CN209955141U - Foaming mold for polyurethane mold foaming molding prefabricated direct-buried insulating pipe - Google Patents
Foaming mold for polyurethane mold foaming molding prefabricated direct-buried insulating pipe Download PDFInfo
- Publication number
- CN209955141U CN209955141U CN201822175808.XU CN201822175808U CN209955141U CN 209955141 U CN209955141 U CN 209955141U CN 201822175808 U CN201822175808 U CN 201822175808U CN 209955141 U CN209955141 U CN 209955141U
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- Prior art keywords
- mould
- foaming
- alarm line
- thermal insulation
- polyurethane
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005187 foaming Methods 0.000 title claims abstract description 53
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 24
- 239000004814 polyurethane Substances 0.000 title claims abstract description 24
- 238000000465 moulding Methods 0.000 title description 4
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000010097 foam moulding Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 abstract description 10
- 230000010412 perfusion Effects 0.000 abstract description 6
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Polyurethane mould foaming shaping prefabricated direct-burried insulating tube foaming mould. The traditional pouring type foaming form has poor quality stability, long polyurethane spraying forming period and consumption of polyurethane mixed liquid during spraying. The utility model comprises a perfusion lifting platform (1), a thermal insulation pipe foaming mould is arranged on the perfusion lifting platform, a working steel pipe (4) is arranged in the thermal insulation pipe foaming mould, an alarm line bracket is arranged on the working steel pipe, the interval between the adjacent alarm line brackets is 1 meter, an alarm line is arranged on the alarm line bracket, an alarm line tension meter (5) is arranged on the end surface of the thermal insulation pipe foaming mould, one end of the alarm line is fixed on the end surface of the thermal insulation pipe foaming mould, and the other end of the alarm line is fixed on the alarm line tension meter; the heat preservation pipe foaming mould comprises an upper mould (2) and a lower mould (3), and four semicircular sealing rings are arranged between the end face of the heat preservation pipe foaming mould and the working steel pipe. The utility model discloses be applied to the foaming of the prefabricated direct-burried insulating tube of polyurethane mould foam molding.
Description
The technical field is as follows:
the utility model relates to a prefabricated direct-burried insulating tube foaming mold of polyurethane mould foam molding.
Background art:
the traditional pouring type foaming form has the following main problems:
1. the density, the foam rate and the heat conductivity coefficient of the polyurethane formed by pouring are far lower than the performance indexes of the polyurethane formed by spraying. 2. The PE outer protective pipe needs multi-section PE pipes to be combined and welded, and manual welding cannot guarantee 100% that the welding quality reaches the standard and is poor in quality stability. 3. The manufacturing cycle of the PE outer protective pipe in the combined welding mode is far higher than that of a mechanical winding type outer protective pipe, particularly a pipeline with a large pipe diameter, and the efficiency is only one fourth of that of the mechanical winding type outer protective pipe. 4. In order to meet the internal pressure during polyurethane foaming, the minimum thickness of the PE outer protective pipe is far greater than the thickness of the winding type PE outer protective pipe, so that the waste of PE raw materials is caused. 5. The pouring forming process can not reach the three-in-one structure of the heat preservation pipe fitting at all, and the peeling strength of the polyurethane can not reach the standard.
The large-caliber prefabricated direct-buried heat-insulating pipe is more and more prone to spraying winding pipelines, but the spraying winding pipelines have some defects:
1. spraying equipment is not quite popular at present, and is mainly imported, and the equipment price is more than several times higher than that of domestic equipment.
The environment requirement of polyurethane spraying is harsh, a closed space needs to be established independently, and a set of strong ventilation system needs to be matched to ensure that indoor dust cannot generate dust storm.
Although the quality advantage of polyurethane spray molding is obvious, the single manufacturing period of polyurethane spray is long.
The utility model has the following contents:
in order to overcome the above-mentioned problem that prior art exists, the utility model aims at providing a prefabricated direct-burried insulating tube foaming mold of polyurethane mould foam molding.
The above purpose is realized by the following technical scheme:
the utility model provides a prefabricated direct-burried insulating tube foaming mould of polyurethane mould foam molding, its constitution includes: the device comprises a perfusion lifting platform, wherein a thermal insulation pipe foaming mould is installed on the perfusion lifting platform, a working steel pipe is placed in the thermal insulation pipe foaming mould, the lengths of parts of two ends of the working steel pipe, which are exposed out of the thermal insulation pipe foaming mould, are the same, an alarm line bracket is installed on the working steel pipe, the interval between every two adjacent alarm line brackets is 1 meter, an alarm line is installed on the alarm line bracket, an alarm line tension instrument is installed on one side end surface of the thermal insulation pipe foaming mould, one end of the alarm line is fixed on the end surface of the thermal insulation pipe foaming mould, and the other end of the alarm line is fixed on the alarm line tension instrument; the insulating tube foaming mould comprises last mould, lower mould, the terminal surface of insulating tube foaming mould with the work steel pipe between be provided with four semi-circular sealing ring, last mould be connected with rings, last mould with the lower mould pass through hydraulic lock locking, the compound die in-process, last mould with the lower mould pass through guiding hole, guide post location compound die.
The utility model has the advantages that:
the utility model discloses reduce disposable investment and the manufacturing cost of prefabricated direct-burried insulating tube equipment, improve the performance index of prefabricated direct-burried insulating tube, shorten manufacturing cycle, guarantee that life can reach 30-50 years.
