CN209633809U - A kind of monoblock type injection molding for machined polyurethane resin compounded profile - Google Patents

Abstract

The utility model discloses a kind of monoblock type injection moldings for machined polyurethane resin compounded profile, monoblock type injection molding is divided into molding die region, syringe case die region and preforming tool region in form, perforation before and after its monoblock type injection molding, the left and right sides are completely enclosed；Wherein molding die region and preforming tool region have fully constructed type chamber identical with shape of product by upper module, lower module, side form block and muti-piece intermediate module, syringe case die region is by upper module, lower module, side module composition glue injection cavities, multiple cooling water circulation ports and multiple injection ports, the glue injection cavities perforation of injection port and syringe case die region are equipped in monoblock type injection molding.The utility model realizes the continuous production processes of high-performance products, improves productivity, reduces production cost.

Description

A kind of monoblock type injection molding for machined polyurethane resin compounded profile

Technical field

The utility model relates to a kind of monoblock type injection moldings for machined polyurethane resin compounded profile.

Background technique

The resin that traditional pultrusion molding process uses mainly has unsaturated polyester resin, epoxy resin, vinyl esters tree Used resin is carried out mixing according to certain formula rate addition other materials and is placed on resin by rouge etc. in production In dipping tank.Then, fibre reinforced materials, by resin impregnation tank, its fiber is increased under the traction of extruder traction device Strong material impregnating resin, pitch based fiber reinforcing material squeeze out extra resin by preforming mould, exclude in resin Bubble is heating and curing into shaping mould type chamber and forms final product.In this entire production process, in resin impregnation tank Resin and the resin of fibre reinforced materials dipping be completely exposed and cause environmental pollution in an atmosphere, also to the body of operator It damages, simultaneously as the resin in dipping tank is placed in dipping tank for a long time, pitch based fiber reinforcing material passes through Preforming mould squeezes out extra resin and flows back into resin impregnation tank, resin viscosity can be made to increase in this way, cause resin cannot be very Fibre reinforced materials, product properties decline are impregnated well, or even influences the continuity of production, and production cost is caused to be mentioned It is high.

Summary of the invention

The purpose of this utility model is to overcome above deficiencies, provide a kind of totally-enclosed machined polyurethane resin compounded Polyurethane resin is injected into the injection of monoblock type injection molding using pultrusion injection technique by the monoblock type injection molding of profile In box mold, the pressure and flow for being stabilized polyurethane resin in the syringe case mold of monoblock type injection molding make fibre Dimension reinforcing material is sufficiently impregnated in the glue injection cavities of the syringe case die region of monoblock type injection molding, in extruder traction device Traction under, the heating of the molding die that enters the fibre reinforced materials for being sufficiently impregnated polyurethane resin in monoblock type injection molding Curing molding improves productivity to realize the continuous production processes of high-performance products, reduces production cost.

The purpose of this utility model is achieved through the following technical solutions: one kind being used for machined polyurethane resin compounded profile Monoblock type injection molding, monoblock type injection molding be divided into form molding die region, syringe case die region and in advance at Type die region, monoblock type injection molding are made of upper module, lower module, side form block and muti-piece intermediate module, module and module Between be bolted fixation, perforation before and after monoblock type injection molding, the left and right sides is completely enclosed；Molding die region tool Have and type chamber identical with shape of product, syringe case have been fully constructed by upper module, lower module, side form block and muti-piece intermediate module Die region has by upper module, lower module, side module composition glue injection cavities, and preforming tool region has by upper module, lower die Block, side form block and muti-piece intermediate module have fully constructed type chamber identical with shape of product；Positioned at the note of monoblock type injection molding The boundary for penetrating box die region and molding die region is equipped with multiple cooling water circulation ports on upper module and lower module, cold But the length of water circulation port local space is 200-500mm, in the upper module of the syringe case die region of monoblock type injection molding Multiple injection ports, the glue injection cavities perforation of injection port and syringe case mold are equipped with lower module.

Further improvement of the utility model is: monoblock type injection molding length is 1200 mm-1900 mm, wherein at It is 900 mm -1100 mm that pattern, which has zone length, and syringe case die region length is 250 mm -680 mm, preforming tool Zone length is 50mm-120 mm.

