EP2570206B1 - Profilwalzmaschine - Google Patents

Profilwalzmaschine Download PDF

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Publication number
EP2570206B1
EP2570206B1 EP12006191.6A EP12006191A EP2570206B1 EP 2570206 B1 EP2570206 B1 EP 2570206B1 EP 12006191 A EP12006191 A EP 12006191A EP 2570206 B1 EP2570206 B1 EP 2570206B1
Authority
EP
European Patent Office
Prior art keywords
blank
end point
machine according
rolling machine
rolling
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.)
Not-in-force
Application number
EP12006191.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2570206A1 (de
Inventor
Frank DÖDERLEIN
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 EP2570206A1 publication Critical patent/EP2570206A1/de
Application granted granted Critical
Publication of EP2570206B1 publication Critical patent/EP2570206B1/de
Not-in-force 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
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H9/00—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H9/00—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass
    • B21H9/02—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass for screw-rolling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • B21H3/065—Planetary thread rolling

Definitions

  • the invention relates to a profile rolling machine for rolling a profile in blanks, with a fixed and a movable die, as they are for. B. are used for the production of threads on blanks.
  • the rolling elements each have a negative of the desired profiling, so that thus z.
  • As knurls, threads, grooves o. ⁇ . Can be generated on the blank.
  • the blanks are conveyed through a suitable feeder and fed to the two dies, wherein the thread o. ⁇ .
  • By cold forming is applied by the movement of the movable die relative to the stationary mounted die on the blank disposed between the two blank.
  • a thread rolling machine with two relatively movable rolling dies for rolling a thread in blanks
  • a supply device for the blanks which comprises two guide means for individually and clocked feeding the blanks to an inlet point at both dies, said one guide means a Slide rail and the other has a circumferentially clocked driven transport belt, which is provided at its outer periphery with spaced-apart recesses for detecting each of a blank and for its transport along the slide in a formed between this and the transport belt transport gap.
  • the blanks are delivered directly from the feeder to the inlet point for the two roller cheeks, the observance of a precise time for a safe and defined introduction of the blanks is impossible because of the elasticity of the belt of the belt drive.
  • the respective blank can not be rolled directly under the head, since the belt feed must extend beyond the dies.
  • EP 2 095 892 A1 a profile rolling machine, in which the blanks supplied via a feed rail are pushed by means of a linear reciprocating insertion slide to the inlet point on both rolling jaws.
  • the insertion slider is driven by a rotary drive (servo motor) with an actuating lever and the feed of the blanks at an acute angle to the rolling direction.
  • the insert slide must perform a relatively large stroke because of its linear movement, which can lead to high accelerations and thus leadership and lubrication problems at high unit performance. Unfavorable is further that the drive is operated probably reversing or a spring return is provided.
  • the present invention seeks to propose a profile rolling machine of the type mentioned, which with a relatively simple design and at a precisely adjustable injection timing a non-time critical insertion movement for the blanks and also a relatively high unit performance without the occurrence of management and / or lubrication problems allowed.
  • the blanks are delivered tangentially to the rotating rolling jaw in a feed device, the blanks in this case already being aligned via corresponding devices of the feed device and in this orientation already being supplied in isolated form.
  • This advantageous state is utilized in the roll forming machine according to the invention in the supply of blanks to the inlet point on both rolling dies, without the orientation and separation of the blanks is lost.
  • the reciprocating movement of the Einsetzschiebers is not linear, but guided so that the lower end edge of the mounted on the front of Einsetzschiebers sliding surface, which serves to push each of a blank in the inlet point of the dies, a curved, closed trajectory goes through. This consists of a curved lower and an upper track section.
  • the lower track section which passes through the lower end edge of the front sliding surface of the Einsetzschiebers during its flow towards the inlet point to the roller jaws, has a bulge in the direction towards the slide out and runs in the end portion of the slide tangentially to its surface.
  • the lower end edge of the front sliding surface of the Einsetzschiebers moves back and forth along a teardrop-shaped, circumferentially closed trajectory.
  • the non-linear insertion movement of the insertion slide used in the invention causes the transport path for the next blank, which is ready in the feeder for transport to the inlet point, as soon as possible released by Einsetzschieber, so that a particularly rapid timing and thus a high Unit performance is achievable.
  • the roll forming machine according to the invention allows a completely unproblematic and non-time critical injection movement, is mechanically very simple structure, which is also here can realize a very rapid cycle without this lead to leadership and / or lubrication problems.
  • a movable rolling die is used in the form of a rotating rolling die.
  • the feed device is designed as a circulating transport belt with recesses mounted on its outer circumference for detecting a respective blank, wherein, again preferably, the recesses on the circumference of the transport belt for detecting the blanks during transport thereof along the slide rail in the same large distances from each other are attached.
  • a resiliently biased towards the movable rolling jaws retainer is mounted directly in front of the inlet of the rolling dies, which, as soon as a pushed from insert slide blank against him, for passing the same to the inlet point of the blank positively against the spring preload can be raised.
