EP0295468B1 - Dévidoir - Google Patents

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Publication number
EP0295468B1
EP0295468B1 EP88108396A EP88108396A EP0295468B1 EP 0295468 B1 EP0295468 B1 EP 0295468B1 EP 88108396 A EP88108396 A EP 88108396A EP 88108396 A EP88108396 A EP 88108396A EP 0295468 B1 EP0295468 B1 EP 0295468B1
Authority
EP
European Patent Office
Prior art keywords
pulley
arm
wire
dynamometric
braking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88108396A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0295468A1 (fr
Inventor
Marcel Gerest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Altic Sarl
Original Assignee
Altic Sarl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altic Sarl filed Critical Altic Sarl
Priority to AT88108396T priority Critical patent/ATE70520T1/de
Publication of EP0295468A1 publication Critical patent/EP0295468A1/fr
Application granted granted Critical
Publication of EP0295468B1 publication Critical patent/EP0295468B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65H59/16—Braked elements rotated by material

Definitions

  • the present invention relates to a reel comprising, in the direction of travel of a wire, at least one wire press, possibly a deflection pulley, a braking pulley and a pulley mounted on one end of a pivoting dynamometric arm, the other end comprises a graduated sector with means for positioning the point of attachment of one end of a dynamometric spring, the opposite end of which acts on a system for adjusting the braking torque of said braking pulley in order to provide automatic adjustment of the tension of the wire at the outlet of the reel, an output pulley, arranged in such a manner with respect to the braking pulley and the arm that, in the working position of the latter, the wire forms substantially a right angle between the braking pulley and the output pulley passing through the dynamometric arm pulley in the working position, all these elements being mounted on a support panel.
  • the invention relates more particularly to a wire reel applicable to winding machines, to unwind, to wire and, in general, to all devices in which it is necessary to ensure a constant tension and known value of the wire during its scrolling. So that the winding of a metal wire, eg the winding of an electric motor or transformer, is carried out under constant tension of the wire, it is necessary to exert a determined braking on the latter to ensure the tension necessary.
  • a metal wire eg the winding of an electric motor or transformer
  • the device must also be satisfactory for starting and stopping the winding. This braking regulation must remain satisfactory, even if the winding to be performed imposes more or less important pulses, and this at the highest possible speed.
  • the tension of the thread has a continuous component (the only one in the case of the winding of cylindrical carcasses) which is modulated by pulses generated by the passage of the edges and which cause the rupture when the speed increases.
  • a good yield it must be as high as possible.
  • the tension of the thread as a function of the rotation of the arm follows a sinusoidal law, and in the working position, the slope is still significant, and it would be desirable for it to be reduced, so that the adjusted tension of the thread changes as little as possible if the arm is moved slightly away from its working position due to the pulses due to the winding to be produced.
  • the object of the present invention is to provide an improved reel whose conditions of use are facilitated and whose technical performance is improved, in particular as regards the stability and the winding of rectangular carcasses.
  • the present invention provides a reel of the kind described in the preamble, which is essentially characterized in that the dynamometric arm is pivotally mounted on the support frame so as to occupy a working position substantially along an edge of the frame, while its part forming the slightly curved graduated sector substantially extends this same edge, or is parallel to it, in the working position.
  • the working position of the arm, along the edge of the frame, is very easy to observe, and one can, therefore, always operate the reel in optimal conditions, without special attention.
  • the opening of the wire press is achievable by a pivoting snap-in control with two positions, accessible from the front face of the frame and comprising a knurled knob for adjusting the pressure of the clamp. wire.
  • this can be achieved by a pivoting handle in two positions with the assistance of a spring, this handle being mounted on the front face of the frame between the wire press and the output pulley.
  • This command is located in the plane of the frame and not perpendicularly. It is not necessary to have access to the rear face, which allows to couple a right and left reel in the minimum width.
  • This same control also ensures the positioning against the output pulley of an element preventing the wire from coming off.
