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WO1983002765A1 - Assemblage a bobine - Google Patents

Assemblage a bobine Download PDF

Info

Publication number
WO1983002765A1
WO1983002765A1 PCT/US1981/000377 US8100377W WO8302765A1 WO 1983002765 A1 WO1983002765 A1 WO 1983002765A1 US 8100377 W US8100377 W US 8100377W WO 8302765 A1 WO8302765 A1 WO 8302765A1
Authority
WO
WIPO (PCT)
Prior art keywords
hub
reaction members
shaft
friction member
axially
Prior art date
Application number
PCT/US1981/000377
Other languages
English (en)
Inventor
Keith E Koch
Original Assignee
Koch, Keith, E.
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 Koch, Keith, E. filed Critical Koch, Keith, E.
Priority to PCT/US1981/000377 priority Critical patent/WO1983002765A1/fr
Publication of WO1983002765A1 publication Critical patent/WO1983002765A1/fr

Links

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
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package

Definitions

  • This invention relates generally to a bobbin assembly and more particularly to a bobbin assembly for simultaneously disposing a plurality of wires and controllably maintaining a predetermined tension of low magnitude on the wires.
  • each individual wire be equally tensioned and that each multiple wire ply of the construction be applied at a predetermined, uniform tension.
  • a typical high pressure hose as many as 100 to 150 individual wires may be simultaneously wound about a mandrel. If each wire is not uniformly tensioned, the lesser-tensioned strands will have a tendency to lie above the plane of adjacent wires, and higher-tensional wires will have a tendency to become buried in preceding plys and lie below adjacent wires.
  • Unequal wire tension results in non-uniform wire lay, poor radial positioning of individual strands, and a less than desirable finished product.
  • the present invention is directed to overcoming one or more of the problems as set forth above, and includes a bobbin assembly, having a plurality of spool assemblies mounted on a common shaft.
  • Each of the spool assemblies has a wire supply reel and an adjustable brake assembly internally disposed within the reel.
  • the brake assembly controllably maintains a uniform predetermined tension on the wire as the wire is dispensed to an article.
  • a bobbin assembly for dispensing a plurality of wires and controllably maintaining a predetermined tension on the wires, includes a shaft, a plurality of hubs mounted on the shaft in a fixed relationship with the shaft, and a plurality of reels each rotatably mounted on a respective hub.
  • the bobbin assembly also includes a friction member positioned between a pair of reaction members on each of the hubs and a means for biasing at least one of the reaction members toward an associated friction member.
  • each of the individual strands of wire be supplied to a forming mandrel at a uniform predetermined tension.
  • the present invention solves this problem by providing each spool of a multiple spool bobbin assembly with an internally positioned, adjustable brake assembly.
  • the brake assembly imparts controllable and uniform resistance to the rotation of a supply reel and maintains a uniform tension on the wire throughout each revolution of the reel.
  • the present invention provides a bobbin assembly that enables the construction of a wire-wound article having a more uniform wire lay, i.e., less high or buried wires, and improved radial positioning of the applied wires.
  • the present invention also provides an improved, easily serviceable and adjustable brake assembly for maintaining a uniform tension of very low magnitude on the wire during a single revolution of the reel.
  • Fig. 1 is an isometric view of a multiple spool bobbin assembly of the present invention.
  • Fig. 2 is a longitudinal sectional view of a single spool assembly of the bobbin assembly of the present invention.
  • Fig. 3 is a cross-sectional view of a spool assembly of the bobbin assembly of the present invention taken along lines III-III of Fig. 2.
  • Fig. 4 is an end view of the bobbin assembly of the present invention mounted in a fixture for measuring the rotational resistance of the supply reel. _4 _
  • a bobbin assembly for simultaneously dispensing a plurality of wires and controllably maintaining a predetermined tension of low magnitude on the wires is generally indicated by the reference numeral 10.
  • the bobbin assembly 10 includes a plurality of spool assemblies 12, as shown in Fig. 1, mounted on a single shaft 14.
  • Each of the spool assemblies 12, as shown in Figs. 2 and 3, include a hub 16 mounted on the shaft 14, a pair of bearings 18,18' mounted on the hub 16, a reel 20 rotatably mounted on the bearings 18,18', and a brake assembly as generally indicated by the reference numeral 22 positioned radially inwardly of the reel 20.
  • a means 24 for maintaining the hubs 16 in a fixed relationship with respect to the shaft 14 includes a nut 26 * threadably mounted on each end of the shaft 14.
  • the nuts 26 are tightened, or drawn toward each other, thereby drawing all of the hubs 16 into an abutting relationship with respect to each other.
  • the hubs 16 are maintained in a fixed relationship with each other and with the shaft 14 by the restraining action provided by the tightened end nuts 26.
  • the hub 16 includes a radial flange 28 having a plurality of circum-f-erentially spaced recesses 30 formed in a radial wall 32 of the flange 28, a threaded end portion 34, and a plurality of flat surfaces 36 formed on a centrally disposed cylindrical body portion.
  • the reels 20 include, as viewed in Fig. 2, a left half portion 38 and a right half portion 40 joined by a plurality of bolts 42.
  • the left half portion 38 includes a stepped bore which, when joined with the right half portion 40, forms an annular slot 44 extending radially outwardly from the internal bore of the reel 20, exposing a portion of the bolts 42.
  • the right half portion 40 of the reel 20 includes a
