Annular track positioning device for automatic wiring unit

Abstract

The invention relates to an automatic wiring unit (2) for a ring spinning machine (1) having an annular track (3), comprising a housing (6), a tower device (4), a control unit (2b) for a wiring assistance module, in which an encoder (8) is arranged in the housing (6) that can be moved on the tower device (4), and a measuring device (9) is mounted on the tower device (4), the method is used for determining the position of an annular track (3) of the ring spinning machine (1).

Description

TECHNICAL FIELD

[0001] The present invention relates to an automatic splicing unit for splicing of broken end of yarn in a textile ring spinning machine. More particularly, the present invention relates to an improved sensing and positioning device of an automatic splicing unit for a ring rail arrangement of a textile ring spinning machine. BACKGROUND

[0002] In textile mills, yarn breakage in ring spinning machines is a frequent problem that needs constant attention. Today, yarn breakage is still an unavoidable problem in ring spinning machines, which forces a large number of workers to continuously monitor the ring spinning machines on both sides of the entire length of the machine frame, which usually has more than 1600 spindles. The broken yarn has to be spliced manually and the spinning sequence has to be restarted after the yarn breakage to avoid waste of yarn.

[0003] As an improvement over the conventional manual splicing method, automatic splicing units are being developed. The automatic splicing equipment involves a robot or a worker in a splicing vehicle or a splicing device with an inbuilt drive unit and a sensing unit. Such automatic splicing equipment advances towards the ring spinning machine for the splicing operation and returns after completing the splicing operation.

[0004] Generally, the automatic splicing unit comprises a plurality of splicing assistance modules, i.e., a yarn pick-up module, a yarn insertion module, a yarn suction module, a spindle braking module, a yarn splicing module, each of which is mounted in a separate housing. The ring rail of the ring spinning machine moves up and down during the machine running condition. All the said splicing assistance modules need to move up and down precisely in a synchronized manner with respect to the up and down movement of the ring rail of the ring spinning machine.

[0005] In the existing device of the automatic splicing unit, a complex device such as a pull wire sensor is used. The said sensor is provided with a pull wire, which outputs a value for synchronizing the up and down movement of the splicing assistance modules with the up and down movement of the ring rail of the ring spinning machine. This type of pull wire sensor results in damage to the ring rail and various splicing modules of the automatic splicing unit. The said damage to the automatic splicing unit and the ring rail results in frequent replacement and affects the splicing operation, resulting in low splicing efficiency of the automatic splicing unit. The frequent replacement also results in higher cost and affects the overall production of the textile ring spinning machine.

[0006] During the splicing operation, reliable movement of the up and down movement of the splicing assistance modules of the automatic splicing unit with respect to the ring rail of the ring spinning machine is required.

[0007] The present invention aims to overcome the above-mentioned limitations related to the automatic splicing unit of the textile ring spinning machine.

[0008] OBJECT OF THE INVENTION

[0009] The main object of the present invention is to provide an improved automatic piecing unit for a textile ring spinning machine.

[0010] Another object of the present invention is to provide an improved synchronization device between the automatic piecing unit and the ring rail of a ring spinning machine. SUMMARY

[0011] According to the present invention, a textile ring spinning machine is provided with an improved automatic piecing unit. The textile ring spinning machine is provided with a ring rail. The ring rail of the ring spinning machine moves up and down during normal operation of the machine. The automatic piecing unit is provided with a plurality of piecing assisting modules, such as a yarn picking module, a yarn insertion module, a yarn suction module, a spindle braking module for braking the spindle of the ring spinning machine during the piecing operation, a yarn piecing module for piecing the broken yarn with the roving in the drafting unit. All the above mentioned modules are mounted in a plurality of housings and are provided with driving means connected with the control unit of the automatic piecing unit. The driving means provide up and down vertical movement of the piecing assisting modules provided on the tower device on the automatic piecing unit.

[0012] According to the present invention, an automatic piecing unit for a textile ring spinning machine having a ring rail is provided, comprising: a housing; a tower device; a plurality of piecing assisting modules mounted on the tower device; and a control unit; wherein an encoder is mounted in the automatic piecing unit. The encoder is preferably mounted in the housing which is movable on the tower device for determining the current position of the ring rail of the ring spinning machine. Further, a measuring device, preferably a scale, is mounted on the tower device of the automatic piecing unit by a suitable connecting bracket for determining the position of the ring rail. The measuring device comprises one of the following: a linear scale, a magnetic scale with coding and / or markings. The encoder is at least one of a magnetic encoder, an optical encoder, a capacitive encoder, a linear absolute encoder, a rotary absolute encoder, a linear incremental encoder, and a rotary incremental encoder. The encoder is configured to control the driving means of the piecing modules with respect to the up and down movement of the ring rail of the ring spinning machine.

