WO2013051162A1 - 成形装置および成形方法 - Google Patents
成形装置および成形方法 Download PDFInfo
- Publication number
- WO2013051162A1 WO2013051162A1 PCT/JP2011/076877 JP2011076877W WO2013051162A1 WO 2013051162 A1 WO2013051162 A1 WO 2013051162A1 JP 2011076877 W JP2011076877 W JP 2011076877W WO 2013051162 A1 WO2013051162 A1 WO 2013051162A1
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- WIPO (PCT)
- Prior art keywords
- base material
- sheet
- jig
- blade
- trimming
- Prior art date
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Classifications
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C51/16—Lining or labelling
-
- 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
- B29C51/32—Moulds having cutting 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
- B29C51/42—Heating or cooling
- B29C51/428—Heating or cooling of moulds or mould parts
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
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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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
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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
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
Definitions
- the present invention relates to a molding apparatus and a molding method for thermoforming a sheet and bonding it to a substrate.
- a vacuum press lamination molding apparatus is known as an apparatus for adhering a sheet (skin sheet) to the outer surface of a molding substrate (see, for example, Patent Document 1).
- This vacuum press lamination molding apparatus has the following problems.
- the heating method is radiant heating in the chamber, and this heating causes elongation due to the softening of the sheet. Therefore, it is necessary to suppress sagging due to this elongation. Therefore, the vacuum pressure in the upper and lower chambers is adjusted to maintain the horizontal state of the sheet.
- the temperature distribution on the entire sheet surface becomes non-uniform. Therefore, reliable molding and adhesion cannot be obtained, and stable quality cannot be obtained. Furthermore, the positional deviation of the printing sheet with respect to the substrate shape occurs.
- thermoforming apparatus using hot plate heating has been provided (see Patent Document 2) as a solution to such a problem of the vacuum press lamination molding apparatus.
- the thermoforming apparatus includes a lower frame having a space capable of accommodating a base material, and a hot plate capable of bringing a heating surface into close contact with the upper edge of the lower frame, the lower frame and the hot plate, A thermoforming device by placing a sheet between them and thermoforming the sheet to mold or bond it to the base material by hot plate heating, wherein the lower frame has the upper edge on the frame A decompression unit capable of fixing the sheet and decompressing the space below the sheet is provided, and the heating plate includes a decompression unit that sucks the heating surface side, and a heating unit that heats the heating surface.
- thermoforming apparatus Means for releasing or pressurizing the heating surface to the atmosphere, and performing adsorption / heating control by the heat plate in a state where the lower frame and the heat plate are in close contact with the sheet interposed therebetween Means, pressure reduction control means for performing pressure reduction operation in the space below the sheet, and the suction
- the adsorption / heating operation by the heating control means and the decompression operation by the decompression control means are performed in parallel, the adsorption / heating operation is stopped after a predetermined time from the start of these operations, and the atmosphere between the hot plate and the sheet is opened to the atmosphere.
- Molding operation control means for performing or pressurizing According to this thermoforming apparatus, high-quality molding can be realized regardless of the base material shape, the printing sheet can be well aligned with the base material shape, and the molding cycle is further improved. The time can be shortened and the molding efficiency can be improved.
- the sheet that is coated and adhered to the substrate usually has a sufficient size compared to the substrate. Therefore, after adhesion to the base material, it is necessary to trim the sheet to remove an extra portion extending from the base material.
- the sheet is usually provided with an adhesive layer, and the sheet is bonded to the substrate by the adhesive layer.
- the sheet to be coated and adhered to the substrate is usually provided with an adhesion layer, and the sheet is adhered to the substrate by this adhesion layer.
- This sheet is usually formed in a sufficient size compared to the base material in order to improve the appearance of the molded product obtained and to further increase the adhesion to the base material, and a part of the base material It is wound on the bottom and bonded. Then, trimming of the sheet is performed outside the part adhered to the bottom surface, and the extra part extending from the base material is removed.
- the process of winding and bonding the sheet to the bottom surface of the base material is performed by blowing compressed air on the sheet positioned on the bottom surface of the base material. Yes.
- the sheet cannot be sufficiently pressed against the bottom surface of the substrate, and therefore, the adhesion of the sheet to the bottom surface of the substrate is inadequate, and there is a possibility that peeling occurs partially.
- a thermal shock test of about ⁇ 30 ° C. to + 80 ° C. may be performed to check whether or not the sheet is peeled off. When this is performed, the sheet adhered to the edge part (peripheral part) on the bottom surface of the substrate may be peeled off.
- the adhesive layer of the extra portion of the sheet extending from the base material during transfer adheres to the hands, other jigs, and devices, so the handling is very poor and the productivity is low. It will be greatly damaged. That is, if the adhesive layer adheres to hands, other jigs, devices, etc., it takes time to peel it off. Moreover, when an excessive force is applied at the time of peeling, the sheet may be peeled off from the substrate or the sheet may be damaged. In order to prevent the adhesive layer from adhering to hands, other jigs, devices, etc., if the adhesive layer is sufficiently cured, it is transferred to another device. Cannot be done.
- the present invention has been made in view of the above circumstances, and a first object of the invention is to provide a molding apparatus and a molding method in which inconvenience at the time of trimming is eliminated and productivity is improved.
- a second object is to provide a molding apparatus and a molding method that increase the adhesive strength of a sheet that adheres to the bottom surface of a substrate, prevent its peeling, and improve productivity.
- the molding apparatus includes: a base material jig provided on a base; and a sheet having an adhesive layer coated on the base material held on the base material jig.
- the substrate is bonded to the substrate because the substrate is bonded to the substrate because the substrate is bonded to the substrate without removing the substrate from the substrate jig. Therefore, it is not necessary to remove the sheet from the tool and transport it, so that the adhesive layer of the extra portion of the sheet extending from the base material is prevented from adhering to the hand, other jigs, and devices. That is, since the extra portion of the sheet extending from the base material is usually bonded to the base material jig, the exposure of the adhesive layer is suppressed, and therefore, the extra portion of the adhesive layer of the extra portion of the sheet is removed by hand or other treatment. Bonding to tools and devices is suppressed.
- the base material jig has a side peripheral surface extending from an outer peripheral surface of the base material such that an outer peripheral portion of the base material extends outward from a side peripheral surface of the base material jig.
- the blade is formed to be smaller than the base so as to be inside, and the trimming means includes a blade provided to face the bottom surface of the outer peripheral portion of the base that extends outward from the side peripheral surface of the base jig.
- the apparatus further comprises moving means for moving the base material jig and the blade relative to each other so that the bottom surface of the outer peripheral portion of the base material and the blade can be moved toward and away from each other. In this way, the base material jig and the blade for holding the base material to which the sheet is bonded are moved relative to each other by the moving means, and the sheet is trimmed easily and reliably by cutting the sheet. Can do.
- the blade is preferably provided on the base. In this way, after the sheet is bonded to the base material, trimming can be performed in that state without moving the base material jig.
- the moving unit includes a biasing unit that biases the base material jig in a direction in which the base material held on the base material jig is separated from the blade, and the base material It is preferable to include a pressing unit that presses the base material held on the jig in a direction in contact with the blade. If it does in this way, trimming of a sheet
- the pressing means may be configured using air pressure, or may include a pressing jig and a pressing mechanism that presses the pressing jig. .
- the base material jig can be pressed together with the base material while the base material jig is held in the base material jig, and the base material can be moved in the direction of contact with the blade. Trimming can be performed easily and reliably.
- the trimming means includes a side peripheral surface of the base material or the base material jig, or a blade provided to face between the side peripheral surfaces; It is preferable to include a base jig, or advancing / retreating means for advancing / retreating between them. In this way, the sheet can be trimmed easily and reliably by advancing and retracting the blade toward the base material or the base material jig or between them by the advancing / retreating means and cutting the sheet.
- the molding method according to the first aspect of the present invention includes a holding step of holding a base material on a base material jig, an adhesion step of covering and bonding a sheet having an adhesive layer on the base material, and the base material to which the sheet is bonded. A trimming step of trimming the sheet in that state without removing it from the base jig.
- the substrate is bonded to the substrate because the substrate is bonded to the substrate because the substrate is trimmed in that state without removing the substrate from the substrate jig. Therefore, it is not necessary to remove the sheet from the tool and transfer it, and therefore, it is possible to prevent the adhesive layer of the extra portion of the sheet extending from the base material from adhering to a hand, another jig, or an apparatus.
- the side peripheral surface of the base material jig is made of the base material so that the outer peripheral portion of the base material extends outside the side peripheral surface of the base material jig.
- the base material jig is made to hold the base material so as to be inside the outer peripheral surface, and in the trimming step, the bottom surface of the outer peripheral portion of the base material extends outward from the side peripheral surface of the base material jig. It is preferable to perform trimming by cutting the sheet adhered on the bottom surface by moving the blades provided facing each other relative to the bottom surface of the outer peripheral portion of the base material. In this way, by moving the blade relatively to the bottom surface of the outer peripheral portion of the base material held by the base material jig, and cutting the sheet adhered on the bottom surface, the sheet can be easily trimmed and It can be done reliably.
- the base material or the base material jig is provided with a side peripheral surface, or a blade provided facing the side peripheral surface, the base material or the base material jig.
- a molding apparatus is a molding apparatus that covers and adheres a sheet having an adhesive layer to a substrate, the substrate jig provided on a base and holding the substrate, An adhesive means for adhering a sheet having an adhesive layer coated on the base material held on the base material jig to the base material, wherein the base material jig is an outer peripheral portion of the base material Is formed smaller than the base material so that the side peripheral surface is on the inner side than the outer peripheral surface of the base material so as to extend outward from the side peripheral surface of the base material jig.
- a pressing portion is provided opposite to the bottom surface of the outer peripheral portion of the base material that extends outward from the side peripheral surface of the base material jig, and the base material and the pressing portion on the base material jig are relative to each other. And a moving means for bringing the pressing portion into contact with and separating from the bottom surface of the outer peripheral portion of the base material via the sheet.
- the moving means is provided on the bottom surface of the outer peripheral portion of the base material so that the pressing portion comes into contact with and separates from the sheet, the sheet is placed on the bottom surface of the outer peripheral portion of the base material by the moving means.
- the adhesive strength of the sheet adhered to the bottom surface can be increased.
