CN108656497A - A kind of multiscrew planetary extruder - Google Patents
A kind of multiscrew planetary extruder Download PDFInfo
- Publication number
- CN108656497A CN108656497A CN201710188821.6A CN201710188821A CN108656497A CN 108656497 A CN108656497 A CN 108656497A CN 201710188821 A CN201710188821 A CN 201710188821A CN 108656497 A CN108656497 A CN 108656497A
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- planetary
- screw
- multiscrew
- screw rod
- extrusion
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- 238000001125 extrusion Methods 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006068 polycondensation reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 244000228957 Ferula foetida Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
-
- 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
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/485—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with three or more shafts provided with screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/425—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders using three or more screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/435—Sub-screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of multiscrew planetary extruders, its key points of the technical solution are that including front end cylinder, middle cylinder, rear end cylinder, extrusion screw rod, the extrusion screw rod passes through front end cylinder, middle cylinder, rear end cylinder, the middle cylinder is equipped with exhaust outlet, multiscrew extruding part is equipped in the middle cylinder, the multiscrew extruding part includes that more axis are arranged in parallel and intermeshing planetary-screw, the planetary-screw is engaged with extrusion screw rod, the extrusion screw rod is equipped with the groove that planetary-screw is placed, the adjacent planetary-screw intermeshing, axis centre distance i.e. between planetary-screw is less than the outside diameter of planetary-screw, the end of the planetary-screw is drivingly connected by driving mechanism and extrusion screw rod.It is realized between this extruder planetary-screw to the surface of material more efficiently newer effect of active；Multiscrew extruding part stable structure reduces planetary-screw and the case where axial and circumferential play occurs.
Description
Technical field
The present invention relates to a kind of extrusion equipment fields, more specifically, it relates to a kind of multiscrew planetary extruder.
Background technology
Screw extruder belongs to one kind of plastic processing equipment.According to the difference of application process, extruder can be divided into
The different purposes extruders such as type extruder, modified processing extruder, polymerisation type extruder, large-scale granulating extruder.
According to extruder screw quantity point, single screw extrusion machine, double screw extruder, multi-screw extruder etc. can be divided into.Further,
Double screw extruder can be divided into full hing surface in the same direction, the complete incorgruous double spiral shells of engagement type according to screw-type differentiation
Bar extruder, non-engagement type parallel dual-screw extruding machine, conical parallel dual-screw extruding machine, taper counter rotation twin screw extruder,
The different types such as non-engagement type counter rotation twin screw extruder.Multi-screw extruder includes that planet multi-screw extruder and multiscrew squeeze
Go out machine.Planet multi-screw extruder typically refers to full engagement type counter rotating planetary extruder, and this kind of extruder is mainly used for gathering
Vinyl chloride is processed.It is good to be mainly characterized by self-cleaning property, temperature control is accurate, and Surface Renewal is efficient.
During partial reaction processed and applied, usually require that extruder has efficient surface update and efficiently mixing work(
Energy.For the processing of polyester-based polymer material, the efficient surface of material updates while obtaining high vacuum effect for control
The reaction that occurs in extrusion processed tends to extremely important, avoid hydrolysis simultaneously so that reaction process towards polycondensation direction into
Row, can be to avoid making in extrusion process material molecule amount decline.
Notification number is that the Chinese patent of CN1568251A discloses a kind of extruder for obtaining plastic solution, this to squeeze
Go out machine particle is heated and rolled by the single or double screw extruder of heating for commercial usual plastic grain,
And for realizing polycondensation and polymerization by means of multiscrew basic components and using the chamber that vacuumizes, for remove low molecule at
Point and/or the objects such as foaming agent, and for obtaining bigger molecular dimension and thus obtain higher viscosity, and improve by melt
The mechanically supported of manufactured plastics, it allows melt being processed into the thin layer for just providing big contact area in the air, and by
This provides plastics melt with simple measure, it ensures arbitrarily degassing and polycondensation.Although the envelope of screw shaft is at least more
On the polycondensation position of Screw Extrusion component between each other, for extruder screw or its shaft part and for surrounding the screw shaft
Cylinder body region be more than or equal to zero spacing distance, but between the multiscrew in the patent can not direct interaction to
The more efficient newer effect of active is realized to material.
