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Plasticizing unit screw with grooves of varying angle and depth

A technology of screw and taper, applied in the field of screw of plasticizing device

Active Publication Date: 2021-02-02
DAVIS STANDARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The barrel has an inner wall

Method used

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  • Plasticizing unit screw with grooves of varying angle and depth
  • Plasticizing unit screw with grooves of varying angle and depth
  • Plasticizing unit screw with grooves of varying angle and depth

Examples

Experimental program
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Embodiment Construction

[0042] Such as figure 2 As shown, the plasticizing device is represented by numeral 200 as a whole. The plasticizing device comprises a cylindrical barrel 2 defining an inner surface 3 . The barrel 2 comprises an inlet 4 having a feed hopper 7 connected thereto. The feed hopper 7 cooperates with the inlet 4 to supply the cartridge 2 with one or more solid particulate resin materials and any additives or reagents. Barrel 2 includes an outlet 6 for discharging the plasticized molten extrudate into a die or die (not shown). A heating element 11 is located outside the cartridge 2 to supply heat to the cartridge 2 .

[0043] Such as figure 2 As shown, the screw 10 is axially supported for rotation within the barrel 2 along the longitudinal axis Al. A screw 10 extends from the inlet 4 to the outlet 6 . The screw 10 comprises a helical flight 13 extending radially around the core 12 in a first direction, for example in a right hand thread direction. The spiral pattern 13 com...

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PUM

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Abstract

A screw for a plasticizing unit has one or more helical flights. A portion of the screw has a plurality of advancing grooves arranged in discrete turns cut into the screw. The advance slot is sized to accommodate the material in the slot as it is fed through the barrel. The screw has a plurality of discontinuous cross-cut grooves traversing one or more advancing grooves. The cross-cut grooves have a second helix angle greater than the first helix angle and less than ninety degrees; and / or one or more cross-cut grooves have a third helix angle of about ninety degrees.

Description

technical field [0001] The present invention relates to a plasticizing device screw that can rotate in a barrel to extrude molten resin material. More particularly, the invention relates to the longitudinal section of the screw designed to recirculate the material for thorough mixing and melting of the material through grooves of different angles having different depths and deep tapers. Background technique [0002] A plasticizing unit typically receives polymer or thermoplastic resin pellets, granules or powder from an inlet, then heats and processes the resin to convert it to a molten or molten state. Molten or molten material is sent under pressure through a restricted outlet or spout to form a finished product. The molten material exiting the device is expected to be completely melted and uniformly mixed, with uniform temperature, viscosity, color and composition. [0003] A typical plasticizing unit consists of an elongated cylindrical barrel, which is heated, usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/505B29C48/395B29C48/60B29C48/64
CPCB29C48/53B29C48/505B29C48/56B29C48/397B29C48/03B29C48/64B29C48/67B29C48/832B29C48/535B29C48/655B29B7/429B29C48/605B29C48/615B29C48/60B29B7/826B29C48/54B29C48/59
Inventor 约翰·克里斯蒂亚诺
Owner DAVIS STANDARD