TWI648143B - Method for forming resin molded article containing reinforced fiber - Google Patents
Method for forming resin molded article containing reinforced fiber Download PDFInfo
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- TWI648143B TWI648143B TW107122043A TW107122043A TWI648143B TW I648143 B TWI648143 B TW I648143B TW 107122043 A TW107122043 A TW 107122043A TW 107122043 A TW107122043 A TW 107122043A TW I648143 B TWI648143 B TW I648143B
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Abstract
本發明提供一種將強化纖維適當地分配混合至樹脂材料中而可成形品質良好之含強化纖維之樹脂成形品之方法。 於螺旋21之螺旋刮板部25之計量區C之前方前端、與分配混合防逆流閥27之防逆流閥部51之間，設置有熔融促進部26。將加熱筒20之設定為最高溫度之範圍設定為高出樹脂材料之熔點20～140℃。於射出裝置2之加熱筒20內，使螺旋21以40～120轉/分鐘旋轉，自螺旋21之螺旋刮板部25將成形材料輸送至熔融促進部26而使樹脂材料充分地熔融，其後將成形材料輸送至分配混合防逆流閥27而使樹脂材料之強化纖維分配混合，進而輸送至加熱筒20之前方而貯存特定量之成形材料。此時螺旋21之背壓設定為0～5 MPa。The present invention provides a method of forming a resin molded article containing a reinforcing fiber having a good quality by appropriately distributing and mixing the reinforcing fibers into a resin material. A melting promotion portion 26 is provided between the front end of the metering region C of the spiral squeegee portion 25 of the spiral 21 and the backflow prevention valve portion 51 to which the backflow prevention valve 27 is distributed. The range in which the heating cylinder 20 is set to the highest temperature is set to be 20 to 140 ° C higher than the melting point of the resin material. In the heating cylinder 20 of the injection device 2, the spiral 21 is rotated at 40 to 120 rpm, and the molding material is conveyed from the spiral squeegee portion 25 of the spiral 21 to the melting promotion portion 26 to sufficiently melt the resin material. The molding material is conveyed to the distribution mixing backflow prevention valve 27 to distribute and mix the reinforcing fibers of the resin material, and further conveyed to the front of the heating cylinder 20 to store a specific amount of the molding material. At this time, the back pressure of the screw 21 is set to 0 to 5 MPa.
Description
本發明係關於一種含強化纖維之樹脂成形品之成形方法，尤其係關於使用具備加熱筒、嵌插於該加熱筒內之螺旋、及設置於該螺旋之前端之分配混合防逆流閥之射出裝置，將包含熱塑性樹脂材料與強化纖維之成形材料投入至上述加熱筒內，成形含強化纖維之樹脂成形品之方法。The present invention relates to a method for forming a resin molded article containing a reinforcing fiber, and more particularly to an injection device using a heating cylinder, a screw embedded in the heating cylinder, and a distributed mixing anti-backflow valve disposed at a front end of the spiral A method of forming a resin molded article containing a reinforcing fiber by introducing a molding material containing a thermoplastic resin material and a reinforcing fiber into the heating cylinder.
作為與用以成形樹脂成形品之射出成形相關聯之先前之技術，已知例如專利文獻1、2。於專利文獻1中，揭示有於前端設置有混合部與防逆流閥之射出成形用單軸塑化螺旋。而且，於專利文獻1中，記載有超出設置於螺旋之計量部之偏心螺旋刮板A、B、C之樹脂受到局部剪切，促進未熔融樹脂之熔融(段落[0019])。As a prior art related to injection molding for molding a resin molded article, for example, Patent Documents 1 and 2 are known. Patent Document 1 discloses a uniaxial plasticizing spiral for injection molding in which a mixing portion and a backflow prevention valve are provided at the tip end. Further, in Patent Document 1, it is described that the resin exceeding the eccentric spiral squeegees A, B, and C provided in the measuring portion of the spiral is locally sheared, and the melting of the unmelted resin is promoted (paragraph [0019]).
另一方面，於專利文獻2中，揭示有關於使用螺旋式射出機將含強化纖維之熱塑性樹脂組合物射出至成形模具之方法、及實施該方法之射出裝置之發明。而且，於專利文獻2中，記載有作為螺旋式射出機內之螺旋採用全螺旋刮板螺旋，且於前端安裝有具備止逆環機構之混料頭(段落[0022])。 [先前技術文獻] [專利文獻]On the other hand, Patent Document 2 discloses a method of ejecting a thermoplastic resin composition containing a reinforcing fiber to a molding die using a spiral type extruder, and an invention of an injection device for carrying out the method. Further, Patent Document 2 describes that a full spiral blade spiral is used as the spiral in the spiral type injection machine, and a mixing head having a check ring mechanism is attached to the tip end (paragraph [0022]). [Prior Technical Literature] [Patent Literature]
[專利文獻1]日本專利特開平7-256717號公報 [專利文獻2]日本專利特開平9-150436號公報[Patent Document 1] Japanese Patent Laid-Open No. Hei 7-256717 (Patent Document 2) Japanese Patent Laid-Open No. Hei 9-150436
[發明所欲解決之問題][The problem that the invention wants to solve]
於上述先前技術中之專利文獻1所記載之技術中，並未記載關於對樹脂材料使用強化纖維、及使上述樹脂與纖維分配混合。因此，專利文獻1中並未揭示有關於成形含強化纖維之樹脂成形品時怎樣的成形條件為最佳。In the technique described in Patent Document 1 of the above prior art, it is not described that the reinforcing fibers are used for the resin material, and the resin and the fibers are distributed and mixed. Therefore, Patent Document 1 does not disclose how the molding conditions are best when molding a resin molded article containing a reinforcing fiber.
又，於專利文獻2所記載之技術中，將自熔融擠出機擠出之熔融樹脂與利用粗紗切割機剪斷後之強化纖維一起投入至螺旋式射出機，藉由螺旋朝前端移送。此時，螺旋並不足以使熔融樹脂與強化纖維充分混合，又，樹脂材料於能適當地分配強化纖維之熔融狀態下並不輸送至混料頭，其結果存在如下問題，即，有可能無法充分地開纖，進而有可能使流動阻力較大之強化纖維由混料頭之止逆環機構牽扯而產生堵塞等。Further, in the technique described in Patent Document 2, the molten resin extruded from the melt extruder is introduced into a spiral type extruder together with the reinforcing fibers cut by the roving cutter, and is transferred to the tip end by the spiral. At this time, the spiral is not sufficient to sufficiently mix the molten resin with the reinforcing fibers, and the resin material is not transported to the mixing head in a molten state in which the reinforcing fibers can be appropriately distributed. As a result, there is a problem that it may not be possible. The fiber is sufficiently opened, and it is possible to cause the reinforcing fiber having a large flow resistance to be caught by the back ring mechanism of the mixing head to cause clogging or the like.
本發明係鑒於上述問題而完成，其目的在於提供一種將強化纖維適當地分配混合至樹脂材料中而可成形強度等品質良好之含強化纖維之樹脂成形品之方法。 [解決問題之技術手段]The present invention has been made in view of the above-described problems, and an object of the invention is to provide a method of forming a resin molded article containing a reinforcing fiber having a good quality such as a molded strength by appropriately distributing and mixing the reinforcing fibers into a resin material. [Technical means to solve the problem]
為達成上述目的，技術方案1之含強化纖維之樹脂成形品之成形方法之發明使用具備：加熱筒；嵌插於該加熱筒內之螺旋；及分配混合防逆流閥，其設置於該螺旋之前端側，將熔融之樹脂材料與強化纖維混合而使強化纖維均勻地分配至樹脂材料，又，於加熱筒之前方貯存成形材料時使成形材料朝加熱筒之前方流動，且於射出時不會使成形材料朝加熱筒之後方逆流；之射出裝置，將包含上述熱塑性樹脂材料與強化纖維之成形材料投入至上述加熱筒內，成形含強化纖維之樹脂成形品，該成形方法之特徵在於：於上述螺旋之螺旋刮板部與上述分配混合防逆流閥之間，設置有熔融促進部，其構成為直徑較上述螺旋之上述螺旋刮板部之軸部之直徑大，促進上述樹脂材料之熔融，使上述螺旋繞著軸旋轉，加熱並混練上述成形材料，為了利用上述分配混合防逆流閥將上述強化纖維適當地分配混合至上述樹脂材料中，藉由上述熔融促進部使上述成形材料靠近上述加熱筒之內孔而傳導來自上述加熱筒之熱，充分地加熱上述樹脂材料使其熔融至充分之程度，將上述樹脂材料已充分熔融之狀態之上述成形材料輸送至上述分配混合防逆流閥，於上述分配混合防逆流閥中促進上述成形材料之上述強化纖維之分配，且將促進分配後之成形材料貯存於上述加熱筒之前方，使上述螺旋沿軸向前進，將貯存於上述加熱筒之前方之上述成形材料射出至成形模具。 技術方案1之發明中，於螺旋之螺旋刮板部與分配混合防逆流閥之間設置有熔融促進部。該熔融促進部構成為直徑較螺旋之上述螺旋刮板部之軸部之直徑大。經於螺旋之螺旋刮板部加熱混練之成形材料於熔融促進部中，靠近加熱筒之內孔，使來自加熱筒之熱傳導，為了利用分配混合防逆流閥將強化纖維適當地分配混合至樹脂材料中而充分地加熱熔融至充分之程度。於該狀態下，將成形材料輸送至分配混合防逆流閥。因此，於分配混合防逆流閥中，促進強化纖維相對於充分熔融之狀態之樹脂材料之分配，其結果使強化纖維均勻地分配混合。又，成形材料之樹脂材料充分地熔融而具有流動性，故不會出現強化纖維掛在分配混合防逆流閥上而堵塞之情形。其後，將適當地分配混合有強化纖維之成形材料貯存於加熱筒之前方，使螺旋沿軸向前進而射出至成形模具後，成形強度等品質良好之含強化纖維之樹脂成形品。In order to achieve the above object, the invention of the method for forming a resin molded article containing a reinforcing fiber according to the first aspect of the invention includes: a heating cylinder; a spiral inserted in the heating cylinder; and a distribution anti-backflow valve which is disposed in the spiral On the front end side, the molten resin material is mixed with the reinforcing fibers to uniformly distribute the reinforcing fibers to the resin material, and when the molding material is stored before the heating cylinder, the molding material flows toward the front of the heating cylinder, and does not occur when it is ejected. An injection device that reverses the flow of the molding material toward the heating cylinder; the injection device including the thermoplastic resin material and the reinforcing fiber is placed in the heating cylinder to form a resin molded article containing the reinforcing fiber, and the molding method is characterized in that Between the spiral spiral squeegee portion and the distribution-mixed anti-backflow valve, a melting-promoting portion having a diameter larger than a diameter of a shaft portion of the spiral squeegee portion of the spiral to promote melting of the resin material is provided. Rotating the above-mentioned spiral around the shaft, heating and kneading the