JPH0426717U

JPH0426717U -

Info

Publication number: JPH0426717U
Application number: JP6942090U
Authority: JP
Priority date: 1990-06-28
Filing date: 1990-06-28
Publication date: 1992-03-03
Anticipated expiration: 2004-02-09
Also published as: JPH065143Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す部分側面図、
第２図は従来例を示す射出成形機の部分断面図、
第３図は第２図に示す射出成形機に使用されるス
クリユの部分側面図を各々示す。図において、Ｚｒ……スクリユ後部、Ｔｐ……
テーパー部、Ｇ……ギヤツプ、３……スクリユ、
３ａ……スクリユ後部Ｚｒの溝部、５……スクリ
ユ後部Ｚｒのフライト部、５′……摺接フライト
部、Ｄｓ……摺接フライト部の径、Ｄｆ……最小
径フライト部の径。 FIG. 1 is a partial side view showing an embodiment of the present invention;
Figure 2 is a partial sectional view of a conventional injection molding machine;
3 each shows a partial side view of the screw used in the injection molding machine shown in FIG. 2. FIG. In the figure, Zr... rear part of the screw, Tp...
Tapered part, G...Gap, 3...Screw,
3a...Groove portion of rear part Zr of screw, 5...Flight part of rear part Zr of screw, 5'...Sliding flight part, Ds...Diameter of sliding flight part, Df...Diameter of minimum diameter flight part.

補正平３．９．１７考案の名称を次のように補正する。考案の名称インラインスクリユ式射出成形
機実用新案登録請求の範囲を次のように補正する
。Amendment 3/9/17 The name of the invention is amended as follows. Title of the invention: In-line screw type injection molding machine The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】スクリユが回転且つ進退自在に内挿されている
射出シリンダ後端部に材料供給部を設け、前記材
料供給部から帯状材料を供給して成形を行うイン
ラインスクリユ式射出成形機において、該射出シリンダ内壁面と外面の一部が摺接して
回転・進退する摺接フライト部を具備するスクリ
ユ部分に連続して設けられ且つ帯状材料が供給さ
れるスクリユ後部のフライト部の外径が、少なく
ともスクリユのストローク長さに亘り、前記摺接
フライト部の外径よりも小径に形成されており、前記スクリユ後部のフライト部において、少な
くとも一部が摺接フライト部との境界から後部側
に向かつて縮径するテーパー状に形成され、スクリユが前進する際に、最小外径のフライト
部外面と射出シリンダ内壁面との間に、帯状材料
が介在可能なギヤツプが形成されていることを特
徴とするインラインスクリユ式射出成形機。[Scope of Claim for Utility Model Registration] In-line screw type in which a material supply section is provided at the rear end of the injection cylinder in which a screw is rotatably and movably inserted, and a strip material is supplied from the material supply section for molding . In an injection molding machine, a flight part at the rear of the screw is provided continuously with the screw part, which has a sliding flight part where the inner wall surface and part of the outer surface of the injection cylinder rotate and move forward and backward in sliding contact with each other, and to which a strip material is supplied. The outer diameter of the screw is smaller than the outer diameter of the sliding flight part over at least the stroke length of the screw, and at least a part of the flight part at the rear of the screw is at the boundary with the sliding flight part. It is formed into a tapered shape that decreases in diameter toward the rear side, and when the screw moves forward, a gap is formed between the outer surface of the flight part with the minimum outer diameter and the inner wall surface of the injection cylinder , in which a strip of material can be inserted. An in-line screw type injection molding machine .

Claims

[Scope of Claim for Utility Model Registration] In-line screw type in which a material supply section is provided at the rear end of the injection cylinder in which a screw is rotatably and movably inserted, and a strip material is supplied from the material supply section to perform molding. In an injection molding machine, a flight part at the rear of the screw is provided continuously with the screw part, which has a sliding flight part where the inner wall surface and part of the outer surface of the injection cylinder rotate and move forward and backward in sliding contact with each other, and to which a strip material is supplied. The outer diameter is smaller than the outer diameter of the sliding flight part over at least the stroke length of the screw, and at least a part of the flight part at the rear of the screw extends from the boundary with the sliding flight part. It is formed in a tapered shape that decreases in diameter toward the rear side, and when the screw moves forward, a gap is formed between the outer surface of the slight part with the minimum outer diameter and the inner wall surface of the injection cylinder, in which a strip of material can be inserted. Features an in-line screw type injection molding machine.