JP5681235B2 - Molding device for injection molding machine - Google Patents

Molding device for injection molding machine Download PDF

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JP5681235B2
JP5681235B2 JP2013118699A JP2013118699A JP5681235B2 JP 5681235 B2 JP5681235 B2 JP 5681235B2 JP 2013118699 A JP2013118699 A JP 2013118699A JP 2013118699 A JP2013118699 A JP 2013118699A JP 5681235 B2 JP5681235 B2 JP 5681235B2
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platen
reinforcing member
mold clamping
mold
stationary platen
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JP2014233955A (en
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信篤 土屋
信篤 土屋
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FANUC Corp
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    • 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
    • B29C45/66—Mould opening, closing or clamping devices mechanical
    • B29C45/661—Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
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Description

本発明は、固定盤変形機能を有する型締装置に関する。   The present invention relates to a mold clamping device having a fixed platen deformation function.

トグル式の型締装置では、固定盤とトグル機構が取り付けられた後部固定盤の四隅をタイバーで接続し、可動盤をタイバーに沿って固定盤方向にトグル機構により移動させて、可動盤に取り付けられた金型を固定盤に取り付けられた金型に押し付け、この押圧によりタイバーを伸ばし、タイバーの伸びによって金型に型締力を付与する。   In the toggle type mold clamping device, the four corners of the fixed platen and the rear fixed platen to which the toggle mechanism is attached are connected by tie bars, and the movable platen is moved along the tie bar in the direction of the fixed platen by the toggle mechanism and attached to the movable platen. The pressed mold is pressed against a mold attached to the fixed platen, the tie bar is extended by this pressing, and a mold clamping force is applied to the mold by the extension of the tie bar.

型締力バランスのわずかなズレが金型キャビティのバランスを崩し、成形品の精度に影響を及ぼす。そのため、金型に応じて、型締力バランスを調整する必要がある。そこで、固定盤と可動盤の両方に型締力伝達部材を設ける方法が取られている（特許文献１、２参照）。この方法は、型盤のたわみを伝達部材に移動させて、型締圧力分布を調整することが目的であり、タイバーごとの型締力は一定である。   A slight misalignment in the clamping force balance will disrupt the balance of the mold cavity and affect the accuracy of the molded product. Therefore, it is necessary to adjust the mold clamping force balance according to the mold. Therefore, a method of providing a mold clamping force transmission member on both the fixed platen and the movable platen is used (see Patent Documents 1 and 2). The purpose of this method is to adjust the mold clamping pressure distribution by moving the deflection of the mold plate to the transmission member, and the mold clamping force for each tie bar is constant.

特開２００７−２５３４５８号公報JP 2007-253458 A 特開２０１１−１８９５７５号公報JP 2011-189575 A

しかし、特許文献１に開示されたものは、金型取付盤のたわみを考慮し、補正した金型とそうでない金型の両方を使用可能とするために型締圧力分布を調整する機構であり、型締力を調整するものではない。また、特許文献２に開示されたものは、固定盤と金型取付盤の間に複数の調整部材を収納することにより、型締圧力を均一な状態にしているが、型締力の調整はできない。   However, what is disclosed in Patent Document 1 is a mechanism that adjusts the mold clamping pressure distribution so that both of the corrected mold and the other mold can be used in consideration of the deflection of the mold mounting board. It does not adjust the clamping force. In addition, what is disclosed in Patent Document 2 makes the mold clamping pressure uniform by storing a plurality of adjusting members between the fixed plate and the mold mounting plate. Can not.

そこで、本発明の目的は、上記従来技術の問題点に鑑み、固定盤の外側に補強部材を設けることで、各タイバーで発生させる型締力を変更できる射出成形機の型締装置を提供することである。   Accordingly, an object of the present invention is to provide a mold clamping device for an injection molding machine that can change the mold clamping force generated by each tie bar by providing a reinforcing member on the outer side of the fixed platen in view of the problems of the above-described prior art. That is.

