CN106239761B - A kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors - Google Patents
A kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors Download PDFInfo
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- CN106239761B CN106239761B CN201610738032.0A CN201610738032A CN106239761B CN 106239761 B CN106239761 B CN 106239761B CN 201610738032 A CN201610738032 A CN 201610738032A CN 106239761 B CN106239761 B CN 106239761B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
- B29B7/186—Rotors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors, the closed-smelting machine rotor includes rotor block, and six lug, nibs, including three long ribs and three short ribs are provided on the rotor block, the lug, nib extends from the both ends of the rotor block to intermediate conveyor screw, including beginning and terminal；Several tooth sockets are respectively arranged on the rib top of the lug, nib, upward to the terminal side along the beginning, the width difference of the tooth socket on every lug, nib is constant, and the distance between the tooth socket and tooth socket gradually become smaller.Beneficial effects of the present invention add tooth socket at the lug, nib of closed-smelting machine rotor, change the circumferential flow of sizing material, are conducive to the distribution and dispersion of various fillers, compounding agent；The quantity and its distribution density of tooth socket become close with the increase of the speed of sizing material circumferential flow, act on to enhance the shape sizing material mutual kneading between rib and rib that sticks together, so that sizing material is more chaotic in the indoor flowing of mixing, improve compound quality and refining glue efficiency.
Description
Technical field
The present invention relates to rubber and plastics machine equipment technical fields, it particularly relates to a kind of six rib sawtooth pattern dynamic Varied clearances
Closed-smelting machine rotor.
Background technique
In rubber mixing process, there are mainly two types of forms for movement of the sizing material (rubber and carbon black etc.) in banburying chamber: its
In one is the movements of sizing material circumferential direction, for shearing rotor, sizing material will form two circumferential movements in banburying chamber；Separately
A kind of outer forms of motion is then to be axially moved, and axial movement can play the role of automatic turning glue and mixing, so that sizing material exists
Dispersion mixing tends to optimal in banburying chamber.New interface is generated by the shear tension effect of rotor in flow process, and this is new
Interface is then an important factor for improving small powder mixed effect.
However, for mixer shearing rotor, due to the presence of rotor lug, nib, each point on rotor surface is returned
Turn that radius is not also identical, there is also difference so as to cause the sizing material flowing velocity size at rotor surface each point.In general
With the increase of the radius of gyration, the flowing velocity of sizing material can also increase accordingly.
Still further aspect, for shearing rotor, with the increase of the rotor surface radius of gyration, rotor and mixing chamber interior walls
Between gap can become smaller, the gap that rotor lug, nib top and mixing chamber interior walls are formed is to generate shearing force, and gap becomes smaller directly
It connects temperature when resulting in rubber compounding sharply to increase, easily causes glue and burn phenomenon.
Therefore, how to overcome the shortcomings of present in existing closed-smelting machine rotor, improve refining glue rate and compound quality, become for
The key technical problem of insider's urgent need to resolve.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes that a kind of sawtooth pattern dynamic Varied clearance mixer turns
Son can significantly improve rubber mobility and dispersibility.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors, the closed-smelting machine rotor includes rotor block, the rotor
It is provided with six lug, nibs, including three long ribs and three short ribs on body, the lug, nib is from the both ends of the rotor block to middle screw
Rotation extends, including beginning and terminal, and the beginning is the one end for originating in rotor block end face on lug, nib, the terminal be with it is described
The other end on the corresponding lug, nib in beginning；Several tooth sockets are respectively arranged on the rib top of the lug, nib, along the beginning described in
Terminal side is upward, and the width difference of the tooth socket on every lug, nib is constant, and the distance between the tooth socket and tooth socket gradually become
It is small；The opening direction of the tooth socket is parallel to the end face of the rotor block, is provided with gradually between the tooth socket and adjacent sheaves
The tooth socket spacing of variation；The width difference of adjacent two tooth socket is definite value, and the width difference of the adjacent two tooth socket spacing is also fixed
The size of value, the tooth socket and tooth socket spacing is determined by the length of lug, nib.
Further, on the long rib tooth slot position near beginning position this long rib as the first long rib, edge
The adjacent long rib of the first long rib hand of spiral be the second long rib, along the described first long rib hand of spiral opposite direction it is adjacent
Long rib is the long rib of third, the tooth socket and projected position relationship of the tooth socket spacing on the rotor body axis are as follows: along described
On beginning to the direction of terminal, on the first long rib first on the projected length of first tooth socket spacing=second long rib
The projected length of first tooth socket on the projected length of a tooth socket+long rib of the third, and first tooth socket on the long rib of third
It is projected in the front end of the projection of first tooth socket on the described second long rib.
