CN113752584B - Dicyclopentadiene forming equipment and associated control system thereof - Google Patents
Dicyclopentadiene forming equipment and associated control system thereof Download PDFInfo
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- CN113752584B CN113752584B CN202111008544.9A CN202111008544A CN113752584B CN 113752584 B CN113752584 B CN 113752584B CN 202111008544 A CN202111008544 A CN 202111008544A CN 113752584 B CN113752584 B CN 113752584B
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- valve
- forming die
- dicyclopentadiene
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- forming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
Abstract
The invention relates to the technical field of chemical material forming and processing, in particular to dicyclopentadiene forming equipment and a combined control system thereof; after the die assembly of the product die is completed, a vacuum extraction valve is opened, air in a cavity of the forming die is completely extracted, nitrogen is filled, product feed liquid is injected into the cavity of the forming die, an exhaust control valve is opened to discharge redundant nitrogen, materials in the cavity of the forming die are fully filled, when the feed liquid enters a gas collecting flash tank, a feed liquid sensor responds, a controller body is instructed to stop feeding, and a switch valve at the side edge of an exhaust control pipe is closed after the feeding is completed; opening an inflation valve, and inflating and pressurizing the inflation tube, so as to ensure the density and quality of the product in the curing molding process; and finally, maintaining the pressure for 120 seconds, and opening the die to take out the product so as to perfect the curing and forming process and ensure the quality of the product, thereby improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of chemical material forming and processing, in particular to dicyclopentadiene forming equipment and a combined control system thereof.
Background
The poly-bicyclo-dicyclopentadiene (PDCPD RIM) is molded under many conditions, the setting of the placement angle, the material injection mode, the pressure and the temperature control, the exhaust or back pressure setting of the mold body are all required to be completely controlled, and the oxygen molecules in the cavity of the mold body are required to be removed to affect the surface of the product, so that the perfect defect-free product can be produced.
The existing dicyclopentadiene forming equipment and the combined control system cannot completely remove air in the cavity of the die and oxygen molecules harmful to products, so that the quality of the products is affected.
Disclosure of Invention
The invention aims to provide dicyclopentadiene forming equipment and a combined control system thereof, and aims to solve the technical problems that the existing dicyclopentadiene forming equipment and the combined control system thereof in the prior art cannot completely remove air and oxygen molecules harmful to products in a die cavity and influence the quality of the products.
In order to achieve the above purpose, the dicyclopentadiene forming device and the associated control system thereof are adopted in the invention, the dicyclopentadiene forming device comprises a forming die, a forming die cavity, a feeding pipe, a nitrogen inlet, a nitrogen control valve, a gas collecting flash tank, an exhaust pipeline, a material detection sensor and a die cavity control assembly, wherein the forming die cavity is arranged in the forming die, the feeding pipe is fixedly connected with the forming die and is positioned below the forming die, the nitrogen inlet is arranged at the side edge of the feeding pipe, the nitrogen control valve is arranged at the side edge of the nitrogen inlet, the gas collecting flash tank is arranged above a forming die cavity, one end of the exhaust pipeline penetrates through the forming die and is communicated with the gas collecting flash tank, the other end of the exhaust pipeline is fixedly connected with the die cavity control assembly, and the material detection sensor is arranged above the gas collecting flash tank;
the die cavity control assembly comprises a controller body, an inflation tube, an inflation valve, a vacuum exhaust tube, a vacuum exhaust valve, a pressure gauge, an exhaust control tube, an exhaust control valve and a switch valve, wherein one end of the inflation tube penetrates through the controller body and is communicated with the pressure regulating cavity, the other end of the inflation tube is provided with the inflation valve, the controller body is fixedly connected with the forming die and is located above the forming die, the pressure regulating cavity and an isolation cavity are formed in the controller body, one end of the vacuum exhaust tube penetrates through the controller body and is communicated with the pressure regulating cavity, the vacuum exhaust valve is arranged at the other end of the vacuum exhaust tube, the exhaust control tube is fixedly connected with the controller body and is located at the side edge of the controller body, the exhaust control valve and the switch valve are both arranged at the side edge of the exhaust control tube, and the pressure gauge is arranged above the exhaust control tube.