- the sheet can be pressure-bonded without removing the substrate from the substrate jig, when the sheet is adhered to the bottom surface of the substrate, the adhesive layer of the extra portion of the sheet extending from the substrate is Bonding to hands, other jigs, devices, etc. is prevented.
- the moving means includes an urging means for urging the base material jig in a direction in which the base material held on the base material jig is separated from the pressing portion, and the base It is preferable to include a pressing unit that presses the base material held on the material jig in a direction in contact with the pressing portion. If it does in this way, a sheet can be easily applied to the bottom of the outer peripheral part of the substrate by pressing the substrate with the pressing unit against the urging unit and moving the substrate in a direction to contact the pressing part. It can be securely crimped.
- the pressing means may be configured using air pressure, or may include a pressing jig and a pressing mechanism that presses the pressing jig. .
- the base material can be pressed in the state where the base material is held by the base material jig, and the base material can be moved in the direction in contact with the pressing portion.
- the sheet can be easily and reliably crimped to the bottom surface.
- molding apparatus WHEREIN It is preferable that the recessed part is formed in the said base side rather than the bottom face of the outer peripheral part of the said base material in the side peripheral surface of the said base material jig. In this way, when the sheet is pressure-bonded to the bottom surface of the outer peripheral portion of the base material by the moving means, a part of the sheet is released into the concave portion provided on the side peripheral surface of the base material jig and accommodated here. The sheet can be brought into contact with the bottom surface uniformly and adhered.
- the molding method of the second aspect of the present invention is a molding method comprising a holding step of holding a base material on a base material jig and an adhesion step of covering and bonding a sheet having an adhesive layer on the base material.
- the side peripheral surface of the base material jig is positioned on the inner side of the outer peripheral surface of the base material so that the outer peripheral portion of the base material extends outside the side peripheral surface of the base material jig.
- the base material is held by the base material jig so that, after the adhering step, the pressing portion disposed opposite the bottom surface of the outer peripheral portion of the base material is relative to the bottom surface of the outer peripheral portion of the base material.
- a crimping step of crimping the sheet adhered on the bottom surface to the bottom surface.
- the pressing portion in the pressure-bonding step after the bonding step, the pressing portion is moved relative to the bottom surface of the outer peripheral portion of the base material, so that the sheet bonded on the bottom surface is pressure-bonded to the bottom surface. Therefore, the adhesive strength of the sheet bonded to the bottom surface can be increased.
- the pressure bonding process of the sheet can be performed without removing the substrate from the substrate jig, when the sheet is bonded to the bottom surface of the substrate, the adhesive layer of the extra portion of the sheet extending from the substrate is Bonding to hands, other jigs, devices, etc. can be prevented.
- molding method it is preferable to use what formed the recessed part in the said press part side from the bottom face of the outer peripheral part of the said base material in the side peripheral surface as the said base material jig
- the sheet is pressure-bonded to the bottom surface of the outer peripheral portion of the base material in the press-bonding step, a part of the sheet is released into the concave portion of the side peripheral surface of the base material jig and accommodated here.
- the bottom surface can be uniformly contacted and adhered.
- the sheet is trimmed in that state without removing the base material from the base material jig. It can suppress that the adhesive layer of the sheet
- attached to this bottom face can be improved by crimping
- the sheet can be crimped without removing the substrate from the substrate jig, preventing the adhesive layer of the extra portion of the sheet extending from the substrate from adhering to the hand, other jigs, or equipment. Therefore, productivity is not significantly impaired by bonding the adhesive layer of the extra portion of the sheet to the hand, other jigs, devices, etc. Therefore, the productivity can be improved.
- FIG. 3 is a side sectional view showing an operation procedure of a molding method subsequent to FIG. 2 of the molding apparatus shown in FIG. 2.
- FIG. 10 is a side sectional view showing an operation procedure of the molding method subsequent to FIG. 9 of the molding apparatus shown in FIG. 9. It is a fragmentary sectional view showing a schematic structure and an operation procedure of a 2nd embodiment of a forming device concerning the 2nd mode of the present invention.
- FIGS. 1 and 2 are views showing a first embodiment of a molding apparatus according to the first aspect of the present invention.
- reference numeral 1 denotes a molding apparatus.
- This forming apparatus 1 is of a hot plate heating system, and as shown in FIGS. 1 and 2, a lower frame 2 having a space (accommodating space R) in which a base material jig 60 can be accommodated, and the lower frame 2
- the heating plate 3 is provided so that the heating surface 3a can be brought into close contact with the frame upper edge 2a.
- seat 4 is arrange
- the lower frame 2 and the hot plate 3 are arranged vertically, and the hot plate 3 is arranged on the upper side with respect to the lower frame 2.
- the lower frame 2 is made of a metal member and forms an accommodation space R surrounded by the peripheral wall portion 21 in a plan view, and is on the peripheral wall portion 21 side of the base 22 serving as a bottom portion.
- a large number of air holes 2b communicating with the accommodation space R are formed.
- These vent holes 2b are connected to a vacuum tank 5 equipped with a vacuum pump 51 shown in FIG. 1, and are configured to depressurize the accommodation space R by driving the vacuum pump 51 and vacuuming it during molding.
- the seat 4 can be fixed to the upper end (the frame upper edge 2 a) of the peripheral wall portion 21 of the lower frame 2 so as to close the opening of the accommodation space R.
- the lower frame 2 is provided on a slidable base 6 that can slide on the floor, and can be moved back and forth with respect to the lower molding position of the hot plate 3 as shown in FIG.
- the hot plate 3 has a flat plate shape in which the heating surface 3a has a smooth flat surface, and is formed in a shape larger than the lower frame 2 in a plan view.
- the hot plate 3 is provided so as to be movable in the vertical direction so as to move closer to and away from the lower frame 2 disposed at the lower molding position (so as to be able to contact and separate), and in a state of moving downward.
- the lower frame 2 is arranged in close contact with the frame upper edge 2a.
- the heat plate 3 is provided with a plurality of heaters 31 on the upper surface 3c side and a plurality of air holes 3b that open to the heating surface 3a. As shown in FIG. 1, these vent holes 3 b are connected to a vacuum tank 5 provided with the vacuum pump 51 for vacuum-suctioning the heating surface 3 a side and a pressurized tank 7 for storing compressed air by a compressor 71. That is, by providing the vacuum tank 5, the pressure reduction loss can be reduced.
- the vacuum tank 5 maintained in a vacuum state is opened and vacuum suction is performed from the lower frame 2, or compressed air is supplied from the pressurized tank 7 to the heating surface 3a.
- the pressure can be applied toward the storage space R.
- the base material jig 60 is made of metal or the like disposed on the base 22, and the base material 10 made of resin or the like is attached to and held on the base material jig 60. .
- the base material jig 60 is formed to have a slightly smaller planar view shape than the base material 10. Therefore, the base material 10 is held by the base material jig 60 in a state in which the outer peripheral portion extends outside the side peripheral surface of the base material jig 60 and covers the upper part of the side peripheral surface of the base material jig 60. ing. That is, the base material jig 60 is formed and arranged so that the side peripheral surface thereof is inside the outer peripheral surface of the base material 10.
- the base material jig 60 can be moved up and down with respect to the base 22, that is, can be moved between a state where it is in contact with or close to the upper surface of the base 22 and a state where it is sufficiently separated.
- a plurality of coil springs 61 as urging means are provided on the bottom surface side of the base material jig 60.
- Each of the coil springs 61 is accommodated in an accommodation recess 62 formed and arranged at an appropriate interval on the outer peripheral portion of the bottom surface of the base material jig 60, and the other end is arranged in contact with the upper surface of the base 22. It is installed.
- the base material jig 60 is biased in a direction away from the upper surface of the base 22 by the coil spring 61. Therefore, at the normal time, that is, when not pressed, the base 22 is shown in FIGS. 2 and 3A. It is in a state of floating a predetermined distance from.
- the compressed air is introduced into the accommodation space R by the pressurized tank 7 provided with the compressor 71, whereby the base material jig 60 holds the base material 10, and will be described later.
- the air pressure of the compressed air from the pressurized tank 7 is used as the pressing means, and the moving means is configured together with the urging means (coil spring 61).
- the blades 63 are provided on the base 22 at positions corresponding to the outer periphery of the base material jig 60, that is, outside positions close to the side peripheral surface of the base material jig 60 in the present embodiment.
- the placement is fixed.
- the blade 63 has an annular shape arranged upward, and has a shape corresponding to the planar view shape of the base material jig 60. Therefore, the blade 63 is disposed to face the bottom surface 10 a of the outer peripheral portion of the base material 10 that extends outward from the side peripheral surface of the base material jig 60.
- the tip of the blade 63 is the top of the base material 10 at the normal time (when not pressed). It is in a state of being separated from the bottom surface 10a.
- the moving means can move the blade 63 relative to the bottom surface 10 a of the outer peripheral portion of the base material 10 by moving the base material jig 60 toward the blade 63. It is like that.
- the moving means and the blade 63 constitute a trimming means.
- a cover 64 that covers the outer surface of the blade 63 is provided on the outer peripheral side of the blade 63.
- the cover 64 is provided on the outer surface side of the blade 63 so that only the tip end portion of the blade 63 protrudes from the upper end surface thereof, and prevents the sheet 4 from adhering to the outer surface of the blade 63. belongs to.
- Such a cover 64 may be provided on the entire base 22 excluding the inside of the blade 63 or may be provided only in the vicinity of the blade 63. However, the cover 64 is disposed so as not to block the vent hole 2b of the lower frame 2. Further, when the length of the blade 63 protruding on the base 22 is sufficiently short, the cover 64 can be omitted.
- the sheet 4 is a known multilayer sheet having a printing layer and a protective film or carrier film provided on the surface thereof, and having an adhesive layer on the back side of the printing layer.
- the outer peripheral portion 4 a of the sheet 4 is fixed to the frame upper edge 2 a of the lower frame 2 in a horizontal state by a fixing means (not shown).
- the base material 10 side (the lower surface 4b side) of the sheet 4 is an adhesive layer, and a gap is formed between the lower surface 4b and the base material 10 in a state of being fixed to the lower frame 2. ing.
