CN107419344A

CN107419344A - One kind prevents adhesion filament spinning component

Info

Publication number: CN107419344A
Application number: CN201710797614.0A
Authority: CN
Inventors: 陈慧忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-09-06
Filing date: 2017-09-06
Publication date: 2017-12-01

Abstract

Prevented adhesion filament spinning component the present invention relates to one kind, bumps are provided with the surface being in contact with polymer melt of chamber one, chamber two, gland one, gland two, baffle one, baffle two, import one, import two, melt inlet one, melt inlet two and spinneret and are prevented adhesion mechanism；The concavo-convex anti-adhesion structure is equally distributed depression and projection.Due to being both provided with concavo-convex anti-adhesion structure on the inwall with the part of molten polymer joint of filament spinning component, it is possible to achieve anti-adhesive attraction of the polymer melt in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Concavo-convex anti-adhesion structure includes sunk part and bossing, bossing is higher by the setting of member internal walls surface, directly contacting between highly viscous polymer melt and member internal walls is reduced using supporting role between points, and gas suspension effect is formed in the presence of HTHP melt, plays and is prevented adhesion from separate type.

Description

One kind prevents adhesion filament spinning component

Technical field

The present invention relates to textile technology field, and in particular to a kind of melt spinning prevents adhesion filament spinning component.

Background technology

The BP of 1845 is come from the earliest record of melt spinning process.Nineteen thirty-nine melt spinning is as manufacture nylon The production technology of 66 fibers obtains industrial applications.Melt spinning basic process include material melts, from spinneret micropore extrusion, Melt stream cooling and solidifying shaping.Manufactured long filament can be used bobbin coiling and molding or carry out other processing.In melt spinning During, polymer feeding extruder, it is tired to be sent to metering further along after screw rod transmission, plasticizing, melting:Metering is poly- to pass through essence Really metering ensures that the melt of polymer can be flowed into stable and uniform in critical component filament spinning component, the melt in filament spinning component By the filtering of filter medium, eliminating to be provided with porous spinneret by high pressure press-in after impurity and bubble turns into thread；Carefully Stream is while cooling (quenching) quick by horizontal blowing, because the effect of following wireline reel also produces super drawing so that diameter Attenuate；As-spun fibre is wound into certain package.

Under normal circumstances filament spinning component be mainly be made up of upper strata excessively stream lid, wire netting and filter sand filter layer, distribution plate and Porous spinneret is formed.Spinning melt is after top-level entries flow into filament spinning component, the mistake for type of being lain prone via the back taper minister in ancient times in sand chamber Stream lid diffusely enters in the inner chamber of component, and filtration combination layer is ingeniously entered in the presence of upper stressor layer.Filter layer generally has multilayer Screen pack and METALLIC FILTRATION SAND composition.The a piece of coarse net for not luring steel wire to weave into often is laid in the superiors of filter layer, turns into cover net Or cover net, it is therefore an objective to which the debris for stopping bulk and the layer of sand for preventing bottom move.When being filtered using filter sand, in principle by sand grains Granularity is carefully sequentially arranged by thick.When placing multistorey strainer mesh, and by the descending principle of mesh size.In filtration combination layer The bottom laid one layer of supporting network, it be typically be made up of a piece of or two panels coarse net, it is therefore an objective to support upper level filter layer, Increase longitudinal rigidity, have the function that not to be depressed, it can also prevent from draining to the effect of spinneret orifice under broken filter sand sometimes.By Melt after fine filtering is flowed into the hole of distribution plate.On the one hand the effect of distribution plate is to play support upper level filter layer, another Aspect is before polymer melt is assigned into spinneret plate as homogeneously as possible so that the uniform flow per hole, also tubing flow displacement filament plate The melt pressure of part is shared so that spinning plate surface is unlikely to superpressure and deformed.Polymer melt is squeezed into spinneret Guide hole after, micropore gives the certain shape of melt and is extruded as strand, finishes melt like this inside filament spinning component The design of the filament spinning component of flowing need to mainly determine its structure snd size.Wherein component external structure snd size mainly need to examine The problems such as considering the intensity and corrosion resistance of itself, the problem of also relating to installing/dismounting and sealing.The inside member of filament spinning component Part just really carries main spinning function, it should how to select filtration combination element, hybrid element, distribution member and spinneret Panel element etc., it is necessary to comprehensive to go fully to be calculated and considered from multi-angles such as hydrodynamics, melt rheology and heat conductions. Certainly the problem of inner sealing of each element and strong rigidity can not be ignored while design.Melt spinning is to carry out at high temperature , if polymer melt is chronically at high humidity state, it may occur that degraded influences the quality of precursor, so inside design component During passage, melt should be made to be uniformly distributed in each micropore of spinneret as far as possible, channel resistance should be equal, can not exist in component Dead angle, in case melt residence time is long and decomposes.It should process smooth with king's part surface of melt contacts, it is impossible to make thing Material is detained due to wall surface resistance.When fluid motion uniformity mainly includes fluid motion speed, pressure, stopped in filament spinning component Between, discharging distribution etc. content.Preferable filament spinning component should be able to ensure that above-mentioned parameter is all identical simultaneously, and sample presentation just can ensure that poly- Polymer melt is evenly distributed in each spinneret orifice of spinneret with identical matter, finally spins out the uniform high quality of structural behaviour Fiber.However, the factor for influenceing flow field uniformity in filament spinning component is numerous, wherein mainly having material properties, process conditions, equipment Structural parameters etc..When the above two control identical, device structure is its most important influence factor again.