本発明は、射出成形機の固定盤の一部に補強部材を取付け、補強部材の固定具合を調整することにより、固定盤の変形量を変更可能にする。さらに、固定盤の変形量を調整することにより、型締力バランスの調整を可能にする。   The present invention makes it possible to change the amount of deformation of the stationary platen by attaching a reinforcing member to a part of the stationary platen of the injection molding machine and adjusting the fixing degree of the reinforcing member. Furthermore, it is possible to adjust the mold clamping force balance by adjusting the deformation amount of the fixed platen.

本願の請求項１に係る発明は、固定側金型を保持する固定盤と、可動側金型を保持する可動盤と、後部固定盤とを備え、前記固定盤と前記後部固定盤とが互いに平行な複数本のタイバーによって結合され、前記可動盤は前記複数本のタイバーに沿って摺動しながら移動する射出成形機の型締装置において、
前記固定盤の反金型保持面側の該固定盤から離間した位置に設けた補強部材と、
前記固定盤と前記補強部材とを離間した状態で当接する当接部と、
前記当接部とは異なる位置において、前記固定盤と前記補強部材を接続する接続部材と、
を有し、該接続部材により型締力のバランス調整を行うことを特徴とする射出成形機の型締装置である。 The invention according to claim 1 of the present gun includes a stationary platen for holding a fixed mold, a movable platen for holding a movable mold, and a rear fixing plate, the fixing plate and said rear fixing plate is In a mold clamping device of an injection molding machine, which is coupled by a plurality of tie bars parallel to each other, and the movable plate moves while sliding along the plurality of tie bars .
A reinforcing member provided at a position spaced from the stationary platen of Hankin type holding surface side of the stationary platen,
A contact portion that contacts the fixed plate and the reinforcing member in a separated state;
At a position different from the contact portion, a connection member that connects the fixing plate and the reinforcing member ;
A mold clamping device for an injection molding machine, wherein the balance of mold clamping force is adjusted by the connecting member.

請求項２に係る発明は、前記当接部は、前記補強部材に設けられており、前記固定盤に当接する請求項１に記載の射出成形機の型締装置である。
請求項３に係る発明は、前記当接部は、前記固定盤に設けられており、前記補強部材に当接する請求項１に記載の射出成形機の型締装置である。
請求項４に係る発明は、前記当接部は、前記固定盤と前記補強部材の両方に設けられており、双方の当接部が当接する請求項１に記載の射出成形機の型締装置。 The invention according to claim 2, wherein the abutment, the provided on the reinforcing member, a mold clamping apparatus of an injection molding machine according to claim 1 which abuts the stationary platen.
The invention according to claim 3, wherein the abutment portion is provided on the stationary platen, a mold clamping apparatus of an injection molding machine according to claim 1 which abuts the reinforcing member.
The invention according to claim 4, wherein the contact portion, the stationary platen and is provided on both of said reinforcing member, an injection molding machine mold clamping device according to claim 1, abutment both contact .

本発明により、固定盤の外側に補強部材を設けることで、各タイバーで発生させる型締力を変更できる射出成形機の型締装置を提供できる。   According to the present invention, it is possible to provide a mold clamping device of an injection molding machine that can change the mold clamping force generated by each tie bar by providing a reinforcing member on the outside of the fixed platen.

