JP2015136841A - injection molding machine - Google Patents

injection molding machine Download PDF

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JP2015136841A
JP2015136841A JP2014009022A JP2014009022A JP2015136841A JP 2015136841 A JP2015136841 A JP 2015136841A JP 2014009022 A JP2014009022 A JP 2014009022A JP 2014009022 A JP2014009022 A JP 2014009022A JP 2015136841 A JP2015136841 A JP 2015136841A
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cooling medium
heating
cylinder
cooling
injection molding
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JP6158102B2 (en
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昌博 阿部
Masahiro Abe
昌博 阿部
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2014009022A priority Critical patent/JP6158102B2/en
Priority to CN201410464961.8A priority patent/CN104786449B/en
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    • 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
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • 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
    • B29C45/74—Heating or cooling of the injection unit
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an injection molding machine capable of reducing the time till the temperature of a cooling block reaches a set temperature.SOLUTION: Provided is an injection molding machine comprising a cylinder 41 of heating a molding material charged into a mold die and a flow passage 44a through which a cooling medium passes at the inside, and including a cooling block 44 of cooling the molding material feed port 41a of the cylinder, a cooling medium heating heater 51 of heating the cooling block, a feed tube heating heater 52, a cooling medium heating heat pipe 53 and a heating part 50 for a feed tube heating heat pipe 54 or the like, in which, by regulating the flow rate ratio of the cooling medium between the heating flow passage 46a and a bypass flow passage 46a, the temperature of the cooling block is regulated.

Description

本発明は、射出成形機に関する。   The present invention relates to an injection molding machine.

射出成形機は、金型装置内に充填される成形材料を加熱するシリンダ、およびシリンダの成形材料供給口を冷却する冷却ブロックを備える（例えば、特許文献１参照）。冷却ブロックの内部には冷却媒体（例えば冷却水）を流す流路が形成され、シリンダの成形材料供給口の温度は成形材料（例えば樹脂ペレット）が溶融しない温度に保たれる。成形材料供給口の目詰まりが防止できる。   The injection molding machine includes a cylinder that heats a molding material filled in a mold apparatus, and a cooling block that cools a molding material supply port of the cylinder (for example, see Patent Document 1). A flow path for flowing a cooling medium (for example, cooling water) is formed inside the cooling block, and the temperature of the molding material supply port of the cylinder is maintained at a temperature at which the molding material (for example, resin pellets) does not melt. Clogging of the molding material supply port can be prevented.

特開２００５−１０３８７５号公報JP 2005-103875 A

従来、例えば立ち上げ時に冷却ブロックの温度が設定温度になるのに時間がかかっていた。   Conventionally, for example, it takes time for the temperature of the cooling block to reach the set temperature at startup.

本発明は、上記課題に鑑みてなされたものであって、冷却ブロックの温度が設定温度になるまでの時間を短縮できる、射出成形機の提供を目的とする。   This invention is made | formed in view of the said subject, Comprising: It aims at provision of the injection molding machine which can shorten time until the temperature of a cooling block reaches preset temperature.

上記課題を解決するため、本発明の一態様によれば、
金型装置内に充填される成形材料を加熱するシリンダと、
冷却媒体が通る流路を内部に有し、前記シリンダの成形材料供給口を冷却する冷却ブロックと、
該冷却ブロックを加熱する加熱部とを備える、射出成形機が提供される。 In order to solve the above problems, according to one aspect of the present invention,
A cylinder for heating the molding material filled in the mold apparatus;
A cooling block that internally has a flow path through which a cooling medium passes, and cools the molding material supply port of the cylinder;
An injection molding machine including a heating unit that heats the cooling block is provided.

本発明の一態様によれば、冷却ブロックの温度が設定温度になるまでの時間を短縮できる、射出成形機が提供される。   According to one aspect of the present invention, an injection molding machine is provided that can shorten the time until the temperature of the cooling block reaches a set temperature.