After the die assembly of the product die is completed, the vacuum extraction valve is opened, air in the cavity of the forming die is completely extracted, then nitrogen is filled, product feed liquid is injected into the cavity of the forming die, when the pressure in the cavity of the forming die exceeds 0.03mpa, the exhaust control valve is opened to discharge redundant nitrogen, when the material in the cavity of the forming die is filled, and when the feed liquid enters the gas collecting flash tank, the feed liquid sensor arranged above the gas collecting flash tank responds, the controller body is instructed to stop feeding, and the switch valve at the side edge of the exhaust control pipe is closed after the feeding is completed; opening the inflation valve, inflating and pressurizing the inflation tube, and inflating the pressure value in the controller body to 0.1-0.3mpa so as to ensure the density quality of the product in the curing molding process; and finally, maintaining the pressure for 120 seconds, and opening the die to take out the product so as to perfect the curing and forming process and ensure the quality of the product, thereby improving the production efficiency.
The die cavity control assembly further comprises a liquid-gas separator, wherein the liquid-gas separator is arranged above the exhaust control pipe and is positioned on the side edge of the switch valve.
The liquid-gas separator is arranged above the exhaust control pipe, and when raw materials are injected into the cavity of the forming die, the liquid-gas separation can carry out liquid-gas separation on redundant raw materials, so that the product quality is improved.
The die cavity control assembly further comprises a pressure sensor, wherein the pressure sensor is fixedly connected with the controller body and is located above the inflation tube.
Can sense the inflation pressure value thereof.
The dicyclopentadiene forming equipment further comprises an injection gun head, wherein the injection gun head is fixedly connected with the feeding pipe and is positioned at the side edge of the feeding pipe.
The injection gun head is arranged at the side edge of the feeding pipe, so that raw materials can be conveniently injected into the feeding pipe.
The invention also provides a dicyclopentadiene combined control system, which further comprises a PLC control center, wherein one end of the PLC control center is respectively connected with the inflation valve, the pressure sensor, the vacuum extraction valve, the liquid-gas separator, the switching valve and the exhaust control valve, and the other end of the PLC control center is respectively connected with the nitrogen control valve and the injection gun head.
The PLC control center can be controlled in real time, and is very convenient.
The dicyclopentadiene allies oneself with accuse system still includes the seal groove, the seal groove set up in the inside lateral wall of the controller body.
The seal groove is arranged on the inner side wall of the controller body, so that the sealing effect on the inner part of the controller body can be enhanced, and the production efficiency can be improved.
According to the dicyclopentadiene forming equipment and the combined control system thereof, after the die assembly of a product die is completed, the temperature of the die reaches 30-90 degrees, the vacuum extraction valve in the die cavity control assembly is opened, the vacuum pump pumps air (the vacuum degree is 376 millimeters of mercury) in the cavity of the forming die through the vacuum extraction pipe arranged below the vacuum extraction valve, then the nitrogen control valve arranged at the lower end of the forming die is opened, nitrogen starts to be filled, and the pressure value of the nitrogen is kept at 0.03mpa; finally, a material injection pump injects product material liquid into the forming die cavity arranged in the forming die cavity through the material inlet pipe, nitrogen gas at the upper end is increased when the material liquid enters the forming die cavity from the material inlet pipe at the lower end, and when the pressure in the forming die cavity exceeds 0.03mpa, the exhaust control valve is opened, and redundant nitrogen gas is discharged from the exhaust control pipe, so that the pressure value in the forming die cavity is kept at 0.03mpa; when the material in the cavity of the forming die is filled, and the material liquid enters the gas collecting flash tank, the material liquid sensor arranged above the gas collecting flash tank responds to instruct the controller body to stop material injection, and the switch valve at the side edge of the exhaust control pipe is closed after material injection is completed; opening the inflation valve, inflating and pressurizing the inflation tube, and inflating the pressure value in the controller body to 0.1-0.3mpa so as to ensure the density quality of the product in the curing molding process; and finally, maintaining the pressure for 120 seconds, and opening the die to take out the product so as to perfect the curing and forming process and ensure the quality of the product.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a dicyclopentadiene forming apparatus and a control system thereof according to the present invention.
Fig. 2 is an enlarged view of a portion of fig. 1 in accordance with the present invention.
Fig. 3 is a circuit diagram of the PLC control hub of the present invention.
