CN217173976U - Ring spinning machine - Google Patents

Abstract

The utility model discloses a ring spinning machine, including a plurality of spinning units that set up side by side, every spinning unit all has drafting device and roving and stops feeding device, roving stops feeding device and has clamping element and actuating lever, clamping element is connected to the first end of actuating lever, promotes under the actuating lever clamping element can be partly rotatory around drafting device's lower roller, and every spinning unit all is provided with a pole, the pole is used for promoting the actuating lever, the pole can set up epaxially pivotally, and the upper end of pole extends to drafting device's top, the lower tip of pole extends to the second tip of actuating lever.

Description

Ring spinning machine

Technical Field

The utility model relates to a spinning machine, especially have roving and stop ring spinning machine of feeding device, wherein the roving stops the feeder and can be operated conveniently and reset, especially can be through maintaining robot convenient automatic re-setting.

Background

A ring spinning machine includes a row of spinning units arranged adjacent to each other, each spinning unit including a roving draft device from which a roving is carried to a twisting device after being drafted by the roving draft device, the produced yarn being drawn out of the twisting device and wound in a winding device to form a package on a tube placed on a rotatable spindle, thereby forming a cop, i.e., a tube having a yarn package. If yarn production is interrupted (e.g. due to a yarn break), it is necessary to resume yarn production at the spinning unit. After the spinning is interrupted, the roving is fed on to the drawing device and the fibres are subsequently sucked into the waste if the drawing device is still working, which results in a waste of fibre raw material. Therefore, many current ring spinning machines are provided with roving stopping devices, which can stop feeding of the roving of the spinning unit in time when the yarn production of the spinning unit is interrupted, and other spinning units continue to produce yarns without being influenced.

German patent DE3815202a1 discloses a roving stopping device on a ring spinning machine, the drafting device of which has three roller pairs mounted in pairs on respective shafts for each spinning unit, each pair of rollers having a lower roller and an upper roller pressed against the lower roller. The roving stopping device has at least one clamping element which can partially rotate around a lower roller of the drafting device, lift a corresponding upper roller from the lower roller and fix the roving, and a shell of the roving stopping device is fixed on a fixing part of the drafting device and comprises a working element, a driving rod (11) of the roving stopping device can move through the working element and is arranged below the lower roller. At the same time, the driving rods (11) are arranged in the vertical middle planes (M) of the respective spinning stations, said middle planes containing a roving channel (7) which, by rotating the handle (14), drives the driving rods so that the clamping elements are inserted between the upper and lower rollers, which separate the latter and fix the roving, thus achieving the purpose of stopping the roving feed. The clamping element can be separated from the space between the upper roller and the lower roller by rotating the handle, so that the roving is fed again under the clamping of the upper roller and the lower roller. Likewise, european patent EP357894a1 discloses a similar roving stop device.

German patent DE3404291a1 discloses a roving stopping device on a ring spinning machine, which is characterized in that in addition to a clamping element for stopping the roving between a lower roller and an upper roller, a clamping element is also arranged between the lower roller and a lower apron, and the clamping element can partially rotate around the lower roller to separate the lower apron from the lower roller, so that the feeding of the roving is stopped. And the clamping element is separated from the position between the lower leather ring and the lower roller by rotating the handle, so that the roving is fed again under the clamping of the upper roller and the lower leather ring.

Swiss patent CH674028a5 discloses a roving stopping device, in which, when the spinning at the spinning station is interrupted, a sensor detects the yarn breakage and sends an interruption signal, and a clamping element of the roving stopping device enters the clamping line of the roller pair under the action of spring force, so that the upper roller of the roller pair is lifted and the roving is fixed. After the maintenance operation is finished, a maintainer enables the clamping element to leave between the upper roller and the lower roller by rotating the handle, so that the roving is fed again under the clamping of the upper roller and the lower roller, and the automatic stop feeding of the roving stop device is realized by the device. Furthermore, german patent DE3123476a1 discloses a similar automatic control device which automatically controls the roving stopping device to stop the feeding of the roving. But still requires maintenance personnel to resume the roving transport by pushing on the handle after the maintenance operation is completed.

