EP2239067A1 - Machine de fabrication de ressorts - Google Patents

Machine de fabrication de ressorts Download PDF

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Publication number
EP2239067A1
EP2239067A1 EP10001364A EP10001364A EP2239067A1 EP 2239067 A1 EP2239067 A1 EP 2239067A1 EP 10001364 A EP10001364 A EP 10001364A EP 10001364 A EP10001364 A EP 10001364A EP 2239067 A1 EP2239067 A1 EP 2239067A1
Authority
EP
European Patent Office
Prior art keywords
wire
mandrel
manufacturing machine
spring manufacturing
machine according
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
EP10001364A
Other languages
German (de)
English (en)
Other versions
EP2239067B1 (fr
Inventor
Walter Maier
Andreas Sigg
Stefan Jetter
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.)
Wafios AG
Original Assignee
Wafios AG
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 Wafios AG filed Critical Wafios AG
Publication of EP2239067A1 publication Critical patent/EP2239067A1/fr
Application granted granted Critical
Publication of EP2239067B1 publication Critical patent/EP2239067B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21F35/00—Making springs from wire
    • B21F35/02—Bending or deforming ends of coil springs to special shape
    • 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
    • B21F3/027—Coiling wire into particular forms helically with extended ends formed in a special shape, e.g. for clothes-pegs

