Description:

TECHNICAL FIELD
The present disclosure relates to textile ring spinning machines in general, and more particularly, to an automatic piecing of broken yarn and a levering method thereof for rail measuring and monitoring rack in a ring spinning machine/device.

BACKGROUND
In textile ring spinning machines, yarn is produced from the fibers which are drafted and twisted and then wound on a cop or bobbin using different active parts. In a ring spinning machine, the yarns tend to break because of various reasons like low quality material, fast speed of machine, heat generated during the spinning, and the like reasons. The main job of the laborers involved in this process is to continuously monitor the spinning machine and check if there is an occurrence of the yarn breakage during the process. The workforce may also be responsible for finding the defective spindle occurrences that may include but not limited to yarn breakage. The broken yarns have to be pieced manually and the yarn spinning sequence has to be restarted then and thereafter yarn breakage in order to avoid wastage of yarn. The common and frequent problems of yarn breakage require continuous attention of the workforce and it is a major disadvantage in ring spinning machines.
However, as humans are involved, the process of monitoring and ensuring is not effective and involves substantial delay in detection of the above defects, and even if the defect is detected, attending such defects is a time-consuming process. Further, if the defect occurs at multiple points in the machine, it is very difficult to attend the same by a single laborer/person. In the present scenario, one person is handling the multiple ring spinning machine. Hence, a plurality of laborers has to be hired and accordingly the initial cost of the process is increased.
Furthermore, the human interventions tend to be unreliable and ineffective. In textile application, the skilled labors have to arrange the piecing operation for each end every breakage of the yarn during running of the machine which is laborious, consumes more time and production loss. It is very difficult to get the required number of skilled labors during peak seasons. In order to avoid this extreme shortage of time and hard labor results into increasing cost labor steeply.
With advancement of technology, automatic piecing devices are provided as an alternative towards the conventional techniques of manual piecing in ring spinning machine. Such automatic piecing devices/equipment/ apparatus have a multi axis screw rod system which has an inbuilt drive and a pivoted levering robotic arm movement with tensioner levering mechanism in a piecing assembly movable along the length of the ring spinning machine. At a broken yarn spindle location, such automatic piecing unit are placed based on the signal for piecing process/operation and return to their home position or it is continuously running on the railing to the entire length of the ring spinning machine after completion of the piecing process.
Reference is being made to some of the prior arts listed below:
IN202041021597 discloses an automatic yarn piecing apparatus (9) of a textile ring spinning machine (1) and a method of piecing the broken yarns to drafted fiber strands. The yarn piecing apparatus (9) comprises a lifting unit for lifting the broken yarn from the cop (8), a suction unit (10) adapted to accommodate the broken yarn lifted by the lifting unit, and a piecing unit (11) configured to join a tail end (15) of the broken yarn to a fiber strand drafted by a drafting unit (4). The piecing unit (11) comprises a positioning device (12) adapted to perform an over-piecing process to merge the tail end (15) of the broken yarn to the fiber strand. The positioning device (12) is provided with a yarn joining device (19) configured to move in horizontal and traverse directions with respect to the drafting unit (4) to perform over-piecing.
CN 102560770 B discloses automatic detection of yarn breakage, automatic piecing method and apparatus. In the document CN102560770 B discloses an automatic method of a kind of spun yarn detects broken end, automatic joint characterized in that: at ring rail side, set up guide rail and travelling car, on travelling car, carry the bobbin as lead-in wire, controller is controlled travelling car reciprocating motion on guide rail, inductance coil probe detects broken end, and one section of lead-in wire of mechanical arm utilization intercepting is connected empty bar with spool. This spun yarn detects broken end, automatic joint method automatically. Further, the yarn breakage automatic detection and automatic piecing method, the method involving the ring rail flanking additional rail and dolly, moving the trolley carrying wire spool is used, the controller controls the moving carriage reciprocates on the guide rail, inductance coil probe detection off head, robot will use the intercepted virtual strip length of wire and yarn pipe.
EP0421157B1 discloses a ring spinning machine having means for spinning a yarn from a roving supplied by a fly frame and for winding said yarn onto a cop, further disclosing a travelling service carriage which carries an auxiliary bobbin with an auxiliary yarn, from which, in the event of rectification of a yarn break, a piece of yarn is applied to the cop and pieced to the roving. The service carriage is provided with means for monitoring the success of an attempt to rectify a yarn break. The means are connected to a control unit with controls means on the service carriage for removing from the cop a piece of auxiliary yarn used in a failed attempt, before a further attempt is made to rectify the yarn break.
However, these documents do not disclose the automatic piecing system with rack and pinion mechanism linked with encoder, yarn tensioner levering, linear, angular, reciprocating and longitudinal directional moving controlling levering mechanism with rotary blow tube mechanism etc., controlled by electromechanical, pneumatically integrated ring rail monitoring and control movement through rack and pinion mechanism in order to maintain the accuracy of measuring the ring rail movement and monitoring during the piecing process and avoid the damages of the piecing units during running.
Therefore, there is a need for an automatic yarn piecing assembly with ring rail measuring and monitoring system, multi axis movement levering system with multi axis automatic piecing unit which enables to piece the broken yarn in the spinning machine in order to maintain the constant production efficiency of the ring frame.

