WO2022064040A1 - Rouleau tubulaire, alimentation à rouleaux et procédé de fabrication d'un rouleau tubulaire - Google Patents

Rouleau tubulaire, alimentation à rouleaux et procédé de fabrication d'un rouleau tubulaire Download PDF

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Publication number
WO2022064040A1
WO2022064040A1 PCT/EP2021/076509 EP2021076509W WO2022064040A1 WO 2022064040 A1 WO2022064040 A1 WO 2022064040A1 EP 2021076509 W EP2021076509 W EP 2021076509W WO 2022064040 A1 WO2022064040 A1 WO 2022064040A1
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WO
WIPO (PCT)
Prior art keywords
roller
tube
bearing
roll
feed
Prior art date
Application number
PCT/EP2021/076509
Other languages
German (de)
English (en)
Inventor
Urs Fankhauser
Erich Lohner
Original Assignee
Zehnder & Sommer Ag
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 Zehnder & Sommer Ag filed Critical Zehnder & Sommer Ag
Publication of WO2022064040A1 publication Critical patent/WO2022064040A1/fr

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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
    • 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
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material

Definitions

  • the present invention relates to a tube roll, in particular for a roll feed, a roll feed comprising at least one tube roll and a method for producing a tube roll.
  • Roller feeds are used, for example, for conveying and feeding, in particular for the clocked feeding of workpieces such as band or strip material.
  • roller feeds are used in punching applications.
  • the workpiece is fed in a clocked manner, with the clocking of the feed being synchronized with a punching tool.
  • Roller feeds are also known from other areas of application.
  • a roller feed can have a profiled roller and emboss or stamp the corresponding profile into the workpiece as the workpiece is advanced.
  • the principle of the roller feed is based on at least two rollers, of which at least a first roller is arranged on a first side (e.g. above) of the workpiece to be conveyed and a second roller is arranged on an opposite side (e.g. below) of the workpiece to be conveyed, as shown in Fig 1 shown.
  • the roller feed comprises two rollers, these are typically arranged opposite one another.
  • a roller feed may comprise three rollers (or a different number of rollers), the rollers being arranged offset from one another, so that the workpiece is conveyed through the rollers in a type of wave motion.
  • At least one of the rollers is a driven roller.
  • the workpiece is introduced into a gap formed between the rollers.
  • the workpiece is then formed by a parallel rotation of the rollers advanced / promoted.
  • the speed of rotation of the rollers determines the conveying or feed speed.
  • rollers typically include a roller body on which bearing shafts are attached in a rotationally fixed manner on both sides.
  • the bearing shafts are used to mount the roller, to deliver an output torque and/or to absorb a drive torque.
  • each roll is stored separately.
  • a drive shaft of a motor or a transmission, which transmits a drive torque to the roller, or an output shaft, which absorbs an output torque from the roller, must be additionally mounted. In any case, four bearing points must therefore typically be provided for a roller arrangement.
  • the roller body typically has corresponding bearing shaft receptacles, which each engage with a corresponding bearing shaft in a form-fitting, form-fitting and material-fitting manner and/or in a form-fitting and force-fitting manner.
  • the bearing shaft mounts and corresponding mounting flanges of the bearing shafts must be manufactured with high precision and low tolerances. This makes production expensive and complex. As a rule, many process steps are necessary to produce a conventional roller. As a result, the delivery times for conventional rollers are long and the number of suppliers is small.
  • the diameter of the bearing shafts in particular the diameter in the area where the drive torque is absorbed or the diameter in the area where the output torque is output, is small. In the event of overload or peak loads, this can lead to damage, in particular to the roller (or the bearing shafts) breaking. In addition, the connection between the roller body and the bearing shaft is often prone to damage, such as can be caused by overload.
  • the object of the present invention is to eliminate at least some of the aforementioned disadvantages.
  • a roller and a roller feed are to be provided which at least partially overcome the disadvantages.
  • the roller should have a simplified structure and be easy and inexpensive to manufacture.
  • a roller feed is to be provided, which enables simplified installation or easy replacement of the roller(s).
  • the tube roller includes a first end and a second end, and a radially circumferential roller surface disposed between the first and second ends and configured to contact a workpiece.
  • the rolling surface can in particular be a cylindrical rolling surface.
  • the tube roller is set up in particular for a roller feed.
  • the workpiece that comes into contact with the rolling surface can be a band or strip material which—if the tube roller is built into a roller feed—is conveyed/advanced by means of the tube roller. The conveying or feed movement is transmitted from the roller to the workpiece via the roller surface.
  • the rolling surface has an outer diameter d a (convex area).
  • the rolling surface with outside diameter d a can be profiled.
  • the rolling surface can have projections and/or recesses which profile and/or punch a conveyed workpiece during conveying.
  • the rolling surface of the tube roller can have a positive shape or a negative shape.
  • the outer diameter d a of the rolling surface can be in the range from 30 mm to 200 mm, preferably in the range from 44 mm to 150 mm, more preferably in the range from 60 mm to 120 mm and most preferably in the range from 80 mm to 100 mm.
  • the axial length of the rolling surface (or the feed passage width) can be in the range from 250 mm to 2000 mm, preferably in the range from 320 mm to 1600 mm, more preferably in the range from 480 mm to 1200 mm and most preferably in the range of 640 mm up to 820 mm.
  • the tube roller has a hollow inner area in the area of the rolling surface, which has an inner diameter di (concave area).
  • the rolling surface and hollow interior are substantially concentric (manufacturing tolerances included).
  • the tube roller may have been made from a tube having a hollow interior with an inner diameter.
  • the inside diameter di of the hollow interior of the tube roll can correspond to the inside diameter of the hollow interior of the tube, or the interior of the tube roll can be finished (e.g. by machining, grinding, or other manufacturing processes) so that the inside diameter di of the hollow interior of the tube roll is greater than the inside diameter of the inside of the pipe.
  • the tube from which the tube roller may be made may be welded or seamless tube.
  • the tube may have been made by any of the following processes: extrusion, continuous casting, centrifugal casting, cross rolling, plug rolling, stretch reducing, a push bench process, a pilger step process, and/or the like. It is also possible for the tube to be a machined tube.
