WO2021069383A1 - Dispositif à rouleaux comprenant un cylindre creux - Google Patents

Dispositif à rouleaux comprenant un cylindre creux Download PDF

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Publication number
WO2021069383A1
WO2021069383A1 PCT/EP2020/077871 EP2020077871W WO2021069383A1 WO 2021069383 A1 WO2021069383 A1 WO 2021069383A1 EP 2020077871 W EP2020077871 W EP 2020077871W WO 2021069383 A1 WO2021069383 A1 WO 2021069383A1
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WO
WIPO (PCT)
Prior art keywords
hollow cylinder
rolling device
support element
rolling
pressure belt
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.)
Ceased
Application number
PCT/EP2020/077871
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German (de)
English (en)
Inventor
Alexander Wangler
Marc Oellrich
Lyon Jaspa TIETZ
Klaus Nagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KraussMaffei Extrusion GmbH
Original Assignee
KraussMaffei Extrusion GmbH
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 KraussMaffei Extrusion GmbH filed Critical KraussMaffei Extrusion GmbH
Publication of WO2021069383A1 publication Critical patent/WO2021069383A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/48—Endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C2033/023—Thermal insulation of moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3205—Particular pressure exerting means for making definite articles
    • B29C2043/3216—Particular pressure exerting means for making definite articles deformable nets, meshes, lattices or fabrics, e.g. tubular ones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3676—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions
    • B29C2043/3678—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions on cylindrical supports with moulds or mould cavities provided on the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/48—Endless belts
    • B29C2043/486—Endless belts cooperating with rollers or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
    • B29C33/065—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating in rolls, calenders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Definitions

  • the present invention relates to a rolling device in which the material to be rolled is guided over a hollow cylinder.
  • rolling devices are used in which a material is guided on a roller and at the same time pressed onto the roller by a pressure belt placed around the roller.
  • the pressure acting on the material causes it to be rolled out.
  • the pressure can promote and / or trigger chemical reactions in the material, e.g. when a rubber compound is vulcanized to form rubber or the like.
  • the roller In addition to the generation of high pressure by the pressure belt, it is necessary for many manufacturing processes to bring the material to be rolled to a certain temperature. For example, rubber has to be heated in order to initiate vulcanization into rubber.
  • the roller In order to control the temperature of the material to be rolled out, the roller is usually brought to a certain temperature. This happens due to the mass by means of a temperature control medium that functions as a heat transporter, such as thermal oil, water, steam or the like, with the heat can be supplied or discharged.
  • a temperature control medium that functions as a heat transporter, such as thermal oil, water, steam or the like, with the heat can be supplied or discharged.
  • the inside of the rollers used is provided with a line system which allows the temperature control medium to be guided through the roller and thereby to heat or cool it.
  • the large mass of the roller means that a large amount of heat is required to heat the roller.
  • the object of the invention is therefore to provide a rolling device whose rollers can be produced in a simple and inexpensive manner, which simplify maintenance and which, if necessary, can be brought to a predetermined temperature in a simple and cost-saving manner. This problem is solved by the subject matter of the claims.
  • a rolling device for rolling out a material web can have a rotatable, rolling hollow cylinder, at least one support element for the hollow cylinder and a pressure belt which is stretched around part of the circumference of the hollow cylinder and can run over the hollow cylinder in such a way that material to be rolled is between the pressure belt and hollow cylinder is guided.
  • the hollow cylinder is held by the tensioned pressure band and the at least one support element in a working position in which the support element supports the hollow cylinder on its inner jacket surface or its outer jacket surface.
  • the pressure belt is suitable for causing a rotation of the hollow cylinder in the working position and thus a conveyance of the material in the direction of rotation by its running off.
  • a hollow cylinder that is held in a rolling manner should be used. This offers the advantage of a considerable reduction in mass without having to change the area required for the rolling process, namely the outer surface of the (hollow) cylinder. In this way, material can be saved to a considerable extent, which leads to a reduction in costs.
