JPS59192542A - Injection molder - Google Patents

Injection molder

Info

Publication number
JPS59192542A
JPS59192542A JP6869783A JP6869783A JPS59192542A JP S59192542 A JPS59192542 A JP S59192542A JP 6869783 A JP6869783 A JP 6869783A JP 6869783 A JP6869783 A JP 6869783A JP S59192542 A JPS59192542 A JP S59192542A
Authority
JP
Japan
Prior art keywords
cylinder
injection
resin material
glass tube
melted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6869783A
Other languages
Japanese (ja)
Inventor
Norihisa Motokatsu
本勝　則久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6869783A priority Critical patent/JPS59192542A/en
Priority to US06/601,160 priority patent/US4600375A/en
Publication of JPS59192542A publication Critical patent/JPS59192542A/en
Pending legal-status Critical Current

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
    • B29C45/74—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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw

Landscapes

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

Abstract

PURPOSE:To enable a resin material to be melted in a short period of time, by providing in an injection cylinder an injection plunger for injecting a melted resin, and utilizing an infrared heater for melting the resin material. CONSTITUTION:A resin material in a hopper 20 is transmitted into a glass tubular cylinder 8 by rotating a feeding blade 18 by a motor 19. Thereafter, the resin material is heated and melted by infrared lamps and by opening a change- over valve 16 in a connecting block 14 the melted resin is transferred into an injection cylinder 15. Then by closing the change-over valve 16 and moving forward a plunger 17 of the injection cylinder 15, the melted resin is passed through a nozzle 12 to be injected. Thus since the resin material is melted by using the infrared lamps outside of the glass tubular cylinder 8, the period for melting the resin material is short and breaking of wire of the lamps occur less. Further, as the injection cylinder 15 and the raw material melting cylinder are provided separately, a high injection pressure would not be exerted on the glass tube, and high reliability with respect to the strength can be secured.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は樹脂の射出成形機に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a resin injection molding machine.

従来例の構成とその問題点 ２、　− 従来の射出成形機は第１図にその具体例を示すように、
ホッパー６内のノリスチック原料を溶融射出するに際し
、モータ４の回転によシ、減速機５を介してスクリュ１
を回転させる。Configuration of conventional example and its problems 2 - A conventional injection molding machine has the following configuration as shown in Fig. 1:
When melting and injecting the nolistic raw material in the hopper 6, the rotation of the motor 4 causes the screw 1 to pass through the speed reducer 5.
Rotate.

ホッパー６よりシリンダ２内に供給された原料はスクリ
ュ１０回転による剪断熱と外部ヒータ了からの加熱によ
って可塑化され、シリンダ２の前部に蓄積される。次に
可塑化された原料は射出シリンダ３を作動させることに
よってスクリュ１が前進し、溶融原料を射出するもので
ある。The raw material supplied into the cylinder 2 from the hopper 6 is plasticized by the shear heat generated by 10 rotations of the screw and by heating from an external heater, and is accumulated in the front part of the cylinder 2. Next, by operating the injection cylinder 3, the screw 1 advances to inject the plasticized raw material.

以上のような従来例の問題点としては、ヒータ７の昇温
時間が長くかかるため成形開始２ｏ〜３０分前にはヒー
タ７に通電する必要があり、例えば成形機と組立ライン
の連結や同期運転等では大きな障害となるケースがあっ
た。The problem with the conventional method as described above is that it takes a long time to heat up the heater 7, so it is necessary to energize the heater 7 20 to 30 minutes before the start of molding. There have been cases where this has caused serious problems when driving.

発明の目的 本発明は上記従来の欠点を解消するものであり、成形材
料である樹脂材料の溶融を短時間で行うことができ、運
転開始時の成形開始可能時間を短縮することを目的とす
る。Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and aims to shorten the time required to start molding at the start of operation by melting a resin material that is a molding material in a short time. .

発明の構成 本発明の射出成形機は、透明性を有するガラス管シリン
ダの外側に、複数個の赤外線ヒータを配設し、更に該赤
外線ヒータの外側に反射板を設け、前記ガラス管シリン
ダを射出シリンダに切換バルブを介して連結すると共に
前記ガラス管シリンダ内の樹脂材料を前記射出シリンダ
に移送する移送手段を備え、前記射出シリンダ内には溶
融樹脂を射出する射出プランジャを備えだものであり、
樹脂材料の溶融に赤外線ヒータを利用しているので、数
分で所定温度となり成形開始が短時間で行えるものであ
る。Structure of the Invention The injection molding machine of the present invention includes a plurality of infrared heaters disposed outside a transparent glass tube cylinder, a reflector plate further disposed outside the infrared heaters, and an injection molding machine configured to inject the glass tube cylinder. A transfer means is connected to the cylinder via a switching valve and transfers the resin material in the glass tube cylinder to the injection cylinder, and the injection cylinder includes an injection plunger for injecting the molten resin,
Since an infrared heater is used to melt the resin material, the predetermined temperature is reached within a few minutes, allowing molding to begin in a short time.

