CN112238560A - Injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber - Google Patents
Injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber Download PDFInfo
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- CN112238560A CN112238560A CN202011069086.5A CN202011069086A CN112238560A CN 112238560 A CN112238560 A CN 112238560A CN 202011069086 A CN202011069086 A CN 202011069086A CN 112238560 A CN112238560 A CN 112238560A
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- injection molding
- molding method
- silicone rubber
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1866—Feeding multiple materials
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection molding method and device for preparing a large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber. Because part of the composite material has a large-size complex internal structure, the preparation and demolding process is difficult, and the problems of uneven mixing, poor storage and the like easily exist in the glue injection process of the two-component high-viscosity rubber during injection molding. The invention provides an injection molding method and device for preparing a large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber, and relates to a two-component resin tank, an extrusion device, a vacuum device, a mixer and a mould. Separately storing the material A and the material B in a storage box, connecting a vacuum device in the storage box, extruding A, B materials into a mixer in a ratio of x: y by an extrusion device during use, enabling the mixture to pass through a plurality of mixers in the process of injecting into a mold, and installing rotating blades in the mixers and finally injecting into the mold. According to the invention, rubber products with certain thickness, temperature resistance, long size and opposite properties can be produced.
Description
Technical Field
The invention relates to the technical fields of composite materials, two-component injection molding equipment, rubber injection molding, molds and the like, in particular to an injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coated capsules by adopting ultra-high-viscosity silicone rubber. The method realizes the injection molding and the forming of the high-viscosity long-size anisotropic silicon rubber, simultaneously solves the problems of storage, proportioning, mixing and the like of double-component materials, and effectively improves the performance of products, saves manpower and materials.
Background
The forming process of the composite material is multiple, common processes include hand lay-up forming, winding forming, compression molding, pultrusion forming, RTM forming, autoclave forming and the like, wherein a mode that a resin cannot be cured independently is often involved in the liquid forming process, curing by means of a curing agent and the like is required, certain difficulty is often caused in the proportioning process of the resin during storage and glue injection, the two resins are mixed to ensure sufficient and uniform mixing, and the two resins can be cured quickly after mixing, so that the glue injection time is strictly controlled, and the glue injection of the conventional rubber in a vacuumizing mode cannot be realized during glue injection.
For a part of composite materials with long and complicated internal structures, a suitable core mold is usually developed in the manufacturing process, the generally adopted resin is high-viscosity rubber, and the core mold which conforms to the internal structure needs to be prepared for the convenience of post-treatment.
At present there is certain degree of difficulty to the storage of high viscosity two ingredient material, and two kinds of materials are because viscosity is high, if there is the misce bene through manual mixing, mechanical mixing then exists and need accomplish the injecting glue fast in the time of the utmost point after mixing, because two kinds of materials mix in case can fast cure after mixing, but do not have at present can guarantee high viscosity material misce bene, and accomplish the equipment of injecting glue fast after mixing. Because the mixing proportion of the two components is difficult to control in the injection molding process, the mixed resin is placed in an injection molding machine for injection molding after manual blending is adopted in the prior art, the method not only causes the existence of manual error in the blending process, but also consumes a large amount of manpower and material resources, and for the two-component materials which are rapidly solidified after being mixed, the difficulty in the injection molding process is increased by the manual blending method.
Disclosure of Invention
Aiming at the problems that the existing long-size anisotropic composite material with a complex internal structure is difficult to prepare and demould, and the problems of uneven mixing, poor storage and the like of the double-component high-viscosity rubber during the rubber injection process during the injection molding are very easy to occur. The invention aims to solve the problems in the prior art, and provides an injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coated capsules by adopting ultra-high-viscosity silicon rubber, wherein the processes from storage, proportioning and mixing of high-viscosity two-component materials to final glue injection molding and the like are described in detail.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the injection molding method and the device for preparing the large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting the ultra-high-viscosity silicone rubber are as follows: comprises a two-component resin tank, an extrusion device, a vacuum device, a mixer, a glue injection pipe and a mould. A material and B material are respectively and independently stored in a two-component resin tank, the upper end in the storage box is connected with a vacuum device, the lower end of the storage box is connected with an extrusion device, the extrusion device is connected with a plurality of mixers, and the mixers are connected with a mold through glue injection pipes.
A. When the material B is not used, the material B is separately stored in the material box, and the vacuum is always kept in the storage process.
The extruding device is provided with a proportioning mechanism, and A, B materials with corresponding flow rates can be respectively extruded according to the ratio of x to y.
The extrusion device is provided with a liquid pressure sensor, and the pressure of the liquid can be regulated and controlled in real time.
Have multichannel blender, high viscosity blender can realize 20 mixes, under vacuum state, in the airtight space for two kinds of component misce benes, and have rotating vane in the blender, the rotating vane of the different angles of multiunit links together, can realize high viscosity resin misce bene.
