WO2023224595A1 - Calibreur pour une extrudeuse ayant des canaux de refroidissement et d'aspiration améliorés - Google Patents

Calibreur pour une extrudeuse ayant des canaux de refroidissement et d'aspiration améliorés Download PDF

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Publication number
WO2023224595A1
WO2023224595A1 PCT/US2022/029437 US2022029437W WO2023224595A1 WO 2023224595 A1 WO2023224595 A1 WO 2023224595A1 US 2022029437 W US2022029437 W US 2022029437W WO 2023224595 A1 WO2023224595 A1 WO 2023224595A1
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WO
WIPO (PCT)
Prior art keywords
core
housing
cooling
channel
sizer
Prior art date
Application number
PCT/US2022/029437
Other languages
English (en)
Inventor
Vick Dhanapal
Gary Oney
Roger May
Troy Kimmes
Original Assignee
Engineered Profiles LLC
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 Engineered Profiles LLC filed Critical Engineered Profiles LLC
Priority to PCT/US2022/029437 priority Critical patent/WO2023224595A1/fr
Publication of WO2023224595A1 publication Critical patent/WO2023224595A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/503—Extruder machines or parts thereof characterised by the material or by their manufacturing process
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—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
    • 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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting

Definitions

  • Exemplary embodiments relate generally to sizers for creating extrusion profiles.
  • vacuum channels may be provided above and below the extrudate to maintain the extrudate’s shape as it passes through the extrusion channel. Without the vacuum channels, gravity might cause undesired deformations. However, these vacuum channels create obstacles for cooling channels, which may be required to adequately cool the extrudate. As water flows through the cooling channels, heat may be conductively removed from the extrudate. Ideally, the cooling channels conform to the shape of the extrudate and run along at least a portion of the length of the extrudate channel to maximize cooling efficiency. As both the vacuum and cooling channels require interaction with the extrusion channel, positioning both types of channels in a way which provides sufficient proximity and interaction with the extrudate to achieve both adequate cooling and adequate distribution of material is spatially challenging.
  • the single or multi-piece sizer may begin as a solid piece of metal with the appropriate shaped channels (extrusion, cooling, and vacuum) being removed from the solid piece(s) by subtractive manufacturing.
  • material may be removed from the top and/or bottom pieces which when joined may form the various channels.
  • cooling and vacuum channels are temporarily intersected to create such channels, and must later be filled to create separation between the cooling and vacuum pathways. Further still, such drilling generally results in round channels, which are not always desirable.
  • non-linear pathways may be created. These non-linear pathways may permit cooling and vacuum channels to be provided without intersecting one another. These non-linear pathways may also maximize the efficiency of cooling flow and the transmission of vacuum forces.
  • non-linear cooling channels may be configured to induce turbulence in the cooling fluid and/or may permit the cooling channels or vacuum channels to more closely conform to at least a portion of the extrusion channel.
  • smooth shaped curves and a lack of sharply angled intersections may provide for more even distribution of vacuum forces.
  • the sizer may be formed from a housing and a core.
  • the core may comprise an upper portion and a lower portion, which may be formed separately, though such is not required.
  • the core may comprise any number of pieces.
  • the core may be formed using subtractive manufacturing techniques, such as conventional drilling.
  • the cooling and vacuum channels may be linear, though such is not required.
  • the core may be comprised of a thermally conductive material, such as metal.
  • the core may comprise an extrusion channel as well as one or more cooling and vacuum channels.
  • the housing may comprise an upper portion and a lower portion, which may be formed separately, though such is not required.
  • the housing may comprise any number of pieces.
  • the housing may be comprised of a polymer or other material.
  • the housing may be created by additive manufacturing techniques, such as, but not limited to, 3-D printing.
  • the housing may comprise cooling and vacuum channels.
  • the cooling and vacuum channels may comprise one or more non-linear segments, such as, but not limited to, smooth curves, though such is not required.
  • the cooling and vacuum channels of the housing may be configured to provide fluid communication with the cooling and vacuum channels of the core when the housing is joined to the core.
  • the housing may further comprise one or more cooling inlets and exits for the ingestion and expulsion of cooling fluid.
  • the housing may further comprise one or more vacuum inlets and exits for the ingestion and expulsion of suction forces.
