JP2860700B2 - Judgment method for molded products - Google Patents
Judgment method for molded productsInfo
- Publication number
- JP2860700B2 JP2860700B2 JP24361690A JP24361690A JP2860700B2 JP 2860700 B2 JP2860700 B2 JP 2860700B2 JP 24361690 A JP24361690 A JP 24361690A JP 24361690 A JP24361690 A JP 24361690A JP 2860700 B2 JP2860700 B2 JP 2860700B2
- Authority
- JP
- Japan
- Prior art keywords
- mold opening
- speed
- time
- mold
- molded product
- 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
Landscapes
- 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】 ＜産業上の利用分野＞ 本発明は射出成形機の型開き工程の型開き速度、或い
は型開き時間を監視し、その遅速により、成形品の形状
的な良否を判定する方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention monitors a mold opening speed or a mold opening time in a mold opening process of an injection molding machine, and determines a shape quality of a molded product based on the slow speed. On how to do it.
＜従来技術＞ 射出成形機の金型から取出された成形品の形状的な良
否の判定は従来人間の目視により行われており、型開き
工程の型開き速度或いは型開き時間を監視し、その遅速
により成形品の形状的な良否の判定する方法は行われて
いなかった。<Prior Art> Judgment of the shape of a molded product taken out of a mold of an injection molding machine is conventionally performed by a human eye, and a mold opening speed or a mold opening time in a mold opening process is monitored. A method of judging the shape of a molded article by a slow speed has not been performed.
＜発明が解決しようとする課題＞ 型開き工程の型開き速度或は型開き時間を監視するこ
とは成形品の品質、特に形状的な品質を判定するための
重要な要素である。例えば、アンダカット部分を有する
成形品は型開きに際し、アンダカット部が抜けるまでは
型開き速度を低速度で行い、成形品に傷が付かないよう
にし、アンダカット部が抜けたらば、今度は速い速度で
型開きをし、可能な限り成形サイクルを短かくするよう
な制御が行われている。<Problems to be Solved by the Invention> Monitoring the mold opening speed or the mold opening time in the mold opening process is an important factor for judging the quality of the molded product, particularly the shape quality. For example, when opening a molded product having an undercut portion, perform the mold opening speed at a low speed until the undercut portion comes off, so as not to damage the molded product, and if the undercut portion comes off, next time, Control is performed to open the mold at a high speed and shorten the molding cycle as much as possible.
従って、アンダカット部分のある成形品は型開きの初
期において、或る定められた速度以上になると成形品は
外形的に不良となり易い。Therefore, a molded product having an undercut portion tends to be poor in external shape when the speed exceeds a predetermined speed in the early stage of mold opening.
また、成形品がもし、オーババックであれば、型開き
に際しては成形品は型から抜きにくく、開き速度はおく
れ、時間も掛る。もしショートショットならば型離れは
良く、開き速度は速く、時間も掛らない。Also, if the molded article is overback, the molded article is difficult to remove from the mold when opening the mold, and the opening speed is slow and it takes time. If it is a short shot, the mold release is good, the opening speed is fast, and it does not take much time.
このように型開き時の速度や時間を監視し、その遅速
により、成形品の形状的な良否が判定出来るにもかかわ
らず従来は行われていなかったので、生産性・自動化の
点で不都合であった。In this way, the speed and time at the time of opening the mold are monitored, and the slow speed can be used to judge the shape of the molded product, but it has not been conventionally performed, so there is a disadvantage in terms of productivity and automation. there were.
本発明の目的は前述の欠点を取除き、謂るオンライン
で成形品の形状的な良否の判定が可能な方法を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method which eliminates the above-mentioned drawbacks and enables a so-called online determination of the shape of a molded article.
＜課題を解決するための手段＞ 前述の目的を達成するため、本発明は可動金型に取付
た可動盤が型開き開始時より予め定めた型開き速度Ｖ0
に達するまでの時間Ｔを測定し、予め定めた前記型開き
速度Ｖ0までに達するまでの基準時間Ｔ0と比較し、その
偏差|T0−T|が予め定めた許容値ΔＴと比較し、ΔＴ≧|
T0−T|ならば良品、それ以外ならば不良品として警報を
発するようにしたことを特徴とする成形品の良否を判断
する成形品の外形的良否判定方法とした。<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention provides a mold opening speed V 0 that is determined in advance from the start of mold opening of a movable plate attached to a movable mold.