In the prior art, the stop feeding of the roving can be realized by a manual operation handle of a maintenance worker, and can also be realized by an automatic device with a spring for example after a sensor detects a yarn breaking signal. However, after the maintenance work is completed, the maintenance personnel are required to manually operate the handle, so that the feeding of the roving is resumed. Disadvantageously, the handle of the known roving parking device is usually connected at one end directly to the clamping element of the roving parking device, or at one end pivotally connected to a fixed part of the drafting device, and then pushed by a driving rod connected to the handle. The structure leads the installation of the handle to be more complex, and particularly in the extremely compact and limited space of the ring spinner, the installation and the operation of the handle are easily interfered by other parts of the spinner, and the operation is very inconvenient.

In addition, at present, a maintenance robot is provided on a ring spinning machine with a high degree of automation to replace a maintenance worker as much as possible and to fully automate maintenance work, the maintenance robot being capable of moving along a row of spinning units of the ring spinning machine, and upon receiving an interrupt signal of a certain spinning unit, the maintenance robot being capable of stopping at the spinning unit to perform maintenance operation at the spinning unit. For example, chinese patents CN113293471A, CN113122976A and CN113939619A all disclose various maintenance robots for ring spinning machines. On a ring spinning machine without a roving stopping device, after the spinning of a spinning unit is interrupted, maintenance work such as yarn splicing can be carried out by a maintenance robot, although the waste of raw roving materials can be caused during waiting for maintenance, the spinning unit can continue spinning after the maintenance work of the maintenance robot is finished, and extra intervention of maintenance personnel is not needed. On the ring spinning machine that is provided with roving stopping device at present, after the spinning of spinning unit was interrupted, roving stopping device can make roving stop the feeding automatically, and the maintenance robot carries out maintenance work afterwards, and after the maintenance work was accomplished, roving stopping device can't the automatic recovery, can't the feeding of automatic recovery roving promptly, leads to this spinning unit can't continue spinning work under the condition that does not have maintainer's intervention, also says so, still needs maintainer extra manual operation to resume roving stopping device and make roving refeed.

Disclosure of Invention

The utility model aims at overcoming the defect that prior art exists, provide a ring spinning machine, its spinning unit's drafting arrangement all is provided with roving and stops feeding device, roving stops feeding device and all can be through the pole of an additional setting by maintainer convenient and simply operate the reset or simply operate the reset by the maintenance robot.

Specifically, the ring spinning machine comprises a plurality of spinning units arranged in parallel, each spinning unit is provided with a drafting device and a roving stopping device arranged on the drafting device. The roving stopping device is used for stopping feeding of the roving when spinning is interrupted. Wherein the roving stop-feed device has a clamping element and a driving rod, the two ends of the driving rod are respectively defined as a first end and a second end, and the clamping element is connected to the first end of the driving rod. The clamping element can be partially rotated around the bottom roller of the drafting device under the push of the driving rod. Each spinning unit is provided with a lever for pushing the driving rod. The lever is pivotably arranged on a shaft extending in the longitudinal direction of the ring spinning machine and located between two ends of the lever, which are respectively defined as an upper end and a lower end, preferably located relatively closer to the lower end of the lever, such that the center of gravity of the lever is located between the upper end of the lever extending above the drafting device and the shaft, and the lower end of the lever extending to the second end of the drive lever. Alternatively, the lever can also be arranged pivotably on a separately assigned shaft (suspension rod or suspension) of each spinning unit.

Advantageously, by pushing or lifting the upper end of the rod upwards, the rod can rotate around its axis, so that the lower end, during movement, contacts and pushes the driving rod in motion, so that the clamping element of the roving stop device rotates around the lower roller of the drafting device, leaves the clamping thread of the roller pair, releases the roving, i.e. the roving stop device is reset, the roving can be re-fed, and the spinning is resumed.

In particular, the bar is preferably curved and has a centre of gravity located between the upper end and the shaft, a bracket being fixed to the frame for supporting the bar. The shaft of the rod is arranged on the frame above the drafting device.

