EP3183075B1 - Bending head, especially for an automatic bending machine - Google Patents

Bending head, especially for an automatic bending machine Download PDF

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Publication number
EP3183075B1
EP3183075B1 EP15767409.4A EP15767409A EP3183075B1 EP 3183075 B1 EP3183075 B1 EP 3183075B1 EP 15767409 A EP15767409 A EP 15767409A EP 3183075 B1 EP3183075 B1 EP 3183075B1
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EP
European Patent Office
Prior art keywords
bending
rolls
coupled
bending head
toothed
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.)
Active
Application number
EP15767409.4A
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German (de)
English (en)
French (fr)
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EP3183075A1 (en
Inventor
Ondrej BELOHLAVEK
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.)
MSV Systems CZ sro
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MSV Systems CZ sro
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Publication date
Application filed by MSV Systems CZ sro filed Critical MSV Systems CZ sro
Publication of EP3183075A1 publication Critical patent/EP3183075A1/en
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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
    • 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
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the invention relates to a bending head according to the preamble of claim 1.
  • Such a bending head is for example disclosed in JP-A-57106430 .
  • a number of automatic bending machines containing a bending head with a bending pin, a bending arm and a bending support have been disclosed, for example in the patent documents US 6 009 737 and US 5 495 740 .
  • the bending arm is along with the bending pin coupled to a bending drive for joint rotation of the bending arm and the bending pin about the longitudinal axis of the bending pin.
  • the bending arm contains a bending plate, which is adapted to move reversibly towards and away from the bending pin and which is coupled to a drive.
  • the bending head further contains a bending support, which is provided with a support plate, which is with its drive adapted to move reversibly towards a position in front of the bending pin and the bending arm, in which the bent material is situated during the bending operation.
  • the drives of the individual components of the automatic bending machine i.e. the drives of the bending arm and bending support, the drives of the positioning a gripping device of the bent material, as well as the bending drive, are coupled to the control mechanism of the automatic bending machine, which coordinates their operations, thus controlling the overall operation of the automatic bending machine.
  • CZ PV 2006-289 describes a bending head for an automatic bending machine containing a longitudinal bed with a positioning and gripping device, whereby the bending head contains a bending support with an adjustable support plate, which is provided with a shape groove for the bent material and which is coupled to a drive coupleable to the control mechanism of the automatic bending machine.
  • the support plate is mounted on a support mandrel, which is slidingly mounted in the body of the bending support, whereby it is coupled to an outlet member of a linear drive, which is coupled to a control mechanism of the automatic bending machine, the bending support being provided with a locking device of the bending plate.
  • CZ UV 24556 discloses a bending device containing a longitudinal bed with a movable positioning and gripping device, which is aligned with a bending head containing a jointly rotatable bending pin and bending arm with an adjustable bending plate.
  • the longitudinal bed is made up of longitudinal segments, whereby at one end of the longitudinal bed is selectably mounted a linear magnetic motor coupled to the positioning and gripping device or an electric servomotor with a motion belt coupled to the positioning and gripping device, while at the other end of the longitudinal bed is located a vertically and laterally adjustable bending head, whose bending arm is selectably situated on the right or left side of the bending head, whereby the bending plate on the bending arm is selectably composed of a bending stone or a bending roll or a bending roll with defined rolling away along the bent material during the bending operation.
  • a common disadvantage of the bending heads known so far from the background art is the fact that without substantial rearrangements they only enable to perform bends in one direction, i.e. by rotating the bending roll either only to the right, or only to the left. If need arises to change the direction of bending, it is necessary either to use two separate bending heads with opposing rotation direction of the bending roll, which is demanding in economic terms and decreases the efficient utilization of the two bending heads, or it is necessary to rearrange the bending head for the opposite direction of rotation of the bending roll, which is economically challenging, since during the rearrangement the bending machine is blocked and out of operation, or it is necessary to turn the bent material, which places increased demands on the handling devices and the workspace around the bending machine, because a number of bent products have a relatively large length.
