EP0056330A2 - Machine à rouler des ressorts comprenant un outil de tranchage - Google Patents

Machine à rouler des ressorts comprenant un outil de tranchage Download PDF

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Publication number
EP0056330A2
EP0056330A2 EP82300136A EP82300136A EP0056330A2 EP 0056330 A2 EP0056330 A2 EP 0056330A2 EP 82300136 A EP82300136 A EP 82300136A EP 82300136 A EP82300136 A EP 82300136A EP 0056330 A2 EP0056330 A2 EP 0056330A2
Authority
EP
European Patent Office
Prior art keywords
tool
coiling
machine
cut
tool holder
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.)
Granted
Application number
EP82300136A
Other languages
German (de)
English (en)
Other versions
EP0056330B1 (fr
EP0056330A3 (en
Inventor
Bernard P. Lampietti
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.)
Torin Corp
Original Assignee
Torin Corp
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 Torin Corp filed Critical Torin Corp
Priority to AT82300136T priority Critical patent/ATE15867T1/de
Publication of EP0056330A2 publication Critical patent/EP0056330A2/fr
Publication of EP0056330A3 publication Critical patent/EP0056330A3/en
Application granted granted Critical
Publication of EP0056330B1 publication Critical patent/EP0056330B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B21F11/005—Cutting wire springs

