CN211645092U - Preparation equipment of self-skinning polyurethane composition for heat insulation and wave absorption - Google Patents

Abstract

The utility model discloses a thermal-insulated preparation equipment of inhaling ripples polyurethane composition from skinning, its characterized in that: including workstation, injection molding machine and compounding jar, the workstation is fixed with the injection molding machine, and the top of injection molding machine is fixed with the compounding jar, and compounding jar bottom intercommunication has the blowing valve, and the blowing valve intercommunication the entry of injection molding machine, one side of injection molding machine are equipped with the level and inject the pole, and workstation fixed mounting has longitudinal rail, and longitudinal rail's top surface activity gomphosis has the sliding block, and the center of sliding block top surface is rotated and is connected with the rotary position platform, the top fixed mounting of rotary position platform has the foaming mould, and mould one side all is equipped with the pan feeding mouth, and the level is injected the pole and is docked with pan feeding mouth intermittent type nature cooperation, and the one end of longitudinal rail is fixed with flexible actuating mechanism, and flexible actuating mechanism connects and. It need not in mould inner chamber spraying mould lacquer, has improved the environment of work area, has improved work efficiency.

Description

Preparation equipment of self-skinning polyurethane composition for heat insulation and wave absorption

Technical Field

The utility model relates to a polyurethane injection moulding production technical field, concretely relates to thermal-insulated preparation equipment who inhales from skinning polyurethane composition of ripples.

Background

The polyurethane material is a new universal organic polymer material, and is widely applied to various fields of national economy due to excellent performance, and the product application field relates to light industry, chemical industry, electronics, textiles, medical treatment, buildings, building materials, automobiles, national defense, aerospace, aviation and the like.

The polyurethane soft foam is an ideal cushion material, and the cushion material is also the application field with the largest soft foam consumption and is applied to seats, sofas, mattresses and the like; the sound absorbing material-the polyurethane flexible foam with the holes has good sound absorbing and shock absorbing functions and can be used as an indoor sound insulating material; fabric composite material-shoulder pad, bra sponge, cosmetic cotton, toy; the polyurethane rigid foam is the most ideal heat insulating material for freezing and refrigerating equipment, and is applied to refrigerators, freezers, cold storages, refrigerated trucks and the like.

The polyurethane rigid foam for heat insulation and heat preservation can be applied to heat preservation of industrial equipment, such as storage tanks, pipelines and heat insulation layers of building materials; transportation industries, such as automotive headliners, interior trim parts; the imitation wood, the polyurethane rigid foam or the glass fiber reinforced rigid foam is structural foam plastic, also called imitation wood, has the characteristics of high strength, good toughness, compact and tough skinning, simple forming process, high production efficiency and the like, has the strength higher than that of natural wood and the density lower than that of natural wood, can be used as various high-grade products instead of wood, can be used as potting materials such as waterproof grouting materials, leakage plugging materials, roof waterproof materials, PU flowerpots in the flower industry, mud for inserting flowers and the like,

the foam body has excellent electromagnetic wave absorption, shock absorption and buffering performances, good compression load resistance and deformation recovery performance, and is used for preparing relevant automobile parts; self-skinning foams are used for the production of soft interior functional parts and interior trim parts such as steering wheels, armrests and headrests of automobiles, and the self-skinning foam products are usually processed by reaction injection molding.

At present, in the production of all polyurethane self-skinning products on the market, a layer of paint is firstly sprayed in a mould, commonly called as in-mould paint, the in-mould paint is dissolved and diluted by organic solvent butanone, the taste is very strong in a production field, although each manufacturer is provided with an exhaust gas treatment system, the current situation that the field environment is severe can not be solved, the current environmental protection problem becomes the biggest problem of each manufacturer, either finding water-based in-mould paint or not spraying in-mould paint, therefore, in small and medium-sized products with low surface requirements, the manufacturers begin to put forward the requirement of not spraying in-mould paint to raw material manufacturers.