Invention content
It is excellent in view of the deficiencies of the prior art, the present invention intends to provide a kind of multiscrew planetary extruder
Point is between planetary-screw also realize surface of material actively newer effect.
To achieve the above object, the present invention provides following technical solutions：A kind of multiscrew planetary extruder, including front end
Cylinder, middle cylinder, rear end cylinder, extrusion screw rod, the extrusion screw rod pass through front end cylinder, middle cylinder, rear end cylinder, institute
It states middle cylinder and is equipped with exhaust outlet, multiscrew extruding part, the multiscrew extruding part packet are equipped in the middle cylinder
Include that more axis are arranged in parallel and intermeshing planetary-screw, the planetary-screw are engaged with extrusion screw rod, i.e. planetary-screw
Central axis and the distance between extrusion screw rod central axis be less than the sum of planetary-screw radius and extrusion screw rod radius, it is described
Extrusion screw rod is equipped with the groove that planetary-screw is placed, the adjacent planetary-screw intermeshing, i.e., between planetary-screw
Axis centre distance is less than the outside diameter of planetary-screw, and the end of the planetary-screw is driven by driving mechanism and extrusion screw rod
Dynamic connection.
By using above-mentioned technical proposal, extrusion screw rod in the rotation, can drive planetary-screw to rotate, planet
Screw rod realizes rotation under the drive of extrusion screw rod and the revolution of opposite extrusion screw rod, planetary-screw adjacent at this time are mutual
Engagement contradicts, and can also realize the effect of update deliming between planetary-screw to material, and planetary-screw is real when realizing rotation
The active that showed has certain extruding and stretching to realize to material material between planetary-screw updates, and planetary-screw is revolving round the sun
When, planetary-screw carries out Surface Renewal to the material of free chamber portion, is conducive to improve the newer efficiency of material.
The present invention is further arranged to：The outer circle of the two neighboring planetary-screw there are two kinds of engaging structures,
Respectively full engagement, part are engaged.
By using above-mentioned technical proposal, different meshing states, be conducive to improve between adjacent planetary-screw to object
The more new effects of material.
The present invention is further arranged to：It mutually engages entirely between the adjacent planetary-screw and rotation in the same direction is presented
Turn, the spiral groove depth of the planetary-screw is equal, and there are two kinds of equal or unequal setting sides for the screw pitch of the planetary-screw
Formula, the axis centre distance of the adjacent planetary-screw are equal to the sum of exradius and screw channel bottom radius of planetary-screw and add again
Upper back lash, 0.00001 ~ 0.1 times of back lash ranging from planetary-screw outside diameter.
By using above-mentioned technical proposal, mutually full engagement between planetary-screw realizes planetary-screw to material active
Newer function and effect, when the spiral groove depth on planetary-screw does not change, the equal situation of screw pitch can be stablized
It realizes and actively newer effect is carried out to material, after screw pitch changes, the space between screw pitch changes, and is generated to material
Certain extruding happens variation, further improves to the newer efficiency of material.
The present invention is further arranged to：The adjacent planetary-screw partly engages and rotation in the same direction is presented between each other
Turn, i.e., in some or all of length of planetary-screw, the screw channel bottom diameter of the outer circle of planetary-screw and adjacent planetary-screw
The distance between, be more than or equal to planetary-screw outside diameter to 0.1 times of distance, the screw pitch of planetary-screw there are two types of set-up mode,
Respectively uniform pitch, varying pitch.
