EP3401031A1 - Machine de pliage améliorée - Google Patents

Machine de pliage améliorée Download PDF

Info

Publication number
EP3401031A1
EP3401031A1 EP18171674.7A EP18171674A EP3401031A1 EP 3401031 A1 EP3401031 A1 EP 3401031A1 EP 18171674 A EP18171674 A EP 18171674A EP 3401031 A1 EP3401031 A1 EP 3401031A1
Authority
EP
European Patent Office
Prior art keywords
rollers
bending machine
rotation
pulleys
shaft
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.)
Pending
Application number
EP18171674.7A
Other languages
German (de)
English (en)
Inventor
Giorgio Vezzani
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.)
Cbc Srl
Original Assignee
Cbc Srl
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 Cbc Srl filed Critical Cbc Srl
Publication of EP3401031A1 publication Critical patent/EP3401031A1/fr
Pending legal-status Critical Current

Links

Images

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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Definitions

  • the present invention refers to an enhanced bending machine.
  • the present invention refers to an enhanced manually-operated or electrically-operated bending machine, and, even more specifically, it refers to a bending machine of a three-shaft type.
  • pipe bending or rounding aims at realizing well determined forms and/or patterns for a pipe (for instance, in the case of pipes used in heat exchangers or the like) or, also, at imparting greater strength to a tubular structure.
  • a tubular element bending or rounding process can be implemented by using either manually-operated bending machines or electrically-operated/motorized bending machines.
  • the bending machines typically known on the market and which reference will be made to in the present invention consist of so-called "three-driving-roller” bending machines, said grooved or race rollers being mounted on an equal number of shafts substantially arranged in a triangle or delta ( ⁇ ) configuration so as to define a passage for the profile to be bent/rounded that goes through said rollers and engages the grooves or races of said rollers which co-operate in defining a matrix-countermatrix system for the through-passing profile, which is progressively bent thanks to the pressure exerted thereon.
  • the traditional bending machines of the type mentioned above if of the electrically-operated/motorized types, are characterized in having a greater power with respect to the manually-operated ones and allow to save workforce.
  • rollers are driven by way of reducers or electric motors directly mounted on the shafts or, even, by way of electric motors in combination with actuators of an oil-pressure type.
  • the manually-operated bending machines don't have the drawbacks considered above when speaking about electrically-operated/motorized bending machines.
  • the traditional three-roller bending machines make it difficult to realize very short bending radii because, especially in the case of very thin pipes and profiles, they don't allow to minimize the deformations taking place in the pipes during the bending step due to the pressure exerted onto the pipe being enclosed between the movable roller and the fixed rollers.
  • a further drawback experienced in traditional three-roller bending machines and, in particular, in the manually-operated ones, is in that two or all three rollers thereof perform a driving function and, in the case of three driving rollers, it is complex to be able to adjust the position of the third roller in such a way that it is driving in any adjustment positions without having problems related to pipe slippages during the bending step.
  • An object of the present invention is to obviate the above-mentioned drawbacks.
  • an object of the present invention is to provide an enhanced bending machine of a manually-operated or electrically-operated three-shaft type, all three shafts being driving, and such as to allow to permanently have a constant pressure on the pipe or profile during the bending step without any slippages thereof.
  • a further object of the present invention is to provide a bending machine that allows an easy adjustment of the position of the third shaft in order to make it permanently driver in any adjustment positions without causing variations in the pressure exerted onto the pipe or profile to be bent.
  • a further object of the present invention is to provide a three-driving-shafts bending machine featuring reduced space occupation and such as to allow an easy transportation thereof.
  • a further object of the present invention is to put at users' disposal an enhanced, manually-operated or electrically-operated bending machine suitable for providing high strength and reliability over time and also such as to be implemented in an easy and cost-effective manner.
  • an enhanced bending machine suitable for performing bending operations in accordance with well determined forms and/or patterns for a tubular element or profile, comprising a framework which supports and accommodates the working members suitable for bending a pipe or profile, driving and moving members for driving and moving said working members, and adjustment members for adjusting the working members, the working members comprising three operating rollers or pulleys supported by their respective shafts, one shaft being movable, hence capable of getting closer to/moving away from the fixed-position shafts, the bending machine being characterized in that all three output shafts supporting the operating rollers or pulleys are drivers by way of the same driving member.
  • an enhanced bending machine indicated by the reference numeral 10 as a whole, comprises a framework 12, which supports and accommodates the working members suitable for bending a tubular element or profile 13, driving and moving members for driving and moving said working members, and adjustment members for adjusting said working members.
  • the working members comprise three operating rollers or pulleys, namely one movable roller 14 and two fixed rollers 14' and 14'', arranged in a triangle or delta " ⁇ " configuration, stabilized externally to the framework 12, by way of a key connection, by interference, or another known mode, on their respective output shafts 16, 16', and 16", of which the output shaft 16 is mounted on the framework 12 so as to be movable and be capable of getting closer to/moving away from the output shafts 16' and 16" which, on the contrary, are mounted fixed with respect to the framework, said shafts also having axes of rotation parallel to each other.
  • the operating rollers or pulleys 14, 14', and 14" are each provided with a circumferentially developed groove or race 15, the shape of which corresponds to the diameter and/or geometry of the tubular element or profile to be bent.
  • the output shaft 16 is movable, hence capable of getting closer to/moving away from the output shafts 16' and 16" by way of the working member adjustment means, said adjusting means comprising a guide 18 slidable with respect to the framework 12.
  • Said side rollers 20 feature an axis of rotation perpendicular to the axis of rotation of the operating rollers or pulleys and are rotationally arranged idle with respect to the support elements 22, whose inclination in a plane perpendicular to the axes of rotation of the operating rollers or pulleys can be adjusted by way of an adjustment ring nut 23, which each individual support element is provided with.
  • a rotatably supported, worm-toothed shaft 26 Internally to the framework 12 there is arranged a rotatably supported, worm-toothed shaft 26, the axis of rotation of which is perpendicular to that of the shafts of the operating rollers or pulleys by way of bearings 27 or equivalently known rotational support elements.
  • said worm-toothed shaft 26 is, as better described below, to allow for a simultaneous rotational driving of the operating rollers or pulleys, namely the movable one 14 and the fixed ones 14' and 14", so as to bend tubular elements or profiles.
  • the movement of the guide 18 and, consequently, of the output shaft 16 which supports the operating roller or pulley 14, i.e. the movable roller, with respect to the fixed rollers 14' and 14" is performed manually by way of an adjustment knob or handwheel 30 (an adjustment vernier) which allows for an accurate and micrometric adjustment (along a graduated scale 18') of the position of the guide 18 between a maximum separation position with respect to the fixed rollers or pulleys 14' and 14" (position A) and a minimum separation position from the mentioned rollers (position B) so as to define a displacement indicated by "X" in figure 2 .
  • an adjustment knob or handwheel 30 an adjustment vernier
  • the rotation of the operating roller or pulley 14 takes place by way of a toothed wheel 32 which meshes the worm-toothed shaft 26 (in any positions determined by adjusting the guide 18), said toothed wheel being secured to the movable shaft 16; the same toothed wheel 32 forces the movable output shaft 16 to rotate with respect to its own axis as described below in details.