  • the roller used Since the roller used is hollow on the inside, it cannot be suspended from a central axis of the hollow cylinder. Rather, the hollow cylinder is held in its working position by the pressure belt and at least one support element.
  • the pressure belt can be a steel belt (or a steel web) that is deflected over several rollers or bearings and pressed onto the hollow cylinder and can have almost the entire width of the hollow cylinder. Tension is given by slowly letting the pressure band run off onto the pressure band. Since the pressure band runs around the hollow cylinder, the pressure band is pressed radially onto the hollow cylinder by this pull. At the same time, the printing belt moves at a defined angle to the hollow cylinder over the latter or over the material located on the hollow cylinder. Due to the strong pressure in the radial direction, the hollow cylinder and the material pressed onto it by the printing belt rotate at the same speed as the printing belt moves past due to the high friction. In this known manner, the material is simultaneously pressurized and conveyed through the rolling device.
  • one or more support elements are necessary which support the hollow cylinder against this pressure.
  • These support elements can support the hollow cylinder on its outer surface. They are then arranged on the side of the hollow cylinder opposite the contact side of the printing tape. However, the support elements can also be inside the hollow cylinder be arranged to support the hollow cylinder on its inner lateral surface. Then the support elements are arranged in the direction of the printing tape.
  • An external support offers the advantage that the roller formed by the hollow cylinder can be installed or replaced in a simple manner.
  • An internal support saves space, which can be advantageous in particular in the case of compact machines.
  • the interaction of the printing belt and the support element makes it possible to replace the heavy and expensive full cylinder rollers that are usually used with hollow cylinders with a significantly lower weight.
  • the structure of conventional rolling devices can remain unchanged except for the differently designed suspension of the roller and the replacement of the roller.
  • the guidance of the printing tape and the material to be rolled is unchanged and known to a person skilled in the art, which is why a description of these components is unnecessary at this point.
  • the roller designed as a hollow cylinder can be used in any device in which a pressure belt applies pressure to a roller. What is essential here is the weight reduction through the use of a hollow cylinder and the holding of the hollow cylinder in its working position through the interaction of the pressure belt and at least one support element.
  • the other components of a rolling device in which the hollow cylinder is used are of secondary importance.
  • the wall thickness of the hollow cylinder can be between 1% and 20% of the outer diameter of the hollow cylinder, preferably 1%, 2%, 5%, 10%, 15% or 20%.
  • the wall thickness of the hollow cylinder can be selected depending on the material used for the cylinder, the material to be processed and the pressure applied for this in such a way that there is no deformation of the hollow cylinder which would impair the work result.
  • steel cylinders with a wall thickness in the range of 5 cm, for example 3 cm, 4 cm, 5 cm or 6 cm can be used for the vulcanization of rubber. Despite this considerable wall thickness, the The use of such hollow cylinders still results in a large reduction in material and thus in weight and cost savings.
  • the outer diameter of the hollow cylinder can be between 200 mm and 5,000 mm, preferably 200 mm, 400 mm, 600 mm, 1,000 mm, 1,500 mm, 2,000 mm, 3,000 mm, 4,000 mm or 5,000 mm.
  • the roller designed as a hollow cylinder can thus be used for all common rolling devices. In principle, any size of roller can be used for the hollow cylinder.
  • the support elements can support the hollow cylinder in its working position along several axes. Since the support of the hollow cylinder no longer runs centrally over its central axis, but rather takes place on the outer jacket or on the inner jacket, the support elements can also be arranged along several axes and thus support the hollow cylinder at several support points. This further reduces the load-bearing capacity required for an individual support element. Each support element can therefore be made simpler, e.g. less stable against weight loads. This further simplifies the construction and costs can be reduced.
  • the support elements can be rotatably mounted and the hollow cylinder can roll over the support elements.
  • the support elements are then designed as rollers, shafts, shaft journals, freewheeling wheels, axles, rollers or the like, on which the hollow cylinder rests and rolls.
  • the rotatable support elements can here assume any shape. They can, for example, be rubber-coated wheels or steel rollers that are present in the rolling device. It is particularly advantageous if components of conventional rolling devices, such as other rolls, serve as support elements for the hollow cylinder, since this makes it easier to convert from a full cylinder roll to a hollow cylinder roll.