Definitions

  • the invention relates to a spring manufacturing machine with a machine frame on which a wire intake and a wire guide for feeding a wire in a feed direction, further downstream of the wire guide, perpendicular to the supplied wire both in the height direction and in the direction perpendicular to the machine frame movable mandrel and according to this a parallel to the wire feed direction as well as in two mutually and in each case to the wire feed direction movable directions movable forming tool are mounted.
  • the machines with 2-finger system are in turn suitable only for the production of pure coil springs without angled legs, since the wire always remains positioned after a single start in the wire guide grooves of the wind finger.
  • 2-finger system larger quantities and more accurate spring geometries than with the 1-finger system can be produced.
  • the present invention seeks to improve a spring coiling machine, which is normally suitable only in the 2-finger system for producing pure coil springs (compression springs), so that they are also used for the production of simple leg springs in 1-finger system can.
  • the mandrel has a wire guide channel which is formed in the mandrel at a distance from the machine frame facing away from the outer side wall, through which the wire is fed through the mandrel to the forming tool, and the mandrel further comprises an opening for insertion of the wire into the wire guide channel.
  • the mandrel in a direction perpendicular to the wire feed direction plane both in the top-bottom, as well as in the front-back is movable, and by the use of a in two mutually and each to the wire feed direction movable directions forming tool ( "3D -Windefinger " ) is in addition to the winds and the bending of the wire in any direction (top-bottom, front-back) feasible.
  • the production of bent forward legs can be done without the use of additional tool units or tool shifters.
  • the possibility of producing high-precision springs with high unit performance in the 2-finger wind method is maintained.
  • a conventional spring coiling machine which operates on the 2-finger system, can be easily converted to the 1-finger system.
  • the exchange of the forming unit, the dome unit and possibly the cutting blade and the wire guide can increase the overall product range producible on the machine quite considerably.
  • the economic benefits achieved by the invention are particularly remarkable.
  • the wire guide channel is most preferably formed in the form of a guide groove, which, again preferably, has a groove depth which corresponds at least to the diameter of the supplied wire, so that it does not protrude from it as it passes through the guide groove.
  • This offers the possibility of executing the wire feed channel also with a closed cross-section, which can be opened to form the opening for inserting the wire in a suitable manner.
  • the wire guide channel in the form of a guide groove with a non-closed, but unilaterally open cross-section formed, it is particularly advantageous if the guide groove on its side facing away from the machine frame side legs extending from one end perpendicular to the longitudinal center plane of the wire guide channel and parallel to the wire feed direction plane boundary wall is connected to the outer side wall of the dome, wherein preferably this planar boundary wall, perpendicular to the wire feed direction, has a width which is greater than the wire diameter.
  • a further advantageous embodiment of the invention also consists in that the opening for inserting the wire into the wire guide channel runs directly next to the boundary wall and extends over the entire length of the dome in the wire feed direction.
  • this opening has an opening perpendicular to the plane boundary wall, which corresponds to the wire diameter or slightly larger than this, so that from the outside easy passage of the wire through the opening and its insertion into the wire guide channel is easily possible.
  • the wire guide channel is formed as a guide, whose configuration so made that the longitudinal center plane of the guide extends perpendicular to the flat boundary wall.
  • the mandrel is constructed in two parts and comprises an upper and a lower mandrel section.
  • Both mandrel sections for creating the opening for inserting the wire into the wire guide channel are preferred from a closed position in which the wire guide channel formed in one of the two mandrel sections and open towards the parting surface between the two mandrel sections is completely covered and closed by the other mandrel section opened position in which the wire guide channel is opened and the opening for inserting the wire is formed in it between two mandrel portions.
  • the possibility is created to form the opening for inserting the wire in the wire guide channel only if the wire from the wire guide channel out or in this is to be introduced, but otherwise by juxtaposing the two mandrel sections for Wire guide to have a closed channel cross-section, which is often preferable to the open configuration of the wire guide channel in the context of a one-sided always open guide.
  • a preferred embodiment is also the two mandrel sections about a common hinge pivot each other and form scissor-shaped hinged, so that the creation of the opening for insertion (or lead out of the wire), the two mandrel sections can be opened and thus the desired access to the wire guide channel is created. After the insertion or removal of the wire, however, the two mandrel sections are closed again and thus again a closed wire guide channel is reached.
  • both mandrel sections for receiving the open position while maintaining their orientation, thus aligned parallel to each other, are movable apart.
  • a further preferred embodiment of the spring manufacturing machine according to the invention also consists in that the mandrel additionally a circular arc-shaped bending surface is formed to the bending system of the supplied wire whose axis of curvature is perpendicular to the feed direction of the wire, wherein, preferably, the bending surface in a direction perpendicular to the longitudinal center plane of the wire guide channel attached to the spine.
  • the bending axis of the bending surface is advantageously placed so that it is either perpendicular or parallel to the longitudinal center plane of the wire guide channel.
  • a very particularly preferred embodiment of the invention consists in the fact that in two-part design of the dome, when both parts from a closed to an open position (and vice versa) are brought, the depth of the guide is chosen slightly smaller than the diameter of the wire and also the mandrel portions comprehensive mandrel also in the feed direction of the wire (and in the opposite direction) is movable.
