JP2010234433A - Cooling mechanism of machine base sliding part in mold clamping device - Google Patents

Cooling mechanism of machine base sliding part in mold clamping device Download PDF

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JP2010234433A
JP2010234433A JP2009087227A JP2009087227A JP2010234433A JP 2010234433 A JP2010234433 A JP 2010234433A JP 2009087227 A JP2009087227 A JP 2009087227A JP 2009087227 A JP2009087227 A JP 2009087227A JP 2010234433 A JP2010234433 A JP 2010234433A
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cooling
mold clamping
cooling mechanism
clamping device
base
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JP5396973B2 (en
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Koji Ogawa
浩司 尾川
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Ube Machinery Corp Ltd
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Ube Machinery Corp Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling mechanism of a machine base sliding part in a mold clamping device in which the sliding part is forcibly cooled, degradation of lubricating oil is suppressed by suppressing a rise in temperature, and an excellent lubricating state is achieved. <P>SOLUTION: In a mold clamping device 20, a cooling mechanism 21 for cooling the sliding part on a base 2 in which a movable platen 4 is operated to slide, is formed with: two or more cooling openings 22 formed by penetrating to cut at each suitable distance; and a cooling hose 24 connected to each of the cooling openings 22 via a joint 23 in both sides of a member 2a near the sliding part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、型締装置におけるマシンベース摺動部の冷却機構に関し、特には、大型の型締装置において、高速度で往復動する可動部の潤滑性が損なわないようにしたものである。   The present invention relates to a cooling mechanism for a machine base sliding portion in a mold clamping device, and in particular, in a large mold clamping device, the lubricity of a movable part that reciprocates at a high speed is not impaired.

近年、射出成形装置等、大型の成形機械においては、成形製品の製造能力の向上を図るため、高速化が図られている。
ところで、一般に大型成形機械の高速化によって課題となるものとして、可動部の潤滑の問題を挙げることができる。 In recent years, large-scale molding machines such as injection molding apparatuses have been increased in speed in order to improve the production capacity of molded products.
By the way, the problem of lubrication of a movable part can be mentioned as a problem which generally becomes a problem by increasing the speed of a large molding machine.

例えば、特許文献１で開示される射出成形機の型締装置では、可動盤はベッド上のレールに対して、ボールスライダを介して支持する構成としている。   For example, in the mold clamping device of an injection molding machine disclosed in Patent Document 1, the movable platen is configured to support the rail on the bed via a ball slider.

しかしながら、このような構成では、摩擦係数が小さすぎるため、型開動作中の減速時において、減速距離を長くとる必要があり、開閉時間が長くなってしまう。また、停止制御が困難で、停止位置がばらついてしまう。その上、ボールスライダは高価であり、コスト高を招く。   However, in such a configuration, since the friction coefficient is too small, it is necessary to increase the deceleration distance during deceleration during the mold opening operation, and the opening / closing time becomes long. In addition, stop control is difficult, and the stop position varies. In addition, the ball slider is expensive and incurs high costs.

一方、特許文献２で開示される射出成形機の潤滑装置では、潤滑油を循環し、回路の途中に冷却装置を組み込み、温度上昇を抑制するようにしている。   On the other hand, in the lubricating device for an injection molding machine disclosed in Patent Document 2, lubricating oil is circulated and a cooling device is incorporated in the middle of the circuit so as to suppress the temperature rise.

しかしながら、可動プラテンの動作ストロークは長いため、マシンベースの油受けに溜った潤滑油を回収する効率が悪く、循環することは困難である。   However, since the operation stroke of the movable platen is long, the efficiency of collecting the lubricating oil accumulated in the machine base oil receiver is poor, and it is difficult to circulate.