  • the tube roller also includes a first bearing surface which is designed to interact with a bearing in order to support the tube roller so that it can rotate about an axis of rotation.
  • the first bearing surface has a diameter di a that satisfies the following condition: di ⁇ dia ⁇ d a .
  • the first bearing surface can in particular be set up with a rotary bearing, such as a plain bearing, a roller bearing, or the like to cooperate. If the bearing surface interacts with a plain bearing, for example, the bearing surface can have a corresponding surface quality in order to rotate radially in a plain bearing bush of the plain bearing. If the bearing surface is to interact with a roller bearing, the bearing surface can accommodate a bearing ring of the roller bearing (eg with a positive fit and/or with a force fit).
  • the diameter of the first bearing surface is greater than or equal to the inner diameter di of the hollow interior of the tube roller and less than or equal to the diameter d a of the rolling surface.
  • the first bearing surface can thus be formed integrally with the tube roller.
  • the bearing surface may have been turned onto the tube roller, since the diameter di a of the first bearing surface (seen in the radial direction) is in the range of the wall thickness of the area in which the roller surface is arranged.
  • the bearing surface can also have been produced by other production processes (eg by cutting or grinding).
  • the first bearing surface has a very large diameter compared to conventional rolls, so that the risk of damage and/or overload fracture of the tube roll is minimized.
  • the first bearing surface is not arranged on a separate bearing shaft, so that the risk of damage, e.g. due to overload, can be further reduced.
  • the tube roller can further comprise a second bearing surface, for rotatably supporting the tube roller, which is opposite the first bearing surface in the axial direction.
  • the first bearing surface can be arranged in the vicinity of the first end or at the first end and the second bearing surface can be arranged in the vicinity of the second end or at the second end.
  • the second bearing surface can in particular be set up to interact with a rotary bearing, such as a plain bearing, a roller bearing or the like. If the bearing surface interacts with a plain bearing, for example, the bearing surface can have a corresponding surface quality in order to rotate radially in a plain bearing bush of the plain bearing. If the bearing surface is to interact with a roller bearing, the bearing surface can accommodate a bearing ring of the roller bearing (e.g. in a positive and/or non-positive manner).
  • the second bearing surface has a diameter dib that satisfies the following condition: di ⁇ dib sd a .
  • the diameter of the second bearing surface is greater than or equal to that
  • the second bearing surface can thus be formed integrally with the tube roller.
  • the bearing surface may have been turned onto the tube roller, since the diameter dib of the second bearing surface (seen in the radial direction) is in the range of the wall thickness of the area in which the roller surface is arranged.
  • the bearing surface can also have been produced by other production processes (eg by cutting or grinding).
  • the second bearing surface has a very large diameter compared to conventional rollers, so that the risk of damage and/or overload fracture of the tube roller is minimized.
  • first bearing surface and the second bearing surface are optionally configured such that dib ⁇ di a applies.
  • This enables the tube roller to be easily installed in a roller feed.
  • the tube roller with the small bearing diameter dib of the second bearing surface in front can be pushed into or removed from the roller feed in the axial direction.
  • only an installation opening for the tube roller must be provided in the roller feed, which is dimensioned such that the tube roller fits through the installation opening.
  • the tube roller has only one bearing surface (ie the first bearing surface)
  • the tube roller is preferably inserted into a roller slot with the first bearing surface first. It is also possible to insert the tube roller in the opposite direction.
  • the diameter di a of the first bearing surface and/or the diameter dib of the second bearing surface can be an inside diameter.
  • the first bearing surface and/or the second bearing surface can be arranged in the area of the rolling surface.
  • the bearing surface(s) and the rolling surface can thus be formed in an integral component. Since in this case the first bearing surface and/or the second bearing surface is an inner surface, almost the entire length of the tube roller (from the first end to the second end) can be used as a rolling surface. This makes it possible to provide very short tube rollers, since no additional installation space has to be provided for the bearing surfaces in the axial direction.
  • the diameter di a of the first bearing surface and/or the diameter dib of the second bearing surface can be an outside diameter. It is also possible that the diameter di a is an outside diameter and the diameter dib is an inside diameter. It is also possible that the diameter dib is an outside diameter and the diameter dia is an inside diameter.
  • the first bearing surface is arranged between the first end of the tubular roller and the rolling surface and/or the second bearing surface is arranged between the second end of the tubular roller and the rolling surface.
  • the bearing surface(s) and the rolling surface can thus be formed in an integral component. Since in this case the first bearing surface and/or the second bearing surface is an external surface, the bearing surface is/are easily accessible and can be manufactured easily (eg by turning or grinding). This enables cost-effective production.
  • the tubular roller can comprise a shaft receptacle which is set up to receive a bearing shaft in a rotationally fixed manner.
  • a bearing shaft can be accommodated in a rotationally fixed manner in the shaft receptacle.
  • the non-rotatable mount can be positive, non-positive and/or material, for example by screwing, pressing, welding and/or other shaft connection techniques.
  • the bearing shaft can, for example, interact with a roller coupling, such as a Schmidt coupling, which makes it possible to adjust the tube roller in the radial direction and at the same time couples the roller to a shaft that is immovable in the radial direction.
  • a roller coupling such as a Schmidt coupling
  • the tubular roller can include a centering surface which is set up to receive a rotor of an electric motor in a rotationally fixed manner.
  • the centering surface then has an inside diameter or an outside diameter, with the diameter of the centering surface dz fulfilling the following condition: di ⁇ dz ⁇ da and optionally also fulfilling the following condition: di ⁇ dz ⁇ dla
  • the centering surface is a radially circumferential surface. If the centering surface has an inner diameter (i.e., it is concave), the rotor may be a rotor of an external rotor electric motor. If the centering surface has an outer diameter (i.e. it is convex), the rotor may be a rotor of an internal rotor electric motor.
  • the diameter of the centering surface is greater than or equal to the inside diameter di of the hollow interior of the tubular roller and smaller than the diameter d a of the rolling surface.
  • the centering surface can thus be formed integrally with the tube roller.