本発明の実施形態の概要図１である。FIG. 1 is a schematic diagram 1 of an embodiment of the present invention. 型締時の型盤の変形と補強部材による固定盤の変形を示す図である。It is a figure which shows the deformation | transformation of the mold platen at the time of mold clamping, and the deformation | transformation of the stationary platen by a reinforcement member. 本発明の実施形態の概要図２である。FIG. 3 is a schematic diagram 2 of an embodiment of the present invention. ベースに固定された固定盤の変形図である。It is a deformation | transformation figure of the stationary platen fixed to the base. 固定盤（補強部材なし）を説明する図である。It is a figure explaining a fixed platen (there is no reinforcement member). 補強部材の実施例１である。It is Example 1 of a reinforcement member. 補強部材の実施例２である。It is Example 2 of a reinforcement member. 当接部が固定盤に設けられている概要図である。It is a schematic diagram in which the contact part is provided in the fixed platen. 当接部が固定盤と補強部材に設けられている概要図である。It is a schematic diagram with which the contact part is provided in the stationary platen and the reinforcement member.

以下、本発明の実施形態について図面と共に説明する。
まず、射出成形機の型締装置を説明する。図１は本発明の実施形態の概要図１である。固定盤１と後部固定盤３の四隅はタイバー４によって結合され、後部固定盤３に取り付けられたトグル機構５の他端に可動盤２が取り付けられ、図示しないモータ等の駆動源によってトグル機構５のクロスヘッド（図示せず）を前進させて、トグルリンク（図示せず）を伸張させて可動盤２を、タイバー４に沿って摺動させながら移動させ、固定盤１に取り付けられた固定側金型６ａに可動盤２に取り付けられた可動側金型６ｂを当接させ、さらに、トグルリンクを伸張させることによって、タイバー４を伸ばし、このタイバー４の伸びの反力で型締力を発生させる。固定側金型６ａと可動側金型６ｂを合わせて金型６という。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a mold clamping device of an injection molding machine will be described. FIG. 1 is a schematic diagram 1 of an embodiment of the present invention. The four corners of the fixed platen 1 and the rear fixed platen 3 are coupled by a tie bar 4, the movable platen 2 is attached to the other end of the toggle mechanism 5 attached to the rear fixed platen 3, and the toggle mechanism 5 is driven by a drive source such as a motor (not shown). The cross head (not shown) is moved forward, the toggle link (not shown) is extended, and the movable platen 2 is moved while sliding along the tie bar 4, and the fixed side attached to the fixed platen 1 is attached. The movable side mold 6b attached to the movable platen 2 is brought into contact with the mold 6a, and further, the tie bar 4 is extended by extending the toggle link, and the mold clamping force is generated by the reaction force of the extension of the tie bar 4. Let me. The fixed mold 6a and the movable mold 6b are collectively referred to as a mold 6.

本発明の実施形態の型締装置は、固定盤１の反金型保持面側の固定盤１から離間した位置に設けた補強部材７と、固定盤１と補強部材７とを離間した状態で当接する当接部８と、当接部８とは異なる位置において、固定盤１と補強部材７を接続する接続部材（例えばねじ９）とを有し、該接続部材により型締力のバランス調整を行うことを特徴とする。   The mold clamping device according to the embodiment of the present invention is in a state in which the reinforcing member 7 provided at a position separated from the stationary platen 1 on the side opposite to the mold holding surface of the stationary platen 1 is separated from the stationary platen 1 and the reinforcing member 7. A contact portion 8 that abuts, and a connection member (for example, a screw 9) that connects the fixed platen 1 and the reinforcing member 7 at a position different from the contact portion 8, and balance adjustment of the clamping force by the connection member It is characterized by performing.

図１のように、固定盤１もしくは固定盤１に取付けられた部材に開けられたねじ穴に、補強部材７の貫通穴を通して接続部材であるねじ９を取付ける。ねじ９を締め込むと、補強部材７の当接部８が支点となり、補強部材７が固定盤１を引っ張って変形量を変更できる。   As shown in FIG. 1, a screw 9 as a connecting member is attached to a screw hole formed in the fixed platen 1 or a member attached to the fixed platen 1 through a through hole of the reinforcing member 7. When the screw 9 is tightened, the contact portion 8 of the reinforcing member 7 becomes a fulcrum, and the reinforcing member 7 can pull the stationary platen 1 to change the deformation amount.

図２は型締時の型盤の変形と補強部材７による固定盤１の変形を示す図である。図２の型締時には、トグル機構５の伸長により、固定盤１は破線のようにたわみ、タイバー４は伸びる。ねじ９の軸力調整が行われていた場合、固定盤１は実線のようにたわみ量が少なくなるため、その分タイバーの伸び量が増え、型締力が増大する。   FIG. 2 is a view showing deformation of the mold platen during mold clamping and deformation of the fixed platen 1 by the reinforcing member 7. At the time of mold clamping in FIG. 2, due to the extension of the toggle mechanism 5, the fixed platen 1 bends as shown by a broken line, and the tie bar 4 extends. When the axial force of the screw 9 has been adjusted, the amount of deflection of the stationary platen 1 is reduced as shown by the solid line, so that the amount of extension of the tie bar increases and the mold clamping force increases accordingly.

また、固定盤１を押して変形させる場合は、図３のように、固定盤１に取付けたねじ９の端を補強部材７に押し付ければよい。接続部材をねじ９ではなく油圧シリンダにしてもよく、固定盤１を押すことも引くことも可能である。ただし、押す場合は、当接部８を固定盤１と補強部材７に固定しておく必要があり、図３では補強部材７が当接部８において固定盤１に固定されている。   When the fixed platen 1 is pushed and deformed, the end of the screw 9 attached to the fixed platen 1 may be pressed against the reinforcing member 7 as shown in FIG. The connecting member may be a hydraulic cylinder instead of the screw 9, and the fixed platen 1 can be pushed or pulled. However, when pushing, it is necessary to fix the contact portion 8 to the fixed platen 1 and the reinforcing member 7, and the reinforcing member 7 is fixed to the fixed platen 1 at the contact portion 8 in FIG. 3.

図１〜図３の場合、固定盤１はガイドやローラの上に載っているが、固定盤１がベース（図示せず）に固定されている場合は、図４の破線のように固定盤１の下部はほとんど変形しない。そのため、実線のように固定盤１の上部の変形量を調整することにより、型締力バランスを調整する。   In the case of FIGS. 1 to 3, the fixed platen 1 is placed on a guide or a roller, but when the fixed platen 1 is fixed to a base (not shown), the fixed platen is as shown by the broken line in FIG. 4. The lower part of 1 hardly deforms. Therefore, the mold clamping force balance is adjusted by adjusting the deformation amount of the upper part of the fixed platen 1 as shown by the solid line.

次に、補強部材７を図６〜図９を用いて説明する。図６は補強部材の実施例１を示している。補強部材７は長方形状の部材であって、長軸方向の両端部に固定盤１にねじ込まれるねじ９が装着される貫通穴が設けられている。また、中央部には当接部８が設けられている。当接部８を補強部材７に一体として形成してもよいし、別部材として構成し、ボルトなどの固定手段により補強部材７に固定してもよい。この補強部材７を、射出ノズルが挿通する通し穴１０の両側に位置するように、ねじ９により固定盤１に取り付ける。各タイバー４の付近でねじ９の締付けを行うことができる。   Next, the reinforcing member 7 will be described with reference to FIGS. FIG. 6 shows a first embodiment of the reinforcing member. The reinforcing member 7 is a rectangular member and is provided with through-holes in which screws 9 to be screwed into the stationary platen 1 are mounted at both ends in the long axis direction. A contact portion 8 is provided at the center. The contact portion 8 may be formed integrally with the reinforcing member 7, or may be formed as a separate member and fixed to the reinforcing member 7 by fixing means such as a bolt. The reinforcing member 7 is attached to the stationary platen 1 with screws 9 so as to be positioned on both sides of the through hole 10 through which the injection nozzle is inserted. The screw 9 can be tightened in the vicinity of each tie bar 4.

