CN113147056A - Mold for complex composite material product with super-large and super-thick closed structure and use method - Google Patents
Mold for complex composite material product with super-large and super-thick closed structure and use method Download PDFInfo
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- CN113147056A CN113147056A CN202110506085.0A CN202110506085A CN113147056A CN 113147056 A CN113147056 A CN 113147056A CN 202110506085 A CN202110506085 A CN 202110506085A CN 113147056 A CN113147056 A CN 113147056A
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- insert
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
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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
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- 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
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
- B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
- B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a mould of a complex composite material product with an oversized and ultra-thick closed structure and a using method thereof, wherein the mould comprises an upper mould cavity, a lower mould cavity, a side-drawing sliding insert, an auxiliary product insert taking-out part and an air guide forming insert; during molding, a composite material product to be molded is positioned in a cavity between an upper mold cavity and a lower mold cavity, and the upper mold cavity, the lower mold cavity, the side-pulling sliding insert, the air guide molding insert and the product insert which is taken out in an auxiliary mode are combined together to form a product shape. The side-pulling sliding insert structure solves the problem that a composite material product mold with an ultra-large and ultra-thick closed structure is difficult to demold, and the product is uniform in wall thickness and smooth in surface without steps during production. The gas guide forming insert structure solves the problem that a composite material product with an oversized and ultra-thick closed structure is difficult to form, the problem that the product insert is difficult to take out after the product is solidified and formed is solved, and the production efficiency is improved.
Description
Technical Field
The invention relates to a mold and a using method, in particular to a mold and a using method for a complex composite material product with an oversized and ultra-thick closed structure, which solve the problems that a product mold is difficult to demold, a product is difficult to form, the product is difficult to take out after being solidified and formed, and the production efficiency is improved.
Background
The general composite material product has simple structure, no overlarge size and no overlarge wall thickness. Under the conditions of complex-structure composite material products, large size and large wall thickness, the product production difficulty is large and the structural design of the die is complex due to complex structure of the product.
Disclosure of Invention
In view of the above problems, the main object of the present invention is to provide a mold and a method for using the mold, which solve the problem that a product mold is difficult to demold, the problem that a product is difficult to form, the problem that the product is difficult to take out after being cured and formed, and improve the production efficiency of a complex composite product with an oversized and ultra-thick closed structure.
The invention solves the technical problems through the following technical scheme: the utility model provides a mould of complicated combined material product of super large super thick enclosed construction, mould of complicated combined material product of super large super thick enclosed construction includes: the device comprises an upper die cavity, a lower die cavity, a side-drawing sliding insert, an auxiliary product insert and an air guide molding insert; when in molding, a composite material product to be molded is positioned in a cavity between the upper die cavity and the lower die cavity.
The side-drawing sliding inserts for solving the problem that the composite material product is difficult to demould are positioned on the left side and the right side in the cavity between the upper die cavity and the lower die cavity, the auxiliary product insert for solving the problem that the composite material product is difficult to take out and the air guide forming inserts for solving the problem that the composite material product is difficult to form are positioned on the left side, the right side, the front side, the rear side, the upper side and the lower side in the cavity between the upper die cavity and the lower die cavity.
The product shape is formed by the cavities formed by combining the upper die cavity, the lower die cavity, the side-drawing sliding insert, the air guide forming insert and the auxiliary product insert.
In the specific implementation example of the invention, the side-drawing sliding insert, the auxiliary product taking-out insert and the gas guide molding insert all comprise a plurality of inserts.
In the specific implementation example of the invention, the number ranges of the side-drawing sliding insert, the auxiliary product taking-out insert and the gas guide molding insert are as follows: 2-5.
A use method of a mold for an oversized super-thick closed-structure complex composite product comprises the following steps:
according to the shape of the inner cavity surface of the composite material, mandrel foam with the shape of the inner cavity surface is manufactured, material is paved on the mandrel foam, the materials are placed into a mold after paving the materials, then an upper mold cavity, a lower mold cavity, a side-drawing sliding insert, an air guide forming insert and an auxiliary product taking insert are placed into corresponding mold positions, the mold is closed, prepressing is carried out on a hot press, after the mold is opened and prepressed, the positions where the mandrel foam is not pressed in place and the positions where the mold is clamped are adjusted after paving the materials and after the prepressing are observed, closing and prepressing are carried out again until the problems that the mandrel foam is not pressed in place and the mold is clamped are avoided, and heating, pressurizing and curing forming are carried out.
