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WO2002078937A1 - Dispositif de formage preliminaire, procede de formage preliminaire utilisant ce dispositif et procede de formage principal - Google Patents

Dispositif de formage preliminaire, procede de formage preliminaire utilisant ce dispositif et procede de formage principal Download PDF

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Publication number
WO2002078937A1
WO2002078937A1 PCT/JP2001/008286 JP0108286W WO02078937A1 WO 2002078937 A1 WO2002078937 A1 WO 2002078937A1 JP 0108286 W JP0108286 W JP 0108286W WO 02078937 A1 WO02078937 A1 WO 02078937A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
preforming
mold
forming
main
Prior art date
Application number
PCT/JP2001/008286
Other languages
English (en)
Japanese (ja)
Other versions
WO2002078937A9 (fr
Inventor
Kunio Imai
Original Assignee
Kunio Imai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunio Imai filed Critical Kunio Imai
Priority to JP2002577183A priority Critical patent/JP3483551B2/ja
Publication of WO2002078937A1 publication Critical patent/WO2002078937A1/fr
Publication of WO2002078937A9 publication Critical patent/WO2002078937A9/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14008Inserting articles into the mould
    • B29C2045/1404Inserting articles into the mould feeding inserts cut out from an endless sheet outside the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14237Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/001Shaping in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2795/00Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002Printing on articles made from plastics or substances in a plastic state before shaping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping 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
    • B29C51/10Forming by pressure difference, e.g. vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping 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
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/44Removing or ejecting moulded articles

Definitions

  • the present invention relates to a preforming apparatus, a preforming method using the same, and a main molding method.
  • a film with a picture is attached to a main mold of a main molding apparatus, and a preformed apparatus for producing a molded film to obtain a molded article with a picture by supplying a resin to the main mold
  • the present invention relates to a preforming method and a main molding method using the same. That is, the present invention relates to main molding such as so-called insert molding in which the pictorial sheet itself adheres to the surface of the product, or in-mold molding method in which the design of the pictorial sheet is transferred to the surface of the product And it is used for preforming using this.
  • JP-A-59-220232 As a method which can be used for both in-mold and insert molding, and as a method of improving the positional accuracy of the painted film with respect to the mold, the method disclosed in JP-A-59-220232 is known.
  • a pictorial film is disposed on a female mold of a molding machine, and the pictorial film is softened by a radiation heater on the female mold and preformed by vacuum molding, so that it is possible to cope with deep drawing. The position accuracy of the film and the molded product is also good. Then, after preforming, the male die is lowered to carry out injection molding.
  • Japanese Patent Laid-Open No. 6-61 2 7 As a method of manufacturing a parabolic antenna reflecting mirror in which a multilayer film having a metal foil reflecting layer is preformed separately from the main mold and then the main molding is performed, Japanese Patent Laid-Open No. 6-61 2 7 is known. It is done. However, this publication does not use a picture film and is not related to the present invention, but is listed for reference.
  • the object of the present invention is to make the design efficient even for deep-drawing or complex-shaped molded products without subjecting the existing mold in the main molding apparatus to special processing. It is an object of the present invention to provide a pre-forming apparatus which makes it possible to apply, and a pre-forming method and a main forming method using the same.
  • the feature of the preforming apparatus is to attach a painted film to the main mold of the main molding apparatus and to obtain a molded article with a picture by supplying a resin to the main mold.
  • a film supply device for supplying the painted film to a preforming section for performing preforming, proximity to the preforming section, and separation movement, and also before the preforming.
  • a heating device for heating the coated film so as to plasticize it at the preforming section, a preforming mold for preforming the painted film, and a die for removing the film after preforming the painted film.
  • a film die-cutting device for producing a molded film to be inserted into the main mold.
  • the features of the preforming method using the preforming apparatus of the present invention are:
  • the pictured film is supplied to the preforming part by the film feeding device, and a heating device is brought close to the preforming part to plasticize the pictured film, and then the pictured film plasticized by the preformed mold is used.
  • An object of the present invention is to make a molded film for inserting into the main mold by die-cutting a preformed and further molded film.
  • preforming is performed using a preforming mold prior to a forming step for producing a formed product.
  • the painted film is preformed using a preforming mold and then cut out to form a molded film, when the molded film is attached to the main mold, the positional deviation of the pattern is very small. Since pre-forming and die-cutting are performed in parallel with main forming, combined with the ability to quickly attach the forming film to the main forming die, there is almost no loss of forming time, and production efficiency is improved.
  • the existing mold and molding machine can be used, there is no possibility that the quality of the molded product will be deteriorated due to a pressure drop or the like. And since it is sufficient to use a pre-molding apparatus in combination with the existing molding machine, the implementation is extremely easy.
  • the pictured film plasticized with the preformed mold is preformed, so that it is possible to cope with deep drawing with high positional accuracy.
  • the preforming mold it is sufficient for the preforming mold to withstand the heat in the preforming, and it is sufficient if at least a part of the main mold and the main part are substantially the same. Therefore, the preforming mold, which is a preforming mold, can be made very inexpensively using a wood mold, a resin or the like.