本発明の一実施形態による射出成形機を示す断面図である。It is sectional drawing which shows the injection molding machine by one Embodiment of this invention.

以下、本発明を実施するための形態について図面を参照して説明するが、各図面において、同一の又は対応する構成については同一の又は対応する符号を付して説明を省略する。また、充填工程におけるスクリュの移動方向（図１において左方向）を前方、計量工程におけるスクリュの移動方向（図１において右方向）を後方として説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In each of the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof will be omitted. Further, the screw moving direction (left direction in FIG. 1) in the filling process is described as the front, and the screw moving direction (right direction in FIG. 1) in the weighing process is described as the rear.

図１は、本発明の一実施形態による射出成形機を示す断面図である。射出成形機１０は、シリンダ４１、ノズル４２、スクリュ４３、冷却ブロック４４、温度計４５、供給管４６、排出管４７、冷却器４８、加熱部５０、流量調整部６０、制御装置７０などを含む。   FIG. 1 is a cross-sectional view showing an injection molding machine according to an embodiment of the present invention. The injection molding machine 10 includes a cylinder 41, a nozzle 42, a screw 43, a cooling block 44, a thermometer 45, a supply pipe 46, a discharge pipe 47, a cooler 48, a heating unit 50, a flow rate adjusting unit 60, a control device 70, and the like. .

シリンダ４１は、金型装置内に充填される成形材料を加熱する。シリンダ４１の外周にはヒータなどの加熱源Ｈ１〜Ｈ４が設けられる。シリンダ４１の後部には成形材料供給口４１ａが形成され、成形材料供給口４１ａからシリンダ４１内に成形材料が供給される。   The cylinder 41 heats the molding material filled in the mold apparatus. Heat sources H <b> 1 to H <b> 4 such as a heater are provided on the outer periphery of the cylinder 41. A molding material supply port 41 a is formed in the rear portion of the cylinder 41, and the molding material is supplied into the cylinder 41 from the molding material supply port 41 a.

スクリュ４３は、シリンダ４１内において回転自在に且つ進退自在に配設される。計量工程では、スクリュ４３を回転させて、シリンダ４１内に供給された成形材料をスクリュ４３に形成される螺旋状の溝４３ａに沿って前方に送り、徐々に溶融させる。溶融させた成形材料がスクリュ４３の前方に送られ、シリンダ４１の前部に蓄積されるにつれ、スクリュ４３が後退させられる。スクリュ４３の前方に所定量の成形材料が蓄積すると、スクリュ４３の回転が停止され、計量工程が完了する。その後、充填工程では、スクリュ４３を前進させて、スクリュ４３の前方に蓄積された成形材料をシリンダ４１の前端に設けられるノズル４２から射出し、金型装置内に充填する。ノズル４２の外周にはヒータなどの加熱源Ｈ５が設けられてよい。   The screw 43 is disposed in the cylinder 41 so as to be rotatable and movable back and forth. In the measuring step, the screw 43 is rotated so that the molding material supplied into the cylinder 41 is fed forward along the spiral groove 43a formed in the screw 43 and gradually melted. As the molten molding material is fed to the front of the screw 43 and accumulated in the front portion of the cylinder 41, the screw 43 is retracted. When a predetermined amount of molding material is accumulated in front of the screw 43, the rotation of the screw 43 is stopped and the measuring process is completed. Thereafter, in the filling step, the screw 43 is advanced, and the molding material accumulated in front of the screw 43 is injected from the nozzle 42 provided at the front end of the cylinder 41 and filled into the mold apparatus. A heating source H5 such as a heater may be provided on the outer periphery of the nozzle 42.

スクリュ４３に形成される螺旋状の溝４３ａの深さは、一定でもよいし、場所によって異なってもよい。   The depth of the spiral groove 43a formed in the screw 43 may be constant or may vary depending on the location.