- the gap between the base material 10 and the hot plate 3 (sheet 4) can be formed, for example, if it is about 5 mm. By reducing this gap, the recess (housing space R) of the lower frame 2 is minimized. Can be limited.
- the molding apparatus 1 performs the adsorption / heating operation by the hot plate 3 and the pressure reducing operation in the accommodation space R below the sheet 4 in a state where the lower frame 2 and the hot plate 3 are in close contact with each other with the sheet 4 interposed therebetween.
- a molding operation means (not shown) for stopping the adsorption operation by the hot plate 3 after a predetermined time from the start of these operations and releasing or pressurizing the space between the hot plate 3 and the sheet 4. I am doing. That is, in the molding apparatus 1, the base material 10 held on the base material jig 60 by the pressure reducing means including the lower frame 2, the hot plate 3, the vacuum tank 5, and the pressure tank 7 is used. An adhering means for adhering the sheet 4 is configured.
- the molding operation means includes, for example, a control circuit for performing the operation.
- the base material 10 is set on the base material jig 60 disposed on the base 22 of the lower frame 2, and the base material 10 is deposited on the base material jig 60. Hold (holding step). In this state, the base material jig 60 is biased upward by the action of the coil spring 61 and floats on the base 22. Subsequently, the sheet 4 is placed on the frame upper edge 2 a of the lower frame 2 and is brought into close contact with the lower frame 2. That is, the sheet 4 is fixed to the frame upper edge portion 2 a of the peripheral wall portion 21 of the lower frame 2 so as to close the opening of the accommodation space R.
- the lower frame 2 on which the base material 10 is set is moved to the lower molding position of the hot plate 3 (in the direction of arrow X in FIG. 1).
- the hot plate 3 is moved downward, and the outer peripheral portion of the heating surface 3 a is brought into close contact with the frame upper edge portion 2 a of the lower frame 2 via the sheet 4.
- the sheet 4 is disposed in a state where the entire upper surface is substantially in contact with the heating surface 3 a of the hot plate 3, and the outer peripheral portion 4 a is sandwiched between the lower frame 2 and the hot plate 3.
- the pressure between the hot plate 3 and the sheet 4 is reduced, and the sheet is adsorbed on the heating surface 3a to be heated.
- the storage space R below the seat 4 is decompressed. Specifically, the heating plate 3 is heated by the heater 31, the vacuum tank 5 is opened, and the sheet 4 is moved toward the heating surface 3a of the heating plate 3 through the vent holes 3b (in FIG. 2). Vacuum suction in the direction of arrow P1). Thereby, the sheet 4 is adsorbed on the heating surface 3a, and the adsorbed sheet 4 is heated.
- the vacuum tank 5 is opened, and vacuum suction is performed in the direction in which the sheet 4 moves downward (arrow P2 direction) through the vent hole 3b.
- the air in the accommodation space R below the seat 4 is sucked in the direction of the arrow E1 in FIG. 2, and the accommodation space R is decompressed to a high vacuum state.
- the adsorption operation of the sheet 4 is stopped in a state where the decompression operation of the accommodation space R is maintained, and the space between the hot plate 3 and the sheet 4 is released to the atmosphere or pressurized toward the lower frame 2 side.
- the sheet 4 adsorbed on the hot plate 3 is heated to a predetermined temperature, and after a predetermined time has elapsed, the suction operation is stopped by stopping the vacuum suction on the hot plate 3 side.
- the sheet 4 softened by heating leaves the heating surface 3 a of the hot plate 3 and moves in the direction of arrow E ⁇ b> 2 toward the base 22 (base material 10) of the lower frame 2 on the lower side of the sheet 4. Then, it is pressed against the surface of the substrate 10 to cover and bond (bonding process).
- the sheet 4 has a bottom surface 10a of the outer peripheral portion of the base material 10 and a part of a side peripheral surface of the base material jig 60 as shown in FIG. 3B. To the top surface of the cover 64. Even if the sheet 4 adheres to the base material 10 in this manner, the base material jig 60 is lowered toward the base 22 because no pressure is applied to the base material jig 60 in this state. The floating state is maintained by the coil spring 61.
- the compressed air is ejected from the vent hole 3b of the hot plate 3 by switching from the vacuum tank 5 to the pressurized tank 7 shown in FIG.
- the inside of R may be pressurized.
- the pressing force at that time is set to a pressure sufficiently smaller than the biasing force of the coil spring 61 biasing the base material jig 60 so that the base material jig 60 does not descend.
- compressed air having a preset pressure is introduced from the pressurized tank 7 shown in FIG. 1 into the accommodation space R through the vent holes 3 b of the hot plate 3.
- the pressure of the compressed air to be introduced (preset pressure), that is, the air pressure is sufficiently higher than the pressure when the space between the hot plate 3 and the sheet 4 is first opened to the atmosphere or pressurized toward the lower frame 2 side.
- a large pressure that is, a pressure larger than the biasing force of the coil spring 61 that biases the base material jig 60 is used.
- the blades 63 are disposed on the base 22 so as to face the bottom surface 10a of the outer peripheral portion of the base material 10.
- the blade 63 moves relatively toward the bottom surface 10a of the base material 10, and cuts the sheet 4 adhered on the bottom surface 10a. That is, the sheet 4 bonded to the base material 10 is trimmed.
- the hot plate 3 is moved upward, and the lower frame 2 is moved laterally together with the gantry 6 shown in FIG. Then, the completed molded product (the base material 10 coated and bonded with the sheet 4) is removed from the base material jig 60 and taken out from the accommodation space R, thereby completing a series of molding operations.
- the base material 10 is attached to the base material 10 to which the sheet 4 is adhered by the trimming means including the blade 63 and the moving means. Since the sheet 4 can be trimmed in this state without being removed from the jig 60, it is not necessary to remove the base material 10 from the base material jig 60 and transfer it, and therefore, an extra portion extending from the base material 10. It is possible to reliably prevent the adhesive layer of the sheet 4 from adhering to the hand, other jigs, devices or the like. That is, after bonding the sheet 4 to the base material 10, trimming can be finished without exposing the adhesive layer of the sheet 4. Therefore, it is possible to prevent the sheet 4 from being peeled off from the base material 10 or to break the sheet 4 as in the conventional case, and the productivity can be significantly improved.
- the base material jig 60 for holding the base material 10 to which the sheet 4 is bonded and the blade 63 are relatively moved by a moving means, that is, a coil spring 61 as an urging means and an air pressure as a pressing means, so that the sheet 4 Since the sheet is cut, the sheet 4 can be easily and reliably trimmed.
- the coil spring 61 is used as the biasing means, but an elastic body such as rubber may be used instead.
- the urging means and the pressing means are provided as the moving means.
- a moving means that allows the substrate jig 60 to move up and down may be used. Good.
- this moving means for example, a known air cylinder mechanism that allows the base material jig 60 to move up and down can be used. However, in that case, when the base material jig 60 is lowered by the air cylinder mechanism, the base material 10 is placed on the base material jig 60 so that the base material 10 is also lowered together with the base material jig 60.
- a fixing mechanism for example, a fixing mechanism by vacuum suction or the like.
- a part of the sheet 4 is also bonded to the side peripheral surface of the base material jig 60, so that the base material jig 60 and the base material 10 are integrated with each other via the sheet 4. Turn into. Therefore, when the base material jig 60 is lowered, the base material 10 is also lowered, so that the fixing mechanism can be omitted.
- FIGS. 5A and 5B are views showing a second embodiment of the molding apparatus according to the first aspect of the present invention.
- the molding apparatus shown in FIGS. 5A and 5B is different from the molding apparatus 1 shown in FIGS. 1 to 4 in that, instead of using the air pressure by the pressurized tank 7 as the pressing means in the moving means, a holding jig is used. 65 and a hot plate 3 as a press mechanism.
- a pressing jig 65 made of resin, metal, or the like is provided separately from the hot plate 3 and the lower frame 2.
- the holding jig 65 has a recess 65a that engages with the outer surface of the base material 10 so as to substantially cover the outer surface of the base material 10, and is moved onto the base material 10 on the base material jig 60 by a moving mechanism (not shown). It is made to adhere to the base material 10.
- the pressing jig 65 may be manually attached to the base material 10 without being configured to be automatically attached to the base material 10 by the moving mechanism.
- the holding jig 65 is attached to the base material 10 to which the sheet 4 is bonded, by the moving mechanism or by hand.
- the hot plate 3 is lowered again so as to function as a press mechanism, whereby the pressing jig 65 is pressurized and lowered. Then, since the pressing force applied toward the base material 10 via the pressing jig 65, that is, the pressing force by the hot plate 3 becomes a pressure larger than the urging force of the coil spring 61, the base material jig 60 holds the base material 10. It descends while holding it.
- the base material jig 60 is lowered, and the base material 10 is also pressed and lowered at the same time, so that the blade 63 is relatively moved to the bottom surface 10a of the base material 10 in the same manner as in the first embodiment.
- the sheet 4 adhered to the bottom surface 10a is cut. That is, the sheet 4 bonded to the base material 10 is trimmed.
- the hot plate 3 is raised again.
- the base material jig 60 is lifted again by the action of the coil spring 61 and floats from the base 22.
- the blade 63 is separated from the bottom surface 10a of the substrate 10, trimming is completed, and a molded product is completed.
- the pressing jig 65 is removed from the base material 10, and thereafter, a completed molded product (the base material 10 coated and bonded with the sheet 4) is taken out in the same manner as in the first embodiment, and a series of molding operations is completed. .
- the base material 10 is bonded to the base material 10 to which the sheet 4 is bonded by the trimming means including the blade 63 and the moving means having the pressing means. Since the sheet 4 can be trimmed in this state without being removed from the base material jig 60, it is not necessary to remove the base material 10 from the base material jig 60 and to transfer it, so that it extends from the base material 10. It is possible to reliably prevent the adhesive layer of the extra portion of the sheet 4 from adhering to a hand, another jig, or an apparatus. Therefore, it is possible to prevent the sheet 4 from being peeled off from the base material 10 or to break the sheet 4 as in the conventional case, and the productivity can be significantly improved.
- FIG. 6 is a diagram showing a third embodiment of the molding apparatus according to the first aspect of the present invention.
- the molding apparatus shown in FIG. 6 is different from the molding apparatus 1 shown in FIGS. 1 to 4 in that the trimming means includes a blade 80 and an advance / retreat means 81.
