Claims (10)
1. Fremgangsmåde til bukning af stangformet materiale, hvor et stangmateriale tilføres et bukkeværktøj ved hjælp af ifemføringsorganer, hvor stangmaterialet bukkes til elementer ved hjælp af bukkeværktøjet, hvor stangmaterialet fremføres gennem et retteværk bestående af to rækker af rettevalser med periferiske kanalspor til optagelse og styring af stangmaterialet, hvor rettevalseme i den ene række trykkes mod stangmaterialets ene side, og hvor rettevalseme i den anden række trykkes mod stangmaterialets diametralt modsatte side, hvilke rettevalser er anbragt med indbyrdes mellemrum med rettevalserne i den ene række anbragt ud for mellemrum mellem rettevalseme i den anden række og sådan i forhold til hinanden, at stangmaterialet, med rettevalseme placeret i en neutralstilling, tvinges til at passere disse efter en retliniet bane i et midterplan for kanalsporene, kendetegnet ved forskydning af i det mindste en del af rettevalseme med forskellig afstand i forhold til deres neutralstilling samt fastholdes efter forskydningen til dannelse af en krummet bane for stangmatcrialcts passage mellem de to rækker, hvilken krummet bane forløber i kanalsporenes midterplan.A method of bending rod-shaped material, wherein a rod material is applied to a bending tool by means of feeder means, wherein the rod material is bended to elements by means of the bending tool, wherein the rod material is fed through a straightener consisting of two rows of straight rollers with peripheral channel grooves for receiving and guiding. the rod material, where the straightening rollers in one row are pressed against one side of the rod material and where the straightening rolls in the other row are pressed against the diametrically opposite side of the rod material, which straightening rollers are spaced apart with the straightening rollers in one row spaced apart between the straightening rollers in the other row and such in relation to each other that the rod material, with the straightening rollers placed in a neutral position, is forced to pass these along a straight line in a center plane of the channel grooves, characterized by displacement of at least a portion of the straightening rollers at different distances relative to dere s neutral position and is retained after the displacement to form a curved path for the rod matrial passage between the two rows, which curved path extends in the median plane of the channel grooves.
2. Fremgangsmåde ifølge krav 1, kendetegnet ved, at i det mindste en del af rettevalseme, der er placeret nedenstrøms for de forskudte rettevalser fastholdes, i deres neutralstilling for dannelse af en retlinet bane for stangmaterialet i retteværkets nedenstrøms del.Method according to claim 1, characterized in that at least a portion of the straightening rollers located downstream of the displaced straightening rollers are held in their neutral position to form a straight web for the rod material in the downstream part of the straightening piece.
3. Fremgangsmåde ifølge krav 1 eller 2, kendetegnet ved, at forskydningen etableres ved en rotation af de individuelle rettevalser om en ekscentrisk aksel, idet rotation foretages gennem forskellige vinkler for etablering af individuel forskydning af rettevalseme.Method according to claim 1 or 2, characterized in that the displacement is established by rotating the individual straightening rollers about an eccentric shaft, rotating through different angles for establishing individual displacement of the straightening rollers.
4. Apparat til bukning af stangformet materiale og omfattende Ifemføringsorganer for tilfø-ring af et stangmateriale til et bukkeværktøj, hvor stangmatcrialct bukkes til elementer, et retteværk, hvor stangmaterialet fremføres gennem og bestående af to rækker af rettevalser med periferiske kanalspor til optagelse og styring af stangmaterialet, idet rettevalseme i den ene række trykkes mod stangmaterialets ene side, og hvor rettevalseme i den anden række trykkes mod stangmaterialets diametralt modsatte side, hvilke rettevalser er anbragt med indbyrdes mellemrum med rettevalseme i den ene række anbragt ud for mellemrum mellem rettevalseme i den anden række og sådan i forhold til hinan- den, at stangmaterialet, med rettevalseme placeret i en neutralstilling, tvinges til at passere disse efter en retliniet bane i et midterplan for kanalsporene, kendetegnet ved, at apparatet omfatter forskydningsorganer til forskydning af rettevalseme, og at i det mindste en del af rettevalseme er indrettet forskydeligt i forhold til deres neutralstilling til dannelse af en krummet bane for stangmaterialets passage mellem de to rækker, hvilken krummet bane forløber i kanalsporenes midterplan.An apparatus for bending rod-shaped material and comprising feeder means for supplying a rod material to a bending tool, wherein rod material is bent into elements, a straightening device in which the rod material is advanced through and consisting of two rows of straight rollers with peripheral channel grooves for receiving and controlling the straightening material, the straightening rollers in one row being pressed against one side of the rod material, and the straightening rollers in the other row being pressed against the diametrically opposite side of the rod material, which straightening rollers are spaced apart with the straightening rollers in one row spaced apart between the straightening rollers in the other series and such relative to each other that the rod material, with the straightening rollers placed in a neutral position, is forced to pass these along a straight line in a center plane of the channel grooves, characterized in that the apparatus comprises shear means for displacing the straightening rollers, and at least part of the straight rollers is arranged displaceable relative to their neutral position to form a curved path for the passage of the rod material between the two rows, which curved path extends in the median plane of the channel grooves.
