EP0214940A2 - Einrichtung zum Richten von Stäben und dergleichen - Google Patents

Einrichtung zum Richten von Stäben und dergleichen Download PDF

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Publication number
EP0214940A2
EP0214940A2 EP86830246A EP86830246A EP0214940A2 EP 0214940 A2 EP0214940 A2 EP 0214940A2 EP 86830246 A EP86830246 A EP 86830246A EP 86830246 A EP86830246 A EP 86830246A EP 0214940 A2 EP0214940 A2 EP 0214940A2
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EP
European Patent Office
Prior art keywords
path
bar
frame
chains
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.)
Withdrawn
Application number
EP86830246A
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English (en)
French (fr)
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EP0214940A3 (de
Inventor
Marcellina Baroni
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0214940A2 publication Critical patent/EP0214940A2/de
Publication of EP0214940A3 publication Critical patent/EP0214940A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers

Definitions

  • This invention relates to a straightener machine for bars and the like, such as flat and section bars of various description, wherein a bar path extending between a bar inlet end and a bar outlet end is defined within a parallelepipedic frame.
  • the corrective operation for such deformations is usually carried out by subjecting bars to be straightened to sequential bending and stretching steps which are accurately set up in relation to the characteristics and the size of the material involved.
  • bars of a large size forbid roller-type straighteners because, in order to keep the working load low, rollers of too large a diameter and spacing must be provided.
  • the problem underlying this invention is to provide a straightener machine for bars and the like, which has such constructional and operational features as to obviate the prior art drawbacks mentioned above.
  • a straightener machine characterized in that it comprises:
  • bars would be straightened without deforming and upsetting their edges, since the specific load is much diminished, but without hindering the bar straightening action.
  • I is a straightener machine according to this invention.
  • Said machine I comprises a parallelepipedic metal frame 2, wherein a path 3a for a bar 3 to be straightened is defined, which bar path extends from a bar inlet end la to a bar outlet end lb.
  • the frame 2 is provided with receptacles 32 for anchoring means (not shown) to a foundation, and with a lateral inspection port 33 at the bar path 3a.
  • a roller feedway 4 is provided upstream of the straightener machine, a removal roller way 5 being provided at a downstream location.
  • Said roller ways or tracks 4 and 5 further comprise carrier elements 8 and 9, respectively.
  • the machine I is equipped with protective shields 6 and 7 supported on the frame 2 at the roller ways 4 and 5.
  • the straightener machine I also comprises, within the frame 2, two endless flat link chains, an upper one 14 and a lower one 15, juxtaposed to the bar path 3a and each having a working run which extends along and proximate to said path 3a and is driven to move from the bar inlet end la to the bar outlet end lb, as made clear hereinafter.
  • the chains 14 and 15 are trained and driven in quite a conventional manner by means of respective sprocket wheel pairs 10, II and 12, 13 having mutually parallel axes across the path 3a and being journalled on the frame 2.
  • the sprocket wheels 10 and 12 are located close to the roller way 4, whereas the sprocket wheels II and 13 are placed in the proximity of the roller way 5.
  • the sprocket wheels 11 and 13 are rigid with respective shafts 16 and 17 coaxial with the sprocket wheels and connected, in a manner known per se, to conventional motors, not shown in the drawing, whereas the sprocket wheels 10 and 12, in turn connected rigidly to shafts 61 and 62, are idler wheels.
  • the chains 14 and 15 comprise a plurality of articulated links 18 having the same pitch and including parallel cylindrical pins 19, connecting plates 20, and guiding plates 21 lying parallel to one another and further discussed hereinafter.
  • Wheels 37, journalled at the ends of the pins 19, are guided on tracks 38 carried by the frame 2 and extending along sides of said flat link chains 4 and 5.
  • Each pin 19, lying transversely to the bar path 3a, is tied to its preceding and following pins by the connection plates 20 and the guide plates 21, located inwardly with respect to the links 18 of the plates 20, said plates 20 and 21 being journalled close to respective ends of the pins 19.
  • each link 18 there is defined a spacing 63 delimited by two parallel pins 19 and two plates 21, also parallel to each other and set mutually apart.
  • the straightener machine 1 of this invention further comprises a plurality of pressure members 24, distributed along the chains 14 and 15, each supported in freely slidable manner by a respective link 18 of said chains and having a working surface 26 with a preset area facing outward of its respective flat link chain, thereby the pressure members of the working runs of said chains 14 and 15 will have said working surfaces 26 arranged to face the bar path 3a.
  • a liner 26a is secured detachably by means of clamps 27 at said working surface 26 of preset area.
  • Each pressure member 24 is provided with two slides 25, formed on opposite sides of the pressure member and fitting slidingly in their respective slideways 23. Further, the slides 25 are made longer than the slideways 23.
  • Each slide 25 is slidable in the slideway 23 between two stop elements 35 and 36 formed on the pressure member 24 itself; more specifically, a lower stop 36 is comprised of a raised edge of said liner 26 at a first end of the slide, and an upper stop 35 is formed by a plate 34 attached to the pressure member 24 on a remote side from the surface 26, at a second end of the slide 25.
  • Pins 28 having their axes laid transversely to the bar path 3a fit slidingly into respective ones of the pressure members 24 and related slides 25.
  • Radial rolling bearings 29, five for each presser 24 in the example shown, are mounted rotatably on the pins 28 and fit in respective seats 31 formed in the pressure members on the remote side from the working surface 26; the seats 31 are, moreover, separated from one another by partitions 30 formed in the pressure members 24 and through-penetrated by the pins 28.
  • the pressure members 24 are shifted operatively in said direction toward said bar path 3a by appropriate drive means 41 to 46.
  • said drive means comprise cams 41,42,43 and 44,45,46 for guiding the pressure members of the working runs of the flat link chains 14 and 15, respectively.
  • Such guiding cams which are juxtaposed to the bar path 3a and offset from one another, are supported slidingly in a - conventional manner on crosspieces 39 and 40 extending along the bar path in a parallel direction to the working run of the chain 14 and the chain 15, respectively, and fast with the frame 2.