  • JP A 57106430 is known a bending head, especially for an automatic bending machine, containing a pair of bending rolls and a bending support, whereby the bending rolls are mounted rotatably about their mutually parallel longitudinal axes on a bending stirrup, which is situated with its length perpendicularly to the longitudinal axes of the bending rolls, wherein each of the bending rolls is aligned with a means of a mutual forced rotary coupling of the two rolls and at least one of the rolls is coupled to a drive of its rotation.
  • This solution allows bends in both directions but the design is complicated.
  • the aim of the invention is to allow selectable and fast utilization of bends in both directions on a single device without the necessity of rearrangement, while maintaining productivity, accuracy, sufficient simplicity and long service life of the device.
  • a bending head especially for an automatic bending machine, whose principle consists in that each of the bending rolls is aligned with a means of mutual forced rotary coupling of both rolls and at least one of the rolls is coupled to a drive of its rotation, whereby a bending stirrup is mounted linearly reversibly slidingly in the direction of its length in a rotary bending carrier, which is rotatably mounted about its longitudinal axis, which is parallel to the longitudinal axes of both rolls and is situated in a plane interlaid by the longitudinal axes of both rolls and at the same time it is perpendicular to the direction of the length of the bending stirrup, in a bracket, which is rectilinearly reversibly slidingly mounted on the frame the bending head in the direction which is perpendicular to the longitudinal axes of both rolls and the rotary bending carrier and parallel to the direction of the length of the bending stirrup, all in a mutual initial position "zero" during insert
  • Fig. 1 shows an overall view of the bending head
  • Fig. 2a represents an overall view of the bending head as set during bending to the left
  • Fig. 2b shows an overall view of the bending head as set during bending to the right
  • Fig. 3a is a plan view of the bending head as set before the beginning of bending to the right
  • Fig. 3b a plan view of the bending head when bending to the right
  • Fig. 4a is a plan view of the bending head as set before the beginning of bending to the left
  • Fig. 3b is a plan view of the bending head during bending to the left.
  • the invention will be set forth in the following description of an example of embodiment of a bending head for an automatic bending machine, which is provided with a gripping device and optionally also with a positioning device of the bent material, whereby the individual components of the machine, including the bending head, are provided with drives and are connected to the control mechanism of the bending machine, so that bends are formed in the desired location of the bent material, in a desired direction and at the desired angle.
  • the bending head according to the invention is designed for performing bends in both directions, i.e.
  • a bending head which contains a pair of bending rolls 1 and 2 , which are mounted rotatably about their longitudinal axes 10 , 20 in a common bending stirrup 3 , which is situated with its length transversely to the longitudinal axes 10 , 20 of both rolls 1 , 2 .
  • Each of the bending rolls 1 , 2 is aligned with a means of mutual forced rotary coupling of both rolls 1 , 2 , which is in the illustrated example of embodiment composed of a toothed wheel 11 , 21 aligned with each of the rolls 1 , 2 , whereby the toothed wheels 11 , 21 are in mutual engagement.
  • At least one of the rolls 1 or 2 is coupled to a drive of its rotation, in the illustrated example of embodiment one of the toothed wheels 11 , 21 is coupled to the first drive of its rotation, which is in the illustrated example of embodiment composed of a controlled first linear drive 4 , whose movable part is coupled to the first toothed comb 40 , which is reversibly slidingly mounted in the frame 0 of the bending head and which is by its teeth aligned with one of the toothed wheels 11 , 21 .
  • the first linear drive 4 is provided with a system of measuring the position of its movable part for controlled joint turning of the bending rolls 1 , 2 about their longitudinal axes 10 , 20 .
  • the second toothed wheel of the pair of toothed wheels 11 , 21 is aligned with a securing toothed comb 41 , which is mounted linearly reversibly slidingly towards and away from the second toothed wheel of the pair of toothed wheels 11 , 21 in the frame 0 of the bending head, whereby it is coupled to the second linear drive 42 .
  • Both linear drives 4 , 42 are coupled to a source of energy and are connected to the control mechanism of the bending head, or, more specifically, of the bending machine.
  • first toothed comb 40 and/or the securing toothed comb 41 have been replaced by rotary means, e.g., by toothed wheels with a rotary drive.
  • the bending rolls 1 , 2 are provided along their circumference with a well-known shape groove 13 , 23 for the bent material, such as a tube, a pipe, a bar etc.
  • the bending rolls 1 , 2 are also provided with mutually axially symmetrically arranged lighweight sections 12 , 22 in its outer circumference to facilitate inserting and removing the bent material between the shape grooves 13 , 23 of the bending rolls 1 , 2 , the bending rolls 1 , 2 being turned with their lighweight sections 12 , 22 against each other.
