TWI462817B - Mold for synthetic resin molding - Google Patents
Mold for synthetic resin molding Download PDFInfo
- Publication number
- TWI462817B TWI462817B TW099115376A TW99115376A TWI462817B TW I462817 B TWI462817 B TW I462817B TW 099115376 A TW099115376 A TW 099115376A TW 99115376 A TW99115376 A TW 99115376A TW I462817 B TWI462817 B TW I462817B
- Authority
- TW
- Taiwan
- Prior art keywords
- mold
- cavity
- nested
- molded article
- temperature
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
本發明係關於一種熱塑性樹脂或熱硬化性樹脂等之射出成形或壓縮成形等所使用之模具，為對模腔表面交互加熱冷卻之合成樹脂成形用模具。The present invention relates to a mold used for injection molding or compression molding of a thermoplastic resin or a thermosetting resin, and the like, and is a mold for molding a synthetic resin which alternately heats and cools the surface of a cavity.
作為有損成形品外觀品質之一，有產生熔接線之問題。熔接線係在將熔融樹脂填充至模具時，產生於從不同方向流過來之樹脂彼此前端合流之部分。因前端之熔融樹脂接觸模腔表面而在樹脂表面形成固化層之結果，即使完全地填充樹脂並施加保持壓力亦無法使模具表面充分轉印至樹脂合流部之固化層，成為微小V字狀之槽並殘留在表面。As one of the appearance qualities of the damaged molded article, there is a problem that a weld line is generated. When the molten resin is filled into the mold, the weld line is generated in a portion where the resins flowing from different directions merge with each other at the front end. As a result of the formation of a solidified layer on the surface of the resin due to the contact of the molten resin at the front end with the surface of the cavity, even if the resin is completely filled and the holding pressure is applied, the surface of the mold cannot be sufficiently transferred to the cured layer of the resin merging portion, and becomes a micro V shape. The groove remains on the surface.
此外，此處所謂「外觀」係指成形品之表面狀態、亦即成形品之表觀，「外觀品質良好」係意指由於模具表面至樹脂之固化層之轉印良好，因此成形品表面狀態之設計性美觀優異。In addition, the term "appearance" as used herein means the surface state of the molded article, that is, the appearance of the molded article, and "good appearance quality" means that the surface of the molded article is good because the transfer from the surface of the mold to the cured layer of the resin is good. The design is excellent in appearance.
例如，以圖17及圖18所示之習知模具3形成圖9所示之存在有多數個開口部2之成形品1時，從澆口4經由澆道5自閘門6填充至模腔空間7之熔融樹脂，被形成開口部2之芯部8切斷，由於樹脂從芯部8在樹脂流動方向之下游側合流，因此產生圖19所示之熔接線9。For example, when the molded article 1 having a plurality of openings 2 shown in FIG. 9 is formed by the conventional mold 3 shown in FIG. 17 and FIG. 18, it is filled from the gate 4 through the gate 5 to the cavity space via the gate 6. The molten resin of 7 is cut by the core portion 8 in which the opening portion 2 is formed, and since the resin merges from the core portion 8 on the downstream side in the resin flow direction, the weld line 9 shown in Fig. 19 is generated.
此成形品之材質係聚碳酸脂(透明)，成形品尺寸為縱100mm×橫50mm×厚1.2mm，模具具有側閘門一個閘門。The material of the molded product was polycarbonate (transparent), and the molded article had a size of 100 mm in length × 50 mm in width × 1.2 mm in thickness, and the mold had one gate of the side gate.
為了抑制熔接線之產生，將熔融樹脂填充至模具及在填充後施加保持壓力時預先提升模具溫度即可，但提升模具溫度，在接下來之冷卻步驟即需要相對應之時間，其結果，成形週期變長。再者，由於成形品無法充分冷卻，因此在從模具脫模時產生缺陷。In order to suppress the generation of the weld line, the molten resin is filled into the mold and the mold temperature is raised in advance when the holding pressure is applied after the filling, but the mold temperature is raised, and the corresponding cooling time requires a corresponding time, and as a result, the forming is performed. The cycle becomes longer. Further, since the molded article cannot be sufficiently cooled, defects are generated when the mold is released from the mold.
因此，以下揭示各種僅在將熔融樹脂填充至模具之期間對模具之模腔表面進行加熱之方式。Therefore, various ways of heating the cavity surface of the mold only during filling of the molten resin into the mold are disclosed below.
A.冷熱水切換方式A. Hot and cold water switching mode
此方式係使熱水與冷水交互流過模具溫度調節用水管以調節溫度(參照專利文獻1、專利文獻2及專利文獻3)。In this manner, hot water and cold water are alternately flowed through the water pipe for mold temperature adjustment to adjust the temperature (see Patent Document 1, Patent Document 2, and Patent Document 3).
此方式之優點在於，能使用在一般規格之模具，且附帶設備之投資較少。The advantage of this method is that it can be used in general-purpose molds, and the investment in the attached equipment is less.
此方式之缺點在於，由於模具溫度調節用水管之位置與模具表面分離，因此溫度之上升、下降緩慢，且由於加熱溫度之上限為攝氏160度，因此對玻璃轉移溫度較高之樹脂無法獲得充分效果。The disadvantage of this method is that since the position of the water pipe for mold temperature adjustment is separated from the surface of the mold, the temperature rises and falls slowly, and since the upper limit of the heating temperature is 160 degrees Celsius, the resin having a high glass transition temperature cannot be sufficiently obtained. effect.
B.冷熱切換方式(蒸氣加熱式)B. Hot and cold switching mode (steam heating type)
此方式係使蒸氣與冷水交互流過模具溫度調節用流路以調節溫度(參照專利文獻4及專利文獻5)。In this manner, the vapor and the cold water are alternately flowed through the mold temperature adjustment flow path to adjust the temperature (see Patent Document 4 and Patent Document 5).
此方式之優點在於，模具表面溫度之上升較熱水快，且由於使介質流過之回路密集，因此模具表面之溫度差較小。The advantage of this method is that the surface temperature of the mold rises faster than hot water, and the temperature difference of the surface of the mold is small because the circuit through which the medium flows is dense.
此方式之缺點在於，由於模具表面溫度之上限為攝氏155度，因此使用樹脂受到限制，鍋爐或介質切換裝置等生產設備非常高價，即使以密封劑加以密封模具亦會生鏽，由於為以肋部支承分割之嵌套之構造，因此必須要有維持模具強度之厚度，而無法將流路設置於模具表面附近。The disadvantage of this method is that since the upper limit of the surface temperature of the mold is 155 degrees Celsius, the use of the resin is limited, and the production equipment such as the boiler or the medium switching device is very expensive, even if the sealing mold is used to seal the mold, it will rust, because it is ribbed. The portion supports the nested structure of the division, and therefore it is necessary to have a thickness for maintaining the strength of the mold, and it is not possible to arrange the flow path near the surface of the mold.
C.模具表面隔熱方式C. mold surface insulation method
此方式係在模具表面設置陶瓷等之薄膜隔熱層，藉由使樹脂與模具之熱傳導變差以延遲冷卻固化(參照專利文獻6)。In this method, a thin film heat insulating layer such as ceramic is provided on the surface of the mold, and the heat conduction between the resin and the mold is deteriorated to delay the cooling and solidification (see Patent Document 6).
此方式之優點在於，不需導入新的生產設備，且由於表面被覆，因此不需對模具直接加工。The advantage of this method is that there is no need to introduce new production equipment, and because the surface is covered, there is no need to directly process the mold.
此方式之缺點在於，由於模具表面溫度之上升較小，因此熔接線不會消失，無法對外觀面模腔進行追加加工，且無法控制模具表面溫度。The disadvantage of this method is that since the rise of the mold surface temperature is small, the weld line does not disappear, the additional processing of the mold cavity can not be performed, and the mold surface temperature cannot be controlled.
D.高頻感應加熱方式D. High frequency induction heating method
此方式係使電流流過位於接近模具表面之位置之電感器線圈以產生磁場，在模具表面產生電流，以其焦耳熱使溫度上升(參照專利文獻7)。This method causes a current to flow through an inductor coil located at a position close to the surface of the mold to generate a magnetic field, generates a current on the surface of the mold, and raises the temperature with Joule heat (refer to Patent Document 7).
此方式之優點在於，能使模具表面成為充分高溫(攝氏250度以上亦可)，模具表面溫度之上升較快，且由於從外部加熱，因此不需對模具加工。The advantage of this method is that the surface of the mold can be sufficiently heated (or above 250 degrees Celsius), the temperature of the surface of the mold rises rapidly, and since it is heated from the outside, it is not necessary to process the mold.
此方式之缺點在於，由於無法對電感器線圈間之間隙進行加熱，因此模具表面之溫度偏差較大，無法製作與複雜之模腔形狀一致之電感器線圈，且由於成形步驟中無法加熱，因此成形週期變長。The disadvantage of this method is that since the gap between the inductor coils cannot be heated, the temperature deviation of the surface of the mold is large, and it is impossible to produce an inductor coil that conforms to the shape of a complicated cavity, and since it cannot be heated in the forming step, The forming cycle becomes longer.
E.輻射加熱方式E. Radiation heating method
此方式係在開模中以鹵素燈照射模具表面(參照專利文獻8)。In this manner, the mold surface is irradiated with a halogen lamp in the mold opening (refer to Patent Document 8).
此方式之優點在於，由於從外部照射，因此不需對模具加工。The advantage of this method is that the mold is not processed because it is irradiated from the outside.
此方式之缺點在於，模具表面之溫度上升費時，且無法對應模具表面之高低差。The disadvantage of this method is that the temperature rise of the mold surface is time consuming and cannot correspond to the height difference of the mold surface.
F.通電加熱方式F. Electric heating method
此方式係使用在模具表面被覆絕緣層、接著在其上被覆導電層之模具，設置直接電極進行通電以發熱(參照專利文獻9)。In this method, a mold in which an insulating layer is coated on a surface of a mold and then a conductive layer is coated thereon is used, and a direct electrode is provided to conduct electricity to generate heat (see Patent Document 9).
此方式之優點在於，溫度上升較快，能使模具表面溫度成為高溫(攝氏250度以上)，幾乎不需對模具加工。The advantage of this method is that the temperature rises faster, and the surface temperature of the mold becomes a high temperature (above 250 degrees Celsius), and the mold processing is hardly required.
此方式之缺點在於，由於電流通過電極間之最短距離，因此無法均勻發熱。The disadvantage of this method is that since the current passes through the shortest distance between the electrodes, it is not possible to uniformly heat up.
G.匣加熱器方式G.匣heater mode
此方式係藉由設於模具之匣加熱器對模具加熱(參照專利文獻10及專利文獻11)。In this method, the mold is heated by a crucible heater provided in a mold (see Patent Document 10 and Patent Document 11).