By using above-mentioned technical proposal, planetary-screw partly engages between each other, between adjacent planetary-screw there are
Gap, more materials can enter between planetary-screw, improve the amount that planetary-screw actively updates material.Planetary-screw
On screw pitch and spiral groove depth there are various ways can effectively be carried by the screw pitch set-up mode different with spiral groove depth
Height is to the newer efficiency of material.
The present invention is further arranged to：The driving mechanism includes being arranged with planetary-screw both ends and coaxial tooth
It takes turns, extrusion screw rod is equipped with the gear grooved being meshed with gear, is equipped with the gear ring being meshed with gear in middle cylinder.
By using above-mentioned technical proposal, revolution and rotation occur for band moving gear when extrusion screw rod rotates, effectively
Revolution and rotation may be implemented in planetary-screw, is conducive to the work that can stablize of entire extruder.
The present invention is further arranged to：The inner wall of the gear ring and middle cylinder contradict and stretch out middle cylinder respectively with
Front end cylinder, rear end cylinder inner wall contradict, and circumferentially fixed, prevent from rotating.
By using above-mentioned technical proposal, gear ring is conducive to entire driving mechanism and smoothly runs, gear ring respectively with front end
Cylinder, rear end cylinder inner wall contradict, the positional structure for being conducive to gear ring is stablized, reduce gear ring occur it is mobile.
The present invention is further arranged to：Two adjacent gears do not engage mutually.
By using above-mentioned technical proposal, adjacent gear is not engaged with conducive to the linkage between planetary-screw, is reduced
Occur the case where gear tooth interference in the process of work, to be conducive to the work that planetary-screw can be stablized, ensure that more spiral shells
Bar extruding part can smoothly be run.
The present invention is further arranged to：The extrusion screw rod is equipped with limitation planetary-screw axis close to the end of planetary-screw
To the positioning disk of play.
By using above-mentioned technical proposal, positioning disk effectively defines the position of planetary-screw, reduces planetary-screw
There is the case where axial and circumferential play.
The present invention is further arranged to：The front end cylinder is solid by several screws and middle cylinder with rear end cylinder
Fixed connection.
By using above-mentioned technical proposal, consolidating between front end cylinder, rear end cylinder and middle cylinder is realized by screw
Fixed connection, is conducive to the stability of entire extruder, while screw can also realize the work of fast quick-detach.
In conclusion the invention has the advantages that：
1, the material that higher efficiency may be implemented between intermeshing planetary-screw exchanges and Surface Renewal；
2, the cavity free volume part between planetary-screw and middle cylinder also contributes to surface of material update；
3, efficiently surface of material update efficiency can contribute to exhaust devolatilization effect, for esters polymer processing, solvent type
Reactive extrursion process, low VOC exhaust devolatilization processes are very suitable for；
4, multiscrew extruding part stable structure, it is possible to reduce the play of axial and circumferential occurs in planetary-screw, improves and uses the longevity
Life.
Description of the drawings
Fig. 1 is the structural schematic diagram for showing embodiment one；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is the sectional view of B-B in Fig. 1；
Fig. 4 is the structural schematic diagram for showing adjacent two planetary-screws and engaging entirely；
Fig. 5 is the structural schematic diagram for showing adjacent two planetary-screw parts engagement；
Fig. 6 is the structural schematic diagram for showing embodiment two.
Reference numeral：1, front end cylinder；2, middle cylinder；3, rear end cylinder；4, extrusion screw rod；41, groove；42, it positions
Disk；5, planetary-screw；6, driving mechanism；61, gear；62, gear grooved；63, gear ring；7, screw；8, exhaust outlet.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one：A kind of multiscrew planetary extruder, as shown in Figure 1, including front end cylinder 1, middle cylinder 2, rear end
Cylinder 3, extrusion screw rod 4 are achieved a fixed connection by screw 7 between front end cylinder 1, rear end cylinder 3 and middle cylinder 2, are made
The overall stability of extruder can effectively be ensured by being connected with screw 7, reduce extruder and occur pine during use
Dynamic unstable situation, while the connection of screw 7 also has benefit easy to disassemble, when extruder, which goes wrong, needs maintenance, leads to
It crosses the realization of quick screw 7 to work to the Quick overhaul of extruder, during installing and dismounting, certain work can be saved
Time effectively raises whole working efficiency.On middle cylinder 2 be equipped with exhaust outlet 8, exhaust outlet 8 generally have vacuum or
Person's nature two ways selectes suitable exhaust outlet 8 according to different production requirements.