5. Apparat ifølge krav 4, kendetegnet ved, at i det mindste en del af rettevalseme, der er placeret nedenstrøms for de forskudte rettevalser, er fastholdt i deres neutralstilling for dannelse af en retlinet bane for stangmaterialet i retteværkets nedenstrøms del.Apparatus according to claim 4, characterized in that at least a portion of the straightening rollers located downstream of the displaced straightening rollers are held in their neutral position to form a straight web for the rod material in the downstream portion of the straightening.
6. Apparat ifølge krav 4 eller 5, kendetegnet ved, at forskydningsorganeme omfatter en ekscentrisk aksel, der understøtter rettevalseme, og som er forbundet med en aktuator til individuel rotation af en tilknyttet ekscentrisk aksel, idet rotationen for de forskellige rettevalser foretages gennem forskellige vinkler for etablering af individuel forskydning af rettevalseme.Apparatus according to claim 4 or 5, characterized in that the shear members comprise an eccentric shaft which supports the straightening rollers and which is connected to an actuator for individual rotation of an associated eccentric shaft, the rotation of the different straightening rollers being carried out at different angles for establishing individual displacement of the straightening rollers.
7. Apparat ifølge krav 6, kendetegnet ved, at forskydningsorganeme omfatter yderligere forskydningsorganer, der kan forskyde rettevalseme i den ene række i forhold til valserne i den anden række i nævnte midterplan for etablering af forskellig afstand mellem rettevalserne i de to rækker.Apparatus according to claim 6, characterized in that the shear means comprise additional shear means which can displace the straightening rollers in one row with respect to the rollers in the second row in said central plane for establishing different distances between the straightening rollers in the two rows.
8. Apparat ifølge krav 6 eller 7, kendetegnet ved, at forskydningsorganeme for hver ekscentrisk aksel omfatter en arm, der er fastmonteret på en tilknyttet ekscentrisk aksel, og som er drejeligt forbundet med en fælles bjælke, som er forbundet med en aktuator, der etablerer rettevalsemes forskydning mellem en neutralstilling og en forskudt stilling til dannelse af den krumme bane.Apparatus according to claim 6 or 7, characterized in that the shear members for each eccentric shaft comprise an arm mounted on an associated eccentric shaft and pivotally connected to a common beam connected to an actuator which establishes the displacement of the straight rollers between a neutral position and an offset position to form the curved web.
9. Apparat ifølge krav 6 og 7, kendetegnet ved, at de yderligere forskydningsorganer omfatter individuelle aktuatorer, som er monteret mellem den fælles bjælke og armene for de ekscentriske aksler for rettevalseme i den ene række.Apparatus according to claims 6 and 7, characterized in that the further shear members comprise individual actuators mounted between the common beam and the arms of the eccentric shafts for the straightening rollers in one row.
10. Apparat ifølge et hvilket som helst af kravene 4 til 9, kendetegnet ved, at rettevalseme er forsynet med to retteværker, og at forskydningsorganeme til forskydning af rettevalseme er tilvejebragt i et nedenstrøms retteværk.Apparatus according to any one of claims 4 to 9, characterized in that the straightening rollers are provided with two straightening mills and that the displacing means for displacing the straightening rollers are provided in a downstream straightening mill.