CN108081561A - A kind of injection structure of natural-fiber composite material - Google Patents
A kind of injection structure of natural-fiber composite material Download PDFInfo
- Publication number
- CN108081561A CN108081561A CN201810028897.7A CN201810028897A CN108081561A CN 108081561 A CN108081561 A CN 108081561A CN 201810028897 A CN201810028897 A CN 201810028897A CN 108081561 A CN108081561 A CN 108081561A
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- China
- Prior art keywords
- screw body
- composite material
- natural
- screw
- ratio
- 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.)
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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
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of injection structures of natural-fiber composite material, include plasticizing charging barrel, and the end set of the plasticizing charging barrel has nozzle, is equipped with rotatable screw body in the plasticizing charging barrel, the end set of the screw body has screw head；The ratio range of the draw ratio L/D of the screw body is 18~23, and the ratio range of the compression ratio of the screw body is 1.5~1.95.The ratio range of the draw ratio L/D of the screw body of the present invention is 18~23, the ratio range of the compression ratio of screw body is 1.5~1.95, this design can control effectively to the shear heat of material when screw rod rotates, ensure that long fibre part is not sheared too, meet the rigors needed for the injection production of highly filled natural fiber biological composite material, final product quality is high, injection efficiency is high, so as to fulfill and break through highly filled natural fiber biological composite material injection production technology bottleneck and solve safety in production problem.
Description
【Technical field】
The invention belongs to technical field of mold, and in particular to a kind of injection structure of natural-fiber composite material.
【Background technology】
Natural fiber composite reinforcing material is the renewable cellulose reinforcing material of a height, has that density is low, soundproof effect
Good, good mechanical property, specific strength and specific modulus are high, belong to renewable resource, be can natural degradation ep-type material；It is filled out using height
Natural fiber composite reinforcing material is filled, the use of oil can be reduced, the destruction of forest environment can be reduced；As countries in the world are in ring
Requirement in terms of guarantor steps up, and the product and green of this polypropylene-base highly filled natural fibrous composite injection production are made
The technical process made will generate far-reaching influence in related application field.Economical and practical natural-fiber composite material injection
The production technology of the product of production also has the characteristics that low energy consumption, low VOC emission, can accomplish to be molded manufacturing process and note
Molding product it is environmentally protective.
This polypropylene-base highly filled natural fibrous composite widely uses, and can reduce the use of oil, completely may be used
Recycling or the processing that can burn, reduce the destruction of forest.But due to this polypropylene-base highly filled natural fiber composite
The problem of paper fiber fiber content is 40% to 50% in material, the poor fluidity of material injection production is than more prominent.
This polypropylene-base highly filled natural fibrous composite be molded produce when, it is also relatively more prominent the problem of poor fluidity
Go out, injection speed has to soon, so as to improve the floating fine effect of marble-like existing for product table, particularly with product size
In the product of 5mm to 20mm, this phenomenon can protrude more big and heavy wall；Since which are added enhancement at high proportion is naturally fine
Dimension, the temperature of injecting unit and plasticizing apparatus to the injection molding machine and shearing rate of colloidal sol must accurately analyze and management and control, to note
The injecting unit and plasticizing apparatus system of molding machine must are fulfilled for following three conditions：
1, injecting products material requested must be rapidly injected in 3S in plastic mould in injecting unit and plasticizing apparatus, no
It is then susceptible to lack of fill and product surface and seriously floats fine phenomenon, product function and appearance can not meet requirement；
2, melted material is unable to temperature less than 190 DEG C, and too low melting temperature can cause the mobility of material to reduce, and go out
Now with 1 in same bad phenomenon；
3, not above 210 DEG C, excessively high temperature can make in material the material temperature in injecting unit and plasticizing apparatus
Paper fiber cellulose fiber generates spontaneous combustion, leads to not injection production and serious safety in production hidden danger.
The present invention is namely based on problem above generation.
