TWI752801B - A winding apparatus and a method for winding continuously arriving yarn or slit film tapes - Google Patents

Abstract

The invention relates to an apparatus and a method for controlling yarn winding tension in a winder system by reducing variations or fluctuations in thread tension during winding operations. The plurality of dancer arms (3) of the winding system are each provided with a tensioning device, which in turn has at least one polymeric fluidic tension actuator (8) which serves to determine an instantaneous signal which is approximately proportional to the required tension of the continuously arriving yarn (1). The tension actuator (8) generates required resistance on the dancer arm (3) in proportion to the required winding tension in the winding yarn (1). In the method for controlling the yarn winding tension, the change in said instantaneous angular position (3F) of said dancer arm (3) is monitored and used to regulate winding tension by changing rotational speed of spindle (2) through the individual winder head controller (13) in required proportion.

Description

Winding device and method for winding continuously arriving yarn or film strips

The present invention relates to a winding device for winding yarn or film strips arriving continuously from a feeding device. The invention also relates to a method for controlling the winding tension in a winding device during the winding of continuously arriving film strips or yarns (1). More particularly, the present invention relates to an apparatus and method for controlling yarn winding tension in a winder system. Even more particularly, the present invention relates to a device for reducing variations or fluctuations in warp tension during a winding operation.

A yarn winder is used to wind the continuously arriving polyolefin yarn (flat/fibrillated or any similar type) onto a bobbin. Here, yarns define flat ribbons, multifilament and monofilament yarns or any similar type of yarn or ribbon. Typically, bobbin holders (also known as mandrel cores) are mounted on the mandrels of each winder head, which in turn are assembled on a winder frame. Each spindle requires precisely controlled rotation and can therefore be driven independently by an electric motor through a suitable mechanism (such as a belt and pulley arrangement) or using a direct drive system. Conventionally, an encoder or other similar device for pulse generation is mounted on the motor for monitoring the speed of the motor and for communicating signals therefrom to the electronic controller by means of suitable cables. The controller further sends an electrical signal to the inverter/driver of the active motor, which determines the power to be imparted to the motor that drives the spindle.

Conventional winders of the type described above are widely used. Some of these winders are disclosed in US Pat. Nos. 5,228,630, 4,765,552 and DE 3,723,593.

In winding operations, it is critical to maintain the wound warp or other material under a substantially constant tension in order to achieve a uniform product. Therefore, it is necessary to monitor and control the warp tension and make adjustments when the tension varies from some predetermined value. Obviously, it is most desirable that the monitoring and adjustment of the warp tension be done automatically during the winding procedure.

In the conventional winder, the yarn winding tension is controlled by adjusting the tension of the oscillating arm tensioning spring (hereinafter referred to as the rocking arm resistance for reference). The reciprocating motion of the rocker arm is electronically monitored to keep the yarn delivered to the bobbin mandrel at a constant linear velocity under near uniform tension.

Also in conventional winders, the winding tension of the yarn is maintained by providing resistance to the movement of the rocker arm by adjusting the spring attached to the rocker arm. The position feedback of the rocker arm is transferred to the winder's control logic, which in turn rotates the bobbin mandrel (also known as the bobbin mandrel) so that one of the rocker arm positions is always maintained with minimal oscillation. In order to maintain the winding tension of various types of yarns of different properties (such as denier, width, etc.), the spring attached to the rocker arm is adjusted so as to minimize its variation as much as possible to achieve high quality production bobbins. Conventionally, the spring associated with the rocker arm is set once at the beginning of the winding procedure, which remains constant throughout the build of the bobbin as product, however, this is incompatible with the yarn tension, which Varies with package size during the unwinding process.

Furthermore, on any given narrow film making machine, commonly referred to as a tape extrusion line, there are multiple winders, an equal number ranging from 50 to 500, all within the same location as the tape extrusion line. Works at linear speed. However, precise adjustment of the spring position and tension of each winder head rocker arm spring is laborious, which is conventionally done manually.

The rocker arm is influenced by a spring force or gravity in order to generate a warp tension which, on the other hand, must be applied over the bobbin mandrel during the winding operation by controlling the speed of the winding motor. In certain cases, this warp tension can be very low or very high. As the bobbin diameter increases, the winding/spindle motor must be controlled at a reduced speed for maintaining the same linear speed. To this end, the winding/spindle motor has a known phase angle control. In order to control the speed reduction of the winding motor, the angular position of the rocker arm is used by a correction voltage generator according to the respective angular position. In this case, a center position of the rocker arm with a correction voltage value of zero is assigned, and the reverse correction voltage follows to both sides.

