EP3416761B1 - Multi-wall metal roll forming assembly - Google Patents
Multi-wall metal roll forming assembly Download PDFInfo
- Publication number
- EP3416761B1 EP3416761B1 EP16816440.8A EP16816440A EP3416761B1 EP 3416761 B1 EP3416761 B1 EP 3416761B1 EP 16816440 A EP16816440 A EP 16816440A EP 3416761 B1 EP3416761 B1 EP 3416761B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal sheet
- roll forming
- manner
- bearing element
- forming assembly
- 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.)
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- 239000002184 metal Substances 0.000 title claims description 52
- 229910052751 metal Inorganic materials 0.000 title claims description 52
- 238000000034 method Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000005570 vertical transmission Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 244000239634 longleaf box Species 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/154—Making multi-wall tubes
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
- B21D37/06—Pivotally-arranged tools, e.g. disengageable
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
Definitions
- the present invention relates to cold forming assemblies providing production of a multi-wall tube, particularly double-layered tube by means of bending metal sheet profile along a line.
- roll forming which is a cold shaping method
- the bending stations positioned successively in a spaced apart manner, provide a roll form to the metal sheet in a stepped manner.
- each bending station there are two cylindrical rollers, having a spaced apart section formed in between and extending in the horizontal axis one above the other, and there are rotating rollers extending in the vertical axis in the following section.
- the distance between the axes of the rollers and the cylinders is adjusted such that the coated metal sheet, advancing in the horizontal direction in each bending station, is bent in a stepped manner and takes the form of a tube.
- the compression force is realized in two mutual directions with the help of arms named as studs by means of the vertical upper roller and the vertical lower roller.
- the pressure, provided through the stud arms may not be equal to each other.
- the object of the present invention is to provide equal distribution of the stress applied to the metal sheet during cold shaping in multi-wall metal tube production.
- the present invention is a multi-wall metal sheet roll forming assembly comprising an upper roller where a metal sheet strip is fed in a lengthwise manner and having a rotation axis adjusted in a parallel manner to the extension axis of the metal sheet strip, and an adjacent lower roller where a processing surface, which bends the metal sheet strip during rotation, is provided between said lower roller and said upper roller.
- the metal sheet roll forming assembly comprises a bearing element which holds the upper roller in a manner allowing rotation from the two mutual rotation ends, and a drive mechanism adapted to the bearing element in a manner exerting equal compression force through the mutual rotation ends towards the lower roller.
- the equal pressure provides the metal sheet strip, which advances between the upper roller and the lower roller, to be continuously subjected to equal stresses during the cold shaping process.
- the stresses, provided on the cross section of the multi-layered tube which is the product of the metal sheet roll forming assembly are equally distributed along the length, and a product, which is compliant to the predetermined standards in accordance with the application areas, is obtained.
- a guiding housing wherein the bearing element is placed in a manner allowing movement of the bearing element in a guiding direction where the bearing element is pressed against the lower roller.
- the bearing element moves inside the guiding housing and carries the upper roller towards the lower roller.
- the bearing element is forced to move within a predetermined route, and the bearing element is facilitated to be configured in a manner providing exertion of equal force after various usages.
- the guiding direction of the guiding housing is configured in a manner following a linear path between the upper roller and the lower roller.
- the linear movement allows operation by means of the drive assembly pushing the bearing with a simple stroke.
- a casing is provided where the guiding housing is provided on the mutual side walls of the casing and where the drive assembly is aligned at the upper section of the upper roller on a ceiling section which joins the side walls.
- the casing carries the upper and lower roller by means of a compact structure.
- the drive assembly comprises a shaft extending in the guiding direction.
- the shaft transfers the force, provided by the drive assembly, to the bearing element in a linear manner.
- a motor whereto the shaft is mounted in a rotating manner from one end, and the bearing element comprises a screw housing which corresponds to a threaded free end of the shaft.
- the threaded end rotates inside the screw housing, and it provides advancing of the bearing element.
- the first arm and the second arm have mirror-symmetry with respect to the position of the drive assembly on the bearing element.