  • the hollow cylinder can be supported on deflection and / or guide rollers of the rolling device, ie on rollers that are already used in the rolling device for other purposes.
  • the support elements can also be sliding elements on which the hollow cylinder slides. Then the support elements do not rotate themselves, but rather provide the hollow cylinder with sliding surfaces or sliding profiles on which it can slide in a controlled manner during its rotation.
  • the sliding surfaces / profiles can be provided with a conventional lubricant, but lubricant-free sliding is also conceivable.
  • the support elements are preferably shaped in such a way that the friction between the support elements and the hollow cylinder is minimal. In this embodiment of the support elements, the mounting of the hollow cylinder is very simple. In the working position, the hollow cylinder is pressed onto the support elements by the pressure belt. As the printing tape runs off, the hollow cylinder rotates and slides over the support elements.
  • the support elements can be shorter in the axial direction of the hollow cylinder than the hollow cylinder.
  • the support elements then do not extend completely through the hollow cylinder or do not support it completely on its outer jacket.
  • the support elements only support a predetermined outer area of the hollow cylinder, while the hollow cylinder floats freely in its center.
  • support the hollow cylinder in individual areas along different axes, for example edge areas of the hollow cylinder on both sides along one axis and the central part along at least one other axis. Individuals of the various support axes can be located both outside and inside the hollow cylinder.
  • the length and positioning of the support elements can thus be designed to be as flexible as possible in order to ensure that the hollow cylinder is supported as stable and structurally as simple as possible. In principle, there are no limits to the dimensioning and positioning, as long as they can be accommodated spatially in the specific rolling device.
  • the support elements can be arranged in a force flow-oriented manner, i.e. they absorb the forces exerted by the pressure band on the hollow cylinder in such a way that the result is as little deformation of the hollow cylinder as possible.
  • the support elements can be arranged symmetrically to an axis or plane defined by the force exerted by the pressure band.
  • the rolling device can furthermore have a temperature control device for controlling the temperature of the hollow cylinder, preferably in an area in which the material to be rolled can be guided between the pressure belt and the hollow cylinder and / or in a variable area.
  • a temperature control device for controlling the temperature of the hollow cylinder, preferably in an area in which the material to be rolled can be guided between the pressure belt and the hollow cylinder and / or in a variable area.
  • the material can be brought to a certain temperature via the material of the hollow cylinder (eg steel), which is intended for the work step carried out.
  • the material can be heated in order to cause or enable certain chemical reactions, such as the vulcanization of rubber. But it is also possible to cool the material or to keep it at a certain temperature, for example to prevent such reactions. Due to the lower mass of the hollow cylinder compared to a solid cylinder, a lower amount of energy is required to heat the roll than is the case with conventional heatable rolling devices.
  • the temperature-controlled area can be freely adjustable and, for example, also have several zones. However, a spatially fixed area can also be tempered, such as the area in which the material runs between the printing belt and the hollow cylinder, or one or more sub-areas thereof.
  • the temperature control device can be arranged in a stationary manner, preferably in the interior of the hollow cylinder. The temperature control device does not rotate with the hollow cylinder, but is fixed. In particular, the temperature control device is not connected to the hollow cylinder or part of it. Rather, the desired temperature equalization takes place via the ambient air, by means of (heat) radiation or inductively. This enables an effective and simple heat exchange that works completely independently of the structure of the roller used. Technically complex and cost-intensive lines for a heat exchange medium in the roller can thus be dispensed with.
  • the temperature control device can be arranged in a space-saving manner within the hollow cylinder in order to heat or cool the hollow cylinder without direct influence on the material to be rolled out and the pressure band. This makes the temperature control particularly effective.
  • the temperature control device can, however, also be arranged outside the hollow cylinder, which simplifies the structure of the rolling device. Cooling units are particularly suitable for cooling the roller, printing belt and material, which act on these elements, for example, with an air flow.
  • the temperature control device is suitable for heating the hollow cylinder, this is preferably done by means of induction heating, infrared heating or radiant heaters.