This scheme has the disadvantage that the current angular position of the rocker arm must be detected in order to derive the correction voltage. An angular change of the rocker arm is therefore a necessary condition for generating the correction voltage and thus operating the control device. At each change in the angular position of the rocker arm from the central position, the yarn tension varies depending on the deflection of the rocker arm spring load when an angle of the rocker arm changes and therefore a different spring force is required for different tension values. This has a detrimental effect, as a given spring will be able to generate a specific range of spring forces, which in turn generate tensions for a specific linear density (denier) range of the yarn being wound. Therefore, if one of the yarn deniers increases or decreases beyond a given range, the spring must be replaced, which is laborious and impractical.

Another possible problem associated with the spring loaded rocker arm is that the nominal position of the rocker arm tends to be quite different during different phases of winder operation. Even when unwinding with constant warp tension during weaving, different moments therefore occur depending on the diameter of the bobbin, which can cause variations in fabric width.

Even if a pneumatic piston is used instead of a spring, the unwinding tension varies due to the friction (stick-slip) effect of the pneumatic cylinder and its maintenance.

In addition, there is an increasing demand for winding of finer denier yarn materials and thus thicker denier yarns on the same winding system, due to space constraints and limited tension/force ranges, This is difficult for conventional tensioning systems like springs.

Therefore, there is a need for a winding device that overcomes the above-mentioned problems of rocker arms on winders.

Purpose of invention:

The main object of the present invention is to provide a winding device/device which on the one hand overcomes the inherent disadvantages of spring loaded rocker arm yarn tensioning systems in winders and on the other hand provides a smooth tensioning mechanism.

Another object of the present invention is to provide a winding device/device that is independent of the friction/stick-slip effect of conventional pneumatic cylinders.

Yet another object of the present invention is to provide a compact yarn tensioning system for overcoming space constraints.

A further object of the present invention is that the device/device system is capable of handling finer to coarser denier yarns.

A further object of the present invention is to easily set the tension on a plurality of winder heads through a centralized system.

Another object of the present invention is to control the winding tension so that there is an almost constant unwinding tension in subsequent operations like weaving.

A winding device for winding continuously arriving yarn (1) or thin strips of film is disclosed. The present invention relates to a film strip or yarn winding type device and a procedure for controlling yarn tension during winding. More particularly, the present invention relates to an apparatus and method for controlling yarn tension using a fluid tension actuator (8) in a winder system. Even more particularly, the present invention relates to a device for reducing variations or fluctuations in yarn tension during a winding operation.

The invention also relates to a winder for winding bobbins with yarn (1) or film strip material arriving from a plurality of feeders. The winder comprises a plurality of winding heads/winders each having at least one winding mandrel (2), each winding mandrel (2) being designed and configured to be rotated by a drive. Traversing devices are designed and configured to cooperate with one of the winding mandrels (2) to wind the material onto the bobbin. A plurality of rocking arms (3) are each provided with a tensioning device, which in turn has at least one tension actuator for determining an instantaneous signal approximately proportional to the desired tension of the successively arriving yarn (1) (8).

The winding device of the present invention for winding continuously arriving yarn or film strips in a winder system has: at least one winder controlled by an individual winder head controller (13) , the individual winder head controller (13) is controlled by a superior controller (12); a rocking arm (3) associated with each of the winders and provided with a tensioning device, wherein the The instantaneous angular position (3F) of the rocker arm (3) is variable during the yarn winding operation; a man-machine interface (MMI-11), which interacts with the higher-level controller (12). A key aspect of the present invention is that the tensioning device consists of at least one sealed polymeric fluid tension actuator (8) attached to the rocker arm (3) unit by means of a rotatable mechanism for generating the (3) The required resistance for movement. A lever (9) and a link (20) are used to connect the tension actuator (8) to the rocker arm (3). The tension actuator (8) generates the desired resistance to the rocker arm (3) proportional to the desired tension (or winding tension) in the wound yarn. Monitoring the change in the instantaneous angular position (3F) of the rocker arm (3) and using the change to adjust by changing the rotational speed of the mandrel (2) by the desired ratio through the individual winder head controller (13) Winding tension.

Another embodiment of the present invention provides a method for controlling winding tension in a winding device during winding of continuously arriving film strips or yarns (1) on a winder. In particular, a method for controlling the winding tension of a film strip or yarn (1) during its winding procedure is also disclosed. The method includes using the apparatus disclosed herein to determine the winding tension depending on the yarn denier or strip size running on the individual winder. A key aspect of the method of the present invention is the use of a hermetically sealed polymeric fluid tension actuator (8) to effectuate the winding tension generation, either manually controlled or via an electro-pneumatic regulator valve (17).

