JP2951140B2 - Mold clamping device for electric injection molding machine - Google Patents

Mold clamping device for electric injection molding machine

Info

Publication number
JP2951140B2
JP2951140B2 JP5036862A JP3686293A JP2951140B2 JP 2951140 B2 JP2951140 B2 JP 2951140B2 JP 5036862 A JP5036862 A JP 5036862A JP 3686293 A JP3686293 A JP 3686293A JP 2951140 B2 JP2951140 B2 JP 2951140B2
Authority
JP
Japan
Prior art keywords
hydraulic operating
male screw
fixed
injection molding
movable plate
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
JP5036862A
Other languages
Japanese (ja)
Other versions
JPH06246806A (en
Inventor
精 平井
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.)
Meiki Seisakusho KK
Original Assignee
Meiki Seisakusho KK
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 Meiki Seisakusho KK filed Critical Meiki Seisakusho KK
Priority to JP5036862A priority Critical patent/JP2951140B2/en
Publication of JPH06246806A publication Critical patent/JPH06246806A/en
Application granted granted Critical
Publication of JP2951140B2 publication Critical patent/JP2951140B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C2045/4036—Ejector constructions; Ejector operating mechanisms driven by a screw and nut mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
    • B29C2045/685—Mould opening, closing or clamping devices hydro-mechanical using mechanical drive means for mould closing to obtain the hydraulic clamping pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms

Landscapes

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

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、成形金型を用いて溶融
樹脂を射出成形する射出成形機の型締装置に関し、詳し
くはサーボモータを駆動源として可動盤を往復駆動する
電動射出成形機の型締装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping device for an injection molding machine for injection molding a molten resin using a molding die, and more particularly to an electric injection molding machine for reciprocatingly driving a movable plate with a servomotor as a drive source. A mold clamping device.

【０００２】[0002]

【従来の技術】従来より、例えば交流サーボモータで駆
動されるネジ送り機構にて可動盤を往復駆動する電動射
出成形機の型締装置が各種知られている。この種の型締
装置では、（１）可動盤の往復駆動力だけでなく、圧締
力もサーボモータから得る形式のものや、（２）サーボ
モータとは別に、圧締力発生用の油圧装置を備えた形式
ものが知られている。2. Description of the Related Art Conventionally, various types of mold clamping devices for electric injection molding machines have been known in which a movable platen is reciprocated by a screw feed mechanism driven by an AC servomotor. In this type of mold clamping device, (1) a type in which not only the reciprocating drive force of the movable platen but also the clamping force is obtained from a servomotor, and (2) a hydraulic device for generating a clamping force separately from the servomotor Is known.

【０００３】[0003]

【発明が解決しようとする課題】ところが、上記（１）
は、充分な圧締力を得るにはサーボモータをはじめとし
て可動盤に圧締力を伝達するためのネジ送り機構などの
大型化が避けられなかった。また、（２）は、大きい圧
締力を得られるのであるが、油圧ポンプなどの機器や油
圧回路などが必要となり装置が複雑であった。However, the above (1)
However, in order to obtain a sufficient pressing force, it is inevitable that a servo motor and a screw feed mechanism for transmitting the pressing force to the movable plate are enlarged. In the case of (2), a large pressing force can be obtained, but equipment such as a hydraulic pump and a hydraulic circuit are required, and the apparatus is complicated.

【０００４】本発明の目的とするところは、大型化、複
雑化することなく充分な圧締力を得られるサーボモータ
駆動方式の型締装置を提供することにある。An object of the present invention is to provide a servo motor driving type mold clamping device capable of obtaining a sufficient clamping force without increasing the size and complexity.

【０００５】[0005]

【課題を解決するための手段】この課題を解決するため
に、本発明の電動射出成形機の型締装置は、機台に固定
盤と該固定盤と相対した一定位置に後部盤を固定し、該
固定盤と該後部盤の隅にタイバを緊張させるようにして
固定し、該固定盤と該後部盤との間にて該タイバに案内
されて移動可能な可動盤を載置した電動射出成形機の型
締装置において、該後部盤にサーボモータにより回転す
るナット部材を軸支し、該ナット部材の内孔に雄ネジ桿
の一端を螺合し、該ナット部材の回転により、該雄ネジ
桿を直進移動可能にし、一方該可動盤の後部に隣接して
該可動盤と隙間を生じさせ得るように係合し、該タイバ
に案内されて移動する液圧作動盤を設け、該雄ネジ桿の
先端を該液圧作動盤に係合させて該可動盤を移動させる
ようにし、該可動盤を前進させ金型を閉じたとき、該液
圧作動盤が該タイバの外周に設けた溝に係合させ該液圧
作動盤を固定させる液圧作動盤位置固定手段を設け、該
液圧作動盤に液体を封入した密閉袋を内蔵させ、該密閉
袋内の封入液の増圧により変位し、該可動盤に圧締力を
生じさせるためのピストンを設け、該液圧作動盤が該タ
イバに固定された後の該雄ネジ桿の前進により、該密閉
袋が該雄ネジ桿により押圧されて、該ピストンに圧締力
を作用するようにした緩衝部材を設けている。SUMMARY OF THE INVENTION In order to solve this problem, a mold clamping apparatus for an electric injection molding machine according to the present invention comprises a fixing plate and a rear plate fixed to a machine base at a fixed position facing the fixing plate. An electric injection device in which a tie bar is fixed to the corners of the fixed plate and the rear plate so as to be tensioned, and a movable plate which is movable between the fixed plate and the rear plate while being guided by the tie bar. In a mold clamping device of a molding machine, a nut member which is rotated by a servomotor is supported on the rear panel, and one end of a male screw rod is screwed into an inner hole of the nut member. A hydraulic actuation plate, which is provided so as to be capable of moving the screw rod in a straight line while being adjacent to a rear portion of the movable plate so as to form a gap with the movable plate and guided and moved by the tie bar, The movable platen is moved by engaging the tip of a screw rod with the hydraulic operating plate, When the mold is closed by moving the hydraulic operating panel forward, the hydraulic operating panel is engaged with a groove provided on the outer periphery of the tie bar to fix the hydraulic operating panel. The board has a built-in hermetic bag filled with liquid therein, and the movable platen is provided with a piston for displacing by increasing the pressure of the sealed liquid in the hermetic bag to generate a pressing force on the movable plate. The sealing bag is pressed by the male screw rod by the advance of the male screw rod after being fixed to the piston, and a cushioning member is provided so as to apply a pressing force to the piston.

