479012 A7 B7____ 五、發明說明（1 ) (發明之背景） (請先聞讀背面之注意事項再填寫本頁> 本發明係關於〜種螺旋槳風扇之注射塑製方法，尤其 是關於一種使用於空調機用冷凝器冷卻風扇，換氣扇，車 輛用散熱器冷卻風扇等的塑膠製螺旋槳風扇之注射塑製方 法。 習知作爲塑膠製螺旋槳風扇，眾知有表示於第3圖及 第4圖者。在此第3圖係表示上述風扇的俯視圖；第4圖 係表示沿著第3圖之iv - iv線的剖視圖；亦即表示翼形狀 〇 習知此種螺旋槳風扇係使用在空調機用冷凝器冷卻風 扇，換氣扇，車輛用散熱器冷卻風扇等，主要以塑膠材料 所製造。 又，該翼形狀係很多以薄板所製作，惟爲了提高空氣 動力性能，因此適用具有如第4圖所示之翼形剖面之扇葉 (輪葉）較有效。但是，構成如此時，作成翼形剖面而在 扇葉之一部分產生較厚部。 經濟部智慧財產局員工消費合作社印製 第5圖係表示用以注射塑製塑膠製螺旋槳風扇之習知 金屬模構造。圖中之記號1係表示具有固定側金屬模2與 活動側金屬模3的金屬模。藉上述固定側金屬模2與活動 側金屬模3，形成有塑製品的風扇之模具空間8。在上述 固定側金屬模2，設有熔融塑膠之注入口 4，及用以輕快 地保持注入控制銷5之移動的注入控制銷用推具6。在上 述固定側金屬模2及活動側金屬模3，設有朝箭號A方向 可移動之熔融塑膠的注入控制銷5。又，在上述活動側金 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -4- 479012 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（2) 屬模3，設有從金屬模推出塑製品之風扇所用的推出銷7 。推出銷7係朝箭號B方向移動。又，在上述活動型金屬 模3，注入控制銷5及推出銷7分別藉由未圖示之各驅動 源來進行位置移動之控制。 然而，較厚之翼形狀之情形。由於在翼前端爲較薄， 而在翼中央部及扇葉根部爲較厚，因此在一般之注射塑製 法中，有增加重量，發生氣孔，增加循環時間所產生的塑 製性惡化，及增加成本之問題等。 又作爲欲得到良好之較厚塑製品之方法，有發泡塑製 或吹塑等，惟因形狀精確度不好，強度，耐久性不足或較 厚部之收縮速度之相差而無法得到均勻之塑製品，使有助 於風扇旋轉振動之不均衡量惡化之問題。 (發明之槪要） 本發明之目的係在於藉由在對應於螺旋槳風扇的翼部 之較厚部之部分設置活動心型，在上述固定側金屬模與活 動側金屬模及活動心型所形成的螺旋槳風扇之模具空間之 翼部空間內注射一定量之塑膠原料之後，將上述活動心型 推向模具空間內內側，然後，將上述活動心型退回到形成 翼部空間之模具形狀之正規位置俾形成螺旋槳風扇，提供 一種即使減少較厚部與較薄部之質量差而大量製造，也可 得到均勻之塑製品，同時可較少保持有助於風扇旋轉振動 之不均衡量的螺旋槳風扇之注射塑製方法。 又，本發明之目的係在於藉由在對應於螺旋槳風扇的 I ϋ 1 ϋ ϋ ϋ 1 ϋ ϋ I I >1 ϋ 0 ϋ ϋ H 1 ϋ I I § I I ϋ ϋ ϋ H ϋ I 線丨； {請先閲讀背面之注意事項再填寫本頁) * ϋ ϋ I ϋ Mmmmw n ϋ ϋ Α1 ϋ < -·ϋ ϋ _1 1 ϋ - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -5- 479012 A7 B7 五、發明說明（3) (請先閱讀背面之注意事項再填寫本頁) 翼部之較厚部之部分設置活動心型，在上述固定側金屬模 與活動側金屬模及活動心型所形成的螺旋槳風扇之模具空 間之翼部空間內內側推出上述活動心型之後，壓送注射塑 膠原材料充滿於模具空間內，然後，將上述活動心型退回 到形成翼部空間之模具形狀之正規位置俾形成螺旋槳風扇 ，與上述同樣，提供一種可實現確保均勻之塑製品與減低 不均衡量的螺旋槳風扇之注射塑製方法。 在第一項發明中，一種螺旋槳風扇之注射塑製方法， 屬於使用固定側金屬模與活動側金屬模注射塑製塑膠製螺 旋槳風扇之方法，其特徵爲：在對應於螺旋槳風扇的翼部 之較厚部之部分設置活動心型，在上述固定側金屬模與活 動側金屬模及活動心型所形成的螺旋槳風扇之模具空間之 翼部空間內注射一定量之塑膠原料之後，將上述活動心型 推向模具空間內內側，然後，將上述活動心型退回到形成 翼部空間之模具形狀之正規位置（活動前位置）俾形成螺 旋槳風扇，因此可得到一種即使減少較厚部與較薄部之質 量差而大量製造，也可得到均勻之塑製品，同時可較少保 持有助於風扇旋轉振動之不均衡量的螺旋槳風扇。 經濟部智慧財產局員工消費合作社印製 又，在第二項發明中，一種螺旋槳風扇之注射塑製方 法，屬於使用固定側金屬模與活動側金屬模注射塑製塑膠 製螺旋槳風扇之方法，其特徵爲：在對應於螺旋槳風扇的 翼部之較厚部之部分設置活動心型，在上述固定側金屬模 與活動側金屬模及活動心型所形成的螺旋槳風扇之模具空 間之翼部空間內內側推出上述活動心型之後，壓送注射塑 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 479012 A7 B7 五、發明說明（4 ) (請先閲讀背面之注意事項再填寫本頁) 膠原材料充滿於模具空間內，將上述活動心型推向模具空 間內內側，然後，將上述模具空間退回到形成翼部空間之 模具形狀之正規位置（活動前位置）俾形成螺旋槳風扇。 因此與第一項發明同樣，可得到一種可實現確保均勻之塑 製品與減低不均衡量的螺旋槳風扇。 (發明之詳細實施形態） 第一項之發明爲，一種螺旋槳風扇之注射塑製方法， 屬於使用固定側金屬模與活動側金屬模注射塑製塑膠製螺 旋槳風扇之方法，其特徵爲：在對應於螺旋槳風扇的翼部 之較厚部之部分設置活動心型，在上述固定側金屬模與活 動側金屬模及活動心型所形成的螺旋槳風扇之模具空間之 翼部空間內注射一定量之塑膠原料之後，將上述活動心型 推向模具空間內內側，然後，將上述活動心型退回到形成 翼部空間之模具形狀之正規位置（活動前位置）俾形成螺 旋槳風扇。 經濟部智慧財產局員工消費合作社印製 第二項之發明爲，一種螺旋槳風扇之注射塑製方法， 屬於使用固定側金屬模與活動側金屬模注射塑製塑膠製螺 旋槳風扇之方法，其特徵爲：在對應於螺旋槳風扇的翼部 之較厚部之部分設置活動心型，在上述固定側金屬模與活 動側金屬模及活動心型所形成的螺旋槳風扇之模具空間之 翼部空間內內側推出上述活動心型之後，壓送注射塑膠原 材料充滿於模具空間內，然後，將上述活動心型退回到形 成翼部空間之模具形狀之正規位置（活動前位置）俾形成 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）479012 A7 B7____ V. Description of the invention (1) (Background of the invention) (Please read the precautions on the back before filling out this page> This invention is about ~ a method of injection molding of propeller fans, especially about a method used in Injection molding methods of plastic propeller fans, such as condenser cooling fans, ventilating fans for vehicle air conditioners, and radiator cooling fans for vehicles. Known as plastic propeller fans are shown in Figures 3 and 4. Here, Fig. 3 shows a top view of the above-mentioned fan; Fig. 4 shows a cross-sectional view taken along line iv-iv of Fig. 3; that is, it shows a wing shape. It is known that this propeller fan is used in an air conditioner condenser Cooling fans, ventilating fans, vehicle radiator cooling fans, etc. are mainly made of plastic materials. In addition, the shape of the wing is made of thin plates, but for improving aerodynamic performance, it is suitable to have wings as shown in Figure 4. Fan blades (blades) with a shaped cross section are more effective. However, in this case, a wing shaped section is formed to produce a thicker portion on one part of the fan blade. Member of Intellectual Property Bureau, Ministry of Economic Affairs The 5th figure printed by the Industrial and Commercial Cooperative shows the structure of a conventional metal mold used to inject plastic propeller fans made of plastic. The symbol 1 in the figure indicates a metal mold with a fixed-side metal mold 2 and a movable-side metal mold 3. The fixed-side metal mold 2 and the movable-side metal mold 3 form a mold space 8 for a fan of plastic products. The fixed-side metal mold 2 is provided with an injection port 4 of molten plastic, and is used to briskly hold the injection control pin. The pusher 6 for the injection control pin for moving 5 is provided with the injection control pin 5 of molten plastic that can be moved in the direction of arrow A on the fixed-side metal mold 2 and the movable-side metal mold 3. Also, on the movable side The paper size of the gold paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -4- 479012 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (2) Model 3, The ejection pin 7 used by the metal mold to push out the plastic product fan. The ejection pin 7 moves in the direction of the arrow B. Furthermore, in the movable metal mold 3 described above, the injection control pin 5 and the ejection pin 7 are respectively respectively Drive source to position However, in the case of a thicker wing shape, since it is thinner at the front end of the wing, and thicker at the center of the wing and the root of the fan blade, in the general injection molding method, there is increased weight and pores occur. , The deterioration of the plasticity caused by increasing the cycle time, and the problem of increasing the cost, etc. As a method to obtain a good thick plastic product, there are foam molding or blow molding, but the shape accuracy is not good, Insufficient strength or durability or the difference in shrinkage speed of thicker parts cannot obtain a uniform plastic product, which causes the problem that the uneven amount of the fan's rotational vibration is deteriorated. (Summary of the invention) The object of the present invention is to make use of A movable heart shape is provided in a portion corresponding to a thicker part of a wing portion of the propeller fan, and a certain amount of injection is made in the wing space of the mold space of the propeller fan formed by the fixed side metal mold, the movable side metal mold, and the movable heart shape. After measuring the amount of plastic material, push the movable heart shape to the inside of the mold space, and then return the movable heart shape to the regular position of the mold shape forming the wing space. Forming a propeller fan provides an injection of a propeller fan that provides a uniform plastic product even if it is mass-produced by reducing the quality difference between the thicker part and the thinner part, while maintaining an unbalanced amount of fan rotation vibration. Plastic method. In addition, the object of the present invention is to make the I ϋ 1 ϋ ϋ ϋ 1 ϋ ϋ II corresponding to the propeller fan > 1 ϋ 0 ϋ ϋ H 1 ϋ II § II ϋ ϋ ϋ H ϋ I line 丨; {Please (Please read the notes on the back before filling this page) * ϋ ϋ I ϋ Mmmmw n ϋ ϋ Α1 ϋ <-· ϋ ϋ _1 1 ϋ-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ) -5- 479012 A7 B7 V. Description of the invention (3) (Please read the precautions on the back