CN110103431A - A kind of plastic-injection moulding machine and its injection screw - Google Patents
A kind of plastic-injection moulding machine and its injection screw Download PDFInfo
- Publication number
- CN110103431A CN110103431A CN201910472881.XA CN201910472881A CN110103431A CN 110103431 A CN110103431 A CN 110103431A CN 201910472881 A CN201910472881 A CN 201910472881A CN 110103431 A CN110103431 A CN 110103431A
- Authority
- CN
- China
- Prior art keywords
- band
- injection
- screw
- wave
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 47
- 239000007924 injection Substances 0.000 title claims abstract description 47
- 238000001746 injection moulding Methods 0.000 title claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007906 compression Methods 0.000 claims abstract description 25
- 238000009827 uniform distribution Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 7
- 239000004033 plastic Substances 0.000 abstract description 7
- 229920003023 plastic Polymers 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000011256 inorganic filler Substances 0.000 abstract description 5
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 5
- 230000000295 complement effect Effects 0.000 abstract description 3
- 238000000518 rheometry Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/60—Screws
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of plastic-injection moulding machine and its injection screw, injection screw include threaded portion and mixing elements interconnected, and threaded portion is equipped with external screw thread, and threaded portion is disposed with feeding section, compression section and wave homogenizing zone along the external screw thread hand of spiral；At least six waves are provided on wave homogenizing zone, per pass wave is made of the first band of 180 degree phase difference and second band respectively, first band and/or second band be set for the eccentric and respectively by along screw rod circumference uniform distribution trough and wave crest form.The improvement that the present invention passes through above structure; it not only solves to improve injection screw plastics homogeneity question in plasticizing process; plastics performance can also be protected, with realize injection screw in plasticizing quality, rapidly and efficiently, versatility and four aspect attainability of energy consumption can be complementary effect；It can also be widely used in universal all types of reciprocating screw plastic-injection moulding machines simultaneously, processing is various to cut quick property high molecular material or high molecular material+inorganic filler.
Description
Technical field
The present invention relates to a kind of plastic-injection moulding machine and its injection screws.
Background technique
High molecular material machinery is the mechanized equipment of polymer material molding, belongs to advanced rapid forming equipment, and work is special
Property is long-term continuous operations, the molding stability of each period injection molding machine and be rapidly and efficiently each equipment enterprise and manufacturing enterprise
The performance paid special attention to, core component are screw rods, the quality and efficiency of performance direct relation product, at present conventional reciprocating formula spiral shell
Although bar structure type is varied, mainly from plasticizing quality and rapidly and efficiently and versatility etc. considers, tradition is mentioned
Plasticizing quality and rapidly and efficiently and the modes such as versatility are few is risen, several persons are difficult to take into account, processing macro-molecular material+inorganic filler
When, glass is such as lengthened, classic screw is more difficult to guarantee the uniformity of Length of Glass Fiber and plasticizing quality, while also needing to consider that energy consumption is asked
Topic, this is that there are multiple technical contradictions, therefore improving this relationship is our problems to be solved.Therefore, it is necessary to
It is further improved.
Summary of the invention
The purpose of the present invention be intended to provide it is a kind of it is simple and reasonable, have excellent performance, plasticizing quality is good, rapidly and efficiently, it is logical
With property is strong, low energy consumption and safe and reliable plastic-injection moulding machine and its injection screw, to overcome deficiency in the prior art
Place.
By a kind of injection screw that this purpose designs, including threaded portion interconnected and mixing elements, threaded portion
It is equipped with external screw thread, it is characterised in that: threaded portion is disposed with feeding section, compression section and wave along the external screw thread hand of spiral
Homogenizing zone；At least six waves are provided on the wave homogenizing zone, per pass wave is respectively by the first wave of 180 degree phase difference
Section and second band are constituted, and first band and/or second band are set for the eccentric and respectively by the trough along screw rod circumference uniform distribution
It is formed with wave crest.
The center of the center deviation injection screw of the first band and its eccentricity is S1, the center of second band is inclined
Center and its eccentricity from injection screw are S2, the eccentric direction of first band and the eccentric direction of second band on the contrary, partially
The heart is identical as eccentricity S2 away from S1 and is 0.06d-0.03d；Wherein, d is the outer diameter of injection screw.
