JP6512508B2 - Method of manufacturing mold apparatus - Google Patents

Method of manufacturing mold apparatus Download PDF

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JP6512508B2
JP6512508B2 JP2015024724A JP2015024724A JP6512508B2 JP 6512508 B2 JP6512508 B2 JP 6512508B2 JP 2015024724 A JP2015024724 A JP 2015024724A JP 2015024724 A JP2015024724 A JP 2015024724A JP 6512508 B2 JP6512508 B2 JP 6512508B2
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mold
temperature control
cavity
plating
covering member
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JP2016147407A (en
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仁 藤吉
仁 藤吉
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、金型装置の製造方法に関する。   The present invention relates to a method of manufacturing a mold apparatus.

樹脂成形に用いられる金型装置は、通常、上金型と下金型とによってこれらの間に所定の形状、構造の樹脂成形品の成形を可能とするためのキャビティを備えた構造を有している。   The mold apparatus used for resin molding usually has a structure provided with a cavity for enabling molding of a resin molded article of a predetermined shape and structure between them by the upper mold and the lower mold. ing.

従来より、この金型装置については様々な観点からの工夫、改善が施されてきている。例えば、キャビティ内への樹脂の流入やその硬化を制御するための加熱温度の調整手段についての工夫がある。また、樹脂成形品の表面平滑性の向上や樹脂に接する金型表面の劣化、損傷の抑制のための金型の表面処理についての工夫がある。   In the past, devices and improvements have been applied to this mold apparatus from various points of view. For example, there are devices for adjusting the heating temperature for controlling the inflow of the resin into the cavity and the curing thereof. In addition, there are devices for improving the surface smoothness of the resin molded product, for the deterioration of the mold surface in contact with the resin, and for the surface treatment of the mold for the suppression of damage.

具体的には、上金型と下金型それぞれのキャビティ側とは反対側の面に、温度調整用の流体を通過させるための温度調整用配管を溶着することが提案されている（例えば、特許文献１を参照）。   Specifically, it has been proposed to weld a temperature control pipe for passing a temperature control fluid on the surface of each of the upper mold and the lower mold opposite to the cavity side (for example, See Patent Document 1).

また、近年では、キャビティ側の面の耐久性を高めるため、そして、樹脂成形品の意匠面を鏡面に仕上げるために、キャビティ側の面にメッキ処理を施してメッキ層を形成することが行われている。   Also, in recent years, in order to enhance the durability of the surface on the cavity side and to finish the design surface of the resin molded product to a mirror surface, the surface on the cavity side is plated to form a plated layer. ing.

図５には、このような工夫、改善が施された従来の金型装置の製造方法の概略断面工程図を示している。この方法では、まず、金型２の材料である鋼材１を金型２のキャビティ側の面２１と、キャビティとは反対側の面２２とが所定の設計寸法となるまで削り込み、両面側に最終仕上げの加工を施して金型２を作製する（工程Ｓ３−１）。   FIG. 5 shows a schematic cross-sectional process drawing of a method of manufacturing a conventional mold apparatus to which such a device or improvement is applied. In this method, first, the steel material 1 which is a material of the mold 2 is scraped until the surface 21 on the cavity side of the mold 2 and the surface 22 on the opposite side of the cavity have predetermined design dimensions, The final finishing process is performed to produce the mold 2 (step S3-1).

次に、金型２をメッキ浴５のメッキ液５１に浸漬してメッキ処理を施し、金型２の表面にメッキ層６を形成する（工程Ｓ３−２）。次に、キャビティ側の面２１とは反対側の面２２に温度調整用の流体を通過させるための温度調整用配管３を溶着する（工程Ｓ３−３）。そして、金型２に型枠部材７等を取り付けて金型装置を完成させる（工程Ｓ３−４）。   Next, the mold 2 is immersed in the plating solution 51 of the plating bath 5 to perform plating, thereby forming the plating layer 6 on the surface of the mold 2 (step S3-2). Next, the temperature control pipe 3 for allowing the temperature control fluid to pass is welded to the surface 22 opposite to the surface 21 on the cavity side (step S3-3). Then, the mold member 7 and the like are attached to the mold 2 to complete the mold apparatus (step S3-4).