Further improvement of the utility model is: the shape of its glue injection cavities is oval glue injection cavities, and glue injection cavities are by muti-piece Inclined surface composition, inclined surface angle are α and β, wherein -2.5 ° of α=1 °, -3.5 ° of β=2 °, α sections of inclined surface length and β sections of inclinations Face length ratio is 1:0.5-0.8, and α sections of inclined surface and β sections of inclined surface intersection are equipped with arc transition, arc radius R=150 mm -500 mm。

Further improvement of the utility model is: injection port and upper module and lower module plane included angle are γ, γ= 45°-90°。

Compared with the prior art, the utility model has the following advantages:

1, entire production process is closed feed system, and high production efficiency, waste of raw materials is few, and energy conservation and environmental protection is not made At the actual bodily harm of operator.

2, designability is high: polyurethane resin composite material globality and cross sectional shape consistency are good, are held according to required The load received can manufacture and design the polyurethane resin composite material of different-thickness, section, shape, size and varying strength, profile Length is unrestricted.

3, polyurethane resin composite material is from heavy and light, and intensity is high, and weight is only the 1/3-1/4 of steel.

4, polyurethane resin composite material good corrosion resistance, thermal conductivity is low, and the coefficient of expansion is small.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of monoblock type injection molding；

Fig. 2 is the structural schematic diagram of A-A in Fig. 1；

Fig. 3 is the structural schematic diagram of B-B in Fig. 1；

Fig. 4 is the flow process chart of polyurethane resin composite material；

Fig. 5 is the usage state diagram of polyurethane resin composite material；

Figure label: 1- fibre reinforced materials；2- guide plate；3- temperature control removes wet tank；4- preformed board；5- injector； 6- monoblock type injection molding；6-1- preforming tool region；6-2- syringe case die region；6-2-1- glue injection cavities；6-3- molding Die region；6-4- upper module；6-5- lower module；6-6- side form block；6-7- cooling water circulation port；6-8- injection port；The poly- ammonia of 7- Ester resin compounded profile；8- steel wire or indented wire；9- thin steel sheet；10- steel stiff skeleton.

Specific embodiment:

It, below will be to the utility model to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Technical solution in embodiment is clearly and completely described, it is clear that described embodiment is that the utility model a part is real Example is applied, instead of all the embodiments.The elements and features described in a kind of embodiment of the utility model can be with one Elements and features shown in a or more other embodiment combine.It should be noted that for purposes of clarity, in explanation The expression and description of component unrelated with the utility model, known to persons of ordinary skill in the art and processing is omitted.It is based on The embodiments of the present invention, those of ordinary skill in the art institute obtained under the premise of not making the creative labor There are other embodiments, fall within the protection scope of the utility model.

As shown in Figure 1 to Figure 3, a kind of monoblock type injection molding for machined polyurethane resin compounded profile is in form It is divided into three molding die, syringe case mold and preforming tool regions, monoblock type injection molding is by upper module, lower module, side Fixation is bolted after installing according to the technical requirements of regulation in module and muti-piece intermediate module composition, module and module, Perforation before and after monoblock type injection molding, the left and right sides are completely enclosed.Monoblock type injection molding length is 1200 mm-1900 mm, Wherein molding die zone length is 900 mm -1100 mm, complete by upper module, lower module, side form block and muti-piece intermediate module Type chamber identical with shape of product is constituted entirely, and syringe case die region length is 250 mm -680 mm, by upper module, lower die Block, side module composition glue injection cavities, similar glue injection cavities shape is oval glue injection cavities, and glue injection cavities are made of muti-piece inclined surface, Inclined surface angle is α and β, and wherein -2.5 ° of α=1 °, -3.5 ° of β=2 °, α sections of inclined surface length are with β sections of inclined surface length ratios 1:0.5-0.8, α sections of inclined surface and β section inclined surface intersection are equipped with arc transition, mm -500 mm of arc radius R=150, Its purpose is to solve the problems, such as that polyurethane resin is accumulated in the glue injection cavities of syringe case die region, cause polyurethane resin Gelling；Preforming tool zone length is 50mm-120 mm, complete by upper module, lower module, side form block and muti-piece intermediate module Type chamber identical with shape of product is constituted entirely.Syringe case die region and molding die region positioned at monoblock type injection molding Boundary is equipped with multiple cooling water circulation ports on upper module and lower module, it is therefore an objective to pass through the syringe case of monoblock type injection molding Cooling circulating water at die region and molding die area limit reduces polyurethane resin temperature, in this way in monoblock type injection mold The syringe case die region cooling circulating water position and molding die region cooling circulating water position of tool form one to polyurethane Resin sufficiently reduces the local space of temperature, and can prevent from heating because of molding die region makes heat transfer that polyurethane resin be caused to exist The glue injection cavities medium viscosity of syringe case die region increases, and fibre reinforced materials cannot be impregnated well by influencing polyurethane resin, Product properties decline.The length of this local space is 200-500mm, and cooling temperature of circulating water is 12 DEG C-28 DEG C.In entirety The syringe case die region upper module and lower module of formula injection molding are equipped with multiple injection ports, injection port and upper module and lower die Block plane included angle is γ, -90 ° of γ=45 °, the glue injection cavities perforation of injection port and syringe case mold.