  • the multilayer film is heated only at the same time as pressurization without being softened by heating in advance, its shape is gentle and simple. That is, since the object is a reflecting mirror and has a metal reflecting layer, it is possible to pre-form a film having a pattern by means of plasticizing the film by a heating device in order to make it compatible with deep drawing and the like. It is clear that the idea is different.
  • the film die-cutting apparatus is provided with a saw-like blade And is desirable. The pressing force is concentrated on the peaks of the respective chevrons constituting the saw shape, so that the painted film can be punched out more efficiently and reliably.
  • the film die-extracting device comprises: a die-extractable unit capable of causing the blade to move close to the preforming portion; and an elastic body attached to an opposing surface of the preforming die opposed to the blade.
  • the preforming mold and the film die-cutting device are selectively movable close to and away from the preforming portion.
  • the preforming mold By forming the preforming mold with a pair of molds adjacent to each other with the preforming portion interposed therebetween, unnecessary stress and unnecessary displacement of the film can be prevented, and the positional accuracy between the pattern and the three-dimensional shape can be improved.
  • the preforming can be performed while maintaining the In particular, by providing a clamp member for sandwiching the picture film in the preforming part, the film holding and film forming become independent, and a more uniform drawing across the entire circumference of the film. Processing becomes possible.
  • the painted film be oriented substantially horizontally in the preforming section. Even if the drooping occurs due to the plasticization of the painted film due to heating, the drooping of the film does not deviate in the plane direction of the film as in the vertical state of the film. It is because it can be kept good.
  • the lower preforming mold forming the preforming mold be a male mold and be brought close to the preforming portion in the upward direction. It is possible to perform preforming with high accuracy by stabilizing the horizontal position by supporting the hanging part, which has become unstable in position, from the bottom first and then raising the male mold while maintaining the supporting state.
  • the film die removal is performed.
  • the preforming die is preformed with a cutting blade provided in the apparatus
  • the molded film is made by pressing the pictured film supported by the. That is, since the picture-embedded film is sandwiched between the preforming mold and the cutter, the preforming mold is effectively used.
  • the preforming is performed by, for example, vacuum forming or pressure forming.
  • the painted film may have a substrate, a pattern and a protective layer of the pattern.
  • the film supply device delivers the painted film one step at a time. If the control device of the preforming device is subordinate to the timing of the control device of the forming device, control of the preforming device can be performed more reliably.
  • the characteristic of the molding method using the preforming apparatus described in the above-mentioned feature is that the pictured film is preformed by a preforming mold at least a part of which is substantially the same as the main mold of the main molding apparatus, A molded film is produced by the preforming apparatus, and the molded film is inserted into a main mold of the main molding apparatus and then the resin is supplied.
  • recycling is further promoted by making the resin of the painted film the same material as the supplied resin.
  • the present invention can be suitably carried out when the molding is a method for molding a thermoplastic resin.
  • the existing mold in the main forming apparatus is not specially processed. It has become possible to efficiently apply patterns to deep-drawn and complex-shaped molded products.
  • Other objects, constitutions, and effects of the present invention will be clarified in the section "Best Mode for Carrying Out the Invention" described below.
  • FIG. 1 is a side view of a molding system according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG.
  • FIG. 3 is a block diagram of a molding system according to the present invention.
  • Fig. 4 (a) is a perspective view of a molded product with the pattern on the inside, and (b) is a pattern with the pattern on the outside It is a perspective view of the molded article.
  • FIG. 5 is an enlarged cross-sectional view of a molded product molded using a painted film.
  • Figure 6 is a cross-sectional view near the preforming mold showing the procedure of preforming by vacuum forming.
  • A shows the start of heating
  • (b) shows the film formed by suction
  • (c) shows the formed It is a figure which each shows the time of cutting
  • FIG. 7 is an enlarged cross-sectional view in the vicinity of the blade of FIG. 6, where (a) shows a state before cutting and (b) shows a state at the time of cutting.
  • Fig. 8 is a cross-sectional view showing conveyance and molding of the formed film, where (a) is the removal of the formed film from the preforming mold, (b) is the mounting of the formed film to the main mold, and (c) is the It is a figure which shows injection
  • FIG. 9 is a view corresponding to FIG. 2 showing a molding system according to a second embodiment of the present invention.
  • FIG. 10 is a sectional view near the preforming mold showing the procedure of preforming by pressure forming according to the third embodiment of the present invention, wherein (a) is at the start of heating, (b) is for suction by compressed air.
  • (C) is a figure which each shows the time of cutting
  • Fig. 11 (a) shows a state in which the formed film is further cut after Fig. 10, and (b) shows a state in which the formed film is taken out.
  • FIG. 12 is a front view of a preforming apparatus according to a fourth embodiment of the present invention.
  • FIG. 13 is a cross-sectional view taken along the line B-B of FIG.
  • FIG. 14 is a plan view of FIG.
  • FIG. 15 is a plan view showing the relationship between a preforming apparatus, a formed film conveying apparatus, and a main forming apparatus according to a fourth embodiment.