above-mentioned forming material, in order to mix the anti-backflow valve with the above-mentioned distribution The reinforcing fiber is appropriately dispensed and mixed into the resin material, and the melting-promoting portion causes the molding material to pass the heat from the heating cylinder to the inner hole of the heating cylinder, and sufficiently heats the resin material to be melted to To a sufficient extent, the molding material in a state in which the resin material is sufficiently melted is transferred to the distribution and mixing backflow prevention valve, and the distribution of the reinforcing fibers of the molding material is promoted in the distribution and mixing backflow prevention valve, and the distribution of the reinforcing fibers is promoted. The molding material is stored in front of the heating cylinder, the spiral is advanced in the axial direction, and the molding material stored in front of the heating cylinder is injected to the molding die. According to the invention of claim 1, the melt accelerating portion is provided between the spiral spiral squeegee portion and the distribution mixing backflow prevention valve. The melting promoting portion is configured to have a diameter larger than a diameter of a shaft portion of the spiral squeegee portion having a diameter. The molding material which is heated and kneaded by the spiral spiral scraper portion is heated in the melting promotion portion, close to the inner hole of the heating cylinder, and conducts heat from the heating cylinder, and the reinforcing fiber is appropriately dispensed and mixed to the resin material by using the distribution mixing backflow prevention valve. Medium and fully heated and melted to a sufficient extent. In this state, the shaped material is delivered to the distribution mixing backflow prevention valve. Therefore, in the distribution-mixed backflow prevention valve, the distribution of the reinforcing fiber to the resin material in a state of being sufficiently melted is promoted, and as a result, the reinforcing fibers are uniformly distributed and mixed. Further, since the resin material of the molding material is sufficiently melted and has fluidity, the reinforcing fibers are not caught on the distribution-mixed backflow prevention valve and are clogged. Then, a resin molded article containing a reinforcing fiber having a good quality such as a molding strength, which is obtained by appropriately distributing the molding material in which the reinforcing fibers are mixed, before the heating cylinder, and advancing the spiral in the axial direction to the molding die.
為達成上述目的，技術方案2之含強化纖維之樹脂成形品之成形方法之發明使用具備：加熱筒；嵌插於該加熱筒內之螺旋；及分配混合防逆流閥，其設置於該螺旋之前端側，將熔融之樹脂材料與強化纖維混合而使強化纖維均勻地分配至樹脂材料，又，於加熱筒之前方貯存成形材料時使成形材料朝加熱筒之前方流動，且於射出時不會使成形材料朝加熱筒之後方逆流；之射出裝置，將包含上述熱塑性樹脂材料與強化纖維之成形材料投入至上述加熱筒內，成形含強化纖維之樹脂成形品，該成形方法之特徵在於：於上述螺旋之螺旋刮板部與上述分配混合防逆流閥之間，設置有熔融促進部，其具有複數個突起，藉由將上述成形材料之強化纖維分配混合至樹脂材料中而促進上述樹脂材料之熔融，使上述螺旋繞著軸旋轉，加熱並混練上述成形材料，為了利用上述分配混合防逆流閥將上述強化纖維適當地分配混合至上述樹脂材料中，藉由上述熔融促進部使上述成形材料靠近上述加熱筒之內孔而傳導來自上述加熱筒之熱，充分地加熱上述樹脂材料使其熔融至充分之程度，將上述樹脂材料已充分熔融之狀態之上述成形材料輸送至上述分配混合防逆流閥，於上述分配混合防逆流閥中促進上述成形材料之上述強化纖維之分配，且將促進分配後之成形材料貯存於上述加熱筒之前方，使上述螺旋沿軸向前進，將貯存於上述加熱筒之前方之上述成形材料射出至成形模具。 技術方案2之發明中，於螺旋之螺旋刮板部與分配混合防逆流閥之間設置有熔融促進部。該熔融促進部係具有複數個突起，且將成形材料之強化纖維分配混合至樹脂材料中而藉此促進樹脂材料之熔融。經於螺旋之螺旋刮板部加熱混練之成形材料於熔融促進部，藉由複數個突起將強化纖維分配混合至樹脂材料中，為了利用分配混合防逆流閥將強化纖維適當地分配混合至樹脂材料中而充分地熔融至充分之程度。於該狀態下，將成形材料輸送至分配混合防逆流閥。因此，於分配混合防逆流閥中，促進強化纖維相對於充分熔融之狀態之樹脂材料之分配，其結果使強化纖維均勻地分配混合。又，成形材料之樹脂材料充分地熔融而具有流動性，故不會出現強化纖維掛在分配混合防逆流閥上而堵塞之情形。其後，將適當地分配混合有強化纖維之成形材料貯存於加熱筒之前方，使螺旋沿軸向前進而射出至成形模具後，成形強度等品質良好之含強化纖維之樹脂成形品。In order to achieve the above object, the invention of the method for forming a resin molded article containing a reinforcing fiber according to the second aspect of the invention includes: a heating cylinder; a spiral inserted in the heating cylinder; and a distribution anti-backflow valve which is disposed in the spiral On the front end side, the molten resin material is mixed with the reinforcing fibers to uniformly distribute the reinforcing fibers to the resin material, and when the molding material is stored before the heating cylinder, the molding material flows toward the front of the heating cylinder, and does not occur when it is ejected. An injection device that reverses the flow of the molding material toward the heating cylinder; the injection device including the thermoplastic resin material and the reinforcing fiber is placed in the heating cylinder to form a resin molded article containing the reinforcing fiber, and the molding method is characterized in that Between the spiral spiral squeegee portion and the distribution-mixed anti-backflow valve, a melting promoting portion having a plurality of protrusions is provided, and the reinforcing resin of the molding material is distributed and mixed into the resin material to promote the resin material. Melting, rotating the spiral around the shaft, heating and kneading the above-mentioned forming material, in order to utilize the above-mentioned points The mixing-preventing valve is appropriately mixed and mixed with the reinforcing fiber into the resin material, and the melting-promoting portion causes the molding material to conduct heat from the heating cylinder to the inner hole of the heating cylinder to sufficiently heat the resin. The material is melted to a sufficient extent, and the molding material in a state in which the resin material is sufficiently melted is transferred to the distribution mixing backflow prevention valve, and the distribution of the reinforcing fibers of the molding material is promoted in the distribution mixing backflow prevention valve. Further, the molding material after the distribution is promoted is stored in front of the heating cylinder, the spiral is advanced in the axial direction, and the molding material stored before the heating cylinder is ejected to the molding die. According to the invention of claim 2, a melting promoting portion is provided between the spiral spiral squeegee portion and the distribution mixing backflow prevention valve. The melt-promoting portion has a plurality of protrusions, and the reinforcing fibers of the molding material are distributed and mixed into the resin material, thereby promoting melting of the resin material. The fused fiber is heated and kneaded in the spiral squeegee portion, and the reinforced fiber is distributed and mixed into the resin material by a plurality of protrusions, and the reinforced fiber is appropriately dispensed and mixed to the resin material by using the distribution mixing backflow prevention valve. Medium and fully melted to a sufficient extent. In this state, the shaped material is delivered to the distribution mixing backflow prevention valve. Therefore, in the distribution-mixed backflow prevention valve, the distribution of the reinforcing fiber to the resin material in a state of being sufficiently melted is promoted, and as a result, the reinforcing fibers are uniformly distributed and mixed. Further, since the resin material of the molding material is sufficiently melted and has fluidity, the reinforcing fibers are not caught on the distribution-mixed backflow prevention valve and are clogged. Then, a resin molded article containing a reinforcing fiber having a good quality such as a molding strength, which is obtained by appropriately distributing the molding material in which the reinforcing fibers are mixed, before the heating cylinder, and advancing the spiral in the axial direction to the molding die.
為達成上述目的，技術方案3之含強化纖維之樹脂成形品之成形方法之發明如技術方案1或2之發明，其中將上述加熱筒中與上述熔融促進部對應之位置之前方側之溫度設定為高出上述樹脂材料之熔點20～140℃之範圍。 技術方案3之發明中，如技術方案1或2之發明，將加熱筒中之與熔融促進部對應之位置之前方側之溫度設定為高出樹脂材料之熔點20～140℃，藉此可使成形材料之樹脂材料成確實充分地熔融之狀態。In the invention of the first aspect or the second aspect of the present invention, in the method of the present invention, the temperature of the front side of the heating cylinder corresponding to the melting-promoting portion is set to It is higher than the melting point of the above resin material by 20 to 140 °C. According to the invention of claim 1 or 2, the temperature of the front side of the position corresponding to the melting promoting portion in the heating cylinder is set to be 20 to 140 ° C higher than the melting point of the resin material, whereby the forming can be performed. The resin material of the material is in a state of being sufficiently molten.