SUMMARY OF THE INVENTION
The following disclosure presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.
An object of the present invention is to address and remove all the above limitations.
An object of the present invention is to address an automatic yarn piecing apparatus with multi directional movement mechanism for piecing broken yarn ends in textile ring spinning machines. The rotating spring tensioner unit is provided and configured for movement of multi directions with respect to the drafting location to perform over-piecing.
Yet another object of the present invention is to address yarn end picking and levering mechanism using pneumatic, electromechanical operating system. The electronic device of the auto piecing unit is logically programmed to suit/integrate/control the function of overhead travelling cleaner based on the auto piecing unit direction of traverse movement and function in the ring spinning machine during piecing process/operation.
A first aspect of the present invention is to provide an automatic yarn piecing and levering method for ring rail measuring and monitoring rack, the method comprising: identifying yarn breakage from a ring spinning device using at least one sensor during a yarn piecing process, moving in front of an identified yarn breakage spindle location of the ring spinning device, blowing compressed air at a bottom (upstream) of spindle to loosen a broken yarn from a cop using multi orifice blow, sucking the broken yarn from the cop, inserting the yarn into a traveler, ABC ring and lappet using yarn pushing rod, holding a pulling slitting device of the yarn till the completion of joining of the ring spinning device, and automatically piecing the ring spinning device into the original position for the yarn piecing and tracking process wherein the pulling slitting device maintain the dimensional parameters A= 12° to 40° and B = 1mm to 4mm, yarn pushing rod and grooving device maintains the dimensional parameters A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm.
A second aspect of the present invention is to provide an automatic yarn piecing assembly for ring rail measuring and monitoring rack, the assembly comprising at least one multi-axis screw rod assembly comprising at least one a screw rod, a guide roller wherein a near end of two guide rails provided with angle plates to push the rollers, a rotary cylinder /actuator to provide control and follow multi-direction movement as movement of up and down direction of the ring rail to maintain accuracy, a servo motors wherein the servo operated vacuum nozzle moves from its initial position towards the ring spinning device to carry the tail broken yarn forward up to the drafting rollers, a sensor wherein an end detecting sensors installed at both ends of guide rail ,a guide way, a yarn tensioner wherein the said tensioner is provided to stretch the yarn during the piecing process by the servo operated vacuum nozzle, a suction unit comprising a suction tube connected with mechanical block with spring wherein the movement used for piecing together a held yarn and loose end of a yarn to maintain suction effect continuously during the piecing process, a timing pulley, a yarn guide rod, a rotary blow tube; a orifice blow tube and a bearing block. The assembly has the separate drive motor and its guide rollers.
A third aspect of the present invention is to provide pinion mechanism assembly comprising at least one clamp plate equipped with rack and pinion , rack mounting plate, proximity sensor provided to monitor and control the displacement of rail lowering and upper movement with measuring the displacement of the movement, encoder wherein said encoder provides control and follow the direction movement of up and down direction of the ring rail to maintain the accuracy and LM guide placed on the said plate to travel up and down movement based on the ring rail measurement and monitoring in the ring spinning device.
A fourth aspect of the present invention is to provide integrated unit assembly for accelerating levering mechanism comprising at least one pick up yarn lever, yarn pushing lever, rotary guide plate, yarn tensioning lever moving by pneumatic, mechanical and electrically on the block during the doffing process wherein the yarn tensioner holds a yarn for threading the said yarn into traveler and ABC ring through yarn guide rod and yarn holding tube.
Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above and other aspects, features and advantages of the embodiments of the present disclosure will be more apparent in the following description taken in conjunction with the accompanying drawings, in which:
Figure 1 illustrates an overall assembly of a ring rail measuring and monitoring, travelling rack and pinion mechanism of an automatic yarn piecing assembly, in accordance with the present invention.
Figure 2 illustrates an overall assembly of the yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism, in accordance with the present invention.
Figure 3 illustrates the internal tensioner grooving device for angular movement levering arrangement, in accordance with the present invention.
Figure 4 illustrates the yarn tracking and pushing slitting device, in accordance with the present invention.
Figure 5 illustrates the internal assembly view of the yarn tracking and picking slitting device and clamping assembly system, in accordance with the present invention.
Figure 6 illustrates the assembly view of the reciprocating yarn picking and joining lever with grooving device for catching and joining the tail end yarn, in accordance with the present invention.
Figure 7 illustrates the positions view of the grooving device of yarn picking lever to track the yarn with tension, in accordance with the present invention.
Figure 8 illustrates an automatic yarn piecing and levering method for ring rail measuring and monitoring rack, in accordance with the present invention.
Figure 9 illustrates an automatic yarn breakage detection and piecing assembly involving sub-assembly embodiments in accordance with the present invention.
Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may not have been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding, but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.
It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, a reference to “a component surface” includes a reference to one or more of such surfaces.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments belong. Further, the meaning of terms or words used in the specification and the claims should not be limited to the literal or commonly employed sense but should be construed in accordance with the spirit of the disclosure to most properly describe the present disclosure.
The terminology used herein is for the purpose of describing particular various embodiments only and is not intended to be limiting of various embodiments. As used herein it is understood that the terms “comprises” and/or “comprising” used herein specify the presence of stated features, integers, steps, operations, members, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, components, and/or groups thereof. Also, expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.
The present invention will now be described more fully with reference to the accompanying drawings, in which various embodiments of the present disclosure are shown. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the various embodiments set forth herein, rather, these various embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the present disclosure. Furthermore, a detailed description of other parts will not be provided not to make the present disclosure unclear. Like reference numerals in the drawings refer to like elements throughout.