特開平２−７６７０９号公報JP-A-2-76709

しかしながら、前記の従来方法においては、キャビティ側の面２１の最終仕上げ工程（工程Ｓ３−１）やメッキ処理工程（工程Ｓ３−２）の後に、キャビティとは反対側の面２２に温度調整用配管３の溶着工程（工程Ｓ３−３）を行っている。そのため、溶着の高熱により金型２全体に予期しない変形が生じる場合があった。そして、この金型２の予期しない変形により、成形した樹脂成形品に設計通りの寸法、精度がでないという問題があった。   However, in the above-mentioned conventional method, after the final finishing step (step S3-1) of the surface 21 on the cavity side and the plating step (step S3-2), piping for temperature control on the surface 22 opposite to the cavity The third welding step (step S3-3) is performed. Therefore, the high heat of welding may cause unexpected deformation of the entire mold 2. Then, due to the unexpected deformation of the mold 2, there is a problem that the dimension and accuracy as designed are not obtained in the molded resin molded product.

また、メッキ処理の工程（工程Ｓ３−２）後に温度調整用配管３の溶着工程（工程Ｓ３−３）を行うため、メッキ層６が局所的に高温となり、メッキ層６に歪み、ムラ等が発生し、図６に示すように、成形した樹脂成形品１０の意匠面に歪み１１やムラ１２が表出する場合があった。   In addition, since the welding step (step S3-3) of the temperature control pipe 3 is performed after the step of the plating process (step S3-2), the temperature of the plating layer 6 locally becomes high, and distortion, unevenness, etc. occur in the plating layer 6. As a result, as shown in FIG. 6, distortion 11 and unevenness 12 may appear on the design surface of the molded resin article 10.

このような、金型２の変形やメッキ層６の歪みやムラの発生を抑制するためには、温度調整用配管３の溶着時に加熱温度を十分に考慮して溶着作業をする必要がある。しかしながら、これらの溶着作業は人手によるため、高品質の金型装置を安定的に製造するのが非常に困難であった。   In order to suppress the deformation of the mold 2 and the distortion and unevenness of the plating layer 6, it is necessary to perform the welding operation with sufficient consideration of the heating temperature at the time of welding of the temperature control pipe 3. However, since these welding operations are performed manually, it has been very difficult to stably manufacture high-quality mold apparatus.

本発明は、上記従来の問題点に鑑みてなされたものであり、温度調整用配管を備える金型装置において、金型の変形を抑え、金型精度を維持向上させ、キャビティ側の面に形成したメッキ層に歪みやムラが発生しないようにする金型装置の製造方法を提供することを課題とする。   The present invention has been made in view of the above-described conventional problems, and in a mold apparatus provided with piping for temperature control, deformation of the mold is suppressed, mold accuracy is maintained and improved, and formation is made on the surface on the cavity side. It is an object of the present invention to provide a method of manufacturing a mold apparatus which prevents distortion and unevenness in the plated layer.

本発明は、上記の課題を解決するために、以下のことを特徴としている。   The present invention is characterized by the following in order to solve the above-mentioned problems.

温度調整可能に形成された上金型と下金型の間にキャビティを備えた金型装置の製造方法であって、前記上金型および前記下金型において、前記キャビティとは反対側の面に、前記上金型および前記下金型の温度を調整するための温度調整用の流体を通過させる温度調整用配管を溶着する第１工程と、この第１工程の後に、溶着した前記温度調整用配管が露出しないように、前記上金型および前記下金型において、前記キャビティとは反対側の面を被覆部材で被覆する工程と、前記上金型および前記下金型において、前記キャビティとは反対側の面を前記被覆部材で被覆した状態で前記キャビティ側の面にメッキ処理を施す第３工程と、この第３工程の後に、前記被覆部材を取り外す第４工程とを備えることを特徴とする。   A method of manufacturing a mold apparatus comprising a cavity between an upper mold and a lower mold which are formed so as to be temperature adjustable, wherein the upper mold and the lower mold have a surface opposite to the cavity. A first step of welding a temperature control pipe for passing a temperature control fluid for controlling the temperature of the upper mold and the lower mold, and the temperature control welded after the first step Covering the opposite side of the upper mold and the lower mold with a covering member in the upper mold and the lower mold so as not to expose the pipe, and in the upper mold and the lower mold, Is characterized in that it comprises a third step of plating the cavity-side surface in a state in which the opposite surface is covered with the covering member, and a fourth step of removing the covering member after the third step. I assume.

本発明によれば、温度調整用配管を備える金型装置において、金型の変形を抑え、金型精度を維持向上させ、キャビティ側の面に形成したメッキ層に歪みやムラが発生しないようにすることが可能な金型装置の製造方法が提供される。   According to the present invention, in a mold apparatus provided with piping for temperature control, deformation of the mold is suppressed, mold precision is maintained and improved, and distortion or unevenness does not occur in the plated layer formed on the surface on the cavity side. A method of manufacturing a mold apparatus is provided.

本発明の金型装置の製造方法の一実施形態（第１実施形態）を示す概略断面工程図である。It is a schematic cross-sectional process drawing which shows one Embodiment (1st Embodiment) of the manufacturing method of the metal mold | die apparatus of this invention. （ａ）は、被覆部材を装着した上金型の概略断面図であり、（ｂ）は、下金型の概略断面図である。(A) is a schematic sectional view of the upper mold mounted with the covering member, and (b) is a schematic sectional view of the lower mold. 金型と被覆部材の接合部の部分拡大断面図である。It is a partial expanded sectional view of the junction part of a metal mold | die and a covering member. 本発明の金型装置の製造方法の第２実施形態を示す概略断面工程図である。It is a schematic cross-section process drawing which shows 2nd Embodiment of the manufacturing method of the metal mold | die apparatus of this invention. 従来の金型装置の製造方法を示す概略断面工程図である。It is a schematic cross-section process drawing which shows the manufacturing method of the conventional metal mold | die apparatus. 樹脂成形品の意匠面に歪みやムラが表出した状態を示す概略図である。It is the schematic which shows the state which distortion and the nonuniformity appeared on the design surface of the resin molded product.

以下、発明を実施するための形態についてさらに詳細に説明する。   Hereinafter, embodiments of the present invention will be described in more detail.

金型装置の製造方法は、温度調整可能に形成された上金型と下金型の間にキャビティを備えた金型装置を製造する。この金型装置の製造方法は、少なくとも、以下の第１工程から第４工程を備えている。
（１）第１工程：キャビティとは反対側の面に、金型の温度を調整するための温度調整用の流体を通過させる温度調整用配管を溶着する工程。
（２）第２工程：溶着した温度調整用配管が露出しないように、キャビティとは反対側の面を被覆部材で被覆する工程。
（３）第３工程：キャビティとは反対側の面を被覆部材で被覆した状態で、キャビティ側の面にメッキ処理を施す工程。
（４）第４工程：メッキ処理を施す工程の後に被覆部材を取り外す工程。 The method of manufacturing a mold apparatus manufactures a mold apparatus having a cavity between an upper mold and a lower mold which are formed to be temperature adjustable. The method of manufacturing the mold apparatus includes at least the following first to fourth steps.
(1) First step: a step of welding a temperature control pipe through which a fluid for temperature control for controlling the temperature of the mold is allowed to pass on the surface opposite to the cavity.
(2) Second step: a step of covering the surface opposite to the cavity with a covering member so that the welded temperature control pipe is not exposed.
(3) Third step: a step of plating the surface on the cavity side in a state where the surface opposite to the cavity is covered with the covering member.
(4) Fourth step: a step of removing the covering member after the step of applying a plating treatment.

図１に、本発明の金型装置の製造方法の一実施形態（第１実施形態）の概略断面工程図を示す。以下、図１の各工程に沿って詳細に説明する。
（工程Ｓ１−１：準備工程）
まず、従来と同様に、後に上金型２ａおよび下金型２ｂとして用いる金型２の材料である鋼材１を金型２のキャビティ側の面（以下、単に型面と略称する）２１と、キャビティとは反対側の面（以下、単に裏面と略称する）２２から所定の設計肉厚まで削り込む。そして、型面および裏面２２の両面とも最終仕上げまでの加工を行い、金型２を作製する。金型２の材質やその肉厚は特に制限はなく、金型２の目的、用途に応じた形状や大きさ等を考慮して適宜決定することができるが、通常、材質としては、例えば、炭素工具鋼等の工具鋼等が、また、肉厚としては３〜５０ｍｍ程度が考慮される。 FIG. 1 shows a schematic cross-sectional process drawing of an embodiment (first embodiment) of a method of manufacturing a mold apparatus of the present invention. Hereafter, it demonstrates in detail along each process of FIG.
(Step S1-1: Preparation Step)
First, as in the conventional case, the steel material 1 which is the material of the mold 2 used later as the upper mold 2a and the lower mold 2b is a cavity side surface (hereinafter simply referred to as mold surface) 21 of the mold 2; It is scraped to a predetermined design thickness from a surface (hereinafter simply referred to as a back surface) 22 opposite to the cavity. Then, both the mold surface and the back surface 22 are processed to the final finish, and the mold 2 is manufactured. The material and thickness of the mold 2 are not particularly limited, and can be appropriately determined in consideration of the shape, size, etc. according to the purpose of the mold 2 and the application, but generally, the material is, for example, Tool steel etc., such as carbon tool steel, etc., and about 3-50 mm is considered as thickness.

なお、本発明において金型の最終仕上げとは、樹脂成形品を鏡面仕上げする場合には鏡面加工し、樹脂成形品にシボを形成する場合には、シボに対応する凹凸を形成すること等の加工を意味する。
（工程Ｓ１−２：第１工程）
次に、金型２の裏面２２に温度調整用の流体を通過させるための温度調整用配管３を溶着する。温度調整用配管３の材質、その径や長さ、配置設計等は、金型２が均一に所定の設定温度に加熱されれば特に制限はなく、適宜決定することができる。 In the present invention, the final finishing of the mold means mirror-finishing the resin molded product in the mirror-finishing process, and forming irregularities corresponding to the resin-embossed product in forming the emboss on the resin molded product. It means processing.
(Step S1-2: First Step)
Next, the temperature control piping 3 for passing the temperature control fluid is welded to the back surface 22 of the mold 2. The material, diameter, length, layout design, and the like of the temperature control pipe 3 are not particularly limited as long as the mold 2 is uniformly heated to a predetermined set temperature, and can be appropriately determined.

また、温度調整用配管３の溶着方法は、金型２の裏面２２に温度調整用配管３が強固に固着される溶着方法であれば特に制限はなく、例えば、溶接、ロウ付け、ハンダ付け等を適用することができる。
（工程Ｓ１−３：第２工程）
次に、溶着した温度調整用配管３が露出しないように、金型２の裏面２２を被覆するように被覆部材４を装着する。図２には（ａ）上金型２ａと（ｂ）下金型２ｂの各々の場合について示している。 Further, the welding method of the temperature control pipe 3 is not particularly limited as long as the temperature control pipe 3 is firmly fixed to the back surface 22 of the mold 2, for example, welding, brazing, soldering, etc. Can be applied.
(Step S1-3: second step)
Next, the covering member 4 is mounted so as to cover the back surface 22 of the mold 2 so that the welded temperature control pipe 3 is not exposed. FIG. 2 shows the respective cases of (a) upper mold 2a and (b) lower mold 2b.

被覆部材４は、次の第３工程（工程Ｓ１−４）において、メッキ液５１が温度調整用配管３に付着しないようにするために装着するものである。被覆部材４の材質は、メッキ液５１により浸食されないものであれば特に制限はない。このような材質としては、例えば、樹脂成形品や金属成形品の表面に樹脂被覆を形成したもの等を挙げることができる。
（工程Ｓ１−４：第３工程）
次に、被覆部材４を装着した金型２の型面２１をメッキ浴５のメッキ液５１に浸漬してメッキ処理を施し、型面２１にメッキ層６を形成する。メッキ処理の種類は特に制限されないが、例えば、クロムメッキ、ニッケルメッキ等のメッキ処理を適用することができる。これらの中でも、特に、硬質クロムメッキを好適に適用することができる。 The covering member 4 is attached in order to prevent the plating solution 51 from adhering to the temperature control pipe 3 in the next third step (step S1-4). The material of the covering member 4 is not particularly limited as long as it is not eroded by the plating solution 51. As such a material, what formed resin coating on the surface of a resin molded product or a metal molded product etc. can be mentioned, for example.
(Step S1-4: third step)
Next, the mold surface 21 of the mold 2 on which the covering member 4 is mounted is dipped in the plating solution 51 of the plating bath 5 to perform plating, and the plating layer 6 is formed on the mold surface 21. The type of plating process is not particularly limited, but, for example, plating processes such as chromium plating and nickel plating can be applied. Among these, in particular, hard chromium plating can be suitably applied.

なお、温度調整用配管３が銅製の場合、温度調整用配管３にメッキ液５１が付着すると、メッキ液５１の種類によってはその付着部分が侵食する場合がある。また、温度調整用配管３の溶着時に使用したフラックス等がメッキ液５１中に異物として浮遊し、これらがメッキ処理時に型面２１に付着してメッキ層６にピンホール等を発生させることがある。そのため、メッキ処理工程においては、温度調整用配管３にメッキ液５１を付着させないことが重要となる。   In the case where the temperature control pipe 3 is made of copper, when the plating solution 51 adheres to the temperature control pipe 3, depending on the type of the plating solution 51, the adhered portion may be eroded. In addition, flux and the like used at the time of welding of the temperature control pipe 3 may float as foreign matter in the plating solution 51, and these may adhere to the mold surface 21 at the time of plating treatment to cause pinholes and the like in the plating layer 6 . Therefore, in the plating process, it is important not to attach the plating solution 51 to the temperature control pipe 3.

その対策として、金型２の縁部と被覆部材４の接合部に防水機構を設けるのが望ましい。図３に、金型２と被覆部材４の接合部の部分拡大断面図を示す。   As a countermeasure, it is desirable to provide a waterproof mechanism at the joint between the edge of the mold 2 and the covering member 4. FIG. 3 shows a partially enlarged cross-sectional view of the joint between the mold 2 and the covering member 4.

図３に示す接合部では、金型２のキャビティの縁部に沿って二重のパッキン９からなる防水機構を設け、ボルト８により強固に接合してメッキ液５１の侵入を防止している。
（工程Ｓ１−５：第４工程）
上記第３工程が完了した段階で、金型２から被覆部材４を取り外す。
（工程Ｓ１−６：第５工程）
次に、被覆部材４を取り外した金型２に、型枠部材７等を取り付けることにより金型装置を完成させる。 At the joint portion shown in FIG. 3, a waterproof mechanism consisting of a double packing 9 is provided along the edge of the cavity of the mold 2 and is firmly joined by the bolt 8 to prevent the plating solution 51 from entering.
(Step S1-5: Fourth Step)
When the third step is completed, the covering member 4 is removed from the mold 2.
(Step S1-6: fifth step)
Next, the mold member 7 and the like are attached to the mold 2 from which the covering member 4 has been removed to complete the mold apparatus.

第１工程（工程Ｓ１−２）、第２工程（工程Ｓ１−３）、第３工程（工程Ｓ１−４）、第４工程（工程Ｓ１−５）および第５工程（工程Ｓ１−６）による金型装置の製造方法によれば、第１工程（工程Ｓ１−２）の後に、第３工程（工程Ｓ１−４）を行うので、形成したメッキ層６に局所的に熱が加わることがなくなる。このため、型面２１のメッキ層６に発生する歪みやムラ等を抑制することができる。すなわち、製造した金型装置により成形した樹脂成形品の意匠面に発生する歪みやムラ等の発生による不良を防止することが可能となる。   By the first step (step S1-2), the second step (step S1-3), the third step (step S1-4), the fourth step (step S1-5) and the fifth step (step S1-6) According to the method of manufacturing the mold apparatus, since the third step (step S1-4) is performed after the first step (step S1-2), heat is not locally applied to the formed plating layer 6 . For this reason, distortion, nonuniformity, etc. which generate | occur | produce in the plated layer 6 of the type | mold surface 21 can be suppressed. That is, it is possible to prevent a defect due to the occurrence of distortion, unevenness or the like generated on the design surface of the resin molded product molded by the manufactured mold apparatus.

本発明の金型装置の製造方法は、上記実施形態のほか、第１工程（工程Ｓ１−２）の前に、型面２１の所定の設計肉厚よりも厚みを残した状態に切削しておき、第１工程（工程Ｓ１−２）の後に、型面２１の最終仕上げを行うこともできる。図４に、この場合の実施形態（第２実施形態）の概略断面工程図を示す。以下、第２実施形態の金型装置の製造方法について図４の各工程に沿って詳細に説明する。
（工程Ｓ２−１：第１予備工程）
まず、金型２の材料である鋼材１の型面２１を所定の設計肉厚よりも厚みを残した状態の中間体２３まで削り込む。所定の設計肉厚よりも残す厚みは特に限定されるものではないが、通常、所定の設計肉厚よりも０．５ｍｍ程度厚く残すことが考慮される。一方、裏面２２はこの段階で所定の設計肉厚まで削り込み金型２を作製する。
（工程Ｓ２−２：第１工程）
次に、上記第１実施形態と同様に、金型２の裏面２２に温度調整用の流体を通過させるための温度調整用配管３を溶着する。
（工程Ｓ２−３：第２予備工程）
次に、第１予備工程（工程Ｓ２−１）において、所定の設計肉厚よりも厚みを残した状態に加工した中間体２３に対して、型面２１の所定の設計肉厚まで削り込む。この段階で、金型２の全ての面が所定の設計肉厚まで削り込まれた状態となる。 In the method of manufacturing a mold apparatus according to the present invention, in addition to the above embodiment, before the first step (step S1-2), cutting is performed so as to leave a thickness greater than a predetermined design thickness of the mold surface 21. Alternatively, final finishing of the mold surface 21 can be performed after the first step (step S1-2). FIG. 4 shows a schematic cross-sectional process drawing of the embodiment (second embodiment) in this case. Hereinafter, the method of manufacturing the mold apparatus of the second embodiment will be described in detail along the steps of FIG.
(Step S2-1: first preliminary step)
First, the mold surface 21 of the steel material 1 which is the material of the mold 2 is scraped down to the intermediate body 23 in a state where a thickness is left more than a predetermined design thickness . The thickness to be left over the predetermined design thickness is not particularly limited, but it is usually considered to leave about 0.5 mm thicker than the predetermined design thickness . On the other hand, the back surface 22 is cut to a predetermined design thickness at this stage to produce the mold 2.
(Step S2-2: First Step)
Next, similarly to the first embodiment, the temperature control piping 3 for passing the temperature control fluid is welded to the back surface 22 of the mold 2.
(Step S2-3: second preliminary step)
Next, in the first preliminary step (step S2-1), the intermediate body 23 processed so as to have a thickness greater than a predetermined design thickness is scraped to the predetermined design thickness of the mold surface 21. At this stage, all the surfaces of the mold 2 are cut to a predetermined design thickness .

その後、作製した金型２に対して、上記第１実施形態と同様に、第２工程（工程Ｓ２−４）、第３工程（工程Ｓ２−５）、第４工程（工程Ｓ２−６）、第５工程（工程Ｓ２−７）を行う。   Thereafter, the second step (step S2-4), the third step (step S2-5), the fourth step (step S2-6), and the second step are performed on the produced mold 2 as in the first embodiment. The fifth step (step S2-7) is performed.

以上の第２実施形態の金型装置の製造方法によれば、型面２１の第２予備工程（工程Ｓ２−３）を第１工程（工程Ｓ２−２）の後に行うことにより、高い寸法精度の金型装置とすることが可能となる。すなわち、温度調整用配管３の溶着時の熱により、金型２の型面２１に歪みやムラが発生した場合であっても、型面２１の最終仕上げにより歪みやムラが削り取られることになり、高い寸法精度の金型装置とすることができる。   According to the method of manufacturing a mold apparatus of the second embodiment described above, high dimensional accuracy can be achieved by performing the second preliminary step (step S2-3) of the mold surface 21 after the first step (step S2-2). It becomes possible to make it a mold apparatus. That is, even if distortion or unevenness occurs on the mold surface 21 of the mold 2 due to heat at the time of welding of the temperature control pipe 3, distortion or unevenness is scraped off by the final finish of the mold surface 21. The mold apparatus can have high dimensional accuracy.

また、第１工程（工程Ｓ２−２）の後に、型面２１の第２予備工程（工程Ｓ２−３）を行い、さらに、型面２１に対して第３工程（工程Ｓ２−５）を行うため、型面２１のメッキ層６に歪みやムラ等が発生することがない。すなわち、成形した樹脂成形品の意匠面に発生する歪みやムラ等の不良を防止することが可能となる。   In addition, after the first step (step S2-2), the second preliminary step (step S2-3) of the mold surface 21 is performed, and the third step (step S2-5) is performed on the mold surface 21. Therefore, no distortion or unevenness occurs in the plated layer 6 of the mold surface 21. That is, it is possible to prevent defects such as distortion and unevenness generated on the design surface of the molded resin molded product.