The flow behavior of polymer melt is more complex compared with for small molecule solution.Under external force, melt not only table Reveal irreversible viscous yielding, but also show reversible elastic deformation.Because the flowing of polymer is not height Simple Relative sliding between strand, but the overall result of moving cell transition successively.Under external force, macromolecular chain is not To be stretched along external force direction with can avoiding, remove external force, macromolecular chain will be spontaneously rolled up again.This conformation change institute The elastically-deformable development and Recovery Process caused is relaxation, when the process depends on polymer molecular weight, external force effect Between, temperature etc..In molding process, the outward appearance of elastic deformation and its subsequent lax pair fiber, dimensional stability, planted agent Power etc. has substantial connection.

High polymer molten viscosity is cut flowing and is mainly characterized in that:It is very high to cut viscosity；Viscosity strong depend-ence trimming speed is cut, absolutely Most of high polymer moltens belong to pseudoplastic fluid；Velocity flow profile of the pseudoplastic behavior high polymer molten in pipe is not parabolically It is linear, and plunger flow is close to, velocity gradient concentrates on near-wall, is moved that may have tube wall to slide in some cases, Molecular-weight gradation effect is there may also be in flowing, low molecular weight fraction is more than pipe axle in near-wall.

It is not constant temperature process in actual production process, and is unstable state, but above-mentioned spinnability is theoretical, to changing Learning the forming process of fiber still has preferably reference and directive significance, and the principal element drawn from spinnability theory is all control The factor that spinning processed is smoothed out.Such as be viscosity and surface tension to capillary mechanism major influence factors, cohesive energy is ruptured The principal element that mechanism influences is deformation speed and viscoplasticity size etc..Understanding the spinnability principle of melt contributes to us adjusting When saving spinning technique, optimal conditions are targetedly selected, so as to avoid occurring wild effect in spinning.Change spinning king The variable element scope that the rheological property of skill parameter and raw material may to stablize spinning fully increases, the convenient tune with technique It is whole.  need to shift and flow, therefore, high-temperature fusant and spinning group in filament spinning component due to the high temperature polymer melt of melting Part quality inspection inevitably there are contact, adhesion on the inwall of filament spinning component also just inevitably be present, although At present when preparing filament spinning component can by the smooth enough of its inwall processing, largely reduced due to Inner wall surface problem and caused by attachment of polymers, still, due to the limitation of machining accuracy and process technology, it is difficult to accomplish inwall It is completely smooth, still can so produces the adhesion of polymer；Also have in the prior art in spinning process in polymer and spinning The scheme of lubricant is added between the inwall of component, can so play certain anti-adhesiving effect, but what these were added Lubricant will certainly be entered in polymer, and then the property of polymer and the property of follow-up spinning produce unpredictable shadow Ring, and it is worthless.Due to the adhesion of the polymer in spinning process, all needed after the production schedule of a batch is not completed Filament spinning component thoroughly to be cleaned, the cleaning to filament spinning component can cause time and cost greatly to consume, but also It is difficult to be cleaned that some dead angles, which can be there are, and follow-up production can be adversely affected again.Therefore, exploitation one is needed badly Kind new anti-adhesion of filament spinning component or anti-blocking techniques, the shortcomings that to overcome in the prior art.