Embodiments disclose an automatic piecing of broken yarn and levering method for ring rail measuring and monitoring rack in a ring spinning machine thereby detecting the breakage of yarn during piecing process. The present invention involves auto piecing system with a rack, a pneumatically integrated ring rail monitoring and controlled movement during piecing process to avoid damages of the piecing assembly during running stage. Further, the multi axis movement levering system with multi axis automatic piecing assembly of the present invention enables to piece the broken yarn in the spinning machine to maintain the constant production efficiency of the ring frame spinning machines.
In a non-limiting embodiment, the present invention provides an automatic yarn piecing and levering method (800) for a ring rail measuring and monitoring rack, the method comprising: identifying (802), a yarn breakage spindle from a ring spinning device (RSD), using at least one sensor connected to an auto piecing unit during a yarn piecing process. The sensor may have connected to the auto piecing unit inside or outside the surface that comes in contact with the ring spindle device (RSD). Next moving (804), the auto piecing unit, in front of an identified breakage yarn spindle location of the RSD. Next blowing (806), compressed air at a bottom (upstream) of yarn spindle to loosen a broken yarn from a cop/bobbin of the RSD, using multi-orifice blow configured with less than 15 degree angle into the auto piecing unit. Next sucking (808), the broken yarn from the cop of the RSD, using a vacuum tunnel unit connected with the sensor to the auto piecing unit. Next inserting (810), the yarn into a traveler, a ABC ring and a lappet, using a picking slitting device (10) adapted in front portion of a yarn lever/rod (11) of the auto piecing unit. Next holding (812), the inserted yarn, using a pulling slitting device connected to the auto piecing unit till the completion of joining of the RSD , and finally automatically moving (814), the auto piecing unit to its original position to continue the yarn piecing and tracking process of the RSD wherein the pulling slitting device maintain the dimensional parameters A= 12° to 40° and B = 1mm to 4mm, yarn pushing rod (11) and grooving device maintains the dimensional parameters A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm. The automatic yarn piecing assembly or unit/ apparatus/equipment has a ring rail measuring and monitoring rack and pinion mechanism controlled up and down moving system and it helps to catch the broken yarn from the wounded cop of the ring spinning machine. This mechanism performs to control, measure and monitor the movement of the ring rail displacement. The rotating spring tensioner unit is provided and configured to movement of multi directions with respect to the drafting location to perform over-piecing. The yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism is provided for the cop, in the auto piecing unit of the textile ring spinning machines using pneumatic, electro-mechanics operating system.
In a non-limiting embodiment, the present invention provides an automatic yarn tracking and picking slitting device (10) comprising: guiding the broken yarn using pushing slitting device provided in front portion of the lever and tension the yarn by angular movement wherein levering mechanism combined with pneumatic moves and picking the yarn by linear and longitudinal movement of the ring spinning device to hold yarn continuously, wherein picking slitting device provided in front portion of the rod (lever) maintained at angle A =25° to 65° and the B, C and D maintained at 1.5 mm to 3.5 mm, 1mm to 4 mm and 0.1 mm to 1.5 mm respectively.
In a non-limiting embodiment, the present invention is an assembly of reciprocating yarn picking and joining lever with grooving device comprising catching and joining the tail end yarn comprising tube holder (14), solid circular tube (15), yarn holder (16) a clamp (9) and end welded bush (4) assembly placed at the middle of the auto piecing device and connected with the air cylinder, actuating cylinder by braking lever arresting the spindle device rotation to start the piecing process of the broken yarn to operate a yarn tensioner wherein actuating cylinder connected to the vacuum tunnel unit and inserting the yarn into drafting rollers configured on top arm electrically, wherein the dimensional parameter of the grooving area maintained at angle A= 90° to 130° and B=0.1 mm to 1 mm.
In a non-limiting embodiment, the present invention further comprising the yarn tensioner stretches the yarn in the piecing process by servo operated vacuum nozzle wherein the servo operated vacuum nozzle moves from initial position towards the ring spinning device carrying the tail broken yarn forward to a drafting rollers. The vacuum tunnel is provided with the actuating cylinder, poly carbonate tube connected with sensor to suck the tail end of the broken yarn and stop the suction effect after sensing the yarn by the sensor in order to avoid the cutting of the excess yarn. The tail end of the broken yarn is catching by the yarn nozzle by applying a vacuum and indexing movement.
Further, in a non-limiting embodiment, the tail broken yarn join with the drafting fiber strand between the drafting rollers and completing piecing process of the cop for identified spindles of the ring spinning device. The electronic device of the auto piecing assembly/unit is logically programmed to suit or integrate or control the function of overhead travelling cleaner based on the auto piecing unit direction of traverse movement and function in the ring spinning machine during piecing process/operation.
In another non-limiting embodiment, the present invention yarn tensioner stretches the yarn during piecing process by the servo operated vacuum nozzle to provide control and follow the multi-directional movement of the ring rail to maintain accuracy. The servo motor is used to move the vacuum nozzle in horizontal, vertical and angular direction, which is parallel to drafting rollers to the entire of the piecing process. Since the vacuum nozzle is hinged at servo motor with tensional spring, the inclined angle extended position based on the calculated value of the program and it moves in traverse or radial direction, which is perpendicular to drafting rollers. The special sensor is provided to monitor and control the displacement of the rail lowering and upper movement and measuring the displacement of the movement.
In a non-limiting embodiment of the present invention, the essence lies in an automatic yarn piecing assembly (900) for ring rail measuring and monitoring rack(200), the assembly (900) comprising at least one multi axis screw rod auto piecing unit or assembly comprising at least one guide rollers wherein a near end of two guide rails provided with angle plates to push the rollers, a rotary cylinder /actuator to provide control and follow movement of up and down direction of the ring rail to maintain accuracy, a servo motors wherein the servo operated vacuum nozzle moves from its initial position towards the ring spinning device to carry the tail broken yarn forward up to the drafting rollers, a sensor wherein an end detecting sensors installed at both ends of guide rail, guide ways, a yarn tensioner wherein the said tensioner is provided to stretch the yarn during the piecing process by the servo operated vacuum nozzle, a suction unit comprising a suction tube connected with mechanical block with spring wherein the movement used for piecing together a held yarn and loose end of a yarn to maintain suction effect continuously during the piecing process. In non-limiting embodiments, the body of the piecing assembly (900-906) comprising a sub assembly such as bottom screw rod assembly, middle suction unit assembly, side screw rod multi axis assembly, top motors assembly, yarn pulling unit assembly, breaking unit assembly, encoder assembly, blowing unit assembly, rotary blow pipe assembly and apparatus. The end detecting sensors and safety sensors is permanently installed at both ends of the guide rail. The near end of the two guide rails provided with angle plates to push the rollers. The automatic yarn piecing assembly (906) has the separate drive motor and its guide rollers. Further, the lappet tilting plate (32) with 2 to 20 degree angle is provided to tilt the lappet during the piecing process of the machine .The non-limiting sub-assembly embodiments stated above comprises of different sub-components working in consonance with each other and is providing a complete automatic yarn piecing assembly (904) for ring rail measuring and monitoring rack (200).The automatic yarn piecing assembly (904) comprising Spindle locking plate (38) with less than 2 slot for locking is provided in front portion of the piecing assembly guiding the spindle of the entire said assembly to hold the piecing machine and helps to yarn piecing process.
In a non-limiting embodiment, the present automatic yarn piecing assembly (900) for ring rail measuring and monitoring rack (200), the assembly comprising at least one pinion mechanism assembly comprising at least one proximity sensor (6) provided to monitor and control the displacement of rail lowering and upper movement with measuring the displacement of the movement, encoder (2) wherein said encoder provides control and follow the movement of up and down direction of the ring rail to maintain the accuracy. Further it comprises LM guide (3) placed on the said plate to travel up and down movement based on the ring rail measurement and monitoring in the ring spinning device.
In a non-limiting embodiment, the present invention of an automatic yarn piecing assembly (900) for ring rail measuring and monitoring rack (200) for ring spinning device or machine comprising at least one integrated unit assembly for accelerating levering mechanism comprising at least one yarn tensioning lever (13) moving by pneumatic on the block during the doffing process wherein the yarn tensioner holds a yarn for threading the said yarn into traveler and ABC ring through yarn guide rod and yarn holding tube. Further, the yarn holding tube means comprise the suction and connected with mechanical block with spring, whose movement are used for piecing together a held yarn and a loose end of a yarn thus being part of the yarn piecing into the yarn and the suction effect maintain continuously until the piecing process completed. The yarn threading comprises the first yarn threading; the yarn piecing comprise both first and second yarn threading. For the entire application, the suction used synonymously with a suction tube and the drafted material provided by a ring spinning machine, wherein the drafted material is typically provided by delivery rollers of the spinning machine.
In a non-limiting embodiment, the automatic yarn piecing assembly (900) wherein the said assembly involves sub assembly involving a bottom screw rod assembly, middle suction unit assembly, side screw rod multi axis assembly, top motors assembly, yarn pulling unit assembly, breaking unit assembly, encoder assembly, blowing unit assembly, rotary blow pipe assembly.
In a non-limiting embodiment, the automatic yarn piecing assembly (900) for ring rail measuring and monitoring rack (200) in a ring spinning device wherein yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism with sliding device controlled by plurality of pneumatic, electro mechanics and electrical devices.
In another non-limiting embodiment, the automatic yarn piecing inner assembly (900) for ring rail measuring and monitoring rack for ring spinning device /machine comprising yarn tensioner lever/rod (13). Further, the yarn tracking and pushing slitting device provided in front portion of the rod/lever guiding the broken yarn and tension the yarn by angular movement of the entire said assembly to maintain the tension the yarn and helps to yarn pushing lever/rod to insert the yarn into ring.
In yet another non-limiting embodiment, the present invention comprising the pulling slitting device which maintains the dimensional parameters A= 12° to 40° and B = 1mm to 4mm, yarn pushing rod (11) and grooving device maintains the dimensional parameters A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm. Further, the picking slitting device is maintained at angle A =25° to 65° and the B, C and D maintained at 1.5 mm to 3.5 mm, 1mm to 4 mm and 0.1 mm to 1.5mm respectively.
In yet another non-limiting embodiment, the automatic yarn piecing assembly (906) for ring rail measuring and monitoring rack for ring spinning device comprising the Spindle locking plate (38) with less than 2 slot for locking is provided in front portion of the piecing assembly guiding the spindle of the entire said assembly to hold the piecing machine and helps to yarn piecing process.
In yet another non-limiting embodiment, the automatic yarn piecing assembly (904) for ring rail measuring and monitoring rack for ring spinning device having the lappet tilting plate (32) with 2 to 20 degree angle is provided to tilt the lappet during the piecing process of the machine.Referring to the brief description of the drawings stated above. Figure 1 illustrates the overall assembly (900) of the ring rail measuring and monitoring (200), travelling rack and pinion mechanism in accordance with the present invention.
In a non-limiting embodiment, Figure 1 hereafter referred as Fig.1 is discussed in detailed. The automatic piecing unit assembly (900) comprises the ring rail measuring and monitoring (200), travelling rack and pinion mechanism assembly with clamp plate (1), equipped with rack (7) and pinion (8), rack mounting plate (5), Proximity sensor (6), encoder (2), LM guide (3) which place on the plate and travel to up and down movement based on the ring rail measurement and monitoring in the ring spinning machine. Further based on the present invention, the rack and pinion encoding system (Fig. 1) is provide to control and follow the movement of up and down direction of the ring rail in order to maintain the accuracy. Moreover, the rotary cylinder/actuators is providing to control and follow the movement of up and down direction of the ring rail in order to maintain the accuracy. The yarn tensioner is to stretch the yarn during the piecing process by the servo operated vacuum nozzle.
In a non-limiting embodiment, the Figure 2 illustrates the overall assembly (300) of the yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism in accordance with the present invention. Referring Figure 2 as Fig. 2 it discloses the integrated unit overall assembly (300) of the yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism with sliding device controlled by the plurality of pneumatic, electro-mechanics and electrical devices. It comprises the pickup yarn lever /rod (10), yarn pushing lever/rod, rotary guide plate (12), and yarn tensioning lever/rod (13) moving by pneumatic, mechanical and electrically on the block during the doffing process. After completing the joining/piecing process, this assembly is automatically moves into the original position. The yarn tensioner means holding a yarn allow for threading the said yarn into the traveler and ABC ring through the yarn guide rod and yarn holding tube. The yarn holding tube means comprises the suction and connected with mechanical block with spring, whose movement used for piecing together a held yarn and a loose end of a yarn thus being part of the yarn piecing into the yarn and the suction effect maintain continuously until the piecing process completed. The yarn threading comprises the first yarn threading; the yarn piecing further comprises both first and second yarn threading. For the entire method/application, the suction used synonymously with a suction tube and the drafted material provided by a ring spinning machine, wherein the drafted material is typically provided by delivery rollers of the spinning machine.