特開昭６１−６０２５３号公報Japanese Patent Laid-Open No. 61-60253 特開２００３−２２０６３８号公報JP 2003-220638 A

さらに、射出成形装置の型締装置の可動プラテン盤の潤滑手段として、図６に示すトグル式電動型締装置１において、進退動可能に配設した可動盤４を基盤２上で円滑に往復動できるようにコーベルライナＣLを用いている。
なお、トグル式電動型締装置１は、基盤２上に固設された固定盤３と、固定盤３と対向して、基盤２に対して進退動可能に配設した可動盤４と、リンクハウジング５とを備え、可動盤４とリンクハウジング５との間にトグル機構７を設けて、固定盤３と可動盤４間に取り付けた、固定金型６ａ及び可動金型６ｂとからなる金型６を、型締モータ８を駆動してトグル機構７を作動させ、可動盤４を固定盤３側に前進させて型締めを行う構成としている。
コーベルライナＣLは、表面を滑らかに仕上げた鋼製の帯状の薄板であり、張力をかけられた状態で両端が基盤２上に固定されている。（なお、かかるコーベルライナＣLを用いず、基盤２上を精密な平板加工しただけのも存在する。） Further, as a lubricating means for the movable platen plate of the mold clamping device of the injection molding device, the movable platen 4 movably disposed in the toggle type electric mold clamping device 1 shown in FIG. Kobel liner CL is used so that it can do.
The toggle type electric clamping device 1 includes a fixed platen 3 fixed on the base plate 2, a movable platen 4 facing the fixed platen 3 so as to be movable back and forth with respect to the base plate 2, and a link. A mold including a housing 5, a toggle mechanism 7 provided between the movable platen 4 and the link housing 5, and a fixed die 6 a and a movable die 6 b attached between the fixed platen 3 and the movable platen 4. 6 is configured such that the mold clamping motor 8 is driven to operate the toggle mechanism 7, and the movable platen 4 is advanced to the fixed platen 3 side to perform mold clamping.
The corbel liner CL is a steel strip-like thin plate having a smooth surface, and both ends are fixed on the substrate 2 in a state where tension is applied. (In addition, there is a case where the above-described corbel liner CL is not used and the base plate 2 is simply processed into a flat plate.)

コーベルライナＣLは、図７に示すように可動盤４と基盤２間において、可動プラテン高さ調整用のガイドシュー９、潤滑油を導く油溝ｍが形成されたライナ１０を介して介装されている。この場合、ライナ１０における油溝ｍは、コーベルライナＣLと接する下面（底面）に刻設され（図８参照）、ガイドシュー９を貫いて形成された潤滑油のガイド通路１１、ライナ１０に形成した貫通路１２を通じて給油されるようになっている。なお、ガイドシュー９のガイド通路１１には潤滑ホースＨが継手１３を介して接続され、外部から潤滑油が供給されるようになっている。
さらに、かかる潤滑油の排出側として、コーベルライナＣLを載置する基盤２側に、油受け１４が設けられている。 As shown in FIG. 7, the corbel liner CL is interposed between the movable platen 4 and the base 2 via a guide shoe 9 for adjusting the height of the movable platen and a liner 10 in which an oil groove m for guiding lubricating oil is formed. ing. In this case, the oil groove m in the liner 10 is engraved on the lower surface (bottom surface) in contact with the corbel liner CL (see FIG. 8), and is formed in the lubricant guide passage 11 and the liner 10 formed through the guide shoe 9. The fuel is supplied through the through passage 12. A lubrication hose H is connected to the guide passage 11 of the guide shoe 9 via a joint 13 so that lubricating oil is supplied from the outside.
Further, an oil receiver 14 is provided on the base 2 side on which the corbel liner CL is placed as a discharge side of the lubricating oil.

以上のようなコーベルライナＣLと潤滑油とを用いた潤滑構造の存在下に、可動プラテンを基盤２上で往復動させ、型締め型開きを行ってきた（図９参照）。   In the presence of the lubricating structure using the Kobel liner CL and the lubricating oil as described above, the movable platen is reciprocated on the base 2 to open the mold clamping mold (see FIG. 9).

しかしながら、コーベルライナＣLと潤滑油とを用いた潤滑構造の存在によっても、ハイサイクル運転で、可動プラテンを高速度で往復動させると、冷却能力が不充分となり、コーベルライナＣLと基盤２との摺動面は発熱し、この発熱は自然放熱だけでは対処できない状態となる。
また、かかる発熱下（８０℃以上）で、連続運転がなされると潤滑油は劣化して粘性を失い、摺動時の摩擦が増大するので、コーベルライナＣLに以下のような悪影響を及ぼす虞がある。すなわち、
（１）コーベルライナの焼付きによる機械故障
（２）コーベルライナの折損による機械故障
（３）ライナ類の異常摩耗による機械寿命短命化
本発明は、以上のような課題を改善するために提案されたものであって、マシンベースとライナとの摺動部分を強制的に冷却することで、コーベルライナの温度上昇を抑制して潤滑油の劣化を抑制し、潤滑油の劣化に起因する機械故障を防止し、併せて機械寿命の向上も図った、型締装置におけるマシンベース摺動部の冷却機構を提供することを目的とする。 However, due to the presence of a lubrication structure using Kobel liner CL and lubricating oil, if the movable platen is reciprocated at high speed in high cycle operation, the cooling capacity becomes insufficient, and the relationship between the Kobel liner CL and the base 2 The sliding surface generates heat, and this heat generation cannot be dealt with only by natural heat dissipation.
In addition, if continuous operation is performed under such heat generation (80 ° C. or higher), the lubricating oil deteriorates and loses its viscosity, and the friction during sliding increases. Therefore, the following adverse effects may be exerted on the Kobel liner CL. There is. That is,
(1) Mechanical failure due to seizure of corbel liner (2) Mechanical failure due to breakage of corbel liner (3) Shortening of mechanical life due to abnormal wear of liners The present invention has been proposed to improve the above problems. Therefore, the sliding part between the machine base and the liner is forcibly cooled, so that the temperature rise of the corbel liner is suppressed to suppress the deterioration of the lubricating oil, and the machine failure caused by the deterioration of the lubricating oil. An object of the present invention is to provide a cooling mechanism for a machine base sliding portion in a mold clamping device which prevents the above-mentioned problem and improves the machine life.

上記の課題を解決するために、請求項１に記載の発明では、ダイカストマシンまたは射出成形機の型締装置（２０）において、可動プラテン（４）が摺動動作する基盤（２）上の摺動箇所を冷却する冷却機構（２１）であって、基盤（２）上の摺動箇所近傍の部材に、冷却媒体を流通することによって冷却することを特徴とする。   In order to solve the above problems, in the invention described in claim 1, in the mold clamping device (20) of the die casting machine or the injection molding machine, the sliding on the base (2) on which the movable platen (4) slides is performed. A cooling mechanism (21) for cooling a moving part, wherein cooling is performed by circulating a cooling medium to a member in the vicinity of a sliding part on the base (2).

これにより、可動プラテン（４）が摺動動作することで発熱する摺動箇所は、冷却媒体との熱交換により、温度の上昇が抑えられる。   Thereby, the rise in temperature of the sliding portion that generates heat by the sliding movement of the movable platen (4) is suppressed by heat exchange with the cooling medium.

請求項２に記載の発明では、前記冷却媒体は、水であることを特徴とする。   The invention according to claim 2 is characterized in that the cooling medium is water.

これにより、冷却設備としてのコストを抑制することができる。   Thereby, the cost as a cooling facility can be suppressed.

さらに、請求項３に記載の発明では、冷却機構（２１）は、冷却ファン（３０）により基盤（２）上の摺動箇所に向けて送風することによって冷却することを特徴とする。   Further, the invention according to claim 3 is characterized in that the cooling mechanism (21) is cooled by blowing air toward the sliding portion on the base (2) by the cooling fan (30).

これにより、水などの冷却媒体を用いた冷却手段とは異なり、冷却設備として、媒体流通用の配管設備が不要であり、設備の簡素化を図ることができる。   Accordingly, unlike cooling means using a cooling medium such as water, piping equipment for medium distribution is not required as the cooling equipment, and the equipment can be simplified.

上記の本発明の説明において、カッコ（）内の記号又は数字は、以下に示す実施の形態との対応を示すために添付される。   In the above description of the present invention, symbols or numbers in parentheses () are attached to show correspondence with the embodiments described below.

本発明によれば、摺動部分を強制的に冷却することで、潤滑油温度を所定温度以下に抑えて潤滑油の劣化を抑えることができ、良好な潤滑状態を維持することができる。これにより、
（１）コーベルライナの焼付き防止を図り、機械故障を未然に防止することができる。
（２）コーベルライナの折損を防止し、機械故障を防止することができる。
（３）ライナ類の異常摩耗を防止することができ、機械寿命を延伸することができる。 According to the present invention, by forcibly cooling the sliding portion, the lubricating oil temperature can be suppressed to a predetermined temperature or less, deterioration of the lubricating oil can be suppressed, and a good lubricating state can be maintained. This
(1) It is possible to prevent seizure of the corbel liner and prevent machine failure.
(2) Breakage of the corbel liner can be prevented and machine failure can be prevented.
(3) Abnormal wear of liners can be prevented, and the mechanical life can be extended.

本発明にかかる冷却機構の第１実施形態を備えた、型締装置の一例を示す模式的な側面説明図である。It is typical side surface explanatory drawing which shows an example of the mold clamping apparatus provided with 1st Embodiment of the cooling mechanism concerning this invention. 図１に示す型締め装置における冷却機構の、拡大的な要部側面説明図である。It is an expanded principal part side surface explanatory view of the cooling mechanism in the mold clamping apparatus shown in FIG. 図２に示す冷却機構を配設した、摺動箇所の模式的な平面説明図である。It is typical plane explanatory drawing of the sliding location which arrange | positioned the cooling mechanism shown in FIG. 図２に示す冷却機構を配設した、摺動箇所の模式的な別側面説明図である。FIG. 3 is a schematic side view of another sliding portion where the cooling mechanism shown in FIG. 2 is disposed. 本発明にかかる冷却機構の第２実施形態を示す、型締装置における摺動箇所の模式的な側面説明図である。It is typical side surface explanatory drawing of the sliding location in the mold clamping apparatus which shows 2nd Embodiment of the cooling mechanism concerning this invention. 従来の型締装置の一例を示す模式的な側面説明図である。It is typical side surface explanatory drawing which shows an example of the conventional mold clamping apparatus. 図６に示す型締装置の可動盤を金型取付面側から見た、側面説明図である。It is side surface explanatory drawing which looked at the movable board of the mold clamping apparatus shown in FIG. 6 from the metal mold | die attachment surface side. （ａ）は図６に示す型締装置の摺動箇所におけるライナの、側面説明図であり、（ｂ）はライナの平面説明図である。(A) is side surface explanatory drawing of the liner in the sliding location of the mold clamping apparatus shown in FIG. 6, (b) is plane explanatory drawing of a liner. 図６に示す型締装置の摺動箇所を拡大的に示した、要部側面説明図である。It is principal part side explanatory drawing which expanded and showed the sliding location of the mold clamping apparatus shown in FIG.

（第１実施形態）
図１に、本発明にかかる冷却機構を備えた射出成形装置における型締装置の一例を示す。なお、図１で示す型締装置２０には、図６で示した型締装置１と同構成のものを用いており、同符号を付して、本発明に直接関係のない各構成要素についての説明は省略する。
かかる型締装置２０において、可動盤４、リンクハウジング５をコーベルライナＣLを介して摺動可能に支える基盤２には、冷却機構２１が設けられている。 (First embodiment)
FIG. 1 shows an example of a mold clamping device in an injection molding apparatus provided with a cooling mechanism according to the present invention. The mold clamping device 20 shown in FIG. 1 has the same configuration as that of the mold clamping device 1 shown in FIG. 6, and the same reference numerals are given to the components not directly related to the present invention. Description of is omitted.
In such a mold clamping device 20, a cooling mechanism 21 is provided on the base 2 that slidably supports the movable platen 4 and the link housing 5 via a corbel liner CL.

冷却機構２１は、例えば図２に示すように、基盤２上のコーベルライナＣLが敷設された摺動箇所近傍の部材２ａに、適宜距離ごと切るように貫通させて形成した複数の冷却穴２２と（図３、図４参照）、摺動箇所近傍の部材２ａの両側面において各冷却穴２２の開口を、継手２３を介して連結した冷却ホース２４とで構成されている。
これにより、冷却ホース２４を通じて、摺動箇所近傍の部材２ａを横切る冷却穴２２に対し、冷却水を流すことができ、基盤２上のコーベルライナＣLが敷設された摺動箇所における発熱を抑制することができる。また、冷却ホース２４は、ホースに限らず、鋼製や銅製のパイプに置き換えることも可能である。 For example, as shown in FIG. 2, the cooling mechanism 21 includes a plurality of cooling holes 22 formed by penetrating through a member 2 a in the vicinity of the sliding portion where the corbel liner CL on the base 2 is laid so as to be cut at an appropriate distance. (Refer FIG. 3, FIG. 4) and the cooling hose 24 which connected the opening of each cooling hole 22 via the joint 23 in the both sides | surfaces of the member 2a near a sliding location.
Thereby, the cooling water can be flowed through the cooling hose 24 to the cooling hole 22 crossing the member 2a in the vicinity of the sliding portion, and the heat generation at the sliding portion where the corbel liner CL on the base 2 is laid is suppressed. be able to. The cooling hose 24 is not limited to a hose, and can be replaced with a steel or copper pipe.