冷却ブロック４４は、冷却媒体が通る流路４４ａを内部に有する。冷却媒体は、冷却水などの液体、空気などの気体のいずれでもよい。冷却ブロック４４は、シリンダ４１の後部を挿入させる挿入孔を有し、シリンダ４１の後部に形成される成形材料供給口４１ａを冷却する。成形材料供給口４１ａの温度は成形材料（例えば樹脂ペレット）が溶融しない温度に保たれる。成形材料供給口４１ａの目詰まりが防止できる。   The cooling block 44 has a flow path 44a through which a cooling medium passes. The cooling medium may be a liquid such as cooling water or a gas such as air. The cooling block 44 has an insertion hole for inserting the rear portion of the cylinder 41, and cools the molding material supply port 41 a formed at the rear portion of the cylinder 41. The temperature of the molding material supply port 41a is maintained at a temperature at which the molding material (for example, resin pellets) does not melt. Clogging of the molding material supply port 41a can be prevented.

温度計４５は、冷却ブロック４４の温度を測定する。温度計４５は、冷却ブロック４４の温度を示す信号を制御装置７０に出力する。制御装置７０は、メモリなどの記憶部およびＣＰＵなどを有し、記憶部に記憶される制御プロクラムをＣＰＵに実行させることにより、冷却ブロック４４の温度が設定温度になるように、冷却器４８、加熱部５０、および流量調整部６０を制御してよい。   The thermometer 45 measures the temperature of the cooling block 44. The thermometer 45 outputs a signal indicating the temperature of the cooling block 44 to the control device 70. The control device 70 includes a storage unit such as a memory and a CPU. The control unit 70 causes the CPU to execute a control program stored in the storage unit, so that the temperature of the cooling block 44 becomes a set temperature. The heating unit 50 and the flow rate adjusting unit 60 may be controlled.

供給管４６は、冷却ブロック４４の外部から流路４４ａに冷却媒体を供給する。排出管４７は、流路４４ａから冷却ブロック４４の外部に冷却媒体を排出する。冷却器４８は、排出管４７から排出される冷却媒体を冷却して供給管４６に戻す。冷却器４８は、制御装置７０による制御下で、冷却媒体の温度が設定温度になるように冷却媒体を冷却してよい。   The supply pipe 46 supplies a cooling medium from the outside of the cooling block 44 to the flow path 44a. The discharge pipe 47 discharges the cooling medium from the flow path 44 a to the outside of the cooling block 44. The cooler 48 cools the cooling medium discharged from the discharge pipe 47 and returns it to the supply pipe 46. The cooler 48 may cool the cooling medium so that the temperature of the cooling medium becomes a set temperature under the control of the control device 70.

尚、本実施形態では、排出管４７から排出される冷却媒体を冷却して供給管４６に環流させるが、排出管４７から排出される冷却媒体を廃棄してもよい。この場合、冷却器４８は、冷却媒体の供給源に接続され、供給源から供給される冷却媒体を冷却して供給管４６に供給する。また、供給管４６は冷却器４８を介さずに供給源に接続されてもよい。   In this embodiment, the cooling medium discharged from the discharge pipe 47 is cooled and circulated to the supply pipe 46. However, the cooling medium discharged from the discharge pipe 47 may be discarded. In this case, the cooler 48 is connected to a supply source of the cooling medium, cools the cooling medium supplied from the supply source, and supplies the cooling medium to the supply pipe 46. Further, the supply pipe 46 may be connected to a supply source without passing through the cooler 48.

加熱部５０は、冷却ブロック４４を加熱する。シリンダ４１の熱だけでなく加熱部５０の熱によって冷却ブロック４４が加熱できる。よって、射出成形時に冷却ブロック４４の温度が設定温度に維持しやすく、成形品の品質が安定化する。また、冷却ブロック４４の温度が設定温度になるまでの時間が短縮できる。時間短縮の効果は、シリンダ４１と冷却ブロック４４との間に断熱材が配設される場合に顕著である。   The heating unit 50 heats the cooling block 44. The cooling block 44 can be heated not only by the heat of the cylinder 41 but also by the heat of the heating unit 50. Therefore, the temperature of the cooling block 44 is easily maintained at the set temperature during injection molding, and the quality of the molded product is stabilized. Further, the time until the temperature of the cooling block 44 reaches the set temperature can be shortened. The effect of shortening the time is remarkable when a heat insulating material is disposed between the cylinder 41 and the cooling block 44.

