WO2010140251A1 - Die for continuous in-mold molding and continuous in-mold molding method - Google Patents

Die for continuous in-mold molding and continuous in-mold molding method Download PDF

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Publication number
WO2010140251A1
WO2010140251A1 PCT/JP2009/060331 JP2009060331W WO2010140251A1 WO 2010140251 A1 WO2010140251 A1 WO 2010140251A1 JP 2009060331 W JP2009060331 W JP 2009060331W WO 2010140251 A1 WO2010140251 A1 WO 2010140251A1
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WO
WIPO (PCT)
Prior art keywords
synthetic resin
mold
resin sheet
die
molding
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PCT/JP2009/060331
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French (fr)
Japanese (ja)
Inventor
浩司 山本
公靖 吉坂
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株式会社サカイヤ
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Priority to PCT/JP2009/060331 priority Critical patent/WO2010140251A1/en
Publication of WO2010140251A1 publication Critical patent/WO2010140251A1/en

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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection 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
    • B29C45/1418—Injection 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
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/06—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert

Definitions

  • the present invention relates to a molding die for manufacturing a synthetic resin molded product using an in-mold molding method and a molding method for manufacturing a synthetic resin molded product using an in-mold molding method. More specifically, the present invention relates to a molding die and a manufacturing method of a synthetic resin molded product that can improve the production efficiency of the synthetic resin molded product using an in-mold molding method.
  • synthetic resin molded products that are directly touched by the user's eyes or directly touched by the user have been provided with a design surface having a smooth surface on the surface of the synthetic resin in order to improve decorativeness and touch. It is coming.
  • Such synthetic resin molded products include automobile interior parts and home appliances, or accessory parts for automobiles and home appliances.
  • a synthetic resin sheet having a printed layer that forms the design surface is used as a skin material on the inner surface of the mold in advance.
  • the synthetic resin molded product having a beautiful design surface is manufactured by injecting the molten synthetic resin to the back side of the synthetic resin sheet, and fusing and integrating the synthetic resin sheet and the molten synthetic resin.
  • a manufacturing method called a molding method has been adopted.
  • the in-mold molding method has a high degree of design freedom and can maintain a high design position accuracy.
  • Transparent design also known as backlighting, the design part where the printed design and characters appear brightly when viewed from the front and light from the back or side of the molded product
  • it has an advantage that it is possible to adjust the degree of light transmission of the transmissive design part by controlling the printing state of the pattern and characters. Also, by improving the manufacturing conditions of the in-mold molding method, it is possible to make the weld lines and gate marks generated in the synthetic resin molded product invisible.
  • the synthetic resin sheet provided with the printed layer forming the design surface is arranged in advance so as to be along the inner surface of the injection mold. Therefore, before the injection molding step, the synthetic resin sheet needs to be drawn in advance along the inner surface of the injection mold and shaped in advance. Further, after shaping the synthetic resin sheet, the shaped synthetic resin sheet needs to be trimmed and cut and separated so as to have a predetermined shape and size. (This trimming can also be performed after injection molding of the molten synthetic resin.) Furthermore, when molding a synthetic resin molded product, the synthetic resin sheet shaped each time on the inner surface of the injection mold is placed in a predetermined position. It was necessary to arrange after alignment. Such a complicated process has been an obstacle for reducing the manufacturing cost of a resin product molded by the in-mold molding method.
  • the present invention has been made to solve such a problem. That is, a mold or a manufacturing method for manufacturing using an in-mold molding method in which a synthetic resin sheet having a printed layer forming a design surface is used as a skin material, and a step of shaping the synthetic resin sheet;
  • An object of the present invention is to provide a synthetic resin molding die and a synthetic resin molding method capable of simultaneously performing the step of injecting a molten synthetic resin.
  • a synthetic resin molding die and a synthetic resin molding method capable of simultaneously trimming the molded synthetic resin sheet portion and cutting and separating from the synthetic resin sheet main body are provided. This is the issue.
  • an object is to automatically and continuously supply the synthetic resin sheet and the shaped synthetic resin sheet to a predetermined position of the mold.
  • the synthetic resin sheet is arranged in advance along the inner surface of the mold and melted in a space defined by the mold and the synthetic resin sheet.
  • a mold for injecting a synthetic resin and molding a synthetic resin molded product integrated with the synthetic resin sheet comprising a first mold and a second mold, A first area and a second area are arranged in each of the first mold and the second mold, and a drawing mold for shaping the synthetic resin sheet is arranged in the first area.
  • a molded synthetic resin sheet is arranged, and then a molding die for injecting a molten synthetic resin is used as a synthetic resin molding die.
  • the molding die disposed in the second region is a synthetic resin molded from a synthetic resin sheet.
  • the synthetic resin molding die according to claim 1 or 2 in the first mold and the second mold, the position of the synthetic resin sheet A synthetic resin molding die having a configuration in which at least one protrusion portion for matching and at least one recess portion corresponding to the protrusion is provided.
  • the synthetic resin sheet is composed of a continuous synthetic resin sheet.
  • the synthetic resin sheet is arranged in advance along the inner surface of the mold, and the molten synthetic resin is injected into a space defined by the mold and the synthetic resin sheet.
  • a step of feeding a synthetic resin sheet between a first mold and a second mold, and the first mold and the second mold The step of shaping the synthetic resin sheet with the drawing die provided in the first area of the first mold and the shaping mold provided in the second area of the first mold and the second mold Placing the molded synthetic resin sheet and then injecting a molten synthetic resin; and a synthetic resin molding method comprising: shaping the synthetic resin sheet with the drawing mold; and And placed the shaped synthetic resin sheet Thereafter, the synthetic resin molding method is configured to simultaneously perform the step of injecting the molten synthetic resin.
  • the synthetic resin molding method according to claim 6 after placing the shaped synthetic resin sheet into the mold, the molten synthetic resin is added.
  • the step of injecting is a synthetic resin molding method configured to further include a step of cutting and separating a portion of the synthetic resin sheet formed from the synthetic resin sheet.
  • the step of feeding the synthetic resin sheet between the first mold and the second mold includes The synthetic resin molding method further includes a step of aligning the synthetic resin sheet with respect to the first mold and the second mold.
  • the synthetic resin molding method according to claim 6 or 7, wherein the synthetic resin sheet used in the method is a continuous synthetic resin sheet It was a method.
  • a synthetic resin molding die and a synthetic resin molding method capable of simultaneously performing a step of shaping a synthetic resin sheet and a step of injecting a molten synthetic resin.
  • the synthetic resin molding mold and the synthetic resin molding capable of trimming the molded synthetic resin sheet portion and cutting and separating from the synthetic resin sheet main body. It became possible to provide a method.
  • the synthetic resin sheet was shaped and shaped to the position of the drawing die (first region) and the mold (second region)
  • the synthetic resin sheet can be automatically and continuously supplied while aligning with the mold.
  • FIG. 1 shows a basic form of a synthetic resin molding die according to the present invention.
  • FIG. 2 shows a cross section AA of the synthetic resin molding die shown in FIG.
  • FIG. 3 illustrates a process for molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 4 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 5 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 6 illustrates a process for molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 7 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 8 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention.
  • FIG. 9 is a diagram showing details of a synthetic resin molding die provided with a blade for trimming
  • FIG. 1 shows a basic form of a synthetic resin molding die according to the present invention.
  • FIG. 2 shows a cross section AA of the synthetic resin molding die shown in FIG.
  • the synthetic resin molding die according to the present invention includes a first die (core die) 20 and a second die (cavity die) 30.
  • Each of the first mold (core mold) 20 and the second mold (cavity mold) 30 has a first region 100 provided on the upper stage side of the mold and a second area provided on the lower stage side of the mold.
  • the area 200 is included.
  • a drawing die for shaping the synthetic resin sheet is arranged.
  • a synthetic resin sheet used in an in-mold molding method (a molding method for producing a synthetic resin molded product by fusing and integrating a synthetic resin sheet and a molten synthetic resin) is previously matched with the shape of the molding die.
  • This is a mold for shaping.
  • a synthetic resin sheet 41 is shaped by a combination of a male die 21 and a female die 31 as shown in FIG.
  • the first region 100 is provided with at least one protrusion 35 for positioning the synthetic resin sheet 41 for shaping by drawing and at least one recess 25 corresponding thereto.
  • the recess 25 is provided on the first mold 20 side and the protrusion 35 is provided on the second mold 30 side, but the protrusion 35 is provided on the first mold 20 side.
  • the recess 25 may be provided on the second mold 30 side.
  • a molding die for molding a synthetic resin molded product by an in-mold molding method is arranged.
  • This mold comprises a core part 23 provided on the first mold 20 side and a cavity part 33 provided on the second mold 30 side.
  • An injection molding nozzle, a sprue 32, and a gate 22 are provided as a passage for press-fitting molten synthetic resin.
  • a synthetic resin sheet 41 shaped in the drawing die arranged in the first region 100 is inserted into the cavity portion 33 of the mold, and is formed by the shaped synthetic resin sheet 41 and the core portion 23.
  • a molten synthetic resin is press-fitted into the space, and a synthetic resin molded product is formed.
  • an ejector pin 24 for taking out the molded product from the mold may be provided in the second region of the synthetic resin molding die.
  • the temperature of the synthetic resin sheet for drawing is heated to an appropriate temperature, and the temperature profile of the molten synthetic resin to be press-fitted is appropriately maintained.
  • a device for controlling the temperature of the mold may be added.
  • a pattern or a character may be printed in advance in order to give a decorative property. This printing may be printed on only one side of the synthetic resin sheet 41, or may be printed on both sides to give a three-dimensional effect. In the case of backlighting (also referred to as transparent design), a translucent or non-translucent pattern or character is printed simultaneously on the backlit area (transparent design portion) of the synthetic resin sheet. You can also.
  • a drawing die is arranged in the first region 100 provided on the upper side of the die, and a molding die is provided in the second region 200 provided on the lower side of the die.
  • the present invention is not limited to this, and a forming die may be arranged in the first region 100 and a drawing die may be arranged in the second region 200.
  • the synthetic resin molding die shown in FIGS. 1 and 2 has a configuration in which four identical parts are taken, that is, a configuration in which four sets of the same shape drawing die and four sets of the same shape molding are arranged.
  • the present invention is not limited to this. ⁇ ⁇ One set each of the same shape of the drawing die and molding die may be arranged, or a plurality of drawing die sets having different shapes and a plurality of molding die sets corresponding thereto may be provided.
  • FIG. 3 shows a state in which the synthetic resin sheet 41 is set in the first region 100 where the drawing die of the second mold 30 is arranged.
  • the synthetic resin sheet 41 and the second mold 30 are fitted in advance by providing holes in the synthetic resin sheet 41 in accordance with the projections 35 provided on the second mold 30 side. May be aligned.
  • FIG. 4 shows that the first mold 20 and the second mold 30 were clamped after setting the synthetic resin sheet 41 in the first region where the drawing mold of the second mold 30 was arranged.
  • the synthetic resin sheet 41 is shaped by a combination of the male mold 21 and the female mold 31.
  • FIG. 5 shows a state in which the first mold 20 and the second mold 30 are released after shaping the synthetic resin sheet 41.
  • the shaped synthetic resin sheet 41 is taken out from the first region 100 where the aperture die is arranged.
  • FIG. 6 shows that the molded synthetic resin sheet 41 taken out from the first region 100 where the drawing die is arranged is set in the second region 200 where the molding die is arranged, and the first drawing die is further arranged.
  • the state where a new synthetic resin sheet 41 is set in the region 100 is shown.
  • the shaped synthetic resin sheet 41 and the new synthetic resin sheet 41 are fitted into the projections 35 provided on the second mold 30 side and the holes provided in the synthetic resin sheet, so that the second Alignment with the mold 30 may be performed.
  • FIG. 7 shows that the already formed synthetic resin sheet 41 is set in the second area where the mold of the second mold 30 is arranged, and the first area where the drawing die of the second mold 30 is arranged.
  • a state where the first mold 20 and the second mold 30 are clamped after the new synthetic resin sheet 41 is set is shown.
  • the new synthetic resin sheet 41 is shaped by the combination of the male mold 21 and the female mold 31.
  • the molten synthetic resin is used for injection molding.
  • the space formed by the synthetic resin sheet 41 press-fitted through the nozzle, sprue 32 and gate 22 and the core portion 23 on the second mold 30 side is filled with the molten synthetic resin 42.
  • the molten synthetic resin 42 is cooled in the mold, it is solidified and a synthetic resin molded product integrated with the synthetic resin sheet is completed.
  • FIG. 8 shows a state in which the first mold 20 and the second mold 30 are released after the molten synthetic resin 42 is cooled and solidified in the mold.
  • the synthetic resin molded product integrated with the synthetic resin sheet is taken out from the mold, and further, the shaped synthetic resin sheet 41 is taken out from the first region 100 where the drawing die is arranged.
  • the synthetic resin molded product may be extruded from the mold by using the ejector pins 24 arranged in the second region of the first mold 20.
  • the synthetic resin molded product integrated with the synthetic resin sheet and the synthetic resin sheet can be formed at the same time.
  • FIG. 9 is a view showing details of the synthetic resin molding die in such a case.
  • a blade 36 is arranged on the outer periphery of the cavity portion 33 provided in the second region 200.
  • the first mold 20 may be provided with a relief groove of the blade 36 in correspondence with the blade 36 provided in the second mold 30.
  • a synthetic resin molded product integrated with the synthetic resin sheet 41 is molded. In this case, it becomes possible to complete the trimming of the synthetic resin sheet 41 in the stage of clamping the first mold 20 and the second mold 30, and the portion of the synthetic resin sheet shaped from the synthetic resin sheet Can be cut and separated.
  • Each consisted of a separate sheet.
  • a continuous synthetic resin sheet for example, a continuous synthetic resin sheet 41 wound in a roll shape.
  • both ends of the continuous synthetic resin sheet 41 wound in a roll shape are provided with holes for sprockets at predetermined intervals in advance, and the second mold 30 and the second mold 30 are aligned with the holes for the sprockets.

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

Abstract

Disclosed is a molding die for synthetic resin molded articles, which can improve the production efficiency of synthetic resin molded articles using an in-mold molding process.  A method for producing synthetic resin molded articles is also disclosed. A die for molding an synthetic resin molded article integrated with a synthetic resin sheet is composed of a first die and a second die.  The first die and the second die respectively have a first region and a second region.  The first region is provided with a drawing die for molding the synthetic resin sheet, and the second region is provided with a molding die for injection molding a molten synthetic resin after arranging the molded synthetic resin sheet therein.

Description

連続インモールド成形型および連続インモールド成形方法Continuous in-mold mold and continuous in-mold molding method
　本発明は、インモールド成形法を利用した合成樹脂成形品を製造するための成形型およびインモールド成形法を利用した合成樹脂成形品を製造するための成形方法に係るものである。　更に詳細には、インモールド成形法を利用した、合成樹脂成形品の生産効率を向上させることができる合成樹脂成形品の成形型および製造方法に係るものである。 The present invention relates to a molding die for manufacturing a synthetic resin molded product using an in-mold molding method and a molding method for manufacturing a synthetic resin molded product using an in-mold molding method. More specifically, the present invention relates to a molding die and a manufacturing method of a synthetic resin molded product that can improve the production efficiency of the synthetic resin molded product using an in-mold molding method.
　近年、直接ユーザーの目に触れ、あるいはユーザーが直接手に触れる合成樹脂成形品においては、装飾性や触感を向上させるために、合成樹脂表面に平滑な面を持った意匠面を設けるようになってきている。　このような合成樹脂成形品としては、自動車の内装品や家電製品、あるいは自動車や家電製品のアクセサリ部品などがある。 In recent years, synthetic resin molded products that are directly touched by the user's eyes or directly touched by the user have been provided with a design surface having a smooth surface on the surface of the synthetic resin in order to improve decorativeness and touch. It is coming. Such synthetic resin molded products include automobile interior parts and home appliances, or accessory parts for automobiles and home appliances.
　このような合成樹脂成形品の装飾性を高めるために、これまでは射出成形等によって成形された合成樹脂成形品の外表面に後から印刷、塗装を施して仕上げるのが一般的であった。 In order to enhance the decorativeness of such a synthetic resin molded product, it has been common to finish the outer surface of the synthetic resin molded product formed by injection molding or the like after printing and painting.
　しかし最近では、外観品質や、外観品質の耐久性を高め、更には製品コストを低減するために、意匠面をなす印刷層を備えた合成樹脂シートを表皮材として成形金型の内側面に予め配置し、その合成樹脂シートの裏面側に溶融した合成樹脂を射出し、この合成樹脂シートと溶融合成樹脂を融着一体化させることにより、綺麗な意匠面を有する合成樹脂成形品を製造するインモールド成形法という製造方法が採用されてきている。 However, recently, in order to improve the appearance quality and durability of the appearance quality, and further reduce the product cost, a synthetic resin sheet having a printed layer that forms the design surface is used as a skin material on the inner surface of the mold in advance. The synthetic resin molded product having a beautiful design surface is manufactured by injecting the molten synthetic resin to the back side of the synthetic resin sheet, and fusing and integrating the synthetic resin sheet and the molten synthetic resin. A manufacturing method called a molding method has been adopted.
　インモールド成形法は、意匠の自由度が高く、また意匠の位置精度を高く維持することが可能である。　また、透過意匠（バックライティングとも言い、成形品の後方あるいは横方向から光を当て、これを前面から見た場合に、印刷された絵柄や文字が明るく浮かびあがって見える意匠部分のことを言う）を設けることも可能である。（特許文献１参照）　更に、絵柄や文字の印刷状態を制御することにより透過意匠部の光の透過の程度を調節することも可能になるなどの長所を有している。　また、インモールド成形法の製造条件を改良することによっては、合成樹脂成形品に生じるウェルドラインやゲートマークを外観上見えなくなるようにすることも可能となる。 The in-mold molding method has a high degree of design freedom and can maintain a high design position accuracy. Transparent design (also known as backlighting, the design part where the printed design and characters appear brightly when viewed from the front and light from the back or side of the molded product) It is also possible to provide. (See Patent Document 1) Further, it has an advantage that it is possible to adjust the degree of light transmission of the transmissive design part by controlling the printing state of the pattern and characters. Also, by improving the manufacturing conditions of the in-mold molding method, it is possible to make the weld lines and gate marks generated in the synthetic resin molded product invisible.
　しかし、このような従来のインモールド成形法にあっては、意匠面をなす印刷層を備えた合成樹脂シートが射出成形金型の内側面に沿うようにして、予め配置してやることが必要であるため、射出成形の工程前に、合成樹脂シートを射出成形金型の内側面に沿うように絞り加工を行って、予め賦形しておくことが必要になる。　また、合成樹脂シートを賦形した後にその賦形した合成樹脂シートをトリミングして所定の形状、寸法を有するように切断分離させる必要があった。(このトリミングは、溶融合成樹脂を射出成形した後に行うこともできる。)　更に、合成樹脂成形品を成形する際に、射出成形金型の内面にその都度賦形した合成樹脂シートを所定位置に位置合わせをした上で配置してやることが必要であった。　このような複雑な工程が、インモールド成形法によって成形された樹脂製品の製造コストを低減するための障害となっていた。
　 However, in such a conventional in-mold molding method, it is necessary that the synthetic resin sheet provided with the printed layer forming the design surface is arranged in advance so as to be along the inner surface of the injection mold. Therefore, before the injection molding step, the synthetic resin sheet needs to be drawn in advance along the inner surface of the injection mold and shaped in advance. Further, after shaping the synthetic resin sheet, the shaped synthetic resin sheet needs to be trimmed and cut and separated so as to have a predetermined shape and size. (This trimming can also be performed after injection molding of the molten synthetic resin.) Furthermore, when molding a synthetic resin molded product, the synthetic resin sheet shaped each time on the inner surface of the injection mold is placed in a predetermined position. It was necessary to arrange after alignment. Such a complicated process has been an obstacle for reducing the manufacturing cost of a resin product molded by the in-mold molding method.
　　特開2002-178362号公報
　 JP 2002-178362 A
　本発明はかかる問題を解決するためになされたものである。　即ち、意匠面をなす印刷層を備えた合成樹脂シートを表皮材として使用するインモールド成形法を使用して製造するための金型又は製造方法であって、合成樹脂シートを賦形する工程と、溶融合成樹脂を射出する工程を同時に行うことができる合成樹脂成形用金型と合成樹脂成形方法を提供することを課題とする。 The present invention has been made to solve such a problem. That is, a mold or a manufacturing method for manufacturing using an in-mold molding method in which a synthetic resin sheet having a printed layer forming a design surface is used as a skin material, and a step of shaping the synthetic resin sheet; An object of the present invention is to provide a synthetic resin molding die and a synthetic resin molding method capable of simultaneously performing the step of injecting a molten synthetic resin.
