CN216182148U - Supercritical mould pressing foaming equipment - Google Patents
Supercritical mould pressing foaming equipment Download PDFInfo
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- CN216182148U CN216182148U CN202122537644.2U CN202122537644U CN216182148U CN 216182148 U CN216182148 U CN 216182148U CN 202122537644 U CN202122537644 U CN 202122537644U CN 216182148 U CN216182148 U CN 216182148U
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Abstract
The utility model belongs to the technical field of mould pressing equipment, and discloses supercritical mould pressing foaming equipment. The utility model discloses supercritical mould pressing foaming equipment which comprises a base, a top seat, an upright column arranged between the base and the top seat, an upper mould and a lower mould; the upper die is fixed together with the top seat through an upright post, the lower die is movably connected to the upright post, and a die cavity is formed inside the upper die and the lower die after the upper die and the lower die are assembled; the upper die and the lower die are communicated with a heating pipeline; the upper die is connected with an air charging and discharging system through an air charging and discharging pipeline to realize the air charging and discharging of the die cavity. The supercritical mould pressing foaming equipment disclosed by the utility model continuously heats the heat conducting oil through the heating pipeline, ensures the foaming temperature of the mould, innovatively introduces the air charging and exhausting system, is suitable for foaming production and experiments of general plastics, engineering plastics and novel high polymer materials, and has the production efficiency and the foaming effect far higher than those of the previous mould pressing foaming equipment.
Description
Technical Field
The utility model belongs to mould pressing equipment, and particularly relates to supercritical mould pressing foaming equipment.
Background
The polymer foaming material is a polymer/gas composite material taking a high polymer as a matrix, has the advantages of low cost, light weight, high impact strength, good heat insulation and sound insulation and the like, and is widely applied to the fields of packaging, buildings, electric appliances and the like. At present, conventional physical foaming equipment comprises twin-screw extrusion foaming equipment, kettle pressure foaming equipment, injection molding foaming equipment and the like, which can respectively produce different types of foaming particles, wherein beads are foamed by the kettle pressure foaming equipment, but water in the conventional kettle pressure bead foaming is used as a medium, so that the biodegradable material can be degraded at high temperature, and the performance of the foaming material is adversely affected, so that the problem is urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide supercritical mould pressing foaming equipment combined with an air charging and discharging system aiming at the condition that the conventional biodegradable material beads are degraded in water during foaming.
The purpose of the utility model is realized by the following technical scheme:
a supercritical mould pressing foaming device comprises a base, a top seat, a vertical column arranged between the base and the top seat, an upper mould and a lower mould; the upper die is fixed together with the top seat through an upright post, the lower die is movably connected to the upright post, and a die cavity is formed inside the upper die and the lower die after the upper die and the lower die are assembled; the upper die and the lower die are communicated with a heating pipeline to realize the temperature rise of the die cavity; the die cavity is communicated with an air charging and discharging system through an air charging and discharging pipeline, so that air charging and discharging of the die cavity are realized.
The lower die is driven by the driving device to move up and down along the upright post, the output end of the driving device is connected with a driving seat, and the upper end of the driving seat is connected with the bottom of the lower die.
The foaming device also comprises an electric cabinet for controlling the foaming operation system.
Preferably, a hook is arranged inside the upper die. The hook is preferably arranged at the middle position of the top of the inner part of the upper die and can be used for hanging expanded beads, so that the temperature difference caused by the contact of particles with the upper die and the lower die is avoided, the uniformity of the heating temperature during particle foaming is ensured, and the nonuniform particle foaming is prevented. Preferably, the length of the hook is adjusted according to actual conditions, is generally 20-100mm, and preferably 50mm, and the particles can be placed in a nylon bag and hung on the hook.
Furthermore, anti-sticking raised particles are arranged inside the upper die and the lower die. Protruding granule is used for antiseized, can effectively prevent bonding between particle and the mould, still is applicable to the spline foaming of moulding plastics simultaneously, does benefit to the drawing of patterns of spline. Preferably, raised particles may be provided at the bottom of the lower mold.
