EP0012382B1 - Walzwerk zur Herstellung von mit Querrippen versehenen Rohren - Google Patents

Walzwerk zur Herstellung von mit Querrippen versehenen Rohren Download PDF

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Publication number
EP0012382B1
EP0012382B1 EP79104979A EP79104979A EP0012382B1 EP 0012382 B1 EP0012382 B1 EP 0012382B1 EP 79104979 A EP79104979 A EP 79104979A EP 79104979 A EP79104979 A EP 79104979A EP 0012382 B1 EP0012382 B1 EP 0012382B1
Authority
EP
European Patent Office
Prior art keywords
rolling
rolling mill
piston rod
slide
tool
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
Application number
EP79104979A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0012382A1 (de
Inventor
Janusz Dipl.-Ing. Mech. Przybyla
Leopold Ing. Mech. Haczek
Zygmunt Dipl.-Ing. Mech. Gozdziewicz
Andrzej Dipl.-Ing. Mech. Szal
Josef Ing. Mech. Pieczyk
Andrzej Dipl.-Ing. Mech. Maczynski
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.)
Zaklad Doswiadczalny przy Zakladach Urzadzen Chemicznych "Metalchem"
Original Assignee
Zaklad Doswiadczalny przy Zakladach Urzadzen Chemicznych "Metalchem"
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 Zaklad Doswiadczalny przy Zakladach Urzadzen Chemicznych "Metalchem" filed Critical Zaklad Doswiadczalny przy Zakladach Urzadzen Chemicznych "Metalchem"
Publication of EP0012382A1 publication Critical patent/EP0012382A1/de
Application granted granted Critical
Publication of EP0012382B1 publication Critical patent/EP0012382B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B21C37/205—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls with annular guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Definitions