為達成上述目的，技術方案4之含強化纖維之樹脂成形品之成形方法之發明如技術方案1至3中任一項之發明，其中使上述螺旋以40～120/min之轉速繞著軸旋轉，將其背壓設為0～5 MPa。 技術方案4之發明中，如技術方案1至3中任一項之發明，使螺旋以40～120/min之轉速繞著軸旋轉，且將其背設為0～5 MPa，於螺旋刮板部加熱並混練成形材料，其後，於熔融促進部促進樹脂材料之熔融，藉此可將成形材料之樹脂材料於確實充分地熔融之狀態下輸送至分配混合防逆流閥。The invention of any one of the first to third aspects of the present invention, wherein the spiral is rotated around the shaft at a rotational speed of 40 to 120/min. , set its back pressure to 0 ~ 5 MPa. In the invention of claim 4, the invention according to any one of claims 1 to 3, wherein the spiral is rotated about the shaft at a rotational speed of 40 to 120/min, and the back is set to 0 to 5 MPa, and the spiral scraper is used. When the molding material is heated and kneaded, the melting of the resin material is promoted in the melting promoting portion, whereby the resin material of the molding material can be surely sufficiently melted to be delivered to the distribution and mixing backflow prevention valve.
為達成上述目的，技術方案5之含強化纖維之樹脂成形品之成形方法之發明如技術方案1至4中任一項之發明，其中上述強化纖維係使用纖維長2～30 mm、直徑8～17 μm之玻璃纖維或纖維長2～30 mm、直徑7～10 μm之碳纖維。 技術方案5之發明中，如技術方案1至4中任一項之發明，即便為纖維長2～30 mm、直徑8～17 μm之玻璃纖維或纖維長2～30 mm、直徑7～10 μm之碳纖維等分配較為困難之成形材料，亦可實現適當地分配混合而成形強度等品質良好之含強化纖維之樹脂成形品。The invention of any one of the first to fourth aspects of the present invention, wherein the reinforcing fiber is a fiber having a length of 2 to 30 mm and a diameter of 8 to ～. 17 μm glass fiber or carbon fiber with a length of 2 to 30 mm and a diameter of 7 to 10 μm. In the invention of claim 5, the invention according to any one of claims 1 to 4, which is a glass fiber having a fiber length of 2 to 30 mm and a diameter of 8 to 17 μm or a fiber length of 2 to 30 mm and a diameter of 7 to 10 μm. In the case of a molding material which is difficult to be dispensed, such as a carbon fiber, it is possible to realize a resin molded article containing a reinforcing fiber having a good quality such as molding strength and mixing.
為達成上述目的，技術方案6之含強化纖維之樹脂成形品之成形方法之發明如技術方案1至4中任一項之發明，其中上述樹脂材料係使用苯乙烯系樹脂，上述強化纖維係使用玻璃纖維。 技術方案6之發明中，如技術方案1至4中任一項之發明，樹脂材料使用苯乙烯系樹脂，強化纖維使用玻璃纖維，藉此可實現將玻璃纖維適當地分配混合至苯乙烯系樹脂中，成形強度等品質良好之含強化纖維之樹脂成形品。The invention of any one of the first to fourth aspects of the present invention, wherein the resin material is a styrene resin, and the reinforcing fiber is used. glass fiber. In the invention according to any one of claims 1 to 4, the resin material is a styrene resin, and the reinforcing fiber is a glass fiber, whereby the glass fiber can be appropriately dispensed and mixed to the styrene resin. Among them, a resin molded article containing a reinforcing fiber having good quality such as molding strength.
為達成上述目的，技術方案7之含強化纖維之樹脂成形品之成形方法之發明如技術方案1至6中任一項之發明，其中將上述強化纖維相對於使上述樹脂材料與上述強化纖維合在一起之整體材料之比率設為10～60重量%。 請求項7之發明中，如技術方案1至6中任一項之發明，使上述強化纖維相對於使上述樹脂材料與上述強化纖維合在一起之整體材料之比率為10～60重量%時，亦可實現將強化纖維適當地分配混合至樹脂材料中，成形強度等品質良好之含強化纖維之樹脂成形品。 [發明之效果]The invention of any one of the first to sixth aspects of the present invention, wherein the reinforcing fiber is combined with the reinforcing fiber, and the reinforcing fiber is combined with the reinforcing fiber. The ratio of the total materials together is set to 10 to 60% by weight. In the invention of any one of claims 1 to 6, the ratio of the reinforcing fiber to the total material in which the resin material and the reinforcing fiber are combined is 10 to 60% by weight. It is also possible to realize a resin molded article containing reinforcing fibers having a good quality such as a molding strength by appropriately distributing and mixing the reinforcing fibers into a resin material. [Effects of the Invention]
根據本發明，可將強化纖維適當地分配混合至樹脂材料中而成形強度等品質良好之含強化纖維之樹脂成形品。According to the present invention, the reinforcing fiber-containing resin molded article having good quality such as molding strength can be appropriately dispensed and mixed into the resin material.
最初，根據圖1對本發明中使用之成形裝置之一實施形態進行說明。本實施形態之成形裝置具備成形材料供給裝置1、射出裝置2、成形模具3、及鎖模裝置4。First, an embodiment of a molding apparatus used in the present invention will be described with reference to Fig. 1 . The molding apparatus of the present embodiment includes a molding material supply device 1, an injection device 2, a molding die 3, and a mold clamping device 4.
成形材料供給裝置1具備：進給裝置10，其分別個別地供給樹脂材料與強化纖維；及重量計測機構11，其計測藉由各進給裝置10供給之樹脂材料與強化纖維之重量。各進給裝置10具備：具有料斗12a之汽缸12；嵌插至汽缸12內之進給螺旋13；及使進給螺旋13繞著軸可控制地旋轉驅動之伺服馬達14。重量計測機構11例如可藉由於汽缸12之下方設置負載單元而構成。各進給裝置10可於藉由重量計測機構11分別計測樹脂材料與強化纖維之重量之同時控制驅動進給螺旋13之伺服馬達14之每單位時間之轉數，而控制樹脂材料與強化纖維之供給量，又，僅藉由設定進給螺旋13之每單位時間之轉數亦可控制樹脂材料與強化纖維之供給量。又，成形材料供給裝置1可為供給使包含樹脂材料之顆粒中含有強化纖維者，或者亦可將線狀且連續之強化纖維直接供給至射出裝置2之加熱筒20之落下孔20a內，或者將線狀且連續之強化纖維於射出裝置2之加熱筒20之落下孔20a上切斷成特定之長度，而供給至落下孔20a內。The molding material supply device 1 includes a feeding device 10 that individually supplies a resin material and reinforcing fibers, and a weight measuring mechanism 11 that measures the weight of the resin material and the reinforcing fibers supplied from each feeding device 10. Each of the feeding devices 10 includes a cylinder 12 having a hopper 12a, a feed screw 13 inserted into the cylinder 12, and a servo motor 14 that rotationally drives the feed screw 13 about the shaft. The weight measuring mechanism 11 can be configured, for example, by providing a load unit below the cylinder 12. Each feeding device 10 can control the resin material and the reinforcing fiber by controlling the number of revolutions per unit time of the servo motor 14 that drives the feeding screw 13 by measuring the weight of the resin material and the reinforcing fiber by the weight measuring mechanism 11, respectively. In addition, the supply amount of the resin material and the reinforcing fiber can be controlled only by setting the number of revolutions per unit time of the feed screw 13. Further, the molding material supply device 1 may be such that the reinforcing resin is contained in the particles containing the resin material, or the linear and continuous reinforcing fibers may be directly supplied into the dropping hole 20a of the heating cylinder 20 of the injection device 2, or The linear and continuous reinforcing fibers are cut into a predetermined length on the dropping hole 20a of the heating cylinder 20 of the injection device 2, and supplied to the dropping hole 20a.
射出裝置2具備：加熱筒20；螺旋21，其以能夠繞著軸旋轉、且能夠沿軸向移動之方式嵌插至加熱筒20內；汽缸頭22，其具有觸碰到成形模具3之噴嘴22a；及加熱機構23，其對加熱筒20以能夠控制之方式加熱。於加熱筒20之基端側(亦稱為上游側，圖中成為右側)之上方，形成有供投入成形材料之落下孔20a，於落下孔20a設置有將自各進給裝置10供給之成形材料引導至落下孔20a之滑道24。加熱機構23係於加熱筒20及包含噴嘴22a之汽缸頭22設置有複數個，且分別以能夠控制之方式加熱至特定之溫度，通常採用藉由通電而發熱之帶式加熱器。加熱筒20與汽缸頭22之適當之溫度係劃分範圍而設定。帶式加熱器23根據加熱筒21與汽缸頭22之已設定各自適當之溫度之範圍而設置。又，於加熱筒20之落下孔20a之周圍，設置有用以使成形材料投入至加熱筒20時不會被不慎加熱之冷卻構件(省略圖示)。The injection device 2 includes a heating cylinder 20, a screw 21 that is inserted into the heating cylinder 20 so as to be rotatable about an axis and movable in the axial direction, and a cylinder head 22 having a nozzle that touches the forming mold 3. 22a; and a heating mechanism 23 that heats the heating cylinder 20 in a controllable manner. Above the base end side (also referred to as the upstream side, the right side in the drawing) of the heating cylinder 20, a dropping hole 20a into which the molding material is supplied is formed, and the falling hole 20a is provided with a molding material to be supplied from each feeding device 10. Guided to the slide 24 of the drop hole 20a. The heating mechanism 23 is provided in a plurality of cylinders 22 including the heating cylinder 20 and the nozzle 22a, and is heated to a specific temperature in a controllable manner. Usually, a belt heater that generates heat by energization is used. The appropriate temperature range of the heating cylinder 20 and the cylinder head 22 is set. The band heater 23 is provided in accordance with the range in which the heating cylinder 21 and the cylinder head 22 have been set to respective appropriate temperatures. Further, a cooling member (not shown) that is used to prevent the molding material from being inadvertently heated when the molding material is introduced into the heating cylinder 20 is provided around the falling hole 20a of the heating cylinder 20.