加熱部５０は、冷却媒体を加熱してよい。冷却ブロック４４の温度が設定温度になるように、冷却媒体を流路４４ａに連続的に供給しながら冷却媒体の温度が調整できる。冷却ブロック４４の温度が設定温度になるように冷却媒体を流路４４ａに間欠的に供給すると共にその供給時間を調整する場合に比べて、冷却ブロック４４の温度の安定性が良く、成形品の品質が安定化する。   The heating unit 50 may heat the cooling medium. The temperature of the cooling medium can be adjusted while continuously supplying the cooling medium to the flow path 44a so that the temperature of the cooling block 44 becomes the set temperature. Compared to the case where the cooling medium is intermittently supplied to the flow path 44a and the supply time is adjusted so that the temperature of the cooling block 44 becomes the set temperature, the temperature of the cooling block 44 is more stable and the molded product Quality stabilizes.

加熱部５０は、冷却媒体を加熱する目的で、冷却媒体加熱ヒータ５１、供給管加熱ヒータ５２、冷却媒体加熱ヒートパイプ５３、および供給管加熱ヒートパイプ５４を有してよい。   The heating unit 50 may include a cooling medium heater 51, a supply pipe heater 52, a cooling medium heating heat pipe 53, and a supply pipe heating heat pipe 54 for the purpose of heating the cooling medium.

冷却媒体加熱ヒータ５１は、冷却媒体と接触することにより冷却媒体を加熱するヒータである。冷却媒体加熱ヒータ５１は、例えばマイクロヒータであって、図１に示すように流路４４ａに配設されてよい。尚、冷却媒体加熱ヒータ５１は、供給管４６の内部に配設されてもよく、供給管４６の内部と流路４４ａの両方に配設されてもよい。   The cooling medium heater 51 is a heater that heats the cooling medium by contacting the cooling medium. The cooling medium heater 51 is a micro heater, for example, and may be disposed in the flow path 44a as shown in FIG. The cooling medium heater 51 may be disposed inside the supply pipe 46, or may be disposed both in the supply pipe 46 and in the flow path 44a.

供給管加熱ヒータ５２は、供給管４６を加熱することにより冷却媒体を加熱するヒータである。供給管加熱ヒータ５２は、例えばバンドヒータであって、供給管４６の外周に巻き付けられてよい。   The supply pipe heater 52 is a heater that heats the cooling medium by heating the supply pipe 46. The supply pipe heater 52 is a band heater, for example, and may be wound around the outer periphery of the supply pipe 46.

冷却媒体加熱ヒートパイプ５３は、シリンダ４１および冷却媒体と接触することによりシリンダ４１の熱を冷却媒体に伝えるヒートパイプである。ヒートパイプは、揮発性の作動液を内部に有し、作動液の蒸発および凝縮を利用して熱を移動させる。作動液はヒートパイプ内を循環する。   The cooling medium heating heat pipe 53 is a heat pipe that transfers the heat of the cylinder 41 to the cooling medium by contacting the cylinder 41 and the cooling medium. The heat pipe has a volatile working fluid therein, and moves heat using evaporation and condensation of the working fluid. The hydraulic fluid circulates in the heat pipe.