【０００６】[0006]

【作用】上記構成の射出成形機の型締装置においては、
固定金型と可動金型からなる成形金型が、予め固定盤お
よび可動盤間に装着される。サーボモータによりナット
部材が回転されると、雄ネジ桿は直進移動する。雄ネジ
桿の直進移動に応じて、雄ネジ桿に係合している液圧作
動盤が移動する。液圧作動盤は可動盤の後部に隣接して
おり互いに係合しているので、液圧作動盤の移動に併せ
て可動盤が移動される。In the mold clamping device of the injection molding machine having the above structure,
A molding die composed of a fixed die and a movable die is previously mounted between the fixed platen and the movable platen. When the nut member is rotated by the servomotor, the male screw rod moves straight. The hydraulic operating board engaged with the male screw rod moves according to the straight movement of the male screw rod. Since the hydraulic operation board is adjacent to the rear part of the movable board and is engaged with each other, the movable board is moved in accordance with the movement of the hydraulic operation board.

【０００７】この際、ナット部材の回転方向を調節して
可動盤を固定盤に近接移動させると、成形金型は型閉さ
れる。型閉に合わせて、液圧作動盤位置固定手段がタイ
バの外周に設けられた溝に係合して液圧作動盤の位置を
固定する。これにより、液圧作動盤、可動盤、成形金型
および固定盤の互いの相対位置が実質的に固定される。At this time, when the rotation direction of the nut member is adjusted to move the movable plate close to the fixed plate, the molding die is closed. In accordance with the closing of the mold, the hydraulic operating panel position fixing means engages with a groove provided on the outer periphery of the tie bar to fix the position of the hydraulic operating panel. As a result, the relative positions of the hydraulic operating plate, the movable plate, the molding die, and the fixed plate are substantially fixed.

【０００８】液圧作動盤の位置を固定後、サーボモータ
によってナット部材を駆動して雄ネジ桿を前進させる
と、雄ネジ桿は密閉袋を押圧し、封入液に押圧力を及ぼ
す。封入液は押圧力に応じて圧縮されるとともに、下記
（１）式で表されるように、該圧縮量に応じて増圧す
る。封入液の圧力は、ピストンを介して、可動盤に圧締
力として作用する。After fixing the position of the hydraulic pressure operation panel, when the nut member is driven by the servomotor to advance the male screw rod, the male screw rod presses the airtight bag and exerts a pressing force on the sealed liquid. The sealed liquid is compressed according to the pressing force and increases in pressure according to the compression amount as represented by the following equation (1). The pressure of the filled liquid acts as a pressing force on the movable platen via the piston.

【０００９】[0009]

【数１】 (Equation 1)

【００１０】このように、雄ネジ桿により封入液を押
圧、圧縮し、これによって増加される封入液の圧力を圧
締力として作用させている。したがって、封入液にわず
かな押圧力を及ぼすだけで充分な圧締力を得ることがで
き、駆動源としてのサーボモータやサーボモータの力を
伝達するためのネジ送り機構などを小型化できる。As described above, the sealed liquid is pressed and compressed by the male screw rod, and the increased pressure of the sealed liquid acts as a pressing force. Therefore, a sufficient pressing force can be obtained only by applying a slight pressing force to the sealed liquid, and a servomotor as a drive source and a screw feed mechanism for transmitting the force of the servomotor can be miniaturized.

【００１１】こうして得られる圧締力で成形金型を型締
して射出成形を実施した後、サーボモータはナット部材
を上記とは逆方向に回転駆動して雄ネジ桿を後退させ、
雄ネジ桿による封入液の押圧を解除する。続いて、液圧
作動盤位置固定手段による液圧作動盤の位置の固定が解
除されると、サーボモータは、ナット部材を上記型締時
とは逆方向に回転駆動する。これに応じて、雄ネジ桿は
後退し、液圧作動盤を介して可動盤を牽引して、固定盤
から離隔移動させる。この可動盤の移動にて、成形金型
は型開される。型開後、成形品を取り出して、射出成形
を繰り返すことができる。After injection molding is performed by clamping the molding die with the thus obtained pressing force, the servo motor drives the nut member to rotate in the opposite direction to the above to retract the male screw rod.
Release the pressure of the sealed liquid by the male screw rod. Subsequently, when the fixing of the position of the hydraulic operating panel by the hydraulic operating panel position fixing means is released, the servo motor drives the nut member to rotate in the direction opposite to the direction at the time of the mold clamping. In response, the male threaded rod retracts and pulls the movable board through the hydraulically operated board to move it away from the fixed board. The molding die is opened by the movement of the movable platen. After opening the mold, the molded product can be taken out and the injection molding can be repeated.

【００１２】[0012]

【実施例】次に、本発明を一層明らかにするために、好
適な一実施例を図面を参照して説明する。本実施例の型
締装置１０は、加熱筒１１を備えた横型射出装置ととも
に射出成形機に装着して使用されるが、横型射出装置は
周知であるので、詳細な図示および説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment will be described with reference to the drawings to further clarify the present invention. The mold clamping device 10 of this embodiment is used by being mounted on an injection molding machine together with a horizontal injection device provided with a heating cylinder 11, but since the horizontal injection device is well-known, detailed illustration and description thereof will be omitted.

【００１３】図１および図２に示すように、型締装置１
０の矢印Ｒ方向の端には、固定盤１２が、射出成形機の
機台（図示略）に固定されており、矢印Ｌ方向の端に
は、固定盤１２と相対向する後部盤１４が基台に固定さ
れている。また、固定盤１２および後部盤１４は、両者
間に横設された複数本のタイバ１６にナット１７ａ、１
７ｂで締結固定されている。As shown in FIG. 1 and FIG.
A fixed platen 12 is fixed to an end of the injection molding machine (not shown) at an end of the arrow R direction 0, and a rear plate 14 facing the fixed platen 12 at an end of the arrow L direction. It is fixed to the base. Further, the fixed board 12 and the rear board 14 are provided with nuts 17a, 1
7b.

