WO2020200431A1 - Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique - Google Patents

Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique Download PDF

Info

Publication number
WO2020200431A1
WO2020200431A1 PCT/EP2019/058306 EP2019058306W WO2020200431A1 WO 2020200431 A1 WO2020200431 A1 WO 2020200431A1 EP 2019058306 W EP2019058306 W EP 2019058306W WO 2020200431 A1 WO2020200431 A1 WO 2020200431A1
Authority
WO
WIPO (PCT)
Prior art keywords
impregnator
fiber
zone
fibers
core
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/EP2019/058306
Other languages
English (en)
Inventor
Frank Dudde
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.)
TK Elevator Innovation and Operations GmbH
Original Assignee
ThyssenKrupp Elevator Innovation and Operations 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 ThyssenKrupp Elevator Innovation and Operations GmbH filed Critical ThyssenKrupp Elevator Innovation and Operations GmbH
Priority to PCT/EP2019/058306 priority Critical patent/WO2020200431A1/fr
Publication of WO2020200431A1 publication Critical patent/WO2020200431A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
    • D07B7/145—Coating or filling-up interstices
    • 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
    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/523—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00—Producing belts or bands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • the present invention is generally directed to composite elevator belts for use in lifting and lowering an elevator car. More particularly, the present invention relates to a tapered core impregnator for use in a process of producing a composite elevator belt comprising at least one load carrier. It also relates to a production process for making a composite elevator belt comprising at least one load carrier.
  • Elevators for vertically transporting people and goods are an integral part of modern residential and commercial buildings.
  • a typical elevator system includes one or more elevator cars raised and lowered by a hoist system.
  • the hoist system typically includes both driven and idler sheave assemblies over which one or more tension members attached to the elevator car are driven.
  • Tension members can also be attached to the counterweight or building structure itself.
  • the elevator car is raised or lowered due to traction between the tension members and drive sheaves.
  • tension member types including wire rope, V-belts, flat belts, and chains, may be used, with the sheave assemblies having corresponding running surfaces to transmit tractive force between the tension members and the sheave assemblies.
  • a limiting factor in the design of current elevator systems is the minimum bend radius of the tension members. If a tension member is flexed beyond its minimum bend radius, the compressive forces within the tension member may exceed the breaking strength of the tension member material. Continuous operation of the tension members below their minimum bend radii can cause fatigue at an increased and unpredictable rate and, under extreme circumstances, may result in elastic deformation and failure. Thus, minimum size of the sheaves useable in an elevator system is governed by the minimum bend radius of the tension members. For several reasons, sheaves having a smaller diameter allow for more economical elevator system designs. First, the overall component cost of an elevator system can be significantly reduced by using smaller diameter sheaves and sheave assemblies. Second, smaller diameter sheaves reduce the motor torque necessary to drive the elevator system, thereby permitting use of smaller drive motors and allowing for smaller hoistway dimensions. Additionally, decreasing the bend radius of the tension members generally permits easier installation and decreases the spool size of the tension members.
  • a fiber volume fraction is the percentage of fiber volume in the entire composite volume comprising fibers and matrix material.
  • the invention provides a solution to the above problem and is described in the following embodiments.
  • the invention relates to:
  • the core impregnator for use in a process of producing a composite elevator belt.
  • the core impregnator preferably comprises:
  • the point of fiber entry has a height larger than the point of fiber exit such that the inner cavity of the core impregnator is tapered.
  • the fibers are preferably in a desired orientation which will become the fiber orientation of the cross- section of the composite elevator belt. As the fibers pass from the point of entry to the point of exit, they can be advantageously orientated via control of the supply of resin material. This will be described in more detail in the figure description.