  • the centering surface may have been turned onto the tube roller, since the diameter d z of the centering surface (seen in the radial direction) is in the range of the wall thickness of the area in which the roller surface is arranged.
  • the centering surface can also have been produced by other production processes (eg by cutting or grinding).
  • the centering surface has a very large diameter compared to conventional rollers or drive shafts, so that the risk of damage and/or overload fracture of the tube roller is minimized.
  • the tube roller can be easily installed in a roller feed (e.g. by pushing it in axially), since the diameter d z of the centering surface is smaller than the diameter di a of the first storage area. If the centering surface has an inner diameter, the condition di ⁇ dl a ⁇ d z can be met accordingly, in order to enable simple installation.
  • a clamping element can be arranged between the centering surface and the rotor of the electric motor.
  • the clamping element is, for example, a centering clamping element, such as a cone clamping element, so that the rotor is centered relative to the tube roller when the rotor is held in a rotationally fixed manner.
  • the centering surface is optionally formed on the first end of the tube roller.
  • the centering surface can be formed integrally with the tube roller and, for example, turned on at the first end of the tube roller. The centering surface enables the tube roller to be centered exactly. In this way, optimal concentricity of the tube roller can be achieved.
  • the tube roller can also include a gear element receptacle, which makes it possible to connect a gear element (for example a toothed wheel) to the tube roller in a torque-proof manner.
  • the transmission element receptacle is preferably arranged at the second end of the tube roller.
  • the hollow inner area of the tube roller can be set up to at least partially accommodate an external rotor motor and/or a rotary encoder.
  • the encoder is preferably used to control an electric motor that drives the tube roller.
  • a first part of the encoder eg an optical sensor surface
  • a second part of the rotary encoder can be, at least partially, in the tube roller be arranged without rotating with the tube roller. The relative movement between the first part of the encoder and the second part of the encoder can be detected and used to control an electric motor.
  • the rotary encoder By arranging the rotary encoder, at least partially, in the hollow interior, the overall size of a roller feed can be minimized, since the hollow interior is now available as additional installation space.
  • the hollow inner area of the tube roller can also be set up to accommodate further or other components of a roller feed, such as a temperature sensor, a cable bushing, and the like.
  • the roller feed comprises at least a first roller and a second roller, the first and the second roller being arranged in such a way that they are set up to convey a workpiece with the roller feed.
  • the workpiece is introduced into a gap formed between the rollers.
  • the workpiece is then advanced/conveyed by a parallel rotation of the rollers.
  • the speed of rotation of the rollers determines the conveying or feed speed.
  • the roll feed is adapted to be driven by a motor (e.g. an electric motor).
  • the motor can be part of the roller feed or can be coupled to the roller feed to drive it.
  • the roller feed is configured in such a way that at least the second roller can be driven.
  • the first roll and/or the second roll is a tubular roll according to the invention, as has been described above.
  • all the advantages mentioned can be achieved with the roller feed.
  • the installation or replacement of the rolls can be simplified.
  • the tube rollers are less susceptible to damage, especially damage caused by overloading.
  • the manufacturing and maintenance costs of the roller feed can be reduced.
  • the roll feeder may include a body that houses the first roll and the second roll.
  • the body has a first bearing surface associated with a first bearing surface of the tube roller.
  • the body has a second bearing surface associated with a second bearing surface of the tube roll for rotatably supporting the tube roll in the body. between the respective ok
  • a bearing e.g. a roller bearing, a plain bearing, Certainly can be arranged on the bearing surfaces of the tubular roller and the associated bearing surface of the base body.
  • the base body can be made in several pieces and can include a housing, for example.
  • the base body can be designed in such a way that the at least one tubular roller can be removed from the base body in the axial direction.
  • the base body can have at least one installation opening through which a tubular roller can be inserted or removed axially.
  • the installation opening can be closed with a cap, in particular a centered cap, with the centered cap preferably comprising a bearing surface of the base body. This means that the tube rollers can be installed/exchanged easily.
  • the roll feed may include a gear assembly and wherein a first gear (e.g., a gear) is associated with the first roll and a second gear (e.g., a gear) is associated with the second roll.
  • a rotational movement of the second (actively driven) roller can be transmitted via the second gear element to the first gear element and then to the first roller.
  • the transfer can be direct or indirect.
  • the gear arrangement can be a multi-stage gear and/or can include clutches.
  • the roll feed may include a roll clutch (e.g. a Schmidt clutch) which enables the first roll to be shifted in the radial direction relative to the second roll.
  • the roller coupling is preferably designed in such a way that the first roller can be adjusted in the radial direction and the roller is at the same time coupled to a shaft that is immovable in the radial direction.
  • the gap between the first and second rolls can be adjusted to a material thickness of the conveyed/feed workpiece.
  • the roller feed optionally includes an actuator (eg, an electric motor, a hydraulic actuator, a pneumatic actuator, a solenoid, and/or the like) to actively radially adjust the first roller relative to the second roller.
  • an actuator eg, an electric motor, a hydraulic actuator, a pneumatic actuator, a solenoid, and/or the like
  • a contact pressure from the roller to the workpiece can also be set via the actuator.
  • the actuator makes it easier to insert the workpiece between the rollers.
  • the roller feed may include a rotary encoder which is used to control the electric motor, and the rotary encoder is optionally at least partially accommodated in the hollow interior of the tube roller. Thus, the size of the roll feed can be minimized.
  • the objects are achieved, at least in part, by a method for producing a tube roller.
  • the procedure includes the following steps, which can be performed in any order:
  • first bearing surface which is adapted to cooperate with a bearing to support the tube roller rotatably about an axis of rotation, the first bearing surface having a diameter di a which satisfies the following condition: di ⁇ di a ⁇ d a .
  • the method can include steps for producing a second bearing surface, an intermediate surface, a centering surface and/or shaft mounts.
  • Fig. i shows a schematic representation of a roll feed as is known from the prior art
  • Fig. 2 shows a schematic functional principle of a roll feed
  • 3A shows a schematic representation of a tube roller according to the invention
  • 3B shows a schematic representation of another tube roller according to the invention
  • FIG. 4A shows a schematic representation of a roll feed according to the invention
  • FIG. 4B shows the roll feed of FIG. 4A during assembly/disassembly
  • Fig. 5 shows a schematic representation of a further roll feed according to the invention
  • Fig. 6 shows a schematic representation of a further roller feed according to the invention.
