JPH0371214B2 - - Google Patents
Info
- Publication number
- JPH0371214B2 JPH0371214B2 JP10624684A JP10624684A JPH0371214B2 JP H0371214 B2 JPH0371214 B2 JP H0371214B2 JP 10624684 A JP10624684 A JP 10624684A JP 10624684 A JP10624684 A JP 10624684A JP H0371214 B2 JPH0371214 B2 JP H0371214B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- plunger
- casting machine
- molten metal
- vibrator
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 238000004512 die casting Methods 0.000 claims description 36
- 238000003825 pressing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/203—Injection pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、特殊鋳造法の一つであるダイカスト
法におけるダイカスト機に関し、一層詳細には溶
融金属に対して効果的に振動を付与してキヤビテ
イ隅部までその溶湯金属を導出し且つ、成形後に
製品不良となる巣の発生等を未然に防止するよう
に構成したダイカスト機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die casting machine for die casting, which is one of the special casting methods. The present invention relates to a die-casting machine that is configured to derive the following properties and prevent the occurrence of cavities that may cause product defects after molding.
一般に、ダイカスト機においては油圧シリンダ
に連動するプランジヤ等により溶融金属（以下溶
湯という）を複雑な形状を有する金型のキヤビテ
イに圧入しこれを凝固させて製品を得ている。 Generally, in a die casting machine, a product is obtained by forcing molten metal (hereinafter referred to as molten metal) into a cavity of a mold having a complex shape using a plunger or the like that is linked to a hydraulic cylinder and solidifying the metal.
ところが、前記溶湯は金型のキヤビテイに連通
するスリーブ内孔を高速度で流動しつつ急速に凝
固して硬化することから、キヤビテイ全般に亘つ
て溶湯が行きわたらず、あるいは巣等が発生し、
このため欠陥の少ない製品を得ることは容易でな
く、特に複雑な形状を有する製品を生産する場
合、製品の不良率は40％を超えることがある。 However, since the molten metal flows at high speed through the inner hole of the sleeve that communicates with the mold cavity, it rapidly solidifies and hardens, so the molten metal does not spread throughout the cavity or cavities occur.
For this reason, it is not easy to obtain products with few defects, and especially when producing products with complex shapes, the defective rate of the products can exceed 40%.
そのため、従来では一般鋳造で行われている溶
湯に対する加振作用に着目し、ダイカスト機にお
いても溶湯に振動を付与して可及的に製品の質的
向上と安定化をはかつている。すなわち、一般
に、溶湯に振動を付与すると、当該溶湯は振動し
ている状態で液体から結晶まで生まれて凝固する
ようになるので、製品の厚肉部における金属組織
の微細化が良好となり、実体強度の15％程度の増
大、製品の表面におけるシワ及びピンホール等の
軽減などの効果が得られる。 For this reason, attention has been paid to the vibration effect on the molten metal conventionally performed in general casting, and vibrations are applied to the molten metal in die-casting machines in an effort to improve and stabilize the quality of the product as much as possible. In other words, in general, when vibration is applied to molten metal, the molten metal changes from liquid to crystal and solidifies while vibrating, which improves the fineness of the metal structure in the thick parts of the product and improves its physical strength. This results in effects such as an approximately 15% increase in the amount of carbon dioxide and a reduction in wrinkles, pinholes, etc. on the surface of the product.
しかしながら、このような従来のダイカスト機
にあつては、溶湯に接触する金型の部品である中
子または押出ピンを介して振動を溶湯に付与する
ようになつていたため、溶湯の先端部にまで振動
が十分進行せず、溶湯先端部の流動性の低下によ
り金型の内孔の細隙部まで溶湯が流入しないの
で、製品の形状欠陥による不良品の発生が多いと
いう問題点があつた。 However, in such conventional die-casting machines, vibrations are applied to the molten metal through the core or extrusion pin, which is a part of the mold that comes into contact with the molten metal. There was a problem in that the vibration did not progress sufficiently and the molten metal did not flow into the slits in the inner hole of the mold due to the reduced fluidity at the tip of the molten metal, resulting in a high number of defective products due to shape defects.
