JP2001260198A - Method and apparatus for adjusting clamping force of toggle type mold clamping device - Google Patents

Method and apparatus for adjusting clamping force of toggle type mold clamping device

Info

Publication number
JP2001260198A
JP2001260198A JP2000073715A JP2000073715A JP2001260198A JP 2001260198 A JP2001260198 A JP 2001260198A JP 2000073715 A JP2000073715 A JP 2000073715A JP 2000073715 A JP2000073715 A JP 2000073715A JP 2001260198 A JP2001260198 A JP 2001260198A
Authority
JP
Japan
Prior art keywords
mold
mold clamping
clamping force
thickness
tie bar
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.)
Granted
Application number
JP2000073715A
Other languages
Japanese (ja)
Other versions
JP3939067B2 (en
Inventor
Takafumi Nishibe
隆文 西部
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP2000073715A priority Critical patent/JP3939067B2/en
Publication of JP2001260198A publication Critical patent/JP2001260198A/en
Application granted granted Critical
Publication of JP3939067B2 publication Critical patent/JP3939067B2/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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7653—Measuring, controlling or regulating mould clamping forces
    • 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
    • B29C45/1751—Adjustment means allowing the use of moulds of different thicknesses
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76505—Force
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76702—Closure or clamping device

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide a method for adjusting the mold clamping force of a toggle type mold clamping device which can make the mold clamping force constant even when the thickness of an optional mold differs from that of a standard mold and an apparatus for the method. SOLUTION: The difference between the thickness Tx of an optional mold and the thickness T0 of the standard mold is obtained. The ratio of a deviation to the effective length L0 of the tie-bar of the standard mold α= 1+(Tx-T0)/L0} is obtained, and the ratio α is multiplied by the mold clamping stroke S0 of the standard mold to obtain the mold clamping stroke SX of an optional mold.

Description

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

【０００１】[0001]

【発明の属する技術分野】本発明は、射出成形機やダイ
カスト成形機に用いられるトグル式型締装置の型締力調
整方法およびその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for adjusting a mold clamping force of a toggle mold clamping device used in an injection molding machine or a die casting molding machine.

【０００２】[0002]

【従来の技術】通常、射出成形機は、型閉じされた金型
のキャビティ内に溶融樹脂を高圧で射出することより所
定形状の製品を得るためのものである。この様な射出成
形機は、高圧の溶融樹脂が金型から漏れ出さないように
充分な型締力を加えることのできる型締装置を必要と
し、この型締装置としてトグル式型締装置が広く用いら
れている。この型締装置には、使用される金型、樹脂、
射出条件等によって自在に型締力を変更できる機能が要
求される。2. Description of the Related Art In general, an injection molding machine is intended to obtain a product having a predetermined shape by injecting a molten resin at a high pressure into a cavity of a closed mold. Such an injection molding machine requires a mold clamping device capable of applying a sufficient mold clamping force so that high-pressure molten resin does not leak from the mold, and a toggle-type mold clamping device is widely used as this mold clamping device. Used. This mold clamping device includes a mold, resin,
A function that can freely change the mold clamping force according to the injection conditions and the like is required.

【０００３】この様に構成された型締装置において所定
の型締力に調整するには、まず一旦型を開いた後、即
ち、トグル機構部と連結されているクロスヘッドを型締
シリンダで後退させた後、型厚調整を行って、型厚が実
金型厚さ−γｍｍとなるまで、型締シリンダが固定され
ているエンドハウジングを移動する。なお、型厚の測定
及び制御は型厚位置検出センサにて行う。In order to adjust the clamping force to a predetermined value in the mold clamping device constructed as described above, first, the mold is opened, that is, the cross head connected to the toggle mechanism is retracted by the mold clamping cylinder. After this, the mold thickness is adjusted, and the end housing to which the mold clamping cylinder is fixed is moved until the mold thickness becomes the actual mold thickness -γmm. The measurement and control of the mold thickness are performed by a mold thickness position detection sensor.

【０００４】次に、自動型締力調整を行うが、これにつ
いては、例えば、特公昭６１−３５９２４号公報に記載
されている方法について図１を参照して説明する。Next, automatic mold clamping force adjustment is performed. For example, a method described in Japanese Patent Publication No. 61-35924 will be described with reference to FIG.

