WO2013064879A1 - Positive feeder device for feeding metal wires at constant tension - Google Patents
Positive feeder device for feeding metal wires at constant tension Download PDFInfo
- Publication number
- WO2013064879A1 WO2013064879A1 PCT/IB2012/002180 IB2012002180W WO2013064879A1 WO 2013064879 A1 WO2013064879 A1 WO 2013064879A1 IB 2012002180 W IB2012002180 W IB 2012002180W WO 2013064879 A1 WO2013064879 A1 WO 2013064879A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tension
- wire
- machine
- actuator
- stage
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
- B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
- B65H59/388—Regulating forwarding speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/003—Regulation of tension or speed; Braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
- B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/18—Driven rotary elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/094—Tensioning or braking devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/36—Wires
Definitions
- the present invention relates to a wire feeder device in accordance with the introduction to the main claim.
- tension control is fundamental to ensure constancy and quality of the finished product.
- correct tension control ensures the formation of high quality square coils by making the wire adhere precisely to the support, even in proximity to the corners present on the support, to avoid that known colloquially as a "soft coil”.
- Tension control is particularly important during the initial stage in the production of a coil, the stage in which the wire is wrapped about terminals (wrapping stage) to which it will then be welded to cause it to adhere perfectly to these latter and prevent it from breaking.
- the successive winding of two different coils comprises a stage in which an already completed coil, or rather the support on which the wire has been wound, is unloaded and a stage in which the new support is loaded to commence the winding and arrangement of a new coil.
- This operation can take place manually (by an operator) or automatically, by generally cutting the wire and mechanically moving an arm on which the support with the already wound wire is fixed (stage indicated hereinafter as the loading stage).
- the loading stage stage indicated hereinafter as the loading stage
- the normal tension application range varies from 5 to 4000 cN, depending on the wire diameter; evidently the smaller the wire diameter the lower is the working tension, and the greater the importance of controlling the tension during the winding stage.
- feeder devices or simply feeders specific for metal wires are known which enable said control.
- a first type of such devices comprises completely mechanical feeders in which a main body is present on which a wire brake (generally of felt pad type) is fixed, its purpose being to stabilize the wire originating from the spool, clean it of the paraffin generally present on the wire and feed it to the tensioning member.
- This tensioning member is generally formed from a movable arm hinged at one end to a body of the feeder and subjected to springs for return to a rest position. The purpose of this arm is to maintain the wire tension constant during its unwinding and to ensure its take-up when required by the implementation of the process (in the support change-over stage).
- the tension regulating device As the tension of the metal wire is generally regulated by one or more springs which cooperate with the tensioning arm, the tension regulating device must be adjusted manually and controlled position by position during the entire process. In this respect, this device represents an "open loop system" which is unable to correct any errors arising during the process (change in the inlet tension of the metal wire originating from the spool, damage or decalibration of one of the springs, dirt accumulation within the entry wire brake, etc.).
- This set tension also depends on the winding velocity, as it is partly the result of a friction tension which in its turn is a function of said velocity; for this reason large tension variations occur in the machine acceleration and deceleration stages.
- Electromechanical devices or feeders which in contrast to purely mechanical devices have an electric motor to which a rotating pulley is fixed about which the wire originating from the spool, after passing through the felt pad wire brake, winds for at least one turn before encountering a movable mechanical arm similar to that of mechanical feeders.
- Springs acting on the movable arm are present together with a electronic control unit which, in addition to controlling the motor operation, is able to measure the position of this arm. Depending on said position, this unit increases or decreases the motor velocity and consequently the wire feed velocity, in practice using the arm itself as a command for accelerating and braking.
- feeders also present the limits of the aforesaid strictly mechanical devices as they use the movable arm to tension the wire and work on "open loop" without real control of the final product.
- electronic braking devices are known which, in addition to the movable take-up arm, also comprise a load cell (or other equivalent tension measurer) positioned at the feeder outlet, with a device control unit using the measured tension value to regulate pre-braking generally upstream of the compensator arm.
- the wire tension is generated and controlled by acting on a rotary braking member.
- the device hence operates as a closed loop but is not able to feed the wire at a tension less than the spool unwinding tension as this member can only brake the wire and hence increase this tension.
- An object of the present invention is to provide a device which is able to feed a metal wire while measuring its tension and making it uniform (by decreasing or increasing it) at a possibly programmable predetermined value, by a closed loop control of the feed. In this manner, the device is able not only to brake the wire, but also to feed it at a tension less than (and not only greater than) that at which the wire unwinds from a corresponding originating spool.
