WO2014054240A1 - Dispositif de moulage par transfert et procédé de moulage par transfert - Google Patents

Dispositif de moulage par transfert et procédé de moulage par transfert Download PDF

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Publication number
WO2014054240A1
WO2014054240A1 PCT/JP2013/005615 JP2013005615W WO2014054240A1 WO 2014054240 A1 WO2014054240 A1 WO 2014054240A1 JP 2013005615 W JP2013005615 W JP 2013005615W WO 2014054240 A1 WO2014054240 A1 WO 2014054240A1
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WO
WIPO (PCT)
Prior art keywords
resin plate
bucket
processing unit
stamper
transfer molding
Prior art date
Application number
PCT/JP2013/005615
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English (en)
Japanese (ja)
Inventor
芳典 南波
星也 舘
Original Assignee
出光ユニテック株式会社
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
Priority claimed from JP2012219818A external-priority patent/JP2016000456A/ja
Priority claimed from JP2012219814A external-priority patent/JP2016000455A/ja
Application filed by 出光ユニテック株式会社 filed Critical 出光ユニテック株式会社
Publication of WO2014054240A1 publication Critical patent/WO2014054240A1/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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing

Definitions

  • the present invention relates to a transfer molding apparatus and a transfer molding method for transferring a concavo-convex pattern by pressing a stamper having a concavo-convex pattern onto a predetermined resin plate, and in particular, vacuum processing in which a resin plate and a stamper are accommodated in a sealed space and sucked.
  • the present invention relates to a transfer molding apparatus and a transfer molding method.
  • Patent Document 1 proposes a technique for performing an embossing process that makes it easy for air to escape to the resin plate in advance.
  • resin plates are usually manufactured by extrusion molding unlike injection molding, it is difficult to emboss the surface, and such surface processing is applied to the primary molded product each time. Applying it is cumbersome and reduces the production efficiency.
  • the vacuum processing is started, the resin plate and the stamper are brought into contact with each other at a stretch, so that an air layer is confined between them, so that the contact is delayed while inhalation is started by the vacuum processing. Technology was sought.
  • the present invention has been proposed in order to solve such a conventional problem, and transfer molding capable of discharging air between a stamper and a resin plate without subjecting a primary molded product to surface processing.
  • the purpose is to provide a device. It is another object of the present invention to provide a transfer molding apparatus and a transfer molding method in which contact between a resin plate and a stamper is delayed at an initial stage of intake air so that they are brought into contact without an air layer interposed.
  • a transfer molding apparatus of the present invention includes a bucket that houses a predetermined resin plate and a stamper having a concavo-convex pattern, and a vacuum processing unit that sucks the inside of the bucket, and the resin plate
  • a transfer molding apparatus that presses the stamper onto the resin plate to transfer the uneven pattern to the resin plate, and the stamper discharges air while being in contact with the resin plate while contacting the air between the stamper and the resin plate.
  • the discharge channel forming means for forming a possible channel is provided.
  • the transfer molding apparatus of the present invention includes a bucket that accommodates a predetermined resin plate and a stamper having an uneven pattern, and a vacuum processing unit that sucks the inside of the bucket, and presses the stamper against the resin plate.
  • the transfer molding method of the present invention is a transfer molding method in which a stamper having a concavo-convex pattern is pressed against a predetermined resin plate to transfer-mold the concavo-convex pattern onto the resin plate, and the resin plate and the stamper are A vacuum processing step for sucking air while being accommodated in a space; and a predetermined delay unit interposed between the resin plate and the stamper includes the resin plate and the stamper at an initial stage of suction in the vacuum processing step. This is a method for delaying contact with the device.
  • the stamper is provided with a discharge flow path forming means for forming a flow path that can be discharged while contacting the air between the resin plate and the resin plate. Air can be discharged from between the stamper and the resin plate without subjecting the molded product to surface processing, and production efficiency can be improved. Further, according to the transfer molding apparatus and the transfer molding method of the present invention, these can be brought into contact with each other without interposing an air layer between the resin plate and the stamper. The uneven pattern can be transferred uniformly.
  • 1 is a schematic plan view of a transfer molding apparatus according to an embodiment of the present invention.
  • 1 is a schematic side view of a transfer molding apparatus according to an embodiment of the present invention.
  • 1 is a schematic rear view of a transfer molding apparatus according to an embodiment of the present invention.
  • It is a front view of the vacuum processing part of the transfer molding device concerning one embodiment of the present invention, an intermittent rotation part, and a cooling processing part.
  • It is a schematic perspective view of the open state of the bucket which concerns on one Embodiment of this invention.
  • It is a schematic sectional drawing of the closed state of the bucket concerning one embodiment of the present invention.
  • It is a schematic perspective view of the heat processing part which concerns on one Embodiment of this invention.
  • FIG. 1A is a schematic perspective view
  • FIG. 1A is a schematic perspective view
  • FIG. 1A is a schematic perspective view
  • FIG. 1B It is a front view of the stamper which concerns on one Embodiment of this invention, (a) is a figure at the time of 4 product picking, (b) is a figure at the time of 6 product picking.
  • the transfer molding apparatus 1 includes an infeed processing unit 10, a vacuum processing unit 20, heating processing units 30 and 40, a cooling processing unit 50, and a sending processing unit 60. It includes two processing units, six buckets 80 (80a to 80f), and an intermittent rotation unit 70 that performs intermittent rotation while supporting the bucket 80.
  • the intermittent rotation unit 70 is disposed substantially at the center of the apparatus, and alternately rotates and stops about the shaft 71.
  • the six buckets 80a to 80f are supported on the circumference of a circle centered on the shaft 71 at intervals of about 60 degrees, are driven to rotate by the intermittent rotation unit 70, and are intermittently stopped for a predetermined time every rotation of about 60 degrees. Repeat the rotation.
  • the infeed processing unit 10, the vacuum processing unit 20, the heating processing units 30 and 40, the cooling processing unit 50, and the sending processing unit 60 are provided as independent devices, respectively, on different normals of a circle around the axis 71,
  • the buckets 80a to 80f are arranged on the circumference as a movement locus and at intervals of about 60 degrees corresponding to the intermittent stop positions of the buckets 80.
  • each bucket 80 makes a round in order of the feeding processing unit 10, the vacuum processing unit 20, the heating processing units 30, 40, the cooling processing unit 50, and the sending processing unit 60.
  • the primary molded resin plate J1 is automatically fed, and the resin plate J2, which is a secondary molded product obtained by transfer molding of the concavo-convex pattern, is automatically fed out.
  • the transfer molding apparatus 1 each part of the transfer molding apparatus 1 will be described in detail.
  • the intermittent rotation unit 70 is disposed substantially at the center of the apparatus and is driven to rotate by a servo motor or the like, and rotates clockwise about 60 degrees in FIG.
  • each bucket 80 is configured to move across the processing units 10-60.
  • the shaft 71 is formed so as to be rotatable by itself, and has a cylindrical shape as shown in FIG. 4, and includes six support members that extend outward from the outer peripheral surface of the cylinder.
  • the bucket 80 (80a to 80f) is supported.
  • the intermittent rotation unit 70 detects the rotational position of the shaft 71 by an encoder (rotation detector) function such as a servo motor or an optical sensor that optically detects the position on the circumference of each bucket 80.
  • an encoder rotation detector
  • each bucket 80 is stopped at a position corresponding to each processing unit 10-60, and then rotated, and each bucket 80 is again positioned corresponding to each processing unit 10-60. The operation of stopping at is repeated.
  • each of the six buckets 80a to 80f has a lid portion 81 positioned on the upper side along the vertical direction and a mounting portion 82 positioned on the lower side.
  • the lid portion 81 and the placement portion 82 are disposed so as to face each other so that the resin plate J (J1, J2) and the stampers 813 and 823 having an uneven pattern on the surface can be sandwiched therebetween.
