CN212194146U - Extrusion screw and extrusion structure suitable for XETFE material - Google Patents
Extrusion screw and extrusion structure suitable for XETFE material Download PDFInfo
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- CN212194146U CN212194146U CN202020067752.0U CN202020067752U CN212194146U CN 212194146 U CN212194146 U CN 212194146U CN 202020067752 U CN202020067752 U CN 202020067752U CN 212194146 U CN212194146 U CN 212194146U
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Abstract
The utility model discloses an extrusion screw and an extrusion structure suitable for an XETFE material, which comprises a screw body, wherein the screw body comprises a feeding section, a compression section, a homogenization section and a screw end socket; the length-diameter ratio of the screw body is 23: 1. the compression ratio of the screw is 3: 1; the feeding section is provided with 12 screw pitches; the compression section is provided with 3 screw pitches; the homogenizing section is provided with 5 screw pitches; the thread pitch is the same as the diameter of the screw body; the screw body is provided with 1/10 the thread width of which is the thread pitch; the end of the screw rod is conical at an angle of 30 degrees. And: an extrusion screw is mounted in the barrel of the extruder to form an extrusion mechanism. The utility model discloses a screw rod end adopts the taper shape to stretch into behind the machine neck and forms the canalis spinalis runner with toper chamber, and the canalis spinalis runner is used with the conical cooperation in screw rod end, has filled and has accounted for the dead angle district, forms the streamlined passageway at no dead angle with the toper chamber, has alleviated the fuse-element heat cross-linking phenomenon that the dead angle district arouses effectively, and exhaust gas does not produce the dead material impurity.
Description
Technical Field
The utility model relates to a wire and cable makes the field, especially relates to an extrude screw rod and crosslinked F40 extrusion structure suitable for XETFE material.
Background
The XETFE material is widely applied to the aerospace wire and cable industry due to the excellent performance of the XETFE material, but due to the limitation of the extrusion performance of the XETFE material, a common high-temperature extruder cannot meet the processing requirement of the XETFE material, so that the product mainly depends on import at present. According to the research on the XETFE material, the pure ETFE resin and other components are added into the XETFE material, so that the melting and flowing of ETFE are completely changed, and the XETFE in a common extruder barrel or a traditional extrusion screw rod is easy to thermally crosslink and degrade to different degrees to generate bubbles and lumps, so that the extrusion insulation quality is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that appears bubble, pimple when ordinary extruding means extrusion molding XETFE of prior art insulates the utility model discloses an extruding screw rod and cross-linking F40 extrusion structure suitable for XETFE material solves the problem that bubble, pimple appear in the XETFE extrusion process to realize not having bubble pimple when extruding, thereby improve insulating quality's technological effect.
In order to achieve the above object, the utility model provides a following technical scheme:
an extrusion screw suitable for an XETFE material comprises a screw body, wherein the screw body comprises a feeding section, a compression section, a homogenizing section and a screw end;
the length-diameter ratio of the screw body is 23: 1. the compression ratio of the screw is 3: 1;
the feeding section is provided with 12 screw pitches; the compression section is provided with 3 screw pitches; the homogenizing section is provided with 5 screw pitches; the thread pitch is the same as the diameter of the screw body; the screw body is provided with 1/10 the thread width of which is the thread pitch; the end of the screw rod is conical at an angle of 30 degrees.
Further, the diameter of the screw body is gradually increased from the feeding section to the homogenizing section.
In order to solve the problem of the utility model, the extrusion mechanism using the extrusion screw is adopted.
A cross-linked F40 extrusion structure comprises an extruder barrel connected with a rotating mechanism, wherein an extruder neck is arranged in the extrusion direction of the extruder barrel; the extruding screw is arranged in the extruder barrel; the extrusion screw is rotationally connected with the rotating mechanism.
Furthermore, the interior of the extruder barrel is divided into a feeding area, a compression area and a homogenization area which are respectively matched with a feeding section, a compression section and a homogenization section of the extrusion screw.
Furthermore, a conical cavity with the same conical angle as the end of the screw rod is arranged in the neck of the extruder; the conical cavity is provided with a conical opening and is communicated with the outside of the neck of the extruder.
Further, the extruder barrel comprises a feed inlet which is arranged at the upper part of the feeding area and is communicated with the inside of the extruder barrel.
Further, a machine head is arranged on the neck of the extruder; a material conveying opening corresponding to the conical opening is formed in the inner side of the machine head; the material conveying port is communicated with the insulating hole. And an extruder sieve plate is arranged in the extruder neck.
Compared with the prior art, the utility model has the advantages as follows:
1. an extrusion screw suitable for an XETFE material comprises a screw body, wherein the screw body comprises a feeding section, a compression section, a homogenizing section and a screw end; the length-diameter ratio of the screw body is 23: 1. the compression ratio of the screw is 3: 1; the feeding section is provided with 12 screw pitches; the compression section is provided with 3 screw pitches; the homogenizing section is provided with 5 screw pitches; the thread pitch is the same as the diameter of the screw body; the screw body is provided with 1/10 the thread width of which is the thread pitch; the end of the screw rod is conical at an angle of 30 degrees. In the embodiment of the application, the design of the screw and the machine head can avoid the material from staying in the extruder for a long time, and dead material impurities and bubbles are avoided. The XETFE screw rod end adopts a conical shape, extends into the machine neck, forms a conical tube flow channel with the conical cavity, has a cone angle of 30 degrees and is matched with the 30-degree conical shape of the screw rod end for use, so that the retention time of materials in the extruder can be guaranteed to the maximum extent, meanwhile, the end is lengthened, occupies a dead angle area, forms a streamline channel without a dead angle with the conical cavity, effectively relieves the melt heat cross-linking phenomenon caused by the dead angle area, discharges gas and does not generate dead material impurities. A filter screen is added between the common screw and the conical cavity to increase the extrusion pressure and remove impurities. When needs extrusion molding XETFE material is insulated, will the utility model discloses an extrude the screw rod and install in the extruder, make the XETFE material get into from the feed inlet, rotate through the screw rod and send the material to the pay-off district, the compression district, the homogenization district sends the neck district to at last, flows in the aircraft nose, passes through the crowded package of aircraft nose to the material on the sinle silk.
2. A cross-linked F40 extrusion structure comprises an extruder barrel connected with a rotating mechanism, wherein an extruder neck is arranged in the extrusion direction of the extruder barrel; the extruding screw is arranged in the extruder barrel; the extrusion screw is rotationally connected with the rotating mechanism. In the embodiment of the application, the design of the screw and the machine head can avoid the material from staying in the extruder for a long time, and avoid dead material impurities and bubbles; the end head of the XETFE screw rod adopts a conical shape, extends into the machine neck and forms a vertebral canal flow channel with the conical cavity, the conical angle of the vertebral canal flow channel is 30 degrees, and the conical angle is matched with the 30-degree conical shape of the screw rod end head for use, so that the retention time of materials in the extruder can be guaranteed to the maximum extent, and meanwhile, the end head is lengthened to occupy a dead angle area; the screw rod end and the conical cavity form a streamline channel without dead angles, so that the heat cross-linking phenomenon of the melt caused by a dead angle area is effectively relieved, gas is discharged, and no dead material impurities are generated. When needs extrusion molding XETFE material is insulated, will the utility model discloses an extrude the screw rod and install in the extruder barrel, start slewing mechanism, make the XETFE material get into the barrel from the feed inlet through the feed inlet in, send the material to pay-off district, compression district, homogenization district through the screw rod rotation and send the neck district to at last, flow into the aircraft nose, crowd the package on the sinle silk through the aircraft nose to the material. When the ordinary material is extruded to needs, can with the utility model discloses an extrude the screw rod and dismantle, install ordinary screw rod, increase the filter screen again between ordinary screw rod and toper chamber, increase extrusion pressure, detach impurity can, realize that the purpose of extrusion molding can be realized on same equipment to XETFE material and ordinary material.
Drawings
Fig. 1 is a schematic structural diagram of the extrusion screw and the extrusion structure suitable for the XETFE material.
Fig. 2 is a schematic structural diagram of the common screw and the extrusion structure of the present invention.
Fig. 3 is an enlarged view of fig. 1 a according to the present invention.
Reference numerals:
wherein: 1. a screw body; 11. a feeding section; 12. a compression section; 13. a homogenization section; 14. a screw end; 2. an extruder barrel; 21. a feeding zone; 22. a compression zone; 23. a homogenization zone; 3. an extruder neck; 31. a tapered cavity; 32. a conical opening; 4. a sieve plate of the extruder; 5. a feed inlet; 6. a machine head; 61. an insulating hole; 62. a material conveying port; 7. a wire core; 8. a rotation mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely in the following embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Description of the drawings: it is obvious that the invention mainly provides a concept, all technical features details of which cannot be fully refined, and nothing disclosed is left to the knowledge and height of a person skilled in the art to choose from.
Example 1, described in connection with figures 1-3.
An extrusion screw suitable for an XETFE material comprises a screw body 1, wherein the screw body 1 comprises a feeding section 11, a compression section 12, a homogenizing section 13 and a screw end 14;
the length-diameter ratio of the screw body 1 is 23: 1. the compression ratio of the screw is 3: 1;
the feeding section 11 is provided with 12 screw pitches; the compression section 12 is provided with 3 screw pitches; the homogenizing section 13 is provided with 5 screw pitches; the thread pitch is the same as the diameter of the screw body 1; the screw body 1 is provided with 1/10 the thread width of which is the thread pitch; the screw head 14 is conical at 30 °.
Further, the diameter of the screw body 1 gradually becomes larger from the feeding section 11 to the homogenizing section 13.
In the embodiment of the application, the design of the screw and the machine head can avoid the material from staying in the extruder for a long time, and dead material impurities and bubbles are avoided. The XETFE screw rod end adopts the taper shape to stretch into the machine neck and form a cone channel with the tapered cavity, the taper angle of the cone channel is 30 degrees and is used in cooperation with the taper shape of the screw rod end by 30 degrees, the retention time of materials in the extruder can be guaranteed to the maximum degree, meanwhile, the end is lengthened, a dead angle area is occupied, the screw rod end and the tapered cavity form a streamline channel without a dead angle, the melt heat cross-linking phenomenon caused by the dead angle area is effectively relieved, gas is discharged, and no dead material impurities are generated. When the XETFE material needs to be extruded for insulation, the extruding screw rod of the utility model is arranged in the extruder, so that the XETFE material enters from the feed inlet, and is conveyed to the feeding area, the compression area and the homogenization area through the rotation of the screw rod, and finally is conveyed to the machine neck area; flows into the machine head, and extrudes the material on the wire core through the machine head.
Example 2, described in connection with figures 1-3.
For further clarification the technical effect of the utility model, install the extrusion screw in embodiment 1 at extrusion mechanism, solve the technical problem of the utility model:
a cross-linked F40 extrusion structure comprises an extruder barrel 2 connected with a rotating mechanism 8, wherein an extruder neck 3 is arranged in the extrusion direction of the extruder barrel 2; the extruding screw is arranged in the extruder barrel 2; the extrusion screw is rotationally connected with the rotating mechanism 8.
Further, the interior of the extruder barrel 2 is divided into a feeding zone 21, a compression zone 22 and a homogenizing zone 23 which are respectively matched with the feeding section 11, the compression section 12 and the homogenizing section 13 of the extrusion screw.
Further, a conical cavity 31 with the same conical angle as the screw end 14 is arranged in the extruder neck 3; the conical chamber 31 is provided with a cone mouth 32 and communicates with the outside of the extruder neck 3.
Further, the extruder barrel 2 comprises a feed inlet 5 which is arranged at the upper part of the feeding area 21 and is communicated with the interior of the extruder barrel 3.
Further, a machine head 6 is arranged on the extruder neck 3; a material conveying opening 62 corresponding to the conical opening 32 is formed in the inner side of the machine head 6; the material conveying port 62 communicates with the insulating hole 61. The insulation holes 61 are used for smoothly extruding and wrapping the compressed and homogenized insulation material on the wire core.
Further, an extruder sieve plate 4 is arranged in the extruder neck 3.
In the embodiment of the application, the design of the screw and the machine head can avoid the material from staying in the extruder for a long time, and avoid dead material impurities and bubbles; the end head of the XETFE screw rod adopts a conical shape, extends into the machine neck and forms a vertebral canal flow channel with the conical cavity, the conical angle of the vertebral canal flow channel is 30 degrees, and the conical angle is matched with the 30-degree conical shape of the screw rod end head for use, so that the retention time of materials in the extruder can be guaranteed to the maximum extent, and meanwhile, the end head is lengthened to occupy a dead angle area; the screw rod end and the conical cavity form a streamline channel without dead angles, so that the heat cross-linking phenomenon of the melt caused by a dead angle area is effectively relieved, gas is discharged, and no dead material impurities are generated. When needs extrusion molding XETFE material carries out insulating crowded package, will the utility model discloses an extrude the screw rod and install in the extruder barrel, start slewing mechanism, make the XETFE material get into the barrel from the feed inlet through the feed inlet in, rotate through the screw rod and send the material to pay-off district, compression district, homogenization district and send the neck district to at last to the aircraft nose, flow in the aircraft nose, crowd the package on the sinle silk through the aircraft nose to the material. When the ordinary material is extruded to needs, can with the utility model discloses an extrude the screw rod and dismantle, install ordinary screw rod, increase the filter screen again between ordinary screw rod and toper chamber, increase extrusion pressure, detach impurity can, realize that the purpose of extrusion molding can be realized on same equipment to XETFE material and ordinary material.
The working principle is as follows:
as for the cross-linked F40 extrusion structure shown in fig. 1, the extrusion screw of the present invention is installed in the cylinder of the cross-linked F40 extrusion structure and then adjusted; starting a rotating mechanism to drive the extrusion screw to rotate; adding an XETFE material into the feeding hole to enable the XETFE material to enter a feeding area, enabling the XETFE material to enter a machine barrel along the feeding area, compressing and homogenizing the XETFE material under the driving of an extrusion screw, and then enabling the XETFE material to enter a machine neck area to flow into a conical cavity of a machine head; because the taper angle of the screw end is consistent with the taper cavity of the machine head, namely the taper angle is 30 degrees and is in conical fit with the screw end by 30 degrees, the XETFE material enters the screw end and forms a streamline channel without dead angles with the taper cavity, the heat cross-linking phenomenon of a melt caused by a dead angle area is effectively relieved, gas is discharged, dead material impurities are not generated, and finally the material without bubbles and impurities is extruded on the wire core through the machine head to realize the insulation of the XETFE material extruded on the wire core without bubbles and impurities.
Finally, it should be noted that: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. An extrusion screw suitable for an XETFE material comprises a screw body and is characterized in that the screw body comprises a feeding section, a compression section, a homogenizing section and a screw end head;
the length-diameter ratio of the screw body is 23: 1; the compression ratio of the screw is 3: 1;
the feeding section is provided with 12 screw pitches; the compression section is provided with 3 screw pitches; the homogenizing section is provided with 5 screw pitches; the thread pitch is the same as the diameter of the screw body; the screw body is provided with 1/10 the thread width of which is the thread pitch; the end of the screw rod is conical at an angle of 30 degrees.
2. The extrusion screw suitable for an XETFE material of claim 1, wherein the diameter of the screw body becomes progressively larger along the feed section to the homogenizing section.
3. A cross-linked F40 extrusion structure comprises an extruder barrel connected with a rotating mechanism, wherein an extruder neck is arranged in the extrusion direction of the extruder barrel; the extruder barrel housing an extrusion screw as defined in claim 1; the extrusion screw is rotationally connected with the rotating mechanism.
4. The cross-linked F40 extrusion structure of claim 3, wherein the interior of the extruder barrel is divided into a feeding zone, a compression zone and a homogenizing zone which are respectively matched with a feeding section, a compression section and a homogenizing section of the extrusion screw.
5. The cross-linked F40 extrusion structure of claim 3, wherein a tapered cavity is provided in the extruder neck that conforms to the taper angle of the screw tip; the conical cavity is provided with a conical opening and is communicated with the outside of the neck of the extruder.
6. The cross-linked F40 extrusion structure of claim 3, wherein the extruder barrel includes a feed port disposed in an upper portion of the feed zone and in communication with the interior of the extruder barrel.
7. A cross-linked F40 extrusion structure as claimed in any one of claims 3 to 6, wherein the extruder neck is fitted with a head; a material conveying opening corresponding to the conical opening is formed in the inner side of the machine head; the material conveying port is communicated with the insulating hole.
8. The cross-linked F40 extrusion structure of claim 7 wherein the extruder neck has an extruder screen mounted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020067752.0U CN212194146U (en) | 2020-01-14 | 2020-01-14 | Extrusion screw and extrusion structure suitable for XETFE material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020067752.0U CN212194146U (en) | 2020-01-14 | 2020-01-14 | Extrusion screw and extrusion structure suitable for XETFE material |
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| Publication Number | Publication Date |
|---|---|
| CN212194146U true CN212194146U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020067752.0U Active CN212194146U (en) | 2020-01-14 | 2020-01-14 | Extrusion screw and extrusion structure suitable for XETFE material |
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| CN (1) | CN212194146U (en) |
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- 2020-01-14 CN CN202020067752.0U patent/CN212194146U/en active Active
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