Is measured and compared with a predetermined reference time T 0 until the mold opening speed V 0 is reached, and the deviation | T 0 −T | is compared with a predetermined allowable value ΔT. , ΔT ≧ |
If T 0 −T |, a non-defective product is issued, and if not, an alarm is issued as a defective product.
また、射出成形機の型開き工程全体における時間ｔを
変数として型開き速度をｖ′＝ｆ（ｔ）として多点サン
プリングし、予め定めた良品成形時の時間に対する型開
き速度の基準波形とｖ＝ｆ（ｔ）と型開き工程中の任意
の時間範囲又は任意の時間１点において比較し、予め定
めてある許容速度値Δｖ内であれば良品、それ以外なら
ば不良品として警報を発するようにしたことを特徴とす
る成形品の形状的な良否を判定する方法とし、さらに、
前記請求項２）における型開き工程における時間に代え
て、型開き位置としたことを特徴とする成形品の形状的
な良否判定を判定する方法とした。Also, the time t in the entire mold opening process of the injection molding machine is used as a variable, and the mold opening speed is sampled at multiple points with v '= f (t). = F (t) is compared with an arbitrary time range or an arbitrary time point during the mold opening process, and if it is within a predetermined allowable speed value Δv, a warning is issued as a non-defective product if it is other than the allowable speed value Δv. A method of determining the shape of a molded article characterized by having a
A method for judging whether the molded product is good or bad is characterized by setting the mold opening position instead of the time in the mold opening step in claim 2).
＜作用＞ 前述のように、型開き工程時の型開速度、又は時間を
監視することにより、その遅速により成形品の形状的な
良否の判断がオンラインで出来る。<Operation> As described above, by monitoring the mold opening speed or the time during the mold opening process, it is possible to judge the shape of the molded product on-line based on the slow speed.
＜実施例＞ 次に第１図により本発明の１実施例を説明する。型締
装置10は固定盤11に取付た固定金型12に対し、型締シリ
ンダ13により可動盤14に取付た可動金型15を進退させ、
両金型12および15が図示したように金型接合面Ａで当接
したとき、図示してない金型キャビティを形成するよう
になっており、成形品の成形に際しては、加熱シリンダ
16から前記金型キャビティ内に溶融材料を充填し、冷却
後、前記金型15を開き金型キャビティ内の成形品を外部
へ取出すようになっている。前記可動盤14には、バー17
が取付てあり、鎖線で囲ったサンプリング装置30によ
り、型開き速度を検出するようになっている。即ち、速
度検出器18に前記バー17が貫通していて可動盤14が後退
する（図中左行する）と、その速度が検出され、検出値
は増幅器19、A/D変換器20を経て記憶装置21に記憶され
るようになっている。22は比較装置で、予め定めた基準
速度Ｖ0を設定しておく設定器23の設定値Ｖ0と前記速度
検出器18により検出され記憶装置21に記憶されている検
出値Ｖを比較し、両値が一致したとき信号Ｓを発信する
ものである。24はタイマで型開き開始と同時に作動し、
前記比較装置22からの信号Ｓを受けたとき停止するよう
になっている。即ち、型開き工程が始まり、可動盤14が
予め定められた基準速度Ｖ0に達すると、その時間が測
定出来るようになっている。<Example> Next, an example of the present invention will be described with reference to FIG. The mold clamping device 10 moves the movable mold 15 attached to the movable plate 14 by the mold clamping cylinder 13 with respect to the fixed mold 12 attached to the fixed plate 11,
When the two molds 12 and 15 abut on the mold joining surface A as shown in the figure, a mold cavity (not shown) is formed.
