 53 of the winding mechanism 50 to stop rolling, and after the roller 53 stops winding, the bobbin 6 stops winding. At the same time, the control mechanism of the spinning unit controls the spinning speed to be reduced or stops the spinning delay, and the spun yarn 5 is temporarily stored on the yarn storage roller 41. At this time, the gripper 62 of the yarn cutting mechanism 60 grips the yarn 5 and cuts the yarn 5, and after the yarn cutting is completed, the gripper 62 holds the yarn 5 and waits. The driving machine drives the cradle arm 54 to rotate reversely, so as to drive the wound package 9 to rotate above the conveyer belt 8, and the chuck 55 of the cradle arm 54 is opened to drop the package 9 on the conveyer belt 8, as shown in fig. 1, so that the integrated processing and transportation process is completed. Then, the driver drives the swing arm 54 to rotate back to the initial position, at this time, the chuck 55 is in the open state, the swing arm 54 returns to the original position and simultaneously drives the clamp arm 61 to rotate, and the clamp 62 is driven to clamp the yarn 5 and rotate together to the front of the chuck 55 side of the swing arm 54 to wait. At this time, the bobbin magazine 7 is moved down, the spinning device is replaced with a new bobbin 6, the bobbin 6 is dropped onto the upper side of the drum 53 and is closely attached to the outer periphery of the drum 53, the operation chuck 55 is closed and the new bobbin 6 is clamped, and as shown in fig. 2, the yarn 5 is clamped between the chuck 55 and the bobbin 6, as shown in fig. 7 and 8, the operation can directly clamp the yarn 5 between the bobbin 6 and the chuck 55, and no separate operation alignment or manual alignment is required. After clamping, the magazine 7 is moved back up to the home position, as shown in fig. 3. The control mechanism controls the drum 53 to start rotating, and simultaneously the gripper 62 releases the gripped yarn 5, the drum 53 can drive the bobbin 6 to wind together with the yarn 5, thereby winding the yarn 5 on the bobbin 6, and the automatic doffing and automatic winding operation procedures are completed as shown in fig. 8 and 9.

During the doffing and feeding operations, the control mechanism controls the speed at which the yarn can be spun, and the yarn 5 twisted and formed by the spinning device 4 is stored on the yarn storage roller 41 in the yarn storage mechanism 40, whereby the spinning unit can be made to stop spinning. The gripper 62 may alternatively be a pneumatic cylinder or other operable means, which is a device for holding and manipulating an object, and which is capable of performing some action while gripping and releasing the object. The gripper 62 has certain force and shape constraints when gripping the yarn 5 to ensure that the yarn 5 should be completely released during the movement, retention and loading process.

The automatic doffing and automatic winding steps of the spinning unit are jointly completed by the cooperation of the winding mechanism 50 and the yarn cutting mechanism 60 through the rocker arm 54, the chuck 55, the roller 6, the clamping arm 61, the clamper 62 and the bobbin 6. Under the condition that do not have automatic doffing dolly and not stop spinning, the action procedure of automatic doffing and last yarn can both be accomplished smoothly to every spinning unit, and whole action flow is comparatively simple, reliable to the automatic doffing of each spinning unit and automatic yarn feeding independently go on, mutual noninterference, consequently need not stop work when the section of thick bamboo of trading and wait, realize continuous production, not only can improve the manufacturing efficiency of spinning in each spinning unit, can reduce useless yarn volume and improve spinning production efficiency moreover.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A spinning device comprises a plurality of spinning units, wherein the spinning units comprise a cotton guide pipe (1), a drafting mechanism (10), a spinning device (4), a yarn storage mechanism (40) and a winding mechanism (50) which are sequentially arranged along the traveling direction of yarn (5), and the winding mechanism (50) is electrically connected with a control mechanism of the spinning units; the winding mechanism (50) comprises a rocker arm (54) and a roller (53); one end of the rocker arm (54) is rotatably connected with a frame of the spinning machine, and the other end of the rocker arm is provided with a chuck (55); the roller (53) is rotatably connected with a frame of the spinning machine, and the periphery of the roller is tightly attached to the periphery of the bobbin (6) clamped by the chuck (55); the method is characterized in that: the yarn cutting device further comprises a yarn cutting mechanism (60), wherein the yarn cutting mechanism (60) comprises a clamping arm (61); one end of the clamping arm (61) is movably connected with the frame of the spinning machine, and the other end of the clamping arm is provided with a clamp holder (62).