The overall arrangement of a winding device is shown in Figure 1, which comprises for delivering the continuously arriving yarn (1) to the roll fitted with the bobbin (2) by means of a pressure roller (6) fitted with a cam box (5). Winding a set of rollers on the mandrel, the cam box (5) has transverse guides for placing the yarn and a rocking arm with rollers for adjusting the winding tension of the yarn. In the conventional device for adjusting the winding tension, a spring-based tension setting device (3B) is used for the film strip or yarn (1) which is wound on the bobbin (2) to form the package according to the ) to change the resistance/tension of the rocker arm.

Typically, in conventional winders, the resistance of the rocker arm (3) to its oscillating movement during the winding procedure is controlled by setting a knob (3B—see FIG. 1), which can be set at the The torque of the spring in the knob is set at various positions, which effectively increases the rigidity of the rocker arm (3) system according to the properties of the yarn (1).

In Figure 1, the yarn (1) is continuously delivered from direction "a" from a feeding device such as a draw and conditioning roll of a belt line machine. The continuously arriving yarn (1) passes through a rocking arm roller (3A) onto a winding mandrel (2) fitted with a bobbin. A winder starts winding when the running yarn (1) past the rocker arm (3) roller (3A) causes the rocker arm (3) to assume its instantaneous angular position (3F) due to the yarn tension desired for winding around. As shown in Figure 1, position 3E represents the limit of angular movement of the rocker arm (3).

As also shown in Figure 1, when the arriving yarn (1) is wound onto the bobbin, a reciprocating transverse assembly or a cam box (5) together with other assembly components constitutes a pressure roller (6), A transverse guide (7) and a tension bow (4). The yarn (1) travels over the tensioning bow (4) before passing the film strip transverse guide (7).

The pressure roller (6) presses the mandrel (2) to maintain the winding tension in the yarn (1). The rotational speed of the spindle is electronically controlled in a closed loop according to the feedback provided when the rocker arm (3) is deflected, ie using a position sensor (16) or an encoder (21) relative to the rocker arm (3) at The optimum operating position (3D) during the winding operation is monitored for information on the instantaneous angular position (3F) of the rocker arm (3) in order to provide the optimum winding tension in the yarn. As the name suggests, the optimal operating position (3D) is the target position of the rocker arm (3) to achieve optimal packaging characteristics during the winding operation. However, during the winding operation, depending on the winding program parameters, the rocker arm (3) usually deviates from its optimal operating position (3D). The rocker arm (3) is configured or designed such that when it is angularly deflected from its optimum operating position (3D), the mandrel (2) starts to rotate and thus yarn winding begins on the mandrel (2). By providing a rocker arm (3) movement limiter (3C, not shown), it is facilitated to allow the rocker arm (3) to assume an extreme position (3E) during a winding operation.

Typically, in conventional devices, the setting of the tension setting knob (3B) does not change during the entire winding procedure. As part of the closed loop, a position sensor (16) mounted on the rocker arm (3) periodically transmits details of the instantaneous angular position (3F) of the rocker arm (3) to a coil that controls the speed of the spindle motor Winder head controller (13).

During a winding operation on a conventional winder with a spring-based rocking arm, the machine operator can decide based on his observations whether to manually tighten or loosen the yarn (1). For example, if the instantaneous angular position (3F) of the rocker arm (3) is such that the rocker arm (3) is deflected from its optimum operating position (3D) towards the winding bobbin (2), the yarn (1) will be at a greater rate than desired Proceed in a more relaxed state. On the other hand, if the rocking arm is deflected away from its optimum operating position (3D) in a direction away from the winding bobbin (2), the yarn travels in a tighter state than desired. According to the momentary position (3F) of the deflection of the rocker arm (3), the position details of the rocker arm (3) are communicated to the winder head controller (13) and the rotational speed of the mandrel (2) is adjusted accordingly to control the yarn tension Tight / Yarn Winding Tension.

As mentioned earlier, one of the major drawbacks of the conventional spring-based rocking tension/resistance settings is the inconsistent setting of individual winder heads, which ultimately results in fabric necking or shrinking due to varying resultant winding tensions, And sometimes lead to undesired frequent weft breakage.

As an alternative to fluid muscles, the tension actuator (8) can be an electric actuator, a hydraulic actuator, a link motion system and/or so-called "smart materials", including piezoelectric materials, magnetic Structural and electrostrictive materials, ie, materials with the ability to change viscosity (eg, from liquid to nearly solid), shape alloy materials (SMA), thermally responsive materials, and/or conductive polymers.