【０００５】所定型締力を発生させる為の金型タッチ点
でのクロスヘッドの位置Ａは理論上定まっている。そこ
で、上記型厚調整が終了した状態で金型１３を当接さ
せ、その時のクロスヘッド９の位置と、所定型締力を発
生させる為の金型タッチ点での理論上のクロスヘッドの
位置Ａとの差を計算し、その差分だけ型締シリンダ１０
に超低圧を作用させてエンドハウジング３を型厚調整装
置１４で後退させ、ハウジング３に対して相対的にクロ
スヘッド９を前進させ、理論上定められた所定型締力を
発生させる為の金型タッチ点でのクロスヘッドの位置Ａ
に来たら型厚調整装置１４を停止することにより所定の
型締力調整が完了する。なお、前記「金型タッチ点」と
は、金型を当接させてもトグル機構が伸び切っていない
状態をいう。[0005] The position A of the crosshead at the die touch point for generating a predetermined die clamping force is theoretically determined. Then, the mold 13 is brought into contact with the mold thickness adjustment, and the position of the crosshead 9 at that time and the theoretical position of the crosshead at the mold touch point for generating a predetermined mold clamping force. A and calculate the difference from the mold clamping cylinder 10 by the difference.
The end housing 3 is retracted by the mold thickness adjusting device 14 by applying an extremely low pressure to the cross head 9 relative to the housing 3 to generate a theoretically determined predetermined clamping force. Crosshead position A at mold touch point
Then, the mold thickness adjusting device 14 is stopped to complete the predetermined mold clamping force adjustment. Note that the “mold touch point” refers to a state where the toggle mechanism is not fully extended even when the mold is brought into contact.

【０００６】その後、型締シリンダ１０でクロスヘッド
９を前進させてトグル機構部８を延ばしてタイバー４に
歪みを与えて型締力を発生させる。この時の型締シリン
ダ１０のストロークが型締ストロークとなる。Thereafter, the cross head 9 is advanced by the mold clamping cylinder 10 to extend the toggle mechanism 8 to apply a strain to the tie bar 4 to generate a mold clamping force. The stroke of the mold clamping cylinder 10 at this time is the mold clamping stroke.

【０００７】図３は、従来の型締調整方法における型締
力と型締ストロークとの関係を示す型締力テーブル線図
である。同図には、縦軸に型締力Ｆ、横軸に型締ストロ
ークＳが目盛られ、その関係が曲線で示されている。こ
の型締力テーブル線図は、ある基準金型の金型厚さで型
締力調整を行って設定され、機械のコントローラに予め
記憶させてある。この記憶されている基準型締力Ｆ0に
対する型締ストロークＳ0は、他の型厚が異なる金型の
型締力調整にもそのまま適用される。FIG. 3 is a diagram of a mold clamping force table showing the relationship between the mold clamping force and the mold clamping stroke in the conventional mold clamping adjustment method. In the drawing, the vertical axis indicates the mold clamping force F, and the horizontal axis indicates the mold clamping stroke S, and the relationship is shown by a curve. This mold clamping force table diagram is set by adjusting the mold clamping force with the mold thickness of a certain reference mold, and is stored in advance in the controller of the machine. Clamping stroke S 0 with respect to the reference mold clamping force F 0, which is the storage is directly applicable to a mold clamping force adjustment of the mold other types having different thicknesses.

【０００８】この線図により、任意の設定型締力Ｆに相
当する型締ストロークＳが型締シリンダに与えられ、ク
ロスヘッドが移動して型締力が発生する。なお、型締ス
トロークＳはエンドハウジングとクロスヘッド間に設け
られたクロスヘッド位置検出センサにより位置制御され
る。According to this diagram, a mold clamping stroke S corresponding to an arbitrary set mold clamping force F is given to the mold clamping cylinder, and the crosshead moves to generate a mold clamping force. The position of the mold clamping stroke S is controlled by a crosshead position detection sensor provided between the end housing and the crosshead.