  • Opening and closing operations are performed by moving in a vertically movable manner. This opening / closing operation is realized by the following configuration (bucket opening / closing means).
  • the lid portion 81 and the placement portion 82 are supported so as to be rotatable together with the shaft 71, the placement portion 82 is supported so as not to swing with respect to the shaft 71, and one lid portion 81 is attached to the shaft 71. It is supported in such a way that it can move up and down, and is connected to driving means such as motors, electromagnetic solenoids, air cylinders, hydraulic cylinders, etc. provided in the respective buckets 80a to 80f. Move to. With such a configuration, by driving the driving means according to the rotational position of the shaft 71, the lid 81 moves in the vertical direction, and the opening and closing operation of the bucket 80 is realized.
  • driving means such as motors, electromagnetic solenoids, air cylinders, hydraulic cylinders, etc.
  • the driving means for moving the lid portion 81 up and down is driven and controlled according to the rotational position of the shaft 71, whereby the bucket 80 is opened and closed according to the position on the circumference.
  • the lid portion is detected while detecting the rotational position of the shaft 71 by the encoder (rotation detector) function of the servo motor or the like described above, or the optical sensor that optically detects the position on the circumference of each bucket 80.
  • the encoder rotation detector
  • the bucket 80 can be opened and closed according to the position on the circumference.
  • the bucket 80 rotates in an open state by stopping the cover 81 while moving the lid 81 upward, and reaches the processing units 20 to 50.
  • the bucket 80 is rotated while being closed by stopping the lid 81 while moving the lid 81 downward.
  • the buckets 80a to 80f perform opening and closing operations according to the positions on the circumference corresponding to the processing units 10 to 60 while repeating rotation and stop about the shaft 71. .
  • the lid portion 81 and the placement portion 82 are in contact with each other so that all of the weight of the lid portion 81 is applied to the placement portion 82, and in the open state, the gap in which the resin plate J can be fed and unloaded. (For example, about 250 mm) is set to be formed between the lid portion 81 and the placement portion 82.
  • the bucket 80 that performs such an opening / closing operation is configured as follows.
  • the buckets 80a to 80f are formed in a rectangular shape having a long side in the normal direction of a circle centered on the shaft 71, and each includes a lid portion 81 and a mounting portion 82, thereby forming a resin plate formed in a rectangular shape.
  • J and stampers 813 and 823 can be stacked and accommodated.
  • the lid portion 81 and the placement portion 82 have the same material and outer shape (plate shape), and are configured by combining a plurality of members. Specifically, as shown in FIGS.
  • the lid portion 81 and the mounting portion 82 cover the frames 811 and 821 having the opening portions 811 a and 821 a in the central portion and the opening portions 811 a and 821 a.
  • the frames 811 and 821 are made of aluminum, and the holding plates 812 and 822 are made of brass having high thermal conductivity.
  • elastic seal members 815 and 825 that are brought into contact with each other in the closed state of the bucket 80 are fitted in the outer peripheral edge portions on the opposite surface sides of the frames 811 and 821.
  • the elastic seal members 815 and 825 are formed of an elastic member such as rubber or silicon.
  • the elastic seal member 815 is formed of an annular or string-like elastic member having a square cross section
  • the elastic seal member 825 is circular in cross section. It consists of an annular or string-like elastic member.
  • the elastic seal members 815 and 825 are more elastically deformed than the elastic seal member 825 when the elastic seal member 815 is closed, and the elastic seal member 825 having a round cross section has an angular cross section.
  • the inner space surrounded by the elastic seal members 815 and 825 in the closed state of the bucket 80 becomes the housing portion 800 in which the resin plate J and the stampers 813 and 823 are housed, and the airtightness in the housing portion 800 is ensured.
  • the elastic member 825 having a round cross section can be not only an elastic member having a solid cross section but also a hollow cross section having a space inside.
  • the elastic seal member 825 having a round cross section is an elastic member having a hollow cross section, contrary to the case described above, the elastic seal member 825 is more elastically deformed than the elastic seal member 815 in the closed state, and the cross section It is also possible to select the elastic seal members 815 and 825 having the elastic property that the round elastic seal member 825 is crushed and is in surface contact with one side of the elastic seal member 815 having a square cross section.
  • the elastic seal member 815 may be an elastic member having a round cross section
  • the elastic seal member 825 may be an elastic member having a square cross section.
  • the elastic seal members 815 and 825 are in a state of being pressed against each other, rather than being in a state where the elastic seal members 815 and 825 are in contact with each other without being pressed against each other (a state in which they are in contact with no load).
  • the closed state of the bucket 80 has an elastic characteristic that increases the contact area.
  • the elastic seal member 815 having a square cross section and the elastic seal member 825 having a round cross section are in line contact with each other, Is in surface contact.
  • the closed state has an elastic characteristic that increases the contact area as compared with a state where the closed state is merely in contact.
  • one of the elastic seal members 815 and 825 has a round cross section, and the other has a round cross section.
  • the elastic seal members 815 and 825 may be a combination of angular cross sections.
  • both of the elastic seal members 815 and 825 may be a combination of round cross sections. Even in such a combination, it is only necessary to have an elastic characteristic that one bites into the other in the closed state, or one deforms (collapses) more than the other.
  • any shape can be adopted as the cross-sectional shape of the elastic seal members 815 and 825.
  • the closed state all the dead weights of the lid portion 81 are in contact with each other so as to be applied to the placement portion 82, and the inside of the accommodating portion 800 is sucked into the elastic seal member 825 on the placement portion 82 side. Regardless of whether or not, at least the weight of the lid 81 is applied, so that the elastic seal members 815 and 825 are pressed against each other.
  • an intake hole 827 is formed on the inner side of the frame 821 where the elastic seal member 825 is inserted and closer to the shaft 71.
  • the intake hole 827 is connected to a vacuum pump via a predetermined tube, and at least during the processing over the processing units 20 to 50 in which the bucket 80 is in a closed state, the inside of the bucket 80 continuously sucks air through the intake hole 827. Is done.
  • a plurality of pilot holes for screwing the clamping plates 812 and 822 and the stampers 813 and 823 with screws 90 are formed in the periphery of the openings 811a and 821a of the frames 811 and 821.
  • a helicate 91 is screwed into the prepared hole as a means for preventing the screw 90 from loosening.
  • the helisert 91 is a female screw member in which a linear member having a rhombus section is spirally wound, and a screw 90 is screwed into the female screw member.
  • the screw 90 and the helisert 91 may be made of the same material as that of the frames 811 and 821 so that the screw 90 and the helisert 91 can be synchronized with the expansion and contraction of the prepared hole.
  • a helisert 91 it is preferable to use a helisert 91.
  • a wedge member for example, an elastic member such as metal or rubber
  • the adhesive may be injected between the screw 90 and the pilot hole.
  • the sandwiching plates 812 and 822 are arranged to face each other so as to close the openings 811 a and 821 a of the frames 811 and 821, and are screwed to the frames 811 and 821 by screws 90.
  • the sandwiching plates 812 and 822 are opposed to each other so as to sandwich the stampers 813 and 823 and the resin plate J.
  • the openings 811a and 821a and the sandwiching plates 812 and 822 are sealed with a predetermined sealing member.
  • the exposed surfaces 812a and 822a of the sandwiching plates 812 and 822 exposed to the outside through the openings 811a and 821a function as a press surface, a heating surface, and a cooling surface in the respective processing units 30 to 50.
  • the bucket 80 includes the frames 811 and 821 having the openings 811a and 821a, and the sandwiching plates 812 and 822 that close the openings 811a and 821a and are disposed to face the stampers 813 and 823 and the resin plate J. As a result, the following effects are exhibited.
  • the bucket can be used to heat and cool the resin plate J accommodated in the bucket. It is necessary to heat and cool the whole, and for that purpose, it is preferable that the entire bucket is made of metal such as brass having excellent thermal conductivity while reducing the heat capacity.