  • FIG. 16 is a front view of an essential part of a preforming apparatus according to a fourth embodiment.
  • FIG. 17 shows a preforming procedure according to the fourth embodiment.
  • FIG. 18 is a front view of an essential part showing a preforming procedure according to a fourth embodiment.
  • Fig. 19 (a) is a longitudinal sectional view in the circle indicated by the symbol c in Fig. 18 (a), and (b) is (a) is a figure which shows the cutting
  • FIG. 20 is a side view of the vicinity of the tip of the extraction blade.
  • FIG. 21 is a side view showing the inclined state of the extraction blade.
  • FIG. 22 is a cross-sectional view showing another embodiment of a mold.
  • the molding system 1 includes a main molding device 2 and a preliminary molding device 3.
  • the preforming device 3 forms the formed film 5 to be inserted into the main forming device 2 by forming and punching the roll-shaped picture film 4.
  • the main molding device 2 includes a clamping device 11 and an injection device 16. Further, the mold clamping device 11 is provided with a movable platen 11 a that can slide through four ports 11 c and a stationary platen 11 b that faces the movable platen 11 a.
  • a movable mold 12 and a fixed mold 13 which are main molds are attached to the movable board 11 a and the fixed board lib, respectively, and injection is performed between the movable mold 12 and the fixed mold 13. Main molding is performed as molding. Actuator 1 4 and the movable plate 1 1 a A movable mold 12 opened and closed via a 1 A fixed mold 1 3
  • a thermoplastic resin is formed from an injection device 1 6 through a hole formed in an actuator 14 Resin is supplied.
  • the preforming apparatus 3 generally includes a frame 21, a preforming mold 22, a film supply apparatus 25, a heating and forming unit 30, a film die removing apparatus 35, and a formed film conveying apparatus 50. Also, the preforming device 3 is straddled through the lower part of the frame 21 and above the movable plate 11a of the main molding device 2 which is configured as a separate ready-made product via the legs 21c. I'm sorry.
  • the preformed mold 2 2 of FIG. 6 and the movable mold 12 of FIG. 8 in this embodiment are molded articles having a painted finolem 1 0 1 inside the curve of the resin 1 0 5 as shown in FIG. 4 (a). It is a molding of 0.
  • the present invention is as shown in FIG. 4 (b).
  • a molded article 100 having a painted film 101 on the curved outer side of the resin 105 may be molded.
  • the sheet is not limited to these, and the sheet may be formed into a more complicated shape or a planar shape.
  • the film with picture 4 is formed by printing on a substrate made of various resin films or the like.
  • a design is a picture, a figure, a character, a symbol, etc., or any combination thereof.
  • a protective layer 1 0 4 for this pattern 1 0 3 is placed on the side of the pattern 1 0 3 on the substrate 1.
  • the resin 105 is injected to the protective layer 104 side, and the substrate 102 side is the surface, but the protective layer 104 side may be the surface.
  • a hard coat processed layer of thermosetting resin such as urethane may be used as the protective layer 104.
  • a B S, P P, P E, P S, P E T, acrylic, P V C, or the like can be used as the resin 105 supplied from the injection device 16 in the main molding device 2.
  • these materials can also be used as the base material 102.
  • by making the resin 105, the base material 102, the pattern 103 and the protective layer 104 the same or the same kind of resin it is possible to promote the recycling of plastic products more easily. It will be.
  • the same case means, for example, a case where resin 105 of A B S is used for a substrate 102 of A B S, a pattern 103 and a protective layer 104.
  • the case of the same family means, for example, the case of using resin 105 of A B S with respect to base material 102 of an acrylic or styrene, pattern 103 and protective layer 104.
  • the preforming mold 22 and the film supply device 25 are attached to the middle of the frame 21.
  • the film supply device 25 comprises: a supply bobbin 26 on which the picture film 4 is wound; a plurality of small rollers 28 having the picture film 4 straddling the opening side of the preforming mold 22; and one pitch of the picture film 4 It is equipped with a photoelectric tube 29 for feeding out (for one process), and a winding povin 27 that takes up the picture film 4 after molding and punching.
  • Windup povin 2 7 is through the takeoff side clutch 2 7a through the takeoff side motor 2 7 b Is driven by winding.
  • the supply bobbin 26 is back tensioned by the supply type motor 26 b via the supply side clutch 26 a.
  • the preforming die 22 is a portion for forming the formed film 5, and a mold portion 22 a, and an air passing the air in the preforming die 22 by the first pump 31.
  • Edge 2 which sandwiches the picture film 4 by the cooperation of the passage 2 2 b and the elastic layer 3 9
  • the preforming mold 22 can be easily made of a thermosetting resin or the like using the wood mold at the time of making the movable mold 1 2. That is, it is sufficient for the preforming mold 22 to have the property and the strength not to be deformed at the time of heating by the heating part 38 of the heat forming means 30 and there is an advantage that it can be manufactured very simply. Further, the movable mold 12 and the preforming mold 22 do not need to be identical to each other, and it is sufficient if the mold 22a and the mold 12a corresponding to the molded film 5 are common or substantially identical. .