  • Such a retainer prevents tilting or unwanted retraction of the blank between the dies. Only by pressing the advanced from the insert slide blank against the retainer of this, against the spring bias, pushed back and releases the inlet into the inlet point at both dies.
  • the Einsetzschieber comprises a holder on which both sides of the conveyor belt each Ein structuralfinger is attached, each carrying a front sliding surface at its front in the transport direction of the blanks end, the sliding surfaces of both Ein structuralfinger in places Both sides of the feed device against the respective blank can be brought to bear.
  • the respective blank is moved during the next transport cycle on the rail to the dies, wherein the on both sides of the feed device acting on the blank impact fingers cause a particularly favorable guidance of the blank along the end region of the slide rail.
  • the insertion slide is attached to the lower end of a rotatably mounted holder having at its opposite upper end a laterally projecting cantilever, which is connected via a hinge with a coupling, which in turn at its opposite end to a Machine housing is firmly attached, with the holder in the middle between Insert slide and cantilever is mounted eccentrically on a drivable crankshaft.
  • the inventive leadership of the Einsetzschiebers can be realized with a straightforward kinematics with a relatively low cost, with such an arrangement works problem-free even with a very fast timing.
  • the coupling between the cantilever and the machine housing is formed so that it is adjustable in length.
  • the drive of the inlet slide is set at its return from the front to the rear end of the trajectory faster than the flow from the rear to the front end.
  • the drives of both the conveyor belt of the one guide device and the insert slide are preferably connected to a common central control.
  • the slide rail of a feed device extends as far as the inlet point of the two roll jaws, and runs there tangentially to the rotating rolling die.
  • the recesses are mounted on the circumference of the conveyor belt for detecting the blanks during transportation of the same along the slide at equal intervals from each other.
  • Fig. 1 shows a side view of a profile rolling machine 1, wherein the blanks 2 of metal (in the form of cylindrical pins) via a feed device 3 in a conveying direction A an insertion region 4 (see enlarged detail of the Fig. 2 ).
  • the push-in area 4 is connected downstream of the end of the feed device 3 and extends to an inlet point 5 (FIG. Fig. 2 ), at which the supplied blanks 2 between two dies, namely a fixed die 6 and a rotating die 7, are introduced and under the action of the rotating die 7 with support against the fixed die 6 a desired profile, such as a thread, on its outside is rolled.
  • the feed device 3 comprises a slide rail 8, which, in view of the illustration according to FIG Fig. 1 , one in Fig. 1 unrecognizable, upwardly slightly curved course.
  • the slide 8 is associated with a conveyor belt 9, as best seen in the illustrations of Fig. 5 to 8 can be removed.
  • a conveyor belt 9 Such as B. Fig. 5 shows, the slide rail 8 extends approximately tangentially to the rotating rolling die 7 almost to the inlet point 5, where the blanks 2 can enter between the dies 6 and 7.
  • the slide rail 8 is fixed, while the conveyor belt 9, as the Fig. 1 recognize, circulates endlessly and is thereby clocked driven.
  • the conveyor belt 9 is provided on its outside with outwardly open, equidistant recesses 10 as this Fig. 5 clearly shows.
  • a transport gap 13 is formed in the transport state ( Fig. 4 . 5 and 8th ), so that the slide rail 8 and the conveyor belt 9 do not touch each other. Only the blanks 2, which in each case protrude into a recess 10 of the conveyor belt 9, are supported on its opposite area on the surface of the slide rail 8 and glide along the surface of the slide rail 8 during the timed movement of the conveyor belt 9.
  • the feeder 3 the blanks 2 z. B. directly from a blank press or even from a delivery pot, in which the blanks are dropped, fed.
  • the transport of the blanks 2 in the feed device 3 takes place in the conveying direction A (see arrow in FIG Fig. 1 and 2 ) due to a corresponding direction of rotation of the conveyor belt.
  • the rolling jaws 6 and 7 are provided on their sides facing each with a negative of the desired profiling, so that knurls, grooves, threads o. ⁇ . Can be generated.
  • a plurality of so-called starting points are provided on the circumference of the rotating rolling jaw 7, which are points at which a thread begins, wherein the blanks 2 should ideally be introduced at these points.
  • a Einsetzschieber 14 is attached, which is provided at its front in the conveying direction A end with a sliding surface 15, with each of which he can move a blank 2 on the injection region 4 away to the inlet point 5 ("push") ,
  • the Einsetzschieber 14 is designed in the form of a double-angled lever, as shown in the figures, with reference being made to the shape of the Einsetzschiebers 14 shown therein expressly. Of course, other forms are for the Insert slide 14 possible, but the shape shown in the figures has proved to be particularly favorable for the roll forming machine 1 shown here.
  • the inserting slide 14 consists of a longer, rectilinear upper section 14A, which in turn is fastened to a rotatable holder 18 almost over its entire extent.
  • this rectilinear portion 14A is bent by 90 ° in the direction away from the holder 18 and forms there again a rectilinear, but shorter portion 14B, which at its projecting end again by 90 ° in the direction the fixed die 6 is bent down and there forms an end portion 14C, which also extends rectilinearly on its upper surface of the slide rail 8 side facing.
  • the insertion slide 14 fixed to the rotatable holder 18 is driven by a servomotor via a crankshaft 19 on which the holder 18 is eccentrically supported (eccentricity e).
  • the holder 18 is provided with a cantilever arm 20, which in turn, via a hinge 21, is connected to a coupling 22. This is in turn rotatably mounted on the machine housing 23 at its upper end.
