WO2013068013A2 - Cintreuse de tubes électrique portative - Google Patents

Cintreuse de tubes électrique portative Download PDF

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Publication number
WO2013068013A2
WO2013068013A2 PCT/DK2012/050407 DK2012050407W WO2013068013A2 WO 2013068013 A2 WO2013068013 A2 WO 2013068013A2 DK 2012050407 W DK2012050407 W DK 2012050407W WO 2013068013 A2 WO2013068013 A2 WO 2013068013A2
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
rollers
roller
bending
bending apparatus
Prior art date
Application number
PCT/DK2012/050407
Other languages
English (en)
Other versions
WO2013068013A3 (fr
Inventor
Ivar CHRISTENSEN
Original Assignee
Bend-It Aps
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 Bend-It Aps filed Critical Bend-It Aps
Priority to DE212012000199.9U priority Critical patent/DE212012000199U1/de
Publication of WO2013068013A2 publication Critical patent/WO2013068013A2/fr
Publication of WO2013068013A3 publication Critical patent/WO2013068013A3/fr
Priority to DKBA201400095U priority patent/DK201400095U3/da

Links

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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • 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
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B21D7/063—Pliers with forming dies

Definitions

  • the present invention relates to an apparatus for bending pipes and may be used within a variety of fields of work, such as for instance plumbing, the pharmaceutical industry, construction of freight containers, hospitals, shipyards and different types of cooling industry.
  • Pipe-bending apparatuses capable of bending a pipe within three dimensions are known in the art.
  • an apparatus is known in which a bending member is constructed within a ring comprising four sets of hydraulically activated rollers.
  • This apparatus is a very heavy construction and therefore a stationary installed machine.
  • Portable pipe-bending apparatuses are also known in the art.
  • Such apparatuses are only suitable for bending a pipe within two dimensions and they must be manually adjusted for every bending to be performed. It is often possible to bend a pipe within three dimensions using such an apparatus but it requires manual rotation of the pipe and manual measurement of the position, at which the pipe should be bent.
  • a cylinder is often used for bending the pipe around some rollers.
  • the present invention relates to a portable pipe-bending apparatus comprising a pipe- conveying system for conveying a straight pipe along its longitudinal direction and a bending head comprising a fixed bushing, preferably made from bronze or brass, arranged to receive the pipe conveyed from the pipe-conveying system, a fixed roller arranged after the fixed bushing in the direction of conveyance of the pipe and so that it supports the pipe on one side, and a bending roller arranged after the fixed roller in the direction of conveyance of the pipe on the opposite side of the pipe than the fixed roller, wherein the bending roller is arranged to be movable in a direction towards the pipe for bending the pipe around the fixed roller.
  • a fixed bushing preferably made from bronze or brass
  • the use of a bending head with only two rollers results in a simpler, more cost- efficient and more reliable solution than when using more rollers.
  • the method applied by the apparatus in which the bending radius depends solely on the relative positions of the fixed roller and the bending roller, means that the same set of rollers can be used for bending a pipe in any desired radius.
  • the bending head is rotatable 360 degrees around a longitudinal direction of the pipe.
  • the possibility of rotating the bending head 360 degrees around the pipe means that the apparatus is capable of making a plurality of bends on a pipe in any desired direction in three dimensions in one continuous procedure without any manual adjustments needed.
  • the distance between the fixed roller and the bending roller in the direction of conveyance of the pipe is adjustable.
  • the apparatus is arranged to be driven by a 12V DC power supply.
  • the apparatus can, for instance, be supplied by the electric system of a vehicle, such as a service car.
  • the weight of the apparatus is less than 50 kg, preferably less than 25 kg.
  • the low weight of the apparatus means that it can be carried by a single person.
  • the apparatus is designed to be able to constitute a part of the arrangement within a vehicle, such as a service car or a craftsman's car. If the apparatus is a part of the arrangement within a vehicle, it is very easy to transport the apparatus, for instance between different places of work.
  • the apparatus can be programmed and controlled by a computer.
  • Computerized programming and control of the apparatus ensures an easy, safe and reproducible operation of the apparatus and enables for a check on a monitor display of the appearance of the resulting bended pipe before the bending is initiated.
  • the apparatus is arranged to be able to communicate wirelessly with a control unit.
  • control unit comprises a touch screen.
  • Wireless communication means that the control unit can be taken to the place, where the bended pipe is to be installed, so that the data for the pipe may be entered on the site.
  • control unit is a programmable mobile phone or a portable computer.
  • the pipe-conveying system comprises two or more rollers, at least one of which is arranged to be driven to rotate by a conveying motor, so that a pipe, which is clamped between the two or more rollers, is conveyed in its longitudinal direction by the rotation of the at least one motor-driven roller.
  • the pipe-conveying system comprises four rollers arranged so that a pipe conveyed by the pipe-conveying system has two rollers on one side and two rollers on the opposite side.
  • the rollers are produced from an elastic material, such as rubber.
  • an elastic material such as rubber.