  • FIG. 7 shows a schematic sequence of a method for producing a tube roller.
  • FIG. 1 shows a schematic representation of a roller feed 1 as is known from the prior art.
  • the roller feed 1 comprises two rollers 100, 150.
  • a first roller 150 is arranged above and a second roller 100 is arranged below a workpiece to be conveyed.
  • the second roller 100 is driven via an electric motor 70 and is coupled to the first roller 150 via an output shaft and a gear arrangement (here a spur gear) 20 .
  • the first roller 150 can be adjusted in the radial direction by means of a Schmidt coupling 90 in order to be able to set a gap between the first and the second roller.
  • the conventional rollers 100, 150 comprise a roller body 110 on which bearing shafts 180a, 180b are fixed in a rotationally fixed manner on both sides.
  • the bearing shafts 180a, 180b are used to mount the roller 100, 150, to deliver an output torque and/or to absorb a drive torque.
  • the roller 100 is connected to the rotor 72 of the electric motor 70 via the bearing shaft 180a and the drive shaft 73 .
  • the drive torque is transmitted to the roller 150 via the gear arrangement 20 .
  • the roller 100 and the corresponding drive/electric motor are assigned five bearings 200a, 200b, 220, 270a, 270b (roller bearings here).
  • the roller 150 is associated with three bearings 222, 250a, 250b.
  • the diameter of the bearing shafts in particular the diameter in the area where the drive torque is absorbed or the diameter in the area where the output torque is output, is small. In the event of overload or peak loads, this can lead to damage, in particular to the roller (or the bearing shafts) breaking. In addition, the connection between the roller body and the bearing shaft is often prone to damage, such as can be caused by overload. If a roller is damaged, it must be replaced. For this purpose, extensive dismantling of the roll feed 1 is necessary, since the rolls cannot simply be removed axially from the roll feed due to the bearing.
  • roller feed 2 shows a schematic functional principle of a roller feed 2 according to the invention.
  • the principle of the roller feed 2 is based on at least two rollers 300, 350. At least one of the rollers is designed as a tubular roller according to the invention.
  • a first roller 300 is arranged on a first side of a workpiece 10 to be conveyed (here: above) and a second roller 350 is arranged on a second side of the workpiece 10 to be conveyed (here: below).
  • the orientation of the roller feed is arbitrary, so that the workpiece can be conveyed horizontally, vertically or at any angle. If the roller feed comprises two rollers, these are typically arranged opposite one another. Other arrangements are also possible.
  • a roller feed may comprise three rollers (or a different number of rollers), the rollers being arranged offset from one another, so that the workpiece is conveyed through the rollers in a type of wave motion.
  • At least one of the rollers 300, 350 is a driven roller.
  • the workpiece 10 is introduced into a gap formed between the rollers 300,350.
  • the workpiece 10 is then advanced/conveyed in the X direction by a parallel rotation of the rollers in the direction of rotation CD 3O O, CD 35 O.
  • the speed of rotation of the rollers determines the conveying or feed speed.
  • roller 300 can interact with a roller clutch, such as a Schmidt clutch, which enables the roller to be adjusted in the radial direction Z.
  • a roller clutch such as a Schmidt clutch
  • the gap between two rollers can be adjusted to a material thickness of the workpiece 10 being conveyed/advanced.
  • a simplified insertion of the workpiece between the rollers is made possible.
  • FIG. 3A shows a schematic representation of a tube roller 300 according to the invention.
  • the tube roller 300 comprises a first end 305a and a second end 305b.
  • a radially circumferential rolling surface 302 is disposed between the first end 305a and the second end 305b and is adapted to contact a workpiece.
  • the rolling surface 302 has an outside diameter d a . This can be in the range from 30 mm to 200 mm, preferably in the range from 44 mm to 150 mm, more preferably in the range from 60 mm to 120 mm and most preferably in the range from 80 mm to 100 mm.
  • the tube roller 300 has a hollow inner area 304 which has an inner diameter di.
  • the rolling surface 302 and the hollow interior 304 are arranged substantially concentrically.
  • the tube roller has a first bearing surface (see FIGS. 4A, 309a), which is set up to interact with a bearing in order to support the tube roller 300 so that it can rotate about an axis of rotation 301.
  • the first bearing surface has a diameter di a that satisfies the following condition: di ⁇ dia ⁇ d a .
  • the diameter di a of the first bearing surface of the tube roller 300 shown in FIG. 3A is an inside diameter.
  • the first bearing surface is arranged in the area of the rolling surface 302, which extends over the entire length of the roll.
  • the axial length of the rolling surface (or the feed passage width) can be in the range from 250 mm to 2000 mm, preferably in the range from 320 mm to 1600 mm, more preferably in the range from 480 mm to 1200 mm and most preferably in the range of 640 mm up to 820 mm.
  • the tube roller 300 comprises a shaft receptacle 308 which is set up to receive a bearing shaft in a rotationally fixed manner.
  • FIG. 3B shows a schematic representation of a further tube roller 350 according to the invention.
  • the tube roller 350 comprises a first end 355a and a second end 355b.
  • a radially circumferential rolling surface 352 of tube roller 350 is disposed between first end 355a and second end 355b and is configured to contact a workpiece.
  • the rolling surface 352 has an outside diameter d a . This can be in the range of 30 mm to 200 mm, preferably in the range of 44 mm to 150 mm, more preferably in the range of 60 mm to 120 mm and most preferably in the range of 80 mm to 100 mm.
  • the tubular roller In the area of the rolling surface 352, the tubular roller has a hollow inner area 354 which has an inner diameter di.
  • the rolling surface 352 and the hollow interior portion 354 are arranged substantially concentrically.
  • a first bearing surface 359a is configured to cooperate with a bearing to support the tube roller 350 rotatably about an axis of rotation 351 .