  • the coupling 22 is, as in Fig. 3 shown, provided with a length adjustment 24 to allow by changing its length and a change in the movement profile of the Einsetzschiebers 14 and its sliding surface 15. Due to the mechanical coupling of the rotatable holder 18 to the coupling 22 and the crankshaft 19, the lower end edge 16 of the sliding surface 15 (see. Fig. 5 ) When turning the crankshaft 19, a teardrop-shaped, closed trajectory 25, the in Fig. 5 shown in solid, in the Fig. 6 to 8 however, only dash-dotted line is drawn.
  • the lower track section 29 represents the trajectory on which the lower end edge 16 of the front sliding surface 15 of the Einsetzschiebers 14 during its forward movement (flow) from the rear end point 27 passes through to the front end point 26, and in turn is curved toward the slide rail 8, wherein preferably the trajectory 25 is placed so that the lower track portion 29 opens tangentially in its front end point 26 toward the end portion on the surface of the slide 8 and there continues in the same direction with this to the front end point 26 out.
  • the upper track portion 28 may also be slightly curved, with its curvature directed in the direction of the slide rail 8 away.
  • the trajectory 25 is chosen so that during the flow of Einsetzschiebers 14, d. H. when the lower end edge 16 of its front sliding surface 15 is guided along the lower web portion 29, the sliding surface against the back of the front in the feeder 3 foremost blank 2 starts and this with continued movement of Einsetzschieber 14 and conveyor belt 9 to the Einhyroid Schlt 4 and therethrough pushes to the inlet point 5, while the return of the Einsetzschiebers 14 whose end edge 16 along the upper web portion 28 is guided so that there is always a distance between it and the front in the feeder 3 blank 2, d. H. the return movement of Einsetzschiebers 14 to the front end point of its trajectory 25 relative to this blank 2 runs collision-free, since this end edge 16 is always the lowest point of Einsetzschiebers 14 during the return.
  • the upper web portion 28, which is determined by the kinematics of the lever guide of the Einsetzschiebers 14 is thus chosen so that it ensures a collision-free return of the Einsetzschiebers 14 relative to the foremost blank 2 in the feeder 3, so to speak on the return above this foremost Blank 2 lifted over.
  • the forward movement of the front sliding surface 15 of the Einsetzschiebers 14 is tuned to the clocked feed movement of the conveyor belt 9, in such a way that at the time at which the forward moving front sliding surface 15 of the Einsetzschiebers 14 against the back of the foremost blank 2 comes to the plant, also the forward movement the next cycle of the conveyor belt 9 expires, so that until it runs out of the foremost blank 2 from him receiving recess 10 of the conveyor belt 9, when the latter is pivoted away by the guide roller 11 upwards, always a system of the front sliding surface 15 at the back of the blank 2 given and the speed of both movements is coordinated. As soon as the blank 2 has then run out of the recess 10 and entered the push-in area 4, it is pushed further there towards the front end point 26 of the curve 25 from the sliding surface 15 at the front end of the insertion slide 14.
  • the return movement of the Einsetzschiebers 14 corresponding to the upper track section 28 until reaching the rear end point 27 and the subsequent transition in the forward movement corresponding to the lower track section 29 is designed so that only when the front sliding surface 15 against the back of the present there foremost Blanks 2 uses the clocked forward movement of the conveyor belt 9.
  • FIG. 6 shows a position in which the Einsetzschieber 14 is located with its front sliding surface 15 at the rear end point 27 of the trajectory 25, thus a reversal of movement takes place from the return movement in the forward movement is in Fig. 7 shown the state in which the Einsetzschieber 14 with its front sliding surface 15 just the blank 2 against an inclined lower end face of the inlet point 5 immediately upstream, in the direction of the rotating die 7 spring biased retainer 17 presses and this form-fitting against its spring bias upwards pushes until the blank 2 has passed under the retainer 17 and entered the inlet point 5 between the roller jaws 6 and 7.
  • Fig. 8 shows in which case the front sliding surface 15 of the Einsetzschiebers 14 has reached the front end point 26 of the trajectory 25.
  • FIG. 4 shows a plan view of the front deflection of the conveyor belt 9 and the front end of the feeding device 3 and the Einsetzschieber 14, at its front sliding surface 15 just a blank 2 below the lower end surface of the retainer 17 immediately before the inlet point 5 on the roller jaws. 6 and 7 has pushed.
  • Fig. 4 shows that the rotatably mounted holder 18 which is eccentrically driven by the crankshaft 19, at its lower end portion comprises two U-shaped side legs 31 and 32, each of which is arranged on one side of the conveyor belt 9, such as Fig. 4 good shows.
  • each of these side legs 31, 32 is a separate Einsetzschieber in the form of a respective Ein arrangementfingers 33 and 34 are mounted, each of which is formed in the side view as this Fig. 3 represents.
  • the two injection fingers 33 and 34 each have at their front end a separate sliding surface, the sliding surfaces of both injection fingers 33 and 34 total make up the sliding surface, which is effective for transporting the respective blank 2.
  • the timing can be chosen so that the in the feeder 3 foremost blank 2 is already spent in the return of Einsetzschiebers 14 and the Ein anatomyfinger 33 and 34 in its foremost feed position, whereby the profile rolling machine 1 with a large unit performance can be operated.
  • a rotating die 7 instead of the latter, however, a rolling jaw could equally be used, which is moved linearly and not rotating.
  • another suitable feed device could be used, such.
  • a screw conveyor as shown in the WO 2008/074321 A1 is known. It is also understood that the drive of the conveyor belt 9 as well as the Einsetzschiebers and the movable die 7 is connected to a common, not shown in the figures central control.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
EP12006191.6A 2011-09-13 2012-08-31 Profilwalzmaschine Not-in-force EP2570206B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011113250A DE102011113250B3 (de) 2011-09-13 2011-09-13 Profilwalzmaschine