  • the layout is such that the hand placing the wire on the device can, after passing over the output pulley, ensure closing of the wire press and locking of the output wire, without letting go of the wire. It is a great convenience.
  • the reel proposed by the present invention is represented diagrammatically by a side view in FIG. 1. Its essential elements are mounted on a support frame 10 substantially rectangular provided with a lateral nut 12 allowing its fixing on a spindle not shown.
  • the reference 14 represents a wire press consisting of a fixed jaw 16 and a movable jaw 18, coated on their clamping surfaces with a layer of deformable material, eg felt.
  • Figure 1 illustrates the open position of the wire press.
  • a knurled button 20 protruding from the base of the frame 10, and therefore easily accessible allows adjustment of the clamping force of the wire press 14. This button 20 also allows, using a mechanism mounted on the rear face of the frame 10 and not visible in the figure, to open the wire presser 14.
  • the button 20 is moved from the position of figure 2 corresponding to the closing of the wire presser 14 to the position of the figure 1 for moving the movable jaw 18.
  • the open position is, nevertheless, a snap-in position, ie i.e. a stable position.
  • the closing of the wire press 14 is carried out by pivoting the handle 22 of a wire stop from the position according to FIG. 1 to that of FIG. 2. This movement releases the movable jaw 18 which closes automatically under the action of its spring not visible. This same movement of the handle 22 returns the button 20 to the position of FIG. 2 corresponding to the closing of the wire press 14.
  • References 24 and 26 respectively designate a return pulley and a braking pulley. It is the latter which, by slowing the progression of the wire, generates the necessary tension of the latter at the outlet of the reel.
  • a knurled button 28 also accessible from the front face of the frame 10 is used to modify the braking force of the pulley 26.
  • the braking system of the pulley 26 and the thread tension control are located on the back of the frame 10 and are not visible. However, since these systems correspond to the known systems described in each of the aforementioned documents, they will no longer be described in detail in the context of the present request and the reader will be kind enough to refer to one of these documents for further information concerning the constitution and operation of these braking and voltage control systems.
  • Self-adjusting of the tension is carried out, in a manner known per se, using a dynamometric arm 34 which acts by means of a spring 36 on the braking system to automatically increase or decrease the braking torque. exerted on the pulley 26.
  • the dynamometric arm 34 carries at its free end a pulley 40 and is mounted, by its opposite end, pivotally on a spur 32 of the frame 10.
  • the arm 34 is extended, beyond its axis of pivoting 42, by a graduated sector 38 to which is attached the dynamometric spring 36 acting on the braking system.
  • Sector 38 has a graduation in voltage values corresponding to the working range of the reel. The identification of the voltage values is such that they gradually increase from the region of the pivot axis 42 towards the free end of the sector.
  • the point of attachment of the spring 36 to the graduated sector is movable along all the marks appearing on the sector 38, for example by means of a cursor or by a configuration of the sector 38 in sawtooth allowing the reception of 'a hook at the free end of the spring 36.
  • the graduated sector is preferably in the form of a circular arc, the radius of curvature corresponding to the length of the spring 36 in the rest position according to Figure 2.
  • the wire to be wound up leaves the reel by an output pulley 48.
  • the wire located between the reel and the winding machine can be caused to vibrate like a violin string, which can cause breakage. It is possible to provide on the reel the fixing of an articulated arm 43 making it possible to place an eyelet or a pigtail 44 on this path of the wire, damping these vibrations and thereby making it possible to work faster.
  • the installation of a wire 46 is extremely simple. After having opened the wire press 14 by means of the button 20, the wire is passed, using one hand, successively through the wire press 14, around the return pulley 24, around the pulley braking 26, around the dynamometric pulley 40 and finally around the output pulley 48. When passing around the latter, one can operate with the same hand and at the same time the handle 22 to close the wire press 14 and the wire stop, the reel and the wire 46 therefore appearing as shown in FIG. 2.
  • the working position of the dynamometric arm 34 is that shown in FIG. 3 where the arm 34 is parallel to the longitudinal edge of the frame 10 and where the wire 46 passes over the traveling pulley 40 so that the strand outgoing makes approximately a right angle with the incoming strand.
