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
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/30—Mounting, exchanging or centering
  • B29C33/305—Mounting of moulds or mould support plates
• • 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
  • B29C43/46—Rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B9/00—Making granules
  • B29B9/02—Making granules by dividing preformed material
  • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
  • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
  • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
  • B29B15/10—Coating or impregnating independently of the moulding or shaping step
  • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
  • B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
  • B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B9/00—Making granules
  • B29B9/12—Making granules characterised by structure or composition
  • B29B9/14—Making granules characterised by structure or composition fibre-reinforced
• • 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
  • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
  • B29C33/044—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam 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
  • 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
  • B29C43/58—Measuring, controlling or regulating
• • 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
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/05—Filamentary, e.g. strands
• • 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
  • B29C70/06—Fibrous reinforcements only
• • 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
  • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
  • B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D11/00—Heat-exchange apparatus employing moving conduits
  • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
  • F28D11/04—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller performed by a tube or a bundle of tubes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F5/00—Elements specially adapted for movement
  • F28F5/02—Rotary drums or rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B9/00—Making granules
  • B29B9/02—Making granules by dividing preformed material
  • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• • 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
  • B29C43/46—Rollers
  • B29C2043/461—Rollers the rollers having specific surface features
  • B29C2043/463—Rollers the rollers having specific surface features corrugated, patterned or embossed surface
• • 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
  • B29C43/46—Rollers
  • B29C2043/467—Rollers plurality of rollers arranged in a specific manner in relation to each other
• • 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
  • B29C43/58—Measuring, controlling or regulating
  • B29C2043/5816—Measuring, controlling or regulating temperature
• • 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
  • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
  • B29C43/24—Calendering
• • 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
  • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
  • B29C43/24—Calendering
  • B29C43/245—Adjusting calender parameters, e.g. bank quantity
• • 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
  • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
  • B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
• • 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
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
  • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
• • 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
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
  • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
  • B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/731—Filamentary material, i.e. comprised of a single element, e.g. filaments, strands, threads, fibres
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight

Definitions

• the invention relates to a device for the cross-sectional shaping of a plurality of plastic fiber bundles guided parallel next to one another over at least one rotatable shaping roller.
• Lightweight construction elements made of plastic as they are often used in the automotive industry or in aircraft construction, usually contain fiber materials made of glass or carbon to save weight while maintaining high strength.
• the fiber materials are integrated into the polymer melt of a plastic material by means of an impregnation device and then processed as plastic fiber bundles into pellets, granules or ribbons with a defined cross section, which are used in subsequent systems and processes, in particular injection molding processes, to produce the lightweight construction elements.
• the cross-sectional shaping or calibration of the impregnated fiber bundles can, in the simplest case, take place via a nozzle with a defined diameter.
• more precise cross-sectional shaping can only be achieved in a partially solid but still heated state of the fiber bundle mixed with plastic material, so that for more precise calibration it is necessary to first cool the plastic fiber bundle in a water bath after it emerges from the nozzle and then in to reshape deformable state.
• rollers which cool the still warm or hot plastic fiber bundles in surface depressions with a defined cross section before the plastic fiber bundles are rolled up or fed to a granulator.
• a forming roller for cross-sectional shaping is usually connected immediately after the water bath of an impregnation unit.
• it is necessary to adapt the forming roller to such different cross-sections which is usually done by the forming roller with a forming roller according to the new task is replaced according to the changed cross-sectional shape of the mold recesses.
• Changing a forming roller and cleaning it can be complex and time-consuming, especially if several forming rollers are arranged one behind the other.
• the object is therefore to provide a device for the cross-sectional shaping of a large number of impregnated plastic fiber bundles guided in parallel, the shaping roller (s) of which improves the roundness of the plastic fiber bundles, the downtime of which can be kept short when one or more shaping rolls are changed, which is compact , at the same time enables effective cooling of plastic fiber bundles and is adjustable to a large extent.
• a forming roller is used which is mounted in lateral guide plates by means of a quick-change device.
• the end face of the forming roller has rotary couplings via which liquid media, in particular for cooling, are passed through the forming roller. After separating the feed and discharge lines for the rotary couplings and removing the quick-change device, the forming roller can simply be removed from the frame.
• three similar forming rollers are used for reshaping plastic fiber bundles, which are arranged triangularly and each provided on their surface with a plurality of parallel circumferential shaped depressions, in which the cross section of supplied plastic-impregnated fiber bundles corresponds to the cross-sectional shape of the shaped depressions is malleable.
• the fiber bundles are placed between a pair of two successive forming rollers on a first side of the fiber bundles and a third forming roller, which is located on the second side of the plastic fiber bundles in the direction of travel of the plastic fiber bundles between the first and second forming rollers of the pair of forming rollers , passed through.
• the distance between the forming rollers can be adjusted horizontally and / or vertically.
• the surface temperature of the forming rollers is preferably controllable.
• the number of forming rollers and their arrangement to one another can also be selected differently as required. In the case of very high demands on dimensional accuracy or in the case of special polymers, a larger number of forming rollers acting on the fiber bundle, e.g. an arrangement with 2 x 3 forming rollers can be selected.
• This embodiment of the invention allows an effective cross-sectional shaping of plastic fiber bundles as they pass through the gap between the forming rollers with simultaneous cooling, so that the plastic fiber bundles leave the device with a defined cross-sectional shape.
• the adjustment of the distance between the forming rollers in their horizontal and vertical position enables the tension of the plastic strands to be controlled, their dwell time on the forming rollers and corresponding control of the cooling effect.
• the forming rollers are preferably arranged such that a first and a second forming roller lie in a horizontal plane below the plastic strands and a third forming roller above the plastic strands at a vertical distance from the first and second forming rollers.
• the vertical position of the third forming roller is preferably selected so that this forming roller presses the plastic fiber bundles between the first and second forming rollers in order to widen the angle of wrap of the forming rollers touched by the plastic strands, to increase the force of the plastic strands to penetrate the molded indentations and thus improving the molding quality.
• the arrangement of the lower and upper forming rollers to one another can also be mirrored in the vertical.
• the forming rollers are preferably supported at the end in lateral guide plates of a frame, a first pair of guide plates receiving the first and second forming rollers and a second pair of guiding plates carrying the third forming roller.
• Leave the guide plates preferably move vertically via rod guides, the displacement taking place synchronously in order to be able to carry out the displacement evenly over the entire length of the forming rollers.
• the horizontal distance between the first and second forming rollers is adjustable.
• the vertical arrangement of the forming rollers in relation to the top or bottom of the plastic fiber bundle can also be reversed.
• fiber bundles impregnated with plastic, pellets and granules made from them can be calibrated in such a way that their roundness is improved, that they are again milled through during molding to improve their properties, so that they run better in subsequent transport systems and eventually have a better appearance.
• Fig. 1 is an isometric view of an apparatus for cross-sectional shaping of
• FIG. 3 shows an enlarged view of a quick-change device for a forming roller
• FIG. 4 shows an end view of the quick-change device for a forming roller.
• the device shown in FIG. 1 contains a frame 1 which is essentially formed from a pair of upper bridge girders 5 and a pair of lower bridge girders 4, which are connected to one another via four vertical guide rods 7, 8, 9.
• the frame 1 can be moved on a rail arrangement with two parallel rails 2 and 3 by means of a handwheel 6 in a horizontal plane.