  • metal such as brass
  • it is necessary to press the stampers 813 and 823 against the resin plate J it is necessary to press the bucket from the outside. If this happens, metal fatigue occurs due to the press. Becomes higher.
  • the bucket 80 is closed between the frames 811 and 821 having the openings 811a and 821a, and the sandwiching plates 812 and 822 that close the openings 811a and 821a and are opposed to the stampers 813 and 823 and the resin plate J. It was decided to consist of.
  • the resin plate J can be heated and cooled via the exposed surfaces 812a and 822a of the sandwiching plates 812 and 822 exposed to the outside through the openings 811a and 821a, and the exposed surfaces of the sandwiching plates 812 and 822 are exposed.
  • the stampers 813 and 823 can be pressed against the resin plate J via 812a and 822a.
  • the entire bucket 80 is not integrally formed of a metal such as brass, but only the sandwiching plates 812 and 822 are formed in a plate shape having a small heat capacity, and brass having excellent thermal conductivity. Therefore, the resin plate J can be efficiently heated and cooled while reducing the manufacturing cost. Further, even when metal fatigue occurs on the sandwiching plates 812 and 822 due to the press, the maintenance costs can be reduced because only the sandwiching plates 812 and 822 need to be replaced while the frames 811 and 821 remain unchanged. Further, the frames 811 and 821 can be made of a material different from that of the sandwiching plates 812 and 822.
  • the frame 811 and 821 can be formed of a light metal such as aluminum, the weight of the entire bucket 80 can be reduced. Thereby, since the moment of inertia of the bucket 80 can be reduced, an overrun or the like due to the inertia of the bucket 80 accompanying the rotation of the intermittent rotation unit 70 is suppressed, and the position of the bucket 80 on the circumference can be accurately controlled.
  • the stampers 813 and 823 have a rectangular shape along the shape of the bucket 80 and are plate-like members made of nickel, stainless steel or the like, and are fastened together with the clamping plates 812 and 822 by screws 90 to the frames 811 and 821. Screwed.
  • the stampers 813 and 823 are screwed to the frames 811 and 821, but are accurately positioned with respect to the frames 811 and 821 so that the stampers 813 and 823 are not displaced due to a pressing force.
  • the positioning of the stampers 813 and 823 with respect to the frames 811 and 821 is, for example, on a vertical line provided on the stamper 823 and extending perpendicularly to the long side of the stamper 823 formed in a rectangular shape as shown in FIG. This is realized by fitting positioning holes 823d and 823e formed at positions adjacent to the two long sides and positioning pins 826a and 826b provided in the frame 821 and inserted into the positioning holes 823d and 823e. .
  • the positional relationship between the positioning holes 823d and 823e and the positioning pins 826a and 826b is the shortest distance connecting the opposite sides of the stamper 823 while sandwiching the central portion of the stamper 823 as a work area.
  • the stamper 823 Since the stamper 823 is exposed to a heating / cooling cycle in which heating and cooling are alternately performed, expansion due to heating and contraction due to cooling are repeated. Due to the heating, the stamper 823 expands as a whole in the surface direction. Then, since the amount of expansion increases as the distance on the stamper 823 increases, it is preferable that the distance between the two points for positioning is as short as possible while sandwiching the central portion of the stamper 823 as a work area. become. Therefore, the two points to be positioned are on a perpendicular extending perpendicular to the long side of the stamper 823 so as to be the shortest distance connecting the opposite sides while sandwiching the center portion as a work area, and the two long points The position was adjacent to each side.
  • the positioning holes 823d and 823e can be provided in the frame 821, and the positioning pins 826a and 826b can be provided in the stamper 823, respectively.
  • the stampers 813 and 823 are plate-shaped members, but are formed in a convex shape in cross section.
  • the top surfaces 813a and 823a of the stampers 813 and 823 are contact surfaces with the resin plate J, and an uneven region R having an uneven pattern is formed.
  • the uneven region R is thermally transferred to the resin plate J1 which is a primary molded product, whereby the resin plate J2 having the uneven pattern is formed as a secondary molded product.
  • a flow path for discharging air between the stampers 813 and 823 and the resin plate J while being in contact with the resin plate J is formed.
  • at least one of the top surfaces 813a and 823a extends to the edge portions (813c and 823c), and a hairline-shaped air escape groove serving as an air escape path when contacting the resin plate J is provided.
  • a plurality of 8231s are recessed.
  • the plurality of air escape grooves 8231 are formed in a straight line and extend to the edge portions 813c and 823c on both sides of the top surfaces 813a and 823a.
  • the air escape groove 8231 is formed outside the uneven region R, so that it does not optically affect the uneven pattern forming surface of the resin plate J. Further, in the case where the air escape groove 8231 is formed outside the uneven region R, when the stampers 813 and 823 have a plurality of uneven regions R that are spaced apart from each other, the air escape groove 8231 is provided for each of the plurality of uneven regions R. It is preferable to form between.
  • Such a case having a plurality of uneven regions R means that a plurality of uneven patterns that are spaced apart from each other are formed on the resin plate J. For example, a plurality of products are manufactured from a single resin plate J.
  • a plurality of light guide plates are manufactured by dividing one resin plate.
  • a plurality of light guide plates are manufactured by dividing one resin plate.
  • FIG. 10A in the case where four uneven regions R are formed on the stamper 823, that is, when four products are manufactured from one resin plate J (four pieces are taken),
  • the air escape grooves 8231 are formed in a cross shape in appearance. Further, as shown in FIG. 10A, in the case where four uneven regions R are formed on the stamper 823, that is, when four products are manufactured from one resin plate J (four pieces are taken),
  • the air escape grooves 8231 are formed in a cross shape in appearance. Further, as shown in FIG.
  • the air escape grooves 8231 are formed in a lattice shape in appearance.
  • the air escape groove 8231 can also be formed in the uneven region R.
  • the molded resin plate J2 is used as a light guide plate, and the concavo-convex pattern is transferred as a light guide pattern when light is incident from the end of the resin plate J to cause surface emission, air escape is generated.
  • the groove 8231 is preferably formed along the light incident direction. Accordingly, light propagates in parallel with the air escape groove 8231, and light attenuation due to the influence of the air escape groove 8231 can be suppressed.
  • the discharge flow path forming means is not limited to being formed to be concave on the contact surface with the resin plate J like the air escape groove 8231 but may be formed to be convex.
  • a plurality of holes are melted and formed by irradiating the top surfaces 813a and 823a with a laser, and melted protrusions in which the melted metal (nickel, stainless steel, etc.) rises in a convex shape around each of the holes are formed. You can also By such melting convex portions, the resin plate J is separated from the top surfaces 813a and 823a, and a flow path capable of discharging the air between the resin plate J and the top surfaces 813a and 823a when vacuuming is formed. become.
  • What is formed to be convex as such a discharge flow path forming means is not limited to the melting convex portion, but may be a plurality of convex portions scattered so as to separate the resin plate J from the top surfaces 813a and 823a. Therefore, although the shape is not limited, it is preferably formed outside the uneven region R in consideration of optical effects.
  • the lower step surfaces 813b and 823b formed at a position one step lower than the top surfaces 813a and 823a, that is, at a position separated from the resin plate J, are at least non-contact surfaces that do not come into contact with the resin plate J1 before molding. It functions as a mounting surface on which a plurality of screw holes 90 to be inserted and positioning holes 823d and 823e are formed.
  • the resin plate J has a larger outer shape than the top surfaces 813a and 823a. As a result, gaps are formed between the lower step surfaces 813b and 823b and the resin plate J, as shown in FIG.
  • the stampers 813 and 823 are thus formed to have a convex section, and in particular, by having the concave and convex regions R on the top surfaces 813a and 823a, the pressing force that presses the stampers 813 and 823 against the resin plate J is increased. Since it concentrates on 823a, the concavo-convex pattern formed in the concavo-convex region R is reliably transferred to the resin plate J.
