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
  • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
  • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
  • B29C70/28—Shaping operations therefor
  • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
  • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
• • 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
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/56—Winding and joining, e.g. winding spirally
  • B29C53/58—Winding and joining, e.g. winding spirally helically
  • B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
  • B29C53/588—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features having a non-linear axis, e.g. elbows, toroids
• • 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
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/56—Winding and joining, e.g. winding spirally
  • B29C53/58—Winding and joining, e.g. winding spirally helically
  • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
• • 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
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/80—Component parts, details or accessories; Auxiliary operations
  • B29C53/82—Cores or mandrels
  • B29C53/821—Mandrels especially adapted for winding and joining
  • B29C53/822—Single use mandrels, e.g. destructible, becoming part of the wound 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
  • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
  • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
  • B29C70/28—Shaping operations therefor
  • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
  • B29C70/56—Tensioning reinforcements before or during shaping
• • 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
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/80—Component parts, details or accessories; Auxiliary operations
  • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
  • B29C53/8016—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners
  • B29C2053/8025—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners tensioning
• • 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
  • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
  • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
  • B29C70/28—Shaping operations therefor
  • B29C70/40—Shaping or impregnating by compression not applied
  • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
  • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
  • B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
• • 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
  • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
  • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
  • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
  • B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated

Definitions

• the invention relates to a method for producing a torus (hereinafter also referred to by the English term toroid), such as a rim for a bicycle or a ring for a computer tomograph, wherein a precursor simultaneously with several of a roll
• the invention relates to a winding machine that is prepared / set up for carrying out such a method.
• the invention relates to a bicycle rim, which is produced by such a method.
• Rim rings for a tire rim, in particular for a clincher rim proposed. The following steps are explained there: Providing a rim outer profile made of hardened
• Composite fiber providing a plastic molding element, providing at least one cover layer of composite fiber, inserting the plastic molding element radially within the Fel to combineprofils, and positioning the cover layer relative to the plastic molding element and the rim outer profile, so that at least a portion of the cover layer extends from the plastic molding element on the outside of the Felspe touchprofil.
• This prior document also relates to a method of securing composite fiber spokes to a rim ring.
• the older document also relates to a rim ring, a clincher rim and a bicycle with such a clincher rim.
• Rims have long been used on vehicles to carry a tire. Such rims are used in internal combustion engine driven vehicles, such as cars, trucks or other commercial vehicles, but in particular also muscle-powered vehicles, such as bicycles. In this field is also the patent application of the applicant DE 10 2015 102 466 A1.
• a method of manufacturing a fiber composite rim comprising the steps of: a) wrapping a core with a reinforcing thread to deposit a base layer on the core and forming a tire contact device; b) fitting the tire contact device to an aerodynamic improvement component and a reinforcing ring; and c) wrapping the tire contact means of the aerodynamic enhancement member and the reinforcing ring with one or more reinforcing threads such that a cover layer is formed.
• a rim for a vehicle with a tire contact device for fastening a wire tire or a
• the tire contact means comprises a core which is wrapped by at least one reinforcing thread so that the core is covered by at least one support layer formed by the reinforcing thread.
• the tire contact device is covered at least radially on the inside by a cover layer formed from at least one reinforcing thread and that a reinforcing ring is present between the cover layer and the tire contact device.
• the reinforcing thread may be in the form of carbon fiber, aramid fiber, and / or
• Glass fiber thread be formed. Holes for receiving spokes are present on the radial inner side of the cover layer, which also penetrate the reinforcement ring in whole or in part. Between the cover layer and the support layer is a
• Aerodynamics improvement component available.
• the aerodynamic improvement component is disposed radially inwardly of the support layer and radially outwardly of the reinforcement ring and / or covered at its axial end surfaces by the cover layer.
• the aerodynamic improvement component may be composed of four 90 ° segments. But there are also six 60 ° segments.
• a leading rim is created by a positive and / or non-positive holding together of the tire contact device, the aerodynamic improvement component and the reinforcing ring.
• the leading edge with the cover layer is wrapped in a reinforcing thread or two reinforcing threads.
• the contained portion of the leading rim (with or without cover layer) is infiltrated with resin and / or a resin pre-impregnated reinforcing thread is used.
• Tire contact device has.
• This tire contact device is formed with a core and wrapped with reinforcing threads.
• This substructure which functions as a tire contact device in the finished state, is then provided with an aerodynamic improvement component, or more segmental aerodynamic improvement components combined.
• An optional reinforcing ring can be used on the radial inside.
• Reinforcement ring then form a precursor.
• This precursor is in turn wrapped with first reinforcing fiber bundles, in such a way that the individual reinforcing fiber bundles intersect, transverse to the radial direction and at the same time extend transversely to the circumferential direction.
• Reinforcing fiber bundles are not the same size seen over the circumferential direction. Overlapping degrees are sometimes more and less pronounced.
• This object is achieved in a generic method in that the first reinforcing fiber bundles are fed so that a deviation between a
• Reinforcing fiber bundle on the respective role / coil is present, in which the roller thus has the largest possible outer diameter, and the solid angle 02 at time t.2, in which the minimum mass is determined by the first reinforcing fiber bundle on the roll, in which the rollers
• having the smallest possible outer diameter is so small that a deviation of the stress in the first reinforcing fiber bundle is ⁇ 10%, preferably ⁇ 5%, more preferably ⁇ 1%.
• the solid angle is a function of
• the solid angle is thus the unwinding angle, that is to say the angle which occurs between a radial direction of the precursor (at the winding position) and an unwinding direction of the
• the tension in the first reinforcing fiber bundles during the entire winding time ie the time in which the first reinforcing fiber bundles are applied to the precursor and even in the layers of first reinforcing fiber bundles that are already deposited on the precursor, should be targeted between an eight hundredths to one
• the voltage should be kept at least in the range of a certain value.
• the primary product wrapped with first reinforcing fibers or first reinforcing fiber bundles is then machined on the radially outer sides to produce a part of the precursor, its core and a part of the
• the rim flanges should be able to attack a cloak or clincher attack.
