JPH08207107A - Temperature regulator of injection plunger of tandem type injection molding machine - Google Patents
Temperature regulator of injection plunger of tandem type injection molding machineInfo
- Publication number
- JPH08207107A JPH08207107A JP1607295A JP1607295A JPH08207107A JP H08207107 A JPH08207107 A JP H08207107A JP 1607295 A JP1607295 A JP 1607295A JP 1607295 A JP1607295 A JP 1607295A JP H08207107 A JPH08207107 A JP H08207107A
- Authority
- JP
- Japan
- Prior art keywords
- injection
- temperature
- plunger
- injection plunger
- molding machine
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 107
- 239000007924 injection Substances 0.000 title claims abstract description 107
- 238000001746 injection moulding Methods 0.000 title claims description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000000465 moulding Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000002265 prevention Effects 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチック等を射出
成形するタンデム型射出成形機の射出プランジャ温度調
節装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature adjusting device for an injection plunger of a tandem type injection molding machine for injection molding plastic or the like.
【０００２】[0002]
【従来の技術】従来のプラスチック等を射出成形するタ
ンデム型射出成形機を図３、図４により説明すると、５
０が上流側の一段目予備可塑化機構で、同一段目予備可
塑化機構５０は、温度調節機構７５と、同温度調節機構
７５により温度調節される加熱シリンダ５１と、同加熱
シリンダ５１により溶融されたプラスチック等の原料を
混練しながら搬送するスクリュー５２とを有し、加熱シ
リンダ５１を温度調節する温度調節機構７５は、加熱シ
リンダ５１の表面温度を計測して一定温度に保つ温度設
定機構（図示せず）に接続している。2. Description of the Related Art A conventional tandem type injection molding machine for injection molding plastics will be described with reference to FIGS.
0 is the upstream first-stage pre-plasticizing mechanism, and the same-stage pre-plasticizing mechanism 50 is the temperature adjusting mechanism 75, the heating cylinder 51 whose temperature is adjusted by the temperature adjusting mechanism 75, and the melting by the heating cylinder 51. A temperature adjusting mechanism 75 for adjusting the temperature of the heating cylinder 51, which has a screw 52 for conveying the raw material such as the plastic while kneading the same. (Not shown).
【０００３】従って予備可塑化機構５０のホッパ５５か
ら加熱シリンダ５１へ供給された樹脂材料材料は、温度
調節機構７５により、設定温度に加熱・溶融化される一
方、モータ５３が回転し、その回転が減速機５４を経て
スクリュー５２に伝えられ、同スクリュー５２が回転し
て、加熱・溶融化された樹脂材料が樹脂流通部５６を通
って二段目射出機構６０へ導入される。Therefore, the resin material supplied from the hopper 55 of the pre-plasticizing mechanism 50 to the heating cylinder 51 is heated and melted to the set temperature by the temperature adjusting mechanism 75, while the motor 53 rotates and its rotation. Is transmitted to the screw 52 via the speed reducer 54, the screw 52 rotates, and the heated and melted resin material is introduced into the second-stage injection mechanism 60 through the resin flow portion 56.
【０００４】この二段目射出機構６０は、射出シリンダ
６１を有し、同射出シリンダ６１は、バンドヒータ６７
により温度調節される。６２が逆流防止リング７４を装
着した射出プランジャで、同射出プランジャ６２は、プ
ランジャガイド７０に挿入され、シール７２を介してシ
ール抑え７１により保持されることにより、射出シリン
ダ６１内に進退可能に保持されている。The second-stage injection mechanism 60 has an injection cylinder 61, and the injection cylinder 61 has a band heater 67.
The temperature is controlled by. Reference numeral 62 denotes an injection plunger equipped with a backflow prevention ring 74. The injection plunger 62 is inserted into a plunger guide 70 and is held by a seal retainer 71 via a seal 72, so that the injection plunger 62 can be advanced and retracted in the injection cylinder 61. Has been done.
【０００５】また油圧シリンダ６５がスライドベース６
４上に固定され、同油圧シリンダ６５のピストンロッド
がスライドプレート６３に連結され、スライドプレート
６３及び射出プランジャ６２が油圧シリンダ６５の伸縮
方向への作動によりスライドベース６４のガイド溝６４
ａに沿って軸方向に前後進するようになっている。前記
タンデム型射出成形機の作用は、次の通りである。Further, the hydraulic cylinder 65 is a slide base 6.
