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Switch valve device of online mixing injection molding machine and control method of switch valve device

A technology for switching valves and injection molding machines, which is applied in the direction of valve devices, valve operation/release devices, and valve details, etc., which can solve problems such as the need to improve production efficiency and long molding cycle, so as to shorten the molding cycle, improve production efficiency, and reduce The effect of equipment cost

Active Publication Date: 2016-10-26
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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  • Switch valve device of online mixing injection molding machine and control method of switch valve device
  • Switch valve device of online mixing injection molding machine and control method of switch valve device
  • Switch valve device of online mixing injection molding machine and control method of switch 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 along the circumferential direction in the valve core 2. The metering channel group 21 is a metering three-way channel 211, and the injection channel group 22...

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 first one-to-one communication with the extrusion device 3, the injection device 4, the pressure maintaining device 5 and the nozzle 6 in the online mixing injection molding machine. 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-holding channel group 23, the metering channel group 21, the injection channel group 22 and the pressure-holding channel group 23 are arranged in sequence...

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Abstract

The invention discloses a switch valve device of an online mixing injection molding machine. The switch valve device comprises a valve body and a valve core. The valve core is located in the valve body. The switch valve device has the characteristics that the valve body is provided with a first valve body channel, a second valve body channel, a third valve body channel and a fourth valve body channel which are used for communicating with an extrusion device, an injection device, a pressurizer and a nozzle in the online mixing injection molding machine in a one-to-one correspondence mode; a metering channel set, an injection channel set and a pressurizing channel set which are mutually independent and distributed at intervals in the axial direction are arranged in the valve core; and the valve body is provided with a valve core moving driving mechanism. The switch valve device has the advantages that due to the fact that the valve core is provided with pressurizing channels, the injection device conducts feeding in the pressurizing stage; compared with a traditional online mixing injection molding machine, under the circumstance of the same runner size, with the usage of the switch valve device, the forming cycle of the online 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): B29C45/03B29C45/17F16K11/085
CPCB29C45/03B29C45/17B29C45/54B29C45/58B29C45/762B29C2945/76648B29C2945/76658F16K11/0856F16K31/12
Inventor 陈炽辉施海明
Owner NINGBO SHUANGMA MASCH IND CO LTD