  • the mutual turning of the bending rolls 1 , 2 is carried out by the rectilinear motion of the first toothed comb 40 after the securing toothed comb 41 is shifted away from the second toothed wheel of the pair of toothed wheels 11 , 21 .
  • the bending stirrup 3 is mounted rectilinearly reversibly slidingly in the direction of its length in a rotary bending carrier 5 .
  • the rotary bending carrier 5 is mounted in the bracket 6 rotatably about its longitudinal axis 50 , which is parallel to the longitudinal axes 10 , 20 of both rolls 1 , 2 and lies in a plane interlaid by the longitudinal axes 10 , 20 of both rolls 1 , 2 and at the same time it is perpendicular to the direction of the length of the bending stirrup 3 .
  • the rotary bending carrier 5 is coupled to a bending drive 51 , e.g. through a gearbox 52 .
  • the bracket 6 is mounted on the frame 0 of the bending head rectilinearly reversibly slidingly in the direction X , which is perpendicular to the longitudinal axes 10 , 20 , 50 of both rolls 1 , 2 and the rotary bending carrier 5 and parallel to the direction of the length of the bending stirrup 3 , all in a mutual initial position "zero" during inserting and removing the bent material into and from the rolls 1 , 2 , see 0, Fig. 3a and 4a , whereby the bracket 6 is coupled to an adjustable linear drive 7 , which secures rectilinear reversible motion of the bracket 6 on the frame 0 of the bending head.
  • the bracket 6 is mounted on the frame 0 of the bending head by means of a pair of parallel dovetail guides 60 , which provide sufficiently solid, firm, stable and accurate mounting of the bracket 6 on the frame 0 of the bending head.
  • a well-known bending support 8 On the frame 0 of the bending head is further mounted a well-known bending support 8 , which is aligned with the bending rolls 1 , 2 and which is used to absorb and eliminate the reaction forces occurring during bending.
  • the bending support 8 is tiltable about the axis of rotation 80 which is parallel to the direction X of the rectilinearly reversibly sliding motion of the bracket 6 on the frame 0 of the bending head.
  • the bending support 8 is coupled to a drive 81 for the purpose of being tilted down.
  • the bending head according to the invention operates such that the bending stirrup 3 and the bending rolls 1 , 2 are set in an initial position in which the bending stirrup 3 is situated with its length in the direction X of the rectilinear reversibly sliding motion of the bracket 6 on the frame 0 of the bending head and in which the plane, interlaid by the longitudinal axes 10 20 of the bending rolls 1 , 2 is parallel to the direction X of the rectilinear reversibly sliding motion of the bracket 6 on the frame 0 of the bending head ( Fig. 1 , 3a , 4a ).
  • the longitudinal axis 50 of rotation of the rotary bending carrier 5 is situated in a plane interlaid by the longitudinal axes 10 20 of the bending rolls 1 , 2 .
  • the securing toothed comb 41 is drawn away from the toothed wheel 21 of the second bending roll 2 and by the motion of the first toothed comb 40 both rolls 1 , 2 turn axially symmetrically about their longitudinal axes 10 , 20 with their lighweight sections 12 , 22 against each other to allow inserting the bent material between the rolls 1 , 2 .
  • both rolls 1 , 2 turn about their longitudinal axes 10 , 20 to their initial position by reversible motion of the first toothed comb 40 , by which means the bent material is fastened between the rolls 1 , 2 for the bending operation. Equivalently, the bent material is removed from the rolls 1 , 2 .
  • the bending support 8 is tilted down, and so it does not impede material handling. Subsequently, the securing toothed comb 41 returns into contact with the toothed wheel 21 of the second bending roll 2 .
  • the bracket 6 is shifted in the direction X to the right or to the left to a position in which the longitudinal axis 50 of rotation of the rotary bending carrier 5 lies exactly in the longitudinal axis 10 or 20 of one of the bending rolls 1 or 2 ( Fig. 3a , 4a ).
  • This bending roll 1 or 2 whose longitudinal axis 10 or 20 is set by the motion of the bracket 6 to coincide with the longitudinal axis 50 of rotation of the rotary bending carrier 5 , then during the subsequent bending operation, which is performed by rotating the rotary bending carrier 5 about its longitudinal axis 50 in the corresponding direction (indicated by the thick arrow in Fig.
  • the bending stirrup 3 in which the bending stirrup 3 is located with its length in the direction X of the rectilinear reversibly sliding motion of the bracket 6 on the frame 0 of the bending head and in which the plane, interlaid by the longitudinal axes 10 20 of the bending rolls 1 , 2 , is parallel to the direction X of the rectilinear reversibly sliding motion of the bracket 6 on the frame 0 of the bending head, the change of the direction of bending being carried out merely by rectilinear shifting the bracket 6 to a new position in which the longitudinal axis 50 of rotation of the rotary bending carrier 5 is situated in the longitudinal axis 20 or 10 of the second bending roll 2 or 1 , or the rotary bending carrier 5 is set in such a manner that during the subsequent bending operation the second bending roll 2 or 1 revolves along a circular track around the first bending roll 1 or 2 ( Fig. 2a , 2b , 3b , 4b ) due