  • the outer shape of the resin plate J may be larger than the top surfaces 813a and 823a, or may be the same as the top surfaces 813a and 823a or smaller than the top surfaces 813a and 823a.
  • the stampers 813 and 823 are formed in a cross-sectional convex shape having the top surfaces 813a and 823a and the lower step surfaces 813b and 823b, so that the vacuum between the stampers 813 and 823 and the resin plate J is applied during vacuuming.
  • the degree can be increased and the pressing force can be concentrated on the top surfaces 813a and 823a, the following disadvantages also occur.
  • steps 813c and 823c are formed between the top surfaces 813a and 823a and the lower step surfaces 813b and 823b.
  • the resin plate J When the boundaries between the steps 813c and 823c and the top surfaces 813a and 823a are connected at right angles or acute angles, the resin plate J has a larger outer shape than the top surfaces 813a and 823a. Edges are formed at portions corresponding to the steps 813c and 823c of the resin plate J due to softening by heating J and solidification by cooling, and cracks are generated when the resin plate J is removed from the stampers 813 and 823 in a solidified state. May occur. Therefore, in this embodiment, the boundaries between the steps 813c and 823c and the top surfaces 813a and 823a are connected in an arc shape or a tapered shape as shown in FIG. Thereby, a circular arc or an obtuse angle is formed in the part corresponding to the level
  • a movable body that delays the contact between the resin plate J and the stampers 813 and 823 in the initial stage of evacuation (intake) It is interposed between the resin plate J and the stampers 813 and 823.
  • the movable body Prior to contacting the resin plate J and the stampers 813 and 823, the movable body sufficiently sucks the air interposed therebetween, and when the resin plate J and the stampers 813 and 823 come into contact with each other, For example, when the stamper 823 on the mounting portion 82 side is a stamper having a concavo-convex pattern, the bucket 80 is changed from the open state to the closed state while evacuation is started.
  • the movable body When changing, it is sufficient that the movable body operates so as to delay the timing at which the stamper 823 contacts the resin plate J in the initial stage of evacuation.
  • a spring 100 that urges J upward so as to separate J from the stamper 823 may be employed as the movable body.
  • the air interposed between them is sucked and the resin plate is delayed. Since J and the stampers 813 and 823 come into contact with each other, when the resin plate J and the stampers 813 and 823 come into contact with each other, no air layer is formed between them.
  • the degree of vacuum can be increased (transfer molding method by operation of a movable body).
  • a spring 100 that urges the resin plate J downward so as to be separated from the stamper 813 may be provided.
  • the movable body is not limited to the spring 100, and various parts can be applied in addition to an elastic member such as a damper for delaying the contact between the resin plate J and the stampers 813 and 823.
  • the resin plate J and the stamper 813 are applicable.
  • 823 can be provided as a movable member with a rod-like or plate-like member that can move forward and backward. In this case, evacuation is started when the bucket 80 is changed from the open state to the closed state, or when the bucket 80 is in the closed state, and at that timing, the rod-like or plate-like member is moved between the resin plate J and the stampers 813, 823.
  • the rod-like or plate-like member can move forward and backward using, for example, an electromagnetic solenoid, an air cylinder, a hydraulic cylinder, or the like as a power source.
  • such a movable body is interposed between the resin plate J and the stampers 813 and 823, and delay means for delaying the contact between the resin plate J and the stampers 813 and 823 in the initial stage of intake in the vacuum processing unit 20.
  • the delay means is not limited to a movable body, and includes various forms as described below.
  • the delay means can include small-diameter resin beads, convex portions formed on the resin plate J, and the like that can be interposed between the stampers 813 and 823. For example, when the resin beads are installed in advance between the resin plate J and the stampers 813 and 823 in the opened state of the bucket 80, the bucket 80 is changed from the opened state to the closed state while evacuation is started.
  • the resin beads delay the contact between the resin plate J and the stampers 813 and 823 in the initial stage of intake.
  • the resin beads may be a flexible or elastic resin, a resin of the same material that can be fused with the resin plate J by heating, or the like.
  • the convex portion and the resin plate J are stamped at the initial stage of intake. Contact with 813,823 is delayed.
  • the convex portion can be made of a flexible or elastic resin, a resin of the same material that can be fused with the resin plate J by heating, or the like, and a portion outside the uneven region R of the stampers 813 and 823 (for example, it is preferable to form at the four corners of the resin plate J.
  • the convex portion may be a general embossed one regardless of whether it is in the uneven region R or outside the uneven region R. Such resin beads and protrusions are fused with the resin plate J by heating in the heat treatment step (for example, the first heat treatment step), and thus do not hinder the formation of the uneven pattern.
  • the bucket 80 includes the lid portion 81 and the mounting portion 82, respectively, so that the resin plate J and the stampers 813 and 823 can be accommodated, and the vacuum between the resin plate J and the stampers 813 and 823 is configured.
  • the degree has been increased.
  • the stampers 813 and 823 and the resin plate J come into contact with each other without an air layer interposed therebetween, so that the concavo-convex pattern is accurately transferred to the resin plate J.
  • the bucket 80 is formed in a rectangular shape having a long side in the normal direction of a circle centered on the shaft 71.
  • the buckets 80 (80a to 80f) interfere with each other. Therefore, in the present embodiment, the buckets 80 are formed in a rectangular shape having a long side in the normal direction of the circle, and each bucket 80 can be extended as much as possible in the normal direction.
  • the resin plate J accommodated in the bucket 80 can also be formed in a rectangular shape that can be extended in the normal direction, and the number of products (yield) in the normal direction can be improved.
  • the processing unit and the bucket 80 are added, the angular interval is narrowed, but the bucket 80 can be extended along the normal direction while avoiding interference between the buckets 80, so that the product can be removed. The number (yield) can be secured.
  • the sending processing unit 10 and the sending processing unit 60 perform a feeding process (feeding process step) for feeding the resin plate J1 into the bucket 80 and a sending process (sending process step) for sending the resin plate J2 from the bucket 80.
  • Each processing unit is provided with transport devices 11 and 61 for transporting the resin plate J and arms 12 and 62 for taking the transported resin plate J into and out of the bucket 80.
  • the conveyance devices 11 and 61 are constituted by, for example, a belt conveyor, and convey the resin plate J placed on the belt.
  • the transport device 11 transports the resin plate J1 in the direction of the shaft 71, and the transport device 61 transports the resin plate J2 in the direction opposite to the shaft 71.
  • the arms 12 and 62 are configured to be able to advance and retreat along the conveying direction of the resin plate J, and have a pipe line connected to a predetermined vacuum pump inside.
  • the suction cups made of silicon By arranging the suction cups made of silicon at the locations corresponding to the four corners, the resin plates J (J1, J1, J) with respect to the buckets 80a, 80f are moved forward and backward along the transport direction while adsorbing the resin plates J to the suction cups. J2) can be taken in and out.
  • the arm 12 sucks the resin plate J1 transported by the transport device 11 to the suction cup, moves to the mounting portion 82 of the bucket 80a in the open state, and sucks after moving.
  • the lid portion 81 is lowered toward the placement portion 82 and the bucket 80 is closed, and the resin plate J1 is accommodated in the bucket 80 so as to overlap with the stampers 813 and 823.
  • the arm 62 takes out the resin plate J2 from the bucket 80f in the open state.
  • the resin plate J2 placed on the placement portion 82 of the bucket 80 in the open state is attracted to the suction cup and moved as it is to the transport device 61. After the movement, the suction is released and the resin plate J2 is moved to the transport device 61. Put it on.
  • the sending processing unit 10 that feeds the resin plate J1 into the bucket 80 and the sending processing unit 60 that sends the resin plate J2 from the bucket 80 are made independent so that each processing step is a separate step.
  • the processing time (tact time) in each processing unit is shortened, and the number of products (production amount) per unit time can be increased.