此方式之優點在於，能將模具保持在高溫，且容易設置。The advantage of this method is that the mold can be kept at a high temperature and is easy to set.
此方式之缺點在於，模具溫度之改變費時(一般而言，成形週期中無法調節溫度)，對具有高低差之模具表面無法均勻加熱(由於匣加熱器不容易彎曲)，且為了減少加熱差需要增加加熱器數量。The disadvantage of this method is that the change of the mold temperature is time consuming (generally, the temperature cannot be adjusted in the forming cycle), the surface of the mold having the difference in height cannot be uniformly heated (because the crucible heater is not easily bent), and in order to reduce the difference in heating Increase the number of heaters.
雖任一方式皆有優缺點，但使冷熱用介質流過模具之方式或將匣加熱器***至模具之方式中，必需在模具形成冷熱用介質之流路或加熱器之***孔，但由於習知進行之從外壁之鑽孔器之孔加工僅能設置直線流路或加熱器，因此對具有凹凸之立體形狀之模腔表面無法形成均勻之距離，無法對模腔表面溫度均勻加熱。Although either method has advantages and disadvantages, it is necessary to form a flow path for the cold and hot medium or a heater insertion hole in the manner in which the hot and cold medium flows through the mold or inserts the crucible heater into the mold, but Conventionally, the hole machining from the outer wall of the drill can only be provided with a straight flow path or a heater. Therefore, a uniform distance cannot be formed on the surface of the cavity having a three-dimensional shape with irregularities, and the surface temperature of the cavity cannot be uniformly heated.
為了避免孔加工上之限制引起之上述問題，將嵌套分割成複數個以形成立體回路亦可，但介質為流體時為了防止介質本身之洩漏，必需將流路整體加以密封。然而，由於密封面成為嵌套無法抵接之面，因此無法支承嵌套而無法確保充分之模具強度。又，在此嵌套分割，若在離模腔表面4mm以下之面進行切削加工，則會產生加工變形之另一問題。In order to avoid the above problems caused by the limitation of the hole processing, it is also possible to divide the nest into a plurality of pieces to form a three-dimensional circuit. However, in order to prevent the leakage of the medium itself when the medium is a fluid, it is necessary to seal the entire flow path. However, since the sealing surface is a surface that cannot be abutted by the nesting, it is impossible to support the nesting and it is not possible to ensure sufficient mold strength. Further, if the cutting is performed here, if the cutting is performed on a surface of 4 mm or less from the surface of the cavity, another problem of machining deformation occurs.
以流體加熱時，在回路之入口與出口產生溫度差。又，由於加熱器加熱中無法密集配置加熱器，因此會有產生溫度偏差之問題。When heated by a fluid, a temperature difference is created at the inlet and outlet of the circuit. Further, since the heater cannot be densely arranged during heating of the heater, there is a problem that temperature deviation occurs.
在離模腔表面4mm以下之距離設置寬度4mm以上之介質流路或加熱器***孔所需之空間部時，與該空間部相當之模腔表面因模具內樹脂之成形壓力而彎曲，因此在樹脂成形品表面產生光澤偏差，外觀品質產生缺陷。When a medium flow path having a width of 4 mm or more or a space portion required for the heater insertion hole is provided at a distance of 4 mm or less from the surface of the cavity, the cavity surface corresponding to the space portion is bent by the molding pressure of the resin in the mold, and thus A gloss deviation occurs on the surface of the resin molded article, and the appearance quality is defective.
為了回避上述問題，必需在離模腔表面4mm以上之位置設置介質流路或加熱器***孔所需之空間部，但由於從加熱介質至模腔表面之距離與熱傳遞之關係，模腔表面溫度之升溫時間變慢。In order to avoid the above problem, it is necessary to provide a space portion required for the medium flow path or the heater insertion hole at a position 4 mm or more from the surface of the cavity, but the cavity surface is due to the relationship between the distance from the heating medium to the cavity surface and the heat transfer. The temperature rise time is slower.
由於使成形品外觀之缺點之熔接線消失，即不需為了隱藏熔接線而進行之化妝塗裝，因此作為降低成本之方法，係受到高度期待之長年之課題。Since the weld line which causes the defect of the appearance of the molded article disappears, that is, the cosmetic coating for hiding the weld line is not required, the method for reducing the cost has been highly anticipated for many years.
作為上述課體之解決手段，已知使模具之表面溫度升溫至較通常高以使熔接線之槽深變淺，接著升溫至材料固有之溫度以使熔接線消失。然而，使模具溫度恆在高溫狀態，則在成形品表面為軟質之狀態下從模具突出，此時產生成形品變形之問題。因此，必需使樹脂之填充中及保持壓力加壓中為高溫、突出時為樹脂硬化狀態之溫度。As a solution to the above-described course, it is known to raise the surface temperature of the mold to a relatively high level so that the groove depth of the weld line becomes shallow, and then raise the temperature to the temperature inherent to the material to make the weld line disappear. However, when the temperature of the mold is kept at a high temperature, the surface of the molded article is soft from the mold, and the molded article is deformed. Therefore, it is necessary to set the temperature of the resin to be high during the filling of the resin and to maintain the pressure of the resin.
因此，謀求在射出成形加工之一個週期中加熱冷卻模具表面之溫度調節技術，雖提出上述各種方法，但皆有缺點導致無法成為確定之技術而普及，此為現狀。Therefore, the temperature adjustment technique for heating and cooling the surface of the mold in one cycle of the injection molding process has been proposed. However, various methods have been proposed, and there are disadvantages in that it cannot be used as a technique for determination.
又，合成樹脂成形品之成形中，重要之問題在於，除了上述成形品之外觀品質之問題外，尚有如何控制樹脂之收縮狀態產生之影響至成形品內部之成形品之彎曲之問題。Further, in the molding of the synthetic resin molded article, there is an important problem that, in addition to the problem of the appearance quality of the molded article, there is a problem of how to control the influence of the shrinkage state of the resin to the bending of the molded article in the molded article.
樹脂成形品之彎曲控制，有要求製作成與設計圖尺寸完全一致之尺寸或容許誤差內之尺寸之情形(避免彎曲產生)、及考慮該成形品與其他零件之組裝作業性而在特定方向故意賦予一定程度之彎曲之情形(故意賦予彎曲)。The bending control of the resin molded article is required to be made in a size that is exactly the same as the size of the design or the size within the tolerance (to avoid bending), and deliberate in a specific direction in consideration of the assembly workability of the molded article and other parts. Give a certain degree of bending (deliberately imparting bending).
作為彎曲之改善方法，已知將在與閉模方向相同方向產生之彎曲，使用二台模具溫度調節器使固定模具與可動模具成為不同溫度，以固定模具成形品面與可動模具成形品面之收縮差調整彎曲量。As a method of improving the bending, it is known that the bending is generated in the same direction as the mold closing direction, and the two mold temperature adjusters are used to make the fixed mold and the movable mold have different temperatures to fix the mold forming surface and the movable mold forming surface. The difference in contraction adjusts the amount of bending.
然而，此方法，由於模具整體恆為具有溫度差之狀態，因此會有模具之熱膨脹之差導致固定模具與可動模具產生磨痕而破損之問題。因此，無法達到可充分調整彎曲量之溫度差。又，對與閉模方向垂直方向產生之彎曲並無有效改善方法，此為現狀。However, in this method, since the entire mold is always in a state of temperature difference, there is a problem that the difference in thermal expansion of the mold causes scratches and breakage of the fixed mold and the movable mold. Therefore, the temperature difference in which the amount of bending can be sufficiently adjusted cannot be achieved. Further, there is no effective improvement method for the bending generated in the direction perpendicular to the mold closing direction, which is the current state of the art.
如上述，習知任一模具技術之彎曲控制中，皆不易必要充分且確實地進行。因此，工廠之生產線上，必需由作業員親手對成形品施加修正操作，此徒手作業成為生產線整體之生產效率改善時之障礙。超過修正操作界線之成形品成為不良品而不得不廢棄，因此視成形對象之成形品之形狀構造，會有成形加工之產率非常差之情形。As described above, in the bending control of any of the conventional die technologies, it is not always necessary to carry out sufficiently and surely. Therefore, in the production line of the factory, it is necessary for the operator to personally apply the correcting operation to the molded product, and this freehand operation becomes an obstacle to the improvement of the production efficiency of the entire production line. Since the molded article exceeding the correction operation boundary is a defective product and has to be discarded, the shape of the molded article to be molded may have a very poor yield in the forming process.
本案發明人，如專利文獻12所揭示，提出一種將電熱器接近配置於模腔表面之合成樹脂成形用模具，但至當時為止之研究開發，雖可達成成形品之外觀品質之改善效果，但無法達成成形品之彎曲控制。本發明係根據之後之研究開發所得之經驗而完成者。As disclosed in Patent Document 12, the inventors of the present invention have proposed a synthetic resin molding die in which an electric heater is placed close to a surface of a cavity. However, research and development up to that time have been achieved to improve the appearance quality of a molded article. The bending control of the molded article cannot be achieved. The present invention has been completed based on the experience gained from subsequent research and development.
專利文獻1：日本特開平09-314628號公報Patent Document 1: Japanese Patent Publication No. 09-314628
專利文獻2：日本特開平10-100156號公報Patent Document 2: Japanese Patent Laid-Open No. Hei 10-100156
專利文獻3：日本特開平11-115013號公報Patent Document 3: Japanese Patent Laid-Open No. Hei 11-115013
專利文獻4：日本特開2001-18229號公報Patent Document 4: Japanese Patent Laid-Open Publication No. 2001-18229
專利文獻5：日本特開2002-316341號公報Patent Document 5: Japanese Laid-Open Patent Publication No. 2002-316341
專利文獻6：日本特開2002-172655號公報Patent Document 6: Japanese Laid-Open Patent Publication No. 2002-172655
專利文獻7：日本特開平10-80938號公報Patent Document 7: Japanese Patent Laid-Open No. Hei 10-80938
專利文獻8：日本特開2000-238104號公報Patent Document 8: Japanese Laid-Open Patent Publication No. 2000-238104
專利文獻9：日本特開平04-265720號公報Patent Document 9: Japanese Laid-Open Patent Publication No. 04-265720
專利文獻10：日本特開平08-230005號公報Patent Document 10: Japanese Patent Publication No. 08-230005
專利文獻11：日本特開2004-74629號公報Patent Document 11: Japanese Laid-Open Patent Publication No. 2004-74629
專利文獻12：日本專利第4052600號公報Patent Document 12: Japanese Patent No. 4052600
本發明之課題在於提供一種合成樹脂成形用模具，其不受模腔表面形狀之影響，可將電熱器必要充分地接近設置於模腔表面之任何部位，因此可無溫度上升偏差地將模具急速加熱至所需溫度，成形週期不會變長，可確實防止熔接線之產生(改善外觀品質)，且就成形品之各部位調整樹脂之收縮量，藉此確實進行彎曲控制。An object of the present invention is to provide a mold for molding a synthetic resin which is not affected by the shape of the surface of the cavity, and can sufficiently close the electric heater to any portion of the surface of the cavity, so that the mold can be rushed without temperature rise deviation. When the temperature is raised to a desired temperature, the molding cycle does not become long, and the occurrence of the weld line can be surely prevented (improving the appearance quality), and the amount of shrinkage of the resin is adjusted for each portion of the molded article, whereby the bending control is surely performed.