また、中子、押出ピン等に対する冷却が構造上
十分に行なわれ得ないことから、前記中子、押出
ピンがその動作時溶湯と接触して高温度となり、
溶湯の溶解作用に基づく侵食作用で短期間で変形
または機能不良となつて前述と同様に不良製品が
発生したりまたダイカスト機の運転継続が不可能
になるという問題点もあつた。 In addition, because the core, ejector pin, etc. cannot be cooled sufficiently due to their structure, the core, ejector pin, etc. come into contact with the molten metal during operation and become high in temperature.
The erosion caused by the melting action of the molten metal causes deformation or malfunction in a short period of time, leading to the production of defective products as described above, or the continued operation of the die-casting machine.
本発明は、前記の不都合を解消するためになさ
れたものであつて、ダイカスト機を構成するプラ
ンジヤに起振器を装着すると共にプランジヤの先
端部に冷却装置を付設し、前記プランジヤにより
溶湯に振動を付与して、溶湯の先端部まで十分に
振動を伝達し且つプランジヤの冷却も容易に行つ
て製品の一層の質的向上と安定化をはかると同時
にダイカスト機の耐久性の向上をもはかるよう構
成したダイカスト機を提供することを目的とす
る。 The present invention has been made in order to eliminate the above-mentioned disadvantages, and includes an exciter attached to a plunger constituting a die-casting machine, a cooling device attached to the tip of the plunger, and the plunger vibrates the molten metal. By imparting vibrations to the tip of the molten metal and cooling the plunger easily, we aim to further improve and stabilize the quality of the product and at the same time improve the durability of the die-casting machine. The purpose of the present invention is to provide a die-casting machine with the following configurations.
前記目的を達成するために、本発明では金型に
係合しているスリーブの中を摺動可能なプランジ
ヤで溶融金属を押圧し前記金型に画成されたキヤ
ビテイに溶融金属を圧入して成形品を得るダイカ
スト機において、前記プランジヤの外周の一部に
当該プランジヤを介して前記溶融金属に振動を付
与する起振器を設けることを特徴とする。 In order to achieve the above object, the present invention presses the molten metal into a cavity defined in the mold by pressing the molten metal with a plunger that is slidable in a sleeve engaged with the mold. The die casting machine for producing molded products is characterized in that a vibrator is provided on a part of the outer periphery of the plunger to apply vibration to the molten metal through the plunger.
以下、本発明に係るダイカスト機について好適
な実施例を挙げ、添付の図面に基づいて詳細に説
明する。 EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiments of a die casting machine according to the present invention will be described in detail based on the accompanying drawings.
第１図は、本発明のダイカスト機の第１の実施
例を示す断面図である。第１図に示すように、ダ
イカスト機の構成部品であるダイプレート１０に
は固定金型１２が取付付けられ、この固定金型１
２にはこれと対をなす可動金型１４が対設され
る。前記ダイプレート１０および固定金型１２に
はスリーブ１６が貫挿され、その先端開口部は前
記固定金型１２並びに可動金型１４によつて画成
されるキヤビテイ１８に連通する。一方、前記ス
リーブ１６の内孔２０にはその壁面上部に注入口
２１を形成する。後述するようにこの注入口２１
を介して図示しない所定の手段により内孔２０に
溶湯２２が注入される。スリーブ１６の内孔２０
には、さらに後端開口部より押圧ヘツド２４を有
するプランジヤ２６が摺動自在に挿入される。前
記プランジヤ２６の後端部は前記ダイプレート１
０に支持台２８を介して取付られた油圧シリンダ
３０のピストンロツド３２に連結される。 FIG. 1 is a sectional view showing a first embodiment of a die casting machine of the present invention. As shown in FIG. 1, a fixed mold 12 is attached to a die plate 10, which is a component of a die casting machine.