  • the guide cams have respective adjustment devices 47,48,49 and 50,51,52 for positional adjustment both in the direction toward and away from the bar path, and along said crosspieces 39 and 40, said devices being known per se and only shown schematically in Figure 2.
  • the pressure members 24 located at said guide cams engage the latter via bearings 29 mounted thereon, and act on the bar path 3a in pressure contact relationship through said working surfaces 26, as provided with liners 26a.
  • sprocket wheels 10,11,12 and 13 Located in the vicinity of the sprocket wheels 10,11,12 and 13, there also are tracks (53-54, 55-56, 57-58 and 59-60, respectively) for guiding the pressure members 24, also made rigid with the frame 2.
  • the sprocket wheels 10 and 11, with their shafts, the chain 14 with its guide cams, track and crosspiece 39 may be mounted on an outfit movable on runways formed in the frame 2 in a perpendicular direction to the bar path, and equipped with adjustment means and lifting means known per se.
  • articulated chain links as outfits carried movably on the frame 2 alternately and on opposite sides of the bar path, and carrying the pressure members, and the use - of endless flat link chains as the means to shift such outfits along the bar path from the bar inlet end to the bar outlet end, constitute a preferred but not limitative feature of this invention.
  • the straightener machine of this invention operates as follows.
  • the two driving sprocket wheels 11 and 13 are caused to rotate at the same speed, but in opposite directions, such that the pressure members 24 and the working runs of the chains 14 and 15 are also driven at the same speed along the bar path 3a from the bar inelt end to the bar outlet end.
  • a bar 3 requiring straightening is then started into the machine 1 from the roller feedway 4 and inserted between the flat link chains 14 and 15 in the bar path 3a.
  • the pressure members of the chain working runs are urged, under the action of the guide cams, toward the bar and pressed thereagainst with a set force by the cam position adjustment devices; these devices also enable the spacings of the guide cams to be changed to accommodate the dimensions and characteristics of the bar 3.
  • the bar is straightened by subjecting it a number of bending and stretching steps of decreasing intensity as it moves along the bar path, until it exits the straightener machine on the removal roller way 5.
  • the flat link chains 14 and 15, trained around their respective sprocket wheels 10, 11 and 12, 13, are carried on the frame 2 rotated 90° from their lay in the machine 1.
  • warp-preventing device 91 in a schematical, part-sectional side view from which the - flat link chain 15 and its related structures and devices have been omitted for clarity.
  • the bar path 3a extends through the machine 101 from a bar inlet end 101a located downstream of the machine I, and a bar outlet end 101b.
  • the warp-preventing device 91 includes suitable warp-preventing guides 70 to 73, which are perpendicular to the direction toward and away from the bar path 3a along which the pressure members are shifted in operation.
  • said warp-preventing guides comprise endless roller flat link chains, that is two side-by-side upper chains 70 and 71, and two lower chains 72 and 73, also laid side-by-side, which are juxtaposed with respect to the bar path 3a and perpendicular to said direction, and have respective working runs extending along and at the path 3a, being driven from the bar inlet end 101a to the bar outlet end 101b, as made clear further in this description.
  • the chains 70 to 73 are trained around and driven, in quite a conventional manner, by pairs of upper 79,80 and lower 81,82 sprocket wheels, respectively, which are journalled on the frame 2.
  • Said sprocket wheels have their axes parallel to one another and orthogonal to the bar path 3a, the sprockets 79 and 81 being idler wheels placed in the proximity of the bar inlet 101a, whereas the driving sprocket wheels 80 and 82 are located at the bar outlet 101b.
  • the endless roller flat link chains 70-73 are formed of a plurality of articulated links including cylindrical parallel pins 75 and plates 74 laid parallel to each other in spaced apart relationship and being journalled in the proximities of upset ends of the pins 75.
  • hollow cylindrical rollers 76 fit over the pins 75 in a freely rotatable manner.
  • the chains 70 to 73 are supported slidingly and guided within cavities 96 formed at the ends of support and guide uprights lying parallel to one another, such as the upper uprights 92,93 and lower uprights 94,95, which are supported, in turn, on the frame 2.
  • Each, upper or lower, upright is thus formed with two cavities 96, one of which confronts and is open toward the bar path 3a, accomodating the working run of a respective roller chain guidingly therein, whereas the other, wherein a return run of said chain is stretched, faces an upper crosspiece 77 for the uprights 92 and 93 and a lower crosspiece 78 for the uprights 94 and 95, to which crosspieces each upright is secured rigidly; the crosspieces 77 and 78, extending along the path-3a and being parallel to each other, are also supported on the frame 2.
  • roller chains 70-73 are guided in each cavity 96 by a respective rail 97 formed on the supporting upright and lying along the bar path, and that all these rails 97, as suitably dimensioned, would only contact the rollers 76 of the chains (see Figures 9 and 10).
  • the crosspieces 77 and 78 to which the uprights 92-95 are attached, and the sprocket wheels 79-82, are supported on the frame adjustably toward and away from the - bar path by means of conventional hydraulic drive cylinders, indicated in Figure 8 at 83,84,85 for the upper cylinders and at 86,87 and 88 for the lower cylinders.
  • the two crosspieces 77 and 78 are, moreover, held in a set mutual position by ties 89 and 90 having respective ends attached to such crosspieces.
  • roller chains 70-73 are so positioned as to be in contact with the bar 3 and are moved by the driving sprockets from the bar inlet end 101a to the bar outlet end 101b; the rollers 76 of such chains, being allowed to turn freely around their respective cylindrical pins 75, roll over blocks 97 and 98.
  • the proportion of the bars exhibiting an acceptable degree of straightness can be increased considerably, while achieving good production rates.
  • two or more straighteners with differently oriented work planes serially one can effect automatically and successively straightening in several planes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Heating (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Wire Processing (AREA)
EP86830246A 1985-09-13 1986-09-05 Einrichtung zum Richten von Stäben und dergleichen Withdrawn EP0214940A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT22149/85A IT1185914B (it) 1985-09-13 1985-09-13 Macchina raddrizzatrice per barre e simili
IT2114985 1985-09-13