(1)本發明之合成樹脂成形用模具，係以具有模腔空間之嵌套與支承該嵌套之母模構成，將熔融樹脂填充至該模腔空間以形成轉印有模腔表面之成形品，其特徵在於：將模具之嵌套分割構成為具有模腔表面之嵌套表構件與不具有模腔表面之嵌套背構件，在該嵌套表構件，從該嵌套表構件之背面側朝向該模腔表面形成通過該模腔表面附近之部位之槽，在該嵌套背構件突設肋部，在該槽收容電熱器，當組裝該嵌套表構件與該嵌套背構件時，藉由嵌合於該槽之該肋部前端擠壓該電熱器以將該電熱器密合定位於該槽之最深部且將該電熱器區分成複數個系統設置；於該各嵌套設置以流有冷卻水之方式對各嵌套進行冷卻之冷卻媒介用流路；具備在包含有藉由該冷卻水之冷卻及藉由該電熱 器進行加熱之保壓冷卻步驟之整個成形週期中，對該各系統之電熱器個別進行通電控制以對各控制區域進行不同溫度控制之控制器部；該模腔，與該成形品之各部位之形狀或厚度對應，區分成待賦予溫度差之複數個控制區域；該控制器部，在使填充於該模具模腔空間中之熔融樹脂冷卻固化時，在該控制區域中，使抑制該成形品收縮之區域之該電熱器之加熱溫度，較促進該成形品收縮之區域為低，或者，使促進該成形品收縮之區域之該電熱器之加熱溫度，較抑制該成形品收縮之區域為高；將該控制區域間之溫度差，設定成同時調整在該成形品之閉模方向產生之彎曲與其垂直方向產生之彎曲之溫度差，且將該加熱溫度設定成防止該成形品之熔接線產生之溫度。(1) The mold for molding a synthetic resin of the present invention comprises a nest having a cavity space and a master mold supporting the nest, and a molten resin is filled into the cavity space to form a surface on which the cavity surface is transferred. The product is characterized in that the nesting of the mold is divided into a nested surface member having a cavity surface and a nested back member having no cavity surface, and the nested surface member is from the back of the nested surface member a side facing the surface of the cavity to form a groove passing through a portion near the surface of the cavity, and a rib is protruded in the nested back member, and an electric heater is received in the groove, when the nested table member and the nested back member are assembled Pressing the electric heater by the front end of the rib fitted to the groove to closely position the electric heater to the deepest part of the groove and divide the electric heater into a plurality of system settings; a flow path for a cooling medium that cools each nest by flowing cooling water; and is provided with cooling by the cooling water and by the electric heating During the entire forming cycle of the pressure-maintaining cooling step of heating, the controllers of the respective systems are individually energized to control the controllers for different temperature control of the respective control regions; the cavity and the parts of the molded article Corresponding to the shape or thickness, the plurality of control regions are divided into temperature differences; the controller portion suppresses the molding in the control region when the molten resin filled in the cavity of the mold cavity is cooled and solidified The heating temperature of the electric heater in the region where the product is contracted is lower than the region where the shrinkage of the molded article is promoted, or the heating temperature of the electric heater in the region where the shrinkage of the molded article is promoted is smaller than the region where the shrinkage of the molded article is suppressed. High; the temperature difference between the control regions is set to simultaneously adjust the temperature difference between the bending generated in the mold closing direction of the molded article and the bending generated in the vertical direction, and the heating temperature is set to prevent the welded wire of the molded product The temperature produced.
(2)上述(1)項之合成樹脂成形用模具，其中，該電熱器為變形自由度高之直徑4mm以下之細管加熱器。(2) The mold for molding a synthetic resin according to the above item (1), wherein the electric heater is a thin tube heater having a diameter of 4 mm or less having a high degree of freedom of deformation.
電熱器收容用之該槽，除了直線狀或曲線狀複數個並排形成外，如圖6及圖7所示，形成為一個或複數個漩渦狀或旋轉狀亦可，又，沿著該槽之行進方向賦予高低或段差以立體彎曲形成亦可。圖4所示之例中，複數個電熱器用槽全部配置於相同水平位準之位置，但如圖8或圖10所示，與成形品之形狀或厚度對應，將電熱器用槽之一部分或全部配置於不同水平位準之位置亦可。The groove for accommodating the electric heater may be formed in a plurality of spiral or rotating shapes as shown in FIG. 6 and FIG. 7 except that a plurality of linear or curved shapes are formed side by side, and along the groove. It is also possible to impart a high or low direction to the traveling direction or to form a three-dimensional bending. In the example shown in FIG. 4, a plurality of slots for the electric heaters are all disposed at the same level, but as shown in FIG. 8 or FIG. 10, part or all of the slots for the electric heater are corresponding to the shape or thickness of the molded article. It can also be placed at different levels.
成形用模腔，如圖11所示，與成形品之各部位之形狀或厚度對應，區分成待賦予溫度差之複數個加熱區域。電熱器，以該加熱區域為單位設置成複數個系統，各系統之 電熱器根據控制器部之設定，適當改變通電之電流量、通電時間、通電開始與通電停止之時序之條件以控制加熱量、加熱速度、升溫梯度。As shown in Fig. 11, the molding cavity is divided into a plurality of heating regions to be given a temperature difference corresponding to the shape or thickness of each portion of the molded article. The electric heater is arranged in a plurality of systems in units of the heating area, and each system The electric heater appropriately changes the current amount of energization, the energization time, and the timing of energization start and energization stop according to the setting of the controller unit to control the heating amount, the heating rate, and the temperature rise gradient.
上述(1)項記載發明之合成樹脂成形用模具，將模具之嵌套分割構成為具有模腔表面之嵌套表構件與不具有模腔表面之嵌套背構件，電熱器收容用之槽係藉由切削加工從該嵌套表構件之背面側朝向該模腔表面形成於該嵌套表構件，因此與從模具側面方向將匣加熱器之裝填孔直線狀穿孔之習知方式不同，該槽不受模腔表面形狀之影響，亦即，在模腔表面具有段差部或凹凸部或彎曲部之情形，沿著該段差部或凹凸部或彎曲部切削加工該槽，藉此可形成與模腔表面個別之具體形狀對應之最佳形態，在沿著該槽之長邊方向之任一部位，可將模腔表面與槽間之距離設定成相同。In the above-mentioned item (1), the mold for molding a synthetic resin according to the invention is characterized in that the nesting of the mold is divided into a nested surface member having a cavity surface and a nested back member having no cavity surface, and a tank for housing the electric heater. The nesting surface member is formed by cutting from the back side of the nested surface member toward the surface of the cavity, and thus is different from the conventional method of linearly perforating the filling hole of the crucible heater from the side surface of the mold. It is not affected by the shape of the surface of the cavity, that is, in the case where the surface of the cavity has a step portion or a concave portion or a curved portion, the groove is cut along the step portion or the concave portion or the curved portion, thereby forming a mold The specific shape corresponding to the specific shape of the cavity surface corresponds to the distance between the surface of the cavity and the groove at any position along the longitudinal direction of the groove.
又，在嵌套背構件突設肋部，在槽收容電熱器，當組裝嵌套表構件與嵌套背構件時，藉由嵌合於槽之該肋部前端擠壓電熱器，將電熱器以密合狀態定位保持於槽之最深部，藉此在模腔表面之任何部位皆設定相同之傳熱距離，因此可無溫度上升偏差地急速均勻加熱至所需溫度。Further, a rib is protruded from the nested back member, and an electric heater is housed in the groove. When the nested surface member and the nested back member are assembled, the electric heater is pressed by the front end of the rib fitted to the groove, and the electric heater is used. By positioning in the tightest state and holding it at the deepest part of the groove, the same heat transfer distance is set at any part of the cavity surface, so that it can be rapidly and uniformly heated to a desired temperature without a temperature rise deviation.
如上述，無溫度上升偏差地急速加熱模具之嵌套表構件與嵌套背構件，保持在所需之高溫，因此在從不同方向流過來之樹脂彼此前端合流之部分之樹脂表面不會形成固化層，可確實防止熔接線之產生，提升成形品之外觀品質。As described above, the nested surface member and the nested back member of the mold are rapidly heated without the temperature rise deviation, and are maintained at a desired high temperature, so that the resin surface of the portion where the resin flowing from the different directions merges with each other does not form a solidification. The layer can surely prevent the occurrence of weld lines and improve the appearance quality of the molded article.
根據上述(1)項記載發明之合成樹脂成形用模具，能使 模腔表面溫度成為攝氏250度以上之溫度，可急速加熱至合成樹脂之玻璃轉移溫度以上。又，藉由使電熱器之設置密度變密，可防止模腔表面溫度之偏差。不需要電源裝置以外之特別設備，可以低價構成成形裝置整體。由於可任意決定嵌套之厚度，可保持必要充分之模具強度。又，由於不使用加熱及冷卻介質，因此抗生鏽亦強。According to the above (1), the synthetic resin molding die of the invention can be The surface temperature of the cavity is at a temperature of 250 degrees Celsius or higher, and can be rapidly heated to a temperature above the glass transition temperature of the synthetic resin. Further, by making the setting density of the electric heater dense, it is possible to prevent the deviation of the surface temperature of the cavity. The special equipment other than the power supply unit is not required, and the entire molding apparatus can be constructed at a low price. Since the thickness of the nest can be arbitrarily determined, the necessary mold strength can be maintained. Moreover, since the heating and cooling medium are not used, the rust resistance is also strong.
又，電熱器收容用之該槽，只要使嵌套表構件與嵌套背構件分離，即可開放其全長，因此可簡單進行電熱器之補修或更換作業。Further, the groove for accommodating the heater can be opened by separating the nested table member from the nested back member, so that the repair or replacement of the electric heater can be easily performed.
又，上述(1)項記載發明之模具，在模具內設置複數個系統之電熱器，根據成形品之形狀或厚度等個別之具體形態，將成形用模腔區分成待賦予溫度差之複數個加熱區域，根據控制器部之條件設定使處理各加熱區域之系統之電熱器運轉，因此可將各加熱區域控制加熱至最佳溫度狀態，可避免彎曲產生或在所欲方向故意賦予彎曲。除了改善外觀品質外，可就各部位調整成形收縮量以簡單且確實進行彎曲控制。Further, in the above-mentioned (1), the mold of the invention is provided, and a plurality of electric heaters are provided in the mold, and the molding cavity is divided into a plurality of temperatures to be given a temperature difference depending on individual shapes such as the shape or thickness of the molded article. In the heating zone, the electric heaters of the system for processing each heating zone are operated according to the conditions of the controller section. Therefore, each heating zone can be controlled to be heated to an optimum temperature state, thereby avoiding bending or intentionally imparting bending in a desired direction. In addition to improving the appearance quality, the amount of molding shrinkage can be adjusted for each part to easily and surely perform bending control.