  • a rod 3 3 is slidably inserted into 3 a
  • a heating head 3 2 is attached to the mouth 3 3 3
  • a heating head 3 2 serving as a heating device for a film is arranged by a horizontal heater 34.
  • the film die-cut-out device 35 in the heating head 32 comprises a head base 36 and an extruded portion 37 which penetrates the head base 36 in an arc or square shape according to the molding.
  • the elastic layer 39 is deformed so as to be thinner and the picture film 4 is punched out by extruding the extrusion portion 37 to the molded picture film 4 side. Cut into The blade is used for Thomson processing or sealing processing.
  • the cam 41 is driven and rotated by the motor 42, and functions as a push-out mechanism that pushes out the push-out portion 37.
  • the push-out mechanism can also be configured by hydraulic and pneumatic actuators.
  • the heating unit 38 is a heater or the like made of a nichrome wire or carbon, and generates heat when power is supplied from the heating power supply 43 to thermoplasticize the painted film 4.
  • the elastic layer 39 may be made of heat resistant silicone rubber or the like.
  • the formed film transfer device 50 for taking out the formed film 5 formed by the heat forming means 30 from the preforming mold 22 and moving it to the movable die 12
  • Outward part 2 1 a supported by two bearings 5 1 a slide freely supported by mouth 5 1 through a vertical alignment unit 5 2 with adsorption head 5 5 up and down Move it.
  • vertical actuator 5 2 Repeater at the end of the rod 5 1, vertical actuator 5 2
  • the adsorption head 5 5 can be moved in the perspective direction with respect to the preforming mold 22 through the cross-over heater 54.
  • a large number of fine holes are formed on the surface of the adsorption head 55, and the molded film 5 is adsorbed by suction by the adsorption pump 56. Further, the suction head 55 is charged by the charging device 57, and when the molded film 5 is suctioned and conveyed, the entire molded film 5 is charged to electrostatically adsorb the molded film 5 to the movable die 12.
  • the adsorption head 55 may be formed three-dimensionally according to the three-dimensional shape of the molded film 5, or a suction disk made of rubber or resin may be provided on the surface and adsorbed at a plurality of places.
  • the movable mold 12, which is a molding mold, and the actuator 14, which opens and closes the fixed mold 13, are driven by switching the hydraulic direction of the first solenoid valve 46a. Also, this first solenoid valve 4
  • the sequence control of 6 a and the whole of the injection device 16 is performed by the first control device 4 7 a.
  • the horizontal actuator 34 has a second solenoid valve 46b
  • the horizontal actuator 54 has a third solenoid valve 46c
  • the vertical actuator 52 has a fourth solenoid valve 46d.
  • the motors, pumps, etc. of the second solenoid valve 4 6 b, the third solenoid valve 4 6 c, the fourth solenoid valve 4 6 d and the preforming device 3 are controlled by the second controller 4 7 b, respectively.
  • control of the 2nd control device 47 b is performed subordinate to control timing of the 1st control device 4 7 a, and operation of the preforming device 3 cooperates with operation of the main forming device 2 surely. It will be.
  • the operation of the above-described molding system 1 will be described.
  • the picture film 4 is wound up by the take-off side motor 2 7 b and the pick-up povin 2 7, and when the pitch mark of the picture film 4 is detected by the phototube 2 9, the take-up bobbin 2 7 is stationary. Do. At this time, injection molding in the main molding device 2 is performed in parallel.
  • the heating head 32 is close to the preforming mold 22, and the picture film 4 is sandwiched between the edge 22 c and the elastic layer 39, The painted film 4 is plasticized (softened) by the heating unit 38, which is heated by energization.
  • the horizontal actuator 34 in FIG. 1 is driven to separate the heating head 32 from the preforming mold 22, and as shown in FIG. 8 (a), the suction head 55 is preformed 22. Lower the heating head 32. Then, the horizontal actuator 54 is extended to bring the molded film 5 into contact with the adsorption head 55 and operate the suction pump 56 to adsorb the molded film 5 onto the surface of the adsorption head 55. Reduce the factor 5 4
  • the molding is completed between the main mold 2 and the movable mold 12 by extending the vertical actuator 52 to the timing when the movable mold 12 and the fixed mold 13 are released.
  • Irum 5 is transported by suction head 55.
  • the forming film 5 is charged by the charging device 5 7, and the transverse actuator 5 4 is extended to form the movable mold 12.
  • the film 5 is brought close, as shown in FIG. 8 (b), the formed film 5 is attracted to the mold 12a of the movable die 12 by static electricity.
  • the vertical actuator 52 is shrunk to retract the suction head 55 from the vicinity of the movable mold 12, and the actuator 14 in FIG. 3 is extended, as shown in FIG. 8 (c).
  • the resin is filled in the space between the movable mold 12 and the molded film 5 and the fixed mold 13.
  • the product is filled and a molded product with a picture is completed.
  • the present invention can be carried out as insert molding in which the base of the film is not removed after molding, or as in-mold molding in which the base of the film configured as a transfer foil is removed.