In a non-limiting embodiment, the Figure 3 illustrates the internal tensioner grooving device (400) for angular movement levering arrangement in accordance with the present invention. Further, Figure 4 illustrates the yarn tracking and pushing slitting device (402) in accordance with the present invention. Referring to Figure 3 as Fig. 3 and Figure 4 as Fig.4, during running of the piecing process of the auto piecing unit or assembly (900), the yarn tensioner lever/rod (13) and its yarn tracking and pushing slitting device (Fig. 3) which is provided in front portion of the rod/lever is guiding the broken yarn and tension the yarn by angular movement of the entire assembly to maintain the tension the yarn and it helps to yarn pushing lever/rod (11) to insert the yarn into the ring traveler. When there is an indication and identifying the yarn breakage through sensor, the auto piecing unit comes in front of the spindle location and it includes multi orifice blow tube for blow the compressed air at the bottom (upstream) of the spindle to loosen the broken yarn from the cop / bobbin, a vacuum tunnel unit for suck the broken yarn from the cop, inserting the yarn into a traveler, ABC ring and lappet, and a yarn tracking and pulling slitting device holding the yarn until the completion of the joining of the ring spinning machine. The pulling device (Fig 3) is maintaining the dimensional parameters are A= 12° to 40° and B = 1mm to 4mm. The yarn pushing rod and its grooving device is maintaining the dimensional parameters are A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm.
In a non-limiting embodiment, the Figure 5 illustrates the internal assembly view of the yarn tracking and picking slitting device and clamping assembly system in accordance with the present invention. Referring Figure 5 as Fig. 5, the internal assembly (500) of the yarn tracking and picking slitting device (10) and its front portion of the slitting (Fig.5) is levering mechanism moves combined with pneumatic, mechanical and electronically. During running of the piecing process of the auto piecing unit, the yarn tracking and picking slitting device which is provided in front portion of the rod/lever is guiding the broken yarn and pick the yarn by linear and longitudinal movement of the entire assembly to hold the yarn continuously and it helps to insert the yarn into the ring traveler, ABC ring and lappet device in one/two stroke of operation. The picking slitting device is maintained the angle A 25° to 65° and the B, C and D are maintaining 1.5 mm to 3.5 mm, 1mm to 4 mm and 0.1 mm to 1.5 mm respectively.
In a non-limiting embodiment, the Figure 6 illustrates the assembly view (600) of the reciprocating yarn picking and joining lever with grooving device for catching and joining the tail end yarn in accordance with the present invention. Further, the Figure 7 illustrates the positions view (700) of the grooving device of yarn picking lever to track the yarn with tension in accordance with the present invention. Referring Figure 6 as Fig.6 and Figure 7 as Fig.7 herewith in the present invention discloses assembly of the reciprocating yarn picking and joining lever (Fig.6) with grooving device (Fig.7) for catching and joining the tail end yarn it comprises tube holder (14), solid circular tube (15), yarn holder (16) and end welded bush (4) assembly is placed at the middle of the auto piecing device and connected with the air cylinder. The braking lever arrest the spindle rotation by actuating the cylinder in order to start the piecing process of the broken yarn. This assembly is operating simultaneously along with the pickup yarn device/rod using pneumatically, electrically to insert the yarn into the drafting rollers which is placed in the top arm by reciprocating movement of the device. The dimensional parameter of the grooving area (Fig.7) is maintaining A= 90° to 130° and B=0.1 MM to 1 mm.
In a non-limiting embodiment, the Figure 8 illustrates an automatic yarn piecing and levering method (800) for ring rail measuring and monitoring rack in accordance with the present invention. Referring Figure 8 as Fig. 8 herewith discloses a method of an automatic piecing of broken yarn and levering for rail measuring and monitoring rack. The method involves a non-limiting steps as identifying (802), a yarn breakage spindle from a ring spinning device (RSD), using at least one sensor connected to an auto piecing unit during a yarn piecing process. Next moving (804), the auto piecing unit, in front of an identified breakage yarn spindle location of the RSD. Next blowing (806), compressed air at a bottom (upstream) of yarn spindle to loosen a broken yarn from a cop/bobbin of the RSD, using multi-orifice blow configured into the auto piecing unit. Next sucking (808), the broken yarn from the cop of the RSD, using a vacuum tunnel unit connected with the sensor to the auto piecing unit. Next inserting (810), the yarn into a traveler, a ABC ring and a lappet, using a picking slitting device (10) adapted in front portion of a yarn lever/rod (11) of the auto piecing unit. The lappet tilting plate (32) with 2 to 20 degree angle is provided to tilt the lappet during the piecing process of the machine. Next holding (812), the inserted yarn, using a pulling slitting device connected to the auto piecing unit till the completion of joining of the RSD, and finally automatically moving (814), the auto piecing unit to its original position to continue the yarn piecing and tracking process of the RSD.
In a non-limiting embodiment, the Figure 9 illustrates an automatic yarn piecing and levering assembly (900) involving sub-assembly embodiments in accordance with the present invention. The automatic yarn piecing assembly (900) comprising a sub assembly such as bottom screw rod assembly, middle suction unit assembly, side screw rod multi axis assembly, top motors assembly, yarn pulling unit assembly, breaking unit assembly, encoder assembly, blowing unit assembly, rotary blow pipe assembly and apparatus chamber. Referring to Figures 9A-9D, the assembly (900) function in consonance with different sub-assembly having a non-limiting embodiments and some are discussed herewith. All the figures referred here for Figure 9 is working in a system for the piecing assembly (900) including to measure ring rail and further monitoring the rack in a non-limiting embodiments. Figures 9A-9D illustrates cross-sectional view of automatic yarn piecing assembly comprising of chamber (21), Drive wheel (22), Non Drive wheel (23) are used to travel the piecing unit on the railing to the entire length of the Ring frame, Guide bearing (24) is guiding the piecing unit in order to avoid the shaking of the machine and guide for the parallel movement, HMI (25), Drive wheel timing pulley (26) is connected with drive motor to drive the entire assembly of the piecing machine. Welded structure (30) is maintaining the stability of the machine and the Suction tube (31) is attached with Lappet tilting Plate (32) and it is used to suck the yarn and the tilt the lappet as a simultaneous process. Linear actuator (33), Suction Nozzle (34), Encoder setup (35), is used for detecting and capture the yarn from the cops for piecing process. Spindle locking plate (38) with less than 2 slot is used to lock the piecing machine into the bottom portion of the spindle as a guiding action during the piecing process. Apart from the above it illustrates Ring traveler piecing setup (39), Yarn piecer in cut roller (40), Ring rail sensor (41), Traveler blowing tube (42), Encoder distance sensor (43), Linear pneumatic actuator (44), Piecing setup assembly (45), Pressure gauge (27), Status light (28), Panel end (29), Yarn detecting sensor (36), Bottom blowing plate (37),