【０００９】[0009]

【発明が解決しようとする課題】従来の型締力調整方法
では、基準金型の金型厚さにて予め設定された型締力テ
ーブル線図に従い、型締ストロークが決定されている。
このストロークは、金型厚さの変化に関係なく、設定型
締力に相関した値となっており、任意の設定型締力にお
いて、金型厚さが変化しても型締ストロークは変わらな
い。In the conventional mold clamping force adjusting method, the mold clamping stroke is determined in accordance with a mold clamping force table diagram set in advance by the mold thickness of the reference mold.
This stroke is a value that is correlated with the set mold clamping force regardless of the change in the mold thickness, and the mold clamping stroke does not change even if the mold thickness changes at an arbitrary set mold clamping force. .

【００１０】図１に示すように、金型厚さＴ、タイバー
有効長さＬ、型締ストロークＳとし、この時、実際に発
生する型締力をＦとすると、型締力Ｆは数式１で表され
る。As shown in FIG. 1, when a mold thickness T, a tie bar effective length L, and a mold clamping stroke S are set, and a mold clamping force actually generated at this time is F, the mold clamping force F is expressed by the following equation (1). It is represented by

【００１１】[0011]

【数１】Ｆ＝Ａ・Ｅ・λ／Ｌ 但し、Ａ：タイバー断面積、Ｅ：タイバーの縦弾性係
数、λ：型締ストロークによるタイバー伸び、Ｌ：タイ
バー有効長 ここで、基準金型の金型厚さ（以下、基準型厚とい
う。）Ｔ0、タイバー有効長Ｌ0、型締ストロークＳ0、
タイバー伸びλ0、型締力Ｆ0とする。F = A · E · λ / L where A: Tie bar cross-sectional area, E: Tie bar longitudinal elastic modulus, λ: Tie bar elongation due to mold clamping stroke, L: Tie bar effective length, where: Mold thickness (hereinafter referred to as reference mold thickness) T 0 , tie bar effective length L 0 , mold clamping stroke S 0 ,
The tie bar elongation is λ 0 and the mold clamping force is F 0 .

【００１２】また、任意金型の金型厚さ（以下、任意型
厚という。）ＴX、タイバー有効長ＬX、型締ストローク
ＳX、タイバー伸びλX、型締力ＦXとする。The mold thickness (hereinafter, referred to as an arbitrary mold thickness) T x , the effective tie bar length L X , the mold clamping stroke S X , the extension of the tie bar λ X , and the mold clamping force F X are given.

【００１３】なお、型締ストロークＳは変化しないの
で、ＳX＝Ｓ0となり、タイバー伸びλは型締ストローク
Ｓに比例するので、λX＝λ0となる。Since the mold clamping stroke S does not change, S X = S 0 , and the tie bar elongation λ is proportional to the mold clamping stroke S, so that λ X = λ 0 .

【００１４】従って、図３に示すように、 （ａ）任意型厚ＴX1が基準型厚Ｔ0よりも小さい時（Ｔ
X1＜Ｔ0）は、ＬX1＜Ｌ0となるから、数式１より、実際
の型締力ＦX1は、基準の型締力Ｆ0より大きくなる。 （ｂ）任意型厚ＴX2が基準型厚Ｔ0よりも大きい時（Ｔ
X2＞Ｔ0）は、ＬX 2＞Ｌ0となるから、数式１より、実際
の型締力ＦX2は、基準の型締力Ｆ0より小さくなる。Therefore, as shown in FIG. 3, (a) when the arbitrary mold thickness T X1 is smaller than the reference mold thickness T 0 (T
X1 <T 0), since the L X1 <L 0, from Equation 1, the actual clamping force F X1 is larger than the clamping force F 0 of the reference. (B) When the arbitrary mold thickness T X2 is larger than the reference mold thickness T 0 (T
X2> T 0), since the L X 2> L 0, from Equation 1, the actual clamping force F X2 is smaller than the clamping force F 0 of the reference.

【００１５】そのため、基準金型よりも小さい金型を使
用する時は、過大型締力が発生し、大きい金型を使用す
る時は型締力不足となるなどの問題があった。Therefore, when a mold smaller than the reference mold is used, there is a problem that an excessively large clamping force is generated, and when a large mold is used, the mold clamping force becomes insufficient.