A molten material is filled into the mold cavity from 16 and, after cooling, the mold 15 is opened to take out the molded product in the mold cavity to the outside. The movable platen 14 has a bar 17
Is mounted, and the mold opening speed is detected by a sampling device 30 surrounded by a chain line. That is, when the bar 17 penetrates through the speed detector 18 and the movable platen 14 retreats (moves to the left in the figure), the speed is detected, and the detected value passes through the amplifier 19 and the A / D converter 20. The data is stored in the storage device 21. Reference numeral 22 denotes a comparison device, which compares a set value V 0 of a setting device 23 for setting a predetermined reference speed V 0 with a detection value V detected by the speed detector 18 and stored in a storage device 21, The signal S is transmitted when both values match. 24 operates at the same time as the mold opening starts with a timer,
It stops when it receives the signal S from the comparison device 22. That is, when the mold opening process starts and the movable platen 14 reaches a predetermined reference speed V 0 , the time can be measured.
25は時間設定器で、可動盤14が予め定めた開き速度Ｖ
0に達するまでの基準時間Ｔ0を設定するものであり、前
記タイマ24の検出した時間Ｔと共に演算器26に作用し、
同演算器26が前記両時間の偏差|T0−T|を算出する。27
は比較装置で前記演算器26からの偏差|T0−T|と、予め
設定してある許容値設定器28に設定した許容値ΔＴと比
較し、ΔＴ≧|T0−T|又は、ΔＴ＜|T0−T|を判断し、前
者の場合は成形品が形状的に良品であり、後者は成形品
が形状的に不良品であると判断し、警報装置29に作用し
て、同警報装置29を作動させるようになっている。Reference numeral 25 denotes a time setting device.
It sets a reference time T 0 before reaching 0 , and acts on the calculator 26 together with the time T detected by the timer 24,
The computing unit 26 calculates the difference | T 0 −T | between the two times. 27
Is a comparison device that compares the deviation | T 0 −T | from the computing unit 26 with a preset allowable value ΔT set in the allowable value setting unit 28, and ΔT ≧ | T 0 −T | or ΔT <| T 0 −T |, and in the former case, the molded product is determined to be good in shape, and the latter is determined to be defective in shape, and the alarm device 29 is actuated. The alarm device 29 is operated.
また、第２図および第３図に本発明の他の実施例を説
明する。サンプリング装置30の速度検出器18が型開き工
程の型開き速度ｖ′を時間ｔを変数として多点サンプリ
ングし、型開き速度ｖ′＝ｆ（ｔ）として検出し、記憶
装置21に記憶する。一方設定器23には良品成形時の基準
型開き速度ｖ＝ｆ（ｔ）を設定しておき、比較装置22が
前記サンプリング装置30で検出した型開き速度ｖ′と、
設定器23に設定してある基準速度ｖを型開き工程中の任
意の時間範囲ｔ1ないしｔ2の間で、或いは任意の時間１
点で比較し、その偏差|v′−v|が許容値設定器28に設定
してある許容値Δｖと比較器27が比較し、Δｖ≧|v′−
v|ならば良品、それ以外なら不良品として警報装置29を
作動させるようになっている。2 and 3 show another embodiment of the present invention. The speed detector 18 of the sampling device 30 performs multipoint sampling of the mold opening speed v 'in the mold opening process using the time t as a variable, detects the mold opening speed v' = f (t), and stores it in the storage device 21. On the other hand, the reference mold opening speed v = f (t) at the time of molding non-defective products is set in the setting unit 23, and the mold opening speed v 'detected by the comparing device 22 by the sampling device 30 is set to:
The reference speed v set in the setting device 23 is set to an arbitrary time range t 1 to t 2 during the mold opening process, or to an arbitrary time 1
And the comparator | 27 compares the deviation | v'-v | with the allowable value Δv set in the allowable value setting unit 28, and obtains Δv ≧ | v'-
If v | is a good product, otherwise, the alarm device 29 is activated as a defective product.
＜効果＞ 以上説明したように型開き工程中の時間や速度を型開
き工程中の任意の時間範囲で、或いは任意の時間１点に
おいて監視することにより、成形品の形状的な良否の判
定が可能となった。<Effect> As described above, by monitoring the time and speed during the mold opening process in an arbitrary time range during the mold opening process or at any one point in the arbitrary time, it is possible to determine whether the molded product is good or bad. It has become possible.