  • the hollow cylinder in particular from its interior, can be heated in a certain area in a simple manner.
  • the use of a heating medium is no longer necessary, and there is therefore no need for complex wiring for the heating medium. This leads, on the one hand, to a cost reduction in the manufacture of the roller and, on the other hand, to energy savings.
  • the hollow cylinder can have an insulating layer on its inner jacket for thermal insulation. This causes the heat of the hollow cylinder preferably delivered in the direction of the material to be rolled out. This makes the heating more effective.
  • the rolling device can furthermore have at least one holding device which is suitable for receiving the hollow cylinder when the pressure belt is relaxed.
  • the hollow cylinder can therefore be accommodated by a different mounting than the support elements. Since no pressure is exerted on the hollow cylinder when the pressure band is relaxed, the holding device only has to bear the weight of the hollow cylinder. It can therefore be designed to be less stable than the support elements. It is also possible to move the holding device out of the area of the hollow cylinder during a working operation and to use it only when the pressure band is released.
  • the holding device can carry the hollow cylinder either in a suspended manner or as a frame supporting it from below. Alternatively, the hollow cylinder can also be supported by at least one support element when the pressure band is relaxed. This then simplifies the structure of the rolling device.
  • the rolling device described above thus works with rolls that can be manufactured inexpensively and easily, that simplify maintenance and that can be brought to a predetermined temperature in a simplified manner and with a comparatively low energy requirement if required.
  • Fig. 1 is a schematic cross-sectional representation of a
  • Fig. 2 is a schematic cross-sectional representation of a
  • Rolling device with a temperature control device 3 shows a schematic cross-sectional illustration of a
  • FIGS. 5A and 5B show a schematic plan view and a schematic cross-sectional illustration of a rolling device
  • FIG. 6 shows a schematic cross-sectional representation of a rolling device.
  • FIG. 1 schematically shows a cross section through the roller of a rolling device 100.
  • the roller is designed as a hollow cylinder 110 and is spanned by a pressure belt 130 in an area 116.
  • Hollow cylinder 110 and pressure belt 130 serve to guide material 200 or a material belt between them in order to roll it out.
  • the position of the hollow cylinder 110 and the pressure belt 130 in the overall assembly of the rolling device 100 corresponds to the usual structure known to a person skilled in the art.
  • the printing belt 130 can be stretched over one or more deflection rollers 160 over the hollow cylinder 110 which constitutes the roller and slowly guided in the direction of the arrow A under tension.
  • the printing belt 130 can be made of steel and have a width (perpendicular to the plane of the drawing in FIG. 1) which corresponds to that of the hollow cylinder 110.
  • the tensile force on the pressure band 130 can be in the range of a few mega-newtons, for example 1 MN, 3 MN, 5MN or in between.
  • a pressure of a few bar is generated on the material 200, for example 5 bar, 8 bar, 10 bar or in between.
  • a pressure between 6 bar and 8 bar can be generated.
  • the hollow cylinder 110 is used in the rolling device 100.
  • the hollow cylinder 110 can be made of steel in a known manner. It can have a wall thickness between 1% and 20%, preferably between 5% and 15% or in the range of 10% of the outer diameter of the hollow cylinder. In contrast to a full cylinder usually used as a roller, about 70% material and thus also weight can be saved.
  • the outer diameter of the hollow cylinder can be between 200 mm and 5,000 mm, preferably between 500 mm and 4,000 mm, or 1,000 mm and 3,000 mm. This ensures a sufficiently large working area 116. It goes without saying that the hollow cylinder 110 can be produced from any other sufficiently stable material. Steel is just one common example.
  • the rolling device Since a suspension along a central axis is not possible during operation, i.e. when the tension belt is in place, the rolling device has at least one support element 120 in order to hold the hollow cylinder 110 in its working position when pressure is applied by the pressure belt 130.
  • rotatably mounted support elements 120 which are rotatably mounted.
  • This can be any type of rotatable mounting, for example roller bearings, shafts, rollers, pins, axles, freewheeling wheels or the like.
