JPS58173068A - Method for measuring pressure increasing time in die casting machine - Google Patents
Method for measuring pressure increasing time in die casting machineInfo
- Publication number
- JPS58173068A JPS58173068A JP5230182A JP5230182A JPS58173068A JP S58173068 A JPS58173068 A JP S58173068A JP 5230182 A JP5230182 A JP 5230182A JP 5230182 A JP5230182 A JP 5230182A JP S58173068 A JPS58173068 A JP S58173068A
- Authority
- JP
- Japan
- Prior art keywords
- time
- pressure
- injection
- measurement
- signal
- 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.)
- Pending
Links
Landscapes
- Time Recorders, Dirve Recorders, Access Control (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ダイカストマシンの鋳込み時にお1プるダイ
カス]〜製品品質に及ぼす影響を知るための特性指標の
ひとつである背圧時間を自動的にtI測する方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically measuring back pressure time tI, which is one of the characteristic indicators for knowing the influence on product quality. It is something.
ダイカストにおいて鋳造圧力の伝播状況は、ダイカスト
の製品品質に及ぼす要因で最も重要な要因の一つである
。鋳造圧力の伝播状況はプランジャ面にかかる圧力変化
または力変化と殆んど同じような状況であられれるもの
であり、第1図にその一般的な射出圧力特性を示す。射
出力とメタル圧力の波形は相似形となる。In die casting, the propagation of casting pressure is one of the most important factors affecting the quality of die casting products. The propagation condition of casting pressure is almost the same as the pressure change or force change applied to the plunger surface, and FIG. 1 shows the general injection pressure characteristics. The waveforms of injection force and metal pressure are similar.
第1図を参照しながら説明すると、一般的に昇圧時間は
、射出力あるいはメタル圧力等の測定入力信号に従った
物理量ならびに単位で、l−、OW設定値、HI G
H設定値を指定しておき、1.、 OW 8Q定値から
1−11 G 11設定値まで上昇するのに要しだ時m
1を測定1ノでいる。なお、]ニ記10W設定値とLI
I G l−1設定値は、あらかじめ測定によって求
めておいた圧力曲線等や、今までの経験(こ基づいて適
宜な値に定めておく。第1図において、△は鋳込スター
1〜時点、[3は射出途中にa3ける高速q・1j11
への油圧回路の切替指令時点、ClJ実際に油圧回路が
切替わって高速射出に入ったとぎにり一−ジ圧力Pが発
生ずる時点、[)とEは、射出完了直前の背圧時にメタ
ル圧力等がLOW設定蛤、HI G H設定器と同じに
なった時点である。To explain with reference to Fig. 1, the pressurization time is generally expressed as a physical quantity and unit according to the measurement input signal such as injection force or metal pressure, and is expressed as l-, OW setting value, HIG
Specify the H setting value, 1. , Time required to rise from OW 8Q constant value to 1-11 G 11 set value m
1 is measured at 1 no. In addition,] 10W setting value and LI
The I G l-1 setting value is set to an appropriate value based on the pressure curve obtained in advance by measurement and past experience.In Figure 1, △ indicates the time from casting star 1 to ,[3 is high speed q・1j11 in a3 during injection
At the time when the hydraulic circuit is commanded to switch to ClJ, at the time when the hydraulic circuit is actually switched to enter high-speed injection, the first-jet pressure P is generated, and [) and E are the times when the metal This is the point when the pressure, etc. becomes the same as the LOW setting and the HIGH setting.
ダイカス1へマシンの鋳込みは、最初射出シリンダを低
速″c前進させ、金型内へアルミニウム等の溶湯を充填
してゆぎ、鋳込途中で高速へ切替えるため、この時にサ
ージ圧力Pが発生する。このサージ圧力Pによるピーク
値は、LOW設定値を越えるため、従来は昇圧時間が第
1図におけるCE間のように長く計測されていた。本来
は、DF間の時間が正確な昇圧時間である。When the machine is casting into the die casting 1, the injection cylinder is first moved forward at a low speed ``c'' to fill the mold with molten metal such as aluminum, and then switched to high speed in the middle of casting, so a surge pressure P is generated at this time. Since the peak value due to this surge pressure P exceeds the LOW setting value, conventionally the pressure increase time was measured as long as between CE in Figure 1.Originally, the time between DF was the accurate pressure increase time. be.