  • This working position of the arm 34 is very easy to locate and does not require much address on the part of the operator. It is enough simply to pull, at the exit of the pulley 48, on the wire 46 until the arm 34 pivots towards the position of the illustrated 3 against the action of the dynamometric spring 36 which is extended by the graduated sector 38 In the position of FIG. 3, the brake is then released using the button 28 until the pulley 26 begins to rotate to let the wire 46 pass.
  • the wire 46 can therefore be hooked to the machine to wind.
  • it may however be appropriate to correct the braking setting using the button 28 so that the arm 34 is returned to its working position according to FIG. 3 if it is moved from this by activating the winding or if it has not been exactly before.
  • the dynamometric arm 34 In the position of FIG. 3, the dynamometric arm 34 is always in equilibrium between a resistant torque due to the elongation of the dynamometric spring 36 and a motor torque exerted by the tension of the wire 46 under the action of the machine. to wind. When the latter is equal to the braking torque adjustable by the button 28, the wire is released by the rotation of the pulley 26.
  • this equilibrium situation of the arm 34 does not only occur in the working position according to FIG. 3, but also in all the intermediate positions between it and the rest position according to FIG. 2 if the adjustment there is operated.
  • the working position according to FIG. 3 is, taking into account the force torques present, the optimal working position.
  • the operation of the reel described above is an analog servo. If, as a result of a momentary increase in the tensile force during winding, the tension of the wire at the outlet of the reel exceeds the tension displayed on the graduated sector 38 and to which the dynamometric spring 36 is attached, the arm 34 performs a rotation which causes an elongation of the dynamometric spring 36, therefore a signal on the block torque adjustment element which is reduced. Now, a reduction in the braking force of the pulley 26 reduces the tension of the wire until the balance is restored and allows the dynamometric arm 34 to return to its working position parallel to the edge of the panel 10.
  • the location of the braking and output pulleys in relation to the dynamometric arm determines by the distance Z the variation of the angle of the wire when the dynamometric pulley passes, i.e. the evolution of the engine torque.
  • STATIC MEASUREMENTS OF TORQUES Degree of arm rotation from the rest position col .I resistant couples Cm da N col. II torques on dynamometric arms for constant tension of 200g. 0 5 1.9 10 2.75 15 3.40 20 4.12 25 4.5 30 5.10 35 5.40 40 5.75 45 5.82 6.30 50 6. 6.30 55 5.9 6.30 60 5.75 6.30 65 5.5 6. 70 5.25 5.50 75 4.85 4.85
  • the table shows that the variations of the torques generated by the extension of the spring 36 on the one hand, and the movement of the dynamometric pulley 40 on the other hand, are very close in the range of the angular positions of the arm 34 between 50 ° and 75 °.
  • This is an important characteristic, because this balance provides good stability to the reel, which therefore has a wide range of use, practically horizontal, compared to known reels, which have a narrower range of use and, moreover, slightly inclined.
  • FIG. 4 shows the characteristic curves resulting from the superimpositions of the resistant torques and the motor torques of the table above for a reel according to the present invention in comparison with a known reel.
  • Curve A represents the effective tension of the wire in a reel according to the present invention for an initial adjustment of the device to 200 g. and for different angular positions of the torque arm. Since the laws which both the motor torque and the resistive torque satisfy are practically identical beyond 40 °, their superposition ensures a constant output voltage, which is demonstrated by the fact that the curve A becomes substantially horizontal from 40 °. If the preferred working position of the arm is that shown in FIG. 3, it should be noted that the acceptable working range extends from 40 ° to 80 °.
  • Curve B results from corresponding measurements carried out on a reel according to the state of the art.
  • the working position of the dynamometric arm is 50 ° from its rest position.
  • the real tension of the thread decreases for smaller angular positions, while it increases beyond the working position.
  • the acceptable working range is not wider than 10 °.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Polarising Elements (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
EP88108396A 1987-06-05 1988-05-26 Dévidoir Expired - Lifetime EP0295468B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88108396T ATE70520T1 (de) 1987-06-05 1988-05-26 Abwickelvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8707893 1987-06-05
FR8707893A FR2616139B1 (fr) 1987-06-05 1987-06-05 Devidoir a reglage automatique de la tension du fil