　また、この溶融合成樹脂を射出する工程において、同時に、賦形した合成樹脂シート部分のトリミングを行い合成樹脂シート本体から切断分離させることができる合成樹脂成形用金型と合成樹脂成形方法を提供することを課題とする。 Further, in the step of injecting the molten synthetic resin, a synthetic resin molding die and a synthetic resin molding method capable of simultaneously trimming the molded synthetic resin sheet portion and cutting and separating from the synthetic resin sheet main body are provided. This is the issue.
　更に、賦形した合成樹脂シートを成形型の所定位置に正確に配置するための合成樹脂シートの位置合わせが容易に行うことができる合成樹脂成形用金型と合成樹脂成形方法を提供することを課題とする。 Furthermore, it is intended to provide a synthetic resin molding die and a synthetic resin molding method capable of easily aligning the synthetic resin sheet for accurately arranging the shaped synthetic resin sheet at a predetermined position of the molding die. Let it be an issue.
　また、合成樹脂シート、および賦形された合成樹脂シートを、金型の所定位置へ自動的に連続して供給することを課題とする。 Also, an object is to automatically and continuously supply the synthetic resin sheet and the shaped synthetic resin sheet to a predetermined position of the mold.
　上述したような課題を解決するために、請求項1に記載された発明においては、合成樹脂シートを予め金型内面に沿って配置し、金型と合成樹脂シートによって画成される空間に溶融合成樹脂を射出し、当該合成樹脂シートと一体化した合成樹脂成形品を成形するための金型であって、当該金型は第一の金型と第二の金型から構成され、当該第一の金型と第二の金型のそれぞれには、第一の領域と第二の領域が配置され、当該第一の領域には、合成樹脂シートを賦形するための絞り型を配置し、当該第二の領域には、賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するための成形型を配置する構成の合成樹脂成形用金型とした。 In order to solve the problems as described above, in the invention described in claim 1, the synthetic resin sheet is arranged in advance along the inner surface of the mold and melted in a space defined by the mold and the synthetic resin sheet. A mold for injecting a synthetic resin and molding a synthetic resin molded product integrated with the synthetic resin sheet, the mold comprising a first mold and a second mold, A first area and a second area are arranged in each of the first mold and the second mold, and a drawing mold for shaping the synthetic resin sheet is arranged in the first area. In the second region, a molded synthetic resin sheet is arranged, and then a molding die for injecting a molten synthetic resin is used as a synthetic resin molding die.
　また、請求項2に記載された発明においては、請求項1に記載する合成樹脂成形用金型において、前記第二の領域に配置された成形型には、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離するためのブレードが配置されている構成の合成樹脂成形用金型とした。 Further, in the invention described in claim 2, in the synthetic resin molding die according to claim 1, the molding die disposed in the second region is a synthetic resin molded from a synthetic resin sheet. A synthetic resin molding die having a configuration in which a blade for cutting and separating the resin sheet portion is disposed.
　更に、請求項3に記載された発明においては、請求項1または2に記載する合成樹脂成形用金型において、前記第一の領域には複数の絞り型が配置されており、前記第二の領域には複数の成形型が配置されている構成の合成樹脂成形用金型とした。 Further, in the invention described in claim 3, in the synthetic resin molding die described in claim 1 or 2, a plurality of drawing dies are arranged in the first region, and the second A synthetic resin molding die having a configuration in which a plurality of molding dies are arranged in the region is used.
　また、請求項4に記載された発明においては、請求項1または2に記載する合成樹脂成形用金型において、前記第一の金型と第二の金型には、合成樹脂シートとの位置合わせを行うための突起部と、当該突起に対応する凹み部が、各々少なくとも1箇所以上設けられている構成の合成樹脂成形用金型とした。 Further, in the invention described in claim 4, in the synthetic resin molding die according to claim 1 or 2, in the first mold and the second mold, the position of the synthetic resin sheet A synthetic resin molding die having a configuration in which at least one protrusion portion for matching and at least one recess portion corresponding to the protrusion is provided.
　更に、請求項5に記載された発明においては、合成樹脂シートが連続した合成樹脂シートからなる構成とした。 Furthermore, in the invention described in claim 5, the synthetic resin sheet is composed of a continuous synthetic resin sheet.
　更に、請求項6に記載された発明においては、合成樹脂シートを予め金型内面に沿って配置し、金型と合成樹脂シートによって画成される空間に溶融合成樹脂を射出し、当該合成樹脂シートと一体化した合成樹脂成形品を成形する方法において、第一の金型と第二の金型の間へ、合成樹脂シートを送り込むステップと、当該第一の金型と第二の金型の第一の領域に設けた絞り型によって、合成樹脂シートを賦形するステップと、当該第一の金型と第二の金型の第二の領域に設けた成形型の中へ、当該賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するステップと、から成る合成樹脂成形方法であって、当該絞り型によって、合成樹脂シートを賦形するステップと、当該成形型の中へ、当該賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するステップとを同時に行う構成の合成樹脂成形方法とした。 Further, in the invention described in claim 6, the synthetic resin sheet is arranged in advance along the inner surface of the mold, and the molten synthetic resin is injected into a space defined by the mold and the synthetic resin sheet. In a method for molding a synthetic resin molded product integrated with a sheet, a step of feeding a synthetic resin sheet between a first mold and a second mold, and the first mold and the second mold The step of shaping the synthetic resin sheet with the drawing die provided in the first area of the first mold and the shaping mold provided in the second area of the first mold and the second mold Placing the molded synthetic resin sheet and then injecting a molten synthetic resin; and a synthetic resin molding method comprising: shaping the synthetic resin sheet with the drawing mold; and And placed the shaped synthetic resin sheet Thereafter, the synthetic resin molding method is configured to simultaneously perform the step of injecting the molten synthetic resin.
　また、請求項7に記載された発明においては、請求項6に記載の合成樹脂成形方法であって、前記成形型の中へ、賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するステップが、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離するステップを更に含む構成の合成樹脂成形方法とした。 Further, in the invention described in claim 7, in the synthetic resin molding method according to claim 6, after placing the shaped synthetic resin sheet into the mold, the molten synthetic resin is added. The step of injecting is a synthetic resin molding method configured to further include a step of cutting and separating a portion of the synthetic resin sheet formed from the synthetic resin sheet.
　また、請求項8に記載された発明においては、請求項6または7に記載の合成樹脂成形方法において、第一の金型と第二の金型の間へ、合成樹脂シートを送り込む前記ステップが、第一の金型および第二の金型に対して、合成樹脂シートの位置合わせのステップを更に含む構成の合成樹脂成形方法とした。 Further, in the invention described in claim 8, in the synthetic resin molding method according to claim 6 or 7, the step of feeding the synthetic resin sheet between the first mold and the second mold includes The synthetic resin molding method further includes a step of aligning the synthetic resin sheet with respect to the first mold and the second mold.
　更に、請求項8に記載された発明においては、請求項6または7に記載の合成樹脂成形方法であって、当該方法に使用する合成樹脂シートが連続した合成樹脂シートである構成の合成樹脂成形方法とした。 Furthermore, in the invention described in claim 8, the synthetic resin molding method according to claim 6 or 7, wherein the synthetic resin sheet used in the method is a continuous synthetic resin sheet It was a method.
　上述したような構成の発明とすることによって、まず第1に、意匠面をなす印刷層を備えた合成樹脂シートを表皮材として使用するインモールド成形法を使用して製造するための金型又は製造方法において、合成樹脂シートを賦形する工程と、溶融合成樹脂を射出する工程を同時に行うことができる合成樹脂成形用金型と合成樹脂成形方法を提供することが可能となった。 By setting the invention as described above, first of all, a mold for manufacturing using an in-mold molding method using a synthetic resin sheet provided with a printed layer forming a design surface as a skin material or In the production method, it has become possible to provide a synthetic resin molding die and a synthetic resin molding method capable of simultaneously performing a step of shaping a synthetic resin sheet and a step of injecting a molten synthetic resin.
　また、第2に、この溶融合成樹脂を射出する工程において、同時に、賦形した合成樹脂シート部分のトリミングを行い合成樹脂シート本体から切断分離させることができる合成樹脂成形用金型と合成樹脂成形方法を提供することが可能となった。 Secondly, in the step of injecting the molten synthetic resin, at the same time, the synthetic resin molding mold and the synthetic resin molding capable of trimming the molded synthetic resin sheet portion and cutting and separating from the synthetic resin sheet main body. It became possible to provide a method.
　また、第3に、賦形した合成樹脂シートを成形型の所定位置に正確に配置するための合成樹脂シートの位置合わせが容易に行うことができる合成樹脂成形用金型と合成樹脂成形方法を提供することが可能となった。 Third, there is provided a synthetic resin molding die and a synthetic resin molding method capable of easily aligning the synthetic resin sheet for accurately placing the shaped synthetic resin sheet at a predetermined position of the molding die. It became possible to provide.
　また、第4に、合成樹脂シートとして連続した合成樹脂シートを使用することにより、絞り型（第一の領域）および成形型（第二の領域）の位置へ合成樹脂シート、および賦形された合成樹脂シートを、金型に対して位置合わせをしつつ、自動的に連続して供給することが可能となった。 Fourth, by using a continuous synthetic resin sheet as the synthetic resin sheet, the synthetic resin sheet was shaped and shaped to the position of the drawing die (first region) and the mold (second region) The synthetic resin sheet can be automatically and continuously supplied while aligning with the mold.
　以上のような効果により、インモールド成形法を利用した合成樹脂成形品の生産効率を上げ、製造コストを低減することが可能となった。
Due to the effects as described above, it has become possible to increase the production efficiency of synthetic resin molded products using the in-mold molding method and to reduce the manufacturing cost.
図1は、本発明にかかる合成樹脂成形用金型の基本的な形態を表したものである。FIG. 1 shows a basic form of a synthetic resin molding die according to the present invention. 図2は、図1に示す合成樹脂成形用金型の断面Ａ-Ａを示したものである。FIG. 2 shows a cross section AA of the synthetic resin molding die shown in FIG. 図3は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 3 illustrates a process for molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図4は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 4 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図5は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 5 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図6は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 6 illustrates a process for molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図7は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 7 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図8は、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品を成形するプロセスを説明するものである。FIG. 8 illustrates a process of molding a synthetic resin molded product using the synthetic resin molding die according to the present invention. 図9は合成樹脂シートをトリミングするためのブレードを備えた合成樹脂成形用金型の詳細を示した図である。FIG. 9 is a diagram showing details of a synthetic resin molding die provided with a blade for trimming a synthetic resin sheet.
　以下、図面を参照しながら、本発明の実施形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
　図１は、本発明にかかる合成樹脂成形用金型の基本的な形態を表したものである。　また、図2は図1に示す合成樹脂成形用金型の断面Ａ-Ａを示したものである。　本発明にかかる合成樹脂成形用金型は、第一の金型（コア型）20と、第二の金型（キャビティ型）30から構成されている。　また、第一の金型（コア型）20および第二の金型（キャビティ型）30の各々には、型上段側に設けられた第一の領域100と型下段側に設けられた第二の領域200が含まれている。 FIG. 1 shows a basic form of a synthetic resin molding die according to the present invention. FIG. 2 shows a cross section AA of the synthetic resin molding die shown in FIG. The synthetic resin molding die according to the present invention includes a first die (core die) 20 and a second die (cavity die) 30. Each of the first mold (core mold) 20 and the second mold (cavity mold) 30 has a first region 100 provided on the upper stage side of the mold and a second area provided on the lower stage side of the mold. The area 200 is included.
　この第一の領域100には、合成樹脂シートを賦形するための絞り型が配置されている。　この絞り型は、インモールド成形法（合成樹脂シートと溶融合成樹脂を融着一体化させることにより合成樹脂成形品を製造する成形法）に使用する合成樹脂シートを予め成形型の形状に合わせて賦形しておくための型である。　絞り型として、マッチドダイ（又はマッチドメタル）方式を使用する場合には、図1に示すように、オス型21とメス型31の組み合わせにより合成樹脂シート41を賦形する。　
　図1には絞り型としてマッチドダイ（又はマッチドメタル）の構成を示したが、必ずしもマッチドダイ（又はマッチドメタル）方式に限られるものではなく、真空成形方式や圧空成型方式の型を使用してもよい。　
　また、第一の領域100には絞り加工によって賦形するための合成樹脂シート41の位置決めを行なうための突起部35と、これに対応する凹み部25が少なくとも1箇所以上設けられている。　図1では、第一の金型20側に凹み部25が設けられ、第二の金型30側に突起部35が設けられているが、第一の金型20側に突起部35を設け、第二の金型30側に凹み部25を設けるようにしても良い。 In the first region 100, a drawing die for shaping the synthetic resin sheet is arranged. In this drawing mold, a synthetic resin sheet used in an in-mold molding method (a molding method for producing a synthetic resin molded product by fusing and integrating a synthetic resin sheet and a molten synthetic resin) is previously matched with the shape of the molding die. This is a mold for shaping. When a matched die (or matched metal) method is used as the drawing die, a synthetic resin sheet 41 is shaped by a combination of a male die 21 and a female die 31 as shown in FIG.
Although FIG. 1 shows a configuration of a matched die (or matched metal) as a drawing die, it is not necessarily limited to the matched die (or matched metal) method, and a vacuum forming method or a pressure forming method may be used. .
The first region 100 is provided with at least one protrusion 35 for positioning the synthetic resin sheet 41 for shaping by drawing and at least one recess 25 corresponding thereto. In FIG. 1, the recess 25 is provided on the first mold 20 side and the protrusion 35 is provided on the second mold 30 side, but the protrusion 35 is provided on the first mold 20 side. The recess 25 may be provided on the second mold 30 side.
　第二の領域200には、インモールド成形法によって合成樹脂成形品を成形するための成形型が配置されている。　この成形型は第一の金型20側に設けられたコア部分23と、第二の金型30側に設けられたキャビティ部分33からなり、コア部分23とキャビティ部分33によって形成される空間に溶融合成樹脂を圧入するための通路となる射出成形用のノズルや、スプルー32、ゲート22が備えられている。　
　この成形型のキャビティ部分33には、第一の領域100に配置された絞り型において賦形された合成樹脂シート41が挿入され、賦形された合成樹脂シート41とコア部分23によって形成される空間に溶融合成樹脂が圧入され、合成樹脂成形品が成形される。　また、合成樹脂成形品を成形後、金型から成形品を取り出すためのエジャクタ・ピン24を合成樹脂成形用金型の第二の領域に備えるようにしても良い。 In the second region 200, a molding die for molding a synthetic resin molded product by an in-mold molding method is arranged. This mold comprises a core part 23 provided on the first mold 20 side and a cavity part 33 provided on the second mold 30 side. In the space formed by the core part 23 and the cavity part 33, An injection molding nozzle, a sprue 32, and a gate 22 are provided as a passage for press-fitting molten synthetic resin.
A synthetic resin sheet 41 shaped in the drawing die arranged in the first region 100 is inserted into the cavity portion 33 of the mold, and is formed by the shaped synthetic resin sheet 41 and the core portion 23. A molten synthetic resin is press-fitted into the space, and a synthetic resin molded product is formed. Further, after molding the synthetic resin molded product, an ejector pin 24 for taking out the molded product from the mold may be provided in the second region of the synthetic resin molding die.
　なお、本発明にかかる合成樹脂成形用金型では、絞り加工を行なうための合成樹脂シートの温度を適切な温度に加熱したり、また圧入する溶融合成樹脂の温度プロファイルを適切に維持するために、金型の温度を制御するための装置を付加するようにしても良い。 In the synthetic resin molding die according to the present invention, the temperature of the synthetic resin sheet for drawing is heated to an appropriate temperature, and the temperature profile of the molten synthetic resin to be press-fitted is appropriately maintained. A device for controlling the temperature of the mold may be added.
　また、合成樹脂シート41上には、加飾性を持たせるために、絵柄や文字を予め印刷しておくようにしても良い。　この印刷は、合成樹脂シート41の片面のみに印刷されたものであっても良いし、両面に印刷することによって立体感を出すようしたものであっても良い。　また、バックライティング(透過意匠とも言う)するような場合には、合成樹脂シートのバックライティングする領域(透過意匠部分)に、透光性又は不透光性の絵柄や文字を同時に印刷しておくこともできる。 Further, on the synthetic resin sheet 41, a pattern or a character may be printed in advance in order to give a decorative property. This printing may be printed on only one side of the synthetic resin sheet 41, or may be printed on both sides to give a three-dimensional effect. In the case of backlighting (also referred to as transparent design), a translucent or non-translucent pattern or character is printed simultaneously on the backlit area (transparent design portion) of the synthetic resin sheet. You can also.
　なお、図1に示す合成樹脂成形用金型では、型上段側に設けられた第一の領域100に絞り型を配置し、型下段側に設けられた第二の領域200には成形型を配置しているが、これに限定されるものではなく、第一の領域100に成形型を配置し、第二の領域200に絞り型を配置するようにしてもよい。 In the synthetic resin molding die shown in FIG. 1, a drawing die is arranged in the first region 100 provided on the upper side of the die, and a molding die is provided in the second region 200 provided on the lower side of the die. However, the present invention is not limited to this, and a forming die may be arranged in the first region 100 and a drawing die may be arranged in the second region 200.
　また、図1および図2に示す合成樹脂成形用金型では、同一部品を4個取りする場合の構成、即ち同一形状の絞り型が4セット、同一形状の成形型が4セット配置された構成の金型を示したが、これに限定されるものではない。　同一形状の絞り型と成形型を各々1セットずつ配置するようにしたり、形状の異なる絞り型複数セットとこれに対応する成形型複数セットを備えるようにしても良い。 In addition, the synthetic resin molding die shown in FIGS. 1 and 2 has a configuration in which four identical parts are taken, that is, a configuration in which four sets of the same shape drawing die and four sets of the same shape molding are arranged. However, the present invention is not limited to this.絞 り One set each of the same shape of the drawing die and molding die may be arranged, or a plurality of drawing die sets having different shapes and a plurality of molding die sets corresponding thereto may be provided.
　次に、図3から図8に基づいて、本発明にかかる合成樹脂成形用金型を使用した合成樹脂成形品の製造方法について説明する。　
　図3は、第二の金型30の絞り型を配置した第一の領域100に合成樹脂シート41をセットした状態を示したものである。　このとき、第二の金型30側に設けた突起部35に合わせた穴を合成樹脂シート41に予め設けておき、これらを嵌合することによって合成樹脂シート41と第二の金型30との位置合わせをするようにしてもよい。　
　図4は、第二の金型30の絞り型を配置した第一の領域に合成樹脂シート41をセットした後、第一の金型20と第二の金型30との型締めを行なった状態を示し、この段階において合成樹脂シート41はオス型21とメス型31の組み合わせにより賦形される。 Next, a method for producing a synthetic resin molded article using the synthetic resin molding die according to the present invention will be described with reference to FIGS.
FIG. 3 shows a state in which the synthetic resin sheet 41 is set in the first region 100 where the drawing die of the second mold 30 is arranged. At this time, the synthetic resin sheet 41 and the second mold 30 are fitted in advance by providing holes in the synthetic resin sheet 41 in accordance with the projections 35 provided on the second mold 30 side. May be aligned.
FIG. 4 shows that the first mold 20 and the second mold 30 were clamped after setting the synthetic resin sheet 41 in the first region where the drawing mold of the second mold 30 was arranged. In this stage, the synthetic resin sheet 41 is shaped by a combination of the male mold 21 and the female mold 31.
　図5は、合成樹脂シート41を賦形した後、第一の金型20と第二の金型30とを離型した状態を示したものであり、この状態において、賦形した合成樹脂シート41を絞り型を配置した第一の領域100から取り出す。 FIG. 5 shows a state in which the first mold 20 and the second mold 30 are released after shaping the synthetic resin sheet 41. In this state, the shaped synthetic resin sheet 41 is taken out from the first region 100 where the aperture die is arranged.
　図6は、絞り型を配置した第一の領域100から取り出した、賦形済みの合成樹脂シート41を成形型を配置した第二の領域200へセットし、更に絞り型を配置した第一の領域100に新規な合成樹脂シート41をセットした状態を示したものである。　このとき、賦形済みの合成樹脂シート41および新規な合成樹脂シート41は、第二の金型30側に設けた突起部35と合成樹脂シートに設けた穴を嵌合させることによって、第二の金型30との位置合わせを行なうようにしてもよい。　
　図7は、第二の金型30の成形型を配置した第二の領域に既に賦形した合成樹脂シート41をセットし、第二の金型30の絞り型を配置した第一の領域に新規な合成樹脂シート41をセットした後、第一の金型20と第二の金型30との型締めを行なった状態を示す。　この段階において新規な合成樹脂シート41はオス型21とメス型31の組み合わせにより賦形され、更に、既に賦形された合成樹脂シート41をセットした成形型では、溶融合成樹脂が射出成形用のノズル、スプルー32、ゲート22を通って圧入され、賦形された合成樹脂シート41と第二の金型30側のコア部分23によって形成された空間に溶融合成樹脂42が充填される。　この溶融合成樹脂42が金型内で冷却されることにより、凝固し、合成樹脂シートと一体化した合成樹脂成形品ができあがる。 FIG. 6 shows that the molded synthetic resin sheet 41 taken out from the first region 100 where the drawing die is arranged is set in the second region 200 where the molding die is arranged, and the first drawing die is further arranged. The state where a new synthetic resin sheet 41 is set in the region 100 is shown. At this time, the shaped synthetic resin sheet 41 and the new synthetic resin sheet 41 are fitted into the projections 35 provided on the second mold 30 side and the holes provided in the synthetic resin sheet, so that the second Alignment with the mold 30 may be performed.
FIG. 7 shows that the already formed synthetic resin sheet 41 is set in the second area where the mold of the second mold 30 is arranged, and the first area where the drawing die of the second mold 30 is arranged. A state where the first mold 20 and the second mold 30 are clamped after the new synthetic resin sheet 41 is set is shown. At this stage, the new synthetic resin sheet 41 is shaped by the combination of the male mold 21 and the female mold 31. Further, in the molding mold in which the already shaped synthetic resin sheet 41 is set, the molten synthetic resin is used for injection molding. The space formed by the synthetic resin sheet 41 press-fitted through the nozzle, sprue 32 and gate 22 and the core portion 23 on the second mold 30 side is filled with the molten synthetic resin 42. When the molten synthetic resin 42 is cooled in the mold, it is solidified and a synthetic resin molded product integrated with the synthetic resin sheet is completed.
　図8は、溶融合成樹脂42が金型内で冷却され、凝固したあと、第一の金型20と第二の金型30とを離型した状態を示したものである。　この状態において、合成樹脂シートと一体化した合成樹脂成形品は金型から取り出され、更に、賦形した合成樹脂シート41を絞り型を配置した第一の領域100から取り出す。　このとき、第一の金型20の第二の領域に配置されたエジャクタ・ピン24を使用して、合成樹脂成形品を金型から押し出すようにしても良い。 FIG. 8 shows a state in which the first mold 20 and the second mold 30 are released after the molten synthetic resin 42 is cooled and solidified in the mold. In this state, the synthetic resin molded product integrated with the synthetic resin sheet is taken out from the mold, and further, the shaped synthetic resin sheet 41 is taken out from the first region 100 where the drawing die is arranged. At this time, the synthetic resin molded product may be extruded from the mold by using the ejector pins 24 arranged in the second region of the first mold 20.
　この後、図6から図8に示す工程を繰り返すことによって、合成樹脂シートと一体化した合成樹脂成形品の成形と、合成樹脂シートの賦形を同時に行なうことができるようになっている。 Thereafter, by repeating the steps shown in FIGS. 6 to 8, the synthetic resin molded product integrated with the synthetic resin sheet and the synthetic resin sheet can be formed at the same time.
　以上の実施形態では、合成樹脂シートのトリミングを行なわないで合成樹脂成形品の成形を行なう方法を説明してきた。　しかし、合成樹脂シートと一体化した合成樹脂成形品の成形と同時に、合成樹脂シートをトリミングすることによって、余分な合成樹脂シートを製品部分から取り除くようにすることもできる。　図9はこのような場合の合成樹脂成形用金型の詳細を示した図である。　図9の右側に示した詳細図から判るように、第二の金型30側であって、第2の領域200に設けられたキャビティ部分33の外周にはブレード36が配置されており、このブレード36によって、第一の金型20と第二の金型30とを型締めする際に、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離（トリミング）することができるようになっている。　なお、図示はしていないが、第二の金型30に設けられたブレード36に対応させて、第一の金型20にはブレード36の逃げ溝を設けるようにしても良い。　このようなブレード36を備えた第二の金型30と、ブレード36の逃げ溝が設けられた第一の金型20を使用して、合成樹脂シート41と一体化した合成樹脂成形品を成形する場合、第一の金型20と第二の金型30を型締めする段階において合成樹脂シート41のトリミングを完了させることが可能になり、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離することができるようになっている。 In the above embodiment, the method of molding a synthetic resin molded product without trimming the synthetic resin sheet has been described. However, it is also possible to remove the excess synthetic resin sheet from the product part by trimming the synthetic resin sheet simultaneously with the molding of the synthetic resin molded product integrated with the synthetic resin sheet. FIG. 9 is a view showing details of the synthetic resin molding die in such a case. As can be seen from the detailed view shown on the right side of FIG. 9, on the second mold 30 side, a blade 36 is arranged on the outer periphery of the cavity portion 33 provided in the second region 200. When the first mold 20 and the second mold 30 are clamped by the blade 36, the portion of the synthetic resin sheet formed from the synthetic resin sheet can be cut and separated (trimmed). It has become. Although not shown, the first mold 20 may be provided with a relief groove of the blade 36 in correspondence with the blade 36 provided in the second mold 30. Using the second mold 30 provided with the blade 36 and the first mold 20 provided with the relief groove of the blade 36, a synthetic resin molded product integrated with the synthetic resin sheet 41 is molded. In this case, it becomes possible to complete the trimming of the synthetic resin sheet 41 in the stage of clamping the first mold 20 and the second mold 30, and the portion of the synthetic resin sheet shaped from the synthetic resin sheet Can be cut and separated.
　また、以上の実施形態では、絞り型が配置された第一の領域100にセットする合成樹脂シート41と、成形型が配置された第二の領域200にセットする賦形された合成樹脂シート41とはそれぞれ別の分離したシートから構成されていた。　しかし、連続した合成樹脂シート、例えばロール状に巻かれた連続合成樹脂シート41を使用することも可能である。　この場合、ロール状に巻かれた連続合成樹脂シート41の両端には、所定の間隔でスプロケット用の穴を予め設けておき、このスプロケット用の穴に合わせて、第二の金型30と第一の金型20に、突起部35と、これに対応する凹み部25をそれぞれ設けておくことにより、図示しないスプロケットによって、合成樹脂成形用金型への合成樹脂シート41の供給、金型内での合成樹脂シート41の位置合わせ、並びに合成樹脂成形用金型からの合成樹脂シート41の取り出しを連続的にかつ自動的に行なうことが可能となる。
Further, in the above embodiment, the synthetic resin sheet 41 set in the first region 100 where the drawing die is arranged, and the shaped synthetic resin sheet 41 set in the second region 200 where the molding die is arranged. Each consisted of a separate sheet. However, it is also possible to use a continuous synthetic resin sheet, for example, a continuous synthetic resin sheet 41 wound in a roll shape. In this case, both ends of the continuous synthetic resin sheet 41 wound in a roll shape are provided with holes for sprockets at predetermined intervals in advance, and the second mold 30 and the second mold 30 are aligned with the holes for the sprockets. By providing a protrusion 35 and a recess 25 corresponding to the protrusion 35 on one mold 20, supply of the synthetic resin sheet 41 to the synthetic resin molding mold by a sprocket (not shown) It is possible to continuously and automatically perform the alignment of the synthetic resin sheet 41 and the removal of the synthetic resin sheet 41 from the synthetic resin molding die.
