CN202186035U - Improved three-layer plastic coextrusion die head with single storage cylinder - Google Patents
Improved three-layer plastic coextrusion die head with single storage cylinder Download PDFInfo
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- CN202186035U CN202186035U CN2011202965491U CN201120296549U CN202186035U CN 202186035 U CN202186035 U CN 202186035U CN 2011202965491 U CN2011202965491 U CN 2011202965491U CN 201120296549 U CN201120296549 U CN 201120296549U CN 202186035 U CN202186035 U CN 202186035U
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Abstract
The utility model discloses an improved three-layer plastic coextrusion die head with a single storage cylinder, comprising a thickness adjusting die body, an injection adjusting die body, an injection storage die body and a moulding die opening which are orderly overlapped, further comprising a core lifting rod, wherein the injection storage die body comprises an inner layer material inlet, an inner layer material runner, a middle layer material inlet, a middle layer material runner, an outer layer material inlet, an outer layer material runner and a middle material refinder; materials are fed through three material inlets simultaneously when the three-layer plastic coextrusion die head works; the outer layer material, the middle layer material and the inner layer material enter into a storage cavity of the injection storage die body through corresponding material runners so as to be mixed, respectively, and then the three layers of materials are simultaneously extruded and moulded through the moulding die opening and moulded once; each plastic layer is tightly attached and the plastic is firm without leakage. The moulding die opening can be adjusted by the thickness adjusting die body so as to adjust the thickness of the moulded plastic; the middle layer material refinder can equalize the thickness of the middle material, and three layers of materials are tightly combined after being extruded and moulded so as to prolong the service life of the plastic container.
Description
Technical field
The utility model relates to a kind of plastic molding machinery, relates in particular to a kind of co-extrusion die head of blow moulding machine of moulding three-layer plastic container.
Background technology
Along with the progress of science and technology, people are increasingly high to the portability requirement of the security of automobile, such as automotive oil tank, and heaviness, perishable, the heavy iron sheet fuel tank of quality can not satisfy people's requirement, is eliminated gradually.Corrosion-resistant, non-leakage, light weight, the plastic fuel tank of antistatic can obtain people's generally approval.
The plastic fuel tank that conventional method is made, product thickness is inhomogeneous, and quality is unstable; And be corroded easily, easy to leak, in conjunction with the growth requirement and the requirement of actual application of domestic market, can plastic fuel tank be manufactured three layers; Internal layer is antistatic; Skin is the uvioresistant layer, and the intermediate layer is a polyethylene from high pressure process, but traditional middle control make-up machine generally can only the production single-layer products.Minority can be produced the make-up machine of three-layer plastic container, and structure is all very complicated, can not regulate the wall thickness of the plastic containers of moulding; Can only produce the plastic containers of single thickness, the wall thickness of plastic container of production is inhomogeneous, and layering is unclear; For the three-layer plastic container; If middle that layered material base is inhomogeneous, internal layer material base and outer material base can't with the extrusion modling well of middle level material base, and if wall unevenness even service life that can shorten plastic containers.
The utility model content
The utility model technical problem to be solved provides and a kind ofly can be adjusted to plastic container wall thickness and the uniform improved single accumulator formula three-layer plastic co-extrusion die head of wall thickness.
For solving the problems of the technologies described above, the technical scheme of the utility model is: improved single accumulator formula three-layer plastic co-extrusion die head comprises the thick die body of accent stacked successively and that be fixed together, material feeding adjusting die body, material feeding storing die body and moulding die orifice; Also comprise the core bar of carrying that runs through the thick die body of said accent, said material feeding adjusting die body and said material feeding storing die body, the said bottom of carrying core bar is connected with said moulding die orifice;
Said material feeding storing die body comprises internal layer material base inlet, middle level material base inlet and outer material base inlet; With the corresponding internal layer material base runner that the internal layer material base is imported to said moulding die orifice that is provided with of said internal layer material base inlet; With corresponding being provided with of said middle level material base inlet the middle level material base is imported to the middle level material base runner in the said material feeding storing die body; Be provided with middle level material base material-homogenating device between said middle level material base runner and the said moulding die orifice, with the corresponding outer material base runner that outer material base is imported to said moulding die orifice that is provided with of said outer material base inlet.
As a kind of optimized technical scheme, the thick die body of said accent comprises transfers thick cylinder, is equipped with in the thick cylinder of said accent and transfers thick piston, the thick piston of said accent to be fixedly connected with the thick piston rod of accent, and the thick piston rod of said accent is fixedly connected with the said core bar of carrying.
As a kind of optimized technical scheme; Said material feeding is regulated die body and is comprised the material feeding oil cylinder; In the said material feeding oil cylinder material feeding piston is installed, said material feeding piston is fixedly connected with the material feeding piston rod, and the bottom of said material feeding piston rod is installed with; Said bottom of taking over a business is installed with push rod, and said push rod lower end is fixedly connected on said material feeding storing die body.
As a kind of optimized technical scheme; Said material feeding storing die body comprises the material cylinder; Be provided with internal layer plug and plug junctor in the said material cylinder; Said internal layer mandrel outer is equipped with neck bush, is provided with the internal layer material base runner that is communicated with said internal layer material base inlet and said material cylinder between said neck bush and the said internal layer plug; Said neck bush is equipped with external bushing outward, is provided with between said neck bush and the said external bushing to be communicated with the enter the mouth middle level material base runner of said material cylinder of said middle level material base; Said external bushing is equipped with the material plug that is fixedly connected with said push rod outward, and said material is equipped with the material cylinder sleeve beyond the Great Wall, is provided with the outer material base runner that is communicated with said outer material base inlet and said material cylinder between the wall of said material cylinder sleeve and said material cylinder.
As a kind of optimized technical scheme, the double said middle level material base material-homogenating device of doing of said material plug, said middle level material base material-homogenating device comprise and are arranged on said material refining runner beyond the Great Wall that the wall of said refining runner is provided with the protruding or helical form refining groove of helical form refining.
As a kind of optimized technical scheme, said moulding die orifice comprises with said carries the core that core bar is fixedly connected, and said core is provided with the mouth mould that matches and be fixedly connected with said material casing wall outward.
Owing to adopted technique scheme, improved single accumulator formula three-layer plastic co-extrusion die head comprises the thick die body of accent stacked successively and that be fixed together, material feeding adjusting die body, material feeding storing die body and moulding die orifice; Also comprise the core bar of carrying that runs through the thick die body of said accent, said material feeding adjusting die body and said material feeding storing die body, the said bottom of carrying core bar is connected with said moulding die orifice; Said material feeding storing die body comprises internal layer material base inlet, middle level material base inlet and outer material base inlet; With the corresponding internal layer material base runner that the internal layer material base is imported to said moulding die orifice that is provided with of said internal layer material base inlet; With corresponding being provided with of said middle level material base inlet the middle level material base is imported to the middle level material base runner in the said material feeding storing die body; Be provided with middle level material base material-homogenating device between said middle level material base runner and the said moulding die orifice, with the corresponding outer material base runner that outer material base is imported to said moulding die orifice that is provided with of said outer material base inlet; During work; Three material base inlet charging simultaneously bases; Outward, in, the internal layer material base respectively the material base runner through correspondence enter in the storage cavity of material feeding storing die body and converge, three layered material bases are simultaneously through the extrusion modling of moulding die orifice, one-shot forming then; Fit tightly between each layer plastics, solid non-leakage; Utilize and transfer thick die body to regulate, and then be adjusted to the thickness of plastic the moulding die orifice; Material base thickness was even in the middle of middle level material base material-homogenating device can make, and after the extrusion modling, three layered material bases are combined closely, and have prolonged the long service life of plastic containers.
Description of drawings
Accompanying drawing is the structural representation of the utility model embodiment;
Among the figure: 1-internal layer material base inlet; 2-middle level material base inlet; The outer material base inlet of 3-; 4-internal layer plug; 5-expects cylinder sleeve; The 6-connector; The 7-external bushing; 8-expects cylinder; The 9-neck bush; 10-plug junctor; 11-takes over a business; 12-carries core bar; 13-material feeding piston; 14-material feeding piston rod; 15-transfers thick piston; 16-transfers thick piston rod; The 17-pull bar; The 18-push rod; 19-expects plug; The 20-core; 21-mouth mould; 22-material cylinder flange; 23-refining runner; 24-oil cylinder flange.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, further set forth the utility model.In the detailed description below, some example embodiment of the utility model has only been described through the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under the situation of spirit that does not depart from the utility model and scope, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used to limit the protection domain of claim.
Shown in accompanying drawing, improved single accumulator formula three-layer plastic co-extrusion die head comprises the thick die body of accent stacked successively and that be fixed together, material feeding adjusting die body, material feeding storing die body and moulding die orifice; Also comprise run through that the thick die body of said accent, said material feeding regulate die body and said material feeding storing die body carry core bar 12, the said bottom of carrying core bar 12 is connected with said moulding die orifice; The thick die body of said accent comprises transfers thick cylinder, is equipped with in the thick cylinder of said accent to transfer thick piston 15, the thick piston 15 of said accent to be fixedly connected with the thick piston rod 16 of accent, and the thick piston rod 16 of said accent is fixedly connected with the said core bar 12 of carrying.Said material feeding is regulated die body and is comprised the material feeding oil cylinder; In the said material feeding oil cylinder material feeding piston 13 is installed, said material feeding piston 13 is fixedly connected with material feeding piston rod 14, and the bottom of said material feeding piston rod 14 is installed with 11; Saidly take over a business 11 bottom and be installed with push rod 18; In the present embodiment, be provided with three push rods 18, said push rod 18 lower ends are fixedly connected on said material feeding storing die body.
Said material feeding storing die body also comprises material cylinder 8; Said material cylinder 8 is provided with internal layer material base inlet 1, middle level material base inlet 2 and outer material base inlet 3; Be provided with internal layer plug 4 in the said material cylinder 8; Said internal layer plug 4 outer neck bush 9 and the plug junctors 10 of being equipped with from top to bottom; Be provided with the internal layer material base runner that is communicated with said internal layer material base inlet 1 and said material cylinder 8 between said neck bush 9 and the said internal layer plug 4, said plug junctor 10 is fixedly connected with said internal layer plug 4, and the external diameter of plug junctor 10 is greater than the external diameter of internal layer plug 4; The junction of internal layer plug 4 and plug junctor 10 is provided with the transition region that internal layer plug 4 outer radial plug junctors 10 gradually change, and is convenient to flow out the internal layer material base runner of internal layer material base between said neck bush 9 and said internal layer plug 4; Said neck bush 9 upper ends week external bushing 7 is installed laterally; Be provided with the middle level material base runner that is communicated with said middle level material base inlet 2 and said material cylinder 8 between said neck bush 9 and the said external bushing 7, be provided with middle level material base material-homogenating device between said middle level material base runner and the said moulding die orifice; The material plug 19 that is fixedly connected with said push rod 18 is installed in the said material cylinder 8; The said material plug 19 double said middle level material base material-homogenating devices of doing; Said middle level material base material-homogenating device comprises the refining runner 23 that is arranged on the said material plug 19; The inlet of said refining runner 23 is communicated with slit between the said neck bush 9 through material plug 19, along with the material base quantity in the material cylinder 8 increase, expects to fill in 19 and moves up; When material plug 19 arrives highest order; The inlet of said refining runner 23 docks with the outlet of said middle level material base runner, and the wall of said refining runner 23 is provided with the protruding or helical form refining groove of helical form refining, and the protruding perhaps helical form refining groove of these helical form refinings can make the middle level material base in material plug 19, flow out entering material cylinder 8 equably.The said material plug 19 outer material cylinder sleeves 5 that are equipped with are provided with the outer material base runner that is communicated with said outer material base inlet 3 and said material cylinder 8 between the wall of said material cylinder sleeve 5 and said material cylinder 8.Said moulding die orifice comprises and the said core 20 that core bar 12 is fixedly connected, the said core 20 outer mouth moulds 21 that match and be fixedly connected with said material cylinder 8 walls that are provided with carried.The top of said material cylinder 8, material cylinder sleeve 5, material plug 19 and external bushing 7 is provided with material cylinder flange 22; Pull bar 17 connects material cylinder flange 22 and oil cylinder flange 24; Pull bar 17 laterally arranges with push rod 18, and the bottom of material cylinder flange 22 is provided with to the annular connector 6 that extends below, and connector 6 is between material cylinder sleeve 5 and external bushing 7; Main each parts of fixed connection that play a part, push rod 18 run through Connection Block 22 and are fixedly connected on material plug 19 with connector 6, bottom.With transfer that thick piston rod 16 is fixedly connected carry core bar 12 to extending below; Passing said internal layer plug 4 directly is fixedly connected with the core 20 of moulding die orifice with said plug junctor 10; Regulate the gap length between core 20 and mouthful mould 21 so can directly carry core bar 12, thereby reach the purpose that is adjusted to plastic thickness through pulling.