- the mirror symmetry helps the arms to provide equal load distribution.
- the drive assembly is aligned coaxially with the processing surface on the bearing element.
- the upper roller can directly transfer compression force on the lower roller at the section where process is realized.
- the effect of the vibration, formed on the upper and lower roller by the counter forces caused by the metal sheet strip on the processing surface is minimized.
- an indicator is provided which is configured in a manner illustrating the compression force, exerted by means of the drive assembly, in a visually accessible manner.
- a preferred embodiment of the invention is a tube production method by means of a multi-wall metal sheet roll forming assembly comprising the process steps of pushing the upper roller towards the lower roller by the bearing element by means of the drive assembly in a manner shifting a predetermined compression force which is equally distributed at both rotation ends; and feeding the metal sheet strip by means of aligning the metal sheet strip in a manner contacting the processing surface along an edge of the processing surface between the upper roller and the lower roller.
- the metal sheet which passes through the sheet shaping unit, is brought into tube form by means of bending, and the pressure of the upper roller onto the lower roller is distributed to the lower roller equally from a single point by means of the drive assembly instead of two arms.
- the measurability of the pressure exerted by the upper roller onto the lower roller and stability of said pressure along the line increase product quality.
- a bending station (3) has a circular indicator (2) which can be visually easily accessed when viewed from the lateral side.
- a casing (10) forming a frame is made of metal material.
- a lower roller (50) is rotatably supported in a manner extending in a horizontal rotation axis (x).
- the lower roller (50) is provided at a lower section (13) of the casing (10).
- a base (11) of the casing (10) is in planar form and it is adjusted in a manner erecting the casing (10) by means of sitting on the floor.
- a bearing element (20) and an upper roller (40) fixed to the bearing element (20) through a connection section (21) pass in a manner guided linearly from one end.
- the upper roller (40) extends in the rotation axis (x), which is the horizontal axis, in a parallel manner to the lower roller (50).
- a drive assembly (30) is fixed to a ceiling section (17) of the casing (10).
- the drive assembly (30) carries the bearing element (20) in a manner permitting advancing of the bearing element (20) at a lower free end of a shaft (35) which is in vertical position.
- the bearing element (20) has freedom to advance along the length of the guide housing (14) together with the upper roller (40) carried together inside the guide housing (14) where a first arm (22) of the bearing element (20) passes through the end thereof.
- the lower edge of the guide housing (14) defines a stopper surface (15).
- the upper roller (40) sits onto the stopper surface (15) at its lowermost position; and the advancing movement is restricted.
- FIG 2 the bending stations (3), arranged in a spaced apart manner one after the other on a floor, are illustrated together in a manner forming the roll forming assembly (1).
- a metal sheet strip (7) obtained by means of copper coating over steel, is fed to the first bending station (3) through an inlet section.
- the metal sheet strip (7) is bent in a stepped manner while passing through each bending station (3), and it takes the form of a double-layered tube.
- the upper roller (40) and the lower roller (50) shape the metal sheet strip (7) by means of exerting pressure from the upper side and from the lower side, and the vertical roller assembly having vertical rotation axis exerts pressure through the lateral sections, and they provide completion of the bending process in a stepped manner in the advancing direction.
- FIG. 3 the frontal view of the bending station (3) is given.
- the casing (10) is inverse U form.
- the drive assembly (30) is placed onto the upper section (12).
- the motor (8) extends laterally, and it is connected to a reducer (32).
- the vertical transmission element (34) bears a shaft (35) extending in the vertical direction. Screw thread is formed on the shaft (35) towards the lower end until a free end (37) thereof.
- a screw housing (36) corresponding to the upper sleeve (33) is provided at the bearing element (20) from an upper section.
- the screw housing (36) wraps the shaft (35) in sleeve form, and it transfers the rotational movement of the shaft (35) as advancing movement to the bearing element (20).
- the bearing element (20) extends towards the corresponding side walls (16) in a manner forming the first arm (22) and a second arm (25) which is symmetrical with respect to the first arm (22) in the vertical axis.