Publications (2)

Publication Number Publication Date
EP0295468A1 EP0295468A1 (fr) 1988-12-21
EP0295468B1 true EP0295468B1 (fr) 1991-12-18

Family

ID=9351780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108396A Expired - Lifetime EP0295468B1 (fr) 1987-06-05 1988-05-26 Dévidoir

Country Status (8)

Country Link
US (1) US4913374A (ja)
EP (1) EP0295468B1 (ja)
JP (1) JPS6434873A (ja)
AT (1) ATE70520T1 (ja)
CA (1) CA1308704C (ja)
DE (1) DE3866962D1 (ja)
ES (1) ES2028943T3 (ja)
FR (1) FR2616139B1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20111983A1 (it) 2011-11-02 2013-05-03 Btsr Int Spa Dispositivo alimentatore positivo per alimentare a tensione costante fili metallici
ITMI20131761A1 (it) 2013-10-22 2015-04-23 Marsilli & Co Dispositivo per la regolazione automatica del tensionamento del filo durante le varie fasi di avvolgimento in macchine per l'avvolgimento di bobine elettriche.
CN105355424B (zh) * 2015-11-12 2017-03-29 国网山东商河县供电公司 变压器绕线过程中线辊放线装置
CN106769403B (zh) * 2016-12-12 2023-06-20 苏州市吴江滨湖检测技术有限公司 一种钢丝绳、电缆物理性能检测的定位机械装置
CN107321817A (zh) * 2017-08-17 2017-11-07 天津天康金属制品有限公司 一种六角网生产线打簧机细丝放线架

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661914A (en) * 1948-06-05 1953-12-08 Melvin A Thom Tensioning mechanism for winding machines
US2714494A (en) * 1953-09-23 1955-08-02 Specialties Dev Corp Yarn tension compensating device
US3023979A (en) * 1956-05-19 1962-03-06 Philips Corp Device for endwise unwinding of delivery reels
FR1241232A (fr) * 1959-08-04 1960-09-16 Altic Dispositif auto-régleur de la tension du fil pendant le dévidage-bobinage
US3072361A (en) * 1961-09-05 1963-01-08 Ronson Corp Tension controlling device
US3520492A (en) * 1968-04-04 1970-07-14 Azonic Products Inc Antislippage means for wire tensioning apparatus
FR2041676A5 (ja) * 1969-05-28 1971-01-29 Altic Sarl
US3837598A (en) * 1973-10-03 1974-09-24 M Brown Wire tensioning apparatus
JPS59182167A (ja) * 1983-03-29 1984-10-16 Tanatsuku Eng Kk マグネツトテンシヨン装置
JPS6064955U (ja) * 1983-10-11 1985-05-08 タナツク・エンジニヤリング株式会社 巻線機のテンシヨン装置

Also Published As

Publication number Publication date
CA1308704C (en) 1992-10-13
ATE70520T1 (de) 1992-01-15
FR2616139A1 (fr) 1988-12-09
JPH04913B2 (ja) 1992-01-09
JPS6434873A (en) 1989-02-06
US4913374A (en) 1990-04-03
FR2616139B1 (fr) 1990-10-19
DE3866962D1 (de) 1992-01-30
EP0295468A1 (fr) 1988-12-21
ES2028943T3 (es) 1992-07-16

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