- Another object of the present invention is to provide a device in which either a single wire feed tension can be set for the entire process to which it is subjected, or a different tension to achieve different tensions in different operative stages of the machine (wrapping, working, loading), all in a totally automatic manner or by interfacing with the machine.
- a further object of the present invention is to provide a device able to also operate, while offering optimal performance, on processing machines already present on the market and hence without any type of specific interfacing with these latter, said device acting on the wire on the basis of operative characteristics corresponding to the various operative stages of such machines, but without being necessarily connected to these latter and without receiving command signals therefrom.
- Another object of the present invention is to provide a device which is highly dynamic, in the sense of being able to respond instantly to velocity variations of the processing machine and to the different tension settings of this latter (for example, on the basis of different wire working stages), to hence optimize feed control during the changeover stages of the operative process (passage from wrapping tension to working tension, velocity ramps, etc.).
- Another object of the present invention is to provide a device which while having the wire tension perfectly under control, enables the machine velocity to be increased in particular with metal wires of particular characteristics, such as a capillary wire.
- a further object of the present invention is to provide a single device able to operate with the entire range of metal wires and of the working tensions to which they are subjected.
- Another object of the present invention is to provide a device able to feed the wire at high tension even at low velocities.
- a further object of the present invention is to provide a device with which the quantity of metal wire fed to the processing machine can be measured with absolute precision.
- Another object of the present invention is to provide a device able to monitor any wire breakage, sensed as a variation or absence of tension.
- Figure 2 is a view from the right of the device of Figure 1 , but with some parts removed for greater clarity;
- Figure 3 is a view from the left of the device of Figure 1 , but with some parts removed for greater clarity;
- Figure 4 is a section on the line 4-4 of Figure 1.
- a metal wire feeder device is indicated overall by 1 and comprises a body or casing 2 having a front face 3 and lateral faces 4 and 5. These latter are closed by cover elements which are not shown in Figures 2 and 3 in order to give visual access to the interior of the body 2.
- each roller 9, 10, preferably made of ceramic is to define the wire trajectory from a spool (not shown) to the device 1 and from there to a processing machine (also not shown). These trajectories are respectively indicated by F and W.
- the fact that the rollers are of ceramic (or of equivalent low friction coefficient material) is to minimize the friction between the wire and roller, so minimizing the possibility of damage to the wire during contact.
- the body 2 comprises a wire brake 12 with which the wire cooperates at its exit from the roller 9 and which has the task of stabilizing the wire entering the device and of cleaning it with usual felts (not shown) to remove any paraffin residues (originating from the previous wire drawing stage).
- this wire On leaving the wire brake 12, this wire encounters a first pulley 14 about which it winds (for a fraction of a turn or for several turns) before passing onto a second pulley 15, both said pulleys being driven by their own electric motor 16 and 17 respectively, associated with the body 2 and controlled and commanded in its operation by a control unit 18 also associated with said body.
- a movable take-up or compensator arm 20 presenting, at a free end 21 , a passageway for the wire, preferably via a roller 22 (also of ceramic or the like), on which the wire leaving the pulley 15 (and passing through an aperture 2A of the body 2) arrives.
- This movable arm lies inside the body 2, behind the face 3 thereof.
- the wire passes through the aperture 2A and then onto a tension sensor 25, for example a load cell, also connected to the control unit 18, from which it leaves to pass onto the roller 10 and be fed to the processing machine (arrow W).
- a tension sensor 25 for example a load cell
- the control unit 18 is able to measure wire tension via the sensor 25 and to modify the rotational velocity of the pulleys 14 and 15 by acting on the respective motors 16 and 17, and consequently to control and make uniform the wire tension at a predetermined value which is possibly programmable (for example on the basis of the various working stages to which the wire of the processing machine is subjected), and is set in the unit 18, which can be of microprocessor type and have (or cooperate with) a memory in which one or more tension values, for example corresponding to the aforesaid working stages, are tabulated.
- the preset tension value can be greater or less than the tension under which the wire unwinds from the spool.
- the body 2 also carries a display 33 controlled by the unit 18, by which the device operative conditions (measured tension, set tension, feed velocity, etc.) are displayed.
- the working parameters are also shown on this display, and can be set by a keyboard 34.
- the body 2 also comprises connectors (not shown in the figures) which enable the feeder to be electrically powered, and enable communication with the device via standard or proprietary buses (RS485, CANBUS, ETHERNET%) in order to read its state (measured tension, velocity, any alarm conditions) or to programme its operation (working tension, working mode).
- This body also comprises a 0-10 Vdc input for programming the working tension in analogue mode and a run-stop input to indicate to the device whether the machine is in the working stage, and one or more digital inputs through which different working tensions can be programmed on the basis of the different machine operative stages (wrapping, working, loading).