  • the cooling and vacuum channels may be configured to extend through multiple sizers. In such cases, inlets and exits for cooling fluids and suction may not be required on particular sizers.
  • the core may be created through additive manufacturing techniques, such as, but not limited to, 3-D printing.
  • the cooling and vacuum channels may comprise one or more non-linear segments, such as, but not limited to, smooth curves, though such is not required.
  • the cooling and vacuum channels of the housing may be provided to align with the cooling and vacuum channels of the core.
  • cooling and vacuum channels may be formed into various geometric cross sections. Such cross sections may be designed to induce or reduce turbulence of cooling fluid flows or to impact particular suction forces, for example, without limitation.
  • the entire housing and core may be created as a single piece by additive manufacturing.
  • the cooling and vacuum channels of the housing may be provided in one or more standard sizes. This may enable only a new core to be created with the associated housing and vacuum channels instead of creating an entirely new sizer for each individual profile extrusion.
  • the sizer may allow for less material to be used for the core of the sizer, providing faster and cheaper manufacturing turnover. Additionally, the sizer may permit the creation of improved cooling and vacuum channels in more sizer-space than previously capable. The cooling and vacuum channels may be restricted only by the volume of the sizer. Vortexes or other shapes creating still or turbulent flows may be provided as needed to cool the profile.
  • FIGURE 1 illustrates an exploded view of an exemplary embodiment of a sizer
  • FIGURE 2 illustrates a cross-sectional view of the sizer of Figure 1 in an assembled state
  • FIGURE 3 is an exploded view of another exemplary sizer
  • FIGURE 4 is a side view of the sizer of Figure 3 in an assembled state
  • FIGURE 5A is a top view of the assembled sizer of Figure 4.
  • FIGURE 5B is a front view of the assembled sizer of Figure 4.
  • FIGURE 5C is a bottom view of the assembled sizer of Figure 4.
  • FIGURE 6 is a perspective view of a top portion of an exemplary sizer with certain components illustrated in a hidden state to illustrate certain interior components of the sizer;
  • FIGURE 7A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 7B is an opposite side view of the sizer of Figure 7A in an assembled state, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 7C is a cross-sectional view of the sizer of Figure 7B along section line A-A;
  • FIGURE 7D is a cross-sectional view of the sizer of Figure 7B along section line B-B;
  • FIGURE 8A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 8B is an exploded view from an opposite side of the sizer of Figure
  • FIGURE 8C is a side view of the sizer of Figure 8B in an assembled state, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 8D is a cross-sectional view of the sizer of Figure 8C along section line A-A;
  • FIGURE 8E is a cross-sectional view of the sizer of Figure 8C along section line B-B;
  • FIGURE 9A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 9B is an exploded view from an opposite side of the sizer of Figure
  • FIGURE 9C is a side view of the sizer of Figure 9B in an assembled state, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 9D is a cross-sectional view of the sizer of Figure 9C along section line A-A;
  • FIGURE 9E is a cross-sectional view of the sizer of Figure 9C along section line B-B;
  • FIGURE 10A is a side view of an exemplary embodiment of a sizer, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 10B is a top plan view of the sizer of Figure 10A, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 10C is a cross-sectional view of the sizer of Figure 10A;
  • FIGURE 11 A is a side view of an exemplary embodiment of a sizer, wherein certain interior or otherwise not visible features in this view are illustrated in a hidden state;
  • FIGURE 11 B is a cross-sectional view of the sizer of Figure 11 A along section line A-A;
  • FIGURE 11 C is a cross-sectional view of the sizer of Figure 11 A along section line B-B;
  • FIGURE 12A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 12B is an exploded view from an opposite side of the sizer of Figure
  • FIGURE 13A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 13B is an exploded view from an opposite side of the sizer of Figure
  • FIGURE 14A is an exploded view of an exemplary embodiment of a sizer
  • FIGURE 14B is an exploded view from a top side of the sizer of Figure 14A.
  • FIGURE 14C is a cross-section view of the sizer of Figure 14B along section line A-A.
  • Embodiments of the invention are described herein with reference to illustrations of idealized embodiments (and intermediate structures) of the invention. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing.
  • FIGURE 1 and FIGURE 2 illustrate an exemplary sizer 100.
  • the sizer 100 may comprise a housing 102 and a core 104.
  • the core 104 may comprise an extrusion channel 126.
  • the extrusion channel 126 may be configured to accommodate the extrudate.
  • the housing 102 may comprise an upper portion 1 10 and a lower portion 1 12.
  • the housing 102 may comprise any number of pieces.
  • the housing 102 may be formed by joining multiple pieces, at least some of which fit into the side of the sizer 100 as inserts.
  • the upper portion 110 and the lower portion 1 12 may be separately formed, though such is not required.
  • the housing 102 may be created through additive manufacturing techniques, such as, but not limited to, 3-D printing.
  • the housing 102 may be comprised of a polymer, metal, composite, or other material.
  • the housing 102 may comprise one or more cooling channels 106.
  • one or more of the cooling channels 106 may comprise one or more non-linear segments. Such non-linear segments may include, for example, without limitation, curves, corkscrews, rounded bends, U-shaped turns, sinuous passageways, S-curves, some combination thereof, or the like.
  • the cooling channels 106 may be configured to extend in proximity to the extrusion channel 126. In exemplary embodiments, the cooling channels 106 may extend along some or all of the extrusion channel 126.
  • the cooling channels 106 may be configured to increase or reduce turbulence as required to provide adequate cooling.
  • curves, corkscrews, rounded bends, U-shaped turns, sinuous passageways, S-curves, some combination thereof, or the like may be provided to induce turbulence.
  • smooth turns and relatively straight passageways may be provided to reduce turbulence and increase flow rate.
  • the housing 102 may comprise one or more vacuum channels 108.
  • the vacuum channels 108 may comprise one or more non-linear segments. Such non-linear segments may comprise, for example, without limitation, curves, corkscrews, rounded bends, U-shaped turns, sinuous passageways, S-curves, some combination thereof, or the like.
  • the cooling channels 106 and/or the vacuum channels 108 may be configured to avoid one another.
  • the cooling channels 106 and/or the vacuum channels 108 may not intersect one another. In exemplary embodiments, such cooling channels 106 and vacuum channels 108 are provided in both the upper portion 1 10 and lower portion 1 12 of the housing, though such is not required.
  • One or more alignment devices 1 14 may be provided in the housing 102.
  • one or more alignment channels are provided in the upper portion 110 of the housing 102 and one or more corresponding alignment protrusions are provided in the lower portion 1 12 of the housing 102, though the reverse is contemplated.
  • the alignment protrusions may be configured to be mated with the alignment channels.
  • the alignment devices 1 14 may comprise channels and a rod, clamp, fastener or other device may be inserted through the alignment channels.
  • One or more cooling inlets 1 16 may be provided in the housing 102.
  • One or more cooling outlets 1 18 may be provided in the housing 102. It is contemplated that such cooling inlets 1 16 and/or outlets 1 18 may be provided in the upper portion 110 and/or the lower portion 1 12.
  • One or more vacuum inlets 140 may be provided in the housing 102. It is contemplated that such vacuum inlets 140 may be provided in the upper portion 1 10 and/or the lower portion 1 12 of the housing 102.
  • the cooling channels 106 and/or the vacuum channels 108 may be configured to interact with the cooling channels 106 and/or the vacuum channels 108 of an adjacent sizer 102; in such cases, the cooling inlets 1 16 and outlets 1 18 and/or the vacuum inlets 140 may not be required.
  • the cooling inlets 1 16 and outlets 1 18 and/or the vacuum inlets 140 may be provided in an outer surface of the housing 102.
  • the cooling inlets 1 16 and outlets 1 18 may be placed in fluid communication with the cooling channels 106.
  • the vacuum inlets 140 may be placed in fluid communication with the vacuum channels 108.
  • the cooling channels 106 may be configured to accommodate a coolant, such as, but not limited to, water.
  • the cooling channels 106 may be configured to provide conductive thermal heat transfer between the relatively warm extrudate in the extrusion channel 126 and the coolant in the cooling channels 106.
  • the cooling inlet(s) 1 16 may be placed in fluid communication with a reservoir, pump, tubing, piping, some combination thereof, or the like which transports coolant to the cooling inlet(s) 1 16 for passage through the cooling channels 106 and to the cooling outlet(s) 1 18 to exit the sizer 100.
  • the cooling outlet(s) 1 18 may be placed in fluid communication with a container, drain, pump, tubing, piping, some combination thereof, or the like for removing the coolant from the sizer 100.
  • the vacuum channels 108 may be in fluid communication with the extrusion channel 126.
  • the vacuum channels 108 may be configured to facilitate the transmission of suction forces to the extrudate located in the extrusion channel 126.
  • the vacuum channels 108 may be configured to provide suction forces which provide desirable distribution of extrudate material within the extrusion channel 126.
  • the vacuum inlet(s) 140 may be placed in fluid communication with a pump, tubing, piping, some combination thereof, or the like which transports suction forces to the extrusion channel 126.
  • the housing 102 may be configured to accommodate a core 104.
  • the core 104 may be comprised of a metal such as, but not limited to, steel, aluminum, stainless steel, another thermally conductive material, or some combination thereof.
  • the core 104 may be comprised of a non-metallic, thermally conductive material such as a polymer, composite, or the like.
  • the core 104 may be created using subtractive manufacturing techniques such as, but not limited to, drilling, wire EDM, some combination thereof, or the like. In such cases, at least portions of the cooling channels 106 in the core 104 may comprise one or more linear cooling segments 106B.
  • the linear cooling segments 106B extend along some or all of the extrusion channel 126.
  • the vacuum channels 108 in the core 104 may comprise one or more linear cooling channels 108B.
  • the linear vacuum channels 108B may extend through some or all of the core 104.
  • all of the cooling channels 106 in the core 104 may comprise linear cooling segments 106B and all of the vacuum channels 108 in the core 104 may comprise linear vacuum segments 108B.
  • One or more gaps 132 may be formed into the core 104 to accommodate subtractive manufacturing of the cooling channels 106 and/or the vacuum channels 108.
  • One or more inserts 130 may be provided for placement in the gaps 132 to block passage of coolant or suction therebeyond.
  • Such gaps 132 may be provided to facilitate subtractive manufacturing of the cooling channels 106 and/or the vacuum channels 108, such as by driller.
  • Such gaps 132 may be portions of the cooling channels 106 and/or the vacuum channels 108 which are subsequently blocked or plugged.
  • the core 104 may comprise an upper portion 122 and a lower portion 128.
  • the core 104 may comprise any number of pieces.
  • the core 104 may be formed by joining multiple pieces, at least some of which fit into the side of the sizer 100 as inserts.
  • the upper portion 122 and lower portion 128 of the core 104 may be configured to fit together. When joined, the upper portion 122 and the lower portion 128 may form the extrusion channel 126, the linear cooling channels 106B, and the linear vacuum channels 108B.
  • the upper portion 110 and the lower portion 112 of the housing 102 may be configured to fit together. When joined, the upper portion 110 and the lower portion 112 may form the cooling channels 106 and the vacuum channels 108.
  • the core 104 may comprise non-linear cooling channels 106.
  • the core 104 may comprise non-linear vacuum channels 108.
  • the core 104 may be made by additive manufacturing, such as, but not limited to, 3-D printing. Such embodiments may eliminate the need for gaps 132 and inserts 130, though such is not required.
  • the cooling channels 106 in the core 104 may closely conform to at least a portion of the shape of the extrusion channel 126.
  • the vacuum channels 108 may closely confirm to the shape of the extrusion channel 126.
  • the cooling channels 106 and the vacuum channels 108 may be located between 1/1 ,000 th inch to 2 inches of the extrusion channel 126.
  • the cooling channels 106 and/or the vacuum channels 108 may be provided with various geometric cross sections, such as, but not limited to, circles, squares, stars, ovals, rectangles, some combination thereof, or the like. While FIGURE 6 is illustrated with respect to the upper portion 110 of the housing 102, it is contemplated that such various geometric cross sections may be utilized with any portion of the housing 102 and/or the core 104.
  • the design, shape, and placement of cooling channels 106 and vacuum channels 108 as well as the cooling inlets 1 16, cooling outlets 1 18, and vacuum inlets 140 are each exemplary and are not intended to be limiting. Any design, shape, and placement of such cooling channels 106, vacuum channels 108, cooling inlets 1 16, cooling outlets 118, and vacuum inlets 140 are contemplated.
  • the alignment device 1 14 may comprise a number of threaded and/or non-threaded holes and fasteners.
  • the holes may be provided on the upper portion 1 10 and/or lower portion 1 12 of the housing 102 as well as the upper portion 122 and/or lower portion 128 of the core 104.
  • the holes may be configured to accommodate one or more fasteners for securing such parts to one another.