  • the invention relates to a rolling mill for forming ribs on the surface of pipes.
  • Pipes with cross fins are used in heat exchangers in many branches of industry.
  • Known rolling mills for forming fins on pipes comprise a rolling stand which forms the main group of the device.
  • the roll stand mostly has a housing with three receptacles, which are arranged symmetrically to the vertical axis and carry hydraulic sterling motors with brackets, in which rolling tools are rotatably used.
  • the rolling tools which are designed as profiled roller packs, are attached to common shafts and are driven by a common motor via shafts with universal joints.
  • the rolling tools are pressed against the pipe from three sides by hydraulic control motors. This pressure, as well as the rotation of the tools, causes a plastic deformation in the tube, whereby ribs are formed.
  • the geometric parameters of the rolling process are regulated by appropriately positioning the control motors in relation to the housing.
  • the distance of the device from the pipe to be rolled can be adjusted and thus the height of the ribs produced can also be changed.
  • the axes of the tools are set at a corresponding angle to the rolling axis, the regular work of the rolling mill being dependent on an unchangeable setting of the angle for all tools. In known cases, this is done for each individual receptacle by rotating the piston or the cylinder of the control motor.
  • the rolling mill described in PL-A-80 413 is provided with tools which are attached directly to the piston, by means of which the angle of rotation of the roller axis relative to the rolling axis is adjusted, the piston simultaneously performing a reciprocating movement which causes periodic rolling the ribs on the tube.
  • the object of the invention is therefore to provide a rolling mill in which the attachment and adjustment of the tools can be carried out in a reliable and simple manner.
  • the hydraulic control motor which is equipped with a piston rod with two pistons, and the slide that works with it, allow the mutual spacing of the rolling tools to be set in a simple and precise manner and ensure that the tools can be exchanged conveniently for operation.
  • This exchange is carried out by moving the bracket of the tool out of the loosened seat, which is time-saving and does not require the roll mill to be readjusted.
  • the float angle of the tools is set separately for each individual seat, which is very advantageous for the fine adjustment. This activity is very simple and not time-consuming due to the provision of a stand that is easily accessible for operation.
  • the housings of three control motors 2 are rotatably mounted on the roll stand 1 with a precisely set position angle.
  • the control motors 2 each comprise a piston rod 3 with two pistons.
  • the outer piston 4 works together with an outer cylinder 5, which is screwed axially adjustable to the housing of the control motor 2.
  • the inner piston 6 cooperates with an inner cylinder 7 arranged axially displaceably in the housing 2.
  • the piston rod 3 has a flange 10.
  • the slide 12 is provided with a pressure plate 14, which is used to press a bracket 15 with a tool 16 onto the bottom 11 of the inner cylinder 7.
  • a guide 17 is formed in the slide 12, in which the flange 10 can be displaced.
  • the slide 12 is additionally provided with an outer stop 18 which cooperates with the bottom 11 of the inner cylinder 7.
  • the outer piston 4 is hydraulically shifted into the lower position.
  • the thrust path can be regulated by means of the height of the spacer plates 8 with which the stop 9 of the piston rod 3 comes into contact.
  • the inner cylinder 7 is shifted into its lowest position in the position described.
  • the axial movement of the inner cylinder 7 is limited by the advance of the slide 12, the position of which is determined by the fact that the cooperating flanges 10 and 13 come into contact and the height of that part of the bracket 15 which is between the pressure plate 14 of the slide 12 and the base 11 of the inner cylinder 7.
  • the position of this base with respect to the rolling axis is determined by the setting of the outer cylinder 5 in the threaded seat of the control motor housing 2 or the change in the height of the spacer plates 8. So that a non-ribbed pipe section can also be produced during the periodic formation of ribs, the slide 4 is hydraulically displaced into the outermost upper position. After a corresponding period of time and by a corresponding change in the pressure in the hydraulic system, the piston 4 returns to its previous position. During this movement, which is carried out together with the piston 4 and the piston rod 3, the slide 12 moves with the outer cylinder 7 and the bracket 15 with the tool 16, the tool remaining firmly attached.
  • the tool 16 is replaced by loosening the bracket 15, which is otherwise clamped between the slide 12 and the inner cylinder 7, and by withdrawing the tool 16 from the rolled tube.
  • the release of the bracket 15 is effected by moving the inner cylinder 7 upwards with the piston rod 3 remaining stationary, whereby the bottom 11 of the cylinder 7 is brought into contact with the stop 18 of the slide 12. In this way, a game occurs between the pressure plate 14 of the slide 12 and the bracket 15, as a result of which the bracket 15 is released.
  • the tool 16 is withdrawn from the rolled tube by a further displacement of the inner cylinder 7 upwards together with the slide 12 and the bracket 15.
  • the size of this slide path should be 20 mm so that the roller rollers are released from the profiled ribs of the tube.
  • the sliding path is limited by the length of the guide 17. Over the bottom of the slide 12 is supported against the piston rod 3. After the bracket 15 with the tool 16 has been withdrawn from the rolled tube in this way, the tool set can be used freely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
EP79104979A 1978-12-06 1979-12-06 Walzwerk zur Herstellung von mit Querrippen versehenen Rohren Expired EP0012382B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL1978211542A PL121343B1 (en) 1978-12-06 1978-12-06 Rolling mill for transversely ribbed pipes
PL211542 1978-12-06

Publications (2)

Publication Number Publication Date
EP0012382A1 EP0012382A1 (de) 1980-06-25
EP0012382B1 true EP0012382B1 (de) 1982-12-29

Family

ID=19993041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104979A Expired EP0012382B1 (de) 1978-12-06 1979-12-06 Walzwerk zur Herstellung von mit Querrippen versehenen Rohren

Country Status (11)

