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Conversion valve device of on-line mixing injection molding machine and control method of conversion valve device

A technology for converting valves and injection molding machines, applied in valve devices, valve operation/release devices, valve details, etc., can solve the problems of long molding cycle and production efficiency to be improved, and achieve improved production efficiency, shortened molding cycle, flow rate and other problems. The effect of track size reduction

Inactive Publication Date: 2015-12-02
NINGBO SHUANGMA MASCH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current online mixing injection molding machine injects the plastic melt into the mold through the injection cylinder, and the injection cylinder maintains the pressure on the melt within a set time, which makes the molding cycle relatively long and the production efficiency is relatively long. still needs to be improved

Method used

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  • Conversion valve device of on-line mixing injection molding machine and control method of conversion valve device
  • Conversion valve device of on-line mixing injection molding machine and control method of conversion valve device
  • Conversion valve device of on-line mixing injection molding machine and control method of conversion valve device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: As shown in the figure, a switching valve device for an online mixing injection molding machine includes a valve body 1 and a valve core 2. The valve core 2 is located in the valve body 1 and can slide in the valve body 1. The valve body 1 The first valve body passage 11, the second valve body passage 12, the third valve body passage 11, the second valve body passage 12, and the third The valve body channel 13 and the fourth valve body channel 14, the valve core 2 is provided with a metering channel group 21, an injection channel group 22 and a pressure maintaining channel group 23 distributed along the axial interval and mutually independent, the metering channel group 21, the injection channel group The group 22 and the pressure maintaining channel group 23 are arranged in sequence and are staggered in the circumferential direction in the valve core 2. The metering channel group 21 includes the first metering channel 211 and the second metering channel 21...

Embodiment 2

[0027] Embodiment 2: As shown in the figure, a conversion valve device for an online mixing injection molding machine includes a valve body 1, a valve core 2, a motor and a linear motion hydraulic cylinder (not shown in the figure), and the valve core 2 is located at the valve body 1 and can slide in the valve body 1, the valve body 1 is provided with the extruder 3, the injection cylinder 4, the pressure holding cylinder 5 and the nozzle 6 in the online mixing injection molding machine in one-to-one communication. A valve body passage 11, a second valve body passage 12, a third valve body passage 13, and a fourth valve body passage 14. The valve core 2 is provided with metering passage groups 21 and injection passage groups distributed along the axial interval and mutually independent. 22 and the pressure maintaining channel group 23, the metering channel group 21, the injection channel group 22 and the pressure maintaining channel group 23 are arranged in sequence and are fac...

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PUM

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Abstract

The invention discloses a conversion valve device of an on-line mixing injection molding machine. The conversion valve device comprises a valve body and a valve element, wherein the valve element is located in the valve body. The conversion valve device is characterized in that the valve body is provided with a first valve body passage, a second valve body passage, a third valve body passage and a fourth valve body passage which are communicated with an extrusion machine, an injection cylinder, a pressure maintaining cylinder and a jet nozzle in the on-line mixing injection molding machine in a one-to-one correspondence mode; a metering passage set, an injection passage set and a pressure maintaining passage set which are distributed at intervals in the axial direction and are mutually independent are arranged in the valve element; the valve body is provided with a valve element movement driving mechanism. The conversion valve device has the advantages that the valve element is provided with the pressure maintaining passage, so that materials are fed into the injection cylinder in the pressure maintaining stage; compared with a traditional on-line mixing injection molding machine, under the condition of the same runner size, by using the conversion valve device, the formation period of the on-line mixing injection molding machine can be shortened, and the production efficiency can be improved by 10-20%.

Description

technical field [0001] The invention relates to an on-line mixing injection molding machine, that is, a device combining an injection molding machine and an extruder, in particular to a switching valve device of an on-line mixing injection molding machine and a control method thereof. Background technique [0002] As we all know, injection molding machines and injection molding processes are widely used in the manufacture of plastic parts. At present, the injection molding machine and the extruder are basically two independent devices. The extruder mainly performs modification and granulation of plastic raw materials, while the injection molding machine performs injection molding of the modified granulation material, which is equivalent to a "two-step method". forming. However, this molding method not only makes the cost of raw materials higher, but also in the injection molding process, the plastic is heated twice during modification, granulation and molding, which leads t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/54B29C45/58B29C45/76F16K31/12F16K11/085
CPCB29C45/03B29C45/17B29C45/54B29C45/58B29C45/762B29C2945/76648B29C2945/76658F16K11/0856F16K31/12
Inventor 汉斯·沃伯陈炽辉施海明
Owner NINGBO SHUANGMA MASCH IND CO LTD