冷却媒体加熱ヒートパイプ５３は、シリンダ４１と、供給管４６内の冷却媒体とを熱的に接続する。尚、冷却媒体加熱ヒートパイプ５３は、シリンダ４１と、流路４４ａ内の冷却媒体とを熱的に接続してもよい。また、流路４４ａ内の冷却媒体とシリンダ４１とを熱的に接続するヒートパイプと、供給管４６内の冷却媒体とシリンダ４１とを熱的に接続するヒートパイプとが両方用いられてもよい。   The cooling medium heating heat pipe 53 thermally connects the cylinder 41 and the cooling medium in the supply pipe 46. The cooling medium heating heat pipe 53 may thermally connect the cylinder 41 and the cooling medium in the flow path 44a. Further, both a heat pipe that thermally connects the cooling medium in the flow path 44a and the cylinder 41 and a heat pipe that thermally connects the cooling medium in the supply pipe 46 and the cylinder 41 may be used. .

供給管加熱ヒートパイプ５４は、シリンダ４１および供給管４６と接触することによりシリンダ４１の熱を供給管４６を介して冷却媒体に伝えるヒートパイプである。   The supply pipe heating heat pipe 54 is a heat pipe that transmits heat of the cylinder 41 to the cooling medium via the supply pipe 46 by contacting the cylinder 41 and the supply pipe 46.

供給管４６は、冷却媒体加熱ヒートパイプ５３および供給管加熱ヒートパイプ５４によってシリンダ４１の熱を冷却媒体に伝える加熱流路４６ａと、加熱流路４６ａを迂回するバイパス流路４６ｂとを有してよい。加熱流路４６ａとバイパス流路４６ｂとは分岐点と合流点で接続される。   The supply pipe 46 includes a heating flow path 46a that transmits heat of the cylinder 41 to the cooling medium by the cooling medium heating heat pipe 53 and the supply pipe heating heat pipe 54, and a bypass flow path 46b that bypasses the heating flow path 46a. Good. The heating channel 46a and the bypass channel 46b are connected at a branch point and a junction.

尚、冷却媒体加熱ヒートパイプ５３がシリンダ４１と流路４４ａ内の冷却媒体とを熱的に接続する場合、流路４４ａが加熱流路とバイパス流路とを有してよい。   When the cooling medium heating heat pipe 53 thermally connects the cylinder 41 and the cooling medium in the flow path 44a, the flow path 44a may have a heating flow path and a bypass flow path.

流量調整部６０は、加熱流路４６ａとバイパス流路４６ｂとの間の冷却媒体の流量比を調整する。例えば、流量調整部６０は、ロータリー弁などの方向制御弁で構成され、冷却媒体の経路を加熱流路４６ａとバイパス流路４６ｂとの間で切り替える。冷却媒体は、加熱流路４６ａおよびバイパス流路４６ｂのいずれか一方のみを介して冷却ブロック４４内に供給される。よって、冷却ブロック４４の温度が調整できる。   The flow rate adjusting unit 60 adjusts the flow rate ratio of the cooling medium between the heating flow path 46a and the bypass flow path 46b. For example, the flow rate adjusting unit 60 includes a directional control valve such as a rotary valve, and switches the path of the cooling medium between the heating flow path 46a and the bypass flow path 46b. The cooling medium is supplied into the cooling block 44 through only one of the heating channel 46a and the bypass channel 46b. Therefore, the temperature of the cooling block 44 can be adjusted.

尚、本実施形態の冷却媒体は加熱流路４６ａおよびバイパス流路４６ｂのいずれか一方のみを介して冷却ブロック４４内に供給されるが、冷却媒体は両方を介して冷却ブロック４４内に供給されてもよい。この場合、加熱流路４６ａおよびバイパス流路４６ｂの少なくとも一方の途中に流量調整弁が設けられてよい。加熱流路４６ａとバイパス流路４６ｂとの間の冷却媒体の流量比が調整でき、冷却ブロック４４の温度が調整できる。   The cooling medium of the present embodiment is supplied into the cooling block 44 through only one of the heating flow path 46a and the bypass flow path 46b, but the cooling medium is supplied into the cooling block 44 through both. May be. In this case, a flow rate adjustment valve may be provided in the middle of at least one of the heating channel 46a and the bypass channel 46b. The flow rate ratio of the cooling medium between the heating flow path 46a and the bypass flow path 46b can be adjusted, and the temperature of the cooling block 44 can be adjusted.