  • the first bearing surface 359a has a diameter di a that satisfies the following condition: di ⁇ dla 2 da
  • the tube roller 350 further includes a second bearing surface 359b for rotatably supporting the tube roller, which is opposite to the first bearing surface 359a in the axial direction.
  • the second bearing surface 359b has a diameter dib that satisfies the following condition: di ⁇ dib 2 d a .
  • the first bearing surface 359a and the second bearing surface 359b are configured in the configuration shown such that dib ⁇ di a applies.
  • the diameter di a of the first bearing surface 359a and the diameter dib of the second bearing surface 359b are outside diameters, respectively.
  • the first bearing surface 359a is arranged between the first end 355a of the tube roller and the rolling surface 352 and the second bearing surface 359b between the second end 355b of the tube roller and the rolling surface 352 .
  • the tube roller 350 is thus suitable for being pushed in the axial direction in a roller feed (see FIG. 4B).
  • the tube roller 350 includes a centering surface 360 which is set up to receive a rotor 72 of an electric motor 70 in a rotationally fixed manner (see FIG. 4A).
  • the centering surface has 360 an outside diameter dz that satisfies the following conditions: di ⁇ dz ⁇ d a and di ⁇ d z ⁇ dl a .
  • the tube roller 350 is thus suitable for being pushed in the axial direction in a roller feed (see FIG. 4B).
  • the large diameter d z also minimizes the risk of roll breakage, eg due to overload, compared to conventional rolls.
  • a clamping element 60 is arranged between the centering surface 360 and the rotor 72 of the electric motor 70 (see FIG. 4A).
  • the clamping element 60 is, for example, a centering clamping element, such as a cone clamping element, so that the rotor 72 is centered relative to the tube roller 350 when the rotor 72 is held for rotation.
  • the Tube roller 350 also includes a centering surface 360 which is designed to interact with a cone clamping element 60 (see FIG. 4A).
  • the centering surface 360 is formed at the first end 355a of the tube roller 350 .
  • the tube roller 350 also includes a gear element receptacle 320 which makes it possible to connect a gear element 22 (for example a toothed wheel) to the tube roller 350 in a torque-proof manner.
  • the gear element receptacle is preferably arranged at the second end 355b of the tube roller.
  • An intermediate surface 370 can be arranged between the centering surface 360 and the first bearing surface 359a, which has a diameter dzw, the diameter fulfilling the condition dz ⁇ dzw ⁇ dia a .
  • Intermediate surface 370 facilitates the sliding of a bearing onto bearing surface 359a.
  • FIG. 4A shows a schematic representation of a roller feed 4 according to the invention and FIG. 4B shows the roller feed 4 during assembly or disassembly.
  • the roll feed 4 shown comprises a first roll 300 which corresponds to the tube roll shown in Figure 3A.
  • the roll feed 4 comprises a second roll 350 which corresponds to the tube roll shown in FIG. 3B.
  • the first and the second roller 300, 350 are arranged in such a way that they are set up to convey a workpiece (not shown) through the roller feed 4.
  • An electric motor 70 of the roller feed 4 is set up to drive the second roller 350 .
  • the roller feed 4 also includes a gear arrangement 20.
  • a first gear element 21 is assigned to the first roller 300 and a second gear element 22 to the second roller 350.
  • a rotational movement of the second roller 350 is transmitted via the second gear element 22 to the first gear element 21 and then to the first roller 300 .
  • the first and the second gear element are designed here as spur gears.
  • a roller clutch 90 for example a Schmidt clutch, is arranged between the first transmission element 21 and the first roller 300 , which enables the first roller 300 to be adjusted in the radial direction Z relative to the second roller 350 .
  • the first roller 300 remains coupled to the first transmission element via the roller clutch.
  • the roller feed 4 shown also includes an actuator 95 which is set up to actively radially adjust the first roller 300 relative to the second roller 350 .
  • the roller feed 4 further comprises a base body 30 which accommodates the first roller 300 and the second roller 350 .
  • the base body 30 is designed in such a way that the rollers 300, 350 can be removed from the base body 30 in the axial direction, as shown in FIG. 4B.
  • the first roller 300 can be removed from the base body to the right and the second roller 350 to the left.
  • the body has a first bearing surface 39a associated with a first bearing surface 359a of tube roller 350 .
  • the body has a second bearing surface 39b associated with a second bearing surface 359b of the tube roller 350 to rotatably support the tube roller 350 in the body 30 .
  • Roller bearings 250a, 250b are arranged between the bearing surfaces 39a, 39b and 359a, 359b.
  • the gear element 22 is connected to the roller 350 in a rotationally fixed manner at the second end 355b.
  • the tube roller 350 receives a rotor 72 of the electric motor 70 on the centering surface 360 in a rotationally fixed manner.
  • the tube roller can be centered via the centering surface 360, which is designed to interact with a clamping element 60. This arrangement makes it possible to reduce the number of bearings required to a minimum.
  • the tube roller is mounted at only two points. Additional bearings for an input or output shaft can be omitted.
  • the tube roller 300 has a first bearing surface 309a which cooperates with a bearing 200a to rotatably support the tube roller 300 about an axis of rotation.
  • the tube roller 300 comprises a shaft receptacle 308 which receives a bearing shaft 80 in a rotationally fixed manner.
  • the bearing shaft 80 is supported on the bearing 200b and is connected to the roller clutch 90 .
  • the roller feed 4 also includes a rotary encoder 40 which is used to control the electric motor 70 .
  • the encoder may be at least partially received within the hollow interior 354 of the tube roller 350 .
  • Fig. 5 shows a schematic representation of a further roller feed 5 according to the invention.
  • the rotary encoder 40 is outside of the tubular roller 350 arranged.
  • the rest of the structure of the roller feed 5 corresponds to the roller feed from FIGS. 4A and 4B.
  • a workpiece 10 is conveyed between the rollers 300 , 350 .
  • FIG. 6 shows a schematic representation of a further roller feed 6 according to the invention.
  • both rollers 300′, 350′ are designed similarly to the tubular roller 300 shown in FIG. 3A.
  • An electric motor (not shown) drives the lower roller 350' via a drive shaft which is also a bearing shaft 85'.