【００１４】固定盤１２には固定金型２２が装着されて
おり、この固定金型２２の矢印Ｌ側には可動金型２４が
配されている。この可動金型２４は、タイバ１６に摺動
可能に取り付けられた可動盤１８に装着されており、固
定金型２２と共に成形金型２６を構成している。この成
形金型２６は、可動盤１８がタイバ１６に沿って固定盤
１２に近接、離隔することにより、型閉および型開され
る。A fixed die 22 is mounted on the fixed platen 12, and a movable die 24 is disposed on the arrow L side of the fixed die 22. The movable mold 24 is mounted on a movable plate 18 slidably attached to the tie bar 16, and forms a forming mold 26 together with the fixed mold 22. The mold 26 is closed and opened when the movable plate 18 approaches and separates from the fixed plate 12 along the tie bar 16.

【００１５】またタイバ１６には、可動盤１８の後部に
隣接して、液圧作動盤２０が摺動可能に取り付けられて
いる。本明細書において、可動盤１８の後部とは、可動
盤１８の後部盤１４側をいうものであり、可動盤１８の
固定盤１２方向への移動を前進、後部盤１４方向への移
動を後退という。図１および図３に示すように、液圧作
動盤２０にはヘッド収納部２１ａと小径部２１ｂとから
なる複数のボルト貫通孔２１が設けられている。さらに
各ボルト貫通孔２１を貫通するボルト２３が可動盤１８
に螺着されており、液圧作動盤２０と可動盤１８とは、
ボルト２３を介して連結されている。ただし、ボルト２
３の可動盤２０から突出している軸部２３ａの長さはボ
ルト貫通孔２１の小径部２１ａよりも長く、軸部２３ａ
は小径部２１ａとは互いに摺動可能である。したがっ
て、液圧作動盤２０と可動盤１８とは、軸部２３ａと小
径部２１ａとの長さの差ｄに対応して、０〜ｄの範囲内
で隙間を生じさせ得るように係合している。A hydraulic operating board 20 is slidably attached to the tie bar 16 adjacent to the rear of the movable board 18. In this specification, the rear of the movable platen 18 refers to the rear platen 14 side of the movable platen 18, and moves the movable platen 18 toward the fixed platen 12 and retreats toward the rear platen 14. That. As shown in FIGS. 1 and 3, the hydraulic operating panel 20 is provided with a plurality of bolt through holes 21 including a head storage portion 21 a and a small diameter portion 21 b. Further, the bolt 23 penetrating through each bolt through hole 21 is
And the hydraulic operating plate 20 and the movable plate 18 are
They are connected via bolts 23. However, bolt 2
3, the length of the shaft portion 23a protruding from the movable platen 20 is longer than the small diameter portion 21a of the bolt through hole 21, and the shaft portion 23a
Can slide with respect to the small diameter portion 21a. Accordingly, the hydraulic operating plate 20 and the movable plate 18 are engaged with each other so as to form a gap in the range of 0 to d corresponding to the difference d in length between the shaft portion 23a and the small diameter portion 21a. ing.

【００１６】図１に示すように、液圧作動盤２０の中央
には、可動盤１８側に開口する円筒状のシリンダ４０が
穿設されると共に、シリンダ４０と連通し後部盤１４側
に開口する貫通孔５０が穿設されている。このシリンダ
４０には、可動盤１８に連結されたピストン４２が摺動
自在に挿通されており、ピストン４２とシリンダ４０と
で閉鎖室４４を形成している。この閉鎖室４４には、封
入液４６を封入された合成ゴム製の密封袋４８が収納さ
れている。また、貫通孔５０には、略全長にわたって雄
ネジを備えた雄ネジ部材５２の先端に設けられた封入液
押圧部５４が、その軸方向に沿って往復移動可能に挿通
されている。この封入液押圧部５４は、先端側に大径部
５４ａを備えた段差付円柱状である。大径部５４ａは、
段差を介して液圧作動盤２０と雄ネジ部材５２とを係合
させると共に封入液４６を押圧するための部材となって
いる。封入液押圧部５４は、閉鎖室４４内に突出した際
には大径部５４ａにて密封袋４８内の封入液４６を押圧
可能であり、矢印Ｌ方向に移動する際には段差を介して
液圧作動盤２０を牽引可能である。As shown in FIG. 1, at the center of the hydraulic operating panel 20, a cylindrical cylinder 40 which is open toward the movable plate 18 is formed, and communicates with the cylinder 40 to open at the rear panel 14 side. A through hole 50 is formed. A piston 42 connected to the movable plate 18 is slidably inserted through the cylinder 40, and the piston 42 and the cylinder 40 form a closed chamber 44. The closed chamber 44 accommodates a synthetic rubber sealed bag 48 in which a sealed liquid 46 is sealed. A sealed liquid pressing portion 54 provided at the end of a male screw member 52 having a male screw over substantially the entire length is inserted into the through hole 50 so as to be able to reciprocate along the axial direction. The filled liquid pressing portion 54 has a stepped cylindrical shape having a large-diameter portion 54a on the distal end side. The large diameter portion 54a is
This is a member for engaging the hydraulic operating panel 20 and the male screw member 52 via the step and pressing the filled liquid 46. The filled liquid pressing portion 54 can press the filled liquid 46 in the sealed bag 48 by the large diameter portion 54a when protruding into the closed chamber 44, and when moving in the direction of the arrow L through a step. The hydraulic operation board 20 can be pulled.

【００１７】雄ネジ部材５２の密封液押圧部５４側の端
部外周には、液圧作動盤２０側に開口する環状の溝５６
を有するストッパ５８が固着されている。ストッパ５８
と液圧作動盤２０との間には、本発明の緩衝部材として
のコイルスプリング６０が介装されており、ストッパ５
８と液圧作動盤２０とを互いに離隔させる方向に沿って
付勢している。これらストッパ５８およびコイルスプリ
ング６０は、雄ネジ部材５２と液圧作動盤２０との相対
距離を調節するために設けられているが、その機能につ
いては後述する。An annular groove 56 opening toward the hydraulic operating panel 20 is formed on the outer periphery of the end of the male screw member 52 on the sealing liquid pressing portion 54 side.
Is fixed. Stopper 58
A coil spring 60 as a buffer member according to the present invention is interposed between the
8 and the hydraulic operating panel 20 are urged along a direction in which they are separated from each other. The stopper 58 and the coil spring 60 are provided for adjusting the relative distance between the male screw member 52 and the hydraulic operating board 20, and their functions will be described later.