  • the impregnator according to embodiment 111 characterized in that the height difference between the point of fiber entry and the point of fiber exit is in a range from 0.1 mm to 1.5 mm, preferably in a range from 0.2 mm to 0.7 mm, more preferably in a range from 0.3 mm to 0.5 mm.
  • the inner cavity comprises a tapered angle (b) wherein b preferably lies in a range of 0.01 to 2 degrees, more preferably b lies in a range 0.03 to 1 degree.
  • a lower b value indicates a longer core impregnator and thus one in which the pressure differential within the cavity will be lower. This affects the distribution of the fibers throughout the cross-section of the at least one load carrier. The relationship between the tapering and pressure will be explained in more detail in the figure description.
  • An example of such a pressure regulating means is a resin backflow tube.
  • This advantageously provides that the pressure within the impregnator is controllable.
  • pressure can be further controlled.
  • the pressure within the inner cavity of the impregnator is in the range of 0.1 to 3 MPa.
  • the impregnator according to any of the preceding embodiments, characterized in that it comprises a plurality of zones.
  • the zones are located in the cavity and include an injection zone L,; a pressurizing zone L p ; a flow zone L f and a stabilizing zone L s .
  • the injection zone L j is preferably located at the point of fiber entry
  • the stabilizing zone L s is preferably located at the point of fiber exit.
  • the pressurizing zone L p is preferably located between the point of fiber entry and the flow zone L f
  • the flow zone L f is preferably located between the stabilizing zone L s and the pressurizing zone L p .
  • the impregnator according to any of the preceding embodiments, characterized in that it is adapted to withstand pressures in a range of 0.1 to 3 MPa.
  • the pressure varies according to the movement of the fibers and the resin material through the impregnator.
  • the pressure varies as the fibers travel through each of the injection zone L j ; the pressurizing zone L p ; the flow zone L f and the stabilizing zone L s .
  • the invention also relates to:
  • a production process for a composite elevator belt comprising the steps of:
  • a fiber spool rack comprising a plurality of spools wherein each spool comprises a fiber
  • pultrusion die preferably curing is performed in the pultrusion die
  • the core layer material can be the same as the resin material used to saturate the fibers or different;
  • further treating comprises at least one of shaping, curing; cooling; extrusion.
  • the composite elevator belt may also optionally comprise a jacket layer. This
  • the“finished product” i.e., the composite elevator belt having at least one load carrier with a desired fiber volume fraction throughout its cross-section.
  • Fig. 1 a schematic representation of a cross-section of a core impregnator according to the invention
  • Figs. 2a-2b a schematic representation of a core impregnator according to the invention comprising a pressure regulating means
  • Fig. 3 a schematic representation of a manufacturing apparatus used in the process according to the invention
  • Fig. 4 a step diagram of a process for producing a composite elevator belt using a
  • Figs 5a-5c schematic representations of a composite elevator belt comprising differing fiber volume fractions V f .
  • Fig. 1 shows a core impregnator 2200 according to the invention comprising an inner cavity with walls 2220, a point of fiber entry El and a point of fiber exit E2 wherein fibers 10 are fed into the cavity 2220 at the point of fiber entry El .
  • the height difference between the points El and E2 provides the tapering of impregnator 2200.
  • the impregnator 2200 comprises two openings 2210 into the cavity 2220. Through the cavity openings 2210, the cavity is supplied with resin material.
  • An example of an opening 2210 includes a nozzle. In this particular example, the opening 2210 is an automated nozzle.
  • a first nozzle 2210 is located on a tapered side which is adjacent to the point of fiber entry El .
  • a second nozzle 2210 is located on an opposite tapered side adjacent to the point of fiber entry El.
  • the nozzles 2210 lie on an injection plane 47 and provide a supply of resin material (shown by arrow la) to an injection zone Li of the cavity 2220.
  • the impregnator comprises four zones, the injection zone with the length Li; a pressurizing zone with the length Lp; a flow zone with the length Lf; and a stabilizing chamber zone with the length Ls.
  • the length of the tapered part LT of the impregnator is:
  • the total length L of the impregnator is:
  • the cavity is not yet pressurized since the fibers have not entered the pressurizing zone L p ..
  • the resin material (not shown) contacts the passing fibers 10 in the injection zone L .