  • the vacuum processing unit 20 is a processing unit that performs vacuum processing (vacuum processing step) for sucking (evacuating) the inside of the bucket 80 that is in a closed state, and between the resin plate J and the stampers 813 and 823 by vacuuming. Processing to increase the degree of vacuum is performed. In the vacuum processing unit 20, evacuation is performed through the intake hole 827 formed in the bucket 80 described above. As shown in FIG. 4, the vacuum processing unit 20 includes a cover plate 21 (21a, 21b) capable of covering the bucket 80 from above and below, and sandwiches the bucket 80 in the closed state from above and below by the cover plates 21a and 21b. While inhaling. In FIG.
  • the bucket 80 b intermittently stopped at a position facing the cover plates 21 a and 21 b is in an open state. Stops intermittently.
  • the cover plates 21a and 21b are driven by, for example, an air cylinder so that the cover plate 21a can be raised and lowered with respect to the cover plate 21b.
  • the vacuum processing unit (vacuum processing step) of this embodiment is not limited to the vacuum processing unit 20 existing between the inflow processing unit 10 and the heat processing unit 30, but also from the vacuum processing unit 20 to the cooling processing unit 50. (The vacuum processing step is continuously performed).
  • each processing unit from the heat processing unit 30 to the cooling processing unit 50 is provided with a vacuum processing unit, and the vacuum processing steps are performed in parallel in each processing step.
  • the vacuum processing is preferably performed before the press processing (press processing step) for pressing at least the stampers 813 and 823 against the resin plate J is performed.
  • the heat processing units 30 and 40 are processing units that perform in parallel a heating process (heating process) for heating the bucket 80 and a pressing process (pressing process) for pressing the bucket 80, and heat the resin plate J. Then, the stamper 813, 823 is pressed. That is, the heat processing units 30 and 40 of the present embodiment operate not only as a heat processing unit that heats the bucket 80 but also as a press processing unit that presses the bucket 80. Further, the heat treatment unit 30 is a first heat treatment unit (first heat treatment step) that performs pressing while heating the resin plate J to a first heating temperature (for example, a surface temperature of the resin plate J of 130 ° C. to 140 ° C.).
  • a first heating temperature for example, a surface temperature of the resin plate J of 130 ° C. to 140 ° C.
  • the heat treatment unit 40 heats the resin plate J to a second heating temperature higher than the first heating temperature (for example, the surface temperature of the resin plate J is 170 ° C. to 250 ° C.) following the heat treatment unit 30. While operating as a second heat treatment unit (second heat treatment step) for pressing.
  • the heating temperature of the resin plate J is different between the heat treatment unit 30 and the heat treatment unit 40 because the heat treatment unit 30 preheats the stampers 813 and 823 while preliminarily heating the resin plate J. This is because the press processing is performed and the heat processing unit 40 performs the main heating / press processing of pressing the stampers 813 and 823 while fully heating the resin plate J.
  • the heat treatment units 30 and 40 include press plates 31 (31 a and 31 b) and 41 (41 a and 41 b) and a support plate 32 (32 a that attaches the press plates 31 and 41 by screwing.
  • 32b) and 42 (42a, 42b) are stacked, and the pressure bodies 33a, 43a positioned above are positioned below.
  • the bucket 80 is pressed against the bucket 80 while holding the bucket 80 between the pressure bodies 33a and 43a and the pressure bodies 33b and 43b. Heat treatment is performed.
  • the press plates 31a and 31b are made of a metal (for example, stainless steel, brass, or the like) plate member having thermal conductivity and flexibility, and as shown in FIG. 7, the exposed surfaces 812a of the sandwiching plates 812 and 822. , 822a and press surfaces 311a and 311b that pressurize and heat, and the press surfaces 311a and 311b are configured as flat surfaces having substantially the same outer shape as the exposed surfaces 812a and 822a, respectively.
  • the press plate 31 is screwed to the support plate 32 via screws 34.
  • the press plates 31a and 31b are configured as resistance heating plates, and transmit heat generated by energization to the exposed surfaces 812a and 822a via the press surfaces 311a and 311b.
  • a plurality of heating wires 321 to 325 (eg, nichrome wires) are embedded in the press plate 31, and Joule heat is generated by applying a direct current to heat the entire press plate 31.
  • the heating wires 321a to 325a and 321b to 325b of the press plates 31a and 31b are formed of independent heating wires and are configured to be able to apply different values of current, and the amount of heat generated can be set for each of the heating wires 321a to 325a and 321b to 325b. It can be controlled.
  • the press plates 31a and 31b can have different heating temperatures depending on the portion where the heating wires 321a to 325a and 321b to 325b are embedded, and the heating processing unit 30 can increase the heating temperature for the peripheral edge of the bucket 80 from the center.
  • the heating processing unit 30 can increase the heating temperature for the peripheral edge of the bucket 80 from the center.
  • variable means for each set temperature region that can be set to a high temperature.
  • the heat generation distribution of the press surfaces 311a and 311b also shows a distribution corresponding to the amount of heat generated by the heating wires 321a to 325a and 321b to 325b. As described above, by making it possible to adjust the heat generation amount of the press surfaces 311a and 311b for each part, the following effects are exhibited.
  • FIG. 8 shows the set temperature (marked with ⁇ in the figure) for each part where the heating wires 321 to 325 of the heat treatment unit 30 are embedded and the resin temperature of the resin plate J (marked with ⁇ in the figure, hereinafter referred to as surface temperature). It is a graph which shows a relationship, (a) is a graph which shows the surface temperature of the resin board J when the preset temperature according to site
  • the surface temperature of the resin plate J is the center temperature.
  • the peripheral portion portion corresponding to the heating wires 321 and 325) is lower than the vicinity (portion corresponding to the heating wires 322 to 324).
  • the surface temperature near the center shows 195 ° C.
  • the peripheral portion corresponding to the heating wire 321 shows 180 ° C.
  • the peripheral portion corresponding to the heating wire 325 shows 170 ° C.
  • the surface temperature of the peripheral portion is the center. It is 15-25 ° C lower than the vicinity. If pressing is performed with such temperature unevenness, bubbles may be generated in some places, or transfer unevenness may occur between the center and the peripheral portion, so that the uneven pattern cannot be accurately transferred. was there.
  • the heat treatment unit 30 includes variable means for each set temperature region that makes the set temperature variable for each of the heating wires 321 to 325, and the heating temperature of the resin plate J is set so that the peripheral portion is higher than the vicinity of the center. .
  • the set temperature of the heating wires 322 to 324 corresponding to the vicinity of the center of the resin plate J is set to, for example, 190 ° C.
  • the heating wires 321 corresponding to the peripheral portion of the resin plate J are provided.
  • the set temperature of 325 was set higher than this, for example, 215 ° C.
  • the surface temperature near the center of the resin plate J indicates 205 ° C.
  • the surface temperature of the peripheral portion corresponding to the heating wire 321 is 195 ° C.
  • the surface temperature of the peripheral portion corresponding to the heating wire 325 is 200 ° C.
  • the difference between the surface temperature of the peripheral portion and the surface temperature near the center could be reduced to within 10 ° C.
  • the resin plate J is heated evenly, and the uneven pattern can be accurately transferred without causing uneven transfer between the vicinity of the center and the peripheral portion.
  • a method for changing the heat generation distribution of the press surfaces 311a and 311b can be realized by changing each resistance value while keeping the voltage applied to the heating wires 321a to 325a and 321b to 325b at the same voltage.
  • the distances from the heating wires 321a to 325a and 321b to 325b to the press surfaces 311a and 311b while the voltages applied to the heating wires 321a to 325a and 321b to 325b are the same voltage and the resistance values are the same.
  • the heat distribution of the press surfaces 311a and 311b can also be changed by changing (for example, the depth at which the nichrome wire is embedded).
  • the heat treatment unit 30 configured in this way is configured such that an upper pressure body 33 a is driven by, for example, a hydraulic cylinder and can be moved up and down with respect to the pressure body 33 b.