- the first arm (22) is fixed to the rotation end (44) from the lower section
- the second arm (25) is fixed to the second rotation end (45) from the lower section thereof through one each connection section (21), and the bearing assembly (20) is fixed to the upper roller (40).
- the upper roller (40) is in the form of a metal cylinder having sections which widen and narrow in a stepped manner around the processing surface (42) aligned in the intermediate section of the upper roller (40).
- a lower processing surface (53) sitting onto the lower roller (50) processing surface (42) extending in the horizontal axis in an adjacent manner to the lower side of the upper roller (40), and there is a front surface (52) sitting to the corresponding section at the upper roller (40).
- the lower roller (50) is fixedly housed in a rotatable manner to the side wall (16) by means of the first lower bearing (54), provided at the mutual ends of the lower roller (50), and by means of the second lower bearing (55).
- the metal sheet strip (7) is fed between the lower roller (50) and the upper roller (40) provided above the lower roller (50).
- the desired upper roller (40) distance is selected through the indicator (2) in accordance with the width of the metal sheet strip (7) and in accordance with the compression force to be exerted.
- the motor (8) generates high level of torque by means of the reducer (32), and it starts rotating the shaft (35) in the vertical axis which is the guiding direction (y).
- the shaft (35) moves in the screw housing (36), and it vertically moves the bearing element (20) inside the guide housing (14), and it takes the upper roller (40) to the distance, determined by means of the indicator (2), on the lower roller (50).
- each bending station (2) is adjusted in a manner providing suitable gap of the upper roller (40) with the help of the motor (8) and the drive assembly (30) in accordance with the metal sheet strip width selected for the double-layered tube production and in accordance with the tube diameter.
Description
- The present invention relates to cold forming assemblies providing production of a multi-wall tube, particularly double-layered tube by means of bending metal sheet profile along a line.
- In the production of a metal tube having a multi-wall cross section, particularly in the production of a double-layered steel tube, another metal material, for instance, a steel sheet coated with copper is horizontally fed to a roll forming assembly having a width determined in accordance with the diameter of the tube which is desired to be obtained. Obtaining a multi-layered tube by means of rolling the horizontally extending metal sheet from the end section of said metal sheet in a stepped manner is called Bundy process, and it has been disclosed by the US patent
US1431368 . - In realization of the bending process of the metal sheet, roll forming, which is a cold shaping method, is used. Accordingly, the bending stations, positioned successively in a spaced apart manner, provide a roll form to the metal sheet in a stepped manner. In each bending station, there are two cylindrical rollers, having a spaced apart section formed in between and extending in the horizontal axis one above the other, and there are rotating rollers extending in the vertical axis in the following section. The distance between the axes of the rollers and the cylinders is adjusted such that the coated metal sheet, advancing in the horizontal direction in each bending station, is bent in a stepped manner and takes the form of a tube.
- In each bending station, the compression force is realized in two mutual directions with the help of arms named as studs by means of the vertical upper roller and the vertical lower roller. However, in this applied method, the pressure, provided through the stud arms, may not be equal to each other.
- The object of the present invention is to provide equal distribution of the stress applied to the metal sheet during cold shaping in multi-wall metal tube production.
- In order to achieve said object, the present invention is a multi-wall metal sheet roll forming assembly comprising an upper roller where a metal sheet strip is fed in a lengthwise manner and having a rotation axis adjusted in a parallel manner to the extension axis of the metal sheet strip, and an adjacent lower roller where a processing surface, which bends the metal sheet strip during rotation, is provided between said lower roller and said upper roller. The metal sheet roll forming assembly comprises a bearing element which holds the upper roller in a manner allowing rotation from the two mutual rotation ends, and a drive mechanism adapted to the bearing element in a manner exerting equal compression force through the mutual rotation ends towards the lower roller. The equal pressure provides the metal sheet strip, which advances between the upper roller and the lower roller, to be continuously subjected to equal stresses during the cold shaping process. In this case, the stresses, provided on the cross section of the multi-layered tube which is the product of the metal sheet roll forming assembly, are equally distributed along the length, and a product, which is compliant to the predetermined standards in accordance with the application areas, is obtained.