  • the preforming device 3 is placed laterally with respect to the main molding device 2.
  • the preforming mold 22, the supply bobbin 26, the take-up bobbin 27 and the actuator 59 are attached to a frame 58 movable by a caster or the like.
  • the preforming mold 22 is disposed at the same height as the movable mold 12 and moves the molded film 5 formed by the preforming mold 22 to the movable mold 12 by the expansion and contraction of the actuator 59. .
  • the molding system 1 is configured using the preforming apparatus 3 according to the present embodiment, the overall height is almost the same as before, so that there is an advantage that it is difficult to be constrained by the layout in a factory.
  • there is also an advantage that the pre-forming device 3 can be easily installed and removed from the existing main forming device 2.
  • the second embodiment shown in FIGS. 10 and 11 is different in that a preforming mold 22 is used as a mold for pressure forming, and a second extraction blade 44 is provided in addition to the extraction blade 40.
  • a preforming mold 22 is used as a mold for pressure forming
  • a second extraction blade 44 is provided in addition to the extraction blade 40.
  • the second pump 45 for suction and compression is used. It is connected.
  • the picture film 4 is sandwiched between the preforming mold 22 and the elastic layer 39, and compressed air is fed in by the first pump 31.
  • the pictured film 4 is brought into close contact with the elastic layer 39 by suction with a second pump 45, and the pictured film 4 is plasticized by the heat generated by the heating unit 38.
  • FIG. 10 (b) When plastic film 4 is sufficiently plasticized, as shown in Fig. 10 (b), picture film 4 is formed by suction by first pump 31 and feeding compressed air by second pump 45. Do. Further, as shown in FIG. 10 (c), the cam 41 is driven to cut the pictorial film 4 with the blade 40 to form a molded finolem 5.
  • the above-mentioned horizontal actuator 34 is further extended and the second extraction blade 4 4 is brought into pressure contact with the edge 22c. Is cut to form a second formed film 6.
  • the heating head 32 is opened and the molded film 5 and the second molded film 6 are removed from the preforming mold 22. Removal of the second molded film 6 also facilitates the removal of the painted film 4 by the removal povin 27. Removal of the second molded film 6 can be performed by an apparatus similar to the above-mentioned molded film conveying apparatus 50.
  • the punching of the second formed film 6 according to the present embodiment can also be applied when preparing a sheet for forming a painted film shown in FIG.
  • the present embodiment can be applied to the vacuum forming described in the first embodiment.
  • the present embodiment is the same as the second embodiment in that the preforming apparatus 3 is placed on the side of the main forming apparatus 2, but the painted film 4 is oriented substantially horizontally in the preforming section and The difference is that the preforming mold and the blade are separate.
  • the molded product is a wash basin, and the deep-drawn molded film 5 is formed, and a picture is provided by insert molding on the bowl surface of the wash basin.
  • the preforming device 3 generally supplies a film 4 with a picture to the frame 61 and winds the film feeder 62 that winds up the film, and clamps the picture 4 with a film at the preforming portion.
  • Clamp member 68, a heating device 70 for heating the picture film 4, a lower preforming unit 7 6 for preforming each other, and an upper spare It has a mold unit 8 2 and a die removal unit 9 1 for punching.
  • the frame 61 passes two cross members 61c and 61c between the pair of lower frames 61b and 61b raised on the frame base 61a, and the opening is formed.
  • a pair of upper frames 61 e, 61 e is provided on the horizontal partition plate 61 d with the opening of the plate 61.
  • the picture film 4 is provided on the air clamp shafts 62a and 62b disposed on the left and right of the lower part of the frame 61 as the supply side film roll 4a and the take-up side film roll 4b. Each is attached and arranged. Also, a back tension and a back tension are applied to the air lamp shaft 62a by the drive mechanism 63, and a winding tension is applied to the air clamp shaft 62b by the drive mechanism 63. Ru.
  • the picture film 4 supplied from the supply side film roll 4a passes through the rocking roller 66a, the photoelectric tube 29 and the plurality of rollers to reach the supply port 64 and crosses the preforming part F horizontally.
  • the swing rollers 6 6 a are The swing roller 6 7 a is disposed at the tip of the arm swinging around the moving shaft 66 b, and the swing roller 6 7 a is disposed at the tip end of the arm swinging around the swing shaft 67 b.
  • the clamp member 68 is made of a steel plate or a heat-resistant material, and has a through hole 68a for passing the lower preforming mold 80, the upper preforming mold 89, or the extraction blade 99.
  • each clamp member 68 is supported by an actuator 69 in the form of a square from the top or bottom, and is driven down and up to clamp the picture film 4 between the two clamp members 6 8 and 6 8.
  • the position of the picture film 4 at the time of clamping is the formed horizontal center plane H, but from the relationship of alignment with the photoelectric tube 2 9, the formed horizontal center plane H is stretched between the supply rollers 6 4, -5 roller 5 It is desirable to align with the position of picture film 4.
  • the heating device 70 is for heating and softening the painted film 4 of the preforming portion F, and has a plurality of heater tubes 71, and is supported by the heating device support plate 70a.