上述(1)項記載發明之模具之優點經詳細整理後，可歸納如下。The advantages of the mold of the invention described in the above item (1) can be summarized as follows.
(a)藉由複數個電熱器以區域單位進行不同之溫度控制，可動模具、固定模具之個別控制當然可達成，即使在各模具內亦可部分進行溫度控制。(a) Different temperature control is performed in a unit by a plurality of electric heaters, and individual control of the movable mold and the fixed mold can of course be achieved, and temperature control can be partially performed even in each mold.
(b)由於在嵌套直接設置電熱器，因此可在包含保壓冷卻中之整個成形週期連續進行溫度控制。(b) Since the electric heater is directly disposed in the nesting, the temperature control can be continuously performed throughout the forming cycle including the pressure maintaining cooling.
(c)可藉由模腔表面之溫度差部分調整成形收縮。(c) The forming shrinkage can be adjusted by the temperature difference portion of the cavity surface.
(d)使用玻璃轉移溫度以上之區域增加模腔表面之溫度差。(d) Increasing the temperature difference of the cavity surface using a region above the glass transition temperature.
(e)在成形收縮較大之部位，降低模腔表面溫度，在成形收縮較小之部位，提升模腔表面溫度，藉此消除成形收縮差以消除無需之彎曲。(e) In the portion where the forming shrinkage is large, the surface temperature of the cavity is lowered, and at the portion where the forming shrinkage is small, the surface temperature of the cavity is raised, thereby eliminating the difference in forming shrinkage to eliminate unnecessary bending.
(f)可藉由調整溫度差使彎曲產生於相反方向，考慮成形品與其他零件組合時之組裝狀況調整彎曲(故意賦予彎曲)。(f) The bending can be generated in the opposite direction by adjusting the temperature difference, and the bending is adjusted (deliberately imparting bending) in consideration of the assembly state when the molded article is combined with other components.
(g)可控制習知無法達成之與閉模方向垂直方向產生之彎曲。(g) It is possible to control the bending which is not achievable by the conventional method and which is perpendicular to the direction of the closed mold.
(h)可藉由模腔表面溫度之條件設定同時調整閉模方向與其垂直方向之二方向同時產生之彎曲。(h) The bending of the simultaneous closing direction of the mold and the direction perpendicular to the vertical direction can be simultaneously adjusted by the condition of the surface temperature of the cavity.
上述(2)項記載發明之合成樹脂成形用模具，由於以變形自由度高之直徑4mm以下之細管加熱器構成該電熱器，因此即使模腔表面形狀為立體且高度不同，亦可將電熱器彎曲以***至該槽，因此能配合模腔表面形狀調整槽深度，能將立體模腔表面升溫至均勻溫度或任意溫度。In the mold for molding a synthetic resin according to the above aspect (2), the electric heater is configured by a thin tube heater having a diameter of 4 mm or less having a high degree of freedom of deformation. Therefore, even if the surface shape of the cavity is three-dimensional and the height is different, the electric heater can be used. The bending is inserted into the groove, so that the groove depth can be adjusted according to the shape of the cavity surface, and the surface of the three-dimensional cavity can be heated to a uniform temperature or an arbitrary temperature.
由於可彎曲設置電熱器，因此視成形品之形狀能以一個電熱器廣範圍進行升溫，價格較低。Since the electric heater can be bent, the shape of the molded product can be heated in a wide range of electric heaters at a low price.
由於電熱器容易彎曲，因此可設置於具有高低差之部分及自由曲面及側面，能相對模具表面設置成均勻距離。Since the electric heater is easily bent, it can be disposed at a portion having a height difference and a free curved surface and a side surface, and can be disposed at a uniform distance from the surface of the mold.
本發明之上述及其他特徵及優點，參照圖式從下述記載可更為明白。The above and other features and advantages of the present invention will become more apparent from the written description.
以下，根據圖示本發明之實施例進一步進行詳細說明，但本發明並不限於此。此外，對各圖中之相同元件賦予相同符號。Hereinafter, the details of the embodiments of the present invention will be further described, but the present invention is not limited thereto. In addition, the same elements in the respective drawings are denoted by the same reference numerals.
圖1至圖7係顯示上述(1)項記載發明之一實施例，模具10，與公知樹脂成形用模具相同，係以固定模具11與可動模具12構成(此外，連接於模具10之其他成形裝置部分之圖示予以省略)。1 to 7 show an embodiment of the invention according to the above item (1), and the mold 10 is formed of a fixed mold 11 and a movable mold 12 in the same manner as a known mold for molding a resin (in addition, other moldings connected to the mold 10) The illustration of the device section is omitted).
此模具10係用以形成圖9所示之成形品1般扁平之板狀成形品，因此模腔空間25形成為扁平空間。This mold 10 is used to form a flat plate-like molded article of the molded article 1 shown in Fig. 9, and thus the cavity space 25 is formed into a flat space.
固定模具11係藉由母模13與嵌套構成，該嵌套係分割構成為嵌套表構件15與嵌套背構件16。可動模具12係藉由母模14與嵌套構成，該嵌套係分割構成為嵌套表構件17與嵌套背構件18。The fixed mold 11 is constituted by a female mold 13 and a nest, and the nesting system is divided into a nested watch member 15 and a nested back member 16. The movable mold 12 is constituted by a female mold 14 and a nest, and the nesting system is divided into a nested watch member 17 and a nested back member 18.
在固定模具11之嵌套表構件15之平坦上面，於寬度方向形成相同深度之凹陷部，以可動模具12之嵌套表構件17之平坦下面(相當於模腔表面29之部分)閉合該凹陷部時，形成上述模腔空間25。On the flat surface of the nested surface member 15 of the fixed mold 11, recesses of the same depth are formed in the width direction, and the recess is closed by the flat underside of the nested surface member 17 of the movable mold 12 (corresponding to the portion of the cavity surface 29). At the time of the portion, the cavity space 25 is formed.
在固定模具11之嵌套表構件15，從平坦之下面側、亦即與模腔表面28相反側之面朝向模腔表面28，以等間隔、彼此平行且相同深度形成相對模腔表面28呈直角之複數個槽19。在可動模具12之嵌套表構件17，從平坦之上面側、亦即與模腔表面29相反側之面朝向模腔表面29，以等間 隔、彼此平行且相同深度形成相對模腔表面29呈直角之複數個槽20。In the nested surface member 15 of the fixed mold 11, from the flat lower side, that is, the side opposite to the cavity surface 28 toward the cavity surface 28, the opposing cavity surface 28 is formed at equal intervals, parallel to each other and the same depth. A plurality of slots 19 at right angles. In the nested surface member 17 of the movable mold 12, from the flat upper side, that is, the surface opposite to the cavity surface 29, toward the cavity surface 29, A plurality of grooves 20 are formed at right angles to the cavity surface 29, parallel to each other and at the same depth.
在固定模具11之嵌套背構件16之平坦上面側，以等間隔且彼此平行突出形成複數個肋部23，肋部23之配置間隔與上述槽19相同，肋部23之寬度尺寸為與上述槽19完全嵌合之尺寸，肋部23之突出長度係設定成較上述槽19之深度短電熱器21之外側直徑量。因此，當組裝固定模具11之嵌套表構件15與嵌套背構件16時，擠壓至上述肋部23前端之電熱器21係定位保持於上述槽19之最深部。On the flat upper side of the nested back member 16 of the fixed mold 11, a plurality of ribs 23 are formed at equal intervals and in parallel with each other, and the ribs 23 are disposed at the same interval as the groove 19, and the width of the rib 23 is the same as described above. The groove 19 is completely fitted, and the protruding length of the rib 23 is set to be shorter than the depth of the groove 19 by the outer diameter of the heater 21. Therefore, when the nested table member 15 of the fixed mold 11 and the nested back member 16 are assembled, the electric heater 21 pressed to the front end of the rib 23 is positioned and held at the deepest portion of the groove 19.
將該等槽19之最深部彼此連結而描繪之直線，與上述模腔表面28平行，收容於此之各電熱器21與模腔表面28間之距離，較佳為設定在4mm以下。A straight line drawn by connecting the deepest portions of the grooves 19 to each other is parallel to the cavity surface 28, and the distance between each of the electric heaters 21 and the cavity surface 28 accommodated therein is preferably set to be 4 mm or less.
如上述，藉由使電熱器21密合於固定模具11之嵌套表構件15，電熱器21之熱容易傳導至嵌套表構件15。As described above, by bringing the electric heater 21 into close contact with the nested watch member 15 of the fixed mold 11, the heat of the electric heater 21 is easily conducted to the nested watch member 15.
在可動模具12之嵌套背構件18之平坦下面側，以等間隔且彼此平行突出形成複數個肋部24，肋部24之配置間隔與上述槽20相同，肋部24之寬度尺寸為與上述槽20完全嵌合之尺寸，肋部24之突出長度係設定成較上述槽20之深度短電熱器22之外側直徑量。因此，當組裝可動模具12之嵌套表構件17與嵌套背構件18時，擠壓至上述肋部24前端之電熱器22係定位保持於上述槽20之最深部。On the flat lower side of the nested back member 18 of the movable mold 12, a plurality of ribs 24 are formed at equal intervals and in parallel with each other, and the ribs 24 are disposed at the same interval as the groove 20, and the width of the rib 24 is the same as described above. The groove 20 is completely fitted to the size, and the protruding length of the rib 24 is set to be shorter than the depth of the groove 20 by the outer diameter of the electric heater 22. Therefore, when the nested table member 17 of the movable mold 12 and the nested back member 18 are assembled, the electric heater 22 pressed to the front end of the rib 24 is positioned and held at the deepest portion of the groove 20.
將該等槽20之最深部彼此連結而描繪之直線，與上述模腔表面29平行，收容於此之各電熱器22與模腔表面29間之距離，較佳為設定在4mm以下。The straight line drawn by connecting the deepest portions of the grooves 20 to each other is parallel to the cavity surface 29, and the distance between each of the electric heaters 22 and the cavity surface 29 accommodated therein is preferably set to be 4 mm or less.
如上述，藉由使電熱器22密合於可動模具12之嵌套表構件17，電熱器22之熱容易傳導至嵌套表構件17。As described above, by bringing the electric heater 22 into close contact with the nested table member 17 of the movable mold 12, the heat of the electric heater 22 is easily conducted to the nested table member 17.