20　　 第一の金型
21　　 オス型
22　　 ゲート
23　　 コア部分
24　　 エジャクタ・ピン
25　　 凹み部
30　　 第二の金型
31　　 メス型
32　　 スプルー
33　　 キャビティ部分
35　　 突起部
36　　 ブレード
41　　 合成樹脂シート
100　　第一の領域
200　　第二の領域 20 First mold
21 Male
22 Gate
23 Core part
24 Ejector pin
25 dent
30 Second mold
31 Female
32 sprue
33 Cavity part
35 Protrusion
36 blade
41 Synthetic resin sheet
100 First area
200 Second area

Claims (9)

  1. 　合成樹脂シートを予め金型内面に沿って配置し、金型と合成樹脂シートによって画成される空間に溶融合成樹脂を射出し、当該合成樹脂シートと一体化した合成樹脂成形品を成形するための金型であって、
    (1) 当該金型は第一の金型と第二の金型から構成され、
    (2) 当該第一の金型と第二の金型のそれぞれには、第一の領域と第二の領域が配置され、
    (3) 当該第一の領域には、当該合成樹脂シートを賦形するための絞り型を配置し、
    (4) 当該第二の領域には、賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するための成形型を配置した、
    ことを特徴とする合成樹脂成形用金型。
    To place a synthetic resin sheet in advance along the inner surface of the mold, inject a molten synthetic resin into a space defined by the mold and the synthetic resin sheet, and form a synthetic resin molded product integrated with the synthetic resin sheet Mold,
    (1) The mold is composed of a first mold and a second mold,
    (2) A first area and a second area are arranged in each of the first mold and the second mold,
    (3) In the first region, a drawing die for shaping the synthetic resin sheet is arranged,
    (4) In the second region, after placing the shaped synthetic resin sheet, a mold for injecting the molten synthetic resin is arranged.
    A synthetic resin molding die characterized by the above.
  2. 　請求項1に記載する合成樹脂成形用金型であって、
    　前記第二の領域に配置された成形型には、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離するためのブレードが配置されていることを特徴とする合成樹脂成形用金型。
    The synthetic resin molding die according to claim 1,
    A synthetic resin molding die, wherein a blade for cutting and separating a portion of the synthetic resin sheet formed from the synthetic resin sheet is arranged in the molding die arranged in the second region .
  3. 　請求項1または2に記載する合成樹脂成形用金型であって、
    　前記第一の領域には複数の絞り型が配置されており、前記第二の領域には複数の成形型が配置されていることを特徴とする合成樹脂成形用金型。
    A synthetic resin molding die according to claim 1 or 2,
    A synthetic resin molding die, wherein a plurality of drawing dies are arranged in the first region, and a plurality of molding dies are arranged in the second region.
  4. 　請求項1または2に記載する合成樹脂成形用金型であって、前記第一の金型と第二の金型には、合成樹脂シートとの位置合わせを行うための突起部と、当該突起に対応する凹み部が、各々少なくとも1箇所以上設けられていることを特徴とする合成樹脂成形用金型。
    The synthetic resin molding die according to claim 1 or 2, wherein the first die and the second die are provided with a protrusion for aligning with the synthetic resin sheet, and the protrusion A synthetic resin molding die, wherein at least one or more recesses corresponding to each of the above are provided.
  5. 　請求項1または2に記載する合成樹脂成形用金型であって、前記合成樹脂シートが連続した合成樹脂シートからなることを特徴とする合成樹脂成形用金型。
    3. The synthetic resin molding die according to claim 1, wherein the synthetic resin sheet is a continuous synthetic resin sheet.
  6. 　合成樹脂シートを予め金型内面に沿って配置し、金型と合成樹脂シートによって画成される空間に溶融合成樹脂を射出し、当該合成樹脂シートと一体化した合成樹脂成形品を成形する方法において、
    (1)　第一の金型と第二の金型の間へ、合成樹脂シートを送り込むステップと、
    (2)　当該第一の金型と第二の金型の第一の領域に設けた絞り型によって、合成樹脂シートを賦形するステップと、
    (3)　当該第一の金型と第二の金型の第二の領域に設けた成形型の中へ、当該賦形された合成樹脂シートを配置した後、溶融合成樹脂を射出するステップと、
    から成る合成樹脂成形方法であって、
    当該(2)のステップと、(3)のステップを同時に行うことを特徴とする合成樹脂成形方法。
    A method in which a synthetic resin sheet is arranged in advance along the inner surface of a mold, a molten synthetic resin is injected into a space defined by the mold and the synthetic resin sheet, and a synthetic resin molded product integrated with the synthetic resin sheet is molded. In
    (1) sending a synthetic resin sheet between the first mold and the second mold;
    (2) shaping the synthetic resin sheet by a drawing die provided in the first region of the first die and the second die;
    (3) a step of injecting a molten synthetic resin after placing the shaped synthetic resin sheet in a mold provided in the second region of the first mold and the second mold; ,
    A synthetic resin molding method comprising:
    A synthetic resin molding method comprising performing the step (2) and the step (3) simultaneously.
  7. 　請求項６に記載の合成樹脂成形方法であって、
    　前記(3)のステップが、合成樹脂シートから賦形された合成樹脂シートの部分を切断分離するステップを更に含むことを特徴とする合成樹脂成形方法。
    The synthetic resin molding method according to claim 6,
    The synthetic resin molding method, wherein the step (3) further includes a step of cutting and separating a portion of the synthetic resin sheet formed from the synthetic resin sheet.
  8. 　請求項６または７に記載の合成樹脂成形方法であって、
    　前記(1)及び(2)のステップが、前記第一の金型および第二の金型に対して、合成樹脂シートの位置合わせを行なうステップを更に含むことを特徴とする合成樹脂成形方法。
    A synthetic resin molding method according to claim 6 or 7,
    The synthetic resin molding method, wherein the steps (1) and (2) further include a step of aligning a synthetic resin sheet with respect to the first mold and the second mold.
  9. 　請求項６または７に記載の合成樹脂成形方法であって、前記方法に使用する合成樹脂シートが連続した合成樹脂シートであることを特徴とする合成樹脂成形方法。 A synthetic resin molding method according to claim 6 or 7, wherein the synthetic resin sheet used in the method is a continuous synthetic resin sheet.
PCT/JP2009/060331 2009-06-05 2009-06-05 Die for continuous in-mold molding and continuous in-mold molding method WO2010140251A1 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003220623A (en) * 2002-01-30 2003-08-05 Hoshi Seisakusho:Kk Method for forming tertiary curved surface molding display board
JP2007320202A (en) * 2006-06-01 2007-12-13 Koto Engraving Corp In-mold molding method, mold for in-mold molding, and in-mold molding apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003220623A (en) * 2002-01-30 2003-08-05 Hoshi Seisakusho:Kk Method for forming tertiary curved surface molding display board
JP2007320202A (en) * 2006-06-01 2007-12-13 Koto Engraving Corp In-mold molding method, mold for in-mold molding, and in-mold molding apparatus

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