There is the feeding section certain length L1, length L1 to be greater than 8d.
The compression section has certain length L2, and length L2 length is greater than 3d-5d.
The compression ratio of the compression section is less than 1.8；Wherein, at the end of compression ratio is the depth of feeding section screw channel and compression section
The ratio of the depth of screw channel.
There is the wave homogenizing zone certain length L3, length L3 to be greater than 7d.
The mixing elements have certain length L4 and by thread segment parts interconnected and mixing part part structure
At.
The length L1, length L2, length L3, length L4 summation at least more than 22d.
Several single thread spiral shell ribs are additionally provided on the feeding section, compression section and wave homogenizing zone.
A kind of plastic-injection moulding machine, which is characterized in that including above-mentioned injection screw；The plastic-injection moulding machine
Including at least rubber melting cylinder and lower hopper, wherein injection screw is rotatably arranged in rubber melting cylinder, and lower hopper is located at the upper of feeding section
It is square and interconnected with rubber melting cylinder；The inner wall of the wave crest and rubber melting cylinder forms certain spacing H4, trough and rubber melting cylinder
Inner wall forms certain spacing H5.
The present invention holds rheology reversely eccentric wave single-wormed screw and tensile deformation based on waiting by the improvement of above structure
Intensifying method not only efficiently solves and improves injection screw plastics homogeneity question in plasticizing process, moreover it is possible to effectively keep away
Having exempted from injection screw Strong shear leads to plastics and molecular chain rupture, and plastics performance is made to lead to the problem of variation, to the greatest extent may be used
Can protect plastics performance, with realize injection screw in plasticizing quality, rapidly and efficiently, four aspect attainability of versatility and energy consumption
The complementary effect of energy；It can also be widely used in universal all types of reciprocating screw plastic-injection moulding machines simultaneously, process various
Cut quick property high molecular material or high molecular material+inorganic filler.
In terms of comprehensive, with it is simple and reasonable, have excellent performance, plasticizing quality is good, rapidly and efficiently, versatile, energy
The features such as low and safe and reliable is consumed, it is practical.
Detailed description of the invention
Fig. 1 is the injection screw structural schematic diagram of first embodiment of the invention.
Fig. 2 is the injection screw and plastic-injection moulding machine assembling structure schematic diagram of first embodiment of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, Fig. 2, this injection screw, including threaded portion interconnected and mixing elements 1 are set on threaded portion
There is external screw thread, threaded portion is disposed with feeding section, compression section and wave homogenizing zone along the external screw thread hand of spiral；The wave
At least six waves are provided on unrestrained homogenizing zone, per pass wave is respectively by the first band A of 180 degree phase difference and second band B
It constitutes, first band A and/or second band B are set for the eccentric and respectively by the trough 3,6 and wave crest along screw rod circumference uniform distribution
4,5 composition.
Further speaking, the center 9 of injection screw is deviateed at the center 10 of first band A and its eccentricity is S1, the second wave
The center 9 of injection screw is deviateed at the center 8 of section B and its eccentricity is S2, and the eccentric direction of first band A is with second band B's
Eccentric direction is on the contrary, eccentricity S1 is identical as eccentricity S2 and be 0.06d-0.03d；Wherein, d is the outer diameter of injection screw.
Further speaking, there is feeding section certain length L1, length L1 to be greater than 8d.
Further speaking, compression section has certain length L2, and length L2 length is greater than 3d-5d.
Further speaking, the compression ratio of compression section is less than 1.8；Wherein, compression ratio is the depth and pressure of feeding section screw channel 11
The ratio of the depth of screw channel 7 at the end of contracting section.
Further speaking, there is wave homogenizing zone certain length L3, length L3 to be greater than 7d.
Further speaking, mixing elements 1 are for increasing colour mixture and plasticizing, with certain length L4 and by mutually interconnecting
The thread segment part and mixing part part connect is constituted.Wherein, the length L4 of mixing elements 1 and structure can be fixed according to product demand
System, structure are not limited only to figure view structure, and outside the structure except thread segment part, other are totally all considered as mixing elements, it is proposed that take
It is preferable with using effect.
Further speaking, the summation of length L1, length L2, length L3, length L4 are at least more than 22d.
Further speaking, several single thread spiral shell ribs 2 are additionally provided on feeding section, compression section and wave homogenizing zone.