Figures 2, 2A, 2B and 2C show in their various embodiments the tension actuator (8) used in the winding device of the present invention for winding continuously arriving yarn or film strips . The tension actuator (8) is connected to the rocker arm (3) using a rotatable mechanism.

Specifically, the tension actuator (8) used in the present invention is a fluid muscle or a hermetically sealed polymeric fluid tension actuator that is also commercially available. In general, a fluid muscle system can be constructed as a linear member by wrapping a synthetic or natural rubber tube with a braided sheath. This forms an inflatable chamber. When a pressurized fluid is applied to a fluid muscle chamber, the chamber expands radially with a corresponding contraction of one of its lengths, resulting in linear motion. Metal or plastic fittings can be secured at both ends to transmit synthetic motion.

The tension actuator (8) is generally a linear element having a first end (8A) and a second end (8B). The tension actuator (8) is provided at its first end (8A) with a pneumatic connector (18) through which a pneumatic conduit/hose (19) is supplied by connection to an electro-pneumatic regulator pressure generated by a pressure line (14) of the valve (17).

The tension actuator (8) is connected at its second end (8B) to the lower end (3G) of the rocker arm (3). In order to create resistance to the movement of the rocker arm, it is important that the link between the tension actuator (8) and the rocker arm is constructed in a specific way, while allowing free rotational movement of the link itself. For this purpose, a lever arm (9) is provided at the second end (8B) of the tension actuator (8), which lever arm (9) is connected by means of a first rotatable connection (23) to a rod (20). Both the lever arm (9) and the link (20) are freely rotatable relative to each other at the end of the link (20) near the lever arm (9). The other end of the connecting rod (20) is connected to the lower end (3G) of the rocking arm (3). There is a first angle (22) formed between the link (20) and the lower end (3G) of the rocker arm (3), the value of which depends on the design of the winder system. The connecting surface between the connecting rod (20) and the lower end (3G) of the rocking arm (3) can be rotated around a fulcrum or a pivot point as a unit through a second rotatable connecting piece (24). Thus, the junction itself is free to rotate about a fulcrum, while the first angle (22) between the link and the rocker arm (3) is constant. Since the first angle (22) is constant, the tension generated by the action of the tension actuator (8) is transmitted to the rocker arm (3) as a resistance to its angular movement. The tension actuator (8) is attached to the winder surface or to the winder frame as appropriate using a third rotatable link (10).

The first, second and third rotatable connections (23, 24 and 10) may be accomplished by any of mechanical joints such as a threaded nut arrangement, a bushing pin arrangement or a bearing pin arrangement.

In one embodiment, there are multiple tension actuators (8) connected to any single winder head. To facilitate this, a plurality of positions are provided on the link (20), a respective first rotatable link (23) may be provided. In one embodiment (see Figures 2B and 2C), the link (20) includes a plurality of holes (20A) that can be provided for the respective first rotatable links (23). Having multiple connection points on the link (20) also allows for any given tension actuator (8) to change the position of the connection between the lever (9) and the link (20) from one hole to another, This allows to vary the applied pneumatic pressure, which in turn causes an increase or decrease in the tension transmitted to the rocker arm (3).

The general technical term for hermetic polymeric fluid tension actuators is "fluid muscle", which is partly a descendant of one of Richard Gaylord's inventions because it is a generic term (along with pneumatic artificial muscles). Gaylord obtained US Patent No. 2,844,126 for "Fluid Actuated Motor System and Stroking Device" in 1955.

Generally, a fluid muscle can be constructed by wrapping a synthetic or natural rubber tube with a braided sheath. This forms an inflatable chamber. When a pressurized fluid is applied to a fluid muscle chamber, the chamber expands radially with a corresponding contraction of one of its lengths, resulting in linear motion. Metal or plastic fittings can be secured at both ends to transmit synthetic motion.

In the simplest possible embodiment of the invention, a single fluid muscle/hermetic polymeric fluid tension actuator is used to replicate the restoring force provided by the spring.

The sealed polymeric fluid tension actuator has a reinforced elastic bladder that changes a shape in a predetermined manner under changes in its internal pressure. Fluid muscles are commercially available and can be operated using pressurized air, other gases or hydraulic fluids.