螺旋21自基端側朝前方前端側(圖之左側)具備：螺旋刮板部25、熔融促進部26、分配混合防逆流閥27、及螺旋頭28。螺旋21之螺旋刮板部25自基端側朝前端側形成有進給區A、壓縮區B、及計量區C。螺旋21之軸部21a之直徑中，進給區A為相對較小之直徑，計量區C為相對較大之直徑，壓縮區B設定為自進給區A從連續之相對較小之直徑朝計量區C向連續之相對較大之直徑逐漸變化。The spiral 21 includes a spiral blade portion 25, a melting promoting portion 26, a distribution mixing backflow prevention valve 27, and a screw head 28 from the proximal end side toward the front distal end side (the left side in the drawing). The spiral squeegee portion 25 of the spiral 21 is formed with a feed zone A, a compression zone B, and a metering zone C from the base end side toward the front end side. In the diameter of the shaft portion 21a of the spiral 21, the feed zone A is a relatively small diameter, the metering zone C is a relatively large diameter, and the compression zone B is set to a relatively small diameter from the continuous feed zone A toward The metering zone C gradually changes toward a relatively large diameter that is continuous.
本實施形態之螺旋21中，將自螺旋刮板部25之基端側端部至熔融促進部26之前端側為止(分配混合防逆流閥27之下述之間隔件為止)之長度L相對於直徑D之比L/D設定為18。然而，螺旋21之L/D並不限定於此，可設定為18～28左右。再者，螺旋21之直徑D並無特別限定，但多使用30～200 mm左右者。In the screw 21 of the present embodiment, the length L from the proximal end side end portion of the spiral blade portion 25 to the front end side of the melting promotion portion 26 (to which the following spacer of the anti-backflow valve 27 is distributed) is opposed to The ratio D of the diameter D is set to 18. However, the L/D of the spiral 21 is not limited to this, and can be set to about 18 to 28. Further, the diameter D of the spiral 21 is not particularly limited, but a maximum of 30 to 200 mm is used.
又，螺旋21之壓縮比、即藉由螺旋21之螺旋刮板部25與軸部21a形成之槽之進給區A與計量區C之容積比為1.5～2.5，更佳可設定為1.7～1.8。再者，螺旋21之表面與加熱筒20之內孔20b之表面尤其於使用玻璃纖維作為強化纖維之情形時，較理想為預先實施耐磨耗加工處理。Further, the compression ratio of the spiral 21, that is, the volume ratio of the feed zone A to the metering zone C of the groove formed by the spiral blade portion 25 of the spiral 21 and the shaft portion 21a is 1.5 to 2.5, more preferably 1.7 to ≥ 1.8. Further, in the case where the surface of the spiral 21 and the surface of the inner hole 20b of the heating cylinder 20 are particularly used in the case where glass fibers are used as the reinforcing fibers, it is preferable to perform the abrasion-resistant processing in advance.
分配混合防逆流閥27具備：間隔件50，其設置於螺旋21之熔融促進部26之前方；及圓筒狀之環51，其能夠沿軸向移動地設置於該間隔件50與螺旋頭28之間。The distribution hybrid backflow prevention valve 27 includes a spacer 50 that is disposed in front of the melting promotion portion 26 of the spiral 21, and a cylindrical ring 51 that is axially movably disposed on the spacer 50 and the spiral head 28. between.
間隔件50以較加熱筒20之內孔20b小之直徑而成形。因此，於間隔件50之外周面與加熱筒20之內孔20b之間，形成有能夠輸送成形材料之間隙。又，環51之後端面51a設置成於沿軸向後退移動而抵接於間隔件50時，可堵塞間隔件50之外周面與加熱筒20之內孔20b之間之間隙。進而，於螺旋頭28之後端形成有止動部28a，其於環51前進移動時與該環51抵接且限制環51之前進移動。於間隔件50與螺旋頭28之間之軸部52，配設有複數個凹部53。又，於環51上形成有複數個孔54。進而，將軸部52之外徑設計為小於環51之內徑。軸部52之凹部53與環51之孔54配置成如下關係，即，於環51前進移動而抵接於螺旋頭28之止動部28a之狀態下，環51之孔54位於軸向上彼此鄰接之凹部53、53之間(亦可換言之，凹部53位於軸向上彼此鄰接之孔54、54之間)。The spacer 50 is formed with a smaller diameter than the inner hole 20b of the heating cylinder 20. Therefore, a gap capable of conveying the molding material is formed between the outer circumferential surface of the spacer 50 and the inner hole 20b of the heating cylinder 20. Further, when the end surface 51a of the ring 51 is disposed to retreat in the axial direction to abut against the spacer 50, the gap between the outer circumferential surface of the spacer 50 and the inner hole 20b of the heating cylinder 20 can be blocked. Further, a stopper portion 28a is formed at the rear end of the screw head 28, and abuts against the ring 51 when the ring 51 moves forward and restricts the ring 51 from moving forward. A plurality of recesses 53 are disposed in the shaft portion 52 between the spacer 50 and the screw head 28. Further, a plurality of holes 54 are formed in the ring 51. Further, the outer diameter of the shaft portion 52 is designed to be smaller than the inner diameter of the ring 51. The recess 53 of the shaft portion 52 and the hole 54 of the ring 51 are disposed in a relationship in which the holes 54 of the ring 51 are axially adjacent to each other in a state where the ring 51 is moved forward to abut against the stopper 28a of the screw head 28. Between the recesses 53, 53 (in other words, the recesses 53 are located between the holes 54, 54 which are adjacent to each other in the axial direction).
藉由螺旋21繞著軸旋轉而將成形材料自熔融促進部26經由間隔件50之外周面與加熱筒20之內孔20b之間之間隙輸送至前方時，環51藉由該成形材料之壓力而朝軸向前方移動。而且，於形成於軸部52之凹部53、環51與軸部52之間之空間55、及環51之孔54以交替蜿蜒之方式送出，藉此將強化纖維分配混合至成形材料之樹脂材料中。又，於螺旋21自後退之狀態前進而射出成形材料時，環51藉由成形材料之壓力而朝軸向後方相對於軸部52進行相對移動而抵接於間隔件50，環51之後端面51a堵塞間隔件50之外周面與加熱筒20之內孔20b之間之間隙而防止成形材料之逆流。When the molding material is conveyed to the front from the melting promoting portion 26 via the gap between the outer peripheral surface of the spacer 50 and the inner hole 20b of the heating cylinder 20 by the rotation of the screw 21 around the shaft, the ring 51 is pressed by the molding material. It moves toward the front of the axis. Further, the recess 55 formed in the shaft portion 52, the space 55 between the ring 51 and the shaft portion 52, and the hole 54 of the ring 51 are fed alternately, whereby the reinforcing fibers are dispensed and mixed into the resin of the molding material. In the material. Further, when the spiral 21 advances from the retracted state and the molding material is ejected, the ring 51 is relatively moved in the axial direction rearward with respect to the shaft portion 52 by the pressure of the molding material, and abuts against the spacer 50, and the end face 51a of the ring 51 The gap between the outer peripheral surface of the spacer 50 and the inner hole 20b of the heating cylinder 20 is blocked to prevent backflow of the molding material.
熔融促進部26係配設於分配混合防逆流閥27之上游側、即螺旋21之基端側，促進樹脂材料之熔融者，故於圖1所示之實施形態之情形時，配設於螺旋21之螺旋刮板部25之前端側端部與分配混合防逆流閥27之間，且藉由計量區C之設計成較軸部21a更大直徑之圓筒狀之外周面而構成。如此藉由將熔融促進部26之外周面設計成大直徑而使相對於加熱筒20之內孔20b之間隔變窄，其結果，藉由將經帶式加熱器23加熱之加熱筒20之熱傳導至成形材料(將該加熱稱為外部加熱，與由螺旋21繞著軸旋轉引起之剪切加熱相區別)，可促進樹脂材料之熔融而不會折斷強化樹脂。The melt-promoting portion 26 is disposed on the upstream side of the distribution-mixed backflow prevention valve 27, that is, on the proximal end side of the spiral 21, and promotes melting of the resin material. Therefore, in the case of the embodiment shown in Fig. 1, the spiral-promoting portion 26 is disposed in the spiral The front end side end portion of the spiral squeegee portion 25 of the 21 is disposed between the distribution mixing backflow prevention valve 27 and the cylindrical outer circumferential surface of the measuring portion C which is designed to have a larger diameter than the shaft portion 21a. Thus, by designing the outer peripheral surface of the melt accelerating portion 26 to have a large diameter, the interval with respect to the inner hole 20b of the heating cylinder 20 is narrowed, and as a result, heat conduction by the heating cylinder 20 heated by the belt heater 23 is performed. The molding material (this heating is referred to as external heating, which is distinguished from the shear heating by the rotation of the spiral 21 about the axis) promotes melting of the resin material without breaking the reinforcing resin.