4, the piston rod of the hydraulic cylinder 65 is connected to the slide plate 63, and the slide plate 63 and the injection plunger 62 are actuated in the expansion / contraction direction of the hydraulic cylinder 65 to guide the guide groove 64 of the slide base 64.
It is adapted to move forward and backward in the axial direction along a. The operation of the tandem type injection molding machine is as follows.
【０００６】図３は、射出シリンダ６１が後退した状態
を示している。この状態で、一段目予備可塑化機構５０
のホッパ５５に投入された固形樹脂材料が加熱シリンダ
５１の加熱とスクリュー５２の回転とより、加熱・溶融
化され、スクリュー５２の回転により加圧されて、樹脂
通路部５６を経て二段目射出機構６０の射出シリンダ６
１内へ所定量導入される。FIG. 3 shows a state in which the injection cylinder 61 is retracted. In this state, the first stage pre-plasticizing mechanism 50
The solid resin material charged into the hopper 55 is heated and melted by the heating of the heating cylinder 51 and the rotation of the screw 52, is pressurized by the rotation of the screw 52, and is injected through the resin passage portion 56 to the second stage. Injection cylinder 6 of mechanism 60
A predetermined amount is introduced into 1.
【０００７】このとき、溶融樹脂が逆流防止リング７４
と射出プランジャの鍔６２ａとの間及び射出プランジャ
６２に設けた溝６２ｂを通って射出シリンダ６１内へ充
填される。次いで油圧シリンダ６５が縮み方向に作動し
て、射出プランジャ６２が図４の位置まで前進すること
により、逆流防止リング７４が射出プランジャの鍔６２
ａに接して、溶融樹脂が逆流防止リング７４と射出プラ
ンジャの鍔６２ａとの間から後方へ流れるのを防ぎなが
ら、射出シリンダ６１内の加熱・溶融化された樹脂材料
がノズル６８から固定盤６９に装着した金型キャビテイ
（図示せず）へ射出される。At this time, the molten resin flows in the backflow prevention ring 74.
And the flange 62a of the injection plunger and through the groove 62b provided in the injection plunger 62, the inside of the injection cylinder 61 is filled. Next, the hydraulic cylinder 65 operates in the contracting direction, and the injection plunger 62 advances to the position shown in FIG. 4, so that the backflow prevention ring 74 causes the injection plunger collar 62 to move.
While the molten resin is prevented from flowing rearward between the backflow prevention ring 74 and the collar 62a of the injection plunger, the heated and melted resin material in the injection cylinder 61 is fixed from the nozzle 68 to the stationary plate 69. It is injected into the mold cavity (not shown) attached to the.
【０００８】その後、一段目予備可塑化機構５０から射
出シリンダ６１内へ加熱・溶融化された樹脂材料が導入
されて、射出シリンダ６１内に充満することにより、射
出プランジャ６２が後退を開始して、一工程の動作が終
了する。After that, the heated and melted resin material is introduced into the injection cylinder 61 from the first-stage pre-plasticizing mechanism 50 to fill the inside of the injection cylinder 61, whereby the injection plunger 62 starts to retreat. The operation of one step is completed.
【０００９】[0009]
【発明が解決しようとする課題】前記図３、図４に示す
従来のタンデム型射出成形機では、一段目予備可塑化機
構５０により加熱・溶融化された樹脂材料が二段目射出
機構６０の温度調節された射出シリンダ６１内へ導入さ
れ、温度調節された同射出シリンダ６１内を流動し、射
出プランジャ６２により、金型キャビテイへ射出される
が、射出プランジャ６２が温度調節機構を具えていない
ので、加熱・溶融化された樹脂材料が射出プランジャ６
２の表面に被着し、同射出プランジャ６２が進退を繰り
返すことにより、溶融樹脂が射出プランジャ６２により
熱を奪われて、樹脂温度が融点以下になり、射出プラン
ジャ６２の表面に固着して、スキン層と称する層が形成
され、この層が樹脂替え、色替えの際になかなか置換さ
れないために、射出プランジャ６２の表面に残って、樹
脂替え、色替えに支障を来すという問題があった。In the conventional tandem type injection molding machine shown in FIGS. 3 and 4, the resin material heated and melted by the first-stage pre-plasticizing mechanism 50 is stored in the second-stage injection mechanism 60. It is introduced into the temperature-controlled injection cylinder 61, flows in the temperature-controlled injection cylinder 61, and is injected into the mold cavity by the injection plunger 62, but the injection plunger 62 has no temperature adjustment mechanism. Therefore, the heated and melted resin material is the injection plunger 6.
