JPH06304732A - Temp. control method of injection sleeve - Google Patents
Temp. control method of injection sleeveInfo
- Publication number
- JPH06304732A JPH06304732A JP9307593A JP9307593A JPH06304732A JP H06304732 A JPH06304732 A JP H06304732A JP 9307593 A JP9307593 A JP 9307593A JP 9307593 A JP9307593 A JP 9307593A JP H06304732 A JPH06304732 A JP H06304732A
- Authority
- JP
- Japan
- Prior art keywords
- injection sleeve
- temp
- injection
- temperature
- axial direction
- 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
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はダイカスト鋳造やスクイ
ズキャスト鋳造などに使用されるダイカストマシンの射
出スリーブの温度制御方法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 for controlling a temperature of an injection sleeve of a die casting machine used for die casting, squeeze casting and the like.
【０００２】[0002]
【従来の技術】図３は従来の射出スリーブの変形状態を
示す縦断面図，図４は図３のＩＶ−ＩＶからみた横断面
図を示す。従来，横型締，竪鋳込型ダイカストマシンで
は，一端部に注湯口１０を有する射出スリーブ７内にプ
ランジャチップ９を摺動自在に収納し，この射出スリー
ブ７の他端部をゲートを介して金型間に形成されたキャ
ビティ６に連通してあり，上記プランジャチップ９の進
入により射出スリーブ７内の溶湯Ａをキャビティ６内へ
充填させて凝固させるようになっている。2. Description of the Related Art FIG. 3 is a vertical sectional view showing a deformed state of a conventional injection sleeve, and FIG. 4 is a horizontal sectional view taken along the line IV-IV in FIG. Conventionally, in a horizontal die clamping and vertical casting die casting machine, a plunger tip 9 is slidably housed in an injection sleeve 7 having a pouring port 10 at one end, and the other end of the injection sleeve 7 is inserted through a gate. It communicates with the cavity 6 formed between the molds, and the molten metal A in the injection sleeve 7 is filled into the cavity 6 by the entry of the plunger tip 9 and solidified.
【０００３】[0003]
【発明が解決しようとする課題】ところで，このような
従来の射出スリーブ７においては，射出スリーブ７の形
状についての問題があった。すなわち，例えば６５０〜
７５０℃の温度を有するアルミニウム合金の溶湯Ａを射
出スリーブ７に注湯すると，溶湯Ａは射出スリーブ７内
でかまぼこ状となり，この溶湯Ａと接触する部分の射出
スリーブ７の温度が上昇し，溶湯Ａと接触しない部分と
比較して膨張する。この場合，射出スリーブ７のうち内
部に溶湯Ａのある下部域は３００℃以上に昇温し，溶湯
Ａのない射出スリーブ７の上部域は１５０〜２５０℃程
度しか昇温しないので，射出スリーブ７はこの温度差に
より膨張寸法に差ができ，図３および図４に誇張して図
示するように，射出スリーブ７の軸方向では下方に凸状
となるとともに，径方向ではむすび状の異形状となる。By the way, in such a conventional injection sleeve 7, there is a problem regarding the shape of the injection sleeve 7. That is, for example, 650
When the molten metal A of aluminum alloy having a temperature of 750 ° C. is poured into the injection sleeve 7, the molten metal A becomes a semi-cylindrical shape inside the injection sleeve 7, and the temperature of the injection sleeve 7 at the portion in contact with the molten metal A rises, It expands compared to the part that does not contact A. In this case, the lower region of the injection sleeve 7 having the molten metal A therein is heated to 300 ° C. or more, and the upper region of the injection sleeve 7 having no molten metal A is heated to about 150 to 250 ° C. This causes a difference in expansion dimension due to this temperature difference, and as shown in an exaggerated manner in FIGS. 3 and 4, the injection sleeve 7 has a downward convex shape in the axial direction and a slim-shaped irregular shape in the radial direction. Become.
