CN206124203U - Reinforcement device is extruded to polylactic acid embryo material - Google Patents
Reinforcement device is extruded to polylactic acid embryo material Download PDFInfo
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- CN206124203U CN206124203U CN201621018036.3U CN201621018036U CN206124203U CN 206124203 U CN206124203 U CN 206124203U CN 201621018036 U CN201621018036 U CN 201621018036U CN 206124203 U CN206124203 U CN 206124203U
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- embryo material
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Abstract
The utility model discloses a reinforcement device is extruded to polylactic acid embryo material, including the guide die piece, an accuse module and two accuse modules, the guide die piece sets up in an accuse module top, and two accuse module setting are in an accuse module below, the bottom of guide die piece is equipped with extrudes the ejector pin, an accuse module includes an accuse mold core fixed plate, an accuse mold core and an embryo material conveyer, be equipped with embryo material hole on the embryo material conveyer, extrude ejector pin and heating die cavity, the coaxial setting of shaping die cavity, still be equipped with embryo material transfer passage in the accuse mold core, embryo material transfer passage perpendicular to embryo material heating die cavity, and embryo material transfer passage and embryo material heating die cavity communicate. The utility model discloses make polylactic acid embryo material produce the orientation effect in the course of working, and then improve the intensity of the final section bar that obtains.
Description
Technical field
This utility model is related to a kind of extrusion apparatus, more particularly to a kind of extrusion strengthening device for polylactic acid.
Background technology
Polylactic acid has good histocompatibility as a kind of degradation material, therefore has extensive use on medical use
On the way, but the polylactic acid of conventional crystal formation is because intensity and retentivity are low, constrain its application.
Chinese patent CN101342782A discloses a kind of method of polylactic acid extrusion molding, by the raw material containing polylactic acid
With nucleation agent composition in extrusion shaping machine first one-step forming, obtain semi-finished product, then semi-finished product are heated again acquisition just into
Type product, after pre-profiling product are cooled to below glass transition temperature, form stable structure to improve by recrystallization process
Product thermostability, but the polylactic acid section bar for making to prepare in this way yet suffers from the not enough defect of intensity.
In addition in the method that would generally adopt injection mo(u)lding of manufacture macromolecular material, but the physical chemistry of macromolecular material
The difference of property, manufacturing parameter is also different, needs to transform injection-moulding device, to solve injection moulding process in there is blocking, former
The problems such as material discontinuity.
Utility model content
This utility model provides a kind of polylactic acid embryo material and extrudes strengthening device, and polylactic acid embryo material is further strengthened.
The utility model discloses a kind of polylactic acid embryo material extrudes strengthening device, including oriented module, a control module and two
Control module, oriented module is arranged on control module top, and two control modules are arranged on control module lower section, and the bottom of oriented module sets
There is extrusion push rod；
One control module includes a control core rod fixed plate, a control core rod and embryo material carrier, and a control core rod fixed plate is provided with
One control core rod fixing hole, a control core rod is arranged in a control core rod fixing hole；
Two control modules include two control core rod fixed plates and two control core rods, and two control core rod fixed plates are provided with two control core rods and fix
Hole, two control core rods are arranged in two control core rod fixing holes；
The embryo material heating die cavity of cylinder is provided with one control core rod, in two control core rods product moulding die cavity is provided with, embryo material is defeated
Device is sent to be provided with embryo material hole；
Extrusion push rod is coaxially disposed with heating die cavity, shaping mold cavity；
Embryo material transfer passage is additionally provided with one control core rod, embryo material transfer passage heats die cavity perpendicular to embryo material, and embryo material is defeated
Passage is sent to connect with embryo material heating die cavity；
Product moulding die cavity include cylinder die cavity and with the round platform die cavity communicated at the top of cylinder die cavity, under round platform die cavity
The diameter of bottom surface is identical with the diameter of cylinder die cavity, and diameter and the embryo material of the upper bottom surface of round platform die cavity heat the diameter phase of die cavity
Together, the diameter of the upper bottom surface of round platform die cavity is identical with the diameter that embryo material heats die cavity；The diameter and round platform of round platform die cavity upper bottom surface
The scope of the diameter ratio of die cavity bottom surface is 9:2-9:4, in round platform die cavity, the bus of round platform and the central shaft angle model of round platform
Enclose for 12.5 ° -32.5 °；Embryo material is clamp-oned shaping mold cavity by extrusion push rod, and under the effect of the pressure, the length of embryo material increases, transversal
Area diminishes, and the deformation of embryo material makes embryo material produce orientation effect, strengthens the section bar intensity for ultimately forming.Round platform die cavity upper bottom surface
Diameter range is 6mm-24mm, and the diameter range of round platform die cavity bottom surface is 2mm-10mm.
Polylactic acid embryo material to be processed is arranged in embryo material hole, and embryo material carrier enters a control mould by embryo material transfer passage
Core, by polylactic acid embryo material the lower section of extrusion push rod is delivered to, and extrusion push rod presses to polylactic acid embryo material in embryo material heating die cavity, and one
Control core rod is heated to polylactic acid embryo material, is then extruded push rod and is continued to push, and polylactic acid embryo material is clamp-oned into the type of two control core rods
Material shaping mold cavity forms processing.
Preferably, in round platform die cavity, the bus of round platform is 18 ° -25 ° with the central shaft angular range of round platform；Embryo material is from circle
When platform die cavity enters cylinder die cavity, cross-sectional area is tapered into, and produces orientation effect, strengthens the tensile strength of final section bar.
Preferably, embryo material hole includes embryo material hole main body and embryo material hole head, and embryo material hole head is frustum cone structure, embryo material hole head
The diameter with diameter greater than its bottom surface of the upper bottom surface in portion, embryo material hole main body be cylindrical structure, the bottom surface of embryo material hole head
Diameter it is identical with the diameter of embryo material hole main body, it is convenient that embryo material is put into into embryo material hole；
Embryo material heating die cavity is identical with the diameter of embryo material hole main body, and embryo material is clamp-oned embryo material by convenient extrusion push rod from embryo material hole
Heating die cavity.
Preferably, two control modules also include bar gag lever post and gag lever post backing plate, and bar gag lever post is arranged on product moulding
The bottom of die cavity, gag lever post backing plate is arranged on the bottom of two control core rod fixed plates, is coaxially disposed with two control core rods, bar gag lever post
Diameter be equal to cylinder die cavity diameter.Bar gag lever post is set, profile length and pressurized situation can be preferably controlled.
Preferably, the polylactic acid embryo timber-used that embryo material hole conveys every time produces one in a product is shaped using an embryo material
Bar more can rationally control the condition of strengthening process, with the embryo material preheating time for solving that an embryo material produces that branched bar causes
And the problem that stress degree differs.
Preferably, the diameter range of round platform die cavity upper bottom surface is 6mm-18mm, and the diameter range of round platform die cavity bottom surface is
2mm-8mm。
Preferably, a diameter of 18mm of round platform die cavity upper bottom surface, the diameter range of round platform die cavity bottom surface is 6mm-8mm.
Preferably, a diameter of 12mm of round platform die cavity upper bottom surface, the diameter range of round platform die cavity bottom surface is 4mm-
4.5mm。
Preferably, a diameter of 6mm of round platform die cavity upper bottom surface, the diameter range of round platform die cavity bottom surface is 2mm.
Preferably, embryo material carrier includes auxiliary extrusion rod, when the stroke of extrusion push rod is restricted, is not enough to embryo material is complete
During full extrusion, extrusion push rod pushes auxiliary extrusion rod, and polylactic acid embryo material is clamp-oned section bar shaping mold cavity by auxiliary extrusion rod.
Preferably, two control core rods include main body and shoulder, and the cross section of shoulder is more than the cross section of main body, and two control core rods are consolidated
Determine to be provided with step at the top of hole, the shoulder of two control core rods is stuck on the step of two control core rod fixing holes, the shoulder of two control core rods
The height of the step of core rod fixing holes is highly controlled more than or equal to two, it is ensured that a control core rod can be close on two control core rods, kept away
Exempt from the gap that polylactic acid embryo material is squeezed between a control core rod and two control core rods；Two control core rods are highly less than two control core rod fixing holes
Height, it is ensured that two control core rods lower sections are hanging, leave the space for arranging bar gag lever post and gag lever post backing plate.
One control core rod fixed plate is provided with a control pilot hole and buffering spring eye, the lower end closed in buffer spring hole, two controls
Core rod fixed plate is provided with two control pilot holes, a control pilot hole, two control pilot holes quantity it is identical with the quantity of mould lead column, and
Position correspondence；Guide pin bushing is provided with one control pilot hole, the internal diameter of guide pin bushing controls the diameter of pilot holes less than two.
Using polylactic acid embryo material extrusion strengthening device disclosed in this utility model, can be by the polylactic acid embryo material of first one-step forming
Strengthened, orientation texture is realized by stress, strengthened the intensity of final section bar, bending strength can be produced and reached
The polylactic acid section bar of 310MPa；And extrusion equipment is improved, solve in extrusion process and blocking, stress occur not
, the problems such as end properties are uneven.
Description of the drawings
Fig. 1 is this utility model structural representation；
Fig. 2 is this utility model structural decomposition diagram；
Fig. 3 is a control core rod schematic diagram；
Fig. 4 is two control core rod sectional views.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, the utility model discloses a kind of polylactic acid embryo material extrudes strengthening device, including guiding module
Block 1, a control control module 3 of module 2 and two, oriented module 1 is arranged on the top of a control module 2, and two control modules 3 are arranged on a control module
2 lower sections, oriented module 1 includes die backing plate 11, and the bottom of die backing plate 11 is provided with support spring 12, mould lead column 13 and squeezes
Go out push rod 16, extrude the lower section that push rod 16 is fixed on oriented module 1 by push rod pressing plate 15；
One control module 2 includes that a control core rod fixed plate 25, is controlled core rod 24, embryo material carrier 22, limit pull rod 21 and squeezed
Go out auxiliary rod 23, a control core rod fixed plate 25 is provided with a control core rod fixing hole, and a control core rod 24 is arranged on a control core rod and fixes
Kong Zhong, embryo material carrier is provided with embryo material hole；
Two control modules 3 include two control core rod fixed plates 33 and two control core rods 31, and two control core rod fixed plates 33 are provided with two controls
Core rod fixing hole, two control core rods 31 are arranged in two control core rod fixing holes；
As shown in Figure 3 and Figure 4, the embryo material heating die cavity 241 of cylinder is provided with a control core rod 24, is provided with two control core rods
Product moulding die cavity 311；
Extrusion push rod 16 is coaxially disposed with heating die cavity 241, shaping mold cavity 311；
Embryo material transfer passage 242 is additionally provided with one control core rod 24, embryo material transfer passage 242 heats die cavity perpendicular to embryo material
241, and embryo material transfer passage 242 and embryo material heating die cavity 241 connects；
Polylactic acid embryo material to be processed is arranged in embryo material hole, and embryo material carrier 22 is entered by embryo material transfer passage 242
One control core rod 24, by polylactic acid embryo material the lower section of extrusion push rod 16 is delivered to, and polylactic acid embryo material is pressed to embryo material by extrusion push rod 16
In heating die cavity 241, a control core rod 24 is heated to polylactic acid embryo material, is then extruded push rod 16 and is exited embryo material hole, and embryo material is defeated
Send device to exit a control core rod fixed plate 25, then extrusion auxiliary rod 23 is arranged in embryo material hole, embryo material carrier 22 will be extruded auxiliary
Rod 23 is helped to deliver to the lower section of extrusion push rod 16, extrusion push rod 16 pushes extrusion auxiliary rod 23, polylactic acid embryo material is clamp-oned into two control core rods
31 product moulding die cavity 311 forms processing.
In one embodiment of the present utility model, embryo material hole includes embryo material hole main body and embryo material hole head, embryo material hole head
Portion is frustum cone structure, and the diameter with diameter greater than its bottom surface of the upper bottom surface of embryo material hole head, embryo material hole main body is cylinder knot
Structure, the diameter of the bottom surface of embryo material hole head is identical with the diameter of embryo material hole main body, convenient that embryo material is put into into embryo material hole；
Embryo material heating die cavity 241 is identical with the diameter of embryo material hole main body, and convenient extrusion push rod 16 squeezes embryo material from embryo material hole
Enter embryo material heating die cavity 241.
Product moulding die cavity 311 include cylinder die cavity 311b and with the round platform die cavity 311a communicated at the top of cylinder die cavity,
The diameter of the bottom surface of round platform die cavity 311a is identical with the diameter of cylinder die cavity 311b, the diameter of the upper bottom surface of round platform die cavity 311a
It is identical with the diameter that embryo material heats die cavity 241；The diameter of round platform die cavity upper bottom surface and the diameter ratio of round platform die cavity bottom surface
Scope is 9:2-9:4；Embryo material is clamp-oned section bar shaping mold cavity 311 by extrusion push rod, and under the effect of the pressure, the length of embryo material increases
Plus, cross-sectional area diminishes, and the deformation of embryo material makes embryo material produce orientation effect, strengthens the section bar intensity for ultimately forming.
In round platform die cavity 311a, the bus of round platform is 12.5 ° -32.5 ° with the central shaft angular range of round platform；Embryo material is from circle
When platform die cavity enters cylinder die cavity, cross-sectional area is tapered into, and produces orientation effect, strengthens the tensile strength of final section bar.
In one embodiment of the present utility model, two control modules also include bar gag lever post 32 and gag lever post backing plate 34,
Bar gag lever post is arranged on the bottom of product moulding die cavity, and gag lever post backing plate is arranged on the bottom of two control core rod fixed plates, with two
Control core rod is coaxially disposed, and the diameter of bar gag lever post is less than the diameter of cylinder die cavity.Bar gag lever post is set, polylactic acid is more convenient
After shaping, the section bar demoulding.
In one embodiment of the present utility model, the polylactic acid embryo timber-used that embryo material hole conveys every time is in one product of shaping
Product, producing a bar using an embryo material more can rationally control the condition of strengthening process, branched to solve an embryo material production
The embryo material preheating time that bar is caused and the problem that stress degree differs.
In one embodiment of the present utility model, the diameter range of round platform die cavity upper bottom surface is 6mm-18mm, round platform mould
The diameter range of chamber bottom surface is 2mm-8mm.
In one embodiment of the present utility model, a diameter of 18mm of round platform die cavity upper bottom surface, round platform die cavity bottom surface
Diameter range be 6mm-8mm.
In one embodiment of the present utility model, a diameter of 12mm of round platform die cavity upper bottom surface, round platform die cavity bottom surface
Diameter range be 4mm-4.5mm.
In one embodiment of the present utility model, a diameter of 6mm of round platform die cavity upper bottom surface, round platform die cavity bottom surface
Diameter range is 2mm.
In one embodiment of the present utility model, first the embryo material of diameter 12mm is clamp-oned into embryo material from embryo material carrier
Heating die cavity is heated, and heating-up temperature is set to 160 DEG C, and the two control core rods for being preheated to 120 DEG C are put into into two after the completion of heating
Control core rod fixed plate, extrusion push rod is pushed, and embryo material is clamp-oned into section bar shaping mold cavity, and the cylinder die cavity of product moulding die cavity is a diameter of
4mm.After the completion of extruding, take out two and control core rod cooling, the demoulding after the completion of cooling.
