WO2021206224A1 - Appareil de fabrication de film de formage 3d apte à réguler la température - Google Patents

Appareil de fabrication de film de formage 3d apte à réguler la température Download PDF

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Publication number
WO2021206224A1
WO2021206224A1 PCT/KR2020/009717 KR2020009717W WO2021206224A1 WO 2021206224 A1 WO2021206224 A1 WO 2021206224A1 KR 2020009717 W KR2020009717 W KR 2020009717W WO 2021206224 A1 WO2021206224 A1 WO 2021206224A1
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WIPO (PCT)
Prior art keywords
forming film
mold
unit
coupled
press
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PCT/KR2020/009717
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English (en)
Korean (ko)
Inventor
임남일
Original Assignee
리얼룩앤컴퍼니 주식회사
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Publication of WO2021206224A1 publication Critical patent/WO2021206224A1/fr

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    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—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
    • 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
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/28—Component parts, details or accessories; Auxiliary operations for applying pressure through the wall of an inflated bag or diaphragm
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/34—Moulds for undercut 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/428—Heating or cooling of moulds or mould parts
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs

Definitions

  • the present invention relates to an apparatus for manufacturing a 3D forming film capable of temperature control, and more particularly, to a technology for increasing the forming efficiency of a forming film by enabling temperature control for each part of the forming film.
  • films made of tempered glass or various polymer materials are used on the front and back surfaces.
  • processing or molding is performed so that a curvature or a certain inclination is provided for all or a part of the material.
  • films for smart devices will be produced in which various curvatures and shapes are applied in combination for each part of the film, further from the same curvature shape to the left, right, top, bottom, left, and right, which occupies most of the current film design for smart devices. .
  • each polymer material has Tg (vitrification temperature) and Tm (melting temperature), which are the temperatures at which molecules start to move with activity depending on the temperature. temperature) is sequentially reached, and using this, the temperature of the film is made to reach between the Tg (vitrification temperature) and Tm (melting temperature) of each polymer material, and after molding, the process is again lowered below the Tg (vitrification temperature).
  • Tg vitrification temperature
  • Tm melting temperature
  • a forming unit having a mold for forming into a predetermined shape by thermally pressing a film, and the mold during the pressing operation of the forming unit Including an air unit for supplying air to the air, wherein the forming unit comprises a film stack unit on which a plurality of films are stacked, a film separation unit for extracting a sheet of film from the film stack unit, and a forming unit for the separated film.
  • It includes a film supply unit for moving to a film supply unit and a film discharge unit for discharging the formed film to the outside from the forming unit, further comprising a film conveying unit operated by a compressor, wherein the air unit is from the compressor of the film conveying unit.
  • a forming machine receiving air is disclosed.
  • An object of the present invention for solving the above problems is to enable molding of the undercut portion, which is not easy to implement by the molding method of the prior art.
  • an object of the present invention is to prevent thermal wrinkles on the curved surface of the forming film.
  • an object of the present invention is to prevent the whitening phenomenon due to stretching of the forming film during molding for the forming film.
  • an object of the present invention is to enable molding of a forming film formed in a complex manner due to a different shape, thickness, or material for each part.
  • an object of the present invention is to enable temperature control for each part of the forming film.
  • the configuration of the present invention for achieving the above object is a mold part for molding a forming film; a press part positioned to correspond to the mold part and having a variable distance from the mold part; And coupled to the press unit, the volume is variable as the fluid inflow and outflow by the press unit is provided with elasticity, and by changing the volume to contact the forming film located in the mold unit and pressurize the forming film, a volume-variable body that allows the forming film to be molded into a 3D shape; a peripheral heating unit coupled to the press unit and disposed along the circumferential direction of the volume-variable body to transfer heat to the forming film; and a control unit connected to the peripheral heating unit to control the peripheral heating unit.
  • the peripheral heating unit is formed in plurality, and may perform radiant heat transfer toward the forming film.
  • the amount of heat transferred to each part of the forming film may be separately controlled.
  • the peripheral heating unit the peripheral heating element coupled to the press unit and performing an axial rotational movement, and a peripheral heating element coupled to the support actuator and transferring radiant heat to the forming film, can be provided
  • the mold part is used for molding a forming film, a mold having a curved surface on the upper edge, a bottom wall coupled with the bottom surface of the mold to support the mold, and the bottom wall
  • a housing formed along the circumferential direction and spaced apart from the mold and having a side wall formed in a shape surrounding the side surface of the mold, disposed along the circumferential direction of the inner surface of the side wall of the housing and coupled to the housing, , a plurality of side heating elements for transferring heat to the mold, and a plurality of first lower heating elements coupled to the bottom wall of the housing and arranged to be in contact with the bottom surface of the mold to transfer heat to the mold can be provided
  • control unit controlling each of the plurality of side heating elements and controlling each of the plurality of first lower heating elements, the amount of heat transferred to each part of the forming film can be separately controlled. have.
  • one side heating element selected from among the plurality of side heating elements performs convective heat transfer and the other side heating element performs radiative heat transfer, so that each heat transfer method of the plurality of side heating elements These can be formed differently.
  • the mold part is coupled to the bottom wall of the housing, and is disposed along the circumferential direction of the mold, and a second lower heating element for performing convection or radiation heat transfer around the mold is further provided.
  • the press unit includes a press frame, a vertical moving body coupled to the press frame and performing vertical linear motion, a press motor coupled to the vertical moving body, and one end is coupled to the press motor and the other end is A screw shaft coupled to the upper portion of the fluid controller and screwed to the press frame to perform rotational and vertical linear motion, and a press head having an upper portion coupled to the fluid controller and a lower portion coupled to the volumetric body can be provided.
  • the press unit may further include a fluid controller that introduces a fluid received from the outside into the volume-variable body or flows out a fluid within the volume-variable body.
  • the effect of the present invention according to the above configuration is that it is possible to easily form a forming film suitable for a 3D shape having various curved shapes by using a mold in which the springback value is offset according to the physical properties of the forming film.
  • an effect of the present invention is that by performing molding with a uniform pressure using a volume-variable body, it is possible to mold the undercut region.
  • the effect of the present invention is that thermal wrinkles can be prevented, such as on the curved surface of the forming film.
  • the effect of the present invention by reducing the thickness variation of the forming film, to improve the quality of the forming film after molding.
  • the effect of the present invention is to prevent distortion of the forming film, to exclude an additional cutting process after molding, and to exclude pinholes formed in the film for fixing the film, thereby reducing the defect rate and improving productivity.
  • the effect of the present invention since it is possible to adjust the appropriate temperature, pressure, time, etc. during molding by the volume-variable body, when molding the forming film, it is possible to prevent the whitening phenomenon due to stretching of the forming film.
  • the effect of the present invention is that it is possible to apply different heating temperatures or different heating times for each part of the forming film, so even if the shape, thickness or material is different for each part in the forming film, heating is performed suitable for each part That is, molding can be performed on the post-forming film.
  • FIG. 1 is a front view of an apparatus for manufacturing a forming film according to an embodiment of the present invention.
  • FIG. 2 is a plan view and a side view of an apparatus for manufacturing a forming film according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a peripheral heating unit, a volume-variable body, and a mold according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of a mold part according to a first embodiment of the present invention.
  • FIG. 5 is a plan view of a mold part according to a first embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a mold part according to a first embodiment of the present invention.
  • FIG. 7 is a plan view of a portion of the mold part according to the first embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of the formation of a reflector according to each embodiment of the present invention.
  • FIGS. 9 and 10 are perspective views of a mold part according to a second embodiment of the present invention.
  • 11 and 12 are perspective views of a mold part according to a third embodiment of the present invention.
  • a most preferred embodiment according to the present invention a mold part for molding a forming film; a press part positioned to correspond to the mold part and having a variable distance from the mold part; And coupled to the press unit, the volume is variable as the fluid inflow and outflow by the press unit is provided with elasticity, and by changing the volume to contact the forming film located in the mold unit and pressurize the forming film, a volume-variable body that allows the forming film to be molded into a 3D shape; a peripheral heating unit coupled to the press unit and disposed along the circumferential direction of the volume-variable body to transfer heat to the forming film; and a control unit connected to the peripheral heating unit to control the peripheral heating unit.
  • FIG. 1 is a front view of an apparatus for manufacturing a forming film according to an embodiment of the present invention
  • FIG. 2 is a plan view and a side view of an apparatus for manufacturing a forming film according to an embodiment of the present invention.
  • Figure 2 (a) is a plan view of the forming film manufacturing apparatus of the present invention
  • Figure 2 (b) is a side view of the forming film manufacturing apparatus of the present invention.
  • FIG. 3 is a cross-sectional view of the peripheral heating unit 100, the volume-variable body 410, and the mold 210 according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along the line a-a' in FIG. 2B.
  • the forming film manufacturing apparatus of the present invention includes a mold part 200 for molding the forming film 10; a press unit positioned to correspond to the mold unit 200 and having a variable distance from the mold unit 200; and the press unit, and has elasticity so that the volume is changed by the inflow and outflow of the fluid by the press unit, and the volume is changed to contact the forming film 10 located in the mold unit 200 and press the forming film 10
  • a volume-variable body 410 so that the forming film 10 is molded into a 3D shape
  • a peripheral heating unit 100 coupled to the press unit, disposed along the circumferential direction of the volume-variable body 410 to transfer heat to the forming film 10; and a control unit connected to the peripheral heating unit 100 to control the peripheral heating unit 100 .
  • the forming film 10 positioned on the mold 210 and the volumetric body 410 come into contact with the volume changeable body 410 according to the volume change of the volumetric body 410 , and the volumetric body 410 pressurizes the forming film 10 .
  • the forming film 10 may be molded into a 3D shape.
  • a flat film flat plate form
  • press devices for processing such a flat film have been formed by applying pressure in only one direction.
  • the pressing surface of the press apparatus is moved only in the vertical or left and right straight directions, it is impossible to press the curved surface, there is a problem that a 3D-shaped film cannot be formed.
  • a separate volumetric body 410 is additionally attached to the end of the press head 510 in contact with the mold 210 , and the fluid is introduced into the volume variable body 410 .
  • the inflow or outflow it is possible to manufacture a flat film by pressing the flat top of the mold like a conventional press device, as well as a volume-variable body 410 outside the mold 210 in the form of a bent end. It has the characteristic of being able to press the 3D forming film with the bent end by pressing.
  • the forming film manufacturing apparatus of the present invention has the advantage that it can be freely used regardless of the target product or the mold 210 .
  • the press unit includes a press frame 560, a press frame 560 coupled with the press frame 560, a vertical moving body 540 that performs vertical linear motion, a press motor 550 coupled with the vertical moving body 540, and one end of the press motor 550 ) and the other end is coupled with the upper part of the fluid controller 520, and is screwed with the press frame 560, the screw shaft 530 performing rotational and vertical linear motion, and the upper part is the fluid controller 520 It may be provided with a press head 510 coupled to the lower portion and the volume-variable body 410 and coupled. In addition, the press unit may further include a fluid controller 520 that introduces a fluid received from the outside into the variable volumetric body 410 or discharges the fluid within the variable volume body 410 .
  • the press frame 560 is coupled with the vertical movable body 540 moving in the vertical direction to guide the vertical movable body 540.
  • the first guide shaft 561, the second guide shaft 562, and the third guide shaft 563 are coupled with the vertical movable body 540. and a fourth guide shaft 564 .
  • the first guide shaft 561 to the fourth guide shaft 564 may have a rod shape, but is not limited thereto.
  • the volume-variable body 410 is in contact with the forming film 10 after some fluid is introduced and expanded to a predetermined volume before contact with the forming film 10 , and the remaining after contact with the forming film 10 . It is more preferable that the fluid is introduced and expanded, so that the forming film 10 on the mold 210 is pressed to be molded into a 3D shape.
  • the step-by-step volume change of the variable volume body 410 may be performed by interlocking the change in the lowering position of the variable volume body 410 according to the lowering of the press head 510 .
  • variable volume body 410 descends and contacts the forming film 10 on the mold 210 to fix the forming film 10
  • the volume of the variable volume body 410 increases, or, press
  • the area in which the volume-variable body 410 presses the forming film 10 increases, and this increase in the pressing area may be stopped.
  • the pressure area may be increased while the volume or the lowering position of the volume-variable body 410 is changed again, and the forming film 10 may be formed by repeating this process.
  • the curved portion of the forming film 10 is in contact with the curved portion of the forming film 10 rather than the curvature of the curved portion of the formed forming film 10 of the mold 210
  • the curvature of the curved surface may be the same or greater.
  • the curved portion of the forming film 10 is in contact with the curved portion of the formed film 10 rather than the curved portion of the formed forming film 10 of the smart device.
  • the curvature of the curved surface of the liquid crystal may be the same or smaller.
  • variable-volume body 410 has elasticity, when forming the forming film 10 , the volume-variable body 410 may wrap the bent portion of the forming film 10 .
  • the smart device may be a device equipped with a liquid crystal display such as a smart phone or a tablet PC, and the formed forming film 10 may be adhesively installed on the glass (liquid crystal) of the smartphone or the glass (liquid crystal) of the tablet PC. have.
  • the bending portion of the forming film 10 is molded in a state in which the forming film 10 is in close contact with the curved surface of the mold 210 , and then the curved portion of the formed forming film 10 is designed by elasticity. Since the curvature is provided, the springback phenomenon can be prevented and, at the same time, the occurrence of thermal wrinkles or the occurrence of molding damage can be prevented.
  • the fluid controller 520 is connected to a pump formed outside the forming film manufacturing apparatus of the present invention, and the pump pressurizes the fluid to the fluid controller 520 or provides a fluid suction force to the fluid controller 520 .
  • the fluid may be air, but is not limited thereto.
  • the fluid controller 520 may include a fluid control valve.
  • the pump pressurizes and supplies the fluid to the fluid controller 520
  • the fluid may be introduced into the variable-volume body 410 while the fluid control valve is opened to increase the volume of the variable-volume body 410 .
  • the fluid control valve is closed to maintain the shape of the volumetric body 410 having an increased volume.
  • the fluid control valve is opened and the fluid flows out to the pump, so that the volume of the variable volume body 410 may be reduced.
  • the press unit may further include a screw guide body 565 fixedly coupled to the press frame 560 and having a female thread formed on an inner surface thereof.
  • the screw shaft 530 may have a male thread formed on an outer surface thereof, and the screw shaft 530 and the screw guide body 565 may be coupled thereto.
  • the screw shaft 530 performs a vertical linear motion, and accordingly, the press motor 550 performs a vertical linear motion, so that the press motor
  • the vertical moving body 540 combined with the 550 may perform vertical and linear motion.
  • the fluid controller 520 and the press head 510 may perform a vertical linear motion according to the vertical linear motion of the screw shaft 530 .
  • the press unit may include a press head guide shaft 570 coupled to the press head 510 and guiding the vertical linear motion of the press head 510 . Accordingly, even when the screw shaft 530 rotates, the press head 510 and the fluid controller 520 do not rotate, and the press head 510 can perform vertical and linear motion along the press head guide shaft 570 .
  • the other end of the screw shaft 530 coupled to the fluid controller 520 has a curved outer surface in which no male thread is formed, and the other end of the screw shaft 530 is free to rotate with respect to the fluid controller 520 . can be done
  • the mold 210 is formed in a shape corresponding to the molding shape of the forming film 10, and may be formed of metal.
  • the mold part 200 is installed to be coupled to the press frame 560 , and may be positioned to be spaced apart from the press head 510 in the lower direction of the press head 510 .
  • the press frame 560 may include a support part 566 for supporting the mold part 200, and by fixing the mold part 200 to the support part 566, it is positioned opposite to the press head 510. can be installed.
  • the variable volume body 410 may be formed of a material having elasticity, and specifically, may be formed of a natural rubber or a polymer material. In the embodiment of the present invention, although it is described that the variable volume body 410 is formed of the same material as described above, it is not necessarily limited thereto, and may be formed of another material having elasticity.
  • the volume-variable body 410 may have a shape of a rectangular parallelepiped having a curved edge when the volume is increased. Accordingly, the bottom surface of the bulky body 410, which has increased in volume, is in contact with the forming film 10, and the volumetric body 410 is formed on the mold 210 by the descent of the press head 510. The forming film 10 on the mold 210. A pressing process of pressing the .
  • the peripheral heating unit 100 is formed in plurality, and may perform radiant heat transfer toward the forming film 10 . And, the peripheral heating unit 100 is coupled to the press unit and the support actuator 120 for performing an axial rotational movement, and the peripheral heating unit coupled with the support actuator 120 and transferring radiant heat to the forming film (10).
  • a sieve 110 may be provided.
  • the peripheral heating unit 100 is coupled to the press head 510 and may be disposed along the circumferential direction of the volumetric body 410 on the lower surface of the press head 510 .
  • the upper end of the support actuator 120 is coupled to the lower surface of the press head 510 , and the support actuator 120 may perform an axial rotational motion. It may mean that the support actuator 120 rotates in a predetermined angle range with the upper end of the support actuator 120 as an axis.
  • the support actuator 120 when the volumetric body 410 descends, the support actuator 120 performs a rotational motion in a direction spaced apart from the volumetric body 410, and accordingly, the peripheral heating body 110 and the support actuator (120) is spaced apart from the volumetric body 410, the peripheral heating unit 100 and the forming film 10 may be prevented from interfering in contact.
  • a peripheral heating element 110 that generates radiant heat and transfers radiant heat to the surface of the forming film 10 may be coupled to the portion facing the forming film 10 from the supporting actuator 120 , and the peripheral heating element 110 may be coupled thereto. ) may perform radiant heat transfer by emitting infrared rays to the forming film 10 , but the heat generation method of the peripheral heating element 110 is not limited thereto.
  • peripheral heating units 100 As a plurality of peripheral heating units 100 are formed as described above, a portion of the forming film 10 in which one supporting actuator 120 performs radiative heat transfer and another supporting actuator 120 perform radiative heat transfer. Different portions of the forming film 10 may be formed differently. That is, the heat transfer region of the forming film 10 may be divided by each of the peripheral heating units 100 .
  • each of the support actuators 120 performs a separate axial rotation motion, so that one support actuator 120 transfers radiant heat within one heat transfer region in the forming film 10 . It is possible to select a delivery site that is a site that performs That is, radiant heat by the peripheral heating element 110 through the axial rotation movement of the support actuator 120 may be transferred toward a specific portion of the forming film 10 .
  • the axial rotational motion of one supporting actuator 120 is repeatedly performed in a predetermined angular range (repeated swing motion)
  • radiant heat transfer is uniformly performed for one heat transfer region in the forming film 10 . can be
  • the control unit is configured to move from the peripheral heating element 110 to the forming film 10 .
  • the amount of radiant heat transferred it is possible to compensate for a decrease in the amount of heat according to the distance between the peripheral heating element 110 and the surface of the forming film 10 . That is, the amount of heat of radiant heat emitted from the peripheral heating element 110 according to the axial rotational movement of the support actuator 120 may be varied in real time.
  • the forming film manufacturing apparatus of the present invention may further include a temperature sensor 420 for measuring the temperature of the forming film 10 . And, as shown in FIG. 1 , a plurality of temperature sensors 420 may be combined with the press frame 560 to measure the temperature of the entire surface of the forming film 10 . And, the temperature distribution over the entire surface of the forming film 10 may be transmitted to the control unit.
  • the control unit generates a control signal using the temperature distribution information on the surface of the forming film 10 , and transmits the control signal to each peripheral heating unit 100 , and is transferred from the peripheral heating unit 100 to the forming film 10 . It is possible to control the amount of radiant heat transferred or the transfer site.
  • the control unit may increase the temperature of the corresponding transfer site by specifying a radiant heat transfer site within the one heat transfer region, and controlling the radiant heat transfer temperature, transfer time, etc. for the corresponding transfer site.
  • the heating of the forming film 10 by the control of each of the peripheral heating units 100 as described above is performed with a plurality of side heating elements 230 and a plurality of first lower heating elements provided in the mold part 200 as follows.
  • the heating of the forming film 10 by the control of each of the sieve 241 and the plurality of second lower heating elements 242 may be performed in combination.
  • the surface heating of the forming film 10 for molding the forming film 10 is performed by the peripheral heating unit 100 as described above, the heating of the forming film 10 by the mold unit 200 and Together, the heating error in the entire forming film 10 can be minimized, and accordingly, the dimensional error after the forming of the forming film 10 is minimized, and in the region (edge, etc.) of the forming film 10 having a curvature.
  • the springback phenomenon can be minimized.
  • FIG. 4 is a perspective view of the mold part 200 according to the first embodiment of the present invention
  • FIG. 5 is a plan view of the mold part 200 according to the first embodiment of the present invention
  • FIG. It is a cross-sectional view of the mold part 200 according to the first embodiment
  • 7 is a plan view of a portion of the mold part 200 according to the first embodiment of the present invention
  • FIG. 8 is a cross-sectional view of the formation of the reflector 330 according to each embodiment of the present invention.
  • the side heating element 230 , the side insulation body 310 , the reflector 330 , and the like are omitted for convenience of understanding.
  • the mold part 200 is used for molding the forming film 10, and the mold 210 having a curved surface on the upper edge is combined with the bottom surface of the mold 210, A bottom wall 221 supporting the mold 210 and a side wall 222 formed along the circumferential direction of the bottom wall 221 and spaced apart from the mold 210 to surround the side surface of the mold 210 ) having a housing 220, a plurality of side heating elements disposed along the circumferential direction of the inner surface of the side wall 222 of the housing 220 and coupled to the housing 220, transferring heat to the mold 210 A plurality of first lower heating elements 241 coupled to the sieve 230 and the bottom wall 221 of the housing 220 and arranged to be in contact with the bottom surface of the mold 210 to transfer heat to the mold 210 .
  • the mold part 200 is coupled to the bottom wall 221 of the housing 220 and is disposed along the circumferential direction of the mold 210 to conduct convection or radiation heat transfer around the mold 210 .
  • a lower heating body 242 may be further provided.
  • the control unit is connected to the plurality of side heating elements 230 and the plurality of first lower heating elements 241, the control unit controls each of the plurality of side heating elements 230, and the plurality of first lower heating elements 241, respectively By controlling the , the amount of heat transferred to each part of the forming film 10 can be controlled separately.
  • the control unit may transmit a control signal to each of the plurality of side heating elements 230 , the plurality of first lower heating elements 241 , and the plurality of second lower heating elements 242 , and the Each of the plurality of side heating elements 230, each of the plurality of first lower heating elements 241, and each of the plurality of second lower heating elements 242 may perform heat at different heating temperatures by the control signal.
  • the forming film 10 which is a film formed in the mold 210 , may have a shape in which various curvatures and shapes are complexly applied to each part, and in this case, a different heating temperature and heating time for each part of the forming film 10 . Heating may be performed to perform foaming.
  • each of the plurality of side heating elements 230 and the plurality of first lower heating elements 241 and the plurality of second lower heating elements 242 are controlled by the control signal of the control unit. Any one side heating element 230 selected from among the plurality of side heating elements 230 performs convective heat transfer and the other side heating element 230 performs radiative heat transfer, and a plurality of second lower heating elements 242. Any one of the second lower heating elements selected from among 242 performs convective heat transfer and the other second lower heating element 242 performs radiative heat transfer, so that a plurality of side heating elements 230 and a plurality of second lower parts Heat transfer method of each heating body 242 may be formed differently.
  • any one side portion of the forming film 10 can be heated by a method selected from convective heat transfer, radiative heat transfer, or a combination of convective heat transfer and radiative heat transfer.
  • a portion other than the side portion of the forming film 10 may be heated by conduction heat transfer.
  • convective heat transfer is performed from the side heating element 230 adjacent to a portion of the forming film 10 requiring relatively high temperature heating to a portion of the forming film 10, and a fine Radiant heat transfer from the adjacent side heating element 230 to the other portion of the forming film 10 is performed on the other portion of the forming film 10 requiring temperature change, and the side heating element 230 and the second lower portion according to the use Heat transfer by a combination of convection and radiation is performed to another portion of the forming film 10 by the heating body 242 , and conduction heat transfer is performed to a portion in contact with the mold 210 , forming the forming film 10 .
  • heating for is performed complexly, the dimensional error after molding of the forming film 10 is minimized, and the springback phenomenon in the region (edge, etc.) of the forming film 10 having a curvature can be minimized.
  • the type of the forming film 10 to be formed is different depending on the type of the mold 210 , so that the user can select the type of the mold 210 .
  • the control unit can determine the type of the forming film 10 to be formed, and the heating temperature of each heating element for the forming film 10 selected by the user using the reference data prepared in advance and After analyzing the heating time, each heating element can be controlled.
  • a side insulator 310 is formed between one side heating element 230 and the other side heating element 230 among the plurality of side heating elements 230 to perform heat insulation.
  • each side heating element 230 is controlled by the control of the controller, one side heating element 230 and the other side heating element 230 may have different heating temperatures or heating times, respectively, Accordingly, thermal interference between adjacent side heating elements 230 may occur.
  • a side insulator 310 may be formed between one side heating element 230 and the other side heating element 230 . Since the heat between the adjacent side heating elements 230 is blocked by the side insulation body 310 , it is possible to easily control each of the side heating elements 230 .
  • the side insulator 310 may be formed of, for example, synthetic resin, an organic or inorganic material (glass, metal, silicon, ceramic, etc.) having an excellent thermal insulation effect in order to block heat.
  • the side insulator 310 may have a plate shape.
  • the side insulating body 310 is a cell type including a plurality of pores, a reflective type in which the surface facing the side heating body 230 is curved, a capacitive type in which the internal space is filled with a fluid, or an internal space It may be formed in a vacuum type formed by vacuum.
  • the present invention is not limited thereto.
  • the mold part 200 is coupled to the bottom wall 221 of the housing 220 and is formed along the circumferential direction of the mold 210 , and the mold 210 and The second lower heating element 242 may further include a lower insulator 320 for performing thermal insulation.
  • the bottom wall 221 is formed with a bottom groove 221a having the shape of a groove, and the body of the mold 210 is inserted and coupled to the bottom groove 221a such as the mold 210 and the housing 220 . of the bottom wall 221 may be coupled.
  • the first lower heating element 241 may be formed on the bottom surface of the bottom groove 221a to be in contact with the mold 210 to conduct conductive heat transfer to the mold 210 .