本発明は、[記事情に鑑みなされたもので、より正確な
昇圧時間の測定と、計測操作の容易性を目的としている
。誤計測を防1するためには、油1:1回路切換時貞か
ら、背圧時間計測に悪影響を与える4J−−ジによるピ
ーク圧力値等が消滅するまでの経過時間を設定し、この
間は昇圧時間を目測しないようにしている。すなわら、
第1図において、BF間は目測を制限している。The present invention has been developed in view of the circumstances described above, and aims at more accurate measurement of boost time and ease of measurement operation. In order to prevent erroneous measurements, set the elapsed time from when the oil 1:1 circuit is switched until the peak pressure value etc. due to 4J--ji, which has an adverse effect on back pressure time measurement, disappears, and during this time, the pressure should not be increased. I try not to keep an eye on the time. In other words,
In FIG. 1, visual measurement is restricted between BF.
次に、図面に示した1実施例に基づいて、本発明の詳細
な説明りる。Next, the present invention will be explained in detail based on one embodiment shown in the drawings.
第2図においで、20aは固定金型、211は可動金型
、22aは射出スリーブ、23は射出プランジ17.2
4は割出シリンダ、25は射出プランジ1)ど一体に連
結されたピストンロッドである。In FIG. 2, 20a is a fixed mold, 211 is a movable mold, 22a is an injection sleeve, and 23 is an injection plunger 17.2.
4 is an index cylinder, and 25 is a piston rod integrally connected to the injection plunger 1).
射出シリンダ24のヘッド側に取付t−Jられた圧力変
換器1によりシリンダヘッド側の迂力を検出し、アンプ
2により信号を増幅し、ざらにメタル圧力演算器2aに
より射出力あるいはメタル圧力へ換粋する。設定器3.
4には10W設定値、i」IGH設定値を設定しておき
、比較器5.6を用いて、前記演算器2aからの出力信
号と比較する。The pressure transducer 1 attached to the head side of the injection cylinder 24 detects the bypass force on the cylinder head side, the amplifier 2 amplifies the signal, and the metal pressure calculator 2a converts it into injection force or metal pressure. convert. Setting device 3.
4 is set to a 10W setting value and i' is set to an IGH setting value, which are compared with the output signal from the arithmetic unit 2a using a comparator 5.6.
LOW設定値とl−1r G l−I H定値として例
示した数値【よメタル圧力で、単位はKg/cvである
が、射出力として設定することもできる。The numerical values exemplified as the LOW setting value and l-1r G l-I H constant value are metal pressure, and the unit is Kg/cv, but they can also be set as injection force.
演算器2aの出力信号が上昇して設定器3のl−OW
H定値を越えると比較器5の出ツノがONとなり、更に
、演算器2aの出力信号が上昇して設定器4のHI G
l−1設定値を越えると比較器6の出力がONとなる
。The output signal of the calculator 2a rises and the l-OW of the setting device 3
When the H constant value is exceeded, the output horn of the comparator 5 turns ON, and furthermore, the output signal of the arithmetic unit 2a rises and the setting device 4 becomes HIGH.
When the l-1 set value is exceeded, the output of the comparator 6 turns ON.
一7]−1射出シリンダ24のピストンロッド25と連
動するス1ヘライカ8の前進途中で作動する高速切替リ
ミットスイッチ7の信号と、時刻パルス発信器20から
のパルス信号でAND素子10のゲー1〜が開き、時刻
パルスがd測制限時間カウンタ11でカウントされ、高
速切替信号が発生した時点からの経過時間がh1測制限
時間カウンタ11ヘカウントされる。17]-1 The gate 1 of the AND element 10 is generated by the signal of the high-speed switching limit switch 7 which is activated during the forward movement of the S1 heleica 8 which is interlocked with the piston rod 25 of the injection cylinder 24, and the pulse signal from the time pulse transmitter 20. ~ is opened, the time pulse is counted by the d measurement time limit counter 11, and the elapsed time from the time when the high speed switching signal is generated is counted by the h1 measurement time limit counter 11.
