CN209775497U - Single-screw extruder for producing low-smoke halogen-free cable material and single screw thereof - Google Patents
Single-screw extruder for producing low-smoke halogen-free cable material and single screw thereof Download PDFInfo
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- CN209775497U CN209775497U CN201920300846.5U CN201920300846U CN209775497U CN 209775497 U CN209775497 U CN 209775497U CN 201920300846 U CN201920300846 U CN 201920300846U CN 209775497 U CN209775497 U CN 209775497U
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- 239000000463 material Substances 0.000 title claims abstract description 145
- 239000000779 smoke Substances 0.000 title claims abstract description 20
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 17
- 150000002367 halogens Chemical class 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a be used for producing low smoke and zero halogen cable material single screw extruder and single screw rod thereof uses in the extruder field, and its technical scheme main points are: the material conveying device comprises a rod body, a first material conveying piece and a second material conveying piece which are spirally wound on the outer edge of the rod body, wherein a plurality of mixing pieces are arranged on the rod body between the first material conveying piece and the second material conveying piece, the mixing pieces are spirally arranged on the outer edge of the rod body, and the spiral directions of all the mixing pieces are the same as those of the first material conveying piece and the second material conveying piece; has the technical effects that: the mixing sheet can fully mix materials, and the mixing uniformity of the materials in the extruder is improved.
Description
Technical Field
The utility model relates to an extruder field, in particular to be used for producing low smoke and zero halogen cable material single screw extruder and single screw rod thereof.
Background
Chinese patent No. CN206999584U discloses a single screw extruder for preparing 90 ℃ thermoplastic low smoke zero halogen material, the motor of which is installed on the base, the transmission case is installed on the base, the left end of the extruder barrel body is installed on the bearing block, the bearing block is installed on the pillar, the pillar is installed on the base, the right end of the extruder barrel body is installed on the transmission case, the screw is installed in the extruder barrel body, the cooling jacket is installed at the feed inlet outside the extruder barrel body, the heater is installed outside the extruder barrel body, the heat preservation jacket is installed outside the heater, the base is installed at the feed inlet of the extruder barrel body, the cone hopper is installed on the base, the feed barrel is installed on the cone hopper through a barrel hinge, one end of the electric heating barrel is connected with the cone hopper, the other end of the electric heating barrel is installed on the electric heating box.
The single-screw extruder only can convey materials by using an ordinary screw, and the materials in the extruder cannot be sufficiently mixed, so that the mixing uniformity of the materials is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a single screw rod for producing low smoke and zero halogen cable material single screw extruder, its advantage: the material can be fully mixed, and the mixing uniformity of the material in the extruder is improved.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a single screw rod for producing extruder of low smoke and zero halogen cable material, includes the body of rod and is the heliciform and coils at the first defeated tablet of body of rod outer fringe and the defeated tablet of second, the body of rod is equipped with mixing piece between the defeated tablet of first defeated tablet and second, mixing piece is equipped with a plurality ofly and is the heliciform in body of rod outer fringe, and all mixing piece is the same with the spiral direction homogeneous phase of first defeated tablet and the defeated tablet of second.
Through above-mentioned technical scheme, the material gets into in the extruder after, moves towards the discharge end under the promotion of first defeated tablet, and when the material moved to mixed tablet department, because mixed tablet is equipped with a plurality ofly, consequently can play the effect that a stirring was mixed to the material to with the material intensive mixing in the extruder homogeneous, promote the material quality of extruder output.
The utility model discloses further set up to: the rod body is divided into a first section, a middle section and a second section in sequence from the material inlet end to the material outlet end, the first material conveying piece is arranged on the first section, the mixing piece is arranged on the middle section, the second material conveying piece is arranged on the second section, the diameter of the first section close to the material inlet end is set as d1, the diameter of the first section close to the material outlet end is set as d2, and d2 is greater than d 1.
Through above-mentioned technical scheme, the diameter of first section grow gradually to can compress the material that gets into the extruder gradually, thereby compress the material and carry towards mixing piece direction on one side, the shaping is changeed and the feed amount that can improve the extruder to the material after the compression.
The utility model discloses further set up to: the diameter of the second section close to the middle section is set as d3, the diameter of the second section far from the middle section is set as d4, d4 is greater than d3, and d3 is less than d 2.
Through the technical scheme, d3 is larger than d2, so that when the material is conveyed from the middle section to the second section, the space is enlarged, the pressure of the material is released, and the gas in the material can escape from the material, so that the air mixed in the material is also sucked out by a vacuum-pumping system in the extruder; d4 is greater than d3, so that the air-exhausted material is compressed again when being conveyed out, so as to ensure the forming degree of the material.
The utility model discloses further set up to: the second section has a gentle transition between a portion with a diameter d3 and a portion with a diameter d 4.
Through the technical scheme, when the material is output to the discharge end of the extruder from the middle section, the material can be slowly compressed to the discharge end after being subjected to pressure release for a certain time, so that air in the material is sufficiently discharged, and the compression quality of the material is improved.
The utility model discloses further set up to: the rod body is provided with a material return prevention section at the material inlet end, the diameter of the material return prevention section is d5, and d5 is larger than d 1.
Through the technical scheme, after the material enters the extruder, the material return prevention section can play a role in stopping the material, so that the possibility that the material moves towards the direction far away from the middle section is reduced, and the conveying efficiency of the screw rod on the material is improved.
The utility model discloses further set up to: and the material return prevention section is provided with a fine thread, and the spiral direction of the fine thread is the same as that of the first material conveying piece.
Through above-mentioned technical scheme, thin screw thread can play a power that promotes towards first defeated material piece to the material along with the rotation in-process of the body of rod to the material with the returning charge is pushed out again, improves the returning charge ability.
The utility model discloses further set up to: the screw pitch of the mixing sheet is smaller than that of the first material conveying sheet.
Through above-mentioned technical scheme, the material through first defeated tablet is the heliciform and carries to mixing piece, because the pitch of mixing piece is less than the pitch of first defeated tablet this moment, the shape of material can be broken up to consequently mixing piece to do benefit to the intensive mixing material, improve the mixture degree of consistency of material.
Another object of the utility model is to provide a single screw extruder for producing low smoke and zero halogen cable material, including the foretell single screw rod that is used for producing low smoke and zero halogen cable material single screw extruder.
Through the technical scheme, the material extruded by the extruder is high in mixing uniformity and low in bubble content, and the quality of the extruded material is greatly improved.
To sum up, the utility model discloses following beneficial effect has:
1. The mixing sheet can fully mix materials, so that the mixing uniformity of the materials in the extruder is improved;
2. The material return prevention section can play a role in stopping materials, so that the possibility that the materials move towards the direction far away from the middle section is reduced, and the conveying efficiency of the screw rod on the materials is improved.
Drawings
Fig. 1 is a schematic view of the entire structure of embodiment 1.
Reference numerals: 1. a rod body; 11. a first stage; 12. a middle section; 13. a second stage; 2. a first material conveying sheet; 3. a second material conveying sheet; 4. mixing slices; 5. a material return prevention section; 6. fine threads.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: a single screw for producing a single screw extruder for low-smoke halogen-free cable materials comprises a rod body 1, and a first material conveying piece 2 and a second material conveying piece 3 which are spirally coiled on the outer edge of the rod body 1, wherein the rod body 1 is sequentially divided into a first section 11, a middle section 12 and a second section 13 from a material inlet end to a material outlet end, the length ratio of the first section 11, the middle section 12 and the second section 13 is 5:2:3, the first material conveying piece 2 is arranged on the first section 11, the second material conveying piece 3 is arranged on the second section 13, a mixing piece 4 is arranged on the middle section 12 between the first material conveying piece 2 and the second material conveying piece 3, the mixing piece 4 is provided with a plurality of mixing pieces which are spirally arranged on the outer edge of the rod body 1, the first material conveying piece 2 and the second material conveying piece 3 can play a conveying role on materials, the spiral direction of the mixing piece 4 is the same as that of the first material conveying piece 2 and the second material conveying piece 3, therefore, the mixing sheet 4 can not only play a role in conveying the materials, but also play a role in stirring and mixing the materials.
As shown in fig. 1, the rod body 1 is fixedly provided with the material return prevention section 5 at the material inlet end, the diameter of the material return prevention section 5 is d5, the diameter of the first section 11 close to the material return prevention section 5 is d1, d5 is greater than d1, the material return prevention section 5 is provided with the fine thread 6, the spiral direction of the fine thread 6 is the same as the spiral direction of the first material conveying piece 2, when the material moves towards the direction far away from the middle section 12, the end of the material return prevention section 5 can play a role in blocking the material, the fine thread 6 plays a role in pushing the material towards the first material conveying piece 2 along with the rotation process of the rod body 1, so that the material returned is pushed out again, and the material return prevention function is automatically and conveniently performed.
As shown in FIG. 1, the diameter of the first segment 11 near the material discharge end is set as d2, d2 > d1, and the two ends of the first segment 11 are gently transited, so that the first material conveying sheet 2 can gradually compress and convey the material toward the mixing sheet 4 when conveying the material. The material after compression is easier to form, the feeding amount of the extruder can be increased, and the production efficiency is improved.
As shown in fig. 1, the diameter of the middle section 12 was also set to d2, but the pitch of the kneading sheet 4 was smaller than that of the first input sheet 2, and in this example, the pitch of the kneading sheet 4 was set to one fifth of that of the first input sheet 2. The material through first defeated tablet 2 is the heliciform and carries to mixing piece 4, because the pitch of mixing piece 4 is less than the pitch of first defeated tablet 2 this moment, the shape of material can be broken up to consequently mixing piece 4 to do benefit to the intensive mixing material, improve the mixture degree of consistency of material.
as shown in fig. 1, the diameter of the second section 13 close to the middle section 12 is d3, the diameter of the second section 13 far from the middle section 12 is d4, d4 > d3, d3 < d2, the part with the diameter of d3 and the part with the diameter of d4 in the second section 13 are in smooth transition, just because d3 < d2, when the material is conveyed from the middle section 12 to the second section 13, the space between the extruder casing and the rod body 1 is enlarged, at this time, the material is released in pressure, and the gas in the material can escape from the material, so that the vacuum-pumping system in the extruder can suck and remove the air mixed in the material; then the material continues to move towards the discharge end, and because d4 is larger than d3, after the material is decompressed and exhausted for a period of time, the material is compressed again when being conveyed out, and the forming degree of the material is ensured.
Example 2: a single screw extruder for producing a low smoke zero halogen cable material, comprising example 1.
the present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. A single screw rod for producing low smoke zero halogen cable material single screw extruder which characterized in that: including the body of rod (1) and be first defeated tablet (2) and the defeated tablet (3) of second of heliciform coiling in body of rod (1) outer fringe, the body of rod (1) is equipped with mixing piece (4) between first defeated tablet (2) and the defeated tablet (3) of second, mixing piece (4) are equipped with a plurality ofly and are the heliciform in body of rod (1) outer fringe, and all mixing piece (4) are the same with the spiral direction homogeneous phase of first defeated tablet (2) and the defeated tablet of second (3).
2. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 1, characterized in that: the utility model discloses a material feeding device, including the body of rod, the body of rod (1) is divided into first section (11), middle section (12) and second section (13) in proper order by material entering end towards the direction of material discharge end, first defeated tablet (2) set up on first section (11), mixing piece (4) set up on middle section (12), second defeated tablet (3) set up on second section (13), first section (11) are close to the diameter of material entering end and establish d1, first section (11) are close to the diameter of material discharge end and establish d2, and d2 > d 1.
3. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 2, characterized in that: the diameter of the second section (13) close to the middle section (12) is set as d3, the diameter of the second section (13) far from the middle section (12) is set as d4, d4 is greater than d3, and d3 is less than d 2.
4. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 3, characterized in that: the part with the diameter d3 and the part with the diameter d4 in the second section (13) are in gradual transition.
5. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 1, characterized in that: the rod body (1) is provided with a material return prevention section (5) at the material inlet end, the diameter of the material return prevention section (5) is d5, and d5 is larger than d 1.
6. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 5, characterized in that: the material return prevention section (5) is provided with fine threads (6), and the spiral direction of the fine threads (6) is the same as that of the first material conveying piece (2).
7. The single screw for producing the single-screw extruder for low-smoke zero-halogen cable material according to claim 1, characterized in that: the screw pitch of the mixing sheet (4) is smaller than that of the first material conveying sheet (2).
8. The utility model provides a be used for producing low smoke and zero halogen cable material single screw extruder which characterized in that: a single screw comprising a single screw extruder according to any one of claims 1 to 7 for producing a low smoke zero halogen cable material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300846.5U CN209775497U (en) | 2019-03-09 | 2019-03-09 | Single-screw extruder for producing low-smoke halogen-free cable material and single screw thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920300846.5U CN209775497U (en) | 2019-03-09 | 2019-03-09 | Single-screw extruder for producing low-smoke halogen-free cable material and single screw thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209775497U true CN209775497U (en) | 2019-12-13 |
Family
ID=68797231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920300846.5U Active CN209775497U (en) | 2019-03-09 | 2019-03-09 | Single-screw extruder for producing low-smoke halogen-free cable material and single screw thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209775497U (en) |
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2019
- 2019-03-09 CN CN201920300846.5U patent/CN209775497U/en active Active
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