【００１６】本発明は、上記従来の技術の問題点を解決
するためになされたものであって、任意金型の金型厚さ
が基準金型の金型厚さと異なっていても、発生型締力を
一定とすることができるトグル式型締装置の型締力調整
方法およびその装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. Even if the mold thickness of an arbitrary mold is different from the mold thickness of a reference mold, the generation mold is not required. It is an object of the present invention to provide a mold clamping force adjusting method for a toggle-type mold clamping device capable of maintaining a constant clamping force and a device therefor.

【００１７】[0017]

【課題を解決するための手段】本発明によるトグル式型
締装置の型締力調整方法は、任意金型の金型厚さ
（Ｔ X）と基準金型の金型厚さ（Ｔ0）との差を求め、基
準金型のタイバー有効長さＬ 0に対する増減比αである
｛１＋（ＴX−Ｔ0）／Ｌ0｝を求め、この増減比αを基
準金型の型締ストローク（Ｓ0）に掛けて、任意金型の
型締ストローク（ＳX）とすることを特徴とする。これ
により、任意金型の金型厚さが基準金型の金型厚さと異
なっていてもタイバー歪み（λ／Ｌ）が一定となるの
で、型締力を一定にすることができる。SUMMARY OF THE INVENTION A toggle type according to the present invention.
The method of adjusting the mold clamping force of the clamping device depends on the mold thickness of any mold.
(T X) And the mold thickness (T0) And find the difference
Tie bar effective length L of semi-mold 0Is the increase / decrease ratio α
｛1+ (TX-T0) / L0｝, And based on this increase / decrease ratio α
Mold clamping stroke of semi-mold (S0) Over any mold
Mold clamping stroke (SX). this
The mold thickness of the arbitrary mold differs from the mold thickness of the reference mold.
Tie bar distortion (λ / L) is constant
Thus, the mold clamping force can be made constant.

【００１８】[0018]

【発明の実施の形態】本発明の実施の形態を実施例を基
に図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings.

【００１９】図１はトグル式型締装置を用いた射出成形
機の構成図である。FIG. 1 is a block diagram of an injection molding machine using a toggle-type mold clamping device.

【００２０】射出成形機のベッド１上には、固定盤２
と、ベッド１上で摺動自在なエンドハウジング３と、固
定盤２とエンドハウジング３の間に設けられている可動
盤６とが配置されている。固定盤２とエンドハウジング
３との間はそれら四隅部において４本の平行なタイバー
４によって連結される。そのタイバー４の一端は固定盤
２に固定され、その他端はネジ部４ｂが形成されてい
る。このネジ部４ｂはエンドハウジング３を貫通すると
共にネジ部４ｂの端部から挿入されたタイバーナット５
とネジ結合されている。このタイバーナット５はエンド
ハウジング３の外方に配置され、このタイバーナット５
を型厚調整装置１４で回転することによりエンドハウジ
ング３をタイバー４に沿って必要に応じた量だけ軸方向
に移動させることができる。従ってタイバーナット５の
回転量に応じてエンドハウジング３を固定盤２に対して
接近、または離間する方向に移動させることができる。On the bed 1 of the injection molding machine, a fixed plate 2
An end housing 3 slidable on the bed 1 and a movable plate 6 provided between the fixed plate 2 and the end housing 3 are arranged. The fixed platen 2 and the end housing 3 are connected by four parallel tie bars 4 at their four corners. One end of the tie bar 4 is fixed to the fixed platen 2 and the other end is formed with a screw portion 4b. The screw part 4b penetrates the end housing 3 and is inserted from the end of the screw part 4b.
And screwed. The tie bar nut 5 is disposed outside the end housing 3, and the tie bar nut 5
By rotating the end housing 3 with the mold thickness adjusting device 14, the end housing 3 can be moved in the axial direction along the tie bar 4 by a required amount. Therefore, the end housing 3 can be moved toward or away from the fixed platen 2 in accordance with the rotation amount of the tie bar nut 5.

