CN207808442U - The bar barrel structure of extruder - Google Patents
The bar barrel structure of extruder Download PDFInfo
- Publication number
- CN207808442U CN207808442U CN201721470858.XU CN201721470858U CN207808442U CN 207808442 U CN207808442 U CN 207808442U CN 201721470858 U CN201721470858 U CN 201721470858U CN 207808442 U CN207808442 U CN 207808442U
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- CN
- China
- Prior art keywords
- groove
- extruder
- barrel
- screw rod
- bushing
- Prior art date
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- Expired - Fee Related
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- 230000000977 initiatory effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- -1 and therefore Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 108700041286 delta Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model is related to extruder technology fields, disclose a kind of bar barrel structure of extruder, screw rod including barrel and inside barrel, bushing is studded in the barrel portion of corresponding screw rod feeding section, which offers multiple tracks groove, and multiple tracks groove is uniformly distributed along the circumferential direction of bushing, groove is triangular groove, the frictional force that material and barrel wall can be increased, increases yield to a certain extent, the problem of can also improving feed opening stirring to a certain extent；Groove can also be helicla flute, and the material for super high molecular weight conveys；Screw rod is BM type screw rods, and plasticizing efficiency is high, and plasticizing quality is good, and pressure, temperature fluctuation are small, and exhaust performance is good, and molecular structure is not easy to be destroyed.As long as directly making change on existing extruder, the yield of extruder can be increased, improve the production efficiency of extruder, while reducing the energy consumption of extruder.
Description
Technical field
The utility model is related to the technical fields of extruder, relate generally to barrel and screw-rod structure.
Background technology
Due to the development with modernization, people produce the raising of quality, and household electrical appliances have become the essential east of people
West, with refrigerator panel, the demand of bathtub plate is increasing, so that product producer is reached the situation that supply falls short of demand, how to increase yield
It is the most important thing to solve the problems, such as.This panel is all produced using extruder, it is contemplated that economic benefit, in addition to height at
Originally new extrusion machine equipment is bought to increase sharply outside production capacity, and best solution is to improve existing extruder structure, real
The now balance between expenditure and income.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of bar barrel structure of novel extruder to increase the production of extruder
Amount.
The purpose of this utility model can be realized by following technical proposals：The bar barrel structure of extruder, including barrel
With the screw rod inside barrel, corresponds in the barrel portion of screw rod feeding section and stud with bushing, which offers multiple tracks
Groove, multiple tracks groove are uniformly distributed along the circumferential direction of bushing；Screw rod is BM type screw rods.
Further, feed inlet is radially equipped with the set of the bushing, the initiating terminal of per pass groove is opened in bushing
One end, the end of per pass groove is between feed inlet and the other end of bushing.
Further, the groove is section triangular groove triangular in shape.
Further, the groove is the helicla flute of whole helically threadiness.
Compared with prior art, the utility model has the advantage of：The lining set in the machine barrel of corresponding screw rod feeding section, lining
Set inner wall offers multiple tracks groove, improves the conveying capacity of feeding section, groove is triangular groove, can increase material and barrel wall
Frictional force, the problem of increasing yield to a certain extent, feed opening stirring can also be improved to a certain extent；Groove can also be
Helicla flute, the material for super high molecular weight convey；Screw rod is BM type screw rods, and plasticizing efficiency is high, and plasticizing quality is good, pressure, temperature
Degree fluctuation is small, and exhaust performance is good, and molecular structure is not easy to be destroyed.For product producer, compared to newly buying equipment, this practicality
Novel change is at low cost, as long as directly making change on existing extruder, can increase the yield of extruder, improve extrusion
The production efficiency of machine, meets the demand of production capacity, while reducing the energy consumption of extruder.
Description of the drawings
Fig. 1 is the structural schematic diagram of the bushing in the utility model.
Fig. 2 is the structural schematic diagram of the screw rod in the utility model.