- the control unit 18 continually measures the wire tension via the tension sensor 25 and compares this measured value with a reference value (setpoint). Based on the difference between the measured tension and the set tension or setpoint, the control unit 18 acts on the motors 6 and 17 accelerating or decelerating them, in accordance with known P, PI, PD. PID or FOC (field oriented control) control algorithms, in order to make said measured tension value equal to the setpoint value.
- setpoint a reference value
- the device 1 is able to guarantee any set tension: in this respect, to guarantee this tension value the device does not use purely mechanical brakes (i.e. spring systems) or electromechanical brakes, but only the torque of the two motors 16 and 17 which drive the pulleys 14 and 15 on which the wire winds. In this manner the device is able to guarantee an exit wire tension which is greater or less than that present during the unwinding from the spool by controlling the velocity of the two motors16 and 17.
- the feeder 1 is able to guarantee any required set tension, to hence attain the object of having an applicational range (based on the wire diameter and consequently on the working tension, see Table 1 ) which is decidedly greater than all known solutions.
- the device is able to modify this setpoint value on the basis of the various operative conditions to which the wire can be subjected.
- the feeder device 1 can operate interfaced with the processing machine or completely automatically.
- interfacing there is communication between the machine and the device.
- the machine signals its operative state (i.e. the operative stage to which the metal wire is subjected) to the device 1 which consequently may modify the wire tension on the basis of the operative stage.
- Interfacing can take place for example via the 0-10 V analogue input, by which the machine intervenes in real time on the device 1 to generate the wire operative tension corresponding to the different working stages, hence attaining the object of having different tensions for the different operative stages.
- interfacing can take place via digital inlets of the device 1 corresponding to different operative tensions, programmed for example within the unit 18 or via the serial bus.
- the machine activates different operative tensions, to thus attain the object of achieving different tensions for the different operative stages.
- the machine can be connected to the device 1 by a serial interface so that, by means of a standard or proprietary fieldbus, the machine intervenes in real time on the device 1 to regulate the wire working tension, hence attaining the object of achieving different tensions for the different operative stages.
- the machine can be connected to the device 1 via a sync inlet of this latter.
- the control unit 18 receives synchronisation pulses from the machine (for example one at each revolution of a rotary member or at each winding of the wire about a support) and consequently varies the wire working tension (in accordance with a pre-established profile), for example at each synchronisation pulse.
- the device In the case of automatic mode operation, the device has no direct interfacing with the machine, and the change between the different applicational conditions (i.e. between the different wire tensions) takes place completely automatically.
- the control unit 18 In addition to knowing the tension measured via the sensor 25, the control unit 18 as stated also controls the velocity of the motors 16 and 17 and consequently knows its value instant by instant. This velocity and consequently the fed wire quantity is measured in known manner, for example by analyzing the state of common hall sensors or of an encoder which are connected to each motor or internal to the motor.
- the control unit 18 acts in one of the two following ways: by evaluating (and controlling) the tension on the basis of the fed wire quantity, or by evaluating (and controlling) the tension on the basis of the wire feed velocity.
- the control unit 18 uses for example the sensors associated with each motor 16 and 17 not to measure their velocity, but to measure the fed wire quantity (considered as the number or fraction of revolutions of the pulley 14 or 15 connected to the motor 16 or 17, on which the wire winds).
- the unit 18, on the basis of data present in the memory with which it cooperates, knows the variation in the tension as a function of the wire fed and controls it in consequence.
- the unit 18, by means of a profile of programmed working tensions, knows that the first 10 mm of wire have to be fed at a tension of 15 grams, the next 400 mm have to be fed at a tension of 100 grams, the next 10 mm at a tension of 15 grams and so on, until the termination of the productive process.
- the device 1 by simply measuring the fed wire quantity, is able to change the wire operative tension, in accordance with a profile or sequence of working tensions, to better adapt the feed to the different machine operative stages.
- the control unit 18 uses the sensors associated with each motor 16 and 17 to measure their velocity. This unit, on the basis of memorized data which relate this measured value to the tension, controls this tension.
- the unit associates different working tensions with each velocity range: for example for velocities between 0 and 10 metres/minute the wire is fed at 15 grams, whereas if the velocity passes into the range 10-100 metres/minute the wire is fed at 100 grams.
- the relationship between the feed velocity and the tension depends on the physical characteristics of the metal wire and on the process to which it is subjected.