Meanwhile, the current preparation method and equipment of polyurethane composition still have the following problems:

1. the existing polyurethane composition is greatly limited in component selection due to the compatibility among components and the limitation of a preparation process, cannot simultaneously have the performances in various aspects such as heat insulation, wave absorption, energy absorption and the like, and is poor in mechanical strength.

2. The existing polyurethane composition has serious peculiar smell in a production field due to the fact that components are dissolved and diluted by an organic solvent butanone, and the existing polyurethane composition can be dried only within two minutes after being sprayed by water-based in-mold paint, so that the production efficiency is reduced.

3. The current technology of using water-based in-mold paint by the existing production equipment of polyurethane composition can not meet the requirements of production technology, and the water-based in-mold paint can be dried in at least two minutes after being sprayed, thereby greatly reducing the production efficiency.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art's the above-mentioned not enough, the utility model provides a thermal-insulated preparation equipment of inhaling from skinning polyurethane composition through carrying out synchronous optimization to material component, production technology and equipment, makes the material possess low density, flexibility, thermal-insulated, energy-absorbing and inhale the wave function to improve the mechanical strength of material.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a preparation device of a heat-insulating wave-absorbing self-skinning polyurethane composition comprises a workbench, an injection molding machine and a mixing tank, wherein the workbench is a rectangular plate body, the injection molding machine is fixed at one end of the top surface of the workbench, the mixing tank is fixed at the top end of the injection molding machine through a support, a discharge valve is communicated with the bottom end of the mixing tank and communicated with an inlet of the injection molding machine, a horizontal injection rod is arranged at one side of the injection molding machine, a longitudinal guide rail is fixedly installed at the other side of the top surface of the workbench, the horizontal injection rod is positioned at the top surface of the central line of the longitudinal guide rail, a sliding block is movably embedded on the top surface of the longitudinal guide rail, the center of the top surface of the sliding block is rotatably connected with a rotary station platform, four foaming molds with the same specification are fixedly installed at the top end of, the horizontal injection rod is intermittently matched and butted with the four feeding ports of the foaming mold, a telescopic driving mechanism is fixed at one end of the longitudinal guide rail, and the telescopic driving mechanism is connected with and drives the sliding block and the rotary station table to move along the longitudinal guide rail.

As the utility model discloses a preferred technical scheme, the bottom nested connection of compounding jar has the electric heating circle, the avris intercommunication on compounding tank deck end has major ingredient delivery flap and auxiliary material filler, the auxiliary material filler includes check valve, the inner chamber of compounding jar is equipped with the mixer.

As the utility model discloses an optimal technical scheme, be equipped with the ration filling pump in the injection molding machine, the ration filling pump is screw pump or plunger pump.

As the preferred technical scheme of the utility model, flexible actuating mechanism is servo motor-ball screw drive pair or telescopic cylinder drive pair.

As the utility model discloses a preferred technical scheme, the avris of sliding block is fixed with the telescopic pin axle, the avris of rotatory station platform is equipped with the location pinhole, the location pinhole that the gomphosis of telescopic pin axle intermittent type nature corresponds with it.

As the utility model discloses an optimized technical scheme, one side of workstation is equipped with the stand, the gomphosis that moves about on the stand has lift heat preservation to detain the cover, lift heat preservation is detained the cover lock and is corresponded with it foaming mold utensil.

A heat-insulating and wave-absorbing self-skinning polyurethane composition is prepared from the following raw materials in parts by weight:

polyether polyol: sixty parts; polymer polyol: forty parts by weight; delayed catalysis: one part; modified cross-linking agent: five parts; low foaming agent: ten parts; catalyst: five parts at zero point; wave-absorbing filler: one hundred parts, reinforcing chain extender: one point and five parts; sixty parts of dust absorption material, wherein the wave absorption filler comprises one or a mixture of aluminum oxide, magnesium oxide, boron nitride, aluminum nitride and beryllium oxide, and the dust absorption material comprises one or a mixture of activated carbon particles, absorbent cotton and a bamboo charcoal fiber net.

The preparation method of the self-skinning polyurethane composition for heat insulation and wave absorption comprises the following steps:

s1: preparing raw materials: respectively preparing polyether polyol, polymer polyol, a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst, a wave-absorbing filler, an enhanced chain extender and a dust-absorbing material according to a set weight;

s2: stirring and foaming raw materials: inputting polyether polyol, polymer polyol, wave-absorbing filler and dust-absorbing material in raw materials into a sealed stirring container, starting a stirring machine, and gradually injecting and adding a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst and a reinforced chain extender in the stirring process;

s3: foaming and injection molding: foaming the fully mixed substances in a sealed stirring container, introducing the foams into an injection molding machine through a valve after the foams reach a set desired standard, quantitatively injecting a set amount of foams into a mold through the injection molding machine, and replacing one mold for continuous injection molding and filling after the foams in one mold are filled;

s4: maintaining plasticity and stabilizing structure; keeping the mold after injection at the set temperature and pressure for the set time to enable the foam filled in the mold to be cured and molded, self-skinning on the surface of the foam and meeting the set mechanical requirement;

s5: opening the die to take materials, finishing and cutting: opening the mold which is maintained in a plastic state, taking out the injection-molded workpiece with a stable structure, cleaning the surface of the injection-molded workpiece, removing redundant burrs and injection-molded pipes, cleaning the inner cavity of the mold, and preparing for next injection molding; preparing a self-skinning polyurethane composition for heat insulation and wave absorption;

s6: and (3) finished product detection: the method comprises the steps of finding out the corresponding part of a mold cavity according to the position of a flaw by visual inspection of the surface of an injection molding product to adjust the flaw, testing the heat conductivity coefficient, the wave absorption performance, the temperature resistance range, the volume resistivity, the voltage resistance, the flame retardance, the tensile strength, the hardness, the thickness and the like of a polyurethane injection molding finished product in a comprehensive testing machine using a heat conductivity coefficient detection module, a wave absorption performance detection module, a resistivity detection module, a voltage resistance detection module, a tensile strength detection module and a hardness detection module, and sorting and compiling the detection results into a table.

(III) advantageous effects

Compared with the prior art, the utility model provides a thermal-insulated ripples of inhaling from skinning polyurethane composition, preparation method and equipment possesses following beneficial effect:

1. the utility model provides a thermal-insulated ripples of inhaling is from skinning polyurethane composition preparation method and equipment, it is key through improving material, technology and equipment in step, increased the function of material, improved the performance of material, need not to paint in mould inner chamber spraying mould, improved work area's environment, improved work efficiency.

2. The utility model provides a thermal-insulated ripples of inhaling from skinning polyurethane composition through unique formula design, makes the material possess low density, flexibility, thermal-insulated, dust absorption and inhale the function of ripples, adopts multiple chain extender combination collocation to reduce, solves the micropore problem that has surface texture, pattern product.

3. The utility model provides a thermal-insulated preparation method who inhales ripples from skinning polyurethane composition, through adopting the delay catalyst to solve product foaming line colour difference problem, make production processes and detection process combine closely for product production efficiency and quality have simplified equipment and process steps, make the easy industrialization of product, and reduced equipment and manufacturing cost.

4. The utility model provides a thermal-insulated preparation equipment of inhaling from skinning polyurethane composition of ripples that insulates against heat sets up four foaming mould of rotatory station platform installation, rotatory station platform under telescopic drive mechanism's drive with the horizontal injection pole on the injection molding machine separation and reunion of each other to set up the lift and keep warm and detain the mould of cover after to foaming and keep warm and handle, make the foam solidification shaping of filling in the mould, at its surface skinning certainly, reach the mechanical requirement of settlement.

Drawings

FIG. 1 is a schematic view of the overall appearance of the polyurethane injection molding production equipment of the present invention;

FIG. 2 is a schematic view of another perspective view of the overall shape of the polyurethane injection molding production equipment of the present invention;

fig. 3 is the whole sectional structure schematic diagram of the polyurethane injection molding production equipment of the utility model.

In the figure: 1. a work table; 2. an injection molding machine; 201. a quantitative filling pump; 3. a mixing tank; 301. an electric heating ring; 302. a main material conveying valve; 303. an auxiliary material filler; 304. a blender; 4. a discharge valve; 5. a horizontal injection rod; 6. a longitudinal guide rail; 7. a slider; 701. a telescopic pin shaft; 8. rotating the station table; 801. a positioning pin hole; 9. a foaming mold; 10. a telescopic driving mechanism; 11. a column; 12. the heat preservation of lift is detained the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the self-skinning polyurethane composition for heat insulation and wave absorption provided by the embodiment of the present invention is prepared from the following raw materials in parts by weight:

polyether polyol: sixty parts; polymer polyol: forty parts by weight; delayed catalysis: one part; modified cross-linking agent: five parts; low foaming agent: ten parts; catalyst: five parts at zero point; wave-absorbing filler: one hundred parts, reinforcing chain extender: one point and five parts; sixty parts of dust absorption material, wherein the wave absorption filler comprises one or a mixture of aluminum oxide, magnesium oxide, boron nitride, aluminum nitride and beryllium oxide, and the dust absorption material comprises one or a mixture of activated carbon particles, absorbent cotton and a bamboo charcoal fiber net.

In the embodiment, the toxicity of the polyether polyol is very low, the polyether polyol is commonly used as a pharmaceutical excipient and an emulsifier, and is frequently used in oral cavities, nasal sprays, eyes, ear drops and shampoos, polyether polyol series products are mainly used for polyurethane foam plastics in the polyurethane industry, and main varieties of the polyether polyol series products comprise polyoxypropylene polyol, polytetrahydrofuran ether polyol and the like which are used for preparing rigid polyurethane foam plastics, and the polyether polyol series products are widely applied to the fields of refrigerators, freezers, refrigerated trucks, heat insulation boards, pipeline heat insulation and the like.

The polymer polyol is prepared by taking general polyether polyol as basic polyether, adding vinyl monomers such as acrylonitrile, styrene, methyl methacrylate, vinyl acetate, vinyl chloride and the like and an initiator, and performing free radical graft polymerization at about 100 ℃ under the protection of nitrogen.

The delayed catalyst is DY225 or DY8154, DY225 is modified dimethylamino ethyl ether dihydric alcohol solution, and the foaming catalyst with the delayed action can delay milk-white time, improve fluidity and shorten demoulding time; DY8154 is a modified triethylene diamine dihydric alcohol solution, has a gel catalyst with a delaying effect, can improve the fluidity, shorten the demolding time, delay the gel catalyst, improve the fluidity, has good opening property, and is used for molding high resilience, self-skinning and the like.

The modified cross-linking agent is a mixture prepared by mixing trimethylolpropane, castor oil or pentaerythritol in a ratio of 1:1:1, is an important component of the poly-hydrocarbon photoresist, has photochemical curing effect, depends on the cross-linking agent with a double-photosensitive functional group to participate in reaction, generates a double free radical after exposure, and reacts with the poly-hydrocarbon resin to form a bridge bond between polymer molecular chains to become an insoluble substance with a three-dimensional structure, so that the physical performance of a main structure is improved.

The low foaming agent adopts carbonate or alkane and fluorocarbon, the carbonate is an inorganic foaming agent, and more of the carbonate is mainly calcium carbonate, magnesium carbonate and sodium bicarbonate, wherein the sodium bicarbonate is white powder, the decomposition temperature is about 100-1 forty ℃, partial CO2 is released, all CO2 is lost when the temperature is 270 ℃, and the low foaming agent is soluble in water and insoluble in alcohol; the alkane and fluorocarbon foaming agent is a compound physical foaming agent and has the advantages of high foaming times, good foam stability, low bleeding amount and the like.

The catalyst is aliphatic amine catalyst and organic metal catalyst, wherein the aliphatic amine catalyst is one of DY-1 bis-dimethylamino ethyl ether, DY-5 pentamethyl diethylenetriamine, DY-8 dimethyl cyclohexylamine, DY-12 dibutyltin dilaurate, DY-20 organic bismuth or DY-41 triazine trimerization catalyst; aliphatic amine catalysts are effective in enhancing the reaction of isocyanate groups and hydroxyl groups in the production of polyurethane foams, and also have a certain acceleration effect on the reaction of water and isocyanate in a formulation with moisture.

The utility model discloses an enhancement chain extender, be can with the functional group reaction on the linear polymer chain and make the material of molecular chain extension, molecular weight increase for improve the mechanical properties and the technological property of products such as polyurethane, polyester, its theory of operation is: in production, some compounds containing active hydrogen are commonly used to react with isocyanate end group prepolymer, so that molecular chain diffusion is prolonged, thereby realizing curing and forming of resin, being very important for synthesis of polyurethane adhesives and sealants, and directly influencing mechanical properties and technological properties of products; the middle reinforcing chain extender of the utility model is 2-imidazolidinone or 1, 4-Butanediol (BDO) or 1, 6-hexanediol or glycerin or trimethylolpropane or diethylene glycol (DEG) or triethylene glycol or neopentyl glycol (NPG) or sorbitol or diethylaminoethanol and the like; the amine chain extender comprises MOCA and liquid MOCA prepared by modifying with formaldehyde, or ethylenediamine (DA), or N, N-dihydroxy (diisopropyl) aniline (HPA), or hydroquinone-bis (beta-hydroxyethyl) ether (HQEE).

The preparation method of the self-skinning polyurethane composition for heat insulation and wave absorption comprises the following steps:

s1: preparing raw materials: respectively preparing polyether polyol, polymer polyol, a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst, a wave-absorbing filler, an enhanced chain extender and a dust-absorbing material according to a set weight;

s2: stirring and foaming raw materials: inputting polyether polyol, polymer polyol, wave-absorbing filler and dust-absorbing material in raw materials into a sealed stirring container, starting a stirring machine, and gradually injecting and adding a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst and a reinforced chain extender in the stirring process.

S3: foaming and injection molding: foaming the fully mixed substances in a sealed stirring container, introducing the foams into an injection molding machine through a valve after the foams reach a set desired standard, quantitatively injecting a set amount of foams into a mold through the injection molding machine, and replacing one mold for continuous injection molding and filling after the foams in one mold are filled;

s4: maintaining plasticity and stabilizing structure; keeping the mold after injection at the set temperature and pressure for the set time to enable the foam filled in the mold to be cured and molded, self-skinning on the surface of the foam and meeting the set mechanical requirement;

s5: opening the die to take materials, finishing and cutting: opening the mold which is maintained in a plastic state, taking out the injection-molded workpiece with a stable structure, cleaning the surface of the injection-molded workpiece, removing redundant burrs and injection-molded pipes, cleaning the inner cavity of the mold, and preparing for next injection molding; preparing a self-skinning polyurethane composition for heat insulation and wave absorption;

s6: and (3) finished product detection: the method comprises the steps of finding out the corresponding part of a mold cavity according to the position of a flaw by visual inspection of the surface of an injection molding product to adjust the flaw, testing the heat conductivity coefficient, the wave absorption performance, the temperature resistance range, the volume resistivity, the voltage resistance, the flame retardance, the tensile strength, the hardness, the thickness and the like of a polyurethane injection molding finished product in a comprehensive testing machine using a heat conductivity coefficient detection module, a wave absorption performance detection module, a resistivity detection module, a voltage resistance detection module, a tensile strength detection module and a hardness detection module, and sorting and compiling the detection results into a table.

The preparation equipment of the heat-insulating and wave-absorbing self-skinning polyurethane composition comprises a workbench 1, an injection molding machine 2 and a mixing tank 3, wherein the workbench 1 is a rectangular plate body, the injection molding machine 2 is fixed at one end of the top surface of the workbench 1, the mixing tank 3 is fixed at the top end of the injection molding machine 2 through a support, a discharge valve 4 is communicated with the bottom end of the mixing tank 3, the discharge valve 4 is communicated with an inlet of the injection molding machine 2, a horizontal injection rod 5 is arranged at one side of the injection molding machine 2, a longitudinal guide rail 6 is fixedly installed at the other side of the top surface of the workbench 1, the horizontal injection rod 5 is positioned at the top surface of the central line of the longitudinal guide rail 6, a sliding block 7 is movably embedded at the top surface of the longitudinal guide rail 6, the center of the top surface of the sliding block 7 is rotatably connected with a rotary station platform 8, four foaming molds 9 with the same specification are fixedly installed at, and a telescopic driving mechanism 10 is fixed at one end of the longitudinal guide rail 6, and the telescopic driving mechanism 10 is connected with and drives the sliding block 7 and the rotary station table 8 to displace along the longitudinal guide rail 6.

In the embodiment, polyether polyol, polymer polyol, a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst, a wave-absorbing filler, a reinforced chain extender and a dust-absorbing material in a set proportion are poured into a material mixing tank 3 according to a process flow, the materials are foamed in the material mixing tank, after the foaming is abundant, foam enters an injection molding machine 2 through a material discharge valve 4, meanwhile, a telescopic driving mechanism 10 pushes a rotary station platform 8 to be close to the injection molding machine 2, so that an opening of a first injection mold monomer in four foaming molds 9 is in butt joint conduction with a horizontal injection rod 5, the injection molding machine 2 injects a certain amount of foam into the opening of the corresponding injection mold monomer through the horizontal injection rod 5, after the foaming material is fully poured into the current injection mold monomer, the telescopic driving mechanism 10 pulls the rotary station platform 8 to be far away from the injection molding machine 2, make horizontal injection pole 5 and current injection mold mould monomer break away from, then rotatory station platform 8 rotates a station, aim at horizontal injection pole 5 with the free opening of second injection mold mould, then flexible actuating mechanism 10 promotes rotatory station platform 8 again and is close to injection molding machine 2, make the free opening of second injection mold mould and horizontal injection pole 5 butt joint switch on and mould plastics, foam material in the first injection mold mould monomer solidifies this moment, the shaping, when horizontal injection pole 5 pours the foam into to the third injection mold mould monomer, the first injection mold mould monomer can carry out the die sinking, get the material operation, when horizontal injection pole 5 pours the foam into to the fourth injection mold mould monomer, the clearance of mould inner chamber can be carried out to the first injection mold mould monomer, prepare for the foaming of next round is moulded plastics.

Specifically, the bottom end of the mixing tank 3 is connected with an electric heating ring 301 in an embedded mode, the side of the top end of the mixing tank 3 is communicated with a main material conveying valve 302 and an auxiliary material filler 303, the auxiliary material filler 303 comprises a one-way valve, and the inner cavity of the mixing tank 3 is provided with a stirring machine 304.

In this embodiment, when the main material delivery valve 302 is opened, polyether polyol, polymer polyol, a wave-absorbing filler, a dust-absorbing material and other main raw materials are input into the mixing tank 3, when the auxiliary material filler 303 is opened, indispensable auxiliary raw materials such as a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst, a reinforced chain extender and the like are input into the mixing tank 3, when the mixing tank 3 is filled with the above mixed material, the stirring machine 304 starts to stir, so that the above materials are uniformly mixed, and the electric heating ring 301 heats the inner cavity of the mixing tank 3 and the mixture contained therein, so that the mixture is at an optimal foaming temperature, and the foaming is more uniform.

Specifically, a quantitative filling pump 201 is arranged in the injection molding machine 2, and the quantitative filling pump 201 is a screw pump or a plunger pump.

In this embodiment, the screw pump or the plunger pump can quantitatively and constantly deliver the foam to the foaming mold 9 through the horizontal injection rod 5 according to the set foaming process, so that the foaming mold 9 can be filled with the foam, and waste caused by outputting of redundant foam can be avoided.

Specifically, the telescopic driving mechanism 10 is a servo motor-ball screw driving pair or a telescopic cylinder driving pair.

In this embodiment, the servo motor-ball screw driving pair or the telescopic cylinder driving pair can be installed at a set speed and a set stroke to drive the rotating station platform 8 to be close to or far away from the injection molding machine 2, so that the openings of the injection mold units in the four foaming molds 9 are in butt joint conduction with the horizontal injection rod 5 and withdrawn after foaming is completed, and foam is injected into the next injection mold unit.

Specifically, the telescopic pin shaft 701 is fixed to the side of the slide block 7, the positioning pin hole 801 is provided in the side of the rotary table 8, and the corresponding positioning pin hole 801 is intermittently fitted to the telescopic pin shaft 701.

In this embodiment, after the rotary station platform 8 rotates one station, the retractable pin 701 is inserted into the corresponding positioning pin hole 801 in an extending manner, so as to accurately position the rotation angle of the rotary station platform 8, so that the horizontal injection rod 5 is butted with the opening of the injection mold monomer currently located at the injection station.

Specifically, one side of the workbench 1 is provided with a column 11, a lifting heat-preservation buckle cover 12 is movably embedded on the column 11, and the lifting heat-preservation buckle cover 12 is buckled with the corresponding foaming mold 9.

In this embodiment, the lifting heat-insulating buckle cover 12 is used for heat-insulating the injection mold monomer subjected to injection molding, so that the injection mold monomer is cured and molded at the optimal temperature, and self-skinned on the surface of the injection mold monomer, and the interior of the injection mold monomer meets the set mechanical requirements.

The utility model discloses a theory of operation and work flow are: pouring polyether polyol, polymer polyol, a delayed catalyst, a modified cross-linking agent, a low foaming agent, a catalyst, a wave-absorbing filler, a reinforced chain extender and a dust-absorbing material into a mixing tank 3 according to a process flow, foaming the materials in the mixing tank, after the foaming is rich, allowing foam to enter an injection molding machine 2 through a discharge valve 4, simultaneously pushing a rotary station platform 8 to be close to the injection molding machine 2 by a telescopic driving mechanism 10 so that an opening of a first injection mold monomer in four foaming molds 9 is in butt joint conduction with a horizontal injection rod 5, injecting quantitative foam into an opening of the corresponding injection mold monomer by the injection molding machine 2 through the horizontal injection rod 5, after the foaming material is fully filled in the current injection mold monomer, pulling the rotary station platform 8 to be far away from the injection molding machine 2 by the telescopic driving mechanism 10 so that the horizontal injection rod 5 is separated from the current injection mold monomer, then the rotary station table 8 rotates one station, the opening of the second injection mould monomer is aligned with the horizontal injection rod 5, then the telescopic driving mechanism 10 pushes the rotary station platform 8 to approach the injection molding machine 2 again, so that the opening of the second injection mold monomer is in butt joint conduction with the horizontal injection rod 5 for injection molding, at the moment, the foam material in the first injection mold monomer is solidified and molded in a temperature interval provided by the lifting heat-preservation buckle cover 12, self-skinning on the surface of the third injection mould, enabling the inner part of the third injection mould to meet the set mechanical requirement, waiting until the horizontal injection rod 5 pours foam into the third injection mould, the first injection mould single body can carry out the operations of mould opening and material taking, when the horizontal injection rod 5 fills foam into the fourth injection mould single body, the first injection mould monomer can clean the inner cavity of the mould and prepare for the next round of foaming injection moulding.

Example 2:

the self-skinning polyurethane composition, the preparation method and the equipment for heat insulation and wave absorption provided by the embodiment are basically the same as those of the embodiment 1, and the difference is that:

in the embodiment, the self-skinning polyurethane composition for heat insulation and wave absorption is prepared from the following components in parts by weight:

polyether polyol: fifty-five parts; polymer polyol: forty-five parts; delayed catalysis: one part; modified cross-linking agent: five parts; low foaming agent: ten parts; catalyst: five parts at zero point; wave-absorbing filler: one hundred parts, reinforcing chain extender: one point and five parts; sixty parts of dust collection materials.