Furthermore, a Teflon anti-sticking layer is sprayed inside the die cavity.
The utility model is convenient for bead demoulding through a plurality of anti-sticking designs.
In order to ensure the sealing performance of the die cavity after die assembly, a circle of sealing gasket is arranged at the buckling position of the upper die and the lower die. Furthermore, the sealing strips with annular bulges are distributed on the upper surface and the lower surface of the sealing cushion.
Optionally, a circle of sealing press ring is arranged beside the sealing gasket, and the sealing press ring is preferably an elastic sealing press ring.
The heating pipeline is connected with oil furnace heat conducting oil to ensure the foaming temperature of the die cavity. The heat conducting oil is heated, the temperature is raised, the thermal stability is good, and the particle production efficiency is high.
Further, the charging and discharging system comprises a gas cylinder, a charging booster pump station and a compressed air machine, wherein the compressed air machine and the gas cylinder are respectively connected with the charging booster pump station, and the charging booster pump station and the compressed air machine are both communicated with a charging and discharging pipeline; the compressed air machine drives gas in the gas cylinder to enter the gas cylinder for pressurization through the gas charging booster pump station, and is used for exhausting and releasing pressure at the same time. Preferably, the exhaust pipeline is further provided with a manual exhaust device, and the manual exhaust device can also automatically exhaust air by controlling an electric cabinet of the foaming operation system.
The exhaust pipeline is provided with a special silencer, and the special silencer is connected by a flange and a sealing element.
The pressure relief rate of the air charging and exhausting system is 5-20 MPa.s < -1 >, the upper die automatically pops open after the pressure in the die cavity reaches 1-2MPa, the maximum pressure in the die cavity is 25MPa, and the system has an automatic pressure supplementing function
Preferably, a protective cover is arranged outside the foaming device, so that the beads can be prevented from being exploded after pressure relief, and collection of foam particles of the beads is facilitated.
The components of the utility model not shown or their connections may be made using any known technique.
Has the advantages that: compared with the prior art, the supercritical mould pressing foaming equipment disclosed by the utility model continuously heats through the heating pipeline, ensures the foaming temperature of the mould, innovatively introduces the air charging and exhausting system, is suitable for foaming production and experiments of general plastics, engineering plastics and novel high polymer materials, and has far higher production efficiency and foaming effect than the previous mould pressing foaming equipment.
Drawings
FIG. 1 is a front view of a unit assembly of a supercritical molding foaming apparatus;
FIG. 2 is a side view of an assembly of a supercritical molded foam plant;
FIG. 3 is a schematic cross-sectional view of the mold;
fig. 4 is a schematic view of the connection structure and principle of the inflation and exhaust system.
In the drawing, a base (1), a top seat (2), a stand column (3), an upper die (4), a lower die (5), a die cavity (6), a heating pipeline (7), an air charging and exhausting pipeline (8), a driving device (9), a driving seat (10), an electric cabinet (11), a hook (12), a sealing gasket (13), an air charging and exhausting system (14), an air charging booster pump station (15), an air exhausting valve group (16), a compressed air pressure display meter (17), a silencer (18), a protective cover (19), an air bottle (20) and a compressed air machine (21).
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the examples described herein are for purposes of illustration only and are not intended to be limiting.
Fig. 1 and 2 show a supercritical mold-pressing foaming apparatus, which comprises a base 1, a top base 2, a column 3 arranged between the base 1 and the top base 2, an upper mold 4, and a lower mold 5, wherein the upper mold 4 is fixedly connected with the top base and the column, and the lower mold 5 is movably connected with the column. The lower die 5 is driven by the driving device 9 to move up and down along the upright post 3, the driving device 9 is a hydraulic cylinder piston driving device, the output end of a hydraulic cylinder is connected with a driving seat 10, the upper end of the driving seat 10 is fixedly connected with the bottom of the lower die, and the lower die 5 is driven by the hydraulic cylinder to move up and down along the upright post.
The upper die 4 and the lower die 5 are matched to form a die cavity 6, as shown in fig. 3, in order to ensure the foaming temperature, heating pipe connectors are arranged on the upper die 4 and the lower die 5 and connected with a heating pipeline 7, the heating pipeline 7 is connected with oil furnace heat conducting oil, and the temperature in the die cavity after the die is matched is ensured by heating the oil furnace heat conducting oil.
The upper die 5 is also provided with an air charging and exhausting pipeline interface for connecting an air charging and exhausting pipeline 8 and for realizing air charging and exhausting of the die cavity 6, the air charging and exhausting pipeline 8 is connected to an air charging and exhausting system 14, as shown in fig. 4, the air charging and exhausting system 14 is composed of an air charging and boosting pump station 15, a compressed air machine 21 and an air bottle 20, the air charging and boosting pump station 15 is an air inlet and boosting device, the air exhausting pipeline is connected with the compressed air machine 21 and is provided with a manual air exhausting device, and the air exhausting can be automatically exhausted by controlling an electric cabinet of a foaming operation system, the air exhausting pipeline is provided with a silencer 18, and the silencer 18 is connected by a flange and a sealing piece.
Referring to fig. 4, a pressure relief valve set 16 and a pressure display gauge 17 are further disposed on the exhaust pipeline of the air compressor 21 connected to the mold cavity. When the pressure relief system is used, the pressure relief rate is 5-20 MPa.s < -1 >, the lower die automatically bounces open after the specified pressure in the die cavity reaches 1-2MPa, the maximum pressure in the die cavity is 25MPa, and meanwhile, the system has an automatic pressure compensation function.
Referring to fig. 3, the hooks 12 are disposed inside the upper mold 5 and disposed at the middle position of the top of the upper mold 5 for suspending the expanded beads, so as to avoid the temperature difference caused by the particles contacting the upper mold and the lower mold, ensure the uniformity of the heated temperature during particle expansion, and prevent non-uniform particle expansion. The length of the hook 12 is adjusted according to the actual situation, generally 20-100mm, preferably 50mm, and the particles are placed in a nylon bag and hung on the hook. Go up mould 4 and 5 insides of bed die and still be equipped with antiseized protruding granule, 6 inner walls of die cavity spraying have the antiseized layer of teflon. A circle of sealing gasket 13 is arranged at the buckling position of the upper die 4 and the lower die 5, and sealing strips provided with protrusions are distributed on the upper surface and the lower surface of the sealing gasket 13. And a circle of sealing press ring is arranged beside the sealing gasket 13.
With reference to fig. 1 and 2, the apparatus further includes an electric cabinet 11, important instructions in the particle foaming process, such as setting of foaming temperature, foaming time, gas pressure, mold opening gas pressure relief pressure, and the like, are set by the electric cabinet, and the apparatus automatically completes the foaming process. The outside of the foaming device is also provided with a protective cover 19.
When the foaming equipment works, the temperature of the upper die 4 and the lower die 5 is controlled by oil furnace heat conducting oil, the highest heating temperature is 250 ℃, the average temperature rising speed is 1.5 ℃/min, the die closing speed of the lower die 5 is 30mm/s, the die opening speed is 400mm/s, and the die closing pressure is 18.8MPa during working.
The inflation and exhaust system is composed of an inflation booster pump station 15, a compressed air machine 21 and an air bottle 20, the compressed air machine 21 and the air bottle 20 are respectively connected with the inflation booster pump station 15, the compressed air machine 21 drives foaming gas in the air bottle 20 to enter air and boost through the inflation booster pump station 15 so as to achieve the required foaming pressure, and the compressed air machine 21 is used for simultaneously exhausting and relieving pressure so as to achieve the pressure-relief foaming effect. And (3) inflating within 3min, finishing the pressure relief rate of 5-20MPa s < -1 >, finishing the exhaust within 4s, quickly opening the die and exhausting, and finishing the quick pressure relief to obtain the microporous foam.
Claims (10)
1. A supercritical die pressing foaming device is characterized by comprising a base (1), a top seat (2), a stand column (3) arranged between the base (1) and the top seat (2), an upper die (4) and a lower die (5); the upper die (4) is fixed with the top seat (2) through the upright post (3), the lower die (5) is movably connected to the upright post (3), and a die cavity (6) is formed in the upper die (4) and the lower die (5) after the upper die and the lower die are matched; the upper die (4) and the lower die (5) are communicated with a heating pipeline (7) to realize the temperature rise of the die cavity; the die cavity (6) is communicated with an air charging and discharging system (14) through an air charging and discharging pipeline (8) to realize the air charging and discharging of the die cavity.
2. The supercritical die-pressing foaming apparatus according to claim 1, wherein the lower die (5) is driven by a driving device (9) to move up and down along the upright column (3), the output end of the driving device (9) is connected with a driving seat (10), and the upper end of the driving seat (10) is connected with the bottom of the lower die.
3. Supercritical die-pressing foaming device according to claim 1, characterized by an electrical cabinet (11) for controlling the foaming operation system.
4. Supercritical die-pressing foaming apparatus according to claim 1 characterized in that the upper die (4) is internally provided with hooks (12); anti-sticking raised particles are arranged inside the upper die (4) and the lower die (5).
5. Supercritical die-pressing foaming apparatus according to claim 1, characterized in that the inside of the die cavity (6) is sprayed with a teflon anti-sticking layer.
6. The supercritical die pressing foaming equipment according to claim 1, wherein a circle of sealing gasket (13) is arranged at the buckling position of the upper die (4) and the lower die (5), and sealing strips with annular protrusions are distributed on the upper surface and the lower surface of the sealing gasket (13).
7. The supercritical die pressing foaming device according to claim 6 is characterized in that a ring of sealing press ring is arranged beside the sealing gasket (13).
8. The supercritical die pressing foaming equipment according to claim 1, wherein the heating pipeline (7) is connected with oil furnace heat conducting oil to raise temperature so as to ensure the foaming temperature of the die cavity.
9. The supercritical die pressing foaming equipment according to claim 1, wherein the inflation and exhaust system (14) comprises an air bottle (20), an inflation booster pump station (15) and a compressed air machine (21), the compressed air machine (21) and the air bottle (20) are respectively connected with the inflation booster pump station (15), and the inflation booster pump station (15) and the compressed air machine (21) are both communicated with the inflation and exhaust pipeline (8); the compressed air machine (21) drives gas in the gas cylinder (20) to enter the gas and be pressurized through the gas charging booster pump station (15), and the compressed air machine (21) is used for exhausting and releasing pressure at the same time.
10. Supercritical die pressing foaming apparatus according to claim 1, characterized in that the foaming apparatus is externally provided with a protective cover (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122537644.2U CN216182148U (en) | 2021-10-21 | 2021-10-21 | Supercritical mould pressing foaming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122537644.2U CN216182148U (en) | 2021-10-21 | 2021-10-21 | Supercritical mould pressing foaming equipment |
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| Publication Number | Publication Date |
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| CN216182148U true CN216182148U (en) | 2022-04-05 |
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| CN202122537644.2U Active CN216182148U (en) | 2021-10-21 | 2021-10-21 | Supercritical mould pressing foaming equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953321A (en) * | 2022-05-25 | 2022-08-30 | 东莞海博斯新材料科技有限公司 | Preparation method of efficient environment-friendly supercritical die-pressing foaming elastomer |
-
2021
- 2021-10-21 CN CN202122537644.2U patent/CN216182148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953321A (en) * | 2022-05-25 | 2022-08-30 | 东莞海博斯新材料科技有限公司 | Preparation method of efficient environment-friendly supercritical die-pressing foaming elastomer |
| CN114953321B (en) * | 2022-05-25 | 2023-03-14 | 东莞海博斯新材料科技有限公司 | Preparation method of efficient environment-friendly supercritical die-pressing foaming elastomer |
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