  • a transmission 34 which comprises a transmission shaft 36, a first toothed transmission wheel 38 put in said transmission shaft and mesh-coupled with the worm-toothed shaft 26, a second toothed transmission wheel 39 which is coupled with a first gear-roller 40 and with a second gear-roller 42 secured onto the fixed output shaft 16' and output shaft 16" respectively.
  • the worm-toothed shaft 26 and the transmission 34 make up the member that drives the bending machine according to the invention which, owing to its own rotation, allows to simultaneously and synchronously move the movable output shaft 16 counterclockwise, in a direct manner, and the fixed shafts 16' and 16" clockwise, in an indirect manner, by way of the transmission 34.
  • a tubular element 13 to be bent is loaded onto the bending machine and arranged between the operating rollers or pulleys 14, 14', and 14", as shown in figure 1 , the outer surface of said tubular element coupling with the grooves or races 15 of the mentioned operating rollers or pulleys and is also being in contact with the surfaces of the opposed side rollers 20.
  • the position of the fixed operating roller or pulley 14 is manually adjusted by an operator by way of the guide 18, by acting on the knob or handwheel 30 which, by rotating according to the direction of the arrow "Y" in figure 5 , causes a translational movement of the guide 18 according to the direction "X" and, consequently, the movement of the output shaft 16 which the operating roller or pulley 14 is put in; in this way, the operating roller or pulley 14 exerts a pressure onto the tubular element 13.
  • the tubular element 13 is bent by making it slide between the operating rollers or pulleys by increasing or decreasing the distance of the movable operating roller or pulley 14 with respect to the fixed rollers or pulleys 14' and 14" between position A and position B; as the guide 18 moves from position A to position B, the distance between the movable roller or pulley 14 and the fixed rollers or pulleys 14' and 14" decreases and, in this way, the bending radius to be given to the tubular element becomes smaller.
  • the operator will bend a tubular element through a number of successive passages by varying each time the value for the displacement "X", i.e. by varying the position of the movable shaft 16 which supports the movable roller or pulley 14 with respect to the shafts 14' and 14" by acting on the adjustment knob or handwheel 30.
  • the enhanced bending machine as described above with reference to one manual operation embodiment can also be implemented in an electrical operation mode, which comprises an electric driving suitable for rotationally driving the worm-toothed shaft 26 which drives all three output shafts 16, 16', and 16" into rotation.
  • An enhanced bending machine according to the present invention of a three-shaft manually-operated or electrically-operated type, has all three shafts, drivers and is such as to allow to permanently have a constant pressure on the tubular element or profile during the bending step, while preventing it from slipping.
  • the bending machine according to the invention having all three shafts drivers, one of which in position-adjustable and driver in any positions, makes it possible to realize smaller bending radii, the capacity or characteristic of the profile or tubular element being equal, as compared to a three-shaft bending machines of a traditional type.
  • a further advantage is in that an enhanced bending machine according to the invention, wherein there are three driving shafts and the third shaft is simultaneously driver and movable, hence capable of getting closer to/moving away from the remaining two shafts, makes it possible to exert a pressure onto the tubular element in the bending step while preventing the latter from slipping and, consequently, residual deformations present in the tubular element during the bending step will be minor and reduced.
  • a bending machine structured as described above makes it possible to perform bending operations on a tubular element while preventing oscillations from occurring in the tubular element itself in correspondence with its terminal part not held between the operating rollers or pulleys.
  • a further advantage is in that the use of a worm screw makes it possible to have a bending machine featuring reduced space occupation and also easy to transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP18171674.7A 2017-05-12 2018-05-10 Machine de pliage améliorée Pending EP3401031A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000051909A IT201700051909A1 (it) 2017-05-12 2017-05-12 Calandra perfezionata