• the width of the roll measured transversely to the axis of rotation of the roll is less than 1/2 of the outer diameter of the roll at time t.sub.i, ie at maximum loading with the first reinforcing fiber bundle, in the region of the first reinforcing fiber bundle, but more than 1 / 39 of the outer diameter of the roll at time t.2, that is, at minimum loading with the first reinforcing fiber bundle, in the region of the first reinforcing fiber bundle.
• the solid angle ⁇ at time ti and time t.2 varies by less than 2% in any plane, the stress in the reinforcing fiber bundle or fibers may be outside held the tear area.
• Peripheral point of the precursor approximately offset in the radial direction to each other, a plurality of first reinforcing fiber bundles, for example, unwound from two, three, four or five rollers fed.
• Reinforcing fiber bundles at least a second reinforcing fiber bundle, such as 0 ° -Verstär- kungsfaserbündel on a radial inside is fed to that of the first
• Reinforcing fiber bundles is at least partially covered.
• a supply of said 0 ° -Verstärkungsmaschinebündel or at least one 0 o -Verstärkungsmaschinebündels leads to a greater load capacity in the direction of the rotation center of the later rim. Larger spoke voltages can then be realized.
• the use of three 0 ° gain fiber bundles is preferred.
• Reinforcing fiber bundle or second reinforcing fiber bundles are kept the same during the winding, with an accepted deviation of plus-minus 20%, or preferably 10%, so the reproducibility is particularly good.
• first reinforcing fiber bundle or second reinforcing fiber bundle or a second reinforcing fiber bundles define there an outer diameter which is between 30% to 10% or 24% to 16% of the outer diameter of is with the first reinforcing fiber bundles or second reinforcing fiber bundles wrapped precursor.
• the occupied with reinforcing fiber bundles role there has an outer diameter of about 130 mm to about 150 mm, preferably 140 mm and / or the empty role in the area of a support surface for the reinforcing fiber bundles has an outer diameter of about 1 10 mm to 120 mm. It has proven to be useful if a controllable or controllable brake during the winding, ie the introduction of the first reinforcing fiber bundles and / or the second
• Reinforcement fiber bundle / the second reinforcing fiber bundle acts on the role.
• An efficient feedback of information to the actuator can then be achieved with proven components.
• the tension in the reinforcing fiber bundles can be measured and further processed in such a way that the brake keeps the tension (if possible) exactly the same regardless of the degree of filling of the roller at the speed of the roller
• unwound / wound pre-product is measured and processed so that the braking force of the brake is controlled or regulated.
• the use of microprocessors and computers or computer-like components is of great use here.
• first reinforcing fiber bundles preferably two, four or six. If a plurality of rolls designed as primary rolls are used with first reinforcing fiber bundles, preferably two, four or six, then the production time can be considerably shortened.
• the primary rollers are preferably arranged hydraulically and / or pneumatically for loading and / or unloading of a winding machine used by the method or provided for insertion in order to insert and / or remove the unwound / wound precursor , On command of an operator / operator can then force a swinging and ZuJdern the winding machine.
• a roller designed as a secondary roller is used with at least one or more, preferably three, second reinforcing fiber bundles.
• the reinforcing fiber bundles can be identical.
• the first reinforcing fiber bundles may be identical to the second reinforcing fiber bundles.
• different reinforcing fiber bundles can also be used, in particular material-different reinforcing fiber bundles can be used.
• the secondary roller is arranged radially inwardly of the primary rollers, that is to say closer to the center of rotation of the intermediate product, a space-efficient arrangement of the individual components is possible.
• the axis of rotation of the secondary roll is oriented transversely, preferably orthogonally, to the axes of rotation of the primary rolls and / or parallel to the axis of rotation about which the (un) wound precursor rotates, preferably the axis of rotation picks up the axis of rotation.
• the primary rollers are distributed over the inner periphery of the precursor and axially and / or radially spaced therefrom, preferably offset along the circumference about 90 ° or 60 ° about the center of the future rim offset / spaced.
• first reinforcing fiber bundle and / or second reinforcing fiber bundles comprise / comprise carbon fibers
• the bundles or the fibers having a theoretical tensile strength of about 800 N / having a breaking load of about 800 N, then a particularly stiff but at the same time shock absorbing rim is produced become. It is advantageous if, guided by one of the primary rolls, first preferably flat reinforcing fiber bundles are / are passed after leaving the roll via a guiding kinematics before contact with the preliminary product takes place.
• the first / second reinforcing fiber bundles may be preimpregnated.
• the guiding kinematics may wrap around the precursor during winding together with the primary roller in a plane receiving the axis of rotation of the precursor.
• the guide kinematics prefferably have at least one double conical guide roller, which is oriented transversely preferably orthogonal to the radial direction, determined by the precursor.
• the precursor is mounted between a plurality, preferably four, about the circumference equally distributed drive disc pairs.
• slipping of the wound by the first reinforcing fiber bundles and pressed second reinforcing fiber bundle can be excluded.