【The content of the invention】
The purpose of the present invention is in view of the deficiencies of the prior art, proposing a kind of injection structure of natural-fiber composite material,
Final product quality is high, and injection efficiency is high.
In order to solve the above technical problems, the present invention provides following technical solution：A kind of injection of natural-fiber composite material
Structure, which is characterized in that include plasticizing charging barrel, the end set of the plasticizing charging barrel has nozzle, set in the plasticizing charging barrel
There is rotatable screw body, the end set of the screw body has screw head；The ratio of the draw ratio L/D of the screw body
It is 18~23 to be worth scope, and the ratio range of the compression ratio of the screw body is 1.5~1.95.
A kind of injection structure of natural-fiber composite material as described above, which is characterized in that further included check ring and
As between screw head and screw body, the thrust ring is fixedly connected with screw body for thrust ring, check ring and thrust ring,
Check ring is between screw head and thrust ring.
A kind of injection structure of natural-fiber composite material as described above, which is characterized in that the nozzle bore of the nozzle
Diameter a scope be 5mm~25mm.
A kind of injection structure of natural-fiber composite material as described above, which is characterized in that the end of the nozzle is
Spherical surface, and the scope of spherical radius r is 25mm~35mm.
Compared with prior art, the injection structure of a kind of natural-fiber composite material of the invention has following beneficial to effect
Fruit：
The ratio range of the draw ratio L/D of the screw body of the present invention is 18~23, the ratio of the compression ratio of screw body
Scope is 1.5~1.95, and this design can control effectively to the shear heat of material when screw rod rotates, and ensures long fibre portion
Divide and do not sheared too, meet the rigors needed for the injection production of highly filled natural fiber biological composite material, final product quality
Height, injection efficiency are high, so as to fulfill and break through highly filled natural fiber biological composite material injection production technology bottleneck and solution
Safety in production problem.
【Description of the drawings】
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the configuration diagram of the present invention；
Fig. 2 is the enlarged drawing at M in Fig. 1；
Fig. 3 is the structure chart of screw body of the present invention；
Description of the drawings：1st, plasticizing charging barrel；2nd, nozzle；3rd, screw body；4th, screw head；5th, check ring；6th, thrust ring；L, spiral shell
Bar body length；D, screw body diameter；L1, feed zone；L2, compression section；L3, homogenizing zone；H1, feed zone spiral groove depth；h3、
Homogenizing zone spiral groove depth.
【Specific embodiment】
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
As shown in Figure 1 to Figure 3, in the present embodiment, a kind of injection structure of natural-fiber composite material, includes plasticizing
Barrel 1, the end set of the plasticizing charging barrel 1 have nozzle 2, rotatable screw body 3, institute are equipped in the plasticizing charging barrel 1
Stating the end set of screw body 3 has screw head 4；The ratio range of the draw ratio L/D of the screw body 1 is 18~23, institute
The ratio range for stating the compression ratio of screw body 1 is 1.5~1.95.
The threaded part of length, that is, screw head of screw body is to the length of hopper center line section；Screw body it is straight
Footpath is D.
Compression ratio is feed zone L1 the first thread groove volumes of screw body and the last one thread groove volume of homogenizing zone L3
Ratio, in equidistant gradual change shape screw rod, also be understood as first screw thread groove depth h1 of feed zone L1 and homogenizing zone L3 last
The ratio of a screw thread groove depth h3, i.e. compression ratio=h1/h3.The compression ratio size of screw rod, the technique control to extrusion plasticizing raw material
Condition processed has larger impact.When squeezing out different resins, the compression ratio of screw rod should be selected according to the physical property of different plastics.
As shown in Figure 1 to Figure 3, in the present embodiment, check ring 5 and thrust ring 6, check ring 5 and thrust ring 6 have been further included
As between screw head 4 and screw body 3, the thrust ring 6 is fixedly connected with screw rod 3, check ring 5 be located at screw head 4 with
Between thrust ring 6.The effect of check ring is to prevent melt adverse current；When colloidal sol, screw body rotation, material passes through screw rod sheet
The screw thread of body is pressed against front end, this when, check ring was pushed up by material to front, and for check ring with just being had the gap between thrust ring, material can
Along gap, to again pass through screw head, then flow in front of barrel.When injection, screw body forward, pushes away check ring and pushes away
It will be locked between power ring, enclose passage, therefore play the role of sealing.