By depositing on the surface of No. 2, and the injection plunger 62 repeatedly advancing and retracting, the molten resin is deprived of heat by the injection plunger 62, the resin temperature becomes below the melting point, and the resin is fixed on the surface of the injection plunger 62. A layer called a skin layer is formed, and this layer is not easily replaced at the time of resin change and color change, and therefore remains on the surface of the injection plunger 62, which causes a problem of resin change and color change. .
【００１０】本発明は前記の問題点に鑑み提案するもの
であり、その目的とする処は、スキン層の射出プランジ
ャ表面への形成を防止できて、樹脂替え、色替えを支障
なく行うことができるタンデム型射出成形機の射出プラ
ンジャ温度調節装置を提供しようとする点にある。The present invention has been proposed in view of the above problems, and an object thereof is to prevent formation of a skin layer on the surface of an injection plunger, and to perform resin change and color change without trouble. It is an object of the present invention to provide an injection plunger temperature control device for a tandem injection molding machine that can be used.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、一段目予備可塑化機構により加熱・溶
融化した樹脂材料を二段目射出機構の温度調節された射
出シリンダ内へ導入して、同射出シリンダの射出プラン
ジャにより金型キヤビティへ射出するタンデム型射出成
形機において、前記射出プランジャを前記射出シリンダ
内の溶融樹脂温度に合わせて温度調節することにより樹
脂材料を溶融状態に保って同射出プランジャの表面にス
キン層として固着させないようにする温度調節機構を有
し、同温度調節機構を前記射出プランジャの軸芯孔内に
設けている（請求項１）。In order to achieve the above object, the present invention relates to a temperature controlled injection cylinder of a second stage injection mechanism for a resin material heated and melted by a first stage pre-plasticization mechanism. In the tandem type injection molding machine in which the injection plunger of the injection cylinder injects into the mold cavity, the resin material is melted by adjusting the temperature of the injection plunger according to the temperature of the molten resin in the injection cylinder. The temperature adjusting mechanism is provided in the shaft hole of the injection plunger so as not to adhere to the surface of the injection plunger as a skin layer.
【００１２】前記タンデム型射出成形機の射出プランジ
ャ温度調節装置において、射出プランジャの軸芯孔内に
複数個の温度調節機構を設けることにより同射出プラン
ジャの表面をゾーン別に温度調節可能にしてもよい（請
求項２）。In the injection plunger temperature adjusting device of the tandem injection molding machine, a plurality of temperature adjusting mechanisms may be provided in the shaft hole of the injection plunger so that the temperature of the surface of the injection plunger can be adjusted zone by zone. (Claim 2).
【００１３】[0013]
【作用】本発明のタンデム型射出成形機の射出プランジ
ャ温度調節装置は前記のように構成されており、一段目
予備可塑化機構により加熱・溶融化された樹脂材料が二
段目射出機構の射出シリンダ内を流通する際、射出シリ
ンダの表面に溶融された状態で被着するが、温度調節機
構により、射出プランジャの表面温度が樹脂材料の融点
よりも若干高い温度または成形に最適な樹脂温度に調節
されるので、樹脂材料が溶融状態に保たれ、固着、残留
することがなくて、次工程の金型内へスムーズに射出さ
れる。The operation of the injection plunger temperature controller of the tandem type injection molding machine of the present invention is configured as described above, and the resin material heated and melted by the first-stage pre-plasticizing mechanism is injected by the second-stage injection mechanism. When flowing through the cylinder, it adheres to the surface of the injection cylinder in a molten state, but the temperature adjustment mechanism allows the surface temperature of the injection plunger to be slightly higher than the melting point of the resin material or to the optimum resin temperature for molding. Since the resin material is adjusted, the resin material is kept in a molten state, does not stick and remains, and is smoothly injected into the mold of the next step.
【００１４】[0014]
（第１実施例）本発明のタンデム型射出成形機の射出プ
ランジャ温度調節装置を図１に示す第１実施例により説
明する。５０が一段目予備可塑化機構で、この一段目予
備可塑化機構５０は、従来例と同じなので、詳細な説明
は省略する。(First Embodiment) An injection plunger temperature adjusting device for a tandem injection molding machine of the present invention will be described with reference to a first embodiment shown in FIG. The first-stage pre-plasticizing mechanism 50 is the same as that of the conventional example, so detailed description thereof will be omitted.