The non-limiting sub-assembly embodiments stated above comprises of different sub-components working in consonance with each other and is providing a complete automatic yarn breakage detection and piecing assembly. Moreover, the drive wheel and non-drive wheel inbuilt in the system/assembly have a separate drive motors and its guide bearing rollers. The end detecting sensors and safety sensors is permanently installed at both ends of the guide rail. The near end of the two guide rails provided with angle plates to push the rollers. The drive wheel timing pulley, pressure gauge, panel for showing status by displaying status light and the welded structure to show the connectivity of the components in an assembly (900) is displayed for ease of understanding.
Further, in the non-limiting embodiments, the sub-assembly involves suction tube, suction nozzle in the suction unit assembly, lappet tilting plate of the lappet device, linear actuator, encoder setup in the encoder assembly unit. The assembly (900) further comprises sub-assembly unit involving yarn detecting sensor, ring rail sensor, encoder distance sensor under the sensor and encoder assembly unit, bottom blowing plate, spindle locking plate, ring traveler, linear pneumatic actuator and piecing setup assembly working in an automatic yarn breakage detection process and monitoring the rack for ring rail. In a non-limiting embodiment, the automatic yarn piecing assembly (904) comprising the lappet tilting plate (32) with 2 to 20-degree angle is provided to tilt the lappet during the piecing process of the machine. The non-limiting embodiments of the sub-assembly involves multiple sub-components in a system of the automatic yarn piecing and levering assembly (906) for measuring and monitoring process of ring rail and detecting the breakage of the yarn during the yarn piecing process without interrupting in between to stop the whole process after detecting breakage of yarn. In a non-limiting embodiment, the automatic yarn piecing assembly (906) for ring rail measuring and monitoring rack for ring spinning device involving the Spindle locking plate (38) with less than 2 slot for locking is provided in front portion of the piecing assembly guiding the spindle of the entire said assembly to hold the piecing machine and helps to yarn piecing process.
As used herein, yarn piecing process referred to the process of pairing two ends of yarn or the starting point in the spinning process where yarn and fibers come together. The ring spinner uses a special method to attach the loose thread head and the edge of the sliver to the protruding needle of the drawing roller.
As used herein, ring spinning referred to a continuous process, unlike mule spinning which uses an intermittent action. In ring spinning, the roving is first attenuated by using drawing rollers, then spun and wound around a rotating spindle which in its turn is contained within an independently rotating ring flyer.
As used herein, pneumatic electro-mechanics devices referred to perform a task using pneumatics which involved an aspect of physics and engineering that is concerned with using the energy in compressed gas to make something move or work. This pneumatic device needs to initiate, monitor, and stop the process which is electro-pneumatic devices came into existence. Electro-pneumatic systems integrate pneumatic and electrical technologies into one system where the signal/control medium is electrical and the working medium is compressed air.
As used herein, doffing process is referred to the process of replacing the filled ring bobbins with an empty cop/bobbin. When the ring bobbins get full of yarn, these bobbins need to replace with empty bobbins. This job gets performed manually. It done automatically also. When doffing is performed, the machine is stopped first then thread guides are hinged up. Now bobbins are removed from the spindles and empty bobbins are put on the spindles. The thread guides are lowered again and the machine is restarted.
Henceforth, the present invention proposes an efficient method to automatic detect yarn breakage and provide a yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism for the cop/bobbin in automatic piecing assembly/unit of the ring spinning device/machines.
The present invention offers multiple technical advantages out of which few have been enumerated below for ease of understanding:
• Provides an efficient automatic ring rail measuring and monitoring rack to pick the broken yarn of the textile ring spinning machines.
• An efficient automatic yarn piecing assembly unit with multi directional movement mechanism for piecing broken yarn ends in textile ring spinning machines.
• An automatic yarn piecing equipment/apparatus for ring rail measuring and monitoring rack with having pinion mechanism which helps to catch the broken yarn from the wounded cop/bobbin of the ring spinning device or machine.
• Performs controlling, measuring and monitoring of the movement of the ring rail displacement during the piecing process.
• Saves a lot of time by detecting the breakage in yarn without stopping the piecing process of the ring spinning machine/device and thus results into constant production efficiency of the ring frame.
• Provides an auto piecing system with rack and pinion mechanism linked with encoder, tensioner levering etc. which is controlled by electromechanical, pneumatically integrated ring rail monitoring to avoid the damages of piecing units during running stage.
• Provides end detecting sensors and safety sensors permanently installed at both ends of the guide rail. Near end of the two guide rails are provided with angle plates to push the rollers and the overall safety is maintained during the automatic yarn piecing process.
The foregoing description of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or forms disclosed, and other modifications and variations may be possible in light of the above teachings wherein those of skill in the art will recognize certain modifications, permutations, additions and sub combinations thereof.
, Claims:
1. An automatic yarn piecing and levering method (800) for a ring rail measuring and monitoring rack, the method comprising:
- identifying (802), a yarn breakage spindle from a ring spinning device (RSD), using at least one sensor connected to an auto piecing unit during a yarn piecing process;
- moving (804), the auto piecing unit, in front of an identified breakage yarn spindle location of the RSD;
- blowing (806), compressed air at a bottom (upstream) of yarn spindle to loosen a broken yarn from a cop/bobbin of the RSD, using a multi-orifice blow configured with less than 15 degree angle into the auto piecing unit;
- sucking (808), the broken yarn from the cop of the RSD, using a vacuum tunnel unit connected with the sensor to the auto piecing unit;
- inserting (810), the yarn into a traveler, a ABC ring and a lappet, using a picking slitting device (10) adapted in front portion of a yarn lever/rod (11) of the auto piecing unit;
- holding (812), the inserted yarn, using a pulling slitting device connected to the auto piecing unit till the completion of joining of the RSD; and
- automatically moving (814), the auto piecing unit to its original position to continue the yarn piecing and tracking process of the RSD.