- In a preferred embodiment of the invention, a guiding housing is provided wherein the bearing element is placed in a manner allowing movement of the bearing element in a guiding direction where the bearing element is pressed against the lower roller. The bearing element moves inside the guiding housing and carries the upper roller towards the lower roller. Thus, the bearing element is forced to move within a predetermined route, and the bearing element is facilitated to be configured in a manner providing exertion of equal force after various usages.
- In a preferred embodiment of the invention, the guiding direction of the guiding housing is configured in a manner following a linear path between the upper roller and the lower roller. The linear movement allows operation by means of the drive assembly pushing the bearing with a simple stroke.
- In a preferred embodiment of the invention, a casing is provided where the guiding housing is provided on the mutual side walls of the casing and where the drive assembly is aligned at the upper section of the upper roller on a ceiling section which joins the side walls. The casing carries the upper and lower roller by means of a compact structure. By means of this, a modular production system is obtained, and it becomes possible to process the metal sheet strip in a stepped manner thanks to the placement of the casings one after the other.
- In a preferred embodiment of the invention, the drive assembly comprises a shaft extending in the guiding direction. The shaft transfers the force, provided by the drive assembly, to the bearing element in a linear manner.
- In a preferred embodiment of the invention, a motor is provided whereto the shaft is mounted in a rotating manner from one end, and the bearing element comprises a screw housing which corresponds to a threaded free end of the shaft. The threaded end rotates inside the screw housing, and it provides advancing of the bearing element. By means of rotation of the shaft, even if the bearing is made of a heavy material like cast iron, it rotates inside the screw housing and it is easily guided.
- In a preferred embodiment of the invention, at the intermediate section of the bearing element, there is a first arm which bears the rotation end whereto the drive assembly exerts force and there is a second arm which bears a second rotation end. The force is distributed equally by means of a compact structure thanks to the application of drive through the intermediate section where the two arms of the drive assembly join.
- In a preferred embodiment of the invention, the first arm and the second arm have mirror-symmetry with respect to the position of the drive assembly on the bearing element. The mirror symmetry helps the arms to provide equal load distribution.
- In a preferred embodiment of the invention, the drive assembly is aligned coaxially with the processing surface on the bearing element. By means of this, the upper roller can directly transfer compression force on the lower roller at the section where process is realized. Moreover, the effect of the vibration, formed on the upper and lower roller by the counter forces caused by the metal sheet strip on the processing surface, is minimized.
- In a preferred embodiment of the invention, an indicator is provided which is configured in a manner illustrating the compression force, exerted by means of the drive assembly, in a visually accessible manner.
- In order to reach said object, a preferred embodiment of the invention is a tube production method by means of a multi-wall metal sheet roll forming assembly comprising the process steps of pushing the upper roller towards the lower roller by the bearing element by means of the drive assembly in a manner shifting a predetermined compression force which is equally distributed at both rotation ends; and feeding the metal sheet strip by means of aligning the metal sheet strip in a manner contacting the processing surface along an edge of the processing surface between the upper roller and the lower roller.
- By means of a preferred application of the subject matter invention, in the roller system comprising the upper and lower roller, the metal sheet, which passes through the sheet shaping unit, is brought into tube form by means of bending, and the pressure of the upper roller onto the lower roller is distributed to the lower roller equally from a single point by means of the drive assembly instead of two arms. The measurability of the pressure exerted by the upper roller onto the lower roller and stability of said pressure along the line increase product quality.
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- In
Figure 1 , the lateral schematic view of a bending station provided in a representative application of the subject matter multi-wall metal sheet roll forming assembly is given. - In
Figure 2 , the lateral view of a metal sheet roll forming assembly where the bending station illustrated inFigure 1 is placed one after the other is given in the condition of the metal sheet being fed. - In
Figure 3 , the frontal schematic view of a bending station used in the multi-wall metal sheet roll forming assembly is given. - In this detailed description, a roll forming assembly and method, designed for use in production of double-layered steel tube coated with copper, is explained with references to examples without forming any restrictive effect only in order to make the subject more understandable.
