JPS6190509U

JPS6190509U -

Info

Publication number: JPS6190509U
Application number: JP17627584U
Authority: JP
Priority date: 1984-11-20
Filing date: 1984-11-20
Publication date: 1986-06-12

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の一実施例を示し
第１図は側面図、第２図は第１図の２−２線断面
図、第３図はサブフライトの展開図、第４図ない
し第７図は第２図に相当する本考案の他の実施例
における断面図である。１１……スクリユ、１２……主フライト、１３
……サブフライト。 Figures 1 to 3 show one embodiment of the present invention; Figure 1 is a side view, Figure 2 is a sectional view taken along line 2-2 in Figure 1, Figure 3 is a developed view of the sub-flight, and Figure 4 is a side view. 7 to 7 are cross-sectional views of other embodiments of the present invention corresponding to FIG. 2. 11... Skrill, 12... Main Flight, 13
...Sub flight.

Claims

[Claims for Utility Model Registration] (1) A screw for plastic molding in which the apex of the sub-flight is non-flat compared to the main flight whose apex is flat. (2) The screw for plastic molding according to claim 1, characterized in that the cross-sectional shape of the sub-light is triangular. (3) The top of the sub-flight is rectangular in cross-section.
The screw for plastic molding according to claim 1, which is characterized in that it has a square shape. (4) The screw for plastic molding according to claim 1, wherein the cross-sectional shape of the sub-flight is triangular with a small circular arc at the top. (5) Utility model registration claim 1 characterized in that the cross-sectional shape of the sub-flight is approximately semicircular
Screw for plastic molding as described in Section 1. (6) The screw for plastic molding according to claim 1, wherein the cross-sectional shape of the sub-flight is triangular with the top portion obliquely removed. (7) The screw for plastic molding according to claim 1 of the utility model registration, characterized in that the gap between the sub-flights provided in the compression zone and the main flight gradually narrows as the sub-flights move toward the metering zone. . (8) In the sub-flights established from the compression zone to the metering zone, in the compression zone, the gap between the main flight and the main flight gradually narrows as you move toward the metering zone, and in the metering zone, the gap between the main flight and the main flight is gradually narrowed. A screw for plastic molding according to claim 1, characterized in that a gap between the main flight and the main flight is maintained.