Example 3:

the preparation method and the equipment of the self-skinning polyurethane composition for heat insulation and wave absorption provided by the embodiment are basically the same as those of the embodiments 1 and 2, and the difference is that:

in the embodiment, the self-skinning polyurethane composition for heat insulation and wave absorption is prepared from the following components in parts by weight:

polyether polyol: sixty-five parts; polymer polyol: thirty-five parts; delayed catalysis: one part; modified cross-linking agent: five parts; low foaming agent: ten parts; catalyst: five parts at zero point; wave-absorbing filler: one hundred parts, reinforcing chain extender: one point and five parts; sixty parts of dust collection materials.

In other embodiments, the specific components and ratios, process conditions, components and ratios can be selected according to requirements within the above recorded ranges, and the technical effects of the present invention can be achieved; the utility model discloses no longer list one by one.

The utility model provides a thermal-insulated ripples of inhaling is from skinning polyurethane composition preparation method and equipment, it is key through improving material, technology and equipment in step, increased the function of material, improved the performance of material, need not to paint in mould inner chamber spraying mould, improved work area's environment, improved work efficiency.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A preparation equipment of self-skinning polyurethane composition for heat insulation and wave absorption is characterized in that: comprises a workbench (1), an injection molding machine (2) and a mixing tank (3), wherein the workbench (1) is a rectangular plate body, one end of the top surface of the workbench (1) is fixed with the injection molding machine (2), the top end of the injection molding machine (2) is fixed with the mixing tank (3) through a support, the bottom end of the mixing tank (3) is communicated with a discharging valve (4), the discharging valve (4) is communicated with an inlet of the injection molding machine (2), one side of the injection molding machine (2) is provided with a horizontal injection rod (5), the other side of the top surface of the workbench (1) is fixedly provided with a longitudinal guide rail (6), the horizontal injection rod (5) is positioned on the top surface of the central line of the longitudinal guide rail (6), the top surface of the longitudinal guide rail (6) is movably embedded with a sliding block (7), the center of the top surface of the sliding block (7), the top fixed mounting of rotatory station platform (8) has four foaming mould (9) that the specification is the same, four one side of foaming mould (9) all is equipped with the pan feeding mouth, level injection pole (5) and four the pan feeding mouth intermittent type nature cooperation butt joint of foaming mould (9), the one end of longitudinal rail (6) is fixed with flexible actuating mechanism (10), flexible actuating mechanism (10) are connected and are driven sliding block (7) with rotatory station platform (8) along longitudinal rail (6) carry out the displacement.

2. The apparatus for preparing the self-skinned polyurethane composition that is both thermally insulating and absorbing according to claim 1, wherein: the bottom nested connection of compounding jar (3) has electric heating circle (301), the avris intercommunication on compounding jar (3) top has major ingredient delivery flap (302) and auxiliary material filler (303), auxiliary material filler (303) include check valve, the inner chamber of compounding jar (3) is equipped with mixer (304).

3. The apparatus for preparing the self-skinned polyurethane composition that is both thermally insulating and absorbing according to claim 1, wherein: the injection molding machine (2) is internally provided with a quantitative filling pump (201), and the quantitative filling pump (201) is a screw pump or a plunger pump.

4. The apparatus for preparing the self-skinned polyurethane composition that is both thermally insulating and absorbing according to claim 1, wherein: the telescopic driving mechanism (10) is a servo motor-ball screw driving pair or a telescopic cylinder driving pair.

5. The apparatus for preparing the self-skinned polyurethane composition that is both thermally insulating and absorbing according to claim 1, wherein: the avris of sliding block (7) is fixed with flexible round pin axle (701), the avris of rotatory station platform (8) is equipped with registration pin hole (801), flexible round pin axle (701) intermittent type nature gomphosis with its corresponding registration pin hole (801).

6. The apparatus for preparing the self-skinned polyurethane composition that is both thermally insulating and absorbing according to claim 1, wherein: one side of workstation (1) is equipped with stand (11), the movable gomphosis has lift heat preservation to detain cover (12) on stand (11), lift heat preservation is detained cover (12) lock and is corresponded with it foaming mould (9).

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