Country Link
US (1) US4312207A (enrdf_load_stackoverflow)
EP (1) EP0012382B1 (enrdf_load_stackoverflow)
JP (1) JPS5581034A (enrdf_load_stackoverflow)
CS (1) CS212248B2 (enrdf_load_stackoverflow)
DD (1) DD147630A5 (enrdf_load_stackoverflow)
DE (1) DE2964441D1 (enrdf_load_stackoverflow)
HU (1) HU181034B (enrdf_load_stackoverflow)
PL (1) PL121343B1 (enrdf_load_stackoverflow)
RO (1) RO77961A (enrdf_load_stackoverflow)
SU (1) SU1118278A3 (enrdf_load_stackoverflow)
YU (1) YU288679A (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546819A (en) * 1984-02-10 1985-10-15 Amtrol Inc. Double wall heat exchanger
JPH0413726U (enrdf_load_stackoverflow) * 1990-05-24 1992-02-04
GB9213770D0 (en) * 1992-06-29 1992-08-12 Davy Mckee Sheffield An hydraulic load capsule for a metal working rolling mill
IT1311775B1 (it) * 1999-01-19 2002-03-19 Andrea Toffanin Dispositivo di regolazione della posizione dei rulli forgianti in unalinea di profilatura.
CA2464631C (en) * 2003-04-17 2007-03-13 International Roller Technology Inc. Method and apparatus to reduce slot width in tubular members
CA2674058C (en) * 2008-07-30 2016-11-29 Magna International Inc. Hydraulic cylinder with three positive position stops
US9303493B2 (en) 2009-05-15 2016-04-05 Vast Power Portfolio, Llc Method and apparatus for strain relief in thermal liners for fluid transfer
US9441464B2 (en) 2010-05-17 2016-09-13 Vast Power Portfolio, Llc Bendable strain relief fluid filter liner, method and apparatus
CN104324944B (zh) * 2014-10-28 2016-10-26 太原磬泓机电设备有限公司 具有辊距在线调整功能的二辊无缝钢管轧机
CN106925699A (zh) * 2017-04-27 2017-07-07 沈阳飞机工业（集团）有限公司 一种用于mj外螺纹牙底圆弧滚压装置
US11006959B2 (en) 2018-03-28 2021-05-18 Covidien Lp Surgical anvil assemblies for surgical stapling instruments
CN113385623B (zh) * 2021-08-16 2021-11-19 常州市多朋机械有限公司 一种加强冷却的滚丝轮及运用该滚丝轮的滚丝工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL80413B2 (enrdf_load_stackoverflow) * 1973-11-29 1975-08-30

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730158A (en) * 1949-08-25 1956-01-10 Louvroil Montbard Aulnoye Straightening machines with hyperbolic rolls
US3389589A (en) * 1966-05-16 1968-06-25 Medart Engineering & Equipment Straightening machine
US3683656A (en) * 1970-03-25 1972-08-15 Carl M Lewis Heat exchanger apparatus and method of making the same
DE2037839A1 (en) * 1970-07-30 1972-02-03 Arndt, Franz Martin, 5860 Iserlohn Hydrostatic regulator with automatic clamping - for roll gap adjusted
SU493285A1 (ru) 1974-05-22 1975-11-28 Предприятие П/Я В-2869 Устройство дл установки валка в клети стана переодической винтовой прокатки

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL80413B2 (enrdf_load_stackoverflow) * 1973-11-29 1975-08-30

Also Published As

Publication number Publication date
JPS6211937B2 (enrdf_load_stackoverflow) 1987-03-16
HU181034B (en) 1983-05-30
RO77961A (ro) 1981-12-25
SU1118278A3 (ru) 1984-10-07
DE2964441D1 (en) 1983-02-03
DD147630A5 (de) 1981-04-15
CS212248B2 (en) 1982-03-26
YU288679A (en) 1983-01-21
PL121343B1 (en) 1982-04-30
EP0012382A1 (de) 1980-06-25
US4312207A (en) 1982-01-26
JPS5581034A (en) 1980-06-18
PL211542A1 (enrdf_load_stackoverflow) 1980-07-14

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