  • the use of such materials ensures a long durability of the rollers and the necessary friction between the pipe and the rollers so that they do not slide in relation to each other.
  • a pipe groove is formed along the periphery of each of the rollers for receiving at least partly the pipe, so that the pipe grooves of two opposing rollers together enclose at least partly, preferably completely, the pipe as it passes by the rollers.
  • each of the rollers comprise a rubber roller body, at least the outermost layer of which is made of an elastic material so that it is capable of at least partly enclosing a pipe passing by and to substantially regain its original form when the pipe has passed.
  • the roller bodies of the rollers are designed so that the outermost layers of two opposing rollers together are able to enclose at least partly, preferably completely, the pipe as it passes by the rollers.
  • the roller body of each of the rollers is compressed between a top piece and a bottom piece of the roller so that the roller body bulges out in its radial direction.
  • rollers ensuring that the pipe is completely or at least partly enclosed by parts of the rollers when passing by the rollers ensure the necessary friction between the pipe and the rollers so that they do not slide in relation to each other.
  • a pipe-conveying system comprising two or more rollers, at least one of which is arranged to be driven to rotate by a conveying motor, so that a pipe, which is clamped between the two or more rollers, is conveyed in its longitudinal direction by the rotation of the at least one motor-driven roller.
  • the pipe-conveying system comprises four rollers arranged so that a pipe conveyed by the pipe-conveying system has two rollers on one side and two rollers on the opposite side.
  • the rollers are produced from an elastic material, such as rubber.
  • a pipe groove is formed along the periphery of each of the rollers for receiving at least partly the pipe, so that the pipe grooves of two opposing rollers together enclose at least partly, preferably completely, the pipe as it passes by the rollers.
  • each of the rollers comprise a rubber roller body, at least the outermost layer of which is made of an elastic material so that it is capable of at least partly enclosing a pipe passing by and to substantially regain its original form when the pipe has passed.
  • the roller bodies of the rollers are designed so that the outermost layers of two opposing rollers together are able to enclose at least partly, preferably completely, the pipe as it passes by the rollers.
  • the roller body of each of the rollers is compressed between a top piece and a bottom piece of the roller so that the roller body bulges out in its radial direction.
  • a method for bending a pipe comprising the steps of conveying the pipe, in the following order, through a fixed bushing, past a fixed roller on one side and past a bending roller on the opposite side, and moving the bending roller in a direction towards the pipe for bending the pipe around the fixed roller.
  • Fig. 1 illustrates the bedplate of a pipe-bending apparatus according to an embodiment of the invention
  • Fig. 2 illustrates a pipe-conveying system of a pipe-bending apparatus
  • Fig. 3 illustrates a bending head of a pipe-bending apparatus according to an embodiment of the invention
  • Fig. 4 illustrates some parts of the bending head illustrated in fig. 3,
  • Fig. 5 illustrates an example of a display layout used in relation to the
  • Fig. 6 illustrates a pipe-conveying system according to an embodiment of the invention
  • Fig. 7 illustrates a roller for a pipe-conveying system according to another embodiment of the invention, and illustrates a pair of rollers of a pipe-conveying system according to an embodiment of the invention.
  • a bedplate In a preferred embodiment of the invention, it comprises three main components: a bedplate, a bending head and an electric control system including software.
  • Fig. 1 illustrates the bedplate of the apparatus, in which a U-profile constitutes a frame 1 for the mounting of conveying rollers 2-4 and a roller top guide plate 5 as well as a support block 6, onto which a handle 7 for transportation of the pipe- bending apparatus is mounted.
  • a conveying motor 13 (not shown in Fig. 1), a toothed belt for conveyance 14 (not shown in Fig. 1) and a printed wire board with control electronics (not shown), these items are all mounted inside the frame 1.
  • Fig. 1 further illustrates a support system for avoiding deflection of the pipe 12 when bending it.
  • the support system consist of a support block 6 with a bore or a bushing (not shown), the diameter of which corresponds to the diameter of the pipe 12 to be bent. Furthermore, the support block 6 is supports a holder 11 for the bending head of the apparatus.
  • a toothed rim 10 mounted on this holder 11 is used for swivelling the holder 11 around the direction of conveyance (i.e. around the longitudinal direction of the pipe 12) and is able to rotate the holder 11 360 degrees.
  • the toothed rim 10 for swivelling is driven by a 12V DC swivelling motor 8 with a cogwheel 9 mounted thereon.
  • Fig. 2 illustrates a pipe-conveying system comprising two driving conveying roller 3, 4, which can be coated with rubber (for instance by vulcanization) for ensuring a sufficient friction between the rollers 3, 4 and the pipe 12.
  • the conveying rollers 3, 4 are mounted on the frame 1 and controlled by shafts 15 with guide bushings at the top and bottom. These shafts 15 are arranged for freewheeling and pressed against the pipe 12 by compression springs so that there is a stable connection between the pipe 12 and the conveying rollers 3, 4 conveying the pipe 12.
  • the clamping roller 2 and the two conveying rollers 3, 4 have a fixed milled groove each, which is adapted to the specific type of pipe 12 to be bent.
  • FIG. 3 and 4 illustrate a bending head of for a pipe-bending apparatus and parts of the same bending head, respectively.