なお、上述の冷却機構２１の構成は一例であって、摺動部の発熱状況に応じて適宜構成することができる。例えば、図示は省略するが、冷却ホース２４などを介さず、基盤２上のコーベルライナＣLが敷設された摺動箇所に沿って、摺動箇所近傍の部材２ａの長手方向に貫通する冷却穴を形成することも可能である。これにより、摺動箇所近傍の部材２ａ内の冷却穴を通過する冷却水によって、より効果的に熱交換作用がなされ、摺動箇所を強制的に冷却することができる。   In addition, the structure of the above-mentioned cooling mechanism 21 is an example, Comprising: It can comprise suitably according to the heat_generation | fever condition of a sliding part. For example, although not shown, a cooling hole penetrating in the longitudinal direction of the member 2a in the vicinity of the sliding position is provided along the sliding position where the corbel liner CL on the base 2 is laid without using the cooling hose 24 or the like. It is also possible to form. Thereby, the heat exchange action is more effectively performed by the cooling water passing through the cooling hole in the member 2a in the vicinity of the sliding portion, and the sliding portion can be forcibly cooled.

（第２実施形態）
図５は、型締装置２０における冷却機構２１の第２実施形態を示す。
この第２実施形態にかかる冷却機構２１では、基盤２上のコーベルライナＣLが敷設された摺動箇所に向けて、基盤２両側面に配設した冷却ファン３０を設けている。この場合、冷却ファン３０は、冷却風がコーベルライナＣLが敷設された摺動箇所に向けて、斜め上方から、略３０度ほど下向きになるように、摺動箇所近傍の部材２ａにおいて支持部材３１で支持されている。
また、冷却ファン３０は、コーベルライナＣLが敷設された摺動箇所に冷却風を効率よく当てるために、摺動箇所の摺動方向に沿うように複数、冷却ファン３０を設置することが望ましい。
以上のような冷却ファン３０の冷却風を、コーベルライナＣLが敷設された摺動箇所に与えることで、周囲及び摺動箇所の温度上昇を抑制するようにしている。 (Second Embodiment)
FIG. 5 shows a second embodiment of the cooling mechanism 21 in the mold clamping device 20.
In the cooling mechanism 21 according to the second embodiment, the cooling fans 30 disposed on both side surfaces of the base plate 2 are provided toward the sliding portion where the corbel liner CL on the base plate 2 is laid. In this case, the cooling fan 30 supports the support member 31 in the member 2a in the vicinity of the sliding portion so that the cooling air is directed downward by about 30 degrees from obliquely upward toward the sliding portion where the corbel liner CL is laid. It is supported by.
In addition, it is desirable that a plurality of cooling fans 30 be installed along the sliding direction of the sliding portion in order to efficiently apply the cooling air to the sliding portion where the corbel liner CL is laid.
By providing the cooling air of the cooling fan 30 as described above to the sliding portion where the corbel liner CL is laid, the temperature rise in the surroundings and the sliding portion is suppressed.

第２実施形態のような冷却ファン３０によれば、水などの冷却媒体を用いた冷却手段とは異なり、冷却設備として、媒体流通用の配管設備が不要であり、設備の簡素化を図ることができる。   According to the cooling fan 30 as in the second embodiment, unlike the cooling means using a cooling medium such as water, the piping facility for distributing the medium is not required as the cooling facility, and the facility can be simplified. Can do.