Compared with prior art, it has the advantage that
Etc. one, hold the invigoration effect of the reversed wave band slot of rheology: when single screw rod rotates, the material full of reversed wave band slot can
To be freely slid onto trough 3,6 positions, wave crest 4,5 and trough 3,6 are in cyclically-varying, and material is in wave crest from wave crest 4,5 positions
4, pressure is established in 5 positions, releases stress in trough 3,6 positions, and there are two alternate position, Ke Yixiang in a screw channel
Mutually alternately, it realizes and is merged to the greatest extent between material material, the pressure that wave crest 4,5 is set up can be discharged into the same band
Trough 3,6 also releasably arrives the trough 3,6 of another wave band of same screw channel, therefore is not in Strong shear, and the two of same screw channel
A wave band, i.e. first band A and second band B are in 180 degree phase difference, mechanical periodicity.
Etc. two, hold rheology screw rod:
1) hold rheology without compression etc.: keeping adjacent flight channel volume almost the same or close, so that the melt pressure of each screw channel
Power be also able to maintain it is almost the same, avoid melt pressure mutation lead to material Strong shear, change material performance；
2) by the local groove depth-Bao Bianhua in slot, lateral flow and overturning in melt tank low sheraing equipressure rheology: are realized
Mixing, breaks up laminar flow, avoids high shear, causes draft flowing deformation effect, material is promoted sufficiently to merge；Meanwhile thennal conduction enhancement is molten
Melt, inhibit Strong shear, accelerates material plasticizing；
3) principle of low sheraing equipressure rheology, melt pressure changes by internal volume in screw channel, automatic pressure regulation, no
It will appear localised high shear, plasticizing process made to become much smoother, the maximized thermal energy provided using machine and mechanical energy are reached
The purpose that energy consumption reduces；
4) hold the combination of rheology+low sheraing equipressure rheology without compression etc., so that this injection screw adaptation range expands, especially
When being macromolecule resin+inorganic filler, the primary characteristic of inorganic matter is protected well.
Three, the screw rod is to increase the twice wave band of 180 degree phase difference, i.e. first band A and second in single thread screw channel
Wave band B, first band A are identical with eccentricity S1, S2 of second band B, and eccentric direction is on the contrary, in adjacent screw channel in the period point
Cloth, same diameter screw, eccentricity S1, S2 is bigger, and power consumption is bigger, and eccentricity S1, S2 is smaller, and plasticizing quality is inadequate, reaches
Less than the structure screw rod effect, therefore suggest that eccentricity S1, S2 is 0.06d-0.03d；When single screw rod rotates, in a screw channel
Volume is although constant, but in a wave band slot, and material, periodically from becoming smaller greatly, then is changed from small to big with the phase difference of 180 degree,
Another wave band slot same principle, meanwhile, in a thread groove, the material of two wave band slots can mutually blend, and realize energy
Amount, pressure are complementary, and material tensile deformation in plasticizing transmission process is strengthened.
Because this injection screw have These characteristics, therefore should injection screw can processing macromolecule resin range it is enterprising
Row defines, which can be adapted for all high score resins and its additive, including inorganic filler.
The injection screw of above structure is applied on polymer plastic material injection forming machine, the plastic-injection moulding machine is at least
Including rubber melting cylinder 12 and lower hopper 13, wherein injection screw is rotatably arranged in rubber melting cylinder 12, and lower hopper 13 is located at feeding section
Top and with rubber melting cylinder 12 be interconnected；The inner wall of the wave crest 4,5 and rubber melting cylinder 12 forms certain spacing H4, trough
3,6 certain spacing H5 is formed with the inner wall of rubber melting cylinder 12.
Its working principles are as follows:
Material enters feeding section region from lower hopper 13, and material is transported to compression section region from feeding section, in compression section area
At domain, material is in elastomeric state, and both semi-molten state, was suitably compressed, and promotes material plasticizing, and the material being plasticized on a small quantity enters
Wave homogenizing zone region, in the area, material is adequately plasticized, and material can be along the rich connection of first band A to being pushed forward
Send, can also be pushed forward along the rich connection of second band B, at the same at the wave crest of second band B 4 pressure to a certain extent when,
Pressure can be discharged at the trough 3 of first band A or the 6 of second band B, be also same feelings at the wave crest 5 of first band A
Condition, pressure can be discharged at the trough 3 of first band A or the 6 of second band B, and such material can be realized inside screw channel
It rubs up to greatest extent, is that material is uniform, and reduces melt pressure, by the process in several periods, material is obtained sufficiently
Plasticizing.
