JP4930962B2

JP4930962B2 - Coated molded body manufacturing equipment

Info

Publication number: JP4930962B2
Application number: JP2005093077A
Authority: JP
Inventors: 豊平田; 啓二東; 功一増川
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2005-03-28
Filing date: 2005-03-28
Publication date: 2012-05-16
Anticipated expiration: 2025-03-28
Also published as: JP2006272665A

Description

本発明は、圧縮成形体に被覆層を形成するようにした被覆成形体の製造装置に関する。 The present invention relates to an apparatus for manufacturing a coated molded body in which a coating layer is formed on a compression molded body.

従来から、上下の成形型がなす密閉空間内で成形した樹脂成形体に対し、その成形体を成形型の内部に保持した状態で、成形体の表面に被覆層（コーティング層）を形成して被覆成形体を製造する、いわゆるインモールドコーティング（ＩＭＣ）と呼ばれる製造技術が知られている。このような被覆成形体の被覆層は、下地の成型体表面の微小な凹凸や空洞を覆って表面改質や美化を行うものであり、その厚さが所定の効果を得られる範囲で薄いほど材料を節約できる。そこで、上下の成形型の相対位置を一定値に保持して被覆層の厚さが均一になるようにインモールドコーティングを行うため、成形型の４隅における上下の成形型間の圧力を検出する力検出部と、力検出部からの圧力信号をもとに上下の成形型間のレベリング調整を行う調整機構と、を備えた装置が知られている（例えば、特許文献１参照）。
特開平８−３３２６５５号公報 Conventionally, with respect to a resin molded body molded in a sealed space formed by upper and lower molds, a covering layer (coating layer) is formed on the surface of the molded body while the molded body is held inside the mold. A so-called in-mold coating (IMC) manufacturing technique for manufacturing a coated molded body is known. The coating layer of such a covering molded body is for surface modification or beautification by covering minute irregularities and cavities on the surface of the underlying molded body, and the thinner the thickness is within a range where a predetermined effect can be obtained. You can save material. Therefore, in order to perform in-mold coating so that the thickness of the coating layer is uniform while maintaining the relative position of the upper and lower molds at a constant value, the pressure between the upper and lower molds at the four corners of the mold is detected. An apparatus including a force detection unit and an adjustment mechanism that performs leveling adjustment between upper and lower molds based on a pressure signal from the force detection unit is known (see, for example, Patent Document 1).
JP-A-8-332655

しかしながら、上述した特許文献１に示されるようなインモールドコーティング用の装置においては、圧力に基づいてレベリング調整を行うので、被覆層の厚さを直接管理することができない。 However, in the apparatus for in-mold coating as shown in Patent Document 1 described above, since the leveling adjustment is performed based on the pressure, the thickness of the coating layer cannot be directly managed.

本発明は、上記課題を解消するものであって、上型と下型の相対位置の変動の修正と、その修正による所定膜厚の被覆層の実現を可能とする被覆成形体の製造装置を提供することを目的とする。 The present invention solves the above-described problem, and provides an apparatus for manufacturing a coated molded body that can correct a change in the relative position of an upper mold and a lower mold and realize a coating layer having a predetermined film thickness by the correction. The purpose is to provide.

上記課題を達成するために、請求項１の発明は、成形体の表面を成形する凸状の上型と、裏面を成形する凹状の下型との間に空間を設け、この空間内で成形樹脂を圧縮成形し、その後、下型面又は上型面と前記圧縮成形により形成された成形体との間に流動性被覆材料を注入して加熱硬化させ、前記成形体の表面に被覆層を形成するようにした被覆成形体の製造装置において、前記上型と下型との相対位置を検出する位置検出部と、成形樹脂を圧縮成形する際、又は圧縮成形後に流動性被覆材料を注入し成形体の表面に被覆層を形成する際に前記位置検出部により検出された上型と下型との相対位置が所定位置からずれているときに、この位置ずれを修正するように上型、又は下型を駆動する型位置制御機構と、を備え、前記型位置制御機構が前記上型又は下型を支持する金型である支持ベースの内部に設けられているものである。 In order to achieve the above object, the invention of claim 1 provides a space between a convex upper mold for molding the surface of the molded body and a concave lower mold for molding the back surface, and molding is performed in this space. The resin is compression-molded, and then a fluid coating material is injected between the lower mold surface or the upper mold surface and the molded body formed by the compression molding and heat-cured, and a coating layer is formed on the surface of the molded body. In the apparatus for manufacturing a coated molded body to be formed, a position detecting unit for detecting a relative position between the upper mold and the lower mold, and a fluid coating material is injected when the molding resin is compression molded or after compression molding. When the relative position between the upper mold and the lower mold detected by the position detection unit when the coating layer is formed on the surface of the molded body is deviated from a predetermined position, the upper mold is corrected so as to correct this positional deviation. Or a mold position control mechanism for driving the lower mold, and the mold position control mechanism In which is provided inside the support base is a mold for supporting the upper mold or the lower mold.

請求項２の発明は、請求項１に記載の被覆成形体の製造装置において、前記支持ベースは、前記下型を収納支持する凹所を有し、この凹所の底面に進退自在に突出して先端が下型を支持する支持部を設けて前記型位置制御機構が備えられているものである。 According to a second aspect of the present invention, in the manufacturing apparatus for a coated molded body according to the first aspect, the support base has a recess for storing and supporting the lower mold, and protrudes forward and backward on the bottom surface of the recess. The mold position control mechanism is provided with a support portion whose tip supports the lower mold.

請求項３の発明は、請求項２に記載の被覆成形体の製造装置において、下型を支持する支持部が複数あり、そのうちの１つの支持部の進退位置が固定されているものである。 According to a third aspect of the present invention, in the coated molded body manufacturing apparatus according to the second aspect, there are a plurality of support portions for supporting the lower mold, and the advance / retreat position of one of the support portions is fixed.