The inner cavity of the mould is anisotropic, and can produce rubber products with certain thickness, temperature resistance, high strength, large size and anisotropy.
The core mold is capsule-shaped, rubber is uniformly paved outside the core mold in a wrapping state in the rubber injection process, and the forming thickness can reach 0.5mm-10 mm.
In the encapsulation process, the resin is slowly injected from the lower part of the mould upwards, the upper part is vacuumized, and the product has no bubbles under the combined action of the two operations.
Compared with the prior art, the invention has the beneficial effects that: the invention scientifically and reasonably provides an injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coated capsules by adopting ultra-high-viscosity silicone rubber, solves the problems of storage, batching, mixing, final glue injection molding and the like of high-viscosity two-component materials, and has the advantages of simplicity and understandability, strong operability of equipment, strong experimental controllability, contribution to improving the production efficiency and great reduction of the production cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the injection molding method and apparatus for preparing large-size high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber according to the present invention;
FIG. 2 is a schematic structural diagram of a two-component resin tank of an injection molding method and apparatus for preparing a large-size high temperature and high pressure resistant expansion coated capsule by using ultra-high viscosity silicone rubber according to the present invention;
FIG. 3 is a schematic structural view of an injection molding method and an extrusion device for preparing a large-size high temperature and high pressure resistant expansion coating capsule by using ultra-high viscosity silicone rubber according to the present invention;
FIG. 4 is a schematic structural diagram of a mixer of the injection molding method and apparatus for preparing a large-sized high temperature and high pressure resistant expansion coated capsule using ultra-high viscosity silicone rubber according to the present invention;
FIG. 5 is a schematic structural view of a rotating blade of the injection molding method and apparatus for preparing a large-sized high temperature and high pressure resistant expansion coated capsule using ultra-high viscosity silicone rubber according to the present invention;
FIG. 6 is a schematic view of the internal structure of the mold of the injection molding method and apparatus for preparing large-size high temperature and high pressure resistant expansion coated capsules by using ultra-high viscosity silicone rubber according to the present invention.
Reference numbers in the figures:
in the figure: in the figure: 1 two-component resin tank, 2 extrusion device, 3 vacuum device, 4 mixing device, 5 mould, 6 box body, 7 auxiliary storage tank, 8 main storage tank, 9 vacuum tube, 10 guide tube, 11 support frame, 12 main through hole, 13 auxiliary through hole, 14 main flow tube, 15 auxiliary flow tube, 16 support rod, 17 proportioning mechanism, 18 handle, 19 liquid pressure sensor, 20 cleaning tube, 21 mixer, 22 injection tube, 23 rotating blade, 24 lower mould, 25 core mould, 26 fixed hole, 27 injection hole, 28 discharge hole
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described above are only a part of the embodiments of the present invention, and not all of the embodiments.
FIG. 1 is a schematic view of the overall structure of an injection molding method and apparatus for preparing a large-sized high temperature and high pressure resistant expanded coated capsule from ultra-high viscosity silicone rubber; the device comprises a two-component resin tank 1, an extrusion device 2, a vacuum device 3, a mixing device 4 and a mould 5. A material and B material are respectively and independently stored in a two-component resin tank 1, the upper end of a storage box is connected with a vacuum device 3, the lower end of the storage box is connected with an extrusion device 2, the extrusion device 2 is connected with a plurality of mixing devices 4, and a mixer 21 is connected with a mould 24 through a material injection pipe 22.
Fig. 2 is a schematic structural diagram of a two-component resin tank 1 of an injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion-coated capsules by using ultra-high-viscosity silicone rubber, the two-component resin tank 1 is provided with two storage tanks, namely a main storage tank 8 and an auxiliary storage tank 7 (the main storage tank is used for discharging main materials and the auxiliary storage tank is used for discharging curing agents in general) in a box body 6, the storage tanks are suspended and arranged, the lower ends of the storage tanks are respectively connected with a material guide pipe 10, when in use, materials are discharged from the storage tanks and flow through the material guide pipe 10 at the lower end, the materials are connected with a vacuum device 3 through a vacuum pipe 9 above the storage tanks.
Fig. 3 is a schematic structural view of an extrusion device 2 of the injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion-coated capsules by using ultra-high-viscosity silicone rubber, a support frame 11 of the extrusion device 2 is connected with a box body 6 of a two-component resin tank 1, a material guide pipe 10 of a main material storage tank 8 is connected with a main flow pipe 14 through a main through hole 12, a material guide pipe 10 of an auxiliary material storage tank 7 is connected with an auxiliary flow pipe 15 through an auxiliary through hole 13, a proportioning mechanism 17 is connected with the support frame 11 through four support rods 16, the proportioning mechanism 17 is provided with a size, the materials in the main material storage tank 8 and the auxiliary material storage tank 7 can flow out according to the x: y ratio by rotating a handle 18, and the outflow pressure of the.