• On the guide rods 7, 8, 9, a pair of upper guide plates 10, 12 and a pair of lower guide plates 11, 13 are arranged vertically displaceably one above the other.
• the pair of guide plates 10, 12 can be raised or lowered via hydraulic lifting devices 14, 15. Accordingly, the pair of lower guide plates 12, 14 can be raised or lowered via the lower lifting devices 16, 17.
• the pairs of guide plates are assigned a pair of toothed wheels 21 connected to one another via a connecting rod, which mesh with a pair of toothed racks 22 on both sides of the device and thus allow a parallel adjustment of the guide plates.
• an upper forming roller 18 is arranged, the axis of which is laterally freely rotatably mounted in the guide plates 10, 12.
• the pair of lower guide plates 11, 13 carries two parallel and spaced-apart lower forming rollers 19, 20, the three forming rollers being arranged essentially in a triangular shape with a horizontal base in which the lower forming rollers 19, 20 are also exposed are rotatable.
• the plastic fiber bundles are passed through the device according to the invention in two groups parallel to each other through the gap between the first lower forming roller 19 and the upper forming roller 18 and then through the gap between the upper forming roller 18 and the second lower one Form roller 20 passed through.
• the vertical distance between the upper forming roller 18 and the lower forming rollers 19, 20 and the horizontal distance between the lower forming rollers 19 and 20 is set so that the plastic fiber bundles on the forming rollers have a wrap angle of about 2 - 20 °, preferably 5 - 6 °, based on the respective forming roller.
• the distance between the upper forming roller 18 and the lower forming rollers 19, 20 can be selected to be so small that the upper and lower forming rollers touch and thus touch can run synchronously, provided that the plastic fiber bundles do not protrude too far from the mold depressions.
• the distance between the lower forming rollers can be increased and at the same time the vertical distance between the upper forming roller and the lower forming rollers can be reduced.
• the forming rollers 18, 19, 20 are fastened on the front side in the guide plates 10-13 via quick-change devices. They can therefore be removed from the device in a simple manner and exchanged for maintenance or replacement.
• Figures 2 and 3 show the upper forming roller 18 in a sectional side view.
• the lower forming rollers 19 and 20 are designed essentially identically to the upper forming roller.
• the shaping roller 18 is designed as a sleeve and carries on its outside a plurality of circumferential shaped recesses arranged in parallel.
• the forming roller 18 is mounted in the lateral guide plates 10, 12 via the quick-change devices 24, 35.
• the axis of the forming roller 18 is designed as a displacement cylinder 26, in particular made of plastic, with a free circumferential annular gap 29 running between the inner wall of the forming roller 18 and the displacement cylinder 26 through which a liquid medium, in particular water, is passed to cool the outer wall of the forming roller 18 becomes.
• the cooling medium is supplied to one end of the forming roller via the connection 36 and the rotary coupling 34, is guided via the axle bore 30 and the distributor channel 27 to the annular gap 29, then passes through the annular gap 29 and is discharged again at the other end of the forming roller.
• the cooling circuits of the three forming rollers can be operated in parallel or in series.
• the device according to the invention can be operated not only for cooling the surface of the forming rollers, but in alternative applications also for heating by means of heated water or, if even higher temperatures are required, also with oil or correspondingly suitable alternative fluids.
• the diameter of the upper and lower forming rollers is preferably the same, but can also be selected differently for certain cases.
• a diameter suitable for the purposes of the invention is approximately 150 mm.
• the rounding diameter in the recesses is preferably 1.8 to 3.5 mm.
• FIG. 3 shows a cross-sectional view of the quick-change device 35 used for storing and supplying and removing cooling medium.
• the sleeve-shaped forming roller 18 is fastened at the end in a bearing housing 33 which is rotatably mounted on a hollow shaft 37 via bearings 31, 32.
• the hollow shaft 37 is received on the front side in a hollow shaft receptacle 23, which is inserted into the guide plates 10, 12 as part of the quick-change device 24, 35.
• the hollow shaft 37 is provided with a hydraulic rotary coupling 34, via which the forming roller 18 is supplied with cooling medium which is transferred from the rotating coupling 34 via the axis bore 30 of the hollow shaft 37 and the distribution channels 27 into the annular gap 29 and vice versa at the other end of the forming roller is discharged again. Since the hollow shaft 37 and the displacement cylinder 26 are not rotatable, a seal 38 is provided between the rotating bearing housing 33 and the non-rotating hollow shaft 30.
• FIG 4 the end face of a quick change device is shown.
• Two pivot levers 25, 28 are provided for fastening the forming roller in the guide plates.
• a hose must first be uncoupled from the central connection 36 and the rotary coupling 34.
• the two pivot levers 25, 28 must be released and pivoted through 90 ° so that the hollow shaft receptacle can be axially removed laterally from the guide plate and the hollow shaft 37 only rests on a support strip 39, which is attached to the guide plate 10.
• the hollow shaft can now be removed from above or to the side.
• the hollow shaft is inserted in the opposite way.
• the convex shape of the carrier strip 29 and the carrier part 40 of the hollow shaft receptacle 23 reaching through the guide plate secure the hollow shaft in the radial direction in the installed state.
• the subject matter of the invention has a compact structure, can be easily serviced and allows an effective post-forming with improved roundness of fiber bundles soaked with plastic before further processing, in particular pelletizing or granulating.
• the device is preferably completed with top and side cover plates, not shown in the drawings.
• Handwheel 26 Displacement cylinder Guide rod 27 Distribution channel

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Composite Materials (AREA)
• Moulding By Coating Moulds (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)

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• 2019
  • 2019-05-13 EP EP19174180.0A patent/EP3738740B1/de active Active
• 2020
  • 2020-05-11 CN CN202080035801.5A patent/CN113825605A/zh active Pending
  • 2020-05-11 KR KR1020217037390A patent/KR20220007864A/ko not_active Ceased
  • 2020-05-11 WO PCT/EP2020/063022 patent/WO2020229397A1/de not_active Ceased
  • 2020-05-11 US US17/595,240 patent/US20220212368A1/en not_active Abandoned
  • 2020-05-11 JP JP2021568188A patent/JP7476236B2/ja active Active

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