  • the slider slides from the left to the right in FIG. 12 via the guide rails 7 4 a and the slider 7 4 b supported between the pair of upper frames 61 1 e and 6 1 e.
  • the slider 7 3 b is slidably fitted on the guide tube 7 3 a, and the slider 7 3 b moves interlockedly with the slider (not shown) in the guide tube 7 3 a which moves laterally with compressed air. .
  • the guide tube 8 3 a, the slider 8 3 b, the guide tube 9 3 a, the slider 9 3 b also have the same structure as the guide tube 7 3 a, the slider 7 3 b, and have left and right standby positions and a formed vertical center line, respectively.
  • the heating device 70, the upper preforming mold 8 9, and the extraction blade 9 9 are reciprocated at the operation position where the center is aligned with M.
  • a lower preforming mold 76 for moving the lower preforming mold 80 up and down is supported by a pair of support plates 7 6a, 7 6a fixed to the frame 61.
  • Four ball guides 7 7 a are attached to the plate fixed on the support plate 7 6 a, and the movable plate 7 is mounted on the tip of each guide shaft 7 7 b which slides out and retracts to the pole guide 7 7 a.
  • 9 a is fixed.
  • the movable plate 7 9 a is fixed to the drive port 7 8 b of the actuator 7 8 a fixed to the frame 6 1 side together with the ball guide 7 7 a, and the driving of the actuator 7 8 a
  • the lower preforming mold 80 moves up and down together with the movable plate 7 9 a and the spacer 7 9 b.
  • An upper preforming mold 82 2 for moving the upper preforming mold 89 up and down is supported by a slide plate 85 extending between a pair of upper frames 61 e and 61 e.
  • a guide rail 84a is attached to the upper end of each upper frame 61e, and a slide plate 85 is attached via a slider 84b which slidably moves on the guide rail 84a.
  • the above-mentioned guide tube 83a is fixed to the upper frame 61e near the main molding device 2, and a slider 83b for slidably moving the guide tube 83a is a slide plate via a connecting piece 83c. Fixed to 85, slide the slide plate 85 to the position of the forming vertical center line M and the standby position.
  • a movable plate 8 8 a is supported via four ball guides 8 6 a fixed to the slide plate 85 and a guide shaft 86 b slidably inserted in the ball guides 8 6 a.
  • the drive port 8 7 b of the actuator 8 7 a fixed to the slide plate 85 is attached to the movable plate 8 8 a,
  • the preforming mold 89 is moved up and down together with the movable plate 8 8 a and the spacer 8 8 b.
  • the die set 9 1 for moving the removal blade 9 up and down is supported by the slide plate 95 extending between the pair of upper frames 61 1 e and 6 1 e.
  • the slide plate 95 is attached via the slider 94 b which slidably moves the guide rail 84 a.
  • the upper guide tube 9 3 a is fixed to the upper frame 6 1 e on the side far from the main forming device 2, and the slider 9 3 b for slidably moving this is fixed to the slide plate 9 5.
  • Slide 5 to the position of the forming vertical center line M and the standby position.
  • the movable plate 9 8 a is supported via the four ball guides 9 6 a fixed to the slide plate 95 and the guide shaft 9 6 b slidably inserted in the ball guides 9 6 a.
  • the drive rod 9 7 b of the actuator 9 7 a fixed to the slide plate 9 5 is attached to the movable plate 9 8 a, and the blade 9 is moved up and down with the movable plate 9 8 a and the spacer 9 8 b. Move it.
  • the lower preforming mold 80 is a male mold and the upper preforming mold 89 is a female mold. Compressed air is supplied from the lower preforming mold 80 through fine holes (not shown), and suction is performed from the upper preforming mold 89 through fine holes (not shown). Both the male and female molds can be attached to the lower preforming mold 80 and the upper preforming mold 89, and either the suction or the compressed air can be supplied at the top and bottom.
  • Fig. 1 9 (a) is an enlarged view of the portion c in Fig. 18.
  • the blade support plate 9 8 c of the die-cutting unit 9 1 is an upper elastic body 9 8 d made of hard rubber or the like on the lower surface. 9 9 is supported.
  • the blade 9 is a sharp and thin tip of the tip of Rippon steel etc.
  • each yamagata 9 9 a has its peak 9 9 b formed in a side view as shown in FIG. 2 0 (a) (c) and the peak 9 shown in FIG. 2 0 (b).
  • each chevron 9 9 a is formed symmetrically as shown in FIG. 2 0 (a) (b) with respect to a perpendicular line passing through peak 9 9 b.
  • the extraction blade of this shape can also be used for the extraction blade 40 and the second extraction blade 44 in the previous embodiment.
  • a lower elastic body 80c similar to the upper elastic body 98d is attached to the upper surface of the spit portion 80b supporting the projecting portion 80a in the lower preforming mold 80, and the lower elastic body 8
  • the pictorial film 4 is supported by the lower mold upper surface S2 which is the upper surface of 0c, and the tip of the blade 9 is received in the lower recess 80d, and the pictorial film 4 is cut at the position of X. That is, the die-cutting apparatus is composed of the die-cut sheet 91 and the flange 80 b of the lower preforming die 80.