  • rotatably mounted support elements 120 can be arranged on the outer jacket surface 114 of the hollow cylinder 110. They absorb the forces exerted by the printing belt 130 on the hollow cylinder 110 and allow the hollow cylinder 110 to rotate in accordance with the movement of the printing belt 130.
  • the speed of rotation of the hollow cylinder 110 is a few revolutions per minute, for example up to 5 rpm.
  • support elements 120 instead of supporting the hollow cylinder 110 on rotatable support elements 120, it is also possible to use support elements 120 on which the hollow cylinder 110 is slidably guided.
  • support elements 120 designed as sliding blocks rest on the side of the outer jacket surface 114 facing away from the pressure band 130. These are designed in such a way that the friction between the outer jacket surface 114 and support elements 120 is reduced as much as possible, e.g. due to sliding profiles.
  • the sliding of the hollow cylinder 110 on the support elements 120 can be facilitated by lubricants such as lubricating oil or the like. Alternatively, with correspondingly smooth and hard surfaces, lubricant-free sliding is also possible.
  • the support elements 120 can also be arranged in the interior of the hollow cylinder 110. This results in a particularly space-saving construction that does not differ from the outside of the construction of conventional rolling devices. In the case of the external support, however, the installation / removal of the hollow cylinder 110 is simplified. It goes without saying in all of the figures that the position and the number of the support elements are arbitrary as long as a secure support against the pressure of the printing tape 130 is guaranteed.
  • FIG. 3 shows an example of a suspension of the hollow cylinder 110 by means of two support elements 120 which form two different axes. This stabilizes the mounting of the hollow cylinder 110, since there is essentially no play for movements of the hollow cylinder 110 perpendicular to the axial direction. It goes without saying that more than two axes can also be used in any position inside and outside the hollow cylinder 110, as long as these ensure that the hollow cylinder 110 is securely supported in its working position.
  • FIG. 4 shows an example of a force flow-oriented mounting of the hollow cylinder 110 by means of a single support element 120.
  • the support element 120 lies directly opposite the pressure belt 130 and therefore directly absorbs the forces acting on the hollow cylinder 110. It goes without saying that more than one support element 120 can also support the hollow cylinder 110 on its inner lateral surface 112 in a force flow-oriented manner in the region 116 which is opposite the pressure band 130. As a result, the hollow cylinder can, if necessary, be further supported against the forces of the printing belt 130.
  • the rolling device 100 can furthermore have a temperature control device 140 for controlling the temperature of the hollow cylinder 110, i.e. in particular for heating and cooling the hollow cylinder 110.
  • a temperature control device 140 for controlling the temperature of the hollow cylinder 110, i.e. in particular for heating and cooling the hollow cylinder 110.
  • This can be advantageous, for example, in applications in which the material 200 has to be brought to a certain temperature. For example, when vulcanizing rubber to rubber, it is necessary to maintain a defined temperature as well as a defined pressure. For other production processes, however, it may also be necessary to cool the material 200 or to keep it at a certain temperature.
  • the temperature control device 140 acts on the area 116 in order to set the temperature of the material 200. As shown in FIG. 2, this can be achieved by temperature control devices 140 which are arranged in the interior of the hollow cylinder 110.
  • a heating coil, an infrared radiator or the like can be located in the interior of the hollow cylinder 110, which emits thermal radiation to the area 116 of the hollow cylinder 110 and thus heats it in this area 116.
  • the hollow cylinder 110 can also be heated inductively. Since heating of the hollow cylinder 110 is of interest essentially in the area in which the material 200 is in contact with the hollow cylinder 110, the thermal radiation or the induction field can be focused on this area. This makes the heating more efficient while using the same amount of energy. Instead of heating, however, cooling can also take place from the inside, for example by means of cooling units or a simple flow of cooling air.
  • the temperature control device 140 can, however, also act on other partial areas of the hollow cylinder 110 than the area 116.
  • partial areas can be temperature controlled which are smaller or larger than the area 116, which are arranged before or after the area 116 or which overlap with the area 116 .