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP15767409.4A 2014-08-20 2015-08-10 Bending head, especially for an automatic bending machine Active EP3183075B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2014-29891U CZ27405U1 (cs) 2014-08-20 2014-08-20 Ohýbací hlava, zejména pro automatický ohýbací stroj
PCT/CZ2015/000089 WO2016026472A1 (en) 2014-08-20 2015-08-10 Bending head, especially for an automatic bending machine

Publications (2)

Publication Number Publication Date
EP3183075A1 EP3183075A1 (en) 2017-06-28
EP3183075B1 true EP3183075B1 (en) 2018-10-03

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EP15767409.4A Active EP3183075B1 (en) 2014-08-20 2015-08-10 Bending head, especially for an automatic bending machine

Country Status (3)

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EP (1) EP3183075B1 (cs)
CZ (1) CZ27405U1 (cs)
WO (1) WO2016026472A1 (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107803441B (zh) * 2017-11-30 2023-09-15 中冶建工集团有限公司 自动钢筋弯箍装置
CN108838253B (zh) * 2018-06-12 2024-03-08 珠海格力智能装备有限公司 折弯机
CN110280687B (zh) * 2019-07-30 2020-05-05 长江大学 一种直压式钢筋弯箍装置
CN111136199A (zh) * 2020-03-10 2020-05-12 镇江市高等专科学校 一种手持液压缸钢筋弯曲装置
CN111872274B (zh) * 2020-07-31 2022-04-22 中冶建工集团有限公司 钢筋矫直、折弯、剪切连续生产装置
CN112496198B (zh) * 2020-11-04 2022-08-09 广东博智林机器人有限公司 一种折弯机构和自动折弯机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1306344A (cs) 1971-03-10 1973-02-07
JPS57106430A (en) 1980-12-22 1982-07-02 Matsushita Refrig Co Euquipment for meanderingly bending tube
DE9316052U1 (de) 1993-10-21 1994-01-13 Schwarze, Rigobert, Dipl.-Ing., 51109 Köln Rohrbiegemaschine
US6009737A (en) 1997-07-17 2000-01-04 Arvin Industries, Inc. Tube bender
JP4418551B2 (ja) 1999-03-02 2010-02-17 株式会社オプトン 曲げ加工装置
CZ24556U1 (cs) * 2012-09-26 2012-11-12 Msv Systems Cz S.R.O. Ohýbací zařízení

Non-Patent Citations (1)

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Title
None *

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Publication number Publication date
EP3183075A1 (en) 2017-06-28
WO2016026472A1 (en) 2016-02-25
CZ27405U1 (cs) 2014-10-06

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