加熱部５０は、冷却ブロック４４と接触することにより冷却ブロック４４を加熱してよい。加熱部５０は、冷却ブロック４４を加熱する目的で、冷却ブロック加熱ヒータ５５、および冷却ブロック加熱ヒートパイプ５６を有してよい。   The heating unit 50 may heat the cooling block 44 by contacting the cooling block 44. The heating unit 50 may include a cooling block heater 55 and a cooling block heating heat pipe 56 for the purpose of heating the cooling block 44.

冷却ブロック加熱ヒータ５５は、冷却ブロック４４と接触することにより冷却ブロック４４を加熱するヒータである。   The cooling block heater 55 is a heater that heats the cooling block 44 by contacting the cooling block 44.

冷却ブロック加熱ヒートパイプ５６は、シリンダ４１および冷却ブロック４４と接触することによりシリンダ４１の熱を冷却ブロック４４に伝えるヒートパイプである。   The cooling block heating heat pipe 56 is a heat pipe that transfers heat of the cylinder 41 to the cooling block 44 by contacting the cylinder 41 and the cooling block 44.

以上、射出成形機の実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内において、種々の変形、改良が可能である。   As mentioned above, although embodiment of the injection molding machine was described, this invention is not limited to the said embodiment, In the range of the summary of this invention described in the claim, various deformation | transformation and improvement are possible. Is possible.

例えば、上記実施形態の射出装置は、インライン・スクリュ方式であるが、プリプラ方式でもよい。プリプラ方式の射出装置は、可塑化シリンダ内で溶融された成形材料を射出シリンダに供給し、射出シリンダから金型装置内に成形材料を射出する。スクリュ・プリプラ方式では可塑化シリンダ内にスクリュが配設され、プランジャ・プリプラ方式では可塑化シリンダ内にプランジャが配設される。プリプラ方式の場合、冷却ブロックは可塑化シリンダを冷却する。   For example, the injection device of the above embodiment is an inline screw system, but may be a pre-plastic system. A pre-plastic injection device supplies a molding material melted in a plasticizing cylinder to the injection cylinder, and injects the molding material from the injection cylinder into a mold device. In the screw / prepa system, a screw is disposed in the plasticizing cylinder, and in the plunger / prepa system, a plunger is disposed in the plasticizing cylinder. In the case of the pre-plastic method, the cooling block cools the plasticizing cylinder.

また、上記実施形態では、冷却媒体加熱ヒータ５１、供給管加熱ヒータ５２、冷却媒体加熱ヒートパイプ５３、供給管加熱ヒートパイプ５４、冷却ブロック加熱ヒータ５５、および冷却ブロック加熱ヒートパイプ５６が用いられるが、これらの加熱手段は単独または任意の組合せで用いられてもよい。また、同じ種類の加熱手段が複数用いられてもよい。   In the above embodiment, the cooling medium heater 51, the supply pipe heater 52, the cooling medium heating heat pipe 53, the supply pipe heating heat pipe 54, the cooling block heating heater 55, and the cooling block heating heat pipe 56 are used. These heating means may be used alone or in any combination. A plurality of heating means of the same type may be used.

