US3031006A - Apparatus for making wire spirals - Google Patents

Apparatus for making wire spirals Download PDF

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Publication number
US3031006A
US3031006A US769261A US76926158A US3031006A US 3031006 A US3031006 A US 3031006A US 769261 A US769261 A US 769261A US 76926158 A US76926158 A US 76926158A US 3031006 A US3031006 A US 3031006A
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US
United States
Prior art keywords
wire
guiding member
winding
mandrel
winding head
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
US769261A
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English (en)
Inventor
Johan D Fokkinga
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.)
N V Vereenigde Draadfabrieken
VER DRAADFABRIEKEN NV
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VER DRAADFABRIEKEN NV
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Filing date
Publication date
Application filed by VER DRAADFABRIEKEN NV filed Critical VER DRAADFABRIEKEN NV
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • H01K3/04—Machines therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal

Definitions

  • the invention relates to an apparatus for making wire spirals, in particular incandescent spirals for incandescent lamps, discharge tubes and similar apparatuses.
  • the Dutch patent specification 17,132 describes an arrangement for making wire spirals having substantially aligned straight ends, which spirals are wound by means of a Winding head via a wire guiding member onto a mandrel due to the mutual rotation of the winding head and the wire guiding member, said mandrel being adapted to be retracted when the winding is finished. It has been found that, with this known arrangement, in consequence of the strong friction of the wire in the mouthpiece forming the outlet of the wire guiding member, the chances are that the wire that is to be coiled may get damaged.
  • the invention has for its object an arrangement of the type above referred to, whereby the possibility of damaging the wire to be coiled is reduced to a minimum.
  • the wire guiding member is arranged for swinging movement with respect to the mandrel, in such a way, that during the winding of the spirals the wire is fed to the mandrel through the mouthpiece of the wire guiding member at an angle with respect to the axial direction of the mandrel which is approximately equal to the angle of the Winding pitch.
  • the present invention has namely shown that the damage experienced by the wire of the known arrangement must be substantially ascribed to the unfavorable angle at which the mouthpiece of the wire guiding member is placed. This angle, which is about 0, deviates considerably from the angle of the winding pitch, so that, between the mouthpiece of the wire guiding member and the mandrel, the wire must be strongly bent over some sort of auxiliary guiding member.
  • the straight extremity thereof which adjoins the wire guiding member, must, by turning this wire guiding member backwards, be brought in alignment with the straight extremity of the wire spiral, which extremityis located in the winding head. Due to the elasticity of the material of the wire there is a possibility that the first-named extremity will spring back so that the desired direction gets lost. In order to avoid this drawback it is recommended, after a spiral has been completed, to swing the wire guiding member back, beyond the position in which the mouthpiece of the winding head and the mouthpiece of the wire guiding member are extending substantially in alignment with respect to each other. In consequence thereof the relative extremity is bent a little too far, but, due to the elasticity, the extremity will thereafter assume the desired position.
  • the spindle round which the wire guiding element is swinging is supported by a slide that is adapted to move in parallel with the longitudinal direction of the mandrel.
  • a displacement of the slide is preferably carried out by means of wedges adapted to be slidably displaced in transverse direction with respect to the slide.
  • One wedge can herewith bring about the displacement during the Winding and the other wedge can eflfect the displacement while the straight ends of the spirals are being made.
  • the removal of the wound spiral from the mandrel may, according to the invention, be facilitated by turning the Winding head back through a small angle after the winding operation is finished in order to release the just wound spiral with respect to the mandrel.
  • Said turning back is preferably brought about by means of a cam disc connected with the winding head and a roll that is pressing against it, which roll, by snapping into a recess of the cam disc, adjusts at the same time the winding head in alignment with the mouthpiece of the wire guiding memher.
  • FIGURES 1a through 1h respectively show schematically the relative positions of the winding head and the wire guiding member in the various successive working phases.
  • FIGURE 2 shows a front view belonging to FIGURE 1b in which a part of the slide carrying the swingable wire guiding member is indicated.
  • FIGURE 3 is a plan view of the apparatus in which only the most important parts are indicated.
  • FIGURE 4 gives a cross section through the line IV-IV of FIGURE 3.
  • FIGURE 5 gives a cross section through the line V-V of FIGURE 3.
  • the numeral 1 designates the winding head, which is provided with a channel 2 for receiv ing the free extremity of the wire 6 that is to be coiled.
  • a slidably movable mandrel 4 is provided in the winding head as well as the wire clamping member 3 for securing the free end of the wire 6.
  • the wire guiding member 5 is provided with a channel 5 for passing the wire 6 through.
  • the wire can be fixed relatively to the wire guiding member 5 by means of the wire clamping member 7.
  • 9 is the hollow spindle of the Wire guiding member 5, in which the guiding pin 8 is coaxially incorporated.