【０００４】このため，変形した射出スリーブ７とプラ
ンジャチップ９との間に溶湯が差し込み，プランジャチ
ップ９と射出スリーブ７との間でかじりが生じ，円滑な
射出動作を阻害していた。Therefore, the molten metal is inserted between the deformed injection sleeve 7 and the plunger tip 9, and galling occurs between the plunger tip 9 and the injection sleeve 7, which hinders a smooth injection operation.
【０００５】本発明は，上記従来の問題点に着目し，プ
ランジャチップと射出スリーブとの間でかじりが生じず
円滑な射出動作を行なう射出スリーブの温度制御方法を
提供することである。In view of the above-mentioned conventional problems, the present invention is to provide a method for controlling the temperature of an injection sleeve which is capable of performing a smooth injection operation without galling between the plunger tip and the injection sleeve.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に，本発明に係る射出スリーブの温度制御方法は，型締
された金型のキャビティ内へその水平方向から溶湯を鋳
込むようにした水平状射出スリーブの下部域に配設した
クーラと，前記射出スリーブ軸方向の外周部に複数に区
画した加熱ヒータとを設けて前記射出スリーブの昇降温
を行なうに際し，前記射出スリーブの軸方向複数個所の
温度測定を行ない，射出スリーブの目標温度値と比較
し，実測値と目標値との偏差を前記複数個所に対応した
加熱ヒータおよびクーラにより昇降温して矯正するよう
にした。In order to achieve the above object, the method of controlling the temperature of the injection sleeve according to the present invention is such that the molten metal is cast into the cavity of the mold which is clamped from the horizontal direction. A cooler disposed in the lower region of the horizontal injection sleeve and a plurality of heaters provided on the outer peripheral portion in the axial direction of the injection sleeve are provided to increase or decrease the temperature of the injection sleeve. The temperature of each part was measured, compared with the target temperature value of the injection sleeve, and the deviation between the measured value and the target value was corrected by raising and lowering the temperature with the heaters and coolers corresponding to the above-mentioned plural places.
【０００７】[0007]
【作用】本発明の射出スリーブの温度制御方法では，射
出スリーブへの注湯，射出，充填など一連の運転動作中
における射出スリーブの温度を軸方向に亘って複数個所
測定し，設定した目標温度値となるように射出スリーブ
の下部域の高温個所にはクーラで冷却し，射出スリーブ
の上部域の低温個所は個々の加熱ヒータにより加熱し
て，軸方向に均一な温度分布となるように常時コントロ
ールする。したがって，射出スリーブの高低温度の膨張
差による反りや曲がりなどの異常を起こすこともなく，
また破損することもない。According to the temperature control method of the injection sleeve of the present invention, the temperature of the injection sleeve during a series of operating operations such as pouring, injection, and filling of the injection sleeve is measured at a plurality of points in the axial direction, and the set target temperature is set. The high temperature part of the lower part of the injection sleeve is cooled by a cooler so that the value becomes a value, and the low temperature part of the upper part of the injection sleeve is heated by individual heaters so that a uniform temperature distribution is obtained in the axial direction at all times. To control. Therefore, there will be no abnormalities such as warpage or bending due to the difference in expansion of the injection sleeve at high and low temperatures.
Also, it will not be damaged.