- the base material jig 60 has a plan view outer shape that is substantially the same as the plan view of the base material 10, and therefore, the side peripheral surface of the base material jig 60 and the outer peripheral surface of the base material 10. Is configured to be substantially flush with each other.
- the blade 80 is a side peripheral surface of the base material 10 or the base material jig 60, or a side peripheral surface of the base material 10 and a side periphery of the base material jig 60. It is horizontally arranged opposite to the surface. (In FIG.
- the blade 80 is formed by arranging a plurality of blades in an annular shape in plan view, and advances and retreats without interfering with each other, thereby simultaneously or sequentially cutting the outer periphery of the base material 10 or the base material jig 60 ( Cutting), as a result, the sheet of the extra part located on the outer periphery of the base material 10 is removed and trimmed.
- a cover 82 a is provided around the blade 80 to cover the side surface of the blade 80, project only the tip of the blade 80, and guide the advance and retreat of the blade 80.
- the advance / retreat means 81 is also provided with a cover 82b for preventing the sheet 4 from adhering.
- the advancing / retreating means 81 is disposed on the base 22 corresponding to each blade constituting the blade 80, and comprises a known air cylinder mechanism or the like, and holds and fixes the blade 80. This is advanced and retracted toward the substrate 10.
- the advance / retreat means 81 may be provided with a revolving mechanism, and the advance / retreat means 81 may be revolved around the base material 10 (base material jig 60) together with the blade 80. In that case, the blade 80 can be formed as a single blade without being constituted by a plurality of blades.
- the outer periphery of the sheet 4 becomes the base material 10 as shown in FIG.
- the advancing / retracting means 81 and the cover 82 are further covered.
- the advance / retreat means 81 is operated to advance the blade 80 as shown by a two-dot chain line in FIG. Then, the blade 80 cuts the sheet 4 and comes into contact with the side peripheral surface of the substrate 10. Thereby, the sheet
- the base material 10 is attached to the base material 10 to which the sheet 4 is bonded by the trimming means including the blade 80 and the advance / retreat means 81. Since the sheet 4 can be trimmed in this state without being removed from the jig 60, it is not necessary to remove the base material 10 from the base material jig 60 and transfer it, and therefore, an extra portion extending from the base material 10. It is possible to reliably prevent the adhesive layer of the sheet 4 from adhering to the hand, other jigs, devices or the like. Therefore, it is possible to prevent the sheet 4 from being peeled off from the base material 10 or to break the sheet 4 as in the conventional case, and the productivity can be significantly improved.
- the side peripheral surface of the base material 10 the side peripheral surface of the base material jig 60, the side peripheral surface of the base material 10, and the base corresponding to the desired covering state of the sheet 4 on the base material 10
- the material jig 60 can be disposed so as to be opposed to any one of the side peripheral surfaces of the material jig 60.
- FIG. 7 is a view showing a fourth embodiment of the molding apparatus according to the first aspect of the present invention.
- the molding apparatus shown in FIG. 7 is different from the molding apparatus shown in FIG. 6 in that the trimming means is provided so as to be movable with respect to the apparatus for bonding the sheet 4 to the substrate 10.
- a coil spring 61 that biases the blade 63 and the base material jig 60 in the molding apparatus 1 shown in FIG. The thing except the structure is used.
- a side cut device 85 is used as the trimming means.
- the side cut device 85 includes the blade 80 and the advance / retreat means 81 shown in FIG. 6, and further includes a moving mechanism (not shown).
- the side cut device 85 is provided so as to be movable with respect to the device for adhering the sheet 4. Yes.
- the blade 80 of the side cut device 85 also corresponds to the desired covering state of the sheet 4 with respect to the base material 10 in the same manner as the blade 80 shown in FIG.
- These side peripheral surfaces can be arranged so as to face each other between the side peripheral surfaces of the base material 10 and the side peripheral surface of the base material jig 60.
- the hot plate 3 is once raised, and the accommodation space of the lower frame 2 R is released.
- the side cut device 85 is arrange
- the advance / retreat means 81 is operated to advance the blade 80 as indicated by a two-dot chain line in FIG. Then, the blade 80 cuts the sheet 4 and comes into contact with, for example, the side peripheral surface of the base material 10. Thereby, the sheet
- the blade 80 is moved backward by the advance / retreat means 81. Thereby, trimming is completed and a molded product is completed. Thereafter, the side cut device 85 is returned from the base 22 to the initial position by the moving mechanism. Thereafter, a completed molded product is taken out in the same manner as in the first embodiment, and a series of molding operations is completed.
- the trimming means (side cut apparatus 85) provided with the blade 80 and the advance / retreat means 81 is used to attach the sheet 4 to the substrate 10. Since the sheet 4 can be trimmed in this state without removing the base material 10 from the base material jig 60, it is not necessary to remove the base material 10 from the base material jig 60 and to transfer it. It is possible to reliably prevent the adhesive layer of the extended sheet 4 extending from the hand from adhering to a hand, another jig, or an apparatus. Therefore, it is possible to prevent the sheet 4 from being peeled off from the base material 10 or to break the sheet 4 as in the conventional case, and the productivity can be significantly improved.
- the base material 10 to which the sheet 4 is bonded is used. While being held by the material jig 60, the substrate jig 60 may be moved to the side cut device 85 to perform trimming. At this time, the movement of the base material jig 60 to the side cut device 85 may be performed by a moving mechanism (not shown) or manually.
- the molding apparatus according to the first aspect of the present invention includes the trimming means shown in FIGS. 2 to 4, the trimming means shown in FIGS. 5A and 5B, the trimming means shown in FIG. 6, and the trimming means shown in FIG.
- the trimming means may be appropriately selected and used according to the form of the base material 10, the properties of the sheet 4, and the like.
- the thing of the hot plate heating system was used as a mechanism which adhere
- the structure which moves the base material jig 60 with respect to the blade 63 was employ
- the lower frame 2 of the molding apparatus can be advanced and retracted with respect to the lower molding position of the hot plate 3 as shown in FIG.
- a rotary system that rotates in a circular shape in plan view may be used.
- the pressing jig 65 and the hot platen 3 as a press mechanism were used as the said press means, for example, a shaping
- the trimming means can be movably provided on the apparatus for bonding the sheet 4 to the base material 10.
- a separate pressing device (not shown) can be used without using the hot plate 3 as a pressing mechanism.
- the lower frame 2 of the molding apparatus shown in FIGS. 5A and 5B is moved to a position different from the hot plate 3 shown in FIG. Then, trimming can be performed by pressing the pressing jig 65 as shown in FIG. 5B by a pressing device provided with a pressing plate corresponding to the hot plate 3 shown in FIG. 5B.
- a pressing device provided with a pressing plate corresponding to the hot plate 3 shown in FIG. 5B.
- FIGS. 8 to 11 are views showing a first embodiment of the molding apparatus according to the second aspect of the present invention.
- reference numeral 101 denotes a molding apparatus.
- This forming apparatus 101 is of a hot plate heating type, and as shown in FIGS. 8 and 9, a lower frame 102 having a space (accommodating space R 1) capable of accommodating a base material jig 160, and the lower frame 102.
- a hot plate 103 capable of bringing the heating surface 103a into close contact with the upper edge 102a of the frame.
- a resin sheet 104 is disposed between the lower frame 102 and the hot plate 103, and the sheet 104 is thermoformed and bonded to the base material 110.
- the lower frame 102 and the hot plate 103 are arranged vertically, and the hot plate 103 is arranged on the upper side with respect to the lower frame 102.
- the lower frame 102 is made of a metal member, and forms an accommodation space R1 surrounded by the peripheral wall 121 on four sides in plan view, and is on the peripheral wall 121 side of the base 122 serving as the bottom.
- a large number of vent holes 102b communicating with the accommodation space R1 are formed on the (outer peripheral side).
- These vent holes 102b are connected to a vacuum tank 105 having a vacuum pump 151 shown in FIG. 8, and are configured to depressurize the accommodation space R1 by driving the vacuum pump 151 and performing vacuum suction during molding.
- the sheet 104 can be fixed to the upper end (upper frame edge portion 102a) of the peripheral wall portion 121 of the lower frame 102 so as to close the opening of the accommodation space R1.
- the lower frame 102 is provided on a slidable base 106 that can slide on the floor, and can be moved back and forth with respect to the molding position below the hot platen 103 as shown in FIG.
- the hot plate 103 has a flat plate shape in which the heating surface 103a has a smooth flat surface, and is formed in a shape larger than the lower frame 102 in a plan view.
- the hot plate 103 is provided so as to be movable in the vertical direction so as to move closer to and away from the lower frame 102 disposed at the lower molding position (so as to be able to contact and separate), and in a state of moving downward.
- the lower frame 102 is arranged in close contact with the frame upper edge portion 102a.
- the heat plate 103 is provided with a plurality of heaters 131 on the upper surface 103c side and a plurality of vent holes 103b that open to the heating surface 103a. As shown in FIG. 8, these vent holes 103 b are connected to a vacuum tank 105 provided with the vacuum pump 151 that vacuum-sucks the heating surface 103 a side, and a pressurized tank 107 that stores compressed air by the compressor 171. In other words, the vacuum loss can be reduced by providing the vacuum tank 105.
- the vacuum tank 105 maintained in a vacuum state is opened and vacuum suction is performed from the lower frame 102, or compressed air is supplied from the pressurized tank 107 to the heating surface 103a.
- the pressure can be applied toward the accommodation space R1. Note that the vacuum degree may be increased by directly sucking the vacuum pump 151 without driving the vacuum tank 105.
- the base material jig 160 is made of metal or the like disposed on the base 122, and a base material 110 made of resin or the like is attached to and held on the base material jig 160. .
- the base material jig 160 is formed to have a slightly smaller planar view shape than the base material 110. Therefore, the base material 110 is held by the base material jig 160 with its outer peripheral portion extending outside the side peripheral surface of the base material jig 160 and covering the upper part of the side peripheral surface of the base material jig 160. ing. That is, the base material jig 160 is formed and arranged so that the side peripheral surface thereof is inside the outer peripheral surface of the base material 110.
- the base material jig 160 can be moved up and down with respect to the base 122, that is, can be moved between a state where it is in contact with or close to the upper surface of the base 122 and a state where it is sufficiently separated.