As illustrated in fig. 1 and 2, extrusion screw rod 4 is one of most important component of entire extruder, and extrusion screw rod 4 runs through front end
Cylinder 1, middle cylinder 2, rear end cylinder 3 and coaxial, are internally provided with multiscrew extruding part, multiscrew is squeezed out in middle cylinder 2
As the core component of entire extruder, work can be squeezed out with the realization of efficient stable by being effectively guaranteed extruder for part.It is more
Screw Extrusion part includes that more axis are arranged in parallel and competing planetary-screw 5, while all planetary-screws 5 are also
It is contradicted with extrusion screw rod 4, several grooves 41 placed for planetary-screw 5, adjacent planetary-screw is additionally provided on extrusion screw rod 4
Intermeshing contradicts between 5 and outer distance of round is less than zero, and extrusion screw rod 4 can drive planetary-screw 5 together during rotation
It moves, planetary-screw 5 will produce rotation and the state to revolve round the sun occurs around extrusion screw rod 4 at this time, planet adjacent at this time
Screw rod 5 may be implemented to the newer effect of material active, and planetary-screw 5 realizes planetary-screw 5 when realizing rotation
Between there is certain extruding and stretching to realize active to material material to update, planetary-screw 5 is when revolution, planet
Screw rod 5 carries out Surface Renewal to the material of free chamber portion, is conducive to improve the newer efficiency of material.
Planetary-screw 5 is equipped with more, realizes newer effect to material to effectively improve planetary-screw 5, uses phase
The planetary-screw 5 that uniform pitch, spiral groove depth change, is more than close to rear end by the spiral groove depth of front end cylinder 1 on planetary-screw 5
The depth of cylinder 3, in the case where becoming smaller, the free space between adjacent planetary-screw 5 can also become smaller spiral groove depth, to
The effect that planetary-screw 5 is updated material can be improved.Screw pitch on planetary-screw 5 in the case where not changing,
When spiral groove depth changes, the space between screw pitch changes, and generating certain extruding to material happens variation, into
One step is improved to the newer efficiency of material.
When planetary-screw 5 changed using phase uniform pitch, spiral groove depth, in the case where not influencing normal work,
There may be the two states of full engagement and part engagement for the spiral shell rib engagement of adjacent planetary-screw 5（As shown in Figures 4 and 5）, nibble entirely
The state of conjunction is that two adjacent planetary-screws 5 mutually engage and present rotating Vortex entirely, in the axis of adjacent planetary-screw 5
Heart distance is equal to the sum of exradius and screw channel bottom radius of planetary-screw and adds back lash, and back lash is ranging from gone
0.00001 ~ 0.1 times of starshell bar outside diameter.The state of part engagement is that adjacent planetary-screw 5 between each other engage by part
And rotating Vortex is presented, i.e., in some or all of length of planetary-screw 5, the outer circle of planetary-screw 5 and adjacent planet
The distance between screw channel bottom diameter of screw rod is more than or equal to 5 diameter of planetary-screw outer circle to 0.1 times of distance.By changing adjacent rows
Space length between starshell bar 5 is effectively guaranteed planetary-screw 5 and carries out actively newer work to material.