2. The method (800) as claimed in claim 1, wherein pulling slitting device maintain the dimensional parameters A= 12° to 40° and B = 1mm to 4mm, yarn pushing rod (11) and grooving device maintains the dimensional parameters A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm.

3. The method (800) as claimed in claim 1, the automatic yarn tracking and the picking slitting device (10) comprising:
- guiding the broken yarn using pushing slitting device provided in front portion of the lever and tension the yarn by angular movement wherein the levering mechanism combined with pneumatic moves; and
- picking the yarn by linear and longitudinal movement of the ring spinning device to hold the yarn continuously,
wherein the picking slitting device provided in front portion of the rod (lever) maintained at angle A =25° to 65° and the B, C and D maintained at 1.5 mm to 3.5 mm, 1 mm to 4 mm and 0.1 mm to 1.5 mm respectively.

4. The method (800) as claimed in claim 2, an assembly of reciprocating yarn picking and joining lever with grooving device comprising:
- catching and joining the tail end yarn comprising a tube holder (14), a solid circular tube (15), a yarn holder (16), a clamp (9) and an end welded bush (4) assembly placed at the middle of the auto piecing device and connected with the air cylinder;
- actuating cylinder by braking lever arresting the spindle device rotation to start the piecing process of the broken yarn to operate a yarn tensioner wherein the actuating cylinder connected to the vacuum tunnel unit; and
- inserting the yarn into the drafting rollers configured on top arm of the grooving device electrically,
wherein the dimensional parameter of the grooving area maintained at angle A= 90° to 130° and B=0.1 mm to 1 mm.