  • the effective range of the temperature control device 140 can also be variable and, for example, can be changed over time.
  • the temperature control device 140 can alternatively or additionally act from the outside on the combination of hollow cylinder 110, material 200 and pressure belt 130. This simplifies the construction of the rolling device 100, but is less space-saving.
  • the external temperature control device 140 can also be designed as heating or cooling. Here, too, it is possible to focus on the area 116.
  • the temperature of the material 200 to be rolled can be set without the use of a line system within the wall of the hollow cylinder 110, i.e. the roll used in the rolling device 100.
  • the production of the roller is less expensive and technically simpler.
  • the inner jacket surface 112 of the hollow cylinder 110 can be formed with an insulating or insulating layer that reduces heat transport from the hollow cylinder 110 into its interior.
  • the temperature control device 140 is preferably not itself located in this interior space, with the exception of inductive processes.
  • the temperature control device 140 is preferably arranged statically, that is to say it is stationary compared to the rotating hollow cylinder 110 and acts in each case on the sections of the hollow cylinder 110 that are rotated in the effective area of the temperature control device 140 (in which Fig. 2 as a dashed cone, shown in Fig. 3 as wavy lines). If this is desired, the temperature control device 140 can, however, also be arranged to be rotatable in order to always act on the same area of the hollow cylinder 110. The temperature control device 140 can also act on the entire hollow cylinder 110, if this is advantageous.
  • 5A, 5B and 6 show exemplary configurations of the rolling device 100 which, in addition to the elements described above, have a holding device 150 for supporting the hollow cylinder 110 when the pressure belt 130 is relaxed.
  • FIG. 5A shows a plan view of the hollow cylinder 110 in its working position.
  • FIG. 5B shows a cross-sectional illustration of the hollow cylinder 110 along the line I-I.
  • a number of support elements 120 lie against the inner jacket surface 112 of the hollow cylinder 110 along an axis x.
  • the support elements 120 have a shorter axial length than the hollow cylinder 110 and thus only support an edge area and a central area of the hollow cylinder 110.
  • the support elements 120 can be, for example, freewheel wheels or shaft journals that are mounted on the axis x.
  • support elements 120 shaped in this way can also be lined up along an axis. In particular, only the edge regions of the hollow cylinder 110 can also be supported by support elements 120. It also goes without saying that all of the support elements 120 shown in FIGS. 1 to 6 do not extend over the entire length of the Hollow cylinder 110 must extend, but only over selected parts and in axial series with other support elements 120.
  • support elements 120 do not have to lie in the same position on different axes. Rather, a support that engages only in individual areas, i.e. only on a limited area of the hollow cylinder 110, by means of various rotatable or non-rotatable support elements 120 of different designs and different dimensions is conceivable. An example of this is shown in FIG. 6, in which external sliding elements along two axes are combined with an internal rotatable bearing along a further axis.
  • the rolling device of FIGS. 5A and 5B additionally has a continuous shaft or a continuous rod as a holding device 150.
  • a continuous shaft or a continuous rod as a holding device 150.
  • FIG. 5B this is in the working position of the hollow cylinder 110 in the interior of the hollow cylinder 110 without touching the hollow cylinder. If the pressure band now relaxes, the hollow cylinder 110 sinks down until it is supported by the holding device 150 against gravity. In this maintenance position, the hollow cylinder 110 hangs on the holding device 150.
  • a holding device 150 can also be located below the hollow cylinder 110 in order to support it on its outer jacket surface 114. With the printing tape 130 removed, the hollow cylinder 110 then rests on the holding device 150 and is carried by the latter.
  • the holding device 150 it is possible to have the holding device 150 only engage the edge regions of the hollow cylinder 110 and to remove the holding device 150 from the hollow cylinder 110 when the rolling device is in operation. In this way, the hollow cylinder 110 can be stored securely for maintenance of the rolling device 100 or for replacing components of the rolling device 100 without stressing the support elements 120.
