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Plasticizing screw for injection molding machine

A technology of injection molding machine and plasticizing screw, which is applied in the field of plasticizing screw for injection molding machine, can solve the problems of uneven metering and retention, and achieve the effect of reducing the generation of decomposition gas

Active Publication Date: 2011-03-23
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since the unmelted resin clogs the compression part, as a result, there is a concern about the occurrence of dissociated gas caused by uneven metering and stagnation.

Method used

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  • Plasticizing screw for injection molding machine
  • Plasticizing screw for injection molding machine
  • Plasticizing screw for injection molding machine

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Experimental program
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Embodiment Construction

[0033] First, the principle of the plasticizing screw for an injection molding machine (hereinafter referred to as "screw") of the present invention will be described.

[0034] Generally, the heat energy necessary for melting the resin and additives (hereinafter, resin and additives are referred to as "resin") supplied to the heating cylinder of the injection molding machine is transferred from the heating cylinder (hereinafter referred to as "resin"). Heat transfer energy") and heat energy generated by friction / shear compression when transported to the front of the screw is obtained.

[0035] The heat transfer energy from the heating cylinder is uniformly given to the resin, but it is difficult to give a large amount of heat energy to the resin in a short time. On the contrary, although the friction / shear compression energy is partial, it can impart more energy to the resin in a short time.

[0036] Such as figure 1 As shown, the screw includes a supply part F, a compression ...

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Abstract

The present invention relates to a plasticizing screw for an injection molding machine. The screw of the injection molding machine comprises a feeding part, a compressing part and a metering part. An outer diameter of a spiral sheet on the compressing part is smaller than that of the spiral sheets formed on the metering part and the feeding part. In the molten resin, the liquid-phase resin easily passes through the spiral sheets and flows to the front part of the screw. On the other aspect, the solid-phase resin is hanged to a step part which is provided in front of a spiral groove and is conveyed to the front side of the screw along the spiral groove (3) when bears shear compression.

Description

technical field [0001] The present invention relates to a plasticizing screw for an injection molding machine, and particularly relates to a plasticizing screw capable of reducing the friction / shear compression given to resin and additive by its compression portion, and capable of giving shear compression to resin and additive and reducing the generation of decomposition gas of resin and additive Plasticizing screw for injection molding machines. Background technique [0002] In general, an injection molding machine includes an injection device, a mold clamping device, and a control device for controlling the injection molding machine. The injection device includes a heating cylinder for heating resin as a raw material into a molten state. A plasticizing screw is arranged in the heating cylinder, and the plasticizing screw rotates in the heating cylinder to mix the resin and measure the amount of the molten resin to be injected, and further, in order to inject the measured ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/60B29C48/52
CPCB29C47/6018B29C47/6012B29C48/52B29C48/53
Inventor 浅冈裕泰大森瑛石黑俊夫白石亘今村博史
Owner FANUC LTD
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