  • the numeral 12 designates the cutters for cutting the finished spiral 11.
  • FIG. 1a shows how thereafter the wire guiding member 5 is brought into the immediate neighborhood of the winding head 1 and the free extremity of the wire 6 is inserted into the channel 2 of the winding head.
  • the wire clamping element 3 is then caused to engage the wire 6 while at the same time the wire guiding member 5 is caused to make a swinging movement and the wire clamping member 7 is released, after which the winding head .1 starts rotating in the direction indicated by the arrow.
  • the wire guiding member 5 assumes now a position in which the channel 5' forms an angle 1) with the axial direction of the mandrel 4; see FIG. 1d.
  • the winding pitch angle a is also indicated.
  • the angle b is chosen a little smaller than the angle a so that the wire 6, that is to be wound to form a spiral 11, passes the guiding pin 8 with some friction.
  • the winding head 1 is arrested in a position in which the channel 2 has rotated too far through a predetermined angle in dependency on the number of windings applied and the nature of the material the wire is made of. According to FIG. la the winding head 1 is then turned back somewhat until it reaches the position of FIG. la.
  • the wire guiding member 5 is swung against a plate spring 34 beyond the position in which the channel 2 of the winding head and the channel 5' of the wire guiding member 5 are forming a straight line.
  • the wire 6 is bent round the guiding pin in such a way that the spiral 11 with the straight extremities is entirely expanded when the wire guiding member has been brought into the position indicated in FIG.
  • the reciprocating movement of the slide 10 carrying the swingable wire guiding member 5 is eifected by two Wedges 15 and 15, carried by bars 16 and 17 which are mounted for slidable movement in transverse direction with respect to the sliding member 19.
  • These bars are standing under the influence of step back springs 18 and 19 and can, against the action of these springs, be slidably moved by means of tension rods 20 and 21 on behalf of the moving of the slide 10 to the right.
  • Said tension rods may be actuated by electromagnets, which, by means of contacts of a program-control switch, are switched in at predetermined moments of the cycle.
  • the wedges 15, 15 enter into engagement with rolls 22, 23 connected with the slide 10.
  • the wire clamping member 3 is operated by a tumbler-lever 24 which is caused to swing by means of a driving rod 25.
  • the wire clamping member 7 is operated by a two-armed lever 26 that is carried by the slide and has a driving rod 27.
  • the rods and 27 and the cam 35 are connected with electromagnets which, at due moments of the working cycle, are switched in and put by contacts of said program control switch.
  • the backward turning of the winding head 1 from the position id to the position 12 is eifected by means of a profile disc 31 (see FIGURE 5) with pressure roll 32.
  • the roll 32 is moved to engage the cam edge of recess 33 and cause a backward turning of the disc 31.
  • Winding head 1 also reverses in the direction of the arrow drawn in dotted lines after which the roll 32 snaps into the recess 33 of the disc 31 stopping the head 1 in its FIG. 1e position.
  • the roll 32 is moved by lever 36 which like other levers previously described are actuated by electromagnets programmed to operate in exact time sequence by the program control switch previously mentioned.
  • the backward turning of head 1 through the described small angle expands the spiral slightly and loosens it with respect to the mandrel sufficiently to enable easy separation of the spiral from the mandrel at a subsequent time in the operation cycle.
  • Apparatus for making wire spirals having straight extremities extending substantially in alignment with each other comprising an axially movable and retractable mandrel, a winding head rotatable about said mandrel, a passage in said winding head and releasable means for clamping one end of the wire in said passage during rotation of the winding head, a wire guiding member pivotably mounted about an axis transverse to said mandrel and supported for slidable movement parallel to said mandrel, means for pivotally moving said wire guiding member to a winding position in which the guiding member feeds wire to the mandrel at an angle approximately equal to the angle of the winding pitch during rotation of the winding head, means for slidably moving said guiding member to form a wire spiral about the mandrel, and means for pivotally moving said Wire guiding member to a spiral terminating position in which the wire in the guiding member is held aligned with said passage in the winding head after completion of the winding of the spiral
  • Apparatus according to claim 1 wherein means are provided for reversing the rotation of said winding head through a small angle after winding of the spiral for expanding the just wound spiral relatively to the mandrel.
  • said means for reversing the winding head comprises a cam disc having a recess and connected to the winding head, and a roll pressing against said disc, said roll being adapted to turn the winding head and snap into said recess whereby to adjust the angular position of the winding head to align the passage in the winding head with the wire held in the guiding member in its terminating position.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
US769261A 1957-10-29 1958-10-23 Apparatus for making wire spirals Expired - Lifetime US3031006A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL3031006X 1957-10-29

Publications (1)

Publication Number Publication Date
US3031006A true US3031006A (en) 1962-04-24

Family

ID=19876795

Family Applications (1)

Application Number Title Priority Date Filing Date
US769261A Expired - Lifetime US3031006A (en) 1957-10-29 1958-10-23 Apparatus for making wire spirals