再者，如後述，電熱器21,22係區分成複數個系統，個別控制供應至各系統之電力。Further, as will be described later, the electric heaters 21 and 22 are divided into a plurality of systems, and the electric power supplied to each system is individually controlled.
圖8係顯示上述(1)項記載發明之另一實施例，模具，與公知樹脂成形用模具相同，係以固定模具與可動模具構成。此外，僅圖示嵌套部分，嵌套部分以外之圖示與連接於模具之其他成形裝置部分之圖示予以省略。Fig. 8 is a view showing another embodiment of the invention according to the above (1), wherein the mold is formed of a fixed mold and a movable mold, similarly to the known mold for molding a resin. Further, only the nested portion is illustrated, and the illustrations other than the nested portion and the other portions of the forming device connected to the mold are omitted.
模具係用以形成彎曲之板狀成形品，因此模腔空間25形成為向上凸之彎曲空間。The mold is used to form a curved plate-shaped molded article, so that the cavity space 25 is formed as an upward convex curved space.
固定模具係藉由母模與嵌套構成，該嵌套係分割構成為嵌套表構件15與嵌套背構件16。可動模具係藉由母模與嵌套構成，該嵌套係分割構成為嵌套表構件17與嵌套背構件18。The fixed mold is constituted by a master mold and a nest, and the nest system is divided into a nested watch member 15 and a nested back member 16. The movable mold is constituted by a master mold and a nest, and the nesting system is divided into a nested watch member 17 and a nested back member 18.
在固定模具之嵌套表構件15之上面中央之彎曲面部分，於寬度方向形成相同深度之凹陷部，以可動模具之嵌套表構件17之下面中央部之彎曲模腔表面29閉合該凹陷部時，形成上述模腔空間25。The concave portion at the center of the upper surface of the nested surface member 15 of the fixed mold is formed with the same depth in the width direction, and the concave portion is closed by the curved cavity surface 29 at the lower central portion of the nested surface member 17 of the movable mold. At this time, the above-described cavity space 25 is formed.
在固定模具之嵌套表構件15，從平坦之下面側、亦即與模腔表面28相反側之面朝向模腔表面28，以等間隔且彼此平行往上方向形成複數個槽19。In the nested surface member 15 of the fixed mold, a plurality of grooves 19 are formed at equal intervals and parallel to each other in the upward direction from the flat lower side, that is, the surface opposite to the cavity surface 28 toward the cavity surface 28.
該等槽19之深度，係設定成將各槽19之最深部彼此連結時描繪之彎曲線成為與上述模腔表面28平行之彎曲線。亦即，以槽19與上述模腔表面28之間之距離在複數 個槽19全部相同之方式形成槽19。The depth of the grooves 19 is set so that the curved line drawn when the deepest portions of the grooves 19 are connected to each other is a curved line parallel to the cavity surface 28 of the cavity. That is, the distance between the groove 19 and the cavity surface 28 is plural The slots 19 are all formed in the same manner.
收容於各槽19之各電熱器21與模腔表面28間之距離，較佳為設定在4mm以下。如上述，藉由使電熱器21密合於固定模具之嵌套表構件15，電熱器21之熱容易傳導至嵌套表構件15。The distance between each of the electric heaters 21 housed in each of the grooves 19 and the cavity surface 28 is preferably set to be 4 mm or less. As described above, by bringing the electric heater 21 into close contact with the nested watch member 15 of the fixed mold, the heat of the electric heater 21 is easily conducted to the nested watch member 15.
在可動模具之嵌套表構件17，從平坦之上面側、亦即與模腔表面29相反側之面朝向模腔表面29，以等間隔且彼此平行往下方向形成複數個槽20。In the nesting table member 17 of the movable mold, a plurality of grooves 20 are formed at equal intervals and parallel to each other in the downward direction from the flat upper side, that is, the surface opposite to the cavity surface 29 toward the cavity surface 29.
該等槽20之深度，係設定成將各槽20之最深部彼此連結時描繪之彎曲線成為與上述模腔表面29平行之彎曲線。亦即，以槽20與上述模腔表面29之間之最短距離在複數個槽20全部相同之方式形成槽20。The depth of the grooves 20 is set so that the curved line drawn when the deepest portions of the grooves 20 are connected to each other is a curved line parallel to the cavity surface 29. That is, the groove 20 is formed in such a manner that the shortest distance between the groove 20 and the cavity surface 29 is the same in all of the plurality of grooves 20.
在固定模具之嵌套背構件16之平坦上面側，以等間隔且彼此平行突出形成複數個肋部23，肋部23之配置間隔與上述槽19相同，肋部23之寬度尺寸為與上述槽19完全嵌合之尺寸。On the flat upper side of the nested back member 16 of the fixed mold, a plurality of ribs 23 are formed at equal intervals and parallel to each other, and the ribs 23 are disposed at the same intervals as the above-mentioned grooves 19, and the width of the ribs 23 is the same as the above-mentioned grooves 19 fully fitted size.
該等肋部23之突出長度，係設定成將各肋部23之前端部彼此連結時描繪之彎曲線成為與上述模腔表面28平行之彎曲線。亦即，以肋部23與上述模腔表面28之間之最短距離在複數個肋部23全部相同之方式形成肋部23。The protruding length of the ribs 23 is set so that the bending line drawn when the front ends of the ribs 23 are connected to each other is a bending line parallel to the cavity surface 28 of the cavity. That is, the rib 23 is formed in such a manner that the shortest distance between the rib 23 and the cavity surface 28 is the same in all of the plurality of ribs 23.
在任一肋部23，肋部23之突出長度係設定成較位於對應位置之上述槽19之深度短電熱器21之外側直徑量。因此，當組裝固定模具之嵌套表構件15與嵌套背構件16時，擠壓至上述肋部23前端之電熱器21係定位保持於上述槽 19之最深部。In any of the ribs 23, the protruding length of the ribs 23 is set to be shorter than the depth of the above-mentioned groove 19 at the corresponding position by the outer diameter of the electric heater 21. Therefore, when the nested table member 15 of the fixed mold and the nested back member 16 are assembled, the electric heater 21 extruded to the front end of the rib 23 is positioned and held in the above groove. The deepest part of 19.
收容於各槽19之各電熱器21與模腔表面28間之距離，較佳為設定在4mm以下。The distance between each of the electric heaters 21 housed in each of the grooves 19 and the cavity surface 28 is preferably set to be 4 mm or less.
如上述，藉由使電熱器21密合於固定模具之嵌套表構件15，電熱器21之熱容易傳導至嵌套表構件15。As described above, by bringing the electric heater 21 into close contact with the nested watch member 15 of the fixed mold, the heat of the electric heater 21 is easily conducted to the nested watch member 15.
在可動模具之嵌套背構件18之平坦下面側，以等間隔且彼此平行突出形成複數個肋部24，肋部24之配置間隔與上述槽20相同，肋部24之寬度尺寸為與上述槽20完全嵌合之尺寸。On the flat lower side of the nested back member 18 of the movable mold, a plurality of ribs 24 are formed at equal intervals and parallel to each other, and the ribs 24 are disposed at the same interval as the groove 20, and the width of the rib 24 is the same as the above groove 20 fully fitted size.
該等肋部24之突出長度，係設定成將各肋部24之前端部彼此連結時描繪之彎曲線成為與上述模腔表面29平行之彎曲線。亦即，以肋部24與上述模腔表面29之間之最短距離在複數個肋部24全部相同之方式形成肋部24。The protruding length of the ribs 24 is set such that the bending line drawn when the front ends of the ribs 24 are connected to each other is a bending line parallel to the cavity surface 29. That is, the ribs 24 are formed in such a manner that the shortest distance between the ribs 24 and the cavity surface 29 is the same in all of the plurality of ribs 24.
在任一肋部24，肋部24之突出長度係設定成較位於對應位置之上述槽20之深度短電熱器22之外側直徑量。因此，當組裝可動模具之嵌套表構件17與嵌套背構件18時，擠壓至上述肋部24前端之電熱器22係定位保持於上述槽20之最深部。In either of the ribs 24, the protruding length of the rib 24 is set to be shorter than the depth of the groove 20 at the corresponding position and the outer diameter of the electric heater 22. Therefore, when the nested table member 17 of the movable mold and the nested back member 18 are assembled, the electric heater 22 pressed to the front end of the rib 24 is positioned and held at the deepest portion of the groove 20.
收容於各槽20之各電熱器22與模腔表面29間之距離，較佳為設定在4mm以下。The distance between each of the electric heaters 22 housed in each of the grooves 20 and the cavity surface 29 is preferably set to be 4 mm or less.
如上述，藉由使電熱器22密合於固定模具之嵌套表構件17，電熱器22之熱容易傳導至嵌套表構件17。As described above, by bringing the electric heater 22 into close contact with the nested table member 17 of the fixed mold, the heat of the electric heater 22 is easily conducted to the nested table member 17.
再者，如後述，電熱器21,22係區分成複數個系統，個別控制供應至各系統之電力。Further, as will be described later, the electric heaters 21 and 22 are divided into a plurality of systems, and the electric power supplied to each system is individually controlled.
圖10係顯示上述(1)項記載發明之再一實施例，模具10係以固定模具11與可動模具12構成。連接於模具10之其他成形裝置部分之圖示予以省略。Fig. 10 is a view showing still another embodiment of the invention according to the above item (1), in which the mold 10 is constituted by a fixed mold 11 and a movable mold 12. The illustration of the other forming device portions connected to the mold 10 is omitted.
此模具10係用以形成如圖11之寬度方向縱截面圖所示，具有一側為最厚、而厚度朝相反側遞減之寬度方向截面之長棒狀成形品。藉由在寬度方向之縱截面垂直方向之開口部，切斷成窄幅部分1a與寬幅部分1b。This mold 10 is formed into a long rod-shaped molded article having a section in the width direction which is thickest on the one side and has a thickness in the opposite side as shown in the longitudinal direction of the width direction of Fig. 11 . The narrow portion 1a and the wide portion 1b are cut by the opening portion in the vertical direction of the longitudinal section in the width direction.
固定模具11係藉由母模13與嵌套構成，該嵌套係分割構成為嵌套表構件15與嵌套背構件16。可動模具12係藉由母模14與嵌套構成，該嵌套係分割構成為嵌套表構件17與嵌套背構件18。The fixed mold 11 is constituted by a female mold 13 and a nest, and the nesting system is divided into a nested watch member 15 and a nested back member 16. The movable mold 12 is constituted by a female mold 14 and a nest, and the nesting system is divided into a nested watch member 17 and a nested back member 18.