  • the bucket 80c in the closed state is intermittently stopped at a position facing the pressurizing bodies 33a and 33b, the heating process and the press process are performed while the bucket 80c is sandwiched between the pressurizing body 33a and the pressurizing body 33b.
  • the bucket 80c which is evacuated in the vacuum processing unit 20 and is intermittently stopped at a position facing the pressurizing bodies 33a and 33b, is lowered, the pressurizing body 33a is lowered and added to the pressurizing body 33a.
  • pressing is performed at 6 MPa while the bucket 80c is sandwiched between the pressure body 33b.
  • the press surfaces 311a and 311b press the exposed surfaces 812a and 822a without pressing the frames 811 and 821, respectively.
  • heat having a temperature gradient for each region is transmitted to the exposed surfaces 812a and 822a through the press surfaces 311a and 311b.
  • the resin plate J is heated by heat transmitted through the sandwiching plates 812 and 822 and the stampers 813 and 823, the surface thereof is softened, and the stampers 813 and 823 are pressed by the press.
  • the pressure body 33a rises and the bucket 80b in the closed state rotates and moves toward the heat treatment unit 40.
  • the heat processing unit 40 performs the same operation as the heat processing unit 30 although the set temperature of the press plate 41 is different from that of the press plate 31.
  • the resin plate J is pressed for about 30 to 90 seconds while being preheated to the first heating temperature (for example, the surface temperature of the resin plate J is 130 ° C. to 140 ° C.).
  • the resin plate J is pressed for about 30 to 90 seconds while being fully heated to a second heating temperature higher than the first heating temperature (for example, the surface temperature of the resin plate J is 170 ° C to 250 ° C). I do.
  • These heating temperatures are such that the first heating temperature is lower than the glass transition temperature of the resin plate J (preferably a temperature lower by 5 to 15 ° C. than the glass transition temperature), and the second heating temperature is equal to or higher than the glass transition temperature (preferably glass 25 to 105 ° C. higher than the transition temperature).
  • the glass transition temperature is about 145 ° C.
  • the first heating temperature is lower than the glass transition temperature (145 ° C.), for example, 130 ° C. to 140 ° C.
  • the second heating temperature is not lower than the glass transition temperature (145 ° C.) and can be set to 170 ° C. to 250 ° C., for example.
  • the dispersion of the heat treatment is not limited to the heat treatment unit 30 and the heat treatment unit 40, and at least one continuous heat treatment unit 30 including the treatment unit immediately before the heat treatment unit 30 is reached.
  • the preheat treatment for preheating the bucket 80 or the resin plate J can be performed in parallel.
  • the cover plates 21 a and 21 b are configured as resistance heating plates in the same manner as the press plates 31 and 41, and the air in the bucket 80 is sucked in.
  • the cover plate 21a and the cover plate 21b are brought into contact with the exposed surfaces 812a and 822a, respectively, so that the resin plate J in the bucket 80 is preliminarily disposed. It is also possible to heat (for example, the surface temperature of the resin plate J is 80 ° C.). Furthermore, in addition to the vacuum processing unit 20, the resin plate J can be preheated in the infeed processing unit 10. That is, the bucket 80 or the resin plate J is heated in advance in the vacuum processing unit 20 and the infeed processing unit 10 that are two or more other processing units that are continuous up to the heat processing unit 30.
  • a heater and a resistance heating plate may be provided in the lower part of the transport device 11, and the resin plate J transported in the direction of the axis 71 may be preheated (for example, the surface temperature of the resin plate J is 40 ° C.). .
  • the heating time in the heat processing units 30 and 40 is dispersed in the vacuum processing unit 20 and the infeed processing unit 10, and the processing time (tact time) is further shortened, and the number of productions per unit time (production amount). Can be increased.
  • the first heating temperature and the second heating temperature are the respective heating temperatures with the temperature at which the resin plate J is changed to a glass state in the heat treatment unit 30 and a rubber state by slight heating in the heat treatment unit 40 as a reference temperature.
  • the heat processing units 30 and 40 use at least one of the pressing force for pressing the stampers 813 and 823 against the resin plate J and the transmission start position of the pressing force as the stamper 813.
  • 823 and the resin plate J are provided with press part variable means (press part variable step) for changing according to the contact part.
  • 311b are not necessarily parallel to each other without unevenness, and the stampers 813 and 823 are not evenly pressed against the resin plate J with respect to the surface direction. For each contact portion between the stampers 813 and 823 and the resin plate J In some cases, the press unevenness in which a portion having a high pressing force and a portion having a low pressing force are distributed in a mottled manner may occur. Therefore, the press plate 31 is screwed to the support plate 32 so that a thin plate 110 (shim plate) made of a metal plate member can be inserted between the press plate 31 and the support plate 32.
  • a thin plate 110 shim plate
  • the screw 34 is loosened and the thin plate 110 is inserted into a location corresponding to the contact portion where the pressing force is insufficient, and the screw 34 is tightened to clamp the thin plate 110 between the press plate 31 and the support plate 32.
  • the thin plate 110 functions as a press part variable means, and due to the flexibility of the press plate 31, the vicinity of the insertion part protrudes compared to other parts, and the pressing force of the contact part can be increased. It is possible to eliminate the press unevenness efficiently (press part variable step). Note that by preparing a plurality of types of thin plates 110 having different thicknesses and sizes (outer shapes), complicated press unevenness can be eliminated.
  • the press surfaces 311a and 311b corresponding to the insertion locations first come into contact with the exposed surfaces 812a and 822a, so that the transmission start position of the press force can be changed.
  • the thin plate 110 is caused to function as a pressing portion variable means, and the pressing force near the center of the resin plate J is first increased. It is also possible to adjust (press part variable step).
  • such a press treatment is performed in the heat treatment unit 30 while preliminarily heating the resin plate J to a temperature lower than the glass transition temperature (for example, the surface temperature of the resin plate J is 130 ° C. to 140 ° C.).
  • the resin plate J is heated while being fully heated to the glass transition temperature or higher (for example, the surface temperature of the resin plate J is 170 ° C. to 250 ° C.).
  • the press operation is performed by the heat treatment unit 30 before the heat treatment is performed by the heat treatment unit 40 in earnest, thereby exhibiting the following effects.
  • the resin plate J When the glass transition temperature is reached, the resin plate J is softened into a rubber shape by the glass transition. At this time, since the resin plate J is in contact with the stampers 813 and 823 while having fluidity (viscosity), even if an air layer is interposed between the resin plate J and the stampers 813 and 823, the air layer Is moved toward the peripheral edge by the press process, but its escape is blocked by its viscosity, and it is confined without being pushed out between the resin plate J and the stampers 813 and 823.
  • fluidity viscosity
  • the air layer is interposed between the resin plate J and the stampers 813 and 823, and the glass transition temperature or higher (for example, the surface temperature of the resin plate J is 170 to 250 ° C.)
  • the heat treatment unit 30 performs the press process while preliminarily heating the resin plate J to a temperature lower than the glass transition temperature (for example, the surface temperature of the resin plate J is 130 ° C. to 140 ° C.).
  • the resin plate J since the resin plate J is in a glass state below the glass transition temperature and has not yet been softened, even if an air layer is interposed between the resin plate J and the stampers 813, 823, Without being in a confined state, it can be driven out by the press process or the above-mentioned press part variable means. Thereby, before heating the resin plate J in earnest, the air layer can be surely expelled from between the resin plate J and the stampers 813 and 823.
  • the first heat treatment for preliminarily heating the resin plate J is performed as a press treatment (press treatment step) for the purpose of expelling the air layer from between the resin plate J and the stampers 813 and 823.
  • the press process (press process process) for the purpose of expelling the air layer can be performed after the vacuum process (vacuum process process) and before the first heat treatment process.
  • the press process (press process step) for the purpose of transferring the concavo-convex pattern is at least a heat process (heat process step) after heating the resin plate J in earnest, that is, the second heat process as in this embodiment. It can also be performed in parallel with the process, and is a process step after the heat treatment (second heat treatment step) for full-scale heating, and at least before the feed process step (send processing unit 60) (for example, , A cooling process step).