For the purposes of the present invention, the terms "tension actuator" or "sealed polymeric fluid tension actuator" (8) will be used interchangeably. A pneumatic hose (19) supplying pneumatic pressure is connected to the tension actuator (8) so as to generate the required rotational movement of the rocker arm (3) proportional to the fluid pressure supplied to the tension actuator (8) resistance. A source of pressurized fluid is contained in a reservoir held at the distal location. The uniformity of the tension exerted by the rocker arm (3) on the successively arriving wound yarn or strip is controlled by generating resistance. Any change in incoming yarn/strip tension causes the rocker arm (3) to swing to a position depending on the difference between the yarn tension reached and the desired/set winding tension. Thus, the change in the instantaneous angular position (3F) of the rocker arm (3) (indicated by the various positions of the rocker arm (3) in Figure 1) - this change is monitored by an encoder (21), which may be an optical encoder Type, magnetic based or other similar device for pulse generation - communicates with the head controller (13) of the individual winder for changing the motor speed of the mandrel (2) in the desired ratio so that the rocker arm (3) is A steady state is maintained near the optimum position (3D), thereby maintaining a constant winding tension across the winding system. Stabilizing the rocker arm (3) at the optimal operating position (3D) is carried out by communicating the data collected by the sensor (15) or encoder (21) to the head controller (13) of the individual winder , and adjust the motor speed of the spindle (2) based on this.

In another embodiment, a cost-effective angular position monitor can be used to determine the instantaneous angular position (3F) of the rocker arm (3) through the position sensor (15) and the angle arm (16), the instantaneous angle The position (3F) is communicated to the head controller (13) of the individual winder.

A unique feature of the present invention is that the resistance on the rocker arm/winding tension can be controlled by pneumatic/fluid pressure applied to the tension actuator (8), without any friction or stick-slip effects. Furthermore, the tension of more than one winder head can be set through a single control point, such as an upper level controller (12). Furthermore, since the tension actuator (8) used in the present invention does not have any moving parts like a piston, there is no friction effect and at the same time the desired tension/force can be set very precisely. Another important factor is that the hermetically sealed polymeric fluid tension actuator (8) has a relatively smaller space requirement than equivalent pneumatic cylinders used in conventional winders.

A sealed polymeric fluid tension actuator (8) is housed in the winder compartment, preferably on the back side. A sealed polymeric fluid tension actuator (8) abuts the rocker arm (3) so that it can be easily accessed for maintenance purposes.

The first end (8A) of the sealed polymeric fluid tension actuator (8) is attached to the surface of the winder body.

The sealed polymeric fluid tension actuator (8) can be configured with the rocker arm in the desired orientation based on the actual yarn path and space availability in the winder. The sealed polymeric fluid tension actuator (8) may be parallel to the rocker arm or may be vertical. As shown in Figure 2, in one embodiment, a sealed polymeric fluid tension actuator (8) is attached below the rocker arm (3).

In one embodiment, a yarn braid is used in the polymer tension actuator (8). The size of the polymeric tension actuator (8) is directly controlled by the applied pneumatic pressure which in turn causes transmission to the rocker arm roller (3A) through a parameter such as deflection resistance/force of the rocker arm (3) An increase or decrease in tension.

The pneumatic pressure setting of the polymerization tension actuator (8) can be changed manually or automatically through the upper level controller (12) according to the desired pressure adjustment for proper winding of the bobbin/package. The pressure setting of the tension actuator (8) proportional to the yarn winding tension depends on the yarn properties required for optimal winding, in particular yarn denier, thickness, yarn type. Preferably, the pressure setting, pack cut-off size and final pack size are input to the system controller using a suitable input interface before starting the winding operation. However, these settings can be adjusted during the winding process without stopping the winding operation.

In Figure 3, a functional diagram with a preferred embodiment is depicted. A Man Machine Interface (MMI) (11) is provided for entering the desired machine/program related parameters of the winder (such as yarn, denier, weight, speed, tube OD), as those skilled in the art have Known. The MMI (11), an upper-level controller (12), and the winder head controller (13) communicate with each other through a serial or parallel bus backbone. A superior controller (12) is used to enter data points into a channel in an assembly of the winder units, and a winder head controller (13) (or simply the head controller) is used to One controller for each winder unit. There is more than one winder unit/head in a winder series.

An upper level controller (12) is provided to communicate data to all winder head controllers (13) for their operational requirements and functions. Thus, the upper-level controller (12) transmits program data (such as line speed, winding recipe, etc.) from each winder to a connection to a single "upper-level" controller (12) (also known as a "gateway" controller) the respective winder head controller (13).

In one embodiment of the present invention, the human-machine interface (11) enables pre-programmed values at a predetermined time interval by manual input or, as appropriate, in the upper-level controller (12) during the course of the winding operation Change the pressure of the supplied fluid to the tension actuator (8).

As a drawing, Figure 3 shows a pressure line (14). According to the invention, the pressure line (14) from the electro-pneumatic regulator valve (17) is connected to the tension actuator (8) of the rocker arm (3) of the individual winder unit. Therefore, the pressure line (14) replaces the conventional torsion spring force to adjust the oscillation resistance of the rocker arm (3).