【００１８】雄ネジ部材５２の他の端部は、軸受け６２
を介して後部盤１４に軸支されたナット部材６４に挿通
している。このナット部材６４には、雄ネジ部材５２の
雄ネジと整合する雌ネジが設けられており、ナット部材
６４の回転に応じて、雄ネジ部材５２を軸方向移動させ
ることができる。The other end of the male screw member 52 has a bearing 62
Through a nut member 64 supported by the rear panel 14. The nut member 64 is provided with a female screw matching the male screw of the male screw member 52, and the male screw member 52 can be moved in the axial direction according to the rotation of the nut member 64.

【００１９】ナット部材６４の後部盤１４から突出する
部分には、ナット部材６４と一体的に回転する歯付きプ
ーリ６６が外嵌されている。一方、後部盤１４には、取
付け部材６８を介して交流サーボモータ７０が固定され
ている。また、この交流サーボモータ７０の出力軸（図
示略）には歯付きプーリ７２が連結されている。さら
に、この歯付きプーリ７２と歯付きプーリ６６とにわた
って無端の歯付きベルト７４が巻回されており、歯付き
プーリ７２と歯付きプーリ６６とは歯付きベルト７４を
介して連動回転可能である。したがって、交流サーボモ
ータ７０を稼働させて、歯付きプーリ７２、歯付きベル
ト７４および歯付きプーリ６６を介してナット部材６４
を回転させて、雄ネジ部材５２を軸方向に沿って移動さ
せることが可能である。A toothed pulley 66 that rotates integrally with the nut member 64 is externally fitted to a portion protruding from the rear panel 14 of the nut member 64. On the other hand, an AC servomotor 70 is fixed to the rear panel 14 via a mounting member 68. A toothed pulley 72 is connected to an output shaft (not shown) of the AC servomotor 70. Further, an endless toothed belt 74 is wound around the toothed pulley 72 and the toothed pulley 66, and the toothed pulley 72 and the toothed pulley 66 can rotate interlockingly via the toothed belt 74. . Therefore, the AC servomotor 70 is operated to drive the nut member 64 through the toothed pulley 72, the toothed belt 74, and the toothed pulley 66.
Can be rotated to move the male screw member 52 along the axial direction.

【００２０】雄ネジ部材５２は、矢印Ｒ方向に前進させ
られた際には、ストッパ部材５８およびコイルスプリン
グ６０を介して液圧作動盤２０を押圧し、この押圧によ
って液圧作動盤２０を矢印Ｒ方向に移動させ、併せて可
動盤１８を矢印Ｒ方向に移動させることが可能である。
この際、コイルスプリング６０の付勢力により、雄ネジ
部材５２と液圧作動盤２０との相対距離の短縮が防止さ
れるので、雄ネジ部材５２の先端に設けられている封入
液押圧部５４が閉鎖室４４内へ突出することはない。When the male screw member 52 is advanced in the direction of arrow R, the male screw member 52 presses the hydraulic operating board 20 via the stopper member 58 and the coil spring 60, and the pressing causes the hydraulic operating board 20 to move in the direction indicated by the arrow. It is possible to move the movable plate 18 in the direction of arrow R in addition to the movement in the direction R.
At this time, the biasing force of the coil spring 60 prevents the relative distance between the male screw member 52 and the hydraulic operating panel 20 from being shortened, so that the filled liquid pressing portion 54 provided at the tip of the male screw member 52 It does not protrude into the closed chamber 44.

【００２１】ところが、例えば成形金型２６が型閉して
可動盤１８の矢印Ｒ方向への移動が規制された際などに
は、液圧作動盤２０の矢印Ｒ方向への移動も規制される
ことになる。この様に液圧作動盤２０の矢印Ｒ方向への
移動が規制された状態で雄ネジ部材５２を前進させる
と、雄ネジ部材５２はコイルスプリング６０の付勢力に
抗して前進することになる。このため、コイルスプリン
グ６０はそのばね長を短縮されてストッパ５８の溝５６
内に収納され、雄ネジ部材５２と液圧作動盤２０との相
対距離が短縮される。また、コイルスプリング６０のば
ね長の短縮に併せて、封入液押圧部５４が閉鎖室４４内
に突出して密封袋４８内の封入液４６を押圧することに
なる。ただし、この封入液押圧部５４の閉鎖室４４内へ
の突出は、ストッパ部材５８が液圧作動盤２０に当接す
ることにより規制される。However, for example, when the molding die 26 is closed and the movement of the movable platen 18 in the direction of arrow R is regulated, the movement of the hydraulic operating plate 20 in the direction of arrow R is also restricted. Will be. When the male screw member 52 is advanced in a state where the movement of the hydraulic operating board 20 in the direction of the arrow R is restricted in this way, the male screw member 52 advances against the urging force of the coil spring 60. . Therefore, the length of the coil spring 60 is shortened, and the length of the groove 56 of the stopper 58 is reduced.
And the relative distance between the male screw member 52 and the hydraulic operating panel 20 is reduced. In addition, as the spring length of the coil spring 60 is shortened, the filled liquid pressing portion 54 projects into the closed chamber 44 and presses the filled liquid 46 in the sealed bag 48. However, the protrusion of the filled liquid pressing portion 54 into the closed chamber 44 is regulated by the stopper member 58 abutting on the hydraulic operating panel 20.