Publications (1)

Publication Number Publication Date
EP3401031A1 true EP3401031A1 (fr) 2018-11-14

Family

ID=60020333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18171674.7A Pending EP3401031A1 (fr) 2017-05-12 2018-05-10 Machine de pliage améliorée

Country Status (2)

Country Link
EP (1) EP3401031A1 (fr)
IT (1) IT201700051909A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109967576A (zh) * 2019-04-17 2019-07-05 宁国中奕橡塑有限公司 一种减震圈组件外骨架成型工艺
CN110434560A (zh) * 2019-08-19 2019-11-12 扬州吉星机械有限公司 一种异形焊管加工设备及其加工工艺
CN111421033A (zh) * 2020-06-10 2020-07-17 广东高谱弯曲技术有限公司 轮轴支架及具有该轮轴支架的滚弯机
CN112620422A (zh) * 2020-11-09 2021-04-09 陈子冈 一种可调试钢管折弯机
CN113634639A (zh) * 2021-09-14 2021-11-12 江苏申阳电梯部件有限公司 一种带翻边的薄壁型材滚弯机
DE102022108739A1 (de) 2022-04-11 2023-10-12 Peri Se Verfahren zur Herstellung eines Gerüstbelags

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112705601A (zh) * 2020-12-09 2021-04-27 国网河南省电力公司孟州市供电公司 一种电力用穿线铁管弯曲机
CN114147104B (zh) * 2021-11-30 2024-04-12 中芯晟捷(江苏)精密科技有限公司 一种铝合金锭加工成型用的折弯装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467671A (en) * 1943-11-02 1949-04-19 Twentieth Cent Fox Film Corp Pipe-bending machine
US4040283A (en) * 1976-11-02 1977-08-09 Patsy Suriano Bending rolls machine
JPS60108119A (ja) * 1983-11-16 1985-06-13 Yasunaga Suezaki ベンデイングマシン

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467671A (en) * 1943-11-02 1949-04-19 Twentieth Cent Fox Film Corp Pipe-bending machine
US4040283A (en) * 1976-11-02 1977-08-09 Patsy Suriano Bending rolls machine
JPS60108119A (ja) * 1983-11-16 1985-06-13 Yasunaga Suezaki ベンデイングマシン

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109967576A (zh) * 2019-04-17 2019-07-05 宁国中奕橡塑有限公司 一种减震圈组件外骨架成型工艺
CN110434560A (zh) * 2019-08-19 2019-11-12 扬州吉星机械有限公司 一种异形焊管加工设备及其加工工艺
CN111421033A (zh) * 2020-06-10 2020-07-17 广东高谱弯曲技术有限公司 轮轴支架及具有该轮轴支架的滚弯机
CN112620422A (zh) * 2020-11-09 2021-04-09 陈子冈 一种可调试钢管折弯机
CN113634639A (zh) * 2021-09-14 2021-11-12 江苏申阳电梯部件有限公司 一种带翻边的薄壁型材滚弯机
CN113634639B (zh) * 2021-09-14 2024-06-07 江苏申阳电梯部件有限公司 一种带翻边的薄壁型材滚弯机
DE102022108739A1 (de) 2022-04-11 2023-10-12 Peri Se Verfahren zur Herstellung eines Gerüstbelags

Also Published As

Publication number Publication date
IT201700051909A1 (it) 2018-11-12

Similar Documents

Publication Publication Date Title
EP3401031A1 (fr) Machine de pliage améliorée
KR101075336B1 (ko) 원형관의 교정장치 및 방법
EP3233322A1 (fr) Machine à cintrer pour le cintrage de tubes, de sections profilées, de tôles et similaires, dotée d'un système pour la mesure de la force de réaction appliquée par la pièce sur le ou les rouleau(x) de cintrage de la machine
CN219966103U (zh) 一种弯折角度可调的工业自动化铝材弯折设备
KR20130061933A (ko) 공작기계의 로터리 테이블 구동장치
US4304348A (en) Roll type sheet material feeding apparatus
JPH04742B2 (fr)
JP7120591B2 (ja) ロール成形装置
US20140000762A1 (en) Process and Device for Producing Parts, Notably Elongated Revolving Parts, by Machining a Bar Held Fixed in Rotation
KR100246646B1 (ko) 회전부품의 벽상에 홈을 냉간성형 시키는 장치 및 그 방법
JP6240011B2 (ja) 長尺材のロール曲げ装置及び曲げ加工方法
CN113695434B (zh) 钢管精成型装置
RU2622197C1 (ru) Устройство для изготовления изогнутых труб
TWI235707B (en) Roll device
CN113102649A (zh) 一种蛇形折弯机
US4580942A (en) Device for the manipulation of workpieces, assembly parts, or the like
US2901930A (en) Tube bending machines
CN102141792A (zh) 数字控制凸轮机构及其控制方法
US4923434A (en) High precision drive mechanism
US4823580A (en) Wheel-body forming apparatus
JP4316346B2 (ja) 伝動ベルトの製造方法
US2291928A (en) Variable power transmission mechanism
CN108181721B (zh) 对比度连续调节光栅的对比度连续调节方法
CN108916330B (zh) 一种传动装置
TR2023006957U5 (tr) Ayarlanabi̇li̇r profi̇l çekme maki̇nesi̇

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190506

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220113

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240522

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3