5. The method (800) as claimed in claim 4, the yarn tensioner stretches the yarn in the piecing process by servo operated vacuum nozzle wherein servo operated vacuum nozzle moves from initial position towards the ring spinning device carrying the tail broken yarn forward to a drafting rollers.

6. The method (800) as claimed in claim 4 or claim 5, the tail broken yarn join with the drafting fiber strand between the drafting rollers and completing piecing process of the cop for the identified spindles of the ring spinning device.

7. The method (800) as claimed in claim 4-6, wherein the yarn tensioner stretches the yarn during piecing process by the servo operated vacuum nozzle to provide control and follow the bidirectional movement of the ring rail to maintain accuracy.

8. An automatic yarn piecing assembly (900) for ring rail measuring and monitoring rack (200), the assembly comprising at least one:
- a multi-axis screw rod assembly comprising at least one guide roller, wherein a near end of two guide rails provided with angle plates to push the rollers;
a rotary cylinder /actuator to provide control and follow movement of up and down direction of the ring rail;
a servo motors wherein the servo operated vacuum nozzle moves from its initial position towards the ring spinning device to carry the tail broken yarn forward up to the drafting rollers;
a sensor wherein an end detecting sensors installed at both ends of guide rail;
a yarn tensioner wherein the said tensioner is provided to stretch the yarn during the piecing process by the servo operated vacuum nozzle;
a suction unit comprising a suction tube connected with mechanical block with spring wherein the movement used for piecing together a held yarn and loose end of a yarn to maintain suction effect continuously during the piecing process;
- a pinion mechanism assembly comprising at least one proximity sensor (6) provided to monitor and control the displacement of rail lowering and upper movement with measuring the displacement of the movement;
an encoder (2) wherein said encoder provides control and follow the movement of up and down direction of the ring rail to maintain the accuracy; and
- an integrated unit assembly for accelerating levering mechanism comprising at least one yarn tensioning lever (13) moving by pneumatic on the block during the doffing process wherein the yarn tensioner holds a yarn for threading the said yarn into the traveler and the ABC ring through a yarn guide rod and a yarn holding tube.

9. The automatic yarn piecing assembly (900) as claimed in claim 8, said assembly involves a sub-assembly and its sub-components wherein sub-assembly comprising a bottom screw rod assembly, a middle suction unit assembly, a side screw rod multi axis assembly, a top motors assembly, a yarn pulling unit assembly, a breaking unit assembly, an encoder assembly, a blowing unit assembly, a rotary blow pipe assembly.

10. The automatic yarn piecing assembly (900) as claimed in claim 8, wherein yarn end picking and joining linear, reciprocating, longitudinal accelerating levering mechanism with sliding device controlled by the plurality of pneumatic, electro mechanics and electrical devices.

11. The automatic yarn piecing assembly (900) as claimed in claim 8, wherein the yarn tensioner lever/rod (13) and its yarn tracking and pushing slitting device provided in front portion of the rod/lever guiding the broken yarn and tension the yarn by angular movement of the entire said assembly to maintain the tension the yarn and helps to yarn pushing lever/rod to insert the yarn into ring.

12. The automatic yarn piecing assembly (900) as claimed in claim 8, wherein the pulling slitting device maintain the dimensional parameters A= 12° to 40° and B = 1mm to 4mm, yarn pushing rod (11) and grooving device maintains the dimensional parameters A= 0.3 mm to 2 mm, B= 60° to 120°, C= 1.2 mm to 5 mm and D= 1 mm to 4 mm.

13. The automatic yarn piecing assembly (900) as claimed in claim 8, wherein picking slitting device is maintained at angle A =25° to 65° and the B, C and D maintained at 1.5 mm to 3.5 mm, 1mm to 4 mm and 0.1 mm to 1.5mm respectively.

14. The automatic yarn piecing assembly (906) as claimed in claim 8, wherein the Spindle locking plate (38) with less than 2 slot for locking is provided in front portion of the piecing assembly guiding the spindle of the entire said assembly to hold the piecing machine and helps to yarn piecing process.

15. The automatic yarn piecing assembly (904) as claimed in claim 8, wherein the lappet tilting plate (32) with 2 to 20 degree angle is provided to tilt the lappet during the piecing process of the machine.