【００２２】他方、雄ネジ部材５２を矢印Ｌ方向に後退
させた際には、雄ネジ部材５２は、封入液押圧部５４の
大径部５４ａを介して液圧作動盤２０を牽引して移動さ
せ、併せてボルト２１を介して可動盤１８を牽引して移
動させる。なお、雄ネジ部材５２は、矢印Ｌ側の端部を
ナット部材６４から脱落させない範囲で矢印Ｒ方向へ移
動可能であり、ストッパ５８がナット部材６４（後部盤
１４）に当接するまでの範囲で矢印Ｌ方向に移動可能で
ある。したがって、液圧作動盤２０および可動盤１８
も、上記雄ネジ部材５２の移動範囲に応じた範囲で、矢
印Ｒ、Ｌ方向に移動可能である。On the other hand, when the male screw member 52 is retracted in the direction of arrow L, the male screw member 52 moves by pulling the hydraulic operating board 20 through the large diameter portion 54a of the filled liquid pressing portion 54. At the same time, the movable plate 18 is pulled and moved via the bolt 21. The male screw member 52 can be moved in the direction of the arrow R within a range where the end on the arrow L side does not drop off from the nut member 64, and only when the stopper 58 contacts the nut member 64 (the rear panel 14). It is movable in the direction of arrow L. Therefore, the hydraulic operating board 20 and the movable board 18
Can also be moved in the directions of the arrows R and L within a range corresponding to the moving range of the male screw member 52.

【００２３】一方、図１および図２に示すように、液圧
作動盤２０の後部盤１４側の面には、本発明の液圧作動
盤位置固定手段としての複数の割クランプ７６が、把持
部７７ａ、７７ｂ間にタイバ１６を挿通させて、設置さ
れている。これらの割クランプ７６には、一対のロッド
７８ａ、７８ｂを備えたエアシリンダ８０が備えられて
いる。On the other hand, as shown in FIGS. 1 and 2, a plurality of split clamps 76 as a hydraulic operating panel position fixing means of the present invention are gripped on the surface of the hydraulic operating panel 20 on the rear panel 14 side. The tie bar 16 is inserted between the portions 77a and 77b. These split clamps 76 are provided with an air cylinder 80 having a pair of rods 78a, 78b.

【００２４】図４に示すように、エアシリンダ８０は、
エアシリンダ８０への圧力空気の給排によって、ロッド
７８ａ、７８ｂをエアシリンダ８０から突出させる方向
およびロッド７８ａ、７８ｂをエアシリンダ８０内に収
納する方向に駆動可能である。エアシリンダ８０がロッ
ド７８ａ、７８ｂを突出させる方向に駆動した際には、
把持部７７ａ、７７ｂが互いに離隔して割クランプ７６
は開となり（図４（ａ）参照）、エアシリンダ８０がロ
ッド７８ａ、７８ｂを収納する方向に駆動したさいに
は、把持部７７ａ、７７ｂが互いに近接して割クランプ
７６は閉となる（図４（ｂ）参照）。この割クランプ７
６が閉となった際には、把持部７７ａ、７７ｂにてタイ
バ１６を挟持可能である。As shown in FIG. 4, the air cylinder 80
By supplying and discharging compressed air to and from the air cylinder 80, the air cylinder 80 can be driven in a direction in which the rods 78a and 78b protrude from the air cylinder 80 and in a direction in which the rods 78a and 78b are housed in the air cylinder 80. When the air cylinder 80 is driven in a direction in which the rods 78a and 78b project,
The gripping portions 77a and 77b are separated from each other and the split clamp 76
Is open (see FIG. 4 (a)), and when the air cylinder 80 is driven in the direction to accommodate the rods 78a, 78b, the gripping portions 77a, 77b are close to each other and the split clamp 76 is closed (FIG. 4A). 4 (b)). This split clamp 7
When the door 6 is closed, the tie bar 16 can be held by the gripping portions 77a and 77b.

【００２５】また、図１および図２に示すように、タイ
バ１６には液圧作動盤２０の移動範囲にほぼ一致する範
囲で、周方向に沿った溝１６ａが設けられており、割ク
ランプ７６の把持部７７ａ、７７ｂ内面には溝１６ａと
整合する溝（図示略）が設けられている。このため、割
クランプ７６にてタイバ１６を挟持すれば、タイバ１６
の溝１６ａと割クランプ７６の溝とが歯合して、割クラ
ンプ７６とタイバ１６との相対位置を固定できる。割ク
ランプ７６は液圧作動盤２０に固着されているので、割
クランプ７６とタイバ１６との相対位置を固定すること
により、液圧作動盤２０のタイバ１６、固定盤１２およ
び後部盤１４に対する相対位置を固定することができ
る。As shown in FIGS. 1 and 2, the tie bar 16 is provided with a groove 16 a along the circumferential direction in a range substantially coincident with the moving range of the hydraulic operating board 20. Grooves (not shown) that match the grooves 16a are provided on the inner surfaces of the grip portions 77a and 77b. Therefore, if the tie bar 16 is held by the split clamp 76,
The groove 16a and the groove of the split clamp 76 mesh with each other, so that the relative position between the split clamp 76 and the tie bar 16 can be fixed. Since the split clamp 76 is fixed to the hydraulic operating panel 20, by fixing the relative position between the split clamp 76 and the tie bar 16, the relative positions of the hydraulic operating panel 20 to the tie bar 16, the fixed panel 12 and the rear panel 14 are determined. The position can be fixed.

【００２６】なお、図２に示すように、可動盤１８には
交流サーボモータ２８が取付けられている。この交流サ
ーボモータ２８の出力軸３０はウォーム（図示略）およ
びウォームホイール３２を介して可動盤１８内に挿通し
ているピニオン軸３４に接続されている。図１に示すよ
うに、このピニオン軸３４に連結されているピニオン３
６は、突き出しピン３８のラック３８ａと歯合してい
る。これにより、交流サーボモータ２８の回転を突き出
しピン３８に伝達して、突き出しピン３８を矢印Ｒ、Ｌ
方向に移動させることができる。また、この突き出しピ
ン３８を介して可動金型２４内に収納されている製品突
き出し機構（図示略）を作動させることができる。As shown in FIG. 2, an AC servomotor 28 is attached to the movable plate 18. An output shaft 30 of the AC servomotor 28 is connected to a pinion shaft 34 inserted through the movable plate 18 via a worm (not shown) and a worm wheel 32. As shown in FIG. 1, the pinion 3 connected to the pinion shaft 34
6 meshes with the rack 38 a of the protruding pin 38. As a result, the rotation of the AC servomotor 28 is transmitted to the protruding pin 38, and the protruding pin 38 is moved by the arrows R and L.
Can be moved in any direction. Further, a product ejecting mechanism (not shown) housed in the movable mold 24 can be operated via the ejecting pins 38.

【００２７】次に、本実施例の型締装置１０にて成形金
型２６を型締する場合に次いて説明する。まず、図５に
示す型開状態から、交流サーボモータ７０を操作してナ
ット部材６４を回転させ、雄ネジ部材５２を矢印Ｒ方向
に移動させる。雄ネジ部材５２は、ストッパ５８および
コイルスプリング６０を介して液圧作動盤２０を押圧し
て、液圧作動盤２０を矢印Ｒ方向に移動させる。これに
より、液圧作動盤２０と共に可動盤１８および可動金型
２４が矢印Ｒ方向に移動する。該移動は、可動金型２４
が固定金型２２と接合して成形金型２６が型閉される
（図５参照）まで継続される。Next, a case where the mold 26 is clamped by the mold clamping apparatus 10 of the present embodiment will be described. First, from the mold opening state shown in FIG. 5, the nut member 64 is rotated by operating the AC servomotor 70, and the male screw member 52 is moved in the direction of the arrow R. The male screw member 52 presses the hydraulic operating panel 20 via the stopper 58 and the coil spring 60 to move the hydraulic operating panel 20 in the direction of arrow R. Thereby, the movable plate 18 and the movable mold 24 move in the arrow R direction together with the hydraulic operating plate 20. The movement is performed by the movable mold 24.
Is continued until the molding die 26 is joined with the fixed die 22 and the molding die 26 is closed (see FIG. 5).

【００２８】成形金型２６が型閉された時点で、割クラ
ンプ７６のエアシリンダ８０を操作して割クランプ７６
を閉じる。割クランプ７６の把持部７７ａ、７７ｂはタ
イバ１６を挟持し、溝１６ａと係合する。これにより、
液圧作動盤２０は、割クランプ７６およびタイバ１６を
介して固定盤１２との相対位置を固定される。したがっ
て、固定盤１２、成形金型２６、可動盤１８および液圧
作動盤２０の相対位置が、割クランプ７６とナット１７
ａとの間で実質的に固定される。When the molding die 26 is closed, the air cylinder 80 of the split clamp 76 is operated to operate the split clamp 76.
Close. The gripping portions 77a and 77b of the split clamp 76 hold the tie bar 16 and engage with the groove 16a. This allows
The relative position of the hydraulic plate 20 with respect to the fixed plate 12 is fixed via the split clamp 76 and the tie bar 16. Accordingly, the relative positions of the fixed platen 12, the molding die 26, the movable plate 18 and the hydraulic operating plate 20 are different from those of the split clamp 76 and the nut 17
a.

【００２９】続いて、交流サーボモータ７０を操作して
ナット部材６４を回転させ、雄ネジ部材５２を、さらに
矢印Ｒ方向に移動させる。液圧作動盤２０の位置が固定
されているので、雄ネジ部材５２は、コイルスプリング
６０の付勢力に抗して移動して封入液押圧部５４を閉鎖
室４４内に突出させる。ただし、この雄ネジ部材５２の
移動はストッパ５８の液圧作動盤２０への当接により規
制され、併せて封入液押圧部５４の閉鎖室４４内への突
出量が規制される。この封入液押圧部５４の突出によ
り、密封袋４８が凹陥変形するとともに、封入液４６が
大径部５４ａによって押圧される（図７および図８
（ｂ）参照）。このため、封入液４６は圧縮されて、該
圧縮量に応じた圧力を発生する。この圧力は、密封袋４
８との接触面積に応じた力としてピストン４２に作用す
る。さらに、このピストン４２に作用する力は、可動盤
１８を介して、圧締力として成形金型２６に作用する。
ここにおいて、封入液４６の圧縮量は、閉鎖室４４内へ
の封入液押圧部５４の閉鎖室４４内への突出部分の体積
に応じたものとなるので、図８（ｂ）に示す封入液押圧
部５４の突出距離ｘを調節することで発生する圧力を調
節できる。Subsequently, the nut member 64 is rotated by operating the AC servomotor 70, and the male screw member 52 is further moved in the direction of arrow R. Since the position of the hydraulic operating panel 20 is fixed, the male screw member 52 moves against the urging force of the coil spring 60 to cause the filled liquid pressing portion 54 to protrude into the closed chamber 44. However, the movement of the male screw member 52 is regulated by the contact of the stopper 58 with the hydraulic operating board 20, and at the same time, the amount of protrusion of the filled liquid pressing portion 54 into the closed chamber 44 is regulated. Due to the projection of the filled liquid pressing portion 54, the sealed bag 48 is depressed and deformed, and the filled liquid 46 is pressed by the large diameter portion 54a (FIGS. 7 and 8).
(B)). Therefore, the filling liquid 46 is compressed, and generates a pressure corresponding to the compression amount. This pressure is applied to the sealed bag 4
8 acts on the piston 42 as a force corresponding to the area of contact with the piston 8. Further, the force acting on the piston 42 acts on the molding die 26 via the movable plate 18 as a pressing force.
Here, the amount of compression of the filling liquid 46 depends on the volume of the protruding portion of the filling liquid pressing portion 54 into the closing chamber 44 into the closing chamber 44, and therefore the filling liquid shown in FIG. The pressure generated by adjusting the protrusion distance x of the pressing portion 54 can be adjusted.

【００３０】このように、圧縮によって増加された封入
液４６の圧力を圧締力として作用させるので、封入液４
６にわずかな押圧力を及ぼすだけで充分な圧締力を得る
ことができる。したがって、圧締力発生源としての交流
サーボモータ７０および雄ネジ部材５２他の部材を大型
化する必要はない。このため、ネジ送り機構方式の型締
装置１０において、機構を大型化、複雑化することなく
充分な圧締力を得ることができる。As described above, since the pressure of the filling liquid 46 increased by the compression acts as a pressing force, the filling liquid 4
Sufficient pressing force can be obtained by applying a slight pressing force to 6. Therefore, it is not necessary to increase the size of the AC servomotor 70 and the male screw member 52 and other members as the source of the pressing force. For this reason, in the screw feeding mechanism type mold clamping device 10, a sufficient pressing force can be obtained without increasing the size and complexity of the mechanism.

