JP2017105060A - In-mold injection mold device and resin molding manufacturing method - Google Patents

In-mold injection mold device and resin molding manufacturing method Download PDF

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JP2017105060A
JP2017105060A JP2015240335A JP2015240335A JP2017105060A JP 2017105060 A JP2017105060 A JP 2017105060A JP 2015240335 A JP2015240335 A JP 2015240335A JP 2015240335 A JP2015240335 A JP 2015240335A JP 2017105060 A JP2017105060 A JP 2017105060A
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mold
cavity
decorative film
decorative
film
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JP6156474B2 (en
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統太 瀬堂
Tota Sedo
統太 瀬堂
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Daikin Industries Ltd
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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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
    • B29C33/18—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall using vacuum
    • 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
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds

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

Abstract

PROBLEM TO BE SOLVED: To provide an in-mold injection mold device that alleviates wrinkles, scratches, breakage or local color reduction of a decoration film, which easily occur on a surface on a decoration side of a resin molding, and to provide a resin molding manufacturing method using the in-mold injection mold device.SOLUTION: An in-mold injection mold device has: a first die 10 having a cavity 11; a second die 20 having a core 21; a clamp member 40 that sandwiches and binds a decoration film 30 while sealing a decoration surface side of the decoration film 30, and pushes the decoration film to a first parting plane 13 of the first mold 10; and a suction passage 14 that sucks air in a sealed space between the decoration film 30 and the inner face of the cavity 11. A sandwiching member that sandwiches the decoration film 30 from both surfaces thereof in the clamp member 40 is elastically supported by a tension acting on the decoration film 30 in the suction step so as to move to the cavity 11 side in a state of sandwiching and biding the decoration film 30.SELECTED DRAWING: Figure 10

Description

本発明は、インモールド射出成形金型装置及び樹脂成形品製造方法に関する。   The present invention relates to an in-mold injection mold apparatus and a resin molded product manufacturing method.

インモールド射出成形は、携帯電話、化粧品容器、雑貨品などの比較的寸法の小さい外装部品に広く採用されている。ところが、最近ではルームエアコンの前面パネルのような大きなサイズの樹脂成形品についてまでインモールド射出成形法による加飾が求められるようになってきた。   In-mold injection molding is widely used for exterior parts with relatively small dimensions such as mobile phones, cosmetic containers, and miscellaneous goods. However, recently, it has been demanded to decorate a large-sized resin molded product such as a front panel of a room air conditioner by an in-mold injection molding method.

一般に、インモールド射出成形金型装置は、特許文献１、特許文献２等に開示されているようなものであって、製品形状部の加飾面側の形状を形成するキャビティを有する第１金型、第１金型に対応して製品形状部の非加飾面側の形状を形成するコアを有する第２金型、キャビティの外側で加飾フィルムをクランプするクランプ部材などを備えている。   In general, an in-mold injection mold apparatus is disclosed in Patent Document 1, Patent Document 2, etc., and is a first mold having a cavity for forming a shape on the decorative surface side of a product shape portion. A mold, a second mold having a core that forms a shape on the non-decorative surface side of the product shape portion corresponding to the first mold, a clamp member that clamps the decorative film outside the cavity, and the like are provided.

また、このようなインモールド射出成形金型装置は、次の手順で行われている。
先ず、金型開き時に加飾フィルムを金型内に走向させる工程(フィルム送り工程）、クランプ部材により加飾フィルムをクランプして第1金型の、第２金型との分割面に押し付ける工程（クランプ工程）、クランプフィルムとキャビティの内面との間に形成される空間部を真空引きする工程（吸引工程）が順次行われる。これにより加飾フィルムに伸びと変形を加えて加飾フィルムをキャビティの内面に密着させる。そして、その後型閉めし、その後に内部空間に溶融樹脂を射出する工程（射出工程）を行う。次いで、溶融樹脂を冷却し、これにより溶融樹脂を固化するとともに、加飾フィルムの模様を樹脂成形品に転写させる工程（冷却工程）を経て、最後に型開きし、完成した樹脂成形品を取り出す工程（取出工程）が行われる。 Moreover, such an in-mold injection mold apparatus is performed in the following procedure.
First, the process of moving the decorative film into the mold when the mold is opened (film feeding process), the process of clamping the decorative film with the clamp member and pressing it against the split surface of the first mold and the second mold (Clamping step), and a step (suction step) of evacuating the space formed between the clamp film and the inner surface of the cavity are sequentially performed. Thereby, elongation and a deformation | transformation are added to a decorating film, and a decorating film is stuck to the inner surface of a cavity. Thereafter, the mold is closed, and then a step of injecting the molten resin into the internal space (injection step) is performed. Next, the molten resin is cooled, thereby solidifying the molten resin, and after passing through a process (cooling process) of transferring the pattern of the decorative film to the resin molded product, the mold is finally opened and the completed resin molded product is taken out. A process (removal process) is performed.

特開２０１３−１８４３００号公報JP 2013-184300 A 特開２００１−２３９５２５号公報JP 2001-239525 A

ところで、従来のインモールド射出成形金型装置は、加飾フィルムを第1金型の、第２金型との分割面、すなわちクランプ面にリングを介して押し付けることにより、吸引工程におけるエアリークを抑制し、これにより加飾フィルムのキャビティの内面への密着度を高めようとしていた。しかし、この従来の方法ではクランプ部材による加飾フィルムの固定力が高く、吸引時に加飾フィルムがキャビティ側へ移動することが全くないため、キャビティの角部において密着不足が生じ易いという問題があった。また、キャビティの角部において、加飾フィルムに必要とされる伸びや変形が過大となり密着不足が生じる場合があった。この結果、吸引時及び溶融樹脂射出時にキャビティの角部において加飾フィルムに色々な方向の応力が作用し、加飾フィルムに皴、破れ、傷、局部的な伸びに起因する着色層の薄肉化などが発生し、良品が得られないという問題があった。また、樹脂成形品が大型化すると、特にこの問題が顕著に表れるという状態であった。   By the way, the conventional in-mold injection mold apparatus suppresses the air leak in the suction process by pressing the decorative film through the ring against the split surface of the first mold and the second mold, that is, the clamp surface. Thus, an attempt was made to increase the degree of adhesion of the decorative film to the inner surface of the cavity. However, this conventional method has a problem that the fixing force of the decorative film by the clamp member is high and the decorative film does not move to the cavity side at the time of suction. It was. Moreover, in the corner | angular part of a cavity, the expansion | extension and deformation | transformation required for a decoration film may become excessive, and the close_contact | adherence may arise. As a result, stress in various directions acts on the decorative film at the corner of the cavity at the time of suction and molten resin injection, and the colored layer is thinned due to wrinkles, tears, scratches, and local elongation on the decorative film There was a problem that non-defective products could not be obtained. In addition, when the resin molded product is increased in size, this problem is particularly apparent.

本発明は、このような課題に鑑み成されたものであって、樹脂成形品に転写される加飾フィルムに生じ易い皴、傷、破れ、局部的薄肉化による薄色化などを緩和するインモールド射出成形金型装置と、このようなインモールド射出成形金型装置を用いて樹脂成形品を製造する樹脂成形品製造方法とを提供することを目的とする。   The present invention has been made in view of such problems, and it is an in- hibition for reducing wrinkles, scratches, tears, thinning of colors due to local thinning, etc. that are likely to occur in a decorative film transferred to a resin molded product. It is an object of the present invention to provide a mold injection mold device and a resin molded product manufacturing method for manufacturing a resin molded product using such an in-mold injection mold device.

この課題を解決するインモールド射出成形金型装置は、製品形状部の加飾面側の形状を形成するキャビティを有する第１金型と、前記第１金型に対応して製品形状部の非加飾面側の形状を形成するコアを有する第２金型と、型開き時に前記キャビティの外側において、加飾フィルムの加飾面側をシールしながら前記加飾フィルムを両面から挟持して拘束するとともに、前記第１金型における前記第２金型との第１分割面に対し前記加飾フィルムを押し付けるクランプ部材と、前記クランプ部材により挟持された前記加飾フィルムの加飾面と前記キャビティの内面との間の密閉空間の空気を吸引するように前記第１金型に形成された吸引通路とを有し、前記クランプ部材は、前記加飾フィルムを両面から挟持するための挟持部材を有し、前記挟持部材は、前記密閉空間の空気を吸引する吸引時に前記加飾フィルムに作用する張力により、前記加飾フィルムを挟持拘束した状態のまま前記キャビティ側へ移動可能に弾性的に支持されている。   An in-mold injection mold apparatus that solves this problem includes a first mold having a cavity that forms a shape on the decorative surface side of a product shape portion, and a non-product shape portion corresponding to the first mold. A second mold having a core that forms the shape of the decorative surface side, and restraining by sandwiching the decorative film from both sides while sealing the decorative surface side of the decorative film outside the cavity when the mold is opened And a clamp member that presses the decorative film against a first split surface of the first mold with the second mold, a decorative surface of the decorative film sandwiched between the clamp members, and the cavity A suction passage formed in the first mold so as to suck air in an enclosed space between the inner surface of the clamp member, and the clamp member includes a holding member for holding the decorative film from both sides. Have Member, the tension applied to the decorative film at the time of suction for sucking air of said closed space, and is movable elastically supported to leave the cavity side in a state of sandwiching restrain the decorative film.

加飾フィルムは、型開き時にキャビティの外側でクランプ部材の挟持部材により挟持拘束されているが、加飾フィルムとキャビティの内面との間の密閉空間の空気を吸引する時に、加飾フィルムに作用する張力により挟持部材が加飾フィルムを挟持拘束した状態のままキャビティ側へ移動する。これにより、キャビティの２次元或いは３次元の角部に対し加飾フィルムが引き込まれ、キャビティの角部における加飾フィルムに必要とされる伸び代や変形量が緩和される。このため、樹脂成形品の加飾側表面に生じ易い加飾フィルムの皴、破れ傷、或いは、加飾フィルムの局部的な伸びによる着色層の薄肉化やマイクロクラックの発生を抑制することができる。   The decorative film is clamped and restrained by the clamping member outside the cavity when the mold is opened, but acts on the decorative film when the air in the sealed space between the decorative film and the inner surface of the cavity is sucked. The holding member moves to the cavity side while holding the decorative film by the tension to be held. As a result, the decorative film is drawn into the two-dimensional or three-dimensional corner of the cavity, and the stretch allowance and deformation required for the decorative film at the corner of the cavity are alleviated. For this reason, it is possible to suppress wrinkles, tears on the decorative film that are likely to occur on the decorative side surface of the resin molded product, or thinning of the colored layer and microcracking due to local elongation of the decorative film. .

また、前記クランプ部材は、前記加飾フィルムの加飾面側に当接するように、前記第１金型における前記キャビティの外側に設けられる第１部材と、前記加飾フィルムの非加飾面側に当接可能に、前記第２金型側の前記コアの外側に設けられる第２部材とからなり、前記挟持部材は、前記第１部材に設けられた第１挟持部材と前記第２部材に設けられた第２挟持部材とで前記加飾フィルムを両面から挟持するように構成され、前記第１挟持部材および前記第２挟持部材は、それぞれ、前記密閉空間の吸引時に前記キャビティ側へ移動可能に弾性的に支持されるとともに、前記第１挟持部材には前記加飾フィルムの加飾面側に当接するシール部材が設けられているものとしてもよい。   Moreover, the said clamp member is a 1st member provided in the outer side of the said cavity in a said 1st metal mold | die so that it may contact | abut to the decorating surface side of the said decorating film, and the non-decorating surface side of the said decorating film And a second member provided on the outer side of the core on the second mold side so that the holding member is connected to the first holding member and the second member provided on the first member. The decorative film is configured to be clamped from both sides by a provided second clamping member, and each of the first clamping member and the second clamping member is movable toward the cavity when sucking the sealed space. The first clamping member may be provided with a seal member that abuts on the decorative surface side of the decorative film.

このような構成にすれば、第１挟持部材および第２挟持部材がそれぞれキャビティ側へ移動するように弾性的に支持されているとともに、シール部材が第１挟持部材に設けられているので、加飾フィルムとキャビティの内面との間の密閉空間を気密に保持しながら、加飾フィルムをキャビティ側へ移動させることができる。また、第１挟持部材および第２挟持部材を弾性的に支持する支持部材の材質、寸法、大きさ等を調整することにより、加飾フィルムに作用する張力、及び張力の変化に追随して移動させる加飾フィルムの移動量を適切に設定することができる。   With this configuration, the first clamping member and the second clamping member are elastically supported so as to move toward the cavity, and the seal member is provided on the first clamping member. The decorative film can be moved to the cavity side while airtightly holding the sealed space between the decorative film and the inner surface of the cavity. Also, by adjusting the material, size, size, etc. of the support member that elastically supports the first and second clamping members, the tension acting on the decorative film and the movement following the change in tension are followed. The amount of movement of the decorative film to be made can be set appropriately.

また、前記キャビティは入れ子構造として前記第１金型に形成されるとともに、前記コアは入れ子構造として前記第２金型に形成され、前記クランプ部材の前記第１部材は、前記キャビティ側の入れ子であるキャビ入れ子に収納され、前記クランプ部材の前記第２部材は、型締め時前記コア側の入れ子であるコア入れ子に収納可能に設けられているものとしてもよい。   In addition, the cavity is formed in the first mold as a nested structure, the core is formed in the second mold as a nested structure, and the first member of the clamp member is a cavity-side nested. The second member of the clamp member may be housed in a certain core insert so that the second member of the clamp member can be housed in a core insert that is a insert on the core side during mold clamping.

通常、製造する樹脂成形品が変われば、キャビティ側のキャビ入れ子及びコア側のコア入れ子を変更するとともに、適切に弾性的に支持されるクランプ部材に変更する必要がある。したがって、上記のような構成にすれば、製造する樹脂成形品に対応してキャビ入れ子及びコア入れ子を変更する際に、クランプ部材をその都度適正なものに変更することが容易となる。   Normally, if the resin molded product to be manufactured is changed, it is necessary to change the cavity insert and the core insert to a clamp member that is appropriately elastically supported. Therefore, if it is set as the above structures, when changing the mold insert and the core insert corresponding to the resin molded product to be manufactured, it becomes easy to change the clamp member to an appropriate one each time.

前記挟持部材がキャビティ側に移動するように弾性的に支持されているクランプ部材は、前記密閉空間の吸引時に前記加飾フィルムに作用する張力が大きくなる部分を対象として取り付けられているようにしてもよい。   The clamp member that is elastically supported so that the holding member moves toward the cavity is attached to a portion where a tension acting on the decorative film is increased when the sealed space is sucked. Also good.

このような構成にすれば、すべてのクランプ部材を、挟持部材がキャビティ側に移動可能な構造とする必要がなく、このようなクランプ部材を必要とされる個所にのみ使用すればよいので、コストの上昇を抑制することができる。   With such a configuration, it is not necessary for all the clamping members to have a structure in which the clamping member can move to the cavity side, and it is only necessary to use such a clamping member only where it is necessary. Can be suppressed.

前記吸引通路は、複数の吸引通路からなり、前記複数の吸引通路のうちの少なくとも一部の吸引通路は、前記キャビティにおける複数の角部のうちの、前記密閉空間の空気吸引時に前記加飾フィルムに作用する張力が大きくなる角部に対し開口するように形成されているものとしてもよい。   The suction passage is composed of a plurality of suction passages, and at least some of the suction passages of the plurality of suction passages are the decorative film during air suction of the sealed space among the plurality of corner portions of the cavity. It is good also as what is formed so that it may open with respect to the corner | angular part where the tension | tensile_strength which acts on becomes large.

加飾フィルムとキャビティの内面との間の密閉空間の吸引時に加飾フィルムに作用する張力が大きくなる角部は、加飾フィルムに高い伸び率が要求されるとともに空気がたまり易い。しかし、上記のように構成すれば、この角部から直接空気を吸引することができるので、前述のキャビティ側に移動するように弾性的に支持されるクランプ部材の使用効果と相俟って、加飾フィルムの傷、破れ、皴、局部的な薄肉化を効果的に抑制することができる。   The corners where the tension acting on the decorative film during suction of the sealed space between the decorative film and the inner surface of the cavity is increased, and a high elongation rate is required for the decorative film, and air easily accumulates. However, if configured as described above, air can be directly sucked from this corner, so combined with the use effect of the clamp member elastically supported so as to move to the cavity side, Scratches, tears, wrinkles, and local thinning of the decorative film can be effectively suppressed.

また、本発明に係る樹脂成形品製造方法は、上記何れかのインモールド射出成形装置を用いて樹脂成形品を製作するものである。
インモールド射出成形装置により製作される樹脂成形品は、加飾フィルムとキャビティの内面との間の密閉空間の吸引時、形状変化率の大きいキャビティの角部において加飾フィルムに高い伸び率が要求される。しかし、樹脂成形品が上記インモールド射出成形装置により製造される場合には、このような高い伸び率の要求に対して加飾フィルムの伸び代が確保されているので、傷、破れ、皴、局部的な薄肉化が抑制される。したがって、外観の良好な加飾樹脂成形品を供給することができる。 Moreover, the resin molded product manufacturing method which concerns on this invention manufactures a resin molded product using one of the said in-mold injection molding apparatuses.
The resin molded product produced by the in-mold injection molding device requires a high elongation rate for the decorative film at the corner of the cavity where the shape change rate is large when sucking the sealed space between the decorative film and the inner surface of the cavity. Is done. However, when the resin molded product is manufactured by the in-mold injection molding apparatus, since the allowance for the decorative film is secured for such a high elongation requirement, scratches, tears, wrinkles, Local thinning is suppressed. Therefore, it is possible to supply a decorated resin molded product having a good appearance.

本発明によれば、樹脂成形品の加飾面側に生じやすい加飾フィルムの皴、破れ、傷、或いは、加飾フィルムの局部的な伸びによる着色層の薄肉化やマイクロクラックの発生を抑制することができる。   According to the present invention, it is possible to suppress the occurrence of wrinkles, tears, scratches on the decorative film, which are likely to occur on the decorative surface side of the resin molded product, or thinning of the colored layer and microcracking due to local elongation of the decorative film can do.

本発明の実施の形態に係るインモールド射出成形装置のフィルム送り工程図である。It is a film feeding process figure of the in-mold injection molding apparatus which concerns on embodiment of this invention. 同インモールド射出成形装置のクランプ工程図である。It is a clamp process figure of the same in-mold injection molding device. 同押え工程時のクランプ部材周りの詳細図である。It is detail drawing around the clamp member at the time of the pressing process. 同インモールド射出成形装置により製造される樹脂成形品の一例の外観斜視図である。It is an external appearance perspective view of an example of the resin molded product manufactured with the in-mold injection molding apparatus. 同インモールド射出成形装置におけるクランプ部材の平面配置図である。It is a plane | planar arrangement | positioning figure of the clamp member in the same in-mold injection molding apparatus. 同インモールド射出成形装置の吸引工程図である。It is a suction process figure of the in-mold injection molding device. 同吸引工程におけるクランプ部材周りの詳細図である。It is detail drawing around the clamp member in the suction process. 同吸引工程に関連する参考説明図である。It is reference explanatory drawing relevant to the suction process. 同インモールド射出成形装置の射出工程図である。It is an injection process figure of the in-mold injection molding device. 同射出工程におけるクランプ部材周りの詳細図である。It is detail drawing of the clamp member periphery in the injection process. 同インモールド射出成形装置の取出し工程図である。It is an extraction process figure of the same in-mold injection molding device. 同インモールド射出成形装置により製造される樹脂成形品の他の例の外観斜視図である。It is an external appearance perspective view of the other example of the resin molded product manufactured with the same in-mold injection molding apparatus.

本発明の実施の形態について、以下図面を参照しながら説明する。なお、以下の図面は理解し易くするために、主要な構成要素を模式的に示している。また、図示された各構成要素の縦横等の寸法は、図面作成の都合上実際の寸法とは異なる。また、以下に説明される寸法、構造、材質等は一例であって特に限定されるものではなく、本発明の趣旨から実質的に逸脱しない範囲で種々の変更が可能である。   Embodiments of the present invention will be described below with reference to the drawings. The following drawings schematically show main components for easy understanding. Also, the dimensions of each component shown in the figure are different from the actual dimensions for the convenience of drawing. The dimensions, structures, materials, and the like described below are merely examples, and are not particularly limited, and various changes can be made without departing from the spirit of the present invention.

本実施の形態に係るインモールド射出成形装置の全体構成の概要を図１に基づき説明する。
本実施の形態に係るインモールド射出成形装置は、図１に示すように、製品形状部の加飾面側の形状を形成するキャビティ１１を有する第１金型１０と、製品形状部の非加飾面側の形状を形成するコア２１を有する第２金型２０とを備えたものであって、型開き可能な金型として構成されている。なお、図１０で見て分かるように、キャビティ１１及びコア２１は、中央部から外周傾斜面の途中までの範囲が製品形状に対応する。外周傾斜面におけるその外側は、製品形状部の外側になっている。したがって、コア２１は、製品形状部に対応する形状対応部分２１Ａとその外側の非形状対応部分２１Ｂとの間に製品の肉厚分の段差が形成されている。 An overview of the overall configuration of the in-mold injection molding apparatus according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1, the in-mold injection molding apparatus according to the present embodiment includes a first mold 10 having a cavity 11 that forms a shape on the decorative surface side of a product shape portion, and non-addition of the product shape portion. A second mold 20 having a core 21 that forms the decorative surface side shape is provided, and is configured as a mold that can be opened. As can be seen from FIG. 10, the cavity 11 and the core 21 correspond to the product shape in the range from the center to the middle of the outer peripheral inclined surface. The outer side of the outer peripheral inclined surface is the outer side of the product shape portion. Accordingly, the core 21 has a step corresponding to the product thickness between the shape corresponding portion 21A corresponding to the product shape portion and the non-shape corresponding portion 21B outside thereof.

また、本インモールド射出成形装置は、加飾フィルム３０をクランプするクランプ部材４０を備えたものである。クランプ部材４０は、第１金型１０に取り付けられている第１部材５０と、第２金型２０側にあって、第１金型１０に対し遠近方向に移動可能に取り付けられる第２部材６０とから成る。このクランプ部材４０は、第１部材５０と第２部材６０とにより加飾フィルム３０を両面から挟持するものである。このために、クランプ部材４０には、加飾フィルム３０を両面から挟持するための挟持部材が設けられている。この挟持部材は、図３に示すように、第１部材５０に設けられた第１挟持部材５１と第２部材６０に設けられた第２挟持部材６１とで加飾フィルム３０を両面から挟持するものであって、加飾フィルム３０を挟み込んだままキャビティ１１側に移動可能に形成されている。なお、クランプ部材４０の詳細については後述する。   The in-mold injection molding apparatus includes a clamp member 40 that clamps the decorative film 30. The clamp member 40 is a first member 50 attached to the first mold 10 and a second member 60 which is on the second mold 20 side and attached to the first mold 10 so as to be movable in the perspective direction. It consists of. The clamp member 40 sandwiches the decorative film 30 from both sides by the first member 50 and the second member 60. For this purpose, the clamping member 40 is provided with a clamping member for clamping the decorative film 30 from both sides. As shown in FIG. 3, the sandwiching member sandwiches the decorative film 30 from both sides with a first sandwiching member 51 provided on the first member 50 and a second sandwiching member 61 provided on the second member 60. It is a thing, Comprising: The decorative film 30 is inserted | pinched and it is formed so that a movement to the cavity 11 side is possible. The details of the clamp member 40 will be described later.

第１金型１０は、固定型であって、キャビティ１１が入れ子構造として形成されている。以下この入れ子をキャビ入れ子１２と称する。キャビ入れ子１２は、キャビティ１１が形成される中央部の肉厚に比べてキャビティ１１外側の端部が薄く形成され、この薄く形成された部分に第１部材５０の取付部７０が形成されている。   The first mold 10 is a fixed mold, and the cavity 11 is formed as a nested structure. Hereinafter, this nesting is referred to as a cabinet nesting 12. The cavity insert 12 is formed such that the end portion outside the cavity 11 is thinner than the thickness of the central portion where the cavity 11 is formed, and the attachment portion 70 of the first member 50 is formed in this thinly formed portion. .

また、第１金型１０は、キャビティ１１の外側に第２金型２０との分割面である第１分割面１３を有する。また、第１金型１０には、図示しない吸引装置に連通する吸引通路１４が形成されており、この吸引通路１４はキャビ入れ子１２内において複数の吸引通路１４Ａ，１４Ｂに分岐されている。複数の吸引通路１４Ａ，１４Ｂは、キャビティ１１の内面角部の周辺の底面に開口するように形成されている。   The first mold 10 has a first divided surface 13 that is a divided surface with the second mold 20 outside the cavity 11. Further, a suction passage 14 communicating with a suction device (not shown) is formed in the first mold 10, and this suction passage 14 is branched into a plurality of suction passages 14 </ b> A and 14 </ b> B in the cabinet insert 12. The plurality of suction passages 14 </ b> A and 14 </ b> B are formed so as to open to the bottom surface around the inner corner of the cavity 11.

第２金型２０は、可動型であって、コア２１が入れ子構造として形成されている。以下この入れ子をコア入れ子２２と称する。このコア入れ子２２には、溶融樹脂を流し込むためのスプル２３と、クランプ部材４０を構成する第２部材６０を収容する収容凹部２４が形成されている。   The second mold 20 is a movable mold, and the core 21 is formed as a nested structure. Hereinafter, this nesting is referred to as a core nesting 22. The core insert 22 is formed with a sprue 23 for pouring molten resin and a housing recess 24 for housing the second member 60 constituting the clamp member 40.

また、第２金型２０は、コア２１の外側に第１金型１０との分割面である第２分割面２５を有する。なお、コア２１は、前述のように、製品対応の形状対応部分２１Ａとその外側の非形状対応部分２１Ｂとでは製品の肉厚分の段付きになっており、非形状対応部分２１Ｂの部分がキャビティ１１の内面とが加飾フィルム３０を挟んで突き合わされる構造となっている（射出工程時の図１０参照）。   The second mold 20 has a second divided surface 25 that is a divided surface with the first mold 10 outside the core 21. As described above, the core 21 has a step corresponding to the thickness of the product at the shape-corresponding portion 21A corresponding to the product and the non-shape-corresponding portion 21B outside the product. It has a structure in which the inner surface of the cavity 11 is abutted across the decorative film 30 (see FIG. 10 during the injection process).

また、第２金型２０には、図示省略されているが、コア入れ子２２を貫通する位置に、第２部材６０を第１金型１０に対し遠近方向に移動させるためのアーム（不図示）を貫通させる貫通孔（不図示）が形成されている。そして、この第２部材６０は、このアームを介して移動装置（不図示）により移動制御されている。   Although not shown in the second mold 20, an arm (not shown) for moving the second member 60 in the perspective direction with respect to the first mold 10 to a position penetrating the core insert 22. A through-hole (not shown) that penetrates the hole is formed. The movement of the second member 60 is controlled by a moving device (not shown) via this arm.

本インモールド射出成形装置に用いられる加飾フィルム３０は、従来のものと同様のものであって、基体フィルム３１上に転写層３２を備えている。また、図面上で明示されていないが、基体フィルム３１と転写層３２との間には剥離層が形成され、転写層３２の表面側(すなわち製品側)には接着層が設けられている。   The decorative film 30 used in the in-mold injection molding apparatus is the same as the conventional one, and includes a transfer layer 32 on a base film 31. Although not clearly shown in the drawing, a release layer is formed between the base film 31 and the transfer layer 32, and an adhesive layer is provided on the surface side (that is, the product side) of the transfer layer 32.

次に、クランプ部材４０について図３に基づき、より具体的に説明する。
キャビ入れ子１２の取付部７０に収納される第１部材５０は、加飾フィルム３０を挟持する断面四角形の棒状の第１挟持部材５１と、第１挟持部材５１と加飾フィルム３０との間に取り付けられるシール部材としてのＯリング５２と、第１挟持部材５１をキャビ入れ子１２に取り付けるための複数の第１取付ボルト５３とを備えている。また、第１部材５０は、第１挟持部材５１の側面５１Ｃと取付部７０のキャビティ側の側面７１Ａとの間に介在させる第１弾性部材５４を備えている。 Next, the clamp member 40 will be described more specifically based on FIG.
The first member 50 accommodated in the attachment portion 70 of the cabinet insert 12 includes a bar-shaped first sandwiching member 51 that sandwiches the decorative film 30, and the first sandwiching member 51 and the decorative film 30. An O-ring 52 as a seal member to be attached and a plurality of first attachment bolts 53 for attaching the first holding member 51 to the cabinet insert 12 are provided. Further, the first member 50 includes a first elastic member 54 interposed between the side surface 51C of the first clamping member 51 and the side surface 71A on the cavity side of the mounting portion 70.

一方、キャビ入れ子１２に設けられた取付部７０は、第１挟持部材５１を収納するように、第２金型２０との第１分割面１３側から窪むように形成された第１凹部７１と、その反対側の面から窪むように形成された第１取付ボルト５３の頭部５３Ｃを収納する第２凹部７２とを有する。また、取付部７０は、第１凹部７１と第２凹部７２との間に形成された、第１分割面１３に平行に形成された第１取付壁部７３とを有している。   On the other hand, the mounting portion 70 provided in the cabinet insert 12 has a first recess 71 formed so as to be recessed from the first dividing surface 13 side with the second mold 20 so as to accommodate the first clamping member 51; A second recess 72 for accommodating the head portion 53C of the first mounting bolt 53 formed so as to be recessed from the opposite surface. The attachment portion 70 has a first attachment wall portion 73 formed between the first recess 71 and the second recess 72 and formed in parallel with the first dividing surface 13.