- a plurality of coil springs 161 as biasing means are provided on the bottom surface side of the base material jig 160.
- Each of the coil springs 161 is accommodated in an accommodation recess 162 formed and arranged at an appropriate interval on the outer peripheral portion of the bottom surface of the base material jig 160, and the other end is arranged in contact with the upper surface of the base 122. It is installed.
- the base material jig 160 is biased in a direction away from the upper surface of the base 122 by the coil spring 161. Therefore, at the normal time, that is, when not pressed, the base 122 is shown in FIGS. 9 and 10A. It is in a state of floating a predetermined distance from.
- the compressed air is introduced into the accommodation space R1 by the pressurized tank 107 including the compressor 171 so that the base material 110 is held by the base material jig 160 and will be described later.
- the sheet 104 is covered and bonded, the sheet 104 is pressed by the introduced compressed air and is lowered together with the base material jig 160 toward the base 122 side.
- the air pressure of the compressed air from the pressurized tank 107 is used as a pressing means, and the moving means is configured together with the urging means (coil spring 161).
- a pressing portion 163 is disposed and fixed on the base 122 so as to surround the base material jig 160 in the present embodiment.
- the pressing portion 163 is an annular or substantially annular shape having an upper surface as a pressing surface, and a housing portion 164 including a through hole or a recess having a shape corresponding to the planar view shape of the base material jig 160 is formed therein. Yes. Since the base material jig 160 is stored in the storage portion 164, the pressing portion 163 is disposed outside the side peripheral surface of the base material jig 160. Such a pressing portion 163 is arranged so as not to block the vent hole 102b of the lower frame 102.
- the pressing portion 163 is formed separately from the base 122 and is fixed on the base 122, but may be formed integrally with the base 122. That is, a concave portion that accommodates the base material jig 160 may be formed directly on the base 122 to serve as the accommodating portion 164, and the outside thereof may function as the pressing portion 163.
- the upper surface of the pressing portion 163, that is, the pressing surface is disposed to face the bottom surface 110 a of the outer peripheral portion of the base material 110 extending outward from the side peripheral surface of the base material jig 160. ing.
- the pressing surface of the pressing portion 163 is a base material at a normal time (when not pressed). 110 is separated from the bottom surface 110a.
- the moving means moves the base material 110 on the base material jig 160 toward the pressing surface of the pressing portion 163, and the bottom surface 110a of the base material 110 via the sheet 104 as will be described later. Is brought into contact with the pressing surface (pressing portion 163) to be crimped.
- the sheet 104 is a known multilayer sheet having a printing layer and a protective film or carrier film provided on the surface thereof, and having an adhesive layer on the back side of the printing layer.
- the outer periphery 104a of the sheet 104 is fixed in a horizontal state to the frame upper edge portion 102a of the lower frame 102 by a fixing means (not shown).
- the base material 110 side (the lower surface 104b side) of the sheet 104 is an adhesive layer, and a gap is formed between the lower surface 104b and the base material 110 while being fixed to the lower frame 102. ing.
- the gap between the substrate 110 and the hot plate 103 (sheet 104) can be formed, for example, if it is about 5 mm. By reducing this gap, the recess (housing space R1) of the lower frame 102 is minimized. Can be limited.
- the molding apparatus 101 performs the adsorption / heating operation by the hot plate 103 and the pressure reducing operation in the accommodation space R1 below the sheet 104 in a state where the lower frame 102 and the hot plate 103 are in close contact with each other with the sheet 104 interposed therebetween.
- a molding operation means (not shown) that stops the adsorption operation by the hot plate 103 after a predetermined time from the start of these operations and opens or pressurizes the space between the hot plate 103 and the sheet 104. I am doing. That is, in the molding apparatus 101, the lower frame 102, the hot plate 103, a decompression unit including the vacuum tank 105, a pressurization unit including the pressurization tank 107, etc.
- An adhering means for adhering the sheet 104 is configured.
- the molding operation means includes, for example, a control circuit for performing the operation.
- a pressing portion 163 is disposed and fixed on a base 122 of the lower frame 102, and a base material jig 160 is disposed in the housing portion 164.
- the base material 110 is set on the surface 160, and the base material 110 is deposited and held on the base material jig 160 (holding process).
- the base material jig 160 is biased upward by the action of the coil spring 161 and floats on the base 122.
- the sheet 104 is placed on the frame upper edge portion 102 a of the lower frame 102 and is brought into close contact with the lower frame 102. That is, the sheet 104 is fixed to the frame upper edge portion 102a of the peripheral wall portion 121 of the lower frame 102 so as to close the opening of the accommodation space R1.
- the lower frame 102 on which the substrate 110 is set is moved to the lower molding position of the hot plate 103 (in the direction of arrow X1 in FIG. 8).
- the hot plate 103 is moved downward, and the outer peripheral portion of the heating surface 103 a is brought into close contact with the frame upper edge portion 102 a of the lower frame 102 via the sheet 104.
- the sheet 104 is arranged in a state where the entire upper surface is substantially in contact with the heating surface 103 a of the hot plate 103, and the outer peripheral portion 104 a is sandwiched between the lower frame 102 and the hot plate 103.
- the pressure between the hot plate 103 and the sheet 104 is reduced, and the sheet is adsorbed on the heating surface 103a to be heated.
- the storage space R1 below the sheet 104 is decompressed. Specifically, the heating plate 103 is heated by the heater 131, the vacuum tank 105 is opened, and the sheet 104 is moved toward the heating surface 103a of the heating plate 103 through the vent hole 103b (in FIG. 9). Vacuum suction is performed in the direction of arrow P11). As a result, the sheet 104 is adsorbed on the heating surface 103a, and the adsorbed sheet 104 is heated.
- the vacuum tank 105 is opened, and vacuum suction is performed in the direction in which the sheet 104 moves downward (arrow P12 direction) through the vent hole 103b.
- the air in the accommodation space R1 on the lower side of the sheet 104 is sucked in the direction of the arrow E11 in FIG. 9, and the accommodation space R1 is decompressed to be in a high vacuum state.
- the suction operation of the sheet 104 is stopped in a state where the decompression operation of the accommodation space R ⁇ b> 1 is maintained, and the space between the hot plate 103 and the sheet 104 is released to the atmosphere or pressurized toward the lower frame 102.
- the sheet 104 adsorbed on the hot plate 103 is heated to a predetermined temperature, and after a predetermined time has elapsed, the vacuum suction on the hot plate 103 side is stopped to stop the adsorbing operation.
- the space between the hot plate 103 and the sheet 104 is opened to the atmosphere, so that a pressure difference is generated between the upper and lower spaces across the sheet 104. Therefore, as shown in FIG.
- the sheet 104 softened by heating leaves the heating surface 103a of the hot plate 103 and moves in the direction of arrow E12 toward the base 122 (base material 110) of the lower frame 102 on the lower side of the sheet 104. Then, it is pressed against the surface of the substrate 110 to cover and bond (bonding process).
- the sheet 104 is formed from the outer peripheral surface of the base material 110 to the bottom surface 110a of the outer peripheral portion of the base material 110 and the base material jig 160 as shown in FIG. 10B. It winds up to a part of the side peripheral surface to cover them, and further covers and adheres to the upper surface of the pressing portion 163.
- the bottom surface 110a of the outer peripheral portion of the base material 110 has a small width and a small adhesion area, and the sheet 104 is bent from the side peripheral surface of the base material 110 to the bottom surface 110a, and further from the bottom surface 10a to the base material jig.
- the sheet 104 Since the sheet is bent over the side peripheral surface 160, the sheet 104 is not pressure-bonded to the bottom surface 110a in this state. That is, the sheet 104 does not have sufficient adhesive strength with respect to the bottom surface 110a in this state. Similarly, the sheet 104 is not bonded to the side peripheral surface of the base material jig 160 with sufficient adhesive strength.
- the base material jig 160 is not directed to the base 122 because the base material jig 160 is not pressurized enough to lower the sheet 104 in this state.
- the floating state is maintained by the coil spring 161 without descending.
- the compressed tank is switched from the vacuum tank 105 to the pressurized tank 107 shown in FIG.
- the inside of R1 may be pressurized.
- the pressing force at that time is set to a pressure sufficiently smaller than the biasing force of the coil spring 161 biasing the base material jig 160 so that the base material jig 160 does not descend.
- compressed air having a preset pressure is introduced into the accommodation space R1 through the vent hole 103b of the hot plate 103 from the pressurized tank 107 shown in FIG.
- the pressure of the compressed air to be introduced (preset pressure), that is, the air pressure is sufficiently larger than the pressure when the space between the hot plate 103 and the sheet 104 is first opened to the atmosphere or pressurized toward the lower frame 102.
- the pressure is larger than the biasing force of the coil spring 161 that biases the base material jig 160.
- the pressing portion 163 is disposed on the base 122 so as to face the bottom surface 110a of the outer peripheral portion of the base material 110. Therefore, the pressing portion 163 moves relatively toward the bottom surface 110a of the base material 110, abuts against the sheet 104 adhered on the bottom surface 110a, and presses and presses the sheet. That is, the sheet 104 is sandwiched between the bottom surface 110a and the pressing surface (upper surface) of the pressing portion 163, and the sheet 104 is crushed, thereby pressing the sheet 104 to the bottom surface 110a (crimping step).
- the introduction of compressed air from the pressurized tank 107 is stopped, and the inside of the accommodation space R1 is returned to the atmospheric pressure again.
- the base material jig 160 rises again by the action of the coil spring 161 and is in a state of floating from the base 122. Accordingly, the pressing portion 163 is separated from the bottom surface 110a of the base 110, and the pressure bonding of the sheet 104 to the bottom surface 110a is finished.
- the hot plate 103 is moved upward, and the lower frame 102 is moved laterally together with the gantry 106 shown in FIG. Then, by removing the completed molded product (the base material 110 coated and bonded with the sheet 104) from the base material jig 160 and further taking it out from the accommodation space R1, a series of molding operations by the molding apparatus 101 of this embodiment is performed. finish.
- the obtained molded product is sent to the trimming step and the sheet 104 is trimmed, so that the final molded product (finished product) is obtained.