In the embodiment of the invention, preparation work is carried out before preparation, and the preparation work comprises raw material preparation, mold cleaning and machine preheating.
In the specific implementation example of the invention, during preparation, an upper die cavity and a lower die cavity of a die are cleaned, a side-drawing sliding insert and an air guide forming insert are taken out, and a layer of release agent is sprayed on the surface of the product insert to ensure that the product can be smoothly demoulded after being formed; placing the core shaft foam after the paste is laid into a mold and fixing the core shaft foam in the mold, then placing the side-pumping sliding inserts at the inverted buckling positions of the core shaft foam after the paste is laid into the upper mold, moving the side-pumping sliding inserts inwards under the action of mold closing force to compact the product again and move to corresponding positions when the upper mold is closed, and placing the gas guide forming inserts into the mold and fixing the gas guide forming inserts while providing gas pressure; until the product is cured and formed.
The positive progress effects of the invention are as follows: the mould and the use method of the complex composite material product with the oversized super-thick closed structure provided by the invention have the following advantages:
the side-pulling sliding insert structure solves the problem that a composite material product mold with an ultra-large and ultra-thick closed structure is difficult to demold, and the product is uniform in wall thickness and smooth in surface without steps during production. The gas guide forming insert structure solves the problem that a composite material product with an oversized and ultra-thick closed structure is difficult to form, the problem that the product insert is difficult to take out after the product is solidified and formed is solved, and the production efficiency is improved.
The side-pulling sliding insert has excellent detachability and good operability, and can be correspondingly manufactured into various shapes with adaptive shapes aiming at various composite material products with complex structures; high temperature resistance, acid and alkali resistance, repeated use and cost reduction; and easy demoulding and small shrinkage rate.
The invention utilizes the structure of the gas guide forming insert, the gas guide device and the product are put into a die to be heated, and the product is uniformly pressed under the temperature of 200 ℃ and the pressure of 0.8MPa, thereby obtaining better bonding strength and better appearance.
Drawings
Fig. 1 is a schematic diagram of the upper mold cavity, the lower mold cavity and the insert of the mold in the process of manufacturing the product of the invention.
Fig. 2 is a schematic diagram of the product of the present invention in a state when the upper mold cavity, the lower mold cavity and the insert of the mold are opened after the product is manufactured.
The following are the names corresponding to the reference numbers in the invention:
the mold comprises an upper mold cavity 1, a lower mold cavity 2, a side-drawing sliding insert 3, an auxiliary product insert 4 and an air guide molding insert 5.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a state of a product of the present invention when an upper mold cavity, a lower mold cavity and an insert of a mold are closed during manufacturing, and fig. 2 is a schematic diagram of a state of a product of the present invention when an upper mold cavity, a lower mold cavity and an insert of a mold are opened after manufacturing is completed, as shown in fig. 1-2: the invention provides a mold for a complex composite material product with an oversized super-thick closed structure, which comprises: an upper die cavity 1, a lower die cavity 2, a side-drawing sliding insert 3, an auxiliary product taking-out insert 4 and an air guide forming insert 5; during molding, a composite material product to be molded is positioned in a cavity between the upper mold cavity 1 and the lower mold cavity 2.
The side-drawing sliding insert 3 for solving the problem that the composite material product is difficult to demould is positioned at the left side and the right side in the cavity between the upper die cavity 1 and the lower die cavity 2, the auxiliary product insert 4 for solving the problem that the composite material product is difficult to take out and the air guide forming insert 5 for solving the problem that the composite material product is difficult to form are positioned at the left side, the right side, the front side, the rear side, the upper side and the lower side in the cavity between the upper die cavity 1 and the lower die cavity 2.
The product shape is formed by a cavity formed by combining an upper mold cavity 1, a lower mold cavity 2, a side-drawing sliding insert 3, an air guide forming insert 5 and an auxiliary product taking-out insert 4.
The side-drawing sliding insert 3, the auxiliary product taking-out insert 4 and the gas guide forming insert 5 are respectively provided with a plurality of inserts, and the number of the inserts can be 2-5.