【００２１】前記エンドハウジング３と可動盤６との間
には金型１３を締め付けるリンクを構成するトグル機構
部８が設けられている。このトグル機構部８は、エンド
ハウジング３に固定されている型締シリンダ１０のピス
トンロッド１１の先端に連結されているクロスヘッド９
により屈伸される。A toggle mechanism 8 is provided between the end housing 3 and the movable platen 6 to form a link for fastening the mold 13. The toggle mechanism 8 includes a crosshead 9 connected to a tip of a piston rod 11 of a mold clamping cylinder 10 fixed to the end housing 3.
Bend and stretch.

【００２２】図２は、本発明による型締力と型締ストロ
ークとの関係を示す型締力テーブル線図である。同図に
は、縦軸に型締力Ｆ、横軸に型締ストロークＳが目盛ら
れ、その関係が曲線で示されている。この型締力テーブ
ル線図は、ある基準金型の金型厚さで型締力調整を行っ
て設定され、機械のコントローラに予め記憶させてあ
る。FIG. 2 is a diagram of a mold clamping force table showing the relationship between the mold clamping force and the mold clamping stroke according to the present invention. In the drawing, the vertical axis indicates the mold clamping force F, and the horizontal axis indicates the mold clamping stroke S, and the relationship is shown by a curve. This mold clamping force table diagram is set by adjusting the mold clamping force with the mold thickness of a certain reference mold, and is stored in advance in the controller of the machine.

【００２３】この線図により、任意の設定型締力Ｆに相
当する型締ストロークＳが型締シリンダ１０に与えら
れ、クロスヘッド９が移動して型締力が発生する。な
お、型締ストロークＳはエンドハウジング３とクロスヘ
ッド９間に設けられたクロスヘッド位置検出センサ７に
より位置制御される。According to this diagram, a mold clamping stroke S corresponding to an arbitrary set mold clamping force F is applied to the mold clamping cylinder 10, and the crosshead 9 moves to generate a mold clamping force. The position of the mold clamping stroke S is controlled by a crosshead position detection sensor 7 provided between the end housing 3 and the crosshead 9.

【００２４】本発明による型締力調整方法は、基準金型
の型締ストロークに対して、任意型厚によって変化する
係数を乗することによって、任意金型の型締ストローク
を定め、実際に発生する型締力を一定にするものであ
る。In the method for adjusting the mold clamping force according to the present invention, the mold clamping stroke of an arbitrary mold is determined by multiplying the mold clamping stroke of the reference mold by a coefficient which varies depending on the arbitrary mold thickness. This makes the clamping force to be constant.

【００２５】次に、本型締力調整方法について詳しく説
明する。Next, the method for adjusting the mold clamping force will be described in detail.

【００２６】図１に示すように、金型厚さＴ、タイバー
有効長さＬ、型締ストロークＳとし、この時、実際に発
生する型締力をＦとすると、型締力Ｆは数式２で表され
る。As shown in FIG. 1, when the mold thickness T, the tie bar effective length L, and the mold clamping stroke S are given, and the mold clamping force actually generated at this time is F, the mold clamping force F is expressed by the following equation (2). It is represented by

【００２７】[0027]

【数２】Ｆ＝Ａ・Ｅ・λ／Ｌ 但し、Ａ：タイバー断面積、Ｅ：タイバーの縦弾性係
数、λ：型締ストロークによるタイバー伸び、Ｌ：タイ
バー有効長 ここで、基準型厚Ｔ0、タイバー有効長Ｌ0、型締ストロ
ークＳ0、タイバー伸びλ0、発生型締力Ｆ0とし、ま
た、任意型厚さＴX、タイバー有効長ＬX、型締ストロー
クＳX、タイバー伸びλX、発生型締力ＦXとする。F = A · E · λ / L where A: Tie bar cross-sectional area, E: Tie bar longitudinal elastic modulus, λ: Tie bar elongation due to mold clamping stroke, L: Tie bar effective length, where reference die thickness T 0 , tie bar effective length L 0 , mold clamping stroke S 0 , tie bar elongation λ 0 , generated mold clamping force F 0, and arbitrary mold thickness T X , tie bar effective length L X , mold clamping stroke S X , tie bar elongation Let λ X be the generated mold clamping force F X.