From the point of view of monoblock type injection mould structure, monoblock type injection molding is a unitary mould unit, only will be whole Formula injection molding is divided into three molding die, syringe case mold and preforming tool regions in form, solves original note Penetrate box mold and molding die be two independent die units there are the problem of.Production when, need by syringe case mold with Molding die is connected to one by locking device, in order to prevent the heating zone heat transfer of molding die to syringe case In mold, increase resin viscosity, fibre reinforced materials cannot be impregnated well by influencing resin, and product properties decline is asked Topic, while the water clock to prevent resin, it is necessary to heat-insulating leakage-proofing pad will be increased between syringe case mold and molding die during installation Piece, if the heat-insulating leakage-proofing gasket material that syringe case mold is wrong or selected with position when molding die installation or locking force Material is uncomfortable, when especially producing large product, injector is needed to generate biggish pressure, heat-insulating leakage-proofing gasket can be made to generate change in this way Shape, causes the water clock of resin, to make the pressure and flow that polyurethane resin cannot be stable in syringe case mold, influences it Product properties decline, or even because syringe case mold and position when molding die installation are wrong, fibre reinforced materials is caused to pass through It is caused blockages when syringe case mold is with molding die boundary, causes to shut down.In the syringe case mould of monoblock type injection molding Tool region and molding die area limit are in upper module and lower module is equipped with multiple cooling water circulation ports, logical using cooling water Supercooled water circulation port reduces polyurethane resin temperature, in this way follows in the syringe case die region cooling of monoblock type injection molding It is empty that the position Huan Shui and molding die region cooling circulating water position form the part that one sufficiently reduces temperature to polyurethane resin Between, cooling effect is better than heat-insulating leakage-proofing gasket, the heat for effectively heating molding die region and syringe case die region Isolation is solved because the glue injection cavities for making heat transfer cause polyurethane resin in syringe case die region are heated in molding die region Medium viscosity increases, and fibre reinforced materials, product properties decline cannot be impregnated well by influencing polyurethane resin.

As shown in figure 4, a kind of processing method of polyurethane resin composite material, the specific steps are as follows:

1, the molding die region setting after monoblock type injection molding being installed to extruder, in monoblock type injection molding Molding die region is heated in two different heating zones, and area's temperature is 125-155 DEG C, and two area's temperature are 165-195 DEG C.Together When open cooling cycle water valve, the regional area of the syringe case mold of monoblock type injection molding and molding die boundary is carried out Reduce temperature.

Polyalcohol and isocyanates difference device are opened in the charging basket of two sealings, the heat preservation of injector equipped with polynary The attemperator of pure and mild isocyanates charging basket makes it control temperature at 12-28 DEG C, while opening stirring equipped with polyalcohol charging basket It mixes machine to be stirred polyalcohol, blender revolving speed is controlled at 30-80 revs/min.The polyurethane resin according to required for product contains Amount and fibre reinforced materials can be sufficiently impregnated the pressure requirements of polyurethane resin, adjust polyalcohol and isocyanates output flow and Pressure, measures polyalcohol and isocyanates export ratio, and polyalcohol and isocyanate weight ratio are 1:1.2-1.3, pressure value For 0.5-5MPa.The static mixer of injector is connected on the injection port in monoblock type injection molding.Injector is opened, It is sufficiently mixed polyalcohol and isocyanates in static mixer, after polyalcohol mixes in static mixer with isocyanates Polyurethane resin is formed, the syringe case mold glue injection cavities in monoblock type injection molding are injected, makes its polyurethane resin full of whole The glue injection cavities of syringe case mold in formula injection molding, since syringe case mold is closed structure, entire production process is closed Feed system.It can be reduced in this way to environmental pollution caused by atmosphere, while not injure the health of operator.

2, at the same time, under the traction device traction of extruder, fibre reinforced materials (is equipped with or not in silvalin One or two equipped with steel wire or indented wire, are provided with or without thin steel sheet in fibrofelt, as polyurethane resin is multiple Profile material structure is equipped with cavity, and steel stiff skeleton is provided with or without in cavity) by the guide plate of fibre reinforced materials, into Enter the temperature control of fibre reinforced materials except wet tank, then fibre reinforced materials is increased by fibre reinforced materials preformed board, fiber Strong material is by forming fibre reinforced materials skeleton similar with shape of product, fiber similar with shape of product after preformed board Reinforcing material skeleton enters the preforming tool region in monoblock type injection molding and forms fiber reinforcement identical with shape of product Material skeleton, fibre reinforced materials skeleton identical with shape of product is in the syringe case die region for passing through monoblock type injection molding Glue injection cavities when be injected into closed syringe case die region the polyurethane resins of glue injection cavities be sufficiently impregnated, monoblock type note It penetrates the syringe case die region of mold and molding die area limit is in upper module and lower module is equipped with multiple cooling waters and follows Annular distance, cooling water reduce polyurethane resin temperature, the cooling cycle of such syringe case die region by cooling water circulation port It is empty that the cooling circulating water position in water position and molding die region forms the part that one sufficiently reduces temperature to polyurethane resin Between, preventing from heating because of molding die region makes heat transfer that polyurethane resin be caused to glue in the glue injection cavities of syringe case die region Degree increases, and fibre reinforced materials, product properties decline cannot be impregnated well by influencing polyurethane resin.The length in this space For 200-500mm, cooling temperature of circulating water is 12 DEG C-28 DEG C.Enter back into the molding die region in monoblock type injection molding Type chamber heating zone is solidified to form required product.The traction device hauling speed of extruder is 800 mm/ of 250mm/min- min。

As shown in figure 5, polyurethane resin composite material is formed or by fibre reinforced materials and polyurethane resin are compound by fibre Reinforcing material, polyurethane resin and the compound composition of metalwork are tieed up, fibre reinforced materials is silvalin, fibrofelt or the two Mixture, if polyurethane resin composite material is by fibre reinforced materials, polyurethane resin and metalwork is compound forms, in fiber It is equipped with the one or two of steel wire or indented wire in yarn, thin steel sheet is equipped in fibrofelt, it is multiple according to its polyurethane resin Profile material strength and stiffness requirement, be provided only in polyurethane resin composite material sometimes steel wire or indented wire one kind or Two kinds, and it is not provided with thin steel sheet, it is equipped with thin steel sheet sometimes, and it is not provided with steel wire or indented wire.If polyurethane resin Composite material structure is equipped with cavity, and steel stiff skeleton can be provided with or without in cavity.In short, compound in polyurethane resin The one or two of steel wire or indented wire can be individually equipped in profile, or individually be equipped with thin steel sheet, or can individually be equipped with steel Stiff skeleton or above-mentioned several metalwork hybrid combinings.Steel stiff skeleton can it is compound simultaneously with polyurethane resin composite material and At can also be connected by the inner wall gluing of adhesive and cavity, there is packing material in steel stiff skeleton, in steel stiff skeleton Packing material is phenol formaldehyde foam, polyurethane foam, polyvinyl chloride foam, polystyrene foam, regenerated plastics, regenerated plastics and wood Consider mixture, recycling rubber, recycling rubber and chopped yarn mixture to be worth doing, when wherein packing material is foamed material, foamed material is Closed-cell foam material, in order to prevent moisture from entering the cavity in steel stiff skeleton.The end of steel stiff skeleton is equipped with end Lid, and play the role of sealing, isolation moisture.