  • the mandrel can also be used as a gripper for the wire at the same time, which is held clamped in the closed position of both mandrel sections between them.
  • the invention also relates to a mandrel with the features described above for use in a spring manufacturing machine of the aforementioned type.
  • Fig. 1 shows in a perspective front view of a spring manufacturing machine 1, which operates with the 1-finger system. It consists essentially of a machine frame 2 (shown only in principle), at the front side (also shown only in principle), a straightening unit 3, a wire feed 4, a wire guide 5, a mandrel unit 6, a forming unit 7, a pitch device 8 and a cutting unit 9 are arranged.
  • the pitch device 8 is known per se; it makes it possible to generate a correspondingly desired pitch between the individual turns of the spring by moving outward (perpendicular to the wire axis and perpendicularly away from the machine frame 2 to the front).
  • the mode of action and the use of such inclining devices is known to the person skilled in the art, so that it is not necessary to discuss them further here.
  • At the machine position 2 are further two horizontal slide 12, namely an upper and a lower horizontal slide mounted, which can be moved independently of one another parallel to the wire feed direction s in the direction t u , t 0 .
  • each forming slide 13 is equipped at its front end with a forming tool 15, while in the in Fig. 1 shown, converted to 1-finger system spring manufacturing machine 1 only at the lower Umformschieber 13 a forming tool 15 is mounted on an adapter plate 22.
  • the forming tool is a 3D wind finger 23 (also called a "leg spring device " ), which serves as the forming unit 7 here.
  • the 3D Windefinger 23 has on its the dome unit 6 end face facing a guide groove 28 for receiving, guiding and deflection of the wire 10 (see. FIGS. 9 and 10 ).
  • the (upper) Umformschieber 13 of the 2-finger system which is not required for 1-finger conversion, is removed during the conversion to the 1-finger system or moved to a retracted position in which it remains.
  • the forming mandrel 16 is fastened in a mandrel box 17 (compare the enlarged detail of the forming area in FIG Fig. 2 ), which in turn is slidably inserted into a mandrel carriage 18.
  • the mandrel carriage 18 is vertically (perpendicular to the wire 10) in the w- direction movable, so that the forming mandrel 16 can always be positioned directly on the already wound wire.
  • the mandrel box 17 in turn is in the x- direction forward and backward (also perpendicular to the wire 10) movable, both traversing directions in Fig. 2 indicated by arrows.
  • a knife 21 for separating a spring produced (if it is worked in the 2-finger system) is provided.
  • a knife 21 is used only at the upper cutting gate 20, which is designed so that it separates the wire directly at the outlet 25 of the wire guide 5 (see Fig. 3 ).
  • a counter blade 30, which can be applied to the wire guide 5 from below, is provided on the lower cutting slide 20.
  • the wire 10 may also by the movement of Domech 6 in w - or x direction between the forming mandrel 26 and guide wire 5 are separated, for which purpose special edge formations are provided on the forming mandrel 26 and the wire outlet 25 (not shown in the figures).
  • the 3D wind finger 23 is oriented substantially parallel to the wire feed direction s and can be moved in the direction of travel v in the wind plane via the movements of the two horizontal slides 12 in the direction of movement t o , t u or via the movement of the forming slide 13.
  • Via an additional drive 24 ( Fig. 1 ) is also an additional movement of the 3D Windefingers 23 perpendicular to the wind plane in the direction y (pivoting) possible.
  • the forming tool 15 of the 3D Windefingers 23 can be arbitrarily positioned to the wire outlet 25 of the wire guide 5 or moved around a wire 10 protruding therefrom and then attack them from above, below, behind or front (see also Fig. 3 ).
  • Fig. 3 shows in detail, which is expressly referred to, in the lower mandrel portion 16b an upwardly open guide groove 27 is formed, which is parallel to the wire feed direction s and in cross-section the wire diameter d (see. Fig. 7 and 9) is adapted.
  • the guide groove 27 is on its side facing away from the machine frame 2 side of the local outer surface 31 of the lower mandrel portion 16b separated by a nose 29, the z. B. the production of a bent forward leg of a spring allows (see also the illustration of FIGS. 9 and 10 or the Figs. 11A to 11K ).
  • a flat boundary wall 32 is formed, which constitutes the upper boundary surface of the nose 29 and connects the upper end of the outer side leg of the guide groove 27 with the outer surface 31 of the lower mandrel portion 16 b.
  • the width B of the upper boundary wall 32 is, as well Fig. 6 (left illustration) recognizable, larger than the diameter of the wire.
  • the depth T of the guide groove 27 is slightly larger than the diameter of the wire.
  • the lower surface of the upper mandrel portion 16a projects beyond the guide groove 27 in the lower mandrel portion 16b by projecting over the upper surface of the latter toward the front.
  • the upper mandrel portion 16a is also provided with a rounded, in particular arcuate curved portion 35, with which the supplied wire 10 can be bent in a corresponding plane.
  • the arcuate bending surface 35 used here could also be attached to the forming mandrel 16 in a different orientation, such that the axis of curvature A of the bending surface 35 in the longitudinal center plane MM (see FIG. Fig. 7 ) of the guide groove 27 or offset parallel to this.
  • the bending axis A of the curvature surface 35 is perpendicular to the wire feed direction s and perpendicular to the machine frame 2 (ie parallel to the axis x ).
  • the bending surface 35 extends as such Fig. 3 shows, circular over about a quarter of a quadrant, so runs almost the entire length L of Urnformdornes 16, seen in Drahtzu slaughter s , and indeed at the front end portion of the upper mandrel portion 16a, as well as in Fig. 6 is shown.
  • This opening 46 which extends over the entire length L of the forming mandrel 16 (viewed in the wire feed direction s ) has at its narrowest cross section, which is at the beginning of the length L directly adjacent to the outlet 25 of the wire guide 5, a width h, the so is great that the conveyed wire 10, taking into account its diameter d introduced from the outside into it and then introduced into the guide groove 27, all this required relative movements by the movement of the mandrel 16 in the directions w and x of the dome 16 relative to the wire 10 can be performed.
  • Fig. 4 to 8 show, seen in schematic view from the front of the mandrel 16 forth against the Drahtzu Foodurgi s , representations of different embodiments of the mandrel 16. Here are indicated by dotted lines possible positions of the wire 10 for bending and with arrows possible bending directions.