  • the cooling processing unit 50 is a processing unit that performs a cooling process (cooling process) for cooling the bucket 80, fixing the uneven pattern thermally transferred in the heating processing unit 40 while taking heat away from the heated resin plate J. Solidify.
  • the cooling processing unit 50 includes a cooling body 51 (51 a, 51 b) that cools the bucket 80 while sandwiching the bucket 80 from the vertical direction.
  • the cooling bodies 51a and 51b have cooling surfaces 519a and 519b facing the sandwiching plates 812 and 822, and are driven by, for example, an air cylinder so that the cooling body 51a can be raised and lowered with respect to the cooling body 51b.
  • the cooling bodies 51a and 51b are each made of a metal (for example, stainless steel, brass, etc.) thick plate member (for example, 80 mm) having thermal conductivity, and as shown in FIG. A plurality of conduits 511a to 518a and 511b to 518b that can flow in and out are provided.
  • the pipes 511a to 518a and 511b to 518b are connected to the odd-numbered pipes and the even-numbered pipes inside the cooling bodies 51a and 51b.
  • the water inlet and the even-numbered side are formed as a substantially U-shaped pipe line serving as a cooling water outlet.
  • the pipes 511a to 518a and 511b to 518b as substantially U-shaped pipes, the cooling water inlet and outlet can be concentrated on one end face of the cooling bodies 51a and 51b. This makes it easy to check for leakage of cooling water.
  • the inflow / outflow port is disposed on the side surface opposite to the shaft 71 on one end surface other than the surface facing the shaft 71 so as not to interfere with the rotating bucket 80.
  • the inflow / outlet is rotationally moved even if it is disposed on one end surface of the cooling bodies 51a and 51b other than the surface facing the shaft 71 and parallel to the normal direction of the circle centering on the shaft 71. It is possible to prevent the bucket 80 from interfering.
  • the pipes 511a to 518a and 511b to 518b are piped at equal intervals to the cooling surfaces 519a and 519b of the cooling bodies 51a and 51b, respectively, and uniformly cool the cooling surfaces 519a and 519b contacting the exposed surfaces 812a and 822a, respectively. It is supposed to be.
  • the U-shaped portions 510a to 510d of the ducts 511a to 518a and 511b to 518b are extended outward from the end surfaces (axial side surfaces) of the cooling bodies 51a and 51b. Accordingly, the pipes 511a to 518a and 511b to 518b in the cooling bodies 51a and 51b can be formed as through holes that can be penetrated by a drill or the like, so that the manufacturing of the cooling bodies 51a and 51b is facilitated. Can be reduced.
  • an open / close valve (not shown) may be provided on the inlet side of each of the pipelines 511a to 518a and 511b to 518b so that the flow rate of the cooling water can be adjusted for each pipeline.
  • the cooling rate can be made uniform by adjusting the flow rate of the pipe line corresponding to the vicinity of the center to be larger than the flow rate of the pipe line corresponding to the peripheral portion.
  • the cooling processing unit 50 when integrally provided with a press processing unit to cool the bucket 80e between the cooling body 51a and the cooling body 51b, the clamping plates 812 and 822 may be pressed from above and below. it can. That is, the pressing process can be performed in parallel with the cooling process.
  • the cooling body 51a and the cooling body 51b are each configured as a press plate, and when the bucket 80e is sandwiched between the cooling body 51a and the cooling body 51b, the cooling surfaces 519a and 519b press the frames 811 and 821.
  • the exposed surfaces 812a and 822a can be pressed respectively. Thereby, since the flow of the resin softened in a rubber shape by glass transition in the heat treatment unit 40 is suppressed, the fixability of the uneven pattern is improved.
  • the transfer molding apparatus 1 configured as described above includes a central processing unit (CPU), a ROM, a RAM, an interface circuit, and the like, and a control unit (not shown) operating as a computer performs an infeed processing unit 10 and a vacuum processing unit. 20, the heat processing units 30 and 40, the cooling processing unit 50, the delivery processing unit 60, and the intermittent rotation unit 70 are controlled, and the above-described processes are performed for the different buckets 80a to 80f. This is performed during one stop of the same period, and one bucket 80 makes a round of the processing units 10 to 60 as shown below, so that the primary molded resin plate J1 is automatically fed. At the same time, a transfer molding method is realized in which the resin plate J2 which is a secondary molded product obtained by transfer molding of the concavo-convex pattern is automatically sent out.
  • the six buckets 80 are respectively supported by the intermittent rotation unit 70, and each process is performed by alternately performing rotation (clockwise) in units of about 60 degrees and stopping while performing an opening / closing operation according to a position on the circumference. It is moved over the sections 10-60.
  • the bucket 80 In the infeed processing unit 10, the bucket 80 is intermittently stopped in the open state, and the resin plate J ⁇ b> 1 is automatically fed into the bucket 80 by the cooperative operation of the transport device 11 and the arm 12 (infeed processing step). Accordingly, the resin plate J1 is accommodated in the bucket 80 so as to overlap with the stampers 813 and 823.
  • the intermittent rotation portion 70 rotates about 60 degrees when the fed resin plate J1 is detected by a detection means such as an optical sensor, and the lid portion 81 is lowered toward the placement portion 82 and the bucket 80 is closed. Then stop. At this time, even if the feeding processing unit 10 detects the feeding of the resin plate J1, the intermittent rotating unit 70 does not rotate unless the processing in the other processing units 20 to 60 is completed. That is, the intermittent rotation unit 70 performs an intermittent stop according to the processing time in any of the processing units 10 to 60 that performs the longest processing in time. For example, when the processing time in the heat processing units 30 and 40 is set longer than the processing time of the other processing units, the heat processing units 30 and 40 are detected even after the feeding of the resin plate J1 is detected.
  • Rotation of about 60 degrees is started after intermittent stop according to the processing time.
  • each process in each of the processing units 10 to 60 is reliably performed while performing different processes in a distributed manner, and each processing unit is stopped during the same period when the intermittent rotation unit 70 is stopped.
  • Each processing in 10 to 60 is performed for different buckets 80a to 80f at a time.
  • the bucket 80 is intermittently stopped in the closed state, and is sucked in through the suction holes 827 while being sandwiched from above and below by the cover plates 21a and 21b (vacuum processing step).
  • the movable body for example, the spring 100
  • the movable body operates so as to delay the timing of the stampers 813 and 823 that come into contact with the resin plate J, so that there is a gap between the resin plate J and the stampers 813 and 823.
  • the degree of vacuum can be increased.
  • the intermittent rotation unit 70 starts rotating at about 60 degrees after a predetermined time has elapsed (for example, after the processing time of the heat processing units 30 and 40 has elapsed), but the intake air through the intake hole 827 does not open the bucket 80. It continues until it reaches a state (until it reaches the sending processing unit 60).
  • the bucket 80 is intermittently stopped in the closed state, and is heated and pressed preliminarily (less than the glass transition temperature) while being sandwiched from above and below by the pressure bodies 33a and 33b (first heat treatment). Process).
  • the resin plate J is preliminarily heated uniformly by the variable means for each set temperature region without causing unevenness in the temperature distribution between the vicinity of the center and the peripheral portion.
  • the press part varying means eliminates press unevenness in which a portion with a high pressing force and a portion with a low pressing force are distributed, and an air layer interposed between the stampers 813 and 823 and the resin plate J is changed from the central portion to the peripheral portion.
  • the intermittent rotation unit 70 starts rotating about 60 degrees after a predetermined time has elapsed (for example, after the processing time of the heat processing units 30 and 40 has elapsed).
  • the bucket 80 is intermittently stopped in the closed state, and is heated and pressed in earnest (above the glass transition temperature) while being sandwiched from above and below by the pressurizing bodies 43a and 43b (second heat treatment step). .