【００１５】１０が二段目射出機構、２１が同二段目射
出機構１０の射出シリンダで、同射出シリンダ２１に
は、射出プランジャ２２が進退可能に挿入され、同射出
プランジャ２２の軸芯孔には、ヒータである温度調節機
構２３が設けられている。２７が同射出プランジャ２２
に装着した逆流防止リング、３０が射出プランジャ２２
を進退可能に支持する射出シリンダ２１側のプランジャ
ガイド部、３２が溶融樹脂の漏洩を防止するシール部
材、３１がシール抑えである。Reference numeral 10 is a second-stage injection mechanism, 21 is an injection cylinder of the second-stage injection mechanism 10, and an injection plunger 22 is inserted into the injection cylinder 21 such that the injection plunger 22 can move forward and backward. A temperature adjusting mechanism 23, which is a heater, is provided in the. 27 is the same injection plunger 22
The backflow prevention ring attached to the
Is a plunger guide portion on the injection cylinder 21 side for supporting so as to move forward and backward, a seal member 32 for preventing leakage of molten resin, and 31 is a seal retainer.
【００１６】２４がスライドベースで、同スライドベー
ス２４には、座を介して油圧シリンダ２５が固定されて
いる。２６がスライドプレートで、同スライドプレート
２６は、スライドベース２４のガイド溝２４ａに摺動可
能に嵌挿され、油圧シリンダのピストンロッドがスライ
ドプレート２６に連結されている。次に前記図１に示す
タンデム型射出成形機の射出プランジャ温度調節装置の
作用を具体的に説明する。A slide base 24 has a hydraulic cylinder 25 fixed to the slide base 24 via a seat. Reference numeral 26 denotes a slide plate, which is slidably fitted in a guide groove 24 a of a slide base 24, and a piston rod of a hydraulic cylinder is connected to the slide plate 26. Next, the operation of the injection plunger temperature adjusting device of the tandem injection molding machine shown in FIG. 1 will be specifically described.
【００１７】樹脂材料が一段目予備可塑化機構５０によ
り、加熱・溶融化されて、スクリュー５２の回転による
圧力により、樹脂通路６→二段目射出機構１０の射出シ
リンダ２１内へ所定量導入され、油圧シリンダ２５の縮
み方向への作動により、スライドプレート２６と射出プ
ランジャ２２とが前進し、射出シリンダ２１内の加熱・
溶融化された樹脂材料が加圧されて、ノズル２８から固
定盤２９に装着された金型キャビテイ（図示せず）へ射
出される。The resin material is heated and melted by the first-stage pre-plasticizing mechanism 50 and is introduced into the injection cylinder 21 of the second-stage injection mechanism 10 through the resin passage 6 by the pressure generated by the rotation of the screw 52. By the operation of the hydraulic cylinder 25 in the contracting direction, the slide plate 26 and the injection plunger 22 move forward to heat the inside of the injection cylinder 21.
The molten resin material is pressurized and injected from the nozzle 28 into a mold cavity (not shown) mounted on the stationary platen 29.
【００１８】そして上記のように一段目予備可塑化機構
５０により加熱・溶融化された樹脂材料が二段目射出機
構１０の射出シリンダ２１内を流通する際、射出シリン
ダ２１の表面に溶融された状態で被着するが、温度調節
機構２３により、射出プランジャ２１の表面温度が樹脂
材料の融点よりも若干高い温度または成形に最適な樹脂
温度に調節されるので、樹脂材料が溶融状態に保たれ、
固着、残留することがなくて、次工程の金型内へスムー
ズに射出される。When the resin material heated and melted by the first-stage pre-plasticizing mechanism 50 as described above flows through the injection cylinder 21 of the second-stage injection mechanism 10, it is melted on the surface of the injection cylinder 21. Although the surface temperature of the injection plunger 21 is adjusted to a temperature slightly higher than the melting point of the resin material or a resin temperature suitable for molding by the temperature adjusting mechanism 23, the resin material is kept in a molten state. ,
It does not stick or remain, and is smoothly injected into the mold in the next step.