以上、本発明の金型装置の製造方法を実施形態に基づいて説明したが、本発明の金型装置の製造方法は上記の実施形態に限定されるものではなく、その要旨を逸脱しない範囲内において種々の変更が可能である。   As mentioned above, although the manufacturing method of the metallic mold device of the present invention was explained based on the embodiment, the manufacturing method of the metallic mold device of the present invention is not limited to the above-mentioned embodiment, Various changes are possible in.

例えば、第１予備工程（工程Ｓ２−１）では、型面２１を最終仕上げよりも厚みを残した状態まで切削しているが、意匠面の型面２１のみを最終仕上げよりも厚みを残した状態まで切削するようにしてもよい。これにより、少なくとも樹脂成形品における意匠面の歪みやムラの発生を防止することが可能となる。   For example, in the first preliminary step (step S2-1), although the mold surface 21 is cut to a state in which the thickness remains from the final finish, only the mold surface 21 of the design surface remains in the thickness than the final finish. It may be cut to the state. This makes it possible to prevent at least the occurrence of distortion or unevenness in the design surface of the resin molded product.

２ａ 上金型
２ｂ 下金型
２１ キャビティ側の面（型面）
２２ キャビティとは反対側の面（裏面）
２３ 最終仕上げよりも厚みを残した状態の中間体
３ 温度調整用配管
４ 被覆部材
2a upper mold 2b lower mold 21 surface on the cavity side (mold surface)
22 Surface opposite to the cavity (back side)
23 Intermediate 3 with remaining thickness than final finish 3 Piping for temperature control 4 Covering member

Claims (2)

温度調整可能に形成された上金型と下金型の間にキャビティを備えた金型装置の製造方法であって、
前記上金型および前記下金型において、前記キャビティとは反対側の面に、前記上金型および前記下金型の温度を調整するための温度調整用の流体を通過させる温度調整用配管を溶着する第１工程と、
この第１工程の後に、溶着した前記温度調整用配管が露出しないように、前記上金型および前記下金型において、前記キャビティとは反対側の面を被覆部材で被覆する工程と、
前記上金型および前記下金型において、前記キャビティとは反対側の面を前記被覆部材で被覆した状態で前記キャビティ側の面にメッキ処理を施す第３工程と、
この第３工程の後に、前記被覆部材を取り外す第４工程
とを備えることを特徴とする金型装置の製造方法。 What is claimed is: 1. A method of manufacturing a mold apparatus comprising a cavity between an upper mold and a lower mold which are formed so as to be temperature adjustable.
In the upper mold and the lower mold, on a surface opposite to the cavity, a temperature control pipe for passing a temperature control fluid for adjusting the temperature of the upper mold and the lower mold The first step of welding;
After the first step, covering a surface of the upper mold and the lower mold opposite to the cavity with a covering member so that the welded temperature control pipe is not exposed;
A third step of plating the surface on the cavity side in a state in which the surface opposite to the cavity is covered with the covering member in the upper mold and the lower mold;
And a fourth step of removing the covering member after the third step. 前記第１工程の前に、前記上金型および前記下金型において、前記キャビティ側の面を所定の設計肉厚よりも厚みを残した状態に切削する第１予備工程と、前記第１工程の後に、前記上金型および前記下金型において、前記キャビティ側の面を前記所定の設計肉厚となるまで削り込んだ後、鏡面加工またはシボに対応する凹凸を形成する最終仕上げを行う第２予備工程とを備えることを特徴とする請求項１に記載の金型装置の製造方法。 Before the first step, in the upper mold and the lower mold, a first preliminary step of cutting the surface on the cavity side leaving a thickness greater than a predetermined design thickness , and the first step After the surface on the cavity side is cut to the predetermined design thickness in the upper mold and the lower mold, and then a final finish is performed to form asperities corresponding to mirror finish or embossing The method for manufacturing a mold apparatus according to claim 1, comprising two preliminary steps.
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