  • the resin plate J is softened into a rubber shape, and the uneven pattern of the stampers 813 and 823 is transferred.
  • uniform heating and pressing in the surface direction and expulsion of the air layer are performed by the variable means for each set temperature part and the press part variable means.
  • the intermittent rotation unit 70 starts rotating about 60 degrees after a predetermined time has elapsed (for example, after the processing time of the heat processing units 30 and 40 has elapsed).
  • the bucket 80 is intermittently stopped in the closed state, and is cooled while being sandwiched from above and below by the cooling bodies 51a and 51b (cooling processing step). As a result, it is possible to fix and solidify the concavo-convex pattern thermally transferred in the heat treatment unit 40 while removing heat from the resin plate J. Further, at this time, the bucket 80 can be pressed from above and below in order to suppress the flow of the resin softened in a rubber shape. Thereafter, the intermittent rotation unit 70 starts rotating about 60 degrees after a predetermined time has elapsed (for example, after the processing time of the heat processing units 30 and 40 has elapsed).
  • the bucket 80 is intermittently stopped in the open state, and the resin plate J2 on which the uneven pattern is transferred is automatically delivered from the bucket 80 by the cooperative operation of the transport device 61 and the arm 62 ( Sending process).
  • one bucket 80 includes the infeed processing unit 10 (infeed processing step), the vacuum processing unit 20 (vacuum processing step), and the heating processing unit. 30 and 40 (first and second heat treatment steps), the cooling processing unit 50 (cooling processing step), and the delivery processing unit 60 (delivery processing step) make a round so that the primary molded resin plate J1 is automatically
  • one resin plate J2 is manufactured every time the intermittent rotation unit 70 rotates about 60 degrees.
  • the time required to heat the resin plate J at room temperature to a certain temperature and then radiate heat is reduced. Since it is difficult to do so, such dispersion of processing leads to shortening of processing time while improving heating and cooling efficiency, and can increase the number of production (production amount) per unit time.
  • the vacuum processing unit 20 is physically provided independently. However, the vacuum processing performed through the intake holes 827 is performed in the processing units of the heating processing units 30 and 40 and the cooling processing unit 50. Since the processes are performed in parallel with the respective processes, the vacuum processing unit 20 can be deleted. In this case, evacuation is started from the heat treatment unit 30, but a movable body (for example, a spring 100) is provided in the heat treatment unit 30, and the resin plate J and the stampers 813 and 823 It is preferable to perform the heating / pressing treatment after increasing the degree of vacuum.
  • the heat processing units 30 and 40 and the cooling processing unit 50 are provided with the press processing unit, but may be provided only in the cooling processing unit 50. As described above, the incoming processing unit 10, the heating processing units (30, 40), the cooling processing unit 50, and the outgoing processing unit 60 need to be provided independently of the processing units included therein.
  • the press processing unit and the vacuum processing unit can be provided together with these.
  • a plurality of heat treatment units are provided, but only one heat treatment unit may be provided. Further, the heating temperature of the heat treatment unit 30 and the heat treatment unit 40 may be the same temperature.
  • the stampers 813 and 823 can be provided with the concavo-convex region R on both top surfaces, or can be provided with the concavo-convex region R only on one top surface and a mirror surface on the other top surface.
  • the processing units 10 to 60 are moved clockwise in the order of the in-feed processing unit 10, the vacuum processing unit 20, the heating processing unit 30, the heating processing unit 40, the cooling processing unit 50, and the sending processing unit 60.
  • the sending processing unit 60, the cooling processing unit 50, the heating processing unit 40, the heating processing unit 30, the vacuum processing unit 20, and the feeding processing unit 10 are arranged clockwise in this order, and the intermittent rotation unit 70 includes each bucket 80. Can also be rotated counterclockwise.
  • the transfer molding apparatus and the transfer molding method as the transfer molding apparatus and the transfer molding method, the plurality of buckets in which the stamper having the resin plate and the concave / convex pattern is rotated rotate around the axis, and the stamper is pressed against the resin plate to form the concave / convex pattern.
  • a rotary type transfer molding device and transfer molding method for transfer molding to a resin plate are adopted, the transfer molding device and the transfer molding method are not limited to this, and a stamper is pressed against the resin plate to transfer the uneven pattern to the resin plate.
  • Any transfer molding apparatus and transfer molding method having the configuration and method for achieving the above can be included in the transfer molding apparatus and the transfer molding method of the present invention.
  • the resin plate J2 on which the concavo-convex pattern is transferred is not only a light guide plate that emits light by light incident from the peripheral portion but also an optical product such as a prism sheet or a lenticular lens sheet.
  • the present invention can be suitably used for a transfer molding apparatus and a transfer molding method in which a stamper having a concavo-convex pattern is pressed against a primary molded resin plate, and the concavo-convex pattern of the stamper is transferred to the resin plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

La présente invention se rapporte à un dispositif de moulage par transfert qui comprend un godet (80) qui contient une plaque de résine (J) et un poinçon (823) ayant un motif irrégulier (une région irrégulière (R)) qui sont placés l'un sur l'autre, ainsi qu'une unité de traitement sous vide qui aspire l'air du godet (80), le poinçon (823) étant pressé contre la plaque de résine (J) pour transférer le motif irrégulier à la plaque de résine (J). Le poinçon (823) est configuré pour comprendre une rainure de fuite d'air (8231) sous la forme d'un moyen de formation de trajet d'écoulement d'évacuation destiné à former un trajet d'écoulement qui permet l'évacuation de l'air situé entre le poinçon (823) et la plaque de résine (J) même lorsque le poinçon (823) est en contact avec la plaque de résine.
PCT/JP2013/005615 2012-10-01 2013-09-24 Dispositif de moulage par transfert et procédé de moulage par transfert WO2014054240A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012-219814 2012-10-01
JP2012-219818 2012-10-01
JP2012219818A JP2016000456A (ja) 2012-10-01 2012-10-01 転写成形装置及び転写成形方法
JP2012219814A JP2016000455A (ja) 2012-10-01 2012-10-01 転写成形装置

Publications (1)

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WO2014054240A1 true WO2014054240A1 (fr) 2014-04-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117429120A (zh) * 2023-12-20 2024-01-23 福建福碳新材料科技有限公司 一种三代半导体用等静压石墨治具散热台

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120810A1 (fr) * 2004-06-14 2005-12-22 Bionics Corporation Système de nano-impression
WO2007083725A1 (fr) * 2006-01-23 2007-07-26 Pioneer Corporation Filière de transfert d’impression, procédé de transfert d’impression, imprimante, procédé de fabrication de filière de transfert d’impression, et matière de transfert d’impression
WO2010095402A1 (fr) * 2009-02-17 2010-08-26 出光ユニテック株式会社 Procédé et appareil pour fabriquer un élément optique ayant une forme de surface
JP2012179839A (ja) * 2011-03-02 2012-09-20 Yasuda Koki Kk 熱転写成形ユニット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120810A1 (fr) * 2004-06-14 2005-12-22 Bionics Corporation Système de nano-impression
WO2007083725A1 (fr) * 2006-01-23 2007-07-26 Pioneer Corporation Filière de transfert d’impression, procédé de transfert d’impression, imprimante, procédé de fabrication de filière de transfert d’impression, et matière de transfert d’impression
WO2010095402A1 (fr) * 2009-02-17 2010-08-26 出光ユニテック株式会社 Procédé et appareil pour fabriquer un élément optique ayant une forme de surface
JP2012179839A (ja) * 2011-03-02 2012-09-20 Yasuda Koki Kk 熱転写成形ユニット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117429120A (zh) * 2023-12-20 2024-01-23 福建福碳新材料科技有限公司 一种三代半导体用等静压石墨治具散热台
CN117429120B (zh) * 2023-12-20 2024-03-05 福建福碳新材料科技有限公司 一种三代半导体用等静压石墨治具散热台

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