  • the purpose of the bending head is to bend the pipe 12 in three dimensions by means of a fixed roller 18 and a moveable bending roller 19. Being mounted on the holder 11, the bending head can be rotated 360 degrees around the longitudinal axis of the pipe 12.
  • the shaft 20 for the fixed roller 18 cannot be moved so the fixed roller 18 stays in a fixed position but it rotates due to the contact with the pipe 12 passing by at it is being bent.
  • the fixed roller 18 has a milled recess deeper than the cross-sectional dimension of the pipe 12 in order to avoid a flattening of the pipe 12 during the bending.
  • the bending roller 19 also rotates due to the contact with the pipe 12 but has a less deep milled recess as its only purpose is to press against the pipe 12 in order to obtain the desired radius of the bending.
  • the radius of the bending is controlled by the adjustable position of the shaft 20 of the bending roller 19, whereas the direction of the bending is controlled by the rotational position of the bending head in relation to the longitudinal axis of the pipe 12.
  • the position of the shaft 20 of the bending roller 19 and, thereby, the bending radius are regulated by means of a spindle 22 driven by a bending motor 26 through three cogwheels 25, 27, 28.
  • the position of the shaft 20 can be regulated by other means, such as for instance an actuator.
  • the movement of the shaft 20 does not have to be linear but can follow an angular path, such as for instance a circular arc.
  • the apparatus can also be used for bending non-circular pipes and other products, such as for instance structural steel. In such cases, however, the product to be bent is not able to rotate within the milled recesses of the fixed roller 18 and the bending roller 19, and bending can only be performed in two dimensions (i.e. in a given geometrical plane).
  • the electric part of the pipe-bending apparatus can be supplied with 12V DC 25 A, as all motors 8, 13, 26, encoders and the control circuits in the illustrated embodiment can operate at 12V DC.
  • the electric control consists of a control circuit arranged on a printed circuit board with electronics, a touch panel and encoders for conveyance and for measurement of radius and angle.
  • the control circuit has output channels for the three motors 8, 13, 26 and can, optionally, be equipped with one or more extra output channels. Furthermore, the control circuit has input channels for the encoders for conveyance and for measurement of radius and angle and, optionally, one or more extra input channels.
  • the control circuit can be wirelessly connected to the touch panel, for instance using the Bluetooth protocol.
  • the touch panel transmits data for the desired bending of the pipe 12 to the control circuit, which controls the operation of the pipe-bending apparatus for performing the task correctly.
  • Fig. 5 illustrates an example of a display layout used in relation to the programming of a pipe-bending apparatus.
  • the touch panel may be a tablet computer or a smartphone, which can be brought to the place of installation of the bent pipe 12.
  • the measurements can be entered during the measuring and the resulting pipe is illustrated on the display. If the result does not correspond to the requirements, measurements, radii and angle can be adjusted so that the desired result is obtained. After that, a "Start" command can be given, the entered data is transferred to the pipe-bending apparatus, for instance using the Bluetooth protocol, and the apparatus performs the task.
  • the software may be designed as a smartphone application and can be digitally locked to a specific pipe- bending apparatus so that this apparatus can be remotely controlled from a smartphone or a tablet computer.
  • Fig. 6 illustrates a pipe-conveying system 29 according to an embodiment of the invention.
  • the pipe 12 is conveyed between four conveying rollers 32 arranged so there are two rollers 32 on each side of the pipe 12.
  • the four conveying rollers 32 are mounted onto a frame 30, which is also provided with mount holes 31 for a support block 6 as described above.
  • the conveying rollers 32 shown in Fig. 6 are illustrated in more detail in Fig. 7. Each of them comprise a top piece 33 and a bottom piece 34 produced from aluminium and a rubber roller 35 arranged between the top piece 33 and the bottom piece 34.
  • the bottom piece 34 comprises a contact plate 39, a roller shaft 40 with a rectangular cross-section on one side of the contact plate 39 and a cylindrical drive shaft 42 on the other side of the contact plate 39.
  • the drive shaft 42 can be connected to a conveying motor 13 by means of a toothed belt 14 or the like for using the conveying motor 13 for rotating the conveying roller 32.
  • the rectangular roller shaft 40 fits into a corresponding central through-hole of the rubber roller 35 so that the rubber roller 35 is forced to rotate with the bottom piece 34.
  • the top piece 33 comprises a contact plate 37 and a cylindrical shaft 38, which fits into a hole 41 in the roller shaft 40 of the bottom piece 34.
  • the top piece 33 and the bottom piece 34 are constructed so that they can be pressed together, thus compressing the rubber roller 35, which is specially produced with a rigid rubber core at the centre and is softer outside this core.
  • the rubber rollers 35 can be compressed enough to bulge out several millimetres at the centre so that the rubber rollers 35 of two conveying rollers 32 placed opposite each other together are able to enclose completely the pipe 12 to be bent in order to obtain the best possible friction between the conveying rollers 32 and the pipe 12.
  • Fig. 8 illustrates a pair of conveying rollers 43 of a pipe-conveying system 29 according to another embodiment of the invention.
  • the conveying rollers 43 consist of form-pressed rubber rollers with a peripheral milled pipe groove 44 for enclosing the pipe 12.
  • two oppositely positioned conveying roller 43 together are able to enclose the pipe 12 completely for obtaining the best possible contact between the conveying rollers 43 and the pipe 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