実施例の説明 以下に本発明の第１の実施例を第２図に基づいて説明す
る。図において８は透明なガラス管シリンダ、９はシリ
ンダ８の外側に配設された赤外線Ａ ヒータを構成する赤外線ランプで、この赤外線ランプ９
の光を全てガラス管シリンダ８の方向へ反射するだめの
反射板１１が、反射板冷却用ウォータージャケット１ｏ
の内面側に配設されている。DESCRIPTION OF EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. In the figure, 8 is a transparent glass tube cylinder, 9 is an infrared lamp that constitutes an infrared A heater arranged outside the cylinder 8, and this infrared lamp 9
A reflector plate 11 that reflects all the light toward the glass tube cylinder 8 is a water jacket 1o for cooling the reflector plate.
It is placed on the inner side of the.

１４は接続ブロックでその中心部に溶融樹脂の流路１４
ａを有しガラス管シリンダ８と射出シリンダ１５とを連
結している。１６は射出及び原料溶曽時は閉、射出シリ
ンダ１５のプランジャー１７の後退時は開となる切換バ
ルブである。１８はガラス管シリンダ８内に設けられた
回転羽根でモータ１９により回転駆動され、ガラス管シ
リンダ８内の樹脂を射出シリンダ１５へ移送する移送手
段を構成している。２０は成形材料をガラス管シリンダ
８に供給するだめのホッパーであり、２１は冷却用ウォ
ータージャケット１０及びガラス管シリンダ８．モータ
１９．ホッパー２０等を固定する補助板である。なお、
１２は射出用ノズル、１３は保温用バンドヒータである
。14 is a connection block with a flow path 14 for molten resin in its center.
a to connect the glass tube cylinder 8 and the injection cylinder 15. Reference numeral 16 designates a switching valve that is closed during injection and melting of the raw material, and opened when the plunger 17 of the injection cylinder 15 is retracted. Reference numeral 18 denotes a rotary vane provided in the glass tube cylinder 8, which is rotationally driven by a motor 19, and constitutes a transfer means for transferring the resin in the glass tube cylinder 8 to the injection cylinder 15. 20 is a hopper for supplying the molding material to the glass tube cylinder 8; 21 is a cooling water jacket 10 and the glass tube cylinder 8. Motor 19. This is an auxiliary plate that fixes the hopper 20, etc. In addition,
12 is an injection nozzle, and 13 is a heat-retaining band heater.

以上の構成において、１サイクルの作動順序は、フィー
ド用の回転羽根１８をモータ１９によって回転すること
により、ホッパ２０内の樹脂材料はガラス管シリンダ８
内に転送される。しかる後赤外線ランプ９により前記樹
脂材料を加熱溶融し、接続ブロック１４内の切換バルブ
１６を開にすることにより溶融樹脂は射出シリンダ１５
内に移送される。次に切換バルブ１６を閉にし、射出シ
リンダ１５のプランジャー１７を前進させることにより
、溶融樹脂はノズル１２を通過して射出される。In the above configuration, the operating order of one cycle is that the feed rotary blade 18 is rotated by the motor 19, and the resin material in the hopper 20 is transferred to the glass tube cylinder 8.
transferred within. Thereafter, the resin material is heated and melted using an infrared lamp 9, and the switching valve 16 in the connection block 14 is opened to transfer the molten resin to the injection cylinder 15.
transferred within. Next, by closing the switching valve 16 and advancing the plunger 17 of the injection cylinder 15, the molten resin passes through the nozzle 12 and is injected.

このように本実施例ではガラス管シリンダ８の外側から
赤外線ランプを利用して樹脂材料を溶融するので、従来
のスクリュ及びバンドヒータ方式に比べて溶融時間が短
かく、且つヒータの断線事故も少ない。まだ、射出シリ
ンダ１５と原料溶融シリンダを別個に設けることにより
、高い射出圧力がガラス管に加わることがなく、強度面
での高い信頼性が得られる。As described above, in this embodiment, since the resin material is melted using an infrared lamp from the outside of the glass tube cylinder 8, the melting time is shorter than in the conventional screw and band heater method, and there are fewer heater breakage accidents. . However, by providing the injection cylinder 15 and the raw material melting cylinder separately, high injection pressure is not applied to the glass tube, and high reliability in terms of strength can be obtained.