  • the cutting edge 999 is serrated or straight relative to the lower mold upper surface S2 described above, it is also possible to apply a gentle slope to its cutting edge 9 9c. It is possible to improve the cutting ability.
  • the upper surface of the lower preform 80 of the lower preform 80 (the upper surface of the lower elastic body 80 c (upper surface S 2 of the lower mold)) and the upper preform 8 It is necessary to align the lower surface 8 9 a of 9 (upper die lower surface S 1) and the lower surface of the upper elastic body 9 8 d (lower blade support lower surface S 3) with the forming horizontal center plane H, Alignment according to the mold and blade is adjusted by the thickness of spacer 7 9 b, spacer 1 8 8 b, and spacer 9 8 b.
  • the printed picture film 4 is sent to the right by the nip roller 65 according to the above-mentioned procedure by one pitch until the film mark is detected. Then, as shown in FIG. 17 (a), clamp members 68 and 68 are brought close to each other and sandwich the picture film 4 with them. At this time, it is desirable from the viewpoint of the positioning accuracy by the film mark that the central surface of the picture film 4 stretched between the feed rollers 6 4. By sandwiching the picture film 4 with the clamp members 68 and 68, it is possible to improve the molding processing accuracy described later.
  • the clamp member 68 can block the back tension of the supply side film roll 4a, and can heat the painted film 4 without stress.
  • the heating device 70 is moved onto the clamp member 68 to heat the picture film 4 clamped through the through hole 6 8a.
  • the picture film 4 once hangs down as indicated by a dot-and-dash line indicated by reference numeral 4 D, and returns to its original position by further heating.
  • lower preformed mold 80 is pressed until the upper surface of the integral part with spit 80 b is made to coincide with the formed horizontal center plane H as shown in FIG. 17 (b). Raise it. Since the lower part 4D of the picture film 4 clamped by the clamp member 6 8 is pushed up by the protruding part 80a of the lower preforming mold 80 almost uniformly, the pattern of the picture film 4 is molded without distortion. be able to.
  • the die-cut unit 91 When cutting is completed, the die-cut unit 91 is returned to the original standby position, and the molded film 5 is picked up by the suction head 55 of the molded film conveying unit 50 described above as shown in FIG. 18 (b). .
  • a general-purpose formed film transfer device 50 is used, and the rail 50a is attached to the main forming device 2 and the previous formed film 5 is transferred to the movable mold (mold) 1 2 Make it fit.
  • the formed film 5 When moving the formed film 5 from the clamp member 68, the formed film 5 is brought into contact with the charging device 5 7 to charge the film, thereby facilitating adsorption to the movable mold 12. Then lower the lower preforming mold 80 and move the clamp members 68 and 68 away from each other as shown in FIG. 18 (c).
  • the film 4 is peeped to the right by one pitch, and the above operation is repeated.
  • the lower surface 8 9 a of the upper preforming mold 8 9 is located above the forming horizontal center plane H in all parts. If, as shown in FIG. 22, the portion outside the cut portion X of the painted film 4 substantially coincides with the formed horizontal center plane H, a part of the formed film 5 shown by the reference numeral 4 w It does not have to be located in the plane of the forming horizontal center plane H, such as below the forming horizontal center plane H.
  • injection molding is performed by the main molding device 2.
  • any molding method using a thermoplastic resin molding machine may be used.
  • a blow molding method may be used.
  • a roll-shaped film is used as the painted film 4.
  • the painted film 4 a sheet-like film pressed to a desired shape is used. You may use.
  • the film supply device 25 can be substituted by a formed film transfer device 50 or a similar device.
  • the film mark is detected by the photoelectric tube 29 to determine the film feed amount for one step.
  • the film feed amount for one process may be determined by controlling the operation time and take-up amount of the film extraction device. .
  • the upper elastic body 98 d and the lower elastic body 80 c are made of hard rubber.
  • the material of these elastic members may be any material as long as it does not damage the cutting blade 99.
  • various materials such as a heat resistant synthetic resin such as silicon can be appropriately used.
  • the reference numerals in the claims are merely for the purpose of making the contrast with the drawings more convenient, and the present invention is not limited to the configuration of the attached drawings.
  • the present invention is used for both main molding such as so-called insert molding in which the picture sheet itself adheres to the surface of the product and in-mold molding method in which the picture of the picture sheet is transferred to the surface of the product.