On décrit une cintreuse de tubes portative comportant: un système d'amenée de tubes et une tête de cintrage comprenant une bague fixe agencée pour recevoir le tuyau du système d'amenée de tubes; un rouleau fixe (18) placé après la bague fixe pour porter le tube sur un côté et un galet de cintrage (19) placé après le rouleau fixe sur le côté du tube opposé à celui du rouleau fixe, ce galet de cintrage étant disposé de manière à se déplacer vers le tube pour le cintrer autour du rouleau fixe. On décrit en outre un système d'amenée de tubes (29) comportant au moins deux rouleaux (2-4, 32), au moins un des rouleaux étant entraîné en rotation par un moteur de transport (13), si bien qu'un tube, serré entre lesdits au moins deux rouleaux, est transporté dans son axe longitudinal par rotation dudit au moins un rouleau entraîné par moteur.
PCT/DK2012/050407 2011-11-08 2012-11-05 Cintreuse de tubes électrique portative WO2013068013A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE212012000199.9U DE212012000199U1 (de) 2011-11-08 2012-11-05 Tragbare elektrische Röhren-Biegevorrichtung
DKBA201400095U DK201400095U3 (da) 2011-11-08 2014-06-13 Bærbart elektrisk rørbøjningsapparat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100869 2011-11-08
DKPA201100869 2011-11-08

