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Compressing glue injection method of injection molding machine

A technology for injection molding machines and injection cylinders, which is applied in the field of injection molding technology, and can solve problems such as unstable injection volume, insufficient sealing of nozzles, and impact on product quality.

Active Publication Date: 2013-12-11
SINO HLDG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the insufficient seal of the injection nozzle of the current injection molding machine, when the pressure in the front cavity of the material tube is slightly higher, there will be a problem of overflow and unstable injection volume, which will easily affect the quality of the product, especially the weight of the product. and size

Method used

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  • Compressing glue injection method of injection molding machine
  • Compressing glue injection method of injection molding machine
  • Compressing glue injection method of injection molding machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] Such as Figure 1-3 As shown, the compression injection device of the injection molding machine includes a material tube 6, on which a hopper 5 is installed, and a screw 4 is arranged inside the material tube 6, and the screw 4 is driven by a sol motor to rotate the sol, and is driven by an injection cylinder Inject glue. A nozzle 7 is installed at the outlet of the material tube 6 , and a non-return nozzle 8 is installed on the nozzle 7 and can move left and right along the inner wall of the nozzle 7 .

[0016] The anti-return nozzle 8 is located at one end of the outlet of the material tube 6 to limit the limit weight 84, the limit weight 84 is slightly larger than the inner diameter of the nozzle 7, and the right end of the nozzle 7 is formed with a spherical shape that matches the size of the limit weight 84. structure. The outer wall of the other end of the anti-reflection nozzle 8 is screwed with a limiting nut 81 . The center axis of the anti-return nozzle 8 i...

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Abstract

The invention discloses a compressing glue injection method of an injection molding machine, which comprises the steps that a compressing glue injection device is selected; a non-return injection nozzle is mounted on an injection nozzle of the compressing glue injection device; a granular resin raw material is added to a hopper; a glue melting motor is started for glue melting; a screw rod is pushed to move rightwards to reach a set glue melting completion position with escalation of the quantity of molten resin in a material tube front cavity in a glue melting process; an ejection oil cylinder pushes the glue melting motor, the screw rod, a screw rod head and a meson to move leftwards, so that the molten resin in the material tube front cavity flows rightwards; in the process, the material tube front cavity forms a seal cavity until pressure of the molten resin in the material tube front cavity reaches the set density pressure; and finally the ejection oil cylinder drives the whole device to move leftwards, so that a flow channel opening of the non-return injection nozzle is opened, and the high-pressure resin in the non-return injection nozzle is injected into a mold. The method has the characteristics that glue injection is stable and the stability of weight and size of a product can be ensured.

Description

technical field [0001] The invention relates to an injection molding process, in particular to a compression injection method for an injection molding machine. Background technique [0002] The injection device is an essential part of the injection molding machine. Due to the insufficient seal of the injection nozzle of the current injection molding machine, when the pressure in the front cavity of the material tube is slightly higher, there will be a problem of overflow and unstable injection volume, which will easily affect the quality of the product, especially the weight of the product. and size. Especially when the weight of the product is small, this unstable factor is more obvious. Contents of the invention [0003] In order to overcome the defects in the prior art, the invention provides a compression injection device and an injection method of an injection molding machine capable of ensuring product weight and dimensional stability. [0004] The technical solut...

Claims

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Application Information

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IPC IPC(8): B29C45/54
CPCB29C2045/528
Inventor 李君
Owner SINO HLDG GRP
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