CN112743852A - Silicon rubber soft mold tool applied to composite material edge sealing process and process - Google Patents
Silicon rubber soft mold tool applied to composite material edge sealing process and process Download PDFInfo
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- CN112743852A CN112743852A CN202011500173.1A CN202011500173A CN112743852A CN 112743852 A CN112743852 A CN 112743852A CN 202011500173 A CN202011500173 A CN 202011500173A CN 112743852 A CN112743852 A CN 112743852A
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- edge sealing
- silicon rubber
- composite material
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- rubber soft
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
Abstract
The invention discloses a silicon rubber soft mold tool applied to a composite material edge sealing process and a process, and belongs to the technical field of composite material edge sealing. By utilizing the excellent thermal expansion function of the silicon rubber, the complex binding surface of the composite material product can be applied with expansion pressure when the edge sealing material is heated and cured, and the edge sealing material is completely bound with the product, so that the surface of the product is more compact and beautiful, and the requirement of the edge sealing process is met. The vulcanization process is one-step molding, the dimensional accuracy is high, and the product has good fitting property. Can solve the edge sealing process problem of various special-shaped composite material products.
Description
Technical Field
The invention belongs to the technical field of composite material edge sealing, and particularly relates to a silicon rubber soft mold tool applied to a composite material edge sealing process and a process.
Background
The traditional composite material edge sealing process mainly uses metal tools, and the principle is that a product is attached to the contact surface of the metal tools, and pressure is applied to the outside to meet the requirements of the edge sealing process. But when traditional metal banding frock is directed at the complex shape composite product. It has the following problems: the manufacturing is difficult, the shape following performance is poor, for example, the metal processing mode is difficult for the product with the special-shaped complex profile like sawtooth shape, after the processing is finished, the tool is difficult to be completely attached to the product, and the edge sealing requirement of the product with the complex appearance can not be met.
Disclosure of Invention
The invention aims to provide a silicon rubber soft die tool applied to a composite material edge sealing process and the process, and aims to solve the problem that the existing edge sealing tool cannot meet the edge sealing requirement of a special-shaped product with a complex appearance.
In order to realize the purpose of the invention, the technical scheme is as follows: the utility model provides an use silicon rubber soft mode frock at combined material banding technology, includes the frock body, and at least one side surface of frock body has the concavo-convex structure with combined material goods edge looks adaptation, and frock body and concavo-convex structure are silicon rubber vulcanization molding's an organic whole.
As a further alternative, the concavo-convex structure is saw-toothed.
As a further alternative, the tool body is annular.
The invention also provides an edge sealing process adopting any one of the silicon rubber soft mold tools, which comprises the following steps:
s1, vulcanizing and molding silicon rubber in a mold to form the silicon rubber soft mold tool;
s2, attaching the edge sealing material to the edge of the composite material product, enabling the concave-convex structure of the silicon rubber soft mold tool to face the edge sealing material, and embedding the edge sealing material into the edge of the composite material product to form an integral product;
s3, fixing the integral product on a metal mold, sequentially paving demolding cloth, an isolation film, an air-permeable felt and a vacuum bag film on the integral product, vacuumizing the integral product through an air exhaust port of the vacuum bag film, and applying negative pressure to the integral product to enable the silicone rubber soft mold tool, the edge sealing material and the composite material product to be attached more tightly;
s4, heating and raising the temperature according to the curing process conditions of the edge sealing material; and taking down the silicon rubber soft mold tool after the curing is finished, and finishing edge sealing.
As a further alternative, in the S1, the silicon rubber is vulcanized for 15min to be molded once under the conditions that the mold temperature is 170 ℃ and the vacuum degree is not less than 0.85 MPa.
As a further alternative, before the step S2, the silicone rubber soft mold tooling is segmented according to actual conditions.
The invention has the beneficial effects that: by utilizing the excellent thermal expansion function of the silicon rubber, the complex binding surface of the composite material product can be applied with expansion pressure when the edge sealing material is heated and cured, and the edge sealing material is completely bound with the product, so that the surface of the product is more compact and beautiful, and the requirement of the edge sealing process is met. The vulcanization process is one-step molding, the dimensional accuracy is high, and the product has good fitting property. Can solve the edge sealing process problem of various special-shaped composite material products.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it should be understood that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a silicone rubber soft mold tool applied to a composite material edge sealing process provided in an embodiment of the present invention;
FIG. 2 is a sectional view of the silicone rubber soft mold tooling shown in FIG. 1;
fig. 3 is a schematic diagram of an edge sealing process according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The invention is further described with reference to the following figures and specific embodiments.