2 is provided with a movable mold 14 that is paired with the movable mold 14. A sleeve 16 is inserted through the die plate 10 and the fixed mold 12, and its tip opening communicates with a cavity 18 defined by the fixed mold 12 and the movable mold 14. Meanwhile, an injection port 21 is formed in the inner hole 20 of the sleeve 16 at the upper part of the wall surface thereof. As described later, this injection port 21
A molten metal 22 is injected into the inner hole 20 by a predetermined means (not shown) through the molten metal 22 . Inner hole 20 of sleeve 16
A plunger 26 having a pressing head 24 is further slidably inserted into the rear end opening. The rear end of the plunger 26 is connected to the die plate 1.
The piston rod 32 of a hydraulic cylinder 30 is connected to the piston rod 32 of a hydraulic cylinder 30, which is attached to the hydraulic cylinder 30 via a support stand 28.
次に、前記プランジヤ２６は、第２図にも示す
ように、そのシヤフト３４の一端に前述した押圧
ヘツド２４を有し、他端にスペーサ３６を介して
後述する起振器３８が嵌挿固着される。前記押圧
ヘツド２４には内部に室４０が形成され、この室
４０にはシヤフト３４の内部に嵌挿された給水管
４２より冷却水が循環されるようになつている
（第２図中の矢印ａ参照）。なお、図中、参照符号
４４は給水管４２のシヤフト３４側給水口を示
す。 Next, as shown in FIG. 2, the plunger 26 has the aforementioned pressing head 24 at one end of its shaft 34, and an exciter 38, which will be described later, is inserted and fixed at the other end via a spacer 36. be done. A chamber 40 is formed inside the press head 24, and cooling water is circulated into this chamber 40 from a water supply pipe 42 fitted inside the shaft 34 (as indicated by the arrow in FIG. 2). (see a). In the figure, reference numeral 44 indicates a water supply port of the water supply pipe 42 on the shaft 34 side.
一方、前記起振器３８は、第３図並びに第４図
に示すように、円筒形の磁性材料からなると共に
一端部においてスペーサ３６を介してシヤフト３
４に固着される振動子４６とこの振動子４６に巻
装されると共に高周波電流が流れるコイル４８と
から構成される。この場合、前記振動子４６はニ
ツケルの薄板を巻いて筒体にしたあと、コイル４
８の入るスリツトが円周方向に沿つて複数個画成
され、その角柱状の胴部４６Ａの周囲にループを
なすようにコイル４８が巻かれている。 On the other hand, as shown in FIGS. 3 and 4, the vibrator 38 is made of a cylindrical magnetic material and is connected to the shaft 3 through a spacer 36 at one end.
4 and a coil 48 wound around the vibrator 46 and through which a high-frequency current flows. In this case, the vibrator 46 is made into a cylinder by winding a thin nickel plate, and then the coil 46 is made into a cylinder.
A plurality of slits into which 8 are inserted are defined along the circumferential direction, and a coil 48 is wound around the prismatic body 46A to form a loop.
本発明のダイカスト機は以上のように構成さ
れ、次にその作用並びに効果について説明する。 The die casting machine of the present invention is constructed as described above, and its operation and effects will be explained next.
注入口２１を介して図示しない溶湯注入手段に
より溶湯２２がスリーブ１６内に注入されると、
先ず、油圧シリンダ３０によりプランジヤ２６が
第１図中の矢印ｂの方向に移動する。このため、
スリーブ１６内の溶湯が前記金型１２，１４間の
キヤビテイ１８に圧入される。低温状態にある金
型１２，１４間のキヤビテイ１８に流入した溶湯
は逐次冷却されて凝固し、可動金型１４が固定金
型１２により引き離された際に所望の製品となつ
て取り出される。 When the molten metal 22 is injected into the sleeve 16 by a molten metal injection means (not shown) through the injection port 21,
First, the plunger 26 is moved by the hydraulic cylinder 30 in the direction of arrow b in FIG. For this reason,
The molten metal in the sleeve 16 is press-fitted into the cavity 18 between the molds 12 and 14. The molten metal flowing into the cavity 18 between the molds 12 and 14 in a low temperature state is successively cooled and solidified, and when the movable mold 14 is separated by the fixed mold 12, it is taken out as a desired product.
その際、本実施例ではプランジヤ２６の後端部
に設けた起振器３８に対し、コイル４８を介して
高周波電流が流れる。これにより、振動子４６の
胴部４６Ａは磁化され、前記高周波電流の周期的
な増減に応じて第２図中の矢印ｃの方向に伸縮
し、結局、振動子４６は前記高周波電流と同じ周
波数の高周波振動を惹起する。そして、前記振動
はスペーサ３６及びシヤフト３４を第２図中の矢
印ｄの方向に伝わり、押圧ヘツド２４に達する。
そこで、前記ヘツド２４に達した振動は液体であ
る溶湯２２に伝達され、その内部を進行して溶湯
２２の先端部２２Ａ（第５図参照）に至り、当該
先端部２２Ａをも振動させる。この結果、先端部
２２Ａの流動性は非常に良好となり、キヤビテイ
１８の細隙部１８Ａ（第５図参照）まで溶湯２２
が十分流入する。なお、前記振動はプランジヤ２
６が移動を開始すると略同時に溶湯２２に対して
付与され、溶湯２２がキヤビテイ１８の中で凝固
を完了するまで続けられる。溶湯２２への振動の
付与継続時間は製品の肉厚、大きさによつて変化
するが0.5〜13秒程度である。なお、その際、本
実施例では溶湯２２を押圧する押圧ヘツド２４が
前述した給水管４２を介して冷却水で効果的に冷
却される。従つて、前記押圧ヘツド２４の前面部
２４Ａは低温度に保たれ、前面部２４Ａにある溶
湯２２は直ちに硬化して凝固層５０（第５図参
照）を生ずるようになり、ヘツド２４に伝えられ
た振動は凝固層５０を介して溶湯２２に伝達され
る。すなわち、高温の溶湯に対し、押圧ヘツド２
４の前面部２４Ａは直接接触することなく、この
ため前面部２４Ａは全く溶湯２２の侵食作用を受
けることはない。また、本実施例において起振器
３８を構成する円筒形の振動子４６は従来の一般
的な角形の打抜積層方式で作られた振動子とは異
なり、特に薄い（0.01〜0.08mm）ニツケルの薄板
を巻いて作られている。従つて、コイル４８を流
れる高周波電流による渦電流、振動に伴う内部摩
擦及び磁気ヒステリシス効果等振動の周波数の増
加に伴つて大きくなる振動子４６の躯幹における
発熱は比較的少なく、高周波電流として与えられ
る電気エネルギを効率良く振動に変換することが
できる。例えば、本実施例では振動の周波数が
19KHz、振動の強さはヘツドの前面部２４Ａにお
いて
92Watt／cm2で設定すると好適な結果が得られ
た。また、より高い周波数の振動（例えば30K
Hz）を発生させる場合には、振動子４６の発熱量
が増大するので、振動子４６に対する空冷等の強
制冷却方法が考えられるが、振動を生じさせるた
めの高周波電流をコイル４８に流す時間は短く、
ダイカスト機の全運転時間の0.5％程度であるの
で、ほとんどの場合前記強制冷却は不要となる。 At this time, in this embodiment, a high frequency current flows through a coil 48 to an exciter 38 provided at the rear end of the plunger 26 . As a result, the body 46A of the vibrator 46 is magnetized and expands and contracts in the direction of the arrow c in FIG. 2 in accordance with the periodic increase and decrease of the high-frequency current. induces high-frequency vibrations. The vibration is transmitted through the spacer 36 and the shaft 34 in the direction of arrow d in FIG. 2, and reaches the pressing head 24.