請求項４の発明は、請求項１又は請求項２に記載の被覆成形体の製造装置において、前記位置検出部は、前記下型又は上型のどちらか一方の型に設けられ、他方の型との上下方向距離を検出する縦位置検出部と、水平方向距離を検出する横位置検出部とからなるものである。 According to a fourth aspect of the present invention, in the manufacturing apparatus for a coated molded body according to the first or second aspect, the position detection unit is provided in one of the lower mold and the upper mold, and the other mold. The vertical position detection unit detects the vertical distance, and the horizontal position detection unit detects the horizontal distance.

請求項５の発明は、請求項４に記載の被覆成形体の製造装置において、前記縦位置検出部は、前記下型又は上型のどちらか一方の型の肩部に設けられ、対向する他方の型との縦方向距離を検出し、前記横位置検出部は、前記下型又は上型のどちらか一方の型の外壁に設けられて他方の型の外壁面との横方向距離を検出するものである。 According to a fifth aspect of the present invention, in the coated molded body manufacturing apparatus according to the fourth aspect, the vertical position detecting portion is provided on a shoulder portion of one of the lower die and the upper die, and the other facing the other. The horizontal position detection unit detects a horizontal distance from the outer wall of the other mold that is provided on the outer wall of either the lower mold or the upper mold. Is.

請求項６の発明は、請求項１乃至請求項５のいずれかに記載の被覆成形体の製造装置において、前記複数の位置検出部からの信号を受けて前記支持部の進退を制御する制御部を備え、この制御部は、前記下型又は上型の上下駆動を行うプレス成形機のストローク制御信号を受け取り、これを制御用の基準値として前記支持部の動作量を算出し、前記支持部の進退を駆動するものである。 A sixth aspect of the present invention provides the coated molded body manufacturing apparatus according to any one of the first to fifth aspects, wherein the controller is configured to receive the signals from the plurality of position detectors and to control the advance and retreat of the support portion. The control unit receives a stroke control signal of a press molding machine that performs vertical driving of the lower mold or the upper mold, calculates an operation amount of the support unit using this as a reference value for control, and It drives the advance and retreat.

請求項１の発明によれば、上型と下型の相対位置のずれを位置検出部により検出し、支持ベース内部に設けた型位置制御機構により上型、又は下型を駆動するので、上型と下型との相対位置の変動の修正ができ、これにより所定膜厚の被覆層を実現できる。 According to the first aspect of the present invention, the position detection unit detects the relative position shift between the upper mold and the lower mold, and the upper mold or the lower mold is driven by the mold position control mechanism provided inside the support base. Variations in the relative position between the mold and the lower mold can be corrected, whereby a coating layer having a predetermined thickness can be realized.

請求項２の発明によれば、位置制御機構の支持部により下型の上下方向の位置を調整できるので、上型に対する相対距離及び傾きを修正でき、被覆材料の膜厚を所定の寸法に形成することができる。 According to the invention of claim 2, since the vertical position of the lower mold can be adjusted by the support portion of the position control mechanism, the relative distance and inclination with respect to the upper mold can be corrected, and the film thickness of the coating material is formed to a predetermined dimension. can do.

請求項３の発明によれば、制御変数を減らすことができ、効率的に下型の位置制御ができる。 According to invention of Claim 3, a control variable can be reduced and a lower mold | type position control can be performed efficiently.

請求項４の発明によれば、上下方向と水平方向の両方向について位置検出できるので、これらの検出結果に基づいて、成形体における立上り部の被覆膜厚とともに平面部の被覆膜厚を制御できるようになる。 According to the invention of claim 4, since the position can be detected in both the vertical direction and the horizontal direction, the coating film thickness of the flat portion is controlled together with the coating film thickness of the rising portion in the molded body based on these detection results. become able to.

請求項５の発明によれば、各位置検出部が上型や下型の外部に設けられているので、位置検出部の調整や目視検査などの保守、位置検出部の設置や信号取り出しなどが容易である。 According to the invention of claim 5, since each position detection unit is provided outside the upper mold and the lower mold, adjustment of the position detection unit and maintenance such as visual inspection, installation of the position detection unit and signal extraction are performed. Easy.

請求項６の発明によれば、プレス成形機のダイプレートを駆動する制御量を型位置制御機構を駆動する制御量判定の規準値として用いることができるので、型位置制御機構を効率的に制御できる。例えば、型位置制御機構を制御するための計算が発散するようなエラーを発生しにくい。 According to the invention of claim 6, since the control amount for driving the die plate of the press molding machine can be used as a reference value for determining the control amount for driving the die position control mechanism, the die position control mechanism is efficiently controlled. it can. For example, it is difficult to generate an error that diverges calculation for controlling the mold position control mechanism.

以下、本発明の一実施形態に係る被覆成形体の製造装置について、図面を参照して説明する。図１は、本発明の被覆成形体の製造装置１を示す。この製造装置１は、上型１１、下型１２、支持ベース１３を備えて成形体と成形体への被覆を行う装置である。また、製造装置１は、上ダイプレートＤＰ１、上プレスベースＰＢ１、油圧ラムＨＲ、ガイドポストＧＰ、下ダイプレートＤＰ２、下プレスベースＰＢ２を備えたプレス成形機１０ａにより駆動される。上型１１は、上ダイプレートＤＰ１に保持されて、油圧ラムＨＲの駆動力によって、ガイドポストＧＰに沿って上下に移動する可動型である。また、この上型１１の上部側方には、成形体の表面に被覆層を形成するための流動性被覆材料を注入する樹脂注入口２３ａが設けられており、後述するように、上型１１の下型１２の凹部に対面した部位に設けられた樹脂出口２３ｂから成形体の表面に流動性被覆材料を供給するようになっている。 Hereinafter, the manufacturing apparatus of the covering molded object which concerns on one Embodiment of this invention is demonstrated with reference to drawings. FIG. 1 shows an apparatus 1 for producing a coated molded body of the present invention. The manufacturing apparatus 1 includes an upper mold 11, a lower mold 12, and a support base 13, and is an apparatus that performs coating on a molded body and the molded body. The manufacturing apparatus 1 is driven by a press molding machine 10a including an upper die plate DP1, an upper press base PB1, a hydraulic ram HR, a guide post GP, a lower die plate DP2, and a lower press base PB2. The upper mold 11 is a movable mold that is held by the upper die plate DP1 and moves up and down along the guide post GP by the driving force of the hydraulic ram HR. Further, a resin injection port 23a for injecting a fluid coating material for forming a coating layer on the surface of the molded body is provided on the upper side of the upper mold 11, and as will be described later, the upper mold 11 A fluid coating material is supplied to the surface of the molded body from a resin outlet 23b provided at a portion facing the concave portion of the lower mold 12.