  • the fibers move at a speed Vx wherein Vx is preferably in the range from 0.5 to 4 m/min in the pulling direction D P .
  • the pressure from the incoming resin material from the nozzles 2210 causes the fibers 10 to be pushed to the central area of the cavity 2220, thus providing at least one load carrier 70 having a higher fiber density in its center, i.e., a higher fiber fraction volume V f , e.g. 70 %.
  • the at least one load carrier 70 is preferably comprised within a core layer 20, wherein the core layer is preferably comprised of the same resin material. It is also envisaged that the core layer can be comprised of a different material.
  • the volume of the cavity 2220 decreases towards the point of fiber exit E2, this causes the pressure P T to rise and at this point the fibers 10 enter the pressurized zone L p .
  • the impregnated fibers 10 are pressurized which helps to saturate them with the resin material and release any air trapped in the fiber-resin mixture.
  • the pressure P T reaches a certain level for example between 0.2 and 4.0 MPa, or between 0.3 and 3.0 MPa, and the pulling force in direction D P provided by the tractor 2500 (shown in Fig. 3) as well as fiber velocity remains constant and the pressure P T reaches a critical level.
  • the impregnator 2200 further comprises at least one pressure regulating means 2230.
  • the pressure regulating means 2230 is adapted to allow for a continuous backflow of resin material which reduces the pressure by 0.1 to 2 MPa in the flow zone L f and creates a resin flow to the center of the flow zone.
  • the resin flow pulls the fibers to the center of the cavity 2220 which allows adjustment to a desired fiber volume fraction distribution throughout the cross section of the load carrier.
  • the fiber volume fraction is mainly adjusted in the flow zone L f .
  • An example of a pressure regulating means 2230 can be a tube.
  • the pressure regulating means 2230 used in this example comprises a plurality of tubes positioned in a row across the center of the cavity 2220. This is shown more clearly in Figs. 2a and 2b. For illustration purposes, only one tube 2230 is shown in fig. 1.
  • the resin travels through the tubes 2230 from the high-pressure zone L p or the beginning of the flow zone L f (see arrows Id) back to the low pressure zone of the injection zone L .
  • the resin volume which flows back to the injection zone L is also controlled by the inner cross section of the tubes as well as the number of tubes.
  • the resin entrance plane of the tubes is between the pressure chamber and the flow chamber zone.
  • the high-pressure zone can also comprise the flow zone L f .
  • the number of pressure regulating means 2230 used depends on their diameter and the pressure differential between the injection zone L and the flow zone L f .
  • the backflow resin exits the tubes 2230 in the injection zone Lj and travels once again in the pulling direction D p (arrows lc).
  • This backflow resin improves the fiber saturation of the incoming fibers in the central area of the cavity 2220 while the outer areas of the incoming fibers 10 are saturated by the resin supplied by the nozzles 2210. This provides for better overall saturation of the fibers 10 and thus a higher quality of the load carrier 70 and consequently a higher quality of the belt 100.
  • the backflow of resin in the center also lowers the pressure in the cavity 2220 and ensures the fibers 10 maintain the desired fiber volume fraction V F .
  • the release of pressure through the backflow tubes 2230 allows for higher belt production speeds. Thus, the overall quality of the belt and the efficiency with which it is produced is improved.
  • the fibers 10 and resin continue in the pulling direction D P into the flow L f zone.
  • the resin material can still travel back through the pressure regulating means 2230 (backflow) if the pressure in this zone is too high.
  • the dashed lines shown by reference number 2 indicate the areas of pressure within the impregnator 2200.
  • the stabilizing zone L the core impregnator 2200 is no longer tapered and the pressure stabilizes so that the load carrier 70 is stable for entering the pultrusion die (see Fig. 3). No backflow of resin occurs in this zone.
  • the shape of the load carrier 70 and thereby the shape of the belt 100 is preferably determined.
  • the load carrier 70 having the desired fiber volume fraction V exits the impregnator 2200 at the point of exit E2.
  • the desired fiber volume fraction V can be an even distribution of fibers 10 arranged equally over the cross-section of the load carrier 70; or be such that a higher fiber volume fraction V f is present in the center of the load carrier 70; or be such that varying fiber volume fractions V f exist at various positions throughout the load carrier 70 (shown in Figs 5a to 5c).
  • the preferred fiber volume fraction involves having a higher fiber volume fraction V F in the center of the load carrier 70 since this is particularly advantageous for belt flexibility.
  • the rate of resin backflow through the pressure regulating means 2230 can be optionally controlled, thereby also allowing for a degree of control of the resulting fiber volume fraction V .
  • Such control can be in the form of, for example, changing the diameter of the tube 2230 at one or more points throughout its length; altering the distance between the tubes 2230 (these are demonstrated more clearly in Figs. 2a and 2b); altering the pressure at the nozzles 2210 supplying the resin material; adjusting the pulling speed of the tractor 2500; utilizing a magnetic field outside the tube 2230 and positioning a complimentary communication means within the tube 2230, or within the resin material itself; using a piezo-electric material, e.g. a piezo wall, as the pressure regulating means.
  • Altering the rate of resin backflow can affect the spacing between the fibers 10 and thereby their location in the cross-section of the load carrier. A higher flow rate will push more fibers towards the center of the cross section and give a higher spacing in the outer areas of the cross section whereas a lower flow rate will give a smaller spacing in the outer areas.
  • the spacing between fibers can also affect the bending properties of the resulting composite elevator belt 100. Thus, it is very advantageous to be able to control the rate of resin back flow.
  • Fig 2a shows another perspective of the core impregnator 2200 according to the invention and as described in fig. 1. It comprises a point of entry El, a point of exit E2, a plurality of openings 2210 and a plurality of pressure regulating means 2230 positioned throughout the central area of the cavity 2220.
  • the pressure regulating means 2230 is in the form of tubes which lie in the longitudinal direction of the impregnator 2200 and are spaced laterally across the cavity 2220 (arrow A).
  • Fig. 2b shows an exploded view of the tubes as depicted by arrow A.
  • the tubes 2230 each have a diameter D and are spaced at a distance B from each other. Both the distance of the spacing B and the diameter D can be varied according to the desired fiber volume fraction V distribution.
  • each tube 2230 may the same or different. It is also envisaged that the diameter D of one tube 2230 may be the same as or different to the diameter of other tubes 2230. All variations are ultimately determined by the desired fiber volume fraction V F .
  • Fig 3 illustrates a manufacturing apparatus 2000 for making the composite elevator belt 100. Production of the composite elevator belt 100 proceeds in the pulling direction D P through the components of the manufacturing apparatus 2000.
  • manufacturing apparatus 2000 include a fiber spool rack 2100, a core impregnator 2200 as described in fig. 1, a pultrusion die 2300, wherein curing 2340 is also preferably carried out, (curing is shown in fig. 2 as a separate step however this is merely for illustration purposes) a jacket extruder 2400, a tractor 2500, and a spooler 2600.
  • the fiber spool rack 2100 includes one or more spools 2110 on which the fibers 10 are wound.
  • Each fiber 10 of the composite elevator belt 100 may be associated with one of the spools 2110.
  • the one or more spools 2110 may be free-spinning such that a tension force applied to free ends of the fibers 10 causes the fibers 10 to be unwound from the one or more spools 2110. In some embodiments, the one or more spools 2110 may be motorized to assist in the unwinding of the fibers 10 or to apply a defined tension force of the fibers.
  • the core impregnator 2200 is the impregnator already described in fig. 1. It is configured to pre-form a core layer 20 comprising at least one load carrier 70 having a desired fiber volume fraction V F .
  • the pultrusion die 2300 is configured to finalize the encasing of the fibers 10 with the core layer 20 and optionally to apply a first and second plurality of teeth (not shown) to the core layer 20.
  • the pultrusion die 2300 includes a housing (not shown) and defining one or more resin chambers (not shown). Both ends of the housing (not shown) along the pulling direction D P have openings to allow the partially formed composite elevator belt 100 to be pulled through the housing.
  • the pultrusion die 2300 further includes a central heating element (not shown) configured to heat the fibers 10, the core layer 20 within the housing.
  • the pultrusion die may further include an entry heating element (not shown) and/or exit heating element (not shown) to finely adjust the temperature of the partially formed composite elevator belt 100 entering and/or exiting the housing.