Publications (2)

Publication Number Publication Date
EP2570206A1 EP2570206A1 (de) 2013-03-20
EP2570206B1 true EP2570206B1 (de) 2014-01-22

Family

ID=46826207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006191.6A Not-in-force EP2570206B1 (de) 2011-09-13 2012-08-31 Profilwalzmaschine

Country Status (4)

Country Link
EP (1) EP2570206B1 (ko)
KR (1) KR101451825B1 (ko)
DE (1) DE102011113250B3 (ko)
DK (1) DK2570206T3 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101727053B1 (ko) 2015-02-03 2017-05-02 한국기계연구원 스프레이 코팅유닛 및 이를 이용한 코팅시스템
EP3609634B1 (de) 2017-04-10 2022-04-27 KAMAX Holding GmbH & Co. KG Mehrstückiges rollwerkzeug mit schwimmender lagerung und rollmaschine
CN109013989B (zh) * 2018-08-01 2024-05-03 海盐龙晟科技股份有限公司 滚丝机的自动上料装置
CN114029433A (zh) * 2021-11-18 2022-02-11 东风汽车紧固件有限公司 一种特殊螺栓搓丝方法及其搓丝机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733867A (en) * 1972-02-14 1973-05-22 Prutton Corp Thread rolling machine
US4088045A (en) * 1976-12-06 1978-05-09 The Hartford Special Machinery Company Planetary work forming machine having improved starter timing control and starter drive selector
US4195508A (en) * 1978-10-05 1980-04-01 Prutton Corporation Adjustably timed thread roll machine
US4472956A (en) * 1982-06-28 1984-09-25 Sigma Tool & Machine Limited Apparatus for feeding elongated objects
JP3119876U (ja) * 2005-11-25 2006-03-16 株式会社阪村機械製作所 ねじ転造装置
US8015854B2 (en) * 2006-12-19 2011-09-13 Enkotec A/S Mechanism for feeding blanks to be threaded into a thread rolling machine
EP2095892A1 (de) * 2008-02-27 2009-09-02 E. W. Menn Gmbh & Co. Kg Profilwalzmaschine
WO2011023359A1 (de) * 2009-08-26 2011-03-03 E.W. Menn Gmbh & Co. Kg Gewindewalzmaschinen mit zuführvorrichtung

Also Published As

Publication number Publication date
KR101451825B1 (ko) 2014-10-16
DE102011113250B3 (de) 2012-11-15
DK2570206T3 (en) 2014-03-24
KR20130029032A (ko) 2013-03-21
EP2570206A1 (de) 2013-03-20

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