The screw rod has the appearance of wave crest 4,5, increases material and 12 inner wall touch opportunity of rubber melting cylinder, can make full use of molten
Generate heat the thermal energy of circle outside packing element 12, thus the injection screw groove depth of this structure can than conventional injection screw rod groove depth 20-40%, therefore
The effective raising efficiency of energy, reduces energy consumption.
(screw speed presses 60rpm, material compared with the shear rate of the injection screw of the injection screw and traditional structure of this structure
Expect PS, viscosities il=200Pas): the result shows that, the injection screw shear rate of this structure reduces obvious.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of this field
Personnel should be recognized that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this hairs
Bright principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variations
It all fall within the protetion scope of the claimed invention with improvement.The claimed scope of the invention is by appended claims and its waits
Jljl is defined.
Meanwhile the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, it should not be understood as to this
The limitation of patent；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
Moreover, in the attached drawing of the embodiment of the present invention, the same or similar label correspond to the same or similar components；In this hair
In bright description, it is to be understood that if having term " on ", "lower", "left", "right", "vertical", "horizontal", " transverse direction ", " indulging
To ", "top", "bottom", "inner", the instructions such as "outside" orientation or positional relationship be based on orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only for illustration, no
It can be understood as a limitation of this patent.
Claims (10)
1. a kind of injection screw, including threaded portion interconnected and mixing elements (1), threaded portion is equipped with external screw thread,
It is characterized by: threaded portion is disposed with feeding section, compression section and wave homogenizing zone along the external screw thread hand of spiral；Described
At least six waves are provided on wave homogenizing zone, per pass wave is respectively by the first band (A) of 180 degree phase difference and the second wave
Section (B) is constituted, and first band (A) and/or second band (B) are set for the eccentric and respectively by the trough along screw rod circumference uniform distribution
(3,6) and wave crest (4,5) composition.
2. injection screw according to claim 1, it is characterised in that: deviate note in the center (10) of the first band (A)
Penetrating the center (9) of screw rod and its eccentricity is S1, the center (8) of second band (B) deviate the center (9) of injection screw and its
Eccentricity is S2, and the eccentric direction of first band (A) and the eccentric direction of second band (B) are on the contrary, eccentricity S1 and eccentricity
S2 is identical and is 0.06d-0.03d；Wherein, d is the outer diameter of injection screw.
3. injection screw according to claim 2, it is characterised in that: the feeding section has certain length L1, the length
It spends L1 and is greater than 8d.
4. injection screw according to claim 3, it is characterised in that: the compression section has certain length L2, the length
It spends L2 length and is greater than 3d-5d.
5. injection screw according to claim 4, it is characterised in that: the compression ratio of the compression section is less than 1.8；Wherein,
Compression ratio be feeding section screw channel (11) depth and compression section at the end of screw channel (7) depth ratio.
6. injection screw according to claim 5, it is characterised in that: the wave homogenizing zone has certain length L3,
Length L3 is greater than 7d.
7. injection screw according to claim 6, it is characterised in that: the mixing elements (1) have certain length L4,
And it is made of thread segment part interconnected and mixing part part.
8. injection screw according to claim 7, it is characterised in that: the length L1, length L2, length L3, length L4
Summation at least more than 22d.
9. injection screw according to claim 1-8, it is characterised in that: the feeding section, compression section and wave
Several single thread spiral shell ribs (2) are additionally provided on homogenizing zone.