Fig. 4 is a schematic structural diagram of the mixing device 4 and the injection molding method for preparing large-size high-temperature-resistant and high-pressure-resistant expansion-coated capsules by using ultra-high-viscosity silicone rubber according to the present invention, wherein at the beginning of material injection, the material injection valve is opened, the material guiding pipe 10 sends the material to the mixer 21, the material is fully mixed in the mixer 21 and then is injected into the mold cavity through the material injection pipe 22, and the material guiding pipe 10 is in a single flow direction. After the material is injected, the material injection valve is closed, the cleaning valve is opened, the cleaning agent passes through the cleaning pipe 20 to perform bidirectional pipeline cleaning, the pipeline is prevented from being blocked by material solidification, the mixer 21 is connected with a vacuum device, and the vacuum is kept in the material mixing process.
Fig. 5 is a schematic structural view of an injection molding method and a device rotating blade 23 for preparing a large-size high-temperature-resistant and high-pressure-resistant expansion coated capsule by using ultra-high-viscosity silicone rubber, four rotating blades 23 are connected inside a mixer 21, an angle between two adjacent blades is 45 degrees counterclockwise, high-viscosity resin is injected into the mixer 21 under certain pressure, the resin flows through the rotating blades 23, and the high injection pressure and the rotating blades with different angles enable the resin to be fully mixed with the resin, so that high-viscosity materials are uniformly mixed.
Fig. 6 is a schematic diagram of the internal structure of the injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion-coated capsules by using ultra-high-viscosity silicone rubber, wherein a core mold 25 is arranged in a mold 5, an upper mold and a lower mold are fixed through fixing holes 26 during mold closing, a glue injection hole 27 is formed in the lower end of the core mold 25, a discharge hole 28 is formed in the upper end of the core mold, the mold 5 after mold closing is vertically placed during material injection, and resin is injected into the mold from the glue injection hole 27 and is vacuumized from the discharge hole 28 in the upper end until the glue.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications and equivalents of the present invention. Any modification, partial replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The injection molding method and the device for preparing the large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting the ultra-high-viscosity silicone rubber are characterized in that: comprises a two-component resin tank, an extrusion device, a vacuum device, a mixer, a glue injection pipe and a mould. A material and B material are respectively and independently stored in a two-component resin tank, the upper end in the storage box is connected with a vacuum device, the lower end of the storage box is connected with an extrusion device, the extrusion device is connected with a plurality of mixers, and the mixers are connected with a mold through glue injection pipes.
2. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: A. when the material B is not used, the material B is separately stored in the material box, and the vacuum is always kept in the storage process.
3. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: the extruding device is provided with a proportioning mechanism, and A, B materials with corresponding flow rates can be respectively extruded according to the ratio of x to y.
4. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: the extrusion device is provided with a liquid pressure sensor, and the pressure of the liquid can be regulated and controlled in real time.
5. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: have the multichannel blender, high viscosity static mixer can realize 20 mixes, under vacuum state, in the airtight space for two kinds of components misce benes, and have rotating vane in the blender, the rotating vane of multiunit different angles links together, pours into the resin into the blender under certain pressure into, and the resin just obtains intensive mixing.
6. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: the inner cavity of the mould is anisotropic, and can produce rubber products with certain thickness, temperature resistance, high strength, large size and anisotropy.
7. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: the core mold is capsule-shaped, rubber is uniformly paved outside the core mold in a wrapping state in the rubber injection process, and the forming thickness can reach 0.5mm-10 mm.
8. The injection molding method and apparatus for preparing large-sized high temperature and high pressure resistant expansion coated capsules using ultra-high viscosity silicone rubber as claimed in claim 1, wherein: in the process of encapsulation, resin is slowly injected upwards from the lower part of the mould, the upper part is vacuumized, and under the combined action of the two operations, the product has no bubbles and is uniform in thickness everywhere.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069086.5A CN112238560A (en) | 2020-10-09 | 2020-10-09 | Injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069086.5A CN112238560A (en) | 2020-10-09 | 2020-10-09 | Injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber |
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| CN112238560A true CN112238560A (en) | 2021-01-19 |
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| CN202011069086.5A Pending CN112238560A (en) | 2020-10-09 | 2020-10-09 | Injection molding method and device for preparing large-size high-temperature-resistant and high-pressure-resistant expansion coating capsule by adopting ultra-high-viscosity silicone rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115838534A (en) * | 2022-07-01 | 2023-03-24 | 宁波市一彬实业投资有限责任公司 | Injection molding method and material for injection moldable organic silicon protective material |
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2020
- 2020-10-09 CN CN202011069086.5A patent/CN112238560A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115838534A (en) * | 2022-07-01 | 2023-03-24 | 宁波市一彬实业投资有限责任公司 | Injection molding method and material for injection moldable organic silicon protective material |
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