In the case of an electro-pneumatic regulator valve (17), a voltage or current base signal value is directly available to precisely control the applied pneumatic pressure to at least one tension actuator (8) using a higher-level controller (12).

The invention also discloses a method of controlling the winding tension in a winding device during the winding of continuously arriving film strips or yarns (1). The method uses the apparatus described in detail in the preceding description. As part of the method, the winding tension is determined depending on the yarn denier or strip size running on the individual winder. The desired winding tension is generated using a tension actuator (8) of the sealed polymeric type as described. Use the upper-level controller (12) to centrally adjust the pressure value supplied to the tension actuator (8) to match the determined winding tension value. This method also allows the pressure supplied to the tension actuator (8) to be controlled through the electro-pneumatic regulator valve (17).

The pressure setting of the pressure line (14) or the pressure at the tension actuator (8) can be changed according to the desired pressure adjustment suitable for proper winding through the MMI (11). For example, the winder settings of the present invention can be defined as a denier range of 200 to 6000, and the pressure can vary from 0.5 bar to 7.5 bar. Thus, the pressure change changes the size of the tension actuator (8) and produces the desired resistance on the rocker arm (3).

In a working comparative example (prior art), in order to wind a continuous reaching 850 denier film strip yarn at a speed of 450 m/min on a conventional winder with a spring-based rocker arm system, the The winding tension was set at about 75 grams. The resulting bobbins of yarn exhibited normal winding shape and during subsequent use as weft on circular fabrics of 500 mm tubes exhibited width variations of up to ±10 mm along the tube length.

On the same extrusion line, at other locations, the winder of the present invention with a sealed polymeric fluid tension actuator (8) is used to wind continuously arriving 850 denier film strips at a speed of 450 m/min Yarn, set the winding tension precisely to about 75 grams. The resulting bobbins of yarn exhibited normal winding shape and during subsequent use as weft on circular fabrics of 500 mm tubes exhibited width variations of up to ±6 mm along the length of the tube. The applied pressure was set to 0.8 bar.

In addition, on the same inventive winder used to wind the continuously arriving 450 denier film tape yarn at a speed of 550 m/min, the winding tension was precisely set to about 25 grams. The resulting bobbins of yarn exhibited normal winding shape and during subsequent use as weft on circular fabrics of 500 mm tubes exhibited width variations of up to ±3 mm along the tube length.

Those skilled in the art will appreciate that this reduction in fabric width variation (from ±10 mm to ±6 mm to ±3 mm) significantly improves winding quality.

As apparent from the foregoing discussion, there are several embodiments of the present invention.

In a preferred embodiment, a winding device for winding continuously arriving yarn (1) or thin strips of film is disclosed, comprising: at least one winder having a mandrel and being wound by a separate a head controller (13) control; an upper-level controller (12) for controlling the individual winder head controller (13); a rocking arm (3) for each of the at least one winder associated with one and provided with at least one tensioning device, wherein the instantaneous angular position (3F) of the rocking arm (3) is variable during the yarn winding operation; and a human-machine interface (11), which communicates with the superior The controller (12) interacts. The key aspect of this embodiment is that the tensioning device has a first end (8A) and a second end (8B) and is attached to the rocker arm at its second end (8B) using a rotatable mechanism (3) at least in the form of a tension actuator (8).

In another embodiment, by providing a first rotatable link (23) between a lever (9) and a link (20) provided at the second end (8B) and provided at the A second rotatable connecting piece (24) between the connecting rod (20) and the lower end (3G) of the rocking arm (3) forms the aforementioned rotatable mechanism.

In a further embodiment, a first angle (22) is formed between the link (20) and the lower end (3G) of the rocking arm (3), the first angle (22) being constant.

In yet a further embodiment, the tension actuator (8) is connected by means of a third rotatable connection (10) to the winder frame on which the device is mounted.

In yet a further embodiment, the first, second and third rotatable connections (23, 24 and 10) are selected from the group comprising one of a threaded nut arrangement, a bushing pin arrangement or a bearing pin arrangement Type or tie a hinge.

In another embodiment, the tension actuator (8) is a fluid muscle or a sealed polymeric fluid tension actuator (8).

In yet another embodiment, a pneumatic connector (18) is provided near the first end (8A) of the tension actuator (8), to which a pneumatic conduit/hose (19) is attached The device (18) is supplied with pressure from a pneumatic pressure line (14).

In a further embodiment, the tension actuator (8) is configured to generate a resistance proportional to the desired winding tension in the arriving yarn (1) for the rotational movement of the rocker arm (3).