Further, the closed-smelting machine rotor is shearing rotor, and the lug, nib is located at rotor block basic circle outer surface
On circumference, the length of the lug, nib is determined by the size of rotor block, while being selected by the long rib and the suitable length of short rib
Guarantee that the axial force of rotor is balanced with peripheral force.
Further, the range of the phase difference of three long ribs and the phase difference of three short ribs at 110 ° to 130 °
On, the phase difference of two adjacent lug, nibs is in 110 ° to 130 ° of range.
Further, the depth of the tooth socket on the lug, nib is in respectively on three ribs of the same circumferencial direction of rotor
Two kinds of gap variations of the depth, the depth of the tooth socket are determined by the length of lug, nib and the volume of rotor block.
Further, on any axial cross section of the rotor block, the bottom surface of the tooth socket is on the axial cross section
Projection using the rotor block as the center of circle tooth socket circle on, and the tooth socket circle radius in two kinds of the depth variation.
Preferably, the spiral angular region of the long rib is 15 ° to 50 °, the spiral angular region of the short rib is 20 ° to 55 °.
Beneficial effects of the present invention:
1, add tooth socket at the lug, nib of closed-smelting machine rotor, change the circumferential flow of sizing material, sizing material be forced through lug, nib with
When between mixing locular wall or two rotors, sizing material is also turning not only by Strong shear, the stretching action between rotor and mixing locular wall
There is stronger shear tension to act at sub- lug, nib tooth socket, and then generate more fresh surfaces, is conducive to various fillers, compounding agent
Distribution and dispersion；
2, with shearing heating and the reduction of sizing material Mooney brill degree, the shear action of tooth socket instead at booster action,
And be conducive to the abundant flowing and dispersion of sizing material；
3, the quantity and its distribution density of tooth socket increase with the increase of the speed of sizing material circumferential flow, enhance the shape that sticks together
Sizing material mutual kneading effect between rib and rib so that sizing material is more chaotic in the indoor flowing of mixing, improve compound quality and
Refining glue efficiency.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural representation of the six described according to embodiments of the present invention rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors
Figure；
Fig. 2 is the main view of the six described according to embodiments of the present invention rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors；
Fig. 3 is the side view of the six described according to embodiments of the present invention rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors；
Fig. 4 is the rib expanded view of the six described according to embodiments of the present invention rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors；
Fig. 5 is the rib expanded view of the six described according to embodiments of the present invention rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors
Another form；
Fig. 6 is cross-sectional view at A-A in Fig. 3；
Fig. 7 is cross-sectional view at B-B in Fig. 3；
Fig. 8 is sizing material uniformity test experimental result；
Fig. 9 is the temperature variation curve of mixing process；
Figure 10 is the change curve of elastic shear modulus；
Figure 11 is the experimental result of Payne effect.
In figure:
1, rotor block；2, lug, nib；3, long rib；4, short rib；5, beginning；6, terminal；7, rib top；8, tooth socket；9, tooth socket spacing；
10, deep tooth socket circle；11, the first long rib；12, the second long rib；13, the long rib of third；14, shallow tooth socket circle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in Figure 1,3, the six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotor of one kind according to embodiments of the present invention,
The closed-smelting machine rotor includes rotor block 1, is provided with six lug, nibs 2 on the rotor block 1, including three long rib 3 and three short
Rib 4, the lug, nib 2 extends from the both ends of the rotor block 1 to intermediate conveyor screw, including beginning 5 and terminal 6, and the beginning 5 is prominent
Originate in one end of rotor block end face on rib 2, the terminal 6 is the other end on lug, nib 2 corresponding with the beginning 5；It is described
Several tooth sockets 8 are respectively arranged on the rib top 7 of lug, nib 2, along the beginning 5 to 6 direction of terminal, on every lug, nib 2
The width difference of the tooth socket 8 is constant, and the distance between the tooth socket 8 and tooth socket 8 gradually become smaller.