【０００８】[0008]
【実施例】以下に，本発明に係る射出スリーブの温度制
御方法の具体的実施例を図面を参照して詳細に説明す
る。図１は本発明の一実施例を示す射出スリーブの縦断
面図，図２は図１のＩＩ−ＩＩからみた横断面図であ
る。図中，１は金型であって，マシンベース１２上に立
設された固定プレート２に取付けられた固定金型３と，
前記固定金型３に対応する移動プレート５に取付けられ
た移動金型４よりなり，固定プレート２には固定金型３
の湯道１１を介してキャビティ６内に連通する射出スリ
ーブ７が装着され，この射出スリーブ７には図示しない
射出シリンダの射出プランジャロッド８の先端に取付け
られたプランジャチップ９が前後摺動自在に内装されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the temperature control method for an injection sleeve according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a vertical sectional view of an injection sleeve showing an embodiment of the present invention, and FIG. 2 is a horizontal sectional view taken along line II-II of FIG. In the figure, 1 is a mold, and a fixed mold 3 attached to a fixed plate 2 provided upright on a machine base 12,
The fixed mold 3 comprises a movable mold 4 attached to a movable plate 5 corresponding to the fixed mold 3, and the fixed plate 2 includes a fixed mold 3
An injection sleeve 7 communicating with the inside of the cavity 6 via a runner 11 is attached, and a plunger tip 9 attached to the tip of an injection plunger rod 8 of an injection cylinder (not shown) is slidable back and forth. It is decorated.
【０００９】１０は所定金属の溶湯Ａの注湯口であり，
射出開始前のプランジャチップ９の直前に設けられ射出
開始後はプランジャチップ９により閉塞されるようにな
っている。符号１３はタイロッドである。図２におい
て，射出スリーブ７の中心線より下半分の領域を下部域
Ｘ，上半分の領域を上部域Ｙとすると，射出スリーブ７
の下部域Ｘには注湯口１０から注湯された例えば６５０
〜７５０℃の温度を有するアルミニウム合金の溶湯Ａが
貯溜される。Reference numeral 10 is a pouring port for a molten metal A of a predetermined metal,
It is provided immediately before the plunger tip 9 before the start of injection and is closed by the plunger tip 9 after the start of injection. Reference numeral 13 is a tie rod. In FIG. 2, assuming that the lower half region of the injection sleeve 7 is the lower region X and the upper half region thereof is the upper region Y, the injection sleeve 7
For example, 650 poured from the pouring port 10 into the lower area X of
A molten aluminum alloy A having a temperature of ˜750 ° C. is stored.
【００１０】したがって，射出スリーブ７の下部域Ｘの
溶湯Ａと接触している部分は４００℃以上に昇温するた
めに，射出スリーブ７の下部域Ｘの軸方向にクーラ１５
が埋設されている。該クーラ１５は複数の配管（本実施
例では往復路計４組）から構成され，図示しない冷却ポ
ンプに接続され冷却水を通水可能な構造となっており，
射出スリーブ７の下部域Ｘの温度上昇に伴う膨張を防止
するようになっている。Therefore, since the temperature of the portion of the lower region X of the injection sleeve 7 which is in contact with the molten metal A is raised to 400 ° C. or higher, the cooler 15 is axially moved in the lower region X of the injection sleeve 7.
Is buried. The cooler 15 is composed of a plurality of pipes (four sets of reciprocating passages in this embodiment), is connected to a cooling pump (not shown), and has a structure capable of passing cooling water.
Expansion of the lower area X of the injection sleeve 7 due to temperature rise is prevented.
【００１１】上記クーラ１５内の冷却水による射出スリ
ーブ７の下部域Ｘの過冷却を防止するとともに，上部域
Ｙが下部域Ｘ程昇温しないので上部域Ｙの昇温を行なう
ために，射出スリーブ７軸方向の外周部に複数均等区画
（本実施例では３区画にして配設）され，かつ径方向に
上下２区画に分割された加熱装置１６が設けられてお
り，内部にそれぞれ別個に通電できる加熱ヒータ１７が
円環状に埋設された構造となっており，図示しない配線
により接続されている。さらに，区画毎の加熱装置１６
のヒータ容量が変えてあり，例えば，軸方向ではキャビ
ティ６側より注湯口１０側の方を，また，径方向では下
部域Ｘ側より上部域Ｙ側の方をヒータ容量が大きく構成
されている。In order to prevent supercooling of the lower region X of the injection sleeve 7 by the cooling water in the cooler 15 and to raise the upper region Y as much as the lower region X, the injection sleeve 7 is heated. A heating device 16 is provided on the outer peripheral portion in the axial direction, which is divided into a plurality of equal compartments (three compartments in the present embodiment) and is divided into two compartments, the upper and lower compartments in the radial direction, so that the inside can be separately energized. The heater 17 has a structure in which it is embedded in an annular shape, and is connected by wiring not shown. Furthermore, the heating device 16 for each section
The heater capacity is changed, for example, the heater capacity is configured to be larger on the pouring port 10 side than the cavity 6 side in the axial direction, and on the upper area Y side than in the lower area X side in the radial direction. .