高速切替リミットスイッチ7が動作して油圧回路切替え
時のサージ圧力が充分に消えるまでの時間を、あらかじ
め測定によって求めておいた値や経験に基づいて設定器
12に設定しておく。その値より目測制限時間カウンタ
11の出力の値が大きくなると比較器13の出力がON
となる。The time required for the high-speed switching limit switch 7 to operate and the surge pressure to sufficiently disappear when switching the hydraulic circuit is set in the setting device 12 based on a value determined in advance by measurement or experience. When the value of the output of the visual limit time counter 11 becomes larger than that value, the output of the comparator 13 turns ON.
becomes.
一方、時刻パルス発信器20より発信されるパルスは時
間として時間カウンタ21でカウントされ、その時間デ
ータはラッチ回路16.17へ並列に送られる。On the other hand, the pulses transmitted from the time pulse generator 20 are counted as time by a time counter 21, and the time data is sent in parallel to latch circuits 16 and 17.
5−
ピストンロツ1〜が前進することにより、高速切替リミ
ツ1−スイッチ7が作動し、設定器12で設定した以上
の経過時間に、さらにメタル圧力が設定器31DtOW
HU定値以十になると、AND索子14が作動し、ラッ
チ回路16の時間データがラッチされる。5- As the piston rods 1 to 1 move forward, the high-speed switching limit 1-switch 7 is activated, and after the elapsed time set by the setting device 12, the metal pressure is further increased to the setting device 31DtOW.
When the HU value reaches the predetermined value, the AND gate 14 is activated and the time data of the latch circuit 16 is latched.
引続き、ビス1〜ンロツド25が前進して、メタル圧力
が設定器4のHI G l−1設定値以上になると、A
ND累子15が作動し、ラッチ回路17の時間データが
ラッチされ、演算器22でラッチ回路17.16の時間
データの差が演算される。演算された昇任時間は、表示
器19によりディジタル表示される。Subsequently, when screw 1 to rod 25 move forward and the metal pressure exceeds the HI G l-1 setting value of setting device 4, A
The ND cumulator 15 operates, the time data of the latch circuit 17 is latched, and the arithmetic unit 22 calculates the difference between the time data of the latch circuits 17 and 16. The calculated promotion time is digitally displayed on the display 19.
前記実施例では、計測制御時間カウンタの基点の信号と
して、低速から高速への油圧回路切替信号を用いでいる
が、これは、他の時点からの信号を用いることもできる
。また、高速切替リミットスイッチ7からの信号ライン
およびAND素子10を取除いて、単に時間のみで昇圧
時間の計測準備完了時点を定めることもできる。In the embodiment described above, a hydraulic circuit switching signal from low speed to high speed is used as the base point signal of the measurement control time counter, but a signal from another time point may also be used. Alternatively, the signal line from the high-speed switching limit switch 7 and the AND element 10 can be removed, and the time when preparation for measuring the boost time is completed can be determined simply by time.