10. a kind of plastic-injection moulding machine, which is characterized in that including the described in any item injection screws of claim 1-9；It is described
Plastic-injection moulding machine include at least rubber melting cylinder (12) and lower hopper (13), wherein injection screw is rotatably arranged on rubber melting cylinder
(12) in, lower hopper (13) is located at the top of feeding section and is interconnected with rubber melting cylinder (12)；The wave crest (4,5) and molten
The inner wall of packing element (12) forms certain spacing H4, and trough (3,6) and the inner wall of rubber melting cylinder (12) form certain spacing H5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910472881.XA CN110103431A (en) | 2019-05-31 | 2019-05-31 | A kind of plastic-injection moulding machine and its injection screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910472881.XA CN110103431A (en) | 2019-05-31 | 2019-05-31 | A kind of plastic-injection moulding machine and its injection screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110103431A true CN110103431A (en) | 2019-08-09 |
Family
ID=67493476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910472881.XA Pending CN110103431A (en) | 2019-05-31 | 2019-05-31 | A kind of plastic-injection moulding machine and its injection screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110103431A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225400U (en) * | 2011-03-07 | 2012-05-23 | 广州一道注塑机械有限公司 | High-rotation-speed injection screw rod |
| CN203726779U (en) * | 2013-12-25 | 2014-07-23 | 佛山市顺德区震德塑料机械有限公司 | Corrugated screw rod for injection molding machine |
| CN204249278U (en) * | 2014-10-30 | 2015-04-08 | 中山力劲机械有限公司 | A kind of injection machine injection screw structure |
| WO2016112777A1 (en) * | 2015-01-14 | 2016-07-21 | 李建钢 | Extrusion apparatus |
| CN106142486A (en) * | 2015-04-10 | 2016-11-23 | 震雄机械（深圳）有限公司 | Jet forming machine and injection screw thereof |
| CN210257129U (en) * | 2019-05-31 | 2020-04-07 | 广东伊之密精密注压科技有限公司 | Plastic injection molding machine and injection screw thereof |
-
2019
- 2019-05-31 CN CN201910472881.XA patent/CN110103431A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225400U (en) * | 2011-03-07 | 2012-05-23 | 广州一道注塑机械有限公司 | High-rotation-speed injection screw rod |
| CN203726779U (en) * | 2013-12-25 | 2014-07-23 | 佛山市顺德区震德塑料机械有限公司 | Corrugated screw rod for injection molding machine |
| CN204249278U (en) * | 2014-10-30 | 2015-04-08 | 中山力劲机械有限公司 | A kind of injection machine injection screw structure |
| WO2016112777A1 (en) * | 2015-01-14 | 2016-07-21 | 李建钢 | Extrusion apparatus |
| CN106142486A (en) * | 2015-04-10 | 2016-11-23 | 震雄机械（深圳）有限公司 | Jet forming machine and injection screw thereof |
| CN210257129U (en) * | 2019-05-31 | 2020-04-07 | 广东伊之密精密注压科技有限公司 | Plastic injection molding machine and injection screw thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103056979B (en) | Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw | |
| CN104647721A (en) | Extrusion device | |
| CN106142486B (en) | Jet forming machine and its injection screw | |
| CN110103431A (en) | A kind of plastic-injection moulding machine and its injection screw | |
| CN203031883U (en) | Mixed screw of injection molding machine | |
| CN210257129U (en) | Plastic injection molding machine and injection screw thereof | |
| CN213564269U (en) | Special extrusion screw for PP melt-blown fabric | |
| CN106994773B (en) | Continous way EPE physical blowing plate-extruding machine | |
| CN204604823U (en) | Jet forming machine and melten gel screw rod thereof | |
| CN102205609A (en) | Micro-foaming injection-molded screw | |
| CN212528586U (en) | Screw rod without compression ratio | |
| CN204566599U (en) | Jet forming machine and injection screw thereof | |
| CN211763379U (en) | Plasticizing rotor based on periodic change of elliptical cross section and lift angle | |
| CN1644352A (en) | Conic four-piece reciprocating pin scewrod extruder | |
| CN208946647U (en) | A kind of extruder | |
| CN207290864U (en) | A kind of combination type ultralong single screw rod | |
| JPH0261898B2 (en) | ||
| CN208164294U (en) | A kind of degradable film bolt special | |
| CN206357466U (en) | A kind of five screw extruders | |
| CN216182652U (en) | Novel high-speed high-efficient screw rod mixing head structure | |
| CN208993039U (en) | A kind of novel extrusion machine screw rod | |
| CN2437476Y (en) | Pulsating screw with helical worked composite member | |
| CN108790104A (en) | Forward and reverse spiral combines pulsation plasticizing screw rod | |
| CN209257429U (en) | The screw rod that a kind of storing is efficient, mixed is strong | |
| CN213166787U (en) | Double-screw extruder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |