Rotary locking control method of plastic injecting nozzle

A technology of injection nozzle and control method, which is applied in the field of plastic molding processing technology, can solve the problems of the degree control of nozzle channel opening, insufficient response, slow nozzle opening and closing speed, etc., and achieves the improvement of reaction speed, reduction of overheating decomposition, and structure compact effect

Inactive Publication Date: 2009-10-28
FUJIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0005] ①The action of the thimble is passive, relying on the pressure of the plastic melt to retreat to open the injection channel of the nozzle, so the opening and closing speed of the nozzle is slow and the response is not sensitive enough;
[0006] ② The degree of opening of the nozzle channel cannot be controlled according to the requirements of the plastic injection molding process. For products with a small injection volume or when the plastic melt needs to be accurately measured, it is difficult to meet the use requirements;
[0007] ③The space occupied by the thimble-type locking structure is relatively large, and it is difficult to realize the miniaturization of the locking nozzle

Method used

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  • Rotary locking control method of plastic injecting nozzle
  • Rotary locking control method of plastic injecting nozzle
  • Rotary locking control method of plastic injecting nozzle

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Embodiment Construction

[0021] see Figure 1a with Figure 1b As shown, the rotation locking control method of the plastic injection nozzle of the present invention mainly divides the injection channel 10 of the injection nozzle into two parts: a fixed injection channel 11 and a rotating injection channel 31, and by rotating the rotation The injection channel 31 and the fixed injection channel 11 have two states of staggering each other to close the injection channel 10 and aligning with each other to open the injection channel 10 . The rotating material injection channel 31 is additionally provided with a driving device 4, and by setting the operation of the driving device 4, the start and end time, The speed of opening and closing and the degree of opening and closing. During the plastic injection process, a temperature control device 5 is used to control the temperature of the plastic melt in the plastic injection channel 10 at the same time.

[0022] see Figure 2 to Figure 4 As shown, a schem...

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Abstract

The invention provides a rotary locking control method of a plastic injecting nozzle. Charging passages of an injecting nozzle are divided into a fixed charging passage and a rotary charging passage. The rotary charging passage and the fixed charging passage can be mutually staggered to close the charging passages or mutually aligned to open the charging passages by rotating the rotary charging passage. The method of the invention enables the nozzle to be rapidly opened or closed with sensitive reaction and easy control, and a locking structure used by the method has small occupied space size.

Description

【Technical field】 [0001] The invention relates to a plastic molding process, in particular to a method for controlling rotation and locking of plastic injection nozzles 【Background technique】 [0002] In the plastic injection molding production process, if the viscosity of the plastic raw material is low, salivation is prone to occur, or there are specific requirements for certain molding processes (such as injection molding of microporous plastic products), it is necessary to use a lock-type injection nozzle. [0003] There are mainly two types of existing lock-type plastic injection nozzles, one is a spring lock-type nozzle, and the other is a hydraulic-controlled lock-type nozzle. The common feature of these two lock-type nozzles is that the injection channel of the nozzle The closing and opening adopt a thimble-type locking structure, that is, relying on the cone at the end of the thimble to block the injection channel of the nozzle to block the flow of plastic melt. Fo...

Claims

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Application Information

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IPC IPC(8): B29C45/23B29C45/76
Inventor 范有发
Owner FUJIAN UNIV OF TECH
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