The device comprises a 1-forming die, a 2-forming die cavity, a 3-feeding pipe, a 4-nitrogen inlet, a 5-nitrogen control valve, a 6-gas collecting flash tank, a 7-exhaust pipeline, an 8-material detection sensor, a 9-die cavity control assembly, a 91-controller body, a 92-gas charging pipe, a 93-gas charging valve, a 94-vacuum gas suction pipe, a 95-vacuum gas suction valve, a 96-pressure gauge, a 97-gas discharge control pipe, a 98-gas discharge control valve, a 99-switching valve, a 10-pressure regulating cavity, a 101-isolation cavity, a 102-gas-liquid separator, a 103-pressure sensor, a 104-injection gun head, a 105-PLC control center, a 106-sealing groove, a 107-flash tank and a 108-sealing ring.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, the present invention provides a dicyclopentadiene forming apparatus, which includes a forming mold 1, a forming mold cavity 2, a feed pipe 3, a nitrogen inlet 4, a nitrogen control valve 5, a gas collecting flash tank 6, an exhaust pipe 7, a material detecting sensor 8 and a mold cavity control component 9, wherein the forming mold cavity 2 is disposed inside the forming mold 1, the feed pipe 3 is fixedly connected with the forming mold 1 and is located below the forming mold 1, the nitrogen inlet 4 is disposed at a side edge of the feed pipe 3, the nitrogen control valve 5 is disposed at a side edge of the nitrogen inlet 4, the gas collecting flash tank 6 is disposed above a cavity of the forming mold 1, one end of the exhaust pipe 7 penetrates through the forming mold 1 and is communicated with the gas collecting flash tank 6, the other end of the exhaust pipe 7 is fixedly connected with the mold cavity control component 9, and the material detecting sensor 8 is disposed above the gas collecting flash tank 6;
the die cavity control assembly 9 comprises a controller 91, an inflation tube 92, an inflation valve 93, a vacuum exhaust tube 94, a vacuum exhaust valve 95, a pressure gauge 96, an exhaust control tube 97, an exhaust control valve 98 and a switch valve 99, wherein one end of the inflation tube 92 penetrates through the controller 91 and is communicated with the pressure regulating cavity 10, the other end of the inflation tube 92 is provided with the inflation valve 93, the controller 91 is fixedly connected with the forming die 1 and is located above the forming die 1, the pressure regulating cavity 10 and an isolation cavity 101 are arranged in the controller 91, one end of the vacuum exhaust tube 94 penetrates through the controller 91 and is communicated with the pressure regulating cavity 10, the vacuum exhaust valve 95 is arranged at the other end of the vacuum exhaust tube 94, the exhaust control tube 97 is fixedly connected with the controller 91 and is located at the side edge of the controller 91, the exhaust control valve 98 and the switch valve 99 are both arranged at the side edge of the exhaust control tube 97, and the pressure gauge 96 is arranged above the pressure gauge 97.
In this embodiment, the forming mold 1 has the forming mold cavity 2 therein, the feed pipe 3 is disposed below the forming mold 1, the nitrogen inlet 4 is disposed at a side of the feed pipe 3, the nitrogen control valve 5 is disposed at a side of the nitrogen inlet 4, the gas collecting flash tank 6 is disposed inside the forming mold cavity 2, the material detection sensor 8 is disposed above the gas collecting flash tank 6, the air exhaust pipe 7 is disposed above the forming mold 1, the mold cavity control assembly 9 is disposed above the forming mold 1, after the mold is clamped, the temperature reaches to be set to 30-90 degrees, the vacuum extraction valve 95 in the mold cavity control assembly 9 is opened, the vacuum pump is used for completely pumping air (vacuum degree is 376 mm column) in the forming mold cavity 2 through the vacuum extraction pipe 94 disposed below the vacuum extraction valve 95, then, the lower end of the forming mold 1 is disposed above the vacuum extraction pipe 5 is opened, and the nitrogen gas filling valve is opened, and the nitrogen filling valve is started to be at a pressure of 0.03 a; finally, a product feed liquid is injected into the forming die cavity 2 arranged in the forming die 1 through the feed pipe 3 by the feed pump, the feed liquid enters the forming die cavity 2 from the feed pipe 3 at the lower end, the nitrogen pressure at the upper end is increased, when the pressure in the forming die cavity 2 exceeds 0.03mpa, the exhaust control valve 98 is opened, and redundant nitrogen is discharged from the exhaust control pipe 97, so that the pressure value in the forming die cavity 2 is kept at 0.03mpa; when the material in the molding die cavity 2 is filled, and the material liquid enters the gas collecting flash tank 6, the material liquid sensor 8 arranged above the gas collecting flash tank 6 responds, the controller 91 is instructed to stop material injection, and the switch valve 99 at the side edge of the exhaust control pipe 97 is closed after material injection is completed; opening the inflation valve 93, inflating and pressurizing the inflation tube 92, and inflating the pressure value inside the controller 91 to 0.1-0.3mpa so as to ensure the density quality of the product in curing molding; and finally, maintaining the pressure for 120 seconds, and opening the die to take out the product so as to perfect the curing and forming process and ensure the quality of the product.