In yet a further embodiment, the rocker arm (3) is provided with an angle arm (16), the instantaneous position of which is monitored using a position sensor (15).

In another embodiment, the instantaneous angular position (3F) of the rocker arm (3) is monitored by an encoder (21) based system mounted on the individual winder.

In a further embodiment, the winding tension in more than one winder head is set by a higher-level controller (12).

In yet a further embodiment, the pneumatic pressure applied to the tension actuator (8) through the pressure line (14) is controlled manually or automatically using an electro-pneumatic regulator valve (17).

In another embodiment, the encoder (21) is of a type selected from the group consisting of optical types, magnetic types or other similar pulse generating types.

In yet another embodiment, the pressure setting of the pressure line (14) or the pressure at the tension actuator (8) is set via the man-machine interface (11).

In yet another embodiment, the link (20) has the lever (9) of any tension actuator (8) connected to the plurality of positions where the link (20) is located.

In a further embodiment, at least one hole (20A) is provided on the link (20) at the location where the lever (9) of any tension actuator (8) is connected to the link (20).

In yet a further embodiment, the human-machine interface (11) can be changed to the tension actuator (8) at predetermined time intervals by manual input or by entering pre-programmed values in the upper level controller (12). ) through the pressure of the supplied fluid.

In yet a further embodiment, the number of tension actuators (8) provided on any winder head is more than one.

In another embodiment, the first rotatable link (23) is formed at one of the holes (20A) provided in the link (20).

In yet another embodiment, a method for controlling winding tension in a winding apparatus during winding of continuously arriving film strips or yarns (1) on a winder is disclosed. It includes the following steps: a. providing a device as disclosed herein; b. Determine the winding tension depending on the yarn denier or strip size running on the individual winder; c. Use the sealed polymeric tension actuator (8) to generate the winding tension; d. Centrally adjust the pneumatic pressure value in proportion to the winding tension; and e. Optionally control tension actuator pressure through electro-pneumatic regulator valve (17).

In another embodiment of the method of the present invention, the pneumatic pressure adjustment of step d is performed by stabilizing the rocker arm position in the optimal operating position (3D), the pneumatic pressure adjustment proportional to the tension generated in step c Adjust the rotational speed of the mandrel.

In a further embodiment, the optimal operation of the rocker arm (3) at this optimum is carried out by communicating the data collected by the sensor (15) or encoder (21) to the head controller (13) of the individual winder The stabilization at the position (3D) is based on which the motor speed of the spindle (2) is adjusted.

In yet another embodiment of the method disclosed herein, the centrally adjusted pneumatic pressure is adjusted without stopping the winding operation of the device.

While the above description contains numerous details, these should not be construed as limiting the scope of the invention, but as exemplifying preferred embodiments thereof. It must be recognized that modifications and variations are possible based on the disclosure given above without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be determined not by the illustrated embodiments, but by the scope of the appended invention claims and their legal equivalents.

1: Film strips/yarns 2: Mandrel with bobbin 3: rocker arm 3A: Rocking Arm Roller 3B: Tensioning device 3D: The best operating position of the rocker arm 3E: Final position of the rocker arm 3F: Instantaneous angular position of the rocking arm 3G: Lower end of rocker arm 4: Tension the bow 5: Cam Box 6: Pressure roller 7: Lateral guides 8: Tension actuator 8A: The first end of the tension actuator 8B: The second end of the tension actuator 9: Leverage 10: Third rotatable connector 11: Man-Machine Interface (MMI) 12: Superior controller 13: Winder head controller 14: Pressure line 15: Position Sensor 16: Angle Arm 17: Electro-pneumatic regulator valve 18: Pneumatic connector 19: Pneumatic Conduit/Hose 20: connecting rod 20A: Hole 21: Encoder 22: First corner 23: The first rotatable connector 24: Second rotatable connector a: direction

Figure 1 shows an overall arrangement of a winding device;

Figure 2, Figure 2A, Figure 2B, Figure 2C show the tensioning device of the present invention in its various embodiments;

FIG. 3 shows a schematic diagram of a man-machine interface (MMI), an upper-level controller, and a winder head controller.