再者，熔融促進部26並不限定於圖1所示之實施形態，亦可如圖2所示，藉由於螺旋21之軸部21a形成複數個突起26a所成之杜爾麥基式部而構成。又，熔融促進部26只要可促進樹脂材料之熔融，則並不限定於圖1、圖2所示之實施形態，亦可藉由複數個凹部、複數個突條或槽而構成(省略圖示)。而且，於由複數個凹部、複數個突條或槽構成熔融促進部26之情形時，亦可將該等複數個凹部、突條或槽以沿軸向延伸之方式排列，又，亦可相對於軸向以特定之角度呈螺旋狀排列。進而，熔融促進部26可藉由使螺旋21之螺旋刮板部25自計量區C朝前方延長而構成，或亦可藉由如下方式構成：將該延長之螺旋刮板部以特定之間隔開槽而成斷續者，或如所謂副螺旋刮板般設置較螺旋21之計量區C等之螺旋刮板部25低(直徑小)之副螺旋刮板，或者於軸向上以較螺旋21之計量區C等之螺旋刮板部25短(窄)之間距形成熔融促進用螺旋刮板部，或形成複數個所謂偏心螺旋刮板部。該等情形時，較理想為將自熔融促進部26之螺旋21之軸部21a至加熱筒20之內孔20b為止之高度設定為自計量區C之軸部21a至加熱筒20之內孔20b為止之高度之1.0～0.4倍，即，將熔融促進部26之螺旋21之軸部21a之直徑設定為大於計量區C之軸部21a之直徑。於採用除上述圖1所示以外所例示之熔融促進部之情形時，不僅促進樹脂材料之熔融，亦具有將強化纖維分配混合至樹脂材料之功能。Further, the melting promoting portion 26 is not limited to the embodiment shown in Fig. 1, and as shown in Fig. 2, the shaft portion 21a of the spiral 21 is formed by forming a Durham-based portion formed by a plurality of projections 26a. Composition. Further, the melting promotion unit 26 is not limited to the embodiment shown in FIGS. 1 and 2 as long as it can promote the melting of the resin material, and may be constituted by a plurality of concave portions, a plurality of protrusions or grooves (illustration omitted) ). Further, when the melting promoting portion 26 is composed of a plurality of concave portions and a plurality of protrusions or grooves, the plurality of concave portions, protrusions or grooves may be arranged to extend in the axial direction, or may be relatively Arranged in a spiral at a specific angle in the axial direction. Further, the melting promoting portion 26 may be configured by extending the spiral squeegee portion 25 of the spiral 21 from the metering region C toward the front, or may be configured by separating the extended spiral squeegee portions with a specific interval The groove is made into a discontinuity, or a sub-screw blade having a lower (diameter) smaller than the spiral blade portion 25 of the metering region C of the spiral 21, or a relatively spiral 21 in the axial direction, as in the so-called sub-screw blade The spiral squeegee portion 25 of the metering area C or the like forms a melt-promoting spiral squeegee portion at a short (narrow) distance, or forms a plurality of so-called eccentric spiral squeegee portions. In these cases, it is preferable to set the height from the shaft portion 21a of the spiral 21 of the melting promoting portion 26 to the inner hole 20b of the heating cylinder 20 from the shaft portion 21a of the metering region C to the inner hole 20b of the heating cylinder 20. The diameter of the shaft portion 21a of the spiral 21 of the melting promoting portion 26 is set to be larger than the diameter of the shaft portion 21a of the metering region C by 1.0 to 0.4 times the height. In the case of using the melt-promoting portion exemplified in addition to the above-described FIG. 1, it is possible to promote not only the melting of the resin material but also the function of distributing and mixing the reinforcing fibers to the resin material.
於分配混合防逆流閥27之更前方之前端配設有螺旋頭28。於螺旋頭28之止動部28a，於周向形成有複數個可將成形材料輸送至加熱筒20之前方之槽29。螺旋頭28之止動部28a之前方可設計成大致圓錐形，又，亦可將分配混合防逆流閥27與加熱筒20之前方連通，且於圓筒狀部分形成複數個可將分配混合後之成形材料自分配混合防逆流閥27輸送至加熱筒20之前方之槽(省略圖示)。A screw head 28 is provided at the front end of the distribution hybrid backflow prevention valve 27. In the stopper portion 28a of the screw head 28, a plurality of grooves 29 for conveying the molding material to the front of the heating cylinder 20 are formed in the circumferential direction. The stopper portion 28a of the screw head 28 can be designed to be substantially conical in the front, and the distribution hybrid backflow prevention valve 27 can be connected to the front of the heating cylinder 20, and a plurality of cylindrical portions can be formed to mix and distribute. The molding material is sent from the distribution anti-backflow valve 27 to the groove (not shown) in front of the heating cylinder 20.
成形模具3藉由固定模30與可動模31構成，且藉由將兩模30、31閉模而形成與成形品之形狀相應之形狀之模穴32。鎖模裝置4具備：固定盤40，其供安裝固定模30；可動盤41，其供安裝可動模31；拉桿42，其將固定盤40支持於端部並且將可動盤41插通至中間部而能夠相對於固定盤40接近、遠退移動地支持可動盤41；及模開合機構，其使可動盤41相對於固定盤40接近、遠退移動而開閉，並且於將可動模31相對於固定模30閉模時以特定之力鎖模(省略圖示)。The molding die 3 is composed of a fixed die 30 and a movable die 31, and a mold cavity 32 having a shape corresponding to the shape of the molded article is formed by closing the two molds 30 and 31. The clamping device 4 is provided with a fixed disk 40 for mounting the fixed die 30, a movable disk 41 for mounting the movable die 31, and a pull bar 42 for supporting the fixed disk 40 to the end and inserting the movable disk 41 to the intermediate portion The movable disk 41 can be supported in proximity to the fixed disk 40, and the mold opening and closing mechanism can open and close the movable disk 41 with respect to the fixed disk 40, and the movable die 31 is opposed to the movable die 31. When the fixed mold 30 is closed, it is clamped with a specific force (not shown).
其次，藉由使用如上所述構成之成形裝置之情形而詳細地說明本發明之含強化纖維之樹脂成形品之成形方法之一實施形態。再者，於該實施形態中，採用聚丙烯之顆粒作為熱塑性樹脂，又，採用玻璃纖維作為強化纖維。而且，玻璃纖維係纖維長2～30 mm(更佳為纖維長3～15 mm)且直徑6～17 μm者，進而採用由捆束材捆束而成者。進而於成形材料中，除聚丙烯與玻璃纖維之外還包含改質劑等添加劑，且相對於成形材料整體含有10～60重量%、較佳為20～40重量%之玻璃纖維。Next, an embodiment of the method for forming a reinforced fiber-containing resin molded article of the present invention will be described in detail by using the molding apparatus configured as described above. Further, in this embodiment, pellets of polypropylene are used as the thermoplastic resin, and glass fibers are used as the reinforcing fibers. Further, the glass fiber-based fiber has a length of 2 to 30 mm (more preferably, a fiber length of 3 to 15 mm) and a diameter of 6 to 17 μm, and is bundled with a bundle of materials. Further, in the molding material, an additive such as a modifier is contained in addition to the polypropylene and the glass fiber, and the glass fiber is contained in an amount of 10 to 60% by weight, preferably 20 to 40% by weight based on the entire molding material.
本實施形態中，於成形含強化纖維之樹脂成形品之前，於螺旋21之螺旋刮板部25之計量區C之前方前端、與分配混合防逆流閥27之防逆流閥部51之間設置熔融促進部26。In the present embodiment, before the resin molded article containing the reinforcing fibers is molded, melting is provided between the front end of the metering region C of the spiral blade portion 25 of the spiral 21 and the backflow prevention valve portion 51 of the distribution anti-backflow valve 27. Promotion Department 26.
於成形含強化纖維之樹脂成形品時，將與聚丙烯之顆粒捆束之玻璃纖維分別個別地投入至各進給裝置10之料斗12a。成形材料中所含之聚丙烯、玻璃纖維、及添加劑藉由設置於各進給裝置10之汽缸12之負載單元11而正確地計測重量，並根據該計測結果而控制伺服馬達14，藉此可以所設定之比率將正確之量之成形材料投入至射出裝置2之加熱筒20內。When the resin molded article containing the reinforcing fibers is molded, the glass fibers bundled with the particles of the polypropylene are individually supplied to the hopper 12a of each of the feeding devices 10. The polypropylene, the glass fiber, and the additive contained in the molding material are accurately measured by the load unit 11 provided in the cylinder 12 of each feeding device 10, and the servo motor 14 is controlled based on the measurement result. The set ratio puts the correct amount of the molding material into the heating cylinder 20 of the injection device 2.
射出裝置2之加熱筒20內之螺旋21繞著軸每單位時間之轉數(旋轉速度)為40～120轉/分鐘(/min)，更佳為50～100轉/分鐘(/min)左右，螺旋21之周速設為5000～15000 mm/分鐘左右。螺旋21之轉速可根據成形材料之種類、或螺旋21之直徑等而適當地控制。The number of revolutions (rotation speed) per unit time of the spiral 21 in the heating cylinder 20 of the injection device 2 is 40 to 120 rpm (/min), more preferably 50 to 100 rpm (/min). The peripheral speed of the spiral 21 is set to about 5,000 to 15,000 mm/min. The number of revolutions of the spiral 21 can be appropriately controlled depending on the type of the molding material, the diameter of the spiral 21, and the like.