Definitions

  • Cut-off operations the severing of a coil spring formed at a leading end portion of wire, have been accomplished in prior art spring coiling machines by cut-off tools cooperating with an arbor about which the springs are coiled. That is, at the end of a coiling operation, a cut-off tool mounted on a pivotal tool holder is swung into engagement with the wire at the desired position and usually with an anvil-like edge of the coiling arbor immediately therebehind. Holders for the cut-off tools are conventionally mounted on opposite sides of the coiling arbor for selective mounting of cut-off tools thereon for left and right hand springs.
  • the tool holders have been conventionally operated from a cam behind the front frame of the machine and with a relatively complex driving mechanism including push rods etc.
  • a cyclically operable spring coiling machine having a vertical front frame and a coiling station at an upper portion thereon is provided with at least one pair of oppositely rotatable feed rolls for intermittently advancing wire longitudinally to the coiling station.
  • a relatively fixed coiling arbor at the coiling station is off-set slightly with respect to the line of wire feed movement so that the wire is advanced along one side of the arbor.
  • the arbor has generally oppositely oriented anvil-like edges for copperation with a cut-off tool in a cut-off operation.
  • At least one coiling tool is provided at the coiling station and is arranged to engage the longitudinally advancing wire to obstruct the linear movement thereof and thereby to progressively bend the wire about the coiling arbor and impart a coiling stress thereto resulting in the formation of coil springs.
  • At least one cut-off tool at the coiling station includes improved operating means and serves intermittently to sever coiled leading end portions of the wire whereby to provide individual coil springs.
  • a holder for the cut-off tool is movably supported on and exposed at the front of the machine frame for urging the cut-off tool toward and away from anvil means which may be on the coil ing arbor. In movement toward the coiling arbor the cut-off tool engages the wire at a selected position and with an anvil-like edge of the arbor therebehind severs the wire as required.
  • a second tool holder is provided generally opposite the first tool holder and is adapted to carry a cutting tool for operation similar to that described but for a spring of opposite hand.
  • a connecting means be tween the tool holders serves to operate the same in unison but generally in opposition to each other.
  • first and second pivot shafts are provided respectively for the tool holders with interconnecting gear means at rear end portions thereof.
  • An operating means for the tool holders takes the form of a continuously rotating horizontal shaft which forms a part of the coiling machine drive mechanism and which has a front end portion projecting through the vertical front frame of the machine beneath and in spaced relationship with the tool holders.
  • a rugged and accurate motion transmitting and converting means is exposed at the front of the machine and is connected between the projecting front end portion of the continuously rotating shaft and a first tool holder.
  • the motion transmitting and converting means preferably including an eccentric on the.shaft and an oscillable arm operated thereby, serves to effect a single tool holder and cut-off tool movement toward and away from the coiling arbor and wire coil thereabout during each rotation of the shaft.
  • an adjustment means which may comprise complementary threaded elements between the oscillable arm and the first tool holder.
  • the said adjustment means serves to adjust the position of the cut-off tool toward and away from the cutting arbor as may be required for various coil springs. Further, the adjustment means is exposed and readily accessible at the front of the machine for ease and convenience in effecting necessary adjustments during set-up operations of the machine.
  • a spring coiling machine indicated generally at 10 has first and second pairs of oppositely rotatable feed rolls 12,14 and 16,18 for advancing wire longitudinally leftwardly to a coiling station indicated generally at 20.
  • the upper feed rolls 12,16 rotate in a clockwise direction and the lower feed rolls 14,18 rotate in a counterclockwise direction to feed wire 22 leftwardly through guides 24,26 and 28 for the formation of the wire into a coil spring configuration 30 at its leading
  • the leading end portion of the wire 22 is coiled about a coiling arbor 32 at the coiling station 20, the arbor 32 cooperating with a coiling tool 34 in the form of a coiling roll.
  • Coiling arbor 32 and coiling tool 34 are relatively fixed at the coiling station so that longitudinally advancing wire engages the roll 34 and is obstructed in its linear movement thereby,'the wire thus being progressively bent about the arbor 32 with a coiling stress imparted thereto resulting in the formation of the leading end coil spring configuration 30.
  • Element 38 at the coiling station 20 may take the form of a pitch tool engageable with the wire during coiling about the arbor 32 progressively to pitch the same as required for the coil spring to be formed.
  • Element 39 is a final wire guide which cooperates with an upper surface of the pitch tool in guiding the wire 22 immediately prior to coiling of the wire.
  • the cut-off tool 36 is mounted on a tool holder 40 and cooperates with a separate anvil means or an anvil-like edge 41 formed on the coiling arbor 32.
  • a tool holder 42 disposed above the coiling arbor 32 may carry a cut-off tool such as the tool 36 for cooperation with a separate anvil means or a second anvil-like edge 43 on the coiling arbor.
  • the tool holders 40,42 are movable toward and away from the coiling arbor 32 and wire coiled thereabout to effect cut-off operations cooperatively by a tool held thereby and the anvil-like edges 41,43 on the arbor.
  • springs of opposite hand can be accommodated by selectively employing a cut-off tool on the holders 40,42.
  • the spring coiling machine 10 is or may be conventional and for further illustration and description of such a machine including operating means for elements such as the feed rolls, the pitch tool 38 etc. reference may be had to Bergevin and Nigro U.S. Patent No. 2,119,002 for Spring Coiling Machine, dated May 3, 1938 and Bergevin U.S. Patent Re. 24,345 for Spring Coiling Machine dated August 20, 1957.
  • the machines shown and described in these patents, however, are of the segment drive type and while highly accurate and dependable in operation they are limited as to the rate of spring production achievable thereon.
  • a high speed spring coiling machine is shown and described in co-pending U.S. Application Serial No.
  • the spring coiling machine 10 has a substantially vertical front frame 44, Fig. 4 and the tool holders 40,42 are mounted forwardly thereof and movable relative thereto.
  • the tool holders 40,42 are pivotally mounted respectively on pivot shafts 46,48 which project forwardly.through the frame 44 of the machine, are journaled respectively at 50,51 and which extend substantially in parallelism rearwardly in the machine.
  • Connecting means between the shafts 46,48 may vary but preferably take the form of drivingly engaged gears 52,54 at rear end portions of the shafts 46,48 respectively.
  • the lower tool holder 40 of course swings in a clockwise direction in a cut-off operation while the upper tool holder 42 swings in a counterclockwise direction in a cut-off operation.
  • the lower or first tool holder 40 is operated by a drive mechanism to indirectly operate the tool holder 42 through the shafts 46,48 and gears 52,54.
  • a cutting tool 36 may be mounted on the tool holder 40 or, alternatively, the tool 36 may be mounted on the tool holder 42 depending upon the hand of the spring to be severed.
  • the lower or first tool holder 40 is operated from a horizontally extending and continuously rotating shaft 56 which forms a part of the coiling machine drive mechanism and which has a front end portion thereof projecting forwardly through the vertical front frame 44 of the coiling machine.
  • the shaft 56 as best illustrated in Figs. 3 and 4 is disposed beneath and in spaced relationship with the tool holder 40 and, as illustrated in Fig. 2, is driven by a gear 58 in turn driven by gear 60 and gears 62 and 64.
  • a belt pulley arrangement drives the gear 64 from a drive motor and speed reducer unit 66 in Fig. 2.
  • the shaft 56 is one of the main drive or operating shafts of the spring coiling machine and of course may include other operating means such as cams etc. rearwardly of the front frame of the machine.
  • a motion transmitting and converting means exposed at the front of the machine and connected between the shaft 56 and the tool holder 40 is operable to effect a single tool holder and cut-off tool movement toward and away from the coiling arbor 32 during each rotation of the shaft 56.
  • the cut-off operation may be readily timed for occurrence once during each cycle of machine operation.
  • the motion transmitting and converting means includes an eccentric 58 mounted on the forwardly projecting end portion of the shaft 56 and operatively associated with anoscillablearm 60.
  • the oscillable arm 60 is thus provided with a component of movement toward and away from the tool holder 40 at a pivot pin 62 which connects the motion transmitting and converting means to the tool holder.
  • a bifurcated bracket 64 carries the pivot pin 62 and ! imparts the desired movement to the tool holder 40 in pivoting the holder about its pivot shaft 46 as required.
  • an adjustment means forms a part of the motion transmitting and converting means and is interposed between the arm 60 and the bracket 64.
  • the adjustment means may vary in form but as shown comprises complementary threaded elements adjustable to vary the throw or degree or amount of movement of the holder 40 about its pivot shaft 46.
  • springs of various diameter and wire size can be readily accommodated in a set-up operation.
  • the adjustment means is readily accessibl from the front of the machine facilitating such set-up operation.
  • the adjustment means comprises threaded member 66 which enters internally threaded member 68 supported for rotation in an upper end portion of the arm 60. The member 68 may be rotated to effect the necessary adjustment with lock-nut 70 in a loosened condition and, thereafter the lock-nut 70 may be tightened to secure the adjustment means in the desired position of adjustment.
  • the improved cut-off means of the present invention is of rugged and highly accurate construction.
  • the cut-off means is operated from one of the main shafts of the spring coiling machine by direct connection with an eccentric and oscillable arm having the characater- istics of positive and accurate movement. Further, necessary adjustments during set-up operations can be effected with a high degree of ease and convenience.
  • the adjustment means is exposed and readily accessible at the front of the machine eliminating any need to gain entry to and effect adjustments internally of the machine in areas of difficult accessibility.
EP82300136A 1981-01-14 1982-01-12 Machine à rouler des ressorts comprenant un outil de tranchage Expired EP0056330B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82300136T ATE15867T1 (de) 1981-01-14 1982-01-12 Federwickelmaschine mit trennvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22491981A 1981-01-14 1981-01-14
US224919 1994-04-08

Publications (3)

Publication Number Publication Date
EP0056330A2 true EP0056330A2 (fr) 1982-07-21
EP0056330A3 EP0056330A3 (en) 1982-08-25
EP0056330B1 EP0056330B1 (fr) 1985-10-02

Family

ID=22842774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300136A Expired EP0056330B1 (fr) 1981-01-14 1982-01-12 Machine à rouler des ressorts comprenant un outil de tranchage

Country Status (6)

Country Link
EP (1) EP0056330B1 (fr)
JP (1) JPS57134226A (fr)
AT (1) ATE15867T1 (fr)
BR (1) BR8200144A (fr)
CA (1) CA1167743A (fr)
DE (1) DE3266585D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007181863A (ja) * 2006-01-06 2007-07-19 Toyo Seikan Kaisha Ltd 二重構造成形体の製造方法及び二重構造成形体
CN106734761A (zh) * 2016-12-28 2017-05-31 新乡辉簧弹簧有限公司 扭簧切断对切方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2119002A (en) * 1937-03-20 1938-05-31 Torrington Mfg Co Spring coiling machine
US3009505A (en) * 1958-08-04 1961-11-21 Torrington Mfg Co Spring coiling machine
DE2527862A1 (de) * 1974-06-24 1976-01-15 Torin Corp Mehrzweckfederwickelvorrichtung
DE2826875A1 (de) * 1978-06-19 1979-12-20 Wafios Maschinen Wagner Verfahren und vorrichtung zum herstellen von schraubenfedern

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2119002A (en) * 1937-03-20 1938-05-31 Torrington Mfg Co Spring coiling machine
US3009505A (en) * 1958-08-04 1961-11-21 Torrington Mfg Co Spring coiling machine
DE2527862A1 (de) * 1974-06-24 1976-01-15 Torin Corp Mehrzweckfederwickelvorrichtung
DE2826875A1 (de) * 1978-06-19 1979-12-20 Wafios Maschinen Wagner Verfahren und vorrichtung zum herstellen von schraubenfedern

Also Published As

Publication number Publication date
ATE15867T1 (de) 1985-10-15
BR8200144A (pt) 1982-11-03
JPS57134226A (en) 1982-08-19
DE3266585D1 (en) 1985-11-07
JPH0223253B2 (fr) 1990-05-23
EP0056330B1 (fr) 1985-10-02
CA1167743A (fr) 1984-05-22
EP0056330A3 (en) 1982-08-25

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