As shown in figs. 1 and 3, extruder needs to ensure the stability of multiscrew extruding part, planet spiral shell at work
The both ends of bar 5 are drivingly connected by driving mechanism 6 and extrusion screw rod 4, and driving mechanism 6 is ensureing the same of the movement of planetary-screw 5
When, it is also beneficial to ensure the stability of multiscrew extruding part.Driving mechanism 6 includes setting with 5 both ends of planetary-screw and together
The gear 61 of axis, extrusion screw rod 4 be equipped with the gear grooved 62 being meshed with gear 61, is equipped in middle cylinder 2 and 61 phase of gear
The gear ring 63 of engagement, for extrusion screw rod 4 when movement, groove 41 generates movement, while adjacent gear 61 with moving gear 61
Between do not engage mutually, there are certain gap between adjacent 61 outer circle of gear, be effectively guaranteed entire multiscrew and squeeze
Go out the linkage of part, reduces planetary-screw 5 and occur rotating uncoordinated and generating interference, the feelings for causing extruder to occur getting stuck
Condition；It rotates to reach planetary-screw 5, realizes the working condition of the revolution of planetary-screw 5, gear 61 is followed by extrusion
While screw rod 4 rotates, itself is engaged with gear grooved 62, gear ring 63 there is a situation where rotation, to reach drive planet
The working condition of rotation occurs for screw rod 5.It, will be in gear ring 63 and middle cylinder 2 in order to ensure the overall stability of driving structure
Wall contradicts and stretches out inner wall of the middle cylinder 2 respectively with front end cylinder 1, rear end cylinder 3 and contradicts, and gear ring 63 is conducive to entirely drive
Motivation structure 6 is smoothly run, and inner wall of the gear ring 63 respectively with front end cylinder 1, rear end cylinder 3 contradicts, and is conducive to gear ring 63
Positional structure is stablized, and reducing gear ring 63, there is a situation where movements, to further improve entire multiscrew extruding part
Stability.
Driving mechanism 6 can effectively ensure the work that multiscrew extruding part can be stablized, and squeeze out at work,
More planetary-screws 5 in more spiral shell extrusion parts are constantly in load-carrying working condition, and planetary-screw 5 at work may be used
The case where axial float can be will appear, reduces planet spiral shell to effectively ensure the stability of planetary-screw 5 in use
There is the case where axial float in bar 5, and limitation 5 axial float of planetary-screw is equipped with close to the both ends of planetary-screw 5 in extrusion screw rod 4
Positioning disk 42, positioning disk 42 effectively defines the position of planetary-screw 5, reduces planetary-screw 5 and axial and circumferential occur
The case where play, while in order to effectively improve the stability of positioning disk 42, positioning disk 42 is arranged to truncated cone-shaped, positioning disk 42
The diameter that side is contradicted with planetary-screw 5 is more than the diameter far from 5 side of planetary-screw, the positioning disk 42 of truncated cone-shaped, two bottoms
It is poor that there are sizes in face, and the section of similar triangle is formed with side wall, has certain stability, reduces positioning disk 42 and damage
Bad situation.
Embodiment two：A kind of multiscrew planetary extruder, with embodiment one the difference is that, as shown in fig. 6, planet spiral shell
Bar 5 is equipped with more, and newer effect, spiral shell equal using spiral groove depth are realized to material in order to effectively improve planetary-screw 5
Away from the planetary-screw 5 to change, the screw pitch at both ends is less than intermediate screw pitch on planetary-screw 5, and 5 spiral groove depth of planetary-screw exists
The case where not changing when screw pitch changes, also can make the free space between adjacent planetary-screw 5 change
Become, free space changes from small to big become smaller again during, be conducive to improve planetary-screw 5 to the more new effects of material.This phase
The spiral shell rib of two adjacent planetary-screws 5 is full meshing state（As shown in Figure 4）, the spiral shell rib engaged entirely further improves planet spiral shell
More new effects of the bar 5 to material.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (9)
1. a kind of multiscrew planetary extruder, including front end cylinder（1）, middle cylinder（2）, rear end cylinder（3）, extrusion screw rod
（4）, the extrusion screw rod（4）Across front end cylinder（1）, middle cylinder（2）, rear end cylinder（3）, the middle cylinder（2）On
Equipped with exhaust outlet（8）, the middle cylinder（2）Interior to be equipped with multiscrew extruding part, the multiscrew extruding part includes more
Axis is arranged in parallel and intermeshing planetary-screw（5）, it is characterized in that：The planetary-screw（5）With extrusion screw rod（4）It nibbles
It closes, i.e. planetary-screw（5）Central axis and extrusion screw rod（4）The distance between central axis is less than planetary-screw（4）Radius
With extrusion screw rod（4）The sum of radius, the extrusion screw rod（4）It is equipped with planetary-screw（5）The groove of placement（41）, described adjacent
Planetary-screw（5）Intermeshing, i.e. planetary-screw（4）Between axis centre distance be less than planetary-screw（4）Outer circle it is straight
Diameter, the planetary-screw（5）End pass through driving mechanism（6）With extrusion screw rod（4）It is drivingly connected.