【００２８】数式２により、基準金型と任意金型の型締
力は数式３の様になる。According to Equation 2, the mold clamping force of the reference mold and the arbitrary mold is as shown in Equation 3.

【００２９】[0029]

【数３】基準型厚時の型締力Ｆ0＝Ａ・Ｅ・λ0／Ｌ0 任意型厚時の型締力ＦX＝Ａ・Ｅ・λX／ＬX 型締力のバラツキを無くすためには、Ｆ0＝ＦXとしなけ
ればならないので、Ａ・Ｅ・λ0／Ｌ0＝Ａ・Ｅ・λX／
ＬXとなり、λ0／Ｌ0＝λX／ＬXとなり、任意の型厚時
のタイバー伸びλXは、λX＝λ0・ＬX／Ｌ0となる。[Equation 3] Clamping force F 0 = A · E · λ 0 / L 0 at standard mold thickness F X = A · E · λ X / L X Variation of mold clamping force at arbitrary mold thickness In order to eliminate it, F 0 = F X , so that A · E · λ 0 / L 0 = A · E · λ X /
L X becomes, λ 0 / L 0 = λ X / L X , and the tie bar extends lambda X when any mold thickness becomes λ X = λ 0 · L X / L 0.

【００３０】任意型厚時のタイバー有効長ＬXは、金型
厚さＴXの増減によって変わるので、ＬX＝Ｌ0＋（ＴX−
Ｔ0）となる。Since the tie bar effective length L X at an arbitrary mold thickness changes depending on the increase or decrease of the mold thickness T X , L X = L 0 + (T X −
T 0 ).

【００３１】従って、λX＝λ0・｛Ｌ0＋（ＴX−
Ｔ0）｝／Ｌ0となり、λX＝λ0・｛１＋（ＴX−Ｔ0）／
Ｌ0｝となる。Therefore, λ X = λ 0 ｛L 0 + (T X −
T 0 )｝ / L 0 , and λ X = λ 0 ｛1+ (T X −T 0 ) /
L 0 }.

【００３２】この時の｛１＋（ＴX−Ｔ0）／Ｌ0｝を係
数αとすると、λX＝λ0・αとなり、また、たタイバー
伸びは、型締ストロークに比例するので、ＳX＝Ｓ0・α
となる。[0032] When the coefficient α {1+ (T X -T 0 ) / L 0} at this time, λ X = λ 0 · α becomes, also, tie bar elongation was is proportional to the clamping stroke, S X = S 0 · α
Becomes

【００３３】つまり、任意型厚ＴXを、エンドハウジン
グ３とベット１間に設けられている型厚位置検出センサ
１２で読み取り、基準型厚Ｔ0との差（ＴX−Ｔ0）を計
算して、基準タイバー有効長さＬ0に対する増減比αを
求め、これを基準型締ストロークＳ0に掛けてやり、任
意型厚時の型締ストロークＳXを求める。That is, the arbitrary mold thickness T X is read by the mold thickness position detecting sensor 12 provided between the end housing 3 and the bed 1, and the difference (T X -T 0 ) from the reference mold thickness T 0 is calculated. Then, an increase / decrease ratio α with respect to the reference tie bar effective length L 0 is obtained, and is multiplied by the reference mold clamping stroke S 0 to obtain a mold clamping stroke S X at an arbitrary mold thickness.

【００３４】図２に、任意型厚ＴX1，ＴX2に応じて、型
締ストロークＳX1，ＳX2を変化させた状態を示す。FIG. 2 shows a state in which the mold clamping strokes S X1 and S X2 are changed according to the arbitrary mold thicknesses T X1 and T X2 .

【００３５】このように、本発明による型締力調整方法
は、金型厚さの変化に対応して、タイバー有効長Ｌと共
に型締ストロークＳを変化させてタイバー伸びλも変化
させることにより、タイバー歪み（λ／Ｌ）を一定に
し、型締力を一定にさせるものである。As described above, according to the mold clamping force adjusting method of the present invention, the tie bar elongation λ is changed by changing the mold clamping stroke S together with the tie bar effective length L in accordance with the change in the mold thickness. The tie bar distortion (λ / L) is made constant, and the mold clamping force is made constant.