- the sheet 104 is bonded to the bottom surface 110 a by pressing the sheet 104 to the bottom surface 110 a of the outer peripheral portion of the base 110 by the pressing portion 163. Strength can be increased. Therefore, the peeling can be prevented and a defect due to the peeling of the sheet 104 can be prevented. Further, the sheet 104 can be pressure-bonded without removing the base material 110 from the base material jig 160, and the adhesive layer of the extra portion of the sheet 104 extending from the base material 110 is applied to hands, other jigs, devices, and the like. Since adhesion is prevented, the adhesive layer of the extra sheet 104 is not adhered to the hands, other jigs, devices, etc., so that productivity is not greatly impaired, and thus productivity is improved. You can plan.
- the moving means for moving the pressing portion 163 relative to the bottom surface 110 a of the outer peripheral portion of the base material 110 is configured by an urging means including the coil spring 161 and a pressing means including air pressure from the pressure tank 107. Therefore, by pressing the base 110 with the pressing means against the urging means and moving the base 110 toward the pressing portion 163, the sheet 104 can be easily placed on the bottom surface 110a of the outer peripheral portion of the base 110 and It can be securely crimped.
- the coil spring 161 is used as the urging means, but an elastic body such as rubber may be used instead.
- the urging unit and the pressing unit are provided as the moving unit.
- a moving unit that allows the base material jig 160 to move up and down may be used.
- a known air cylinder mechanism that allows the base material jig 1060 to move up and down can be used.
- the base material 110 is attached to the base material jig 160 so that the base material 110 is also lowered together with the base material jig 160.
- a fixing mechanism for example, a fixing mechanism by vacuum suction or the like.
- FIGS. 12A and 12B are views showing a second embodiment of the molding apparatus of the second aspect of the present invention.
- the molding apparatus shown in FIGS. 12A and 12B is different from the molding apparatus 1 shown in FIGS. 8 to 11 in that a pressing jig is used instead of using the air pressure from the pressure tank 107 as the pressing means in the moving means. 165 and a hot plate 103 as a press mechanism.
- a pressing jig 165 made of resin, metal, or the like is provided separately from the hot plate 103 and the lower frame 102.
- the holding jig 165 has a recess 165a that engages with the outer surface of the base material 110 so as to substantially cover the outer surface of the base material 110, and is moved onto the base material 110 on the base material jig 160 by a moving mechanism (not shown).
- the substrate 110 is attached.
- the pressing jig 165 may be manually attached to the base material 110 without being configured to be automatically attached to the base material 110 by the moving mechanism.
- the hot plate 103 is once raised, and the lower frame 102 is The accommodation space R1 is opened. Then, as shown in FIG. 12A, the holding jig 165 is attached to the base material 110 to which the sheet 104 is bonded, by the moving mechanism or manually.
- the hot plate 103 is lowered again so as to function as a press mechanism, whereby the pressing jig 165 is pressurized and lowered. Then, since the pressing force applied toward the base material 110 via the pressing jig 165, that is, the pressing force by the hot plate 103 becomes a pressure larger than the urging force of the coil spring 161, the base material jig 160 causes the base material 110 to move. It descends while holding it.
- the base material jig 160 is lowered, and the base material 110 is also pressed and lowered at the same time, so that the pressing portion 163 is relatively moved to the base material 110 as in the first embodiment of the second mode.
- the sheet 104 that moves toward the bottom surface 110a is bonded to the bottom surface 110a. That is, the sheet 104 is sandwiched between the bottom surface 110a and the pressing surface (upper surface) of the pressing portion 163, and the sheet 104 is crushed to thereby press the sheet 104 against the bottom surface 110a.
- the hot platen 103 is raised again. Then, by releasing from the pressed state, the base material jig 160 is lifted again by the action of the coil spring 161 and floats from the base 122. Accordingly, the pressing portion 163 is separated from the bottom surface 110a of the base 110, and the pressure bonding of the sheet 104 to the bottom surface 110a is finished.
- the pressing jig 165 is removed from the substrate 110, and the molded product (the base coated and bonded to the sheet 104) is then treated in the same manner as in the first embodiment of the second mode.
- the material 110) is removed from the base material jig 160, and further taken out from the accommodation space R1, thereby completing a series of molding operations. Then, a trimming process is performed on the obtained molded product to obtain a final molded product (finished product).
- the sheet 104 is bonded to the bottom surface 110a by pressing the sheet 104 to the bottom surface 110a of the outer peripheral portion of the base 110 by the pressing portion 163. Strength can be increased. Therefore, the peeling can be prevented and a defect due to the peeling of the sheet 104 can be prevented. Further, the sheet 104 can be pressure-bonded without removing the base material 110 from the base material jig 160, and the adhesive layer of the extra portion of the sheet 104 extending from the base material 110 is applied to hands, other jigs, devices, and the like. Since adhesion is prevented, the adhesive layer of the extra sheet 104 is not adhered to the hands, other jigs, devices, etc., so that productivity is not greatly impaired, and thus productivity is improved. Can be planned.
- FIGS. 13A and 13B are views showing a third embodiment of the molding apparatus according to the second aspect of the present invention.
- the molding apparatus shown in FIGS. 13A and 13B is different from the molding apparatus 101 shown in FIGS. 8 to 11 in that a substrate jig 160 having a recess 160a is used.
- a recess 160a is formed on the base 122 from the bottom surface 110a of the outer peripheral portion of the base material 110 on the side peripheral surface thereof.
- the concave portion 160a is formed in a groove shape on the entire circumference of the side peripheral surface of the base material jig 160, and from the substantially same height position as the bottom surface 110a of the adhered base material 110, below (the pressing portion 163). Side) with a predetermined width (predetermined height) and a predetermined depth.
- the width (predetermined width) and depth (predetermined depth) of the recess 160a are set to such an extent that a part of the sheet 104 can be released and accommodated during the crimping process, as will be described later, and obtained in advance through experiments and simulations. And designed.
- the base material 110 is pressed, and the base material jig 160 is lowered while the base material 110 is held.
- the pressing portion 163 moves relatively toward the bottom surface 110a of the base 110, and is adhered to the bottom surface 110a as shown in FIG. 13B. It contacts and presses 104 and crimps
- bent portion S is formed by extending and folding. In the case of the first embodiment or the second embodiment of the second mode, such a bent portion S is formed from the bottom surface 110a of the base material 110 when the base material 110 is removed from the base material jig 160 after the crimping process. It will be in the extended state. Therefore, the bent portion S does not remain in the finished product by being removed in the subsequent trimming process.
- the sheet 104 may contact the bottom surface 110a of the base material 110 unevenly. A slight pressure difference is generated between the position where the bent portion is present and the position where the bent portion is not present, and there is an undeniable possibility of unevenness in the adhesion of the sheet 104 to the bottom surface 110a of the base 110.
- the bent portion S is allowed to escape into the concave portion 160a and accommodated in the concave portion 160a as shown in FIG. 13B. Yes. Therefore, in the molding apparatus and the molding method using the same according to the present embodiment, the sheet 104 is made with respect to the bottom surface 110a of the substrate 110 by allowing the bent portion S to escape into the concave portion 160a during crimping. Can be brought into contact uniformly and pressure-bonded with a uniform pressure. Therefore, the adhesive strength of the sheet 104 adhered to the bottom surface 110a of the substrate 110 can be further increased, and the separation thereof can be prevented, so that the defect due to the separation of the sheet 104 can be more reliably prevented.
- the bent portion S described above is used. Is extended from the bottom surface 110 a of the base 110. Therefore, by removing in the subsequent trimming process, the bent portion S is removed from the finished product and does not remain.
- FIGS. 14A and 14B are views showing a fourth embodiment of the molding method of the second aspect of the present invention.
- the molding method shown in FIGS. 14A and 14B is different from the molding method by the molding apparatus 1 shown in FIGS. 8 to 11 in that a substrate 110 having a concave portion is used.
- the base material 110 of the present embodiment includes a base material jig 160 side of the bottom surface 110 a of the outer peripheral portion that extends outward from the side peripheral surface of the base material jig 160, that is, the inner peripheral edge portion.
- a concave stepped portion (concave portion) 110b is formed.
- the stepped portion 110b is formed in an annular shape around the entire inner periphery of the bottom surface 110a of the base material 110, and is formed by cutting out from the bottom surface 110a of the base material 110 to a predetermined width and a predetermined depth. It has been done.
- the width (predetermined width) and depth (predetermined depth) of the stepped portion 110b are set such that a part of the sheet 104 is allowed to escape during the crimping step, as in the case of the concave portion 160a of the second embodiment. It can be accommodated, and is obtained and designed in advance through experiments and simulations.
- the sheet 104 is bonded to the base material 110 as shown in FIG.
- the base material jig 160 is lowered while pressing the material 110 and holding the base material 110.
- the pressing portion 163 moves relatively toward the bottom surface 110a of the base 110, and is adhered to the bottom surface 110a as shown in FIG. 14B. It contacts and presses 104 and crimps
- the bent portion S is formed by extending and folding. Therefore, in this embodiment, by forming the stepped portion 110b on the base material 110, the bent portion S is released into the stepped portion 110b during crimping as shown in FIG. Yes.
- the bottom surface of the substrate 110 is released by letting the bent portion S escape into the stepped portion 110b during the crimping.
- the sheet 104 can be uniformly abutted against the 110a and can be pressed with a uniform pressure. Therefore, the adhesive strength of the sheet 104 adhered to the bottom surface 110a of the substrate 110 can be further increased, and the separation thereof can be prevented, so that the defect due to the separation of the sheet 104 can be more reliably prevented.
- the bent portion S described above is used. Is extended from the bottom surface 110 a of the base 110. Therefore, by removing in the subsequent trimming process, the bent portion S is removed from the finished product and does not remain.
- the hot plate heating method is used as the mechanism for adhering the sheet 104 to the base material 110.
- a radiation heating method may be used.
- tool 160) with respect to the press part 163 as a moving means to move the base material 110 and the press part 163 relatively may comprise so that the base material 110 (base material jig
- the lower frame 102 of the molding apparatus can be moved forward and backward with respect to the molding position on the lower side of the hot plate 103, that is, a slide type that slides in the front-rear direction.
- a rotary system that rotates in a circular shape in plan view may be used.
- the present invention provides a molding apparatus and a molding method for thermoforming a sheet and bonding the sheet to a substrate. According to the present invention, productivity can be significantly improved as compared with conventional molding apparatuses and molding methods.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
本願は、2011年10月4日に日本国に出願された特願2011-220292号及び特願2011-220296号に基づき優先権を主張し、それらの内容をここに援用する。
加熱方式がチャンバー内輻射加熱であり、この加熱によりシートの軟化に起因して伸びが発生するため、この延びによる垂れ下がりを抑える必要がある。そこで、上下チャンバー内の真空圧調整を行い、シートの水平状態を維持するようにしているが、このシートの正確な伸び量の確認が困難であることから、シート全面の温度分布が不均一となり、確実な成形、および接着を得ることができず、安定した品質が得られない。さらに、基材形状に対する印刷シートの位置ずれが発生する。
さらに、従来の上下チャンバーによる熱成形では、チャンバーの容積が大きいので、減圧時間がかかり、サイクルタイムが長くなり、成形効率が低下する。
この熱成形装置は、基材を収容可能な空間を有する下枠と、該下枠の枠上縁部に対して加熱面を密接可能とした熱板とを備え、前記下枠と熱板との間にシートを配置させ、そのシートを熱成形して金型賦形または前記基材に接着させる熱板加熱による熱成形装置であって、前記下枠には、前記枠上縁部に前記シートを固定可能で、且つ前記シートの下側の前記空間を減圧する減圧手段が設けられ、前記熱板には、前記加熱面側を吸引する減圧手段と、前記加熱面を加熱する加熱手段と、前記加熱面側を大気開放又は加圧する手段とが設けられ、前記下枠と熱板とを前記シートを挟んで密接させた状態で、前記熱板による吸着・加熱動作を行う吸着・加熱制御手段と、前記シートの下側の前記空間内の減圧動作を行う減圧制御手段と、前記吸着・加熱制御手段による吸着・加熱動作と前記減圧制御手段による減圧動作とを並行させ、これらの動作開始から所定時間後に前記吸着・加熱動作を停止し、前記熱板と前記シートとの間を大気開放する又は加圧する成形動作制御手段と、を有する。
そして、この熱成形装置によれば、基材形状にかかわらず高品質な成形を実現することができ、また基材形状に対する印刷シートの位置合わせを良好に行うことができ、さらに成形にかかるサイクルタイムを短縮して成形の効率化を図ることができる。
しかしながら、前記特許文献1の真空プレス積層成形装置や前記特許文献2の熱板加熱による熱成形装置にあっては、このようなトリミングを行う際の不都合に対する特段の考慮はなされていない。
その際、例えば前記特許文献2の熱板加熱による熱成形装置では、基材の底面にシートを巻き込んで接着する処理を、基材の底面上に位置するシートに圧縮空気を吹き付けることで行っている。
このようにすれば、シートを接着した基材を保持する基材治具と刃とを移動手段によって相対的に移動させ、シートをカットすることにより、シートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、基材にシートを接着した後、基材治具を移動させることなくその状態のままで、トリミングを行うことができる。
このようにすれば、付勢手段に抗して押圧手段で基材を押圧し、基材を刃に当接する方向に移動させることにより、シートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、基材治具に基材を保持させた状態のままで基材とともに基材治具を押圧し、基材を刃に当接する方向に移動させることができ、したがってシートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、進退手段によって刃を基材または基材治具、あるいはこれらの間に向けて進退させ、シートをカットすることにより、シートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、基材治具に保持された基材の外周部の底面に刃を相対的に移動させ、底面上に接着されたシートをカットすることにより、シートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、刃を基材または基材治具、あるいはこれらの間に向けて進退させることにより、シートのトリミングを容易にかつ確実に行うことができる。
このようにすれば、付勢手段に抗して押圧手段で基材を押圧し、基材を押圧部に当接する方向に移動させることにより、基材の外周部の底面にシートを容易にかつ確実に圧着することができる。
このようにすれば、基材治具に基材を保持させた状態のままで基材を押圧し、基材を押圧部に当接する方向に移動させることができ、したがって基材の外周部の底面にシートを容易にかつ確実に圧着することができる。
このようにすれば、前記移動手段によって基材の外周部の底面にシートを圧着した際、シートの一部を基材治具の側周面に設けた凹部に逃がしてここに収容することで、シートを前記底面にむらなく均一に当接させ、接着することが可能になる。
このようにすれば、圧着工程において基材の外周部の底面にシートを圧着した際、シートの一部を基材治具の側周面の凹部に逃がしてここに収容することで、シートを前記底面にむらなく均一に当接させ、接着することができる。
このようにすれば、圧着工程において基材の外周部の底面にシートを圧着した際、シートの一部を基材の凹状部に逃がしてここに収容することで、シートを前記底面にむらなく均一に当接させ、接着することができる。
また、基材を基材治具から取り外すことなくシートを圧着できるようにし、基材から延び出た余分な部位のシートの接着層が手や他の治具、装置などに接着するのを防止しているため、余分な部位のシートの接着層が手や他の治具、装置などに接着することで生産性が大きく損なわれることがなく、したがって生産性の向上を図ることができる。
図2に示すように下枠2の周壁部21の上端(枠上縁部2a)には、収容空間Rの開口を塞ぐようにしてシート4を固定することが可能になっている。
また、下枠2は、床上をスライド可能な架台6上に設けられており、図1に示すように熱板3の下側の成形位置に対して進退可能となっている。
なお、真空タンク5を設けずに、真空ポンプ51の駆動によって直接吸引させることで真空度を高めるようにしてもよい。
まず、図1に示すように、下枠2の基台22上に配置された基材治具60上に基材10をセットし、該基材10を基材治具60上に被着し保持させる(保持工程)。なお、この状態では、基材治具60はコイルバネ61の作用によって上方に付勢され、基台22上に浮いた状態となっている。
続いて、下枠2の枠上縁部2aにシート4を載置し、下枠2に対して密接させる。すなわち、収容空間Rの開口を塞ぐようにして、下枠2の周壁部21の枠上縁部2aにシート4を固定する。
次いで、図2に示すように熱板3を下方に移動させ、加熱面3aの外周部を、シート4を介して下枠2の枠上縁部2aに密接させる。このとき、シート4は、熱板3の加熱面3aに沿って上面の全面がほぼ接触した状態に配置され、その外周部4aが下枠2と熱板3とによって挟持された状態となる。
具体的には、ヒーター31によって熱板3を加熱するとともに、前記真空タンク5を開放し、通気孔3bを介してシート4を熱板3の加熱面3aに向けて移動する方向(図2で矢印P1方向)に真空吸引する。これにより、加熱面3aにシート4を吸着させ、吸着したシート4を加熱する。
具体的には、熱板3に吸着されたシート4が所定温度に加熱され、所定時間経過した後に熱板3側の真空吸引を止めて吸着動作を停止する。これにより、熱板3とシート4との間が大気開放されるので、シート4を挟んで上下の空間に圧力差が生じる。そのため、図4に示すように加熱によって軟化したシート4が熱板3の加熱面3aから離れ、シート4下側の下枠2の基台22(基材10)に向かって矢印E2方向へ移動し、基材10の表面に押し付けられてこれを被覆し、接着する(接着工程)。
したがって、従来のように基材10からシート4が剥がれたりシート4が破損するのを防止し、生産性を格段に向上させることができる。
また、本実施形態では、移動手段として付勢手段と押圧手段とを備えた構成としたが、このような移動手段に代えて、基材治具60を昇降可能にする移動手段を用いてもよい。
この移動手段としては、例えば基材治具60を昇降可能にする公知のエアーシリンダ機構を用いることができる。ただし、その場合には、エアーシリンダ機構で基材治具60を下降させた際、基材治具60に伴われて基材10も共に下降するよう、基材治具60に基材10を固定する機構、例えば真空吸着などによる固定機構を設けておくのが好ましい。ただし、シート4が基材10に接着した際、その一部が基材治具60の側周面にも接着するため、このシート4を介して基材治具60と基材10とは一体化する。したがって、基材治具60を下降させた際に基材10も共に下降するようになるため、前記の固定機構を省略することもできる。
図5A,5Bに示した成形装置が図1~図4に示した成形装置1と異なるところは、前記移動手段における押圧手段として、加圧タンク7による空気圧を用いるのに代えて、押さえ治具65とプレス機構としての熱板3とを用いた点にある。
その後、基材10上から押さえ治具65を取り除き、以下、第1実施形態と同様にして完成した成形品(シート4を被覆・接着した基材10)を取り出し、一連の成形動作を完了する。
したがって、従来のように基材10からシート4が剥がれたりシート4が破損するのを防止し、生産性を格段に向上させることができる。
図6に示した成形装置が図1~図4に示した成形装置1と異なるところは、前記トリミング手段として、刃80と進退手段81とを備えて構成されている。なお、本実施形態では、基材治具60はその平面視した外形が基材10の平面視した外形とほぼ同じであり、したがって基材治具60の側周面と基材10の外周面とは、ほぼ面一になるように構成されている。
この刃80は、複数の刃が平面視環状に組まれて配置され、それぞれが互いに干渉し合うことなく進退することで、基材10または基材治具60の外周を同時にまたは順次カットし(切り込み)、結果として基材10の外周に位置する余分な部位のシートを除去し、トリミングするようになっている。なお、刃80の周囲には、刃80の側面を覆い、その先端部のみを突出させるとともに、該刃80の進退をガイドするカバー82aが設けられている。また、進退手段81にも、シート4が付着するのを防止するカバー82bが設けられている。
すると、刃80はシート4を切り込んで基材10の側周面に当接する。これにより、基材10の側周面に接着しているシート4はカットされ、シート4のトリミングがなされる。
その後、進退手段81によって刃80を後退させる。これにより、トリミングが終了して成形品を完成する。
以下、第1実施形態と同様にして完成した成形品を取り出し、一連の成形動作を完了する。
したがって、従来のように基材10からシート4が剥がれたりシート4が破損するのを防止し、生産性を格段に向上させることができる。