- With reference to
Figure 1 , a bending station (3) has a circular indicator (2) which can be visually easily accessed when viewed from the lateral side. In general, a casing (10) forming a frame is made of metal material. On a side wall (16) of the casing (10), there is a long rectangular guide housing (14) in a manner forming two columns extending between the upper section (12) and the intermediate section thereof. At the lower section of the guide housing (14), a lower roller (50) is rotatably supported in a manner extending in a horizontal rotation axis (x). The lower roller (50) is provided at a lower section (13) of the casing (10). A base (11) of the casing (10) is in planar form and it is adjusted in a manner erecting the casing (10) by means of sitting on the floor. Inside the guide housing (14), a bearing element (20) and an upper roller (40) fixed to the bearing element (20) through a connection section (21) pass in a manner guided linearly from one end. The upper roller (40) extends in the rotation axis (x), which is the horizontal axis, in a parallel manner to the lower roller (50). A drive assembly (30) is fixed to a ceiling section (17) of the casing (10). The drive assembly (30) carries the bearing element (20) in a manner permitting advancing of the bearing element (20) at a lower free end of a shaft (35) which is in vertical position. The bearing element (20) has freedom to advance along the length of the guide housing (14) together with the upper roller (40) carried together inside the guide housing (14) where a first arm (22) of the bearing element (20) passes through the end thereof. The lower edge of the guide housing (14) defines a stopper surface (15). The upper roller (40) sits onto the stopper surface (15) at its lowermost position; and the advancing movement is restricted. - In
Figure 2 , the bending stations (3), arranged in a spaced apart manner one after the other on a floor, are illustrated together in a manner forming the roll forming assembly (1). A metal sheet strip (7), obtained by means of copper coating over steel, is fed to the first bending station (3) through an inlet section. There is a horizontal roller assembly (6) between both adjacent bending stations (3). By means of this, the metal sheet strip (7) is bent in a stepped manner while passing through each bending station (3), and it takes the form of a double-layered tube. The upper roller (40) and the lower roller (50) shape the metal sheet strip (7) by means of exerting pressure from the upper side and from the lower side, and the vertical roller assembly having vertical rotation axis exerts pressure through the lateral sections, and they provide completion of the bending process in a stepped manner in the advancing direction. - In
Figure 3 , the frontal view of the bending station (3) is given. The casing (10) is inverse U form. The drive assembly (30) is placed onto the upper section (12). In the drive assembly (30), the motor (8) extends laterally, and it is connected to a reducer (32). There is a vertical transmission element (34) at the lower end of the reducer (32). The vertical transmission element (34) bears a shaft (35) extending in the vertical direction. Screw thread is formed on the shaft (35) towards the lower end until a free end (37) thereof. At the upper section (12) ceiling of the shaft (35), there is an upper sleeve (33). On the other hand, a screw housing (36) corresponding to the upper sleeve (33) is provided at the bearing element (20) from an upper section. The screw housing (36) wraps the shaft (35) in sleeve form, and it transfers the rotational movement of the shaft (35) as advancing movement to the bearing element (20). The bearing element (20) extends towards the corresponding side walls (16) in a manner forming the first arm (22) and a second arm (25) which is symmetrical with respect to the first arm (22) in the vertical axis. Thus, the first arm (22) is fixed to the rotation end (44) from the lower section, and the second arm (25) is fixed to the second rotation end (45) from the lower section thereof through one each connection section (21), and the bearing assembly (20) is fixed to the upper roller (40). The upper roller (40) is in the form of a metal cylinder having sections which widen and narrow in a stepped manner around the processing surface (42) aligned in the intermediate section of the upper roller (40). Correspondingly, there is a lower processing surface (53) sitting onto the lower roller (50) processing surface (42) extending in the horizontal axis in an adjacent manner to the