- a machine operating on a metal wire generally provides for at least two separate feed velocities, at least for the wrapping stage (critical process carried out normally at low velocity) and the working stage in which it is sought to utilize the maximum winding velocity of the machine.
- the device according to the invention therefore adapts perfectly to working both with machines in which "communication" is provided between the device itself and the machine, and with machines already present on the market, in both cases succeeding in attaining the objects of the present invention and in particular ensuring that different tensions can be achieved under the different operative conditions.
- This enables for each operative stage the most appropriate tension to be set and consequently to maximize the machine effectiveness in terms of efficiency, quality and velocity of production (wire winding).
- the device 1 also comprises (see Figures 2-4) a compensator arm 20 free to rotate about a pin 40 fixed on a bracket 41 associated with the body 2. Hence, this arm can move within the body 2 through a predefined angular sector a (see Figure 2) towards or away from the tension sensor 25.
- a spring 41 shown interrupted in Figures 2-4
- a support 44 fixed to the device body 2 and at the other end to the compensator arm 20 via a movable carriage 46 driven by a stepping motor 48 via a (Archimedes) worm 47.
- a position sensor (not shown), connected to the control unit 18, is associated with the compensator arm 20 to measure its position within the sector a.
- the compensator arm 20 is hence able to oppose the sliding of the wire not in a static but in a dynamic manner: in fact the control unit 18 can vary the position of the carriage 46 (by acting on the motor 48) to which the spring 41 is connected, to obtain a variation of the force exerted by this latter on the arm 20 and bring this latter into the required position within the sector a. In this manner the arm 20 maintains the wire always perfectly taut on the load cell or tension sensor 25, in particular during the stages in which the wire is not fed to the machine (loading stage).
- the fact of being able to vary the force of the spring 41 hence enables the value of said tension to be regulated, so attaining the object of differentiating the working setpoint for this stage relative to that in which the wire is effectively fed.
- the arm 20 also creates a reserve of metal wire from which the machine can draw during sudden velocity changes; in such a case the arm 20 moves from a first position ct1 to a second position a2 within the sector a while waiting for the motor to attain the correct feed velocity.
- the presence of the arm 20 hence overcomes the dynamic limits given by the acceleration time of each motor 16 and 17, so enabling the wire tension to be maintained under control even during the machine velocity changes (acceleration), said tension hence always being made uniform at the required setpoint.
- the arm 20 hence defines a second tension control loop comprising also the sensor 25 and the unit 18, this second loop being added to the first loop defined by the motors 16 and 17, the sensor 25 and the unit 18.
- the arm 20 also enables any wire excess to be taken up during the machine deceleration stage in passing from the second working position a2 to the first position a1 within the sector a.
- the presence of the arm hence overcomes the dynamic limits given by the deceleration time of the motor, hence also in this case enabling the tension to be maintained under control during the machine velocity changes (deceleration), this tension always being made uniform at the required setpoint. This function also falls within the scope of the second regulation loop.
- the presence of the compensator arm 20 hence enables the device 1 to increase its dynamicity not only in the machine acceleration and deceleration stages but also under all those conditions in which more or less high absorption discontinuities are present, such as when forming square coils.
- the invention also enables a position of the arm 20 to be programmed which better adapts to the particular operative condition and which is independent of the working tension.
- control unit 18 by knowing the position of said arm, can vary the force of the spring 41 to bring the arm into the desired position, for example by making the arm always lie at the centre of the angular sector a, hence ensuring for the device an equal "stock" of wire for possible accelerations and decelerations of the machine.
- the device of the invention is hence able to control the wire tension value in any operative stage of the processing machine, whether during the feed stage or at rest, and to make it uniform at a possibly programmable predetermined value; it is also able to monitor (without any interfacing with the machine) the presence of the wire and/or its absence (breakage).
- the control unit 18 continuously verifies that the measured tension is within a range (preferably programmable) in the region of the working tension which is required and necessary for that particular operative stage.
- this unit senses that the measured value lies outside said range and remains there for a predetermined time (preferably programmable), it signals this irregularity (for example visually and/or acoustically by known signalling means) and activates an alarm by which the machine or independent machine section connected to the device is halted.
- a predetermined time preferably programmable
- the device can be formed with a single motor 16 or 17 of suitable torque to optimize space and costs.
- the device could be formed with a motor developed as described in EP2080724 in the name of the same applicant, in order to obtain high torques even at low velocities.
- operative conditions of the feeder device vary, dictated by the different machine operative stages, not only can a different operative tension be associated therewith, but also other settings, for example the coefficients of the P, PI, PD. PID or FOC (field oriented control) algorithms, or the enabling/disabling of certain different functions such as the recognition of a broken wire, or others.