また、ガラス管シリンダ８内に回転羽根１８を設けるこ
とにより、ガラス管シリンダ８の壁内面への溶融樹脂の
付着を防止し、可塑化効率を上げるものである。更にガ
ラス管シリンダ８内の材料は、その中心部に回転羽根１
８が設けられている為、管壁近辺に集まり、一層溶融効
果を上げるのに有効であり、溶融後の材料の混練による
均質化６二・ も図れるものである。In addition, by providing the rotating blades 18 inside the glass tube cylinder 8, it is possible to prevent the molten resin from adhering to the inner wall surface of the glass tube cylinder 8, thereby increasing the plasticization efficiency. Furthermore, the material inside the glass tube cylinder 8 has a rotating blade 1 in its center.
8, it gathers near the tube wall, which is effective in further increasing the melting effect, and also enables homogenization by kneading the material after melting.

以下に本発明の第２の実施例を第４図に基づいて説明す
る。図において３０は透明なガラス管シリンダ、３１は
ガラス管シリンダ３ｏの外側に配設されたリング状の赤
外線ランプで、赤外線ヒータを構成する。この赤外線ラ
ンプ３１の光を全てガラス管シリンダ３０の方向へ反射
するだめの反射板３２が、反射板冷却用ウォータージャ
ケット３３の内面側に配設されている。３４は接続ブロ
ック、３５は流路、３６はこの流路３５を開閉する切換
バルブ、３７は射出シリンダ、３８はプランジャ、３９
は射出用ノズル、４０は保温用バンドヒータである。４
１は回転羽根、４２はその駆動用モータ、４３は樹脂供
給用ホッパである。A second embodiment of the present invention will be described below with reference to FIG. In the figure, 30 is a transparent glass tube cylinder, and 31 is a ring-shaped infrared lamp disposed outside the glass tube cylinder 3o, which constitutes an infrared heater. A reflector plate 32 that reflects all of the light from the infrared lamp 31 toward the glass tube cylinder 30 is provided on the inner surface of the water jacket 33 for cooling the reflector plate. 34 is a connection block, 35 is a flow path, 36 is a switching valve that opens and closes this flow path 35, 37 is an injection cylinder, 38 is a plunger, 39
is an injection nozzle, and 40 is a band heater for keeping warm. 4
1 is a rotary blade, 42 is a driving motor thereof, and 43 is a resin supply hopper.

以上の構成においては、前記第１の実施例に比べ、赤外
線ヒータとしてリング状の赤外線ランプ３１を使ってい
るので、ガラス管シリンダ３０内の軸方向の温度分布を
段階的に制御することができ精密な成形に有利である。In the above configuration, since the ring-shaped infrared lamp 31 is used as the infrared heater, the temperature distribution in the axial direction inside the glass tube cylinder 30 can be controlled in stages, compared to the first embodiment. It is advantageous for precise molding.

以下に本発明の第３の実施例を第５図に基づい７／−ジ
・ て説明する。図において４４は透明なガラス管シリンダ
、４５はガラス管シリンダ４４の外側に配設されたリン
グ状の赤外線ランプで赤外線ヒータを構成する。この赤
外線ランプ４６の光を全てガラス管シリンダ４４の方向
へ反射するだめの反射板４６が、反射板冷却用ウォータ
ージャケノ１−４７の内面側に配設されている。４８は
接続ブロック、４９は流路、５０はこの流路４９を開閉
する切換パルプ、６１は射出シリンダ、５２はプランジ
ャ、６３は射出用ノズル、５４は保温用バンドヒータで
ある。５５は樹脂材料を射出シリンダ５１へ移送する移
送手段を構成するプランジャ、５６は材料供給用のホッ
パである。A third embodiment of the present invention will be described below with reference to FIG. In the figure, 44 is a transparent glass tube cylinder, and 45 is a ring-shaped infrared lamp disposed outside the glass tube cylinder 44, which constitutes an infrared heater. A reflector plate 46 for reflecting all of the light from the infrared lamp 46 toward the glass tube cylinder 44 is provided on the inner surface of the reflector cooling water jacket 1-47. 48 is a connection block, 49 is a flow path, 50 is a switching pulp for opening and closing this flow path 49, 61 is an injection cylinder, 52 is a plunger, 63 is an injection nozzle, and 54 is a heat-retaining band heater. 55 is a plunger constituting a transfer means for transferring the resin material to the injection cylinder 51, and 56 is a hopper for supplying the material.

以上の構成においては、前記第２の実施例同様、赤外線
ヒータとしてリング状の赤外線ランプ４５を使っている
ので、ガラス管シリンダ４４内の軸′へ 方向の温度分布を段階的に制御することができ精密な成
形に有利である。In the above configuration, as in the second embodiment, since the ring-shaped infrared lamp 45 is used as the infrared heater, the temperature distribution in the direction toward the axis ' inside the glass tube cylinder 44 can be controlled in stages. This is advantageous for precise molding.