  • -__ ⁇ radially oriented aperture 46 extending between the inner and outer surfaces of a central cylindrical portion, and an axially oriented aperture 48 extending between the radial walls of a flange portion of the right half portion 40.
  • the brake assembly 22 includes a first reaction member 50 and a spaced second reaction member 52 both axially slideably mounted on the hub 16, a friction member 54 axially disposed between the first and second reaction members 50,52, and a means 56 for controllably, axially biasing at least one of the reaction members 50,52 toward one another and toward the friction member 54.
  • the pair of reaction members 50,52 are preferably formed of steel and have a plurality of circumferentially spaced flat surfaces 58 formed on the inner periphery of the members 50,52 mating with the flat surfaces 36 formed on the central body portion of the hub 16.
  • the first and second reaction members 50,52 are therefore axially moveable on the hub in a longitudinal direction along the shaft but are rotatably fixed with respect to the hub by engagement of the mating flat surfaces 36,58.
  • the friction member 54 is preferably formed of an internally lubricated thermoplastic, such as ' a nylon and molybdenum disulphlde composite material, and has a plurality of circumferentially spaced, radially extending tabs 60 which are notched to receive an exposed portion of the bolts 42. Radial clearance is provided between the friction member 54 and hub 16, and is self-positioning between the pair of reaction members 50,52.
  • the friction member 54 is therefore both axially and rotatably moveable with respect to the hub 54, but rotatably fixed with respect to the reel 20 by engagement of the tabs 60 with the bolts 42.
  • the biasing means 56 includes a plurality of circumf rentially spaced springs 62 each respectively disposed in one of the recesses 30 formed in the flange 28 in an abutting relationship with the first reaction member 50, and a collar 64 threadably mounted on the threaded end portion 34 of the hub 16.
  • the collar 64 has a plurality of axially oriented slots 66 formed on a radially outer surface of the collar 64.
  • the slots 66 are alignable with either of the apertures 46,48 provided in the reel 20, enabling the collar to be selectively rotatably fixed with respect to the reel 20 by inserting an elongated pin or tool through the apertures 46,48 and into engagement with one of the slots 66.
  • a tension calibration fixture 68 is provided for measuring the resistance to rotation of the reel 20.
  • the test fixture includes a motor 70 connected to the shaft 14 of a bobbin assembly 10 by a drive belt 72, and a dial indicator force gage 74 having a hook 76 adapted for engagement with a notch 78 provided on the outer periphery of at least one of the flange portions of the reels 20.
  • the complete bobbin assembly 10 typically includes five spool assemblies, each of which, after calibration and adjustment of the individual brake assemblies 22, will be filled with a supply of wire, not shown, from a bulk supply source.
  • a 12.7mm (1/2 in.) dia. high pressure hose requires 75 to 90 individual strands of .3mm (.012 in.) dia. wire circumferentially applied at predetermined angles over one or more layers of elastomeric material previously formed over a mandrel.
  • the 75 to 90 strands of wire are typically supplied from about 15 to 18 of the bobbin assemblies 10, each bobbin assembly 10 being mounted on a shuttle which rotates about the hose. As described above, it is desirable to maintain a constant torque force between the reel 20 and the shaft 24 and thereby maintain a predetermined tension on each of the 75 to 90 wires during application to the article. It has been found that a wire tension for wire delivered from a full bobbin of about 3 to 4N (.7 to .9 lbs.) on the wire is desirable.
  • the assembled bobbin assembly 10 is mounted on the tension calibration fixture 68 with the drive belt 72 operatively engaging the shaft 14 of the bobbin assembly 10.
  • the motor 70 is started and operated at speeds sufficient to rotate the shaft 14 in a counter-clockwise direction as viewed in Fig. 4, at a typical operating speed as wire is dispended from the ' reel 20 to an article being constructed. Typically, this speed will be about 9 to 18 rpm.
  • the pull, or resistance to rotation, exerted by each of the reels 20 of the bobbin assembly 10 is measured by engaging the hook 76 of the dial indicator force gage 74 into the notch 78 provided on each of the reels 20.
  • the amount " of torque force transmitted from the rotary shaft 14 to the reel is controlled by adjusting the collar 64 and, thereby axially moving the reaction members 50,52. For example, if the indicator reading shows that the amount of pull exerted by the - reel should be increased, a pin or similar elongated tool, is inserted through one of the apertures 46,48 provided in the reel and placed into engagement with one of the slots 66 forme'd in the collar 64.
  • the coupled reel 20 and the collar 64 are then rotated together in a direction to cause the collar 64 to move the second reaction member 52 towards the first reaction member 50 and thereby increase the frictional contact between the reaction members 50,52 and the friction member 54. Conversely, if the amount of pull exerted by the reel 20 should be reduced, the coupled reel and collar are rotated in an opposite direction to that above to decrease the frictional contact between the respective reaction members 50,52 and friction member 54.
  • the radially oriented aperture 46 is particularly useful for adjusting the collar on empty reels of a multiple spool bobbin assembly.
  • the axially oriented aperture 48 is provided if it should be necessary to adjust the tension of a reel 20 containing a predisposed supply of wire. In the latter case, it is necessary to place the desired spool assembly 12 at an end of the bobbin assembly, or alternatively arrange as a single spool on a shaft, to permit access to the axially oriented aperture 48. In the end view of the tension calibration fixture shown in Fig. ' 4, only a single dial indicator force gage 74 is visible.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