Wherein, the closed-smelting machine rotor is shearing rotor, and the lug, nib 2 is located at the 1 basic circle outer surface of rotor block circle
Zhou Shang, two long ribs 3 and a short rib 4 originate in one end of the rotor block 1, two short ribs 4 and one
Long rib 3 described in item originates in the other end of the rotor block 1, also, the phase difference and three short ribs of three long ribs 3
For 4 phase difference in the range of 110 ° to 130 °, the spiral angular region of the long rib 3 is 15 ° to 50 °, the spiral of the short rib 4
Angular region is 20 ° to 55 °.
The opening direction of the tooth socket 8 is parallel to the end face of the rotor block 1, sets between the tooth socket 8 and adjacent sheaves 8
It is equipped with tooth socket spacing 9.The rib expanded view of rotor as shown in Figure 4,5, wherein the solid line position on crest line is tooth socket spacing, solid line with
Blank between solid line is tooth socket.In rib expanded view, two long rib, 3, short ribs 4 originate in an end face of rotor block, and two
The short rib 4 of item and one long rib 3 originate in the other end of rotor block, the width of tooth socket 8 and tooth socket spacing 9 by lug, nib 2 length
It determines.
The tooth socket 8 along the beginning 5 to 6 direction of terminal, such as the arrow direction in Fig. 4, on every lug, nib 2
Width difference it is constant, the width difference of the adjacent two tooth socket spacing 9 is definite value.
As shown in figure 4, on the long rib tooth slot position near this long rib of beginning position as the first long rib 11,
Adjacent long rib along described first long 11 hand of spiral of rib is the second long rib 12, along the negative side of described first long 11 hand of spiral of rib
To adjacent long rib be the long rib 13 of third, specifically, the tooth socket 8 and projection of the tooth socket spacing 9 on 1 axis of rotor block
Positional relationship are as follows: on the direction along the beginning to terminal, the projection of first tooth socket spacing is long on the first long rib 11
The projection of first tooth socket is long on the long rib 13 of projected length+third of first tooth socket on degree=second long rib 12
Degree, and on the long rib 13 of third first tooth socket the front end for being projected in the projection of first tooth socket on the described second long rib 12.It is right
In the corresponding projection relation set up, and be suitable on short rib of the projection relation of the tooth socket spacing of any long rib.
Also, on every long rib or short rib, the width difference of adjacent two tooth socket 8 is definite value, adjacent two tooth socket
The width difference of spacing 9 is also definite value.There are 120 ° of phase differences between long rib and long rib, therefore, by the tooth slot position of three long ribs
Same setting phase difference, makes rotor during rotation, and sizing material indoor for mixing may pass through the shear action of tooth socket,
Be conducive to the abundant flowing and dispersion of sizing material.
The depth of tooth socket 8 on the lug, nib 2 is in deep, shallow two kinds of tooth sockets, on any axial cross section of the rotor block 1,
Projection of the bottom surface of the tooth socket 8 on the axial cross section is in two tooth sockets circle with the rotor block 1 for the center of circle, respectively
For on deep tooth socket circle 10, shallow tooth socket circle 14.
In the present embodiment, the depth of the tooth socket 8 on the lug, nib 2 is appointed in deep, shallow two kinds of variations, the rotor block 1
On one axial cross section, projection of the bottom surface of the tooth socket 8 on the axial cross section is in the depth with the rotor block 1 for the center of circle
On tooth socket circle 10, shallow tooth socket circle 14, and the deep tooth socket circle 10, the radius of shallow tooth socket circle 14 are different.By that can be seen in Fig. 6,7
Out, any A-A of selection, on section B-B, the bottom surface of all tooth sockets is arc, and the projection on the axial cross section exists
On tooth socket circle.It is designed by this, tooth socket is substantially lug, nib cutting line groove on rotor block.
Such bottom land is with the periphery of rotor block on concentric cylindrical surface, so as in rotor rotation process
In, tooth socket internal communication can effectively be flowed, and avoid carrying out sizing material accumulation in tooth socket, improve the dispersion effect of sizing material
Fruit.
Six rib sawtooth tangent type rotators are the mixers that the flow mechanism based on traditional six rib tangent type rotators improves
Rotor, by traditional tangent type mixer principle it is found that the quantity of tangent type rotator lug, nib, position, size, spiral angle, top
The parameters such as geometry and internal heat transmission capacity all have a significant impact to the quality for being kneaded product.Thus turn in traditional six ribs
On sub- lug, nib plus the serrated slot of different gap, so that rotor is in the axial direction of cross section and the axial direction of rotor, rotor rib top
Gap with mixing locular wall is unequal, and due to the increase with the radius of gyration, the flowing velocity of sizing material also can be corresponding
Increase.So holding the density to cut line groove can become close with the increase of the radius of gyration.