【００１９】（第２実施例）図２は、本発明のタンデム
型射出成形機の射出プランジャ温度調節装置の第２実施
例を示している。図２により、前記第１実施例と異なる
点だけについて説明する。図２は、二段目射出機構１０
の射出プランジャの温調調節機構を示している。４２が
射出プランジャで、同射出プランジャ４２の頭部と軸部
とプランジャガイド３０への接触部とで異なる温度を均
一にするために、射出プランジャ４２の軸芯孔うち、頭
部の軸芯孔には、第１温度調節機構（ヒータ）４２が挿
入され、軸部の軸芯孔には、第２温度調節機構（ヒー
タ）４３が挿入され、プランジャガイド３０への接触部
の軸芯孔には、第３温度調節機構（ヒータ）４４が挿入
されて、これらゾーンでの加熱量が調節可能になってお
り、第１、２、３温度調節機構４２、４３、４４による
加熱量を変化させるより、射出プランジャ温度が溶融温
度近傍またはそれよりも僅かに高く均一に制御、保持さ
れて、スキン層の固着が防止される。(Second Embodiment) FIG. 2 shows a second embodiment of the injection plunger temperature adjusting device of the tandem type injection molding machine of the present invention. Only differences from the first embodiment will be described with reference to FIG. FIG. 2 shows the second-stage injection mechanism 10.
2 shows the temperature control mechanism of the injection plunger of FIG. Reference numeral 42 denotes an injection plunger. In order to make different temperatures in the head portion of the injection plunger 42, the shaft portion, and the contact portion with the plunger guide 30, the injection plunger 42 has a shaft core hole of the shaft core hole of the head part. The first temperature adjusting mechanism (heater) 42 is inserted into the shaft core hole, and the second temperature adjusting mechanism (heater) 43 is inserted into the shaft core hole of the shaft portion. A third temperature adjusting mechanism (heater) 44 is inserted to adjust the amount of heating in these zones, and the amount of heating by the first, second and third temperature adjusting mechanisms 42, 43, 44 is changed. As a result, the injection plunger temperature is controlled and held uniformly around the melting temperature or slightly higher than the melting temperature, and the skin layer is prevented from sticking.
【００２０】この射出プランジャ温度調節装置でも、前
記第１実施例と同様の作用が行われる。Also in this injection plunger temperature adjusting device, the same operation as in the first embodiment is performed.
【００２１】[0021]
【発明の効果】本発明のタンデム型射出成形機の射出プ
ランジャ温度調節装置は前記のように一段目予備可塑化
機構により加熱・溶融化された樹脂材料を二段目射出機
構の射出シリンダ内に流通させる際、射出シリンダの表
面に溶融した状態で被着するが、温度調節機構により、
射出プランジャの表面温度を樹脂材料の融点よりも若干
高い温度または成形に最適な樹脂温度に調節するので、
樹脂材料を溶融状態に保ち、固着、残留させることがな
くて、次工程の金型内へスムーズに射出する。そのた
め、スキン層の射出プランジャ表面への形成を防止でき
て、樹脂替え、色替えを支障なく行うことができる。As described above, in the injection plunger temperature adjusting device of the tandem type injection molding machine of the present invention, the resin material heated and melted by the first stage pre-plasticizing mechanism is placed in the injection cylinder of the second stage injection mechanism. When flowing, it adheres to the surface of the injection cylinder in a molten state, but due to the temperature adjustment mechanism,
Since the surface temperature of the injection plunger is adjusted to a temperature slightly higher than the melting point of the resin material or the resin temperature optimum for molding,
The resin material is kept in a molten state and is not stuck and remains, so that it can be smoothly injected into the mold of the next step. Therefore, the formation of the skin layer on the surface of the injection plunger can be prevented, and the resin and the color can be changed without any trouble.
【図１】本発明のタンデム型射出成形機の射出プランジ
ャ温度調節装置の第１実施例を示す縦断側面図である。FIG. 1 is a vertical sectional side view showing a first embodiment of an injection plunger temperature adjusting device of a tandem type injection molding machine of the present invention.
【図２】本発明のタンデム型射出成形機の射出プランジ
ャ温度調節装置の第２実施例を示す縦断側面図である。FIG. 2 is a vertical sectional side view showing a second embodiment of the injection plunger temperature adjusting device of the tandem injection molding machine of the present invention.
【図３】従来のタンデム型射出成形機の射出プランジャ
後退時の状態を示す縦断側面図である。FIG. 3 is a vertical sectional side view showing a state when the injection plunger of the conventional tandem injection molding machine is retracted.
【図４】同タンデム型射出成形機の射出プランジャ前進
時の状態を示す縦断側面図である。FIG. 4 is a vertical cross-sectional side view showing a state of the tandem type injection molding machine when an injection plunger is advanced.