  • wire EDM or another subtractive manufacturing technique may be utilized to provide a finished surface. While discussed with respect to cooling channels 106 and vacuum channels 108, it is contemplated that channels for other purposes may be so utilized.
  • One or more handles may be provided on the upper portion 1 10 and/or lower portion 1 12 of the housing 102 as well as the upper portion 122 and/or lower portion 128 of the core 104. Various portions of the upper portion 1 10 and/or lower portion 1 12 of the housing 102 as well as the upper portion 122 and/or lower portion 128 of the core 104 may be removed to reduce weight.
  • the profile of the illustrated extrusion channel 126 is merely exemplary and is not intended to be limiting. Any size, shape, or configuration of the extrusion channel 126 to create any size, shape, or configuration extrudate is contemplated.
  • the core and/or the housing may be comprised of any number of pieces that are joined together.
  • at least one of an upper core portion and a lower core portion may be respectively formed of multiple pieces that are joined together.
  • an upper core portion may be comprised of multiple pieces that are joined together while the lower core portion is comprised of a single piece, or vice versa.
  • an exemplary embodiment may comprise at least one of an upper housing portion and a lower housing portion that is respectively formed of multiple pieces that are joined together.
  • an upper housing portion may be comprised of multiple pieces that are joined together while the lower housing portion is comprised of a single piece, or vice versa.
  • FIGURES 7A - 13B show various embodiments of sizers respectively comprising at least one housing portion and at least one core portion.
  • FIGURES 7A - 13B show various embodiments of sizers respectively comprising at least one housing portion and at least one core portion.
  • only a lower housing portion and lower core portion are shown for ease of reference, wherein the lower housing portion and the lower core portion are configured to be associated with an upper housing portion and an upper core portion such as previously discussed.
  • Other exemplary embodiments may comprise one housing portion and one core portion.
  • the entire housing and core may be created as a single piece.
  • a core and a housing may be created by being printed together by additive manufacturing (e.g., 3-D printing).
  • any suitable manufacturing techniques may be used to create any number of pieces of a housing and a core.
  • the examples shown in FIGURES 7A - 13B may benefit from any of the features of the other embodiments of this application. Likewise, those other exemplary embodiments may benefit from any of the features described with respect to FIGURES 7A - 13B.
  • Exemplary embodiments may also control the cooling of an extrudate by the position or other characteristics of the at least one cooling channel.
  • FIGURES 7A - 7D show one example of a sizer 200 having cooling channels that are adapted to facilitate control of the cooling of an extrudate and/or to adapt to space limitations within a housing.
  • Sizer 200 is comprised of a core 210 that is positioned in a housing 220.
  • Core 210 comprises an extrusion channel 212 that is adapted to accommodate an extrudate.
  • Housing 220 has at least one input (labeled Cl) and at least one output (labeled CO) for the coolant, and at least one inlet (labeled V, which is not visible in FIGURE 7A) adapted to receive the suction force of a vacuum (i.e., adapted to be in fluid communication with a vacuum source).
  • the at least one inlet for a vacuum is associated with a vacuum channel 230 that extends through the core 210 and housing 220.
  • this exemplary embodiment has a cooling channel 240 and a cooling channel 250, which each respectively extend through core 210 and housing 220.
  • cooling channel 240 has portion 242, portion 244, and portion 246 adjacent to the extrusion channel 212
  • cooling channel 250 has portion 252, portion 254, and portion 256 adjacent to the extrusion channel 212.
  • portion 246 is larger (i.e., more volume as determined when there is a cross-section across the width of the extrusion channel 212) than portions 242 and 244 to facilitate the receipt of more coolant in that area for better cooling of an extrudate in that area (compared to portions 242 and 244, which are adapted to receive less coolant, respectively, for less cooling impact in those areas).
  • portion 256 is larger than portions 252 and 254 to facilitate the receipt of more coolant in that area for better cooling of an extrudate in that area.
  • Such an example may be useful for cooling an extrudate that has different thicknesses or materials in certain areas (e.g., next to portions 246 and 256 in this example) that require different cooling.
  • space may be limited for some portions of a cooling channel, which may require a relatively small cooling portion in that area (e.g., around cooling portion 242 in this example).
  • Other exemplary embodiments may have a different number, size characteristics, and/or placement of the portions of a cooling channel adjacent to an extrusion channel to facilitate desired control of the cooling of an extrudate.