Compared with traditional tangent type rotator, six its existing similarity of rib sawtooth tangent type rotator, and have its unique excellent
Gesture.Due to cutting line groove at rotor lug, nib there are jagged, at the initial stage of mixing, sizing material be forced through lug, nib and mixing locular wall or
When between two rotors, sizing material is not only by Strong shear, the stretching action between rotor and mixing locular wall, also in rotor lug, nib keyway
Place has stronger shear tension to act on, and then generates more fresh surfaces, be conducive to various fillers, compounding agent distribution with point
It dissipates.
And with the reduction of shearing heating and Mooney viscosity, when viscoelastic sizing material is between lug, nib and mixing locular wall, cut
The dilute sizing material of shear is easier to flow from keyway, to alleviate the strong shearing temperature rise effect of sizing material.And due to rotor lug, nib
Place be provided with it is jagged cut line groove, in mixing process, if two rotors have a velocity gradient, the gap at two rotor lug, nibs, place
In the state of dynamically changeable, intensive shear dispersion when small―gap suture not only may be implemented, but also the distribution cooling effect of wide arc gap can be packed
Fruit, so that the fully dispersed and Silanization reaction for white carbon black in the rotor of sawtooth pattern dynamically changeable gap provides effective guarantor
Barrier.
To examine it to influence the dispersed distribution of small powder, reality is compared using the rotor of zigzag rotor and non-tooth punching shape
It tests.
In embodiment and comparative experiments, traditional all-steel radial tire tread glue formula of use, formula is as shown in table 1 below.
1 tread glue formula of table
Using tread glue formula, using the Haake mixer of this laboratory development, respectively in two different rotor configurations
On be kneaded, analysis comparison is carried out to obtained experimental data.Respectively with regard to heating rate, carbon black dispension degree, mobility, physical machine
Tool performance etc. compares research, obtains influence of two different rotor configurations to properties of rubber.
In embodiment and comparative experiments, calendering process method specifically: revolving speed is set as 80r/min, constant temperature refining glue mode.
Charging sequence: adding virgin rubber to plasticate after 40s, mentions floating weight after adding the half of carbon black total amount and small powder (in addition to sulphur) to be kneaded 40s,
Remaining carbon black is added and white carbon black is kneaded into Haake mixer, then mentions a floating weight for 120 °, 130 ° mention a floating weight,
140 ° mention a floating weight.It is maintained at 140 ° -- one minute between 150 °, to 150 ° of dumpings.
The mixing of six rib sawtooth tangent type rotators and traditional tangent type rotator is carried out respectively using traditional tread glue formula
Experiment.Measure the dispersion degree, mooney viscosity, tensile strength, tearing strength, low strain dynamic shearing of the rotor glue stuff compounding of two kinds of configurations
Modulus etc..And the experimental data of two kinds of rotors is compared, obtains shadow of the rotor for properties of rubber of two kinds of various configurations
It rings.
(1) carbon black dispersion and sizing material analysis of Uniformity
With the dispersion angle value of carbon black dispension degree instrument test sizing material, compare two kinds of configuration rotor carbon black dispension degree situations, ties
Fruit is as shown in table 2 below:
2 carbon black dispension degree of table
Although the close clearance region of sawtooth pattern rotor is less than traditional tangent type rotator as shown in Table 2, since it is narrower
While narrow gap area can provide effective shearing dispersion, when sizing material is being forced through fin and mixing locular wall or two rotors
Between when, sizing material not only by Strong shear, the stretching action between rotor and mixing locular wall, also have at rotor nog keyway compared with
Strong shear tension effect, and then more fresh surfaces are generated, be conducive to the distribution and dispersion of various fillers, compounding agent, because
The carbon black dispension degree of this six ribs sawtooth tangent type rotator is better than traditional tangent type rotator.It can be seen that the shape of high-shear region is imitated
The dispersion coped in carbon black also has important influence.
(2) sizing material uniformity test
Using Alpha company RPA2000 rubber machining analyzer equally can dispersibility to white carbon black and uniformity into
Row analysis, in a piece of sizing material, chooses four position samples and carries out deformation scanning in RPA, if white carbon black dispersion everywhere
Degree is more concentrated, then the uniformity of sizing material is better.