A use method of a mold for an oversized super-thick closed-structure complex composite product comprises the following steps:
according to the shape of the inner cavity surface of the composite material, mandrel foam with the shape of the inner cavity surface is manufactured, material is paved on the mandrel foam, the mandrel foam is placed into a mold after the material is paved, then an upper mold cavity 1, a lower mold cavity 2, a side-drawing sliding insert, an air guide forming insert and an auxiliary product taking insert are placed into corresponding mold positions, the mold is closed, prepressing is carried out on a hot press, after the mold is opened, the prepressing is observed, the positions where the mandrel foam is not pressed in place and the positions where the mold is clamped are adjusted, closing and prepressing are carried out again until the problems that the mandrel foam is not pressed in place and the mold is clamped are avoided, and the mold can be completely closed, heated, pressurized and solidified and formed.
Before preparation, preparation work is carried out, including raw material preparation, mould cleaning and machine preheating.
During preparation, an upper die cavity 1 and a lower die cavity 2 of a die are cleaned, a side-drawing sliding insert and an air guide forming insert are taken out, and a layer of release agent is sprayed on the surface of the product insert to ensure that the product can be smoothly released after being formed; placing the core shaft foam after the paste is laid into a mold and fixing the core shaft foam in the mold, then placing the side-pumping sliding inserts at the inverted buckling positions of the core shaft foam after the paste is laid into the upper mold, moving the side-pumping sliding inserts inwards under the action of mold closing force to compact the product again and move to the corresponding positions when the upper mold is closed, and placing the gas guide forming inserts into the mold and fixing the gas guide forming inserts while providing 0.8MPa gas pressure; until the product is cured and formed.
The ultra-large and ultra-thick sealing structure complex composite material product is used after being cured and molded: the schematic diagram of the ultra-large and ultra-thick complex composite material product with a closed structure in use after curing and molding is shown in fig. 2: the upper die cavity, the lower die cavity, the side-drawing sliding insert, the air guide forming insert and the cavity formed by combining the product inserts in an auxiliary mode are taken out, so that the shape of the product is formed.
In this embodiment, behind the complicated combined material product solidification shaping of super large super thick enclosed construction, the mould die sinking with take out the product be a problem point that hardly solves, make both sides side take out the slip mold insert separation mould under the effect of external force behind the product shaping solidification, let both sides side take out the slip mold insert and stay in the lower mould with the product together, break away from the side again and take out the slip mold insert from the product, will carry out lateral motion when breaking away from and take out the slip mold insert and take out, otherwise hardly break away from and take out.
And (3) after the sliding insert is taken out from the taking-out side, the solidified product is left on the lower die, but the gas guide forming insert is clamped on the product and is left on the lower die, and at the moment, the gas guide forming insert is taken out from the taking-out side. And when the gas guide molding insert is taken out, the gas guide molding insert is taken out in a blocking mode.
And after the product back-off is completely separated and taken out, the product insert is taken out in an auxiliary mode under the action of external force by using the auxiliary product insert taking-out device, so that the product is separated and taken out from the lower die in an ejection mode. So that the whole product is completely separated and taken out.
The side-drawing sliding insert of the composite material product mold has the working principle that the paving material is thicker than the actual size of the product at normal temperature, the mold is difficult to mold, a side-drawing sliding insert structure is adopted, the paving material is softened after the temperature of the mold is raised to 200 ℃ by a hot press, and the side-drawing sliding insert moves for the 2 nd time under the action force of the mold closing of an upper mold and is compacted.
The side-pulling sliding insert structure solves the problem that a composite material product mold with an ultra-large and ultra-thick closed structure is difficult to demold, and the product is uniform in wall thickness and smooth in surface without steps during production. The gas guide forming insert structure solves the problem that a composite material product with an oversized and ultra-thick closed structure is difficult to form, the problem that the product insert is difficult to take out after the product is solidified and formed is solved, and the production efficiency is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a mould of complicated combined material product of super large super thick enclosed construction which characterized in that: the mould of the complex composite material product with the ultra-large and ultra-thick closed structure comprises: the device comprises an upper die cavity, a lower die cavity, a side-drawing sliding insert, an auxiliary product insert and an air guide molding insert; when in molding, the composite material product to be molded is positioned in the cavity between the upper die cavity and the lower die cavity,
the side-drawing sliding inserts for solving the problem that the composite material product is difficult to demould are positioned at the left and right sides in the cavity between the upper die cavity and the lower die cavity, the auxiliary product insert taking-out for solving the problem that the composite material product is difficult to take out and the air guide forming inserts for solving the problem that the composite material product is difficult to form are positioned at the left, right, front, rear, upper and lower positions in the cavity between the upper die cavity and the lower die cavity;
the product shape is formed by the cavities formed by combining the upper die cavity, the lower die cavity, the side-drawing sliding insert, the air guide forming insert and the auxiliary product insert.