- the spring 41 used as an opposition force for the compensator arm 20 instead of being only a simple single spring could comprise a plurality of springs of different elastic constants (to define a spring with gradual compression) in which each spring is able to work on different consecutive tension ranges. Hence with a single spring a wider applicational range is obtained with a greater regulation fineness.
- the device 1 can comprise at least one pulley 14 (or 15) with a corresponding motor 16 (or 17) controllable in two different and opposite directions of rotation such as to enable wire feed and excess take-up, for example during the loading stage.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020147014068A KR101792320B1 (en) | 2011-11-02 | 2012-10-29 | Positive feeder device for feeding metal wires at constant tension |
ES12813430.1T ES2566645T3 (en) | 2011-11-02 | 2012-10-29 | Positive supply device for supplying constant voltage metal cables |
CN201280054103.5A CN103987640B (en) | 2011-11-02 | 2012-10-29 | For feeding positive type feeder device wiry with constant-tension |
US14/353,728 US9540209B2 (en) | 2011-11-02 | 2012-10-29 | Positive feeder device for feeding metal wires at constant tension |
IN3316CHN2014 IN2014CN03316A (en) | 2011-11-02 | 2012-10-29 | |
EP12813430.1A EP2773583B1 (en) | 2011-11-02 | 2012-10-29 | Positive feeder device for feeding metal wires at constant tension |
BR112014010362-3A BR112014010362B1 (en) | 2011-11-02 | 2012-10-29 | positive feeder device for feeding metallic wires at constant voltage |
RU2014116648A RU2608019C2 (en) | 2011-11-02 | 2012-10-29 | Positive feeder device for feeding metal wires at constant tension |
JP2014539417A JP5974107B2 (en) | 2011-11-02 | 2012-10-29 | Aggressive feeding device for feeding metal wire with constant tension |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2011A001983 | 2011-11-02 | ||
IT001983A ITMI20111983A1 (en) | 2011-11-02 | 2011-11-02 | POSITIVE FEEDER DEVICE FOR POWERING CONSTANT VOLTAGE METAL WIRES |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013064879A1 true WO2013064879A1 (en) | 2013-05-10 |
Family
ID=45034065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2012/002180 WO2013064879A1 (en) | 2011-11-02 | 2012-10-29 | Positive feeder device for feeding metal wires at constant tension |
Country Status (12)
Country | Link |
---|---|
US (1) | US9540209B2 (en) |
EP (1) | EP2773583B1 (en) |
JP (1) | JP5974107B2 (en) |
KR (1) | KR101792320B1 (en) |
CN (1) | CN103987640B (en) |
BR (1) | BR112014010362B1 (en) |
ES (1) | ES2566645T3 (en) |
IN (1) | IN2014CN03316A (en) |
IT (1) | ITMI20111983A1 (en) |
MY (1) | MY166502A (en) |
RU (1) | RU2608019C2 (en) |
WO (1) | WO2013064879A1 (en) |
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WO2019155346A1 (en) * | 2018-02-06 | 2019-08-15 | Btsr International S.P.A. | Method and improved yarn feeder system and device for optimising yarn feed to a textile machine operating highly discontinuously or with alternating motion |
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ITMI20122185A1 (en) | 2012-12-20 | 2014-06-21 | Btsr Int Spa | METHOD AND DEVICE FOR POWERING TO VOLTAGE AND TO CONSTANT QUANTITY A METALLIC WIRE TO A MACHINE OPERATOR |
US9818150B2 (en) | 2013-04-05 | 2017-11-14 | Digimarc Corporation | Imagery and annotations |
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Also Published As
Publication number | Publication date |
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EP2773583A1 (en) | 2014-09-10 |
RU2014116648A (en) | 2015-10-27 |
IN2014CN03316A (en) | 2015-07-03 |
KR20140088174A (en) | 2014-07-09 |
ES2566645T3 (en) | 2016-04-14 |
CN103987640B (en) | 2016-03-16 |
CN103987640A (en) | 2014-08-13 |
BR112014010362A2 (en) | 2017-04-18 |
JP2014534140A (en) | 2014-12-18 |
MY166502A (en) | 2018-06-27 |
US20150014465A1 (en) | 2015-01-15 |
EP2773583B1 (en) | 2016-01-06 |
JP5974107B2 (en) | 2016-08-23 |
ITMI20111983A1 (en) | 2013-05-03 |
US9540209B2 (en) | 2017-01-10 |
RU2608019C2 (en) | 2017-01-11 |
BR112014010362B1 (en) | 2020-07-28 |
KR101792320B1 (en) | 2017-10-31 |
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