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Multifunctional reacting, injecting and moulding equipment

An injection molding and multi-functional technology, which is applied in the field of multi-functional reaction injection molding equipment, can solve the problems such as the difficulty of reaction injection molding operation, and achieve the effect of preventing sedimentation and clogging and ensuring smooth transportation

Inactive Publication Date: 2015-06-24
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the existing reaction molding equipment is like the existing reaction molding equipment such as the Chinese patent announcement number is CN2714285Y, the announcement date is August 3, 2005, and the name is "polyurethane reaction injection molding equipment". Polyurethane reaction injection molding equipment is disclosed in the manual , including A material tank, B material tank and pouring head, the inside of the pouring head is equipped with a mixing device, A material tank and B material tank are respectively connected to the mixing device through A and B material delivery pipes, and the A and B material delivery pipes are respectively Metering pumps are installed, heaters are installed on A and B barrels, agitators are installed inside A and B barrels, and screw-shaped mixing guns are installed in the mixing device. This kind of reaction injection molding equipment can be used in ordinary reaction molding equipment. However, due to the addition of solid reinforcing materials, the dispersion of reinforcing materials, the process of transportation will produce problems such as sedimentation, clogging and wear of equipment parts. run

Method used

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  • Multifunctional reacting, injecting and moulding equipment

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0022] When the present invention is used in a common polyurethane reaction injection system, vacuumize material tanks A and B and fill them with low-pressure nitrogen, add polymer polyol and its ingredients into material tank A, and add isocyanate and its ingredients into material B according to product requirements. In the barrel, turn on the stirring and heating system. After the material is evenly mixed, close the injection valve and the return valve, turn on the hydraulic system to reset the piston of the cylinder pump to the initial position, and then run the screw pump to start injecting the material into the cylinder pump to the set position. The pump stops and enters the low-pressure cycle, the feed valve is closed, the discharge valve and the return valve are opened, and the hydraulic pump runs at a low speed to return the material in the cylinder pump to the material barrel through the mixer, the system closes the feed valve and return valve, and opens The mixing val...

example 3

[0024] When the present invention is used in the nano-silica reinforced polydicyclopentadiene reaction injection system, two equal amounts of surface-modified dry nano-silica are respectively added to barrels A and B, and the glass fiber is removed by vacuuming. After absorbing the air, then close the vacuum and fill it with low-pressure nitrogen protection; add dicyclopentadiene, co-catalyst and its ingredients into the A material tank, add dicyclopentadiene, the main catalyst and its ingredients into the B material tank, and open Stirring and heating, after the material is evenly mixed, close the injection valve and return valve, open the hydraulic system to reset the cylinder pump piston to the initial position, the screw pump starts to inject the material into the cylinder pump to the set position, and then the screw pump stops and enters the low-pressure cycle , the feed valve is closed, the discharge valve and the return valve are opened, and the hydraulic pump runs at a ...

example 4

[0026]When the present invention is used in the common polydicyclopentadiene reaction injection system, the A and B barrels are vacuumed and filled with low-pressure nitrogen, and dicyclopentadiene, cocatalyst and its ingredients are added to the A barrel, and the dicyclopentadiene Diene, main catalyst and its ingredients are added to material barrel B, stirring and heating are turned on, and after the materials are evenly mixed, the injection valve and the return valve are closed, and the hydraulic system is turned on to reset the piston of the cylinder pump to the initial position, and the screw pump starts to pump the materials After the injection cylinder pump reaches the set position, the screw pump stops and enters the low-pressure cycle, the feed valve is closed, the discharge valve and the return valve are opened, and the hydraulic pump runs at a low speed to return the material in the cylinder pump to the material barrel through the mixer, and the feed valve is closed. ...

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Abstract

The invention discloses multifunctional reacting, injecting and moulding equipment which comprises a material A bucket, a material B bucket and a pouring head with a mixer. The material A bucket and the material B bucket are respectively provided with a material A discharge port and a material B discharge port; the material A discharge port and the material B discharge port are respectively connected with a material A conveying system and a material B conveying system which are used for conveying materials for the mixer; the material A conveying system and the material B conveying system respectively comprise a material A conveying pipe and a material B conveying pipe; the material A conveying pipe and the material B conveying pipe are respectively provided with a material A hydraulic cylinder pump and a material B hydraulic cylinder pump; the material A hydraulic cylinder pump and the material B hydraulic cylinder pump respectively comprises a material A piston and a material B piston as well as a material A piston connection rod and a material B piston connection rod; and the material A conveying system and the material B conveying system further respectively comprise a material A hydraulic system and a material B hydraulic system used for driving the material A piston connection rod and the material B piston connection rod respectively. Because the cylinder pumps are used for carrying out low-pressure circulating and high-pressure injecting and moulding for the material A and the material B, the precipitation and the clogging of the solid filler are prevented, and the materials can be conveyed smoothly. The multifunctional reacting, injecting and moulding equipment is suitable for both the common reacting, injecting and moulding system and the reacting, injecting and moulding system provided with a reinforcing material.

Description

technical field [0001] The invention relates to the field of polymer material molding processing equipment, in particular to a multifunctional reaction injection molding equipment, which is suitable for polyurethane, dicyclopentadiene, epoxy resin, nylon 6, polyurea, silicone Molding process of resin etc. Background technique [0002] Reaction injection molding is a new process in the field of polymers. It is to mix two or more liquid raw materials with high chemical activity and low relative molecular weight at a certain temperature and through high pressure to make them collide with each other. And immediately injected into the sealed mold cavity to complete the reaction of polymerization, cross-linking and curing, and form the process engineering of the product. This technology combines the polymerization reaction with injection molding, and has the advantages of flexible raw material preparation, short production cycle and low cost. It is low cost and environmentally fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/03B29C45/17B29C45/47
Inventor 张玉清赫玉欣张航李俊贤
Owner HENAN UNIV OF SCI & TECH