  • the molded product can be applied to a picture pattern on both the inner and outer surfaces of a molded product having a deep drawing portion as well as one having a flat shape in all fields.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un dispositif de formage préliminaire permettant d'appliquer avec efficacité une structure même sur un produit embouti ou de forme complexe sans application d'un outil spécial sur un moule en métal existant d'un dispositif de formage préliminaire. Elle concerne aussi un procédé de formage utilisant le dispositif de formage préliminaire ainsi qu'un procédé de formage principal. Le dispositif de formage préliminaire comprend une unité qui fournit un film (25), possédant une structure (4), dans un espace de formage préliminaire (F) aux fins de réaliser un formage préliminaire, une unité de chauffage (30) pouvant être approchée ou éloignée de l'espace de formage préliminaire, servant à chauffer le film possédant une structure, avant le formage préliminaire, l'amenant plastifié à l'espace de formage préliminaire (F), un moule de formage préliminaire (22) destiné à former le film possédant une structure, et un distributeur (50) de film de formage destiné à libérer le film du moule après formage préliminaire du film possédant une structure et à insérer le film dans un moule de formage principal, dans lequel, après insertion du film de formage, on injecte de la résine afin d'obtenir un produit formé avec une structure, le formage préliminaire étant réalisé sous vide ou au moyen d'air comprimé.
PCT/JP2001/008286 2000-09-22 2001-09-25 Dispositif de formage preliminaire, procede de formage preliminaire utilisant ce dispositif et procede de formage principal WO2002078937A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002577183A JP3483551B2 (ja) 2000-09-22 2001-09-25 予備成形装置並びにこれを用いた予備成形方法及び主成形方法

Applications Claiming Priority (4)

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JP2000288565 2000-09-22
JP2000-352469 2000-11-20
JP2000-288565 2000-11-20
JP2000352469 2000-11-20

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WO2002078937A1 true WO2002078937A1 (fr) 2002-10-10
WO2002078937A9 WO2002078937A9 (fr) 2004-08-05

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CN108773087A (zh) * 2018-04-27 2018-11-09 罗松 一种直立式发泡产品造型加工机器及造型加工方法

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JP4872876B2 (ja) * 2007-09-28 2012-02-08 大日本印刷株式会社 インサート加飾成形品の製造方法
US9375867B2 (en) * 2011-06-20 2016-06-28 Jnc Corporation Transfer film for in-mold molding and method for producing same
WO2014098194A1 (fr) 2012-12-19 2014-06-26 東芝機械株式会社 Dispositif de transport, dispositif de fabrication d'article moulé, et procédé de fabrication d'article moulé
CN104608185B (zh) * 2015-01-27 2016-04-20 常州信息职业技术学院 音膜承压件冲压和激光辐照复合成形加工装置及其方法
CN105169778A (zh) * 2015-09-25 2015-12-23 重庆大嘉富食品有限公司 饮料过滤机构
EP4159403A3 (fr) * 2017-04-04 2023-06-14 Dai Nippon Printing Co., Ltd. Mécanisme de maintien de matériau de base, dispositif de transport, élément de maintien, système de moulage de matériau de base, procédé de maintien de matériau de base et procédé de moulage de matériau de base

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JPS6163424A (ja) * 1984-09-05 1986-04-01 Dainippon Printing Co Ltd 熱硬化性樹脂射出成形同時化粧方法
JPS62212107A (ja) * 1986-03-14 1987-09-18 Dainippon Printing Co Ltd 絵付樹脂製品の製造装置
JPH0269213A (ja) * 1988-09-05 1990-03-08 Sumitomo Bakelite Co Ltd 容器
JPH06114881A (ja) * 1992-10-09 1994-04-26 Kansei Corp 表皮材貼合成形装置
JP2000052376A (ja) * 1998-08-11 2000-02-22 Nissha Printing Co Ltd フィルムインサート成形法とこれに用いるフィルムカット装置
JP2000052416A (ja) * 1998-08-11 2000-02-22 Nissha Printing Co Ltd フィルムインサート成形法とこれに用いる予備成形用型
JP2001219455A (ja) * 1999-07-05 2001-08-14 Bridgestone Corp 合成樹脂製成形体およびその製法

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JPS6163424A (ja) * 1984-09-05 1986-04-01 Dainippon Printing Co Ltd 熱硬化性樹脂射出成形同時化粧方法
JPS62212107A (ja) * 1986-03-14 1987-09-18 Dainippon Printing Co Ltd 絵付樹脂製品の製造装置
JPH0269213A (ja) * 1988-09-05 1990-03-08 Sumitomo Bakelite Co Ltd 容器
JPH06114881A (ja) * 1992-10-09 1994-04-26 Kansei Corp 表皮材貼合成形装置
JP2000052376A (ja) * 1998-08-11 2000-02-22 Nissha Printing Co Ltd フィルムインサート成形法とこれに用いるフィルムカット装置
JP2000052416A (ja) * 1998-08-11 2000-02-22 Nissha Printing Co Ltd フィルムインサート成形法とこれに用いる予備成形用型
JP2001219455A (ja) * 1999-07-05 2001-08-14 Bridgestone Corp 合成樹脂製成形体およびその製法

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Publication number Priority date Publication date Assignee Title
CN108773087A (zh) * 2018-04-27 2018-11-09 罗松 一种直立式发泡产品造型加工机器及造型加工方法

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WO2002078937A9 (fr) 2004-08-05
CN1242877C (zh) 2006-02-22
JPWO2002078937A1 (ja) 2004-07-22
JP3483551B2 (ja) 2004-01-06
CN1525909A (zh) 2004-09-01

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