08307twfl.doc/006 修1E曰期92.5 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、肉 」合、鹫 施方式及圖式簡單說明） 本發明是有關於一種壓鑄成型設備。特別是關於_ 鎂合金壓鑄機熔爐結構，可適用於鎂合金壓鑄成型。® 隨著高科技的發展，日常生活的器具，例如最常 筆記型電腦、行動電話、VCD、DVD等3C品外殼，、^、 又機 車、手工具及腳踏車等零組件，都會採用鎂合金材料製進 以減低其重量及增加其強度，也使其外殼較美觀。這^器 具的錶合金外威寺等，一*般是由溶融狀態的鏡合金材料 經由壓鑄方法，射出成型，或其他方式製造。目前，錶合 金已廣泛應用在器具零件的製造。 第1圖繪示，傳統鎂合金壓鑄成型的設備系統，其 包括一模具單元50以及一熔爐部分。熔爐包括一熔湯坩 堝以裝盛熔湯52。於熔湯坩上方有一上蓋，覆蓋於熔湯坩 上部。熔湯坩內有一熔湯射出單元，其包括末端的一鵝頸 58，而其基部主要包括一熔湯入口 54及一活塞56，以推 動太谷湯’使其由鵝頸58 (gooseneck)，射出熔湯52至模 具單元50以成型。由於傳統的熔爐結構，爲習此技藝者 所熟知，不於此詳述。然而，傳統的熔爐結構，經本發明 人仔細分析’發現有諸多缺點。以下僅針對其產生缺點的 部分進一步明。08307twfl.doc / 006 Rev. 1E date 92.5 发明, description of the invention (the description of the invention should be stated: the technical field to which the invention belongs, the prior art, meat, combination, application methods and diagrams) The invention relates to a die casting Molding equipment. Especially about _ magnesium alloy die-casting machine furnace structure, which can be applied to magnesium alloy die-casting. ® With the development of high technology, daily life appliances, such as the most commonly used 3C products such as notebook computers, mobile phones, VCDs, DVDs, and other components such as motorcycles, hand tools, and bicycles, will use magnesium alloy materials. Made to reduce its weight and increase its strength, it also makes its shell more beautiful. The surface alloy of this instrument, such as Waiwei Temple, is generally manufactured from a molten mirror alloy material through a die-casting method, injection molding, or other methods. At present, watch alloys have been widely used in the manufacture of appliance parts. FIG. 1 shows a conventional magnesium alloy die-casting equipment system, which includes a mold unit 50 and a furnace part. The furnace includes a molten soup crucible to hold molten soup 52. There is an upper cover above the molten soup crucible, which covers the upper part of the molten soup crucible. There is a molten soup injection unit in the molten soup crucible, which includes a gooseneck 58 at the end, and its base mainly includes a molten soup inlet 54 and a piston 56 to push Taigu Soup 'from the gooseneck 58, The molten soup 52 is injected into the mold unit 50 to be molded. Since the traditional furnace structure is well known to those skilled in the art, it will not be described in detail here. However, the conventional furnace structure was analyzed carefully by the inventors' and found that there are many disadvantages. The following only explains the disadvantages.
第2A圖繪示，傳統的熔爐結構的一剖面圖。第2B 08307twfl.doc/006 f爹正臼其月92.5.7 圖繪示，對應於第2A的傳統熔爐結構，其另一方向之剖 面圖。於第2A-2B圖中，熔湯52由熔湯坩堝所裝盛。熔 湯坩煱的外部三邊有加熱器60a，60b，60c。這些加熱器 用以獎鎂合金原料塊熔化，加熱至預定的溫度。加熱器也 可僅設置於兩邊。 其中，熔爐結構包括一熔湯射出單元，其包括末端 的鵝頸58及基端的壓出機構58’。然而要注意的是，傳統 上，熔爐在靠近鵝頸58的一邊不具有加熱器。這是爲了 使鵝頸58的長度維持一短長度。如果有鵝頸58的一邊設 置加熱器，則鵝頸58的長度勢必須加長。其鵝頸58長度 增加的缺點爲，若欲射出的熔湯，由於其經過太長的鵝頸 58，因而冷卻，致使壓鑄充塡困難。 然而，如果維持僅三邊加熱，熔湯在接近鵝頸58的 一邊，因其溫度下降，容易造成成份之分離。這又引起另 一問題。當然，加裝一加熱器於靠近鵝頸58的一邊，如 上述的考量，並不適當。因此，傳統的熔爐結構，其一直 都有缺點，其兩者缺點，尙未有同時解決的方法。 由於上述的的安排，基本上，傳統的熔爐結構，會 有熔湯52的溫度分布不均，而也造成成份不均的現象。 傳統的熔爐結構，除了上述的缺點外，另外還有一 些問題。第3圖繪示傳統的熔爐結構，其上蓋的剖面圖。 於第3圖中，上蓋有一進料開口 62。原料塊68，例如鎂 合金塊，經一滑板66，被投入;t甘堝，經加熱熔化成爲熔湯 52。進料開口 62在傳統上，是由一上下掀動的，掀蓋64 08307twfl .doc/006 修IE日期92.5.7 蓋合。當要投入原料塊68時，掀蓋64被掀開。投料完畢 後，又將掀蓋64覆蓋於進料開□ 62。 以第3圖的掀蓋64方式，開啓進料開口 62會造成 氣體的擾動，如此使得保護氣體的損失。一般，因高溫的 鎂合金熔湯極易燃燒’其上表面會有一層保護氣體。一般 是含氟的SF0氣體，其價格因環保因素，很昂貴。而且也 因環保因素的考量，應盡量不浪費SF6氣體。然而，如果 採用掀蓋64，其開啓關閉的機制，皆會引起極大的氣體擾 動，致使保護氣體的損失。 有鑑於此，本發明提供一熔爐結構，在不增長鵝頸的 長度下，其具有使熔湯溫度均句的效果。 本發明提供一熔爐結構，其包括一滑動門，取代傳統 掀起方式的機制’用以啓閉進料口，如此避免保護氣體的 擾動，降低保護氣體的損失。 本發明提供一熔爐結構。此熔爐結構適用於鎂合金 壓鑄成型，包括一熔湯坩煱，以裝盛熔湯。一上蓋覆蓋於 熔湯坩堝上部。上盖有一進料開口，使原料塊投入其中。 一滑動門可關閉或開啓此進料開口。一幫浦於熔湯堪堝 內’用以驅動使熔湯循環流動。一熔湯射出單元，其包括 末端的一鵝頸。於鵝頸周圍，設置有一保熱器，例如中周 波加熱器’以維ί寸溶溫度。瑢湯坩煱外部設置複數個加 熱器以熔化原料塊。 上述之熔爐L構中’其幫浦包括一熔湯輸出管，具 有-方向指向溫度可能較_1位，使關循環流動， 561082 08307twfl.doc/006 修正日期92.5.7 促使溫度均勻。 上述之熔爐結構中，此幫浦位於接近該些外壁加熱 器其一。 上述之熔爐結構中，其中該幫浦位於該熔湯坩渦中， 該熔湯具有較高溫度之一處。 爲讓本發明之上述目的、特徵、和優點能更明顯易 懂，下文特舉一較佳實施例，並配合所附圖式，作詳細說 明如下： ^ 圖式之簡單說明： 第1圖繪示，傳統鎂合金壓鑄成型的熔解設備系統； 第2Α圖繪示，傳統的熔爐結構的一剖面圖； 第2B圖繪示，對應於第2A的傳統熔爐結構，其另一 方向之剖面圖； 第3圖繪示傳統的熔爐結構，其上蓋的剖面圖； 第4圖繪示依照本發明，熔爐結構之上視剖面圖； 第5A圖繪示依照本發明，滑動門的結構側剖面圖；以 及 · 第5B圖繪示依照本發明，滑動門的結構上視圖。 標號說明： 50 模具單元 52 熔湯 54 熔湯入口 活塞 7 56 561082 修正日期92.5.7 08307twfl.doc/006 58 鵝頸 60a，60b，60c 加熱器 62 鎂錠進料口 64 掀蓋 66 滑板 68 鎂錠原料塊 70 保熱器 72 幫浦 74 幫浦輸出管 76 滑軌 78 滑動門 80 門把 實施例 本發明的一些特徵，包括於熔湯坩堝內，設置一幫浦， 用以使熔湯循環流動，以增進熔湯溫度均勻，使維持其成 份。另外，又在鵝頸周圍，設置一保熱器，以維持熔湯在 鵝頸內的溫度，不至於冷卻，影響壓鑄成型的效果。 又，本發明之進料口，是由一滑動的滑動門，進行開 與閉的控制，如此避免保護氣體發生擾流而損失。 以下舉一實施例，作爲本發明特徵的描述。第4圖繪 示依照本發明，熔爐結構之上視剖面圖。於第4圖中，熔 湯52裝盛於一熔湯坩渦中。熔湯坩堝周圍有一些加熱器， 但是於有鵝頸58的一邊，不需加熱器。而於熔湯坩堝中， 08307twfl.doc/006 if正曰其月92.5.7 設置有一些元件包括如前述第2A圖的，鵝頸58結構，與 鵝頸58基部的熔湯推進機構58’。鵝頸58與熔湯推進機 構58’一起，構成一熔湯射出單元。關於鵝頸58的部分， 傳統上如第2A圖，熔湯被導至模具單元50，容易因冷卻 而造成壓鑄的困難。本發明爲了解決熔湯通過鵝頸58，造 成冷卻的問題，於鵝頸58周圍，裝設有一保熱器70，例 如是中周波的加熱器，環繞在鵝頸58上。如此，熔湯通 過鵝頸58時，不會明顯冷卻，以維持順利進行模具壓鑄。 另外，於熔湯坩煱中，也可包括設置一幫浦72。幫浦 72有一出口管74。藉由幫浦72驅動熔湯52，使其依出口 管74的方向推動。如此，熔湯52由幫浦72的驅動，造 成熔湯52在坩堝內的循環流動，如此可增進熔湯52溫度 的均勻。以第4圖中加熱器的設置爲例，其僅三邊有加熱 器。熔湯52於此三邊附近，其溫度自然較高。而有鵝頸58 的一邊，因沒有加熱器的設置，其溫度會較低。因此，幫 浦72可設置於有加熱器的一邊，而出口管74朝向溫度較 低的一邊。因此由於幫浦72的作用，可使熔湯52溫度趨 於一較均勻的分布。 至於幫浦72的位置，與出口管74的方向，可依實際 設計而改變。例如，如果熔爐的體積較小，幫浦72的位 也可設置於中間部位。 另外，本發明的鵝頸58，有保熱器70的保溫，允許 鵝頸58的長度增加，其於鵝頸58的一邊也可適當增加一 加熱器。然而，若希望鵝頸58的長度不變，而不增設加 08307twfl.doc/006 修正日期92.5.7 熱器，此時幫浦72的功效，就更爲明顯。 接著關於保護氣體的耗損問題，本發明提出採用滑動 門的方式解決。於第4圖中，熔湯坩堝得上蓋，有一開 口 62，爲料塊68之投入口。料塊68，例如鎂合金錠，由 滑板66，投入坩堝內由加熱器，熔化成熔湯52。一滑動 門78，利用滑動的機制，可關閉或啓開開口 62。 第5A圖繪示依照本發明，滑動門的結構側剖面圖。 而第5B圖繪示依照本發明，滑動門的結構上視圖。於第 5A-5B圖中，滑動門78裝設於一對滑軌76上。滑動門78 上有一們把80。滑動門78沿著滑軌76移動，以關閉開口 62。於熔湯52表面與蓋板之間充有保護氣體。當料塊68 欲被投入時，滑動門78滑動橫移。由於滑動的機制，其 較不會引起保護氣體的擾流，造成保護氣體的損失。 根據上述，本發明對傳統的熔爐結構進行效能分析， 發現有多項缺點，另外針對缺點，提出一些方式，至少可 解決由本發明提出的缺點。本發明至少具有多項優點如下: 1.本發明於熔湯坩堝內，設置一幫浦72，用以使熔 湯循環流動，以增進熔湯溫度均勻，使維持其成份。 2·本發明又於鵝頸58之周圍，設置一保熱器70，以 維持熔湯在鵝頸58內的溫度，不至於冷卻，影響壓鑄成 型的效果。 3·又，本發明之進料口 62,採用由一滑動的滑動門 78，進行開與閉的控制，如此避免保護氣體發生擾流而損 失。 561082 08307twfl.doc/006 ff爹正B其月92.5.7 綜上所述，雖然本發明已以一較佳實施例揭露如上，然其 並非用以限定本發明，任何熟習此技藝者，在不脫離本發 明之精神和範圍內，當可作各種之更動與潤飾，因此本發 明之保護範圍當視後附之申請專利範圍所界定者爲準。Figure 2A shows a cross-sectional view of a conventional furnace structure. Section 2B 08307twfl.doc / 006 f Dazhengjiqiu 92.5.7 The drawing shows a cross-sectional view in the other direction corresponding to the traditional furnace structure of Section 2A. In Figures 2A-2B, the molten soup 52 is contained in a molten soup crucible. There are heaters 60a, 60b, 60c on the three outer sides of the molten crucible. These heaters are used to melt the magnesium alloy raw material block and heat it to a predetermined temperature. The heater can also be installed only on both sides. Among them, the furnace structure includes a molten soup injection unit including a goose neck 58 at the end and an extrusion mechanism 58 'at the base. Note, however, that the furnace has traditionally not been provided with a heater on the side close to the gooseneck 58. This is to keep the length of the gooseneck 58 short. If a heater is provided on one side of the gooseneck 58, the length of the gooseneck 58 must be increased. The disadvantage of increasing the length of the goose neck 58 is that if the molten soup to be ejected passes through the goose neck 58 which is too long, it will cool down, making it difficult to fill the die casting. However, if heating on only three sides is maintained, the molten soup is on the side close to the gooseneck 58 and its temperature is likely to cause separation of ingredients. This raises another problem. Of course, it is not appropriate to install a heater on the side close to the gooseneck 58 as described above. Therefore, the traditional furnace structure has always had disadvantages. Both of them have not been solved at the same time. Due to the above arrangement, basically, in the conventional furnace structure, the temperature distribution of the molten soup 52 is uneven, and the composition is also uneven. In addition to the disadvantages described above, the traditional furnace structure has some problems. FIG. 3 is a cross-sectional view of a conventional furnace structure and a cover thereof. In Fig. 3, the upper cover has a feed opening 62. A raw material block 68, such as a magnesium alloy block, is put in through a slide plate 66; The feed opening 62 is traditionally tilted up and down, and the cover 64 08307twfl .doc / 006 is closed by IE date 92.5.7. When the raw material block 68 is to be put in, the flip cover 64 is opened. After the feeding is completed, the cover 64 is covered with the feeding opening 62 again. In the manner of the flip cover 64 in Fig. 3, opening the feed opening 62 will cause gas disturbance, which will cause loss of the protective gas. Generally, because of the high temperature of the magnesium alloy molten soup, it is extremely easy to burn. Generally, it is fluorine-containing SF0 gas, and its price is very expensive due to environmental protection. Moreover, due to environmental considerations, SF6 gas should not be wasted as much as possible. However, if the flip cover 64 is used, its opening and closing mechanism will cause great gas disturbance, resulting in the loss of protective gas. In view of this, the present invention provides a furnace structure which has the effect of uniformizing the temperature of the molten soup without increasing the length of the gooseneck. The present invention provides a furnace structure, which includes a sliding door instead of the traditional lifting mechanism 'to open and close the feed port, so as to avoid the disturbance of the protective gas and reduce the loss of the protective gas. The invention provides a furnace structure. This furnace structure is suitable for magnesium alloy die-casting, including a molten soup crucible to hold molten soup. An upper lid covers the upper part of the crucible. The upper cover is provided with a feeding opening, so that the raw material block is put into it. A sliding door closes or opens the feed opening. A group of pumps in the molten soup pot is used to drive the molten soup to circulate. A molten soup injection unit including a gooseneck at the end. Around the gooseneck, there is a heat preservation device, such as a medium-frequency heater, to maintain the melting temperature. A plurality of heaters are provided outside the soup crucible to melt the raw material pieces. In the above-mentioned furnace L structure, its pump includes a molten soup output tube, which has a -direction pointing temperature that may be higher than _1, making the off-cycle flow, 561082 08307twfl.doc / 006 correction date 92.5.7 promote uniform temperature. In the above furnace structure, the pump is located near one of the outer wall heaters. In the above furnace structure, wherein the pump is located in the molten soup crucible, the molten soup has one of the higher temperatures. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings for detailed description as follows: ^ Brief description of the drawings: FIG. 1 Fig. 2A shows the melting equipment system of traditional magnesium alloy die-casting; Fig. 2A shows a cross-sectional view of a traditional furnace structure; Fig. 2B shows a cross-sectional view corresponding to the traditional furnace structure of 2A in another direction; FIG. 3 is a cross-sectional view of a conventional furnace structure and its upper cover; FIG. 4 is a cross-sectional view of a furnace structure according to the present invention; FIG. 5A is a side cross-sectional view of a sliding door structure according to the present invention; And Figure 5B shows a top view of the structure of a sliding door according to the present invention. Description of symbols: 50 mold unit 52 molten soup 54 molten soup inlet piston 7 56 561082 revision date 92.5.7 08307twfl.doc / 006 58 gooseneck 60a, 60b, 60c heater 62 magnesium ingot inlet 64 lift cover 66 slide 68 magnesium Ingot raw material block 70 heat preservation device 72 pump 74 pump output pipe 76 slide rail 78 slide door 80 door handle embodiments Some features of the present invention include a molten crucible provided with a pump for circulating the molten soup Flow to increase the temperature of the molten soup and maintain its composition. In addition, a heat preservation device is set around the gooseneck to maintain the temperature of the molten soup in the gooseneck, so as not to cool down and affect the effect of die-casting. In addition, the feeding port of the present invention is controlled by a sliding sliding door to open and close, so as to prevent the shielding gas from being disturbed and lost. An embodiment is described below as a description of the features of the present invention. Fig. 4 shows a top sectional view of the furnace structure according to the present invention. In Figure 4, molten soup 52 is contained in a molten soup crucible. There are heaters around the molten crucible, but no heater is needed on the side with the gooseneck 58. And in the molten soup crucible, 08307twfl.doc / 006 if Zheng said its month 92.5.7 is provided with some components including the gooseneck 58 structure as shown in Figure 2A above, and the molten soup advancing mechanism 58 'at the base of the gooseneck 58. The gooseneck 58 together with the molten soup propelling mechanism 58 'constitutes a molten soup injection unit. Regarding the part of the gooseneck 58, as shown in FIG. 2A, the molten soup is guided to the mold unit 50, which is easy to cause difficulty in die casting due to cooling. In order to solve the problem that the molten soup passes through the gooseneck 58 and causes cooling, a heat preservation device 70, such as a medium-frequency heater, is provided around the gooseneck 58 and surrounds the gooseneck 58. In this way, when the molten soup passes through the gooseneck 58, it is not significantly cooled to maintain smooth die casting. In addition, the molten soup crucible may also include a pump 72. Bangpu 72 has an outlet pipe 74. The molten soup 52 is driven by the pump 72 so as to be pushed in the direction of the outlet pipe 74. In this way, the molten soup 52 is driven by the pump 72 to cause the molten soup 52 to circulate in the crucible, so that the uniformity of the temperature of the molten soup 52 can be improved. Take the heater setup in Figure 4 as an example, there are heaters on only three sides. The molten soup 52 is near the three sides, and its temperature is naturally high. On the side with gooseneck 58, the temperature will be lower because there is no heater set. Therefore, the pump 72 may be provided on the side with the heater, and the outlet pipe 74 may be directed to the side with a lower temperature. Therefore, due to the effect of the pump 72, the temperature of the molten soup 52 can be brought to a more uniform distribution. As for the position of the pump 72 and the direction of the outlet pipe 74, it can be changed according to the actual design. For example, if the volume of the furnace is small, the position of the pump 72 may be set in the middle. In addition, the gooseneck 58 of the present invention is provided with thermal insulation of the heat retainer 70, allowing the length of the gooseneck 58 to be increased, and a heater may be appropriately added to one side of the gooseneck 58. However, if you want the length of the gooseneck 58 to remain the same without adding an additional heater of 08307twfl.doc / 006 to the date of 92.5.7, the effect of the pump 72 is more obvious at this time. Next, with regard to the problem of the loss of protective gas, the present invention proposes to adopt a sliding door. In Fig. 4, the molten soup crucible has a lid, and has an opening 62, which is the input opening of the block 68. A block 68, such as a magnesium alloy ingot, is put into a crucible by a slide 66 and melted into a molten soup 52 by a heater. A sliding door 78 is used to close or open the opening 62 by a sliding mechanism. Fig. 5A shows a structural side sectional view of a sliding door according to the present invention. Fig. 5B shows a top view of the structure of the sliding door according to the present invention. As shown in FIGS. 5A-5B, the sliding door 78 is mounted on a pair of slide rails 76. There are 80 on the sliding door 78. The sliding door 78 moves along the slide rail 76 to close the opening 62. A protective gas is filled between the surface of the molten soup 52 and the cover plate. When the block 68 is to be put in, the sliding door 78 slides laterally. Due to the sliding mechanism, it is less likely to cause turbulence of the protective gas and cause loss of the protective gas. According to the above, the present invention performs efficiency analysis on the traditional furnace structure and finds that there are a number of disadvantages. In addition, in view of the disadvantages, some methods are proposed to at least solve the disadvantages proposed by the present invention. The present invention has at least a number of advantages as follows: 1. The present invention sets a pump 72 in the molten soup crucible to make the molten soup circulate to increase the temperature of the molten soup and maintain its composition. 2. In the present invention, a heat preservation device 70 is provided around the gooseneck 58 to maintain the temperature of the molten soup in the gooseneck 58 so as not to cool down and affect the effect of die-casting. 3. Also, the feeding port 62 of the present invention uses a sliding sliding door 78 to control opening and closing, so as to prevent the shielding gas from being disturbed and lost. 561082 08307twfl.doc / 006 ffd Zheng B its month 92.5.7 In summary, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Anyone skilled in this art will not Without departing from the spirit and scope of the present invention, various modifications and retouching can be made. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.
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