已供給至加熱筒20內之成形材料沿著繞軸旋轉驅動之螺旋21之螺旋刮板部25而自進給區A依序輸送至壓縮區B、計量區C。此時，加熱筒20與包含噴嘴之汽缸頭22之各位置藉由帶式加熱器23而加熱至與各自之位置適宜之溫度。與加熱筒20之間形成之螺旋21之進給區A、壓縮區B、及計量區C之空間逐漸變窄，由此成形材料之聚丙烯藉由螺旋21之旋轉而剪切發熱，又，藉由自經帶式加熱器23加熱之加熱筒20傳導之熱而進行外部加熱。因此，聚丙烯自加熱筒20之上游側即進給區A經由壓縮區B輸送至下游側即計量區C之前大致已熔融塑化，又，玻璃纖維已分散混合。The molding material that has been supplied into the heating cylinder 20 is sequentially conveyed from the feeding zone A to the compression zone B and the metering zone C along the spiral blade section 25 of the screw 21 that is rotationally driven. At this time, the respective positions of the heating cylinder 20 and the cylinder head 22 including the nozzle are heated by the belt heater 23 to a temperature suitable for each position. The space of the feed zone A, the compression zone B, and the metering zone C of the spiral 21 formed between the heating cylinder 20 is gradually narrowed, whereby the polypropylene of the molding material is sheared and heated by the rotation of the spiral 21, and External heating is performed by heat conducted from the heating cylinder 20 heated by the belt heater 23. Therefore, the polypropylene is substantially melt-plasticized from the upstream side of the heating cylinder 20, that is, the feeding zone A, to the downstream side, that is, the metering zone C, via the compression zone B, and the glass fibers are dispersed and mixed.
此處，成形材料中所含之玻璃纖維於加熱筒20內若由螺旋21之旋轉等而受到過度之壓力則會折斷，從而無法成形含有所設定之長度之玻璃纖維之成形品。該情形時，無法成形強度等品質良好之含強化纖維之樹脂成形品。另一方面，若成形材料中所含之聚丙烯並未充分地熔融塑化，則無法使玻璃纖維均勻地混合。若無法使玻璃纖維均勻地混合，則仍無法成形強度等品質良好之含強化纖維之樹脂成形品。Here, the glass fiber contained in the molding material is broken by excessive pressure during the rotation of the spiral 21 in the heating cylinder 20, and it is not possible to mold a molded article containing the glass fiber of the set length. In this case, a resin molded article containing a reinforcing fiber having good quality such as strength cannot be formed. On the other hand, if the polypropylene contained in the molding material is not sufficiently melt-plasticized, the glass fibers cannot be uniformly mixed. If the glass fibers cannot be uniformly mixed, a resin molded article containing reinforcing fibers having good quality such as strength cannot be formed.
因此，於本實施形態中，自螺旋21之螺旋刮板部25將成形材料輸送至熔融促進部26。進而，於本實施形態中，設置於加熱筒20與汽缸頭22之帶式加熱器23中，將由除噴嘴22a外自前方前端側起位於第2號之帶式加熱器23a加熱之加熱筒20之範圍設定為最高溫度。由自該前方前端側起第2號之帶式加熱器23a加熱之範圍內之加熱筒20之溫度例如可設為280℃左右。進而，又於本實施形態中，將螺旋21之旋轉速度如上所述設定為40～120/min，更佳為50～100/min，又，將螺旋21之背壓如下所述設定為0～5 MPa。再者，關於聚丙烯之熔點，由於一般之射出成形中採用均聚物，故為160～165℃，但可根據聚丙烯之取決於種類之熔點，進而，於採用除聚丙烯以外作為熱塑性樹脂之情形時可根據該熱塑性樹脂之取決於種類之熔點而設定加熱筒20之加熱溫度。此處，於以上敍述中，熱塑性樹脂材料之熔點與加熱筒20之加熱溫度之設定關係如下。即，將包含汽缸頭22且加熱筒20之設定為最高溫度之範圍(通常，位於加熱筒20之前方前端之汽缸頭22、或加熱筒20之安裝汽缸頭22之前方附近之範圍)之溫度設定為高出上述熔點之溫度20～140℃(更佳為20～70℃)。Therefore, in the present embodiment, the molding material is conveyed from the spiral blade portion 25 of the spiral 21 to the melting promotion portion 26. Further, in the present embodiment, the heating tube 20 is provided in the heating device 20 and the band heater 23 of the cylinder head 22, and the heating tube 20 is heated by the second band heater 23a from the front end side except the nozzle 22a. The range is set to the highest temperature. The temperature of the heating cylinder 20 in the range heated by the second belt heater 23a from the front end side can be, for example, about 280 °C. Further, in the present embodiment, the rotation speed of the spiral 21 is set to 40 to 120 / min, more preferably 50 to 100 / min as described above, and the back pressure of the spiral 21 is set to 0 as follows. 5 MPa. Further, the melting point of polypropylene is 160 to 165 ° C due to the use of a homopolymer in general injection molding, but it may be a thermoplastic resin depending on the type of polypropylene depending on the type of polypropylene. In this case, the heating temperature of the heating cylinder 20 can be set depending on the melting point of the thermoplastic resin depending on the type. Here, in the above description, the relationship between the melting point of the thermoplastic resin material and the heating temperature of the heating cylinder 20 is as follows. That is, the temperature including the cylinder head 22 and the heating cylinder 20 set to the highest temperature range (generally, the cylinder head 22 located at the front end of the heating cylinder 20 or the vicinity of the cylinder head 22 of the heating cylinder 20) is set. The temperature is set to be higher than the above melting point by 20 to 140 ° C (more preferably 20 to 70 ° C).
包含藉由螺旋21繞著軸旋轉而塑化熔融之聚丙烯、與混合至其中且分散之玻璃纖維之成形材料自螺旋刮板部25送出至熔融促進部26。圖1所示之實施形態之熔融促進部26中，流路之寬度(高度)較螺旋刮板部25之計量區C窄(熔融促進部26之螺旋21之軸部21a之直徑具有計量區C之螺旋21之軸部21a之直徑以上之大小)，故藉由帶式加熱器23並經由加熱筒20將成形材料進一步進行外部加熱。因此，於螺旋刮板部25促進已熔融塑化之成形材料之聚丙烯進一步熔融，其結果，聚丙烯之熔融殘留消失，聚丙烯成為充分地熔融之狀態。此處，作為樹脂材料之聚丙烯充分熔融之狀態係指為了利用分配混合防逆流閥27將作為強化纖維之玻璃纖維適當地分配混合至聚丙烯中，於螺旋刮板部25使已熔融塑化之聚丙烯進一步熔融至充分之程度，從而未熔融之狀態之聚丙烯不殘留，而是完全熔融之狀態。The molding material including the plasticized and melted polypropylene which is rotated by the spiral 21 around the shaft, and the glass fiber mixed therein and dispersed is sent from the spiral blade portion 25 to the melt promoting portion 26. In the melting promoting portion 26 of the embodiment shown in Fig. 1, the width (height) of the flow path is narrower than the metering area C of the spiral blade portion 25 (the diameter of the shaft portion 21a of the spiral 21 of the melting promoting portion 26 has the metering area C Since the diameter of the shaft portion 21a of the spiral 21 is equal to or larger than the diameter of the shaft portion 21a, the forming material is further externally heated by the belt heater 23 via the heating cylinder 20. Therefore, the polypropylene of the molding material which has been melt-plasticized is further melted in the spiral squeegee portion 25, and as a result, the molten residue of the polypropylene disappears and the polypropylene is sufficiently melted. Here, the state in which the polypropylene as the resin material is sufficiently melted means that the glass fiber as the reinforcing fiber is appropriately dispensed and mixed into the polypropylene by the distribution mixing backflow prevention valve 27, and the melted plasticizing is performed in the spiral blade portion 25. The polypropylene is further melted to a sufficient extent so that the unmelted polypropylene does not remain but is completely melted.
又，於圖2所示之實施形態中，熔融促進部26之螺旋21之軸部21a之直徑與計量區C之螺旋21之軸部21a之直徑大致相同，但於熔融促進部26之螺旋21之軸部21a形成杜爾麥基式部等複數個突起26a等，藉此不僅由帶式加熱器23將聚丙烯進行外部加熱而促進熔融，而且亦促進玻璃纖維相對於聚丙烯之分配。Further, in the embodiment shown in Fig. 2, the diameter of the shaft portion 21a of the spiral 21 of the melting promoting portion 26 is substantially the same as the diameter of the shaft portion 21a of the spiral 21 of the metering region C, but the spiral 21 of the melting promoting portion 26 The shaft portion 21a forms a plurality of projections 26a and the like such as a Durma-based portion, whereby not only the polypropylene is externally heated by the band heater 23 to promote melting, but also the distribution of the glass fibers to the polypropylene is promoted.
於熔融促進部26聚丙烯充分地熔融之狀態之成形材料藉由螺旋21繞著軸旋轉而進一步自熔融促進部26輸送至分配混合防逆流閥27。此時，藉由自上游(螺旋21之基端側)向下游(螺旋21之前方前端側)傳送之成形材料之壓力而相對於軸部52進行相對地前進移動，分配混合防逆流閥27之環51之後端面51a成為與設置於螺旋21之間隔件50隔開之狀態。因此，成形材料通過間隔件50之外周側面與加熱筒20之內孔20b之間，且流入至間隔件50之前方。而且，成形材料交替通過形成於軸部52之凹部53、環51與軸部52之間之空間55、及環51之孔54。此時之成形材料並非與螺旋21之軸向平行地以直線狀流動，而是蜿蜒地流動。因此，成形材料中，利用分配混合防逆流閥27將玻璃纖維以均勻之分佈而分配混合至於熔融促進部26受到外部加熱而並非剪切發熱而成為充分地熔融之狀態之聚丙烯中。其後，分配混合之成形材料之大部分通過止動部28a之槽29，輸送至加熱筒20內之前方。The molding material in a state in which the polypropylene is sufficiently melted by the melting promoting portion 26 is further rotated from the melt promoting portion 26 to the distribution mixing backflow prevention valve 27 by the screw 21 rotating around the shaft. At this time, the pressure of the molding material conveyed from the upstream (the base end side of the spiral 21) to the downstream (the front end side of the spiral 21) is relatively advanced with respect to the shaft portion 52, and the hybrid backflow prevention valve 27 is distributed. The end surface 51a of the ring 51 is separated from the spacer 50 provided on the spiral 21. Therefore, the molding material passes between the outer peripheral side surface of the spacer 50 and the inner hole 20b of the heating cylinder 20, and flows into the front of the spacer 50. Further, the molding material alternately passes through the recess 53 formed in the shaft portion 52, the space 55 between the ring 51 and the shaft portion 52, and the hole 54 of the ring 51. At this time, the molding material does not flow linearly in parallel with the axial direction of the spiral 21, but flows in a meandering manner. Therefore, in the molding material, the glass fibers are distributed and mixed in a uniform distribution by the distribution-mixing anti-backflow valve 27 to the polypropylene in a state in which the melting-promoting portion 26 is externally heated and is not sufficiently sheared and heated. Thereafter, most of the molding material to be mixed and mixed is conveyed to the front of the heating cylinder 20 through the groove 29 of the stopper portion 28a.