[0013] According to an embodiment of the present invention, the automatic piecing unit is provided with an actuating unit to provide vertical linear movement for the housing, the actuating unit comprising one of a pneumatic actuator, an electric actuator, or an electromechanical actuator.

[0014] According to another embodiment of the present invention, a sensor is mounted on the housing to position the automatic piecing unit with the ring rail, the sensor comprising one of a proximity sensor, an inductive sensor, an optical sensor, a capacitive sensor, a magnetic sensor, an ultrasonic sensor, and the like.

[0015] Advantageously, the automatic winding unit of the ring spinning machine is provided with at least one absolute magnetic encoder. The absolute magnetic encoder is suitably mounted on the housing of the proximity sensor. The encoder is preferably mounted on the side of the housing and is connected with the control unit of the automatic winding unit. At least one measuring device (preferably a magnetic scale) is mounted on the tower device of the automatic winding unit. The magnetic scale is provided with magnetic codes or markings thereon. Based on the output signal of the absolute magnetic encoder relative to the markings on the magnetic scale, the control unit of the automatic winding unit determines the current position of the ring track of the ring spinning machine and controls the drive device of the winding module to move up and down in synchronization with the up and down movement of the ring track of the ring spinning machine.

[0016] During the entire winding process, the automatic winding unit of the present application is always positioned and the various winding auxiliary modules in the automatic winding unit are always accurately moved up and down in synchronization with the up and down movement of the ring track of the ring spinning machine and always ensures and maintains the positional accuracy. The absolute magnetic encoder according to the present application prevents damage due to improper synchronization between the housing of the automatic winding unit and the ring track of the ring spinning machine, thus significantly reducing the manufacturing and operating costs when the present application is implemented.

[0017] Other aspects and advantages of the present application will become apparent from the following description, taken in connection with the accompanying drawings, which show, by way of illustration, the principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A front view of the automatic winding unit for a ring spinning machine according to the present application is shown.

[0019] Figure 2 A schematic side view of the ring track positioning device of the automatic winding unit for a ring spinning machine according to the present application is shown.

[0020] Figure 3a And Figure 3b A perspective view of the tower device of the automatic winding unit according to the present application is shown, which has an encoder and a scale for determining the position of the ring track, respectively.

[0021] Figure 4 The working principle of the control unit according to the present application is shown. DETAILED DESCRIPTION

[0022] Reference Figure 1 And Figure 2, the textile ring spinning machine 1 is provided with an improved automatic threading unit 2. The textile ring spinning machine 1 is provided with a ring track 3. The ring track 3 of the ring spinning machine 1 moves up and down during normal operation of the machine. The automatic threading unit 2 is provided with a plurality of threading auxiliary modules, such as a yarn pick-up module, a yarn insertion module, a yarn suction module, a spindle brake module for braking the spindle of the ring spinning machine 1 during the threading operation, and a yarn threading module for threading the broken yarn with the roving in the drafting unit of the ring spinning machine 1. All the above mentioned modules are mounted in a plurality of housings and are provided with drive means 2a connected with a control unit 2b of the automatic threading unit 2, as shown in Figure 4 The drive means 2a provide the threading auxiliary modules provided on the tower device 4 of the automatic threading unit 2 with an up and down vertical movement.

[0023] The automatic threading unit 2 of the textile ring spinning machine 1 is provided with at least one sensor 5, preferably a proximity sensor. The sensor 5 is mounted in a housing 6. The housing 6 is connected with an actuating unit 7. The actuating unit 7 provides the housing 6 with a vertical linear movement. The actuating unit 7 according to the embodiment of the present invention is at least a pneumatic actuator or an electric actuator or an electromechanical actuator. The sensor 5 further comprises one of an inductive sensor, an optical sensor, a capacitive sensor, a magnetic sensor, an ultrasonic sensor, etc. The sensor 5 ensures proper positioning of the up and down movement of the automatic threading unit 2 relative to the ring track 3 of the ring spinning machine 1.