Operation principle:
The plastics A of three kinds of different colours, B, C enter into material cylinder 8 through internal layer material base inlet 1, middle level material base inlet 2 and outer material base inlet 3 and with internal layer material base runner, middle level material base runner and the outer material base runner of the corresponding setting of above-mentioned blank inlet respectively.
The A plastics are through internal layer material base inlet 1; Pass in the internal layer material base runner that forms between material cylinder 8 walls, material cylinder sleeve 5, connector 6, external bushing 7, neck bush 9 arrival internal layer plugs 4 and the neck bush 9; The A plastics flow downward in internal layer material base runner; Arrive the exit of internal layer material base runner, i.e. the contact position of internal layer plug 4, plug junctor 10 and neck bush 9; When material plug 19 was in the bottom of material cylinder 8, the internal layer material base also will be in the slit flow pan feeding cylinder 8 between material plug 19 and the plug junctor 10;
The B plastics are through middle level material base inlet 2; Pass in the middle level material base runner that forms between material cylinder 8 walls, material cylinder sleeve 5, connector 6, external bushing 7 arrival external bushings 7 and the neck bush 9; The B plastics flow downward in the material base runner of middle level, arrive the exit of middle level material base runner, and the slit between punishment in advance plug 19 and said neck bush 9 enters in the refining runner 23 then; Through behind the refining; The uniform middle level of thickness material base enters in the material cylinder 8 through the outlet of refining runner 23, at this moment, and B plastics and A plastic bonding;
The C plastics pass material cylinder 8 walls and arrive in the outer material base runner that forms between material cylinder 8 walls and the material cylinder sleeve 5 through outer material base inlet 3, and the C plastics flow downward in runner, arrive outer material base runner exit place, and flowing downward along material cylinder 8 walls then gets in the material cylinder 8.
After A plastics, B plastics, C plastics fill up accumulator 8; Material feeding piston 13 and material plug 19 meeting the highest positions in the material feeding oil cylinder; Move downward through hydraulic action material feeding piston 13; Act on material feeding piston rod 14 and take over a business on 11, take over a business 11 and promote push rod 18 downward pot plungers 19, extrude the formation material base to the die orifice between plastics through port mould 21 and the core 20.Press in the process of material feeding at material plug 19; Transfer thick piston 15 meetings constantly through exchanging thick piston rod 16 application of forces; And then pulling carries core bar 12 and moves up and down and regulate the gap between core 20 and mouthful mould 21, and the purpose that realizes regulating material base thickness is made product through air blowing, pressurize, typing again.
In this technical scheme, can utilize a die head moulding three-layer plastic container, and can be as required, to the thick automatic control and adjustment of carrying out of moulding plastics wall of a container.Because three-layer plastic at last in the one-shot forming of a moulding die orifice, fits tightly between each layer of product plastics of producing like this, and is solid non-leakage.