  • the second lower heating element 242 may be formed in a portion of the bottom wall 221 in which the bottom groove 221a is not formed, and the bottom wall 221 as described above to facilitate convection or radiation heat transfer. It may be formed adjacent to the upper surface of a portion of the. 6, in order to prevent interference between the conduction heat transfer control by the first lower heating element 241 and the convective or radiative heat transfer control by the second lower heating element 242, the circumferential direction of the mold 210 is Accordingly, that is, the lower insulator 320 may be formed along the circumference of the bottom groove 221a, and the first lower heating element 241 and the second lower heating element 242 may be formed by the lower insulator 320 . is spaced apart so that insulation can be performed.
  • the mold part 200 is a reflector 330 formed adjacent to any one of the plurality of side heating elements 230 to control the heat transfer direction.
  • the reflector 330 may be formed to include a portion that reflects light, such as a mirror, and the reflector 330 may be formed such that the portion that reflects light in this way faces the side heating element 230 .
  • the heat transferred from the side heating element 230 for performing convective heat transfer or the side heating element 230 for performing radiative heat transfer is reflected by the reflector 330 to form a part of the forming film 10.
  • the heat reflected from the heat transferred directly from the side heating element 230 to a part of the forming film 10 is combined, so that heat concentration on a part of the forming film 10 is implemented, and this By minimizing the amount of heat lost along the way, it is possible to increase the thermal efficiency of the mold part 200 .
  • FIGS. 9 and 10 are perspective views of the mold part 200 according to the second embodiment of the present invention
  • FIGS. 11 and 12 are the mold parts 200 according to the third embodiment of the present invention. is a perspective view.
  • FIGS. 9 and 11 show an open state of each cover body 250
  • FIGS. 10 and 12 show a closed state of each cover body 250 .
  • the mold part 200 may further include a cover part coupled to the housing 220 and selectively covering a part of the open upper part of the housing 220 .
  • the cover part performs a sliding motion on the upper part of the housing 220 to selectively cover a part of the open upper part of the housing 220
  • the cover body 250 is coupled to the housing 220 and the cover body 250 .
  • a guide body 260 for guiding the sliding movement of the may be provided.
  • each cover body 250 has protrusions 250a at both ends, and each guide body 260 is provided with a guide groove 262 formed in a groove shape along the longitudinal direction of the guide body 260 . Accordingly, each cover body 250 may perform a sliding motion by moving the protrusion 250a along the guide groove 262 .
  • each cover body 250 When heating the mold 210, when each cover body 250 performs a sliding motion so as to be close to each other, a part of the open upper portion of the housing 220 may be covered by each cover body 250. have. Accordingly, each cover body 250 is positioned on the side heating element 230 and, at the same time, is positioned adjacent to the mold 210 to minimize the amount of heat discharged from the inside of the housing 220 to the outside. can As a result, heat emitted from the side heating element 230 or the heated mold 210 to the outside air is minimized, thereby increasing the thermal efficiency of the side heating element 230 and the first lower heating element 241 .
  • the upper portion of the mold 210 may not be covered by the cover part, and thus, the volume-variable body 410 and the forming film 10 on the mold 210 may be in contact through the uncovered portion.
  • each cover body 250 when performing a sliding motion so that each cover body 250 is spaced apart from each other when cooling the mold 210 is performed, the upper portion of the housing 220 partially covered by each cover body 250 is to be opened. can Accordingly, each cover body 250 is spaced apart from each side heating element 230 to easily discharge the internal heat of the housing 220 to the outside air, thereby increasing the cooling efficiency of the mold 210 . can
  • the 1-1 cover body 251a and the 1-2 cover body 251b each have a plate shape.
  • a 1-3 cover body 251c and a 1-4 cover body 251d are formed, and each cover body 250 is introduced into the guide groove 262 and slides along the guide groove 262. It may be provided with a protrusion (250a) that performs the.
  • the guide grooves 262 of the 1-1 guide body 261a when heating the mold 210, the guide grooves 262 of the 1-1 guide body 261a so that the 1-1 cover body 251a and the 1-2 cover body 251b are close to each other, respectively.
  • a sliding motion is performed along the guide groove 262 of the 1-3 guide body 261c and the guide groove 262 of the 1-4 guide body 261d, so that each cover body 250 is heated by each side. It is positioned on the sieve 230 , and at the same time, it may be positioned adjacent to the mold 210 .