  • Exemplary embodiments may also control the cooling of an extrudate by the thickness of a core between a cooling channel and an extrusion channel.
  • FIGURES 8A - 8E show one example of a sizer 300 having different thicknesses of a core between a cooling channel and an extrusion channel to facilitate control of the cooling of an extrudate.
  • Sizer 300 is comprised of a core 310 that is positioned in a housing 320.
  • Core 310 comprises an extrusion channel 312 that is adapted to accommodate an extrudate.
  • Housing 320 has at least one input (labeled Cl) and at least one output (labeled CO) for the coolant, and at least one inlet (labeled V) adapted to receive the suction force of a vacuum (i.e., adapted to be in fluid communication with a vacuum source).
  • the at least one inlet for a vacuum is associated with a vacuum channel 330 that extends through the core 310 and housing 320.
  • this exemplary embodiment has a cooling channel 340, which extends through core 310 and housing 320 and about extrusion channel 312. [0076]
  • cooling channel 340 has portion 342, portion 344, and portion 346 adjacent to the extrusion channel 312.
  • a portion 314 of the core is thicker between the extrusion channel 312 and cooling channel 340 to lessen the cooling effect in that area (compared to portions 316 and 318, which are thinner, respectively, for less cooling impact).
  • portion 314 is thicker relative to only a portion of portion 344 of cooling channel 340.
  • a thicker portion may be situated elsewhere with respect to at least one portion of a cooling channel. Such an example may be useful for cooling an extrudate more slowly where the core is thickest between an extrusion channel and a cooling channel. This exemplary embodiment may be beneficial for an extrudate that has different thicknesses or materials in certain areas that require different cooling.
  • exemplary embodiments may have a different number, size characteristics (e.g., wavy thickness changes, multiple thickness changes, etc.), and/or placement of at least one portion of a core that is thicker (compared to other portions) between at least one cooling channel and an extrusion channel to facilitate desired control of the cooling of an extrudate.
  • size characteristics e.g., wavy thickness changes, multiple thickness changes, etc.
  • FIGURES 9A - 9E show one example of a sizer 400 adapted to facilitate control of the coolant velocity.
  • Sizer 400 is comprised of a core 410 that is positioned in a housing 420.
  • Core 410 comprises an extrusion channel 412 that is adapted to accommodate an extrudate.
  • Housing 420 has at least one input (labeled Cl) and at least one output (labeled CO) for the coolant, and at least one inlet (labeled V) adapted to receive the suction force of a vacuum (i.e., adapted to be in fluid communication with a vacuum source).
  • the at least one inlet for a vacuum is associated with a vacuum channel 430 that extends through the core 410 and housing 420.
  • this exemplary embodiment has a cooling channel 440 and a cooling channel 450, each of which extends through core 410 and housing 420.
  • cooling channel 440 has portion 442, portion 444, and portion 446 adjacent to the extrusion channel 412
  • cooling channel 450 has portion 452, portion 454, and portion 456 adjacent to the extrusion channel 412.
  • portions 442, 444, and 446 have respective sizes adapted to facilitate control of cooling by promoting more balanced cooling velocity in each of the portions as compared to an otherwise similar core cooling channel in which none of the portions differ in size.
  • portion 446 is larger than portion 444, which is larger than 442, in order to facilitate more balanced cooling velocity in each of the portions.
  • portion 456 is larger than portions 452 and 454 in this embodiment to facilitate more balanced cooling velocity in those portions.
  • Such an example may be useful such as when the shapes of a core and/or a housing require or result in a cooling channel that would otherwise promote unbalanced cooling velocities in the respective portions of the cooling channel.
  • the respective shapes of the portions of a cooling channel adjacent to an extrusion channel may influence the cooling velocity in each channel.
  • More balanced cooling velocity may be particularly useful such as when an extrudate has a similar thickness throughout to facilitate more uniform cooling.
  • Other exemplary embodiments may have a different number, size characteristics, and/or placement of the portions of a cooling channel adjacent to an extrusion channel to facilitate more balanced cooling velocity control.
  • FIGURES 10A - 10C show an example of a sizer that is adapted to facilitate heat transfer.
  • sizer 500 is comprised of a core 510 that is positioned in a housing 520.
  • At least one vacuum channel 530 extends through the core 510 and housing 520.
  • Vortex cooling channel 540 is in fluid communication with a coolant supply 542 and a coolant outlet 544, each of which may extend through the core 510 and housing 520.
  • vortex cooling channel 550 is in fluid communication with a coolant supply 552 and a coolant outlet 554, each of which may extend through the core 510 and housing 520.
  • vortex cooling channel 540 is positioned in housing 520 along one side of the core 510
  • vortex cooling channel 550 is positioned in housing 520 along an opposite side of core 510.
  • a vortex cooling channel (and any associated supplies and outlets) may have any other suitable placement to facilitate desired cooling control.
  • any of the exemplary embodiments may include at least one cooling channel that is continuous or non-continuous adjacent to at least a portion of the width of an extrusion channel (as determined when there is a theoretical cross-section along the width of the extrusion channel). Certain embodiments may benefit from being continuous or non-continuous adjacent to the width of an extrusion channel.
  • FIGURES 11 A - 11C show one example of a sizer 600 having cooling channels that are adapted to facilitate control of the cooling of an extrudate and/or to adapt to space limitations within a housing. Sizer 600 is comprised of a core 610 that is positioned in a housing 620. Core 610 comprises an extrusion channel 612 that is adapted to accommodate an extrudate.
  • Housing 620 may have at least one input and at least one output for the coolant, and at least one inlet adapted to receive the suction force of a vacuum (i.e., adapted to be in fluid communication with a vacuum source).
  • the at least one inlet for a vacuum is associated with a vacuum channel 630 that extends through the core 610 and housing 620.
  • this exemplary embodiment has a cooling channel 640 and a cooling channel 650, which each respectively extend through core 610 and housing 620.
  • cooling channel 640 has portion 642, portion 644, and portion 646 adjacent to the extrusion channel 612
  • cooling channel 650 has portion 652, portion 654, and portion 656 adjacent to the extrusion channel 612.
  • portions 642, 644, and 646 respectively form individual cooling portions that are positioned adjacent to the extrusion channel.
  • portions 652, 654, and 656 respectively form individual cooling portions that are positioned adjacent to the extrusion channel.
  • “Individual cooling portions” is not intended to preclude the portions from being joined at their proximal ends, again such as shown in the example of FIGURE 11 B.
  • portions 642, 644, 646, 652, 654, and 656 are positioned substantially about an entirety of the width of the extrusion channel.
  • Other exemplary embodiments may have a cooling channel that is continuous adjacent to at least a major portion of a width of extrusion channel, such as shown in the example of FIGURE 8D. In this instance, a major portion is defined to be at least half of the width of the extrusion channel, and is determined when there is a theoretical cross-section along the width of the extrusion channel.
  • Other exemplary embodiments may have a different number, size characteristics, and/or placement of the at least one portion of at least one cooling channel adjacent to an extrusion channel to facilitate desired control of the cooling of an extrudate.
  • a housing cooling channel and a core cooling channel may be adapted to circulate any suitable coolant for an application.
  • suitable coolants may comprise liquids and gases, or other suitable materials, which may be natural or synthetic.
  • Exemplary embodiments may also include a seal that is adapted to limit leakage of the coolant between a core and a housing.
  • FIGURES 12A and 12B show one example of the use of a conformal seal.
  • sizer 700 comprises a core 710 that is positioned in a housing 720. Core 710 and housing 720 may be similar to, or different than, other cores and housings discussed herein. However, in this exemplary embodiment, sizer 700 further comprises a conformal seal 730 positioned between core 710 and housing 720, which is adapted to limit leakage of the coolant between the core 710 and housing 720.
  • Other exemplary embodiments may have a seal that is not conformal.
  • examples of a seal may be selected from a group consisting of O-rings, printed seals, continuous cut seals, and overmolded seals, or other suitable types of seals, which may or may not be conformal.
  • An example of a seal may be comprised of a rigid or flexible material, such as, but not limited to, plastics.
  • a seal may be integrated in a housing, such as, but not limited to, an overmolded seal.
  • FIGURES 13A - 13B show an example of an overmolded seal.
  • sizer 800 comprises a core 810 and a housing 820, which may be similar to, or different than, other cores and housings discussed herein.
  • conformal seal 830 is overmolded with housing 820 in an additive manufacturing process (e.g., 3-D printing).
  • a seal may be overmolded with a core.
  • FIGURES 14A - 14C show one example of the use of a seal that may be injected into a housing and/or a core.
  • sizer 900 comprises a core 910 that is positioned in a housing 920.
  • Core 910 and housing 920 may be similar to, or different than, other cores and housings discussed herein.
  • the housing 920 comprises at least one groove 922 on a surface 924 that is adjacent to the core 910.
  • a seal 926 is positioned in the at least one groove 922 such that the seal 926 is positioned between core 910 and housing 920.
  • seal 926 is adapted to limit leakage of a coolant between the core 910 and housing 920.
  • a seal 926 may be manufactured prior to, simultaneously with (e.g., 3-D printing), or otherwise separately from (e.g., after) at least one groove 922.
  • seal 926 is formed by injection into at least one groove 922.
  • housing 920 comprises at least one seal injection port 928 that is adapted to facilitate injection of a sealant material into the at least one groove 922 to form the seal 926.
  • the sealant material may be comprised of a rigid or flexible material that is injectable, such as, but not limited to, plastics.
  • seal injection port 928 is in fluid communication with a sealant channel 930 that is configured to inject the sealant material into at least one groove 922.
  • At least one groove 922 is comprised of a seal runner 932 and a seal runner 934, which are interconnected in this example.
  • seal runners may not be interconnected.
  • seal runner 932 may comprise at least one sealant vent 932A
  • seal runner 934 may comprise at least one sealant vent 934A.
  • a core may comprise at least one groove on a surface that is adjacent to a housing.
  • a seal may be positioned in the at least one groove such that the seal is positioned between the core and the housing.
  • This example may otherwise be similar to the example in FIGURES 14A - 14C to limit leakage of a coolant between a core and a housing.
  • any embodiment of the present invention may include any of the features of the other embodiments of the present invention.
  • the exemplary embodiments herein disclosed are not intended to be exhaustive or to unnecessarily limit the scope of the invention.
  • the exemplary embodiments were chosen and described in order to explain the principles of the present invention so that others skilled in the art may practice the invention. Having shown and described exemplary embodiments of the present invention, those skilled in the art will realize that many variations and modifications may be made to the described invention. Many of those variations and modifications will provide the same result and fall within the spirit of the claimed invention. It is the intention, therefore, to limit the invention only as indicated by the scope of the claims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un calibreur pour refroidir un extrudat, qui comprend un noyau et un boîtier. Le noyau comprend un canal d'extrusion qui reçoit l'extrudat, un canal de refroidissement de noyau et un canal d'aspiration de noyau en communication fluidique avec le canal d'extrusion. Le boîtier comprend un canal de refroidissement de boîtier et un canal d'aspiration de boîtier. Le canal de refroidissement de noyau est en communication fluidique avec le canal de refroidissement de boîtier, et le canal d'aspiration de noyau est en communication fluidique avec le canal d'aspiration de boîtier.
PCT/US2022/029437 2022-05-16 2022-05-16 Calibreur pour une extrudeuse ayant des canaux de refroidissement et d'aspiration améliorés WO2023224595A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804567A (en) * 1970-04-06 1974-04-16 Chevron Res Apparatus for cooling and sizing hot thermoplastic extrudates
US20010043963A1 (en) * 2000-05-08 2001-11-22 Ming Zhang Plastic tandem extrusion sizer mold and the manufacture method thereof
US6394782B1 (en) * 1999-10-29 2002-05-28 Alloy & Cooper International Inc. Modular apparatus for cooling and vacuum sizing an extruded plastic profile
US20200079002A1 (en) * 2018-09-11 2020-03-12 Engineered Profiles LLC Sizer for an extrusion machine with improved cooling and vacuum channels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804567A (en) * 1970-04-06 1974-04-16 Chevron Res Apparatus for cooling and sizing hot thermoplastic extrudates
US6394782B1 (en) * 1999-10-29 2002-05-28 Alloy & Cooper International Inc. Modular apparatus for cooling and vacuum sizing an extruded plastic profile
US20010043963A1 (en) * 2000-05-08 2001-11-22 Ming Zhang Plastic tandem extrusion sizer mold and the manufacture method thereof
US20200079002A1 (en) * 2018-09-11 2020-03-12 Engineered Profiles LLC Sizer for an extrusion machine with improved cooling and vacuum channels

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