在固定模具11之嵌套表構件15之平坦上面，形成與成形品1之上述開口部對應之突起部，在可動模具12之嵌套表構件17之平坦下面，形成與上述部分1a,1b對應之凹陷部，閉合固定模具11與可動模具12時，形成模腔空間25。On the flat upper surface of the nested surface member 15 of the fixed mold 11, a projection corresponding to the opening of the molded article 1 is formed, and the flat portion of the nested surface member 17 of the movable mold 12 is formed to correspond to the above-mentioned portions 1a, 1b. The recessed portion forms a cavity space 25 when the fixed mold 11 and the movable mold 12 are closed.
在固定模具11之嵌套表構件15之平坦之下面，以等間隔、彼此平行且相同深度形成朝向模腔空間25呈直角之複數個槽19。在可動模具12之嵌套表構件17之平坦之上面側，以等間隔且彼此平行形成朝向模腔空間25呈直角之複數個槽20。該等槽20之深度係根據模腔空間25之截面形狀設定差異。Below the flatness of the nested watch member 15 of the fixed mold 11, a plurality of grooves 19 which are at right angles to the cavity space 25 are formed at equal intervals, parallel to each other and at the same depth. On the flat upper side of the nested watch member 17 of the movable mold 12, a plurality of grooves 20 which are formed at right angles to the cavity space 25 are formed at equal intervals and in parallel with each other. The depth of the grooves 20 is set according to the cross-sectional shape of the cavity space 25.
在固定模具11之嵌套背構件16之平坦上面，以等間隔且彼此平行突出形成複數個肋部23，肋部23之配置間隔 與上述槽19相同，肋部23之寬度尺寸為與上述槽19完全嵌合之尺寸，肋部23之突出長度相同，係設定成較上述槽19之深度短電熱器22之外側直徑量。因此，當組裝固定模具11之嵌套表構件15與嵌套背構件16時，擠壓至上述肋部23前端之電熱器22係定位保持於上述槽19之最深部。On the flat top surface of the nested back member 16 of the fixed mold 11, a plurality of ribs 23 are formed at equal intervals and parallel to each other, and the arrangement interval of the ribs 23 is formed. Similarly to the above-described groove 19, the width dimension of the rib 23 is completely fitting with the groove 19, and the protruding length of the rib 23 is the same, and is set to be shorter than the depth of the groove 19 by the outer diameter of the electric heater 22. Therefore, when the nested table member 15 of the fixed mold 11 and the nested back member 16 are assembled, the electric heater 22 pressed to the front end of the rib 23 is positioned and held at the deepest portion of the groove 19.
將該等槽19之最深部彼此連結而描繪之直線，與上述模腔空間25之內面平行，收容於此之各電熱器22與模腔空間25間之距離，較佳為設定在4mm以下。A straight line drawn by connecting the deepest portions of the grooves 19 to each other is parallel to the inner surface of the cavity space 25, and the distance between each of the electric heaters 22 and the cavity space 25 accommodated therein is preferably set to be 4 mm or less. .
如上述，藉由使電熱器22密合於固定模具11之嵌套表構件15，電熱器22之熱容易傳導至嵌套表構件15。As described above, by bringing the electric heater 22 into close contact with the nested watch member 15 of the fixed mold 11, the heat of the electric heater 22 is easily conducted to the nested watch member 15.
在可動模具12之嵌套背構件18之平坦下面，以等間隔且彼此平行突出形成複數個肋部24，肋部24之配置間隔與上述槽20相同，肋部24之寬度尺寸為與上述槽20完全嵌合之尺寸，肋部24之突出長度與模腔空間25之形狀對應在長度賦予差異。各肋部24之長度，係設定成較上述槽20之深度短電熱器21之外側直徑量。因此，當組裝可動模具12之嵌套表構件17與嵌套背構件18時，擠壓至上述肋部24前端之電熱器21係定位保持於上述槽20之最深部。A plurality of ribs 24 are formed at equal intervals and parallel to each other at a flat bottom of the nested back member 18 of the movable mold 12. The ribs 24 are disposed at the same interval as the groove 20, and the width of the rib 24 is the same as the groove. The size of the 20 fully fitted, the protruding length of the rib 24 corresponds to the shape of the cavity space 25 to give a difference in length. The length of each rib 24 is set to be shorter than the depth of the groove 20 by the outer diameter of the electric heater 21. Therefore, when the nested table member 17 of the movable mold 12 and the nested back member 18 are assembled, the electric heater 21 pressed to the front end of the rib 24 is positioned and held at the deepest portion of the groove 20.
將該等槽20之最深部彼此連結而描繪之直線，與上述模腔空間25之內面平行，收容於此之各電熱器21與模腔空間25之內面間之距離，較佳為設定在4mm以下。A straight line drawn by connecting the deepest portions of the grooves 20 to each other is parallel to the inner surface of the cavity space 25, and the distance between the respective electric heaters 21 and the inner surface of the cavity space 25 is preferably set. Below 4mm.
如上述，藉由使電熱器21密合於可動模具12之嵌套表構件17，電熱器21之熱容易傳導至嵌套表構件17。As described above, by bringing the electric heater 21 into close contact with the nested table member 17 of the movable mold 12, the heat of the electric heater 21 is easily conducted to the nested table member 17.
在任一實施例，電熱器21,22係依據成形品1之形狀 或厚度等個別具體形態設置於複數個系統，供應至各系統之電熱器21,22之電力，係藉由位於控制器部40之各系統所具備之可變變壓器或閘流器等控制裝置調節輸出，使用射出成形機之閉模訊號與計時器使成形週期與動作產生連動。In any embodiment, the electric heaters 21, 22 are in accordance with the shape of the molded article 1. The individual specific forms such as the thickness are set in a plurality of systems, and the electric power supplied to the electric heaters 21, 22 of the respective systems is regulated by a control device such as a variable transformer or a thyristor provided in each system of the controller unit 40. Output, using the mold closing signal of the injection molding machine and the timer to make the forming cycle and action.
除了調整模具10整體之溫度之模具溫度調節器以外，在固定模具11之嵌套背構件16設置冷卻介質流路26，在可動模具12之嵌套背構件18設置冷卻介質流路27，因此將使冷卻水流通之回路連接於上述冷卻介質流路26,27，藉由電磁閥進行冷卻水之開閉，可在任意時間進行各嵌套之冷卻。加熱時間之控制不僅可用計時器，藉由將溫度感測器組裝於模具亦可控制模具表面溫度。In addition to the mold temperature adjuster that adjusts the temperature of the entire mold 10, the cooling medium flow path 26 is provided in the nested back member 16 of the fixed mold 11, and the cooling medium flow path 27 is provided in the nested back member 18 of the movable mold 12, so The circuit through which the cooling water flows is connected to the cooling medium flow paths 26 and 27, and the cooling water is opened and closed by the electromagnetic valve, so that the cooling of each nest can be performed at any time. The heating time can be controlled not only by a timer, but also by adjusting the temperature of the mold surface by assembling the temperature sensor to the mold.
即使上述各嵌套表構件15,17之厚度為4mm以上之充分厚度，亦可以任意槽深設置電熱器21,22。因此，可獲得充分之模具強度，在機械加工時不會產生變形。Even if the thickness of each of the nested table members 15, 17 is a sufficient thickness of 4 mm or more, the heaters 21, 22 can be provided at any groove depth. Therefore, sufficient mold strength can be obtained, and deformation does not occur during machining.
藉由使上述各模腔25之內面與抵接於電熱器21,22之表面之上述各嵌套表構件15,17之槽19,20之底之距離為4mm以下，可縮短熱傳遞時間，可在短時間將模腔表面溫度升溫至既定溫度。此在升溫所需之熱能量較少時亦可達成，上述模腔25之冷卻亦可較快達成。上述各嵌套表構件15,17之槽19,20，係不會因模具內樹脂壓力產生彎曲之槽寬度之4mm以下。上述各嵌套表構件15,17，不需要電熱器21,22之設置用槽19,20以外之空間，由於作為模具構造強固，因此不需要補強對策。The heat transfer time can be shortened by making the inner surface of each of the cavities 25 and the bottom of the grooves 19, 20 of the nesting table members 15, 17 abutting the surfaces of the electric heaters 21, 22 4 mm or less. The surface temperature of the cavity can be raised to a predetermined temperature in a short time. This can also be achieved when the amount of heat energy required for the temperature rise is small, and the cooling of the cavity 25 can be achieved relatively quickly. The grooves 19, 20 of the nested table members 15, 17 described above are not to be 4 mm or less in the width of the curved groove due to the resin pressure in the mold. Each of the nested table members 15 and 17 does not require a space other than the installation grooves 19 and 20 of the electric heaters 21 and 22, and since it is strong as a mold structure, no countermeasure against reinforcement is required.
將電熱器21,22設置於上述各嵌套表構件15,17之槽19,20後，藉由以上述各嵌套背構件16,18之肋部23,24緊壓電熱器21,22以密合於上述各嵌套表構件15,17，沒有熱之傳遞損失，可高效率使模腔表面溫度升溫。After the heaters 21, 22 are disposed in the slots 19, 20 of the nested table members 15, 17 described above, the piezoelectric heaters 21, 22 are tightened by the ribs 23, 24 of the nested back members 16, 18 described above. In order to adhere to each of the nested surface members 15, 17 described above, there is no heat transfer loss, and the temperature of the cavity surface can be raised with high efficiency.
藉由使用控制回路不同之複數個電熱器21,22，可分別進行不同之溫度控制，可調整成形品外觀品質。By using a plurality of electric heaters 21, 22 having different control loops, different temperature control can be performed separately, and the appearance quality of the molded article can be adjusted.
使電熱器21,22之直徑為4mm以下之細者時，可將加熱器間之距離密集配置，能使模腔表面溫度均勻。又，即使是曲線部或具有高低差之部分亦可簡單徒手將其彎曲***。When the diameter of the electric heaters 21, 22 is 4 mm or less, the distance between the heaters can be densely arranged, and the surface temperature of the cavity can be made uniform. Moreover, even a curved portion or a portion having a height difference can be simply bent and inserted by hand.
根據本發明之上述模具內加熱器設置方式，能在短時間使模具溫度上升、下降，在樹脂流動及保持壓力中使樹脂之固化延遲。其原因在於，不僅是提升成形品外觀品質之效果，由於謀求樹脂流動性之提升，因此可形成習知填充不足厚度之成形品。According to the above-described in-mold heater setting method of the present invention, the mold temperature can be raised and lowered in a short time, and the curing of the resin can be delayed in the resin flow and the holding pressure. This is because it is not only an effect of improving the appearance quality of the molded article, but also an improvement in fluidity of the resin, so that a molded article having a conventionally insufficient thickness can be formed.
又，此效果在樹脂射出成形以外亦可獲得相同之效果，在使用擠壓熔融流體使其流動、以既定形狀冷卻固化為目的之模具之所有成形加工皆為有效之手段。Moreover, this effect can obtain the same effect in addition to resin injection molding, and is effective in all the forming processes of the mold for the purpose of cooling and solidifying by using a molten molten fluid.
