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Online mixing injection-molding device

A technology of injection molding and injection device, which is applied in the direction of valve device, valve operation/release device, sliding valve, etc. It can solve the problems of long molding cycle and need to improve production efficiency, so as to improve production efficiency, shorten molding cycle, flow The effect of track size reduction

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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  • Online mixing injection-molding device
  • Online mixing injection-molding device
  • Online mixing injection-molding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: As shown in the figure, an online mixing injection molding device includes a feeding system 7, an injection system, a clamping system 8 and a control system 9. The injection system includes an extrusion device 3, an injection device 4, a pressure-holding The device 5 and the switching valve device 10, the feeding system 7 is connected with the extrusion device 3, the extrusion device 3, the injection device 4, and the pressure maintaining device 5 are respectively connected with the switching valve device 10, and the switching valve device 10 passes through the nozzle 6 Connected with the clamping system 8, the switching valve device 10 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 extrusion device 3, injection device 4, pressure maintaining device 5 and nozzle 6 in the machine correspond to the first valve body passage 11, the second valve body passage 12, the third valve ...

Embodiment 2

[0024] Embodiment 2: As shown in the figure, an online mixing injection molding device includes a feeding system 7, an injection system, a clamping system 8 and a control system 9, and the injection system includes an extrusion device 3, an injection device 4, a pressure-holding The device 5 and the switching valve device 10, the feeding system 7 is connected with the extrusion device 3, the extrusion device 3, the injection device 4, and the pressure maintaining device 5 are respectively connected with the switching valve device 10, and the switching valve device 10 passes through the nozzle 6 Connected with the clamping system 8, the conversion valve device 10 includes a valve body 1, a valve core 2, a motor and a linear motion hydraulic cylinder (not shown in the figure), the valve core 2 is located in the valve body 1 and can be placed on the valve body 1 Sliding inside, the valve body 1 is provided with a first valve body channel 11 and a second valve body respectively com...

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Abstract

The invention discloses an online mixing injection-molding device which comprises a feeding system, an injection system, a mold locking system and a control system. The injection system comprises an extrusion unit, an injection unit, a pressure maintaining unit and a change-over valve unit. The change-over valve unit is connected with the mold locking system through an injection nozzle and comprises a valve body and a valve element, and the valve element is located in the valve body. The change-over valve unit is characterized in 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 communicate with the extrusion unit, the injection unit, the pressure maintaining unit and the injection nozzle of the online mixing injection-molding device in a one-to-one corresponding mode, a metering channel set, an injection channel set and a pressure maintaining channel set are arranged in the valve element, distributed at intervals in the axial direction and independent, and the valve body is provided with a valve element movement driving mechanism. The online mixing injection-molding device has the advantages that due to the fact that the valve element of the change-over valve unit is provided with the pressure maintaining channel set, feeding of the injection unit is carried out in the pressure maintaining stage, and compared with traditional online mixing injection-molding machines, under the condition of the same runner size, by adopting the change-over valve unit, the molding cycle of the online mixing injection-molding device can be shortened, and 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 an on-line mixing injection molding device. 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 to serious damage to the molecular structure of the plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/03B29C45/17F16K3/26F16K3/314F16K31/12
CPCB29C45/03B29C45/17B29C45/58B29C45/77B29C2045/776B29C2945/76498F16K3/262F16K3/314F16K31/12
Inventor 陈炽辉施海明刘玉鹏邓俊钧
Owner NINGBO SHUANGMA MASCH IND CO LTD