Publications (2)

Publication Number Publication Date
EP0214940A2 true EP0214940A2 (de) 1987-03-18
EP0214940A3 EP0214940A3 (de) 1987-10-07

Family

ID=11192225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830246A Withdrawn EP0214940A3 (de) 1985-09-13 1986-09-05 Einrichtung zum Richten von Stäben und dergleichen

Country Status (2)

Country Link
EP (1) EP0214940A3 (de)
IT (1) IT1185914B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105499317A (zh) * 2016-02-04 2016-04-20 镇江市黄墟锚链有限公司 一种起重链的调直传送装置
CN105689582A (zh) * 2016-02-04 2016-06-22 镇江市黄墟锚链有限公司 一种起重链加工系统中的传送机构
CN105689597A (zh) * 2016-02-04 2016-06-22 镇江市黄墟锚链有限公司 一种调直机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081411B (zh) * 2018-01-29 2020-02-07 西安建筑科技大学 一种原竹矫直设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252085A (en) * 1938-10-06 1941-08-12 Friedrich K Maussnest Apparatus for flattening and leveling sheet coil, and plate material
DE730316C (de) * 1939-06-08 1943-01-09 Th Kieserling & Albrecht Masch Ausgestaltung der Zu- und Abfuehrungsvorrichtung fuer Richtmaschinen
DE863335C (de) * 1939-01-20 1953-01-15 Demag Ag Richtmaschinen mit Richtwalzen fuer Bleche und Metallbaender
US2698043A (en) * 1950-11-22 1954-12-28 Voss Engineering Company Roller leveler
US3240412A (en) * 1963-01-30 1966-03-15 Bayer Ag Arrangement for continuously handling moving tensioned webs of foil with flanged edges

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252085A (en) * 1938-10-06 1941-08-12 Friedrich K Maussnest Apparatus for flattening and leveling sheet coil, and plate material
DE863335C (de) * 1939-01-20 1953-01-15 Demag Ag Richtmaschinen mit Richtwalzen fuer Bleche und Metallbaender
DE730316C (de) * 1939-06-08 1943-01-09 Th Kieserling & Albrecht Masch Ausgestaltung der Zu- und Abfuehrungsvorrichtung fuer Richtmaschinen
US2698043A (en) * 1950-11-22 1954-12-28 Voss Engineering Company Roller leveler
US3240412A (en) * 1963-01-30 1966-03-15 Bayer Ag Arrangement for continuously handling moving tensioned webs of foil with flanged edges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105499317A (zh) * 2016-02-04 2016-04-20 镇江市黄墟锚链有限公司 一种起重链的调直传送装置
CN105689582A (zh) * 2016-02-04 2016-06-22 镇江市黄墟锚链有限公司 一种起重链加工系统中的传送机构
CN105689597A (zh) * 2016-02-04 2016-06-22 镇江市黄墟锚链有限公司 一种调直机

Also Published As

Publication number Publication date
IT8522149A0 (it) 1985-09-13
EP0214940A3 (de) 1987-10-07
IT1185914B (it) 1987-11-18

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