=6−
その湯中に、目測制御11時間の目測始点は、前記した
ように、高速射出への油圧回路切替指令時点だ()でな
く、射出スタート時点、もしくは、高速射出への油圧回
路の切替指令時点よりも前の低速射出途中の任意の時点
のうちのいずれかにすることもできる。7aは射出スタ
ー!一時点で作動するリミットスイッチ、7])は高速
射出への油圧回路の切替指令時点J:りも前の低速射出
途中の任意の時点で作動するリミットスイッチであるが
、リミットスイッチ7bを用いる場合は、リミットスイ
ッチ7を用いる場合と同様にする。勿論、計測制限時間
の計測始点として、前記時点のうちの2つ以上の時点か
ら適宜選択して利用しようとする場合は、リミットスイ
ッチ7.7bなどからの信号ラインに切替スイッチか選
択II+ll Ti11回路を設けておく。なお、リミ
ットスイッチ7.7a 、7bの代りに、近接スイッチ
などの位置検出スイッチや磁気スケールなどを用いるこ
ともできる。=6- During the hot water, the visual measurement start point for the 11th hour of visual control is not the time when the hydraulic circuit is commanded to switch to high-speed injection (), but the injection start point, or the time when the hydraulic circuit is switched to high-speed injection. It can also be set at any arbitrary point during low-speed injection before the switching command point. 7a is an injection star! The limit switch 7]) which operates at one point in time is a limit switch which operates at any point during low-speed injection before commanding the switching command point J of the hydraulic circuit to high-speed injection, but when limit switch 7b is used. is the same as when using the limit switch 7. Of course, if you want to select and use two or more of the above points as the measurement start point of the measurement limit time, you can connect a selector switch or selection II+ll Ti11 circuit to the signal line from the limit switch 7, 7b, etc. Set it up. Note that a position detection switch such as a proximity switch, a magnetic scale, or the like may be used instead of the limit switches 7.7a and 7b.
このように、本発明においては、特許請求の範囲に記載
したような構成にしたので、ザージ圧力が完全に消えた
後に背圧時間を目測することができ、実際の昇圧時間を
iE確にか゛=〕自動的lこh1測することができる。In this way, in the present invention, since the configuration as described in the claims is adopted, the back pressure time can be visually measured after the surge pressure completely disappears, and the actual pressure increase time can be accurately measured. =] Can be automatically measured.
したがって、このiIX確に目測した昇圧時間を良品質
のタイカス1ル製品を確実容易に得るための指標として
活用することが(・きる。Therefore, this iIX accurately measured boost time can be used as an index to reliably and easily obtain high-quality products.
なお、この昇圧時間が長ずざるときは、キャビティ内の
溶湯に割出圧力が伝播し終る時間が長1き゛るのである
から、溶湯の給湯量が多?Iぎるとか、溶湯や金型の温
度が低ずぎるなどの欠点があり、ダイカス1へ製品に巣
ができやすい欠員がある。逆に、この昇圧時間が短いと
、キャビチーf内の溶湯がまたやわらかいつらに溶湯に
早く力を加えること(こなるので、その分たけ気泡がつ
ぶされ、栄の少ないダイカス1へ製品が得られやずいが
、溶湯の給湯量が少なすぎなかったかという心配があり
、または、溶湯や金型の温度が高すぎて、ンシンリイク
ルが長くなったり、金型へのやきつきが生じやすくなる
などの欠点がある。したがって、この昇11時間は、ダ
イカスi−1!j品に応じて適当な範囲内におさめるよ
うにする必要があり、この4月;114間の目測結果を
射出制御に有効に活用することがぐぎる。Note that if this pressure increase time is not long, it takes a long time for the indexing pressure to propagate to the molten metal in the cavity, so the amount of molten metal supplied is large. There are drawbacks such as the temperature of the molten metal and mold being too low, and the die casting 1 has holes that easily cause cavities to form in the product. On the other hand, if this pressurization time is short, the molten metal in the cavity F will apply force to the soft molten metal quickly (this will cause the bubbles to be crushed and the product will not be obtained in the die casting 1 with less glory). However, there are concerns that the amount of molten metal supplied is too low, or the temperature of the molten metal or mold is too high, resulting in a long recycle or a tendency to stick to the mold. Therefore, it is necessary to keep this 11 hours of rise within an appropriate range depending on the die casting i-1!j product, and the visual measurement results for this April 114 should be effectively used for injection control. There are so many things to do.
【図面の簡単な説明】
第1図は射出圧力特性を示す線図、第2図は本発明を実
施するための装置の1実施例を示すブロック線図である
。
1・・・圧力変換器、3.4.12・・・設定器、7・
・・高速切替リミッ]・スイッチ、11・・・計測制限
時間カウンタ、19・・・表示器、20・・・時刻パル
ス発信器、21・・・時間カウンタ、24・・・射出シ
リンダ。
特許出願人 宇部興産株式会社
一〇−
茅1図BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing injection pressure characteristics, and FIG. 2 is a block diagram showing one embodiment of an apparatus for carrying out the present invention. 1... Pressure transducer, 3.4.12... Setting device, 7.