It is marked in figure as follows：
1 bushing, 11 grooves, 12 feed inlets, one end of 13 bushings, 14 bushings the other end；
2 screw rods, 21 BM sections, 22 main threads, 23 deputy threads.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, those skilled in the art is made to become apparent from
How ground understanding puts into practice the utility model.Although describing the utility model in conjunction with its preferred embodiment, these
Embodiment only illustrates, rather than limits the scope of the utility model.
The bar barrel structure of extruder, including barrel and the screw rod 2 inside barrel.Feelings are conveyed according to the extruding of material
Screw rod is usually divided into feeding section by condition（Also known as solid conveying section or feed section）, compression section（Also known as melt zone）And homogenizing zone
（Also known as metering section）Three sections；Barrel, which synchronizes, is divided into three sections, and every section of barrel includes at least a section machine barrel.Material enters from hopper
Machine barrel, screw rod make the rotation in left-hand thread direction, such as the bolt reversion of axial restraint, push nut forward the same, screw rod
Rotation pushes material to move forward.If material and machine tube inner wall have enough frictional force, material that can not follow screw rod completely
Rotation, we claim the transfer efficiency of screw rod to be 1 at this time.But actually such case is impossible, material and screw surface
There are frictional force, certainly exist the movement that material follows screw rod to rotate.Under normal circumstances, defeated under the conditions of smooth barrel inner wall
It send efficiency there was only 0.3-0.4, therefore just has the practice for increasing frictional force in machine tube inner wall.
The actual practice is the bushing 1 in endoporus one kerve of edge of loading hopper seat, because in shorter bushing 1
Hole kerve is easier, and the conveying of solid granulates mainly only occurs in feeding section, therefore has the technical side of the utility model
Case：Bushing 1 is studded in the barrel portion of corresponding screw rod feeding section, referring to Fig. 1, which offers multiple tracks groove 11, more
Road groove 11 is uniformly distributed along the circumferential direction of bushing 1, and the whole trend of per pass groove 11 is arranged along the axial direction of bushing 1, such groove
11 match the conveying capacity that can greatly improve feeding section with screw rod, control the stabilization of yield.
In the specific implementation, referring to Fig. 1, the set of the bushing 1 is radially equipped with the feed inlet 12 of corresponding hopper with it, often
The initiating terminal of road groove 11 is opened in one end 13 of bushing, and the end of per pass groove 11 is located at the other end of feed inlet 12 and bushing
Between 14.
In the specific implementation, referring to Fig. 1, the groove 11 is section triangular groove triangular in shape, under the condition of production, ditch
The particle filled in 11 structure of slot makes the motion state of polymer beads be changed, and has partially removed machine barrel interpolymer
The sliding and rotation of grain, the angles β so as to cause material conveying reduce.
Material is granular bulk cargo state in several screw pitch before feeding section, remove by the spiral shell rib of rotary screw to
It is pushed forward into addition, there is also opposite slidings between the particle of material, and therefore, material is referred to as " non-plug solid in the movement of this section
Movement ".Material particles are since the rental of frictional force is progressively compacted in continuing movement, and screw channel is gradually full of, the fortune of material
It is dynamic to enter that there is no " the plug flow movements " of relative motion between particle.It is changed into the speed of " plug flow " from " non-plug solid ", depends on
Frictional force between material and the frictional force and material particles of barrel wall, frictional force is bigger, this process is faster.Obviously this
Process is faster, indicates that extruder charging rate is faster, and the conveying capacity of extruder is also stronger, helps finally to improve extruder and
Expect speed.Therefore, triangular groove is drawn in charge door, the frictional force of material and barrel wall can be increased, increase yield to a certain extent,
The problem of another effect is the presence for having had charging spout, can improve feed opening stirring to a certain extent.