2. a kind of multiscrew planetary extruder according to claim 1, it is characterized in that：The two neighboring planetary-screw
（5）Outer circle there are two kinds of engaging structures, respectively full engagement, part are engaged.
3. a kind of multiscrew planetary extruder according to claim 2, it is characterized in that：The adjacent planetary-screw（5）It
Between mutually engage and present rotating Vortex, the planetary-screw entirely（5）Spiral groove depth it is equal, the planetary-screw（5）Spiral shell
Away from there are equal or unequal two kind set-up mode, the adjacent planetary-screws（5）Axis centre distance be equal to planet spiral shell
Bar（5）Exradius and the sum of screw channel bottom radius add back lash, back lash ranging from planetary-screw（5）Outer circle
0.00001 ~ 0.1 times of diameter.
4. a kind of multiscrew planetary extruder according to claim 2, it is characterized in that：The adjacent planetary-screw（5）Phase
Rotating Vortex is partly engaged and presents between mutually, i.e., in planetary-screw（5）Some or all of length in, planetary-screw（5）
Outer circle and adjacent planetary-screw（5）The distance between screw channel bottom diameter, be more than or equal to planetary-screw（5）Outside diameter arrives
0.1 times of distance, planetary-screw（5）Screw pitch there are two types of set-up mode, respectively uniform pitch, varying pitch.
5. a kind of multiscrew planetary extruder according to claim 1, it is characterized in that：The driving mechanism（6）Including setting
Set with planetary-screw（5）Both ends and coaxial gear（61）, extrusion screw rod（4）It is equipped with and gear（61）The gear being meshed
Slot（62）, middle cylinder（2）It is inside equipped with and gear（61）The gear ring being meshed（63）.
6. a kind of multiscrew planetary extruder according to claim 5, it is characterized in that：The gear ring（63）With middle cylinder
（2）Inner wall contradict and stretch out middle cylinder（2）Respectively with front end cylinder（1）, rear end cylinder（3）Inner wall contradict.
7. a kind of multiscrew planetary extruder according to claim 6, it is characterized in that：Two adjacent gears（61）
It does not engage mutually.
8. a kind of multiscrew planetary extruder according to claim 7, it is characterized in that：The extrusion screw rod（4）Close to row
Starshell bar（5）End be equipped with limitation planetary-screw（5）The positioning disk of axial float（42）.
9. a kind of multiscrew planetary extruder according to claim 8, it is characterized in that：The front end cylinder（1）With rear end
Cylinder（3）Pass through several screws（7）With middle cylinder（2）It is fixedly connected.
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Effective date of registration: 20210428 Address after: 211100 Dongshan Street industrial concentration area, Jiangning District, Nanjing, Jiangsu Applicant after: USEON (NANJING) EXTRUSION MACHINERY Co.,Ltd. Address before: 211211, Nanjing City, Jiangsu province Lishui District, East screen Town Lake Road Applicant before: NANJING USEON EXTRUSION EQUIPMENT Co.,Ltd. |
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Application publication date: 20181016 |