Fig. 1 and 2 show a silicone rubber soft mold tool applied to a composite material edge sealing process, which comprises a tool body 101, wherein at least one side surface of the tool body 101 is provided with a concave-convex structure 102 matched with the edge of a composite material product, and the tool body 101 and the concave-convex structure 102 are an integrated piece formed by vulcanizing silicone rubber.
The concave-convex structure 102 is a sawtooth, the shape of the sawtooth can be a rectangle or other shapes, and the concave-convex structure 102 can also be other complex shapes such as special shapes matched with the edge of a composite material product. The tool can be suitable for edge sealing of composite materials with regular or irregular complex concave-convex edges. The material is silicon rubber, and has excellent thermal expansion function. The tool with the complex appearance can be formed into the soft die tool in one step by using a rubber vulcanization process, and the precision requirement of the soft die tool is met. The size precision is high, and the product laminating nature is good. The tool body 101 is annular, so that the tool body can be integrally formed conveniently and can be in other shapes.
Fig. 3 shows an edge sealing process using any one of the above silicone rubber soft mold tools, which is provided by an embodiment of the present invention, and includes the following steps:
s1, vulcanizing and molding silicon rubber in a mold to form the silicon rubber soft mold tool 1;
s2, attaching the edge sealing material 2 to the edge of the composite material product 3, enabling the concave-convex structure 102 of the silicon rubber soft mold tool 1 to face the edge sealing material 2, and embedding the edge sealing material into the edge of the composite material product 3 to form an integral product;
s3, fixing the integral product on a metal mold 4, sequentially paving a demolding cloth 5, an isolating membrane 6, an air-permeable felt 7 and a vacuum bag membrane 8 on the integral product, vacuumizing the integral product through an air exhaust port 9 of the vacuum bag membrane 8, and applying negative pressure to the integral product to enable the silicone rubber soft mold tool 1, the edge sealing material 2 and the composite material product 3 to be attached more tightly;
s4, heating and raising the temperature according to the curing process conditions of the edge sealing material 2; and after the solidification is finished, taking down the silicon rubber soft mold tool 1 to finish edge sealing.
The flowability of the edge sealing material 2 becomes stronger along with the temperature rise in the curing process, and meanwhile, the edge sealing material 2 is extruded by the silicone rubber soft mold tool 1 through thermal expansion and is attached to the composite material product 3; with the completion of solidification, the temperature is reduced, the product is cooled, and the silicon rubber rebounds and contracts; after the silicon rubber soft mold tool 1 is removed, the edge sealing process effect is achieved. The finished edge sealing material 2 is uniformly adhered to the edge sealing area of the composite material product 3, the appearance is uniform and compact, and the requirements of the edge sealing process of the product are met.
The size of the concave-convex structure 102 of the silicon rubber soft mold tool 1 is obtained by scaling the theoretical size of the concave-convex structure at the edge of the composite material product 3 by combining the thermal expansion coefficient of silicon rubber. If the concave-convex structure 102 is a sawtooth, the difference between the theoretical size of the tooth width of the sawtooth and the thermal expansion amount of the silicone rubber is the scaling size.
The manufacturing of the silicon rubber soft mold tool 1 uses a rubber vulcanization process, and in S1, the silicon rubber is vulcanized for 15min for one-step forming under the conditions that the mold temperature is 170 ℃ and the vacuum degree is not less than 0.85 MPa.
Before S2, the silicone rubber soft mold tooling 1 is segmented according to actual conditions. Can be cut into multiple sections, and is convenient for subsequent operation. The silicon rubber soft mold tools 1 at all sections can be correspondingly embedded into the edges of the composite material product 3 respectively by means of auxiliary tools, the molded surfaces are opposite, the operation is easy, and the efficiency is high.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (6)
1. The utility model provides an use silicon rubber soft mode frock at combined material banding technology which characterized in that, includes the frock body, and at least one side surface of frock body has the concavo-convex structure with combined material goods edge looks adaptation, and frock body and concavo-convex structure are the integrative piece of silicon rubber vulcanization moulding.
2. The silicon rubber soft mold tool applied to the edge sealing process of the composite material as claimed in claim 1, wherein the concave-convex structure is a saw tooth.
3. The silicon rubber soft mold tool applied to the edge sealing process of the composite material according to claim 1, wherein the tool body is annular.
4. An edge sealing process adopting the silicon rubber soft mold tool according to any one of claims 1 to 3, characterized by comprising the following steps:
s1, vulcanizing and molding silicon rubber in a mold to form the silicon rubber soft mold tool;
s2, attaching the edge sealing material to the edge of the composite material product, enabling the concave-convex structure of the silicon rubber soft mold tool to face the edge sealing material, and embedding the edge sealing material into the edge of the composite material product to form an integral product;
s3, fixing the integral product on a metal mold, sequentially paving demolding cloth, an isolation film, an air-permeable felt and a vacuum bag film on the integral product, vacuumizing the integral product through an air exhaust port of the vacuum bag film, and applying negative pressure to the integral product to enable the silicone rubber soft mold tool, the edge sealing material and the composite material product to be attached more tightly;
s4, heating and raising the temperature according to the curing process conditions of the edge sealing material; and taking down the silicon rubber soft mold tool after the curing is finished, and finishing edge sealing.
5. The edge sealing process according to claim 4, wherein in the S1, the silicon rubber is vulcanized for 15min to be molded once at the mold temperature of 170 ℃ and the vacuum degree of not less than 0.85 MPa.
6. The edge sealing process according to claim 4, wherein before the step S2, a silicon rubber soft mold tool is segmented according to actual conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500173.1A CN112743852A (en) | 2020-12-18 | 2020-12-18 | Silicon rubber soft mold tool applied to composite material edge sealing process and process |
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| CN202011500173.1A CN112743852A (en) | 2020-12-18 | 2020-12-18 | Silicon rubber soft mold tool applied to composite material edge sealing process and process |
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| CN112743852A true CN112743852A (en) | 2021-05-04 |
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| US4027723A (en) * | 1975-01-20 | 1977-06-07 | Precision Flexmold, Inc. | Molding apparatus including a flexible mold for making articles having radially inwardly extending projections on an interior surface |
| JPH05163589A (en) * | 1991-12-13 | 1993-06-29 | Murata Mfg Co Ltd | Manufacture of flexible photomask and electrode pattern forming method using the same |
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| CN103190775A (en) * | 2012-09-06 | 2013-07-10 | 梅州市汇胜制品有限公司 | Flexible die hot pressing furniture edge sealing device and furniture heteromorphous component edge sealing technique |
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| US10631413B1 (en) * | 2011-11-28 | 2020-04-21 | The United States Of America As Represented By The Secretary Of The Army | Enhanced protective layering process to accommodate circuit board heat dissipation |
| CN111113957A (en) * | 2019-12-27 | 2020-05-08 | 中国民用航空飞行学院 | Through hole edge packaging method for honeycomb sandwich composite material structural member |
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- 2020-12-18 CN CN202011500173.1A patent/CN112743852A/en active Pending
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| US4027723A (en) * | 1975-01-20 | 1977-06-07 | Precision Flexmold, Inc. | Molding apparatus including a flexible mold for making articles having radially inwardly extending projections on an interior surface |
| JPH05163589A (en) * | 1991-12-13 | 1993-06-29 | Murata Mfg Co Ltd | Manufacture of flexible photomask and electrode pattern forming method using the same |
| US20110132562A1 (en) * | 2009-12-08 | 2011-06-09 | Merrill Gary B | Waxless precision casting process |
| CN201680446U (en) * | 2010-05-31 | 2010-12-22 | 米技电子电器(上海)有限公司 | Silicone wrapping structure for electromagnetic oven microcrystalline glass panel |
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Address after: No.288, west section of Wenming street, new economic Industrial Park, south area of Chengdu modern industrial port, Pidu District, Chengdu, Sichuan 610000 Applicant after: Chengdu Jiachi Electronic Technology Co.,Ltd. Address before: No.288, west section of Wenming street, new economic Industrial Park, south area of Chengdu modern industrial port, Pidu District, Chengdu, Sichuan 610000 Applicant before: CHENGDU JIACHI ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20210504 |