As shown in Figure 1 to Figure 3, in the present embodiment, the scope of the diameter a of the nozzle bore of the nozzle 2 for 5mm~
25mm.The remote super design size that injection structure is commonly used, could so meet highly filled natural fiber biological composite wood
Material injection production is the requirement to injection speed.
As shown in Figure 1 to Figure 3, in the present embodiment, the end of the nozzle 2 is spherical surface, and the scope of spherical radius r is
25mm~35mm.
Claims (4)
1. a kind of injection structure of natural-fiber composite material, which is characterized in that include plasticizing charging barrel (1), the plasticizing material
The end set of cylinder (1) has nozzle (2), and rotatable screw body (3), the screw rod sheet are equipped in the plasticizing charging barrel (1)
The end set of body (3) has screw head (4)；The ratio range of the draw ratio L/D of the screw body (1) is 18~23, described
The ratio range of the compression ratio of screw body (1) is 1.5~1.95.
2. the injection structure of a kind of natural-fiber composite material according to claim 1, which is characterized in that further included only
Inverse ring (5) and thrust ring (6), check ring (5) and thrust ring (6) are described as between screw head (4) and screw body (3)
Thrust ring (6) is fixedly connected with screw body (3), and check ring (5) is located between screw head (4) and thrust ring (6).
A kind of 3. injection structure of natural-fiber composite material according to claim 1, which is characterized in that the nozzle
(2) scope of the diameter a of nozzle bore is 5mm~25mm.
A kind of 4. injection structure of natural-fiber composite material according to claim 3, which is characterized in that the nozzle
(2) end is spherical surface, and the scope of spherical radius r is 25mm~35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028897.7A CN108081561A (en) | 2018-01-12 | 2018-01-12 | A kind of injection structure of natural-fiber composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028897.7A CN108081561A (en) | 2018-01-12 | 2018-01-12 | A kind of injection structure of natural-fiber composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108081561A true CN108081561A (en) | 2018-05-29 |
Family
ID=62182932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810028897.7A Pending CN108081561A (en) | 2018-01-12 | 2018-01-12 | A kind of injection structure of natural-fiber composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108081561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109571873A (en) * | 2018-12-13 | 2019-04-05 | 广东泰安模塑科技股份有限公司 | A kind of injection molding and the integrated mould structure of intramode coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708645A (en) * | 2009-12-14 | 2010-05-19 | 浙江俊尔新材料有限公司 | Injection molding machine for forming long fiber reinforced plastics |
| JP2016060188A (en) * | 2014-09-22 | 2016-04-25 | 株式会社名機製作所 | Molten material supply device |
| CN207825405U (en) * | 2018-01-12 | 2018-09-07 | 广东泰安模塑科技股份有限公司 | A kind of injection moulding apparatus of natural-fiber composite material |
-
2018
- 2018-01-12 CN CN201810028897.7A patent/CN108081561A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708645A (en) * | 2009-12-14 | 2010-05-19 | 浙江俊尔新材料有限公司 | Injection molding machine for forming long fiber reinforced plastics |
| JP2016060188A (en) * | 2014-09-22 | 2016-04-25 | 株式会社名機製作所 | Molten material supply device |
| CN207825405U (en) * | 2018-01-12 | 2018-09-07 | 广东泰安模塑科技股份有限公司 | A kind of injection moulding apparatus of natural-fiber composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109571873A (en) * | 2018-12-13 | 2019-04-05 | 广东泰安模塑科技股份有限公司 | A kind of injection molding and the integrated mould structure of intramode coating |
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Application publication date: 20180529 |
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| RJ01 | Rejection of invention patent application after publication |