CN207825405U - A kind of injection moulding apparatus of natural-fiber composite material - Google Patents
A kind of injection moulding apparatus of natural-fiber composite material Download PDFInfo
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- CN207825405U CN207825405U CN201820056360.7U CN201820056360U CN207825405U CN 207825405 U CN207825405 U CN 207825405U CN 201820056360 U CN201820056360 U CN 201820056360U CN 207825405 U CN207825405 U CN 207825405U
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Abstract
The utility model discloses a kind of injection moulding apparatus 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 utility model 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 excessively, meet the rigors needed for the injection molding production of highly filled natural fiber biological composite material, final product quality is high, injection efficiency is high, to realize and break through highly filled natural fiber biological composite material injection molding production technology bottleneck and solve safety in production problem.
Description
【Technical field】
The utility model belongs to technical field of mold, and in particular to a kind of injection moulding apparatus of natural-fiber composite material.
【Background technology】
Natural fiber composite reinforcing material is the renewable cellulose reinforcing material of a height, the low, soundproof effect with density
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 molding production are made
The technical process made will generate far-reaching influence in related application field.Economical and practical natural-fiber composite material injection molding
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 is widely used, 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 high proportion enhancement 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 satisfy 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 cannot be satisfied requirement；
2, the temperature that is unable to of melted material is 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 molding production and serious safety in production hidden danger.
The utility model is namely based on problem above generation.
【Utility model content】
The purpose of this utility model is in view of the deficiencies of the prior art, to propose a kind of injection molding dress of natural-fiber composite material
It sets, final product quality is high, and injection efficiency is high.
In order to solve the above technical problems, the utility model provides the following technical solutions：A kind of natural-fiber composite material
Injection moulding apparatus, which is characterized in that include plasticizing charging barrel, the end set of the plasticizing charging barrel has nozzle, the plasticizing charging barrel
Interior to be equipped with rotatable screw body, the end set of the screw body has screw head；The draw ratio L/D of the screw body
Ratio range be 18~23, the ratio range of the compression ratio of the screw body is 1.5~1.95.
A kind of injection moulding apparatus of natural-fiber composite material as described above, which is characterized in that further include have 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 moulding apparatus of natural-fiber composite material as described above, which is characterized in that the nozzle bore of the nozzle
Diameter a ranging from 5mm~25mm.
A kind of injection moulding apparatus of natural-fiber composite material as described above, which is characterized in that the end of the nozzle is
Spherical surface, and ranging from 25mm~35mm of spherical radius r.
Compared with prior art, the injection moulding apparatus of a kind of natural-fiber composite material of the utility model, have has as follows
Beneficial effect：
The ratio range of the draw ratio L/D of the screw body of the utility model is 18~23, the compression ratio of screw body
Ratio range is 1.5~1.95, and this design can control effectively to the shear heat of material when screw rod rotates, and is ensured long fine
Dimension part is not sheared excessively, and the rigors needed for the injection molding production of highly filled natural fiber biological composite material, finished product are met
Quality is high, and injection efficiency is high, to realize and break through highly filled natural fiber biological composite material injection molding production technology bottleneck and
Solve safety in production problem.
【Description of the drawings】
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the configuration diagram of the utility model；
Fig. 2 is the enlarged drawing at M in Fig. 1；
Fig. 3 is the structure chart of the utility model screw body；
Description of the drawings：1, plasticizing charging barrel；2, nozzle；3, screw body；4, screw head；5, check ring；6, thrust ring；L、
Screw 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 implementation mode】
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
As shown in Figure 1 to Figure 3, in the present embodiment, a kind of injection moulding apparatus of natural-fiber composite material includes plasticizing
The end set of barrel 1, the plasticizing charging barrel 1 has nozzle 2, and rotatable screw body 3, institute are equipped in the plasticizing charging barrel 1
The end set for stating screw body 3 has screw head 4；The ratio range of the draw ratio L/D of the screw body 3 is 18~23, institute
The ratio range for stating the compression ratio of screw body 3 is 1.5~1.95.
Length of the threaded part of length, that is, screw head of screw body to hopper center line section；Screw body it is straight
Diameter is D.
Compression ratio is feed zone L1 the first thread groove volumes and the last one thread groove volume of homogenizing zone L3 of screw body
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, further include having check ring 5 and thrust ring 6, check ring 5 and thrust ring
6 as between screw head 4 and screw body 3, and 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, and check ring was pushed up by material and arrived front this when, 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 channel, therefore play the role of sealing.
As shown in Figure 1 to Figure 3, in the present embodiment, the ranging from 5mm of the diameter a of the nozzle bore of the nozzle 2~
25mm.The remote super design size that injection moulding apparatus is commonly used, could meet highly filled natural fiber biological composite wood in this way
Material injection molding 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 spherical radius r is ranging from
25mm~35mm.
Claims (4)
1. a kind of injection moulding apparatus 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 (3) is 18~23, described
The ratio range of the compression ratio of screw body (3) is 1.5~1.95.
2. a kind of injection moulding apparatus of natural-fiber composite material according to claim 1, which is characterized in that further include having 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).
3. a kind of injection moulding apparatus of natural-fiber composite material according to claim 1, which is characterized in that the nozzle
(2) ranging from 5mm~25mm of the diameter a of nozzle bore.
4. a kind of injection moulding apparatus of natural-fiber composite material according to claim 3, which is characterized in that the nozzle
(2) end is spherical surface, and ranging from 25mm~35mm of spherical radius r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056360.7U CN207825405U (en) | 2018-01-12 | 2018-01-12 | A kind of injection moulding apparatus of natural-fiber composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056360.7U CN207825405U (en) | 2018-01-12 | 2018-01-12 | A kind of injection moulding apparatus of natural-fiber composite material |
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| Publication Number | Publication Date |
|---|---|
| CN207825405U true CN207825405U (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820056360.7U Active CN207825405U (en) | 2018-01-12 | 2018-01-12 | A kind of injection moulding apparatus of natural-fiber composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081561A (en) * | 2018-01-12 | 2018-05-29 | 广东泰安模塑科技股份有限公司 | A kind of injection structure of natural-fiber composite material |
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2018
- 2018-01-12 CN CN201820056360.7U patent/CN207825405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081561A (en) * | 2018-01-12 | 2018-05-29 | 广东泰安模塑科技股份有限公司 | A kind of injection structure of natural-fiber composite material |
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