lower side of the upper roller (40), and there is a front surface (52) sitting to the corresponding section at the upper roller (40). The lower roller (50) is fixedly housed in a rotatable manner to the side wall (16) by means of the first lower bearing (54), provided at the mutual ends of the lower roller (50), and by means of the second lower bearing (55). - The metal sheet strip (7) is fed between the lower roller (50) and the upper roller (40) provided above the lower roller (50). The desired upper roller (40) distance is selected through the indicator (2) in accordance with the width of the metal sheet strip (7) and in accordance with the compression force to be exerted. Accordingly, the motor (8) generates high level of torque by means of the reducer (32), and it starts rotating the shaft (35) in the vertical axis which is the guiding direction (y). The shaft (35) moves in the screw housing (36), and it vertically moves the bearing element (20) inside the guide housing (14), and it takes the upper roller (40) to the distance, determined by means of the indicator (2), on the lower roller (50). The bearing element (20) stroke is restricted by means of the upper sleeve (33) from the upper side and the bearing element (20) stroke is restricted by means of the stopper surface (15) from the lower side. In the roll forming assembly (1), each bending station (2) is adjusted in a manner providing suitable gap of the upper roller (40) with the help of the motor (8) and the drive assembly (30) in accordance with the metal sheet strip width selected for the double-layered tube production and in accordance with the tube diameter.
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- 1 Roll forming assembly
- 2 Indicator
- 3 Bending station
- 6 Vertical roller assembly
- 7 Metal sheet strip
- 8 Motor
- 10 Casing
- 11 Base
- 12 Upper section
- 13 Lower section
- 14 Guide housing
- 15 Stopper surface
- 16 Side wall
- 17 Ceiling
- 20 Bearing element
- 21 Connection section
- 22 First arm
- 23 Upper edge
- 25 Second arm
- 27 Bridge
- 30 Drive assembly
- 32 Reducer
- 33 Upper sleeve
- 34 Vertical transmission element
- 35 Shaft
- 36 Screw housing
- 37 Free end
- 40 Upper roller
- 42 Processing surface
- 44 Rotation end
- 45 Second rotation end
- 50 Lower roller
- 52 Front surface
- 53 Lower processing surface
- 54 First lower bearing
- 55 Second lower bearing
Claims (11)
- A multi-wall metal sheet roll forming assembly comprising an upper roller (40) where a metal sheet strip (7) is fed in a lengthwise manner and having a rotation axis (x) adjusted in a parallel manner to the extension axis of the metal sheet strip (7), and an adjacent lower roller (50) where a processing surface (42), which bends the metal sheet strip (7) during rotation, is provided between said lower roller (50) and said upper roller (40), characterized in that the metal sheet roll forming assembly comprises a bearing element (20) which holds the upper roller (40) in a manner allowing rotation from the two mutual rotation ends (44), and a drive mechanism (30) adapted to the bearing element (20) in a manner exerting equal compression force through the mutual rotation ends (44) towards the lower roller (50).
- A multi-wall metal sheet roll forming assembly according to claim 1, wherein a guiding housing (14) is provided wherein the bearing element (20) is placed in a manner allowing movement of the bearing element (20) in a guiding direction (y) where the bearing element (20) is pressed against the lower roller (50).
- A multi-wall metal sheet roll forming assembly according to claim 2, wherein the guiding direction (y) of the guiding housing (14) is configured in a manner following a linear path between the upper roller (40) and the lower roller (50).
- A multi-wall metal sheet roll forming assembly according to claim 3, wherein a casing (10) is provided where the guiding housing (14) is provided on the mutual side walls (16) of the casing (10) and where the drive assembly (30) is aligned at the upper section of the upper roller (40) on a ceiling section (17) which joins the side walls (16).
- A multi-wall metal sheet roll forming assembly according to any one of the preceding claims, wherein the drive assembly (30) comprises a shaft (35) extending in the guiding direction (y)
- A multi-wall metal sheet roll forming assembly according to claim 5, wherein a motor is provided whereto the shaft (35) is mounted in a rotating manner from one end, and the bearing element (20) comprises a screw housing (36) which corresponds to a threaded free end (37) of the shaft (35).