before filling out this page) The thicker part of the wing part is set with a movable heart shape, and the fixed side metal mold and the movable side metal After the movable heart shape is pushed out from the inside of the wing space of the mold space of the propeller fan formed by the mold and the movable heart shape, the pressure-feed injection plastic raw material is filled in the mold space, and then the movable heart shape is returned to form the wing space. A regular position of the mold shape forms a propeller fan, and similar to the above, it provides an injection molding method that can ensure a uniform plastic product and reduce the unbalanced amount of the propeller fan. In the first invention, an injection molding method for a propeller fan belongs to a method for injecting a plastic propeller fan made of plastic using a fixed-side metal mold and a movable-side metal mold, and is characterized in that: The thicker part is provided with a movable heart shape. After a certain amount of plastic raw material is injected into the wing space of the mold space of the propeller fan formed by the fixed-side metal mold and the movable side metal mold and the movable heart shape, the movable heart is injected. The mold is pushed to the inside of the mold space, and then the movable heart shape is returned to the normal position (pre-movement position) of the mold shape forming the wing space. A propeller fan is formed, so that even if the thicker part and the thinner part are reduced, It can be manufactured in large quantities due to its poor quality, and it can also obtain a uniform plastic product, and at the same time, it can less maintain an unbalanced amount of propeller fan that contributes to the fan's rotational vibration. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In the second invention, an injection molding method of a propeller fan belongs to a method of injecting a plastic propeller fan using a fixed-side metal mold and a movable-side metal mold. It is characterized in that a movable heart shape is provided in a portion corresponding to a thicker part of a wing portion of the propeller fan, and in a wing space of a mold space of the propeller fan formed by the fixed side metal mold and the movable side metal mold and the movable heart shape After pushing out the above-mentioned movable heart, the size of the pressure-feed injection plastic paper is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) 479012 A7 B7 V. Description of the invention (4) (Please read the precautions on the back before Fill in this page) Collagen material is filled in the mold space, and the movable heart is pushed to the inside of the mold space. Then, the mold space is returned to the normal position (pre-movement position) of the mold shape forming the wing space. fan. Therefore, as in the first invention, a propeller fan capable of ensuring uniform plastic products and reducing an uneven amount can be obtained. (Detailed embodiment of the invention) The first invention is an injection molding method for a propeller fan, which belongs to a method for injecting a plastic propeller fan made of plastic using a fixed-side metal mold and a movable-side metal mold, and is characterized in that: A movable heart shape is set on the thicker part of the wing part of the propeller fan. A certain amount of plastic is injected into the wing space of the mold space of the propeller fan formed by the fixed side metal mold, the movable side metal mold, and the movable heart shape. After the raw materials, the movable heart shape is pushed to the inside of the mold space, and then the movable heart shape is returned to the regular position (pre-movement position) of the mold shape forming the wing space to form a propeller fan. The second invention printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is an injection molding method of propeller fans, which belongs to the method of injecting plastic propeller fans using a fixed-side metal mold and a movable-side metal mold. : Set a movable heart shape in the part corresponding to the thicker part of the wing part of the propeller fan, and push out inside the wing space of the mold space of the propeller fan formed by the fixed side metal mold, the movable side metal mold, and the movable heart shape. After the above-mentioned movable heart shape, the pressure feed injection plastic material is filled in the mold space, and then the movable heart shape is returned to the normal position (pre-movement position) of the mold shape forming the wing space. (CNS) A4 size (210 X 297 mm)
經濟部智慧財產局員工消費合作社印製 479012 五、發明說明（5 ) 螺旋槳風扇。 以下，更詳述本發明之注射塑製方法。 在本發明中，作爲上述塑膠原料，例如有包含長纖維 之強化塑膠材料？丨，或是在通常之塑膠材料混入發泡劑 的塑膠材料P 2，或是在長纖維強化塑膠混入發泡劑的塑 膠材料P 3。在此，材料p丨時係利用依長纖維之內部復 原力，材料P 2時係利用發泡力；材料p 3時係利用復原 力與發泡力之雙方，由此在塑製品內部能形成膨脹組織。 又，作爲材料p i，含於熱可塑性樹脂顆粒中之纖維含有 量爲10至8 0重量％，該顆粒全長爲2至1〇〇 mm， 而含於該顆粒中的纖維爲與顆粒全長度實質上相等長度， 而包含與顆粒之長度方向（全長方向）互相平行地排列之 狀態之顆粒的材料。 在本發明中，在上述螺旋槳風扇之翼部前端部及翼部 扇葉根部附近並未緊靠活動心型，而僅在翼部中央之較厚 部緊靠活動心型來進行塑製較理想。在此，在翼前端部及 翼根部附近並未緊靠活動心型乃爲了減少此等部位之內部 膨脹，而僅在翼部中心之較厚部緊靠活動心型乃爲了提高 這些部位之內部膨脹。 (發明之實施例） 以下，說明本發明之實施例的螺旋槳風扇之塑製方法 〇 首先，使用第1圖及第2圖，說明注射塑製塑膠製螺 — — — — — — — — — — — I — — — — — — — II t — — — — — — — — I — — — — — — — — — — — — — — — (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -8 - 479012 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（6 ) 旋槳風扇所用的本發明之金屬模構造。第1圖係表示上述 風扇的整體圖；而第2圖係表示第1圖之Π — Π箭視圖。 圖中之記號1 1係表示具有固定側金屬模1 2與活動 側金屬模1 3及活動心型1 4的金屬模。在此，活動心型 1 4係設在對應於螺旋槳風扇之翼部3 1 a之較厚部 3 1 b的部分，朝箭號A方向移動。藉由上述固定側金屬 模1 2與活動側金屬模1 3及活動心型1 4，形成塑製品 的風扇之模具空間1 5。在上述固定側金屬模1 1設有熔 融塑膠之注入口 1 6，及用以輕快地保持下述之注入控制 銷之移動的注入控制銷用推具1 7。 在上述固定側金屬模1 2及活動心型1 4，設有朝箭 號B方向可移動之熔融塑膠的注入控制銷1 8。又，在上 述活動側金屬模1 3，設有從金屬模推出塑製品之風扇所 用的推出銷1 9。該推出銷1 9係朝箭號C方向移動。又 ，上述活動型金屬模1 3，活動心型1 4，注入控制銷 1 8及推出銷1 9係分別藉由未圖示之各驅動源來進行位 置移動之控制。 又，上述活動心型1 4係配置成接觸於表示於第2圖 的風扇之模具空間1 5的翼部3 1 a之較厚部3 1 b位置 而構成模具空間1 5之外廓之一部分，且形成作爲未接觸 於翼部3 1 a周邊之較薄部3 1 c及需強度之翼部扇葉根 部附近3 1 d的配置之形狀。 以下，說明使用上述之構成的金屬模塑製塑膠製螺旋 槳風扇的方法。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -9- i^i ϋ ϋ —ϋ ·1 ϋ ϋ mmme n ϋ ·1 alam * ·ϋ ϋ I ϋ I I ϋ i_i aomr ϋ 1· I ·ϋ I ·ϋ ι 1 ϋ ϋ _· 1 I— I —a— n ϋ Ju a^i UK I l n n ϋ i (請先閱讀背面之注意事項再填寫本頁) 479012 A7 B7 五、發明說明（7) (實施例1 ) (請先閱讀背面之注意事項再填寫本頁) (1 )首先，驅動注入控制銷1 8使之開放，將熔融 塑膠材料從注入口 1 6注入在以固定側金屬模1 2與活動 側金屬模1 3及活動心型1 4所形成的模具空間1 5內。 在此，作爲熔融塑膠，使用包含具有3 m m以上之長度的 玻璃纖維等之長纖維強化塑膠，亦即，使用日本出光石油 化學公司製之長纖維強化G E P P〔商品名稱：莫斯特龍 L ( G F 3 0 % )〕。 (2 )然後，當上述熔融塑膠材料大約充滿風扇之模 具空間1 5內的時候，關閉注入控制銷1 8，朝翼部 3 1 a側推出活動心型1 4，並壓縮模具空間1 5內之塑 膠材料並壓送至模具空間1 5內之周邊部。在此，塑製機 係使用日本三菱重工業公司製之注射塑製機（鎖緊模具之 力量：4 5 0噸），以塑製溫度：2 5 0 °C，模具溫度： 6 0 °C，注射時間：5秒鐘，而在對於模穴之注射塡充率 9 0 %施以塡充，完成注射之後，前進活動心型，俾進行 壓縮塡充。 經濟部智慧財產局員工消費合作社印製 (3 )之後，一定時間後，將活動心型1 4退回到形 成翼部3 1 a形狀的原來之位置，藉包含於包含於塑膠材 料的長纖維之回彈力而在翼內部產生內部膨脹，一直到塑 製品之外廓沿著模具空間1 5之形狀之翼形狀爲止，將活 動心型1 4保持在活動心型1 4。 (4 )然後，隨著依經過被注射在模具空間1 5內之 -10- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公楚） 479012 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（8 ) 膠材料之時間的溫度降低，在依膨脹或發泡的翼形狀之 變化被固定之時刻，從固定側金屬模1 2分離活動側金屬 模1 3及活動心型1 4，驅動推出銷1 9從金屬模1 1取 出塑製品之風扇。塑製週期爲7 0秒鐘。 在上述實施例1中，首先，將熔融塑膠材料從注入口 1 6注入在模具空間1 5內，該塑膠材料幾乎充滿模具空 間1 5內之時候，關閉注入控制銷1 8俾將活動心型1 4 推向翼部3 1 a側，壓縮模具空間1 5內之塑膠材料並壓 送至模具空間1 5內之周邊部，然後，經一定時間後，將 活動心型1 4退回到形成翼部3 1 a形狀的原來位置，藉 包含於塑膠材料的長纖維之回彈力在翼內部施以內部膨脹 ，一直到塑製品之外廓沿著模具空間1 5之形狀形成翼形 狀爲止將活動心型1 4保持在所定位置，又在依膨脹或發 泡的翼形狀之變化被固定之時刻，從固定側金屬模1 2分 離活動側金屬模1 3及活動心型1 4，驅動推出銷1 9從 金屬模1 1取出塑製品之風扇。 因此，在風扇之翼部3 1 a中在周邊之較薄部3 1 c 及扇葉根部3 1 d之強度保持部成爲保有塑膠原料緻密地 保持之強度，而在中央部之較厚部3 1 b藉由內部膨脹或 發泡可較少塡充塑膠原料。結果，較厚部與較薄部之質量 差變少，大量製作也可得到均勻之塑製品，而可較少保持 有助於風扇旋轉振動的不均衡量。 事貝上，如貫施例1所得到之成品（風扇），係成品 尺寸：400mm，成品重量：450g，對於金屬模形 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公髮）Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479012 V. Description of Invention (5) Propeller fan. Hereinafter, the injection molding method of the present invention will be described in more detail. In the present invention, as the plastic material, for example, is a reinforced plastic material containing long fibers?丨, or plastic material P 2 mixed with a foaming agent in a common plastic material, or plastic material P 3 mixed with a foaming agent in a long fiber reinforced plastic. Here, the material p 丨 uses the internal restoring force of the long fiber, the material P 2 uses the foaming force; the material p 3 uses both the restoring force and the foaming force, so that it can be formed inside the plastic product. Swell tissue. Also, as the material pi, the content of the fibers contained in the thermoplastic resin particles is 10 to 80% by weight, the total length of the particles is 2 to 100 mm, and the fibers contained in the particles are substantially the same as the full length of the particles. It is a material that contains particles in a state of equal length and arranged parallel to the length direction (full-length direction) of the particles. In the present invention, it is preferable that the front end portion of the wing portion of the propeller fan and the root portion of the wing portion blade are not close to the movable heart shape, but only the thicker part in the center of the wing portion is close to the movable heart shape for plastic molding. . Here, the movable heart shape is not close to the front end of the wing and near the root of the wing in order to reduce the internal expansion of these parts, but the thicker part of the wing center is closer to the movable heart to improve the interior of these parts. Swell. (Embodiment of the Invention) Hereinafter, a method for plasticizing a propeller fan according to an embodiment of the present invention will be described. First, using plastic figures 1 and 2 to explain the injection-molded plastic screw — — — — — — — — — — — I — — — — — — — II t — — — — — — — — I — — — — — — — — — — — — — (Please read the notes on the back before filling out this page) This paper Standards apply to China National Standard (CNS) A4 specifications (210 X 297 mm) -8-479012 Printed by A7 B7, Consumer Cooperatives of Intellectual Property Bureau, Ministry of Economic Affairs 5. Description of the invention (6) The metal mold of the present invention for propeller fans structure. Fig. 1 is an overall view of the above-mentioned fan; and Fig. 2 is a view of arrow Π-Π of Fig. 1. Reference numeral 11 in the figure indicates a metal mold having a fixed-side metal mold 12, a movable-side metal mold 13, and a movable heart-shaped mold 14. Here, the movable heart shape 1 4 is a portion provided in the thick portion 3 1 b corresponding to the wing portion 3 1 a of the propeller fan, and moves in the direction of the arrow A. With the above-mentioned fixed-side metal mold 12, the movable-side metal mold 13, and the movable heart shape 14, a mold space 15 for a fan of a plastic product is formed. The above-mentioned fixed-side metal mold 11 is provided with an injection port 16 for melting plastic, and an injection control pin pusher 17 for lightly maintaining the movement of the injection control pin described below. The fixed-side metal mold 12 and the movable heart shape 14 are provided with injection control pins 18 of molten plastic movable in the direction of arrow B. The movable-side metal mold 13 is provided with a push-out pin 19 for a fan that pushes the plastic product out of the metal mold. The ejection pin 19 is moved in the direction of the arrow C. In addition, the above-mentioned movable metal mold 13, movable heart type 14, injection control pin 18, and ejection pin 19 respectively control position movement by driving sources (not shown). The movable heart shape 14 is arranged to contact the thicker portion 3 1 b of the wing portion 3 1 a of the mold space 15 of the fan shown in FIG. 2 to form a part of the outer space of the mold space 15. And it is formed in a shape that is a thin portion 3 1 c that is not in contact with the periphery of the wing portion 3 1 a and a root portion of the blade portion of the wing portion that requires strength 3 1 d. Hereinafter, a method of using a metal-molded plastic propeller fan having the above-mentioned structure will be described. This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -9- i ^ i ϋ ϋ —ϋ · 1 ϋ ϋ mmme n ϋ · 1 alam * · ϋ ϋ I ϋ II ϋ i_i aomr ϋ 1 · I · ϋ I · ϋ ι 1 ϋ ϋ _ · 1 I— I —a— n ϋ Ju a ^ i UK I lnn ϋ i (Please read the notes on the back before filling this page) 479012 A7 B7 V. Description of the invention (7) (Example 1) (Please read the precautions on the back before filling out this page) (1) First, drive the injection control pin 18 to open it, and inject the molten plastic material from the injection port 16 into the In the mold space 15 formed by the fixed-side metal mold 12, the movable-side metal mold 13, and the movable heart shape 14. Here, as the molten plastic, a long-fiber-reinforced plastic including glass fibers having a length of 3 mm or more is used, that is, a long-fiber-reinforced GEPP [trade name: Mostron L ( GF 3 0%)]. (2) Then, when the molten plastic material fills approximately the mold space 15 of the fan, the injection control pin 18 is closed, the movable heart shape 14 is pushed toward the wing portion 3 1 a side, and the mold space 15 is compressed. The plastic material is pressure-fed to the peripheral portion in the mold space 15. Here, the injection molding machine is an injection molding machine (power of clamping mold: 450 tons) made by Mitsubishi Heavy Industries, Japan, with a molding temperature: 250 ° C, a mold temperature: 60 ° C, Injection time: 5 seconds. After the injection rate of 90% for the injection of the cavity is administered with filling, after the injection is completed, the heart shape is moved forward and compression filling is performed. After printing (3) by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, after a certain period of time, the movable heart shape 14 is returned to the original position forming the shape of the wings 3 1 a, and is included in the long fibers included in the plastic material. Resilience causes internal expansion inside the wing until the outer shape of the plastic product follows the shape of the wing of the mold space 15 and the movable heart shape 14 is maintained at the movable heart shape 14. (4) Then, as the injection is injected into the mold space 1-15 -10- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 Gongchu) 479012 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs System A7 B7 V. Description of the invention (8) The temperature of the rubber material is reduced in temperature. At the time when the shape of the wing expanded or expanded is fixed, the movable metal mold 12 is separated from the fixed metal mold 13 and the movable Heart-shaped 1 4, drive the ejection pin 19 to take out the plastic fan from the metal mold 11. The molding cycle is 70 seconds. In the above-mentioned Embodiment 1, first, the molten plastic material is injected into the mold space 15 from the injection port 16 and when the plastic material almost fills the mold space 15, the injection control pin 18 is closed to move the heart shape. 1 4 Push to the side of the wing part 3 1 a, compress the plastic material in the mold space 15 and feed it to the peripheral part in the mold space 15, and then, after a certain period of time, return the movable heart shape 1 4 to form the wing. The original position of the shape of the part 3 1 a is internally expanded inside the wing by the resilience of the long fibers included in the plastic material, until the outer contour of the plastic product forms the wing shape along the shape of the mold space 15 The mold 14 is held in a predetermined position, and at the time when the shape of the expanded or foamed wing is fixed, the movable mold 12 and the movable mold 14 are separated from the fixed mold 12 and the push pin 1 is driven. 9 Take out the plastic fan from the metal mold 1 1. Therefore, the strength maintaining portion of the thinner portion 3 1 c of the fan wing portion 3 1 a and the root portion 3 1 d of the fan becomes the strength densely held by the plastic material, and the thick portion 3 of the central portion 3 1 b Less filling of plastic materials by internal expansion or foaming. As a result, the difference in quality between the thicker portion and the thinner portion becomes smaller, and a large number of productions can also obtain a uniform plastic product, while maintaining an unbalanced amount that contributes to the fan's rotational vibration. In the case, the finished product (fan) obtained as in Example 1 is the finished product size: 400mm and the finished product weight: 450g. For the metal mold, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297) )
Ml aiB MB MB a·· I · .^1 1 ϋ ϋ ϋ Bi n I am· mb an at 雞mb· μ* a· am mm mb < mm mb μβ —1 aMfJI mm I mm (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 479012 A7 B7__ 五、發明說明（9) 狀，所得到之成品（風扇）的變形量最大爲1 m m而得到 尺寸精確度極高之成品。又，內部空隙係藉長纖維之復原 力（回彈）所產生者。 又，作爲比較例，使用實施例1之設備，使用短纖維 G F P P ( G F 3 0 % )來實施注射塑製。但是，樹脂溫 度：2 3 0 t：，金屬模溫度：4 0 t：，注射時間：5秒鐘 ，保壓時間：3 0秒鐘，冷卻時間：2 2 0秒鐘，塑製週 期爲2 8 0秒鐘。結果，成品重量爲6 0 0 g，對於金屬 模形狀，所得到的成品（風扇）之變形量最大爲1 0 m m ，尺寸精確度較低，必須作二次製程之矯正。 (實施例2 ) 如上述實施例1之上述（2 )所述地，將活動心型 1 4推向翼部3 1 a側之後，將塑膠材料壓送至風扇之模 具空間1 5內使之充滿，關閉注入控制銷1 8。然後經過 與實施例1之上述（3 )， （ 4 )同樣之製程，俾塑製塑 膠製螺旋槳風扇。 依照實施例2，得到與上述實施例1同樣之效果。 又，在上述實施例中，作爲塑膠材料，說明使用含有 具3 m m以上長度之玻璃纖維等的長纖維強化塑膠之情形 ，惟並不被限定於此者，在通常之塑膠材料混入發泡劑之 塑膠材料，或是在長纖維強化塑膠混入發泡劑之塑膠材料 也可以。 又，在上述實施例係藉膨脹可產生內部空隙，惟在該 (請先閱讀背面之注意事項再填寫本頁)Ml aiB MB MB a ···· ^ 1 1 ϋ ϋ ϋ Bi n I am · mb an at chicken mb · μ * a · am mm mb < mm mb μβ —1 aMfJI mm I mm (Please read the back first Please fill in this page again) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479012 A7 B7__ 5. Description of the invention (9), the maximum deformation of the finished product (fan) is 1 mm, and the dimensional accuracy is extremely high. High finished product. The internal voids are generated by the resilience (rebound) of long fibers. As a comparative example, injection molding was performed using the equipment of Example 1 using short fibers G F P P (G F 30%). However, the resin temperature: 2 3 0 t :, the mold temperature: 40 t :, the injection time: 5 seconds, the dwell time: 30 seconds, the cooling time: 220 seconds, and the molding cycle is 2 80 seconds. As a result, the weight of the finished product is 600 g. For the shape of the mold, the maximum deformation of the finished product (fan) is 10 mm, the dimensional accuracy is low, and the secondary process must be corrected. (Embodiment 2) As described in the above (2) of Embodiment 1, after the movable heart shape 14 is pushed to the side of the wing portion 3 1 a, the plastic material is pressed into the mold space 15 of the fan to make it Full, close the injection control pin 1 8. Then, the same process as (3) and (4) above in Example 1 was followed, and a plastic propeller fan was made. According to the second embodiment, the same effects as those of the first embodiment can be obtained. Moreover, in the above-mentioned embodiment, as a plastic material, the case of using a long-fiber reinforced plastic containing glass fiber with a length of 3 mm or more is described, but it is not limited to this, and a foaming agent is mixed into a common plastic material Plastic materials, or plastic materials mixed with foaming agent in long fiber reinforced plastics are also acceptable. Moreover, in the above embodiment, internal voids can be generated by expansion, but in this case (please read the precautions on the back before filling this page)
本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -12- 經濟部智慧財產局員工消費合作社印製 479012 A7 B7 五、發明說明（1Q) 內部空隙爲了形狀保持而注入氣體也可以。又，在上述實 施例中，說明將翼部施以膨脹之情形，惟並不被限定於此 者，視需要，相當於風扇之中心部的突面部緊靠活動心型 使之心型退回後產生膨脹也可以。在此「心型退回」係指 緊靠活動心型，注射塑膠材料之後，退回到正規位置施行 塑製之方法者。 (圖式之簡單說明） 第1圖係表示用以注射塑製本發明之塑膠製螺旋槳風 扇之金屬模構造的說明圖。 第2圖係表示第1圖之Π-Π箭視圖。 第3圖係表示塑膠製螺旋槳風扇的俯視圖。 第4圖係表示沿著第3圖之IV — IV線的剖視圖。 第5圖係表示用以注射塑製塑膠製螺旋槳風扇之習知 之金屬模構造的說明圖。 (記號之說明） (請先閱讀背面之注意事項再填寫本頁)This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -12- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479012 A7 B7 V. Description of the invention (1Q) The internal space is filled with gas for shape retention Yes. Also, in the above-mentioned embodiment, the case where the wings are expanded is described, but it is not limited to this. If necessary, it is equivalent to the protruding part of the central part of the fan abutting the movable heart shape to make the heart shape return. Swelling is also possible. "Heart-shaped return" here refers to the person who is close to the movable heart-shaped, and after injection of plastic material, returns to the regular position to perform the plastic method. (Brief description of the drawings) Fig. 1 is an explanatory diagram showing the structure of a metal mold for injection-molding the plastic propeller fan of the present invention. Fig. 2 is a view of arrow Π-Π of Fig. 1. Fig. 3 is a plan view showing a plastic propeller fan. Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3; Fig. 5 is an explanatory view showing a conventional metal mold structure for injecting a plastic propeller fan made of plastic. (Description of Symbols) (Please read the notes on the back before filling in this page)
1 , 1 1 金屬模 2 , 1 2 固定側金屬模 3 , 1 3 活動側金屬模 4， 1 6 注入口 5， 1 8 注入控制銷 6， 1 7 注入控制銷用推具 7， 1 9 推出銷 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -13- 479012 A7 _B7 五、發明說明（11 ) 14 活動心型 15 模具空間 3 1a 翼部 31b 較厚部 . 31c 較薄部 3 1 d 扇葉根部 • ·ϋ ϋ n —ϋ ϋ 1 n ϋ ·ϋ 11 «ϋ I ϋ ϋ _ I n n ϋ · 1 i§ n I— mmt emmmm I I I · (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -14-1, 1 1 metal mold 2, 1 2 fixed metal mold 3, 1 3 movable metal mold 4, 1 6 injection inlet 5, 1 8 injection control pin 6, 1 7 pusher for injection control pin 7, 1 9 push out The paper size for this paper applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -13- 479012 A7 _B7 V. Description of the invention (11) 14 Movable heart shape 15 Mold space 3 1a Wing 31b Thicker part 31c Thinner part 3 1 d Fan blade root • · ϋ ϋ n —ϋ ϋ 1 n ϋ · ϋ 11 «ϋ I ϋ ϋ _ I nn ϋ · 1 i§ n I— mmt emmmm III · (Please read the note on the back first Please fill in this page for further information) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) -14-