The utility model discloses a polyurethane mould pressure foaming shaping shortens manufacturing cycle more than 60% than polyurethane spraying shaping. Because the high-pressure closed die is used for foaming, the polyurethane mixed liquid is hardly consumed, and 3-12% of polyurethane raw materials can be saved compared with spraying foaming. Because spraying foaming equipment is not used, the process requirements can be met by a common high-pressure foaming machine, and the one-time investment of the equipment can be greatly reduced.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a left side view of FIG. 1 (with the irrigation lifting platform omitted).
Fig. 3 is a top view of fig. 1.
The specific implementation mode is as follows:
example 1:
the utility model provides a prefabricated direct-burried insulating tube foaming mould of polyurethane mould foam molding, its constitution includes: the device comprises a perfusion lifting platform 1, wherein a thermal insulation pipe foaming mould is installed on the perfusion lifting platform, a working steel pipe 4 is placed in the thermal insulation pipe foaming mould, the lengths of parts of two ends of the working steel pipe, which are exposed out of the thermal insulation pipe foaming mould, are the same, the exposed lengths of the two ends are 200mm +/-10 mm, an alarm line bracket is installed on the working steel pipe, the interval between every two adjacent alarm line brackets is 1 meter, an alarm line is installed on the alarm line bracket, an alarm line tension instrument 5 is installed on one side end face of the thermal insulation pipe foaming mould, one end of the alarm line is fixed on the end face of the thermal insulation pipe foaming mould, and the other end of the alarm line is fixed on the alarm line tension instrument; the insulating tube foaming mould comprises last mould 2, lower mould 3, the terminal surface of insulating tube foaming mould with the work steel pipe between be provided with four semi-circular sealing ring, last mould be connected with rings 7, last mould with the lower mould pass through hydraulic lock locking, the compound die in-process, last mould with the lower mould pass through guiding hole, guide post 6 location compound die.
Example 2:
the foaming method for foaming and molding the prefabricated direct-buried heat-insulation pipe foaming mold by utilizing the polyurethane mold comprises the following steps of:
1. installing an alarm wire bracket and an alarm wire on the working steel pipe, wherein the interval between the brackets is 1 meter, the length of the alarm wire is 12.4 meters, and the two ends of the alarm wire are symmetrical;
2. the upper die is lifted through the lifting lugs, the working steel pipe provided with the alarm line is transferred into the lower die, one end of the pipeline falls down after contacting with the positioner, and the lengths of the exposed parts at the two ends are ensured to be the same;
3. hoisting the upper die to slowly fall down, and ensuring that the guide hole of the upper die is completely matched with the guide post of the lower die and then closing the die;
4. checking whether four semicircular sealing rings at two ends of the mold are effective or not, closing hydraulic locks at two sides of the mold, locking an upper mold and a lower mold, and ensuring that the mold closing force is not less than 2 kilograms per square centimeter;
5. fixing an alarm wire at one end of the die (fixing one end of the alarm wire on the upper die firstly), and fixing the alarm wire on an alarm wire tensiometer at the other end of the die, so as to ensure that the tension of the alarm wire is 8 kilograms, and checking whether the alarm wire fails;
6. adjusting the foaming angle of the lifting platform according to the model of the pipeline to be foamed, and replacing the air release plug;
7. starting a high-pressure foaming machine, mixing the four polyurethane raw materials on line through a mixing head, injecting the mixture into a mold, and adjusting the injection time according to the shape of the tube to complete foaming;
8. after the curing is finished, the hydraulic lock is opened, and the upper die is lifted by the lifting lug;
9. hoisting the foamed heat-insulating pipe for quality detection;
10. transferring to the next working procedure.
Claims (1)
1. The utility model provides a prefabricated direct-burried insulating tube foaming mould of polyurethane mould foam molding, its constitution includes: fill lift platform, characterized by: the filling lifting platform is provided with a thermal insulation pipe foaming mould, a working steel pipe is placed in the thermal insulation pipe foaming mould, the lengths of parts of two ends of the working steel pipe, which are exposed out of the thermal insulation pipe foaming mould, are the same, the working steel pipe is provided with an alarm line bracket, the interval between the adjacent alarm line brackets is 1 meter, an alarm line is arranged on the alarm line bracket, an alarm line tension meter is arranged on one side end surface of the thermal insulation pipe foaming mould, one end of the alarm line is fixed on the end surface of the thermal insulation pipe foaming mould, and the other end of the alarm line is fixed on the alarm line tension meter; the heat-insulating pipe foaming mould consists of an upper mould and a lower mould, four semicircular sealing rings are arranged between the end surface of the heat-insulating pipe foaming mould and the working steel pipe, the upper mould is connected with a hanging ring, the upper mould and the lower mould are locked through a hydraulic lock, and the upper mould and the lower mould are positioned and matched through a guide hole and a guide column in the matching process; the length of the alarm wire is 12.4 meters, the two ends are symmetrical, and the tensile force of the alarm wire is 8 kilograms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822175808.XU CN209955141U (en) | 2018-12-24 | 2018-12-24 | Foaming mold for polyurethane mold foaming molding prefabricated direct-buried insulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822175808.XU CN209955141U (en) | 2018-12-24 | 2018-12-24 | Foaming mold for polyurethane mold foaming molding prefabricated direct-buried insulating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209955141U true CN209955141U (en) | 2020-01-17 |
Family
ID=69236031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822175808.XU Expired - Fee Related CN209955141U (en) | 2018-12-24 | 2018-12-24 | Foaming mold for polyurethane mold foaming molding prefabricated direct-buried insulating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209955141U (en) |
-
2018
- 2018-12-24 CN CN201822175808.XU patent/CN209955141U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |