CN218453190U - Expansion die for biaxial orientation polyvinyl chloride pipe - Google Patents
Expansion die for biaxial orientation polyvinyl chloride pipe Download PDFInfo
- Publication number
- CN218453190U CN218453190U CN202222706901.5U CN202222706901U CN218453190U CN 218453190 U CN218453190 U CN 218453190U CN 202222706901 U CN202222706901 U CN 202222706901U CN 218453190 U CN218453190 U CN 218453190U
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- section
- expansion
- pull rod
- polyvinyl chloride
- sizing
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- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 20
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 20
- 238000004513 sizing Methods 0.000 claims abstract description 23
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
An expansion die for a biaxial orientation polyvinyl chloride pipe relates to the technical field of pipe dies; the device comprises a guide section, a step expansion section, a sizing section, a pull rod and a nut; the pull rod sequentially penetrates through the guide section, the step expansion section and the sizing section, and two ends of the pull rod are fixed through nuts respectively; a plurality of vent grooves are uniformly distributed on the conical surface of the stepped expansion section and the circumferential surface of the sizing section, and a plurality of first air holes are uniformly formed in the vent grooves; the pull rod is of a hollow pipe structure, and second air holes are formed in the side wall of the pull rod, located on the step expansion section and the sizing section. An expansion mould of biaxial orientation polyvinyl chloride tubular product, the reducible wall thickness of tubular product than PVC-U tubular product of production 35% -40%, practiced thrift the material greatly, the cost is reduced has improved production efficiency greatly, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low grade.
Description
Technical Field
The utility model relates to a tubular product mould technical field, concretely relates to extension mould of biax orientation polyvinyl chloride tubular product.
Background
The biaxial orientation polyvinyl chloride pipe is manufactured by a special orientation processing process, the processing process is to perform annular stretching and axial stretching on the PVC-U pipe produced by an extrusion method, so that PVC long-chain molecules in the pipe are regularly arranged in a biaxial direction, a novel PVC pipe with high strength, high toughness, high impact resistance and fatigue resistance is obtained, and the performance of the novel PVC pipe is far superior to that of a common PVC-U pipe.
The domestic biaxially oriented polyvinyl chloride pipe is still in the development starting stage, and an expansion mould matched with the biaxially oriented polyvinyl chloride pipe must be developed to obtain the biaxially oriented polyvinyl chloride pipe with excellent performance.
Disclosure of Invention
An object of the utility model is to provide a simple structure, reasonable in design, convenient to use's biax orientation polyvinyl chloride tubular product's expansion mould to prior art's defect and not enough.
In order to achieve the purpose, the utility model adopts the technical proposal that: the device comprises a guide section, a step expansion section, a sizing section, a pull rod and a nut; the pull rod sequentially penetrates through the guide section, the step expansion section and the sizing section, and two ends of the pull rod are fixed through nuts respectively; a plurality of vent grooves are uniformly distributed on the conical surface of the stepped expansion section and the circumferential surface of the sizing section, and a plurality of first air holes are uniformly arranged in the vent grooves; the pull rod is of a hollow pipe structure, and second air holes are formed in the side wall of the pull rod, located in the step expansion section and the sizing section.
Further, the diameter of the first air hole is 2-5.2mm.
Further, the connecting part of the guide section, the step expanding section and the sizing section is in smooth transition.
Further, the divergence angle α of each of the step divergence sections is less than 30 °.
Further, the length of the sizing section is 100-1200 mm.
After the structure of the oil adding device is adopted, the utility model discloses the beneficial effect who produces does: an expansion mould of biax orientation polyvinyl chloride tubular product, the reducible wall thickness of tubular product of production than PVC-U tubular product 35% -40%, practiced thrift the material greatly, the cost is reduced has improved production efficiency greatly, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low.
Drawings
Fig. 1 is a structural view of the present invention.
Description of the reference numerals:
the device comprises a guide section 1, a stepped expansion section 2, a sizing section 3, a pull rod 4, a nut 5, a vent groove 6 and a first air hole 7.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Referring to fig. 1, the following technical solutions are adopted in the present embodiment: the device comprises a guide section 1, a step expansion section 2, a sizing section 3, a pull rod 4 and a nut 5; the pull rod 4 sequentially penetrates through the guide section 1, the step expansion section 2 and the sizing section 3, two ends of the pull rod are respectively fixed through nuts 5, and the joints among the three sections are in smooth transition; a plurality of vent grooves 6 are uniformly distributed on the conical surface of the stepped expansion section 2 and the circumferential surface of the diameter fixing section 3, and a plurality of first air holes 7 with the diameters of 2 to 5.2mm are uniformly arranged in the vent grooves 6; the pull rod 4 be central hollow tube structure, and be located and be provided with the second gas pocket on the pull rod lateral wall in ladder expansion section 2 and the sizing section 3, this second gas pocket can lead to outside compressed air to expansion mould inner chamber, and compressed air can only discharge through the first gas pocket on the circumference surface of the conical surface of mould ladder expansion section 2 and sizing section 3.
The divergent angle alpha of each section of the step divergent section 2 is less than 30 degrees.
The length of the sizing section 3 is 100-1200 mm.
When the specific embodiment is operated, the expansion mould of the specific embodiment is placed between a heating oven and a cooling spray box, a multi-crawler-type tractor is arranged behind the spray box, extruded PVC-U (polyvinyl chloride) blank tubes are kept at a certain speed under the action of multi-crawler-type traction under the temperature condition between the vitrification temperature and the melting temperature, and sequentially pass through a guide section 1, a step expansion section 2 and a sizing section 3 of the expansion mould, so that the PVC-U (thick stock blank) tubes are expanded in the circumferential direction and the axial direction to realize biaxial orientation, and then are cooled and shaped to form the PVC-O tubes.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An expansion mould of biaxial orientation polyvinyl chloride tubular product which characterized in that: the device comprises a guide section, a step expansion section, a sizing section, a pull rod and a nut; the pull rod sequentially penetrates through the guide section, the stepped expansion section and the sizing section, and two ends of the pull rod are fixed through nuts respectively; a plurality of vent grooves are uniformly distributed on the conical surface of the stepped expansion section and the circumferential surface of the sizing section, and a plurality of first air holes are uniformly arranged in the vent grooves; the pull rod is of a central hollow pipe structure, and a second air hole is formed in the side wall of the pull rod, which is located in the step expansion section and the sizing section.
2. The expansion die for biaxially oriented polyvinyl chloride pipes according to claim 1, wherein: the diameter of the first air hole is 2-5.2mm.
3. The expansion die for biaxially oriented polyvinyl chloride pipe according to claim 1, wherein: the connecting part of the guide section, the step expansion section and the sizing section is in smooth transition.
4. The expansion die for biaxially oriented polyvinyl chloride pipes according to claim 1, wherein: the divergent angle alpha of each section of the stepped divergent section is less than 30 degrees.
5. The expansion die for biaxially oriented polyvinyl chloride pipe according to claim 1, wherein: the length of the sizing section is 100-1200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222706901.5U CN218453190U (en) | 2022-10-14 | 2022-10-14 | Expansion die for biaxial orientation polyvinyl chloride pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222706901.5U CN218453190U (en) | 2022-10-14 | 2022-10-14 | Expansion die for biaxial orientation polyvinyl chloride pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218453190U true CN218453190U (en) | 2023-02-07 |
Family
ID=85127220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222706901.5U Active CN218453190U (en) | 2022-10-14 | 2022-10-14 | Expansion die for biaxial orientation polyvinyl chloride pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218453190U (en) |
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2022
- 2022-10-14 CN CN202222706901.5U patent/CN218453190U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 318, North 2nd Ring Road, Zhangjiagang Economic and Technological Development Zone, Suzhou, Jiangsu 215600 Patentee after: Jiangsu Bell Machinery Co.,Ltd. Country or region after: China Address before: 215600 east side of Gangcheng Avenue, Zhangjiagang Economic and Technological Development Zone, Suzhou City, Jiangsu Province (bell machinery) Patentee before: JIANGSU BEIER MACHINERY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |