Nova Patents
JPH06190891A

Plasticization apparatus and plasticization method using the same

Abstract

PURPOSE:To achieve equipment downsizing and cost reduction, to make sealing inside a cylinder effective, to increase production of molded products, and to improve product quality by installing a rotary valve for feeding material connected closely to a cylinder with a screw inserted into the cylinder. CONSTITUTION:In a plasticization apparatus, a rotary valve 2 is connected to the outlet side of a hopper 1, to which a cylinder 4 is closely connected through a manifold 3. The rotary valve 2 is rotated by a driving motor 2a to feed material in the hopper 1 to the cylinder 4. A screw 5 rotated by a driving part 7 is inserted into the hollow part of the cylinder 4, and a rotation seal part 6, which prevents air inflow from the driving part 7 side, is installed close to the screw root part 5a. Since the cylinder 4 is always sealed by the rotary valve 2 in the plasticization apparatus, air inflow during deaeration is effectively prevented, and an optional amount of the material in an optional condition can be fed by the rotary valve 2.

Term

No projected expiry on record.

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13 claims: 3 independent, 10 dependent

  1. 1
    [Claims] 1. A plasticizer according to claim 1, wherein a rotary valve for inserting a screw into the cylinder and supplying a material into the cylinder is provided in a sealed connection with the cylinder. 【特許請求の範囲】 【請求項1】 シリンダ内にスクリュを挿入するとともに、上記シリンダ内へ材料を供給するロータリバルブを、上記シリンダと密閉接続して設けたことを特徴とする可塑化装置。
    2
    The plasticizing device according to claim 1, wherein a suction pump for sucking air to the outside is attached between the rotary valve and the cylinder. 【請求項2】 ロータリバルブとシリンダの中間に、空気を外部に吸引する吸引ポンプを取り付けた請求項1記載の可塑化装置。
    3
    The plasticizer according to claim 1, wherein an air vent is provided in the vicinity of the material supply portion of the cylinder. 【請求項3】 シリンダの材料供給部付近に空気抜き部を設けた請求項1記載の可塑化装置。
    4
    The plasticizer according to claim 1, wherein a screw having two or more shafts is inserted into the cylinder, and a vent hole is provided in the upper part of the cylinder. 【請求項4】 シリンダ内に二軸以上のスクリュを挿入し、かつ、上記シリンダの上部にベント孔を設けた請求項1又は3記載の可塑化装置。
    5
    The plasticizer according to claim 1, 2, 3 or 4, wherein a plurality of rotary valves are laminated. 【請求項5】 複数のロータリバルブを積層して設けた請求項1,2,3又は4記載の可塑化装置。
    6
    The plasticizing device according to claim 5, wherein a plurality of rotary valves are hermetically connected via a connecting pipe, and a suction pump for sucking air from the connecting pipe to the outside is attached to the connecting pipe. 【請求項6】 複数のロータリバルブを連結管を介して密閉接続するとともに、この連結管に、連結管から空気を外部に吸引する吸引ポンプを取り付けた請求項5記載の可塑化装置。
    7
    The plasticizer according to claim 5, wherein a plurality of rotary valves are hermetically connected via a material storage unit, and a suction pump for sucking air from the material storage unit is attached to the material storage unit. .. 【請求項7】 複数のロータリバルブを材料貯蔵部を介して密閉接続するとともに、この材料貯蔵部に、材料貯蔵部から空気を外部に吸引する吸引ポンプを取り付けた請求項5記載の可塑化装置。
    8
    The plasticizing device according to claim 5, wherein a plurality of rotary valves are arranged in a plurality of rows on the same rotating shaft and rotated by a single drive motor to supply materials into a cylinder. 【請求項8】 複数のロータリバルブを同一回転軸上に多列に配置し、単一の駆動モータによって回転させて、シリンダ内に材料を供給する構成とした請求項5記載の可塑化装置。
    9
    The plasticizer according to claim 1, 2, 3 or 4, wherein a shut-out valve is hermetically connected to an upper portion of a rotary valve. 【請求項9】 ロータリバルブの上部にシャットアウトバルブを密閉接続した請求項1,2,3又は4記載の可塑化装置。
    10
    The plasticization according to claim 9, wherein the shut-out valve is hermetically connected to the upper part of the rotary valve via a connecting pipe, and a suction pump that sucks air from the connecting pipe to the outside is attached to the connecting pipe. apparatus. 【請求項10】 ロータリバルブの上部に連結管を介してシャットアウトバルブを密閉接続するとともに、この連結管に、連結管から空気を外部に吸引する吸引ポンプを取り付けた請求項9記載の可塑化装置。
  2. 11
    The ninth aspect of the present invention, wherein a shut-out valve is hermetically connected to the upper part of the rotary valve via a material storage part, and a suction pump for sucking air from the storage part to the outside is attached to the material storage part. Plasticization device. 【請求項11】 ロータリバルブの上部に材料貯蔵部を介してシャットアウトバルブを密閉接続するとともに、この材料貯蔵部に、貯蔵部から空気を外部に吸引する吸引ポンプを取り付けた請求項9記載の可塑化装置。
  3. 12
    A method of performing plasticization while supplying a material into a cylinder into which a screw is inserted by a rotary valve, wherein the material is supplied into the cylinder while the rotary valve is continuously or intermittently rotated. A plasticizing method characterized by plasticizing. 【請求項12】 スクリュを挿入したシリンダ内に、ロータリバルブによって材料を供給しながら可塑化を行なう方法であって、上記ロータリバルブを連続回転、又は、間欠回転させながら材料をシリンダ内に供給して可塑化することを特徴とした可塑化方法。
  4. 13
    A method of plasticizing while supplying a material to a cylinder into which a screw is inserted by a rotary valve, wherein the rotation speed of the rotary valve is synchronized with the rotation speed of the screw to obtain the rotation speed of the screw. A plasticization method characterized by supplying the corresponding material into a cylinder for plasticization. 【請求項13】 スクリュを挿入したシリンダ内に、ロータリバルブによって材料を供給しながら可塑化を行なう方法であって、上記ロータリバルブの回転速度をスクリュの回転速度に同期させ、スクリュの回転速度に応じた材料をシリンダ内に供給して可塑化することを特徴とした可塑化方法。
Independent claims3