The content of the invention

Above-mentioned technical problem be present for prior art, the present invention, which provides one kind, can effectively reduce polymer melt in spinning The new filament spinning component that prevents adhesion of component inwall adhesion.

To achieve the above object, the present invention provides following technical scheme：

One kind is prevented adhesion filament spinning component, and filament spinning component is made up of housing, material cup, base lid, gland, baffle, filter core and spinneret, Material cup and spinneret are mounted in housing, and base lid and spinneret are respectively arranged in the upper and lower part of housing, are set in base lid There are two imports, respectively import one and import two, symmetrical configuration, the separate and of chamber one are provided with described material cup Chamber two, gland include gland one and gland two, and baffle includes baffle one and baffle two, and filter core includes filter core one and filter Core two；In described chamber one, melt inlet one corresponding with import one is provided with gland one, melt inlet one runs through gland One is set, and gland one is located at the top of baffle one, and gap one, the upper end of melt inlet one and import are formed between baffle one One connection, lower end connect with gap one, and filter core one is set in the outside of baffle one；It is provided with gland two corresponding with import two Melt inlet two, melt inlet two are set through gland two, and gland two is installed on the top of baffle two, and between baffle two Gap two is formed, the upper end of melt inlet two is connected with import two, and lower end is connected with gap two, and filter core two is set in outside baffle two Side；The spinneret orifice being connected with material cup is provided with spinneret；Chamber one, chamber two, gland one, gland two, baffle one, Baffle two, import one, import two, melt inlet one, melt inlet two and spinneret are in contact with polymer melt Bumps are provided with surface to prevent adhesion mechanism；The concavo-convex anti-adhesion structure is equally distributed depression and projection.

Preferably, the depression in the concavo-convex anti-adhesion structure and raised spaced it is uniformly distributed；Raised surface area For 0.5-2 square millimeters, the surface area of depression is 1-3 square millimeters；

Preferably, several latches are tiltedly installed with described material cup lateral wall, material cup is installed on housing by latch.

Preferably, the ladder for stationary gland, baffle and filter core is provided with described material cup madial wall.

Preferably, described gland is symmetrical structure, is made up of the convex platform and column lower cushion cap of frustoconical bevel, melt enters Mouth is disposed through at gland axially symmetric line, and lower cushion cap is bottom up raised in lower cushion cap bottom formation cavity.

Preferably, described baffle is the T-type structure being made up of the vertex of a cone, cylinder, and groove, cylinder side are provided with the vertex of a cone Wall is correspondingly arranged on plurality of guiding gutter with groove, and vertex of a cone center is overlapping with melt inlet center, and vertex of a cone external diameter is big compared with cylinder, and position In cylinder top.

Preferably, described spinneret is made up of separate and not connected spinneret district one and spinneret district two, spinneret Area one and spinneret district two form a plate two-region structure of spinneret.

Preferably, it is provided with half-round metal sealing ring between described material cup and spinneret.

Beneficial effects of the present invention：

One kind of the present invention prevents adhesion filament spinning component, and filament spinning component is by housing, material cup, base lid, gland, baffle, filter core and spray Filament plate is formed, and import is divided into import one and import two, the corresponding melt inlet one of import one, and import two corresponds to melt inlet two, Chamber one, chamber two, gland one, gland two, baffle one, baffle two, import one, import two, melt inlet one, melt enter Mouthfuls two and spinneret the surface being in contact with polymer melt on be provided with bumps and prevent adhesion mechanism；The bumps prevent adhesion Structure is equally distributed depression and projection.Compared with traditional fused spinning assembling parts, there is advantages below：Due in spinning group Concavo-convex anti-adhesion structure is both provided with the surface of the part being in contact with molten polymer of part, it is possible to achieve polymer melt Anti- adhesive attraction in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Concavo-convex anti-adhesion structure includes recessed Part and bossing are fallen into, bossing is higher by parts surface setting, and high viscosity is reduced using supporting role between points Polymer melt and parts surface between directly contact, and in the presence of HTHP melt formed gas suspension make With playing and prevented adhesion from separate type；Sunk structure plays a part of accommodating levitation gas, is cooperated with bossing；It is raised Surface area be 0.5-2 square millimeters, the surface area of depression is 1-3 square millimeters, it is preferable that raised surface area be 1 square Millimeter, the surface area of depression is 2 square millimeters, and sunk part and lug boss branch point are connected to form the cellular catch net of precision Lattice, parts surface and polymer melt are separated, increase the effect to prevent adhesion.The area of bossing and sunk part is unsuitable It is excessive, if area is excessive, good preventing adhesiving effect can not be played, itself and polymer melt directly with parts surface phase The situation of contact is without two；Area both it is also unsuitable too small, if area is too small, it can not play the estimated effect that prevents adhesion Fruit, and difficulty of processing also can be very big.Concavo-convex anti-adhesion structure can be when preparing the various pieces of filament spinning component respectively at this Apply on a little parts, can use direct docile and obedient will enter with the prevent adhesion sark of mechanism of bumps in the form of the surface of part OK, can also be carried out in the form of precision lathe processing, its specific processing method is conventional zero of the prior art Part manufacturing process, is no longer described herein.

Brief description of the drawings

Fig. 1 is the schematic diagram of the filament spinning component of the invention that prevents adhesion.

Reference：

A. chamber one；B. chamber two；C. gap one；D. gap two；1. housing；2. material cup；3. spinneret；31. point Distribution；4a. glands one；4b. glands two；44a. melt inlets one；44b. melt inlets two；5a. baffles one；5b. Baffle two；6a. entrance pads one；6b. entrance pads two；7a. filter cores one；7b. filter cores two；9. base lid.

Embodiment

Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in detail.

Embodiment 1

As shown in figure 1, a kind of filament spinning component that prevents adhesion of the present invention, filament spinning component by housing, material cup, base lid, gland, lead Flow block, filter core and spinneret to form, material cup and spinneret are mounted in housing, and base lid and spinneret are respectively arranged in housing Upper and lower part, two imports, respectively import one and import two are provided with base lid, structure pair is provided with described material cup Title, the separate A of chamber one and the B of chamber two, gland include the 4a of the gland one and 4b of gland two, and baffle includes the 5a of baffle one With the 5b of baffle two, filter core includes the 7a of the filter core one and 7b of filter core two；In the described A of chamber one, it is provided with and enters on the 4a of gland one The 44a of melt inlet one corresponding to mouth one, the 44a of melt inlet one are set through the 4a of gland one, and the 4a of gland one is located at the 5a of baffle one Top, and the C of gap one is formed between the 5a of baffle one, the 44a upper ends of melt inlet one connect with import one, lower end and gap one C is connected, and the 7a of filter core one is set on the outside of the 5a of baffle one；Melt inlet two corresponding with import two is provided with the 4b of gland two 44b, the 44b of melt inlet two are set through the 4b of gland two, and the 4b of gland two is installed on above the 5b of baffle two, and with the 5b of baffle two Between form the D of gap two, the 44b upper ends of melt inlet two are connected with import two, and lower end connects with the D of gap two, and the 7b of filter core two is set with On the outside of the 5b of baffle two；The spinneret orifice being connected with material cup is provided with spinneret；In the A of chamber one, the B of chamber two, gland one 4a, the 4b of gland two, the 5a of baffle one, the 5b of baffle two, import one, import two, the 44a of melt inlet one, the 44b of melt inlet two with And bumps are provided with the surface being in contact with polymer melt of spinneret and are prevented adhesion mechanism；The concavo-convex anti-adhesion structure is Equally distributed depression and projection.

, can due to being both provided with concavo-convex anti-adhesion structure on the surface of the part being in contact with molten polymer of filament spinning component To realize anti-adhesive attraction of the polymer melt in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Bumps are anti- Adhesion structure includes sunk part and bossing, and bossing is higher by parts surface setting, utilizes branch between points Support effect reduces directly contacting between highly viscous polymer melt and parts surface, and in the effect of HTHP melt Lower formation gas suspension effect, plays and is prevented adhesion from separate type；Sunk structure plays a part of accommodating levitation gas, with lug boss Divide and cooperate；Raised surface area is 0.5-2 square millimeters, and the surface area of depression is 1-3 square millimeters, it is preferable that raised Surface area be 1 square millimeter, the surface area of depression is 2 square millimeters, and sunk part and lug boss branch point are connected to form essence Close cellular protection grid, parts surface and polymer melt are separated, increase the effect to prevent adhesion.Bossing and recessed It is unsuitable excessive to fall into the area of part, if area is excessive, good preventing adhesiving effect can not be played, itself and polymer melt Situation about being directly in contact with parts surface is without two；Area both it is also unsuitable too small, if area is too small, it can not rise To estimated preventing adhesiving effect, and difficulty of processing also can be very big.Concavo-convex anti-adhesion structure can prepare each of filament spinning component Apply on these parts respectively during individual part, can use the sark with the concavo-convex mechanism that prevents adhesion is directly docile and obedient in portion The form on the surface of part is carried out, and can also be carried out in the form of precision lathe processing, its specific processing method is existing skill Conventional parts machining means in art.

Preferably, several latches are tiltedly installed with described material cup lateral wall, material cup is installed on housing by latch On.

Preferably, it is provided with half-round metal sealing ring between described material cup and spinneret..

Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should Work as understanding, technical scheme can be modified or equivalent substitution, without departing from the reality of technical solution of the present invention Matter and scope.

Claims

The filament spinning component 1. one kind prevents adhesion, filament spinning component is by housing, material cup, base lid, gland, baffle, filter core and spinneret structure Into material cup and spinneret are mounted in housing, and base lid and spinneret are respectively arranged in the upper and lower part of housing, are set in base lid Two imports, respectively import one and import two are equipped with, symmetrical configuration, separate chamber one are provided with described material cup With chamber two, gland includes gland one and gland two, and baffle includes baffle one and baffle two, and filter core includes the He of filter core one Filter core two；In described chamber one, melt inlet one corresponding with import one is provided with gland one, melt inlet one is through pressure Lid one is set, and gland one is located at the top of baffle one, and gap one is formed between baffle one, and the upper end of melt inlet one is with entering Mouth one connects, and lower end connects with gap one, and filter core one is set in the outside of baffle one；It is provided with gland two corresponding with import two Melt inlet two, melt inlet two sets through gland two, and gland two is installed on the top of baffle two, and with baffle two it Between form gap two, the upper end of melt inlet two connects with import two, and lower end connects with gap two, and filter core two is set in baffle two Outside；The spinneret orifice being connected with material cup is provided with spinneret；It is characterized in that：In chamber one, chamber two, gland one, pressure Lid two, baffle one, baffle two, import one, import two, melt inlet one, melt inlet two and spinneret with polymerizeing Bumps are provided with the surface that thing melt is in contact to prevent adhesion mechanism；The concavo-convex anti-adhesion structure for it is equally distributed depression and It is raised.
2. the filament spinning component as claimed in claim 1 that prevents adhesion, it is characterised in that：Depression in the concavo-convex anti-adhesion structure and Projection is spaced to be uniformly distributed；Raised surface area is 0.5-2 square millimeters, and the surface area of depression is 1-3 square millimeters.
3. the filament spinning component as claimed in claim 2 that prevents adhesion, it is characterised in that：It is tiltedly installed with described material cup lateral wall Several latches, material cup are installed on housing by latch.
4. the filament spinning component as claimed in claim 3 that prevents adhesion, it is characterised in that：It is provided with and is used in described material cup madial wall The ladder of stationary gland, baffle and filter core.
5. the filament spinning component as claimed in claim 4 that prevents adhesion, it is characterised in that：Described gland is symmetrical structure, by flat-top The convex platform and column lower cushion cap of cone are formed, and melt inlet is disposed through at gland axially symmetric line, lower cushion cap bottom to It is upper raised in lower cushion cap bottom formation cavity.
The filament spinning component 6. two-chamber as claimed in claim 5 prevents adhesion, it is characterised in that：Described baffle is by the vertex of a cone, post The T-type structure that body is formed, groove is provided with the vertex of a cone, and column side wall is correspondingly arranged on plurality of guiding gutter, vertex of a cone center with groove Overlapping with melt inlet center, vertex of a cone external diameter is big compared with cylinder, and is located at cylinder top.
7. the filament spinning component as claimed in claim 6 that prevents adhesion, it is characterised in that：Described spinneret by it is separate and mutually not The spinneret district one and spinneret district two communicated is formed, a plate two-region structure of spinneret district one and the composition spinneret of spinneret district two.
8. the filament spinning component as claimed in claim 7 that prevents adhesion, it is characterised in that：It is provided between described material cup and spinneret Half-round metal sealing ring.