発明の効果 以上の通り、本発明はガラス管シリンダの外側から赤外
線ヒータを利用して原料を溶融するので、従来のスクリ
ュ及びバンドヒータ方式に比べて成形材料溶融時間が短
かく、運転開始可能時間を短くできる。まだヒータの断
線事故も少なく、射出シリンダと材料溶融用のシリンダ
を別個に設けることにより、高い射出圧力がガラス管に
加わることがなく、強度面での高い信頼性が得られる。Effects of the Invention As described above, since the present invention uses an infrared heater from the outside of the glass tube cylinder to melt the raw material, the molding material melting time is shorter than the conventional screw and band heater methods, and the time required to start operation is shorter. can be shortened. There are still very few heater breakage accidents, and by providing separate injection cylinders and material melting cylinders, high injection pressure is not applied to the glass tube, resulting in high reliability in terms of strength.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のインラインスクリュ一式射出装置の断面
図、第２図は本発明の第１の実施例の構成図、第３図は
同溶融部の拡大図、第４図は本発明の第２の実施例の射
出成形機の断面図、第５図は本発明の第３の実施例の射
出成形機の断面図である。 ８・・・°°°ガラス管シサシリンダ・・・・・・赤外
線ランプ（赤外線ヒータ）、１１・・・・・・反射板、
１５・・・・・・射出シリンダ、１６・・・・・・切換
バルブ、１８・・・・・・回転羽根（移送手段）。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第２図 第３図 す 第４図 ９FIG. 1 is a sectional view of a conventional in-line screw injection device, FIG. 2 is a configuration diagram of a first embodiment of the present invention, FIG. 3 is an enlarged view of the melting section, and FIG. FIG. 5 is a sectional view of an injection molding machine according to a third embodiment of the present invention. 8...°°°Glass tube shisa cylinder...Infrared lamp (infrared heater), 11...Reflector plate,
15... Injection cylinder, 16... Switching valve, 18... Rotating vane (transfer means). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 9

Claims (3)

【特許請求の範囲】[Claims] （１）透明性を有するガラス管シリンダの外側に、複数
個の赤外線ヒータを配設し、更に前記赤外線ヒータの外
側に反射板を設け、前記ガラス管シリンダを射出シリン
ダに切換パルプを介して連結すると共に前記ガラス管シ
リンダ内の樹脂材料を前記射出シリンダに移送する移送
手段を備え、前記射出シリンダ内には溶融樹脂を射出す
る射出プランジャを備えだ射出成形機。(1) A plurality of infrared heaters are arranged on the outside of a transparent glass tube cylinder, a reflection plate is further provided on the outside of the infrared heater, and the glass tube cylinder is connected to the injection cylinder via a switching pulp. The injection molding machine further comprises a transfer means for transferring the resin material in the glass tube cylinder to the injection cylinder, and an injection plunger for injecting the molten resin into the injection cylinder. （２）移送手段を、モータを備えた回転羽根とした特許
請求の範囲第１項記載の射出成形機。(2) The injection molding machine according to claim 1, wherein the transfer means is a rotating blade equipped with a motor. （３）赤外線ヒータをリング状の赤外線ランプとした特
許請求の範囲第１項記載の射出成形機。(3) The injection molding machine according to claim 1, wherein the infrared heater is a ring-shaped infrared lamp.
JP6869783A 1983-04-18 1983-04-18 Injection molder Pending JPS59192542A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6869783A JPS59192542A (en) 1983-04-18 1983-04-18 Injection molder
US06/601,160 US4600375A (en) 1983-04-18 1984-04-17 Injection apparatus including means for feeding solid resin to an injection means and radiant heating means to melt the resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6869783A JPS59192542A (en) 1983-04-18 1983-04-18 Injection molder

Publications (1)

Publication Number Publication Date
JPS59192542A true JPS59192542A (en) 1984-10-31

Family

ID=13381212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6869783A Pending JPS59192542A (en) 1983-04-18 1983-04-18 Injection molder

Country Status (1)

Country Link
JP (1) JPS59192542A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577839A (en) * 1994-06-16 1996-11-26 Krauss Maffei Aktiengesellschaft Device for charging injection molding and extruding machines and having a funnel provided with pins passing through clearances in a feed worm
CN110936546A (en) * 2019-12-11 2020-03-31 吴秀丽 V-shaped horizontal injection molding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577839A (en) * 1994-06-16 1996-11-26 Krauss Maffei Aktiengesellschaft Device for charging injection molding and extruding machines and having a funnel provided with pins passing through clearances in a feed worm
CN110936546A (en) * 2019-12-11 2020-03-31 吴秀丽 V-shaped horizontal injection molding machine

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