DESC:4. Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority from the Provisional Application No. 201741013137 filed on 12th Apr 2017, the full disclosure of which is hereby incorporated by reference herein.
FIELD OF THE INVENTION

[0002] The present invention relates to the method and arrangement in spinning industry more particularly for controlling the Pneumafil motor using the information received from the individual spindle monitoring system which results in the saving of the energy.
BACKGROUND OF THE INVENTION

[0003] Ring frames are meant for producing yarns. Roving material is passed through the drafting system of Ring frame and the drafted material is twisted by means of spindle mechanism and the yarn is wound in a textile package. During yarn manufacturing, the yarn will tend to break due to various reasons like weak place in yarn, abnormal tension in winding zones, fault in yarn etc. Even when a yarn breaks, the drafted material will continuously come out of the drafting system of Ring frame and the drafted material is sucked by the suction tubes positioned below the each delivery point of drafting system. Such drafted material is collected as waste centrally and this waste is called as Pneumafil waste.

[0004] The central collection of Pneumafil waste due to such breaks at various spindle positions is done by means of a Pneumafil motor. The modern Ring frames have Pneumafil motor whose speed is controlled by inverter. The Pneumafil motor creates vacuum in the central duct which enables the suction tube to suck the drafted material at yarn break positions.

[0005] Suction pressure requirement varies according to number of breaks and even the count of the yarn. If breaks are more, more suction pressure is needed and vice versa. Similarly, for coarser counts where the linear density of the yarn is more, more suction is needed.

[0006] But, in modern Ring frames there is no provision to operate the Pneumafil suction motor speed based on the end breaks of the yarn.

[0007] Individual spindle monitoring systems plays a major role in increasing productivity and improving quality in Ring frames. Individual spindle monitoring systems monitors the status of each and every spindle of the Ring frame.

[0008] The present invention relates to a method and an arrangement which integrates the information like breaks of the yarn from the individual spindle monitoring system with the Pneumafil motor speed. The speed of the Pneumafil motor is varied and controlled automatically by means of the information received from Individual spindle monitoring system.

[0009] Usually, in Ring frames, even when the number of breaks are high or low, the Pneumafil suction motor runs at constant speed for suction of drafted material from the spindles where ends are broken. Generally, very less suction is required when the breaks are less and vice versa. In such case, the speed of the Pneumafil suction motor can be operated at a speed proportional to the number of breaks in Ring frame. This saves the energy required for running the Pneumafil suction motor significantly. The present invention provides the advantage of reducing the energy required for Pneumafil motor suction.

OBJECTS OF THE INVENTION

[0010] The main object of the present invention is to provide a method and an arrangement which controls the speed of the Pneumafil suction motor based on the break information about the yarn received from the individual spindle monitoring system thereby possibility of energy savings is achieved.

SUMMARY OF THE INVENTION

[0011] Accordingly, the present invention provides a method for controlling the speed of the pneumafil suction motor (5) in a spinning machine comprises varying the speed of the inverter (4) of the pneumafil suction motor (5) by the control system (3) based on the number of breaks information of the yarn received from the sensors (1) of the individual spindle monitoring system wherein the control system (3) is configurable to set different level of speeds of inverter (4) based on the information received from the sensors (1).

[0012] The present invention also discloses the arrangement for controlling the speed of the pneumafil suction motor (5) comprises sensors(1) of individual spindle monitoring system, machine station (2), inverter (4), pneumafil suction motor (5), suction duct (6) characterized by wherein the machine station (2) is connected to a control system (3) which gets the information of speed limits and the number of breaks of the yarn either from machine station directly or from a computer (8) through coordinator (7) to the machine station (2) for controlling the speed of the inverter(4) of the pneumafil suction motor(5).

BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention is described in the detailed description and not by way of limitation, in the figures of the accompanying drawings, and in which

Figure 1 shows the arrangement and interconnectivity between the individual spindle sensors of Ring frame, machine station, control system and the inverter of Pneumafil suction motor.

DETAILED DESCRIPTION OF THE INVENTION

[0014] For the better understanding of the object, technical solution and advantage of the present invention, the present invention will be further explained in detail with respect to embodiments and accompanying drawing below. It should be understood that the specific embodiments described herein only be used for explaining the present invention but not used to limit the present invention.