[0024] According to the present invention, as shown in Figure 3a and Figure 3b The automatic threading unit 2 of the textile ring spinning machine 1 is provided with at least one encoder 8 for detecting the up and down movement of the ring track of the ring spinning machine. The encoder 8 is at least one of a magnetic encoder, an optical encoder, a capacitive encoder, a linear absolute encoder, a rotary absolute encoder, a linear incremental encoder, a rotary incremental encoder, but is not limited thereto.

[0025] According to the embodiment of the present invention, the automatic threading unit 2 of the textile ring spinning machine 1 is provided with at least one absolute magnetic encoder 8. The absolute magnetic encoder 8 is suitably mounted on the housing 6 of the proximity sensor 5. The encoder 8 is preferably mounted on the side of the housing 6 and is connected with the control unit 2b of the automatic threading unit 2. At least one magnetic scale 9 is mounted on the tower device 4 of the automatic threading unit 2 through a suitable connecting bracket 10. The magnetic scale 9 is provided with magnetic encoding or markings thereon. Based on the output signal of the absolute magnetic encoder 8 relative to the markings on the magnetic scale 9, the control unit 2b of the automatic threading unit 2 determines the current position of the ring track 3 of the ring spinning machine 1 and controls the drive means 2a of the threading modules to move up and down in synchronization with the up and down movement of the ring track 3 of the ring spinning machine 1.

[0026] Throughout the threading process, the automatic threading unit 2 of the present application is always positioned, and the various threading auxiliary modules in the automatic threading unit 2 are always precisely moved up and down in synchronization with the up and down movement of the ring track 3 of the ring spinning machine 1, and the positional accuracy is always ensured and maintained. The absolute magnetic encoder 8 according to the present application prevents damage due to improper synchronization between the housing of the automatic threading unit 2 and the ring track 3 of the textile ring spinning machine 1, and therefore, when the present application is implemented, the manufacturing and operating costs are significantly reduced.

[0027] In view of the present disclosure describing the present application, all changes, modifications and variations within the equivalent meaning and range are considered to be within the scope and spirit of the present application.

Claims

1. An automatic wiring unit (2) for a textile ring spinning machine (1) having a circular track (3), the automatic wiring unit (2) comprising: Housing (6); tower assembly (4); multiple wiring auxiliary modules mounted on the tower assembly (4); and control unit (2b); An encoder (8) is provided in the automatic wiring unit (2), and a measuring device (9) is installed on the tower device (4) of the automatic wiring unit (2) to determine the position of the annular track (3) of the ring spinning machine (1).

2. The automatic wiring unit according to claim 1, wherein, The encoder (8) is installed in the housing (6) which is movable on the tower device (4) for determining the position of the annular track (3) of the ring spinning machine (1).

3. The automatic wiring unit according to claim 1, wherein, The measuring device (9) is preferably a ruler, which is mounted on the tower device (4) of the automatic wiring unit (2) via a suitable connecting bracket (10) to determine the position of the annular track (3).

4. The automatic wiring unit according to claim 3, wherein, The measuring device (9) includes one of the following: a linear scale, a magnetic scale with coding or marking.

5. The automatic wiring unit (2) according to claim 1, wherein, The encoder (8) is at least one of a magnetic encoder, an optical encoder, a capacitive encoder, a linear absolute encoder, a rotary absolute encoder, a linear incremental encoder, and a rotary incremental encoder.

6. The automatic wiring unit (2) according to claim 1, wherein, The encoder (8) is configured to provide an output signal relative to the measuring device (9) for determining the position of the annular track (3) of the ring spinning machine (1).

7. The automatic wiring unit (2) according to claim 6, wherein, The control unit (2b) is configured to control the drive device (2a) of the wiring module based on the up-and-down movement of the annular track (3) of the ring spinning machine (1) relative to the output signal from the encoder (8).

8. The automatic wiring unit (2) according to claim 1, wherein, The actuation unit (7) provides vertical linear motion to the housing (6), and the actuation unit (7) includes one of a pneumatic actuator, an electric actuator, or an electromechanical actuator.

9. The automatic wiring unit (2) according to claim 1, wherein, The sensor (5) is mounted on the housing (6) to position the automatic wiring unit (2) and the ring track (3), and the sensor (5) includes one of the following: proximity sensor, inductive sensor, optical sensor, capacitive sensor, magnetic sensor, ultrasonic sensor, etc.

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