下型１２は、下ダイプレートＤＰ２に固定された金型である支持ベース１３の内部に収納されている。支持ベース１３は、下型１２を収納支持する凹所を有しており、この凹所の底面には、上下方向に進退自在に突出して先端が下型１２を支持する支持部４１と、支持部４１の進退動作を駆動する駆動部４０と、を備えた型位置制御機構４が設けられている。従って、下型１２は、支持部４１の進退によって所定の可動範囲内で位置調整のために上下動する半固定型となっている。 The lower mold 12 is housed in a support base 13 that is a mold fixed to the lower die plate DP2. The support base 13 has a recess for storing and supporting the lower mold 12, and a support portion 41 for protruding forward and backward in the vertical direction and having a tip supporting the lower mold 12 on the bottom surface of the recess, and a support A mold position control mechanism 4 including a drive unit 40 that drives the advancing / retreating operation of the unit 41 is provided. Therefore, the lower mold 12 is a semi-fixed mold that moves up and down for position adjustment within a predetermined movable range by the advancement and retreat of the support portion 41.

また、上型１１の肩部には、上型１１と下型１２との上下方向の相対距離を検出する縦位置検出部３が備えられている。縦位置検出部３は、下型１２に設けられた凸部３１の上面基準面の上下位置を検出する。このような縦位置検出部３と凸部３１とは上型１１と下型１２の周囲に複数設けられて、上型１１と下型１２の相対距離とともに、本来互いに平行であるように上型１１と下型１２とに定義された互いの基準面が傾いている場合、基準面間の傾きを検出することができる。 In addition, a vertical position detection unit 3 that detects a relative distance in the vertical direction between the upper mold 11 and the lower mold 12 is provided on the shoulder of the upper mold 11. The vertical position detection unit 3 detects the vertical position of the upper surface reference surface of the convex portion 31 provided in the lower mold 12. A plurality of such vertical position detection units 3 and convex portions 31 are provided around the upper mold 11 and the lower mold 12, and the upper mold so as to be essentially parallel to each other along with the relative distance between the upper mold 11 and the lower mold 12. When the reference planes defined by 11 and the lower mold 12 are tilted, the tilt between the reference planes can be detected.

次に、図１とともに図２（ａ）〜（ｄ）を参照して、被覆成形体の製造装置１の動作を説明する。図１及び図２（ａ）に示すように、成形体の表面を成形する凸状の上型１１と、裏面を成形する凹状の下型１２との間に空間を設け、この空間内に成形樹脂２１を載置し、図２（ｂ）に示すように、上型１２を下降させて成形樹脂２１を圧縮成形する。その後、図２（ｃ）に示すように、上型１１の下面と圧縮成形により形成された成形体２２の上面との間に、樹脂注入口２３ａから流動性被覆材料２３を注入し、流動性被覆材料２３を加熱硬化させて成形体２２の表面に被覆層を形成する。そして、図２（ｄ）に示すように、上型１１と下型１２を型開きすると、成形体２２の上面に被覆層２４が形成された被覆成形体２が得られる。 Next, with reference to FIG. 1 and FIGS. 2 (a) to 2 (d), the operation of the coated molded body manufacturing apparatus 1 will be described. As shown in FIGS. 1 and 2A, a space is provided between a convex upper mold 11 for molding the surface of the molded body and a concave lower mold 12 for molding the back surface, and molding is performed in this space. The resin 21 is placed, and as shown in FIG. 2B, the upper mold 12 is lowered and the molding resin 21 is compression-molded. Thereafter, as shown in FIG. 2 (c), the fluid coating material 23 is injected from the resin injection port 23a between the lower surface of the upper mold 11 and the upper surface of the molded body 22 formed by compression molding. The coating material 23 is cured by heating to form a coating layer on the surface of the molded body 22. 2D, when the upper mold 11 and the lower mold 12 are opened, the coated molded body 2 in which the coating layer 24 is formed on the upper surface of the molded body 22 is obtained.

次に、図３（ａ）（ｂ）を参照して、上述の縦位置検出部３１と型位置制御機構４の動作を説明する。上型１１と下型１２は、成形樹脂を圧縮成形する段階、又は圧縮成型後に、上型１２の下面と成形体との間に流動性被覆材料を注入する段階において、成形樹脂又は流動性被覆材料の内部圧力によって、図３（ａ）に示すように、相対位置が所定位置から変動して互いに傾いた状態になることがある。このような傾きは、縦位置検出部３１によって検出することができる。そこで、上型１１に対する下型１２の傾きが検出された場合、図３（ｂ）に示すように、下型１２の下がっている部分を持ち上げるように、型位置制御機構４を動作させ、支持部４１を駆動部４０によって上昇させる。これにより下型１２の傾きを修正し、製造される成形体の肉厚や被覆材料の膜厚を所定の寸法に保つことができる。駆動部４０は、例えば、油圧によって支持部４１を上昇させるものであり、配管４２からの油圧によって上述の傾き調整がなされる。 Next, the operations of the vertical position detector 31 and the mold position control mechanism 4 will be described with reference to FIGS. The upper mold 11 and the lower mold 12 are formed by molding resin or fluid coating at the stage of compression molding the molding resin, or at the stage of injecting a fluid coating material between the lower surface of the upper mold 12 and the molded body after compression molding. Depending on the internal pressure of the material, as shown in FIG. 3A, the relative position may change from a predetermined position and be inclined with respect to each other. Such a tilt can be detected by the vertical position detector 31. Therefore, when the inclination of the lower mold 12 with respect to the upper mold 11 is detected, as shown in FIG. 3B, the mold position control mechanism 4 is operated so as to lift the lower portion of the lower mold 12 and supported. The part 41 is raised by the drive part 40. As a result, the inclination of the lower mold 12 can be corrected, and the thickness of the molded article to be produced and the film thickness of the coating material can be maintained at predetermined dimensions. The drive unit 40 raises the support unit 41 by, for example, hydraulic pressure, and the inclination is adjusted by the hydraulic pressure from the pipe 42.

次に、図４、図５（ａ）（ｂ）を参照して、支持部４１を駆動部４０で動作させる場合の進退制御の方法を説明する。図４に示すように、本製造装置１は、縦位置検出部３と、縦位置検出部３からの位置検出信号を受けて型位置制御機構４を制御する制御部７を備えており、制御部７は、プレス成形機１０ａから上ダイプレートＤＰ１を駆動するためのストローク制御信号を受け取り、これを制御用の基準値として型位置制御機構４の動作量を算出し、型位置制御機構４の駆動部４０を駆動して支持部４１を上下方向に進退させて下型１２を上下動させる。なお、縦位置検出部３は、傾き検出に必要な個数、例えば３個以上が備えられ、型位置制御機構４は、傾き修正機能と下型１２を支えて保持するのに十分な機能の個数が備えられている。このようにして型位置制御機構４を制御することにより、プレス成形機１０ａの上ダイプレートＤＰ１の駆動制御量を型位置制御機構４の駆動部４０を制御する制御量判定の規準値として用いることができるので、型位置制御機構４を効率的に制御できる。例えば、型位置制御機構４を制御するための計算が発散するようなエラーを発生しにくい。 Next, with reference to FIG. 4, FIG. 5 (a) (b), the method of advancing / retreating control when the support part 41 is operated by the drive part 40 will be described. As shown in FIG. 4, the manufacturing apparatus 1 includes a vertical position detection unit 3 and a control unit 7 that receives the position detection signal from the vertical position detection unit 3 and controls the mold position control mechanism 4. The unit 7 receives a stroke control signal for driving the upper die plate DP1 from the press molding machine 10a, calculates an operation amount of the mold position control mechanism 4 using this as a reference value for control, and The drive part 40 is driven and the support part 41 is moved forward and backward to move the lower mold 12 up and down. The vertical position detection unit 3 is provided with the number necessary for tilt detection, for example, three or more, and the mold position control mechanism 4 has a sufficient number of functions to support and hold the tilt correction function and the lower mold 12. Is provided. By controlling the mold position control mechanism 4 in this manner, the drive control amount of the upper die plate DP1 of the press molding machine 10a is used as a reference value for determining the control amount for controlling the drive unit 40 of the mold position control mechanism 4. Therefore, the mold position control mechanism 4 can be efficiently controlled. For example, it is difficult to generate an error that diverges the calculation for controlling the mold position control mechanism 4.

次に、図５（ａ）（ｂ）を参照して、上型１１と下型１２の相対位置の検出値に基づく型位置制御機構４の制御を説明する。プレス成形機１０ａの上ダイプレートＤＰ１を駆動した距離をプレス成形機制御量ΔＺと呼ぶことにする。また、図５（ａ）（ｂ）に示すように、上型１１と下型１２間の相対距離の基準面をＳ０（上下方向の座標軸原点）とし、この基準面Ｓ０の４隅Ａ，Ｂ，Ｃ，Ｄに対応して、縦位置検出部３と型位置制御機構４が設けられている、すなわち、縦位置検出部３による検出量と型位置制御機構４による上述の動作量が基準面Ｓ０の４隅Ａ，Ｂ，Ｃ，Ｄの位置における量に換算されるものとする。なお、縦位置検出部３の検出点と型位置制御機構４の動作点が上下方向の軸上に設定できるとは限らないので、検出量と動作量に対する上述の換算が必要である。 Next, the control of the mold position control mechanism 4 based on the detected value of the relative position between the upper mold 11 and the lower mold 12 will be described with reference to FIGS. The distance at which the upper die plate DP1 of the press molding machine 10a is driven will be referred to as a press molding machine control amount ΔZ. Further, as shown in FIGS. 5A and 5B, the reference surface of the relative distance between the upper die 11 and the lower die 12 is S0 (vertical axis origin), and the four corners A and B of the reference surface S0 are shown. , C, and D, the vertical position detection unit 3 and the mold position control mechanism 4 are provided. That is, the detection amount by the vertical position detection unit 3 and the operation amount by the mold position control mechanism 4 are the reference plane. It is assumed that the amount is converted into an amount at the positions of the four corners A, B, C, and D of S0. Since the detection point of the vertical position detection unit 3 and the operation point of the mold position control mechanism 4 cannot always be set on the vertical axis, the above-described conversion for the detection amount and the operation amount is necessary.

上述の設定のもとで、４隅Ａ，Ｂ，Ｃ，Ｄにおける相対距離の変動量（４隅に対応してα，β，γ，δとする）が４つの縦位置検出部３による検出量から求められ、その検出された変動量α，β，γ，δが４つの型位置制御機構４の動作量とされる。そして、４つの型位置制御機構４の動作量α，β，γ，δによって上型１１と下型１２間の相対距離の変動が補正される。 Under the above settings, the relative distance fluctuation amounts at the four corners A, B, C, and D (α, β, γ, and δ corresponding to the four corners) are detected by the four vertical position detectors 3. The detected variation amounts α, β, γ, and δ are determined as the operation amounts of the four mold position control mechanisms 4. And the fluctuation | variation of the relative distance between the upper mold | type 11 and the lower mold | type 12 is correct | amended by operation amount (alpha), (beta), (gamma), (delta) of the four type | mold position control mechanisms 4. FIG.

上型１１を上位置から下位置までプレス成形機制御量ΔＺの距離を下降させたとき、上型１１の基準面Ｓ１が相対距離の基準面Ｓ０と平行に移動して、図５（ａ）に示すように、基準面Ｓ２となった場合、４隅Ａ，Ｂ，Ｃ，Ｄにおける上型１１の下降量（ａ０−ａ１、等）がプレス成形機１０ａの移動量（プレス成形機制御量ΔＺ）と同じ値となる。従って、基準面Ｓ０の４隅Ａ，Ｂ，Ｃ，Ｄにおける上型１１と下型１２間の相対距離の検出量ａ１，ｂ１，ｃ１，ｄ１とその初期値ａ０，ｂ０，ｃ０，ｄ０とから求めた相対距離の変動量、従って、型位置制御機構４の動作量α，β，γ，δはゼロとなる：α＝β＝γ＝δ＝０。 When the distance of the press molding machine control amount ΔZ is lowered from the upper position to the lower position, the reference surface S1 of the upper mold 11 moves in parallel with the reference surface S0 of the relative distance, and FIG. As shown in FIG. 4, when the reference surface S2 is reached, the lowering amount (a0-a1, etc.) of the upper mold 11 at the four corners A, B, C, D is the movement amount of the press molding machine 10a (the press molding machine control amount). The same value as ΔZ). Therefore, from the detected amounts a1, b1, c1, d1 of the relative distance between the upper mold 11 and the lower mold 12 at the four corners A, B, C, D of the reference surface S0 and their initial values a0, b0, c0, d0. The obtained fluctuation amount of the relative distance, and hence the movement amounts α, β, γ, and δ of the mold position control mechanism 4 are zero: α = β = γ = δ = 0.

また、上型１１を上位置から下位置までプレス成形機制御量ΔＺの距離下降させたとき、上型１１の基準面Ｓ１が下型１２の基準面Ｓ０に対して偏って移動して、図５（ｂ）に示すように、基準面Ｓ２となった場合、相対距離の変動量、従って、型位置制御機構４の動作量α，β，γ，δは次式で求められる：α＝（ａ０−ａ１）−ΔＺ、β＝（ｂ０−ｂ１）−ΔＺ、γ＝（ｃ０−ｃ１）−ΔＺ、δ＝（ｄ０−ｄ１）−ΔＺ。 Further, when the upper mold 11 is lowered from the upper position to the lower position by a press molding machine control amount ΔZ, the reference surface S1 of the upper mold 11 moves with a deviation from the reference surface S0 of the lower mold 12, and FIG. As shown in FIG. 5 (b), when the reference surface S2 is reached, the fluctuation amount of the relative distance, and hence the movement amounts α, β, γ, and δ of the mold position control mechanism 4 are obtained by the following equation: α = ( a0−a1) −ΔZ, β = (b0−b1) −ΔZ, γ = (c0−c1) −ΔZ, δ = (d0−d1) −ΔZ.

また、型位置制御機構４の動作量α，β，γ，δは、プレス成形機制御量ΔＺを用いなくても次式により導出できる。各位置検出部の上型１１、下型１２の相対距離の検出量の平均値をＺａｖｅとする。ここで、Ｚａｖｅ＝（（ａ０−ａ１）＋（ｂ０−ｂ１）＋（ｃ０−ｃ１）＋（ｄ０−ｄ１））／４、である。従って、型位置制御機構４の動作量α，β，γ，δは、α＝（ａ０−ａ１）−Ｚａｖｅ、β＝（ｂ０−ｂ１）−Ｚａｖｅ、γ＝（ｃ０−ｃ１）−Ｚａｖｅ、δ＝（ｄ０−ｄ１）−Ｚａｖｅ、となる。 Further, the operation amounts α, β, γ, and δ of the mold position control mechanism 4 can be derived from the following equation without using the press molding machine control amount ΔZ. Let Zave be the average value of the detection amounts of the relative distances of the upper mold 11 and the lower mold 12 of each position detection unit. Here, Zave = ((a0−a1) + (b0−b1) + (c0−c1) + (d0−d1)) / 4. Accordingly, the movement amounts α, β, γ, and δ of the mold position control mechanism 4 are α = (a0−a1) −Zave, β = (b0−b1) −Zave, and γ = (c0−c1) −Zave, δ. = (D0-d1) -Zave.

上述のような、プレス成形機制御量ΔＺや相対位置の検出量を用いて、型位置制御機構４の制御を行うと、これらの量がプレス成形機１０ａの動作状態に依存しないので、制御系が簡単になり、プレス成形機１０ａを変更した場合においても、プレス成形機１０ａから信号を取り出すための改造工事が不要となる。 When the mold position control mechanism 4 is controlled using the press molding machine control amount ΔZ and the relative position detection amount as described above, these amounts do not depend on the operating state of the press molding machine 10a. Thus, even when the press molding machine 10a is changed, a remodeling work for taking out a signal from the press molding machine 10a becomes unnecessary.

次に、図６、図７（ａ）（ｂ）を参照して、他の実施形態に係る被覆成形体の製造装置１を説明する。この製造装置１は、図６に示すように、下型１１を支持する支持部４１を複数備えており、そのうちの１つの支持部４１の進退位置が固定されたもの（支持部４３）となっている。このように、複数の支持部のうちの１つを固定して進退する支持部４１の個数を減らすことにより、制御変数を減らすことができ、効率的に下型１２の位置制御ができる。 Next, with reference to FIG. 6, FIG. 7 (a) (b), the manufacturing apparatus 1 of the covering molded object which concerns on other embodiment is demonstrated. As shown in FIG. 6, the manufacturing apparatus 1 includes a plurality of support portions 41 that support the lower mold 11, and one of the support portions 41 has a fixed advance / retreat position (support portion 43). ing. In this way, by reducing the number of support portions 41 that move forward and backward while fixing one of the plurality of support portions, the control variable can be reduced, and the position control of the lower mold 12 can be performed efficiently.

また、進退位置が固定された支持部４３として、図７（ａ）又は図７（ｂ）に示すように、略球形又は略半球形の頭部４３ａを備えて、この頭部４３ａを下型１２の下面に設けた略球形又は略半球形の凹部１２ａに嵌合させるものを用いることができる。前者は下型１２の上下動を制約することができるという利点を有し、後者は組み込みが容易であるという利点を有する。 Further, as shown in FIG. 7 (a) or FIG. 7 (b), the support 43 having a fixed advance / retreat position is provided with a substantially spherical or substantially hemispherical head 43a. What is fitted to the substantially spherical or substantially hemispherical concave portion 12a provided on the lower surface of 12 can be used. The former has the advantage that the vertical movement of the lower mold 12 can be restricted, and the latter has the advantage that it is easy to incorporate.

次に、さらに他の実施形態に係る被覆成形体の製造装置１を説明する。この製造装置１は、位置検出部として、下型１２又は上型１１のどちらか一方の型に設けられ、他方の型との上下方向距離を検出する縦位置検出部３と、水平方向距離を検出する横位置検出部６と、を備える。縦位置検出部３は、下型１２又は上型１１のどちらか一方の型の肩部に設けられ、対向する他方の型との縦方向距離を検出し、横位置検出部６は、下型１２又は上型１１のどちらか一方の型の外壁に設けられて他方の型の外壁面との横方向距離を検出する。位置検出部として、接触式リニアセンサや、非接触式リニアセンサを使用することができる。 Next, a coated molded body manufacturing apparatus 1 according to still another embodiment will be described. The manufacturing apparatus 1 includes a vertical position detection unit 3 that is provided in one of the lower mold 12 and the upper mold 11 as a position detection unit and detects a vertical distance from the other mold, and a horizontal distance. A lateral position detection unit 6 for detection. The vertical position detector 3 is provided on the shoulder of one of the lower mold 12 and the upper mold 11 to detect a vertical distance from the opposite mold, and the horizontal position detector 6 is a lower mold. 12 or the upper mold 11 is provided on the outer wall of one of the molds to detect a lateral distance from the outer wall of the other mold. A contact type linear sensor or a non-contact type linear sensor can be used as the position detection unit.

図８（ａ）（ｂ）は、上述した位置検出部の構成例を示し、縦位置検出部３は、下型１２に設けられた凸部３１の上面基準面上の点Ｐの上下位置変動を検出し、横位置検出部６は、下型１２の側壁面上の点Ｑの水平位置変動を検出する。これらの検出点Ｐ，Ｑは、図８（ｂ）に示すように、下型１２の４周にそれぞれ４点づつ設定されており、上型１１と下型１２の相対位置の上下方向及び水平方向の変動が検出される。また、この製造装置１は、上型１１と下型１２の水平方向の相対位置の変動を修正する型位置制御機構５を備えている。 8A and 8B show a configuration example of the position detection unit described above, and the vertical position detection unit 3 is configured to change the vertical position of the point P on the upper surface reference plane of the convex portion 31 provided in the lower mold 12. The horizontal position detector 6 detects the horizontal position fluctuation of the point Q on the side wall surface of the lower mold 12. As shown in FIG. 8B, these detection points P and Q are set at four points on each of the four circumferences of the lower die 12, and the relative positions of the upper die 11 and the lower die 12 in the vertical direction and the horizontal direction. A change in direction is detected. In addition, the manufacturing apparatus 1 includes a mold position control mechanism 5 that corrects a change in the relative position of the upper mold 11 and the lower mold 12 in the horizontal direction.

このような位置検出部によれば、上下方向と水平方向の両方向について位置検出できるので、これらの検出結果に基づいて、成形体における立上り部の被覆膜厚とともに平面部の被覆膜厚を制御でき、また、各位置検出部が上型や下型の外部に設けられているので、位置検出部の調整や目視検査などの保守、位置検出部の設置や信号取り出しなどが容易である。 According to such a position detection unit, it is possible to detect the position in both the vertical direction and the horizontal direction, and based on these detection results, the coating film thickness of the flat part as well as the coating film thickness of the rising part in the molded body is determined. Further, since each position detection unit is provided outside the upper mold and the lower mold, maintenance such as adjustment of the position detection unit and visual inspection, installation of the position detection unit and signal extraction are easy.