2. A spinning apparatus according to claim 1, characterised in that: the winding mechanism (50) further comprises a transverse moving part (52), the transverse moving part (52) is provided with a yarn guide nozzle (51), and the yarn guide nozzle (51) is used for transversely moving and winding the yarn (5) onto the bobbin (6) clamped by the clamping disc (55).

3. A spinning apparatus according to claim 2, characterised in that: the spinning machine further comprises a bobbin storage (7), wherein the bobbin storage (7) is movably arranged on a frame of the spinning machine and is positioned above the roller (53); the bobbin storage (7) is internally provided with a plurality of bobbins (6).

4. A spinning apparatus according to claim 1, characterised in that: the yarn feeding mechanism (20) is further included, and the yarn feeding mechanism (20) is positioned between the spinning device (4) and the yarn storage mechanism (40); the yarn feeding mechanism (20) comprises a leather roller (21) and an output roller (22), the leather roller (21) and the output roller (22) are installed on a frame of a spinning machine, and the leather roller (21) is in contact connection with the output roller (22).

5. A spinning apparatus according to claim 4, characterised in that: the yarn storage mechanism (40) comprises a yarn storage roller (41) and a flyer (43), the yarn storage roller (41) is installed on a frame of the spinning machine, and the flyer (43) is installed on the yarn storage roller (41).

6. A spinning apparatus according to claim 5, characterised in that: the drafting mechanism (10) is sequentially provided with a rear roller pair (11), a third roller pair (12), a middle roller pair (13) and a front roller pair (15) along the running direction of the yarn (5).

7. A spinning apparatus according to claim 6, characterised in that: also comprises a detection mechanism (30) arranged on the frame of the spinning machine; the detection mechanism (30) is positioned between the yarn feeding mechanism (20) and the yarn storage mechanism (40) and comprises an electronic yarn cleaner (31) and a tension sensor (32).

8. An automatic doffing and feeding method of a spinning apparatus using a spinning apparatus according to any one of claims 1 to 7, characterized by comprising the steps of:

the method comprises the following steps: doffing, when needing to cut the yarn, controlling a winding mechanism (50) to stop winding, clamping the yarn (5) by a clamp (62) on a clamping arm (61) and cutting the yarn (5);

step two: the method comprises the steps of feeding yarn, operating a bobbin storage (7) to move downwards, dropping a bobbin (6) in the bobbin storage (7) above a roller (53) and enabling the bobbin to be tightly attached to the periphery of the roller (53), closing a chuck (55) at the moment to enable a swing arm (54) to clamp the bobbin (6), clamping the yarn (5) between the bobbin (6) and the chuck (55) through a clamp (62), rotating the roller (53) after clamping is completed, and releasing the yarn (5) clamped by the clamp (62).

9. An automatic doffing and feeding method of a spinning apparatus according to claim 8, wherein: in the first step, after the clamp holder (62) cuts off the yarn (5), the swing arm (54) is reversed to drive the bobbin (6) which is wound to rotate to the upper part of the conveying belt (8), and the chuck (55) is opened to enable the bobbin (6) to fall on the conveying belt (8).

10. An automatic doffing and feeding method of a spinning apparatus according to claim 9, wherein: after the bobbin (6) falls on the conveyer belt (8), the swing arm (54) rotates forwards; the clamping arm (61) rotates to drive the clamp holder (62) to clamp the yarn (5) and rotate to the position above the chuck (55).