  • Fig. 4 a one-piece design of Urnformdornes 16 is shown, in which an L-shaped channel 33 is recessed, which opens at the outside of the forming mandrel 16 in the opening 46 through which a wire inserted and in the up here, the guide groove 27 forming Leg of the channel 33 can be introduced. Dash-dotted different positions of a introduced into the channel 33 wire are shown, for each of these different wire positions are indicated by small arrows, the possible bending directions.
  • Fig. 5 shows a similar mandrel 16, but here is formed in two parts with an upper mandrel portion 16a and a lower mandrel portion 16b.
  • the upper illustration shows a view like the one in Fig. 1
  • the lower diagram shows a top view of the lower mandrel section 16b from above (with the upper mandrel section 16a removed).
  • the two mandrel sections 16a and 16b together again form an L-shaped channel 33, in which this time, however, the leg of the L-shaped channel 33 forming the guide groove 27 runs downwards.
  • the guide groove 27 is, viewed in the insertion direction of the wire, a rounded portion 35 'upstream of a bending surface, the bending axis parallel to the longitudinal center plane MM (see. Fig. 7 ) of the guide groove 27 is located and simplifies the winding of spring bodies.
  • Fig. 6 also shows a two-part forming mandrel 16 having an upper mandrel portion 16a and a lower mandrel portion 16b. In this embodiment, it is the same as in the Fig. 1 to 3 as well as 9 to 11 K is shown.
  • the bending portion with the circular bending surface 35 is rounded upwards as is Fig. 3 or the FIGS. 9 and 10 is well apparent, with the right representation of the Fig. 6 shows the front view of the upper mandrel section 16a (view from the left in the left-hand illustration).
  • FIGS. 7 and 8 now each show two-part forming mandrels 16 with closing function:
  • the upper mandrel portion 16a and the lower mandrel portion 16b are pivotable relative to each other about an axis of rotation 36 (via a mechanism not shown).
  • the closed position (left illustration of the Fig. 7 ) is the wire in a wire guide channel 27 with a closed cross-section, so that the wire is completely enclosed in this closed position of the mandrel 16 as it passes through it.
  • the upper mandrel portion 16a overlaps on its outside (in Fig. 7 : left) with a downwardly projecting nose 37, the outer surface 31 of the lower mandrel portion 16 b, in which the guide channel 27 is formed.
  • the lugs 37 and 29 are based in the closed position of the mandrel 16 mutually outwardly, whereby increased rigidity when bending forward (ie, to the left in Fig. 7 ) is achieved.
  • FIG. 8 Finally, another embodiment of a two-part forming mandrel 16 is shown, again left in the closed and right in the open position.
  • the upper mandrel portion 16a and the lower mandrel portion 16b are in the open position (right-hand illustration in FIG Fig. 8 ) no longer connected. Rather, to create the opening 46 for access into the guide groove 27, the two mandrel portions 16 a and 16 b in parallel, in unaltered relative orientation to each other, moved apart, which also by simple mechanisms (such as toggle, spreaders or a Curve control, but also by motor drives, not shown in the figure) can be made and the skilled person a suitable mechanism or drive is familiar.
  • the upper mandrel portion 16a is composed of two interconnected members 38 (mandrel member 1) and 39 (mandrel member 2).
  • This can z. B. a rounded bending surface 35 "o. ⁇ . Also be realized in a center piece of the mandrel 16.
  • the construction of the forming mandrel 16 in a multi-part form simplifies the production of the individual mandrel parts 16a, 16b, 38 and 39, respectively, and allows the shape of the channel 33 or the forming surfaces 28 and 35 to be changed by exchanging one of the mandrel sections 16a, 16b or a mandrel part 38 and 39 respectively.
  • movable mandrel sections of the mandrel 16 of the FIGS. 7 and 8 can also be designed as a gripper, which can grip and position the wire 10, a leg or the spring body, which results in a further possibility of using such a mandrel unit.
  • the forming mandrel 16 is also made movable in the feed direction s of the wire and the depth T of the guide groove 27 is chosen slightly smaller than the wire diameter d to 16a and 16b in the closed position of both mandrel sections to achieve a retention of the wire between them.
  • the installation direction of the guide channel 27, namely z. B. upwards (as in Fig. 4 ) or down (as in FIGS. 5 and 6 ), is arbitrary and depending on the application or desired spring shape individually selectable.
  • FIGS. 9 and 10 show the forming elements Fig. 3 in a state of bending a forward leg 40 from two different perspectives: Fig. 9 shows a perspective view obliquely from the front, while Fig. 10 is a perspective view of the arrangement obliquely from behind.
  • the wire 10 runs in the guide groove 27 and is bent over a corresponding recess 41 on the forming tool 15 during a movement thereof forward on the nose 29.
  • the Figs. 11A and 11B show a state in which the wire 10 has been transported beyond the forming mandrel 16 by the wire guide 5 and the guide groove of the lower mandrel portion 16b.
  • a movement of the forming tool 15 in the direction of the forming mandrel 16 and from top to bottom (movements along the axes of movement t and v) of the wire 10 at the rear edge of the forming mandrel 16 (namely at its lower mandrel portion 16 b) is bent and thus a first angled leg 44 made.
  • the forming tool 15 is moved away to the right of the wire 10, guided around the rear of this, lowered and placed on the wire 10 again from below.
  • the wire 10 has been advanced for a further distance, the forming mandrel 16 is lowered and moved backwards to apply the rounded bending surface 35 to the wire 10 (position according to FIGS Figs. 11C and 11D ).
  • a spring body 47 is generated by winds.
  • the pitch device 8 can be moved perpendicular to the wire +10 to create the spacing between the individual turns. This condition is in the Figs. 11E and 11F shown.
  • the forming tool 15 is moved away from the wire 10, guided around the rear around this and positioned from behind in the interior of the spring body 47. Now, the second leg 44 is bent by activating the wire feed and subsequent lowering of the forming tool 15. This turn can either again (as at the beginning) take place in the guide groove 27 of the forming mandrel 16 or on the nose 29 (see. Figs. 11G and 11H ).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Springs (AREA)
EP10001364A 2009-04-07 2010-02-10 Machine de fabrication de ressorts Active EP2239067B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009016768A DE102009016768B3 (de) 2009-04-07 2009-04-07 Federherstellungsmaschine