【００３１】上記の型締状態にて射出成形後、交流サー
ボモータ７０を上記とは逆回転駆動してナット部材６４
を回転させれば、雄ネジ部材５２は矢印Ｌ方向に移動
し、図７に示す状態から図６に示す状態となる。ここで
割クランプ７６を開として液圧作動盤２０を固定状態か
ら解放する。この図６に示す状態では、タイバ１６の軸
方向に沿って液圧作動盤２０に作用する力は実質的に０
であるため、割クランプ７６は容易に開作動する。続い
て、雄ネジ部材５２を矢印Ｌ方向に移動させれば、液圧
作動盤２０、可動盤１８および可動金型２４が矢印Ｌ方
向に移動させられて、成形金型２６は型開される。型開
後、製品をとりだして次回の型締、射出成形が実施され
る。After the injection molding in the above-described mold clamping state, the AC servomotor 70 is driven to rotate in the reverse direction to the above, and the nut member 64 is rotated.
Is rotated, the male screw member 52 moves in the direction of arrow L, and changes from the state shown in FIG. 7 to the state shown in FIG. Here, the split clamp 76 is opened to release the hydraulic operating panel 20 from the fixed state. In the state shown in FIG. 6, the force acting on the hydraulic operating board 20 along the axial direction of the tie bar 16 is substantially zero.
Therefore, the split clamp 76 is easily opened. Subsequently, when the male screw member 52 is moved in the direction of the arrow L, the hydraulic operating panel 20, the movable plate 18, and the movable mold 24 are moved in the direction of the arrow L, and the molding die 26 is opened. . After the mold is opened, the product is taken out and the next mold clamping and injection molding are performed.

【００３２】以上、実施例により説明したが、本発明は
このような実施例に限定されるものではなく、本発明の
要旨を逸脱しない範囲でさまざまに実施できる。例え
ば、上記実施例では密封袋を合成ゴム製としたが、この
他に天然ゴム、合成樹脂など伸縮自在な柔軟性材を使用
できる。また、雄ネジ部材とナット部材とをボールネジ
機構としてもよい。Although the present invention has been described with reference to the embodiments, the present invention is not limited to such embodiments, and can be variously implemented without departing from the gist of the present invention. For example, in the above-mentioned embodiment, the sealing bag is made of synthetic rubber, but other flexible materials such as natural rubber and synthetic resin can be used. Further, the male screw member and the nut member may be a ball screw mechanism.

【００３３】[0033]

【発明の効果】以上説明した様に、本発明の射出成形機
の型締装置によれば、ネジ送り機構方式の型締装置にお
いて、大型化、複雑化することなく充分な圧締力を得る
ことができる。As described above, according to the mold clamping device for an injection molding machine of the present invention, a sufficient clamping force can be obtained without increasing the size and complexity of the screw clamping mechanism. be able to.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 実施例の射出成形機の型締装置の一部断面平
面図である。FIG. 1 is a partial cross-sectional plan view of a mold clamping device of an injection molding machine according to an embodiment.

【図２】 実施例の射出成形機の型締装置の構造の説明
図であり、図２（ａ）は上半部側面図、図２（ｂ）は図
２（ａ）のＡ−Ａ矢視図である。2A and 2B are explanatory views of a structure of a mold clamping device of an injection molding machine according to an embodiment, wherein FIG. 2A is an upper half side view, and FIG. 2B is an arrow AA in FIG. 2A. FIG.

【図３】 実施例の射出成形機の型締装置の可動盤と液
圧作動盤との連結部分の説明図である。FIG. 3 is an explanatory diagram of a connection portion between a movable plate and a hydraulic plate of the mold clamping device of the injection molding machine according to the embodiment.

【図４】 実施例の射出成形機の型締装置の割クランプ
の拡大図である。FIG. 4 is an enlarged view of a split clamp of the mold clamping device of the injection molding machine according to the embodiment.

【図５】 実施例の射出成形機の型締装置での成形金型
の型締作業の説明図である。FIG. 5 is an explanatory diagram of a mold clamping operation of a molding die in the mold clamping device of the injection molding machine according to the embodiment.

【図６】 実施例の射出成形機の型締装置での成形金型
の型締作業の説明図である。FIG. 6 is an explanatory diagram of a mold clamping operation of a molding die in a mold clamping device of an injection molding machine according to an embodiment.

【図７】 実施例の射出成形機の型締装置での成形金型
の型締作業の説明図である。FIG. 7 is an explanatory diagram of a mold clamping operation of a molding die in the mold clamping device of the injection molding machine according to the embodiment.

【図８】 実施例の射出成形機の型締装置の封入液押圧
部材による密封袋押圧の説明図である。FIG. 8 is an explanatory view of pressing a sealing bag by a filling liquid pressing member of a mold clamping device of an injection molding machine according to an embodiment.

【符号の説明】[Explanation of symbols]

１０・・・型締装置、１２・・・固定盤、１４・・・後
部盤、１８・・・可動盤、２０・・・液圧作動盤、２２
・・・固定金型、２４・・・可動金型、２６・・・成形
金型、４０・・・シリンダ、４２・・・ピストン、４４
・・・閉鎖室、４６・・・封入液、４８・・・密封袋、
５２・・・雄ネジ部材（雄ネジ桿）、５４・・・封入液
押圧部、５４ａ・・・大径部、６０・・・コイルスプリ
ング（緩衝部材）、６４・・・ナット部材、７０・・・
交流サーボモータ、７６・・・割クランプ（液圧作動盤
位置固定手段）。DESCRIPTION OF SYMBOLS 10 ... Clamping apparatus, 12 ... Fixed board, 14 ... Rear board, 18 ... Movable board, 20 ... Hydraulic operation board, 22
... fixed mold, 24 ... movable mold, 26 ... molding mold, 40 ... cylinder, 42 ... piston, 44
... closed chamber, 46 ... filled liquid, 48 ... sealed bag,
52: male screw member (male screw rod), 54: filled liquid pressing portion, 54a: large diameter portion, 60: coil spring (buffer member), 64: nut member, 70・ ・
AC servomotor, 76 ... split clamp (hydraulic operation panel position fixing means).

フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 45/26 - 45/44 B29C 45/64 - 45/68 B22D 17/26 Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) B29C 45/26-45/44 B29C 45/64-45/68 B22D 17/26

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 機台に固定盤と該固定盤と相対した一定
位置に後部盤を固定し、該固定盤と該後部盤の隅にタイ
バを緊張させるようにして固定し、該固定盤と該後部盤
との間にて該タイバに案内されて移動可能な可動盤を載
置した電動射出成形機の型締装置において、 該後部盤にサーボモータにより回転するナット部材を軸
支し、該ナット部材の内孔に雄ネジ桿の一端を螺合し、
該ナット部材の回転により、該雄ネジ桿を直進移動可能
にし、 一方該可動盤の後部に隣接して該可動盤と隙間を生じさ
せ得るように係合し、該タイバに案内されて移動する液
圧作動盤を設け、 該雄ネジ桿の先端を該液圧作動盤に係合させて該可動盤
を移動させるようにし、該可動盤を前進させ金型を閉じ
たとき、該液圧作動盤を該タイバの外周に設けた溝に係
合させ該液圧作動盤を固定させる液圧作動盤位置固定手
段を設け、 該液圧作動盤に液体を封入した密閉袋を内蔵させ、該密
閉袋内の封入液の増圧により変位し、該可動盤に圧締力
を生じさせるためのピストンを設け、 該液圧作動盤が該タイバに固定された後の該雄ネジ桿の
前進により、該密閉袋が該雄ネジ桿により押圧されて、
該ピストンに圧締力を作用するようにした緩衝部材を設
けたことを特徴とする電動射出成形機の型締装置。1. A fixed board and a rear panel fixed to a fixed position opposite to the fixed board on a machine base, and a tie bar is fixed to a corner of the fixed board and the rear panel so as to be tensioned. In a mold clamping device for an electric injection molding machine having a movable plate mounted thereon that is movable by being guided by the tie bar between the rear plate, a nut member rotated by a servomotor is supported on the rear plate, Screw one end of the male screw rod into the inner hole of the nut member,
The rotation of the nut member allows the male screw rod to move straight, while engaging with the movable plate adjacent to the rear of the movable plate so as to form a gap, and guided by the tie bar to move. A hydraulic operating panel is provided, and the tip of the male screw rod is engaged with the hydraulic operating panel to move the movable plate. When the movable plate is advanced and the mold is closed, the hydraulic operating plate is actuated. A hydraulic operating panel position fixing means for fixing the hydraulic operating panel by engaging the panel with a groove provided on the outer periphery of the tie bar; a sealing bag filled with liquid is built in the hydraulic operating panel; Displaced by increasing the pressure of the sealed liquid in the bag, a piston for generating a pressing force on the movable plate is provided, and the male screw rod advances after the hydraulic operating plate is fixed to the tie bar, The sealed bag is pressed by the male screw rod,
A mold clamping device for an electric injection molding machine, wherein a cushioning member is provided to apply a pressing force to the piston. 【請求項２】 前記密閉袋が伸縮自在な柔軟性材で形成
されたことを特徴とする請求項１記載の電動射出成形機
の型締装置。2. The mold clamping device for an electric injection molding machine according to claim 1, wherein said sealed bag is formed of a flexible material which can be extended and contracted. 【請求項３】 前記緩衝部材が、前記雄ネジ桿と前記液
圧作動盤との間に介装されたばね部材であることを特徴
とする請求項１または２記載の電動射出成形機の型締装
置。3. The electric injection molding machine according to claim 1, wherein the buffer member is a spring member interposed between the male screw rod and the hydraulic operating panel. apparatus.
JP5036862A 1993-02-25 1993-02-25 Mold clamping device for electric injection molding machine Expired - Lifetime JP2951140B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5036862A JP2951140B2 (en) 1993-02-25 1993-02-25 Mold clamping device for electric injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5036862A JP2951140B2 (en) 1993-02-25 1993-02-25 Mold clamping device for electric injection molding machine

Publications (2)

Publication Number Publication Date
JPH06246806A JPH06246806A (en) 1994-09-06
JP2951140B2 true JP2951140B2 (en) 1999-09-20

Family

ID=12481600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5036862A Expired - Lifetime JP2951140B2 (en) 1993-02-25 1993-02-25 Mold clamping device for electric injection molding machine

Country Status (1)

Country Link
JP (1) JP2951140B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Publication number Priority date Publication date Assignee Title
AU2231701A (en) * 1999-12-28 2001-07-09 Ube Machinery Corporation, Ltd. Mold clamping device, method of increasing/decreasing pressure for such device, and mold releasing method
DE50103545D1 (en) 2000-05-23 2004-10-14 Bosch Rexroth Ag DRIVING DEVICE, ESPECIALLY FOR THE CLOSING UNIT, THE INJECTION UNIT OR THE EJECTORS OF A PLASTIC INJECTION MOLDING MACHINE
DE10157373A1 (en) * 2001-11-22 2003-05-28 Bosch Rexroth Ag Drive unit for a clamping unit, injection unit or ejector of an injection molding machine has a hydraulic unit with two pistons of different diameters and an intermediate part whose movement can be blocked
AU2003245848A1 (en) * 2002-05-31 2003-12-19 Tox Pressotechnik Gmbh And Co. Kg Method for switching a hydraulic pressure intensifier
DE10354955A1 (en) * 2003-11-25 2005-06-30 Bosch Rexroth Ag Two-stage drive, e.g. for closing and sealing injection molding tool, includes mechanical locking for intermediate force-multiplying cylinder assembly
ITBO20040328A1 (en) * 2004-05-21 2004-08-21 Automa Spa MOLD DRIVE DEVICE
WO2008044259A2 (en) * 2006-10-12 2008-04-17 Leo Enrietti Machine with improved structure, functions and performances for the injection moulding of plastic materials
CN112496302A (en) * 2020-12-10 2021-03-16 宁川钧 Die-casting forming device convenient to remove

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Publication number Priority date Publication date Assignee Title
CN114103032A (en) * 2020-08-27 2022-03-01 株式会社沙迪克 Mold clamping device for injection molding machine
US20220063165A1 (en) * 2020-08-27 2022-03-03 Sodick Co., Ltd. Clamping apparatus of injection molding machine

Also Published As

Publication number Publication date
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