[0015] The present invention relates to the method and arrangement for controlling the speed of the Pneumafil suction motor based on the break information of the yarn received from the individual spindle sensors of a Ring frame.

[0016] Accordingly, the method for controlling the speed of the pneumafil suction motor (5) in a spinning machine comprises varying the speed of the inverter (4) of the pneumafil suction motor (5) by the control system (3) based on the number of breaks information of the yarn received from the sensors (1) of the individual spindle monitoring system wherein the control system (3) is configurable to set different level of speeds of inverter (4) based on the information received from the sensors (1).

[0017] The present invention also discloses the arrangement for controlling the speed of the pneumafil suction motor (5) comprises sensors (1) of individual spindle monitoring system, machine station (2), inverter (4), pneumafil suction motor (5), suction duct (6) characterized by wherein the machine station (2) is connected to a control system (3) which gets the information of speed limits and the number of breaks of the yarn either from machine station directly or from a computer (8) through coordinator(7) to the machine station (2) for controlling the speed of the inverter(4) of the pneumafil suction motor(5).

[0018] In an embodiment of the present invention, the breakage detail of the yarn from the individual spindle monitoring system is integrated to the Pneumafil suction motor speed control. The data from individual spindle monitoring system is usually collected to a machine station. From there the data will be taken to server for further processing. In the present invention, a control system is connected from the machine station. This control system receives the breaks details from the machine station and or from the computer of the individual spindle monitoring system. Based on the number of breaks, the control system changes the speed of the inverter which is connected to the Pneumafil suction motor. The number of breaks and speed configuration is done from the computer and or any device connected to the Spindle monitoring system. This configuration data is taken from the computer and or any device to the control system.

[0019] In yet another embodiment, the speed selection and number of breaks setting can be done in the control system itself with a keypad interface. The speed selection for the number of breaks is stored in the control system. Based on the existing number of breaks detail received from the individual spindle monitoring system, the control system controls the speed of the inverter which in turn controls the speed of the Pneumafil suction motor.

[0020] Fig 1 represents the configuration of the invention. The sensors (1) of individual spindle monitoring system senses the yarn breaks continuously. The number of yarn broken is transferred to the machine station (2). The breaks information is transferred from the machine station (2) to the control system (3) further. The control system gets the speed limits and number of breaks to control and operate the Pneumafil suction motor (5) either directly from the machine station itself or from the computer (8) and this data is transferred to the machine station (2) through coordinator (7). Data transmission from coordinator (7) to machine station (2) can be either wired or wireless. Data transmission from computer to coordinator (7) can be either wired or wireless. Data transmission from machine station (2) to control system (3) can be either wired or wireless.

[0021] Based on the number of breaks and speed limits set in the control system (3), it controls the inverter (4) which in turn controls the speed of the Pneumafil suction motor (5). The control system can be an external system or it can be internal and forms a part of the individual spindle monitoring system. The Pneumafil suction motor (5) is further connected to the suction duct (6) which is fitted on both sides of the Ring frame and it usually responsible for sucking the drafted material in the spindles where ends are broken. Thus, based on the end breaks and thereby the speed changes done in the Pneumafil suction motor (5), the suction pressure exerted in the suction duct (6) varies. This saves a huge energy when compared to constant Pneumafil suction motor speed without such control as explained in this invention.
,CLAIMS:We Claim:
1. A method for controlling the speed of the pneumafil suction motor (5) in a spinning machine comprises varying the speed of the inverter (4) of the pneumafil suction motor (5) by the control system (3) based on the number of breaks information of the yarn received from the sensors (1) of the individual spindle monitoring system wherein the control system (3) is configurable to set different level of speeds of inverter (4) based on the information received from the sensors (1).
2. An arrangement (fig 1) for controlling the speed of the pneumafil suction motor (5) comprises sensors (1) of individual spindle monitoring system, machine station (2), inverter (4), pneumafil suction motor (5), suction duct (6) characterized by wherein the machine station (2) is connected to a control system (3) which gets the information of speed limits and the number of breaks of the yarn either from machine station directly or from a computer (8) through coordinator(7) to the machine station (2) for controlling the speed of the inverter (4) of the pneumafil suction motor(5).
3. The arrangement as claimed in claim 2 wherein the speed selection and number of breaks setting can be done in the control system (3) itself with a keypad interface.