JP3501247B2 - Method for measuring mold clamping force in die casting machine - Google Patents
Method for measuring mold clamping force in die casting machineInfo
- Publication number
- JP3501247B2 JP3501247B2 JP16547795A JP16547795A JP3501247B2 JP 3501247 B2 JP3501247 B2 JP 3501247B2 JP 16547795 A JP16547795 A JP 16547795A JP 16547795 A JP16547795 A JP 16547795A JP 3501247 B2 JP3501247 B2 JP 3501247B2
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- clamping force
- measurement
- mold clamping
- 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.)
- Expired - Fee Related
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、ダイカスト機、特にト
グル式型締め装置を備えたダイカスト機の型締め力測定
方法に関するものである。
【０００２】
【従来の技術】従来、トグル式型締め装置を備えたダイ
カスト機の型締め力を測定する場合、ロードメーターａ
を用いていた。即ち、図４に示すごとく、タイバー１の
測定用長穴１１内に設置せしめたコア棒ｂの端面にロー
ドメーターａのゲージａ1 を当接させてタイバー１の伸
びをコア棒ｂを介して読取り型締め力に換算表示するよ
うにしていた。その為に、高い精度での測定が到底不可
能であると共に、ロードメーター自体が振動に弱く壊れ
やすいためにタイバー等に設置させたままの状態で常時
測定することができない不具合があった。
【０００３】
【発明が解決しようとする課題】本発明はこの様な従来
の不具合に鑑みてなされたものであり、高い精度でもっ
て測定することが出来ると共に、常時測定することが可
能なダイカスト機における型締め力測定方法を提供せん
とするものである。
【０００４】
【課題を解決するための手段】斯る目的を達成する本発
明のダイカスト機における型締め力測定方法は、タイバ
ーの軸芯に端面から中央方へ向けて測定用長穴を形成せ
しめ、非接触式距離センサーを該測定用長穴の内底部に
臨ませて設置し、型締めにともなって変位する当該測定
用長穴の内底部の変位を直接に上記非接触式距離センサ
ーで計測することによりタイバーの伸びを測定して型締
め力を表示するようにした事を特徴としたものである。
【０００５】
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図中Ａは、従来と同様に構成されたダイカスト機
を示し、１は固定盤２と可動盤３及びリンクハウジング
４とに渡って架設された４本のタイバーを、５はトグル
式型締め装置を、６は型締め用シリンダを、それぞれ示
す。
【０００６】そして、タイバー１の軸芯にリンクハウジ
ング４側の端面１ａから中央方へ向けて所要の直径及び
長さを有する測定用長穴１１を形成せしめる。この時、
測定用長穴１１は４本全部のタイバー１に形成しても良
いが、少なくとも対角線上に位置する２本のタイバー１
に形成せしめ、各測定用長穴１１内に非接触式距離セン
サー７を臨ませる。
【０００７】非接触式距離センサー７は、型締めにとも
なって変位する測定用長穴１１の内底部11ａの変位を計
測することによってタイバー１の弾性伸びを測定するた
めのものであり、周知のレーザー式のものでも、赤外線
式のもの又は電波式のもの、音波式或いは渦電流式のも
の等を使用することが可能である。
【０００８】そして、この非接触式距離センサー７を測
定用長穴１１内に臨ませて設置する場合に、図２に示す
ごとくタイバー１の端面１ａに設置用治具８を取付け、
その設置用治具８に非接触式距離センサー７を測定用長
穴１１の内底部11ａを臨むように設置しても良いし、或
いは図３に示すごとく設置用棒９の先端部に非接触式距
離センサー７を取付け、設置用棒９の取付部９ａをタイ
バー１の端面１ａに固着すると共に、非接触式距離セン
サー７を測定用長穴１１の内方に挿入させて測定用長穴
１１の内底部11ａに臨ませるようにしても良い。
【０００９】而して、型締めにともなって変位する測定
用長穴１１の内底部11ａの変位を、非接触式距離センサ
ー７から発するレーザーや光り，音波，電圧或いは電磁
波等でもって計測することによりタイバー１の伸びを測
定し、それを型締め力に換算して表示するようになす。
【００１０】即ち、型締め力をＷ，タイバー１のタイバ
ーナット１０間の長さをＬ，タイバー１の断面積をＳ，
タイバー材のヤング率をＥとすれば、４本ある各タイバ
ー１の荷重はＷ／４であるから、各タイバー１の伸びΔ
ｌは、次の式により求められる。
【数１】
この式を変形させれば、型締め力Ｗを求める次の式が
得られる。
【数２】
【００１１】そこで、タイバー１のタイバーナット１０
間の長さをタイバーナット１０から測定用長穴１１の内
底部11ａまでの長さに置き換えて、非接触式距離センサ
ー７でもって測定用長穴１１の内底部11ａの変位を計測
することによりタイバー１の伸びを測定すれば、その時
の型締め力が分かるわけである。
【００１２】
【発明の効果】本発明は斯様に、タイバーの軸芯に形成
せしめた測定用長穴の内底部の変位を直接に非接触式距
離センサーで計測することによりタイバーの伸びを測定
して型締め力を表示するようにしたので、従来のロード
メーターによる方法と比較して高い精度でもって測定す
ることが出来る。
【００１３】しかも、タイバーの伸びを測定するに際し
て、従来のロードメーターによる方法と異なり機械的に
接触する部分がないので、耐久性が向上し、常時連続し
て型締め力を測定することが可能となる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a die-casting force of a die-casting machine, particularly a die-casting machine having a toggle-type mold-clamping device. 2. Description of the Related Art Conventionally, when measuring the clamping force of a die casting machine having a toggle-type clamping device, a load meter a is used.