- A multi-wall metal sheet roll forming assembly according to any one of the preceding claims, wherein at the intermediate section of the bearing element (20), there is a first arm (22) which bears the rotation end (44) whereto the drive assembly (30) exerts force and there is a second arm (25) which bears a second rotation end (45).
- A multi-wall metal sheet roll forming assembly according to claim 7, wherein the first arm (22) and the second arm (25) have mirror-symmetry with respect to the position of the drive assembly (30) on the bearing element (20).
- A multi-wall metal sheet roll forming assembly according to any one of the preceding claims, wherein the drive assembly (30) is aligned coaxially with the processing surface (42) on the bearing element (20).
- A multi-wall metal sheet roll forming assembly according to any one of the preceding claims, wherein an indicator (2) is provided which is configured in a manner illustrating the compression force, exerted by means of the drive assembly (30), in a visually accessible manner.
- A tube production method by means of a multi-wall metal sheet roll forming assembly according to any one of the preceding claims, characterized by comprising the process steps of pushing the upper roller (40) towards the lower roller (50) by the bearing element (20) by means of the drive assembly (30) in a manner shifting a predetermined compression force which is equally distributed at both rotation ends (44); and feeding the metal sheet strip (7) by means of aligning the metal sheet strip (7) in a manner contacting the processing surface (42) along an edge of the processing surface (42) between the upper roller (40) and the lower roller (50).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR201513447 | 2015-10-27 | ||
PCT/TR2016/050407 WO2017074287A1 (en) | 2015-10-27 | 2016-10-27 | Multi-wall metal roll forming assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3416761A1 EP3416761A1 (en) | 2018-12-26 |
EP3416761B1 true EP3416761B1 (en) | 2020-09-30 |
Family
ID=57590778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16816440.8A Active EP3416761B1 (en) | 2015-10-27 | 2016-10-27 | Multi-wall metal roll forming assembly |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3416761B1 (en) |
CN (1) | CN108778546B (en) |
HU (1) | HUE052905T2 (en) |
MX (1) | MX2018001170A (en) |
WO (1) | WO2017074287A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109434053A (en) * | 2018-11-21 | 2019-03-08 | 中冶南方连铸技术工程有限责任公司 | The big pressure fan-shaped section of sheet billet continuous casting |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1431368A (en) | 1921-04-11 | 1922-10-10 | Harry W Bundy | Tubing |
US2397608A (en) * | 1942-02-19 | 1946-04-02 | Corydon M Johnson | Former for sheet metal parts |
EP0127127A3 (en) * | 1983-05-27 | 1985-05-02 | Rolf Mattes | Process and apparatus for the production of a tube |
US5152323A (en) * | 1988-11-22 | 1992-10-06 | Allied Tube & Conduit Corporation | Plastic-lined pipe |
EP2845658A1 (en) * | 2013-09-06 | 2015-03-11 | Nexans | Method for manufacturing multi-walled metal pipes |
CN204294621U (en) * | 2014-11-13 | 2015-04-29 | 重庆市龙山金属材料有限公司 | Rectangular steel pipe milling train |
-
2016
- 2016-10-27 EP EP16816440.8A patent/EP3416761B1/en active Active
- 2016-10-27 MX MX2018001170A patent/MX2018001170A/en unknown
- 2016-10-27 WO PCT/TR2016/050407 patent/WO2017074287A1/en active Application Filing
- 2016-10-27 HU HUE16816440A patent/HUE052905T2/en unknown
- 2016-10-27 CN CN201680071393.2A patent/CN108778546B/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
HUE052905T2 (en) | 2021-05-28 |
EP3416761A1 (en) | 2018-12-26 |
MX2018001170A (en) | 2018-04-24 |
CN108778546A (en) | 2018-11-09 |
WO2017074287A1 (en) | 2017-05-04 |
CN108778546B (en) | 2021-07-13 |
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