In the specific implementation, the groove 11 can also be the helicla flute of whole helically threadiness.Some extreme ways
It is the kerve in machine barrel overall length, or pulls out the helicla flute of the big screw pitch reversed with screw rod（Such as the rifling of gun barrel）.Spiral
Slot is used in above the material of super high molecular weight, is primarily due to the material as similar super high molecular weight and machine tube inner wall friction
Coefficient is too small, and when screw rod rotates, material is substantially at " embracing screw rod " state for following screw rod to be rotated together without marching forward, and draws
Such case can make moderate progress after helicla flute, and the material of super high molecular weight can be made to travel forward and realize extrusion.But absolutely
Machine barrel overall length kerve will not be in most cases used, because in most cases, machine barrel feeding section kerve can meet crowded
Go out the needs of technique, it is not necessary that machine barrel overall length kerve makes its manufacture difficulty increase, and manufacturing cost also passs increase again.
Referring to Fig. 2, screw rod 2 is BM type screw rods, and BM type screw rods are also known as separating screw rod（It is commonly called as major-minor tooth screw rod）, feature exists
In：The compression section of screw rod 2, i.e., BM sections 21 shown in figure have a deputy thread 23 for playing barrier action, solid-state plastic cement and melt
The plastic cement melted separates.The outer diameter of deputy thread 23 is small compared with main thread 22, and the material of melting crosses deputy thread 23 and enters melt region.By
It is different in the helix angle of main thread 22, deputy thread 23, by it is axial come based on, solid-state areas by width to narrow, and melt region by
Narrow to wide.The process solid-state and melt of melting are separated, and efficiently avoid fluctuation caused by solid bed breakup.Part is not complete
It when the little particle of full-fusing crosses gap of the deputy thread 23 with material tube inner wall, is melted by high shear, melting rate improves.This
Outside, the increase of deputy thread 23 increases the conduction surface between material and screw rod 2, to improve melting rate.Extrusion fluctuation
Improve the raising with melting rate so that we can improve screw speed, in the precondition for ensureing extrusion amount of substance
Under, extrusion volume production is improved, here it is where the essence of separating screw rod.The operation rotating speed for being generally separated type screw rod is higher than common spiral shell
Bar, therefore the groove depth of compression section always slightly greater than common screw, and other parameters are similar with common screw.Deputy thread 23 and barrel
Gap delta 1 between inner wall is very important parameter, and the too small melt that is unfavorable for passes through；Cross the solid material that conference makes not melt
Pass through, influences extrusion amount of substance, usually：1=δ of δ+(0.2 ~ 0.4), wherein gaps of the δ between main thread 22 and material tube inner wall.
It should be pointed out that for the utility model through absolutely proving, can also have a variety of transformation and the implementation of remodeling
Scheme, it is not limited to the specific embodiment of the above embodiment.Above-described embodiment as just the utility model explanation, and
It is not limitations of the present invention.In short, the scope of protection of the utility model should be including those for ordinary skill
It obviously converts or substitutes and retrofit for personnel, and be determined by the appended claims.
Claims (1)
1. the bar barrel structure of extruder, including barrel and the screw rod inside barrel, which is characterized in that corresponding screw rod feeding section
Barrel portion in stud with bushing, which offers multiple tracks groove, and multiple tracks groove is uniformly distributed along the circumferential direction of bushing；Screw rod
For BM type screw rods；Feed inlet is radially equipped with the set of the bushing, the initiating terminal of per pass groove is opened in one end of bushing,
Between feed inlet and the other end of bushing, per pass groove extends straight along the axial direction of bushing for the end of per pass groove；Institute
It is section triangular groove triangular in shape to state groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470858.XU CN207808442U (en) | 2017-11-07 | 2017-11-07 | The bar barrel structure of extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470858.XU CN207808442U (en) | 2017-11-07 | 2017-11-07 | The bar barrel structure of extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207808442U true CN207808442U (en) | 2018-09-04 |
Family
ID=63334047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721470858.XU Expired - Fee Related CN207808442U (en) | 2017-11-07 | 2017-11-07 | The bar barrel structure of extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207808442U (en) |
-
2017
- 2017-11-07 CN CN201721470858.XU patent/CN207808442U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 |