Film 5min is adjusted under conditions of 60 °, and the scanning of deformation twice then is carried out for vulcanization style.As shown in figure 8,
Wherein modulus of shearing is " filler-filler " and " filler and rubber molecular chain " interaction in first time deformation scanning, and
Break the interaction between filler in scanning, and the modulus of shearing scanned for the second time is mainly shown as " filler and strand "
Interaction, can obtain the coefficient of dispersion by following formula:
Wherein payne (max) is the payne effect that the formula that silane coupling agent obtains is not added, i.e., under modulus of shearing curve
It is down to close to the area steadily covered with deformation abscissa.
Modulus of shearing curve is dropped to close to steadily horizontal with deformation when payne (1) position experimental program first time deformation scans
The area that coordinate is covered.
Modulus of shearing curve is dropped to close to steadily horizontal with deformation when second of the deformation of experimental program of payne (2) position scans
The area that coordinate is covered.
By Fig. 8 test result can be seen that the white carbon black good dispersions of six rib sawtooth pattern rotors in traditional tangent type rotator,
And six the uniformity of rib sawtooth pattern rotor glue stuff compounding be better than traditional tangent type rotator, sufficiently demonstrate six rib sawtooth pattern rotors
Be conducive to the theory of the fillers such as reinforcing agent mixing.White carbon black is easily assembled in mixing process, it disperses pole after aggregation
For difficulty, [3] could be scatter by needing repeatedly to shear.Account for portion really it is bright once discussed " the roomy good theory in gap ", refer to
" ' high-shear region is determined ' main problem that the degree of scatter of the compounding agent in rubber compound is proposed by Mckelvcy is to contain out
There is the sizing material of compounding agent to pass through the probability in this region and the product of it and rotor speed and mixing time." and pass through sawtooth
Slot, the gap between the rotor nog and mixing locular wall of increase, increases area of the sizing material by high-shear region, to enhance
The uniformity of the dispersion effect of white carbon black and same batch sizing material.
(3) analysis of heating rate
Fig. 9 is the temperature variation curve of mixing process.By the temperature variation curve of Fig. 9 mixing process it is found that being kneaded just
Phase, the heating rate of sawtooth pattern rotor almost maintain an equal level in traditional tangent type rotator, are because while the narrow of sawtooth pattern rotor
The area in gap is less than traditional tangent type rotator, but gap turns because being smaller than traditional shearing-type at sawtooth pattern rotor nog
Son, therefore the shear action being subject to is better than traditional tangent type rotator, and the initial stage sizing material of mixing is not only by rotor and mixing
Strong shear, stretching action between locular wall, while the shearing heating at serrated slot is obvious, and as shearing heating and Mooney are viscous
The reduction of degree, when viscoelastic sizing material is between fin and mixing locular wall, the sizing material of shear shinning is easier to flow from keyway, from
And alleviate the strong shearing temperature rise effect of sizing material.And sawtooth pattern rotor is because of narrower gap, between mixing locular wall
Frictioning effect becomes apparent from, and is advantageous to transmitting, the cooling of glue temperature.It can be seen that the temperature control effect of sawtooth pattern rotor is obvious
It is better than traditional shearing rotor.
(4) comparison of the rotor configuration to physical property
Sawtooth pattern rotor and the performance comparison of traditional tangent type rotator rubber compound are as shown in table 3.
The comparison of 3 physical property of table
Experiment shows: sawtooth pattern rotor is better than shearing rotor to the mechanical performance that sawtooth pattern rotor is kneaded on the whole, and
And as shown in Table 3, the Mooney viscosity of sawtooth pattern rotor rubber compound is lower than traditional tangent type rotator, is conducive to adding for the later period of sizing material
Work.By the portion's of accounting for really bright influence to closed-smelting machine rotor rib point from the gap of inner wall to mixing it is found that dispersion is different, rotor with it is close
It is just different to the effect of its glue stuff compounding to refine locular wall gap, therefore there has been " close clearance is theoretical " and " ample clearance theory ",
Tetragonous sawtooth tangent type rotator is exactly that both theoretical designs and experiment carried out a little are ground in same rotor upper set
Study carefully.
(5) strain-dependent of different rotor configuration dynamic viscoelastic
Strain-dependent of the Payne effect of RPA commonly used to the dynamic viscoelastic of characterization filler reinforcement sizing material, Payne
The amplitude of variation of elastic shear modulus (G') when the size of effect can be quantified as low strain dynamic to Large strain, i.e. Δ G'.Δ G'=
G'0- G'∞, G'0Indicate the modulus under minimum strain, G'∞Indicate the modulus under maximum strain.Δ G' is bigger, Payne effect
It is higher, filler dispersibility it is poorer, i.e., the interaction between filler aggregation is bigger, and networking degree is higher, at the same filler with
The interaction of rubber is smaller.Influence of the sawtooth pattern rotor to modulus of shearing and Payne effect can be respectively from Figure 10, Tu11Zhong
It shows.
From in Figure 10-11 as can be seen that sizing material is under two kinds of configuration rotors, the G ' of vulcanizate with shear strain increase by
Gradually decline, this is because intermolecular sliding in sizing material, white carbon black network be destroyed and white carbon black and sizing material matrix it
Between sliding caused by.Since the shear action of tetragonous sawtooth pattern rotor is better than traditional tangent type rotator, white carbon black rate of dispersion
Faster than reunion speed, shear effect is obvious, and Silanization reaction efficiency is got higher, and Payne effect dies down, therefore the tetragonous sawtooth of low strain dynamic
The G' value and G'0-G'100% of type rotor are less than traditional tangent type rotator.
It can be obtained according to experimental data, six rib sawtooth tangent type rotators are integrally improved mixing compared to tradition shearing property rotor
Effect, temperature control effect are good.
1) sizing material Mooney viscosity value is lower compared with shearing rotor, the uniformity of the dispersion degree of carbon black and white carbon black, rubber compound
Traditional tangent type rotator is substantially better than in six rib sawtooth tangent type rotators.
2) heating rate is slow relative to shearing rotor when six rib sawtooth tangent type rotators are kneaded, and is more advantageous to white carbon black
The Silanization reaction of sizing material is suitable for temperature-sensitive material and high speed mixing process.
3) sawtooth pattern rotor is because flow effect good to the dispersion effect of filler, sizing material is good, the object of rubber compound
Rationality energy, wet-sliding resistant performance etc. are on the whole better than traditional tangent type rotator.Generally, pass through Experimental Comparison, six ribs saw
Influence of the mixing of tooth tangent type rotator to properties of rubber is integrally better than traditional tangent type rotator.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors, the closed-smelting machine rotor includes rotor block (1), the rotor
Six lug, nibs (2), including three long rib (3) and three short rib (4) are provided on body (1), which is characterized in that the lug, nib (2)
Extend from the both ends of the rotor block (1) to intermediate conveyor screw, including beginning (5) and terminal (6), the beginning (5) is lug, nib (2)
On originate in one end of rotor block end face, the terminal (6) is the other end on lug, nib (2) corresponding with the beginning (5)；Institute
It states and is respectively arranged with several tooth sockets (8) on the rib top (7) of lug, nib (2), along the beginning (5) to the terminal (6) direction, often
The width difference of the tooth socket (8) on lug, nib (2) is constant, and the distance between the tooth socket (8) and tooth socket (8) gradually become
It is small；The opening direction of the tooth socket (8) is parallel to the end face of the rotor block (1), the tooth socket (8) and adjacent sheaves (8) it
Between be provided with the tooth socket spacing (9) gradually changed；The width difference of adjacent two tooth socket (8) is definite value, adjacent two tooth socket
The width difference of spacing (9) is also definite value, and the size of the tooth socket (8) and tooth socket spacing (9) is determined by the length of lug, nib (2)；Institute
Tooth slot position on long rib is stated near this long rib of beginning position as the first long rib (11), along the described first long rib (11)
The adjacent long rib of the hand of spiral is the second long rib (12), along the adjacent long rib of the opposite direction of described first long rib (11) hand of spiral
For the long rib of third (13), the tooth socket (8) and the projected position relationship of tooth socket spacing (9) on the rotor block (1) axis are as follows:
On the direction along the beginning to terminal, projected length=described of the first long upper first tooth socket spacing of rib (11)
The projected length of upper first tooth socket of projected length+long rib of the third (13) of two long upper first tooth socket of rib (12), and the
The front end of the projection for being projected in the described second long upper first tooth socket of rib (12) of three long upper first tooth socket of rib (13).
2. six ribs sawtooth pattern dynamic Varied clearance closed-smelting machine rotor according to claim 1, which is characterized in that the mixer
Rotor is shearing rotor, and the lug, nib (2) is located on the circumference of the rotor block (1) basic circle outer surface, the length of the lug, nib (2)
Degree is determined by the size of rotor block (1), while guaranteeing rotor by the long rib (3) and the suitable length selection of short rib (4)
Axial force is balanced with peripheral force.
3. six ribs sawtooth pattern dynamic Varied clearance closed-smelting machine rotor according to claim 2, which is characterized in that three length
The phase difference of rib (3) and the phase difference of three short ribs (4) are in 110 ° to 130 ° of range, two adjacent lug, nibs (2)
Phase difference in 110 ° to 130 ° of range.
4. six ribs sawtooth pattern dynamic Varied clearance closed-smelting machine rotor according to claim 3, which is characterized in that the lug, nib
(2) depth of the tooth socket (8) on is on three ribs of the same circumferencial direction of rotor, respectively in two kinds of gap variations of the depth, institute
The depth for stating tooth socket (8) is determined by the length of lug, nib (2) and the volume of rotor block (1).
5. six ribs sawtooth pattern dynamic Varied clearance closed-smelting machine rotor according to claim 4, which is characterized in that the rotor block
(1) on any axial cross section, projection of the bottom surface of the tooth socket (8) on the axial cross section is with the rotor block
(1) for the center of circle tooth socket circle (10) on, and the tooth socket circle (10) radius in two kinds of the depth variation.
6. six ribs sawtooth pattern dynamic Varied clearance closed-smelting machine rotor according to claim 1, which is characterized in that the long rib
(3) range of helical angle is 15 ° to 50 °, and the range of the helical angle of the short rib (4) is 20 ° to 55 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610738032.0A CN106239761B (en) | 2016-08-26 | 2016-08-26 | A kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738032.0A CN106239761B (en) | 2016-08-26 | 2016-08-26 | A kind of six rib sawtooth pattern dynamic Varied clearance closed-smelting machine rotors |
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| CN106239761A CN106239761A (en) | 2016-12-21 |
| CN106239761B true CN106239761B (en) | 2019-06-25 |
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| CN110815887B (en) * | 2019-11-20 | 2021-10-15 | 永一橡胶有限公司 | Production method of tire curing bladder |
| CN112549346B (en) * | 2020-10-21 | 2022-02-01 | 青岛科技大学 | Variable-gap rotor for internal mixer |
| CN114248360A (en) * | 2021-12-10 | 2022-03-29 | 青岛科技大学 | Meshing type rotor structure of high-fluidity internal mixer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241085A (en) * | 2011-06-21 | 2011-11-16 | 华东理工大学 | Rotor used for double-rotor continuous mixing mill and mixing mill with same |
| CN102744578A (en) * | 2012-07-23 | 2012-10-24 | 益阳橡胶塑料机械集团有限公司 | Manufacturing method of rotor body of internal mixer |
| WO2013017505A1 (en) * | 2011-07-29 | 2013-02-07 | Compagnie Generale Des Etablissements Michelin | Method for the production of a rubber composition at high temperature |
| CN102941633A (en) * | 2012-10-11 | 2013-02-27 | 大连橡胶塑料机械股份有限公司 | Engagement rotor of internal mixer |
| CN103770232A (en) * | 2013-10-18 | 2014-05-07 | 青岛科技大学 | Internal mixer rotor for mixing short fiber rubber composite materials |
-
2016
- 2016-08-26 CN CN201610738032.0A patent/CN106239761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241085A (en) * | 2011-06-21 | 2011-11-16 | 华东理工大学 | Rotor used for double-rotor continuous mixing mill and mixing mill with same |
| WO2013017505A1 (en) * | 2011-07-29 | 2013-02-07 | Compagnie Generale Des Etablissements Michelin | Method for the production of a rubber composition at high temperature |
| CN102744578A (en) * | 2012-07-23 | 2012-10-24 | 益阳橡胶塑料机械集团有限公司 | Manufacturing method of rotor body of internal mixer |
| CN102941633A (en) * | 2012-10-11 | 2013-02-27 | 大连橡胶塑料机械股份有限公司 | Engagement rotor of internal mixer |
| CN103770232A (en) * | 2013-10-18 | 2014-05-07 | 青岛科技大学 | Internal mixer rotor for mixing short fiber rubber composite materials |
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