In one embodiment of the present utility model, two control core rods include main body and shoulder, and the cross section of shoulder is more than master
The cross section of body, is provided with step at the top of two control core rod fixing holes, the shoulder of two control core rods is stuck in the platform of two control core rod fixing holes
On rank, the height of the shoulder of two control core rods controls the height of the step of core rod fixing holes more than or equal to two, it is ensured that a control core rod energy
Enough it is close on two control core rods, it is to avoid polylactic acid embryo material is squeezed into the gap between a control core rod and two control core rods, two control core rods
Highly less than the height of two control core rod fixing holes；And ensure that two control core rods lower section is hanging, leave for arrange bar gag lever post and
The space of gag lever post backing plate.
One control core rod fixed plate is provided with a control pilot hole and buffering spring eye, the lower end closed in buffer spring hole, two controls
Core rod fixed plate is provided with two control pilot holes, a control pilot hole, two control pilot holes quantity it is identical with the quantity of mould lead column, and
Position correspondence；Guide pin bushing 14 is provided with one control pilot hole, the internal diameter of guide pin bushing 14 controls the diameter of pilot holes less than two.
In one embodiment of the present utility model, the final poly lactic acid type timber-used for obtaining is in preparing medical use bone screw.
Using polylactic acid embryo material extrusion strengthening device disclosed in this utility model, can be by the polylactic acid embryo material of first one-step forming
Strengthened, orientation texture is realized by stress, strengthened the intensity of final section bar, bending strength can be produced and reached
The polylactic acid section bar of 310MPa；And extrusion equipment is improved, solve in extrusion process and blocking, stress occur not
, the problems such as end properties are uneven.
The announcement and teaching of book according to the above description, this utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and changed.Therefore, this utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of utility model should also be as falling in scope of the claims of the present utility model.Although additionally,
Some specific terms used in this specification, but these terms are merely for convenience of description, not to this utility model structure
Into any restriction.
Claims (10)
1. a kind of polylactic acid embryo material extrudes strengthening device, including oriented module, a control module and two control modules, and oriented module is arranged
Above a control module, two control modules are arranged on control module lower section, it is characterised in that：
The bottom of the oriented module is provided with extrusion push rod；
The one control module includes a control core rod fixed plate, a control core rod and embryo material carrier, and a control core rod fixed plate is provided with
One control core rod fixing hole, a control core rod is arranged in a control core rod fixing hole；
The two controls module includes two control core rod fixed plates and two control core rods, and two control core rod fixed plates are provided with two control core rods and fix
Hole, two control core rods are arranged in two control core rod fixing holes；
The embryo material heating die cavity of cylinder is provided with the one control core rod, in the two controls core rod product moulding die cavity, institute are provided with
State embryo material carrier and be provided with embryo material hole；
The extrusion push rod is coaxially disposed with heating die cavity, shaping mold cavity；
Embryo material transfer passage is additionally provided with the one control core rod, embryo material transfer passage heats die cavity perpendicular to embryo material, and embryo material is defeated
Passage is sent to connect with embryo material heating die cavity；
The product moulding die cavity include cylinder die cavity and with the round platform die cavity communicated at the top of cylinder die cavity, under round platform die cavity
The diameter of bottom surface is identical with the diameter of cylinder die cavity, and diameter and the embryo material of the upper bottom surface of round platform die cavity heat the diameter phase of die cavity
Together；
The diameter of the round platform die cavity upper bottom surface is 9 with the scope of the diameter ratio of round platform die cavity bottom surface:2-9:4；
In the round platform die cavity, the bus of round platform is 12.5 ° -32.5 ° with the central shaft angular range of round platform；
The diameter range of the round platform die cavity upper bottom surface is 6mm-24mm, and the diameter range of round platform die cavity bottom surface is 2mm-
10mm；
Polylactic acid embryo material to be processed is arranged in embryo material hole, and embryo material carrier enters a control core rod by embryo material transfer passage,
Polylactic acid embryo material is delivered to into extrusion push rod lower section, extrusion push rod presses to polylactic acid embryo material in embryo material heating die cavity, two control moulds
Core is heated to polylactic acid embryo material, push rod is extruded afterwards and continues to push, and polylactic acid embryo material is clamp-oned two control core rods after preheating
Product moulding die cavity form processing.
2. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：The embryo material hole includes
Embryo material hole main body and embryo material hole head, embryo material hole head be frustum cone structure, the upper bottom surface of embryo material hole head with diameter greater than under it
The diameter of bottom surface；Embryo material hole main body is cylindrical structure, the diameter of the bottom surface of embryo material hole head and the diameter of embryo material hole main body
It is identical.
3. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：The embryo material heated mould
Chamber is identical with the diameter of embryo material hole main body.
4. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：The two controls module
Also include bar gag lever post and gag lever post backing plate, bar gag lever post is arranged on the bottom of product moulding die cavity, and gag lever post backing plate sets
Put in the bottom of two control core rod fixed plates, bar gag lever post is coaxially disposed with two control core rods.
5. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：In round platform die cavity, circle
The bus of platform is 18 ° -25 ° with the central shaft angular range of round platform.
6. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：On the round platform die cavity
A diameter of 18mm of bottom surface, the diameter range of round platform die cavity bottom surface is 6-8mm.
7. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：On the round platform die cavity
A diameter of 12mm of bottom surface, the diameter range of round platform die cavity bottom surface is 4-4.5mm.
8. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：On the round platform die cavity
A diameter of 6mm of bottom surface, the diameter range of round platform die cavity bottom surface is 2mm.
9. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：The embryo material carrier
Including auxiliary extrusion rod, extrusion push rod pushes auxiliary extrusion rod, and polylactic acid embryo material is clamp-oned section bar shaping mold cavity by auxiliary extrusion rod.
10. a kind of polylactic acid embryo material according to claim 1 extrudes strengthening device, it is characterised in that：The embryo material hole is every
The polylactic acid embryo timber-used of secondary conveying is in one section bar of shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621018036.3U CN206124203U (en) | 2016-08-31 | 2016-08-31 | Reinforcement device is extruded to polylactic acid embryo material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621018036.3U CN206124203U (en) | 2016-08-31 | 2016-08-31 | Reinforcement device is extruded to polylactic acid embryo material |
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| Publication Number | Publication Date |
|---|---|
| CN206124203U true CN206124203U (en) | 2017-04-26 |
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ID=58567875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621018036.3U Active CN206124203U (en) | 2016-08-31 | 2016-08-31 | Reinforcement device is extruded to polylactic acid embryo material |
Country Status (1)
| Country | Link |
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| CN (1) | CN206124203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346767A (en) * | 2016-08-31 | 2017-01-25 | 苏州西脉新诚生物科技有限公司 | Polylactic acid blank extrusion strengthening equipment |
| CN108454074A (en) * | 2018-03-28 | 2018-08-28 | 中国航发北京航空材料研究院 | A kind of orientation intensifying method of thermoplastic resin |
-
2016
- 2016-08-31 CN CN201621018036.3U patent/CN206124203U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346767A (en) * | 2016-08-31 | 2017-01-25 | 苏州西脉新诚生物科技有限公司 | Polylactic acid blank extrusion strengthening equipment |
| CN106346767B (en) * | 2016-08-31 | 2018-08-28 | 苏州西脉新诚生物科技有限公司 | A kind of polylactic acid embryo material extrusion strengthening device |
| CN108454074A (en) * | 2018-03-28 | 2018-08-28 | 中国航发北京航空材料研究院 | A kind of orientation intensifying method of thermoplastic resin |
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