The ring spinning machine may be further provided with a maintenance robot movable along a plurality of spinning units of the ring spinning machine and stoppable at a specific spinning unit so as to perform a maintenance operation at the spinning unit. The maintenance robot is provided with an actuating device connected with a central controller, after the maintenance operation is finished, the actuating device can apply force to the upper end part of the rod to enable the rod to rotate around the shaft, so that the lower end part of the rod pushes the driving rod to enable the clamping element to rotate around the lower roller of the drafting device, the roving stopping device is enabled to recover the initial position to recover the feeding of the roving, the spinning unit can continue to produce the yarn, the loss of the roving is reduced, the workload of maintenance personnel is reduced, and the production efficiency is improved.

In the present invention, the clamping element and the drive rod of the roving stopping device are in the home position under normal spinning conditions. When the clamping element is clamped into the drafting device under the push of the driving rod, the roving stops feeding, and the spinning stops. When the clamping element leaves the drafting device under the push of the driving rod, namely the roving stopping and feeding device restores the original position (reset), the roving is restored to be fed, and the spinning is normally carried out.

After the technical scheme is adopted, the utility model discloses following positive effect has:

the utility model discloses simple structure, maintainer can operate, resume this roving and stop initial condition of feeding device on spinning unit's upper portion, especially can operate in spinning unit's the place ahead, and this is especially friendly and convenient to maintainer. For the spinning machine provided with the maintenance robot, the actuating device can be controlled to reset the roving stopping device only by correspondingly arranging the actuating device on the maintenance robot, so that the production efficiency can be improved.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:

FIG. 1 is a schematic view of a ring spinning machine with a maintenance robot;

fig. 2 is a schematic view of the structure of the drafting device of a spinning unit according to the present invention;

the reference numbers in the drawings are as follows: 1. a ring spinning machine; 2. a spinning unit; 31. a headstock; 32. the tail of the vehicle; 4. a roving bobbin; 5. a drafting device; 51. feeding roller pairs; 52. a middle roller pair; 53. a pair of delivery rollers; 6. roving; 7. a bobbin; 8. a spindle; 9. maintaining the robot; 10. a pressurizing load arm; 11. a shaft I; 12. a first endless belt; 13. a second endless belt; 14. a shaft II; 15. a roving stopping device; 16. a clamping element; 17. a drive rod; 17.1, a first end; 17.2, a second end; 19. a rod; 19.1, upper end; 19.2, lower end; 20. a support; 21. an actuating device; 22. a yarn.

Detailed Description

Fig. 1 schematically shows a ring spinning machine 1 according to the invention, which has a plurality of spinning units 2 arranged next to one another. The spinning unit 2 is located between the head 31 and the tail 32 in the longitudinal direction x of the ring spinning machine 1. The head 31 and tail 32 of the ring spinning machine 1 may comprise bearings, drives, controls etc. necessary for the operation of the machine. As further shown, for example, at two spinning units 2 schematically shown in fig. 1, each spinning unit 2 comprises a roving bobbin 4, the roving bobbin 4 being arranged above the drafting device 5 and the roving 6 being wound on the roving bobbin 4. The roving 6 extends from the roving bobbin 4 via a drafting device 5 where it is drawn into a yarn 22 and then guided via a yarn guide to a yarn twist forming element. A traveler, a ring (not shown), etc. winds the finished yarn around the bobbin 7. The bobbin 7 is placed on a spindle 8. Optionally, a maintenance robot 9 is provided, the maintenance robot 9 moving along the ring spinning machine 1, and in case of a broken yarn, the maintenance robot 9 moving to the corresponding spinning unit 2 and automatically repairing the broken yarn. The individual spinning units 2 can be equipped with spindle monitors or other sensors for monitoring the ring traveler in order to detect yarn breakage. Alternatively or additionally, the spinning unit 2 can be equipped with a single spindle drive.