１０ 射出成形機
４１ シリンダ
４１ａ 成形材料供給口
４３ スクリュ
４４ 冷却ブロック
４４ａ 流路
４５ 温度計
４６ 供給管
４７ 排出管
４８ 冷却器
５０ 加熱部
５１ 冷却媒体加熱ヒータ
５２ 供給管加熱ヒータ
５３ 冷却媒体加熱ヒートパイプ
５４ 供給管加熱ヒートパイプ
５５ 冷却ブロック加熱ヒータ
５６ 冷却ブロック加熱ヒートパイプ
６０ 流量調整部
７０ 制御装置
Ｈ１〜Ｈ５ 加熱源 DESCRIPTION OF SYMBOLS 10 Injection molding machine 41 Cylinder 41a Molding material supply port 43 Screw 44 Cooling block 44a Channel 45 Thermometer 46 Supply pipe 47 Discharge pipe 48 Cooler 50 Heating part 51 Cooling medium heating heater 52 Supply pipe heating heater 53 Cooling medium heating heat pipe 54 Supply pipe heating heat pipe 55 Cooling block heating heater 56 Cooling block heating heat pipe 60 Flow rate adjusting unit 70 Controllers H1 to H5 Heating source

Claims (8)

金型装置内に充填される成形材料を加熱するシリンダと、
冷却媒体が通る流路を内部に有し、前記シリンダの成形材料供給口を冷却する冷却ブロックと、
該冷却ブロックを加熱する加熱部とを備える、射出成形機。 A cylinder for heating the molding material filled in the mold apparatus;
A cooling block that internally has a flow path through which a cooling medium passes, and cools the molding material supply port of the cylinder;
An injection molding machine comprising: a heating unit that heats the cooling block. 前記加熱部は、前記冷却媒体を加熱する、請求項１に記載の射出成形機。   The injection molding machine according to claim 1, wherein the heating unit heats the cooling medium. 前記加熱部は、前記冷却媒体と接触することにより前記冷却媒体を加熱するヒータを有する、請求項２に記載の射出成形機。   The injection molding machine according to claim 2, wherein the heating unit includes a heater that heats the cooling medium by contacting the cooling medium. 前記冷却ブロックの外部から前記流路に前記冷却媒体を供給する供給管を備え、
前記加熱部は、前記供給管を加熱することにより前記冷却媒体を加熱するヒータを有する、請求項２または３に記載の射出成形機。 A supply pipe for supplying the cooling medium to the flow path from the outside of the cooling block;
The injection molding machine according to claim 2, wherein the heating unit includes a heater that heats the cooling medium by heating the supply pipe. 前記加熱部は、前記シリンダおよび前記冷却媒体と接触することにより前記シリンダの熱を前記冷却媒体に伝えるヒートパイプを有する、請求項２〜４のいずれか１項に記載の射出成形機。   The injection molding machine according to any one of claims 2 to 4, wherein the heating unit includes a heat pipe that contacts the cylinder and the cooling medium to transmit heat of the cylinder to the cooling medium. 前記冷却ブロックの外部から前記流路に前記冷却媒体を供給する供給管を備え、
前記加熱部は、前記シリンダおよび前記供給管と接触することにより前記シリンダの熱を前記供給管を介して前記冷却媒体に伝えるヒートパイプを有する、請求項２〜５のいずれか１項に記載の射出成形機。 A supply pipe for supplying the cooling medium to the flow path from the outside of the cooling block;
The said heating part has a heat pipe which transmits the heat | fever of the said cylinder to the said cooling medium via the said supply pipe | tube by contacting the said cylinder and the said supply pipe | tube, The heat pipe of any one of Claims 2-5. Injection molding machine. ヒートパイプによって前記シリンダの熱を前記冷却媒体に伝える加熱流路と、該加熱流路を迂回するバイパス流路との間の前記冷却媒体の流量比を調整する流量調整部を備える、請求項５または６に記載の射出成形機。   6. A flow rate adjusting unit that adjusts a flow rate ratio of the cooling medium between a heating flow path that transmits heat of the cylinder to the cooling medium by a heat pipe and a bypass flow path that bypasses the heating flow path. Or the injection molding machine of 6. 前記加熱部は、前記冷却ブロックと接触することにより前記冷却ブロックを加熱する、請求項１〜７のいずれか１項に記載の射出成形機。   The injection molding machine according to any one of claims 1 to 7, wherein the heating unit heats the cooling block by contacting the cooling block.
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