What foregoing was described is improved single accumulator formula three-layer plastic co-extrusion die head; Variation as the present technique scheme; Also can be through increasing the mode of material base inlet and material base runner, should improved single accumulator formula three-layer plastic co-extrusion die head change four layers of plastic co-extrusion die head of single accumulator formula even multilayer more into.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. improved single accumulator formula three-layer plastic co-extrusion die head comprises the thick die body of accent stacked successively and that be fixed together, material feeding adjusting die body, material feeding storing die body and moulding die orifice; Also comprise the core bar of carrying that runs through the thick die body of said accent, said material feeding adjusting die body and said material feeding storing die body, the said bottom of carrying core bar is connected with said moulding die orifice; It is characterized in that:
Said material feeding storing die body comprises internal layer material base inlet, middle level material base inlet and outer material base inlet; With the corresponding internal layer material base runner that the internal layer material base is imported to said moulding die orifice that is provided with of said internal layer material base inlet; With corresponding being provided with of said middle level material base inlet the middle level material base is imported to the middle level material base runner in the said material feeding storing die body; Be provided with middle level material base material-homogenating device between said middle level material base runner and the said moulding die orifice, with the corresponding outer material base runner that outer material base is imported to said moulding die orifice that is provided with of said outer material base inlet.
2. improved single accumulator formula three-layer plastic co-extrusion die head as claimed in claim 1; It is characterized in that: the thick die body of said accent comprises transfers thick cylinder; Be equipped with in the thick cylinder of said accent and transfer thick piston; The thick piston of said accent is fixedly connected with transfers thick piston rod, and the thick piston rod of said accent is fixedly connected with the said core bar of carrying.
3. improved single accumulator formula three-layer plastic co-extrusion die head as claimed in claim 1; It is characterized in that: said material feeding is regulated die body and is comprised the material feeding oil cylinder; In the said material feeding oil cylinder material feeding piston is installed, said material feeding piston is fixedly connected with the material feeding piston rod, and the bottom of said material feeding piston rod is installed with; Said bottom of taking over a business is installed with push rod, and said push rod lower end is fixedly connected on said material feeding storing die body.
4. improved single accumulator formula three-layer plastic co-extrusion die head as claimed in claim 3; It is characterized in that: said material feeding storing die body comprises the material cylinder; Be provided with internal layer plug and plug junctor in the said material cylinder; Said internal layer mandrel outer is equipped with neck bush, is provided with the internal layer material base runner that is communicated with said internal layer material base inlet and said material cylinder between said neck bush and the said internal layer plug; Said neck bush is equipped with external bushing outward, is provided with between said neck bush and the said external bushing to be communicated with the enter the mouth middle level material base runner of said material cylinder of said middle level material base; Said external bushing is equipped with the material plug that is fixedly connected with said push rod outward, and said material is equipped with the material cylinder sleeve beyond the Great Wall, is provided with the outer material base runner that is communicated with said outer material base inlet and said material cylinder between the wall of said material cylinder sleeve and said material cylinder.
5. improved single accumulator formula three-layer plastic co-extrusion die head as claimed in claim 4; It is characterized in that: the double said middle level material base material-homogenating device of doing of said material plug; Said middle level material base material-homogenating device comprises and is arranged on said material refining runner beyond the Great Wall that the wall of said refining runner is provided with the protruding or helical form refining groove of helical form refining.
6. improved single accumulator formula three-layer plastic co-extrusion die head as claimed in claim 5; It is characterized in that: said moulding die orifice comprises with said carries the core that core bar is fixedly connected, and said core is provided with the mouth mould that matches and be fixedly connected with said material casing wall outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202965491U CN202186035U (en) | 2011-08-16 | 2011-08-16 | Improved three-layer plastic coextrusion die head with single storage cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202965491U CN202186035U (en) | 2011-08-16 | 2011-08-16 | Improved three-layer plastic coextrusion die head with single storage cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202186035U true CN202186035U (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202965491U Expired - Fee Related CN202186035U (en) | 2011-08-16 | 2011-08-16 | Improved three-layer plastic coextrusion die head with single storage cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202186035U (en) |
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2011
- 2011-08-16 CN CN2011202965491U patent/CN202186035U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20140816 |
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| EXPY | Termination of patent right or utility model |