図7に示した成形装置が図6に示した成形装置と異なるところは、前記トリミング手段を、基材10にシート4を接着する装置に対して移動可能に設けた点である。
本実施形態において、基材10に対してシート4を接着する装置(図示せず)としては、図2に示した成形装置1において、刃63と基材治具60を付勢するコイルバネ61とを除いた構成のものが用いられる。
すると、刃80はシート4を切り込んで例えば基材10の側周面に当接する。これにより、基材10の側周面に接着しているシート4はカットされ、シート4のトリミングがなされる。
次いで、進退手段81によって刃80を後退させる。これにより、トリミングが終了して成形品を完成する。その後、前記の移動機構によってサイドカット装置85を基台22上から初期位置に戻す。
以下、第1実施形態と同様にして完成した成形品を取り出し、一連の成形動作を完了する。
したがって、従来のように基材10からシート4が剥がれたりシート4が破損するのを防止し、生産性を格段に向上させることができる。
例えば、本発明の第1態様の成形装置としては、図2~図4に示したトリミング手段、図5A,5Bに示したトリミング手段、図6に示したトリミング手段、図7に示したトリミング手段のうちの複数を備え、基材10の形態やシート4の性状等に応じてトリミング手段を適宜に選択し、使用できるようにしてもよい。
また、前記実施形態では、基材治具60と刃63とを相対的に移動させる移動手段として、基材治具60を刃63に対して移動させる構成を採用したが、基材治具60を固定し、刃63を移動させるように構成してもよく、両者を共に移動させるように構成してもよい。
また、前記実施形態では、図1に示したように成形装置の下枠2を図1に示すように熱板3の下側の成形位置に対して進退可能、すなわち前後方向にスライドするスライド式としたが、例えば平面視円周状に回転するロータリー方式としてもよい。
このように構成した場合には、下枠2を複数備えることで、基材10へのシート4の接着とトリミングとを並行して行うことができ、生産性をより一層高めることができる。
図9に示すように下枠102の周壁部121の上端(枠上縁部102a)には、収容空間R1の開口を塞ぐようにしてシート104を固定することが可能になっている。
また、下枠102は、床上をスライド可能な架台106上に設けられており、図8に示すように熱板103の下側の成形位置に対して進退可能となっている。
なお、真空タンク105を設けずに、真空ポンプ151の駆動によって直接吸引させることで真空度を高めるようにしてもよい。
まず、図8、図10Aに示すように、下枠102の基台122上に押圧部163を配置固定し、その収容部164内に基材治具160を配置し、さらにこの基材治具160上に基材110をセットして、該基材110を基材治具160上に被着し保持させる(保持工程)。なお、この状態では、基材治具160はコイルバネ161の作用によって上方に付勢され、基台122上に浮いた状態となっている。
続いて、下枠102の枠上縁部102aにシート104を載置し、下枠102に対して密接させる。すなわち、収容空間R1の開口を塞ぐようにして、下枠102の周壁部121の枠上縁部102aにシート104を固定する。
次いで、図9に示すように熱板103を下方に移動させ、加熱面103aの外周部を、シート104を介して下枠102の枠上縁部102aに密接させる。このとき、シート104は、熱板103の加熱面103aに沿って上面の全面がほぼ接触した状態に配置され、その外周部104aが下枠102と熱板103とによって挟持された状態となる。
具体的には、ヒーター131によって熱板103を加熱するとともに、前記真空タンク105を開放し、通気孔103bを介してシート104を熱板103の加熱面103aに向けて移動する方向(図9で矢印P11方向)に真空吸引する。これにより、加熱面103aにシート104を吸着させ、吸着したシート104を加熱する。
具体的には、熱板103に吸着されたシート104が所定温度に加熱され、所定時間経過した後に熱板103側の真空吸引を止めて吸着動作を停止する。これにより、熱板103とシート104との間が大気開放されるので、シート104を挟んで上下の空間に圧力差が生じる。そのため、図11に示すように加熱によって軟化したシート104が熱板103の加熱面103aから離れ、シート104下側の下枠102の基台122(基材110)に向かって矢印E12方向へ移動し、基材110の表面に押し付けられてこれを被覆し、接着する(接着工程)。
なお、熱板103とシート104との間を大気開放する際、図8に示す真空タンク105から加圧タンク107に切り替えることで、熱板103の通気孔103bより圧縮空気を噴出させ、収容空間R1内を加圧するようにしてもよい。ただし、その際の加圧力については、基材治具160を付勢している前記コイルバネ161の付勢力よりも充分に小さい圧とし、基材治具160が下降しないようにする。
また、基材110を基材治具160から取り外すことなくシート104を圧着できるようにし、基材110から延び出た余分な部位のシート104の接着層が手や他の治具、装置などに接着するのを防止しているため、余分な部位のシート104の接着層が手や他の治具、装置などに接着することで生産性が大きく損なわれることがなく、したがって生産性の向上を図ることができる。
また、本実施形態では、移動手段として付勢手段と押圧手段とを備えた構成としたが、このような移動手段に代えて、基材治具160を昇降可能にする移動手段を用いてもよい。
この移動手段としては、例えば基材治具1060を昇降可能にする公知のエアーシリンダ機構を用いることができる。ただし、その場合には、エアーシリンダ機構で基材治具160を下降させた際、基材治具160に伴われて基材110も共に下降するよう、基材治具160に基材110を固定する機構、例えば真空吸着などによる固定機構を設けておく必要がある。
図12A,12Bに示した成形装置が図8~図11に示した成形装置1と異なるところは、前記移動手段における押圧手段として、加圧タンク107による空気圧を用いるのに代えて、押さえ治具165とプレス機構としての熱板103とを用いた点にある。
また、基材110を基材治具160から取り外すことなくシート104を圧着できるようにし、基材110から延び出た余分な部位のシート104の接着層が手や他の治具、装置などに接着するのを防止しているため、余分な部位のシート104の接着層が手や他の治具、装置などに接着することで生産性が大きく損なわれることがなく、したがって生産性の向上を図ることができる。
図13A,13Bに示した成形装置が図8~図11に示した成形装置101と異なるところは、基材治具160として凹部160aを形成したものを用いている点である。
すると、第2態様の第1実施形態と同様に、押圧部163が相対的に基材110の前記底面110aに向けて移動し、図13Bに示すように該底面110a上に接着しているシート104に当接してこれを押圧し、圧着する。すなわち、底面110aと押圧部163の押圧面(上面)との間にシート104を挟持し、これを押しつぶすことにより、シート104を底面110aに圧着させる。
したがって、本実施形態の成形装置およびこれを用いた成形方法にあっては、圧着の際に前記の折曲部Sを凹部160a内に逃がすことにより、基材110の底面110aに対してシート104をむらなく均一に当接させ、かつ、均一な圧力で圧着させることができる。よって、基材110の底面110aに接着するシート104の接着強度をより高め、その剥離を防止してシート104の剥離による不良をより確実に防止することができる。
図14A,14Bに示した成形方法が図8~図11に示した成形装置1による成形方法と異なるところは、基材110として凹状部を形成したものを用いている点である。
すると、第2態様の第1実施形態と同様に、押圧部163が相対的に基材110の前記底面110aに向けて移動し、図14Bに示すように該底面110a上に接着しているシート104に当接してこれを押圧し、圧着する。すなわち、底面110aと押圧部163の押圧面(上面)との間にシート104を挟持し、これを押しつぶすことにより、シート104を底面110aに圧着させる。
そこで、本実施形態では、基材110に段部110bを形成したことにより、図14Bに示すように圧着時に前記の折曲部Sを該段部110b内に逃がし、ここに収容するようにしている。
例えば、第2態様の前記実施形態では、基材110に対してシート104を接着する機構として、熱板加熱方式のものを用いたが、他に例えば、輻射加熱方式のものを用いてもよい。
Claims (10)
- 基台上に設けられた基材治具と、
前記基材治具上に保持された基材に対して被覆された、接着層を有するシートを前記基材に接着する接着手段と、
前記シートを接着した前記基材に対し、該基材を前記基材治具から取り外すことなくその状態で前記シートのトリミングを行うトリミング手段と、を備える成形装置。 - 請求項1に記載の成形装置であって、前記基材治具は、前記基材の外周部が該基材治具の側周面より外側に延出するよう、その側周面が前記基材の外周面より内側となるように前記基材より小さく形成され、
前記トリミング手段は、前記基材治具の側周面より外側に延出した前記基材の外周部の底面に対向して設けられた刃と、前記基材治具と前記刃とを相対的に移動させることで前記基材の外周部の底面と前記刃とを接離可能に移動させる移動手段と、を備えている。 - 請求項2に記載の成形装置であって、前記刃は前記基台に設けられている。
- 請求項2又は3に記載の成形装置であって、前記移動手段は、前記基材治具上に保持された前記基材が前記刃から離間する方向に該基材治具を付勢する付勢手段と、前記基材治具上に保持された前記基材を前記刃に当接する方向に押圧する押圧手段と、を備えている。
- 請求項4に記載の成形装置であって、前記押圧手段は、空気圧を用いて構成されている。
- 請求項4に記載の成形装置であって、前記押圧手段は、押さえ治具と、前記押さえ治具を押圧するプレス機構と、を有する。
- 請求項1に記載の成形装置であって、前記トリミング手段は、前記基材または前記基材治具の側周面、あるいはこれら側周面間に対向して設けられた刃と、前記刃を前記基材または前記基材治具、あるいはこれらの間に向けて進退させる進退手段と、を備えている。
- 基材治具に基材を保持させる保持工程と、
前記基材に接着層を有するシートを被覆し接着する接着工程と、
シートを接着した前記基材を前記基材治具から取り外すことなくその状態で前記シートのトリミングを行うトリミング工程と、を備える成形方法。 - 請求項8に記載の成形方法であって、前記保持工程では、前記基材の外周部が該基材治具の側周面より外側に延出するよう、前記基材治具の側周面が前記基材の外周面より内側となるように前記基材治具に前記基材を保持させ、
前記トリミング工程では、前記基材治具の側周面より外側に延出した前記基材の外周部の底面に対向して設けた刃を、前記基材の外周部の底面に相対的に移動させることにより、該底面上に接着された前記シートをカットすることでトリミングを行う。 - 請求項8に記載の成形方法であって、前記トリミング工程では、前記基材または前記基材治具の側周面、あるいはこれら側周面間に対向して設けた刃を、前記基材または前記基材治具、あるいはこれらの間に向けて進退させることにより、前記基材または前記基材治具上、あるいはこれらの間の上に位置する前記シートをカットすることでトリミングを行う。
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