また、このような第１部材５０を含むクランプ部材４０は、キャビティ１１の外側全域で加飾フィルム３０を挟持可能とするために、キャビティ１１の外周を取り巻くように配置されている。例えば、成形される製品が図４に示す深堀形状の箱型成形品８０の場合には、図５に示すように、第１部材５０と第２部材６０とから成るクランプ部材４０がキャビティ１１の外周に沿う四辺の位置８１，８２，８３，８４と、この四辺の角部を斜めに繋ぐ四つのコーナ部８５，８６，８７、８８とに取り付けられる。   In addition, the clamp member 40 including the first member 50 is disposed so as to surround the outer periphery of the cavity 11 so that the decorative film 30 can be sandwiched across the entire outside of the cavity 11. For example, when the product to be molded is a deep box-shaped molded product 80 shown in FIG. 4, the clamp member 40 composed of the first member 50 and the second member 60 is formed in the cavity 11 as shown in FIG. 5. It is attached to positions 81, 82, 83, 84 on the four sides along the outer periphery, and four corner portions 85, 86, 87, 88 that diagonally connect the corners of the four sides.

ここで、前述の第１部材５０について、さらに具体的に説明する。
第１挟持部材５１は、金属、プラスチックなどの剛性のある材料により形成された、断面四角形形状の棒状のものである。この第１挟持部材５１は、第２金型２０との第１分割面１３側にＯリング５２を取り付けるためのＯリング溝５１Ａが長手方向に形成され、第１分割面１３の反対側の面には第１取付ボルト５３を螺合するねじ穴５１Ｂが長手方向に適宜の間隔を置いて形成されている。Ｏリング５２は、加飾フィルム３０と第１挟持部材５１との間をシールするとともに、第１部材５０と第２部材６０とで弾性的に把持して滑らないように保持する機能を有する。 Here, the first member 50 described above will be described more specifically.
The first clamping member 51 is a rod-shaped member having a quadrangular cross section formed of a rigid material such as metal or plastic. In the first clamping member 51, an O-ring groove 51 </ b> A for attaching an O-ring 52 is formed in the longitudinal direction on the first dividing surface 13 side with the second mold 20, and the surface opposite to the first dividing surface 13. A screw hole 51B for screwing the first mounting bolt 53 is formed at an appropriate interval in the longitudinal direction. The O-ring 52 has a function of sealing between the decorative film 30 and the first sandwiching member 51 and holding the elastic member between the first member 50 and the second member 60 so as not to slip.

第１取付ボルト５３は、取付部７０の第１取付壁部７３の第１貫通孔７３Ａを貫通する軸部５３Ａと、第１挟持部材５１のねじ穴５１Ｂに螺合されるねじ部５３Ｂと、座金組み込み六角穴付きの頭部５３Ｃとを備えている。軸部５３Ａは、ねじ部５３Ｂより大径に形成されている。軸部５３Ａの長さは、第１取付壁部７３の厚さより若干大きく形成されており、第１取付ボルト５３を締結しても第１取付ボルト５３が第１取付壁部７３に対し固定されないように形成されている。   The first mounting bolt 53 includes a shaft portion 53A that passes through the first through hole 73A of the first mounting wall portion 73 of the mounting portion 70, a screw portion 53B that is screwed into the screw hole 51B of the first clamping member 51, And a head portion 53C with a hexagonal hole incorporating a washer. The shaft portion 53A is formed with a larger diameter than the screw portion 53B. The length of the shaft portion 53 </ b> A is slightly larger than the thickness of the first mounting wall portion 73, and the first mounting bolt 53 is not fixed to the first mounting wall portion 73 even when the first mounting bolt 53 is fastened. It is formed as follows.

第１弾性部材５４は、一側が第１挟持部材５１の側面５１Ｃに固定され、他側において第１凹部７１の側面７１Ａに固定されている。加飾成形品の製造工程における吸引工程において、加飾フィルム３０に張力が作用した場合に、第１弾性部材５４が圧縮される。そして、これにより第１挟持部材５１は、第２挟持部材６１との間に加飾フィルム３０を挟持した状態のままキャビティ１１側に移動できるように構成されている。第１弾性部材５４の材料としては、例えば、ニトリルゴム、アクリルゴム、フッ素ゴム等の合成ゴムや、天然ゴムを用いることができる。なお、この第１弾性部材５４は、上記機能の他にキャビ入れ子１２の第１凹部７１の側面７１Ａと第１挟持部材５１の側面５１Ｃとの間をシールする機能をも有する。   One side of the first elastic member 54 is fixed to the side surface 51 </ b> C of the first clamping member 51, and the other side is fixed to the side surface 71 </ b> A of the first recess 71. In the suction process in the manufacturing process of the decorative molded product, the first elastic member 54 is compressed when tension is applied to the decorative film 30. And thereby, the 1st clamping member 51 is comprised so that it can move to the cavity 11 side in the state which clamped the decorating film 30 between the 2nd clamping members 61. FIG. As a material of the first elastic member 54, for example, synthetic rubber such as nitrile rubber, acrylic rubber, and fluorine rubber, or natural rubber can be used. The first elastic member 54 has a function of sealing between the side surface 71A of the first recess 71 of the cavity insert 12 and the side surface 51C of the first clamping member 51 in addition to the above function.

次に、取付部７０について、さらに具体的に説明する。
第１凹部７１は、断面四角形の凹部である。第１凹部７１の深さは、第１挟持部材５１の厚み寸法（第１分割面１３に対し直交する方向の寸法）と略等しく形成されている、また、第１凹部７１の第１分割面１３と平行な方向の寸法は、第１挟持部材５１との間に所定の隙間が形成される大きさとされている。特に、キャビティ１１側の隙間は、製造工程における吸引工程時に加飾フィルム３０に作用する張力を緩和するように第１弾性部材５４を変形させ、その変形に伴い第１挟持部材５１が図３の図示位置からキャビティ１１側に移動できる寸法を有するように形成されている。 Next, the attachment part 70 will be described more specifically.
The first recess 71 is a recess having a quadrangular cross section. The depth of the first recess 71 is formed to be substantially equal to the thickness dimension of the first clamping member 51 (dimension in the direction orthogonal to the first split surface 13), and the first split surface of the first recess 71. The dimension in the direction parallel to 13 is such that a predetermined gap is formed between the first clamping member 51 and the dimension. In particular, the gap on the cavity 11 side deforms the first elastic member 54 so as to relieve the tension acting on the decorative film 30 during the suction step in the manufacturing process, and the first clamping member 51 in FIG. It is formed so as to have a dimension capable of moving from the illustrated position to the cavity 11 side.

また、第１凹部７１の第２金型２０側は、第１金型１０における第１分割面１３に押し付けられた加飾フィルム３０とのシールを行うＯリング５２を突出させて取り付けるために、第１分割面１３から少し凹んだ凹面７１Ｂに形成されている。この凹面７１Ｂは、第１凹部７１の周辺に拡がる大きさに形成されている。   Also, the second mold 20 side of the first recess 71 is attached to project the O-ring 52 that seals with the decorative film 30 pressed against the first dividing surface 13 in the first mold 10. A concave surface 71 </ b> B that is slightly recessed from the first divided surface 13 is formed. The concave surface 71B is formed in a size that extends around the first concave portion 71.

第２凹部７２は、第１取付ボルト５３の頭部５３Ｃを収納するものであり、頭部５３Ｃの先端が第２凹部７２から突出しないような深さ寸法に形成されている。また、第２凹部７２の第１分割面１３と平行な方向の寸法は、頭部５３Ｃが第１挟持部材５１とともに図示位置からキャビティ１１側に移動できる大きさに形成されている。   The second recess 72 accommodates the head portion 53 </ b> C of the first mounting bolt 53, and has a depth dimension such that the tip of the head portion 53 </ b> C does not protrude from the second recess 72. Further, the dimension of the second recess 72 in the direction parallel to the first dividing surface 13 is formed such that the head 53C can move from the illustrated position to the cavity 11 side together with the first clamping member 51.

第１取付壁部７３は、第１凹部７１と第２凹部７２との間に形成され、第２凹部７２側から第１取付ボルト５３を挿入し、この第１取付ボルト５３のねじ部５３Ｂを第１挟持部材５１のねじ穴５１Ｂに螺合することにより、第１挟持部材５１をキャビティ１１側へ移動可能に取り付けるものである。このために、第１取付壁部７３には、第１取付ボルト５３を遊貫してキャビティ１１側に移動可能とする長孔形状の第１貫通孔７３Ａが形成されるとともに、第１取付壁部７３の厚さを第１取付ボルト５３の軸部５３Ａの長さより若干小さい寸法に形成されている。   The first mounting wall 73 is formed between the first recess 71 and the second recess 72, and the first mounting bolt 53 is inserted from the second recess 72 side, and the threaded portion 53B of the first mounting bolt 53 is inserted. The first clamping member 51 is movably attached to the cavity 11 side by being screwed into the screw hole 51B of the first clamping member 51. For this purpose, the first mounting wall 73 is provided with a first through-hole 73A having a long hole shape that allows the first mounting bolt 53 to pass through and move to the cavity 11 side. The thickness of the portion 73 is slightly smaller than the length of the shaft portion 53 </ b> A of the first mounting bolt 53.

次に、クランプ部材４０を構成する第２部材６０について説明する。
図３に示すように、第２部材６０は、第１挟持部材５１と対になって加飾フィルム３０を挟持する第２挟持部材６１と、これを取り付ける取付部材６２と、第２挟持部材６１を取付部材６２に取り付ける複数の第２取付ボルト６３と、第２部材６０を弾性的にキャビティ１１側に移動させるための第２弾性部材６４とを備えている。 Next, the 2nd member 60 which comprises the clamp member 40 is demonstrated.
As shown in FIG. 3, the second member 60 is paired with the first holding member 51 to hold the decorative film 30, a mounting member 62 for attaching the second holding member 61, and a second holding member 61. And a second elastic member 64 for elastically moving the second member 60 to the cavity 11 side.

第２挟持部材６１は、第１挟持部材５１と同様に金属、プラスチックなどの剛性のある材料により形成された、断面四角形形状の棒状のものである。第２挟持部材６１の加飾フィルム３０側の面は平らに形成され、その反対側の面に第２取付ボルト６３を螺合するためのねじ穴６１Ａが、長手方向に適宜の間隔を設けて複数開口するように形成されている。   Similar to the first clamping member 51, the second clamping member 61 is formed of a rigid material such as metal or plastic and has a rod-like shape with a square cross section. The surface of the second clamping member 61 on the side of the decorative film 30 is formed flat, and a screw hole 61A for screwing the second mounting bolt 63 to the opposite surface is provided with an appropriate interval in the longitudinal direction. A plurality of openings are formed.

取付部材６２は、図示しない前述のアームにより第１金型１０に対し遠近可能となるように第２金型２０に取り付けられている。そして、取付部材６２は、金属、プラスチックなどの剛性のある材料により形成されたものであって、型締めの際に第２金型２０の収容凹部２４内に収容される大きさに形成されている（図１０参照）。また、取付部材６２は、概略断面形状が四角形の棒状部材であって、加飾フィルム３０側に第２挟持部材６１を収納する第３凹部６２Ａが形成され、加飾フィルム３０側に第２取付ボルト６３の頭部６３Ｃを収納する第４凹部６２Ｂが形成されている。また、第３凹部６２Ａと第４凹部６２Ｂとの間に第１金型１０との第２分割面２５と平行な第２取付壁部６２Ｃが形成されている。   The attachment member 62 is attached to the second mold 20 so as to be close to the first mold 10 by the aforementioned arm (not shown). The mounting member 62 is formed of a rigid material such as metal or plastic, and is formed to have a size that can be accommodated in the accommodating recess 24 of the second mold 20 during mold clamping. (See FIG. 10). Further, the mounting member 62 is a rod-shaped member having a substantially cross-sectional shape, and has a third recess 62A for housing the second clamping member 61 on the decorative film 30 side, and the second mounting on the decorative film 30 side. A fourth recess 62B for accommodating the head 63C of the bolt 63 is formed. Further, a second mounting wall 62C parallel to the second dividing surface 25 of the first mold 10 is formed between the third recess 62A and the fourth recess 62B.

第３凹部６２Ａは、断面四角形の凹部である。第３凹部６２Ａの深さは、第２挟持部材６１の厚み寸法（第１分割面１３に対し直交する方向の寸法）より小さく形成されている。したがって、第１挟持部材５１と第２挟持部材６１とで加飾フィルム３０を挟持した状態において、取付部材６２と加飾フィルム３０との間に所定寸法の隙間が形成される。これにより、製造工程の吸引工程において、取付部材６２が加飾フィルム３０の移動を妨げないように配慮されている。また、第３凹部６２Ａの第２分割面２５（図１０参照）と平行な方向の寸法は、第２挟持部材６１の側面６１Ｂと第３凹部６２Ａの内側面との間に所定の隙間が形成される大きさとされている。特に、キャビティ１１側の隙間は、製造工程の吸引工程時に加飾フィルム３０に作用する張力を緩和するように第２弾性部材６４を変形させ、その変形に伴い第２挟持部材６１が図３の図示位置からキャビティ１１側に移動できる寸法を有するように形成されている。   The third recess 62A is a recess having a square cross section. The depth of the third recess 62A is formed smaller than the thickness dimension of the second clamping member 61 (dimension in the direction orthogonal to the first dividing surface 13). Therefore, in a state where the decorative film 30 is sandwiched between the first sandwiching member 51 and the second sandwiching member 61, a gap of a predetermined dimension is formed between the attachment member 62 and the decorative film 30. Thereby, in the suction process of a manufacturing process, it considers so that the attachment member 62 may not prevent the movement of the decorating film 30. FIG. The dimension of the third recess 62A in the direction parallel to the second dividing surface 25 (see FIG. 10) is such that a predetermined gap is formed between the side surface 61B of the second clamping member 61 and the inner side surface of the third recess 62A. It is supposed to be a size. In particular, the gap on the cavity 11 side deforms the second elastic member 64 so as to relieve the tension acting on the decorative film 30 during the suction step of the manufacturing process, and the second clamping member 61 is deformed as shown in FIG. It is formed so as to have a dimension capable of moving from the illustrated position to the cavity 11 side.

第４凹部６２Ｂは、第２取付ボルト６３の頭部６３Ｃを収納するものであるが、頭部６３Ｃの先端が第４凹部６２Ｂから突出する程度の深さに形成されている。また、第４凹部６２Ｂの第２分割面２５と平行な方向の寸法は、頭部６３Ｃが第２挟持部材６１とともに図示位置からキャビティ１１側に移動できる大きさに形成されている。   The fourth recess 62B accommodates the head 63C of the second mounting bolt 63, and is formed to a depth such that the tip of the head 63C protrudes from the fourth recess 62B. The dimension of the fourth recess 62B in the direction parallel to the second dividing surface 25 is such that the head 63C can move together with the second holding member 61 from the illustrated position toward the cavity 11 side.

第２取付壁部６２Ｃは、第３凹部６２Ａと第４凹部６２Ｂとの間に形成され、第４凹部６２Ｂ側から第２取付ボルト６３を挿入し、この第２取付ボルト６３のねじ部６３Ｂを第２挟持部材６１のねじ穴６１Ａに螺合することにより、第２挟持部材６１をキャビティ１１側へ移動可能に取り付けるものである。このために、第２取付壁部６２Ｃには、第２取付ボルト６３を遊貫してキャビティ１１側に移動可能とする長穴形状の第２貫通孔６２Ｄが形成されるとともに、第２取付壁部６２Ｃの厚さを第２取付ボルト６３の軸部６３Ａの長さより若干小さい寸法に形成されている。   The second mounting wall 62C is formed between the third recess 62A and the fourth recess 62B, and the second mounting bolt 63 is inserted from the fourth recess 62B side, and the threaded portion 63B of the second mounting bolt 63 is inserted. The second clamping member 61 is movably attached to the cavity 11 side by being screwed into the screw hole 61A of the second clamping member 61. For this purpose, the second mounting wall 62C is formed with a second through hole 62D having a long hole shape that allows the second mounting bolt 63 to pass through and move to the cavity 11 side. The thickness of the part 62 </ b> C is formed to be slightly smaller than the length of the shaft part 63 </ b> A of the second mounting bolt 63.

第２取付ボルト６３は、第２取付壁部６２Ｃに形成されている第２貫通孔６２Ｄを貫通する軸部６３Ａと、第２挟持部材６１のねじ穴６１Ａに螺合されるねじ部６３Ｂと、座金組み込み六角穴付きの頭部６３Ｃとを備えている。軸部６３Ａは、ねじ部６３Ｂより大径に形成されている。軸部６３Ａの長さは、第２取付壁部６２Ｃの厚さより若干大きく形成されており、第２取付ボルト６３を締結しても第２取付ボルト６３が取付部材６２に対し固定されないように形成されている。   The second mounting bolt 63 includes a shaft portion 63A that passes through the second through hole 62D formed in the second mounting wall portion 62C, a screw portion 63B that is screwed into the screw hole 61A of the second clamping member 61, and And a head 63C having a hexagonal hole with a built-in washer. The shaft portion 63A is formed with a larger diameter than the screw portion 63B. The length of the shaft portion 63A is slightly larger than the thickness of the second mounting wall portion 62C, and is formed so that the second mounting bolt 63 is not fixed to the mounting member 62 even when the second mounting bolt 63 is fastened. Has been.

第２弾性部材６４は、一側が第２挟持部材６１の側面６１Ｂに固定され、他側において第３凹部６２Ａのキャビティ１１側の側面に固定されている。樹脂成形品の製造工程の吸引工程において、加飾フィルム３０に張力が作用した場合に、第２弾性部材６４が圧縮される。これにより第２挟持部材６１は、第１挟持部材５１との間に加飾フィルム３０を挟持した状態のままキャビティ１１側に移動できるように構成されている。第２弾性部材６４の材料は、第１弾性部材５４と同一である。   One side of the second elastic member 64 is fixed to the side surface 61B of the second clamping member 61, and the other side is fixed to the side surface of the third recess 62A on the cavity 11 side. In the suction process of the manufacturing process of the resin molded product, the second elastic member 64 is compressed when tension is applied to the decorative film 30. Thereby, the 2nd clamping member 61 is comprised so that it can move to the cavity 11 side in the state which clamped the decorating film 30 between the 1st clamping members 51. FIG. The material of the second elastic member 64 is the same as that of the first elastic member 54.

次に、本実施の形態の動作の説明として、上記のように構成されたインモールド射出成形装置による樹脂成形品の製造方法について説明する。
図１に示すように、フィルム送り工程では、加飾フィルム３０がフィルム送り装置（不図示）により型開きしている金型内へ送られる、ここでは、クランプ部材４０の第２部材６０が第１金型１０から離れた位置に移動保持されており、加飾フィルム３０はクランプ部材４０の第２部材６０と第１金型１０との間を走向する。 Next, as an explanation of the operation of the present embodiment, a method for manufacturing a resin molded product using the in-mold injection molding apparatus configured as described above will be described.
As shown in FIG. 1, in the film feeding step, the decorative film 30 is fed into a mold opened by a film feeding device (not shown). Here, the second member 60 of the clamp member 40 is the first member 60. The decorative film 30 moves between the second member 60 of the clamp member 40 and the first mold 10 and is moved and held at a position away from the first mold 10.

図２に示すように、次のクランプ工程では、第１金型１０から離れた位置に保持されていたクランプ部材４０の第２部材６０が第１金型１０における第２金型２０との第１分割面１３まで移動する。そして、第２部材６０の第２挟持部材６１と第１部材５０の第１挟持部材５１との間で加飾フィルム３０を保持する。そして、キャビティ１１の外周部で加飾フィルム３０を、第１金型１０における第２金型２０との第１分割面１３へ押し付ける。これにより、加飾フィルム３０とキャビティ１１の内面との間に密閉空間が形成される。キャビティ１１の外周における加飾フィルム３０とキャビティ１１の内面との間のシールは、加飾フィルム３０を第１分割面１３へ押し付けることに加えて、第１挟持部材５１と加飾フィルム３０との間に設けられたＯリング５２と、第１挟持部材５１とキャビ入れ子１２との間に設けられた第１弾性部材５４とにより厳密に行われている。このときの状態は、図３に示すように、未だ加飾フィルム３０に張力が作用していない状態であって、第１弾性部材５４及び第２弾性部材６４が未だ圧縮されていない。したがって、クランプ部材４０は、キャビティ１１に対し遠い側の位置にある。   As shown in FIG. 2, in the next clamping step, the second member 60 of the clamp member 40 held at a position distant from the first mold 10 is replaced with the second mold 20 in the first mold 10. It moves to the 1 division surface 13. The decorative film 30 is held between the second clamping member 61 of the second member 60 and the first clamping member 51 of the first member 50. Then, the decorative film 30 is pressed against the first divided surface 13 of the first mold 10 with the second mold 20 at the outer periphery of the cavity 11. Thereby, a sealed space is formed between the decorative film 30 and the inner surface of the cavity 11. The seal between the decorative film 30 on the outer periphery of the cavity 11 and the inner surface of the cavity 11 includes pressing the decorative film 30 against the first divided surface 13, and in addition, the first clamping member 51 and the decorative film 30. This is strictly performed by an O-ring 52 provided therebetween and a first elastic member 54 provided between the first clamping member 51 and the cabinet insert 12. As shown in FIG. 3, the state at this time is a state where the tension is not yet applied to the decorative film 30, and the first elastic member 54 and the second elastic member 64 are not yet compressed. Therefore, the clamp member 40 is at a position far from the cavity 11.

次に、図６に示すように、吸引工程では、吸引通路１４に連通する吸引装置(不図示)が駆動され、吸引通路１４，１４Ａ，１４Ｂにより加飾フィルム３０とキャビティ１１の内面との間の密閉空間（図２参照）が真空引きされる。これにより、図６及び図７に示すように、加飾フィルム３０がキャビティ１１の内面に密着して沿うように変形する。また、クランプ部材４０により挟持される加飾フィルム３０に張力が作用する。また、図７に示すように、クランプ部材４０において、第１弾性部材５４及び第２弾性部材６４が第１挟持部材５１及び第２挟持部材６１を介して圧縮力を受けて圧縮される。この結果、クランプ部材４０により挟持された加飾フィルム３０がキャビティ１１側へ引き込まれるため、キャビティ１１内面の角部における加飾フィルム３０の張力及び変形が緩和される。   Next, as shown in FIG. 6, in the suction step, a suction device (not shown) communicating with the suction passage 14 is driven, and between the decorative film 30 and the inner surface of the cavity 11 by the suction passages 14, 14 </ b> A, 14 </ b> B. The closed space (see FIG. 2) is evacuated. Thereby, as shown in FIG.6 and FIG.7, the decorating film 30 deform | transforms so that it may closely_contact | adhere to the inner surface of the cavity 11, and may follow. Further, a tension acts on the decorative film 30 held by the clamp member 40. Further, as shown in FIG. 7, in the clamp member 40, the first elastic member 54 and the second elastic member 64 are compressed by receiving a compression force via the first holding member 51 and the second holding member 61. As a result, the decorative film 30 sandwiched by the clamp member 40 is drawn toward the cavity 11, so that the tension and deformation of the decorative film 30 at the corners on the inner surface of the cavity 11 are alleviated.

因みに、従来のようにクランプ部材４０の固定により加飾フィルム３０が移動しない構造であって、キャビティ１１内面の角部付近に吸引通路を有していない構造の場合は、吸引工程においてクランプ部材４０に挟持されている加飾フィルム３０がキャビティ１１内面に引き込まれることがない。このために、図８に示すように、キャビティ１１内面の角部における加飾フィルム３０の密着が不足し、角部に空間部１１０が残る。また、この場合は、真空引きにより加飾フィルム３０に過大な張力が作用したり、溶融樹脂射出時に空間部１１０に位置する加飾フィルム３０に大きな力が作用したりする。これら要因により、加飾フィルム３０に皴、破れ、傷、局部的に箔肉化が生るという問題があり、樹脂成形品の外観が低下するという問題が生じていた。しかし、本実施の形態の場合にはこのような問題を緩和することができる。   Incidentally, in the case of a structure in which the decorative film 30 does not move by fixing the clamp member 40 as in the prior art and does not have a suction passage in the vicinity of the corner of the inner surface of the cavity 11, the clamp member 40 in the suction step. The decorative film 30 sandwiched between the two is not drawn into the inner surface of the cavity 11. For this reason, as shown in FIG. 8, the adhesion of the decorative film 30 at the corners of the inner surface of the cavity 11 is insufficient, and the space 110 remains at the corners. Moreover, in this case, excessive tension acts on the decorative film 30 by evacuation, or a large force acts on the decorative film 30 located in the space 110 when the molten resin is injected. Due to these factors, there is a problem that the decorative film 30 is wrinkled, torn, scratched, or locally thickened, and the appearance of the resin molded product is deteriorated. However, in the case of this embodiment, such a problem can be alleviated.

なお、樹脂成形品の形状や大きさが異なると、吸引工程において加飾フィルム３０に作用する張力が変わり、必要とする移動距離も変わってくる。したがって、樹脂成形品の形状や大きさに応じ第１弾性部材５４及び第２弾性部材６４の形状、大きさ、材質を調節し、クランプ部材４０の挟持部材の移動量、すなわち、加飾フィルム３０の引込量を調節することが必要である。   In addition, if the shape and size of the resin molded product are different, the tension acting on the decorative film 30 in the suction process is changed, and the required moving distance is also changed. Therefore, the shape, size, and material of the first elastic member 54 and the second elastic member 64 are adjusted according to the shape and size of the resin molded product, and the amount of movement of the clamping member of the clamp member 40, that is, the decorative film 30. It is necessary to adjust the amount of retraction.

次に、吸引工程に続いて射出工程が行われる。真空引きの開始後又は真空引き終了後に金型が閉じられて、金型の内部に成形空間が形成され、射出工程が行われる。
図９、図１０に示すように、この実施の形態においては、クランプ部材４０により加飾フィルム３０が挟持された状態のまま第２金型２０が第１金型１０の方へ移動して型締めが行われる。そして、型締めされた後、射出工程に移行し、スプル２３から金型内部の成形空間に溶融樹脂２６が流し込まれる。 Next, an injection process is performed following the suction process. After the start of evacuation or after the end of evacuation, the mold is closed, a molding space is formed inside the mold, and an injection process is performed.
As shown in FIGS. 9 and 10, in this embodiment, the second mold 20 moves toward the first mold 10 while the decorative film 30 is held by the clamp member 40. Tightening is done. Then, after the mold is clamped, the process proceeds to an injection process, and the molten resin 26 is poured from the sprue 23 into the molding space inside the mold.

このとき、加飾フィルム３０は、溶融樹脂２６からの伝熱によりさらに軟化する。そして、流動する溶融樹脂２６と接触することにより、加飾フィルム３０の各部分が成形空間内において、溶融樹脂２６が最後に到達する予定の領域の方へ延ばされた状態で、溶融樹脂２６の射出が終了する。   At this time, the decorative film 30 is further softened by heat transfer from the molten resin 26. The molten resin 26 is brought into contact with the flowing molten resin 26 in a state where each part of the decorative film 30 is extended toward a region where the molten resin 26 will finally reach in the molding space. Is finished.

溶融樹脂２６が成形空間内に充填された後、溶融樹脂２６は冷却されて固化する。そして溶融樹脂２６が固化した後、型開きされて取出し工程に移行する。
このとき、図１１に示すように、固化した樹脂からなる成形品、この場合は箱型成形品８０が第１金型１０から離れるときに、加飾フィルム３０の転写層３２が成形品側にくっ付いて転写される。そして、型開きした後、ロボットなどにより成形品が金型から例えば図示矢印で示す方向へ取り出される。 After the molten resin 26 is filled in the molding space, the molten resin 26 is cooled and solidified. Then, after the molten resin 26 is solidified, the mold is opened and the process proceeds to an extraction process.
At this time, as shown in FIG. 11, when the molded product made of the solidified resin, in this case, the box-shaped molded product 80 is separated from the first mold 10, the transfer layer 32 of the decorative film 30 is placed on the molded product side. It sticks and is transcribed. Then, after the mold is opened, the molded product is taken out from the mold in a direction indicated by an arrow, for example, by a robot or the like.

(効果)
本実施の形態に係るインモールド射出成形装置は、以上のように構成されているので、次のような効果を奏することができる。 (effect)
Since the in-mold injection molding apparatus according to the present embodiment is configured as described above, the following effects can be achieved.

（１）加飾フィルム３０は、型開き時にキャビティ１１の外側でクランプ部材４０により挟持拘束されているが、加飾フィルム３０とキャビティ１１内面との間の密閉空間の空気を真空吸引する時に、加飾フィルム３０に作用する張力により、加飾フィルム３０がクランプ部材４０により挟持拘束された状態のままキャビティ１１側へ移動する。これにより、加飾フィルム３０とキャビティ１１内面との間の密閉空間の吸引時に、加飾フィルム３０がキャビティ１１の２次元或いは３次元の角部に引き込まれ、キャビティ１１の角部における加飾フィルム３０に必要とされる伸び代や変形量が緩和される。このため、加飾フィルム３０の破れ、傷、局部的な伸びによる着色層の薄肉化の発生を抑制することができる。   (1) Although the decorative film 30 is clamped and restrained by the clamp member 40 outside the cavity 11 when the mold is opened, when vacuuming the air in the sealed space between the decorative film 30 and the inner surface of the cavity 11, Due to the tension acting on the decorative film 30, the decorative film 30 moves toward the cavity 11 while being clamped and restrained by the clamp member 40. Thereby, at the time of suction of the sealed space between the decorative film 30 and the cavity 11, the decorative film 30 is drawn into the two-dimensional or three-dimensional corner of the cavity 11, and the decorative film at the corner of the cavity 11 is drawn. The elongation allowance and the amount of deformation required for 30 are alleviated. For this reason, generation | occurrence | production of the thinning of the colored layer by the tear of the decoration film 30, a damage | wound, and local elongation can be suppressed.

（２）クランプ部材４０は、第１部材５０の第１挟持部材５１と第２部材６０の第２挟持部材６１とがそれぞれキャビティ１１側へ移動するように弾性的に支持されているとともに、シール部材としてのＯリング５２が第１部材５０に設けられている。したがって、加飾フィルム３０とキャビティ１１内面との間の密閉空間を気密に保持しながら、加飾フィルム３０を移動させることができる。また、第１弾性部材５４及び第２弾性部材６４の材質、寸法、大きさ等を調整することにより、加飾フィルム３０に作用する張力、及び張力の変化に追随して移動させる加飾フィルム３０の移動量を適切に設定することができる。   (2) The clamp member 40 is elastically supported so that the first clamping member 51 of the first member 50 and the second clamping member 61 of the second member 60 move to the cavity 11 side, respectively, and seal An O-ring 52 as a member is provided on the first member 50. Therefore, the decorative film 30 can be moved while keeping the sealed space between the decorative film 30 and the inner surface of the cavity 11 airtight. In addition, by adjusting the material, size, size, and the like of the first elastic member 54 and the second elastic member 64, the decoration film 30 that moves following the tension acting on the decoration film 30 and the change in the tension. Can be appropriately set.

（３）キャビティ１１は入れ子構造として第１金型１０に形成されるとともに、コア２１は入れ子構造として第２金型２０に形成され、さらに、クランプ部材４０の第１部材５０はキャビティ１１側のキャビ入れ子１２に設けられ、第２部材６０は型締め時コア２１側のコア入れ子２２に収納可能に設けられている。したがって、製造する樹脂成形品に対応してキャビ入れ子１２及びコア入れ子２２を変更する際に、クランプ部材４０をその都度適正な仕様に変更することが容易となる。   (3) The cavity 11 is formed in the first mold 10 as a nested structure, the core 21 is formed in the second mold 20 as a nested structure, and the first member 50 of the clamp member 40 is on the cavity 11 side. The second member 60 is provided in the cavity insert 12 so as to be housed in the core insert 22 on the core 21 side during mold clamping. Therefore, when the mold insert 12 and the core insert 22 are changed corresponding to the resin molded product to be manufactured, it becomes easy to change the clamp member 40 to an appropriate specification each time.

（４）吸引通路１４は、複数の吸引通路１４Ａ，１４Ｂからなり、複数の吸引通路１４Ａ，１４Ｂのうちの少なくとも一部の吸引通路１４Ａ，１４Ｂは、キャビティ１１における複数の角部のうちの、吸引工程時の加飾フィルム３０に作用する張力が大きくなる角部に対し開口するように形成されている。したがって、クランプ部材４０の挟持部材を前述のような移動式に構成することに加えてこのような吸引通路１４，１４Ａ，１４Ｂを設けることにより、吸引工程時におけるキャビティ１１の内面角部における加飾フィルム３０の密着を良好にすることができる。これにより、加飾フィルム３０の傷、破れ、皴、局部的な薄肉化を効果的に抑制することができる。   (4) The suction passage 14 includes a plurality of suction passages 14A and 14B, and at least some of the suction passages 14A and 14B among the plurality of suction passages 14A and 14B are included in a plurality of corner portions of the cavity 11. It forms so that it may open with respect to the corner | angular part where the tension | tensile_strength which acts on the decorating film 30 at the time of a suction process becomes large. Therefore, in addition to configuring the clamping member of the clamp member 40 to be movable as described above, by providing such suction passages 14, 14A, 14B, decoration at the inner corners of the cavity 11 during the suction process is provided. The adhesion of the film 30 can be improved. Thereby, the damage | wound of the decorating film 30, a tear, a wrinkle, and local thinning can be suppressed effectively.

（５）本実施の形態に係るインモールド射出成形装置を用いて樹脂成形品を製造すると、外観の良好な加飾樹脂成形品を製造することができる。特に、高い伸び率が要求される大型樹脂成形品において良好な製品を供給することができる。   (5) When a resin molded product is manufactured using the in-mold injection molding apparatus according to the present embodiment, a decorative resin molded product having a good appearance can be manufactured. In particular, good products can be supplied in large-sized resin molded products that require a high elongation rate.

（変形例）
上記実施の形態に関する説明は、本発明に従うインモールド射出成形装置が取り得る形態の例示であり、その形態を制限することを意図していない。本発明に従うインモールド射出成形装置は、例えば以下に示される上記実施の形態の変形例、及び、相互に矛盾しない少なくとも２つの変形例が組み合わせられた形態を取り得る。上記実施の形態において以下のように変更することもできる。 (Modification)
The description related to the above embodiment is an example of the form that the in-mold injection molding apparatus according to the present invention can take, and is not intended to limit the form. The in-mold injection molding apparatus according to the present invention can take a form in which, for example, a modification of the above-described embodiment described below and at least two modifications not contradicting each other are combined. The above embodiment can be modified as follows.

・上記実施の形態においては、キャビティ１１を備える第１金型１０が固定型であって、コア２１を備える第２金型２０が可動型であったが、第１金型１０を可動型、第２金型２０を固定型とするように変更してもよい。   In the above embodiment, the first mold 10 including the cavity 11 is a fixed mold and the second mold 20 including the core 21 is a movable mold, but the first mold 10 is a movable mold, The second mold 20 may be changed to be a fixed mold.

・上記実施の形態においては、樹脂成形品は深堀形状の箱型成形品８０であったが、このような形状に限られるものではない。例えば、図１２に示すような、平面形状が四角形であって、一片のみに折曲部が形成されているような二次元的成形品９０にも適用して効果がある。   In the above-described embodiment, the resin molded product is the deeply shaped box-shaped molded product 80, but is not limited to such a shape. For example, as shown in FIG. 12, the present invention is effective when applied to a two-dimensional molded product 90 in which the planar shape is a quadrangle and a bent portion is formed only on one piece.

・また、樹脂成形品において、加飾フィルム３０の張力が大きくなる位置が全周でなく一部の周辺に存在する場合、例えば、前出の図１２のような二次元的成形品９０を制作する場合には、本実施の形態のような移動式の挟持部材を備えたクランプ部材４０を周囲四辺や角部の全部に配置する必要がない。したがって、この場合は、折曲部のある一片のみに本実施の形態に係るクランプ部材４０を配置すればよい。   In addition, in the resin molded product, when the position where the tension of the decorative film 30 is increased exists not in the entire circumference but in a part of the periphery, for example, a two-dimensional molded product 90 as shown in FIG. In this case, it is not necessary to arrange the clamp member 40 having the movable holding member as in the present embodiment on all four sides and corners. Therefore, in this case, the clamp member 40 according to the present embodiment may be disposed only on one piece having the bent portion.

・本実施の形態においては、図１０に記載されているように、コア２１の外周斜面部とキャビティ１１の内面における外周斜面部とが斜面の途中で加飾フィルム３０を挟んで突き合わされる金型となっているが、第１金型１０と第２金型２０との突合せ面をキャビティ１１及びコア２１の外周側とする従来一般的な金型としてもよい。   In the present embodiment, as shown in FIG. 10, the outer peripheral slope portion of the core 21 and the outer peripheral slope portion of the inner surface of the cavity 11 are abutted with the decorative film 30 sandwiched between the slopes. Although it is a mold, a conventional general mold may be used in which the butt surface between the first mold 10 and the second mold 20 is the outer peripheral side of the cavity 11 and the core 21.

・吸引通路１４は、キャビ入れ子１２内において複数の吸引通路１４Ａ，１４Ｂに分岐され、キャビティ１１内面の角部付近の底面に開口するように形成されているが、前記実施の形態のように１段階的に分岐される形態に限定されるものではない。例えば、１次的な吸引通路１４Ａ，１４Ｂに対しさらに２次的な吸引通路を設けるような形態とすることもできる。また、キャビ入れ子１２内で分岐せずにその外側から直接的に目的位置に吸引通路を開口するようにすることもできる。   The suction passage 14 is branched into a plurality of suction passages 14A and 14B in the cabinet insert 12, and is formed so as to open at the bottom surface near the corner of the inner surface of the cavity 11, but as in the above-described embodiment, It is not limited to the form branched in steps. For example, a secondary suction passage may be provided for the primary suction passages 14A and 14B. It is also possible to directly open the suction passage from the outside to the target position without branching in the cabinet insert 12.

１０…第１金型
１１…キャビティ
１２…キャビ入れ子
１３…第１分割面
１４…吸引通路
１４Ａ…吸引通路
１４Ｂ…吸引通路
２０…第２金型
２１…コア
２２…コア入れ子
３０…加飾フィルム
４０…クランプ部材
５０…第１部材
５１…第１挟持部材
５２…（シール部材としての）Ｏリング
６０…第２部材
６１…第２挟持部材 DESCRIPTION OF SYMBOLS 10 ... 1st metal mold | die 11 ... Cavity 12 ... Cavity insert 13 ... 1st division surface 14 ... Suction passage 14A ... Suction passage 14B ... Suction passage 20 ... 2nd metal mold 21 ... Core 22 ... Core insert 30 ... Decorating film 40 ... Clamp member 50 ... First member 51 ... First clamping member 52 ... O-ring 60 (as a sealing member) ... Second member 61 ... Second clamping member

この課題を解決するインモールド射出成形金型装置は、製品形状部の加飾面側の形状を形成するキャビティを有する第１金型と、前記第１金型に対応して製品形状部の非加飾面側の形状を形成するコアを有する第２金型と、型開き時に前記キャビティの外側において、加飾フィルムの前記第１金型側の面をシールしながら前記加飾フィルムを両面から挟持して拘束するとともに、前記第１金型における前記第２金型との第１分割面に対し前記加飾フィルムを押し付けるクランプ部材と、前記クランプ部材により挟持された前記加飾フィルムと前記キャビティの内面との間の密閉空間の空気を吸引するように前記第１金型に形成された吸引通路とを有し、前記クランプ部材は、前記加飾フィルムの前記第１金型側の面をシールしながら前記加飾フィルムを両面から挟持するための挟持部材を有し、前記挟持部材は、前記密閉空間の空気を吸引する吸引時に前記加飾フィルムに作用する張力により、前記加飾フィルムを挟持拘束した状態のまま前記キャビティ側へ移動可能に弾性的に支持されている。 An in-mold injection mold apparatus that solves this problem includes a first mold having a cavity that forms a shape on the decorative surface side of a product shape portion, and a non-product shape portion corresponding to the first mold. A second mold having a core forming a shape on the decorative surface side, and the decorative film from both sides while sealing the surface on the first mold side of the decorative film outside the cavity when the mold is opened with clamping to restrain the clamping member relative to the first divided surface and the second mold in the first mold presses the decorative film, the clamp member and the decorative fill beam which is held between the A suction passage formed in the first mold so as to suck air in an enclosed space between the inner surface of the cavity and the clamp member is a surface on the first mold side of the decorative film the decorative while sealing the A sandwiching member for sandwiching the film from both sides, and the sandwiching member remains in a state in which the decorating film is sandwiched and restrained by a tension acting on the decorating film during suction for sucking air in the sealed space It is elastically supported so as to be movable toward the cavity.

また、前記クランプ部材は、前記加飾フィルムの前記第１金型側の面に当接するように、前記第１金型における前記キャビティの外側に設けられる第１部材と、前記加飾フィルムの前記第２金型側の面に当接可能に、前記第２金型側の前記コアの外側に設けられる第２部材とからなり、前記挟持部材は、前記第１部材に設けられた第１挟持部材と前記第２部材に設けられた第２挟持部材とで前記加飾フィルムを両面から挟持するように構成され、前記第１挟持部材および前記第２挟持部材は、それぞれ、前記密閉空間の吸引時に前記キャビティ側へ移動可能に弾性的に支持されるとともに、前記第１挟持部材には前記加飾フィルムの前記第１金型側の面に当接するシール部材が設けられているものとしてもよい。 Further, the clamp member, the so as to contact the surface of the first mold side of the decorative film, a first member provided on the outside of the cavity in the first mold, the said decorative film A second member provided outside the core on the second mold side so as to be capable of contacting the surface on the second mold side, wherein the clamping member is a first clamping provided on the first member The decorative film is configured to be sandwiched from both sides by a member and a second sandwiching member provided on the second member, and the first sandwiching member and the second sandwiching member respectively suck the sealed space. Sometimes, the first holding member may be provided with a seal member that abuts against the surface of the decorative film on the first mold side while being elastically supported so as to be movable toward the cavity. .

Claims (6)

製品形状部の加飾面側の形状を形成するキャビティ１１を有する第１金型１０と、
前記第１金型１０に対応して製品形状部の非加飾面側の形状を形成するコア２１を有する第２金型２０と、
型開き時に前記キャビティ１１の外側において、加飾フィルム３０の加飾面側をシールしながら前記加飾フィルム３０を両面から挟持して拘束するとともに、前記第１金型１０における前記第２金型２０との第１分割面１３に対し前記加飾フィルム３０を押し付けるクランプ部材４０と、
前記クランプ部材４０により挟持された前記加飾フィルム３０の加飾面と前記キャビティ１１の内面との間の密閉空間の空気を吸引するように前記第１金型１０に形成された吸引通路１４とを有し、
前記クランプ部材４０は、前記加飾フィルム３０を両面から挟持するための挟持部材を有し、
前記挟持部材は、前記密閉空間の空気を吸引する吸引時に前記加飾フィルム３０に作用する張力により、前記加飾フィルム３０を挟持拘束した状態のまま前記キャビティ１１側へ移動するように構成されている
インモールド射出成形金型装置。 A first mold 10 having a cavity 11 for forming a shape on the decorative surface side of the product shape portion;
A second mold 20 having a core 21 that forms a shape on the non-decorative surface side of the product shape portion corresponding to the first mold 10;
While opening the mold, the decorative film 30 is sandwiched and restrained from both sides while sealing the decorative surface side of the decorative film 30, and the second mold in the first mold 10 is sealed. A clamp member 40 that presses the decorative film 30 against the first dividing surface 13 with 20;
A suction passage 14 formed in the first mold 10 so as to suck air in a sealed space between the decorative surface of the decorative film 30 sandwiched by the clamp member 40 and the inner surface of the cavity 11; Have
The clamp member 40 has a clamping member for clamping the decorative film 30 from both sides,
The holding member is configured to move toward the cavity 11 while holding the decorative film 30 by a tension acting on the decorative film 30 during suction for sucking air in the sealed space. In-mold injection mold equipment. 前記クランプ部材４０は、前記加飾フィルム３０の加飾面側に当接するように、前記第１金型１０における前記キャビティ１１の外側に設けられる第１部材５０と、前記加飾フィルム３０の非加飾面側に当接可能に、前記第２金型２０側の前記コア２１の外側に設けられる第２部材６０とからなり、
前記挟持部材は、前記第１部材５０に設けられた第１挟持部材５１と前記第２部材６０に設けられた第２挟持部材６１とで前記加飾フィルム３０を両面から挟持するように構成され、前記第１挟持部材５１および前記第２挟持部材６１は、それぞれ前記密閉空間の吸引時に前記キャビティ１１側へ移動可能に弾性的に支持されるとともに、前記第１挟持部材５１には前記加飾フィルム３０の加飾面側に当接するシール部材が設けられている
請求項１に記載のインモールド射出成形金型装置。 The clamp member 40 has a first member 50 provided on the outside of the cavity 11 in the first mold 10 so as to abut on the decorative surface side of the decorative film 30, and the non-decorative of the decorative film 30. A second member 60 provided outside the core 21 on the second mold 20 side so as to be able to come into contact with the decorative surface side;
The sandwiching member is configured to sandwich the decorative film 30 from both sides by a first sandwiching member 51 provided on the first member 50 and a second sandwiching member 61 provided on the second member 60. The first sandwiching member 51 and the second sandwiching member 61 are elastically supported so as to be movable toward the cavity 11 when the sealed space is sucked, and the first sandwiching member 51 has the decoration. The in-mold injection mold apparatus according to claim 1, wherein a seal member that contacts the decorative surface side of the film 30 is provided. 前記キャビティ１１は入れ子構造として前記第１金型１０に形成されるとともに、前記コア２１は入れ子構造として前記第２金型２０に形成され、
前記クランプ部材４０の前記第１部材５０は、前記キャビティ１１側の入れ子であるキャビ入れ子１２に収納され、前記クランプ部材４０の前記第２部材６０は、型締め時前記コア２１側の入れ子であるコア入れ子２２に収納可能に設けられている
請求項２に記載のインモールド射出成形金型装置。 The cavity 11 is formed in the first mold 10 as a nested structure, and the core 21 is formed in the second mold 20 as a nested structure,
The first member 50 of the clamp member 40 is housed in a cavity insert 12 that is a nest on the cavity 11 side, and the second member 60 of the clamp member 40 is a nest on the core 21 side during mold clamping. The in-mold injection mold apparatus according to claim 2, wherein the in-mold injection mold apparatus is provided so as to be housed in the core insert 22. 前記挟持部材がキャビティ１１側に移動するように弾性的に支持されているクランプ部材４０は、前記密閉空間の吸引時に前記加飾フィルム３０に作用する張力が大きくなる部分を対象として取り付けられている
請求項１〜請求項３の何れか１項に記載のインモールド射出成形金型装置。 The clamp member 40 elastically supported so that the clamping member moves toward the cavity 11 is attached to a portion where a tension acting on the decorative film 30 is increased when the sealed space is sucked. The in-mold injection mold apparatus according to any one of claims 1 to 3. 前記吸引通路１４は、複数の吸引通路１４Ａ，１４Ｂからなり、
前記複数の吸引通路１４Ａ，１４Ｂのうちの少なくとも一部の吸引通路は、前記キャビティ１１における複数の角部のうちの、前記密閉空間の空気吸引時に前記加飾フィルム３０に作用する張力が大きくなる角部に対し開口するように形成されている
請求項４記載のインモールド射出成形金型装置。 The suction passage 14 includes a plurality of suction passages 14A and 14B.
At least a part of the plurality of suction passages 14A and 14B has a large tension acting on the decorative film 30 during air suction in the sealed space among the plurality of corner portions of the cavity 11. The in-mold injection mold apparatus according to claim 4, wherein the in-mold injection mold apparatus is formed so as to open to a corner portion. 請求項１〜５の何れか１項に記載されたインモールド射出成形装置を用いて樹脂成形品を製作する樹脂成形品製造方法。   The resin molded product manufacturing method which manufactures a resin molded product using the in-mold injection molding apparatus as described in any one of Claims 1-5.
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JPH1134104A (en) * 1997-07-15 1999-02-09 Nissha Printing Co Ltd Clamp device and mold for in-mold decorating
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JPH0760791A (en) * 1993-08-31 1995-03-07 Nissan Motor Co Ltd In-mold transfer molding device
JPH1134104A (en) * 1997-07-15 1999-02-09 Nissha Printing Co Ltd Clamp device and mold for in-mold decorating
JP2000254939A (en) * 1999-03-08 2000-09-19 Dainippon Printing Co Ltd Resin molded article and apparatus for producing the same
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