第１図は本発明の１実施例を示す図で、型開き工程中に
設定した可動盤がある速度に達するまでの時間を監視し
て、成形品の良否を判定する方法を示す図。第２図およ
び第３図は本発明による他の実施例を示す図で、可動盤
の開き速度を時間の変数として多点サンプリングして監
視する方法であり、第２図はその方法を示す図。第３図
は時間と型開き速度の波形図の説明図。 14……可動盤,18……速度検出器,21……記憶装置,23…
…設定器,22,27……比較装置,25……タイマ,26……演算
器,28……許容値設定器,29……警報装置。FIG. 1 is a view showing one embodiment of the present invention, and is a view showing a method of judging the quality of a molded product by monitoring a time required for a movable plate set during a mold opening process to reach a certain speed. FIGS. 2 and 3 show another embodiment of the present invention, in which the opening speed of the movable platen is monitored at multiple points as a variable of time, and FIG. 2 is a diagram showing the method. . FIG. 3 is an explanatory diagram of a waveform diagram of time and mold opening speed. 14 …… Movable board, 18 …… Speed detector, 21 …… Storage device, 23…
… Setter, 22, 27… Comparator, 25… Timer, 26… Calculator, 28… Allowable value setter, 29 …… Alarm.
Claims (4)
開き開始時からの予め定めた型開き速度Ｖ0に達するま
での時間Ｔを測定し、前記型開き速度Ｖ0に達するまで
の基準時間Ｔ0とを比較し、その偏差|T0−T|が予め定め
てある許容値ΔＴと比較し、ΔＴ≧|T0−T|ならば良
品、それ以外なら不良品として警報を発するようにした
ことを特徴とする成形品の形状的な良否を判定する方
法。1. A method of measuring a time T required for a movable plate of an injection molding machine to which a movable mold is mounted to reach a predetermined mold opening speed V 0 from the start of mold opening, and reaches the mold opening speed V 0 . compares the reference time T 0 until, the deviation | alarm as if good, defective if otherwise | T 0 -T | is compared to the allowable value [Delta] T that is determined in advance, [Delta] T ≧ | T 0 -T A method for determining the shape of a molded article, the method comprising:
変数として型開き速度をｖ′＝ｆ（ｔ）として多点サン
プリングし、予め定めてある良品成形時の時間に対する
型開き速度の基準波形ｖ＝ｆ（ｔ）と型開き工程中の任
意の時間範囲において比較し、予め定めてある許容速度
値Δｖ内であれば良品、それ以外ならば不良品として警
報を発するようにしたことを特徴とする成形品の形状的
な良否を判定する方法。2. A mold opening speed of the injection molding machine is multi-point sampled with a time t as a variable and the opening speed v '= f (t), and a standard of the opening speed with respect to a predetermined time for molding a good product. The waveform v = f (t) is compared with an arbitrary time range during the mold opening process, and an alarm is issued as a non-defective product if it is within a predetermined allowable speed value Δv and a defective product otherwise. A method for judging the shape of a molded product.
て、任意の時間１点としたことを特徴とする成形品の形
状的な良否判定する方法。3. A method for judging whether a molded product is good or bad, wherein one point is set at an arbitrary time instead of the arbitrary time range according to claim 2).
おける時間に代えて、型開き位置としたことを特徴とす
る成形品の形状的な良否判定を判定する方法。4. A method for judging whether a molded product is good or bad in shape, characterized in that a mold opening position is used instead of the time in the mold opening process according to claim 2) or 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24361690A JP2860700B2 (en) | 1990-09-13 | 1990-09-13 | Judgment method for molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24361690A JP2860700B2 (en) | 1990-09-13 | 1990-09-13 | Judgment method for molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04122619A JPH04122619A (en) | 1992-04-23 |
| JP2860700B2 true JP2860700B2 (en) | 1999-02-24 |
Family
ID=17106473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24361690A Expired - Fee Related JP2860700B2 (en) | 1990-09-13 | 1990-09-13 | Judgment method for molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2860700B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010016543A (en) * | 2000-12-07 | 2001-03-05 | 민병현 | On-line Quality Monitoring of Injection Molded Parts using Indirect Control Parameters |
-
1990
- 1990-09-13 JP JP24361690A patent/JP2860700B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04122619A (en) | 1992-04-23 |
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