  • the sliding of the 1-1 cover body 251a and the 1-2 cover body 251b also on the side wall 222 connected to the 1-1 guide body 261a and the 1-2 guide body 261b.
  • a guide groove 262 is formed for movement, and the protrusion 250a slides along the guide groove 262 formed in this way.
  • each cover body 250 As another embodiment of the cover part, as shown in FIGS. 11 and 12 , as the cover body 250 , the 2-1 th cover body 252a and the 2-2 th cover body 252a and 2-2 corresponding to each other have a 'c' shape, respectively.
  • a cover body 252b is formed, and each cover body 250 may include a protrusion 250a that is introduced into the guide groove 262 to perform a sliding motion along the guide groove 262 .
  • the 2-1 cover body (252a) and the 2-2 cover body (252b) by performing a sliding motion along the guide grooves 262 coupled to each other so as to be close to each other.
  • each of the cover body 250 is positioned on the side heating element 230 , and at the same time, may be positioned adjacent to the mold 210 .
  • peripheral heating element 120 support actuator
  • housing 221 floor wall
  • side heating element 241 first lower heating element
  • protrusion 251a cover body 1-1
  • 251b Cover body 1-2
  • 251c Cover body 1-3
  • volume-variable body 410 volume-variable body 420: temperature sensor
  • press head 520 fluid controller
  • screw shaft 540 vertical moving body
  • press motor 560 press frame
  • first guide shaft 562 second guide shaft
  • screw guide body 566 support part

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention concerne, selon un mode de réalisation, une technique permettant d'augmenter l'efficacité de moulage de film de formage en permettant une régulation de température d'un élément de pression qui presse un film de formage. Un appareil de fabrication de film de formage 3D apte à réguler la température, selon un mode de réalisation de la présente invention, comprend : une unité matrice destinée au moulage d'un film de formage ; une unité presse qui est positionnée de façon à correspondre à l'unité matrice et espacée d'une distance variable de l'unité matrice ; un corps à volume variable qui est accouplé à l'unité presse, est élastique et change ainsi de volume en réponse à l'entrée/la sortie de fluide provoquée par l'unité presse, et moule le film de formage en une forme 3D par changement de volume et venant ainsi en contact et pressant le film de formage positionné dans l'unité matrice ; une unité de chauffage circonférentielle qui est accouplée à l'unité presse et disposée le long de la direction circonférentielle du corps à volume variable de façon à transférer de la chaleur au film de formage ; et une unité de commande reliée à l'unité de chauffage circonférentielle pour commander l'unité de chauffage circonférentielle.
PCT/KR2020/009717 2020-04-06 2020-07-23 Appareil de fabrication de film de formage 3d apte à réguler la température WO2021206224A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0041454 2020-04-06
KR1020200041454A KR102319135B1 (ko) 2020-04-06 2020-04-06 온도 제어가 가능한 3d 포밍필름 제조 장치

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WO2021206224A1 true WO2021206224A1 (fr) 2021-10-14

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KR (1) KR102319135B1 (fr)
WO (1) WO2021206224A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293895A (ja) * 1992-04-20 1993-11-09 Dainippon Printing Co Ltd 真空プレス積層成形装置及び方法
KR20070041468A (ko) * 2007-03-16 2007-04-18 이중재 전열사출금형
KR100767574B1 (ko) * 2006-10-27 2007-10-17 윤상배 필름 포밍장치
KR20110074114A (ko) * 2009-12-24 2011-06-30 (주)포밍코리아 필름 열포밍 장치
KR102035604B1 (ko) * 2018-11-05 2019-10-23 리얼룩앤컴퍼니 주식회사 3d 포밍필름 제조 장치 및 이를 이용한 3d 포밍필름 제조 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101266375B1 (ko) 2011-07-08 2013-05-22 주식회사 다이아벨 포밍기 및 이를 이용한 포밍 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293895A (ja) * 1992-04-20 1993-11-09 Dainippon Printing Co Ltd 真空プレス積層成形装置及び方法
KR100767574B1 (ko) * 2006-10-27 2007-10-17 윤상배 필름 포밍장치
KR20070041468A (ko) * 2007-03-16 2007-04-18 이중재 전열사출금형
KR20110074114A (ko) * 2009-12-24 2011-06-30 (주)포밍코리아 필름 열포밍 장치
KR102035604B1 (ko) * 2018-11-05 2019-10-23 리얼룩앤컴퍼니 주식회사 3d 포밍필름 제조 장치 및 이를 이용한 3d 포밍필름 제조 방법

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KR102319135B1 (ko) 2021-10-29

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