以上のように、型締装置２０における基盤２上のコーベルライナＣLが敷設された摺動箇所に、冷却機構２１を設けることにより、摺動箇所を強制的に冷却し、潤滑油温度を所定温度以下に抑えて潤滑油の劣化を抑えることができ、良好な潤滑状態を維持することができる。これにより、コーベルライナＣLが摺動熱によって焼付きや、折損などの発生を防止することができ、機械故障を未然に防止することができる。さらには、潤滑油の劣化を抑えることができるので、良好な潤滑状態によってライナ類の異常摩耗を防止することができ、機械寿命を延伸することができる。   As described above, by providing the cooling mechanism 21 at the sliding portion where the corbel liner CL on the base 2 is laid in the mold clamping device 20, the sliding portion is forcibly cooled, and the lubricating oil temperature is set to a predetermined temperature. The deterioration of the lubricating oil can be suppressed by suppressing to the following, and a good lubricating state can be maintained. As a result, the corbel liner CL can be prevented from being seized or broken by sliding heat, and mechanical failure can be prevented. Furthermore, since deterioration of the lubricating oil can be suppressed, abnormal wear of the liners can be prevented by a good lubricating state, and the mechanical life can be extended.

本発明は、以上の例に挙げた射出成形機における型締装置におけるマシンベース摺動部の冷却機構に限られない。ダイカストマシン等の他の成形装置に適用することができる。   The present invention is not limited to the cooling mechanism of the machine base sliding portion in the mold clamping device in the injection molding machine mentioned in the above example. The present invention can be applied to other molding apparatuses such as die casting machines.

２ａ 摺動箇所近傍の部材
２０ 型締装置
２１ 冷却機構
２２ 冷却穴
２３ 継手
２４ 冷却ホース
３０ 冷却ファン
３１ 支持部材
ＣL コーベルライナ 2a Member near sliding part 20 Clamping device 21 Cooling mechanism 22 Cooling hole 23 Joint 24 Cooling hose 30 Cooling fan 31 Support member CL Kobel liner

Claims (3)

ダイカストマシンまたは射出成形機の型締装置（２０）において、可動プラテン（４）が摺動動作する基盤（２）上の摺動箇所を冷却する冷却機構（２１）であって、
前記基盤（２）上の摺動箇所近傍の部材に、冷却媒体を流通することによって前記基盤（２）上の摺動箇所を冷却することを特徴とする型締装置におけるマシンベース摺動部の冷却機構。 A cooling mechanism (21) for cooling a sliding portion on a base (2) on which a movable platen (4) slides in a mold clamping device (20) of a die casting machine or an injection molding machine,
The sliding part on the base (2) is cooled by circulating a cooling medium through a member in the vicinity of the sliding part on the base (2). Cooling mechanism. 前記冷却媒体は、水であることを特徴とする請求項１記載の型締装置におけるマシンベース摺動部の冷却機構。   2. The cooling mechanism for a machine base sliding portion in a mold clamping apparatus according to claim 1, wherein the cooling medium is water. 前記冷却機構（２１）は、冷却ファン（３０）により前記基盤（２）上の摺動箇所に向けて送風することによって冷却することを特徴とする請求項１に記載の型締装置におけるマシンベース摺動部の冷却機構。   The machine base in the mold clamping apparatus according to claim 1, wherein the cooling mechanism (21) is cooled by blowing air toward a sliding portion on the base (2) by a cooling fan (30). Cooling mechanism for sliding parts.
JP2009087227A 2009-03-31 2009-03-31 Cooling mechanism of machine base sliding part in mold clamping device Expired - Fee Related JP5396973B2 (en)

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EP3546190A1 (en) * 2018-03-30 2019-10-02 Sumitomo Heavy Industries, LTD. Injection molding machine
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US20190009442A1 (en) * 2017-07-04 2019-01-10 Fanuc Corporation Machine base
JP2019014060A (en) * 2017-07-04 2019-01-31 ファナック株式会社 Machine stand
US10661491B2 (en) 2017-07-04 2020-05-26 Fanuc Corporation Machine base
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JP2019177593A (en) * 2018-03-30 2019-10-17 住友重機械工業株式会社 Injection molding machine
JP7055681B2 (en) 2018-03-30 2022-04-18 住友重機械工業株式会社 Injection molding machine
JP2021084411A (en) * 2019-11-29 2021-06-03 住友重機械工業株式会社 Injection molding machine
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