EP0056330B1 - Federwickelmaschine mit Trennvorrichtung - Google Patents
Federwickelmaschine mit Trennvorrichtung Download PDFInfo
- Publication number
- EP0056330B1 EP0056330B1 EP82300136A EP82300136A EP0056330B1 EP 0056330 B1 EP0056330 B1 EP 0056330B1 EP 82300136 A EP82300136 A EP 82300136A EP 82300136 A EP82300136 A EP 82300136A EP 0056330 B1 EP0056330 B1 EP 0056330B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coiling
- tool
- machine
- cut
- wire
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
Images
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
- the present invention relates to a cyclically operable spring coiling machine having a vertical front frame and a coiling station at an upper portion thereof.
- the invention is particularly concerned with the aforementioned machine including at least one pair of oppositely rotatable feed rolls on said frame for intermittently advancing wire longitudinally to the coiling station, a relatively fixed coiling arbor at the coiling station, at least one coiling tool at the coiling station arranged to engage the longitudinally advancing wire to obstruct the linear movement thereof whereby progressively to bend the same about the coiling arbor and impart a coiling stress thereto resulting in the formation of a coil spring configuration at a leading end portion thereof, an anvil means at said coiling station, a pair of cut-off tools at said coiling station generally on opposite sides of said coiling arbor and co-operable with said anvil means intermittently to sever coiled leading end portions of the wire whereby to provide individual coil springs, a pair of holders for said cut-off tools movably supported on and exposed at the front of the machine frame for urging the cut-off tool toward and away from the anvil means and wire coiled thereabout, connecting means between said tool holders for moving said tool holders in un
- a spring coiling machine in accordance with the prior art portion of claim 1 is disclosed in US Patent Specification 3009505.
- German Offenlegungsschrift No: 2826875 discloses motion transmitting and converting means 108 in Figure 3 connected between a rotating driving shaft 100 and a tool holder 110 comprising an eccentric 58 mounted on a portion of said continuously rotating driving shaft 100 and an associated arm 104 oscillable thereby to effect the tool holder movement as aforesaid.
- Said oscillable arm 104 includes an adjustment means for changing the throw of a tool holder 46 towards and away from the anvil means and wire coiled thereabout.
- 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 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 lowerfeed 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 end portion.
- 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 cooperating with a separate anvil means of 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 EP-A-37415 (published 14.10.81).
- the improved cut-off means of the present invention finds utility in either type of spring coiling machine but is particularly well suited to the high speed machine of the copending application.
- 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 jour- naled 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 an oscillable arm 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 accessible 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 characteristics 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Springs (AREA)
- Shearing Machines (AREA)
Claims (5)
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 | 1981-01-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0056330A2 EP0056330A2 (de) | 1982-07-21 |
EP0056330A3 EP0056330A3 (en) | 1982-08-25 |
EP0056330B1 true EP0056330B1 (de) | 1985-10-02 |
Family
ID=22842774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82300136A Expired EP0056330B1 (de) | 1981-01-14 | 1982-01-12 | Federwickelmaschine mit Trennvorrichtung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0056330B1 (de) |
JP (1) | JPS57134226A (de) |
AT (1) | ATE15867T1 (de) |
BR (1) | BR8200144A (de) |
CA (1) | CA1167743A (de) |
DE (1) | DE3266585D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (1)
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 |
Family Cites Families (4)
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 |
US3934445A (en) * | 1974-06-24 | 1976-01-27 | Torin Corporation | Dual purpose spring coiling machine |
DE2826875C2 (de) * | 1978-06-19 | 1983-12-01 | Wafios Maschinenfabrik Wagner, Ficker & Schmid (GmbH & Co KG), 7410 Reutlingen | Verfahren und Maschine zum Herstellen von Schraubenfedern aus endlosem Draht durch Federwinden |
-
1981
- 1981-12-29 JP JP56216154A patent/JPS57134226A/ja active Granted
-
1982
- 1982-01-12 AT AT82300136T patent/ATE15867T1/de not_active IP Right Cessation
- 1982-01-12 EP EP82300136A patent/EP0056330B1/de not_active Expired
- 1982-01-12 DE DE8282300136T patent/DE3266585D1/de not_active Expired
- 1982-01-12 BR BR8200144A patent/BR8200144A/pt unknown
- 1982-01-13 CA CA000394090A patent/CA1167743A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
DE3266585D1 (en) | 1985-11-07 |
BR8200144A (pt) | 1982-11-03 |
ATE15867T1 (de) | 1985-10-15 |
EP0056330A2 (de) | 1982-07-21 |
JPS57134226A (en) | 1982-08-19 |
EP0056330A3 (en) | 1982-08-25 |
CA1167743A (en) | 1984-05-22 |
JPH0223253B2 (de) | 1990-05-23 |
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