(關於成形品之外觀品質改善之實驗例)(Experimental example of improvement in appearance quality of molded article)
將圖9所示之成形品1之實驗用模具10製作成圖1般，圖13係顯示以加熱器輸出1300W加熱模腔表面時之溫度變化之代表值。成形品1之材質係聚碳酸脂(透明)，成形品尺寸為縱100mm×橫50mm×厚1.2mm，模具具有側閘門一個閘門。The experimental mold 10 of the molded article 1 shown in Fig. 9 was produced in the same manner as in Fig. 1, and Fig. 13 is a graph showing the representative value of the temperature change when the heater output 1300 W to heat the surface of the cavity. The material of the molded article 1 is polycarbonate (transparent), and the molded article has a size of 100 mm in length × 50 mm in width × 1.2 mm in thickness, and the mold has one gate of the side gate.
從模具溫度調節器使攝氏90度之水通過模具整體以進行調溫，以電熱器(外管直徑：1.6mm、每單位長度之發熱量：975W/m、製造商：岡崎製作所股份有限公司、形式：H35微加熱器)加熱15秒可將模腔表面溫度提升至攝氏175度。From the mold temperature regulator, water of 90 degrees Celsius is passed through the mold to adjust the temperature to the electric heater (outer tube diameter: 1.6 mm, heat per unit length: 975 W/m, manufacturer: Okazaki Co., Ltd., Form: H35 Micro Heater) Heating for 15 seconds raises the cavity surface temperature to 175 degrees Celsius.
此外，本實驗例中，由於成形品1之形狀為平板狀之單純形狀，因此將重點置於外觀品質改善，在各部位一律進行電熱器之加熱，關於彎曲控制並不進行驗證。是以，在本發明為習知例。Further, in the present experimental example, since the shape of the molded article 1 is a flat shape, the focus is placed on the improvement of the appearance quality, and the heating of the electric heater is uniformly performed in each part, and the bending control is not verified. Therefore, the present invention is a conventional example.
成形之一個週期如下進行。One cycle of forming is performed as follows.
(1)與開模開始同時對電熱器通電以開始加熱。(1) At the same time as the start of mold opening, the electric heater is energized to start heating.
(2)與電熱器之加熱同時從模具取出成形品，關閉模具。(2) The molded article is taken out from the mold at the same time as the heating of the electric heater, and the mold is closed.
(3)閉模完成，對模具進行熔融樹脂之射出後，施加保持壓力。電熱器之加熱在閉模完成之階段或至保持壓力步驟結束之任意時間進行。(3) After the mold closing is completed, the mold is subjected to the injection of the molten resin, and the holding pressure is applied. The heating of the electric heater is performed at the stage of closing the mold or at any time until the end of the pressure maintaining step.
(4)保壓步驟後，開始冷卻步驟後開啟冷卻水用電磁閥，使冷卻水流過嵌套之冷卻用水管，將溫度降至加熱開始前之狀態。(4) After the pressure holding step, the cooling water solenoid valve is opened after the cooling step is started, and the cooling water flows through the nested cooling water pipe to lower the temperature to the state before the heating starts.
(5)成形之一個週期結束，返回(1)。(5) One cycle of forming ends and returns to (1).
本實驗例中，模腔表面為攝氏175度，高於成形樹脂之玻璃轉移溫度(在聚碳酸脂為攝氏144度)，因此即使熔融樹脂與模腔表面接觸亦不會完全固化，具有抑制熔接線之產生之效果。In this experimental example, the surface of the cavity is 175 degrees Celsius, which is higher than the glass transition temperature of the molding resin (144 degrees Celsius in polycarbonate), so that even if the molten resin is in contact with the surface of the cavity, it will not be completely cured, and the fusion welding can be suppressed. The effect of the line.
若以雷射顯微鏡測定以習知方式成形之成形品產生之 熔接線，熔接線之深度約5μm，熔接線之寬度約15μm，但若使用本實驗例之模具成形，可達到即使雷射顯微鏡亦無法測定熔接線之狀態。If a molded article formed by a conventional method is measured by a laser microscope For the weld line, the depth of the weld line is about 5 μm, and the width of the weld line is about 15 μm. However, if the mold is used in this experimental example, the state of the weld line cannot be measured even by a laser microscope.
(同時實施外觀品質改善成形與彎曲控制成形之實驗例)(Experimental example of performing appearance quality improvement forming and bending control forming)
本發明之模具，由於係將作為熱源之電熱器直接設置於模具內之構造，因此不僅在射出時、在保壓冷卻中亦可進行溫度控制。又，由於複數個加熱器獨立進行溫度控制，因此若在成形步驟中賦予溫度差則彎曲量產生變化。Since the mold of the present invention has a structure in which an electric heater as a heat source is directly disposed in the mold, temperature control can be performed not only at the time of injection but also during pressure-holding cooling. Further, since a plurality of heaters independently perform temperature control, if a temperature difference is given in the forming step, the amount of bending changes.
藉由圖10所示之模具成形之圖12所示之成形品，係同時實施無熔接成形(外觀品質改善成形)與彎曲控制成形之本發明之實施例。成形品形狀為長度168mm、寬度7.5mm、厚度0.7~2.2mm，在長邊兩端二個部位具有二個側閘門之閘門，成形樹脂為PMMA(聚甲基丙烯酸甲基)樹脂。The molded article shown in Fig. 12, which is formed by the mold shown in Fig. 10, is simultaneously subjected to the embodiment of the present invention without fusion forming (appearance quality improvement molding) and bending control molding. The molded article has a shape of 168 mm in length, 7.5 mm in width, and 0.7 to 2.2 mm in thickness, and has gates of two side gates at two ends of the long side, and the molding resin is PMMA (polymethyl methacrylate) resin.
此成形品1，係圖11之寬度方向之縱截面圖中施加斜線之寬度1.6mm之1a部與寬度3.2mm之1b部從包含側面之四面受到冷卻影響之形狀，此構成成形品整體之一半以上。In the longitudinal cross-sectional view in the width direction of Fig. 11, the 1a portion having a width of 1.6 mm and the 1b portion having a width of 3.2 mm are subjected to cooling from the four sides including the side surface, thereby constituting one half of the molded article as a whole. the above.
以CAE解析此點，1a部由於來自四面之冷卻效果，在高壓時進行固化因此收縮較少，1b部由於較1a部寬因此即使有來自側面之冷卻固化亦較緩慢，獲得收縮較多之結果。因此，可預測產生兩部1a,1b之收縮差導致之彎曲。因此，利用電熱器21,22之溫度控制，嘗試兩部1a,1b之 收縮差改善。This point is analyzed by CAE. Part 1a is solidified at a high pressure due to the cooling effect from the four sides, so that the shrinkage is less. The 1b portion is wider than the 1a portion, so that even if there is cooling from the side surface, the curing is slow, and the shrinkage is obtained. . Therefore, it is predicted that the bending caused by the difference in contraction between the two portions 1a, 1b is caused. Therefore, using the temperature control of the electric heaters 21, 22, try two parts 1a, 1b The difference in shrinkage is improved.
首先，以完成之模具進行通常成形，在圖16之彎曲方向+側產生0.3mm之彎曲，獲得與CAE解析具有匹配性之結果。接著，將圖10所示之電熱器21,22如圖11般區分成四個加熱區域(1)、(2)、(3)、(4)，藉由控制器部之設定變更，將條件變更成加熱區域(1)與加熱區域(3)以較低溫度加速冷卻固化以抑制收縮，加熱區域(2)與加熱區域(4)以較高溫度延遲冷卻固化以促進收縮，使彎曲產生位移，最後能使彎曲量成為0mm。成形之一個週期與上述實驗例大致相同。First, a normal molding was performed with the completed mold, and a bending of 0.3 mm was generated in the bending direction + side of Fig. 16 to obtain a result of matching with the CAE analysis. Next, the electric heaters 21, 22 shown in Fig. 10 are divided into four heating zones (1), (2), (3), and (4) as shown in Fig. 11, and the conditions are changed by the setting of the controller section. Change to the heating zone (1) and the heating zone (3) to accelerate the cooling and solidification at a lower temperature to suppress the shrinkage, and the heating zone (2) and the heating zone (4) are delayed to cool and solidify at a higher temperature to promote shrinkage and shift the bending. Finally, the amount of bending can be made 0mm. One cycle of forming is substantially the same as the above experimental example.
圖14係顯示模腔表面溫度記錄與成形步驟之關係的圖表。圖15之圖表係顯示各控制區域之模腔表面溫度記錄的實測值。此成為一邊維持無熔接(外觀品質改善)所需之高溫，一邊同時調整在閉模方向產生之彎曲與其垂直方向產生之彎曲之溫度差。再者，藉由使溫度差相反，亦可確認在圖16之彎曲方向-側產生彎曲。Figure 14 is a graph showing the relationship between the cavity surface temperature recording and the forming step. The graph of Figure 15 shows the measured values of the cavity surface temperature records for each control zone. This makes it possible to simultaneously adjust the temperature difference between the bending generated in the mold closing direction and the bending in the vertical direction while maintaining the high temperature required for the non-welding (improvement in appearance quality). Further, by making the temperature difference reversed, it was confirmed that the bending was caused in the bending direction side of Fig. 16 .
以上雖以本發明之實施形態說明本發明，但在未特別指定之情況下，上述說明皆未限定本發明，並未違背申請專利範圍記載之發明之精神與範圍，應可廣泛地加以解釋。The present invention has been described with reference to the embodiments of the present invention. However, the present invention is not limited by the scope of the invention.
本申請係根據2009年5月15日在日本申請發明之日本特願2009-119318號主張優先權，並將其內容作為本說明書記載之一部分。The present application claims priority on Japanese Patent Application No. 2009-119318, filed on Jan.
10‧‧‧模具10‧‧‧Mold
11‧‧‧固定模具11‧‧‧Fixed mould
12‧‧‧可動模具12‧‧‧ movable mold
13‧‧‧固定模具之母模13‧‧‧Mother of fixed molds
14‧‧‧可動模具之母模14‧‧‧Mother of movable molds
15‧‧‧固定模具之嵌套表構件15‧‧‧Folding table components for fixed molds
16‧‧‧固定模具之嵌套背構件16‧‧‧Folding backing members of fixed molds
17‧‧‧可動模具之嵌套表構件17‧‧‧ Nested table members of movable molds
18‧‧‧可動模具之嵌套背構件18‧‧‧Chasing back member of movable mold
19‧‧‧固定模具之嵌套表構件之槽19‧‧‧Slots of nested table members for fixed molds
20‧‧‧可動模具之嵌套表構件之槽20‧‧‧Slots of nested table members of movable molds
21‧‧‧固定模具之電熱器21‧‧‧Electrical heaters for fixed molds
22‧‧‧可動模具之電熱器22‧‧‧Electrical mold heater
23‧‧‧固定模具之嵌套背構件之肋部23‧‧‧Fixed ribs of nested back members
24‧‧‧可動模具之嵌套背構件之肋部24‧‧‧ ribs of nested back members of movable molds
25‧‧‧模腔空間25‧‧‧ cavity space
26‧‧‧固定模具之冷卻介質用流路26‧‧‧Flow path for cooling medium for fixed mold
27‧‧‧可動模具之冷卻介質用流路27‧‧‧Flow path for cooling medium of movable mold
28‧‧‧模腔表面28‧‧‧ cavity surface
29‧‧‧模腔表面29‧‧‧ cavity surface
40‧‧‧電熱器之控制器部40‧‧‧Electric controller controller
圖1係本發明一實施例之合成樹脂成形用模具的概略縱截面圖。Fig. 1 is a schematic longitudinal cross-sectional view showing a mold for molding a synthetic resin according to an embodiment of the present invention.