Polyurethane resin composite material is by fibre reinforced materials, polyurethane resin and metalwork is compound forms, it is therefore an objective to be Raising polyurethane resin composite material intensity, increased polyurethane resin composite material bearing capacity and rigidity, and reduced its change Shape.

Finally, it should be noted that although the utility model and its advantage have been described in detail above it should be appreciated that Various change can be carried out without departing from the spirit and scope of the utility model being defined by the claims appended hereto Become, substitute and converts.Moreover, the scope of the utility model is not limited only to process, equipment described in specification, means, method With the specific embodiment of step.One of ordinary skilled in the art is from the disclosure of the utility model it will be readily understood that root It can be used according to the utility model and execute the function essentially identical to corresponding embodiment described herein or obtain basic with it Identical result, existing and to be developed in the future process, equipment, means, method or step.Therefore, appended right It is required that be intended to includes such process, equipment, means, method or step in the range of them.

Claims (4)

1. a kind of monoblock type injection molding for machined polyurethane resin compounded profile, it is characterised in that: the monoblock type note It penetrates mold (6) and is divided into molding die region (6-3), syringe case die region (6-2) and preforming tool region (6- in form 1), monoblock type injection molding (6) is made of upper module (6-4), lower module (6-5), side form block (6-6) and muti-piece intermediate module, Fixation is bolted between module and module, perforation before and after monoblock type injection molding (6), the left and right sides completely encloses； Molding die region (6-3) has complete by upper module (6-4), lower module (6-5), side form block (6-6) and muti-piece intermediate module Constitute type chamber identical with shape of product, syringe case die region (6-2) have by upper module (6-4), lower module (6-5), Side form block (6-6) constitutes glue injection cavities (6-2-1), and preforming tool region (6-1) has by upper module (6-4), lower module (6- 5), side form block (6-6) and muti-piece intermediate module have fully constructed type chamber identical with shape of product；Positioned at monoblock type injection molding (6) boundary of syringe case die region (6-2) and molding die region (6-3) is in upper module (6-4) and lower module (6-5) Multiple cooling water circulation ports (6-7) are equipped with, the length of cooling water circulation port (6-7) local space is 200-500mm, In The upper module (6-4) and lower module (6-5) of the syringe case die region (6-2) of monoblock type injection molding (6) are equipped with multiple injections The glue injection cavities (6-2-1) of mouth (6-8), injection port (6-8) and syringe case mold penetrate through.

2. a kind of monoblock type injection molding for machined polyurethane resin compounded profile according to claim 1, feature Be: monoblock type injection molding (6) length is 1200 mm-1900 mm, and wherein molding die region (6-3) length is 900 mm - 1100 mm, syringe case die region (6-2) length are 250 mm -680 mm, and preforming tool region (6-1) length is 50mm-120 mm。

3. a kind of monoblock type injection molding for machined polyurethane resin compounded profile according to claim 1, feature Be: the shape of its glue injection cavities (6-2-1) is oval glue injection cavities (6-2-1), and the glue injection cavities (6-2-1) are by muti-piece inclined surface Composition, inclined surface angle are α and β, wherein -2.5 ° of α=1 °, -3.5 ° of β=2 °, α sections of inclined surface length and β sections of inclined surface length The ratio between be 1:0.5-0.8, α section inclined surface and β sections of inclined surface intersection equipped with arc transition, the mm of arc radius R=150- 500 mm。

4. a kind of monoblock type injection molding for machined polyurethane resin compounded profile according to claim 1, feature Be: the injection port (6-8) is γ, -90 ° of γ=45 ° with upper module (6-4) and the lower module plane included angle (6-5).