Publications (2)

Publication Number Publication Date
WO2013068013A2 true WO2013068013A2 (fr) 2013-05-16
WO2013068013A3 WO2013068013A3 (fr) 2013-07-25

Family

ID=47177701

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2012/050407 WO2013068013A2 (fr) 2011-11-08 2012-11-05 Cintreuse de tubes électrique portative

Country Status (3)

Country Link
DE (1) DE212012000199U1 (fr)
DK (1) DK201400095U3 (fr)
WO (1) WO2013068013A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018054431A1 (fr) * 2016-09-23 2018-03-29 Bend-It Aps Commande d'une machine de cintrage de tubes
CN110986856A (zh) * 2019-11-21 2020-04-10 中国船舶重工集团公司第七0五研究所 一种软管弯曲半径测试设备
CN111408639A (zh) * 2020-03-27 2020-07-14 宁波润爵科技有限公司 一种能自动下料的弯管机
CN114558919A (zh) * 2022-02-15 2022-05-31 上海巧工金属科技有限公司 一种航空器用水冷热弯数控弯管模具
CN115283502A (zh) * 2022-10-09 2022-11-04 苏迈特智能科技(江苏)有限公司 一种用于弯管加工的定位装置
US11590548B2 (en) 2019-09-11 2023-02-28 Ecm Industries, Llc Powered bender
CN117299902A (zh) * 2023-11-28 2023-12-29 成都飞机工业（集团）有限责任公司 一种便于调节和固定的弯管加工设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105798115B (zh) * 2016-03-30 2018-09-21 孙征 管件弯折方法

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Publication number Priority date Publication date Assignee Title
US3373587A (en) * 1966-12-08 1968-03-19 Shubin Vladimir Nikolaevich Automatic tube bending machines
US4000636A (en) * 1975-05-01 1977-01-04 Vladimir Nikolaevich Shubin Pipe bending machine
JPH089063B2 (ja) * 1985-10-21 1996-01-31 臼井国際産業株式会社 パイプ自動ベンダーにおける曲げ加工ユニット装置
AT393640B (de) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges Vorrichtung zum biegen von stabfoermigem material zu betonbewehrungselementen

Non-Patent Citations (1)

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Title
None

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018054431A1 (fr) * 2016-09-23 2018-03-29 Bend-It Aps Commande d'une machine de cintrage de tubes
US11590548B2 (en) 2019-09-11 2023-02-28 Ecm Industries, Llc Powered bender
CN110986856A (zh) * 2019-11-21 2020-04-10 中国船舶重工集团公司第七0五研究所 一种软管弯曲半径测试设备
CN110986856B (zh) * 2019-11-21 2021-08-10 中国船舶重工集团公司第七0五研究所 一种软管弯曲半径测试设备
CN111408639A (zh) * 2020-03-27 2020-07-14 宁波润爵科技有限公司 一种能自动下料的弯管机
CN114558919A (zh) * 2022-02-15 2022-05-31 上海巧工金属科技有限公司 一种航空器用水冷热弯数控弯管模具
CN115283502A (zh) * 2022-10-09 2022-11-04 苏迈特智能科技(江苏)有限公司 一种用于弯管加工的定位装置
CN115283502B (zh) * 2022-10-09 2022-12-30 苏迈特智能科技(江苏)有限公司 一种用于弯管加工的定位装置
CN117299902A (zh) * 2023-11-28 2023-12-29 成都飞机工业（集团）有限责任公司 一种便于调节和固定的弯管加工设备

Also Published As

Publication number Publication date
DE212012000199U1 (de) 2014-07-08
WO2013068013A3 (fr) 2013-07-25
DK201400095U3 (da) 2014-09-12
DK201400095U1 (da) 2014-06-27

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