Was used. That is, as shown in FIG. 4, the gauge a 1 of the load meter a is brought into contact with the end face of the core rod b installed in the measurement long hole 11 of the tie bar 1 to extend the tie bar 1 via the core rod b. It was displayed in terms of the reading clamping force. For this reason, high-precision measurement is impossible at all, and the load meter itself is vulnerable to vibration and is easily broken, so that there is a problem that the measurement cannot always be performed with the load meter installed on a tie bar or the like. SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and is capable of performing measurement with high accuracy and also capable of performing constant measurement. The method for measuring a mold clamping force in the above is provided. In order to achieve the above object, a method for measuring a mold clamping force in a die casting machine according to the present invention is to form an elongated hole for measurement from the end face toward the center of the axis of the tie bar. , A non-contact type distance sensor on the inner bottom of the long hole for measurement
Face was placed in, displays the clamping force by measuring the elongation of the tie bar by measuring directly in the non-contact distance sensor to displacement of the inner bottom portion of those said measuring slot which is displaced along with the clamping It is characterized by doing so. An embodiment of the present invention will be described below with reference to the drawings. In the figure, A denotes a die-casting machine configured in the same manner as in the prior art, 1 denotes four tie bars installed over a fixed platen 2, a movable platen 3 and a link housing 4, and 5 denotes a toggle-type mold clamping device. And 6 denotes a mold clamping cylinder. [0006] Then, a measurement elongated hole 11 having a required diameter and length is formed in the axis of the tie bar 1 from the end surface 1a on the link housing 4 side toward the center. At this time,
The measurement slots 11 may be formed in all four tie bars 1, but at least two tie bars 1 located diagonally.
Then, the non-contact type distance sensor 7 is exposed in each of the measurement slots 11. The non-contact type distance sensor 7 is for measuring the elastic extension of the tie bar 1 by measuring the displacement of the inner bottom portion 11a of the measuring elongate hole 11 which is displaced with the clamping. A laser type, an infrared type, a radio wave type, a sound wave type, an eddy current type, or the like can be used. When the non-contact distance sensor 7 is installed facing the elongated hole 11 for measurement, an installation jig 8 is attached to the end surface 1a of the tie bar 1 as shown in FIG.
The non-contact type distance sensor 7 may be installed on the installation jig 8 so as to face the inner bottom 11a of the long hole 11 for measurement, or may be in non-contact with the tip of the installation rod 9 as shown in FIG. The distance sensor 7 is mounted, the mounting portion 9a of the installation rod 9 is fixed to the end surface 1a of the tie bar 1, and the non-contact type distance sensor 7 is inserted into the measurement hole 11 so that the measurement hole 11 is inserted. You may make it face the inner bottom part 11a of this. Thus, the displacement of the inner bottom portion 11a of the measurement elongate hole 11 which is displaced due to the mold clamping is measured by a laser, light, sound wave, voltage or electromagnetic wave emitted from the non-contact type distance sensor 7. To measure the elongation of the tie bar 1 and convert it to a mold clamping force for display. That is, the clamping force is W, the length between the tie bar nuts 10 of the tie bar 1 is L, the sectional area of the tie bar 1 is S,
If the Young's modulus of the tie bar material is E, the load of each of the four tie bars 1 is W / 4.
l is obtained by the following equation. (Equation 1) By modifying this equation, the following equation for determining the mold clamping force W is obtained. (Equation 2) Therefore, the tie bar nut 10 of the tie bar 1
By replacing the length between the tie bar nut 10 and the inner bottom 11a of the long hole 11 for measurement by the non-contact distance sensor 7, the displacement of the inner bottom 11a of the long hole 11 for measurement is measured. By measuring the elongation of the tie bar 1, the mold clamping force at that time can be known. As described above, according to the present invention, the extension of the tie bar is measured by directly measuring the displacement of the inner bottom of the long hole for measurement formed in the axis of the tie bar by a non-contact type distance sensor. Since the mold clamping force is displayed, the measurement can be performed with higher accuracy than the conventional method using a load meter. Moreover, unlike the conventional method using a load meter, there is no mechanical contact when measuring the elongation of the tie bar, so that the durability is improved and the mold clamping force can be continuously measured. It becomes.