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US (1) US3031006A (pt)
DE (1) DE1177246B (pt)
NL (2) NL221964A (pt)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322164A (en) * 1964-11-10 1967-05-30 Kahte Engineering Company Method and means for winding coils
US3342224A (en) * 1964-04-20 1967-09-19 Westinghouse Electric Corp Apparatus for fabricating filament support loops
US3470721A (en) * 1967-01-03 1969-10-07 Moog Industries Inc Coil spring winding machine
US4028920A (en) * 1974-12-12 1977-06-14 U.S. Philips Corporation Apparatus for high speed winding of coils
EP0149282A2 (en) * 1984-01-13 1985-07-24 Koninklijke Philips Electronics N.V. Method of manufacturing helically wound filaments and filaments manufactured by means of this method
FR2625926A1 (fr) * 1988-01-19 1989-07-21 Z Transportnogo Mashinostroe Dispositif pour la fabrication de ressorts a partir d'un fil
EP0338153A1 (en) * 1988-04-21 1989-10-25 Norio Matsuura Spring producing apparatus
EP0372872A2 (en) * 1988-12-07 1990-06-13 Texas Instruments Incorporated A method and apparatus for making a double helix thermostat metal spring
US5660067A (en) * 1995-09-07 1997-08-26 Liao; Chen-Nan Versatile spring making machine
US20130292890A1 (en) * 2010-12-01 2013-11-07 Nhk Spring Co., Ltd. Hollow coil spring and method for manufacturing same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60808C (de) * A. RlBOULET und E. moretton in Lyon, 39 rue de Vendöme Maschine zur ununterbrochenen Herstellung von Drahtspiralen
DE239832C (pt) *
US379393A (en) * 1888-03-13 harvey
US434804A (en) * 1890-08-19 quiggin
US952582A (en) * 1909-02-19 1910-03-22 Charles L Ritter Wire-coiling apparatus.
FR562828A (fr) * 1923-03-02 1923-11-20 Appareil pour la fabrication des ressorts spirales
US2439893A (en) * 1945-08-01 1948-04-20 Gen Electric Filament coiling apparatus
US2758629A (en) * 1951-09-26 1956-08-14 Allen D Lewis Apparatus for manufacturing multiple wire stranded helical springs
US2777351A (en) * 1945-10-29 1957-01-15 Bailey Meter Co Control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366783C (de) * 1923-01-11 Christian Heinzmann Werkzeug zum Wickeln von Schraubenfedern
BE367693A (pt) * 1924-03-15

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60808C (de) * A. RlBOULET und E. moretton in Lyon, 39 rue de Vendöme Maschine zur ununterbrochenen Herstellung von Drahtspiralen
DE239832C (pt) *
US379393A (en) * 1888-03-13 harvey
US434804A (en) * 1890-08-19 quiggin
US952582A (en) * 1909-02-19 1910-03-22 Charles L Ritter Wire-coiling apparatus.
FR562828A (fr) * 1923-03-02 1923-11-20 Appareil pour la fabrication des ressorts spirales
US2439893A (en) * 1945-08-01 1948-04-20 Gen Electric Filament coiling apparatus
US2777351A (en) * 1945-10-29 1957-01-15 Bailey Meter Co Control system
US2758629A (en) * 1951-09-26 1956-08-14 Allen D Lewis Apparatus for manufacturing multiple wire stranded helical springs

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342224A (en) * 1964-04-20 1967-09-19 Westinghouse Electric Corp Apparatus for fabricating filament support loops
US3322164A (en) * 1964-11-10 1967-05-30 Kahte Engineering Company Method and means for winding coils
US3470721A (en) * 1967-01-03 1969-10-07 Moog Industries Inc Coil spring winding machine
US4028920A (en) * 1974-12-12 1977-06-14 U.S. Philips Corporation Apparatus for high speed winding of coils
US4616682A (en) * 1984-01-13 1986-10-14 U.S. Philips Corporation Method of manufacturing helically wound filaments and filaments manufactured by means of this method
EP0149282A3 (en) * 1984-01-13 1985-08-14 N.V. Philips' Gloeilampenfabrieken Method of manufacturing helically wound filaments and filaments manufactured by means of this method
EP0149282A2 (en) * 1984-01-13 1985-07-24 Koninklijke Philips Electronics N.V. Method of manufacturing helically wound filaments and filaments manufactured by means of this method
FR2625926A1 (fr) * 1988-01-19 1989-07-21 Z Transportnogo Mashinostroe Dispositif pour la fabrication de ressorts a partir d'un fil
EP0338153A1 (en) * 1988-04-21 1989-10-25 Norio Matsuura Spring producing apparatus
US4884428A (en) * 1988-04-21 1989-12-05 Matsura Norio Spring producing apparatus
EP0372872A2 (en) * 1988-12-07 1990-06-13 Texas Instruments Incorporated A method and apparatus for making a double helix thermostat metal spring
EP0372872A3 (en) * 1988-12-07 1991-02-06 Texas Instruments Incorporated A method and apparatus for making a double helix thermostat metal spring
US5660067A (en) * 1995-09-07 1997-08-26 Liao; Chen-Nan Versatile spring making machine
US20130292890A1 (en) * 2010-12-01 2013-11-07 Nhk Spring Co., Ltd. Hollow coil spring and method for manufacturing same
US9145941B2 (en) * 2010-12-01 2015-09-29 Nhk Spring Co., Ltd. Hollow coil spring and method for manufacturing same

Also Published As

Publication number Publication date
NL103574C (pt)
NL221964A (pt)
DE1177246B (de) 1964-09-03

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