Un assemblage à bobine (10) sert à distribuer une pluralité de fils métalliques et permet en même temps d'exercer une tension prédéterminée constante sur les fils métalliques. Lors de la fabrication de tuyaux de haute pression et à plis multiples renforcés avec des fils métalliques, il est nécessaire que chaque fil métallique soit appliqué avec une tension uniforme et prédéterminée. La présente invention résout ce problème en prévoyant que chaque rouleau (12) d'une bobine (10) à rouleaux multiples soit muni à l'intérieur d'un frein (22) ajustable. Le frein (22) communique à la rotation d'un dévidoir (20) dans chacun des rouleaux (12) une résistance commandée uniforme. L'invention est particulièrement utile dans la fabrication de tuyaux hydrauliques à haute pression.
PCT/US1981/000377 1981-03-23 1981-03-23 Assemblage a bobine WO1983002765A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1981/000377 WO1983002765A1 (fr) 1981-03-23 1981-03-23 Assemblage a bobine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1981/000377 WO1983002765A1 (fr) 1981-03-23 1981-03-23 Assemblage a bobine

Publications (1)

Publication Number Publication Date
WO1983002765A1 true WO1983002765A1 (fr) 1983-08-18

Family

ID=22161153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1981/000377 WO1983002765A1 (fr) 1981-03-23 1981-03-23 Assemblage a bobine

Country Status (1)

Country Link
WO (1) WO1983002765A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614752A1 (fr) * 1993-03-08 1994-09-14 The Goodyear Tire & Rubber Company Procédé et appareil de fabrication de nappes renforcées

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR631789A (fr) * 1926-07-03 1927-12-26 Eugene Wilmouth Ets Dispositif à friction réglable utilisé en guimperie pour le remplissage des roquetins et autres
US2277134A (en) * 1940-06-28 1942-03-24 Western Electric Co Brake
US2385479A (en) * 1942-10-26 1945-09-25 Rca Corp Film reel spindle
US2405446A (en) * 1943-11-02 1946-08-06 Carey Philip Mfg Co Roll supporting device
US2445607A (en) * 1947-02-18 1948-07-20 Nat Rubber Machinery Co Braked rotative assembly
US3137985A (en) * 1962-07-02 1964-06-23 Gen Electric Taping head
US3439483A (en) * 1966-05-23 1969-04-22 Western Electric Co Methods of and apparatus for packaging longitudinal material
US3720054A (en) * 1971-09-07 1973-03-13 North American Rockwell Method and apparatus for wire winding
US3907229A (en) * 1974-05-16 1975-09-23 Rockwell International Corp Bobbin assembly
DE2807111A1 (de) * 1977-02-22 1978-08-31 Inst Khim I Kautschukova Promi Servoeinrichtung zum erhalten einer konstanten spannung in einem drahtfaden

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR631789A (fr) * 1926-07-03 1927-12-26 Eugene Wilmouth Ets Dispositif à friction réglable utilisé en guimperie pour le remplissage des roquetins et autres
US2277134A (en) * 1940-06-28 1942-03-24 Western Electric Co Brake
US2385479A (en) * 1942-10-26 1945-09-25 Rca Corp Film reel spindle
US2405446A (en) * 1943-11-02 1946-08-06 Carey Philip Mfg Co Roll supporting device
US2445607A (en) * 1947-02-18 1948-07-20 Nat Rubber Machinery Co Braked rotative assembly
US3137985A (en) * 1962-07-02 1964-06-23 Gen Electric Taping head
US3439483A (en) * 1966-05-23 1969-04-22 Western Electric Co Methods of and apparatus for packaging longitudinal material
US3720054A (en) * 1971-09-07 1973-03-13 North American Rockwell Method and apparatus for wire winding
US3907229A (en) * 1974-05-16 1975-09-23 Rockwell International Corp Bobbin assembly
DE2807111A1 (de) * 1977-02-22 1978-08-31 Inst Khim I Kautschukova Promi Servoeinrichtung zum erhalten einer konstanten spannung in einem drahtfaden

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614752A1 (fr) * 1993-03-08 1994-09-14 The Goodyear Tire & Rubber Company Procédé et appareil de fabrication de nappes renforcées
US5425830A (en) * 1993-03-08 1995-06-20 The Goodyear Tire & Rubber Company Method and apparatus for manufacturing ply stock

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