...High speed switching limit] switch, 11...Measurement limit time counter, 19...Display device, 20...Time pulse transmitter, 21...Time counter, 24...Injection cylinder. Patent applicant: Ube Industries Co., Ltd.
Claims (1)
力等の時系な変化をη1制するごとにより射出力やメタ
ル圧力等が低設定値から高設定値まで昇圧するのに要し
た弁圧時間を泪測するときに、昇圧時間の計測準備完了
時点を、射出スター1〜時点、高速射出への油圧回路切
替指令時点、もしくは、高速射出への油圧回路切替指令
時点よりも前の低速射出途中にお()る定められた任意
の時点のうらのいケれかの時点か1うの射出シリンダの
前進中にお番ノる経過時点で、かつ、高速射出への油圧
回路の切替等により発生するザーシ圧力の発生後に定め
、その後、射出力やメタル圧力等が低設定値に達した時
に計測開始の指令を出1−ようにしたダイカストマシン
の昇圧時間測定方法。[Claims] When casting a die-casting machine, the injection force, metal pressure, etc. are increased from a low set value to a high set value every time the time-based changes in the injection force, metal pressure, etc. are controlled by η1. When measuring the valve pressure time required for the injection, the time when the preparation for measuring the pressure increase time is completed is determined from injection star 1, the time when the hydraulic circuit switching to high-speed injection is commanded, or the time when the hydraulic circuit switching to high-speed injection is commanded. At a predetermined arbitrary point in the middle of low-speed injection (before), or at a certain point in time during the forward movement of one injection cylinder, and then proceed to high-speed injection. A pressure increase time measurement method for a die-casting machine that is determined after the rise pressure is generated due to switching of the hydraulic circuit, etc., and then a command to start measurement is issued when the injection force, metal pressure, etc. reach a low set value. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5230182A JPS58173068A (en) | 1982-04-01 | 1982-04-01 | Method for measuring pressure increasing time in die casting machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5230182A JPS58173068A (en) | 1982-04-01 | 1982-04-01 | Method for measuring pressure increasing time in die casting machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58173068A true JPS58173068A (en) | 1983-10-11 |
Family
ID=12910966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5230182A Pending JPS58173068A (en) | 1982-04-01 | 1982-04-01 | Method for measuring pressure increasing time in die casting machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58173068A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61276760A (en) * | 1985-05-31 | 1986-12-06 | Ube Ind Ltd | Method for measuring pressure intensifying time |
JPH0216255U (en) * | 1988-03-29 | 1990-02-01 | ||
US5125820A (en) * | 1988-03-29 | 1992-06-30 | Toshiba Kikai Kabushiki Kaisha | Injection pressure control apparatus for a die cast machine |
US5207267A (en) * | 1990-08-09 | 1993-05-04 | Toshiba Kikai Kabushiki Kaisha | Injection control method of die cast machine |
US5855239A (en) * | 1994-01-28 | 1999-01-05 | Toshiba Kikai Kabushiki Kaisha | Method for controlling injection of die casting machine |
-
1982
- 1982-04-01 JP JP5230182A patent/JPS58173068A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61276760A (en) * | 1985-05-31 | 1986-12-06 | Ube Ind Ltd | Method for measuring pressure intensifying time |
JPH0216255U (en) * | 1988-03-29 | 1990-02-01 | ||
JPH0329003Y2 (en) * | 1988-03-29 | 1991-06-20 | ||
US5125820A (en) * | 1988-03-29 | 1992-06-30 | Toshiba Kikai Kabushiki Kaisha | Injection pressure control apparatus for a die cast machine |
US5207267A (en) * | 1990-08-09 | 1993-05-04 | Toshiba Kikai Kabushiki Kaisha | Injection control method of die cast machine |
US5855239A (en) * | 1994-01-28 | 1999-01-05 | Toshiba Kikai Kabushiki Kaisha | Method for controlling injection of die casting machine |
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