• the axis of rotation of the intermediate product being on one of the two planes is vertical and runs parallel to the other, so on the one hand a good drive of the precursor is achieved and on the other hand prevents slipping.
• the brake acts on a cylindrical inner surface of the primary roller.
• the kinematics can have a peripheral open disc at one point. This is the
• Removability of the fully wrapped precursor beneficial, but is also beneficial for loading with the unwound precursor.
• the wound precursor is removed from the winding machine and is inserted in a preferably two-half mold, wherein at least one
• Pre-product facing stepped spoke end mounting recesses are provided.
• the sealed mold When the sealed mold is filled with high-pressure resin such as a thermosetting resin or a thermoplastic, or the mold is retracted to draw in the resin, the pressure and / or the temperature for curing is increased, and then a leading rim is removed, preferably, a radially outboard ring is removed by machining for rim flanges together with a filler or a core, so clincher rims can be manufactured efficiently.
• high-pressure resin such as a thermosetting resin or a thermoplastic
• the mold is retracted to draw in the resin
• the pressure and / or the temperature for curing is increased, and then a leading rim is removed, preferably, a radially outboard ring is removed by machining for rim flanges together with a filler or a core, so clincher rims can be manufactured efficiently.
• the voltage variance in all positions of the toroid with the reinforcement fiber bundles deposited on it is then below 10%, better even less than 1%.
• a higher yarn tension may be present on the inside than on the outside, for example due to inside 2 Newtons of thread tension and outside of 1 Newtons of thread tension, preferably smaller than 1/100 of that Tension of the thread (where thread is also synonymous with reinforcing fiber bundles used).
• the braking torque is kept the same as well as the unwinding angle / solid angle.
• the solid angle is a function of the application volume, which is a function width, diameter full and diameter empty.
• the invention also relates to a winding machine which is prepared / furnished for carrying out the method according to the invention. Also, the invention relates to a bicycle rim, which is made according to the method.
• FIG. 1 shows a perspective partial view of a winding machine
• Figure 2 is a detailed view of a role / coil with still maximum wound first
• Reinforcing fiber bundle at time ti in which adjusts a solid angle ⁇ between the first reinforcing fiber bundle and a perpendicular / radial at the contact point of the first reinforcing fiber bundle projecting with the precursor level, and
• FIG. 3 shows a detail of the roller / coil from FIG. 2 with the first reinforcement fiber bundle minimally wound at time t.sub.2, in which a solid angle 02 is established between the first reinforcing fiber bundle and a plane projecting perpendicularly / radially at the contact point of the first reinforcing fiber bundle.
• a winding machine / winding device 1 is shown in Fig. 1, in which a precursor 2 is used.
• the precursor 2 is about drive disk pairs 3, namely four
• Drive disk pairs 3, around a rotation axis 4 moves around.
• the direction of rotation is symbolized by the arrow 5.
• a special drive pulley of the respective pairs of drive disks 3 is aligned horizontally and the corresponding other drive pulley is vertically aligned. That is, passing through the corresponding drive pulley a vertical plane or a horizontal plane.
• This roller 7 is also referred to as primary roller 8, since a first reinforcing fiber bundle 9 is wound on it. In the wound state, that is completely surrounded by a first reinforcing fiber bundle 9, the diameter of the primary roller 8 in
• wound / fiber-containing area about 144 mm in diameter.
• Primary coil / primary roller 8 empty, so it has a diameter of about 1 15 mm in this area. While the diameter of the finished rim is about 634 mm, the thread tension should be between 1 N to 10 N, whereby the theoretical tensile strength of the thread is about 800 N.
• Secondary role can be designated and carries the reference numeral 10. At least one second reinforcing fiber bundle 1 1 is present thereon. The threads / fibers of the second
• Reinforcing fiber bundles 11 are attached to the radially inner side of the precursor 2 for forming a reinforcing ring layer.
• the axis of rotation of the secondary roller 10 corresponds to the axis of rotation. 4
• Pre-product 2 spent.
• two first reinforcing fiber bundles intersect, as shown in the right region of the precursor 2.
• the guide kinematics 6 allows pivoting, as indicated by corresponding arrows.
• the primary roller 8 has in the interior a contact surface 12 for a controllable / controllable brake 13.
• the brake 13 can intervene more or less strongly on the contact surface 12 of the primary roller 8 braking. Thereby, the tension in the first reinforcing fiber bundle becomes adjustable.
• the contact surface 12 is present on the radial inner side of the primary roller 8.
• the brake 13 may also engage the side / end surface or a peripheral surface, but the winding machine 1 may then be less compact and underfloor

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Composite Materials (AREA)
• Physics & Mathematics (AREA)
• Nonlinear Science (AREA)
• Moulding By Coating Moulds (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59399405

Family Applications (1)

Country Status (3)

Citations (10)

Family Cites Families (3)

• 2016
  • 2016-07-18 DE DE102016113185.7A patent/DE102016113185A1/de not_active Withdrawn
• 2017
  • 2017-07-14 TW TW106123720A patent/TW201803742A/zh unknown
  • 2017-07-17 WO PCT/EP2017/067971 patent/WO2018015326A1/de active Application Filing

Patent Citations (10)

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