  • Material is supplied to the resin chambers of pultrusion die 2300 via injection openings (not shown) in the housing.
  • the central heating element may include one or more induction coils (not shown) configured to generate eddy currents in the fibers 10, which may be electrically conductive, according to well- known principles of induction heating, bleating of the fibers 10 causes the partially-formed composite elevator belt 100 to be heated from the inside out, thereby reducing the occurrence of air bubbles as the core layer 20 cures.
  • the core layer 20 material may include conductive additives also capable of being heated by the induction coils.
  • Other embodiments of the central heating element may utilize heating devices other than induction coils.
  • the entry heating element and/or exit heating element may include induction coils or other heating devices.
  • the central heating element, entry heating element, exit heating element, and cooling chambers are configured to work in conjunction to finely control the temperature of the partially-formed composite elevator belt 100 throughout the formation of the core layer 20 comprising at least one load carrier 70.
  • the pultrusion die 2300 permits a wider variety of materials to be used in production of the composite elevator belt 100 than is possible utilizing conventional pultrusion processes.
  • the core layer 20 may be formed of fast curing materials, allowing the overall production speed of the composite elevator belt 100 to be increased relative to conventional pultrusion processes.
  • the jacket extruder 2400 is configured to form a jacket layer (not shown) of the composite elevator belt 100.
  • the jacket extruder 2400 includes at least one extruder head (not shown) for depositing the material that forms the jacket layer.
  • the jacket extruder 2400 is the final component that performs a shaping or forming operation to the partially formed composite elevator belt 100.
  • the composite elevator belt 100 exits the jacket extruder 2400 in a finished state having all of the desired structural features.
  • the jacket extruder 2400 has openings at both ends along the pulling direction D P to allow the partially formed composite elevator belt 100 to enter the jacket extruder 2400 and the finished composite elevator belt 100 to exit the jacket extruder 2400.
  • the tractor 2500 applies a pulling force to pull the composite elevator belt 100 through the preceding components of the manufacturing apparatus 2000.
  • the pulling force of the tractor 2500 is imparted to the composite elevator belt 100 by one or more driven rollers 2510 configured to frictionally engage the finished composite elevator belt 100 exiting the jacket extruder 2400.
  • the driven rollers 2510 may be rotated by a motor to govern the speed of the manufacturing process.
  • the spooler 2600 is configured to wind the finished composite elevator belt 100 into a spool for packaging.
  • the spooler includes a driven axle (not shown) configured to wind the composite elevator belt 100 into a spool at the same rate at which the tractor 2500 pulls the composite elevator belt 100.
  • Fig. 4 is a step diagram 3000 of a process for producing the composite elevator belt 100 using the manufacturing apparatus 2000 described above.
  • the method includes using the tractor 2500 to pull the fibers 10 through the core impregnator 2200, the pultrusion die 2300, and the jacket extruder 2400 to form the finished composite elevator belt 100.
  • the tractor 2500 unwinds the fibers 10 from the spools 2110 of the fiber spool rack 2100.
  • the spools 2110 may be motorized or equipped with a brake to provide a constant pre-tension in the fiber strands 10 to enhance the quality of the finished composite elevator belt 100 and to prevent compression forces in the fibers 10 due to unequal cooling during the curing of the manufacturing process.
  • the fibers 10 are pulled by the tractor 2500 into the core impregnator 2200, where the fibers 10 are coated with the resin material forming the core layer 20 comprising at least one load carrier 70 having a desired fiber volume fraction V F .
  • the partially-formed composite elevator belt 100 i.e., the core layer 20 comprising the at least one load carrier 70 having a desired fiber volume fraction V F is pulled by the tractor 2500 into the pultrusion die 2300.
  • the incoming fibers 10 can be heated by the entry heating element (not shown) to a predetermined temperature for optimal curing control.
  • the partially-formed composite elevator belt 100 is pulled by the tractor 2500 into the jacket extruder 2400. Additionally, the core layer 20, if not fully cured already, finishes its curing process.