2. The mold for the ultra-large and ultra-thick closed-structure complex composite material product as claimed in claim 1, wherein: the side-drawing sliding insert, the auxiliary product taking-out insert and the gas guide forming insert all comprise a plurality of inserts.
3. The mold for the ultra-large and ultra-thick closed-structure complex composite material product as claimed in claim 2, wherein: the number ranges of the side-drawing sliding insert, the auxiliary product-taking insert and the gas guide molding insert are as follows: 2-5.
4. The use method of the mold for the ultra-large and ultra-thick composite material product with the complex closed structure is characterized by comprising the following steps of: the using method comprises the following steps:
according to the shape of the inner cavity surface of the composite material, mandrel foam with the shape of the inner cavity surface is manufactured, material is paved on the mandrel foam, the materials are placed into a mold after paving the materials, then an upper mold cavity, a lower mold cavity, a side-drawing sliding insert, an air guide forming insert and an auxiliary product taking insert are placed into corresponding mold positions, the mold is closed, prepressing is carried out on a hot press, after the mold is opened and prepressed, the positions where the mandrel foam is not pressed in place and the positions where the mold is clamped are adjusted after paving the materials and after the prepressing are observed, closing and prepressing are carried out again until the problems that the mandrel foam is not pressed in place and the mold is clamped are avoided, and heating, pressurizing and curing forming are carried out.
5. The use method of the mold for the ultra-large and ultra-thick closed-structure complex composite material product as claimed in claim 4, wherein the mold comprises: before preparation, preparation work is carried out, including raw material preparation, mould cleaning and machine preheating.
6. The mold for the oversized ultra-thick closed-structure complex composite product according to claim 4, wherein: during preparation, cleaning an upper die cavity and a lower die cavity of a die, laterally drawing out a sliding insert, guiding a gas to form the insert, and assisting in taking out the surface of the product insert to beat a layer of release agent so as to ensure that the product can be smoothly released after being formed; placing the core shaft foam after the paste is laid into a mold and fixing the core shaft foam in the mold, then placing the side-pumping sliding inserts at the inverted buckling positions of the core shaft foam after the paste is laid into the upper mold, moving the side-pumping sliding inserts inwards under the action of mold closing force to compact the product again and move to corresponding positions when the upper mold is closed, and placing the gas guide forming inserts into the mold and fixing the gas guide forming inserts while providing gas pressure; until the product is cured and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506085.0A CN113147056A (en) | 2021-05-10 | 2021-05-10 | Mold for complex composite material product with super-large and super-thick closed structure and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506085.0A CN113147056A (en) | 2021-05-10 | 2021-05-10 | Mold for complex composite material product with super-large and super-thick closed structure and use method |
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| Publication Number | Publication Date |
|---|---|
| CN113147056A true CN113147056A (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110506085.0A Pending CN113147056A (en) | 2021-05-10 | 2021-05-10 | Mold for complex composite material product with super-large and super-thick closed structure and use method |
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| CN (1) | CN113147056A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844057A (en) * | 2021-09-19 | 2021-12-28 | 广东汇天航空航天科技有限公司 | Molding die, method for molding composite material part, and molded part |
| CN114750429A (en) * | 2022-03-17 | 2022-07-15 | 上海晋飞碳纤科技股份有限公司 | Composite material forming die and method for preparing high-precision complex-structure component by using same |
-
2021
- 2021-05-10 CN CN202110506085.0A patent/CN113147056A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844057A (en) * | 2021-09-19 | 2021-12-28 | 广东汇天航空航天科技有限公司 | Molding die, method for molding composite material part, and molded part |
| CN113844057B (en) * | 2021-09-19 | 2024-02-20 | 广东汇天航空航天科技有限公司 | Forming die, part forming method of composite material and formed part |
| CN114750429A (en) * | 2022-03-17 | 2022-07-15 | 上海晋飞碳纤科技股份有限公司 | Composite material forming die and method for preparing high-precision complex-structure component by using same |
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