Publications (2)

Publication Number Publication Date
EP2239067A1 true EP2239067A1 (fr) 2010-10-13
EP2239067B1 EP2239067B1 (fr) 2011-04-27

Family

ID=42269636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10001364A Active EP2239067B1 (fr) 2009-04-07 2010-02-10 Machine de fabrication de ressorts

Country Status (6)

Country Link
EP (1) EP2239067B1 (fr)
JP (1) JP5255582B2 (fr)
CN (1) CN101856704B (fr)
AT (1) ATE507020T1 (fr)
DE (2) DE102009016768B3 (fr)
TW (1) TW201039940A (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN104070124A (zh) * 2014-06-30 2014-10-01 安庆谢德尔汽车零部件有限公司 一种防抖动弹簧钢丝导轨

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CN102172743A (zh) * 2010-12-24 2011-09-07 浙江机电职业技术学院 卷簧机芯刀结构
CN102626761B (zh) * 2012-01-04 2014-06-04 杭州钱江弹簧有限公司 一种扭簧成型工艺
CN103861974A (zh) * 2014-03-18 2014-06-18 沈阳飞机工业（集团）有限公司 特型弹簧制造工装及特型弹簧制造工艺
CN104057001B (zh) * 2014-06-30 2016-08-17 安庆谢德尔汽车零部件有限公司 一种多弧形弹簧钢丝导轨
CN105618636B (zh) * 2016-01-25 2018-12-28 南京艾驰电子科技有限公司 一种产生合金丝韦根效应的方法及其装置
CN107570634B (zh) * 2017-09-04 2024-08-16 珠海市赛科自动化有限公司 一种医用导丝绕线机
JP7258545B2 (ja) * 2018-12-28 2023-04-17 日本発條株式会社 コイリングマシンと、コイルばねの製造方法
DE202019106145U1 (de) 2019-11-05 2019-11-26 Wafios Aktiengesellschaft Umformmaschine mit Schutzvorrichtung

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US1882243A (en) * 1932-04-16 1932-10-11 William O Dailey Apparatus for forming and bending flexible materials
US4873854A (en) * 1987-10-30 1989-10-17 Sleeper & Hartley Corp. Computer controlled coiling machine
US20080264132A1 (en) * 2006-12-20 2008-10-30 Shinko Machinery Co., Ltd. Spring manufacturing machine

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US1882243A (en) * 1932-04-16 1932-10-11 William O Dailey Apparatus for forming and bending flexible materials
US4873854A (en) * 1987-10-30 1989-10-17 Sleeper & Hartley Corp. Computer controlled coiling machine
US20080264132A1 (en) * 2006-12-20 2008-10-30 Shinko Machinery Co., Ltd. Spring manufacturing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104070124A (zh) * 2014-06-30 2014-10-01 安庆谢德尔汽车零部件有限公司 一种防抖动弹簧钢丝导轨
CN104070124B (zh) * 2014-06-30 2016-10-05 安庆谢德尔汽车零部件有限公司 一种防抖动弹簧钢丝导轨

Also Published As

Publication number Publication date
EP2239067B1 (fr) 2011-04-27
TWI377097B (fr) 2012-11-21
DE102009016768B3 (de) 2010-09-23
DE502010000019D1 (de) 2011-06-09
CN101856704A (zh) 2010-10-13
TW201039940A (en) 2010-11-16
JP2010240738A (ja) 2010-10-28
ATE507020T1 (de) 2011-05-15
JP5255582B2 (ja) 2013-08-07
CN101856704B (zh) 2013-06-05

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