【００３６】[0036]

【発明の効果】本発明による型締力調整方法およびその
装置は、以上説明したように発生型締力のバラツキを少
なくすることができるので、次のような効果を得ること
ができる。 （ａ）機械に過大な型締力が負荷しないので、機械部品
の破損などのトラブルが発生し難くなり、機械寿命を延
ばすことができる。 （ｂ）発生型締力のバラツキが少なくなり、型締力不足
もなくなるので、バリなどの成形不良が発生し難くな
り、成形品の品質を安定させることができる。As described above, the method and apparatus for adjusting the mold clamping force according to the present invention can reduce the variation in the generated mold clamping force, so that the following effects can be obtained. (A) Since an excessive mold clamping force is not applied to the machine, troubles such as breakage of machine parts are less likely to occur, and the machine life can be extended. (B) Variations in the generated mold clamping force are reduced, and there is no shortage of the mold clamping force. Therefore, molding defects such as burrs are less likely to occur, and the quality of molded products can be stabilized.

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

【図１】トグル式型締装置を用いた射出成形機の構成図
であり、型厚調整が終了し金型同士を当接した状態を示
す。FIG. 1 is a configuration diagram of an injection molding machine using a toggle-type mold clamping device, showing a state where mold thickness adjustment is completed and molds are in contact with each other.

【図２】本発明による型締力テーブル線図であり、型締
力と型締ストロークとの関係を示す。FIG. 2 is a diagram of a mold clamping force table according to the present invention, showing a relationship between a mold clamping force and a mold clamping stroke.

【図３】従来の型締力テーブル線図であり、型締力と型
締ストロークとの関係を示す。FIG. 3 is a diagram of a conventional mold clamping force table, showing a relationship between a mold clamping force and a mold clamping stroke.

【符号の説明】[Explanation of symbols]

１ ベッド ２ 固定盤 ３ エンドハウジング ４ タイバー ４ｂ ネジ部 ５ タイバーナット ６ 可動盤 ７ クロスヘッド位置検出センサ ８ トグル機構部 ９ クロスヘッド １０ 型締シリンダ １１ ピストンロッド １２ 型厚位置検出センサ １３ 金型 １４ 型厚調整装置 DESCRIPTION OF SYMBOLS 1 Bed 2 Fixed board 3 End housing 4 Tie bar 4b Screw part 5 Tie bar nut 6 Movable board 7 Cross head position detection sensor 8 Toggle mechanism part 9 Cross head 10 Molding cylinder 11 Piston rod 12 Mold thickness position detection sensor 13 Mold 14 mold Thickness adjustment device

【手続補正書】[Procedure amendment]

【提出日】平成１２年３月２９日（２０００．３．２
９）[Submission date] March 29, 2000 (2003.
9)

【手続補正１】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】００３３[Correction target item name] 0033

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【００３３】つまり、任意型厚ＴXを、エンドハウジン
グ３とベッド１間に設けられている型厚位置検出センサ
１２で読み取り、基準型厚Ｔ0との差（ＴX−Ｔ0）を計
算して、基準タイバー有効長さＬ0に対する増減比αを
求め、これを基準型締ストロークＳ0に掛けてやり、任
意型厚時の型締ストロークＳXを求める。That is, the arbitrary mold thickness T X is read by the mold thickness position detecting sensor 12 provided between the end housing 3 and the bed 1, and the difference (T X -T 0 ) from the reference mold thickness T 0 is calculated. Then, an increase / decrease ratio α with respect to the reference tie bar effective length L 0 is obtained, and is multiplied by the reference mold clamping stroke S 0 to obtain a mold clamping stroke S X at an arbitrary mold thickness.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 任意金型の金型厚さ（ＴX）と基準金型
の金型厚さ（Ｔ0）との差を求め、基準金型のタイバー
有効長さＬ0に対する増減比αである｛１＋（ＴX−
Ｔ0）／Ｌ0｝を求め、この増減比αを基準金型の型締ス
トローク（Ｓ0）に掛けて、任意金型の型締ストローク
（ＳX）とすることを特徴とするトグル式型締装置の型
締力調整方法。1. A difference between a mold thickness (T x ) of an arbitrary mold and a mold thickness (T 0 ) of a reference mold is determined, and an increase / decrease ratio α to a tie bar effective length L 0 of the reference mold is determined. ｛1+ (T X −
T 0 ) / L 0 }, and multiplying the increase / decrease ratio α by the mold clamping stroke (S 0 ) of the reference mold to obtain a mold clamping stroke (S X ) of an arbitrary mold. A method for adjusting the mold clamping force of the mold clamping device. 【請求項２】 請求項の方法の実施に使用するトグル式
射出成形機の型締力設定装置。2. A device for setting a mold clamping force of a toggle injection molding machine used for carrying out the method of claim 2.
JP2000073715A 2000-03-16 2000-03-16 Clamping force setting device for toggle type injection molding machine Expired - Lifetime JP3939067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000073715A JP3939067B2 (en) 2000-03-16 2000-03-16 Clamping force setting device for toggle type injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000073715A JP3939067B2 (en) 2000-03-16 2000-03-16 Clamping force setting device for toggle type injection molding machine