  • the finished composite elevator belt 100 is wound onto the spooler 2600 via the driven axle (not shown).
  • the driven axle may be calibrated to wind the composite elevator belt 100 onto the spooler 2600 at the same rate at which the composite elevator belt 100 is pulled by the tractor 2500 in order to prevent the occurrence of slack in the composite elevator belt 100.
  • the composite elevator belt 100 is wound onto the spooler 2600 until the desired length of the composite elevator belt 100 has been attained.
  • the spool of the composite elevator belt 100 may be removed from the spooler 2600.
  • the composite elevator belt 100 may be produced to a theoretically infinite length limited only by the supply of the raw materials for the strands 10, core layer 20, and jacket.
  • Steps 3100-3500 may be performed concurrently with one another as the composite elevator belt 100 is continuously drawn through the manufacturing apparatus 2000. That is, as a first portion of fibers 10 are being drawn off the spools 2110, a second portion of fibers 10 are being treated in the core impregnator 2200 and a third portion of fibers 10 are being treated in the jacket extruder 2400. It should be understood that the first, second, and third portions of the partially-formed composite elevator belt 100 referred to above are not discrete, but rather are continuously changing as the partially-formed composite elevator belt 100 is drawn through the manufacturing apparatus 2000.
  • steps 3100-3500 may be performed as discrete operations rather than as a continuous process.
  • steps 3100-3300 may be performed to unwind the fibers 10 from the fiber spool rack 2100 and form the core layer 20 comprising at least one load carrier 70.
  • the load carrier may then be wound onto a temporary storage spool, and steps 3400-3500 may be performed separately.
  • this embodiment is merely exemplary, and those skilled in the art will appreciate that any individual step or combination of steps 3100-3500 may be performed as a discrete process distinct from the remaining steps 3100-3500.
  • Figs. 5a to 5c show three examples of a cross-section composite elevator belt 100 comprising a load carrier 70 wherein each example shows a load carrier 70 having a different fiber volume fraction V throughout its cross-section.
  • the belt 100 shown in each of fig 5a, 5b, 5c comprises one load carrier 70 - this is for illustration purposes only. It is envisaged that a composite elevator belt 100 obtained according to the invention comprises one or more load carriers 70.
  • Fig. 5a shows a belt 100 comprising a core layer 20 wherein the core layer 20 comprises a load carrier 70 surrounded by resin material 3.
  • the load carrier 70 comprises fibers 10 and has a fiber volume fraction V F such that the fibers 10 are arranged equally over the cross-section of the load carrier 70.
  • Fig. 5b shows a belt 100 comprising a core layer 20 wherein the core layer 20 comprises a load carrier 70 surrounded by resin material 3.
  • the load carrier 70 comprises fibers 10 arranged such that a higher fiber volume fraction V f exists in the center of the load carrier 70. This orientation is particularly desired for belts with improved flexibility.
  • Fig. 5c shows a belt 100 comprising a core layer 20 wherein the core layer 20 comprises a load carrier 70 surrounded by resin material 3.
  • the load carrier 70 comprises fibers 10 arranged such that varying fiber volume fractions V f exist at various positions throughout the cross-section of the load carrier 70. This orientation is desired when more than one fiber bundle or cord needs to be arranged in one resin body, thus providing for a more economical manufacture via only one pultrusion step. Such designs provide a compromise between flexibility and strength.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un dispositif d'imprégnation d'âme (2200) destiné à être utilisé dans un procédé de production d'une courroie d'ascenseur composite. L'imprégneur d'âme comprend au moins une ouverture pour fournir un matériau de résine à une cavité interne (2220) de l'imprégneur ; un point d'entrée de fibre (E1) ; un point de sortie de fibre (E2) ; le point d'entrée de fibre ayant une hauteur supérieure au point de sortie de fibre de telle sorte que la cavité interne et donc l'imprégneur (2200) est conique. L'invention concerne également un procédé de production d'une courroie d'ascenseur composite à l'aide dudit imprégneur d'âme conique (2200).
PCT/EP2019/058306 2019-04-02 2019-04-02 Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique Ceased WO2020200431A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/058306 WO2020200431A1 (fr) 2019-04-02 2019-04-02 Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/058306 WO2020200431A1 (fr) 2019-04-02 2019-04-02 Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique

Publications (1)

Publication Number Publication Date
WO2020200431A1 true WO2020200431A1 (fr) 2020-10-08

Family

ID=66102058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/058306 Ceased WO2020200431A1 (fr) 2019-04-02 2019-04-02 Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique

Country Status (1)

Country Link
WO (1) WO2020200431A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250346454A1 (en) * 2024-05-07 2025-11-13 Otis Elevator Company Twist resistant elevator suspension member

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556888A (en) * 1967-06-23 1971-01-19 Glastrusions Pultrusion machine and method
US3960629A (en) 1975-01-31 1976-06-01 William Brandt Goldsworthy Method for inductive heat curing of conductive fiber stock
EP0542709A1 (fr) * 1991-11-13 1993-05-19 Monsanto Company Procédé et dispositif pour la fabrication de matériaux composites
US5492583A (en) * 1992-11-16 1996-02-20 Geotek, Inc. Apparatus and method for in-line coating of pultrusion profiles
JPH08339725A (ja) * 1995-06-12 1996-12-24 Mitsubishi Cable Ind Ltd 平形ケ−ブルの製造方法
US6048427A (en) * 1995-06-07 2000-04-11 Owens Corning Fiberglas Technology, Inc. Methods for resin impregnated pultrusion
DE102011005329A1 (de) * 2011-03-10 2012-09-13 Sgl Carbon Se Verfahren und Vorrichtung zur Herstellung eines faserverstärkten Verbundwerkstoffs und insbesondere eines Zugträgers
US8343410B2 (en) 2007-02-24 2013-01-01 Evonik Degussa Gmbh Induction-assisted production method
CN104552988A (zh) * 2014-12-30 2015-04-29 天津高盛钢丝绳有限公司 一种超轻质复合材料曳引带的制备方法及制备系统
US9126805B2 (en) 2012-02-13 2015-09-08 Kone Corporation Rope of an elevator and a method for manufacturing the rope
EP3330209A1 (fr) * 2016-12-02 2018-06-06 Otis Elevator Company Éléments de tension non métalliques surtressés
EP3351362A1 (fr) * 2015-02-13 2018-07-25 Hexcel Composites GmbH & CoKG Appareil de pultrusion
WO2018177803A1 (fr) * 2017-03-31 2018-10-04 Kraussmaffei Technologies Gmbh Boîte d'injection pour une installation de pultrusion pour la fabrication de profilés en matière synthétique renforcés par des fibres, en particulier de barres en matière synthétique