【００１２】また，射出スリーブ７の軸方向には離間し
て円周に１個ないし数個の温度センサ１８を凹部に埋設
して取付け（合計６個），図示しない配線により外部と
つなげておく。Further, one or several temperature sensors 18 are embedded in the recesses in the circumference of the injection sleeve 7 so as to be spaced apart from each other in the axial direction (six in total), and are connected to the outside by wiring not shown. .
【００１３】次に，以上のように構成された本発明の実
施例における作用について説明する。ダイカストマシン
に取付けられた射出スリーブ７は一回の射出動作におい
て，例えば，溶湯，射出プランジャチップ９の前進によ
る金型キャビティ６内への溶湯充填，押湯，冷却，型
開，製品取出という一連の動作を行なう。したがって，
例えば約７００℃の高温の溶湯Ａの注湯と排出を繰返す
射出スリーブ７は径方向に均一な温度分布でなく，上部
域Ｙが低く，下部域Ｘが高温となる温度分布を形成し，
かつ射出動作の経過によって射出スリーブ７の軸方向で
昇温，降温が起こり変動する。Next, the operation of the embodiment of the present invention constructed as above will be described. The injection sleeve 7 attached to the die-casting machine performs a series of operations such as, for example, the molten metal, filling the molten metal into the mold cavity 6 by advancing the injection plunger tip 9, feeding, cooling, die opening, and product ejection in one injection operation. Perform the operation of. Therefore,
For example, the injection sleeve 7 that repeatedly pours and discharges the molten metal A having a high temperature of about 700 ° C. does not have a uniform temperature distribution in the radial direction, but forms a temperature distribution in which the upper region Y is low and the lower region X is high,
In addition, the temperature rises and falls in the axial direction of the injection sleeve 7 due to the progress of the injection operation, and changes.
【００１４】したがって，これらの温度分布に起因して
射出スリーブ７は，軸方向においては下方へ緩やかな凸
状を有した反り変形が生じるとともに，径方向において
はむすび状の異常変形を起こし，破損やかじり現象を起
こしていた。そこで，上述の原因となる不均一な温度分
布をできるだけ排除するため，射出動作中温度センサ１
８により軸方向の６個の温度を測定（上部域Ｙで３個，
下部域Ｘで３個）し，目標温度値，例えば，２５０℃と
比較して温度誤差があるときには，下部域Ｘではクーラ
１５で冷却降温する一方で過降温時には加熱ヒータ１７
で加熱昇温し，上部域Ｙでは加熱ヒータ１７のみで加熱
昇温して軸方向に均一になるようにコントロールする。Therefore, due to these temperature distributions, the injection sleeve 7 undergoes a warp deformation having a gentle downward convex in the axial direction and an abnormal deformed wedge shape in the radial direction, resulting in damage. It was causing a biting phenomenon. Therefore, in order to eliminate the non-uniform temperature distribution that causes the above-mentioned causes as much as possible, the temperature sensor during injection operation 1
Measure 6 temperature in the axial direction by 8 (3 in the upper area Y,
If there is a temperature error compared to a target temperature value, for example, 250 ° C., the cooler 15 cools and lowers the temperature in the lower region X while heating the heater 17 when the temperature is excessively low.
In the upper region Y, the temperature is raised by heating, and only in the heater 17, the temperature is raised by heating and controlled so as to be uniform in the axial direction.
【００１５】ダイカストマシン運転では，起動時を含め
て１日数回の潤滑油を射出スリーブ７内面に塗布した
り，また１日約５００回の各ショットの注湯直前に離型
剤をスプレイ塗布するが，このために３００℃以上の高
温では支障があるし，一方，注湯された溶湯Ａがキャビ
ティ６内に充填されるまでできるだけ凝固層を形成させ
ないようにする必要があるので，３００℃近い温度に保
持するので望ましい。したがって，例えば２５０℃を目
標温度値に設定する。こうして射出動作の一連の工程の
中で射出スリーブ７の不均一な変形が防止され，射出ス
リーブ７の異常変形に基づく溶湯Ａのかじり現象を防止
することができて，安全確実な長期連続運転が達成され
る。In the operation of the die casting machine, the lubricating oil is applied several times a day including the start-up to the inner surface of the injection sleeve 7, and the release agent is spray-applied immediately before pouring of each shot about 500 times a day. However, for this reason, there is a problem at a high temperature of 300 ° C. or higher. On the other hand, it is necessary to prevent the solidified layer from forming as much as possible until the poured molten metal A is filled in the cavity 6, so that it is close to 300 ° C. It is desirable because it keeps the temperature. Therefore, for example, 250 ° C. is set as the target temperature value. In this way, uneven deformation of the injection sleeve 7 is prevented in a series of steps of the injection operation, and the galling phenomenon of the molten metal A due to the abnormal deformation of the injection sleeve 7 can be prevented, and safe and long-term continuous operation can be performed. To be achieved.
【００１６】[0016]
【発明の効果】以上説明したことからも明らかなよう
に，本発明に係る射出スリーブの温度制御方法は，型締
された金型のキャビティ内へその水平方向から溶湯を鋳
込むようにした水平状射出スリーブの下部域に配設した
クーラと，前記射出スリーブ軸方向の外周部に複数に区
画した加熱ヒータとを設けて前記射出スリーブの昇降温
を行なうに際し，前記射出スリーブの軸方向複数個所の
温度測定を行ない，射出スリーブの目標温度値と比較
し，実測値と目標値との偏差を前記複数個所に対応した
加熱ヒータおよびクーラにより昇降温して矯正するよう
にしたことにより，射出スリーブの異常変形やかじりが
防止されるので，長期連続安定運転が確実容易に実施さ
れ，メインテナンス性が大幅に向上する。As is apparent from the above description, the method of controlling the temperature of the injection sleeve according to the present invention is such that the molten metal is cast into the cavity of the mold which is clamped from the horizontal direction. When a cooler disposed in the lower region of the injection sleeve and a plurality of heaters provided in the outer peripheral portion in the axial direction of the injection sleeve are provided to raise and lower the temperature of the injection sleeve, a plurality of locations in the axial direction of the injection sleeve are provided. The temperature of the injection sleeve is measured and compared with the target temperature value of the injection sleeve, and the deviation between the measured value and the target value is corrected by raising and lowering the temperature by the heaters and coolers corresponding to the above multiple locations. Since abnormal deformation and galling of the are prevented, long-term continuous stable operation can be performed reliably and easily, and the maintainability is greatly improved.
【図１】本発明の一実施例を示す射出スリーブの縦断面
図である。FIG. 1 is a vertical sectional view of an injection sleeve showing an embodiment of the present invention.
【図２】図１のＩＩ−ＩＩからみた横断面図である。FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
【図３】従来の射出スリーブの変形状態を示す縦断面図
である。FIG. 3 is a vertical sectional view showing a deformed state of a conventional injection sleeve.
【図４】図３のＩＶ−ＩＶからみた横断面図である。4 is a cross-sectional view taken along the line IV-IV of FIG.
１ 金型 ３ 固定金型 ４ 移動金型 ６ キャビティ ７ 射出スリーブ ９ プランジャチップ １０ 注湯口 １５ クーラ １６ 加熱装置 １７ 加熱ヒータ １８ 温度センサ 1 mold 3 fixed mold 4 moving mold 6 cavity 7 injection sleeve 9 plunger tip 10 pouring spout 15 cooler 16 heating device 17 heating heater 18 temperature sensor
Claims (1)
平方向から溶湯を鋳込むようにした水平状射出スリーブ
の下部域に配設したクーラと，前記射出スリーブ軸方向
の外周部に複数に区画した加熱ヒータとを設けて前記射
出スリーブの昇降温を行なうに際し，前記射出スリーブ
の軸方向複数個所の温度測定を行ない，射出スリーブの
目標温度値と比較し，実測値と目標値との偏差を前記複
数個所に対応した加熱ヒータおよびクーラにより昇降温
して矯正するようにしたことを特徴とする射出スリーブ
の温度制御方法。1. A cooler disposed in a lower region of a horizontal injection sleeve for pouring molten metal into a cavity of a mold which is clamped from the horizontal direction, and a plurality of coolers on an outer peripheral portion in the axial direction of the injection sleeve. When raising and lowering the temperature of the injection sleeve by providing a heating heater divided into two parts, the temperature of the injection sleeve is measured at a plurality of positions in the axial direction and compared with the target temperature value of the injection sleeve to compare the measured value with the target value. A method for controlling the temperature of an injection sleeve, wherein the deviation is raised and lowered by a heater and a cooler corresponding to the plurality of locations to correct the deviation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9307593A JPH06304732A (en) | 1993-04-20 | 1993-04-20 | Temp. control method of injection sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9307593A JPH06304732A (en) | 1993-04-20 | 1993-04-20 | Temp. control method of injection sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06304732A true JPH06304732A (en) | 1994-11-01 |
Family
ID=14072401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9307593A Pending JPH06304732A (en) | 1993-04-20 | 1993-04-20 | Temp. control method of injection sleeve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06304732A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997006907A1 (en) * | 1995-08-16 | 1997-02-27 | Commonwealth Scientific And Industrial Research Organisation | Die casting devices |
| JP2011206827A (en) * | 2010-03-30 | 2011-10-20 | Die Engineering:Kk | Plunger sleeve structure of die casting machine |
| JP2015157300A (en) * | 2014-02-24 | 2015-09-03 | 宇部興産機械株式会社 | Casting mold die cast machine injection sleeve and injection sleeve temperature control method |
| CN109226715A (en) * | 2018-10-09 | 2019-01-18 | 广州市型腔模具制造有限公司 | A kind of inner eccentric holes moulding mixture cylinder cooling system |
-
1993
- 1993-04-20 JP JP9307593A patent/JPH06304732A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997006907A1 (en) * | 1995-08-16 | 1997-02-27 | Commonwealth Scientific And Industrial Research Organisation | Die casting devices |
| JP2011206827A (en) * | 2010-03-30 | 2011-10-20 | Die Engineering:Kk | Plunger sleeve structure of die casting machine |
| JP2015157300A (en) * | 2014-02-24 | 2015-09-03 | 宇部興産機械株式会社 | Casting mold die cast machine injection sleeve and injection sleeve temperature control method |
| CN109226715A (en) * | 2018-10-09 | 2019-01-18 | 广州市型腔模具制造有限公司 | A kind of inner eccentric holes moulding mixture cylinder cooling system |
| WO2020073584A1 (en) * | 2018-10-09 | 2020-04-16 | 广州市型腔模具制造有限公司 | Inner-hole eccentric type barrel cooling system |
| CN109226715B (en) * | 2018-10-09 | 2024-03-12 | 广州市型腔模具制造有限公司 | Inner hole eccentric type charging barrel cooling system |
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