Publications (2)

Publication Number Publication Date
JP2001260198A true JP2001260198A (en) 2001-09-25
JP3939067B2 JP3939067B2 (en) 2007-06-27

Family

ID=18591916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000073715A Expired - Lifetime JP3939067B2 (en) 2000-03-16 2000-03-16 Clamping force setting device for toggle type injection molding machine

Country Status (1)

Country Link
JP (1) JP3939067B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021008067A (en) * 2019-07-01 2021-01-28 宇部興産機械株式会社 Mold clamping device and mold clamping force adjustment method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021008067A (en) * 2019-07-01 2021-01-28 宇部興産機械株式会社 Mold clamping device and mold clamping force adjustment method
JP7275929B2 (en) 2019-07-01 2023-05-18 Ｕｂｅマシナリー株式会社 Mold clamping device and mold clamping force adjustment method

Also Published As

Publication number Publication date
JP3939067B2 (en) 2007-06-27

Similar Documents

Publication Publication Date Title
TWI492833B (en) Injection molding machine forming method
JP4768080B2 (en) Molding condition setting method
JP5770317B2 (en) Mold clamping force setting device and mold clamping force setting method for injection molding machine
JP2008110498A (en) Mold clamping device of injection molding machine
US4844847A (en) Method and apparatus for controlling injection molding machines
JP2001260198A (en) Method and apparatus for adjusting clamping force of toggle type mold clamping device
JP3822775B2 (en) Clamping force adjustment method for toggle injection molding machine
JP3239097B2 (en) Method and apparatus for adjusting mold clamping force of toggle injection molding machine
JP3822774B2 (en) Clamping force adjustment method for toggle injection molding machine
JP2000158500A (en) Mold clamping device and method for injection molding machine
JPH07290538A (en) Molds clamping method for injection compression molding machine
JP3293415B2 (en) How to set the optimal filling resin amount for injection compression molding
JP3219808B2 (en) Method of adjusting mold parallelism in injection molding machine
JP3293019B2 (en) Disc substrate molding method
JP2002307502A (en) Method for automatically regulating mold clamping force of injection molding machine
JPH06304983A (en) Mold clamping force adjustment method for toggle type mold clamping device
JP5485192B2 (en) Method for determining propriety of mold clamping force and method for adjusting mold clamping force
JP3310214B2 (en) Mold clamping device and compression molding method using the same
JP3128048B2 (en) Injection compression molding method and apparatus
JPH07102598B2 (en) Injection compression molding machine
JP2013031952A (en) Method of setting toggle type injection molding machine and molding method
JP3154382B2 (en) Injection compression molding method and apparatus
JP3159028B2 (en) Mold clamping method of injection molding machine
JP2024046584A (en) Control method of injection molding machine and injection molding machine
JP2002347059A (en) Injection molding equipment, injection molding method and resin molded article

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040922

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20051115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060913

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061107

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20061107

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20061206

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061222

RD13 Notification of appointment of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7433

Effective date: 20061222

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20061222

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20070208

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: 20070320

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070327

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3939067

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: 20100406

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20110406

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20110406

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20120406

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20130406

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20140406

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term