図７は、補強部材の実施例２を示している。補強部材７は図７のように１枚でもよい。この場合、補強部材７には、ノズル進入用に通し穴１１が設けられている。通し穴１１は、補強部材７に固定盤１に設けられた通し穴１０に対応する位置に設けられる。また、当接部８が、通し穴１１の両側に設けられ、四隅にはねじ９を挿通する貫通穴が設けられている。   FIG. 7 shows a second embodiment of the reinforcing member. One reinforcing member 7 may be used as shown in FIG. In this case, the reinforcing member 7 is provided with a through hole 11 for entering the nozzle. The through hole 11 is provided at a position corresponding to the through hole 10 provided in the fixing plate 1 in the reinforcing member 7. Further, the contact portions 8 are provided on both sides of the through hole 11, and through holes through which the screws 9 are inserted are provided at the four corners.

当接部８は図８のように固定盤の一部分でもよく、図９のように固定盤と補強部材の両方に設けてもよい。また、接続部材として、ねじ９の他に、油圧シリンダや油圧ジャッキを用いてもよい。   The contact portion 8 may be a part of the fixed plate as shown in FIG. 8, or may be provided on both the fixed plate and the reinforcing member as shown in FIG. In addition to the screw 9, a hydraulic cylinder or a hydraulic jack may be used as the connecting member.

１ 固定盤
２ 可動盤
３ 後部固定盤
４ タイバー
５ トグル機構
６ 金型
７ 補強部材
８ 当接部
９ ねじ
１０ 通し穴
１１ 通し穴 DESCRIPTION OF SYMBOLS 1 Fixed platen 2 Movable platen 3 Back fixed platen 4 Tie bar 5 Toggle mechanism 6 Mold 7 Reinforcement member 8 Contact part 9 Screw 10 Through hole 11 Through hole

Claims (4)

固定側金型を保持する固定盤と、可動側金型を保持する可動盤と、後部固定盤とを備え、前記固定盤と前記後部固定盤とが互いに平行な複数本のタイバーによって結合され、前記可動盤は前記複数本のタイバーに沿って摺動しながら移動する射出成形機の型締装置において、
前記固定盤の反金型保持面側の該固定盤から離間した位置に設けた補強部材と、
前記固定盤と前記補強部材とを離間した状態で当接する当接部と、
前記当接部とは異なる位置において、前記固定盤と前記補強部材を接続する接続部材と、
を有し、該接続部材により型締力のバランス調整を行うことを特徴とする射出成形機の型締装置。 A stationary platen that holds the stationary side mold, a movable platen that holds the movable side mold, and a rear stationary platen, wherein the stationary platen and the rear stationary platen are coupled by a plurality of parallel tie bars; In the mold clamping device of the injection molding machine, the movable plate moves while sliding along the plurality of tie bars .
A reinforcing member provided at a position spaced from the stationary platen of Hankin type holding surface side of the stationary platen,
A contact portion that contacts the fixed plate and the reinforcing member in a separated state;
At a position different from the contact portion, a connection member that connects the fixing plate and the reinforcing member ;
A mold clamping apparatus for an injection molding machine, wherein the balance of mold clamping force is adjusted by the connecting member. 前記当接部は、前記補強部材に設けられており、前記固定盤に当接する請求項１に記載の射出成形機の型締装置。 The abutting portion, the provided on the reinforcing member, the mold clamping device of an injection molding machine according to claim 1 which abuts the stationary platen. 前記当接部は、前記固定盤に設けられており、前記補強部材に当接する請求項１に記載の射出成形機の型締装置。 The abutting portion is provided on the stationary platen, the mold clamping device of an injection molding machine according to claim 1 which abuts the reinforcing member. 前記当接部は、前記固定盤と前記補強部材の両方に設けられており、双方の当接部が当接する請求項１に記載の射出成形機の型締装置。 The mold clamping device for an injection molding machine according to claim 1, wherein the abutting portion is provided on both the fixed platen and the reinforcing member, and both abutting portions abut.
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