  • the tube rollers 300', 350' each have a first bearing surface on 309a, 359a which cooperates with a bearing 200a, 250a in order to support the tube roller 300', 350' rotatably about an axis of rotation.
  • the tube roller 300' comprises a shaft receptacle 308, which receives a bearing shaft 80' in a rotationally fixed manner.
  • the bearing shaft 80 is mounted on the bearing 200b and is connected to the transmission element 21 via the roller clutch 90 .
  • the tube roller 350' comprises a shaft receptacle 358 which receives a bearing shaft 85' in a rotationally fixed manner.
  • the bearing shaft 85' is mounted on the bearing 250b and is connected to an electric motor for driving the roller 350'.
  • a gear element 22 is held in a rotationally fixed manner on the bearing shaft 85' and engages with the gear element 21 in order to also drive the roller 300'.
  • the bearings 200a, 250a' are each accommodated on bearing surfaces of the base body 30 of the roll feeder 6.
  • the base body 30 is designed in several pieces and includes a housing.
  • the base body 30 of the roller feed 6 is designed such that the tube rollers 300", 350' can be removed from the base body 30 in the axial direction (to the left in the illustration shown).
  • the base body has at least one installation opening.
  • the base body 30 has two installation openings.
  • the roller 300' can be inserted or removed axially through a first installation opening.
  • the roller 350' can be inserted or removed axially through a second installation opening.
  • the installation openings are each closed with a cap, in particular a centered cap 34 , 35 , the centered cap encompassing a bearing surface of the base body 30 .
  • 7 shows a schematic sequence of a method 1000 for producing a tube roller 300; 350. The procedure consists of the following steps, which can be performed in any order:
  • Manufacturing 1300 a rolling surface between the first and the second end with an outer diameter d a , wherein the roll blank in the region of the manufactured rolling surface has a hollow inner region which has an inner diameter di, and wherein the rolling surface and the hollow inner region are arranged essentially concentrically, and
  • Production 1400 of a first bearing surface which is set up to interact with a bearing in order to support the tube roller (300; 350) so as to be rotatable about an axis of rotation (301; 351), the first bearing surface (309a; 359a) having a diameter di a , which satisfies the following condition: di ⁇ di a ⁇ d a .
  • a tube roller (300, 350, 300', 350'), in particular for a roller feed (2, 4, 5, 6), comprises the following: a first end (305a; 355a) and a second end (305b; 355b); a radially circumferential rolling surface (302; 352), the rolling surface being disposed between the first end (305a; 355a) and the second end (305b; 355b) and being adapted to come into contact with a workpiece (10), the Rolling surface (302; 352) has an outer diameter d a , and the tube roll (300, 350, 300', 350') has a hollow inner region (304; 354) in the region of the rolling surface, which has an inner diameter di, and wherein the rolling surface (302; 352) and the hollow interior (304; 354) are arranged substantially concentrically, and a first bearing surface (309a; 359a), which is set up to interact with a bearing in order to support the tube roller (300, 350, 300', 350
  • a 2nd embodiment relates to the 1st embodiment, wherein the tube roller (300, 350, 300', 350') further comprises a second bearing surface (359b) for rotatably supporting the tube roller, which is axial to the first bearing surface (309a; 359a).
  • the second bearing surface (359b) has a diameter dib that satisfies the following condition: di ⁇ dib 2 d a , and wherein the first bearing surface (309a; 359a) and the second bearing surface (359b) are optionally configured so , that dib ⁇ di a holds.
  • a 3rd embodiment relates to any of the preceding embodiments, wherein the diameter di a of the first bearing surface (309a) and/or the diameter dib of the second bearing surface is an inner diameter, and optionally wherein the first bearing surface (309a) and/or the second bearing surface im Area of the rolling surface (302) is arranged.
  • a 4th embodiment relates to any of the preceding embodiments, wherein the diameter di a of the first bearing surface (359a) and/or the diameter dib of the second bearing surface (359b) is an outer diameter, and optionally wherein the first bearing surface (359a) is between the first end (355a) of the tube roller and the rolling surface (352) and/or the second bearing surface (359b) is arranged between the second end (355b) of the tube roller and the rolling surface (352).
  • a 5th embodiment relates to any of the preceding embodiments, wherein the tube roller (300) comprises a shaft mount (308) at the second end (305b), which is set up to receive a bearing shaft (80) in a rotationally fixed manner.
  • a sixth embodiment relates to the previous embodiment, with the shaft mount (308) being arranged in the area of the rolling surface (302).
  • the entire structure can be provided in a more compact and space-saving manner.
  • a shaft mount for example an internal shaft mount
  • a partial area of the hollow inner area is already implemented in a partial area of the hollow inner area.
  • the axial length of the tube roll could be meaningfully reduced.
  • a 7th embodiment relates to any of the preceding embodiments, wherein the tube roller (350) comprises a centering surface (360) which is designed to receive a rotor (72) of an electric motor (70) in a rotationally fixed manner, the centering surface (360) having an inner diameter or has an outer diameter, and wherein the diameter of the centering surface d z satisfies the following condition: di ⁇ d z ⁇ d a and optionally also satisfies the following condition: di ⁇ d z ⁇ dl a
  • An 8th embodiment relates to the previous embodiment, with a clamping element (60) being arranged between the centering surface (360) and the rotor (72) of the electric motor (70) and with the centering surface (360) optionally being formed on the first end (355a). .
  • a ninth embodiment relates to any of the preceding embodiments, wherein the hollow interior (354) is adapted to at least partially accommodate a rotary encoder (40).
  • a 10th embodiment relates to any of the preceding embodiments, wherein the hollow inner area (304; 354) is designed as a continuous hollow inner area which: in the axial direction an area of at least 70%, preferably at least 80%, more preferably at least 90%, am most preferably comprises at least 100% of the axial length of the rolling surface (302; 352); and/or in the radial direction an area of at least 60%, preferably at least 70%, more preferably at least 80%, even more preferably at least 90%, most preferably at least 95% of the outer diameter d a , over at least 70%, preferably at least 80%, more preferably at least 90%, most preferably at least 100% of the axial length of the rolling surface (302; 352).
  • the construction and the complexity of the tube roller can be meaningfully reduced.
  • the range information can also include other values.
  • the arrangement of the io. Embodiment no plurality of individual, separate cavities, which are located inside the rolling surface, are provided.
  • a contiguous area is sufficient, which can be a single area, for example.
  • the hollow inner area preferably extends over a large area, which preferably starts at a radius of 0 mm with respect to the axis of rotation and/or the axis of symmetry of the rolling surface in order to save material in a meaningful way.
  • a required strength of the tube roller can still be ensured.
  • the extension over the radial area should be present at least over a certain axial length of the tube roll, preferably the extension should be over a wide area of the axial length of the tube roll.
  • Embodiment within the tube roller no inner elongate member, eg an inner axis, which would prevent the contiguous hollow inner area, which is already at a radius of o mm.
  • the 6o% of the outer diameter start at the radius o and split up substantially symmetrically.
  • An 11th embodiment relates to any of the preceding embodiments, wherein the radially circumferential rolling surface (302; 352) is designed integrally with the tube roller (300, 350, 300', 350'); the tubular roller (300, 350, 300', 350') essentially has one layer, preferably only a single layer, with at least one further layer being arranged in the region of the rolling surface; and/or the tube roller (300, 350, 300", 350") consists essentially of metal, preferably consists of at least 80%, more preferably at least 90%, even more preferably 95%, most preferably 99% metal. With the arrangement of the 11th embodiment, simplified construction can be secured.
  • An integral design can mean, for example, that the tube roller is designed in one piece, so that the tube roller could be provided starting from one component during manufacture. This simplifies manufacture. A preferably single layer of the tube roller also entails simplified production. In some cases, the tube roll could also have special processing in the area of the rolling surface, for example the rolling surface could have a finer surface finish than other areas of the tube roll. This offers the advantage that only the relevant areas of the tube roll would have to be machined in a targeted and economical manner in order to provide a tube roll according to the invention.
  • the processing of the surface could possibly also include the application of a material.
  • the tube roller could comprise a coating of a material, e.g. plastic or hard rubber, which is preferably arranged in the area of the roller surface.
  • the coating does not take place over the entire axial length of the tube roll. Coatings are also conceivable, e.g. the Topochrome process or chemical processes to increase the roughness, e.g. the Hardalloy process.
  • the tubular roller can be extended by a layer of material that is arranged in the area of the rolling surface. This means that different tube rollers with different coatings can be flexibly produced.
  • the coating of an existing tubular roller can also be flexibly modified.
  • the outer diameter of the tube roller remains essentially unaffected.
  • the tube roller can be turned to a lower radius in the area of the roller surface during manufacture in order to apply a coating thereto.
  • other materials e.g. plastic materials, are used instead of metal.
  • a 12th embodiment relates to any of the preceding embodiments, wherein the tube roller (300, 350, 300', 350”) is set up to be installed and/or operated without an axially continuous and internal component, in particular an axle, shaft or spindle.
  • the tube roller when the tube roller is installed and/or in operation, there is no component inside the tube roller, in particular a component which extends, for example, over at least 30%, 40%, 50% or more of the axial length of the rolling surface .
  • accessibility from the outside is considerably simplified.
  • the visibility of other components is increased.
  • possible inner bearings that are in contact with the tube roller can be seen better.
  • the months can also be simplified and improved.
  • a system comprises: a tube roller (300, 350, 300', 350'') according to any one of the preceding claims; a first shot; a second receptacle, wherein the tube roller (300, 350, 300', 350") interacts with the first receptacle and with the second receptacle and the receptacles are designed to rotate the tube roller (300, 350, 300", 350") or rotatably received, wherein the receptacles further: are not in communication with one another via at least one component which is located in the hollow interior of the tube roller and/or is non-rotatable; have no connection directly to one another or via at least one non-rotatable component which is located in the hollow interior of the tube roller; and/or have no direct and/or indirect contact with one another in the hollow inner region (304; 354) of the tube roller (300, 350, 300', 350”) or within the inner diameter di, with indirect contact being contact via one or more components , which are essentially
  • the arrangement of the 13th embodiment ensures that the first and second recordings do not have another component, or several, internal, if necessary. non-rotatable other components are in contact.
  • the advantage of the 12th embodiment can be achieved with it.
  • the receptacles would be in communication, for example, if they are essentially in contact via one or more non-rotatable components, for example the other components and the receptacles and the components could essentially touch.
  • this can be advantageous be prevented, so that the construction is considerably simplified. For example, no internal axle would be required to accommodate the tube roller over the turrets.
  • a 14th embodiment relates to the previous embodiment, wherein the first receptacle comprises an outer or an inner bearing and at least one further first component, against which the bearing supports the tube roller (300, 350, 300", 350'), preferably rotatably.
  • the receptacles include a further component, e.g. a non-rotatable component.
  • the receptacle can comprise a bearing and at least part of an axle against which the bearing would be mounted on the inner side facing away from the tubular roller if the bearing were an inner bearing.
  • the additional component does not extend over an entire axial area of the rolling surface, so the receptacle can be designed to be economical, space-saving and compact.
  • a 15th embodiment relates to any one of embodiments 13 to 14, wherein the second seat comprises an outer or an inner bearing and at least one further second component against which the bearing supports the tube roller (300, 350, 300", 350'), preferably rotatably mounted; or the second receptacle comprises a bearing shaft, which is non-rotatably received by the tube roller (300, 350, 300', 350').
  • both receptacles may be bearings, with both bearings being inboard or outboard, or combinations thereof.
  • the second recording can also be a bearing shaft.
  • a roll feed (2, 4, 5, 6) comprises: a first roll (300) and a second roll (350), the first and second rolls (300, 350) being arranged such that they are set up to convey a workpiece (10) with the roller feed (2, 4, 5, 6), the roller feed being configured in such a way that it can be coupled to an electric motor (70) in order to drive at least the second roller (350), and wherein the first roll (300) and/or the second roll (350) is a tube roll according to any one of claims 1 to 12.
  • a 17th embodiment relates to embodiment 16, wherein the roll feed comprises a base body (30) which receives the first roll (300) and the second roll (350) and wherein the base body (30) has a first bearing surface (39a) which associated with a first bearing surface (359a) of the tube roller and optionally having a second bearing surface (39b) associated with a second bearing surface (359b) of the tube roller (350) for rotating the tube roller (350) in the body (30). to store.
  • An 18th embodiment relates to one of the embodiments 16 to 17, wherein the roller feed comprises a gear arrangement (20), and wherein a first gear element (21) is assigned to the first roller (300) and a second gear element (22) to the second roller (350). and wherein a rotational movement of the second roller (350) is transmitted via the second gear element (22) to the first gear element (21) and then to the first roller (300).
  • a 19th embodiment relates to one of the embodiments 16 to 18, wherein the roller feed comprises a roller clutch (90) which enables the first roller (300) to be adjusted in the radial direction relative to the second roller (350), and wherein the roller feed optionally includes a Actuator (95) comprises to actively radially adjust the first roller (300) relative to the second roller (350).
  • the roller feed comprises a roller clutch (90) which enables the first roller (300) to be adjusted in the radial direction relative to the second roller (350)
  • the roller feed optionally includes a Actuator (95) comprises to actively radially adjust the first roller (300) relative to the second roller (350).
  • a 20th embodiment relates to one of the embodiments 16 to 19, wherein the roller feed comprises a rotary encoder (40) which is used to control the
  • Electric motor (70) is used, and wherein the encoder (40) is optionally at least partially accommodated in the hollow interior (354) of the tube roller (350).
  • a 21st embodiment relates to one of the embodiments 16 to 20, wherein the base body (30) is designed such that the at least one tubular roller
  • (350) can be removed from the base body (30) in the axial direction.
  • a 22nd embodiment relates to one of embodiments 16 to 21, wherein the first roller (300) is a tubular roller with an inner bearing and a bearing shaft and/or the second roller (350) is a tubular roller with at least one outer bearing.
  • a 23rd embodiment relates to one of embodiments 16 to 21, wherein the first roller (300) is a tubular roller with an inner bearing and a bearing shaft and/or the second roller (350) is a tubular roller with an inner bearing and a bearing shaft.
  • a method (1000) for producing a tube roller (300; 350) according to one of embodiments 1 to 12 comprises the following steps:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

La présente invention concerne un rouleau tubulaire, une alimentation à rouleaux et un procédé de production d'un rouleau tubulaire, le rouleau tubulaire (300 ; 350) comprenant une première extrémité (305a ; 355a) et une seconde extrémité (305b ; 355b) et une surface de roulement formant un cerclage radial (302 ; 352). La surface de roulement est disposée entre la première et la seconde extrémité et est conçue pour venir en contact avec une pièce (10). La surface de roulement (302 ; 352) a un diamètre extérieur da. Dans la zone de la surface de roulement, le rouleau tubulaire présente une zone interne creuse (304 ; 354) de diamètre intérieur d1, la surface de roulement (302 ; 352) et la zone interne creuse (304 ; 354) étant disposées de manière sensiblement concentrique. Le rouleau tubulaire comprend également une première surface de palier (309a ; 359a) qui est conçue pour coopérer avec un palier afin de monter le rouleau tubulaire (300 ; 350) de manière à ce qu'il puisse tourner autour d'un axe de rotation (301 ; 351), la première surface de palier (309a ; 359a) ayant un diamètre dla qui satisfait à la condition suivante : di ≤ dla ≤ da.
PCT/EP2021/076509 2020-09-25 2021-09-27 Rouleau tubulaire, alimentation à rouleaux et procédé de fabrication d'un rouleau tubulaire WO2022064040A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20198455.6 2020-09-25
EP20198455.6A EP3974079A1 (fr) 2020-09-25 2020-09-25 Rouleau tubulaire, alimentation en rouleaux et procede de fabrication d'un rouleau tubulaire

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WO2022064040A1 true WO2022064040A1 (fr) 2022-03-31

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024048631A (ja) * 2022-09-28 2024-04-09 アイダエンジニアリング株式会社 板状部材送り装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349981A (en) * 1964-06-24 1967-10-31 Humphris & Sons Ltd Strip feed device
DE2215342A1 (de) * 1972-03-29 1973-10-18 Reuter Maschinen Antistatische transportbandwalzen und verfahren zu ihrer herstellung
DE2427768A1 (de) * 1974-06-08 1975-12-18 Weingarten Ag Maschf Einrichtung zum schrittweisen vorschieben von band- oder streifenmaterial, an pressen, stanzen oder dergleichen arbeitsmaschinen
US4158429A (en) * 1977-03-28 1979-06-19 Honshyuseishi Kabushiki Kaishya Apparatus for feeding elongate sheet materials
EP1123887A1 (fr) * 1999-08-20 2001-08-16 Sumitomo Osaka Cement Co., Ltd. Procede de production de cylindres d'alimentation en papier
WO2003057607A1 (fr) * 2002-01-11 2003-07-17 Windmöller & Hölscher Kg Rouleau de transport ou rouleau deflecteur presentant des trous d'equilibrage dans le corps de rouleau cylindrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349981A (en) * 1964-06-24 1967-10-31 Humphris & Sons Ltd Strip feed device
DE2215342A1 (de) * 1972-03-29 1973-10-18 Reuter Maschinen Antistatische transportbandwalzen und verfahren zu ihrer herstellung
DE2427768A1 (de) * 1974-06-08 1975-12-18 Weingarten Ag Maschf Einrichtung zum schrittweisen vorschieben von band- oder streifenmaterial, an pressen, stanzen oder dergleichen arbeitsmaschinen
US4158429A (en) * 1977-03-28 1979-06-19 Honshyuseishi Kabushiki Kaishya Apparatus for feeding elongate sheet materials
EP1123887A1 (fr) * 1999-08-20 2001-08-16 Sumitomo Osaka Cement Co., Ltd. Procede de production de cylindres d'alimentation en papier
WO2003057607A1 (fr) * 2002-01-11 2003-07-17 Windmöller & Hölscher Kg Rouleau de transport ou rouleau deflecteur presentant des trous d'equilibrage dans le corps de rouleau cylindrique

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