圖2係圖1之模具之嵌套部分之分離狀態的前視圖。Figure 2 is a front elevational view showing the separated state of the nested portion of the mold of Figure 1.
圖3係圖1之模具之嵌套部分之分離狀態的縱截面圖。Figure 3 is a longitudinal cross-sectional view showing the separated state of the nested portion of the mold of Figure 1.
圖4係圖1之模具之嵌套部分之組裝狀態的縱截面圖。Figure 4 is a longitudinal cross-sectional view showing the assembled state of the nested portion of the mold of Figure 1.
圖5係圖1之模具中可動模具之嵌套表構件的俯視圖。Figure 5 is a plan view of the nested watch member of the movable mold in the mold of Figure 1.
圖6係圖5之嵌套表構件的仰視圖。Figure 6 is a bottom plan view of the nested watch member of Figure 5.
圖7係圖5之嵌套表構件的右側視圖。Figure 7 is a right side view of the nested table member of Figure 5.
圖8係本發明另一實施例之合成樹脂成形用模具中嵌套部分之組裝狀態的縱截面圖。Fig. 8 is a longitudinal cross-sectional view showing an assembled state of a nested portion in a mold for molding a synthetic resin according to another embodiment of the present invention.
圖9係以圖1之模具成形之成形品的俯視圖。Fig. 9 is a plan view of a molded article formed by the mold of Fig. 1.
圖10係本發明再一實施例之合成樹脂成形用模具的概略縱截面圖。Fig. 10 is a schematic longitudinal cross-sectional view showing a mold for molding a synthetic resin according to still another embodiment of the present invention.
圖11係以圖10之模具成形之成形品之寬度方向的縱截面圖，一併記載各控制區域之加熱溫度範圍。Fig. 11 is a longitudinal cross-sectional view in the width direction of a molded article formed by the mold of Fig. 10, together with a heating temperature range of each control region.
圖12係以圖10之模具成形之成形品的前視圖。Fig. 12 is a front view of a molded article formed by the mold of Fig. 10.
圖13係顯示對圖1之模具進行外觀品質改善之實驗時模腔表面溫度記錄與成形步驟之關係的圖表。Fig. 13 is a graph showing the relationship between the cavity surface temperature recording and the forming step in the experiment of improving the appearance quality of the mold of Fig. 1.
圖14係顯示對圖10之模具進行外觀品質改善與彎曲控制之實驗時模腔表面溫度記錄與成形步驟之關係的圖表。Fig. 14 is a graph showing the relationship between the cavity surface temperature recording and the forming step in the experiment of improving the appearance quality and bending control of the mold of Fig. 10.
圖15係顯示對圖10之模具進行外觀品質改善與彎曲控制之實驗時各控制區域之模腔表面溫度記錄的圖表。Fig. 15 is a graph showing the cavity surface temperature recording of each control region in the experiment of improving the appearance quality and bending control of the mold of Fig. 10.
圖16係顯示彎曲方向之基準之成形品的前視圖。Fig. 16 is a front view showing a molded article showing a reference in the bending direction.
圖17係習知方式之合成樹脂成形用模具的概略俯視圖。Fig. 17 is a schematic plan view of a mold for molding a synthetic resin of a conventional method.
圖18係圖17之模具的概略縱截面圖。Figure 18 is a schematic longitudinal cross-sectional view of the mold of Figure 17.
圖19係以圖17之模具成形之成形品的俯視圖。Fig. 19 is a plan view showing a molded article formed by the mold of Fig. 17.
10．．．模具10. . . Mold
11．．．固定模具11. . . Fixed mold
12．．．可動模具12. . . Movable mold
13．．．固定模具之母模13. . . Fixed mold master
14．．．可動模具之母模14. . . Master mold of movable mold
15．．．固定模具之嵌套表構件15. . . Fixed mold nesting table member
16．．．固定模具之嵌套背構件16. . . Fixed mold nesting back member
17．．．可動模具之嵌套表構件17. . . Nested table member of movable mold
18．．．可動模具之嵌套背構件18. . . Nested back member of movable mold
19．．．固定模具之嵌套表構件之槽19. . . a slot for a nested table member of a fixed mold
20．．．可動模具之嵌套表構件之槽20. . . Slot of nested table member of movable mold
21．．．固定模具之電熱器twenty one. . . Fixed mold heater
22．．．可動模具之電熱器twenty two. . . Movable mold heater
23．．．固定模具之嵌套背構件之肋部twenty three. . . The rib of the nested back member of the fixed mold
24．．．可動模具之嵌套背構件之肋部twenty four. . . Rib of the nested back member of the movable mold
25．．．模腔空間25. . . Cavity space
26．．．固定模具之冷卻介質用流路26. . . Cooling medium flow path for fixing mold
27．．．可動模具之冷卻介質用流路27. . . Flow path for cooling medium of movable mold
28．．．模腔表面28. . . Cavity surface
29．．．模腔表面29. . . Cavity surface
40．．．電熱器之控制器部40. . . Controller unit of electric heater
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009119318A JP5261283B2 (en) | 2009-05-15 | 2009-05-15 | Mold for plastic molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201041709A TW201041709A (en) | 2010-12-01 |
| TWI462817B true TWI462817B (en) | 2014-12-01 |
Family
ID=43085054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW099115376A TWI462817B (en) | 2009-05-15 | 2010-05-14 | Mold for synthetic resin molding |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5261283B2 (en) |
| TW (1) | TWI462817B (en) |
| WO (1) | WO2010131681A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514124A (en) * | 2011-11-28 | 2012-06-27 | 蔡祥山 | Novel moveable heating type automatic heating and cooling device |
| CN104736316B (en) * | 2012-07-31 | 2017-05-24 | 3M创新有限公司 | Injection molding apparatus and method comprising a mold cavity surface comprising a thermally controllable array |
| JP6020822B2 (en) * | 2013-04-17 | 2016-11-02 | パナソニックＩｐマネジメント株式会社 | Injection mold and injection molding method |
| JP6688964B2 (en) * | 2016-03-03 | 2020-04-28 | パナソニックＩｐマネジメント株式会社 | Hot press molding method and hot press molding apparatus |
| CN110385815A (en) * | 2018-04-17 | 2019-10-29 | 张艳琛 | A kind of cold formed mold base workbench group of electromagnetic energy electrical heat energy steam energy thermoforming |
| CN114514284A (en) * | 2019-10-18 | 2022-05-17 | 本田技研工业株式会社 | Resin composition, resin molded article comprising same, and method for producing resin molded article |
| KR102568604B1 (en) * | 2022-08-22 | 2023-08-22 | 유한회사 가야미 | Manufacturing equipment of hydrogen storage vessel liner using rotational molding method |
| KR102613690B1 (en) * | 2023-08-17 | 2023-12-19 | 유한회사 가야미 | Manufacturing equipment of hydrogen storage vessel liner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007118213A (en) * | 2005-10-25 | 2007-05-17 | Yamashita Denki Kk | Mold for molding synthetic resin |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3895983B2 (en) * | 2001-12-21 | 2007-03-22 | 小野産業株式会社 | Synthetic resin molding die, manufacturing method thereof, and synthetic resin molding method |
| KR100644920B1 (en) * | 2005-03-24 | 2006-11-10 | 김동학 | Mold for injection molding machine |
| JP2006310020A (en) * | 2005-04-27 | 2006-11-09 | Toyota Motor Corp | Manufacturing method and manufacturing device of fuel cell separator |
-
2009
- 2009-05-15 JP JP2009119318A patent/JP5261283B2/en active Active
-
2010
- 2010-05-12 WO PCT/JP2010/058051 patent/WO2010131681A1/en active Application Filing
- 2010-05-14 TW TW099115376A patent/TWI462817B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007118213A (en) * | 2005-10-25 | 2007-05-17 | Yamashita Denki Kk | Mold for molding synthetic resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010264703A (en) | 2010-11-25 |
| TW201041709A (en) | 2010-12-01 |
| JP5261283B2 (en) | 2013-08-14 |
| WO2010131681A1 (en) | 2010-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4052600B2 (en) | Mold for plastic molding | |
| TWI462817B (en) | Mold for synthetic resin molding | |
| JP4740028B2 (en) | Hollow body forming equipment | |
| JP6744097B2 (en) | Injection mold and method of controlling injection mold | |
| JP4896556B2 (en) | Injection mold equipment | |
| JP6311873B2 (en) | Injection mold | |
| JP2012040847A (en) | Metal mold for molding | |
| KR20090101006A (en) | Core unit for preventing weldline and injection mold using the same | |
| JP6688964B2 (en) | Hot press molding method and hot press molding apparatus | |
| JP4674241B2 (en) | Method for heating molding mold and method for producing resin molded product | |
| JP4714491B2 (en) | Manufacturing method of resin molded product, mold for resin molding, plastic optical element and display device, and image forming apparatus | |
| JP2010105363A (en) | Temperature controller for molding die device, and molding die system | |
| KR100794503B1 (en) | Mold for processing polymer resin including selective heat insulation layer and molding method using which | |
| JP2009248423A (en) | Mold for injection molding and method of injection molding | |
| JP2011161786A (en) | Mold for molding synthetic resin and molding method | |
| JP2007008035A (en) | Mold assembly | |
| KR101069594B1 (en) | The heat exchanger to be eguipped in the Injection mold for fast heating and fast cooling | |
| JPH11291300A (en) | Mold for plastic injection molding, production thereof and injection molding method using mold | |
| JP4416159B2 (en) | Mold | |
| JP2012214041A (en) | Method for manufacturing resin molding using electromagnetic induction heating type mold apparatus for resin molding | |
| KR200461215Y1 (en) | Mold for molding comprising cartridge heater | |
| KR20080099756A (en) | Injection mold apparatus | |
| KR101113132B1 (en) | Mold system for molding comprising heating elements | |
| JP2014156019A (en) | Mold for producing synthetic resin product, and method for producing synthetic resin product | |
| KR20090029318A (en) | Quick heating and quick cooling for mold |