Fig. 2 schematically shows a schematic structural diagram of a drafting device 5 of a spinning unit 2 of a ring spinning machine 1 according to the present invention, which mainly includes a feeding roller pair 51, a middle roller pair 52, an output roller pair 53, and three pairs, each having a driving lower roller and a driven upper roller (or called leather roller) pressing on the lower roller. The top rollers are each fixed to a pressure-loading arm 10, which pressure-loading arm 10 is mounted so as to be rotatable about an axis I11 and can exert pressure so that it presses against the corresponding bottom roller. The rollers of the middle roller pair 52 are respectively provided with a first annular belt 12 and a second annular belt 13 which are used for clamping the roving. The roving stop 15 is of the prior art and has various variants, the roving stop 15 being arranged on the drafting device 5, the roving stop 15 comprising a clamping element 16 and a driving rod 17 and being arranged below the pair of rollers, the clamping element 16 partially surrounding the lower roller of the pair of feed rollers 51 and being rotatable around the lower roller, the clamping element 16 being connected to a first end 17.1 of the driving rod 17, the other end 17.2 of the driving rod 17 passing through and emerging from a housing 18 of the roving stop 15, which housing 18 is fixable to a fixed part of the drafting device, for example to the shaft i 11 of the pressure-loading arm 10. The housing 18 is provided with a working element, for example, as disclosed in DE3123476a1 or EP357894a1, which can control the movement of the drive rod 17. The working element may for example comprise a spring and a relay connected to the central controller, the spring is normally in a compressed state and is fixedly connected to the driving rod 17 via a bayonet on the driving rod 17 and a latch controlled by the relay, when the latch is moved out of the bayonet under the control of the relay, the driving rod 17 is linearly moved by the elastic force released by the spring (not shown in detail in the drawings in this embodiment), so as to drive the clamping element 16 to rotate around the lower roller, so that the clamping element 16 is clamped between the upper roller and the lower roller of the feeding roller pair 51, i.e. the corresponding upper roller is lifted from the lower roller and the roving is fixed, and the feeding of the roving is stopped. When spinning is resumed after the end of the maintenance operation, it is necessary to move the driving rod 17 in the opposite direction to rotate the gripping element 16 out of between the top and bottom rollers, i.e. to reset the roving stop 15. Since the ring spinning machine is extremely compact and the roving stopping device 15 is reset for the convenience of the operation of the maintenance personnel, a shaft ii 14 is arranged on a fixed part (for example, on a frame) above the drafting device 5 of the ring spinning machine 1, the shaft ii 14 is arranged along the longitudinal direction X of the ring spinning machine 1, a rod 19 is arranged on the shaft ii 14 corresponding to each spinning unit, the rod 19 can be arranged on the shaft ii 14 in a pivoting manner, two end parts of the rod 19 are respectively defined as an upper end part 19.1 and a lower end part 19.2, the shaft ii 14 is approximately arranged at a position which is lower than the middle part of the rod 19, namely the position of the shaft ii 14 is relatively closer to the lower end part of the rod 19, the rod 19 can be arc-shaped (also can be in other shapes, for example, a bent shape formed by two straight line segments), the upper end part 19.1 of the rod 19 extends into the space above the drafting device 5 for the convenience of the operation of the maintenance personnel, the lower end 19.2 of the rod 19 extends to the second end 17.2 of the driving rod 17, as shown in fig. 2, the rod 19 is arc-shaped as a whole, and since the shaft ii 14 is located at a position lower than the middle of the rod 19, the center of gravity of the rod 19 is located between the upper end 19.1 and the shaft ii 14, and due to gravity, the rod 19 has a tendency to rotate counterclockwise around the shaft ii 14, but is blocked by the bracket 20 (other types of blocking elements may be provided), and the upper end 19.1 of the rod 19 does not lower down to the drafting device 5. When a maintenance person exerts an upward force on the upper end 19.1 of the lever 19, the lever 19 can rotate clockwise about its pivot axis ii 14, while the lower end 19.2 of the lever 19, when rotating, just contacts the second end 17.2 of the driving rod 17, thereby pushing the driving rod 17 to move, so that the clamping element 16 rotates out of between the upper roller and the lower roller, i.e. the roving stop-feed device 15 is reset, the feeding of the roving is restarted, and the spinning is restarted. Alternatively, the shaft ii 14 arranged in the longitudinal direction X of the ring spinning machine 1 can be replaced by a separate shaft (or suspension rod, suspension, not shown) associated with each spinning unit 2, the rod 19 of said each spinning unit being pivotably arranged on said respective shaft (or suspension rod, suspension).