3: rocker arm

3G: Lower end of rocker arm

8: Tension actuator

8A: The first end of the tension actuator

8B: The second end of the tension actuator

9: Leverage

10: Third rotatable connector

15: Position Sensor

16: Angle Arm

18: Pneumatic connector

19: Pneumatic Conduit/Hose

20: connecting rod

22: First corner

23: The first rotatable connector

24: Second rotatable connector

Claims (22)

A winding device for winding continuously arriving yarn (1) or thin strips of film, comprising: at least one winder having a mandrel and controlled by a separate winder head controller (13) , a superior controller (12) for controlling the individual winder head controller (13), a rocking arm (3) associated with each of the at least one winder and provided with at least one Tightening device, wherein the instantaneous angular position (3F) of the rocking arm (3) is variable during the yarn winding operation, a human-machine interface (11), which interacts with the higher-level controller (12), characterized by In that the tensioning device is at least tensioned with a first end (8A) and a second end (8B) and at its second end (8B) attached to the rocker arm (3) using a rotatable mechanism in the form of an actuator (8) by providing a first rotatable connection (23) between a lever (9) and a link (20) provided at the second end (8B) and A second rotatable link (24) formed between the link (20) and the lower end (3G) of the rocking arm (3) is provided to form the rotatable mechanism. The device of claim 1, wherein a first angle (22) is formed between the link (20) and the lower end (3G) of the rocking arm (3), the first angle (22) being constant. A device as claimed in claim 1 or 2, wherein the tension actuator (8) is connected by means of a third rotatable connection (10) to the winder frame on which the device is mounted. The device of claim 1 or 2, wherein the first, second and third rotatable connections (23, 24 and 10) are selected from the group consisting of a threaded nut arrangement, a bushing pin arrangement or a bearing pin arrangement The type of group or a hinge. The device of claim 1 or 2, wherein the tension actuator (8) is a fluid muscle or a sealed polymeric fluid tension actuator (8). An apparatus as claimed in claim 1 or 2, wherein a pneumatic connector (18) is provided near the first end (8A) of the tension actuator (8), a pneumatic conduit/hose (19) being attached to the The pneumatic connector (18) is supplied with pressure from a pneumatic pressure line (14). 2. The device of claim 1 or 2, wherein the tension actuator (8) is configured to produce rotational movement of the rocker arm (3) proportional to the desired winding tension in the arriving yarn (1) resistance. The device of claim 1 or 2, wherein the rocking arm (3) is provided with an angle arm (16), the instantaneous position of which is monitored using a position sensor (15). The device of claim 1 or 2, wherein the instantaneous angular position (3F) of the rocker arm (3) is monitored by an encoder (21) based system mounted on the individual winder. The apparatus of claim 1 or 2, wherein the winding tension in more than one winder head is set by a higher-level controller (12). An apparatus as claimed in claim 1 or 2, wherein the pneumatic pressure applied to the tension actuator (8) through the pressure line (14) is controlled manually or automatically using an electro-pneumatic regulator valve (17). 8. The apparatus of claim 8, wherein the encoder (21) is of a type selected from the group consisting of optical types, magnetic types or other similar pulse generating types. An apparatus as claimed in claim 1 or 2, wherein the pressure setting of the pressure line (14) or the pressure at the tension actuator (8) is set via the man-machine interface (11). The device of claim 1 or 2, wherein the lever (9) of the link (20) having any tension actuator (8) is connected to the plurality of positions where the link (20) is located. The device of claim 1 or 2, wherein at least one hole (20A) is provided in the link (20) at the location where the lever (9) of any tension actuator (8) is connected to the link (20) )superior. An apparatus as claimed in claim 1 or 2, wherein the human-machine interface (11) is capable of changing to the tension actuator at predetermined time intervals by manual input or by input of pre-programmed values in the superordinate controller (12) (8) The pressure of the supplied fluid. An apparatus as claimed in claim 1 or 2, wherein the number of tension actuators (8) provided on any winder head is more than one. The device of claim 14, wherein the first rotatable link (23) is formed at one of the holes provided in the link (20). A method for winding a continuously arriving yarn (1) or a thin strip of film, characterized in that the method comprises the steps of: a. providing a device as claimed in any one of claims 1 to 18; b. depending on The winding tension is determined by the yarn dani or strip size running on the individual winders; c. The winding tension is generated using the sealed polymeric tension actuator (8); d. Proportionately adjust the pneumatic pressure value centrally; e. Control the tension actuator pressure through the electro-pneumatic regulator valve (17) as appropriate. The method of claim 19, wherein the pneumatic pressure adjustment of step d is performed by stabilizing the rocker arm position in the optimal operating position (3D), the pneumatic pressure adjustment adjusting the heart in proportion to the tension generated in step c The rotational speed of the shaft. The method of claim 20, wherein the rocker arm (3) at the optimum is performed by communicating data collected by the sensor (15) or encoder (21) to the head controller (13) of the individual winder The stabilization at the operating position (3D), on the basis of which the motor speed of the spindle (2) is adjusted. The method of any one of claims 19 to 21, wherein the centrally adjusted pneumatic pressure is adjusted without stopping the winding operation of the device.

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