Further, the mold cavity control assembly 9 further includes a liquid-gas separator 102, where the liquid-gas separator 102 is disposed above the exhaust control pipe 97 and is located at a side of the on-off valve 99.
In the present embodiment, the liquid-gas separator 102 is disposed above the exhaust control pipe 97, and when the raw material is injected into the molding die cavity 2, the liquid-gas separation can separate the excess raw material, thereby improving the quality of the product.
Further, the die cavity control assembly 9 further includes a pressure sensor 103, where the pressure sensor 103 is fixedly connected to the controller 91 and is located above the air tube 92.
In this embodiment, the pressure sensor 103 is disposed on a side of the controller 91, and when the controller is inflated, the pressure sensor 103 can sense the air in real time, which is very convenient.
Further, the dicyclopentadiene forming device further comprises an injection gun head 104, and the injection gun head 104 is fixedly connected with the feeding pipe 3 and is located at the side edge of the feeding pipe 3.
In this embodiment, the injection gun head 104 is disposed below the feed pipe 3, so that the injection gun head 104 can be used to fill the raw material when the raw material injection is required.
The invention further comprises a dicyclopentadiene combined control system, which comprises the dicyclopentadiene forming equipment and a PLC control center 105, wherein one end of the PLC control center 105 is respectively connected with the inflation valve 93, the pressure sensor 103, the vacuum extraction valve 95, the liquid-gas separator 102, the switch valve 99 and the exhaust control valve 98, and the other end of the PLC control center 105 is respectively connected with the nitrogen control valve 5 and the injection gun head 104.
In this embodiment, one end of the PLC control center 105 is connected to the nitrogen control valve 5 and the injection gun head 104, and the raw materials are injected into the molding die cavity 2 through the injection gun head 104, then the nitrogen control valve 5 is opened to inject nitrogen, and finally the controller 91 above the molding die 1 is controlled.
Further, the dicyclopentadiene molding system further includes a sealing groove 106, and the sealing groove 106 is disposed on an inner sidewall of the controller body 91.
In the present embodiment, the seal groove 106 is provided in the inner side wall of the controller body 91, so that the sealing effect on the inside of the controller body 91 can be enhanced, and the production efficiency can be improved.
Further, the dicyclopentadiene forming device further comprises two overflow tanks 107, and the two overflow tanks 107 are respectively and oppositely arranged at two side edges of the gas collecting overflow tank 6.
In this embodiment, the flash tank 107 is provided at both sides of the gas collection flash tank 6, and can assist the gas collection flash tank 6.
Further, the dicyclopentadiene forming device further comprises a sealing ring 108, and the sealing ring 108 is fixedly connected with the forming die 1 and is positioned on the inner side wall of the forming die 1.