隨著將成形材料輸送並貯存於加熱筒20之前方，螺旋21沿著軸向後退移動。此時螺旋21之背壓設定為以樹脂壓換算而成0～5 MPa。藉由如此設定螺旋21之背壓而不會對玻璃纖維賦予壓力，因此，玻璃纖維不會折斷而是以保有特定之長度之狀態混合至聚丙烯中，輸送並貯存於加熱筒20之前方。As the forming material is conveyed and stored in front of the heating cylinder 20, the spiral 21 moves back in the axial direction. At this time, the back pressure of the spiral 21 is set to be 0 to 5 MPa in terms of resin pressure. By setting the back pressure of the spiral 21 in this way, no pressure is applied to the glass fiber, and therefore, the glass fiber is not broken, but is mixed into the polypropylene in a state of retaining a specific length, and is conveyed and stored in front of the heating cylinder 20.
若貯存於加熱筒20前方之成形材料達到所設定之量(計量步驟)，其結果使螺旋21後退至特定之位置，則成形材料置備於下一週期之射出步驟中而使射出裝置2成為待機狀態。於該待機狀態時，亦可藉由使螺旋21繞著軸逆向旋轉或使螺旋21沿著軸向前進，而使環51於成形材料之壓力下相對於軸部52相對地朝軸向後方移動，使環51之後端面51a抵接於間隔件50，將間隔件50之外周面與加熱筒20之內孔20b之間之間隙堵塞。When the molding material stored in front of the heating cylinder 20 reaches the set amount (measurement step), the spiral 21 is retracted to a specific position, and the molding material is placed in the injection step of the next cycle to make the injection device 2 stand by. status. In the standby state, the ring 51 can also be moved axially rearward relative to the shaft portion 52 under the pressure of the molding material by rotating the screw 21 counterclockwise or advancing the screw 21 in the axial direction. The end surface 51a of the ring 51 is brought into contact with the spacer 50 to block the gap between the outer circumferential surface of the spacer 50 and the inner hole 20b of the heating cylinder 20.
再者，與藉由射出裝置2使特定量之成形材料貯存於加熱筒20之前方之成形材料之計量步驟同時，例如將模具之溫度冷卻至成為40℃左右(較理想為35～50℃之範圍)，直至於前一週期中將成形材料填充至模穴32中且成形品成為穩定之形狀為止(成形品之冷卻步驟)。即，成形材料之計量步驟與成形品之冷卻步驟之一部分重疊而同時進行。一般而言，多為成形品之冷卻步驟較成形材料之計量步驟花費更多時間之情形。因此，射出裝置2於計量步驟之後為待機狀態，直至成形品之冷卻步驟完成為止。Further, at the same time as the step of measuring the molding material before the specific amount of the molding material is stored in the heating cylinder 20 by the injection device 2, for example, the temperature of the mold is cooled to about 40 ° C (preferably 35 to 50 ° C). The range is until the molding material is filled into the cavity 32 in the previous cycle and the molded article has a stable shape (cooling step of the molded article). That is, the measuring step of the molding material and the cooling step of the molded article are partially overlapped and simultaneously performed. In general, it is often the case that the cooling step of the molded article takes more time than the measuring step of the shaped material. Therefore, the injection device 2 is in a standby state after the metering step until the cooling step of the molded article is completed.
若成形品之冷卻步驟完成，則藉由鎖模裝置4自固定模30將可動模31脫模而開模，自成形模具3中取出成形品，其後，藉由鎖模裝置4將可動模31相對於固定模30閉模而鎖模，使加熱筒之噴嘴與固定模進行噴嘴觸碰，使螺旋21沿軸向前進而將貯存於加熱筒20前方之特定量之成形材料射出填充至模穴32內。於射出填充時，環51藉由成形材料之壓力而相對於軸部52相對地朝軸向後方移動，環51之後端面51a抵接於間隔件50而將間隔件50之外周面與加熱筒20之內孔20b之間之間隙堵塞，防止成形材料之逆流。When the cooling step of the molded article is completed, the movable mold 31 is released from the fixed mold 30 by the mold clamping device 4 to mold the mold, and the molded product is taken out from the forming mold 3, after which the movable mold is removed by the mold clamping device 4. 31 is closed with respect to the fixed mold 30 to mold the mold, so that the nozzle of the heating cylinder and the fixed mold are in contact with the nozzle, so that the spiral 21 advances in the axial direction, and a certain amount of the molding material stored in front of the heating cylinder 20 is injected and filled into the mold. Within the hole 32. When the filling is performed, the ring 51 is relatively moved rearward in the axial direction relative to the shaft portion 52 by the pressure of the molding material, and the end surface 51a of the ring 51 abuts against the spacer 50 to surround the outer circumferential surface of the spacer 50 with the heating cylinder 20. The gap between the inner holes 20b is blocked to prevent backflow of the molding material.
此時之射出速度可設為20～90 mm/sec(更理想為30～70 mm/sec)。此處，一般之射出成形中之射出速度為100 mm/sec左右。相對於此，本實施形態中，以較一般之射出成形中之射出速度慢的射出速度射出。如此，藉由使包含玻璃纖維之成形材料之射出速度較一般之射出成形中之射出速度慢而可防止玻璃纖維之折損，從而可成形含有所設定之長度之玻璃纖維之成形品。The injection speed at this time can be set to 20 to 90 mm/sec (more preferably 30 to 70 mm/sec). Here, the injection speed in general injection molding is about 100 mm/sec. On the other hand, in this embodiment, it is emitted at an injection speed which is slower than the injection speed in the normal injection molding. By making the injection speed of the glass fiber-containing molding material slower than the injection speed in the normal injection molding, the glass fiber can be prevented from being broken, and the molded article containing the glass fiber of the predetermined length can be formed.
再者，熱塑性樹脂除聚丙烯外，亦可使用聚乙烯、聚醯胺、聚縮醛、聚對苯二甲酸乙二酯等結晶性樹脂、或GPPS(general purpose polystyrene，通用級聚苯乙稀)或HIPS(High Impact polystyrene，耐衝擊性聚苯乙烯)等或AS(acrylonitrile-styrene，丙烯腈-苯乙烯)、ABS(acrylonitrile-butadiene-styrene，丙烯腈-丁二烯-苯乙烯)等苯乙烯系樹脂、丙烯酸、聚碳酸酯等非晶性樹脂。Further, in addition to the polypropylene, the thermoplastic resin may be a crystalline resin such as polyethylene, polyamine, polyacetal or polyethylene terephthalate, or GPPS (general purpose polystyrene). Or HIPS (High Impact polystyrene) or benzene such as AS (acrylonitrile-styrene) or ABS (acrylonitrile-butadiene-styrene) An amorphous resin such as a vinyl resin, acrylic acid or polycarbonate.
又，尤其成形作為成形品之家電用零件之情形時之成形材料亦有將作為熱塑性樹脂之苯乙烯系樹脂、與作為強化纖維之玻璃纖維組合之情形。該情形時，定義為苯乙烯系樹脂之熔點之熔融溫度為100℃。假定該熔融溫度與玻璃轉移溫度Tg大致相同，可將該熔融溫度加上80～140℃所得之180～240℃設定為加熱筒20及汽缸頭22(除噴嘴22a外)之最高溫度。而且，該最高加熱溫度可設為帶式加熱器23中除加熱筒20與噴嘴22a外設置於汽缸頭22之最前方或自最前方起第2號位置之帶式加熱器23a之設定溫度。In addition, in the case of molding a home appliance component as a molded article, a molding material may be used in combination with a styrene resin as a thermoplastic resin and a glass fiber as a reinforcing fiber. In this case, the melting temperature of the melting point of the styrene resin is defined as 100 °C. It is assumed that the melting temperature is substantially the same as the glass transition temperature Tg, and 180 to 240 ° C obtained by adding the melting temperature to 80 to 140 ° C can be set to the highest temperature of the heating cylinder 20 and the cylinder head 22 (excluding the nozzle 22a). Further, the maximum heating temperature may be set to a set temperature of the band heater 23a provided at the forefront of the cylinder head 22 or at the second position from the forefront except for the heating cylinder 20 and the nozzle 22a.
進而，強化纖維並不限定於玻璃纖維，亦可採用碳纖維、玻璃纖維與碳纖維之混合物等其他纖維。於採用碳纖維之情形時，較佳為其含有率為成形材料整體之10～60重量%(較佳為20～40重量%)，纖維長為2～30 mm(更佳為纖維長3～15 mm)，且纖維之直徑設為5～15 μm(較佳為7～8 μm)。本發明中，即便碳纖維之直徑較細為7～8 μm，亦可良好地分配混合。進而強化纖維亦可為再利用纖維。Further, the reinforcing fibers are not limited to glass fibers, and other fibers such as carbon fibers, a mixture of glass fibers and carbon fibers may be used. In the case of using carbon fibers, the content is preferably 10 to 60% by weight (preferably 20 to 40% by weight) based on the entire molding material, and the fiber length is 2 to 30 mm (more preferably, the fiber length is 3 to 15). Mm), and the diameter of the fiber is set to 5 to 15 μm (preferably 7 to 8 μm). In the present invention, even if the diameter of the carbon fibers is 7 to 8 μm, the mixing can be favorably distributed. Further, the reinforcing fibers may be recycled fibers.
進而，成形材料中，熱塑性樹脂材料與強化纖維占主要之比率，但亦有樹脂材料與強化纖維並非均為一種類之情形。進而，添加材除改質劑以外，亦有視需要而包含著色劑、潤滑劑、阻燃劑、穩定劑等之情形。 [實施例]Further, among the molding materials, the thermoplastic resin material and the reinforcing fiber account for a major ratio, but there are cases where both the resin material and the reinforcing fiber are not one type. Further, in addition to the modifier, the additive may contain a coloring agent, a lubricant, a flame retardant, a stabilizer, or the like as needed. [Examples]
此處，將上述構成總結如下。 1.利用預先設置於螺旋21之分配混合防逆流閥27之上游側之熔融促進部26，使自螺旋刮板部25輸送之成形材料之樹脂材料成為充分熔融之狀態，將該成形材料輸送至分配混合防逆流閥27，將已充分熔融之樹脂材料與強化纖維於分配混合防逆流閥27中分配混合。 2.將加熱筒20之與螺旋21之分配混合防逆流閥27之上游側之熔融促進部26對應之位置之前方前端側加熱至高出樹脂材料之熔點20～140℃。 3.將螺旋之旋轉速度設定為40～120/min，更佳為50～100/min-1，將螺旋之背壓設定為0～5 MPa。Here, the above configuration is summarized as follows. 1. The molten material promoting portion 26 provided on the upstream side of the distribution anti-backflow valve 27 of the spiral 21 is used to sufficiently melt the resin material of the molding material conveyed from the spiral blade portion 25, and the molding material is conveyed to the molten material. The mixed backflow prevention valve 27 is dispensed, and the sufficiently molten resin material and the reinforcing fibers are dispensed and mixed in the distribution mixing backflow prevention valve 27. 2. The front end side of the position corresponding to the melting promoting portion 26 on the upstream side of the upstream side of the anti-backflow valve 27 of the heating cylinder 20 is heated to a temperature higher than the melting point of the resin material by 20 to 140 °C. 3. Set the rotation speed of the spiral to 40 to 120/min, more preferably 50 to 100/min-1, and set the back pressure of the spiral to 0 to 5 MPa.
上述1～3之構成中，分別可與充分地熔融之狀態之成形材料一起，儘可能地防止強化樹脂之折損而輸送至分配混合防逆流閥，使強化纖維分配混合至樹脂材料中。因此，上述1～3之構成可適當單獨地或組合進行。In the above-described configurations of the first to third embodiments, the reinforcing resin is prevented from being damaged as much as possible, and is transported to the distribution and mixing backflow prevention valve as much as possible, and the reinforcing fibers are distributed and mixed into the resin material. Therefore, the configurations of the above 1 to 3 can be appropriately carried out individually or in combination.
1‧‧‧成形材料供給裝置1‧‧‧Forming material supply device
2‧‧‧射出裝置 2‧‧‧Injection device
3‧‧‧成形模具 3‧‧‧Forming mould
4‧‧‧鎖模裝置 4‧‧‧Clamping device
10‧‧‧進給裝置 10‧‧‧Feeding device
11‧‧‧重量計測機構 11‧‧‧ Weight measuring mechanism
12‧‧‧汽缸 12‧‧‧ cylinder
12a‧‧‧ 12a‧‧‧
13‧‧‧進給螺旋 13‧‧‧Feed spiral
14‧‧‧伺服馬達 14‧‧‧Servo motor
20‧‧‧加熱筒 20‧‧‧heating cylinder
20a‧‧‧落下孔 20a‧‧‧Down hole
20b‧‧‧內孔 20b‧‧‧ 内孔
21‧‧‧螺旋 21‧‧‧ spiral
21a‧‧‧軸部 21a‧‧‧Axis
22‧‧‧汽缸頭 22‧‧‧Cylinder head
22a‧‧‧噴嘴 22a‧‧‧Nozzles
23‧‧‧帶式加熱器(加熱機構) 23‧‧‧Band heater (heating mechanism)
23a‧‧‧帶式加熱器 23a‧‧‧Band heater
24‧‧‧滑道 24‧‧ ‧ slide
25‧‧‧螺旋刮板部 25‧‧‧Spiral scraper
26‧‧‧熔融促進部 26‧‧‧Met Promotion Department
26a‧‧‧突起 26a‧‧‧ Protrusion
27‧‧‧分配混合防逆流閥 27‧‧‧Distribution hybrid backflow valve
28‧‧‧螺旋頭 28‧‧‧Spiral head
28a‧‧‧止動部 28a‧‧‧Departure
29‧‧‧槽 29‧‧‧ slots
30‧‧‧固定模 30‧‧‧Fixed mode
31‧‧‧可動模 31‧‧‧ movable mold
32‧‧‧模穴 32‧‧‧ cavity
40‧‧‧固定盤 40‧‧‧ fixed disk
41‧‧‧可動盤 41‧‧‧ movable plate
42‧‧‧拉桿 42‧‧‧ lever
50‧‧‧間隔件 50‧‧‧ spacers
51‧‧‧防逆流閥部 51‧‧‧Anti-backflow valve department
51a‧‧‧後端面 51a‧‧‧ rear end face
52‧‧‧軸部 52‧‧‧Axis
53‧‧‧凹部 53‧‧‧ recess
54‧‧‧孔 54‧‧‧ hole
55‧‧‧空間 55‧‧‧ Space
A‧‧‧進給區 A‧‧‧Feeding area
B‧‧‧壓縮區 B‧‧‧Compressed area
C‧‧‧計量區 C‧‧‧Measuring area
圖1係表示本發明中使用之成形裝置之一實施形態之剖視圖。 圖2係表示本發明中使用之成形裝置之另一實施形態之剖視圖。Fig. 1 is a cross-sectional view showing an embodiment of a molding apparatus used in the present invention. Fig. 2 is a cross-sectional view showing another embodiment of the molding apparatus used in the present invention.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-151952 | 2017-08-04 | ||
| JP2017151952A JP6300997B1 (en) | 2017-08-04 | 2017-08-04 | Molding method of reinforced fiber-containing resin molded product |
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| Publication Number | Publication Date |
|---|---|
| TWI648143B true TWI648143B (en) | 2019-01-21 |
| TW201910094A TW201910094A (en) | 2019-03-16 |
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| TW107122043A TWI648143B (en) | 2017-08-04 | 2018-06-27 | Method for forming resin molded article containing reinforced fiber |
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| JP (1) | JP6300997B1 (en) |
| TW (1) | TWI648143B (en) |
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| JP7158526B1 (en) * | 2021-04-20 | 2022-10-21 | 株式会社日本製鋼所 | Material supply device for plasticization device and material supply method for plasticization device |
| CN115157607B (en) * | 2022-09-06 | 2022-11-18 | 湖南城通塑业科技有限公司 | Pipe extruder for buried high-voltage power cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454132A (en) * | 2006-05-25 | 2009-06-10 | 三菱工程塑料株式会社 | Moldings of fiber-reinforced thermoplastic resin |
| CN102958667A (en) * | 2010-10-29 | 2013-03-06 | 三菱重工塑胶科技股份有限公司 | Plasticizing screw for injection molding and injection molding method using same |
| JP2014087986A (en) * | 2012-10-30 | 2014-05-15 | Meiki Co Ltd | Apparatus and method for injection molding of resin material containing fiber material |
| JP2015157436A (en) * | 2014-02-25 | 2015-09-03 | アイシン精機株式会社 | Injection molding device and manufacturing method of fiber reinforced resin molded body |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3350211B2 (en) * | 1994-03-18 | 2002-11-25 | 株式会社神戸製鋼所 | Uniaxial plasticizing screw and plasticizing method using this screw |
| US5653534A (en) * | 1994-10-12 | 1997-08-05 | Sumitomo Chemical Company, Limited | Screw apparatus and method for supplying reinforcing fiber-containing molten resin using the apparatus |
| JPH09150436A (en) * | 1994-10-12 | 1997-06-10 | Sumitomo Chem Co Ltd | Injection method and injection apparatus for executing this method |
| JP2002248664A (en) * | 2001-02-27 | 2002-09-03 | Kishimoto Sangyo Co Ltd | Injection molding machine having kneading mechanism |
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2017
- 2017-08-04 JP JP2017151952A patent/JP6300997B1/en active Active
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- 2018-06-27 TW TW107122043A patent/TWI648143B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454132A (en) * | 2006-05-25 | 2009-06-10 | 三菱工程塑料株式会社 | Moldings of fiber-reinforced thermoplastic resin |
| CN102958667A (en) * | 2010-10-29 | 2013-03-06 | 三菱重工塑胶科技股份有限公司 | Plasticizing screw for injection molding and injection molding method using same |
| JP2014087986A (en) * | 2012-10-30 | 2014-05-15 | Meiki Co Ltd | Apparatus and method for injection molding of resin material containing fiber material |
| JP2015157436A (en) * | 2014-02-25 | 2015-09-03 | アイシン精機株式会社 | Injection molding device and manufacturing method of fiber reinforced resin molded body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6300997B1 (en) | 2018-03-28 |
| JP2019030977A (en) | 2019-02-28 |
| TW201910094A (en) | 2019-03-16 |
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