１０ 二段目射出機構 ２１ 射出シリンダ ２２ 射出プランジャ ２３ 温度調節機構 ２８ ノズル ２９ 固定盤 ４２ 射出プランジャ ４２〜４４ 温度調節機構 ５０ 一段目予備可塑化機構 ５３ モータ ５４ 減速機 ５５ ホッパ 10 Second-stage Injection Mechanism 21 Injection Cylinder 22 Injection Plunger 23 Temperature Control Mechanism 28 Nozzle 29 Fixed Plate 42 Injection Plunger 42-44 Temperature Control Mechanism 50 First Stage Pre-Plasticization Mechanism 53 Motor 54 Reducer 55 Hopper
Claims (2)
化した樹脂材料を二段目射出機構の温度調節された射出
シリンダ内へ導入して、同射出シリンダの射出プランジ
ャにより金型キヤビティへ射出するタンデム型射出成形
機において、前記射出プランジャを前記射出シリンダ内
の溶融樹脂温度に合わせて温度調節することにより樹脂
材料を溶融状態に保って同射出プランジャの表面にスキ
ン層として固着させないようにする温度調節機構を有
し、同温度調節機構を前記射出プランジャの軸芯孔内に
設けたことを特徴とするタンデム型射出成形機の射出プ
ランジャ温度調節装置。1. A resin material heated and melted by a first-stage pre-plasticization mechanism is introduced into a temperature-controlled injection cylinder of a second-stage injection mechanism, and is injected into a mold cavity by an injection plunger of the injection cylinder. In the tandem injection molding machine, the temperature of the injection plunger is adjusted according to the temperature of the molten resin in the injection cylinder to keep the resin material in a molten state and prevent the resin from sticking to the surface of the injection plunger as a skin layer. An injection plunger temperature adjusting device for a tandem injection molding machine, which has a temperature adjusting mechanism, and the temperature adjusting mechanism is provided in a shaft core hole of the injection plunger.
の温度調節機構を設けることにより同射出プランジャの
表面をゾーン別に温度調節可能にした請求項１記載のタ
ンデム型射出成形機の射出プランジャ温度調節装置。2. The injection plunger of a tandem injection molding machine according to claim 1, wherein the temperature of the surface of the injection plunger can be adjusted zone by zone by providing a plurality of temperature adjustment mechanisms in the shaft core hole of the injection plunger. Temperature control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01607295A JP3643613B2 (en) | 1995-02-02 | 1995-02-02 | Tandem type injection molding machine injection plunger temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01607295A JP3643613B2 (en) | 1995-02-02 | 1995-02-02 | Tandem type injection molding machine injection plunger temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08207107A true JPH08207107A (en) | 1996-08-13 |
| JP3643613B2 JP3643613B2 (en) | 2005-04-27 |
Family
ID=11906373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01607295A Expired - Fee Related JP3643613B2 (en) | 1995-02-02 | 1995-02-02 | Tandem type injection molding machine injection plunger temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3643613B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152925A1 (en) * | 2007-06-14 | 2008-12-18 | Konica Minolta Opto, Inc. | Injection mechanism, injection molding machine, and optical element |
| CN104494074A (en) * | 2014-11-05 | 2015-04-08 | 泰瑞机器股份有限公司 | Preplasticizing injection moulding apparatus |
| US10882091B2 (en) | 2015-12-17 | 2021-01-05 | Sms Group Gmbh | Extruder and tube extruder or metal extrusion press |
-
1995
- 1995-02-02 JP JP01607295A patent/JP3643613B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152925A1 (en) * | 2007-06-14 | 2008-12-18 | Konica Minolta Opto, Inc. | Injection mechanism, injection molding machine, and optical element |
| JPWO2008152925A1 (en) * | 2007-06-14 | 2010-08-26 | コニカミノルタオプト株式会社 | Injection mechanism, injection molding machine and optical element |
| CN104494074A (en) * | 2014-11-05 | 2015-04-08 | 泰瑞机器股份有限公司 | Preplasticizing injection moulding apparatus |
| CN104494074B (en) * | 2014-11-05 | 2016-10-05 | 泰瑞机器股份有限公司 | A kind of Preplasticizing injection moulding apparatus |
| US10882091B2 (en) | 2015-12-17 | 2021-01-05 | Sms Group Gmbh | Extruder and tube extruder or metal extrusion press |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3643613B2 (en) | 2005-04-27 |
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