In this embodiment, the seal ring 108 is disposed on the inner sidewall of the molding die 1, so as to assist the molding die 1, thereby enhancing the sealing effect, improving the product quality and the production efficiency.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (6)
1. A dicyclopentadiene forming device is characterized in that,
the dicyclopentadiene forming device comprises a forming die, a forming die cavity, a feeding pipe, a nitrogen inlet, a nitrogen control valve, a gas collecting flash tank, an exhaust pipeline, a material detection sensor and a die cavity control assembly, wherein the forming die cavity is arranged in the forming die, the feeding pipe is fixedly connected with the forming die and is positioned below the forming die, the nitrogen inlet is arranged at the side edge of the feeding pipe, the nitrogen control valve is arranged at the side edge of the nitrogen inlet, the gas collecting flash tank is arranged above the forming die cavity, one end of the exhaust pipeline penetrates through the forming die and is communicated with the gas collecting flash tank, the other end of the exhaust pipeline is fixedly connected with the die cavity control assembly, and the material detection sensor is arranged above the gas collecting flash tank;
the die cavity control assembly comprises a controller body, an inflation tube, an inflation valve, a vacuum exhaust tube, a vacuum exhaust valve, a pressure gauge, an exhaust control tube, an exhaust control valve and a switch valve, wherein a pressure regulating cavity and an isolation cavity are formed in the controller body;
after the die assembly of the product die is completed, the temperature of the die reaches to 30-90 degrees, the vacuum extraction valve in the die cavity control assembly is opened, the vacuum pump pumps air in the cavity of the forming die through the vacuum extraction pipe arranged below the vacuum extraction valve, then the nitrogen control valve arranged at the lower end of the forming die is opened, nitrogen starts to be filled, and the pressure value of the nitrogen is filled and kept at 0.03mpa; finally, a material injection pump injects product material liquid into the forming die cavity arranged in the forming die through the material inlet pipe, nitrogen gas at the upper end is increased when the material liquid enters the forming die cavity from the material inlet pipe at the lower end, and when the pressure in the forming die cavity exceeds 0.03mpa, the exhaust control valve is opened, and redundant nitrogen gas is discharged from the exhaust control pipe, so that the pressure value in the forming die cavity is kept at 0.03mpa; when the material in the cavity of the forming die is filled, and the material liquid enters the gas collecting flash tank, the material liquid sensor arranged above the gas collecting flash tank responds to instruct the controller body to stop material injection, and the switch valve at the side edge of the exhaust control pipe is closed after material injection is completed; opening the inflation valve, inflating and pressurizing the inflation tube, and inflating the pressure value in the controller body to 0.1-0.3mpa; and finally, maintaining the pressure for 120 seconds, and opening the die to obtain the product.
2. The dicyclopentadiene molding apparatus according to claim 1, wherein,
the die cavity control assembly further comprises a liquid-gas separator which is arranged above the exhaust control pipe and is positioned on the side edge of the switch valve.
3. The dicyclopentadiene molding apparatus according to claim 2, wherein,
the die cavity control assembly further comprises a pressure sensor, wherein the pressure sensor is fixedly connected with the controller body and is positioned above the inflation tube.
4. The dicyclopentadiene molding apparatus according to claim 3, wherein the dicyclopentadiene molding apparatus comprises a main unit,
the dicyclopentadiene forming device further comprises an injection gun head which is fixedly connected with the feeding pipe and is positioned at the side edge of the feeding pipe.
5. A dicyclopentadiene combined control system comprising the dicyclopentadiene molding apparatus according to claim 4, wherein,
the device also comprises a PLC control center, wherein one end of the PLC control center is respectively connected with the inflation valve, the pressure sensor, the vacuum extraction valve, the liquid-gas separator, the switching valve and the exhaust control valve, and the other end of the PLC control center is respectively connected with the nitrogen control valve and the injection gun head.
6. The dicyclopentadiene integrated control system according to claim 5, wherein,
the dicyclopentadiene allies oneself with accuse system still includes the seal groove, the seal groove set up in the inside lateral wall of the controller body.
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| CN202111008544.9A CN113752584B (en) | 2021-08-31 | 2021-08-31 | Dicyclopentadiene forming equipment and associated control system thereof |
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| CN115139462B (en) * | 2022-05-26 | 2023-12-15 | 东风柳州汽车有限公司 | Reaction injection molding die and preparation method of reaction injection molding product |
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| JP2005169787A (en) * | 2003-12-10 | 2005-06-30 | Toray Ind Inc | Method and apparatus for manufacturing frp |
| CN112706349A (en) * | 2021-03-26 | 2021-04-27 | 成都东日瑞姆机械有限公司 | Dicyclopentadiene-based reaction injection molding system |
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| JP4758732B2 (en) * | 2005-11-14 | 2011-08-31 | 日立マクセル株式会社 | Thermoplastic injection molding method using supercritical fluid |
| CN209971302U (en) * | 2019-04-17 | 2020-01-21 | 四川立民制冷科技有限公司 | Automatic aligning device for injection gate of polydicyclopentadiene material injection machine |
| CN211074440U (en) * | 2019-09-27 | 2020-07-24 | 贵州凯峰科技有限责任公司 | Pressure control system of plastic foaming mold |
| CN111204006A (en) * | 2020-01-16 | 2020-05-29 | 大成普道新材料技术有限公司 | Production method and application of hollow polydicyclopentadiene product |
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| JP2005169787A (en) * | 2003-12-10 | 2005-06-30 | Toray Ind Inc | Method and apparatus for manufacturing frp |
| CN112706349A (en) * | 2021-03-26 | 2021-04-27 | 成都东日瑞姆机械有限公司 | Dicyclopentadiene-based reaction injection molding system |
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