図９（ａ）（ｂ）は、上述の製造装置１の横位置検出部６と型位置制御機構５の動作を説明する。上型１１と下型１２の水平方向の相対位置が本来の位置から変動すると、図９（ａ）に示すように、成形体の立上り部分に対応する両型間の空間ｘ，ｙに厚みの変動が生じる。このような変動が横位置検出部６によって検出されると、図９（ｂ）に示すように、下型１２の移動方向の反対側の型位置制御機構５を動作させ、支持部５１を駆動部５０によって押し出し、対向する側の支持部５１は引き下げる。これにより下型１２の水平位置の修正し、製造される成形体の肉厚や被覆材料の膜厚を所定の寸法に保つことができる。駆動部５０は、例えば、油圧によって支持部５１を移動させるものであり、配管５２からの油圧によって上述の水平位置調整がなされる。 9A and 9B illustrate the operations of the lateral position detector 6 and the mold position control mechanism 5 of the manufacturing apparatus 1 described above. When the horizontal relative position of the upper mold 11 and the lower mold 12 fluctuates from the original position, as shown in FIG. 9A, the thicknesses x and y between the two molds corresponding to the rising portion of the molded body are increased. Variations occur. When such a variation is detected by the lateral position detection unit 6, as shown in FIG. 9B, the mold position control mechanism 5 on the side opposite to the moving direction of the lower mold 12 is operated to drive the support unit 51. Extruded by the part 50, the support part 51 on the opposite side is pulled down. As a result, the horizontal position of the lower mold 12 can be corrected, and the thickness of the produced molded body and the film thickness of the coating material can be maintained at predetermined dimensions. The drive unit 50 moves the support unit 51 by, for example, hydraulic pressure, and the horizontal position adjustment described above is performed by the hydraulic pressure from the pipe 52.

次に、図１０（ａ）（ｂ）を参照して、さらに他の実施形態に係る被覆成形体の製造装置１を説明する。この製造装置１は、下型１２との接触部がローラ構造で形成された支持部先端を有する型位置制御機構を備えている。図１０（ａ）は、下型１２を下方から支持する型位置制御機構４を備えた例を示す。型位置制御機構４は、駆動部４０と駆動部４０によって上下に進退される支持部４１とを備え、支持部４１の先端はローラ構造４１ａを備えている。すなわち、支持部４１の先端は、下型１２の下面を転がり軸受け構造によって支持する。また、図１０（ｂ）は、下型１２を水平方向から支持する型位置制御機構５を備えた例を示す。型位置制御機構５は、駆動部５０と駆動部５０によって水平方向に進退される支持部５１とを備え、支持部５１の先端はローラ構造５１ａを備えている。すなわち、支持部５１の先端は下型１２の側面を転がり軸受け構造によって支持する。 Next, with reference to FIG. 10 (a) (b), the manufacturing apparatus 1 of the covering molded object which concerns on other embodiment is demonstrated. The manufacturing apparatus 1 includes a mold position control mechanism having a support portion tip formed with a roller structure in a contact portion with the lower mold 12. FIG. 10A shows an example provided with a mold position control mechanism 4 that supports the lower mold 12 from below. The mold position control mechanism 4 includes a drive unit 40 and a support unit 41 that is moved up and down by the drive unit 40, and the tip of the support unit 41 includes a roller structure 41 a. That is, the tip of the support portion 41 supports the lower surface of the lower mold 12 by a rolling bearing structure. FIG. 10B shows an example provided with a mold position control mechanism 5 that supports the lower mold 12 from the horizontal direction. The mold position control mechanism 5 includes a drive unit 50 and a support unit 51 that is advanced and retracted in the horizontal direction by the drive unit 50, and the tip of the support unit 51 includes a roller structure 51a. That is, the tip of the support portion 51 supports the side surface of the lower mold 12 with a rolling bearing structure.

上述したような支持部４１や支持部５１によると、成形樹脂を圧縮成形する段階、又はその後上型１１の下面と脂成形体との間に流動性被覆材料を注入する段階において、樹脂圧力により上型１１と下型１２の相対位置が変動した場合に、下型１２と支持ベース１３の間に設置してある型位置制御機構４又は型位置制御機構５に対して働く、駆動方向に直交する摩擦抵抗負荷を逃がすことができ、スムーズな型位置制御ができる。 According to the support portion 41 and the support portion 51 as described above, and have your molding resin step of compression molding, or the step of injecting a flowable coating material between the lower surface and the fat molded body thereafter on type 11, resin Driving direction acting on the mold position control mechanism 4 or the mold position control mechanism 5 installed between the lower mold 12 and the support base 13 when the relative position of the upper mold 11 and the lower mold 12 fluctuates due to pressure. The frictional resistance load orthogonal to the direction can be released, and smooth mold position control can be performed.

次に、図１１を参照して、さらに他の実施形態に係る被覆成形体の製造装置１を説明する。図１１は、上型１１、下型１２、及び支持ベース１３を備えた製造装置１と、上下のダイプレートＤＰ１，ＤＰ２を示す。この製造装置１の支持ベース１３には、下型１２を下方から支持する４つの型位置制御機構４と下型１２を水平方向の４方向から支持する各２つづつの８つの型位置制御機構５とを備えている。これらの型位置制御機構４、５を用いて、不図示の縦位置検出部３と横位置検出部６の検出結果に基づいて、上型１１と下型１２の相対位置のずれを修正して、製造される成形体の肉厚や被覆材料の膜厚を所定の寸法に保つことができる。 Next, with reference to FIG. 11, the manufacturing apparatus 1 of the covering molded body which concerns on other embodiment is demonstrated. FIG. 11 shows a manufacturing apparatus 1 including an upper mold 11, a lower mold 12, and a support base 13, and upper and lower die plates DP1 and DP2. The support base 13 of the manufacturing apparatus 1 includes four mold position control mechanisms 4 for supporting the lower mold 12 from below and two mold position control mechanisms 5 for supporting the lower mold 12 from four horizontal directions. And. Using these mold position control mechanisms 4 and 5, based on the detection results of the vertical position detection unit 3 and the horizontal position detection unit 6 (not shown), the relative position shift between the upper mold 11 and the lower mold 12 is corrected. The thickness of the molded article to be produced and the film thickness of the coating material can be kept at predetermined dimensions.

なお、本発明は、上記構成に限られることなく種々の変形が可能である。例えば、駆動部４０，５０は、油圧によらずに、ボールねじを用いて支持部４１，５１を進退させるものでもよい。また、位置検出部の非接触式リニアセンサとして、レーザ光、超音波、渦電流等を利用するセンサを用いることができる。 The present invention is not limited to the above-described configuration, and various modifications can be made. For example, the drive units 40 and 50 may be configured to advance and retract the support units 41 and 51 using a ball screw without using hydraulic pressure. In addition, a sensor using laser light, ultrasonic waves, eddy currents, or the like can be used as the non-contact linear sensor of the position detection unit.

本発明に係る被覆成形体の製造装置の断面とこの装置を駆動するプレス成形機正面図。The cross section of the manufacturing apparatus of the covering molded object which concerns on this invention, and the press molding machine front view which drives this apparatus. （ａ）〜（ｄ）は製造中の主要段階における同上装置の断面図。(A)-(d) is sectional drawing of an apparatus same as the above in the main stage in manufacture. （ａ）は同上装置の下型が傾斜した場合の断面図、（ｂ）は（ａ）の状態から傾斜を修正する様子を示す同装置の断面図。(A) is sectional drawing when the lower mold | type of the apparatus same as the above inclines, (b) is sectional drawing of the apparatus which shows a mode that inclination is corrected from the state of (a). 同上装置における支持部の進退制御を説明する制御ブロック構成図。The control block block diagram explaining the advance / retreat control of the support part in an apparatus same as the above. （ａ）は同上装置における上型と下型の相対位置を説明する模式図、（ｂ）は同装置における上型と下型の相対位置がずれた状態を説明する模式図。(A) is a schematic diagram explaining the relative position of the upper mold | type and lower mold | type in the same apparatus, (b) is a schematic diagram explaining the state which the relative position of the upper mold | type and lower mold | type in the apparatus shifted | deviated. 他の実施形態に係る同上装置の下型と型位置制御機構の概念図。The conceptual diagram of the lower mold | type and type | mold position control mechanism of the apparatus which concerns on other embodiment. （ａ）（ｂ）は同上装置における固定式の支持部の例を示す断面図。(A) (b) is sectional drawing which shows the example of the fixed support part in an apparatus same as the above. （ａ）はさらに他の実施形態に係る同上装置の断面図、（ｂ）は同装置の下型と支持ベースの平面図。(A) is sectional drawing of the apparatus same as the above which concerns on other embodiment, (b) is a top view of the lower mold | type and support base of the apparatus. （ａ）は図８（ａ）に示した装置の下型の水平方向位置がずれた場合の断面図、（ｂ）は図９（ａ）の状態から水平方向位置ずれを修正する様子を示す同装置の断面図。8A is a cross-sectional view when the horizontal position of the lower mold of the apparatus shown in FIG. 8A is shifted, and FIG. 9B shows how the horizontal position correction is corrected from the state of FIG. Sectional drawing of the apparatus. （ａ）（ｂ）はさらに他の実施形態に係る同上装置の断面図。(A) (b) is sectional drawing of the apparatus same as the above which concerns on other embodiment. さらに他の実施形態に係る同上装置を上下のダイプレートと透過状態の支持ベースとともに示す斜視図。The perspective view which shows the same apparatus which concerns on other embodiment with an upper and lower die plate and the support base of a permeation | transmission state.

Explanation of symbols

１製造装置
２被覆成形体
３縦位置検出部
４，５型位置制御機構
６横位置検出部
７制御部
１１プレス成形機
１１上型
１２下型
１３支持ベース
２１成形樹脂
２２成形体
２３流動性被覆材料
２４被覆層 DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Covering molded object 3 Vertical position detection part 4,5 Type | mold position control mechanism 6 Horizontal position detection part 7 Control part 11 Press molding machine 11 Upper mold | type 12 Lower mold | type 13 Support base 21 Molding resin 22 Molded body 23 Fluidity coating | covering Material 24 Coating layer

Claims

A space is provided between the convex upper mold for molding the surface of the molded body and the concave lower mold for molding the back surface, and the molding resin is compression molded in this space, and then the lower mold surface or the upper mold surface In a manufacturing apparatus for a coated molded body, a fluid coating material is injected between the molded body formed by compression molding and heat-cured, and a coating layer is formed on the surface of the molded body.
A position detector for detecting a relative position between the upper mold and the lower mold;
The relative position between the upper mold and the lower mold detected by the position detection unit when the molding resin is compression-molded or when a flowable coating material is injected after compression molding to form a coating layer on the surface of the molded body is predetermined. A mold position control mechanism that drives the upper mold or the lower mold so as to correct the positional deviation when being displaced from the position;
An apparatus for manufacturing a coated molded body, wherein the mold position control mechanism is provided inside a support base that is a mold for supporting the upper mold or the lower mold.

The support base has a recess for storing and supporting the lower mold, and the mold position control mechanism is provided by providing a support portion that protrudes forward and backward on the bottom surface of the recess and the tip supports the lower mold. The apparatus for producing a coated molded body according to claim 1, wherein:

3. The apparatus for manufacturing a coated molded body according to claim 2, wherein there are a plurality of support portions for supporting the lower mold, and the advance / retreat position of one of the support portions is fixed.

The position detection unit is provided in one of the lower mold and the upper mold, and a vertical position detection unit that detects a vertical distance from the other mold, and a horizontal position detection unit that detects a horizontal distance. The manufacturing apparatus of the covering molded object of Claim 1 or Claim 2 characterized by the above-mentioned.

The vertical position detection unit is provided on a shoulder of one of the lower mold and the upper mold, detects a vertical distance from the opposite mold, and the horizontal position detection unit is the lower mold The apparatus for producing a coated molded body according to claim 4, wherein the apparatus is provided on an outer wall of one of the upper molds and detects a lateral distance from the outer wall surface of the other mold.

A control unit that receives signals from the plurality of position detection units and controls the advancement and retraction of the support unit; the control unit receives a stroke control signal of a press molding machine that drives the lower die or the upper die up and down; The amount of movement of the support part is calculated using this as a reference value for control, and the advancement / retraction of the support part is driven, The coated molded body according to any one of claims 1 to 5, apparatus.