Therefore, the vibrations reaching the head 24 are transmitted to the molten metal 22, which is a liquid, and travel inside the molten metal 22 to reach the tip 22A (see FIG. 5) of the molten metal 22, causing the tip 22A to also vibrate. As a result, the fluidity of the tip 22A is very good, and the molten metal 22A reaches the slit 18A of the cavity 18 (see FIG. 5).
will flow sufficiently. Note that the vibration is generated by the plunger 2.
6 is applied to the molten metal 22 substantially at the same time as it starts moving, and continues until the molten metal 22 completes solidification in the cavity 18. The duration of applying vibration to the molten metal 22 varies depending on the thickness and size of the product, but is approximately 0.5 to 13 seconds. In this case, in this embodiment, the press head 24 that presses the molten metal 22 is effectively cooled with cooling water via the water supply pipe 42 described above. Therefore, the front surface 24A of the pressing head 24 is kept at a low temperature, and the molten metal 22 on the front surface 24A immediately hardens to form a solidified layer 50 (see FIG. 5) and is transferred to the head 24. The vibrations are transmitted to the molten metal 22 via the solidified layer 50. In other words, the press head 2
The front surface portion 24A of No. 4 does not come into direct contact with each other, so that the front surface portion 24A is not subjected to the corrosive action of the molten metal 22 at all. Further, in this embodiment, the cylindrical vibrator 46 constituting the vibrator 38 is made of particularly thin (0.01 to 0.08 mm) nickel, unlike the conventional general rectangular vibrator made by a laminated punching method. It is made by rolling thin sheets of paper. Therefore, heat generation in the body of the vibrator 46, which increases as the frequency of vibration increases, such as eddy current due to the high-frequency current flowing through the coil 48, internal friction due to vibration, and magnetic hysteresis effect, is relatively small and is given as a high-frequency current. Electrical energy can be efficiently converted into vibration. For example, in this example, the vibration frequency is
Favorable results were obtained when the vibration intensity was set at 19KHz and the vibration intensity was 92Watt/cm 2 at the front surface 24A of the head. Also, higher frequency vibrations (e.g. 30K
Hz), the amount of heat generated by the vibrator 46 increases, so forced cooling methods such as air cooling for the vibrator 46 can be considered. short,
Since it is about 0.5% of the total operating time of the die-casting machine, the forced cooling is not necessary in most cases.
加えて、本実施例における起振器３８はシヤフ
ト３４に嵌挿され、一方の端のみが固着されてお
り、溶湯２２を高圧でキヤビテイ１８の中に圧入
するために油圧シリンンダ３０のピストンロツド
３２より加えられる大きな力がシヤフト３４に付
加されても振動子４６は自由に振動し、発生した
振動は完全に溶湯２２に伝えられる。また、略円
筒形を有する起振器３８は外形が小型であるが発
生する振動の強さは比較的大きく、さらにダイカ
スト機の構造上、起振器３８の位置する近傍は未
利用の空間であるために本発明の実施に際して必
要なダイカスト機の部分改造は小規模なものにと
どまる。 In addition, the exciter 38 in this embodiment is fitted into the shaft 34 and fixed at only one end, and is connected to the piston rod 32 of the hydraulic cylinder 30 in order to press the molten metal 22 into the cavity 18 at high pressure. Even when a large force is applied to the shaft 34, the vibrator 46 freely vibrates, and the generated vibrations are completely transmitted to the molten metal 22. Furthermore, although the approximately cylindrical shape of the vibrator 38 is small, the strength of the vibration generated is relatively large. Furthermore, due to the structure of the die-casting machine, the vicinity of the vibrator 38 is an unused space. Therefore, the partial modification of the die-casting machine required to implement the present invention is limited to a small scale.
次に、第６図に本発明のダイカスト機の第２の
実施例を示す。 Next, FIG. 6 shows a second embodiment of the die casting machine of the present invention.
この実施例では起振器３８をフエライト磁器で
作られた円筒形の振動子５２，５４、導磁リング
５６，５８及び前記振動子５２の円周方向にルー
プをなすように巻き付けられたコイル６０等で構
成し、コイル６０に高周波電流が付与されると振
動子５２，５４が磁化されて第６図中の矢印ｅの
方向に振動するようにしている。 In this embodiment, the vibrator 38 includes cylindrical vibrators 52 and 54 made of ferrite porcelain, magnetic conductive rings 56 and 58, and a coil 60 wound in a loop in the circumferential direction of the vibrator 52. When a high frequency current is applied to the coil 60, the vibrators 52 and 54 are magnetized and vibrate in the direction of arrow e in FIG. 6.
この実施例によれば、振動子５２，５４のフエ
ライト磁器は電気抵抗が極度に高い絶縁体であ
り、コイル６０を流れる高周波電流によつて生ず
る渦電流は少なく、特に周波数の高い振動（例え
ば52KHz）を発生するのに適しているが機械的強
度が低く、強い振動を発生することが容易でない
ので、小型のダイカスト機で緻密な製品を作る際
の起振器３８として好適となる。 According to this embodiment, the ferrite porcelain of the vibrators 52 and 54 is an insulator with extremely high electrical resistance, and the eddy current generated by the high frequency current flowing through the coil 60 is small. ), but its mechanical strength is low and it is difficult to generate strong vibrations, so it is suitable as the vibrator 38 when making dense products with a small die-casting machine.
なお、本発明の以上の実施例はアルミニウム系
合金を取扱う一般的な横型ダイカスト機を対象に
して説明した。然しながら、製品の形状が簡単且
つ肉厚で金型のキヤビテイに圧入する際の溶湯に
付加する圧力が小さい低圧ダイカスト機、また
は、プランジヤの周辺に未利用の空間の多い立型
ダイカスト機等においては、市販されている一般
的な超音波加工機等に用いられる超音波振動子を
起振器としてプランジヤに固定して設けることに
より本発明を実施することができることは言うま
でもない。 The above embodiments of the present invention have been described with reference to a general horizontal die-casting machine that handles aluminum-based alloys. However, in low-pressure die-casting machines where the product shape is simple and thick and the pressure applied to the molten metal is small when press-fitting into the mold cavity, or in vertical die-casting machines where there is a lot of unused space around the plunger, etc. It goes without saying that the present invention can be carried out by fixing an ultrasonic vibrator used in a commercially available general ultrasonic processing machine or the like to the plunger as an exciter.
本発明によれば、以上のように成形時にプラン
ジヤを介して溶湯へ振動を付与するようにしたの
で、振動を利用した一般鋳造にみられる実体強度
の増大等の副次的な特徴の他に、キヤビテイの細
隙部にまでも溶湯が容易に流入するので製品の形
状欠陥による不良品の発生が著しく減少する。 According to the present invention, since vibration is applied to the molten metal through the plunger during molding as described above, in addition to the secondary characteristics such as increased physical strength seen in general casting using vibrations, Since the molten metal easily flows into the slits of the cavity, the occurrence of defective products due to shape defects is significantly reduced.
しかも、金型に係合するスリーブ内を摺動する
プランジヤの外周の一部に起振器を設けるように
した未利用空間の効果的活用と共に溶湯に対して
効果的に振動を付与でき、製品の一層の質的向上
と安定化が計れると同時にダイカスト機の耐久性
の向上をも計れるという効果が得られる。 Furthermore, by installing a vibrator on a part of the outer periphery of the plunger that slides inside the sleeve that engages with the mold, unused space can be effectively utilized and vibrations can be effectively imparted to the molten metal. This has the effect of further improving the quality and stabilizing the die-casting machine, and at the same time improving the durability of the die-casting machine.
以上、本発明について好適な実施例を挙げて説
明したが、本発明はこの実施例に限定されるもの
ではなく、本発明の要旨を逸脱しない範囲におい
て種々の改良並びに設計の変更が可能なことは勿
論である。 Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design can be made without departing from the gist of the present invention. Of course.
第１図は本発明のダイカスト機の第１の実施例
の断面図、第２図は第１図のダイカスト機の要部
拡大断面図、第３図は第１図のＡ−Ａ線拡大断面
図、第４図は第３図のＢ−Ｂ線断面図、第５図は
第１図のダイカスト機の作用状態を示す断面図、
第６図は本発明のダイカスト機の第２の実施例の
断面図である。
１０……ダイプレート、１２……固定金型、１
４……可動金型、１６……スリーブ、１８……キ
ヤビテイ、１８Ａ……細隙部、２０……内孔、２
２……溶湯、２２Ａ……先端部、２４……押圧ヘ
ツド、２４Ａ……前面部、２６……プランジヤ、
２８……支持台、３０……油圧シリンダ、３２…
…ピストンロツド、３４……シヤフト、３６……
スペーサ、３８……起振器、４０……室、４２…
…給水管、４４……給水口、４６……振動子、４
６……胴部、４８……コイル、５０……凝固層、
５２……振動子、５４……振動子、５６……導磁
リング、５８……導磁リング、６０……コイル。
Fig. 1 is a sectional view of a first embodiment of the die casting machine of the present invention, Fig. 2 is an enlarged sectional view of main parts of the die casting machine of Fig. 1, and Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 1. 4 is a sectional view taken along the line B-B in FIG. 3, and FIG. 5 is a sectional view showing the operating state of the die-casting machine in FIG. 1.
FIG. 6 is a sectional view of a second embodiment of the die casting machine of the present invention. 10...Die plate, 12...Fixed mold, 1
4...Movable mold, 16...Sleeve, 18...Cavity, 18A...Slit part, 20...Inner hole, 2
2... Molten metal, 22A... Tip, 24... Pressing head, 24A... Front part, 26... Plunger,
28... Support stand, 30... Hydraulic cylinder, 32...
...Piston rod, 34...Shaft, 36...
Spacer, 38... Exciter, 40... Chamber, 42...
... Water supply pipe, 44 ... Water supply port, 46 ... Vibrator, 4
6...Body part, 48...Coil, 50...Coagulation layer,
52... Vibrator, 54... Vibrator, 56... Magnetically conductive ring, 58... Magnetically conductive ring, 60... Coil.
Claims (1)
なプランジヤで溶融金属を押圧し前記金型に画成
されたキヤビテイに溶融金属を圧入して成形品を
得るダイカスト機において、前記プランジヤの外
周に当該プランジヤを介して前記溶融金属に振動
を付与する起振器を設けることを特徴とするダイ
カスト機。 ２ 特許請求の範囲第１項記載のダイカスト機に
おいて、前記起振器は円筒形の磁性材料からなる
と共にプランジヤの後端部より嵌挿されてその一
端部においてプランジヤに固定される振動子と、
この振動子に巻装されると共に高周波電流が流れ
るコイルとから構成されてなるダイカスト機。 ３ 特許請求の範囲第２項記載のダイカスト機に
おいて、前記振動子はニツケルの薄板を巻いて形
成されてなるダイカスト機。 ４ 特許請求の範囲第２項記載のダイカスト機に
おいて、前記振動子はフエライト磁器で形成され
てなるダイカスト機。 ５ 特許請求の範囲第１項乃至第４項のいずれか
に記載のダイカスト機において、前記プランジヤ
の先端部に内部に室を備えた押圧ヘツドが設けら
れてなるダイカスト機。 ６ 特許請求の範囲第５項記載のダイカスト機に
おいて、前記押圧ヘツドの内部室にはプランジヤ
の内部を貫通する給水管によつて冷却水が循環す
るように構成されてなるダイカスト機。[Claims] 1. A molded product is obtained by pressing molten metal with a plunger that is slidable in a sleeve engaged with a mold and press-fitting the molten metal into a cavity defined in the mold. A die-casting machine, characterized in that a vibrator is provided on the outer periphery of the plunger for imparting vibrations to the molten metal through the plunger. 2. The die-casting machine according to claim 1, wherein the vibrator is made of a cylindrical magnetic material, and includes a vibrator that is fitted into the rear end of the plunger and fixed to the plunger at one end thereof;
A die-casting machine is comprised of a coil that is wound around this vibrator and through which a high-frequency current flows. 3. The die casting machine according to claim 2, wherein the vibrator is formed by winding a thin nickel plate. 4. The die casting machine according to claim 2, wherein the vibrator is made of ferrite porcelain. 5. A die-casting machine according to any one of claims 1 to 4, wherein a pressing head having a chamber inside is provided at the tip of the plunger. 6. The die-casting machine according to claim 5, wherein cooling water is circulated in the internal chamber of the pressing head by a water supply pipe penetrating the interior of the plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624684A JPS60250866A (en) | 1984-05-25 | 1984-05-25 | Die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624684A JPS60250866A (en) | 1984-05-25 | 1984-05-25 | Die casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60250866A JPS60250866A (en) | 1985-12-11 |
| JPH0371214B2 true JPH0371214B2 (en) | 1991-11-12 |
Family
ID=14428749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10624684A Granted JPS60250866A (en) | 1984-05-25 | 1984-05-25 | Die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250866A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2613481B2 (en) * | 1989-10-06 | 1997-05-28 | 宇部興産株式会社 | Injection molding method |
| IT1280862B1 (en) * | 1995-04-11 | 1998-02-11 | Fiat Auto Spa | PROCEDURE AND DEVICE FOR THE DIE CASTING OF THIXOTROPIC ALUMINUM PARTS. |
| EP0936010A1 (en) * | 1998-02-12 | 1999-08-18 | Didier-Werke Ag | Method and apparatus for pressure casting metals |
| ATE291513T1 (en) * | 2000-10-27 | 2005-04-15 | Frech Oskar Gmbh & Co Kg | HOT CHAMBER DIE CASTING MACHINE AND OPERATING METHOD THEREOF |
| DE502004006725D1 (en) * | 2004-09-30 | 2008-05-15 | Aluwag Ag | Apparatus and method for producing molded parts |
| JP2011036863A (en) * | 2007-05-17 | 2011-02-24 | Yamashiro Seiki Seisakusho:Kk | Metal molding apparatus |
| DE102007058254A1 (en) * | 2007-11-26 | 2009-05-28 | Klein, Friedrich, Prof. Dr. Dr. h.c. | Casting piston rod for a casting machine |
| JP5068836B2 (en) * | 2010-03-24 | 2012-11-07 | ジヤトコ株式会社 | Casting apparatus and casting method |
| JP5555859B2 (en) * | 2010-04-15 | 2014-07-23 | 本多電子株式会社 | Ultrasonic application die casting equipment |
| US20150343526A1 (en) * | 2014-05-30 | 2015-12-03 | Crucible Intellectual Property, Llc | Application of ultrasonic vibrations to molten liquidmetal during injection molding or die casting operations |
| AT522297A1 (en) * | 2019-03-29 | 2020-10-15 | Voestalpine Additive Mfg Center Gmbh | Device and method for producing at least one component, in particular a metallic component |
-
1984
- 1984-05-25 JP JP10624684A patent/JPS60250866A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60250866A (en) | 1985-12-11 |
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