  • the additional holding device 150 allows the support elements 120 to be positioned more flexibly and in particular in a force flow-oriented manner, since no consideration has to be given to the fact that the support elements 120 can also hold the hollow cylinder 110 in a maintenance position, ie without the application of force by the pressure band 130.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un dispositif à rouleaux (100) destiné à dérouler des bandes de matériau, comprenant un cylindre creux rotatif (110) qui est logé de telle sorte qu'il peut faire tourner au moins un élément de support (120) du cylindre creux et une bande presseuse (130) qui est étirée autour d'une partie de la circonférence du cylindre creux (110) et qui peut passer sur le cylindre creux (110) de telle sorte que le matériau (200) à dérouler est guidé entre la bande presseuse (130) et le cylindre creux (110). Le cylindre creux (110) est maintenu dans une position de travail par la bande presseuse (130) étirée et le ou les éléments de support (120), position dans laquelle l'élément de support (120) supporte le cylindre creux (110) sur sa surface d'enveloppe interne ou sa surface d'enveloppe externe (114). Pendant le fonctionnement, la bande presseuse (130) peut provoquer une rotation du cylindre creux (110) dans la position de travail et assurer ainsi également le transport du matériau (200) dans le sens de rotation.
PCT/EP2020/077871 2019-10-07 2020-10-05 Dispositif à rouleaux comprenant un cylindre creux Ceased WO2021069383A1 (fr)

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DE102019126895.8 2019-10-07
DE102019126895.8A DE102019126895A1 (de) 2019-10-07 2019-10-07 Walzvorrichtung mit Hohlzylinder

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WO2021069383A1 true WO2021069383A1 (fr) 2021-04-15

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952017A (en) * 1994-12-16 1999-09-14 Taisei Kako Co., Ltd. Pressure roll, and molding apparatus using the pressure roll
DE19943604A1 (de) * 1999-09-11 2001-03-22 Schroeder Heinrich Friedrich Verfahren zur kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, Bahnen und Platten aus Plasten und Einrichtung zur Ausübung des Verfahrens
DE102004044981A1 (de) * 2004-01-30 2005-08-18 Kark Ag Vorrichtung und Verfahren zum Formen eines Folienbandes
DE69828698T2 (de) * 1997-04-16 2006-01-12 Velcro Industries B.V. Kontinuierliches formen von befestigungsprodukten und dergleichen sowie auf diese weise hergestellte produkte
FR2893531A1 (fr) * 2005-11-24 2007-05-25 Airbus France Sas Procede de consolidation en continu pour l'obtention d'un materiau stratifie et dispositif pour sa mise en oeuvre
DE102007052592B3 (de) * 2007-11-03 2008-11-27 Heinrich Friedrich Schröder KG Vorrichtung zur kontinuierlichen Herstellung einer flachen, geprägten Bahn

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900381A1 (de) * 1999-01-08 2000-07-13 Schroeder Heinrich Friedrich Einrichtung zur Herstellung von Extruderprodukten aus PMMA und ähnlichen Plaste mit scharf ausgeprägten, bspw. linearen Prismenreihen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952017A (en) * 1994-12-16 1999-09-14 Taisei Kako Co., Ltd. Pressure roll, and molding apparatus using the pressure roll
DE69828698T2 (de) * 1997-04-16 2006-01-12 Velcro Industries B.V. Kontinuierliches formen von befestigungsprodukten und dergleichen sowie auf diese weise hergestellte produkte
DE19943604A1 (de) * 1999-09-11 2001-03-22 Schroeder Heinrich Friedrich Verfahren zur kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, Bahnen und Platten aus Plasten und Einrichtung zur Ausübung des Verfahrens
DE102004044981A1 (de) * 2004-01-30 2005-08-18 Kark Ag Vorrichtung und Verfahren zum Formen eines Folienbandes
FR2893531A1 (fr) * 2005-11-24 2007-05-25 Airbus France Sas Procede de consolidation en continu pour l'obtention d'un materiau stratifie et dispositif pour sa mise en oeuvre
DE102007052592B3 (de) * 2007-11-03 2008-11-27 Heinrich Friedrich Schröder KG Vorrichtung zur kontinuierlichen Herstellung einer flachen, geprägten Bahn

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