Preferably, the ring spinning machine 1 can be equipped with a maintenance robot 9, as shown in fig. 1 and 2. A rail (not shown) on which a maintenance robot 9 moves is provided in front of the ring spinning machine 1, and the maintenance robot 9 can move along the plurality of spinning units 2 of the ring spinning machine 1 on the rail and can stop at a specific spinning unit 2. When a sensor (not shown) of a spinning unit detects that a yarn break occurs in a certain spinning unit, a central controller (not shown) sends a signal to control the maintenance robot 9 to move to the corresponding spinning unit 2 and automatically repair the yarn break and other maintenance operations. The maintenance robot 9 is also provided with an actuator 21 connected to the central control, which actuator 21 is capable of applying an upward force to the upper end 19.1 of the rod 19 after the maintenance operation has been completed, so that the rod 19 is rotated clockwise about the axis ii 14, so that the lower end 19.2 of the rod 19 pushes the driving rod 17 and the clamping element 16 is rotated about the lower roller of the drafting device, so that the clamping element 16 is rotated out of between the upper roller and the lower roller, i.e. the roving stopping device 15 is reset, the roving starts to be fed again and the spinning starts again. The actuating device 21 can be a cylinder, and has simple structure and low cost. The actuating device 21 can also be a motor and a rod or block controlled by the motor, by means of which element (rod or block) the pushing force is exerted on the rod 19.

Utilize the utility model discloses, advantageously, maintainer can very conveniently stop feeding device 15 to the roving and reset the operation, make the roving feeding of restarting, the spinning restarts. On the ring spinning machine 1 provided with the maintenance robot 9, the actuating device 21 on the maintenance robot 9 can perform reset operation on the roving stopping device 15 under the control of the central controller, so that the feeding of the roving is restarted, the spinning is restarted, and the full-automatic maintenance operation is realized. The utility model discloses simple structure, it is with low costs, be convenient for installation and operation, can realize the automation mechanized operation and can improve production efficiency.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1. A ring spinning machine (1) comprising a plurality of spinning units (2) arranged side by side, each spinning unit (2) having a drafting device (5) and a roving stop (15) arranged on the drafting device (5), the roving stop (15) having a clamping element (16) and a driving rod (17), the clamping element (16) being connected to a first end (17.1) of the driving rod (17), the clamping element (16) being partially rotatable around a lower roller of the drafting device (5) under the thrust of the driving rod (17), each spinning unit (2) being provided with a rod (19), the rod (19) being intended to thrust the driving rod (17), characterized in that: the lever (19) is pivotably arranged on the shaft II (14) and the upper end (19.1) of the lever (19) extends above the drafting device (5) and the lower end (19.2) of the lever (19) extends to the second end (17.2) of the drive lever (17).

2. A ring spinning machine (1) according to claim 1, characterized in that the shaft II (14) extends in the longitudinal direction of the ring spinning machine (1), and the rod (19) is rotatable about the shaft II (14) with its upper end (19.1) driven, so that the lower end (19.2) contacts and pushes the driving rod (17) to move, resetting the roving stopping device (15).

3. A ring spinning machine (1) according to claim 1, characterized in that the rod (19) is arc-shaped and the centre of gravity of the rod (19) is located between the upper end (19.1) and the shaft II (14), the shaft II (14) being arranged on the frame of the spinning machine above the drafting device (5), a support (20) fixed on the frame of the spinning machine being used to support the rod (19).

4. A ring spinning machine (1) according to any of claims 1-3, characterized in that it further comprises a maintenance robot (9), said maintenance robot (9) being movable along a plurality of spinning units (2) of said machine (1) and being able to stop at a specific spinning unit (2), said maintenance robot (9) having an actuating device (21) connected to a central control, said actuating device (21) being able to exert a pushing force on the upper end (19.1) of the lever (19) to cause the rotation of the lever (19) about said axis II (14), so that the lower end (19.2) of the lever (19) pushes said driving rod (17) to cause the rotation of the gripping element (16) about the lower roller of the drafting device (5).

5. A ring spinning machine (1) according to claim 4, characterized in that the actuating means (21) on the service robot (9) is a pneumatic cylinder.

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