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556888A (en) * 1967-06-23 1971-01-19 Glastrusions Pultrusion machine and method
US3960629A (en) 1975-01-31 1976-06-01 William Brandt Goldsworthy Method for inductive heat curing of conductive fiber stock
EP0542709A1 (fr) * 1991-11-13 1993-05-19 Monsanto Company Procédé et dispositif pour la fabrication de matériaux composites
US5492583A (en) * 1992-11-16 1996-02-20 Geotek, Inc. Apparatus and method for in-line coating of pultrusion profiles
US6048427A (en) * 1995-06-07 2000-04-11 Owens Corning Fiberglas Technology, Inc. Methods for resin impregnated pultrusion
JPH08339725A (ja) * 1995-06-12 1996-12-24 Mitsubishi Cable Ind Ltd 平形ケ−ブルの製造方法
US8343410B2 (en) 2007-02-24 2013-01-01 Evonik Degussa Gmbh Induction-assisted production method
DE102011005329A1 (de) * 2011-03-10 2012-09-13 Sgl Carbon Se Verfahren und Vorrichtung zur Herstellung eines faserverstärkten Verbundwerkstoffs und insbesondere eines Zugträgers
US9126805B2 (en) 2012-02-13 2015-09-08 Kone Corporation Rope of an elevator and a method for manufacturing the rope
CN104552988A (zh) * 2014-12-30 2015-04-29 天津高盛钢丝绳有限公司 一种超轻质复合材料曳引带的制备方法及制备系统
EP3351362A1 (fr) * 2015-02-13 2018-07-25 Hexcel Composites GmbH & CoKG Appareil de pultrusion
EP3330209A1 (fr) * 2016-12-02 2018-06-06 Otis Elevator Company Éléments de tension non métalliques surtressés
WO2018177803A1 (fr) * 2017-03-31 2018-10-04 Kraussmaffei Technologies Gmbh Boîte d'injection pour une installation de pultrusion pour la fabrication de profilés en matière synthétique renforcés par des fibres, en particulier de barres en matière synthétique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250346454A1 (en) * 2024-05-07 2025-11-13 Otis Elevator Company Twist resistant elevator suspension member

Similar Documents

Publication Publication Date Title
US10882719B2 (en) Composite elevator belt
EP2860141B1 (fr) Câble pour dispositif de levage et ascenseur
US11866300B2 (en) Overbraided non-metallic tension members
EP3492417B1 (fr) Élément de support de charge légère pour système d'ascenseur
EP2125593A1 (fr) Courroie d'ascenseur, procédé de fabrication d'une telle courroie d'ascenseur, et installation d'ascenseur présentant une telle courroie
KR20180067436A (ko) 엘리베이터 시스템용 하이브리드 직물-라미네이트된 벨트
CN108726322A (zh) 用于电梯系统带的张力构件
EP3009390A1 (fr) Procédé de fabrication d'un câble de levage, câble de levage et ascenseur l'utilisant
US20190299553A1 (en) "Apparatus and Method for Making Composite Elevator Belt"
US20210229956A1 (en) Composite elevator belt and method for making the same
WO2020200431A1 (fr) Imprégneur de noyau et procédé de production d'une courroie d'ascenseur composite à l'aide d'un imprégneur d'âme conique
EP1905892B1 (fr) Câble en fibres synthétiques, installation d'ascenseur comportant un tel câble en fibres synthétiques et procédé pour fabriquer un câble en fibres synthétiques
CN112166083B (zh) 复合电梯带和用于制作复合电梯带的方法
CN107108160A (zh) 电梯系统的拉伸构件
US20160201403A1 (en) Composite Sucker Rod Assemblies
WO2020200430A1 (fr) Procédé de fabrication d'une courroie élévatrice composite comprenant une ou plusieurs couches de fibres
US20150284906A1 (en) Method of elevator cord cleaning and heating
KR102886724B1 (ko) 플랫벨트 제조 장치 및 그 제조 방법
HK1100809A (en) Flexible traction organ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19716337

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019716337

Country of ref document: EP

Effective date: 20211102

122 Ep: pct application non-entry in european phase

Ref document number: 19716337

Country of ref document: EP

Kind code of ref document: A1