【図面の簡単な説明】
【図１】 本発明の方法を実施するダイカスト機の一
例を示す正面図。
【図２】 要部の断面図。
【図３】 本発明の他の実施例を示す要部の断面図。
【図４】 従来例を示す要部の断面図。
【符号の説明】
Ａ…ダイカスト機 １……タイバー
１ａ……端面 １１…測定用長穴
７…非接触式距離センサーBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an example of a die casting machine for performing a method of the present invention. FIG. 2 is a sectional view of a main part. FIG. 3 is a sectional view of a main part showing another embodiment of the present invention. FIG. 4 is a sectional view of a main part showing a conventional example. [Description of Signs] A: Die-casting machine 1: Tie bar 1a: End face 11: Slot for measurement 7: Non-contact distance sensor
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｃ 45/76 Ｂ２９Ｃ 45/76 (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 17/26,17/32 G01L 5/00 G01L 5/12 G01L 5/24 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 identification code FI B29C 45/76 B29C 45/76 (58) Investigated field (Int.Cl. 7 , DB name) B22D 17/26, 17/32 G01L 5/00 G01L 5/12 G01L 5/24
Claims (1)
けて測定用長穴を形成せしめ、非接触式距離センサーを
該測定用長穴の内底部に臨ませて設置し、型締めにとも
なって変位する当該測定用長穴の内底部の変位を直接に
上記非接触式距離センサーで計測することによりタイバ
ーの伸びを測定して型締め力を表示するようにした事を
特徴とするダイカスト機における型締め力測定方法。(57) [Claims] [Claim 1] A non-contact distance sensor is formed by forming a long hole for measurement from the end face toward the center of the axis of the tie bar.
Installed facing the inner bottom of the long hole for measurement,
The displacement of the inner bottom portion of those said measuring slot directly displaced become
A method for measuring a mold clamping force in a die-casting machine, wherein the mold clamping force is displayed by measuring the elongation of the tie bar by measuring with the non-contact type distance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16547795A JP3501247B2 (en) | 1995-06-30 | 1995-06-30 | Method for measuring mold clamping force in die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16547795A JP3501247B2 (en) | 1995-06-30 | 1995-06-30 | Method for measuring mold clamping force in die casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0910912A JPH0910912A (en) | 1997-01-14 |
| JP3501247B2 true JP3501247B2 (en) | 2004-03-02 |
Family
ID=15813153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16547795A Expired - Fee Related JP3501247B2 (en) | 1995-06-30 | 1995-06-30 | Method for measuring mold clamping force in die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3501247B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5353483B2 (en) * | 2009-06-29 | 2013-11-27 | 宇部興産機械株式会社 | Deterioration diagnosis method and apparatus for toggle mechanism in toggle type mold clamping device |
| CN103353362A (en) * | 2012-12-06 | 2013-10-16 | 上海一达机械有限公司 | Mould locking force detection device |
| JP6426016B2 (en) * | 2015-01-30 | 2018-11-21 | 住友重機械工業株式会社 | Injection molding machine |
| CN107121232B (en) * | 2017-05-12 | 2019-07-16 | 哈尔滨工程大学 | A fin shaft device and method for real-time detection of dynamic lift based on laser ranging |
-
1995
- 1995-06-30 JP JP16547795A patent/JP3501247B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0910912A (en) | 1997-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7581330B1 (en) | Gauge device for measuring the inner diameter of engine related bores | |
| EP1021287B1 (en) | Mold core-pin deflection transducer | |
| JP3501247B2 (en) | Method for measuring mold clamping force in die casting machine | |
| EP0831294A1 (en) | Measuring device for accurately measuring internal or external diameters or distances | |
| JP2989589B1 (en) | Electronic dough thickness measuring instrument | |
| CA2207389C (en) | Mold core-pin deflection transducer | |
| NL8001932A (en) | DEVICE FOR INSERTING A FORCE TO BE MEASURED IN A BENDING BAR. | |
| JPH10156837A (en) | Measuring method of force of release and mold for molding resin | |
| JPS59218909A (en) | Die height parallelism measuring device of die casting machine | |
| JP3250611B2 (en) | Tie bar extension measuring device for mold clamping mechanism | |
| JP2000102959A (en) | Fluid sensor for material for molding die | |
| JP7057187B2 (en) | Beam damage evaluation method | |
| JP3290089B2 (en) | Micrometer | |
| JPH05209794A (en) | Molten metal temperature measuring device | |
| US4719802A (en) | Device for and method of determining changes in linear dimension of objects | |
| JPH0875579A (en) | Pressure measuring device and casting mold equipped with the pressure measuring device | |
| JPH08114520A (en) | Pressure measuring device and pressure casting method using pressure measuring device | |
| JP2619612B2 (en) | Hammer hammer | |
| JPH11207433A (en) | Model plate for mold making and method for evaluating mold strength | |
| JPH07113732A (en) | Tensile test method | |
| JPH0543978Y2 (en) | ||
| Bennett | The no-contact extensometer | |
| JPH10323863A (en) | Injection mold | |
| JP3343020B2 (en) | Press deformation measuring instrument and measuring method | |
| JPH06331472A (en) | In-mold pressure measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20031126 |
|
| LAPS | Cancellation because of no payment of annual fees |