JP4193834B2 - Adhesion method of release agent to molding die for magnesium alloy - Google Patents

Adhesion method of release agent to molding die for magnesium alloy Download PDF

Info

Publication number
JP4193834B2
JP4193834B2 JP2005304758A JP2005304758A JP4193834B2 JP 4193834 B2 JP4193834 B2 JP 4193834B2 JP 2005304758 A JP2005304758 A JP 2005304758A JP 2005304758 A JP2005304758 A JP 2005304758A JP 4193834 B2 JP4193834 B2 JP 4193834B2
Authority
JP
Japan
Prior art keywords
release agent
mold
molding
magnesium alloy
molding die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2005304758A
Other languages
Japanese (ja)
Other versions
JP2006035318A (en
Inventor
英幸 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2005304758A priority Critical patent/JP4193834B2/en
Publication of JP2006035318A publication Critical patent/JP2006035318A/en
Application granted granted Critical
Publication of JP4193834B2 publication Critical patent/JP4193834B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Casting Devices For Molds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

本発明は、マグネシウム合金成形に用いる各種成形金型に対する離型剤の付着方法に関する。   The present invention relates to a method for attaching a release agent to various molding dies used for magnesium alloy molding.

マグネシウム合金を成形金型を用いて成形するにあたり、成形金型の成形面やマグネシウム合金の溶湯を供給する材料供給路等、成形金型におけるマグネシウム合金と接する材料接触面に対し予め離型剤を塗布し、型開き後の成形品取り出しを容易としている。従来は、図６に示すごとく、成形金型９を完全に開いた状態で、材料接触面９００を露出させ、固定型９１及び可動型９２の間から離型剤原液を水で希釈したものを直接スプレー９３で吹きつけることで、離型剤９３０の塗布を行なっていた。   When molding a magnesium alloy using a molding die, a mold release agent is previously applied to the material contact surface in contact with the magnesium alloy in the molding die, such as the molding surface of the molding die and the material supply path for supplying molten magnesium alloy. Application and easy removal of the molded product after mold opening. Conventionally, as shown in FIG. 6, the material contact surface 900 is exposed with the molding die 9 fully open, and the stock solution of the mold release agent diluted with water from between the fixed die 91 and the movable die 92 is used. The release agent 930 was applied by spraying directly with the spray 93.

従来方法では、離型剤塗布により、材料接触面９００に離型剤９３０による潤滑皮膜９３１が形成されると共に成形金型９が冷却されてしまう。アルミニウム合金成形の場合は成形金型のオーバーヒートを防止できるため、上記従来方法は適している。しかしながら、アルミニウム合金に比べ熱容量の小さいマグネシウム合金を成形する場合は成形金型９が過冷却されるため、マグネシウム合金溶湯の湯まわり性を悪化させ、成形品の外観品質の低下、成形品不良率の増加が生じる。   In the conventional method, the lubricant film 931 is formed on the material contact surface 900 by the release agent 930 and the molding die 9 is cooled by applying the release agent. In the case of aluminum alloy molding, the above conventional method is suitable because overheating of the molding die can be prevented. However, when a magnesium alloy having a smaller heat capacity than that of an aluminum alloy is molded, the molding die 9 is overcooled, so that the meltability of the molten magnesium alloy is deteriorated, the appearance quality of the molded product is deteriorated, and the defective rate of the molded product. Increase.

また、離型剤をむらなく材料接触面９００に対しスプレーするには相応の時間が必要である。また、離型剤９３０の吹き残りを乾燥させるためのエアブローの作業が必要である。このように、離型剤９３０をスプレーする方法は作業に時間がかかるため、成形のサイクルタイムを長くする要因にもなっている。また、離型剤９３０をスプレーする際に成形金型９の外部への飛散９３５やたれ落ち等が発生し、作業環境の悪化も発生する。   In addition, it takes time to spray the release agent uniformly on the material contact surface 900. Further, it is necessary to perform an air blowing operation for drying the remaining residue of the release agent 930. As described above, since the method of spraying the release agent 930 takes time to work, it also becomes a factor of extending the molding cycle time. Further, when the release agent 930 is sprayed, scattering 935 to the outside of the molding die 9, dripping and the like occur, and the working environment is also deteriorated.

また、図６に示すように、材料接触面９００でない、固定型９１と可動型９２との分割面９０１に離型剤が付着する問題もあった。特に分割面９０１に離型剤が付着すると、成形時に発生するバリ等が付き、固定型９１と可動型９２との型締めが甘くなり、成形に支障が生じることもある。   Further, as shown in FIG. 6, there is a problem that the release agent adheres to the split surface 901 of the fixed mold 91 and the movable mold 92, which is not the material contact surface 900. In particular, when a release agent adheres to the dividing surface 901, burrs or the like generated at the time of molding are attached, and the clamping between the fixed mold 91 and the movable mold 92 is loosened, which may hinder molding.

本発明は、かかる従来の問題点に鑑みてなされたもので、成形金型の過冷却を防ぎ、成形のサイクルタイムを短縮し、作業環境の悪化を防止できるマグネシウム合金用成形金型への離型剤の付着方法を提供しようとするものである。   The present invention has been made in view of such conventional problems, and is separated from a magnesium alloy molding die that can prevent overcooling of the molding die, shorten the molding cycle time, and prevent deterioration of the working environment. It is intended to provide a method for attaching a mold.

請求項１に記載の発明は、「固定型（１１）と可動型（１２）と、前記固定型と前記可動型により形成される成形キャビティ（１０）と、前記成形キャビティに射出ノズル（２０）よりマグネシウム合金の溶湯を射出して成形品を成形するマグネシウム合金用成形金型において、前記固定型（１１）と前記可動型（１２）とを型締め状態とするとともに、実際に溶湯射出を行うまでに、前記射出ノズル（２０）のノズル先端の固化したプラグをリリースするためのタイムラグを設け、当該タイムラグの間に前記成形キャビティ（１０）の材料接触面（１０１、１０２）に対し離型剤を付着させることを特徴とするマグネシウム合金用成形金型への離型剤の付着方法。」にある。   The invention according to claim 1 is: “a fixed mold (11) and a movable mold (12), a molding cavity (10) formed by the fixed mold and the movable mold, and an injection nozzle (20) in the molding cavity. In a magnesium alloy molding die in which a molten magnesium alloy is injected to form a molded product, the fixed mold (11) and the movable mold (12) are clamped and the molten metal is actually injected. By the time, a time lag for releasing the solidified plug at the nozzle tip of the injection nozzle (20) is provided, and a mold release agent for the material contact surface (101, 102) of the molding cavity (10) between the time lag "A method for adhering a mold release agent to a magnesium alloy molding die characterized by adhering to the above."

次に、本発明の作用につき説明する。固定型と可動型とを型締め状態に配置してやり、離型剤を付着させることで、離型剤を付着させる必要のない固定型及び可動型の分割面等に対する離型剤付着を防止、または少なくできる。また、固定型及び可動型の外部への離型剤の飛散を防止、または少なくできる。   Next, the operation of the present invention will be described. By placing the fixed mold and the movable mold in a clamped state, and attaching the release agent, it is possible to prevent the release agent from adhering to the split surfaces of the fixed mold and the movable mold that do not require the release agent to adhere, or Less. Further, the release agent can be prevented from being scattered outside the fixed type and the movable type.

このように本発明にかかる方法では離型剤が無駄に使われず、離型剤を希釈する水分をなくして原液そのものを使用することができる。または、離型剤を希釈する水分量を従来よりも少なくすることができる。そのため、成形金型への離型剤付着にともなう温度低下を防止でき、熱容量の小さいマグネシウム合金に対する優れた湯まわり性を確保することができる。また、湯まわり性向上から、成形品の外観品質を高め、不良率を減らすことができる。   Thus, in the method according to the present invention, the release agent is not wasted, and the stock solution itself can be used without the water that dilutes the release agent. Alternatively, the amount of water for diluting the release agent can be reduced as compared with the conventional case. Therefore, the temperature drop accompanying the mold release agent adhesion to the molding die can be prevented, and excellent hot water performance for a magnesium alloy having a small heat capacity can be ensured. Moreover, from the improvement of the hot water supply property, the appearance quality of the molded product can be improved and the defect rate can be reduced.

従来と異なり、可動型と駆動型を型締め状態で離型剤を塗布しているため、成形金型外への飛散やたれ落ち等が発生し難く、作業環境の悪化も生じ難い。成形金型が大きく開いた状態にないため、離型剤が材料接触面以外に付着し難い。従って、離型剤付着に要する時間も短くて済み、付着させた離型剤乾燥のためのエアブロー等の所要時間も同様に短くて済む。よって、成形のサイクルタイムを短縮できる。   Unlike the prior art, since the mold release agent is applied with the movable mold and the drive mold clamped, it is difficult for the mold to scatter or fall off the molding die, and the work environment is unlikely to deteriorate. Since the molding die is not in a wide open state, the release agent is difficult to adhere to other than the material contact surface. Therefore, the time required for attaching the release agent can be shortened, and the time required for air blow or the like for drying the attached release agent can be shortened as well. Therefore, the molding cycle time can be shortened.

さらに、本発明によれば、実際に溶湯射出を行うまでに、前記射出ノズル（２０）のノズル先端の固化したプラグをリリースするためのタイムラグを設け、当該タイムラグの間に前記成形キャビティ（１０）の材料接触面（１０１、１０２）に対し離型剤を付着させるようにしたので、独立した離型剤付着工程を必要とせず、大きくサイクルタイムを短縮でき、成形所要時間を短くすることができる。   Further, according to the present invention, a time lag for releasing the solidified plug at the nozzle tip of the injection nozzle (20) is provided before the molten metal is actually injected, and the molding cavity (10) is provided between the time lags. Since the release agent is attached to the material contact surfaces (101, 102), an independent release agent attachment step is not required, the cycle time can be greatly shortened, and the required molding time can be shortened. .

以上、本発明によれば、成形金型の過冷却を防ぎ、成形のサイクルタイムを短縮し、作業環境の悪化を防止できるマグネシウム合金用成形金型への離型剤の付着方法を提供することができる。   As described above, according to the present invention, there is provided a method for attaching a release agent to a magnesium alloy molding die that can prevent overcooling of the molding die, shorten the molding cycle time, and prevent the working environment from deteriorating. Can do.

本発明はマグネシウム合金を成形する各種の成形金型に適用することができる。例えば、マグネシウムチクソモールディングに使用する成形金型や、マグネシウムダイカストに用いる成形金型である。また、成形金型の構成についても特に種類等選ぶことなく適用できる。実施形態例では一つの可動型、一つの固定型で構成された成形金型について記載したが、それぞれが２つ以上の部分型からなるような場合も本発明を適用できる。   The present invention can be applied to various molding dies for molding a magnesium alloy. For example, a molding die used for magnesium thixomolding and a molding die used for magnesium die casting. Also, the configuration of the molding die can be applied without any particular choice. In the embodiment, a molding die composed of one movable mold and one fixed mold has been described, but the present invention can also be applied to a case where each mold is composed of two or more partial molds.

また、離型剤の種類も特に選択することなく本発明を適用できる。例えば、離型剤として油性潤滑剤を用いることができる。また、離型剤を希釈するに当たり、水以外の溶媒を用いることもできる。   Further, the present invention can be applied without particularly selecting the type of release agent. For example, an oil-based lubricant can be used as a release agent. Moreover, in diluting a mold release agent, solvents other than water can also be used.

また、上記材料接触面とは、成形にあたりマグネシウム合金の溶湯が接する部分である。この面には成形品表面を形成する部分の他、溶湯等を導入する材料供給路等も含まれる。また、上記溶湯は完全に溶融した状態にある場合、半溶融の状態にある場合とがある。   The material contact surface is a portion where the molten magnesium alloy comes into contact with the forming. In addition to the portion forming the surface of the molded product, this surface includes a material supply path for introducing molten metal and the like. The molten metal may be in a completely molten state or in a semi-molten state.

上記離型剤の具体的な付着方法としては、離型剤をスプレーで吹きつけて付着させる方法が挙げられる。この場合、単に吹きつけて付着させる方法と、外部から吸引しつつ吹きつけてやる方法とが考えられる。その他、吸引のみで付着させる方法もある。また、離型剤の吹きつけにノズル等を用いる場合、このノズルは成形金型において、固定型と可動型との材料接触面と対面する位置に設けることが好ましい。   A specific method for attaching the release agent includes a method in which the release agent is attached by spraying. In this case, a method of simply spraying and adhering and a method of spraying while sucking from the outside can be considered. In addition, there is a method of attaching only by suction. Further, when a nozzle or the like is used for spraying the release agent, it is preferable that the nozzle is provided at a position facing the material contact surface between the fixed mold and the movable mold in the molding die.

次に、請求項３に記載の発明のように、上記固定型と上記可動型との少なくともいずれか一方には、上記材料接触面に連通する離型剤供給路が設けてあり、該離型剤供給路より上記離型剤を材料接触面に対し供給することが好ましい。これにより、確実に金型外への飛散やたれ落ちを防止して、作業環境の悪化を防止することができる。更に、確実に離型剤が材料接触面以外の箇所に付着することが防止できる。また、離型剤の使用量を最小限にできる。   Next, as in the invention described in claim 3, at least one of the fixed mold and the movable mold is provided with a release agent supply path communicating with the material contact surface. The release agent is preferably supplied to the material contact surface from the agent supply path. As a result, it is possible to reliably prevent the outside of the mold from being scattered and falling off and prevent the work environment from deteriorating. Furthermore, it can prevent reliably that a mold release agent adheres to locations other than a material contact surface. In addition, the amount of release agent used can be minimized.

次に、請求項４に記載の発明のように、上記離型剤供給路には遮断機構が設けてあり、上記遮断機構を開放して上記供給口より上記離型剤を供給し、上記遮断機構を閉鎖してマグネシウム合金の成形を行なうことが好ましい。これにより、成形中にマグネシウム合金の溶湯等が離型剤供給路に侵入することを防止できる。上記遮断機構としては、例えば弁やシャッター等を用いることもできるし、遮断ピンを用いることもできる（実施形態例参照）。   Next, as in the invention described in claim 4, the release agent supply path is provided with a cutoff mechanism, the release mechanism is opened, the release agent is supplied from the supply port, and the cutoff is provided. It is preferable to form the magnesium alloy with the mechanism closed. Thereby, it can prevent that the molten metal of a magnesium alloy penetrate | invades in a mold release agent supply path during shaping | molding. As the blocking mechanism, for example, a valve, a shutter, or the like can be used, or a blocking pin can be used (see the embodiment).

（実施形態例）
本発明の実施形態例にかかるマグネシウム合金用成形金型、及びこの成形金型に対する離型剤の付着方法につき、図１〜図５を用いて説明する。図１に示すごとく、本例の成形金型１は、固定型１１と可動型１２とよりなるマグネシウム合金用の成形金型１である。上記固定型１１には材料接触面１０９に連通する離型剤供給路１３が設けてある。 (Example embodiment)
A magnesium alloy molding die according to an embodiment of the present invention and a method of attaching a release agent to the molding die will be described with reference to FIGS. As shown in FIG. 1, the molding die 1 of this example is a magnesium alloy molding die 1 composed of a fixed die 11 and a movable die 12. The fixed mold 11 is provided with a release agent supply path 13 communicating with the material contact surface 109.

この成形金型１でマグネシウム合金の溶湯を導入するに先だって、上記固定型１１の材料接触面１０１と上記可動型１２の材料接触面１０２とを成形品離型可能な間隔未満に対面配置した状態とする。この状態で上記材料接触面１０１、１０２等に離型剤を付着させる。離型剤は上記離型剤供給路１３から供給される。なお、本例においては、図３（ａ）に示すごとく、特に成形金型１を型締めした状態で離型剤の付着を行なう。   Prior to introducing the molten magnesium alloy in the molding die 1, the material contact surface 101 of the fixed mold 11 and the material contact surface 102 of the movable mold 12 face each other with a distance less than the distance at which the molded product can be released. And In this state, a release agent is adhered to the material contact surfaces 101, 102 and the like. The release agent is supplied from the release agent supply path 13. In this example, as shown in FIG. 3A, the mold release agent is attached particularly in a state where the molding die 1 is clamped.

以下、詳細に説明する。本例にて使用する成形金型１について説明すると、図１に示すごとく、固定型１１と可動型１２とよりなり、両者を型締めすることにより、マグネシウム合金を成形するための成形キャビティ１０が構成される。また、成形キャビティ１０と面する壁面は材料接触面１０１、１０２を形成する。また、図１にかかる符号１０４は成形金型１を型締めした際に固定型１１と可動型１２とが直に当接する分割面である。   Details will be described below. The molding die 1 used in this example will be described. As shown in FIG. 1, the molding die 10 includes a fixed die 11 and a movable die 12, and a mold cavity 10 for molding a magnesium alloy is formed by clamping both of them. Composed. Further, the wall surface facing the molding cavity 10 forms material contact surfaces 101 and 102. Further, reference numeral 104 in FIG. 1 is a divided surface on which the fixed mold 11 and the movable mold 12 come into direct contact when the mold 1 is clamped.

また、上記可動型１２に対し図示を略した電動式の金型駆動機構が設けてあり、上記固定型１１に対し図２、図５に示す矢線方向に対し前進及び後退可能となるよう構成されている。   Further, an electric mold drive mechanism (not shown) is provided for the movable mold 12 so that the fixed mold 11 can be moved forward and backward in the direction of the arrow shown in FIGS. Has been.

上記固定型１１には上記成形キャビティ１０と連通する材料供給路１９が設けてある。この材料供給路１９は固定型１１の外部に設けた射出装置（図示略）から射出シリンダ２１が接続され、該射出シリンダ２１を通じて射出ノズル２０が導入される。そして、上記射出ノズル２０からマグネシウム合金の溶湯が成形キャビティ１０内に供給される（図４参照）。この材料供給路１９と対面する壁面は前述した成形キャビティ１０の壁面と共に材料接触面１０９を形成する。   The fixed mold 11 is provided with a material supply path 19 that communicates with the molding cavity 10. The material supply path 19 is connected to an injection cylinder 21 from an injection device (not shown) provided outside the fixed mold 11, and an injection nozzle 20 is introduced through the injection cylinder 21. Then, a molten magnesium alloy is supplied from the injection nozzle 20 into the molding cavity 10 (see FIG. 4). The wall surface facing the material supply path 19 forms a material contact surface 109 together with the wall surface of the molding cavity 10 described above.

上記固定型１１における材料供給路１９に対し、固定型１１の外部と連通した離型剤供給路１３が連通形成されている。この離型剤供給路１３は、固定型１１の外壁面から材料供給路１９に対し図面の斜方向に延びたＡ部と、材料供給路１９に対し図面の垂直方向に伸びたＢ部とより形成され、Ａ部とＢ部との境界は曲折部１３０となっている。この曲折部１３０に対し、固定型１１の外壁面から延設形成された遮断ピン挿入穴１４０が設けてあり、この穴１４０に対し遮断ピン１４が前進、後退可能（図３〜図５参照）に挿通されている。遮断ピン１４が最大に前進した場合、遮断ピン１４の先端が材料接触面１０９に達して、Ａ部が遮断され、Ｂ部が閉塞される。   A release agent supply path 13 communicating with the outside of the fixed mold 11 is formed in communication with the material supply path 19 in the fixed mold 11. The release agent supply path 13 includes an A part extending from the outer wall surface of the fixed mold 11 to the material supply path 19 in the oblique direction of the drawing and a B part extending in the direction perpendicular to the material supply path 19. The boundary between the A part and the B part is a bent part 130. The bent portion 130 is provided with a blocking pin insertion hole 140 extending from the outer wall surface of the fixed mold 11, and the blocking pin 14 can move forward and backward with respect to the hole 140 (see FIGS. 3 to 5). Is inserted. When the blocking pin 14 is advanced to the maximum, the tip of the blocking pin 14 reaches the material contact surface 109, the A part is blocked, and the B part is closed.

次に、上記成形金型１を用いたマグネシウム合金の成形について説明する。本例にかかる成形金型１を用いた成形のプロセスを時系列に列挙すると、（１）成形金型１の型締め、（２）射出ノズル２０前進、（３）溶湯射出、（４）成形キャビティ１０の充填完了、（５）溶湯固化、（６）射出ノズル２０後退、（７）成形金型１の型開き、（８）成形品３取出しである。上記（１）〜（８）が成形の１サイクルとなる。   Next, the shaping | molding of the magnesium alloy using the said shaping | molding die 1 is demonstrated. The molding processes using the molding die 1 according to this example are listed in chronological order: (1) clamping of the molding die 1, (2) advancement of the injection nozzle 20, (3) molten metal injection, (4) molding. Completion of filling of the cavity 10, (5) solidification of the molten metal, (6) retreat of the injection nozzle 20, (7) mold opening of the molding die 1, and (8) removal of the molded product 3. Said (1)-(8) becomes 1 cycle of shaping | molding.

図２に示すごとく、可動型１２を固定型１１に対し当接させて、成形金型１を型締めする。続いて、図３（ａ）に示すごとく、射出ノズル２０を材料供給路１９の入り口となるＭの位置まで前進させ、材料供給路１９を封止する。続いて、離型剤供給路１３に対し離型剤３１の噴射ノズル（図示略）を導入、噴射ノズル、離型剤供給路１３を通じて成形キャビティ１０及び材料供給路１９の壁面よりなる材料接触面１０１、１０２、１０９に対し離型剤３１を噴射する。図３（ｂ）に示すごとく、この噴射により材料接触面１０１、１０２、１０９に離型剤３１の潤滑被膜３２が形成された。   As shown in FIG. 2, the movable mold 12 is brought into contact with the fixed mold 11 and the molding die 1 is clamped. Subsequently, as shown in FIG. 3A, the injection nozzle 20 is advanced to a position M that becomes the entrance of the material supply path 19, and the material supply path 19 is sealed. Subsequently, an injection nozzle (not shown) of the release agent 31 is introduced into the release agent supply path 13, and the material contact surface formed by the walls of the molding cavity 10 and the material supply path 19 through the injection nozzle and the release agent supply path 13. The release agent 31 is sprayed on the 101, 102, and 109. As shown in FIG. 3B, the lubricant film 32 of the release agent 31 was formed on the material contact surfaces 101, 102, and 109 by this injection.

この時用いた離型剤３１は、油性離型剤で、薄めずに原液のままで使用した。また、噴射の圧力は０．４ＭＰａ、噴射は５秒間、離型剤の使用量は０．５ｃｃ／ショットで行なった。所定時間の噴射を終えた後、噴射ノズルを成形金型１の外部へと後退させると共に、図４に示すごとく、遮断ピン１４を前進させ、Ａ部を遮断する。   The mold release agent 31 used at this time was an oil-based mold release agent and was used as it was without diluting. Further, the injection pressure was 0.4 MPa, the injection was performed for 5 seconds, and the amount of the release agent used was 0.5 cc / shot. After completing the injection for a predetermined time, the injection nozzle is retracted to the outside of the molding die 1 and the blocking pin 14 is advanced as shown in FIG.

ところで、射出ノズル２０を上記Ｍの位置まで前進させた後、実際に溶湯射出を行なうまでに、ノズル先端の固化したプラグをリリースしやすくするためにタイムラグを設ける。上記離型剤３１の噴射はこのタイムラグ内に行なった。   By the way, a time lag is provided to facilitate the release of the solidified plug at the nozzle tip after the injection nozzle 20 is advanced to the position M and before the molten metal is actually injected. The release agent 31 was injected within this time lag.

続いて、図４に示すごとく、上記射出ノズル２０からマグネシウム合金の溶湯３３を射出、成形キャビティ１０内を必要量の溶湯で充填する。充填後、成形金型１を冷却し、溶湯を固化させ、射出ノズル２０を後退させる。そして、図５に示すごとく、金型駆動機構により可動型１２を固定型１１より離脱させ、型開きを行なう。そして、マグネシウム合金成形品３を取出す。その後、図２に示すごとく、再び型締めをして、次の成形のサイクルに入る。   Subsequently, as shown in FIG. 4, a molten magnesium alloy 33 is injected from the injection nozzle 20, and the molding cavity 10 is filled with a required amount of molten metal. After filling, the molding die 1 is cooled, the molten metal is solidified, and the injection nozzle 20 is retracted. Then, as shown in FIG. 5, the movable mold 12 is detached from the fixed mold 11 by the mold driving mechanism, and the mold is opened. Then, the magnesium alloy molded product 3 is taken out. Thereafter, as shown in FIG. 2, the mold is clamped again and the next molding cycle is started.

次に本例の作用効果について説明する。本例においては、型締めした状態で固定型１１と可動型１２とを配置し、固定型１１に設けた離型剤供給路１３から成形キャビティ１０及び材料供給路１９の壁面よりなる材料接触面１０１、１０２、１０９に対し離型剤３１を噴射する。型締めが行われた後に離型剤３１をスプレーしているため、固定型１１及び可動型１２の分割面１０４は既に当接状態にあって、ここに離型剤が付着することはない。また、型締めされているため、成形キャビティ１０や材料供給路１９は外部と切り離され閉塞された状態にある。従って、余計な箇所への離型剤３１の付着や外部への離型剤３１の飛散を防止できる。   Next, the effect of this example is demonstrated. In this example, the fixed mold 11 and the movable mold 12 are arranged in a state where the mold is clamped, and the material contact surface formed by the wall surfaces of the molding cavity 10 and the material supply path 19 from the release agent supply path 13 provided in the fixed mold 11. The release agent 31 is sprayed on the 101, 102, and 109. Since the mold release agent 31 is sprayed after the mold clamping is performed, the dividing surfaces 104 of the fixed mold 11 and the movable mold 12 are already in contact with each other, and the mold release agent does not adhere thereto. Moreover, since the mold is clamped, the molding cavity 10 and the material supply path 19 are separated from the outside and closed. Accordingly, it is possible to prevent the release agent 31 from adhering to an extra portion and the release agent 31 from being scattered to the outside.

従って、本例にかかる方法では離型剤３１が無駄に使われず、離型剤３１を希釈する水分をなくして原液そのものを使用することができる。そのため、成形金型１への離型剤付着にともなう温度低下を防止でき、熱容量の小さいマグネシウム合金に対する優れた湯まわり性を確保することができる。また、湯まわり性向上から、成形品３の外観品質を高め、不良率を減らすことができる。   Therefore, in the method according to this example, the release agent 31 is not wasted, and the stock solution itself can be used without the water that dilutes the release agent 31. Therefore, the temperature drop accompanying the mold release agent adhering to the molding die 1 can be prevented, and excellent hot water performance for a magnesium alloy having a small heat capacity can be secured. Moreover, the appearance quality of the molded product 3 can be improved and the defect rate can be reduced due to the improvement of the hot water supply property.

更に、型締めした状態で離型剤３１を塗布しているため、成形金型１外への飛散やたれ落ち等が発生し難く、作業環境の悪化も生じ難い。成形金型１が大きく開いた状態にないため、離型剤３１が材料接触面１０１、１０２、１０９以外に付着することも生じ難い。従って、離型剤３１付着に要する時間も短くて済み、付着させた離型剤３１の乾燥時間も同様に短くて済む。   Furthermore, since the mold release agent 31 is applied in a state in which the mold is clamped, it is difficult for the mold to scatter or fall off the molding die 1, and the work environment is hardly deteriorated. Since the molding die 1 is not in a wide open state, it is difficult for the release agent 31 to adhere to other than the material contact surfaces 101, 102, and 109. Therefore, the time required for attaching the release agent 31 is short, and the drying time of the attached release agent 31 is also short.

更に、本例では離型剤３１の付着を独立した工程として設けずに、射出ノズル２前進後、実際に溶湯射出を行なうまでのタイムラグ内に行なっている。このため、成形のサイクルタイムを短縮できる。従来は、図６に示すごとく、型開きして成形品を取出した後、改めて成形金型９をより大きく開いた状態となし、その上で離型剤９３０を材料供給面９００にスプレーし、その後、再び型締めして、次の成形サイクルに入っていた。   Further, in this example, the adhesion of the release agent 31 is not provided as an independent process, but is performed within the time lag until the molten metal is actually injected after the injection nozzle 2 moves forward. For this reason, the cycle time of molding can be shortened. Conventionally, as shown in FIG. 6, after the mold is opened and the molded product is taken out, the molding die 9 is opened again, and then the release agent 930 is sprayed onto the material supply surface 900, Thereafter, the mold was clamped again and the next molding cycle was started.

ここに次のような試験を行なって、従来方法と本例とを比較する。本例にかかる離型剤供給路を設けた成形金型を準備し、上述した方法でマグネシウム合金の成形を行なった。これに対し同金型で離型剤供給路を使用せず、従来の、型開きして成形品を取出し、離型剤をスプレー、その後型締め、という方法でマグネシウム合金の成形を行なった。   Here, the following test is performed to compare the conventional method with this example. A molding die provided with a release agent supply path according to this example was prepared, and a magnesium alloy was molded by the method described above. On the other hand, the magnesium alloy was molded by the conventional method of opening the mold by taking out the molded product by using the same mold, taking out the molded product, spraying the mold release agent, and then clamping the mold.

その結果、本例にかかる方法は１サイクルタイムが２９秒であった。従来方法は１サイクルタイムに４４秒必要であった。本例と従来方法との差の１５秒は、成形金型を大きく開いた状態で離型剤をスプレーするに要した時間である。本例は射出ノズル２前進後から溶湯の射出を行なうまでのタイムラグ内に離型剤をスプレーしているため、独立した離型剤付着工程が必要ない。このように、本例によれば大きくサイクルタイムを短縮できて、成形所要時間を短くすることができる。   As a result, in the method according to this example, one cycle time was 29 seconds. The conventional method required 44 seconds per cycle time. The difference of 15 seconds between this example and the conventional method is the time required for spraying the release agent with the molding die opened widely. In this example, since the release agent is sprayed in the time lag from the advance of the injection nozzle 2 to the injection of the molten metal, an independent release agent attaching step is not necessary. Thus, according to the present example, the cycle time can be greatly shortened, and the required molding time can be shortened.

以上、本例によれば、成形金型の過冷却を防ぎ、成形のサイクルタイムを短縮し、作業環境の悪化を防止できるマグネシウム合金用成形金型への離型剤の付着方法及び成形金型を提供することができる。   As described above, according to this example, the method for attaching a release agent to a magnesium alloy molding die, which can prevent overcooling of the molding die, shorten the molding cycle time, and prevent deterioration of the working environment, and the molding die Can be provided.

なお、本例では完全に型締めしてから離型剤の付着を行なったが、型を少しだけ開いた状態で離型剤を付着させることもできるし、可動型と固定型との間の隙間から離型剤の噴射することも可能である。   In this example, the mold release agent was attached after the mold was completely clamped. However, the mold release agent can be attached with the mold slightly opened, or between the movable mold and the fixed mold. It is also possible to inject the release agent from the gap.

実施形態例における、成形金型の説明図。Explanatory drawing of the shaping die in the embodiment. 実施形態例における、成形金型を型締めした状態の説明図。Explanatory drawing of the state which clamped the shaping die in the embodiment. 実施形態例における、（ａ）型締めした成形金型の材料接触面に対し離型剤を付着させる状態の説明図、（ｂ）材料接触面に形成された潤滑被膜の説明図。In the example of embodiment, (a) Explanatory drawing of the state which makes a mold release agent adhere with respect to the material contact surface of the clamping mold, (b) Explanatory drawing of the lubricating film formed in the material contact surface. 実施形態例における、成形キャビティに射出ノズルから溶湯を射出する状態の説明図。Explanatory drawing of the state which injects a molten metal from the injection nozzle to the shaping | molding cavity in the example of embodiment. 実施形態例における、型開きして成形品を取出す状態の説明図。Explanatory drawing of the state which opens a mold and takes out a molded article in the example of an embodiment. 実施形態例における、従来方法での離型剤の付着についての説明図。An explanatory view about adhesion of a mold release agent by a conventional method in an example of an embodiment.

符号の説明Explanation of symbols

１．．．成形金型、
１０．．．成形キャビティ、
１０１、１０２、１０９．．．材料接触面、
１３．．．離型剤供給路、
３．．．成形品、
３１．．．離型剤、 1. . . Mold,
10. . . Molding cavity,
101, 102, 109. . . Material contact surface,
13. . . Release agent supply path,
3. . . Molding,
31. . . Release agent,

Claims (3)

固定型（１１）と可動型（１２）と、前記固定型と前記可動型により形成される成形キャビティ（１０）と、前記成形キャビティに射出ノズル（２０）よりマグネシウム合金の溶湯を射出して成形品を成形するマグネシウム合金用成形金型において、前記固定型（１１）と前記可動型（１２）とを型締め状態とするとともに、実際に溶湯射出を行うまでに、前記射出ノズル（２０）のノズル先端の固化したプラグをリリースするためのタイムラグを設け、当該タイムラグの間に前記成形キャビティ（１０）の材料接触面（１０１、１０２）に対し離型剤を付着させることを特徴とするマグネシウム合金用成形金型への離型剤の付着方法。 A fixed mold (11), a movable mold (12), a molding cavity (10) formed by the fixed mold and the movable mold, and a molten magnesium alloy is injected into the molding cavity from an injection nozzle (20). In the magnesium alloy molding die for molding a product, the fixed mold (11) and the movable mold (12) are clamped and before the molten metal is actually injected, the injection nozzle (20) A magnesium alloy characterized by providing a time lag for releasing the solidified plug at the tip of the nozzle, and attaching a release agent to the material contact surfaces (101, 102) of the molding cavity (10) during the time lag Method of attaching release agent to molding mold 請求項１において、上記固定型と上記可動型との少なくともいずれか一方には、上記材料接触面に連通する離型剤供給路が設けてあり、該離型剤供給路より上記離型剤を上記材料接触面に対し供給することを特徴とするマグネシウム合金用成形金型への離型剤の付着方法。 The release agent supply path that communicates with the material contact surface is provided in at least one of the fixed mold and the movable mold according to claim 1, and the release agent is supplied from the release agent supply path. A method for adhering a release agent to a magnesium alloy molding die, wherein the material contact surface is supplied. 請求項２において、上記離型剤供給路には遮断機構が設けてあり、上記遮断機構を開放して上記供給口より上記離型剤を供給し、上記遮断機構を閉鎖してマグネシウム合金の成形を行うことを特徴とする離型剤の付着方法。
3. The magnesium alloy molding according to claim 2, wherein the release agent supply path is provided with a blocking mechanism, the blocking mechanism is opened, the release agent is supplied from the supply port, and the blocking mechanism is closed. A method for attaching a release agent, characterized in that
JP2005304758A 2005-10-19 2005-10-19 Adhesion method of release agent to molding die for magnesium alloy Expired - Lifetime JP4193834B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005304758A JP4193834B2 (en) 2005-10-19 2005-10-19 Adhesion method of release agent to molding die for magnesium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005304758A JP4193834B2 (en) 2005-10-19 2005-10-19 Adhesion method of release agent to molding die for magnesium alloy

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2000231823A Division JP3855613B2 (en) 2000-07-31 2000-07-31 Method of attaching release agent to molding die for magnesium alloy and molding die

Publications (2)

Publication Number Publication Date
JP2006035318A JP2006035318A (en) 2006-02-09
JP4193834B2 true JP4193834B2 (en) 2008-12-10

Family

ID=35900853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005304758A Expired - Lifetime JP4193834B2 (en) 2005-10-19 2005-10-19 Adhesion method of release agent to molding die for magnesium alloy

Country Status (1)

Country Link
JP (1) JP4193834B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5121661B2 (en) * 2008-10-09 2013-01-16 日華化学株式会社 Die casting method

Also Published As

Publication number Publication date
JP2006035318A (en) 2006-02-09

Similar Documents

Publication Publication Date Title
US7331375B2 (en) Metal molding method and apparatus
JP2504099B2 (en) Die casting method and die casting apparatus
US4762163A (en) Die casting arrangement
JP6131106B2 (en) Coating agent supply device for die casting machine
JP4193834B2 (en) Adhesion method of release agent to molding die for magnesium alloy
JP3855613B2 (en) Method of attaching release agent to molding die for magnesium alloy and molding die
JP5102121B2 (en) Method of applying release agent in metal product molding die and metal product molding die
JP2700032B2 (en) Mold casting method
JP2005329446A (en) Metallic mold structure with core pin
JP3558020B2 (en) Method of attaching release agent to molding die and molding system
JPH10277720A (en) Die for die casting
JP4235025B2 (en) Chixso mold or die-casting type mold release agent coating system
JP2003145258A (en) Method and apparatus for molding metal
JP4011507B2 (en) Injection sleeve lubrication apparatus and injection sleeve lubrication method for horizontal injection die casting machine
JP2002113564A (en) Metallic mold for forming low melting point metal product
JP3725395B2 (en) Spraying method with spray head for casting
KR20090020080A (en) Die casting method
JP3788739B2 (en) Metal injection mold and metal injection molding device
KR100756940B1 (en) High pressure casting method
JPH0318980B2 (en)
JP2010075974A (en) Casting die and casting method
JP2000301310A (en) Metallic mold for casting
KR20050013651A (en) Die cast mold
JP2024059522A (en) Manufacturing method for die casting mold parts
JP2003225751A (en) Die for die casting

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070502

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080902

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080915

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4193834

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111003

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121003

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121003

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131003

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term